EP2031164A2 - 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 present invention relates to a Gesperrebauteil for a motor vehicle lock, in particular a rotary latch. Such a Gesperrebauteil is used in particular for locking motor vehicle doors or flaps.

Usual motor vehicle locks are currently running with a catch and a pawl. During the closing operation, a locking pin is received by the rotary latch, which is firmly connected to a component of the vehicle body or an adjacent vehicle door. In this case, the rotary latch rotates so that it receives the locking pin in a recess. If the catch has reached a predetermined degree of containment, a reverse rotation of the catch is prevented by the engagement of the pawl. For this purpose, the pawl comes to at least one locking surface of the catch to the plant, the so-called pre-catch and / or main catch.

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. In particular, the wear resistance, the noise behavior in contact with each other, the corrosion resistance, the cost-effective production and the weight stand in the focus of the further development of these Gesperrebauteile. Especially these, in part contradictory, requirements on the Gesperrebauteile currently lead to a rather complex production, which is accompanied by considerable costs. This is particularly important because these components are manufactured in mass production.

On this basis, it is an object of the present invention, at least partially solve the problems described with reference to the prior art. In particular, while Gesperrebauteile are specified, which are inexpensive to produce and at the same time have particularly suitable material properties. Next also Gesperrebauteile should be specified, which can cooperate with each other in a particularly quiet manner.

These objects are achieved with a Gesperrebauteil 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 in the dependent formulated claims can be combined with each other in any technologically meaningful way 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 ratchet component according to the invention for a motor vehicle lock, which has at least one blocking surface, comprises at least one base body and at least one insert component which at least partially forms the at least one blocking surface.

In principle, any latch or closure elements are considered in the ratchet component, in particular focus of the present invention However, pawl and catch are in conventional motor vehicle door locks. Especially here is the catch in the foreground. Such a locking component has at least one blocking surface, ie the surface with which the locking component blocks or locks another component of the motor vehicle lock or is itself blocked or locked. In the case of the catch often two blocking surfaces are provided, namely once the so-called pre-catch and the so-called main catch.

The Gesperrebauteil is now executed with at least one main body and an insert component. It should first be made clear that the insert component and the main body are two separate parts that are (in particular releasably) connected to each other. The insert component is regularly executed in one piece and also forms a kind of molded body and in particular not only a coating or the like. The base body and insert component preferably differ in at least one of the following properties: hardness, wear resistance, elasticity, corrosion resistance, this preferably applying to the main body and / or the insert component as a whole. It is very particularly preferred that the base body is made more elastic and the insert component harder in relation to each other.

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. In each case, the insert component preferably forms the entire blocking 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 base body and insert component, the ratchet member can be easily and inexpensively adapted to the respective requirements in the motor vehicle lock in terms of material properties. Thus, in particular with regard to the mass production of such Gesperrebauteile for different motor vehicle locks same insert components for different body can be used or reversed. Likewise, the desired properties of the Gesperrebauteils can then be selectively adjusted in terms of noise reduction, corrosion protection, strength, weight, etc., while only a small post-processing of Gesperrebauteile for each different motor vehicle locks is required. This makes the enormous economic effect of the invention recognizable.

According to one embodiment of the Gesperrebauteils is also proposed that the at least one insert component is fixed in a receptacle of the base body. In other words, that means that the insert component is not only located on the outside of the main body, but protrudes into inner regions of the main body. In particular, the receptacle is formed so that there is an undercut, 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.

Furthermore, it is also proposed that the at least one insert component has a stop plate forming the blocking surface, which is spaced from the main body. The insert component accordingly has, for example in the peripheral region of the Gesperrebauteils, a stop plate. The stop plate forms in particular a substantially flat contact surface, which then assumes the function of the blocking surface in the motor vehicle lock. In the variant described here, a distance is provided between the stop plate and the main body. With this distance, for example up to 5 mm, it is ensured that the stop plate does not rest directly on the peripheral area of the main body. This is to enable the subsequent operation of a motor vehicle lock that noise is avoided by the impact of the stop plate on the body in contact with the other locking member, so that a quiet operation of the motor vehicle lock is possible.

In addition, it is considered advantageous that at least partially a damping material is arranged between the at least one base body and the at least one insert component. This particularly relates to the structure described above, in which the stop plates is spaced from the main body. Then, the damping material may be provided between the stopper plate and the peripheral portion of a main body. Of course, the damping material may also be positioned in other areas between the insert member and the base body, such as in the recording area. As damping material, in particular plastics come into consideration. It is particularly preferred that the damping material is a part of the plastic sheath of the Gesperrebauteils. This also leads to a particularly 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 alloying elements in percent by weight 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 proposed that the base body comprises at least two components, 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. It is thus possible to insert the insert component into one of the components, for example, and to realize a fixation of the insert component to the components or the main body by means of the receptacle formed and the joining together of the two components, with an undercut. Again, a particularly simple and inexpensive production can be realized.

According to one embodiment, it is also proposed that the at least one insert component has a stop plate forming the blocking surface, which is arranged to be movable relative to the at least one main body. This movement is preferably damped with a corresponding damping material and extends a maximum of a few millimeters or tenths of a millimeter. However, in this way, however, the contact with the other Gesperrebauteil be carried out noise damped. It is also preferred in particular that only a part of the insert component moves relative to the main body, for example only the stop plate. This can be achieved in particular by forming a spring element between the stop plate and a head of the insert component located in the receptacle.

The invention is very particularly preferably used in a motor vehicle, so that here a motor vehicle having at least one motor vehicle lock with a rotary latch is proposed, which is designed as a ratchet component described here according to the invention.

Fig. 1:

den generellen Aufbau eines Kraftfahrzeugs mit einem Kraftfahrzeugschloss,

Fig. 2:

eine erste teilperspektivische Darstellung einer Ausführungsvariante des Gesperrebauteils,

Fig. 3:

eine Draufsicht auf einen Teil eines Gesperrebauteils mit Einsatzbauteil,

Fig. 4:

das Gesperrebauteil aus Fig. 3 mit einer Kunststoff-Ummantelung, und

Fig. 5:

ein Detail einer weiteren Ausführungsvariante eines Gesperrebauteils mit Einsatzbauteil.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures illustrate a particularly preferred embodiment of the invention, but the invention is not limited thereto. They show schematically:

Fig. 1:

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

Fig. 2:

a first partial perspective view of a variant of the Gesperrebauteils,

3:

a plan view of a part of a ratchet member with insert member,

4:

the Gesperrebauteil off Fig. 3 with a plastic sheath, and

Fig. 5:

a detail of another embodiment of a Gesperrebauteils with insert component.

Fig. 1 serves to illustrate the main field of application of the invention. Shown schematically is a motor vehicle 11 with a door 17. The door 17 has a motor vehicle lock 2. In this motor vehicle lock 2, the rotary latch 12 and the pawl 13 are schematically illustrated, which can be referred to here as each Gesperrebauteil 1. The catch 12 has received a locking pin 14 and is blocked by the pawl 13 movement. At the point where the pawl 13 and rotary latch 12 are in contact with each other, the locking surfaces 3 are formed.

Fig. 2 now shows a possible embodiment of a Gesperrebauteils 1, here a catch. The Gesperrebauteil 1 is formed by one of the rotary latch corresponding base body 4. The main body 4 now has a receptacle 6 for an insert component 5 in the area of the blocking surface 3. The receptacle 6 is in this case formed as a recess in a lateral surface of the base body 4. The main body 4 is here in Fig. 2 illustrated in the region of the main catch 23 and the pre-catch 24, wherein here the locking surface 3 is executed with an insert member 5 only in the region of the main catch 23.

The two-part main body 4 illustrated here is a first component for a two-part rotary latch, so that a correspondingly corresponding component is placed here from above. As a spacer between the two components, the base body 4 are here designed with nubs 22 and a 20 Randerhöhung. The Randerhöhung 20 also has over the scope different and multiple interruptions 21, which are to allow later penetration of damping material.

Fig. 3 shows a main body 4, the out of Fig. 2 is similar. Here, in this plan view, the distance 18 to be maintained preferably between a stop plate 7 of the insert component 5 and the base body 4 itself can be clearly seen. Now, a similar component can be easily placed corresponding thereto and the Gesperrebauteil then be surrounded with a plastic sheath 19, which extends in particular through the interruptions 21 of the Randerhöhung 20 and in the distance 18. The result may be, for example Fig. 4 be removed. Thus, the main body is now substantially surrounded by the plastic casing 19, only the stop plate 7 of the insert member 5 is exposed and thus forms the blocking surface. 3

Fig. 5 shows in a cross section through a finished trained rotary latch 12 in the region of a blocking surface 3. The base body 4 is in this case formed with a first component 9 and a second component 10, between which a cavity for receiving damping material 8 is provided. Between the first component 9 and the second component 10, a receptacle 6 for a head 16 of an insert member 5 is also provided. This is made thickened relative to a web 15 of the insert member 5, so that it is securely held between the first component 9 and the second component 10 (undercut). The web 15 now has such a length that the stop plate 7 protrudes beyond the circumference of the base body 4 with a distance 18. The stop plate 7, which ultimately forms a blocking surface 3 of the rotary latch 12, for example the main catch, can thus be underlaid with the damping material 8. This is to determine a damping effect on contact of the other Gesperrebauteils with the stop plate 7, at the same time a quieter Contacting and thus a low-noise operation of the motor vehicle lock are possible.

LIST OF REFERENCE NUMBERS

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

Claims (8)

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). Locking component (1) according to claim 1, wherein the at least one insert member (5) in a receptacle (6) of the base body (4) is fixed. A ratchet member (1) according to claim 1 or 2, wherein the at least one insert member (5) has a stopper plate (7) forming the blocking surface (3) spaced from the body (4). Locking component (1) according to one of the preceding claims, wherein at least partially a damping material (8) is arranged between the at least one base body (4) and the at least one insert component (5). Locking component (1) according to one of the preceding claims, in which the at least one insertion component (5) is designed with a material which is harder than the at least one basic body (4). A ratchet member (1) according to one of the preceding claims, wherein the base body (4) comprises at least two components (9, 10) between which at least one receptacle (6) for an insert component (5) is provided. A ratchet member (1) according to any one of the preceding claims, wherein the at least one insert member (5) comprises a stopper plate (7) forming the blocking surface (3) which is movably disposed relative to the at least one body member (4). Motor vehicle (11) comprising at least one motor vehicle lock (2) with a rotary latch (12), which is designed as a ratchet member (1) according to one of the preceding claims.

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