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Chair and support mechanism unit thereof

A seat and back support technology, applied to chairs, other seat furniture, stools, etc., can solve the problems of not being able to lean on the shell, not being able to simplify the backrest structure, and difficult structures, so as to reduce the load, increase the efficiency of assembly operations, and improve The effect of comfort

Inactive Publication Date: 2011-11-23
ITOKI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In addition, the backrest of the conventional three-layer structure also has the following problem, that is, it is difficult to simplify the structure because it cannot function as a backrest only by relying on the outer shell, and it must have an inner shell with a cushion.
That is, in conventional shells, a plurality of ribs are generally formed on the front in order to maintain strength, so people cannot lean against the shell, and therefore, the structure of the backrest cannot be simplified.

Method used

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  • Chair and support mechanism unit thereof
  • Chair and support mechanism unit thereof
  • Chair and support mechanism unit thereof

Examples

Experimental program
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Effect test

no. 2 Embodiment

[0102] Figure 12 and Figure 13 Shows the second embodiment. In the present embodiment, the hook portion 33 of the main member 10 of the backrest 3 opens toward the near side. In addition, although the whole is not shown in a figure, it has the back support unit 13 of the same structure as 1st Example.

[0103] And, in this embodiment, when backrest 3 is installed on the backrest support unit 13, utilize the second frame 18 of backrest support unit 13 and the elastic deformation of main component 10, main component 10 is fully fitted on the second frame 18, and then the horizontal axis portion 18a of the second frame 18, the main part 10 and the claw portion 33 are fitted to each other.

[0104] (6) Others

[0105] The present invention can be implemented in various embodiments other than the above-described embodiments. For example, the shape of the backrest unit and the shape of the base can be arbitrarily changed according to requirements such as design.

[0106] In ...

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PUM

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Abstract

A chair is provided with a base 6 fixed at an upper end of a leg pillar 5 , a back support unit 13 attached to the base 6 so as to tilt backward, a backrest 3 attached to the back support unit 13 , and a spring unit 14 supporting the backward tilt of the back support unit 13 . The spring unit 14 is to expand and contract in a back and forth direction when viewed from above and arranged further behind than a tilt supporting point 16 a of the back support unit 13 . The back support unit 13 , the spring unit 14 , and the base 6 constitute a kind of link mechanism and the spring unit 14 will expand and contract mainly at the front end, while tilting backward.

Description

technical field [0001] The present invention relates to a seat (swing chair) with a reclining backrest and a support mechanism used therein. Background technique [0002] In a rocking chair with a reclining backrest, a spring mechanism is used to support the reclining movement of the backrest. As the spring mechanism, although compression coil springs or leaf springs, torsion bars, rubber, air cylinders (or gas springs) etc. can be used, generally compression coil springs are used in most cases, and in most cases the compression coil springs are arranged in the opening toward the In the box-shaped base on the top, it is arranged in a posture extending in a substantially front-rear direction in a plan view. [0003] In addition, the spring is supported by the front and rear spring seats, and the initial elastic force (hardness) of the coil spring is adjusted by adjusting the distance between the front and rear spring seats. The adjustment mechanism of the initial elastic fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47C7/40
Inventor 竹内裕
Owner ITOKI CORP