Engaging and disengaging device, seat belt retractor, and seat belt assembly
AssigneeAutoliv Development AB
InventorsLiang Ge, Weijing Liu, Jie Wang
Life of this patent
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Abstract
An engagement and disengagement device used in a seat belt retractor includes a first rotating member and a second rotating member configured to be coaxial, and a transmission member disposed between the first and second rotating members. The first rotating member defines an engagement portion on a radial inner surface thereof, and the distance from the engagement portion to an axis of rotation gradually increases in a first direction of rotation. The transmission member can rotate between an engagement position and a non-engagement position relative to the first rotating member.
Claims19
An engagement and disengagement device used in a seat belt retractor, comprising:
- a first rotating member which can be driven to rotate around an axis of rotation;
- a second rotating member, wherein the second rotating member and the first rotating member are configured to be coaxial, and the second rotating member is used to be connected to a reel of the seat belt retractor;
- and
- a transmission member disposed between the first rotating member and the second rotating member, wherein the first rotating member can transmit, in a first direction of rotation, torque to the second rotating member via the transmission member,
- wherein the first rotating member defines an engagement portion on a radial inner surface thereof, the distance from the engagement portion to the axis of rotation gradually increases in the first direction of rotation, and the engagement portion is used to engage with the transmission member;
- and
- wherein the transmission member can rotate between an engagement position and a non-engagement position relative to the first rotating member, wherein 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 can rotate together;
- when the transmission member is at the non-engagement position, the transmission member does not engage with the first rotating member and the second rotating member, such that the first rotating member and the second rotating member can freely rotate relative to each other.
The engagement and disengagement device according to 3, wherein the transmission element is a rolling element.
Dependencies are inferred from the claim text.