| 摘要 |
Remote control of a mechanical transmission, more particularly to the remote control of at least one gripping element by a monodirectional action, whereby the gripping element includes an articulation which can close by converging upon the object which is to be gripped and which can be locked in an active position upon contact with said object and the control device can be disengaged in the gripping position. The device includes a) a primary pulley which is joined to a control cable; b) a spring which angularly returns the primary pulley to its initial position counter to the action of the cable; c) a secondary pulley which is joined to the end of the output cable terminating in the elements which are to be controlled; d) a self-disengaging mechanical drive disc which, for a torque value exceeding a given threshold, can displace the secondary pulley in a disengaged position; e) a locking ring for the second pulley in a disengaged position; f) opposing trapezoid-shaped teeth on opposite surfaces of the disk and secondary pulley, whereby the pulley can be alternatively driven by ring dogging by the disk and the teeth can be disengaged by a cam effect on the basis of a given torque. |
