公开(公告)号：US20240157909A1

公开(公告)日：2024-05-16

申请号：US18550225

申请日：2022-03-14

Applicant: Autoliv Development AB

Inventor： Philip RINGS ,  Florian KUNZLER

IPC: B60R22/343

CPC classification number: B60R22/343

Abstract: A seatbelt retractor having a toothed control disk on a belt shaft and an electrically actuatable blocking device and a blocking lever mounted in a pivot bearing, wherein the electrically actuatable blocking device stops the control disk with respect to the belt shaft and, as a result, the belt shaft is blocked in the pull-out direction, wherein the blocking lever has a lever arm upon which a first spring acts, which spring preloads into position the blocking lever having an arranged blocking tip so that this blocking tip engages in the toothing of the control disk, and an electromagnet that is arranged in the housing, wherein the blocking tip is retracted from the toothing of the control disk, wherein a second spring rests with its blocking arm against the second spring and is loaded by the blocking arm.

公开(公告)号：US20220332280A1

公开(公告)日：2022-10-20

申请号：US17753661

申请日：2020-09-03

Applicant: AUTOLIV DEVELOPMENT AB

Inventor： Antto-Christian GLAESSER ,  Florian KUNZLER ,  Philip RINGS

IPC: B60R22/343 ,  H01F7/08

Abstract: A belt retractor having an electrically actuatable locking device comprising a housing with a base plate and an upright first limb, a locking lever mounted pivotably on the upright first limb with a steel plate which is spring-loaded, and an electromagnet arranged in the housing and having a coil with a through opening, a first iron core which is arranged in the through opening, when a voltage is applied to the coil, exerts a magnetic force on the locking lever via the steel plate and actuates the locking lever for triggering a locking or unlocking movement against the force of the spring. The movement of the locking lever is enforced by a first magnetic circuit formed by the first iron core, the upright first limb and the portions of the base plate and of the locking lever between the first iron core and the upright first limb.