US 12,228,185 B2
Disk brake
Rikiya Yoshizu, Hitachinaka (JP)
Assigned to HITACHI ASTEMO, LTD., Ibaraki (JP)
Appl. No. 17/439,991
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Mar. 18, 2020, PCT No. PCT/JP2020/011941
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/217788, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-081126 (JP), filed on Apr. 22, 2019.
Prior Publication US 2022/0307562 A1, Sep. 29, 2022
Int. Cl. F16D 65/18 (2006.01); B60T 13/74 (2006.01); F16D 121/24 (2012.01); F16D 127/06 (2012.01)
CPC F16D 65/18 (2013.01) [B60T 13/746 (2013.01); F16D 2121/24 (2013.01); F16D 2127/06 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A disk brake, the disk brake being configured to transmit a driving force from an electric motor to a piston via a transmission mechanism, thereby thrusting forward the piston and pressing a braking member against a braking receiving member, the disk brake comprising:
a braking force holding mechanism configured to restrict a rotation of the transmission mechanism to hold a braking force based on driving of a solenoid actuator,
wherein the braking force holding mechanism includes:
a holding member configured to move based on the driving of the solenoid actuator to restrict the rotation of the transmission mechanism; and
an engagement member coupled with the holding member, the engagement member being rotatably supported on a housing and configured to prohibit a movement of the holding member,
wherein, when the holding member is subjected to application of an excitation force, the engagement member causes a force to be applied to the holding member in a direction opposite from a direction in which the excitation force is applied.