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公开(公告)号：US20190329752A1
公开(公告)日：2019-10-31
申请号：US16467771
申请日：2017-12-15
Applicant: ADVICS CO., LTD.
Inventor： Takayuki WAZAKI , Shinichiro YUKOKU
Abstract: An electrically operated brake device includes an electric motor pressing friction member against a rotating member, and a returning mechanism moving the friction member in a direction away from the rotating member when the electric motor is not energized. The returning mechanism includes a spiral spring and a housing. The spiral spring includes a restraint section. The housing includes a holding surface. When the electric motor is rotated in a forward direction, the restraint section presses the holding surface, and the spiral spring gives a returning torque in a reverse direction. When the returning torque exceeds a predetermined torque, the restraint section slips out of the holding surface. The holding surface is inclined with respect to a normal line surface including a contact part between the restraint section and the holding surface and an axis line of the rotating shaft.
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公开(公告)号：US20230249658A1
公开(公告)日：2023-08-10
申请号：US18002890
申请日：2021-06-25
Applicant: ADVICS CO., LTD.
Inventor： Takayuki WAZAKI , Satoshi HIRATA
CPC classification number: B60T13/746 , B60T1/067 , F16D51/22 , F16D65/22 , F16H25/2015 , F16D2121/24
Abstract: An electric actuator includes an input member that is rotationally driven by the electric motor and includes a first rotation stop part on an inner periphery, an output member that includes a second rotation stop part engageable with the first rotation stop part, and a first screw part on an outer periphery, and a linear motion member that includes a second screw part engageable with the first screw part. Both the screw mechanism and the rotation-stop mechanism are formed on the outer periphery of the output member. Therefore, in the electric actuator, the radial and axial dimensions are shortened.
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