Lock for a motor vehicle

Patent metadata

Field	Value
Publication number	US-2016010363-A1
Application number	US-201414772133-A
Country	US
Kind code	A1
Filing date	Feb 28, 2014
Priority date	Mar 6, 2013
Publication date	Jan 14, 2016
Grant date	—

Abstract

The invention relates to a lock, in particular for a door or opening element of a motor vehicle. In order to avoid the unplanned opening of the lock in the event of a crash, the invention proposes a lock with a locking mechanism comprising a rotary latch, a pawl for locking the rotary latch in a detent position, preferably a blocking lever for blocking the pawl in the detent position and a release lever for opening the locking mechanism, in particular by lifting the blocking lever out of the blocking position. The lock is provided with a rotation-lock device, by means of which an opening process of the locking mechanism caused by momentum or an impact can be prevented or blocked.

First claim

1 . Latch, in particular for a door or flap of a motor vehicle with a locking mechanism comprising a catch, a pawl for locking the catch in a detent position, preferably a blocking lever for blocking the pawl in its detent position and a release lever for opening the locking mechanism in particular by moving the blocking lever out of its blocking position, characterized in that a rotation-lock device is provided that can prevent opening of the locking mechanism resulting from an impact or momentum.

2 . Latch according to claim 1 , characterized in that the rotation-lock device contains one or several blocking fingers and/or limit stops that are, in particular, assigned to the blocking lever and/or release lever and/or are mounted on these.

3 . Latch according to claim 2 , characterized in that the rotation-lock device is designed in such a way that the opening operation is only blocked by the locking mechanism in the event of a movement of the blocking lever caused by impact or momentum.

4 . Latch according to claim 1 , characterized in that the rotation-lock device cannot block the operation during a regular opening and/or closing process of the locking mechanism, in particular, in connection with a respective pivoting of the release lever.

5 . Latch according to claim 2 , characterized in that the rotation-lock device is designed to block the pivoting movement of the blocking lever and preferably in such a way that the blocking fingers and/or limit stops can be engaged after a specified rotation of the blocking lever in opening direction.

6 . Latch according to claim 2 , characterized in that the blocking fingers and/or the limit stops are fixed directly or indirectly on the blocking lever and/or release lever and/or that the limit stops for a single piece with the blocking lever and/or the release lever.

7 . Latch according to claim 2 , characterized in that the blocking finger and/or limit stop provided on the blocking lever is arranged adjacent to a blocking contour section, in particular, on an associated arm of the blocking lever.

8 . Latch according to claim 1 , characterized in that a safety catch device of the latch is provided, having in particular more than one blocking position and in such a way that during excessive acceleration and, in particular, excessive acceleration of the release lever and/or in case of excessive acceleration of an associated handle of a door or flap, the safety catch device can prevent opening of the locking mechanism.

9 . Latch according to claim 8 , characterized in that the safety catch device comprises an inertia lever and a the blocking lever connected to each other in such a way that a not excessively accelerated release lever and/or a not excessively accelerated handle can move the inertia lever together with the blocking lever in order to move the pawl out of its detent position and/or the blocking lever out of its blocking position.

10 . Latch according to claim 9 , characterized in that the rotation-lock device is designed in such a way that the rotation-lock device only blocks a movement of the blocking lever when the blocking device prevents opening of the locking mechanism in the event of an excessively high acceleration or crash acceleration.

11 . Latch according to claim 9 , characterized in that the rotation-lock device is designed in such a way that the blocking lever in the position blocked by the rotation-lock device rests against a sufficiently large contour section of the pawl and preferably in such a way that at least a quarter and preferably at least half of the blocking contour section can engage with the pawl.

12 . Latch according to claim 9 , characterized in that the blocking finger and/or the limit stop are designed as a pin, bolt, stud or similar on the blocking lever and/or release lever and that the blocking finger and/or limit stop preferably extend essentially parallel to an axis of rotation of the blocking lever and/or release lever.

13 . Latch according to claim 1 , characterized in that the rotation-lock device contains a first blocking finger mounted on the blocking lever.

14 . Latch according to claim 13 , characterized in that the rotation-lock device contains a second blocking finger mounted on the release lever.

15 . Latch according to claim 14 , characterized in that the rotation-lock device is designed to block the pivoting movement of the blocking lever in such a way that the first and second blocking fingers can be engaged after a specified rotation of the blocking lever in opening direction.

16 . Latch according to claim 14 , characterized in that the first blocking finger limit stop on the blocking lever is arranged adjacent to a blocking contour section on an associated arm of the blocking lever.

17 . Latch according to claim 14 , characterized in that the first and second blocking fingers are designed as a pin, bolt, stud or similar on the blocking lever and the release lever.

18 . Latch according to claim 17 , characterized in that the first blocking finger extend essentially parallel to an axis of rotation of the blocking lever.

19 . Latch according to claim 18 , characterized in that the second blocking finger extends essentially parallel to an axis of rotation of the release lever.

20 . Latch according to claim 2 , characterized in that the blocking finger and/or the limit stop are designed as a pin, bolt, stud or similar on the blocking lever and/or release lever and that the blocking finger and/or limit stop preferably extend essentially parallel to an axis of rotation of the blocking lever and/or release lever.

Assignees

• Kiekert Ag

Inventors

• Wahmann Hendrik
• Fuchs Carsten
• Eichel Dirk

Classifications

• E05B77/04 Primary

  Preventing unwanted lock actuation, e.g. unlatching, at the moment of collision · CPC title

• E05C3/12

  with latching action (devices in which the securing part is formed or merely carried by a spring and moves only by distortion of the spring, e.g. snaps, E05C19/06; tilt-plate latches E05C19/007) · CPC title

• E05C19/02

  Automatic catches, i.e. released by pull or pressure on the wing (E05C19/06 takes precedence {; with locking means E05B63/22}) · CPC title

• E05B77/06 Primary

  by means of inertial forces · CPC title