JPS64118Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a seat chair, more specifically, a backrest is supported behind the seat body so that the angle can be changed in the front and back direction, and support frames for armrests are provided on both sides of the seat body in the width direction.
The present invention also relates to a chair in which armrest frames are pivotally supported on both sides of the backrest in the width direction, and the armrests are fixed to the armrest frames via attachment fittings.

In general, this type of seat chair has an armrest frame pivotably supported on the side of the backrest, and a free end end of a support frame pivoted on the side of the seat body. The armrest is supported parallel to the body, and the armrest can be moved in parallel as the angle of the armrest changes.

However, in the above-mentioned chair, a connecting fitting of a separate member is used to pivotally connect the free end side tip of the support frame to the armrest frame. The armrest frame and the support frame are integrally connected by irremovably pivoting the free end side tip of the support frame to the metal fitting.

Therefore, in the above-mentioned chair, the connecting fittings for connecting the armrest frame and the support frame must be manufactured separately, and the connecting fittings must be installed, which increases the number of assembly steps. The installation work becomes complicated, and the armrests cannot be retracted when getting on and off the seat, and the armrests get in the way, making it inconvenient to get on and off the seat.

The present invention was devised in view of the above-mentioned problems, and uses a mounting bracket for fixing the armrest to the armrest frame to pivotally connect the free end side tip of the support frame to the armrest frame. A support frame is configured to be removably pivotally connected to the armrest frame via the mounting bracket,
To provide a chair that is convenient for getting on and off the seat body by making the armrest retractable without using a connecting metal fitting as a separate member for connecting an armrest frame and a support frame.

More specifically, a backrest is supported behind the seat body so that its angle can be changed in the front-back direction, armrest support frames are supported on both sides of the seat body in the width direction, and armrest frames are pivotably supported on both sides of the backrest in the width direction. and a seat in which the armrest is fixed to the armrest frame via a mounting bracket,
A connecting body extending downward and having a thickness is integrally provided on the mounting bracket, and is open at the front and bottom surfaces of the connecting body at approximately the center in the thickness direction at the bottom of the connecting body, An insertion groove for allowing insertion of the support frame is provided, and an engagement groove is provided on the side surface of the connecting body that opens at the front surface and opens the insertion groove to the outer surface in the thickness direction. engaging the engagement groove at the portion;
and a locking body that protrudes outward from the side surface of the connecting body when engaged with the engaging groove, further having an intermediate portion bulging outward on both sides of the connecting body, and the locking body protruding outward from the side surface of the connecting body. The device is characterized in that it is equipped with a leaf spring having a bulge that receives and elastically locks.

The present invention will be explained below with reference to embodiments shown in the drawings.

The chair shown in the drawings supports a backrest 2 behind a seat 1 via a known reclining member 3 so as to be able to change the angle in the front-rear direction of the seat 1.
Support frames 6 of the armrest 4 are provided on both sides of the seat body 1 in the width direction, and armrest frames 5 are provided on both sides of the backrest 2 in the width direction, respectively, with pivot supports 5a and 6 independently.
a, and the armrest 4 is fixed to the armrest frame 5 via mounting fittings 7f and 10.

The mounting bracket 7f has a circular arc portion 7d and a circular arc portion 7.
The armrest frame 5 is integrally attached to the inside of the circular arc portion 7d, and the mounting plates 7e, 7e extend outward from the arc portion 7d.
The armrest 4 is to be fixed to the armrest frame 5 via the armrest 7e.

The mounting bracket 10 has the same configuration as the mounting bracket 7f, and is intended to fix the rear side of the armrest 4 to the armrest frame 5.

A connecting body 7 having a rectangular cross section and extending downward and having a thickness is integrally provided at the lower part of the mounting bracket 7f fixed to the front side of the armrest 4. An insertion groove 7g is provided at approximately the center of the connecting body 7 in the thickness direction, and is open at the front surface 7a and the lower surface of the connecting body 7 and allows insertion of the free end side tip of the supporting frame 6. Engagement grooves 7c, 7c that are open at the front surface 7a, open the insertion groove 7g to the outer surface in the thickness direction, and slope rearward and upward are provided approximately in the center of the opposing side surfaces 7b, 7b. There is.

On the other hand, the distal end of the support frame 6 has a groove that engages with the engagement grooves 7c, 7c of the connecting body 7 provided on the mounting bracket 7f, and when engaged with the engagement grooves 7c, 7c. A locking body 9 protruding outward from the side surfaces 7b, 7b of the connecting body 7 is provided.

Further, on both side surfaces 7b, 7b of the connecting body 7, a curved bulging portion 8b is provided on both side surfaces 7b, 7b of which the intermediate portion bulges outward to receive and elastically lock the locking body 9 provided on the support frame 6. , 8b and a U-shaped cross section is provided.

In this way, the connection between the armrest frame 5 and the distal ends of the support frame 6 is connected to the connection body 7 that is integrally provided with the mounting bracket 7f that fixes the armrest 4 to the armrest frame 5. This is done by pivoting the free end end of the support frame 6, and inserting the free end end of the support frame 6 into the insertion groove 7g of the connecting body 7 from the open part of the front surface 7a. Both protruding ends of the locking body 9 on the support frame 6 are moved inside from the front surface 7a of the connecting body 7 along the engagement grooves 7c, 7c while resisting the elastic force of both side walls 8a, 8a of the leaf spring 8. Both protruding ends of the locking body 9 are elastically locked by the bulges 8b, 8b of the spring 8, and the locking body 9, that is, the support frame 6 is connected to the connecting body 7. This is done so that they can be connected removably.

Incidentally, the engagement groove 7c of the connecting body 7 is
It has a large diameter on the front surface 7a side, and an arcuate surface is formed on the front lower edge of the engagement groove 7c to facilitate insertion and guidance of the locking body 9 into the engagement groove 7c.

In the figure, 11 is a screw for attaching the leaf spring 8 to the connecting body 7. The seat body 1 is composed of a bottom frame 1a and a cushion material 1c covered with an exterior material 1b such as cloth, and the support frame 6 is pivotably supported on the bottom frame 1a via a support 1d. 6a is allowed.

Further, the backrest 2 includes a backrest frame 2a.
and a cushion material 2c covered with an exterior material 2b, and the armrest frame 5 is pivotally supported on this backrest frame 2a via a support 2d so as to be freely swingable.

Further, the armrest 4 is formed by covering a cushion material with an exterior material in the same manner as described above.

The chair of the present invention is constructed as described above.
When sitting on the seat body 1, insert the free end side tip of the support frame 6 into the insertion groove 7g of the connecting body 7 below the mounting bracket 7f fixed to the armrest 4 from the front opening, and Both protruding ends of the locking body 9 in 6 are pivotally connected to the engagement grooves 7c, 7c of the connecting body 7 of the mounting bracket 7f, and are elastically locked by the bulges 8a, 8a of the leaf spring 8. By pivotally connecting the support frame 6 to the armrest frame 5, the armrest 4 is supported parallel to the seat body 1, and when the angle of the backrest 2 is changed in the front-rear direction, the armrest 4 is supported parallel to the seat body 1. It is moved in parallel.

Therefore, when getting on or off the seat 1, the locking body 9 of the support frame 6 is moved from the engagement grooves 7c, 7c of the connecting body 7 of the mounting bracket 7f to the elasticity of the bulging portions 8a, 8a of the leaf spring 8. The front surface 7a of the connecting body 7 is detached outwardly against the force, and the supporting frame 6
Take out the free end side tip part from the insertion groove of the connecting body 7, release the connection between the support frame 6 and the armrest frame 5, swing the armrest frame 5 upwards or downwards, and turn the armrest 4 into a backrest. 2 is retracted to the side, and the support frame 6 is swung and retracted to the side of the seat 1. Then, the seat 1
The sides of the seat body 1 are opened, making it easier to get on and off the seat body 1.

As explained above, the chair of the present invention utilizes a mounting bracket for fixing the armrest to the armrest frame, and integrally provides a connecting body extending downward and having a thickness on the mounting bracket, so that the armrest can be fixed to the armrest frame. Since the support frame is pivotally connected to the armrest frame via the mounting bracket, it is not necessary to provide a separate connection bracket for connecting the armrest frame and the support frame on the armrest frame, and the configuration can be simplified. Furthermore, a simple shape such as a commonly used pipe with a small diameter can be used as the armrest frame, which simplifies the installation process and facilitates the installation process.

Moreover, an insertion groove is provided in the lower part of the connecting body of the mounting bracket in the thickness direction, and is open at the front and bottom surfaces of the connecting body to allow insertion of the support frame. , an engagement groove is provided that is open at the front surface and opens the insertion groove to the outer surface in the thickness direction, and is engaged with the engagement groove at the tip of the support frame, and
A locking body is provided that protrudes outward from the side surface of the connecting body when engaged with the engagement groove, and further, an intermediate portion of both sides of the connecting body bulges outward to receive the locking body. By installing a leaf spring having a bulge that elastically locks, when the connecting body and the support frame are connected, the free end side tip of the support frame is accommodated in the insertion groove of the connecting body. In addition, the locking bodies of the support frame are pivotally attached to both engaging grooves on the side surfaces of the connecting body, and can be elastically locked from both sides by the bulges of the leaf springs, and the connecting body, that is, the armrest This allows the support frame to be connected to the frame more reliably.

Furthermore, since the support frame and the connecting body, that is, the armrest frame, can be disconnected from each other to open the seat side, the support frame and the armrest frame can be retracted when getting on or off the seat. Therefore, it is very convenient to get on and off the seat.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of the chair according to the present invention, Fig. 2 is a front view of the main parts, Fig. 3 is a partially cutaway side view thereof, and Fig. 4 is a plan sectional view thereof. It is. 1...sitting body, 2...backrest, 4...armrest,
5... Armrest frame, 6... Support frame, 7
... Connecting body, 7c... Engagement groove, 7g... Insertion groove,
7f... Mounting bracket, 8... Leaf spring, 8b... Swelling portion, 9... Locking body.

Claims (1)

[Scope of utility model registration request] A backrest is supported behind the seat body so that its angle can be changed in the front and back direction, and support frames for armrests are supported on both sides of the seat body in the width direction, and armrest frames are pivotally supported on both sides of the backrest in the width direction,
The chair has the armrest fixed to the armrest frame via a mounting bracket, and the mounting bracket is integrally provided with a connecting body that extends downward and has a thickness. An insertion groove is provided in the lower part in the thickness direction substantially in the center, which is open at the front and lower surfaces of the connecting body and allows the support frame to be inserted therein, and an insertion groove is provided at the side surface of the connecting body, which is open at the front and which allows the support frame to be inserted. An engagement groove that opens the insertion groove to the outer surface in the thickness direction is provided, and the distal end of the support frame engages with the engagement groove, and when engaged with the engagement groove, the connecting body A plate spring provided with a locking body projecting outward from the side surface, and further having bulges on both sides of the connecting body that bulge an intermediate portion outward and elastically lock the locking body to receive the locking body. A seat chair characterized by having a.