DE102018124841A1 - Motor vehicle lock - Google Patents

Abstract

The invention relates to a motor vehicle lock (10) having a locking mechanism (20) with a catch (21) and at least one pawl (22) and a release lever (23), the locking mechanism (20) being at least unlockable by means of the release lever (23) , further comprising a closing means (30), the closing means (30) being able to be brought into contact with the rotary latch (21), whereby the rotary latch (21) can be moved into at least one latching position and an electric drive unit (31) with a worm drive ( 32), wherein the release lever (23) and / or the closing means (30) can be brought into operative connection with the worm drive (32), characterized in that an emergency release means (40) is provided. By actuating the emergency release means (40), the operative connection between the worm drive (32) and the release lever (23) and / or closing means (30) can be released.

Description

The present invention relates to the field of motor vehicle locks, in particular electrically operable motor vehicle locks, and relates to a motor vehicle lock according to independent claim 1.

Motor vehicle locks which have a drive. To have electrical actuation of the lock are generally known from the prior art. From the DE 102 168 45 B4 is a lock for a motor vehicle, which has a drive and a lock mechanism driven by the drive. In addition, the lock has an opening mechanism which can be brought into operative connection with the locking mechanism, the opening mechanism being able to open the lock by means of a cable. By actuating the cable, the pawl of the locking mechanism is lifted off the rotary latch so that the lock is unlocked. Also the DE 10 2015 004 985 A1 has such a motor vehicle lock, a handle element being arranged on the cable pull in addition to the cable pull, whereby a power transmission is to be improved.

A problem with conventional and above-mentioned motor vehicle locks with a mechanical cable actuation is that they are structurally complex and cost-intensive, with a cable and a handle always having to be provided so that the locking mechanism can be unlocked.

There is therefore a need to provide a structurally simple and inexpensive lock that enables manual actuation of the locking mechanism in an emergency.

The object of the invention is to provide an improved motor vehicle lock and in particular a lock with an emergency actuation, the disadvantages known from the prior art being at least partially eliminated. In particular, it is the object of the invention to provide a structurally simple and inexpensive solution for improving a motor vehicle lock with an emergency actuation mechanism.

The above object is achieved by a motor vehicle lock with the features of independent device claim 1.

Further features, details, advantageous developments and improvements of the invention result from the subclaims, the description and the drawings. The features described in the patent claims, the description, the drawings and the subclaims can be combined or varied with one another in any desired, technologically sensible manner and show further refinements of the invention. It is pointed out that the exemplary embodiments described below explain the Invention are not limiting.

According to the invention, the motor vehicle lock, in particular an electrically operable motor vehicle lock, a locking mechanism with a rotary latch and at least one pawl, has a release lever for the locking mechanism, the locking mechanism being at least unlockable by means of the release lever. Furthermore, a closing means is provided, wherein the closing means can be brought into contact with the rotary latch, whereby the rotary latch can be moved into at least one latching position and a drive unit with a worm drive is provided, the release lever and / or the closing means being operatively connected to the worm drive is. An emergency release means is provided according to the invention, the operative connection of worm drive and release lever and or closing means being releasable by means of the emergency release means.

It is therefore an advantage of the embodiment of the motor vehicle lock according to the invention that the operative connection between the worm drive and the release lever and / or closing means can be easily released by the emergency release means, so that the mechanical operative connection is interrupted.

The motor vehicle lock, which is proposed according to the invention, has a rotary latch and at least one pawl, it being possible for the locking mechanism to be unlocked / unlocked by means of a release lever. A closing means can be brought into contact with the rotary latch, whereby the rotary latch can be moved from an open position into a latching position by means of an electric drive / an electric drive unit. The closing means thus enables electromechanical locking of the motor vehicle lock. One can also speak of a closing aid, wherein the electromechanical actuation of the rotary latch in the direction of the latching position can be used to move a movable part of a vehicle, for example a door, flap, tailgate or hood, at least into the closed position by means of the closing means.

If, for example, there is a voltage drop or a power failure of the motor vehicle and thus an electrical power supply to the drive unit for the motor vehicle lock, in particular the closing means, is interrupted, in the prior art the motor vehicle lock can only be unlocked by a cable actuation. According to the invention, an emergency release means is now provided, the operative connection of Worm drive and release lever and / or closing means is releasable. It is therefore no longer necessary for the locking mechanism to be actuated by means of a cable which must be integrated into the lock. Rather, it is possible without great effort to actuate the emergency release means, so that the operative connection between the worm drive and the release lever and / or closing means is released and the locking mechanism can be released or the lock can be completely removed from the moving part or the vehicle.
In particular, the inventive design of a motor vehicle lock, in particular an electrically actuable motor vehicle lock, enables a motor vehicle lock to be opened or unlocked from the outside, ie not directly by the lock-internal actuating lever chain, by simple mechanical actuation of the emergency release means.

The locking mechanism for the locking mechanism can be interrupted on the basis of the feature that an emergency release means is provided, wherein the operative connection of the worm drive and release lever and / or closing means can be released by actuating the emergency release means. The necessary mechanical connection of the worm drive and the release lever and / or closing means can be separated in a simple manner by the emergency release means according to the invention.

In the context of the invention, the closing means can have a first actuating lever and at least one second actuating lever, the actuating levers being releasably connected by means of the emergency release means. The actuating levers of the closing means are preferably operatively connected in a non-positive or positive manner by means of the emergency release means, so that the actuating levers can transmit the force from a drive unit to the closing means and thus to the locking mechanism. If the emergency release means which connects the two actuating levers to one another is now released, the mechanical operative connection to the locking mechanism is interrupted, so that the locking mechanism can be easily unlocked or uncoupled from the locking mechanism. A transmission of force or the action of the closing means on the locking mechanism can thus be interrupted. In an emergency, this power transmission could lead to the locking mechanism and thus the motor vehicle lock not being able to be unlocked or removed. Accordingly, it is not possible for occupants of the vehicle to mechanically actuate the motor vehicle lock in an emergency. According to the invention, this problem can now be remedied by the emergency release.
Furthermore, it is conceivable that the two actuating levers are rotatably connected to one another with the emergency release means.

The emergency release means can advantageously be essentially pin-shaped, the emergency release means having a first connecting end and the two actuating levers being connected to one another in particular in a force-locking manner by means of the connecting end. The connection end is designed such that the first actuation lever and the second actuation lever can be connected to one another in such a way that a mechanical / electromechanical force can be transmitted between the two actuation levers. The connecting end thus extends through the first operating lever into the second operating lever at least in sections. For this purpose, the first and / or second actuating lever can have a receptacle for the connecting end of the emergency release. The emergency release means is preferably designed in the form of a pin. This enables an inexpensive and structurally simple design.

It is furthermore conceivable that the connection end has a thread or is designed as a clip connection or as a snap-in connection. Both a thread, a clip or a snap connection are inexpensive and structurally simple to implement. The thread can be a preferably metric thread, the first and / or second actuating lever in particular having a corresponding thread. Accordingly, the emergency release means can have an external thread and the actuating lever or the actuating lever can have an internal thread or vice versa. It is thus possible in a simple manner to turn the emergency release means out of the actuating lever by means of rotary movements. A clip or snap connection also makes it easy to separate the emergency release means from the actuating lever. The clips or snap-in connection can be released by an appropriate application of force. The clips or snap-in connection can be designed in such a way that there is sufficient actuating force for releasing the clips or snap-in connection that a malfunction and thus an incorrect release of the emergency release means can essentially be prevented.

The first actuating lever can advantageously have at least one recess, in particular a through hole, the second actuating lever having a thread, a clip or latching connection and the emergency release means extending at least in sections through the recess, in particular the through hole, and can be connected to the second actuating lever. Accordingly, the emergency release is only screwed to one connection end. The first actuating lever can thus have only one through hole / recess, the through hole / recess being dimensioned such that at least that Connection end with the thread, the clip or the locking connection can be guided through the first actuating lever. Because the first actuating lever has only one through hole, a particularly cost-effective embodiment can be achieved, so an additional thread on the first actuating lever is not necessary. The emergency solvent, which is in particular pin-shaped, can thus extend through the through-hole / recess through the first actuating lever and can be connected to the second actuating lever at the connection end by means of the thread. This can be an internal thread at the connection end and an external thread on the second actuating lever or vice versa. So that the emergency release can be actuated and thus the operative connection of the worm drive and release lever and or closing means can be released, the emergency release only has to be unscrewed from the first or second actuation lever, for example by a rotary movement, and can then be pulled out through the recess / through hole of the first lever will.

Advantageously, the emergency release means can have an actuation geometry at its second end, the actuation geometry being a regular polygon, in particular a hexagon. The actuation geometry thus has a cross section which can be designed as a regular polygon. This enables a particularly user-friendly and simple handling of the emergency solvent. Sufficient force can be exerted on the emergency release means via the actuation geometry in order to release it from the actuation lever. A regular polygon, preferably a hexagon, is particularly advantageous, and therefore tool use can also be provided accordingly. The tool can be applied to the regular polygon, in particular to the hexagon, so that the emergency solvent can use the tool to separate the active connection. In addition, it is conceivable that the actuation geometry is designed as a knurled nut or knurled screw, so that in the case of a particularly circular pin-shaped configuration, only the actuation geometry is knurled and the actuation geometry can be easily applied with force by hand.

Within the scope of the invention, a lock plate and / or a lock housing can be provided, the lock housing or the lock plate having a recess and the emergency release means extending through the recess at least with the actuation geometry of the second end. Thus, the at least one actuation geometry is accessible from the outside and the operative connection of the worm drive and the release lever and or closing means can be easily released from the outside. It is conceivable that the actuation geometry extends only in sections through the recess of the lock housing or the lock plate. The lock plate or the lock housing can thus have a bore or material recess in which a tool or the hand of a user can be arranged, so that in particular the actuation geometry of the emergency release means can be subjected to a force.

In the context of the invention, it is conceivable that the first and second actuating levers are rotatably connected to one another.

Furthermore, it can be advantageous for the second actuating lever to have an arm for the emergency release means and an arm for the pivot bearing, the two arms of the second actuating lever being designed at an angle to one another. Accordingly, a lever mechanism for the emergency solvent can be provided.

According to the invention, the first actuating lever can be essentially U-shaped. A first arm can be in contact with the emergency release and a second arm can be in contact with the through hole.

Further measures improving the invention result from the following description of some exemplary embodiments of the invention, which are shown schematically in the figures. It should be noted that the figures are only descriptive and are not intended to limit the invention in any way. Embodiments are thus also to be regarded and encompassed by the invention, which are not explicitly shown or explained in the figures, but which emerge and can be generated from the explained embodiments by separate combinations of features. In the figures, the same reference symbols designate the same or functionally identical components, unless stated otherwise.

• 1 eine mögliche Ausführungsform eines erfindungsgemäßen Kraftfahrzeugschlosses und
• 2 eine erfindungsgemäße Ausführungsform eines Kraftfahrzeugschlosses mit zwei möglichen Ausführungsformen eines Notlösemittels.

Show it:

• 1 a possible embodiment of a motor vehicle lock according to the invention and
• 2nd an embodiment of a motor vehicle lock according to the invention with two possible embodiments of an emergency release.

The 1 shows a motor vehicle lock 10th having a locking mechanism 20th with a catch 21 and at least one pawl 22 and a release lever 23 , the trigger lever 23 on a common axis with the pawl 22 stored and connected. Using the release lever 23 is the ratchet 20th , especially the Pawl 22 from the catch 21 unlockable. The motor vehicle lock 10th also has a closing device 30th on, with the closing means in contact with the catch 21 can be brought, which causes the catch 21 is movable into at least one locking position, for example pre-locking and or main locking. In addition, there is an electric drive unit 31 provided which a worm gear 32 has, the trigger lever 23 and or the closing means 30th in active connection with the worm gear 32 is feasible. An emergency solvent according to the invention 40 is in 1 designed as a hexagon pin or pin-shaped screw, and in operative connection with the two actuating levers and the worm gear 32 . The emergency solvent 40 connects the first operating lever 33 with the second operating lever 34 of the closing means 30th . For this, the emergency solvent shows 40 an actuation geometry 43 and at least one connection end 41 on, the connecting end extending through the first actuating lever and at least in sections into the second actuating lever 34 extends.

The castle 10th of the 1 thus includes a closing function, which makes it possible to transfer the lock from an open position and or a pre-locking position into a main locking position or closed position. That is what the drive unit is for 31 provided which with the spindle 36 is operatively connected so that the drive unit 31 the spindle can be rotated. This will make the worm drive 32 along the spindle 36 moved, especially translationally moved. The worm drive 32 is in operative connection with the closing means 30th , especially the first operating lever 33 or second operating lever 34 bringable. In 1 can the worm drive 32 here translationally along the spindle 36 be moved so that the worm drive 32 at least in sections the first or second actuating lever 33 , 34 pivoted or entrained such that the closing means 30th , especially the closing pawl 39 the catch 21 can pivot around its axis. This is the operating lever 33 on a stepped mandrel 37 rotatably mounted. Now the worm drive 32 on the first or second control lever 33 , 34 , becomes a pull latch 39 pivots and then pushes the catch 21 in a pre-locking or main locking position. A lock holder in contact with the catch of a movable part of a vehicle, for example a flap or door, can now be rotated into the catch mouth of the motor vehicle lock by the rotary movement of the catch which could be in contact with the lock holder 10th to be confiscated. The movable part, for example the door or flap, can thus be pulled onto the vehicle body and thus pulled shut.

According to the invention is now an emergency solvent 40 provided that, as already mentioned, the first operating lever 33 and the second operating lever 34 of the pulling means connects to one another in a non-positive and / or positive manner. The emergency solvent 40 is solvable in the first 33 and the second operating lever 34 arranged. About the actuation geometry 43 can the emergency solvent 40 be released so that the operative connection between the first actuating lever 33 and second operating lever 34 is solved. Will the worm drive 32 from the drive unit 31 the worm drive is now converted into a translational movement 32 for example on the first operating lever 33 , because of the by the emergency solvent 40 established operative connection from the first operating lever 33 and the second operating lever 34 , the first operating lever 33 the second operating lever 34 to apply a force or a moment. The second operating lever 34 can now turn a latch 39 apply a force, pulling the latch 39 the catch 21 can pivot into a pre-locking or main locking position. The actuator lever chain 30th can by the emergency solvent 40 to be interrupted. It is therefore possible that the lever chain of the motor vehicle lock is incorrectly positioned 10th by releasing the emergency solvent 40 is interrupted. The pin-shaped and with a hexagon as the actuation geometry 43 trained emergency solvent is in 1 exemplified by a thread at its connection end 41 in the second operating lever 34 screwed in. The first operating lever 33 has a recess for this 35 , for example in the form of through holes 35 so that the threaded portion of the emergency release 40 through the through holes 35 of the first operating lever 33 extends and into a thread of the second operating lever 34 is screwed in. This creates the operative connection between the two actuating levers 33 and 34 by screwing in or unscrewing the emergency solvent 40 can be made or solved.

The first operating lever 33 has a U-shaped section 38 on, being a first arm 38.1 and a second arm 38.2 is provided. The first arm 38.1 of the first operating lever 33 has a first recess 35 on, with part of the emergency solvent on the recess 40 on the first operating lever 33 can support at least in sections. The emergency release extends further along the U-shaped section 38 from the first operating lever 33 , the second arm 38.2 another recess 35 in the form of through holes 35 has, whereby at least one threaded portion of the emergency release can extend through. This threaded section of the emergency solvent 40 is then power and or form-fitting with the second operating lever 34 connectable.

Due to the actuation geometry 43 of the emergency solvent 40 is a loosening and or attaching the emergency solvent, for example screwing the thread of the emergency solvent at the connection end 41 with the second operating lever 34 especially tool going. Thus, in the event of a malfunction of the actuating lever chain of the closing means, it can simply be interrupted or released. Thereupon, it is possible to release the locking mechanism, so that either the lock can be assembled from the moving part or a vehicle, or that the operative connection of the locking mechanism 20th and a lock holder can be released on a moving part or on a vehicle.

In the 2nd is an embodiment of the motor vehicle lock according to the invention 10th shown, the motor vehicle lock 10th , a lock plate 11 and a lock case 12th has, on which on the lock plate 11 a recess 13 is arranged, passing through the recess 13 on the lock plate 11 the emergency solvent 40 extends at least in sections or at least the actuation geometry 43 of the emergency solvent 40 through the recess 13 is achievable.

The motor vehicle lock 10th is in particular an electrically drivable motor vehicle lock, for example for a tailgate or a side door of a vehicle and has a drive a drive unit 31 on which as in 1 shown can drive a worm drive, whereby a closing function for the lock is achieved. The locking device can be on the rotary latch 21 act and twist this from an open position in a pre-locking and or a main locking position.

The lock plate 11 is used for one-sided storage of the locking mechanism, especially the rotary latch 21 and at least one pawl. Furthermore, the lock plate 11 a recess 13 on, with the emergency solvent 40 extends through the recess at least in sections.

Furthermore shows the 2nd possible exemplary embodiments for the design of the emergency solvent 40 . On the one hand, an embodiment of the emergency release is described, the actuation geometry 43 as a Randall geometry or knurled nut 43 is formed, the emergency solvent 40 at a connection end 41 a thread 42 having. The thread section or the thread 42 is with the second operating lever, we in 1 was described, force and or positively connectable. The thread-free section of the emergency release extends at least in sections through the recess of the first actuating lever.

A second embodiment of the emergency solvent 40 shows in the 2nd a pin-shaped configuration, the actuation geometry 43 is designed as a hexagon. Here, too, the emergency solvent 40 at a connection end 41 a thread 42 on. As already described, the threaded section or the thread serves 42 thereby to connect the first actuation lever to the second actuation lever in a force-fitting and / or form-fitting manner. For that the thread 42 of the emergency solvent 40 screwed into a thread, e.g. an external thread or internal thread of the second actuating lever.

Reference list

10th

Motor vehicle lock

11

Lock plate

12th

Lock housing

13

Recess on the lock housing 12th or lock plate 11

20th

Lock

21

Catch

22

Pawl

23

Release lever

30th

Closing means

31

Drive unit

32

Worm drive

33

first operating lever

34

second operating lever

35

Recess / through hole

36

spindle

37

Stepped mandrel

38

U-shaped section

38.1

first arm

38.2

second arm

39

Closing lever

40

Emergency solvent

41

Connection end

42

thread

43

Actuation geometry

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10216845 B4 [0002]
• DE 102015004985 A1 [0002]

Claims (9)

Motor vehicle lock (10) having a locking mechanism (20) with a rotary latch (21) and at least one pawl (22), and a release lever (23), the locking mechanism (20) being at least unlockable by means of the release lever (23), further comprising Closing means (30), wherein the closing means (30) can be brought into contact with the rotary latch (21), whereby the rotary latch (21) can be moved into at least one latching position and an electric drive unit (31) with a worm drive (32), the Release lever (23) and / or the closing means (30) can be brought into operative connection with the worm drive (32), characterized in that an emergency release means (40) is provided, the operative connection of worm drive (32) being actuated by actuating the emergency release means (40). and release lever (23) and / or closing means (30) can be released. Motor vehicle lock (10) according to the preceding claim, characterized in that the closing means (30) has a first actuating lever (33) and at least a second actuating lever (34), the two actuating levers (33, 34) being releasable by means of the emergency release means (40) are connected. Motor vehicle lock (10) according to one of the preceding claims, characterized in that the emergency release means (40) is essentially pin-shaped, having a first connecting end (41), the two actuating levers (33, 34) being connected to one another at least by means of the connecting end (41) are connected. Motor vehicle lock (10) according to one of the preceding claims, characterized in that the connecting end (41) has a thread (42) or is designed as a clip or a snap-in connection. Motor vehicle lock (10) according to one of the preceding claims, characterized in that the first actuating lever (33) has a recess (35), in particular a through hole (35) and the second actuating lever (34) has a thread, the emergency release means (40) at least extends in sections through the recess (35), in particular the through hole (35), and is screwed to the thread (42) of the connecting end (41). Motor vehicle lock (10) according to one of the preceding claims, characterized in that the emergency release means (40) has an actuation geometry (43) at its second end, the actuation geometry (43) being designed as a regular polygon, in particular as a hexagon. Motor vehicle lock (10) according to one of the preceding claims, characterized in that a lock plate (11) and / or a lock housing (12) is provided, the lock housing (12) or the lock plate (11) having a recess (13) and that Emergency release means (40) extends at least with the actuation geometry (43) of the second end through the recess (13). Motor vehicle lock (10) according to one of the preceding claims, characterized in that the first and second actuating levers (33, 34) are rotatably connected to one another. Motor vehicle lock (10) according to one of the preceding claims, characterized in that the first actuating lever (33) is substantially U-shaped.

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