JP2661585B2 - Moving bleachers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable seat used in a gym or a multipurpose hall.

[0002]

2. Description of the Related Art Recently, various types of movable seats for multipurpose use in a gymnasium or the like have been developed. In this type of movable spectator seat, for example, the left and right ends of stepped floors having different heights are supported by movable traveling frames, and each of the stepped floors is developed in a tiered step by the reciprocating operation of the traveling frame. To make the seats installed on each corrugated floor usable,
Each of the floors is retracted to a position where the front panels provided at the front ends thereof are substantially flush with each other, and can be stored compactly.

[0003] In this type of movable seat, a notch is provided in a front panel of each step floor so that it can be moved on each step floor, and an elevating passage is formed along the notch. doing.

[0004]

However, if a notch is present in the front panel, the wall-like body formed by the vertically arranged front panels when the respective floors are retracted and stored until they are vertically stacked. Is greatly impaired by the presence of the notch. In addition, when such a notch exists, there is also a problem that foreign matter easily enters the notch and causes a failure.

In order to cope with such inconvenience, for example, as disclosed in Japanese Utility Model Publication No. 63-16785, an auxiliary step having substantially the same front shape as the cutout portion is movably provided on each floor. The auxiliary step is configured to be positioned in the latter half of the bunk floor in the use state and in the first half of the bunk floor in the storage state, so that the notch can be closed by the auxiliary step in the storage state. Some have been developed.

[0006] However, in such a conventional device, in order to drive the auxiliary step, a fixed distance is set between the lower step and the auxiliary step and between the upper step and the auxiliary step in the front-rear direction. A stopper mechanism that allows the relative advance / retreat operation is configured. For this reason, there is a restriction that the depth of the auxiliary step must be approximately の of the depth of each floor. If such a configuration is to be applied to auxiliary steps having different sizes, the advance / retreat strokes of the respective stopper mechanisms must be different according to the size of the auxiliary steps. It is difficult to respond to the steps easily.

An object of the present invention is to provide a movable spectator seat capable of solving such a problem.

[0008]

In order to achieve the above object, the present invention takes the following measures.
That is, the movable seat according to the present invention includes a plurality of stepped floors each having a front panel at the front edge, and these stepped floors are deployed in a stowed position with a storage position where the front panel is substantially flush. In the movable viewing seat configured to extend and retract between the use position and the drive shaft, the seat on the corrugated floor is selectively turned up and down between the use position and the storage position by the rotation of the drive shaft. A cut-out portion in which each floor is cut out of a predetermined portion of the front panel from an upper edge to a position flush with the floor surface of the floor floor, and the cut-out portion movably disposed on the floor surface back and forth. And an operation converting mechanism for connecting the drive shaft and the auxiliary step, the auxiliary step having substantially the same front surface shape as the front surface. Steps almost match front to front of front panel A storage position in which, characterized by comprising configured to move back and forth between a use position to approach the trailing edge to the front panel of the stage floor of the upper side.

One specific embodiment of the motion conversion mechanism is a pantograph.

[0010]

With such a structure, the auxiliary step is selectively moved to the storage position and the use position simultaneously with the seat by the rotation of the drive shaft, so that the auxiliary step can be moved quickly. And, when used, it exists between the floors and functions as an auxiliary step, and when stored, the front surface of the auxiliary step advances into the cutout portion to appropriately close the opening of the front panel. Become.

Since the auxiliary step is driven back and forth by the operation conversion mechanism, the auxiliary step having an arbitrary size and shape can be dealt with only by changing the design of the operation conversion mechanism. The size and shape of the auxiliary step are not restricted by the relative positional relationship with the floor and the like.

In particular, when a pantograph type is adopted as the operation conversion mechanism, the rotation of the drive shaft can be effectively converted into the back and forth movement of the auxiliary step by a simple mechanism, and the pantograph is constituted. It is possible to freely set the expansion / contraction stroke simply by changing the position of the pivotal connection to the link member.

[0013]

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

As shown in FIGS. 1 and 2, the movable seat has a plurality of stepped floors 2 each having a front panel 1 at a front edge 2a. It is configured to be able to expand and contract between a storage position (see FIG. 2) that is substantially flush and a use position (see FIG. 1) that is deployed in a tiered manner, and travels to support each floor 2. Since the structure of the frame 3 and the drive mechanism 4 for moving the respective traveling frames 3 forward and backward are the same as those of the related art, description thereof will be omitted.

The corrugated floor 2 has a floor plate 21 on the upper surface, and a seat unit 22 on the rear half of the floor plate 21. The seat unit 22 has a unit frame 23 in which a column 24 is held so as to be able to be turned upside down.
5, the seat 25 is folded flat and falls down on the floor 2b. When the column 24 is turned rearward from the storage position A shown in FIG. It stands up and stops at the use position B shown in FIG. The raising and lowering operation of each of the columns 24 is configured to be performed at the same time in accordance with the forward and reverse rotation operation of the drive shaft 26 inserted through the unit frame 23. This drive shaft 26 is
The floor 2 is inserted from one end to the other end.
For example, a driving source such as a motor (not shown) provided at one end performs a forward / reverse rotation operation within an angle range of 90 degrees, for example. The front panel 1 is fixed to the front edge 2a of the floor 2 and its upper edge 1a is positioned higher than the floor 2b and is close to the lower surface of the upper floor 2.

[0016] In the mobile seat thus constructed,
In this embodiment, as shown in FIG. 3 and FIG.
The front panel 1 is provided with a notch 5 in which a predetermined portion of an upper edge 1a is cut out, and an auxiliary step 6 is provided on the floor 2b of the step floor 2 so as to be movable back and forth. The auxiliary step 6 is driven by a pantograph 7, which is a motion conversion mechanism interposed between the auxiliary step 6 and the drive shaft 26, and the front surface 6a of the auxiliary step 6 is substantially flush with the front surface 1b of the front panel 1. The rear edge 6b of the auxiliary step 6 is moved back and forth between a use position b (see FIG. 3) close to the front panel 1 of the upper step floor 2 (see FIG. 4).

The notch 5 is formed by cutting a predetermined portion of the front panel 1 from the upper edge 1a so as to be flush with the floor 2b.

As shown in FIG. 5, the auxiliary step 6 is a flat box type, and two main casters 61 can be rotated forward and two auxiliary rollers 62 can be rotated rearward near the left and right ends of the lower surface. To the floor surface 2b of the corrugated floor 2
It is arranged movably back and forth above.

The pantograph 7 has front and rear main links 7.
As shown in FIG. 5, the rear end 7a is connected to the floor 2b near the drive shaft 26, and the front end 7b is connected to an auxiliary step 6 as shown in FIG.
Are rotatably connected to the lower surfaces near the left and right ends, respectively, and a main link 72 of which is connected via a power link 75 and a drive link 76 to a drive shaft 26 that raises and lowers the seat 25, and 26 is converted into a forward / backward enlargement / reduction operation. In particular,
The power link 75 has a front end 75a connected to the rear main link 7.
2 and the rear end 75b is connected to the drive shaft 26.
At the rear end 7.
The rear pantograph 7 is configured to rotate the rear main link 72 as the drive shaft 5b moves back and forth with the rotation of the drive shaft 26 to expand and contract the entire pantograph 7.

Next, the operation of this embodiment will be described.

When the movable seat is unfolded, first, the bunk floor 2 is unfolded in the form of a nest, and then the drive shaft 26 is rotated by approximately 90 ° to erect the column 24 in the overturned state. The seat 25 is made usable. At this time, the pantograph 7 contracts and each auxiliary step 6 retreats to the use position b shown in FIG. 3, and the floor surface 2 b of the corrugated floor 2, the upper surface 6 c of the auxiliary step 6, and the floor surface of the upper corrugated floor 2 2b are sequentially arranged in a step-like manner, and a smooth ascending / descending walking becomes possible. When storing, first, the drive shaft 26 is connected to the support 2.
4 is rotated approximately 90 degrees in the direction in which the seat 2 rotates forward, and the seat 2 is rotated.
5 is lowered onto the floor 2b, the pantograph 7 is expanded, and each auxiliary step 6 is advanced to the storage position a shown in FIG. 4, and thereafter each floor 2 is retracted. At this time,
The auxiliary step 6 advances into the notch 5, and the opening of the front surface 1b of the front panel 1 is closed.

With the movable viewing seat having such a configuration, the auxiliary step 6 is selectively moved to the storage position a and the use position b in conjunction with the seat 25 by the rotation of the drive shaft 26. Driving can be performed. In use, the auxiliary step is interposed between the steps 2 to perform an appropriate function as an auxiliary step, and when stored, the front surface 6a of the auxiliary step 6 advances into the notch 5 and the front 1
Therefore, the appearance of the wall-like body formed by the front panel 1 can be improved, and foreign matter can be prevented from entering through the cutout portion 5 at the same time.

In this apparatus, the rotational power of the drive shaft 26 is converted into the forward / backward movement of the auxiliary step 6 by the pantograph 7, so that the auxiliary step 6 can be driven by a simple mechanism and the pantograph 7 can be driven. The telescopic stroke can be freely set only by changing the pivot position of the power link 75 connecting the link member 72 and the drive link 76 which are the components of the seventh embodiment. Therefore, it is possible to very easily cope with the auxiliary step 6 having an arbitrary size and shape.

The configuration of the present invention is not limited to the above-described configuration. For example, the configuration of the motion conversion mechanism is not limited to the present embodiment, but may be such that the auxiliary step is moved back and forth by a hydraulic cylinder or the like. Further, the auxiliary step is not necessarily limited to a box-like one opened backward. However, in this way, the motion conversion mechanism can be provided in the auxiliary step, and the space can be effectively used. Furthermore, the number of steps and the structure of the corrugated floor are not limited to those of the present embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0025]

As described above in detail, the movable viewing seat according to the present invention allows the auxiliary step to be quickly moved to the storage position and the use position at the same time as the seat by rotating the drive shaft. Then, at the same time that the proper function as the auxiliary step is ensured during use, the auxiliary step is advanced into the notch at the time of storage, and the front surface of the auxiliary step and the front surface of the front panel are arranged substantially flush, and formed by the front panel. It is possible to prevent the notch portion which deteriorates the appearance and causes a failure from being present in the wall-shaped body. Further, since the auxiliary step is driven back and forth by the operation converting mechanism, it is possible to very easily cope with an auxiliary step having an arbitrary size and shape only by changing the design of the operation converting mechanism. For this reason, it is easy to reduce the depth dimension of the auxiliary step, and it is possible to accurately respond to recent demands for securing a passage in a direction perpendicular to the elevating direction.

As described above, the present invention makes it possible to easily realize a drive mechanism for appropriately driving an auxiliary step having an arbitrary shape, thereby closing the cutout portion during storage to improve the appearance. This provides a special effect that the size and shape of the auxiliary step can be appropriately selected in accordance with the purpose and application while improving the level.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of the present invention and in use.

FIG. 2 is a schematic side sectional view of a stored state corresponding to FIG.

FIG. 3 is a perspective view showing a main part of the embodiment.

FIG. 4 is a perspective view showing a main part of the embodiment.

FIG. 5 is a plan sectional view showing an auxiliary step of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front panel 1a ... Upper edge 2 ... Step floor 2a ... Front edge 2b ... Floor surface 5 ... Notch part 6 ... Auxiliary step 6a ... Front surface 6b ... Rear edge 7 ... Motion conversion mechanism (pantograph) 25 ... Seat 26 ... Drive shaft A, a: storage position B, b: use position

Claims (2)

(57) [Claims] 1. A plurality of stepped floors each having a front panel at a front edge thereof, wherein the stepped floor is arranged between a storage position where the front panel is substantially flush and a use position where the front panel is deployed in a tiered manner. A movable seat that is configured to selectively extend and retract a seat on a bunk floor between a use position and a storage position by rotating a drive shaft while extending and retracting between the bunk floors. A cutout portion cut out from a top edge of the predetermined portion of the front panel to a position flush with the floor surface of the corrugated floor,
An auxiliary step having a front surface shape substantially the same as that of the notch portion movably disposed on the floor front and rear, and an operation conversion mechanism for connecting the drive shaft and the auxiliary step, In conjunction with the raising and lowering of the seat due to the rotation, the auxiliary step includes a storage position where the front surface substantially matches the front surface of the front panel, and a use position where the rear edge approaches the front panel of the upper floor. A movable seat, configured to move back and forth between them. 2. The mobile seat according to claim 1, wherein the motion conversion mechanism is a pantograph.