JPH0245381Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a variable pull-out stopper for telescoping stepped bleachers.

[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, thereby allowing the tops of each of the above-mentioned movable platforms to be used as the surface of the platform. can.
In addition, when not in use, contrary to the above, by moving backwards from the first movable base to the bottom of the highest movable base, the whole unit can be placed under the highest movable base in the form of a vertical shelf. It was constructed so that it could be stored in a recess provided on the wall of the building.

[Problem that the invention attempts to solve]

Due to the above-mentioned configuration, the conventional telescoping stepped seating has the following problems.

(1) When using the bleachers, the amount of pullout of the movable platform at each tier was always constant. Therefore, these seats could not be used as a platform with different widths at the front and rear, which made the use of the venue less efficient due to the installation of these seats.

[Means for solving problems]

This invention solves the above-mentioned problems of the prior art, and by arranging stoppers between adjacent bases, the desired amount of pullout of the movable platform for each stage can be arbitrarily set. When used, the variable drawer of the retractable tiered bleachers can be used in a variety of ways as a platform surface with a variety of front and rear widths, thereby greatly increasing the efficiency of use of the venue. The goal is to provide a stopper. The feature of this invention is that the movable platform is made up of multiple tiers, each of which is constructed by erecting columns on a base with rollers at the bottom and assembling them in order to increase the height. In a spectator seat that can be moved by expansion and contraction, a screw shaft is rotatably arranged from the front position beyond the pillars on the top of the base to the rear end, and this screw shaft has a screw shaft attached to the adjacent rear pillar. The abutting stopper is screwed together so that it can be moved back and forth.

[Effect]

When using the bleachers with the above configuration as floor surfaces with different pull-out amounts, the stopper screwed onto the screw shaft of each base should be screwed into the screw shaft before the drawer of each movable floor is pulled out. After the stopper of each tier is moved to the position where the movable platform of each tier corresponds to the desired amount of drawer, when the seats stored in this state are moved forward, the movable platform of each tier is moved. When the stoppers move forward, the stoppers, each of which is threaded onto a screw shaft on the base, move forward as well. At that time, when the movable platform moves forward and its stopper comes into contact with the support of the movable platform adjacent to the next stage, it is pushed by this stopper and from that point on, the movable platform on the next stage also moves forward as one unit. will start. In this manner, when each movable platform is sequentially advanced and the entire platform is extended into a pedestal shape, the stoppers of each stage will have different set positions due to the above.
Each of the above-mentioned movable floor stands can easily secure a floor surface by the amount of each pullout, with the distance between each support column and the rear column adjacent to that column being the front and back length. In addition, when the use of the above-mentioned floor platform surface is finished and the seats are to be stored, it is necessary to move the seats backwards from the movable platform at the very front to the bottom of the movable platform at the highest level, in the opposite direction to the above. moves backward while separating from the support of the next stage that it had been in contact with, allowing each subsequent stage to move backwards without any hindrance.This allows the entire vertical shelf to be placed under the movable platform of the highest stage. It can be smoothly stored in a predetermined storage recess in the reduced state.

〔Example〕

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

As partially shown in Figures 1 and 2, when in use, the entire bleachers (not shown) are moved forward from the storage recess at the rear onto the floor in front A, and when not in use, this floor In order to move backward from the top into the storage recess at the rear, rollers 2 are provided at the bottom.
At the top, there is a pair of left and right bases 1 with pillars 3 erected,
As the height of the movable platform (not shown) installed on the pillars 3 of each stage increases, they are arranged outward in proportion to each other, and each of the pillars 3 is assembled in such a way that the height of each pillar 3 increases in turn. After that, in a spectator seat in which a plurality of tiers of movable platforms according to this embodiment are interconnected and can be moved by expansion and contraction in the front and back direction, a movable platform is provided on the top surface of the base 1 of each tier. Variable drawer stoppers that can arbitrarily set the amount of drawer are arranged as follows.

That is, as shown in Figures 1 to 3,
The above-mentioned variable drawer stopper is composed of main parts of a screw shaft 5 and a stopper 6. First, the screw shaft 5 has a length from its front position beyond the support column 3 on the top surface of the base 1 to the rear end of the base 1, and has a predetermined diameter on the circumferential surface other than the front and rear ends. A male thread is formed. The screw shaft 5 according to this embodiment has a bearing 4A fixed at both ends to the front and back positions on the base 1,
4B, it is rotatably disposed at a prescribed height position on the upper surface of the base 1 in a horizontal position parallel to the longitudinal direction. A spring pin 5a is fixedly inserted into the rear circumference of the screw shaft 5, into which a cut groove 9a of a handle 9, which will be described later, is fitted.

A stopper 6 shown below is arranged on the male thread of the screw shaft 5 described above so as to be movable back and forth. This stopper 6 is constructed as follows. In other words, each stopper 6 has the above-mentioned screw attached to one end of the stopper surface made of a rectangular plate that can come into contact with the rear surface of the support column 3 which is erected on the rear side base 1 adjacent to the outside of the base 1. A threaded bearing 6a is welded to the inner diameter surface of the shaft 5 and has a female thread that can be screwed into the male thread of the shaft 5, and an L-shaped slide piece 6b is attached to the lower end circumferential surface of the threaded bearing 6a. The stopper 6 according to this embodiment is arranged so as to be movable back and forth in the longitudinal direction by sliding the slide piece 6b on the upper surface of the base 1 and screwing into the screw bearing 6a. In this case, the slide piece 6b of the stopper 6
This stopper 6 is located on the top surface of the base 1 on which the
In order to visually recognize the set movement amount, a gauge 8 on which a numerical value of the movement reference is displayed on a part of the upper surface is attached parallel to the longitudinal direction. Further, at one end of the circumferential surface of the bearing 4B that supports the rear shaft surface of the screw shaft 5, in order to keep the stopper 6 fixed at the set position after the stopper 6 has been moved to the desired position of the screw shaft 5. A fixed knob 7 that presses the rear shaft surface from the outside of this position is screwed into the drawer, and the entire pull-out stopper is constructed as a variable pull-out stopper. Note that 9 shown in FIG. 1 has a cut groove 9a at the tip,
This handle is used to spiral the screw shaft 5 in a desired direction by fitting the cut groove 9a into a spring pin 5a protruding from the rear end of the screw shaft 5.

With the above configuration, when the bleachers equipped with variable pull-out stoppers on their respective bases 1 are used as floor base surfaces with different pull-out amounts, before the drawers of the movable bases (not shown) in each stage are used, The stopper 6 screwed onto the screw shaft 5 of the base 1 for each stage is fitted with the handle 9 at the rear end of the screw shaft 5, and the cut groove 9a is inserted into the spring pin 5 at this position.
When the handle 9 is operated to spiral the screw shaft 5 of each base 1 in a predetermined direction in the state in which it is engaged with the screw shaft 5, the stopper 6 of each stage screwed onto each screw shaft 5 will be rotated. It moves on the axis of the screw shaft 5 in the direction of screwing forward or backward. Therefore, the distance from the position where the stopper 6 is stopped to the support column 3 of the base 1 is the set value for the amount of withdrawal of the movable bed at this stage. A gauge 8 is attached to the upper surface of the base 1 on which the stopper 6 slides, so by moving the stopper 6 according to the value of the gauge 8, the amount of movement of the movable platform at each stage can be determined. can be set accurately and easily.

After the stopper 6 of each stage is moved by the above-mentioned spiral operation to the position where the movable platform (not shown) for each stage corresponds to the desired amount of drawout, the seats stored at this point are moved by the unique driving force. When the base 1, which is integrated with the movable platform (not shown) of each stage, moves forward by the rolling of the rollers 2, it is screwed into the screw shaft 5 on the base 1. The stopper 6 also moves forward as a unit. At that time, as shown in FIG. 1, when the first stage base 1 moves forward and its stopper 6 comes into contact with the support 3 on the next stage adjacent base 1, the next stage base 1 moves forward. It will be pushed by the stopper 6 from behind. Therefore, from that point on, the base 1 on the next stage side will also start moving forward as one. In this manner, when the base 1 of each stage integrated with each movable bed is sequentially advanced and all the movable beds are extended like a dais, the stoppers 6 of each stage will have different set positions due to the above. Therefore, each of the above-mentioned movable floor bases can easily secure a floor base surface (not shown) by the amount of each pullout, with the distance between each support 3 and the rear support 3 adjacent to that support 3 as the front and back length. can.

In addition, when the use of the floor base surfaces with different pull-out amounts is completed as described above and the seats are to be stored, the unique driving force of the seats is operated again to move the movable floor base (not shown) from the front stage to the above-mentioned. Conversely, when each movable bed is moved backwards to the bottom of the movable bed of the highest stage by returning to the bottom of the movable bed of the next stage, the screw shaft 5 disposed on the base 1 of the foremost stage is removed. Since the stopper 6 that had been screwed together also retreats as a unit, the stopper 6 on the frontmost stage moves away from the support 3 on the next stage with which it had hitherto been in contact. Therefore, since the stopper 6 on the previous stage side is not present in the retreating path for each subsequent stage of support 3, it is possible to retreat to the original position without any hindrance. It can be smoothly reduced to a vertical shelf under the movable bed and stored in a predetermined storage recess.

[Effect of idea]

This idea is based on a multi-tiered movable platform that is made up of pillars set up on a base with rollers at the bottom, which are assembled in order to increase in height, and can be moved by expanding and contracting in the front and rear directions. In the bleachers, a screw shaft is rotatably arranged from the front position beyond the pillars on the top of the base to the rear end, and a stopper that contacts the adjacent rear pillar is attached to the screw shaft. It is characterized by being movably screwed together.
Therefore, by moving the stopper on the screw shaft placed between adjacent bases to a desired distance by spirally operating the screw shaft and setting the position, when the seats are in use, the front and rear width can be adjusted. Since the floor surface can be used in a wide variety of ways, it has the effect of greatly increasing the efficiency of use of venues equipped with this type of seating.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the operating direction of the stopper in the base of a bleacher seat equipped with a variable drawer stopper according to this invention; Fig. 2 is a schematic rear view showing the relative arrangement of the stopper and adjacent bases; FIG. 3 is a side view of the base provided with the same stopper. 1... Base, 2... Roller, 3... Support, 4
A, 4B...Bearing, 5...Screw shaft, 6...Stopper.

Claims (1)

[Scope of utility model registration request] A spectator seat that can be moved by expanding and contracting in the front and rear directions by interconnecting a movable floor platform made up of multiple stages, each of which has columns set up on a base with rollers at the bottom and assembled to increase in height in sequence. , a screw shaft is rotatably arranged from a front position beyond the support on the top surface of the base to the rear end, and a stopper abutting the adjacent rear support is mounted on the screw shaft so as to be movable back and forth. A variable pull-out stopper for telescoping staircase-like bleachers, which is characterized by being screwed together.