JPH1156516A - Fixing structure of chair operating lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of an operating lever by a sitting person by installing the chair operating lever at a part being the edge of the rear side of a seat and being at a part just at the side of a leg pole. SOLUTION: The chair operating lever 2 is installed at a part being the edge of the rear side of a seat 1, namely a seat outer shell 6, and being at a part just at the side of a leg pole 8. In addition, a fixing part 13 for fixing an arm rest 10 to the shell 6 is provided with a lever exposing part 14 exposing the lever 2. Then the lever 2 is exposed from the part 14 and the part 13 is screwed to the shell 6. Consequently, as the lever 2 is installed just at the side of the pole 8 and the centroid of a person taking the seat is positioned just over the pole 8, the lever 2 is positioned at a place where the sitting person naturally suspends both of his hands outside of the rest 10. Thereby, as the sitting person easily reaches the lever 2, the operability of the lever 2 is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of an operation lever for operating a lifting mechanism for a chair seat, a tilt mechanism for a backrest, and the like. More specifically, the present invention relates to an operation lever mounting structure particularly suitable for a chair having an armrest (armrest).

[0002]

2. Description of the Related Art In a chair provided with a mechanism for raising and lowering a seat, a mechanism for tilting a backrest, etc., an operation lever for operating each of these mechanisms is provided at a front edge of a back side of the seat so as to avoid a mounting position of a backrest or an armrest. It is often provided nearby.
For example, as shown in FIG. 8, an operation lever 100 is provided at a front edge of a seat back cover 102 attached to the back side of the seat 101. In the chair having such a structure, the occupant extends his / her hand from the front of the seat 101 to the lower side and the rear side to move the operation lever 10.
By operating 0, the elevation mechanism of the seat and the inclination mechanism of the backrest are operated.

[0003]

However, in the above-described structure for mounting the operation lever of the chair, the operation lever 100 is not provided.
Is installed at the front edge of the back of the seat, the seat must be bent forward when the occupant operates the operation lever 100, which is inconvenient and inferior in operability. Especially,
In order to lock the backrest at a desired angle by operating the tilting mechanism of the backrest, the operation lever 100 must be operated while the weight must be hung on the backrest and lowered. Is located behind the front edge of the seat 101, the upper body must be raised to operate it. For this reason, the weight applied to the backrest during that time may be reduced, and the backrest may rise. In particular, a small person has a short hand, so that the user has to bend forward greatly to operate the operation lever, and the backrest may be raised in combination with the light weight. That is, it was difficult to lock the backrest at a desired angle, and the operability was not good.

Accordingly, an object of the present invention is to provide a chair operating lever mounting structure that can improve the operability of a chair operating lever.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a chair operating lever mounting structure in which the operating lever of the chair is an edge at the back of the seat and a portion immediately beside the pillar. To be installed in Accordingly, since the center of gravity of the seated person is right above the pillar, when the seated person drops his arm outside the chair, the seated person is naturally located at the installation position of the operation lever. For this reason, the seated person can operate the operation lever with little movement of the upper body while sitting. In addition, even when the seated person leans on the backrest with his or her weight, the operation lever can be easily reached and the operation can be performed.

According to a second aspect of the present invention, there is provided a chair operating lever mounting structure in which a lever exposing portion is formed in a mounting portion of a chair to a seat of an armrest and an operating lever is installed at a position exposed from the lever exposing portion. ing. In this case, since the armrest is provided near the arm of the occupant, if the occupant hangs his arm outside the armrest, the armrest is naturally located at the place where the operation lever is installed. For this reason, the seated person can operate the operation lever with little movement of the upper body while sitting. In addition, even when the seated person leans on the backrest with his or her weight, the operation lever can be easily reached and the operation can be performed.

Further, in the structure for mounting the operation lever of the chair according to the third aspect, the operation lever is arranged at the edge of the seat back and at a position just beside the pillar. Therefore, since the center of gravity of the occupant is directly above the pillar, the control lever is located within the reach of the occupant when the arm is dropped outside the armrest, so the occupant can move the upper body almost without moving The operation lever can be operated in the posture of. In addition, even when the seated person leans on the backrest with his or her weight, the operation lever can be easily reached and the operation can be performed.

[0008] In the chair operating lever mounting structure according to the fourth aspect, a finger hook is provided on the outer peripheral side of the seat with respect to the operating lever. Therefore, when the occupant operates the operation lever, it is possible to pull the operation lever with another finger while hooking the thumb on the finger holder. This makes it possible to easily operate the operation lever using the hand gripping force in addition to the arm pulling force.

Further, in the structure for mounting the operating lever of the chair according to the fifth aspect, the mounting portion of the armrest and the back are provided with a guide portion for guiding the armrest to the mounting position by fitting. Therefore, when the mounting portion of the armrest is mounted on the back side of the seat, the lever exposure portion of the armrest is guided by the guide portion and can be easily located at an appropriate mounting position.

Further, in the structure for mounting the operating lever of a chair according to claim 6, the guide portion is a guide projection formed along two different directions around the operating lever on the back of the seat, and the guide projection is provided on the armrest. The lever is fitted to the periphery of the exposed portion. Therefore, since the guide portion regulates the lever exposure portion of the armrest in two different directions on the seat back, the lever exposure portion can be positioned at a predetermined mounting position.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail based on an example of an embodiment shown in the drawings. 1 to 3 show an example of an embodiment of a chair to which the operation lever mounting structure of the present invention is applied. This chair has an operation lever 2 attached to a seat 1. The seat 1 includes a seat inner shell 3, which is a plate made of resin, a cushion 4 such as urethane foam placed on the seat inner shell 3, and an upper covering 5 covering the cushion 4 and the seat inner shell 3.
And a seat outer shell 6 made of resin, which is attached to the lower side of the seat 1 to secure the rigidity of the seat 1 and also covers the upper lining 5 and the rear surface of the seat inner shell 3. The seat 1 is attached to and supported by a pillar 8 via a seat bracket 7. A seat elevating mechanism 9 and a backrest inclining mechanism are incorporated in the seat bracket 7. In this embodiment, the seat 1
Although the rigidity of the seat 1 is secured by the seat outer shell 6, the present invention is not limited to this, and the rigidity of the seat 1 may be secured by the seat inner shell 3 and the seat outer shell 6 may be a seat back cover having a small rigidity.

The operating lever 2 is arranged at the back of the seat, that is, at the edge of the outer shell 6 and beside the pillar 8. In the present embodiment, an armrest 10 is attached to the seat 1. Here, since the operating lever 2 is installed right beside the pillar 8 and the center of gravity of the seated person is located right above the pillar 8, the place where the seated person naturally hangs both hands on the outside of the armrest 10 is set. The operation lever 2 is located at the position shown in FIG. Thereby, the occupant can easily reach the operation lever 2 with the hand 11, so that the operability of the operation lever 2 can be improved.

The armrest 10 has an armrest portion 12 on which the arm is placed and a mounting portion 13 to be attached to the seat outer shell 6. Although the shape of the armrest portion 12 is not particularly limited, it is annular in this embodiment. Mounting part 13
Is provided with a lever exposure portion 14 for exposing the operation lever 2. Then, the operation lever 2 is exposed from the lever exposure portion 14, and the mounting portion 13 is screwed to the seat outer shell 6.

The mounting portion 13 is formed of a rectangular frame. Inside the frame, a lever exposed portion 14 formed of a rectangular through hole is provided.
Are formed. Frame member 13 of mounting portion 13 on pillar 8 side
A fastening hole 15 formed of a through hole is formed at three places, i.e., a and the front and rear frame members 13b, 13b. This fastening hole 1
5 is fixed to the seat outer shell 6 with bolts 16. Thereby, the mounting portion 13 is mounted on the seat outer shell 6. Here, the operation lever 2 is the lever exposure portion 1
The mounting portion 13 is mounted on the seat outer shell 6 so as to be exposed from the outer shell 4. . As a result, the armrest 10 is located right beside the seat 1. For this reason, the seated person can install the armrest 10 at the position where it is most easily used.

Further, a frame member located on the outer peripheral side of the seat 1 with respect to the operation lever 2 of the mounting portion 13 of the armrest 10 is a finger hook portion 17. Then, when the occupant pulls the operation lever 2 toward the outer peripheral side of the seat 1, the thumb 11a is hung on the upper surface of the finger hook portion 17 and the operation lever 2 is pulled with the other finger 11b. Thus, the operation of pulling the operation lever 2 can be performed using not only the force of the arm but also the grip force of the hand 11, so that the operability can be improved.

On the other hand, the operating lever 2 is installed on the back side of the seat 1 and protrudes from the exposed hole 6a of the outer shell 6 of the seat. On the periphery of the exposed hole 6a of the seat outer shell 6,
A guide portion 18 that fits around the periphery of the lever exposure portion 14 of the armrest 10 and guides the armrest 10 to the mounting position is formed. The guide portion 18 is a guide protrusion protruding toward the outer surface along two different directions.
In the present embodiment, the guide portion 18 is formed over the entire periphery of the periphery of the exposure hole 6a. Further, the guide portion 18 is formed integrally with the seat outer shell 6. In the present embodiment, the guide portion 18 is formed integrally with the seat outer shell 6. However, the present invention is not limited to this, and a separate guide member may be attached to the periphery of the exposed hole 6 a of the seat outer shell 6.

The lever exposure portion 14 of the mounting portion 13 of the armrest 10 is guided around the guide portion 18 and positioned. For this reason, the mounting portion 1 of the armrest 10
When the screw 3 is screwed to the seat outer shell 6, the mounting portion 1
3 can be easily positioned.

In the embodiment, the guide portion 18 is formed on the seat outer shell 6, but the present invention is not limited to this. For example, the guide portion 18 may not be provided. Even in this case, since the operation lever 2 is arranged at the edge of the seat outer shell 6 and at a position just beside the pillar 8, the operation lever naturally falls when the occupant drops his arm outside the chair. The operability of the operation lever 2 can be improved by being located at the installation position of the operation lever 2.

A portion 13c of the frame member 13a on the side of the pillar 8 which is guided by the guide portion 18 is chamfered to form the guide portion 18a.
Face to face. For this reason, the guide portion 18
Guidance can be performed with higher accuracy. In this embodiment, the portion 1 guided by the guide portion 18 of the frame member 13a
Although 3c is chamfered, the present invention is not limited to this, and the chamfered portion 13c 'may not be chamfered as shown by a two-dot chain line in FIG. For this reason, the presence or absence of chamfering can be selected according to the convenience of the mold of the armrest 10.

The operation lever 2 is rotatable about a support shaft 19 supported by a bearing (not shown) formed integrally with the seat outer shell 6. One end of a wire 20 is locked to the operation lever 2.
This wire 20 is slidable with respect to a wire tube 21. The end of the wire tube 21 is fixed to the seat outer shell 6 by a stopper (not shown). Therefore, the wire 20 is pulled out from the wire tube 21 by the pulling operation of the operation lever 2.

On the other hand, the other ends of the wire 20 and the wire tube 21 are connected to a movable mechanism of the chair such as a seat elevating mechanism 9 and a backrest tilting mechanism. Here, the case where the wire 20 and the wire tube 21 are connected to, for example, the lifting mechanism 9 of the seat as shown in FIG. 4 will be described.

The seat elevating mechanism 9 includes a gas spring built in the pillar 8 and an elevating lever 23 capable of pressing a lock pin 22 at the upper end of the gas spring. The lifting lever 23 is rotatable about a support shaft 24 supported by a bearing (not shown) on the seat bracket 7. The lifting lever 23 includes a pressing portion 25 capable of pressing the tip of the lock pin 22 of the gas spring of the pillar 8 and the wire 2.
0, and a tension portion 26 connected to the other end. The other end of the wire tube 21 is fixed to the seat fitting 7 by a stopper (not shown).

Here, the lifting lever 23 is connected to the lock pin 22.
Thus, it is urged in the left rotation direction in FIG. For this reason,
The operation lever 2 is pulled toward the center of the seat via the wire 20. When the occupant tilts the operation lever 2 outward, the wire 20 is pulled out toward the operation lever 2 with respect to the wire tube 21. Thus, the wire 20 pulls and rotates the pulling portion 26 of the lifting lever. Then, the lock pin 22 of the gas spring is pushed by the pressing portion 25, and the lock of the gas spring is released. For this reason,
Since the gas spring can expand and contract, the seat 1 can be moved up and down.

In this embodiment, the operation lever 2 is connected to the lifting mechanism 9 of the seat. However, the present invention is not limited to this. For example, the operation lever 2 can be connected to a tilt mechanism of the backrest. In this case, the occupant places the arm immediately beside the upper body and operates the operation lever 2.
Can be operated, so that the operating lever 2 can be operated to lock the inclination of the backrest or the like even in a state where the backrest is leaned with weight. Thus, the arm is not forcibly extended forward to operate the operation lever 2 and the upper body is not raised, so that the backrest can be easily locked with the backrest inclined and the operability can be improved. .

When using the above-mentioned chair, when the occupant drops his arm outside the chair, the chair is naturally located at the place where the operation lever 2 is installed. For this reason, the seated person can operate the operation lever 2 while sitting and hardly moving the upper body. When the occupant operates the operation lever 2, the thumb 11 a is hung on the upper surface of the finger hook portion 17 and the operation lever 2 is pulled with the other finger 11 b. Thus, the operation of pulling the operation lever 2 can be performed using not only the force of the arm but also the grip force of the hand 11.

When assembling the above-described chair, when the mounting portion 13 of the armrest 10 is screwed to the seat outer shell 6, the lever exposure portion 14 of the mounting portion 13 is guided around the guide portion 18 and positioned. You.

According to the present embodiment, the operating lever 2 is installed at the edge of the seat outer shell 6 and at a position just beside the pillar 8, so that the occupant can place his arm on the outside of the chair. Can be naturally located at the place where the operation lever 2 is installed. In particular, in the present embodiment, since the armrest 10 is attached to the seat 1, when the occupant hangs his arm outside the armrest 10, the occupant can naturally be located at the installation position of the operation lever 2. For this reason, the seated person can operate the operation lever 2 with little movement of the upper body while sitting, and the operability can be improved. In addition, for example, even when a seated person in a rockable chair leans on his backrest with his or her weight, the operation lever 2 can be easily reached and operated. For this reason, it is not necessary to extend the hand to operate the operation lever 2 and to raise the upper body. Therefore, the backrest can be easily locked while the backrest is inclined, and the operability can be improved.

Further, according to the present embodiment, when the occupant pulls the operation lever 2 toward the outer peripheral side of the seat 1, he / she puts the thumb 11a on the upper surface of the finger hook portion 17 and pulls the operation lever 2 with another finger 11b. Therefore, the operation of pulling the operation lever 2 can be performed using the gripping force of the hand 11 as well as the force of the arm. Thereby, the operability of the operation lever 2 can be improved.

Further, according to the present embodiment, since the lever exposed portion 14 of the mounting portion 13 of the armrest 10 is guided and positioned around the guide portion 18, the armrest 1
When the 0 mounting portion 13 is screwed to the seat outer shell 6, the positioning of the mounting portion 13 can be easily performed.
Thereby, the assembling workability of the chair can be improved. In particular, in the present embodiment, since the lever exposure portion 14 is a rectangular through hole, the lever exposure portion 14 can be positioned by being regulated in all directions with respect to the guide portion 18.

The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the spirit of the present invention. For example, in the present embodiment, the operation lever 2 and the armrest 10 are installed at a position just beside the pillar 8 at the edge of the seat outer shell 6, but the present invention is not limited to this, and the arm may be dropped from the armrest 10 and the posture may be greatly increased. Can be installed on the front side or the rear side of the position within a range where the hand can touch the operation lever 2 without breaking the position. Also in this case, the operation lever 2 is moved from the lever exposure portion 14 of the mounting portion 13 of the armrest 10.
Is exposed, the hand 11 is naturally located at the place where the operation lever 2 is installed when the occupant drops his arm from the armrest 10. Therefore, the operability of the operation lever 2 can be improved. In addition, the exposed hole 6 of the seat outer shell 6 is provided.
The guide portion 18 is provided around the periphery of the mounting portion 13.
Of course, can be positioned with high accuracy on the seat outer shell 6.

In the above-described embodiment, the finger rest 17 is formed on the armrest 10. However, the present invention is not limited to this. For example, as shown in FIG. It can be formed on the outer peripheral side of the seat 1. In this case, the mounting portion 1 of the armrest 10
Of the three frames, the frame member on the outer peripheral side of the seat 1 is omitted, and the lever exposed portion 14 is formed into a cutout shape which is not a through hole but extends to the outer peripheral side of the seat 1. Then, the operation lever 2 and the finger hook 17 ′ are positioned on the notched lever exposure portion 14. As a result, the seated person can take the finger rest 17 ′ of the seat 1.
Since the operating lever 2 can be pulled with another finger while hooking the thumb, the operating lever 2 can be operated using the gripping force of the hand in addition to the pulling force by the arm, and the operability can be improved. it can.

Further, in the embodiment shown in FIGS. 1 to 4, the lever exposure portion 14 of the armrest 10 is formed as a through hole, but is not limited to this. For example, as shown in FIG. Of these, the frame member on the side of the pillar 8 can be omitted to form a cutout shape in which the lever exposed portion 14 is cut off toward the pillar 8 side. In this case, when assembling the mounting portion 13 to the seat outer shell 6, the positioning can be performed while sliding along the guide portion 18 from the open distal end side of the lever exposure portion 14. Thereby, the mounting work of the armrest 10 can be easily performed.

In each of the embodiments shown in FIGS. 1 to 6, the guide portion 18 is formed over the entire periphery of the mounting hole 6a of the seat outer shell 6, but is not limited to this. As shown in (1), the guide portion 18 can be formed as guide projections formed at three edges of the periphery of the mounting hole 6a in the front-rear direction of the chair and the center side of the chair. in this case,
The edges of the lever exposure portion 14 of the armrest 10 are pressed against the guide portion 18 by three edges in the front-rear direction of the chair and the center side of the chair, thereby positioning the mounting portion 13 on the seat outer shell 6. It can be carried out. further,
By engaging the mounting portion 13 of the armrest 10 with the side portion 27 of the seat outer shell 6, the positioning of the mounting portion 13 with respect to the seat outer shell 6 can be performed.

In each of the above embodiments, the guide 1
8 is a guide projection formed on four sides or three sides of the periphery of the mounting hole 6a of the seat outer shell 6, but is not limited to this, and the guide portion 18 is provided along two different directions formed on the periphery of the mounting hole 6a. If it is a guide projection, it is enough. The two directions here include, for example, two directions orthogonal to the front-rear direction and the width direction of the chair, and two directions opened at an appropriate angle such as 60 degrees. And the mounting hole 6a
Of the armrest 10 on the back of the seat due to the presence of guide projections along two different directions on the periphery of the seat.
Since the direction is regulated in the direction, the mounting portion 13 can be positioned.

Further, in each of the above-described embodiments, the guide portion 18 is a guide projection formed on the periphery of the mounting hole 6a of the seat outer shell 6, but the present invention is not limited to this, and the armrest 10 is brought into an appropriate mounting position by fitting. Anything that guides you is fine. For example, as shown in FIG.
A concave portion 18 'on the back of the seat where the mounting portion 13 of the armrest 10 is inserted and positioned can be provided. In this case, the mounting position of the armrest 10 can be determined without forming a guide projection on the periphery of the mounting hole 6a of the seat outer shell 6.

In each of the above-described embodiments, the mounting portion 13 for the operation lever 2 and the armrest 10 is installed at the edge of the seat outer shell 6 and at a position just beside the pillar 8. I can't. For example, the mounting position of the mounting portion 13 of the armrest 10 is set to a position forward or rearward of the side of the armrest 10, and the lever exposure portion 1 is attached to the mounting portion 13.
4, the operation lever 2 can be exposed.
In this case, if the occupant drops his arm outward from a state in which the armrest is placed on the armrest 10, the occupant is naturally located at the place where the operation lever 2 is installed. For this reason, the occupant can easily reach the operation lever 2 with the hand 11, so that the operability of the operation lever 2 can be improved.

Furthermore, in each of the above embodiments, the chair to which the armrest 10 is previously mounted has been mainly described. However, the present invention is not particularly limited to this, and the present invention can be applied to a case where the armrest is mounted by retrofitting.
That is, if the form of the mounting portion 13 of the armrest is commonly used in the above-described various shapes such as the annular shape, the U shape, and the fork shape, the mounting portion 13 of the armrest is arranged around the operation lever 2 when the armrest is required. It can be arranged and attached to the seat 1.

Further, in each of the above-described embodiments, the case where the operation lever mounting structure of the present invention is applied to a chair provided with the armrest 10 is described. However, the present invention is not limited to this. It can be applied to a detachable and retrofittable chair. Also in this case, since the operation lever 2 is installed at the edge of the seat outer shell 6 and at the position just beside the pillar 8,
The operation lever 2 is located at a position where the occupant naturally hangs both hands outside the seat 1. For this reason, the occupant can easily reach the operation lever 2 with the hand 11, so that the operability of the operation lever 2 can be improved.

[0039]

As is apparent from the above description, in the structure for mounting the operating lever of the chair according to the first aspect, the operating lever of the chair is installed at the edge of the back of the seat and at the position just beside the pillar. When the occupant drops his arm outside the chair, the occupant is naturally located at the place where the operation lever is installed. For this reason, the seated person can operate the operation lever with little movement of the upper body while sitting, and the operability can be improved. In addition, even when the seated person leans on the backrest with his or her weight, the operation lever can be easily reached and the operation can be performed. For this reason, it is not necessary to extend the hand to operate the operation lever and raise the upper body, so that it is possible to easily lock the backrest with the backrest inclined and to improve the operability.

According to a second aspect of the present invention, in the structure for mounting a control lever of a chair, a lever exposure portion is formed in a mounting portion of a chair to a seat of an armrest, and an operation lever is installed at a position exposed from the lever exposure portion. Therefore, if the occupant drops his arm outside the armrest, the occupant is naturally located at the place where the operation lever is installed. For this reason, the occupant can operate the operation lever with little movement of the upper body while sitting, and operability can be improved. In addition, even when the seated person leans on the backrest with his or her weight, the operation lever can be easily reached and the operation can be performed. This prevents the upper body from being raised by forcibly extending the hand to operate the operation lever, so that the backrest can be easily locked while being tilted, and the operability can be improved.

Further, in the structure for mounting the operation lever of the chair according to the third aspect, the operation lever is arranged at the edge of the back of the seat and at the position just beside the pillar. Since the operation lever is located within a range where the seated person can reach when the arm is dropped on the outside of the armrest, the seated person can operate the operation lever in the same posture without moving the upper body. Therefore, the operation lever can be operated while the seated person leans on the backrest while leaning, and there is no need to forcibly extend the hand to raise the upper body to operate the operation lever. Easy to operate without any unintentional standing of the backrest
It becomes easy to use.

Further, in the structure for mounting the operating lever of the chair according to the fourth aspect, since the finger-holding portion is provided on the outer peripheral side of the seat rather than the operating lever, when the occupant operates the operating lever. The user can pull the operation lever with another finger while hooking the thumb on the finger hook. This makes it possible to easily operate the operation lever using the gripping force of the hand in addition to the pulling force by the arm, thereby improving operability.

Further, in the structure for mounting the operation lever of the chair according to the fifth aspect, the mounting portion of the armrest and the back are provided with a guide portion for guiding the armrest to the mounting position by fitting, so that the armrest of the armrest is provided. When the mounting portion is mounted on the seat, the lever exposure portion of the armrest is guided by the guide portion and can be easily located at a proper mounting position. Therefore, the workability of mounting the armrest is improved, and the assembling time of the chair can be reduced.

In the structure for mounting the operating lever of a chair according to the sixth aspect, the guide portion is a guide projection formed around the operating lever on the back and along two different directions, and the guide projection is formed on the armrest. Since the lever is adapted to be fitted to the periphery of the exposed portion, the guide portion regulates the exposed portion of the armrest in two different directions on the seat back, so that the exposed portion can be positioned at a predetermined mounting position. . For this reason, the mounting work of the armrest is further facilitated, and the assembling time of the chair can be reduced.

[Brief description of the drawings]

FIG. 1 is a bottom view of a chair showing an embodiment of an operation lever mounting structure for a chair of the present invention.

FIG. 2 is a sectional view showing a state cut along a line II-II in FIG. 1;

FIG. 3 is a perspective view showing a state where an armrest is attached to a seat outer shell.

FIG. 4 is a side view showing a seat elevating mechanism.

FIG. 5 is a perspective view showing another embodiment of the armrest.

FIG. 6 is a perspective view showing another embodiment of the armrest.

FIG. 7 is a perspective view showing still another embodiment of the armrest.

FIG. 8 is a bottom view of a chair showing an attachment position of an operation lever of a conventional chair.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Operating lever 6 Seat outer shell (back of seat) 8 Pillar 10 Armrest 13 Mounting part 14 Lever exposed part 17 Finger part 18 Guide part

Continued on the front page (72) Inventor Toru Aoyagi 5331 Nishiharu Kinoshitagawara, Ina-shi, Nagano Takano Co., Ltd. Furniture Development Dept. In-company (72) Inventor Kayoko Nishimura 6-1-1, Oimazato-minami, Higashi-Nari-ku, Osaka-shi, Osaka Inside KOKUYO Corporation

Claims (6)

[Claims] 1. A mounting structure for an operating lever of a chair, wherein the operating lever of the chair is installed at an edge of the back of the seat and at a position just beside the pillar. 2. A mounting structure for an operation lever of a chair, wherein a lever exposure portion is formed in a mounting portion of a chair to a seat of an armrest and an operation lever is installed at a position exposed from the lever exposure portion. 3. The mounting structure for an operating lever of a chair according to claim 2, wherein the operating lever is an edge of the back of the seat and is disposed at a position right beside the pillar. 4. The apparatus according to claim 2, wherein a finger hook is provided on an outer peripheral side of the seat with respect to the operation lever.
Or the mounting structure of the operation lever of the chair according to claim 3. 5. The armrest according to claim 2, wherein the mounting portion of the armrest and the seat back have a guide portion for guiding the armrest to a mounting position by fitting. Mounting structure of the operation lever of the chair. 6. The guide portion is a guide protrusion formed around the operation lever on the back of the seat along two different directions, and the guide protrusion is fitted on a periphery of the lever exposed portion of the armrest. 6. The method according to claim 5, wherein
Mounting structure of the operation lever of the chair described in the above.