PARK LOCK SYSTEM
A system with a park lock device. In one example, the park lock device includes an actuator shaft that includes a semi-circular cam interface with two lobes and a spring retention flange. The park lock device further includes a spring coupled to the spring retention flange and a cam that is mated with the cam interface.
1 . A park lock device, comprising:
an actuator shaft including:
a semi-circular cam interface with two lobes; and
a spring retention flange;
a spring coupled to the spring retention flange and a cam; and
the cam mated with the semi-circular cam interface.
2 . The park lock device of claim 1 , wherein the actuator shaft includes two gearbox housing interfaces and the semi-circular cam interface and the spring retention flange are positioned axially between the two gearbox housing interfaces.
3 . The park lock device of claim 1 , further comprising a pawl that mates with the cam.
4 . The park lock device of claim 3 , further comprising a pawl shaft with an axial stopper formed therewith.
5 . The park lock device of claim 4 , wherein the pawl shaft is parallel to the actuator shaft.
6 . The park lock device of claim 1 , further comprising a smart actuator rotationally coupled to the actuator shaft.
7 . The park lock device of claim 6 , wherein the smart actuator is configured to send data to a controller that is indicative of a rotational positon of the cam.
8 . The park lock device of claim 1 , wherein the park lock device is included in an electric drive.
9 . A method for operation of a park lock device, comprising:
triggering an actuator in the park lock device; and
engaging the park lock device in response to triggering the actuator;
wherein the park lock device includes:
the actuator;
an actuator shaft including:
a semi-circular cam interface with two lobes; and
a spring retention flange;
a spring coupled to the spring retention flange and a cam; and
the cam mated with the semi-circular cam interface.
10 . The method of claim 9 , wherein the actuator includes an electric motor.
11 . The method of claim 10 , wherein triggering the actuator includes energizing the electric motor.
12 . The method of claim 9 , further comprising sending data indicative of a position of the cam from the actuator to a controller.
13 . The method of claim 9 , further comprising:
a pawl that mates with the cam; and
a pawl shaft coupled to the pawl and including an axial stopper formed therewith.
14 . The method of claim 13 , wherein the actuator shaft includes two gearbox housing interfaces and the semi-circular cam interface and the spring retention flange are positioned axially between the two gearbox housing interfaces.
15 . The method of claim 14 , wherein the pawl shaft is parallel to the actuator shaft.
16 . A park lock device in an electric drive, comprising:
a smart actuator directly rotationally coupled to an actuator shaft that includes:
a semi-circular cam interface with two lobes; and
a spring retention flange;
a coil spring coupled to the spring retention flange and a cam; and
the cam mated with the semi-circular cam interface;
wherein the coil spring is axially captured between the cam and the spring retention flange.
17 . The park lock device of claim 16 , wherein the actuator shaft includes two gearbox housing interfaces and the semi-circular cam interface and the spring retention flange are positioned axially between the two gearbox housing interfaces.
18 . The park lock device of claim 16 , further comprising:
a pawl that mates with the cam; and
a pawl shaft coupled to the pawl and including an axial stopper formed therewith.
19 . The park lock device of claim 16 , wherein the park lock device does not include a position sensor that is external to the smart actuator.
20 . The park lock device of claim 18 , wherein the pawl shaft is parallel to the actuator shaft.