US 12,251,999 B2
Multi-speed electric drive axle using multi-layshaft transmission
Austin R. Gerding, Shelby Township, MI (US); Jason Bock, Sterling Heights, MI (US); Justin Sieferd, Northville, MI (US); Peter Barta, Farmington, MI (US); Mandar Ahir, Canton, MI (US); Jonathan Trim, Madison Heights, MI (US); Shawn S. Proctor, Farmington Hills, MI (US); and Mario Amerla, Macomb, MI (US)
Assigned to AMERICAN AXLE & MANUFACTURING, INC., Detroit, MI (US)
Filed by AMERICAN AXLE & MANUFACTURING, INC., Detroit, MI (US)
Filed on Feb. 15, 2024, as Appl. No. 18/442,425.
Application 18/442,425 is a continuation of application No. PCT/US2023/032865, filed on Sep. 15, 2023.
Claims priority of provisional application 63/442,471, filed on Feb. 1, 2023.
Claims priority of provisional application 63/407,007, filed on Sep. 15, 2022.
Prior Publication US 2024/0309943 A1, Sep. 19, 2024
Int. Cl. B60K 1/00 (2006.01); B60K 17/16 (2006.01); B60T 7/10 (2006.01); F16H 3/02 (2006.01); F16H 37/08 (2006.01); F16H 57/021 (2012.01); F16H 57/037 (2012.01); F16H 57/04 (2010.01); F16H 63/34 (2006.01); B60K 6/36 (2007.10); B60K 6/40 (2007.10); B60K 6/48 (2007.10); B60K 6/547 (2007.10); B60K 17/06 (2006.01); B60K 17/12 (2006.01); F16H 3/08 (2006.01); F16H 3/085 (2006.01); F16H 3/093 (2006.01); F16H 3/095 (2006.01); F16H 57/02 (2012.01)
CPC B60K 1/00 (2013.01) [B60K 17/16 (2013.01); B60T 7/102 (2013.01); F16H 37/0813 (2013.01); F16H 57/021 (2013.01); F16H 57/037 (2013.01); F16H 57/0423 (2013.01); F16H 57/043 (2013.01); F16H 57/0471 (2013.01); F16H 63/3433 (2013.01); F16H 63/3466 (2013.01); B60K 2001/001 (2013.01); B60K 6/36 (2013.01); B60K 6/40 (2013.01); B60K 6/48 (2013.01); B60K 2006/4825 (2013.01); B60K 6/547 (2013.01); B60K 17/06 (2013.01); B60K 17/12 (2013.01); F16H 3/02 (2013.01); F16H 2003/0803 (2013.01); F16H 2003/0818 (2013.01); F16H 3/085 (2013.01); F16H 3/093 (2013.01); F16H 2003/0931 (2013.01); F16H 2003/0936 (2013.01); F16H 2003/0938 (2013.01); F16H 3/095 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02052 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/0034 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An electric drive axle comprising:
a housing assembly having a housing member, the housing member defining a first bearing mount;
an electric motor coupled to the housing assembly and having a motor shaft that is rotatable about a motor axis;
a differential assembly received in the housing assembly, the differential assembly having a differential input member, which is rotatable about an output axis, and a pair of differential output members that are rotatable about the output axis;
a mounting plate coupled to the housing assembly, the mounting plate defining a second bearing mount; and
a transmission received in the housing assembly and transmitting rotary power between the motor shaft and the differential input member, the transmission having a compound gear that includes a layshaft, a first intermediate gear and a second intermediate gear that are coupled to one another for common rotation about an intermediate axis;
a first bearing received in the first bearing mount and supporting a first end of the layshaft for rotation about the intermediate axis relative to the housing member; and
a second bearing mounted in the second bearing mount and supporting a second end of the layshaft for rotation about the intermediate axis relative to the mounting plate;
wherein a lubrication gallery is formed in the mounting plate, wherein the lubrication gallery is in fluid communication with the first and second bearing mounts.