US 11,933,372 B2
Clutch device
Liang Ge, Shanghai (CN); and Licheng Yu, Shanghai (CN)
Assigned to AUTOLIV DEVELOPMENT AB, Vargarda (SE)
Appl. No. 17/904,351
Filed by Autoliv Development AB, Vargarda (SE)
PCT Filed Dec. 25, 2020, PCT No. PCT/CN2020/139591
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/164420, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 202010107880.8 (CN), filed on Feb. 21, 2020.
Prior Publication US 2023/0068207 A1, Mar. 2, 2023
Int. Cl. F16D 41/06 (2006.01); B60R 22/34 (2006.01); F16D 41/067 (2006.01)
CPC F16D 41/06 (2013.01) [B60R 22/34 (2013.01); F16D 41/067 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An engagement and disengagement device, used in a seat belt retractor, comprising:
a first rotating member, capable of being driven to rotate about a rotation axis thereof;
a second rotating member, provided coaxially with the first rotating member, and connected to a reel of the seat belt retractor; and
a transmission member, provided between the first rotating member and the second rotating member, wherein the first rotating member is capable of transmitting, in a first rotation direction, torque to the second rotating member by means of the transmission member,
wherein the transmission member is capable of rotating between an engagement position and a non-engagement position relative to the first rotating member, and when the transmission member is at the engagement position, the transmission member engages with both the first rotating member and the second rotating member such that the first rotating member, the second rotating member, and the transmission member are capable of rotating together, and when the transmission member is at the non-engagement position, the transmission member does not engage with the first rotating member or the second rotating member such that the first rotating member and the second rotating member are capable of rotating freely relative to each other,
and,
the transmission member comprises a holder and a transmission element provided in the holder, and
the engagement and disengagement device further comprises a first elastic component used to elastically hold the transmission element by radially exerting, on the transmission element, a force that enables the transmission element to be located away from the first rotating member or the second rotating member, the first elastic component being integrated on the holder,
wherein the holder has an annular shape, and is rotatably sleeved on the second rotating member.