EP1426531A1 - Combined drive unit for a window lifter and a door lock in a vehicle door. - Google Patents

Abstract

The changeover unit (6) is controlled by a door handle (16).

Description

The invention relates to a combined drive unit for at least one unit and a door lock in a motor vehicle door, with a switching device to choose from Actuation of the unit or the door lock from a common engine. - The unit is usually a window lifter, albeit of course, other devices in a motor vehicle door can be acted upon by the common motor. The switching device may be a switching clutch, that is, in the drivetrain integrated optionally switchable Be clutch designed. However, this is not mandatory because the switching device also includes switching elements, that are not necessarily part of the drive train or must be.

Such a combined drive unit is in the frame DE 197 55 942 A1. Here is a vehicle door spelled out using a common electrical Drive motor for a window mechanism and one Door pull mechanism has. A changeover clutch ensures for an optional coupling of the drive motor into the Power window drive mechanism or drive train of the door pull mechanism. The window regulator motor is spatially separated from the window lifting mechanism, where the drive motor and changeover clutch form a structural unit to form. The respective ones take care of the transmission of the forces Cable pulls on the one hand to transmit the driving force to the window mechanism on the other hand for transmission the driving force on the door pull mechanism.

It is expensive. In addition, the known drive unit builds relatively expansive.

In addition, you know a door locking device, such as it is described in the context of EP 1 149 969 A1. On there drive has at least a first and a second position and can be moved between them. This enables different functional positions to be displayed become.

The state of the art cannot convince in all points. This is not only a relatively complicated structure on, but requires the known drive unit after DE 197 55 942 A1 controls the changeover clutch with the help of an electronic control unit. This happens according to corresponding priorities and consequently delayed following corresponding operating commands. How these are initiated remains open.

The invention is based on the technical problem combined drive unit of the one described To develop design so that with a compact structure an immediate application of the switching device succeed.

To solve this technical problem is a combined one Drive unit for a unit and a door lock in a motor vehicle door according to the invention characterized in that the switching device by a door operating lever is controlled.

The aggregate is usually the one already addressed window lifting device. The switching device May be designed as a changeover clutch. at the door operating lever can be an outside door handle or act on an inside door handle. The door operating lever can also be used be designed as a main operating lever, if the outside door handle and the inside door handle are together on one such main operating lever work. Basically is under a door operating lever in the context of the invention any mechanical lever to understand which functional positions of the door lock initiated. This only includes for example a lever with an internal locking button is connected and for example the locking function of the door lock triggers. Likewise, it likes the door operating lever by one on the optional Central locking device of the door lock working act mechanical element. Even the central locking lever as such falls under the term door operating lever.

The motor is preferably applied in a deflected state Position of the door operating lever via the changeover device or changeover clutch the door lock. On the other hand couples the door operating lever in its resting position the switching device or switching clutch and thus the common motor with the window lifting device. In this In this case, the window lifting device is effective. That applies for most operating conditions, as long as not the door operating lever from its rest position is transferred to the deflected position. It can be seen that when opening and closing motor vehicle doors usually no need to operate the Window lifting device exists.

Only then does the common motor ensure that the door lock the functional position desired by the door operating lever occupies. This may be an electrical one Act open, i.e. the motor lifting Pawl, as it is for example in DE 195 30 726 A1 is described. The closing function can also be done directly represent via the door operating lever in the context of the invention, for example, as is the case in DE 199 42 360 A1 describes.

To the possible functional positions that can be found with the help of the common motor is part of that Insert the lock functions anti-theft device and / or Parental Control. It is also conceivable to share Use a motor for the central locking. Understands it that the door lock in the motor vehicle door with common mechanical components such as a ratchet a rotary latch and a pawl and at least an operating lever and a locking lever is. The locking lever is preferably around a central locking lever. Referred In this respect, for example, DE 297 23 462 U1, which describes a door lock, as is the case with the invention combined drive unit for use can come.

A particularly compact structure can then be realized if the relevant common motor for the window lifting device and the door lock on a housing of the door lock is arranged. In connection with the present Invention means housing that the lock mechanism overall surrounding wrapping or casing. This can be made in one or two parts. Also multi-part Refinements are conceivable.

What is differentiated from the lock housing is the so-called Lock plate, which is the catch from the rotary latch and Pawl picks up. The lock plate is used occasionally also as a lock plate, lock case or locking element shell designated. The close to the lock plate Lock housing and a cover covering the lock housing Housing cover or lock cover.

In a one-piece embodiment of the lock housing the lock cover is part of the lock housing. This Lock housing can according to DE 199 20 278 A1 be completely closed or over have more or less large openings. The common one Motor may now be arranged on the lock housing. at a one-piece housing design can be found in the Rule on the opposite of the lock plate or lock case Casing surface. With a two-part Castle housing training, this surface is separate from the Lock cover formed, which in connection with the lock housing the overall surrounding the lock mechanism Wrapping represents.

The door operating lever is connected to a spring the switching lever adjusting intermediate lever articulated.

In addition, another spring is provided, which the Intermediate lever in the rest position of the door operating lever into a window lifter coupling with the motor and transferred to this position. This So spring ensures that the door operating lever without Is transferred to its resting position and here with the help of the intermediate lever for coupling the Motors with the window lifting device via the changeover clutch is taken care of. The door operating lever takes the deflected position usually only when it is mechanical, for example with the hand of an operator, is applied.

The intermediate lever for loading the changeover clutch is usually a two-arm lever with clutch arm and Switch arm trained. The clutch arm of the Intermediate lever in a recess of the changeover clutch, while the switching arm when the intermediate lever is acted on operated a switch by means of the door operating lever. This switch or a corresponding switching device is only triggered when the door operating lever is in his deflected position is transferred. This can be guaranteed that during this loading the door operating lever directly the common motor starts up and, for example, an electrical one at short notice Opening the door lock is carried out. Even when relieving or release the door operating lever spring engaging the intermediate lever to ensure that the Changeover clutch immediately (again) the common motor connects to the window lifting device. At the same time the aforementioned switch opened so that the electrical Opening is ended.

This sequence of functions is unproblematic because during the phase of the electrical opening of the door lock There is a need for operating the window lifting device. Sharing the common engine for the described As a result, the lock function does not constitute a restriction on comfort - Of course there is of course still within the scope of the invention the possibility of the common Motor both for loading the window lifting device as well as the door lock. In the However, an alternative company is usually pursued, if only the performance for the engine and its dimensions are not to have to dimension excessively.

The changeover clutch can be one with a Output shaft of the motor frictionally connected rotating ring act. This rotating ring can be axially on the Shift output shaft. The window lifting device and the door lock is preferably each one Worm wheel on each one on the output shaft rotative stored pinion connected. Each sprocket stands with the Switchover clutch alternatively in frictional engagement, so that at on the respective pinion of the switching clutch Motor over the output shaft on the hereby rotating changeover clutch works, which in turn the each engaged with the changeover clutch Takes pinion and consequently over the worm wheel either drives the window lifting device or the door lock.

Specifically, this is a recessed in the output shaft Key provided for connecting the Rotating ring with the output shaft ensures. This key extends in the axial direction of the output shaft, so that the changeover clutch easily the rotary movements can follow the output shaft, but still the desired one Axial displacement using the intermediate lever over the Door actuation lever experiences, on the one hand, the changeover clutch with the pinion for the window lifting device and on the other hand engages with the pinion for the door lock to bring.

As a result, a combined drive unit is available in which the common Motor on the window lifter works. Because the The door operating lever is usually in its resting position Position. Only when an operator for an application the door operating lever in the deflected position, an intermediate lever is deflected, which is the changeover clutch from their engagement with the pinion for the window lifter removed and axially on the output shaft shifts.

After covering a predetermined axial path of the changeover clutch or the axially displaceable rotating ring the changeover clutch goes into frictional engagement with the pinion for the door lock so that the drive motor immediately can work on the door lock. Because an operator with its deflection of the door operating lever an immediate Functional request of the door lock expresses, ensures the intermediate lever with its switching arm, which the Switch actuated, so that not only the changeover clutch engages with the pinion for the door lock is brought, but at the same time the common engine starts up and the desired worm wheel turns Functional position initiated in the door lock. in this connection it is usually the process of the so-called electrical opening, d. H. the pawl in the door lock is excavated, so that the Catch comes free immediately. This process requires only a short-term exposure to the common Motors, so that even after immediate release of the Door operating lever on the part of the operator and thus associated engine shutdown (because of the shift arm of the intermediate lever no longer actuates the switch) the corresponding opening process is completed. It it is understood that, if necessary, a control device ensures that the motor is acted on for at least as long until the desired functional position is reached safely is.

All of this works with a particularly compact design, because of the common motor usually to the housing of the door lock connected. This way the engine can not just the electrical opening function described realize inside the door lock, but exists furthermore the possibility (by means of an intermediate Transmission) a window pane of the window lifting device directly over an edge-engaging Drive pinion. This may be how this is described in DE 197 03 720 A1 or DE 199 09 088 A1 becomes. Here are the main advantages too see.

Fig. 1

eine Kraftfahrzeugtür mit der eingebauten erfindungsgemäßen Antriebseinheit,

Fig. 2

die Antriebseinheit im Detail,

Fig. 3

den Motor der Antriebseinheit in Verbindung mit dem Türschloss und

Fig. 4

einen schematischen Schnitt durch den Motor mit Umschaltkupplung sowie zugehörigen Ritzeln.

The invention is explained in more detail below on the basis of a drawing illustrating only one exemplary embodiment; show it:

Fig. 1

a motor vehicle door with the built-in drive unit according to the invention,

Fig. 2

the drive unit in detail,

Fig. 3

the motor of the drive unit in connection with the door lock and

Fig. 4

a schematic section through the engine with changeover clutch and associated pinions.

In Fig. 1, a motor vehicle door 1 is shown, and although looking from the motor vehicle interior. at the motor vehicle door 1 is within the scope of the exemplary embodiment around a motor vehicle side door. One recognises a designed as a window lifting device 2 Unit 2 and a drive unit 3, both on the Window lifting device 2 and a door lock 4 works.

Actually, the drive unit 3 has one for this common motor 5, shown particularly in Fig. 4 is. The motor 5 includes a switching device 6 which in the context of the exemplary embodiment as a changeover clutch 6 is trained. The changeover clutch 6 acts optionally the window lifting device 2 or the door lock 4. For this purpose, respective worm wheels 7, 8 are provided, which the rotary movements of the motor 5 on the one hand on the Window lifting device 2 and on the other hand the door lock 4 transfer. This is done by means of an output shaft 9 of the motor 5 rotating pinions 10, 11. The pinion 10 works together with the worm wheel 7 on the Window lifting device 2 when the changeover clutch 6 is in its illustrated left position. On the other hand the motor 5 acts on the door lock 4 when the changeover clutch 6 is moved axially to the right and in Frictional engagement with the pinion 11 and the worm wheel 8 stands.

The changeover clutch 6 is one with the Output shaft 9 non-positively connected rotary ring 6, which has two coupling surfaces 6a, 6b in between recess 6c located. On average they form two coupling surfaces 6a and 6b a U-profile, which between them the recess 6c receives.

For the connection of the changeover clutch or the rotating ring 6 with the output shaft 9 provides a key 12, which in an axial recess 13 of the output shaft 9 is and extends in the longitudinal direction of the output shaft 9. The key 12 engages in a corresponding one Longitudinal groove 14 of the switching clutch 6, so that the switching clutch 6 the rotational movements of the output shaft 9 follows, but axially in the space Z between the can move both pinions 10, 11. That happens with With the help of an intermediate lever 15, which in turn by a door operating lever 16 is deflected.

The respective coupling surfaces 6a, 6b work with corresponding ones Coupling surfaces 10a and 11b on the one hand Pinion 10 and on the other hand together on pinion 11. As soon as the respective coupling surfaces 6a, 10a or 6b, 11b in Intervention with one another ensures a thereby formed Frictional connection that with the help of the motor 5 over the Output shaft 9 rotationally driven changeover clutch 6 their rotational movements on the frictionally connected Transmits pinion 10 or 11. In this way, the corresponding meshing worm wheels 7 or 8 rotated. On the one hand, this causes the Window lifting device 2 and on the other hand the door lock 4 the loading described in more detail below, and alternatively.

Around the changeover clutch 6 between the two pinions 10, 11, an operator must use the door operating lever 16 of its resting shown in Fig. 4 Position to its deflected position what is indicated by an arrow on the door operating lever 16. The fact that the intermediate lever 15 by means of a spring 17th is hinged to the door operating lever 16, also follows Intermediate lever 15 of this movement and rotates clockwise about its axis 18.

As a result of this clockwise movement, a clutch arm shifts 15a of the intermediate lever 15, which in the recess 6c of the switching clutch 6 engages, the switching clutch 6 left to right in Fig. 4 like this is indicated by an arrow. Consistently carried out a switching arm 15b of the intermediate lever 15 a counter movement, whereby a switch 19 or a corresponding switching device is operated.

As a result of this switch actuation, the common motor 5 immediately applied and rotates so that not only the switching clutch 6 in the process described in Engagement with the pinion 11 is brought, but at the same time the pinion 11 is driven in rotation by the motor 5 becomes. As a result, the worm wheel 8 operates on the one in FIG. 3 ratchet of a ratchet 20 that can only be recognized rudimentarily the door lock 4, in the sense of an opening of the locking mechanism 20. The door lock 4 then takes immediate effect its open position.

As soon as an operator stops the door operating lever 16 loaded or released, it returns to the position 4 back, so that the intermediate lever 15 - loaded by another spring 21 - also the position after Fig. 4 (again) and consequently the changeover clutch 6 again in engagement with the pinion 10 for the window lifting device 2 brings. As a rule, the engine 5 works So on the window lifting device 2, because the spring 21st the intermediate lever 15 when released or unstressed Door operating lever 16 immediately in one position transferred, which the switching clutch 6 with the pinion 10th engages. This position is maintained as long as until the door operating lever 16 in the event of a deflection corresponding forces of the spring 21 overcomes, so that the Intermediate lever 15 the described pivoting (clockwise) experiences.

In the context of the exemplary embodiment, the motor 5 works the window lifting device 2 according to FIG. 3, that the motor 5 with an indicated gear 22 an end gear directly on an edge toothing an indicated window pane F works like this is exemplified in DE 197 03 720 A1 or DE 199 09 088 A1 is described.

It has proven to be particularly advantageous if the motor 5 is connected to a housing 23, 24 of the door lock 4 is. This housing 23, 24 of the door lock sets the mechanical components of the door lock 4 carrying lock case 23 and a sealing Lock cover 24 together. Within the scope of the exemplary embodiment is the motor 5 to the surface facing outwards the lock cover 24 connected, for example it is in a recess 25 of the lock cover 24 recorded with a click, but this is not mandatory.

This allows the engine 5 without the intermediary of Bowden cables or the like on the one hand directly on the window lifting device 2 and on the other hand the door lock 4 work. It is only the interposition of the transmission 22 or a corresponding lever for the electrical opening required.

Claims (13)

Combined drive unit for at least one unit (2) and a door lock (4) in a motor vehicle door (1), with a switching device (6) for selectively loading the unit (2) or the door lock (4) with a common motor (5), characterized in that the switching device (6) is controlled by a door operating lever (16). Drive unit according to claim 1, characterized in that the switching device (6) is designed as a switching clutch (6). Drive unit according to claim 1 or 2, characterized in that the unit (2) is a window lifting device (2). Drive unit according to one of claims 1 to 3, characterized in that the motor (5) acts on the door lock (4) in the deflected position of the door operating lever (16) via the switching device (6), while the switching device (6) in the stationary position of the door operating lever (16) couple the unit (2) to the motor (5). Drive unit according to one of claims 1 to 4, characterized in that the door actuation lever (16) is articulated by means of a spring (17) to an intermediate lever (15) which adjusts the switching device (6). Drive unit according to one of claims 1 to 5, characterized in that the intermediate lever (15) in the inoperative position of the door operating lever (16) by means of a spring (21) transfers into a position coupling the unit (2) to the motor (5) and in this position is held. Drive unit according to claim 5 or 6, characterized in that the intermediate lever (15) is designed as a two-arm lever with coupling arm (15a) and switching arm (15b). Drive unit according to claim 7, characterized in that the clutch arm (15a) of the intermediate lever (15) engages in a recess (6c) of the changeover clutch (6). Drive unit according to claim 7 or 8, characterized in that the switching arm (15b) of the intermediate lever (15) actuates a switch (19) when the intermediate lever (15) is acted on by means of the door operating lever (16). Drive unit according to one of claims 1 to 9, characterized in that the switching device (6) is designed as an axially displaceable rotary ring (6) connected to an output shaft (9) of the motor (5). Drive unit according to one of claims 1 to 10, characterized in that the unit (2) and the door lock (4) each via a worm wheel (7, 8) to a respective pinion (10, 11) rotatably mounted on the output shaft (9) are connected. Drive unit according to one of claims 1 to 11, characterized in that the switching device (6) is connected to the output shaft (9) by means of a feather key (12). Drive unit according to one of claims 1 to 12, characterized in that the motor (5) is arranged on a housing (23, 24) of the door lock (4).

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