DE102007041477A1 - Multi-part locking component for a motor vehicle lock - Google Patents

Abstract

Locking component (1) for a motor vehicle lock (2), which has at least one blocking surface (3), comprising at least one base body (4) and at least one insert component (5) which at least partially forms the at least one blocking surface (3).

Description

The The present invention relates to a ratchet member for a motor vehicle lock, in particular a rotary latch. Such Gesperrebauteil is particularly for locking motor vehicle doors or used flaps.

usual Motor vehicle locks are currently using a rotary latch and a pawl executed. During the closing process a locking pin is received by the catch, the fixed to a component of the vehicle body or an adjacent one Motor vehicle door is connected. The rotary latch turns so that it receives the locking pin in a recess. If the catch has a predetermined degree of containment achieved, turning back the catch by the engagement prevents the pawl. For this purpose comes the pawl on at least one blocking surface of the rotary latch to the plant, the so-called Vorrast and / or Haupastast.

The catch and the pawl are regularly made of metal in this case for reasons of strength and can, if necessary, be provided with a corrosion coating and / or a lubricious coating. In addition, plastic sheaths may be provided for reasons of noise damping. Excluded from the sheath are regularly the locking surfaces on the main catch (and pre-rest) of the catch and the locking surface of the pawl. An example of such a configuration of the Gesperrebauteile can the DE-OS-2 320 351 be removed.

Such Locking components are subject to a variety of requirements. So stand in particular the wear resistance, the noise behavior at Contact each other, the corrosion resistance, the cheap Production and the weight in the focus of the further development of this Gesperrebauteile. Especially these, partly opposing, Requirements on the Gesperrebauteile currently lead to a rather complex production, which comes at a considerable cost. This is particularly important because these components produced in mass production.

Of these, It is an object of the present invention, with reference At least partially attributed to the prior art problems to solve. In particular, while Gesperrebauteile be specified which are inexpensive to produce and at the same time have particularly suitable material properties. Continue to also locking components can be specified, which together in one can interact in a particularly quiet way.

These Tasks are solved with a Gesperrebauteil according to the Characteristics of claim 1. Further advantageous embodiments of Invention are in the dependent formulated claims specified. It should be noted that in the dependent formulated claims listed features be combined with each other in any technologically meaningful way can and show further embodiments of the invention. In addition, the description, in particular in connection with the Figures, further preferred embodiments of the invention.

The Locking component according to the invention for a Motor vehicle lock having at least one blocking surface, comprises at least one main body and at least one Insertion component, which is the at least one blocking surface at least partially forms.

at the Gesperrebauteil come in principle any bars or closure elements into consideration, in particular focus of the present Invention are, however, pawl and rotary latch in the usual Motor vehicle door locks. Especially stands here the catch in the foreground. Such a Gesperrebauteil points at least one blocking surface, ie the surface, with the Gesperrebauteil blocks another component of the motor vehicle lock or arrested or self-blocked or arrested. In the Rotary latch are often provided two restricted areas, namely once the so-called Vorrast and the so-called Primary position.

The Gesperrebauteil is now with at least one body and an insert component executed. It is first clarifying that the insert component and the Basic body are two separate parts that (especially solvable) connected to each other. The insert component is regular executed in one piece and also forms a kind of molded body and especially not just a coating or the like. Basic body and Insert component preferably differ in at least one the following properties: hardness, wear resistance, Elasticity, corrosion resistance, this being preferably for the base body and / or the insert component as a whole. It is very particularly preferred that the main body elastic and the insert component performed harder in relation to each other is.

Regularly, the insert component is significantly smaller than the main body, in particular only makes up at most a quarter of the volume of the body, in particular only a tenth. It is further preferred that an insert component is not only provided on a blocking surface of the ratchet component, but on all blocking surfaces. This forms the one Satzbauteil each preferred the entire locking surface. In this case, the contact of the ratchet component described here according to the invention with its counterpart will now preferably take place exclusively via the insert component.

With this combination of body and insert component can the Gesperrebauteil in terms of material properties easy and cost-effective to the respective requirements in the motor vehicle lock be adjusted. So especially with regard to the mass production of such Gesperrebauteile for different Motor vehicle locks same insert components for different basic bodies are used or turned over. Similarly, then the desired Properties of the locking component with regard to noise damping, Corrosion protection, strength, weight, etc. targeted At the same time, only a minor post-processing of Gesperrebauteile required for each different motor vehicle locks is. This makes the enormous economic effect of the invention recognizable.

According to one Continuing the Gesperrebauteils is also suggested that the at least one insert component in a receptacle of the base body is fixed. In other words, that also means that the insert component not only outside the body but projects into inner areas of the body. In particular, the receptacle is formed so that an undercut present, which allows a kind of positive engagement with the insert component. Thus, the insert component, possibly with a desired game, be securely fixed for the operation of Gesperrebauteils. The receptacle forms in particular an inner cavity in the Body.

Further It is also proposed that the at least one insert component has a stop surface forming the blocking surface, which is spaced from the main body. The insert component points Accordingly, for example, in the peripheral region of the Gesperrebauteils, a stop plate on. The stop plate forms in particular a substantially flat contact surface in the motor vehicle lock then the function of the blocking surface takes over. at the variant described here is between stop plate and hen the body vorgese a distance. With this distance, For example, up to 5 mm, it is ensured that the stop plate not directly on the peripheral region of the body rests. This is intended in the later operation of a motor vehicle lock allow that when in contact with the other locking member a Noise development due to the impact plate striking on the main body is avoided, so that a quieter Operation of the motor vehicle lock is enabled.

About that In addition, it is considered advantageous that between the at least a base body and the at least one insert component at least partially a damping material is arranged. This relates in particular to the structure described above, in which the stop plates spaced from the body is. Then the damping material between the stop plate and be provided the peripheral region of a base body. Of course, the damping material in other Regions positioned between insert component and body be such as in the field of recording. As damping material especially plastics are considered. Very particularly preferred is here that the damping material is part of the plastic sheath the Gesperrebauteils is. This also leads to a special simple production and low noise operation of the Motor vehicle lock.

According to a development of the Gesperrebauteils is also proposed that the at least one insert member is designed with a respect to the at least one body harder material. This is moved away from the usual production, in which the rotary latch is made with a base body, which is optionally cured in the area of the blocking surfaces. This complex heat treatment of the base body is avoided here by the fact that a separate insert component is integrated. As material for the main body, in particular the material X5CrNi1810 is proposed, which is very well deformable and has a relatively tough material property. The percent by weight alloying elements may be given as follows: maximum 0.07% base, 8.0 / 10.5% nickel, 17.0 / 19.5% chromium. The main body can be prepared in particular by a simple punching, in which case no particularly high accuracy must be achieved by the separate formation of the blocking surfaces. For example, the material MS- ^W® 1200 (MS- ^W® : German trademark of ThyssenKrupp Steel AG) or steel C45 with subsequent heat treatment to increase the hardness is proposed for the insert component. In particular, a steel having the following composition can be used for the insert component: maximum 0.18 carbon, maximum 2.0% manganese, maximum 1.0% silicon, maximum 0.020% phosphorus, maximum 0.02% sulfur, maximum 0.015% aluminum and optionally titanium and boron (fully killed fine grain structural steel). Although it is fundamentally possible for the separate insert component to additionally be connected to the basic body via fastening means (eg screw, bolts or similar securing means), this can preferably be dispensed with.

In addition, it is suggested that the main body at least two components around between which at least one receptacle for an insert component is provided. For this purpose, the basic body can be designed, for example, with two metallic plates which have mutually corresponding surfaces. These two components then form a receptacle for the insert component when abutting one another. This makes it possible to insert the insert component, for example, in one of the components and to realize a fixation of the insert component to the components or the base body by the, formed with a distinction, recording and the joining of the two components. Again, a particularly simple and inexpensive production can be realized.

According to one Further development is also proposed that the at least one insert component a having the blocking surface forming stop plate, the relative is arranged to be movable at least one base body. This movement is preferably damped with a corresponding damping material and extends a maximum of a few millimeters or Tenths of a millimeter. Nevertheless, in this way, the contact with the other Gesperrebauteil noise damped be executed. It is particularly preferred that only a part of the insert component relative to the main body moves, for example, only the stop plate. This can be special be achieved by that between the stop plate and a in the recording head of the insert component, a spring element is trained.

All the invention finds particular application in a motor vehicle, so that here has a motor vehicle having at least one motor vehicle lock with a rotary latch, which is described as a here according to the invention Gesperrebauteil is formed.

The Invention and the technical environment are based on the figures explained in more detail. It should be noted that the figures a particularly preferred embodiment However, the invention is not limited thereto is. They show schematically:

1 : the general structure of a motor vehicle with a motor vehicle lock,

2 FIG. 1: a first partial perspective view of a variant embodiment of the ratchet component, FIG.

3 FIG. 2 is a plan view of a part of a ratchet member with insert member. FIG.

4 : the ratchet component off 3 with a plastic sheath, and

5 : A detail of another embodiment of a Gesperrebauteils with insert component.

1 serves to illustrate the main field of application of the invention. Shown is schematically a motor vehicle 11 with a door 17 , The door 17 has a motor vehicle lock 2 on. In this motor vehicle lock 2 are schematically the catch 12 and the pawl 13 illustrated here each as a Gesperrebauteil 1 can be designated. The catch 12 has a locking pin 14 picked up and is through the pawl 13 bewegungsblockiert. At the point, on the pawl 13 and catch 12 are in contact with each other, are the restricted areas 3 educated.

2 now shows a possible embodiment of a Gesperrebauteils 1 , here a catch. The locking component 1 is in this case by a basic body corresponding to the rotary latch 4 educated. The main body 4 now points in the area of the restricted area 3 a recording 6 for an insert component 5 on. The recording 6 is here as a recess in a lateral surface of the body 4 educated. The main body 4 is doing here in 2 in the area of the main stop 23 and the pre-rest 24 illustrated here only in the area of the main branch 23 the blocking area 3 with an insert component 5 is executed.

In the illustrated here two-part body 4 it is a first component for a two-part rotary latch, so that a corresponding corresponding component is placed here from above. As a spacer between the two components are the main body 4 here with pimples 22 and a marginal increase 20 executed. The Randerhöhung 20 also has different and more interruptions over the scope 21 on, which should allow later penetration of damping material.

3 shows a main body 4 that out 2 is similar. Here in this plan view is the preferred distance to be observed 18 between a stop plate 7 of the insert component 5 and the body 4 to recognize yourself well. Now, without further ado, a similar component can be placed corresponding thereto and the ratchet component then with a plastic casing 19 surrounded by the interruptions 21 the Randerhöhung 20 through and in the distance 18 extends. The result may be, for example 4 be removed. Thus, the main body is now essentially of the plastic casing 19 surrounded, only the stop plate 7 of the insert component 5 is free and thus forms the blocking area 3 ,

5 shows in a cross section through a finished trained catch 12 in the area of a blocking area 3 , The main body 4 is here with a first component 9 and a second component 10 formed between which a cavity for receiving damping material 8th is provided. Between the first component 9 and the second component 10 is also a recording 6 for a head 16 an insert component 5 intended. This one is opposite a jetty 15 of the insert component 5 executed thickened, so that this between the first component 9 and the second component 10 is held securely (undercut). The jetty 15 now has such a length that the stop plate 7 over the circumference of the body 4 with a distance 18 protrudes. The stop plate 7 which is ultimately a restricted area 3 the catch 12 forms, for example, the main load, so can with the damping material 8th be underlaid. This is the contact of the other Gesperrebauteils with the stop plate 7 determine a damping effect, at the same time a low noise re contacting and thus a low-noise operation of the motor vehicle lock are possible.

1

Gesperrebauteil

2

Motor vehicle lock

3

blocking surface

4

body

5

application component

6

admission

7

stop plate

8th

damping material

9

first component

10

second component

11

motor vehicle

12

catch

13

pawl

14

locking pin

15

web

16

head

17

door

18

distance

19

Plastic sheathing

20

marginal increase

21

interruption

22

burl

23

primary position

24

first position

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 2320351 [0003]

Claims (8)

Locking element ( 1 ) for a motor vehicle lock ( 2 ), which has at least one blocking area ( 3 ) comprising at least one main body ( 4 ) and at least one insert component ( 5 ), which has the at least one blocking area ( 3 ) at least partially forms. Locking element ( 1 ) according to claim 1, wherein the at least one insert component ( 5 ) in a recording ( 6 ) of the basic body ( 4 ) is fixed. Locking element ( 1 ) according to claim 1 or 2, wherein the at least one insert component ( 5 ) one the blocking surface ( 3 ) forming stop plate ( 7 ), which of the main body ( 4 ) is spaced. Locking element ( 1 ) according to one of the preceding claims, in which between the at least one base body ( 4 ) and the at least one insert component ( 5 ) at least partially a damping material ( 8th ) is arranged. Locking element ( 1 ) according to one of the preceding claims, in which the at least one insert component ( 5 ) with one opposite to the at least one base body ( 4 ) harder material is executed. Locking element ( 1 ) according to one of the preceding claims, in which the main body ( 4 ) at least two components ( 9 . 10 ) between which at least one receptacle ( 6 ) for an insert component ( 5 ) is provided. Locking element ( 1 ) according to one of the preceding claims, in which the at least one insert component ( 5 ) one the blocking surface ( 3 ) forming stop plate ( 7 ), which relative to the at least one base body ( 4 ) is movably arranged. Motor vehicle ( 11 ) comprising at least one motor vehicle lock ( 2 ) with a catch ( 12 ) used as a locking component ( 1 ) is formed according to one of the preceding claims.