JP7343934B1 - A flying object and its manufacturing method, and a flying object component and its manufacturing method - Google Patents

Abstract

[Problem] An object of the present invention is to prevent the bulb constituting the air sac from locally slipping up toward the zenith of the air sac, even if an upward force is applied to the air sac. Thereby, the objective is to obtain a flying object that can reduce stress concentration at a specific location of the air sac. A flying object 100 of the present invention includes an air bladder 110 that generates buoyancy, a first cylindrical member 40b attached to the outside of the air bladder along a latitude line L of the air bladder, and It is equipped with a first cable body 40a that is passed inside and suppresses local deformation of the air sac during flight. [Selection diagram] Figure 2

Description

The present invention relates to a structure of a flying object equipped with an air bladder that generates buoyancy by filling it with statically buoyant gas (so-called gas lighter than air, hereinafter referred to as "light gas"), and a method for manufacturing the same. The present invention relates to a flying object member used in a flying object and a method for manufacturing the same.

In a flying object such as a balloon or an airship that flies by the buoyancy generated within the air sac, it is preferable that the air sac be lightweight, but if the weight of the air sac is reduced, its strength will be reduced.

To address the issue of the trade-off between weight reduction and strength of the air sac, conventional measures have been taken to disperse the load applied to the air sac (for example, see paragraph 0010 of Patent Document 1). This is because by dispersing the load applied to the air sac, even an air sac with low strength can withstand the load.

Specifically, the solution is to attach a cable called a load tape along several meridians from the top of the air bag to its lower half, and attach the lower end of the load tape to the load area. It's about connecting. In a balloon having such a structure, during flight, the load of the load section is applied to the load tape, and as a result, the load applied to the air bladder is distributed to the portion of the air bladder that is in contact with the load tape.

Patent No. 2967196

However, even in a flying object with such a configuration, when an upward force (buoyancy or rising air current) acts on the air sac, the sheet-like member (the so-called bulb) that makes up the air sac will separate between the adjacent load tapes. There is a problem in that stress is concentrated at the joint part of the air sac with the road tape as the air sac slides up to the zenith side.

The present invention can suppress the bulb (sheet-like member) constituting the air sac from locally slipping up toward the zenith of the air sac even if an upward force is applied to the air sac, Thereby, the object is to obtain a flying object that can reduce stress concentration at a specific location of an air sac, and a method for manufacturing such a flying object.

Another object of the present invention is to obtain a member for a flying object, which is used in such a flying object, and a method for manufacturing the same, which can suppress the lifting of the envelope constituting the air sac.

The present invention provides the following items.
(Item 1)
air sacs that generate buoyancy;
a first cylindrical member attached to the outside of the air bladder along the latitude of the air bladder;
A flying object, comprising: a first cable body passed through the inside of the first cylindrical member.
(Item 2)
The flying object according to item 1, wherein the first cylindrical member is disposed on the lower half side of the air bladder.
(Item 3)
Item 1, wherein the first cylindrical member is formed with an aperture for taking out the first cord from inside the first cylindrical member, in addition to the apertures provided at both ends. The flying object described in .
(Item 4)
The flying object according to item 1, wherein the first cylindrical member is thicker at both ends than at a portion other than the both ends.
(Item 5)
The flying object according to item 1, wherein the first cylindrical member is heat-welded to the air bladder.
(Item 6)
The first cylindrical member includes a cylindrical body portion through which the first cable body passes, and a fixed portion fixed to the air bladder, and a boundary portion between the cylindrical body portion and the fixed portion is the fixed portion. The flying object according to item 1, wherein the flying object is configured to be located below an end portion of the portion opposite to the boundary portion.
(Item 7)
The first cylindrical member includes a cylindrical body portion through which the first cable body passes, and a fixed portion fixed to the air bladder, and a boundary portion between the cylindrical body portion and the melted fixed portion is connected to the fixed portion. The flying object according to item 1, wherein the flying object is configured to be located above an end portion of the portion opposite to the boundary portion.
(Item 8)
comprising a load portion that applies a load to the air sac;
a second cylindrical member attached to the outside of the air bladder along the meridian from the top of the air bladder;
The flying object according to item 1, further comprising: a second cable body passed inside the second cylindrical member.
(Item 9)
A plurality of the first cylindrical members are arranged at predetermined intervals along the latitude line,
The flying object according to item 8, wherein the second cable body intersects with the first cable body between adjacent first cylindrical members arranged along the latitude line.
(Item 10)
The flying object according to item 9, wherein the first cable and the second cable are joined at an intersection between the first cable and the second cable.
(Item 11)
The flying object according to item 8, wherein the second cylindrical member is heat-welded to the air bladder.
(Item 12)
The flying object is
The flying object according to item 1, further comprising a duct member for introducing gas into the inside of the air sac, which is attached to the inside of the air sac along the meridian from the top of the air sac.
(Item 13)
The flying object is a gas balloon in which buoyancy is generated by filling the air bladder with gas having static buoyancy, or a hot air balloon in which buoyancy is generated by filling the air bladder with heated air. 1. The flying object according to 1.
(Item 14)
A method for manufacturing a flying object according to item 1, comprising:
forming a plurality of sheet-like air sac pieces to which the first cylindrical member is fixed as a plurality of air sac pieces that are constituent members of the air sac;
and forming the air sac by sequentially joining the plurality of sheet-like air sac pieces.
(Item 15)
In the step of forming the air sac piece,
The method for manufacturing a flying object according to item 14, wherein a sheet-like air sac piece to which the first cylindrical member is fixed is formed by joining the lower part of the air sac piece and the upper part of the air sac piece together with the first cylindrical member. .
(Item 16)
In the step of forming the air sac piece,
A sheet-like air bladder in which the first cylindrical member is fixed by folding at least a portion of one air sac piece material to form a folded portion, and joining the first cylindrical member to the folded portion. The method for manufacturing a flying object according to item 14, comprising forming a piece.
(Item 17)
In the step of forming the air sac piece,
folding at least a portion of one bladder piece material to form a first fold; folding at least a portion of the first fold to form a second fold; and then folding the first fold to form a second fold. The flying object according to item 14, wherein a sheet-like air sac piece to which the first cylindrical member is fixed is formed by welding at least a part of the second folded part so that a shaped part is formed. manufacturing method.
(Item 18)
The flying object according to item 14, further comprising the step of, after forming the air sac, passing the first cable through a plurality of first cylindrical members fixed to a plurality of air sac pieces constituting the air sac. manufacturing method.
(Item 19)
In the step of forming the air sac,
The flying object according to item 18, wherein the adjacent sheet-like air sac pieces are joined by overlapping two sheet-like air sac pieces of the plurality of sheet-like air sac pieces and thermally welding one side edge thereof. manufacturing method.
(Item 20)
In the step of forming the air sac,
A second cylindrical member extending along a predetermined meridian from the top of the air bladder is stacked on one side edge of the two stacked sheet-like air bladder pieces and thermally welded to form the air bladder,
20. The method for manufacturing a flying object according to item 19, wherein the second cable body, which is loaded during flight, is then passed inside the plurality of second cylindrical members attached to the air bladder.
(Item 21)
After passing the first cable body through the first cylindrical member and passing the second cable body through the second cylindrical member, the first cable body and the second cable body further comprising a joining step of joining at the intersection of the bichords,
In the joining step, the end of the second cable body is folded back into a loop shape so as to surround the first cable body, and the folded part and the folded part of the second cable body are bonded together. The method for manufacturing a flying object according to item 20, wherein the overlapping portions are joined by suturing.
(Item 22)
A member used in the flying object according to item 1,
a plurality of air sac pieces forming the air sac;
the first cylindrical member attached to each of the plurality of air bladder pieces;
The first cylindrical member is a flying object member configured to allow the first cable to pass therethrough.
(Item 23)
A member used in the flying object according to item 8,
a plurality of air sac pieces forming the air sac;
the first cylindrical member attached to each of the plurality of air bladder pieces;
the second cylindrical member attached to each of the plurality of air bladder pieces;
a cord passed inside the second cylindrical member;
The first cylindrical member is configured to allow the first cable body to pass therethrough,
The first cylindrical member and the second cylindrical member include a heat-weldable material,
The cable body is a flying object member having higher heat resistance than the second cylindrical member.
(Item 24)
A method for manufacturing a flying object member according to item 22, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces is formed by fixing side edges of a lower air sac piece and an upper air sac piece to an end of the first cylindrical member.
(Item 25)
A method for manufacturing a flying object member according to item 22, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces is formed by folding at least a portion of one air sac piece material to form a folded part, and fixing an end of the first cylindrical member to the folded part. A method of manufacturing a member for a flying object.
(Item 26)
A method for manufacturing a flying object member according to item 22, comprising:
an air sac piece forming step of forming an air sac piece to which the first cylindrical member is attached as a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces includes folding at least a portion of one air sac piece material to form a first folded portion, and folding at least a portion of the first folded portion to form a second folded portion. A method for manufacturing a member for a flying object, the method comprising forming a part and welding at least a part of the second folded part so that a cylinder part is formed in the second folded part. .
(Item 27)
A method for manufacturing a flying object member according to item 23, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
forming each of the plurality of air sac pieces by fixing side edges of a lower air sac piece and an upper air sac piece to an end of the first cylindrical member;
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object.
(Item 28)
A method for manufacturing a flying object member according to item 23, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
Each of the plurality of air sac pieces is formed by folding at least a portion of one air sac piece material to form a folded part, and fixing an end of the first cylindrical member to the folded part. including the process of
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object.
(Item 29)
A method for manufacturing a flying object member according to item 23, comprising:
an air sac piece forming step of forming a plurality of air sac pieces to which the first cylindrical member is attached as a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
In each of the plurality of air sac pieces, at least a portion of one air sac piece material is folded to form a first folded part, and the first folded part is folded to further form a second folded part. and a step of forming the second folded part by welding so that a cylindrical part is formed in the second folded part,
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object.

According to the present invention, even if an upward force is applied to the air sac, it is possible to suppress the bulb constituting the air sac from locally slipping up toward the top of the air sac, and thereby, It is possible to obtain a flying object and a method for manufacturing such a flying object that can reduce stress concentration at a specific location of an air sac.

Further, according to the present invention, it is possible to obtain a member for a flying object, which is used in such a flying object, and which can suppress the lifting of a bulb constituting an air sac, and a method for manufacturing the same.

FIG. 1 is a perspective view showing a flying object 100 according to Embodiment 1 of the present invention, showing the structure of the flying object 100 viewed from above and the structure of the flying object 100 viewed from below. FIG. 2 is a diagram showing the positional relationship between the connecting member 130 and the reinforcing member 140 shown in FIG. 1. FIG. 3 is a diagram showing the structure of the air bladder 110 in which the first cylindrical member (horizontal sleeve) 40b constituting the reinforcing member 140 shown in FIG. 2 is integrated. FIG. 4 is a diagram showing a state in which the first cable body (horizontal load cable) 40a is passed through the first cylindrical member (horizontal sleeve) 40b shown in FIG. 3. FIG. 4A is a diagram illustrating an attachment state of the first cylindrical member 40b to the joint portion 10c, which is different from the method shown in FIG. 4. FIG. 4B is a diagram showing a first cylindrical member 41b different from the first cylindrical member 40b shown in FIG. 4A. FIG. 4C is a diagram showing a state of the first cable body 40a inserted between the first cylindrical members 41b when the first cylindrical members 41b shown in FIG. 4B are used. FIG. 4D is a diagram showing a manufacturing process of a sheet-like air bladder piece 61 different from the sheet-like air bladder piece 10 shown in FIG. 3. FIG. 4E is a diagram showing a manufacturing process of a sheet-like air bladder piece 71 different from the sheet-like air bladder piece 61 shown in FIG. 4D. FIG. 5 shows the structure of a portion (portion A in FIG. 2) where the second cylindrical member (vertical sleeve) 30b and second cable body (vertical load cable) 30a are arranged in the air bladder 110 shown in FIG. 2, and their structure. FIG. 3 is an enlarged diagram specifically showing the structure of a member. FIG. 6 is an enlarged view showing the structure of the end portion of the vertical load cable 30a shown in FIG. 2 (portions B and C in FIG. 2(a)). FIG. 7 is a diagram showing a process of cutting out the lower air sac piece 10a and the upper air sac piece 10b, which are the parts of the air sac piece 10, from the sheet-like material 50. FIG. 8 is a diagram showing a process of forming the air bladder piece 10 (FIG. 3) with the integrated horizontal sleeve 40b. FIG. 8A is a diagram showing a process of cutting out one air sac piece material 60a as a component of an air sac piece 61 that replaces the air sac piece 10 shown in FIG. FIG. 9 is a diagram showing an example of a method for manufacturing the vertical sleeve 30b through which the vertical load cable 30a is passed as shown in FIG. FIG. 10 is a diagram schematically showing a process of simultaneously joining the two air bladder pieces 11 and 12 and fixing the vertical sleeve 30b through which the vertical load cable 30a is passed. FIG. 11 is a diagram showing how the side edges of two air bladder pieces 11 and 12 are joined together with a vertical sleeve 30b through which a vertical load cable 30a is passed. FIG. 12 is a diagram for explaining an example of a method of manufacturing a vertical sleeve 30b through which a leading rope body 33 is passed. FIG. 13 is a diagram showing an example of a method of attaching the vertical sleeves 30b and the vertical load cable 30a to the air bag 110 using a plurality of vertical sleeves 30b through which the leading rope bodies 33 are passed. FIG. 14 is a diagram showing the action of the horizontal sleeve 40b fixed to the air bag 110 and the horizontal load cable 40a passed through the sleeve.

The present invention will be explained below. It should be understood that the terms used herein have the meanings commonly used in the art, unless otherwise specified. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification (including definitions) will control.

As used herein, "about" refers to a range of ±10% of the following number.

The objects of the present invention are a flying object, a method for manufacturing the same, parts used in the flying object (parts for a flying object), and a method for manufacturing the same, and the scope of these inventions will be explained below.

[Flying object of the present invention]
The present invention can suppress the bulb forming the air sac from sliding up toward the top of the air sac even if an upward force is applied to the air sac. The goal is to obtain a flying object that can reduce the stress concentration of
air sacs that generate buoyancy;
a first cylindrical member attached to the outside of the air sac along the latitude of the air sac;
The above-mentioned problem is solved by providing a flying object that includes a first cable body passed inside a first cylindrical member.

In this way, by attaching the first cylindrical member to the outside of the air sac along the latitude of the air sac and passing the first cord through the first cylindrical member, the bulb constituting the air sac can be attached to the outer side of the air sac. The vertical movement is regulated by the first cylindrical member through which the cable body is passed, and even if a force is applied to the air bag in the direction of lifting the air bag, the air bag will not move. It can suppress the sliding up.

Therefore, the flying object of the present invention is one in which the first cylindrical member is attached to the outside of the air bladder along its latitude, and the first cable body is passed inside the first cylindrical member. , and other configurations are not particularly limited and may be arbitrary.

(First cylindrical member)
That is, one first cylindrical member may be provided along one latitude of the air bladder, or a plurality of first cylindrical members may be provided along one latitude. When a plurality of first cylindrical members are provided along one latitude line, it is preferable that the interval between adjacent first cylindrical members be constant. This is because the force exerted by the first cable body passed inside the first cylindrical member on the air sac via the first cylindrical member can be more evenly distributed on the circumference along the latitude lines. be. This means that it is possible to avoid unevenness in the effect of the first cord body on suppressing the lifting of the bulb.

Further, the first cylindrical member may be provided along two or more latitude lines of the air bladder. In this case, one first cylindrical member may be provided along each of the two or more latitude lines, or a plurality of first cylindrical members may be provided along each of the two or more latitude lines. Furthermore, a plurality of first cylindrical members are provided along one or more specific latitude lines among the two or more latitude lines, and a plurality of first cylindrical members are provided along another one or more latitude lines among the two or more latitude lines. Only one may be provided.

The position of the first cylindrical member in the air bag may be arbitrary depending on the angle at which the load is hung with respect to the air bag (the hanging angle of the load). The first cylindrical member is arranged on the lower half side of the air bladder.

By arranging the first cylindrical member at the lower half side of the air bladder in this way, when the air sac is inflated into a substantially spherical shape, the first cylindrical member It is located on a line of latitude that has a diameter smaller than the maximum diameter of the air sac, and therefore prevents the sheet-like member constituting the bulb connected to this first cylindrical member from moving upward. becomes possible.

Note that the first cylindrical member may be made of any material. In one embodiment, the first cylindrical member is made of resin (for example, polyethylene), but the material constituting the first cylindrical member is not limited to resin. It may be made of any material as long as it satisfies desired conditions such as mass and strength.

Further, the first cylindrical member and the air bladder may be connected by any connection method. The first cylindrical member may be heat-welded to the outside of the air bladder, fixed with adhesive, or sewn. Similarly, the joining means of the joint parts (horizontal joint parts and vertical joint parts described later) in the present invention may be any means, for example, heat welding or adhesive bonding. It may also be sewn.

Moreover, since both ends of the first cylindrical member may receive a strong force from the first cable body, it is preferable that the strength of both ends of the first cylindrical member is increased. A specific structure for increasing the strength of both ends of the first cylindrical member is to make the thickness of both ends of the first cylindrical member thicker than other parts. For example, each end may have a structure in which the sheet-like component of the first cylindrical member is folded back, or the end of the first cylindrical member may have another It may also have a structure in which sheet-like structural members are pasted.

Further, the first cylindrical member may be formed with an opening that serves as an entrance and exit for the first cable body. By providing such an opening, that is, a hole through which the first cable body passes, in the first cylindrical member, the tensile load applied to the welded interface between the first cylindrical member and the bulb constituting the air bladder can be reduced. This makes it possible to suppress the tearing of the first cylindrical member.

The position of the opening in the first cylindrical member may be arbitrary. For example, the opening may be provided at an end portion approximately 5 mm away from the side wall of the first cylindrical member, but the present invention is not limited thereto.

In addition, the first cylindrical member is attached so that the part of the air bladder piece to which the first cylindrical member is fixed (horizontal joint part) is folded downward and faces downward with respect to this horizontal joint part. It is preferable that the In other words, the first cylindrical member fixed to the horizontal joint part folded downward includes a cylindrical part through which the first cable passes, and a fixed part fixed to the air bladder, but the cylindrical part and It is preferable that the boundary portion with the fixed portion be located below the end of the fixed portion on the opposite side to the boundary portion. In this case, when a force is applied to the air sac in a direction to pull up the air sac piece relative to the first cable body, a force is applied to the first cylindrical member in a direction to peel it from the horizontal joint. can be avoided.

Alternatively, the first cylindrical member may be attached such that the horizontal fixed portion of the air bladder piece is folded downward and faces upward with respect to the horizontal joint portion. In other words, in the first cylindrical part that is fixed to the horizontal joint part folded downward, the boundary part between the cylindrical part and the fixed part is above the end of the fixed part on the opposite side from the boundary part. It may be configured to be located. In this case, the side edge of the horizontal joint of the air bladder piece and the side edge of the fixed portion of the first cylindrical member can be aligned and welded together, making it easy to attach the first cylindrical member to the air bladder. This is effective when it is assumed that the force acting on the air sac is small (for example, when the flying object is small).

(first cord body)
If one or more first cylindrical members are provided along one latitude of the air bladder, one ring-shaped first cable body may be inserted through the one or more first cylindrical members. can be provided inside it.

For example, if a plurality of first cylindrical members are fixed to the air sac at predetermined intervals along one latitude of the air sac, one ring-shaped member is fixed to the air sac at predetermined intervals along one latitude of the air sac. The first cable body may be movably provided.

In addition, when the first cylindrical member is provided along two or more latitude lines of the air bladder, the ring-shaped first cable body is arranged along each latitude line of the two or more latitude lines. It can be provided inside one or more first cylindrical members provided along.

Note that conventionally, a band-like member made of nylon, Tetron, or polyester is used for the first cable body, but the first cable body is not limited to this, and the first cable body may be made of, for example, a thin metal wire or a metal mesh material. It may also be an embedded resin band-like member. Further, the first cable body is not limited to a band-like member, but may be a string-like member.

Further, the flying object further includes a load section and a connecting member, and the connecting member connects the air bladder and the load section so that the load section is suspended from the air bladder during flight. However, the configuration of this connecting member is not limited.

(Connection member)
The connecting member may include a second rope body fixed to the outside of the air bladder along the meridian from the top of the air bladder, so that the load of the load portion is applied to the second rope body during flight.

In this case, during flight, the load of the load section is applied to the second cable body arranged along the plurality of meridians of the air bladder, and as a result, the load of the load section is applied to the second cable body of the air bladder. It will be distributed to the area where it is located.

Alternatively, the connecting member may include a second cylindrical member attached to the outside of the air sac along the meridian from the top of the air sac, instead of the second cable fixed to the air sac, and a second cylindrical member attached to the outside of the air sac along the meridian from the top of the air sac. It may also include a second cable body passed inside.

In this case, in the flying object, in addition to the effect of dispersing the load of the load portion by the second cable, the effect of reducing the bias in the distribution of the load by the second cable is obtained.

This is because even if the lengths of the plurality of second cord bodies provided along the plurality of meridians of the air sac vary, the variation in tension among the plurality of second cord bodies is suppressed. This is because the second cable body moves inside the second cylindrical member.

More specifically, when the second cable body is movably arranged within the second cylindrical member fixed to the air bladder, the length of the second cable body provided at each location of the air bladder Even if it is not adjusted correctly, the second cable body moves relative to the second cylindrical member during flight so that the tension of the plurality of second cable bodies becomes uniform. For this reason, the length of the second cable body or the connecting cable body (such as a rope) connecting the other end of the second cable body and the load part is adjusted so as to eliminate the inclination of the load part suspended from the air bag. By adjusting the length, it is possible to easily achieve a state in which the load applied to the air sac is evenly distributed.

Furthermore, a plurality of first cylindrical members are arranged at predetermined intervals along the latitude lines, and the second cable body is arranged between adjacent first cylindrical members arranged along the latitude lines. It is preferable that the first chord intersects between the two chords.

In this case, at the intersection of the first and second cables, the first and second cables can be joined, and by their joining, the sheet-like member constituting the air sac is The force in the upward sliding direction is applied to the first cylindrical member fixed to the sheet-like member and the first cylindrical member passed through the first cylindrical member, which is connected to the first cylindrical member. It can be received by the second cable body, and it is possible to more effectively suppress the sheet-like member constituting the air bag from sliding upward.

Furthermore, the other end of the second cable body may be directly connected to the load section, or may be indirectly connected to the load section via the connecting cable body.

Here, when one end of the second cable body provided inside the second cylindrical member is indirectly connected to the load part, the following configuration can be mentioned as a specific configuration of the connection member. .

For example, the configuration of the connection member in this case includes a plurality of connection cable bodies, and the upper end of any one of the plurality of connection cable bodies is connected to the lower end of each of the plurality of second cable bodies. , the lower ends of the plurality of connecting cables are connected to the load section. Here, the connecting cable is a rope, wire, or the like.

Note that, like the first cylindrical member, the second cylindrical member may be fixed to the outside of the air sac by heat welding or may be fixed to the outside of the air sac with an adhesive.

Further, in one embodiment, the second cylindrical member is made of resin (for example, polyethylene), like the first cylindrical member, but the second cylindrical member is made of resin. Not limited.

Further, there is a possibility that the second cylindrical member receives a strong force from the second cable at both ends thereof. Therefore, it is preferable that the second cylindrical member has increased strength at both ends thereof. A specific structure for increasing the strength of both ends of the second cylindrical member is to make the thickness of both ends of the second cylindrical member thicker than other parts. For example, each end may have a structure in which the sheet-like component of the second cylindrical member is folded back, or the end of the second cylindrical member may be It is also possible to have a structure in which only another sheet-like component is attached.

Moreover, the material of the second cord is the same as that of the first cord.

Further, the flying object may further include a duct member attached to the inside of the air bag along the meridian from the top of the air bag for introducing gas into the inside of the air bag. The shape, position, and number of the duct members attached to the inside of the air bladder may be arbitrary. By providing the duct member in this manner, gas can be efficiently introduced into the air bladder.

Further, the flying object may be a gas balloon in which buoyancy is generated by filling the air bladder with a lightweight gas, or a hot air balloon in which buoyancy is generated by filling the air bladder with heated air. Furthermore, the flying object is not limited to a balloon, but may also be an airship.

[Production method of flying object]
The method for manufacturing a flying object of the present invention is a method for forming the above-mentioned flying object, in which a plurality of sheet-like pieces to which a first cylindrical member is fixed are used as a plurality of air bladder pieces that are constituent elements of the air bladder in the flying object. The other configurations may be arbitrary as long as they include the step of forming an air sac piece and the step of sequentially joining a plurality of sheet-like air sac pieces to form an air sac.

(Formation of sheet-like air sac fragments)
The sheet-like air sac piece to which the first cylindrical member is fixed is obtained by stacking a lower air sac piece and an upper air sac piece, heat welding the respective sides, and then adding a joint between the lower air sac piece and the upper air sac piece. It may be formed by joining the first cylindrical member to the first cylindrical member. Alternatively, the sheet-like air sac piece may be formed by fixing the lower air sac piece and the upper air sac piece together with the first cylindrical member.

Further, the sheet-like air sac piece to which the first cylindrical member is fixed is not limited to the method of forming the two parts (lower air sac piece and upper air sac piece) by joining together as described above. The sheet-like air bladder piece may be formed by folding at least a portion of one air bladder piece material and joining the first cylindrical member to the folded portion.

In these cases, the obtained sheet-like air sac piece has a structure with a first cylindrical member, and the first cable body is made by connecting a plurality of such sheet-like air sac pieces with the first cylindrical member. After the air sac is formed, it can be attached to the air sac by passing it through the first cylindrical member of each sheet-like air sac piece.

Furthermore, in the step of forming the air sac piece, a sheet-like air sac piece may be formed integrally with the first cylindrical member. That is, in the step of forming an air sac piece, at least a part of one air sac piece material is folded to form a first folded part, and at least a part of the first folded part is folded and then a second folded part is formed. (double folded part), and then at least a part of the second folded part may be welded so that a cylindrical part through which the first cable passes is formed.

(Formation of air sacs)
The air sac formation step is a step of joining adjacent sheet-like air sac pieces by overlapping two of the plurality of sheet-like air sac pieces and thermally welding one side edge of each. Alternatively, two sheet-like air bladder pieces may be overlapped and one side edge of each may be fixed with an adhesive.

(Attachment of first cord and first cylindrical member in air bladder)
Here, in the step of attaching the first cable body, after forming an air sac by connecting the air sac pieces with the first cylindrical member, the plurality of first cables attached to the plurality of air sac pieces constituting the air sac are It may be a step of inserting the first cable body through the cylindrical member.

Alternatively, the step of attaching the first cable body may include forming an air sac by connecting air sac pieces to which the first cylindrical member is not attached, and forming a plurality of air sacs along the latitude on the lower half side of the surface of the air sac. The step of inserting the first cable body through the plurality of first cylindrical members may be performed after the first cylindrical members are attached.

(Attachment of second cord and second cylindrical member in air bladder)
Furthermore, the step of attaching the second cord may be a step of fixing the second cord directly to the outside of the air sac along each of the plurality of meridians of the air sac, or alternatively, the second cord may be attached to each of the plurality of meridians of the air sac. It may also be a step of fixing the second cylindrical member, into which the second cable body is inserted, to the outside of the air bladder along the .

Alternatively, the step of attaching the second cable body may include forming an air bag to which a plurality of second cylindrical members are fixed along each of a plurality of meridians, and then attaching a second cylindrical member to the inside of each second cylindrical member. It may also be a step of inserting the second cord.

Here, the second cylindrical member is fixed to the air sac by stacking two sheet-like air sac pieces out of the plurality of sheet-like air sac pieces and thermally welding one side edge of each to form the air sac. In this case, the second cylindrical member may be superimposed on the side edges of the two sheet-like air bladder pieces and they may be heat-welded at the same time.

In this way, when the second cable body is attached to the air bladder in addition to the first cable body, a joining process is required to join the second cable body and the first cable body. In one embodiment, the joining step is a step of folding the end of the second cable body into a loop so as to surround the first cable body and connecting it to the first cable body. When the first cord and the second cord are band-shaped cloth members, suturing can be used to connect the first cord and the second cord.

In particular, after passing the first cable body through the first cylindrical member and passing the second cable body through the second cylindrical member, the first cable body and the second cable body are passed through the first cable body and the second cable body. In the joining process of joining at the intersection of the bodies, the end of the second cable body is folded back into a loop shape so that it surrounds the first cable body, and the folded part and the folded part of the second cable body are separated. It is preferable that the overlapping portion be joined by suturing. This is because, compared to the case where the first cable body and the second cable body are simply overlapped and sutured, the load applied to the sutured portion is reduced by the amount that the end of the second cable body is folded back. be.

[Parts for flying objects]
In the present application, a member (a member for a flying object) used in the above-mentioned flying object of the present invention is also a subject of the invention, and the flying object member of the present invention will be described below.

A member for a flying object according to the present invention includes a plurality of air bladder pieces constituting an air bladder and a first cylindrical member attached to each of the plurality of air bladder pieces, and the first cylindrical member is attached to a first cylindrical member. Any structure may be used as long as it is configured to allow the passage of the cord, and other structures are not limited and may be arbitrary. This is because by configuring a flying object using flying object members having such a configuration, each of the plurality of air sac pieces constituting the air sac has a first cable body located along the latitude line. As a result, the first cylindrical member and the first cable body cause the sheet-like member constituting the air bladder to hang upward. This is because it becomes possible to realize a flying object that can suppress lifting due to force (external force such as buoyancy or updraft).

Here, the first cylindrical member may be a ring-shaped member provided along the entirety of one latitude line, or an arc-shaped member provided at regular intervals along a part of one latitude line. It may be a plurality of members. Further, the first cylindrical member may include a heat-weldable material and may be heat-welded to the air bladder, or may include a material that does not melt by heat and may be fixed to the air bladder with an adhesive. .

Further, the first cylindrical member included in the flying object member may be one in which the first cable can be taken in and out through openings formed at both ends thereof, but the first cylindrical member may be As described above, other apertures may be provided instead of the apertures at both ends, and the apertures may be used as the entrance and exit for the first cable body.

Further, the first cylindrical member may have a structure with a uniform thickness, but as described above, the first cylindrical member may have a structure in which the thickness at both ends is thicker than the thickness at the parts other than the both ends. It may be something you have done.

Note that the first cable body passing through the first cylindrical member is not limited in shape or material, and may be of any shape or material. For example, the first cable body may be a linear member with a cross section that is approximately circular, square, or elliptical. However, the present invention is not limited thereto.

Further, the material of the first cable body may be, for example, cloth, fiber, metal, or resin.

Furthermore, in addition to the air bladder piece and the first cylindrical member, the flying object member includes a second cylindrical member attached to the joining edge of adjacent air bladder pieces, and a second cylindrical member that passes through the inside of the second cylindrical member. It is preferable that the second tubular member includes a heat-weldable material, and that the cable has higher heat resistance than the second tubular member. In this case, the second cylindrical member can be fixed to the air bladder piece by heat welding, and when the second cylindrical member is heat welded, the cord passed through the second cylindrical member is melted. can be avoided.

Here, the second cylindrical member may include a material that does not melt by heat, and may be fixed to the air bladder with an adhesive.

Furthermore, this cable body may be passed inside the second cylindrical member and used as a second cable body to disperse the load of the load section applied to the air bladder, or It may be a leading rope body for drawing the second rope body into the cylindrical member.

Note that the second cable body passing through the second cylindrical member may have any shape or material like the first cable body. In addition, when it has a first cord and a second cord, the shape and/or material of the first cord and the second cord may be the same or may be different. .

[Method for manufacturing flying object components]
The method of manufacturing a member for a flying object according to the present invention is a method for forming the above-mentioned member for a flying object, and includes an air bladder piece forming step of forming an air bladder piece for constructing an air bladder. The air sac piece formation step can be any method. For example, the air sac pieces may be formed by fixing the side edges of the lower air sac piece and the upper air sac piece to the end of the first cylindrical member, or the air sac pieces may be formed by forming one air sac piece. The first cylindrical member may be formed by folding at least a portion of the piece material to form a folded portion and fixing the end of the first cylindrical member to the folded portion.

Alternatively, the air sac pieces may be formed by folding at least a portion of one air sac piece material to form a first folded portion, and folding at least a portion of the first folded portion to form a second folded portion (double folded portion). The second folded part may be formed by welding at least a portion of the second folded part so that a cylindrical part is formed in the second folded part.

Further, the method for manufacturing a flying object member of the present invention preferably includes, in addition to the above-mentioned air bladder piece forming step, a member forming step of forming a second cylindrical member through which the cable is passed. In this case, the air sac can have a structure in which a second cylindrical member through which the cable is passed is fixed along the meridian, and in this structure, the load applied to the air sac is distributed by the second cable. This is because it becomes possible.

However, the method of forming the second cylindrical member through which the second cable is passed is not limited. For example, in one embodiment, the member forming step includes a step of arranging the cord so as to be in contact with the strip member, a step of folding the strip member along the longitudinal direction so as to sandwich the cord, and a step of folding the strip member along the longitudinal direction of the strip member. Then, while the cable body is placed in the first region that does not exceed a predetermined distance from the crease, in the second region (a region other than the first region) that exceeds the predetermined distance from the crease, The method includes a step of welding the folded portions.

Here, the cable may be a second cable for suspending the load part from the air sac during flight of the projectile, or a second cable for suspending the air sac during flight of the projectile. It may be a leading rope body for passing the body through the second cylindrical member. If the cable passed through the second cylindrical member is a leading cable, this can be used to pass the second cable for suspending the air bladder through the plurality of second cylindrical members. It is possible.

As described above, the flying object of the present invention includes the first cylindrical member and the first cable body, the first cylindrical member is provided outside the air bladder along a predetermined latitude line of the air bladder, and the first Other configurations are not particularly limited as long as the first cable body is movably provided inside the cylindrical member, but in the following embodiments, a plurality of flying bodies are used. a first cylindrical member, one ring-shaped first cable body, a plurality of second cylindrical members, and a plurality of second cable bodies, and a plurality of second cable bodies. Here, one end of the balloon is connected to the zenith of the air bladder, and the other end is connected to the load section via a connecting cord. Further, in this embodiment, polyethylene resin sleeves (horizontal sleeve and vertical sleeve) are used for the first cylindrical member and the second cylindrical member, and the first and second cylindrical members are A belt-like member made of nylon, Tetron, or polyester shall be used.

Note that the first cylindrical member and the second cylindrical member in the balloon are generally called a guide sleeve, and the first cable and the second cable in the balloon are generally called a load tape. In the description of the form, the first cylindrical member is referred to as a horizontal sleeve, and the second cylindrical member is referred to as a vertical sleeve. The first cable body is also called a horizontal load cable because it is arranged horizontally in the usage situation, and the second cable body is also called a vertical load cable because it is arranged vertically.

(Embodiment)
Embodiments of the present invention will be described below with reference to the drawings.

[Structure of flying object 100]
FIG. 1 is a perspective view showing the appearance of a flying object 100 according to an embodiment of the present invention, FIG. 1(a) shows the structure of the flying object 100 viewed from above, and FIG. 1(b) The structure of the flying object 100 viewed from below is shown.

This flying object 100 is a gas balloon that generates buoyancy using lightweight gas. Here, examples of the light gas include helium gas and hydrogen gas. Further, the flying object 100 is not limited to a gas balloon, but may be a hot air balloon that utilizes the buoyancy of heated air.Furthermore, the flying object 100 is not limited to a balloon. , or an airship. That is, the flying object 100 of the present invention includes not only the balloon or airship illustrated in the embodiment, but also one that flies by using the buoyancy of lightweight gas.

This flying object 100 includes an air bladder 110 that generates buoyancy, a load section 120 that applies a load to the air bladder 110, a connecting member 130 that connects the air bladder 110 and the load section 120, and a reinforcing member 140 for the air bladder 110. ing.

FIG. 2 is a side view showing the arrangement of the components of the flying object 100 shown in FIG. b) shows the positional relationship between the vertical sleeve (second cylindrical member) 30b included in the connecting member 130 and the horizontal sleeve (first cylindrical member) 40b included in the reinforcing member 140.

(air sac 110)
The air bladder 110 is a bag-like sheet body that is filled with statically buoyant gas that is lighter than air (light gas) so that when inflated, it becomes a hollow, approximately spherical structure and generates buoyancy. As shown in FIGS. 1 and 2, it is composed of a plurality of sheet-like air sac pieces (hereinafter also referred to as sheet-like air sac pieces) 10. Although six sheet-like air sac pieces 10 are shown here as the plurality of sheet-like air sac pieces composing the air sac 110, the number of the plurality of sheet-like air sac pieces composing the air sac 110 is not limited. The number may be 6 or more (eg, 12, 16, etc.) or less (eg, 4, etc.).

Here, the sheet-like air sac piece 10 has a boat-like shape with both ends tapered gradually, and therefore, a plurality of sheet-like air sac pieces having such a shape are arranged so that the arcuate side edges are adjacent to each other. By arranging them in an annular shape and joining the side edges of adjacent ones, a bag-like sheet body (air bladder) that has a hollow, substantially spherical structure when inflated is formed. Note that the boat-shaped shape of the sheet-like air sac piece 10 is the shape when the side surface of the spindle is viewed from a direction perpendicular to its central axis (see FIG. 3(b)).

The material of this sheet-like air bladder piece 10 may be any material commonly used for balloon skins. For example, nylon, polyester, or polyethylene.

(Load part 120)
In the case of a gas balloon, the load section 120 is a section on which passengers, positioning instruments, observation equipment, etc. are placed. Specifically, the load section 120 is a container with an open top (basket) or a container whose interior can be sealed ( Airtight cabins) etc. are used. Note that in the case of a hot air balloon, a heating device (burner) that heats the air inside the air bladder is mounted on the load section.

(Connection member 130)
As shown in FIG. 2(a), the connection member 130 includes a plurality of vertical sleeves (second cylindrical members) 30b, a plurality of vertical load cables (second cable bodies) 30a, and a plurality of connection ropes ( It has a connecting cord body) 30c. Here, six vertical sleeves 30b, six vertical load cables 30a, and six connecting ropes 30c are provided. Note that the number of vertical sleeves 30b, vertical load cables 30a, and connecting ropes 30c is usually provided in a number corresponding to the number of sheet-like air bladder pieces 10 that constitute the air bladder 110. This is because the vertical sleeve 30b and the vertical load cable 30a are provided along the joint between adjacent sheet-like air bladder pieces 10, as will be described later. Note that the vertical sleeve 30b, the vertical load cable 30a, and the connecting rope 30c are provided for each of the plurality of sheet-like air sac pieces 10 constituting the air sac 110. They may be provided at predetermined intervals such that the number is less than 1, or they may be provided at intervals such as one at a time.

As shown in FIG. 2(b), the vertical sleeve 30b is fixed to the air bladder 110 along a plurality of predetermined meridians M (here, six meridians in which the separation angle between adjacent meridians is 60°). A vertical load cable 30a is movably provided inside each vertical sleeve 30b. Here, the upper end of the vertical load cable 30a is connected to the zenith part 110a of the air bag 110, the lower end of the vertical load cable 30a is connected to the upper end of the connecting rope 30c, and the lower end of the connecting rope 30c is connected to the load section 120. (See Figure 2(a)).

In this way, in the flying object 100, the load section 120 is connected to the air bladder 110 by the connecting member 130, so when the flying object 100 is in flight, the load is The portion 120 is suspended from the air bladder 110 that generates buoyancy.

Note that the vertical sleeve 30b may receive a strong force from the vertical load cable 30a at its upper and lower ends, so it is preferable that the vertical sleeve 30b has increased strength at its upper and lower ends. A specific reinforcement method is to increase the thickness of the end of the vertical sleeve 30b. The method for increasing the thickness is not limited, but each end may have a structure in which a sheet-like component is folded back, or another sheet-like component may be attached only to the end. It is also possible to have an attached structure.

(Reinforcement member 140)
The reinforcing member 140 has a plurality of (six in this case) horizontal sleeves 40b and one horizontal load cable 40a, and the plurality of horizontal sleeves 40b are connected to the air bag 110 as shown in FIG. 2(b). They are attached along the entire circumference of the latitude line L at predetermined intervals (approximately 60° intervals) along one latitude line L on the lower half side. This latitude line L is located at a position of about 135° with the zenith of the air bladder 110 being 0°. One ring-shaped horizontal load cable 40a is movably inserted inside the plurality of horizontal sleeves 40b, and the portion of the horizontal load cable 40a exposed between adjacent horizontal sleeves 40b is It intersects with the lower end of the load cable 30a, and the horizontal load cable 40a and the vertical load cable 30a are joined at this intersection.

In this way, a plurality of horizontal sleeves 40b are attached to the air bag 110 at predetermined intervals around the entire circumference of the air bag 110, the horizontal load cable 40a is passed through these horizontal sleeves 40b, and the horizontal load cable 40a is connected to the adjacent horizontal sleeve. 40b to the lower end of the vertical load cable 30a, even if a force is applied to the air bag 110 in a direction in which the sheet-like member that makes up the air bag 110 slides up during flight, the connection between the adjacent vertical load cables 30a is prevented. It becomes possible to suppress the lifting of the bulb (sheet-like air sac piece 10).

This is because the lower end of the vertical load cable 30a is fixed to the load section 120 by the connecting rope 30c, and the horizontal load cable 40a is joined to the lower end of the vertical load cable 30a, so such a horizontal load cable 40a is inserted. This is because the horizontal sleeve 40b is restricted from moving upward by the horizontal load cable 40a.

Note that the horizontal sleeve 40b may receive a strong force from the horizontal load cable 40a at both ends thereof, so it is preferable that the horizontal sleeve 40b has increased strength at both ends thereof. A specific method of reinforcement is to increase the thickness of the end portion of the horizontal sleeve 40b. The method for increasing the thickness is not limited, but each end may have a structure in which the sheet-like component is folded back, or another sheet-like component may be attached only to the end. It is also possible to have an attached structure.

Further, the horizontal sleeve 40b may have an opening for inserting and removing the horizontal load cable 40a into and out of the cylindrical member of the horizontal sleeve 40b, in addition to the openings at both ends. By providing such an opening, that is, a hole through which the horizontal load cable 40a passes, in the horizontal sleeve 40b, the tensile load applied to the welded interface between the horizontal sleeve 40b and the bulb constituting the air bag is dispersed, and the horizontal sleeve It becomes possible to suppress the tearing of the bulb at the end of 40b. Here, the shape of the aperture is not limited, and may be a circular aperture or a polygonal aperture such as a quadrangle or a hexagon.

In the flying object 100 of this embodiment having such a configuration, the air bag 110 connects the vertical sleeve 30b and the vertical load cable 40a of the connection member 130, and the horizontal sleeve 40b and the horizontal load cable 40a that constitute the reinforcing member 140, to the air bag 110. It has a structure in which it is integrated into a sheet-like member (a plurality of air sac pieces 10 joined together) that constitutes the air sac 110.The specific structure of the air sac 110, in which the plurality of structural members are integrated, will be explained in detail below. do.

(Specific configuration of air sac 110)
FIG. 3 is a diagram showing the structure of the air sac 110 in which the horizontal sleeve 40b is integrated, FIG. 3(a) shows the entire air sac 110, and FIG. The air sac piece 10 is shown, and FIG. 3(c) is an enlarged view of the structure taken along the line IIIa-IIIa in FIG. 3(b).

As shown in FIG. 3(a), the air sac 110 is composed of a plurality of (six in this case) boat-shaped sheet-like air sac pieces 10, and the side edges of the adjacent sheet-like air sac pieces 10 are connected to each other. It is joined. 1 to 3, etc., the air bladder 110 is shown as being composed of six sheet-like air bladder pieces 10, but in practice, a larger number of sheets (for example, 16) may be used. It is composed of air sac pieces 10. If the air sac 110 is made up of a larger number of sheet-like air sac pieces 10, it will have a shape closer to a sphere when inflated, increasing the strength of the air sac 110, but it will take more time to assemble. Conversely, if the number of sheet-like air sac pieces 10 that make up the air sac 110 is reduced, the assembly effort can be saved, but the shape of the air sac 110 when inflated will move away from the spherical shape, and the load on the air sac 110 will be reduced to a specific point. as a result, the strength of the air sac 110 decreases.

As shown in FIGS. 3(b) and 3(c), each sheet-like air sac piece 10 includes a lower air sac piece 10a, an upper air sac piece 10b, and a horizontal sleeve 40b, which are integrally bonded by heat welding. It is joined to.

Here, when the lower air sac piece 10a and the upper air sac piece 10b are joined, they become a boat-shaped sheet-like air sac piece 10, and furthermore, their joint part 10c is from the zenith with the zenith of the inflated air sac 110 being 0°. It has a shape that is located approximately 135 degrees down in the meridian direction.

Further, a joint 10c between the lower air sac piece 10a and the upper air sac piece 10b is formed to be located outside the air sac 110, and a horizontal sleeve 40b is fixed to this joint 10c by heat welding. .

As shown in FIG. 3(c), the horizontal sleeve 40b includes a sleeve fixing part (also simply referred to as a fixing part) 40b1 that is fixed to the sheet-like air bladder piece 110, and a sleeve cylindrical part for passing the horizontal load cable 40a. (also simply referred to as a cylindrical body part) 40b2, and a fixed part 40b1 of the horizontal sleeve 40b is fixed by heat welding to the upper surface of the joint part 10c of the sheet-like air bladder piece 110, and the sleeve cylindrical part 40b2 stands obliquely from the sleeve fixing portion 40b1 so that the upper side thereof approaches the sheet-like air bladder piece 110. Note that, for example, a heat-weldable polyethylene tube is used for the horizontal sleeve 40b. However, the horizontal sleeve 40b is not limited to one that can be heat-welded, and may be made of other plastic tubes. In that case, the horizontal sleeve 40b is fixed to the joint 10c of the sheet-like air bladder piece 10 with an adhesive.

FIG. 4 is a diagram showing a state in which the horizontal load cable 40a is passed through the horizontal sleeve 40b of the air bag 110 shown in FIG. 3, and FIG. 4(b) shows the structure of the reinforcing member 140 in one air bladder piece 10, and FIG. 4(c) shows the structure of the cross section taken along the line IVa-IVa in FIG. 4(b). 4(d) shows a state in which the joint portion 10c is folded downward, and FIG. 4(e) shows a state in which the air sac piece 10 is lifted up relative to the horizontal load cable 40a in the state shown in FIG. 4(d). Shows a state where a directional force is applied.

The horizontal load cable 40a passes the cable member sequentially from a predetermined one of a plurality of horizontal sleeves 40b lined up along the latitude lines, and with the cable member passed through all the horizontal sleeves 40b, the opposing tip and rear ends of the cable member are connected to each other. The ends are connected. The cable members may be connected by stitching if the cable members are strip-shaped cloth tapes, or by untying the strands of the wires if the cable members are stranded metal wires. Alternatively, if the cable member is a resin tape, it may be connected using heat welding or an adhesive.

As shown in FIGS. 4(b) and 4(c), when one ring-shaped horizontal load cable 40a is passed through the horizontal sleeve 40b of the plurality of sheet-like air bladder pieces 10 constituting the air bladder 110, the adjacent As shown in FIG. 4(a), a portion of the horizontal load cable 40a is exposed between the horizontal sleeves 40b, and one end of the vertical load cable 30a is connected to this exposed portion.

(Example of attachment direction of the first cylindrical member to the sheet-like air bladder piece 10)
In addition, in the sheet-like air sac piece 10 shown in FIG. 3, the horizontal sleeve 40b has a joint (horizontal joint) 10c between the lower air sac piece 10a and the upper air sac piece 10b facing downward as shown in FIG. 4(d). The horizontal sleeve 40b is attached to the horizontal joint portion 10c so as to face upward in the folded state.

Here, the upward direction of the horizontal sleeve 40b means that the horizontal sleeve 40b includes a sleeve cylindrical portion 40b2 through which the horizontal load cable 40a is passed, and a sleeve fixing portion 40b1 heat-welded to the air bag, as shown in FIG. 4(d). As shown, the boundary portion 40b3 between the cylindrical body portion 40b2 and the fixed portion 40b1 is positioned above the end portion of the fixed portion 40b1 on the opposite side to the cylindrical body portion 40b2.

In this case, the side edges of the horizontal joints of the air bladder pieces and the side edges of the fixed portions of the horizontal sleeve 40b can be aligned and welded together, making it easy to attach the horizontal sleeve 40b to the air bladder. This is effective when the force acting on the air sac is expected to be small (for example, when the flying object is small).

However, if a large force is applied in the direction of lifting the air bladder piece 10 relative to the horizontal load cable 40a with the horizontal joint portion 10c folded downward as shown in FIG. 4(d), ), a force acts in a direction to roll up the horizontal sleeve 40b from the root portion of the horizontal joint portion 10c (portion P2 in FIG. 4(e)), and there is a risk that the horizontal sleeve 40b may be peeled off.

In contrast, as shown in FIG. 4A, the horizontal sleeve 40b has a joint (horizontal joint) 10c between the lower air sac piece 10a and the upper air sac piece 10b facing downward as shown in FIG. 4A(c). It is preferable that the horizontal sleeve 40b is attached to the horizontal joint part 10c so as to face downward in the folded state, which will be explained below using the drawings.

FIG. 4A shows a modification of one sheet-like air sac piece 10 produced by joining two parts (lower air sac piece 10a and upper air sac piece 10b) shown in FIG. Fig. 4 is a diagram showing an air bladder piece in which a horizontal sleeve 40b is attached to part) 10c with the horizontal sleeve 40b facing downward, that is, with the cylindrical body part 40b2 positioned below the fixed part 40b1. 4A(a) shows the structure of the reinforcing member 140a in one air bladder piece 10, FIG. 4A(b) shows the structure of the cross section taken along the line IVb-IVb in FIG. 4A(a), and FIG. 4A(c) shows the structure of the reinforcing member 140a in one air bladder piece 10. 4A(d) shows a state in which the joint 10c is folded downward, and FIG. 4A(d) shows a state in which a force is applied in the direction of lifting the air bladder piece relative to the horizontal load cable in the state shown in FIG. 4A(c). show.

That is, in the sheet-like air sac piece 10, as shown in FIGS. 4A (a) and (b), the horizontal sleeve 40b has a joint (horizontal joint) 10c between the lower air sac piece 10a and the upper air sac piece 10b. It is preferable that the horizontal sleeve 40b is configured to face downward when folded downward as shown in FIG. 4A(c). Here, the downward direction of the horizontal sleeve 40b means that the horizontal sleeve 40b has a boundary portion 40b3 between the sleeve cylindrical body portion 40b2 and the sleeve fixing portion 40b1 as shown in FIG. 4A(c). This is the orientation when the cylinder body portion 40b2 is located below the end portion on the opposite side.

In this case, when a force is applied in the direction of lifting the air sac piece relative to the horizontal load cable in the state shown in FIG. 4A(c) (FIG. 4A(d)), the horizontal joint 10c of the sheet-like air sac piece 10 This is because the force that tries to peel off the sleeve fixing portion 40b1 of the horizontal sleeve 40b from the horizontal sleeve 40b is dispersed throughout these joints (part P1 in FIG. 4A(d)), and the horizontal sleeve 40b can be prevented from peeling off. .

(Other examples of the shape of the horizontal sleeve 40b)
Further, the shape of the horizontal sleeve 40b may be cylindrical, the thickness may be different depending on the location, or the sleeve openings 41b3 for inserting and removing the horizontal load cable 40a are provided at both ends of the sleeve. It is not limited to this, and may be formed on the side wall of the sleeve.

FIG. 4B shows a horizontal sleeve 41b in which the thickness of both ends 41b0 is thicker than the thickness of the parts other than the both ends, and the horizontal load cable 40a is inserted into and taken out from the horizontal sleeve 41b on the side walls of both ends. FIG. 10 is a diagram showing a sleeve opening 41b3 formed therein for the purpose of forming the sleeve opening 41b3. FIG. 4B(a) shows how the reinforcing member 141 is attached to one air bladder piece 10, FIG. 4B(b) shows an enlarged view of the R1 portion of FIG. 4B(a), and FIG. 4B(c) shows A cross section taken along the line IVc-IVc in FIG. 4B(b) is shown, and FIG. 4B(d) shows how the horizontal load cable 40a is passed through the horizontal sleeve 41b of the reinforcing member 141.

In the horizontal sleeve 41b included in the reinforcing member 141 shown in FIG. 4B, sleeve openings 41b3 for taking out the horizontal load cable 40a from inside the horizontal sleeve 41b are formed at both ends 40b0 of the side wall forming this. . By providing such an opening, that is, a hole through which the horizontal load cable 40a is passed, at both ends 41b0 of the horizontal sleeve 41b (horizontal sleeve both ends), the welding interface between the horizontal sleeve 41b and the bulb constituting the air sac is By dispersing this tensile load, it is possible to suppress the tearing of the bulb at both ends 41b0 of the horizontal sleeve 41b. In addition, in FIG. 4B, 41b1 is a sleeve fixing part, and 41b2 is a sleeve cylindrical body part.

FIG. 4C is a diagram showing how the horizontal load cable 40a passes through each opening 41b3 between adjacent horizontal sleeves 41b when the horizontal sleeve 41b shown in FIG. 4B is used. ) shows the arrangement of horizontal load cables between adjacent sheet-like air bladder pieces joined by vertical joints 30c, and FIG. 4C(b) shows an enlarged view of the R2 portion of FIG. 4C(a).

As shown in FIGS. 4C (a) and 4C (b), in the horizontal sleeve 41b located on both sides of the vertical joint 30c which is the joint of adjacent air bladder pieces, the horizontal load cable 40a is connected to both ends of the horizontal sleeve 41b. It goes in and out of the horizontal sleeve 41b not through an opening but through an opening 41b3 located on the inside of both ends. For this reason, tearing of the constituent members (bulbs) at both ends of the horizontal sleeve 41b can be suppressed.

Here, as shown in FIGS. 3(b) and 3(c), the sheet-like air sac piece 10 is a joint (horizontal joint) between two parts, a lower air sac piece 10a and an upper air sac piece 10b. Although the horizontal sleeve 40b is joined to part) 10c, the sheet-like air bladder piece constituting the air bladder 110 of this embodiment is not limited to this, and the air bladder 110 is a sheet made from two parts. Instead of the air sac piece 10, a sheet-like air sac piece 61 made from one component may be used.

As shown in FIGS. 4D(a) to 4D(f), this sheet-like air sac piece 61 is formed by folding and welding at least a part (folded part) 61c of the air sac piece material 60a, which is one component. The horizontal sleeve 40b may be integrally joined.

4D(a) and (b) are views showing one air sac piece material 60a, and FIGS. 4D(c) and (d) are views showing one air sac piece material 60a folded into a sheet shape. 4D(e) and (f) are views showing a state in which the horizontal sleeve 40b is fixed to the folded portion 61c of the sheet-like air bladder piece 61. FIG.

As shown in FIGS. 4D(a) to (d), a sheet-like air sac piece 61 formed by folding at least a portion of one air sac piece material 60a includes a lower air sac piece 61a, an upper air sac piece 61b, and a space between them. It includes a folded portion (folded portion) 61c located at . Furthermore, a horizontal sleeve 40b is fixed to the folded portion 61c of the sheet-like air bladder piece 61, as shown in FIGS. 4D(e) and (f).

Here, the folded part 61a is the boundary between the lower part 61a of the air sac piece material 60a and the folded part 61c (the part shown by the one-dot chain line), and the boundary between the upper part 61b of the air sac part 61b and the folded part 61c ( The air sac piece material 60a is valley-folded about 90 degrees at the part shown by the one-dot chain line), and the air sac piece material 60a is mountain-folded about 180 degrees at the center of the bent part 61c (the part shown by the two-dot chain line). This is a portion formed by folding the folded portion 61c of the air bladder piece material 60a.

Furthermore, the sheet-like air bladder piece constituting the air bladder 110 of this embodiment may be constructed using the sheet-like air bladder piece 71 with a first cylindrical member made from one component.

FIG. 4E shows a sheet-like air sac piece 71 made by folding one part double, as a sheet-like air sac piece 71 made by folding one part double, as a sheet-like air sac piece instead of one sheet-like air sac piece 10 made by joining two parts shown in FIG. FIG. 2 is a diagram showing the manufacturing process.

4E(a) and (b) show one air sac piece material 70a, and FIGS. 4E(c) and (d) show a part (portion to be folded) 71c of one air sac piece material 70a folded and folded. 4E(e) and (f) show a state in which the folding part 71c is folded to form a double folding part 71d, and FIG. 4E(g) shows a state in which a double folding part 71d is formed by folding the folding part 71c. It is an enlarged view of the R3 part of (f), and FIG. 4E (h) shows that the gap Sp (FIG. 4E (g)) of the double folding part 71d becomes a space for passing the horizontal load cable 40a.

As shown in FIGS. 4E(a) to (f), a sheet-like air sac piece 71 formed by folding at least a portion of one air sac piece material 70a includes a lower air sac piece 71a, an upper air sac piece 71b, and a space between them. It includes a folded portion (double folded portion) 71d located at . Further, the double folded portion 71d of the sheet-like air sac piece 71 includes a horizontal sleeve 42b as shown in FIGS. 4E(g) and (h).

Here, the folding part (first folding part) 71c is the boundary between the air sac piece lower part 71a and the folding target part 71c0 of one air sac piece material 70a (the part shown by the dashed line), and the air sac piece upper part 71b. The air sac piece material 70a is valley-folded approximately 90 degrees at the boundary between the folding target part 71c0 (the part shown by the dashed-dotted line), and the air sac piece material 70a is folded at the center of the folding target part 71c0 (the part shown by the two-dot chain line). This is a portion formed by folding the folding target portion 71c0 of the air bladder piece material 70a so that it is mountain-folded by about 180 degrees.

Further, the double folding part (second folding part) 71d folds the distal end side 711 of the folding part 71c toward the root part 712 toward the upper side of the bulb as shown by the arrow in FIG. 4E(d). This is a portion formed by further thermally welding only the distal end portion (sleeve fixing portion) 42b1 (FIGS. 4E(e) to (g)).

Furthermore, in a portion (sleeve cylindrical body portion) 42b2 other than the sleeve fixing portion 42b1 included in this double folded portion 71d, as shown in FIG. 4E(h), an internal gap Sp serves as a passage for passing the horizontal load cable 40a. It has become.

FIG. 5 is a perspective view showing the specific structure of the vertical sleeve 30b and the vertical load cable 30a, and FIG. b) shows the vertical load cable 30a shown in FIG. 5(a) taken out, and FIG. 5(c) shows the vertical sleeve 30b shown in FIG. 5(a) taken out.

As shown in FIG. 2(b), vertical sleeves 30b are fixed to the vertical joints 10d (see FIG. 5(a)) of adjacent sheet-like air bladder pieces 10 in the air bladder 110 along a plurality of meridians M. As shown in FIG. 5(a), a vertical load cable 30a is movably passed through the inside of the vertical sleeve 30b. Here, the vertical sleeve 30b extends along one meridian M from just before the zenith of the air bladder 110 to a position corresponding to approximately 135° with the zenith being 0°, as shown in FIG. 2(b), Further, the vertical load cable 30a passed inside the vertical sleeve 30b is slightly longer than the vertical sleeve 30b so that both ends thereof are exposed from both ends of the vertical sleeve 30b, as shown in FIG. 2(a). It has become.

Further, the horizontal sleeve 40b through which the horizontal load cable 40a is passed is connected to the welded side edge of the adjacent sheet-like air bladder piece 10 (the vertical joint 10d in FIG. 5(a)). In order to be exposed, the width is shorter than the width of the sheet-like air bladder piece 10 at the position of the latitude line L (see FIG. 2(b)) along which the horizontal sleeve 40b follows.

That is, at the intersection between the lower end portion (cable lower end portion) 32 of the vertical load cable 30a and the horizontal load cable 40a, both are exposed. Therefore, the lower end of the vertical load cable 30a is joined to the horizontal load cable 40a between adjacent horizontal sleeves 40b.

The vertical sleeve 30b includes a fixed piece (also referred to as a sleeve fixed piece) 30b1 fixed to the air bladder 110, as shown in FIG. 5(c), and a tube through which the vertical load cable 30a shown in FIG. 5(b) is passed. The sleeve fixing piece 30b1 has a welded side edge of the adjacent sheet-like air bladder pieces 10 in the air bladder 110, as shown in FIG. 5(a). (vertical joint portion 10d). Here, the hatched area of the sleeve fixing piece 30b1 in FIG. 5(a) is a portion that is heated when the vertical sleeve 30b is overlapped and thermally welded to the side edges of the two sheet-like air bladder pieces 10. .

Further, the upper end portion (cable upper end portion) 31 of the vertical load cable 30a is fixed to the zenith ring material 101, and the lower end portion 32 of the vertical load cable 30a is joined to the horizontal load cable 40a as described above, and the connecting rope 30c and will be described in detail below.

FIG. 6 is a diagram for explaining the structure of the end of the vertical load cable 30a, and FIG. 6(a) shows the specific structure of the B part (the zenith part 110a of the air bladder) in FIG. 2(a). FIG. 6(b) is a sectional view taken along the line VIa-VIa in FIG. FIG. 4 is a perspective view specifically showing the structure of a joint portion with a cable 40a.

A ring-shaped fixture 101 is attached to the zenith portion 110a of the air bladder 110, and the upper ends 31 of the plurality of vertical load cables 30a are fixed to this ring-shaped fixture 101.

Specifically, the ring-shaped fixture 101 has an inner ring piece 101b located inside the air sac 110 and an outer ring piece 101a located outside the air sac 110, as shown in FIG. 6(b). The inner ring piece 101b and the outer ring piece 101a sandwich the sheet-like member (that is, the sheet-like air bag piece 10) constituting the air bag 110, and tighten both ring pieces with the fixing bolt 103a and the fixing nut 103b, thereby forming the air bag. It is fixed at 110.

Here, the upper end portion 31 of the vertical load cable 30a is fixed to the outer ring piece 101a with a fixing buckle 102, as shown in FIG. 6(a). Specifically, as shown in FIG. 6(b), the upper end portion 31 of the vertical load cable 30a is wrapped around the outer ring piece 101a and folded back, and this folded portion and the upper end portion 31 of the vertical load cable 30a are The part where the folded part overlaps is fixed with a fixing buckle 102.

On the other hand, the lower end portion 32 of the vertical load cable 30a is joined between adjacent horizontal sleeves 40b at a portion where it intersects with the horizontal load cable 40a. Specifically, a portion (folded portion) 32a obtained by wrapping the lower end portion 32 of the vertical load cable 30a around the horizontal load cable 40a and folding it back is a portion (opposed portion) 32b that faces the folded portion 32a of the vertical load cable 30a. It is fixed with sutures. In addition, in FIG. 6(c), 32d indicates a suture thread (indicated by a thick dotted line).

Further, the upper end (rope upper end) 30c1 of the connecting rope 30c is connected to the loop portion 32c formed by folding the lower end 32 of the vertical load cable 30a by a connecting device 30d. The connecting device 30d fastens the ring-shaped connecting device 30d1 attached to the loop portion 32c of the vertical load cable 30a and the end of the wire wound around the ring-shaped connecting device 30d1 of the rope upper end 30c1 of the connecting rope 30c. A wire fastener (wire clip) 30d2 is included.

Note that although the flying object 100 is provided with the ring-shaped fixture 101 here, the flying object 100 does not need to be provided with the ring-shaped fixture 101. In that case, the upper ends 31 of the plurality of vertical load cables 30a may be directly connected together by a method such as tying, or the upper ends 31 of the plurality of vertical load cables 30a may be connected with adhesive, double-sided tape, etc. It may be connected to the zenith portion 100a of the air bladder 110.

Further, the flying object 100 of the embodiment described above may include an air supply duct (cylindrical member) for feeding lightweight gas from the outside of the air bag 110 into the inside thereof. In this case, the air supply duct is provided, for example, at the inside of the sheet-like member (the plurality of sheet-like air-sac pieces 10 joined to form the air-sac) that constitutes the air-sac 110, at the joint portion of the adjacent sheet-like air-sac pieces. It is attached to the inside of the air sac along the meridian of the air sac, spanning from the top to the bottom of the air sac. In a flying object that has an air duct, a gas cylinder filled with a lightweight gas is connected to the opening at the lower end of the air duct via an air pipe (gas hose, etc.) to fill the interior of the air sac with the lightweight gas. can be easily done from a gas cylinder.

[Method for manufacturing flying object 100]
Next, a method for manufacturing the flying object 100 will be explained.

7 to 13 are diagrams showing a method for manufacturing the flying object 100.

In manufacturing the flying object 100 described above, first, members used in the flying object 100 (flying object members) are manufactured, and the flying object 100 is manufactured by combining the already manufactured flying object members.

The main components used in this flying object 100 are a sheet-like air bladder piece 10, a horizontal sleeve (first cylindrical member) 40b, a vertical sleeve (second cylindrical member) 30b, and a horizontal load cable (first cylindrical member). The first rope body) 40a, the vertical load cable (second rope body) 30a, the connection rope (connection rope body) 30c, and the load section 120, but in the method for manufacturing the flying object 100 of this embodiment, the flying object The main members that should be prepared in advance as body members are a plurality of sheet-like air sac pieces 10 into which horizontal sleeves 40b are integrated, and a plurality of vertical sleeves 30b through which vertical load cables 30a are passed. The method for producing these will be explained.

7 shows a step of cutting out the parts of the sheet-like air sac piece 10 (lower air sac piece 10a and upper air sac piece 10b), FIG. 8 shows a process of producing the sheet-like air sac piece 10, and FIG. 8(a) 8(c) shows the process of forming the sheet-like air sac piece 10, FIG. 8(c) shows the process of adding the horizontal sleeve 40b to the sheet-like air sac piece 10, and FIG. 8(b) and FIG. 8(d) respectively show the process of forming the sheet-like air sac piece 10. The structure is shown in a section taken along the line VIIIa-VIIIa in a) and in a section taken along the line VIIIb-VIIIb in FIG. 8(c).

(Preparation of air sac piece 10)
First, a sheet-like material 50 made of plastic such as polyethylene, which is a lightweight and high-strength material, is prepared, and from this sheet-like material 50, a boat-shaped sheet-like air sac piece 10, which is a component of the air sac 110 in the flying object 100, is prepared. The parts, that is, the lower air sac piece 10a and the upper air sac piece 10b, are cut out into a shape that matches the size of the air sac 110 (FIG. 7). Here, the lower air sac piece 10a and the upper air sac piece 10b have welding margins 10a1 and 10b1 for thermal welding.

Next, the welding margin 10a1 of the lower air sac piece 10a and the welding margin 10b1 of the upper air sac piece 10b are fixed by heat welding to form a boat-shaped sheet-like air sac piece 10 (FIGS. 8(a) and 8(b) )reference). Furthermore, the sleeve fixing portion 40b1 of the horizontal sleeve 40b is fixed to the joint (horizontal joint) 10c between the lower air bladder piece 10a and the upper air bladder piece 10b by heat welding (see FIGS. 8(c) and 8(d)).

Thereby, the sheet-like air bladder piece 10 with the horizontal sleeve 40b integrated therein is obtained.

The method for forming the sheet-like air sac piece into which the horizontal sleeve 40b is integrated is to separate two parts (the lower air sac piece 10a and the upper air sac piece 10b) from the sheet-like material 50 as explained in FIGS. The method is not limited to one that includes a joining step of cutting out and joining them, but instead of this joining step, one part (air bladder piece material) for making an air bladder piece is cut out from the sheet material 50 and at least a part of it is cut out. It may also include a folding step, and this folding step will be specifically explained below.

8A shows a process of cutting out one air sac piece material 60a as a component of the sheet-like air sac piece 61, and FIG. It shows the process of producing a sheet-like air bladder piece 61 with 40b.

In the method shown in FIG. 8A, a sheet material 50 is prepared in the same manner as in the method shown in FIG. One air bladder piece material 60a having an integral structure as a component is cut out into a shape matching the size of the air bladder 110. Here, the air sac piece material 60a includes a lower part of the air sac piece 61 (lower part of the air sac piece) 61a, a part (upper part of the air sac piece) 61b, and a folded part located between these parts (folded part). Target part) Contains 61c0.

Next, at the boundary between the air sac piece lower part 61a and the folded part 60c0 (the part shown by the one-dot chain line), and at the boundary between the air sac piece upper part 61b and the part to be folded 60c0 (the part shown by the one-dot chain line), the air sac piece material 60a is The part to be folded 60c0 is folded in such a manner that the air sac material 60a is folded in a valley by about 90 degrees, and the air sac piece material 60a is folded in a mountain part by about 180 degrees at the center of the part to be folded 60c0 (the part indicated by the two-dot chain line). At this time, a portion 60c1 of the folding target part 61c0 located on the air bladder piece lower part 61a side and a part 60c2 of the folding target part 61c0 located on the air bladder piece upper part 61b side overlap, forming the folding part 61c. The tatami portion 61c is fixed by heat welding to form a sheet-like air bladder piece 61 (see FIGS. 4D(a) to (d)). Furthermore, the sleeve fixing part 40b1 of the horizontal sleeve 40b is fixed to the folded part 61c of the sheet-like air bladder piece 61 by heat welding (see FIGS. 4D(e) and (f)). Here, the folded portion 61c of the sheet-like air sac piece 61 is a portion corresponding to the horizontal joint portion 10c.

As a result, the sheet-like air bladder piece 61 with the integrated horizontal sleeve 40b is produced by a method different from the method shown in FIGS. 7 and 8.

Furthermore, the method of forming a sheet-like air sac from one component (air sac material) is not limited to that described in FIGS. 4D and 8A, and the method of forming a sheet-like air sac by integrating the sheet-like air sac with the horizontal sleeve 40b connected thereto. It may also be one that is manufactured manually. This method includes two folding steps of one piece of air sac material, and will be specifically described below with reference to FIG. 4E.

In this step of forming an air sac piece, as shown in FIGS. 4E(a) and (b), as in the case of forming the sheet-like air sac piece 61, a part of one air sac piece material 70a (part to be folded) 71c0 is folded to form a first folded portion 71c (FIGS. 4E(c) to (d)) to form an intermediate formed body 70b. Furthermore, a part of the first folded part 71c of this intermediate formed body 70b is folded to form a second folded part 71d, and then the second folded part is folded so that the cylindrical body part 42b2 is formed. 42b1 (the part that will become the fixed part) is welded (FIG. 4E(e) to (f)). Thereby, a sheet-like air bladder piece 71 to which the first cylindrical member 42b is fixed is formed. This sheet-like air bladder piece 71 includes a first cylindrical member 42b integrally as shown in FIG. 4E(g), and a second folded portion as shown in FIG. 4E(h). The horizontal load cable 40a can be inserted into the gap Sp of the unwelded portion 71d.

Next, a process of manufacturing the vertical sleeve 30b through which the vertical load cable 30a is passed will be described.

FIG. 9 is a diagram for explaining an example of a method for manufacturing a vertical sleeve 30b through which a vertical load cable 30a is passed, and FIG. 9(a) shows a state in which the vertical load cable 30a is arranged on a strip sheet 30 9(b) shows a state in which the belt-shaped sheet 30 is folded, and FIG. 9(c) shows a state in which the folded belt-shaped sheet 30 is thermally welded.

When producing the vertical sleeve 30b through which the vertical load cable 30a is passed, first, the vertical load cable 30a is placed on the strip sheet 30 along the longitudinal direction of the strip sheet 30, as shown in FIG. 9(a). At this time, the vertical load cable 30a is placed as close as possible to the central fold line X1 of the belt-shaped sheet 30. This is to minimize the influence of heat on the vertical load cable 30a in the subsequent heating process.

Next, as shown in FIG. 9(b), the strip sheet 30 is folded along the fold line X1 along its longitudinal direction so that the vertical load cable 30a is sandwiched between the strip sheets 30.

Subsequently, by heating and welding the portion where the folded strip sheets 30 are in contact with each other, that is, the region R4 where the vertical load cables 30a are not arranged, a plurality of vertical sheets through which the vertical load cables 30a are passed are heated and welded. A sleeve 30b is produced (see FIG. 9(c)).

After that, the horizontal sleeve 40b, the vertical sleeve 30b, and the vertical load cable 30a are integrated using the sheet-like air bladder piece 10 to which the manufactured horizontal sleeve 40b is attached and the plurality of vertical sleeves 30b through which the vertical load cable 30a is passed. An air sac 110 is prepared.

In FIG. 10, two sheet-like air bladder pieces 11 and 12 are joined at their respective arc-shaped side edges, and at the same time, a vertical load cable 30a is connected to the arc-shaped side edges of the two sheet-like air bladder pieces 11 and 12. It is a figure which shows the process of fixing the vertical sleeve 30b passed through. FIG. 11 is a perspective view for explaining the cross-sectional structure of the D portion in FIG. FIG. 11(b) shows a state in which the sheet-like air sac piece 12 is folded back after welding the two sheet-like air sac pieces 11 and 12 and the vertical sleeve 30b. show. In FIGS. 10 and 11, one of the two sheet-like air sac pieces 10 is referred to as a sheet-like air sac piece 11, and the other one is assumed to be a sheet-like air sac piece 12.

As shown in FIG. 10, the process of joining the side edges of the two sheet-like air bladder pieces 11 and 12 and the vertical sleeve 30b through which the vertical load cable 30a is passed is performed on all adjacent sheets constituting the air bladder 110. It is applied to the air sac piece 10.

Specifically, as shown in FIG. 11(a), the arc-shaped side edges of two sheet-like air sac pieces 11 and 12 are stacked so that their back surfaces face each other, and then one sheet-like air sac piece is A vertical sleeve 30b, through which a vertical load cable 30a is passed, is superimposed on the surface of the side edge of the vertical sleeve 30b.

Subsequently, the hatched area R5 in FIG. 11(a) (that is, the area where the vertical load cable 30a is not arranged) is heated to heat the side edges of the two sheet-like air bladder pieces 11 and 12 and the vertical sleeve 30b. The fixed pieces 30b1 (see FIG. 5(b)) are fixed together by welding.

Thereafter, as shown in FIG. 11(b), the lower sheet-like air sac piece 12 to which the vertical sleeve 30b is not fixed, of the two sheet-like air sac pieces, is folded back to form at least a portion of the air sac 110.

By applying such a welding process to all two adjacent sheet-like air bladder pieces that constitute the air bladder 110, the horizontal sleeve 40b, the vertical sleeve 30b, and the vertical load cable 30a are integrated. The air sac 110 is formed, and finally, the horizontal load cable 40a is passed through the horizontal sleeves 40b of the plurality of sheet-like air sac pieces 10 to complete the air sac 110.

Thereafter, a ring-shaped fixture 101 is attached to the air bladder zenith 100a of the air bladder 110, the upper ends 31 of the plurality of vertical load cables 30a are connected to the ring-shaped fixture 101, and the lower ends 32 of the plurality of vertical load cables 30a are connected to the ring-shaped fixture 101. It is connected to the horizontal load cable 40a between adjacent horizontal sleeves 40b, and is also connected to the rope upper end portion 30c1 of the corresponding connecting cable body 30c among the plurality of connecting cable bodies 30c. Here, the lower end portions of the plurality of connecting cable bodies 30c are connected to the load section 120.

In this way, the flying object 100 is completed.

As described above, the only way to attach the vertical load cable 30a to the air bag 110 is to pass the vertical load cable 30a through the vertical sleeve 30b, and then attach the vertical sleeve 30b and the vertical load cable 30a to the air bag 110 at the same time. Alternatively, there is another method in which the vertical load cable 30a is passed through the vertical sleeve 30b after the vertical sleeve 30b is attached to the air bladder 110.

When attaching the vertical load cable 30a using this method, it is necessary to attach the vertical sleeve 30b to the air bag 110 with the leading rope body 33 for pulling the vertical load cable 30a passed through the vertical sleeve 30b. , a method for manufacturing the vertical sleeve 30b through which the leading rope body 33 is passed will be explained. Note that as the leading rope body 33, for example, a cotton rope that has high heat resistance and does not melt under heat is used.

FIG. 12 is a perspective view for explaining an example of a method for producing a plurality of vertical sleeves 30b through which leading rope bodies 33 are passed, and FIG. FIG. 12(b) shows a state in which the belt-shaped sheet 30 is folded, and FIG. 12(c) shows a state in which the folded belt-shaped sheet 30 is thermally welded.

The method for manufacturing the vertical sleeve 30b through which the leading rope body 33 is passed is a method of manufacturing a plurality of vertical sleeves 30b through which the vertical load cable 30a is passed, as shown in FIGS. 12(a) to 12(c). , the vertical load cable 30a is replaced with a leading rope body 33. This leading rope body 33 has higher heat resistance than the vertical load cable 30a.

That is, in the method shown in FIG. 12, the leading rope body 33 is placed on the belt-shaped sheet 30 instead of the vertical load cable 30a (FIG. 12(a)), and the leading rope body 33 is placed on the belt-shaped sheet 30 so that the leading rope body 33 is sandwiched between the belt-shaped sheets 30. is folded along the crease X1 (FIG. 12(b)), and then the region (shaded region) R6 where the leading rope body 33 is not arranged in the folded strip sheet 30 is heated and welded to form the leading rope. A plurality of vertical sleeves 30b with bodies 33 threaded therethrough are made.

Furthermore, in the method of attaching the vertical sleeve 30b and the vertical load cable 30a to the air bladder 110 using the vertical sleeve 30b through which the leading rope body 33 is passed, the same steps as in the case of using the vertical sleeve 30b through which the vertical load cable 30a is passed, After welding the vertical sleeve 30b to the overlapping arcuate side edges of the adjacent sheet-like air bladder pieces 10, there is a step of pulling the vertical load cable 30a into the vertical sleeve 30b using the lead rope body 33.

FIG. 13 is a diagram for explaining an example of a method of attaching the vertical sleeve 30b and the vertical load cable 30a to the air bag 110 using a plurality of vertical sleeves 30b through which the leading rope body 33 is passed, and FIG. 13(a) 13(b) shows a state in which the vertical sleeve 30b is attached to the air bag 110, FIG. 13(b) shows a state in which the upper end of the vertical load cable 30a is connected to the lower end of the leading rope body 33, and FIG. The vertical load cable 30a is shown drawn into the sleeve 30b.

That is, when attaching the vertical sleeve 30b and the vertical load cable 30a to the air bladder 110 using the vertical sleeve 30b through which the leading rope body 33 is passed, first, the arc-shaped side edges of the adjacent sheet-like air bladder pieces 11 and 12 are At the same time as welding, the vertical sleeve 30b, through which the leading cable body 33 is passed, is welded to these side edges (FIG. 13(a)).

When the air bladder 110 is produced in this manner, a ring-shaped fixture 101 is attached to the air bladder zenith portion 100a of the air bladder 110.

Next, the lower end of the leading rope body 33 passed through the vertical sleeve 30b is connected to the upper end 31 of the vertical load cable 30a (FIG. 13(b)), and the leading rope body 33 is pulled out from the vertical sleeve 30b. The vertical load cable 30a connected to the cable body 33 is drawn into the vertical sleeve 30b (FIG. 13(c)).

Thereafter, the upper end 31 of the vertical load cable 30a is connected to the ring-shaped fixture 101 attached to the air bag crest 100 of the air bag 110, and the lower end 32 of the vertical load cable 30a is connected to the exposed portion of the horizontal load cable 40a. It is connected to the upper end of the connecting cable 30c, and further the lower end of the connecting cable 30c is connected to the load section 120. As a result, the flying object 100 is completed.

[Function of vertical load cable 30a and horizontal load cable 40a]
Next, the functions of the vertical load cable 30a passed through the vertical sleeve 30b and the horizontal load cable 40a passed through the horizontal sleeve 40b during flight of the flying object 100 will be described.

A vertical load cable 30a is movably inserted inside the vertical sleeve 30b fixed to the air bag 110, and the upper end of the vertical load cable 30a is connected to a ring-shaped fixture 101 attached to the zenith part 100a of the air bag 110. The lower end of the vertical load cable 30a is connected to the upper end of the connecting cable body 30c, and the lower end of the connecting cable body 30c is connected to the load section 120.

In this manner, in the flying object 100 of the first embodiment, the load portion 120 that is a load on the air bag 110 is supported by the vertical load cable 30a that is movably inserted into the vertical sleeve 30b fixed to the air bag 110. Therefore, even if there are variations in length among the plurality of vertical load cables 30a, there is no inclination in the posture of the load section 120, that is, there is no variation in tension among the plurality of vertical load cables 30a. In addition, the relative positional relationship between the vertical load cable 30a and the air sac 110 to which the vertical sleeve 30b is fixed can be changed, and as a result, the load of the load section 120 applied to the air sac 110 is evenly distributed. state can be easily realized.

Furthermore, in the flying object 100 of the first embodiment, even if an external force due to buoyancy or rising air current acts on the air bladder 110, the sheet-like member forming the air bladder 110 is suppressed from sliding up toward the zenith side of the air bladder 110. As a result, it is possible to reduce stress concentration on a specific portion of the air bladder 110, specifically, on a portion of the vertical sleeve 30b that becomes the exit of the vertical load cable 30a. Furthermore, due to the lifting of the envelope between adjacent vertical sleeves 30b, the radius of the air sac 110 becomes smaller, and the parachute effect of the air sac 110 functioning as a parachute when the flying object 100 falls (descends) is impaired. This will be explained in detail below.

FIG. 14 is a diagram showing the action of the horizontal load cable 40a, and FIG. 14(a) shows how an external force (white arrow) such as buoyancy or rising airflow acts on the air bladder 110 shown in FIG. 2(a). The figure shown in FIG. 14(b) is a diagram showing how the horizontal load tape 40a suppresses the lifting of the envelope of the air sac 110 due to buoyancy or rising air current (an enlarged view of part E in FIG. 14(a)). ).

In this flying object 100, a plurality of horizontal sleeves 40b are attached to the air bag 110 at predetermined intervals over the entire circumference of the air bag 110, and horizontal load cables 40a are passed through these horizontal sleeves 40b. It is joined to the lower end of the vertical load cable 30a between the horizontal sleeves 40b, and the lower end 32 of the vertical load cable 30a is connected to the load section 120 by a connecting rope 30c. Therefore, even if a force acts on the air bag 110 in a direction in which the sheet-like member constituting the air bag 110 slides up during flight, the envelope can be prevented from lifting up between the adjacent vertical load cables 30a.

This is because the lower end of the vertical load cable 30a is fixed to the load section 120 by the connecting rope 30c, and the horizontal load cable 40a is joined to the lower end of the vertical load cable 30a, so such a horizontal load cable 40a is inserted. This is because the horizontal sleeve 40b is restricted from moving upward by the horizontal load cable 40a.

Furthermore, since the horizontal sleeve 40b is located on the lower half side of the air bladder 110, in an air bladder that has a substantially spherical shape when inflated, the horizontal sleeve 40b located on the lower half side of the air bladder is smaller than the diameter of the air bladder. The horizontal sleeve 40b is located on the latitude line with a small diameter, so that it is difficult for the horizontal sleeve 40b to move upward, and it is possible to further suppress the bulb from slipping up.

Further, since the vertical load cable 30a, which carries the load of the load section 120, is movably passed through the inside of the vertical sleeve 30b fixed to the air bladder 110, a plurality of vertical load cables 30a provided throughout the air bladder 110 Even if the lengths of the load cables 30a vary, variations in tension between the plurality of vertical load cables 30a can be suppressed, thereby reducing bias in load distribution by the vertical load cables 30a. I can do it.

In other words, when the vertical load cable 30a is movably arranged within the vertical sleeve 30b fixed to the air bladder, even if the length of the vertical load cable 30a provided at each location of the air bladder is not adjusted correctly, During flight, the vertical load cables 30a move relative to the vertical sleeve 30b so that the tension on the plurality of vertical load cables 30a is uniform. Therefore, in order to eliminate the inclination of the load section 120 suspended from the air bladder 110, the length of the connecting rope (connection rope body) 30c connecting the other end of the second cable body and the load section is adjusted. , it is possible to easily realize a state in which the load applied to the air sac is evenly distributed.

As mentioned above, although the present invention has been illustrated using the preferred embodiment of the present invention, the present invention should not be interpreted as being limited to this embodiment. It is understood that the invention is to be construed in scope only by the claims. It will be understood that those skilled in the art will be able to implement the present invention to an equivalent extent based on the description of the present invention and common general technical knowledge from the description of the specific preferred embodiments of the present invention. It is understood that the documents cited herein are to be incorporated by reference into this specification to the same extent as if the documents themselves were specifically set forth herein.

The present invention is capable of suppressing the sheet-like member (so-called bulb) that constitutes the air sac from locally slipping up toward the top of the air sac even if an upward force is applied to the air sac. This is useful because it is possible to obtain a flying object that can reduce stress concentration at a specific location of the air sac, and a method for manufacturing such a flying object.

Further, the present invention is useful as a member for a flying object that can suppress the lifting of a bulb constituting an air sac used in such a flying object, and a method for manufacturing the same.

10, 61, 71 Air sac piece 10a Lower air sac piece 10b Upper air sac piece 10c Horizontal joint 10d Vertical joint 30 Band-shaped sheet 30a Vertical load cable (second cable body)
30b Vertical sleeve (second cylindrical member)
30b1 Sleeve fixing piece (vertical sleeve fixing piece)
30b2 Sleeve cylinder piece (vertical sleeve cylinder piece)
30c Connecting rope (connecting rope body)
30c1 Rope upper end 30d Connecting device 30d1 Ring-shaped connector 30d2 Wire fastener 31 Cable upper end 32 Cable lower end 32a Folded portion 32b Opposing portion 32c Loop portion 32d Suture thread 33 Leading rope 40a Horizontal load cable (first rope) )
40b, 41b, 42b horizontal sleeve (first cylindrical member)
40b1 Sleeve fixed part (horizontal sleeve fixed part)
40b2 Sleeve cylinder part (horizontal sleeve cylinder part)
41b0 Both ends of the horizontal sleeve 41b1, 42b1 Sleeve fixing part 41b2, 42b2 Sleeve cylindrical part 41b3 Sleeve opening part 50 Sheet material 60a Air sac piece material 61a Lower part of the air sac piece 61b Upper part of the air sac piece 61c Folding part 61c0 Folding target part 61c0
61c1 Lower part of the folding part 61c2 Upper part of the folding part 70a Air sac piece material 71a Lower part of the air sac piece 71b Upper part of the air sac piece 71c First folding part 71c0 Part to be folded 71c1 Lower part of the folding part 71c2 Folding upper part 71d second folding part 100 flying object 100a air bag zenith part 101 ring-shaped fixture 101a outer ring piece 101b inner ring piece 102 fixing buckle 103a fixing bolt 103b fixing nut 110 air bag (bag-like sheet body)
120 Load part 130 Connection member 140 Reinforcement member L Latitude line M Longitude line R1 to R6 area

Claims (29)

air sacs that generate buoyancy;
a first cylindrical member attached to the outside of the air bladder along the latitude of the air bladder;
A flying object, comprising: a first cable body passed through the inside of the first cylindrical member. The flying object according to claim 1, wherein the first cylindrical member is disposed on the lower half side of the air bladder. Claim: The first cylindrical member is formed with an aperture for taking out the first cord from inside the first cylindrical member, in addition to the apertures provided at both ends. 1. The flying object according to 1. The flying object according to claim 1, wherein the first cylindrical member has a thickness thicker at both ends thereof than at a portion other than the both ends. The flying object according to claim 1, wherein the first cylindrical member is thermally welded to the air bladder. The first cylindrical member includes a cylindrical body portion through which the first cable body passes, and a fixed portion fixed to the air bladder, and a boundary portion between the cylindrical body portion and the fixed portion is the fixed portion. The flying object according to claim 1, wherein the flying object is configured to be located below an end portion of the portion opposite to the boundary portion. The first cylindrical member includes a cylindrical body portion through which the first cable body passes, and a fixed portion fixed to the air bladder, and a boundary portion between the cylindrical body portion and the fixed portion is the fixed portion. The flying object according to claim 1, wherein the flying object is configured to be located above an end portion of the portion opposite to the boundary portion. comprising a load portion that applies a load to the air sac;
a second cylindrical member attached to the outside of the air bladder along the meridian from the top of the air bladder;
The flying object according to claim 1, further comprising: a second cable body passed inside the second cylindrical member. A plurality of the first cylindrical members are arranged at predetermined intervals along the latitude line,
The flying object according to claim 8, wherein the second cable body intersects with the first cable body between adjacent first cylindrical members arranged along the latitude line. The flying object according to claim 9, wherein the first cable and the second cable are joined at an intersection between the first cable and the second cable. The flying object according to claim 8, wherein the second cylindrical member is thermally welded to the air bladder. The flying object is
The flying object according to claim 1, further comprising a duct member attached to the inside of the air bag along a meridian from the top of the air bag for introducing gas into the inside of the air bag. The flying object is a gas balloon in which buoyancy is generated by filling the air bladder with gas having static buoyancy, or a hot air balloon in which buoyancy is generated by filling the air bladder with heated air. The flying object according to item 1. A method for manufacturing a flying object according to claim 1, comprising:
forming a plurality of sheet-like air sac pieces to which the first cylindrical member is fixed as a plurality of air sac pieces that are constituent members of the air sac;
and forming the air sac by sequentially joining the plurality of sheet-like air sac pieces. In the step of forming the air sac piece,
Manufacturing the flying object according to claim 14, wherein a sheet-like air bladder piece to which the first cylindrical member is fixed is formed by joining the lower part of the air sac piece and the upper part of the air sac piece together with the first cylindrical member. Method. In the step of forming the air sac piece,
A sheet-like air bladder in which the first cylindrical member is fixed by folding at least a portion of one air sac piece material to form a folded portion, and joining the first cylindrical member to the folded portion. The method for manufacturing a flying object according to claim 14, comprising forming a piece. In the step of forming the air sac piece,
folding at least a portion of one bladder piece material to form a first fold; folding at least a portion of the first fold to form a second fold; and then folding the first fold to form a second fold. 15. The flying device according to claim 14, wherein a sheet-like air sac piece to which the first cylindrical member is fixed is formed by welding at least a part of the second folded part so that a shaped part is formed. How the body is manufactured. 15. The flight according to claim 14, further comprising the step of, after forming the air bladder, passing the first cable through a plurality of first cylindrical members fixed to a plurality of air bladder pieces constituting the air bladder. How the body is manufactured. In the step of forming the air sac,
By overlapping two sheet-like air sac pieces of the plurality of sheet-like air sac pieces and thermally welding one side edge thereof, the two overlapped sheet-like air sac pieces of the plurality of sheet-like air sac pieces are The method for manufacturing a flying object according to claim 18, wherein the pieces are joined. In the step of forming the air sac,
A second cylindrical member extending along a predetermined meridian from the top of the air bladder is stacked on one side edge of the two stacked sheet-like air bladder pieces and thermally welded to form the air bladder,
20. The method for manufacturing a flying object according to claim 19, further comprising passing a second cable body to which a load is applied during flight inside the plurality of second cylindrical members attached to the air bladder. After passing the first cable body through the first cylindrical member and passing the second cable body through the second cylindrical member, the first cable body and the second cable body further comprising a joining step of joining at the intersection of the bichords,
In the joining step, the end of the second cable body is folded back into a loop shape so as to surround the first cable body, and the folded part and the folded part of the second cable body are bonded together. The method for manufacturing a flying object according to claim 20, wherein the overlapping portions are joined by stitching. A member used in the flying object according to claim 1,
a plurality of air sac pieces forming the air sac;
the first cylindrical member attached to each of the plurality of air bladder pieces;
The first cylindrical member is a flying object member configured to allow the first cable to pass therethrough. A member used in the flying object according to claim 8,
a plurality of air sac pieces forming the air sac;
the first cylindrical member attached to each of the plurality of air bladder pieces;
the second cylindrical member attached to each of the plurality of air bladder pieces;
a cord passed inside the second cylindrical member;
The first cylindrical member is configured to allow the first cable body to pass therethrough,
The first cylindrical member and the second cylindrical member include a heat-weldable material,
The cable body is a flying object member having higher heat resistance than the second cylindrical member. A method for manufacturing a flying object member according to claim 22, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces is formed by fixing side edges of a lower air sac piece and an upper air sac piece to an end of the first cylindrical member. A method for manufacturing a flying object member according to claim 22, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces is formed by folding at least a portion of one air sac piece material to form a folded part, and fixing an end of the first cylindrical member to the folded part. A method of manufacturing a member for a flying object. A method for manufacturing a flying object member according to claim 22, comprising:
an air sac piece forming step of forming an air sac piece to which the first cylindrical member is attached as a plurality of sheet-like air sac pieces for configuring the air sac;
In the air sac piece forming step,
Each of the plurality of air sac pieces includes folding at least a portion of one air sac piece material to form a first folded portion, and folding at least a portion of the first folded portion to form a second folded portion. A method for manufacturing a member for a flying object, the method comprising forming a part and welding at least a part of the second folded part so that a cylinder part is formed in the second folded part. . A method for manufacturing a flying object member according to claim 23, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
forming each of the plurality of air sac pieces by fixing side edges of a lower air sac piece and an upper air sac piece to an end of the first cylindrical member;
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object. A method for manufacturing a flying object member according to claim 23, comprising:
an air sac piece forming step of forming a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
Each of the plurality of air sac pieces is formed by folding at least a portion of one air sac piece material to form a folded part, and fixing an end of the first cylindrical member to the folded part. including the process of
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object. A method for manufacturing a flying object member according to claim 23, comprising:
an air sac piece forming step of forming a plurality of air sac pieces to which the first cylindrical member is attached as a plurality of sheet-like air sac pieces for configuring the air sac;
a member forming step of forming the second cylindrical member through which the cable body is passed;
The air sac piece forming step includes:
In each of the plurality of air sac pieces, at least a portion of one air sac piece material is folded to form a first folded part, and the first folded part is folded to further form a second folded part. and a step of forming the second folded part by welding so that a cylindrical part is formed in the second folded part,
The member forming step includes:
arranging the cord so as to be in contact with the strip member;
a step of folding the band-like member along a longitudinal direction so as to sandwich the cord;
In a state in which the cords are arranged within a first region of the folded belt-like member that does not exceed a predetermined distance from the fold line, the cords overlap in a second region of the belt-like member other than the first region. A method for producing a member for a flying object, the method comprising: fixing a part of the flying object.

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