JPH116361A - Power window pinch prevention device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent a foreign object from being pinched without damaging the foreign object by detecting the foreign object in a non-contact manner with a window glass, and to enhance a crime prevention function against the foreign object. A motor (33) moves up and down a window glass (35) in a window frame of a vehicle, and a transmission light branching device (15) provided on the window frame transmits light from an optical transmission unit (11) and is provided on the window frame. The received optical branching device 19 outputs the light input from the transmitting optical branching device 15 to the optical receiving unit 25. The up output stop determination means 37 determines the presence or absence of a foreign substance in the window frame based on the presence or absence of an optical signal to be received by the optical receiving unit during the raising of the window glass, and when there is a foreign substance in the window frame, Stop raising the window glass.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power window device for opening and closing a window glass of a vehicle by a drive source such as a motor, and more particularly to detecting a foreign object in a frame of the power window without contacting the window glass or the frame. The present invention relates to a power window anti-jamming device that performs an anti-jamming operation.

[0002]

2. Description of the Related Art A motor vehicle is equipped with a power window device for automatically opening and closing a window glass. In this power window device, a foreign object such as a hand or a head is often sandwiched between the window glass and the sash. In this case, a vehicle is equipped with a power window anti-jamming device that detects the jamming of a foreign object, stops the opening / closing operation of the window glass, and performs an anti-jamming operation to prevent an accident from occurring.

[0003] This power window anti-jamming device,
For example, as shown in the flowchart of FIG. 6, when the window glass comes into contact with the foreign matter in the window frame (step S10).
1), abnormal torque is applied to the power window motor (step S103). Then, the microcomputer detects the abnormal torque (step S105),
The motor is controlled (step S107) to stop or lower the window glass (step S107).
109).

That is, by detecting an abnormal torque of the motor, it is detected that a foreign substance has been caught in the window glass, and a pinching prevention operation for stopping or down-operation of the window glass is performed to prevent the pinching.

[0005]

However, since the power window pinching prevention device operates after the foreign matter comes into contact with the window glass, if the foreign matter is a part of the human body, the person is distressed. was there. In addition, it was not possible to determine whether the foreign object was from the outside of the vehicle or from the inside of the vehicle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power window anti-jamming device which detects a foreign object in a non-contact manner with a window glass to prevent the foreign object from being pinched without damaging the foreign object and has a security function for the foreign object.

[0007]

The present invention employs the following means in order to solve the above-mentioned problems. The invention of claim 1 is
A drive source for up / down operation of a window glass in a window frame of a vehicle, a light transmitting unit provided on the window frame to transmit light, and a light transmitted from the light transmitting unit provided on the window frame. Light receiving means for receiving, and when the window glass is up by the drive source, the presence or absence of foreign matter in the window frame is determined based on the presence or absence of an optical signal to be received by the light receiving means, and the window is determined. An up output stop determining means for stopping the raising of the window glass when foreign matter is present in the frame.

According to the present invention, when the window glass is moved up and down by the driving source and the light is transmitted from the light transmitting means, the light transmitted from the light transmitting means is received by the light receiving means. Then, during the raising of the window glass, the up output stop determining means determines the presence or absence of a foreign substance in the window frame based on the presence or absence of an optical signal to be received by the optical receiving means, and determines whether there is a foreign substance in the window frame. Stops the wind-up. That is, the pinch prevention operation can be performed without the foreign matter coming into contact with the window glass and without damaging the foreign matter.

[0009] In the invention of claim 2, the optical receiving means includes:
A first light receiving device and a second light receiving device provided inside the vehicle, wherein the up output stop determining means includes an optical signal from the first light receiving device and an optical signal from the second light receiving device It is determined whether the foreign matter is from the inside of the vehicle or from outside the vehicle based on the above.If the foreign matter is from the inside of the vehicle, the window glass is stopped or the window glass is stopped, and the foreign matter is removed from the outside of the vehicle. In the case of the above item, the window glass is continuously raised.

According to the present invention, based on the optical signal from the first light receiving device and the optical signal from the second light receiving device, the up output stop determining means determines whether the foreign matter is from inside the vehicle or from outside the vehicle. If the foreign matter is from inside the vehicle, the window glass is stopped or the window glass is stopped, and if the foreign object is from outside the vehicle, the window glass is kept up. It can have a crime prevention function without damaging it.

According to the third aspect of the present invention, the up output stop judging means is configured to detect the foreign object from the vehicle when the first light receiving device detects the foreign object before the second light receiving device. When the second light receiving device detects a foreign object before the first light receiving device, it is determined that the foreign object is from outside the vehicle.

According to the present invention, when the first light receiving device detects a foreign matter before the second light receiving device, it is determined that the foreign matter is from the inside of the vehicle, and the second light receiving device detects the foreign matter. If the foreign object is detected before the first light receiving device, it can be determined that the foreign object is from outside the vehicle.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a power window anti-jamming device according to an embodiment of the present invention. FIG. 1 is a block diagram showing a configuration of an embodiment of a power window pinching prevention device according to the present invention. FIG. 2 shows a top view of the power window anti-jamming device.

The power window anti-jamming device shown in FIG. 1 is mounted on a driver's seat unit, a passenger seat unit, a left rear seat unit and a right rear seat unit of an automobile. Upon detection, foreign matter is prevented from being trapped.

In FIG. 1, a power window anti-jamming device comprises a microcomputer 10, an optical transmission unit 11,
It has a transmitting light branching device 15, a receiving light branching device 19, an optical receiving unit 25, a switch input unit 27, a driver 31, a motor 33, and a window glass 35.

The microcomputer 10 performs an operation for preventing a foreign object from being caught, and includes an operation command unit 29 and an up output stop determination unit 37. The switch input unit 27
An operation signal for opening or closing the window glass 35 is output to the operation command unit 29.

The operation command unit 29 controls the driver 31 based on an operation signal from the switch input unit 27. The driver 31 rotates the motor 33 forward or reverse according to an operation command signal from the operation command unit 29. The motor 33 causes the window glass 35 to open or close.

The light transmitting unit 11 is composed of, for example, an LED, and transmits light through the optical fiber 13 based on a transmission command signal from the microcomputer 10.
Send to 5. The transmission light branching device 15 is provided on the window frame 41 and includes a plurality of light branching elements 16 arranged at the front and upper portions of the window glass 35, respectively, so that the light lines have the same intensity. The branching ratio has been adjusted.

The transmission optical branching device 15 is an optical fiber 1
3 from the front and upper light splitters 16
The input light is transferred rightward and downward.

The receiving light branching device 19 is installed in the window frame 45, receives the light from the transmitting light branching device 15, and outputs the received light to the optical receiving unit 25 via the optical fiber 23. It is arranged to face the optical branching device 15.

The receiving light branching device 19 is composed of a plurality of light branching elements 20 arranged at the rear and lower portions of the window glass 35, respectively, and the branching ratio is adjusted so that the light lines have the same intensity. ing.

The receiving light splitting device 19 receives the light from the transmitting light splitting device 15 at the rear and lower light splitting elements 20, transfers the input light rightward and downward, and transmits the light to the optical fiber 23. I do.

As the above-described receiving light branching device 19, for example, as shown in FIG. 2, a receiving light branching device 19A is arranged inside a window frame 45 in the vehicle and a receiving light branching device 19B is arranged outside the window frame 45, and the transmitting light is divided. The light 43A and 43B from the branching device 19 are received.

A window glass 35 is provided between the window frame 41 and the window frame 45. The light receiving section 25 is provided with light receiving devices 47A and 47B including a photodiode or the like corresponding to the two receiving light branching devices 19A and 19B.

The light receiving device 47A is provided when the foreign matter in the window frame is for a passenger from the vehicle.
The presence of foreign matter is detected earlier than before. Light receiving device 47B
Detects the presence of a foreign object before the light receiving device 47A when the foreign object is an intruder's object from outside the vehicle.

The up output stop judging section 37 includes the optical receiving section 2
5 is determined, and if there is no optical signal, it is determined that the optical line between the transmitting / branching device 15 and the receiving optical branching device 19 has been blocked by the presence of foreign matter, and the operation command unit 29 and the motor 33 Control the window glass 35
Is stopped or the window glass 35 is lowered.

Next, the processing of the power window anti-jamming prevention device thus configured will be described with reference to the flowchart shown in FIG. 3 and the timing charts shown in FIGS. First, it is determined whether the window glass 35 is fully closed (step S11). Wind glass 3
If 5 is not fully closed, the detection system (power window jamming prevention device) is started (step S13).

When an up switch (not shown) of the switch input section 27 is turned on (step S15),
The operation command unit 29 controls the driver 31 based on an up operation signal from the switch input unit 27. Then, the driver 31 drives the motor 33 to rotate, and the motor 33 raises the window glass 35 (step S17).

Next, the optical transmission unit 11 transmits light to the transmission optical branching device 15 via the optical fiber 13 by a signal from the microcomputer 10. The optical signals transmitted from the upper part and the front part of the window glass 35
5 is input to the optical receiving unit 25 through the receiving optical branching device 19 at the lower part and the rear part.

Here, the light 43A from the transmission light branching device 15 to the reception light branching device 19A or the light 43B from the transmission light branching device 15 to the reception light branching device 19B.
Is blocked by the insertion of a foreign object.

The light receiving device 47A determines whether a foreign object has been detected based on the presence or absence of an optical signal from the receiving light branching device 19A (step S19). Further, the light receiving device 4
7B determines the presence or absence of foreign object detection based on the presence or absence of an optical signal from the receiving optical branching device 19B (step S2).
1).

When the light receiving device 47A does not detect foreign matter, and when the light receiving device 47B does not detect foreign matter,
Returning to the processing of step S17, the raising of the window glass 35 is continued.

Next, the up output stop judging section 37 judges whether or not the foreign matter has moved from inside the vehicle to outside the vehicle based on the optical signal from the light receiving device 47A and the optical signal from the light receiving device 47B (step S23). .

Here, it is determined whether the foreign matter is from the inside of the vehicle or from outside the vehicle. When the foreign matter is inserted into the window frame, the input light signal to the light receiving device 47A is interrupted.
This is performed according to the state of the output signal of the light receiving device 47B when the output signal of A changes from ON to OFF.

When the foreign object is from the inside of the vehicle, as shown in FIG.
_{At 1 the} state changes from ON (there is no foreign matter in the window frame) to OFF (the state where a foreign matter has been inserted in the window frame). At this time, the light receiving signal B of the light receiving device 47B remains ON. Thereafter, the light receiving signal B is ON light receiving device 47B at time t ₂
To OFF.

When the foreign matter moves from the inside of the vehicle to the outside of the vehicle, the up output stop judging section 37 sets the operation command section 2
9. Control the driver 31 and the motor 33 to stop raising the window glass 35 or lower the window glass 35 (step S25).

On the other hand, when the foreign matter is from outside the vehicle,
As shown in FIG. 5, at time t ₄ when receiving the signal A of the light receiving device 47A is turned OFF from ON, the light receiving device 47
The light receiving signal B of B has already been turned off. That is,
Receiving signal B of the light receiving device 47B is turned OFF from ON in the previous time t ₃ at time t _4.

When the foreign matter moves from the outside of the vehicle to the inside of the vehicle, the up output stop judging section 37 sets the operation command section 2
9. Control the driver 31 and the motor 33 to keep the window glass 35 up.

As described above, in the present embodiment, when a foreign object is inserted into the window frame, if the foreign object is from the inside of the vehicle, the light receiving device 47A detects the foreign object before the light receiving device 47B. Detects presence and detects foreign matter in window glass 3
Before touching the window glass 5, the up output stop judging section 37 stops raising the window glass 35 or sets the
, The pinching prevention operation can be performed without damaging the foreign matter.

When the foreign matter is from outside the vehicle, the light receiving device 47B detects the presence of the foreign matter before the light receiving device 47A, and the up output stop determining unit 37 keeps the window glass 35 up. Thus, an object from the outside of the vehicle does not enter the vehicle, and crime prevention can be performed. Furthermore, only one optical transmitter 11 is used, and
Since only one light receiving unit 25 is used, the cost can be reduced.

The present invention is not limited to the embodiment. For example, in order to prevent a malfunction of the power window pinching prevention device due to sunlight or the like, the optical transmission unit 11
Unique optical signal (eg, ON / OFF signal) for optical output
May be used.

The light from the light source may be made invisible by using infrared rays or the like. Further, as another method, a bundle fiber may be used instead of using the optical branching device.

[0043]

According to the present invention, when the window glass is moved up and down by the driving source and the light is transmitted from the light transmitting means, the light transmitted from the light transmitting means is received by the light receiving means. Then, during the raising of the window glass, the up output stop determining means determines the presence or absence of a foreign substance in the window frame based on the presence or absence of an optical signal to be received by the optical receiving means, and determines whether there is a foreign substance in the window frame. Stops the wind-up. That is, the pinch prevention operation can be performed without the foreign matter coming into contact with the window glass and without giving any pain to the foreign matter.

Further, based on the optical signal from the first light receiving device and the optical signal from the second light receiving device, the up output stop judging means judges whether the foreign matter is from inside the vehicle or from outside the vehicle. If the foreign object is from inside the vehicle, stop or lower the window glass.If the foreign object is from the outside of the vehicle, keep the window glass up. In addition, it can have a security function.

If the first light receiving device detects foreign matter before the second light receiving device, it is determined that the foreign matter is from inside the vehicle, and the second light receiving device is connected to the first light receiving device. If a foreign object is detected earlier than the vehicle, it can be determined that the foreign object is from outside the vehicle.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram showing an embodiment of a power window pinching prevention device of the present invention.

FIG. 2 is a top view of the power window pinching prevention device.

FIG. 3 is a flowchart showing an operation of the power window pinching prevention device.

FIG. 4 is a timing chart of two light receiving signals when a foreign object is an object from inside the vehicle.

FIG. 5 is a timing chart of two light receiving signals when a foreign object is from outside the vehicle.

FIG. 6 is a flowchart of an operation of the conventional power window jamming prevention device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Microcomputer 11 Optical transmission part 13,23 Optical fiber 15 Transmission optical branching device 16,20 Optical branching element 17,21 Front part 18,22 Rear part 19,19A, 19B Reception optical branching device 25 Optical receiving part 27 Switch input part 29 Operation command unit 31 Driver 33 Motor 35 Window glass 37 Up output stop determination unit 41, 45 Window frame 43A, 43B Light 47A, 47B Light receiving device

Claims (3)

[Claims] 1. A driving source 33 for up-down operation of a window glass 35 in a window frame of a vehicle, and light transmitting means 11, 1 provided in the window frame and transmitting light.
5, light receiving means 19 and 25 provided on the window frame and receiving light transmitted from the light transmitting means, and when the drive source raises the window glass, the light receiving means Up output stop determining means 37 for determining the presence or absence of foreign matter in the window frame based on the presence or absence of an optical signal to be received, and stopping the raising of the window glass when foreign matter is present in the window frame. A power window pinching prevention device, comprising: 2. The light receiving means comprises a first light receiving device 47A and a second light receiving device 47 provided inside the vehicle.
B, the up output stop determination means 37 is configured to determine whether the foreign matter is from the inside or outside of the vehicle based on the optical signal from the first light receiving device and the optical signal from the second light receiving device. And determining whether the foreign matter is from inside the vehicle, stopping or lowering the window glass if the foreign matter is from inside the vehicle, and continuing to raise the window glass if the foreign matter is from the outside of the vehicle. The device for preventing pinching of a power window according to claim 1, characterized in that: 3. The up output stop judging means judges that the foreign object is from inside the vehicle when the first light receiving device detects the foreign object before the second light receiving device. 3. The power window jam prevention device according to claim 2, wherein when the second light receiving device detects the foreign matter before the first light receiving device, the foreign matter is determined to be from outside the vehicle.