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An actuator includes a ball nut, a ball screw, and a ball screw stop. The ball nut is adapted to receive an input torque and in response rotates and supplies a drive force. The ball screw extends through the ball nut and has a first end and a second end. The ball screw receives the drive force from

An actuator includes a ball nut, a ball screw, and a ball screw stop. The ball nut is adapted to receive an input torque and in response rotates and supplies a drive force. The ball screw extends through the ball nut and has a first end and a second end. The ball screw receives the drive force from the ball nut and in response selectively translates between a retract position and a extend position. The ball screw stop is mounted on the ball screw proximate the first end to translate therewith. The ball screw stop engages the ball nut when the ball screw is in the extend position, translates, with compliance, a predetermined distance toward the first end upon engaging the ball nut, and prevents further rotation of the ball screw upon translating the predetermined distance.

대표청구항 ▼

1. An actuator, comprising: a ball nut adapted to receive an input torque and configured, upon receipt thereof, to rotate and supply a drive force, the ball nut comprising a first dog stop;a ball screw extending through the ball nut and having a first end and a second end, the ball screw coupled to

1. An actuator, comprising: a ball nut adapted to receive an input torque and configured, upon receipt thereof, to rotate and supply a drive force, the ball nut comprising a first dog stop;a ball screw extending through the ball nut and having a first end and a second end, the ball screw coupled to receive the drive force from the ball nut and configured, upon receipt of the drive force, to selectively translate between a retract position and a extend position;a stop feature formed on the ball screw; anda ball screw stop mounted on the ball screw to translate therewith, the ball screw stop comprising: a guide member mounted directly on and surrounding the first end of the ball screw;a stop member surrounding the ball screw and spaced apart from the guide member, the stop member including a first end, a second end, an inner surface, and an outer surface, the first end coupled to the guide member, the second end having a second dog stop formed thereon that is configured to mate with the first dog stop, the inner surface defining an opening through which the ball screw extends, a portion of the inner surface having an increased diameter to thereby form a first engagement surface and a second engagement surface, one of the first or second engagement surfaces configured to be selectively engaged by the stop feature, anda spring member coupled to and disposed between the guide member and the stop member,wherein the ball screw stop is configured to: (i) engage the ball nut when the ball screw is in the extend position,(ii) translate, with compliance, a predetermined distance toward the first end upon engaging the ball nut, and(iii) prevent further rotation of the ball screw upon translating the predetermined distance. 2. The actuator of claim 1, wherein the ball screw stop, upon translating the predetermined distance, prevents rotation of the ball nut in one direction while allowing the rotation of the ball nut in an opposite direction. 3. The actuator of claim 1, further comprising: a motor coupled to the ball nut and configured to selectively supply the drive torque thereto. 4. The actuator of claim 3, further comprising: a gear set coupled between the motor and the ball nut.