Motor vehicle lock

Abstract

The invention relates to a motor vehicle lock having a latch (2) and a locking claw assembly (3), wherein the latch (2) can be pivoted into at least one closed position and into an open position, wherein the locking claw assembly (3) has a locking claw (5) which interacts with the latch (2) and which can be brought into a falling-in position and a lifting-out position, an intermediate lever (6) which interacts with the locking claw (5) and which can be brought into a basic position and a deflection position, and a locking part (7) which interacts with the intermediate lever (6) and which can be brought into a locking position and a release position. It is proposed that the locking part (7) has a contour arrangement (10) with a push contour (11) and that a force can be exerted by the locking part (7) via its push contour (11) onto the intermediate lever (6) when the locking part (7) is moved in its release direction (12), as a result of which a torque about an intermediate lever-pivot axis (6a) of the intermediate lever in a deflection direction (9) of the intermediate lever onto the intermediate lever (6) is generated.

Description

TECHNICAL FIELD

[0001] The invention relates to a motor vehicle lock with a latch and a locking claw assembly according to the preamble of claim 1. BACKGROUND

[0002] The motor vehicle lock can be associated with any closure element of a motor vehicle. The closure element comprises a tailgate, a tail cover, a front cover, in particular a motor cover, a side door or the like. These closure elements can be designed pivotable or can be designed in the manner of a sliding door.

[0003] The known motor vehicle lock from which the invention departs (EP 2492423 B1) has a latch which is pivotable about a geometric latch-pivot axis, which interacts in a customary manner with a closure part, in particular a closure bow. In order to lock the latch in its respective closed position, the motor vehicle lock has a locking claw assembly which consists of a locking claw, an intermediate lever and a lever-like locking part (in the following also referred to as locking lever). The locking claw which directly interacts with the latch is here pivotably supported on the intermediate lever about a geometric locking claw-pivot axis and thus follows the pivoting movement of the intermediate lever about its geometric intermediate lever-pivot axis. Here, the locking lever can be pivoted about a geometric locking part-pivot axis between a locking position and a release position. In the locking position, the locking lever locks the intermediate lever in a basic position against pivoting in its deflection direction. In the release position, the intermediate lever is released by the locking part. The force acting on the latch from the closure part, which force mainly results from the door seal counterpressure, is transmitted from the latch in its closed position via the falling locking claw onto the intermediate lever, so that the intermediate lever can be pivoted in its deflection direction when it is released by the locking part. As a result, the latch presses against the locking claw, while the intermediate lever is pivoted in its deflection direction.

[0004] This mechanical device works very reliably in the case of a free movement of the lever mechanism. However, under certain environmental conditions, for example in the case of very low outside temperatures, a jamming can occur, for example due to icing, by means of which it is difficult to pivot the intermediate lever in its deflection direction when the motor vehicle lock should be opened. SUMMARY

[0005] The invention is therefore based on the problem of optimizing the operating reliability of a motor vehicle lock under unfavorable environmental conditions, in particular in the case of a lower outside temperature.

[0006] The above-mentioned problem is solved in a motor vehicle lock according to the preamble of claim 1 by the features of the characterizing part of claim 1.

[0007] It is important that the following basic consideration is made, namely that in addition to its known locking function, the latching component, which is designed as a latching lever, in particular, is provided with an additional function. The additional function is that the latching component can force the intermediate lever to move in its deflection position direction when it is moved in its release direction. If the intermediate lever can now be jammed in its basic position as a result of adverse environmental conditions, the latching component can exert an additional force for deflecting the intermediate lever onto the intermediate lever. The possible jamming of the intermediate pressure lever is thereby reliably released, the intermediate pressure lever is "broken loose". Such a function is also referred to as an ice-breaking function.

[0008] It should be emphasized here in particular that the overall driven component of the latching claw assembly, namely the latching component, is equipped with an additional function, the ice-breaking function, which is carried out automatically by regular movement of the latching component in its release direction. The operating reliability of the motor vehicle lock is thereby significantly improved with simple means.

[0009] However, in principle, according to one preferred design of the motor vehicle lock, the intermediate lever can also be brought into its deflection position only or mainly by the force exerted onto it by the latch, when there is no jamming, for example as a result of icing or the like, and the latching claw can be lifted out. According to another preferred design, however, the pivoting of the intermediate lever can also be caused only or mainly by the movement of the latching component.

[0010] In detail, it is now proposed that the latching component has a profile arrangement with a push contour and that, when the latching component is moved, in particular driven by a motor, in its release direction, a force, in particular a pressure, can be exerted by the latching component via the push contour of the latching component onto the intermediate lever, as a result of which a torque onto the intermediate lever in the deflection direction of the intermediate lever about the intermediate lever-pivot axis of the intermediate lever arises. It is pointed out that the movement of the latching component can not only be motor-driven, but also, according to another embodiment, additionally or alternatively, be caused manually, in particular via a lever. Such a lever is coupled, for example, with a door handle, in particular a door handle inside or outside, in order to cause the movement of the latching component.

[0011] According to the preferred design according to claim 2, the profile arrangement of the latching component has a latching contour via which the locking function is implemented. The latching contour thus serves to lock the intermediate lever in the basic position against pivoting in the deflection direction of the intermediate lever about the geometric intermediate lever-pivot axis in the latching position of the latching component.

[0012] Claim 3 relates to a guide block, for example a protrusion, in particular a lug, of the intermediate lever, which can be guided along the push contour and / or along the blocking contour in order to ensure the force transmission between the blocking member and the intermediate lever.

[0013] Claim 4 states that, when the blocking member is moved from the blocking position into the release position and / or from the release position into the end position, a corresponding force can be exerted by the blocking member onto the intermediate lever, as a result of which a torque in the direction of deflection of the intermediate lever onto the intermediate lever occurs. The end position is a position which, from the direction of the blocking position, goes beyond the release position. It is thus conceivable that the blocking member, when starting its movement, in particular its pivoting movement, does not yet exert a force onto the intermediate lever from the blocking position, but first only releases the intermediate lever and then exerts the force onto the intermediate lever. Alternatively, however, it is also conceivable that the force is already exerted by the blocking member onto the intermediate lever at the start from the blocking position.

[0014] Claim 5 relates to an optional guide contour, which can also be a component part of the contour arrangement of the blocking member, and via which the intermediate lever can be braked when it is pivoted from its basic position into its deflected position. In this way, it can occur in the case of a latch with a greater pretensioning in the opening direction thereof that the intermediate lever is suddenly displaced in the direction of its deflected position when it is released by the blocking member. This can lead to an undesired development of noise, which is avoided by means of the guide contour of the blocking member. Alternatively or additionally, a suitable pretensioning of the intermediate lever against the direction of its deflection can also prevent such a sudden movement. Correspondingly, a separate guide contour can also be dispensed with.

[0015] According to a particularly preferred design according to claim 6, a closed slide is provided, which constitutes the push contour and the blocking contour. By a closed slide is meant that a contour is provided which completely surrounds on the inside, which contour comprises the push contour and the blocking contour. In this way, the blocking member is particularly stable and, for example, even in the case of a crash, can not deform in such a way that the blocking member is bent and releases the intermediate lever unintentionally. Alternatively or additionally, however, a stop member can also be provided which is fixed at the housing and prevents the blocking member, in particular the section of the blocking member which comprises the blocking contour, from being bent unintentionally.

[0016] According to a likewise preferred design according to claim 7, the intermediate lever forms a bell crank together with the blocking claw.

[0017] Claims 8 to 10 define a particularly preferred course of the force action line of the contact force between the intermediate lever and the latching component. This force action line particularly preferably extends through the latching component-pivot axis. However, in principle it is also possible for this force action line to extend alongside the latching component-pivot axis, preferably such that a torque onto the latching component in the latching direction of the latching component is always generated as a result of the force transmitted onto the intermediate lever on the latch side. However, in principle it is also possible to envisage the case in which the force action line extends alongside on the other side of the latching component-pivot axis.

[0018] Claim 11 relates to a particularly preferred course of the force action line of the contact force between the latch and the latching claw. Preferably, this force action line extends through the latching claw-pivot axis. However, here in principle other courses are also possible.

[0019] In claim 12 a particularly preferred arrangement of the pivot axes of the individual levers of the latching mechanism of the motor vehicle lock, i.e. the latch and the latching claw assembly, is specified. As already mentioned, the latching claw-pivot axis is preferably arranged on the intermediate lever.

[0020] Claim 13 relates to the possibility of pre-tensioning, in particular spring pre-tensioning, of the levers of the latching mechanism.

[0021] According to a particularly preferred design according to claim 14, a drive assembly, in particular a motor-driven drive assembly with an electric drive motor, is provided in order to drive the latching claw. Here, preferably the latching component-drive shaft extends through a housing wall of the motor vehicle lock (claim 15). This has the advantage that if the housing wall forms a partition wall between the wet side and the dry side of the motor vehicle lock, the drive train can be sealed in a simple manner through the through-going guide of the housing wall. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application is explained in more detail below on the basis of the drawings, which show only embodiments. Therein:

[0023] Figure 1 A motor vehicle with a motor vehicle lock assembly having a motor vehicle lock according to the present proposal, which is here built into a motor vehicle door, is shown,

[0024] Figure 2 An exploded view of a motor vehicle lock according to the present proposal together with a drive assembly is shown,

[0025] Figure 3 A schematic view of one embodiment of a motor vehicle lock according to the present proposal during the opening process shown in views a) to d), and

[0026] Figure 4A schematic representation of another embodiment of a motor vehicle lock according to the present proposal is shown in the opening process shown in the views a) to d). DETAILED DESCRIPTION

[0027] In Figure 1 A motor vehicle with an opened motor vehicle door as a closure element is shown exemplarily in Figure 1 The motor vehicle lock assembly is shown in the following in a perspective view and in a sectional view in

[0028] The motor vehicle lock assembly has a motor vehicle lock 1 according to the present proposal with a latch 2 and a latch pawl assembly 3, wherein the latch 2 is pivotable into at least one closed position, in particular a main closed position and if necessary a pre-closed position, in which the latch is in retaining engagement with a closure part 4, and into an opened position, in which the latch releases the closure part 4.

[0029] In the embodiment shown here and preferred in this respect, the motor vehicle lock 1 is associated with a closure element of the motor vehicle, shown here as a side door, and the closure part 4 is associated with the body of the motor vehicle. But the reverse case is also conceivable in principle.

[0030] As mentioned above, the motor vehicle lock 1 according to the present proposal can be associated with any closure element of the motor vehicle. In addition to a side door, the closure element also includes a tailgate, a tail cover, a front cover, in particular a motor cover, or the like. All the explanations in this respect also apply accordingly to all other types of closure elements.

[0031] The latch pawl assembly 3 has a pivotably supported latch pawl 5 which interacts with the latch 2 and which can be brought, in particular pivoted, into a falling-in position and a lifting-out position, a pivotably supported intermediate lever 6 which interacts with the latch pawl 5 and which can be brought, in particular pivoted, into a basic position and a deflected position, and a pivotably supported latch part 7, in particular a pivotably supported latch lever, which interacts with the intermediate lever 6 and which can be brought, in particular pivoted, into a latching position and a release position.

[0032] It is preferred here that, of the three components "latch pawl 5", "intermediate lever 6" and "latch part 7", the intermediate lever 6 and / or the latch part 7 cannot come into contact with the latch 2 and / or only the latch pawl 5 can come into contact with the latch 2. Additionally or alternatively, it is preferred that, of the two components "intermediate lever 6" and "latch part 7", the latch part 7 cannot come into contact with the latch pawl 5 and / or the latch 2 and / or only the intermediate lever 6 comes into contact or can come into contact with the latch pawl 5.

[0033] In a manner known per se, the latching claw 5 is in the drop-in position (a) when the lock bolt 2 is in the closed position (b) and in the raised position (c) when the lock bolt 2 is in the open position (d). Figure 3 a), Figure 4 a)) latches the lock bolt 2 in the respective closed position against pivoting in its opening direction 8, i.e. in the direction from its closed position to its open position, and in the drop-in position (a) when the lock bolt 2 is in the closed position (b) and in the raised position (c) when the lock bolt 2 is in the open position (d). Figure 3 c), Figure 4 c)) releases the lock bolt 2 in its opening direction 8.

[0034] The latching member 7, here a latching lever, is in the latching position (a) when the lock bolt 2 is in the closed position (b) and in the release position (c) when the lock bolt 2 is in the open position (d). Figure 3 a) and Figure 3 d), Figure 4 a) and Figure 4 d)) latches the intermediate lever 6 in the basic position against pivoting in its deflection direction 9, i.e. in the direction from its basic position to its deflection position, and in the release position (b) when the lock bolt 2 is in the closed position (c) and in the raised position (d) when the lock bolt 2 is in the open position. Figure 3 b), Figure 4 b)) releases the intermediate lever 6 in its deflection direction 9.

[0035] In the basic position of the intermediate lever 6, the latching claw 5 is in its drop-in position (a), in particular when the lock bolt 2 is in its closed position (b) or can be pivoted into its drop-in position (a), in particular in such a way that the lock bolt 2 is brought from its open position (d) into its closed position (c). Figure 3 a), Figure 4 a)) or can be pivoted into its drop-in position (a), in particular in such a way that the lock bolt 2 is brought from its open position (d) into its closed position (c). Figure 3 d), Figure 4 d)).

[0036] In pivoting from its basic position into its deflection position, the intermediate lever 6 brings the latching claw 5 into its raised position (c). Figure 3 c), Figure 4 c)).

[0037] In pivoting from its deflection position into its basic position, the intermediate lever 6 brings the latching claw 5 into a position from which the latching claw 5 is pivoted into the drop-in position (a) when the lock bolt 2 is brought from its open position (d) into its closed position (c). Figure 3 d), Figure 4 d)).

[0038] It is now important that the blocking component 7, here a blocking lever, has a profile arrangement 10 with a push profile 11 and that, when the blocking component 7 is moved, in particular driven by a motor, in its release direction 12, in particular pivoted, a force, in particular a pressure, can be exerted by the blocking component 7 via its push profile 11 onto the intermediate lever 6, which, as a result of this force, generates a torque about the intermediate lever-pivot axis 6a of the intermediate lever onto the intermediate lever 6 in the deflection direction 9 of the intermediate lever. The release direction 12 here is the direction from the blocking position of the blocking component 7 to its release position.

[0039] One significant advantage of this arrangement is that, with the same blocking component 7 and / or with the same profile arrangement 10, both functions, namely on the one hand the locking function and on the other hand the disassembly function or ice-breaking function, can be implemented. In this way, on the one hand, the intermediate lever 6 can be blocked via the profile arrangement 10 against pivoting in its deflection direction 9. But on the other hand, when the intermediate lever is no longer blocked by the blocking component 7, in particular when the intermediate lever 6 is stuck, for example as a result of icing, the intermediate lever 6 can also be forced to move in its deflection direction 9 with the same profile arrangement 10.

[0040] In order to provide the blocking, i.e. the locking function, the profile arrangement 10 here and preferably has a blocking profile 13, via which the intermediate lever 6, in the basic position, is blocked against pivoting in its deflection direction 9 in the blocking position. This is shown schematically in Figure 3 a) and Figure 4 a). Thus, a holding force is exerted from the blocking component 7 onto the intermediate lever 6 via the blocking profile 13. Here and preferably, the push profile 11 and the blocking profile 13 are spaced apart from one another and in particular face one another.

[0041] From this state, shown in Figure 3 a) and Figure 3 a), namely the closed state of the motor vehicle lock 1 according to the present proposal, the motor vehicle lock 1 is opened. This is shown schematically in Figure 4 b) to Figure 4 d) for the first embodiment and in Figure 3 b) to Figure 4 d) for the second embodiment.

[0042] In the closed state of the motor vehicle lock 1, the latch 2 is in its closed position and the blocking pawl 5 is in its drop-in position, i.e. the latch 2 is blocked in its opening direction 8. Here and preferably, the latch 2 is not in contact with the intermediate lever 6. The intermediate lever 6 is here in its basic position and the blocking component 7 is in its blocking position.

[0043] AsFigure 3 b) and Figure 4 b) shown, in order to open the motor vehicle lock 1, the blocking member 7 is now moved from its blocking position into its release position, where it is pivoted counterclockwise relative to the blocking position. Here and preferably, the intermediate lever 6 is always still in its basic position or is slightly deflected from the basic position in the direction of its deflected position. The deflection of the intermediate lever 6 is here and in the further development of the opening process achieved, for example, by a pivoting movement directed in the clockwise direction. In Figure 3 b) and Figure 4 b) shown, the blocking claw 5 is pivoted relative to the Figure 3 a) and Figure 4 a) shown, the falling-in position is slightly pivoted, here counterclockwise, wherein, however, the blocking claw 5 is always still falling in and the latch 2 is always still blocked accordingly. Here, the blocking claw 5 is moved from the position in which it is not stopped at the intermediate lever 6 to the position in which it is now stopped at the intermediate lever 6.

[0044] In Figure 3 c) and Figure 4 c) shown, the intermediate lever 6 is moved further, here in the clockwise direction, into its deflected position. This can be achieved by the force exerted by the latch 2 via the blocking claw 5 onto the intermediate lever 6 and / or by the rotational movement of the blocking member 7, here counterclockwise, driven, for example, by a motor. By moving the intermediate lever 6 into its deflected position, the blocking claw 5 is brought into its lifted-out position. The blocking claw 5 is then always still stopped at the intermediate lever 6, but is lifted out by the deflection of the intermediate lever 6 and thus releases the latch 2. Thus, in contrast to Figure 3 b) and Figure 4 b) shown, the blocking claw 5 is not moved relative to the intermediate lever 6. The blocking member 7 is here driven, in particular by a motor, through the release position in Figure 3 b) and Figure 4 b) shown, the blocking member 7 is moved out of the release position, i.e. into the end position. Here and preferably, this end position is the final position of the blocking member 7. The latch 2 is here pivoted relative to the closed position, here in the clockwise direction, about the geometric latch-pivot axis 2a due to the pretension acting on the latch. The closure member 4 is then no longer in retaining engagement with the latch 2.

[0045] Figure 3 d) and Figure 4d) Finally, the final state is shown, in which the blocking component 7 is moved back again into its blocking position and the intermediate lever 6 is moved back into its basic position. The latch 2 is here again in its open position. The blocking pawl 5 is here again lifted out, but is now no longer stopped at the intermediate lever 6, but is deflected relative to the intermediate lever 6, in particular further than in its lifted-out position and in particular further than in its lowered-in position. Thus, in contrast to the state in Figure 3 c) and Figure 3 c), the blocking pawl 5 is here pivoted relative to the intermediate lever 6, here in the clockwise direction, in particular beyond the position relative to the intermediate lever 6 shown in Figure 4 a) and Figure 4 a), the blocking pawl 5 is here pivoted relative to the intermediate lever 6, here in the clockwise direction, in particular beyond the position relative to the intermediate lever 6 shown in Figure 3 a) and Figure 4 a), the blocking pawl 5 is here pivoted relative to the intermediate lever 6, here in the clockwise direction, in particular beyond the position relative to the intermediate lever 6 shown in

[0046] Here and preferably, the guide block 14, preferably the protrusion, in particular the lug, of the intermediate lever 6 can be guided along the push contour 11 when the blocking component 7 is moved in its release direction 12 and / or along the blocking contour 13 when the blocking component 7 is moved from its release position into its blocking position. Here and preferably, this is a common guide block 14, which can be guided along the push contour 11 and along the blocking contour 13.

[0047] When the guide block 14 is guided along the push contour 11, a force is exerted by the blocking component 7 onto the intermediate lever 6, as a result of which a torque occurs onto the intermediate lever 6 in the deflection direction 9 of the intermediate lever. When the guide block 14 is guided along the blocking contour 13, a holding force occurs, which blocks the intermediate lever 6 against pivoting in its deflection direction 9.

[0048] It can furthermore be provided that, when the blocking component 7 is moved from the blocking position, in particular motor-driven, into the release position, a corresponding force, as a result of which a torque occurs onto the intermediate lever 6 in the deflection direction 9 of the intermediate lever, can already be exerted by the blocking component 7 onto the intermediate lever 6. However, it is here the case that the force can be exerted by the blocking component 7 onto the intermediate lever 6 only when the blocking component 7 is moved from its release position into its end position. It is also conceivable that the force can be exerted over the entire movement of the blocking component 7.

[0049] InFigure 3 In the embodiments described herein and preferably, the contour arrangement structure 10 of the locking member 7 also has a guide contour 15. After the locking member 7 moves from its locked position to its released position, the intermediate lever 6, in particular the guide block 14, or the guide block 14 of the intermediate lever 6, can be braked via the guide contour 15 as it pivots from its basic position to its deflected position.

[0050] This is preferably the case if there is no jamming of the intermediate lever 6 (e.g., due to icing) and the latch 2, via the falling locking pawl 5, applies a force to the intermediate lever 6 generated by the door seal counterpressure and, in particular, pre-tension, especially spring pre-tension (which generates a torque about its intermediate lever-pivot axis 6a along the deflection direction 9 of the intermediate lever 6). In this case, the pivoting of the intermediate lever 6 along its deflection direction 9 is braked. Therefore, the braking force resists the movement of the intermediate lever 6 via the locking member 7. In particular, no force is then applied to the intermediate lever 6 by the locking member 7 via its push profile 11.

[0051] according to Figure 4 Here, and preferably, the guide profile 15 and the pressing profile 11 are spaced apart from each other and, in particular, face each other. Additionally or alternatively, the guide profile 15 is adjacent to the locking profile 13, as is the case here.

[0052] But in principle, such as Figure 2 As shown, alternative implementations of the locking component 7 can also be conceived. Thus, in Figure 2 In one embodiment, after the locking member 7 moves from its locked position to its released position, the intermediate lever 6 cannot be braked by the locking member 7 as it pivots from its base position to its deflected position. Here, the locking member 7 does not have a separate guide profile.

[0053] exist ​ In the embodiments described, the contour arrangement structure 10 of the locking member 7 has a closed groove 16 that constructs a pushing contour 11 and a locking contour 13, and in particular, also constructs a guiding contour 15. Such a groove 16 results in high shape stability within the locking member 7, especially in the event of a collision. Additionally or alternatively, such as ​ As shown, a stop member 17 fixed to the housing may also be provided, which can resist the deformation of the locking member 7, especially in the event of a collision. Here, "fixed to the housing" means a rigid arrangement at the lock housing.

[0054] Here and preferably, it is also provided that the intermediate lever 6 forms, together with the blocking pawl 5, a bell crank mechanism 19. Such a mechanism, in which the blocking pawl 5 is pivotably supported on the intermediate lever 6, allows in a simple manner that the blocking pawl 5, with the intermediate lever 6 in the basic position, is stably held in its drop-in position and is released from this stable position in a simple manner, in particular with a small force expenditure, in that the blocking member 7 deflects the intermediate lever 6. Here, it is thereby also advantageous for the simple release of the blocking pawl 5 from its drop-in position and the movement into its lifted position, i.e. the lever arm of the intermediate lever 6 between its contact face for the engagement with the blocking contour 13 and the intermediate lever-pivot axis 6a is longer than the lever arm between the blocking pawl-pivot axis 5a and the intermediate lever-pivot axis 6a.

[0055] As ​ a) and ​ As shown in a), here and preferably, it is the case that, with the intermediate lever 6 in the basic position and the blocking member 7 in the blocking position, the blocking member 7 is in a support engagement with the intermediate lever 6 via a support face, in particular via the blocking contour 13, and the force line of action 20 of the contact force between the intermediate lever 6 and the blocking member 7 extends through the blocking member-pivot axis 7a.

[0056] That is to say, the blocking member 7 is not driven by the intermediate lever 6 via this support engagement in the direction opposite to the release direction 12 and in its release direction 12. The above-mentioned support engagement between the intermediate lever 6 and the blocking member 7 is also referred to in this special design as a "neutral engagement" or an "engagement with neutral design", since the force line of action 20 of the contact force between the intermediate lever 6 and the blocking member 7 extends through the blocking member-pivot axis 7a, so that no torque on the blocking member 7 occurs as a result of the force transmitted from the latch 2 via the blocking pawl 5 onto the intermediate lever 6. This is achieved here and preferably by the arc-shaped blocking contour 13 which extends concentrically around the blocking member-pivot axis 7a.

[0057] However, it is also conceivable according to another variant that the force line of action 20 of the contact force between the intermediate lever 6 and the blocking member 7 can also extend here from next to the blocking member-pivot axis 7a, so that a torque onto the blocking member 7 in the direction opposite to the release direction 12 always occurs as a result of the force transmitted to the intermediate lever 6.

[0058] That is to say, the latching component 7 is driven by the intermediate lever 6 via the support engagement in its latching direction. The above-mentioned support engagement between the intermediate lever 6 and the latching component 7 is also referred to in this particular design as an "engagement with a closing tendency" or an "engagement with a back-cut design", since the force action line 20 of the contact force between the intermediate lever 6 and the latching component 7 extends so far alongside the latching component-pivot axis 7a that a torque onto the latching component 7 in its latching direction always arises as a result of the force transmitted from the latch 2 onto the intermediate lever 6 via the latching pawl 5. Here, it is possible in principle to provide that the force action line 20 runs within or outside the friction cone of the two friction pairs "intermediate lever 6" and "latching component 7" when the intermediate lever 6 is in the basic position and the latching component 7 is in the latching position.

[0059] It is also conceivable in principle a variant in which the force action line 20 of the contact force between the intermediate lever 6 and the latching component 7 extends so far alongside the latching component-pivot axis 7a that a torque onto the latching component 7 in its release direction 12 always arises as a result of the force transmitted onto the intermediate lever 6.

[0060] That is to say, the latching component 7 is driven by the intermediate lever 6 via the support engagement in its latching direction. The above-mentioned support engagement between the intermediate lever 6 and the latching component 7 is also referred to in this particular design as an "engagement with a closing tendency" or an "engagement with a back-cut design", since the force action line 20 of the contact force between the intermediate lever 6 and the latching component 7 extends so far alongside the latching component-pivot axis 7a that a torque onto the latching component 7 in its latching direction always arises as a result of the force transmitted from the latch 2 onto the intermediate lever 6 via the latching pawl 5. Here, it is possible in principle to provide that the force action line 20 runs within or outside the friction cone of the two friction pairs "intermediate lever 6" and "latching component 7" when the intermediate lever 6 is in the basic position and the latching component 7 is in the latching position.

[0061] In order to ensure in the latter variant that the blocking member 7 is not displaced into the release position unintentionally, for example when driving over uneven ground or through a potholed road surface, with the intermediate lever 6 in the basic position and the blocking member 7 in the blocking position, as an additional measure it is preferably provided that the force action line 20 runs within the friction cone of the two friction pairs "intermediate lever 6" and "blocking member 7" with the intermediate lever 6 in the basic position and the blocking member 7 in the blocking position. Additionally or alternatively it is also possible to provide that the blocking member 7 is pretensioned in its blocking direction, in particular spring-pretensioned, that is to say pretensioned with a pretension which generates a torque onto the blocking member 7 in the blocking direction 12 of the blocking member which is greater than or equal to the torque onto the blocking member 7 in the blocking direction 12 of the blocking member which arises as a result of the force transmitted by the latch 2 onto the intermediate lever 6 via the blocking pawl 5. In the latter case it is even conceivable in principle that the force action line 20 runs outside the friction cone of the two friction pairs "intermediate lever 6" and "blocking member 7" with the intermediate lever 6 in the basic position and the blocking member 7 in the blocking position. Additionally or alternatively it is also possible to provide that the blocking member 7 is held in the blocking position by a drive assembly 21, in particular with an electric drive motor 22, by means of which the blocking member 7 can be adjusted.

[0062] Furthermore here and preferably, as ​ a) and ​ a) shown, in the case of the installation of the motor vehicle lock 1, in particular in a motor vehicle door, it is provided that, with the latch 2 in the closed position, in particular in the main closed position and / or in the pre-closed position, and with the blocking pawl 5 in the latched-in position, the blocking pawl 5 is in a support engagement with the latch 2 via a support face, and the force action line 23 of the contact force between the latch 2 and the blocking pawl 5 runs through the blocking pawl-pivot axis 5a.

[0063] According to another variant, which should also be mentioned for the sake of completeness, it is also conceivable in principle that the force action line 23 of the contact force between the latch 2 and the blocking pawl 5 runs past the blocking pawl-pivot axis 5a in such a way that a torque onto the blocking pawl 5 in the lifting direction 24 of the blocking pawl, that is to say in the direction out of the latched-in position of the blocking pawl, always arises as a result of the force transmitted by the closing member 4 onto the latch 2. As a result of this, the blocking pawl 5 is driven in the lifting direction 24 by the latch 2 via this support engagement. The above-mentioned support engagement between the latch 2 and the blocking pawl 5 is also referred to in this particular design as an "engagement with opening tendency" or as an "engagement with front-cut design".

[0064] According to another variation, it is conceivable that the line of action 23 of the contact force between the latch 2 and the locking pawl 5 extends beside the locking pawl-pivot axis 5a such that a torque is always generated on the locking pawl 5 in the opposite lifting direction 24 of the locking pawl due to the force transmitted to the latch 2 by the closing member 4. Thus, the locking pawl 5 is driven by the latch 2 in the opposite lifting direction 24 via this support engagement.

[0065] In the last two variants, it is also possible, in principle, that the line of action 23 of force extends within or outside the friction cones of the two friction pairs, “latch 2” and “locking pawl 5”.

[0066] Especially ​ As indicated, here and preferably, the geometry of the latch 2 (latch-pivot axis 2a) and / or the geometry of the intermediate lever 6 (intermediate lever-pivot axis 6a) and / or the geometry of the locking lever 7 (locking lever-pivot axis 7a) are fixed to the housing. "Fixed to the housing" here means a rigid arrangement at the lock housing, for example, a rigid arrangement at the closing plate 18. Here and preferably, the geometry of the locking pawl 5 (locking pawl-pivot axis 5a) is arranged on the intermediate lever 6 and moves with it. In principle, according to an embodiment not shown here, the locking pawl-pivot axis 5a may also be fixed to the housing.

[0067] In the illustrated and, in this regard, preferred embodiment, the latch 2 is preloaded, in particular by a spring, along its opening direction 8 and / or the locking pawl 5 against its lifting direction 24 and / or the intermediate lever 6, especially via the locking pawl 5, to its basic position and / or the locking member 7 along its locking direction. Here, and preferably, the same spring 25 preloads the locking pawl 5 and / or the intermediate lever 6 and / or the locking member 7. It is conceivable that the spring 25 preloads the corresponding members, especially the locking pawl 5 and the intermediate lever 6, via the same spring leg of the spring 25. It is also conceivable that the spring 25 preloads the corresponding members, especially the locking pawl 5 and / or the intermediate lever 6 on one hand and the locking member 7 on the other hand, via different spring legs of the spring 25.

[0068] As mentioned earlier, a drive assembly 21, particularly a motor-driven drive assembly 21 with an electric drive motor 22, can be provided to drive the locking member 7. The drive assembly 21, as described here, is preferably configured to drive the locking member 7 in the release direction 12 of the locking member and / or against the release direction 12. However, additionally or alternatively, manual operation via a manually operable operating lever, particularly an operating lever connected to a door handle 26, such as an interior or exterior door handle, is also conceivable.

[0069] at last, ​It is shown here and preferably that the lock component-drive shaft 27, which transmits the rotational movement here and preferably from the drive assembly 21, in particular from the drive motor 22, extends from the lock component 7 along the geometric lock component-pivot axis 7a through a housing wall 28 of the motor vehicle lock 1 to the drive assembly 21, the lock component 7 being arranged rotationally fixed relative to the lock component-drive shaft and the lock component-drive shaft extending coaxially to the geometric lock component-pivot axis 7a. It is shown here and preferably that the housing wall 28 forms a partition wall between a wet side 29 and a dry side 30 of the motor vehicle lock 1, also referred to as a wet space / dry space partition. Such a lead-through guide of the drive train between the wet side 29 and the dry side 30 can be sealed particularly easily. As such, here only one rotary shaft 27 leads through the housing wall 28, which can be sealed in a simple manner by means of an annular sealing element in the housing wall 28. In this way, the electric drive motor 22 and, if present, the microswitch on the dry side 30 of the motor vehicle lock 1 are optimally protected from moisture.

Claims

1. A motor vehicle lock having a lock bolt (2) and a locking claw assembly (3), wherein The latch (2) is pivotable into at least one closed position, in which the latch is in retaining engagement with a closure part (4), and into an open position, in which the latch releases the closure part (4), wherein the latch pawl assembly (3) has a pivotably mounted latch pawl (5) which interacts with the latch (2) and which can be brought into a dropped-in position and into a lifted-out position, a pivotably mounted intermediate lever (6) which interacts with the latch pawl (5) and which can be brought into a basic position and into a deflected position, and a pivotably mounted latching part (7) which interacts with the intermediate lever (6) and which can be brought into a latching position and into a release position, wherein the latch pawl (5) in the dropped-in position latches the latch (2) in the respective closed position against pivoting in an opening direction (8) of the latch and in the lifted-out position releases the latch (2) in the opening direction (8) of the latch, wherein the latching part (7) in the latching position latches the intermediate lever (6) in the basic position against pivoting in a deflection direction (9) of the intermediate lever and in the release position releases the intermediate lever (6) in the deflection direction (9) of the intermediate lever, wherein in the basic position of the intermediate lever (6) the latch pawl (5) is in or pivotable into the dropped-in position of the latch pawl, and wherein the intermediate lever (6) in pivoting from the basic position of the intermediate lever into the deflected position of the intermediate lever brings the latch pawl (5) into the lifted-out position of the latch pawl, characterized in that the latching part (7) has a profile arrangement (10) with a push profile (11), and in that a force can be exerted by the latching part (7) via the push profile (11) of the latching part onto the intermediate lever (6) when the latching part (7) is moved in a release direction (12) of the latching part, a torque about an intermediate lever-pivot axis (6a) of the intermediate lever in the deflection direction (9) of the intermediate lever onto the intermediate lever (6) arising as a result of the force.

2. Motor vehicle lock according to claim 1, characterized in that The profile arrangement (10) of the latching part (7) has a latching profile (13) via which the intermediate lever (6) in the basic position is latched against pivoting in the deflection direction (9) of the intermediate lever in the latching position.

3. Motor vehicle lock according to claim 2, characterized in that A guide block (14) of the intermediate lever (6) can be guided along the push profile (11) and / or along the latching profile (13).

4. Motor vehicle lock according to claim 1 or 2, characterized in that When the locking element (7) is moved from the locking position into the release position and / or from the release position into a final position, a corresponding force can be exerted by the locking element (7) onto the intermediate lever (6), as a result of which a torque onto the intermediate lever (6) in the direction of deflection (9) of the intermediate lever arises.

5. Motor vehicle lock according to claim 2 or 3, characterized in that The contour arrangement (10) of the locking element (7) has a guide contour (15) via which the intermediate lever (6) can be braked when pivoted from the basic position of the intermediate lever into the deflected position of the intermediate lever after the locking element (7) has been moved from the locking position of the locking element into the release position of the locking element.

6. Motor vehicle lock according to claim 2 or 3, characterized in that The contour arrangement (10) of the locking element (7) has a closed slide (16) which configures the push contour (11) and the locking contour (13).

7. Motor vehicle lock according to any one of claims 1 to 3, characterized in that The intermediate lever (6) forms a bell crank mechanism (19) together with the locking claw (5).

8. Motor vehicle lock according to any one of claims 1 to 3, characterized in that When the intermediate lever (6) is in the basic position and the locking element (7) is in the locking position, the locking element (7) is in supporting engagement with the intermediate lever (6) via a supporting surface, and the force line of action (20) of the contact force between the intermediate lever (6) and the locking element (7) extends through the locking element-pivot axis (7a).

9. Motor vehicle lock according to any one of claims 1 to 3, characterized in that When the intermediate lever (6) is in the basic position and the locking element (7) is in the locking position, the locking element (7) is in supporting engagement with the intermediate lever (6) via a supporting surface, and the force line of action (20) of the contact force between the intermediate lever (6) and the locking element (7) extends beside the locking element-pivot axis (7a) in such a way that a torque onto the locking element (7) in the release direction (12) of the locking element always arises as a result of the force transmitted onto the intermediate lever (6).

10. Motor vehicle lock according to any one of claims 1 to 3, characterized in that When the intermediate lever (6) is in the basic position and the locking element (7) is in the locking position, the locking element (7) is in supporting engagement with the intermediate lever (6) via a supporting surface, and the force line of action (20) of the contact force between the intermediate lever (6) and the locking element (7) extends beside the locking element-pivot axis (7a) in such a way that a torque onto the locking element (7) in the release direction (12) of the locking element always arises as a result of the force transmitted onto the intermediate lever (6).

11. Motor vehicle lock according to any one of claims 1 to 3, characterized in that When the locking bolt (2) is in the closed position and the locking claw (5) is in the dropped-in position, the locking claw (5) is in supporting engagement with the locking bolt (2) via a supporting surface, and the force line of action (23) of the contact force between the locking bolt (2) and the locking claw (5) extends through the locking claw-pivot axis (5a).

12. Motor vehicle lock according to any of claims 1 to 3, characterized in that The geometric latch-pivot axis (2a) of the latch (2) and / or the geometric intermediate lever-pivot axis (6a) of the intermediate lever (6) and / or the geometric blocking member-pivot axis (7a) of the blocking member (7) is fixed at the housing.

13. Motor vehicle lock according to any one of claims 1 to 3, characterized in that The latch (2) is pretensioned in the opening direction (8) of the latch and / or the blocking claw (5) is pretensioned against the lifting direction (24) of the blocking claw and / or the intermediate lever (6) into the basic position of the intermediate lever and / or the blocking member (7) in the blocking direction of the blocking member.

14. Motor vehicle lock according to any of claims 1 to 3, characterized in that A drive assembly (21) is provided, which is designed to drive the blocking member (7) in the release direction (12) of the blocking member and / or against the release direction (12) of the blocking member.

15. The automotive lock of claim 14, wherein A blocking member-drive shaft (27), which transmits a rotational movement from the drive assembly (21), extends from the blocking member (7) along the geometric blocking member-pivot axis (7a) through a housing wall (28) of the motor vehicle lock (1) to the drive assembly (21), the blocking member (7) being arranged rotationally fixed relative to the blocking member-drive shaft and the blocking member-drive shaft extending coaxially to the geometric blocking member-pivot axis (7a).

16. The automotive lock of claim 1, wherein The force is a pressure.

17. The automotive lock of claim 1, wherein The blocking member (7) is a blocking lever.

18. The automotive lock of claim 2, wherein The push contour (11) and the blocking contour (13) are spaced apart from one another.

19. The automotive lock of claim 18, wherein The push contour (11) and the blocking contour (13) face one another.

20. The automotive lock of claim 3, wherein A common guide block (14) is guided along the push contour (11) and along the blocking contour (13).

21. The automotive lock of claim 5, wherein The guide contour (15) and the push contour (11) are spaced apart from one another and / or the guide contour (15) adjoins the blocking contour (13), or, after the blocking member (7) has been brought from the blocking position of the blocking member into the release position of the blocking member, the intermediate lever (6) cannot be braked by the blocking member (7) when pivoted from the basic position of the intermediate lever into the deflected position of the intermediate lever.

22. The automotive lock of claim 21, wherein The guide contour (15) and the push contour (11) face one another.

23. The automotive lock of claim 5, wherein The contour arrangement (10) of the blocking member (7) has a closed slide (16), which also constitutes the guide contour (15).

24. The automotive lock of claim 12, wherein, The geometric blocking claw-pivot axis (5a) of the blocking claw (5) is arranged on the intermediate lever (6) and follows the movement of the intermediate lever or is fixed at the housing.

25. The automotive lock of claim 13, wherein, The same spring (25) pretensions the blocking claw (5) and / or the intermediate lever (6) and / or the blocking member (7).

26. The automotive lock of claim 14, wherein The drive assembly (21) is a motor-type drive assembly (21) with an electric drive motor (22).

27. The automotive lock of claim 15, wherein, The housing wall (28) forms a separating wall between the wet side (29) and the dry side (30) of the motor vehicle lock (1).

Images