EP3012392B1 - Locking device for a motor vehicle component - Google Patents

Description

The invention relates to a locking mechanism for a motor vehicle component according to the preamble of claim 1 and to a motor vehicle component having such a locking mechanism according to claim 12.

The locking device in question is used in a motor vehicle wherever high holding forces must be absorbed in the locked state. In the foreground here is the application of the barrier on a motor vehicle lock, which in turn can find application in all types of fasteners of a motor vehicle. These include, for example, side doors, in particular sliding doors, tailgates, trunk lids, hoods, load compartment floors o. The like. Of a motor vehicle.

The locking mechanism in question can also be used for other motor vehicle components, such as safety belt systems, seat adjusters, steering wheel locks o. The like.

The well-known barrage ( DE 20 2013 004 589 U1 ), from which the invention proceeds, is associated with a motor vehicle lock. It has a designed as a lock case holding part, which is associated with a designed as a pawl locking part. In a locked state, the latch is locked in its prelocking or in its main closed position, so that the latch can not swing into its open position. In the closed positions, the latch is in holding engagement with a striker such that the associated closure is held in its respective closed position. The release of the latch by the pawl leads to the adjustability of the latch in its open position, in which the latch releases the striker and thus the closure element.

In the known blocking mechanism, the blocking part and the holding part each have a blocking surface, which are in blocking state with each other in locking engagement and lock a corresponding pivoting movement of the holding part in the direction of the open position. The blocking surface of the latch is arranged on the outer circumference of the latch and designed to extend substantially along the holding part axis.

A challenge with the known barrier is the guarantee of a high crash safety. In certain crash situations, high holding forces act on the striker, which can lead to a deformation of structural parts of the motor vehicle lock. Such deformation is often associated with a relative to the holding part axis axial offset between the locking surfaces. In extreme cases, the necessary for the blocking engagement, necessary overlap between the locking surfaces is no longer given, so that the pawl slips off the latch. To avoid such slippage, the known motor vehicle lock must be designed in a particularly robust design. These include the use of relatively expensive materials and the equally costly realization of high wall thicknesses of the structural parts involved.

Another known barrage ( FR 1 594 900 A ) has a latch and a latch associated with the pawl, wherein the pawl can axially support the latch in a crash situation.

The invention is based on the problem, the known barrier work in such a way and further, that a high crash safety can be guaranteed with low cost.

The above problem is solved in a barrier according to the preamble of claim 1 by the features of the characterizing part of claim 1. Essential is the fundamental consideration that it is important to ensure the locking engagement in the first place to limit the relative to the holding part axis axial offset between the locking surfaces. It can basically be accepted that both interlocking locking surfaces undergo an axial movement in the event of a crash. Against this background, it is proposed that in the blocking state to limit an axial offset relative to the holding part axis between the blocking surfaces, a support surface of the blocking part and a support surface of the holding part are in axially abstützendem engagement or can be brought into axially supporting engagement.

With the proposed solution, a cost-effective design of the components of the barrier is possible because the functionally necessary, relative positioning of the locking surfaces is ensured to each other, even if the locking surfaces are each moved axially. Such axial displacement can, As mentioned above, occur due to the holding forces occurring in the event of a crash.

In the preferred embodiment according to claim 2, it is such that in normal operation, the support surface of the holding part and the support surface of the locking member are disengaged from each other. This ensures that the support surfaces do not interfere with the function of the barrier in normal operation.

In the further preferred embodiment according to claim 3, the supporting engagement takes place where it is necessary in the first place. Accordingly, it is provided here that the supporting engagement takes place in the vicinity of the locking engagement.

The support surfaces on the one hand and the blocking surfaces on the other hand, in the further preferred embodiment according to claim 7 with respect to the holding part axis arranged axially offset from one another. Hereby, the support surfaces on the one hand and the blocking surfaces on the other hand can be configured independently of each other, which allows structurally simple solutions. According to the invention, the motor vehicle component is designed as a motor vehicle lock with lock latch and pawl. The application of the proposed barrier to a motor vehicle lock is appropriate insofar as, as mentioned above, in the event of a crash, particularly high holding forces can act on the striker, which can lead to a deformation of the structural components of the motor vehicle lock involved.

A double use of the support surface providing support portion of the pawl according to the invention consists in the fact that the support portion additionally provides a Einfalltiefenbegrenzung for the pawl. This dual use leads to a structurally simple and especially compact design.

According to another teaching according to claim 12, which has independent significance, is the motor vehicle component, which with a proposed Barrier is equipped, claimed as such. Reference may be made to all versions of the proposed barrier.

In the preferred embodiment according to claim 13 is in the motor vehicle component to a motor vehicle lock mentioned above with latch and pawl. It is in a further preferred embodiment according to claim 13 such that the lock latch is included in the locked state between the support surface of the pawl and the strike plate. As a result, a particularly high crash safety in the above sense can be realized with simple design measures.

Fig. 1

ein vorschlagsgemäßes Kraftfahrzeugschloss mit einem vorschlagsgemäßen Sperrwerk mit den für die Erläuterung der Erfindung wesentlichen Komponenten bei in der Offenstellung befindlicher Schlossfalle in einer ganz schematischen Draufsicht,

Fig. 2

das Kraftfahrzeugschloss gemäß Fig. 1 a) bei in der Vorschließstellung befindlicher Schlossfalle und b) bei in der Hauptschließstellung befindlicher Schlossfalle und

Fig. 3

das Kraftfahrzeugschloss gemäß Fig. 1 im komplett montierten Zustand in einer perspektivischen, teilweise geschnittenen Ansicht.

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

Fig. 1

a proposed motor vehicle lock with a proposed barrier with the essential for the explanation of the invention components in located in the open position latch in a very schematic plan view,

Fig. 2

the motor vehicle lock according to Fig. 1 a) when in the Vorschließstellung located latch and b) located in the main closed position lock latch and

Fig. 3

the motor vehicle lock according to Fig. 1 in fully assembled condition in a perspective, partially sectioned view.

It may be pointed out in advance that in the drawing, only the components of the proposed blocking mechanism 1 and the proposed motor vehicle lock 2 are shown, which are necessary for the explanation of the teaching. For example, an optionally provided lock mechanism of the motor vehicle lock 2 for the realization of functional states such as "locked", "unlocked", "theft-proof" o. The like. Not shown.

The blocking mechanism 1 shown can be applied to various motor vehicle components of a motor vehicle. In the illustrated and insofar preferred embodiment, the locking mechanism 1 is a motor vehicle lock Assigned 2 designed automotive component. Accordingly, a designed as a lock latch 3, pivotable holding part 4 and designed as a pawl 5, pivotable locking member 6 are provided here. All versions of a holding part 4 apply to a latch 3 according to (and vice versa). All versions of a locking member 6 also apply to a pawl 5 accordingly (and vice versa).

The holding part 4 is in at least one closed position, here in the Vorschließstellung ( Fig. 2a ) and the main closing position ( Fig. 2b ), about a holding part axis 4a pivotally. Next, the holding part 4 in an open position ( Fig. 1 ) pivotable. The locking member 6 is pivotable about a locking part axis 6a. The holding part axis 4a and the locking part axis 6a are preferably spaced from each other, but arranged parallel to each other.

According to the proposal, a blocking state is provided, in which the blocking part 6 blocks a pivoting movement of the holding part 4 out of one of the two closed positions in the direction of the open position. For this purpose, the locking member 6 is pivotable in a locking position in which a locking surface 7 of the locking member 6 and a locking surface 8, 9 of the holding part 4 are in locking engagement with each other and pivotal movement of the holding part 4 as mentioned above, lock ( Fig. 2 ). It can be the Fig. 2a and 2b see that the holding part 4 has a first locking surface 8 for the realization of the prelocking position and a second locking surface 9 for the realization of the main closed position. Depending on the respective closed position of the holding part 4, the blocking surface 7 of the blocking part 6 comes into engagement with the first blocking surface 8 or the second blocking surface 9 of the holding part 4.

The arrangement is now such that in the locked state, the locking member 6 has a Schließtendenz at befindlichem in the Vorschließstellung holding part 4 and in befindlichem in the main closing position holding part 4 has an opening tendency. The term "closing tendency" here means that the locking member 6 is pushed in the locked state by the still to be explained holding force F further into engagement with the locking surface 8 of the holding part 4. This corresponds to a load of the locking member 6 in the direction of incidence, in Fig. 2 counterclockwise. The term "opening tendency" means in the present case that in the locked state, the holding force F the locking member 6 is disengaged from the holding part 4. This corresponds to a load of the locking part 6 in the lifting direction, in Fig. 2 clockwise.

To open the motor vehicle lock 2, the blocking part 6 is lifted into a release position (FIG. Fig. 1 ), in which the locking surfaces 7; 8, 9 are disengaged from each other and the holding part 4 release. To release the located in the prelocking holding part 4, the locking member 6 via an in Fig. 2a only schematically indicated opening mechanism 10 pivoted clockwise. To release the lock latch 3 from the main closed position, a second locking member 11 via a further opening mechanism 12, the in Fig. 2b is also only indicated, moved out of the range of movement of the locking member 6 out. For the basic operation of the barrier shown in the drawing may on the German utility model DE 20 2013 004 589 U1 referred to by the Applicant, the content of which is hereby incorporated by reference.

It is essential that in the blocking state to limit an axial offset relative to the holding part axis 4a between the blocking surface 7 of the blocking part and the respective blocking surface 8, 9 of the holding part 4, a support surface 13 of the locking part 6 and a support surface 14, 15 of the holding part 4 together axially abstützendem engagement or can be brought in axially abstützendem engagement. It is here and preferably such that the holding part 4 for the Vorschließstellung a first support surface 14 and for the main closing position, a second support surface 15 is assigned.

In the Fig. 3 left detaildstellung shows the proposed blocking mechanism 1 in the normal state in the locked state in befindlichem in the main closing position holding part 4. A crash-related, based on the holding part axis 4a axial displacement of the locking surface 9 of the holding part 4 in Fig. 3 to the left causes the support surface 15 of the holding part 4 with the support surface 13 of the locking member 6 is engaged. Upon further deformation, the holding part 4 takes over the support surfaces 13, 15 with the locking member 6, without affecting the locking engagement between the holding part 4 and locking part 6. This is in the in Fig. 3 shown right detail.

The in Fig. 3 left detail can be seen that in normal operation, the support surface 15 of the holding part 4 and the support surface 13 of the locking member 6 form a gap 16, that are disengaged from each other. This ensures that the proposed solution does not impair the function of the blocking mechanism 1 by additional friction or the like.

The Fig. 2 and 3 show further that in the locked state of the supporting engagement always takes place in the vicinity of the locking engagement. This means that it is supported exactly where the relative to the holding part axis 4a axial displacement is to be limited. As a result, leverage and deformation between the support surfaces 13; 14, 15 on the one hand and the blocking surfaces 7; 8, 9 on the other hand are not taken into account in the interpretation.

In the illustrated and insofar preferred embodiment, the support surface 13 of the locking member 6 is an integral part of the locking member 6. Alternatively, it may be provided that the support surface 13 of the locking member 6 attached to the locking member 6 otherwise or in the plastic injection molding of the locking member 6 incidentally is injected. The same applies to the respective support surface 14, 15 of the holding part. 4

Fig. 3 shows that the support surface 13 of the locking part 6 and the respective support surface 14, 15 of the holding part 4 each extend substantially perpendicular to the holding part axis 4a. Alternatively, it can also be provided that only the support surface 13 of the locking part 6 or only the respective support surface 14, 15 of the holding part 4 is substantially perpendicular to the holding part axis 4a.

The blocking surfaces 7; 8, 9 run here and preferably substantially along the holding part axis 4a. It may in turn be provided that only one of the blocking surfaces 7; 8, 9 runs along the holding part axis 4a.

Fig. 3 shows that the support surface 13 of the locking member 6 and the support surfaces 14, 15 of the support member 4 not only oriented differently, but here and preferably relative to the Halteteilachse 4a axially offset from the locking surface 7 of the locking member 6 and / or the respective blocking surface 8, 9th of the holding part 4 are arranged.

As mentioned above, the holding part 4 here and preferably on a lock latch 3, while the locking member 6 here and preferably a pawl 5 has. In the illustrated and so far preferred embodiment, it is even so that the holding part 4 is a latch 3 of a motor vehicle lock 2, which in the closed position in the closed position in holding engagement with a striker 17 o. The like., When the lock part 6 a Pawl 5 of a motor vehicle lock 2 is.

In the locked state in the prelocking located latch 3 ( Fig. 2a ) and in the case of the main latch position 3 ( Fig. 2b ) is the latch 3 in holding engagement with the striker 17. The striker 17 then exerts the above-mentioned holding force F on the latch 3 from. The pawl 5 counteracts the holding force F via the above-mentioned, locking engagement with respect to a pivoting movement of the lock latch 3. While the motor vehicle lock 2 is preferably arranged on the associated closure element, the striker 17 or the like is preferably found on the body of the motor vehicle.

The lock latch 3 is designed in the illustrated and so far preferred embodiment substantially disc-shaped, wherein the respective locking surface 8, 9 of the latch 3 is disposed on the outer periphery 18 of the latch 3. The respective support surface 14, 15 of the latch 3, however, is arranged on a flat side 19 of the latch 3. The supporting force between the latch 3 and the pawl 5 is preferably aligned substantially transversely to the flat side 19 of the latch 3.

The latch 3 has an inlet mouth 20 into which the striker 17 or the like enters during the closing of the associated closure element. In this case, the latch 3 pivots, driven by the striker 17 o. The like., In one of its closed positions, in Fig. 1 counterclockwise.

A synopsis of Fig. 2 and 3 shows that both the supporting engagement on the support surfaces 13; 14, 15 and the locking engagement on the locking surfaces 7; 8, 9 are provided in the region of the outer periphery 18 of the lock latch 3. This is essentially due to the consideration that the locking of the lock latch 3 on the outer circumference 18 with relatively low locking force is possible and that the proposed supporting as mentioned above should preferably take place in the vicinity of the locking engagement.

For the supporting engagement between the latch 3 and pawl 5 numerous design variants are conceivable. Here and preferably, the support surface 13 of the pawl 5 is part of a support tab 21, which protrudes from the pawl 5 in the rest. In this case, the pawl 5 is preferably designed as a stamped and bent part, wherein the support tab 21 is bent from the pawl 5 in the rest. Alternatively, it can also be provided that the support surface 13 providing the support portion 13a is attached to the pawl 5 otherwise. Furthermore, it is conceivable that the support portion 13a is molded in the plastic injection molding on the pawl 5 otherwise.

As mentioned above, the support portion 13a according to the invention not only the proposed support function to. Rather, the support portion 13a of the pawl 5, here and preferably the support tab 21, provides an entrance depth limit. It is assumed that the pawl 5 in a direction of incidence, in Fig. 2 counterclockwise, can engage in engagement with the pawl 5 and that the pawl 5 counter to the direction of incidence, in Fig. 2 clockwise, can be lifted. Since the pawl 5 is preferably spring-biased in the direction of incidence, an incidence depth limit proves to be advantageous in principle. In a particularly preferred embodiment, the latch bolt 3 is provided with a limiting contour 22, with which the support portion 13a comes into engagement at a predetermined depth of incidence of the pawl 5. Here and preferably, the limiting contour 22 is arranged on the latch 3, preferably on the above flat side 19 of the latch 3.

An above Ein Eindtiefebegrenzung is provided in the illustrated and so far preferred embodiment only for the main closed position of the lock latch 3. By the local, ramp-shaped blocking surface 9, the pawl 5 would slide in the adjustment of the latch 3 from the main closed position in an overstroke position without Einim depth limit to the blocking surface 9. The subsequent, caused by high Türdichtungsgegendrücke provision of the lock latch 3 in the main closed position would over the ramp-shaped locking surface 9 to an unwanted acceleration of the pawl 6 in the lifting direction. The above-mentioned depth of impact limitation prevents such movement of the pawl 5 in the overstroke.

According to another teaching, which has independent significance, a motor vehicle component with a proposed barrier is claimed as such. Reference may be made to all versions of the proposed barrier.

In a particularly preferred embodiment, the motor vehicle component is a motor vehicle lock which, as explained above, has a latch 3 and a pawl 5. In a particularly preferred embodiment, the motor vehicle lock 2, as in Fig. 3 shown, equipped with a strike plate 23 for receiving bearing pins 24, 25 for the latch 3 and the pawl 5, wherein in the locked state, the latch 3 between the support surface 13 of the pawl 5 and the strike plate 23 is included. This can best be done according to the illustration Fig. 3 remove. From this representation it follows that the above inclusion of the lock catch 3 offers a high level of robustness in both possible axial displacement directions of the respective blocking surface 8, 9 of the lock catch 3.

The proposed solution generally offers a high crash safety for a motor vehicle lock 2, in which a high, in particular crash-related, on the striker 17 o. The like. Acting holding force F leads to a deformation of the motor vehicle lock 2 in the assembled state, which essentially relates to a Axial displacement of the respective locking surface 8, 9 of the latch 3 is associated with the holding part axis 4a. Essential here is the fact that the blocking surface 7 of the pawl 5 by the supporting engagement between the support surfaces 13; 14, 15 of this axial displacement of the respective locking surface 8, 9 of the latch 3 essentially follows. This is in the right detail view according to Fig. 3 refer to. There, the locking surface 9 is shifted to pointing part of the latch 3 to the left, which leads to the proposed, supporting engagement between the latch 3 and pawl 5 that the pawl 5 is also moved to the left. The necessary for the locking engagement overlap between the locking surfaces 7; 8, 9 is ensured despite a structural deformation of the motor vehicle lock 2.

Claims (14)

1. Detent mechanism for a motor vehicle component, in particular a motor vehicle lock (2), comprising a pivotable holding part (4) and a pivotable blocking part (6), the holding part (4) being pivotable into a closing position, in particular a pre-closing position and a main closing position, and into an open position about a holding part axis (4a), a blocking state being produced by the blocking part (6) being pivotable into a blocking position in which a blocking surface (7) of the blocking part (6) and a blocking surface (8, 9) of the holding part (4) are in blocking engagement with each other and block a pivoting movement of the holding part (4) out of the closing position in the direction of the open position, the blocking part (6) being pivotable into a release position in which the blocking surfaces (7, 8, 9) are disengaged from each other and release the holding part (4), characterized in that, in the blocking state, in order to limit an axial offset, with respect to the holding part axis (4a), between the blocking surfaces (7; 8, 9), a supporting surface (13) of the blocking part (6) and a supporting surface (14, 15) of the holding part (4) are in axially supporting engagement with each other or can be brought into axially supporting engagement with each other, the holding part (4) is a lock latch (3) of a motor vehicle lock (2), which lock latch, when a fitted motor vehicle lock (2) is in the closing position, is in holding engagement with a striker (17) or the like, and the blocking part (6) is a pawl (5) of the motor vehicle lock (2) characterized in that that supporting portion (13a, 21) of the pawl (5) which provides the supporting surface (13) provides an engagement depth limit for the pawl (5) the supporting portion (13a) comes into engagement with a limit contour (22) at a predetermined engagement depth of the pawl (5),
2. Detent mechanism according to Claim 1, characterized in that, during normal operation, the supporting surface (14, 15) of the holding part (4) and the supporting surface (13) of the blocking part (6) form a gap (16).
3. Detent mechanism according to Claim 1 or 2, characterized in that, in the blocking state, the supporting engagement is provided in the vicinity of the blocking engagement.
4. Detent mechanism according to one of the preceding claims, characterized in that the supporting surface (13) of the blocking part (6) is an integral component of the blocking part (6), and/or in that the supporting surface (14, 15) of the holding part (4) is an integral component of the holding part (4).
5. Detent mechanism according to one of the preceding claims, characterized in that the supporting surface (13) of the blocking part (6) and/or the supporting surface (14, 15) of the holding part (4) run or runs substantially perpendicularly to the holding part axis (4a).
6. Detent mechanism according to one of the preceding claims, characterized in that the blocking surface (7) of the blocking part (6) and/or the blocking surface (8, 9) of the holding part (4) substantially run or runs along the holding part axis (4a).
7. Detent mechanism according to one of the preceding claims, characterized in that the supporting surface (13) of the blocking part (6) and the supporting surface (14, 15) of the holding part (4) are arranged with respect to the blocking surface (7) of the blocking part (6) and/or the blocking surface (8, 9) of the holding part (4) in a manner offset axially with respect to the holding part axis (4a).
8. Detent mechanism according to one of the preceding claims, characterized in that the lock latch (3) is of substantially disk-shaped design, in that the blocking surface (8, 9) of the lock latch (3) is arranged on the outer circumference (18) of the lock latch (3), and in that the supporting surface (14, 15) of the lock latch (3) is arranged on a flat side (19) of the lock latch (3).
9. Detent mechanism according to one of the preceding claims, characterized in that both the supporting engagement and the blocking engagement are provided in the region of the outer circumference (18) of the lock latch (3).
10. Detent mechanism according to one of the preceding claims, characterized in that the supporting surface (13) of the pawl (5) is a component of a supporting tab (21) which furthermore protrudes from the pawl (5), preferably in that the pawl (5) is designed as a punched and bent part, and in that the supporting tab (21) is furthermore bent away from the pawl (5).
11. Detent mechanism according to one of the preceding claims, characterized in that the supporting portion (13a). comes into engagement with a limit contour (22) at a predetermined engagement depth of the pawl (5), preferably in that the limit contour (22) is arranged on the lock latch (3).
12. Motor vehicle component, in particular motor vehicle lock, comprising a detent mechanism (1) according to one of the preceding claims.
13. Motor vehicle component according to Claim 12, characterized in that the holding part (4) is a lock latch (3) of a motor vehicle lock (2), which lock latch, when a fitted motor vehicle lock (2) is in the closing position, is in holding engagement with a striker (17) or the like, and the blocking part (6) is a pawl (5) of a motor vehicle lock (2), preferably in that a striking plate, in particular (23), is provided for receiving bearing pins (24, 25) for the lock latch (3) and the pawl (5), and in that, in the blocking state, the lock latch (3) is enclosed between the supporting surface (13) of the pawl (5) and the striking plate (23).
14. Motor vehicle lock according to Claim 12 or 13, characterized in that, in the fitted state, a high, in particular crash-induced, holding force acting on the striker (17) or the like leads to deformation of the motor vehicle lock (2), the deformation being substantially associated with an axial shifting of the blocking surface (8, 9) of the lock latch (3), and in that the blocking surface (7) of the pawl (5) substantially follows said axial shifting by means of the supporting engagement between the supporting surfaces (13; 14, 15).

Images