JPH0240195Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an intermediate drawer stopper for a retractable stepped bleacher.

[Conventional technology]

In recent years, in order to use the interior of gymnasiums for multiple purposes, it has become common for gymnasiums to install retractable and movable tiered seats on a portion of the floor near the wall. Although not shown, each movable platform from the first movable platform to the highest movable platform is connected to each other under multiple stages that increase in height, and expands and contracts in the front and rear direction. It is formed so that it can be moved by. When these seats are in use, they are pulled out in sequence starting with the lowest movable platform at the front, extending the entire structure into a dais-like structure, and thereby the connected folding chairs on each of the movable platforms are erected in large numbers. It can be used as a bleacher seating area for spectators. In addition, when the above-mentioned connected chairs are folded inverted, each movable floor table becomes flat individually, and the flattened movable table table can be used for exhibitions, sculpture exhibitions, product exhibitions, spot sales, fashion shows, etc. It can be used for multiple purposes as a display stand for things such as showcasing. Furthermore, when the bleachers are not in use, each movable platform is retracted with the connected chairs of each tier folded, starting from the movable platform at the very front and moving back to the bottom of the movable platform at the highest tier. By moving it, the entire structure is reduced to a vertical shelf under the highest movable platform, which allows it to be stored in a storage recess provided on the wall side of the building. Ta.

[Problem that the invention attempts to solve]

Due to the above-mentioned configuration, the conventional telescoping staircase-like bleachers have the following problems.

(1) When using the bleachers, the amount of pullout of the movable platform on each tier is constant, so when the above-mentioned bleachers are used as the above-mentioned exhibition stand, there is little change in each tier and the display is rich in variety. was difficult.

(2) Furthermore, even if an attempt was made to use the above-mentioned bleachers for purposes other than the above-mentioned bleachers or exhibition stands by taking advantage of their telescoping properties, this could not be realized due to the limited amount of drawers.

[Means for solving problems]

This invention solves the above-mentioned problems of the prior art, and allows the movable bed platform at each stage to be drawn out in its entirety, as well as in part by individual settings. By changing the drawer amount of each movable platform according to the purpose, we provide an intermediate drawer stopper for retractable tiered bleachers that can be used for a variety of exhibitions and for other purposes besides bleachers and exhibition stands. It's about doing. The feature of this device is that when the movable bed is in use, the movable bed is arranged in a stair-like manner, and when it is not in use, the low movable bed is sequentially stored in the form of a shelf below the adjacent high movable bed. The movable bed bases are connected to each other via a pair of bases each having a support roller that supports each movable bed base via a support, and the frontmost (lowest stage) base is In a retractable stair-shaped bleachers, in which a fixed stopper is provided at the front end of each base, except for the front end of the base, which comes into contact with the support of an adjacent low movable base to set the entire drawer of the movable base, At the midway position of each base except for
A free stopper is provided which can be selectively set to a contact position where it protrudes into the path of a support column that supports the movable platform located at the front stage and comes into contact with the advancing support column, or a non-contact position outside the path of the support column. be.

[Effect]

When using the bleachers with the above configuration as regular bleachers that also include chairs, by sequentially pulling out the movable platform at the lowest and foremost level, the entire structure can be extended into a dais-like shape, allowing each chair to hold a large number of seats. It can be used as a uniform seating area where each audience member can sit. In addition, when the above-mentioned seats are used as exhibition stands with different floor areas, the free stoppers provided in the middle of each base can be selectively set to the contact position or non-contact position before the drawers are pulled out. I'll keep it. At the position of the free stopper set to the non-contact position, the base on the adjacent front stage side passes in the forward direction without being restrained by the free stopper, so the movable platform at the front stage at this position is pulled out in its entirety. It turns out. However, at the position of the free stopper set to the abutment position, the support on the adjacent front stage side that has advanced to this position comes into contact with the free stopper, so the base on the adjacent front stage side, that is, the movable platform, is partially pulled out. be done. In this way, each movable platform can be changed into an exhibition stand with all drawers or a partial drawer depending on the purpose, and a variety of exhibitions can be realized. In addition, after using the above-mentioned seats, with the connected chairs in each tier folded, move them backwards, starting from the movable platform in the first tier and returning them to the bottom of the movable platform in the last tier, contrary to the above. By doing so, the entire structure is reduced to a vertical shelf under the highest movable floor stand, so that the entire structure can be stored in a storage recess provided on the wall side of the building.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in Figure 1 with a part of it (base 1, roller 2, support 3, mooring plate 4), when in use, the entire bleacher seat (not shown) is moved from the storage recess on the rear wall side to the floor surface in front A. At the bottom, each movable platform (not shown) is supported via its support 3 for upward movement and for movement backward from this floor surface into a rear storage recess when not in use. The left and right pairs of bases 1 each having support rollers 2 are arranged in order of height such that the one supporting the lower movable bed is located on the inside, and the one supporting the higher movable bed is located on the outside. A fixed stopper 6 is provided at the front end of each base 1 except for the front stage, which abuts against the support 3 on the adjacent front stage side and sets the entire amount of the movable bed base on the adjacent front stage side to be drawn out. In addition, on the outer surface of the base end of each support column 3, the fixed stopper 6 provided on the base 1 on the adjacent rear stage side or the free stopper 9 similarly provided on the same base 1 is selectively engaged, and the adjacent A mooring plate 4 that integrally connects the bases 1 to each other is rotatably attached by a pin 13. From the front end to the middle of each base 1 except for the front stage, there are intermediate drawer stoppers mainly consisting of a free stopper 9 that selectively sets the amount of draw of a part of the movable platform located immediately in front of each stage. C is arranged as follows.

As shown in FIGS. 2, 4, and 5, the intermediate drawer stopper C described above is constructed as follows. That is, a vertically long rectangular support plate 5 having a hole 5a at the upper end is welded to the front end surface of the base 1 provided with the fixed stopper 6, and a support plate 5 is welded to the top surface of the base 1 on the extension of the hole 5a. A tube 7 to which legs 7a are welded is installed in a horizontal position concentric with the hole 5a, and a male screw 8a is formed at the tip of a long shaft within this tube 7, and a rectangular free screw is formed on the rear shaft. A rod 8 with a stopper 9 fitted perpendicularly to the shaft inserts the male screw 8a from the tip of the tube 7 into the hole 5a of the support plate 5, and the male screw 8a is inserted into the hole 5a of the support plate 5. An L-shaped lever 10 is screwed together from the outside of the lever 5, and a nut 12 is tightened between the two so that when the lever 10 swings from side to side, the free stopper 9 can also swing together. The rear shaft end of Rod 8 is
The free stopper 9 has stoppers 11a and 11b that restrict the range of rotation, and is rotatably supported by the bearing hole of a rod receiver 11 fixed to the top surface of the base 1 with screws, excluding the first stage. It is composed of intermediate drawer stoppers C of a bundle on each base 1 of the position. Note that L shown in FIG. 4 is a drawer adjustment amount for lowering the free stopper 9 to change the setting of the movable platform (not shown) from the previous full drawer state to a partial drawer state.

With the above configuration, each base 1 at the position except the front stage
A bleacher with an intermediate drawer stopper C on top,
When used as a normal viewing seat using chairs (not shown), when a drive source (not shown) such as a motor is activated, the frontmost movable platform (not shown) is first moved.
will move forward to A in front of it. In other words, the pillar 3 that becomes the lower base of this first stage movable platform
As shown in FIGS. 1 and 2, the base 1 including the support 3 is in a position where the free stopper 9 of the adjacent rear stage is in a non-contact position and does not protrude above the path of the support 3. After moving forward as it is, it comes into contact with the fixed stopper 6 on the adjacent rear stage side that is waiting on this path. Therefore, from this point onwards, the movable platform 1, together with the base 1 on the adjacent rear stage side, is sequentially pulled out from the movable platform at the frontmost stage onto the floor surface A in front of it in the same manner, and the whole is pulled out in its entirety. Each chair can be used as a uniform seating area where a large number of spectators can sit.

In addition, when using the above-mentioned bleachers as exhibition stands with different floor areas, operate the intermediate drawer stopper C installed on the top surface of each base 1 except for the front row before pulling out the drawer as follows. This will be done. That is, as shown in FIGS. 3 and 4, the lever 10 of the intermediate drawer stopper C is operated before the drawer of each movable bed is pulled out, and the desired free stopper 9 is brought into contact with the previous stopper 11a. Stopper 11b from falling from non-contact position
The base 1 located below the movable platform on the front stage is rotated to the abutting position where it comes into contact with the stage, and is placed so as to protrude above the path of the support column 3 on the front stage adjacent to this stage.
The column 3 will soon come into contact with the above-mentioned free stop 9 which projects onto this advancement path. Therefore, from this point on, the movable platform on the previous stage moves forward with a partial drawer setting that does not reach the full drawer state, which is a state in which the prescribed drawer adjustment amount L is subtracted from the full drawer.

In this way, each movable floor stand can be changed into an exhibition stand with all drawers or some drawers depending on the purpose, and various exhibitions can be realized.
In addition, after using the above-mentioned seats, with the connected chairs in each tier folded, move them backwards, starting from the movable platform in the first tier and returning them to the bottom of the movable platform in the last tier, contrary to the above. By doing so, the entire structure is reduced to a vertical shelf under the highest movable floor table, so that the entire structure can be stored in a storage recess provided on the wall side of the building.

In addition, the mooring plate 4 at each column 3 position is engaged with the fixed stopper 6 or the free stopper 9 for each position when the movable bed platform of each stage is used in the state of full drawer or partial drawer. This allows the entire structure to be moored at once, completely eliminating any disturbances in the seats during use.

[Effect of idea]

This idea involves interconnecting multiple stages of movable platforms, each of which is constructed by erecting supports on a base with rollers at the bottom and assembling them in such a way that they increase in height. A fixed stopper is installed at the front end of each stage to set the full drawer of the movable platform located immediately in front of the relevant stage. The present invention is characterized in that a free stopper is provided at each intermediate portion for selectively setting a portion of the drawer of the movable platform located immediately in front of the relevant stage. Therefore, in addition to the conventional method of drawing out the entire amount of drawers from the movable bed at each stage, it is also possible to draw out a portion of the amount by setting individual settings, so it is possible to adjust the amount of drawers from each movable bed to suit the purpose. The changes have the effect of allowing a variety of exhibitions to be held and being repurposed for purposes other than viewing seats and exhibition stands.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the lower base of the bleachers equipped with an intermediate drawer stopper according to this invention and its full drawer, Fig. 2 is a detailed view of the main part of Fig. 1, and Fig. 3 is a perspective view showing the lower base of the seat equipped with an intermediate drawer stopper according to this invention. FIG. 4 is a detailed view of the main part of FIG. 3, and FIG. 5 is an exploded perspective view of the intermediate drawer stopper. 1... Base, 2... Roller, 3... Support, 4
...Mooring plate, 6...Fixed stopper, 9...Free stopper.

Claims (1)

[Scope of utility model registration request] Each movable bed is arranged in a stair-like manner when the movable bed is extended, and when not in use, the lower movable bed is sequentially stored in the form of a shelf below the adjacent high movable bed. , are interconnected through a pair of bases having support rollers that support each movable bed through a support, and at the front end of each base except for the first stage (lowest stage) base, In a retractable stair-shaped bleacher seat equipped with a fixed stopper that comes into contact with the support of the movable platform on the front stage and sets the full drawer of the movable platform, the midway position of each base except for the base in the front stage. is provided with a free stopper that can be selectively set to a contact position in which it protrudes into the path of the support of the movable platform located in the adjacent front stage and comes into contact with the moving support, or a non-contact position outside the path of the support. An intermediate drawer stopper for retractable stepped bleachers featuring