EP2964859A1

EP2964859A1 - Lock for a motor vehicle

Info

Publication number: EP2964859A1
Application number: EP14717984.0A
Authority: EP
Inventors: Hendrik Wahmann; Carsten Fuchs; Dirk Eichel
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2013-03-06
Filing date: 2014-02-28
Publication date: 2016-01-13
Anticipated expiration: 2034-02-28
Also published as: BR112015020220A2; KR20150126361A; MX2015011467A; CA2904103A1; RU2015141942A; WO2014135142A1; EP2964859B1; CN105026666B; DE102013211050A1; CN105026666A; US10557289B2; JP2016510093A; US20160010363A1

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 (2), a pawl (4) for locking the rotary latch in a detent position, preferably a blocking lever (7) for blocking the pawl in the detent position and a release lever (5) 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.

Description

Lock for a motor vehicle

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

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

The Drehfal le of a Kraftfahrzeu gschlosses usually ü ü has a fork formed by load arm and catch arm Einl ufschlitz (also called inlet mouth) into which the locking bolt of a vehicle door or flap, such as bonnet or trunk flap comes when the door or flap is closed. The locking pin or lock holder then rotates the catch from an opening position to 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.

In addition, a lock may comprise a blocking lever capable of blocking the pawl in its detent position. The blockage lever must be swiveled out of its blocking position or turned out so that the pawl can leave the latching position for opening the ratchet.

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 erforderlic h to rust the locking mechanism can. Such locks can be opened with little effort.

iBestätigungskopie 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, a lock with a locking mechanism is provided according to the publication EP 1518983A2, which comprises at least one actuating lever for triggering or opening the locking mechanism, so a release lever. The lock also has a locking lever, the actuating lever at a given

Vehicle accelerations blocked.

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, in order then to allow an opening of the lock.

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

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

It is a lock, especially for a door or flap of a motor vehicle, with a locking u comprehensive a catch, a pawl for rusting the catch in a locked position, preferably a blocking lever for blocking the pawl in its latching position and a release lever to open m the locking provided in particular by a lifting of the blocking lever from its blocking position. The lock comprises an anti-rotation device, which is able to prevent a shock-induced or pulse-related opening of the locking mechanism.

Essential is the consideration to provide an anti-rotation, by which a shock-induced or pulse-induced Öffnungsvorga ng of the locking mechanism can be prevented, preferably by appropriate intervention can be blocked. The anti-rotation device is in particular so beschbei that when excessive acceleration such as a crash acceleration and in particular the Ausl ösehebels and / or an associated handle a door or flap, the opening of the locking mechanism is prevented. Preferably, the anti-rotation lock is associated with the release lever and / or the blocking lever of the locking mechanism. 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 one or more locking fingers and / or locking stops, which are assigned in particular to the blocking lever and / or the release lever. 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 additionally, the rotation in a regular opening and / or closing operation of the locking mechanism, in particular in a corresponding rotation of the trigger lever, effectuate 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 come only from a vorbesfimmfen rotation of the blocking lever into engagement. 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 rusting the catch. The lock further includes a blocking lever which is capable of blocking the pawl when it does sic h is in its rest position. In addition, there is a release lever for opening or releasing the locking mechanism. If the release lever is actuated, the blockage lever is thereby moved out of its blocking position when the release lever is not excessively accelerated. If excessively high accelerations of the release lever occur, as can be caused by a crash, then blocking the shock prevents the release lever from moving 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 due to an excessively accelerated release lever, in particular caused by an impact in a crash, u nd the locking device dissolves from the first locking Stellu ng, peisweise aufgru nd a rebound, in particular delayed and / or repeated rebound, the locking device by holding a second or further locking actuator can continue to prevent the locking mechanism from opening, ie 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 unpredictable opening of the lock in the event of a crash is avoided even with the occurrence of Rückpral leffekten.

The S puerrein u uas in one embodiment, a Träg safety lever and a locking lever. Inertia lever and locking lever are so verbu NEN that the inertia Lever only then zusa m men with the locking lever is moved by the release lever, who n the trigger lever is accelerated in the usual way, 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.

With strong acceleration, the spring is due to the inertia of the inertia lever so deformed that only the locking lever is moved, but not the inertia lever. In particular, the spring is weitergespa ned with correspondingly strong acceleration. If the locking lever is moved independently of the inertia lever, so gela ngt the locking lever then in its locks the position. 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, which can be moved by the release lever for moving the locking lever kan n. When the release lever is actuated, the driver and thus the accelerator lever are moved.

Preferably, the driver of the locking lever extends 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 only accelerated at low accelerations of the release lever is moved. Preferably, the mass of the inertia lever is two times, preferably three times, more preferably four times greater than the mass of the S perrhebels. In a he 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 ü Bermä larly accelerated. If the locking lever is locked by the blocking contour and is thus in its blocking position, the triggering lever can not be further rotated so that 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 shock forces at the stop of the locking lever to the locking contour on de n lock box. The blocking contour can be dimensioned so small.

In one embodiment, the locking lever is connected to the lever in a lever so that a projection of the locking lever, when not excessively high in acceleration of the release lever or handle, adjoins the outer contour of the inertia lever, to that portion of the outer contour of the inertia lever which engages Pivoting for opening it still latched in locking position Gesperres the locking contour zugewan dt and / or maxim alen distance to the axis of the inertia lever has. Due to the small distance between the locking lever and locking contour with rusted 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 blocking contour has an arc whose center point corresponds to the axis of the inertia lever. Preferably, the radius of the arc is greater by a gap width than the maximum e distance of the outer contour of the inertia lever of desse n axis. Due to the small distance between the locking lever and Lock contour with rusted 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 has, at one end, a projection which faces outward in the radial direction with respect to the axis of the inertia lever. If the locking lever due to excessive acceleration of the Au sl ösehebels and / or handle relative to the inertia lever moves t, so the zei gt in the direction of the locking contour or is facing the locking contour and ensures that the locking lever, he in a blocking Position is held in the locking contour. This helps to provide a Mehrza hl of blocking positions in a technically simple manner.

In one embodiment, the locking contour comprises a stop and / or he at least one Ausn ehmung for blocking the Sperrh ebels, who n the trigger lever and / or handle ü is excessively accelerated. The recess or the recesses are preferably arranged from the stop in the U mfangrichtung of the inertia lever against the U clockwise. A blocking position of the locking device or the locking lever kan n so festg el egt by the stop or the recess or recess. First, a stop and then zumi nd est provide a recess, is particularly material-saving.

Festl eg en a blocking position by, for example, a stop or a recess means that a locking Stell u ng is then occupied by the locking device when the stop or the recess by blocking or blocking of the locking lever to prevent unscheduled opening of the lock assets , 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 locking or locking of the locking lever and thus avoiding an unplanned opening of the locking mechanism, even 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 Preload the locking lever with a. The adaptation of the contour of a Ausneh determination of the locking contour to the contour of the projection of the locking lever in the overlapping causes a particularly secure hold against bilateral pivoting and verm eide so un pla nig dissolving 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, the men in locking the Ges perres through the locking device in contact with the stop in contact. Due to the substantially parallel shaped bevels can lie through the area Kraftaufna hme the Ansch and the projection are smaller in size.

In one embodiment, the axis of the locking lever is arranged on the pres prung gegenü berliegendem end of the locking lever. Due to the arrangement of the axis in preferably the largest possible Absta nd to the projection, a particularly large pivoting of the projection of the locking lever when actuated by H ebelarm the release lever can be realized and dan k thus obtained Ü cover the projection in the locking contour a particularly safe H old locking device be effected in the blocking position.

In a preferred embodiment, the anti-rotation is such that the rotation only blocks a movement of the blocking lever when the locking device prevents overm ß ticularly strong acceleration in particular a crash acceleration, the opening of the locking mechanism. 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 connected via the common tripping lever function al. The release lever may accordingly have a locking finger and / or locking stop for the rotation and gekoppel with the locking lever and / or inertial lever of the locking device. In this respect, a particularly secure and reliable lock is provided by the coupling of the anti-rotation lock with the locking device.

Beso nder advantageous twisting is designed so that d the blocking lever in the locked by the rotation Stellun g with a sufficiently large blocking the contour portion of the pawl rests, preferably such that the blocking contour section at least a quarter, more preferably at least Half, with the Sperrklin ke engageable. This results in a correspondingly large stop between the blocking contour section of the blocking lever and the pawl. As a result, even in the locked position of the anti-rotation device, it is possible to ensure sufficient locking of the blocking lever with the pawl, so that the ratchet is reliably protected against shocks or pulses, especially during crash accelerations, and prevents unwanted opening of the ratchet ,

Vorzu gally, the locking finger and / or locking stopper as an outstanding pin, pin, pin o. The like. a m Blockade lever and / or Auslöseh ebel designed. Favorable enough, 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 Verschwenku ng effecting about a rotation anti-rotation.

In the following, the invention will be explained in more detail with reference to drawings only showing an embodiment. In the drawing shows: Fig. 1 shows the structure of a lock in a perspective view, Figure 2, the locking device in the locked state of the locking mechanism, Figure 3, the locking device in the released state of the locking mechanism, Figure 4, the locking device in excessively accelerated

Status,

5 shows the structure of the rotation and

6 shows 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. In the following, the basic mode of operation of the lock and the proposed blocking device, as shown in FIGS. 1 to 4, are explained first.

FIG. 1 shows a lock case 1 of a lock, which consists in particular of metal and serves to mount a locking mechanism. 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 locking mechanism further comprises a blocking lever 7 which, as shown in Figure 1, the main catch pawl 4 in the illustrated locked position of Blocking locks is possible. The rotary latch 2, the H pfrasfsperrklinke 4 and the blocking lever 7 are located substantially in a common plane. In a plane above it, the pre-ratchet pawl 5 is located.

U to lock the catch 2 in the pre-locking position, the catch 2 has a protruding pin 8 which can be moved against the H ebelarm 9 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 catch 2 is capable of initiating an opening moment in the locking pawl 4. Leaves the blocking lever 7 his bloc kierende position, then moves the Hauptrastsperrklin ke 4 due to the introduced opening moment from its rest position out hera us. The catch 2 can then be moved to its open position by turning about its axis 3 in the U-clockwise direction. The Vorrastsperrklin ke 5 at the same time represents the release lever of the castle da r. If the release lever 5 is turned U clockwise and thus actuated, then a projection 10 of the pre-ratchet pawl 5 engages a driver 11 of the blocking lever 7 and thus turns the blocking lever 7 out of its blocking position when the pre-ratchet pawl 5 resp Tripping lever 5 is not excessively accelerated.

If the release lever 5 is rotated clockwise to open the locking mechanism, then the end of a lever arm 1 2 of the release lever moves a driver 1 3 of a locking lever of a blocking device concealed in FIG. The locking lever is connected by an axis 1 4 with a Träg unit lever 1 5 rotating bar. U nter the inertia lever 1 5, the locking lever is arranged. The Mitneh mer 1 3 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 Pres prungs 28 of the locking lever 21 in the locking position. When locking the locking mechanism by the locking device ka nn the slope 29 come into contact with the stop 25. The recesses 26 and 27 are formed triangular, where in the contour of the Ausneh rules (26 and 27) to the projection 28 of the S perrhebels 21 in the blocking position, the determination by the respective Ausneh determination (26 or 25 27) , are adjusted. The inertia lever 1 5 comprises 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.

Figures 2 and 3 illustrate the structure and function of the locking device in the case of a conventional opening of the castle.

FIG. 2 shows the starting situation when the locking mechanism is locked. U nterha lb of the inertia lever 1 5 is the S perrhebel 21st A leg 22 of the prestressed spring 23 is located in the imitation ne 20 and is thus connected to the inertia lever 1 5. The spring 23 is also located under the inertia lever 1 5 and is guided around the axis 1 7 around. The axis 1 7 thus contributes to the holding of the spring 23. The other leg 24 of the spring 23 is connected to the S perrhebel 21 verbu States. 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 about its axis 6 for clockwise opening of the locking mechanism and is not excessively accelerated, the spring 23 acts as a rigid connection between the transmission lever 21 and the inertia lever 1 5. Turning the release lever 5 in FIG U clockwise then causes the driver 1 3 of the S perrhebels 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 has been excessively accelerated from the situation shown in FIG. 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 locking position, which is shown in FIG.

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 therefore also taken when the end 28 of the locking lever 21, although the stopper 25 covers, but this does not touch, as shown in Figure 4. 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, it is now possible by receiving and locking n of the locking lever 21, the inertia lever 1 to block 1 5 and thereby avoid unplanned opening of the locking mechanism.

Figure 5 illustrates nu n the rotation, which here the trigger lever 5 and the Blockad ehebel 7 is zugeord net. The Verdre hsicherung here preferably comprises a locking finger 30 on the blocking lever 7. Another locking finger 31 on the trigger lever 5 can be seen from the figure 6. Basically, the rotation can also be designed as a blocking stop depending on the constructive boundary conditions. As can be seen in FIG. 5, the blocking finger 30 is provided on the blocking lever 7, in particular adjacent to the blocking contours 32. Preferably, the locking finger 30 is located on the associated arm 33 of the blocking lever and, in the case of FIG. 6, extends 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. Hierd urch can be the blocking lever 7 in particular the blocking Kontura section 32 in a reliable manner by the anti-rotation lock n.

The S perrfinger 31 of the release lever 5 blocked in the position shown in Figure 6, the lifting of the blocking lever 7 from his bloc kierenden position, since then the S perrfinger 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 an anti-twist device. Eich such Bloc ka de does not take place when the release lever 5 is in a different n position, and in particular when the trigger lever 5 a n is pivoted further from the position shown in Figure 6 in the U clockwise direction, then the Lifting the Bloc kad lever out of its blocking position. The blocking lever 7 also preferably has a cover 34. The cover 34 consists in particular of plastic and may be fixed in a form-fitting and / or non-positively locking manner on the blockage lever 7, which consists in particular of metal. For example, the cover 34 can be secured 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 integrally trainees with the blocking lever 7.

Figure 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 1 0, which at a he rotation of the release lever 5 clockwise sense a provided on Blocka dehebel 7 driver 1 1 kn nn, so d the blockage lever 7 from the move out blocking position.

Figure 6 now represents the locked position. The blocking takes place here via d engagement of the locking finger 30 on Bloc kadeh ebel 7 with the other locking finger 31 on the release lever 5. The intervention of the rotation prevents further movement of the blocking lever 7, wherein the movement process, for example may have been triggered by a shock or an impulse. In the case of FIG. 6, the locking fingers 30 and 31 are pin-shaped or pin-shaped and protrude out of the respective plane of the blocking lever 7 or the triggering lever 5. Correspondingly, the locking fingers 30, 31 extend substantially parallel to the axis of rotation of the blocking lever 7 or release lever 5. Now finds the blocking lever 7 due to shock or impulse due to a motion ungsvorgang in the opening direction, the Sperrfing he come 30, 31 of rotation against each other and prevent such a release of the locking mechanism. The rotation lock 30 is in particular, such that the locking fingers 30, 31 of the Verdrehsic herung from a vorbesfimmten rotation of the blocking lever 7 come into contact. The anti-rotation 30 ka nn da nn be set 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 rotation against rotation that a shock-induced or pulse-induced Beweggs ngsvorgang in the locking especially the blockage lever 7 aufgru nd excessively strong acceleration such as a crash acceleration is prevented. Accordingly, an automatic, undesirable opening of the locking mechanism can be reliably avoided.

For a rule-open opening of the locking mechanism, the rotation is preferably designed so that at a corresponding rotation of the release lever 5, the rotation 30 is not effective. In particular, the locking finger 31 on the triggering lever 5 is then correspondingly pivoted out of a blocking region, in such a way that engagement with the blocking finger 30 on the blocking lever 7 is no longer 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 designed such that an incidence of the blocking lever 7 in the blocking position for locking the pawl 4 is possible. The blocking contour portion 32 can then abut as a stop for the pawl 4 and thus cause a determination of the pawl 4 and further a rusting of 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 described in connection with the figures 1 to 4 locking device, so that may be referenced in full extent to the above statements. As can further be seen from the illustration in FIG. 6, the anti-twist device is particularly advantageously designed such that the blocking lever 7 rests against the pawl 4 in the position locked by the anti-rotation lock with a sufficiently large blocking contour section 32. 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 above-mentioned embodiments of the locking device therefore apply correspondingly in regard to the proposed anti-twist device 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 prevented in a reliable and, above all, space-optimized manner with the locking device and the anti-rotation lock as a component of the lock even with excessively high acceleration such as a crash acceleration.

Claims

Lock, in particular for a door or Kla ppe a motor vehicle, with a locking mechanism comprising a rotary latch (2), a pawl (4) for rusting the catch (2) in a locking position, preferably a blocking lever (7) for blocking the pawl (4) in its locking position and a release lever (5) for opening the locking mechanism, in particular by a lifting of the blocking lever (7) from its blocking Stell, characterized in that an anti-rotation is provided to prevent a shock-related or pulse-related opening operation of the locking mechanism able.

Schl oss according to the preceding claim, characterized in that the anti-rotation comprises one or more S perrfinger (30, 31) and / or Sperranschläge associated in particular the blocking lever (7) and / or the trigger lever (5) and / or to this are attached.

Lock according to the preceding claim, characterized in that the rotation is such that a blocking of the opening process of the ratchet exclusively in a shock-related or pulse-induced movement of the blocking lever (7).

Lock according to one of the preceding claims, characterized in that the rotation in a normal opening and / or closing operation of the locking mechanism, in particular in conjunction with a corresponding rotation of the release lever (5), is unable to cause blocking.

Lock according to one of the preceding claims, characterized dad urch that the rotation for blocking the Rotary movement of the blocking lever (7) is formed, preferably in such a way that locking fingers (30, 31) and / or locking stops are engageable in the opening direction from a predetermined rotation of the blocking lever.

Lock according to one of the preceding claims, characterized in that the locking fingers (30, 31) and / or locking stops are fastened directly or indirectly to the blocking lever (7) and / or trigger lever (5), or that the locking fingers (30, 31) and / or blocking stops integral with the blocking lever (7) and / or release lever (5) are configured.

Lock according to one of the preceding claims, characterized in that the blocking finger (30) and / or blocking stop provided on the blocking lever (7) are arranged adjacent to the blocking contour section (32), in particular on its associated arm (33) of the blocking lever.

Lock according to one of the preceding claims, characterized in that a locking device of the lock is provided, which in particular more than a blocking position (25, 26, 27), such that the locking device at excessively strong acceleration, and in particular at excessively high acceleration the release lever (5) and / or in excessively strong acceleration of an associated handle of a door or flap opening. of the lock (5) is able to prevent.

Lock according to the preceding claim, characterized in that the locking device comprises an inertia lever (15) and a locking lever (21), which are interconnected so that a not excessively accelerated release lever (5) and / or a not excessively strong accelerated grip the inertia lever (1 5) zusa m men with de m the locking lever (21) for H erausbewegen the Sperrklin ke (4) from its locking position and / or the blocking lever (7) from its blocking position to move.

Lock according to one of the preceding claims, dad urch g ekennzeichnet that the rotation is such that the rotation only a movement ungsvorgang of the blocking lever (7) locks when the locking device prevents the opening of the locking mechanism with excessive acceleration or crash acceleration.

Lock according to one of the preceding claims, characterized in that the anti-rotation device is designed so that the blocking lever rests in the locked position by the rotation with a sufficiently large blocking contour portion (32) on the pawl (4), preferably d erart, in that the blocking contour section can be brought into engagement with the pawl at least to a quarter, more preferably at least half.

Lock according to one of the preceding claims, characterized in that the locking finger (30, 31) and / or locking catch is designed as an outstanding pin, bolt, pin or the like on the blocking lever (7) and / or trigger lever (5), more preferably, that the locking finger and / or blocking stop extends substantially parallel to the axis of rotation (1 9, 6) of the blocking lever and / or release lever.