KR102669204B1 - Drawable seats system with backrest rotation control device - Google Patents

Abstract

The present invention relates to a retractable bleacher system in which a plurality of spectator seats are spread out in a stepwise manner or each unfolded spectator stage is stored under the upper spectator stage. More specifically, the chair installed on the spectator stage has a backrest with a rotation control device. The guard frame, which is easily and simply folded and moves the spectator seats forward and backward, is restricted in movement by the locking of the guard frame locking means and fixes the spectator seats, and the spectator seats pulled out to the front are further secured by a stopper. The present invention relates to a retractable bleacher system that prevents abnormal withdrawal, allows the extraction and storage of the bleachers to be performed sequentially and stably, and improves durability and maintainability.

Description

Drawable seats system with backrest rotation control device}

This relates to a retractable bleacher system in which a plurality of spectator seating platforms are spread out in a stepped manner or each unfolded spectator platform is stored under the directly upper spectator platform.

In general, retractable bleachers are manufactured in a way that several bleachers are sequentially unfolded in a stepped manner, and each unfolded bleacher is stored under the directly upper bleachers, allowing efficient use of space in gyms, auditoriums, various performance halls, and event halls. It is done. In other words, when there are no games, performances, events, etc., the bleachers are stored and the space occupied by the bleachers is utilized.

The above-mentioned retractable bleachers have the advantage of excellent space utilization, but the bleacher chairs installed on the bleachers automatically lie down toward the horizontal surface of the bleachers, that is, the floor, when stored, and when unloaded, the manager must manually set up the bleachers. The method is common.

This manual method has the disadvantage of requiring manpower, but has the advantage of reducing the installation and maintenance costs of retractable bleachers.

However, in contrast to the manual method described above, there is a method of automatically folding the bleachers using a motor. However, contrary to the manual method, the disadvantage is that installation and maintenance costs increase, and durability is reduced due to failure of the motor and electrical devices. There is a problem.

Republic of Korea Patent No. 10-751386

In order to solve the conventional problems as described above, the present invention provides a locking member for erecting and fixing the backrest bracket to a fixing bracket to which the backrest bracket to which the backrest is connected and the seat plate is rotatably connected, and rotating the locking member. Shiki provides a chair backrest rotation control device that fastens the rotation axis to the locking member, and when the backrest is upright, the locking member rotates according to the rotation of the rotation axis and is separated from the backrest bracket so that the backrest of the chair can be easily rotated. There is a purpose.

In addition, another purpose is to provide a chair backrest rotation control device in which one rotation axis is fastened to a plurality of chairs installed in a row at the end of the spectator stand, so that the backrests of multiple chairs can be rotated simultaneously by the rotation of one rotation axis. There is.

In addition, after a number of spectator seats are pulled forward by the movement of the guard frame and spread out in a staircase, the stopper prevents the spectator seats from being pulled out any further, and the guard frame locking means prevents the spectator seats from moving backwards. Another purpose is to provide a retractable bleacher system that is securely fixed and can stably perform withdrawal and storage operations.

In order to achieve the above object, the present invention is to provide a plurality of chairs with backrests foldable by a rotation control device installed on the bleachers, and a plurality of chairs are spread out in a stepwise manner, or each unfolded spectator stage is an upper bleacher. In the retractable bleacher system stored below the stage,

The rotation control device,

A backrest bracket connected to the chair backrest and having a catching hole at the bottom;

a fixing bracket in which a first fixing part is rotatably connected to the backrest bracket, and a second fixing part having a guide groove is formed in a lower part of the first fixing part;

The rotating part is rotatably seated in the guide groove, and a hook projection that is fastened to the locking hole of the backrest bracket to maintain the backrest in an upright state is formed on the upper part of the rotating part, and the hook projection is separated from the locking hole by rotation. A locking member that allows the backrest to rotate; and

It is disposed in front of the locking member in the fixing bracket, and one end is connected to the opposite side of the hook projection of the locking member to press the hook projection with elastic force so that it is not separated from the locking hole, and to press the hook projection separated from the locking hole with elastic force. It includes an elastic spring that returns it to its original position.

In addition, the present invention includes: a first through hole formed in the rotating part of the locking member; and

A rotating shaft is inserted into the first through hole of the locking member, rotates integrally with the locking member, and separates the hook protrusion from the locking hole by rotation to enable rotation of the backrest.

In addition, the present invention includes a guard frame that moves the spectator seats in the front and rear directions;

A support frame formed in the upper and lower directions at the rear end of the guard frame; and

A blocking plate is formed at the rear end of the spectator seating area, is connected to the support frame to allow the spectator seating platform to move integrally with the guard frame, and is disposed in the space between the spectator seating stages spaced upward and downward, including a;

A locking piece protruding from the front end of the guard frame toward the inside of the spectator area; and

The rear end is rotatably connected to the support frame, and after rotation, it returns to its original position by the elastic restoring force of the elastic spring, and when the guard frame moves forward and the spectator platform is pulled out, it is attached to the locking piece of the guard frame adjacent to the outside. It includes; guard frame locking means for fixing the fastened and drawn guard frame so that it does not move rearward, and releasing the fastening with the locking piece to enable the guard frame to move.

In addition, the present invention includes a stopper that protrudes from the blocking plate to the upper side of the blocking plate and hangs on the front end of the upper-level seating section to prevent the lower-level seating section pulled out in front of the upper-level seating section from being pulled out any further.

In the chair backrest rotation control device according to the present invention, a rotating shaft is fastened to a fixed bracket where the backrest bracket and the seat are connected, and the locking member that fixes the backrest in an upright state is separated from the backrest bracket by rotation of the rotating shaft to secure the backrest of the chair. It has the effect of being able to be easily rotated and unfolded.

In addition, after the locking member is separated from the backrest bracket, the locking member and the rotation axis return to their original positions by the elastic spring supporting the locking member. As a result, when you want to erect the chair backrest, you can lift the chair backrest without rotating the rotation axis. As the chair is erected, the backrest bracket and the locking member are fastened, allowing the backrest of the chair to be easily fixed in an upright position.

In addition, there is a notable effect in that one rotation axis is installed on a plurality of chairs installed in a row on one spectator stand, and when the rotation axis rotates, the backrests of the plurality of chairs can rotate simultaneously.

In addition, after the spectator seats are spread out in the form of stairs by the movement of the guard frame, the spectator seats are no longer pulled out by the stopper, the guard frame locking means is locked, so the spectator seats cannot move backward, and the guard frame locking means is locked. When released, the guard frame moves to the rear, which has the notable effect of allowing the spectator seats to be easily stored.

1 is a schematic diagram of the retractable bleacher system of the present invention.
2 and 3 are schematic diagrams of the backrest rotation control device applied to the present invention.
Figure 4 is a schematic diagram of a fixing bracket, locking member, and support piece applied to the rotation control device.
Figures 5 to 7 show the use state of the chair according to the operation of the backrest rotation control device.
Figure 8 is a use state in which the spectator seats are stored after the backrest of the chair is unfolded.
Figure 9 is a state in which the spectator seats are stored.
10 to 12 are operation diagrams and usage state diagrams showing preferred embodiments of the guard frame locking means applied to the present invention.
13 is a diagram showing the use state of the stopper applied to the present invention.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Figure 1 is a schematic diagram of the retractable bleacher system of the present invention, Figures 2 and 3 are schematic diagrams of the backrest rotation control device applied to the present invention, and Figure 4 is a fixing bracket, locking member, and support applied to the rotation control device. It is a convenient schematic diagram, and Figures 5 to 7 are diagrams showing the state of use of the chair according to the operation of the backrest rotation control device, Figure 8 is a diagram showing the state of use in which the bleachers are stored after the backrest of the chair is unfolded, and Figure 9 is a diagram of the states in which the bleachers are stored. It is a state diagram, and Figures 10 and 12 are operation diagrams and use state diagrams showing a preferred embodiment of the guard frame locking means applied to the present invention, and Figure 13 is a use state diagram of the stopper applied to the present invention.

The chair back rotation control device (A) according to the present invention includes a backrest bracket (10) connected to the chair backrest (1a) and having a locking hole (11) at the bottom; A first fixing part 110 to which the backrest bracket 10 is rotatably connected is formed, and a second fixing part 120 having a guide groove 121 is formed in the lower part of the first fixing part 110. A fixing bracket (100); The rotating part 230 is rotatably seated in the guide groove 121, and a hook projection 210 is fastened to the locking hole 11 of the backrest bracket 10 to maintain the backrest 1a in an upright state. A locking member 200 formed on the upper part of the rotating part 230, which separates the hook protrusion 210 from the locking hole 11 by rotation to enable rotation of the backrest 1a; and is disposed in front of the locking member 200 in the fixing bracket 100, and one end is connected to the opposite side of the hook projection 210 of the locking member 200 so that the hook projection 210 is separated from the locking hole 11. It includes an elastic spring 20 that pressurizes the hook protrusion 210 separated from the locking hole 11 to its original position by elastic force.

In addition, the present invention includes: a first through hole 231 formed in the rotating part 230 of the locking member 200; and is inserted into the first through hole 231 of the locking member 200, rotates integrally with the locking member 200, and separates the hook protrusion 210 from the locking hole 11 by rotation. It includes a rotation axis 300 that allows the backrest 1a to rotate.

In addition, the present invention includes a guard frame 610 that moves the spectator seats in the front and rear directions; A support frame 620 formed in the vertical direction at the rear end of the guard frame 610; And a blocking plate 630 formed at the rear end of the spectator stage, connected to the support frame 620 to allow the spectator stage to move integrally with the guard frame 610, and disposed in the space between the vertically spaced spectator stages. ); and a locking piece 660 protruding inward from the front end of the guard frame 610; And the rear end is rotatably connected to the support frame 620, returns to the original position by the elastic restoring force of the elastic spring after rotation, and when the guard frame 610 moves forward and the spectator stand is pulled out, it is adjacent to the outside. It is fastened to the locking piece 660 of the guard frame 610 to prevent the guard frame 610 from moving backward, or the guard frame 610 is moved rearward by releasing the fastening with the locking piece 660. It includes a guard frame locking means (700) that makes it possible.

In addition, the guard frame locking means 700 has a rear end rotatably connected to the support frame 620 with a pin 702, a front end formed with a hook, and a locking piece of the guard frame 610 adjacent to the outside. A fastening bar 710 that is fastened by the hook being caught on 660; And it extends from one side of the fastening bar 710 to the upper side of the fastening bar 710, and is rotated backward by the pressing force of the blocking plate 630 to separate the fastening bar 710 from the stopping piece 660 to guard. It includes a support bar 720 that allows the frame 610 to move rearward and, after being rotated rearward, returns to its original position together with the fastening bar 710 by the elastic restoring force of the elastic spring.

In addition, the guard frame locking means 700 has a rear end rotatably connected to the support frame 620 with a pin 702, a front end formed with a hook, and a locking piece of the guard frame 610 adjacent to the outside. A fastening bar 710 that is fastened by the hook being caught on 660; and a connecting bar 730 connected to the pin 702 and rotating forward and backward to rotate the fastening bar 710 up and down. And disposed in the longitudinal direction of the guard frame 610, the lower part of the connecting bar 730 is connected to one side, and one end is connected to the elastic spring connected to the rear end of the guard frame 610 to the rear of the support frame 620. It includes an operating bar 740 that is connected and rotates the connecting bar 730 forward by pulling so that the hook of the fastening bar 710 is released from the locking piece 660.

As shown in Figures 1 to 7, the chair backrest rotation control device (A) according to the present invention includes a fixing bracket 100 to which the backrest 1a of the chair 1 is rotatably connected; A locking member ( 200); and an elastic spring 20 that presses the locking member 200 by elastic force so that it is fastened to the backrest bracket 10.

The fixing bracket 100 is for fixing the bleacher chair 1 to each bleacher end S, and includes a first fixing part 110 to which the backrest 1a of the chair 1 is rotatably connected; and a second fixing part 120 to which the seat 1b of the chair 1 is rotatably connected, and is fixed to the front end of the audience stage S, wherein the first fixing part 110 is attached to the audience stage S. It is fixed to the horizontal surface (Sh) of (S), and the second fixing part 120 is fixed to the vertical surface (Sv) of the audience stage (S). The first fixing part 110 and the second fixing part 120 may be formed as one piece or may be formed to be separable, and may be formed on either the horizontal surface (Sh) or the vertical surface (Sv) of the spectator stage (S). It can be fixed integrally.

The viewing platform (S) is provided with a plurality of chairs (1) at the front end, and a plurality of viewing platforms (S1, S2, S3) are spread out in a stepwise manner, or each unfolded viewing platform (S1, S2, S3) is directly above. A guard frame 610 that moves the spectator seats (S) in the front and rear directions as a retractable spectator seat stored below the spectator seats (S); A support frame 620 formed at the rear end of the guard frame 610 in the upper and lower directions; and a viewing platform (S) formed at the rear end of the spectator platform (S), connected to the support frame (620) so that the spectator platform (S) moves integrally with the guard frame (610), and spaced upward and downward. It may include a blocking plate 630 disposed in the space between them.

The first fixing part 110 is formed in a "∪"-shaped cross section with an open top, and is formed with a predetermined length in the front and rear directions, and the rear end is fixed to the horizontal surface (Sh) of the spectator edge (S) with a bolt. In the rear part, a backrest bracket 10 connected to the chair backrest 1a is rotatably connected by a pin 702 or an axis, and a lock, which will be described later, is attached to the bottom surface of the front end protruding forward from the audience stage S. A guide hole 111 in which the member 200 is disposed is formed. In addition, at the rear end of the first fixing part 110, there is a device that reduces the rotational speed of the chair backrest 1a when the chair backrest 1a is unfolded and laid down by rotation on the horizontal surface Sh of the spectator stand S. A damper member 500 is provided.

The damper member 500 is a rod that is pulled out from the cylinder and is slowly inserted into the cylinder by the hydraulic pressure of the cylinder. The damper member 500 is installed on the rear side of the first fixing part 110, and the lower end of the rod is attached to the first fixing part. It is rotatably connected to the rear of the backrest bracket 10 at (110), and the upper cylinder is connected to the upper part of the backrest bracket 10. And when the backrest (1a) is erected and rotated to the horizontal surface (Sh) of the spectator stand (S) and unfolded, the rod is slowly inserted into the cylinder and the drawn-out length gradually becomes shorter.

The backrest bracket 10 is connected to the left and right sides of the chair backrest 1a, and has an arm rest 12 rotatably provided at the upper part, and a first fixing part 110 of the fixing bracket 100 at the lower part. It is rotatably connected to the front, and a locking hole 11 is formed at the lower part of the front into which the hook projection 210 of the locking member 200, which will be described later, is fastened.

The second fixing part 120 is formed in the lower part of the first fixing part 110, and a guide groove 121 communicating upward and downward with the guide hole 111 is formed.

The guide groove 121 is formed in a circular shape corresponding to the circular rotating part 230 formed in the lower part of the locking member 200, and the rotating part 230 is rotatably seated or inserted inside, and one side This opened first space portion 121a; And the body of the locking member 200, which is formed between the first space 121a and the guide hole 111, the bottom of which slopes upward toward the tip, and connects the hook projection 210 and the rotating portion 230. (220) includes a second space portion 121b moving inside.

The first space 121a is formed in the same circular shape as the circular rotating part 230 formed in the lower part of the locking member 200, and the second space 121b is formed by the first space 121a and the second space 121b. 1 In the space formed between the guide holes 111 of the fixing part 110, the body 220 of the locking member 200 rotates and moves internally in the forward and backward directions.

In addition, the second fixing part 200 may protrude in front of the first fixing part 110, and a seat connecting member 125 to which the seat plate 1b of the chair is rotatably connected may be provided at the front end. A fastening piece 123 is formed at the rear end, which is bolted to the vertical surface Sv of the step-shaped seating area S.

That is, the fixing bracket 100 is fixed to the step of the audience stage (S), the rear end of the first fixing part 110 is fixed to the horizontal surface (Sh) of the audience stage (S), and the second fixing bracket 100 is fixed to the step of the audience stage (S). The top 120 is bolted to the vertical surface Sv of the spectator platform S, which is bent at one end of the horizontal surface Sh, by the fastening piece 123.

Meanwhile, the chair backrest 1a is maintained in an upright state by the locking member 200 provided inside the fixing bracket 100 or is rotatable so that it can be unfolded.

The locking member 200 may be formed approximately in the shape of a “6” or a key, and has a hook protrusion 210 fastened to the locking hole 11 of the backrest bracket 10 formed at the top, and a hook protrusion 210 fastened to the locking hole 11 of the backrest bracket 10. 2 A circular rotating part 230 is formed that is inserted into the first space 121a and rotates in the guide groove 121 of the fixing part 120, and a predetermined length is formed between the hook projection 210 and the rotating part 230. A body 220 is formed.

The hook projection 210 of the locking member 200 rotates and is fastened to or separated from the locking hole 11, so that the chair backrest 1a is fixed in an upright state or can be rotated.

The hook protrusion 210 is inserted into the locking hole 11 and caught on the inner surface of the backrest bracket 10, or has a ring or groove into which the hook protrusion 210 can be fastened instead of the locking hole 11. can be formed.

In addition, a hook protrusion 210 is formed on one side of the upper part of the locking member 200, and a fastening protrusion to which an elastic spring 20 is connected is formed on the other side opposite to the hook protrusion 210. In addition, the upper end of the elastic spring 20 may be connected to the fastening protrusion of the locking member 200, and the lower end may be fixed to the bottom surface of the first fixing part 110. A fastening protrusion may be formed on the bottom surface of the first fixing part 110 into which the elastic spring 20 can be inserted and fixed, and both ends of the elastic spring 20 are connected to the locking member 200 by a joining method such as welding. ) and may be connected to the first fixing part 110.

Accordingly, the hook protrusion 210 of the locking member 200 can remain fastened to the locking hole 11 without being separated from the locking hole 11 by the elastic spring 20, and as a result, the backrest 1a ) is maintained in its erected state.

Additionally, in addition to the elastic spring 20, a synthetic resin product that can be restored to its original state by elastic restoring force after its shape is deformed may be replaced in place of the elastic spring 20.

In a state where the hook projection 210 of the locking member 200 is fastened to the locking hole 11 by the elastic spring 20, the manager manually pulls the hook projection 210 in the direction of the elastic spring 20. It can be separated from the locking hole 11, and at this time, the backrest 1b is in a rotatable state.

Additionally, the locking member 200 may have a projection or handle formed on the side of the rotating portion 230 or the hook projection 210, and the hook projection 210 may be rotated by gripping the projection or handle.

Additionally, the locking member 200 may have a first through hole 231 formed in the rotating part 230, and a rotating shaft 300 may be inserted into the first through hole 231.

The locking member 200 may rotate the upper hook projection 210 as the rotating portion 230 rotates in the first space 121a upon rotation of the rotating shaft 300 inserted into the first through hole 231. The hook protrusion 210, which was inserted into the locking hole 11 and hung on the inner surface of the backrest bracket 10, falls out of the locking hole 11 by rotation and is separated from the backrest bracket 10, thereby forming the backrest 1a. ) can be rotated backwards and unfolded.

That is, with the hook protrusion 210 of the locking member 200 fastened to the locking hole 11, when the rotation axis 300 is rotated clockwise (as shown in the drawing), the hook protrusion 210 rotates to lock the backrest bracket. After being separated from the locking hole 11 of (10), the backrest 1a is rotatable, and the backrest 1a is rotated by a predetermined angle, the hook projection 210 is moved again by the elastic spring 20. It returns to its original position, and as the hook projection 210 returns, the rotation axis 300 also returns to its original state.

The first through hole 231 is preferably formed in a triangular, square, or pentagonal cross section with at least three sides, and the rotation axis 300 has a cross section corresponding to the shape of the first through hole 231. It is formed, and as a result, the rotating part 230 is rotated integrally by the rotation of the rotating shaft 300.

In addition, when the rotating part 230 of the locking member 200 is formed in the shape of a disk without the first through hole 231, it is installed on one side of the rotating part 230 so that the rotating part 230 can be rotated by an external force. It may be formed by welding protrusions, axes, etc.

The elastic spring 20 presses the hook protrusion 210 in the direction of the backrest bracket 10, and the upper part is connected to the opposite side of the hook protrusion 210 of the locking member 200, and the lower part is connected to the first fixing part ( 110) is fixed to the bottom. A fastening protrusion to which the elastic spring 20 is fastened may be formed on the upper part of the locking member 200. Therefore, after the hook protrusion 210 is separated from the locking hole 11 by rotation of the rotation shaft 300, it returns to its original position where it was hung on the locking hole 11 by the elastic restoring force of the elastic spring 20.

In addition, on the outside of the guide groove 121, there is a support piece that supports the rotating part 230 of the locking member 200 so that it does not shake left and right, and prevents the rotating part 230 from being separated or separated from the guide groove 121. (400) is prepared.

The support piece 400 may be disposed on at least one side of the left or right side of the first space 121a of the guide groove 121 and is larger than the first space 121a of the guide groove 121. It is formed in an area to block the left or/and right side of the first space 121a, and a second through hole 410 through which the rotation shaft 300 passes is formed inside, and is connected to the rotation shaft 300 with a bolt. do.

Next, with reference to FIGS. 5 and 6, a preferred embodiment of the backrest rotation control device (A) according to the present invention will be described in detail.

When using the chair (1), the backrest (1a) is raised so that the hook protrusion (210) of the locking member (200) is fastened to the locking hole (11) of the backrest bracket (10), which causes the backrest (1a) of the chair (1) to be (1a) remains erect. At this time, the hook protrusion 210 of the locking member 200 is pressed in the direction of the backrest bracket 10 by the elastic force of the elastic spring 20, so that the hook protrusion 210 is not separated from the catching hole 11, and the second The body 220 is caught at the rear end of the catching portion 122 or the guide hole 111 formed on one upper side of the space 121b and is fixed without moving any further in the direction of the backrest bracket 10.

In addition, when the backrest (1a) of the chair (1) needs to be rotated to the horizontal surface (Sh) of the audience stage (S) and unfolded parallel to the horizontal surface (Sh), the rotation axis (300) inserted into the locking member (200) is connected to the elastic spring ( 20), the hook projection 210 of the locking member 200 is separated from the locking hole 11.

The locking member 200 has a rotating part 230 that rotates around the rotating axis 300, and the body 220 of the locking member 200 rotates in the second space 121b of the guide groove 121, and the hook The protrusion 210 rotates in the direction of the elastic spring 20 and is separated from the locking hole 11.

After the hook projection 210 is separated from the locking hole 11 by rotating the rotation axis 300, the backrest 1a is rotated in the direction of the horizontal surface Sh of the spectator stand S, and then the rotation axis 300 And the hook projection 210 returns to its original position by the elastic restoring force of the elastic spring 20.

The chair backrest (1a) can be rotated by the backrest bracket (10) from which the hook protrusion (210) is separated, so that it can be easily unfolded on the horizontal surface (Sh) or floor of the audience stage (S), and at this time, the backrest bracket (10) The backrest (1a) rotates slowly as it approaches the horizontal surface (Sh) of the audience stage (S) due to the damper member 500 provided at the lower end of.

And when the backrest 1a needs to be re-erected, the backrest 1a is erected without rotating the rotation axis 300 and the locking hole 11 is fastened to the hook projection 210. That is, the hook projection 210 is returned to its original position by the elastic restoring force of the elastic spring 20, so that the backrest bracket 10 is erected and the hook projection 210 is inserted into the locking hole 11.

In addition, as shown in FIG. 7, a cover 130 may be mounted on the distal end of the first fixing part 110, and the cover 130 prevents foreign substances from entering the first fixing part 110. This has the effect of preventing the locking member 200 and the elastic spring 20 from being exposed to the outside while protecting them from the outside.

In addition, at least two chairs (1) to which the rotation control device (A) of the present invention is applied can be installed in one spectator stage (S) in a row at the front end of the spectator stage (S), and one rotation axis (300) can be sequentially inserted through the first through hole 231 of the rotation control device (A) installed on each chair (1), and the rotation of the rotation axis (300) causes the rotation of each chair (1). The hook projections 210 are simultaneously separated from the locking holes 11 of each backrest bracket 10, so that the backrests 1a of multiple chairs 1 can rotate simultaneously.

The locking member 200 may be rotated by a rotating means such as a motor in addition to the rotating shaft 300, and may be rotated by controlling the rotating means using a network of a computer or smartphone.

Figures 8 and 9 show an embodiment of a retractable bleacher system having a chair (1) to which the rotation control device (A) of the present invention is applied. A plurality of seats are installed, and a plurality of spectator seats (S) are spread out in the form of stairs, or each unfolded spectator platform (S) is stored under the directly upper spectator stage (S), and the rotation control of the present invention is applied to the chair (1). When the device (A) is applied, the hook projection 210 is separated from the catching hole 11, and the backrest 1a can be unfolded and easily stored between the spectator seats S.

In addition, the retractable bleacher system of the present invention is provided with a plurality of bleachers (S) on which a plurality of chairs (1) are installed, and each spectator platform (S) where the plurality of bleachers (S) are spread out or spread out in a stepped manner. A guard frame 610 that is stored below the upper spectator stage (S) and moves the spectator stage (S) in the front and rear directions; A support frame 620 formed at the rear end of the guard frame 610 in the upper and lower directions; and is formed at the rear end of the spectator stage (S), is connected to the support frame 620 to allow the spectator stage (S) to move integrally with the guard frame 610, and is between the spectator stage (S) spaced apart up and down. Includes a blocking plate 630 disposed in the space.

The guard frame 610 moves the spectator stand (S) in the front and rear directions and moves along the ground by the roller 611. In addition, a gap maintenance roller (not shown) may be provided on the side of the guard frame 610 to smoothly extract or store each spectator stage (S) while maintaining the gap between the guard frames 610.

In addition, the support frame 620 is erected in the upper and lower directions at the rear end of the guard frame 610, and is connected to the spectator stand (S).

The spectator stage (S) may be directly connected to and fixed to the support frame 620, and may be fixed to the support frame 620 by a blocking plate 630 disposed between the upper and lower audience stage (S). You can. That is, a blocking plate 630 provided at the rear end of the spectator stand (S) is connected to the upper part of the support frame 620, and thereby the spectator edge can be fixed to the support frame 620.

The length of the support frame 620 varies depending on the position of each spectator stage (S1, S2, and S3) arranged at a predetermined distance above and below. In other words, the length of the support frame 620 that secures the audience stage (S1) placed at the bottom may be the shortest, and the length of the support frame 620 connected to the audience stage (S3) on the top floor may be formed as the longest. there is.

On the other hand, in the retractable bleacher system of the present invention, when the bleacher stage (S) is pulled out and spread out in the form of stairs, the guard frame 610 moves rearward and locks the spectator stage (S) to prevent it from being stored, or a guard frame ( Guard frame locking means (700) for unlocking the locking state (610) to enable movement of the guard frame (610); and a stopper 800 that prevents the spectator stage from being pulled out any further after the spectator stage (S) is pulled out and unfolded in the form of stairs.

The retractable bleacher system of the present invention includes a locking piece 660 protruding inward from the front end of the guard frame 610; And when the rear end is rotatably connected to the support frame 620, returns to the original position by the elastic restoring force of the elastic spring 703 after rotation, and the guard frame 610 moves forward and the spectator section is pulled out, The guard frame 610 is fastened to the locking piece 660 of the guard frame 610 adjacent to the outside to prevent it from moving backward, or the guard frame 610 is unfastened with the locking piece 660. ) includes a guard frame locking means (700) that allows the guard frame to move forward and backward.

The locking piece 660 protrudes in the direction of the inner guard frame 610 from the front end of the plurality of guard frames 610 arranged side by side in the left and right directions, and has one end connected to the guard frame 610 and the other end. The end portion is bent toward the upper side of the guard frame 610, extended to a predetermined length, and then bent once more to be parallel to the ground. That is, the other end of the locking piece 660 is bent in an “L” shape in the direction of the inner guard frame 610.

And a bush 670 having a through hole is installed at the lower part of the other end of the locking piece 660 protruding inside the guard frame 610, and the guard frame 610 is slidably moved through the through hole of the bush 670. The guide bar 670 penetrates. The bush 670 has the effect of preventing wear of the guide bar 670 and smoothing the sliding movement of the guide bar 670, thereby facilitating the movement of the guard frame 610.

The guard frame locking means 700 is rotatably connected to the support frame 620, and after being rotated, it returns to its original position by the elastic restoring force of the elastic spring, and the guard frame 610 moves forward to secure the spectator seat. When the stage (S) is pulled out, it is fastened to the locking piece 660 of the guard frame 610 adjacent to the outside to prevent the drawn guard frame 610 from moving rearward, and by rotating the locking piece ( The connection with 660 is released, allowing the guard frame 610 to move in the forward and backward directions.

The guard frame locking means 700 may be formed differently in that it is applied to the lowest-floor spectator seating section S1 and that it is applied to the remaining spectator seating sections excluding the lowest-floor spectator seating platform.

The above-described guard frame locking means 700 may be applied to the guard frame locking means 700 applied to the plurality of spectator seats S2 and S3 except for the spectator seat S1 on the lowest floor.

That is, as shown in FIGS. 11 and 12, the guard frame locking means 700 applied to the spectator seats S2 and S3 disposed above the lowest floor spectator platform S1 has a rear end of the support frame 620. ) is rotatably connected to the pin 702, the distal end is formed with a ring-shaped hook 711, and the hook 711 is fastened to the locking piece 660 of the guard frame 610 adjacent to the outside. fastening bar (710); And it extends from one side of the fastening bar 710 to the upper side of the fastening bar 710, and is rotated and tilted backward by the pressing force of the blocking plate 630 to separate the fastening bar 710 from the stopping piece 660. It includes a support bar 720 that enables the guard frame 610 to move, and rotates backward and then returns to its original position together with the fastening bar 710 by the elastic restoring force of the elastic spring.

The guard frame locking means 700 includes a fastening bar 710 on which a ring-shaped hook 711 is formed and a support bar 720 extending from one side of the fastening bar 710 facing forward with a sign "∠" or It is formed to spread out in the shape of "<" and returns to its original position after being rotated rearward by a predetermined angle by an elastic spring, and is fastened when the guard frame 610 moves forward to extract the spectator seats (S2, S3). The hook 711 of the bar 710 is hung on the tip of the locking piece 660 of the guard frame 610 adjacent to the outside to lock the guard frame 610 from moving rearward, and the spectator stand (S2) When the guard frame 610 needs to be moved rearward to accommodate S3), the blocking plate 630 of the lower seating area S1 pushes the support bar 720, and the support bar 720 rotates. As it is tilted backward, the fastening bar 710 is separated from the locking piece 660, thereby unlocking the guard frame 610.

The blocking plate 630 is formed on the back, is connected to the support frame 620, and supports the guard frame locking means 700 when the guard frame 610 moves backwards to accommodate the spectator seating area (S). It includes a horizontal bar 650 that pressurizes the bar 720 to rotate the guard frame locking means 700.

In addition, a curved guide hole 701 having length in the upper and lower directions is formed at the rear end of the guard frame locking means 700, and a guide hole 701 that moves along the guide hole 701 is provided in the support frame 620. A protrusion 621 may be formed, and may be rotated by the length of the guide hole 701 when the guard frame locking means 700 is rotated.

The elastic spring may be connected to the guard frame 610 and the guard frame locking means 700, and pulls the guard frame locking means 700 downward by the elastic restoring force, and the guard frame locking means 700 may be connected to the guard frame locking means 700 by the elastic restoring force. It tries to rotate downward by the spring, and the guide protrusion 621 moves to the lower part inside the guide hole 701 when the fastening bar 710 is separated from the locking piece 660, and then the elastic restoring force of the elastic spring It will move to the upper part of the guide hole 701 again.

And, as shown in FIG. 12, the guard frame locking means 700 applied to the lowest-floor spectator stand (S1) has its rear end rotatably connected to the support frame 620 with a pin 702, and its front end with a hook ( 711) is formed, and the hook 711 is fastened to the locking piece 660 of the guard frame 610 adjacent to the outside (710); and a connecting bar 730 connected to the pin 702 and rotating the fastening bar 710 upward and downward by rotating forward and backward. And an elastic spring 703 disposed in the longitudinal direction of the guard frame 610, with the lower part of the connecting bar 730 connected to one side, and connected to the rear end of the guard frame 610 to the rear of the support frame 620. ), one end of which is connected to the operating bar 740, and the connecting bar 730 is rotated forward by pulling so that the hook 711 of the fastening bar 710 is disengaged from the locking piece 660; Includes.

In other words, the guard frame locking means 700 applied to the lowest-floor spectator platform (S1) cannot be rotated by the blocking plate 630 of the lower-tier spectator platform (S) because there is no spectator platform (S) on the lower side. The guard frame 610 must be locked or unlocked by directly operating the guard frame locking means 700, and the lowest floor spectator section (S1) is pulled out and the fastening bar 710 of the guard frame locking means 700 is locked. In the state fastened to 660), when the manager pulls the operating bar 740 of the lowest floor spectator section (S1), the lower part of the connecting bar 730 rotates forward, which causes the hook 711 of the fastening bar 710 As the is lifted, the fastening with the locking piece 660 is released.

The method of locking the guard frame locking means 700 of the lowest-tier spectator section S1 is applied in the same manner as the method of locking the guard frame 610 of the upper-level audience members S2 and S3 described above.

When you want to pull out the audience seats (S) and spread them out in the form of stairs, the lowest level audience members (S1) are pulled out to the front so that all the audience seats (S) are spread out in the form of stairs, and the support frame of each audience section (S) is As the fastening portion of the guard frame locking means 700 provided at 620 is hooked and fastened to the locking piece 660, each viewing platform S that has been stacked or stored upward and downward is spread out in the form of steps and fixed.

And when it is desired to store or retract each spectator stage (S), the backrest (1a) is rotated to the horizontal surface (Sv) of the spectator stage (S) using the rotation control device (A) provided on the chair (1) and unfolded. , the manager first unlocks the guard frame locking means 700 and the locking piece 660 of the lowest-floor spectator stand (S1) by pulling the operating bar 740 of the lowest-floor spectator stand (S1), and then the lowest-floor spectator stand (S1) S1) is pushed rearward so that it can be stored or retracted into the lower part of the upper-floor audience stage (S2), and the guard frame locking means 700 of the second-floor audience stage (S2) moves backwards to the blocking plate (630) of the lowest-floor audience stage (S1). By rotating and unlocking from the locking piece 660 by the horizontal bar 650 formed on the back, the movement of the second floor audience stage (S2) is possible, and then 3 placed on the upper part of the second floor audience stage (S2) The guard frame locking means (S3) of the second floor is also secured by a horizontal bar 650 formed on the back of the blocking plate 630 of the second floor audience stage (S2), which moves backwards in the same way as the second floor audience stage (S2). 700) rotates and is separated from the locking piece 660.

On the other hand, as shown in FIG. 12, the present invention, when the blocking plate 630 provided at the rear end of the lower-level spectator stage (S) is pulled out to the front end of the upper-level spectator stage (S), the spectator stage (S) It includes a stopper 800 that prevents it from being pulled out any further and causes the upper seating section (S) to be pulled out forward.

The stopper 800 has an upper portion that protrudes from the blocking plate 630 to the upper side of the blocking plate 630 and is caught on the vertical surface of the tip of the upper seating section S, causing the upper seating section S to be pulled forward, and After the stage (S) is completely pulled out, the spectator stage (S) is no longer pulled forward, so that the upper part can be formed in a straight (I) or “ㄴ” shape.

In addition, the present invention further includes a vertical bar 640 formed on the rear surface of the blocking plate 630 and having a fixing hole on the top of which the fixing bolt 802 is fastened.

And the stopper 800 is coupled to the upper part of the vertical bar 640 so as to be movable in the upward and downward directions, and is formed on one side to have a predetermined length in the vertical direction and has an adjustment hole 801 to which a fixing bolt 802 is fastened. ) is formed.

That is, when the stopper 800 is coupled to the upper part of the vertical bar 640, the protruding length of the stopper 800 protruding from the upper part of the blocking plate 630 is adjusted, and then the fixing bolt 802 is adjusted through the adjustment hole. (801) and fasten to the fixing hole sequentially.

Therefore, there is an effect of easily adjusting the protrusion length of the stopper 800 protruding from the upper part of the blocking plate 630 by the fixing hole, the adjusting hole 801, and the fixing bolt 802.

The present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

1: Chair 1a: Backrest
1b: Seat plate 10: Backrest bracket
11: Locking hole 12: Arm support part
100: fixing bracket 110: first fixing part
111: Guide ball 120: Second fixing part
121: Guide groove 121a: First space part
121b: second space 130: cover
200: Locking member 210: Hook projection
220: body 230: rotating part
231: first through hole 300: rotation axis
400: Support piece 410: Second through hole
500: Damper member 610: Guard frame
620: Support frame 630: Blocking plate
640: vertical bar 650: horizontal bar
660: Locking piece 670: Bush
680: Guide bar 700: Guard frame locking means
710: fastening bar 711: hook
720: support bar 730: connection bar
740: operating bar 800: stopper
A: Rotation control device S: Audience stand

Claims (9)

A plurality of chairs (1) with backrests (1a) foldable by the rotation control device (A) are installed on the spectator seats (S), and a plurality of spectator seats (S) are spread out or unfolded in a step shape at each audience stage. In the retractable bleacher system where (S) is stored below the upper bleacher stage (S),
The rotation control device (A),
A backrest bracket (10) connected to the chair backrest (1a) and having a catching hole (11) at the bottom;
A first fixing part 110 to which the backrest bracket 10 is rotatably connected is formed, and a second fixing part 120 having a guide groove 121 is formed in the lower part of the first fixing part 110. A fixing bracket (100);
The rotating part 230 is rotatably seated in the guide groove 121, and a hook projection 210 is fastened to the locking hole 11 of the backrest bracket 10 to maintain the backrest 1a in an upright state. A locking member 200 formed on the upper part of the rotating part 230 and separating the hook protrusion 210 from the locking hole 11 by rotation to enable rotation of the backrest 1a; and
The fixing bracket 100 is disposed in front of the locking member 200, and one end is connected to the opposite side of the hook projection 210 of the locking member 200 to prevent the hook projection 210 from being separated from the locking hole 11. An elastic spring (20) that pressurizes the hook protrusion (210) separated from the locking hole (11) to its original position by elastic force so that it is not damaged, and includes a backrest rotation control device. Bleacher system.
According to paragraph 1,
A guard frame (610) that moves the spectator stand (S) in the front and rear directions;
A support frame 620 formed at the rear end of the guard frame 610 in the upper and lower directions; and
A retractable type equipped with a backrest rotation control device, characterized in that it includes a blocking plate 630 formed at the rear end of the spectator stage (S) and disposed in the space between the spectator stage (S) spaced upward and downward. Bleacher system.
According to claim 1 or 2,
A locking piece 660 protruding from the front end of the guard frame 610 toward the inside of the spectator area (S); and
The rear end is rotatably connected to the support frame 620, and after rotation, it returns to its original position by the elastic restoring force of the elastic spring, and when the guard frame 610 moves forward and the spectator stage (S) is pulled out, it moves outward. It is fastened to the locking piece 660 of the adjacent guard frame 610 to prevent the drawn out guard frame 610 from moving backward, and the guard frame 610 is released by releasing the fastening with the locking piece 660. A retractable bleacher system equipped with a backrest rotation control device, characterized in that it includes a guard frame locking means (700) enabling movement.
According to paragraph 3,
The guard frame locking means 700 is,
The rear end is rotatably connected to the support frame 620 with a pin 702, the front end is formed with a hook 711, and the hook 711 is attached to the locking piece 660 of the guard frame 610 adjacent to the outside. A fastening bar 710 that is fastened by hanging; and
It extends from one side of the fastening bar 710 to the upper side of the fastening bar 710, and rotates by the pressing force of the blocking plate 630 to separate the hook 711 from the stopping piece 660, and after rotation, the hook 711 is elastic. A retractable bleacher system equipped with a backrest rotation control device, comprising a support bar (720) that returns to its original position together with the fastening bar (710) by the elastic restoring force of the spring.
According to paragraph 3,
The guard frame locking means 700 is,
The rear end is rotatably connected to the support frame 620 with a pin 702, the front end is formed with a hook 711, and the hook 711 is attached to the locking piece 660 of the guard frame 610 adjacent to the outside. A fastening bar 710 that is fastened by hanging; and
A connecting bar 730 connected to the pin 702 and rotating integrally with the fastening bar 710; and
It is disposed in the longitudinal direction of the guard frame 610, the connecting bar 730 is connected to one side, and an elastic spring 703 is connected to the rear end of the guard frame 610 to the rear of the support frame 620. An operating bar 740 that is connected to one end and rotates the connecting bar 730 by pulling so that the hook 711 of the fastening bar 710 is separated from the locking piece 660. A retractable bleacher system equipped with a backrest rotation control device.
According to claim 1 or 2,
It protrudes from the blocking plate 630 to the upper side of the blocking plate 630 and hangs on the tip of the upper seating section (S) to prevent the lower seating section (S), which has been drawn out in front of the upper seating section (S), from being pulled out any further. A retractable bleacher system equipped with a backrest rotation control device, characterized in that it includes a stopper (800).
According to clause 6,
It includes a vertical bar 640 formed on the back of the blocking plate 630 and having a fixing hole at the upper part into which a fixing bolt 802 is fastened,
The stopper 800 is,
It is coupled to the upper part of the vertical bar 640 so as to be movable in the up and down directions, and an adjusting hole 801 having a length in the up and down directions and into which the fixing bolt 802 is fastened is formed on one side of the vertical bar 640. Storage equipped with a rotation control device, characterized in that the protruding length protruding from the upper part of the blocking plate 630 to the upper side of the blocking plate 630 is adjusted and then fixed to the upper part of the vertical bar 640 by a fixing bolt 802. Grandstand system.
According to paragraph 1,
A first through hole 231 formed in the rotating part 230 of the locking member 200; and
It is inserted into the first through hole 231 of the locking member 200, rotates integrally with the locking member 200, and separates the hook protrusion 210 from the catching hole 11 by rotation to secure the backrest. A retractable bleacher system equipped with a rotation control device, characterized in that it includes a rotation axis 300 that allows rotation of (1a).
According to claim 1 or 8,
A plurality of chairs (1) are arranged in a row on the spectator stage (S), and one rotation axis (300) is sequentially inserted into the first through hole (231) provided in each chair (1), and the rotation axis (300) A retractable bleacher system equipped with a rotation control device, characterized in that the hook protrusion (210) of each chair (1) is simultaneously separated from the locking hole (11) of each backrest bracket (10) by rotation.

Images