JPH08158739A - Power window device for car - Google Patents

Abstract

PURPOSE: To detect the state of the insertion of a foreign matter into a window accurately even when load applied to a motor is varied by the change in the traveling speed. CONSTITUTION: Car speed detected by a car speed sensor 16 is transmitted to a correction value generator 17, a correction value is formed, and a threshold is corrected by a detected reference-value compensator 19 on the basis of the correction value. The corrected threshold is transmitted to a comparator 13, and compared with load applied to a motor 3 detected by a load fluctuation detector 9 in the comparator 13. When motor load is made larger than the corrected threshold, the insertion of an article, etc., into a window 1 is decided, a window forced opening device 8 is operated through a timer 14, the motor 3 is turned for a fixed time in the direction that the window 1 is opened, and the window 1 is opened.

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 weak people can easily open and close windows. However, it is possible to open and close the window by simply pressing the open / close switch, so if you accidentally touch the open / close switch and press it, the window will be closed. Sometimes.

When an object or the like is caught in the window for a vehicle that is being closed, the conventional device detects the load applied to the motor that drives the window for the vehicle to open and close, and this load is predetermined. It is determined that an object has been caught in the window by detecting that the threshold value has been exceeded, and as a result, the motor closing the vehicle window is immediately stopped, or the vehicle window is closed. Is open for a certain distance.

[0005]

As described above, in the conventional device, the load applied to the motor that opens and closes the window is compared with a predetermined threshold value, and when the load exceeds the threshold value, It detects that something is caught in the window,
When the vehicle is running at high speed, wind pressure is applied to the window, which changes the sliding resistance when opening and closing the window.
The load applied to the motor changes depending on the speed of the vehicle, and when the threshold value is constant, there is a problem that it is not possible to accurately detect that an object or the like is caught in the window.

The present invention has been made in view of the above,
An object of the present invention is to provide a power window device for a vehicle, which can accurately detect a foreign object trapped state in a window even if the traveling speed of the vehicle changes and the load applied to the motor changes accordingly. Especially.

[0007]

In order 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 applied to the motor. Entrapment determining means for comparing the load detected by the load detecting means with a predetermined threshold value and determining whether or not a foreign object is trapped in the vehicle window based on the comparison result, and detecting the vehicle speed. Speed detection means,
The gist of the present invention is to have a correction means for correcting the threshold value based on the speed of the vehicle detected by the speed detection means.

[0008]

In the vehicle power window device of the present invention, the threshold value is corrected based on the speed of the vehicle, the load applied to the motor is compared with the corrected threshold value, and the window is displayed based on the comparison result. It is determined whether or not a foreign object has been caught.

[0009]

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

FIG. 1 is a block diagram showing the structure of a vehicle power window device according to an embodiment of the present invention. The vehicle power window device shown in FIG. 1 has a window opening / closing mechanism 2 for opening / closing the window 1, and the window opening / closing mechanism 2 is driven by a motor 3. One terminal of the motor 3 is connected to the window closing manual control switch 6 via the load change detector 9, the break contact side of the switching contact of the window closing drive relay 4, and the break contact of the window forced opening device 8. Also motor 3
The other terminal is connected to the window opening manual control switch 7 through the window forced opening device 8 on the break contact side of the switching contact of the window opening drive relay 5. The make contact sides of both switching contacts of the window closing drive relay 4 and the window opening drive relay 5 are connected to the battery 70.

The load fluctuation detector 9 detects a load applied to the motor 3, supplies the detected load to one input of the comparator 13, and a detection reference value corrector 19 supplied to the other input. It is designed to be compared with the corrected threshold value of. When the load applied to the motor 3 detected by the load fluctuation detector 9 is larger than the correction threshold value from the detection reference value corrector 19, it is determined that foreign matter is caught in the motor 3, and the timer 14 Drive the timer 14
Output signal for opening the break contact of the window forced opening device 8 and closing the make contact, thereby controlling the motor 3 to open for a predetermined distance.

That is, in the window forced opening device 8,
When the break contact of the window forced opening device 8 is opened by the output signal of the timer 14, the window closing drive relay 4 is turned off, and the switching contact of the window closing drive relay 4 is connected to the break contact side. As a result, one terminal of the motor 3 is connected to the ground via the load change detector 9 and the break contact side of the switching contact of the window closing drive relay 4, and the output signal of the timer 14 causes the window forcible opening device 8 to operate. When the make contact is closed, the window opening drive relay 5 is driven, and the switching contact of the window opening drive relay 5 is connected to the make contact side, whereby the other terminal of the motor 3 is connected to the window opening drive relay 5. By being connected to the battery 70 via the make contact side of the switching contact, the motor 3 rotates in the direction of opening the window 1 and thereby the window 1
Is opened by the timer 14 for a certain distance.

The detection reference value compensator 19 corrects the load fluctuation reference value 10 during normal operation by the correction value from the correction value generator 17, and the corrected reference value, that is, the corrected threshold value. It is adapted to be supplied to the comparator 13. In addition, the correction value generator 17 is the vehicle speed sensor 1
The speed signal of the vehicle detected by 6 is supplied, a correction value is generated based on this vehicle speed signal, and this correction value is supplied to the detection reference value corrector 19, whereby the correction value is corrected based on the vehicle speed. The threshold value is output from the detection reference value corrector 19.

In the vehicle power window device configured as described above, when the window opening manual control switch 7 is operated, for example, when the vehicle is not traveling, the window opening drive relay 5 is driven, whereby the window is opened. The switching contact of the open drive relay 5 is connected to the make contact side, and the motor 3
The voltage of the battery 70 is supplied to the other terminal side of the above, and one terminal of the motor 3 is connected to the ground through the load change detector 9 and the break contact side of the switching contact of the window closing drive relay 4. As a result, the motor 3 rotates so as to open the window 1 via the window opening / closing mechanism 2.

Similarly, when the window closing manual control switch 6 is operated while the vehicle is not traveling, the window closing driving relay 4 is driven, and the make of the switching contact of the window closing driving relay 4 is thereby made. Battery 70 via contacts
Is supplied to one terminal of the motor 3, and the other terminal of the motor 3 is connected to the ground via the break contact side of the switching contact of the window opening drive relay 5, so that the motor 3 operates in the window opening / closing mechanism 2 The window 1 is rotated to close it.

In this case, the load applied to the motor 3 is detected by the load fluctuation detector 9 and supplied to one input of the comparator 13. Further, in this case, the other input of the comparator 13 is supplied with the predetermined threshold value in the normal time from the detection reference value compensator 19, so that the comparator 13 loads the load from the load fluctuation detector 9 into the load. Is compared with a predetermined threshold value in the normal state from the detection reference value corrector 19. Then, as a result of the comparison in the comparator 13, when the load from the load variation detector 9 is smaller than the predetermined threshold value in the normal state from the detection reference value corrector 19, an object or the like is present in the window 1. It is determined that the window 1 is not caught, and the window 1 can be directly closed without driving the timer 14 and thus without operating the window forced opening device 8.

When an object is caught in the window 1 during the closing, the load on the motor 3 increases, and the increased load is detected by the load fluctuation detector 9.
It is supplied to one input of the comparator 13 and compared with a predetermined threshold value in the normal state. When the increased load is larger than the threshold value, the comparator 13 causes the timer 14
Is driven to operate the window forced opening device 8 through the timer 14 for a predetermined time. When the window forced opening device 8 is actuated, the break contact of the window forced opening device 8 is opened and the make contact is closed, so that the voltage is supplied to the motor 3 through the path described above, whereby the motor 3 causes the window opening / closing mechanism 2 to operate. The window 1 is rotated so as to be opened via, and the window 1 operates in a direction of opening for a fixed time determined by the timer 14, so that an object caught in the window 1 can be immediately removed.

Further, when the vehicle is running, the window 1
Since the wind pressure acts on the motor 1, the sliding resistance when the window 1 is opened and closed is increased.
Since the load applied to is increased compared to the normal time, in order to compensate for this increase, the threshold value should be increased.
The vehicle speed sensor 16 detects the vehicle speed and supplies the detected vehicle speed to the correction value generator 17 to generate a correction value. Then, this correction value is supplied to the detection reference value corrector 19, whereby the detection reference value corrector 19 corrects the threshold value from the load fluctuation reference value 10 during normal operation, and the correction value is corrected according to the vehicle speed. The threshold value is supplied from the detection reference value corrector 19 to the comparator 13.

When the window closing manual control switch 6 is operated while the vehicle is traveling, the motor 3 operates to close the window 1 via the window opening / closing mechanism 2 as described above. Since the sliding resistance of the window 1 is increased by the wind pressure generated by the running of the vehicle, the load applied to the motor 3 is increased. The load thus increased is detected by the load fluctuation detector 9 and supplied to the comparator 13. Comparator 13
Is a reference value compensator 19 for detecting the increased motor load.
From the threshold value corrected according to the vehicle speed. Therefore, even if the load applied to the motor 3 increases and changes due to the traveling of the vehicle, it is accurately determined that the object is not caught in the window 1 by the corrected threshold value, and the window 1 is closed. The operation can be performed accurately. Therefore, for example, unlike the conventional case, an increase change in the load applied to the motor 3 due to high-speed running of the vehicle is not erroneously determined to be an object caught in the window.

Further, in this case, when an object or the like is caught in the window 1, the motor load is further increased because the motor load is increased due to the pinching in addition to the increase in the motor load due to the traveling of the vehicle. , Increases above the threshold value corrected by the vehicle speed. Therefore, the comparator 13 appropriately detects the pinched state of an object or the like by comparing the two, and thereby operates the window forced opening device 8 for a predetermined time via the timer 14, so that the motor 3 is operated by the window forced opening device 8. As described above, the window 1 can be rotated in a direction in which it is opened for a certain period of time to release the pinched state of an object or the like.

[0021]

As described above, according to the present invention,
The threshold value is corrected based on the speed of the vehicle, the load applied to the motor is compared with the corrected threshold value, and it is determined whether or not a foreign object is trapped in the window based on the comparison result. The window can be opened and closed properly regardless of the traveling speed of the vehicle, and the state of a foreign object being caught in the window can be accurately detected.

[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.

[Explanation of symbols]

 1 window 2 window opening / closing mechanism 3 motor 6 window closing manual control switch 7 window opening manual control switch 8 window forced opening device 9 load variation detector 13 comparator 14 timer 16 vehicle speed sensor 17 correction value generator 19 detection reference value corrector

Claims (1)

[Claims] 1. A motor for opening and closing a vehicle window, a load detecting means for detecting a load applied to the motor, the load detected by the load detecting means is compared with a predetermined threshold value, and the comparison is made. An entrapment judging means for judging whether or not a foreign object is entrapped in the vehicle window based on the result, a speed detecting means for detecting the speed of the vehicle, and the threshold based on the speed of the vehicle detected by the speed detecting means. A power window device for a vehicle, comprising: a correction unit that corrects a value.