KR200210297Y1 - A chair provided with an auxilliary back plate - Google Patents

Abstract

The present invention provides a chair having an auxiliary backrest that supports the lower back and the back while tilting up, down, left and right in accordance with the change of posture while sitting on a chair while working on a backrest.

Provided is a chair comprising a single or double elastic member elastically installed in the lower center of the backrest and an auxiliary backrest attached to the elastic member.

Description

A chair provided with an auxilliary back plate}

The present invention relates to a chair having an auxiliary backrest, and more particularly, to a chair provided with an auxiliary backrest which can be flipped up, down, left and right.

Conventionally, a chair in which one or two backrests are folded up, down, left and right by an elastic member is known (for example, Patent No. 89334). However, such a backrest is bent forward while sitting on a chair and working. Since the waist is not in contact with the back, the effect of supporting the waist or the back cannot be expected. Only when the back is leaned on the back, the effect can be exerted.

The present invention is conceived in consideration of the above problems of the conventional chair, while sitting on the chair while tilting up and down, left and right in accordance with the posture change while supporting the back and waist and at the same time up and down, left and right An object of the present invention is to provide a chair having an auxiliary backrest for supporting a back and waist while moving.

A chair equipped with an auxiliary backrest of the present invention is supported by the backrest in contact with the waist and its surroundings and tilted along the movement of the waist while the user is sitting on the chair while bending and working. In the case of the double elastic member, even when the first elastic member is bent backward and fixed, the second elastic member is tilted up and down, left and right according to the movement of the back and comfortably supports the waist and the back.

1a, 1b is a perspective view and a cross-sectional view of a chair of one embodiment of the present invention,

2 is a partial partial perspective view of a chair of another embodiment of the present invention;

3 is a partial side cross-sectional view of the chair of FIG.

Figure 4 is a partial side cross-sectional view showing the movement of the auxiliary back of the chair of Figure 2,

5a to 5c is a plan view showing the movement of the auxiliary back of the chair of Figure 2 is not folded,

6a to 6c is a plan view showing the movement of the auxiliary back of the chair of FIG.

7A and 7B are perspective and side views of another example of the elastic member used in the present invention.

<Explanation of symbols of main parts of drawing>

10: seat 20: backrest

30: auxiliary backrest 40: auxiliary backrest elastic support

50: first elastic member 60: second elastic member

In order to achieve the above object, the present invention provides a chair including a single or double elastic member elastically installed in the lower center of the front of the backrest and the auxiliary backrest attached to the elastic member.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing the embodiments.

1A is a perspective view of one embodiment of the present invention, and FIG. 1B is a sectional view of FIG. 1A.

In Figure 1a, Figure 1b, the chair of the present invention is the seat plate 10, the backrest 20, the auxiliary backrest 30 and the auxiliary backrest elastic support portion 40 installed in the space 21 formed in the lower center of the front of the backrest It is configured to include). The auxiliary back elastic support 40 may use a variety of different elastic members, Figure 1a, Figure 1b is an example using the same as the elastic member 61 of FIG.

In FIGS. 1A and 1B, the auxiliary backrest 30 protrudes slightly forward than the backrest 20 and is composed of a metal skeleton portion 31, an elastic material 32, and a forge cover 33.

Chair according to the embodiment of the present invention configured as described above is the auxiliary backrest 30 protruding forward and elastically support the back and the back of the person sitting on the chair, the user can work with a sense of stability and the user Even if there is a change in posture, the function of the auxiliary backrest 30 is exerted the same.

2 is a partial exploded perspective view of a chair of another embodiment of the present invention, and FIGS. 2 and 3 are partial side cross-sectional views of the chair of FIG. 2.

In FIG. 2, the chair of the present invention includes a seat plate 10, a backrest 20, an auxiliary backrest 30, and an auxiliary backrest elastic support 40. The auxiliary backrest elastic support part 40 is located in the space part 21 formed in the lower center of the backrest 20, and is elastically installed by the hinge 51 and the coil spring 52 fixed to the frame to the backrest and the lever ( 53, and a second elastic member 60 attached to the front surface of the lever 53 and having an auxiliary back 30.

The auxiliary backrest 30 is composed of a plate body 34 and a cushioning material 35 protruding slightly forward than the backrest 20 and attached to the lever 53 of the first elastic member 50, and the second elastic member 60. ) Is approximately the center of the body 61 and the support portions (62, 62 ') on both sides It is formed so as to be shaped and attached to the lever 53 by bolts 63, and supports the auxiliary back 30 made of the plate body 34 and the cushioning material 35 by bolts 64 and 64 '.

A long hole 53 'is drilled in the lever 53 of the first elastic member 50, so that the second elastic member 60 can be installed in an upside down position (see FIG. 2), and the bolt as the stopper 54 It is fixed to both sides of the lower end, the stopper 54 may be formed by extending the lower end of the lever 53 horizontally.

The auxiliary backrest 30 of the chair of the above embodiment of the present invention configured as described above supports the user's back and surrounding back when the user is sitting on the seat plate 10 of the chair to provide comfort to the user and reduce fatigue. Moves up, down, left and right as the movement continues to support the user's back and back (see Figure 3). In addition, when the user leans back, the lever 53 is pivoted back by the hinge 51 to be turned back to stop. Thus, the lever 53, that is, the first elastic member 50 is flipped backward, In a fixed state, the second elastic member 60 may move up, down, left, and right according to the user's movement and maintain the close contact with the user's waist and back (see FIG. 4).

The dashed-dotted line in FIG. 3 shows a state in which the auxiliary backrest 30 is folded up, and the dashed-dotted line in FIG. 4 shows a state in which the back of the user is in close contact with the backrest 20 and the auxiliary backrest 30.

5A to 5C show a state in which the auxiliary backrest 30 is turned to the front, to the left, or to the right when the backrest 30 is not turned back.

6A to 6C show a state in which the auxiliary back 30 is turned to the front or to the left or the right when the backrest 30 is flipped backward.

7A and 7B illustrate another example of the second elastic member 60 used in the chair of FIG. 2, wherein the tubular elastic portion 66 is formed to have an elasticity, and the auxiliary backrest attachment portion 67 on the front surface thereof is formed. And a first elastic member connecting portion 68 on the rear surface.

7A and 7B, the second elastic member 60 may be used as the first elastic member as well as the auxiliary backrest elastic support part 40 of the embodiment of FIG. 1. In the former case, the auxiliary backrest attaching part 67 ), The second elastic member attachment portion, the first elastic member connection portion 68 will be the backrest connection portion.

As described above, the elastic member of the present invention may use various kinds. For example, in the elastic member of FIGS. 7A and 7B, the tubular elastic portion 66 may have a wrinkled waist or a hollow waist without a hollow portion. It is also possible to use a combination of a spring coil, a tubular tube and a coil spring.

The auxiliary backrest 30 used in the present invention is not limited to its shape and material if it can support the waist and back, and is not limited to the elastic body or cushioning material.

Although the present invention has been described by way of example by way of example, the present invention is not limited to the above embodiment, and various modifications and variations are possible within the scope of the technical idea of the present invention.

According to the present invention, the user can comfortably support his / her back and the back of the body, regardless of the user's posture, such as sitting with his back bent or sitting, or even sitting with his back. It is effective.

Claims (10)

In the chair having a seat plate 10 and the backrest 20, the backrest 30 and the backrest 30 for supporting the back of the user and the back of the user are placed on the lower part of the front lower part of the backrest 20. A chair having an auxiliary backrest, characterized in that it comprises an auxiliary backrest elastic support part 40 for elastically tilting left and right. The chair having a backrest according to claim 1, characterized in that a space part (21) for installing the auxiliary backrest elastic support part (40) is formed on the backrest (20). According to claim 1 or claim 2, wherein the auxiliary backrest elastic support portion 40 of the body 61 of the central portion fixed to the backrest 20 and the mother 61 fixed to the auxiliary backrest 30 Support 62,62 'is approximately A chair equipped with a backrest, characterized in that formed to form a mold. According to claim 1 or claim 2, wherein the auxiliary backrest elastic support portion 40 is characterized in that the auxiliary backrest attachment portion 67 of one side, the central elastic portion 66 and the other backrest connection portion 68 is formed. A chair provided with an auxiliary back. According to claim 1 or 2, wherein the auxiliary back elastic support portion 40 is spring nose A chair equipped with an auxiliary back, characterized in that the combination of one or a tubular tube and a coil spring. According to claim 1 or 2, characterized in that the auxiliary backrest elastic support portion (40) is formed of the first elastic member (50) and the second elastic member (60), the chair with an auxiliary backrest. According to claim 6, The first elastic member 50 is a hinge 51 is fixed to the backrest 20 and the lever is elastically installed by the coil spring 52 to be rotated by the hinge ( 53, the second elastic member 60 includes an auxiliary back support attaching portion 67 on one side, a back support connecting portion 68 fixed to the lever 53 and a central elastic portion 66. A chair having an auxiliary backrest, characterized in that formed in). According to claim 6, The first elastic member 50 is a hinge 51 is fixed to the backrest 20 and the lever is elastically installed by the coil spring 52 to be rotated by the hinge ( 53, wherein the second elastic member 60 includes a body 61 fixed to the lever 53 and support portions on both sides of the body 61 coupled to the auxiliary back 30. 62,62 ') is approximately A chair equipped with a backrest, characterized in that formed to form a mold. According to claim 6, wherein the first elastic member 50 is the support portion of the body 61 of the central portion fixed to the backrest 20, the body 61 is coupled to the second elastic member 60 ( 62,62 ') is approximately It is formed to form, the second elastic member 60 is characterized in that formed with the first elastic member connecting portion 68 of one side, the elastic portion 67 of the center and the auxiliary back attachment portion 67 of the other side , Chair with backrest. The method of claim 6, wherein the first elastic member 50 is one back connection portion 67 fixed to the backrest 20, the central elastic portion 66, and the second elastic member attachment portion ( 67, wherein the second elastic member 60 is formed on both sides of the body 61 to which the center 61 fixed to the second elastic member coupling part 66 and the auxiliary backrest 60 are coupled. Support 62,62 'is approximately A chair equipped with a backrest, characterized in that formed to form a mold.