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Patent Searching and Data


Title:
FORWARD/BACKWARD POSITION ADJUSTING DEVICE FOR HEADREST
Document Type and Number:
Japanese Patent JPH03118007
Kind Code:
A
Abstract:

PURPOSE: To obtain an operating device utilizing a non-stage adjusting type brake, and to always operate satisfactorily and surely by constituting a fixed regular circular brake drum, and a regular circular disk of a small diameter fitted loosely to an operating shaft, and also, provided in an eccentric state in the drum.

CONSTITUTION: When an operating dial 21 is rotated by a manual operation, and an operating shaft 19 is rotated counterclockwise, since the left/right width of an operating plate 33 is formed so as to be narrower than the left/right width of a fitting groove 36 of a regular circular disk 34, in the beginning, only the operating plate 33 runs idle, and an engaging projection 27 of the operating plate 33 abuts on a moving side engaging surface 48 of a right brake block 46. When the operating plate 33 rotates counterclock, since a clearance is formed between a lock projection 57 and lock side engaging surfaces 50, 51 of the left and the right brake blocks 46, 47, the clearance becomes a recess, and only the right brake block 46 is rotated counterclockwise without rotating an eccentric regular circular disk 34. Accordingly, a lock state of the right brake block 46 is released.


Inventors:
YOSHIDA MASAMI
Application Number:
JP25667589A
Publication Date:
May 20, 1991
Filing Date:
September 30, 1989
Export Citation:
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Assignee:
TOKYO SEAT KK
International Classes:
A47C7/38; F16D49/20; F16D63/00; (IPC1-7): A47C7/38
Attorney, Agent or Firm:
Kotaro Shinseki (2 outside)