US 12,485,847 B2
Seat belt buckle unit
Christian Gruber, Anzing (DE); Michael Leng, Geltendorf (DE); and Philip Leng, Sielenbach (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Appl. No. 18/546,211
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
PCT Filed Feb. 4, 2022, PCT No. PCT/EP2022/052654
§ 371(c)(1), (2) Date Aug. 11, 2023,
PCT Pub. No. WO2022/171527, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 10 2021 103 334.9 (DE), filed on Feb. 12, 2021.
Prior Publication US 2024/0116473 A1, Apr. 11, 2024
Int. Cl. B60R 22/32 (2006.01)
CPC B60R 22/324 (2013.01) 7 Claims
OG exemplary drawing
 
1. A safety belt lock unit, comprising:
a belt lock;
a belt lock tongue which is connected to a safety belt;
wherein the belt lock has a locking arrangement with a locking means which brings about a positive-locking engagement with the belt lock tongue in a closed state of the safety belt lock unit and which retains the belt lock tongue in the belt lock such that a tensile force which acts on the safety belt is introduced from the belt lock tongue via the locking means into the belt lock;
wherein the belt lock has an unlocking means and wherein the locking means can be brought out of engagement with the belt lock tongue with the unlocking means by applying an unlocking force in order to bring about an open state of the safety belt lock unit in which the belt lock tongue can be pulled out of the belt lock; and
a pressure-relief mechanism disposed between the belt lock tongue and the belt lock, wherein the pressure-relief mechanism moves the belt lock tongue into the belt lock when the belt lock tongue tilts in the belt lock which occurs in an event of a vehicle collision as a result of a tensioning which is triggered by a belt tensioning device of the safety belt, and/or takes up some of a tensile force which is brought about by the belt tensioning device and thereby reduces a pressure on a force transmission between the belt lock tongue and the locking means.