Patent ID: 6045303
Filing Date: 2000-04-04
Classification: B25B,Y10T

Abstract:
A rotatable torque adjusting device adapted to be incorporated in a rotation tool for adjusting output torque of the rotation tool, wherein the rotation tool comprises a front end surface on which a support cylinder is provided to rotatably support therein an output shaft which provides the output torque, a plurality of the cavities provided on the front end surface in such a way to surround the support cylinder and each receiving therein a spherical member which applies a force to a rotating disk inside the rotation tool to adjust the output torque, the torque adjusting device comprising a cam ring rotatably fit over the support cylinder and having a plurality of circumferentially-extending arc-shaped camming projections, each defining a cam, and a follower ring non-rotatably fit over the support cylinder and having a plurality of camming projections, each defining a follower corresponding to and camming-engageable with the cam of the cam ring which converts a relative rotation between the cam ring and the follower ring into an axial movement of the cam ring along the support cylinder, biasing means being arranged between the cam ring and the spherical members for applying a force to the spherical members caused by the axial movement of the cam ring and a cap fit over the cam ring, the follower ring and the biasing means in such a way to rotatably couple to the cam ring and axially movably fix the follower ring so that by means of manual rotation of the cap, a relative rotation is caused between the cam ring and the follower ring which in turn axially moves the cam ring to apply the force to the spherical members,wherein the rotatable coupling between the cap and the cam ring comprises a plurality of radially extending tabs on the cam ring which are received in slots formed inside the cap.