EP2133497A1 - Vehicle door lock - Google Patents

Abstract

The lock (1) has a rotating catch bolt (3), a catch (4) and an actuating lever (10) with an external actuation and an internal actuation. An interior locking device is directly operated on a locking lever (16). An external locking device is operated by a central locking element (17) on the locking lever.

Description

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

From the DE 19533199 a door lock for a motor vehicle with an outer latch, an inner latch, a locking lever, and a rotatably mounted central locking element for a drive by a central locking drive is known. The central locking element can assume the three angular positions "unlocked", "locked" and "theft-proof", while the locking lever can assume the two functional positions "unlocked" and "locked". The central locking element has an eccentric control cam which cooperates with the locking lever such that the control cam blocks the locking lever in the functional position "locked" when the central locking element is in the angular position "theft-proof".

The problem here is the emergency release, d. H. if the locking lever is blocked by the control cam in the theft deterrent mode and the central locking drive fails. For this purpose, a complex mechanism is provided which decouples the blocked locking lever of the other lock mechanism, when in the case of emergency unlocking the outer latch is actuated. In general, the Außenverrieglung to a lock cylinder, which can be operated manually with the door key.

As the anti-theft mode is here understood the functionality that it is not possible to unlock the vehicle by means of the inner latch and to open, ie even with a chosen disc a potential thief can not unlock and / or open the vehicle door by the operation of the inner latch ,

The object of the invention is to overcome the disadvantages known from the prior art and to provide a door lock for a vehicle that is simpler, less expensive and safer.

This problem is solved with the features of claim 1.

By the inner latch acts directly on the locking lever and the outer latch on the central locking element on the locking lever, can be dispensed with a complex mechanical decoupling for emergency release. Rather, the already existing central locking element is used to transmit the movement of the outer lock on the locking lever. By contrast, the internal lock acts directly on the locking lever.

If the central locking element in the angular position "theft-proof" blocks the locking lever, this can not be spent by actuation of the inner latch in the functional position "unlocked". In contrast, the central locking element is freely movable between the three angular positions and can thus be brought by the outer latch in one of the three angular positions. In the case of an existing central locking drive, the emergency unlocking can thus be carried out by the external locking in case of failure of the same.

Advantageously, by means of the external locking the central locking element from the angular position "theft-proof" in the angular position "locked" and / or "unlocked" are spent. This corresponds to the function of an emergency release, by means of which the lock can be unlocked when it is in the anti-theft mode and the central locking drive fails. Then the vehicle can no longer be unlocked by means of the Innenverrieglung, but only on the outer latch and in particular a key and an associated lock cylinder, which is arranged externally operable on the vehicle and which is part of the outside lock.

Furthermore, by means of the external locking the central locking element from the angular position "locked" and / or "unlocked" in the angular position "theft-proof" can be spent. This feature is new in that now a vehicle can be spent in the anti-theft mode even with failed central locking drive and / or in the absence of central locking. For this purpose, only the external operation must be operated differently than in the normal lock in a certain way. Thus, the castle z. B. by the operation of a key and an associated lock cylinder, which is arranged operable on the outside of the vehicle and is part of the external locking, are spent in the anti-theft mode.

This functionality is helpful if, for example, B. in a vehicle breakdown, the central locking fails and the broken-down vehicle is to be secured against theft. Or the vehicle has no central locking, but should also be protected against theft. Then the vehicle can be locked "theft-proof" manually. Thus, a theft protection can be realized without existing central locking in a purely mechanical lock or the vehicle can be spent in case of failed central locking anyway in a theft protection mode.

Advantageously, the outer lock comprises a lock cylinder which is arranged in the lock housing. Thus, the lock can be built compact and theft-proof. In the patent application DE 197 04812 A1 such a structure is disclosed. The disclosure of the DE 197 04812 A1 is hereby incorporated by reference into the disclosure of this specification. By means of such a construction, a particularly anti-theft lock can be built.

The central locking element preferably has an outer locking cam, which cooperates with the outer locking. This will be the force or the movement the Außenverrieglung transferred directly to the central locking element. Advantageously, an outer locking rod of the outer latch is connected to the outer locking cam. By means of an outer locking bar, the force and the movement of the outer lock can be very simple and very direct, especially when the Außenverrieglungsstange interact with the outer locking cam directly transferred to the central locking element.

The connection between the central locking element, in particular the outer locking cam, and the outer locking, in particular the outer locking bar, is advantageous with a predetermined play. Thus, a movement that performs the central locking element due to actuation by the central locking drive and / or an actuation by the inner latch, be decoupled from the outer latch. These movements of the central locking element are thus not transferred to the other component of the external locking, in particular a lock cylinder. In contrast, the movement of the outer lock during unlocking or locking must then bridge this game to move the central locking element.

In an advantageous embodiment, the lock on a central locking drive with a motor, wherein the motor is connected by gearing with the central locking element. The central locking drive may comprise a plurality of gear elements, in particular gears, which transmit the movement of the motor to the central locking element in one or more stages. As an engine, in particular an electric motor into consideration, however, there are also all other actuators suitable that can apply a required movement of the central locking element movement and force directly or indirectly, ie z. B. air actuators, electromagnetic (linear) actuators, piezo actuators, hydraulic actuators, etc.

Advantageously, the connection between the engine of the central locking drive and the central locking element is subject to a predetermined game. Thus, can a movement of the central locking element due to an actuation of the outer and / or the inner latch are decoupled from the engine, ie an actuation of the outer and / or the inner latch moves only the central locking element, but not the motor. If the motor for driving the central locking element is heavily stunted, the locking forces, if the engine would have to be moved, would be quite high, which is thus avoided.

Preferably, a spring-loaded return element is arranged in the connection between the engine and the central locking element. Thus, the drive of the motor can be supported in a certain direction, the return direction. Thus, the required motor drive forces or torques can be reduced and the motor can be made lighter.

Advantageously, the spring-loaded return element is coupled in a gearbox with the motor and the return element returns when the motor is switched back spring-loaded in a rest position. Thus, the central locking drive is always in the same position when the engine is not driven. For an electric motor, this would be the case if it is not energized.

In an advantageous embodiment, the restoring element has a driving cam, whereby the movement of the restoring element is transmitted to the central locking element, wherein the restoring element depending on the position of the central locking element and depending on the direction of rotation of the engine has a certain idling before the central locking element is actuated. This creates a defined clearance between the engine and the central locking element.

This embodiment is particularly in connection with the spring-loaded return element, which spends the engine in the off state in a rest position provided. Then, the return element or the engine always has the same starting position when the engine receives a drive signal. The central locking element, however, is free in its movement, especially if it is due to the interior and / or External lock is moved. When the motor drives, it compensates for the resulting play until the drive cam has "unlocked", "locked" or "theft-proofed" the central locking element in the desired angular position. After switching off the drive, the restoring element and thus the motor spring-loaded returns to the rest position, while the central locking element remains in the set angular position.

The driving cam does not have to act directly on the central locking element, but the movement can also by intermediate transmission elements, for. As gears, levers, etc. are transmitted.

In a preferred embodiment, the control cam cooperates with a control groove in the locking lever. By the control cam is guided in a control groove in the locking lever, precisely defined states of motion between the central locking element and the locking lever can be produced. In particular, this may represent a geared coupling such that the angular position "unlocked" of the central locking element and the functional positions "unlocked" of the locking lever or the angular position "locked" and the functional positions "locked" always occur together with central locking element and locking lever.

Preferably, the contour of the cam groove is shaped so that the control cam is in the angular position "theft-proof" to the control groove, that a resultant force of the locking lever on the control cam passes substantially through the axis of rotation of the central locking element. This is essentially achieved in that the contact surface between the cam and control cam is aligned or shaped so that the vertical runs on this contact surface through the axis of rotation of the central locking element. If in this position of the central locking element, the internal locking is actuated with the aim to bring the locking lever "unlocked" in the functional position, acting on the central locking element only forces through its axis of rotation, but none Torques. Due to the friction in the system and the pressure by the acting actuating force from the control groove, the central locking element remains in the angular position "theft-proof", no matter how large the forces on the locking lever on the cam and thus on the control cam also. But this is the movement of the locking lever is blocked by the central locking element in the angular position "theft-proof".

The same effect of the blockage is effected when the contour of the cam groove is shaped so that the control cam in the angular position "theft-proof" is to the control groove, that a resultant force of the locking lever on the control cam so offset from the axis of rotation runs that the central locking element Locking movement due to the acting force would perform. Then, by unlocking the locking lever, the central locking element can never be unlocked. When the central locking element runs in the direction of locking against an end stop, the unlocking movement via the inner locking is ineffective because the locking element can not rotate further and thus the locking lever remains blocked.

In a preferred embodiment, the locking lever is divided into two parts into a locking lever central part, which cooperates with the control cam, and a locking lever inner part, which cooperates with the inner latch, wherein locking lever central part and locking lever inner part are non-positively connected to each other. This allows a relative movement of the two locking lever parts to each other and / or the arrangement of the two parts at different levels.

The locking lever central part and the locking lever inner part advantageously rotate about a common locking lever axis. In this case, both parts can be mounted on the axis itself, or a part is rotatably mounted in the other, which in turn sits rotatably on the locking lever axis. The common axis of rotation for both Parts allows a compact design of the two-part locking lever.

Furthermore, it is advantageous if locking lever central part and locking lever inner part are non-positively connected via a coupling spring. Thus, the movements between the two parts can be decoupled at a certain level of force. This functionality is particularly advantageous in connection with the locking lever blocked by the control cam when the central locking element is in the angular position "theft-proof". If in this position of the central locking element, the inner latch is actuated with the aim to bring the locking lever in the functional position "unlocked", the inner latch works against the clutch spring and can indeed be moved, so that the impression of unlocking arises, but it will "Unlocking movement" is not transmitted to the locking central lever part, which is blocked by the control cam.

Locking lever central part and locking lever inner part are preferably positively connected via positive locking when the locking lever inner part is moved from the functional position "unlocked" into the functional position "locked" upon actuation of the internal locking system, and locking lever central part and locking lever inner part are frictionally connected via the coupling spring when the locking lever inner part is actuated upon actuation of the internal locking from the functional position "locked" in the functional position "unlocked" is moved. This functionality ensures the function that the Innenverrieglung as described above "empty" runs when the control cam in the angular position "theft-proof" the locking lever central part in the functional position "locked" blocks. At the same time, however, it is ensured that a locking movement is transmitted by the inner lock directly and without a coupling spring on the locking lever central part, so that the lock can be locked from the vehicle interior in any case and this function is not levered at a certain level of force by the clutch spring.

In a further embodiment, the lock has an actuating lever, which is actuated by an internal operation and an external operation. The operating lever has the function to open the lock itself by a locking mechanism is opened. In particular, the actuating lever acts on a pawl, which in turn releases a catch of the lock and thus allows the door to open. In general, the operating lever is spring-loaded and returns to an operation by the internal or external operation in the starting position.

Internal and external operation usually act directly on the operating lever, wherein internal and / or external operation can be made in one piece or in several parts, i. they may also consist of several intermediate elements and levers for transmitting the corresponding actuating movement. The inner operation is usually connected to a manually operable inner handle, which is arranged in the interior of the vehicle, which is preferably in the vehicle door itself. The external operation is usually also connected to a manually operable external handle, which is arranged on the outside of the vehicle, preferably on the vehicle door itself. On the handles, the actuating movement is applied and transmitted via suitable transmission means such as actuating rods, Bowden cables, etc. on the inner or outer latch, which in turn transmit this actuating movement on the actuating lever.

Preferably, the lock comprises an internal operating lever as part of the internal operation, wherein the internal operating lever cooperates with an actuating lever. The inner actuating lever can be rotatably mounted on the lock housing, and transmits the actuating movement of the inner handle of a transmission means to the actuating lever. This arrangement makes it possible to leave the operating lever itself and the associated lock mechanism for different lock variants, while the adaptation to different vehicles only via the internal operating lever, which is adjusted according to the available space and function.

In a further embodiment, the lock comprises an inside lock lever as part of the inside lock, the inside lock lever cooperating with the lock lever. The inner locking lever can be rotatably mounted on the lock housing, and transmits the locking movement of an inner locking handle in the same way to the locking lever as previously described for the inside operating lever.

Preferably, the inner actuating lever and the inner locking lever cooperate in such a way that an actuation of the inner actuating lever spends the locking lever from the functional position "locked" into the functional position "unlocked" or vice versa. Such a coupling of the two functions "operating" and "locking / unlocking" on the lock has the advantage that in the vehicle interior, only an inner handle and only a transmission means is required to transmit both the manual actuating movement and the locking or unlocking movement , Such an inner handle is for example in the EP 0 169 644 disclosed.

In an advantageous embodiment, a transmission element with the locking lever, in the case of the two-part locking lever with the locking lever central part, connected and is spent by this in the functional position "unlocked" or "locked". In this case, take the locking lever and transmission element respectively the same functional position, so both are either "unlocked" or both are "locked". The transmission element makes it possible to arrange the locking mechanism, in particular with locking lever and central locking element, separate from the actuating mechanism, in particular the actuating lever, in the lock. It establishes, as it were, the mechanical connection between the locking mechanism and the actuating mechanism and displaces the actuating mechanism either into the "unlocked" or "locked" functional states. When "unlocked" opens an operation of indoor or outdoor operation, the lock open, with "locked" the lock remains closed.

Preferably, the transmission element is rotatable via a bolt connection with the Locking lever connected. Then, the rotational movement of the locking lever can be transmitted to a longitudinal movement of the transmission element, which, depending on the storage in the lock housing, this longitudinal movement can be superimposed by a rotational movement.

Preferably, the lock has a pawl, in particular for triggering a rotary latch, wherein the transmission element between pawl and an actuating lever is arranged so that in the functional position "unlocked" the operation of the actuating lever is transmitted by means of the transmission element on the pawl, and in the functional position "locked" no transmission of the actuation of the actuating lever is done on the pawl. The transmission element serves to transmit the opening force and the opening movement of the actuating lever to the pawl when the transmission element is "unlocked" in the functional position. In the functional position "locked" the transmission element is so crazy that there is no transmission of the opening movement of the actuating lever on the pawl; the movement of the operating lever and thus also the operation of the inside or outside operation go into the void.

Conveniently, the transmission element at the end of a transmission cam, wherein the transmission cam in the functional position "unlocked" the motion transmission between the actuating lever and the pawl is used. Then the transmission element can be accommodated relatively flat and space-saving in the castle. Where the coupling of actuating lever and pawl is needed to transmit the opening movement, the transmission cam is mounted on the transmission element, so that it can transmit exactly the force between the actuating lever and pawl.

In a further embodiment, the transmission element in the functional position "locked" blocks the actuation of an actuating lever. This blocking of the operating lever can be done by any suitable means, in that the transmission element interacts with the actuating lever so that it can no longer be moved. For example, the guided in the lock housing transmission element drive in a control groove in the operating lever, so that it is fixed relative to the lock housing. In the functional position "unlocked" this blockage is canceled by the transmission element is moved away from the actuating lever, so that the actuating lever can be moved again as normal.

In principle, it is also possible that the locking lever has an eccentric control cam, which cooperates with the central locking element, and the locking lever is locked in the functional position "locked" by the control cam when the central locking element is in the angular position "theft-proof". In principle, everything that has been carried out so far applies in the same way, except that the control cam is located on the locking lever, in the case of the two-part locking lever, preferably on the locking central part. Then, the control cam can cooperate with a control groove in the central locking element, wherein the same Funktionaltität can be generated as described above and in the embodiments.

Fig. 1

eine schematische Ansicht eines erfinderischen Schlosses mit den wichtigsten Funktionskomponenten; und

Fig. 2a

eine schematische Draufsicht der wesentlichen kinematischen Elemente des Schlosses im Zustand "entriegelt";

Fig. 2b

eine Ansicht entsprechend Fig. 2a mit dem Schloß im Zustand "entriegelt" und "betätigt";

Fig. 3a

eine Ansicht entsprechend Fig. 2a mit dem Schloß im Zustand "verriegelt";

Fig. 3b

eine Ansicht entsprechend Fig. 2a mit dem Schloß im Zustand "entriegelt" und "betätigt";

Fig.4a

eine Ansicht entsprechend Fig. 2a mit dem Schloß im Zustand "diebstahlgeschützt";

Fig. 4b

eine Ansicht entsprechend Fig. 2a mit dem Schloß im Zustand "diebstahlgeschützt" und Innenverriegelung "betätigt";

Further details and aspects of the invention will become apparent from the accompanying drawings. Show it:

Fig. 1

a schematic view of an inventive lock with the main functional components; and

Fig. 2a

a schematic plan view of the essential kinematic elements of the castle in the state "unlocked";

Fig. 2b

a view accordingly Fig. 2a with the lock in the state "unlocked" and "pressed";

Fig. 3a

a view accordingly Fig. 2a with the lock in the state "locked";

Fig. 3b

a view accordingly Fig. 2a with the lock in the state "unlocked" and "pressed";

4a

a view accordingly Fig. 2a with the lock in the state "theft-proof";

Fig. 4b

a view accordingly Fig. 2a with the lock in the state "theft-proof" and internal locking "actuated";

FIG. 1 shows in a perspective view schematically an inventive lock 1 with the main functional components. For a clearer illustration several cams are omitted. The lock 1 has a U-shaped bent lock plate 2, which receives a locking mechanism, an actuating mechanism and a locking mechanism.

The locking mechanism comprises at least one rotary latch 3 and a pawl 4. The rotary latch 3 is rotatably mounted on the rotary latch axis 5, which is anchored in the lock plate 2 and cooperates with a locking bolt, not shown, attached to the vehicle body. The pawl 4 is rotatably mounted on the pawl axis 7, which is also firmly anchored in the lock plate 2. The pawl 4 locks the catch 3 by the locking pin engages in the rotary latch cut 6 when closing the door and the rotary latch 3 in the closing direction S twisted until the pawl projection 8 engages in the rotary latch paragraph 9. Thus, the thus locked rotary latch 3 locks the door in the closed door position. A rotation of the pawl 4 in the direction of arrow A releases the catch 3 and the door can be opened. Other elements of the locking mechanism such. B. return springs are not shown here, but are well known.

The actuating mechanism comprises at least one actuating lever 10, which also is rotatably mounted on the pawl axis 7, an external actuating lever 11 which is rotatably mounted on the anchored to the lock plate 2 outer actuating shaft 12, and an internal actuating lever, not shown here. The actuating movement of the outside door handle is transmitted via a Bowden cable, not shown, and via the Bowden cable attachment 13 to the external operating lever 11. This transmits the actuating movement B on the Außenbetätigungsarm 14 of the actuating lever 10. On the opposite side, the actuating lever 10 has an inner actuating arm 15, via which in a similar manner, the actuating movement B of the inner operating lever is transmitted to the actuating lever 10.

The locking mechanism comprises at least one locking lever 16, a central locking element 17 and a transmission element 18. The locking lever 16 is rotatably mounted on the locking lever axis anchored in the lock plate 19 and consists of the two parts locking lever central part 20 and locking lever inner part 21st

The Zentralverrieglungselement 17 is rotatably mounted on the central locking axis 22 which is anchored in a further, not shown here part of the lock housing. The Zentralverrieglungselement 17 has an eccentrically arranged control cam 23, which cooperates with a control groove 24 in the locking lever central part 20. On the upper side, the central locking element 17 has two attachment cams 25, on which the central locking element 17 is screwed to a gear, not shown, via which the central locking drive, not shown, drives the central locking element 17.

The central locking element 20 can rotate in two directions, represented by the arrows and V and E, wherein the arrow V indicates the direction of rotation when locking and arrow E indicates the direction of rotation when unlocking. About the control cam 23 and the cam 24, this rotational movement is transmitted to the locking lever central part 20, where there the resulting directions of rotation also represented by the arrows V and E. Here, too, arrow V is the direction of rotation when locking and arrow E indicates the direction of rotation when unlocking.

On the central locking member 17, a further cam is mounted, the eccentrically arranged outer locking cam 26 which cooperates with the outer locking bar 27, wherein the outer locking cam 26 is guided in the Außenverriegelungsnut 28 of the outer locking bar 27. The outer locking bar 27 is driven by a lock cylinder, not shown, directly or indirectly via an eccentric, not shown, by the eccentric engages in the cutout 31 of the outer locking bar 27 and thus transmits the rotational movement during the opening or closing of the lock cylinder on the outer locking bar 27 and thus a causes predominantly linear reciprocating movement of the outer locking bar 27, represented by the two arrows V and E, where V indicates the direction of movement when locking and E the direction of movement when unlocking.

Due to the Außenverriegelungsnut 28 is between the outer locking cam 26 and the outer locking bar 27 a certain amount of play. In this case, the game is chosen so that a rotation of the central locking element 17 is not transmitted via the outer locking cam 26 on the outer locking bar 27 and thus on the lock cylinder. Only one locking or unlocking movement of the lock cylinder can be transmitted to the central locking element 17, which then causes the central locking element 17 to reciprocate, the arrow V indicating the direction of rotation when locking and E the direction of rotation when unlocking. This is possible because the reciprocating motion of the outer locking bar 27 is greater than the play in the outer locking notch 28 and thus the central locking element 17 is rotated by the outer locking cam 26 to the "locked" or "unlocked" angular position.

For the function of the emergency release, ie when the central locking element 17 is in the angular position "theft-proof", the Central locking element 17 in the angular position "locked" or "unlocked" are rotated by means of an unlocking movement of the lock cylinder. With a corresponding geometric arrangement, the central locking element 17 can be rotated by means of a locking movement of the lock cylinder from the angular position "locked" to the angular position "theft-proof".

The lock cylinder is in the lock cylinder housing 40 which is fixedly connected to the lock plate 2, stored and fixed. The arrangement and the functionality of the arrangement lock cylinder, outer locking bar 27 and central locking element 17 are already out of the DE 19704812 A1 known.

An unillustrated inside locking lever transmits a locking and unlocking movement, represented by the two arrows V for locking and E for unlocking, the inside locking via the inside locking arm 29 of the locking lever inner part 21, which performs a corresponding rotational movement about the locking lever axis 19. Locking lever inner part 21 and locking lever central part 20 are mutually partially rotatably mounted and rotatably coupled via a coupling stop and a coupling spring such that in an unlocking E of the internal locking a rotary coupling via the coupling stop and a locking movement V of the internal locking via the coupling spring. The coupling mechanism is the FIGS. 4a, 4b further described.

The transmission element 18 is arranged eccentrically on the locking lever central part 20 and is articulated in this by a mounted on the transmission element 18 bearing pin 30 is mounted in a corresponding bore in Verriegelelszentralzentralteil 20. A rotation in the direction E or V of the locking lever central part 20 causes a substantially linear reciprocating movement of the transmission element 18, characterized by the arrows E for unlocking and V for locking. The transfer element 18 is when locking V in the direction of the catch 3 in a locking position and unlocking E in the moved in the opposite direction in an unlocked position. The operation of the transmission element 18 on the actuating mechanism is in the Figure 2a - 3b described.

In the FIGS. 2a-4b the lock is shown with its essential kinematic elements respectively in the same schematic plan view for different operating conditions. The numbering is the same for all 6 figures. The operating lever 10, the locking lever central part 20 and the central locking element 17 are partially cut open in order to be able to represent the parts underneath. The originally visible from above contours of the cut parts are shown in the cut area thick and short dashed lines. Hidden lines are thin and dashed.

In FIG. 2a is the central locking element 17 in the angular position I "unlocked" and is coupled to the locking lever 16 via the control cam 23 which engages in the control groove 24 of the locking lever central part 20, whereby the locking lever 16 occupies the functional position I "unlocked". The transmission element 18 is articulated with its bearing pin 30 in the locking lever central part 20 and is "unlocked" in the transmission position. The state of the castle as in FIG. 2a is thus represented "unlocked" and "closed".

The transmission element 18 cooperates with the pawl 4 and the actuating lever 10 by a transmission cam 32 of the transmission element 18 between a latching arm 33 of the pawl 4 and an actuating cam 34 of the actuating lever 10 is arranged. As in Fig. 2b shown, the transmission cam 32 transmits the actuating movement B of the actuating lever 10 on the pawl 4, whereby this carries out the movement A, which in turn releases the pawl, not shown, and opens the lock. The state of the castle as in FIG. 2b is thus displayed "unlocked" and "open".

In this case, an actuating movement B of the actuating lever 10 can take place both via the external actuating arm 14 and via the internal actuating arm 15. Pawl 4 and lever 10 are not shown by means of return springs in the in FIG. 2a shown closed position when the operating lever 10 is not operated.

A locking movement brings the locking lever 16 in the functional position II "locked", as in FIG. 3a shown. The locking movement can be as in FIG. 2a either a locking movement V1 of the inner lock acts on the Innenverriegelungsarm 29 and thus on the locking lever inner part 21, whereby the locking lever 16 is rotated in total and thus the central locking element 17 is brought into the corresponding angular position II. Or the locking movement V2 of the outer latch acts on the outer locking cam 26 on the central locking element 17 and brings this in the angular position II. Or the locking movement V3 of the central locking drive, not shown, rotates the central locking element 17 directly in the angular position II. In the two last cases, the movement of Central locking element 17 via the control cam 23 and the control groove 24 transmitted to the locking lever 16.

As in FIG. 3a shown, the transmission element 18 is "locked" in a transmission position when the locking lever 16 is in the functional position II "locked". This transfer position "locked" is characterized in that the transfer cam 32 is outside the range of movement of the actuating cam 34 to the pawl axis 7. As in FIG. 3b shown, an actuating movement B of the actuating lever 10 into the "void", since the outside of the sphere of action of the actuating cam 34 shifted transfer cam 32, the latch arm 33 can not touch or move. But this does not open the lock despite an operation of indoor or outdoor operation. Accordingly, the state of the castle in the FIGS. 3a and 3b "locked" and "closed", in FIG. 3b additionally "actuated".

By means of an unlocking movement of the locking lever 16 is placed in the functional position I "unlocked", as in FIG. 2a shown. The unlocking movement can be as in FIG. 3a either an unlocking movement E1 of the inner lock acts on the Innenverriegelungsarm 29 and thus on the locking lever inner part 21, whereby the locking lever 16 is rotated in total and thus the central locking element 17 is brought into the corresponding angular position I. Or the unlocking E2 of the outer latch acts on the outer locking cam 26 on the central locking element 17 and brings this in the angular position I. Or the unlocking E3 of the central locking drive, not shown, rotates the central locking element 17 directly in the angular position I. In the last two cases, the movement of Central locking element 17 via the control cam 23 and the control groove 24 transmitted to the locking lever 16. The process corresponds substantially exactly the reverse of the locking movements V1 to V3 described above.

For theft protection, an additional locking movement V4 is provided, which is applied via the central locking drive, not shown on the central locking element 17 and whereby this is spent from the angular position II in the angular position III "theft-proof" as in FIG. 4a shown. In this case, the control cam 23 moves in the cam 24 in a blocking position on a profile projection 35 of the cam 24 and thus spends the locking lever 16 in a functional position III "theft-proof". Such a locking movement could also be applied via the external locking cam 26 in the arrangement shown. However, this is not absolutely necessary and is therefore prevented as a rule by appropriate play in the transmission chain of the external locking. A locking movement can not be applied via the internal locking, since the control groove 24 and control cam 23 are adjusted so that this movement is not transmitted to the central locking element 17. Thus, the angular position III or

Functional position III can only be achieved by acting on the central locking element 17 locking movement V4 of the central locking drive.

With regard to the effect of the transmission element 17, the functional position II and III of the locking lever 16 do not differ. In both cases, the transfer cam 32 is in a transfer position "locked" outside the sphere of operation of the actuating cam 34 so that even in the functional position III "theft-proof" of the locking lever 16 is an actuating movement B of the actuating lever as in FIG. 3b shown in the "emptiness" goes and the pawl 4 is not moved.

The locking lever 16 is normally moved from the functional position III "theft-proof" into the functional position II "locked" with the unlocking movement E4 by the central locking drive 17 rotates the central locking element in the angular position II. In case of emergency release, d. H. If the central locking drive has failed, the central locking element 17 can also be brought into the angular position II by means of the unlocking movement E5 via the external locking. This is then done via acting on the outer locking cam 26 outer locking bar 27 and the cooperating lock cylinder. In the two cases, the movement of the central locking element 17 via the control cam 23 and the control groove 24 is transmitted to the locking lever 16. The process corresponds substantially inversely to the locking movement V4 described above.

The special function of theft protection consists in the interaction of the control cam 23 and the control groove 24 in the blockage position as already described above. If an attempt is made to "lock out" the locking lever 16 by means of an unlocking movement E6 from functional position III into the functional position II, the profile projection 35 of the locking lever 16 presses on the control cam 23. The direction of the resultant Entriegelungskraft Fe between control cam 23 and profile projection 35 extends slightly offset from the central locking axis 22. This results in the central locking element 17 is a low resulting torque, which would rotate the central locking element 17 in the locking direction V. However, since the central locking element 17 is supported in the angular position III in the locking direction V on the lock housing, the central locking element 17 can not be rotated from its blocking position in the angular position III "theft-proof" by means of the unlocking movement E6. The control cam 23 of the central locking element 17 blocks the locking lever 16, whereby the lock can not be unlocked by the inner latch and thus can not be opened.

As a further improvement of this functionality, the locking lever 16 shown is divided into two parts. In this case, the locking lever central part 20, the control groove 24 and is accordingly blocked in the functional position III "theft-proof". In contrast, the locking lever inner part 21 is indeed also rotatably mounted on the same locking lever axis 19, but arranged opposite the locking lever central part 20 rotatable. A rotational force coupling between the two parts takes place by a coupling cam 36 is arranged on the locking lever central part 20, which engages in a coupling groove 37 of the locking lever inner part 21. A coupling spring 38 arranged in the coupling groove 37 presses the coupling cam 36 against a rear wall 39 of the coupling groove 37.

In FIG. 4b It is shown how the unlocking movement E6 acts on the locking lever inner part 21 by twisting under load of the coupling spring 38 relative to the locking lever central part 20. Thus the unlocking movement E6 goes into the "void". Although the locking lever inner 21, the functional position I "unlocked" as in FIGS. 2a and 2b has been reached, however, the locking lever central part 20 remains in the functional position III "theft-proof". Thus the unlocking movement E6 goes into the "void". Since the transmission element 18 on Locking lever central part 20 is fixed, also the lock remains in the "locked" position, although in FIG. 4b the inside lock is "actuated".

If the locking lever central part 20 is not blocked, that is "locked" in the functional position II, the transferable force of the coupling spring 38 is sufficient to "unlock" the locking lever central part 20 at an unlocking movement E1 of the internal locking of functional position II "locked" to functional position I to spend. In the reverse movement, the locking movement V1, the rear wall 39 of the coupling groove 37 acts directly against the coupling cam 36 so that there is a positive connection between the locking lever central part 20 and locking lever inner part 21.

designations

1

Lock

2

lock plate

3

catch

4

pawl

5

Rotary latch axis

6

Rotating cowl neck

7

Pawl axis

8th

Latch projection

9

Rotary latch paragraph

10

actuating lever

11

External operating lever

12

Outside operating axis

13

Bowdenzugbefestigung

14

Außenbetätigungsarm

15

Innenbetätigungsarm

16

locking lever

17

Central element

18

transmission element

19

Locking lever axis

20

Central locking lever part

21

Locking lever inner part

22

Central axis

23

control cam

24

control groove

25

mounting boss

26

External locking cam

27

Outside locking bar

28

Außenverriegelungsnut

29

Innenverriegelungsarm

30

bearing bolt

31

neckline

32

transmission cam

33

Klinkarm

34

actuating cam

35

lobe

36

coupling cams

37

coupling groove

38

coupling spring

39

wall

40

Lock cylinder housing

Claims (28)

Lock for a motor vehicle door, in particular with a rotary latch (3), in particular with a pawl (4), in particular with an actuating lever (10), in particular with an external control, in particular with an internal control, with - an external lock, - an internal lock, - A locking lever (16), and - A rotatably mounted central locking element (17), in particular designed for a drive by a central locking drive, in which the central locking element (17) can assume the three angular positions "unlocked", "locked" and "theft-proof",
the central locking element (17) has an eccentric control cam (23) which cooperates with the locking lever (16), and the control cam (23) blocks the locking lever (16) when the central locking element (17) is in the angular position "theft-proof", characterized in that
the inner lock acts directly on the locking lever (16) and the outer lock acts on the locking lever (16) via the central locking element (17). Lock according to claim 1,
characterized in that
by means of the external locking the central locking element (17) from the angular position "theft-proof" in the angular position "locked" and / or "unlocked" can be spent. Lock according to claim 1 or 2,
characterized in that
by means of the external locking the central locking element (17) from the angular position "locked" and / or "unlocked" in the angular position "theft-proof" can be spent. Lock according to claim 1 to 3,
characterized in that
the outer lock comprises a lock cylinder which is arranged in the lock housing (2). Lock according to one of the preceding claims,
characterized in that
the central locking member (17) has an outer locking cam (26) cooperating with the outer lock. Lock according to claim 5,
characterized in that
an outside lock bar (27) of the outside lock is connected to the outside lock cam (26). Lock according to claim 5 or 6,
characterized in that
the connection between the central locking element (17), in particular the outer locking cam (26), and the outer locking, in particular the outer locking rod (27), is subject to a predetermined clearance. Lock according to one of the preceding claims,
characterized in that
the lock (1) has a central locking drive with a motor which is connected in a gear with the central locking element (17). Lock according to claim 8,
characterized in that
the connection between the engine of the central locking drive and the central locking element (17) is subject to a predetermined clearance. Lock according to claim 8 or 9,
characterized in that
in the connection between the engine and central locking element (17), a spring-loaded return element is arranged. Lock according to claim 9,
characterized in that
the spring-loaded return element is coupled to the engine by gear and
the return element spring-loaded when switching off the motor returns to a rest position. Lock according to claim 10 or 11,
characterized in that
the return element has a driving cam, whereby the movement of the restoring element is transmitted to the central locking element, wherein the return element depending on the position of the central locking element (17) and depending on the direction of rotation of the engine has a certain idling before the central locking element (17) is actuated. Lock according to one of the preceding claims,
characterized in that
the control cam (23) cooperates with a control groove (24) in the locking lever (16). Lock according to claim 13,
characterized in that
the contour of the control groove (24) is shaped so that the control cam (23) in the angular position "theft-proof" to the control groove (24) that a resultant force Fe of the locking lever (16) on the control cam (23) substantially through an axis of rotation (22) of the central locking element (17) or so offset from the axis of rotation (22) runs, that the central locking element (17) would perform a locking movement due to the force acting Fe. Lock according to one of the preceding claims,
characterized in that
the locking lever (16) is divided in two into a locking lever central part (20), which cooperates with the central locking element (17), in particular the control cam (23), and a locking lever inner part (21), which interacts with the internal locking,
wherein locking lever central part (20) and locking lever inner part (21) are non-positively connected to each other. Lock according to claim 15,
characterized in that
Locking lever central part (20) and locking lever inner part (21) about a common locking lever axis (19) rotate. Lock according to claim 15 or 16,
characterized in that
Locking lever central part (20) and locking lever inner part (21) are non-positively connected via a coupling spring (38). Lock according to claim 15, 16 or 17,
characterized in that
Locking lever central part (20) and locking lever inner part (21) are positively connected via positive locking when the locking lever inner part (21) upon actuation of the inner locking system from the functional position "unlocked" in the functional position "locked" is moved and that locking lever central part (20) and locking lever inner part (21) are non-positively connected via the coupling spring (38) when the locking lever inner part is moved from the "locked" functional position to the "unlocked" functional position when the inner lock is actuated. Lock according to one of the preceding claims,
characterized in that
the lock (1) comprises an operating lever (10) actuated by an inside operation and an outside operation. Lock according to one of the preceding claims,
characterized in that
the lock (1) comprises an internal operating lever as part of the internal operation,
wherein the inside operating lever cooperates with an operating lever (10). Lock according to one of the preceding claims,
characterized in that
the lock (1) comprises an inside lock lever as part of the inside lock, the inside lock lever cooperating with the lock lever (16). Lock according to claims 20 and 21,
characterized in that
Inner operating lever and inner locking lever cooperate in such a way that an operation of the inner operating lever, the locking lever (16) from the functional position "locked" in the working position "unlocked" or vice versa spends. Lock according to one of the preceding claims,
characterized in that
a transmission element (18) with the locking lever (16), in the case of the two-part locking lever (16) with the Verriegelungshebelzentralteil (20), connected and is spent by this in the operating position "unlocked" or "locked". Lock according to claim 23,
characterized in that
the transmission element (18) is rotatably connected via a bolt connection (30) to the locking lever (16). Lock according to claim 23 or 24,
characterized in that
the lock has a pawl (4), in particular for triggering a rotary latch (3), and the transmission element (18) between pawl (4) and
an actuating lever (10) is arranged so that in the functional position "unlocked" the operation of the actuating lever (10) by means of the transmission element (18) on the pawl (4) is transmitted, and in the functional position "locked" no transmission of the operation of Actuating lever (10) on the pawl (4). Lock according to claim 25,
characterized in that
the transmission element (18) at the end of a transmission cam (32), wherein the transmission cam (32) in the functional position "unlocked" the motion transmission between the actuating lever (10) and pawl (4) is used. Lock according to one of claims 23 or 24,
characterized in that
the transmission element in the "locked" functional position blocks the movement of an actuating lever (10). Lock according to one of the preceding claims,
characterized in that the locking lever has an eccentric control cam, which cooperates with the central locking element, and the locking lever is locked in the functional position "locked" by the control cam when the central locking element is in the angular position "theft-proof".

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