JPH0427965Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a movable spectator seat equipped with a seat upright device such as used in a multi-purpose hall or the like.

[Conventional technology]

BACKGROUND OF THE INVENTION Movable bleachers are known for making multipurpose use of the floors of gymnasiums, halls, and the like.

To summarize this, for example, as shown in FIGS. 5 and 6, a foldable seat a is placed on the top surface, and
A plurality of tiered floors b with different heights equipped with wheels h on the lower surface
are arranged in a step-like manner, and the base end of the lower wire c whose tip is fixed to the front step bed b is wound around the drum d.

The base end of the other upper wire e is attached to the drum d.
Similarly, the leading end is sequentially passed around fixed pulleys f and g attached to the lower and rear surfaces of each tier b, and then fixed to the front tier b'.

The seat, backrest, and armrest of seat a are foldably pivotally connected to a support rod j whose lower end is pivotally connected to step floor b.

When not in use, each part of the seat a is folded and the support rod j is folded forward to make it into a flat horizontal state, and then the lower wire c is wound around a drum d rotated by a driving means (not shown). As shown in FIG. 6, each tier b can be nested one after another under the rear tier b.

Furthermore, when the upper wire e is wound up, each tier b is unfolded forward in a stepwise manner, as shown in FIG. do.

In conjunction with the forward movement of the unfolding step, the seat, which had been folded and lying flat, is
As a seat raising device that automatically raises the seat, one in which a seat and a step floor are connected by a link and a cam is known.

In addition, the pivot i of the support rod j that pivots the seat a is connected to the output shaft of a motor, and by rotating this motor unilaterally, the seat is made to stand up, and by reversing the motor, the seat is made to lie down. There are also some that allow you to do so.

[The problem that the idea attempts to solve]

Among the above-mentioned conventional movable seats, the former has problems in that it has a complicated mechanism, requires time and effort to assemble and adjust, and is expensive.

The latter uses a motor to rotate the shaft.
Since a motor is installed for each tier, the wiring cord must be wound up or fed out each time the tier is moved back and forth to unfold or stow away, making it difficult to process the wiring cord. This requires a complicated mechanism.

Furthermore, as the number of seats increases, the number of motors increases, which inevitably increases costs.

[Means to solve the problem]

In the movable bleachers equipped with the seat upright device according to the present invention, the upper end is attached to the mounting member in the left and right direction that supports the seat, and the middle part is attached to the lock frame fixed to the upper surface of the rear part of the tier, and has a pivot that points left and right. a rocking arm that is pivotally connected to the lock frame and has an engaging piece protruding from its lower end that faces rearward; and a lock lever that is pivotally connected to the lock frame and removably engages with the engaging piece. and a stopper for preventing the swinging arm from rotating rearward from the upright position; the front end is pivotally attached to the mounting member at a proper position, and the rear end is provided with a rear stage. an upright means having a hook that can be releasably engaged with a latch piece provided at the front part of the floor; and as the bunk moves back, the mounting member comes into contact with the front face of the rear bunk, causing the mounting member to fall forward. The seat flattening means is provided on the rear surface of the mounting member so as to allow the seat to lie flat.

[Effect]

When the moving means is used to extend each tier into a staircase shape from the stored state of the movable bleachers, the latch piece provided at the front of the rear tier first connects with the hook on the raising means of the previous tier. When engaged, the mounting member pivots upward about the pivot via the swing arm and stands up. In this way, the seats on each tier are raised in sequence.

After the seat is erected, the engagement piece at the lower end of the swing arm engages with a lock lever pivotally connected to the lock frame. Therefore, the seat does not rotate forward, and the stopper of the locking means prevents the seat from rotating rearward, resulting in a stationary state, and the seat can be used.

When each tier is moved to the rear using a moving means, the lock lever and swing arm are first unlocked, and then the front of the rear tier is moved from the front to the rear for storage. The member is pushed down via the seat flattening means. Therefore, the seat is in a prone position.

Each tier is thus nested in sequence beneath the rearmost tier.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

1 is a movable seating area, which consists of a required number of tiered beds placed one behind the other so that the seats in the front are lower. FIG. 2 representatively shows the tiered floor 2 and the tiered floor 3 located downstream thereof.

Each step bed 2, 3 consists of horizontal base plates 2a, 3a having a predetermined thickness, and a downward U-shaped frame member (not shown) that supports these, and is driven by wheels provided on the lower surface of the frame member. , which can be moved back and forth on the floor.

The means for moving the tiered floors 2 and 3 of such movable bleachers has already been described as a conventional example in FIGS. 5 and 6, so a detailed explanation will be omitted.

Seat raising means 4 and locking means 5, which will be described later, operate in conjunction with each step floor 2, 3, respectively. First, the erecting means 4 will be explained.

Reference numeral 6 shown in FIG. 1 is a lock frame having an upwardly facing U-shape when viewed from the front, which is fixed to the upper surface of the step floor 2 near the rear.
A horizontal pivot 7 passes through a.

Reference numeral 8 denotes a swinging arm made of a rectangular tube, the lower end 8a of which is pivotally connected to the pivot 7, and an engaging piece 8b whose free end tapers toward the rear from the rear surface of the lower end 8a. is provided protrudingly, forming an L-shape when viewed from the side.

Reference numeral 9 denotes a seat mounting member made of a rectangular tube facing left and right, and a horizontal piece 9a is provided on the rear edge of the upper surface, and a hanging piece 9b is provided on the lower edge of the front surface.
The front corner of the swing arm 8 is fixed, so that the mounting member 9 can freely rotate back and forth.

A plurality of columns 10 are erected on the mounting member 9 at equal intervals in the left and right direction, and between the adjacent columns 10, there is a seat consisting of a seat 11a and a back 11b, which are always given a tendency to fold up by means of a spring or the like. 11 are arranged.

Reference numeral 12 denotes a mounting frame, which is formed of a vertical plate 12a and left and right side plates 12b, 12b, and has a groove shape with an open rear surface. It is fixed to the horizontal piece 9a with bolts and nuts 13.

Side plates 12b, 12b in mounting frame 12
A roller 15 serving as a seat flattening means is attached to the outer periphery of the central portion of a shaft 14 passing through the lower part of the seat.

A front end portion of a hook 16 having a forward-facing engagement claw 16a on the rear upper edge is pivotally attached to the outer periphery of the right end portion of the shaft 14 protruding from the side plate 12b of the mounting frame 12, and this hook 16 serves as a means for raising the seat. It is becoming.

At the lower front of the mounting frame 12, legs 17 made of grooved material that slope downward in the front are connected.
A wheel 18 is attached to the lower end of the step 7, which rotates around a horizontal axis and rolls on a raised bed 2b provided on the upper surface of the stepped bed 2.

19 is a torsion spring, and one leg piece 19a is
The other leg piece 19 is locked to the middle part of the leg 17.
b is locked to the intermediate portion of the hook 16 and applies a biasing force to the hook 16 to narrow the opening angle between the two.
is granted to.

A stopper 20 is provided on the upper right side surface of the leg 17, and the lower surface of the front end of the hook 16 comes into contact with the stopper 20, so that the engaging claw 16a is held at a predetermined height when the step bed 2 is stored. keeping.

A locking piece 21 having a protruding piece 21a facing rearward is attached to the back surface of the front plate 3c of the step floor 3, and the engaging claw 16a of the hook 16 enters into the movement locus of this protruding piece 21a. ing.

Therefore, as shown by the solid line in FIG. 2, when the tiered floor 2 is pulled forward from the storage position where the tiered floors 2 and 3 are stacked one above the other, the hooking piece 21 of the tiered floor 3 is relatively The state is the same as when the hook 16 moves backward, and the protruding piece 21a engages with the engaging claw 16a to pull the hook 16 backward, as shown by the imaginary line.

The wheels 18 of the legs 17 that are leaning forward are on the raised floor 2.
By rolling on b, the roller 15 becomes tilted backwards, and when the roller 15 loses contact with the lower surface of the intermediate girder 3d of the bunk bed 3, it becomes free and the swinging arm 8 rotates. It floats upward.

At the position where the step bed 2 has finished advancing, the hook 16
As a result, the swinging arm 8 is raised, and the seat 11 is raised up and ready for use as shown in FIG.

Next, the locking means 5 for preventing forward rotation of the swing arm 8 will be explained based on FIGS. 3 and 4.

As shown in FIG. 4, a pair of left and right brackets 22, 22 are provided at the center of the inner surfaces of the side plates 6a, 6a of the lock frame 6, projecting inwardly. A stopper 23 made of an elastic material and inclined upward is provided in a protruding manner.

On both sides of the upper and lower intermediate parts of the swing arm 8,
Horizontal rods 24, 24 facing in the left-right direction are provided protrudingly, and the third
As shown by the imaginary lines in the figure, when the swing arm 8 stands up, these horizontal rods 24 hit the stopper 23, preventing it from falling backward.

Reference numeral 25 denotes a torsion spring loosely fitted to the outer circumferential surface of the pivot shaft 7 on both sides of the swing arm 8, one leg piece 25a of which is attached to the horizontal rod 24 and the other leg piece 25b.
are respectively locked to the lower surface of the bracket 22, urging the swing arm 8 in the upright direction, that is, in the clockwise direction in FIG. 3.

A small frame 26 that is smaller in size and has a similar shape is fixed to the center of the bottom surface 6b of the lock frame 6, and a middle part of a lock lever 28 is pivoted to a pivot 27 that passes through the small frame 26 from side to side. has been done.

The upper end of the lock lever 28 is provided with the intermediate beam 3.
A roller 29 that comes into contact with the lower surface of b is attached,
And by the torsion spring 30 fitted into the pivot 27,
Fig. 3: Always biased clockwise.

Reference numeral 31 denotes a stop lever having a parallelogram shape when viewed from the side, the lower end of which is pivotally connected to a shaft 32 passing through the lower front surface of the small frame 26 from side to side. Always 3rd
It is biased clockwise in the figure, and its upper end surface can freely approach and separate from the lower end surface of the lock lever 28.

As shown by the imaginary line in Figure 3, the lock lever 2
8 is free, the lock lever 28 is prevented from tilting backward.

Therefore, in the stowed position of the tiered floors 2 and 3 shown in FIG. If it is, it will be canceled.

Furthermore, as shown by the imaginary line in FIG.
The engaging piece 8b of the swing lever 8 is connected to the lock lever 28.
It has a locking function that prevents the seat from rotating forward.

In the above-mentioned embodiment, the roller 15 serving as the seat flattening means is attached to the mounting frame 12 to which the hook 16 is pivotally attached.
5 may be separated from the upright means 4 of the embodiment and installed at an appropriate separate location on the mounting member 9.

[Effect of idea]

The movable bleachers equipped with the seat raising device according to the present invention are locking means and raising means that operate in conjunction with each tier when storing the tiers one above the other or extending each tier in a stair-like manner. , and seat prostrate means can be installed separately and independently.

Therefore, if the number of seats is large and the mounting members are long, the number of raising means may be increased, and if the number of seats is small and the mounting members are short, specifications may be changed such as installing one of each. It's easy to do.

In addition, the installation location can be freely changed in response to changes in specifications, such as installing various means of the seat upright device, in accordance with the mounting location of the hooking piece on the step bed side or the arrangement of the intermediate girder.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing the upright state of the upright means in an embodiment of the present invention, FIG. 2 is a partially cutaway side view showing the same stored state, and FIG.
FIG. 4 is a partially cutaway side view showing the locking means in the stored state; FIG. 4 is a partially cutaway plan view showing the seat upright device; FIG. 5 is a schematic side view showing the specifications of a conventional movable bleacher seat. , FIG. 6 is a schematic side view similarly showing the stored state. DESCRIPTION OF SYMBOLS 1...Movable bleachers, 2, 3...Ranked floor, 4...Rising means, 5...Lock means, 6...Lock frame, 7...Pivot, 8...Swing arm, 8b...Engagement Piece, 9... Mounting member, 10... Support, 11...
Seat, 12...Mounting frame, 14...Axle, 15
...roller, 16...foot, 17...leg, 1
8... Wheel, 19... Torsion spring, 20... Stopper, 21... Latching piece, 22... Bracket, 23
... Stopper, 24 ... Horizontal rod, 25 ... Torsion spring, 26 ... Small frame, 27 ... Axis, 28 ...
... Lock lever, 29 ... Roller, 30 ... Torsion spring, 31 ... Stop lever, 32 ... Shaft,
33...Torsion spring.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Consists of a plurality of tiers of different heights with foldable seats arranged in the left and right direction, and means for moving the tiers, and when stored, the seats are laid flat and the tiers are The floors can be nested one above the other, and when pulled out,
It is a movable spectator seat in which the seats are made to stand up by extending each tier in the form of a staircase in the front, and the upper end is attached to a mounting member in the left and right direction that supports the seat, and the middle part is attached to the rear part of the tier. A swinging arm is pivotally connected to a lock frame fixed to the upper surface with a pivot pointing left and right, and has an engaging piece projecting from the lower end thereof facing backward; a lock means comprising a lock lever that detachably engages with the engagement piece; and a stopper that prevents the swing arm from rotating rearward from the upright position; and a raising means having a hook at the rear end that can be releasably engaged with a latch piece provided at the front part of the rear berm; In order to be able to contact the front surface and cause the mounting member to fall forward,
1. A movable spectator seat equipped with a seat upright device, characterized in that it is provided with a seat flattening means provided on the rear surface of the mounting member. (2) A movable spectator seat equipped with a seat raising device according to claim (1), wherein the seat lowering means is a roller. (3) A movable spectator seat equipped with a seat upright device according to claim (1) or (2), wherein the swinging arm of the locking means is biased in the upright direction. (4) The hook according to claim (1), wherein the hook in the raising means is attached to the attachment member via an attachment frame, and the attachment frame is connected with legs having wheels that roll on the upper surface of the step bed. Mobile bleachers equipped with seat-erectors. (5) The erecting means engages leg pieces on the hook and the leg, respectively, and a spring is stretched between the two, in order to hold the engaging claw at the rear end of the hook at a predetermined height from the step floor; and a stopper provided on the leg to lock the front end of the hook. 5. A movable spectator seat equipped with a seat upright device according to claim 4.