US 11,841,082 B2
Solenoid actuated locking pawl with compliance mechanism
Tak Man Loui, Richmond Hill (CA); Adrian Cioc, North York (CA); Romulus Crisan, Toronto (CA); Stephen Yang, Toronto (CA); Dusan Milacic, North York (CA); Sean Steele, Mississauga (CA); and Myron Samila, Toronto (CA)
Assigned to Magna Powertrain Inc., Concord (CA)
Appl. No. 17/605,087
Filed by Magna Powertrain Inc., Concord (CA)
PCT Filed May 6, 2020, PCT No. PCT/CA2020/050614
§ 371(c)(1), (2) Date Oct. 20, 2021,
PCT Pub. No. WO2020/227818, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/851,830, filed on May 23, 2019.
Claims priority of provisional application 62/846,169, filed on May 10, 2019.
Prior Publication US 2022/0186831 A1, Jun. 16, 2022
Int. Cl. F16H 63/34 (2006.01)
CPC F16H 63/3425 (2013.01) [F16H 63/3475 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An actuated locking pawl arrangement with a motion compliance mechanism for use with an automotive system comprising:
a rotating hub having a plurality of teeth separated by tooth space between each adjacent pair of the plurality of teeth, wherein each tooth space includes a front tooth profile of one of the plurality of teeth of the adjacent pair of the plurality of teeth and a back tooth profile of a second one of the plurality of teeth of the adjacent pair of plurality of teeth, each front tooth profile of all the plurality of teeth have a first depth angle and each back tooth profile of all the plurality of teeth have a second depth angle, wherein the first depth angle is different from the second depth angle;
a pawl movable between a disengaged position where the pawl is not in contact with the rotating hub, an engaged position where the pawl is in contact with the rotating hub and an intermediate position between the disengaged position and the engaged position;
a locking cam in contact with the pawl, wherein the locking cam moves between a disengaged position such that the pawl is disengaged with the rotating hub, an engaged position such that the pawl is in contact with the rotating hub and an intermediate position between the disengaged position and the engaged position of the locking cam;
an actuator connected to the locking cam, wherein the actuator moves between a retracted position and an extended position;
wherein the motion compliance mechanism is connected between the actuator and the locking cam that allows the actuator to move to the extended position when the locking cam cannot move past the intermediate position, wherein the motion compliance mechanism maintains a force on the locking cam until the rotating hub moves to a position where the pawl moves to the engaged position and the locking cam moves to the engaged position as a result of the force applied by the motion compliance mechanism, and
wherein the actuator is a linear actuator having a shaft that moves linearly between the retracted position and the extended position and the motion compliance mechanism includes a compression spring disposed about the shaft and retained between an upper washer that is fixed to the shaft and a lower washer that is capable of sliding on the shaft so that if the locking cam cannot move past the intermediate position the shaft of the linear actuator will slide through the lower washer and through an aperture in the locking cam to allow the shaft of the actuator to move to the extended position, and the compression spring will become compressed as the shaft slides and the upper washer moves toward the lower washer which is abutted against the locking cam, wherein the compression spring acts on the lower washer to provide the force on the locking cam.