KR200496282Y1 - Elastic launching apparatus - Google Patents

Abstract

The present invention relates to an elastic launch device, comprising: a housing having a space inside the body; a firing unit that stores confetti; A first rubber band for firing the firing part; And a fixing part separable from the housing, a first fixing hole is provided on an outer surface of the housing, and one outer surface of the housing is formed by extending into the space and folding, a pair of A support portion having a first hole of is provided, a second fixing hole is provided in the launching unit, a pair of second holes are provided at the lower end of the launching unit, and the first elastic band is provided with the pair of first holes. A hole and the pair of second holes are connected, and when the launching unit is accommodated in the housing, the first rubber band is stretched, and the launching unit is in a state where the first rubber band is stretched, and the fixing unit fixes the first fixing unit. As it is fitted into the hole and the second fixing hole, it is fixed in a state accommodated inside the housing, and the launching part, when the fixing part is separated from the housing, the upper surface of the housing according to the elasticity of the first rubber band. It is configured to spray the confetti while protruding into.

Description

Elastic launch device {ELASTIC LAUNCHING APPARATUS}

The present invention relates to an elastic launch device, and more particularly, to an elastic launch device used as a card or accessory used in a celebration or commemorative event.

Elastic launch devices can be generally used to heighten the atmosphere of a scene at an event such as a celebration or parade. The launch unit that is fired can store various items such as confetti, commonly called confetti or pollen, congratulatory messages, letters, cash, photos, and the like.

On the other hand, most launch devices use the power of compressed fluid to launch items stored inside the device. In general, compressed air is stored inside the device, and when used, the compressed air is ejected and the item is fired with that power. It is used in a way that fires. However, these devices have a problem in that air compression is weakened when stored for a long time or defective products are frequently generated due to the durability of the device.

Korean Patent Registration No. 10-1176973

An object of the present invention is to provide a device that launches an item without using a compressed fluid.

An elastic launch device according to an embodiment of the present invention includes a housing having a space inside the body; a firing unit that stores confetti; A first rubber band for firing the firing part; And a fixing part separable from the housing, a first fixing hole is provided on an outer surface of the housing, and one outer surface of the housing is formed by extending into the space and folding, a pair of A support portion having a first hole of is provided, a second fixing hole is provided in the launching unit, a pair of second holes are provided at the lower end of the launching unit, and the first elastic band is provided with the pair of first holes. A hole and the pair of second holes are connected, and when the launching unit is accommodated in the housing, the first rubber band is stretched, and the launching unit is in a state where the first rubber band is stretched, and the fixing unit fixes the first fixing unit. As it is fitted into the hole and the second fixing hole, it is fixed in a state accommodated inside the housing, and the launching part, when the fixing part is separated from the housing, the upper surface of the housing according to the elasticity of the first rubber band. It is configured to spray the confetti while protruding into.

Embodiments of the disclosed design may have effects including the following advantages. However, this does not mean that the disclosed embodiments of the invention should include all of them, so the scope of the disclosed invention should not be construed as being limited thereby.

Since the elastic firing device according to an embodiment of the disclosed device fires the firing unit using the elasticity of the rubber band without gunpowder, it can be used indoors and safely, so that even children can use it. In addition, there is an effect of occupying a small volume because a separate fluid pressure means is not used. In addition, there is an advantage in that performance does not significantly deteriorate even when stored or reused for a long time.

In the elastic launch device according to an embodiment of the disclosed design, since the fixing part is separable from the housing, even if the fixing part is damaged or lost, the existing housing can be continuously used by using the new fixing part.

The elastic launching device according to an embodiment of the disclosed device includes a first and second locking parts that brake the launcher when the launcher is launched, so that the confetti can be strongly jetted by the force that brakes the launcher. .

Since the elastic launch device according to an embodiment of the disclosed design includes at least one extension extending outside the width of the housing when the launch unit protrudes from the upper surface of the housing, as long as the extension can be accommodated inside the housing, the width of the housing Various elements can be expressed without restriction. In addition, a visual effect in which the expansion unit is deployed may generate a synergistic effect with a visual effect in which the launch unit protrudes, thereby amplifying the aesthetic feeling provided to the user.

The launching unit of the elastic launch device according to an embodiment of the disclosed device includes an envelope between two overlapping surfaces, and further includes a guide sheet located in the bag and extending over the upper surface of the housing, so that the user can insert the guide sheet into the bag according to the position of the guide sheet. It has the effect of being able to easily insert desired items.

In the elastic launching device according to an embodiment of the disclosed design, the area at the bottom of the second fixing hole of the launching unit is exposed to the outside of the housing through the first fixing hole in a state where the launching unit protrudes to the upper surface of the housing. Since it is configured to have different colors, when reusing the elastic firing device, the user can easily determine how much lower the firing part should be moved to match the positions of the first fixing hole and the second fixing hole.

1 is a view showing the external shape of an elastic launch device according to the present invention.
2A shows an exemplary exploded view of a housing of an elastic launch device according to the present invention.
2B shows an exemplary exploded view of a housing of an elastic launch device according to the present invention.
3A shows an exemplary development view of a launching unit of an elastic launching device according to the present invention.
Figures 3b and 3c show the action of the first engaging portion and the second engaging portion of the elastic firing device according to the present invention.
4 is a view showing the internal structure of the elastic launch device according to the present invention in a state where the launch unit is housed in the housing.
5 is a view showing the appearance of the elastic launching device according to the present invention in a state where the launching unit is accommodated inside the housing.
6 is a view showing a fixing part of an elastic firing device according to the present invention.
7 is a view showing that the launching unit protrudes from the upper surface of the housing in the elastic launching device according to the present invention.
8 is a view showing a state in which the launching unit protrudes from the upper surface of the housing in the elastic launching device including the expansion unit according to the present invention.
9 is a view showing a state in which the launch unit is accommodated in the housing in the elastic launch device including an extension unit according to the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first, second, A, B, etc. may be used to describe various elements, but the elements are not limited by the above terms, and are merely used to distinguish one element from another. used only as For example, without departing from the scope of the present invention, a first element may be termed a second element, and similarly, a second element may also be termed a first element. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

In the terms used herein, singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise. And the term "includes" means that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or number, step, operation component, or part. or the possibility of the presence or addition of combinations thereof.

Prior to a detailed description of the drawings, it is to be clarified that the classification of components in the present specification is merely a classification for each main function in charge of each component. That is, two or more components to be described below may be combined into one component, or one component may be divided into two or more for each more subdivided function.

In addition, each component to be described below may additionally perform some or all of the functions of other components in addition to its main function, and some of the main functions of each component may be performed by other components. Of course, it may be dedicated and performed by . Therefore, the existence or nonexistence of each component described through this specification should be interpreted functionally.

1 is a view showing the external shape of an elastic launch device according to the present invention. Referring to FIG. 1 , the elastic launch device includes a housing 110 , a first fixing hole 120 , and a launch unit 200 .

The elastic launching device according to the present invention solves the problems of the conventional spraying device using fluid pressure and can be used more conveniently, and is a device that launches an item using elasticity of a rubber band instead of fluid pressure. For a simple structure, the entire construction of the launch device may be formed of synthetic resin-coated paper. Synthetic resin is used for the purpose of preventing paper from getting wet or contaminated, and may be sprayed and coated on the surface of paper or coated by attaching a film. In addition to this, a specific material may be coated to maintain durability when the launch device is reused.

The shape of the housing is not limited as long as a space is formed inside the body so that the launcher can be accommodated and the upper surface is open so that the launcher can protrude out of the housing. For example, as shown in FIG. 1 , the housing may have an envelope shape. Of course, unlike the example shown in FIG. 1 , the housing may be manufactured in a shape such as a polyhedron having a different shape such as a hexahedron or an octahedron, or a shape such as a sphere.

The launching unit may store various items therein or display a message. According to various embodiments, the launch unit may have a structure in which two surfaces are overlapped. According to various embodiments, the firing unit may include an envelope (not shown) positioned between two overlapping surfaces and having an open upper surface. According to various embodiments, the firing unit may further include a guide sheet (not shown) located within the envelope and extending over the upper surface of the housing. The user can store items such as letters, photos, and cash in the envelope according to the location of the guide. According to various embodiments, the launch unit may store confetti between the two overlapping surfaces, and the confetti may be ejected by elasticity when the launch unit protrudes. In other various embodiments, the firing unit may not store confetti therein.

2A shows an exemplary exploded view of a housing of an elastic launch device according to the present invention. In FIG. 2A , the blue line represents the outline and the incision line, and the red line represents the line to be folded.

Referring to FIG. 2A , the housing first surface 140 and the housing second surface 145 are surfaces exposed to the outside. The first surface 140 of the housing includes a first fixing hole. The elastic launch device may include a support 130 formed by extending and folding the first surface 140 of the housing into the housing space. The support part 130 may be positioned between the housing first surface 140 and the housing second surface 145 . The support part 130 may include first holes 150 and 160 for connecting the first rubber band.

The elastic launch device may further include a first hooking part 135 formed by extending the support part 130 and folding it into the housing space. The first locking part 135 is configured to brake the launching part protruding from the upper surface of the housing after the fixing part is separated from the housing. The operation of the first hooking part 135 will be described later with reference to FIGS. 3B and 3C.

According to various embodiments, the support part 130 may be attached to the first adhesive part 146 and fixed to the second surface 145 of the housing. According to various embodiments, the support part 130 may be attached to at least a partial region of the second surface 145 of the housing in addition to the first adhesive part 146 to serve as an inner surface of the second surface 145 of the housing.

The first adhesive portion 146 and the second adhesive portion 147 are portions where an adhesive is used to fix the housing shape, and the locations of the first adhesive portion 146 and the second adhesive portion 147 are different from those shown in FIG. 2A. It will be appreciated by those skilled in the art that many variations are possible.

2B shows an exemplary exploded view of a housing of an elastic launch device according to the present invention. In FIG. 2B , the blue line represents the outline and the incision line, and the red line represents the line to be folded.

Referring to FIG. 2B , the housing first surface 140 and the housing second surface 145 are exposed to the outside. The first surface 140 of the housing includes a first fixing hole. The elastic launch device may include a support 130 formed by extending and folding the second surface 145 of the housing into the housing space. The support part 130 may be located inside the space between the housing first surface 140 and the housing second surface 145 . The support part 130 may include first holes 150 and 160 for connecting the first rubber band.

The elastic launch device may further include a first hooking portion 135 formed by extending and folding the first surface 140 of the housing into the housing space. The first locking part 135 is configured to brake the launching part protruding from the upper surface of the housing after the fixing part is separated from the housing. The operation of the first hooking part 135 will be described later with reference to FIGS. 3B and 3C.

According to various embodiments, the support part 130 may be attached to at least a partial region of the second surface 145 of the housing in addition to the first adhesive part 146 to serve as an inner surface of the second surface 145 of the housing.

The first adhesive portion 146 and the second adhesive portion 147 are portions where an adhesive is used to fix the housing shape, and the locations of the first adhesive portion 146 and the second adhesive portion 147 are different from those shown in FIG. 2B. It will be appreciated by those skilled in the art that many variations are possible.

3A shows an exemplary development view of a launching unit of an elastic launching device according to the present invention. In FIG. 3A , blue lines represent outlines and incision lines, and red lines represent lines to be folded.

Referring to FIG. 3A , the launch unit may have a structure in which a first surface 201 and a second surface 202 of the launch unit overlap. When the first surface 201 and the second surface 202 of the firing part overlap, the hole 211 and the hole 212 overlap to form one 210 of a pair of second holes, and the hole ( 221) and the hole 222 may overlap to form the other one 220 of the pair of second holes. The second surface 202 of the launching part may include a second fixing hole 240 . By cutting the lower end of the first surface 201 of the launching part, the second hooking part 203 may be formed. The second hooking part 203 is configured to brake the launching part protruding from the upper surface of the housing after the fixing part is separated from the housing. The operation of the second hooking part 203 will be described later with reference to FIGS. 3B and 3C.

Figures 3b and 3c show the action of the first engaging portion and the second engaging portion of the elastic firing device according to the present invention.

Fig. 3b shows the action of the first and second engaging parts of the elastic launch device in which the housing of Fig. 2a and the firing part shown in Fig. 3a are used. As described above with reference to FIG. 2A , the first hooking portion 135 extends from the support portion 130 and is folded into the housing. As described above in FIG. 3A, the second hooking part 203 formed by cutting the lower end of the first surface 201 of the launching unit overlaps the first surface 201 and the second surface 202 of the launching unit. It is integrally connected with the formed launching part. As will be described later, when the fixing part 300 is separated from the housing, the launching part protrudes from the upper surface of the housing. The launching unit continues to move upward until the second hooking part 203 is hooked on the first hooking part 135, and then the second hooking part 203 is hooked on the first hooking part 135 and no longer moves upward. It cannot move and stops moving. In other words, the first catching part 135 and the second catching part 203 can brake the launching unit protruding from the upper surface of the housing when the second catching part 203 is caught on the first catching part 135 .

Fig. 3c shows the action of the first and second hooking parts of the elastic launch device in which the housing of Fig. 2b and the firing part shown in Fig. 3a are used. As described above with reference to FIG. 2B , the first hooking portion 135 extends from the first surface 140 of the housing and is folded into the housing. As described above in FIG. 3A, the second hooking part 203 formed by cutting the lower end of the first surface 201 of the launching unit overlaps the first surface 201 and the second surface 202 of the launching unit. It is integrally connected with the formed launching part. As will be described later, when the fixing part 300 is separated from the housing, the launching part protrudes from the upper surface of the housing. The launching unit continues to move upward until the second hooking part 203 is hooked on the first hooking part 135, and then the second hooking part 203 is hooked on the first hooking part 135 and no longer moves upward. It cannot move and stops moving. In other words, the first catching part 135 and the second catching part 203 can brake the launching unit protruding from the upper surface of the housing when the second catching part 203 is caught on the first catching part 135 .

4 is a view showing the internal structure of the elastic launch device according to the present invention in a state where the launch unit is housed in the housing. Referring to FIG. 4 , the launch unit 200 may include a second fixing hole 240 and a pair of second holes 210 and 220 .

The first rubber band 230 connects the pair of first holes 150 and 160 and the pair of second holes 210 and 220 shown in FIG. 2, and as shown in FIG. 6, the launch portion of the housing It may have the shortest length in a state protruding to the upper surface. In this specification, the rubber band connecting a specific first hole and a specific second hole means that the rubber band forms a closed loop passing through the first hole and the second hole, or the rubber band with open ends connects the first hole and the second hole. means passing through

As shown in FIG. 4 , the first rubber band may be stretched when the launch unit is accommodated in the housing. 5 is a view showing the appearance of an elastic launch device according to various embodiments of the present invention in a state where the launch unit is housed in the housing. 5 is a view showing a fixing part of an elastic firing device according to the present invention. The launching unit may be accommodated inside the housing as the fixing unit 300 is fitted into the first fixing hole and the second fixing hole while the first rubber band is stretched. In a state where the position of the second fixing hole coincides with the position of the first fixing hole, the fixing part is fitted into the first fixing hole and the second fixing hole, so that the launching part is fixed while being accommodated inside the housing despite the elastic force of the first rubber band. can

The elastic launch device may be stored and distributed in the state shown in FIGS. 4 and 5 , that is, in a state where the launch unit is accommodated and fixed in the housing. A state in which the launch unit is accommodated and fixed in the housing may be expressed as a state before the elastic launch device is used.

6 is a view showing a fixing part of an elastic firing device according to the present invention. Referring to FIG. 6 , according to various embodiments, the folding portion may be folded along a first line (dotted line in FIG. 6 ), and the fixing portion may be divided into a first area and a second area with the first line as a boundary. The first area of the fixing part (rectangular part in FIG. 6 ) is fitted into the first fixing hole and the second fixing hole, and is located inside the housing when the launching part is fixed while being accommodated in the housing. The second region of the fixing part (the semicircular part in FIG. 6 ) is exposed to the outside of the housing when the launching part is fixed while being housed in the housing.

7 is a view showing that the launching unit protrudes from the upper surface of the housing in the elastic launching device according to the present invention.

As the fixing part is separated from the housing, that is, separated from the first fixing hole and the second fixing hole, the launching part may protrude toward the upper surface of the housing by the elastic force of the first rubber band. As in the above example, when the launch unit has a structure in which bodies of the same shape are overlapped in two layers and confetti is stored between the overlapping bodies, the launch unit protrudes due to the elastic force of the first rubber band and constitutes the launch unit at the same time. As the first surface 201 and the second surface 202 are spread apart, the confetti stored between the first surface 201 and the second surface 202 can be sprayed into the air.

Separation of the fixing unit from the housing by the user may be expressed as using an elastic launch device. In order to recycle the device that has been used once, the user pushes the launcher into the housing and fits the fixing unit into the first fixing hole and the second fixing hole while matching the second fixing hole of the launcher to the first fixing hole of the housing. , the launch unit can be fixed in a state accommodated inside the housing.

According to various embodiments, the fixing part may be formed of a plastic material. For example, the fixing part may be formed of a plastic material such as polyethylene terephthalate (PET), polypropylene (PP), poly vinyl chloride (PVC), or acrylic. According to various embodiments, the material of the fixing unit is not limited as long as it is a material other than plastic and can be folded and has a hardness greater than or equal to a critical value. Since the fixing portion has a hardness equal to or greater than a critical value, damage to the fixing portion can be prevented when the elastic launch device is to be recycled.

According to various embodiments, the housing may be formed of paper coated with synthetic resin. Even if the housing is made of synthetic resin-coated paper, the possibility of damage to the housing is low because the fixing part having hardness above the critical value is fitted into the hole formed in the housing and the launching part, and no part of the housing needs to be deformed or moved. .

According to various embodiments, the housing may be formed of paper not coated with synthetic resin or a material other than paper, for example, a plastic material such as PET.

According to various embodiments, the area at the bottom of the second fixing hole of the launching part may have a color different from that used in the area corresponding to the first fixing hole of the third surface, which is one of the inner surface of the housing and both sides of the support part. there is. The third surface is a surface exposed to the outside of the housing through the first fixing hole in a state where the launch unit protrudes to the upper surface of the housing. In the structure of FIG. 2A , the third surface is a surface facing the first surface 140 of the housing among both surfaces of the support part 130 . In the structure of FIG. 2B , the third surface is an inner surface of the second surface 145 of the housing that is not exposed to the outside of the housing.

As described above, when the user intends to recycle the elastic firing device, the second fixing hole must match the first fixing hole. By configuring the color of the area at the bottom of the second fixing hole in the launching part to be different from the color of the area corresponding to the first fixing hole on the third surface, the second fixing hole is replaced with the first fixing hole while the user moves the launching unit. It is easy to see how much lower the launcher must be moved to match the . For example, when the user sees the color of the area corresponding to the first fixing hole on the third surface through the first fixing hole, the area at the bottom of the second fixing hole is located above the first fixing hole. So, it means that the launching part should be moved to the lower part a lot. For example, when the user sees the color of the area at the bottom of the second fixing hole of the launching unit through the first fixing hole, the second fixing hole is located above the first fixing hole but close to the first fixing hole. Since it means that it is positioned, it means that the second fixing hole can be matched with the first fixing hole by moving the firing part to the bottom a little more. For example, when the user sees the second fixing hole through the first fixing hole, it means that the second fixing hole coincides with the first fixing hole.

8 is a view showing a state in which the launching unit protrudes from the upper surface of the housing in the elastic launching device including the expansion unit according to the present invention. The elastic launch device may further include at least one expansion unit and a second rubber band 270 . Although it is shown in FIG. 8 that two extensions of a first extension 410 and a second extension 420 are included, the number of extensions is not limited according to various embodiments.

The launching unit may further include a pair of third holes 250 and 260 . Each of the at least one expansion part may include a pair of fourth holes. Referring to FIG. 8 , the first expansion part 410 includes a pair of fourth holes 411 and 412, and the second expansion part 420 includes a pair of fourth holes 421 and 422. do. At least one extension is arranged to extend outside the width of the housing when the launching unit protrudes from the upper surface of the housing.

The second rubber band 270 connects the pair of third holes 250 and 260 and the pair of fourth holes 411, 412, 421 and 422 included in the at least one expansion part, and the launch unit connects the upper surface of the housing. It can have the shortest length when it protrudes into . According to various embodiments, the second rubber band 270 may connect only the fourth holes included in a specific partial expansion part among at least one expansion part. For example, the second rubber band 270 connects the pair of third holes 250 and 260 and the pair of fourth holes 411 and 412 included in the first expansion part 410, and The pair of fourth holes 421 and 422 included in the extension 420 may not be connected. In this case, the elastic launch device may further include a third rubber band connecting the pair of third holes 250 and 260 and the pair of fourth holes 421 and 422 included in the second expansion part 420. can

9 is a view showing a state in which the launch unit is accommodated in the housing in the elastic launch device including an extension unit according to the present invention.

Referring to FIG. 9 , the extension part may be disposed from a state extending outside the width of the housing as shown in FIG. 8 to a state in which the launching part and at least one extension part can be accommodated inside the housing when they are accommodated inside the housing. there is. Accordingly, the second rubber band 270 may be stretched compared to the state of FIG. 8 .

When the user separates the fixing unit from the housing and the elastic launching device transitions from the state of FIG. 9 to the state of FIG. 8, the launching unit protrudes to the upper surface of the housing due to the elasticity of the first rubber band, and at the same time, by the elasticity of the second rubber band , the at least one extension may extend outside the width of the housing.

The elastic launch device according to an embodiment of the disclosed technology has been described with reference to the embodiment shown in the drawings to aid understanding, but this is merely an example, and various modifications and equivalents thereto can be made by those skilled in the art. It will be appreciated that other embodiments are possible. Therefore, the true technical protection scope of the disclosed technology should be defined by the appended claims.

110: housing
120: first fixing hole
130: support
135: first hanging part
140: housing first surface
145: housing second side
146: first adhesive part
147: second adhesive part
150, 160: first hole
200: launch unit
201: first surface of the launching unit
202: second surface of launch unit
203: second hanging part
210, 220: second hole
230: first rubber band
240: second fixing hole
250, 260: 3rd hole
270: second rubber band
300: fixing part
410: first extension
420: second extension
411, 412, 421, 422: 4th hole

Claims (5)

A housing having a space inside the body;
firing department; and
Including a first rubber band for firing the launching unit,
A support having a pair of first holes is provided inside the space, and a pair of second holes are provided at the lower end of the launching part,
The first rubber band connects the pair of first holes and the pair of second holes,
When the launch unit is accommodated in the housing, the first rubber band is stretched,
The launch unit is fixed in a state accommodated inside the housing in a state where the first rubber band is stretched,
The launching part is configured to protrude from the upper surface of the housing according to the elasticity of the first rubber band,
The housing includes a first hooking part formed by extending one outer surface of the housing or the support part and folding it into the space,
The launching unit includes a second hooking unit,
The first catching part and the second catching part are configured to brake the firing part by being caught by the second catching part when the firing part protrudes to the upper surface of the housing,
The launching unit includes a first side of the launching unit and a second side of the launching unit, the first side of the launching unit and the second side of the launching unit are in contact with each other at a fold line and overlap each other, and the first side of the launching unit is the launching unit. Of the first surface and the second surface of the launching part, a surface close to the first engaging part,
The second hooking part is formed by cutting a first region on the first surface of the launching part located at the lower end of the first surface along an incision line, both ends of the incision line being on the fold line, 2 The engaging part is an area surrounded by a line segment on the fold line formed by both ends of the incision line of the first surface of the launching part and the incision line. According to claim 1,
The elastic launch device further includes a fixing part separable from the housing,
A first fixing hole is provided on an outer surface of the housing,
The firing part is provided with a second fixing hole,
The launching part is fixed in a state accommodated inside the housing as the fixing part is fitted into the first fixing hole and the second fixing hole in a state where the first rubber band is stretched,
The launching part is configured to protrude to the upper surface of the housing according to the elasticity of the first rubber band when the fixing part is separated from the housing.
Elastic launch device. According to claim 1,
The elastic launch device further includes at least one extension and a second rubber band,
The launching part further includes a pair of third holes,
Each of the at least one expansion part includes a pair of fourth holes,
The at least one expansion part is disposed to extend outside the width of the housing when the launching part protrudes from the upper surface of the housing,
The second rubber band connects the pair of third holes and at least one pair of fourth holes among the pair of fourth holes included in the at least one expansion part,
The second rubber band is stretched when the launching part and the at least one expansion part are received inside the housing,
When the launching unit protrudes from the upper surface of the housing, the at least one expansion unit extends outside the width of the housing by elasticity of the second rubber band. According to claim 1,
The launching unit includes an envelope positioned between the first side of the launching unit and the second side of the launching unit and having an open top,
The launching unit further comprises a guide sheet located within the envelope and extending over an upper surface of the housing. According to claim 2,
An area of the lower end of the second fixing hole of the launching part has a different color from a region corresponding to the position of the first fixing hole of the third surface, which is one of the inner surface of the housing and both side surfaces of the support part,
The third surface is a surface exposed to the outside of the housing through the first fixing hole in a state in which the launch unit protrudes to the upper surface of the housing, the elastic launch device.

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