JP2018135726A - Power window device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power window device capable of securing a descending motion of a window while preventing a malfunction and an ascending motion of the window upon submergence.SOLUTION: A power window device 101 includes: a switch device 1 which outputs operation signals having first and second voltage values when descending switches SW 1 and SW 2 and ascending switches SW 3 and SW 4 are operated, respectively, and which outputs a switch submersion detection signal having a third voltage value when a switch submersion detection circuit 11 detects a submergence; and a control device 2 for performing a control for descending and ascending a window glass on the basis of the voltage value of the input operation signal. The control device 2, after the switch submerging detection signal is once input, generates a permit signal without performing the normal time control, and under a state of the permit signal being generated, when the operation signal having the first voltage value from the switch device 1 is input, brings the window glass into its descending motion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power window device, and more particularly to a power window device for opening and closing a window glass of a vehicle by lowering and raising the window glass.

  In a power window device that opens and closes a window of a vehicle by a drive motor (electric motor), the motor is rotated forward or backward to open and close the window in accordance with the operation state of the operation switch. For example, when the operation switch is operated to the ascending side, the motor rotates normally and the window is closed, and when the operation switch is operated to the descending side, the motor reverses and the window is opened. Control of forward and reverse rotation of the motor is performed by switching the direction of the current flowing through the motor in the motor drive circuit based on the operation signal from the operation switch.

  For example, Patent Document 1 discloses a switch device (switch unit) including an operation switch and a control device (motor ECU unit) that controls a motor that drives a window based on an operation of the operation switch in the switch device. A power window device configured on the body is disclosed. If the switch device and the control device are configured separately in this way, when the device fails (especially the switch device tends to fail), the switch device and the control device are separated separately without replacing the entire device. Since it is only necessary to replace it, the repair cost can be reduced.

  On the other hand, in a power window device, it is desirable to prevent malfunctions and the like when the device is flooded. In this regard, in the power window device described in Patent Document 1, measures are taken so that the control device is waterproofed and the window is prevented from being raised or lowered against the operator's intention when wet. By doing so, we are dealing with the wetness of the device.

JP 2004-339708 A

  By the way, in the power window device, especially when the vehicle is submerged, measures are taken to ensure the lowering operation of the window so that the occupant can escape from the vehicle while preventing the malfunction of the device and the raising operation of the window. It is desirable to apply. When the switch device and the control device are configured separately as in the power window device described in the above-mentioned Patent Document 1, the switch device and the control are provided as countermeasures for securing such a window lowering operation. It needs to be applied to both devices. In the power window device described in Patent Document 1, a countermeasure for waterproofing is taken for the control device. However, since it is difficult to completely waterproof, there is a problem in terms of reliability. That is, when water enters without being fully waterproofed, there is a possibility that the lowering operation of the window is not ensured. Moreover, if it is going to strengthen the waterproof measure of a control apparatus, cost will become high.

  The present invention has been made to solve the above-described problems of the prior art, and in a power window device in which the switch device and the control device are configured separately, the control device is not subjected to any special waterproof measures. However, an object of the present invention is to appropriately ensure the lowering operation of the window while preventing malfunction of the device and the raising operation of the window when submerged.

  In order to achieve the above object, the present invention is a power window device for lowering and raising a window glass of a vehicle, and lowering the window glass and raising the window glass. And a switch device that outputs an operation signal having a different voltage value when the lower switch is operated and when the lift switch is operated, and is configured separately from the switch device. And a control device connected by a single signal line, the control device for lowering and raising the window glass based on the voltage value of the operation signal input from the switch device via the signal line. A control device for controlling the drive motor, and the switch device further includes a first switch when the lowering switch is operated. A switch input circuit for outputting an operation signal having a voltage value and outputting an operation signal having a second voltage value different from the first voltage value when the raising switch is operated, and intrusion of water into itself A switch submergence detection circuit that outputs a switch submergence detection signal having a third voltage value different from the first and second voltage values when the first and second voltage values are detected, and the control device further includes a switch input circuit of the switch device. When an operation signal is input, normal control is performed to drive the drive motor so that the window glass is lowered or raised according to the voltage value of the operation signal, and the switch submergence detection circuit of the switch device After the switch submersion detection signal is once input from the control circuit that outputs the predetermined permission signal without performing normal control, the permission signal is input from the control circuit, And a forcible drive circuit that drives the drive motor to lower the window glass when an operation signal having a first voltage value is input from the switch input circuit of the switch device. .

  According to the present invention configured as described above, in the power window device in which the switch device and the control device are configured separately, when the control device receives a switch submergence detection signal from the submergence detection circuit of the switch device. When the operation signal having the first voltage value for lowering the window is input from the switch device in a state where the permission signal is generated without performing the normal time control and the permission signal is generated. Then, the drive motor is driven to lower the window glass. This makes it possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window at the time of submergence, without taking any special measures against waterproofing. In particular, according to the present invention, by providing a forcible drive circuit in the control device, the drive motor is configured to move the window glass downward by the forcible drive circuit without going through the control circuit in the control device when submerged. Can be driven directly. Therefore, even if the control circuit breaks down when submerged, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the rising operation of the window.

In the present invention, it is preferable that the switch input circuit of the switch device forms a first circuit having a first resistance value and outputs an operation signal having a first voltage value when the lowering switch is operated. Configured to form a second circuit having a second resistance value different from the first resistance value when the raising switch is operated, and to output an operation signal having a second voltage value; The switch submergence detection circuit of the switch device forms a third circuit having a third resistance value different from the first and second resistance values when water infiltrates therein, and has a third voltage value. The submersion detection signal is output, and the third voltage value is larger than the first voltage value and smaller than the second voltage value due to the configuration of the switch input circuit and the switch submergence detection circuit of the switch device.
According to the present invention configured as described above, the first and second voltage values of the operation signal output when the switch is operated, and the switch output when the submergence detection circuit detects the ingress of water. Since the switch device is configured so that the third voltage value of the submergence detection signal is different, it is possible to appropriately determine whether the switch device is submerged on the control device side.

In the present invention, preferably, the switch input circuit of the switch device forms the first circuit when the descent switch is operated after the water has entered the switch submergence detection circuit to form the third circuit. While outputting a 1st voltage value, even if a raise switch is operated, it is comprised so that a 3rd voltage value may be output, without forming a 2nd circuit.
According to the present invention configured as described above, when the switch device is submerged, it is possible to reliably prevent the rising operation of the window while ensuring the lowering operation of the window.

In the present invention, preferably, the forcible drive circuit of the control device compares the voltage value of the operation signal input from the switch device with a reference voltage value to detect the operation signal having the first voltage value. When the permission signal is input and the comparison circuit detects an operation signal having the first voltage value, the drive motor is driven so as to lower the window glass.
According to the present invention configured as described above, it is detected by the comparison circuit in the control device that the operation signal having the first voltage value is input to the control device. Even in the case of a circuit failure, the controller can properly determine that the lowering switch has been operated to lower the window.

In the present invention, preferably, the control device further includes a control device submergence detection circuit that detects intrusion of water into the inside thereof, and the control circuit of the control device detects that the control device submergence detection circuit has entered water Sometimes the permission signal is output to the forced drive circuit.
According to the present invention configured as described above, the submergence detection circuit is provided not only in the switch device but also in the control device. Therefore, even if either the switch device or the control device is submerged first, Can be detected. Therefore, even if either the switch device or the control device is submerged first, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window.

  In another aspect, the present invention is a power window device for lowering and raising a window glass of a vehicle, the lowering switch for lowering the window glass, and the raising switch for raising the window glass And a switch device that outputs an operation signal having different voltage values when the lowering switch is operated and when the raising switch is operated, and the switch device and the first signal. A control device connected by a line and a second signal line, wherein the control device receives an operation signal from the switch device via the first signal line, and based on the voltage value of the operation signal, And a control device that controls a drive motor for causing the lowering operation and the raising operation, and the switch device further includes a lowering switch An operation signal having a first voltage value is output to the first signal line when operated, and an operation signal having a second voltage value different from the first voltage value is operated when the raising switch is operated. A switch input circuit that outputs to the signal line, and a switch submergence detection signal having a third voltage value different from the first and second voltage values to the first signal line when water intrusion into the signal line is detected. A switch submergence detection circuit, and the switch input circuit of the switch device further outputs a predetermined signal to the second signal line when the descent switch is operated after the switch submergence detection circuit detects water intrusion. The control device further includes a drive motor for lowering or raising the window glass according to the voltage value of the operation signal when the operation signal is input from the switch input circuit of the switch device. A control circuit that performs normal control to drive and outputs a predetermined permission signal without performing normal control after a switch submersion detection signal is once input from a switch submersion detection circuit of the switch device, and a control circuit A forcible drive circuit that drives the drive motor to lower the window glass when a permission signal is input from the switch signal and a predetermined signal is input from the switch input circuit of the switch device via the second signal line; It is characterized by comprising.

  According to the present invention configured as described above, in the power window device in which the switch device and the control device are configured separately, when the control device receives a switch submergence detection signal from the submergence detection circuit of the switch device. In addition, a permission signal is generated so as not to perform normal control, and the window glass is lowered when a predetermined signal is input from the switch device via the second signal line in a state where the permission signal is generated. The drive motor is driven so that Thereby, even if no special waterproofing measures are taken for the control device, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window when submerged. In particular, according to the present invention, by providing a forcible drive circuit in the control device, the drive motor is configured to move the window glass downward by the forcible drive circuit without going through the control circuit in the control device when submerged. Can be driven directly. Therefore, even if the control circuit breaks down when submerged, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the rising operation of the window.

In the present invention, it is preferable that the switch input circuit of the switch device forms a first circuit having a first resistance value and outputs an operation signal having a first voltage value when the lowering switch is operated. Configured to form a second circuit having a second resistance value different from the first resistance value when the raising switch is operated, and to output an operation signal having a second voltage value; The switch submergence detection circuit of the switch device forms a third circuit having a third resistance value different from the first and second resistance values when water infiltrates therein, and has a third voltage value. The submersion detection signal is output, and the third voltage value is larger than the first voltage value and smaller than the second voltage value due to the configuration of the switch input circuit and the switch submergence detection circuit of the switch device.
According to the present invention configured as described above, the first and second voltage values of the operation signal output when the switch is operated, and the switch output when the submergence detection circuit detects the ingress of water. Since the switch device is configured so as to be different from the third voltage value of the submergence detection signal, it is possible to appropriately determine whether the switch device is submerged on the control device side.

In the present invention, it is preferable that the switch input circuit of the switch device outputs a predetermined signal to the second signal line when the lower switch is operated after the switch submergence detection circuit detects water intrusion, Even when the switch is operated, a predetermined signal is not output to the second signal line.
According to the present invention configured as described above, when the switch device is submerged, it is possible to reliably prevent the rising operation of the window while ensuring the lowering operation of the window.

  According to the present invention, in a power window device in which the switch device and the control device are configured separately, the device malfunctions and the window rises when the control device is submerged without taking any special waterproof measures. Thus, it is possible to appropriately ensure the lowering operation of the window.

1 is a circuit diagram of a power window device according to a first embodiment of the present invention. It is a figure which shows a circuit state when the switch apparatus of the power window apparatus by 1st Embodiment of this invention is submerged previously. It is a figure which shows a circuit state when the control apparatus of the power window apparatus by 1st Embodiment of this invention is submerged previously. It is a time chart which shows the change of the voltage value when switching on / off of each switch at the time of normal time and submergence in the power window device by a 1st embodiment of the present invention. It is a circuit diagram of a power window device according to a second embodiment of the present invention. It is a figure which shows a circuit state when the switch apparatus of the power window apparatus by 2nd Embodiment of this invention is submerged previously. It is a figure which shows a circuit state when the control apparatus of the power window apparatus by 2nd Embodiment of this invention immerses previously.

  Hereinafter, a power window device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

<First Embodiment>
First, the configuration of the power window device according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a circuit diagram schematically illustrating a power window device according to a first embodiment of the present invention.

  As shown in FIG. 1, the power window device 101 according to the first embodiment is configured separately from the switch device 1 including a plurality of switches SW1 to SW4, and the switch device 1 and one signal line. 3 and a drive motor 4 that is controlled by the control device 2 and moves the vehicle window (not shown) downward and upward.

  The switch device 1 has a switch SW1 for automatically lowering the window (in other words, lowering the window all at once), and a switch for manually lowering the window (in other words, lowering the window stepwise). SW2, a switch SW3 for automatically raising the window (in other words, raising the window at once), and a switch SW4 for manually raising the window (in other words, raising the window in stages) Have. The switches SW1 and SW2 correspond to an example of a descending switch in the present invention, and the switches SW3 and SW4 correspond to an example of an ascending switch in the present invention.

  The switch SW1 has one end connected to the signal line 3 and the other end connected to the ground via the ground line GL1. One end of the switch SW2 is connected to the signal line 3 through the resistor R1, and the other end is connected to the ground through the ground line GL1. The switch SW3 has one end connected to the signal line 3 via resistors R1, R2, and R3, and the other end connected to the ground via a ground line GL1. The switch SW4 has one end connected to the signal line 3 via resistors R1, R2, R3, and R4, and the other end connected to the ground via a ground line GL1.

  Thus, by providing the resistors R1 to R4 between the switches SW1 to SW4 provided in parallel, the resistance value of the circuit formed when each of the switches SW1 to SW4 is turned on is changed. Specifically, when the switch SW1 is turned on, a circuit that does not include the resistors R1 to R4 is formed, when the switch SW2 is turned on, a circuit that includes the resistor R1 is formed, and when the switch SW3 is turned on, the resistors R1 to R1 are formed. A circuit including R3 is formed, and when the switch SW4 is turned on, a circuit including resistors R1 to R4 is formed. Thereby, when each of the switches SW1 to SW4 is turned on, the potential of the signal line 3, that is, the voltage value of the operation signal output to the control device 2 via the signal line 3 is changed. Here, when the voltage values of the operation signal output to the control device 2 when each of the switches SW1 to SW4 is turned on are expressed as V1 to V4, the relationship between these voltage values V1 to V4 is “V1 <V2. <V3 <V4 ". The voltage values V1 and V2 correspond to an example of the first voltage value in the present invention, and the voltage values V3 and V4 correspond to an example of the second voltage value in the present invention. The switches SW1 to SW4 and the resistors R1 to R4 correspond to an example of a switch input circuit in the present invention.

  Furthermore, the switch device 1 has a submergence detection circuit 11 (corresponding to a switch submergence detection circuit) configured to be able to detect intrusion of water into the device itself. The submergence detection circuit 11 includes two spaced pads (corresponding to two electrodes as conductors). When water enters the interior, the water is filled between the two pads, Through the flow of current, the intrusion of water into itself (corresponding to the submersion of the switch device 1) can be detected. The submergence detection circuit 11 has one end connected to the ground and the other end connected to the base of the transistor Q1 via the resistor R5. The emitter of the transistor Q1 is connected between the switch SW1 and the signal line 3. ing. A resistor R6 is further connected between the base and emitter of the transistor Q1. The collector of the transistor Q1 is connected to the base of the transistor Q2 via the resistor R7, and the collector of the transistor Q2 is connected between the resistor R2 and the resistor R3. In addition, the emitter of the transistor Q2 is connected to the ground via the ground line GL1, and a resistor R8 is further connected between the base and emitter of the transistor Q2.

  With such a circuit configuration, when the submergence detection circuit 11 detects the entry of water, that is, when the two pads become conductive due to the water that has entered the submergence detection circuit 11, the transistor Q1 is turned on, whereby the transistor Q2 Is also turned on. As a result, the resistance R2 and the resistance R3 are connected to the ground. This corresponds to turning on a virtual switch (transistor Q2) between the switches SW2 and SW3 provided in parallel. Therefore, when the voltage value of the signal (switch submergence detection signal) output from the switch device 1 to the control device 2 via the signal line 3 when the transistor Q2 is turned on is V5, this voltage value V5 The relationship between the voltage values V1 to V4 is “V1 <V2 <V5 <V3 <V4”. This is because when the transistor Q2 is turned on, a circuit including resistors R1 and R2 is formed. The voltage value V5 corresponds to an example of a third voltage value in the present invention.

  Next, the control device 2 receives an operation signal from the switch device 1 through the signal line 3, and based on the voltage value of the operation signal, a control circuit 21 that performs control to lower and raise the window glass, and this A motor drive circuit 26 that drives the drive motor 4 under the control of the control circuit 21; and a submergence detection circuit 27 (corresponding to a control device submergence detection circuit) configured to be able to detect intrusion of water into itself. The comparison circuit 28 that detects the operation signal having the voltage value V1 or V2 by comparing the voltage value of the operation signal input from the switch device 1 with the reference voltage value, and the control circuit 21 and the submergence detection circuit 27 AND circuit 22 connected, AND circuit 24 connected to submergence detection circuit 27 and comparison circuit 28, OR circuit 23 connected to control circuit 21 and AND circuit 24, Having. A power supply B1 (for example, 5V or 12V) is connected between the control circuit 21 and the signal line 3 via a resistor R9, and a power supply B2 is connected to the comparison circuit 28 via a resistor R10 (this). The resistor R10 is further connected to the ground via the resistor R11). The submergence detection circuit 27 has the same configuration as that of the submergence detection circuit 11 described above, and can detect intrusion of water into itself (corresponding to submersion of the control device 2).

  When the control circuit 21 is in a normal state (meaning that the switch device 1 or the control device 2 is not submerged. The same applies hereinafter), the voltage value of the operation signal input from the switch device 1 is V3 or V4. In other words, when the switch SW3 or SW4 for raising the window is operated, a signal for raising the window is output to the AND circuit 22. The AND circuit 22 raises the window when a signal for raising the window is input from the control circuit 21 and a signal indicating that the submergence detection circuit 27 does not detect the entry of water is inputted. A signal for operation is output to the motor drive circuit 26. At this time, the motor drive circuit 26 drives the drive motor 4 so as to raise the window. Specifically, the motor drive circuit 26 drives the drive motor 4 so as to raise the window in a manner corresponding to the magnitude (V3 or V4) of the operation signal input to the control circuit 21. To do.

  Further, in the normal state, the control circuit 21 operates when the voltage value of the operation signal input from the switch device 1 is V1 or V2, that is, when the switch SW1 or SW2 for lowering the window is operated, Is output to the OR circuit 23. The OR circuit 23 outputs a signal for lowering the window to the motor drive circuit 26 when a signal for lowering the window is input from the control circuit 21. At this time, the motor drive circuit 26 drives the drive motor 4 so as to lower the window. Specifically, the motor drive circuit 26 drives the drive motor 4 to lower the window in a manner corresponding to the magnitude (V1 or V2) of the operation signal input to the control circuit 21. To do.

  On the other hand, when the switch submergence detection signal having the voltage value V5 is input from the switch device 1, that is, when the submergence detection circuit 11 of the switch device 1 detects the ingress of water, the control circuit 21 detects the submergence detection circuit 27. The submergence detection circuit 27 outputs a permission signal to the AND circuits 22 and 24 at this time. Once the switch submergence detection signal having the voltage value V5 is input from the switch device 1, the control circuit 21 is configured as described above even if the operation signal having the voltage values V1 to V4 is input from the switch device 1 thereafter. The control according to the operation signal in the normal time (normal control) is not performed. The submergence detection circuit 27 also outputs a permission signal to the AND circuits 22 and 24 when it detects intrusion of water into itself. When the permission signal is input from the submergence detection circuit 27 (that is, when the signal indicating that the submergence detection circuit 27 has not detected the ingress of water has not been input), the AND circuit 22 is not limited to the control circuit 21. Even if a signal for raising the window is input, a signal for raising the window is not output to the motor drive circuit 26.

  On the other hand, in addition to the permission signal, the AND circuit 24 receives the operation signal from the comparison circuit 28 when the comparison circuit 28 detects an operation signal having the voltage value V1 or V2. The AND circuit 24 inputs a signal for lowering the window to the OR circuit 23 when the permission signal is input from the submergence detection circuit 27 and the operation signal having the voltage value V1 or V2 is input from the comparison circuit 28. Output. Even if the signal for lowering the window is not input from the control circuit 21, the OR circuit 23 drives the motor when the signal for lowering the window is input from the AND circuit 24. It outputs to the circuit 26. At this time, the motor drive circuit 26 drives the drive motor 4 so as to lower the window. The OR circuit 23, the AND circuit 24, and the comparison circuit 28 correspond to an example of a forced drive circuit in the present invention.

  Next, with reference to FIGS. 2 and 3, the operation when the power window device 101 according to the first embodiment of the present invention is submerged will be described in detail.

  FIG. 2 is a diagram illustrating a circuit state when the switch device 1 of the power window device 101 according to the first embodiment of the present invention is submerged first. As shown in FIG. 2, when the submergence detection circuit 11 of the switch device 1 detects the ingress of water, that is, when the two pads are conducted by the water that has entered the submergence detection circuit 11, the transistor Q1 is turned on, Thereby, the transistor Q2 is also turned on. As a result, the resistance R2 and the resistance R3 are connected to the ground. Thus, when the transistor Q2 is turned on (assuming that the switches SW1 to SW4 are turned off), a switch submergence detection signal having a voltage value V5 different from the voltage values V1 to V4 of the operation signal described above is 1 to the control device 2 via the signal line 3.

In addition, in the state where the transistor Q2 is turned on as described above, even if the switches SW3 and SW4 are turned on, the operation signal having the voltage values V3 and V4 is not output from the switch device 1, and the voltage value is output from the switch device 1. The switch submergence detection signal having V5 continues to be output. The circuit formed when the switches SW3 and SW4 are turned on is a circuit to which resistors R3 and R4 are added as compared with the circuit formed by the transistor Q2 in the on state. Therefore, even if the switches SW3 and SW4 are turned on, current does not flow through the circuit including the switches SW3 and SW4, but current flows through the circuit formed by the transistor Q2. Therefore, the voltage value V5 is supplied from the switch device 1. The switch submergence detection signal is continuously output.
On the other hand, even when the transistor Q2 is turned on, when the switches SW1 and SW2 are turned on, the switch device 1 outputs operation signals having voltage values V1 and V2. The circuit formed by the transistor Q2 in the on state is a circuit to which resistors R1 and R2 are added as compared with a circuit formed when the switches SW1 and SW2 are turned on. Therefore, when the switches SW1 and SW2 are turned on, current flows directly to the circuit including the switches SW1 and SW2, and the operation signals having the voltage values V1 and V2 are output from the switch device 1.

  Next, the control circuit 21 of the control device 2 gives an instruction to output a permission signal from the submergence detection circuit 27 when the switch submergence detection signal having the voltage value V5 is input from the switch device 1 as described above. (Arrow A11). At this time, the submergence detection circuit 27 outputs a permission signal to the AND circuits 22 and 24 (arrows A12 and A13). In addition, once the signal having the voltage value V5 is input from the switch device 1, the control circuit 21 is configured as described above even if the operation signal having the voltage values V1 to V4 is input from the switch device 1 thereafter. The control according to the operation signal at the time (control during normal operation) is not performed.

  Next, when a permission signal is input from the submergence detection circuit 27, the AND circuit 22 is configured to receive a signal for raising the window from the control circuit 21 (basically, after the submergence, the control circuit 21 Does not output the signal), and does not output a signal for raising the window to the motor drive circuit 26. On the other hand, the comparison circuit 28 outputs the operation signal to the AND circuit 24 when detecting that the operation signal having the voltage value V <b> 1 or V <b> 2 is input by comparison using the reference voltage value. The AND circuit 24 outputs a signal for lowering the window when the permission signal is input from the submergence detection circuit 27 and the operation signal having the voltage value V1 or V2 is input from the comparison circuit 28. To 23. The OR circuit 23 lowers the window from the AND circuit 24 even if the signal for lowering the window from the control circuit 21 is not input (basically, the control circuit 21 does not output the signal after submersion). When a signal for operating is input, the signal is output to the motor drive circuit 26. As a result, the motor drive circuit 26 drives the drive motor 4 so as to lower the window.

  Next, FIG. 3 is a diagram showing a circuit state when the control device 2 of the power window device 101 according to the first embodiment of the present invention is submerged first. As shown in FIG. 3, the submergence detection circuit 27 of the control device 2 outputs a permission signal to the AND circuits 22 and 24 (arrows A <b> 21 and A <b> 22) when detecting intrusion of water into itself. Once the submergence detection circuit 27 detects the ingress of water in this way, the control circuit 21 does not operate at the normal time as described above even if an operation signal having voltage values V1 to V4 is input from the switch device 1 thereafter. Do not perform control according to the operation signal (control during normal operation).

  Thereafter, each circuit operates in the same manner as in FIG. That is, when the permission signal is input from the submergence detection circuit 27, the AND circuit 22 outputs the signal for raising the window to the motor even if the signal for raising the window is inputted from the control circuit 21. It is not output to the drive circuit 26. On the other hand, the comparison circuit 28 outputs the operation signal to the AND circuit 24 when detecting that the operation signal having the voltage value V <b> 1 or V <b> 2 is input by comparison using the reference voltage value. The AND circuit 24 outputs a signal for lowering the window when the permission signal is input from the submergence detection circuit 27 and the operation signal having the voltage value V1 or V2 is input from the comparison circuit 28. To 23. The OR circuit 23 outputs the signal to the motor drive circuit 26 when the signal for lowering the window is input from the AND circuit 24 in this way. As a result, the motor drive circuit 26 drives the drive motor 4 so as to lower the window.

  Next, with reference to FIG. 4, the voltage change in the normal time and the time of submergence in the power window apparatus 101 according to the first embodiment of the present invention will be described. FIG. 4 shows voltage value times when the switches SW1 to SW4 are switched on / off in the power window device 101 according to the first embodiment of the present invention during normal operation and when submerged (when the switch device 1 is submerged). A chart is shown.

  As shown in FIG. 4, in the normal state, all the switches SW1 to SW4 are turned off, the switch SW2 is turned on, the switch SW1 is turned on, the switch SW2 is turned on, all the switches SW1 to SW4 are turned off, and the switch SW4 is turned on. It is assumed that the switches SW1 to SW4 are operated in the order of turning on the SW3, turning on the switch SW4, and turning off all the switches SW1 to SW4. In this case, the voltage value of the operation signal output from the switch device 1 to the control device 2 via the signal line 3 changes in the order of V0, V2, V1, V2, V0, V4, V3, V4, V0. . The relationship between the voltage values V0 to V4 is “V1 <V2 <V3 <V4 <V0”.

  When the switch device 1 is submerged, all the switches SW1 to SW4 are turned off, the switch SW2 is turned on, the switch SW1 is turned on, the switch SW2 is turned on, all the switches SW1 to SW4 are turned off, the switch SW4 is turned on, and the switch SW3 It is assumed that the switches SW1 to SW4 are operated in the order of turning on the switch, turning on the switch SW4, turning off all the switches SW1 to SW4. In this case, the voltage value of the signal output from the switch device 1 to the control device 2 via the signal line 3 changes in the order of V5, V2, V1, V2, V5, V5, V5, V5, V5. The relationship between the voltage values V0 to V5 is “V1 <V2 <V5 <V3 <V4 <V0”.

  As described above, when the switch device 1 is submerged, the transistor Q2 is turned on, so that the switch submergence detection signal having the voltage value V5 instead of the voltage value V0 is generated even when all the switches SW1 to SW4 are off. Output from the switch device 1. In the state where the transistor Q2 is turned on in this way, even if the switches SW3 and SW4 are turned on, the operation signal having the voltage values V3 and V4 is not output from the switch device 1, and the switch device 1 has the voltage value V5. The switch submergence detection signal continues to be output. On the other hand, even when the transistor Q2 is turned on, when the switches SW1 and SW2 are turned on, the switch device 1 outputs operation signals having voltage values V1 and V2.

  According to the first embodiment described above, in the power window device 101 in which the switch device 1 and the control device 2 are configured separately, the control device 2 sends a switch submergence detection signal from the submergence detection circuit 11 of the switch device 1. When the control signal is input, a permission signal is generated so as not to perform normal control, and the operation having the voltage values V1 and V2 for lowering the window from the switch device 1 in the state where the permission signal is generated. When the signal is input, the drive motor 4 is driven so as to lower the window glass. Thus, even if no special waterproof measures are taken for the control device 2, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window when submerged.

  In particular, according to the first embodiment, the forcible drive circuit is configured in the control device 2 by the OR circuit 23, the AND circuit 24, and the comparison circuit 28, so that the control circuit 21 in the control device 2 is interposed during submergence. Instead, the drive motor 4 can be directly driven so as to lower the window glass by the forced drive circuit. Therefore, even if the control circuit 21 breaks down during submergence, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window.

  Further, according to the first embodiment, the voltage values V1 to V4 of the operation signal output when the switches SW1 to SW4 are operated, and the switch that is output when the submergence detection circuit 11 detects the ingress of water. Since the switch device 1 is configured in a circuit so that the voltage value V5 of the submergence detection signal is different, the submergence of the switch device 1 can be appropriately determined on the control device 2 side. In addition, according to the first embodiment, the comparison circuit 28 in the control device 2 detects that the operation signal having the voltage values V1 and V2 is input to the control device 2, so that even after being submerged (for example, Even when the control circuit 21 breaks down due to submergence), it is possible to appropriately determine on the control device 2 side that the switches SW1 and SW2 have been operated to lower the window.

  Further, according to the first embodiment, after the submergence detection circuit 11 in the switch device 1 detects the ingress of water, when the switches SW1 and SW2 for lowering the window are operated, the switch device 1 is While the operation signals having the voltage values V1 and V2 are output, when the switches SW3 and SW4 for raising the window are operated, the switch device 1 does not output the operation signals having the voltage values V3 and V4. Since the switch device 1 is configured so as to continuously output the switch submergence detection signal having the voltage value V5, when the switch device 1 is submerged, the window lowering operation is ensured while the window lowering operation is ensured. It can be surely prevented.

  In addition, according to the first embodiment, since the submergence detection circuit 27 is provided not only in the switch device 1 but also in the control device 2, each of the switch device 1 and the control device 2 is submerged first. It is possible to detect submergence appropriately. Therefore, even if either the switch device 1 or the control device 2 is submerged first, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window.

Second Embodiment
Next, a power window device according to a second embodiment of the present invention will be described. Hereinafter, the configuration and control different from those in the first embodiment will be mainly described, and description of the same configuration and control as in the first embodiment will be omitted as appropriate. That is, the configuration and control not specifically described here are the same as those in the second embodiment. The same applies to the effects.

  First, with reference to FIG. 5, the structure of the power window apparatus by 2nd Embodiment of this invention is demonstrated. FIG. 5 is a circuit diagram schematically illustrating a power window device according to a second embodiment of the present invention.

  As shown in FIG. 5, the power window device 102 according to the second embodiment is configured separately from the switch device 31 including a plurality of switches SW5 to SW8, and the switch device 31 and two signals. A control device 32 connected by lines 33 and 34, and a drive motor 35 controlled by the control device 32 to lower and raise a vehicle window (not shown).

  The switch device 31 includes a switch SW5 for automatically lowering the window, a switch SW6 for manually lowering the window, a switch SW7 for automatically lifting the window, and a manually lifting window. A switch SW8. The switches SW5 and SW6 correspond to an example of a down switch in the present invention, and the switches SW7 and SW8 correspond to an example of an up switch in the present invention.

  The switch SW5 has one end connected to the signal line 33 and the other end connected to the ground via the ground line GL2. The switch SW6 has one end connected to the signal line 33 via the resistor R22 and the other end connected to the ground via the ground line GL2. The switch SW7 has one end connected to the signal line 33 via the resistors R22, R23, and R24, and the other end connected to the ground via the ground line GL2. A signal line 34 is further connected between the resistors R22 and R23. The switch SW8 has one end connected to the signal line 33 via the resistors R22, R23, R24, and R25, and the other end connected to the ground via the ground line GL2.

  Thus, by providing the resistors R22 to R25 between the switches SW5 to SW8 provided in parallel, the resistance value of the circuit formed when each of the switches SW5 to SW8 is turned on is changed. Specifically, a circuit not including R22 to R25 is formed when the switch SW5 is turned on, a circuit including a resistor R22 is formed when the switch SW6 is turned on, and resistors R22 to R24 are formed when the switch SW7 is turned on. A circuit including resistors R22 to R25 is formed when the switch SW8 is turned on. Thereby, when each of the switches SW5 to SW8 is turned on, the potential of the signal line 33, that is, the voltage value of the operation signal output to the control device 32 via the signal line 33 is changed. Here, when the voltage values V1 to V4 described above are also applied to the voltage values of the operation signal output to the control device 32 when each of the switches SW5 to SW8 is turned on, the voltage values V1 to V4 are set. The relationship is also “V1 <V2 <V3 <V4”. The switches SW5 to SW8 and the resistors R22 to R25 correspond to an example of a switch input circuit in the present invention.

  Further, the switch device 31 has a submergence detection circuit 36 (corresponding to a switch submergence detection circuit) configured to be able to detect water intrusion into the switch device 31 itself. The submergence detection circuit 36 has the same configuration as that of the submergence detection circuit 11 described above, and can detect intrusion of water into itself (corresponding to submergence of the switch device 31). The submergence detection circuit 36 has one end connected to the ground via the ground line GL2, and the other end connected to the base of the transistor Q21 via the resistor R27 (the resistor R27 further includes a resistor R28 and a capacitor C1). It is connected). The emitter of the transistor Q21 is connected to the signal line 33, and the collector of the transistor Q21 is connected to the base of the transistor Q22. The collector of the transistor Q22 is connected between the resistors R23 and R24, and the emitter of the transistor Q22 is connected to the ground via the ground line GL2.

  With such a circuit configuration, when the submergence detection circuit 36 detects the ingress of water, that is, when the two pads are brought into conduction by the water that has entered the submergence detection circuit 36, the transistor Q21 is turned on, whereby the transistor Q22 is turned on. Is also turned on. As a result, the resistor R23 and the resistor R24 are connected to the ground. This corresponds to turning on a virtual switch (transistor Q22) between the switches SW6 and SW7 provided in parallel. Therefore, when V5 is applied to the voltage value of a signal (switch submergence detection signal) output from the switch device 31 to the control device 32 via the signal line 33 when the transistor Q22 is turned on, this voltage is applied. The relationship between the value V5 and the voltage values V1 to V4 is also “V1 <V2 <V5 <V3 <V4”. This is because when the transistor Q22 is turned on, a circuit including resistors R22 and R23 is formed.

  Next, the control device 32 receives an operation signal from the switch device 31 via the signal line 33, and based on the voltage value of the operation signal, a control circuit 37 that performs control to move the window glass downward and upward, and this control circuit 37 A motor drive circuit 38 that drives the drive motor 35 under the control of the control circuit 37, and a submergence detection circuit 39 (corresponding to a control device submergence detection circuit) configured to be able to detect intrusion of water into itself. The EMC countermeasure filter 40 for countermeasures against electromagnetic compatibility (EMC) in the control device 32, the current detection circuit 41 for detecting the current of the motor drive circuit 38, and the output voltage to the drive motor 35 are monitored. Voltage monitoring circuit 42. Basically, the control circuit 37 and the motor drive circuit 38 are connected by a plurality of wires provided with a resistor 32 (each connected to the ground via a resistor R33). Note that the control device 32 is connected to a predetermined power source (not shown) in the same manner as the control device 2 described above.

  In the normal state (which means that the switch device 31 or the control device 32 is not submerged. The same applies hereinafter), the voltage value of the operation signal input from the switch device 31 is V3 or V4. In other words, that is, when the switch SW7 or SW8 for raising the window is operated, a signal for raising the window or a permission signal for raising the window (up) via the wiring provided with the resistor R32. And a descending permission signal) and a PWM (Pulse Width Modulation) signal are output to the motor drive circuit 38. Thereby, in the motor drive circuit 38, the “H” signal is input to the ascending input terminal, the ascending and descending permission input terminal, and the PWM input terminal, and the “L” signal is input to the descending input terminal. . Then, the motor drive circuit 38 outputs an “H” signal from the output terminal for raising, and outputs an “L” signal from the output terminal for lowering. As a result, the drive motor 35 raises the window.

  Further, in the normal state, the control circuit 37 detects resistance when the voltage value of the operation signal input from the switch device 31 is V1 or V2, that is, when the switch SW5 or SW6 for lowering the window is operated. A signal for lowering the window, a permission signal (rising and lowering permission signal) for operating the window, and a PWM signal are output to the motor drive circuit 38 via the wiring provided with R32. As a result, in the motor drive circuit 38, the “H” signal is input to the descending input terminal, the descending and ascending permission input terminal, and the PWM input terminal, and the “L” signal is input to the ascending input terminal. . Then, the motor drive circuit 38 outputs an “H” signal from the descending output terminal and an “L” signal from the ascending output terminal. As a result, the drive motor 35 moves the window downward.

  On the other hand, the submergence detection circuit 39 has one end connected to the ground and the other end connected to the base of the transistor Q24 via the resistor R31. The submergence detection circuit 39 has the same configuration as the submergence detection circuit 11 described above, and can detect the intrusion of water into itself (corresponding to the submersion of the control device 32). The resistor R31 is further connected to both ends of the resistor R30 and the capacitor C2, and the resistor R30, the capacitor C2, and the emitter of the transistor Q24 are connected to the EMC countermeasure filter 40. In particular, the resistor R30, the capacitor C2, and the emitter of the transistor Q24 including the EMC countermeasure filter 40 are connected to the signal line 33 via the resistor R21. The submergence detection circuit 39 is connected to the emitter and collector of the transistor Q23 at both ends, and the base of the transistor Q23 is connected to the control circuit 37. Further, the collector of the transistor Q24 is connected to the motor drive circuit 38 via resistors R36, R37, R38 and diodes D1, D2, D3, D4 provided in parallel. In addition, the collector of the transistor Q24 is connected to the control circuit 37 via the resistor R34 (this resistor 34 is further connected to the ground via the resistor R35), and is connected to the base of the transistor Q25. . The collector of the transistor Q25 is connected to the rising input terminal of the motor drive circuit 38 via the resistor R39, and the emitter of the transistor Q25 is connected to the signal line 34.

  When the submergence detection circuit 39 detects intrusion of water, that is, when the two pads are brought into conduction by the water that has entered the submergence detection circuit 39, the transistor Q24 is turned on. Further, when the switch submergence detection signal having the voltage value V5 is input from the switch device 31, that is, when the submergence detection circuit 36 of the switch device 31 detects the entry of water, the control circuit 37 turns on the transistor Q23. As a result (the signal output from the control circuit 37 to the transistor Q23 at this time corresponds to an example of a permission signal in the present invention), the transistor Q24 is turned on. When the transistor Q24 is turned on in this way, the “H” signal is input to the lower input terminal of the motor drive circuit 38 via the resistor R36 and the diode D1, and the motor drive circuit 38 is increased via the resistor R37 and the diode D2. An “H” signal is input to the input terminal, and an “H” signal is input to the lowering and rising permission input terminals of the motor drive circuit 38 via the resistor R36 and the diode D3, and via the resistor R38 and the diode D4. An “H” signal is input to the PWM input terminal of the motor drive circuit 38. When the transistor Q24 is turned on, a signal is input to the control circuit 37 via the resistor R34. Once such a signal is input, the control circuit 37 responds to the normal operation signal as described above even if an operation signal having voltage values V1 to V4 is input from the switch device 31 thereafter. Do not perform control (control during normal operation). In addition, when the transistor Q24 is turned on, the transistor Q25 is also turned on.

When the switches SW5 and SW6 of the switch device 31 are turned on in the state where the transistor Q25 is turned on in this way, that is, when the switches SW5 and SW6 for lowering the window are operated, a signal having a relatively low voltage value. (Corresponding to an example of a predetermined signal in the present invention. Especially when the switch SW6 is operated, the voltage value of the signal becomes almost 0) is input to the transistor Q25 via the signal line 34. As a result, the “L” signal is input to the ascending input terminal of the motor drive circuit 38. In other words, the signal input to the ascending input terminal changes from the “H” signal to the “L” signal. . As a result, the motor drive circuit 38 outputs the “H” signal from the descending output terminal and the “L” signal from the ascending output terminal, so that the drive motor 35 descends the window. On the other hand, even when the switches SW7 and SW8 of the switch device 31 are turned on in the state where the transistor Q25 is turned on, that is, even when the switches SW7 and SW8 for raising the window are operated, the signal line 34 is connected. Thus, no change occurs in the voltage of the signal input to the transistor Q25. Therefore, the signal input to the rising input terminal of the motor drive circuit 38 remains the “H” signal. Therefore, since the output signals from the descending output terminal and the ascending output terminal remain “H” signals, the drive motor 35 does not operate the window.
The circuit including the transistors Q24 and Q25 and the resistors R36, R37, and R38 corresponds to an example of a forced drive circuit in the present invention.

  Next, with reference to FIGS. 6 and 7, the operation when the power window device 102 according to the second embodiment of the present invention is submerged will be described in detail.

  FIG. 6 is a diagram illustrating a circuit state when the switch device 31 of the power window device 102 according to the second embodiment of the present invention is submerged first. As shown in FIG. 6, when the submergence detection circuit 36 of the switch device 31 detects the ingress of water, that is, when the two pads are brought into conduction by the water that has entered the submergence detection circuit 36, the transistor Q 21 is turned on, Thereby, the transistor Q22 is also turned on. As a result, the resistor R23 and the resistor R24 are connected to the ground. Thus, when the transistor Q22 is turned on (assuming that the switches SW5 to SW8 are turned off), a switch submergence detection signal having a voltage value V5 different from the voltage values V1 to V4 of the operation signal is received from the switch device 31. The signal is output to the control device 32 via the signal line 33.

  Further, in the state in which the transistor Q22 is turned on as described above, even if the switches SW7 and SW8 are turned on, the operation signal having the voltage values V3 and V4 is not output from the switch device 31 and the voltage value from the switch device 31 is not output. The switch submergence detection signal having V5 continues to be output to the signal line 33. The circuit formed when the switches SW7 and SW8 are turned on is a circuit to which resistors R24 and R25 are added as compared with the circuit formed by the transistor Q22 in the on state. Therefore, even if the switches SW7 and SW8 are turned on, no current flows through the circuit including the switches SW7 and SW8, but current flows through the circuit formed by the transistor Q22. The switch submergence detection signal is continuously output. On the other hand, even when the transistor Q22 is turned on, when the switches SW5 and SW6 are turned on, operation signals having voltage values V1 and V2 are output from the switch device 31 to the signal line 33. The circuit formed by the transistor Q22 in the on state is a circuit including resistors R22 and R23 as compared to the circuit formed when the switches SW5 and SW6 are turned on. Therefore, when the switches SW5 and SW6 are turned on, the current flows through the circuit including the switches SW5 and SW6 as they are, and the operation signals having the voltage values V1 and V2 are output from the switch device 31.

  Next, the control circuit 37 of the control device 32 turns on the transistor Q23 (arrow A31) when the switch submergence detection signal having the voltage value V5 is input from the switch device 31 as described above (arrow A31). Q24 turns on. When the transistor Q24 is turned on in this way, the “H” signal is input to the lower input terminal of the motor drive circuit 38 via the resistor R36 and the diode D1, and the motor drive circuit 38 is increased via the resistor R37 and the diode D2. An “H” signal is input to the input terminal, and an “H” signal is input to the lowering and rising permission input terminals of the motor drive circuit 38 via the resistor R36 and the diode D3, and via the resistor R38 and the diode D4. An “H” signal is input to the PWM input terminal of the motor drive circuit 38. When the transistor Q24 is turned on, the transistor Q25 is also turned on. As described above, when the switch submergence detection signal having the voltage value V5 is input from the switch device 31 as described above, even if the operation signal having the voltage values V1 to V4 is input from the switch device 31 thereafter, The control according to the normal operation signal as described above (normal control) is not performed.

  When the switches SW5 and SW6 of the switch device 31 are turned on in the state where the transistor Q25 is turned on in this way, a signal having a relatively low voltage value (particularly, when the switch SW6 is operated, the voltage value of the signal is almost equal). 0) is input to the transistor Q25 via the signal line 34. As a result, the “L” signal is input to the ascending input terminal of the motor drive circuit 38. In other words, the signal input to the ascending input terminal changes from the “H” signal to the “L” signal. . As a result, the motor drive circuit 38 outputs the “H” signal from the descending output terminal and the “L” signal from the ascending output terminal, so that the drive motor 35 descends the window. On the other hand, even when the switches SW7 and SW8 of the switch device 31 are turned on in the state where the transistor Q25 is turned on, the voltage of the signal input to the transistor Q25 via the signal line 34 does not change. Therefore, the signal input to the rising input terminal of the motor drive circuit 38 remains the “H” signal. Therefore, since the output signals from the descending output terminal and the ascending output terminal remain “H” signals, the drive motor 35 does not operate the window.

  Next, FIG. 7 is a diagram showing a circuit state when the control device 32 of the power window device 102 according to the second embodiment of the present invention is first submerged. As shown in FIG. 7, when the submergence detection circuit 39 of the control device 32 detects the intrusion of water into the inside thereof, that is, when two pads are conducted by the water that has entered the submergence detection circuit 39, the transistor Q24 turns on. When the transistor Q24 is turned on in this way, the “H” signal is input to the lower input terminal of the motor drive circuit 38 via the resistor R36 and the diode D1, and the motor drive circuit 38 is increased via the resistor R37 and the diode D2. An “H” signal is input to the input terminal, and an “H” signal is input to the lowering and rising permission input terminals of the motor drive circuit 38 via the resistor R36 and the diode D3, and via the resistor R38 and the diode D4. An “H” signal is input to the PWM input terminal of the motor drive circuit 38. When the transistor Q24 is turned on, a signal is input to the control circuit 37 via the resistor R34 (arrow A41). Once such a signal is input, the control circuit 37 responds to the normal operation signal as described above even if an operation signal having voltage values V1 to V4 is input from the switch device 31 thereafter. Do not perform control (control during normal operation). In addition, when the transistor Q24 is turned on, the transistor Q25 is also turned on.

  Even when the transistor Q25 is turned on, each circuit operates in the same manner as in FIG. That is, when the switches SW5 and SW6 of the switch device 31 are turned on in the state in which the transistor Q25 is turned on, a signal having a relatively low voltage value (particularly, when the switch SW6 is operated, the voltage value of the signal is Is input to the transistor Q25 via the signal line 34, the signal input to the rising input terminal changes from the “H” signal to the “L” signal. As a result, the motor drive circuit 38 outputs the “H” signal from the descending output terminal and the “L” signal from the ascending output terminal, so that the drive motor 35 descends the window. On the other hand, since the voltage of the signal input to the transistor Q25 via the signal line 34 does not change even when the switches SW7 and SW8 of the switch device 31 are turned on in the state where the transistor Q25 is turned on, the motor drive The signal input to the rising input terminal of the circuit 38 remains the “H” signal. Therefore, since the output signals from the descending output terminal and the ascending output terminal remain “H” signals, the drive motor 35 does not operate the window.

  According to the second embodiment described above, in the power window device 102 in which the switch device 31 and the control device 32 are configured separately, the control device 32 receives a switch submergence detection signal from the submergence detection circuit 36 of the switch device 31. When a signal is input, a permission signal is generated so as not to perform normal control, and in a state where the permission signal is generated, when a predetermined signal is input from the switch device 31 via the signal line 34, The drive motor 35 is driven so as to lower the window glass. Thus, even if no special waterproof measures are taken for the control device 32, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window when submerged.

  In particular, according to the second embodiment, the forced drive circuit is configured in the control device 32 by the transistors Q24, Q25, etc., and this forced drive is performed without going through the control circuit 37 in the control device 32 when submerged. The drive motor 35 can be directly driven so as to lower the window glass by the circuit. Therefore, even if the control circuit 37 breaks down during submergence, the lowering operation of the window can be appropriately ensured while preventing the malfunction of the device and the raising operation of the window.

  Further, according to the second embodiment, the voltage values V1 to V4 of the operation signal output when the switches SW5 to SW8 are operated, and the switch output when the submergence detection circuit 36 detects the ingress of water. Since the switch device 31 is configured so that the voltage value V5 of the submergence detection signal is different, it is possible to appropriately determine whether the switch device 31 is submerged on the control device 32 side.

  Further, according to the second embodiment, after the submergence detection circuit 36 in the switch device 31 detects the ingress of water, when the switches SW5 and SW6 for lowering the window are operated, the switch device 31 is A switch is provided so that the switch device 31 does not output the predetermined signal via the signal line 34 when the switches SW7 and SW8 for raising the window are operated while the predetermined signal is output via the signal line 34. Since the device 31 has a circuit configuration, when the switch device 31 is submerged, it is possible to reliably prevent the window lifting operation while securing the window lowering operation.

  In addition, according to the second embodiment, since the submergence detection circuit 39 is provided not only in the switch device 31 but also in the control device 32, each of the switch device 31 and the control device 32 is submerged first. It is possible to detect submergence appropriately. Therefore, even if either the switch device 31 or the control device 32 is submerged first, it is possible to appropriately ensure the lowering operation of the window while preventing the malfunction of the device and the raising operation of the window.

<Modification>
In the embodiment described above, the submergence detection circuit is provided in both the switch device and the control device. However, in other examples, the submergence detection circuit is provided only in the switch device, and the control device does not have to be provided with the submergence detection circuit. Good. Also by this, it is possible to appropriately ensure the lowering operation of the window while preventing malfunction of the device and the raising operation of the window during submergence.

SW1 to SW8 Switch 1, 31 Switch device 2, 32 Control device 3, 33, 34 Signal line 4, 35 Drive motor 11, 27, 36, 39 Submergence detection circuit 21, 37 Control circuit 26, 38 Motor drive circuit 28 Comparison circuit 101, 102 power window device

Claims (8)

A power window device for lowering and raising a window glass of a vehicle,
A lowering switch for lowering the window glass and an uppering switch for raising the window glass, and voltage values different between when the lowering switch is operated and when the uppering switch is operated. A switch device for outputting an operation signal having;
A control device configured separately from the switch device and connected to the switch device by a single signal line, the control device being configured to transmit the operation signal input from the switch device via the signal line. The control device that controls a drive motor for lowering and raising the window glass based on a voltage value, and
The switch device further includes:
The operation signal having a first voltage value is output when the lowering switch is operated, and the operation signal has a second voltage value different from the first voltage value when the rising switch is operated. A switch input circuit that outputs
A switch submergence detection circuit that outputs a switch submergence detection signal having a third voltage value different from the first and second voltage values when the intrusion of water into the device itself is detected;
The control device further includes:
When the operation signal is input from the switch input circuit of the switch device, the normal time control for driving the drive motor to move the window glass downward or upward according to the voltage value of the operation signal. And after the switch submergence detection signal is once input from the switch submergence detection circuit of the switch device, a control circuit that outputs a predetermined permission signal without performing the normal control, and
When the permission signal is input from the control circuit and the operation signal having the first voltage value is input from the switch input circuit of the switch device, the driving is performed so as to lower the window glass. A forced drive circuit for driving the motor,
A power window device characterized by that. The switch input circuit of the switch device is configured to form a first circuit having a first resistance value and to output the operation signal having the first voltage value when the lowering switch is operated. And when the raising switch is operated, a second circuit having a second resistance value different from the first resistance value is formed, and the operation signal having the second voltage value is output. And
The switch submergence detection circuit of the switch device forms a third circuit having a third resistance value different from the first and second resistance values when water intrudes into the switch device, and the third voltage Configured to output the switch submergence detection signal having a value;
Due to the configuration of the switch input circuit and the switch submergence detection circuit of the switch device, the third voltage value is larger than the first voltage value and smaller than the second voltage value.
The power window device according to claim 1. The switch input circuit of the switch device forms the first circuit when the descent switch is operated after water has entered the switch submergence detection circuit and the third circuit is formed. While outputting the first voltage value, the third voltage value is output without forming the second circuit even when the rising switch is operated.
The power window device according to claim 2. The forced drive circuit of the control device is:
A comparison circuit that detects the operation signal having the first voltage value by comparing a voltage value of the operation signal input from the switch device with a reference voltage value;
When the permission signal is input and the comparison circuit detects the operation signal having the first voltage value, the drive motor is driven to lower the window glass;
The power window apparatus as described in any one of Claims 1 thru | or 3. The control device further includes a control device submergence detection circuit that detects intrusion of water into the device itself,
The control circuit of the control device outputs the permission signal to the forcible drive circuit even when the control device submergence detection circuit detects water intrusion.
The power window apparatus as described in any one of Claims 1 thru | or 4. A power window device for lowering and raising a window glass of a vehicle,
A lowering switch for lowering the window glass and an uppering switch for raising the window glass, and voltage values different between when the lowering switch is operated and when the uppering switch is operated. A switch device for outputting an operation signal having;
A control device configured separately from the switch device and connected to the switch device by a first signal line and a second signal line, the control device being connected to the switch device via the first signal line. The control device that controls the drive motor for lowering and raising the window glass based on a voltage value of the operation signal when the operation signal is input, and
The switch device further includes:
The operation signal having a first voltage value is output to the first signal line when the lowering switch is operated, and the second voltage is different from the first voltage value when the rising switch is operated. A switch input circuit for outputting the operation signal having a value to the first signal line;
A switch submergence detection circuit that outputs a switch submergence detection signal having a third voltage value different from the first and second voltage values to the first signal line when the intrusion of water into the device itself is detected. ,
The switch input circuit of the switch device further outputs a predetermined signal to the second signal line when the lowering switch is operated after the switch submergence detection circuit detects water intrusion,
The control device further includes:
When the operation signal is input from the switch input circuit of the switch device, the normal time control for driving the drive motor to move the window glass downward or upward according to the voltage value of the operation signal. And after the switch submergence detection signal is once input from the switch submergence detection circuit of the switch device, a control circuit that outputs a predetermined permission signal without performing the normal control, and
When the permission signal is input from the control circuit and the predetermined signal is input from the switch input circuit of the switch device via the second signal line, the window glass is moved downward. The forced drive circuit for driving the drive motor,
A power window device characterized by that. The switch input circuit of the switch device is configured to form a first circuit having a first resistance value and to output the operation signal having the first voltage value when the lowering switch is operated. And when the raising switch is operated, a second circuit having a second resistance value different from the first resistance value is formed, and the operation signal having the second voltage value is output. And
The switch submergence detection circuit of the switch device forms a third circuit having a third resistance value different from the first and second resistance values when water intrudes into the switch device, and the third voltage Configured to output the switch submergence detection signal having a value;
Due to the configuration of the switch input circuit and the switch submergence detection circuit of the switch device, the third voltage value is larger than the first voltage value and smaller than the second voltage value.
The power window device according to claim 6. The switch input circuit of the switch device outputs the predetermined signal to the second signal line when the lowering switch is operated after the switch submergence detection circuit detects intrusion of water, while Even if a switch is operated, the predetermined signal is not output to the second signal line.
The power window device according to claim 7.

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