US 11,053,989 B2
Locking device, power assembly, power transmission system, and vehicle
Yanyan Zhu, Shenzhen (CN); Yu Hua, Shenzhen (CN); Jing Liu, Shenzhen (CN); Lingdao Chai, Shenzhen (CN); and Jintao Zhang, Shenzhen (CN)
Assigned to BYD COMPANY LIMITED
Appl. No. 16/475,000
Filed by BYD COMPANY LIMITED, Guangdong (CN)
PCT Filed Dec. 21, 2017, PCT No. PCT/CN2017/117821
§ 371(c)(1), (2) Date Jun. 28, 2019,
PCT Pub. No. WO2018/121420, PCT Pub. Date Jul. 5, 2018.
Claims priority of application No. 201611264018.8 (CN), filed on Dec. 30, 2016.
Prior Publication US 2019/0337383 A1, Nov. 7, 2019
Int. Cl. F16D 27/118 (2006.01); B60K 17/344 (2006.01); B60K 1/02 (2006.01); F16D 11/00 (2006.01); B60K 17/16 (2006.01); B60K 17/08 (2006.01); F16H 57/021 (2012.01)
CPC F16D 27/118 (2013.01) [B60K 1/02 (2013.01); B60K 17/344 (2013.01); B60K 17/08 (2013.01); B60K 17/165 (2013.01); F16D 2011/004 (2013.01); F16H 57/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A locking device, comprising:
a first flange, the first flange being adapted to be fixed on a first shaft;
a second flange, the second flange being adapted to be fixed on a second shaft;
a synchronizing ring, the synchronizing ring being normally connected to the first flange to be adapted to rotate synchronously with the first flange, and the synchronizing ring being slidable relative to the first flange; and
a driving component, the driving component selectively pushing the synchronizing ring to slide from an unlocked position to a locked position in an axial direction of the first flange, wherein when the synchronizing ring is in the locked position, the synchronizing ring is connected to the second flange to be adapted to rotate the second flange synchronously with the first flange, and when the synchronizing ring is in the unlocked position, the synchronizing ring is separated from the second flange, wherein the driving component comprises:
an electromagnet configured to be selectively energized,
an ejector pin, one end of the ejector pin slidably connected to the first flange, and
a V-shaped driving profile, the other end of the ejector pin matched with the V-shaped driving profile, the V-shaped driving profile comprising an opening that in the axial direction of the first flange, increases from one end away from the second flange to one end near the second flange,
wherein when the electromagnet is energized, the ejector pin is configured to move in the axial direction of the first flange through the driving profile and to push the synchronizing ring to slide from the unlocked position to the locked position.