WO2011103847A2

WO2011103847A2 - Motor vehicle lock having a low-noise lock bow

Info

Publication number: WO2011103847A2
Application number: PCT/DE2011/000012
Authority: WO
Inventors: Thorsten Bendel; Klaus GÖTZEN
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2010-02-24
Filing date: 2011-01-08
Publication date: 2011-09-01
Also published as: WO2011103847A3; DE102010009141A1; CN103109027A; CN103109027B

Abstract

A low-noise embodiment of a motor vehicle lock, which optimally transmits the forces that occur when driving a motor vehicle, is provided with a lock bow (8) having a specially designed bow leg (4). The outer wall (17) of the bow leg (4) has a surface structure (16), particularly in the contact area (15), consisting of grooves (19, 20) running obliquely to the longitudinal axis (22) or of corresponding webs (21). In addition to a special design of the grooves (19, 20) and the webs (21) on the outer wall (17) of the bow leg (4), it is thus possible to provide the rotary catch (11) in the receiving section (12) with such a surface structure (16) or similar in order to be able to transmit optimal pressure loads or other loads and in order to significantly minimize noise that may occur in this area when the vehicle is in motion.

Description

DESCRIPTION

Motor vehicle lock with low-noise lock handle

The invention relates to a motor vehicle lock with a lock bracket with recess, stirrup leg and Bügelsteg exhibiting lock holder and a rotary latch with receptacle for the stirrup leg and a pawl exhibiting locking mechanism, which comes into contact with the catch stirrup leg is provided in the contact area with a separate surface structure having outer wall ,

Motor vehicle locks with lock holders and rotary latch are basically known, the lock holders are often designed wire-shaped and fixed to a base plate. Similarly, lock holders are known, which are formed from a metal sheet, for example by portions of the sheet

be punched out or bent. In a technical design must be taken into account that the lock holder can really absorb the absorbed forces for securely closing the vehicle door. In motor vehicle locks in the automotive industry usually a locking mechanism catch and pawl is used to the body side fixed

Lock lock holder. Thus, the motor vehicle lock is usually attached to a motor vehicle door, a tailgate or other movable body part. In the closed state of such

Motor vehicle lock attacks the catch with her arm to the

in particular bow-shaped lock holder. In this case, the catch pulls the lock holder, for example, against the force of a door seal in the motor vehicle lock and is then blocked even by means of the pawl so that accidental opening is excluded. During operation of a motor vehicle may cause shocks and / or torsions occur of body parts, which may possibly also lead to increased stress on the contact area between the catch and hanger arms.

In particular, it is possible that between rotary latch and hanger arms

Relative movements occur to a lesser extent. It should be noted that frictional forces and / or compressive stresses can occur in the contact area between the rotary latch and hanger arms. So it can come to sounds, which are also known as creaking. Such noises and also the charges responsible for it are disadvantageous. The invention is therefore based on the object to further develop a motor vehicle lock and especially its lock holder so that it by improved and selectively shaped surface structures to a

Noise minimization and a load balance in the contact area between the bracket leg and rotary latch comes.

The object is achieved in that the outer wall of the stirrup leg has a surface structure, the grooves or webs are designed to deviate from the longitudinal axis of the stirrup leg. In such an embodiment of the grooves and / or webs, it comes more to selective contact between the surface structure of the

Stirrup leg and the catch, in particular their inclusion. Due to this, a further minimization of the noise and the pressure load is achieved, quite apart from that in such a

Surface structure also seen over the total area variations in editing are easier to make.

According to an advantageous embodiment of the invention it is provided that the grooves and / or webs resulting in a zero thread in the outer wall

are formed. A zero thread means nothing else than that the grooves or webs are perpendicular to the longitudinal axis and thereby preferably around the entire hanger arm, which is even closer and closer is explained in addition. Such a zero thread can be introduced in a simple and convenient manner, or better said, the distances of the individual threads may be the same or different, depending on how the load of the individual areas of the

Wants to accommodate the thighs.

According to a further expedient embodiment of the invention, it is provided that the grooves and / or webs are formed by cording a cross-knurl resulting. In such a cross knurl, the grooves and / or webs run against each other, but in turn deviating from the longitudinal axis, ie at a certain angle thereto. The cross knurls lead to the formation of protruding pins that are best suited to occurring

To absorb or compensate for burdens while avoiding the known creaking noises.

Another possibility of forming the surface structure is that in which the grooves and / or webs are introduced into the outer wall resulting in a diagonal knurl. Here, in particular, the grooves are introduced just obliquely without further grooves are introduced at right angles to it as in the cross-knurls. It is particularly advantageous that a favorable distribution of impinging forces is possible here as well, above all because the rotary latch and the associated stirrup leg always have only a contact area of small area, which of course can change in the short term. In particular, in the training with the cross knurls is the

Possibility to give a tip to the corresponding pins. Accordingly, the invention provides that the grooves pyramid tips are formed forming in the outer wall. The corresponding contact surfaces or contact areas are really only punctual, whereby the stress of the pyramid tips can be avoided by choosing the appropriate material. In conventional grooves these are roof-shaped, especially in the contact area. For files and similar editing tools will like one

Rasp surface used. The invention now provides that such is also used here in the motor vehicle locks, it being provided that the surface structure is introduced in the form of a rasp surface in the outer wall. This results in more or less sharp or sharp-edged studs, which depending on the processing of these sharp edges can also be defused, so as a uniform load in the contact area

sure.

Regardless of the particular shape of the grooves and / or webs, it is advantageous if they are all around the entire outer wall of the

Bar ends covering surface structure are formed resulting. In general, this is easier, whether by punching or similar

Operations the corresponding grooves and / or webs are formed.

It is advantageous that then over the entire path of movement of the catch and, no matter where the contact areas are, always the desired load balance and noise minimization are secured. In the manufacture of the motor vehicle lock is u. a. the recess between the stirrup legs and the hoop web made by punching. Either in this process or by a separate

Operation, it is advantageous if the grooves and / or webs are made by punching, preferably when punching the recess of the lock bracket. The stamping is also advantageous because the depth and also the spacing of the grooves and / or webs can be optimally maintained, so that exactly the surface structure is achieved, which is provided according to the order. A further compensation of the applied forces or the loads is possible if the grooves over steel wheels corrugated groove walls resulting in knurled in the outer wall or formed a total of undulating are. The waves usually run perpendicular to the bottom of the grooves, but it is also quite conceivable that the groove walls are inclined and then have the corrugated design, thereby overloading of surface areas of the stirrup leg is reliably prevented.

Earlier it has been explained that when the catch comes in contact with the associated stirrup leg. For this reason, the outer wall of the stirrup leg is provided with a surface structure according to the previous claims. It is also conceivable, however, that the surface of the receptacle in the rotary latch is equipped with a contact region having grooves and / or webs. It can, especially in a metallic surface of the recording, this surface structure in

Contact area in exactly the same way as in the previous one

Claims for the hanger arm can be realized. It is advantageous to a certain extent that, with a corresponding "processing" of the receptacle, the outlay for this processing is relatively small., On the other hand, it is more difficult to balance or equalize the load in such a design, simply because less of the surface will generally be available.

To the desired effectiveness of the appropriate

To ensure surface structures, the invention provides that the depth of the grooves or the height of the webs 0.08 - 0.2 mm, preferably + 0.1 mm, more preferably 0.12 mm, while the distance at + 0 5 mm, preferably 0.6-0.9 mm. In such a shape of the

Surface structure arise contact areas that can fill the described task particularly well because without overloading this

Contact areas is to be feared whose effectiveness is certain. This information makes it clear that work is not carried out with great depths, but rather with a process that is defined by a specific roughening of these areas. But an advantage of this design is in particular that is ensured by the dimensions of the grooves and webs described that no matter Impact angle of the catch on the stirrup leg and their end contact always the desired noise minimization and optimal pressure distribution can be done. Also, the grooves and webs introduced into the rotary latch should have the described dimension, wherein there is the advantageous possibility, which is described in the following claim, especially in the formation of the surface structure on the rotary latch area.

After an expedient embodiment of the training of

Contact area in the area of the rotary latch is provided that a

Surface structure, preferably in the field of receiving the catch in the form of lotus surfaces or electrical discharge surfaces or the addition of base or topcoat for coating or sheathing is given. In general, in the described embodiment of the stirrup leg or else the receptacle, the plastic sheath is removed in the region of the receptacle. However, according to the embodiment just described, it is also conceivable to modify or equip this casing itself in such a way that its surface or itself has a specific surface structure overall or a corresponding property. With the help of such training the inclusion of the catch, it is as described also possible to achieve the desired load distribution and especially appropriate unpleasant

To prevent noise.

The invention is characterized in particular by the fact that a

Motor vehicle lock is provided, in which either the lock bracket or one of the hanger arms or the catch in the region of the receptacle are formed so that thus the desired load compensation is possible and in particular the noise pollution can be significantly minimized. The necessary surface structure is designed in different ways, wherein it expediently pretends a non-planar contact surface or a corresponding contact area, so it accordingly also not to overload the corresponding grooves and the like

Surface structure executions can give. In addition to the relative low additional costs for the introduction of the surface structure is just above all of great advantage that with an optimal load on the individual areas of the motor vehicle lock, the adverse noise pollution can be significantly reduced.

Further details and advantages of the subject invention will become apparent from the following description of the accompanying drawings in which a preferred embodiment with the necessary details and individual parts is shown. Show it:

Figure 1 is a plan view of a motor vehicle lock in open

Status,

FIG. 2 shows an enlarged representation of the lock strap with a special surface structure,

3 shows a section through the stirrup leg to illustrate the applied zero thread,

Figure 4 is an enlarged view of the of the catch

recorded stirrup leg with the respective

Contact areas,

Figure 5 is a side view of the lock strap with another

Execution of the surface structure on the stirrup leg, Figure 6 shows a further embodiment of the surface structure of

Bar arm,

Figure 7 shows a section through the hanger arm with a special

Formation of the surface structure,

Figure 8 is a side view of the lock bracket with wavy grooves as

Surface structure and

Figure 9 is an enlarged view with a wavy formation of the groove walls.

Figure 1 shows a motor vehicle lock 1, which is installed in a car body 2. Recognizable is the lock holder 3 and the lock bracket 8 with the two stirrup legs 4, 6 and the stirrup web 5 and the recess 7 formed therebetween. Corresponding figure clearly shows FIG. 2.

In addition to the lock holder 3, a locking mechanism 10 is shown, which consists mainly of the rotary latch 11 with the receptacle 12 and the pawl 13. In the example shown, the pawl 13 has fallen in, so that the catch 11 can not leave the position shown. In this position it may be too

Stress due to the different movements of the two parts

Lock holder 3 and locking mechanism 10 come, so that in the contact area 15 corresponding loads and especially unpleasant noises can occur.

FIG. 2 shows that the contact region 15 has a special design or processing in order to create a special surface structure 16. The entire outer wall 17 of the loaded stirrup leg 4 is provided with grooves 19, 20 and webs 21 which extend at right angles to the longitudinal axis 22 of the stirrup leg 4. These grooves 19, 20 form a so-called zero thread 24. The individual "passages" or grooves 19, 20 of the zero thread 24 have a distance 35 which is greater than 0.5 mm, preferably 0.6 - 0.9 mm. The lock bracket 8 is on the bottom plate 18 or is part of the bottom plate 18, so that an overall stable component is created.

FIG. 3 shows a section through the stirrup leg 4, wherein it is clear that the individual grooves 19, 20 of the zero thread 24 run parallel to each other and in each case perpendicular to the longitudinal axis 22. Its depth is denoted by 34, it being provided that the grooves or webs should have 0.08 - 0.2 mm, preferably + 0.1 mm, preferably 0.12 mm. This shows that the introduced or applied grooves 19, 20 or webs 21 can be applied with relatively little effort as a surface structure 16 on the respective stirrup leg 4. FIG. 4 also shows that the shackle leg 4 is the one shown in FIG. 2, that is, the one with the zero thread 24. In the contact region 15 or 32, it is indicated that here the rotary catch 11 or the receptacle 12 can have an insert which effects the effect of the surface structure 16

5 provided ironing leg 4 should still support or even take over its function. In the insert shown in Figure 4, the surface 31 is also equipped with a surface structure or even just. In this case, as can be seen in Figure 2, the sheath 14 has been removed in this area.

In addition to this training, it is also possible, the actual

10 sheathing 14 by adding a base or topcoat with a coating to provide or form a total that even this actual

Sheath 14 takes over the task of surface structure education special kind. It can be seen that the specially formed stirrup leg 4 fits exactly into the receptacle 12 and just in the said contact area

15 15, 32 comes so close to the plant that loads are transferred.

In Figure 5, a special surface structure 16 is formed in the form of a cross-knurling 25. In the embodiment shown here, this cross-knurl 24 is provided around the stirrup leg 4, with a kind of pins 20 33 arise, here a flat or plane Have surface. According to FIG. 7, however, these pins 33 can also have the shape of pyramid tips 27 in order to achieve punctiform loading. When grooves and the roof-shaped training is possible.

FIG. 6 shows an embodiment in which the surface structure 16 is the shape

, of diagonal knurls 26, d. H. Here, the individual knurls or grooves 19, 20 obliquely to the longitudinal axis 22 and also obliquely to the bottom plate 18. It is understood that these diagonal knurls 26 can be arranged obliquely extending from right to left, in any case, the desired

30 adapted surface structure 16 to give. Figure 8 shows different from the other embodiments in the direction of the longitudinal axis 22 extending grooves 19 ', 20'. In this embodiment, it must be noted that these corrugated grooves 19 ', 20' also according to Figure 6, Figure 5 or Figure 2 in a different direction in relation to the longitudinal axis 22 extending trained and can be arranged. The shape of these shafts 23 may also have different intensity and shape, as indicated in FIG. 8, ie the shafts 23 may be arranged in a shorter sequence or they may run in a sinusoidal curve or may be provided with tips, as indicated by reference numeral 36.

Finally, FIG. 9 clarifies that the groove wall 29, 30 as such may also have a wave shape if this proves to be expedient. In this case, the groove walls 29, 30 can stand vertically standing on the groove deepest 37 or obliquely.

All the above features, including the drawings alone

taken, are considered alone and in combination as essential to the invention.

Claims

1. Motor vehicle lock with a lock bracket (8) with recess (7), stirrup leg (4, 6) and bar web (5) exhibiting lock holder (3) and a rotary latch (11) with receptacle (12) for the stirrup leg (4) and a

Pawl (13) exhibiting locking mechanism (10), wherein the with the rotary latch (11) coming into contact between stirrup leg (4) in the contact area (15) with a separate surface structure (16) having outer wall (17), characterized

in that the outer wall (17) of the stirrup leg (4) has a surface structure (16) whose grooves (19, 20) or webs (21) deviate from the longitudinal axis (22) of the stirrup leg (4).

2. motor vehicle lock according to claim 1,

characterized,

in that the grooves (19, 20) and / or webs (21) have a zero thread (24) resulting in the outer wall (17).

3. motor vehicle lock according to claim 1,

characterized,

that the grooves (19, 20) and / or webs (21) are formed by cording a cross-knurling (25) resulting.

4. motor vehicle lock according to claim 1,

characterized,

in that the grooves (19, 20) and / or webs (21) are introduced into the outer wall (17) in the form of a diagonal knurl (26).

5. motor vehicle lock according to claim 1,

characterized,

that the grooves (19, 20) Pyramidenspitzen (27) forming in the outer wall (17) are introduced.

6. motor vehicle lock according to claim 1,

characterized,

that the surface structure (16) in the form of a rasp surface in the

Outside wall (7) is introduced.

7. motor vehicle lock according to claim 1,

characterized,

in that the grooves (19, 20) and / or webs (21) are designed to produce a surface structure (16) covering the entire outer wall (17) of the stirrup leg (4).

8. motor vehicle lock according to claim 1,

characterized,

in that the grooves (19, 20) and / or webs (21) are produced by punching, preferably during punching of the recess (7) of the lock bracket (8).

9. motor vehicle lock according to claim 1,

characterized,

that the grooves (9, 20) are knurled corrugated groove walls (29, 30) resulting in steel in the outer wall (17) or are formed as a whole wave-shaped.

10. motor vehicle lock according to claim 1,

characterized,

the surface (31) of the receptacle (12) in the rotary catch (11) is equipped with a contact region (32) having grooves (19, 20) and / or webs (21).

11. Motor vehicle lock according to one of the preceding claims, characterized in that

that the depth (34) of the grooves (19, 20) or the height of the webs (21) is 0.08 - 0.2 mm, preferably + 0.1 mm, particularly preferably 0.12 mm, while the distance ( 35) is + 0.5 mm, preferably 0.6-0.9 mm.

12. motor vehicle lock according to one of the preceding claims, characterized

that a surface structure (16), preferably in the region of the receptacle (12) of the rotary latch (11) in the form of lotus surfaces or electrical discharge

Surfaces or over the addition of base or topcoat for coating or sheathing (14) is specified.