Patent ID: 11933372
Assignee: AUTOLIV DEVELOPMENT AB
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 13:
14. 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,
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, and
the engagement and disengagement device further comprises a base provided with an accommodation cavity used to accommodate the first rotating member and the transmission member, and formed with an annular shape such that the accommodation cavity of the base circumferentially encloses the first rotating member and the transmission member, and a cover plate connected to the base to seal the accommodation cavity.