| 摘要 |
The invention relates to torque transmission device which is manually controlled in response to a differential in rotational velocity between a shaft and an actuating plate mounted on the shaft. The device acts as a deadman brake, clutch and/or as a power assist for various mechanically driven manually controlled devices. The device comprises a shaft having a longitudinal axis, forward and rearward ends. An input plate journalled to rotate, under motive force, about the axis at a position longitudinally fixed and forward relative to the shaft. A forward clutch plate is mounted for rotation with the shaft and reciprocating longitudinal motion on the shaft rearward of the input plate. An actuating plate is mounted on the shaft rearward of the forward clutch plate. The shaft and actuating plate interact with threads to move the actuating plate longitudinally relative to the shaft in response to a differential in rotational velocity between the shaft and actuating plate. As a result forward and rearward motion of the actuating plate respectively urges the forward clutch plate forwardly to engage the input plate and rearwardly to disengage the input plate. |
