WO2020099961A1

WO2020099961A1 - Motor vehicle lock

Info

Publication number: WO2020099961A1
Application number: PCT/IB2019/058985
Authority: WO
Inventors: Yuhui Liu
Original assignee: Kiekert Ag
Priority date: 2018-11-15
Filing date: 2019-10-22
Publication date: 2020-05-22
Also published as: CN111188543A

Abstract

The invention relates to a motor vehicle lock (1) comprising a locking mechanism (11) that consists of a rotary latch (14) and at least one pawl (15), wherein the rotary latch (14) can be fixed in a detent position, in particular a preliminary detent position and a main detent position, by means of the pawl (15), and wherein the pawl (15) co-operates, in at least a final stop position, with a damping element (19), said damping element (19) being located directly on the pawl (15).

Description

Motor vehicle lock

description

The invention relates to a motor vehicle lock aufwei send a locking mechanism from a rotary latch and at least egg ner pawl, the rotary latch by means of the locking pawl in a locking position, in particular a pre-locking position and a main locking position, can be fixed and the locking pawl cooperates in at least one end position with a damping element . Comfort is playing an increasingly important role in today's motor vehicles. On the one hand, user-friendliness plays a major role in the feeling of comfort and, on the other hand, the noise behavior when operating the motor vehicle can significantly influence the feeling of comfort.

It is therefore an endeavor of the motor vehicle industry to support the increased comfort with an underlining operating sound. In particular, the closing noise can increase the value and the feeling of security if the closing noise corresponds to the vehicle type. Closing noises occur when moving components in the motor vehicle engage and / or reach a predeterminable position.

The disengagement of components can also lead to noise, especially if the components are under tension during the intervention. So during a closing movement of a motor vehicle lock It locks a locking mechanism in the locking system against the pressure of a door seal, for example, whereby a pawl interacts with a rotary latch and the pawl holds the rotary latch in the locked position. If the locking mechanism is now opened, there is an abrupt releasing of the locking mechanism due to the prestressing of the seal, which on the one hand generates noise and on the other hand the locking mechanism parts are greatly accelerated.

Various solutions have become known for minimizing the noise behavior of a locking system.

From DE 10 2010 003 483 A1 a locking system with a pre-locking position and a main locking position has become known, in which the interlocking locking components are made of different materials. Thus, metallic components come into contact with components that are made of plastic, for example, and / or have a plastic coating. A plastic coating enables noise reduction so that a metallic click can be prevented.

To minimize noise, it has become known from DE 10 2010 003 500 Al to hen the interlocking Ge locking parts or the components in engagement with the locking mechanism with a plastic jacket. For reasons of stability, the locking mechanism and a blocking lever consist essentially of metal. The metal parts are at least partially covered with plastic covered to minimize opening and closing noises and frictional forces. It is preferred that in the case of a preliminary catch _S pawl a sleeve made of plastic separates the axis for the preliminary catch _S pawl from a metallic area of the preliminary catch _S pawl. This minimizes noise and frictional forces without having to accept other significant disadvantages. Ge reaches a blocking lever by means of the actuation by a release lever in a release position, a noise is associated with the impact of the release position. In order to minimize the noise generated when it occurs, the stop consists of a metallic bolt which is encased with a rubber ring.

The solutions known from the prior art cannot consistently convince. In particular, the solutions are specific constructive solutions, some of which are tied to the constructive specifications. In addition, a large number of recordings and structural parts are necessary to optimize the noise behavior. This is where the invention comes in.

The object of the invention is to provide an improved power tool lock. In particular, it is an object of the invention to provide an optimized noise behavior of a locking mechanism with a minimal number of components. In addition, it is an object to provide a structurally simple and inexpensive motor vehicle lock. The object is achieved by the features of the independent claim 1. Advantageous embodiments of the invention are specified in the subclaims. It is pointed out that the exemplary embodiments described below are not restrictive, rather any possible variations of the features described in the description and the subclaims are possible.

According to claim 1, the object of the invention is achieved in that a motor vehicle lock is provided having a locking mechanism comprising a rotary latch and at least one pawl, the rotary latch being able to be fixed in a latching position, in particular a pre-latching position and a main latching position, by means of the latch and the pawl cooperates in at least one end position with a damping element, the damping element being arranged directly on the pawl. Due to the inventive design of the motor vehicle lock with a damping element arranged on the pawl, it is now possible to create an optimized noise behavior with a minimized number of components.

On the one hand, the damping element can dampen a stop and, on the other hand, the inclusion of the damping element on the pawl has a direct noise-reducing effect in the pawl itself. Structure-borne noise in the pawl is directly reduced by the damping element located on the locking pawl or can be completely eliminated be. In addition, with the least possible number of components a damped movement of the pawl can be achieved.

Is spoken in the sense of the invention of a motor vehicle lock, this includes all automotive locksmiths or locking systems that are used in the motor vehicle. These locking systems can be used for example in flaps, sliding doors, side doors, hoods and / or tailgates as well as in covers. Wherever a moving component has to be held in a secured position when using the vehicle.

The motor vehicle locksmiths according to the invention have a locking mechanism consisting of a rotary latch and at least one pawl. The pawl interacts with the rotary latch, wherein the pawl can latch, ie hold, the rotary latch in a pre-latching position and / or a main latching position. Locks with one pawl or two pawls are conceivable. The locking mechanism interacts with a lock holder. Since the lock holder can be attached to the motor vehicle body or else to the moving component. If the locking system is, for example, a locking system for a folding rear seat bench, the locking system can be accommodated in the movable bench or, for example, in the body. Both solutions have a locking mechanism which engages in the lock holder by means of the rotary latch, the rotary latch being pivoted by the lock holder and the pawl being engaged with the rotary latch, for example on account of a spring preload. _V can reach Getting Connected. Depending on the area of application, systems with a pre-locking position and a main locking position or exclusively with a main locking position are used and included.

In an embodiment variant of the invention, the damping element interacts with another component, in particular a moving component, of the motor vehicle lock. There is an interaction between the damping element and another component if, for example, the pawl or the damper element located on the pawl is operatively connected to a release lever. By means of a release lever, the pawl can be moved out of the engagement area with the catch. That is, the pawl is in a locking position with the rotary latch in engagement, so the pawl can be released from engagement with the rotary latch by means of the release lever and unlock the locking mechanism.

If the release lever now has a contact surface for the damping element, the opening noise and the braking of the accelerated pawl can be reduced by a dampened impact of the pawl on the release lever. In addition, the damping element can also strike against a further lever arranged in the motor vehicle, so that no further damping part can be arranged in the motor vehicle lock in order to achieve a gentle braking of the pawl movement. If the damping element can be guided in an opening of the housing of the motor vehicle lock, there is a further advantageous embodiment of the invention. The pawl and the rotary latch are preferably arranged in one plane of the motor vehicle lock. The locking parts, i.e. the catch and pawl, are usually mounted on a metal axis on a lock case and perform a pivoting movement of the lock case. If the lock housing is now connected to the lock case, for example an axis of the catch and / or the pawl extends through the lock housing so that further components of the motor vehicle lock, such as a release lever, a locking lever or a child lock on the axis of the Pawl and / or rotary latch is storable.

Advantageously, the housing may have an opening which cooperates with a damping element mounted on the pawl. The opening can be designed such that on the one hand a free guiding of the damping element can be guaranteed and on the other hand guide areas and / or stops can be provided through the opening. The damping element is arranged on the pivotable pawl so that circular movements are performed. Preferably, the opening in the lock housing also forms a circular section-shaped opening. If the damping element is designed as a roller damper, the damper can also roll along the opening and during the pivotal movement of the pawl. Of course it is too it is conceivable that the lock housing rests on the lock case and the pawl acts with a damping element in the lock case mounted in the direction of the lock case.

In one embodiment of the invention, stops for the damping element can be formed by means of the housing. The damping element extends from the pawl arranged pivotably in the lock in a region of an opening formed by the lock housing, thereby moving the damping element in the opening. Advantageously, at least one stop for the pawl can result through the opening, that is to say through the lock housing. This means that the damping element, in interaction with the lock housing, limits the movement of the pawl. As a result, a space-saving and thus small-sized embodiment of a motor vehicle lock can be provided. In particular, no other components are required to limit the movement of the pawl. In addition, it is also conceivable that the damping element cooperates with walls formed on the housing and / or he elevations to dampen and / or limit the movement of the pawl.

An advantageous embodiment variant is obtained when the damping element can be attached to the pawl as a separate component. The pawl is preferably be made of a metallic material and in particular from a steel. It can have a Art _S toffüberzug the pawl, wherein preferably, the The area of engagement between the pawl and the catch is made of bare metal in order to achieve a permanently stable interaction between the pawl and the catch. The damping element can preferably be mounted as a separate damping element on the pawl. The pawl can, for example, have a mounting axis on which the damping element can be mounted. In particular in one embodiment of the damping element as a roller damper, the inclusion of the damping element on an axis mounted on the pawl is advantageous. In addition, other components of the motor vehicle can be installed on the axle, such as a release lever. A cylindrical extension or an axis on the pawl can therefore perform several functions. On the one hand, the axle mounted on the pawl serves to position the damping element and at the same time to accommodate and / or store a further functional unit of the motor vehicle lock. However, it is also conceivable that the damping element can be manufactured separately and can be connected to the pawl in a material-locking, form-fitting and / or non-positive manner.

If the damping element can be fastened to a cylindrical extension of the pawl, the pawl being actuatable by means of the cylindrical extension, there is a further embodiment of the invention. The formation of a cylindrical exten tion on the pawl and in particular a right-angled lig aligned on a pivot plane of the pawl cylindrical extension forms the advantage that Pawl can be operated across the cylindrical extension. In particular, a release lever can engage the cylindrical extension and thus enable unlocking of the locking mechanism. In addition, an emergency actuation device can also act on the cylindrical extension, for example, which enables the locking mechanism to be opened, in particular in the case of electrical locks, if the conventional opening mechanism for locking the locking mechanism fails. By means of the cylindrical extension, an emergency actuating element can thus enable the pawl to move and thus unlock the lock.

If the damping element can be formed in a ring shape, preferably as a plastic ring and even more preferably as a rubber-elastic ring, this results in a further embodiment of the invention. The formation of an annular damping element offers the advantage that the pawl can be continuously guided, for example, along the housing or along an opening in the housing or along another component, such as a lever in the motor vehicle lock. The ring-shaped damper can be rotatably mounted on the pawl, so that on the one hand guiding and on the other hand rolling of the damping element is possible.

The execution of a symmetrical, ring-shaped damping element, for example on an axis, also has the advantage that incorrect assembly can be prevented. Due to the continuously changing inputs Grip areas between the damping element and the guide, on impact or rolling level, different areas of the damper come into contact with the motor vehicle lock, thereby supporting the longevity of the damping element.

In an advantageous manner, the damping element cooperates with the release lever in an embodiment. The release lever acts preferably on the pawl and disengages the pawl from the catch. The release lever can be designed such that the release lever can on the one hand bring the pawl out of engagement with the catch and on the other hand provides a guide level and / or a stop for the ratchet damper or the ratchet damper. In particular, a recess in the release lever can correspond to an opening in the lock housing, so that joint guiding and / or striking by means of the release lever and / or the lock housing can be realized. In this example, the damping element interacts alternately and / or continuously with the release lever and the lock housing.

The damping element can advantageously be arranged at a radial end of the pawl. The assembly of the damping element at a radial end of the pawl, that is, one of the pawl axis of the pawl opposite end of the pawl, has the advantage that the greatest possible leverage is available to a noise from the interplay between the catch and pawl to reduce. In particular This can be used to optimize the noise behavior of the locking mechanism and thus the lock. This results from the demolition, that is, the sliding apart of the catch from the engagement area of the pawl, a sudden popping noise, which is arranged by means of a damping element attached to the pawl and advantageously a damping element arranged on a radial end of the pawl with favorable lever ratios and engagement conditions can be reduced or eliminated. In this case, for example, an abrupt tearing off of the engagement conditions can be prevented by the fact that at the time the pawl and rotary latch disengage, the damping element bears against a guide contour of the housing and / or the release lever. Sudden sliding apart can thus be slowed down and the noise can be reduced or eliminated.

The invention will be explained in more detail with reference to the accompanying drawings using a preferred exemplary embodiment. However, the principle applies that the embodiment does not limit the invention, but only represents one embodiment. The features shown can be carried out individually or in combination with other features of the description as well as the patent claims individually or in combination.

It shows : 1 shows a three-dimensional view of part of a motor vehicle lock and in particular a release lever and an opening in the lock housing,

Figure 2 is a three-dimensional view of a ratchet fastened to a lock case, where the catch is only partially shown, and

Figure 3 shows an assembly of the components of a

Motor vehicle lock according to Figures 1 and 2, which illustrates the engagement relationships between the damping element and other lock components.

FIG. 1 shows a three-dimensional view of a motor vehicle which is only shown in certain areas. Shown is a trigger lever 2 which is pivotably received in the motor vehicle lock 1, the trigger lever being pivotable about a pivot axis 3 in the direction of the arrow P. A lock housing 4 forms an elevation 5, the elevation 5 limiting the pivoting movement of the release lever 2 in a clockwise direction around the axis 3. By moving the Auslösehe lever in the direction of arrow P, an arm 6 of the Auslö sehebels 2 can be pivoted over the opening 7 away. Another arm 8 then serves, for example, to accommodate a Bowden cable, so that the release lever can be pivoted, for example, via an internal or external actuation. There is a recess 9 in the release lever 2 formed, which corresponds to the approximately ring-section-shaped opening 7 in the lock housing 4. In other words, the dimensions of the recess 9 and the opening 7 coincide at least in regions. In some areas, this means that the recess 9, at least in the area in which the recess 9 encloses the opening 7, has a corresponding, that is to say a matching, geometry.

FIG. 2 shows a three-dimensional view of a further component of the motor vehicle lock 1. Shown is a lock case 10 made of a metal sheet on which a locking mechanism 11 is mounted. Threaded openings 12 in the lock plate 10 are used, for example, for mounting the motor vehicle lock 1 in a motor vehicle. The locking mechanism 11 is formed in the region of an inlet mouth 13 of the lock case 10. The locking mechanism has a rotary latch 14 and a pawl 15. The shown locking position shows a ge opened locking mechanism 11, for example, a lock holder, not shown, can retract. By interacting with a lock holder, the catch 14 would be pivoted about the axis 16 in the counterclockwise direction, so that the spring-loaded pawl 15 could also pivot in the counterclockwise direction about the axis 17 and thus can be brought into engagement with the catch 14. The locking mechanism 11 would then be locked, with a pre-locking position and a main locking position of the locking mechanism 11 being acceptable. At a radial end 18, an annular damping element 19 is mounted on a cylindrical extension 20. During a pivoting movement of the pawl 15 about the pivot axis 17, the damping element 19 pivots along a circular path movement about the pivot axis 17. The damping element 19 is, in this embodiment, configured as a separate rubber-elastic damping element 19 and mounted on the cylindrical extension 20 on the pawl 15.

FIG. 3 shows an assembly position of the components of the motor vehicle lock 1 shown in FIGS. 1 and 2. The Schlossge housing 4 was mounted with the release lever 2 on the lock case 10, so that the damping element 19 with the cylindrical extension 20 extends through the opening 7 of the lock housing. The same components are provided with the same reference numerals. The annular damping element 19 can extend through the annular section-shaped opening 7 and can be pivoted about the axis 17 in the opening 7 of the lock housing 4. The ends 21, 22 of the opening 7 form on strokes 21, 22 for the damping element 19. When pivoting in the direction of arrow P2 around the axis 17, the damping element and the pawl 15 perform a movement along a circular path.

Advantageously, the opening 7 in the lock housing 7 can guide or limit the movement of the pawl 15, with the cylindrical extension 20 simultaneously interacting between the arm 6 of the release lever 2 and the cylindri's extension 20 is possible. Thus, on the one hand, the possibility is created that the release lever 2 acts directly on the pawl 15 and, at the same time, the opening 7 in the lock housing 4 enables guidance and limitation of the movement of the pawl 15. In particular, movements can be dampened and noise can be eliminated.

Reference symbol list

1 motor vehicle lock

2 release levers

3, 16, 17 axis

4 lock housings

5 increase

6, 8 arm

7 opening

9 recess

10 lock case

11 lock

12 threaded opening

13 inlet mouth

14 catch

15 pawl

18 radial end

19 damping element

20 cylindrical extension 21, 22 stop, ends

P, P2 arrow

Claims

1. Motor vehicle lock (1) having a locking mechanism (11) consisting of a rotary latch (14) and at least one pawl (15), the rotary latch (14) by means of the locking pawl (15) in a locking position, in particular a pre-locking position and a main locking position , can be fixed and the pawl (15) interacts in at least one end position with a damping element (19), characterized in that the damping element (19) can be arranged directly on the pawl (15).

2. Motor vehicle lock (1) according to claim 1, characterized in that the damping element (19) interacts with a further component, in particular a movable component (2), of the motor vehicle lock (1).

3. Motor vehicle lock (1) according to one of claims 1 or 2, characterized in that the damping element (19) in an opening (7) of the lock housing (4) of the motor vehicle lock (1) can be guided.

4. Motor vehicle lock (1) according to one of claims 1 to 3, characterized in that by means of the lock housing (4) stops (21, 22) for the damping element (19) can be formed.

5. Motor vehicle lock (1) according to one of claims 1 to 4, characterized in that the damping element (19) as a separate component on the pawl (15) is fixable.

6. Motor vehicle lock (1) according to one of claims 1 to 5, characterized in that the damping element (19) on a cylindrical extension (20) of the pawl (15) can be fastened, by means of the cylindri's extension (20) the pawl (15) can be actuated.

7. The motor vehicle lock (1) is bar according to one of claims 1 to 6, characterized in that the damping element (19) is annular, preferably as an art Toffring _S, and more preferably as a rubber-elastic synthetic _S Toffring Ausbild.

8. Motor vehicle lock (1) according to one of claims 1 to 7, characterized in that the damping element (19) cooperates with a release lever (2).

9. Motor vehicle lock (1) according to one of claims 1 to 8, characterized in that the damping element (19) at a radial end (18) of the pawl (15) can be arranged.

10. Motor vehicle lock (1) according to one of claims 1 to 9, characterized in that the lock housing (4) and the release lever (2) have a cooperating opening (7, 9) and the damping element (19) in the opening (7, 9) is at least feasible.