WO2009143799A1

WO2009143799A1 - Motor vehicle door lock

Info

Publication number: WO2009143799A1
Application number: PCT/DE2009/000572
Authority: WO
Inventors: Thorsten Bendel; Claus Töpfer; Winfried Schlabs
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2008-05-30
Filing date: 2009-04-24
Publication date: 2009-12-03
Also published as: EP2304138A1; CN102046906A; EP2304138B1; CN102046906B; JP2011522980A

Abstract

The invention relates to a motor vehicle door lock, comprising a locking mechanism (1, 2) and a closing/opening device (3 to 7) having a drive (3, 4, 5), wherein the closing/opening device (3 to 7) acts on the locking mechanism (1, 2) and the closing/opening device (3 to 7) comprises an interposed damping element (16).

Description

Kraftfahrzeugtürverschlus

Description:

The invention relates to a motor vehicle door lock, with a locking mechanism, and with a closing / opening device with drive, wherein the closing / opening device operates on the locking mechanism.

Zuzieh- / opening devices for motor vehicle door locks have been used mainly in high-priced cars. Reference is made in this context to EP 1 319 780 A1, in which care is taken by means of a conventional electric motor for a motor Zuziehung on a flap or door. That is, the locking mechanism is transferred after reaching a certain functional position, usually the Vorraststellung, in its end position or main rest position. As a result, a particularly convenient approach is achieved because an operator only has to spend the associated door or flap in the pre-locking position and then ensures the closing device for the complete closing operation.

In addition, but also known as opening aids that ensure that an associated locking the motor vehicle door lock is opened by a motor. An example of such an opening aid is described in DE 10 2004 052 599 A1. Here, too, the primary aim is to achieve greater comfort.

The known Zuzieh- / opening devices usually attack directly on the locking mechanism, which in turn is generally stored in a lock case of the motor vehicle door lock. Since the lock case is regularly bolted directly to an associated motor vehicle door, any noise from the drive of the closing / opening device on the motor vehicle door is usually transmitted by structure-borne noise. Since such a motor vehicle door regularly has more or less large cavities, There is a risk that the above-mentioned noises are amplified by any resonances. This is disadvantageous in that one usually wants to achieve increased ease of use with the closing / opening devices. However, if this ease of use is associated with an additional or disturbing noise level, this is classified by potential customers despite the achieved ease of operation as a total negative. This is where the invention starts.

The invention is based on the technical problem of further developing such a motor vehicle door lock in such a way that, with constant ease of use, an improvement in acoustics is achieved at the same time.

To solve this technical problem is provided in a generic motor vehicle door lock that the closing / opening device has an intermediate (acoustic) attenuator.

According to the invention, therefore, this damping element within the closing / opening device first of all ensures that an acoustic decoupling usually takes place between a mandatory motor of the closing / opening device and the other components. It has proved to be favorable when the attenuator is made predominantly of an elastomer or contains at least one such elastomeric plastic for acoustic decoupling.

In this context, it is also recommended if the said attenuator or the elastomer used at this point is or is designed so that in particular generated by the already mentioned engine respectively electric motor frequencies are effectively suppressed. For example, if said motor operates at 3000 revolutions per minute, this corresponds to a frequency of 50 Hz, which in the example case is particularly significant to dampen is. That is, the elastomer must be selected and designed so that, in particular, frequencies generated by the engine are effectively damped. Of course, other interpretations are conceivable.

In general, the design is such that the attenuator transmits rotational movements of the said motor of the drive to a downstream actuator. In this case, the transmission of rotational movements with the help of the attenuator can be done directly or indirectly. In the former case, the attenuator is advantageously integrated in a drive train of the engine. In the latter variant, the attenuator generally connects two components of the output train of the engine together.

In the case of integration of the attenuator in the output line of the engine and consequently the direct transmission of the rotational movements of the

Motor on the actuator, it is recommended that the attenuator than

Claw coupling is formed. This claw clutch sits in the

Generally of two equipped with claws respectively recordings

Coupling elements together, of which at least one is made of an elastomer. In the event that the attenuator combines two mostly separate components of the output train of the engine with each other and thus rotational movements of the engine in indirect

Way transfers to the downstream actuator, it has proved to be beneficial if the attenuator is designed as a drive belt. In general, the embodiments of belt and clutch as

Alternatives used. In principle, it is also conceivable, both

To combine configurations with each other.

For the drive, it has proven particularly useful if this is designed as a linear drive. In this case, the actuator is preferably around a linear actuator. In general, the drive is composed at least of the already mentioned motor or electric motor and the actuator or the linear actuator.

A particularly compact and functional embodiment is characterized in that the motor and the actuator are arranged at an angle, in particular at right angles, to one another. In this case, the output train of the engine or its output shaft usually has a non-rotatably connected worm, which in turn meshes with a worm wheel, which drives the actuator or linear actuator. Of course, it is conceivable and is within the scope of the invention to dispense with such an intermediate worm gear between the engine and the actuator.

The actuator or linear actuator is generally composed of a spindle and a spindle element. By rotating the spindle can be achieved that the spindle element located thereon is moved back and forth in the linear direction depending on the direction of rotation. This linear movement of the spindle element is now used for the closing / opening movement, as will be explained in more detail in the context of the description of the figures.

As a result, a motor vehicle door lock is provided, which is equipped with a closing / opening device, which not only allows comfortable operation of an associated motor vehicle door, but is also characterized by a particularly quiet operation. This is inventively achieved in that the closing / opening device is equipped with an intermediate attenuator of preferably an elastomeric plastic. Here are the main benefits. In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment; show it:

1 shows the motor vehicle door lock according to the invention in fragmentary fashion,

Fig. 2 shows the article of FIG. 1 in the installed position

Fig. 3 shows a first embodiment of the article according to FIGS. 1 and 2 with intermediate attenuator and

4 shows a variant of the attenuator according to FIG. 3.

In Fig. 2, a motor vehicle door lock is shown in the installed position, which is equipped as usual with a locking mechanism 1, 2 of rotary latch 1 and associated pawl 2. The locking mechanism 1, 2 is associated with a closing / opening device 3 to 7, which in the present case is configured as a closing aid 3 to 7 and operates on the locking mechanism 1, 2 in a pulling-in sense.

For this purpose, the closing / opening device or closing aid 3 to 7 has a drive 3, 4, 5, which in the exemplary embodiment is designed as a linear drive 3, 4, 5. In this case, the linear drive 3, 4, 5 is composed essentially of a motor 3a with output shaft 3b and a linear actuator 4, 5 acted upon by this. In the context of the exemplary embodiment and not restricting, the linear drive 3, 4, 5 between the motor 3a and the linear actuator 4, 5 in addition to an intermediate gear 3c, 3d configured in the embodiment as a worm gear 3c, 3d is. The motor 3a including the output shaft 3b and the gear 3c, 3d form taken together a motor drive 3, which acts on the linear actuator 4, 5 rotating.

The linear actuator 4, 5 is in turn composed of a spindle 5 and a linearly reciprocating on the spindle 5 spindle element 4. In the present case, the spindle 5 is a threaded spindle 5, whereas the spindle element 4 is designed as a spindle nut 4.

Overall, the linear drive 3, 4, 5 works indirectly or directly on a closing / opening element 7, which is designed as a closing pawl 7 in the embodiment, which engages in a contour 8 of the locking mechanism 1, 2. In the present case, the contour 8 is formed on the outside of the rotary latch 1, so that the closing pawl 7 interacts with the contour 8 in question on the rotary latch 1.

For the basic structure is still a lever 6, with the help of the linear drive 3, 4, 5 works on the closing / opening element or the closing pawl 7. Consequently, the closing / opening device or closing aid 3 to 7 consists of the linear drive 3, 4, 5, the lever 6 and finally the closing pawl 7 together. The linear drive 3, 4, 5 summarizes in turn the motor drive 3 and the linear actuator 4, 5 together.

In the exemplary embodiment, the lever 6 has two lever parts 6a, 6b. In this case, a lever part 6a is formed as a spindle lever part 6a and pivotally connected to the spindle element or the spindle nut 4. The other lever part 6b, however, is designed as a pawl lever part 6b and on the one hand mounted coaxially to the rotary latch 1 and on the other hand pivotally connected to the closing / opening element respectively the closing pawl 7 in the example.

Finally, one recognizes in FIG. 1 two position sensors 9, which are triggered by means of a stylus 10 on the spindle nut 4 and thus, for example, via a control unit, not shown, stop the motor 3a or reverse in its direction. Because in the motor respectively electric motor 3a is a running in both directions small-sized electric motor 3a. In addition, yet to be recognized Endlagerpuffer 11 ensure that the spindle 5 and the spindle member or the spindle nut 4 can be reciprocated only within the predetermined by the Endlagerpuffern 11 travel in the linear direction L.

The operation is as follows. In order to transfer the catch 1 of the so-called Vorraststeilung shown in Fig. 2 with a pre-catch 12 ratchet pawl 2 in the main position, in which the pawl 2 is incident in a main catch 13 on the catch 1, it is necessary that in the Contour 8 of the catch 1 engaging Zuziehklinke 7 rotates the catch 1 in the example in the counterclockwise direction, as indicated by a movement arrow in Fig. 2. This is achieved by the invention in that the spindle element or the spindle nut 4 is moved in the illustration of FIG. 2 to the left. For this purpose, the motor or electric motor 3a must put the spindle or threaded spindle 5 in the corresponding rotation. For this purpose, the output shaft 3b of the motor 3a has a worm 3c meshing with a worm wheel 3d of the worm gear 3c, 3d. The worm wheel 3d is arranged coaxially to the spindle 5 and rotatably connected thereto.

Consequently, rotations of the worm gear 3d directly lead to the spindle 5 also executing rotations. As a result, this moves

Spindle element or the spindle nut 4 in the linear direction L or depending on

Turning direction of the electric motor 3a with a view to the Fig. 2 to the left, so that as a result of the catch 1 performs the desired Gegenuhrzeigersinnbe- movement. Because in the migration of the spindle nut 4 to the left lever 6 follows this movement, which causes the ratchet lever part 6b a Counterclockwise rotation completed because it is coaxially fixed to the catch 1 with its one end practically on a lock case 14, whereas the spindle lever part 6a and the spindle nut 4 is moved to the left. Since the closing pawl 7 is connected at this other end or in a common pivot point 15 articulated to the pawl lever part 6b, also performs the Zuziehklinke 7 the desired counterclockwise movement, which follows the catch 1, because the Zuziehklinke 7 in the contour 8 on the catch 1 intervenes.

It can be seen that the linear actuator 4, 5 and the motor 3a are arranged at an angle to each other, wherein in the embodiment, both the motor 3a and the linear actuator 4, 5 are connected to the lock case 14 and connected thereto. It is also possible in principle to place the linear drive 3, 4, 5 in total separately from the lock case 14 and to this extent define a separate module for this purpose. The connection between the linear drive 3, 4, 5 and the ratchet 1, 2 or the lever 6 realized at this point unchanged may in this case ensure a transmission element, which is advantageously a Bowden cable or the like. This Bowden may like to attack instead of the spindle nut 4 to the spindle lever part 6a. This is not shown. Likewise not shown is the basic possibility, with the help of the motor 3a not the spindle 5, but rather to drive the spindle element 4.

According to the invention, the closing / opening device 3 to 7 according to FIGS. 1 and 2 respectively has an intermediate attenuator respectively a coupling 16. FIGS. 3 and 4 now show different views

Embodiments of this attenuator or the clutch 16. Allen

Variants is common that the attenuator 16 consists mainly of a

Elastomer or an elastomeric plastic is made. In this case, the attenuator 16 is usually designed so that primarily from the engine respectively electric motor 3a resonances are attenuated, as has already been described in the introduction.

In any case, the attenuator 16 ensures that rotational movements of the motor 3a to the downstream actuator 4, 5 and linear actuator 4,

5 are transmitted. This can be done in a direct way according to the variant of FIG. 3 by the attenuator 16 in a drive train of the

Motors 3a is integrated. Alternatively, however, is also an indirect

Transmission of the rotational movements conceivable, as shown in FIG. 4. In this case, the attenuator 16 connects two locally separate components of the output train of the motor 3a.

In the event that the damping member 16 is integrated into the output line of the motor 3a, it is recommended to design the damping member 16 as shown in Fig. 3 as a dog clutch 16a, 16b. In fact, this dog clutch 16a, 16b has at least two coupling elements 16a, 16b, which mutually engage with each axially upstanding jaws and corresponding receptacles. At least one of the two coupling elements 16a, 16b is made of said elastomer. Incidentally, the output shaft 3b of the motor 3a is divided into two, with the one coupling element 16a connected to one end and the other coupling element 16b to the other end. Both ends are arranged coaxially with each other. As already described, ensures the unchanged realized worm gear 3c, 3d ensure that the (damped) rotational movements of the motor 3a are transmitted to the actuator or linear actuator 4, 5.

In the context of the variant of FIG. 4 with the indirect transmission of

Rotary movement, the attenuator 16 is formed as a drive belt 16. In this case, the output shaft 3b of the motor 3a is again formed in two parts, each end pulley 17 of the locally separated parts by the drive belt 16 and the attenuator 16 are interconnected. In this way, the rotational movements of the motor 3a (damping) on the worm 3c and finally the worm wheel 3d and subsequently the actuator 4, 5 are transmitted again. Finally, it can still be seen that the motor 3a and the actuator 4, 5 are arranged at right angles to each other at an angle, according to the embodiment of FIGS. 1 to 4, which necessitates a particularly compact variant. In addition, the attenuator 16 allows the addressed angle to be changed easily if necessary.

Not shown is the possibility of integrally forming individual components of the closing / opening device 3 to 7. Thus, the lever 6, the spindle element 4 and optionally the closing / opening element 7 can be made entirely or partially in one piece.

Claims

claims:

1. Motor vehicle door lock, with a locking mechanism (1, 2), and with a closing / opening device (3 to 7) with drive (3, 4, 5), wherein the closing / opening means (3 to 7) on the locking mechanism ( 1, 2), characterized in that the closing / opening means (3 to 7) comprises an intermediate attenuator (16).

2. Motor vehicle door lock according to claim 1, characterized in that the damping member (16) is made predominantly of an elastomer.

3. Motor vehicle door lock according to claim 1 or 2, characterized in that the damping member (16) rotational movements of a motor (3a) of the drive (3, 4, 5) to a downstream actuator (4, 5) transmits.

4. Motor vehicle door lock according to one of claims 1 to 3, characterized in that the damping member (16) as a drive belt (16) and / or dog clutch (16a, 16b) is formed.

5. Motor vehicle door lock according to one of claims 1 to 4, characterized in that the damping member (16) in an output line of the motor (3a) is integrated.

6. Motor vehicle door lock according to one of claims 1 to 5, characterized in that the attenuator (16) has two components of the

Output train of the engine (3a) connects to each other.

7. Motor vehicle door lock according to one of claims 1 to 6, characterized in that the drive (3, 4, 5) as a linear drive (3, 4, 5) is formed.

8. Motor vehicle door lock according to one of claims 1 to 7, characterized in that the drive (3, 4, 5) from at least the motor (3a) and the actuator (4, 5) composed.

9. Motor vehicle door lock according to one of claims 1 to 8, characterized in that the motor (3a) and the actuator (4, 5) are arranged at an angle, in particular at right angles to each other.

10. Motor vehicle door lock according to one of claims 1 to 9, characterized in that the actuator (4, 5) as a linear actuator (4, 5) is formed and a spindle (5) and a spindle element (4).