Lock for a motor vehicle

Patent metadata

Field	Value
Publication number	US-11920384-B2
Application number	US-201917043312-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Apr 20, 2018
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

A lock for a motor vehicle, in particular a side door lock, comprising a locking mechanism having a rotary latch and at least one locking pawl, an actuating level chain with at least one actuating level and a release lever, wherein a blocked locking mechanism can be unblocked by means of the release lever, and a coupling element between the actuating lever and release lever, wherein the coupling element can be actuated by means of a mass inertia element which is mounted in the motor vehicle lock, and wherein the mass inertia element can be stored in the motor vehicle lock by means of a plastic mandrel.

First claim

The invention claimed is:

1. A lock for a motor vehicle, the lock comprising:
an actuating lever chain having at least one actuating lever, wherein the actuating lever is configured to unblock a locking mechanism of the motor vehicle from a blocked position;
a mass inertia element mounted in the lock; and
a plastics mandrel mounted in the lock, wherein the plastic mandrel includes an arm extending outward from the plastics mandrel which interacts with a recess in the mass inertia element and a joining face, wherein the arm and the joining face are arranged for sandwiching the mass inertia element between the joining face and the arm when the mass inertia element is attached to the plastics mandrel, wherein the mass inertia element is mounted in the lock by the plastics mandrel, wherein the joining face is configured so that a spring preload is introduced into the mass inertia element toward the arm to press the mass inertia element into direct contact with the arm,
wherein the joining face has a planar surface,
wherein the plastics mandrel further includes a plurality of flexible tabs molded into the joining face that protrude beyond the planar surface of the joining face, when the mass inertia element is not mounted on the plastics mandrel, and
wherein the flexible tabs each includes a spherical surface that is configured to provide the spring preload into the mass inertia element.

2. The lock for the motor vehicle according to claim 1 further comprising a housing, wherein the plastics mandrel extends through at least part of the housing, and wherein a part of the plastics mandrel extending through the housing is connected to the housing by a forming method.

3. The lock for the motor vehicle according to claim 2 , wherein the part of the plastics mandrel extending through the housing is ultrasonically welded to the housing.

4. The lock for the motor vehicle according to claim 1 , wherein the plastics mandrel has at least one joining face for accommodating the mass inertia element.

5. The lock for the motor vehicle according to claim 1 , wherein the plastics mandrel is frictionally, form-fittingly or integrally connected to the mass inertia element.

6. The lock for the motor vehicle according to claim 1 , wherein the mass inertia element has at least one recess which corresponds to the plastics mandrel.

7. The lock for the motor vehicle according to claim 1 , wherein the plastics mandrel is guided through the mass inertia element.

8. The lock for the motor vehicle according to claim 1 , wherein the plastics mandrel is latched to the mass inertia element via a bayonet catch.

9. The lock for the motor vehicle according to claim 1 , wherein the mass inertia element is made at least in part from a plastics material.

10. The lock for the motor vehicle according to claim 1 , wherein the plastics mandrel is formed as a one-piece plastics injection-molded part.

11. The lock for the motor vehicle according to claim 1 , wherein the spring preload is introduced into the mass inertia element by at least one tab molded into the joining face.

12. The lock for the motor vehicle according to claim 11 , wherein the at least one tab includes at least two tabs that are inserted into the joining face symmetrically.

13. The lock for the motor vehicle according to claim 11 , wherein the at least one tab extends radially outward in the joining face from a central axis.

14. The lock for the motor vehicle according to claim 11 , wherein the at least one tab, at least in a region of a contact face on the mass inertia element, have a radius.

15. The lock for the motor vehicle according to claim 11 , wherein the joining face includes two or more tabs.

16. The lock for the motor vehicle according to claim 14 , wherein the at least one tab is configured to have a spherical shape to reduce an area of the contact face.

17. The lock for the motor vehicle according to claim 14 , wherein the region of the contact face is formed as a line or point contact between the at least one tab and the mass inertia element.

18. The lock for the motor vehicle according to claim 1 , wherein the flexible tabs each includes a radially outer end on which the spherical surface is located and the spherical surface extends from the radially outer end to provide the spring preload.

Assignees

• Kiekert Ag

Inventors

• Fuchs Carsten
• Handke Armin
• Nowak Johannes

Classifications

• E05B79/08 Primary

  Mounting of individual lock elements in the lock, e.g. levers · CPC title

• E05B77/06

  by means of inertial forces · CPC title

• E05B79/20

  using flexible connections, e.g. Bowden cables · CPC title

• E05B2015/041

  loaded perpendicular to cylinder axis · CPC title