JPH0238997Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an apparatus for preventing objects from falling in telescopic and deployable bleachers used in large venues.

[Conventional technology]

Conventionally, a telescopic deployment system has been constructed in which the seats are located above the front end of the floorboard and each trolley, each with a different height, is pulled out in a step-like manner and unfolded, or each seat is stacked below the upper seat so that it can be stored freely. In the grandstand seats, objects dropped by spectators sitting on the seats roll on the floorboards and fall to the lower side of the seats, making them difficult to remove.

[Problem to be solved by the invention] The present invention solves this drawback. Even if an object falls onto the floorboard and rolls, it can be easily picked up without falling to the lower side of the seat. To provide a simple structure that can be conveniently installed so that feet do not get caught on the edge of a floorboard, and can be suitably implemented.

[Means for solving problems]

Therefore, in the present invention, a fall prevention plate is installed above the bottom surface of the end of the floor plate at the front and rear ends of each floor plate below the front seat and the rear upper seat of each trolley. .

[Effect]

With this configuration, even if an object falls onto the floorboard and falls below the seat, the fall prevention plate prevents the object from falling.

〔Example〕

Next, the embodiment shown in the drawings will be described.

Fig. 5 shows a side view of the bleachers unfolded in a stair-like manner, and the rear portions of the trolleys A1, A2, A3, and A4, which are equipped with wheels 5 at the bottom and have different heights, are successively higher. Rear frame 6a, 6b, 6
c and 6d are respectively erected, and a support frame 7 extending horizontally from the rear frames 6a to 6d to the front side is installed on the upper part of each bogie A1...A4, respectively.
A bench-type seat 2 supported by a bracket 8 is installed above the front end of each support frame 7,
A curtain plate 9 is provided vertically below the front end of each seat 2, and an upper end seat 2a with a curtain plate 9 suspended above the standing wall X is also supported by a bracket 10, and each bogie A1...A4 When the seats 2 are moved toward the upright wall surface X, the seats 2 are stacked vertically as shown in FIG. 6, and the trolleys A1...A4 are installed and configured so that they can be stored in a stacked manner.

3 and 4 are fall prevention plates, and the upper end 3 of each
a, 4a and lower end portions 3b, 4b are bent in opposite directions to form a substantially Z-shape 3 in side view and a substantially reverse Z-shape 4 in side view, and above the support frame 7 is a single wide floor plate 1. The fall prevention plate 3 is installed so that it stands up by inserting the lower end 3b of the fall prevention plate 3 under the front end of the floor plate 1, which is the lower side of the front seat 2, and fixing it with each bolt and nut 11. The lower end portion 4b of the fall prevention plate 4 is inserted below the rear end of the floor plate 1, which is below the seats 2 and 2a, and is attached so as to stand up.

FIG. 4 shows another embodiment, in which fall prevention plates 3, 4
The upper end portions 3a, 4a are bent in the same direction as the lower end portions 3b, 4b.

Therefore, when the seats are expanded and used as shown in FIG. 5 and FIG. This means that it is possible to prevent the person from falling below the seat 2 due to being blocked by the fall prevention plates 3 and 4.

[Effect of idea]

In this way, with the present invention, even if a person sitting on the seat 2 drops an object that easily rolls, such as a pot, onto the floorboard 1 when the bleachers are unfolded and used, the fall prevention plates 3 and 4 prevent the person from falling. As a result, it no longer falls below the seat 2 and becomes difficult to remove, as was the case in the past, and now you can sit with peace of mind.
Since the lower parts of the fall prevention plates 3 and 4 are not installed by protruding onto the floorboard 1, the structure is safe and will not cause damage if a person's foot falls on it, and it is easy to install without requiring any separate parts. It has the advantage of being able to be suitably implemented in a structured manner.

[Brief explanation of drawings]

Figure 1 is a side view of the main parts of an embodiment of the present invention;
FIG. 2 shows a part of FIG. 1, FIG. 3 is an exploded view of a part of FIG. 1, FIG. 4 shows another embodiment, and FIG.
The figure is a side view of the seats in the unfolded state, and FIG. 6 shows the seats in the retracted state. 1... Floor board, 2... Seat, A1, A2... Trolley, 3, 4... Fall prevention plate.

Claims (1)

[Scope of utility model registration request] Seats 2 are provided above the front end of each floorboard 1. When in use, the trolleys A1, A2, etc., each having a different height, are pulled out and unfolded in a stepwise manner. When not in use, the seats 2 are placed one after another on the upper seats and the bottom of the floorboard. In the telescoping and deployable bleachers configured to be stored one on top of the other, a floorboard 1 is stretched between the lower surface of the front seat 2 and the lower surface of the rear upper seat 2 in each of the trolleys A1, A2, and so on. The lower end of the front fall prevention plate 3 having a substantially Z-shape in side view is inserted into the front end of each floorboard 1, and the lower end of the rear fall-prevention plate 4 having a substantially inverted Z-shape in side view is inserted into the rear end of the floorboard 1. An apparatus for preventing articles from falling in an extendable bleacher seat, characterized in that the front and rear fall prevention plates 3 and 4 are respectively installed upright on the underside of the seats 2 by inserting them into the seats.