EP2909404A2

EP2909404A2 - Motor-vehicle door lock

Info

Publication number: EP2909404A2
Application number: EP13826991.5A
Authority: EP
Inventors: Christian Barmscheidt
Original assignee: Kiekert AG
Current assignee: Kiekert AG
Priority date: 2012-10-18
Filing date: 2013-10-17
Publication date: 2015-08-26
Anticipated expiration: 2033-10-17
Also published as: CN104854288A; JP2015537132A; RU2628977C2; JP6458264B2; EP2909404B1; KR20150074067A; BR112015008628A2; CN104854288B; MX2015004696A; KR102087878B1; DE102012020424A1; US9863169B2; CA2891626A1; US20150259952A1; WO2014059966A3; WO2014059966A2; RU2015113726A

Abstract

The subject matter of the present invention is a motor-vehicle door lock which is equipped with a locking mechanism, further with an opening drive (3, 4) which acts on the locking mechanism, and also with an operating lever mechanism (6, 7). At least one sensor (8) for checking an operator opening request is further provided. Finally, a safety device (9, 10, 11), which prevents the locking mechanism (3, 4) from opening at least in its "safe" position, is provided. The invention makes provision for an intermediate lever (7) of the operating lever mechanism (6, 7), which intermediate lever mechanically converts the operator opening request, to selectively act on or not act on the sensor (8) which actuates the opening drive (3, 4), depending on the position of the safety device (9, 10, 11).

Description

Kraftfah rzeugtü rsch loss

Description:

The invention relates to a motor vehicle door lock, with a locking mechanism, also with an opening drive operating on the locking mechanism and an actuating lever mechanism, further with at least one sensor for requesting an operator opening request, and with a securing device which prevents at least in its "secured" position an opening of the locking mechanism ,

The opening drive in such motor vehicle door locks generally provides for the so-called electrical opening of the locking mechanism. In this case, it is typically the case that a handle, for example an external operating lever and / or an internal actuating lever, are not mechanically connected to the locking mechanism. Rather, the acted upon by an operator sensor after a corresponding operator opening request ensures that the opening drive or electric drive is energized to the opening of the locking mechanism. As a result, the locking mechanism is opened according to the motor - not manually. This usually happens in such a way that the opening drive pivots a release lever, which in turn lifts a pawl of a catch as respective components of the locking mechanism. In addition to the term "electrical opening" is in the literature in this context also referred to by the so-called "open by wire" (see "Automotive Handbook" by Bosch, 24th edition, April 2002, pages 896 ff.). An important advantage of such systems is the possibility of being able to realize so-called "passive entry" access to the relevant motor vehicle, since such devices require very fast unlocking actions or so-called "overtaking" solutions Opening drive the locking mechanism already opens respectively the pawl of the

CONFIRMATION COPY Rotary latch has already lifted, although a pre-connected unlocking is not yet complete. This avoids waiting times for the operator. A typical example of a motor vehicle door lock or a motor vehicle door lock with the described functionality for electrical opening is presented and described in EP 1 320 652 B1. At this point, a distinction is made between normal operation and emergency operation. The electric drive acts in normal operation, the locking mechanism for electrical opening and ensures at least in emergency operation for a mechanical opening of the locking mechanism. The emergency operation typically corresponds to an emergency opening, which is or may be required if, for example due to a voltage drop in the motor vehicle, the electric drive is no longer reliable or no longer works. Then, in the context of the known teaching and in the course of emergency operation, nevertheless, a mechanical opening of the locking mechanism is possible, the emergency opening.

A generic motor vehicle door lock is described in the context of DE 197 06 393 B4. Here are various control electronics and associated signal generator realized. Thus, there is a middle-zero switch on the outside door handle as well as on the inside door handle. In addition, the position of a child safety device is also queried as a safety device with the help of a child safety switch. If the child safety device is inserted, the operation of the center-zero switch or sensor on the inside door handle does not lead to an opening signal and consequently not to the fact that the applied sensor correspondingly controls the opening drive. This has proven itself in principle.

The generic teaching according to DE 197 06 393 B4 is characterized by a complex functionality and therefore has the various Sensors on the one hand to query the safety device and on the other hand the handle (inner handle and outer handle). This results in a large number of necessary components for the realization of the known motor vehicle door lock. In addition, the various sensors must be connected to one or more control units to evaluate their signals and control the opening drive. This is typically done today with the help of so-called component carriers including associated interconnect structure. This strip structure is often designed as a stamped grid and expensive to manufacture and assemble for the described reasons in the known teaching.

That is, the complex functionality in teaching the starting point according to DE 197 06 393 B4 not only leads to a large number of sensors, but also to the fact that complex strip conductors are required in order to couple the sensors to an associated control unit or to one another and to be able to actually map all the desired functional states mechanically. As a result, relatively high production costs are observed. Although these can at least partly be justified by the described comfort gain, for example in connection with the "Passive Entry" function, the cost pressure in the automotive industry is enormous, so that cheaper solutions are required.

The invention is based on the technical problem of further developing a motor vehicle door lock of the construction described at the outset such that the technological and design effort is reduced and, in particular, reduced manufacturing costs are observed compared to the prior art. To solve this technical problem, a generic motor vehicle door lock in the invention is characterized in that the operator opening request mechanically converting intermediate lever of the actuating lever work in accordance with the position of the safety device to the opening drive driving sensor selectively applied or not acted upon.

In the context of the invention, first of all a special intermediate lever is used as part of the actuating lever mechanism. This intermediate lever mechanically implements the operator opening request. This means that said intermediate lever, for example, by means of a handle (inner handle and / or external handle) is pivoted at the opening. Thus, as soon as an operator expresses his operator opening request by applying the handle in question regularly pulling, this operator opening request is mechanically implemented by a mechanical coupling of the intermediate lever to the handle. As a result, the intermediate lever typically performs a pivotal movement about an axis, with the aid of which it is mounted in a housing, a lock case, etc. The pivotal movement of the intermediate lever corresponds to the fact that the sensor driving the opening drive is acted upon. The sensor action in turn causes the working on the locking opening drive is driven. Once the opening drive operates in the opening sense, a release lever is pivoted, for example, by means of the opening drive, which in turn lifts a pawl from a catch. As usual, the ratchet is typically composed of the catch and the pawl, wherein the pawl has fallen into the catch in the closed state of the locking mechanism. The scenario described is only passed through or completed when the safety device is in its "unlocked" position. If, on the other hand, the securing device assumes its "secured" position, then the operator opening request does not result in the described pivoting of the intermediate lever with the consequent consequences described above. In this case, the sensor driving the opening drive is then not acted upon, so that the opening drive consequently does not start and the locking mechanism opens. Of particular importance in this context is the fact that the safety device with its respectively assumed position ("unsecured" or "secured") ensures that the operator opening request opens into a pivoting of the intermediate lever (namely "unlocked" in the position of the safety device). ) or not (when the safety device assumes its position "secured"). In this way, the invention comes out with regularly a single sensor.

That is, the position of the safety device is not in the context of the invention - as in the prior art according to DE 197 06 393 B4 - queried by an additional sensor. On the contrary, the sensor which ultimately detects the operator opening request and is acted on by the intermediate lever is the only sensor in the scope of the invention. Because the position of the safety device has a direct influence on whether the intermediate lever acts on the sensor or not.

A further advantage is that the intermediate opening lever which mechanically converts the opening of the operator's opening can be mechanically connected both to the inner handle and to the outer handle or both. That is, within the scope of the invention also separate sensors for one hand, the inner handle and on the other hand omitted External handle, as used in the aforementioned and generic prior art according to DE 197 06 393 B4. Furthermore, the construction is simplified insofar as the intermediate lever may alternatively or in addition to the respective handle also experience a motorized action to open the locking mechanism. This is conceivable, for example, in connection with a remote control of the motor vehicle door lock or the already mentioned "passive entry" access. Both cases lead to the fact that the operator opening wish reflected by, for example, actuating the remote control device or by approaching the motor vehicle is implemented mechanically with the aid of the intermediate lever, in that the intermediate lever experiences the described pivoting. As a result of the pivoting of the intermediate lever of the acted upon by the intermediate lever and the opening drive driving sensor is acted upon, so that the locking mechanism can be opened directly by means of the opening drive. Again, of course, this only applies in the event that the safety device assumes its position "unlocked". On the other hand, if the securing device is in its "secured" position, the operator opening request is not converted into a pivoting movement of the intermediate lever with the described consequences.

In any case, it is clear that the motor vehicle door lock according to the invention is structurally particularly simple. Because ultimately sufficient for the realization of the function "electrical opening" taking into account an additional query a safety device from a single sensor. This not only leads to the saving of the previously mandatory in the prior art sensor on the securing device, but also simplifies a vehicle door lock necessarily provided in the interconnect structure. This mostly designed as a punched grid Consequently, printed circuit board construction can be implemented more simply and less costly in comparison to previous approaches. Here are the main benefits. In detail, the safety device is regularly equipped with an actuating pin. The actuating pin acts on the intermediate lever depending on the position of the safety device ("secured" or "unlocked") at a user opening request. In the "secured" position of the securing device, the actuating pin performs a freewheeling action in relation to the intermediate lever. If, on the other hand, the safety device is "released" in its position, then the actuation pin acts on the intermediate lever. As a result, the intermediate lever is pivoted as described and operates the sensor. Following this, the opening drive starts and ensures the described electrical opening of the locking mechanism.

To implement the various positions of the safety device, this has a manual actuator. That is, the safety device operates within the framework of the teaching of the invention manually or by manual application. Of course, the safety device can of course also motor or electric motor in the various positions ("unsecured" and "secured") are transferred. For reasons of cost and mindful of the fact that the safety device is not regularly applied so often, here recourse to a manual actuator is recommended.

In addition to the manual actuating element, the securing device according to the invention also has an actuating element carrying the actuating pin. The actuator is pivotally connected to the actuator. The actuating element is typically an actuating nut. The actuator is usually designed as a control slide, which - as explained - hingedly connected to the actuating element or the operating nut.

The intermediate lever is usually a blocking lever. The intermediate lever or blocking lever interacts with the opening drive. In fact, at least in so-called normal operation, the blocking lever ensures that any faulty energizing of the opening drive does not result in an undesired and possibly dangerous locking opening. For this purpose, the blocking lever is usually with a blocking lug in engagement with the opening drive as long as no operator opening request is registered. If, however, it comes to such an operator opening request, the intermediate lever or blocking lever is acted upon and pivoted. As a result, then also the sensor undergoes a loading and controls the opening drive. In the position "unlocked" the safety device of the locking lever is mechanically coupled to a handle and / or an electric motor drive. The handle or the electromotive drive each reflect the operator opening request. For this purpose, the handle is pivoted or deflected or applied to the electric motor drive to pivot the blocking lever or intermediate lever. In contrast, in the position "secured" the safety device in each case a freewheeling of the handle and / or the electric motor drive relative to the blocking lever instead.

The operating lever mechanism may also have at least one locking lever as its component. In normal operation, this locking lever consistently retains its "locked" position, as already described in the introduction. That is, the operation of opening the locking mechanism initiated by the opening drive "overrides the transition of the locking lever from its" locked "position to the" unlocked "position taken that the locking lever - in the so-called normal operation - its position "locked" consistently maintained. As a result, an unlocking of the opening drive is realized in the end. In other words, loading the opening drive (in normal operation) will cause the lock lever to maintain its "locked" position and not to be "unlocked" per se. So it is realized the mentioned unlocking lock.

Only in emergency mode, that is to say at typically insufficient voltage for supplying power to the opening drive, does the locking lever assume its "unlocked" position. For this corresponds a so-called emergency opening. The functionality is similar to that designed and designed as it is explained in detail in the German patent application DE ... (my file X 12 901), to which reference is expressly made in this context.

In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; 1 shows the motor vehicle door lock according to the invention in the position

"unlocked" the safety device and "locked";

Fig. 2 shows the object of Figure 1 in the position "unlocked" and

"Unlocked";

Fig. 3, the motor vehicle door lock with the securing device in the

Position "secured" and "unlocked" as well

Fig. 4 shows the object of Figure 3 in the position "secured" and

"Locked".

In the figures, a motor vehicle door lock is shown, which is equipped with a not explicitly shown locking mechanism. As usual, the locking mechanism essentially consists of a catch and a pawl. On the locking mechanism operates a release lever 1, which is pivotable about an axis 2. Pivoting movements of the release lever 1 in the illustrated clockwise direction in the figure 1 about its axis 2 cause a pawl is lifted from a catch and opens the catch spring-assisted. This is ensured in the context of the embodiment, an opening drive 3, 4, which is composed essentially of an electric motor 3 and an applied by the electric motor 3 driven pulley 4.

The driven pulley 4 is equipped on its back, not shown in the drawings with an actuating cam, which acts on the release lever 1 to open the locking mechanism. For this purpose, the electric motor 3 operates on the driven pulley 4 in such a way that it performs about its axis 5 in the figure 1 indicated by an arrow counterclockwise movement. Thus, as soon as the driven pulley 4 completes this counterclockwise movement and the operating cam located on its rear side pivots the triggering lever 1 in turn clockwise about its axis 2, the locking mechanism is opened by means of the opening drive 3, 4.

For further basic structure of the illustrated motor vehicle door lock includes an operating lever mechanism 6, 7. Of the operating lever mechanism, only one locking lever 6 and an intermediate lever 7 or blocking lever 7 are shown. Of course, belong to the operating lever mechanism 6, 7 even more not expressly mentioned lever on which it does not matter in the following consideration. In addition, it can be seen even a sensor 8, which is presently designed as a switch or micro-switch 8. The switch 8 can be acted upon by means of the intermediate lever or blocking lever 7. For this purpose, it is necessary that the intermediate lever or blocking lever 7 is pivoted about its axis 2 in the clockwise direction.

In fact, the intermediate lever or blocking lever 7 is mounted coaxially to the release lever 1 on the common axis 2. A clockwise movement of the intermediate lever or blocking lever 7 about the relevant axis 2 now leads to the blocking lever 7 acts on the sensor or switch 8 with an actuating nose 7a. The associated switch position or change in the switch position is evaluated by a connected control unit as a switch or sensor operation and leads in the exemplary embodiment to the fact that the opening drive 3, 4 is acted upon.

In fact, this results in an opening movement for the locking mechanism. That is, following the operation of the sensor or switch 8, the opening drive 3, 4 is acted upon in the manner by the control unit, not shown, that the driven pulley 4 performs its indicated in the figure 1 counterclockwise movement about the axis 5 and in this process the release lever 1 is pivoted clockwise. As a result, the pawl is lifted from the catch, so that then the locking mechanism is opened.

Finally, one recognizes still a securing device 9, 10, 11, which is presently designed as a child safety device 9, 10, 11. The securing device 9, 10, 11 can basically occupy two positions. In FIGS. 1 and 2, the safety device or child safety device 9, 10, 11 is "unlocked" in the position or "Child safety off". In contrast, the functional position corresponds in Figures 3 and 4 to the position "secured" the securing device 9, 10, 11, according to "child safety on". At least in the position "secured" of the securing device 9, 10, 11 (cf., FIGS. 3 and 4), the securing device or child-safety device 9, 10, 11 prevents an opening of the locking mechanism. With the help of the sensor or switch 8 a total of an operator opening request is queried, as will be explained in more detail below. In fact, this operator opening request is implemented mechanically with the aid of the intermediate lever 7 of the actuating lever mechanism 6, 7. This is done within the scope of the invention in accordance with the position of the securing device 9, 10, 11th

The overall design is made such that the intermediate lever or blocking lever 7, which mechanically converts the operator opening request, depending on the position of the securing device 9, 10, 11, either acts on or does not act upon the sensor 8 activating the opening drive 3, 4. If the safety device or child safety device 9, 10, 11 is in the "released" or "child safety off" position (cf., FIGS. 1 and 2), then the intermediate lever or blocking lever 7 mechanically converting the operator opening request can act on the sensor 8. For this purpose, the securing device 9, 10, 11 is equipped with an actuating pin 11. In the "unlocked" position of the securing device 9, 10, 11, the actuating pin 11 acts on the intermediate lever or blocking lever 7 in the case of an operator request in the direction of the arrow shown in the figures in the sense of an upward movement. As a result, the actuating pin 11 moves against the intermediate lever or blocking lever 7 and a blocking lug 7b, so that as a result of this movement of the intermediate lever or blocking lever. 7 is pivoted clockwise about its axis 2 and the sensor or switch 8 is actuated.

In this process, at the same time a blocking lug 7c of the intermediate lever or locking lever 7 is disengaged from the driven pulley 4. This allows the sensor or switch 8 to act on the opening drive 3, 4, which subsequently adjusts the driven pulley 4 in the counterclockwise direction as described, so that Subsequently, the lever 1 pivoted clockwise lifts the pawl from the ratchet. At the end the lock is open.

As long as the blocking lug 7c is in engagement with the driven pulley 4, such opening movements are not possible because the blocking lug 7c insofar blocks the driven pulley 4 in its movement. This ensures that not possible Fehlbestromungen of the opening drive 3, 4 lead to an unwanted opening of the locking mechanism or can lead.

The securing device 9, 10, 11 has a manual actuating element 9 in the form of a Betätigungsnuss 9. In addition, an actuating pin 11 supporting actuator 10 is realized, which is presently designed as a lock slider 10. The adjusting slide or the adjusting element 10 is pivotally connected to the actuating element or the operating nut 9.

In the position "unlocked" the securing device 9, 10, 11 or "child safety off" (see Figures 1 and 2), the blocking lever 7 is mechanically coupled to a handle, not shown, and / or an electric motor drive, also not shown. Both the handle and the electromotive drive reflect an operator opening desire in such a way that the actuating pin 11 of the securing device 9, 10, 11 in the direction indicated in the figures arrow direction in the sense of an upward movement is charged. For this purpose, the handle may work on the actuating pin 11 via corresponding adjusting elements. The same applies to the electromotive drive. As already described, this operator opening request in the "released" position of the safety device 9, 10, 11 or in the "child safety off" position of the child safety device 9, 10, 11 causes the actuation pin 11 acted upon in the sense of an upward movement Blocking lever 7 is pivoted clockwise about its axis 2. This leads to the operation of the sensor or switch 8 and to control the opening drive 3, 4 to open the locking mechanism.

In contrast, performs the handle or the electric motor drive in the "secured" position of the securing device 9, 10, 11 or in the position "child safety on" the child safety device (see Figures 3 and 4) a freewheeling relative to the blocking lever 7. Because corresponding Actuation of the actuating pin 11 in the sense of an upward movement lead in the accompanying figures 3 and 4 each to a freewheeling relative to the blocking lever 7. This can be attributed to the fact that in this process, the actuating pin 11 does not reach the operating lug 7b of the blocking lever 7 and passes thereto.

To the operating lever mechanism 6, 7 belongs in the context of the illustration not only the intermediate lever or blocking lever 7, but also the initially mentioned locking lever 6. In Figures 1 and 4, the locking lever 6 is in its "locked" position. In contrast, the position in Figures 2 and 3 corresponds to the position "unlocked" of the locking lever 6. In normal operation and the securing device 9, 10, 11 in the "unlocked" or "child safety off" position, the locking lever 6 consistently maintains its position " locked ". As a result, the already described unlocking of the opening drive 3, 4 realized. As long as the Safety device 9, 10, 11 their position "unlocked" or "child safety off" retains, the position of the locking lever 6 ("unlocked" or "locked") thus plays no role in the implementation of the operator opening request.

That is, the operator opening request is always mechanically implemented by means of the intermediate lever 7 when acted upon handle and / or actuated electric motor drive in a Gesperreöffnung as soon as the securing device 9, 10, 11 assumes its position "unlocked". This is independent of the position of the locking lever 6. This can be seen in a comparative consideration of Figures 1 and 2. Thereafter, the operator opening request reflective actuating pin 11 operates both in the "locked" position of the locking lever 6 on the operating lug 7b of the blocking lever 7 as well when the locking lever 6 according to the figure 2 assumes its position "unlocked". The decisive factor is that the securing device 9, 10, 11 occupies or has assumed its position "unlocked" in this context.

If, on the other hand, the securing device 9, 10, 11 is in its "secured" position or if the "child-proofing" position of the child-resistant device 9, 10, 11 is observed, then the actuating pin 11 continuously executes a freewheeling action relative to the actuating nose 7b of the blocking lever 7, regardless of the position of the locking lever 6. Because this is "unlocked" in the context of Figure 3 in its position, whereas the figure 4 corresponds to the position "locked" of the locking lever 6. In both cases, the position of the securing device 9, 10, 11 "secured" ensures that the actuating pin 11 passes by the operating lug 7b of the blocking lever 7, consequently the already mentioned freewheel is observed.

Claims

claims:

1. A motor vehicle door lock, with a locking mechanism, further with a working on the locking opening drive (3, 4) and an actuating lever mechanism (6, 7), further with at least one sensor (8) for querying an operator opening request, and with a security device (9, 10, 11), which prevents at least in their position "secured" an opening of the locking mechanism, characterized in that an operator opening request mechanically converting intermediate lever (7) of the actuating lever mechanism (6, 7) in accordance with the position of the securing device (9, 10, 11 ) the sensor (8) driving the opening drive (3, 4) is either acted on or not acted on.

2. Motor vehicle door lock according to claim 1, characterized in that the securing means (9, 10, 11) with an actuating pin (11) is equipped, which depending on their position ("unlocked" or "secured") the intermediate lever (7) at a Operator opening request for actuation of the sensor (8) acted on or compared to the intermediate lever (7) performs a freewheel.

3. Motor vehicle door lock according to claim 2, characterized in that the securing device (9, 10, 11) operates manually.

4. Motor vehicle door lock according to claim 3 or 4, characterized in that the securing device (9, 10, 11) has a manual actuating element (9) and an actuating pin (11) bearing adjusting element (10).

5. Motor vehicle door lock according to claim 4, characterized in that the actuating element (9) as an actuating nut (9) is formed and the adjusting element (10) is pivotally connected to the actuating element (9).

6. Motor vehicle door lock according to claim 4 or 5, characterized in that the adjusting element (10) is designed as a lock slider.

7. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the intermediate lever (7) as with the opening drive (3, 4) interacting blocking lever (7) is formed.

8. Motor vehicle door lock according to claim 7, characterized in that the blocking lever (7) in position "unlocked" the securing device (9, 10, 11) is mechanically coupled to a handle and / or an electric motor drive, whereas the handle and / or the electromotive drive in the "secured" position of the safety device (9, 10, 11) perform a freewheeling with respect to the blocking lever (7).

9. Motor vehicle door lock according to one of claims 1 to 8, characterized in that the securing means (9, 10, 11) as a child safety device (9, 10, 11) is formed.

10. Motor vehicle door lock according to one of claims 1 to 9, characterized in that in addition at least one locking lever (6) is provided as part of the actuating lever mechanism (6, 7).