Electric brake apparatus for vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 8, 2015
Grant Date -
May 2, 2013
app pub date -
Jun 8, 2010
filing date -
Jun 8, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electric caliper includes an electric drive mechanism which generates a pressing force for pressing a friction pad against a disc rotor, and a retraction mechanism provided in a piston of a pressing mechanism. The mechanism includes a reversing member which is compressed by a force transmission portion and a pressing portion of the piston to thereby generate a reverse force. Also, the mechanism includes a movable element which relatively retracts due to the reverse force, and a first elastic member which is compressed by the movable element and the advancing force transmission portion to thereby apply a restoring force. Thus, in the mechanism, the reversing member generates the reverse force as a result of advancement of the force transmission portion, and the movable element relatively retracts due to the reverse force and compresses the first elastic member. When free rotation (no-load rotation) of a brake motor of the mechanism is permitted, the restoring force generated as a result of compression of the first elastic member is applied to the force transmission portion, whereby the piston is retracted.
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