DE202013004589U1 - Motor vehicle lock - Google Patents

Abstract

Motor vehicle lock with a lock latch (1) and a pawl arrangement (2), the lock latch (1) being pivotable into a pre-closing position and into a main closing position, the lock latch (1) located in one of the two closed positions with a motor wedge having a locking wedge (3 ) or the like is in holding engagement, the pawl arrangement (2) having a pivotable primary pawl (2a) which can be pivoted into at least one closed position, whereby the lock latch (1) in the pre-closed position and the main closed position against pivoting into its opening - Swiveling direction (4) can be locked, and which can be pivoted into at least one open position, in which it releases the lock latch (1), the lock latch (1) being locked in the pre-closing position by means of the primary pawl (2a) and in one Main closed state by means of the primary pawl (2a) in the main closed position is locked, the lock latch (1) pushing in the closed pivoting direction (4) of the lock latch (1) in both closed states, characterized in that the primary pawl (2a) only in one of the two closed states, in particular in the main closed state, due to the engagement pushes with the lock latch (1) in the opening / pivoting direction of the primary pawl (2a).

Description

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

The motor vehicle lock in question finds application in all types of closure elements 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 known motor vehicle lock ( US 3,386,761 A. ), from which the invention proceeds, is equipped with a latch and a pawl arrangement, wherein the latch is pivotable in an open position, a Vorschließstellung and in a main closed position. The latch located in one of the two closed positions is in a holding engagement with a usually body-mounted closing wedge.

The latch is associated with a pawl arrangement which locks the latch in the pre-closed position in a pre-closed state of the motor vehicle lock and locks the latch in the main closed position in a main closed state. The pawl assembly has a pivotable primary pawl which is pivotable in two closed positions for engagement with the latch in the pre-closed state and in the main closed state and in an open position for the release of the latch.

The pivoting direction of pivotable components such as latch and primary pawl from an open position to a closed position is always referred to herein as "closing pivoting direction" and the pivoting direction from a closed position to an open position is always referred to herein as "opening-pivoting direction".

The engagement between the latch and the primary pawl is made in the known motor vehicle lock so that the primary pawl always urged in the closed state in its opening pivoting direction. A secondary pawl ensures that the primary pawl is locked in the closed states against pivoting in its opening direction.

The urging of the primary pawl, which is based on the engagement with the latch bolt, in its opening-pivoting direction is referred to below as the "opening tendency" of the primary pawl for short. A corresponding urging in closing pivoting direction is referred to below as "closing tendency" of the primary pawl.

The pawl assembly in the known motor vehicle lock, with a suitable design allows a considerable reduction in the associated with the opening of the motor vehicle lock actuating forces and operating noise. A disadvantage, however, is the fact that, especially in the course of the adjustment of the latch in the closing direction, an undesired obstruction of the adjustment of the primary pawl by the secondary pawl is recorded. Already in Vorschließzustand the secondary pawl does not allow movement of the primary pawl in its opening-pivoting direction. This inevitably means that the primary pawl must be in the main-closing state further in the closing-pivoting direction, as in the pre-closed state. The necessary constructive consequence is the equipment of the secondary pawl with two notches for the primary pawl, which leads to increased costs and increased space requirements.

The invention is based on the problem, the known motor vehicle lock in such a way and further develop that simplifies the structural design and the space requirements are reduced.

The above 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.

It is essential first of all to realize that the opening tendency of a primary pawl in the pre-closed state with regard to the achievement of the main state of closure is accompanied by considerable design restrictions. It is also essential to realize that the holding forces prevailing in the pre-closing state are regularly low, so that there also the operating forces and operating noises associated with the opening process are correspondingly low.

Based on the above two findings, the proposed teaching is based on the fundamental consideration that the primary pawl only in one of the two closed states by engaging with the latch bolt in the opening-pivoting direction of the primary pawl pushes, that is equipped with an opening tendency. The respective closed state is preferably the main closing state, since the reduction of actuating forces and operating noise is particularly important in the main closing state.

With the proposed solution, the design flexibility in the design of the motor vehicle lock is increased by the fact that required for the Vorschließzustand engagement between Lock latch and primary pawl can be freely designed without having to implement an opening tendency of the primary pawl.

It should be noted that the term "primary pawl" does not mean that necessarily a secondary pawl must be provided. In any case, it is conceivable that the locking of the primary pawl against pivoting in the opening-pivoting direction by a corresponding spring system o. The like. Is realized. In the particularly preferred embodiment according to claim 2, however, it is such that a pivotable secondary pawl is provided, with which the primary pawl is lockable against an adjustment in its opening pivoting direction.

In the further preferred embodiment according to claim 3, the primary pawl is provided in the main closed state with an opening tendency and in the pre-closed state with a Schließtendenz. With such a design, the secondary pawl is not required in the pre-closed for locking the primary pawl, since the primary pawl urges anyway in its closing pivoting direction. As a result, the obstruction of the reaching of the main closing state caused by the secondary pawl mentioned in the introductory part of the description can not occur. The locking of the lock latch in the main closed state can be designed largely independently of the lock of the latch in the pre-closed state.

The further preferred embodiment according to claim 9 takes into account the fact that in the two closing states proposed different locking mechanisms act. In particular, in the event that the primary pawl is equipped in the pre-closed with a Schließtendenz, it may be advantageous that the opening provided for the motor vehicle lock operating lever is engageable with the primary pawl for pivoting the primary pawl in its opening pivoting direction. For the opening of the motor vehicle lock from the Hauptschließzustand out the operating lever is correspondingly engageable with the secondary pawl into engagement.

Another interesting aspect of the proposed solution is the possibility of a particularly cost-effective query the respective lock state, if, as proposed in claim 12, a first sensor element for determining the position of the primary pawl or a second sensor element for determining the position of the secondary pawl are provided. Due to the fact that both the primary pawl and the secondary pawl can assume different positions in the main closed state and in the pre-closed state, all relevant states can be detected with simple means by the use of simple sensor switches.

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

1 a proposed motor vehicle lock in its essential for the explanation of the invention components in the open state,

2 the motor vehicle lock according to 1 in Vorschließzustand a) without actuation of the operating lever and b) during actuation of the actuating lever and

3 the motor vehicle lock according to 1 in the main closed state a) without operating the operating lever and b) during operation of the operating lever.

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

The illustrated motor vehicle lock can be applied to almost all closure elements of a motor vehicle. In that regard, reference may be made to the introductory part of the description.

The illustrated motor vehicle lock is as usual with a latch 1 and a pawl assembly 2 fitted. The lock latch 1 is in the in 1 illustrated open position, in the in 2a) shown prefix and in the in 3a) shown main lock position swiveling. It is preferably in its opening pivoting direction 4 spring biased. The latch located in one of the two closed positions 1 stands at mounted motor vehicle lock with a striker 3 o. The like. In holding engagement. Preferably, the motor vehicle lock on the relevant motor vehicle door o. The like. And the closing wedge 3 arranged on the vehicle body.

The pawl arrangement 2 has a swiveling primary pawl 2a on, in at least one closed position ( 2 . 3 ) is pivotable and preferably in its closing pivoting direction 5a spring-biased. Here and preferably, the primary pawl 2a depending on the position of the latch 1 can be brought into slightly different closed positions. Specifically, the primary pawl 2a at in the main closing position. latch 1 ( 3a) ) sunken deeper than in the prelocking located latch 1 ( 2a) ). This results from a synopsis of 3 with the 2 , In principle, it can also be provided that the primary pawl 2a can only be pivoted into a single closed position, regardless of the position of the latch 1 is.

By pivoting the primary pawl 2a in one of its closed positions is the latch 1 in the preliminary position ( 2a )) and the main closing position ( 3a) ) against pivoting in the opening pivot direction 4 the latch 1 Lockout. It must lock the lock latch 1 not necessarily on the engagement between the primary pawl 2a and the lock latch 1 go back yourself. The actual locking of the latch 1 can in principle elsewhere, for example by a secondary pawl 2 B take place, as will be explained.

The primary pawl 2a is also pivotable in at least one open position in which they are the latch 1 in terms of pivoting in its opening-pivoting direction 4 releases. An open position of the primary pawl 2a is in 1 shown.

In an open state, in 1 is shown, there is the pawl assembly 2 the latch 1 in its opening pivoting direction 4 free, so that in the result no holding engagement between the latch 1 and the closing wedge 3 o. The like exists. In a pre-closed state is the latch 1 , as in 2 shown by means of the primary pawl 2 locked in the pre-closing position. On the other hand, in a main lock state, the latch is 1 , as in 3 shown by means of the primary pawl 2a locked in the main closed position.

In both of the above-mentioned closed states, the latch is urging 1 in its opening pivoting direction 4 which is the clockwise pivoting direction in the drawing. This opening tendency of the latch 1 arises primarily by the holding engagement with the striker 3 , the corresponding torque in the opening-pivoting direction 4 the latch 1 exercises.

It is essential now that the primary pawl 2a only in one of the two closed states, here and preferably in the main closed state ( 3a) ), by the engagement with the lock latch 1 in the opening swing direction 4 the primary pawl 2a urges.

To hold the latch 1 to ensure in the main closed position, it is further preferably so that the motor vehicle lock with a pivotable secondary pawl 2 B equipped with the primary pawl 2a against an adjustment in its opening-pivoting direction 4 is lockable. The secondary pawl 2 B is here in its closing swing direction 16a spring biased. Locking the primary pawl 2a through the secondary pawl 2 B is in 3a) shown. The secondary pawl 2 B is this with a catch 6 equipped with a counter-catch 7 at the primary pawl 2a can be brought into engagement.

In the illustrated and so far preferred embodiment, the primary pawl 2a in the main closing state as already explained with an opening tendency and in the pre-closed state with a Schließendendenz equipped. In 3a) urges the primary pawl 2a , driven by the opening tendency of the latch 1 , clockwise, while the primary pawl 2a in 2a) , again driven by the opening tendency of the latch 1 , urges counterclockwise. In the pre-closed state, the engagement is between the primary pawl 2a and the pre-rest 10 the latch 1 so self-locking.

Basically, however, it is also conceivable that the primary pawl 2a by engaging with the latch 1 in the main closing state in its closing pivoting direction 5a urges and in Vorschließzustand according to their opening-pivot direction 5 urges.

The lock latch 1 is configured disc-like in the illustrated and so far preferred embodiment. It is about the pivot axis 8th swiveling and has an inlet mouth 9 for the closing wedge 3 o. Like. On.

The lock latch 1 is at its periphery also with a pre-catch 10 and a main raste 11 , each for engagement with the primary pawl 2a , fitted. The term "catch" is to be understood in the present case. This is generally an engagement section on the latch 1 for holding engagement with the primary pawl 2a , A locking in the strict sense is not necessarily associated with this intervention.

The pre-catch 10 and the main raste 11 form, as can be seen from the drawing, in each case an end stop for the adjustability of the primary pawl 2a in closing swing direction 5a ,

As in 2a) shown is the primary pawl 2a in the pre-closed state with the pre-catch 10 in blocking engagement. 3a) shows, however, that the primary pawl 2a in the main closed state with the main catch 11 is in locking engagement. Here and preferably, the primary pawl has 2a for engagement with the pre-catch 10 and the main raste 11 an engaging portion 12 on. Depending on the design can the engagement section 12 one of the pre-catch 10 associated subsection and separately one of the main raste 11 having associated subsection.

Interesting in the illustrated embodiment, the structural design of pre-catch 10 and main raste 11 the latch 1 , The pre-catch 10 here has an engagement surface 10a on, based on the pivot axis 8th the latch 1 extends substantially radially or even forms an undercut with respect to a radial orientation. This forms the engagement surface 10a a snap fit for the primary pawl 2a , Alternatively or additionally, it may be provided that the main catch 11 an engagement surface 1la has, which is employed opposite to a radial extent. This forms the engagement surface 11a a run-up slope for the primary pawl 2a , The term "run-on slope" is here to an adjustment of the lock latch 1 in closing swing direction 4a based.

In general, the engagement between the lock latch 1 and the primary pawl 2a so taken that the force lines of action 13 . 14 the resulting engagement forces between lock latch 1 and primary pawl 2a on opposite sides of the pivot axis 15 the primary pawl 2a pass. 2a) shows for the Vorschließzustand that the force line of action 13 right at the pivot axis 15 the primary pawl 2a passes. 3a) shows for the main closed state that the force line of action 14 left at the pivot axis 15 the primary pawl 2a passes.

Just like the primary pawl 2a is also the secondary pawl 2 B in at least one closed position ( 3a) ), in which they have the primary pawl 2a against an adjustment in its opening-pivoting direction 5 locks and in at least one open position ( 3b) ), in which they have the primary pawl 2a releases, swivels. In a closed state, here in the main closed state ( 3a) ), urges the secondary pawl 2 B by engaging with the opening in its pivoting direction 5 urgent primary pawl 2a in the closing pivot direction 16 , This comes the secondary pawl 2 B a closing tendency, allowing the engagement between the primary pawl 2a and the secondary pawl 2 B insofar is self-locking.

Particularly interesting in the illustrated embodiment is the opening of the motor vehicle lock, so the release of the latch 1 in its opening pivoting direction 4 , by means of an actuating lever 17 , First of all, it is noteworthy that despite the proposed different locking mechanisms for the lock latch 1 one and the same operating lever 17 , which may also be designed in several parts, is provided.

The operating lever 17 is engaged with the primary pawl 2 for pivoting the primary pawl 2 be brought into its opening pivoting direction. This is in the illustrated embodiment for the in 2 illustrated Vorschließzustand relevant. 2 B) shows that pivoting of the operating lever 17 around the pivot axis 18 of the operating lever 17 , in 2 clockwise, to engage an actuating contour 19 on the operating lever 17 with an actuating counter contour 20 at the primary pawl 2a leads. Because the primary pawl 2a in the pre-closed state largely free of the secondary pawl 2 B is movable, becomes the primary pawl 2a by engaging with the operating lever 17 directly dug. A synopsis of 2a) and 2 B) show the beginning of the operation of the operating lever 17 , The further actuation of the operating lever 17 then leads, as explained above, to a lifting of the primary pawl 2a about the engagement between the actuating contour 19 and the actuating counter contour 20 ,

The operating lever 17 but is also in engagement with the secondary pawl 2 B for pivoting the secondary pawl 2 B in its opening pivoting direction 16 brought. 3b) shows how a second actuating contour 21 on the operating lever 17 with a second actuating counter contour 22 at the secondary pawl 2 B engageable to the secondary pawl 2 B in its opening pivoting direction 16 to pan. This is how in 3 shown relevant for opening the motor vehicle lock in the main lock state.

It can be summarized that by an actuation of the operating lever 17 from the Hauptschließzustand out the secondary pawl 2 B and from the pre-closed state, the primary pawl 2a in the respective opening-pivot direction 5 . 16 is pivotable.

In the illustrated and so far preferred embodiment, the primary pawl takes 2a in Vorschließzustand a different position than in the main closed state. As explained above, the closed position of the primary pawl 2a in the main closing state continues in closing pivot direction 5a lie as the closed position in the pre-closed state. Then it is preferable that the peripheral portion 23 the latch 1 between the pre-catch 10 and the main raste 11 one related to the pivot axis 8th the latch 1 follows a circular section course.

The proposed arrangement of lock latch 1 and pawl assembly 2 With different locking mechanisms allows the sensory detection of the lock states relevant here, ie the open state, the Vorschließzustands and the main state of closure, in a particularly simple manner. In the illustrated and so far preferred embodiment, a first sensor element 24 , Here and preferably a first sensor switch 24 , for determining the position of the primary pawl 2a and a second sensor element 25 , here and preferably a second sensor switch 25 , to determine the position of the secondary pawl 2 B intended. In the drawing, the current statuses are "0" and "1" next to the respective sensor switch 24 . 25 shown. For the pre-closed state ( 2a) ) results in the sensor values "1" and "0" for the sensor switches 24 . 25 , for the main closed state ( 3a) ) results in the sensor values "1" and "1" for the sensor switches 24 . 25 and for the open state ( 1 ) results in the sensor values "0" and "0" for the sensor switches 24 . 25 ,

It may be noted that all sorts of sensor elements 24 . 25 applicable for the detection of the condition of the motor vehicle lock. Here and preferably, the sensor elements are 24 . 25 however, around simple sensor switches, in particular microswitches. Also conceivable is the use of Hall sensors, inductive sensors o. The like ..

Finally, it should be noted that the operation of the operating lever 17 basically can be done manually. Then the operating lever 17 preferably coupled via a Bowden cable with an outside door handle or with a door inside handle. Here and preferably, the actuating lever 17 However, motor provided by means of a drive motor M, via a cable drive S with the operating lever 17 is coupled. Here, the proposed solution, with only low actuation forces are required to be particularly advantageous.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 3386761 A [0003]

Claims (12)

Motor vehicle lock with a latch ( 1 ) and a pawl arrangement ( 2 ), whereby the latch ( 1 ) is pivotable in a Vorschließstellung and in a main closed position, wherein the latch located in one of the two closed positions ( 1 ) with mounted motor vehicle lock with a striker ( 3 ) o. The like. Is in holding engagement, wherein the pawl assembly ( 2 ) a pivotable primary pawl ( 2a ), which is pivotable in at least one closed position, whereby the latch ( 1 ) in the prelocking position and the main closing position against pivoting in its opening pivoting direction ( 4 ) is lockable, and which is pivotable in at least one open position in which the lock latch ( 1 ) releases, wherein the lock latch ( 1 ) in a Vorschließzustand by means of the primary pawl ( 2a ) is locked in the Vorschließstellung and in a main locking state by means of the primary pawl ( 2a ) is locked in the main closed position, wherein the lock latch ( 1 ) in both closed states in the opening-pivot direction ( 4 ) the latch ( 1 ) urges, characterized in that the primary pawl ( 2a ) only in one of the two closed states, in particular in the main closed state, by the engagement with the latch ( 1 ) in the opening-pivoting direction of the primary pawl ( 2a ) urges. Motor vehicle lock according to one of the preceding claims, characterized in that a pivotable secondary pawl ( 2 B ) is provided, with which the primary pawl ( 2a ) against an adjustment in its opening-pivoting direction ( 5 ) is lockable. Motor vehicle lock according to claim 1 or 2, characterized in that the primary pawl ( 2a ) by engaging with the latch ( 1 ) in the main closing state in its opening-pivoting direction ( 5 ) urges and in Vorschließzustand in its closing pivot direction ( 5a ), or that the primary pawl ( 2a ) by engaging with the latch ( 1 ) in the main closing state in its closing pivoting direction ( 5a ) and in the pre-closed state in its opening-pivoting direction ( 5 ) urges. Motor vehicle lock according to one of the preceding claims, characterized in that the lock latch ( 1 ) at its periphery a Vorraste ( 10 ) and a main rast ( 11 ) and that the primary pawl ( 2a ) in the pre-closed state and in the main closed state with the pre-catch ( 10 ) and the main rast ( 11 ) is in locking engagement, preferably that the primary pawl ( 2a ) for engagement with the pre-catch ( 10 ) and the main rast ( 11 ) an engaging portion ( 12 ) having. Motor vehicle lock according to one of the preceding claims, characterized in that the pre-catch ( 10 ) an engagement surface ( 10a ) having a snap fit for the primary pawl ( 2a ), and / or that the main rast ( 11 ) an engagement surface ( 11a ) having a run-on slope for the primary pawl ( 2a ). Motor vehicle lock according to claim 5, characterized in that the secondary pawl ( 2 B ) in at least one closed position, in which they the primary pawl ( 2a ) against an adjustment in its opening-pivoting direction ( 5 ) locks and in at least one open position in which they the primary pawl ( 2a ), is pivotable. Motor vehicle lock according to claim 5 or 6, characterized in that in a closed state, in particular in the pre-closed state, by the engagement with the in its opening-pivoting direction ( 5 ) urgent primary pawl ( 2a ) the secondary pawl ( 2 B ) in its closing pivot direction ( 16a ) urges. Motor vehicle lock according to one of the preceding claims, characterized in that an actuating lever ( 17 ) is provided, which from the pre-closed state and / or the Hauptschließzustand out for the release of the lock latch ( 1 ) in engagement with the pawl assembly ( 2 ) can be brought. Motor vehicle lock according to claim 8, characterized in that the actuating lever ( 17 ) in engagement with the primary pawl ( 2a ) for pivoting the primary pawl ( 2a ) in its opening-pivoting direction ( 5 ) and in engagement with the secondary pawl ( 2 B ) for pivoting the secondary pawl ( 2 B ) in its opening-pivoting direction ( 16 ) can be brought. Motor vehicle lock according to claim 8 or 9, characterized in that by an actuation of the actuating lever ( 17 ) from the main lock state the secondary pawl ( 2 B ) and from the Vorschließzustand out the primary pawl ( 2a ) in their respective opening-pivoting direction ( 16 . 5 ) is pivotable. Motor vehicle lock according to one of the preceding claims, characterized in that the primary pawl ( 2a ) assumes a different position in the pre-closed state than in the main closed state, and / or that the secondary pawl ( 2 B ) assumes a different position in the pre-closed state than in the main closed state. Motor vehicle lock according to one of the preceding claims, characterized in that a first sensor element ( 24 ), in particular a first sensor switch ( 24 ), to determine the position of the primary pawl ( 2a ) and a second sensor element ( 25 ), in particular a second sensor switch ( 25 ), to determine the position of the secondary pawl ( 2 B ) are provided.

Images