| 摘要 |
<p>An electric brake system includes a plurality of planetary rollers (12) kept in rolling contact with the radially outer surface of a rotary shaft (11), a carrier (14) which is restrained from axial movement, an axially movable outer ring member (13), and a friction pad (8) provided at the axially front end of the outer ring member (13). The rotation of the rotary shaft (11) is converted to axial movement of the outer ring member (13), thereby pressing the friction pad (8) with the outer ring member (13). The brake system further includes a reaction force receiving member (15) provided axially rearwardly of the outer ring member (13) for receiving an axial rearward reaction force applied to the outer ring member (13) when the friction pad (8) is pressed by the outer ring member (13). A displacement sensor (38) measures the displacement of the reaction force receiving member (15), thereby detecting the pressing force of the friction pad. With this arrangement, the sensor is less likely to be affected by frictional heat generated between the friction pad and the brake disk.</p> |
