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Chair

A chair and backrest technology, which is applied in the field of chairs with backrests to achieve the effect of simple structure and improved sitting feeling

Inactive Publication Date: 2014-05-21
KOKUYO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if it is a chair like the above-mentioned Patent Document 1, it is easy for the person sitting to operate the lumbar support device. Additional structures must be provided on both the armrest and the backrest to handle the air duct

Method used

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Embodiment Construction

[0047] Hereinafter, one embodiment of the case where the present invention is applied to a synchro-tilt type office swivel chair C will be described with reference to the drawings.

[0048] The chair C as Figure 1 to Figure 23 As shown, it has: a leg body 1; a support base 2 supported on the upper part of the leg body 1 and capable of horizontal rotation; a seat 3 arranged on the support base 2; a back support bar 4 of the base 2 ; and a backrest 5 mounted on the back support bar 4 .

[0049]

[0050] leg body 1 as Figure 1 to Figure 6 As shown, it includes: a leg spring type leg base 11 having casters 13 ; and a leg support 12 erected at the center of the leg base 11 . The leg support 12 is a general support mainly composed of a gas spring, and the support base 2 is attached to the upper end of the leg support 12 .

[0051]

[0052] support base 2 as Figure 1 to Figure 6 , Figure 9 as well as Figure 15 As shown, it is supported by the leg body 1 so that it can ...

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Abstract

The invention provides a chair, which has a simple structure and has improved sitting sense with the function of a backrest. An integral structure relevant to an air supply mechanism (72) is disposed in the range of the backrest (5), and thereby the problems of complicated structure and / or complicated assembling since components of the air supply mechanism (72) are disposed outside of the backrest (5) can be resolved. The chair (C) has a simple structure and an improved sitting sense.

Description

technical field [0001] The invention relates to a chair with a backrest. Background technique [0002] Conventionally, various chairs including a backrest having a backboard for supporting the back of an occupant, and an operating mechanism for imparting a predetermined function to the backrest are incorporated into the backboard have been proposed. Among these chairs, as an example, a chair provided with a lumbar support device for supporting the waist of a sitting person as an operating mechanism for imparting a predetermined function to the backrest (for example, refer to Patent Document 1). [0003] If the chair described in the above-mentioned Patent Document 1 is described, an airbag is arranged on the backrest at a position supporting the waist, and a pump as a main part for supplying air to the airbag and a pump for supplying air to the airbag are arranged on the armrest. The operating lever for expanding and contracting the pump. Accordingly, the occupant can adju...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C7/00A47C7/44
Inventor 上田伸行高桥泰崇伊藤和幸中村贵士
Owner KOKUYO CO LTD
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