KR200406935Y1 - A chair with a split back - Google Patents

Abstract

The present invention is characterized in that the chair having a backrest on the front lower side of the backrest is formed by dividing the waistrest symmetrically, according to the present invention, the waist of the seated occupant by two symmetrical backrests The stable and balanced support on both sides ensures that the seater's posture is correct and comfortable even when sitting on the chair for long periods of time, as well as the chair with the backrest from the manufacturer or seller to the store or from the store to the consumer. When transporting or when the user does not want to use the backrest, the backrest can be easily removed from the chair, the user can easily assemble the backrest to the user's physical characteristics, and can be assembled. Can be supported elastically in the front and rear direction, There is a coming effect.

Chair, waist

Description

CHAIR WITH DUO WAIST RESTS}

1 is a perspective view of a chair having a bipartite backrest according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the waist rest of the chair having the two-split waist rest shown in FIG.

FIG. 3A is an exploded perspective view showing the waist rest of the chair having the two-part waist rest shown in FIG. 1 separated by the waist rest and the bracket; FIG.

3B is an assembled perspective view of the waist rest shown in FIG. 3A.

Figure 4a is an exploded perspective view showing the backrest of the chair having a two-part waistband according to another embodiment of the present invention separated by the waistband and the bracket.

Figure 4b is an assembled perspective view of the waist rest shown in Figure 4a.

            Explanation of symbols on the main parts of the drawings

10: chair 11a, 11b: backrest

12: connecting rod 13: back frame

14 coupling hole 15 seat plate

20: waist support 21a, 21b: waist support

22, 24: bracket 22a, 24a: bonding plate

22b, 24b: remnant air 22c, 24c: support

22d: waist connection part 22e, 22f: coupling hole

23a, 23b: bolt 24d: movable plate

24e: fixing plate 24f: spring

The present invention relates to a chair having a backrest, and more particularly, to a chair having a backrest protruding to support the waist of a seated person at the front lower side of the chair back.

Conventionally, the backrest composed of a backrest and a bracket that couples the backrest to the seat frame or the backrest frame of the chair has been employed in the chair, and the waist rest is supported by the seat of the seat for a long time. In addition to relieving back pain caused by sitting at work, it also serves to correct the posture of the seated person.

In order to stably support the waist to perform the above-described functions, the waistrest should be a structure capable of supporting the waist symmetrically on both sides about the spine. In addition, the backrest should support the back muscles on both sides of the spine in a balanced manner rather than directly pressing the spine of the center so that the seated person's posture is stable and comfortable even when sitting for a long time.

However, the conventional waist support uses a single integrated waist support, and the entire waist support can be pulled to one side even when a slight force is applied, so that the support supports only one side of the waist or the waist support is the spine. There was a problem of directly pressing the site. For this reason, when the seated person is seated on the chair, it is difficult to feel the waist supported symmetrically on both sides of the spine.

In addition, a chair having a waist back is conventionally welded and fixed to the seat frame with a bracket of the waist rest, or the waist rest inside the back cushion, even when it is necessary to remove the waist when carrying the chair or while using the chair. It could not be separated by the carrier or the user. This limits the chair load of the transport vehicle when carrying the chair, and there is a problem of restricting the use of the waist according to the user's selection.

The present invention devised to improve the shortcomings of the above-mentioned chair having a lower back is stable and balanced on both sides of the seat of the seat so that the seat of the seat can be corrected and comfortable even when sitting on the chair for a long time. The object is to provide a chair with a two-split waist.

Another object of the present invention is to easily remove the backrest from the chair when the manufacturer or seller carries the backrest chair from the factory to the store or from the store to the consumer, or if the user does not want to use the backrest. It is to provide a chair having a bipartite waist of a structure that can be transported or used.

Another object of the present invention is to provide a chair having a bipartite waist of the structure that can be easily assembled by the user to adjust the height of the backrest to the body characteristics of the chair user.

Still another object of the present invention is to provide a chair having a bipartite backrest having a structure capable of elastically supporting the back of the chair user in the front-back direction.

The present invention to achieve the above object

A chair having a lower back in the front lower side of the backrest, wherein the lower back is symmetrically divided and formed.

The chair has two divided backrests, a backrest frame coupling the two backrests to each other, one end of which is fastened to the backrest frame by a detachable bolt and a detachable nut, and the other end is connected to a seat plate lower frame to vertically support the backrest. And a connecting rod supporting in the direction, and the waistrest is attached to one end of the bracket, and the other end of the bracket is detachably coupled with the backrest frame to the tip of the connecting rod by the detachable bolt and the detachable nut. It is preferable.

In addition, it is preferable that the other end of the bracket is provided with a coupling plate formed with rectangular remnants so that the height of the waist can be adjusted when engaging the backrest frame.

In addition, at one end of the bracket, a movable plate for coupling the divided backrest in the rear, a fixed plate disposed to be in contact with the movable plate and the lower end, and the upper plate and the movable plate and the fault plate between the movable plate and the fixed plate. At the same time it is preferable to have a spring to allow the movable plate to rotate in a forward and backward direction about its lower end to enable the waistrest to elastically support the waist.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the chair having a two-part backrest according to the present invention.

1 is a perspective view of a chair having a two-split waist, according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a separate back of the chair having a two-split waist shown in Figure 1, 3A is an exploded perspective view showing the waist rest of the chair having the two-split waist rest shown in FIG. 1 separated by the waist rest and the bracket, and FIG. 3B is an assembly perspective view of the waist rest shown in FIG. 4B is an exploded perspective view showing the waist rest of the chair having a two-part waist rest according to another embodiment of the present invention separated by the waist rest and the bracket, and FIG. 4B shows an assembly perspective view of the waist rest shown in FIG. 4A, respectively.

1 and 2 exemplarily show a case in which the backrests 11a and 11b are provided with two-split waists 21a and 21b in two so-called duo-back chairs, according to the present invention. The two-split waistrest can also be applied to integrated backrest chairs.

1 and 2, the duo-back chair includes two divided backrests 11a and 11b, a backrest frame 13 which couples the two backrests 11a and 11b to each other, and one end of the backrest frame ( 13 is fastened by the detachable bolt 30 and the detachable nut 31 and the other end is connected to the lower frame of the seat plate 15 to be composed of a connecting table 12 supporting the backrests 11a and 11b in the vertical direction. Can be.

As shown in FIG. 1 or FIG. 2, a feature of the present invention is that the backrests 21a and 21b are provided on the front lower side of the backrests 11a and 11b of the chair, and stably support both sides of the waist around the spine. The waistrests 21a and 21b are formed to be symmetrically divided so as to be able to do so. By this configuration, the waist of the seated person is stable and balanced on both sides, so that the seated person's posture is correct and comfortable even when sitting in a chair for a long time. Another feature of the present invention is the backrest frame 20 is attached to the back of the backrest connecting rod 12 using the detachable bolt 30 and the detachable nut 31 attached to the lower backrest (21a, 21b) And (13) are detachably fastened. With this arrangement, the chair with two-split waist is easily separated from the chair when the manufacturer or seller carries it from the factory to the store or from the store to the consumer, or when the user does not want to use the waist. To be transported or used.

3A and 3B, as described above, the waistrests 21a and 21b are combined with the bracket 22 to form the waistrest 20, and the waistrest 20 is the backrest frame of the chair. Removably fastened to (13). The bracket 22 of the waist rest 20 has a waist rest 22d for coupling two waist rests 21a and 21b to a predetermined distance, and the waist rest 21a and 21b to the connection table 12. A support 22c supporting downward from the coupling hole 14 of the backrest frame 13 and a coupling plate 22a for fixing the support 22c to the front end of the connecting table 12 and the backrest frame 13. It is composed. Coupling holes 22f are formed in the lower back connecting portion 22d to couple to the lower back 21a, 21b and are fastened to the lower back 21a, 21b by bolts 23a, 23b. It is preferable that a rectangular residual hole 22b into which the detachable bolt 30 is inserted is formed in the coupling plate 22a. When fastening the lumbar support 20 together with the backrest frame 13 by the detachable bolt 30 and the detachable nut 31 at the end of the connecting table 12, the remaining holes 22b and the coupling holes 14 are aligned. In this state, the waist support 20 is pushed upward or pushed downward in the state where the detachment bolt 30 is inserted, and then the height is set to tighten the detachment bolt 30 and the detachment nut 31. If so, it is possible to adjust the fixed height of the lumbar support 20 according to the user's physical condition.

4A and 4B, at one end of the bracket 22, a movable plate 24d for coupling the divided backrests 21a and 21b from the rear, and the movable plate 24d and a lower end are in contact with each other. The movable plate 24d and the fault plate 24e are coupled between the fixed plate 24e and the movable plate 24d and the fixed plate 24e, and the movable plate 24d is centered at the lower end thereof. By having a spring (24f) to be elastically rotated in the front and rear direction, the waistrest (21a, 21b) can be made to support the waist elastically. That is, the fixing plate 24e is attached to the front end of the backrest side of the support 24c, and the movable plate 24d is provided on the back of the backrests 21a and 21b, and the fixing plate 24e and the movable plate 24d are provided. By interposing the spring 24f therebetween, the backrests 21a and 21b can be configured to elastically rotate in the front-rear direction when seated. Although omitted in FIGS. 4A and 4B, the coupling between the movable plate 24d and the backrests 21a and 21b may use bolts and nuts or adhesives. Also in this case, when the rectangular receptacle 24b is formed in the coupling plate 24a, the waist 20 is adapted to fit the user's physical condition when the waist rest 20 is fastened to the connecting rod 12 and the back support frame 13. The height of the pedestal 20 can be adjusted in the vertical direction.

According to the present invention having the above-described configuration, the two symmetrical backrests support the seater's waist on both sides stably and stably so that the seater's posture can be corrected and comfortable even when sitting on the chair for a long time. In addition, the backrest can be easily removed from the chair when the manufacturer or seller carries the backrest chair from the factory to the store or from the store to the consumer, or if the user does not want to use the backrest. The height of the backrest can be easily adjusted and assembled by the user's body characteristics, and the chair user's back can be elastically supported in the front and rear directions, thereby bringing a stable seating effect.

Claims (4)

In the chair 10 provided with the lower back 21a, 21b in the lower front of backrest 11a, 11b, The backrest (21a, 21b) is a chair having a bipartite backrest, characterized in that formed in symmetrically divided. The method of claim 1, The chair 10 includes two divided backrests 11a and 11b, a backrest frame 13 which couples the two backrests 11a and 11b to each other, and one end of the backrest frame 13 to a removable bolt. 30 and the other end is fastened by a removable nut 31 and the other end is provided with a connecting table 12 connected to the lower frame of the seat plate 15 to support the backrests 11a and 11b in the vertical direction, The backrests 21a and 21b are attached to one end of the bracket 22, and the other end of the bracket 22 is the front end of the connecting table 12 by the detachable bolt 30 and the detachable nut 31. Chair having a two-part backrest, characterized in that detachably coupled with the backrest frame (13). The method of claim 2, The other end of the bracket 22 is provided with coupling plates 22a and 24a having rectangular holes 22b and 24b formed therein, so that the height of the waist can be adjusted when coupled to the backrest frame 13. Chair with split backrest. The method of claim 2 or 3, On one end of the bracket 22, a movable plate 24d for coupling the divided backrests 21a and 21b from the rear, and a fixed plate 24e arranged to contact the movable plate 24d and the lower end and to open the upper part. And the movable plate 24d and the failing plate 24e between the movable plate 24d and the fixed plate 24e, and at the same time, the movable plate 24d rotates elastically in the front-rear direction about its lower end. A chair having a bipartite backrest, characterized in that the backrest (21a, 21b) is provided with a spring (24f) to elastically support the waist.

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