Motor vehicle lock

Patent metadata

Field	Value
Publication number	US-2016258194-A1
Application number	US-201615053142-A
Country	US
Kind code	A1
Filing date	Feb 25, 2016
Priority date	Mar 6, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

Described is a vehicle lock, wherein a catch and a pawl are provided, wherein the catch may be brought into holding engagement with a lock striker, wherein the pawl may be brought into an engagement position, wherein the pawl is deflected into a release position, wherein an actuation lever is provided for deflecting the pawl into the release position, wherein a switchable lock arrangement is provided in an actuation drive train between the actuation lever and the pawl, wherein an actuation movement of the actuation lever deflects the pawl and, a drive train component of the actuation drive train is decoupled from the pawl for letting the actuation movement of the actuation lever run free without deflecting the pawl or a drive train component is blocked for blocking an actuation movement of the actuation lever, wherein a predetermined crash condition switches the switchable lock arrangement to the locked state.

First claim

1 . A motor vehicle lock for a motor vehicle door arrangement, wherein a catch and a pawl, which is assigned to the catch, are provided, wherein the catch can be brought into an open position and into a closed position, wherein the catch, which is in the closed position, is or may be brought into holding engagement with a lock striker, wherein the pawl may be brought into an engagement position, in which it is in blocking engagement with the catch, wherein the pawl may be deflected into a release position, in which it releases the catch, wherein an actuation lever is provided for deflecting the pawl into the release position, wherein a switchable lock arrangement is provided in an actuation drive train between the actuation lever and the pawl, wherein the switchable lock arrangement may be brought into a “locked state” and into an “unlocked state”, wherein the locked state and the unlocked state of the switchable lock arrangement are stable, wherein, with the switchable lock arrangement being in the unlocked state, an actuation movement of the actuation lever deflects the pawl and, with the switchable lock arrangement being in the locked state, a drive train component of the actuation drive train is decoupled from the pawl for letting the actuation movement of the actuation lever run free without deflecting the pawl or a drive train component is blocked for blocking an actuation movement of the actuation lever, wherein a predetermined crash condition switches the switchable lock arrangement to the locked state, wherein the switchable lock arrangement is a user-switchable central lock arrangement.

2 . The motor vehicle lock according to claim 1 , wherein the drive train component is the actuation lever.

3 . The motor vehicle lock according to claim 1 , wherein the predetermined crash condition is based on a rapidity threshold with regard to the actuation movement of the actuation lever.

4 . The motor vehicle lock according to claim 3 , wherein the switchable lock arrangement is switched to the locked state on the predetermined crash condition by engaging a central locking lever of the switchable lock arrangement.

5 . The motor vehicle lock according to claim 1 , wherein an inertial lever is provided, which inertial lever is coupled with the actuation lever such that actuation of the actuation lever actuates the inertial lever.

6 . The motor vehicle lock according to claim 5 , wherein the inertial lever is configured to engage the central locking lever for switching the central locking is lever to the locked state on actuation of the pawl actuation lever during the crash condition.

7 . The motor vehicle lock according to claim 5 , wherein the inertial lever is pivotably coupled to the actuation lever.

8 . The motor vehicle lock according to claim 7 , wherein the inertial lever pivot axis is arranged on the actuation lever between the pawl actuation pivot axis and an engagement point of the actuation lever, wherein a door handle, in particular an outer door handle, is coupled to the actuation lever at the engagement point for causing the actuation movement of the actuation lever.

9 . The motor vehicle lock according to claim 5 , wherein the inertial lever can be brought into an engagement position in which the inertial lever engages the switchable lock arrangement, in particular the central locking lever, and switches the switchable lock arrangement to the opening state on actuation of the pawl actuation lever during the crash condition.

10 . The motor vehicle lock according to claim 9 , wherein the inertial lever can be brought into the engagement position from the free-running position and vice versa via a pivoting movement.

11 . The motor vehicle lock according to claim 9 , wherein the inertial lever is arranged such that increasing rapidity of the actuation movement of the actuation lever.

12 . The motor vehicle lock according to claim 11 , wherein the inertial lever has an inertial characteristic which is configured to move or hold the inertial lever to is or at the engagement position when the actuation movement of the actuation lever surpasses the rapidity threshold.

13 . The motor vehicle lock according to claim 5 , wherein the actuation lever is pre-stressed to an actuation lever rest position and that a reset contour is provided which is configured to engage the inertial lever when the actuation lever is in the actuation lever rest position and to force the inertial lever to the engagement position.

14 . The motor vehicle lock according to claim 13 , wherein during a return movement of the actuation lever to the actuation lever rest position after the actuation movement of the actuation lever the switchable lock arrangement remains in its state.

15 . The motor vehicle lock according to claim 1 , wherein the motor vehicle lock comprises a central locking drive with a central locking motor for switching the switchable lock arrangement between the locked state and the unlocked state.

16 . The motor vehicle lock according to claim 4 , wherein the motor vehicle lock arrangement comprises a central lock actuation element for engaging the central locking lever and switching the switchable lock arrangement to the locked state, wherein the central lock actuation element can be actuated by a user for switching the switchable lock arrangement to the locked state.

17 . The motor vehicle lock according to claim 5 , wherein the inertial lever is configured for engaging the switchable lock arrangement and switching it to the locked state on actuation of the actuation lever during the crash condition.

18 . The motor vehicle lock according to claim 7 , wherein the inertial lever is configured for pivoting around a inertial lever pivot axis and is coupled to the actuation lever at the inertial lever pivot axis, in particular, wherein the actuation lever is configured for pivoting around a pawl actuation pivot axis, which pawl actuation pivot axis is offset from the inertial lever pivot axis.

19 . The motor vehicle lock according to claim 9 , wherein the inertial lever can be brought into a free-running position in which the inertial lever runs free without engaging the switchable lock arrangement, in particular, wherein the inertial lever is brought into the free-running position on actuation of the actuation lever in the absence of the crash condition.

20 . The motor vehicle lock according to claim 10 , wherein the inertial lever is pre-stressed, in particular spring-biased, toward the free-running position.

Assignees

• Brose Schliesssysteme Gmbh

Inventors

• Rosales David
• Wittelsbuerger Michael
• Hanke Stepan

Classifications

• E05B81/16

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

• E05B77/06 Primary

  by means of inertial forces · CPC title

• E05B77/12

  Automatic locking or unlocking at the moment of collision · CPC title

• E05B79/10

  Connections between movable lock parts · CPC title

• E05B85/26

  Cooperation between bolts and detents · CPC title