DE4432955C2 - Method for operating an electromotive window regulator for a motor vehicle - Google Patents

Description

The invention relates to a method for operating an electromotive window regulator for a motor vehicle. Such a method or one after This is the procedure described by the window regulator for example as the DE 33 03 590 C2; are such procedures also in series production.

The driver of a vehicle usually has two in particular Possibilities to open or close the windows: An automa The windows are lifted or lowered by longer than a predetermined minimum time, for example 300 ms Depress the button (so-called "buttons") to the respective towards the end position of the disc, i.e. when in this together hang particularly interesting lifting or closing the pane until the upper edge of the pane touches the pane frame, whereby a blockage detection takes effect, which then if an engine stop sensor, for example a Hall sensor, during a predetermined period of time, for example 500 ms, does not give any signal that the engine is rotating, the Engine switches off. This automatic lifting can also by pressing the button under for a second time be broken; then the disc remains in the respective one Stand at an altitude.  

In addition, the driver can operate the pane by briefly pressing it key (jog mode) in the vertical direction by small Move distances, for example 4 millimeters each.

The timing of touch and touch operation can also be reversed.

There is an excess force for the closing movements of the disc limitation (ÜKB) is provided so that the lifting movement of the disc is stopped or interrupted when there is between the disc and a foreign body, for example the Head or hand of the driver.

This measure primarily serves to protect against injuries. The ÜKB includes two functions, namely stopping or interrupting the stroke movement of the disc and the reversal of its movement supply in the sense of an opening movement, for example by turning Reversal of direction of the electric motor. By reversing this that is, the obstacle that was first pinched is released again.

This - therefore absolutely necessary for security reasons - ÜKB with its two functions now creates difficulties also in normal operation of the disc, namely when the upper edge of the pane in the seal assigned to it. The for Overcoming the forces that occur when entering the seal required increase in the driving forces of the disc is not constant, d. H. it does not fall within the response threshold of Calibrate ÜKB, as it were, from disc to disc Tolerances can occur and also the seal materials are temperature-dependent in terms of their flexibility are. Therefore known generic methods work with automatic shutdown of the ÜKB at a distance of for example, 4 millimeters in front of the disc infeed into you tung. Then you can open the seal in the seal occurring increased driving forces do not trigger the Lead ÜKB. This measure in turn means that the  this distance corresponding to the height of the pane can be stored must, d. H. the disc must have a reference position (closed Disc with its upper edge resting against the upper stop) be assigned, from which then via a position or Movement counter when the defined distance is reached Upward movements of the disc are sensed and thereby the ÜKB is switched off automatically. Only if the Bewe at this defined closed position of the disc a predetermined initial value is set, the described automatic operation.

Now there are special operating cases that include deactivation least one of the two functions - stop, reverse - the Make ÜKB necessary. This is how a tension ends failure (reset), for example by disconnecting the board battery of the vehicle was caused before the renewed Er possible automatic lifting operation described "Initialization run" to restore the defined Reference (motion counter e.g. set to 0 when at upper An impact of the upper edge of the pane) in the further operation of the window regulator the ÜKB operation again until the above defined distance before Disk run-in is guaranteed. Because the power failure is not has necessarily occurred with the window closed in the most general case it can be assumed that these are exact Reference no longer exists. But then this results Difficulty in maintaining those heights area of the pane in which the ÜKB is to operate. in particular then there are special difficulties in running in upper edge of the pane in the sealing area, since this is then possible the ÜKB is not switched off.

In this described special case of the reset is therefore first an interruption of at least one function of the ÜKB is required until the specified reference (movement counter e.g. 0 when the disc is in the upper stop position) is.  

Another special case is that of overcoming Difficulties in lifting the disc within the Area of effectiveness of the ÜKB (i.e. with the top of the pane in position edge below the defined distance from the seal inlet). Such stiffness can, for example, by Ver soiling of the pane guide may be caused; they lead to address the ÜKB, with regard to both functions the same, i.e. stopping and reversing. Since not sure here is affected (pinching limbs), the But drivers must be given the opportunity to do so Stiffness for the purpose of closing the disc too overcome, it is known by means of a second key To give drivers the opportunity to temporarily have the ÜKB ineffective close. The electric motor then works with increased electrical power consumption without this responding the ÜKB leads, and usually this increases the lifting power overcoming the stiffness and accordingly to ge desired height adjustment of the disc.

In the prior art is in the two described special drive cases a temporary deactivation of the ÜKB he required in the known methods and facilities is triggered by a second button. However, this means not just additional effort in terms of electrical construction parts along with wiring and space on the dashboard or at the door, but required by the respective operator also a thorough study of the instruction manual, whereby Experience has shown that many people are overwhelmed. Currently at Motor vehicles must have the operating effort and must Operation required knowledge from the conception be kept as low as possible, since the operation is usually done by technical amateurs. It can also be used for operation errors, d. H. to the undesired deactivation of the ÜKB.  

DE 41 27 047 A1 describes an electromotive window regulator for a Motor vehicle in which an object is caught between one another closing disc and the disc frame from the increase occurring derived from the operating current of the drive motor for the window lifter and thereby the motor is switched off or switched to the opening direction. So that these Shutdown not undesirable even when turning on the engine for one unimpeded closing movement occurs due to the increased starting current of the motor, the current position of the disc is detected with a position sensor and thereby switching off the motor and / or switching to the opening direction limited a small remaining opening of the disc.

DE 38 29 405 C2 describes an electromotive window regulator for a Motor vehicle with a setpoint device for the desired position of the disc and an incremental actual value transmitter for the current actual position of the disc and a microprocessor for comparing the setpoint and actual value for executing Control and regulation programs. This can achieve a desired target Position, e.g. B. the closed state of the disc, recognized and z. B. a Drive motor for the disc can be switched off.

The invention has for its object a method for operating a to create electromotive window regulator for a motor vehicle, for the Production of the normal operation described requires no additional pushbutton.

This object is achieved by the features specified in claim 1. advantageous Embodiments of the invention are in the subclaims specified.  

The invention therefore sees sensors and a link different whose sensor signals, namely first signals for the presence a special case, e.g. B. a reset, third signals for blocking detection (a Hall sender does not provide any signals for turning the electric motor) and signals that reaching characterize the upper stop position of the disc, in the Way that automatically by the respective operator repeated operations on the same button (second signals) to restore normal operation of the Guide the glass lifter. For example, if there is a The operator becomes stiff when moving the disc "Closing the window" when you press the Key not fulfilled, rather the response of the ÜKB the lifting movement stopped and the disc opened again. car the driver presses the button again, but this too does not yet lead to the desired result "Close the Disc ", but - according to the embodiment of the invention Claim 4 - to stop the disc (without reversing). It does not require instructions for the driver, i.e. not the driver Studied the operating instructions so that he pressed the button again suppressed; now takes place without his intervention according to claim 4 Deactivation of the "Stop" function of the ÜKB.

In the event of a reset, i.e. when the elec voltage after a power failure occurs according to claim 2, a restoration of normal operation of the Window lifter (i.e. touch and tap operation) only if the - only - button is pressed at least three times and  thereby the disc was always moved into its closed position. Here there is no deactivation of the ÜKB, so that the protection at Pinching is essentially preserved, but that in the eyes view of the first push of a button as it were as serving mo for the area of effectiveness of the ÜKB mentane reference used with the first stroke the disc together with this ÜKB area upwards "ver is pushed ".

An embodiment of the method according to the invention is explained in the following with the aid of the flow charts shown in the drawing, FIG. 1 shows the case of the reset, FIG. 2 shows the special operation case of overcoming stiffness, FIG. 3 shows the subfunction blocking detection and release of the lifting automation and FIG. 4 concern the initialization from the outside using the vehicle key.

At this point it should be inserted that the Er necessary parts and assemblies such as sensors, toughness ler, memory and the like, are commercially available and therefore need not be described.

Referring now initially to the flowchart of FIG. 1, the voltage reset 1 signal has a first consequence that at the actual position of the disc or the Scheibenpositions- movement counter PZ assigns the position 0. The same applies to the release counter FZA for automatic lifting operation. This includes process step 2 . At 3 it is queried whether the ignition key ZS is pivoted into an actuation position (detection of a pulse edge) in which an ignition lock contact has prepared the voltage supply for the window regulator. If this is not the case (F for "fault"), the process is quasi ended; if this is the case (T for "True"), the decision query 4 is made as to whether the driver has activated the lift button. If the answer is positive, the electric motor of the window regulator is switched on in accordance with FIG. 5 (start of the initialization run); the ÜKB is effective, but without the "Reverse" function, so that the upper edge of the pane can run into the seal. At the moment of the reset, this "reversion-free" ÜKB area begins, for example, 4 mm above the upper edge of the pane. If query 6 shows an activation of the ÜKB, be it by an obstacle or by reaching the final height position of the pane, the motor is switched off according to FIG. 7 and PZ is set to 0, ie there is a reference shift upwards. If the ÜKB is not yet activated when the button is pressed, then after checking (step 8 ) the operating position of the ignition key ZS, a check is carried out in step 9 as to whether the button is still pressed (in step 4 , on the other hand, the activation process of the button was detected by sensory detection a corresponding pulse edge). If the button is no longer pressed, step 7 follows; If the button is still pressed, the last process steps are repeated until at least once the ÜKB and finally the blocking detection (third signal) responds when the final altitude is reached. The blocking detection will be explained later with reference to FIG. 3. According to the invention, a multiple response to the blockage detection after a corresponding number of key presses is used as an indication that the disk has reached its highest position. This means that normal "reference conditions" are again present, and the method releases normal operation of the window lifter again. If this has automatic lifting, an enable signal is generated for it via its enable counter FZA.

If the ignition key is not in the sense of the voltage supply to Electric motor is actuated, expediently causes each Pressing a fourth signal that only limited disks allows stroke movements, according to each of the disc position counter PZ is reset.

The prerequisite is, of course, that the disc is in the chip Reset in an at least partially open position place.  

Fig. 2 deals with the case of the occurrence of the special operation if "stiffness".

At 20 , the decision is made as to whether the lift button is activated; again the edge of a corresponding electrical pulse is detected. If the result is positive, the electric motor of the window regulator is switched on according to FIG. 21. If it is found that the lift button has been activated for a long time (decision query 22 ), i.e. it is a continuous key, that the pane is also not in the entry area of the upper pane seal (query 23 ), and query 24 activates it the ÜKB, the disk is stopped and reversed (method step 25 ) at an obstacle causing the sluggishness of the disk.

If, on the other hand, the decision query 22 shows only a short actuation of the key or the query 23 a height position of the upper edge of the disk in the seal inlet, then according to 26 normal operation with blocking detection, automatic start-up or engine shutdown takes place.

If one further considers the case where there is a difficulty with reversing by ÜKB, then after reversing after determining that the automatic lifting operation is enabled (query 27 ) and that the ignition switch ZS is in its predetermined actuation position (query 28 ), in method step 29 the start of a time measurement. Only if the query 30 shows that after the end of the first continuous scan (query 22 ) in this embodiment less than 5 seconds have passed until the initiation of the second continuous scan (detection of the edge of a corresponding electrical pulse at 31) is carried out in the method step 32 the motor is switched on again. If this time condition is not met, the special function "Overcoming stiffness" is left in accordance with step 33 .

The prerequisite for this mode of operation is always the position of the ignition key ZS in its predetermined operating position. If query 28 shows that this is not the case, the engine is switched off in method step 34 . At the same time, a time measurement is started and in queries 35 and 36 it is determined whether or not the key has been pivoted into this position within a period of time of one minute in this exemplary embodiment. If this time condition is not met, the process step 33 is activated again.

Looking further at the case of the second key activation 31 , which has led to the activation of the motor 32 , a check is made at 37 as to whether it is a continuous keying which should normally lead to the automatic lifting operation of the pane or just a tap which leads to a relatively small height adjustment of the pane in normal operation. If it is a continuous key and query 38 results in the activation of the ÜKB, although the upper pane edge is not in the seal inlet (query 39 ), the motor is stopped at 40 by the ÜKB, but not reversed; a time measurement is also started. While the pane was both stopped and reversed during the first continuous keying on the obstacle (method step 25 ), after the second keying in method step 40 there is only a stopping, but no reversing.

If it is now determined in decision queries 41 and 42 that in this exemplary embodiment the lift key is activated again after a maximum of 5 seconds, that is to say a third continuous key has been started, the engine is not only switched on according to method step 43 , but the ÜKB with both functions of activated, so that now the motor with maximum possible force pushes the disc through the obstacle causing the obstacle until it comes to blocking detection 44 ; the signal of the blockage detection is used in the process according to the invention for the transition to normal operation.

The blocking detection ( FIG. 3) takes effect when a Hall sensor (or another sensor) does not generate any speed signals for the motor with a switched motor for a period of, for example, 500 ms. The engine standstill is determined in query step 50 ; then the engine is turned off according to 51. If, on the other hand, there is no engine standstill and the disk position counter PZ in query 52 provides a signal that the disk is a certain amount, for example 4 millimeters, above the reference, this is done in step 53 by the method according to the invention in this embodiment Locking the automatic lifting and, according to 54, an initialization run with ÜKB when the reversing function is deactivated, as has already been described with reference to FIG. 1. In the case of other pane positions, on the other hand, query 55 determines whether the key operation has ended; if this is the case, the motor is switched off and a query is made in step 56 as to whether the release counter FZA has released the automatic lifting mechanism or not. If the answer is positive, the reference correction function is carried out according to 57 after the upper pane edge has entered the seal, so that a correction with regard to dimensional changes occurring during operation is ensured.

If the automatic lifting system is not released, query 58 determines whether the disk has entered a "catch area" for the release of the automatic lifting operation or not. Each entry is counted by means of the FZA (step 59 ), and if an entry into this catch area has taken place at least twice (query 60 ), a release signal for the automatic lifting system is issued (method step 61 ).

As far as the method according to the invention has been explained so far, it referred to the actuation of the window regulator from inside the vehicle. Fig. 4 shows the actuation of the window lifter even in special operating cases in a vehicle with central locking (SSZ) from the outside via a key switch.

The query 70 serves to determine whether the central locking SSZ is activated or not; this query can work with a response delay of, for example, one second. Then, in step 71, the motor is switched on and the ÜKB is deactivated, ie the pane is lifted without the ÜKB until the motor is stopped in query 72 . If there is a standstill, the motor is switched off in accordance with method step 73 and the query 74 ascertains whether the upper edge of the pane is in a height range that extends, for example, 6 millimeters below the reference. Then the position counter PZ is reset and the automatic lifting is released in accordance with step 75 .

Like this description of an embodiment of the Er shows, it relates to a process that is done without intervention Operator in special operating cases automatically one Restoring normal operation of the window regulator performs.

Claims (7)

1. Method for operating an electromotive window regulator for a Motor vehicle in which after pressing a button for Disc stroke movement the reaching of the disc closing position by a Engine standstill sensor is determined and an automatic Excess force limitation is provided, a stop and when activated a direction reversal of the disk stroke movement is triggered, and in which Signals to restore normal operation in special operating cases such as Termination of a power failure are generated, and at which to Saving another button for the establishment of normal operation first Signals that represent the special operating cases and second signals, the predefined Sequences of pressing the button to restore normal operation represent, a storing engine control are supplied.   2. The method according to claim 1, characterized in that in the Motor control after termination of a voltage failure on Incoming electric motor after more than a second signal the third signal restores normal operation. 3. The method according to claim 2, characterized in that in the Engine control at least in the case of non-actuation of the Ignition key a fourth signal is generated, the Be actuation of the button only a limited disk stroke movement  after which a disc position counter is reset becomes. 4. The method according to claim 1, characterized in that at a stiff movement in the engine control result from a second continuous keying of the button the second signal a deactivation signal for the function Reversal of direction and from a third continuous key resulting second signal additionally a deactivation signal for the function stopping the lifting movement until on hit a third signal or until the end of third continuous key are generated, causing both desacti provisions are canceled. 5. The method according to claim 4, characterized in that the Motor control only generates the deactivation signals if the three continuous keyings follow each other immediately and / or within predetermined ones, by the respective first ongoing interruption of the lifting movement of triggered periods respectively. 6. The method according to claim 4 or 5, characterized in that if it is pressed after the first continuous key the ignition key deactivation signals by further Continuous keying can only be generated when actuated of the ignition key and the second continuous key within one predetermined period of time after the first continuous key he consequences. 7. The method according to claim 1, characterized in that by Permanent operation of a door lock that is only accessible from the outside in any case a disc stroke movement up to End of continuous keying or until generation of a third signal is caused, whereby a reset signal is fed to a disc position counter.