| 摘要 |
PROBLEM TO BE SOLVED: To reduce the load torque of a motor of an assist mechanism having a reverse input block mechanism, and to simplify a structure of a main body side of a movable apparatus which is mounted with the assist mechanism.SOLUTION: A planetary gear device 2 as a differential device to which the torque of the power of a motor 1 and torque by man power are inputted is arranged in the middle of a drive passage of an assist mechanism which is mounted to a wheel chair as a movable apparatus, a torque sensor 4 for detecting the torque of the man power is added to the planetary gear device 2, thereby a structure of a main body side of the wheel chair can be simplified, a lock type reverse input block clutch 3 is employed as a reverse input block mechanism which is interposed between the motor 1 and the planetary gear device 2, and thereby the load torque of the motor 1 can be reduced compared with the case of employing an idle-type reverse input block clutch by an amount that there is no motion between a member rotating at the drive of the motor 1 and a fixed member. |
