WO2012163331A2

WO2012163331A2 - Motor vehicle door lock

Info

Publication number: WO2012163331A2
Application number: PCT/DE2012/000562
Authority: WO
Inventors: Frank Kunst; Madhu S. Basavarajappa
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2011-05-31
Filing date: 2012-05-26
Publication date: 2012-12-06
Also published as: EP2715019A2; DE202011101607U1; EP2715019B1; WO2012163331A3

Abstract

The invention relates to a motor vehicle door lock with a locking mechanism, a release lever (1) operating on the locking mechanism, at least one actuating lever (2), and with a securing element (6) which, with the interconnection of a transmission member (7, 8), interacts with the actuating lever (2) and, depending on the position of the securing element (6), brings the actuating lever (2) into engagement or out of engagement with the release lever (1), wherein the transmission member (7, 8) is designed in two parts, with a connecting lever (7) and a coupling lever (8) which is mounted on the actuating lever (2) so as to be rotatable about an axis (16), and, depending on the position of the securing element (6), the connecting lever (7) transfers the coupling lever (8) into the engagement position thereof with the release lever (1) or into the out of engagement position thereof with the release lever (1).

Description

Motor vehicle door lock

Description:

The invention relates to a motor vehicle door lock, with a locking mechanism, a working on the locking mechanism release lever, at least one actuating lever, and with a securing element which interacts with the intermediary of a transmission member with the actuating lever and the actuating lever depending on the position of the securing element in engagement or disengaged from the Release lever brings.

With the help of the security element, the motor vehicle door lock can consequently be transferred into a secured and unsecured position. In the "locked" position, the operating lever is disengaged from the release lever. In this case, the actuating lever against the release lever is empty and, for example, the acted upon by the release lever locking mechanism can not be opened. If, on the other hand, the securing element is in the "released" or "unsecured" or "unsecured" position, actions of the actuating lever indirectly or directly cause the triggering lever to work on the locking mechanism and to transfer or transfer it to an open position can. For this purpose, the release lever may lift a pawl from a catch as both components of the locking mechanism.

Typically, the securing element is a child-resistant element, although the invention is not limited thereto. In the case of a motor vehicle door lock of the structure described in the introduction according to DE 198 53 160 B4, the overall aim is to provide a control-engineering and structurally favorable design. In this context, a child safety device realized there has a rotary knob accessible from a side of the door rabbet. From the knob goes

a transmission rod. At the opposite end of the knob, the transmission rod is equipped with an eccentric. Turning the knob about 90 ° causes a plunger to be raised with the help of the eccentric. This activates the child safety lock or is in the "secured" state. An application in the opposite direction corresponds to the functional position "unlocked".

The recourse to the knob and the subsequent directly to the knob transmission rod leads to a relatively bulky structure, the assembly technical realization can cause problems. Because the rotary knob including transmission rod must be inserted into an opening in the door rebate and coupled with the other elements of the motor vehicle door lock. This is where the invention starts. The invention is based on the technical problem of further developing such a motor vehicle door lock that the assembly is simplified and a flexible attachment in or on a door easily succeeds.

To solve this technical problem, a generic motor vehicle door lock in the invention is characterized in that the transmission member between the securing element and the operating lever is formed in two parts with a connecting lever and a rotatably mounted about an axis on the operating lever clutch lever. Depending on the position of the securing element of the connecting lever transfers the clutch lever in its engaged position with the release lever or in its disengaged from the release lever.

For example, if the securing element is in the "secured" position, this position corresponds to the connecting lever engaging the coupling element.

has transferred lever in its disengaged division with the release lever or transferred. Since the clutch lever can not interact with the release lever, thus go movements of the operating lever relative to the release lever and consequently also the locking empty.

Conversely, the position "unlocked" of the securing element corresponds to the fact that the connecting lever has transferred or transferred the clutch lever into its engagement position with the release lever. Now, if the actuating lever is acted upon, the release lever can interact with the actuating lever by the engagement position of the clutch lever. As a result, the operating lever is able to open the locking mechanism on the release lever.

That is, the clutch lever mounted on the operation lever is engageable and disengaged from the release lever. Since the clutch lever logically generates a mechanical connection (engaged position) or just no connection (disengagement) with the release lever, explains the corresponding operation of the operating lever. Because the clutch lever is as it were between the operating lever and the release lever interposed (engaged position) or not (disengagement).

According to an advantageous embodiment, the connecting lever is a thrust lever. D. h., The connecting lever or thrust lever is applied by means of the securing element sliding and / or pulling in a predominantly linear direction. It has also proven itself, when the connecting lever engages at its one end in the securing element and interacts at its other end with the clutch lever.

The connecting lever is equipped for this purpose with a respective securing pin and a coupling pin, which engage in an associated securing recess or coupling recess. The securing recess is typically found on the securing element. In contrast, the coupling recess is formed on the clutch lever.

The clutch lever itself can basically take two different positions. At least one retracted position and one extended position of the clutch lever relative to the actuating lever are observed. In the retracted position of the clutch lever, the operating lever is disengaged from the release lever. In contrast, the extended position of the clutch lever corresponds to the actuating lever is in engagement with the release lever. In addition, the clutch lever is advantageously equipped with a stop. With the help of the stop the clutch lever is in its extended position on the actuating lever. This is additionally ensured by the coupling lever acting on the connecting lever in conjunction with the securing element. The operating lever as such is typically designed as a two-armed lever or three-armed lever. In this connection, the operating lever has at least one connecting arm and a triggering arm. The connecting arm can for example be connected to an external actuating element, with the aid of which the actuating lever experiences a desired loading. The actuating element may be an outside door handle, a door inside handle, etc.

An actuation of the actuating element causes the actuating lever is pivoted about an associated axis. This pivoting movement of the actuating lever is then brought into an opening movement of the actuating lever.

implemented when the operating lever engages or can come with the release lever. This is the case when the rotatably mounted on the actuating lever clutch lever is in its engaged position with the release lever.

In addition to the connecting arm, the operating lever - as already stated - has a release arm. The rotatably mounted on the operating lever clutch lever is generally disposed on this release arm. For this purpose, the release arm on the already mentioned axis or axis of rotation, opposite which the clutch lever is rotatably mounted on the actuating lever.

In addition, a spring is advantageously provided. The spring biases the operating lever in its undeflected position. In most cases, this one (single) spring is sufficient to ensure the functional safety of the entire described motor vehicle door lock and in particular the specially designed fuse. Ie. more springs are not required. For this purpose, the spring is advantageously designed as a leg spring with two legs. In this case, one leg is designed as an actuating leg and the other leg as a support leg.

The actuating leg may act on the actuating lever or rest on the actuating lever. In contrast, the support leg is typically supported on the housing. With the help of the spring or leg spring of the actuating lever is biased in its undeflected position. D. h., As soon as the actuating element acts via a connecting means or the like on the connecting arm of the actuating lever and this applied to the opening of the locking mechanism, the force of the spring in question must first be overcome. As soon as the actuation of the actuating element

omitted, said spring ensures that the operating lever assumes its rest position or undeflected position (again).

In addition to the one (single) spring already described, the securing element advantageously also has at least one position securing unit. With the help of this position assurance unit, the securing element is resiliently held in the respectively assumed position, for example "secured" or "unlocked". In other words, a change from one position to the other presupposes that the securing element works against spring forces built up by the position-securing unit.

In detail, the position assurance unit is equipped with one or more spring bars. Against the one or against the two spring bars is typically a securing web of the fuse element. With the help of the securing web and the two spring bars, between which the securing web is typically clamped, the position assurance unit can be designed to be bistable overall. That is to say, the combined action of the position assurance unit and the securing element ensures that the securing element occupies two stable positions, namely "secured" on the one hand and "unlocked" on the other hand. The change from one to the other stable position is only possible by overcoming corresponding (spring counter) forces on the part of the spring bars.

As a result, a motor vehicle door lock is provided, which convinces by a minimum of components and in particular requires only one (single) spring. In fact, the spring in question is sufficient to act on the operating lever in its undeflected position to provide proper functionality.

In addition to this one (single) spring, only the two spring bars of the position assurance unit for the securing element are added. However, these spring bars are not to be understood as externally mounted springs, but are typically and according to an advantageous embodiment in or on a housing of the motor vehicle door lock. That is, the spring bars in question are defined directly in the manufacture of the housing. The housing or a housing cover is generally made of plastic, so that can be easily defined and trained in the housing or housing cover the respective spring bars.

To the particularly simple installation of the motor vehicle door lock according to the invention or realized at this point special security element is accompanied by a particularly great flexibility in terms of design and possible installation situations. Because the division of the transmission link between the fuse element and the operating lever opens up a variety of installation options and also allows for revision work. Incidentally, can be used by this measure standardized components for example, the operating lever and the release lever. This makes it easy to distinguish between, for example, a motor vehicle door lock with the inventive design fuse element and such without the element in question, which can be used in the sense of a modular system on a variety of matching levers. The mentioned securing element is typically designed as a child-safety element and interacts in this case with an internal operating lever as an actuating lever. In fact, this internal operating lever, for example, in the position "secured" or "child safety on" ineffective switch. An action on the inside operating lever

via an internal door handle as an actuator is thus empty. Only when the child-safety element occupies the position "unlocked" or "child-safety off", the locking mechanism can be opened via the internal operating lever and an associated motor vehicle door can be opened. On the other hand, any external operating lever chain remains unaffected by the securing element or child-safety element.

That is, when the child safety device is inserted, the associated motor vehicle door, usually one of the rear side doors, can not be opened from the inside, but an opening from the outside is nevertheless possible. In contrast, the not inserted parental lock corresponds to the fact that the door in question can also be opened from the inside. This is the usual parental control function.

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 the motor vehicle door lock according to the invention in one

Overview, reduced to the elements essential to the invention,

Fig. 2 is a partial top view of individual parts of the motor vehicle door lock and

3A and 3B, the operation of the motor vehicle door lock in the function position "not secured" (FIG. 3A) or "secured"

(Fig. 3B).

In the figures, a motor vehicle door lock is shown, which with a not explicitly shown ratchet from a rotary latch and a related

menwirkenden pawl is equipped. On the locking mechanism operates a release lever 1. The release lever 1 is - as well as the locking mechanism - oriented predominantly perpendicular in comparison to the plane of FIG. 1. As usual, a rotational movement of the trigger lever 1 ensures that the pawl is lifted from the catch and release a previously captured by the catch latch bolt and consequently a motor vehicle door. This opening process is shown schematically in FIGS. 3A, 3B and it can be seen here how, in order to open the locking mechanism, the release lever 1 pivots (compare FIG. 3A).

For further basic construction of the motor vehicle door lock includes at least one actuating lever 2, which is formed in the example shown as an internal operating lever 2. The operating lever or inner operating lever 2 has a connecting arm 2a and a triggering arm 2b. In the example of FIG. 1, yet another arm of the actuating lever or the inner actuating lever 2 can be seen, which is irrelevant to the following considerations and therefore carries no reference numerals.

The connecting arm 2 a and consequently the actuating lever 2 is mechanically connected via a connecting means 3 to an actuating element 4. When the inner door handle 4 is applied, for example, pulling, the intermediate connecting means 3 ensures that the connecting arm 2a and consequently the actuating lever 2 a in Fig. 1 indicated by an arrow pulling action Experienced. As a result, the operating lever 2 rotates about its axis 5, in a counterclockwise direction, as indicated by an additional arrow in Fig. 1.

To further basic construction of the motor vehicle door lock includes a fuse element 6, which interacts with the interposition of a transmission member 7, 8 with the actuating lever 2. Depending on the position of the securing element 6, the actuating lever 2 is brought into engagement or out of engagement with the release lever 1. The various positions of the securing element 6 and the change from one to the other position by turning the securing element 6 about an associated axis 9 are shown in Fig. 1 by a double arrow. In fact, the "right" position of the securing element 6 corresponds to the fact that the securing element 6 is in the "unlocked" position. In this case, the actuating lever 2 is in engagement with the release lever 1. Thus, as soon as the inner door handle 4 is applied pulling, causes the rotation caused thereby by the Innenbetätigungshebels 2 about its axis 5 in the counterclockwise direction that the release lever 1 is acted upon by the actuating lever 2 and can also be applied. Following this, the locking mechanism is opened. This includes the sequence of functions in FIG. 3A.

By contrast, the "left" position of the securing element 6 in the sense of "secured" corresponds to the fact that the actuating lever 2 performs an empty movement relative to the triggering lever 1 when acted upon by the inner door handle 4. This is shown in FIG. 3B.

In the exemplary embodiment, the securing element 6 is a child-resistant element 6. It can be seen from FIG. 2 that the securing element or child-protection element 6 is equipped with a rotary knob 11 guided to the outside of a housing 10, a slot or the like. This knob 11 or a similarly acting slot is disposed in the region of a door rebate of an associated motor vehicle door and can

be applied manually from the outside in this way, as is generally known in parental controls.

In addition, the child safety element 6 has a securing web 12, which bears against a spring web 13 of the housing 10. In fact, two spring bars 13 are arranged at a distance from each other, which receive the securing web 12 between them. The securing web 12 of the securing element or child safety element 6 has in each case end tips 12 'which define two stable positions of the securing element 6 in conjunction with the spring webs 13, on the one hand the position "unlocked" and on the other hand the "secured" position, such as has already been explained with reference to FIG. 1. The securing element 6 is finally equipped with a securing recess 14. In the Sicherungsaus- recess 14 engages a securing pin 15 of the transmission member 7, 8 a.

In fact, the transmission member 7, 8 according to the invention designed in two parts. The transmission member 7, 8 consists of on the one hand a connecting lever 7 and on the other hand, a clutch lever 8 together. The clutch lever 8 is mounted on the actuating lever 2, namely rotatable about an axis 16. Referring to FIG. 1 it can be seen that the clutch lever 8 is arranged on the triggering arm 2b of the actuating lever 2. Depending on the position of the securing element or child safety element 6, the interacting with the securing element 6 connecting lever 7 transfers the clutch lever 8 in its engaged position with the release lever 1 or his Disengagement with the release lever 1. For this purpose, the connection lever 7 engages with the previously mentioned security pin

15 in the securing recess 14 of the securing element 6 a. Thus, as soon as the securing element 6 is pivoted, for example, from the "right" position shown in FIG. 1 ("unlocked") in the left position ("secured"), then the securing pin 15 located in the securing recess 14 ensures that in this case the connecting lever 7 "taken" is. In fact, the connecting lever 7 is a thrust lever 7, which performs predominantly linear and in Fig. 1 indicated by a double arrow movements. The linear displacement of the connecting lever 7 when changing the position of the securing element 6 is converted into a pivoting movement of the coupling lever 8. For this purpose, the connecting lever 7 engages with a coupling pin 17 in a coupling recess 18 of the coupling lever 8 a. Thus, as soon as the connecting lever 7 is entrained at the transition of the Sicherungsele- element 6 from the position "unlocked" in the "secured" position, at the same time engaging in the coupling recess 18 coupling pin 17 ensures that the clutch lever 8 from the position of FIG goes into the position shown in FIG. 3B. The clutch lever 8 is designed in the embodiment as Zweiarmhebel and has a coupling arm 8a and a stop arm 8b. The coupling arm 8a has the coupling recess 18. In contrast, the stop arm 8b interacts with the release lever 1, provided that the actuating lever 2 is in its engaged position with the release lever 1.

In fact, the clutch lever 8 can assume a retracted position and an extended position. In Fig. 1 and also in Fig. 3A, the extended position is shown. In this extended position of the clutch lever 8, the stop arm 8b takes a projecting and as it were

exposed position and can thereby interact with the release lever 1, as shown in FIG. 3A. For this purpose, the position "unlocked" corresponds to the securing element 6. If, however, the securing element 6 in the "secured" position, the clutch lever 8 assumes its retracted position, as shown in Fig. 3B. Then the stop arm 8b leaves its exposed position relative to the actuating lever 2 and is covered by the operating lever 2 as it were. This is shown in FIG. 3B. As a result, the stop arm 8b can not (more) interact with the release lever 1. The same applies to the actuating lever. 2

The clutch lever 8 is additionally equipped with a stop 19. If the clutch lever 8 is in its extended position and, accordingly, the securing element 6 assumes its "unlocked" position, the coupling pin 17 engaged in the coupling recess 18 on the connecting lever 7 ensures that the clutch lever 8 is pressed into contact with the actuating lever 2 and the stop 19 abuts on the actuating lever 2 (see Fig. 1).

In addition, you can still see a spring 20 which biases the operating lever 2 in its undeflected position. The undeflected position corresponds to a bias of the actuating lever 2 in the sense of a clockwise rotation about the axis 5. The spring 20 is designed as a leg spring with two legs 20a, 20b. The one leg 20a is formed as an actuating leg and acted upon for this purpose, the actuating lever 2. Actually, the actuating arm 20a is located on the connecting arm 2a of the actuating lever 2 at. The other leg 20b of

Spring or leg spring 20 is in contrast designed as a support leg 20b and is supported relative to the housing 10 from.

The already discussed spring bars 13 on the housing 10 in conjunction with the securing bar 12 on the securing element 6 as a whole define a position securing unit 12, 13 which ensures that the securing element or childproof element 6 occupies the two bistable positions "unlocked" and "secured" and can also take. A change from one position to another is possible only against the force of the spring of the individual spring bars 13.

Claims

claims;

1. Motor vehicle door lock, with

a locking mechanism, a release lever (1) operating on the locking mechanism,

- At least one actuating lever (2), and with a

Securing element (6) which interacts with the actuating lever (2) with the interposition of a transfer member (7, 8) and the actuating lever (2) depending on the position of the securing element (6) in engagement or disengagement with the release lever (1) brings, characterized in that

- The transmission member (7, 8) in two parts with a connecting lever (7) and a rotatably about an axis (16) on the actuating lever (2) mounted clutch lever (8) is formed, wherein - the connecting lever (7) depending on the position of the securing element (6) the clutch lever (8) in its engaged position with the release lever (1) or its disengagement division with the release lever (1) transferred.

2. Motor vehicle door lock according to claim 1, characterized in that the connecting lever (7) is designed as a push lever.

3. Motor vehicle door lock according to claim 1 or 2, characterized rlacc rli-> r

to Cainam a'man Cnrla in rl p Qi ^ l

(6) engages and interacts with the clutch lever (8) at its other end.

4. Motor vehicle door lock according to one of claims 1 to 3, characterized in that the connecting lever (7) are each equipped with a securing pin (15) and a coupling pin (17) in an associated securing recess (14) or coupling recess (18). intervention.

5. Motor vehicle door lock according to one of claims 1 to 4, characterized in that the coupling lever (8) assumes at least one retracted position and an extended position relative to the actuating lever (2).

6. Motor vehicle door lock according to claim 5, characterized in that the retracted position of the clutch lever (8) for disengagement of the operating lever (2) with the release lever (1) and the extended position of the clutch lever (8) for engagement position of the actuating lever (2) with the Release lever (1) corresponds.

7. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the coupling lever (8) has a stop (19) which rests in its extended position on the actuating lever (2).

8. Motor vehicle door lock according to one of claims 1 to 7, characterized in that the actuating lever (2) with at least one connecting arm (2a) and a release arm (2b) is equipped.

9. Motor vehicle door lock according to claim 8, characterized in that the connecting arm (2a) with, for example, an external actuating element (4) is connected.

10. Motor vehicle door lock according to one of claims 1 to 9, characterized in that the coupling lever (8) on the trigger arm (2b) is arranged.

11. Motor vehicle door lock according to one of claims 1 to 10, characterized in that a spring (20) is provided, which biases the actuating lever (2) in its undeflected position.

12. Motor vehicle door lock according to claim 11, characterized in that the spring (20) is designed as a leg spring with two legs (20a, 20b).

13. Motor vehicle door lock according to claim 11 or 12, characterized in that the one leg (20a) as the actuating arm (20a) and the other leg (20b) are designed as a support leg (20b).

14. Motor vehicle door lock according to claim 12 or 13, characterized in that the actuating limb (20a) on the actuating lever (2) engages, while the support leg (20b) on a housing (10) is supported.

15. Motor vehicle door lock according to one of claims 1 to 14, characterized in that the securing element (6) with at least one position assurance unit (12, 13) is equipped.