Over-running decoupler with torque limiter

摘要

A method for producing an over-running decoupler that is configured to transmit rotary power between a rotary member and a hub. The over-running decoupler includes a one-way clutch having a clutch spring, a carrier that is coupled to the clutch spring and at least one spring that resiliently couples the carrier to the hub. The method includes: establishing a desired fatigue life of the at least one spring; establishing a design deflection of the at least one spring during resonance, wherein deflection of the at least one spring at the design deflection during resonance does not reduce a fatigue life of the at least one spring below the desired fatigue life; and preventing resonance in the over-running decoupler by controlling a maximum deflection of the at least one spring such that the maximum deflection is less than or equal to the design deflection.

主权项

1. A method for producing an over-running decoupler that is configured to transmit rotary power between a rotary member and a hub, comprising:
providing a one-way clutch having a wrap spring, and a carrier that is coupled to the wrap spring; providing at least one isolation spring that resiliently couples the carrier to the hub; controlling a maximum deflection of the at least one isolation spring, wherein below the maximum deflection during relative rotation is a first direction between the rotary member and the hub, the one-way clutch couples the rotary member and the hub, and wherein upon reaching the maximum deflection during relative rotation in the first direction an end of the wrap spring engages a limit surface on one of the rotary member and the hub to prevent radial expansion of the wrap spring clutch to limit torque transfer between the rotary member and the hub, and wherein during relative rotation in a second direction between the rotary member and the hub, the one-way clutch decouples the rotary member and the hub.