JPH0432448Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for moving movable seats used in multipurpose halls and the like.

[Conventional technology]

For multi-purpose use in gymnasiums, halls, grounds, etc., after folding the chairs that are arranged in parallel in the form of steps that descend forward, the tiered floor that supports these chairs is placed under the rear tiered floor. Movable seats are known which are arranged to be nested one after the other.

Conventionally, in order to move in and out of such a stairway, a wire whose front end was fixed to the front row of steps and whose rear end was wound around a drum was wound up and unwound. , wheels attached to the underside of the legs of each tier were moved by rolling on the floor surface.

Therefore, in order to prevent the wheels supporting a large load from scratching the floor surface or leaving travel marks, the wheels do not come into direct contact with the floor surface.
For example, an endless belt that is in contact with the floor surface is disclosed in Utility Application No. 188285-1985 (Utility Model Application No. 188285-1983)
No. 96443) is stated in the application and specification.

[Problem that the invention attempts to solve]

In the prior art described above, since each wheel and endless belt are smooth, there is a risk of slipping between them.

In order to prevent this, the wheels and the endless belt may be provided with teeth, but if this is done, the local load on the endless belt and thus the floor will be large, and their damage will be accelerated.

[Means for solving problems]

The present invention provides a movable bleacher seat equipped with wheels that can be moved on the floor, in which pulleys having teeth on both sides of the outer peripheral surface are provided at the front and rear ends of the lower part, and between both pulleys, A plurality of wheels are provided, each having a narrow width, a smooth outer peripheral surface, and a lower surface located below both pulleys, and an endless belt having teeth on both sides of the inner peripheral surface is spanned between these pulleys and wheels. The above-mentioned problem is solved by meshing the teeth of the pulley with the teeth of the endless belt and by bringing the lower surface of the wheel into contact with the toothless central flat plate on the inner peripheral surface of the endless belt. be.

[Effect]

Since the flat plate part of the endless belt is in contact with the bottom surface of the wheels, when the movable bleachers move, all the wheels come into surface contact with the floor surface via the endless belt, which prevents damage to the floor surface. There isn't.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

Reference numerals 1 to 4 indicate four tiered beds that are arranged in this order in a manner that becomes lower toward the front and that are arranged side by side in the front-rear direction.

At the rear ends of the floor plates 1a to 4a on the upper surface of each of the tiered floors 1 to 4, low-sized back plates 1b to 4b are erected, respectively.

On the lower surface of the rear end of each floorboard 1a to 4a,
Leg rods 1c to 4c whose planar shape has a forward U-shape, and the rear ones are successively taller and wider, and can be fitted in a nested manner.
However, one pair on the left and right are fixed in a hanging position.

A mounting plate 5 is provided vertically at the lower end of each of the leg rods 1c to 4c, and a moving device 6, which will be described later, is attached to each mounting plate 5.

On each of the tiers 1 to 4, there are a number of chairs 8, with the lower ends of the left and right legs 8a, 8a connected to each other by horizontal rods 7 in the left and right direction, except for the central aisle.
They are arranged symmetrically.

At important points on the horizontal rod 7, there is a downward lever 11.
is fixed, and the lower end of the lever 11 is connected to each step floor 1 to 4.
It is fixed to a left-right rotating shaft 10 passing through a base 9 fixed to the upper surface of the rear end.

The rotating shaft 10 is driven by a drive means (not shown).
When the chair 8 is rotated, each chair 8 is rotated from the upright position shown in FIG. 1 to the reclining position shown in FIG.

Next, move the audience seats from the usage position shown in Figure 1.
A moving mechanism for moving each of the tiered beds 1 to 4 to the storage position shown in FIG. 2 will be explained.

Reference numeral 13 in FIG. 1 denotes a fixed pulley protruding rearward from the rear edge of the central part of the foremost step bed 4;
A fixed pulley 4 is provided on the lower surface of the next stepped floor 3, facing the fixed pulley 13.

Similarly, a fixed pulley 15 is attached to the rear edge of the next step bed 3.
However, also on the lower surface and rear edge of the step bed 2 behind it,
Similar fixed pulleys 16 and 17 are provided, respectively.
A fixed pulley 1 is installed on the front lower surface of the rearmost step bed 1.
8 is provided.

19 is a stationary pulley attached to the inner wall 20 of the building behind the rearmost fixed pulley 18;
1 is a winding drum provided on the floor below this stationary pulley 19.

The shaft 23 of the winding drum 21 is connected to a driving means consisting of a motor (not shown) that can rotate in forward and reverse directions.

Reference numeral 25 is a storage cable, for example, a wire, and its front end is a stop provided at the lower end of a mounting frame 26 whose front face is upwardly U-shaped and is suspended from the center of the front part of the floor plate 4a of the frontmost step floor 4. It is fastened to the tool 27, and the rear end is also fastened to the winding drum 21 via the rear lower side of the winding drum 21.

28 is a wire for example, the rear end of which is wound around the winding drum 21 from the rear side, and then fixed to the outer periphery of the winding drum 21, and the front end is connected upward from the winding drum 21 It is wound around the stationary pulley 19 from behind, and then it is wound around the fixed pulleys 18, 17, 16, 15, 14, 13 in order from front to back in this order. A stopper 29 attached to the front lower surface of the floor plate 4a of the step floor 4
It is attached to.

As a result, the drawer cable 28 is bent into a deep zigzag line when stored, and extends in a step-like manner when pulled out.

Reference numeral 30 denotes a stopper provided on the floor, which prevents the rearmost step bed 1 from moving rearward.

Next, the moving device 6 for the leg rod 1c will be explained based on the drawings from FIG. 3 onwards.

Reference numeral 31 denotes three wheels made of urethane rubber, which are arranged at equal intervals in the front-rear direction with the same height and are pivotally connected to a horizontal shaft 32 protruding from the mounting plate 5. The surface is smooth.

33 is a horizontal shaft 34 provided at the front end of the mounting plate 5.
It is a pulley that is pivotally connected to the wheel 31 and has teeth on both sides of its outer peripheral surface, and the width of the portion excluding the teeth is approximately equal to the width of the wheel 31.

On the left and right rear ends of the mounting plate 5, there are adjustment plates 35 in the shape of an inverted L-shape in front, which are made up of an inward horizontal piece 35a and a hanging piece 35b. ), bolt and nut 36
It is attached so that it can be moved back and forth.

A pulley 38 similar to the pulley 33 is pivotally attached to a horizontal shaft 37 passing through the hanging piece 35b.

Both pulleys 33 and 38 are located at a slightly higher level than the wheel 31.

Reference numeral 39 is an endless belt with teeth made of rubber or synthetic resin and having the same width as the pulleys 33 and 38. It has toothed portions 39a on both side edges of its inner peripheral surface and a flat plate portion 39b without teeth in the center. has teeth 3
9a meshes with the teeth of the front and rear pulleys 33, 38, and the upper surface of the flat plate portion 39b in the downward traveling portion is in contact with the lower surfaces of the three wheels 31, and the lower surface is also in contact with the floor surface 40. .

Next, the operation of the above-mentioned movable bleachers will be explained.

When the person sitting on the chair 8 leaves the drawer position shown in FIG. Rotate the entire chair 8 forward to make it horizontal.

After that, the motor is rotated forward and the winding drum 21
When rotated counterclockwise in Fig. 1,
The storage wire 25 is wound onto the winding drum 21 as shown by the arrow, and the extraction wire 28 is unwound.

As a result, the front step bed 4 is stored under the rear step bed 3 and rearward in sequence, and the drawer cable 28
As shown in FIG. 2, there is a deep zigzag-like accommodation state between the fixed pulleys.

When the motor is reversed, the pull-out wire 28 is wound onto the winding drum 21, as shown by the arrow in FIG.
The respective gaps between 3 and 14 become smaller.

That is, as shown in FIG. 1, the drawer rope 28 is let out between the fixed pulleys in a stepwise manner, and each step bed 2, 3, 4 is sequentially pulled out forward and the storage rope 25 is pulled forward.

At this time, each of the back plates 1b to 4b acts as a stopper to prevent the previous step from slipping out from the rear step.

Once the tiers 2, 3, and 4 have been pulled out, the chairs 8 are erected and the seats are unfolded to be used as viewing seats.

In this way, when the berm is pulled out or moved in the direction in which it is stored, the wheels 31 rotate, so the endless belt 39 moves while rotating the pulleys 33 and 38, and the endless belt 39 is grounded. The parts change sequentially.

Note that the movable seats are not accommodated in a nested manner, but may simply be constructed by arranging tiered floors of the same height side by side, or by simply moving a flat floor.

[Effect of idea]

(a) An endless belt that is considerably wider than the wheels is interposed between the wheels and the floor surface, so when the movable seats are moved, the ground contact part of the wheels changes from point contact to surface contact, and the load is reduced. becomes smaller.

(b) The endless belt absorbs shocks such as vibrations from the wheels, so the floor surface will not be damaged or traces left behind.

(c) An endless belt has teeth only on both sides of its inner circumferential surface, and wheels with smooth outer circumferential surfaces are in contact with the flat plate portion of the endless belt. , applying strong pressure to certain parts of the endless belt or the floor will not damage them.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a movable bleacher seat provided with an embodiment of the present invention in a pulled-out state, FIG. 2 is a side view showing the movable bleacher seat in a stowed state, and FIG.
An enlarged side view of the moving device in FIG.
The figure is a vertical sectional view taken along the - line in Figure 3, and
The figure is a vertical sectional view taken along the - line in Figure 3, and
The figure is a partially cutaway side view showing an enlarged view of the toothed belt of FIG. 3. 1-4...Ranked floor, 1a-4a...Floor plate, 1b-
4b...Backboard, 1c to 4c...Legs, 5...Mounting plate, 6...Transfer device, 7...Horizontal rod, 8...Chair, 8a...Legs, 9...Base, 10 ...Rotating shaft, 11...Lever, 13-18...Fixed pulley,
19... Stationary pulley, 20... Inner wall, 21... Winding drum, 23... Shaft, 25... Storage rope, 26
...Mounting frame, 27, 29...Stopper, 28...Drawer rope, 30...Stopper, 31...Wheel,
33, 38...pulley, 35...adjustment plate, 39...
...Endless belt, 40...floor.

Claims (1)

[Scope of Claim for Utility Model Registration] In a movable spectator seat equipped with wheels and capable of being moved on the floor, pulleys having teeth on both sides of the outer peripheral surface are provided at the front and rear ends of the lower part, and between both pulleys. , a plurality of wheels having a width narrower than both pulleys, a smooth outer peripheral surface, and a lower surface located below both pulleys, and an endless belt having teeth on both sides of the inner peripheral surface of the pulleys and wheels. A device for moving a movable spectator seat, comprising: spanning the wheels, engaging the teeth of a pulley with the teeth of an endless belt, and bringing the lower surface of the wheel into contact with a toothless central flat plate on the inner circumferential surface of the endless belt. .