EP2358958B1 - Multi-latch lock with catch hook - Google Patents

Description

The present invention relates to a device for a motor vehicle lock with at least one rotary latch, a pawl and a locking lever. Such motor vehicle locks are used in motor vehicles in particular for locking doors, flaps or the like.

Known lock units, such as those in the DE 10 2007 003 948 A1 have a rotary latch, a first pawl with a pawl rotation axis and a blocking lever, wherein the rotary latch in a locked state of the lock unit initiates a pivoting moment in the first pawl and the first pawl is fixed by means of the blocking lever. Furthermore, there is provided a second pawl which is mounted on the pawl rotation axis and engageable with a blocking lever and the catch. In this lock unit, the first pawl forms a so-called main catch pawl, while the second pawl is a so-called pre-catch pawl. The actuation of the lock unit is carried out regularly at the same time on the second pawl, which pivots the blocking lever during the opening process as a rule, so that the catch automatically pushes away the first pawl as soon as the blockade is resolved. Such lock units have already been mass produced in high quality.

Nevertheless, efforts are being made to further improve these proven lock units. In this regard, the development focus is placed particularly on a weight saving, a reduction in the number of components and / or an increase in the operating comfort by reducing the required operating forces.

The object of the invention is therefore to solve the problems described with reference to the prior art at least partially and in particular to provide a device for a motor vehicle lock, which has a low number of components, a comparatively low weight and very low actuation forces.

These objects are achieved with a device according to the features of claim 1. Further advantageous embodiments of the invention are specified in the dependent formulated claims. It should be noted that the features listed individually in the dependent formulated claims can be combined with each other in any technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

• eine Drehfalle, wobei die Drehfalle eine Drehfallenachse, eine Schlosshalteraufnahme, eine Hauptrast und eine Vorrast umfasst und auf der Drehfallenachse drehbar gelagert ist,
• eine Sperrklinke mit einer Sperrklinkenachse, einer Sperrklinken-Hauptraststellung, einen Rastschenkel und einen Rasthaken mit einer Rasthakenblockierfläche, und
• einen Blockierhebel, der eine Blockierhebelachse, einen Auslöseschenkel und einen Blockierschenkel mit einer Blockierhebelkontaktfläche aufweist, wobei der Blockierhebel die Sperrklinke über den Blockierschenkel in einer Sperrklinken-Hauptraststellung durch Kontaktierung der Blockierhebelkontaktfläche mit der Rasthakenblockierfläche in Öffnungsrichtung der Sperrklinke versperrt,

wobei die Sperrklinke während einer Öffnungsbewegung der Drehfalle, einer Schließbewegung der Drehfalle, einer Vorraststellung der Drehfalle und einer Offenstellung der Drehfalle in Bezug auf die Sperrklinken-Hauptraststellung um einen Winkel α von der Drehfalle weg gedreht ist, wobei der Winkel α stets grö-βer als 0° ist.The device according to the invention for a motor vehicle lock comprises at least

• a rotary latch, wherein the rotary latch comprises a rotary latch axis, a lock holder receptacle, a main catch and a preliminary catch and is rotatably mounted on the rotary latch axis,
• a pawl with a pawl axis, a pawl main detent position, a locking leg and a latching hook with a latching hook blocking surface, and
• a lock lever having a lock lever axis, a trigger leg and a lock leg with a lock lever contact surface, the lock lever locking the lock pawl over the lock leg in a pawl main latch position by contacting the lock lever contact surface with the latch hook block in the opening direction of the pawl,

wherein the pawl is rotated during an opening movement of the rotary latch, a closing movement of the rotary latch, a pre-locking position of the rotary latch and an open position of the rotary latch with respect to the pawl main detent position by an angle α from the rotary latch, the angle α always greater than 0 ° is.

Such a motor vehicle lock is used regularly to secure vehicle doors, such. B. vehicle doors or trunk lids. For this purpose, the motor vehicle lock is usually arranged in or on such a motor vehicle door, whereas the lock holder, with which the motor vehicle lock of the vehicle door cooperates, is commonly fastened to the vehicle body. Nevertheless, a reverse arrangement of the motor vehicle lock and the lock holder is conceivable and according to the invention.

In the present device, the relative position between the rotary latch and pawl is not regularly formed so that the force exerted by the catch force passes through the pawl rotation axis and thus an independent fixation of the catch is made possible by means of the pawl. Rather, here, in particular for providing a particularly quiet-working device, the pawl is formed or arranged so that the force exerted by the catch causes a torque at the pawl, which favors the release of the catch. In that regard, causes (only) the catch an opening moment with respect to the first pawl, so that it can be easily moved to the open position due to the spring bias of the catch. In order to equally ensure a locked state permanently, the blocking lever is provided, which fixes the pawl in the locking position, so that in particular positional shifts with respect to the locking mechanism (for example, by compressing the door seals, driving and the like) no opening of the device or no release of contact cause of pawl and rotary latch. This blocks the "self-opening mechanism" of the locking mechanism.

At the beginning of the closing movement z. B. a motor vehicle door, a lock holder attached to the body runs into a suitable receptacle of a lock plate and meets there in the lock holder recording on the catch. The catch is located at the beginning of the closing movement in an open position and at the end of the closing movement in a closed position. In the open position of the rotary latch, the motor vehicle lock is opened, d. H. The lock holder can run free into the catch or run out of the catch. During the open position, the rotary latch regularly performs no rotational movement about its rotary latch axis, but it is spring-biased z. B. stored against a stop. A closing movement of the rotary latch is understood as meaning all movement phases of the rotary latch in which the rotary latch rotates about the rotary latch axis in the direction of the closed position. In the course of the closing movement of the rotary latch, the rotary latch, starting from its open position, reaches the closed position after 30 to 180 °, preferably after 50 to 150 ° and particularly preferably between 70 and 110 °. In this closed position, the vehicle door is completely closed and secured in position. Under an opening movement, the expert understands all opposite to the closing movement (opposite) rotational movements of the rotary latch.

During the closing movement and the opening movement of the rotary latch, the rotary latch cooperates with a pawl which makes an opening movement of the rotary latch from the pre-locking position, in which the pawl contacts the pre-catch of the rotary latch, and from the closed position, wherein the pawl contacts the main catch of the rotary latch, prevented. The pawl is rotatably mounted on a pawl axis and has z. B. an L-shaped locking leg with a Sperrklinkenaufhahme on, with the main branch of the catch and the Pre-engagement of the catch can interact. The pawl receptacle is z. B. formed as a recess of the locking leg, wherein the recess in particular (viewed from the direction of the pawl axis) enters flat and on the opposite side of the recess forms a substantially vertical contact surface for the main catch of the catch and for the pre-rest of the rotary latch. The main catch is in particular the region of the rotary latch on which the pawl in the closed position of the rotary latch can initiate an opening movement of the rotary latch against the set torque in the rotary latch. Accordingly, under the pre-catch of the catch is that region understood in which the pawl in the pre-latching position of the catch can initiate the opening movement of the catch opposite torque in the catch. It is further preferred that the pawl (at least during the entire closing movement of the rotary latch) presses against the circumference of the rotary latch or bears against it in a spring-biased manner.

In the closed position of the rotary latch, the pawl is in the so-called pawl-main latching position. In this pawl main latching position, the pawl in the closing direction, ie towards the catch, blocked by the catch and blocked in the opening direction, ie away from the catch, by a blocking lever having a blocking leg with a blocking lever contact surface on the latching hook blocking surface of the latching hook Pawl acts. The pawl is thus in the pawl main detent position with respect to the pawl axis in a defined position. To open the locking mechanism, the blocking lever is now actuated so that the latching hook of the pawl is released and the blocking of the pawl in the opening direction is released. In the main locking position of the rotary latch, for example, forces caused by the door seals regularly act, which cause a torque in the direction of the open position of the rotary latch. These torques now cause the opening movement of the rotary latch, whereby the pawl is pivoted from the pawl-main detent position by the catch in the opening direction by an angle α . This pivoting of the pawl in the opening direction ensures that the latching hook can be guided laterally along the blocking limb.

Due to the bias of the pawl in the direction of the rotary latch slides the pawl (preferably partially) during the opening movement of the rotary latch and the closing movement of the rotary latch along the outer contour or the circumference of the rotary latch. In this case, in particular, the outer contour of the rotary latch and the outer contour of the locking leg should be designed such that it is ensured that the angle α is always greater than 0 ° during the opening movement of the rotary latch and during the closing movement of the rotary latch. This ensures that the latching hook always overlaps the blocking lever contact surface of the blocking leg in the direction of the blocking lever axis during the opening movement of the catch, during the closing movement of the catch, in the pre-locking position of the catch and in the open position of the catch and thus the blocking lever the pawl in the opening direction of the pawl not blocked. This means, in other words, that the pawl in the pawl main detent position has a position that is most inclined during operation to the rotary latch, while it is positioned in all other movement sections by the angle α further away from the rotary latch. This now leads in particular to the fact that the securing of the catch in the pre-locking position and in the closed position is ensured only by a single (can be triggered with a blocking lever) pawl, which reduces the number of components and the weight of the vehicle floor.

According to a development of the device for a motor vehicle lock is also proposed that the pawl is spring-biased during the closing movement of the rotary latch in the closing direction of the pawl and during the opening movement of the rotary latch is relieved in the closing direction of the pawl. The (temporary) relief (ie in particular the reduction or even cancellation of the spring preload to the rotary latch) has the consequence that the pawl (eg due to gravitational forces) lifts off the catch and therefore in particular in the region of the pre-catch contact of pawl and catch is prevented. This ensures in an advantageous manner that the catch is not blocked in the opening movement after leaving its closed position by the pawl in the pre-locked position and can be freely pivoted into the open position. Thus, the so-called "Vorrasthakeln" effectively prevented.

Next, a further development of the device is proposed, wherein a first depth of incidence of the main catch of the catch in the closed position of the catch in a pawl receptacle of the locking leg of the pawl is greater than a second depth of incidence of the catch of the catch in the Vorraststellung the catch in the pawl receptacle of the locking leg. In this case, the first incidence depth is understood to mean a radial length relative to the rotary latch axis, which corresponds to the distance that the main catch of the rotary latch dips into the pawl receptacle of the latching leg. Accordingly, by the second depth of incidence is meant a radial length to the rotary latch axis, which corresponds to the distance that dips the pre-catch of the rotary latch in the pawl receptacle of the locking leg. This advantageous embodiment of the invention is achieved in an advantageous manner that the angle of rotation α in particular in the pre-locking position of the pawl is greater than 0 ° and thus the pawl is not hindered by the blocking lever in its opening movement.

According to one embodiment, it is also proposed that the device has a release lever with a contact element for the blocking lever. The operation of the blocking lever via a release lever ensures actuation the locking mechanism with particularly low operating forces. In particular, the lifting of the pawl of the catch here is not realized directly on the release lever. This is particularly advantageous in terms of operating comfort. In addition, no forces act on the release lever here by the catch, whereby the release lever can be dimensioned accordingly. For weight reduction, the release lever can also be made of a non-metallic material, such as plastic.

According to a development of the device, the rotary latch has two segments forming the lock holder receptacle, one segment each comprising the preliminary catch and the main catch. As a result, the pre-restraint and the main rest with respect to the lock holder receptacle are provided on opposite segments separately spaced from each other. The formation of the rotary latch with two lock holder forming segments ensures a particularly low-noise guidance of the lock holder in the lock holder receptacle during the opening movement of the rotary latch and during the closing movement of the rotary latch.

According to a further advantageous embodiment, the locking leg of the pawl between the catch and the blocking lever is arranged, and the locking leg of the pawl has a guide surface for the catch, wherein the guide surface is disposed adjacent to the pawl receptacle of the locking leg. With this arrangement and embodiment of the pawl, a particularly compact design of the motor vehicle lock is achieved. In addition, the guide surface of the locking leg of the pawl is formed so that the pawl (at least temporarily alone) is always deflected by the catch at an angle α greater than 0 ° in the opening direction of the pawl.

Particularly advantageous is the use of such a device in connection with a motor vehicle, for example. For closing motor vehicle doors, flaps, etc.

Fig. 1:

ein Kraftfahrzeugschloss in Schließstellung,

Fig. 2:

das Kraftfahrzeugschloss zu Beginn der Öffnungsbewegung,

Fig. 3:

das Kraftfahrzeugschloss mit aus der Sperrklinkenaufnahme gelöster Sperrklinke,

Fig. 4:

das Kraftfahrzeugschloss in der Offenstellung,

Fig. 5:

das Kraftfahrzeugschloss in der Vorraststellung,

Fig. 6:

das Kraftfahrzeugschloss vor der Schließstellung,

Fig. 7:

ein Kraftfahrzeugschloss mit einem Auslösehebel.

The invention and the technical environment will be explained in more detail with reference to FIGS. The figures show particular embodiments, to which the invention is not limited. They show schematically:

Fig. 1:

a motor vehicle lock in the closed position,

Fig. 2:

the motor vehicle lock at the beginning of the opening movement,

3:

the motor vehicle lock with released from the pawl receptacle pawl,

4:

the motor vehicle lock in the open position,

Fig. 5:

the motor vehicle lock in the pre-locking position,

Fig. 6:

the motor vehicle lock in front of the closed position,

Fig. 7:

a motor vehicle lock with a release lever.

Fig. 1 shows a device 1 according to the invention for a motor vehicle lock 2 in the closed position 41, wherein a fixed on a lock plate 3 locking is shown, with a fixed to the motor vehicle lock holder 5, which penetrates into a receptacle 4 of the lock plate 3, can be secured. In this closed position 41 of the motor vehicle lock 2, the lock holder 5 is in the lock holder receptacle 24 of the rotary latch 6. The rotary latch 6 is rotatable the rotary latch axis 11 is supported, so that the rotary latch 6, an opening movement 27 (here clockwise) and back a closing movement 26 (here counterclockwise) between the closed position 41 and the open position 21 (see. Fig. 4 ). The rotary latch 6 further comprises two segments 29, wherein a first segment 29, the main catch 7 and a second segment 29, the pre-catch 8 forms. The segments 29 delimit the area of the lock holder receptacle 24 of the rotary latch 6, in which the lock holder 5 can enter or exit the catch 3 through the receptacle 4 of the lock plate 3.

The catch 6 is here in the region of the main catch 7 with the pawl 9 located in the pawl-main detent position 22 (reference angular position) via the pawl receptacle 20 of the locking leg 10 in engagement. The main catch 7 of the rotary latch 6 is immersed radially to the rotary latch axis 11 of the rotary latch 6 with a first incidence depth 28 in the pawl receptacle 20 of the locking leg 10. An opening movement 27 of the rotary latch 6 is therefore in the direction of the open position 21 (see. Fig. 4 ) prevents the catch 6. The pawl 9 also has a pawl axis 12 on which the pawl 9 is rotatably mounted in the opening direction 25 and in the closing direction 32. In addition, the pawl 9 on the side facing away from the catch 6 a latching hook 13 with a (tangentially projecting) latching hook blocking surface 18. The latching hook blocking surface 18 is arranged relative to the latching hook 13 such that the blocking lever 14 rotatably mounted on a blocking lever axis 15 can introduce a torque in the closing direction 32 of the pawl 9 into the pawl 9 via its blocking leg 16 with the blocking lever contact surface 19 contacting the latching hook blocking surface 18. Furthermore, the blocking lever 14 has a trigger limb 17.

Fig. 2 shows the motor vehicle lock 2 at the beginning of the opening movement 27 of the rotary latch 6. It is apparent that initially the latching hook 13 of the pawl. 9 was released after pivoting of the blocking lever 14. As a result, the pawl 9 is freely pivotable in the opening direction 25. The lock holder 5 now acts on the rotary catch 6 with a first force 33, which, for example, can result from the compressed door seals. The catch 6 is thereby displaced in an opening movement 27, wherein the beveled main catch 7 pivots the pawl 9 with respect to the pawl main detent position 22 by the angle ( α ) 23 in the opening direction 25 of the pawl 9 and thus the main catch 7 from the pawl receptacle 20th of the locking leg 10 emerges.

Fig. 3 now shows the catch 6 in the opening movement 27, in which the lock holder 5 continues to initiate a first force 33 in the rotary latch 6. The catch 6 has pivoted the pawl 9 in the opening direction 25 with respect to the pawl main detent position 22 by the angle ( α ) 23. As a result, the main catch 7 of the rotary latch 6 has completely emerged from the pawl receptacle 20 of the locking leg 10. Further shows Fig. 3 in that the blocking limb 16 of the blocking lever 14 overlaps the latching hook blocking surface 18 of the latching hook 13 substantially orthogonally. This ensures that the blocking lever 14 does not block the pawl 9 in the opening direction 25 of the pawl 9.

Fig. 4 shows the motor vehicle lock 2 in the open position 21. In this open position 21, the opening movement 27 of the rotary latch 6 is completely completed. It is shown that one of the segments 29 of the rotary latch 6 has pivoted the pawl 9 with respect to the pawl main detent position 22 by an angle ( α ) 23 in the opening direction 25. Again, it is clear that the blocking lever 14 does not block the pawl 9 in the opening direction 25, because the blocking leg 16 of the blocking lever 14, the latching hook blocking surface 18 of the latching hook 13 overlaps substantially orthogonal.

Fig. 5 shows the motor vehicle lock 2 in the pre-locking position 40. In this pre-locking position 40, the pre-catch 8 is immersed in the pawl receptacle 20 of the locking leg 10 with a second depth of incidence 36. The outer contour 35 of the segment 29 with the pre-catch 8 of the rotary latch 6 is now designed so that the pre-catch 8 can not completely immerse in the pawl receptacle 20 of the locking leg 10, so that the second depth of incidence 36 is smaller than the first incidence depth 28 (see. Fig. 1 ). By this embodiment of the segment 29 with the pre-catch 8 it is ensured that in this embodiment in the closing direction 32 spring-biased pawl 9 is pivoted in relation to the pawl main detent position 22 at an angle ( α ) 23 in the opening direction 25. This pivoting of the pawl 9 by the angle ( α ) 23 ensures even in this phase of operation of the motor vehicle lock 2 that the blocking lever 14 does not block the pawl 9 in the opening direction 25.

Fig. 6 shows the motor vehicle lock 2 in the closing movement 26 shortly before the closed position 41 (see. Fig. 1 ). The closing movement 26 is caused by the lock holder 5, which introduces a torque into the rotary latch 6 by a second force 34. In this case, the outer contour 35 of the segment 29 slides with the pre-catch 8 of the catch 6 from the pawl receptacles 20 of the locking leg 10 and the adjacent to the pawl receiving 20 guide surface 30 of the locking leg 10 of the pawl 9. The guide surface 30 is designed so that the rotary latch in the closing direction 32 spring-biased pawl 9 with respect to the pawl-Haupttraststellung 22 by an angle ( α ) 23 in the opening direction 25 deflects, which is greater than 0 °. As a result, it is ensured in this operating phase of the motor vehicle lock 2 that the blocking lever 14 does not block the pawl 9 in the opening direction 25.

Fig. 7 shows a device 1 according to the invention with a release lever 37. This release lever 37 is rotatably mounted on the pawl axis 12 and has a trigger arm 38 with a contact element 39. The trigger lever 37 can now be pivoted so that the contact element 39 of the trigger arm 38 acts on the trigger leg 17 of the blocking lever 14, so that the blocking lever 14 releases the latching hook 13 of the pawl 9 by a pivoting movement.

Fig. 8 shows a simplified motor vehicle 31 with doors that are designed with a device 1 according to the invention for a motor vehicle lock 2.

The invention accordingly relates to a device 1 for a motor vehicle lock 2 comprising at least a catch 6, a (single) pawl 9 and a blocking lever 14, wherein the blocking lever 14 locks the pawl 9 in a pawl-main position 22 in the opening direction 25 of the pawl 9, and in addition, the pawl 9 (pivoted by the rotary catch 6) during (a) an opening movement 27 of the rotary latch 6, (b) a closing movement 26 of the rotary latch 6, (c) a pre-locking position 40 of the rotary latch 6 and (d) an open position 21 of the rotary latch 6 is rotated by a positive angle (α) 23 with respect to the pawl main latching position 22 of the rotary latch 6 away.

LIST OF REFERENCE NUMBERS

1

contraption

2

Motor vehicle lock

3

lock plate

4

admission

5

Castle holder

6

catch

7

primary position

8th

first position

9

pawl

10

latching leg

11

Rotary latch axis

12

Pawl axis

13

latch hook

14

Blöckierhebel

15

Blocking lever axis

16

blocking leg

17

trip leg

18

Latch hook blocking surface

19

Lock lever contact surface

20

Latch receiver

21

open position

22

Ratchet primary position

23

Angle α

24

Castle Joint Receivers

25

opening direction

26

closing movement

27

opening movement

28

first incidence depth

29

segment

30

guide surface

31

motor vehicle

32

closing direction

33

first strength

34

second force

35

outer contour

36

second depth of incidence

37

sear

38

release arm

39

contact element

40

preliminary latch

41

closed position

Claims (7)

1. Device (1) for a motor vehicle latch (2) comprising at least a catch (6), whereby the catch (6) comprises a catch axis (11), a latch holder mounting (24), a main ratchet (7) and a pre-ratchet (8) and is pivotably accommodated on the catch axis (11), a pawl (9) with a pawl axis (12), a pawl main ratchet position (22), a ratchet leg (10) and a ratchet hook (13) with a ratchet hook blocking surface (18), and a blocking lever (14), which has a blocking lever axis (15), a triggering leg (17) and a blocking leg (16) with a blocking lever contact surface (19), whereby the blocking lever (14) locks the pawl (9) by means of the blocking leg (16) in a pawl main ratchet position (22) by contacting of the blocking lever contact surface (19) with the ratchet hook blocking surface (18) in the opening direction (25) of the pawl (9), whereby the pawl (9) is pivoted away during an opening movement (27) of the catch (6), a closure movement (26) of the catch (6), a pre-ratchet position (40) of the catch (6) and an open position (21) of the catch (6) in relation to the pawl main ratchet position (22) around an angle α (23) from the catch (6), whereby the angle α (23) is always greater than 0°.
2. Device (1) according to patent claim 1, characterized in that the pawl (9) is pre-tensioned by a spring during the closure movement (26) of the catch (6) in the closure direction (32) of the pawl (9) and is relieved in the closure direction (32) of the pawl (9) during the opening movement (27).
3. Device (1) according to one of the previous patent claims, characterized in that a first incursion depth (28) of the main ratchet (7) of the catch (6) in the closed position (41) of the catch (6) into a pawl mounting (20) of the ratchet leg (10) of the pawl (9) is larger than a second incursion depth (36) of the pre-ratchet (8) of the catch (6) in the pre-ratchet position (40) of the catch (6) into the pawl mounting (20) of the ratchet leg (10).
4. Device (1) according to one of the previous patent claims, characterized in that the device (1) has a triggering lever (37) with a contact element (39) for the blocking lever (14).
5. Device (1) according to one of the previous patent claims, characterized in that the catch (6) has two segments (29) which form the latch holder mounting (24), whereby one segment (29) in each instance forms the pre-ratchet (8) and the main ratchet (7).
6. Device (1) according to one of the previous patent claims, characterized in that the ratchet leg (10) of the pawl (9) is arranged between the catch (6) and the blocking lever (14), and the ratchet leg (10) of the pawl (9) has a guide surface (30) for the catch (6), whereby the guide surface (30) is arranged adjacent to the pawl mounting (20) of the ratchet leg (10).
7. Motor vehicle (31) having a motor vehicle latch (2) with a device (1) according to one of the previous patent claims to secure a motor vehicle door.

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