JPH024613Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a method for extending the seats in a theater or gymnasium, etc., when it is desired to temporarily construct the seats, configuring the seats in a stair-like shape, and contracting the seats when not in use. The present invention relates to a handrail device for an extendable and retractable bleacher seat that can be stored in a corner of a room.

Conventional technology and problems Conventionally, in theaters, gymnasiums, etc., when it is desired to temporarily install bleachers, the bleachers are extended to form a staircase-like structure, and when not in use, the bleachers are retracted and stored in a corner of the room. A handrail device for movable and extendable bleachers is known, for example, from Japanese Utility Model Application Publication No. 58-166745.

However, according to the conventional structure, between the upper ends of the front and rear columns, which are erected at the front and rear end positions of the movable platform of each stage, respectively, in a forward tilted state and with the rear part deviated outward,
Since the front part is equipped with a handrail that is bent in an L-shape or a handrail that extends in a straight line, in the former case, there is not only a risk that objects may be caught while walking due to the presence of the L-shaped bent part. If the height of the handrail, which is set according to the average height of an adult, corresponds to the height of a child, there is a risk that the child's face or neck may get caught in the L-shaped bent part. Although this does not pose the above-mentioned dangers, when the bleachers are retracted, the rear column is largely deviated outward from the front column so that the handrail at the front position does not come into contact with the front column at the rear position, or The handrail position of the front stage must be shifted outward in sequence from that of the rear stage, and as a result, the rear column may be far away from the side edge of the movable platform, or the handrail position of the front stage position and the last stage position may be different. They have defects such as a large difference in outward direction, which requires a large amount of space when retracted, or the position of the handrails when extended is uneven, resulting in a significant loss of appearance.

Purpose and Examples of the Invention Therefore, the present invention is an improvement on the above-mentioned defects of the conventional one, and its feature is that a single metal pipe is bent and formed, and a rear strut is connected to the rear strut and a front end at an obtuse angle from its upper end. a handrail that extends forward through a first bent part that bends in the direction of the handrail; a second bent part that bends inward from its front end and slopes slightly downward; and a third bent part that bends downward in the bending direction. A handrail frame is constructed of a front support that extends downward through the rear support and is parallel to the rear support, and its lower end is placed between the front and rear outer ends of the movable platform of each stage so that the handrail is approximately horizontal. It is characterized by being attached to the position.

That is, in the figure, 1 is the rear strut, 2 is the first bent part bent forward at an obtuse angle from its upper end, and 3 is this first bent part.
A handrail extending forward through the bent part 2, 4 is a handrail 3
5 is a third bent portion that is bent inward from the front end of the second bent portion 4 and is inclined slightly downward; 5 is a third bent portion that is bent downward from the second bent portion 4 in the bending direction; A front strut that extends and is parallel to the rear strut 1, and the rear strut 1, the first bent part 2, the handrail 3, the third bent part 4, the third bent part 5, and the front strut 6 are made by bending a single metal pipe. The handrail frame 7 is formed integrally by processing, and the lower ends of the handrail frame 7 configured in this way, that is, the front and rear supports 6 and 1
The lower end of the seat is connected to the movable spectator seat 10 via the fixture 8.
A handrail 3 is attached to the front position of the side end of each movable floor platform 11 constituting the platform and to the end of the cross beam 12 that deviates outward from the side end so that the handrail 3 is in a substantially horizontal state. . The movable platform 11 has leg supports 1 at the rear ends of left and right horizontal legs 14 having rolling wheels 13 on the lower surface.
5 are erected, and a floor board 16 is horizontally suspended between the upper parts of the left and right leg supports 15 so as to project forward, and a chair 17 that can be folded and raised is disposed on this floor board 16. It has been done.

In the extended state of the telescopic movable bleachers 10, the handrails 3 are arranged in a step-like manner parallel to the floor of each movable platform 11, as shown in FIG. The rear front struts 6 are located within the second bent portion 4 and arranged as shown in FIG.

Note that the embodiment shows a case where only the handrail frame at the last stage position has the rear support 1 and the handrail 3 formed at right angles.

Effects of the invention As described above, the handrail frame of the present application is formed by bending a single metal pipe, so that when it is attached to a movable bed, there are no angular parts as in the conventional case, and the second Since the bent portion is formed to be inclined downward, there is no danger due to the bent portion, and an extremely safe handrail device can be provided as a whole, and the handrail frame is easy to manufacture and is suitable for mass production.
It has advantages such as being inexpensive.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a front view of the handrail frame, FIG. 2 is a top view of the same, FIG. 3 is a partial perspective view showing how the handrail frame is attached to the movable bed, and FIG. The figure is a side view of the telescopic movable spectator seat equipped with the handrail device of the present invention when it is extended, and FIG. 5 is a side view of the same when it is in the contracted state. In the figure, 1 is the rear support, 2 is the first bending part, 3 is the handrail,
4 is a second bending part, 5 is a third bending part, 6 is a front strut,
7 is a handrail frame, 10 is an extendable movable viewing seat, and 11 is a movable platform.

Claims (1)

[Scope of utility model registration request] A single metal pipe is bent and molded to form a rear strut, a handrail that extends forward through a first bent part that bends forward at an obtuse angle from its upper end, and a handrail that bends inward from its front end and extends slightly downward. A handrail frame is constituted by a front support column extending downward through a second bending part that is inclined in the direction of the second bending part and a third bending part that is bent downward in the bending direction and parallel to the rear support post, and the lower end of the handrail frame. 1. A handrail device for a telescopic movable bleachers, characterized in that said handrails are attached to the front and rear outer ends of the movable platform of each stage so that said handrails are substantially horizontal.