WO2018103790A1

WO2018103790A1 - Motor-vehicle door lock

Info

Publication number: WO2018103790A1
Application number: PCT/DE2017/101022
Authority: WO
Inventors: Thomas Waldmann
Original assignee: Kiekert Ag
Priority date: 2016-12-07
Filing date: 2017-11-24
Publication date: 2018-06-14
Also published as: DE102016123659A1

Abstract

The invention relates to a motor vehicle door lock comprising a locking mechanism (1, 2) substantially consisting of a rotary latch (1) and a pawl (2). According to the invention, there is also a lock case (4) for bearing of the locking mechanism component(s) (1, 2). At least one bearing bolt (5) is implemented having a bearing pin (5b) and a bearing pedestal (5a), wherein the bearing bolt (5) is anchored together with the bearing pedestal (5a) thereof in a bearing recess (4a) of the lock case (4). The bearing pin (5b) engages in a bearing opening (1b, 2b) of the locking mechanism component (1, 2) for rotatable bearing thereof on the bearing bolt (5). According to the invention, the bearing pedestal (5a) and the bearing recess (4a) are equipped with corresponding stop surfaces (6, 7) for rotationally fixed anchoring of the bearing bolt (5) in the lock case (4).

Description

Motor vehicle door lock

The invention relates to a motor vehicle door lock, comprising a locking mechanism consisting essentially of a catch and a pawl, and a lock case for supporting the locking component or parts, wherein at least one bearing bolt is provided with a bearing pin and a bearing pedestal, and wherein the bearing bolt with its bearing base is anchored in a bearing recess of the lock case, while the bearing pin engages in a bearing opening of the Gesperrebauteils to its rotatable mounting on the bearing pin.

A motor vehicle door lock of the construction described at the outset is well known in practice and is described by way of example in WO 2008/102097 A1. In this case, the procedure is usually such that the rotary latch, which is typically designed as a forked catch, as well as the locking pawl securing the rotary latch, are each pivotably or rotatably mounted on a bearing pin as a pivot axis. For this purpose, the respective bearing pin is anchored in the lock case. This applies both to the bearing pin of the rotary latch (rotary latch bearing pin) and for the bearing pin of the pawl (pawl bearing bolts) as both Gesperrebauteile.

In the closed position of the motor vehicle door lock, the locking mechanism holds a catch bolt previously retracted into the locking mechanism via the inlet opening. In this way, a motor vehicle door lock typically receiving in the interior of a motor vehicle door even when high tearing forces, for example in the event of a crash, do not jump open. For the interaction between the locking mechanism or the motor vehicle door lock in or on the motor vehicle door with the locking bolt on the other hand holds the motor vehicle door in the closed state of the motor vehicle door lock. Thus, the respective bearing pin for the Gesperrebauteil can accommodate in particular the occurring in the event of a crash considerable forces, the bearing pin has a significant diameter. If, for example, there is a lateral inclination of the rotary latch in the event of a crash under the effect of high tearing forces, then the problem nevertheless exists in such embodiments that the bearing pin with its bearing pedestal anchored in the lock case is torn out of the lock case or at least undergoes considerable deformations. Such deformations represent a not insignificant problem and can adversely affect the functional safety of Gesperres.

For this reason, there has already been approaches in the further prior art according to DE 196 31 262 A1, in which the bearing of the bearing pin allows an elastic displacement of the relevant Gesperrebauteils. In fact, in this context, the bearing of the bearing pin is propagated via elastically deformable bearing body. However, since the actually occurring tearing forces in the event of a crash can not be properly predicted either in terms of size or direction, there is still the risk of malfunction.

This also change other solutions such as that of DE 43 03 532 A1 in so far nothing, as there is a pivotal movement of the catch retarding friction brake is described. The various geometries of the bearing pin described in US Pat. No. 4,856,829 are also in need of improvement, because at this point predominantly plastic is used as the material. However, as is known, plastics tend to become brittle and / or brittle after prolonged service life, so that once again functional reliability suffers or may suffer. Here, the invention aims to provide a total remedy. The invention is based on the technical problem of further developing such a motor vehicle door lock so that overall functional reliability is increased, in particular in the event of a crash. To solve this technical problem, the invention proposes in a generic motor vehicle door lock that are equipped for non-rotatable anchoring of the bearing pin in the lock case of the bearing base and the bearing recess with corresponding stop surfaces. Specifically, it has proven in this context, when the bearing base and the bearing recess each have an oval, cam-like, keyhole-like or comparable cross-section. In addition, the design can alternatively or additionally be made so that the bearing base and the bearing recess each have a polygonal cross section. In all these cases, therefore, a geometric deviation of the previous embodiment of circular bearing base and associated bearing recess is explicitly pursued.

In fact, the state of the art usually proceeds in such a way that the bearing bolt, with its bearing pedestal anchored in the lock case and the bearing pin for supporting the relevant catch component, has hitherto been equipped predominantly circular or with a respective circular cross section. D. h., The bearing pin is typically a cylindrical bearing pin, while the bearing base is designed as a circular disk. Since the circular disk-shaped bearing base is held in a correspondingly shaped bearing recess of the lock case, on the one hand there is a risk that the bearing pin despite its anchoring in the lock case moves at attacking and high Aufreißkräften in the course of a crash or rotated about its longitudinal axis and a total of his Anchoring in the bearing recess is solved. As a result, inclinations of the bearing pin in the prior art are possible, which can lead directly to the fact that the associated locking undergoes an unwanted opening. Such unwanted openings in the event of a crash must be avoided. For only in a still closed motor vehicle door and an associated closed motor vehicle door lock can be ensured in such a crash that in particular the typically located inside the vehicle door security devices, such as a side airbag, side impact protection, etc. can develop their full effect and in the Protect the vehicle occupant optimally. According to the invention, the design of the bearing pedestal, which differs explicitly from the circular or circular cross-section, and also the bearing recess receiving the bearing pedestal with the corresponding and realized abutment surfaces ensure that the bearing bolt is anchored in the lock housing in a rotationally fixed manner. The abutment surfaces can be provided by edge surfaces of a respective oval cross-section as well as edge surfaces in a cam-like or a keyhole-like cross-section available. In any case, these all and deviate from the circular cross-section designs ensure that the bearing pin or its bearing base with respect to him receiving bearing recess in the lock case no rotations or rotations (more) can perform. Rather, the bearing pin is rotatably anchored in the lock case. As a result, any inclinations or inclinations of the bearing pin in the event of a crash as a result of attacking tearing forces can be largely avoided. As a result, the overall achieved crash safety or crash resistance.

Comparable advantages are observed in the case where the bearing pedestal and the bearing recess each have a polygonal cross-section. Such a polygonal cross-section provides with the thus inevitably realized corresponding stop surfaces again for the rotationally fixed anchoring of the bearing pin in the lock case. As a result, the advantages already described above are achieved, namely a non-rotatable anchoring of the bearing pin in the lock case and thereby the reduction the risk of any inclinations of the bearing pin and consequently the associated Gesperrebauteils against the lock case. Overall, this leads to a significantly increased reliability compared to the prior art. The same advantages and effects are observed when the bearing pin is anchored with its bearing base alternatively in a bearing recess of the associated Gesperrebauteils. In this case, the bearing pin engages in a bearing opening of the lock case for its rotatable mounting. According to the invention, the bearing pedestal and the bearing recess are now equipped with the corresponding stop surfaces for rotationally fixed anchoring of the bearing pin in the locking component. In doing so, comparable interpretations with matching advantages are pursued and achieved as before.

So that the bearing base can be properly anchored in the lock case or in the locking component, the lock case and the bearing base or the locking component and the bearing base have a substantially equal material thickness. But it is also possible that the material thickness of the lock case or the Gesperrebauteils exceeds that of the bearing base.

As a rule, however, the material thicknesses correspond on the one hand to the bearing base and on the other hand to the lock case or the locking component. As a result, the bearing base is properly anchored in the lock case or locking element and ensures that the bearing base is held rotatably in particular in the lock case or Gesperrebauteil. For the connection of bearing base and thus bearing pin and lock case respectively Gesperrebauteil recommends the use of conventional connection techniques such as riveting, welding, upsetting, etc. Similarly, can be used on adhesive bonding agent or an adhesive connection. In a particularly advantageous embodiment, the bearing base has a surface area which is more than three times the cross section of the bearing pin. As a result, the bearing base is equipped with a surface area significantly larger than that of the bearing pin. For in the prior art, for example, according to DE 10 2009 029 022 A1, a bearing pedestal is used whose surface area has approximately twice to two and a half times the cross-section of the bearing pin. As a result of the pursued enlargement according to the invention of the surface extension of the bearing pedestal in comparison with the prior art, in which three times the cross section of the bearing pin is set as the lower limit, a particularly intimate connection between the bearing pedestal and consequently the bearing bolt and the associated lock case or the corresponding locking component is achieved made available. This leads in conjunction with the rotationally fixed coupling of the bearing pin relative to the lock case respectively the Gesperrebauteil all in that the crash safety or crash resistance is significantly increased compared to the prior art.

The bearing pin generally has a length adapted to the material thickness of the ratchet component or the lock case. This ensures that the bearing pin does not protrude with respect to the ratchet component or the lock case. As a result, define the Gesperrebauteil or the lock case with the engaging therein pin a total homogeneous surface without protrusions or projections. This increases the reliability.

It has proven useful if the bearing pin and the lock case as well as the relevant Gesperrebauteil are made of steel. In particular, a high-strength steel is used at this point. By way of example, this may be a steel with a tensile strength of more than 500 N / mm ² and in particular more than 1000 N / mm ² . Moreover, it has been proven for reasons of simple and cost-effective production, when the ratchet member and / or the lock case are each designed as stamped components. That is, the Gesperrebauteil and / or the lock case are defined in the course of a stamping process from a regularly made of steel board and are available for further processing.

As already explained, the bearing pin is substantially cylindrical. As a result, the cylindrical bearing pin can engage in the corresponding and also cylindrical bearing opening, so that the desired pivotability of the locking member is achieved and is available. This applies both in the event that the bearing pin is anchored with its bearing base in the lock case and the protruding from the lock case or on the lock case upstanding bearing pin for the rotatable mounting of Gesperrebauteils is used thereon. Likewise, when the respective Gesperrebauteil is equipped with the anchored therein bearing pin, which engages with its protruding from the locking member or on the Gesperrebauteil bearing pin in the then defined in the lock box bearing opening.

The design is further and particularly advantageous still made such that the bearing base on the one hand and the bearing recess on the other hand are not only equipped with the corresponding stop surfaces. As a result, a frictional connection between the bearing base and the lock case or the Gesperrebauteil is already provided, which ensures the rotationally fixed connection with each other. According to a particularly preferred embodiment, both a positive and positive coupling of one hand, the bearing base and on the other hand, the bearing recess has proven to be particularly advantageous. In this case, the bearing recess of its size and design is adapted to the shape, size and design of the bearing base so that not only the desired adhesion is present, but in addition, a positive connection. As a result, a total of a motor vehicle door lock is provided, which is equipped with a particularly reliable locking mechanism. The reliability is maintained and in particular in the event of a crash and ensures overall that uncontrolled movements of the locking mechanism and in the worst case its opening can be reliably avoided. As a result, the safety for vehicle occupants is increased enormously. Here are the main benefits.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it:

1 shows a motor vehicle door lock according to the invention in a schematic plan view, and FIG. 2 shows a detailed view of the object according to FIG. 1 in the region of a bearing pin.

In the figures, a motor vehicle door lock is shown. The motor vehicle door lock has a locking mechanism 1, 2 consisting essentially of a rotary latch 1 and a pawl 2, which interact with each other in a conventional manner. In fact, the locking mechanism 1, 2 ensures that the motor vehicle door lock, which is normally located on or in a motor vehicle door, securely holds a locking bolt 3 to be recognized in FIG. 1 in a closed state. For this purpose, the locking pin 3 drives via an inlet mouth into the catch 1, which in turn is secured by means of the pawl 2. In this respect, the known and proven functionality is present and is observed.

The motor vehicle door lock shown in FIG. 1 has a lock case 4, which provides for the storage of or the Gesperrebauteile 1, 2. In the exemplary embodiment, the ratchet components 1, 2 are, on the one hand, the rotary latch 1 and, on the other hand, the pawl 2 as both components of the locking mechanism 1, 2 Gesperrebauteile 1, 2 now provide each associated bearing pin 5, which are constructed in the embodiment and not limiting substantially the same. 2 shows the detailed structure of the respective bearing pin 5, which can be used in principle in the embodiment both for the storage of the rotary latch 1 and for the storage of the pawl 2 and is used. In this case, in the overall embodiment, the procedure is such that the bearing pin 5 is anchored in the lock case 4. For this purpose, a bearing base 5a engages as part of the bearing pin 5 in a bearing recess 4a of the lock case 4 and is anchored in the bearing recess 4a in question. In principle, it is also possible to proceed in such a way that the bearing pin 5 is anchored in the relevant ratchet component 1, 2 or in the rotary latch 1 and the pawl 2. In this case, a bearing pin 5b serves as a further component of the bearing pin 5 to provide for a rotatable mounting of the thus equipped Gesperrebauteils 1, 2 in a bearing opening of the lock box 4. This is not shown.

In fact, the embodiment of FIGS. 1 and 2 shows a respective bearing pin 5, which is equipped with the bearing pin 5b and the bearing base 5a. The bearing base 5a engages in the bearing recess 4a of the lock case 4 and the bearing base 5a is anchored in the bearing recess 4a in question of the lock case 4. As a result, the bearing pin 5b of the bearing pin 5 is substantially perpendicular to a plane spanned by the lock case 4 level, so that the bearing pin 5b is arranged to support the Gesperrebauteils 1, 2. For this purpose, the bearing pin 5b of the bearing pin 5 engages in an associated bearing opening 1 b and 2b of the relevant Gesperrebauteils 1, 2 for its rotatable mounting on the bearing pin 5 a.

According to the invention and for the rotationally fixed anchoring of the bearing pin 5 in the lock case 4 in the context of the embodiment of the bearing base 5a of the respective bearing pin 5 and the bearing recess 4a of the lock case 4 in the illustrated example case with corresponding stop surfaces 6, 7 equipped. In fact, the bearing base 5a has one or more edge-side abutment surfaces 6. The abutment surfaces 6 on the bearing base 5a interact with associated abutment surfaces 7 on the edge of the bearing socket 5a receiving bearing recess 4a in the lock case 4. In the illustrated embodiment, it is in the interaction between the two Stop surfaces 6, 7 and thus the bearing base 5a in the interior of the bearing recess 4a to a frictional interaction. Very particularly preferably and according to the illustration, a force-locking as well as positive interaction between the respective stop surfaces 6, 7 is provided. This is done in the context of the illustrated example case. For this purpose, the bearing base 5a is equipped with a polygonal cross-section as shown in FIG. A polygonal cross-section of approximately the same shape and size has the bearing socket 5a accommodating bearing recess 4a in the lock box 4. Thereby, the positive and non-positive coupling between the one hand, the bearing base 5a and the other part of the bearing base 5a receiving bearing recess 4a is realized. In principle, it is also possible in this context to work with a respective oval, cam-like or also a keyhole-like cross section for the bearing pedestal 5a and the bearing recess 4a. This is not shown. It can be seen on the basis of the sectional illustration in FIG. 2 that in the exemplary embodiment the lock case 4 and the bearing base 5a have a substantially identical material thickness S. This ensures that the bearing base 5a is received without projection on a surface of the lock case 4 in the associated bearing recess 4a. The connection between the bearing base 5a and the bearing recess 4a and consequently the bearing pin 5 and the lock case 4 can be done in the embodiment in any conceivable manner. For example, it is possible to To weld bearing pin 5 with the lock case 4 or to provide a riveted joint at this point. A compression connection between the bearing pin 5 and the lock case 4 is conceivable and is included within the scope of the invention. Likewise an adhesive compound with additional consideration of an adhesive agent.

The supervision of the stored in the bearing recess 4a bearing base 5a according to FIG. 2 also makes it clear that the bearing base 5a is equipped with a surface area or occupied by him area A, which in the exemplary embodiment more than three times the cross-section or the corresponding cross-sectional area Q of the bearing pin 5b is. By this rule of dimension, a particularly intimate connection between the bearing pin 5 and the lock case 4 is realized. In addition, this ensures that even in a crash and associated with it and indicated by in Fig. 1 Tearing forces F caused deformations of the bearing pin 5 are practically not observed or only in comparison to the prior art reduced scope. It is particularly preferred if the bearing pedestal 5a has a surface area or an area A which is even five times the cross section Q of the bearing pin 5b or even more.

The bearing pin 5b has a length adapted to the material thickness T of the locking component 1, 2. As a result, any protrusions of the bearing pin 5b are prevented by means of a plane spanned and defined by the locking element 1, 2. The bearing pin 5 is usually made of a high strength steel with the characteristics described in the introduction. The same applies to the lock plate 4 and the Gesperrebauteile 1, 2. Moreover, it has been proven that the Gesperrebauteile 1, 2 and also the lock case 4 are each designed as stamped components. This allows a particularly simple and cost-effective production.

Claims

claims:

1. A motor vehicle door lock, comprising a locking mechanism (1, 2) consisting essentially of a rotary latch (1) and a pawl (2), and a lock case (4) for mounting the latching component or parts (1, 2), at least one Bearing pin (5) with a bearing pin (5b) and a bearing base (5a) is provided, and wherein the bearing pin (5) with its bearing base (5a) in a bearing recess (4a) of the lock case (4) is anchored, while the bearing pin ( 5b) engages in a bearing opening (1b, 2b) of the ratchet member (1, 2) to the rotatable mounting on the bearing pin (5), characterized in that for the rotationally fixed anchoring of the bearing pin (5) in the lock case (4) of the bearing base (5a) and the bearing recess (4a) with corresponding stop surfaces (6, 7) are equipped.

2. Motor vehicle door lock, with a locking mechanism (1, 2) consisting essentially of a rotary latch (1) and pawl (2), and with a lock case (4) for supporting the or the locking members (s) (1, 2), wherein at least one Bearing pin (5) with a bearing pin (5b) and a bearing base (5a) is provided, and wherein the bearing pin (5) with its bearing base (5a) in a bearing recess of the locking member (1, 2) is anchored, while the bearing pin (5b ) engages in a bearing opening of the lock case (4) to the rotatable mounting on the bearing pin (5), characterized in that for rotationally fixed anchoring of the bearing pin (5) in the locking component (1, 2) of the bearing base (5a) and the bearing recess with corresponding stop surfaces (6, 7) are equipped.

3. Motor vehicle door lock according to claim 1 or 2, characterized in that the bearing base (5a) and the bearing recess (4a) each have an oval, cam-like, keyhole-like or comparable cross-section.

4. Motor vehicle door lock according to one of claims 1 to 3, characterized in that the bearing base (5a) and the bearing recess (4a) each have a polygonal cross-section.

5. Motor vehicle door lock according to one of claims 1 to 4, characterized in that the lock case (4) or the Gesperrebauteil (1, 2) and the bearing base (5a) have a substantially equal material thickness (S).

6. Motor vehicle door lock according to one of claims 1 to 5, characterized in that the bearing base (5a) with a surface area

(Area A) which is more than three times the cross-section (Q) of the bearing pin (5b).

7. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the bearing base (5a) in the bearing recess (4a) non-positively, in particular non-positively and positively engages.

8. Motor vehicle door lock according to one of claims 1 to 7, characterized in that both Gesperrebauteile (1, 2) and / or the lock case (4) are produced as stamped components made of steel, in particular a high-strength steel.

9. Motor vehicle door lock according to one of claims 1 to 8, characterized in that the bearing pin (5b) has a to the material thickness (T) of the Gesperrebauteils (1, 2) and the lock case (4) adapted length.

10. Motor vehicle door lock according to one of claims 1 to 9, characterized in that the bearing pin (5 b) is cylindrical and substantially centrally on the bearing base (5 a) stands up.