EP2964859B1 - Lock for a motor vehicle - Google Patents

Description

The invention relates to a lock for a motor vehicle according to the preamble of claim 1.

A lock for a motor vehicle includes a locking mechanism with a rotatably mounted rotary latch for receiving a locking bolt, which is also called lock holder. The locking mechanism further has a pawl with which the catch can be latched for holding the locking bolt.

The catch of a motor vehicle lock usually has a bifurcated inlet slot formed by load arm and catching arm (also called infeed mouth) into which the locking bolt of a vehicle door or flap, for example bonnet or boot lid, arrives when the door or flap is closed. The locking pin or lock holder then rotates the catch from an open position towards the closed position until the pawl locks the catch. This position is called detent position. The locking bolt can then not leave the inlet slot of the rotary latch.

A lock may also include a blocking lever capable of blocking the pawl in its detent position. The blockage lever must be pivoted out of its blocking position or turned out so that the pawl can leave its locking position for opening the locking mechanism.

There are locks in which the catch is able to initiate an opening moment in the pawl when it is in its detent position. In such a lock a blocking lever is required to lock the locking mechanism can. Such locks can be opened with little effort.

There are motor vehicle locks with two detent positions, namely a pre-detent position and a main detent position. The pre-detent position serves to intercept the corresponding door or flap if it does not reach the main detent position when closing. If the rotary latch is rotated further starting from the pre-latching position, this finally reaches the main latching position.

A lock basically has a release lever that is operated to open or unlatch a ratchet. Such a trigger lever is typically connected to a handle of a door or flap. If the handle is pressed, the release lever is actuated or pivoted to detent the locking mechanism and thus to open the lock.

In the event of a crash, the handle can be operated unscheduled, which would lead to an opening of the locking mechanism. It should be ensured that such a lock then does not open unplanned.

To ensure that a lock does not open unscheduled in a crash, is in accordance with the document EP 1518983A2 a lock provided with a locking mechanism, which comprises at least one actuating lever for triggering or opening the locking mechanism, that is, a release lever. The lock further includes a locking lever which blocks the operating lever at predetermined vehicle accelerations.

In the event of a crash, particularly high accelerations occur in comparison with a conventional opening. Blocks the operating lever only at high vehicle accelerations, as they occur in a crash, so accidental opening of the locking mechanism in the event of a crash can be prevented. In the case of a usual operation of the Door handle, the operating lever is not blocked for lack of high acceleration, then to allow an opening of the lock.

The publication DE102011010816A1 discloses a motor vehicle door lock, which is equipped with a locking mechanism 1, 2, 3, further with a working on the locking mechanism 1, 2, 3 operating lever mechanism with a release lever 4, and with a locking lever 10. The locking lever 10 blocks the locking mechanism 1, 2, 3 at least when occurring acceleration forces of predetermined size, for example in an accident (crash case).

Further, to the publications DE102011010797A1 . DE102011010815A1 . US5865481A and EP1518983A2 pointed.

The invention has for its object to improve a lock and further, in particular such that in the event of a crash unplanned opening is avoided.

The object is achieved by a lock according to claim 1. Advantageous developments and refinements emerge from the subclaims.

It is a lock, 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 locking position, preferably a blocking lever for blocking the pawl in its latching position and a release lever for opening the locking mechanism in particular provided by a lifting of the blocking lever from its blocking position. The lock comprises a locking device which comprises a blocking position, such that the locking device is able to prevent the locking of the locking mechanism in the event of excessive acceleration, in particular of the release lever and / or an associated handle of a door or flap. The lock further comprises an anti-rotation device, which is able to prevent a shock-related or pulse-related opening operation of the locking mechanism.

Essential is the consideration to provide an anti-rotation, by which a shock-related or pulse-induced opening operation of the locking mechanism can be prevented, preferably by appropriate intervention can be blocked. When preventing rotation, a blocking finger or locking stop the blocking lever and a locking finger or locking stop are assigned to the release lever, the rotation is such that the rotation only locks a movement of the blocking lever, if the locking device at excessive acceleration or crash acceleration, the opening of the locking mechanism prevented. According to the invention prevents in this position, the rotation of the lifting of the blocking lever from its blocking position by pushing the locking finger or locking stop of the blocking lever against the locking finger or locking stop of the release lever, such a blockade does not take place when the trigger lever is in a different position.

The rotation is then such that the occurring in particular in the event of a crash excessive acceleration, which can affect especially as pulses or shocks on the locking mechanism, do not cause the locking mechanism, for example, even without contact of the release lever automatically due to inertia solves. This makes it possible to prevent a crash-induced or shock-related opening of the locking mechanism.

In a preferred embodiment of the invention, the anti-rotation comprises a plurality of locking fingers and / or locking stops. According to the invention, a locking finger or locking catch are assigned to the blocking lever and a locking finger or locking stop to the triggering lever in the rotation. Basically, the locking fingers and / or locking stops as pins, bolts, pins o. The like. Be configured. As a result, the rotation can be provided in a space-optimized manner at the castle.

In a particularly preferred embodiment, the anti-rotation is such that a blocking of the opening process of the ratchet takes place exclusively in a shock-related or pulse-induced movement process of the blocking lever. Alternatively or In addition, the rotation in a regular opening and / or closing operation of the locking mechanism, in particular in a corresponding rotation of the release lever, expediently cause no blocking. In that regard, the functionality of the lock is ensured in regular use. The lifting of the blocking lever to open the locking mechanism and the collapse of the blocking lever to block the locking lever are still guaranteed in this way. Preferably, the rotation is designed for blocking the rotational movement of the blocking lever, preferably in such a way that locking fingers and / or locking stops can be brought into engagement in the opening direction from a predetermined rotation of the blocking lever. The arrangement of the rotation is then made such that the one or more locking fingers and / or locking stops engage only from a predetermined rotation of the blocking lever. The blocking lever can therefore be locked from a certain rotation or a Leerhub to prevent unwanted opening operation of the locking mechanism. In that regard, a shock-related or impulse-related movement process of the blocking lever can be reliably locked, the idle stroke improves the functionality for a regular opening and closing of the locking ensures.

In order to enable a manufacturing technology favorable production, the rotation, for example in the form of locking fingers and / or locking stops can be directly or indirectly attached to the blocking lever and / or release lever. Alternatively or additionally, the locking fingers and / or locking stops can be designed in one piece with the blocking lever and / or release lever.

Particularly advantageously, provided on the blocking lever locking finger and / or locking stop is arranged adjacent to the blocking contour section. Preferably, the locking finger and / or locking stop is then located on the arm of the blocking lever which is associated with the blocking contour section. As a result, an improved stability and direct introduction of force for the engagement of the rotation can be realized to block an opening process. In particular, the arrangement is such that, viewed in the opening direction of the blocking lever, the locking finger and / or blocking stop is arranged in front of the arm of the blocking lever.

According to a further aspect of the invention, a lock is provided with a locking mechanism comprising a catch and a pawl for locking the catch. The lock further includes a blocking lever which is capable of blocking the pawl when it does is in its rest position. In addition, there is a release lever for opening or releasing the locking mechanism. When the release lever is actuated, the blocking lever is thereby moved out of its blocking position if the release lever is not accelerated excessively. If excessively high accelerations of the release lever occur, as can be caused by a crash, then a locking device of the lock prevents the release lever from being able to move the blocking lever out of its blocking position. Therefore, the lock can not open if the release lever in the event of a crash is accelerated accordingly strong.

In one embodiment, the locking device comprises at least two locking positions. Is the locking device in a first blocking position, for example as a result of an excessively accelerated release lever, in particular caused by an impact in a crash, and releases the locking device from the first locking position, for example due to a rebound, in particular delayed and / or repeated rebound Thus, the locking device can continue to avoid by taking a second or further blocking position that the locking mechanism opens, so in one embodiment, the release lever moves the blocking lever out of its blocking position. The provision of a locking device with at least two locking positions consequently prevents unscheduled opening of the lock in the event of a crash, even if rebound effects occur.

The locking device in one embodiment comprises an inertia lever and a locking lever. Inertial lever and locking lever are connected together so that the inertia lever is moved together with the locking lever by the release lever only when the release lever is accelerated in the usual manner, as in a usual operation of the door handle is the case. In such a case, the joint movement of the inertia lever and locking lever takes place in such a way that the locking lever can not prevent the opening of the locking mechanism. When a handle of a door or flap is actuated by a user of the vehicle, the handle and associated trip lever are generally not excessively accelerated.

In one embodiment of the invention, the inertia lever and locking lever are connected to each other so that when strongly accelerated release lever or greatly accelerated grip a door or flap, as
in a crash is possible due to the inertia of the inertia lever only
the locking lever is moved in one of the blocking positions of the locking device, which blocks further pivoting of the release lever or the handle such that an opening of the locking mechanism is avoided.

In one embodiment of the invention, the locking means comprises a spring which interconnects the inertia lever and the lock lever so that the inertia lever is moved together with the lock lever by the release lever only when the release lever is accelerated in a conventional manner. In a technically simple way so avoided that a lock is able to open unintentionally in a crash.

One leg of the spring is connected in one embodiment of the invention with the inertia lever. Such a connection is in particular present when the leg of the spring is preferably biased against a contour of the inertia lever. Another leg of the spring is connected to the locking lever. Such a connection is present in particular when the leg of the spring preferably biased against a contour of the locking lever. At low accelerations, the spring acts as a rigid connection between the locking lever and the inertia lever. At low accelerations therefore locking lever and inertia lever are moved together by pressing the release lever for opening the locking mechanism.

During high acceleration, due to the inertia of the inertia lever, the spring is deformed so that only the locking lever is moved, but not the inertia lever. In particular, the spring is further biased at a correspondingly strong acceleration. If the locking lever is moved independently of the inertia lever, then the locking lever then enters its position locks. In the blocking position it is prevented that the release lever can be further rotated in such a way that this causes an opening of the locking mechanism.

In one embodiment, the locking lever comprises a driver that can be moved by the release lever for moving the locking lever. If the release lever is actuated, the driver and thus the locking lever are moved.

Preferably, the catch of the locking lever passes through a slot of the inertia lever, so as to allow a relative movement between the locking lever and the inertia lever.

In one embodiment, the mass of the inertia lever is several times greater than the mass of the locking lever so as to achieve reliable, that the inertia lever is moved only at low accelerations of the release lever. Preferably, the mass of the inertia lever is two times, preferably three times, more preferably four times greater than the mass of the locking lever.

In one embodiment, the lock has a locking contour, which is rigidly connected to a lock case of the castle. The locking contour is used to lock the locking lever when the release lever is accelerated excessively. If the locking lever is locked by the locking contour and thus is in its blocking position, the release lever can not be further rotated so that thereby the locking mechanism is opened.

In one embodiment, the locking contour is arranged flat against the inner wall of the lock case to transmit the impact forces in the attack of the locking lever to the locking contour on the lock case. The blocking contour can be dimensioned so small.

In one embodiment, the locking lever is connected to the inertia lever so that a projection of the locking lever adjacent to the outer contour of the inertia lever at not excessive acceleration of the trigger lever or handle, to that portion of the outer contour of the inertia lever, which when pivoting for opening a still locked in locking position locking the locking contour faces and / or maximum distance from the axis of the inertia lever has. Due to the small distance between locking lever and locking contour with locked locking mechanism, a particularly rapid locking of the locking mechanism by the locking device in the event of a crash and rebound can be effected.

In one embodiment, the locking contour has an arc whose center corresponds to the axis of the inertia lever. Preferably, the radius of the arc is greater by a gap width than the maximum distance of the outer contour of the inertia lever from the axis thereof. Due to the small distance between the locking lever and Lock contour with locked locking mechanism, a particularly rapid locking of the locking mechanism by the locking device in the event of a crash and rebound can be effected.

In one embodiment, the locking lever at the one end has a projection which faces radially outward with respect to the axis of the inertia lever. If the locking lever is moved relative to the inertia lever due to excessive acceleration of the release lever and / or handle, so the projection in the direction of the locking contour or is facing the locking contour and ensures that the locking lever is held securely in a locking position in the locking contour , This helps to provide a plurality of blocking positions in a technically simple manner.

In one embodiment, the locking contour comprises a stop and / or at least one recess for locking the locking lever when the trigger lever and / or handle is excessively accelerated. The recess or the recesses are preferably arranged counter to the clockwise starting from the stop in the circumferential direction of the inertia lever. A blocking position of the locking device or the locking lever can be determined by the stop or the recess or recesses. First, to provide a stop and then at least one recess, is particularly material-saving.

Setting a blocking position by, for example, a stop or a recess means that a blocking position is then occupied by the locking device when the stop or the recess by blocking or blocking the locking lever are able to prevent unscheduled opening of the lock.

Especially with rebound effects, it may happen that the locking lever unintentionally releases from the blocking position at the stop of the blocking contour. The inertia lever may then move counterclockwise and cause the ratchet to open unscheduled. A recess, which is preferably arranged in the circumferential direction of the inertia lever counterclockwise, allows a renewed engagement or locking of the locking lever and thus avoiding unscheduled opening of the locking mechanism in the case of rebound effects.

In one embodiment, a recess of the locking contour is formed triangular. Due to the triangular configuration of a recesses a self-centering when locking the projection of the locking lever is effected in the recess and allows a particularly high reliability of the locking device.

In one embodiment, the locking lever has a triangular-shaped projection with bevels on both sides, wherein the counter-clockwise slope has a smaller pitch than the other opposite slope of the projection, which is arranged in a clockwise direction about the axis of the locking lever. Due to the different slopes of the slopes of the projection, a particularly secure hold of the locking device or the projection of the locking lever in the blocking positions can be effected in the event of a crash.

In one embodiment, a recess of the locking contour is adapted to the projection of the locking lever in the locking position, which is defined by the recess. In particular, this adjustment takes place in the overlapping area. Preferably, such an adjustment includes the slopes of the slopes of the Tab of the locking lever with a. The adaptation of the contour of a recess of the locking contour to the contour of the projection of the locking lever in the region of the overlap causes a particularly secure hold against bilateral pivoting and thus avoids unscheduled release of the locking device and possible damage to the locking mechanism.

In one embodiment, the stop comprises a bevel of the blocking contour,
which is substantially parallel to the slope of the projection of the locking lever in the locking position, which can come in case of locking of the locking mechanism by the locking means in contact with the stop. Due to the substantially parallel shaped bevels can be made smaller by the flat power receiving the stop and the projection.

In one embodiment, the axis of the locking lever is disposed on the projection opposite end of the locking lever. Due to the arrangement of the axis in preferably the greatest possible distance from the projection, a particularly large pivoting of the projection of the locking lever when actuated by the lever arm of the release lever can be realized and thanks to the thus obtained overlap of the projection in the locking contour a particularly secure hold of the locking device are effected in the blocking position ,

According to the invention the rotation is such that the rotation only locks a movement of the blocking lever when the locking device prevents the opening of the locking mechanism with excessive acceleration or crash acceleration. This ensures in an improved manner that the shocks or pulses occurring in particular in the event of a crash do not cause the locking mechanism to open. Anti-twist device and locking device are preferably functionally connected via the common release lever. The release lever may accordingly have a locking finger and / or locking stop for the rotation and be coupled to the locking lever and / or inertia lever of the locking device. In that regard, a particularly safe and reliable lock is provided by the coupling of the rotation with the locking device.

Particularly advantageously, the rotation is designed so that the blocking lever is in the locked by the rotation locked position with a sufficiently large blocking contour portion of the pawl, preferably such that the blocking contour section at least a quarter, more preferably at least half, with the pawl can be brought into engagement. This results in a correspondingly large stop between the blocking contour section of the blocking lever and the pawl. As a result, sufficient locking of the blocking lever with the pawl can be ensured even in the locked position of the rotation, so that the locking mechanism is protected against shocks or pulses, especially in crash accelerations and prevents unwanted opening of the locking mechanism.

Preferably, the locking finger and / or locking stopper is configured as an outstanding pin, pin, pin or the like on the blocking lever and / or triggering lever. Advantageously, the locking finger and / or locking stop extends substantially parallel to the axis of rotation of the blocking lever and / or release lever. This allows a compact and reliable with the pivoting about a rotational axis effected rotation.

• Fig. 1 den Aufbau eines Schlosses in einer perspektiven Ansicht,
• Fig. 2 die Sperreinrichtung im verrasteten Zustand des Gesperres,
• Fig. 3 die Sperreinrichtung im gelösten Zustand des Gesperres,
• Fig. 4 die Sperreinrichtung im übermäßig stark beschleunigten Zustand,
• Fig. 5 den Aufbau der Verdrehsicherung und
• Fig. 6 die Verdrehsicherung im gesperrten Zustand.

In the following the invention will be explained in more detail with reference to drawings showing only one exemplary embodiment. In the drawing shows:

• Fig. 1 the construction of a castle in a perspective view,
• Fig. 2 the locking device in the latched state of the locking mechanism,
• Fig. 3 the locking device in the released state of the locking mechanism,
• Fig. 4 the locking device in the excessively accelerated state,
• Fig. 5 the structure of the rotation and
• Fig. 6 the rotation in the locked state.

It should be noted that the proposed lock is applicable in all conceivable closing devices. In a particularly preferred embodiment, however, the proposed lock is used in motor vehicles.

The following is the basic operation of the castle and the proposed locking device, as in the FIGS. 1 to 4 illustrated, explained.

The FIG. 1 shows a particular metal lock case 1 of a castle that serves to support a Gesperres. The ratchet comprises a rotatably mounted, preferably predominantly made of metal rotary latch 2, which can be rotated about its axis 3 around. The locking mechanism also comprises a main latching pawl 4, preferably made predominantly of metal, and a pre-ratchet pawl 5, which is preferably made predominantly of metal.

The main catch pawl 4 and the Vorrastsperrklinke 5 are arranged one above the other and have a common axis of rotation 6, by which the two pawls 4 and 5 can be rotated independently. The ratchet further comprises a blocking lever 7, as in the FIG. 1 shown the main latch pawl 4 in the illustrated locked position of the Blocking locks is possible. The catch 2, the main catch pawl 4 and the blocking lever 7 are located substantially in a common plane. In an overlying level is the Vorrastsperrklinke. 5

In order to lock the catch 2 in the pre-locking position, the rotary latch 2 has a protruding pin 8 which can be moved against the lever arm 9 of the Vorrastsperrklinke 5 for locking in the pre-locking position. The end of the lever arm 9 then prevents clockwise rotation of the rotary latch 2 in the direction of its open position.

The rotary latch 2 is able to initiate an opening moment in the main latching pawl 4. If the blocking lever 7 leaves its blocking position, then the main latching pawl 4 moves out of its rest position due to the opening moment introduced. The catch 2 can then be moved to its open position by rotating about its axis 3 in a clockwise direction.

The Vorrastsperrklinke 5 also represents the release lever of the lock. If the release lever 5 is rotated clockwise and so actuated, so detects a projection 10 of the Vorrastsperrklinke 5 a driver 11 of the blocking lever 7 and thus rotates the blocking lever 7 from its blocking position when the Vorrastsperrklinke 5 or the trigger lever 5 is not excessively accelerated.

If the release lever 5 is rotated clockwise for opening the locking mechanism, the end of a lever arm 12 of the release lever moves a driver 13 in the FIG. 1 concealed locking lever of a locking device. The locking lever is rotatably connected by an axis 14 with an inertia lever 15. Under the inertia lever 15, the locking lever is arranged. The driver 13 passes through Slot 16 of the inertia lever 15 and is detected above the inertia lever 15 from the lever arm 12 of the Auslesehebels 5.

If the release lever 5 excessively accelerated, the locking lever is pivoted about its axis 14 in the clockwise direction, but not the inertia lever 15 about its axis 17. This is among other reasons, because the driver 13 of the locking lever extends through the slot 16, which allows a relative movement between the locking lever and the inertia lever 15.

One end of the locking lever arrives at excessive acceleration so in a locking position, which is effected by a rigidly attached to the lock case 1 locking contour 18. This prevents that the release lever 5 can be further rotated clockwise for a move out of the blocking lever 7 from its blocking position. It is thus avoided that the blocking lever 7 is moved out of its blocking position for opening the locking mechanism, namely by turning the blocking lever 7 about its axis 19.

The blocking contour 18 comprises a stop 25 and the recesses 26 and 27, by which the blocking positions (25, 26, 27) of the locking device or the locking lever 21 are fixed.

The locking lever 21 has a triangular projection 28 with bevels on both sides, wherein the counterclockwise inclined 29 has a smaller pitch than the other, opposite slope of the projection, which is arranged in a clockwise direction about the axis 14.

The stop 25 is formed as a slope of the locking contour 18, which is substantially parallel to the slope 29 of the Projection 28 of the locking lever 21 is in the locking position. When locking the locking mechanism by the locking device, the slope 29 can come into contact with the stop 25.

The recesses 26 and 27 are triangular in shape, wherein the contour of the recesses (26 and 27) to the projection 28 of the locking lever 21 in the blocking position, which is determined by the respective recess (26 or 25 27) adapted.

The inertia lever 15 includes at the lower end a gap 20 which serves to connect to a leg of a spring. The leg of the spring then reaches into this gap 20.

The Figures 2 and 3 clarify the structure and function of the locking device in the case of a conventional opening of the lock.

The FIG. 2 shows the initial situation when the locking mechanism is locked. Below the inertia lever 15 is the locking lever 21. A leg 22 of the prestressed spring 23 is located in the recess 20 and is thus connected to the inertia lever 15. The spring 23 is also under the inertia lever 15 and is guided around the axis 17 around. The axis 17 thus contributes to the holding of the spring 23. The other leg 24 of the spring 23 is connected to the locking lever 21. Preferably, the leg 24 is biased on a lateral contour, for example on a downwardly extending projection of the pawl 21.

If the release lever 5 is rotated clockwise about its axis 6 for opening the locking mechanism and not accelerated excessively, the spring 23 acts as a rigid connection between the locking lever 21 and the inertia lever 15. Turning the release lever 5 in the clockwise direction then causes in that the driver 13 of the blocking lever 21 is moved to the left. This turns the Actuating lever 15 together with the locking lever 21 about its axis 17 counterclockwise. The locking lever 21 then does not reach its locking position. By turning the release lever 5 clockwise, the blocking lever 7 can be moved out of its blocking position. Then the locking mechanism opens.

FIG. 4 shows the case when the release lever 5, starting from in the FIG. 2 situation has been excessively accelerated. Due to the comparatively large mass of the inertia lever 15, the inertia lever 15 is no longer rotated counterclockwise about its axis 17. Instead, the leg 24 is deflected and so brought into the position 24 '. The locking lever 21 is now rotated about its axis 14 in a clockwise direction and moved into its blocking position, which in the FIG. 4 is shown.

The blocking position 25 is reached when the end 28 of the locking lever 21 covers the stop 25, so that the inertia lever 15 can not be rotated counterclockwise. The blocking position 25 is thus also taken when the end 28 of the locking lever 21, although the stopper 25 covers, but this does not affect, as in FIG. 4 displayed. The locking contour 18 prevents now that the release lever 5 can be rotated so far about its axis 6 in the clockwise direction that thereby the blocking lever 7 is moved out of its blocking position.

In the case of a rebound, it may happen that the locking lever 21 from
the blocking position 25 on the stop 25 of the locking contour 18 unintentionally triggers. The inertia lever 15 could then move in the counterclockwise direction, so that the release lever 5 opens the ratchet unscheduled. The recesses 26 and 27, in the circumferential direction of the inertia lever 15 in the counterclockwise direction are arranged, now make it possible to block the inertia lever 15 by receiving and locking the locking lever 21 and thereby avoid unplanned opening of the locking mechanism.

FIG. 5 now illustrates the anti-rotation, which is assigned here the release lever 5 and the blocking lever 7. The anti-rotation comprises here preferably a locking finger 30 on the blocking lever 7. Another locking finger 31 on the release lever 5 is out of FIG. 6 seen. Basically, the rotation can also be designed as a locking stop depending on the design constraints. Like from the FIG. 5 it can be seen, the locking finger 30 is provided on the blocking lever 7, in particular adjacent to the blocking contour section 32. Preferably, the locking finger 30 is then on the associated arm 33 of the blocking lever and extends in the case of FIG. 6 upward beyond the adjacent surface of the arm 33 of the blocking lever 7. The locking finger 31 then extends from the release lever 5 downwards. As a result, the blocking lever 7, in particular the blocking contour section 32, can be reliably locked by the anti-twist device.

The locking finger 31 of the trigger lever 5 blocked in the in the FIG. 6 shown position the lifting of the blocking lever 7 from its blocking position, since then the locking finger 30 of the blocking lever 7 abuts against the locking finger 31 of the trigger lever 5. The two locking fingers 30 and 31 thus form a rotation. Such a blockade does not take place when the trigger lever 5 is in a different position, and in particular when the trigger lever 5, starting from the in the FIG. 6 shown position is further pivoted clockwise, to then allow the lifting of the blocking lever from its blocking position.

The blocking lever 7 also preferably has a cover 34. The cover 34 is in particular made of plastic and can be fixed positively and / or non-positively on the particular existing blockade lever 7. For example, the cover 34 can be attached to the main body of the blocking lever 7 via a snap connection. Here, the cover 34 preferably also includes the locking finger 30 of the blocking lever 7. However, it is also possible to form the locking finger 30 in one piece with the blocking lever 7.

FIG. 6 shows a perspective view of the rotation in the locked state. For a regular opening of the locking mechanism, the release lever 5 is preferably formed with a projection 10 which can detect a driver 11 provided on the blocking lever 7 during a rotation of the release lever 5 in the clockwise direction so as to move the blocking lever 7 out of the blocking position.

FIG. 6 The blocking takes place here via the engagement of the locking finger 30 on the blocking lever 7 with the further locking finger 31 on the release lever 5. The engagement of the rotation prevents further movement of the blocking lever 7, wherein the movement process, for example, by a shock or pulse may have been triggered. In case of FIG. 6 the locking fingers 30 and 31 pin-shaped or pin-shaped and protrude from the respective plane of the blocking lever 7 or tripping lever 5 out. Accordingly, the locking fingers 30, 31 extend substantially parallel to the axis of rotation of the blocking lever 7 or tripping lever 5.

If a movement process in the opening direction takes place on the blocking lever 7 as a result of the impact or as a result of the pulse, then the locking fingers 30, 31 of the anti-twist device engage with one another and thus prevent the locking mechanism from being released. The rotation lock 30 is in particular, such that the locking fingers 30, 31 of the anti-rotation lock from a predetermined rotation of the blocking lever 7 come into contact. The anti-rotation device 30 can then be adjusted so that it is effective at the end of a defined idle stroke of the blocking lever 7 and in this way the regular functionality of the lock is not affected when opening and closing the locking mechanism.

It is particularly advantageous in the proposed anti-rotation that a shock-induced or impulse-induced movement process in the locking mechanism, in particular of the blocking lever 7 is prevented due to excessive acceleration such as a crash acceleration. Accordingly, an automatic, unwanted opening of the locking mechanism can be reliably avoided.

For a regular opening of the locking mechanism, the security against rotation is preferably designed such that, with a corresponding rotation of the release lever 5, the anti-rotation device 30 is no longer effective. In particular, the locking finger 31 is then pivoted on the release lever 5 correspondingly from a blocking area, in such a way that engagement with the locking finger 30 on the blocking lever 7 is not possible. The locking mechanism can therefore be opened as intended. In principle, it is also possible to replace one or more locking fingers 30, 31 with correspondingly configured blocking stops, which can likewise be brought into engagement to prevent rotation.

Furthermore, the anti-rotation device 30 is in particular such that a collapse of the blocking lever 7 in the blocking position for detecting the pawl 4 is possible. The blocking contour portion 32 can then abut as a stop for the pawl 4 and so cause a determination of the pawl 4 and further locking the catch 2. Accordingly, the Anti-rotation, in particular on the arrangement of the locking fingers 30, 31 so arranged that the blocking lever 7 can be pivoted to lock the locking mechanism in the blocking position without a locking engagement of the rotation takes place.

The rotation is preferably effective only in the area in which the locking device, in particular by means of the inertia lever 15 and / or locking lever 21, the release lever 5 by a blocking position 25, 26, 27 blocked. For this purpose, the anti-rotation device preferably comprises a locking finger 30 or blocking stop arranged on the triggering lever 5. This ensures that the functionality of the anti-rotation device is coupled to the locking device already explained, so that improved opening of the locking mechanism can be prevented in the event of an excessive acceleration, in particular in the event of a crash. The locking device preferably corresponds to the above in connection with the FIGS. 1 to 4 explained locking device, so that may be referenced in this respect to the full extent on the above statements.

As the illustration in FIG. 6 to further remove the anti-rotation is particularly advantageous so that the blocking lever 7 rests in the locked by the rotation position with a sufficiently large blocking contour portion 32 on the pawl 4. Preferably, the portion of the blocking contour portion 32 which is engageable with the pawl 4, at least a quarter, more preferably at least half of the contour portion 32. This ensures sufficient coverage of the engaging elements, so that the locking generally improved is protected against impulses or shocks, in particular in the event of a crash.

The rotation can be useful with the above-mentioned locking device formed as part of a castle. All the above statements on the locking device therefore apply correspondingly with regard to the proposed anti-rotation and a lock designed for a motor vehicle.

Against the background of the problem in crash cases, it becomes clear that the lock with locking device and anti-rotation device is of particular importance. Shock-induced or impulse-related opening operations of the locking mechanism can be avoided with the locking device and the rotation lock as part of the lock even with excessive acceleration such as a crash acceleration in a reliable and above all space-optimized way.

Claims (11)

1. A lock, in particular for a door or a flap of a motor vehicle, comprising a locking mechanism including a rotary latch (2), a safety catch (4) for making the rotary latch (2) snap in a locking position, a blocking lever (7) for blocking the safety catch (2) in the locking position thereof and a release lever (5) for opening the locking mechanism by removing the blocking lever (7) from the blocking position thereof, wherein a locking device of the lock is provided which comprises a locking position (25, 26, 27), such that in case of an excessively strong acceleration of especially the release lever (5) and/or an associated handle of a door or a flap, the locking device can prevent the locking mechanism (5) from being opened, wherein furthermore an anti-rotation device is provided which can prevent an impact-dependent or impulse-dependent opening operation of the locking mechanism, wherein in the anti-rotation device a locking finger (30) or a locking stop is allocated to the blocking lever (7) and a locking finger or a locking stop is allocated to the release lever (5), and the anti-rotation device is designed such that the anti-rotation device only blocks a moving operation of the blocking lever (7), if in case of an excessively strong acceleration or a crash acceleration the locking device prevents the locking mechanism (5) from being opened,
   characterized in that
   in this position the anti-rotation device prevents the removal of the blocking lever (7) from the blocking position thereof by pushing the locking finger (30) or the locking stop of the blocking lever (7) against the locking finger (31) or the locking stop of the release lever (5), wherein such a blockage will not take place, if the release lever (5) is in a different position.
2. A lock according to the preceding claim, characterized in that the locking finger (30, 31) and/or locking stops are fastened on the blocking lever (7) and/or the release lever (5).
3. A lock according to the preceding claim, characterized in that the anti-rotation device is designed such that the opening operation of the locking mechanism will be exclusively blocked, if an impact-dependent or impulse-dependent movement process of the blocking lever (7) takes place.
4. A lock according to claim 3, characterized in that in case of a regular opening or closing operation of the locking mechanism, in particular in connection with a corresponding rotation of the release lever (5), the anti-rotation device is not able to cause a blocking.
5. A lock according to one of the claims 3 or 4, characterized in that the anti-rotation device is configured for blocking the rotating movement of the blocking lever (7), preferably such that the locking fingers (30, 31) and/or the locking stops can be meshed beyond a pre-determined rotation of the blocking lever into the opening direction.
6. A lock according to one of the preceding claims, characterized in that the locking fingers (30, 31) and/or locking stops are directly or indirectly fixed on the blocking lever (7) and/or the release lever (5) or that the locking fingers (30, 31) and/or locking stops are integrally formed with the blocking lever (7) and/or the release lever (5).
7. A lock according to one of the preceding claims, characterized in that the locking finger (30) and/or locking stop provided on the blocking lever (7) is arranged adjacent to a blocking contour section (32), in particular on the associated arm (33) of the blocking lever.
8. A lock according to one of the preceding claims, characterized in that the locking device of the lock comprises more than one locking position (25, 26, 27).
9. A lock according to the preceding claim, characterized in that the locking device includes an inertia lever (15) and a locking lever (21) which are connected to each other such that a not excessively accelerated release lever (5) and/or a not excessively accelerated handle can move the inertia lever (15) together with the locking lever (21) for moving the safety catch (4) out of the locking position thereof and/or for moving the blocking lever (7) out of the blocking position thereof.
10. A lock according to claim 7, characterized in that the anti-rotation device is designed such that in the position blocked by the anti-rotation device the blocking lever rests against the safety catch (4) with a sufficiently large blocking contour section (32), preferably such that at least one quarter, more preferably at least a half of the blocking contour section can be brought into engagement with the safety catch.
11. A lock according to one of the preceding claims, characterized in that the locking finger (30, 31) and/or locking stop is configured as a pin, bolt, stick or the like which protrudes from the blocking lever (7) and/or the release lever (5), and preferably that the locking finger and/or locking stop essentially extends parallel to the rotation axis (19, 6) of the blocking lever and/or release lever.

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