Title:
CORROSION PREVENTION DEVICE FOR VEHICLE BRAKE UNIT
Document Type and Number:
WIPO Patent Application WO/2012/140717
Kind Code:
A1
Abstract:
In the present invention, a vehicle brake unit (10) is provided with a brake drum (11) as a metal rotating member, a brake shoe (12) as a friction engagement means, and a parking brake mechanism (20) that causes the shoe (12) to engage by friction with a friction sliding surface (11a) of the drum (11) in response to operation of a parking brake by a driver. This brake unit (10) is also provided with a corrosion prevention device (30) that comprises a permanent magnet (31) and a coil (32) that constitute a power generation means, a battery (33) as a power storage means, and an electrode (34) as a means for allowing electrical conduction. The corrosion prevention device (30) uses power that is generated through flux variation by the permanent magnet (31) and the coil (32) and that is stored in the battery (33) to apply prescribed electrical power to the drum (11) via the electrode (34) that becomes electrically connected as a result of friction engagement, caused by the parking brake mechanism (20), of the shoe (12) with the friction sliding surface (11a), thereby electrically preventing corrosion of the metal members of the brake unit (10).
Inventors:
NISHIDA NAOTAKA (JP)
TURUBUCHI SATORU (JP)
KARASHIMA YUTA (JP)
HIRAMATSU SACHIO (JP)
ITO TAKAHIRO (JP)
TURUBUCHI SATORU (JP)
KARASHIMA YUTA (JP)
HIRAMATSU SACHIO (JP)
ITO TAKAHIRO (JP)
Application Number:
PCT/JP2011/059013
Publication Date:
October 18, 2012
Filing Date:
April 11, 2011
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
NISHIDA NAOTAKA (JP)
TURUBUCHI SATORU (JP)
KARASHIMA YUTA (JP)
HIRAMATSU SACHIO (JP)
ITO TAKAHIRO (JP)
NISHIDA NAOTAKA (JP)
TURUBUCHI SATORU (JP)
KARASHIMA YUTA (JP)
HIRAMATSU SACHIO (JP)
ITO TAKAHIRO (JP)
International Classes:
F16D51/00; B60T1/10; C23F13/00; F16D55/00; F16D63/00
Foreign 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:
PROSPEC PATENT FIRM (JP)
Patent business corporation Pros Peck patent firm (JP)
Patent business corporation Pros Peck patent firm (JP)
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Claims:
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