DE10028490A1 - Power window for motor vehicles, has motor rotation drive circuit to change rotation direction of window opening-closing motor corresponding to manual operation of window open and close switches - Google Patents

Abstract

A motor rotation drive circuit (15) changes rotation direction of a motor (12), corresponding to manual operation of window open and closed switches (7D,7U). A vehicle sinking detector (17) outputs a sinking detection signal during sinking of vehicle in water. A power supply cut circuit (18) severs power supply to window closed relay (13U) of drive circuit, when sinking detection signal is output.

Description

The invention relates generally to electric windows for Motor vehicles, in particular an emergency locking lock for electric vehicles Window lifter, which prevents the window from closing mechanically, when the vehicle is flooded and / or when an object is caught between the window and the frame.

Generally, an electric window system includes one Motor vehicle operated from the driver's seat Actuator, also controls that by Passenger seat from the right rear seat and from the left rear seat are reachable. The control unit located in the driver's seat contains at least one opening switch for the one located in the driver's seat Window, a closing switch for this window, a switch for Opening the passenger window, a closing switch for the passenger Window, an opening switch for the right rear window, one Closing switch for this right rear window, an opening switch for the left rear window and a closing switch for the left rear window, plus an opening / closing motor for the window on Driver's seat and a motor driver circuit for controlling the motor, so that this corresponds to the window located in the driver's seat Actuation of the one used to close and open this window Switch.

The control unit for the front passenger window, the control unit for the right rear window and the control unit for the left rear window each contain at least one window opening switch, one  Window closing switch, a window operating motor for Open / close the relevant window and one Motor driver circuit for driving the motor in question, so this the window according to the actuation of the window The opening switch or the window closing switch opens or closes.

In a conventional electric window system, the Driver the opening switch for the window in the driver's seat or the corresponding closing switch assigned to the driver Operate the window control unit so that the window is on the driver's seat opens or closes depending on how the driver wishes. Presses the driver uses the opening switch for the passenger window or the Lock switch for this window, so this opens or closes Window accordingly. The same applies to the other windows and their control units: if the driver presses the opening switch for the Window at the rear right or the associated closing switch actuated, the right rear window opens or closes this window. The driver presses the opening switch or the closing switch for the left rear window, this window opens or closes this window. If a passenger from the seat Opening switch or the closing switch for the passenger window actuated, the passenger window opens or closes. When a Passenger in the rear right seat the opening switch or closing switch actuated, opens or closes for the right rear window Window. If a passenger is seated in the rear left of the opening switch or the closing switch for the window on the left rear seat actuates, opens or closes this window.  

If in the conventional electric window lift system Vehicle is flooded with water, for example when falling into a Waters or in the event of a flood, so will the driver's seat or on the front passenger seat as well as those in the rear seats Control units for the corresponding windows, which are in the Door panels are located, detrimental to the ingress of water influenced. Water can very easily get into the window opening and Penetrate lock switch. In this case it may happen Water between open contacts of the switches, so that between these switches have a relatively low resistance Connection comes about, although the contacts are open take in. This will result in the respective opening and Lock switches for the windows to malfunctions.

If in such a flood condition a passenger in the Vehicle tries to open the window by hand relevant window opening switch in the control unit near it pressed, the window may not be as expected Open way. This prevents the occupant from being flooded Vehicle can escape.

In order to eliminate or at least alleviate the above problem, was a waterproof electric window system for Motor vehicles suggested that at least either the Operating unit on the driver's seat or an operating unit on one of the remaining seats are protected against the ingress of water.

Such a water-protected electrical window lift system is such trained that the normally closed contacts of a  Window opening switch and a window closing switch with mass are connected. If a vehicle is flooded and water enters the Opening switch and / or the closing switch on, so the water cause a short circuit between the open contacts. But even in this state, current flows from the voltage source through the normally closed contacts to ground and prevents the motor is connected to the voltage source. If the Passenger a window opening switch located nearby presses, the motor turns normally and opens the window. Within a certain period of time after the flooding occurs Vehicle occupants at least the driver's window or one of the rest Open the window by opening the window Opening switch operated by hand so that the vehicle occupant from the open window can get out of the vehicle.

With conventional electric window regulators it can happen that part of a human body, for example one or more Fingers pinched between the window and the window frame when the window is closed.

Such a pinching has been prevented by the applicant electric window regulator system with a pinch detector circuit to detect an object stuck in the window proposed, the device at least in the control unit on Driver window or is present in one of the other control units.

In such an electrical jamming preventing Window lift system a jammed object is detected, while the motor is closing the window in a certain  Direction turns. The pinch detector circuit detects pinching based on a load fluctuation of the engine and gives a corresponding Detector signal off. The direction of rotation of the window closing The engine will then detect a jammed object reversed based on the detector signal. Alternatively, the rotation of the Engine stopped. This will open a window Jammed object between himself and the window frame, forcibly opened or stopped in its closing process when the detector signal is detected so that damage is prevented become.

In the case of the above-mentioned, secured against ingress of water Electric window lift can pull a passenger out of a flooded Vehicle through an open window within a short period of time escape after the onset of flooding. If the vehicle is in If the passenger compartment is flooded, the window closing switch is located on Driver's seat in a state in which it is connected to a voltage source connected is. As a result, the motor is driven unnecessarily, so that the opening / closing of the window becomes unstable.

In the pinching prevention device Object between window and window frame become people Damage and injury protected. However, this works Protection mechanism no longer in a flooded vehicle. Accordingly, it can do so in a flooded vehicle come that an object, especially a body part of a person, between a window and a window frame.  

So far, there is no electric window system in which Countermeasures both against adverse effects in the event of flooding also against the jamming of an object between the window and Window frames are hit, since it was previously assumed that the related manufacturing costs would be too high and the associated Circuit would be too complex.

It is an object of the present invention to provide an electrical To create window lift system, which is activated by pressing a Opening switch even then reliably for opening a window suitable if the system installed in a vehicle is exposed to water is washed over.

It is also an object of the invention to provide an electric window lift system to create for a motor vehicle, with which there is also between Window and window frame jammed object in the window stops or reverses its closing movement, even if that Vehicle is flooded with water. Another object of the invention is the creation of an electric window regulator with countermeasures against disturbances caused by penetrating water and jammed Objects with simplified and cheaper circuitry.

In a first aspect, the present invention provides an emergency Locking device for electric windows with the characteristics of Claim 1.

In a second aspect, the invention provides an electrical one Window lifter system with the features of claim 2.  

In a third aspect, the invention provides an electrical one Window lifter system with the features of claim 3.

Advantageous embodiments are in the dependent claims specified.

The present invention enables a vehicle occupant from the flooded vehicle through a nearby open window escape. A closed window will be reliable opened by appropriate switching operations, thereby a Pinching between window and window frame reliably prevented. In addition, various problems related to the Pinching a body part or an object between windows and window frames fixed. A malfunction of a window closing relay can not take place.

In the following, exemplary embodiments of the invention are described with reference to the Drawings explained in more detail. Show it:

Figure 1 is a circuit diagram of basic parts of a first embodiment of an electric window system for a motor vehicle according to the invention.

FIG. 2 shows a circuit diagram of the detailed structure of a window operating unit on the driver's seat for the electric window lift system shown in FIG. 1;

Fig. 3 is a circuit diagram showing the detailed construction of a window operator unit for the front passenger seat of the power window apparatus shown in Fig. 1;

Figure 4 is a circuit diagram showing the detailed structure of a window control unit when the driver's seat in a second embodiment of the power window system of the invention. and

Fig. 5 is a circuit diagram of the detailed structure of a driver's seat window operating unit in a third embodiment of the power window system according to the invention.

Fig. 1 shows the basic parts of a first embodiment of an electric window lift system according to the invention. The first embodiment of the invention of an electric window lift system for a motor vehicle, shown in FIGS. 1 to 3, contains a flood detector circuit and a pinch detector circuit.

Referring to FIG. 1, the first embodiment of the power window system includes a window control unit 1 for the driver's seat, a window operator unit 2 for the front passenger seat, a window control unit 3 for the right rear seat, a window adjustment unit 4 for the seat back left and a bus line. 5

Referring to FIGS. 1 and 2, the window control unit for the driver's seat includes a bus line connection 6, a space formed by a circuit with two contacts driver's seat window-opening switch 7 D, a driver's seat formed by a circuit with two contacts window-closing switch 7 U, a passenger-seat window opening / closing switch 8, a window opening / closing switch 9 for the rear right seat, a window opening / closing switch 10 for the rear left seat, an automatic switch 11 , a window opening / closing motor 12, a motor rotation direction change-over relay 13 , a control unit (CPU ) 14 , a motor driver control unit 15 , an interface (IF) 16 , a flood detection circuit 17 , a voltage isolation circuit 18 , a pinch detector circuit 19 and a supply voltage connection 20 .

The motor rotation switching relay 13 includes a window closing relay 13 U, formed by a circuit with two contacts, and a window opening relay 13 D, formed by a circuit with two contacts. The motor driver control circuit 15 contains transistors 15 ₁ U and 15 ₂ U for connecting the window closing relay 13 U to the supply voltage connection 20 , transistors 15 ₁ D and 15 ₂ D for connecting the window opening relay 13 D to the supply voltage connection 20 , and two buffer diodes 15 D ₁ and 15 D ₂ . The flooding detector circuit 17 includes a flood sensor 17 S, a flooding detector transistor 17 T _1, and a bypass transistor 17 T _2. The voltage isolation circuit 18 includes a voltage isolation relay formed by a circuit with two contacts. The pinch detector circuit 19 detects the occurrence of pinching through a window and is constituted by two switches shown in FIG . The components 6 , 7 D, 7 U and 8-20 , which form the driver's seat window operating unit 1 , are connected in the manner shown in FIGS. 1 and 2.

Referring now to FIGS. 1 and 3 Referring which Passenger's a passenger-seat window-closing switch includes window control unit 2 21 U, formed by a two contacts having circuit, a passenger-seat window-opening switch 2 ₁ D of a circuit with two contacts, a window opening / closing motor 22, a motor rotation direction change-over relay 23 , a control device (CPU) 24 , a motor driver control circuit 25 , an interface (I / F; interface) 26 , a bus line connection connection 27 , a flood detection circuit 28 , a voltage isolation circuit 29 , one Pinch detector circuit 30 and a power supply terminal 31 .

The motor rotation direction change-over relay 23 contains a window closing relay 23 U from a circuit with two contacts and a window opening relay 23 D from a circuit with two contacts. The motor driver control circuit 25 contains transistors 25 ₁ U and 25 ₂ U for connecting the window closing relay 23 U to the voltage supply connection 31 , transistors 25 ₁ D and 25 ₂ D for connecting the window opening relay 23 D to the voltage supply connection 31 , and two buffer diodes 25 D ₁ and 25 D ₂ . The flooding detector circuit 28 includes a flood sensor 28 S, a flooding detector transistor 28 T _1, and a bypass transistor 28 T _2. The voltage isolation circuit 29 includes a voltage isolation relay made of a two-contact circuit. The pinch detector circuit detects the occurrence of pinching through a window and is represented by two switches shown in FIG . The components 21D, 21U and 22-31, which form the passenger seat window operating unit 2 , are interconnected in the manner shown in FIGS. 1 and 3.

Although in Fig. 1, the detailed circuitry for the window operation unit 3 and the window control unit 4 of the right and left rear seat are not shown, they have the same structure as the front passenger's seat window operation panel 2 shown in Fig. 3.

Still referring to Fig. 1, the bus line 5 connects the bus line connection terminal 6 of the driver seat window operating unit 1 , the bus line connection terminal 27 of the front passenger window operating unit 2 , a bus line connection terminal (not shown) of the window operating unit 3 for the rear seat right and a bus line connection connector (not shown) for the window operating unit 4 of the rear left seat.

The operation of the first embodiment of FIG Electric window system according to the invention described.

First of all, the operation of the system should be described in the event that the vehicle assumes a normal operating state (that is, if the vehicle is not flooded inside and no object or body part is caught by the window). In this state, the flood detector circuit 17 is not in operation and the relay of the voltage isolation circuit 18 is not operating. Consequently, the relay makes the contact shown in Fig. 1 by a solid line.

When the driver presses the driver's seat window closing switch 7 U in the driver's seat window operating unit 1 , the contact of the window closing unit 7 U is switched from the state indicated by a solid line to the state according to the broken line. A positive voltage at the supply connection 20 passes through the switched driver's seat window closing switch 7 U and the buffer diode 15 D ₁ to the window closing relay 17 U of the motor rotation direction change-over relay 13 , in order thereby to make contact of the window closing relay 13 U from the state shown by a solid line switch shown in FIG. 2 in a direction indicated by a broken line state. In this state, the positive voltage from the supply connection 20 reaches the window opening / closing motor 12 via the switched contact of the window closing relay 13 U. This in turn rotates the window opening / closing motor 12 in a direction in which the window in the driver's seat is closed .

If the driver presses the window opening switch 7 D of the window operating unit 1 at the driver's seat, then the contact of the window opening switch 7 D is changed from the state shown in solid lines to the state shown in dashed lines. The positive voltage at the supply connection 20 passes through the switched window opening switch 7 D on the driver's window and the buffer diode 15 D ₂ to the window opening relay 13 D of the motor rotation switching relay 13 and thus switches the contact of the window opening relay 13 D from the state shown in the solid state in FIG. 2 in the state shown there by a dashed line. In this state, the positive voltage from the supply terminal 20 passes through the switched contact of the window-opening relay 13 to the motor D 12th This rotates the motor 12 in the other direction, which opens the driver's seat window.

If the driver simultaneously actuates the window lock switch 7 U in his driver's seat and the automatic switch 11 in the window operating unit 1 of the driver's seat, the driver's window lock switch 7 U is switched from the state indicated by the solid line to the state indicated by the broken line. As explained above, the positive voltage at the supply connection 20 is given via the window closing switch 7 U at the driver's seat and the buffer diode 15 D ₁ to the window closing relay 13 U of the motor rotation direction changeover relay 13 . If the actuation of the window closing switch 7 U at the driver's seat is ended, the contact is changed from the state according to the broken line to the state shown by a solid line. In contrast, the operation of the automatic switch 11 enables a control voltage from the control unit 14 to be applied to the transistor 15 ₂ U, as a result of which this transistor, like the transistor 15 ₁ U, becomes conductive. The positive voltage at the supply connection 20 reaches the window closing relay 13 U of the motor rotation direction change-over relay 13 via the conductive transistor 15 ₁ U, and the motor 12 rotates continuously in one direction. This state remains until the driver seat window is completely closed.

If the driver presses the window opening switch 7 D at the driver's seat and the automatic switch 11 of the window operating unit 1 at the same time, the operating sequence is similar to that explained above. This condition is maintained until the driver seat window is fully open.

When the driver presses the opening / closing switch 8 for the passenger window on the window operating unit 1 at the driver's seat and switches the contact for closing the window, the control unit 14 detects the switching of the contact of the window opening / closing switch 8 of the passenger window and generates a first control signal to close the passenger window. The first control signal is transmitted from the control unit 14 via the interface 16, the Busleitungs- connection terminal 6 and the bus line 5 to the Passenger's window operating unit. 2 The first control signal transmitted via the bus line 5 is received by the bus line connection connection 27 of the passenger seat window operating unit 2 and is applied to the control unit 24 there via the interface 26 . The control unit 24 supplies the transistor 25 ₂ U with a drive signal corresponding to the first control signal in order to make the transistor 25 ₂ U conductive. If the transistor conducts 25 ₂ U, also the transistor conducts 25 ₁ U. As a result, passes the positive voltage from the supply terminal 31 to the window-closing relay 23 and the motor rotation direction change-over relay 23, through the contact of the voltage blocking circuit in which in Fig. 29 3 the position shown in solid lines and the conductive transistor 25 ₁ U, thereby switching the window closing relay 23 U from the state shown in solid lines in FIG. 3 to the state shown in dashed lines. In this state, the positive voltage comes from the supply connection 31 via the window closing contact 23 U of the relay 23 to the window opening / closing motor 22, which consequently rotates in a direction by which the passenger window is closed.

If the driver presses the opening / closing switch 8 for the passenger window on the window operating unit 1 located in the driver's seat and switches the contact to open the window, the control unit 14 detects the switching of the contact of the switch 8 and generates a second control signal for opening the passenger window. The second control signal is transmitted from the control unit 14 via the interface 16, the connection terminal 6 and the bus line 5 to the Passenger's window operating unit. 2 The second control signal transmitted via the bus line 5 is received by the bus line connection connection 27 of the passenger seat window operating unit 2 and is sent to the control unit 24 via the interface 26 . The control unit 24 outputs to the transistor 25 ₂ D a driver signal corresponding to the supplied second control signal, in order to thereby make the transistor 25 ₂ D conductive. If the transistor 25 ₂ D conducts, the transistor 25 ₁ D also does so. The positive voltage at the voltage supply connection 31 reaches the window opening relay 23 D of the motor rotation switching relay 23 via the contact of the voltage blocking circuit 29 and the conductive transistor 25 ₁ D, thereby to switch the contact 23 D from the state shown in solid lines in FIG. 3 to the state shown in broken lines. In this state, the positive voltage from the supply terminal 31 passes through the window opening contact 23 D to the window opening / closing motor 22, so that it rotates in the other direction, whereby the passenger window is opened.

If the driver presses the opening / closing switch 9 for the window on the right rear seat in the window operating unit 1 on the driver's seat and switches the contact, a sequence similar to that which occurs when the contact of the switch 8 for the passenger window is switched, and accordingly the window on the right rear seat is opened or closed.

If the driver presses the opening / closing switch 10 for the window on the left rear seat in the window operating unit 1 on the driver's seat and switches the contact, the procedure is similar to that for switching the switch 8 for the passenger window, and the window on the left becomes as a result rear seat either open or closed.

If, on the other hand, a passenger in the front passenger seat presses the window lock switch 21 U for the front passenger window on the front passenger window operating unit 2 , the window lock switch 21 U is switched from the state shown in dashed lines in FIG. 3 to the state shown in dashed lines. The positive voltage from the supply connection 31 goes via the switched window closing switch 21 U and the buffer diode 25 D ₁ to the window closing relay 23 U of the motor rotation direction changeover relay 23 , as a result of which the window closing contact 23 U from the state shown in broken lines in FIG. 3 to the state shown in broken lines is switched. In this state, the positive voltage reaches the motor 22 from the connection 31 via the switched window closing relay 23 U. This turns in a direction in which the passenger window is closed.

When the passenger in the passenger seat presses the window opening switch 21 D in the passenger seat window operating unit 2 , the contact of the opening switch 21 D switches from the state shown in solid lines in FIG. 3 to the state shown in broken lines. The positive voltage from the terminal 31 is applied to the window opening relay 23 D via the contact of the voltage blocking circuit 29 , the switched window opening switch 21 D at the front passenger seat and the buffer diode 25 D ₂ , causing its contact from the state shown by the solid line to the state shown in broken lines is switched. In this state, the positive voltage from the supply terminal 31 passes through the switched contact of the window opening relay 21 D to the window opening / closing motor 22, which then rotates in the other direction, whereby the passenger window is opened.

When a passenger in the rear right seat presses the window lock switch for the rear right window or the opening switch (not shown in FIG. 1) on the window operating unit for the right rear seat, or if a passenger in the rear left seat presses the window lock switch or the opening switch (in Fig. 1 not shown) of the window operating unit 4 for the seat at the rear left, the same workflow as that takes place when the passenger in the passenger seat actuates the window closing switch 21 U or the opening switch 21 D of the window operating unit 2 . As a result, the window at the rear right or the window at the rear left is either opened or closed.

The following describes what happens when the vehicle is with such an electric window regulator falls into a body of water and its interior becomes flooded, or when the vehicle is flooded by others external influences is flooded.

If the vehicle is flooded, water may enter the door panels on the driver's seat, front passenger seat, right or left rear seat, and this may be done in sequence. As a result, the window control unit 1 in the driver's seat, the window control unit 2 in the front passenger seat, the window control unit 3 in the rear right seat and the window control unit 4 in the rear left seat are flooded.

When the passenger compartment begins to flood and water reaches the conductor pair of the flood sensor 17 S in the flood detector circuit 17 , the resistance on the conductor pair is reduced. This causes a low DC resistance between ground and base of the flood detector transistor 17 T ₁ , consequently this transistor conducts. In this state, the flood detector circuit 17 outputs a flood signal which is approximately equal to the voltage at the voltage supply connection 20 . The flood signal reaches the voltage blocking relay of the voltage blocking circuit 18 and consequently switches the contact from the state shown by a solid line in FIG. 1 to the position indicated by a broken line. Accordingly, the supply of the positive voltage from the power supply terminal 20 to the motor driver control circuit 15 is blocked via the normally closed contact of the voltage blocking relay, and accordingly the application of the positive voltage to the window closing switch 7 U is blocked. In this state, when the driver presses the window opening switch 7 D to open the window, the contact of the window opening switch 7 D is switched from the state shown in FIG. 2 by the solid line to the state according to the broken line. The positive voltage at the supply connection 20 is applied to the window opening relay 13 D via the switched contact of the window opening switch 7 D and the buffer diode 15 D ₂ , so that the contact of the window opening relay 13 D changes from the state shown in FIG. 2 by a solid line to dashed indicated state is switched. Accordingly, the positive voltage from the supply terminal 20 passes through the switched contact of the window-opening relay 13 to the motor D 12th This turns in one direction so that the window at the driver's seat is opened.

If the interior of the window control unit 1 on the driver's seat is flooded and the interior of the window lock switch 7 U is flooded, the insulation between the contacts may not be maintained. In this state, however, there is no malfunction of the window closing relay 13 U, since the connection for the positive voltage at the supply connection 20 to the window closing switch 9 U is already interrupted by the voltage blocking circuit 18 . As a result, the window opening / closing motor 12 rotates reliably in the other direction, so that the window is opened at the driver's seat.

The passenger seat window operating unit 2 , the window operating unit 3 and the window operating unit 4 for the right and left rear seats, respectively, all have a flood detector circuit and a voltage or energy blocking circuit similar to the window operating unit 1 located on the driver's seat. If a flooding is recognized by a window operating unit other than the window operating unit 1 located on the driver's seat, that is, a flooding is detected by the passenger seat window operating unit 2 , the window operating unit 3 in the rear right seat or the window operating unit 4 in the rear left seat, the same occurs Workflow as when detecting a flooding of the window control unit 1 in the driver's seat. As a result, the passenger window, the rear right window or the rear left window is opened.

In the following, the mode of operation of the first embodiment of the electric window regulator for the case that an object or a between a window and the window frame Body part is jammed.

If an obstacle, for example a finger, is pinched between the window and the window frame while the window closing switch 7 U in the driver's seat window operating unit 1 is pressed so that the driver's window is closed, the pinch detector circuit 19 detects this pinching of the finger (or an object) and outputs a pinch detection signal to the control unit 14 . In response to this pinch detection or detection signal, the control unit 14 generates a drive signal to make the bypass transistor 17 T _{2 of} the flood detector circuit 17 conductive. By passing the bypass transistor 17 T ₂ and the flooding detector transistor 17 T ₁ passes and generates a flooding detection signal having a voltage corresponding to the voltage of approximately the power supply terminal 20th The flood detection signal arrives at the voltage blocking relay of the voltage blocking circuit 18 , and the contact is switched from the state shown by a solid line in FIG. 1 to the state shown in broken lines. This disconnects the supply of the positive voltage from the terminal 20 to the motor driver control circuit 15 via the normally closed contact of the voltage blocking relay, and the application of the positive voltage to the window closing switch 7 U is prevented. Accordingly, the supply of the positive voltage of the terminal 20 to the window closing relay 13 U is completely blocked.

This causes the motor 12 to stop rotating so that the window can no longer pinch the object (here: the finger).

When an obstacle is encountered by the moving passenger window while the window lock switch 21 U in the passenger seat window operating unit 2 is pressed, or when an object is encountered as an obstacle by the window at the rear right or rear left, during the window lock switch of the window control unit 3 or of the window operating unit 4 is pressed, the same operation takes place as in the driver's seat window operating unit 1 , which was explained above, consequently the window is prevented from further pinching the object.

If an obstacle is pinched by the driver's window while the automatic operation of the driver's seat window operating unit 1 is running, that is to say while the window closing switch 7 U and the automatic switch 11 are pressed simultaneously, the voltage blocking circuit 18 blocks the voltage supply to the transistor 15 ₁ U and prevents the window from jamming the object. If a foreign object is pinched by the passenger's window while the window opening / closing switch 8 in the driver's seat in the driver's seat window operating unit 1 is pressed so that the passenger's window is closed, the voltage blocking circuit 29 blocks the energy supply to the transistor 25 ₁ U and thus prevents that the window continues to pinch the foreign object.

The control unit 14 in the driver's seat window operating unit 1 can give the pinch detection signal to the bypass transistor 17 T ₂ and a driver signal to the transistor 15 ₂ D in order to make these transistors conductive. In response to the driver signal, the transistor 15 ₂ D, and thereby also the transistor 15 ₁ D conducts. The positive voltage from the supply connection 20 passes through the conductive transistor 15 ₁ D and thus switches the contact of the window opening relay 13 D from that in FIG a solid line indicated state in the state shown in dashed lines. As a result, the positive voltage from the supply connection 20 reaches the motor 12 via the switched contact of the window opening relay 13 D, so that it rotates in the other direction, consequently the driver's window is opened, so that it does not pinch the foreign object. The control unit 24 of the driver's seat window operating unit 2 can handle the same process as the control unit 14 .

The operation of the first embodiment of FIG Electric window system described in the event that a Foreign object gets trapped by a window while at the same time the vehicle is flooded.

If the interior of the vehicle is flooded, an occupant, for example the driver, panics and presses the window closing switch 7 U, as a result of which the opened driver's window is closed. At this point, a part of the driver's body or other object may be between the window and window frame and may be caught. In response to this, the pinch detector circuit 19 carries out the above work sequence, as a result of which the closing process of the driver's window is stopped immediately or the driver's window is opened again.

If the interior of the window closing switch 7 U is flooded by the flooding of the window operating unit 1 located on the driver's seat, so that the insulation between the contacts no longer functions, then the window closing relay 17 U will not malfunction because the positive voltage from the supply connection 20 compared to the window closing switch 7 U has already been disconnected from the voltage blocking circuit 18 . As a result, the window motor 12 rotates reliably in the other direction, so that the driver's window is opened.

If, in the first embodiment of the electric window regulator system according to the invention, the flood detector circuit 17 or 18 in the window control unit 1 on the driver's seat, the window control unit 2 on the front passenger seat, or the window control unit 3 or 4 on the right rear or left rear detects a flooding of the relevant unit and a flooding Detector signal generated, or if the pinch detector circuit 19 or 30 in the relevant unit determines that a foreign object is pinched by the window, the voltage blocking circuit 18 blocks the supply of the positive voltage of the terminal 20 to the window closing switch 7 U and the transistor 15 ₁ U. Therefore, the power window can work correctly in both emergency situations.

FIG. 4 shows the detailed structure of the driver's seat window operating unit 1 of a second embodiment of the power window system according to the invention. The window regulator system of the second embodiment contains only the flood detector circuit.

According to FIG. 4, the driver's seat window operation unit of the second embodiment is different 1 of the first embodiment in that the window operating unit 1 of the second embodiment, not 17 T ₂ of the flooding detector circuit includes the pinching detector circuit 19 and the bypass transistor 17. Other than that, the structure of the window operating unit 1 of the second embodiment is the same as that of the first embodiment.

In Fig. 4 the same components as in Figs. 1 and 2 have the same reference numerals, the description of these components is not repeated.

Although not shown in FIG. 2, the construction of the passenger seat window operating unit 2 of the second embodiment differs from the first embodiment according to FIG. 1 in that the passenger seat window operating unit 2 of the second embodiment does not include the pinch detector circuit 30 and the bypass transistor 28 T _{2 of} the flood detector circuit 28 contains. Except for this, the construction of the passenger seat window operating unit 2 of the second embodiment is the same as that of the first embodiment.

Similarly, the configurations of the window control unit 3 and the window control unit 4 for the rear right and rear left seats are the same as those of the passenger seat window control unit 2 of the second embodiment.

The operation of the driver's seat window operating unit 1 of the second embodiment is the same as that of the first embodiment except for the operation in connection with the pinch detector circuit 19 . Advantages achieved by the driver's seat window operating unit 1 of the second embodiment are the same as in the first embodiment, apart from the advantages in connection with the pinch detector circuit 19 .

Similarly, the advantages for the window operating units 3 and 4 of the rear seats of the second embodiment are the same as in the first embodiment, apart from the advantages in connection with the pinch detector circuit 19 .

For the above reasons, the description of the structure, the method of operation and the advantages of the window control units 1 , 2 , 3 and 4 for the second embodiment are not repeated.

Fig. 5 shows the detailed construction of the driver's seat window operation unit 1 of a third embodiment of a power window system according to the invention. The window regulator system of the third embodiment contains only the pinch detector circuit. Referring to FIG. 5, the window control unit 1 of the third embodiment from that of the first embodiment in that the window operating unit 1 is not the flooding detector circuit with the flood sensor contains 17 S 17 of the third embodiment. Instead, in the driver's seat window operating unit 1 of the third embodiment, the flood detector transistor 17 T ₁ and the bypass transistor 17 T ₂ , which had previously formed the flood detector circuit 17 , are incorporated in a voltage blocking circuit 18 '. Other than that, the structure of the driver's seat window operation unit 1 of the third embodiment is the same as that of the first embodiment.

In Fig. 5 corresponding components as in Figs. 1 and 2 have corresponding reference numerals, the description of these parts is not repeated.

Although in Fig. Not shown 5, the structure of the third embodiment 1 is different passenger-seat window operation unit 2 of the first embodiment of FIG. Characterized in that the operating unit 2 is not the flooding detector circuit 28 with the flood sensor contains the second embodiment 28 S. Instead, in the passenger seat window operating unit 2 of the third embodiment, the flood detector transistor 28 T ₁ and the bypass transistor 28 T ₂ , which had formed the flood detector circuit 28 , are incorporated in an energy or voltage blocking circuit 28 '. Apart from this, the construction of the passenger seat window operating unit 2 of the third embodiment and that of the first embodiment are identical.

Similarly, the configurations of the control unit 3 and the control unit 4 for the window at the rear right and rear left are the same as the configuration of the passenger seat window control unit 2 of the third embodiment.

The operation of the driver's seat window operation unit 1 of the third embodiment is the same as that of the first embodiment, except for the operation in connection with the flood sensor 17 S within the flood detector circuit 17 .

Advantages of the driver's seat window operating unit 1 of the third embodiment arise in the same way as in the first embodiment of the window operating unit 1 , apart from the advantages in connection with the flood sensor 17 S within the flood detector circuit 17 .

Similarly, advantages of the window control unit 3 and the window control unit 4 apply to the rear right and rear left seats of the third embodiment as well as to the window control units 3 and 4 of the first embodiment when considering the advantages in connection with the flood sensor 17 S of the detector circuit 17 refrains.

For the reasons mentioned, a description of the designs, methods of operation and advantages of the driver's seat window operating unit 1 , the front passenger's seat window operating unit 2 , the window operating unit 3 for the rear right seat and the window operating unit 4 for the rear left seat are omitted here.

Claims (6)

1. Electric window system for a motor vehicle, comprising:
a window opening switch ( 7 D) and a window closing switch ( 7 U) for manual operation;
a motor ( 12 ) for opening / closing a window upon rotation of the motor;
motor rotation driving means ( 15 ) for switching the direction of rotation of the motor ( 12 ) in accordance with the operation of the window opening switch ( 7 D) and the window closing switch ( 7 U);
a window opening connector ( 13 D) and a window closing connector ( 13 U) which are driven by the window rotation driver ( 15 ) to be connected to a power source ( 20 ) of a given polarity for an opening direction of the window or a polarity for one Closing direction of the window to be connected;
flood detection means ( 17 ) which outputs a flood detection signal in the event of the vehicle being flooded; and
an energy blocking device ( 18 ) for blocking the supply of energy to the window lock connector ( 13 U) when the flood detection signal is output. 2. Electric window system for a motor vehicle, comprising:
a window opening switch ( 7 D) and a window closing switch ( 7 U) for manual operation;
a motor ( 12 ) for opening / closing a window upon rotation of the motor;
motor rotation driving means ( 15 ) for switching the direction of rotation of the motor ( 12 ) in accordance with the operation of the window opening switch ( 7 D) and the window closing switch ( 7 U);
a window opening connector ( 13 D) and a window closing connector ( 13 U) which are driven by the window rotation driver ( 15 ) to be connected to a power source ( 20 ) of a given polarity for an opening direction of the window or a polarity for one Closing direction of the window to be connected;
pinch detector means ( 19 ) which provides a pinch detector signal when an object is pinched by a window; and
an energy blocking device ( 18 ') for blocking the energy supply to the window closing connection device ( 13 U) when the pinch detector signal is output. 3. Electric window system for a motor vehicle, comprising:
a window opening switch ( 7 D) and a window closing switch ( 7 U) for manual operation;
a motor ( 12 ) for opening / closing a window upon rotation of the motor;
motor rotation driving means ( 15 ) for switching the direction of rotation of the motor ( 12 ) in accordance with the operation of the window opening switch ( 7 D) and the window closing switch ( 7 U);
a window opening connector ( 13 D) and a window closing connector ( 13 U) which are driven by the window rotation driver ( 15 ) to be connected to a power source ( 20 ) of a given polarity for an opening direction of the window or a polarity for one Closing direction of the window to be connected;
flood detection means ( 17 ) which outputs a flood detection signal in the event of the vehicle being flooded;
pinch detector means ( 19 ) for outputting a pinch detector signal when an object is pinched by a window; and
an energy blocking device ( 18 ) for blocking the supply of energy to the window closing connection device ( 13 U) when the flooding detection signal and / or the pinch detection signal is output. 4. The device according to claim 1, wherein the energy blocking device comprises an energy blocking relay ( 18 , 18 '), when actuated the energy supply to the window lock connecting device ( 13 U) and to the window lock switch ( 7 U) is blocked. 5. The device according to claim 2, wherein the energy blocking device comprises an energy blocking relay ( 18 , 18 '), when actuated, the energy supply to the window lock connection device ( 13 U) and to the window lock switch ( 7 U) is blocked. 6. The device according to claim 3, wherein the energy blocking device comprises an energy blocking relay ( 18 , 18 '), when actuated the energy supply to the window lock connecting device ( 13 U) and to the window lock switch ( 7 U) is blocked.