Motor vehicle lock

Abstract

The invention relates to a motor vehicle lock, in particular a motor vehicle door lock, which is equipped with a locking mechanism mainly comprising a bolt (1) and a pawl (2). Furthermore, an actuating lever system (4, 5, 9) acting on the locking mechanism (1, 2) is provided, which actuating lever system comprises a coupling lever (9), the coupling lever (9) closing the actuating lever system (4, 5, 9) in the engaged state for loading the locking mechanism (1, 2) and opening the actuating lever system in the disengaged state. The coupling rod (9) interacts with the positioning rod (5) controlling the coupling rod for the purpose of switching between at least two stable end positions, i.e., the "engaged" position and the "disengaged" position. According to the invention, the positioning rod (5) engages with a pin (7) into a two-way guide (8) of the coupling rod (9). The two-stroke guide (8) is designed such that the pin (7) reaches its first end position along a first stroke (11) and reaches its second end position along a second stroke (12) separate from the first stroke by loading the positioning lever (5).

Description

Technical Field

[0001] The present invention relates to a motor vehicle lock, in particular a motor vehicle door lock, comprising a locking mechanism mainly composed of a lock tongue and a lock claw, and an operating lever system acting on the locking mechanism, wherein the operating lever system comprises a connecting rod, wherein the connecting rod closes the operating lever system in an engaged state to load the locking mechanism and disconnects the operating lever system in a disengaged state, wherein the connecting rod interacts with a positioning rod that controls the connecting rod in order to convert between at least two stable end positions, namely an "engaged" position and a "disengaged" position. Background Art

[0002] A motor vehicle lock, in particular a motor vehicle door lock, of the conventional structure of the aforementioned type, as described, for example, in the patent document DE 10 2019 133 654 A1 of the applicant, for example, has a coupling rod, which is received in or on an operating lever so as to be pivotable about an axis. For this purpose, the coupling rod has a control curve or a guide, into which the coupling rod can engage with a pin. Depending on the position of the coupling rod or its pin in the guide, the operating lever supporting the coupling rod can act on the release lever and, by means of the operating lever system closed in this way, the locking pawl is disengaged from its engagement with the locking tongue in the locked position of the locking mechanism. In this way, the associated motor vehicle lock or its locking mechanism is opened.

[0003] However, in addition to this engaged state of the coupling rod and the associated one stable end position, the coupling rod can also be pivoted relative to the actuating lever in such a way that the coupling rod cannot engage with the release lever when the actuating lever is loaded. In this case, the coupling rod assumes its disengaged state as a further stable second end position. In this case, the aforementioned control curve or guide is provided on the actuating lever in the prior art.

[0004] In this way, the above teaching achieves that the actuating lever can be locked and the locking mechanism can be unlocked simultaneously by means of an additionally provided electric drive unit. This has been proven in principle. The electric drive device or the associated drive unit is thus endowed with a dual function.

[0005] The subject matter of a similar prior art document DE 10 2019 127 109 A1 also describes a motor vehicle lock of this type. In this case, a coupling rod is also provided, which is guided by means of a guide. For this purpose, the coupling rod has a pin, which engages in the guide. The guide is arranged in or on the adjusting rod. Thus, by means of an electric drive device that is provided again, the rod system can be transferred to a closed operating position by means of an emergency operating lever.

[0006] The prior art has been proven in principle. However, due to the partially complex movement of the coupling rod together with its pin inside the guide, functional malfunctions or even failures may occur. The present invention will remedy this in general. Summary of the invention

[0007] The object of the present invention is to develop such a motor vehicle lock, in particular a motor vehicle door lock, in such a way that the functional safety is increased and failures are avoided.

[0008] In order to solve this technical problem, the present invention proposes, with respect to this type of motor vehicle lock, in particular a motor vehicle door lock, that the positioning rod is engaged in a two-way guide portion of a connecting rod using a pin portion, wherein the two-way guide portion is designed to enable the pin portion to reach a first terminal position of the pin portion along a first stroke by loading the positioning rod, and to enable the pin portion to reach a second terminal position of the pin portion along a second stroke separated from the first stroke.

[0009] Here, the two end positions, the first end position and the second end position, correspond to the engaged state and the disengaged state of the coupling rod, respectively. Both end positions are stably occupied here. Due to the different strokes for occupying the end positions, any failures are fundamentally avoided compared to the prior art.

[0010] In this case, within the scope of this embodiment, the first end position can correspond to the "engaged" position of the coupling rod, while the second end position corresponds to its "disengaged" functional position. Of course, the opposite measure can also be taken.

[0011] By guiding the guide in the guide of the coupling rod, any failure and malfunction have been fundamentally avoided. This can be basically attributed to the fact that the guide as a component of the coupling rod and the two-way guide, which is implemented here and according to the two-way structure of the present invention, ultimately acts and works according to the so-called ballpoint pen principle. "The first loading of the positioning rod" actually causes the positioning rod or its pin to occupy the first end position along the first stroke. The same is true for the coupling rod with the two-way guide, and the pin is transferred to its first end position in this way. This corresponds to a single press and locking mechanism in the case of a ballpoint pen.

[0012] According to the invention, "actuating the detent lever again (advantageously in the same actuation direction)" now results in the pin of the detent lever reaching and assuming the second end position along a second stroke extending separately from the first stroke. The same also applies to the coupling lever. In the case of a ballpoint pen, this corresponds to pressing and releasing the aforementioned lock again.

[0013] In this respect, it is essential according to the invention that the first stroke and the second stroke are separated from one another in terms of position and function, so that the first and second end positions of the pin of the latching lever in the two-way guide of the coupling lever and thus in the interior of the coupling lever are respectively assumed securely and stably as a whole. In this way, any malfunctions or irrelevant functional states cannot occur and are not observed according to the invention.

[0014] In order to realize and implement this in detail, the following design is further adopted, that is, the two-way guide as a component of the coupling rod has at least one separating stop that separates the two strokes from each other. In most cases, two separating stops are provided. In addition to the separating stop, an escape stop is also provided. In this case, the interaction between the escape stop and the separating stop ensures that the first stroke and the second stroke are separated from each other in terms of position and function and furthermore occupy the first end position and the second end position respectively stably and without mutual influence. As described above, for this purpose and advantageously according to the invention, the two separating stops and the escape stop are arranged in the guide of the coupling rod.

[0015] Advantageously, the coupling rod with the guide itself is equipped with a central zero position spring. The central zero position spring ensures that the guide or the coupling rod has and occupies an initial position from which the pivoting movement of the coupling rod and thus the pivoting movement of the guide carried by the coupling rod is respectively achieved against the spring force, and the central zero position spring accordingly ensures a reset action from this initial position. The central zero position spring can advantageously be designed as a helical torsion spring arranged on a support column of the coupling rod defining the rotation axis, the helical torsion spring having a winding section and two legs extending from the winding section. In most cases, the following measures are taken, namely, the winding section surrounds the support column, which itself defines the rotation axis for the coupling rod that can be pivoted relative to the rotation axis. In contrast, the two legs of the central zero position spring are respectively arranged on the edge side of the coupling rod or load the coupling rod accordingly.

[0016] Furthermore, the following measures are usually taken, that is, the positioning rod is equipped with a return spring. The return spring ensures that the positioning rod is preloaded or reset in the direction of the initial position. The coupling rod then transitions to the corresponding initial position with the positioning rod, because the positioning rod controls the coupling rod via the pin connected to it. In order to move the coupling rod via the positioning rod, the force of the return spring assigned to the positioning rod must be overcome.

[0017] Furthermore, the following design is advantageously adopted, that is, the positioning rod is equipped with a drive, for example an electric drive. Of course, the positioning rod can also be adjusted manually. When using the drive in question, the positioning rod can be controlled in such a way that the pin carried by the positioning rod moves in a two-way guide as a component of the coupling rod and assumes at least a first end position and a second end position. In this way, the position of the coupling rod is controlled and specified by the positioning rod.

[0018] Furthermore, the positioning lever is advantageously equipped at least in a two-arm manner with a pin arm with a pin and an actuating arm. The electric drive can act on the actuating arm and thus ensure a corresponding adjustment movement of the positioning lever and thus the coupling lever. In most cases, a further third arm is additionally provided, which is however also optional in principle. Further measures can be taken in this regard, that is, the arms of the positioning lever and thus the positioning lever as a whole are mounted so as to be rotatable about a common axis.

[0019] "Loading the operating arm of the positioning rod by means of an electric drive" can be realized and implemented in any conceivable manner and method. In addition to the manual operation mentioned above, it is also conceivable to "load the operating arm indirectly or directly, for example, via a lock cylinder". "Loading the operating arm by means of an electric drive" can also be achieved indirectly or directly. In the case of indirectly loading the operating arm of the positioning rod by means of an electric drive, in most cases an adjusting element is provided between the motor and the operating arm. The adjusting element can be, for example, a drive wheel on the output side of the electric drive, which is rotated by means of the motor. The rotation of the drive wheel itself is then transmitted to the operating arm and thus the positioning rod, which then swings around its axis and controls the coupling rod in the corresponding direction using the pin portion carried by it.

[0020] In this way, the functional positions of the safety unit, such as the "armed" position, can be realized in the engaged state of the coupling rod and the "secured" position can be realized in the disengaged state. In the "armed" position of the safety unit, the engaged coupling rod thus ensures that the actuating lever mechanism is mechanically closed and that "manual loading of the actuating lever mechanism by the outside door handle or the inside door handle, for example", results in the opening of the locking mechanism.

[0021] In contrast, the "safety" position of the safety unit and therefore the disengaged position of the coupling rod relative to the lever system or the lever mechanism corresponds to the situation in which the above-mentioned manual loading of the inner door handle or the outer door handle is ineffective for the locking mechanism. In addition to the function of the electric drive as a component of the safety unit, within the scope of the present invention, due to the achieved guide control of the coupling rod, the electric drive for the positioning rod can in principle also electrically open the locking mechanism involved, as described in detail in the prior art of this type according to DE 10 2019 133 654 A1. In either case, the guide is designed according to the present invention as a two-way guide inside the coupling rod, which has a first stroke and a second stroke separated therefrom and two stable end positions respectively achieved thereby, which ensures a structure that is particularly adapted to the function. This structure prevents any functional failure. This is a major advantage of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The invention is described in detail below with reference to the accompanying drawings which show only one embodiment; in which:

[0023] FIG. 1 shows a motor vehicle lock according to the invention in its starting position or in the “released” state of the safety unit, which is shown in solid lines and corresponds to the second end position according to FIG. 10 , and in the position of the coupling lever, which is shown in dashed lines, in its first end position,

[0024] 2 to 6 show the transition of the motor vehicle lock according to the invention from the initial position or the second end position according to FIG. 1 during the transition along the first stroke to the first end position in the view according to FIG. 6 ,

[0025] 7 to 10 show the travel of the positioning rod and therefore the connecting rod from the first end position corresponding to FIG. 6 along the second stroke to its stable second end position in the view according to FIG. 10 , which coincides with the above-mentioned initial position according to FIG. 1 . DETAILED DESCRIPTION

[0026] The motor vehicle lock is shown in the drawing, which is a motor vehicle door lock. The motor vehicle lock is simplified to its elements that are important for the invention. In practice, the motor vehicle lock or motor vehicle door lock has a locking mechanism 1, 2, which is only schematically outlined in FIG. 1, and includes a locking tongue 1 and a locking pawl 2. In addition, the locking pin 3, which is grasped by the locking tongue 1, as well as the release lever 4 and the coupling lever 9 can be seen.

[0027] The release lever 4 and the coupling lever 9 define as a whole an actuating lever system 4, 5, 9 which, in addition to the release lever 4 and the coupling lever 9, also includes a locking lever 5. The locking mechanism 1, 2 shown in FIG. 1 can be opened by means of the actuating lever system 4, 5, 9. The opening movement of the locking mechanism 1, 2 shown in FIG. 1 in the locked state corresponds, according to this embodiment, to the coupling lever 9 being in its engaged state shown in dashed lines. In contrast, the state of the coupling lever 9 shown in solid lines belongs to its disengaged position. Therefore, the associated safety unit, which includes the coupling lever 9, is in its “armed” position in the engaged state and occupies its “safety” position in the disengaged state of the coupling lever 9.

[0028] According to this exemplary embodiment, “the coupling lever 9 is transferred from its “disengaged” position, which is shown in solid lines, into its “engaged” position”, which corresponds to the coupling lever 9 performing a pivoting movement about its axis 10 in the counterclockwise direction.

[0029] In this case, the engagement state of the coupling lever 9 corresponding to the view shown in dashed lines in FIG. 1 causes the coupling lever 9 to act on the release lever 4 and cause the release lever 4 to pivot in the clockwise direction about its axis 10, thus the actuating lever mechanism or the actuating lever system 4, 5, 9, which is schematically sketched in FIG. 1 . As a result, the release lever 4 pivoting in the clockwise direction can rotate the pawl 2 in the counterclockwise direction, as schematically sketched in FIG. 1 . This causes the pawl 2 to disengage its locking engagement with the bolt 1 in the locked state of the locking mechanism 1, 2 shown there. The locking mechanism 1, 2 or the bolt 1 is opened, so that the bolt 1 is twisted open in the clockwise direction schematically sketched in FIG. 1 and releases the locking pin 3. The associated motor vehicle door, which is not explicitly shown, is also released.

[0030] In summary, the following design is adopted as a whole, that is, the operating lever system 4, 5, 9 acting on the locking mechanism 1, 2 is equipped with the above-mentioned connecting rod 9. In its engaged state, which is shown in dashed lines in FIG. 1, the connecting rod 9 ensures that the operating lever system 4, 5, 9 is closed to load the locking mechanism 1, 2. In contrast, the disengaged state of the connecting rod 9, which is shown in solid lines in FIG. 1 and is occupied, corresponds to the operating lever system 4, 5, 9 being disconnected. Therefore, the corresponding loading of the operating lever and thus the connecting rod 9 has no effect on the locking mechanism 1, 2. In this case, the locking mechanism cannot be opened.

[0031] In order to enable the coupling rod 9 to be reliably moved back and forth between the two previously described stable end positions, i.e. between the disengaged state of the coupling rod 9 shown in solid lines in FIG. 1 or the initial position presented here and the engaged position according to the view shown in dashed lines or corresponding to the functional position in FIG. 6 and to prevent functional failures, the above-mentioned locking lever 5 is provided, which is supported in a rotatable manner about an associated axis 6. The locking lever 5 has a pin 7. Here, the pin 7 engages in a two-way guide 8 of the coupling rod 9. For this purpose, the two-way guide 8 is designed so that, by loading the locking lever 5, the pin 7 reaches its first end position corresponding to the view in FIG. 6 along a first stroke 11 and reaches its second end position along a second stroke 12 separated therefrom, which is shown in FIG. 10 and FIG. 1. In fact, the second end position corresponds to the position of the coupling rod 9 shown in solid lines in FIG. 1, while the position of the coupling rod 9 shown in dashed lines (in FIG. 1) corresponds to the first end position in FIG. 6.

[0032] For this purpose, the locking lever 5 is designed as an adjusting lever, as it is fundamentally also provided in similar motor vehicle locks, in particular in the prior art of the type described according to DE 10 2019 133 654 A1. As described, the pin 7 on the locking lever 5 can pass a first stroke 11 as a whole in the guide 8 of the coupling rod 9 until it reaches the first end position of the pin 7 in the functional position according to FIG. 6. In addition, the pin 7 can complete a second stroke 12, namely from the first end position corresponding to the view in FIG. 6 to the second end position, as shown in FIG. 10 and in the same way by the solid line in the initial position according to FIG. 1. Within the scope of this embodiment, the second end position corresponding to FIG. 1 or FIG. 10 can correspond to the "safety" position of the safety unit, which corresponds to the "disengaged" state of the coupling rod 9. In contrast, the first end position in the functional position according to FIG. 6 is the "released" state of the safety unit, which corresponds to the "engaged" functional position of the coupling rod 9.

[0033] The safety unit can in principle be a locking unit, a childproof lock locking unit, an anti-theft lock locking unit or a combination thereof.

[0034] It can be seen that the guide 8 is not only designed as a two-way guide 8, but also designed so that, by loading the positioning rod 5, the pin 7 reaches the first end position in FIG. 6 along its first stroke 11 and after loading the positioning rod 5 again (in the same actuation direction), it transitions to the second end position corresponding to the view of FIG. 10 or shown in FIG. 1 in solid lines along a second stroke 12 separated therefrom. Here, the two strokes 11, 12 are separated from each other in terms of position and function. Here, the loading of the positioning rod 5 is realized by a drive device, which is designed as an electric drive device 15 in this embodiment and is only basically shown in FIG. 1. In fact, the electric drive device 15 has an electric motor, which acts on the output-side driven disk, which in turn acts on the operating arm 5a of the positioning rod 5. In addition to the operating arm 5a, the positioning rod 5 also has a pin arm 5b, which carries the pin 7 entering the two-way guide 8. Within the scope of this embodiment, another third arm 5c is also provided, but this third arm is also optional in principle. In this case, the two arms 5 a , 5 b or all three arms 5 a , 5 b and 5 c of the positioning lever 5 are mounted as a whole so as to be rotatable about a common axis 6 .

[0035] According to this embodiment, the above-mentioned separation of the two strokes 11, 12 from each other in terms of position and function is achieved in that the guide 8 acts according to the ballpoint pen principle already described at the beginning. Starting from the functional position in FIG. 1 or corresponding to the second end position according to FIG. 10, the first loading of the positioning rod 5 causes the pin 7 arranged on the pin arm 5b of the positioning rod 5 to transition to the first end position according to FIG. 6 and to be locked or fixed there to a certain extent. For this purpose, the two-way guide 8 is equipped with a separation stop 81 that separates the two strokes 11, 12 from each other. According to this embodiment, two separation stops 81, 82 are provided. In addition to the two separation stops 81, 82, an avoidance stop 83 can also be seen.

[0036] Here, the two separating stops 81, 82 are located on both sides of the avoidance stop 83, which is opposite to the recess formed between the two separating stops 81, 82, and the pin portion 7 enters the recess at the end of the first stroke 11 and is held against the separating stop 82 in the first terminal position corresponding to Figure 6.

[0037] The coupling rod 9 is equipped with a central zero spring 13, which is only schematically outlined. According to the exemplary embodiment, the central zero spring 13 is designed as a helical torsion spring and surrounds the support column that defines the shaft 10 of the coupling rod 9 with its winding section. In addition, two legs are provided, which extend from the winding section. The positioning rod 5 itself is equipped with a return spring 14, which ensures that the positioning rod 5 is transferred to its initial position shown in Figures 1 and 10 or to the stable second end position (the "safety" position of the safety unit or the "disengaged" position of the coupling rod 9).

[0038] The operating principle is as follows. Starting from the second end position or initial position (“safety” position or “disengagement” position) of the coupling rod 9, which is shown in solid lines in FIG. 1 or in FIG. 10, the action of the locking rod 5 or its actuating arm 5a in the counterclockwise direction, which is schematically outlined in FIG. 1, about its axis 6 by means of the electric drive 15 causes the pin 7 to perform a first stroke 11 in the guide 8 starting from the second end position or initial position in FIG. 1. This can be seen in the transition from FIG. 1 to FIG. 2. In this process, the return spring 14 that loads the locking rod 5 is preloaded. At the same time, the pin 7 ensures that the coupling rod 9 with the guide 8 is slightly swung in the counterclockwise direction about its axis 10 during the transition from FIG. 1 to FIG. 2 when it moves along the first stroke 11 in the guide 8.

[0039] At this time, the pin 7 on the pin arm 5b of the positioning rod 5 continues to move along the first stroke 11 until the pin 7 reaches the end position shown in FIG. 3 in the guide 8. At this time, the positioning rod 5 is deflected maximally around its axis 6 and finally reaches the "engaged" position of the coupling rod 9 presented in dashed lines in FIG. 1. When the pin 7 moves further in the guide 8 during the transition from FIG. 3 to FIG. 4, the central zero spring 13 that loads the coupling rod 9 ensures that the coupling rod 9 and therefore the guide 8 are reset. At this time, during the transition from FIG. 1 to FIG. 2 and further to FIG. 3, the coupling rod 9 together with the guide 8 swings in the counterclockwise direction around its axis 10, so that the central zero spring 13 has been deflected. Now, the central zero spring 13 ensures that the coupling rod 9 and therefore the guide 8 are reset in the counterclockwise direction after reaching the functional position in FIG. 3, as can be seen from the transition from FIG. 3 to FIG. 4. Now, the pin 7 rests on the avoidance stop 83.

[0040] As a result, the reset spring 14 loading the positioning rod 5 can reset the positioning rod 5 in the clockwise direction during the transition from FIG. 4 to FIG. 5 to such an extent that the pin 7 abuts against the recess between the two separating stops 81 and 82. FIG. 5 shows this. Now, during the further transition from FIG. 5 to FIG. 6, the central zero spring 13 again ensures that the coupling rod 9 and therefore the guide part 8 are loaded in the clockwise direction around the axis 10 in the direction of the initial position of the coupling rod 9 and the guide part 8 corresponding to the view in FIG. 1. Thus, at the end of the first stroke 11, the pin 7 is moved so that it reaches the first end position, as shown in FIG. 6. Since the coupling rod 9 and therefore the guide part 8 are unchanged preloaded (slightly) in the clockwise direction relative to the axis 10 by means of the central zero spring 13, they stably occupy this end position in FIG. 6.

[0041] In order to be able to transition from the stable first end position of the pin 7 to the second end position according to FIG. 10 or the functional position according to FIG. 1 in the “engaged” position of the guide 8 and thus the coupling rod 9 according to FIG. 6 or the “released” position of the safety unit, it is now necessary to load the locking rod 5 again so that the pin 7 can complete the second stroke 12 separated from the first stroke 11 until the second end position in the view according to FIG. 10 is reached. This process can be seen in the transition from FIG. 6 to FIG. 7. In fact, the loading of the locking rod 5 by means of the electric drive 15 in this case corresponds to loading the locking rod 5 again in the counterclockwise direction about its axis 6.

[0042] For this purpose, the associated actuating arm 5a of the positioning rod 5 can be loaded manually or, according to this embodiment, by means of an electric drive 15, as has already been explained above in the description. That is, similar to the ballpoint pen principle already explained, the reloading of the positioning rod 5 ensures that the previously achieved locking is released and can be released after the pin 7 has completed the first stroke 11, or the first end position in the view according to FIG. 6 is reached. Now, in the transition from FIG. 6 to FIG. 7, the "positioning rod 5 is loaded in the counterclockwise direction around its axis 6 on its actuating arm 5a" causes the pin 7 to leave the lower dividing stop 82. As a result, the central zero spring 13 can load the coupling rod 9 in the counterclockwise direction around its axis 10, and the pin 7 transitions from the functional position according to FIG. 7 to the position according to FIG. 8.

[0043] Now, starting from the functional position of the pin 7 in FIG. 8 , the return spring 14 acting on the positioning lever 5 ensures that the positioning lever 5 is pivoted about its axis 6 in the clockwise direction and thus moves along the second stroke 12 toward its second end position corresponding to the view in FIG. 10 or FIG. 1 . This can be seen in the transition from FIG. 8 to FIG. 9 . The return spring 14 acting on the positioning lever 5 ensures in this process that the positioning lever 5 is pivoted about its axis 6 in the clockwise direction. Furthermore, the pin 7 at the end of the pin arm 5 b of the positioning lever 5, which is moved along the second stroke 12, pivots the coupling lever 9 and therefore the guide 8 about the axis 10 in the clockwise direction beyond the initial position shown in FIG. 1 , as can be seen in the transition from FIG. 8 to FIG. 9 .

[0044] Once the pin 7 has reached the free region there at the end of the second stroke 12, the coupling rod 9 can be reset again by means of the central zero spring 13, which corresponds to a pivoting of the coupling rod 9 and thus the guide 8 about the associated axis 10 in the counterclockwise direction, as can be seen in the transition from FIG. 9 to FIG. 10. The positioning rod 5 or the coupling rod 9 has now reached its second end position, which corresponds to the initial position in FIG. 1, as shown in FIG. 10 at the end of the second stroke 12.

[0045] List of reference numerals:

[0046] 1 Lock tongue

[0047] 2 Locking claws

[0048] 3 Lock pin

[0049] 4 Release lever

[0050] 5 Positioning rod

[0051] 5a Manipulator arm

[0052] 5b Pin arm

[0053] 5c Optional third arm

[0054] 6 Common axis

[0055] 7 Sales Department

[0056] 8 Two-way guide

[0057] 81 first separation stopper

[0058] 82 second separation stopper

[0059] 83 Avoidance stop

[0060] 9 Connecting rod

[0061] 10 Rotation axis

[0062] 11 First Trip

[0063] 12 Second Journey

[0064] 13 Center zero spring

[0065] 14 Return spring

[0066] 15 Electric drive

Claims

1. A motor vehicle lock, in particular a motor vehicle door lock, comprising a locking mechanism mainly composed of a lock tongue (1) and a lock claw (2), and an operating lever system (4, 5, 9) acting on the locking mechanism (1, 2), wherein the operating lever system comprises a connecting rod (9), wherein: The coupling rod (9) closes the operating lever system (4, 5, 9) in the engaged state to load the locking mechanism (1, 2) and disconnects the operating lever system in the disengaged state, wherein the coupling rod (9) interacts with a positioning rod (5) controlling the coupling rod for switching between at least two stable end positions, namely an "engaged" position and a "disengaged" position. It is characterized in that The positioning rod (5) is engaged with a pin portion (7) in a two-way guide portion (8) of a coupling rod (9), and the two-way guide portion (8) is designed so that, by loading the positioning rod (5), the pin portion (7) reaches a first end position of the pin portion along a first stroke (11) and reaches a second end position of the pin portion along a second stroke (12) separated from the first stroke.

2. The motor vehicle lock according to claim 1, characterized in that: The double-stroke guide (8) has at least one separating stop (81, 82) for separating two strokes (11, 12) from each other.

3. The motor vehicle lock according to claim 2, characterized in that: In addition to the separation stop parts (81, 82), an avoidance stop part (83) is also provided.

4. The motor vehicle lock according to claim 2 or 3, characterized in that: Two separation stop portions (81, 82) and an avoidance stop portion (83) are arranged in the guide portion (8).

5. The motor vehicle lock according to any one of claims 1 to 4, characterized in that: The coupling rod (9) is equipped with a central zero position spring (13).

6. The motor vehicle lock according to claim 5, characterized in that: The central zero spring (13) is designed as a helical torsion spring arranged on a support column of the coupling rod (9) defining the rotation axis (10), and the helical torsion spring has a winding section and two legs extending from the winding section.

7. The motor vehicle lock according to any one of claims 1 to 6, characterized in that: The positioning rod (5) has a return spring (14).

8. The motor vehicle lock according to any one of claims 1 to 7, characterized in that: The positioning rod (5) is equipped with a drive device, for example an electric drive device (15).

9. The motor vehicle lock according to any one of claims 1 to 8, characterized in that: The positioning lever (5) is equipped at least in a two-arm manner with a pin arm (5b) having a pin portion (7) and an actuating arm (5a), and optionally a third arm (5c).

10. The motor vehicle lock according to claim 9, characterized in that: The manipulator arm (5a) and the pin arm (5b) are mounted so as to be rotatable about a common axis (6).

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