US 11,952,805 B2
Door lock having energy absorption
Martin Lindmayer, Sulz (DE); Tobias Konrad, Böblingen (DE); and Stefan Ebersohn, Boeblingen (DE)
Assigned to MERCEDES-BENZ GROUP AG, Stuttgart (DE)
Appl. No. 17/285,238
Filed by DAIMLER AG, Stuttgart (DE)
PCT Filed Oct. 9, 2019, PCT No. PCT/EP2019/077389
§ 371(c)(1), (2) Date Apr. 14, 2021,
PCT Pub. No. WO2020/078803, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 10 2018 008 175.4 (DE), filed on Oct. 16, 2018.
Prior Publication US 2021/0372168 A1, Dec. 2, 2021
Int. Cl. E05B 77/38 (2014.01); E05B 81/14 (2014.01); E05B 81/20 (2014.01); E05B 81/06 (2014.01); E05B 81/10 (2014.01)
CPC E05B 77/38 (2013.01) [E05B 81/14 (2013.01); E05B 81/20 (2013.01); E05B 81/06 (2013.01); E05B 81/10 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A door lock arrangement of a vehicle door of a vehicle, the door lock arrangement comprising:
a first closing element arranged in a lock mouth of the vehicle door;
a second closing element arranged on a body of the vehicle, wherein the first closing element and the second closing element are configured to so that the first and second closing elements can be engaged with each other in a positively positive-locking engagement to hold the vehicle door on the body, wherein the lock mouth has a cavity into which the second closing element is inserted when the vehicle door is closed;
a damping device, which absorbs kinetic energy of the vehicle door during a closing movement of the vehicle door within a predetermined limit opening angle of the vehicle door relative to the body and to slow down the closing movement of the vehicle door, wherein the damping device includes an impact element arranged in the lock mouth in a displaceable manner relative to the vehicle door, wherein the impact element is a cylindrical piston; and
an actuator connected to the impact element, wherein the actuator applies, via the impact element, a pre-tensioning force to the vehicle door directed in an opening direction of the vehicle door relative to the body while the first and second closing elements are engaged with each other, wherein the actuator is an electric motor combined with a spring element.