Title:
STRUCTURE FOR ADJUSTING AND POSITIONING BACKREST OF SEAT CHAIR
Document Type and Number:
Japanese Patent JP2017176797
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a structure for adjusting and positioning a backrest of a seat chair.SOLUTION: A structure for adjusting and positioning a backrest of a seat chair of the present invention adopts one for permitting assembling of a rear tilt adjustment unit along a boundary portion between a seat frame and a backrest frame of the seat chair. The rear tilt adjustment unit urges so as to move inward or push out a detention body coupled with a rear portion of a bolt stage with one end extending inwardly by the twist of a control knob to a predetermined direction, controls a spring fitted between the detention body and a bearing body so as to be compressed or outwardly expanded with a predetermined counter interval, and applies an installation having a necessary comparative securing state or a comparative relaxed state in the backrest.SELECTED DRAWING: Figure 1
Inventors:
OMORI TOSHIKAZU
Application Number:
JP2016106341A
Publication Date:
October 05, 2017
Filing Date:
May 27, 2016
Export Citation:
Assignee:
OASYSCHAIR CO LTD
International Classes:
A47C3/02
Domestic Patent References:
| JPS55109446U | 1980-07-31 |
Foreign References:
| US5026117A | 1991-06-25 | |||
| US4328943A | 1982-05-11 |
Attorney, Agent or Firm:
▲吉▼川 俊雄
Kana Ichikawa
Kana Ichikawa