EP1101889B1 - Motor vehicle door lock - Google Patents

Description

The present invention relates to a motor vehicle door lock according to the The preamble of claim 1 and the preamble of claim 6.

Under motor vehicle door lock there is generally a side door lock, a rear door lock, a tailgate lock, a hood lock or the like of a motor vehicle to understand.

In practice there is already a motor vehicle door lock with the aforementioned Features known. One such, shown by way of example in FIG. 1 Motor vehicle door lock has a metallic support plate with a Flat side and an angled side section. In the carrier plate an inlet slot extends from the flat side to the side section for a locking block assigned to the motor vehicle door lock. A locking mechanism of the motor vehicle door lock can lock the locking block Secure in the inlet slot in the area of the flat side. To be proportionate to achieve high stability and resilience, especially in the event of an accident, is the inlet slot in the area of the flat side with an angled Provided edge portion that extends along a portion of the edge of the inlet slot extends and leads to a stiffening of the support plate. so Motor vehicle door locks are constructed, for example, from DE 37 13 558 C1 known.

It has been shown that a motor vehicle door lock of the known type Carrier plate made of relatively thick plate material required if the desired rigidity and resilience, especially high tensile strength, should be achieved.

The invention has for its object to provide a motor vehicle door lock, that the use of a carrier plate made of thinner plate material with comparable tensile strength of the motor vehicle door lock and / or has a higher rigidity or tensile strength.

The above object is achieved by a motor vehicle door lock solved according to claim 1. A secondary solution describes claim 6. Advantageous further training is the subject of the corresponding Dependent claims.

A basic idea of the present invention is the angled one Edge section around the transition from the flat side of the carrier plate to "pull around" or extend to the side portion of the carrier plate. It has been shown that this results in a surprisingly high rigidity the carrier plate or the motor vehicle door lock can be reached. Since the Locking mechanism of the motor vehicle door lock, in particular a Lock latch to secure an assigned to the motor vehicle door lock Has locking block in the inlet slot, indirectly or directly on the Carrier plate is stored, are accordingly a higher tensile strength and higher holding forces of the motor vehicle door lock in the closed Condition when using a carrier plate made of plate material with previously usual thickness achievable. In individual cases, the proposed solution even when using a carrier plate made of thinner plate material the state of the art for higher rigidity and tensile strength of the motor vehicle door lock.

Optimal rigidity and tensile strength are preferred achieved that the angled edge portion around the entire inlet slot extends around or along the entire edge of the inlet slot. Alternatively, the angled edge section can also be used in some areas be interrupted.

A simple manufacture is preferably achieved in that the first flat support plate with angled or bent already Edge section with a relatively large bending radius in the area of Transition bent from the flat side to the side portion of the carrier plate or is folded. Surprisingly, it has been shown that despite or precisely because of this large bending radius, great rigidity and tensile strength of the motor vehicle door lock can be achieved.

Preferably, the edge portion is outwardly, i.e. H. from the locking mechanism pointing, angled or bent.

A simple manufacture is achieved in that the edge section is a along the edge of the inlet slot at least substantially the same Has width and thickness. In particular, the aforementioned bending radius adapted to this.

However, the width and / or thickness of the edge portion along the Edge of the inlet slot also vary, for example, for an optimal one Compromise of stiffening and minimizing the required bending radius to enable the transition from the flat side to the side section and still a very high or optimal stiffening in other areas to reach through the edge section.

Fig. 1

eine vereinfachte, perspektivische Darstellung eines Kraftfahrzeug-Türschlosses gemäß dem Stand der Technik;

Fig. 2

eine vereinfachte, perspektivische Darstellung eines vorschlagsgemäßen Kraftfahrzeug-Türschlosses gemäß einer bevorzugten Ausführungsform; und

Fig. 3

einen Schnitt des Kraftfahrzeug-Türschlosses gemäß Fig. 2 entlang Linie III-III.

Further details, features and advantages of the present invention are explained in more detail below with reference to the drawing. It shows:

Fig. 1

a simplified, perspective view of a motor vehicle door lock according to the prior art;

Fig. 2

a simplified, perspective view of a proposed motor vehicle door lock according to a preferred embodiment; and

Fig. 3

a section of the motor vehicle door lock according to FIG. 2 along line III-III.

Fig. 1 shows a motor vehicle door lock 1 according to the prior art. The Motor vehicle door lock 1 has a metallic carrier plate 2 and an associated one Locking mechanism 3, which is only indicated by dash-dotted lines.

The carrier plate 2 has a flat side 4, which is usually an outer side Forms flat side of the motor vehicle door lock 1, and one to the flat side 4 angled or beveled side section 5. The carrier plate 2 also has an opening designed as an opening in the carrier plate 2 Inlet slot 6, which extends from the flat side 4 of the carrier plate 2 to extends the side section 5 of the carrier plate 2.

The inlet slot 6 is for an associated one, not shown in FIG. 1 Closing block 7 is provided (see FIG. 3), which, when the motor vehicle door is closed, Tailgate or the like is inserted into the inlet slot 6 and in the inlet slot 6 in the area of the flat side 4 by the associated locking mechanism 3, which are mounted directly or indirectly on the carrier plate 2 or connected to it, can be secured.

The inlet slot 6 is angled in the area of the flat side 4 Provided edge portion 8, which is in the area of the flat side 4 along the Edge 9 of the inlet slot 6 extends. The edge section 8 is in one piece formed with the support plate 2 and by turning outwards, d. H. of the locking mechanism 3, manufactured. The edge section 8 extends 1 also around an end region 10 of the Inlet slot 6 around the flat side 4, so that with respect to the Longitudinal extension of the inlet slot 6 opposing areas of the edge section 8 are connected to one another in the end region 10. However, this is not absolutely necessary.

The present invention is based on a preferred one Embodiment of a proposed motor vehicle door lock 1 2 and 3 explained in more detail. For the same or similar parts and elements become the same reference numerals as in the embodiment 1, a repeated description being omitted is, but essentially only differences or modifications compared to the prior art described above become.

Fig. 2 shows the proposed motor vehicle door lock 1 in a to Fig. 1 corresponding perspective representation. Is clearly recognizable that the edge portion 8 of the flat side 4 of the support plate 2 over the transition from the flat side 4 to the side section 5 into the Side section 5 extends along the edge 9 of the inlet slot 6. At the The example of the illustration is the angled or bent edge section 8 also around an end region 11 of the inlet slot 6 on the side section 5 trained throughout. However, this is not absolutely necessary. Preferably, however, as shown, the edge section 8 is around the entire Edge 9 of the inlet slot 6 is continuously formed around, extends so preferably along the entire edge 9 of the inlet slot 6th

3 shows that the edge section 8 at least via the transition from the flat side 4 to the side section 5 extends along the edge 9 of the inlet slot 6 and here after is angled or bent outside.

Fig. 3 illustrates that the bending radius R with which the flat side 4 of the carrier plate 2 passes into the side section 5 of the carrier plate 2, relatively is large compared to the prior art. The bending radius R is chosen at least so large that the formation of the edge section 8 around this bending area, i.e. at the transition from the flat side 4 to side section 5 is possible.

The bending radius R preferably corresponds to the edge section in this way 8 that the edge section 8 in the curvature or bending area of the transition is not overstretched from the flat side 4 to the side section 5 or does not tear. In particular, the bending radius R is as small as possible, however chosen significantly larger than in the prior art.

The bending radius R naturally depends on the width B of the edge section 8, i.e. H. by the amount by which the edge section 8 from the surface of the carrier plate 2 - here outwards - protrudes in the bending area of the transition from the flat side 4 to the side section 5.

If necessary, the width B of the edge section 8 along the edge 9 of the Inlet slot 6 vary. In this way, optimal stiffening, depending on the load on the carrier plate 2 can be achieved. In particular, it can when reducing the width B in the bending or transition area from the Flat side 4 to side section 5 a reduction in the bending radius R - if desired - can be achieved.

The possible minimum bending radius R naturally depends on the properties of the material used, especially its ductility.

Furthermore, the bending radius R can vary from the thickness D of the edge section 8, which is usually the thickness of the plate material used for the carrier plate 2 corresponds to be influenced. If desired, the thickness D of the edge section 8 vary along the edge 9 of the inlet slot 6. This can be done in particular by deforming the plate material in the area of the Edge section 8 can be reached, for example by upsetting.

The proposed design of the motor vehicle door lock 1 or of the edge section 8 leads to a surprisingly large increase in Rigidity of the carrier plate 2 and the tensile strength of the motor vehicle door lock 1.

The proposed motor vehicle door lock 1 is also proportional easy to manufacture. For example, before turning the side section 5 the inlet slot 6 from the still flat carrier plate 2 with formation of the proposed, preferably closed revolving Stamped out edge section 8 and then the side section 5 with bent the bending radius R. In particular, it is the carrier plate 2 So around a shaped or bent part made of sheet metal.

In Fig. 3 is assigned to the proposed motor vehicle door lock 1 Closing block 7 indicated, which is inserted into the inlet slot 6 and in the area of the flat side 4 by the locking mechanism 3, here a lock latch 12 of the locking mechanism 3 is secured. The motor vehicle door lock 1 is located so here in the closed state.

The locking mechanism 3 is preferably at least partially directly on the support plate 2 stored. This applies in particular to the lock latch 12 leads the stable support plate 2 to high rigidity, resilience and Tear resistance of the motor vehicle door lock 1.

Of course, the support plate 2 further turns, other Recesses or approaches, for example for mounting the locking mechanism 3 or the like. The motor vehicle door lock 1 has in particular other otherwise common parts, such as a housing, a cover Actuator or position sensors, which are here for simplicity are omitted.

The offers a completely different solution to the problems mentioned above Alternative of claim 7, characterized in that the carrier plate 2 as a plastic molded part, in particular as a plastic injection molded part a high-strength plastic and that the angled Edge section 8 from the flat side 4 via the transition from the flat side 4 to the side section 5 out into the side section 5 along the Edge 9 of the inlet slot 6 extends.

In particular, it is recommended that the plastic of the carrier plate 2 a reinforced with additives, especially fiber reinforced or fabric reinforced Is plastic.

With this alternative, especially in an injection molding process, completely form the angled edge section 8 from the start, so that the stiffening function results perfectly. possibly This measure is particularly successful in terms of safety sensitive component motor vehicle door lock to a lighter version with a non-metallic carrier plate 2 to come.

High-strength plastics are from the prior art in a variety of Embodiments known. On the relevant specialist literature for in particular fiber-reinforced plastics that are in constant development may be referenced (e.g. Römpp "Chemie", 10th edition, volume 2, 1997, page 1289).

Claims (10)

1. A motor vehicle door lock (1) with a metallic carrier plate (2) and an assigned locking mechanism (3), wherein the carrier plate (2) comprises a flat side (4), a side section (5) that is bent relative thereto and an inlet slot (6) for a locking hook (7) assigned to the motor vehicle door lock (1), wherein said inlet slot extends from the flat side (4) into the side section (5), wherein the locking hook can be secured in the inlet slot (6) in the region of the flat side (4) by the locking mechanism (3), and wherein the inlet slot (6) contains an angled edge section (8) that extends at least along part of the edge (9) of the inlet slot (6) in the region of the flat side (4),
   characterized by the fact
   that the angled edge section (8) extends from the flat side (4) into the side section (5) over the-transition from the flat side (4) to the side section (5), namely along the edge (9) of the inlet slot (6), wherein the transition from the flat side (4) of the carrier plate (2) to the side section (5) is realized with a bending radius (R) that corresponds to the ductility of the edge section (8) in the transition region.
2. The motor vehicle door lock according to Claim 1, characterized by the fact that the deformation of the carrier plate (2) is at least essentially realized by only utilizing bending processes.
3. The motor vehicle door lock according to one of the preceding claims, characterized by the fact that the edge section (8) continuously extends along the entire edge (9) of the inlet slot (6).
4. The motor vehicle door lock according to one of the preceding claims, characterized by the fact that the edge section (8) is angled or bent outward.
5. The motor vehicle door lock according to one of the preceding claims, characterized by the fact that the width (B) and/or thickness (D) of the edge section (8) vary/varies along the edge (9).
6. A motor vehicle door lock (1) with a carrier plate (2) and an assigned locking mechanism (3), wherein the carrier plate (2) comprises a flat side (4), a side section (5) that is bent relative thereto and an inlet slot (6) for a locking hook (7) assigned to the motor vehicle door lock (1), wherein said inlet slot extends from the flat side (4) into the side section (5), wherein the locking hook can be secured in the inlet slot (6) in the region of the flat side (4) by the locking mechanism (3), and wherein the inlet slot (6) contains an angled edge section (8) that extends at least along part of the edge (9) of the inlet slot (6) in the region of the flat side (4),
   characterized by the fact
   that the carrier plate (2) consist of a molded plastic part, in particular, an injection-molded plastic part of a high-strength plastic material, and
   by the fact that the angled edge section (8) extends from the flat side (4) into the side section (5) over the transition from the flat side (4) to the side section (5), namely along the edge (9) of the inlet slot (6).
7. The motor vehicle door lock according to Claim 6, characterized by the fact that the plastic material of the carrier plate (2) consists of a plastic that is reinforced with additives, in particular, with fibers or a fabric.
8. The motor vehicle door lock according to Claim 6 or 7, characterized by the fact that the edge section (8) continuously extends along the entire edge (9) of the inlet slot (6).
9. The motor vehicle door lock according to one of Claims 6 - 8, characterized by the fact that the edge section (8) is angled or bent outward.
10. The motor vehicle door lock according to one of Claims 6 - 9, characterized by the fact that the width (B) and/or thickness (D) of the edge section (8) vary/varies along the edge (9).

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