EP1489252A2 - Motor vehicle door lock - Google Patents

Abstract

The motor (4) and actuating lever (5) drives the double armed lever assembly (6) to a stretched or contracted state which rotates the lock drive lever (8) to close a rotating lever (1) over the bolt (3). Anti-clockwise motor action buckles the lever assembly to rotate the drive lever to release the lock.

Description

The invention relates to a motor vehicle door lock, with a catch with catch and pawl, and with a motor drive for a closing and / or opening assistance device, wherein the closing and / or opening aid device one acted upon by the motor drive Rocker with the pawl mounted thereon having.

A motor vehicle door lock of the initially described Design is described in the context of DE 37 25 075 C1. There, the swingarm is a lever gear to the motor Drive connected. The well-known motor vehicle door lock has basically proven, but is complex in terms of its mechanical construction and in particular pushes then limits, if independent of the described motor opening or closing, for example mechanical closing should be initiated because of motor drive has failed.

The teaching of DE 43 11 is facing similar problems 786 A1. Again, the pawl is mounted on the rocker and has on its a pawl pin facing away Side over a control rod comprehensive Pawl nose. Difficulties can turn then result if in case of failure of the motor drive For example, a mechanical closing and / or opening movement to be completed.

DE 101 14 065 A1 also documents a motor vehicle door lock according to the generic term. There is between the rotary latch and a rotary element as a rocker Mitnehmer provided with the help of the catch at missing, not activated, or broken cucumber that Take the rotating element or the rocker into the main locking position can. So it is already a mechanical closing process described. The well-known doctrine looks next to that a closing aid for the rotary element or the rocker a guide groove, which with a bolt on the relevant Rotary element is in communication. Come in addition, that in addition to the rotary element and the pawl out becomes. Because this has a driving pin, which is guided in a guide setting.

All the aforementioned levers must be in a closing operation be moved in the appropriate scenes. Thereby malfunctions can be excluded. Also exists the risk that the rotary member or the rocker and / or the pawl be blocked during the individual operations. - Here the invention aims to provide a total remedy.

The invention is based on the technical problem, a generic motor vehicle door lock so on develop that even in case of failure of the motor drive a perfect mechanical operation of the locking mechanism, in particular, a closing process can be initiated.

To solve this technical problem is a generic Motor vehicle door lock in the context of the invention characterized in that the motor drive one of him acted on toggle element with preferably has two toggle levers.

It likes the one toggle lever as a swing lever and the other Toggle be designed as a drive lever. Of the Swing lever is connected to the drive arm of the rocker, while the motor drive on the drive lever is working. Alternatively, the motor drive can also on the rocker arm or on the knee lever Joining joint work.

In the position "open" the rocker takes the toggle element an entangled arrangement of the two toggle lever one. In contrast, the two toggle lever in the position "closed" the rocker over an approximately stretched Course. The position "closed" of the rocker and therefore the approximately stretched arrangement of the two toggle lever is supported by the force of a spring. These Spring is supported on the one hand on the one toggle lever and on the other hand on the other toggle.

Because the two knee levers have in the region of their connection axis about the already mentioned spring, which both toggle lever in the direction of approximately stretched course and consequently the position "closed" of the rocker applied.

In addition, the catch like for example in a mechanical closing the swingarm from its position take "open" to the "closed" position. in principle It is also possible that the catch in the frame a mechanical opening process ensures that the Swingarm from its position "closed" in the position "open" is transferred. So it depends, with one mechanical closing and / or opening process for it Ensure that a mechanical connection between the catch and the swingarm is guaranteed, in the Sense that the catch takes the swingarm.

As a rule, the swingarm has an overstroke stop for this purpose for the catch, so that the catch in their overhang position the swingarm from their position "open" moved to the "closed" position when a mechanical closing should be displayed. Vice versa will of course be moved during an opening process. Anyhow, the described over stroke stop at the Rocker for that during a mechanical closing process and / or opening the described mechanical connection made between the swingarm and the catch becomes. This happens at least during a closing process when the catch performs an overstroke. That means that the catch in a mechanical Closing process when sweeping her overtravel - and only then - take the swingarm with you, from its position "open" to the "closed" position.

Here, the invention is based on the recognition that the Overstroke when servo-closing usually not reached is, rather, the catch of the lock in their main stop invades and from there with the help of the motor Drive is pulled, so that an associated vehicle door is flush with the vehicle body. To this state even with a mechanical To achieve closing, it is necessary that To move the swingarm mechanically to the "closed" position and to hold in this. This ensures already described over stroke stop.

In detail, the rocker Z-shaped with pawl arm and drive arm and center pivot between the be formed above both arms. It likes the Over stroke stop on one the pawl arm and Arranged drive arm interconnecting center arm be. At this middle arm is also the fulcrum. However, it is also any other form for the Rocker, e.g. L-shaped, conceivable.

As a result, a motor vehicle door lock is available first of all, a simple and functional Servo closure enabled. Because that's it only required that the motor drive (at in the main catch of the catch) the swingarm of their position "open" in the position "closed" transferred. This happens simply because the drive with a drag lever, a cam, etc. on an element of the Toggle element works, so that both toggle lever one take approximately stretched course.

If the power of the engine continues to fall, so does the spring between the two toggles for the swingarm their position "closed" occupies, so that the two toggle arms approximately stretched to each other become. The motor drive therefore requires only a few Components.

In addition, one intended directly on the swingarm Spring be realized in the form of a compression spring, the Rocker spring-loaded towards its position "open", d. H. contrary to the direction of force between the two levers provided spring works. It is the force of the spring between the two toggle arms so sized that they are the force of the compression spring on the swingarm exceeds, so that the swingarm when the power of the Motors regularly the position "closed" occupies.

It is of particular importance the further aspect that The described motor vehicle door lock mechanically close properly. All this succeeds without guides, Scenes etc. Actually, this one exists mechanical closing process as long as no difference in principle to close the servo until the catch their main catch or has reached pre-rest. Because in this position (Rotary catch in the main or Vorrast) are in the motor If the rocker pulls in any existing rotary luffing and / or pawl switch or sensors activated. These report the condition "catch in the main catch or Vorrast "to the motor drive, which the two Almost cranks out the toggle so that the swingarm is up Position "closed" occupies.

However, if the motor drive has failed, takes place the signaling in question does not or finds the pulling the swingarm motor does not take place. Then the between acts the two toggle lever provided spring in such a way that Turn the toggle lever in the approximately stretched course. This can be done by an overstroke movement of the catch supported by the operator, because in this case acted upon by the rotary overthrust stop on the Swingarm ensures that the swingarm from their position "open" is transferred to the "closed" position.

Such a process essentially has "only" frictional forces overcome, because the swingarm and the catch are coaxially mounted and the spring between the two Knee levers supporting acts. At the same time takes the Use the overtravel stop to catch the swingarm. Here are the main benefits.

Fig. 1 bis 5

den erfindungsgemäßen Kraftfahrzeugtürverschluss in verschiedenen Schließphasen.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it:

Fig. 1 to 5

the motor vehicle door lock according to the invention in different closing phases.

In the figures, a motor vehicle door lock is shown, the in its basic structure over a Gesperre 1, 2 with rotary latch 1 and pawl 2 has. As well known surrounds the catch 1 in their closed position a locking pin 3, which in the open position of the catch 1 is released. On the one hand corresponds to the closed position an associated motor vehicle door and on the other hand their open position.

Further realized is a motor drive 4, 5, 6 which via a merely indicated electric motor. 4 and a drag lever 5 has. Instead of the rocker arm 5 is basically any transmission element conceivable, which is capable of using the electric motor 4 to apply a toggle element 6 so that this the two basic positions "entangled" (see Fig. 1 to 3) and "stretched" (see Fig. 4 and 5) occupies.

For this purpose, the toggle lever element 6 has two toggle levers 6a, 6b. The one toggle lever 6a is designed as a rocker arm 6a, while the other knee lever 6b a drive lever 6b represents. The swing lever 6a is via a hinge 7 connected to a rocker 8. In contrast, the drive lever 6b co-equal to another pivot 9 connected to the cam follower 5. To the folded position the two toggle levers 6a, 6b cancel, is the Drag lever 5 in the transition from Fig. 3 to Fig. 4 with Help the electric motor 4 is turned clockwise, so that a stop 10 on the drag lever 5 against the drive lever 6b pushes and this also takes clockwise. As a result, the two toggle levers 6a, 6b in the stretched Position transferred to FIG. 4.

The relevant movement process is stopped as soon as the Knee lever element 6 against a housing-fixed stop 11th comes to the plant. The stretched arrangement of the two toggle levers 6a, 6b or the toggle lever element 6 corresponds to the position "closed" the rocker 8, to the following will be discussed in more detail. Opposite is the rocker 8 in entangled toggle levers 6a, 6b in their Position "open".

Another stop 12 on the drag lever 5 ensures that the rocker 8 from the position "closed" to the Fig. 4, 5 are transferred back to the "open" position can be applied by the electric motor 4 counterclockwise is moved and the finger lever 5 accordingly, so that the stop 12, the toggle lever element 6 from the housing Stop 11 removed and thus the entangled Position according to FIGS. 1 to 3 (again) is achieved.

The two toggle levers 6a, 6b are connected via a pivot 13 connected with each other. Coaxial with this hinge 13 and its connection axis 13 is a spring 14, which the two toggle levers 6a, 6b in the direction of their approximate stretched course and consequently the position "closed" the rocker 8 according to FIGS. 1 to 3 acted upon. Here you can also see that then the rocker 8 at the housing-fixed stop 11 is applied. This will take the two toggle levers 6a, 6b in their entangled position a certain angle to one another, in the context of Embodiment at about 60 ° to 70 °.

When the spring 14 is a coil spring with coaxial with the connecting axis 13 arranged turns and respective ends, on the one hand against a stop 15 on the drive lever 6b and on the other hand against a Abut stop 16 on the rocker arm 6a. additional to this spring yet another spring is provided, and Although in the form of a compression spring which the rocker. 8 in their position "open". Because the Force of the spring 14 whose spring force, however, exceeds ensures the spring 14 in any case that if dropped Force of the motor drive 4, 5, 6, the toggle 6a, 6b take their approximately stretched course, so that the rocker 8 in the position "closed" in total is transferred.

The motor drive 4, 5, 6 forms the inclusion of the Knee lever element 6 and in conjunction with the rocker. 8 a closing and / or opening aid device 4, 5, 6, 8. As already described, the electric motor 4 is in the Position, the ratchet 1, 2 in the contracted position after Fig. 4 and can also ensure that the Lock 1, 2 is reopened. In the first case worries the drag lever 5 with its stop 10 that the Knee lifting element 6 from the entangled in the extended course while the latter case corresponds to it, that the further stop 12 on the drag lever. 5 for the change of the extended course of the toggle element 6 to the entangled position ensures.

In a mechanical closing and failed motor drive 4, 5, 6 now takes the catch 1 the Rocker 8 from its position "open" (see Fig. 1 to 3) in the position "closed" with (see Fig. 5). It has the Z-shaped with pawl arm 8a, 8b and middle arm Drive arm 8c and central pivot point 17 formed Rocker 8 via an additional over stroke stop 18 am Middle arm 8b. With the help of this Überhubanschlag 18 is ensured that during a mechanical closing process the catch 1 the rocker 8 in the "closed" position take with you, during an overstroke.

This overstroke is shown in FIG. 5, where one recognizes that only in the course of the overstroke (ie a rotational movement the catch 1 beyond the Hauptastaststellung addition) the overtravel stop 18 against a stop surface 19 of the Rotary catch 1 comes to the plant. As a result, that at this overtravel and related Counterclockwise movement of the catch 1 also the swingarm 8 is taken. Because the rocker 8 and the catch 1 are coaxially mounted in the common pivot point 17. On the rocker 8 is in another pivot 20, the pawl 2 stored.

The operation is in a mechanical closing process as follows. With a corresponding firm slamming the door moves the locking pin 3, the catch 1 over first their pre-locking position of FIG. 2 further into the main detent position according to FIG. 3.

Based on this, the rotary latch 1 moves counterclockwise about their axis of rotation or their fulcrum 17 on and reached after the main detent position the Überhubbereich, as shown in Fig. 5. at This process is the overtravel stop 18 on the rocker 8 taken from the catch 1, so that the rocker. 8 from their position "open" according to FIGS. 1 to 3 in the position "closed" according to FIGS. 4 and 5 transferred becomes.

This is done with the force of the spring 14, which is the rocker 8 in the direction of their position "closed" applied. In the position of FIG. 5 is the associated motor vehicle door closed. As usual, the locking mechanism 1, 2 then open when the motor drive 4, 5, 6 corresponding Opening movements initiated. But it can too mechanically the pawl 2 are dug, so that the Rotary latch 1 spring-assisted releases the locking pin 3.

Claims (10)

Motor vehicle door lock, with a locking mechanism (1, 2) with a rotary latch (1) and pawl (2), and with a motor drive (4) for a closing and / or opening aid device (4, 5, 6, 8), wherein the closing - and / or opening aid means (4, 5, 6, 8) from the motor drive (4, 5, 6) acted upon rocker (8) with the pawl (2) mounted thereon, characterized in that the motor drive (4, 5, 6) has an acted upon by him toggle element (6) with preferably two toggle levers (6a, 6b). Motor vehicle door lock according to claim 1, characterized in that the one toggle lever (6a) as a rocker arm (6a) and the other toggle lever (6b) is designed as a drive lever (6b). Motor vehicle door lock according to claim 1 or 2, characterized in that the rocker arm (6a) to the drive arm (8c) of the rocker (8) is connected, while the motor drive (4, 5, 6) on the drive lever (6b) operates. Motor vehicle door lock according to one of claims 1 to 3, characterized in that the toggle lever element (6) in the "open" position of the rocker (8) an entangled arrangement and in the "closed" position has an approximately elongated course. Motor vehicle door lock according to one of claims 1 to 4, characterized in that the rocker (8) is spring-loaded in the direction of its position "open". Motor vehicle door lock according to one of claims 1 to 5, characterized in that the two toggle levers (6a, 6b) in the region of their connecting axis (13) have a spring (14), which both toggle lever (6a, 6b) in the direction of approximately elongated course and Consequently, the position "closed" of the rocker (8) acted upon. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the rotary latch (1) entrains the rocker (8) during a mechanical closing and / or opening operation. Motor vehicle door lock according to one of claims 1 to 7, characterized in that the rotary latch (1) in a mechanical closing operation in the course of an overstroke movement the rocker (8) from its position "open" in the "closed" position. Motor vehicle door lock according to one of claims 1 to 8, characterized in that the rocker (8) has an overstroke stop (18) for the rotary latch (1). Motor vehicle door lock according to one of claims 1 to 9, characterized in that the rocker (8) Z-shaped with pawl arm (8a) and drive arm (8c) and central pivot point (17) is formed.

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