US 11,808,351 B2
Mechanical unlocking mechanism for electronic parking
Defeng Hou, Beijing (CN); Ran Sun, Beijing (CN); and Jianwen Li, Beijing (CN)
Assigned to JING-JIN ELECTRIC TECHNOLOGIES CO., LTD., Beijing (CN)
Appl. No. 17/802,130
Filed by Jing-Jin Electric Technologies Co., Ltd., Beijing (CN)
PCT Filed Apr. 8, 2020, PCT No. PCT/CN2020/083762
§ 371(c)(1), (2) Date Aug. 24, 2022,
PCT Pub. No. WO2021/184454, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 202010186938.2 (CN), filed on Mar. 17, 2020.
Prior Publication US 2023/0076082 A1, Mar. 9, 2023
Int. Cl. F16H 63/34 (2006.01)
CPC F16H 63/3425 (2013.01) [F16H 63/3491 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A mechanical unlocking mechanism for electronic parking, comprising: a parking cam assembly, a pawl assembly, a pull rod assembly and a parking gear;
the parking cam assembly comprises a parking guide shaft and a parking cam, the parking cam is sleeved on the parking guide shaft, at least a first convex part and a second convex part are provided at two sides of the parking cam, and a connecting part is provided on the second convex part;
the pawl assembly comprises a pawl, and one end of the pawl assembly abuts against the first convex part;
the pull rod assembly is connected with the parking cam via the connecting part, and the pull rod assembly pulls the second convex part to drive the parking cam to rotate; and
the parking gear can be fixed or rotatable according to the pawl assembly being in a first position where the parking gear parks in or a second position where the parking gear parks out as the parking cam rotates.