US 12,421,771 B2
Motor vehicle lock
Thorsten Bendel, Oberhausen (DE)
Assigned to Kiekert AG, Heiligenhaus (DE)
Appl. No. 18/258,342
Filed by KIEKERT AKTIENGESELLSCHAFT, Heiligenhaus (DE)
PCT Filed Dec. 10, 2021, PCT No. PCT/DE2021/100991
§ 371(c)(1), (2) Date Jun. 20, 2023,
PCT Pub. No. WO2022/152343, PCT Pub. Date Jul. 21, 2022.
Claims priority of application No. 10 2021 100 739.9 (DE), filed on Jan. 15, 2021.
Prior Publication US 2024/0035315 A1, Feb. 1, 2024
Int. Cl. E05B 81/82 (2014.01); E05B 47/00 (2006.01)
CPC E05B 81/82 (2013.01) [E05B 47/00 (2013.01); E05B 2047/0097 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A motor vehicle lock comprising:
a lock housing,
a locking mechanism which is arranged in the lock housing and includes a rotary latch and a pawl,
an electromotive drive configured to work on the pawl of the locking mechanism to lift the pawl from engagement with the rotary latch to unlock the locking mechanism,
a lock-side control unit arranged in the housing and configured to select a power supply for providing electrical power to the electromotive drive, wherein the lock-side control unit is electrically connected to a body-side power source for a body-side power supply, and
an emergency power source,
wherein the emergency power source is connected to the lock-side control unit and is electrically independent of the body-side power supply,
wherein during normal operation the lock-side control unit is configured to provide power to the electromotive drive via the body-side power supply,
wherein in the event of a voltage drop or voltage failure of the body-side power supply, the lock-side control unit is configured to switch to the emergency power source such that the emergency power source provides for an emergency electrical power supply of the electromotive drive, and
wherein the emergency power source is removably arranged in the lock housing so as to be replaceable if necessary.