Title:
車両用ブレーキユニットの防食装置
Document Type and Number:
Japanese Patent JP5293898
Kind Code:
B2
Abstract:
A vehicle brake unit (10) includes a brake drum (11) as a rotating member of metal, brake shoes (12) as a friction engagement means, and a parking brake mechanism (20) for frictionally engaging the shoes (12) with a friction sliding surface (11a) of the drum (11) in accordance a parking brake operation by a driver. The brake unit (10) has a corrosion prevention device (30) composed of permanent magnets (31) and a coil (32) which constitute a power generation means, a battery (33) as a power storage means, and electrodes (34) as an electrical-conduction allowing means. By using electric power generated by the permanent magnets (31) and the coil (32) due to change in magnetic flux and stored in the battery (33), the corrosion prevention device (30) applies predetermined electric power to the drum (11) via the electrodes (34) which are electrically connected to the drum (11) when the brake shoes (12) are frictionally engaged with the friction sliding surface (11a) by the parking brake mechanism (20). Thus, the corrosion prevention device (30) electrically prevents corrosion of metal members of the brake unit (10).
Inventors:
Naotaka Nishida
Satoru Tsurufuchi
Yuta Shinjima
Hiramatsu Yukio
Takahiro Ito
Satoru Tsurufuchi
Yuta Shinjima
Hiramatsu Yukio
Takahiro Ito
Application Number:
JP2012527140A
Publication Date:
September 18, 2013
Filing Date:
April 11, 2011
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F16D51/00; B60T1/10; C23F13/00; F16D55/00; F16D63/00
Domestic Patent References:
| JPH1129886A | 1999-02-02 | |||
| JPH0622110U | 1994-03-22 | |||
| JP2002250377A | 2002-09-06 | |||
| JP2006347513A | 2006-12-28 | |||
| JP2011057124A | 2011-03-24 |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office