JP2728055B2 - Retractable chair - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable chair for a mobile auditorium suitable for use in an auditorium of a university or a cultural facility.

[0002]

2. Description of the Related Art A mobile auditorium composed of a plurality of floors having different heights and retractable chairs installed on the respective floors,
When installing in lecture facilities, such as auditoriums of universities and cultural facilities, it is necessary that a top plate is provided in front of each chair for the audience to write the lecture.

[0003] As a mobile auditorium for a lecture hall with a top plate,
When installing a retractable chair on a corrugated floor, provide a space behind the chair,
At the front end of the bunk floor behind the bunk floor with the chair, a top plate support member and a top plate that is pivotally supported by it and can be pulled out by hand are fixed so as to cover the space behind the front bunk floor. There are conventional examples. When the moving auditorium is stowed, only the retractable chair lays down on the corrugated floor in a superimposed state, and the top plate support member protrudes from the front of the superimposed corrugated floor to the front after manually storing the top plate. Stacking with

[0004]

The prior art having such a configuration has the following disadvantages. First, the top plate and the top plate support member protrude to the back of the floor in front of it, both during use and storage, so extra space must be provided to secure one seat, and extra storage is required during storage. Since space was required, the space utilization efficiency was poor. In addition, only the deployment and storage of the retractable chair is automatically performed at the time of deployment and storage, and the top plate must be stored manually, which makes it difficult to save labor. In addition, when stored, the top plate protrudes from the front of the corrugated floor, impairing the appearance.

The present invention has been made in view of the above prior art, and has been disclosed in which a top plate is installed in a mobile auditorium and labor for unfolding and storing is reduced.
The purpose is to achieve both space saving and aesthetics during storage.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a retractable chair which is used in a front-to-back arrangement to achieve such an object, comprising: a support member; A first link element rotatable in the first direction, a second link element disposed substantially parallel to the rear of the first link element and rotatable in the front-rear direction with respect to the support member, the first link element and the second link element. A top plate pivotally attached to the upper end of each of the link elements, a seat pivotally supported by the first link element, and a backrest provided along with the first link element; It is provided for use by a person sitting in a chair adjacent to the rear.

With such a configuration, the first link element and the second link element are connected by the top plate,
Construct a dual link mechanism of equal length or unequal length.
When the retractable chair of the present invention is applied to a mobile auditorium, when deployed, the first link element and the second link element are erected to perform the functions of the chair legs and the backrest, while supporting the top plate. , For those seated in chairs adjacent to the rear.

During storage, the first and second link elements are rotated forward from the use position. The two link elements move toward the floor surface while approaching each other, and eventually lie on the floor surface in an overlapping manner. At this time, the top plate pivotally attached to the first and second link elements also moves toward the floor. During this movement, the point of the top plate pivotally connected to the first link element is along an arc having the first link element as a radius, and the point pivotally connected to the second link element is connected to the second link element with the radius. Move along the arc. Since the center of rotation is in front of the first link element, the top plate maintains a substantially horizontal position defined by the point pivotally connected to the first link element and the point pivotally connected to the second link element. And finally lie flat on the floor, overlapping both link elements. That is, in the retractable chair of the present invention,
When the retractable chair is stored, the top plate that is a part of the retractable chair is also stored at the same time.

With such a function, the standing and falling of the retractable chair and the pull-out and storage of the top board are linked by the dual link mechanism, thereby realizing automation and labor-saving of the drawer and storage of the top board. Further, there is no need to provide an extra space for installing the top plate, and the space utilization efficiency is improved.

In the case where the retractable chair of the present invention is applied to a floor-type or flat-floor moving auditorium, the support member is provided on the floor of the moving auditorium that moves forward and backward in the front-rear direction. The first and second link elements may be configured to be pivotable between a use position standing on the floor and a folded position lying flat on the floor. In this case, the operation of the dual link mechanism achieves automation and labor saving of the drawer and storage of the top plate, and improvement in space use efficiency during use. In addition, when the retractable chair is stored, the top plate, which is a part of the retractable chair, is also stored on the corrugated floor. The front surface of the corrugated floor forms a flush wall surface and does not impair the aesthetic appearance.

Further, the retractable chair of the present invention has an armrest having an elongated hole at one end, a central portion of the armrest is pivotally connected to the first link element, and the one end projects from the second link element. The engagement member may be slidably engaged with the engagement member via the elongated hole. In this way, the armrest can also be incorporated so as to interlock with the dual link mechanism. As a result, providing the armrest on the retractable chair and all the effects described above are compatible.

As described above, according to the present invention, the installation of the top plate in the moving auditorium, labor saving of the unfolding and storing work, space saving and beautiful appearance at the time of storing are simultaneously achieved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A retractable chair 7 according to an embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a state in which a retractable chair 7 according to the present embodiment is applied to a moving floor 1 of a bunk floor type. Moving Auditorium 1
Is provided with a plurality of bunk floors 2, and causes the bunk floors 2 to expand and contract between a use position (see FIG. 1) that is deployed in a tier form and a storage position (see FIG. 2) that overlaps with each other. The structure of the traveling frame 3 for supporting each floor 2 and the driving mechanism 4 for moving the traveling frame 3 forward and backward are the same as those of the prior art, and a description thereof will be omitted. The retractable chairs 7 are arranged on the corrugated floor 2 and are arranged in front and rear as a whole as shown in FIG.

FIG. 3 shows a state where the retractable chair 7 is used. The retractable chair 7 includes a support member 8 mounted on the floor 2, a first link element 9 rotatable in the front-rear direction with respect to the support member 8, and substantially behind the first link element 9. A second link element 11 disposed in parallel and rotatable in the front-rear direction with respect to the support member 8, a top plate 12 pivotally attached to upper ends of the first link element 9 and the second link element 11, respectively. ,
And a seat 13 pivotally supported by the first link element 9. A backrest 14 is fixed on the upper part of the first link element. More specifically, the first link element 9 and the second link element 1
1 is a flat plate having a substantially equal length or a plate having a gentle arc shape.
The first link element is via a support shaft 9a and the second link element is via a support shaft 11a so that the flat surface faces the front.
It is pivotally attached to the support member 8 so as to be rotatable in the front-rear direction. The support shaft 11a is close to the upper rear of the support shaft 9a. Top plate 12
Is a support member 12b fixedly provided on both lower sides of the flat plate 12a. The support member 12b is fitted with a cap at the upper end of the first and second link elements 9, 11, and the support body 12b is provided at the front end of the first link element 9. It is pivotally attached to the upper end via a shaft 9b, and is pivotally attached to the upper end of the second link element 11 via a shaft 11b at a portion slightly behind the shaft 9b. That is, the top plate 12 forms a dual link mechanism having substantially the same length in cooperation with the first and second link elements 9 and 11, and supports the retractable chair 7. The retractable chair 7 of the present invention has an armrest 15 in addition to these. The armrest 15 has an elongate hole 15a at one end, a central portion pivotally connected to the first link element by a pin 9c, and slidably engages with the second link element by a pin 11c passing through the elongate hole 15a. The pin 11c is located horizontally behind the pin 9c.

The seat 13 includes a base end 13b fixed to the first link element 9, and a seat plate 13c pivotally supported on the base end 13b via a shaft 13a. Note that the pivot portion of the seat plate 13c has the same configuration as that of the conventional writhing type seat, and thus detailed description is omitted. This seat plate 13
The spring is urged by a spring (not shown) so as to be able to automatically rotate to the rising position shown by the imaginary line in FIG. 3. Has become. When the seat 13 is pressed from the lower surface side, the seat 13 can rotate from the rising position to a position where the seat 13 overlaps with the backrest 14.

The operation of this embodiment will be described below. As shown in FIGS. 1 and 3, the first and second link elements 9 and 11 are in the use position where the bunk floor 2 is deployed in a tiered manner.
Are standing parallel to each other. These first and second
The link elements 9 and 11 serve the function of the legs and the back of the chair, and the top plate 12 is supported as a part of the retractable chair 7 and is available for use by a person sitting on a chair adjacent to the rear. The armrest 15 is pivotally connected to the first link element 9 by a pin 9c, and the pin 11c is connected to the armrest 15 of the slot 15a.
It engages with the second link element 11 while penetrating the center side.

In the case of storing the bunk floor 2, as shown in FIG. 5, when the first and second link elements 9, 11 are rotated forward from the use position, the two link elements 9, 11 approach each other. While moving toward the floor surface 4, finally, as shown in FIG. At this time, the top plate 12 pivotally attached to the first and second link elements 9, 11 also moves toward the floor. In this movement, the point 9b pivotally connected to the first link element 9 of the top plate 12 is a point pivotally connected to the second link element 11 along an arc whose radius is the height of the first link element 9. 11b moves along an arc whose radius is the height of the second link element 11. The center of rotation is the first link element 9
Is located forward and downward, the top plate 12 maintains a substantially horizontal posture defined by a point 9b pivotally connected to the first link element 9 and a point 11b pivotally connected to the second link element 11. And finally lie flat on the floor, overlapping the two link elements 9,11 in parallel. That is, in the present embodiment, the top board 12 and the retractable chair 7 are simultaneously stored in the bunk floor 2. The armrest 15 also moves toward the floor 4 when the first and second link elements 9 and 11 are rotated, and the two link elements 9 and 1 are moved.
1, it fits in a position between the top plate 12 and the seat 13. At the time of this movement, the position in the long hole 15a of the pin 11c gradually moves from the center side of the armrest 15 to the end side, and at the time of storage, is located at the most end side. Thus, the pin 11c is
By being slidable in 5a, the armrest 15 can move while maintaining the substantially parallel position even though the pins 9c and 11c are provided horizontally, so that the armrest 15 is interlocked with the dual link mechanism. Be incorporated.

With this function, there is no need to provide an extra space for the top plate or the top plate supporting member to protrude, as in the conventional case, in order to secure one seat during use.
In addition, since the top plate supporting member does not need to secure a space protruding from the front surface of the corrugated floor at the time of storage, space utilization efficiency is improved.

Further, the top plate is pulled out and stored in conjunction with the retractable chair when the retractable chair stands upright or falls down by the dual link mechanism, so that the top plate is also automatically pulled out and stored simultaneously with the retractable chair, thereby saving labor. is there.

Further, since the top plate supporting member does not protrude from the front surface of the corrugated floor at the time of storage, the aesthetic appearance is not spoiled.

As described above, according to the present invention, the installation of the top plate in the moving auditorium, the labor saving of the unfolding and storing work, the space saving and the beautiful appearance at the time of storing are simultaneously achieved.

The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a mobile auditorium to which an embodiment of the present invention is applied.

FIG. 2 is a schematic side view showing a stored state of the mobile auditorium to which the embodiment is applied.

FIG. 3 is an exemplary side view showing a use state of the embodiment;

FIG. 4 is a side view showing the housed state of the embodiment.

FIG. 5 is an operation explanatory view of the embodiment.

[Explanation of Signs] 1 ... Moving auditorium 2 ... Bunk floor 7 ... Retractable chair 8 ... Support member 9 ... First link element 11 ... Second link element 12 ... Top plate 13 ... Seat 14 ... Backrest 15 ... Armrest

Claims (3)

(57) [Claims] 1. A retractable chair which is used by being arranged back and forth, comprising: a support member; a first link element rotatable in the front-rear direction with respect to the support member; A second link element disposed substantially in parallel and rotatable in the front-rear direction with respect to the support member; a top plate pivotally attached to upper ends of the first link element and the second link element; A seat pivotally supported by the element, and a backrest attached to the first link element, wherein the top plate is provided for use by a person sitting on a chair adjacent to the rear. And retractable chair. 2. A supporting member is provided on a floor of a moving auditorium that moves forward and backward in a front-rear direction, and a first and a second link element are used in a standing position on the floor and a folding position lying on the floor. The retractable chair according to claim 1, wherein the chair is configured to be able to rotate between a tatami position. 3. An armrest having an elongated hole at one end, a central portion of the armrest pivotally connected to the first link element, and the one end of the armrest projecting from the second link element. 2. A slidable engagement through a boss.
Or the retractable chair according to 2.