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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: 2017-10-27
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 present invention provides a chair having a simple structure, imparting predetermined functions to a backrest, and improving sitting comfort. In the chair (C) according to the present invention, all structures related to the air supply mechanism ( 72 ), which is an operating mechanism for imparting predetermined functions to the backrest ( 5 ), are arranged within the range of the backrest ( 5 ), so it can effectively Structural complications and / or assembly complications caused by handling elements of the air supply mechanism ( 72 ) outside the backrest ( 5 ) are avoided. That is, according to this embodiment, the chair (C) which has a simple structure and improved sitting feeling is realizable.

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 Patents(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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