Motor vehicle door lock, particularly a backrest lock on a motor vehicle seat

Patent metadata

Field	Value
Publication number	US-11208015-B2
Application number	US-201615557188-A
Country	US
Kind code	B2
Filing date	Mar 11, 2016
Priority date	Mar 12, 2015
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

The object of the invention is a motor vehicle door lock, particularly a backrest lock (4), on a motor vehicle seat (1). The basic construction of the motor vehicle door lock includes a locking mechanism (7, 8, 9) consisting essentially of a rotary latch (9), a ratchet pawl (7) and a blocking element (8) for the ratchet pawl (7). In addition, a drive unit (15, 16, 17) that acts on a triggering element (12) is provided. According to the invention, the drive unit (15, 16, 17) is constructed as a linear adjustment drive (15, 16, 17), which acts on the triggering element (12) so that it interacts in succession, first with the blocking element (8) and then with the ratchet pawl (7).

First claim

The invention claimed is:

1. A motor vehicle lock for a motor vehicle door or a motor vehicle seat, the motor vehicle lock comprising:
a locking mechanism having a rotary latch, a ratchet pawl that ratchets the rotary latch, and a blocking element for the ratchet pawl;
a triggering element that engages the blocking element and moves the blocking element into a position that releases the ratchet pawl; and
a drive unit that directly acts on the triggering element, wherein the drive unit is constructed as a linear adjustment drive including an electric motor which transmits linear movement to the triggering element whereby the triggering element pivots so that it interacts in succession, wherein the triggering element first makes direct contact with the blocking element to move the blocking element into the position that releases the ratchet pawl, and then continues to move whereby the triggering element subsequently makes direct contact with the ratchet pawl to move the ratchet pawl and release the rotary latch,
wherein the triggering element comprises a triggering pin that first directly contacts the blocking element to move the blocking element into the position that releases the ratchet pawl, and then subsequently, the triggering pin directly contacts the ratchet pawl.

2. The motor vehicle lock according to claim 1 , wherein the drive unit is connected to a lock housing.

3. The motor vehicle lock according to claim 2 , wherein the drive unit is connected to a base, which also supports the sleeve of the Bowden cable.

4. The motor vehicle lock according to claim 1 , wherein the drive unit is located separately from a lock housing and acts on the triggering element via a transmitting element.

5. The motor vehicle lock according to claim 4 , wherein the transmitting element is constructed as a Bowden cable having a sleeve and a core.

6. The motor vehicle lock according to claim 1 , wherein the ratchet pawl and the triggering element are mounted on the same axis on a lock case.

7. The motor vehicle lock according to claim 1 , wherein the triggering pin is arranged in a recess on the ratchet pawl.

8. The motor vehicle lock according to claim 7 , wherein the recess has a “U”-shape.

9. The motor vehicle lock according to claim 7 , wherein the blocking element is provided on the open end of the recess.

10. The motor vehicle lock according to claim 1 , wherein when the triggering pin subsequently directly contacts the ratchet pawl, the triggering pin maintains direct contact with the blocking element whereby the triggering pin has direct contact with each of the blocking element and the ratchet pawl.

11. The motor vehicle lock according to claim 1 , wherein prior to activation of the triggering lever by the drive unit, the triggering lever is in non-contact with the blocking element.

Assignees

• Kiekert Ag

Inventors

• Lambertz Karl
• Toma Tommy
• Hunt Robert J

Classifications

• E05B81/14

  operating on bolt detents, e.g. for unlatching the bolt · CPC title

• B60N2/366 Primary

  characterised by the locking device · CPC title

• E05B79/20

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

• E05B81/28

  Linearly reciprocating elements · CPC title

• E05B81/16

  operating on locking elements for locking or unlocking action · CPC title