WO2004055310A1

WO2004055310A1 - Combined drive unit for at least one assembly and a door lock in a motor vehicle door

Info

Publication number: WO2004055310A1
Application number: PCT/DE2003/003969
Authority: WO
Inventors: Johannes-Theodor Menke; Gerhard Zimmermann; Uwe Reddmann; Wilfried Ostermann; Holger Schiffer; Stefan Armbruster; Christian Jokiel; Jürgen Kill
Original assignee: Kiekert Aktiengesellschaft
Priority date: 2002-12-14
Filing date: 2003-12-01
Publication date: 2004-07-01
Also published as: DE10394156D2; DE50312435D1; EP1570148B1; AU2003298054A1; EP1570148A1; DE10258566A1

Abstract

The invention relates to a combined drive unit for at least one assembly (1), e.g. a window lift device (1) and a door lock (2) in a motor vehicle door. The drive unit comprises a common motor (3) for impinging the assembly (1) and/or the door lock (2). According to the invention, the motor (3) is mechanically coupled to the door lock (2) and the assembly (1) in a permanent manner by means of a connection unit (4) comprising at least one traction lock (5). The connection unit (4) links respective connection phases (6, 7, 9; 6, 8, 10) running either to the assembly (1) or to the door lock (2) with the motor. Said connection phases (6, 7, 9; 6, 8, 10) are respectively activated and/or deactivated with the aid of the traction lock (5).

Description

Combined drive unit for at least one unit and a door lock in a motor vehicle door

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 changeover 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.

In detail, this is accomplished in such a way that a drive worm originating from the drive motor is in engagement with a gearwheel which has driven wheels on both sides. A switching shaft of an electrically switchable solenoid runs coaxially through the inside 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-over 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 adjusting device in motor vehicles. The axes of the adjustment drive and the drive elements are arranged coaxially to one another. The coupling element coupled to the adjustment drive can be moved radially by means of a switching 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 ül operates in a similar way.

The invention is based on the technical problem of developing a drive unit of the above-described configuration, so on that is given tion security with a simple design large wireless ^¬.

To solve this technical problem, the

Invention with a combined drive unit of the embodiment described in the introduction that the motor with the door lock and the unit is permanently connected coupling unit is mechanically coupled to at least one traction lock, the connection unit connecting the respective connecting strands to the unit on the one hand and to the door lock on the other hand with the motor, and wherein the connecting strands are each optionally activated and / or deactivated with the aid of the traction lock. In principle, the traction lock may ensure that one or both connecting strands are blocked. However, it is also possible for both connecting strands to be acted upon by the motor at the same time, that is to say that they are not blocked. As a rule, however, there is an alternative operation of the two (or more) connecting strands. The connection unit preferably has a gear, in particular a planetary gear, although other embodiments are also conceivable and included.

In the simplest case, the connecting unit may have two connecting shafts as connecting strands which are activated or deactivated with the aid of assigned traction locks. It is conceivable to alternately block the connecting shaft from the common motor to the unit and to the door lock. Other connecting elements, such as. B. timing belts or gear connections are conceivable as connecting strands and are encompassed by the inventive concept. As a result, the traction lock acts like a brake.

As a rule, however, a planetary gear is used, the unit being connected to a planet gear carrier and the door lock to a ring gear of the gear, or vice versa. A combination Nation includes the concept of the invention, in which the unit is connected to a ring gear and the door lock to a sun gear, or vice versa. This means that the unit, the door lock and the motor can each be optionally connected to the rotating components of the planetary gear, namely the ring gear, planet gear carrier and sun gear, with one or more assigned traction locks ensuring that only one connecting strand on the output side either is active towards the unit or the door lock.

As a rule, there are at least two braking elements as traction locks, which block the respective connecting line 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. This servomotor generally receives corresponding control commands from a control unit which implements the respective command, either "operate window lifting device or unit".

The invention is based on the knowledge that, for example, the lock function "electrical opening" (cf. DE 196 50 826 AI) and / or the exercise of a closing function according to DE 199 42 360 AI as well as the insertion of the lock function anti-theft device and / or Childproof lock should always be used only when there is no need to operate the unit, especially the window lifting device. The application of the unit and the door lock with the common motor results So not in comfort restrictions, since the operations described are usually carried out only as an alternative, so that the common motor can be used for both basic drive tasks.

Specifically, the respective connecting line mainly has at least one brake element that moves along, which may be a brake disk or disk, a cone, a pin, a bushing or the like. If necessary, this braking element is blocked by a fixed counter-braking element. This 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 previously described servomotor and so on blocked connecting line concerned.

For this purpose, a brake body as a whole may be implemented, which can be moved back and forth between the respective brake elements of the connecting strands with the aid of the servomotor and has the two counter-brake elements. Of course, completely different traction locks are also conceivable and are included. Thus, the brake elements designed as brake disks on the respective connecting strands may be blocked with the aid of disk brakes, which apply the associated brake pads to the brake elements. Eddy current brakes are also conceivable.

Usually, however, one will go for cost reasons as before ^¬ that the two counter braking elements of the Community seed brake body are worn, which is located between the two brake elements on the connecting strands. The two moving brake elements and the counter-brake elements are arranged concentrically to a continuous drive axis for the unit or for the door lock in order to keep the space requirement as small as possible.

It has also proven to be advantageous if the two drive trains are collinear, i. H. temporarily or parallel to each other, are arranged with different working lengths. The drive trains run in the same direction parallel to each other and / or as it were congruent, so that the available space is used optimally. This also gives the option of placing the unit and the door lock in the axial extension of the connecting unit, one behind the other, side by side or at an angle to one another.

As a result, a combined drive unit is made available, in which a mechanical connection unit with respective connecting strands 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. There is therefore a mechanical permanent connection of both the unit and the door lock to the common motor, which is in contrast to DE 197 55 942 C2, which at this point prefers a changeover clutch, that is to say an optional mechanical connection.

The traction lock may be a conventional brake for the respective connecting line, which and / or acts positively. In addition to the disc brake or the brake body described, a band brake is also conceivable here, which blocks a band connected to the respective connecting strand.

The alternate and / or simultaneous blocking of the two connecting strands is accomplished with the aid of the common servomotor and, if appropriate, an additional (linearly operating) actuating device. In the simplest case, the servomotor is an electric motor, which receives corresponding control commands from the control system. In principle, however, a lifting magnet can also be used, which moves the brake body back and forth on the associated connecting strands between the two moving brake elements. This lifting magnet has an armature in its interior which, depending on the electrical loading of the lifting magnet, carries out a linear movement out of or into the lifting magnet.

Consequently, the linearly movable brake body described can be connected to the armature. Finally, instead of the lifting magnet or the servomotor, a door actuation lever can also be used, which triggers the traction lock. This door actuation lever may be an outer door handle or an inner door handle which, as it were, distinguishes itself between a window ^lifting operation and the electric closing or opening with the help of the door lock. In fact, when this door operating lever is triggered, an operator documents that the window lift function, which is predominantly set up is no longer needed. As a result, the traction lock now switches the drive or motor to the door lock, which opens electrically, closes the car door, • inserts the child lock / theft protection, etc. 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:

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

Fig. 2 shows a section through the planetary gear,

Fig. 3 shows the drive unit with the essential components schematically,

Fig. 4a, 4b different designs of the brake elements and

Fig. 5 shows a modification of the subject

Fig. 1 .

The figures show a combined drive unit for at least one unit 1, in the exemplary embodiment a window lift device 1, and a door lock 2 in a motor vehicle door, not shown. This combined drive unit has a mechanical connection unit 4 and a traction lock 5. Both Off ^¬ gears 7, 8 of the connecting unit 4 can be optionally act with the help of the traction lock 5, as FIG. 3 makes clear. A drive shaft 6 extends from the common motor 3 to the connection unit 4.

In this way, two connecting strands, on the one hand a connecting strand 6, 7, 9 and on the other hand a connecting strand 6, 8, 10 are defined according to FIG. 3. With the help of the traction lock 5, the respective connecting line 6, 7, 9 or 6, 8, 10 can now be activated and / or deactivated. That is, it is possible for both connecting strands 6, 7, 9 and 6, 8, 10 to be blocked by means of the traction lock 5. It is equally possible and conceivable that both connecting strands 6, 7, 9 and 6, 8, 10 are released by the traction lock 5. As a rule, however, the two connecting strands 6, 7, 9 and 6, 8, 10 operate alternately. That is, the traction lock activates either the connecting strand 6, 7, 9 or the connecting strand 6, 8, 10, while the other Connection line 6, 8, 10 or 6, 7, 9 is deactivated.

It can be seen that the motor 3 is coupled to the unit 1 with the interposition of the mechanical connection unit 4 and the traction lock 5 via the one connecting line 6, 7, 9. In contrast, the door lock 2 is connected to the motor 3 via the other connecting line 6, 8, 10 with the interposition of the connecting unit 4 and the traction lock 5.

Both connecting strands 6, 7, 9 on the one hand and 6, 8, 10 on the other hand go from the mechanical connecting unit 4 or are combined in the mechanical connecting unit 4, so that the common motor 3 can work on the two connecting strands 6, 7, 9 on the one hand and 6, 8, 10 on the other. 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 connecting unit 4 is designed as a planetary gear 4. This planetary gear 4 has a sun gear with a sun gear shaft 6, which also functions as a drive shaft 6 between the motor 3 and the connecting unit 4. Furthermore, the planetary gear 4 has 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. In the context of the exemplary embodiment, the common motor 3 works on the sun gear shaft 6. The ring gear 8 is connected to a worm gear 10, which rotates a worm disk 11 clockwise or counterclockwise, as indicated in FIG. 1 by a double arrow. As a result, a rotary latch connected to the worm disk 11 can be moved, so that the door lock 2 associated therewith closes the motor vehicle door. It is also possible that the worm disk 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 penetrates the worm wheel 10 for the worm disk 11 as well as the traction lock 5. On the other hand, the ring gear 8 works on the worm wheel via a hollow shaft 8 'which accommodates the web shaft 7 in its interior 10. Basically, the two worms or worm wheels 9, 10 and the common motor 3 can also be connected to rotating elements 6, 7 and 8 of the connecting unit 4 other than those shown.

Within the scope 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 worm 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. This 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 is done in detail in such a way that four braking elements 14, 15, 16, 17 are provided, as it were, which positively and / or non-positively connect the respective connecting strand 6,

Block 7, 9 or β, 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 is also moved. In the context of the exemplary embodiment according to FIG. 1, the brake element 14, 15 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, a brake pin dips as a braking element 14 when a bush is axially loaded Counter braking element 16 in this 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 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 axis, 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 position 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. .J.

14

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 are blocked. As a result, the cable drum 12 is fixed, rather the worm disk 11 is able to turn, both clockwise and counterclockwise - depending on the direction of rotation of the motor 3 or the sun gear shaft 6.

The cable drum shaft 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 wheel 10 experiences gear ratios from 1:50 to 1:70 in order to be able to effect the electrical opening or closing.

It can be seen in particular from FIGS. 1 and 5 that the two drive trains 6, 7, 9 and 6, 8, 10 are arranged collinearly, that is, in the present case in parallel and congruently with one another. They only have different working lengths, on the one hand from the motor 3 to the worm wheel 10 for the drive train 6, 7, 10 and other- on the one hand, from the motor 3 to the worm 9 for the drive train 6, 7, 9. The drive train 6, 7, 9 moves within the drive train 6, 8, 10 designed as a hollow shaft. Finally, when comparing FIGS 5 that the unit or the window lifting device 1 and the door lock 2 are arranged in the axial extension of the connecting unit 4, one behind the other (FIG. 1) or next to one another (FIG. 5). Angled positions to one another are also conceivable.

The variant according to FIG. 5 is particularly characterized by a compact structure. Because here a two-stage spur gear 21 is implemented instead of the worm or worm gear 10 in order to transmit rotations of the ring gear 8 to the door lock 2. Since the two spur gears of the spur gear 21 are each arranged in a parallel plane of rotation compared to the ring gear 8, the particularly compact construction results. Finally, this is helped by the fact that transmission via worm wheel 10 is dispensed with. Rather, a toothed wheel 22 realized in the same plane as the input-side spur gear of the spur gear 21 is realized at this point.

Instead of the worm gear with worm wheel 10 and worm disk 11 or the two-stage spur gear 21 for driving the door lock 2, other gears can in principle also be used. A bevel gear is just as conceivable as a rack and pinion drive. 1 may be self-locking or not self-locking. The same applies to the spur gear 21 in connection with the front Gear 22, which can also be designed to be self-locking or not self-locking. The same applies to the gear transmission at the end of the web shaft 7 between the worm 9 and the cable drum 12. The possibility of equipping the brake body 16, 17, 18 with an additional linear actuating element is not shown. With the help of this adjusting element, the distance between the counter-braking elements 16, 17 can be changed. As a result, the invention is able - practically regardless of the position of the servomotor 13 and the pivot lever 19 - to bring only one Gegenbre element 16 into engagement with the braking element 14 or for simultaneous blocking of both braking elements 14, 15 by the respectively applied counter-braking elements 16, 17 to worry about. In addition, the linear actuating element can of course also reduce the distance between the two counter-braking elements 16, 17 to such an extent that the two braking elements 14, 15 are not blocked, and consequently both connecting strands 6, 7, 9 and 6, 8, 10 from the common motor 3 are applied simultaneously. In any case, it becomes clear that the traction lock 5 (optionally in combination with the linear actuating element described) is able to selectively activate and / or deactivate the relevant connecting strands 6, 7, 9 and 6, 8, 10.

Claims

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 via a connecting unit (4) to at least one traction lock (5), 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 (β, 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 unit (4) has a gear, in particular planetary gear (4).

3. Drive unit according to claim 1 or 2, characterized in that the unit (1) to a planet carrier and the door lock (2) is connected to a ring gear of the transmission, or vice versa.

4. Drive unit according to one of claims 1 to 3, characterized in that at least two brake elements (14, 16; 15, 17) are provided as a traction lock (5), wherein the brake elements (14, 16; 15, 17) form and /or Block or release the respective connecting strand (6, 7, 9; 6, 8, 10).

5. Drive unit according to one of claims 1 to 4, characterized in that the two brake elements (14, 16; 15, 17) are acted upon by a common servomotor (13) and the respective connecting strands (6, 7, 9; 6, 8, 10) block or release.

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

7. Drive unit according to one of claims 1 to 6, characterized in that the two counter-braking elements (16, 17) and the two co-moving brake elements (14, 15) concentrically compared to the continuous drive train (6, 7, 9) for the unit (1) or the continuous drive train (6, 8, 10) for the door lock (2) are arranged.

8. Drive unit according to one of claims 1 to 7, 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.

9. Drive unit according to one of claims 1 to 8, characterized in that the two drive trains (6, 7, 9; 6, 8, 10) are arranged collinearly with each other with different working lengths.

10. Drive unit according to one of claims 1 to 9, characterized in that the unit (1) and the door lock (2) in an axial extension of the connecting unit (4) are arranged one behind the other, side by side or at an angle to one another.