EP2932001A2

EP2932001A2 - Method for producing motor vehicle locks with latch surfaces associated with a puzzle part

Info

Publication number: EP2932001A2
Application number: EP13840159.1A
Authority: EP
Inventors: Thorsten Bendel; Werner Pohle; Thomas Waldmann
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2012-12-12
Filing date: 2013-12-11
Publication date: 2015-10-21
Anticipated expiration: 2033-12-11
Also published as: KR20150094748A; US20150315827A1; CN104981576B; RU2015127196A; JP2016503847A; CA2900828A1; EP2932001B1; DE102012024303A1; MX2015007351A; CN104981576A; WO2014090216A2; WO2014090216A3

Abstract

In order to minimize the sliding friction appearing between the pawl (5) and the rotary latch (2) of a motor vehicle door lock (1), it is advantageous, if during the production process, the various catch surfaces (12, 13) of both locking parts (30, 31) are associated with one or also two puzzle components (50, 51), said puzzle components (50, 51) being inserted into the main latch area (49) of the pawl (5) or rotary latch (2), in a secured position in correspondingly adapted puzzle-shaped contours (53, 54). Said edge surfaces (55) and/or (56) can advantageously compensate the effect of the adverse stamped contours (11 or 14) present on the other locking part (30, 31) such that both locking parts (30, 31) are in mutual contact reducing the friction.

Description

DESCRIPTION

Method for producing motor vehicle locks with detent surfaces associated with a puzzle piece

The invention relates to a method for producing the locking parts catch and pawl of a motor vehicle lock, punched out in the rotary latch and pawl perpendicular or approximately vertical edges with corresponding locking surfaces for both locking parts and then provided with free space of the locking surfaces with a sheath. The invention also relates to a motor vehicle lock with a rotary latch and the <catch in the locked state locking pawl, wherein the catch and pawl corresponding locking surfaces on the vertical edges resulting from punching and have a free surface locking the shroud.

It is known to reduce the creaking noise that occurs when driving the motor vehicle, which can occur between the bar arm and the catch, thereby reducing either the bar arm or the catch in the contact area both provided with a surface structure, which contributes to a reduction of sliding friction. In this case, according to DE 10 2010 009 141 A1 on the stirrup leg in the contact region obliquely to the longitudinal axis of the stirrup leg extending grooves or corresponding webs are applied. These should, as mentioned, reduce the known creaking. In addition, inserts are provided in the area of the receptacle of the catch in the contact area between the bar arm and rotary latch, which should still support the effect of provided with the surface structure stirrup leg or even take over its function. In these applications, the surface is also equipped with a surface structure or just. These inserts are relatively small in construction and hold in the intended position

| Confirmation copy | only due to an undercut. In addition, the described grooves and other surface structures are artificially created and do not take into account the circumstances that occur when punching the catch and pawl. The invention is therefore based on the object to simplify the production of low-noise motor vehicle locks or to make it as effective as possible.

According to the method, this object is achieved in that when punching the locking parts are punched in the region of the corresponding locking surfaces contours for Puzziebauteile be used in the puzzle components with a slippery / low-friction and / or rubbing against each other of rotary latch and pawl low-noise edge surfaces. Through the use of separate puzzle components, the possibility is given either the puzzle component to avoid the noise occurring when Aneinandervorbeischieben of catch and pawl avoiding locking surface with, for example, inclined grooves or to realize smoothed edge surfaces. Thus, the multiple possibility of designing the puzzle surface or the contact surface with the adjacent locking part is advantageous, so that different noise-reducing solutions can be realized depending on the cost situation or the desired result. Due to their design and the corresponding jigsaw-shaped contours, the individual puzzle components can be effectively fixed to them after punching out the locking parts, so that they can still perform the necessary tasks even after prolonged operation of a motor vehicle lock.

According to a further expedient embodiment, it is provided that the contours for the puzzle components are produced in the main rest area of the rotary latch. This training allows the size of the puzzle component of the Adjusting the training of the main rest area, so that the size of the puzzle components is adapted to the conditions in the main rest area. You will have to assume that a certain size of the puzzle components and thus the contours is necessary, just to facilitate the assembly and to ensure the exact fit of the puzzle components in the contours.

The versatility of the jigsaw puzzle components used makes it possible to form a latching component having the latching surface of a latching part or several puzzle components receiving the latching surfaces of both latching parts. In particular, it is thus always possible to realize a sufficiently large locking surface so that the desired contact surface can ensure the accurate and uniform operation of the motor vehicle lock. For example, it is conceivable that the puzzle component of the rotary latch has a larger latching surface than the puzzle component of the pawl.

As a rule, it is advantageous from the manufacturing point of view, if the surface of the puzzle component of the catch or the pawl resulting from the punching of the other locking part punching contours is made with grooves compensating, and then preferably has obliquely running grooves or punch marks. The forcings inevitably resulting straight grooves are thus assigned to the locking part, which should not be further processed, while the puzzle component of the other locking part then receives a locking surface, for example, with oblique grooves, so that both locking parts can work beneficial and noise-reducing. The arranged on the two locking parts different grooves can not interlock with each other, are only a few overlaps on each other and thus lead to a low-noise Aufeinander rubbing the two locking parts. In addition to the possibility of using straight and with oblique grooves provided puzzle components is further provided according to the invention, in that a material is used for the puzzle component, which compensates for the effect of the surface structure of the other locking part, preferably the one of the straight grooves, which is produced during punching. Here, therefore, the second locking part not a locking surface with obliquely extending grooves are used, but a locking surface which takes over the task due to the choice of materials to work noise reducing with the straight running grooves of the other locking part.

In addition to the choice of material, it is also possible according to the invention that the latching surface of the puzzle component of the rotary latch or the pawl is hardened or coated. Again, it is expedient to harden or coat only one locking surface of the locking parts, while the other can be used with the existing stamping grooves on. Since that puzzle component yes is a separate component, a separate treatment by curing or coating is not expensive.

According to the device, the object is achieved in that the latching surfaces or at least one locking surface are assigned separately usable puzzle components that are used in position-stamped punched in the punching of the locking puzzle-like contours and their edge surface / locking surface slippery and / or formed when rubbing the locking surfaces of both locking parts with low noise is.

This special design of the catch and / or the pawl so the two locking parts of the motor vehicle lock is the ability to previously trained separately puzzle components before so that they can effectively take over the low-noise part when rubbing the two locking parts. However, it is also advantageous that a position-secured arrangement in the respective locking part is possible by the puzzle-shaped contours and the corresponding puzzle components, whereby a precise fixation is not even required by exact shaping. It is advantageous that not once the entire puzzle component requires a certain low-noise training, but that it is sufficient if the edge surface or the detent surface of the puzzle piece is slippery or here locking surfaces are used, which make the effect of adverse punch marks when moving the two locking parts past each other over ,

It is preferably provided that the puzzle-shaped contours and the puzzle components are formed or arranged in the main rest area of the rotary catch or the pawl. This is again expressed that it is the actual purpose of the present invention to make this main rest area of catch and pawl expiration promoting, d. H. to make noise, which is achieved in that the puzzle-shaped contours and the puzzle components preferably compensate for the effect of the other puzzle piece component.

A particularly expedient embodiment is that in which the detent surface on the puzzle component has an obliquely extending contour and the detent surface on the other obturator part has a straight / vertical groove having a punched contour or is formed inverted with respect to the grooves. This is advantageous because then one of the two locking parts gets along without Puzzlebauteil and can be built and operated with the existing Stanzriefen or punching contours further, while only the second locking part, preferably the catch by a little expensive change their locking surface by trained obliquely Riefen with little effort can ensure that the previously occurred adverse noise can be reduced or no longer occur. The straight running grooves of the punching contour are acted upon by the oblique grooves of the puzzle component or the associated locking surfaces during the movement process of the pawl, that it can only come to a selective contact to a few overlaps, so that the previously occurring interlocking the trained on both locking parts straight Punching contours no longer can occur. With at least two overlaps per groove, a uniform movement of the pawl past the rotary latch, so that even a uniform motion sequence is secured. Instead of a special groove formation on the respective puzzle component according to a development of the invention given the opportunity to let the puzzle component consist of a material that compensates for the effect of the punching contour on the other locking part or ineffective or has a hardened or coated surface. Of course, the effect of the odd grooves having punching contour is compensated by the hardened or coated surface, except that only the respective detent surface is to be formed accordingly during hardening and coating, while after the other possible solution yes, the entire puzzle component consists of a corresponding reibfreudigen material.

The invention is characterized in particular by the fact that a motor vehicle lock is created with a relatively small additional production outlay, in which the pawl and rotary latch are designed in the latching area in the area where they are both adjacent to each other or so that the previous noise load is significantly minimized , In addition, a uniform movement of the pawl is secured to the catch along, because of the special design of the locking surface preferably one of the locking parts, the movement is facilitated, because this separately formed locking surface is associated with a puzzle component that easily and safely in a puzzle-like contour of the Locked parts can be used. The remaining on the other locking part just running punching marks or the corresponding punching contour is then compensated by the appropriately designed locking surface on the puzzle component so that the previous adverse noise can no longer occur or are greatly reduced. Of course, there is also the possibility, both locking parts a corresponding Puzzlebauteil assigned and provided with a particularly suitable locking surface, so that the noise level can be brought to zero.

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

Closed state,

Figure 2 shows the rotary latch and pawl shown in Figure 1 with

Puzzle components in the main rest area,

FIG. 3 shows a puzzle component with artificial grooves,

FIG. 4 shows a puzzle component with a coating

Rest area

FIG. 5 shows a puzzle-shaped contour in the main rest area of the pawl,

FIG. 6 shows an enlarged reproduction of a puzzle component in FIG

Main rearing area of the rotary latch and

Figure 7 is a perspective view of the rotary latch with a special edge formation.

FIG. 1 shows a plan view of a motor vehicle lock 1, in which the rotary latch 2, which moves about the axis 3, securely surrounds the bar arm 9 of the lock bar 7. Here, therefore, the closed state of a motor vehicle lock 1 is shown, wherein the catch 2 is secured by the pawl axis 6 pivotable pawl 5, ie the motor vehicle lock 1 can only be opened again, if previously the pawl 5 is pivoted away, which is not reproduced here Handle the vehicle door is possible. The hanger arm 9 is moved over the receptacle 4 into the deep ground 27 to the catch 2 and thus secures the closed state and the vehicle door, not shown here, wherein the locking members 30, 31, ie the pawl 5 and the Rotary catch 2 parts of the vehicle door are, while the lock bracket 7 are fixed to the hanger arm 9 on the body of the motor vehicle. The locking parts 30, 31 of the locking mechanism 8 are produced in a preferably multi-part stamping process from corresponding sheets, wherein the surface is characterized by a punched contour 14 at the latching surfaces 12, 13 kept free of the casing 10 initially at both locking parts 30, 31. However, this surface formation is changed in the area of the latching surface 13 by the fact that here the latching surface 13 is associated with a separate component, which will be explained further below. The punching contour 1 1 on the locking member 30 is therefore a different, as the punching contour 1 1 on the locking member 31. The corresponding grooves 18, 19 extend obliquely and the grooves 17, ie the straight punched grooves, lead to a much more favorable sliding friction between the Locked parts 30, 31 so between the pawl 5 and the catch 2, so it can not come here to the unfavorable noise nuisance. It is not particularly emphasized that the edges 15, 16 of the rotary latch 2 and the pawl 5 are provided with a plastic sheath 10. The edges 15, 16 are thus covered by such a sheath 10. Only in the region of the latching surfaces 12, 13 and also the contact surface 20 between the rotary latch 2 and stirrup leg 9, this sheath 10 is not present, so that there special surface structure, as can be seen from the following figures, can be effective. The surface structure ensures a noise minimization and a sliding friction minimization, whereby both also work together. The locking surfaces 12, 1 3 are in the region of the main catch 22. Their special training results from the following figures.

First of all, it is shown in FIG. 2 that puzzle-shaped contours 53, 54 are formed in the catch 2 and the pawl 5 in the region of the main catch, in which adjusted puzzle components 50, 51 are secured in position. These puzzle components 50, 51 carry the specially designed locking surfaces 12, 13 shown in the following figures on their edge surfaces 55, 56. The correspondingly formed edge surface 55 is formed on the opposite region 37 of the puzzle component 50, wherein in Figure 2, a solution is shown in which two puzzle components 50, 51 of the catch 2 and the pawl 5 are assigned. As a rule, you will get along with the puzzle component 50 and the edge surface 55, then in the catch 2, the puzzle-shaped contour 53 has been previously produced during punching.

FIG. 3 shows a puzzle component 50 whose edge surface 55 has obliquely extending grooves 18, 19. These work friction against each other when driving together of the catch 2 and pawl 5, because the locking surface 13 of the pawl 5 with the straight grooves 17 with the oblique grooves 18, 19 of the edge surface 55 only a few overlaps 25, 25 ^' provide, if said as the two locking parts 30, 31 are moved past each other. Instead of the groove formation, FIG. 4 shows an edge surface 55 or also 56 of a puzzle component 50, 51 in which a hard coating is applied or a smooth surface ensures that the grooves 17 or 18, 19 on the lock member 30 or 31 in the main rest region 49 are rendered ineffective become. FIG. 5 shows a puzzle-shaped contour 54 in the main rest area 49, ie in the pawl 5. In this puzzle-shaped contour 54, the puzzle component 51 shown in FIG. 2 is secured, whereby expediently only this puzzle component 51 is provided with an edge surface 56, as they are for the other locking member 31 of Figure 3 and Figure 4 can be seen.

While the main detent region 49 of the detent pawl 5 is shown in FIG. 5, the main detent region 49 of the rotary detent 2 is reproduced in FIG. It can be seen that here, too, a puzzle-shaped contour 53 was produced during the punching of the rotary latch 2, into which the puzzle component 50 is then inserted or inserted has been. The edge surface 55 is then given a texture as shown in Figures 3 and 4, respectively, or as explained in the specification.

Figure 7 shows a perspective view of the rotary latch 2, which is pivotable about the axis 3, not shown here. When pivoting this catch 2 of the bar arm 9, which is not shown in Figure 7 is inserted into the receptacle 4 and later then released again, so that the vehicle door can then be opened or just closes. In the closed position, the rotary latch 2 is locked by the pawl 5. It can be seen in FIG. 7 that the punching of the rotary catch 2 produces a clearly recognizable edge 5, the surface of which, as explained further above, is characterized by the punching contour 14, in particular on the latching surface 12. This punching contour 14 is only indicated in FIG. The locking surface 12 indicates the main catch 22, d. H. Thus, the position in which the pawl 5 prevents the catch 2 in the closed position at a pivoting back. Then, as already mentioned, the locking surface 13 of the pawl 5 on the locking surface 12 of the catch 2 and both can move with reduced friction to each other, without causing the adverse noise, because the straight grooves 17 of the catch 2 and the oblique Asked grooves 18, 19 of the pawl 5 can not interlock or lock into one another. The straight grooves and the pawl and the oblique grooves 18, 19 of the catch 2 can be assigned.

In the area of the main catch 22, 49, a puzzle component 50 can be seen whose edge surface 55 corresponds, for example, to the latching surface 12 with the straight grooves 17. This edge surface 55 should correspond to the edge surface 56 of the pawl 5 so that the existing grooves 17, 18, 19 do not interlock or latch into each other.

In the bottom 27 of the receptacle 4 it can be seen that a surface deviating from the remaining surface of the edge 15 is present here, which is achieved, in particular, by the fact that no casing 10 is present here is. It can be seen that here also a separate part is inserted to positively influence the sliding action of the rotary latch 2 on the stirrup leg 9.

All mentioned features, including the drawings to be taken alone, are considered to be essential to the invention alone and in combination.

Claims

PATENT CLAIMS 1. Method for producing the locking parts of the rotary latch and pawl of a motor vehicle lock, wherein the rotary latch and pawl are punched perpendicular or approximately vertical edges with corresponding latching surfaces for both locking parts and then provided with a sheathing while keeping the latching surfaces free,

characterized,

that when punching the locking parts in the area of the corresponding

Rastflächen contours are punched out for puzzle components in the

Puzzle components with a slippery / low friction and / or at

Rubbing together of rotary latch and pawl low noise

Edge surfaces are used secured position.

2. The method according to claim 1,

characterized,

that the contours for the puzzle components in the main rest area of the rotary latch are made.

3. The method according to claim 1,

characterized by

that a puzzle component, the locking surface of a locking part comprising or more puzzle components, the locking surfaces of both locking parts are formed receiving.

4. The method according to claim 1,

characterized by

that the surface of the puzzle component of the rotary latch or the pawl, the stamping contours resulting from the stamping of the other locking part with grooves is made balancing, and then preferably has oblique grooves or punch marks.

5. The method according to claim 1,

characterized,

that a material is used for the puzzle component, the effect of the resulting during punching surface structure of the other locking part

preferably that of the straight grooves is adjusted balancing.

6. The method according to claim 5 or claim 6,

characterized hnet,

that the latching surface of the puzzle component of the rotary latch or pawl is hardened or coated.

7. Motor vehicle lock with rotary latch (2) and the catch (2) in

Locking state arresting pawl (5), wherein rotary latch (2) and pawl (5) corresponding latching surfaces (12, 13) on the vertical edges (15, 16) resulting from punching and a sheathing (10) leaving the latching surfaces (12, 13) free exhibit,

characterized,

in that the latching surfaces (12, 13) or at least one latching surface (12) are assigned separately usable puzzle components (50, 51) which are jigsaw-shaped contours (53, 54) punched out in the punching of the latching parts (30, 31).

are positionally secured einzubär and their edge surface (55, 56) / latching surface (12, 13) slippery and / or when driving together the locking surfaces (12, 13) of both locking parts (30, 31) is designed to act low noise.

8. motor vehicle lock according to claim 7,

characterized,

in that the puzzle-shaped contours (53, 54) and the puzzle components (50, 51) are formed or arranged in the main rest area (49) of the rotary latch (2) or the pawl (5).

9. Motor vehicle lock according to claim 7,

dad u rc h mark,

in that the latching surface (13) on the puzzle component (50) has a contour (53) having oblique grooves (18, 19) and the latching surface (12) on the other latching part (30) has a punching contour (14th) having straight / vertical grooves (17) ) or inversely with respect to the grooves (17-19). 0. Motor vehicle lock according to one of the preceding claims, characterized in that

in that the puzzle component (50) is made of a material which compensates for the effect of the punching contour (14) on the other locking part (30) or makes it ineffective or has a hardened or coated surface.