JPH11280335A - Water-resistant power window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-resistant power window which detects water penetrating into a water-resistant power window device and immediately changes a state to a motion for a flooding condition when it detects water. SOLUTION: In this water-resistant power window provided with a first series circuit comprising a first switch 1 and a first relay 2, a second series circuit comprising a second switch 3 and a second relay 4, a control IC 12, and a wiring substrate, a motor 11 is driven to one way to close the window by impressing the first relay 2 when the contact of the first switch 1 is changed over, and the motor 11 is driven to the other way to open the window by impressing the second relay 4 when the contact of the second switch 3 is changed over. The power window is also provided with a submergence-detecting element comprising a semiconductor detection element 14 connected in between an onboard electric source 13 and a detection terminal 8 of the control IC 12 and a submergence-detection conductor connected in between the control end of the semiconductor detection element 14 and the earthing terminal through resistances 19 in series. When the submergence detection element detects submerging condition, the semiconductor detection element 14 is put on and an electric source voltage is output from the first terminal 1 and the second terminal 2 of the control IC 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-resistant power window device, and more particularly, to a method of operating a window lowering switch to reliably open a door window when an automobile falls into water for some reason. The present invention relates to a water-resistant power window device that can be used.

[0002]

2. Description of the Related Art In general, a power window device used in an automobile is flooded with a window up switch or a window down switch when the vehicle falls into the water, and the respective contacts of the switches are electrically insulated by flooding. Is difficult to maintain, and although the contacts of the window up switch and the window down switch are open, the contacts become electrically conductive through a relatively small resistance value. Even if the lowering switch is operated, the window lowering operation, that is, the window opening operation cannot be performed.

FIG. 5 is a circuit diagram showing an example of a circuit configuration of a main part of such a known power window device.

As shown in FIG. 5, the power window device includes a window raising switch 51, a window raising relay 52 and its contact 52C, and a window lowering switch 5.
3, the window lowering relay 54 and its contact 54C,
An automatic window raising switch 55, an automatic window lowering switch 56, a window opening / closing motor 57, a control integrated circuit (hereinafter, referred to as a control IC) 58, and a vehicle power supply 5
It consists of nine.

[0005] A window raising switch 51 and a window raising relay 52 are connected in series between a vehicle-mounted power supply 59 and a ground point, and a window lowering switch 53 and a window lowering relay 54 are connected in series. Wind up switch 51
The connection point A between the window lowering relay 52 and the window raising relay 52 is connected to the terminal of the control IC 58, and the connection point B between the window lowering switch 53 and the window lowering relay 54 is connected to the terminal of the control IC 58. Automatic window raising switch 55
Has one end connected to the connection point A and the other end connected to a terminal of the control IC 58, respectively.
One end is connected to the connection point B, and the other end is connected to a terminal of the control IC 58. Contact 52C of window rising relay 52
Has a movable contact at one end of the window opening / closing motor 57,
One fixed contact is connected to the vehicle-mounted power supply 59, and the other fixed contact is connected to the ground point. The contact 54C of the window lowering relay 54 is such that the movable contact is a window opening / closing motor 57.
, One fixed contact is connected to the vehicle-mounted power supply 59, and the other fixed contact is connected to the ground point. The terminal of the control IC 58 is connected to the vehicle power supply 59.

[0006] The power window device having the above-mentioned structure operates roughly as follows.

When the driver or the like operates the window lift switch 51,
When the switch is operated, the contact closes and the window rise relay 5
2 is driven by the vehicle-mounted power supply 59. At this time, the contact 52C of the window raising relay 52 is switched, and the window opening / closing motor 57 rotates in one direction, whereby the window moves in the upward direction (window closing direction). When the operation of the window raising switch 51 is stopped, the contact is opened, the driving of the window raising relay 52 is stopped, the rotation of the window opening / closing motor 57 is stopped, and the window is stopped from rising. On the other hand, window lowering switch 5
By operating the switch 3, the contact is closed, and the window lowering relay 54 is driven by the vehicle-mounted power supply 59. At this time, the contact 54C of the window lowering relay 54 is switched, and the window opening / closing motor 57 rotates in the other direction, whereby the window moves in the lowering direction (window opening direction). When the operation of the window lowering switch 53 is stopped,
The contact is opened, the drive of the window lowering relay 54 is stopped, the rotation of the window opening / closing motor 57 is also stopped, and the lowering of the window is also stopped.

When a driver or the like operates the automatic window raising switch 55, the contact is closed and
The window raising switch 51 is operated at the same time, and the contact is closed. By closing the contact of the window raising switch 51, the window raising relay 52 is connected to the vehicle-mounted power supply 5.
9 driven by the above-mentioned window raising switch 51.
Is operated in the same manner as when the
Rotates in one direction, whereby the window moves in the ascending direction (window closing direction). Further, by closing both the contact point of the window raising switch 51 and the contact point of the automatic window raising switch 55, the voltage of the connection point A is supplied to the terminal of the control IC 58 and the voltage of the connection point A, respectively. In-vehicle power supply 5 at terminal
9 is latched and output, and this voltage is supplied to the window rising relay 52. For this reason, the operation of the automatic window raising switch 55 is stopped, the contact is opened,
At the same time, the operation of the window raising switch 51 is stopped,
Even if the contact is opened, the output voltage of the terminal is latched, so that the window raising relay 52 continues to be driven, and the window opening / closing motor 57 continues to rotate in one direction, whereby the window moves upward. Keep moving. The movement of the window in the upward direction is continued until the window is fully closed.

Similarly, an automatic window lowering switch 5
When the switch 6 is operated, the contact is closed and the window lowering switch 53 is simultaneously operated to close the contact.
Also in this case, the window lowering switch 53
Is operated in the same manner as when the
Rotates in the other direction, whereby the window moves in the downward direction (window opening direction). When both the contacts of the window lowering switch 53 and the automatic window lowering switch 57 are closed, the voltage of the connection point B is supplied to the terminal of the control IC 58 and the terminal of the control IC 58, respectively. In-vehicle power supply 5 at terminal
9 is latched and output, and this voltage is supplied to the window lowering relay 54. For this reason, the operation of the automatic window lowering switch 56 is stopped, the contact is opened,
At the same time, the operation of the window lowering switch 53 is stopped,
Even if the contact is opened, the output voltage of the terminal is latched, so that the window lowering relay 54 continues to be driven, and the window opening / closing motor 57 subsequently rotates in the other direction, whereby the window moves in the lowering direction. Keep moving. The movement of the window in the downward direction is continued until the window is fully opened.

In the known power window device, when the vehicle falls into the water for some reason and is flooded in the window up switch 51 or the window down switch 53, a comparison is made between the contacts of the switches 51 and 53 by water. Resistances 51R and 53R having a small resistance value are connected to each other, and although the respective contacts of the window up switch 51 and the window down switch 53 are open, these are connected to the window up relay 52 and the window down relay 54. The output voltage of the on-vehicle power supply 59 is applied through the leakage resistors 51R and 53R, and the window raising relay 52 and the window lowering relay 54 are simultaneously driven, or the window raising relay 52 and the window lowering relay 54 are simultaneously driven half. As a result, their contacts 52C, 54C are switched simultaneously. Or a state, or, their contacts 52C, a state in which 54C is not switched to any of the fixed contacts. As a result, the motor 57 is not driven to rotate. At this time, even if the driver of the automobile or the like operates the window lowering switch 53 to open the window, the window opening / closing motor 57 is not driven to rotate, and the window cannot be opened. As described above, the known power window device has a problem that when the vehicle falls into the water and is flooded, it is no longer possible to perform a normal window operation.

In order to solve such a problem, the applicant of the present invention has proposed a first switch having a one-circuit, two-contact first switch and a first relay, one end of which is selectively connected to a vehicle-mounted power supply or a ground point. A series circuit, a second series circuit including a second switch and a second relay, one end of which is selectively connected to a vehicle-mounted power supply or a ground point; and a control integrated circuit. The other end of the first series circuit is a second switch. The other end of the second series circuit is connected to the connection point of the first switch and the first relay, and the first relay is energized by contact switching of the first switch to turn the motor on and off. A water-resistant power window device that drives the motor to rotate in the other direction by rotating the motor in the other direction by driving the motor to rotate in the other direction by rotating the motor in the other direction by switching the contact point of the second switch while raising the window. And special And it filed as No. Rights 9-335728.

FIG. 6 is a circuit diagram showing the configuration of the water-resistant power window device proposed above.

As shown in FIG. 6, a water-resistant power window device has a window raising switch 61 having one contact and two contacts.
, A window raising relay 62 and its contact 62C,
A circuit 2 contact window down switch 63, a window down relay 64 and its contact 64C, an automatic window up switch 65, an automatic window down switch 66, a first backflow prevention diode 67, a second backflow prevention diode 68, It comprises a third backflow prevention diode 69, a fourth backflow prevention diode 70, a window opening / closing motor 71, a control integrated circuit (hereinafter, referred to as a control IC) 72, and a vehicle-mounted power supply 73.

The movable contact of the window up switch 61, the third backflow prevention diode 69, the first backflow prevention diode 67, and the window up relay 62 are connected in series to form a first series circuit. The movable contact of the window down switch 63, the fourth backflow prevention diode 70, the second backflow prevention diode 68 and the window down relay 64 are connected in series to form a second series circuit. Window lift switch 6
1, a normally closed contact is grounded and a normally open contact is
3 is connected. The other end of the window raising relay 62 is connected to a movable contact of the window lowering switch 63 and a connection point B1 between the fourth backflow prevention diode 70. The window lowering switch 63 has a normally open contact grounded and a normally open contact connected to the vehicle power supply 73. The window lowering relay 64
The other end is connected to the movable contact of the window lowering switch 61 and the connection point A1 of the third backflow prevention diode 69. A connection point A2 between the third backflow prevention diode 69 and the first backflow prevention diode 67 is connected to a terminal and a terminal of the control IC 72, and a connection point B2 between the fourth backflow prevention diode 70 and the second backflow prevention diode 68 is a terminal of the control IC 72. And terminals.

The water-resistant power window device having the above-described structure operates as follows.

The driver or the like operates the window lift switch 61
Is operated, the movable contact is switched from the normally closed contact side to the normally open contact side, and the voltage of the on-vehicle power supply 73 is changed to the switched window rising switch 61 and the third backflow prevention diode 6.
9. The first backflow prevention diode 67, the window raising relay 62, and the movable contact reach the ground point via the window lowering switch 63 which is switched to the normally closed contact side shown, and the window raising relay 62 is driven. At this time, the contact 62C of the window raising relay 62 switches the movable contact from the connection state shown to the reverse connection state, and the window opening motor 7
1 is supplied with the voltage of the vehicle-mounted power supply 73, and the window opening / closing motor 71 rotates in one direction to raise the window and close the window. When the operation of the window raising switch 61 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, and the voltage of the vehicle-mounted power supply 73 is reduced.
And the drive of the window raising relay 62 stops, so that the rotation of the window opening / closing motor 71 stops, the window raising stops, and the window is held at that position.

On the other hand, when the driver or the like operates the window lowering switch 63, the movable contact is switched from the illustrated normally closed contact side to the normally open contact side, and the voltage of the vehicle-mounted power supply 73 is changed. (4) The backflow prevention diode 70, the second backflow prevention diode 68, the window lowering relay 64, and the movable contact reach the ground point via the window raising switch 61 which is switched to the normally closed contact side shown, and the window lowering relay 64 is driven. Is done. At this time, the movable contact of the contact 64C of the window lowering relay 64 is switched from the connection state shown to the reverse connection state, the voltage of the vehicle-mounted power supply 73 is supplied to the window opening motor 71, and the window opening motor 71 rotates in the other direction. Then the window goes down,
Open the window. When the operation of the window lowering switch 63 is stopped, the movable contact is switched to the normally closed contact side shown in FIG.
And the drive of the window lowering relay 64 stops, so that the rotation of the window opening / closing motor 71 stops, the window lowering stops, and the window is held at that position.

When a driver or the like operates the automatic window raising switch 65, the window raising switch 61 is simultaneously operated in conjunction with the operation, so that the movable contact of the automatic window raising switch 65 is closed and the movable contact of the window raising switch 61 is changed. Switching from the illustrated normally closed contact side to the normally open contact side is performed. By switching the movable contact of the window raising switch 61, the voltage of the vehicle-mounted power supply 73 is increased.
The voltage is applied to the window rise relay 62 via the third backflow prevention diode 69 and the first backflow prevention diode 67, and the window rise relay 62 is driven in the same manner as when the window rise switch 61 is operated alone. Rotates in one direction to raise the window and close the window. At this time, when the movable contact of the automatic window raising switch 65 is closed, the voltage of the vehicle-mounted power supply 73 is applied to the terminal of the control IC 72, and the control IC 72
Outputs the voltage of the vehicle-mounted power supply 63 supplied to the terminal to the terminal and supplies it to the window rising relay 62. here,
When the operation of the automatic window raising switch 65 is stopped and the operation of the linked window raising switch 61 is also stopped, the movable contact of the window raising switch 61 is switched from the normally open contact side to the normally closed contact side, and is passed through the window raising switch 61. Although the supply of the voltage of the vehicle-mounted power supply 73 to the window raising relay 62 is stopped, the supply of the voltage of the vehicle-mounted power supply 73 output from the terminal of the control IC 72 is latched, and the voltage of the vehicle-mounted power supply 73 to the window raising relay 62 is reduced. As the supply continues, the window up relay 62 continues to be driven. Therefore, the window opening / closing motor 61 continues to rotate in one direction, and keeps raising the window. The rising of the window is continued until the window reaches the top of the moving range and the window is fully closed.

Similarly, when the driver or the like operates the automatic window lowering switch 66, the window lowering switch 63 is simultaneously operated in conjunction with the operation, and the movable contact of the automatic window lowering switch 66 is closed.
Is switched from the illustrated normally closed contact side to the normally opened contact side. When the movable contact of the window lowering switch 63 is switched to the normally open contact side, the voltage of the vehicle-mounted power supply 73 is applied to the window lowering relay 64 via the window lowering switch 63, the fourth backflow prevention diode 70, and the second backflow prevention diode 68. Then, similarly to the case where the window lowering switch 63 is operated alone, the window lowering relay 64 is driven, and the window opening / closing motor 71 rotates in the other direction, lowers the window, and opens the window. At this time, since the movable contact of the automatic window lowering switch 66 is closed, the voltage of the vehicle-mounted power supply 73 is applied to the terminal of the control IC 72 and the control IC 72
Outputs the voltage of the vehicle-mounted power supply 73 supplied to the terminal to the terminal and supplies the voltage to the window lowering relay 64. here,
When the operation of the automatic window lowering switch 64 is stopped and the operation of the interlocking window lowering switch 63 is also stopped, the movable contact of the window lowering switch 63 is switched from the normally open contact side to the normally closed contact side, and is passed through the window lowering switch 63. The supply of the voltage of the vehicle-mounted power supply 73 to the window lowering relay 64 is stopped, but the supply of the voltage of the vehicle-mounted power supply 73 output from the terminal of the control IC 72 is latched, and the voltage of the vehicle-mounted power supply 73 to the window lowering relay 64 is reduced. Supply is sustained,
The window lowering relay 64 continues to be driven. For this reason,
The window opening / closing motor 71 continues to rotate in the other direction and keeps moving down the window. The lowering of the window is continued until the window reaches the bottom of the moving range and the window is fully opened.

Further, if the vehicle falls into the water for some reason when the window is in a completely closed state or a state in which the window is almost completely closed, the water-resistant power window attached to the door is provided. The device is also flooded. In this water resistant power window device, although most of the components are waterproofed, the window lift switch 4
1. Since the window lowering switch 63, the automatic window raising switch 65, and the automatic window lowering switch 66 cannot perform a complete waterproofing process, water slightly enters when flooding. When water invades the window up switch 61 and the window down switch 63, as described above, a leak resistance due to water having a relatively small resistance is connected between the movable contact and the normally open contact. , But the window rise switch 6
Since the normally closed contacts of the 1 and the window down switch 63 are connected to the ground, the voltage of the vehicle-mounted power supply 53 applied to the window up switch 61 and the window down switch 63 is between the movable contact and the normally open contact. It flows to the ground point through the leakage resistance and the movable contact switched to the normally closed contact side,
It is not applied to the window up relay 62 and the window down relay 64. For this reason, the contact 62C of the window raising relay 62 and the contact 64C of the window lowering relay 64 are in the connection state shown in FIG.
Is not driven to rotate.

In this state, when the driver or the like operates the window lowering switch 63, the contact of the window lowering switch 63 is switched from the normally closed contact side to the normally open contact side, and the contact between the normally open contact and the movable contact is changed. The leakage resistance due to the water connected to the contact becomes short-circuited due to the switching of the contacts, and at the same time, the normally-closed contact and the movable contact become open from the short-circuited state, and this time, the normally-closed contact and the movable contact A leakage resistance due to water is connected between the two. For this reason, the voltage of the vehicle-mounted power supply 73 is set to
3, supplied to the window lowering relay 64 via the fourth backflow prevention diode 70 and the second backflow prevention diode 68;
The window lowering relay 64 is driven. Then, by driving the window lowering relay 44, the contact 44C is switched from the connection state shown to the reverse connection state, the voltage of the vehicle-mounted power supply 73 is applied to the window opening motor 71, and the window opening motor 71 is driven to rotate in the other direction. Is done. As a result, the window is lowered and the window is opened, so that a driver or the like can escape from the opened window.

[0022]

The water-resistant power window device proposed in the foregoing proposes the operation of the window lowering switch 63 even when the vehicle falls into water and the water-resistant power window device is completely flooded. By doing so, the window can be opened. However, since the progress of flooding into the window lowering switch 63 is relatively slow, the flooding of the entire water-resistant power window device is caused by the fact that the vehicle is underwater. After a certain time has passed since the fall.

In the process until the flooding reaches the whole, the wiring board and the components including the switches on the wiring board are partially immersed in water, so that the insulation resistance between the circuits is partially reduced. It becomes smaller and the circuit becomes unstable, and during that time, there is a small possibility that the operation corresponding to the submerged state becomes unstable.

The present invention solves each of these problems. One object of the present invention is to quickly detect inundation in a water-resistant power window device, and immediately switch to an operation at the time of inundation by the detection. It is an object of the present invention to provide a water-resistant power window device capable of performing the above-described steps.

Another object of the present invention is to provide a water-resistant power window device which does not weaken the function of detecting the immersion of the immersion detecting element at the time of immersion even when the voltage of the vehicle-mounted power supply is high. is there.

[0026]

In order to achieve the above and other objects, a water-resistant power window device according to the present invention comprises: a driving terminal of a first relay in a first series circuit; A driving terminal of a second relay in the second series circuit connected to one terminal, a second terminal of the control integrated circuit, and a semiconductor detection element connected between a vehicle-mounted power supply and a detection terminal of the control integrated circuit; A submergence detection element connected via a resistor between the control terminal of the detection element and ground is provided.When the water-resistant power window device is submerged, the semiconductor detection element is turned on by submergence detection by the submergence detection element immediately after the flooding starts. Means for outputting a power supply voltage from the first terminal and the second terminal of the control integrated circuit.

According to the above means, the vehicle falls into the water,
Immediately after the flooding of the water-resistant power window device starts, the water-immersion detection device performs the water-immersion detection, immediately turns on the semiconductor detection device, and immediately turns on the semiconductor detection device. A power supply voltage is output from the terminal and the second terminal to raise (close) the window and to lower (open) the first relay and window.
Since the power supply voltage is supplied to each relay,
It is possible to operate the first switch for raising the window or the second switch for lowering the window from an early point after the inundation without being affected by partial inundation to raise or lower the window, , Second
By operating the switch, the window is lowered, and it is possible to quickly escape from the opened window.

Further, according to the means, by connecting the resistor in series with the submergence detecting element, when the submergence detecting element detects submersion, the peak value of the current flowing through the submerged detecting element is suppressed by the series resistance. The submergence detecting element does not cause rapid electrolytic corrosion (corrosion) at the time of submergence, and the submergence detecting function of the submergence detecting element does not weaken.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, a water-resistant power window device has a first series circuit including a first switch and a first relay, one end of which is switchably connected to a vehicle-mounted power supply or a ground point. A second series circuit comprising a second switch and a second relay which are switched and connected to an in-vehicle power supply or a ground point; a control integrated circuit; and a wiring board on which one or more components are mounted. One end is connected to the connection point between the second switch and the second relay and the first terminal of the control integrated circuit, and the other end of the second series circuit is connected to the connection point between the first switch and the first relay and the other end of the control integrated circuit. When the first switch is switched, the motor is rotated in one direction by the bias of the first relay to raise the window. When the second switch is switched, the second relay is biased. Motor in the other direction A semiconductor detection element connected between a vehicle-mounted power supply and a detection terminal of a control integrated circuit, and a semiconductor detection element connected in series via a resistor between a control terminal of the semiconductor detection element and a ground. A submersion detecting element, wherein the semiconductor detecting element is turned on when the submersion detecting element detects submersion, and outputs a power supply voltage from the first terminal and the second terminal of the control integrated circuit.

In one embodiment of the present invention, in the water resistant power window device, two or more submergence detecting elements are arranged and connected in parallel.

According to these embodiments of the present invention, the semiconductor detecting element connected between the detecting terminals of the control integrated circuit of the vehicle-mounted power supply and the series-connected resistor between the control terminal of the semiconductor detecting element and the ground. A submergence detection element is provided. When the water-immersion power window device is submerged, the semiconductor detection element is turned on when submergence detection is performed by the submergence detection element, and a power supply voltage is output from the first terminal and the second terminal of the control integrated circuit. To supply the first relay for raising (closing) the window and the second relay for lowering (opening) the window, wherein the vehicle falls into the water and is flooded in the water-resistant power window device. When the submergence detection element detects inundation into the water-resistant power window device, that is, immediately performs submergence detection, turns on the semiconductor detection element immediately after detection, and controls the integrated circuit. The power supply voltage is output from the first terminal and the second terminal, and the power supply voltage is supplied to the first relay and the second relay, respectively. By operating the second switch for lowering the window, the window can be raised or lowered. In particular, by lowering the window by operating the second switch, the open window of the submerged vehicle can be opened. From the vehicle quickly.

Further, according to these embodiments of the present invention, by connecting a series resistor to the submergence detecting element, the submergence detecting element can be used at the time of submerging detection by the submerged detecting element regardless of the magnitude of the power supply voltage. The peak value of the flowing detection current is suppressed, so that the submergence detecting element does not undergo rapid electrolytic corrosion (corrosion) due to submergence, and the submersion detecting function of the submergence detecting element does not weaken.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a circuit diagram showing a main part of a first embodiment of a water-resistant power window device according to the present invention.

As shown in FIG. 1, the water-resistant power window device of the first embodiment has a window raising switch (first switch) 1 composed of one circuit and two contact switches, a window raising relay 2 and its contact 2C. A window lowering switch (second switch) 3 comprising a switch having two contacts in one circuit, a window lowering relay 4 and its contact 4C,
Automatic window raising switch 5, Automatic window lowering switch 6, First backflow prevention diode 7, Second backflow prevention diode 8, Third backflow prevention diode 9, Fourth backflow prevention diode 10, Window opening / closing motor 11
A control integrated circuit (hereinafter, referred to as a control IC) 12,
In-vehicle power supply (battery) 13, transistor (semiconductor detection element) 14, pair of parallel submergence detection conductive pins (submergence detection element) 15, resistors 16 and 17, and diode 18
And a series resistor 19.

The movable contact of the window up switch 1, the third backflow prevention diode 9, the first backflow prevention diode 7, and the window up relay 2 are connected in series to form a first series circuit. The movable contact of the window down switch 3, the fourth backflow prevention diode 10, the second backflow prevention diode 8, and the window down relay 4 are connected in series to form a second series circuit. In the window lift switch 1, one fixed contact (normally closed contact) is grounded, the other fixed contact (normally open contact) is connected to the vehicle power supply 13, and the movable contact is connected to the anode of the third backflow prevention diode 9. Is done. The window up relay 2 has one end connected to the cathode of the first backflow prevention diode 7 and the other end connected to a connection point B1 between the movable contact of the window down switch 3 and the anode of the fourth backflow prevention diode 10. A connection point A2 between the anode of the first backflow prevention diode 7 and the cathode of the third backflow prevention diode 9 is connected to a terminal and a terminal (first terminal) of the control IC 12. The window lowering switch 3 has one fixed contact (normally open contact) grounded and the other fixed contact (normally open contact) connected to the vehicle power supply 13. The window lowering relay 4 has one end connected to the cathode of the second backflow preventing diode 8 and the other end connected to a connection point A1 between the movable contact of the window raising switch 1 and the anode of the third backflow preventing diode 9. A connection point B2 between the anode of the second backflow prevention diode 8 and the cathode of the fourth backflow prevention diode 10 is a terminal and a terminal (second terminal) of the control IC 12.
Connected to.

The automatic window raising switch 5 has a movable contact connected to the vehicle power supply 13 and a fixed contact connected to the control IC.
12 terminals. The automatic window lowering switch 6 has a movable contact connected to the vehicle-mounted power supply 13 and a fixed contact connected to a terminal of the control IC 12. The contact 2C of the window rising relay 2 has a movable contact of a window opening / closing motor 1
One fixed contact is connected to the vehicle-mounted power supply 13, and the other fixed contact is grounded. The contact 4C of the window lowering relay 4 has a movable contact connected to the other end of the window opening / closing motor 11, one fixed contact connected to the vehicle power supply 13, and the other fixed contact grounded.
The in-vehicle power supply 13 has a positive electrode connected to a terminal and a terminal (power terminal) of the control IC 12 and a negative electrode connected to ground.

Further, the transistor 14 has an emitter connected to the terminal of the control IC 12, and a collector connected to the control IC 12.
Twelve terminals (detection terminals), and the base is connected to the parallel submergence detection conductive pin 15 via a series resistor 19 to a ground point. The resistor 16 is connected between the base and the emitter of the transistor 14, and the resistor 17 and the diode 18
It is connected in series between the detection terminal of C12 and ground.

FIGS. 2A and 2B are configuration diagrams showing an example of a configuration in a case where the water-resistant power window device of the first embodiment is mounted on a wiring board, and FIG. FIG. 3B is a bottom view of the wiring board, and FIG.

As shown in FIGS. 2 (a) and 2 (b), the water-resistant power window device includes a driver's seat window opening / closing switch, a passenger seat window opening / closing switch, and a rear right seat window opening / closing switch. A switch, a window opening / closing switch on the rear left seat side (both have no figure number), a window opening / closing lock switch (also without figure number), and a connector (also without figure number) are mounted. In addition, various components are mounted and arranged on the wiring board 20, and these various components are denoted by the same reference numerals for the same components as those shown in FIG.

On the upper surface of the wiring board 20, a control IC 12, a driver's seat window opening / closing switch, a passenger seat window opening / closing switch, a rear right seat window opening / closing switch, a rear left seat window opening / closing switch, and the like are mounted. On the lower surface side, a window raising relay 2, a window lowering relay 4, a transistor 14, a connector and the like are mounted and arranged, and a window opening / closing lock switch is mounted and arranged from the upper surface side to the lower surface side.

In this case, the parallel submergence detecting conductive pin 15 is
On the lower surface side of the wiring board 20, it is provided upright so as to protrude substantially perpendicularly to the surface of the wiring board 20. The length of the parallel immersion detection conductive pin 15 is preferably selected so as to be as long as possible in order to extend the detection range of immersion and to be at least longer than the length of the lead of the other component.

FIG. 3 is a characteristic diagram showing an example of a detection current flowing through the parallel submergence detecting conductive pin 15 at the time of detecting submersion in the water resistant power window device of the first embodiment.

In FIG. 3, the vertical axis represents the detected current and the horizontal axis represents time. The curve a shown by a solid line is the characteristic curve of the first embodiment, and the curve b shown by a dotted line is a series resistance not connected. It is a characteristic curve at the time.

The water-resistant power window device of the first embodiment having the above-mentioned structure operates roughly as follows.

First, the operation when the vehicle is normal (when the vehicle is not flooded) will be described.

When the driver or the like operates the window up switch 1, the movable contact switches from the illustrated normally closed contact side to the normally open contact side, and the voltage of the vehicle-mounted power supply 13 changes to the switched window up switch 1 and the third reverse flow. Prevention diode 9, first
The backflow prevention diode 7, the window raising relay 2, and the movable contact reach the ground point via the window lowering switch 3 which is switched to the normally closed contact side shown in the figure, and the window raising relay 2
Is driven. At this time, at the contact 2C of the window raising relay 2, the movable contact is switched from the connection state shown to the reverse connection state, the voltage of the vehicle-mounted power supply 13 is supplied to the window opening motor 11, and the window opening motor 11 is moved in one direction. Rotate. The rotation of the window opening / closing motor 11 in one direction raises the window and closes the window. Then, when the operation of the window raising switch 1 is stopped, the movable contact is switched to the normally closed contact side shown, and the supply of the voltage of the vehicle-mounted power supply 13 to the window raising relay 2 is prevented by the window raising switch 1, and the window raising is performed. Since the contact 2C of the relay 2 is in the connection state shown in the figure, the rotation of the window opening / closing motor 11 stops, the window stops rising, and the window is held at that position.

On the other hand, when a driver or the like operates the window lowering switch 3, the movable contact switches from the illustrated normally closed contact side to the normally open contact side, and the voltage of the vehicle-mounted power supply 13 is changed. 4 Backflow prevention diode 1
0, the second backflow prevention diode 8, the window lowering relay 4, and the movable contact reach the ground point via the window raising switch 1, which is switched to the normally closed contact side shown, and the window lowering relay 4 is driven. At this time, at the contact 4C of the window lowering relay 4, the movable contact switches from the connection state shown to the reverse connection state, and the window opening / closing motor 11
Is supplied with the voltage of the vehicle-mounted power supply 13, and the window opening / closing motor 11 rotates in the other direction. Window opening / closing motor 1
The rotation of 1 in the other direction lowers the window and opens the window. Then, when the operation of the window lowering switch 3 is stopped, the movable contact is switched to the normally closed contact side shown in the figure, and the supply of the voltage of the vehicle-mounted power supply 13 to the window lowering relay 4 is prevented by the window lowering switch 3. Since the contact 4C of the relay 4 is in the connection state shown in the figure, the rotation of the window opening / closing motor 11 is stopped, the lowering of the window is stopped, and the window is held at that position.

When the driver or the like operates the automatic window raising switch 5, the window raising switch 1 is simultaneously operated in conjunction with the operation, and the movable contact of the automatic window raising switch 5 is closed, and the movable contact of the window raising switch 1 is closed. Switches from the illustrated normally closed contact side to the normally opened contact side. When the movable contact of the window raising switch 1 is switched to the normally open contact side, the voltage of the vehicle-mounted power supply 13 is increased.
Third backflow prevention diode 9, first backflow prevention diode 7
Is applied to the window raising relay 2 to operate the window raising relay 2 in the same manner as when the window raising switch 1 is operated alone.
Is rotated in one direction, and the window is opened and closed by the rotation of the window opening / closing motor 11 in one direction. At this time, since the movable contact of the automatic window raising switch 5 is closed, the voltage of the vehicle power supply 13 is applied to the terminal of the control IC 12, and the control IC 12 outputs the voltage of the vehicle power supply 13 supplied to the terminal to the terminal. , To the wind-up relay 2. Here, when the operation of the automatic window raising switch 5 is stopped and the operation of the window raising switch 1 in conjunction therewith is also stopped, the movable contact of the window raising switch 1 is switched from the normally open contact side to the normally closed contact side, and the window is raised. Although the supply of the voltage of the vehicle-mounted power supply 13 to the window raising relay 2 through the switch 1 is stopped, the supply of the voltage of the vehicle-mounted power supply 13 output from the terminal of the control IC 12 is latched, and the vehicle-mounted power supply to the window raising relay 2 is latched. Since the supply of the voltage of the power supply 13 is continued, the window raising relay 2 continues to be driven. Therefore, the window opening / closing motor 11 continues to rotate in one direction and keeps raising the window. The rising of the window is continued until the window reaches the top of the moving range and the window is fully closed. In this case, the third backflow prevention diode 9 is a control IC
It is connected to apply all the voltage of the vehicle-mounted power supply 13 output from the terminal 12 to the window rising relay 2.

Similarly, when the driver or the like operates the automatic window lowering switch 6, the window lowering switch 3 is simultaneously operated in conjunction with the operation, and the movable contact of the automatic window lowering switch 6 is closed.
Is switched from the illustrated normally closed contact side to the normally opened contact side. When the movable contact of the window lowering switch 3 is switched to the normally open contact side, the voltage of the vehicle-mounted power supply 13 is applied to the window lowering relay 4 via the window lowering switch 3, the fourth backflow prevention diode 10, and the second backflow prevention diode 8. Then, as in the case where the window lowering switch 3 is operated alone, the window lowering relay 4 is driven, the window opening / closing motor 11 rotates in the other direction, and the window lowering motor 11 rotates in the other direction to lower the window. Let
Open the window. At this time, the movable contact of the automatic window lowering switch 6 is closed, the voltage of the vehicle power supply 13 is applied to the terminal of the control IC 12, and the control IC 12 outputs the voltage of the vehicle power supply 13 supplied to the terminal to the terminal. It is supplied to the descending relay 4. Here, when the operation of the automatic window lowering switch 6 is stopped and the operation of the window lowering switch 3 in conjunction therewith is also stopped, the movable contact of the window lowering switch 3 is switched from the normally open contact to the normally closed contact, and the window lowering is performed. Although the supply of the voltage of the vehicle power supply 13 to the window lowering relay 4 via the switch 3 is stopped, the supply of the voltage of the vehicle power supply 13 output from the terminal of the control IC 12 is latched, and the vehicle power supply to the window lowering relay 4 is latched. 13 voltage supply is continued and the window lowering relay 4
Continues to be driven. Therefore, the window opening motor 1
1 continues to rotate in the other direction and continues down the window.
The lowering of the window is continued until the window reaches the bottom of the moving range and the window is fully opened. In this case, the fourth backflow prevention diode 10 is connected to apply all the voltage of the vehicle-mounted power supply 13 output from the terminal of the control IC 12 to the window lowering relay 4.

Next, the operation when the vehicle is flooded (emergency) will be described.

Assuming that the vehicle falls into the water for some reason and is flooded in the vehicle, the water-resistant power window device of the first embodiment mounted inside the door is sequentially flooded. In this case, immediately after the flooding in the vehicle starts, if the water that has slightly penetrated into the bottom of the water-resistant power window device first comes into contact between the pair of exposed parallel immersion detecting conductive pins 15, The resistance between the parallel submergence detection conductive pins 15 is reduced, and the base circuit of the transistor 14 is connected to the series resistor 20 and the pair of parallel submergence detection conductive pins 15.
, The detection current flows through the base circuit, and the transistor 14 is turned on. And transistor 1
4 is turned on, the power supply voltage of the vehicle-mounted power supply 13 is applied to the detection terminal of the control IC 12 through the transistor 14, whereby the power supply voltage is output to the first terminal and the second terminal of the control IC 12, respectively. It is supplied to the window lowering relay 4. At this time, the window raising relay 2 and the window lowering relay 4 are both driven, and their contacts 2C, 4C are switched to the connection state opposite to the connection state shown in the figure, but the voltage of the vehicle-mounted power supply 13 is applied to the window opening / closing motor 11. Since the window opening / closing motor 11 does not rotate, the window does not open / close.

At this time, when the driver or the like operates the window lowering switch 3, the contact of the window lowering switch 3 is switched from the normally closed contact side to the normally open contact side, and the other end of the window raising relay 2 is connected to the vehicle power supply 13. Since the drive of the window rising relay 2 is stopped because the voltage of
The contact 2C is switched to the illustrated connection state. At this time, since the window lowering relay 4 is still in the driving state and the contact 4C has been switched to the connection state opposite to the connection state shown in the figure, the voltage of the vehicle-mounted power supply 13 is applied to the window opening / closing motor 11 and the window opening motor 11 is applied. The opening / closing motor 11 is driven to rotate in the other direction. The window is lowered and the window is opened by the rotational drive of the window opening / closing motor 11 in the other direction, so that the driver or the like can escape from the open window of the flooded automobile to the outside of the vehicle.

On the other hand, if the driver or the like operates the window up switch 1 instead of the window down switch 3, the window can be closed by the same function as the above-mentioned function.

In this case, in the water-resistant power window device of the first embodiment, the detection current flowing through the base circuit of the transistor 14 when the pair of parallel submergence detection conductive pins 15 detects submersion is represented by a characteristic curve A shown in FIG. As shown in FIG. 2, since the current at the time of detection does not become extremely large by connecting the series resistor 19, the pair of parallel submergence detection conductive pins 15 immersed in water is extremely A large detection current does not cause rapid electrolytic corrosion (corrosion), and maintains a stable detection current for a relatively long time.

By the way, when the series resistor 19 is not connected, as shown by the characteristic curve B in FIG. 3, a considerably large detection current flows immediately after the detection, as shown by the characteristic curve B in FIG. Therefore, the pair of parallel submerged detection conductive pins 15 immersed in water causes electrolytic corrosion (corrosion) due to a considerably large detection current flowing in water, and as a result, the detection current decreases in a relatively short time. .

The resistance value of the series resistor 19 is appropriately selected according to the characteristics of the transistor 14, the characteristics of the pair of parallel submergence detecting conductive pins 15, and the like so that the detection current is appropriately reduced.

After the pair of parallel submergence detecting conductive pins 15 detects inundation and drives the window up relay 2 and the window down relay 4, the flooding proceeds and the inside of the window up switch 1 and the window down switch 3 are moved. When water infiltrates, as described above, it becomes equivalent to the connection of a leakage resistance due to water having a relatively small resistance value between the movable contact and the normally open contact. Since the normally-closed contacts of both the down switches 3 are connected to the ground, the voltage of the vehicle-mounted power supply 13 applied to the window up switch 1 and the window down switch 3 causes a leak between the movable contact and the normally open contact. It flows to the ground point through the resistance and the movable contact switched to the normally closed contact side, and almost no voltage is applied to the window up relay 2 and the window down relay 4. . Therefore, there is no change in the connection state of the contact 2C of the window raising relay 2 and the contact 4C of the window lowering relay 4, and the window opening / closing motor 11 is not driven to rotate. When the driver or the like operates the window lowering switch 3 from this state, the same operation as that described above is performed.

If the pair of parallel submergence detecting conductive pins 15 are submerged in the water, the window raising switch 1
Alternatively, when the window lowering switch 3 is submerged in the water, countermeasures against flooding are executed by the same process as the technique previously proposed by the present applicant shown in FIG.

As described above, according to the water-resistant power window device of the first embodiment, the vehicle falls into the water, whereby the water-resistant power window device is immediately immersed in the water, that is,
Before the water enters the window lowering switch 3, the water slightly entering the bottom of the water-resistant power window device is applied to the pair of parallel submergence detection conductive pins 15, and the early detection of water intrusion by the parallel submergence detection conductive pins 15 is performed. When the window lowering switch 3 is operated immediately after or after the detection is performed, the window can be automatically opened. In addition, safety during flooding can be further improved.

Since the countermeasure against inundation is performed only by detecting inundation by the parallel immersion detection conductive pin 15, instability is eliminated.

The water-resistant power window device of the first embodiment has two sets of parallel submergence detecting conductive pins 15 erected at remote positions on the wiring board 19, and these are arranged in parallel in a circuit. Therefore, countermeasures against inundation are promoted when any of the pairs of parallel submergence detection conductive pins 15 detects inundation, and early countermeasures against inundation without being affected by the direction of inundation are possible. In this case, as the number of the parallel submergence detecting conductive pins 15 to be used is easily considered, the larger the better, the better, and it is better to select the standing direction to be in all directions.

Further, according to the water-resistant power window device of the first embodiment, when the pair of parallel submergence detection conductive pins 15 is submerged, the series resistor 19 is connected to detect the flow through the pair of parallel submergence detection conductive pins 15. Since the peak value of the current can be suppressed, a suddenly large electrolytic current (corrosion) does not occur due to a considerably large detection current flowing through the pair of submerged parallel submersion detection conductive pins 15, and detection of inundation of the parallel submergence detection conductive pins 15. Function can be maintained for a long time.

FIG. 4 is a circuit diagram showing a main part of a second embodiment of the water-resistant power window device according to the present invention.

In FIG. 4, the same components as those shown in FIG. 1 are denoted by the same reference numerals.

The configuration of the second embodiment differs from the configuration of the first embodiment in that the automatic window raising switch 5 and the automatic window lowering switch 6 used in the configuration of the first embodiment are omitted (the second embodiment). (1 difference) and the pair of parallel submergence detection conductive pins 15 used in the first embodiment uses a pair of straight parallel submergence detection conductive pins, whereas the tip is parallel to the surface of the wiring board 19. And only a pair of parallel water immersion detection conductive pins bent outward so as to face each other (a second difference), and the other configuration is the same as that of the first embodiment. is there. Therefore, further description of the configuration of the second embodiment will be omitted.

In the normal operation (non-flooding operation) in the operation of the second embodiment, the automatic window raising switch 5 and the automatic window lowering switch 6 are omitted when raising and lowering the window. , Automatic window up switch 5 and automatic window down switch 6
The operation is almost the same as the normal operation of the first embodiment, except that the automatic operation using the automatic operation cannot be performed. Therefore, further description of the normal operation of the second embodiment will be omitted.

Further, the operation of the second embodiment when the vehicle is flooded (emergency) is exactly the same as the operation of the first embodiment in the event of an emergency, and the description of this operation will be omitted.

Regarding the function and effect of the second embodiment, the tip of the pair of parallel submergence detecting conductive pins 15 is open outward, so that the pair of parallel submergence detection conductive pins 15 are used in the first embodiment. As compared with the parallel immersion detection conductive pin 15, the contact between the pair of parallel immersion detection conductive pins 15 suddenly decreases because the contact is made with a wider area at the moment of contact with the intruding water, that is, , The sensitivity of detection becomes more sensitive.

In each of the above embodiments, the semiconductor detecting element 14 in the submersion detecting element is a transistor, and the submersion detecting element is a pair of parallel submerging detecting conductive pins. However, the present invention is not limited to this. The semiconductor detecting element 14 may be replaced with an element that performs an operation similar to a transistor other than a transistor. A conductive plate may be used.

In each of the above embodiments, a pair of parallel submergence detecting conductive pins which are straight to the submergence detecting element of the first embodiment are connected to a pair of submerged detecting subelements of which the tip shape is opened outward. In the second embodiment, a pair of parallel immersion detection conductive pins each having a tip open outward is used for the immersion detection element of the first embodiment. A pair of straight submerged detection conductive pins may be used, and a pair of parallel submerged detection conductive pins may be used in both the first embodiment and the second embodiment. In both of the examples, a pair of parallel submergence detection conductive pins whose tip shapes are opened outward may be used.

[0072]

As described above, according to the present invention, when a vehicle falls into the water and water is generated in the water-resistant power window device, the parallel water submersion is detected soon after the water-resistant power window device starts to be flooded. Submergence detection by conductor is performed,
Immediately turn on the semiconductor detecting element, output the power supply voltage from the first terminal and the second terminal of the control integrated circuit, and increase the window (close) the first relay and lower the window (open) the second relay, respectively. Since the power supply voltage is supplied, unstable operation in the process of inundation can be prevented, and the first switch for raising the window or the second switch for lowering the window can be prevented from an early point after the inundation. By operating the switch, the window can be raised or lowered, and in particular, by operating the second switch, the window can be lowered to quickly escape from the opened window.

Further, according to the present invention, by connecting a resistor in series to the submersion detecting element, when the submersion detecting element detects submersion, the peak value of the current flowing through the submersion detecting element is suppressed by the series resistance. There is an effect that the submergence detecting element does not cause rapid electrolytic corrosion (corrosion) at the time of inundation, and the submergence detecting function of the submergence detecting element does not suddenly weaken.

[Brief description of the drawings]

FIG. 1 is a first view of a water-resistant power window device according to the present invention.
FIG. 2 is a circuit diagram illustrating a main configuration of the embodiment.

FIG. 2 is a configuration diagram showing an example of a configuration in a case where the water-resistant power window device of the first embodiment is mounted on a wiring board.

FIG. 3 is a characteristic diagram showing a change state of a detection current in the water-resistant power window device of the first embodiment.

FIG. 4 shows a second embodiment of the water-resistant power window device according to the present invention.
FIG. 2 is a circuit diagram illustrating a main configuration of the embodiment.

FIG. 5 is a circuit diagram showing an example of a circuit configuration of a main part of a known power window device.

FIG. 6 is a circuit diagram showing a configuration of a water-resistant power window device already proposed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window up switch (1st switch) 2 Window up relay 2C Window up relay contact 3 Window down switch (2nd switch) 4 Window down relay 4C Window down relay contact 5 Automatic window up switch 6 Automatic window down switch 7 No. 1 Backflow prevention diode 8 Second backflow prevention diode 9 Third backflow prevention diode 10 Fourth backflow prevention diode 11 Window opening / closing motor 12 Control IC (Control integrated circuit) 13 In-vehicle power supply (Battery) 14 Transistor (Semiconductor detection element) 15 Parallel immersion detection conductive pin (submersion detection element) 16, 17 Resistance 18 Diode 19 Series resistance 20 Wiring board

Claims (2)

[Claims] A first series circuit comprising a first switch and a first relay, one end of which is connected to a vehicle-mounted power supply or a ground point, a second switch and a second end of which one end is connected to the vehicle-mounted power supply or a ground point. A second series circuit consisting of a relay, a control integrated circuit, and a wiring board on which one or more components are mounted, and the other end of the first series circuit is connected to a connection point between the second switch and the second relay; The other end of the second series circuit is connected to the first terminal of the control integrated circuit.
A connection point between a switch and the first relay and a second terminal of the control integrated circuit. When a contact of the first switch is switched, the motor is rotated in one direction by the bias of the first relay, and the window is driven. A water-resistant power window device that lowers the window by rotating the motor in the other direction by urging the second relay at the time of contact switching of the second switch. A submersion detection element connected between the detection terminals of the control integrated circuit, and a submergence detection element connected via a series resistor between the control terminal of the semiconductor detection element and ground, and submergence detection by the submergence detection element A water-resistant power window device in which the semiconductor detecting element is sometimes turned on and a power supply voltage is output from the first terminal and the second terminal of the control integrated circuit. 2. The water-resistant power window device according to claim 1, wherein two or more submergence detecting elements are arranged and connected in parallel.