DE102005006093A1 - Retrofit kit for equipping motor vehicle window lifter driven by electric motor with controller has controller configured to automatically control electric motor, especially to brake displacement movement of electric motor - Google Patents

Abstract

The kit connects the electric motor (2) of the window lifter to a switching or control unit (5) via connecting lines, whereby the kit has a separating arrangement for separating the connecting lines and connecting the controller between the electric motor and the switching or control unit and whereby the controller is configured to automatically control the motor, especially to brake a displacement movement of the electric motor.

Description

The The present invention relates to a retrofit kit for a motor vehicle window regulator and in particular, concerns a retrofit kit to replace one of a Electric motor driven motor vehicle windows with a Retrofit control device to ensure, that legal security requirements, in particular with regard to the prevailing when lifting a window pane lifting forces, complied with become.

Electric windows today represent an almost indispensable feature of motor vehicles. The rotational movement of an electric motor, usually a DC motor, is converted by means of a gearbox into an adjusting movement for raising and lowering a windowpane. Electric power vehicle windows are known from the prior art, which have a anti-trap function as an additional security feature. If it is determined that there is a foreign body in the adjustment path of the window pane, for example the forearm, the hand or the head of a passenger, then the drive is switched over to drive up the vehicle window into a descending drive, ie the window drive is reversed so that reverses the direction of movement of the window, which, for example, in the DE 198 23 713 A1 is disclosed. For effective anti-jamming protection, additional sensors are required to detect foreign bodies in the adjustment path of the window pane.

US 6,031,348 Applicant discloses an apparatus and method for controlling an electric motor of a motor vehicle window regulator. To provide the anti-trap function even more effectively, the reaction speed of the control electronics should be able to react even faster to critical operating conditions. For this purpose, the electric motor is connected via a first and a second signal connection to a control device, which is arranged remote from the electric motor. The first signal connection is used to transmit high priority data with a high transmission frequency. The second signal connection is used to transmit data of low priority, in particular the operating commands of a control unit for the power window, wherein the lower priority data are transmitted at a lower transmission frequency. Thus, with a comparable design of the control electronics, the first signal connection can be used for the transmission of control data, which serve to pinch protection. As a result, the adjustment of the electric motor can be reversed even faster.

Based on the aforementioned prior art, the present invention has for its object to provide an even safer and more appropriate in the operation of an electric motor vehicle window system
In accordance with the present invention, a retrofit kit is provided to retrofit a motor vehicle window lifter driven by an electric motor with a controller. The electric motor of the motor vehicle window regulator is connected via connecting lines to a switching or control unit which actuates and / or controls the electric motor of the window regulator. According to the invention, the retrofit kit has separating means in order to separate the connecting lines and to switch the control device between the electric motor and the switching or control unit. For the purposes of the present application, this interposing means, in particular, that the control device is connected to the connecting lines between the switching or control unit in such a way that the control device can influence, preferably switch, the motor current appropriately. In this case, the control device is designed to automatically control the electric motor and decelerate an adjusting movement of the electric motor
According to the invention existing, for example, already installed in a motor vehicle, electric motor vehicle windows can be retrofitted in a simple manner so that it is preferably ensured that these correspond to current safety requirements. According to the invention, an existing electric motor vehicle window lifter is preferably retrofitted in such a way that legal safety requirements can be reliably met even in the case of variable operating states, in particular in the event of even a temporary smoothness of the window lifter.

To the upgrade need simple according to the invention only the existing connection lines separated and the control device of the retrofit kit between the electric motor and the switching or control unit of Windows are switched. For example, for separating a connecting cable or a male-female connection solved become. This simple retrofit measure can fast and inexpensive be made. According to the invention, the connecting lines of the retrofit kit be designed so that the control device at any suitable location, for example in a door module and in particular removed to the electric motor and / or the switching or control unit arranged can be.

As a release agent conventional electrical connection means, such as plugs and / or Bushings or insulation displacement contacts, are used.

Prefers becomes the controller of the retrofit kit from the power supply the electric motor of the window with supplied, so that the control device completely is self-sufficient and no additional Energy supply for to provide the retrofit kit is. For this purpose, preferably the supply line of the control device with at least one connecting line, preferably via diodes with two connecting lines, connected to the electric motor with power supply.

Prefers the release agents are compatible with electrical fasteners designed, which the connecting lines to the electric motor and connect the switch or control unit. Such release agents can formed for example corresponding to plugs and / or sockets be.

By the deceleration of the adjusting movement of the electric motor can be ensured according to the invention be that occurring during the adjustment of the electric motor Lifting or adjusting forces do not exceed a critical value. In particular, you can the occurring lifting or adjusting forces according to the invention so limited be legally complied with be, especially in the case of variable operating conditions of Electric motor and / or windows, for example in the case of a special ease of movement the window regulator mechanics. It is also advantageous that critical operating conditions of Window lifters, in particular those in which high adjustment or lifting forces when adjusting the window pane, not automatically to a reversing of the electric motor, d. H. to a reversal the direction of the adjustment, lead, but that the control electronics first Attempts to the critical operating condition by braking the electric motor and thus eliminate by reducing the effective adjustment or lifting forces. Thus, you can unnecessary Operations, for example, due to an unnecessary reversing of the electric motor the window lift, be avoided even more effectively. Especially when critical operating conditions are relatively likely, for example, in the case of even temporary special smoothness the window regulator, the control device according to the invention ensures that the desired Adjustment can be performed faster overall.

Advantageous is further that a deceleration of the adjustment movement of the electric motor in a particularly simple manner in the form of a circuit for controlling of the current flowing through the electric motor Electricity can be realized.

As stated above, can by braking the invention the electric motor in each case, d. H. even under variable operating conditions and external conditions, always be guaranteed that critical adjustment or lifting forces, such as this particular can not be prescribed by legal security requirements occur. Thus lets according to the invention a and the same type of electric motor for use a variety of different types of window regulators, without this being a separate interpretation of the performance the electric motor needs. For example, the same type of Electric motor for both a relatively smooth-running Windows as well as for a relatively difficult one Windows are used. Thus, according to the invention, the effort for laying out power windows and their mechanics reduced and can also be the cost of procurement, warehousing and manufacturing are further reduced.

Under the term "braking of the electric motor " in the sense of this application, in particular a reduction of the rotational movement or the speed of the electric motor to a value that is lower is as before triggering the deceleration of the adjustment, understood. In particular this lower according to the invention Value of the rotational movement or the speed of the electric motor different from Zero, with the adjustment during and after braking the adjustment of the electric motor according to the invention also continue executed in the same direction unless further action is taken, for example Pinch protection as additional provided security feature, further influencing the Require adjusting movement of the electric motor. In contrast to is known from the prior art to reverse the electric motor, in which case, the value of the rotational movement or speed of the electric motor while a comparatively short time interval to a value with opposite polarity changed and then this value following the reversing of the electric motor is maintained, or the adjustment of the electric motor whole abort, d. H. the value of the rotational movement or the speed of the Electric motor to a value that is essentially zero to minimize.

Preferably, the adjusting movement is braked as a function of at least one measured variable derived from the adjusting movement of the electric motor, which is particularly sensed or detected during the deceleration of the adjusting movement. This parameter relates generally to an operating state of the electric motor and / or the window regulator mechanism and may, for example, a current speed of the adjusting movement, a driven torque of the electric motor, a current effective current of the electric motor and the like represent. As is known, the speed of the adjustment movement, the output torque of the electric motor, the active current of the electric motor and the like are a measure of the actual output power of the electric motor. A relatively high speed of the adjusting movement, a relatively high output torque or a relatively high effective current of the electric motor thus indicate a deviation in the operating behavior of the window lifter or the window regulator mechanism from a standard operating behavior. By suitable braking of the adjustment of the electric motor can thus be restored according to the invention a desired performance of the window regulator.

Prefers the displacement of the electric motor is slowed down and the Lifting or adjusting of the window so limited that a predetermined maximum adjustment force not exceeded is. This maximum adjustment, for example, in customization be prescribed to legal safety requirements. Especially can the maximum adjustment force by a predetermined tolerance below of the maximum prescribed by the legal safety requirements Limit value can be set. As a measure of the power window provided adjustment or lifting force can in particular a current Speed of the adjustment movement or a current speed of the electric motor, a current output torque of the electric motor or a downstream of the electric motor transmission or a more current Active current of the electric motor can be used.

The Limitation of the adjustment by suitable braking of the electric motor can according to the invention in principle occur at any time to always ensure that the maximum Adjustment force not exceeded is. Preferably, the adjusting force is at least when lifting the window limited, so that excessive force a foreign body in the adjustment of the window even before an actual Pinching the foreign body in the gap between the top of the windowpane and a the top edge receiving portion of the door frame effectively prevented can be. Furthermore, the adjustment even when lowering the Window pane are limited, so that an accidental pulling in a foreign body, for example a mechanical object or the finger of a passenger in the gap between the window pane and a door outside or Door lining is effectively prevented.

The inventive measure of braking the adjustment of the electric motor can of course with Canceling the adjustment, for example, if the maximum adjustment force exceeded is, and / or combined with a reversing of the adjustment be, especially if the maximum displacement exceeded is and / or an obstacle in the adjustment of the windowpane is detected.

The Adjusting force according to the invention in sub-areas the adjustment movement of the window even in different Dimensions limited, in particular be mitigated. For example, the rotational movement of the electric motor then, when the window pane is still relatively little raised and the danger of foreign bodies be pinched unintentionally, is relatively low, in one can be braked relatively small amount and can the adjustment movement the electric motor then, if the window already relative is far raised and therefore the risk of an unintentional Pinching foreign bodies in the then comparatively narrow gap between the top edge the window pane and the door frame or the circumferential window seal is comparatively large, relatively be braked strongly, so that the window pane under action a comparatively small lifting or adjusting force in the window seal enters. In this way, excessive force can be applied possibly on yourself in the adjustment of the window pane foreign object still be avoided more effectively.

According to the invention, the Adjusting force depending of at least one signal magnitude having a Operating state of the electric motor represents limited. The control device can thus be more effective to the actual Operating conditions of the electric motor and / or the window regulator mechanism be adjusted. In particular, the operating state of the Electric motor representative Size one Life or operating time of the electric motor, a smooth running the adjustment or a perceived temperature of the electric motor affect.

Preferably, the adjusting movement of the electric motor is braked according to a predeterminable profile. Thus, the control device can be adapted even more effectively to the actual operating behavior of the electric motor and / or the window regulator mechanism. This profile may be, for example, a variable slope ramp function, a half sine function or an exponential function. The profile or function according to which the rotational movement of the electric motor is decelerated can be stored in a memory element or can be actively determined or adapted, for example during at least one test run of a standard window regulator in the mechanical design of the window regulator or following the installation of the window regulator in a Motor vehicle.

Prefers is the adjustment of the electric motor by appropriate control of the current flowing through the electric motor Direct current realized. In principle, any desired DC current control circuits can be used for this purpose be used. Particularly advantageous is the use a semiconductor control circuit having a power semiconductor comprises or is formed by this. In particular, a MOSFET, preferably an n-channel MOSFET, for realizing such a semiconductor control circuit be used. Furthermore, the control device can be designed to the semiconductor control circuit to control by plus-width modulation.

Prefers the electric motor is associated with a detection device to the Rotational motion state of the electric motor, in particular its current Speed, to detect, wherein the control device is designed, on the basis of the detected rotational state of the electric motor decelerate the adjustment or limit the adjustment. The adjustment of the electric motor can thus be more variable be slowed down, especially to varying degrees depending on the current speed of the adjustment movement and current Position of the window pane and depending on the current performance of the The electric motor.

According to one Another preferred aspect of the present invention, the also separately independent is to be claimable, the switching or control unit is designed so that blocking the window lift, for example due to a foreign body in the adjustment of the window, is detected and that the Adjustment movement ends or reverses when blocking of the window is detected. Usually terminates or reverses such a switching or control unit the Adjustment movement only when the current speed of the electric motor or a downstream of the electric motor transmission a predetermined Threshold falls below. There is a risk that, in particular in case of abnormal performance of the window regulator or the window regulator mechanics, for example, a special smoothness, the threshold is set too low is so not reliable guaranteed can be that legal security requirements, in particular those that the maximum lifting and adjusting forces of the window lifter or the Window regulator mechanics relate to be reliably maintained. By the measure according to the invention, slow down the adjustment of the electric motor so much that the switching or control unit blocking the window regulator detected, for example, after falling below the threshold the switching or Control unit, in any case, can cancel or reverse the adjusting movement of the electric motor can be effected. Thus, legal Safety requirements in each case, d. H. especially then, if the threshold of the switching or control unit is too low chosen is to be respected. In other words, the control device according to the invention forms a blocking state of the window regulator or the window regulator mechanism by braking of the electric motor artificially after, and for so long, until finally the switching or control unit triggers, to abort or reverse the adjustment movement. This measure is suitable especially for retrofitting existing windows with an outdated or relatively insensitive Anti-crushing safety feature.

following the invention will be described by way of example and with reference on the attached Drawings, resulting in further features for the person skilled in the art, Advantages and to be solved Tasks and in which:

1a and 1b show in a schematic block diagram two embodiments of a retrofit kit according to the invention;

2 Fig. 12 is a circuit diagram of a first embodiment according to the present invention;

3 Fig. 12 is a circuit diagram of a second embodiment according to the present invention; and

4 Fig. 3 is a circuit diagram of a third embodiment according to the present invention.

In the figures denote identical reference numerals identical or essentially the same elements or functional groups.

According to the 1a is the adapter electronics designed as a retrofit kit 4 between the electrical system or the power supply 5 of the vehicle and the electric motor 2 a motor vehicle power window switched. According to the 1a includes the electric motor 2 a sensor 3 , Especially in the form of a in the housing of the electric motor 2 retractable plug-in unit to detect measures that the operating state of the electric motor 2 relate, for example, the rotational speed, the angular position of an output shaft of the electric motor 2 and the output torque of the electric motor 2 , According to the 1b is the Adap ter electronics 4 together with the sensors 3 in the electric motor 2 provided, in particular in the form of a common or separately designed plug-in unit for insertion into a housing of the electric motor 2 ,

The electric motor 2 drives a power window mechanism to raise or lower a window glass in accordance with control commands of a passenger. For this purpose, control buttons are provided in the known manner, for example in the door inner lining, to suitably control the operation of the window regulator. In particular, a so-called manual operation can be specified with the control buttons, in which the electric motor 2 only adjusted as long as the associated control knob is pressed, and a so-called automatic mode, in which the window even further raised or lowered when the associated control knob is no longer operated. The electric motor 2 can be equipped in the known manner with a anti-trap safety function, so that the adjustment movement of the electric motor 2 upon detection of a foreign body in the adjustment of the window pane (not shown) is reversed automatically. Although the rotational movement of the electric motor also becomes reversible 2 braked, but only during a comparatively short, ideally infinitesimally short, time interval followed by an adjustment movement in the opposite direction.

According to the invention, the adapter electronics 4 designed to adjust the adjustment of the electric motor 2 decelerate to a lower, non-zero value, wherein the adjustment movement also during and after the braking in the same direction as before the release of the deceleration process by the adapter electronics 4 he follows. The inventive function of a deceleration of the adjustment movement of the electric motor 2 serves to limit the adjustment of the electric motor 2 so that, for example, legal requirements, in particular those which relate to a maximum lifting or adjusting force of electric windows, can be complied with in any case. Of course, this function can also be combined with other control functions, for example, with a anti-trap safety function or the function to cancel the adjustment of the electric motor, ie the speed of the electric motor to a value equal to zero decelerate. The inventive function of braking the rotational movement of the electric motor 2 can in principle be performed by the same control device, which is also responsible for the other control functions, as these have been exemplified above.

According to the present invention, the adjusting movement of the electric motor 2 braked in response to at least one of the adjustment derived measure. For this purpose, suitable sensors, which will be described in more detail below, are provided, for example, the speed of the adjustment movement of the electric motor 2 , an output torque of the electric motor 2 or one by the electric motor 2 to detect flowing active current. According to the invention, the adjusting movement of the electric motor 2 slowed down so much and is consequently the one of the electric motor 2 exerted lifting or adjusting so limited that a predetermined maximum adjustment force is not exceeded, as this is specified for example by legal safety requirements. In this case, the adjusting force of the electric motor 2 be actually measured, for example, based on the actual output torque of the electric motor 2 , or can the adjusting force of the adapter electronics 4 be calculated. So can in the adapter electronics 4 a memory element (not shown) may be provided, in which the assignment of the size, which is sensed by the sensors, which are not shown, to the adjusting force of the electric motor 2 is stored. Such relationships can be predefined on the basis of the mechanical design of the window lifter or the window regulator mechanism or on the basis of at least one test run of the window lifter or the window lifter mechanism. In the context of the mechanical design, such a test run can also be carried out before, during or after the installation of the window lifter into a motor vehicle, in particular also with the window pane not yet inserted in the door frame.

As an example of such a relationship is stated that based on the mechanical design or on the basis of a test run, a relationship between the rotational speed of the electric motor 2 and the actually occurring lifting or adjusting the electric motor 2 can be specified. In this case, a relatively low actual adjustment speed can indicate a relative stiffness of the window regulator mechanism, in which case of the electric motor 2 To adjust the window pane comparatively high lifting or adjusting forces must be applied. Such lifting or adjusting forces can exceed legal safety requirements, so that the adapter electronics 4 then the adjusting movement of the electric motor 2 decelerating.

According to a preferred embodiment, legal safety requirements can specify a maximum adjustment or lifting force of less than 350N. Based on the mechanical design or a test run of the window regulator, a relationship between an operation amount of the electric motor 2 , for example, the speed or of the output torque, and the actually made to adjust the window pane lifting or adjusting can be specified. Under abnormal operating conditions of the window regulator or the window regulator mechanism, the actual lifting or adjusting forces can exceed the legally prescribed maximum value. If it is determined that the measured variable concerning the operating state of the electric motor or the window regulator mechanism indicates that the predetermined maximum value is exceeded, the adapter electronics triggers a process for braking the adjusting movement of the electric motor 2 out.

The adjustment can only be limited when lifting the window, but not when lowering the window. The adjusting force can be limited according to a further embodiment, both when lifting and when lowering the window. The adjusting force can also be limited differently in subregions of the adjusting movement of the window pane. For example, it can be provided that the adapter electronics 4 reacts relatively sluggish when the window is still relatively little raised or already lowered relatively strong, and the adjustment of the electric motor is only comparatively slowed down and that the adapter electronics 4 the adjustment movement of the electric motor 2 decelerates relatively strong when the window is already raised relatively high or relatively little lowered and the gap between the upper edge of the window and the peripheral window seal is relatively narrow.

The limitation of the adjusting force of the electric motor 2 can also be adapted adaptively, depending on at least one signal magnitude, which represents an operating state of the electric motor, for example, the life or operating time of the electric motor, for example, by an internal counter of the electric motor 2 or the adapter electronics 4 or can be displayed by a timer, or a smooth movement of the adjusting movement of the electric motor 2 , which, for example, by a comparatively high speed of the electric motor 2 can be displayed at a low effective current, or a perceived temperature of the electric motor.

The adjustment movement of the electric motor 2 can from the adapter electronics 4 be decelerated or slowed down according to a predetermined function, for example in the form of a linear ramp, a half sine function or an exponentially decreasing function. Parameters which define this function can also be subsequently changed, for example as part of a software update of the motor vehicle electronics or on the basis of the adjustment of various measured variables by the adapter electronics 4 For example, the adjustment of the actual speed and the actually delivered output torque of the electric motor 2 ,

According to the 1a can the adapter electronics 4 removed to the electric motor 2 can be arranged, which may be caused, for example, that for the installation of the electric motor 2 in a vehicle door only comparatively little space is available, so it is cheaper, the adapter electronics 4 flexible to the electric motor 2 connect and arrange at a suitable position in the vehicle door.

According to the 1b can the adapter electronics 4 also in the housing of the electric motor 2 be arranged, in particular also in the form of a plug-in unit, on which both the sensors 3 as well as the adapter electronics 4 is provided. According to the 1b additional cables, intermediate plugs or the like in the door can be avoided.

According to the invention acting as a control device adapter electronics 4 for supplying at least one connecting line which supplies the electric motor, connected.

As follows from the 2 to 4 will be described, the current flowing through the electric motor is suitably controlled to decelerate the adjustment movement of the electric motor according to the invention. For this purpose, the use of semiconductor control circuits which comprise or are formed by at least one MOSFET, in particular an n-channel MOSFET, has proved advantageous for this purpose.

The 2 shows the circuit diagram of a retrofit kit according to a first embodiment of the present invention. The reference number 5 denotes switching means for directionally switching the motor current through the connecting lines 12 and 13 , For actuating the electric motor driving the window lifter 2 not shown controls are provided. According to the 2 is the controller 1 For example, a microprocessor or a suitable electronic circuit, between the electric motor 2 and the electrical system 5 the vehicle switched. The separation between the electrical system 5 and the controller 1 takes place at the with the reference numeral 10 designated place. The separation between the controller 1 and the electric motor 2 takes place at the with the reference numeral 11 designated place. The electric motor 2 is a conventional DC motor, as is known for electric motor vehicle windows in the prior art. The power supply of the electric motor 2 via the two power supply lines 12 . 13 ,

At the with the reference numerals 10 and 11 designated points are preferably realized electrical connectors that are compatible with electrical connectors that the connecting lines 12 . 13 with the electric motor 2 or the electrical system 5 connect. Thus, the retrofit kit according to the 2 by simply replacing plug connections between the electric motor 2 and the electrical system 5 or an existing switching or control unit to be switched.

According to the 2 are two schematically with the reference numeral 14 designated switch provided to the by the electric motor 2 to control the flow of electricity. The switches 14 each comprise a MOSFET with immanent substrate diode, wherein the channel connections of the MOSFETs are connected in series and the substrate diodes are poled in opposite directions. According to the 2 is the control output 15 the control device 1 each with a control input 16 the power control circuits 14 connected to control the gate terminal of the respective MOSFETs. The substrate diode of a respective current control circuit 14 blocks the flow of current in one direction, so that the flow of current through the channel connection of the associated MOSFET via the control output 15 the control device 1 can be suitably controlled to the flow of current through the electric motor 2 suitable to control. The opposite polarity of the two substrate diodes of the current control circuit 14 Ensures that the current flow through the electric motor 2 can be suitably controlled in both directions. According to the 2 is the output of the right power control circuit 14 with the contact point 11 connected. As will be apparent to those skilled in the art without further, at least one of the two in the 2 shown power control circuits 14 also in the upper power supply line 12 be provided to control the flow of electricity. Although in the 2 not shown, the control device 1 have at least one signal input to the control device 1 an adjusting movement or the operating state of the electric motor 2 or the size of the window regulator mechanism, on the basis of which the current through the electric motor 2 is suitably controlled.

The 3 shows a circuit diagram according to a second embodiment of the present invention, in which a pulse width modulation for controlling the drive current of the electric motor 2 is used. According to the 3 accesses the power supply circuit 26 from the connecting lines 12 . 13 a supply voltage Vc from to the control device 1 to supply. The capacitor C reduces voltage fluctuations and the freewheeling diodes D1, D2 prevent a backflow of current to the grounded connection line. The voltage from the lower power supply line 13 is applied to an edge-triggered input Upol of the control device 1 created, with the resistance 27 limits the current flow. About the control output 15 gives the controller 1 Pulses with a variable ratio of switch-on to period duration. Behind the control device 1 For example, a screen member may be provided to reduce ripple, such as an LC filter, to minimize power losses. The at the control output 15 applied control pulses control the flow of current through the power control circuit formed by a MOSFET 14 , Of course, for pulse width modulation as an alternative to a square wave voltage, a triangular voltage with a variable triangular frequency can be used, which includes both the pulse width and the switching frequency of the current control circuit 14 affected.

According to the 3 is via the signal line 30 and the amplifier 31 a measure of the current flow through the current control circuit 14 or the electric motor 2 tapped. The tapped signal is sent via the signal line 32 to a gated input of the controller 1 created so that by simply counting the ripple or ripples of the current information about the current speed of the electric motor 2 can be derived. In combination with a memory device, not shown, from the via the signal input 32 applied signal to the respective current position of the window pane of the window regulator (not shown) to be closed. In addition, by means of the measured value, the active current can be determined by the electric motor and a trapping case can be detected.

According to the 3 is a relay driver 21 provided by the power supply circuit 23 is supplied by the connecting lines 12 . 13 picks up a supply current. Switching signals of the control device 1 be via the switching output 22 to the relay driver 21 created, which consists of two relays RS2, RS1 comprehensive changeover relay 20 controls the current direction of the drive current of the electric motor 2 to specify and to reverse if necessary. According to the 3 the respective current direction is via the gated connection Upol of the control device 1 determined.

The 4 shows the circuit diagram of a further embodiment according to the present invention. Instead of picking up the current rotational speed of the electric motor and / or the current position of the window pane by tapping a ripple or a ripple of the current flowing through the electric motor, according to the third embodiment is a motor state detector 35 provided to derive a measure of the current operating state of the electric motor. According to the 4 is the engine condition detector 35 designed as a Hall sensor whose signals via signal lines 36a . 36b to a control circuit STV and via an amplifier 31 and the signal input 32 to the edge-controlled input of the control device 1 be created. The contact point between the Hall sensor 35 and the control circuit STV is in the 4 with the reference number 38 designated.

According to the 2 to 4 the adjustment movement of the electric motor is decelerated by controlling the current flowing through the electric motor.

As one skilled in the art can appreciate from the foregoing description, the switch or control unit may be used 5 according to the 4 In principle, an anti-trap safety function can be realized, so that when a blocking of the window lifter is detected, for example by means of a sensor provided in a circumferential window seal sensor, the adjusting movement of the electric motor 2 reversed in response to the detection of the blocking of the window regulator in the known manner, or at least terminated immediately. Overall, according to the invention, a direction-dependent energization of the electric motor can be accomplished via the connecting lines.

In principle, the control device according to the invention 1 the drive current of the electric motor 2 in the above with reference to the 2 to 4 control manner described, wherein the adjusting movement of the electric motor 2 from the controller 1 is slowed down so much that the anti-trap safety function of the switching or control unit 5 can reliably detect a blockage of the window regulator or the window regulator mechanism. For this purpose, the control device brakes 1 the adjustment movement of the electric motor 2 so strong that a threshold of the switching or control unit 5 , which is representative of a blocking of the window regulator or the window regulator mechanism, is exceeded. In other words, the controller 1 Articulating a blocking condition of the window lifter, so that the anti-trap safety function of the switching or control unit 5 triggers in the known manner.

As the above description can be readily appreciated, The present invention is also according to another aspect to a corresponding method for controlling an electric motor directed a motor vehicle window, wherein the method the steps described above are performed. Such a control process can in the known manner in the form of software or a computer or machine-readable control program be implemented on a suitable disk, computer program product or semiconductor device, in particular an application-specific integrated Circuit (ASIC), can be stored.

1

control device

2

electric motor

3

sensors

4

Adapter Electronics

5

On-board power supply / power supply / switching or control unit

10

contact point

11

contact point

12

Power line

13

Power line

14

Current control circuit

15

control output

16

control input the current control formwork

17

Power line

17

Power line

20

Power switching device / transfer relay / bridge circuit

21

driver

22

switching output

23

Power supply circuit

24

tap

25

tap

26

Power supply circuit for control device 1

27

resistance

30

signal line

31

amplifier

32

signal input

35

Engine condition detecting / Hall sensor

36a, b

signal line

37

contact point

38

contact point

39a, b

signal line

Claims (25)

Retrofit kit to power one of an electric motor ( 2 ) powered motor vehicle windows with a control device ( 1 ), the electric motor ( 2 ) of the motor vehicle window lifter via connecting lines ( 12 . 13 ) with a switching or control unit ( 5 ), the retrofit kit includes release agents ( 10 . 11 ) to the connecting lines ( 12 . 13 ) and the control device ( 1 ) between the electric motor ( 2 ) and the switching or control unit ( 5 ), and wherein the control device ( 1 ) is adapted to the electric motor ( 2 ), in particular an adjusting movement of the electric motor ( 2 ) decelerate. Retrofit kit according to claim 1, which is designed such that the control device ( 1 ) of egg ner power supply of the electric motor ( 2 ) is supplied. Retrofit kit according to claim 1 or 2, wherein the control device ( 1 ) for supplying at least one connecting line ( 12 . 13 ) connected is. Retrofit kit according to one of the preceding claims, in which the separating means ( 10 . 11 ) are designed to be compatible with electrical connection means connecting the connection lines ( 12 . 13 ) with the electric motor ( 2 ) and the switching or control unit ( 5 ) connect. Retrofit kit according to one of the preceding claims, in which the control device ( 1 ) is designed to decelerate the adjustment movement in dependence on at least one of the adjustment derived measure. Retrofit kit according to claim 5, wherein the measured variable is a speed of the adjusting movement, an output torque of the electric motor ( 2 ) or an active current of the electric motor ( 2 ). Retrofit kit according to claim 6, wherein a shunt resistor or an internal resistance of a MOSFET (SenseFET) of the control device for measuring a current, in particular the active current of the electric motor ( 2 ) is designed. Retrofit kit according to one of the preceding claims, in which the control device ( 1 ) the adjusting movement of the electric motor ( 2 ) decelerates to limit an adjusting force, so that a predetermined maximum adjustment force is not exceeded. Retrofit kit according to one of the preceding claims, in which the control device ( 1 ) is designed to limit the adjustment force when the window lift raises a window pane. Retrofit kit according to claim 9, in which the control device ( 1 ) is further configured to limit the adjustment force when the window regulator lowers the windowpane. Retrofit kit according to one of claims 8 to 10, in which the control device ( 1 ) is designed to cancel the adjustment when the maximum adjustment force is exceeded. Retrofit kit according to one of claims 8 to 10, in which the control device ( 1 ) is designed to reverse the adjustment when the maximum adjustment force is exceeded and / or an obstacle is detected in a displacement of the window regulator. Retrofit kit according to claim 12, in which a switching means ( 20 ) for reversing a drive current of the electric motor ( 2 ) for reversing the electric motor ( 2 ) is provided. Retrofit kit according to one of claims 8 to 13, in which the control device ( 1 ) is adapted to the adjusting force as a function of at least one size, the operating state of the electric motor ( 2 ) represents limiting. Retrofit kit according to claim 14, in which the control device ( 1 ) is designed so that the operating state of the electric motor ( 2 ) representing a life or service life of the electric motor ( 2 ), a smoothness of the adjustment or a perceived temperature of the electric motor concerns. Retrofit kit according to one of the preceding claims, in which the control device comprises a semiconductor control circuit ( 14 ), in particular a power semiconductor, comprises a current of the electric motor ( 2 ) to control. Retrofit kit according to Claim 16, in which the semiconductor control circuit ( 14 ) comprises at least one MOSFET, preferably at least one n-channel MOSFET. Retrofit kit according to claim 17, wherein the MOSFET is the connecting line ( 13 ) is interrupted and connected to this. Retrofit kit according to one of Claims 16 to 18, in which the control device ( 1 ) is adapted to the semiconductor control circuit ( 14 ) by pulse width modulation. Retrofit kit according to one of the preceding claims, in which the electric motor ( 2 ) a detection device ( 30 ; 35 ) is assigned to a rotational movement state of the electric motor ( 2 ), the control device ( 1 ) is adapted to receive data from the detection device ( 30 ; 35 ) and to decelerate the adjusting movement on the basis of the received data or to limit the adjusting force. Retrofit kit according to Claim 20, in which the control device ( 1 ) with the detection device ( 30 ; 35 ) to a plug-in unit for insertion into a housing of the electric motor ( 2 ) is summarized. Retrofit kit according to one of the preceding claims, further comprising an interface ( 21 ) for connection to a switching device which is a current direction of a drive current of the electric motor ( 2 ) changes. Retrofit kit according to one of the preceding claims, in which the control device ( 1 ) is adapted to the adjusting movement of the electric motor ( 2 ) so that the switching or control unit ( 5 ) detects a blocking of the window lifter and closes or reverses the adjustment movement of the window when blocking the window lifter is detected. Retrofit kit according to Claim 23, in which the control device ( 1 ) is adapted to the adjustment movement to a speed below a threshold value of the switching or control unit ( 5 ) decelerate. Retrofit kit according to one of the preceding claims, in which the switching or control unit ( 5 ) for direction-dependent energization of the electric motor ( 2 ) via the connecting lines ( 12 . 13 ) is designed.