JPH0421482Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for movable spectator seats installed on the floor of a multipurpose hall or the like.

[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 and the purpose, allowing the entire floor to be used or only partially. be made to do something.

This type of spectator seating is constructed by folding chairs arranged in a stair-like manner, and then storing the tiered floor that supports the chairs in a nested manner under the rear tiered floor. Are known.

[Problem that the invention attempts to solve]

The nested seats as described above have a small effective area because the floor space for installing the ultimately folded seats and the moving device for moving them in and out is not available.

For this reason, there are some systems in which the bleachers are stored in a pull-out manner under the elevating floor, allowing the entire floor to be used. In this case, it is necessary to make the storage space under the floor as compact as possible, so the depth of the leg rods that support the seats in the bleachers should be made as short as possible, but doing so will impair the stability of the chairs during installation. There is a problem that

[Means for solving the problem] The mounting structure of the movable bleachers according to the present invention has a pair of left and right legs each having a leg rod at the lower end whose lower surface is in contact with the floor, and supports a seat facing in the front-rear direction. auxiliary legs provided on the leg rods of the movable spectator seats, such that they can be folded freely so as to increase or decrease the ground contact distance in the front-rear direction; and engagement holes provided in either the auxiliary legs or the floor; Similarly, it consists of an engagement rod provided on the other side that can be releasably engaged with the engagement hole.

[Effect]

Move the movable bleachers to the designated position on the floor,
The movable bleachers can be installed on the floor by unfolding the auxiliary legs and engaging the engagement rods with the engagement holes. When storing the bleachers in the storage room, the auxiliary legs are folded.

〔Example〕

An embodiment of the present invention will be described below in Figures 1 to 5.
This will be explained based on the diagram.

Reference numeral 1 designates a floor of a multipurpose hall, which has a plurality of raised and lowered tiered floors 2 each having a top plate 2a, the upper surface of which is a flat surface.

The tiered floor 2 has a horizontally oriented rectangular tube shape consisting of a top plate 2a, a bottom plate 2b, a front plate 2c, and a rear plate 2d. Between the front plate 2c and the rear plate 2d, there is a vertical partition plate 2e facing left and right. Therefore, a plurality of (three in the embodiment) storage chambers 3 are formed.

A rectangular plate-shaped door 4 that can be opened and closed by sliding up and down is provided at the left and right openings of each storage chamber 3.

In addition, each step bed 2 includes a lifting means (not shown),
For example, they can be raised and lowered individually using hydraulic cylinders to form a stepped floor surface.

5 is a movable viewing seat (hereinafter simply referred to as a viewing seat)
The left and right sides 1 form an inverted T-shape with support rods 7 erected from approximately the center of the upper surface of the horizontal leg rods 6 facing in the front-rear direction.
A pair of legs 8, 8, a horizontal rod 9 bridged between the upper ends of the support rods 7, 7, and three legs whose base ends are pivotally connected to the horizontal rod 9 and which can be folded upward in the rearward direction. seat 10
, a back plate 11 fixed to the horizontal rod 9, and the horizontal rod 9.
It consists of an armrest 12 which is pivotably supported to be vertically movable.

As shown in FIG. 2, wheels 13, 13 facing left and right are attached to the lower surfaces of the front and rear ends of the leg rod 6.

A short rectangular tube 6a facing forward is protruded from the center in the left-right direction on the front end surface of the leg rod 6, and an engagement pin 14 and an engagement pin 14 are provided on the left side of the rectangular tube 6a. A protruding shaft 15 is provided that passes through the rectangular tube 6a horizontally at a predetermined interval.

Reference numeral 16 denotes a prismatic auxiliary leg that can be raised and lowered, and an engagement claw 1 that faces rearward is provided at the front of the lower end when the leg is raised.
A pair of hook-shaped left and right protrusions 16b1 having 6a
6b, and a long hole 16c facing in the longitudinal direction of the auxiliary leg 16 is cut in each projecting piece 16b.

This elongated hole 16c is inserted into the shaft 1 of the square tube 6a.
5, the auxiliary leg 16 is moved from the used position shown in the second figure, in which the auxiliary leg 16 is folded up with its free end facing upward, to the second position where the free end is horizontally rotated forward. 3. It can be rotated to the use position shown in the figure.

In the use position, the engaging claw 16a engages with the engaging pin 14, and the auxiliary leg 16 is integrally locked to the leg rod 6 in a horizontal state.

At this time, when the front edge of the elongated hole 16c comes into contact with the protruding shaft 15 and the leg rod 6 is slightly pulled forward, the engaging claw 1
6a can be removed from the engagement pin 14.

To fold the auxiliary leg 16, pull the auxiliary leg 16 slightly forward, disengage the engagement claw 16a from the engagement pin 14a, release the lock, and rotate the tip of the auxiliary leg 16 upward. , can be folded.

As shown in FIG. 4, the free end of the auxiliary leg 16 is provided with a receiving hole 17 that faces upward during use, and the bottom of this receiving hole 17 is a small hole 17a.

Although not shown, a similar receiving hole 17 is also provided at the rear end of the leg rod 6.

Reference numeral 18 denotes an engaging rod that is inserted into the receiving hole 17 from above, and is a shaft rod 1 that passes through the small hole 17a so as to be able to move up and down.
A horizontal collar 18b is provided protruding from the upper end of 8a, and a groove 18c is cut from the upper surface thereof.

Additionally, a shaft rod 18 protrudes from the lower surface of the auxiliary leg 16.
At the lower end of a, there is an engaging pin 1 perpendicular to its axis.
8d passes through.

A compression coil spring 19 is compressed between the lower surface of the collar 18b of the engagement rod 18 and the edge of the small hole 17, and the engagement rod 18 is always urged toward the opening of the receiving hole 17. There is.

Reference numeral 20 denotes a stopper provided on the lower surface of the front end of the auxiliary leg 16. When in use, this stopper 20 comes into contact with the floor 1 to support the load of the leg rod 6 and improve the stability of the bleachers 5. It is something.

As shown in FIG. 1, on the upper surface of the top plate 2a of each tier 2, there are two
A pair of rails 21, 21 facing in the left and right directions are laid.

A pair of front and rear rails 22, 22 that can be aligned with the rails 21, 21 when the stepped floor 2 is raised are also laid on the bottom surfaces of the storage chambers 3, 3.

Reference numeral 23 denotes a vertical engagement tube in the shape of a cylindrical top with an open bottom, and as shown in FIG.
An engagement hole 24 is formed by connecting the two.

The engagement cylinder 23 is fitted into a recessed hole 25 provided at a predetermined interval along the rail 21 near each rail 21 on the top plate 2a of the stepped floor 2.

As shown in FIG. 1, a plurality of sets (two sets in the embodiment) of spectator seats 5, 5 are stored on the rails 22, 22 in the storage room 3 of the left tiered floor 2, and these are used. In this case, raise this step bed 2 and move the rails 22, 22 to the adjacent right step bed 2.
Align the heights with the rails 21, 21 on the top surface of the .

After that, the seats 5, 5 are manually pulled out from the storage chamber 3 onto the rails 21, 21 as far as they can go, and each engaging rod 18 is pulled out as shown in FIG.
is opposed to the engagement hole 24 on the right step bed 2.

Next, the folded auxiliary legs 16 are rotated downward and locked into the use position.

Next, insert the tip of the driver 26 into the groove 18c of the engaging rod 18, rotate the engaging rod 18,
The engagement rod 18 is connected to the compression coil spring 19 so that the engagement pin 18d passes through the rectangular hole 24b of the engagement hole 24.
After pushing it downward against the urging force of , it is rotated 90 degrees to engage the engagement pin 18d with the lower surface of the upper plate 23a of the engagement tube 23 in a so-called bayonet manner.

Next, the tiered floor 2 to which the bleachers 5, 5 are fixed in this manner is raised, and the bleachers 5, 5 stored in the storage chamber 3 below the top plate 2a are moved to the left tiered floor 2. Pull it out onto the rails 21, 21 on the top plate 2a, and fix it onto the step floor 2 using the same procedure as described above.

In addition, after arranging the tiered floors 2 in a step-like manner in the front-rear direction, the seats 10 and armrests 12 of each bleacher seat 5 are folded forward, thereby creating a row of bleachers on the floor 1 of the multipurpose hall. be completed.

When a person sits on the seat 10, a load is applied to the stopper 20 and the three grounding points of the wheels 13, 13.
Moreover, the force that tends to rotate backward is received by the engaging rod 18 at the front, and the force that attempts to rotate forward is received by the engaging rod 18 at the rear.

The foldable auxiliary leg 16 is placed on the rear side of the leg rod 6.
Alternatively, it may be provided both before and after.

The auxiliary leg 16 may be pivoted to the leg rod 6 so as to rotate about a vertical axis.

As shown in FIGS. 6 and 7, a horizontal rod 28 that is slidable in the front-rear direction may be provided on the side surface of the leg rod 6 so as to be slidable through a slide groove 29.

It is also possible to provide the engagement rod 18 so as to be freely retractable on the floor side, and to provide the engagement hole 24 in the auxiliary leg 16.

The lower surfaces of the legrests 6 of the spectator seats 5 may be brought into direct contact with the floor.

[Effect of idea]

Since the movable bleachers can be stored in the storage room with the auxiliary legs folded, the storage room can be made smaller.

In addition, when installing movable seats on the floor, by releasably engaging the engagement rods and holes provided on the floor and auxiliary legs, it is possible to prevent the seats from falling over and , it is possible to stabilize the movable seats during installation.

[Brief explanation of the drawing]

Fig. 1 is a front perspective view showing an embodiment of the present invention with the audience seats and auxiliary legs folded, Fig. 2 is a partially cutaway vertical sectional view of Fig. 1, and Fig. 3 is a
FIG. 4 is an enlarged vertical cross-sectional view showing the engaged state of the engaging rod in FIG. 3, and FIG. 5 is a view taken along V-V in FIG.
FIG. 6 is a partially cutaway side view showing another embodiment of the present invention, and FIG. 7 is a partially cutaway front view. 1...floor, 2...step floor, 2a...top board,
2b...bottom plate, 3...storage room, 5...spectacle seats, 6
... Leg rod, 7 ... Support rod, 8 ... Leg body, 9 ... Side rod, 10 ... Seat, 11 ... Backboard, 12 ... Armrest, 13 ... Wheel, 14 ... Engagement Pin, 15...
Projection shaft, 16... Auxiliary leg, 16a... Engaging claw, 16
b... Projection piece, 16c... Long hole, 17... Receiving hole, 1
7a...small hole, 18...engaging rod, 18a...shaft rod, 18b...flange, 18c...groove, 18d...engaging pin, 20...stopper, 21, 22...rail, 23... ...Engagement tube, 23a...Top wall, 24...
Engagement hole, 25... recessed hole, 26... driver.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a movable spectator seat that supports a seat facing forward and backward, the leg lever has a pair of left and right scripts at the lower end, the lower end of which is in contact with the floor,
An auxiliary leg that is foldable so as to increase or decrease the ground contact distance in the front-back direction, an engagement hole provided on either the auxiliary leg or the floor, and an engagement hole provided on the other side. A mounting structure for a movable bleacher seat consisting of an engaging rod that can be freely engaged and disengaged. (2) The mounting structure for a movable spectator seat according to claim (1) of the utility model registration claim, wherein the auxiliary legs are pivotally attached to the leg rods so as to be able to rotate in the front-rear direction. (3) Utility model registration claim no. Mounting structure for the movable seats described in paragraph 1) or paragraph (2).