JPH10121757A - Coupling device for up-and-down type stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold an up-and-down type stand stably even when various shaking are generated by a simple constitution. SOLUTION: In the coupling devices for the up-and-down type stands, seats are installed, and a plurality of the up-and-down type stands 1 or 6 capable of being lifted and lowered mutually independently are connected. Sliding shafts 1c or 6c mounted on one of the adjacent up-and-down type stands 1 or 6 and sliding bearings 1d or 5d being set up to the others of the adjacent up-and-down type stands 1 or 6 and capable of being vertically slid along the sliding shafts 1c or 6c are installed at that time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for an up / down seat that connects a plurality of up / down seats which are provided with seats and can be raised and lowered independently of each other.

[0002]

2. Description of the Related Art FIG. 9 is a side view showing a state in which a plurality of conventional raised and lowered seats are arranged in the front-rear direction. Indicates that the lower one is located forward. In the figure, 1
00 is a container beam for installing and storing seats, 10
Reference numeral 1 denotes an elevating leg for elevating and lowering the container beam, and reference numeral 102 denotes a roller provided at the lower end of the elevating leg 101 for moving laterally on a base.

FIG. 10 is a sectional view taken along the line EE in FIG.
Although two container beams are shown in FIG. 10, the container beam located at the rear is distinguished as 100A and the container beam located at the front is identified as 100B. The configuration of the lifting leg will be described with reference to FIG. The elevating leg 101 is rotatably attached to the container beam at the upper part, and is installed at the lower part so as to be movable in the lateral direction by the roller 102. And the lifting leg 10
One end of a branch leg 101b is rotatably attached to an intermediate portion of the branch leg 101b by a pin joint 101a.
The other end of 1b is rotatably held by a base anchor 104.

A lifting leg 10 is provided above the lifting leg 101.
The hydraulic cylinder 101c is attached to and retracted from the hydraulic cylinder 101c, and the lifting leg 101 expands and contracts to move the container beam 101 up and down.

[0005]

The conventional seats of the up-and-down type are configured as described above, and the up-and-down seats which can be raised and lowered independently of each other are independent of each other and are not connected. Therefore, in order to cope with various shakes caused by the movement of the audience and other objects on the grandstand during an earthquake, each grandstand has to have the necessary rigidity and strength. Therefore, measures such as using a material having high strength or using a reinforcing material are required, and there has been a problem that the cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and has a simple structure and an up-and-down-type spectator capable of stably holding the up-and-down-type spectator even when various swings occur. Is obtained.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a connecting device for an upside-down seat, which is provided with a seat and connects a plurality of up-and-down seats which can be raised and lowered independently of each other. And a slide shaft provided on one of the adjacent raised / lower seats, and a slide bearing provided on the other of the adjacent raised / lower seats and capable of sliding up and down along the slide shaft. It becomes.

The slide bearing has a hole into which the slide shaft is inserted, and stoppers are provided at both ends of the slide shaft to prevent the slide bearing from falling off. It is a thing.

[0009] Further, a plurality of undulating grandstands adjacent to each other,
It is characterized by being arranged in the front-back direction.

[0010] Further, a plurality of adjacent up-and-down seats are arranged in the left-right direction.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view for explaining the principle of the present invention.
FIG. 2 is a plan view of a part of the plurality of undulating seats shown in FIG. In FIGS. 1 and 2, reference numerals 1 to 6 denote undulating seats, each of which is installed on a base 7. The up-and-down seats 1 to 6 are respectively composed of elevating mechanisms 1a to 6a installed on a base 7 and containers 1b to 6b installed at upper ends of the elevating mechanisms 1a to 6a and seats are installed and stored. I have. Further, slide shafts 1c to 6c extending in the vertical direction of the containers are provided near both sides on the front surface of each of the containers 1b to 6b.
Slide bearings 1d to 5d that are inserted into slide shafts 2c to 6c provided in adjacent containers and slide in the vertical direction are provided near both sides of the rear surfaces of the members b to 5b. As shown in FIG. 2, each of the up-and-down seats is connected to each other near both sides of the front and rear surfaces by a slide shaft and a slide bearing.

FIG. 3 is an enlarged view of a main part of this embodiment, and shows a slide bearing 1d and a slide shaft 2c connecting the up-and-down type seats 1 and 2 shown in FIG. Hereinafter, the slide bearing 1d and the slide shaft 2c will be described with reference to FIG.
And their engagement relationship will be described. Slide shaft 2
c is a columnar shape, and is provided vertically above and below the container 2b in a vertically extending recess 2e provided on the front surface of the container 2b. One end of the slide bearing 1d is fixed to the rear surface of the container 1b (see FIG. 1 or 2), and has a cylindrical hole at the other end, into which the slide shaft 2c is inserted. The ride bearing 1d is configured to be able to slide in the recess 2e along the slide shaft 2c. As can be seen from FIG. 3, the upper and lower ends of the slide shaft 2c are fixed to the container 2b, and the container 2b serves as a stopper for preventing the slide bearing 1d from falling off the slide shaft 2c.

As described above, by slidably inserting the slide bearing 1d into the slide shaft 2c, the containers 1b, 2b are constrained to each other in the front-rear and left-right directions. Therefore, strong rigidity can be secured. In addition, slide bearing 1
Since d is configured not to fall off from the slide shaft 2c, it is possible to prevent the up-and-down-type seat from being erroneously moved downward.

Next, referring to FIG. 1 again, a description will be given of the arrangement relationship of each of the up-and-down seats 1 to 6. In the arrangement relationship of the up-and-down seats shown in FIG. 1, the up-and-down seats 1 in the front row and the up-and-down seats 2 in the second row are the most lowered. At this time, the upper surfaces of the container 1b and the container 2b are flush as shown in FIG. The up-and-down seats 3 to 6 in the third and subsequent rows are installed in a step-like manner as shown in FIG.

Next, a description will be given of a method of installing the raised and lowered seats in a step-like manner as shown in FIG. At first, all the up-and-down seats 1 to 6 are in the most lowered state (the state of the up-and-down seats 1 or 2 in FIG. 1). From this state, the up-and-down seats 3 to 6 are simultaneously started to rise, and stopped when they reach a predetermined height from those arranged in the front row. In this way, by stopping in order from the one arranged on the front row side, it can be installed in a stepwise manner as shown in FIG. When lowering the up-and-down-type seats, all the up-and-down-type seats may be lowered at the same time, contrary to the above case.

FIG. 4 is a side view of a specific embodiment based on the above-described principle of the present invention.
The state where 0 to 60 are connected is shown. FIG. 5 is a front view of the up-and-down type grandstand 20 arranged in the front row shown in FIG.
FIG. 6 shows an up-and-down seat 2 arranged in the front row shown in FIG.
0 is a right side view of FIG. Note that all of the five up-and-down seats 20 to 60 shown in FIG. 4 have the same configuration, and therefore, the configuration will be described below using the up-and-down-type seats 20 arranged in the front row as an example.

In FIGS. 4 to 6, reference numeral 21 denotes a container, which is constructed by combining beams to form a skeleton. Reference numeral 22 denotes a chair installed in the container 21 and capable of being stored in the container, and reference numeral 23 denotes an elevating mechanism for elevating the container 21. The details of the container 21 will be described.
Reference numeral 1c denotes a slide shaft provided near the both sides on the front surface of the container 21 and extending in the vertical direction of the container 21.
Is a slide bearing inserted into a slide shaft 30c provided in the container 31 disposed behind the container 21.

FIG. 7 is an enlarged view of a portion A in FIG. 5, and FIG. 8 is an enlarged view of a portion B in FIG. Details of the installation portion of the slide shaft 21c and the slide bearing 21d will be described with reference to FIGS. The slide shaft 21c is composed of an upper beam 21e and a lower beam 2 constituting a horizontal frame of the container 21.
Both ends are fixed to 1f. Also, the slide bearing 21
d is 21 g which constitutes the vertical skeleton of the container 21
Attached to the top of the The slide shaft 21c
The shape of the slide bearing 21d itself is the same as that of the slide shaft 2c and the slide bearing 1d shown in FIG.

Next, the structure of the lifting mechanism 23 will be described with reference to FIG. In FIG. 5, reference numerals 24a and 24b denote a pair of L-shaped support members opposed to each other at a lower portion of the container 21. One end of a long side is slidably attached to the container 21, and the bent portion is rotatable on the base. Installed. Reference numerals 25a and 25b denote rollers provided at one end of the long sides of the L-shaped support members 24a and 24b, which can move horizontally on a rail (not shown) provided at the lower part of the container 21.

Reference numerals 26a and 26b denote a pair of support members disposed opposite the lower portion of the container 21. One end of the pair of support members 26a and 26b is rotatably attached to a position inside the support points of the L-shaped support members 24a and 24b in the container 21. The other end is slidably mounted on a rail (not shown) provided on the base. 27a, 27b are supporting members 26a, 26
b is a roller provided at the other end of the roller 27.
a, 27b can slide horizontally on the rails. This rail is an L-shaped support member 24.
The L-shaped supporting members 24a, 24b and the supporting members 26a, 26b cross each other and are rotatable at their respective central portions. Is pin-connected.

Reference numeral 28 denotes a drive cylinder for connecting one end of each of the short sides of the L-shaped support members 24a and 24b via connecting members 29a and 29b. An electric motor 28a drives the driving cylinder 28.

The operation of the present embodiment configured as described above will be described. To raise the container 21 from the lowered state, the electric motor 28a is driven to reduce the drive cylinder 28, and a tensile load is applied to one end of the short side of the L-shaped members 24a, 24b. When a tensile load is applied, the L-shaped members 24a and 24b rotate around the bent portion as a fulcrum, and a roller 25 provided at one long side of the L-shaped members 24a and 24b is provided.
a and 25b move inward on rails provided at the lower part of the container 21 to raise the container 21. At this time, the support members 26a, 26b are connected to the L-shaped members 24a, 24a.
The container 21 receives an internal horizontal force from the pin b through a pin, and rotates inward around a rotation point on the lower surface of the container 21. Then, rollers 27a and 27b attached to one ends of the support members 26a and 26b move inward on rails on a base (not shown). In this manner, the container 21 gradually rises from the lowered state, and is stopped at the predetermined height to stop the electric motor 28a at the predetermined height, thereby setting the predetermined height.

With the above-described operation, the up-and-down seats 20 arranged in the front row to the up-and-down seats 60 arranged in the last row are raised to a predetermined height. At this time, as described in FIGS. 1 to 3, the slide bearing provided in each container is inserted into the slide shaft provided in the container adjacent to each container and slides along the slide shaft. Rises in a connected state. In order to lower the up-and-down-type spectator seats, the drive cylinders 28 of all the up-and-down-type spectator seats are extended so as to perform an operation opposite to the above-described ascending operation.

According to the elevating mechanism of the present embodiment as described above, only one drive cylinder 28 is used and the container 21 is used.
Can be raised and lowered, and the structure is simplified, so that complicated control is not required, and the production cost can be reduced. Further, since only a tensile load acts on the drive cylinder 28 and no compressive load acts on the drive cylinder 28, there is no fear of buckling on the drive cylinder 28, the cylinder diameter can be reduced, and the cost can be reduced. Further, the L-shaped support member 26
Since the connecting members 29a and 29b are interposed between each end of the drive cylinder 28 and one end of the drive cylinder 28, an impact force is generated between the L-shaped support members 26a and 26b and the drive cylinder 28 when the container 21 starts to rise. Can be prevented,
L-shaped support members 26a, 26b at the end of lowering of the container
The use of unnecessary axial force on the L-shaped support member 2 can be prevented.
The life of 6a and 26b can be extended.

In the above embodiment, the slide shaft and the slide bearing are provided at both ends in the longitudinal direction of the container. However, the present invention is not limited to this. The slide shaft may be provided at a position inside the part, and the slide bearing may be provided at a position corresponding to the slide shaft of an adjacent container.

Further, in the above-described embodiment, an example is shown in which a plurality of undulating seats arranged in the front-rear direction are connected, but a plurality of undulating seats are arranged in series in the left-right direction of the container. These may be connected to each other.

[0027]

As described above in detail, according to the present invention, the connecting device is connected to the slide shaft provided on one of the up-and-down-type seats and the slide shaft provided on the up-and-down-type seat. Since it is constituted by the slide bearing which can slide up and down along, the up-and-down-type seat can be stably held with a simple structure and even when various swings occur.

Further, since the slide bearing has a hole into which the slide shaft is inserted and both ends of the slide shaft are provided with stopper portions for preventing the slide bearing from falling off, each of the up-and-down-type seats is provided. Can be prevented from accidentally moving downward.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating the principle of the present invention.

FIG. 2 is a plan view of a part of FIG.

FIG. 3 is an enlarged view of a main part of the embodiment of the present invention.

FIG. 4 is a side view of one embodiment of the present invention.

FIG. 5 is a front view of a part of the undulating seat shown in FIG. 4;

FIG. 6 is a right side view of FIG.

FIG. 7 is an enlarged view of a part of FIG. 5;

FIG. 8 is an enlarged view of a part of FIG. 6;

FIG. 9 is a side view of a conventional liftable movable seat device.

10 is a sectional view taken along the line EE in FIG. 9;

[Explanation of symbols]

 1,2,3,4,5,6 Raised seats 1a, 2a, 3a, 4a, 5a, 6a Elevating mechanism 1b, 2b, 3b, 4b, 5b, 6b Containers 1c, 2c, 3c, 4c, 5c, 6c slide shaft 1d, 2d, 3d, 4d, 5d slide bearing

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenichi Murano 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd.

Claims (4)

[Claims] 1. A connecting device for an up-and-down spectator seat provided with a seat and connecting a plurality of up-and-down spectator seats capable of ascending and descending independently of each other, provided at one of the adjacent up-and-down spectator seats. An up-and-down seat connection device, comprising: a slide shaft; and a slide bearing provided on the other of the adjacent up-and-down seats and capable of sliding up and down along the slide shaft. 2. The slide bearing has a hole into which the slide shaft is inserted, and stoppers are provided at both ends of the slide shaft to prevent the slide bearing from falling off. The connecting device for an up-and-down seat according to claim 1. 3. The connecting device according to claim 1, wherein a plurality of adjacent lift-type seats are arranged in the front-rear direction. 4. The connecting device according to claim 1, wherein a plurality of adjacent lift-type seats are arranged in the left-right direction.