KR20200077921A - Foldable bleacher - Google Patents

Abstract

In one embodiment of the present invention, a foldable bleacher includes a plurality of folded bleacher platforms. The foldable bleacher includes: a first frame which is arranged on a lower portion of a front surface of the bleacher and of which a longitudinal direction is arranged in a first direction; a second frame which is arranged on a lower portion of a back surface of the bleacher and of which a longitudinal direction is arranged in the first direction; a third frame which is arranged between the first frame and the second frame and of which a longitudinal direction is arranged in a second direction perpendicular to the first direction, a front end faces the first frame, and a back end faces the second frame; and a coupling device detachably coupling the third frame to the first frame of the second frame.

Description

Folding bleacher {Foldable bleacher}

The embodiment relates to a foldable bleacher that is easy to install and use, and has a structure that is safe for visitors and workers.

The content described in this section merely provides background information for the embodiment and does not constitute a prior art.

The foldable bleachers are a bleachers having a plurality of spectators that the spectators can stay and use, and have a structure to fold or unfold these spectators. In addition, the foldable bleachers are movable as a whole, and thus have higher utility than the bleachers fixed in a specific place.

That is, the foldable bleachers are used to increase the efficiency of the space in outdoor large-scale sports facilities, indoor gymnasiums, auditoriums, various performance halls, and event venues, and multiple spectators can be unfolded or folded.

After the move to the installation site, the grandstands are unfolded, so that the spectators can use the grandstands. The bleachers, which have been used in a specific place, are folded again, and can be moved and stored in a folded state or used again by moving to another installation location.

For this reason, the folding-type grandstand is folded or unfolded, and since the entire grandstand moves, various operations may be required.

Therefore, when installing, moving, and using a spectator, it is required to develop a foldable bleacher having a structure capable of increasing worker's work efficiency and ensuring worker and spectator safety.

Accordingly, the embodiment relates to a foldable bleacher that is simple to install and use, and has a structure that is safe for visitors and workers.

The technical problems to be achieved by the embodiments are not limited to the technical problems mentioned above, and other technical problems that are not mentioned may be clearly understood by a person having ordinary knowledge in the technical field to which the embodiment belongs from the following description.

An embodiment of the foldable bleachers includes: a foldable bleacher comprising a plurality of foldable spectators, a first frame disposed at a lower front of the bleachers and having a longitudinal direction disposed in a first direction; A second frame disposed at a lower rear of the grandstand and having a longitudinal direction in a first direction; Arranged between the first frame and the second frame, the longitudinal direction is disposed in a second direction perpendicular to the first direction, the front end is opposite to the first frame and the rear end is opposite to the second frame. A third frame; And a coupling device for coupling the third frame to the first frame or the second frame to be detachable.

The third frame is provided in plural, and each of the third frames is disposed in each of the plurality of viewing stages, and as at least a portion of the plurality of third frames moves in the second direction, a plurality of the viewing At least some of the stages may overlap each other in a third direction perpendicular to the first direction and the second direction.

The coupling device may include a first coupling unit coupling the first frame and the third frame to each other; And a second coupling part coupling the second frame and the third frame to each other.

The first coupling portion may include a plurality of first pads respectively disposed at positions corresponding to the front ends of the plurality of third frames along the first “‡” direction on the first frame; And a plurality of second pads respectively disposed at the front ends of the plurality of third frames, wherein the first pad and the second pad are coupled to each other by a magnetic coupling method, and the second coupling unit , A plurality of third pads respectively disposed at positions corresponding to rear ends of the plurality of third frames along the first “‡” direction in the second frame; And a plurality of fourth pads respectively disposed at rear ends of the plurality of third frames, and the third pad and the fourth pad may be coupled to each other by a magnetic coupling method.

The first pad may be an electromagnet when a current is applied, and may be magnetically coupled to the second pad made of a metal material.

The third pad may be an electromagnet by applying a current, and may be magnetically coupled to the fourth pad made of a metal material.

When the first pad and the second pad are not magnetically coupled to each other, and a portion of the third pad and the fourth pad are magnetically coupled to each other, when viewed in the second direction, disposed in the front portion of the grandstand The plurality of spectators are in an unfolded state, and the plurality of spectators disposed in the rear portion of the bleachers may be in a state of being overlapped with each other in the third direction.

A portion of the first pad and the second pad is magnetically coupled to each other, and when the third pad and the fourth pad are not magnetically coupled to each other, the second pad is disposed in the rear portion of the bleacher when viewed in the second direction. The plurality of spectators may be in an unfolded state, and the plurality of spectators disposed in the front portion of the bleachers may be in a state in which they overlap each other in the third direction.

When the first pad and the second pad are all magnetically coupled to each other, and the third pad and the fourth pad are all magnetically coupled to each other, a plurality of the viewing stages are all overlapped with each other in the third direction. It can be.

An embodiment of the foldable bleachers includes: a driving unit disposed on the front side of the bleachers, coupled with the first frame, and providing a driving force so that a plurality of the bleachers are movable in the second direction; And a moving support part disposed on the rear side of the grandstand to be coupled to the second frame and supporting the grandstand to be movable, wherein the driving unit moves in the second direction with respect to the moving support, so that the viewing end All or part of the unfolding may be, or all or part of the viewing stage may overlap each other in the third direction.

In the embodiment, the coupling device for coupling the third frame and the first frame or the second frame is provided by a magnetic coupling method, so that it is possible to perform the coupling and disengagement very easily and space efficiency compared to other mechanical coupling means. Can be increased.

In addition, by being provided by a magnetic coupling method can be coupled using a strong magnetic force, it is possible to significantly suppress the occurrence of accidents due to unintentional disengagement to promote the safety of visitors and workers.

In an embodiment, the coupling device can prevent the state of the bleacher from changing due to external force by moving the third frame in the first direction while the rear part of the bleacher is folded, thereby promoting the safety of the spectator or worker using the bleachers. .

In an embodiment, the coupling device may prevent the state of the bleacher from changing due to external force of the third frame moving in the first direction while the front part of the bleacher is folded, thereby promoting safety of the spectator or worker using the bleacher. .

In the embodiment, when the bleachers are moved while maintaining the shape, the bleachers can be significantly reduced in volume compared to the whole or part of the unfolded state, making it easier to work and maintaining the overlapped state by firmly coupling by magnetic coupling. By doing so, it is possible to effectively prevent a decrease in work efficiency and a danger of an operator due to deformation of the shape of the bleachers during work.

In an embodiment, the grandstand is provided with a driving unit and a moving support, so that the entire movement of the grandstand, or folding or unfolding all or part of the grandstand, can be easily performed.

1 is a perspective view showing a state in which the foldable seats of the embodiment are all unfolded.
FIG. 2 is a view of FIG. 1 viewed from a different angle.
3 is a bottom view of FIG. 1.
4 is a view showing a second pad and a fourth pad in one embodiment.
5 is a perspective view showing a folded state of the embodiment in the front of the grandstand and the rear of the grandstand folded state.
FIG. 6 is a view of FIG. 5 viewed from a different angle.
7 is a bottom view of FIG. 5.
8 is a perspective view showing a state in which the front part of the grandstand is folded and the rear part of the grandstand is unfolded in the folding-type grandstand of the embodiment.
FIG. 9 is a view of FIG. 8 viewed from a different angle.
10 is a bottom view of FIG. 8.
11 is a perspective view showing the folded state of the entire folding type of the embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Embodiments may be variously changed and have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiment to a specific disclosure form, it should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the embodiment.

The terms "first", "second", etc. can be used to describe various components, but the components should not be limited by the terms. The terms are used to distinguish one component from other components. In addition, terms specifically defined in consideration of the configuration and operation of the embodiments are only for describing the embodiments and do not limit the scope of the embodiments.

In the description of the embodiment, when described as being formed on the "top (top)" or "bottom (bottom) (on or under)" of each element, the top (top) or bottom (bottom) (on or under) ) Includes both two elements directly contacting each other or one or more other elements formed indirectly between the two elements. In addition, when expressed as “up (up)” or “down (down)” (on or under), it may include the meaning of the downward direction as well as the upward direction based on one element.

In addition, relational terms, such as "top/top/top" and "bottom/bottom/bottom" as used below, do not necessarily imply or imply any physical or logical relationship or order between such entities or elements, It can also be used to distinguish one entity or element from another.

Also, in the drawings, Cartesian coordinate systems (x, y, z) may be used. For clarity, in each drawing, the first direction is represented by the y-axis direction, the second direction is the x-axis direction, and the third direction is the z-axis direction.

1 is a perspective view showing a state in which the foldable bleachers of the embodiment are all unfolded. FIG. 2 is a view of FIG. 1 viewed from a different angle. 3 is a bottom view of FIG. 1. 4 is a view showing a second pad 412 and a fourth pad 422 in one embodiment.

Referring to FIG. 1, the foldable bleachers of the embodiment include a plurality of foldable spectators 10, and each spectator 10 is sequentially increased from front to rear along the second direction. Therefore, the spectator can easily secure a field of view when viewing at each spectator 10.

Although not shown for the sake of clarity, each viewing stage 10 is provided with a chair in which a spectator can sit, and a plurality of such chairs may be arranged along the first direction.

In the foldable bleachers of the embodiment, each spectator 10 may be folded by moving in the second direction. At this time, the folding of the viewing stage 10 may mean that each viewing stage 10 is in a state of being overlapped with each other in the vertical direction, that is, in the third direction.

On the contrary, that the viewing stage 10 is unfolded may mean that each viewing stage 10 does not overlap with each other in the third direction, so that the viewing stage can be viewed by each viewing stage 10. . In FIG. 1, the entire state of each viewing stage 10 is shown.

For example, the grandstand of the embodiment moves in a state where the entire spectator 10 is folded, so that the whole or part of the spectator 10 is unfolded at the place of placement, so that the spectators can use the grandstand.

That is, the viewing seat of the embodiment is folded by the viewing stage 10 when moving, and when used, the viewing stage 10 is unfolded, so that the convenience of use can be improved as compared to a viewing seat having a structure fixed at a specific place.

The grandstand may include a first frame 100, a second frame 200, a third frame 300, and a coupling device 400. Of course, each frame can be combined with other structures or structures disposed in the third direction to support the viewing stage 10. In addition, although a detailed description is omitted, the grandstand may have various additional components to implement a structure for folding or unfolding, that is, a folding structure.

The first frame 100 is disposed at the bottom of the front of the grandstand, and may be provided in a bar shape. At this time, the first frame 100 may be disposed in the longitudinal direction in the first direction. The first direction, referring to FIG. 1, may mean the width direction of the grandstand.

The first frame 100 is fixed to, for example, the viewing stage 10 disposed at the front of the grandstand and can move in the second direction together with the viewing stage 10 of the frontmost stage.

The second frame 200 is disposed under the rear of the grandstand and may be provided in a bar shape. In this case, the second frame 200 may have a longitudinal direction in the first direction.

The second frame 200 is, for example, fixedly coupled to the third frame 300 disposed at the rear of the grandstand, and the third frame 300 of the rearmost stage is the viewing stage disposed at the rear of the grandstand It can be fixed to (10). Accordingly, the second frame 200 may move in the second direction together with the rearmost viewing end 10.

The third frame 300 is disposed between the first frame 100 and the second frame 200 and may be provided in a bar shape. In this case, the third frame 300 may be arranged in a second direction in which the longitudinal direction is perpendicular to the first direction.

The third frame 300 may be disposed such that the front end faces the first frame 100 and the rear end faces the second frame 200. A plurality of third frames 300 may be provided, and each of the third frames 300 may be disposed in each of the plurality of viewing stages 10.

Since the third frame 300 moves in the second direction while supporting each viewing end 10, a wheel in contact with the ground may be provided for easy movement. In addition, the third frame 300 may be provided on a separate wheel to be disposed at a portion in contact with each other in order to reduce the generation of frictional force due to mutual contact when moving in the second direction.

Referring to FIG. 1, a plurality of third frames 300 may be provided in a number corresponding to a plurality of viewing stages 10. In the embodiment, a total of 10 viewing stages 10 are provided, and likewise, the third frame 300 may also be provided in total 10. Of course, the number of the third frame 300 and the viewing stage 10 is not limited to this, and may be provided with fewer than 10 or more than 10.

Each third frame 300 may be fixedly coupled to each viewing end 10 by a vertical structure. Therefore, the third frame 300 and the viewing end 10 fixed thereto may be integrally moved in the second direction.

Referring to FIG. 3, each third frame 300 may be provided as a pair spaced apart from each other in the first direction for stable support of the grandstand. The third frames 300 may be arranged such that at least a portion thereof is in contact, and thus, each third frame 300 may overlap each other in the first direction in a state where the entire bleachers are folded.

Referring to FIG. 3 again, since each of the third frames 300 is adjacent to each other but must be arranged so as not to interfere with each other, for example, the third frame 300 is biased toward the center of the grandstand toward the front from the rear of the grandstand. Can be arranged to strike.

The third frame 300 disposed at the front of the grandstand is fixedly or integrally combined with the first frame 100, and the third frame 300 disposed at the rear of the grandstand is the second frame 200 And fixedly or integrally.

Due to this structure, for the coupling between the third frame 300 and the first frame 100 of the frontmost, and for the coupling between the third frame 300 and the second frame 200 of the rearmost, described later The coupling device 400 is not required. Accordingly, the coupling device 400 to be described later may be used for coupling between the remaining third frame 300 and the first frame 100 or the second frame 200 except for this portion.

In the grandstand of the embodiment, as at least some of the plurality of third frames 300 move in the second direction, at least some of the plurality of viewing stages 10 are perpendicular to the first direction and the second direction In one third direction, they may overlap each other, and accordingly, all or part of the viewing stage 10 may be folded.

When the bleachers are moved or stored, as shown in FIG. 11, all of the plurality of bleachers 10 are in a folded state, so that the bleachers can be easily moved or stored. When the entire bleachers are used, as shown in FIG. 1, the entire plurality of spectators 10 is in an unfolded state, so that the audience can use the entire spectators 10.

As shown in FIGS. 5 and 8, a part of the viewing stage 10 is unfolded and the rest is folded, so that only a part of the entire grandstand is used by the spectators, the grandstand is placed in a relatively small space to be used efficiently. Can.

The coupling device 400 may combine the third frame 300 to be detachably attached to the first frame 100 or the second frame 200. The coupling device 400 can stably maintain the arrangement state of the bleachers and suppress deformation of the bleachers to promote the safety of users and workers.

For example, referring to FIG. 11, in a state where all of the plurality of viewing stages 10 are folded, the coupling device 400 fixes the third frame 300 to the first frame 100 or the second frame 200. By combining, and thereby stably maintaining the folded state of all of the plurality of viewing stages 10, at least a part of the viewing stage 10 is unfolded during movement of the grandstand, thereby effectively suppressing the occurrence of danger.

For example, referring to FIG. 5, among the plurality of viewing stages 10, the portion disposed on the rear portion 22 of the grandstand is folded and the rest is unfolded, and the coupling device 400 is attached to the folded viewing stage 10. The provided third frame 300 is fixedly coupled to the second frame 200, and accordingly, a part of the plurality of viewing stages 10 can be stably maintained.

In addition, referring to FIG. 8, for example, a portion of the plurality of viewing stages 10 disposed on the front portion 21 of the grandstand is folded and the rest is unfolded, and the coupling device 400 is folded at the viewing stage 10 ), the third frame 300 is fixedly coupled to the first frame 100, and accordingly, a part of the plurality of viewing stages 10 can be stably folded.

Accordingly, a part of the plurality of spectators 10 is folded, and the rest of the plurality of spectators 10 are stably maintained by the coupling device 400, so that at least a part of the spectators 10 is unfolded or folded while the spectators are present. The risk of injury can be effectively suppressed.

1, 2 and 4, the coupling device 400 may include a first coupling portion 410 and a second coupling portion 420.

The first coupling part 410 may couple the first frame 100 and the third frame 300 to each other and include a first pad 411 and a second pad 412. On the other hand, as shown in the drawings, the first pad 411 to the fourth pad 422 may be provided in a plate shape, each of the first frame 100 to the third frame 300 to be firmly attached. Can.

A plurality of first pads 411 may be provided, and may be disposed on the first frame 100 at positions corresponding to the front ends of the plurality of third frames 300 along the first “‡” direction. Thus, referring to FIG. 2, the plurality of first pads 411 may be arranged spaced apart from each other in the second direction in the first frame 100. A plurality of second pads 412 may be provided, and may be respectively disposed at the front ends of the plurality of third frames 300.

Therefore, the first pad 411 and the second pad 412 may be provided to face each other in the second direction. The first pad 411 and the second pad 412 may be coupled to each other by a magnetic coupling method.

For example, a power cable 401 is connected to the first pad 411, and current may be applied to the first pad 411 from a power source (not shown) through the power cable 401. The first pad 411 may be an electromagnet by applying a current and may be magnetically coupled to the second pad 412 made of a metal material.

That is, by coupling the first pad 411 and the second pad 412 by magnetic coupling, the first frame 100 and the third frame 300 to which they are attached can be firmly coupled to each other. On the other hand, when the application of current to the first pad 411 is released, the magnetic coupling between the first pad 411 and the second pad 412 is released, and thus, between the first frame 100 and the third frame 300. Coupling can also be released.

For example, the plurality of viewing stages 10 move in the second direction so that the first frame 100 and the third frame 300 are close to each other, and accordingly, the first pad 411 and the second pad 412 ) May be placed in contact with each other or in very close positions. At this time, when a current is applied to the first pad 411, the first pad 411 and the second pad 412 are magnetically coupled to each other, so that the first frame 100 and the third frame 300 are mutually coupled. Can be firmly combined.

Conversely, when the current application to the first pad 411 is released, the coupling between the first frame 100 and the third frame 300 is released, and the third frame 300 moves in the second direction to move the first frame ( 100).

The second coupling part 420 may couple the second frame 200 and the third frame 300 to each other and include a third pad 421 and a fourth pad 422.

A plurality of third pads 421 may be provided, and may be disposed on the second frame 200 at positions corresponding to the rear ends of the plurality of third frames 300 along the first “‡” direction. Accordingly, referring to FIG. 1, a plurality of third pads 421 may be disposed spaced apart from each other in the first direction in the second frame 200. A plurality of fourth pads 422 may be provided, and may be disposed at rear ends of the plurality of fourth frames, respectively.

Therefore, the third pad 421 and the fourth pad 422 may be provided to face each other in the second direction. The third pad 421 and the fourth pad 422 may be coupled to each other by a magnetic coupling method.

For example, a power cable 401 may be connected to the third pad 421, and current may be applied to the third pad 421 from the power source through the power cable 401. The third pad 421 may be an electromagnet by receiving a current and may be magnetically coupled to the fourth pad 422 made of a metal material.

That is, the third pad 421 and the fourth pad 422 are coupled by magnetic coupling, so that the second frame 200 and the third frame 300 to which they are attached can be firmly coupled to each other. On the other hand, when the current is released to the third pad 421, the magnetic coupling between the third pad 421 and the fourth pad 422 is released, and thus, between the second frame 200 and the third frame 300. Coupling can also be released.

For example, the plurality of viewing stages 10 move in the second direction so that the second frame 200 and the third frame 300 are close to each other, and accordingly the third pad 421 and the fourth pad 422 ) May be placed in contact with each other or in very close positions. At this time, when a current is applied to the third pad 421, the third pad 421 and the fourth pad 422 are magnetically coupled to each other, so that the second frame 200 and the third frame 300 are mutually coupled. Can be firmly combined.

Conversely, when the current application to the third pad 421 is released, the coupling between the second frame 200 and the third frame 300 is released, and the third frame 300 moves in the second direction to move the second frame ( 200).

In an embodiment, the coupling device 400 for coupling the third frame 300 and the first frame 100 or the second frame 200 is provided by a magnetic coupling method, so as to be compared with other mechanical coupling means, It is very easy to disengage and can increase the space efficiency.

In addition, by being provided by a magnetic coupling method can be coupled using a strong magnetic force, it is possible to significantly suppress the occurrence of accidents due to unintentional disengagement to promote the safety of visitors and workers.

5 is a perspective view showing a folded state of the embodiment, the front part 21 of the grandstand is unfolded and the rear part 22 of the grandstand is folded. FIG. 6 is a view of FIG. 5 viewed from a different angle. 7 is a bottom view of FIG. 5.

5 to 7, the bleachers can be used in a state in which only the front portion 21 is unfolded and the rear portion 22 is folded. This is a method that can be used, for example, when there are not many visitors, or when a grandstand is placed in a small space.

In this case, the third frame 300 is firmly coupled to the second frame 200 using the coupling device 400 of the embodiment, so that the rear part 22 of the grandstand moves in the second direction by an unintended external force. By suppressing this, the folded state of the rear part of the grandstand 22 can be stably maintained.

On the other hand, separate fixing means (not shown) for suppressing movement in the second direction by an unintended external force while the front portion 21 of the grandstand is unfolded, each spectator 10, each third frame ( 300) or other structures that combine with them.

Specifically, when the first pad 411 and the second pad 412 are not magnetically coupled to each other, and some of the third pad 421 and the fourth pad 422 are magnetically coupled to each other , Viewed in the second direction, the plurality of viewing stages 10 arranged in the front portion 21 of the grandstand are in an unfolded state, and the plurality of viewing stages 10 arranged in the rear portion 22 of the grandstand May overlap with each other in the third direction, that is, a folded state.

For example, referring to FIG. 5, in a grandstand having a total of 10 spectators 10, a total of four folded spectators 10 form the rear part 22 of the grandstand, and a total of six unfolded The viewing stage 10 in the state may form the front portion 21 of the grandstand.

At this time, as described above, the frontmost third frame 300 is fixedly or integrally coupled to the first frame 100 and is not coupled by the coupling device 400. Similarly, the third frame 300 at the rear end is fixedly or integrally coupled to the second frame 200 and is not coupled by the coupling device 400.

In addition, since the first pad 411 and the second pad 412 are not magnetically coupled to each other, the third frames 300 other than the foremost third frame 300 are not combined with the first frame 100. Can be spaced apart.

In addition, three third frames 300 that are always coupled to the second frame 200 by magnetic coupling between the third frame 300 and the third pad 421 and the fourth pad 422 are fixed. Combined with the second frame 200, a total of four third frames 300 are coupled to the second frame 200, so that a total of four viewing stages 10 are superimposed on the rear part 22 of the grandstand. Can be.

In an embodiment, the coupling device 400 suppresses the state of the bleacher by changing the third frame 300 by the external force in the second direction while the rear part 22 of the bleacher is folded to use the bleachers It can promote the safety of visitors or workers.

8 is a perspective view showing a folded state of the embodiment, the front part 21 of the grandstand is folded and the rear part 22 of the grandstand is unfolded. FIG. 9 is a view of FIG. 8 viewed from a different angle. 10 is a bottom view of FIG. 8.

8 to 10, the grandstand is a state in which only the rear portion 22 is unfolded and the front portion 21 can be used in a folded state. This is a method that can be used, for example, when there are not many visitors, or when a grandstand is placed in a small space. In addition, compared to the embodiments shown in FIGS. 5 to 7, it is a method that can be used when it is necessary to increase the position of the spectator in order to facilitate securing the view of the spectator.

In this case, the third frame 300 is firmly coupled to the first frame 100 using the coupling device 400 of the embodiment, so that the front seat 21 moves in the second direction by an unintended external force. By suppressing this, the folded state of the front seat 21 can be stably maintained.

On the other hand, in the state in which the rear portion 22 of the grandstand is unfolded, the separate fixing means for suppressing movement in the second direction due to unintentional external force is applied to each viewing stage 10, each third frame 300, or It may be provided in other structures that combine with them.

Specifically, when a portion of the first pad 411 and the second pad 412 are magnetically coupled to each other, and the third pad 421 and the fourth pad 422 are not magnetically coupled to each other , Viewed in the second direction, the plurality of viewing stages 10 arranged in the rear portion 22 of the grandstand become an unfolded state, and the plurality of viewing stages 10 arranged in the front portion 21 of the grandstand May overlap with each other in the third direction, that is, a folded state.

For example, referring to FIG. 8, in a grandstand having a total of 10 spectators 10, a total of six folded spectators 10 form the front portion 21 of the grandstand, and a total of four unfolded The viewing stage 10 in the state may form the rear portion 22 of the grandstand.

At this time, as described above, the frontmost third frame 300 is fixedly or integrally coupled to the first frame 100 and is not coupled by the coupling device 400. Similarly, the third frame 300 at the rear end is fixedly or integrally coupled to the second frame 200 and is not coupled by the coupling device 400.

In addition, since the third pad 421 and the fourth pad 422 are not magnetically coupled to each other, the remaining third frames 300 except the rearmost third frame 300 are combined with the second frame 200. Can be separated.

In addition, there are five third frames 300, which are coupled by a magnetic coupling between the first front frame 3 and the first pad 411 and the second pad 412, which are always fixed to the first frame 100. Combined with the first frame 100, a total of six third frames 300 are coupled to the first frame 100, so that a total of six viewing stages 10 are superimposed on the front part 21 of the grandstand. Can.

In an embodiment, the coupling device 400 suppresses the state of the bleacher by changing the third frame 300 by the external force in the second direction while the front part 21 of the bleacher is folded, and uses the bleachers It can promote the safety of visitors or workers.

11 is a perspective view showing the folded state of the entire folding type of the embodiment. Referring to FIG. 11, the third frame 300 is combined with the first frame 100 and the second frame 200 so that each of the viewing stages 10 can be folded.

In the case of moving the bleachers while maintaining the shape in the embodiment, the bleachers can be significantly reduced in volume compared to the fully or partially unfolded viewing stage 10, thereby facilitating the operation and overlapping tightly by magnetic coupling. By maintaining the state, it is possible to effectively prevent deterioration of work efficiency and risk of workers due to deformation of the shape of the bleachers during work.

Specifically, when the first pad 411 and the second pad 412 are all magnetically coupled to each other, and the third pad 421 and the fourth pad 422 are all magnetically coupled to each other, The plurality of viewing stages 10 may be in a state in which they all overlap each other in the third direction, that is, a folded state.

For example, in a grandstand with a total of 10 viewing stages 10, the frontmost third frame 300 is fixedly or integrally coupled to the first frame 100 and is not coupled by magnetic coupling. , The front end of the third frame 300 may be coupled to the second frame 200 by magnetic coupling.

Also, the rear third frame 300 is fixedly or integrally coupled to the second frame 200 and not coupled by magnetic coupling, but the third frame 300 at the rear end has a first frame at the front end. It can be combined by 100 and magnetic coupling.

The remaining eight third frames 300 may be coupled by a magnetic coupling to the first frame 100 at the front end and the second frame 200 at the rear end, respectively. Accordingly, a total of ten third frames 300 are coupled to the first frame 100 and the second frame 200, and this coupling state can be maintained firmly by magnetic coupling.

Of course, the first pad 411 and the third pad 421 may release the current application to release the magnetic coupling, and all or part of the viewing stage 10 may be expanded to use the bleachers.

On the other hand, when the third frame 300 is provided as a pair among the above-mentioned contents, it is natural that the number illustrated in the description of the third frame 300 may be doubled.

4, 7 and 10, the grandstand of the embodiment may further include a driving unit 500 and a moving support unit 600.

The driving unit 500 may be disposed on the front side of the grandstand to be combined with the first frame 100 and provide driving force such that a plurality of the viewing stages 10 are movable in the second direction. The driving unit 500 may include a driving motor 510 and a driving wheel 520 receiving driving force from the driving motor 510.

The driving unit 500 may move the viewing stage 10 in the second direction so that all or part of the viewing stage 10 may be folded or unfolded. In addition, the driving unit 500 may be driven to move the entire grandstand.

The movable support part 600 is disposed on the rear side of the grandstand to be combined with the second frame 200 and supports the grandstand to be movable. That is, when the entire grandstand is moved from one place to another, the moving support 600 may support the grandstand to be movable.

When the grandstand is placed in the arrangement place, and when all or part of the viewing stage 10 is unfolded, the moving support part 600 does not move, and the driving part 500 moves in a second direction with respect to the moving support part 600. , The spectator 10 may be fully or partially unfolded.

Conversely, when all or a part of the grandstand is folded, the moving support part 600 does not move, and the driving part 500 moves in the second direction with respect to the moving support part 600, so that the All or part may overlap each other in the third direction.

In an embodiment, the grandstand is provided with a driving unit 500 and a movable support unit 600, so that the entire movement of the grandstand, or folding or unfolding all or part of the grandstand 10 can be easily performed.

Although only a few have been described as described above in connection with the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments may be combined in various forms, unless the technologies are incompatible with each other, and may be implemented as a new embodiment.

10: spectators
21: front part of the grandstand
22: rear part of the grandstand
100: first frame
200: second frame
300: third frame
400: coupling device
401: power cable
410: first coupling portion
411: first pad
412: second pad
420: second coupling portion
421: third pad
422: fourth pad
500: drive unit
510: drive motor
520: drive wheel
600: moving support

Claims (10)

In the foldable bleachers comprising a plurality of foldable spectators,
A first frame disposed at the bottom of the front of the grandstand and having a longitudinal direction in a first direction;
A second frame disposed at a lower rear of the grandstand and having a longitudinal direction in a first direction;
Arranged between the first frame and the second frame, the longitudinal direction is disposed in a second direction perpendicular to the first direction, the front end is opposite the first frame and the rear end is opposite the second frame. A third frame; And
Coupling device for coupling the third frame detachably to the first frame or the second frame
Containing
Foldable bleachers. According to claim 1,
The third frame is provided in a plurality, each of the third frame is disposed in each of the plurality of viewing stages,
As at least some of the plurality of third frames move in the second direction, at least some of the plurality of viewing stages overlap each other in a third direction perpendicular to the first direction and the second direction. Foldable bleachers. According to claim 2,
The coupling device,
A first coupling unit coupling the first frame and the third frame to each other; And
A second coupling unit coupling the second frame and the third frame to each other
Foldable bleachers comprising a. According to claim 3,
The first coupling portion,
A plurality of first pads respectively disposed at positions corresponding to the front ends of the plurality of third frames along the first “‡” direction in the first frame; And
A plurality of second pads respectively disposed at the front ends of the plurality of third frames
Including,
The first pad and the second pad are coupled to each other by a magnetic coupling method,
The second coupling portion,
A plurality of third pads respectively disposed at positions corresponding to rear ends of the plurality of third frames along the first “‡” direction in the second frame; And
A plurality of fourth pads respectively disposed at the rear ends of the plurality of third frames
Including,
The third pad and the fourth pad are foldable bleachers, characterized in that coupled to each other by a magnetic coupling method. According to claim 4,
The first pad,
Foldable bleachers characterized by being magnetically coupled to the second pad made of a metal material by receiving an electric current. According to claim 4,
The third pad,
Foldable bleachers characterized by being magnetically coupled to the fourth pad made of a metallic material by receiving an electric current. According to claim 4,
When the first pad and the second pad are not magnetically coupled to each other, and a portion of the third pad and the fourth pad are magnetically coupled to each other,
Viewed in the second direction, a plurality of viewing stages disposed in the front portion of the bleachers are in an unfolded state, and a plurality of viewing stages disposed in the rear portion of the bleachers are in an overlapping state in the third direction. Foldable bleachers. According to claim 4,
When a portion of the first pad and the second pad are magnetically coupled to each other, and the third pad and the fourth pad are not magnetically coupled to each other,
When viewed in the second direction, a plurality of viewing stages disposed at the rear portion of the bleachers are in an unfolded state, and a plurality of viewing stages disposed at the front portion of the bleachers are superimposed with each other in the third direction. Foldable bleachers. According to claim 4,
When the first pad and the second pad are all magnetically coupled to each other, and the third pad and the fourth pad are all magnetically coupled to each other,
The plurality of spectators are folded seats, characterized in that all overlap with each other in the third direction. According to claim 2,
A driving unit disposed on the front side of the grandstand to be coupled to the first frame and to provide a driving force such that a plurality of the viewing stages are movable in the second direction; And
A moving support unit disposed on the rear side of the grandstand, coupled with the second frame, and supporting the grandstand to be movable
Further comprising,
The driving part is moved in the second direction with respect to the moving support, so that all or part of the viewing stage is unfolded, or all or part of the viewing stage overlaps each other in the third direction.

Images