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Back of chair

A seat back and cushion technology, applied to chairs, other seating furniture, stools, etc., can solve problems such as inconvenient operation, inability to easily adjust the position of supports, and increased number of parts

Inactive Publication Date: 2015-10-28
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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Examples

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Embodiment Construction

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

[0040] In the description, the orientation is preset such that the backrest disposed relative to the rear of the seat represents the rear of the chair and its opposite side represents the front of the chair.

[0041] Accordingly, the surface of the backrest in contact with the user's waist and back represents the front of the backrest, and the opposite side thereof represents the rear of the backrest.

[0042] figure 1 is a perspective view of a seat made with the seat back of the preferred embodiment of the present invention, and figure 2 yes figure 1 An exploded view of the backrest is 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, and a seat connected above the c...

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PUM

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Abstract

The present invention relates to a backrest for 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 concave-convex degree of the backrest according to the contour of the user's waist, so that the backrest can fit the user's waist, back and other parts more closely. Background technique [0002] Generally, a seat includes a seat cushion and a backrest. [0003] In particular, the backrest is a part that supports the user from the waist to the back, the shoulders and the cervical spine, so it can be manufactured according to ergonomics and has various forms. [0004] Backrests are usually made by placing a sheet of wood into a frame and covering the surface with a layer of cloth or leather. [0005] Recently, a lumbar support rod has been added to the backrest in order to relieve lumbar fatigue and reduce the burden on the spine. [0006] The present applicant conducted research and development based on the technologies related to se...

Claims

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Application Information

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