JPH0658043A - Power window drive control device - Google Patents

Abstract

PURPOSE:To secure the safety without continuing pinching-in of foreign matter even though such matter lies on the way of a window glass moving in the direction of closing. CONSTITUTION:If any foreign matter exists in the direction in which a window glass rises, a latch circuit 92 is set in conformity to the output signal from a motor over-load current sensing circuit 90 to sense over-current in a motor 12 and the output signal from a full-close sensor 96 to sense that the window glass is not fully closed, and a transistor 26 is turned off while another 28 is turned on, and a relay 16 is actuated to rotate the motor 12 reversely, and the window glass is sunk. If at this time, the push on a manual switch 50 is continued, a latch circuit 54 is not reset, and the motor 12 continues reversing until the manual switch is turned off. While the window glass is not fully closed and approx. 10sec after the manual switch is turned on, the transistor 26 is turned off and the other 28 turned on in conformity to the signal given by a timer circuit 74, and the window glass is sunk.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window drive control device, and more particularly to a power window drive control device for vertically moving a window glass of a vehicle by a driving force of a motor.

[0002]

2. Description of the Related Art Generally, on a driver's seat side of a vehicle, a manual switch and an automatic switch are provided as a power window switch for vertically moving a window glass of the vehicle.

In the auto switch, when the up-side contact or the down-side contact is turned on, the motor continues to be driven even if the hand is released, and the window glass is moved until it is fully closed or fully opened. For example, when moving the window glass from the fully open state to the fully closed state, when the window glass is in the fully closed state, such movement is blocked by the window frame or the like, and the drive current of the motor fluctuates. The amount of change in the drive current of the motor is detected, and when it exceeds a predetermined value, it is determined that the movement of the window glass has stopped, and the motor is stopped.

On the other hand, the manual switch is for manually operating the vertical movement of the window glass. When the occupant presses the switch in a desired direction, the window glass moves in a direction corresponding to the pressing, and the window glass is moved. When the desired position is reached, the pressure is released. Therefore, the window glass can be stopped at a predetermined position.

Here, for example, when the auto switch is on, it has been proposed to detect an abnormal current when a foreign object is caught and to stop or reverse the drive of the motor.

[0006]

However, regardless of whether the conventional manual switch or the automatic switch for the power window is operated by the occupant, the occupant is required to operate the window glass up / down instruction as described above. When a switch is continuously turned on to instruct the window glass to rise by performing an operation to continue pressing one of the switches, even if foreign matter is present during the window glass is rising,
There is a problem that the window glass keeps rising and continues to pinch foreign matter.

The present invention has been made to solve the above problems, and when a foreign substance is present in the rising direction of a window glass,
An object of the present invention is to provide a power window drive control device that does not continue to pinch foreign matter.

[0008]

In order to achieve the above object, the present invention is a power window drive control device for opening and closing a window glass of a vehicle by a driving force of a motor, and instructing closing of the window glass. A switch, a measuring unit that measures an elapsed time after the switch is instructed to close the window glass, a sensor that detects whether the window glass is fully closed, and a current flowing through the motor when the window glass is closed is predetermined. A current detecting means for detecting that the current exceeds a predetermined value, and a first state in which the current detecting means detects that the current flowing through the motor exceeds a predetermined value, and the sensor does not detect that the window glass is fully closed. , And in the case of at least one of the second state in which the elapsed time exceeds the predetermined time due to the instruction to close the window glass,
The drive control means for stopping the motor or reversing it for a predetermined time and then stopping the motor, and after stopping the motor by the drive control means, while the window closing instruction is continued by the switch, the window And a prohibition means for prohibiting the driving of the motor so that the glass does not move closed.

[0009]

The power window drive control device of the present invention opens and closes the window glass of the vehicle by the driving force of the motor, has a switch for instructing the closing of the window glass, and uses a sensor such as a limit switch. , The window glass is fully closed. This switch includes, for example, a manual switch and an automatic switch that are turned on / off by pressing. The measuring means measures an elapsed time after the window is instructed to close the window glass. The current detecting means detects that the current flowing through the motor when the window glass rises exceeds a predetermined value. The drive control means is in a first state in which the current detection means detects that the current flowing through the motor exceeds a predetermined value and the sensor does not detect that the window glass is fully closed. In the case of at least one of the second states in which the time has exceeded the predetermined time, the motor is stopped or reversed for a predetermined time and then stopped. The prohibition means, after stopping the motor by the drive control means, while the instruction to close the window glass is continued by the switch,
The drive of the motor is prohibited so that the window glass does not move closed. Therefore, even if there is a foreign object while the window glass is rising when a closing instruction such as continuous pressing of the manual switch and auto switch is given, this state is detected and the motor is stopped or reversed for a predetermined time. It is possible to prevent a foreign substance from being caught by stopping after stopping.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a power window drive control device 10 according to this embodiment.

Both ends of the power window driving motor 12 are connected to common terminals 14A and 16A of the first and second relay circuits 14 and 16, respectively. The first relay circuit 14 is for raising the window glass, and the first contact 14B is grounded via a small resistance (about 10 mΩ). The second contact 14C is connected to the power supply line 20. The first relay circuit 14 includes a first coil 22, and when the first coil 22 is not excited, the first contact 1
4B, and when the first coil 22 is excited, it switches to the second contact 14C. The power supply line 20 is connected to a terminal IG connected to a battery BT mounted on a vehicle via an ignition switch (not shown), and is supplied with electric power when the ignition switch (not shown) is turned on.

On the other hand, the second relay circuit 16 is for lowering the window glass, and the first contact 16B is grounded via the minute resistor 18. This second relay circuit 16 has a second
When the second coil 24 is not excited, it is switched to the first contact 16B, and when the second coil 24 is excited, it is switched to the second contact 16C. It has become.

Each of the first and second coils 22 and 24 has one end connected to the power supply line 20 and the other end connected to the collectors of the NPN first and second transistors 26 and 28. . These first and second transistors 2
The emitters of 6, 28 are grounded and connected to their respective collectors via Zener diodes 44, 46. Therefore, when the transistor 26 is turned on, the first coil 22 is excited, the first relay circuit 14 is switched to the second contact 14C, and the motor 12 can be normally rotated to raise the window glass. Further, when the transistor 28 is turned on, the second coil 24 is excited, the second relay circuit 16 is switched to the second contact 16C, and the motor 12 can be rotated in the reverse direction to lower the window glass.

The common terminal 14A of the first relay circuit 14 is connected to the power supply line 42 via the resistor 30 and the diode 34, and the common terminal 1 of the second relay circuit 16 is connected.
6A is a power supply line 42 via a resistor 32 and a diode 36.
It is connected to the. This power line 42 has a capacitor 4
One end of 0 is connected and the other end is grounded. In addition, the cathode of the Zener diode 38 is connected to the power supply line 42, and the anode is grounded. Therefore, when the manual switch 50 is pressed, power is supplied to the power line through the resistor 30 and the diode 32, and the power line 42
A power source B serving as a constant voltage power source is formed by the Zener diode 38 and the capacitor 40.

The power line 20 has a manual switch 50 for raising the window glass and a manual switch 5 for lowering the window glass.
One end of each of the two is connected. The other end of the manual switch 50 is connected to the first input end 60 of the OR circuit 60 via the resistor 54.
It is connected to A. The other end of the manual switch 52 for lowering the window glass is connected to the first of the OR circuit 62 via the resistor 56.
It is connected to the input end 62A.

The OR circuits 60 and 62 are constituent elements of the logic circuit section 100 for turning on and off each of the transistors 26 and 28 for operating the first and second relay circuits 14 and 16. The output terminal 76C of the AND circuit 76 is connected to the second input terminal 62B of the OR circuit 60. The first input terminal 76A of the AND circuit 76 has a resistor 30
And the diode 34, and the second input terminal 76B of the AND circuit 76 is connected to the auto switch 48 described later.
Is connected to the output terminal 70B of the first timer circuit 70 which is turned on and becomes high level. Further, the output end 60C of the OR circuit 60 is connected to the second input end 82B of the AND circuit 82 whose output end 82C is connected to the base of the transistor 26, and the first input end 82A of the AND circuit 82 has A
The output terminal 80C of the ND circuit 80 is connected via an inverter 81. The first input terminal of the AND circuit 80 is
It is connected between the resistor 32 and the diode 36.
A second input terminal 80B of the ND circuit 80 is connected to an output terminal 92B of a latch circuit 92 described later. Therefore, AND
The transistor 26 is turned on / off according to the inverted signal of the signal obtained by the logical product of the circuit 80 and the signal of the logical product of the logical sum signals of the OR circuit 60.

On the other hand, the OR circuit 62 includes the first, second and third OR circuits.
Input terminals 62A, 62B, and 62C, and the second input terminal 62B is connected to the output terminal 78C of the AND circuit 78. The first input terminal 78A of the AND circuit 78
Is connected to the output terminal 70B of the first timer circuit 70, and the second input terminal 78B is connected between the resistor 32 and the diode 36. Further, the output terminal 62 of the OR circuit 62
D is connected to the base of the transistor 28. Therefore, the transistor 28 is turned on / off according to the signal obtained by the logical sum of the input signals of the OR circuit 62.

A manual switch 50 for raising the window glass,
The mechanical switch 52 for descending the window glass is attached with a mechanically interlocked auto switch 48 which is turned on when the operation amount of pressing the manual switch 50, 52 is large. For example, when the operation amount of the window glass raising manual switch 50 is small, the manual switch 50 is turned on and the auto switch 48 is turned off, and when the operation amount is large, both of them are turned on. The movable terminal 48A of the auto switch 48 is connected to the power supply line 20, and the common terminal 48B is connected to the first timer circuit 70 via the resistor 58.
Is connected to the input terminal 70A. The first timer circuit 70 outputs a high level signal from the time when the auto switch 48 is turned on (rising edge of the input signal), and goes low after a predetermined time t1 has elapsed since the auto switch 48 was turned off. The signal of is output. The predetermined time t1 is set in advance to a time (about 10 seconds in this embodiment) sufficient to fully open the window glass or fully open the window glass.

The first timer circuit 70 has a reset terminal 7
0C, and the reset terminal 70C is connected to the output terminal 66C of the OR circuit 66. The first input terminal 66A of the OR circuit 66 has a first input terminal 64A connected between the resistor 30 and the diode 34 and the resistor 32 and the diode 3.
It is connected to the output terminal 64C of the AND circuit 64 having the second input terminal 62B connected between the six terminals. The second input terminal 66B of the OR circuit 66 has a first motor lock detection circuit 88.
Is connected to the output terminal 88B of.

The first motor lock detection circuit 88 is
The detection circuit is composed of a comparison circuit, a current-voltage conversion circuit, etc. for detecting that the window glass is fully closed. An input end 88A of the first motor lock detection circuit 88 is connected to one end 18A of the minute resistor 18 (anti-ground side in FIG. 1), and an input current is a predetermined current I1 (in this embodiment, a predetermined current I1). , 15 ± 1 A), a high level signal is output. Further, one end 18A of the minute resistor 18 is also commonly connected to the input end 90A of the second motor lock detection circuit 90.

The second motor lock detection circuit 90 is a detection circuit composed of a comparison circuit, a current-voltage conversion circuit, etc., for detecting that a foreign object is caught when the window glass rises. The current is a predetermined current I
When it is 2 (7 ± 1 A in this embodiment), a high level signal is output. The output end 90B of the second motor lock detection circuit 90 is connected to the second input end 68B of the OR circuit 68. The output terminal 68C of the OR circuit 68 is A
It is connected to the second input end 86B of the ND circuit 86, and the first input end 68A is connected between the resistor 30 and the diode 34 via the third timer circuit 74. The third timer circuit 74 is a timer for monitoring the rising duration time of the window glass, and one is a falling one-shot signal generating circuit, which starts rising of the window glass for a predetermined time t3 (the present embodiment). In the example, after a lapse of about 10 seconds), a high-level pulse signal (for example, a pulse width of about 10 msec) is output, and the other is a delay circuit, which starts rising of the window glass for a predetermined time t3. It is configured to output a high level signal after a lapse of time.

The first input terminal 86A of the AND circuit 86 is O
It is connected to the output end 60C of the R circuit 60, and the third input end 86C is connected to, for example, the terminal 96A of the fully closed sensor 96 arranged near the upper end of the window frame of the vehicle. This terminal 96A is connected to the power source B via the resistor 94,
6B is grounded. This fully closed sensor switch 96
Is turned on when the window glass is fully closed, and the terminal 96
A and 96B are connected to each other, and the third input terminal 86C of the AND circuit 86 is grounded via the fully closed sensor 96 to be at a low level when the window glass is fully closed, so that the window glass is not fully closed. In the state, it becomes high level via the resistor 94.

The output terminal 86D of the AND circuit 86 is connected to the input terminals 92A of the latch circuit 92 and the third timer circuit 72,
72A is commonly connected. The latch circuit 92 is composed of a flip-flop circuit or the like, and holds the output signal at a high level when the input signal rises. Further, the timer circuit 72 outputs a high level signal in synchronization with the rising edge of the input signal and delays the falling edge of the input signal by a predetermined time t2 (for example, 0.2 seconds) to reset the latch circuit 92. It is configured to output a low level signal for Output terminal 72B of timer circuit 72
Is connected to the second input terminal 84B of the AND circuit 84 via the inverter 85, and the first input terminal 84A of the AND circuit 84 is connected to the first input terminal 84B of the AND circuit 60 via the inverter 83.
It is connected to the input end 60A. The output terminal 84C of the AND circuit 84 is connected to the reset terminal 92C of the latch circuit 92. Therefore, when the output signal of the AND circuit 84 becomes high level, the latch circuit 92 is reset and the output signal of the latch circuit 92 becomes low level.

The operation of the present embodiment will be described below with reference to the time charts of FIGS. 2 and 3 together with the operation of the logic circuit 100. First, when raising the window glass from the stopped state, the occupant presses (turns on) the manual switch 50 for raising the window glass. Therefore, as shown in FIG.
A high level signal is supplied to the first input terminal 60A of the R circuit 60 via the resistor 54, and a high level signal is input to the second input terminal 82B of the AND circuit 82.

When the manual switch 50 is pressed, neither of the relay circuits 22 and 24 is de-energized, so that both ends of the motor 12 are grounded via the minute resistor 18. Therefore, since the resistance 32 and the diode 36 are at a low level, the output signal of the AND circuit 80 is at a low level.
The low-level signal output from the AND circuit 80 is inverted by the inverter 81, and the AND circuit 82
A high level signal is input to the first input end 82A of the. Therefore, the output signal of the AND circuit 82 becomes a high level, the transistor 26 is turned on by this high level signal, and the transistor 22 is turned on, so that the coil 22 of the relay circuit 14 is excited and cut to the second contact 14C. In turn, the motor 12 rotates in the normal direction and the window glass rises.

Further, when the operation amount of the manual switch 50 is large and the auto switch 48 is turned on, the power when the ignition switch (not shown) is turned on to the input end 70A of the first timer circuit 70 via the resistor 58. A high level signal is input. First timer circuit 70
Outputs a high level signal to the AND circuits 76 and 78 for a predetermined time t1 from the rising of this input signal. When the window glass rises, the level between the resistor 30 and the diode 34 becomes high level, and the AND circuit 76 outputs a high level signal. Therefore, the transistor 26 is continuously turned on until the output signal from the first timer circuit 70 becomes low level, the motor 12 is normally rotated by the excitation of the coil 22, and the window glass continues to rise.

When the manual switch 52 for lowering the window glass is turned on while the window glass is being raised by turning on the auto switch 48, the resistor 30 and the diode 34 are turned on.
And between the resistor 32 and the diode 36 become high level, and the AND circuit 64 outputs a high level signal to the first timer circuit 70 via the OR circuit 66. As a result, the first timer circuit 70 is reset and outputs a low level signal. Therefore, the AND circuits 76 and 8
The output signal of 2 becomes low level, and the transistor 26,
By turning off 28, the coils 22, 24
Is de-excited and the motor 12 stops rotating.

While the motor 12 is rotating, the motor lock detection circuits 88 and 90 detect the current flowing through the motor 12. When the raised window glass is fully closed,
The motor 12 is overloaded and overcurrent I1 (for example, 1
5A), the first motor lock detection circuit 88 outputs a high level signal to the first timer 70 via the OR circuit 66. Therefore, the first timer circuit 70 is reset, the output signals of the AND circuits 76 and 82 become low level in the same manner as described above, the coil 22 is de-excited, and the rotation of the motor 12 is stopped.

Here, if the ascending is continued in the state where an obstacle such as a foreign substance is present during the full closing of the window glass in the ascending direction, the ascending is blocked before the window glass is fully closed, and the foreign substance may be caught. Become. Due to the entrapment of the foreign matter, the motor 12 is overloaded and the abnormal current I2 (for example, 7
A) occurs (FIG. 2 (2)). The second motor lock detection circuit 90 outputs a high level signal to the AND circuit 86 via the OR circuit 68 (FIG. 2 (3)). At this time, since the fully closed sensor 96 is off and the window glass is rising, the output signal of the OR circuit 60 is at a high level.
A high level signal is input to each of the input terminals 86A, 86B, 86C of the ND circuit 86. Therefore, the AND circuit 86
Outputs a high level signal to the latch circuit 92 and the second timer circuit 72, and the latch circuit 92 outputs a high level signal to the AND circuit 80 and the OR circuit 62 at the rising edge of this signal.

The OR circuit 62 outputs a high level signal to turn on the transistor 28 and the coil 24.
Is excited. By exciting the coil 24, the relay circuit 16 is switched to the second contact 16C, power is supplied to the terminal 12B of the motor 12, and both terminals 12 of the motor 12 are supplied.
Both A and 12B are connected to the power source, and the motor 12 is stopped. On the other hand, the AND circuit 80 is connected to the terminal 12 of the motor 12.
The high level signal output from the latch circuit 92 and the high level signal generated when the power is supplied to B are output as the high level signal. Therefore, a low-level signal is input to the AND circuit 82 via the inverter 81, the AND circuit 82 outputs a low-level signal, and the transistor 26 is turned off. As a result, the coil 22 is de-energized, and the relay circuit 14
Switches to the first contact 14B, and the terminal 1 of the motor 12
2A becomes the ground side, so that the motor 12 reversely rotates and the window glass starts descending.

By rotating the motor 12 in the reverse direction,
The overloaded state of the motor 12 is eliminated, and the motor lock detection circuit 90 outputs a low level signal. At this time,
Since the OR circuit 60 outputs a low level signal as described above, the input signal of the AND circuit 86 becomes low level, and the output signal of the AND circuit 86 falls to low level. From the falling edge of the output signal of the AND circuit 86, as shown in FIG.
Outputs a signal which is delayed by a predetermined time t2 and becomes low level. Therefore, the second input terminal 84B of the AND circuit 84
A high-level signal is input to the inverter via the inverter 85. At this time, if the upward manual switch 50 is continuously pressed, the AND circuit 8 is passed through the inverter 83.
Since the signal input to the first input terminal 84A of No. 4 is low level ((5) in FIG. 2), the AND circuit 84 outputs a low level signal and the latch circuit 92 is not reset. Therefore, the signal output from the latch circuit 92 continues to be at high level, and the motor 12 continues to rotate in reverse. On the other hand, when the raising manual switch 50 is turned off, each of the signals input to the AND circuit 84 becomes high level, the latch circuit 92 is reset ((6) in FIG. 2), and the signal output from the latch circuit 92 is output. Goes low. As a result, the signal output from the OR circuit 62 becomes low level, the transistor 28 is turned off, and the coil 24 is de-energized. Therefore, the relay circuit 16 is switched to the first contact 16B, both ends of the motor 12 are grounded, the rotation of the motor 12 is stopped, and the lowering of the window glass is stopped.

When the foreign matter is caught, for example, when the occupant recognizes it and turns off the raising manual switch 50, a high level signal is input to the AND circuit 62 via the inverter 83. , Second timer circuit 72
Since the signal output from the latch circuit 92 is a signal that is delayed by the predetermined time t2 and becomes the low level, the output signal from the latch circuit 92 is the predetermined time t2 even when the manual switch 50 is turned off.
Outputs a high level signal only, and the motor 12 rotates in the reverse direction. Therefore, the window glass descends for a predetermined time and stops.

As described above, even if there is a foreign substance while the window glass is rising and the foreign substance is caught, the motor can be rotated in the reverse direction.

When the raising manual switch 50 is turned on, the third timer circuit 74 causes the third timer circuit 74 to operate for about 10 seconds under the condition of a predetermined time t3 (t3 <t1), as shown in FIG. 3 (2). ) Followed by a pulse signal. Therefore, when the window switch is not fully closed after the elevating manual switch 50 is turned on for about 10 seconds, all the input signals of the AND circuit 86 become high level, and the AND circuit 86 outputs a high level signal. The latch circuit 54 outputs a high level signal. Therefore, similarly to the above, the transistor 28 is turned on, the coil 24 is excited, and the terminal 12 of the motor 12 is excited.
B becomes high level, therefore the transistor 26 is turned off, the coil 22 is de-energized, the motor 12 is rotated in the reverse direction, and the descent of the window glass is started.

At this time, when the manual switch 50 is off, the signal input to the AND circuit 84 via the inverter 83 is at the high level, and the output signal of the second timer circuit 72 is the third signal. Since the falling edge of the pulse signal output from the timer circuit 74 is delayed by a predetermined time t2 and becomes low level ((3) in FIG. 3), the latch circuit 92 is reset at the falling edge of the output signal of the second timer circuit 72. To be done. By resetting the latch circuit 54, the transistor 28 is turned off and the relay 24 is de-energized,
The motor 12 stops and the window glass stops descending.

On the other hand, when the manual switch 50 is continuously pressed to be in the ON state, the AN is set via the inverter 83.
Since the signal input to the D circuit 84 maintains a low level, the latch circuit 92 is not reset and continues to output a high level signal. Therefore, the transistor 28 is kept on, the motor 12 continues to rotate in the reverse direction, and the window glass continues to descend.

Therefore, when the rising of the window glass is not completed within a predetermined time (about 10 seconds), such as when there is a soft foreign object during the rising of the window glass or when the foreign object is urged to the window glass. Even, the motor is reversed. Further, even when the overload current of the motor 12 cannot be detected or the motor lock detection circuits 88 and 90 are damaged, the rising time of the window glass can be monitored to detect a foreign substance while the window glass is rising, The motor can be reversed.

Next, an equivalent circuit of a logic circuit for driving the relays 14 and 16 in the block diagram of the schematic configuration of the power window drive control device 10 shown in FIG. 1 will be described.

FIG. 5 shows a logic circuit portion for operating the first relay circuit 14 for raising the window glass, that is, the Zener diode 44, the transistor 26, and the AND circuit 8.
2, an equivalent circuit of a circuit composed of the OR circuit 60 and the inverter 81 is shown.

An input terminal equivalent to the first input terminal 60A of the OR circuit 60 is connected to the emitter of the transistor 106 via the resistor 103. An input terminal equivalent to the second input terminal 60B is connected to the base of the transistor 106,
The collector of the transistor 106 is connected to the power source B as a constant voltage power source via the resistor 104. The emitter of the transistor 106 is a terminal equivalent to the output terminal 60C of the OR circuit 60, is connected to the base of the transistor 26 described above via the resistor 102, and is connected to the collector of the transistor 107. The emitter of the transistor 107 is grounded and the base is the inverter 8
1 is configured as a terminal equivalent to the input terminal.

FIG. 6 shows a logic circuit portion for operating the second relay circuit 16 for lowering the window glass, that is, the Zener diode 46, the transistor 28, and the OR circuit 62.
The equivalent circuit of the circuit constructed by is shown.

An input terminal equivalent to the first input terminal 62A of the OR circuit 62 is connected to the emitter of the transistor 115 via the resistor 111. An input terminal equivalent to the second input terminal 60B is connected to the base of the transistor 114,
The emitters of the transistors 114 and 115 are connected together. An input terminal equivalent to the third input terminal 60C is connected to the base of the transistor 115. The collectors of these transistors 114, 115 are resistors 112, 11 respectively.
3 is connected to the power source B as a constant voltage power source. The emitters of these transistors 114 and 115 are
It is configured to be connected to the base of the transistor 28 described above via the resistor 110.

The peripheral circuit of the power supply B as the constant voltage power supply in the above embodiment can have a circuit configuration in which the diode shown in FIG. 7 is added. That is, the cathodes of diodes 34, 36, 117, 118 are connected together, the anode of diode 117 is connected between switch 50 and resistor 54, and the anode of diode 118 is connected between switch 52 and resistor 56. And By doing so, the switches 50, 52
When any of the above is turned on, the power source B as a constant voltage can be formed.

Therefore, it is possible to form a circuit structure in which the relay circuit 14 or 16 is energized for the first time after being excited, and a circuit structure without dark current can be formed in the non-excitation state.

In the above embodiment, the coils 22 and 24 are turned on and off according to the logic of the logic circuit section 100 according to the on / off state of the switch.
An example in which the coils 22 and 24 are directly turned on and off by the manual switches 50 and 52 has been described as another example. In this embodiment, the same parts as those in the above embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 4, the other end of the first coil 22, one end of which is connected to the power supply line 20, is grounded through a manual switch 50 for raising the window glass. Similarly,
The other end of the second coil 24 is grounded via a manual switch 52 for lowering the window glass. Therefore, when the manual switch 50 is pressed and the manual switch 50 is turned on, the first switch
Of the coil 22 is excited and switched to the second contact 14C, and the motor 12 rotates in the normal direction. When the manual switch 52 is pressed and the manual switch 52 is turned on, the second coil 24 is excited and switched to the second contact 16C, and the motor 12 rotates in the reverse direction.

A manual switch 50 for raising the window glass,
The mechanical switch 52 is attached to the manual switch 52 for lowering the window glass, as in the above embodiment. The movable terminal 48A of the auto switch 48 is connected to the first timer 7 via the inverter 120.
0 is connected to the input terminal 70A. The first timer circuit 70 outputs an auto signal when the auto switch 48 is pressed.
After turning off 8, the high level signal is output for a predetermined time. The output terminal 70B of the first timer circuit 70 is connected to the first input terminal 128A of the AND circuit 128 and the first input terminal 130A of the AND circuit 130. The first input terminal 126A of the OR circuit 126 is an AN having the same configuration as in the above embodiment.
It is connected to the output end 64C of the D circuit 64. The output terminal 126C of the OR circuit 126 is connected to the reset terminal 70C of the first timer circuit 70.

The second input terminal 128 of this AND circuit 128
B is connected between the resistor 30 and the diode 34, and AND
The second input end 130B of the circuit 130 is connected between the resistor 32 and the diode 36. These AND circuits 128,
The output terminals 128C and 130C of the transistor 130 are connected to the transistor 2
It is connected to the bases of 6, 28. Therefore, when the first timer circuit 70 outputs the auto signal, the AND corresponding to the rotation of the motor 12, that is, the up / down movement of the window glass is performed.
The signal resulting from the logical product of either of the circuits 128 and 130 becomes high level, and either of the corresponding transistors 26 and 28 is turned on.

The second input terminal 126B of the OR circuit 126
An output terminal 88B of the first motor lock detection circuit 88 is connected to the motor lock detection circuit 88 in order to release the auto signal when the window glass is fully closed.

The input terminal 74A of the third timer circuit 74 is connected between the resistor 30 and the diode 34. The third timer circuit 74 is a falling one-shot signal generating circuit or a delay circuit for monitoring the rising duration time of the window glass as in the above-mentioned embodiment, and starts rising of the window glass for a predetermined time t3. After a lapse of about 10 seconds in this embodiment, a high level pulse signal (for example, a pulse width of about 10 msec) or a high level signal is output.

Therefore, if the window glass starts to rise due to the pressing of the auto switch 48 and the window glass is not in the fully closed state even after the elapse of the predetermined time t3, the third signal is output by the third timer circuit 74 to generate the third signal. The timer circuit 72 outputs a high level signal and the transistor 28 is turned on.
At this time, when the transistors 26 and 28 are both turned on, the signal resulting from the logical product of the AND circuit 64 becomes high level, and the first timer circuit 70 is reset through the OR circuit 126. This causes the transistor 2
6 is turned off, the transistor 28 is turned on only, the motor 12 is rotated in the reverse direction, and the window glass is lowered.

As described above, in the other embodiment, even when the window glass is automatically moved up and down by the structure in which the motor is directly rotated by turning the manual switch on and off, the foreign matter trapped during the raising of the window glass is trapped. It will not continue.

In the above embodiment, the case where the window glass is moved up and down has been described. However, the present invention is not limited to this, and the case where the sunroof or the like arranged above the vehicle is moved horizontally. In addition, it can be easily applied even when the window glass moves in an oblique direction or a lateral direction.

[0055]

As described above, according to the present invention, even when a foreign object is caught during the rising of the window glass when the window glass is automatically or manually instructed to be lifted, the foreign object is continuously caught. The effect is that there is nothing to do.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a power window drive control device according to the present embodiment.

FIG. 2 is a time chart when an overcurrent flows through the motor while the window glass of the power window drive control device is rising.

FIG. 3 is a time chart when the window glass rises while continuing the predetermined time of the power window drive control device.

FIG. 4 is a block diagram showing another embodiment of the power window drive control device.

5 is a circuit diagram showing an example of an equivalent circuit of a rising relay circuit peripheral logic circuit in the power window drive control device of FIG.

6 is a circuit diagram showing an example of an equivalent circuit of a descending relay circuit peripheral logic circuit in the power window drive control device of FIG.

7 is a circuit diagram showing another example of the periphery of a power supply forming unit in the power window drive control device of FIG.

[Explanation of reference numerals] 10 power window drive control device 12 motor 14 first relay circuit 16 second relay circuit 48 auto switch 50 manual switch (for raising) 52 manual switch (for lowering) 88 first motor lock detection circuit 90 Second Motor Lock Detection Circuit 92 Latch Circuit

Claims (1)

[Claims] 1. A power window drive control device for opening and closing a window glass of a vehicle by a driving force of a motor, comprising: a switch for instructing closing of the window glass; and a switch for instructing closing of the window glass by the switch. A measuring means for measuring the elapsed time of, a sensor for detecting the full closing of the window glass, a current detecting means for detecting that the current flowing through the motor when the window glass is closed exceeds a predetermined value, the current A first state in which the detection means detects that the current flowing through the motor exceeds a predetermined value and the sensor does not detect that the window glass is fully closed, and the window time is instructed to be closed and the elapsed time is In the case of at least one of the second states that exceeds the predetermined time, the drive control that stops or reverses the motor for a predetermined time and then stops. And a prohibiting means for prohibiting the driving of the motor so that the window glass does not move closed while the window closing instruction is continued by the switch after stopping the motor by the drive control means. And a power window drive control device including.