JPH0447112B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present application relates to a telescoping stepped bleacher system having a handrail device installed in a room with a wide floor surface such as a gymnasium.

Conventional Technology Conventionally, in gymnasiums and the like, in order to use the inside of the building for multiple purposes, there has been a retractable staircase that is retracted and stored in a corner of a side wall when not in use, and when in use, expands to form a stepped seating area. In the grandstand,
A handrail device comprising a handrail frame provided on the side surface of each movable platform so as to extend and contract overlapping each other is known, for example, from Japanese Patent Application Laid-Open No. 60-238576.

By the way, the handrail device for the conventionally configured bleachers described above has a defect in that a space is created between the lower part of the handrail frame and the side end surface of the movable platform, allowing objects to fall.This defect has been improved. In order to do this, the applicant first attaches the lower ends of the front strut to the side end surfaces of the movable platform so that the front strut is tilted forward and the rear strut is tilted outward, and
between the upper ends of the front and rear struts, extending forward from the upper end of the rear strut parallel to the side edge of the movable platform;
An L-shaped handrail rod that is bent inward and whose tip is connected to the upper end of the front column is horizontally supported, and is further supported by the rear column and a long part extending forward of the handrail rod. A front surface formed by the front support and the short portion extending inwardly of the handrail lever, and a gap between the side surface and the side end surface of the movable platform are each covered by a cover plate. A special request was made for a handrail device for a stair-shaped bleachers that can be extended and retracted so that they can be folded up and closed.
No. 61-199967 (Unexamined Japanese Patent Publication No. 63-60372) and Patent Application No.
It was proposed in No. 61-199968 (Japanese Unexamined Patent Publication No. 63-60373).

Problems to be Solved by the Invention By the way, according to the handrail device proposed by the applicant mentioned above, the lower end of the front support is attached to the side end surface of the movable bed so that the front support is tilted forward. In order to prevent gaps between the front and rear handrail devices when the bleachers are moved forward and extended,
It is necessary that the rear part of the front handrail device and the front part of the rear handrail device overlap in the lateral direction, and for this purpose, the mounting position of the rear support that constitutes the handrail device needs to be moved back significantly.

Therefore, when configured in this manner, the front and rear width dimensions of each movable platform become large, resulting in an increase in the weight of the entire bleachers.

Means for Solving the Problem Therefore, the present application is configured so that the above-mentioned handrail device can be attached without increasing the front and rear width dimensions of the movable bed. The lower ends of the front strut are attached so as to be inclined forward and the rear struts are inclined outward, and between the upper ends of the front and rear struts, a An L-shaped handrail rod extending parallel to the side edge of the movable platform and bent inward, the tip of which is connected to the upper end of the front column, is horizontally mounted, and further connected to the rear column. ,
a side surface formed by the long portion extending forward of the handrail rod, a front surface formed by the front support and a short portion extending inward of the handrail rod, and a side surface formed by the side surface and the movable platform. In a telescoping staged bleachers with a handrail device configured to close the gaps between the sides and the side end surfaces with cover plates, the support bracket for attaching the lower end of the rear column is attached to the riser part of the movable platform. It is characterized by being attached to the rear side.

Function: When each movable platform is moved backward and retracted during use, the front columns overlap in the front and rear directions, and the rear columns overlap in the side direction, so the handrail devices may interfere with each other. Instead, each movable platform is retracted from the previous one to the bottom of the next one, and is contracted into a vertical shelf shape. Furthermore, since the rear column is attached to the support metal fittings, the rear portion of the movable platform located between the left and right support metal fittings can be omitted, thereby significantly reducing the weight of the entire audience seat.

Embodiments Below, the embodiments of the present application will be described in detail with reference to the drawings.
Reference numerals 1a, 1b, 1c, 1d, and 1e are movable floor platforms in which riser portions 3 are raised at the rear ends of oblong flat plate-shaped floor portions 2 that are sequentially arranged in a step-like manner in the front-rear direction, and these are different from conventional ones. Similarly, the lengths in the left and right directions and the widths in the front and rear directions are all the same, and they are supported on truck legs 4a, 4b, 4c, 4d, and 4e of successively different heights, and are arranged in stages as shown in FIG. It can be expanded into a shape or contracted into a vertical shelf shape as shown in FIG. These trolley legs 4a to 4e
is L-shaped, consisting of a leg stand 6 that is long in the front and rear direction and each has a plurality of small wheels 5, and a support leg 7 that stands upward from one end of this leg stand 6. They are disposed so as to intervene sequentially from the front stage to the rear stage, and support movable floor platforms 1a to 1e, and each stage's movable platform 1a to 1e is integrated with each of the trolley legs 4a to 4e. In this way, the objects in the previous stage are advanced forward one after another, and the objects in each subsequent stage are retracted to the lower side. In this way, each movable platform 1a expands and contracts in a stepwise manner.
Chairs 9 are attached to the mounting bases 8 to 1e.
is attached so that it can be raised and lowered, and each movable floor platform 1
When the movable platforms a to 1e are extended, they are held upright by appropriate means so that the audience can take their seats, and when each movable platform 1a to 1e moves backward, they fall forward and become flat, becoming integrated with the movable platform. It is designed to be able to invade the bottom of the rear movable platform.

The sides of the telescoping stepped bleachers constructed in this way become walking paths, and therefore each movable platform 1
Handrail devices 10a to 10e are provided at the side edges of a to 1e.
will be provided. These handrail devices 10a to 10e
The front column 11 has a lower end attached to the side end face of the movable platform so as to be inclined forward, and the rear column 12 has a lower end attached so as to be inclined outward.
An L-shaped member extends forward from the upper end of the rear column 12 parallel to the side edge of the movable platform, bends inward, and has its tip connected to the upper end of the front column 11. a handrail rod 13, and a side surface formed by the rear support 12 and a long portion extending forward of the handrail rod 13; the front surface formed by the short portion, the side surface, and the movable platform 1a;
A cover plate 14 closes the gap between the side end face of the cover plate 14 and the side end face of the cover plate 14, respectively. Handrail device 1 configured in this way
0a to 10e are similarly attached to each movable platform 1b to 1e, and when each movable platform 1a to 1e is moved backward and contracted, the front columns 11 overlap in the front-rear direction, and the rear The columns 12 are overlapped in the lateral direction, and the handrail devices 10a to 10e are sequentially retracted from the front stage to the inner side of the rear stage, and the movable platform is contracted into a vertical shelf shape, as shown in FIG. Ru.

The above is the handrail device for the telescopically movable stair-shaped bleachers proposed earlier by the applicant. In this configuration, each handrail device 10a is in the extended state shown in FIG.
10e to 10e so that the rear part of the handrail device at the front stage and the front part of the handrail device at the rear stage overlap in the lateral direction, the lower end of the rear column 12 must be connected to a riser part. It is necessary to install it in a position that is set back more than 3, and for this purpose, it is necessary to configure the front and rear width dimensions of the movable floor platforms 1a to 1e to be large so that they extend rearward, and when configured in this way, This has the disadvantage that the weight of the movable bed increases as the height increases.

Therefore, in the present application, the support fittings 15 for attaching the lower end of the rear support 12 are installed on the movable floor platforms 1a to 1e.
This support metal fitting 15 is attached to the rear side of the riser 3, and includes a vertically long fastening plate 16 that is fixed to the rear surface of the side end 3a of the riser 3 in an overlapping manner, and a horizontally extending rearward side from the upper edge of the fastening plate 16. The horizontal arm plate 18 extends rearward from the lower edge of the fastening plate 16 and has an overlapping piece 17 extending forward and overlapping with the upper surface of the side end 3a. An inclined plate 19 that is inclined so that the interval gradually decreases, and these fastening plates 16,
It is composed of a horizontal arm plate 18 and a vertical plate 20 that closes the outer surface of the inclined plate 19. Reference numeral 21 denotes edge fittings that cover the side surfaces of the movable floor platforms 1a to 1e, and a holding portion 22 having a U-shaped cross section in which the side surfaces of the riser portions 3 fit is provided at the rear, and the support fittings 15 are fastened. A plate 16 is fixed to the back surface of the holding part 22 and mounted on the movable floor tables 1a to 1e. Therefore, the lower end of the rear support 12 is attached to the outer surface of the vertical plate 20 of the support fitting 15 attached to the rear sides of the movable floor platforms 1a to 1e so as to project rearward.

Effects of the Invention As described above, according to the present application, the support bracket for attaching the rear support that constitutes the handrail device is attached to the rear side of the raised part of the movable platform, so the front and rear width dimensions of each movable platform are shortened. This makes it possible to reduce the weight of the mobile bed.
Therefore, the weight of the entire audience seat can be reduced, the expansion and contraction operations can be made light, and the power required is small.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partially cutaway side view of one row of bleachers in the extended state, FIG. 2 is a partially cutaway side view of the same row of seats in the contracted state, and FIG. 3 is a partially cutaway side view of one row of seats in the extended state. A partially exploded perspective view showing the mounting structure of the support metal fittings, handrail device, and cover plate to the floor table; Fig. 4 is an exploded perspective view showing the mounting structure of the support metal fittings and the movable floor table; Fig. 5 is the support metal fittings. FIG. In the figure, 1a to 1e are movable floor platforms, 3 is a riser, 10a to 10e are handrail devices, 11 is a front column, 12 is a rear column, 13 is a handrail lever, 14 is a cover plate,
15 is a support metal fitting, 16 is a fastening plate, 18 is a horizontal arm plate, 19 is an inclined plate, and 20 is a vertical plate.

Claims (1)

[Scope of Claims] 1. On the side end surface of the movable platform, the front column is inclined forward and the rear column is inclined outward.
Attach their lower ends to each other, and between the upper ends of the front and rear struts, extend forward from the upper end of the rear strut parallel to the side edge of the movable platform, and bend inward so that the tip thereof A side surface that horizontally spans an L-shaped handrail rod connected to the upper end of the front strut, and further formed by the rear strut and a long part extending forward of the handrail rod, and the front strut. The handrail device is configured such that the front surface formed by the inwardly extending short portion of the handrail rod and the space between the side surface and the side end surface of the movable platform are respectively closed by cover plates. A telescoping stair-shaped viewing area with a handrail device, characterized in that a support fitting for attaching the lower end of the rear column is attached to the rear side of the riser of the movable platform. seat. 2. The support fitting includes a vertically long fastening plate that is fixed to the rear surface of the side end of the riser in an overlapping manner, and a vertically long fastening plate that extends horizontally backward from the upper edge of the fastening plate and overlaps the top surface of the side end in the front. a horizontal arm plate with an overlapping piece extending thereon, an inclined plate extending rearward from the lower edge of the fastening plate and slanted so as to reduce the distance between the fastening plate and the horizontal arm plate; A telescoping stepped grandstand having a handrail device according to claim 1, comprising a plate and a vertical plate closing the outer surface of the inclined plate.