JPH0235180A - Controller for vehicle on-off member - Google Patents

Abstract

PURPOSE:To make fail-safe control performable at a time when a circuit between a motor and a control circuit gets out of order by installing such a means that stops any drive of the motor when a measured current value is smaller than the value of a current flowing in the motor at the time of motor rotation. CONSTITUTION:A power circuit 1, an ignition switch signal circuit 2, a motor drive circuit 4, sun roof on-off, tilting switch signal input circuits 11-14, limit switch signal input circuits 15, 16 and a current detector circuit 5 or the like are connected to a microcomputer MC, and a motor M driving a roof panel 22 is connected to the drive circuit 4 as well. When a current flowing in this motor M during movement of the panel 22 becomes less than the specified value, any drive of the motor M is stopped. In addition, even if the motor is stopped by a trouble judgment in leaving the panel 22 opened intact, this motor M rotates as usual if a control switch SS is continuously pressed, so that the panel 22 is closed, thus it is serviceable in case of rain and, what is more, for prevention against burglary.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a safety device for a control device that controls opening/closing members for a vehicle, and relates to a safety device for a control device that controls opening/closing members for a vehicle. It can be used as a control device for opening and closing.

(Prior Art) Conventionally, control devices have been developed that automatically control opening members such as light shielding plates, opaque plates, and panels, which open and close openings such as vehicle windows, doorways, and roof openings, in response to, for example, switch operations. ing. In controlling such an opening member, there is a risk that a part of the body, such as a hand or head, may be caught between the opening and the vehicle body when the opening is closed. Therefore, there is a need for a device that detects the load on the motor that drives the opening member and stops or reverses the motor when the motor is overloaded. Such a safety device for opening/closing members is disclosed in, for example, Japanese Patent Application Laid-open No. 60
It is disclosed in the publication No.-141984. Here, we will introduce a motor that drives the opening member, an overload detection device that detects overload on the motor driver motor that rotates this motor, and a drive signal that is sent to the motor driver in response to switch operation. It is equipped with a control device that sends a drive stop signal to the motor driver.

(Problem to be Solved by the Invention) However, in the above-mentioned conventional technology, disconnection or short circuit of the signal line between the overload detection device that detects the overload of the motor and the motor, or failure of the overload detection device, etc. If you wake up,
The signal received by the control device from the overload detection device is either a signal that only indicates an overload, or a signal that does not indicate an overload. At this time, if a signal that does not indicate an overload is input to the control device, the motor will actually be locked and will not stop even if the motor is overloaded, resulting in a very dangerous situation.

Therefore, the technical object of the present invention is to provide a fail-safe system when the circuit between the motor and the control circuit breaks down.

[Structure of the Invention] (Means for Solving the Problems) The technical means used in the present invention to solve the above technical problems include an opening/closing member disposed on a vehicle, a motor for driving the opening/closing member, A control device for an opening/closing member on a vehicle, comprising a current measuring means for measuring a current flowing through the motor, and an overload protection means for stopping driving of the motor when the current measured by the current measuring means is large, further comprising: The present invention includes a motor drive stop means that stops driving the motor when the current value measured by the current measurement means is smaller than the current value flowing through the motor when the motor rotates.

Further, in addition to the above configuration, in a control device for an opening/closing member on a vehicle, which includes an operation switch and a motor driving means for driving the motor in response to an on-operation of the operation switch, the operation switch is turned on after the operation switch is turned on. The present invention further includes a motor drive stop means for stopping the drive of the motor when the current value measured by the current measuring means is smaller than the value of the current flowing through the motor during rotation of the motor when the motor is turned off.

(Operation) According to the technical means, if an overload is applied to the motor while the motor is being driven, the motor is stopped. Furthermore, when the current measuring means fails and no output is obtained from the current measuring means, the motor is similarly stopped.

Furthermore, it has an operation switch, and drives the motor in response to the ON operation of the operation switch, and then measures the motor current when the operation switch is turned OFF, and stops the motor when the measured value is low. In this way, even if the current measurement circuit has failed and the motor has stopped driving, the motor can still be driven by continuing to press the operation switch.

(Example) An embodiment of the present invention will be described based on the drawings.

1 and 2, a roof panel 22 that opens and closes an opening 21 of a roof 20 of an automobile is driven by a motor M. In FIG. This motor M is a motor drive circuit 4
It is connected to the. The motor drive circuit 4 is connected to output terminals OP2 and OF2 of the microcomputer MC.

In addition to the motor drive circuit 4, the microcomputer MC includes a power supply circuit 1. IC switch signal input circuit 2. OR gate OR, sunroof open/close switch signal input circuit 11
and 12. Sunroof tilting switch signal input circuit 13
and 14. Limit switch signal input circuits 15 and 16 are connected to buzzer output circuit 3 and current detection circuit 5.

Power supply circuit 1 is a constant voltage power supply, and its input terminal is connected to the terminal of battery E via relay MS.

Power supply circuit 1 includes transistor Ql.

It is composed of resistors R1 and 8 and a Zener diode FZD, and when the relay MS is idle, the voltage VB generated by the battery voltage is connected to the power supply voltage VCC of the microcomputer MC.
is being converted to .

The input terminal of the IC switch signal input circuit 2 is connected to the + terminal of the battery E via the ignition switch IG. The output terminal of the IC switch signal input circuit 2 is connected to the input terminal IPI of the microcomputer MC. The IC switch signal input circuit 2 includes resistors R2 to R4 and a transistor Q2, and when the ignition switch [G is open, it supplies the power supply voltage VCC to the input terminal IPI of the microcomputer MC, and when it is closed, it supplies the power supply voltage VCC to the input terminal IPI of the microcomputer MC. voltage to ground level.

The OR gate OR has two input terminals, one of which is a positive logic input terminal and the other is a negative logic input terminal. The positive logic input terminal is connected to the child terminal of the battery E via the ignition switch IC. The negative logic input terminal is the output terminal OP of the microcomputer MC.
Connected to 4. The output terminal of OR game 1-OR is connected to relay MS. OR game) OR excites the relay MS when the ignition switch IG is closed or by the Lo level output of the output terminal OP4 of the microcomputer MC, and closes the relay contact.

In other cases, the relay MS is de-energized and the relay contacts are opened.

The input terminal of the sunroof opening/closing switch signal input circuit 11 is connected to the terminal 5opn of the sunroof opening/closing switch SS, and the output terminal is connected to the input terminal IP2 of the microcomputer MC. Sunroof open/close switch signal input circuit 11
is composed of resistors R5 to R8 and transistor Q3. When the potential of the terminal 5opn of the sunroof opening/closing switch SS falls to the LO level, the sunroof opening/closing switch signal input circuit 11 inputs the input terminal I of the microcomputer MC.
When the power supply voltage CC is supplied to P2 and the terminal S open of the sunroof opening/closing switch SS is released, the potential of the input terminal IP2 of the microcomputer MC is lowered to the ground level.

The input terminal of the sunroof opening/closing switch signal input circuit 12 is connected to the terminal 5clS of the sunroof opening/closing switch SS, and the output terminal is connected to the input terminal IP3 of the microcomputer MC. Sunroof open/close switch signal input circuit 12
The U-way configuration is sunroof open/close switch signal input circuit 1.
It is equivalent to 1.

When the potential of the terminal Scls of the sunroof opening/closing switch SS falls to the LO level, the sunroof opening/closing switch signal input circuit 12 inputs the signal to the input terminal IP of the microcomputer MC.
When the power supply voltage ■CC is supplied to the microcomputer 3 and the terminal 5cls of the sunroof opening/closing switch SS is released, the potential of the input terminal ■P3 of the microcomputer MC is dropped to the ground level.

The sunroof opening/closing switch SS is a switch disposed inside the vehicle and operated by a passenger of the vehicle.

This sunroof opening/closing switch SS is a two-contact switch with a neutral function, and has three states: a neutral state, an open instruction state, and a close instruction state. The common terminal is connected to ground. Further, as described above, the terminal 5opn and the terminal 5cls are connected to the sunroof opening/closing switch signal input circuits 11 and 12, respectively. When the sunroof opening/closing switch SS is operated to the open instruction state, the common terminal and the terminal S opn are connected, a Lo level signal is sent to the sunroof opening/closing switch signal input circuit 11, and the input terminal of the sunroof opening/closing switch signal input circuit 12 is opened. . Conversely, when the sunroof opening/closing switch SS is operated to the close instruction state, the common terminal and the terminal 5cls are connected, and an LΩ level signal is sent to the sunroof opening/closing switch signal input circuit 12.
Leave the input terminal open. Further, when the sunroof opening/closing switch SS is operated to the neutral state, the input terminals of both the sunroof opening/closing switch signal input circuits 11 and 12 are opened.

The input terminal of the sunroof tilting switch signal input circuit 13 is connected to the terminal Sup of the sunroof tilting switch ST, and the output terminal is connected to the input terminal IP4 of the microcomputer MC. The circuit configuration of the sunroof tilting switch signal input circuit 13 is the same as that of the sunroof opening/closing switch signal input circuit 11.
is equivalent to

The sunroof tilting switch signal input circuit 13 supplies the power supply voltage VCC to the input terminal IP4 of the microcomputer MC when the potential of the terminal Suρ of the sunroof tilting switch ST falls to Lo level, and supplies the power supply voltage VCC to the input terminal IP4 of the microcomputer MC.
When terminal Sup of microcomputer M is released, microcomputer M
The potential of the input terminal IP4 of C is lowered to the ground level.

The input terminal of the sunroof tilting switch signal input circuit 14 is connected to the terminal Sdwn of the sunroof tilting switch ST, and the output terminal is connected to the input terminal IP5 of the microcomputer MC. Sunroof tilting switch signal input circuit 14
The circuit configuration is sunroof open/close switch signal input circuit 1
It is equivalent to 1.

When the potential of the terminal Sdwn of the sunroof tilting switch ST falls to the Lo level, the sunroof tilting switch signal input circuit 14 inputs the signal to the input terminal TP of the microcomputer MC.
When the terminal S_dwn of the sunroof tilting switch ST is released, the potential of the input terminal P5 of the microcomputer MC is lowered to the ground level.

The sunroof tilting switch ST is an operation switch disposed inside the vehicle, and is operated by a passenger of the vehicle.

This sunroof tilting switch ST is a two-contact switch with a neutral function, and has three states: a neutral state, an amplifier instruction state, and a down instruction state.

The common terminal is connected to ground. Further, as described above, the terminal Sup and the terminal Sdwn are respectively connected to the sunroof tilting switch signal input circuit 13 and 14. When the sunroof tilting switch ST is operated to the up instruction state, the common terminal and the terminal Sup are connected, a LO level signal is sent to the sunroof tilting switch signal input circuit 13, and the input terminal of the sunroof tilting switch signal input circuit 14 is opened. Conversely, when the sunroof tilting switch ST is operated to the close instruction state, the common terminal and terminal S
dwn is connected, a signal of LO level is sent to the sunroof tilting switch signal input circuit 14, and the input terminal of the sunroof tilting switch signal input circuit 13 is opened. Also, when the sunroof tilting switch ST is operated to the neutral state, the sunroof tilting switch signal input circuit 13.
14, their input terminals are open.

A disk-shaped rotary disk 6 is attached to the rotating shaft of the motor M for detecting its rotational position. A notch for position detection is made on the outer periphery of the rotary disk 6. Two limit switches LSI and LS2 are arranged around this rotary disk 6. This limit switch LS
I and LS2 are open when their contacts are located in the notches of the rotary disk 6, and are closed otherwise. When the motor M is rotated forward from the state where the roof panel 22 closes the opening 21, the roof panel 22 slides parallel to the opening 21, and the opening 21 is opened. When the roof panel 22 is reversed from the state in which the opening 21 is closed, one end of the roof panel 22 is lifted and the roof panel 22 is tilted.
The limit switches LSI and LS2 are set to switch depending on the situation, such as when tilting up or sliding. The structure around the roof panel 22 and the motor M is disclosed in detail in Japanese Patent Laid-Open No. 141984/1984, so please refer to it.

The limit switch LSI is connected to the limit switch signal input circuit 15, and when it is closed, the voltage at the input terminal of the limit switch signal input circuit 15 is set to the ground level, and when it is opened, the input terminal of the limit switch signal input circuit 15 is opened.

The output terminal of the limit switch signal input circuit 15 is connected to the input terminal IP7 of the microcomputer MC. The circuit configuration of the limit switch signal input circuit 15 is the same as that of the sunroof opening/closing switch signal input circuit 11.

The limit switch signal input circuit 15 receives an input '4 of the microcomputer MC when the limit switch LSI is closed.
The power supply voltage VCC is supplied to the child IP6, and when the limit switch LSI is closed, the potential of the input terminal IF5 of the microcomputer MC is lowered to the ground level.

The limit switch LS2 is connected to the limit switch signal input circuit 16, and when it is closed, the voltage at the input terminal of the limit switch signal input circuit 16 is set to the ground level, and when it is opened, the input terminal of the limit switch signal input circuit 16 is opened.

The output terminal of the limit switch signal input circuit 16 is connected to the input terminal IP7 of the microcomputer MC. The circuit configuration of the limit switch signal input circuit 16 is the same as that of the sunroof opening/closing switch signal input circuit 11.

The limit switch signal input circuit 16 supplies the power supply voltage ■CC to the input terminal rP7 of the microcomputer MC when the limit switch LS2 is closed, and the limit switch L
When S2 is closed, the input terminal IP of the microcomputer MC
Drop the potential of 7 to ground level.

Buzzer output circuit 3 includes resistors R11-Rl3. It is composed of a transistor Qll and a diode D1, and its input terminal is the output terminal OP of the microcomputer MC.
connected to l. Further, its output is connected to a buzzer BZ. Microcomputer MC output terminal OPI
When the output voltage of the microcomputer MC is at LO level, no voltage is generated across the buzzer BZ, and when the output voltage of the output terminal OP1 of the microcomputer MC is Hi level, the buzzer BZ
Voltage is applied across both ends.

The motor drive circuit 4 includes a circuit that drives the relay RLI using resistors R14 to R16, a transistor Q12, and a diode D2, resistors R17 to R19, and a transistor Q1.
3 and a diode D3 to drive the relay RL2. The input terminals of this motor drive circuit 4 are the output terminals OP2 and OF of the microcomputer MC.
2 are connected. When the output voltage of the output terminal OP2 of the microcomputer MC is 1.0 level, the relay RLI is de-energized, and when the output voltage of the output terminal OP2 of the microcomputer MC is Hi level, the relay RLI is energized. Also, microcomputer M
When the output voltage of output terminal OP3 of C is LO level,
Relay RL2 becomes de-energized, and microcomputer M
When the output voltage of output terminal OP3 of C is Hi level,
Relays R1,2 are energized. Here, relay RLI,
The relationship between the rotations of RL 2 and motor M is shown in the table below.

The current detection circuit 5 includes a resistor RO, an operational amplifier OI), and an analog-digital converter A/D.

Resistor RO is relay RLI, RL2 of motor drive circuit 4
It is arranged between the ground side terminal of the motor M and the ground terminal, and generates a voltage across the motor M depending on the amount of current flowing through the motor M. Both ends of the resistor RO are connected to two input terminals of the operational amplifier OP, and the voltage generated across the resistor RO is amplified. An output of the operational amplifier OP is connected to an input terminal of an analog-to-digital converter A/D, and a plurality of digital output terminals of the analog-to-digital converter A/D are connected to an input terminal of a microcomputer MC. In this embodiment, 8 bits is selected as the resolution of the analog-to-digital converter A/D, and eight output terminals of the analog-to-digital converter A/D are connected to input terminals IP8 to IP15 of the microcomputer MC. Note that the resolution of the analog-to-digital converter A/D is set by the ability of the microcomputer MC and the accuracy of the position of the opening/closing member, so 8bi
It doesn't have to be t. The current flowing through the motor M is amplified by the current detection circuit 5, converted into digital data, and can be recognized within the micro combi-arc MC.

The microcomputer MC that plays a central role in control is a one-chip microcomputer in this embodiment.

Inside the microcomputer MC, there are ROM and RAM.
memory, input/output interface and CPU (
central processing unit). The CPU executes programs stored in the ROM. Programs according to the flowcharts shown in FIGS. 4 to 9 are stored in the ROM.

Output terminal OP4 of this microcomputer MC is Hi
When outputting level, ignition switch I
When C changes from open to closed, relay MS is energized from open to closed, and voltage from battery E is applied to power supply circuit l. At this time, a voltage CC is applied from the power supply circuit to the power supply terminal I'E of the microcomputer MC, and the program is executed inside the microcomputer MC according to the main routine flowchart shown in FIG.

When the program starts, initial settings are first performed. Here, input/output settings for each input/output terminal and memory initialization are performed.

Here, the variable M is set to 0”° (step 40)
.

Next, steps 50, 60, 70, etc. are performed depending on the value of the variable M.
80.90 subroutines are executed.

The value of variable M is initially set to "0" in step 40, but is changed to an integer value from 0 to 4 within each subroutine, as will be described later. step 50,
60.70 80 90 are "standby mode" and "
"Slide open mode", "Slide close mode", "Tilt up mode", "Tilt down mode"
This is a subroutine to do this.

- Standby mode (, M=O); In standby mode, processing for transitioning to another mode is performed in response to switch operation. In Figure 5,
Input terminal IP2. IP3. Read the IP4IP5 status,
Recognize the states of the sunroof opening/closing switch SS and sunroof tilting switch ST. Here, if the sunroof opening/closing switch SS is in the open instruction state, the input terminal IP
Since the voltage No. 2 becomes Hi level, the variable M is set to "1". When the sunroof opening/closing switch SS is in the close instruction state, the voltage at the input terminal rP3 becomes Hi level, so the variable M is set to "2°".If the sunroof tilting switch ST is in the up instruction state, the input terminal ?'
Since the voltage of IP4 becomes Hi level, the variable M is set to “°3”.
′° is set. In addition, the sunroof (drive switch S
When T is in the down instruction state, the voltage at input terminal IP5 becomes f(i level), so "4°" is set to variable M. As a result, the value of variable M is updated, and the If you give an open instruction, it will be in "slide open mode"
(Step 60) is executed and if a close instruction is given, “
"Slide close mode" (step 70) is executed, if an up instruction is issued, a "tilt up mode" (step 80) is executed, and if a down instruction is issued, a "tilt down mode" (step 90) is executed. become. In addition, input terminal IP2. IP3. IP4. [P
(If two or more of 5 are at Hi level at the same time, double press the operation switch or the operation switch is abnormal)
Then, the program returns to the main routine (step 51).

・Slide open mode (M=1); value of variable M is 1
''', the subroutine shown in FIG. The output terminal OP3 is set to Lo level, and the relay RLI of the motor drive circuit 4 is energized.
Relay RL2 is de-energized and motor M is reversed (step 61).

Next, detect motor overload. Input terminal IP8
~ Estimate the current IM flowing through the motor M from the signal input to IP15, and if IM is greater than a predetermined value, it is determined that the motor M is overloaded, and step 66
Execute the following motor stop routine (step 6)
2).

If IM is not equal to or greater than a predetermined value, then a determination is made as to whether the operation switch has been pressed twice. Here, input terminal IP
If two or more of 2 to IP5 are at Hi level, it is determined that the two operation switches of the sunroof open/close switch SS and the sunroof (M movement switch ST) are double pressed or the operation switch is malfunctioning, and the steps from step 66 onwards are performed. A motor stop routine is executed (step 63).

If there is no double press of the operation switch, then abnormality determination of the current detection circuit 5 is performed. Here, if the current value IM flowing through the motor M is less than the predetermined value I0, and the input terminal IP2 is at the Lo level, that is, the sunroof opening/closing switch SS is not in the open state, the routine for stopping the motor from step 66 onward is executed. Execute (step 64
．． 65).

In this embodiment, - degree sunroof opening/closing switch SS
If the sunroof is opened, the motor is controlled so that it continues to rotate until the slide is completed, even if the sunroof opening/closing switch SS is released to release the open state. Here, failure of the current detection circuit 5, resistance R
O short circuit failure.

If the wire on the motor M side of the resistor RO is shorted to the ground, or the signal line between the resistor RO and the operator 77102 is disconnected, the microcomputer MC will interrupt the motor current.
If it can no longer be recognized as anything other than Ampere,
Stop the rotation of motor M. Therefore, it is safe even if the motor overload cannot be detected in step 62 when the motor current cannot be detected normally due to the above-mentioned failure.

In step 66, the motor M is stopped. Here, both output terminals OP2 and OP3 are set to Hi level or Lo level, and motor M is stopped.

After this, the variable M is set to "'0" in order to change the mode to "standby mode".

In order to ensure safety, the main routine is not returned until all the operation switches are in a neutral state.

Slide close mode (M=2) i If the value of variable M is "2", the subroutine shown in FIG. 7 is executed. First, the motor 1 is driven to slide the roof panel 22 in the closing direction. To close the roof panel 22, the output terminal OP2 is set to Lo level, the output terminal ○P3 is set to Hi level, and the motor M is reversed. (Step 71). The other processes have the same structure as the above-mentioned "slide open mode" except that the switch reading in step 75 is different, so the other explanations will be omitted.

In the failure judgment of the detection circuit, the current value IM is smaller than the predetermined value IO, and the input terminal IP3 is too high.

level, that is, when the sunroof opening/closing switch SS is not in the close instruction state, the motor is stopped, and otherwise, the process returns to the main routine (step 74).
75). Similar to the "slide open mode" mentioned above,
When the current flowing through the motor drops below a predetermined value when the motor is running, the motor is stopped to provide a failsafe.

・Tilt amplifier mode (M=3); When the value of the variable M is "3°", the subroutine shown in FIG. To raise the roof panel 22, set the output terminal OP2 to the Hi level, set the output terminal OP3 to the Lo level, and rotate the motor M forward (step 81).Other processes are performed in step 8.
Since it has the same structure as the above-mentioned "Squig 1 open mode" except that the reading of the switch No. 5 is different, the other explanations will be omitted.

In the failure judgment of the detection circuit, the current value IM is smaller than a predetermined value and the input terminal IP4 is too high.

When the level, that is, the sunroof 1 movement switch ST is not in the up instruction state, the motor is stopped, and otherwise, the process returns to the main routine (step 84.
85). Similar to the aforementioned "slide oven mote",
When the current flowing through the motor drops below a predetermined value when the motor is running, the motor is stopped to provide a failsafe.

- Chill] - Down mode (M=4); If the value of variable M is "4'", the subroutine shown in FIG. 9 is executed. First, the motor M is driven and rotated in a direction to lower the roof panel 22. To lower the roof panel 22, the output terminal OP2 is set to the Lo level, the output terminal OP3 is set to the Hi level, and the motor M is reversed. (Step 91). Other processing is step 9
Since it has the same structure as the aforementioned "Sly I Open Mort" with the only difference in the reading of the switch No. 5, other explanations will be omitted.

In the detection circuit failure determination, the current value IM is smaller than the predetermined value 1, and the input terminal IP5 is too high.

level, that is, when the sunroof 1 movement switch ST is not in the close instruction state, the motor is stopped. Otherwise, the process returns to the main routine (step 94).
．． 95). Similar to the above-mentioned "slide open mode", when the current flowing through the motor drops below a predetermined value while the motor is being driven, the motor is stopped to provide a failsafe.

As described above, in this embodiment, when the current flowing through the motor M becomes less than a predetermined value while the roof panel 22 is moving, the drive of the motor is stopped.

As a result, the current detection circuit of the motor becomes abnormal, and the movement of the roof panel 22 can be stopped even if no overload detection is performed.

Furthermore, in this embodiment, when the operation switch continues to be operated (1), for example, when the sunroof opening/closing switch SS is kept being pressed so as to be in the open state, the drive of the motor is not stopped.

Therefore, even if the roof panel 22 is left open and stopped due to abnormality determination, if the operation switch is kept pressed, the motor will rotate and the roof panel 22 can be closed, which is useful in case of rain or to prevent theft. Stop this operation and
In order to make it impossible to move the roof panel 22 unless the operation switch is pressed even in normal times, for example, the inside of FIG. 6 may be changed as shown in FIG. 10.

In this embodiment, control of a sunroof has been described, but the present invention can also be applied to other opening/closing members, for example, an electric window opening/closing device as shown in FIG.

In FIG. 3, a window glass 32 is provided in a window frame 31 of a door panel 30 of a vehicle so as to be openable and closable. window glass 3
2 is provided with a lifting device 35 that is fixed to the door panel 30 and moves the window glass 32 up and down in accordance with the rotation of a motor 33. Further, a door panel 30 is provided with a limit switch 34 for detecting the position of the window glass 32.

To perform such window opening/closing control, a device similar to the aforementioned sunroof control device may be used.

Specifically, in FIG. 1, the sunroof opening/closing switch SS is used as a switch for opening/closing the window, and the sunroof tilting switch ST is deleted, steps 80 and 81 are deleted in FIG. 4, and steps 80 and 81 are deleted in FIG. 5. step 54,
55, 58 and 5 should be deleted. According to this, once the window opening/closing switch is pushed in the opening direction, the window is driven in the opening direction, and when it is pushed in the closing direction, the window is driven in the closing direction.

If something gets caught between the window and the window frame, or if the motor breaks down and the motor is overloaded,
Motor drive is stopped. Further, if the motor current value recognized by the control circuit is abnormally small, the drive of the motor is similarly stopped. Furthermore, even if the motor current value recognized by the control circuit is small and the drive of the motor is stopped, the motor will continue to be driven if the switch is held down.

[Effects of the Invention] As explained below, according to the present invention, when the current measuring means of the motor is out of order, the motor is not driven. Even if the load cannot be detected, objects will not get caught in the opening/closing member, resulting in a dangerous situation.

Furthermore, it has an operation switch, and drives the motor in response to the ON operation of the operation switch, and then measures the motor current when the operation switch is turned OFF, and stops the motor when the measured value is low. Then, the motor can be driven by continuing to press the operation switch, so the opening/closing member can be closed even after the current measuring means has failed and the motor has stopped. This prevents rain from pouring in or valuables inside the vehicle being stolen.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a sunroof control device according to an embodiment of the present invention. FIG. 2 is an external view of the control device shown in FIG. 1. FIG. 3 is an external view of a window control device according to another embodiment. 4 to 9 are flowcharts 1- of the microcomputer MC of the control device shown in FIG. FIG. 10 is a flowchart of an embodiment in which the flowchart of FIG. 6 is partially modified. ■...Power supply circuit, 2...IG switch signal input circuit, 3...Buzzer output circuit, 4...Motor drive circuit (motor drive means), 5...
...Current detection circuit (current measurement means), 6... Turntable, 11.12... Sunroof opening/closing switch signal input circuit, 13.14... Sunroof tilting switch signal input circuit, 15.16... Limit switch signal input circuit, 20
... Roof, 21... Opening, 22... Roof panel (opening/closing member), 30... Door panel, 31... Window frame, 32... Window glass (opening/closing member), 33... - Motor (motor), 34...Limit switch, 35...Elevating device, MC...Microcomputer, Steps 62, 66.72, 76.82, 86°92.
96...Overload protection means, steps 64~66.74~76.84~86°94~
96,100...Motor drive stop means, OR...Or gate, Qi Q2. Q3. Ql 1. Qi2. Q
i3...Transistor, RO~R8R11~R19...Resistor, DI D2.
D3...Diode, ZD...Zener diode, IPI~IP15...Input terminal, OP1~OP4...Output terminal, E...H-INTELI IC...Ignition switch, MS RLI, RL2...・ ・Relay 0P --・Operational amplifier, A/D...Analog-digital converter, VCC・
...Power supply voltage, SS...Sunroof opening/closing switch (operation switch), ST...Sunroof tilting switch (operation switch), 5OPN, 5CLS, SUP, SD匈N...Terminal, LSI LS2...-Limit switch , M... Motor (motor), BZ... Buzzer

Claims (2)

[Claims] (1) An opening/closing member disposed on the vehicle, a motor for driving the opening/closing member, a current measuring means for measuring the current flowing through the motor, and stopping the driving of the motor when the measured current of the current measuring means is large. A control device for an opening/closing member on a vehicle, comprising an overload protection means, further comprising: a motor drive stopper that stops driving the motor when the current value measured by the current measuring means is smaller than the current value flowing through the motor when the motor rotates; A control device for an opening/closing member on a vehicle, comprising means. (2) An opening/closing member disposed on the vehicle, a motor that drives the opening/closing member, a current measuring means for measuring the current flowing through the motor, and an error that stops driving the motor when the current measured by the current measuring means is large. A control device for an opening/closing member on a vehicle, comprising a load protection means, an operation switch, and a motor drive means for driving the motor in response to an on-operation of the operation switch, further comprising: control of an opening/closing member on the vehicle, comprising a motor drive stop means for stopping the drive of the motor when the current value measured by the current measuring means is smaller than the value of the current flowing through the motor during rotation of the motor when the motor is turned off; Device.