EP3341543A1

EP3341543A1 - Motor vehicle lock

Info

Publication number: EP3341543A1
Application number: EP16757620.6A
Authority: EP
Inventors: Markus Kothe
Original assignee: Brose Schliesssysteme GmbH and Co KG
Current assignee: Brose Schliesssysteme GmbH and Co KG
Priority date: 2015-08-25
Filing date: 2016-08-22
Publication date: 2018-07-04
Anticipated expiration: 2036-08-22
Also published as: CN108474225B; US11643851B2; DE202015104502U1; EP3341543B1; US20180355641A1; CN108474225A; WO2017032742A1

Abstract

The invention relates to a motor vehicle lock, comprising a supporting structure (2) for holding at least one locking element (3, 3a, 3b) and a lock mechanism (5), wherein the lock mechanism (5) can be put into different function states and, for this purpose, has a function element (6) that can be moved into different function positions corresponding to the function states, wherein a drive assembly (7) having a drive train (8) to the function element (6) is provided for the motorized adjustment of the function element (6), wherein an actuating element (9) is provided, by means of the actuation motion of which said locking element (3, 3a, 3b) can be actuated, wherein the function element (6), in one function position, guides the actuation motion of the actuating element (9) either into a free-movement path (F), in which the actuating element (9) moves freely, or into an actuation path (B), in which the actuating element (9) actuates the locking element (3, 3a, 3b), and for this purpose applies a guiding force to the actuating element (9), the force flow of which guiding force runs outside of the drive train of the drive assembly.

Description

Motor vehicle lock

The invention relates to a motor vehicle lock according to the preamble of claim 1.

From the prior art, a variety of motor vehicle locks is known. Motor vehicle locks are used in all types of closure elements of a motor vehicle. These include in particular side doors, rear doors, tailgates, trunk lids or hoods. In principle, these closure elements can also be designed according to the type of sliding doors.

In DE 10 2004 014 550 AI, for example, a motor vehicle lock with the closing elements pawl and lock latch is described. The motor vehicle lock has a lock mechanism. This can be brought into various functional states. The lock mechanism has a functional element which can be deflected elastically in different functional states corresponding to the functional states. The functional element can be brought into the various functional positions by means of a motor. When adjusting between the various functional positions, the restoring force of the functional element acts fully on the drive train of the drive. As a result, relatively strong and thus costly drives for the adjustment of the functional element are necessary for a secure adjustment of the functional states.

The present invention is based on the problem, a motor vehicle lock according to the preamble of claim 1 in such a way and further develop that can be implemented inexpensively, the various functional states.

The above object is achieved in a motor vehicle lock according to the preamble of claim 1 by the features of the characterizing part of claim 1.

By providing a freewheeling path in which the actuating element is freewheeled and an actuating path in which the actuating element actuates the closing element, it is easily possible to provide various functional states by a functional element, the actuating movement either in the free running path or into the actuation path. For this purpose, the functional element exert a leader on the actuator.

Since the force flow of the executive extends outside of the drive train of the drive assembly, only small driving forces for the adjustment of the functional element are necessary. Managers or actuators for the actuator need not be absorbed by the drive train. The drive for the functional element can therefore be designed correspondingly small and inexpensive.

According to one embodiment of the invention is proposed (claim 6), that the functional element in a functional position releases the actuating movement of the actuating element in the freewheeling path or releases in the actuation path. By simply setting up a deflection, the two functional states are realized in a particularly simple manner. To guide the actuating element, the functional element may have a guide contour.

In order to increase the crash safety of the motor vehicle lock, according to claim 10, the motor vehicle lock can be designed and constructed such that in a functional position "unlocked" the inertia of the actuating element causes a movement of the actuating element in the freewheeling when the speed of the actuating movement exceeds a speed threshold , And causes a movement of the actuating element on the actuating travel when the speed of the actuating movement is below a speed threshold.

In order to design the drive as weak as possible, can be provided according to claim 14, that the axis of rotation of the functional element is at most 2 cm, preferably at most 1 cm, away from the center of mass of the functional element. Further preferably, the axis of rotation of the functional element is guided by the center of mass of the functional element.

The invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. In the drawing shows a motor vehicle lock according to the proposal in a schematic representation in the functional state "locked" with non-actuated actuator, the motor vehicle lock of Fig. 1 in the functional state "locked" upon actuation of the actuator, the motor vehicle lock of Fig. 1 in the functional state "unlocked" upon actuation of the actuator shortly before the beginning of the lifting of the pawl, the motor vehicle lock of Fig. 1 in the functional state "unlocked" upon actuation of the actuating element after the release of the pawl in the open state, the motor vehicle lock of Fig. 1, wherein the pawl is being excavated by a motor Exploded view of the components mounted on the bearing bolt of the motor vehicle lock of FIG. 1.

Fig. 1 shows schematically a proposed motor vehicle lock 1. With the motor vehicle lock 1 various closure elements of a motor vehicle can be kept. In this respect, reference is made to the introductory part.

The motor vehicle lock 1 has a support structure 2 for receiving at least one closing element 3 and a lock mechanism 4. The support structure 2 is preferably fixedly connected to a housing, not shown, of the motor vehicle lock 1 or may form part of a housing of the motor vehicle lock 1, not shown.

Here and preferably, the closing elements 3 lock latch 3a and pawl 3b are arranged on the support structure 2. To hold a closure element, the latch 3a and the pawl 3b in the usual way with a striker 5 together. The lock mechanism 4 can be brought into different functional states. For this purpose, the lock mechanism 4 a in different, the functional states corresponding functional positions adjustable functional element 6. The functional element 6 is preferably made of plastic. Particularly preferably, the functional element 6 is designed as a plastic injection-molded part.

For motorized adjustment of the functional element 6, a drive arrangement 7 with a drive train 8 to the functional element 6 is provided. For at least one functional position of the functional element 6, a stop 6a may be provided. In addition, 6 stops may be provided for further, in particular for all, functional positions of the functional element.

Furthermore, the motor vehicle lock 1 has an actuating element 9, by the actuation movement of which the at least one closing element 3, in particular the pawl 3b, can be actuated. In the embodiment, the actuation of the closing element 3 is the lifting of the pawl 3b. Preferably, the actuating element 9 is actuated by an actuating lever, not shown, in particular by an outside door handle or a door handle.

The motor vehicle lock 1 may additionally have a further actuating element, not shown, by the actuating movement of which the at least one closing element 3, in particular the pawl 3b, can be actuated. Preferably, the further actuating element 9, not shown, is actuated by a further actuating lever, not shown, in particular a door inner handle.

In a functional position, the functional element 6 can either lead the actuating movement of the actuating element 9 into a freewheeling path F, in which the actuating element 9 freewheels, or lead into an actuating path B in that the actuating element 9 actuates the closing element 3. Preferably, the actuating element 9 actuates the closing element 3 by means of an engagement contour 9a. This can be designed as a nose. In the lock mechanism 5 further ways, in particular for further functional states, can be provided for the actuating element 9.

The fact that different functional states of the motor vehicle lock 1 are provided via the freewheeling path F or the actuation path B can the lock mechanism 5 are designed to be mechanically weak. The components of the lock mechanism 5 need not be dimensioned to accommodate blocking forces within the lock mechanism 5.

To guide the actuating element 9, the functional element 6 exerts a guiding force on the actuating element 9. The force flow of the executive runs outside of the drive train 8 of the drive assembly 7. As a result, the drive train 8 does not have to receive any guiding forces and / or actuating forces of the actuating element 9 for providing the functional states. The drive 10 only has to adjust the functional element 6 and possibly resist frictional forces due to the sliding of the actuating element 9. He can be interpreted correspondingly weak.

Here and preferably, the closing elements 3 are arranged in a different plane of the motor vehicle lock 1 than the functional element 6. The actuating element 6 preferably moves in the plane of the functional element 6.

As shown in the embodiment of FIG. 6, the closing elements 3 and the functional element 6 can be arranged on different sides of the support structure 2. The support structure 2 then preferably has a recess 11 for coupling the closing element 3 and the functional element 6. For this purpose, an engagement contour 3c, which may be formed on the closing element 3, in particular the pawl 3b, or on the functional element 6, protrude through the recess 11. In the exemplary embodiment, the engagement contour 3 c is formed on the pawl 3b or a lever coupled to the pawl 3b. It is here and preferably covered by the functional element 6.

The freewheeling path F and the actuating travel B preferably run side by side. In the exemplary embodiment, the freewheeling path F and the actuating travel B extend offset in the direction transverse to the axis of rotation S _A, S _{B of} a closing element 3 next to one another. Additionally or alternatively, the freewheeling path F and the actuating travel B can also run in the direction of the axis of rotation S _A, S _{B of} a closing element 3 next to one another. The freewheeling path F and the actuating travel B can run parallel to each other. For guiding the actuating element 9, the functional element 6 here and preferably has a guide contour 6b. Preferably, the guide contour 6b has a steady course. The guide contour 6b can, as shown in the exemplary embodiment, be designed in the manner of a cylinder section.

The functional element 6 may be designed according to a further embodiment not shown in the manner of a switch and lead with a guide contour 6b, the actuator 9 either in the freewheeling path F and / or the actuation path B.

The guide contour 6b is preferably surface-treated, in particular coated, in order to ensure good sliding of the actuating element 9 along the guide contour 6b. Preferably, the guide contour 6b is coated with plastic material.

Furthermore, the engagement contour 9a of the actuating element 9 can also be surface-treated, in particular coated. Preferably, the engagement contour 9a of the actuating element 9 is coated with a plastic material.

The plastic material for configuring the guide contour 6b and / or the engagement contour 9a may be a thermoplastic polyester elastomer (TPE) and / or a polymer slide bearing material. In this context, the commercially available materials Hytrel.RTM. 4774, Hytrel.RTM. 5526, Hytrel.RTM. 6356 from DuPont.RTM. Or Riteflex.RTM. 677 from Ticona.RTM. Have proved particularly suitable as thermoplastic polyester elastomer in this context.

The commercially available materials Iglidur® G, Iglidur® W 300 and Igloidur® J from Igus® have proven to be polymer bearing materials.

Here and preferably, the functional element 6 performs the actuating movement of the actuating element 9 in a functional position by releasing the actuating movement of the actuating element 9 into the actuating path B. In this embodiment, the functional element 6 leads in another functional position, the actuating movement of the actuating element 9 to the freewheeling path F, preferably by blocking the actuation path B. Further preferably, the functional element leads, as described above, either to the actuation path B or to the freewheeling path F. Additionally or alternatively, it may be provided that the functional element 6 releases the actuating movement of the actuating element 9 into the freewheeling path F in a functional position. In this embodiment, the functional element 6 in another functional position, the actuating movement of the actuating element 9 on the actuating path B, preferably by blocking the freewheeling F. Further preferably, the functional element leads, as described above, either to the actuation path B or to the freewheeling path F.

In a development of the invention, it is proposed that the motor vehicle lock 1 has a spring arrangement 12 acting on the actuating element 9. The spring assembly 12 may comprise a leg spring. Here and preferably, the spring arrangement 12 biases the actuating element 9 against the functional element 6. In this way, a movement tendency of the actuating element 9 can be effected during actuation. In the exemplary embodiment, the spring arrangement 12 causes a movement tendency of the actuating element 9 on the actuation path B.

Here and preferably, the actuating element 9 may have a sliding block 9b for guiding the movement of the actuating element 9. The sliding block 9b is preferably at least partially guided in a backdrop, not shown. Preferably, the backdrop provides at least one motion guide on a portion of the actuating path B and / or on a portion of the freewheeling path F. Particularly preferably, the gate is designed to be closed and provides a motion guide for both the freewheeling path F and for the actuation path B. In the exemplary embodiment, the scenery provides a motion guide on the actuation B and the freewheeling F, while the functional element 6 by locking or releasing the actuator 9 leads either to the actuation B or the freewheeling F.

In the illustrated embodiment, the lock mechanism 5, the function "locked" and "unlocked", in particular on the respective functional position of the functional element 6, ready.

1 and 2 show the functional element 6 in a functional position "locked." The functional element 6 obstructs the actuating element 9 the beta element. As the actuating element 9 is actuated, it is pressed onto the functional element 9 by the spring arrangement 12 and slides on the functional element 9. The actuating element 9 is guided on the freewheeling path F on account of the guiding force returning to the functional element 6, which here and preferably is a counterforce for the actuating element 9. Here and preferably, the guide force acts perpendicular to the direction of movement of the actuating element. 9

On the freewheeling path, the closing element 3 can not be excavated by the actuating element 9, since it is held out of engagement by the actuating element 9.

3 shows the functional element 6 in a functional position "unlocked". Upon actuation of the actuating element 9, the actuating element 9 is pressed by the spring arrangement 12 onto the actuating path B. The functional element 6 guides the actuating element 9 by releasing the actuating path B for the actuating element 9. The actuating element 9 lifts the closing element 3 by the actuating movement on the actuating path B, as shown in FIG. When operating the closing element 3, 3a, 3b here and preferably the actuating element 9 acts gearless on the closing element 3. The term "gear free" means here that the closing element 3, 3a, 3b without the interposition of a transmission, in particular a lever mechanism, on the closing element 3 acts.

The actuating element 9 acts in the embodiment via its actuating contour 9a indirectly via an active contour 6c on the closing element 3, in this case the pawl 3b. The active contour 6c is formed here and preferably on the functional element 6.

According to another embodiment, the actuating element 9 can also act directly on the closing element 3, in particular the pawl 3b.

As an alternative to the kinematics described above, the functional element 6 in a functional position "unlocked" can also lock the release path F or "lock it" in a functional position in the sense of a kinematic reversal Spring assembly 12 press the actuator on the release path F and the functional element 6 release the release path F.

Preferably, the lock mechanism 5 additionally provides the function "child-resistant" and / or "theft-proof", in particular likewise via a functional position of the functional element 6.

The mentioned functional states preferably relate to the possibility of opening a closure element of a motor vehicle by means of a door inner handle and by means of an outside door handle. In the "locked" functional state, it can be opened from the inside, but not from the outside In the "unlocked" functional state, it can be opened from the inside as well as from the outside. In the functional state "theft-proof" can not be opened either from the inside or from the outside In the functional state "child-proof" can be unlocked from the inside, but not opened from the inside or from the outside.

Furthermore, in the proposed motor vehicle lock 1, a crash safety device can be provided in a particularly simple manner. When the motor vehicle lock 1 is designed and constructed in such a way that in a functional position "unlocked" the inertia of the actuating element 9 causes a movement of the actuating element 9 on the freewheeling F, when the speed of the actuating movement exceeds a speed threshold, and a movement of the actuating element. 9 in the illustrated embodiment, the actuator 9 is guided on the actuation path B during a normal actuation and the pawl 3b is lifted out, in a crash situation in which, in particular, in the event of a crash high accelerations occur, the actuator 9 will move very fast, with its inertia prevents the spring assembly 12 moves the actuator in the actuation B, although the functional element 6, the actuation path B has released itself. Therefore, the actuator 9 will move in a crash situation in the freewheeling F. The pawl 3b is not excavated and the closure element of the motor vehicle remains closed. Preferably, the drive 10, which drives the functional element 6, formed in the manner of a direct drive. In a direct drive, no gear ratio is arranged between the drive 10 and the functional element 6.

Additionally or alternatively, the drive assembly 7 may be at least partially integrated into the functional element 6. For example, the coils 13 or of the permanent magnets 14 of the drive 10 can be integrated into the functional element 6, for example by the functional element 6 being injection-molded around the coils 13 and / or permanent magnets 14 in the plastic injection molding process. In general, the functional element 6 and the drive 10 can be non-positively and / or positively and / or materially connected or integrated with each other.

In the illustrated preferred embodiment, the drive 10 is designed as a claw pole motor. However, it can also be designed according to another drive concept.

Preferably, the functional element 6 is rotationally and / or linearly movable between its functional positions. In the illustrated embodiment, the functional element 6 is rotatably moved between its functional positions.

The axis of rotation R of the functional element 6 is aligned parallel, in particular coaxially, to the axis of rotation S _A, S _{B of} a closing element 3 and / or to the axis of rotation D of the drive 10. In the exemplary embodiment, the axis of rotation R of the functional element 6 is aligned coaxially with the axis of rotation S _{B of} the pawl 3b. In addition, the rotational axis D of the drive is aligned coaxially with the axis of rotation S _{B of} the pawl 3b. As a result, a particularly compact embodiment of the motor vehicle lock 1 is possible.

Preferably, the motor vehicle lock 1 has at least one bearing pin 15, 16 about which the functional element 6 is rotatably movable. The bearing pin 15, 16 can also form the stator material 10 a of the drive 10. In such a design, the coils 13 of the drive 10 are arranged around the bearing pin 15, 16. In addition, the pawl 3b or the latch 3a can be mounted on the bearing pin 15, 16 and the pawl. Preferably is about the bearing pin 15, 16 of the power flow of the executive outside the drive train 8 of the drive assembly 7 derived.

Additionally or alternatively, it may be provided that the functional element 6 is guided in a form-fitting manner over at least one section and, in particular, at least part of the force flow of the guiding force extends beyond the positive connection. Furthermore, the motor vehicle lock 1 may have a stop, not shown, via which the force flow of the guiding force outside the drive train of the drive arrangement is derived. In the latter case, the stop preferably cooperates with the guide contour 6b. In this case, the stop can at the same time provide a guide for the functional element 6.

In order to keep the forces necessary for the adjustment of the functional element 6 as low as possible, it is provided here and preferably that the axis of rotation R of the functional element 6 is at most 2 cm, preferably at most 1 cm, away from the center of mass M of the functional element 6. In the preferred exemplary embodiment illustrated, the axis of rotation R of the functional element 6 is guided through the center of mass M of the functional element 6. A mass displacement resulting from the guide contour 6b is compensated by a contour 6d lying opposite the guide contour 6b.

The motor vehicle lock 1 can, as described above, have a further actuating element for opening the motor vehicle lock 1. Preferably, the further actuating element 9 acts to open the motor vehicle lock 1 on the functional element 6. For this purpose, the functional element 6 may have an additional operating contour 6e, via which the pawl 3b can be raised. The contour 6d lying opposite the guide contour 6b and the actuating contour 6e are preferably formed together on the functional element 6.

Here and preferably, the actuating element 9 or possibly the further actuating elements 9 has a rod and / or a Bowden cable.

Furthermore, the functional element 6 preferably has an active contour 6c, via which the drive 10 can lift the pawl 3b, as shown in FIG. shows. In this way it is particularly easy to provide an opening auxiliary drive for motorized lifting of the pawl 3b.

The proposed motor vehicle lock 1 has a structurally simple and compact construction. Characterized in that the force flow of the executive outside of the drive train 8 of the drive assembly 7 extends, the functional element 6 can be moved with a very weak drive 10. Consequently, not only a particularly compact, but also cost-effective construction of the motor vehicle lock 1 is possible.

Claims

protection claims

1. Motor vehicle lock with a support structure (2) for receiving at least one closing element (3, 3a, 3b) and a lock mechanism (5), wherein the lock mechanism (5) can be brought into different functional states and for this purpose in different, the functional states corresponding functional positions adjustable Functional element (6), wherein for the motorized adjustment of the functional element (6) is provided a drive arrangement (7) with a drive train (8) to the functional element (6) out, wherein an actuating element (9) is provided by the actuation movement of a said closing element (3, 3a, 3b) is operable,

characterized,

that the functional element (6) in a functional position, the actuating movement of the actuating element (9) either in a freewheeling path (F) leads, in which the actuating element (9) free-running, or in an actuating path (B), in which the actuating element (9) the closing element (3, 3a, 3b) is actuated, and for this purpose exerts a guiding force on the actuating element (9) whose force flow extends outside the drive train of the drive arrangement.

2. Motor vehicle lock according to claim 1, characterized in that the closing element (3) which is actuated on the actuating travel (B) by the actuating element (9) is a pawl (3b).

3. Motor vehicle lock according to claim 1 or 2, characterized in that the actuating element (9) during the actuation of the closing element (3, 3a, 3b) gearless on the closing element (3, 3a, 3b) acts, and / or that the actuating element (9) upon actuation of the closing element (3, 3a, 3b) acts directly on the closing element (3, 3a, 3b).

4. motor vehicle lock according to one of the preceding claims, characterized in that the freewheeling (F) and the actuating travel (B) run side by side, preferably, that the freewheeling (F) and the actuating travel (B) in the direction of the axis of rotation (S _A , S _B ) of a closing element (3, 3a, 3b) or transversely to the axis of rotation (S _A , S _B ) of a closing element (3, 3a, 3b) offset next to each other.

5. Motor vehicle lock according to one of the preceding claims, characterized in that the functional element (6) has a guide contour (6b) for guiding the actuating element (9), preferably that the guide contour (6b) surface-treated, preferably coated, is, more preferably, the guide contour (6b) is coated with plastic material, in particular a thermoplastic polyester elastomer (TPE) and / or a polymer sliding bearing material.

6. Motor vehicle lock according to one of the preceding claims, characterized in that the functional element (6) in a functional position, the actuating movement of the actuating element (9) in the freewheeling path (F) releases or releases in the actuation path (B).

7. Motor vehicle lock according to one of the preceding claims, characterized in that the motor vehicle lock (1) acting on the actuating element (6) spring arrangement (12), preferably, that the spring arrangement (12), the actuating element (9) in at least one functional position of Functional element (6) biases against the functional element (6).

8. Motor vehicle lock according to one of the preceding claims, characterized in that the spring arrangement (12) biases the actuating element (9) on the actuating path (B).

9. Motor vehicle lock according to one of the preceding claims, characterized in that the lock mechanism (5) provides the functions "locked" and "unlocked", in particular via functional positions of the functional element (6), preferably, that the motor vehicle lock (1) in addition to the Function "Parental control" and / or "theft-proof", in particular via functional positions of the functional element (6) provided.

10. Motor vehicle lock according to one of the preceding claims, characterized in that the motor vehicle lock (1) is designed and constructed such that in a functional position "unlocks" the inertia of the actuating element (9) movement of the actuating element (9) on the freewheeling (F ) causes when the speed of the actuating movement a Speed threshold is exceeded, and causes a movement of the actuating element (9) on the actuating travel, when the speed of the actuating movement is below a speed threshold.

11. Motor vehicle lock according to one of the preceding claims, characterized in that the drive (10) in the manner of a direct drive, the functional element (6) drives and / or that the drive assembly (7) is at least partially integrated into the functional element (6).

12. Motor vehicle lock according to one of the preceding claims, characterized in that the functional element (6) is moved rotationally and / or linearly between its functional positions, preferably that the axis of rotation (R) of the functional element (6) parallel, in particular coaxial with the axis of rotation ( S _A , S _B ) of a closing element (3, 3a, 3b) and / or to the axis of rotation (D) of the drive (10) is aligned.

13. Motor vehicle lock according to one of the preceding claims, characterized in that the motor vehicle lock (1) has a bearing pin (15, 16) about which the functional element (6) is rotatably movable, preferably, that the bearing pin (15, 16) the stator material forms, and / or that on the bearing pin (15, 16) of the power flow of the executive outside the drive train (8) of the drive assembly (7) is derived.

14. Motor vehicle lock according to one of the preceding claims, characterized in that the axis of rotation (R) of the functional element (6) a maximum of 2 cm, preferably at most 1 cm, from the center of mass (M) of the functional element (6) is removed, more preferably that the Rotation axis (R) of the functional element (6) through the center of mass (M) of the functional element (6) leads.

15. Motor vehicle lock according to one of the preceding claims, characterized in that the motor vehicle lock (1) has a further actuating element for opening the motor vehicle lock (1), preferably that the further actuating element for opening the motor vehicle lock (1) also on the functional element (6). acts.

16. Motor vehicle lock according to one of the preceding claims, characterized in that the actuating element (6) has a rod and / or a Bowden cable or is designed as a rod or Bowden cable.