EP2358958A1

EP2358958A1 - Multi-latch lock with catch hook

Info

Publication number: EP2358958A1
Application number: EP09805906A
Authority: EP
Inventors: Holger Schiffer; Ludger Graute; Ömer INAN; Thomas SCHÖNENBERG
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2008-12-10
Filing date: 2009-12-03
Publication date: 2011-08-24
Anticipated expiration: 2029-12-03
Also published as: WO2010066240A1; DE102008061524A1; EP2358958B1

Abstract

The invention relates to a device (1) for a motor vehicle lock (2) comprising at least one rotary latch (6), a locking latch (9), and a blocking lever (14), wherein the blocking lever (14) locks the locking latch (9) in a main locking latch engagement position (22) in the opening direction (25) of the locking latch (9), and the locking latch (9) is also rotated away from the rotary latch (6) by an angle a (23) relative to the main locking latch engagement position (22) during an opening motion (27) of the rotary latch (6), a closing motion (26) of the rotary latch, a pre-engagement position (40) of the rotary latch (6), and an open position (21) of the rotary latch (6), wherein the angle a (23) is always greater than 0°.

Description

Multi-way ratchet with locking hook

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, as described for example in DE 10 2007 003 948 Al, 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 introduces a Schwerikmoment 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 Sperrklinken- rotational 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 via the second pawl, which pivots the blocking lever during the opening process as a rule, so that the rotary latch automatically pushes the first pawl off as soon as the blockage is released. 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 operating 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 claims can be combined with one another 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.

The device according to the invention for a motor vehicle lock comprises at least one rotary latch, wherein the rotary latch comprises a rotary latch axle, a lock holder, a main latch and a preliminary latch and is rotatably mounted on the rotary latch axle, a pawl with a pawl axis, a pawl main latching position, a latching leg and a latching hook with a latching hook blocking surface, and a blocking lever having a blocking lever axis, a triggering leg and a blocking leg with a blocking lever contact surface, wherein the blocking lever the pawl on the blocking leg in a pawl main latching position by contacting the blocking lever contact surface with the latching hook blocking surface in the opening direction of the pawl blocked, wherein the pawl 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 latching position is rotated 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 generally 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 the provision of a device operating with particularly low noise, the pawl is designed or arranged such that the force exerted by the rotary latch causes a torque at the pawl, which promotes the release of the rotary latch. In that regard, causes (only) the catch an opening moment with respect to the first pawl, so that it can be easily moved in the geöfmete 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 GeSSes (for example by squeezing the door seals, driving and the like) no opening of the device or no release of the contact cause of pawl and catch. 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. By an opening movement, the person skilled in the art understands all (opposite) rotational movements of the rotary latch that are opposite to the closing movement.

During the closing movement and the opening movement of the rotary latch, the rotary latch cooperates with a pawl, which is an opening movement of the rotary latch from the pre-locking position, wherein the pawl contacts the pre-catch of the rotary latch, and from the closed position, wherein the pawl is the main catch of the rotary latch contacted, prevented. The pawl is rotatably mounted on a pawl axis and has z. B. an L-shaped locking legs with a Sperrklinkenaufhahme on, with the main branch of the catch and with the Pre-engagement of the catch can interact. The pawl space 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-catch of the catch. 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 is blocked in the closing direction, ie towards the catch, by the catch and blocked in the Öffhungsrichtung, ie away from the catch, by a blocking lever having a blocking leg contact surface with a blocking lever, which on the latch hook blocking surface of the Latching hook of the 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 out of the pawl-main latching position by the catch in the Öffhungsrichtung by an angle a. This pivoting of the pawl in the direction of opening ensures that the latching hook can be guided laterally along the blocking leg.

Due to the bias of the pawl in the direction of the rotary latch slides the pawl (preferably partially) during the Öffhungsbewegung 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 during the Öffhungsbewegung the rotary latch and during the closing movement of the rotary latch is always greater than 0 °. 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 Öffhungsbewegung 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 Öffhungsrichtung 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 a 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 one embodiment 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 Öffiiungsbewegung the catch 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 in the Öffhungsbewegung after leaving its closed position is not blocked by the pawl in the Vorraststeilung and can be freely pivoted into the open position. This effectively prevents so-called "pre-doctoring".

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 space of the locking leg of the pawl is greater than a second depth of incidence of the catch of the catch in the Vorraststeilung the catch in the pawl receptacle of the locking leg. Here, the first incidence depth is understood to be a radial length relative to the rotary latch axis, which corresponds to the distance which dips the main catch of the rotary latch into the pawl space 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 Sperrklinkenaufhahme the locking leg. This advantageous embodiment of the invention is achieved in an advantageous manner that the angle of rotation a, 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 their Öffhungsbewegung.

According to one embodiment, it is also proposed that the device has a release lever with a contact element for the blocking lever. Actuation of the locking lever via a release lever ensures that tion of 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 relative to the lock-holder space are provided on opposite segments separately spaced from each other. The design of the rotary latch with two segments forming the lock holder ensures a particularly quiet 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 of 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 rotary latch, wherein the guide surface is disposed adjacent to the pawl Aufklinkenaufhahme 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 with an angle a greater than 0 ° in Öffhungsrichtung 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.

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:

1: a motor vehicle lock in the closed position,

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

Fig. 3: the motor vehicle lock with dissolved from the pawl receptacle

Sperrklmke,

4: the motor vehicle lock in the open position,

5: the motor vehicle lock in the pre-locked position,

6 shows the motor vehicle lock before the closed position,

Fig. 7: a motor vehicle lock with a release lever.

Fig. 1 shows an inventive device 1 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 located in the lock holder receptacle 24 of the rotary latch 6. The rotary latch 6 is rotatable the rotary latch axis 11 so that the rotary latch 6 can perform 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 limit the area of the lock holder receptacle 24 of the rotary latch 6 into which the lock holder 5 can enter or exit the catch 3 through the receptacle 4 of the lock plate 3.

The catch 6 in this case is in the area of the main catch 7 with the pawl 9 located in the pawl main detent position 22 (reference angular position) via the detent plate receptacle 20 of the detent leg 10. 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 prevented in the direction of the open position 21 (see FIG. 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 in such a way that the blocking lever 14 rotatably mounted on a blocking lever axis 15 initiates a torque in the closing direction 32 of the pawl 9 into the pawl 9 via its blocking leg 16 with the blocking rack contact surface 19 contacting the latching hook blocking surface 18 can. Furthermore, the blocking lever 14 has a trigger limb 17.

2 shows the motor vehicle lock 2 at the beginning of the Öfmungsbewegung 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 in Öffhungsrichtung 25 is freely pivoted. 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 rotary catch 6 in the opening movement 27, in which the lock holder 5 furthermore introduces a first force 33 into the rotary latch 6. The rotary latch 6 has pivoted the pawl 9 with respect to the pawl main detent position 22 by the angle (α) 23 in Öffhungsrichtung 25. 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. Furthermore, FIG. 3 shows 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 closed. 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. Here, too, it becomes 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 substantially overlaps the latching hook blocking surface 18 of the latching hook 13 in an orthogonal manner. 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 locking claw receptacle 20 of the locking leg 10 with a second engagement depth 36. The outer contour 35 of the segment 29 with the pre-catch 8 of the rotary latch 6 is now configured so that the pre-catch 8 can not completely submerge in the pawl receiving means 20 of the locking leg 10, so that the second incidence depth 36 is smaller than the first incidence depth 28 (FIG. see Fig. 1). This configuration of the segment 29 with the pre-catch 8 ensures that the pawl 9, which is spring-biased in the closing direction 32 in this embodiment, is pivoted in the direction of the opening 25 with respect to the pawl main detent position 22 at an angle (ά) 23. This pivoting of the pawl 9 by the angle (ce) 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 Öfmungsrichtung 25.

6 shows the motor vehicle lock 2 in the closing movement 26 shortly before the closed position 41 (see FIG. 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 about the Sperrklinkenaufhahme 20 adjacent 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 direction of the opening 25.

Fig. 7 shows an inventive device 1 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 triggering arnis 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 blocking latch 9 by a pivoting movement.

FIG. 8 shows in simplified form a motor vehicle 31 with doors which 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 detent position 22 in Öffhungsrichtung 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 division 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 device

2 Kraflfahrzeugschloss

3 lock plate

4 recording

5 lock holders

6 catch

7 main stop

8 pre-rest

9 pawl

10 locking legs

11 rotary latch axis

12 pawl axis

13 snap hooks

14 blocking lever

15 blocking lever axis

16 blocking legs

17 trigger legs

18 locking hook blocking surface

19 blocking lever contact surface

20 pawl receptacle

21 open position

22 pawl main latching position

23 angle a

24 lock holder receptacle

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 force

34 second force 35 outer contour

36 second incidence depth

37 release lever

38 release arm

39 contact element 40 Vorraststeilung

41 closed position

Claims

claims

1. Device (1) for a motor vehicle lock (2) at least comprising a rotary latch (6), wherein the rotary latch (6) comprises a rotary latch axis (11), a Schlosshalteraufhahme (24), a main catch (7) and a preliminary catch (8) and is rotatably mounted on the rotary latch axis (11), a pawl (9) with a pawl axis (12), a pawl main latching position (22), a locking leg (10) and a latching hook (13) with a latching hook blocking surface (18) , and a blocking lever (14) having a blocking lever axis (15), a trigger leg (17) and a blocking leg (16) with a blocking lever contact surface (19), wherein the blocking lever (14) over the locking pawl (9) the blocking leg (16) in a pawl

Main locking position (22) by contacting the blocking lever contact surface (19) with the latching hook blocking surface (18) in Öffhungsrichtung (25) of the pawl (9) locks, wherein the pawl (9) during a Öffhungsbewegung (27) of the rotary latch (6), a closing movement ( 26) of the catch (6), a Vorrast- position (40) of the rotary latch (6) and an open position (21) of the rotary latch (6) with respect to the pawl Hauptastaststellung (22) by an angle α (23) of the Rotary latch (6) is rotated away, wherein the angle α (23) is always greater than 0 °.

2. Device (1) according to claim 1, characterized in that the pawl (9) during the closing movement (26) of the rotary latch (6) in the closing direction (32) of the pawl (9) is spring-biased and during the Öffhungsbewegung (27) of the rotary latch (6) in the closing direction (32) of the pawl (9) is relieved.

3. Device (1) according to one of the preceding claims, characterized in that a first depth of incidence (28) of the main catch (7) of the rotary trap (6) in the closed position (41) of the rotary latch (6) in a pawl Aufhahme (20) of the locking leg (10) of the pawl (9) is greater than a second depth of incidence (36) of the pre-catch (8) of the rotary latch (6) in the Vorraststel- ment (40) of the rotary latch (6) in the Sperrklinkenaufhahme (20 ) of the locking leg (10).

4. Device (1) according to one of the preceding claims, characterized in that the device (1) has a release lever (37) with a contact element (39) for the blocking lever (14).

5. Device (1) according to one of the preceding claims, characterized in that the rotary latch (6) has two lock retaining space (24) forming segments (29), wherein in each case one segment (29) the pre-catch (8) and the main catch ( 7) forms.

6. Device (1) according to one of the preceding claims, characterized in that the locking leg (10) of the pawl (9) between the rotary latch (6) and the blocking lever (14) is arranged, and the locking leg (10) of Pawl (9) a guide surface (30) for the catch

(6), wherein the guide surface (30) adjacent to the Sperrklinkenaufhahme (20) of the locking leg (10) is arranged.

7. motor vehicle (31) comprising a motor vehicle lock (2) with a device (1) according to one of the preceding claims for securing a motor vehicle door.