Title:
ELECTRIC LINEAR MOTION ACTUATOR AND ELECTRIC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/185229
Kind Code:
A1
Abstract:
A lock mechanism capable of locking and unlocking the rotation of a rotor shaft (12) of an electric motor (11) in an electric linear motion actuator comprises: a plurality of locking holes (41) circumferentially provided on the lateral surface of one gear (33) of a plurality of gears configuring a gear deceleration mechanism (13); a lock pin (42) provided so as to move forward and backward with respect to the locking holes (41) and engaged with the locking holes (41) to lock the gear (33) when moved forward; and a linear solenoid (43) for moving the lock pin (42) forward and backward. The lock pin (42) is integrally connected to a plunger (47) of the linear solenoid (43). The lock pin (42) is made of a nonmagnetic material. Thus, the magnetism of a magnetic circuit formed between a coil (45) and a plunger (47) of the linear solenoid (43) is prevented from leaking out through the lock pin (42) and a plunger (47) is reliably moved due to attractive force along with the energization of the coil (45), thereby improving the reliability of a locking operation.
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| JPH10215555 | ELECTROMAGNETIC SOLENOID |
Inventors:
YASUI MAKOTO (JP)
MURAMATSU MAKOTO (JP)
SAOYAMA YUKI (JP)
MURAMATSU MAKOTO (JP)
SAOYAMA YUKI (JP)
Application Number:
PCT/JP2014/061267
Publication Date:
November 20, 2014
Filing Date:
April 22, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
H02K33/02; F16D65/18; F16H25/20; H02K7/116; F16D121/24; F16D125/40; F16D125/48; F16D127/06; F16D129/08
Foreign References:
| JP2012087889A | 2012-05-10 | |||
| JP2007103887A | 2007-04-19 | |||
| JPH07177721A | 1995-07-14 |
Attorney, Agent or Firm:
KAMADA Naoya et al. (JP)
Naoya Kamata (JP)
Naoya Kamata (JP)
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