JP3760792B2 - Power window device with submergence sensor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power window device with a submergence sensor, and more particularly to a power window device with a submergence sensor excellent in submergence detection reliability.
[0002]
[Prior art]
Conventionally, when a vehicle submergence is detected, the power window device is forcibly prohibited from ascending the window, and when a window descent operation signal is input from the outside, the motor is driven for descent of the window. Technology for preventing window unopenability due to malfunction of window control unit (also called window control unit)
A submerged power window device is also proposed.
[0003]
An example of a conventional submersible power window device is shown in FIG. The printed circuit board (wiring board) 100 includes relays 101 and 102, relay driving transistors 103 and 104, a window control unit 105, a submergence control unit 106, a power circuit unit 107, resistance elements r1 to r6, and diodes D1 to D3. Has been implemented. 201 is an operation switch for raising the window, 202 is an operation switch for lowering the window, and M is a motor for raising and lowering the window.
[0004]
The window control unit 105 is applied with the power supply voltage Vcc from the power supply circuit unit 107. The submergence controller 106 outputs an output signal S1 that turns on the window descent relay 102 when the submergence is detected and the window descent operation switch 202 is turned on, and further outputs a submergence signal S2 to the window controller 105 when submergence is detected. The window control unit 105 prohibits turning on of the transistor 103 that supplies power to the coil of the window raising switching relay 101 in response to the input of the submergence signal S2.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional submergence-compatible power window device, the submergence controller controls the submergence detection signal to be transmitted to the window controller so that the window controller does not output the signal for raising the window. If these window control units malfunction due to flooding or the like, there is a problem that the window rise cannot be prevented well or that the window is lowered despite the fact that the window lowering operation switch is not operated.
[0006]
This can be caused by flooding that causes current leakage between the power line and a lower potential line, or current leakage between the ground line and a higher potential line. There are many.
[0007]
The present invention has been made in view of the above problems, and an object thereof is to provide a power window device having a submergence sensor that realizes the reliability of control operation during submergence while suppressing the complexity of the circuit configuration. Yes.
[0008]
[Means for Solving the Problems]
The power window device with a submergence sensor according to claim 1 is composed of a motor for raising and lowering the window, an operation switch for raising and lowering the window, and a pair of submergence detection electrodes arranged apart from each other, and the both submergence sensors. A submergence sensor that detects submergence due to a decrease in the electrical resistance between the detection electrodes, a window control unit that performs normal control for raising and lowering the window elevating motor based on an operation signal of the operation switch, and submergence detection by the submergence sensor A submersion control unit that preferentially executes submergence control that prohibits the window elevating motor from being raised and sometimes allows a descent operation, and a power supply circuit unit that supplies power to the window control unit,
The submergence control unit prohibits power supply from the power supply circuit unit to the window control unit when the submergence is detected.
[0009]
That is, in this configuration, if the submersion control unit detects submergence, the power supply voltage application to the window control unit in charge of window control during non-submergence is prohibited, so that the window control unit does not malfunction when submerged. Since the window raising / lowering motor can be driven and controlled only by the submergence control unit, the operation accuracy can be remarkably improved as compared with the conventional one without causing a complicated circuit configuration.
[0010]
A power window device having a submergence sensor according to claim 2 comprises a motor for raising and lowering the window, an operation switch for raising and lowering the window, and a pair of submergence detection electrodes arranged apart from each other. A submergence sensor that detects submergence by reducing the electrical resistance between the submergence detection electrodes, a window control unit that performs normal control for raising and lowering the window lifting motor based on an operation signal of the operation switch, and a submergence by the submergence sensor A submergence control unit that preferentially executes submergence control that prohibits raising of the window raising / lowering motor at the time of detection and enables a descent operation, a power supply circuit unit that supplies a power supply voltage to the window control unit, and the window control And a power switch that opens and closes power supply to the power supply circuit unit, and the submergence control unit shuts off the power switch when the submergence is detected.
[0011]
That is, in this configuration, when a submergence signal is input from the submergence sensor to the submergence control unit, the submergence control unit opens a power switch that supplies power to the window control unit and the power supply circuit unit. The submergence control unit is supplied with power by a path other than the power switch.
[0012]
In this way, the window control unit and the power supply circuit unit may adversely affect the operation of the window lifting motor due to current leakage between lines when submerged, resulting in undesirable window lifting operations and when necessary. It is possible to prevent a problem that the vehicle cannot be lowered.
[0013]
A power window device having a submergence sensor according to claim 3, a motor for raising and lowering the window, an operation switch for raising and lowering the window, an ascending drive unit for raising and driving the motor, and a driving for lowering the motor Based on a descent drive unit, a submergence sensor configured by a pair of submergence detection electrodes disposed apart from each other and detecting submergence due to a decrease in electrical resistance between the submergence detection electrodes, and an operation signal of the operation switch A window control unit that performs normal control to raise and lower the window raising and lowering motor by controlling the ascending drive unit and the lowering drive unit, and prohibits the window raising and lowering motor from being raised when submergence is detected by the submergence sensor, and A submergence control unit that preferentially executes submergence control that enables the motor to descend through the descent drive unit, and the ascending drive unit, the descent drive unit, the window control unit, and the submergence control unit are implemented. A wiring substrate, is characterized in that it comprises the vertical drive unit and the submerged control unit and at least the partition plate partitioning the window control section.
[0014]
That is, this structure is a structure in which the descent drive unit that operates in response to a window descent request during submergence and the submergence control unit are separated from at least the window control unit that operates when not submerged by a partition plate through the submergence control unit that operates during submergence. This prevents the possibility of malfunction of the window lifting motor due to undesired current leakage between the wiring of the window control unit and the wiring of the submersion control unit and the descent drive unit when submerged. be able to.
[0015]
According to a fourth aspect of the present invention, in the power window device having the submergence sensor according to the third aspect, the partition plate is fixed to the wiring board.
[0016]
According to this configuration, the partition plate can be easily provided by a circuit component mounting technique on a normal printed board.
[0017]
According to the configuration of claim 5, in the power window device having the submergence sensor according to claim 3, the partition plate further protrudes from the inner surface of a case housing the wiring substrate toward the wiring substrate, and the wiring It is characterized by being in contact with the substrate.
[0018]
According to this configuration, the partition plate can be integrally formed at the same time as the resin molding of the case, and the space for accommodating the submersion control unit and the descending drive unit is completely separated from at least the space for accommodating the window control unit. Therefore, current leakage between the window control unit and the submergence control unit or the descent drive unit during submergence can be completely prevented with a small cost burden.
[0019]
A power window device having a submergence sensor according to claim 6, a motor for raising and lowering the window, an operation switch for raising and lowering the window, an ascending drive unit for raising and driving the motor, and a driving for lowering the motor Based on a descent drive unit, a submergence sensor configured by a pair of submergence detection electrodes disposed apart from each other and detecting submergence due to a decrease in electrical resistance between the submergence detection electrodes, and an operation signal of the operation switch A window control unit that performs normal control to raise and lower the window raising and lowering motor by controlling the ascending drive unit and the lowering drive unit, and prohibits the window raising and lowering motor from being raised when submergence is detected by the submergence sensor, and A submergence control unit that preferentially executes submergence control that enables the motor to descend through the descent drive unit, and a first wiring on which the descent drive unit and the submergence control unit are mounted A plate, is characterized by comprising a second wiring board at least the window control unit are mounted.
[0020]
That is, in this configuration, the descent drive unit and the submergence control unit that operate according to the window descent request during submergence through the submergence control unit that operates at the time of submergence, and at least the window control unit that operates at the time of non-submergence are on different wiring boards. Because it is mounted, current leaks through creeping discharge on the wiring board when submerged, causing unwanted window lift motor operation, or the window lift motor not dropping when necessary. It can be prevented by the configuration.
[0021]
According to the configuration of claim 7, in the power window device having the submergence sensor according to claim 6, the both wiring boards are housed in the same case, and the case includes a partition plate that partitions the wiring boards. It is characterized by having.
[0022]
According to this configuration, the partition plate can be integrally formed at the same time as the resin molding of the case, and the space for accommodating the submersion control unit and the descending drive unit is completely separated from at least the space for accommodating the window control unit. Therefore, current leakage between the window control unit and the submergence control unit or the descent drive unit during submergence can be completely prevented with a small cost burden.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described based on the following examples.
[0024]
[Example 1]
A power window device with a submergence sensor of this embodiment will be described below with reference to the circuit diagram shown in FIG.
[0025]
(Circuit configuration)
The printed circuit board (wiring board) 100 includes relays 101 and 102, relay driving transistors 103 and 104, a window control unit 105, a submergence control unit 106, a power circuit unit 107, resistance elements r1 to r6, and diodes D1 to D3. Has been implemented.
[0026]
201 is an operation switch for raising the window, 202 is an operation switch for lowering the window, and M is a motor for raising and lowering the window.
[0027]
The window control unit 105 is configured by a microcomputer or a logic circuit, and the power supply voltage Vcc is applied from the power supply circuit unit 107. The submergence control unit 106 has the circuit configuration shown in FIG. 2 and outputs an output signal S1 for turning on the window descent relay 102 when the submergence is detected and when the window descent operation switch 202 is turned on. The power supply circuit unit stop signal S2 for prohibiting the power supply voltage output of the circuit unit 107 is output. The submergence control unit 106 will be described later.
[0028]
In this embodiment, the power supply circuit unit 107 applies the power supply voltage Vcc to the coil of the switching relay 101 for raising the window, but the battery voltage + B may be applied to the coil of the switching relay 101 for raising the window.
[0029]
(Explanation of operation when not submerged)
A battery voltage + B is applied to the output terminal of the operation switch 201 for raising the window through the resistance element r1, and the output terminal potential of the operation switch 201 that has become a low potential when the operation switch 201 is turned on is controlled by the window through the resistance element r2. Input to the unit 105.
[0030]
As a result, the window control unit 105 turns on the transistor 103 through the resistance element r5, and the transistor 103 energizes the coil of the switching relay 101 for raising the window, and the switching relay 101 falls to the B power supply terminal 1011 side to raise and lower the window. A current flows from the battery in one direction to the motor M, and the window raising / lowering motor M raises the power window. Reference numeral 1012 denotes a ground terminal.
[0031]
A battery voltage + B is applied to the output terminal of the window lowering operation switch 202 through the resistance element r3, and the output terminal potential of the operation switch 201, which has become a low potential when the operation switch 202 is turned on, is window-controlled through the resistance element r4. Input to the unit 105.
[0032]
As a result, the window control unit 105 turns on the transistor 104 through the resistance element r6, the transistor 104 energizes the coil of the switching relay 102 for lowering the window, and the switching relay 102 falls to the B power supply terminal 1021 side, A current flows from the battery in the reverse direction to the motor M, and the window lifting motor M lowers the power window. Reference numeral 1022 denotes a ground terminal.
[0033]
(Explanation of operation when submerged)
In FIG. 2, reference numeral 1061 denotes a submergence sensor, which is mounted on the printed circuit board 100 at a predetermined interval, and the electrical resistance value of the submergence sensor 1061 decreases due to submergence.
[0034]
As a result, the connection point potential between the submergence sensor 1061 and the resistance element r7 becomes high level, the transistors 1062 and 1063 are turned on, and the low level collector potential S2 of the transistor 1062 is output. The emitter of the transistor 1063 is grounded through the operation switch 202 for lowering the window. Therefore, when the submergence sensor 1061 has a low resistance and the operation switch 202 is turned on, the signal S1 is output. r8 and r9 are load resistance elements, and a battery voltage + B is applied thereto.
[0035]
In FIG. 1, the signal S <b> 2 is input to the power supply circuit unit 107. When the signal S2 becomes low level, the power supply circuit unit 107 outputs 0V instead of the constant power supply voltage Vcc that has been output so far. Various circuit configurations are known for the power supply circuit unit 107, but in this type of power supply circuit unit 107, it is easy to cut off the output voltage Vcc, and illustration of the circuit configuration is omitted.
The power supply circuit unit 107 may have a circuit configuration that outputs a divided voltage of the battery voltage + B and outputs 0 V in response to the input of the signal S2 instead of the constant voltage circuit.
[0036]
When the power supply circuit unit 107 outputs 0 V, even if a current leakage state is caused by water immersion, there is no high potential line in the circuit including the window control unit 105, the window raising switching relay 101, and the transistor 103. In addition, the window raising switching relay 101 is not switched to the raising side, and the window raising is prohibited.
[0037]
When the operation switch 202 for window lowering is turned on and the transistor 1063 is turned on due to water immersion, the transistor 1062 outputs a low level potential S2, a current flows through the coil of the window lowering switching relay 102, and the window lowering switching relay. Reference numeral 102 denotes a window raising / lowering motor M that lowers the power window.
[0038]
[Example 2]
A power window device with a submergence sensor according to another embodiment will be described below with reference to a circuit diagram shown in FIG.
[0039]
This circuit is obtained by adding a power switch 300 and a second power terminal + B ′ to the circuit of FIG. Similarly to the first power supply terminal + B, the second power supply terminal + B ′ is supplied with power from an in-vehicle battery (not shown), and supplies power to the power supply circuit unit 107 through the power switch 300.
[0040]
The power switch 300 receives a power supply circuit unit stop signal S <b> 2 that prohibits the power supply voltage output of the power supply circuit unit 107 when the submergence is detected from the submergence control unit 106, and prohibits power supply to the power supply circuit unit 107. Similar to the first embodiment, the submergence control unit 106 is supplied with power from the first power supply terminal + B even when submerged.
[0041]
According to this embodiment, the same effects as those of the first embodiment can be obtained.
[0042]
[Example 3]
A power window device with a submergence sensor according to another embodiment will be described below with reference to FIGS. 1, 4, and 5.
[0043]
Reference numeral 100 is a printed circuit board (wiring board), 101 is a relay for raising the window (in the present invention, an ascending drive unit), 102 is a relay for lowering the window (in the present invention, a lowering drive unit), and 103 is a transistor (in the present invention). 104 is a transistor (a descending drive unit in the present invention), 400 is a partition plate made of a resin plate, 500 is a resin case, 600 is a connector fixed to the printed circuit board 100, and 111 is a submergence control unit. 106, a mounting region of the printed circuit board 100 on which circuit components other than the window lowering relay (the lowering drive unit according to the present invention) 102 and the transistor (the lowering driving unit according to the present invention) 103 are mounted, 112 is a submergence control unit 106, a printed circuit board 100 on which a window lowering relay (downward drive unit in the present invention) 102 and a transistor (downward drive unit in the present invention) 103 are mounted. It is a region.
[0044]
The circuit configuration and operation are the same as in the first embodiment.
[0045]
As shown in FIG. 6, metal legs 601 and 602 are fixed to the partition plate 400. The legs 601 and 602 are inserted into through holes (not shown) of the printed circuit board 100 and soldered. ing. The partition plate 400 separates the two mounting areas. The top surface of the partition plate 400 reaches the inner surface of the case 500. The arrow shown in FIG. 4 is the direction in which the printed circuit board 100 is inserted into and removed from the case 500.
[0046]
According to this embodiment, the descent drive units 102 and 104 that operate in response to the window lowering request during submergence and the submergence control unit 106 through the submergence control unit 106 that operates during submergence, the window control unit 105 that operates during non-submergence, Since the power supply circuit unit 107 and the ascending drive unit 101, 103 are separated from each other by the partition plate 400, it is not desired between the wiring of the first mounting region 111 and the wiring of the second mounting region 112 when submerged. It is possible to prevent the possibility of malfunction of the window raising / lowering motor due to a serious current leak.
[0047]
The structure of this embodiment is not limited to the circuit of the first embodiment shown in FIG. 1, but the power supply to the power circuit section 107, the window control section 105, and the ascending drive sections 101 and 103 is maintained as usual even when submerged. It can also be applied to a circuit configuration.
[0048]
(Modification)
4 to 6, the partition plate 400 is fixed to the printed circuit board 100. Instead, the partition plate 400 may be integrally molded with the case 500. Moreover, you may produce the leg parts 601 and 602 integrally with the partition plate 400 by resin molding.
[0049]
[Example 4]
A power window device with a submergence sensor according to another embodiment will be described below with reference to FIGS. 1, 7, and 8.
[0050]
100 and 100 ′ are printed circuit boards (wiring boards), 600 is a connector fixed to the printed circuit board 100, 600 ′ is a connector fixed to the printed circuit board 100 ′, and 400 ′ is a partition molded integrally with the case 400. It is a plate (partition wall).
[0051]
A printed circuit board (first wiring board) 100 includes a window raising relay (a rising drive unit in the present invention) 101, a transistor (a rising drive unit in the present invention) 103, a window control unit 105, and a power supply circuit unit 107. Has been implemented.
[0052]
A printed board (second wiring board) 100 ′ is mounted with a relay for lowering a window (a descending drive unit according to the present invention) 102, a transistor (a descending drive unit according to the present invention) 104, and a submergence control unit 106. Yes.
[0053]
According to this embodiment, the descent drive units 102 and 104 that operate in response to the window lowering request during submergence and the submergence control unit 106 through the submergence control unit 106 that operates during submergence, the window control unit 105 that operates during non-submergence, Since the power supply circuit unit 107 and the ascending drive units 101 and 103 are mounted on a different printed circuit board and the printed circuit boards 100 and 100 ′ are spatially separated by a partition plate 400 ′, It is possible to prevent a possibility that an undesired current leak occurs between the two printed circuit boards 100 and 100 ′ and the window elevating motor malfunctions.
[0054]
The structure of this embodiment is not limited to the circuit of the first embodiment shown in FIG. 1, but the power supply to the power circuit section 107, the window control section 105, and the ascending drive sections 101 and 103 is maintained as usual even when submerged. It can also be applied to a circuit configuration.
[Brief description of the drawings]
FIG. 1 is a circuit diagram of a power window device having a submergence sensor according to a first embodiment.
FIG. 2 is a circuit diagram of a submergence control unit of FIG.
FIG. 3 is a circuit diagram of a power window device having a submergence sensor according to a second embodiment.
4 is a plan view of a power window device having a submergence sensor according to Embodiment 3. FIG.
FIG. 5 is a front view of the apparatus of FIG.
6 is a perspective view of the partition plate shown in FIGS. 4 and 5. FIG.
7 is a plan view of a power window device having a submergence sensor according to Embodiment 4. FIG.
8 is a front view of the apparatus of FIG.
FIG. 9 is a circuit diagram of a power window device having a conventional submergence sensor.
[Explanation of symbols]
105 Window Control Unit 106 Submergence Control Unit 107 Power Supply Circuit Unit 201 Window Lifting Operation Switch 202 Window Lowering Operation Switch M Window Lifting Motor

Claims (7)

A window lifting motor;
Operation switches for raising and lowering the window;
A submergence sensor configured to detect a submergence by a decrease in electrical resistance between the submergence detection electrodes formed by a pair of submergence detection electrodes disposed apart from each other;
A window control unit for performing normal control for raising and lowering the window raising and lowering motor based on an operation signal of the operation switch;
A submergence control unit that preferentially executes submergence control that prohibits the window elevating motor from being raised when submergence is detected by the submergence sensor;
A power supply circuit section for supplying a power supply voltage to the window control section;
With
The power window device with a submergence sensor, wherein the submergence control unit prohibits power supply from the power supply circuit unit to the window control unit when the submergence is detected. A window lifting motor;
Operation switches for raising and lowering the window;
A submergence sensor configured to detect a submergence by a decrease in electrical resistance between the submergence detection electrodes formed by a pair of submergence detection electrodes disposed apart from each other;
A window control unit for performing normal control for raising and lowering the window raising and lowering motor based on an operation signal of the operation switch;
A submergence control unit that preferentially executes submergence control that prohibits the window elevating motor from being raised when submergence is detected by the submergence sensor;
A power supply circuit section for supplying a power supply voltage to the window control section;
A power switch for opening and closing power supply to the window control unit and the power circuit unit;
With
The power window device with a submergence sensor, wherein the submergence controller cuts off the power switch when the submergence is detected. A motor for raising and lowering the window;
Operation switches for raising and lowering the window;
An ascending drive unit for raising the motor;
A lowering drive unit for lowering the motor;
A submergence sensor configured to detect a submergence by a decrease in electrical resistance between the submergence detection electrodes formed by a pair of submergence detection electrodes disposed apart from each other;
A window control unit for performing normal control to raise and lower the window elevating motor by controlling the ascending drive unit and the descent drive unit based on an operation signal of the operation switch;
A submergence control unit that preferentially executes submergence control that prohibits the window elevating motor from being raised when the submergence sensor detects submergence, and enables the motor to descend through the descent drive unit;
A wiring board on which the ascending drive unit, the descending drive unit, the window control unit, and the submergence control unit are mounted;
A partition plate that partitions the descending drive unit and the submersion control unit and at least the window control unit;
A power window device having a submergence sensor. In the power window device having the submergence sensor according to claim 3,
The power window apparatus having a submergence sensor, wherein the partition plate is fixed to the wiring board. In the power window device having the submergence sensor according to claim 3,
The power window device having a submergence sensor, wherein the partition plate protrudes from an inner surface of a case accommodating the wiring board toward the wiring board and contacts the wiring board. A motor for raising and lowering the window;
Operation switches for raising and lowering the window;
An ascending drive unit for raising the motor;
A lowering drive unit for lowering the motor;
A submergence sensor configured to detect a submergence by a decrease in electrical resistance between the submergence detection electrodes formed by a pair of submergence detection electrodes disposed apart from each other;
A window control unit for performing normal control to raise and lower the window elevating motor by controlling the ascending drive unit and the descent drive unit based on an operation signal of the operation switch;
A submergence control unit that preferentially executes submergence control that prohibits the window elevating motor from being raised when the submergence sensor detects submergence, and enables the motor to descend through the descent drive unit;
A first wiring board on which the descending drive unit and the submersion control unit are mounted;
A second wiring board on which at least the window control unit is mounted;
A power window device having a submergence sensor. In the power window device having the submergence sensor according to claim 6,
Both the wiring boards are housed in the same case,
The power window device having a submergence sensor, wherein the case includes a partition plate that partitions the wiring boards.

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