JPH0751141A - Seat raising type chair - Google Patents

Abstract

PURPOSE:To provide the seat raising type chair with which a sitting person can easily get away from and sit on the chair and a sitting panel can be more compactly housed. CONSTITUTION:A seat raising type chair 1 is provided with a seat panel 11, back rest 13, arm 15 extending downward while turnably pivotally supporting an upper edge part 15b at the upper part of a supporter 5 and first and second linking members 17 and 19 to be turnably linked to the arm 15 and a fitting part 11a on the rear side of the seat panel 11 in front of the supporter 7 erected on a floor 5. A rear edge part 19c of the second linking member 19 is fitted to a bracket 9 formed at the intermediate part of the supporter 5 so as to be turned and vertically slid. While this chair is used, the seat panel 11 takes an almost horizontal sitting state (the right side of the figure) and when nobody sits down on the chair, the seat panel 11 automatically turns to an almost vertical first housing state (the center of the figure) with the actions of various spring members. When the seat panel 11 is pushed backward from such a state, the seat panel 11 turns to the second housing state (the left side of the figure) of further making it close to the side of the supporter 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand-up chair provided in, for example, a lecture room of a school or a theater.

[0002]

2. Description of the Related Art Conventionally, a stand-up type chair of this kind has been used as shown in FIG. The sitting chair P1 is provided so as to face the desk P2, and a seat plate P5 and a backrest P7 are attached to support legs P4 standing on a floor P3. Of these, the seat plate P5 is the support leg P4.
Arm P11 pivotally supported on the bracket P9 of
It is fixed to. Therefore, when the occupant sits down, the seat plate P5 is pushed forward to bring it into a substantially horizontal seated state, and when leaving the seat, on the contrary, the seat plate P5 is flipped up rearward so that the seat plate P5 is substantially vertical. Put in the stored state.

However, such a standing chair P1 has the following problems. That is, when a seated person takes a seat, he / she stands next to the seat plate P5 and pushes down the seat plate P5 with his / her hand to form a middle waist and shifts his / her body from the side, or as shown in FIG. It is necessary to hook the hips on the front end portion of the seat plate P5 in the stored state and push down the seat plate P5 as it is to sit down, but in any case, an unnatural posture is forced, and it is very troublesome to take the seat away. Met. Further, when the hips are hooked on the front end of the seat plate P5 and the person sits down as it is, since the distance A between the front end of the rotating seat plate P5 and the desk P2 is narrow, the seated person's body is pinched and smoothed. I couldn't take a seat.

In order to eliminate such inconvenience, a stand-up chair as disclosed in Japanese Patent Laid-Open No. 4-376622 has been proposed. That is, as shown in FIG. 9, in this standing upright chair P21, the seat plate P23 is connected to the bracket P31 of the support leg P29 by the rotatable links P25 and P27. Then, when the seated person is seated, as shown in the right side of FIG. 9, when the hips are applied to the seat plate P23 in an upright posture and the hips are lowered and the seat plate P23 is pushed down, the links P25 and P27 rotate. Then, since the seat plate P23 is displaced in the horizontal state by being guided by this, the seated person can sit as it is. Further, when leaving the seat, it is possible to stand up as it is by the reverse operation.

[0005]

However, as shown on the right side of FIG. 9, in the case of the above-mentioned standing chair P21,
Due to the mechanism, the seat plate P23 cannot be brought close enough to the support leg P29 side during storage and can be stored compactly, so that the desk P3
Since the distance B between the seat 3 and the seat plate P23 is narrowed, there is a problem in that a space for a person to easily pass through cannot be secured.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a stand-up chair which allows a seated person to easily take a seat away from the seat and to store the seat board in a more compact manner. .

[0007]

In order to achieve the above-mentioned object, the invention of claim 1 is provided with a support portion standing on the floor, a seat plate and a backrest, and the seat plate is attached to the support member. A standing upright chair movably connected to a substantially horizontal seated state and a substantially vertical stored state, wherein an upper end portion of the arm is pivotally supported on an upper portion of the support portion and extends downward, A first connecting member and a second connecting member that are rotatably connected to the arm and a mounting portion provided on the back surface side of the seat plate, and the front end portion of the first connecting member is the seat. The rear end of the plate is pivotally supported by the lower end of the arm, and the second connecting member is pivotally supported by the front end of the second connecting member at the rear of the mount of the seat plate. At the same time, the middle part is pivotally supported by the middle part of the arm, and the rear end part is rotatable with respect to the middle part of the support part. One restriction position slidably be mounted vertically in the following be summarized as seat upright type chair according to claim.

A second aspect of the present invention provides the sitting chair according to the first aspect, wherein the backrest is fixed to the arm.

[0009]

In the stand-up chair of the present invention having the above-described structure, when sitting, for example, the seated person stands in front of the seat plate in a substantially vertical storage state, and the hips are applied to the seat plate and the waist is kept as it is. And lower the seat plate downward, the first and second connecting members that are rotatably connected to the arm and the mounting portion provided on the back surface side of the seat plate are respectively rotatable to the arm. It pivots downward with the pivotally supported portion (the rear end of the first connecting member and the intermediate portion of the second connecting member) as the fulcrum, and accordingly the seat plate moves downward so that it gradually becomes horizontal. To do. At this time, the second part attached to the middle part of the support part
Since the rear end of the connecting member slides upward, the arm rotatably connected to the second connecting member rotates forward with the upper end thereof as a fulcrum. Finally, the rear end portion of the second connecting member slides to the regulation position, and the seat plate becomes a substantially horizontal seated state. Therefore, the seated person can easily sit down simply by placing the hips on the seat plate and lowering the hips.

When the seat plate is to be housed in a substantially vertical state from this seated state, the first connecting member and the second connecting member rotate upward when the seat plate is pushed up, contrary to the above case. Then, the seat plate gradually becomes vertical and moves upward to approach the support portion side. At this time, since the rear end of the second connecting member slides downward, the arm rotates rearward (toward the supporting portion) with the upper end of the arm as a fulcrum. Therefore, the first and second connecting members rotatably connected to the arm also move rearward to approach the support portion side, and the seat plate accordingly approaches the support portion side, so that the seat plate The storage state is almost vertical.
Therefore, the seated person can easily leave the seat, and the seat plate can be brought close to the support portion side to be compactly stored.

Further, when the backrest is fixed to the arm, the backrest moves to the support portion side in conjunction with the arm during the above-described seat plate storage operation, so that the backrest does not become an obstacle. The seat plate can be stored more compactly.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Here, FIG. 1 is a side view of the standing upright chair 1 of the embodiment, and FIG. 2 is an explanatory view (perspective view) of the standing upright chair 1 as seen obliquely from the rear side.

The standing chair 1 is provided in, for example, a lecture room, a conference room, a theater or the like of a school, and is provided on a horizontally long desk 3 which is arranged in plural in the front-rear direction (left-right direction in FIG. 1). Has been. That is, in front of the pillar 7 of the desk 3 standing on the floor 5, a seat plate 11, a backrest 13, an arm 15 pivotably supported on the upper part of the pillar 7 and extending downward, and this arm 15. A first connecting member 17 and a second connecting member 19 that are rotatably connected to the seat plate 11 side are provided.

This standing chair 1 is in a sitting state (1a) in which the seat plate 11 is substantially horizontal as shown in the right side of FIG. 1, and when no one is sitting, as shown in the center of FIG. The seat plate 11 is automatically operated by the action of various spring members described later.
Becomes a substantially vertical first storage state (1b). Then, by forcibly pushing the seat plate 11 rearward from the first stored state (1b), as shown on the left side of FIG. (1
c).

Next, each structure of the above-mentioned standing chair 1 will be described in detail. As shown in FIG. 2, the arm 15 is a member in which a pair of left and right side plate portions 15 a are connected and integrated, and is arranged at the center of the back side of the chair 1. The upper end 15b of the arm 15 is rotatably supported by a pair of left and right brackets 21 provided on the upper portion of the column 7. That is, as shown in FIG. 3 (A-A cross-sectional view), the upper end portion 15b of the arm 15 has a shaft member 2 having a collar portion 23a.
It is attached to the inner side of the bracket 21 via 3. A backrest 13 is fixed to a backrest mounting portion 15c that is integrated with the arm 15 by screwing or the like.

The first connecting member 17 is, as shown in FIG.
The front end portion 17a is rotatably supported on the front side of a pair of left and right brackets 11a provided on the back surface side of the seat plate 11. That is, similarly to the case of the upper end portion 15b of the arm 15 (see FIG. 3), the front end portion 17 of the first connecting member 17 is provided.
a is attached to the inside of the bracket 11a via the shaft member 25.

The rear end portion 17b of the first connecting member 17
Is rotatably supported by the lower end portion 15d of the arm 15. That is, as shown in FIG. 4 (BB sectional view), the first
The rear end 17b of the connecting member 17 is attached to the outside of the lower end 15d of the arm 15 via the shaft member 27.

The central portion of the shaft member 27 is shown in FIG.
Further, as shown in FIG. 5 (C-C cross-sectional view), a stopper 28 and a torsion coil spring 29 for keeping the standing chair 1 in the first stored state (center of FIG. 1) are provided. The stopper 28 (see FIG. 6) includes two holding plates 28a, 2a.
8b, the shaft member 27 is inserted into the mounting hole 28c and is rotatably supported. In addition, the torsion coil spring 29
As shown in FIG. 5, one end 29a thereof is hooked on the holding plate 28a on the front side (left side in FIG. 5) of the stopper 28, and the other end 29b is erected on the left and right side plate portions 15a of the arm 15. It is hooked on the existing round bar 15e and urges the holding plate 28a on the front side forward.

Therefore, from the state where the first connecting member 17 is shown by the solid line (that is, the sitting state on the right side of FIG. 1), the upper side (direction of arrow A).
To the position indicated by the chain double-dashed line (that is,
(The stored state), the lower plate portion 17c of the first connecting member 17 comes into contact with the pressing plate 28a on the front side of the stopper 28, so that the first force is applied by the torsion coil spring 29.
The rotation of the connecting member 17 is stopped, and the seat plate 11 is maintained in the first stored state (center of FIG. 1). And in this state, the first
When the connecting member 17 is forcibly pushed in the direction of arrow A, the holding plate 28a on the front side of the stopper 28 is pushed backward, the holding plate 28b on the rear side is separated from the round bar 15e of the arm 15, and the entire stopper 28 rotates. Therefore, the first connecting member 17 can be further rotated in the arrow A direction, and the seat plate 11 can be brought into the second stored state (left side in FIG. 1).

Returning now to FIG. 1, the second connecting member 19 is
A front end portion 19a thereof is rotatably supported on the rear side of the bracket 11a of the seat plate 11. That is, as in the case of the front end portion 17a of the first connecting member 17 described above, the second connecting member 1
The front end portion 19 a of the bracket 9 is attached to the bracket 1 via the shaft member 33.
It is attached inside 1a.

The intermediate portion 19b of the second connecting member 19
Is rotatably supported by the intermediate portion 15f of the arm 15. That is, as shown in FIG. 4, the intermediate portion 19b of the second connecting member 19 is attached to the outside of the intermediate portion 15f of the arm 15 via the shaft member 35.

Further, the rear end portion 19c of the second connecting member 19
As shown in FIGS. 1 and 7 (D-D cross-sectional view), is attached to a pair of left and right brackets 39 provided in an intermediate portion of the support column 7 so as to be rotatable and slidable in the vertical direction. There is. That is, the bracket 39 is provided with a vertically long guide hole 39a, and the shaft member 4 is provided in the guide hole 39a.
1 is attached. The rear end portion 19c of the second connecting member 19 is attached to the inside of the bracket 39 via the shaft member 41. That is, the second connecting member 19 is rotatable about the shaft member 41, and the shaft member 41 itself is slidable up and down along the guide hole 39 a of the bracket 39. Further, as shown in FIG. 7, a tension coil spring 43 is hooked on the central portion 41a of the shaft member 41, and the shaft member 41 is constantly urged downward.

Next, the operation of the standing upright chair 1 having the above-mentioned structure will be described. As shown in FIG. 1, the standing upright chair 1 according to the present embodiment has the above-described stopper 28 (see FIG. 5) in a normal storage state (a state in which no one is seated and no external force is applied to the seat plate 11 or the like). 1) and the tension force of the tension coil spring 43 (see FIG. 7).
b).

When the seated person is seated, in the first stored state (1b), the user stands upright between the desk 3 and the seat plate 11 in an upright posture, puts his hips on the seat plate 11 and lowers his or her waist. And push down the seat plate 11. Then, the first and second connecting members 17 and 19 rotate downward with the shaft members 27 and 35 connected to the arm 15 as fulcrums, so that the seat plate 11 gradually becomes horizontal. Move down to. At this time, the rear end portion 19c of the second connecting member 19
The shaft member 41 is guided by the guide hole 39a and slides upward, so that the arm 15 rotatably connected to the second connecting member 19 fulcrums the shaft member 23 at the upper end 15b. Rotate forward as. Finally, as shown in the right side of FIG. 1, the shaft member 41 of the rear end portion 19c of the second connecting member 19 moves to the upper end portion of the guide hole 39 (that is, the regulating position), and the seat plate 11 is substantially moved. The seated state is horizontal (1a).

In the first stored state (1b) at the center of FIG. 1, the seat plate 11 makes an angle of about 20 to 30 ° (with respect to the vertical line), so that the above-described sitting operation is extremely difficult. To be easier. That is, when the seat plate 11 is at an angle of about 20 to 30 degrees, it is easier to sit on the seat plate 11 with the hips applied to the seat plate 11 than when the seat plate 11 is in a substantially vertical state. be able to.

Next, when the seated person stands up in the seated state (1a) on the right side of FIG. 1, the tension coil spring 43 (FIG. 7).
Since the shaft member 41 pulls downward, the first and second connecting members 17 and 19 automatically rotate upward, contrary to the above case, so that the seat plate 11 gradually rises. Rise to. At this time, the rear end portion 19c of the second connecting member 19
Is guided by the guide hole 39a and slides downward, so that the arm 15 rotates rearward (close to the column 7) with the shaft member 23 on the upper portion of the column 7 as a fulcrum. Therefore, the first and second connecting members 17 and 19 move rearward to approach the strut 7 side, and the seat plate 11 also approaches the strut 7 side. Finally, as described above, the pressing plate 28a on the front side of the stopper 28 (FIG. 5) comes into contact with the lower plate portion 17c of the first connecting member 17, and the biasing force of the torsion coil spring 29 causes the first and second pressing members 28a and 28b to come into contact. Since the rotation of the connecting members 17 and 19 is stopped, the first storage state (1b) in the center of FIG. 1 is established. That is, since the seat plate 11 approaches the column 7 side during storage, the desk 3 and the seat plate 11 are
The seat D can be compactly accommodated by increasing the distance D from the seat 11.

If it is desired to further increase the distance D between the desk 3 and the seat plate 11 from the first stored state (1b), the second stored state (1
c). That is, the first stored state (1b) in the center of FIG.
Therefore, when the seat plate 11 is forcedly pushed rearward, the first connecting member 17 and the second connecting member 19 supported by the stopper 28 further rotate toward the column 7 side.
As shown on the left side of FIG. 1, the seat plate 11 is closer to the column 7 side.

Therefore, for example, when there is a seated person and another person wants to pass through the seated person and go to another seat, the seated person stands up once and the seat board 11 is first stored. If the state (1b) is set and the seat plate 11 is pushed down rearward and pushed back to the second storage state (1c), a wide space for passing can be secured, so that another person can sit in front of the seated person. You can easily pass through. Then, when seating again, if the user moves forward and releases the forced pushing of the seat plate 11, the biasing force of the torsion coil spring 29 automatically brings about the first stored state (1b). So you can easily sit down.

As described above, according to the standing upright chair 1 of this embodiment, when the user sits down, the first storage state (1
In b), there is an advantage that the seated person can sit down very easily simply by putting his or her hips on the seat board 11 and lowering the waist. Further, when the seated person stands up and puts the seat plate 11 in the first stored state (1b), it is possible to easily leave the seat by an operation opposite to the seated state, and at the same time, the arm 15 is rotated to move to the column 7 side. As the seat plate 11 approaches, the supporting plate 11 also supports the pillar 7.
Since it approaches the side, there is an advantage that the seat plate 11 can be compactly stored and the seated person can easily move between the desk 3 and the chair 1. Further, if the seat plate 11 is pushed into the support side to be in the second storage state, the arm 15 approaches the support side 7 further, so that the seat plate 11 can be stored more compactly and the desk 3 and the seat plate 11 can be stored. Since the space between them can be made larger, even when there are seated persons as described above,
There is the advantage that other people can easily pass in front of the seated person.

That is, in the stand-up chair 1 of this embodiment, a seated person can easily take a seat, and the seat board 11 can be compactly stored so that a person can easily pass between the chair 1 and the desk 3. It has an excellent effect that Further, in the above-described embodiment, the backrest 13 is fixed to the arm 15, and when the seat plate 11 is stored, the backrest 13 also moves to the strut 7 side in conjunction with the arm 15, so that the backrest 13 does not interfere. Therefore, the seat plate 11 can be stored more compactly.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, in order to further simplify the configuration, the stopper 28 and the torsion coil spring 29 may not be provided. In this case, since the second storage state (1c) on the left side of FIG. 1 is automatically taken when the seat is not seated (the external force is not applied to the seat plate 11), the seat is slightly seated as compared with the above embodiment. However, there is an advantage that the configuration can be further simplified and the cost can be reduced.

[0032]

As described above, according to the stand-up chair of the present invention, the seated person can easily take the seat away from the seat and the seat board can be stored more compactly. Even when a desk or the like is provided on the table, a remarkable effect is obtained such that a person can easily pass between the chair and the desk.

Further, when the backrest is fixed to the arm, the backrest moves to the support portion side in conjunction with the arm during the storage operation of the seatboard, so that the backrest does not get in the way and the seatboard is removed. The effect is that it can be stored more compactly.

[Brief description of drawings]

FIG. 1 is a side view of a standing chair according to an embodiment.

FIG. 2 is an explanatory view (perspective view) of the standing upright chair according to the embodiment as viewed obliquely from the rear side.

FIG. 3 is a cross-sectional view taken along the line AA of the standing chair of the embodiment.

FIG. 4 is a BB cross-sectional view of the standing chair of the embodiment.

FIG. 5 is a cross-sectional view taken along line CC of the stand-up chair of the embodiment.

FIG. 6 is a perspective view of a stopper of the embodiment.

FIG. 7 is a cross-sectional view taken along the line D-D of the standing chair of the embodiment.

FIG. 8 is a side view showing a conventional sitting chair.

FIG. 9 is a side view showing a conventional standing chair.

[Explanation of symbols]

1 ... Sedentary chair 3 ... Desk 5 ... Floor 7 ... Support 11 ... Seat 11a, 21, 39
... Bracket 13 ... Backrest 15 ... Arm 17 ... First connecting member 19 ... Second connecting member 39a ... Guide hole

Claims (2)

[Claims] 1. A support part which is erected on the floor, a seat plate and a backrest, and the seat plate is movably connected to the support part between a substantially horizontal sitting state and a substantially vertical storage state. A sitting chair, wherein an upper end of the arm is rotatably supported by an upper portion of the support portion and extends downward, and the arm and a mounting portion provided on a back side of the seat plate are rotated. A first connecting member and a second connecting member that are movably connected to each other, and a front end portion of the first connecting member is pivotally supported on a front side of a mounting portion of the seat plate, and a rear end portion thereof is The second connecting member is pivotally supported on the lower end portion of the arm, the front end portion of the second connecting member is pivotally supported on the rear side of the mounting portion of the seat plate, and the intermediate portion is pivotally supported on the intermediate portion of the arm. The rear end is mounted so as to be rotatable with respect to the intermediate part of the support and slidable in the vertical direction below the regulation position. Seat standing-type chair and said Rukoto. 2. The standing chair according to claim 1, wherein the backrest is fixed to the arm.