Torque transmission device
AssigneeMita Industrial Co., Ltd.
InventorKohzoh Nishimura
Life of this patent
Estimating the term…
Abstract
A torque transmission device includes an input shaft, an output shaft, a helical spring, a fixing member, and a stopping member. The helical spring has an input portion frictionally connected to the input shaft and an output portion frictionally connected to the output shaft, and rotatable together with the input shaft and the output shaft to transmit the torque of the input shaft to the output shaft. The stopping member is engageable with an input end portion of the spring at a predetermined engaging position and adapted for stopping the output shaft at a predetermined rotational position. The fixing member is used to fix an output end portion of the spring on the output shaft at such a position as to assure a predetermined phase relationship between the engaging position and the rotational position.
Claims8
A torque transmission device comprising:
- an input shaft;
- an output shaft;
- transmission means having an input portion frictionally connected to the input shaft and an output portion frictionally connected to the output shaft, the transmission means being rotatable together with the input shaft and the output shaft to transmit the torque of the input shaft to the output shaft, the transmission means further having an input end portion and an output end portion;
- fixing means for fixing the output end portion of the transmission means on the output shaft, the fixing means being selectively placeable in either a free state in which said fixing means freely rotates over an outside surface of the output shaft in a circumferential direction thereof or a fixed state in which said fixing means is fixedly fitted on the outside surface of the output shaft;
- stopping means, operable to be engageable with the input end portion of the transmission means at a predetermined engaging position, for halting the rotation of the transmission means so as to stop the output shaft at a predetermined rotational position, and to allow the input shaft to idly rotate to interrupt the transmission of torque from the input shaft to the output shaft;
- and
- a desired phase relationship between the engaging position of the input end portion of the transmission means and the predetermined rotational position of the output shaft being adjusted by fixing the output end portion of the transmission means on a desired position of the output shaft with the fixing means.
A torque transmission device comprising:
- an input shaft;
- an output shaft;
- transmission means having an input portion frictionally connected to the input shaft and an output portion frictionally connected to the output shaft, the transmission means being rotatable together with the input shaft and the output shaft to transmit the torque of the input shaft to the output shaft, the transmission means further having an input end portion and an output end portion;
- fixing means for fixing the output end portion of the transmission means on the output shaft, the fixing means including a ring fixedly fittable on an outside surface of the output shaft, said ring having a recess for holding the output end portion of the transmission means, and the ring having a first inside diameter, and the output shaft including a tapered periphery having a smaller outside diameter smaller than the first inside diameter and a larger diameter larger than the first inside diameter;
- stopping means, operable to be engageable with the input end portion of the transmission means at a predetermined engaging position, for halting the rotation of the transmission means so as to stop the output shaft at a predetermined rotational position, and to allow the input shaft to idly rotate to interrupt the transmission of torque from the input shaft to the output shaft;
- and
- a phase relationship between the engaging position of the input end portion of the transmission means and the predetermined rotational position of the output shaft being adjusted by fixing the output end portion of the transmission means on a desired position of the output shaft with the fixing means.
Dependencies are inferred from the claim text.