JP2000041779A - Elbow linked type seat standing type connection chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform application even to a connection chair of a back fixed type and to raise the degree of freedom on the design of the shape/arrangement of a linking member. SOLUTION: The respective seats 3 of the plural chairs integrally connected to each other are supported by columns 5 at both side parts and made turnable between a using position and a standing position. In this case, respective elbows 6 are supported by the respective columns 5 turnably between the using position and the standing position and energized to the standing position at all times. The upper end part of the linking member 11 is connected to a connection part shifted to a rear part from the turning center D of the respective elbows 6. An engaging plate 14 capable of being engaged or separated to/from an engaging projection part 3b provided on the position shifted to the rear part from the turning center C at the left and right side parts of the respective seats 3 is provided on the lower end part of the linking member 11, and the respective seats 3 and the respective elbows 6 are linked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a standing-type connecting chair used in public facilities and the like, and more particularly to an elbow-linked sitting-type connecting chair in which an elbow is linked to a seat.

[0002]

2. Description of the Related Art As the above-mentioned elbow-linked type sitting upright connecting chair, for example, the one disclosed by the present applicant in Japanese Utility Model Publication No. Sho 56-44424 is conventionally known. This conventional seat-standing connecting chair comprises a plurality of chairs integrally connected to each other, the chairs being respectively located on a seat, a back, and on both sides of the seat and the back. Other than the end of the connecting chair, and the elbow which is located adjacent to each of the supporting columns and is shared by the chairs on both sides except for the end of the connecting chair. Is rotatably supported at an intermediate position between the front and rear ends of both sides thereof at an intermediate position between the upper and lower ends of the pillars on both sides, between a substantially horizontal use position and a substantially vertical standing position. The back is rotatably connected at the lower end to the rear end of the seat, and the intermediate position between the upper and lower ends of both sides is linked to each side via a link member. The link member, the side of the seat, the column and the side of the back thereof are connected to the upper end of the column. A four-bar linkage is formed on each side of the back and interlocks with the seat. When the seat is located at the above-mentioned use position, the seat is located at the use position inclined backward, while the seat is located at the above-mentioned upright position. In such a case, it is located in a substantially vertical standing position and is in a state of being fitted with the seat.

The elbow here is rotatably supported at an intermediate position between its front and rear ends by the upper end of the column, and can rotate between a substantially horizontal use position and a substantially vertical standing position. At the same time, on the back surface, except for the end of the connecting chair, it can be hooked and separated from any of the two link members respectively connected to the backs on both sides of the elbow. According to the mechanism, at least one of the seats on both sides of the elbow is moved from the standing position to the use position together with the back by a person sitting thereon, and the link member connected to the back is rotated from a substantially vertical position to a substantially horizontal position. Then, the elbow whose back surface is pressed by the link member rotates together with the link member to a substantially horizontal use position, and there is a person sitting on at least one of the seats on both sides of the elbow and the seat is on the back. Located in use position with During this time, the elbow is supported on the back surface by the link member and is held in the above-mentioned substantially horizontal use position, the person who is there from both sides of the elbow is separated from the seat, and both of those seats are together with the back. When moving from the use position to the standing position and the two link members respectively connected to their backs rotate from the substantially horizontal position to the substantially vertical position, the elbows together with their link members under their own weight, Rotate to a substantially vertical upright position aligned with the seat and back.

[0004]

However, in the above-described conventional elbow interlocking mechanism of the sitting upright type connecting chair, the existence of the link member for interlocking the back with the seat is indispensable. There is a problem that it cannot be applied to a fixed sitting upright connecting chair, and since the link member has both a function of connecting the back to the column and a function of rotating the elbow, the shape and arrangement of the link member There is a problem in that the design of the chair is greatly restricted, and it is difficult to improve both the appearance and the function of the chair.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide an upright-type connecting chair that advantageously solves the above-mentioned problems, and an elbow-linked seat according to the present invention. The upright articulated chair comprises a plurality of chairs integrally connected to each other, the chairs each having a seat, a back,
The pillars located on both sides of the seat and the back and shared by both chairs except for the end of the connecting chair, and the pillars located adjacent to each of those pillars and other than the end of the connecting chair An elbow shared with a chair, wherein the seat is rotatably supported at an intermediate position between the front and rear ends of both sides thereof at an intermediate position between the upper and lower ends of the columns on both sides, and is substantially horizontal. In the sitting upright type connecting chair capable of rotating between a use position and a substantially vertical upright position, each of the elbows is upright with a substantially horizontal use position and a front end raised above the position. While being supported by each of the columns so as to be rotatable with respect to the position, and constantly urged toward the standing position, a link member extending along the column is supported by each of the columns so as to be able to move up and down. The connecting portion of each elbow, which is displaced in the front-rear direction from its center of rotation, An upper portion of the link member is connected, and a hook portion is provided at a position shifted from the center of rotation of the left and right sides of each seat in the same front-rear direction as the connecting portion of the elbow, and a lower portion of the link member is provided. An engaging portion that can be engaged with and separated from the engaging portion of the seat on both sides of the link member is located above the engaging portion of the seat when the shift direction of the engaging portion of the seat is rearward with respect to the rotation center. When the direction of displacement of the hook of the seat is forward with respect to the center of rotation, the seat is provided below the hook of the seat.

[0006] In such a sitting upright connecting chair, when a person sitting on at least one of the seats on both sides of the column is turned to a substantially horizontal use position, the engaging portions on the left and right sides of the seat are displaced. When the direction is forward with respect to the center of rotation, the engaging portions on the left and right sides of the seats are lowered to engage with the lower engaging portions of the link members supported by the left and right columns of the seat, and the link members are If the shift direction of the hooks on the left and right sides of the seat is backward with respect to the center of rotation, the hooks on the left and right sides of the seats rise and the right and left sides of the seat are raised. The link member is engaged with the engaging portion at the lower portion of the link member supported by the column, and the link member is raised under the support of the column. Here, since the connecting portion of the elbow is displaced from the center of rotation in the same direction as the displacing direction of the engaging portion of the seat, if the direction of displacement of the connecting portion of the elbow is forward with respect to the center of rotation, the above-described lowering is performed. If the linking member pulls the connecting portion of the elbow downward to position the elbow in a substantially horizontal use position, and if the direction of displacement of the connecting portion of the elbow is backward with respect to the center of rotation, the link member ascending described above. Pushes the elbow joint upward to position the elbow in a substantially horizontal use position. Therefore, according to this connecting chair, when a seated person turns any seat to the use position, the elbows on both sides of the seat rotate to the use position in conjunction with the seat and can be used. State.

[0007] Even if one of the seats on both sides of the elbow located in the use position is moved away from the use position to the standing position, the other seat in the use position is removed. Since the engaging portion of the link member is still engaged with the engaging portion of the link member, the engaging portion of the seat rotated to the upright position is separated from the link member without moving the engaging portion of the link member, and the other is in the use position. The holding portion of the seat holds the elbow in the use position via the link member. Therefore, according to this connecting chair,
The seated person can continue to use the elbows on both sides.

On the other hand, when the seats on both sides of the elbow located at the use position are both separated and the person who is there is separated and pivots from the use position to the standing position, the engaging portions of those seats move together. Since the link member connected to the elbow located between them is movable, the elbow is rotated to the upright position by the urging force that constantly biases the elbow toward the upright position. Therefore, according to this connecting chair, the unused elbow can be automatically turned to the upright position.

In addition, according to this sitting upright connecting chair, since the link member is not connected to the back, it can be applied to a connecting chair having a fixed back so that the above-mentioned effects can be obtained. Since the link member does not have a function of connecting the back to the column, but has only a function of rotating the elbow, a great degree of freedom can be obtained in the design of the shape and arrangement of the link member, and thus the appearance and function of the chair Can be relatively easily improved both.

In the present invention, the link member may be slidably supported by the column and movable up and down. However, the link member can be moved up and down via another link member. In this way, the vertical movement of the link member and the rotation of the elbow can be smoothed.

Further, in the present invention, the link member may be housed in a concave portion formed on a side portion of the column, and in this case, the above-mentioned function of rotating the elbow is provided. Meanwhile, the appearance around the column can be simplified,
The appearance of the connecting chair can be improved.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1A is an exploded perspective view showing an elbow interlocking mechanism in one embodiment of the elbow-interlocking type sitting upright connecting chair of the present invention, and FIGS. 1B and 1C are views thereof. 1A is a sectional view showing a section AA and a section BB in FIG. 1A, respectively, and FIG. 2 is a perspective view showing an appearance of the sitting upright type connecting chair of the embodiment. The upright-type connecting chair can be used in a theater or the like, and includes a plurality of (three in the illustrated example) chairs 2 integrally connected to each other by a connecting pipe 1 as shown in FIG. Each of those chairs 2 is a seat 3
, The back 4, and the pillars 5, which are located on both sides of the seat 3 and the back 4, and are shared by the chairs 2 on both sides except for the end of the connecting chair, and are located adjacent to each of the pillars 5. In addition, the connecting pipe 1 has an elbow 6 that is shared by the chairs 2 on both sides except for the end of the connecting chair, and the connecting pipe 1 is fixed to the front surface of the stepped floor via a bracket as shown in FIG. Have been.

Each seat 3 in the connecting chair of this embodiment is
As shown in FIG. 1 (a), the bearing hole 3a provided at an intermediate position near the rear end between the front and rear ends on both sides thereof is directed left and right to the intermediate position between the upper and lower ends of the columns 5 on both sides. These support columns 5a are fitted by
The rotation limit position is supported by being rotatably supported around the axis C of the support shaft 5a, and by contact between upper and lower end surfaces of a through hole 5e of a support post 5 to be described later and a hook 3b of a side portion of the seat 3. By being identified,
2 can be rotated between a substantially horizontal use position where the seat 3 shown at the right end of FIG. 2 is located and a substantially vertical standing position where the seat 3 shown at the left end and the center of FIG. 2 is located. At the same time, the back 4 is always urged toward its upright position by a spring (not shown), and each back 4 is fixed to a support post 5 on both sides thereof and is always located at a use position appropriately inclined backward. .

Each of the elbows 6 of the connecting chair of this embodiment has a recess (not shown) extending in the front-rear direction on the lower surface thereof, and the recess engages with the front portion of the upper end of the column 5 at the same time. As shown in FIG. 1A, a bearing hole 6a is provided at an intermediate position near the rear end between the front and rear ends, and the bearing hole 6a is provided.
Each pin 5 is rotatably supported at its upper end by a pin 7 inserted through a bearing hole 5b formed in the front portion of the upper end of the post 5a. hand,
A substantially horizontal use position where the two elbows 6 shown on the right side of FIG. 2 are located, and a standing position where the two elbows 6 shown on the left side of FIG. , And is constantly urged toward its upright position by a torsion spring 8 mounted on the pin 7.

Further, in this embodiment, FIG.
As shown in the figure, the pin 7 is inserted through the hole of the front end 9a,
The torsion spring 8 presses the elbow 6 to rotate together with the first elbow 6 and the first link member 9 and the left side (right side in the figure) at an intermediate position between the upper and lower ends of the respective columns 5. A second link member 10 rotatably supported by a support post 5 is provided by inserting a support shaft 5c projecting from the front end portion 10a into a hole at the front end 10a, while a cross section is shown in FIG. In addition, a concave portion 5d is formed on the left side portion (right side in FIG. 1A) of the column 5, and the first and second link members 9, 10 are formed with concave portions 5d formed on the side portion of the column 5. Housed within.

The third link member 11 as a link member of the present invention is further provided in the recess 5d of each of the columns 5 described above.
Is accommodated so as to extend in the vertical direction along the column 5, and the third link member 11 pivots its upper end 11 a integrally with the elbow 6 as the elbow connecting portion of the present invention. The rear end portion 9b of the first link member 9 is rotatably connected to the rear end portion 9b of the second link member 10 via a pin 13. By being movably connected, they are connected to the column 5 via the first and second link members 9 and 10 to form a four-bar link with them, and are supported by the column 5 so as to be able to move up and down. A hooking plate 14 as a hooking portion extending in the left-right direction with an arc-shaped cross section is integrally connected to the lower end 11c of the third link member 11.

As shown in FIG. 1A, the column 5 extends downward from the lower end of the concave portion 5d in an arc around the support shaft 5a, and as shown in FIG. Through hole 5e penetrating the third link member in the left-right direction.
The right side (left side in FIG. 1A) of the hooking plate 14 at the lower end of 11 is inserted into the through hole 5e. Furthermore, each seat 3
As shown in FIG. 1 (a), bearing holes on both sides thereof are provided.
A pin-shaped engaging projection as an engaging part at a position behind 3a
3b are protruded respectively, and their engaging convex portions 3b are
The lower end of the third link member 11 is inserted into the through hole 5e of the support post 5 so as to be positioned below the engaging plate 12 so as to be able to engage and separate from the engaging plate 14.

FIGS. 3 and 4 mainly show the support 5 and the first to third link members 9 in the connecting chair of the above embodiment.
11 is an explanatory view showing the operation of the elbow interlocking mechanism constituted by the torsion spring 8 and the engaging portions 12, 3b. In the elbow interlocking mechanism, the seats 3 on both sides of the column 5 are shown. In this embodiment, when at least one of the two is rotated to the above-mentioned substantially horizontal use position, in this embodiment, the shift direction of the engaging projections 3b on both sides of the seat 3 with respect to the axis C which is the center of rotation is changed. Since it is rearward, the engaging projections 3b on both sides of the seat 3 rise, and FIG.
As shown in FIGS. 4 (b) and 4 (c), the third link member 11 is engaged with the engaging plate 14 at the lower end of the third link member 11 supported by the columns 5 on both sides of the seat 3, and the third link member 11 Respectively
It is raised under the support of the column 5 via the first and second link members 9 and 10.

Here, the rear end of the first link member 9 which is a connecting portion of the elbow 6 is in the same direction as the above-mentioned shift direction of the engaging convex portion 3b of the seat 3 with respect to the axis D which is the center of rotation of the elbow 6. The third link members 11 on both sides of the seat 3 that are raised by the rotation of the seat 3 to the use position are rearward of the first link members 9 on both sides of the seat 3. The end is pushed upward, and the elbows 6 on both sides of the seat 3 are rotated to the above-mentioned substantially horizontal use position, as shown in FIGS. 3 (a), 4 (b) and 4 (c). Therefore, according to the connection chair of this embodiment, when a seated person turns any of the seats 3 to the use position, the elbows 6 on both sides of the seat 3 are moved to the use position in conjunction with the seat 3. It turns into a usable state.

Then, as shown by a two-dot chain line in FIG. 4B, one of the seats 3 on both sides of the elbow 6 located at the use position is moved away from the use position by a person who is there. 4B, the engagement convex portion 3b of the other seat 3 in the use position is still engaged with the engagement plate 14 at the lower end of the third link member 11, as shown by the solid line in FIG. Therefore, the engaging projections 3b of the seat 3 that has been turned to the standing position are separated from the engaging plate 14 and descend, and the engaging projections 3b on both sides of the seat 3 in the use position are in the third position. The elbows 6 on both sides are held in the above-mentioned use position via the link members 11. Therefore, according to the connecting chair of this embodiment, the seated person can continue to use the elbows 6 on both sides thereof.

On the other hand, as shown in FIGS. 3 (b) and 4 (a), the seats 3 on both sides of the elbow 6 located at the use position are both removed, and the person who was there is separated from the use position. When they are turned from the upright position to the upright position, the engaging projections 3b of the seats 3 are lowered together, and the third connected to the elbow 6 located between the seats 3
Since the engaging plate 14 at the lower end of the link member 11 can move downward, the elbow 6 is turned to the upright position by the urging force of the torsion spring 8 that constantly urges the elbow 6 toward the upright position. Therefore, according to the connecting chair of this embodiment, the unused elbow 6
Can be automatically turned to the standing position.

Further, according to the connecting chair of this embodiment, since none of the first to third link members 9 to 11 are connected to the back 4, the back 4 is fixed to the support 5 as shown here. Even in a chair, the seat 3 and the elbow 6 can be interlocked as described above, and none of the first to third link members 9 to 11 have a function of connecting the back 4 to the column 5, and the elbow 6 Since it has only the function of rotating, it is possible to obtain a great degree of freedom in designing the shapes and arrangements of the first to third link members 9 to 11, and thus, it is relatively easy to make the appearance and function of the chair relatively easy. Can be improved.

According to the connecting chair of this embodiment, since the third link member 11 is supported on the column 5 via the second link member 10 so as to be able to move up and down, the third link member 11 can be moved up and down. As a result, the rotation of the elbow 6 can be smoothed, and the third link member 11 is accommodated in the concave portion 5d formed on the side of the column 5, so that the above-described rotation of the elbow 6 can be performed on the connecting chair. The appearance around the column 5 can be simplified while having a dynamic function, and the appearance of the connected chair can be improved.

Although the present invention has been described with reference to the illustrated example, the present invention is not limited to the above-described example. For example, in the above-described embodiment, the third elbow 6 is located at a position shifted rearward from the center of rotation of each elbow 6. Although a connecting portion to the upper end of the link member 11 was provided, at a position shifted forward from the center of rotation of each of the elbows,
In addition to providing a connecting portion to the upper portion of the link member, a hooking portion may be provided at a position shifted forward from the center of rotation of the left and right sides of each seat. Can bring effects.
In the above-described embodiment, the first link members 9 that rotate integrally with the elbows 6 are provided. However, the rear ends of the elbows are extended rearward, and the upper portions of the link members are connected thereto. You may do it. In the above embodiment, the third link member 11 is supported on the support 5 via the second link member 10. However, the link member may be slidably supported on the support so as to be able to move up and down. In this case, for example, a connecting portion may be formed at the rear of each elbow as an elongated hole extending in the radial direction with respect to the center of rotation of each elbow, and the upper portion of the link member may be pin-connected thereto. Further, in the above embodiment, the back 4 is fixed to the column 5, but the back may be moved to the upright position when not in use by linking the back with the seat by a normal link mechanism.

[Brief description of the drawings]

FIG. 1 (a) is an exploded perspective view showing an elbow interlocking mechanism in one embodiment of an elbow interlocking type sitting upright connecting chair of the present invention, and FIGS. 1 (b) and 1 (c) are (a) in FIG. 3 is a cross-sectional view showing a cross section AA and a cross section BB of FIG.

FIG. 2 is a perspective view showing the appearance of the sitting-type connecting chair of the embodiment.

FIG. 3 is an explanatory view showing the operation of the elbow interlocking mechanism in the connecting chair of the embodiment as viewed from obliquely above.

FIG. 4 is an explanatory view showing the operation of the elbow interlocking mechanism in the connecting chair of the embodiment as viewed from the side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connecting pipe 2 Chair 3 Seat 3a, 5b, 6a Bearing hole 3b Engagement convex part 4 Back 5 Post 5a, 5c Support shaft 5d Depression 5e Through hole 6 Elbow 7 Pin 8 Torsion spring 9 First link member 9a, 10a Front end Part 9b, 10b Rear end part 10 Second link member 11 Third link member 11a Upper end part 11b Intermediate part 11c Lower end part 12, 13 pin 14 Hanging plate C, D axis

Claims (3)

[Claims] 1. A plurality of chairs (2) integrally connected to each other, the chairs being respectively located on a seat (3), a back (4) and on both sides of the seat and the back. The strut (5) shared by both chairs except at the end of the connecting chair, and the elbow (6) located adjacent to each of the struts and shared by both chairs except at the end of the connecting chair. The seat is rotatably supported at an intermediate position between the front and rear ends of both sides thereof at an intermediate position between the upper and lower ends of the pillars on both sides, and the seat is substantially horizontally used and substantially vertically. In a sitting upright connecting chair, each elbow can be rotated between a substantially horizontal use position and an upright position in which a front end thereof is raised upward from the position. Each of the supports is rotatably supported by each of the columns, and is constantly urged toward its upright position. A link member (11) extending along the support is supported so as to be able to move up and down, and a link (9b) shifted forward or backward from the center of rotation (D) of each of the elbows is connected to the link by the link. An upper portion (11a) of the member is connected, and a hooking portion (3b) is provided at a position shifted from the center of rotation (C) of the left and right side portions of each seat in the same direction as the shift direction of the connecting portion of the elbow. A hook portion (14), which can be hooked and separated from the hook portions of the seats on both sides of the link member, below the link member.
However, when the shift direction of the engaging portion of the seat is rearward with respect to the center of rotation, it is located above the engaging portion of the seat, and when the shifting direction of the engaging portion of the seat is forward with respect to the center of rotation. Is provided so as to be located below a hooking portion of the seat, and the elbow-linked sitting upright-type connecting chair is provided. 2. An elbow-linked seat-standing connection according to claim 1, wherein the link member is supported by the support column so as to be able to move up and down via another link member. Chair. 3. The elbow-linked seat upright according to claim 1, wherein the link member is accommodated in a concave portion (5d) formed on a side portion of the column. Type connection chair.