Title:
HEADREST DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/003417
Kind Code:
A1
Abstract:
Provided is a headrest device configured so that rattling can be reduced.
This headrest device (10) is configured such that: a connection section (21, 23) is constituted of an inner gear (25a, 25b) and an outer gear (27a, 27b), which mesh with each other on an axis (X1, X2); the pitch of inner tooth sections (26a, 26b) and the pitch of outer tooth sections (31a, 31b) are set to be smaller on the left side of the axis (X1, X2) than on the right side thereof; a backrest-side engagement support section (12) and the lower side of an arm section (19) are connected by a backrest-side connection section (21); the upper side of the arm section (19) and a headrest-side engagement support section (16) are connected by a headrest-side connection section (23); and a pressing operation section (33) of an operation section (32) is disposed at a distance from the axis (X1, X2), the operation section (32) being used to select: a locked state in which the inner gear (25a, 25b) and the outer gear (27a, 27b) are engaged with each other to retain a headrest; and an unlocked state in which the inner gear (25a, 25b) and the outer gear (27a, 27b) are separated from each other to allow the headrest to be operated.
Inventors:
MIZUTANI HAJIME (JP)
Application Number:
PCT/JP2017/020849
Publication Date:
January 04, 2018
Filing Date:
June 05, 2017
Export Citation:
Assignee:
TAKARA BELMONT CORP (JP)
International Classes:
A61G15/12; A47C1/10; A47C7/38
Foreign References:
JPS63130067A | 1988-06-02 | |||
JP2008113761A | 2008-05-22 | |||
JPH0250240U | 1990-04-09 | |||
US20040227388A1 | 2004-11-18 | |||
JPS56145848A | 1981-11-12 |
Attorney, Agent or Firm:
FUKUDA Shinichi et al. (JP)
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