US 12,404,928 B1
Gear unit with built-in parking lock unit
Son Duy Nguyen, Tochigi (JP)
Assigned to GKN Automotive Limited, Birmingham (GB)
Filed by GKN Automotive Limited, Birmingham (GB)
Filed on Nov. 22, 2024, as Appl. No. 18/956,427.
Claims priority of application No. 2024-114561 (JP), filed on Jul. 18, 2024; and application No. 2024-114563 (JP), filed on Jul. 18, 2024.
Int. Cl. F16H 63/34 (2006.01); F16H 37/08 (2006.01); F16H 57/021 (2012.01); F16H 57/037 (2012.01); F16H 57/02 (2012.01)
CPC F16H 63/3425 (2013.01) [F16H 37/0813 (2013.01); F16H 57/021 (2013.01); F16H 57/037 (2013.01); F16H 63/3466 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A gear unit to be used in combination with a power source having a hollow output shaft, comprising:
a differential gear set having a rotation axis in common with the output shaft;
a counter shaft fixedly including a first gear in mesh with the output shaft and a second gear in mesh with the differential gear set, wherein the first gear and the second gear constitutes a reduction gear set, wherein the counter shaft is set off from a reference plane including the rotation axis;
a housing including an outer wall parting the differential gear set and the counter shaft from an exterior;
a parking gear disposed axially opposite to the first gear beyond the second gear and fixed to the counter shaft; and
an actuator configured to create a linear motion along a working axis, the actuator being fixed on the outer wall so as to direct the working axis perpendicular to the rotation axis and set off the working axis from the reference plane in a direction opposite to the counter axis; and
a pawl so pivotally supported by the outer wall as to be pressed by the actuator to engage with the parking gear.