KR20060132427A - The device for supporting the lumbar vertebra - Google Patents

Abstract

A device for supporting a lumbar vertebra of a chair backrest is provided to support the user's lumbar vertebra effectively with optimum pressure and to reduce burden on the user's waist by forming a lumbar vertebra support. The device for supporting a lumbar vertebra of a chair backrest includes a backrest cushion(1), a frame(2), an auxiliary frame(3) and one or more lumbar vertebra supports. A lumbar vertebra support insertion portion(11) is formed in the backrest cushion(1). In the center of the auxiliary frame(3), a lumbar vertebra insertion hole(31) is formed. The lumbar vertebra support includes a cushion(41), an insertion rod(42) and one or more compressed coil springs(43). The insertion rod(42) extending toward the rear of the cushion(41) is inserted into the lumbar vertebra support insertion hole(31).

Description

Chair back lumbar support device {The device for supporting the lumbar vertebra}

1 is a perspective view according to an embodiment of the present invention

2 is a state diagram used in accordance with an embodiment of the present invention

3 is an exploded perspective view according to an embodiment of the present invention;

Figure 4 is a partially exploded perspective view according to an embodiment of the present invention

<Explanation of symbols for main parts of the drawings>

1: Back cushion

     11: lumbar support insert

2: frame

     21: vertical rod 22: bending rod

3: auxiliary frame

     31: lumbar support insert 32: coupling hook

     33: auxiliary rod

4: lumbar support

     41: cushion 42: insertion rod

     42 ': screw hole 43: compression coil spring

     44: adjusting knob 44 ': insertion axis

     46: spring mounting portion 46 ': spring insertion hole

     47: second spring mounting portion

5: chair body

The present invention relates to a chair back lumbar support device, which will be described in more detail in the back of the chair, the back portion of the lower back, that is, a certain width protruding from the lumbar region, so that the elastic support so that when sitting on the chair and always press the lumbar region with a certain force It relates to a chair back device invented to reduce the burden on the lumbar spine.

The time spent on the chairs by students or office workers in the day accounts for almost half of the day, while others spend less than a few hours on the chairs. have. Therefore, the habit of sitting in the correct posture is recognized as essential to protect the spine or lumbar region, especially due to the work in the chair for a long time. In addition, in the manufacture of such a sofa and various chairs are trying to improve the design to minimize the burden of the spine and lumbar ergonomics. However, most of the ergonomic chairs are designed to support the lumbar spine or upper lumbar spine by protruding and refracting the lower back. It is getting a lot of response for the youth, but the spread of these chairs is not well done in each workplace. This is due to the fact that most of the social workers represented by the office workers do various tasks at their desks, and because they are tired of repeated work, the most common and often different postures are inclined backwards rather than straight to the ground. do. Therefore, chairs that are currently being distributed to society members are most commonly used chairs with enhanced cushioning functions. However, in the case of a chair with enhanced cushion function, only the cushion function for comfort is enhanced, and when the user is sitting in an incorrect posture, the spine is very unstablely bent, so this bad habit may be prolonged. In some cases, the spine may bend or severe pain may occur in the lumbar region. In particular, the abnormalities of the lumbar region cause more severe pain than anywhere else, and the treatment period is long and not easy to cure.

In addition, some of the chairs that are widely distributed in the country is a chair with a protruding cushion in the lumbar region, but does not consider the user's body shape or posture by functioning as a simple protruding cushion, the effect is insignificant.

The present invention was developed to solve the above problems, the object is to provide a chair that can minimize the burden of the waist to effectively support the lumbar spine.

In addition, the user to provide a chair that can easily adjust the degree of protrusion of the lumbar support.

In addition, the lumbar support maintains good elasticity even under pressure in various directions to support the lumbar region at a constant pressure.

In order to achieve the above object, the present invention provides a backrest cushion in which a lumbar support insert is formed at a portion supporting the lower lumbar spine;

A frame supporting the backrest cushion and connected to a chair body;

At least one auxiliary frame connected to the rear of the lumbar support insert in the frame, the lumbar support insert hole being formed at the center thereof;

A cushion inserted corresponding to the lumbar support insert, an insertion rod extending to the rear of the cushion to be inserted into the lumbar support insertion hole, and allowing the cushion and the auxiliary frame to elastically support a predetermined force around the insertion rod It relates to a chair back lumbar support device, characterized in that consisting of the lumbar support consisting of the above compression coil spring.

Accordingly, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a perspective view according to an embodiment of the present invention, Figure 2 is a state diagram used in accordance with an embodiment of the present invention, unlike the general back cushion (1) cushion 41 in the portion supporting the lower lumbar spine Protruding, the cushion 41 is to be retracted to the rear if the predetermined pressure or more by the compression coil spring (43). Therefore, by applying a constant pressure on the lumbar region according to the user's posture, it is possible to prevent the back pain or the deformation of the spine as much as possible by using the spine and the lumbar bend for a long time in a bent position when the chair is not normally placed. It becomes possible.

Figure 3 is an exploded perspective view according to an embodiment of the present invention, when explaining the structure of the present invention in more detail the lumbar support insert (11) is formed in the portion supporting the lower lumbar spine (1); A frame (2) supporting the back cushion (1) and connected to a chair main body (5); At least one auxiliary frame (3) connected to the rear of the lumbar support insert (11) in the frame (2), the lumbar support insert hole (31) formed at the center thereof; A cushion 41 inserted corresponding to the lumbar support insert 11, an insertion rod 42 extending rearward of the cushion 41 and inserted into the lumbar support insertion hole 31, and the insertion rod It is composed of a lumbar support composed of one or more compression coil springs 43 so that the cushion 41 and the auxiliary frame 3 are elastically supported with a constant force around the perimeter of the 42.

4 is a partially exploded perspective view according to an embodiment of the present invention, in order to adjust the degree of protrusion of the cushion 41, a screw hole 42 'is formed at the end of the insertion rod 42 and the lumbar support Protrusion of the cushion 41 in accordance with the degree of engagement by the adjustment knob 44 is coupled to the front of the insertion hole 31 and the insertion shaft 44 'is formed in the rear corresponding to the screw hole 42' The degree can be easily adjusted by the user.

Therefore, when uniformly produced, the degree of protrusion of the lumbar support is different according to the person, so that the position of the person is uncomfortable and the effect of the effect is insufficient. It was possible to adjust. In addition, three or more spring mounting portions 46 are formed to protrude forward at a predetermined interval about the lumbar support insertion hole 31 of the auxiliary frame 3 and have a spring insertion hole 46 'formed at the center thereof. A second spring mounting portion 47 having the same structure is formed at the rear of the cushion 41 corresponding to the spring mounting portion 46, so that both ends of the compression coil spring 43 are inserted. This configuration is to maintain an effective elastic force even in the lateral force by the compression coil spring 43 formed radially and also to maintain a stable elastic force by a number of springs.

In addition, the frame 2 is composed of two bilateral vertical rods 21 and bending rods 22 that are bent in a semicircle connected to the lower ends of the vertical rods 21, but the bending rods 22 have a predetermined angle to the rear. It is connected inclined, and the connecting rods adjacent to both sides of the vertical bar (21) and the bending bar (22) adjacent to each other are formed in the center to form an auxiliary rod (33) to the upper portion; The auxiliary frame (3) extends in the lateral direction and the upper direction, respectively, symmetrical about the lumbar support insertion hole (31) and at its ends, respectively, the lower side of the bending rod (22) and the upper part of the auxiliary rod (33). The coupling hook 32 is formed to be coupled with the shown further structure.

The structure of the frame 2 is illustrated according to the product produced by the present inventors, and the present invention is not limited to the structure of the praim, which can be said to be one of various various embodiments.

As described above, in the present invention, the lumbar support protruding from the lumbar region is formed to support the lumbar spine, but the back and forth can be supported by a predetermined pressure to effectively support the lumbar spine at an optimum pressure of the user, thereby reducing the burden on the waist. have.

In addition, the user can easily adjust the degree of protrusion of the lumbar support has an effect that can be adjusted in various ways depending on the user's body shape and posture or taste.

In addition, the lumbar support maintains good elasticity even under pressure in various directions, thereby providing comfort to the user and increasing durability.

Claims (4)

A backrest cushion 1 having a lumbar support insert 11 formed at a portion supporting the lower lumbar spine; A frame (2) supporting the back cushion (1) and connected to a chair main body (5); At least one auxiliary frame (3) connected to the rear of the lumbar support insert (11) in the frame (2), the lumbar support insert hole (31) formed at the center thereof; A cushion 41 inserted corresponding to the lumbar support insert 11, an insertion rod 42 extending rearward of the cushion 41 and inserted into the lumbar support insertion hole 31, and the insertion rod Chair backrest, characterized in that the backrest consisting of a lumbar support consisting of one or more compression coil spring (43) for elastically supporting the cushion 41 and the auxiliary frame (3) to the periphery of (42). The screw rod 42 'is formed at the end of the insertion rod 42, and is coupled to the front of the lumbar support insertion hole 31 and coupled to the screw hole 42' at the rear. Chair backrest lumbar support device, characterized in that the coupling depth is adjusted by the adjustment knob (44) that the insertion shaft (44 ') is formed. 3 or more springs according to claim 1 or 2, wherein the lumbar support insertion hole 31 of the auxiliary frame 3 protrudes forward at a predetermined interval and a spring insertion hole 46 'is formed at the center thereof. The mounting portion 46 is formed, and the second spring mounting portion 47 having the same structure is formed at the rear of the cushion 41 corresponding to the spring mounting portion 46 so that both ends of the compression coil spring 43 are inserted. Chair back lumbar support device characterized in that. The method of claim 1 or 2, wherein the frame (2) consists of two bilateral vertical rods (21) and a bending rod (22) bent in a semicircle connected to the lower end of the vertical rods (21) The bending rod 22 is inclined at a predetermined angle to the rear, and connects the vertical rod 21 and the adjacent portions of both sides of the bending rod 22 to each other, but has an auxiliary rod forming a circular arc at the top thereof ( 33) is formed; The auxiliary frame (3) extends in the lateral direction and the upper direction, respectively, symmetrical about the lumbar support insertion hole (31) and at its ends, respectively, the lower side of the bending rod (22) and the upper part of the auxiliary rod (33). Chair backrest lumbar support device characterized in that the coupling hook 32 is formed to be coupled to.

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