Patent ID: 11958567
Assignee: MOBILETRON ELECTRONICS CO., LTD
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 4:
5. The coaxial mid-drive power device as claimed in claim 1, wherein
the motor base has a motor base tube;
the hollow shaft motor and the reducing structure respectively fit in a left side and a right side in the motor base tube;
a right-end edge of the motor base tube is engaged with a front cover, and a left-end edge of the motor base tube is engaged with a rear cover;
a middle of the rear cover has a left bearing bracket, wherein a left bearing fits in the left bearing bracket;
a right-end and a left-end of the crank spindle respectively penetrate through a center of the front cover and the left bearing.