| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow the miniaturization and power saving of an electric motor by suppressing a mechanical loss of a deceleration mechanism while allowing the adjustment of lengths of right/left parking wires without using an equalizer so as to enable the space saving and miniaturization of the mechanism. <P>SOLUTION: This brake is composed of a hydraulic pump 2, a reservoir tank 3, a normally-closed type solenoid valve 12, a check valve 10, a pair of hydraulic cylinders 5, 6 having the same diameters, a communication passage 7, a hydraulic pressure sensor 17, and an ECU 20. The pair of parking wires 15, 16 are connected to hydraulic pistons 13, 14 arranged in the respective hydraulic cylinders 5, 6, respectively. Hydraulic pressures equivalent to loads on the pair of parking wires 15, 16 are detected by the hydraulic pressure sensor 17. The normally-closed type solenoid valve 12 is controlled by the ECU 20 based on the detected hydraulic pressure, thus controlling the traction and return of the parking wires 15, 16. <P>COPYRIGHT: (C)2009,JPO&INPIT |
