Patent ID: 9689436
Date: 2017-06-27
CPC Classifications: F16D

Claim:
1. A device including a first rotatable member, a second rotatable member, and a torque limiter for transmitting a torque of a limited value between the first rotatable member and the second rotatable member, the first and second rotatable members being disposed on a common central axial line, the torque limiter comprising: an engagement recess formed in an inner peripheral part of the first rotatable member; a lever member having an intermediate part pivotally attached to the second rotatable member about a rotational center line extending in parallel with the central axial line of the second rotatable member and one end configured to selectively engage the engagement recess; and a tension spring having an end engaged by the second rotatable member and another end engaged by another end of the lever member, the tension spring urging the lever member in a direction to cause the one end of the lever member to engage the engagement recess; wherein the lever member consists of a bell crank, wherein the lever member is provided with a first arm section extending from the intermediate part in a substantially tangential direction of the first rotatable member and including the one end of the lever member and a second arm section extending from the intermediate part substantially in a radial direction of the outer annular member and including the other end of the lever member, wherein the tension spring extends substantially in parallel to the first arm section of the lever member, and wherein the tension spring is disposed between the lever member and the central axial line of the first and second rotatable members.