Backrest

Abstract

The utility model discloses a backrest which comprises a back frame, a waist leaning frame is arranged on the lower portion of the back frame, the back frame comprises an upper cross beam, a lower cross beam, a left supporting rod and a right supporting rod, and the lower portion of the left supporting rod and the lower portion of the right supporting rod are respectively provided with a first bending portion which is bent downwards. The lower portion of the left supporting rod and the lower portion of the right supporting rod are each provided with a second bent part which is bent upwards, and a groove which extends up and down is formed between the first bent part and the second bent part. The back frame is simple in structure and stable in structure, after the backrest forms a double-bending modeling structure and a double-bending waist support and is covered with the net cloth, a double-layer waist jacking effect is formed when a user leans against the back frame, the waist of the user can be supported and jacked up, the waist and the back of the user can be supported and attached by the backrest, the waist supporting effect is good, and the user can feel comfortable. The use comfort of the backrest is improved, and the consumer experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a backrest. Background Art

[0002] A chair is a piece of furniture for daily life, and is a kind of sitting furniture including a seat, a backrest, armrests, etc. The backrest is an important component of the chair, and its main function is to support the back. However, the existing backrest does not fit the waist well enough, and the supporting effect on the waist is not good, which affects the comfort of the backrest. If the strength of the waist support provided is not enough or the position of the waist support is incorrect, the user may feel uncomfortable, resulting in lack of concentration, fatigue, poor posture, and even chronic waist injury. Therefore, in order to avoid the shortcomings of the prior art, it is necessary to improve the prior art. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies in the prior art and to provide a backrest with a simple structure and comfortable use.

[0004] The utility model is realized by the following technical solutions:

[0005] A backrest comprises a back frame, wherein a lumbar support frame is provided at the lower portion of the back frame, the back frame comprises an upper crossbeam, a lower crossbeam, a left support rod and a right support rod, wherein the lower portions of the left support rod and the right support rod are both provided with a first curved portion curved downward, and the lower portions of the left support rod and the right support rod are both provided with a second curved portion curved upward, wherein a groove extending upward and downward is formed between the first curved portion and the second curved portion.

[0006] Furthermore, a waist support is provided on the inner side of the lower part of the back frame.

[0007] Furthermore, the middle of the lumbar support is bent backwards.

[0008] Furthermore, the upper crossbeam, the lower crossbeam, the left support rod, the right support rod and the lumbar support are integrally injection molded.

[0009] Furthermore, the upper crossbeam, the lower crossbeam, the left support rod and the right support rod are integrally injection molded.

[0010] Furthermore, a plurality of pressing grooves are provided on the rear side of the lower portion of the left support rod and the rear side of the lower portion of the right support rod.

[0011] Furthermore, the lower portion of the left support rod and the lower portion of the right support rod are both provided with handrail mounting holes.

[0012] Furthermore, a mesh installation groove is provided on the outer side of the back frame, and a headrest installation hole is provided on the upper cross beam.

[0013] Compared with the prior art, the utility model provides a first curved portion that curves downwards at the lower portion of the left support rod and the lower portion of the right support rod, and a second curved portion that curves upwards at the lower portion of the left support rod and the lower portion of the right support rod, and a groove extending up and down is formed between the first curved portion and the second curved portion, so that the backrest has a double-curved shape structure, forming a double-curved lumbar support, and after touching the mesh, when a person leans against the back frame, a double-layer waist-supporting effect is formed, which can support and lift the user's waist, and the backrest fits the waist and back, has a good supporting effect on the waist, improves the comfort of using the backrest, and provides a good consumer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the backrest of the utility model in the first direction;

[0016] Figure 2 It is a schematic diagram of the structure of the backrest in the second direction of the utility model.

[0017] In the figure: 1-back frame; 2-lumbar frame; 3-upper crossbeam; 4-lower crossbeam; 5-left support rod; 6-right support rod; 7-first curved portion; 8-second curved portion; 9-groove; 10-lumbar support; 11-pressing groove; 12-armrest mounting hole; 13-mesh mounting groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 and Figure 2The utility model is shown as a backrest, comprising a back frame 1, a lumbar frame 2 is provided at the lower part of the back frame 1, the back frame 1 comprises an upper crossbeam 3, a lower crossbeam 4, a left support rod 5 and a right support rod 6, the lower part of the left support rod 5 and the lower part of the right support rod 6 are both provided with a first curved portion 7 curved downward, the lower part of the left support rod 5 and the lower part of the right support rod 6 are both provided with a second curved portion 8 curved upward, and a groove 9 extending up and down is formed between the first curved portion 7 and the second curved portion 8. A first curved portion 7 that bends downward is provided at the lower portion of the left support rod 5 and the lower portion of the right support rod 6, and a second curved portion 8 that bends upward is provided at the lower portion of the left support rod 5 and the lower portion of the right support rod 6. A groove 9 extending up and down is formed between the first curved portion 7 and the second curved portion 8, so that the backrest has a double-curved structure and a double-curved lumbar support. After touching the mesh, when a person leans against the back frame 1, a double-layer waist-supporting effect is formed, which can support and lift the user's waist. The backrest fits the waist and back well, has a good supporting effect on the waist, improves the comfort of using the backrest, and provides a good consumer experience.

[0020] A waist support 10 is provided on the inner side of the lower part of the back frame 1 to stabilize the support of the back frame 1 and improve the supporting force of the back frame 1 .

[0021] The middle of the lumbar support 10 is bent backwards so that the lumbar support 10 fits the waist of the human body and improves the comfort of use. A groove is provided on the inner side of the lumbar support 10 to save materials and improve the support strength.

[0022] The upper cross beam 3 , the lower cross beam 4 , the left support rod 5 , the right support rod 6 and the waist support 10 are integrally injection-molded, so that the structure of the back frame 1 is stable and the supporting force of the back frame 1 is improved.

[0023] The upper crossbeam 3 , the lower crossbeam 4 , the left support rod 5 and the right support rod 6 are integrally injection-molded, so that the structure of the back frame 1 is stable and the supporting force of the back frame 1 is improved.

[0024] A plurality of pressing grooves 11 are provided on the rear side of the lower portion of the left support rod 5 and the rear side of the lower portion of the right support rod 6 to improve the structural strength of the lower portion of the back frame 1 and the waist support frame 2 and facilitate the installation of the mesh.

[0025] The lower part of the left support rod 5 and the lower part of the right support rod 6 are both provided with handrail mounting holes 12 to facilitate the installation of the handrail.

[0026] A mesh installation groove 13 is provided on the outer side of the back frame 1 to facilitate the installation of the mesh.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A backrest, characterized in that: It includes a back frame, a lumbar support frame is provided at the lower part of the back frame, the back frame includes an upper crossbeam, a lower crossbeam, a left support rod and a right support rod, the lower part of the left support rod and the lower part of the right support rod are both provided with a first curved portion curved downward, the lower part of the left support rod and the lower part of the right support rod are both provided with a second curved portion curved upward, and a groove extending up and down is formed between the first curved portion and the second curved portion.

2. The backrest according to claim 1, characterized in that: A waist support is arranged on the inner side of the lower part of the back frame.

3. The backrest according to claim 2, characterized in that: The middle of the waist support is bent backwards.

4. The backrest according to claim 2, characterized in that: The upper crossbeam, the lower crossbeam, the left support rod, the right support rod and the waist support are integrally injection-molded.

5. The backrest according to claim 1, characterized in that: The upper crossbeam, the lower crossbeam, the left support rod and the right support rod are integrally injection-molded.

6. The backrest according to claim 1, characterized in that: A plurality of pressing grooves are arranged on the rear side of the lower part of the left supporting rod and the rear side of the lower part of the right supporting rod.

7. The backrest according to claim 1, characterized in that: The lower part of the left support rod and the lower part of the right support rod are both provided with handrail mounting holes.

8. The backrest according to claim 1, characterized in that: A mesh installation groove is arranged on the outer side of the back frame.

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