Title:
ELECTRICALLY-DRIVEN BRAKING DEVICE FOR VEHICLE
Document Type and Number:
Japanese Patent JP2019085065
Kind Code:
A
Abstract:
To provide a return mechanism which is applied to an electrically-driven braking device and adopts a spiral spring, in which torque limit works properly.SOLUTION: An electrically-driven braking device comprises: an electric motor which presses a friction member onto a rotary member which is rotated integrally with a wheel; and a return mechanism which generates a return torque to the electric motor in a direction in which the friction member is separated from the rotary member when electric conduction of the electric motor is not performed. The return mechanism includes: "a spiral spring having a restraining part which is formed in such a manner that one end portion thereof is engaged with a rotary shaft driven by the electric motor, and the other end portion thereof, which is positioned on a side opposite to one end, is folded"; and a housing which stores the spiral spring, and has an inhibition face which contacts the restraining part. The other end is so configured as to be positioned on a side opposite to an axis with respect to an extension surface in which the inhibition face is so extended as to approach the axis.SELECTED DRAWING: Figure 6
Inventors:
UCHIDA TATSUKI
HIRATA SATOSHI
HIRATA SATOSHI
Application Number:
JP2017217068A
Publication Date:
June 06, 2019
Filing Date:
November 10, 2017
Export Citation:
Assignee:
ADVICS CO LTD
International Classes:
B60T13/74; F16D7/02; F16D65/18
Domestic Patent References:
| JP2017007569A | 2017-01-12 | |||
| JP2013024389A | 2013-02-04 | |||
| JP2005351188A | 2005-12-22 |