JPH11152917A - Movable seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable seat having a moving forward guide mechanism which heightens the accuracy of moving forward of movable decks without requiring any readjustment and has no fear of damage. SOLUTION: The movable seat is capable of being roughly and telescopically stored and developed, one end of a pair of upper links 52 is connected to the rear sides of decks 2, 3 and 4 located at upper stages of movable decks 1, 2 and 3 with hinges, at the same time, the other end of a pair of upper links 52 is connected to a free end of a pair of lower links 54 connected to the rear sides of the movable decks 1, 2 and 3 with hinges, and the upper links 52 are connected to the lower links 54 with cross members 55 and 56 expanded parallel with each other. Lingths of the links 52 and 54 are so selected that the upper links 52 take up horizontal postures in a state to store the movable decks 1, 2 and 3 and that the upper and lower links 52 and 54 take up projected postures downward in a state to develop the movable decks 1, 2 and 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is applicable not only to indoors such as gymnasiums and auditoriums, but also to outdoor stadiums and the like, in which a plurality of decks are deployed in steps as required. After use, these decks can be housed in a vertically nested manner, so that they can be housed in a generally nested structure. This is a significant improvement in the straightness of the movable deck when displacing.

[0002]

2. Description of the Related Art There have been proposed various types of movable spectator seats in which a plurality of movable decks can be stored and deployed almost in a telescopic manner, and in many cases, a separate type or movable deck is provided on a movable deck. By arranging a bench-type chair, it is possible to seat a predetermined number of spectators on the moving seat.

In such a movable spectator, in order to ensure the straightness of each movable deck when the movable deck moves forward in the unfolding direction and retracts in the storing direction, the applicant has first made the following.
A telescopic structure described in Japanese Utility Model Laid-Open No. 55-40718 was proposed.

FIGS. 7 to 10 show this prior art. FIG. 7 shows that all of a plurality of decks 111 to 115 horizontally arranged at predetermined intervals in the vertical direction are movable types. FIG. 2 shows a movable seat where the decks 111 to 115 are supported by respective carts 116 to 120 that cause the respective decks 111 to 115 to move forward and backward, and the decks and the carts have a generally nested structure as a whole. Here, the lower deck and the truck are completely inserted into the inside of the upper stage, and the uppermost deck 115 and the truck 120 are provided on the wall or the like.
1 can provide a storage state as shown in FIG.
By causing the vehicles 1 to 115 to advance to their advance limit positions under the action of the carts 116 to 120, an unfolded state as shown in FIG. 7 can be brought about.

The decks and carts at each stage are assembled as shown in FIG. 9 with a deck 114 and a cart 118 as an example in a rear perspective view.
4 is a penetrating material 114a that extends horizontally in the left-right direction in a vertical posture.
A plurality of hook-shaped arms 114b having a rear end fixed to the penetrating material 114a and projecting horizontally forward at a plurality of locations spaced apart in the length direction of the penetrating material 114a; Floor material 114 stretched over the horizontally projecting portion of 114b
c, 114d, and the carriage 118 extends in the front-rear direction, and has a pair of support legs 118b that contact the floor surface via the traveling rollers 118a, and the respective support legs 11d.
8b, a pair of uprights 118c, which are upright at the rear end and have a portion near the upper end fixed to the penetrating member 114a.

In the drawing, reference numeral 122 is provided so as to protrude forward from each of the columns 118c, and the penetrating member 114a and the floor member 1 are provided.
Reference numeral 123 denotes a beam member that supports each of the beams 14c and 114d, and reference numeral 123 denotes a brace that connects the lower end of each column 118c and the rear end of the hook-shaped arm 114b disposed closer to the center. Here, a bench-type chair 124 is attached to the tip of the floor material 114d.

[0007] By the way, such a telescopic structure of the movable spectator seat has a pair of two hook-like arms 114b arranged at the center of the deck 114 except for the lowermost stage, in particular, as shown in FIG. As shown in the main part perspective view in which a part is cut away, one wire rope 126 is wound around each wire pulley 125 provided at the front and rear ends of each hook-shaped arm 114b in a cross-like manner. Rope 12
6 at the rear ends of both arms 114b of the lower deck.
The wire rope 126 is connected to one of the brackets 114f protruding from e under tension adjustment, and the center of the wire rope 126 is clamped to the other bracket 114f.

In this telescopic structure, the wire rope 126 hung around the hook-shaped arm 114b of the upper deck regulates the forward / backward movement of the lower deck. According to this, one wire rope 126 is crossed. , And both ends of the bracket 11
4f, and the central portion thereof is connected to the other bracket 11
4f, when the lower deck moves forward and backward, the respective brackets 114 of the lower deck
Since f is displaced by an equal amount with respect to the upper deck under the restraint of the wire rope 126, the straightness of the forward / backward movement is ensured.

In the figure, reference numeral 127 denotes each hook-shaped arm 114b.
5 shows a reinforcing member projecting upward from the distal end of the support member and supporting the chair 124.

[0010]

However, in the prior art, it is difficult to accurately match the wire rope tension of each stage, and the straightness of the deck at each stage is not uniform. However, it is difficult to secure excellent straightness as the whole moving spectator seat, and there is a risk of interference with the adjacent spectator seats. It is necessary to perform the straightening operation repeatedly or manually by the operator to obtain the required straight traveling accuracy.

On the other hand, if the initial tension of the wire rope 126 is too large, the wire rope 126 may break. On the other hand, if the elongation of the wire rope 126 over time is too large, it is not sufficient to adjust the tension again. The straightness cannot be secured, and even if the tension of the wire rope 126 is properly adjusted, the straightness of the deck 114 has its own limit due to the flexibility of the wire rope itself. .

[0012] The present invention has been made as a result of studying to solve such problems of the prior art, and the purpose of the present invention is to sufficiently improve the straight running accuracy of each deck. Of course, it is possible to increase the straight traveling accuracy of each step sufficiently, and it is not necessary to readjust it during use and there is no risk of damage. It is in.

[0013]

SUMMARY OF THE INVENTION A movable spectator according to the present invention comprises a plurality of decks horizontally arranged at intervals in the vertical direction, and respective trolleys for moving the respective movable decks forward and backward. In the same manner as described in the prior art, the decks and carts can be stored and deployed almost in a telescopic manner. One end of the pair of upper links is hinged to be swingable in a vertical plane, for example, via an arm as described in the related art, and the other end of the upper links is connected to the rear end of the movable deck. Part, on its back, hinged to the free ends of a pair of parallel lower links, also pivotally hinged in a vertical plane, for example via arms.
The upper link and the lower link, which form a pair, are connected to each other by a cross member extending parallel to each other in the left-right direction, and the length of each of the upper and lower links is adjusted so that the upper link is horizontal under the storage of the movable deck. The upper and lower links are selected to have a downwardly convex posture when the movable deck is deployed.

In this movable spectator seat, the upper and lower links have high rigidity in the left-right direction by mutually connecting the upper link pair and the lower link pair extending in parallel with a cross member. In addition, since these links made of rigid material do not break or expand during use, based on the swinging motion of the upper link and the lower link, both movable decks are made uniform and high precision With the straightness of the above, it is possible to smoothly advance and retreat, and it is not necessary to replace or repair the link during use.

In addition, here, the length of each of the upper and lower links is selected so that the upper link is in a horizontal attitude when the movable deck is stored, and the upper link interferes with any of the upper and lower decks. Effectively, the space between the upper and lower decks can be maintained at the required dimensions as before, and the volume occupied by the entire movable spectator seat when stored can be reduced sufficiently. When the upper and lower links are in a downwardly convex position when deployed, smoothing the downward displacement of the link between the two links will always facilitate the storage operation based on the retractable displacement of the movable deck. Can be closed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view taken along a center line, showing an embodiment of the present invention in a deployed position of a movable spectator seat, and FIG. 2 is a rear view of a main part showing the embodiment in a stored position.

Here, of the five decks 1 to 5 horizontally arranged at intervals in the vertical direction, the lower three decks 1 to 3 are movable decks, and these movable decks 1 to 3 are movable decks.
Can be moved back and forth with the carts 6 to 8 attached to them respectively.

Here, the deck 1 excluding the top deck 5
4 are penetrating members 9 to 12 extending horizontally in the left-right direction, and a plurality of penetrating members 9 to 12 are provided so as to protrude forward from the penetrating member horizontally at a plurality of locations spaced apart in the longitudinal direction. Arms 13 to 16 and floor material 1 stretched over these arms
7 to 20.

The carts 6 to 8 extend in the front-rear direction and come into contact with the floor surface 21 via running rollers, and a pair of support legs 22 to 24 similar to those described in the prior art, A pair of uprights 25 to 27 are provided upright at the rear ends of the legs 22 to 24 and fixed in the vicinity of the upper ends to the penetrating members 9 to 11. In addition, each of these pillars 25-27 here
Has a roller at its upper end for supporting the upper-stage arms 14 to 16 and smoothing the relative displacement between the respective arms in the front-rear direction.

The uppermost deck 5 mounted on the fixed support 28 is connected to the beam 2
It comprises a plurality of arms 30 projecting forward from 9 and a floor material 31 stretched over the arms. In addition,
As shown in the figure, the lower deck 4 of the uppermost deck 5 is also a non-operational deck attached to the fixed support 32.

It is a matter of course that separate types of individual chairs can be provided on each deck of the movable grandstand having the above-described structure, if necessary.
In the figure, the bench-type continuous chairs 33 to 3 are shown.
By arranging 7, a predetermined number of spectators can be seated.

In FIG. 2, 39 to 4
1 is a lower end portion of the column 26 of the bogie 7 and the penetrating member 10,
The brace which connects the lower end part of the support | pillar 27 of the bogie 8 and the penetrating material 11, and the lower end part of the fixed support | pillar 32 and the penetrating material 12 are shown.

Such a linear guide mechanism for the movable seats supports the back surface of the deck 4 located on the upper stage of the movable deck 3, as shown in FIG. Of the plurality of arms 16 (see FIG. 2), one end of a pair of upper links 52 parallel to each other is placed on the inner side surface of the two arms located on the center side via a spacer member 51 in the vertical plane. The other ends of these upper links 52 are connected to the two arms 1 at the same position as described above on the rear surface of the rear end portion of the lower movable deck 3.
5 is connected to the free ends of a pair of parallel lower links 54 hinged at one end to the inner surface via a spacer member 51 so as to be swingable in a vertical plane, and the upper link forms a pair together. 52 and the lower link 54 are connected to each other by cross members 55 and 56 extending in parallel with each other to increase the rigidity of the link mechanism.

As shown in FIGS. 1 and 3, the lengths of the upper link 52 and the lower link 54 are, as shown in FIGS. Both links 52, 54 of the section
Takes a posture that is convex downward, and the movable deck,
When it enters the lower side of the fixed deck 4, as shown in FIG. 4, the upper link 52 hinged to the distal end of the spacer member 51 moves horizontally along the arm 16 to which the spacer member is attached. Choose to be in a posture. Under such a storage state of the movable deck, the lower link 54 connected to the rear end of the spacer member 51 on the back surface of the lower deck extends obliquely downward from the upper link 52 on the back side of the deck. I do.

In the linear guide mechanism constructed as described above, the movable deck, for example, the movable deck 3 in the housed state shown in FIG. 5A is sequentially traced through the advance positions shown in B and C in FIG. In deploying to the position shown at D, the upper link 52 pivots progressively downward about its hinge position to the spacer member 51, and the lower link 54 also moves about its hinge position. To guide the linear advance displacement of the deck 3. Here, the upper and lower links 52, 52 between the movable deck 3 and the extended deck shown in FIG.
The particularly large increase in the angle of intersection of 54 causes lower link 54 to pivot somewhat upward about its hinge position.

On the other hand, when storing the movable deck 3 in the deployed state, the upper and lower links 52, 5
Numeral 4 is rotated and displaced in the opposite direction to that described above, and guides the rectilinear receding displacement of the movable deck 3 to the position indicated by A in the figure. Incidentally, FIG. 1 shows a state in which all the movable decks 1 to 3 are deployed under such an operation of the straight guide mechanism, and FIG. 6 shows a state in which all the movable decks 1 to 3 are stored.

In such an operation of the linear guide mechanism,
The upper and lower links 52 and 54 swing only in a vertical plane, and the upper link 52 and the lower link 54 forming a pair are connected by cross members 55 and 56, as shown in FIG. Has a sufficiently large rigidity in the left-right direction perpendicular to the plane of the drawing, so that the deployment and storage of each of the movable decks 1 to 3 can be smoothly performed with high straightness.

In addition, this linear guide mechanism not only does not require the tension adjustment as in the prior art, but also imparts the required strength to each of the links 52, 54 made of a rigid material, so that the links 52, 54 are provided. Since there is no elongation, breakage, etc., at 54, high straightness can always be maintained without any special adjustment.

Although the embodiment of the present invention has been described with reference to the drawings, it is also possible to omit the inoperative deck 5 and the fixed support 28 from the places shown in the figure, and to make all decks movable. .

[0030]

As described above, according to the present invention, it is possible to configure a straight guide mechanism without requiring a special operation such as tension adjustment, and to greatly improve the straight running accuracy of each deck. In addition, the straight running accuracy of each stage can be made sufficiently uniform, and further, it is not necessary to make adjustment during use, and high straight running can be always realized without fear of breakage.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along a center line, showing an embodiment of the present invention in a deployed position of a movable spectator seat.

FIG. 2 is a main part rear view showing the embodiment of the present invention in a storage posture of a movable spectator seat.

FIG. 3 is an enlarged view of a main part showing a straight traveling guide mechanism.

FIG. 4 is an enlarged sectional view showing the length of the upper and lower links.

FIG. 5 is an operation explanatory view of the straight guide mechanism.

FIG. 6 is a sectional view similar to FIG. 1, showing the movable viewing seat in a stowed position;

FIG. 7 is a cross-sectional view similar to FIG. 1, showing the prior art in a deployed position of a movable spectator seat.

FIG. 8 is a cross-sectional view similar to FIG. 1, showing the prior art in a storage posture of a movable spectator seat.

FIG. 9 is a rear perspective view of one deck and a cart.

FIG. 10 is a perspective view of a main part showing a telescopic structure.

[Explanation of symbols]

 1-5 deck 6-8 cart 9-12 penetrating material 13-16 arm 17-20 flooring material 21 floor surface 22-24 support leg 25-27 pillar 33-37 continuous chair 51 spacer member 52 upper link 54 lower link 55, 56 Cross Members

Claims (1)

[Claims] 1. A deck comprising a plurality of decks horizontally arranged at intervals in a vertical direction, and respective carts for causing the movable decks to move forward and backward, and these decks and the carts are stored almost telescopically. A movable seat that can be deployed, and one end of a pair of mutually parallel upper links is hinged to the back of the deck located on the upper stage of the movable deck so as to be swingable in a vertical plane, The other ends of these upper links are hinged to the free ends of a pair of parallel lower links hinged to the rear surface of the movable deck at the rear end thereof so as to be swingable in a vertical plane on the rear surface thereof. The upper link and the lower link are connected to each other by a cross member extending in parallel with each other, and the length of each of the upper and lower links is adjusted to a horizontal position under the storage of the movable deck. A movable spectator seat whose upper and lower links are selected to have a downwardly convex posture when the movable deck is deployed.