Title:
CHAIR STRUCTURE OR SEAT STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/060347
Kind Code:
A1
Abstract:
[Problem] Regarding the improvement of a seating surface structure of a chair or a seating surface structure of a seat, various inventions, ideas, and proposals for a shape structure as well as research have recently been made. [Solution] The present invention includes a structure in which the coccyx of a seated person can be positioned and a space that the buttocks of the seated person do not contact is formed between a lower seat surface and a seat back rest of a chair. It is possible to avoid a reaction force from below to a tail part including the coccyx due to the ground contact load on a seat surface of the tail part, which occurs when the seated person is seated in a seat according to the related art, thereby contributing to the stabilization of the pelvis and spinal column. Furthermore, left and right ischial tuberosity parts can be stopped on the same line by the stopper effect. Furthermore, a rotational force or twisting of the pelvis part can be suppressed, and accordingly, the effect of stabilizing the pelvis and spinal column of the seated person can be exhibited.
Inventors:
HAYASHI TOSHIHIRO (JP)
Application Number:
PCT/JP2020/035959
Publication Date:
April 01, 2021
Filing Date:
September 24, 2020
Export Citation:
Assignee:
HAYASHI TOSHIHIRO (JP)
International Classes:
A47C7/02; A47C27/00; A61F5/01
Foreign References:
| JP2007000570A | 2007-01-11 | |||
| JP2014042785A | 2014-03-13 | |||
| JP2016002439A | 2016-01-12 | |||
| JPS52115405U | 1977-09-01 | |||
| US5452940A | 1995-09-26 | |||
| EP0032839A2 | 1981-07-29 |
Attorney, Agent or Firm:
TAKENAKA Kazunori (JP)
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