Patent ID: 6663086
Filing Date: 2003-12-16
Classification: B66D

Abstract:
An improved structure of a cable winch used in vehicle, comprising a rolling cylinder component having one end being mounted with a gear speed-reducing device and the other end being mounted with a motor so as to transmit the power of the motor to the roIling cylinder component by the gear speed-reducing device, and the speed-reducing device including a control button, a transmission shaft, a gear box, a sun gear, a plurality of planetary gear sets, a clutch and planet gear set, and a fastening ring, characterized in that:the interior of the control button is provided with a protruded tubular section and the center of the tubular section is provided with an inner hole, and the circumferential edge thereof is arranged with protruded pegs; the transmission shaft is a hexagonal rod body having one end being inserted into the inner hole of the control button using the fastening ring and a recessed ring is provided close to the middle section thereof; the bottom surface of the gear box is provided with a through hole and the inner circumferential edge of the through hole is provided with a recess to match with the protruded peg of the control button; the clutch and planet gear set includes a planet gear train, a front coves a moving gear, a worm-like spring, and a fixing board, and the center of the front cover is pressed into a protruded section surrounded wit teeth hole and the board surface of the front cover is provided with an engaging hole and by means of the fixing board to mount the moving gear and the worm-like spring so that the moving gear is extendable and retractable within the protruded section of the front cover; the surface of the fixing board is provided with crooked leg to correspond with the engaging hole of the front cover so that the moving gear and the worm-like spring are mounted on the front cover; and the center of a rotating shaft of the motor is provided a polygonal insertion hole with external diameter substantially the same as the transmission shaft, the transmission shaft is inserted into the inner hole of the control button and is locked with the fastening ring, and the tubular section of the control button is inserted at the position of the through hole of the gear box and the protruded peg of the control button is in alignment with the recess of the gear box and the transmission shaft is extended to the center of the gear box and in sequence the transmission shaft is mounted with a pad, the sun gear, a plurality of planetary gear sets and the clutch and planet gear set, thereby in releasing the cable, the control button is pulled and turned so that the protruded peg urges the top edge of the through hole of the gear box and the button pulls the transmission shaft and the fastening ring compresses the moving gear and the worm-like spring so that the moving gear disengages with a teeth section of the rolling cylinder, and the rolling cylinder is dislocated from the clutch and planet gear set and rotates freely, and the cable is refracted rapidly and conveniently.