Title:
ELECTRIC MOTOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/034247
Kind Code:
A1
Abstract:
Provided is an electric brake device that includes a reverse input holding means, said electric brake device being capable of achieving reduction in space, the number of components, and cost. In normal rotating operation by a rotor (8), the axial position of the rotor (8) is held, and the rotor (8) is freely rotatable with respect to a stator (7). When a parking brake switch is operated in the state in which a vehicle is stopped, the rotor (8) is slid to one side in the axial direction by a rotor sliding means against a load given by an axial preloading means (54). As a result, an engagement portion (55) of the rotor (8) and a portion to be engaged (56) of a housing (4) are engaged with each other. In the engaged state, the reverse input holding means holds a rotation angle of the rotor (8), with the engaged state between the engagement portion (55) and the portion to be engaged (56) being maintained with respect to a load of reverse input acting as external force on the rotor (8) along with reaction force of pressing force of a brake friction member.
Inventors:
MASUDA YUI (JP)
Application Number:
PCT/JP2017/029170
Publication Date:
February 22, 2018
Filing Date:
August 10, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
H02K7/12; H02K7/06; H02K16/04
Foreign References:
| JPS49102905U | 1974-09-04 | |||
| JP2005094932A | 2005-04-07 | |||
| JP2008109842A | 2008-05-08 | |||
| JP2013001203A | 2013-01-07 |
Other References:
See also references of EP 3503357A4
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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