IP Library Granted Patent US 12680349
Granted Patent B2
US 12680349 · App. 18/845,180 · Granted Jul 14, 2026

Motor vehicle lock device

Inventor: Jan Zejda (Chrudim, CZ)
Assignee: KIEKERT AKTIENGESELLSCHAFT
E05B77/38E05B85/26E05B83/16
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Quick Facts
Patent No.
US 12680349
App. No.
18/845,180
Granted
Jul 14, 2026
Kind
B2
Abstract

A motor vehicle locking device and, in particular, a motor vehicle door lock and preferably a motor vehicle tailgate lock, which is equipped with a locking mechanism consisting substantially of a rotary latch and a pawl. Furthermore, a locking bolt interacting with the locking mechanism is realized. In addition, a damping element for the locking mechanism and/or the locking bolt. According to the invention, the damping element has at least three stop contours for the rotary latch, the pawl, and the locking bolt.

Claims (19)

1 . A motor vehicle locking device comprising:

a locking mechanism including a rotary latch and a pawl,

a locking bolt interacting with the locking mechanism, and

a damping element for the locking mechanism and the locking bolt,

wherein the damping element has at least three stop contours including a rotary latch stop contour for the rotary latch, a pawl stop contour for the pawl, and a locking bolt stop contour for the locking bolt,

wherein the damping element has a rotary latch arm, a pawl arm, and a locking bolt arm,

wherein the pawl arm extends from a first end of the rotary latch arm and the locking bolt arm extends from a second end of the rotary latch arm,

wherein the second end of the rotary latch arm is opposite the first end of the rotary latch arm, and

wherein the rotary latch stop contour is arranged in the rotary latch arm between the pawl arm and the locking bolt arm and the rotary latch stop contour is configured as an inward arched contour.

2 . The motor vehicle locking device according to claim 1 , wherein the pawl stop contour is arranged on the pawl arm, and the locking bolt stop contour is arranged on the locking bolt arm.

3 . The motor vehicle locking device according to claim 1 , wherein the pawl stop contour and the locking bolt stop contour each have a central damping recess.

4 . The motor vehicle locking device according to claim 1 , wherein the pawl stop contour is prismatic, with a polygonal outer circumference for interaction with a corresponding polygonal recess of the pawl.

5 . The motor vehicle locking device according to claim 1 , wherein the locking bolt stop contour is prismatic, with a trapezoidal outer circumference for engaging with the locking bolt moving against the locking bolt stop contour, the locking bolt being cylindrical.

6 . The motor vehicle locking device according to claim 1 , wherein the locking bolt stop contour and the pawl stop contour form an obtuse angle between them and are each connected on one side to the rotary latch arm with the rotary latch stop contour.

7 . The motor vehicle locking device according to claim 1 , wherein the damping element with the arms and the stop contours is made in one piece from a thermoplastic material.

8 . The motor vehicle locking device according to claim 7 , wherein the thermoplastic material is an elastomeric plastic material.

9 . The motor vehicle locking device according to claim 7 , wherein the thermoplastic material is polyurethane.

10 . The motor vehicle locking device according to claim 1 , wherein the pawl stop contour dampens the pawl and the locking bolt stop contour dampens the locking bolt when the locking mechanism is in a main locking position, and the rotary latch stop contour dampens the rotary latch when the locking mechanism is in an open position.

11 . The motor vehicle locking device according to claim 10 , wherein the rotary latch is spaced apart from the rotary latch stop contour when the locking mechanism is in the main locking position.