Actuator for a driveline component

摘要

An actuator with an indexing guide, first and second indexing rings, an actuator output, a spring and a motor. The indexing guide has a first cam. The first indexing ring is slidably mounted to the indexing guide and includes a second cam. The second indexing ring is slidably and rotatably disposed on the indexing guide and has spline teeth, which engage the first cam, and a third cam that engages the second cam. The spring exerts a force onto the second indexing ring that drives the second indexing ring toward the first indexing ring. The motor is configured to reciprocate the first indexing ring so that cooperation between the second and third cams and between the spline teeth and the first cam causes axial and rotational movement of the second indexing ring about an actuation axis.

主权项

1. An actuator (64) comprising:
an annular indexing guide (78) that is disposed along an actuation axis (102), the indexing guide (78) defining a first cam (C1) having a plurality of first cam teeth (152) and a plurality of guide grooves (150), the first cam teeth (152) being spaced circumferentially about the indexing guide (78), the guide grooves (150) being spaced circumferentially about the indexing guide (78) such that each of the guide grooves (150) is disposed between a pair of the first cam teeth (152); a first indexing ring (80) slidably received on the indexing guide (78) for reciprocating motion along the actuation axis (102), the first indexing ring (80) defining a plurality of first spline teeth (184), a first abutment surface (170) and a second cam (C2), the first spline teeth (184) being disposed on an internal surface of the first indexing ring (80) and received in the guide grooves (150), the second cam (C2) being spaced apart from the first abutment surface (170) along the actuation axis (102) and having a plurality of second cam teeth (174); a second indexing ring (82) slidably received on the indexing guide (78) for reciprocating motion along the actuation axis (102), the second indexing ring (82) defining a plurality of second spline teeth (184′) and a third cam (C2′), the second spline teeth being disposed on an interior surface of the second indexing ring (82) and engaging the first cam (C1), the third cam (C2′) being engaged to the second cam (C2); an actuator output (76, 76′); a first spring (88) on a side of the actuator output (76, 76′) opposite the second indexing ring (82), the first spring (88) biasing the actuator output (76, 76′) toward the second indexing ring (82); a motor (90) having a motor output member (212) that is configured to move the first indexing ring (80) along the actuation axis (102) from a first position to a second position, wherein the second spline teeth (184′) are not engaged to the first cam teeth (152) when the first indexing ring (80) is in the first position, and wherein the second spline teeth (184′) are disposed on the first cam teeth (152) when the first indexing ring (80) is in the second position.