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Title:
BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/104683
Kind Code:
A1
Abstract:
 The present invention enables suitable control of stepped increases in the clamping force of a brake device equipped with an electric parking brake function. A computation circuit (20), a memory (21), motor drive circuits (23), and the like of a parking brake control device (19) constitute a control unit, said control unit also configured to include a stepped-increase control unit that increases, in a stepped manner, the clamping force applied by brake pads (33) to a disc rotor (4). If the start of contact between the disc rotor (4) and the brake pads (33) as a result of power supplied from the parking brake control device (19) to an electric motor (43B) is detected by a current sensor unit (24) through a motor current, the stepped-increase control unit executes a control in accordance with a predetermined processing sequence, wherein the supply of power to the electric motor (43B) is repeatedly started and stopped so as to increase the clamping force in a stepped manner.

Inventors:
KOBUNE, Tatsuro (Hitachi Automotive Systems Ltd., 6-3, Fujimi 1-chome, Kawasaki-ku, Kawasaki-sh, Kanagawa 11, 〒2100011, JP)
YOKOYAMA, Wataru (Hitachi Automotive Systems Ltd., 6-3, Fujimi 1-chome, Kawasaki-ku, Kawasaki-sh, Kanagawa 11, 〒2100011, JP)
MATSUBARA, Kenichiro (Hitachi Automotive Systems Ltd., 6-3, Fujimi 1-chome, Kawasaki-ku, Kawasaki-sh, Kanagawa 11, 〒2100011, JP)
Application Number:
JP2015/086184
Publication Date:
June 30, 2016
Filing Date:
December 25, 2015
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
B60T13/74; B60T8/00; F16D55/22
Foreign References:
JP2006070962A2006-03-16
JP2008068838A2008-03-27
JP2008049800A2008-03-06
JPH04271945A1992-09-28
Attorney, Agent or Firm:
ONO, Shinjiro et al. (YUASA AND HARA, Section 206 New Ohtemachi Bldg., 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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