Title:
BRAKE LINING ABRASION DETECTING DEVICE
Document Type and Number:
Japanese Patent JP3738812
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a highly accurate brake lining abrasion detecting device with the simple constitution.
SOLUTION: In an expander 50 in a drum brake, a sleeve 56 is expanded in the lateral direction in a drawing by a wedge 52 inserted into a housing 51 at brake operating time, a shoe locked on a clip 58 is rocked, and a lining 23 is pressed to a drum to be frictionally braked. When a moving distance of the sleeve 56 increases since the lining 23 is abraded, the sleeve 56 rotates by the interaction with a drive ring 62 meshing with the sleeve outer periphery to deliver a pressing screw 57 threadedly engaging with this sleeve by a moving distance increase quantity (a lining abrasion quantity). A flat surface 56c is formed on a sleeve outer peripheral surface, and a detecting head 80 of a displacement detecting device detects rotation of the sleeve 56. A controller performs warning operation by a warning means when an integral rotating speed of the sleeve 56 reaches a prescribed rotating speed.
Inventors:
Mitsuyoshi Oba
Toshiyuki Ishida
Shin Yoshida
Junya Kaneko
Toshiyuki Ishida
Shin Yoshida
Junya Kaneko
Application Number:
JP2000008529A
Publication Date:
January 25, 2006
Filing Date:
January 18, 2000
Export Citation:
Assignee:
Tbk corporation
International Classes:
F16D66/02; F16D65/14; F16D65/22; F16D65/38; F16D65/56; (IPC1-7): F16D66/02; F16D65/38
Domestic Patent References:
| JP10501320A | ||||
| JP60501571A | ||||
| JP4291112A | ||||
| JP10054712A |
Attorney, Agent or Firm:
Masago Onishi