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seat back

A technology for seat backs and cushions, which is applied to chairs, other seating furniture, stools, etc., can solve the problems of increasing the number of parts, increasing the production cost, and prolonging the production cycle.

Inactive Publication Date: 2018-06-05
DAWON CHAIRS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, the backrest in Patent Document 1 has the following disadvantages: since it uses fixing bolts to fix the support plate at a specific position on the vertical bar, the position of the support cannot be easily adjusted
[0016] In addition, in Patent Document 2, the seat back with the lumbar support function also has the disadvantage that it is impossible to adjust the height of the lumbar support bar and the direction of the front and rear bumps.
[0019] However, Patent Document 3 still has the following disadvantages: since the components for controlling the height and protrusion of the supporting part are formed independently, with the complexity of the lumbar support rod, the increase in the number of components will lead to an increase in production costs and a prolonged production period.
[0020] Moreover, Patent Document 3 also has such a disadvantage that the user must perform operations separately when adjusting the height and the degree of protrusion, thereby causing inconvenience in operation.

Method used

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Embodiment Construction

[0039] Hereinafter, the seat back will be described in detail with reference to the accompanying drawings according to a preferred embodiment of the present invention.

[0040] In the specification, the direction is preset as follows: the backrest provided relative to the back of the seat represents the back of the chair, and the opposite side represents the front of the chair.

[0041] Correspondingly, the surface of the backrest in contact with the waist and back of the user represents the front of the backrest, and the opposite side represents the back of the backrest.

[0042] figure 1 Is a perspective view of a seat made of the seat back of the preferred embodiment of the present invention, and figure 2 Yes figure 1 The exploded view of the backrest shown.

[0043] Such as figure 1 As shown, the seat made of the seat back of the preferred embodiment of the present invention includes a plurality of chair legs (11) mounted with wheels, which are connected above the chair legs (11) ...

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PUM

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Abstract

The present invention relates to a back of a chair, comprising: a frame which is formed in a square frame shape; a seat part which is coupled to the front surface of the frame; and an adjustment part which adjusts the protruding degree of the seat part to correspond to the waist portion of a user. Thereby, the present invention can adjust the protruding degree of a seat according to the waist portion of the user.

Description

Technical field [0001] The present invention relates to a seat back. More specifically, the seat back of the present invention can adjust the degree of unevenness of the backrest according to the waist contour of the user, so that the backrest fits the waist and back of the user more closely. Background technique [0002] Generally, a seat includes a seat cushion and a backrest. [0003] In particular, the backrest is a component that supports the user from the waist to the back, shoulders, and cervical vertebrae. Therefore, it can be manufactured according to ergonomics in various forms. [0004] The backrest is usually made by putting a sheet of material into the frame and covering the surface with a layer of cloth or leather. [0005] Recently, in order to relieve lumbar fatigue and reduce the burden on the spine, lumbar support rods have been added to the backrest. [0006] The applicant has conducted research and development based on the seat back-related technologies mentioned in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47C7/40
CPCA47C7/462
Inventor 李知映
Owner DAWON CHAIRS