TWM643206U - Office chair lumbar support structure - Google Patents

Abstract

A lumbar support structure of an office chair is arranged on the back of the office chair and includes a first frame, a chute assembly and a lumbar support assembly. The chute assembly is composed of a chute piece and a first elastic element. The axial direction of the chute piece is parallel to a first direction. The chute piece is parallel to the first direction and has a chute. The first elastic element is arranged in the chute piece. The elastic direction of the second elastic element is parallel to the second direction; the waist rest protrudes from the back of the chair to provide a surface for the user to lie on.

Description

Office chair lumbar support structure

The invention relates to a lumbar support structure of an office chair, especially a lumbar support structure of an office chair that can provide elastic support to the user's waist.

There are many forms of office chairs. In addition to whether the height of the seat can be adjusted, whether the inclination angle of the seat back can be adjusted, and whether it has armrests, it can be divided into two types: with headrest and without headrest.

However, in the office chairs available on the market, there is no structure providing support for the user's waist. The user's waist cannot be supported, and after a long time of use, it is easy to cause the user's waist to be sore.

Therefore, the user usually arranges a cushion or a pillow between the back of the office chair and the human body as a lumbar support.

However, such back cushions and throw pillows tend to become elastically fatigued after long-term use and lose their support function. And this type of object can not provide adjustable function, so the comfort is still insufficient.

Accordingly, how to develop an "office chair waist support structure" that can provide elastic support to the user's waist is an urgent problem to be solved by people in the related technical field.

The author of this case has been specialized in the development and research of multi-functional office chairs for many years. He has a considerable understanding of whether various multi-functional office chairs can provide the most comfortable reclining for the human body. He conducts in-depth discussions on the aforementioned analysis and actively seeks solutions. The author of this case is in the spirit of excellence, continuous research and thinking, and finally completed the design of this creation after many tests and long-term efforts.

That is, the main purpose of this creation is to provide a lumbar support structure for an office chair, which can provide elastic support for the user's waist.

According to the above purpose, in a preferred embodiment, the lumbar support structure of the office chair described in this creation is set on the back of the office chair, which includes:

a first frame arranged on the back of the chair opposite to the reclining surface for the user to recline on;

At least one chute assembly is composed of a cylindrical chute piece and a first elastic element, the axial direction of the chute piece is parallel to a first direction, the chute piece is parallel to the first direction and has a chute, the first elastic element is arranged in the chute piece, and the elastic direction of the first elastic element is parallel to the first direction; the chute assembly is arranged on the first frame;

A lumbar support assembly is composed of a lumbar support piece and at least one second elastic element. The lumbar support piece is parallel to the first direction and has an opposite lumbar support portion and at least one sliding rod. The axial direction of the sliding rod is parallel to a second direction, and the second direction is perpendicular to the first direction. The assembly moves parallel to the first direction, and the sliding rod moves in the chute and compresses the first elastic element. When the external force is removed, the first elastic element can push the sliding rod, so that the lumbar support assembly moves parallel to the first direction, so that the lumbar support protrudes from the lying surface.

In another preferred embodiment, the end of the chute member facing the waist rest part has a cover body to seal the first elastic element in the chute member.

In another preferred embodiment, it has two symmetrically arranged chute components.

In another preferred embodiment, the chair back is provided with a hollow portion penetrating through the chair back parallel to the first direction, the lumbar support is provided corresponding to the hollow portion, and the lumbar support protrudes from the hollow portion to the chair back.

In another preferred embodiment, the first frame and the chute are made of plastic material.

In another preferred embodiment, the sliding rod is made of metal.

In another preferred embodiment, the lumbar support has a second frame, and the lumbar support is disposed in the second frame.

In another preferred embodiment, the second elastic element is arranged between the second frame and the chute

In another preferred embodiment, the sliding rod is disposed between two opposite side edges of the second frame parallel to the second direction.

In another preferred embodiment, the first elastic element and the second elastic element are springs.

The upper and lower side edges of the chute member parallel to the second direction are respectively provided with a chute

100: Office chair lumbar support structure

10: First frame

20: Chute assembly

21: Chute piece

211: Chute

212, 213, 314, 315: side edges

22: The first elastic element

23: cover body

30: Waist support component

31: Waist support

311: waist rest

312: Slide bar

313:Second frame

32: second elastic element

200: office chair

202: chair back

204: Hollow part

206: Rear side

208: Lying on the face

C1, C2: axis direction

F1: first direction

F2: the second direction

FO: external force

Fig. 1 is a schematic diagram of a combined three-dimensional structure of an embodiment of the present creation set on an office chair.

Fig. 2 is a schematic diagram of the rear side view of the embodiment of Fig. 1 .

Fig. 3 is a schematic cross-sectional structure diagram of the clamping member of the embodiment in Fig. 1 .

Fig. 4 is a schematic cross-sectional structure diagram of the first elastic element in the embodiment of Fig. 1 when it is in operation.

Fig. 5 is a schematic cross-sectional structure diagram of the second elastic element in the embodiment of Fig. 1 when it is in operation.

In order to have a more detailed understanding of the purpose, function, characteristics and structure of this creation, a preferred embodiment is hereby given and described in conjunction with the drawings as follows.

Please refer to FIG. 1 to FIG. 3 , an office chair lumbar support structure 100 provided by the present invention is arranged on the back 202 of the office chair 200 . In this embodiment, the chair back 202 is parallel to the first direction F1 with a hollow portion 204 penetrating through the chair back 202. The hollow portion 204 roughly corresponds to the waist position of the user. The office chair lumbar support structure 100 is disposed in the hollow portion 204, but it is not limited thereto.

The lumbar support structure 100 of an office chair includes a first frame 10 , a sliding channel assembly 20 and a lumbar support assembly 30 .

The first frame 10 is disposed on the rear side 206 of the seat back 202 . The first frame 10 can be integrally formed with the seat back 202 or be an independent body.

This embodiment has two chute assemblies 20 arranged symmetrically, and the chute assemblies 20 are arranged on the first frame 10 . The chute assembly 20 is composed of a cylindrical chute member 21 and a first elastic element 22 .

The axial direction C1 of the chute member 21 is parallel to the first direction F1 , and the chute member 21 has a chute 211 parallel to the first direction F1 . In this embodiment, the upper and lower side edges 212 , 213 of the chute member 21 parallel to the second direction F2 are respectively provided with a chute 211 . The second direction F2 is perpendicular to the first direction F1.

The first elastic element 22 is disposed in the sliding groove member 21 , and the elastic direction of the first elastic element 22 is parallel to the first direction F1.

The lumbar support assembly 30 is composed of a lumbar support member 31 and a second elastic element 32 .

The lumbar support 31 is disposed corresponding to the hollow portion 204 . The lumbar support 31 is parallel to the first direction F1 and has a lumbar support portion 311 and a sliding bar 312 opposite to each other. The lumbar support member 31 has a second frame 313 , and the lumbar support portion 311 is disposed in the second frame 313 . The second elastic element 32 is disposed between the second frame 313 and the chute member 21 .

The second elastic element 32 is disposed on the sliding rod 312, and the elastic direction of the second elastic element 32 is parallel to the second direction F2. The axial direction C2 of the sliding rod 312 is parallel to the second direction F2.

The sliding rod 312 passes through the slide slot 211 parallel to the second direction F2. The sliding rod 312 is disposed between two opposite side edges 314 , 315 of the second frame 313 parallel to the first direction F1 .

The lumbar support portion 311 protrudes from the reclining surface 208 of the seat back 202 through the hollow portion 204 .

An end of the sliding channel member 21 facing the waist support portion 311 has a cover body 23 to seal the first elastic element 22 and part of the sliding rod 312 in the sliding channel member 21 .

The materials of the first frame 10 , the second frame 313 , and the chute member 21 are not limited, for example, they may be made of plastic.

The material of the sliding rod 312 is not limited, for example, it can be made of metal.

The material and shape of the first elastic element 22 and the second elastic element 32 are not limited, for example, they may be metal springs.

4, when the lumbar support 311 receives an external force FO parallel to the first direction F1, it can push the lumbar support assembly 30 to move parallel to the first direction F1, and the sliding rod 312 moves in the chute 211 and compresses the first elastic member 22;

Please refer to FIG. 5 , the second elastic element 32 provides elastic force parallel to the second direction F2 to fine-tune the position of the lumbar support 311 , so that the lumbar support 311 is more in line with the waist position of the user.

To sum up, the lumbar support structure of the office chair provided by this creation is installed on the office chair with a specially designed elastic structure, which can provide elastic support for the user's waist, and can indeed greatly improve the comfort of the user when using the office chair.

Although this creation has been disclosed as above with the embodiment, it is not intended to limit this creation. Anyone with ordinary knowledge in the technical field may make some changes and modifications without departing from the spirit and scope of this creation. Therefore, the scope of protection of this creation shall be defined by the scope of the appended patent application.

100: Office chair lumbar support structure

10: First frame

20: Chute assembly

21: Chute piece

211: Chute

212, 213, 314, 315: side edges

22: The first elastic element

23: cover body

30: Waist support component

31: Waist support

311: waist rest

312: Slide bar

313:Second frame

32: second elastic element

206: Rear side

C1, C2: axis direction

F1: first direction

F2: the second direction

Claims (11)

A lumbar support structure for an office chair is provided on the back of the office chair, comprising: a first frame, arranged on the back of the chair relative to the reclining surface for the user to recline on; At least one chute assembly is composed of a cylindrical chute piece and a first elastic element, the axial direction of the chute piece is parallel to a first direction, the chute piece has at least one chute parallel to the first direction, the first elastic element is arranged in the chute piece, the elastic direction of the first elastic element is parallel to the first direction; the chute assembly is arranged on the first frame; A lumbar support assembly is composed of a lumbar support piece and at least one second elastic element. The lumbar support piece is parallel to the first direction and has an opposite lumbar support portion and at least one sliding rod. The axial direction of the sliding rod is parallel to a second direction, and the second direction is perpendicular to the first direction. When the part bears an external force parallel to the first direction, the lumbar support assembly can be pushed to move parallel to the first direction. The sliding rod moves in the chute and compresses the first elastic element. The lumbar support structure of an office chair according to claim 1, wherein the end of the chute facing the lumbar support has a cover to enclose the first elastic element in the chute. The lumbar support structure of an office chair as claimed in Claim 1 has two symmetrically arranged chute assemblies. The lumbar support structure of an office chair as claimed in item 1, wherein the chair back is parallel to the first direction and is provided with a hollow portion penetrating the chair back, the lumbar support is set corresponding to the hollow portion, and the lumbar support The part protrudes from the hollow part to the chair back. According to claim 1, the lumbar support structure of an office chair, wherein the first frame and the chute are made of plastic materials. The lumbar support structure of an office chair as claimed in claim 1, wherein the sliding rod is made of metal. The lumbar support structure of an office chair according to claim 1, wherein the lumbar support member has a second frame, and the lumbar support portion is disposed in the second frame. According to claim 7, the lumbar support structure of an office chair, wherein the second elastic element is arranged between the second frame and the sliding channel member. The lumbar support structure of an office chair according to claim 7, wherein the sliding rod is disposed between two opposite side edges of the second frame parallel to the second direction. According to claim 1, the lumbar support structure of an office chair, wherein the first elastic element and the second elastic element are springs. According to claim 1, the lumbar support structure of an office chair, wherein the upper and lower sides of the chute member parallel to the second direction are respectively provided with a chute.

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