KR19990016114U - Swivel chair with folded back - Google Patents

Abstract

In the revolving chair having a hand rest, the backrest portion can be folded within a predetermined angle range with respect to the seat portion.

According to a preferred embodiment of the present invention, in the rotary chair having the backrests mounted on both sides of the handrest, a support member formed on the bottom of the handrest, a seat portion movably seated on the support member in a forward and backward direction, It is rotatably fixed to the hand rest and is formed to be foldable within a predetermined angle range with respect to the seat portion, and is mounted on the bottom of the seat portion and is proportional to the rotation angle of the backrest portion when the backrest portion is folded back. The seat back is moved forward, and when the pressing force is removed from the backrest provides a rotary chair, the backrest is folded, characterized in that it further comprises a driving means for moving the seat back to return the backrest.

This prevents the backrest portion from being folded back within a predetermined angle range with respect to the seat portion in a swivel chair having a hand rest, thereby preventing damage due to excessive load on the member supporting the leg portion against the seat portion. This reduces the cost of purchasing a new chair, and in the case of tilting the back of the chair, only the user's waist is stretched backwards within a predetermined angle along the back of the chair. It is possible to prevent the occurrence of occupational diseases by preventing the pain is applied to a specific site, and thereby has the advantage to increase the reliability of the product from the user.

Description

Swivel chair with folded back

The present invention relates to a revolving chair in which the backrest is folded, and more particularly, to a revolving chair in which the backrest is folded so that the backrest can be folded within a predetermined angle range with respect to the seat portion in the revolving chair having a hand rest. .

As shown in Fig. 1 and Fig. 2, the rotating chair according to the prior art has a seat portion 2 which is fixed and supported by a hand rest 1 formed on the left and right sides, and is integral with or relative to the seat portion 2; The backrest part 3 which is formed separately and is fixedly maintained by maintaining the predetermined angle integrally with the above-described seat part 2 by the above-described hand restraint 1, and integrally fixed to the bottom surface of the above-described seat part 2 The leg portion 6 is mounted to the bracket 5 and several wheels 4 are rotatably mounted, and the above-described back portion 3 is formed on the leg portion 6 within a predetermined angle range. It is configured to include a cushion member (7) that is cushioned when it is flipped back.

In the rotating chair according to the prior art formed as described above, the backrest part 3 and the seat part 2 described above are integrally formed by the above-described hand restraint 1 as shown in FIG. Therefore, when the above-mentioned backrest part 3 is flipped back, the above-mentioned backrest part 3 and the sheet | seat part 2 integrally rotate within the predetermined angle range.

Since the above described rotation angle of the backrest part 3 is extremely limited as described above, when the aforementioned backrest part 3 is forcibly pulled back, the above-mentioned cushion member 7 or the bracket 5 is weighted to prevent its damage. This causes the problem of having to pay a new cost to buy a new chair.

In addition, when the above-described backrest portion 3 is tilted back within a predetermined angle range, the front part of the seat portion 2 as described above is simultaneously raised upward in the drawing, so that the user's body is also supported by the backrest portion 3 described above. It moves while maintaining the same state as the angle formed by the seat portion (2). Because of this, if the people who work in the chair for a long time due to the nature of the job can not maintain the correct posture, you have to suffer a certain disease, especially the occupational disease causing pain in the lower back.

Therefore, an object of the present invention is to unduly weight the load on the intermediate member supporting the seat portion against the leg portion by folding the back portion within a predetermined angle range when the back portion is folded back in the rotary chair having a hand rest. It is to provide a swivel chair that is folded back to prevent the damage, thereby reducing the cost of purchasing a new chair.

Another object of the present invention, when the back of the chair is tilted back only the user's waist along the back is stretched back within a predetermined angle range when sitting in the chair for a long time to prevent the pain on the physical parts of the user to prevent occupational diseases It is to provide a swivel chair in which the backrest is folded to prevent the occurrence.

1 is a side view of a swivel chair according to the prior art,

Figure 2 is a state of use of the rotary chair according to the prior art,

Figure 3 is a side view of the rotary chair is folded back according to an embodiment of the present invention,

Figure 4 is a state of use of the rotary chair is folded back according to an embodiment of the present invention,

Figure 5 is an excerpt perspective view of the main portion of the rotary chair is folded back according to an embodiment of the present invention,

Figure 6 is a bottom view of the rotary chair is folded back according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Hand rest

2: Seat

3: backrest

4: wheels

5: bracket

6: leg

8: supporting member

9: fixed pin

10: bracket

11: case

12: stripper

13: elastic member

An object of the present invention described above, in the rotary chair folding the backrest is mounted on both sides of the hand rest, the support member formed on the bottom of the hand rest, and the seat portion seated to be movable in the front and rear direction on the support member And a backrest part fixedly rotatably to the hand rest and formed to be foldable within a predetermined angle range with respect to the seat part, and mounted on the bottom of the seat part and tilting the backrest part at an angle of rotation of the backrest part. Providing the rotary chair is folded backrest, characterized in that it further comprises a drive means for moving the seat portion forward in proportion, and when the pressing force is removed from the backrest portion to move the seat portion back to return the backrest portion. Is achieved.

Preferably, the driving means is a bracket which is integrally mounted at a predetermined position of the seat bottom surface, a case which is integrally formed on the bracket, and is installed to move in the front-rear direction to the case, and one end of the support member. A stopper for preventing the protrusion from protruding forward of the seat portion, and an elastic bias of the stopper with respect to the support member to an initial state between the bottom surface of the case and the other end of the stopper. And a resilient member for moving the seat back to return the backrest to an initial state when removing the pressing force rotated therefrom.

Preferably, the driving means may be formed on the left and right sides of the sheet bottom surface.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, whereby the technical scope of the present invention is not limited.

Figure 3 is a side view of the rotary chair is folded back according to an embodiment of the present invention, Figure 4 is a state of use of the rotary chair is folded back according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention The main portion of the revolving chair is folded backrest perspective view, Figure 6 is a bottom view of the rotary chair is folded back according to an embodiment of the present invention.

As shown in Figure 3 and 6, the leg support (6) fixed to the hand rest (1) mounted on the left and right sides of the chair, and the bracket (5) mounted on the bottom of the seat portion (2) supporting the chair The description of the present invention is the same as that shown in FIG. 1 and FIG. 2, and thus the detailed description thereof will be omitted, and the same reference numerals will be used.

Therefore, according to a preferred embodiment of the present invention, the support member 8 is fixed so that the seat 2 is seated so as to be movable in the front-rear direction between the left and right hand rests 1 described above. The backrest 3 formed on the pedestal 1 to correspond to the curvature of the human body is rotatably hinged to the aforementioned seat portion 2 by a fixing pin 9 in a predetermined angle range. The above-mentioned backrest part 3 is foldably hinged within a predetermined angle range by the connecting means not shown with respect to the above-mentioned seat part 2.

The bracket 10 is integrally formed on the left and right sides of the bottom of the seat part 2 as described above, and the cylindrical case 11 is integrally fixed to the bracket 10 facing the seat part 2 as described above. The case 11 has a piston-type stopper 12, one end of which is caught by the supporting member 8 and prevents the seat portion 2 from protruding forward against the user's intention, and the stopper 12 described above. Between the other end and the inner bottom surface of the case 11 described above, the one end of the stopper 12 described above is elastically biased to an initial state, and the back portion 3 is rotated. When the pressing force is removed, the elastic member 13 is installed to move the above-mentioned back to return the above-described backrest 3.

Referring to the use of the rotary chair folding the backrest according to the present invention formed as described above, as shown in Figures 4 and 5 described above, when the user backs the above-described backrest 3 (Fig. The backrest part 3 is rotated counterclockwise on the drawing about the above-mentioned fixing pin 9 as a center axis, and is thus folded within a predetermined angle range with respect to the backrest part 3 described above. The above-mentioned seat portion 2, which is possibly fixed, is moved in the right direction on the drawing in proportion to the rotation angle of the above-described backrest portion 3.

Therefore, when the above-described back portion 3 is rotated, the above-described back portion 3 is rotated while the above-described seat portion 2 maintains the initial horizontal state, and thus only the back of the user is within a predetermined angle range. You can rest backwards while flipping.

At this time, as the seat portion 2 is moved forward, the bracket 10 integrally fixed to the bottom of the seat portion 2 is also moved forward at the same time. Therefore, the elastic member 13 accommodated in the case 11 fixed to the bracket 10 described above is compressed (shown in FIG. 4).

On the other hand, the above-mentioned seat portion (by the restoring force of the elastic member 13 accommodated in the case 11 fixed to the bottom of the seat portion 2 described above when removing the pressing force to rotate the backrest portion 3 described above) As 2) is moved to the left in the drawing of FIG. 4, the backrest part 3 described above is moved to the right in the drawing of FIG. 4.

Since the bracket 10 integrally formed on the bottom surface of the seat part 2 is supported by the support member 8, the seat part 2 described above moves upward when the back support part 3 is rotated. This is to prevent the lifting, which is why only the user's back is flipped back when the backrest (3) is rotated.

In addition, the above-described bracket 10 is installed only on one side of the bottom of the seat portion 2 will belong to the technical scope of the present invention, the detailed configuration and operation thereof will be omitted.

As described above, according to the preferred embodiment, when the backrest part is tilted back in the swivel chair provided with the hand rest, the backrest part is folded within a predetermined angle range with respect to the seat part, and it is unreasonably loaded on the member supporting the leg part with respect to the seat part. This prevents damage due to the increased weight of the product, thereby reducing the cost of purchasing a new chair.

In addition, when the back of the chair is tilted back, only the user's waist is stretched backwards within a predetermined angle range along the back of the chair, and when sitting on the chair for a long time, it is possible to prevent the occurrence of occupational diseases by preventing pain on the user's physical part. This has the advantage of increasing the reliability of the product from the user.

Claims (3)

In the rotary chair folding the backrest mounted on both sides of the hand rest; A support member formed on the bottom of the hand rest; A seat part seated on the support member so as to be movable in the front and rear directions; A backrest fixed to the hand rest and rotatably formed within a predetermined angle range with respect to the seat; And The seat is mounted on the bottom portion of the seat and when the backrest is turned back, the seat portion is moved forward in proportion to the angle of rotation of the backrest portion, and when the pressing force is removed from the backrest portion, the seat portion is moved back to move the seat portion back. The back chair is folded, characterized in that it further comprises a means. According to claim 1, The drive means; A bracket integrally mounted at a predetermined position of the seat bottom surface; A case formed integrally with the bracket; A stopper installed on the case so as to move in a front and rear direction, and having one end caught by the support member to prevent the sheet from protruding forward; And It is installed to elastically bias the contact state of the stopper with respect to the support member to an initial state between the bottom surface of the case and the other end of the stopper, and moves the seat back when removing the pressing force rotated from the backrest part. Rotating chair is folded backrest characterized in that it comprises an elastic member for returning the backrest to the initial state. The rotary chair of claim 1, wherein the driving means is formed on the left and right sides of the seat bottom surface.