JPH033029B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improvement in a handrail device for telescoping and movable stair-shaped bleachers installed in a room with a wide floor such as a gymnasium.

Conventional technology and its problems Conventionally, in telescoping and movable staircase-like bleachers installed to enable multi-purpose use of large indoor spaces such as gymnasiums, in order to ensure the safety of spectators, each tier has been A structure in which handrail devices are provided at both ends of a movable bed is known, for example, from Japanese Patent Laid-Open No. 60-238576.

However, in the conventionally known device described above, the lower ends of the front and rear columns are attached to the respective side ends of the movable platform of each stage, so that the rear column is tilted forward, and the rear column is moved more than the front column. It is erected in a state that is offset outward from the edge of the floor platform, and by supporting the front and rear at the upper ends of the front and rear columns of each tier, handrail rods are provided respectively, and furthermore, a handrail is provided between the front and rear columns of each tier. Since a side wall panel is attached to the wall, there are disadvantages as described below.

In other words, the relationship between the front and rear supports installed on each movable platform is as follows:
When viewed from the front, it is in a vertical state, with the front struts shifted inward and the rear struts shifted outward, and side wall panels will be stretched between the front and rear struts, so the side walls of the adjacent front and rear stages will be In order to configure the panels so that they do not interfere with each other, as shown in the above-mentioned known example, the lower edges of each side wall panel must be located at a higher position than the upper edge of the side wall panel two stages before, and the adjacent It is necessary to install the side wall panels in the front and rear tiers so that they are offset alternately to the inside and outside of the support, and as a result, a space is created between the lower edge of the side wall panels in each tier and the floor of the movable platform. Not only does this seriously spoil the appearance, it also gives a sense of unease to users going up and down the bleachers, and since the area below the handrail is a place where people walk, objects may fall from the handrail and the area below it. There is a risk of injury to people walking on the road.

OBJECTIVES, EMBODIMENTS AND OPERATIONS OF THE INVENTION Therefore, the present invention aims to improve the deficiencies of the above-mentioned conventional products, and one embodiment thereof will be described below with reference to the drawings.
b, is a horizontally long flat movable floor that is arranged sequentially in a step-like manner in the front-rear direction, and like the conventional one, these have the same length in the left-right direction and width in the front-rear direction, and the same height. The movable platforms are supported on legs having small wheels on the lower surface, and the movable platforms of each stage are sequentially advanced from the previous stage to the front, and is configured to sequentially retract to the lower side of the subsequent stage.

The sides of the telescopic and movable stepped bleachers constructed in this way become walking paths, and therefore each movable platform 1
Handrail frames 2 are provided at the side ends of a and 1b. This handrail frame 2 is constructed in the same way for each stage, so
What is provided on the frontmost movable platform 1a will be described in detail.

This handrail frame 2 includes front and rear supports 3, 4, and a handrail rod 5.
At the front position of the side end surface of the movable platform 1a,
The lower end of the inclined portion 3' of the front column 3, whose lower part is inclined slightly inward, is fixed so as to tilt forward, and the rear column 4 is attached to the front column 3 on the protrusion 6 that protrudes laterally at the rear. Similarly, it is constructed by extending a handrail rod 5 between the upper ends of the front and rear columns 3 and 4, with their lower ends fixed so as to tilt forward.
The handrail rod 5 has a substantially L-shaped bent shape, and includes a straight portion 5a extending forward from the upper end of the rear support 4 parallel to the side edge of the movable platform 1a, and a straight portion 5a extending from the front end of the straight portion 5a to the front support 3. It consists of a right-angled bent line portion 5b reaching the upper end of. Between the front and rear columns 3 and 4 of the handrail frame 2 configured in this manner, the upper edge is located inward from the rear column 4 and is parallel to the side edge of the movable platform 1a, and the lower edge is located inwardly than the rear column 4. A side wall panel 7 is stretched so as to come into contact with the side end surface of the movable bed 1a. That is, a rear mounting piece 8 is provided in a protruding manner on the upper inner surface of the rear column 4, and a front mounting piece 9 is provided in a protruding manner on the upper outer surface of the front column 3.
, the upper front and rear surfaces of the side wall panel 7 are fixed,
In addition, by fixing its lower edge to the side end surface of the movable platform 1a with the fasteners 10, the side wall panel 7
is attached within the handrail frame 2.

In this way, the handrail frame 2 to which the side wall panel 7 is attached is provided to other movable floor stands in the same way.

Therefore, when each movable platform is moved backward and shortened, as shown in FIG. Since the handrail frames 2 of each stage overlap, the handrail frames 2 of each stage retract from the previous stage to the bottom of the latter stage one after another without interfering with each other.

FIG. 3 shows a configuration in which the gap between the front edge of the side wall panel and the front column 3 and the gap between the rear edge of the side wall panel and the rear column 4 are also closed. In this configuration, parallel At the front edge of the quadrilateral side surface portion 11a, an inverted triangular front surface portion 11b is placed facing inward.
In addition, triangular rear panels 11c are bent outward at their rear edges to form an integrated side wall panel 11.
At the same time, the inner edge of the front part 11b is connected to the front support 3, and the outer edge of the rear face part 11c is connected to the rear support 4.
They are attached to each.

Also in this configuration, the handrail frames 2 of each stage retract from the previous stage to the bottom of the latter stage one after another without interfering with each other.

In the above embodiment, the handrail frame 2 has the front and rear supports 3 and 4 of the same apparent height and horizontally supports the handrail rod 5, but the rear support 4 is made higher and the handrail rod 5 is horizontally supported. It may also be hung horizontally with the front facing down.

Effects of the Invention As described above, according to the present invention, since no space is created between the side wall panel and the side end surface of the movable bed, the appearance in the extended state is very good. In addition, it is possible to provide a handrail device for a spectator seat that is highly safe.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially exploded perspective view of the main parts, FIG. 2 is an enlarged front view with some parts omitted, and FIG. 3 corresponds to FIG. 1. FIG. In the figure, 1a and 1b are movable floor platforms, 2 is a handrail frame, 3 is a front column, 4 is a rear column, 5 is a handrail lever, 6 is a protrusion,
7 and 11 are side wall panels, 8 and 9 are mounting pieces, 10 is a stopper, 11a is a side part, 11b is a front part, 11c
is the rear part.

Claims (1)

[Scope of Claims] 1. A front column is attached to the side end of each movable platform in a forward-inclined state, and a rear column is attached to a protrusion protruding from the rear side of the movable platform in a forward-inclined state. In the telescopic and movable staircase-like bleachers, in which the front and rear ends of handrail rods with the front parts bent inward are attached to the tops of both the front and rear pillars, the upper edge is located between the front and rear pillars. The side wall panel is installed inwardly from the support column, parallel to the side edge of the movable platform, and slanted outward so that the lower edge is in contact with the side edge of the movable platform. A handrail device for a telescoping and movable stair-shaped bleachers, characterized by: 2. A handrail device for an extendable and retractable staircase-like bleachers as set forth in claim 1, wherein the lower part of the front support is inclined inward and attached to the side end of the movable floor plate. 3. A patent claim in which the handrail extends from the upper end of the rear column in parallel with the side edge of the movable platform, and its front end is bent inward in an L-shape and positioned at the upper end of the front column. A handrail device for a telescoping and movable stepped grandstand according to item 1 or 2. 4 At the side ends of each movable platform, the front column is attached in a forward-leaning state, and the rear column is attached to the protruding part protruding from the rear side of the movable platform in a forward-leaning state. In a retractable and movable staircase-like bleachers consisting of the front and rear ends of a handrail with its front part bent inwardly attached to the top of a column, the upper edge is located inwardly from the rear column between the front and rear columns. At the front edge of the side surface, which is located parallel to the side edge of the movable floor base and whose lower edge abuts the side edge of the movable base, an inverted triangular front face is placed inwardly, and afterward. A side wall panel is interposed between the edge and the rear part of the erect triangular shape is bent outward and integrated, so that the inner edge of the front part serves as the front column, and the outer edge of the rear part serves as the rear column. A handrail device for an extendable and retractable stair-shaped bleachers, characterized in that the lower edges of the side portions are fixed to the side ends of the movable platform. 5. A handrail device for an extendable and retractable stepped grandstand as claimed in claim 4, wherein the lower part of the front support is inclined inward and attached to the side end of the movable platform. 6. A patent claim in which the handrail extends from the upper end of the rear column in parallel to the side edge of the movable platform, and its front end is bent inward in an L-shape and positioned at the upper end of the front column. A handrail device in the telescopic and movable staircase-like bleachers according to item 4 or 5.