Title:
VEHICLE ELECTRIC BRAKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/115872
Kind Code:
A1
Abstract:
An electric braking device for a vehicle, whereby the rotational motion of an electric motor is converted to linear motion of a pressing member that presses a friction member, by screw members. A lubricant is stored in gaps (Cfk1, Cfk2, Csm, Cso) between the screw members. A control means rotates the electric motor in the forward direction when increasing the pressing force and rotates the electric motor in the reverse direction when reducing the pressing force. If the pressing force is reduced, the electric motor is rotated in the reverse direction until the lubricant present in the gaps (Cfk1, Cfk2, Csm, Cso) moves from "sites other than first contact sections (Fmn1, Fon1) for screw members that come in contact when the pressing force is increased," to the first contact sections (Fmn1, Fon1). As a result, a rotational/linear motion conversion mechanism (screw members) for an electric braking device for a vehicle can be provided that maintains good lubricating properties over the long term.
Inventors:
YASUI YOSHIYUKI (JP)
HASHIDA KOICHI (JP)
EMURA NAOMI (JP)
KODAMA HIROYUKI (JP)
HASHIDA KOICHI (JP)
EMURA NAOMI (JP)
KODAMA HIROYUKI (JP)
Application Number:
PCT/JP2014/051684
Publication Date:
July 31, 2014
Filing Date:
January 27, 2014
Export Citation:
Assignee:
ADVICS CO LTD (JP)
YASUI YOSHIYUKI (JP)
HASHIDA KOICHI (JP)
EMURA NAOMI (JP)
KODAMA HIROYUKI (JP)
YASUI YOSHIYUKI (JP)
HASHIDA KOICHI (JP)
EMURA NAOMI (JP)
KODAMA HIROYUKI (JP)
International Classes:
B60T13/74; F16D65/18; F16D121/24; F16D125/40
Domestic Patent References:
| WO2011155074A1 | 2011-12-15 |
Foreign References:
| JP2002213507A | 2002-07-31 | |||
| JP2010083282A | 2010-04-15 | |||
| JP2012111446A | 2012-06-14 |
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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