EP2553193A1

EP2553193A1 - Motor vehicle lock

Info

Publication number: EP2553193A1
Application number: EP11713466A
Authority: EP
Inventors: Thorsten Bendel; Serkan Gülkan; Karsten Barth; Ulrich Weichsel
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2010-03-31
Filing date: 2011-01-20
Publication date: 2013-02-06
Anticipated expiration: 2031-01-20
Also published as: CN102939429A; JP2013525628A; KR20130024908A; KR101819696B1; CA2795122A1; CN102939429B; DE102010003500A1; JP5911843B2; WO2011120482A1; EP2553193B1; US20130127182A1; CA2795122C

Abstract

The invention relates to a lock for a motor vehicle having a locking mechanism comprising a rotary latch, a main latching pawl and preferably a preliminary latching pawl for latching the rotary latch. The preliminary latching pawl can engage in a preliminary latching element of the rotary latch. The main latching pawl can engage in a main latching element of the rotary latch. Moreover, there is a blocking lever for blocking the main latching pawl. The blocking lever is spring-mounted in order to ensure smooth running.

Description

Motor vehicle sc hloss

The invention relates to a lock for a motor vehicle with a

Lock comprising a catch, a main catch pawl and preferably a pre-locking pawl for locking the catch. The pre-locking pawl can engage in a pre-catch of the rotary latch. The position then reached is called Vorraststeilung. The ratchet has a bifurcated inlet slot into which a locking bolt of a vehicle door or vehicle door enters when the vehicle door or vehicle door is closed. The locking bolt can then the catch from an open position into a

Turn closed position, If the catch has reached a closed position, the locking pin can not leave the inlet slot of the catch.

In order to avoid that a pawl is not moved unplanned out of its detent position, a blocking lever may be provided which blocks such movement when the catch is locked. Such a blocking lever is required in the known from the document DE 10 2007003948 AI lock for the main catch pawl, as the catch and the main catch pawl so

are constructed so that the catch in the main locking pawl to initiate an opening torque and therefore able to push out of the detent position out. This is the quiet opening of the castle. The not previously published German patent application DE 102010 003483 it can be seen that a lock of the aforementioned type should include a driver for the main catch pawl to

Ensure that the main catch is safely lifted out of its locked position. The document WO 2009/149684 AI it can be seen that with a blocking lever alternatively or. In addition, a lock can be better protected against burglary,

For reasons of stability, the locking mechanism and the blocking lever basically consist essentially of metal. At least in part, metal parts are covered with plastic to minimize opening and closing noise and frictional forces.

It is an object of the invention to minimize in a lock for a motor vehicle opening and closing noise and in particular with low manufacturing costs.

The object of the invention is achieved by a lock with the features of the first claim. Advantageous embodiments emerge from the subclaims.

To achieve the object, a lock for a motor vehicle comprises a locking mechanism mounted on a lock plate with a catch, a main catch pawl and in particular a pre-locking pawl for locking the catch. With a rotatably mounted blocking lever, the main locking pawl can be blocked in the main locking position of the locking mechanism. The blocking lever is resiliently mounted in an embodiment with which the object of the invention can be achieved. It has been shown that a particularly great smoothness can be ensured by the resilient mounting. The blocking lever is thus not only rotatable but also spring-mounted. A resilient mounting according to the present invention does not mean the case that a biased spring acts on the blocking lever so that the blocking lever can be rotated by the spring about its axis of rotation. Instead, the claimed resilient mounting refers to the storage by the axle, which comprises at least one resilient element, so that the blocking lever in addition to its rotational movement against a

Spring force can be moved.

Although there are often no problems in terms of smoothness of a rotatable component of a motor vehicle lock, so that no special measures are usually required to improve smoothness. A person skilled in the art is therefore generally not anxious to improve the smoothness of a blocking lever. Instead, a person skilled in the art will first seek and use measures to improve smoothness when he sees meaning in them. The present invention is based on the recognition that it can make sense to improve the smoothness of a blockage lever and to operate a separate, beyond the normal level overhead.

The inventors have found that it makes sense technologically to take special measures to improve the smoothness of the

Operate blockage lever when the blocking lever after its release from the Hauptrasf pawl jumps, because the catch introduces an opening torque into the main catch pawl and therefore exerts the main pawl in the main locking position a pressure on the blocking lever. The inventors have found that it is technologically meaningful to operate special measures to improve the smoothness of the blocking lever when the center of gravity of the blocking lever has been balanced out, in particular in the manner known from the document WO 2009/150225 A2. The claim castle therefore has, especially with advantage to a spring-mounted blocking lever when the lock is such that the catch in the main latching position initiates an opening torque in the main catch pawl and / or the

Blocking lever in the sense of the patent application WO 2009/150225 A2 is balanced, that includes two lever arms, which differs from the

Blockage lever pivot axis seen from essentially in

extend opposite directions. The blocking lever of the present invention is therefore in particular in the WO

2009/150225 A2 configured known manner, if not

expressly a deviation is indicated. We therefore include the disclosure content of the patent application WO 2009/150225 A2 in the present application. To store a pawl or a lever resiliently, firstly requires additional effort and is also not always advantageous. Therefore, in the case of the main catch pawl, on the contrary, even in the case of the main catch pawl, it is even preferable that a metallic portion of the main catch pawl directly adjoin the metal-made axis about which the main catch is Locking pawl can be turned. It is so advantageous a rigid, motion-free

Connection to the catch produced, what with a lock in the

closed state is advantageous. In the case of the pre-locking pawl, on the other hand, such a particularly rigid connection to the rotary latch does not matter, since with a properly closed lock the pre-locking pawl does not contribute to rusting of the locking mechanism. In the case of the pre-locking pawl, the inventors have not noticed a constellation in which a particular smoothness by resilient storage would have been a total advantage. The inventors have investigated the case that the mass of the pawl and lever arms of the

Pre-locking pawl is greater or longer than the mass and / or

It is therefore to be preferred that in the case of the pre-locking pawl, a plastic sleeve or sheathing separates the axis for the pre-locking pawl from a metallic portion of the pre-locking pawl without at the same time resiliently supporting, noise and frictional forces are minimized so further, without having to accept other significant disadvantages.

Advantageously, the blocking lever is not only resiliently mounted. There is also, in one embodiment, a sleeve or sheath made of plastic, which separates corresponding metallic areas of the blocking lever from its metal axis.

Noise and frictional forces are thus further minimized.

To store the blocking lever springy, there is in one

Embodiment one or more resilient elements with which the blocking lever is resiliently pressed against a stop, especially against a stop at one end of the axis about which the blocking lever can be rotated. The one or more resilient elements are made of plastic, for example, and are then

preferably with the aforementioned plastic sleeve, which the

Lock lever axis encloses, integrally connected to the

Minimize production costs. In one embodiment, this plastic element comprises areal areas which protrude perpendicularly from the sleeve. These flat areas, which are also integrally connected to the sleeve, separate the blocking lever from the lock plate in order to further minimize noise and frictional forces.

To solve the problem, a lock of the type mentioned includes a catch with a pre-rest, which is formed by a protruding bolt. In the Vorraststeilung an edge of the aforementioned Vorrast pawl abuts the bolt, whereby the catch is locked. The edge is formed for stability reasons by a metallic core, which is covered for the purpose of noise minimization of a plastic layer. The plastic layer extends to a mounted on the pre-ratchet pawl, made of metal existing bolts and coated the plastic layer then this metallic core, so can in two different areas sound-absorbing or low-friction in just one step

In addition, it is achieved that the

Plastic layer is positively connected and thus reliably connected to the pre-locking pawl. Such a next bolt can for

Example be useful to provide the lock with a Zuziehhilfe. A closing aid moves the rotary latch motorized into the

Main latch position when the catch has latched in the pre-latching position. There is then, for example, a bracket whose movement can be controlled by means of the aforementioned next bolt. This bracket is advantageous mainly for the purpose of pulling against the bolt of the rotary latch directed and detects this purpose of moving the catch in the main latching position, which also forms the Vorrast.

As a plastic polypropylene can be used. Is not it just about noise reduction, but it should go beyond that

Frictional forces are minimized, so appropriately designed plastics such as polytetrafluoroethylene are to be preferred.

The invention will be explained in more detail with reference to an embodiment. There are further refinements and benefits clarified.

Show it:

Figure 1: components of a locking mechanism seen from above in the direction of not shown lock plate;

Figure 2: Components of the locking mechanism of Figure 1 from the bottom;

Figure 3: fragmentary perspective view. FIG. 1 shows an arrangement of components of a locking mechanism. The relative arrangement of the components shown in FIG. 1 occurs in the main locking position of a lock. The locking mechanism comprises a substantially metal rotary catch 1 and a in

Substantially metal pre-locking pawl 2. The rotary latch 1 can be rotated about an axis 3. The pre-locking pawl 2 can be rotated about an axis 4. The plane within which the pre-locking pawl 2 can be rotated is in FIG. 1

above the plane within which the catch 1 can be rotated.

The rotary latch 1 has a projecting in the direction of rotation of the Vorrast- pawl bolt 5, which forms the Vorrast and can also be part of a Zuziehhilfe and in particular in the manner known from the German patent application 102009026921.5 way to drive the rotary latch driven by the Vorraststeilung to move to the main position. In the pre-locking position of the locking mechanism, the bolt 5 bears against the lateral edge 6 of the pre-locking pawl 2, thereby preventing the rotary latch 1 from being turned into an open position. The attached to the catch 1 bolt 5 is also made of metal for stability reasons. In order to minimize the production costs, the bolt 5 has no plastic sheath. Instead, the edge 6 is formed by a metallic core, which is coated with a sound-absorbing plastic layer. The

Plastic layer extends to a mounted on the pre-locking pawl 2 bolt, which is also enveloped by the plastic layer. The bolt consists of a metallic core 7, which is encased by plastic 8. In this way, it is possible to coat metallic areas with plastic in a single step in order to produce several

to achieve advantageous effects. In addition, this ensures that the plastic coating is firmly connected to the metallic area. The attached to the pre-locking pawl 2 upwardly out of the paper plane protruding bolt 7, 8 serves the Provision of a closing aid in the German

Patent application 102009026921.5 described manner. The features of this closing aid can be part of the present lock, individually or in combination, as long as no deviations are specified. By wrapping this pin with plastic 8, frictional forces are kept low, in particular during the

Zuziehens occur by means of Zuziehhilfe. In addition, will

Minimizes grinding noises that can be generated by the closing aid.

As already known from the German patent application 102009026921, 5, the closing aid comprises a bracket arranged above the pre-locking pawl 2 with a slot into which the bolt 7, 8 attached to the pre-locking pawl extends. The

Plastic coating 9, the u. a. from the edge 6 to the

Metal core 7 is sufficient, minimizing frictional forces and grinding noises that occur when the aforementioned strap of the closing aid is moved, for example, to rotate the rotary latch 1 motorized from the pre-detent division to the main detent position. To provide this measure again no further step is required. The German patent application 102009026921.5 are more details to

Operation and advantages of a motor vehicle lock too

refer to the components of Figure 1 include. We refer the disclosure of this patent application in the

Disclosure of the present application with a. The

The present invention in particular comprises a closing aid together with embodiments described in the German patent application

102009026921.5 be disclosed. In order to minimize noise and frictional forces that occur by rotating the pre-locking pawl 2, this includes another

Plastic coating, which covers the inner wall of the bore sleeve-shaped, passes through the axis 4 therethrough. These

Coating opens both on the top and on the Bottom in three band-shaped plastic portions 10, 11, 12, which surround the pre-locking pawl, metal parts, which adjoin the pre-locking pawl 2 in the region of the axis 4 from above or below, then lie on the surfaces of the existing plastic tapes 10th , 11 and 12 on, so even so with minimized material and

Work effort turning noise and friction forces are minimized.

If the catch 1 from an open position in the direction

When the pre-locking position is reached, the pre-locking pawl 2 shown in FIG. 1 is rotated counterclockwise by a prestressed spring until the lever arm 13 has struck against the stop 14 as shown in FIG. The end of the lever arm 13 formed from metal is therefore coated with a plastic layer 15. This plastic layer 15 also covers a lateral edge 16 which is able to push against a pin-shaped driver 17. Once again it is achieved that with only one

Plastic layer 15 noise can be insulated, which come from different sources of noise. The driver 17 is attached to a covered with a plastic layer lever arm 18 of the main catch pawl. The Haupttrast- pawl is mainly hidden in the figure 1 by the pre-locking pawl 2 and is therefore visible only in places, If the lateral edge 16 of the pre-locking pawl 2 abuts against the driver 17, then the main locking pawl is out of its detent position As a rule, however, the main catch pawl will be its detent position from the known from the document DE 102007003948 AI reasons due to an introduction of an opening

Leave torque independently when the blocking lever 19, the main locking pawl no longer blocked due to a corresponding rotational movement.

Since particularly loud noises can be generated when the arm 13 impinges on the stop 14, it may be appropriate to the In addition, to coat stopper 14 with rubber, for example

To dampen noises especially strong.

The blocking lever 19 is pivoted by a biased spring in the case of Figure 1 about an axis clockwise when the main locking pawl pivots into the main catch. The axis has on the upper side a circular stop 20a, against which the blocking lever 19 is pressed by spring force. The diameter of the circular stop is relatively large so as to further improve smooth running. In particular, the diameter is more than 1.5 times the diameter of the shaft 20 (see FIG. 2) about which the blocking lever is rotated can.

The rotational movement of the blocking lever 19 is stopped as soon as the lever arm 21 impinges on the stop 22. In order to minimize noise associated with the impact, the stopper 22 consists of a metallic bolt which is coated with a rubber coating.

The components of a motor vehicle lock shown in FIG. 1 are described in the patent applications WO 2009/150225 A2 and DE

102009026920.7 described manner on a lock plate

appropriate. These two patent applications are more

Details of the operation and advantages of a

To take motor vehicle lock, comprising components of Figure 1. We refer the disclosure content of these two

Patent applications in the present application with a.

In comparison to FIG. 1, the components in FIG. 2 are shown from the other side. The pre-locking pawl 2 is therefore now partially covered by the main catch pawl 23. It is shown how the lever arm 24 of the main catch pawl 23, the rotary latch 1 is locked so that it can not be rotated in the direction of the open position (in the case of Figure 2 counterclockwise). Although the A rotary latch, for example, due to a biased spring, which acts on the rotary latch 1, an opening torque in the main-locking pawl. However, the lever arm 25 of the blocking lever 19 prevents in the main position shown that the

Main locking pawl 23 can be pushed out of its detent position.

The Hauptastast- pawl 23 is rotatably supported by the same axis 4, around which also the pre-locking pawl 2 can be rotated. A metallic portion of the main catch pawl 23 surrounds the metal axle 4 directly and in contrast to the storage of the pre-locking pawl, which is a plastic sleeve like

has described. So it does not find any, for example

Plastic existing sleeve or sheathing between the axis 4 and the adjacent metallic portion of the main catch pawl 23. It succeeds to produce a rigid motion-free connection to the catch 1 out, which is particularly advantageous for the desired closing an associated door or flap, in turn In another way, the blocking lever 19 is supported, and in contrast to the pre-locking and main-locking pawl elastic, the pawl is pressed by an elastic member along the axis 20 against a stop, the elastic element is formed by three plastic springs 26, 27 and 28 , which are attached to a plastic sleeve. The plastic sleeve separates the axis 20 from the metallic portion of the blocking lever 19. The springs 26, 27 and 28 are then between the not shown

Lock plate and the adjacent bottom of the blocking lever 19. Relative to the lock plate, the springs 26, 27 and 28 extend obliquely upwards in the direction of blocking lever and press the

Blockade lever resiliently against the stop 20 a shown in Figure 1 along the axis 20. The springs 26, 27 and 28 close with the

Lock plate in the unloaded state an angle of about 20 °. Of the sleeve which separates the axis 20 from the metallic portion of the blocking lever 19, there are three more

Plastic surface elements 29, 30, 31 perpendicular from, which is used to separate the existing metal blocking lever from the metal

existing lock plate contribute to minimize noise and friction losses, It has been found that just the illustrated elastic support of the blocking lever successfully contributes to noise through an improved smoothness

minimize.

The elastic mounting of the blocking lever is shown in FIG. 3

shown in perspective and partially enlarged. Figure 3 also shows a detail of the lever arm 24, which latches the catch and that the plastic sheathed tentacle 32 of the catch.

The two lever arms 21 and 33 of the blocking lever 19 extend as viewed from the axis 20 in substantially opposite directions. The center of gravity of the blocking lever is thus close to its axis of rotation 20,

The features of the exemplary embodiment are not necessarily to be combined with one another in order to achieve the respectively described advantageous effects. The subject matter of claim 1 may therefore comprise features of the exemplary embodiment individually or differently combined. LIST OF REFERENCE NUMBERS

1 catch

2 pre-locking pawl

3 axis

4 axis

5 bolts

6 edge of the pre-locking pawl

7 metallic core

8 plastic sheath

9 plastic coating

10, 11, 12 band-shaped plastic areas

13 lever arm

14 stop

15 plastic layer

16 edge

17 drivers

18 lever arm

19 blockage lever

20 axis

20a stop

21 lever arm

22 stop

23 main ratchet pawl

24 lever arm

25 lever arm

26, 27, 28 springs

29, 30, 31 plastic surface elements

32 catching arm

33 lever arm

Claims

claims

1. Lock for a motor vehicle with one on a lock plate

attached ratchet comprising a catch (1), a main catch pawl (23) and in particular a Vorrast- pawl (2) for locking the catch (1) and a

Blocking lever (19), which blocks the main-locking pawl (23) in the Hauptastaststellung the Gesperres, characterized

characterized in that the blocking lever (19) is preferably spring-mounted.

2. Lock according to claim 1, characterized in that this is such that in the main latching position, the rotary latch (1) in the main catch pawl (23) initiates an opening torque and / or the blocking lever (19) at least two lever arms (21 , 33) extending from the axis of rotation (20) of the

Blockage levers seen from essentially in

extend opposite directions.

3. Lock according to one of the preceding claims, characterized

in that the pre-locking pawl (2) and / or the main-locking pawl (23) are not resiliently mounted.

4. Lock according to one of the preceding claims, characterized

characterized in that a plastic sleeve or sheath separates the axis for the pre-locking pawl (2) from a metallic portion of the pre-locking pawl.

5. Lock according to one of the preceding claims, characterized

characterized in that a metallic portion of the main catch pawl (23) directly adjoins the metal shaft (4) about which the main catch pawl (23) is rotated can be.

6. Lock according to one of the preceding claims, characterized

in that a sleeve made of plastic separates a metallic region of the blocking lever (19) from its metal axle (20).

7. Lock according to one of the preceding claims, characterized

characterized in that resilient elements (26, 27, 28) the

Press the blocking lever (19) resiliently against a stop (20a) of the axle (20) about which the blocking lever (19) can be turned.

8. Lock according to the preceding claim, characterized

characterized in that the diameter of the stop (20a) is at least 1.5 times as large as the diameter of the axis (20) press, by which the blocking lever (19) can be rotated.

9. Lock according to one of the preceding claims, characterized

characterized in that the catch of the rotary latch is formed by a projecting pin (5) which abuts in the pre-detent division on an edge (6) of the pre-locking pawl (2), wherein the edge (6) is formed by a metallic core is covered by a plastic layer (9).

10. Lock according to the preceding claim, characterized

characterized in that the plastic layer (9) up to a mounted on the pre-locking pawl bolt whose

metallic core (7) is encased by the plastic layer (8), wherein the bolt (7,8) is part of a Zuziehhilfe.

11. Lock according to one of the preceding claims, characterized

characterized in that an end region of a lever arm (13) of the pre-locking pawl (2) is covered with a plastic layer (15), which is able to bump against a stop (14).

12. Lock according to one of the preceding claims with a provided with an elastic surface stop (14) for the pre-locking pawl (2).

13. Lock according to one of the preceding claims with a provided with an elastic surface stop (22) for the blocking lever.