WO2004109048A1

WO2004109048A1 - Combined drive unit for at least one device and a door lock

Info

Publication number: WO2004109048A1
Application number: PCT/DE2004/000912
Authority: WO
Inventors: Johannes-Theodor Menke; Gerhard Zimmermann; Uwe Reddmann; Wilfiried Ostermann; Holger Schiffer; Stefan Armbruster; Christian Jokiel; Jürgen Kill; Stephan Oberle
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2003-05-21
Filing date: 2004-04-30
Publication date: 2004-12-16
Also published as: EP1625272A1; DE20307885U1; DE112004001380D2

Abstract

The invention relates to a combined drive unit for at least one device (1) for example a window winding device (1) and a door lock (2) of a vehicle. The inventive combined drive unit comprises a common motor (3) which actuates the device (1) and/ or the lock (2) and is permanently connected thereto by means of a connection unit (4) provided with at least one traction blocking unit (5). Said connection unit (4) connects connection lines (6, 7, 9; 6, 8, 10) in the direction of the device (1) and the lock (2) to the motor (3), said connection lines (6, 7, 9; 6, 8, 10) being activated and/or deactivated with the aid of the traction blocking unit (5).

Description

Combined drive unit for at least one unit and a door lock

Description :

The invention relates to a combined drive unit for at least one unit, for. B. window lifting device, and a door lock in a motor vehicle door, with a common motor to act on the unit and / or the door lock.

A combined drive unit of the design described in the introduction is dealt with in DE 197 55 942 C2. Here, a switchover clutch is used for the optional coupling of a drive motor into the drive train of the window lifting mechanism or the drive train of the closing mechanism. The changeover clutch is therefore in the drive train or is part of the drive train.

This is done in such a way that one of the

Drive motor outgoing drive worm is in engagement with a gear wheel which has driven wheels on both sides. A switching shaft of an electrically switchable solenoid runs coaxially through the interior of a hub of the gear wheel. The selector shaft forms the armature of the solenoid and can be moved axially, so that either one or the other driven wheel is acted on. This is complex and not always free of malfunctions, because the changeover clutch or the armature of the lifting magnet is moved back and forth between the two drive trains.

In addition, one knows basically change gear, as they are the subject of DE 101 25 747 AI. Such change gearboxes are used to transmit the driving force from one Adjustment drive via a coupling element on one of two drive elements, each of which is assigned to an adjustment device in motor vehicles. The axes of the adjusting drive and the drive elements are arranged coaxially to one another. The coupling element coupled to the adjustment drive can be displaced radially by means of a changeover device and can be brought into engagement with one of the two drive elements in a non-positive and / or positive manner.

DE 36 34 020 Cl deals with an adjustment gear in a motor vehicle. This may be used for a motorized seat adjustment, a backrest tilt adjustment or a window regulator.

Furthermore, known from DE 199 44 915 AI a drive for adjusting devices in motor vehicles, in particular window regulators. Here, a motor and a gear transmission coupled to the motor are provided, which has an internally toothed ring gear as the drive element. DE 299 24 088 Ul operates in a similar manner.

The invention is based on the technical problem of further developing a drive unit of the design described at the outset in such a way that, with a simple and, in particular, inexpensive construction, there is also great functional reliability.

In order to solve this technical problem, the invention proposes, in the case of a combined drive unit of the embodiment described at the outset, that the motor with the door lock and the unit are permanently mechanically coupled to at least one traction lock via a connection unit, the connection unit connecting the respective connecting strands to the unit on the one hand and to the motor on the other hand, and the connecting strands being activated and / or deactivated in each case with the aid of the traction lock ,

The connecting line to the unit can be designed to be self-locking. The connection unit preferably has a gear, in particular a planetary gear, although other embodiments are also conceivable and included. The theory of the invention of course grants the possibility of activating both connecting strands simultaneously. Simultaneous deactivation is also possible. For the most part, however, one will ensure an optional operation.

As a rule, there are at least two braking elements as traction locks, which block the respective connecting strand in a form-fitting and / or non-positive manner. In detail, this may be such that the two brake elements are acted upon by a common servomotor and alternately fix the respective connecting strands. The servomotor receives corresponding control commands from a control unit which implements the respective command, either "operate window lifting device or unit".

Specifically, the respective connecting strand mainly has at least one brake element that moves along, which is a brake disc or disc, a cone, may act a pin, a socket or the like. If necessary, this braking element is blocked by a fixed counter-braking element. The counter-braking element is also a brake disc or disc, a cone, a pin, a socket, etc., which is pressed onto the moving brake element of the respective connecting line, with the aid of the servomotor described above and thus blocks the connecting line in question ,

Due to the fact that a braking element is provided on the connecting line to the unit or the window lifting device, which interacts with a fixed or stationary counter-braking element for fixing the unit when it is not loaded, the unit or the window lifting device can be designed to be self-locking. This leads to cost advantages.

Because the self-locking is usually ensured at this point with the help of special worm gears or comparable translation elements. This is necessary in order to avoid unintentional or violent opening of window panes that are actuated by the window drive. Because the self-locking ensures that when the drive or motor for the window lifting device is not acted on, the window pane can only be moved against the self-locking forces to be overcome. Such requirements are even mandatory.

In the context of the present invention, such cost-intensive measures can now be taken to represent self-locking be waived. For this self-locking, when the unit or the window lifting device and thus the engine are at a standstill, the already existing traction lock or the braking elements implemented at this point are used. These are influenced with the help of the servomotor so that a window pane connected to the window lifting device experiences the desired blockage. In this case it would basically be possible for the motor to act on the door lock because the connecting line leading there is released. In addition, configurations are naturally also conceivable in which the one or more traction locks ensure that both connecting strands are blocked at the same time.

In the case of alternate operation, one could think of switching off the power to the motor for the time the self-locking achieved with the traction lock so that unintentional movements of the door lock are excluded.

As a result, a combined drive unit is made available, in which a mechanical connection unit with respective connection lines ensures a continuous mechanical connection from the common motor on the one hand to the unit and on the other hand to the door lock. In contrast to the teaching according to DE 197 55 942 C2, there is a mechanical permanent connection of both the unit or the window lifting device and the door lock to the common motor. It has also proven to be advantageous that the one or more traction locks can automatically ensure the required self-locking in the unit or the window lifting device. This leads to cost savings. At the same time, the design effort is reduced. This is where the main advantages can be seen. The invention is explained in more detail below on the basis of a drawing illustrating only one exemplary embodiment; show it:

1 an overview of a combined drive unit according to the invention,

2 shows a section through the planetary gear,

3 shows the drive unit with the essential components schematically,

4a, 4b different designs of the braking elements.

The figures show a combined drive unit for at least one unit 1, in the exemplary embodiment a window lifting device 1, and a door lock 2 in a motor vehicle door, not shown. Within the scope of the exemplary embodiment, this combined drive unit additionally has a connection unit 4 with at least one traction lock 5 for selectively loading the unit 1 or the door lock 2 with a common motor 3. The connection unit 4 forms together with the traction lock in the illustration 5 essentially a switching device 4, 5, but this is not mandatory.

In this switching device 4, 5 is located in the framework of the invention measures the mechanical connecting unit 4, whose two outputs 7, 8 can be selectively acted upon by the aid of the traction lock 5 (see FIG. ^'Fig. 3). In fact, the switching device 4, 5 couples the unit 1 and the door lock 2 to the motor 3 permanently mechanically. The motor 3 is coupled to the unit 1 with the interposition of the mechanical connection unit 4 in connection with the traction lock 5 via a connecting line 6, 7, 9. In contrast, the door lock 2 is connected to the motor 3 via a connecting line 6, 8, 10 with the connection unit 4 interposed.

Both connecting strands 6, 7, 9 on the one hand and 6, 8, 10 on the other hand proceed from the mechanical connecting unit 4 or are combined in the mechanical connecting unit 4, so that the common motor 3 on the two connecting strands 6, 7, 9 on the one hand and 6, 8, 10 to another can work. Whether the door lock 2 or the unit 1 is now driven by the common motor 3 is decided on the basis of the position of the traction lock 5, as will be explained in more detail below.

In the context of the exemplary embodiment, the connection unit 4 is designed as a planetary gear 4. This planetary gear 4 has a sun gear with sun gear shaft 6, a planet gear carrier with planet gear carrier shaft or Web shaft 7 and a ring gear 8, as the sectional view in Fig. 2 immediately makes clear.

The common motor 3 works on the sun gear shaft 6. The ring gear 8 is connected to a worm shaft 10, which rotates a worm gear 11 clockwise or counterclockwise, as indicated in FIG. 1 by a double arrow. As a result, a rotary latch connected to the worm wheel 11 can be moved, so that the associated door lock 2 closes the motor vehicle door. It is also possible that the worm wheel 11 is connected to a pawl for the rotary latch, so that this pawl can be lifted out in the sense of an electrical opening, as was described in detail at the beginning. Of course, other functions of the door lock 2 can also be realized with the help of the worm wheel 11, for example a child lock or theft protection.

The planet gear carrier or the planet gear carrier shaft or web shaft 7 is connected to a further worm 9, which rotates a cable drum 12 of the window lifting device 1. The unit 1 is thus designed in the exemplary embodiment as a window lifting device 1. Rotations of the associated cable drum 12 are directly converted into lifting and lowering movements of a window pane, not shown, via a cable wound on the cable drum 12.

It can be seen that the web shaft 7 is arranged in the axial extension of the sun gear shaft 6 and the worm 10 for the worm wheel 11 penetrates as well as the traction lock 5. On the other hand, the ring gear 8 works on the worm 10 via a hollow shaft 8 'which accommodates the shaft shaft 7 in its interior. In principle, the two worms 9, 10 and the common motor 3 can also work on other than that shown rotating elements 6, 7 and 8 of the connecting unit 4 are connected.

In the context of the exemplary embodiment, however, the common motor 3 works on the sun gear shaft 6, which sets the planet gear carrier and consequently the web shaft 7 in rotation when the ring gear 8 is fixed. As a result, the screw 9 and consequently the cable drum 12 also rotates, so that the window lifter or the window lifting device 1 or the unit 1 performs the required movements. That is the normal case. In this functional position, the traction lock 5 consequently blocks the ring gear 8 or the ring gear shaft 8 ′ connected to it.

This happens in detail in such a way that, as it were, four

Brake elements 14, 15, 16, 17 are provided, which positively and / or non-positively connect the respective connecting line 6,

Block 7, 9 or 6, 8, 10. The two brake elements or counter-brake elements 16, 17 can be acted upon by a common servomotor 13 and alternately connected to the respective connecting line 6, 7, 9 or 6, 8, 10 or the moving brake elements 14, 15.

In fact, each connector string has 6, 7, 9, and 6,

8, 10 via an associated brake element 14, 15 which with is moved. The brake element 14, 15 in the context of the exemplary embodiment according to FIG. 1 is a brake disc, the brake disc 14 being coupled to the connecting line 6, 8, 10, while the brake disc 15 is connected to the connecting line 6, 7, 9 is connected.

In addition to brake disks 14, 15 and counter-brake disks 16, 17 according to FIG. 1, interlocking cones can also be used as brake elements 14, 15, 16, 17 according to FIG. 4a. Corresponding pins and bushings are equally conceivable, which are shown in FIG. 4b and represent positive-locking brake elements 14, 15, 16, 17. In fact, when a bush is axially acted upon as a counter-braking element 16, a brake pin as the braking element 14 plunges into it and is thereby fixed. The brake pin is rotatably mounted about its axis against spring force in a holding bush so that the two brake elements 14, 16 are synchronized with one another during engagement. The same applies to mirror elements 15, 17 which are arranged in a mirror image and have the same structure but are not shown.

The counter-braking elements 16, 17 are assigned to both braking elements or brake disks 14, 15 according to FIG. 1. The two counter-braking elements 16, 17 together with a receptacle 18 for a swivel lever 19 form a brake body 16, 17, 18. The counter-braking elements 16, 17 are arranged concentrically with a continuous drive axle, namely the connecting strand 6, 7, 9. The same applies to the brake elements 14, 15. The pivot lever 19 can be pivoted via a worm 20 with the aid of the servomotor 13 into the positions indicated by dash-dotted lines. As a result, the brake body 16, 17, 18 is adjusted linearly in relation to the drive axis or to the respective connecting strands 6, 7, 9 and 6, 8, 10, as is indicated by a double arrow in FIG. 1. In the left stop position, in which the counter-braking element 16 blocks the braking element 14, the ring gear 8 of the planetary gear 4 is consequently fixed, so that the worm wheel 11 cannot move. This is the normal division in which the common motor 3 only acts on the cable drum 12 for the window lifting device 1 via the connecting line 6, 7, 9.

However, if the servomotor 13 receives a signal from a control system (not shown) that the door lock 2 is to be opened or closed electrically, the servomotor 13 moves the brake body 16, 17, 18 into the right stop position, so that the counter-braking element 17 comes into engagement with the braking element 15 and the connection of the counter-braking element 16 to the braking element 14 is released. Consequently, when the common motor 3 or the sun gear shaft 6 driven by it rotates, the ring gear 8 can now move freely, whereas the planet gear carrier and with it the web shaft 7 experiences a blockage. As a result, the cable drum 12 is fixed, rather the worm disk 11 is able to rotate, both clockwise and counterclockwise - depending on the direction of rotation of the motor 3 or the sun gear shaft 6. The cable drum 12 is driven with gear ratios by the common motor 3 of approximately 1:60 to 1:80 in order to be able to provide the necessary actuation forces for a connected window pane. In contrast, the worm disk 11 experiences gear ratios from 1:50 to 1:70 in order to be able to effect the electrical opening or closing.

It is particularly important that the connecting line 6, 7, 9 to the unit 1 or the window lifting device 1 is designed to be self-locking. This means that no specially designed screw 9 or transmission elements to the cable drum 12 are used at this point that have an inhibiting effect. Rather, the braking element 15 and the counter-braking element 17 ensure that the cable drum 12 and consequently the unit 1 and thus the connecting line 6, 7, 9 are blocked when the window lifting device 1 is at a standstill. This takes place within the scope of the exemplary embodiment, in which, when the window lifting device 1 is at a standstill, the servomotor 13 for the installation of the counter-braking element

17 on the braking element 15. In this context or in this functional position, a control unit or control system, which is not expressly shown, ensures that the motor 3 is switched off or that the door lock 2 is not acted upon unintentionally.

The control system can distinguish this self-locking state from the functional position in which the door lock 2 is to be acted upon by the motor 3. In this case, a mostly triggered operating lever on door lock 2 or the vehicle door ensures that the command "Actuate door lock 2" or "electrically open" or "electrically close" etc. is recognized. If this command is omitted or the actuating lever is not acted on, the motor 3 maintains its de-energized state during the self-locking described.

Claims

Protection claims:

1. Combined drive unit for at least one unit (1), for. B. window lifting device (1), and a door lock (2) in a motor vehicle door, with a common motor (3) to act on the unit (1) and / or the door lock (2), characterized in that the motor (3) with the The door lock (2) and the unit (1) are permanently mechanically coupled to at least one traction lock (5) via a connecting unit (4), the connecting unit (4) connecting lines (6, 7, 9; 6, 8, 10) ) connects on the one hand to the unit (1) and on the other hand to the door lock (2) with the motor (3), and the connecting strands (6, 7, 9; 6, 8, 10) are each activated with the help of the traction lock (5) and / or be deactivated.

^• 2. Drive unit according to claim 1, characterized in that the connecting strand (6, 7, 9) to the unit (1) is designed to be self-locking.

3. Drive unit according to claim 1 or 2, characterized in that at least two brake elements (14, 16; 15, 17) are provided as a traction lock (5), the two brake elements (14, 16; 15, 17) non-positively Block the respective connecting line (6, 7, 9; 6, 8, 10).

4. Drive unit according to one of claims 1 to 3, characterized in that both braking elements (14, 16;

15, 17) are acted upon by a common servomotor (13) and alternately block the respective connecting strands (6, 7, 9; 6, 8, 10).

5. Drive unit according to one of claims 1 to 4, characterized in that the respective connecting strand (6, 7, 9; 6, 8, 10) has at least one moving braking element (14, 15) which is provided by a fixed counter-braking element ( 16, 17) is blocked if necessary.

6. Drive unit according to one of claims 1 to 5, characterized in that the braking elements (14, 16; 15, 17) are positively and / or non-positively interlocking disks, cones, pins and bushings etc. are used.