JPH0432449Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an elevating and lowering type movable audience seat that is used in a multipurpose hall and can serve as both the audience seat and the floor.

[Conventional technology]

In multipurpose halls, in order to make effective use of the floor, the number of seats that can be moved to the sides can be increased or decreased depending on the number of people using the hall or the purpose of use, allowing the entire floor to be used or only a portion of the floor to be used. I try to use it for.

This type of seating is constructed by folding chairs that are arranged side by side in a step-like pattern that descends forward, and then storing the tiered floor that supports these chairs in a nested manner under the rear tiered floor. It is known that this was done.

[Problem that the invention attempts to solve]

When the above-mentioned nesting chairs are retracted, they are finally stored along the wall, but the chairs that are folded and finally stored and the moving device for moving the chairs in and out are required. The occupied floor space cannot be used and the effective floor space is reduced.

Therefore, the chair should be placed on the underside of the elevating floor.
It is conceivable to install it in a foldable manner so that the base plate can be used as part of the floor when accommodating chairs.

However, when installing a chair on the lower surface of an elevating floor, it is required that the installation space be small, that construction is easy and inexpensive, and that repair and inspection are easy.

[Means for solving problems]

The movable bleachers equipped with parallel links according to the present invention include a hollow oblong box-shaped step bed having an opening on the top surface;
a base provided within the tiered floor that can be raised and lowered; and a movable link that is parallel to the fixed link and that is movable in parallel with either the base or the bottom of the tiered floor as a fixed link. , and a parallel link mechanism that is formed with a pair of left and right swinging links that connect opposing ends of both of them and that forms a parallelogram in front view and that supports the base so as to be able to move in parallel; A moving means consisting of a nut fixed to a moving link and a screw rod screwed into the nut, and a moving means placed on the base, protruding above the step bed when in use, and housed within the step bed when not in use. It is characterized by the fact that it is equipped with spectator seats that look like this.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 indicates a horizontally elongated hollow box-shaped step bed, which is arranged in large numbers in the front-rear direction and left-right direction, and its upper surface forms a floor.

Each step bed 1 can be raised and lowered by a lifting means (not shown), and is arranged, for example, in the form of a staircase with a higher step at the rear.

As shown in FIG. 2, a horizontally long rectangular opening 2 with a full left and right width is provided on the upper surface of the step bed 1 along its rear edge.

Reference numeral 3 denotes a horizontally long rectangular cover plate whose lower end is pivotally attached to the rear edge of the upper surface of the opening 2, and covers the opening 2.

A floor plate 4 covers the upper surface of the stepped floor 1 except for the opening 2, and is flush with the cover plate 3 to form a floor surface when the cover plate 3 is closed.

Reference numeral 5 denotes a base that can be raised and lowered, and has a frame 5a that is slightly smaller than the opening 2 and has an oblong rectangular shape in plan view, to which a front plate 5b, a rear plate 5c, side plates 5d, 5d, and a top plate 5e are fixed. It is box-shaped with an open bottom.

These front plate 5b, rear plate 5c, and side plate 5d are in sliding contact with the inner surface of the opening 2. At the lower edge of the left end of the front plate 5b and the rear plate 5c, there is a side plate 1a of the stepped floor 1.
Wheels 6 are provided along the inner surface of the housing.

Reference numeral 7 denotes a guide member, which is composed of a pair of front and rear groove members 7a and 7b whose opening edges face each other, and which is connected to the base 5.
It is fixed to a mounting base 8 provided on the inner bottom surface 1b of the stepped floor 1 facing the tiered floor 1.

9 is a moving link provided within the guide member 7;
It consists of a pair of front and rear vertical plates 9a and 9b that are parallel to each other, and horizontal connecting plates 9c and 9c that connect these at the left and right ends, forming a horizontally long rectangular frame in plan view. .

Wheels 11 are pivotally attached to the front and rear projecting ends of a shaft 10 extending through the left and right ends of the movable link 9, respectively, and these wheels 11 roll on the guide member 7. Therefore, the movable link 9 is movable left and right.

Reference numerals 12 and 13 designate a pair of left and right swinging links, and a pair of front and back swinging links, the upper end of which is pivotally connected to the frame 5a of the base 5 at a predetermined distance. The lower end of the link 12 is pivotally connected to the left end of the movable link 9, and the lower end of the right swing link 13 is pivotally connected to the right end of the movable link 9.

The frame body 5a, the movable link 9, and the left and right swing links 12 and 13 constitute a parallel link mechanism 14 that raises and lowers the base 5 in a parallel state.

15 is a reversible motor mounted on the mounting base 8 and facing in the left-right direction.

A screw rod 16 constituting one of the moving means is connected to the output shaft 15a facing right of the motor 15, and a nut 17 screwed to the screw rod 16 and serving as the other moving means connects the bracket 18. The movable link 9 is fixed to the intermediate portion of the movable link 9 via the movable link 9.

Reference numeral 19 denotes a spectator seat whose seats can be automatically folded vertically, has 12 seats in the left and right direction, and is attached to the upper surface of the base 5. Since such a viewing seat 19 itself is a common one, a description thereof will be omitted.

In order to resist the weight of the bleachers 19 and assist them in rising from the bottom of the tiered floor 1, compression coil springs 2 are installed at the left and right ends of the lower surface of the base 5, respectively.
0 is hanging.

When the motor 15 is rotated in the normal direction in the flat position of the parallel link mechanism 14 shown by imaginary lines in FIG. , 13 is
Figure 1 Rotate clockwise and stand up.

As a result, the base 5 protrudes from the opening 2 to the upper surface of the stepped floor 1 (FIG. 3).

By unfolding the seats of the spectator seats 19, the seats become usable.

In this state, when the seat is raised and folded and the motor 15 is reversed, the swing links 12 and 13
collapsed, and the bleachers 19 were stored inside the tiered floor 1.
The top of step 1 can be used as a floor.

FIG. 4 shows a second embodiment of the present invention in which a driving source is provided externally, and the same parts as in the first embodiment are given the same reference numerals and their explanations will be omitted.

On the outer side of the stepped floor 21, a square projection 22a is provided at the upper end.
A vertical rod 22 having a vertical axis is rotatably supported around a vertical axis, and a bevel gear 23 is fixed to the lower end of the vertical rod 22.

Immediately below the base 5, at the bottom of the stepped floor 21,
A hollow cylindrical moving link 28 facing in the left-right direction is provided.

The moving link 28 houses a screw rod 24 facing left and right, the left end of the screw rod 24 is pivotally supported by a bush 25 fitted to the side plate of the step floor 21, and the tip of the screw rod 24 is connected to the bevel gear 23. bevel gear 26 meshing with
is fixed.

The threaded rod 24 is screwed into a nut 27 fixed to the left end of a hollow tubular moving link 28.

The movable link 28 includes swing links 12 and 13.
(However, 13 is not shown in FIG. 4.) The lower end is pivoted.

With this screw rod 24 and nut 27, the moving link 2
Eight moving means are configured.

The lower end of a rotating shaft rotated by a motor or the like is engaged with the rectangular protrusion 22a of the vertical rod 22, and the vertical rod 2
By rotating 2, the audience seats 19 can be raised and lowered.

In the above-mentioned embodiment, in the parallel link mechanism, the base is a fixed link, but conversely, the step bed side may be a fixed link.

[Effect of idea]

According to the movable bleachers with parallel links according to the present invention, when the bleachers are raised, the swinging links of the parallel link mechanism stand up to support the bleachers, resulting in good stability during use.

In addition, the adjustment when setting up the seats in the tiered floor is easy, and the assembly is easy.

[Brief explanation of drawings]

FIG. 1 is a partially vertical front view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line - in FIG. 1, and FIG. 3 is a longitudinal cross-sectional view taken along the line - in FIG. FIG. 4 is a partially vertical front view showing only the left part of the second embodiment of the present invention. 1... Step floor, 2... Opening, 3... Lid plate, 4...
Floor plate, 5...Base, 6...Wheel, 7...Guide member, 8...Mounting stand, 9...Movement link, 10...
Axis, 11...Wheel, 12, 13...Swing link,
14...Parallel link mechanism, 15...Motor, 16
... Screw rod, 17 ... Nut, 18 ... Bracket, 19 ... Chair, 20 ... Compression coil spring, 2
2... Vertical rod, 23, 26... Bevel gear, 24... Screw rod, 25... Bush, 27... Nut, 28
...Moving link.

Claims (1)

[Scope of utility model registration request] A hollow oblong box-shaped tier with an opening on the top surface, a base provided within the tier that can be raised and lowered, and either the base or the bottom of the tier as a fixed link; A movable link parallel to the link and movable horizontally, and a pair of left and right swinging links connecting opposite ends of these links, forming a parallelogram in front view, and the base. a parallel link mechanism that supports the table so as to be able to move in parallel; a moving means comprising a nut fixed to the movable link and a threaded rod screwed to the nut; An elevating type movable spectator seat characterized by comprising: a spectator seat that protrudes from the ground and is housed in a stepped floor when not in use.