JPH0886145A - Vehicle power window device - Google Patents

Abstract

PURPOSE: To appropriately ensure the detection of a defect such as an increase in slide resistance of a window due to aging effect of components of a power window device. CONSTITUTION: A drive current for a power window motor 1 is detected by a current detecting part 11 when the power window motor is detected by manipulating a power window up switch 3 in order to close a vehicle window, through a switch input part 7 and a motor drive part 9. Thus detected drive current is compared with a catching detection reference current from a catching detection reference current level memory part 15 and a system malfunction predicting reference current from a system malfunction predicting level memory part 19, by means of a level comparing part 13. Further, if the drive current is larger than the system malfunction predicting reference lever but smaller than the catching detection reference current level, it is determined as a defect in slide resistance or the like, due to aging effect of a component part of the power window.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle power window device for opening and closing vehicle windows using a motor.

[0002]

2. Description of the Related Art Various types of vehicle power window devices for opening and closing windows of vehicles such as automobiles using a motor have been developed and put into practical use. Such vehicle power window devices are used in vehicles. Since it is possible to open and close the vehicle window very simply by simply pressing the opening / closing switch provided on the inner side portion of the vehicle window, it is possible to improve the traveling safety of the vehicle.

Further, as described above, the window can be opened and closed by simply pressing the open / close switch, and it is not necessary to rotate a relatively heavy handle lever as in the conventional case. Even a weak person can easily open and close the window, but since the window can be opened and closed by simply pressing the open / close switch, the operation of accidentally touching and pressing the open / close switch to close the window When you close it, things may get caught in the window.

As a conventional vehicle power window device for detecting that something or the like is caught in the window for a vehicle that is being closed in this manner, for example, for an automobile disclosed in Japanese Utility Model Publication No. 5-12464. There is an automatic lifting device for window glass.

This conventional device detects the position and the opening / closing speed of the window glass during opening and closing by extracting and counting the pulsating current that drives the motor for opening and closing the vehicle window as a pulse signal and counting. When the speed of the motor is reduced outside the full closed position range, it is determined that an object is caught in the window glass, the motor is rotated in reverse, and the window glass is lowered to be caught in the window glass. The object can be taken out.

[0006]

In the above-mentioned conventional apparatus, it is possible to detect that an object is caught in a window glass. However, for example, the sliding resistance of the window due to the change with time of the power window parts is It is impossible to distinguish between the case where the motor is loaded more than usual due to the increase and the case where the object is caught in the window and the motor is heavily loaded. There is a problem that a large load on the motor due to an increase in resistance is erroneously determined as an object being sandwiched between vehicle windows, and thus the window cannot be closed.

The present invention has been made in view of the above,
It is an object of the invention to provide a vehicle power window device capable of accurately detecting a defect such as an increase in sliding resistance of a window due to a change with time of a power window component.

[0008]

To achieve the above object, a vehicle power window device of the present invention comprises a motor for opening and closing a vehicle window, and load detecting means for detecting a load on the motor. The load detected by the load detecting means is compared with the comparing means for comparing the load detected by the load detecting means with the first predetermined reference load and the second predetermined reference load, respectively. When the load is larger than the first predetermined reference load and smaller than the second predetermined reference load, a determination means for determining that the power window component is due to a change with time is provided.

Further, in the vehicle power window device of the present invention, when the load detected by the load detecting means during the closing operation of the vehicle window by the motor is larger than the second predetermined reference load, the vehicle window is opened. Control means for controlling the operation of the motor so as to stop the closing operation of the motor, and the stop control of the operation of the motor by the control means is invalidated when a change with time is recognized by the determination means. It is a gist to have an invalid means to do.

Furthermore, the vehicle power window device of the present invention has a notifying means for notifying the time-dependent change of the power window parts when the time-dependent change is recognized by the judging means.

[0011]

In the vehicle power window device of the present invention, the load applied to the motor for opening and closing the vehicle window is detected,
The detected load is respectively compared with a first predetermined reference load and a second predetermined reference load, and as a result of this comparison, the detected load is larger than the first predetermined reference load,
When the load is smaller than the second predetermined reference load, it is determined that the power window component is changed with time.

Further, in the vehicle power window device of the present invention, when the load detected during the closing operation of the vehicle window by the motor is larger than the second predetermined reference load, the operation of the motor is stopped and the vehicle The closing operation of the window is stopped, and when the change over time is recognized, the stop control of the operation of the motor is invalidated.

Further, in the vehicle power window device of the present invention, when a change with time is recognized, the change of the power window component with time is notified.

[0014]

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

FIG. 1 is a block diagram showing the configuration of a vehicle power window device according to an embodiment of the present invention.
The vehicle power window device shown in FIG. 1 includes a power window motor 1 for opening and closing a vehicle window (not shown), a power window up switch 3 for generating a closing command signal for closing the vehicle window, and It has a power window down switch 5 for generating an opening command signal for opening a vehicle window.

The closing command signal from the power window up switch 3 and the opening command signal from the power window down switch 5 are supplied to a switch input section 7, which switches the closing command signal and the opening command. A window closing signal and a window opening signal are supplied to the motor drive unit 9 based on the signals.

The motor driving unit 9 outputs the window closing driving signal and the window opening driving signal for closing and opening the vehicle window according to the window closing signal and the window opening signal from the switch input unit 7 to the power. It is supplied to the window motor 1, and thereby the power window motor 1 is rotationally driven to close or open the vehicle window. Specifically, the motor drive unit 9
Is supplied with a window closing signal from the switch input section 7,
For example, a voltage of +12 V is applied to the output line 9a of the motor drive unit 9 and a voltage of 0 V is applied to the output line 9b, thereby rotating the power window motor 1 in the first direction and When the window is closed and a window opening signal is supplied from the switch input section 7, a voltage of, for example, 0 volt is applied to the output line 9a and, for example, +1 is applied to the output line 9b.
A voltage of 2 volts is applied, whereby the power window motor 1 is rotated in the direction opposite to the first direction to open the vehicle window.

One output line 9a of the motor drive unit 9
Is connected to one terminal of the power window motor 1 after passing through the current detector 11, and the other output line 9b is directly connected to the other terminal of the power window motor 1.

By passing one output line 9a of the motor drive unit 9 through the current detection unit 11, the drive current of the power window motor 1 flowing through the output line 9a is changed to the current detection unit 11.
And the detected motor drive current is supplied to one input of the level comparison unit 13
Pinch level storage unit 1 supplied to the other input of
Predetermined entrapment detection reference current from 5 and level comparison unit 1
Compared in 3.

The entrapment detection reference current from the entrapment level storage unit 15 is used to detect whether or not something has been entrapped in the vehicle window when the vehicle window is closed. 11 is a reference current to be compared with the motor drive current from 11. Specifically, when the vehicle window is closed, when nothing is sandwiched between the vehicle windows, the load of the power window motor 1 is constant, so that the current flowing through the power window motor 1 is also a constant value, for example, Although it is about 5 amps, if something is caught in the closed vehicle window, the load on the power window motor 1 becomes large and it becomes overloaded. The flowing current increases, for example, about 20 amperes.

Therefore, the increased motor drive current is compared with the entrapment detection reference current in the level comparison unit 13, and if the motor drive current is larger than the entrapment detection reference current, the entrapment detection signal is determined to have occurred. Is output and the entrapment detection signal is determined by the determination unit 17
Supply to.

That is, the entrapment level storage section 15
The entrapment detection reference current is set to, for example, 15 amps, and the entrapment detection reference current is set to the level comparison unit 1.
In the case of comparing with the motor drive current from the current detection unit 11 in 3, when the motor drive current when the vehicle window is smoothly closed without anything being sandwiched between the vehicle windows is about 5 amperes, Since the motor drive current is smaller than the entrapment detection reference current, the level comparison unit 13 does not output the entrapment detection signal, but something is caught in the vehicle window,
When the power window motor 1 is overloaded and the motor drive current increases to 20 amperes, the motor drive current is larger than the entrapment detection reference current, so the level comparison unit 13 outputs the entrapment detection signal on its output line 13a. Output to.

The level comparing unit 13 is supplied with the system failure predicting reference current from the system failure predicting level storage unit 19, and the level comparing unit 13 stores the motor drive current from the current detecting unit 11 in the level storage. Part 15
And the system failure prediction reference current from the system failure prediction level storage unit 19, respectively.

The system failure prediction reference current from the system failure prediction level storage unit 19 is used when the sliding resistance of the window increases due to the deterioration of the power window parts with time.
The motor drive current for driving the power window motor 1 becomes larger than a normal current value, for example, 5 amps, and increases to a current of, for example, 12 amps.
The current is set to detect the increased motor drive current, and is set to a current value of 10 amperes, for example.

Therefore, the level comparison unit 13 compares the motor drive current from the current detection unit 11 with the system failure prediction reference current from the system failure prediction level storage unit 19 and the pinch detection reference current from the pinch level storage unit 15, respectively. By doing so, if the motor drive current is larger than the system failure prediction reference current and smaller than the pinch detection reference current, it is possible to detect that the sliding resistance has increased due to the deterioration of the power window parts with time. As a result, the level comparison unit 13 outputs a system failure prediction signal to its output line 13b.

Output lines 13a, 13 from the level comparing section 13
The pinch detection signal and the system failure prediction signal respectively output to b are supplied to the determination unit 17.

When the entrapment detection signal is supplied from the level comparing section 13 via the output line 13a of the judging section 17, an entrapment state occurs in which something is caught in the vehicle window being closed. Then, the pinch generation signal is supplied to the motor drive unit 9 and the switch input unit 7.

When the motor drive unit 9 is supplied with the pinching occurrence signal from the judgment unit 17, the power window motor 1
Stop the operation of. Specifically, the motor drive unit 9
By applying a voltage of 0 volt to both the output lines 9a and 9b, the operation of the power window motor 1 is stopped, and further closing of the vehicle window is stopped first.

Further, when the judgment unit 17 is supplied with the system failure prediction signal from the level comparison unit 13 through the output line 13b, the sliding resistance of the window increases due to the deterioration of the power window parts with time, which causes a problem. It is judged that it has occurred,
A power window deterioration failure signal is supplied to the motor drive unit 9. Upon receiving the power window deterioration defect signal from the determination section 17, the motor drive section 9 suspends the stopping operation of the power window motor 1 in the pinched state,
This prevents the window from being closed due to an increase in sliding resistance of the window.

The operation of the vehicle power window device configured as described above will be described with reference to the flowchart shown in FIG.

First, the power window up switch 3
Is operated, a closing command signal is supplied from the power window switch 3 to the switch input section 7, a window closing signal is supplied from the switch input section 7 to the motor drive section 9, and the motor drive section is supplied. 9 applies a voltage of +12 volt to the output line 9a and a voltage of 0 volt to the output line 9b to drive the power window motor 1, thereby closing the vehicle window (steps S11, S12, S1
3).

In addition, the power window down switch 5
Is operated, the opening command signal is supplied from the power window down switch 5 to the switch input section 7, the window opening signal is supplied from the switch input section 7 to the motor drive section 9, and the motor drive section 9 A voltage of 0 volt is applied to the output line 9a and a voltage of +12 volt is applied to the output line 9b to drive the power window motor 1 to open the vehicle window (steps S11, S12, S1).
3).

The current flowing through the power window motor 1 in the above-described closing operation of the vehicle window is the motor drive unit 9.
The output line 9a of 1 passes through the current detection unit 11 to be detected by the current detection unit 11, and the detected motor drive current is supplied to the level comparison unit 13 (step S14).

The level comparison unit 13 inserts the motor drive current supplied from the current detection unit 11 into the level storage unit 15.
From the entrapment detection reference current from (step S1
5) If the motor drive current is smaller than the entrapment detection reference current, the entrapment detection signal is not output to the output line 13a on the assumption that the entrapment does not occur, but in the comparison in the level comparison unit 13, the motor drive is performed. If the current is larger than the entrapment detection reference current, the level comparison unit 13 determines that entrapment has occurred, outputs an entrapment detection signal to its output line 13a, and supplies it to the determination unit 17 (step S16). When the entrapment detection signal is supplied from the level comparison unit 13, the determination unit 17 determines that entrapment has occurred (step S17) and supplies the entrapment occurrence signal to the motor drive unit 9. Motor drive unit 9
When the entrapment occurrence signal is supplied from the determination unit 17,
The operation of the power window motor 1 is immediately stopped as described above.

Further, the level comparing section 13 includes the current detecting section 1
When the motor drive current from 1 is smaller than the entrapment detection reference current and the entrapment detection signal is not output, the process proceeds from step S15 to step S18, and the current detection unit 11
The motor drive current is compared with the pinch detection reference current from the pinch level storage unit 15 and the system failure prediction reference current from the system failure prediction level storage unit 19 (step S18), and the motor drive current is the system failure prediction reference current. Is larger than the entrapment detection reference current, the system failure prediction signal is supplied to the determination unit 17 via the output line 13b (step S).
19).

When the judgment unit 17 is supplied with the system failure prediction signal from the level comparison unit 13 through the output line 13b for a certain period of time, the sliding resistance of the window and the like increase due to the deterioration of the power window parts with time. Is determined to have occurred (steps S20 and S21), and a power window deterioration defect signal is supplied to the motor drive unit 9. Motor drive unit 9
When the power window deterioration failure signal is supplied from the determination unit 17, the stop operation of the power window motor 1 when the entrapped state occurs is stopped, and the window is closed due to an increase in sliding resistance of the window. To prevent being lost.

In the above embodiment, when the judgment unit 17 supplies the power window deterioration defect signal to the motor drive unit 9, the stop operation of the power window motor 1 when the pinching state occurs is stopped, and Although it is configured so as to prevent the window from being closed due to an increase in sliding resistance of the window or the like, instead, the motor drive unit 9 is controlled so as not to operate, thereby stopping the operation of the power window system. It may be configured to do so.

FIG. 3 is a block diagram showing the structure of a vehicle power window device according to another embodiment of the present invention. In addition to the embodiment shown in FIG. 1, the vehicle power window device shown in the figure has an alarm means 21 connected to the determination section 17, and a power window deterioration failure signal from the determination section 17 is also sent to the alarm means 21. In case of power window deterioration failure, an alarm is issued from the alarm means 21 to warn that a power window failure such as an increase in sliding resistance of windows due to deterioration of power window parts with time has occurred. The configuration and operation are the same as those of the embodiment shown in FIG. 1.

[0039]

As described above, according to the present invention,
The load on the motor for opening and closing the vehicle window is detected, and the detected load is compared with a first predetermined reference load and a second predetermined reference load, respectively, and as a result of this comparison, the detected load is detected. Is larger than the first predetermined reference load and smaller than the second predetermined reference load, it is determined that the power window component is defective due to deterioration over time. It is possible to accurately detect a defect such as an increase in the sliding resistance of, and to distinguish between the normal operation and the pinching operation. In addition, when a problem such as an increase in sliding resistance of a window due to deterioration of power window parts with time is detected, an alarm is generated to prevent the power window system from malfunctioning due to a further increase in sliding resistance. Can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle power window device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the vehicle power window device shown in FIG.

FIG. 3 is a block diagram showing a configuration of a vehicle power window device according to another embodiment of the present invention.

[Explanation of symbols]

 1 Power window motor 3 Power window up switch 5 Power window down switch 7 Switch input section 9 Motor drive section 11 Current detection section 13 Level comparison section 15 Entrapment level storage section 17 Judgment section 19 System failure prediction level storage section 21 Alarm means

Claims (3)

[Claims] 1. A motor for opening and closing a vehicle window, a load detecting means for detecting a load applied to the motor, and a load detected by the load detecting means for a first predetermined reference load and a second predetermined load. Comparing means for respectively comparing with the reference load, and as a result of comparison by the comparing means, the load detected by the load detecting means is larger than the first predetermined reference load,
A power window device for a vehicle, comprising: a determination unit that determines that the load is smaller than a second predetermined reference load due to a change with time of the power window component. 2. When the load detected by the load detection means during the closing operation of the vehicle window by the motor is larger than the second predetermined reference load, the motor is used to stop the closing operation of the vehicle window. The control means for controlling the operation of the motor to stop, and the invalidation means for invalidating the stop control of the operation of the motor by the control means when a change with time is recognized by the determination means. The power window device for a vehicle according to claim 1. 3. The power window device for a vehicle according to claim 1, further comprising an informing unit for informing an aging change of the power window component when the deciding unit recognizes a aging change.