JP2003301819A - Joint for structural member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint 1A for coupling columnar structural members 2A-2H to each other having a plurality of outer circumferential surfaces 10a-10f abuttable to coupling side end surfaces 20 of the structural members 2A-2H capable of easily coupling the structural members 2A-2H to each other, and forming correct coupling attitudes of them. <P>SOLUTION: In the outer circumferential surface 10a, a protruded part 13 is formed to be engaged with a recess 4 formed in the side surface of the structural member 2C opened in a coupling side end surface 20 when the outer circumferential surface 10a is abutted to the coupling side end surface 20. In the structural member 2C and the protruded part 13, screw holes 14, 42, and 43 communicated with each other in an engaged state to which a tightening screw 32 can be set are formed, respectively. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint of structural materials used for coupling columnar structural materials with each other, and relates to a technique for preventing rotation of the joint when the joint and the structural material are coupled.

[0002]

2. Description of the Related Art When a plurality of columnar structural materials are connected to each other to manufacture a storage shelf, a workbench, and an outer frame of various structures,
A prismatic joint is used which is arranged between the end faces of the two or three structural members on the coupling side and couples the structural members to each other in a predetermined coupling posture. As an example of such a joint, as shown in FIGS. 19 and 20, a cubic joint 1 that connects three pieces is known.

The joint 1 of this example is a cube made of aluminum and has six square outer peripheral surfaces 10a to 10f.
Is set to have the same shape as the end face 20 on the joining side of the aluminum mold members 2 and 2 which are structural members to be joined by this. Further, the joint 1 has a head 31 of a tightening screw 3 for connecting the aluminum mold member 2 and the joint 1 at the center of one outer peripheral surface 10a, 10c, 10e of the pair of outer peripheral surfaces facing each other. A large diameter hole 12 through which the screw portion 30 can be inserted is bored, and the other outer peripheral surfaces 10b, 10d, 10
A small diameter hole 11 through which only the screw portion 30 of the tightening screw 3 is inserted is formed in the central portion of f.

FIG. 20 and FIG. 21 show leg portions of a shutter guide rail which is manufactured by joining the aluminum mold members 2 and 2 using the joint 1. In order to stably arrange the guide rail, a disc-shaped leg member 9 is attached to the outer peripheral surface 10b located at the lower end of the joint 1.

As shown in FIG. 20, the aluminum mold members 2 and 2 have concave grooves 4 formed on their respective side surfaces along the longitudinal direction. The center and four corners of the square cross section along the longitudinal direction. Cylindrical hollow portions 21 and 41 are formed respectively. A screw groove that is screwed into the screw portion 30 of the tightening screw 3 is formed in the mouth portion 22 of the hollow portion 21 that opens to the coupling side end surface 20. A screw groove for screwing the leg member 9 is formed in the large diameter hole 12 of the outer peripheral surface 10b of the joint 1.

The joint 1 and the aluminum mold member 2,
2 means the outer peripheral surfaces 10b, 10d, 10f in which the small diameter holes 11 of the joint 1 are formed and the aluminum mold member 2
In the state of abutting so as to coincide with the coupling side end surface 20 of, the tightening screw 3 is inserted through the large diameter hole 12 of the outer peripheral surfaces 10a, 10c, 10e facing the outer peripheral surfaces 10b, 10d, 10f, It is coupled by screwing it into the mouth 22 of the hollow portion 21 which is open to the end face 20 on the coupling side. By this joining work, as shown in FIG.
The three aluminum profiles 2, 2 can be joined vertically to one another.

[0007]

However, in the joint 1 of this example, since the joint side end surface 20 of the aluminum mold member 2 only comes into surface contact with the outer peripheral surfaces 10b, 10d and 10f, the tightening screw 3 is When screwing, the joint 1 may rotate following the rotation of the tightening screw 3. Therefore, the coupling side end surface 2
There is a problem that it is difficult to position 0 and the outer peripheral surfaces 10b, 10d and 10f, and the joint 1 and the aluminum mold members 2 and 2 cannot be smoothly joined.

Further, the joint side end face 20 and the joint 1
If and are not coupled to each other in proper posture, the coupled postures of the coupled aluminum mold members 2 and 2 may be displaced, and as a result, the entire guide rail produced may be distorted.

The present invention has been made in view of the above circumstances, and is a "joint for connecting columnar structural members to each other, each of which is abutted against an end face on the connecting side of the structural member to be connected. In a joint of a columnar structural material having an outer peripheral surface ", it is an object to easily connect the structural material and the joint and to connect the structural materials with each other in an appropriate coupling posture.

[0010]

[Means for Solving the Problems] * 1 The technical means of the present invention for solving the above-mentioned problems is, "When the outer peripheral surface and the coupling side end surface are brought into contact with each other, A projecting portion that fits into the recess of the structural material is formed, and a tightening screw that is in communication with each other in the fitted state and that fixes the fitted state can be inserted into the structural material and the projecting portion. Different tightening holes are formed respectively, and a screw groove into which the tightening screw is screwed is formed in one tightening hole ”.

According to this, when the connecting side end surface of the structural material and the outer peripheral surface of the joint are brought into contact with each other, the projecting portion is fitted into the recess opening to the connecting side end surface of the structural material and the projecting portion and The tightening holes of the structural material are in communication with each other. Then, when a tightening screw is inserted into the tightening hole in the communicating state and tightened, the joint is fixed to the structural member. Thereby, when fixing the fitted state of the protrusion and the recess by the tightening screw,
Unlike the conventional example, the joint does not rotate following the rotation of the tightening screw. Further, by fitting the protruding portion and the recessed portion, it is possible to position the joint side end surface and the outer peripheral surface in an appropriate abutting posture.

* In the item 1 of paragraph 2, "the projecting portion is a columnar body that is formed so as to project vertically from the outer peripheral surface, and is fitted in a concave groove formed along the longitudinal direction on the side surface of the structural material. In that case, the protrusion is accommodated in a fitted state along the direction in which the groove extends,
The joint and the structural material are securely joined together and the joint strength is high. Further, since the projecting portion is configured to be fitted into the recessed groove formed in the structural material in advance, it does not take time and effort to form the recessed portion that fits with the projecting portion of the joint.

[0013] * In the item 3 and 2, "a quadrangular prism-shaped joint having six outer peripheral surfaces, at least one pair of outer peripheral surfaces facing each other having a large-diameter hole formed in the outer peripheral surface and the other The small diameter hole is formed on the outer peripheral surface, and the projecting portion is formed on one outer peripheral surface on which the large diameter hole is formed. ” The other outer peripheral surface thus formed is joined to the joining-side end surface by a tightening screw inserted through the large diameter hole, as in the conventional example. Further, one outer peripheral surface in which the large diameter hole is formed is coupled to the coupling side end surface by a tightening screw that fixes the fitting between the protrusion and the recess, as in the above-described item 1.

As described above, by installing the conventional connecting method together, for example, in the case where the large-diameter hole and the small-diameter hole are formed in three pairs of opposing outer peripheral surfaces, three large-diameter holes are formed. By forming the protrusion only on the outer peripheral surface,
Structural materials can be bonded to all six outer peripheral surfaces. As a result, the joint can be manufactured more easily and the cost required for manufacturing the joint is lower than in the case where the protrusions are formed on all the outer peripheral surfaces connecting the structural materials.

Item * 4 "The outer peripheral surface is formed with a protrusion that fits into a hole formed in the end surface of the connecting side of the structural member when the outer peripheral surface and the end surface of the connecting side are brought into contact with each other. The structural member and the protruding portion are formed with tightening holes that communicate with each other in the fitted state and into which a tightening screw for fixing the fitted state can be inserted. A screw groove into which the tightening screw is screwed is formed in the formed tightening hole ”. According to this, when the joint side end surface of the structural material and the outer peripheral surface of the joint are brought into contact with each other,
The protrusion is fitted into the hole, and the protrusion and the fastening hole formed in the structural member are in communication with each other. Then, the joint screw is fixed to the structural member by inserting a tightening screw through the tightening hole in the communicating state and tightening. Thereby, when fixing the fitting state of the protrusion and the hole with the tightening screw, unlike the conventional example, the joint does not rotate following the rotation of the tightening screw. . Therefore, it is easy to connect the joint and the structural material.

Further, by fitting the projecting portion and the hole or inserting the tightening screw, the end face on the coupling side and the outer peripheral surface can be positioned in a proper contacting posture. Therefore, the structural materials can be coupled to each other in an appropriate coupling attitude.

* In item 5 and 4, "the protrusion is a columnar body which is formed so as to vertically protrude from the outer peripheral surface, and the hollow portion formed along the longitudinal direction is formed at the center of the structural member. It is set so as to be fitted into the mouth portion on the side end face side ", in which the projecting portion is fitted into the mouth portion of a hollow portion previously formed in the center of the structural material. Therefore, it does not take time and effort to form a hole for fitting the protrusion.

* 6 In any one of items 1 to 5, the feature is that "it is a columnar body formed by laminating a plurality of plate-like members". According to this, since the plate-shaped member can be formed from a flat plate having a predetermined thickness by a relatively easy method such as punching or cutting, compared with the case where the joint is formed into a predetermined three-dimensional shape by shaving or the like. The joint is easy to manufacture and the cost of manufacturing the joint is low.

Further, by stocking a plurality of types of plate-shaped members having different positions, the number of formed protrusions, the inclination angle of the outer peripheral surface, etc., a plate-shaped member suitable for the number of connecting structural members and the connecting posture thereof. It is possible to easily manufacture a joint having a desired three-dimensional shape by combining and laminating.

[0020]

The present invention having the above-mentioned structure has the following unique effects. When the structural materials are coupled to each other using the joint of the present invention, the joint is prevented from rotating due to the fitting of the projecting portion of the joint and the concave portion of the structural material. Is easy to combine.

Further, since the joint side end surface and the outer peripheral surface can be positioned in a proper abutting posture by fitting the projecting portion and the concave portion, the structural members are joined in a proper joining posture. can do.

Further, according to the item (2), since the projecting portion is accommodated in the concave groove of the structural material in a fitted state, the joint and the structural material are securely coupled and the coupling strength is high. Also,
Since the projecting portion is configured to be fitted in the concave groove formed in the structural member in advance, it does not take time and effort to form the concave portion that fits with the projecting portion of the joint.

Further, according to the item (3), the joint can be manufactured because the protrusion can be formed only on the three outer peripheral surfaces in which the large diameter holes are formed by providing the conventional coupling method. It is easy and the cost of manufacturing the joint is low.

According to the item 4), the joint is prevented from rotating by fitting the projection and the hole or inserting the tightening screw. Easy to combine with structural materials.

Further, by fitting the protruding portion and the hole or inserting the tightening screw, the end surface on the coupling side and the outer peripheral surface can be positioned in a proper abutting posture. The structural materials can be coupled to each other in a proper coupling posture.

Further, according to the item (5), since the projecting portion is configured to be fitted into the mouth portion of the hollow portion formed in the center of the structural member in advance, the hole portion for fitting the projecting portion. There is no need to bother to form.

Further, according to the item (6), since a three-dimensional joint can be manufactured by laminating plate-like members that are easy to form, the manufacturing of the joint is easy and the cost for manufacturing the joint is low. Low. Further, by stocking a plurality of types of plate-shaped members in advance, it is possible to easily manufacture a desired three-dimensional joint by combining suitable plate-shaped members.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is a shutter openable / closable display stand manufactured by joining a plurality of structural aluminum materials 2A to 2H to each other by joints 1A and 1B which are an example of an embodiment of the present invention. Is shown.

In the display stand of this example, a shutter which can be opened and closed in the vertical direction is provided on the upper part of a display shelf board 70 for displaying products and the like, and the side surface portion and the rear surface portion of the shutter are provided. A transparent synthetic resin plate 7, 7 is attached to. Further, between the aluminum mold members 2H, 2H that support the four corners of the display shelf board 70 from below, metal thin plate panels 5, 5 are fitted respectively.

As shown in FIGS. 1 and 2, the shutter includes a pair of left and right inverted U-shaped guide rails and a shutter in which both end portions are slidably held in guide grooves 40 of the guide rails. And the opening / closing plate 6 for use with the prismatic joints 1A and 1B to form the aluminum profile 2
It is connected to A and 2B.

The guide rail has a structure in which linear aluminum shapes 2C, 2E, 2G and curved aluminum shapes 2D, 2F are alternately connected to each other so that the front part of the display stand can be largely opened. The aluminum mold member 2C located on the front surface side is joined to the joint 1A in a posture inclining rearward. The shutter opening / closing plate 6 is a rectangular plate 6 made of transparent synthetic resin.
0 and 60 are flexibly connected to each other by hinge members 61 and 61, and a handle 50 is attached to the lowermost plate 60.

As shown in FIG. 6, the thin plate panel 5 includes a hinge tube 5 made up of an aluminum-made rectangular plate 50, an inner tube 52 and an outer tube 53 having a C-shaped cross section.
It is configured to be flexibly connected by 1, and is held by the aluminum mold members 2A, 2B, 2H, 2H.

* Aluminum molds 2A to 2H Aluminum molds 2A to 2H used for the display stand of this example.
As shown in FIG. 2, H is a columnar body having a square cross section, and recessed grooves 4 and 4 are formed in the entire area on each side surface along the longitudinal direction. A pair of edge pieces protruding inward are formed at the open end edges of the groove 4.
Further, a hollow portion 21 having a cylindrical shape is formed along the longitudinal direction at the center of the square cross section, and hollow portions 41 are formed along the longitudinal direction at the four corners.

The mouth portion 2 of the end face 20 on the coupling side of the hollow portion 21.
2 is formed with a screw groove into which a tightening screw 3 for connecting the joints 1A, 1B and the aluminum mold members 2A to 2H is screwed. Here, in the aluminum mold members 2C to 2G forming the guide rails of the shutter, guide grooves 40 for slidably holding both end portions of the shutter opening / closing plate 6 are formed.

As shown in FIG. 5, the protrusion 1 is provided at the groove bottom of the concave groove 4 of each aluminum mold member 2A to 2H into which the protrusion 13 of the joint 1A, 1B described later is fitted.
A through hole that is a tightening hole on the side of the aluminum mold member 2 that communicates with a screw hole 14 that is a tightening hole on the third side and that inserts a tightening screw 32 that fixes the fitting state of the protruding portion 13 and the recessed groove 4. A hole 43 is formed. Also, the through hole 43
A through hole 42 for inserting and receiving the head 33 of the tightening screw 32 is formed in the groove bottom of the concave groove 4 or the guide groove 40 located on the back side of the concave groove 4 formed with. As a result, the head of the tightening screw 32 is housed in the hollow portion 21, so that the head of the tightening screw 32 projects to the groove bottom and the thin panel 5
And the shutter opening / closing plate 6 is prevented from traveling.

* Joints 1A, 1B As shown in FIG. 1, the joint of the structural material according to the present invention has a joint side end surface 2 of each aluminum mold material 2A to 2H.
The aluminum mold members 2A to 2H are arranged between 0 and 20 and are connected to each other in a predetermined connecting posture. In the display stand of this example, a joint 1A that joins the aluminum profile 2C of the guide rail in a rearwardly inclined state and three or four aluminum profiles 2A, 2B, 2G on the back surface or legs of the display stand. , 2H and two joints 1A and 1B for vertically coupling the two joints are used.

As shown in FIG. 3, the joint 1A has an end face 2 on the coupling side of the aluminum mold members 2A to 2H.
It is a prismatic body made of aluminum having six rectangular outer peripheral surfaces of the same shape or substantially the same shape as 0, and the aluminum profile 2
The outer peripheral surface 10a is formed so as to be inclined at an angle of about 15 degrees with respect to the opposing outer peripheral surface 10b when C is connected in an inclined posture, and the outer peripheral surface 10a is fitted into the concave groove 4 of the aluminum die member 2C. A protruding portion 13 is formed. Also,
The adjacent portion between the outer peripheral surface 10a and the outer peripheral surface 10e adjacent thereto is the outer peripheral surface 10a and the aluminum mold member 2C.
Is obliquely cut out so as to coincide with the end face 20 on the coupling side.

Further, like the joint 1 of the conventional example, one of the pair of outer peripheral surfaces facing each other has one outer peripheral surface 10.
A large diameter hole 12 through which the head portion 31 and the screw portion 30 of the tightening screw 3 can be inserted is bored in the central portion of a, 10c, 10e, and the central portion of the other outer peripheral surface 10b, 10d, 10f is Small diameter hole 1 through which only the screw part 30 of the tightening screw 3 is inserted
1 is provided.

As shown in FIGS. 2 and 3, the protruding portion 13 is a prismatic body which is formed so as to be continuous with the outer peripheral surface 10c and perpendicular to the outer peripheral surface 10a.
The size is set so that the aluminum mold members 2A to 2H can be accommodated in the concave grooves 4 and 4 in a concave-convex fitting state. Further, the projecting portion 13 is formed with a screw hole 14 in which a screw groove for screwing the tightening screw 32 is formed.

As shown in FIG. 6, the joint 1B is a cube made of aluminum having six square outer peripheral surfaces 10a to 10f which are the same as the joint side end surface 20, except that the outer peripheral surface 10a is inclined. That is, the protrusion 13, the large diameter hole 12, the small diameter hole 11 and the like have the same configuration as the joint 1A described above. Further, in the joints 1B arranged at the legs of the four corners of the display stand, as in the conventional example, screw grooves are formed in the large diameter holes 12 of the outer peripheral surface 10b for screwing the leg members 9 therein. There is.

* Joining method of joint and aluminum profile Next, four aluminum profiles 2 are attached to the joint 1A.
A method for binding A to 2C and 2H will be described. First, when the joint side end surface 20 of the aluminum mold member 2C is brought into contact with the outer peripheral surface 10a of the joint 1A, the projection 13 formed on the outer peripheral surface 10a and the concave groove 4 of the aluminum mold member 2C are fitted in a concavo-convex shape. Are in a rotation blocking state. Here, as shown in FIG. 5, from the guide groove 40 side of the aluminum mold member 2C, the through hole 42 of the guide groove 40, the through hole 43 of the concave groove 4, and the screw hole 14 are sequentially tightened by the tightening screw 32. Through and is lightly screwed to temporarily join the joint 1A and the aluminum mold member 2C.

Next, the outer peripheral surface 10d is brought into contact with the joining side end surface 20 of the aluminum mold member 2A so as to support the aluminum mold member 2C and prevent the joint 1A from rotating, while facing the outer peripheral surface 10d. The fastening screw 3 is inserted through the large-diameter hole 12 of the outer peripheral surface 10c to be coupled to the mouth 22 of the hollow portion 21. Similarly, the outer peripheral surface 10
f and the aluminum mold member 2B are bonded together. Next, the aluminum mold member 2C temporarily joined in advance is removed, and the tightening screw 3 is inserted through the large-diameter hole 12 of the outer peripheral face 10a to form a joint side end face of the outer peripheral face 10b and the aluminum mold member 2H. Combine with 20. Then, the outer peripheral surface 10a and the aluminum mold member 2C are again brought into contact with each other, and the tightening screw 32 is tightened to fix the fitted state of the protrusion 13 and the aluminum mold member 2C. This allows
As shown in FIG. 2, the four aluminum mold members 2A to 2C and 2H can be smoothly joined to the joint 1A.

When the three aluminum mold members 2A, 2B and 2H are to be joined to the joint 1B, the joint side end face 20 of the aluminum mold member 2H is joined to the outer peripheral surface 10a and then the same as the joint 1A described above. And the outer peripheral surfaces 10d and 10f and the aluminum mold members 2A and 2B.
Should be combined. The leg member 9 may be attached after the aluminum mold members 2A, 2B, 2H are combined, or may be attached to the joint 1B in advance before the combination.

As described above, the joints 1A, 1B
When the first aluminum mold members 2C and 2H are temporarily bonded to each other, the protrusion 13 and the recessed groove 4 of the aluminum mold member 2C are fitted to each other by projections and recesses so that the joining-side end surface 20 and the outer peripheral surface 10a are properly joined. The contact position can be set. Further, the joints 1A and 1B do not rotate following the rotation of the tightening screw 32. Therefore, by using the joints 1A and 1B, the aluminum mold members 2C and 2H can be easily coupled to an appropriate coupling posture.

Here, when the first aluminum mold member 2C is temporarily bonded or bonded to the joints 1A and 1B,
By supporting the aluminum mold members 2C and 2H, it is possible to prevent the joints 1A and 1B from rotating following the rotation of the tightening screw 3, so that the second and third aluminums to be joined by the conventional joining method. Mold materials 2A, 2B
Can be joined relatively smoothly.

Further, with the projecting portion 13 and the recessed groove 4 in a fitted state, the tightening screw 32 is inserted and the screw hole 1 is inserted.
Since the protrusion 13 and the aluminum mold member 2C can be temporarily joined only by lightly screwing the joint member 4 onto the joint 4, it is convenient when the joint 1A and the aluminum mold member 2C are temporarily joined and then removed as described above. .

In this example, the joint 1A,
Since the protruding portion 13 of 1B is accommodated in the concave grooves 4 and 4 formed in advance on the side surfaces of the aluminum mold members 2A to 2H in a concavo-convex fitting state, the joints 1A, 1B and the aluminum mold members 2C, 2H are joined together. Is reliable and the bond strength is high.

Further, the conventional method of coupling by means of the tightening screw 3 which inserts the pair of large-diameter holes 12 and the small-diameter hole 11, the projection 13 formed on the outer peripheral surface 10a and the aluminum mold member 2
Since the configuration is such that a coupling method by fitting with the concave grooves 4 of C and 2H is provided together, the protruding portion 1 formed on the outer peripheral surface 10a.
The number of 3 is small. Therefore, joints 1A, 1
B is easy to manufacture, and the cost for manufacturing the joint is low and economical. Further, in the conventional case, only a maximum of three aluminum mold members 2 can be bonded, but four aluminum mold members 2A, 2B, 2C, 2H can be bonded by forming the protrusion 13 on the outer peripheral surface 10a. It is like this.

* Other Embodiments (Embodiment 2) FIG. 7 shows a joint 1C having a structure in which a protrusion 13 is formed which fits into a hole formed in the end face 20 on the joining side of the aluminum mold member 2. Shows. Further, the aluminum mold member 2 in FIG. 8 has the same configuration as that used in the first embodiment except for the through hole 43.

The joint 1C of this example is an aluminum cube having six square outer peripheral surfaces 10a to 10e, which are the same as the joint side end surface 20 of the aluminum mold member 2, and four outer peripheral surfaces 10a, 10b, 10c and 10e. At the central portion of the columnar protrusions 13a, 13b, 13 which are fitted in the mouth 22 of the hollow portion 21 which is open to the end face 20 on the coupling side.
c and 13e are outer peripheral surfaces 10a, 10b and 10 respectively.
The protrusions are formed perpendicularly to c and 10e.

The protrusions 13a, 13b, 13c, 13
e is a mouth portion 22 of the hollow portion 21 of the aluminum mold member 2.
The size is set so that it can be housed in the state of FIG.
As shown in FIG. 4, in the internal fitting state, the aluminum mold member 2 communicates with a through hole 42 that is a tightening hole of the aluminum mold member 2 formed in the groove bottom of any one of the concave grooves 4, and the tightening is performed. A screw hole 14 for screwing the screw 32 is formed. The through hole 42 is set so as to penetrate from the groove bottom of the concave groove 4 to the hollow portion 21 and to accommodate the head 33 of the tightening screw 32. The screw portion 33 of the tightening screw 32 is set to have a length that can be accommodated in the screw hole 14.

Next, the case of joining the joint 1C and the aluminum mold member 2 will be described. For example, first, after fitting the protruding portion 13a into the mouth portion 22 of the hollow portion 21 of the aluminum mold member 2 to bring the outer peripheral surface 10a and the joint side end surface 20 into contact with each other, the through hole 42 and the screw hole are formed. The joint 1C and the aluminum mold member 2 can be joined by rotating the members 14 so that the members 14 communicate with each other to adjust the inner fitting state, and by inserting and tightening the tightening screw 32 from the through hole 42. .

Here, the joint 1C and the coupling side end surface 20 are rotatable relative to each other about the protrusion 13a as an axis, but are not rotatable in the inserting direction of the tightening screw 31, so that The joint 1C does not rotate following the rotation of the tightening screw 31. Other protrusion 1
With respect to 3b, 13c and 13e, the aluminum mold member 2 can be easily joined in the same manner as described above.

As described above, the protrusions 13a, 13
By inserting and fixing the tightening screw 32 in a state in which b, 13c, and 13e are fitted in the mouth portion 22, the joint 1C can be positioned in an appropriate contacting posture and the joint 1C is also prevented from rotating. As a result, the aluminum mold members 2 can be easily coupled to each other in an appropriate coupling posture by using the joint 1C.

Further, in this example, the protrusion 13
Since the a, 13b, 13c and 13e are configured to be fitted into the mouth 22 of the hollow portion 21 which is previously formed in the aluminum mold member 2, the protrusions 13a, 13b, 13c and 13e are purposefully provided to the aluminum mold member 2. It is not necessary to form a hole that can be fitted with.

(Third Embodiment) FIG. 9 shows a joint 1D capable of connecting eight aluminum mold members 2 and 2 to each other. Further, the aluminum mold member 2 of FIG. 10 has the same configuration as that used in the first embodiment except for the shape of the mouth 22 of the hollow portion 21.

The joint 1D of this example has six square outer peripheral surfaces 10c to 10h, which are the same as the connecting side end surface 20 of the aluminum mold member 2, and two regular hexagonal outer surfaces having the same diameter as one side of the connecting side end surface 20. It is a hexagonal column made of aluminum, which has a total of eight outer peripheral surfaces 10a to 10h including the surfaces 10a and 10b. Six outer peripheral surfaces 10c of the square
In 10h, as shown in FIG. 11, prismatic projections 13c to 1 that fit into the concave grooves 4 of the aluminum mold member 2 are provided.
3h is formed so as to vertically project, and two prismatic protrusions 13a and 13b that are fitted into the square tubular mouth portion 22 are vertically formed on the two regular hexagonal outer peripheral surfaces 10a and 10b. Is formed so as to project. Here, as shown in FIG. 10, the mouth portion 22 of the aluminum mold member 2 has a circular cross section from the cylindrical hollow portion 21 so that the prismatic protrusions 13a and 13b can be fitted therein. The protrusions 13a and 13b, which cannot be completely accommodated, are formed in a star-shaped cross section in which only the corners of the rectangular cross section are cut out.

The method of connecting the protrusions 13c to 13h and the aluminum mold member 2 is the same as that in the first embodiment, and the method of connecting the protrusions 13a and 13b to the aluminum mold member 2 is the same as that in the above-described embodiment. It is the same as the form 2.
With this structure, by using this joint 1D, as shown in FIG. 10, there are a total of 8 aluminum die members 2 on the same plane, 2 in the vertical direction, and 2 in the vertical direction.
Can be combined.

(Fourth Embodiment) FIG. 11 and FIG.
It shows a joint 1E composed of a plurality of plate-shaped members 16, 17, and 18. As shown in FIG. 11, the joint 1E of this example has three outer peripheral surfaces 10a of the same six squares formed by stacking and fixing three plate members 16, 17, 18 made of aluminum having the same square end surface.
The structure of the joint 1E is the same as that of the joint 1B in the first embodiment except for the screw hole 14 formed in the protrusion 13.

That is, each of the plate members 16, 17, 18
Has the same structure as the above-mentioned joint 1B cut into three along the edge, and is formed on each plate-shaped member 16, 17, 18 as shown in FIGS. 11 and 12. The stacked state is fixed by the setscrews 35, 35 inserted into the pair of screw holes 160, 170, 180. In addition, the plate-shaped member 1 located on the left and right of the joint 1E.
6 and 18 are set to have the same thickness as the prismatic protrusion 13 formed on the plate-shaped member 18, and the plate-shaped member 17 located at the center is formed from the left and right plate-shaped members 16 and 18. Is also thickly formed.

With the above-mentioned structure, the plate members 16, 17, 18 can be formed from an aluminum plate having a predetermined thickness by a relatively easy method such as punching or cutting. The protrusion 13 is easier to form and its shape is more stable than the case where the protrusion 13 is three-dimensionally cut and formed as in the joint 1B. Therefore, the joint 1E is easy to manufacture and The cost for manufacturing the joint 1E is also low.

Further, the position and the number of the protruding portions 13, the presence / absence of the large diameter holes 12 and the small diameter holes 11, and the outer peripheral surfaces 10a to 10f.
If a plurality of types of plate-shaped members 16, 17, 18 having different inclination angles of the end faces of the plate-shaped members 16, 17, 18 constituting the above are stocked, the location of the joint 1E and the aluminum mold members 2, 2 It is possible to easily manufacture a desired three-dimensional joint 1E by selecting and stacking the plate-shaped members 16, 17, and 18 having a shape suitable for the number of the connecting members and the connecting posture.

As shown in FIG. 13, the plate-shaped member 18 of this example includes a plate-shaped member 19 in which protrusions 13 and 13 are formed perpendicularly from each side of a square, and a plate-shaped member 3 indicated by a broken line 3 in the drawing.
It is formed by cutting one protrusion 13. As described above, the outer peripheral surfaces 10a and 10e of the joint 1E are stacked at the time of stacking.
The protrusions 13 are formed on all the side wall surfaces b, 10e, and 10f.
By stocking the plate-shaped member 19 on which is formed the unnecessary plate-shaped member 18 by cutting unnecessary protrusions 13 and 13 in accordance with the arrangement position and the number of aluminum mold members 2 and 2 to be joined. Since it can be easily formed, an extra stock is not held and the cost for manufacturing the joint 1E is low.

Further, in this example, as shown in FIG. 12, one end of the screw hole 14 of the projecting portion 13 is closed, so that when used in the same manner as the joint 1B of FIG. Since the tips of the screw hole 14 and the tightening screw 31 are not exposed to the front side, the aluminum mold member 2
The appearance of the joint between A, 2B and 2H and the joint 1E is good.

(Fifth Embodiment) FIG. 14 shows a joint 1F having a structure in which plate members 16, 17, and 18 having the same end face of an equilateral triangle are vertically stacked. As shown in FIG. 14, the joint 1F of this example has three plate-like members 16 made of aluminum having equilateral triangular end faces.
By laminating and fixing 17 and 18, a triangular prism having three square outer peripheral surfaces 10c to 10e and two equilateral triangular outer peripheral surfaces is formed. Outer peripheral surface 10a of the plate member 16 and side wall surfaces 17c to 1c of the plate member 17
7e is formed with a columnar protrusion 13a which is perpendicular to each surface and fits into the mouth 22 of the hollow portion 21 of the aluminum mold members 2 and 2, respectively. The protrusions 13a and 13c are formed. 13e to 13e are formed with screw holes 14 into which the tightening screws 32 are screwed, as in the third embodiment. In addition, each of the plate-shaped members 16, 17, 18
Are fixed in a stacked state by the set screws 35, 35 that pass through the pair of screw holes 160, 170, 180.

As described above, the plate members 16, 17,
As long as 18 has a common end face shape (in this example, a regular triangle portion) that can be stacked on each other, even if the protruding portion 13a is formed protruding from the outer peripheral surface 10a, The shapes of the portions 13a and 13c to 13e may be cylindrical.

(Embodiment 6) FIGS. 15 and 16 show
End face 20 on the joining side of the aluminum mold members 2A, 2B to be joined
It shows a joint 1G having smaller outer peripheral surfaces 10c-10f. Also, the aluminum profile 2 of FIG.
A and 2B have the same configuration as that used in the first embodiment described above.

As shown in FIG. 15, the joint 1G of this example is a plate-shaped columnar body made of aluminum having a square end surface, and has two square outer peripheral surfaces 10a and 10b which are the same as the connecting side end surface 20. , The aluminum profile 2
It is composed of four vertically long rectangular outer peripheral surfaces 10c to 10e having the same width as the depth of the concave groove 4 of A and 2B,
An insertion hole 15 is formed in the central portion of the outer peripheral surface 10a for inserting a tightening screw 36 for connecting the joint 1G to the connecting side end surface 20 of the aluminum mold member 2A.

The method of connecting the protrusions 13c to 13f and the aluminum mold 2B is the same as in the first embodiment.
Is the same as. As shown in FIG. 16, the protrusion 1
Aluminum profiles 2B joined by 3c to 13f
The end surface 20 on the connecting side is joined in a manner of abutting on the side surface of the aluminum mold member 2A joined by the tightening screw 35. Therefore, first, the protrusions 13c to 13f are formed.
When at least one aluminum mold member 2B is joined by fitting the groove groove 4 with the groove 4 and then the aluminum mold member 2A is joined by the tightening screw 35, the joint side end surface 20 of the previously joined aluminum mold member 2B is connected to the joint 1
Since it functions as a rotation preventing and positioning means for G, the joint 1G can be smoothly connected in an appropriate connecting posture.

In this example, similar to the plate-like members 16, 17, 18 shown in the fourth embodiment, an aluminum plate having a predetermined thickness is punched or cut by a relatively easy method. Since the joint 1G can be manufactured, the manufacturing of the joint 1G is easy and the manufacturing cost is low. Also, in this example, the four outer peripheral surfaces 10
Since the components c to 10e are brought into contact with only a part of the joint side end surface 20 rather than the entire region, the joint 1G itself has a small volume and is compact as compared with the other embodiments described above.

(Embodiment 7) FIGS. 17 and 18 show
The joint 1H for connecting the curved aluminum mold members 2 and 2 is shown. Further, the aluminum mold member 2 in FIG. 18 has the same configuration as that used in the above-described first embodiment except that it is curved in an arc shape.

In this example, as shown in FIG. 17, two fan-shaped outer peripheral surfaces 10a and 10b curved along the shape of the aluminum mold members 2 and 2 to be joined and the end face of the aluminum mold member 2 on the joining side. The same two square outer peripheral surfaces 10c and 10e and a rectangular outer peripheral surface 10 that is curved to continuously connect the aluminum mold members 2 and 2 to each other.
It is a columnar body composed of e and 10f.

On the outer peripheral surfaces 10a and 10b, there are cylindrical protrusions 13a which are perpendicular to the respective outer peripheral surfaces 10a and 10b and which are fitted into the openings 22 of the hollow portions 21 of the aluminum mold members 2 and 2. , 13b are formed respectively, and the projecting portions 13a, 13c to 13e are formed with screw holes 14 into which the tightening screws 32 are screwed, as in the third embodiment. In addition, the outer peripheral surface 10c,
10 d is formed so as to be continuous with the outer peripheral surface 10 e in the form of prismatic projections 13 c and 13 d that are curved similarly to the groove 4 so that they can be fitted into the groove 4 of the aluminum mold members 2 and 2. The tightening screw 32 is attached to the protrusions 13c and 13d as in the first embodiment.
A screw hole 14 for screwing is formed through.

The method of connecting the protrusions 13c and 13d to the aluminum mold member 2 is the same as in the first embodiment, and the method of connecting the protrusions 13a and 13b to the aluminum mold member 2 is the same as described above. This is the same as the second embodiment. With such a configuration, as shown in FIG. 18, the joint 1H can be arranged between the curved aluminum mold members 2 and 2 to be continuously coupled, and the joint 1H can be arranged. The aluminum mold members 2 and 2 which support the curved aluminum mold members 2 and 2 in a position can be combined vertically.

* Others The joint of the present invention is not limited to the structure of the first to seventh embodiments described above. In the example above,
Although the number of protrusions 13 formed on one outer peripheral surface 10a to 10h is one, one outer peripheral surface 10a to
A plurality of protrusions 13 may be formed on 10f. For example, a second protrusion may be formed at a position facing the protrusion 13 shown in FIG. 3 through the large diameter hole 12. With such a configuration, the aluminum mold 2C is sandwiched by the pair of protrusions 13 and 13 fitted in the concave grooves 4 and 4 facing each other, so that the aluminum mold 2C and the joint 2C are jointed. 1A
The bond strength with Further, the shape of the projecting portion 13 is not limited to the above-mentioned shape such as a square pole or a cylinder, and may be another polygonal pillar, a cone, a pyramid, or a hemisphere.

In the above-mentioned example, in the cubic joints 1A and 1B of the first embodiment only, the large-diameter holes 12 and the small-diameter holes 11 of the outer peripheral surfaces 10a to 10f and the tightening screw 3 which are the conventional joining methods are used. Although the joint method according to the above is used together, the joint method of other shapes such as the hexagonal columnar joint 1D of the third embodiment and the triangular columnar joint 1F of the fifth embodiment is combined with the conventional coupling method. Good. Further, the large-diameter hole 12 and the small-diameter hole 11 do not have to be formed on all of the pair of facing outer peripheral surfaces 10a to 10f as in the first embodiment. For example, in the third and fifth embodiments, , The large-diameter hole 12 and the small-diameter hole 1 only on the pair of upper and lower outer peripheral surfaces 10a, 10b.
1 may be formed respectively.

[Brief description of drawings]

FIG. 1 is a perspective view showing an exhibition stand manufactured by using a joint according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a joint between a joint and an aluminum mold member.

FIG. 3 is a perspective view showing a joint according to the embodiment of the present invention.

FIG. 4 is a side sectional view showing a joined state of a joint and an aluminum mold member.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a perspective view showing a joint between a joint and an aluminum mold member.

FIG. 7 is a perspective view showing another joint (Embodiment 2) of the embodiment of the invention.

FIG. 8 is a cross-sectional view showing a joint state of the joint and the aluminum die member of FIG.

FIG. 9 is a perspective view showing another joint (Embodiment 3) of the embodiment of the invention.

FIG. 10 is a cross-sectional view showing a joint state of the joint and the aluminum mold member of FIG.

FIG. 11 is an exploded perspective view showing another joint (Embodiment 4) of the embodiment of the invention.

12 is a sectional view taken along line CC of the joint shown in FIG.

13 is a plan view showing a plate-like member that constitutes the joint of FIG. 11. FIG.

FIG. 14 is an exploded perspective view showing another joint (embodiment 5) of the embodiment of the invention.

FIG. 15 is an exploded perspective view showing another combined state of the joint (Embodiment 6) and the aluminum mold member according to the embodiment of the present invention.

16 is a cross-sectional view showing a combined state of the joint of FIG. 15 and an aluminum mold member.

FIG. 17 is a perspective view showing another joint (Embodiment 7) of the embodiment of the present invention.

FIG. 18 is a perspective view showing a combined state of the joint of FIG. 17 and an aluminum mold member.

FIG. 19 is a perspective view showing a conventional joint.

FIG. 20 is a perspective view showing a joint between a conventional joint and an aluminum mold member.

21 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

(1) (1A) (1B) (1C) (1D) (1E) (1F) (1G) (1H) ・ ・ ・ Joints (10a) (10b) (10c) (10d) (10e) (10f) ( 10g) (10h) ・ ・ ・ Outer peripheral surface (11) ・ ・ ・ Small diameter hole (12) ・ ・ ・ Large diameter hole (13) (13a) (13b) (13c) (13d) (13e) (13f) (13g ) (13h) ・ ・ ・ Projection part (14) ・ ・ ・ Screw hole (16) (17) (18) (19) ・ ・ ・ Plate shaped member (2) (2A) (2B) (2C) (2D) (2E) (2F) (2G) (2H) ・ ・ ・ Aluminum mold (20) ・ ・ ・ End face (21) on coupling side ・ ・ ・ Hollow part (22) ・ ・ ・ Mouth part (3) (32) (36 ) ... Tightening screw (4) ... Concave groove (5) ... Thin plate panel (6) ... Open / close plate for shutter

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2E125 AA02 AA12 AB15 AC15 AC19                       AG20 BB16 BB18 BC01 BC06                       BC07 BD01 BF03 CA02 CA14                       EA01                 3J039 AA01 AA06 BB02 GA02 GA03                       GA05

Claims (6)

[Claims] 1. A joint for connecting columnar structural members, each of which has a concave portion opened to the end face on the connecting side, formed on the side surface, and a plurality of outer peripheries that individually contact the end faces on the connecting side of the structural members to be connected. In a joint of a columnar structural material having a surface, the outer peripheral surface is formed with a protrusion that fits into the concave portion of the structural material when the outer peripheral surface and the coupling side end surface are brought into contact with each other. The structural member and the projecting portion each have a tightening hole that communicates with each other in a fitted state and into which a tightening screw for fixing the fitted state can be inserted. Is a joint of structural materials, wherein a screw groove into which the tightening screw is screwed is formed. 2. The joint of the structural material according to claim 1, wherein the protruding portion is a columnar body that is formed to vertically project from the outer peripheral surface, and is formed on a side surface of the structural material along a longitudinal direction. A joint for a structural material, characterized in that it is set so as to fit in a concave groove. 3. The joint of the structural member according to claim 2, wherein the joint is a quadrangular prism having six outer peripheral surfaces, and a large diameter hole is formed in at least one outer peripheral surface of at least one pair of outer peripheral surfaces facing each other. A structural material, characterized in that it is provided with a small diameter hole on the other outer peripheral surface, and the projecting portion is formed on one outer peripheral surface with the large diameter hole formed. Joint. 4. A joint for joining columnar structural materials, wherein the columnar structural material joint has a plurality of outer peripheral surfaces respectively abutting on the joint side end faces of the structural materials to be joined. The surface is formed with a protrusion that fits into a hole formed in the joint-side end surface of the structural material when the outer peripheral surface and the joint-side end surface are brought into contact with each other. Each has a tightening hole that is in communication with each other in the fitted state and into which a tightening screw for fixing the fitted state can be inserted. A joint for a structural material, wherein a screw groove into which a tightening screw is screwed is formed. 5. The joint of the structural material according to claim 4, wherein the projecting portion is a columnar body that is formed so as to vertically project from the outer peripheral surface, and is formed along the longitudinal direction at the center of the structural material. A joint for a structural material, which is set so as to be fitted in a mouth portion of the hollow portion on the side of the coupling side end face. 6. The joint of structural materials according to claim 1, wherein the joint is a columnar body formed by stacking a plurality of plate-shaped members.