JPH0711222B2 - Power window automatic opening and closing safety device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in order to improve the ease of getting on and off a vehicle, traps foreign matter when automatically opening and closing a window in synchronization with opening and closing of a door, particularly when closing the window. And a power window automatic opening and closing safety device for opening the window.

2. Description of the Related Art An automatic opening / closing safety device that opens a window automatically when a foreign object is caught when the window is closed in an automobile is known. For example, according to the vehicle window glass control device described in Japanese Patent Publication No. 50-11647, a pressing switch is provided in line with the packing that the edge of the window glass should contact when the window glass is closed. Therefore, when this switch is pressed, it is determined that a foreign object is caught.

On the other hand, according to the method for moving up and down the windowpane disclosed in Japanese Patent Publication No. 55-1436, a timer is provided, and when the period during which the windowpane rises is longer than the time set in the timer, foreign matter is caught. To be judged.

The problem to be solved by the invention The present invention is based on the automatic opening and closing safety device as described at the beginning, and therefore the device according to the present invention is particularly suitable for vehicles with windows without frames, so-called sashless windows. It is suitable. In such an automobile, there is no place to install a push switch like the control device for a window glass for a vehicle described in Japanese Patent Publication No. 50-11647, or even if there is an appropriate place, such a switch is Installation is extremely difficult. Furthermore, this known device requires additional parts, which complicates the construction. Moreover, since this part is, so to speak, a mechanical part, if it is to be attached to an existing automobile later, it is necessary to change the mechanism of the automobile body, and it is virtually impossible to attach it to the existing automobile.

On the other hand, in the power window glass lifting method described in Japanese Examined Patent Publication No. Sho 55-1436, the judgment of trapping is made only after the time set in the timer, so this method is fundamentally for protecting passengers. Useless. This is because, for example, when a human body is caught, the human body must be kept caught during the set time, and it is not guaranteed that the human body will not be seriously damaged during that time.

Further, in the known configuration, when the window is slightly opened, opening / closing of the window in synchronization with opening / closing of the door is not considered, and there is no means for coping with pinching in that case.

An object of the present invention is to provide an automatic opening / closing safety device for a power window as described at the beginning, which can be easily configured and operates reliably, that is, can reliably prevent damage to a human body or the like due to pinching. It is possible to open and close the window in synchronization with the opening and closing of the door at any opening.
Another object of the present invention is to provide an automatic opening / closing safety device capable of preventing pinching.

Furthermore, the device according to the invention makes it possible to easily integrate it into existing vehicles equipped with power windows.

Means for Solving the Problems According to the present invention, this object is achieved as follows. That is, a window drive motor for opening and closing the window is provided, and this window drive motor is connected to a power source through a manual window operation switch and an automatic shutoff device, in which case the automatic shutoff device opens and closes the window. There is a door switch that is operated when the door is opened and closed by stopping the energization of the window drive motor when it is fully closed and when the window is stopped by an external force. This logic circuit supplies a door open signal and a door close signal with the length of the timer set time to the window drive motor when the door is opened and closed, and the window is completely closed. A memory device for detecting and storing a window closing signal is provided for storing a continuous window closing signal instead of the window closing signal of the length of time set by the timer when the window closing is being stored. Supply to drive motor, time comparator An emergency switch circuit consisting of a forced window opening signal generator is provided.This time comparator is connected to a timer and a logic circuit, and the window closing signal supplied to the window drive motor when the door is opened / closed When the time is shorter than the set time, the window opening signal is supplied to the window driving motor from the forced window opening signal generator.

In the automatic opening / closing safety device according to the present invention, when the automatic shutoff device, that is, the window drive motor is stopped by an external force,
For example, a device that cuts off the current supply to the motor by detecting an excessive current is used. The automatic shut-off device ensures that the operation of the window ends when the window is completely closed or fully opened.

The present invention is premised on the idea that the time required to open a fixed amount of window and the time required to close the same amount are substantially equal. Although it may take some extra time to close the window, it is rarely faster to close. Therefore, when the voltage supplied to the window drive motor is cut off by the automatic cutoff device within a time shorter than the time for opening the window, it is determined that the foreign matter is sandwiched.

The automatic opening / closing safety device according to the present invention is activated by a door switch that is operated when the door is unlocked or when the door is opened, and drives the motor for a fixed time determined by a timer to open the window. Also, when this door switch is operated in the opposite direction when the door is locked or the door is closed, in the case of normal operation,
The window is closed for the time determined by this timer or longer.

The time comparator compares the voltage of the timer, which is activated even when the window is closed, with the window closing drive voltage, and when the drive voltage drops to 0 earlier than the timer voltage, the foreign matter is caught. To judge. At this time, the time comparator activates the emergency switch circuit and opens the window again.

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

Window drive motor 1 consisting of a motor capable of forward and reverse rotation
Is connected to the power supply Vcc through the automatic shutoff device 2 and the manual window operation switch 3. Thereby, the window can be opened and closed to an arbitrary opening degree by operating the manual window operation switch 3 as usual. At that time, when the window reaches full opening or full closing, the automatic shutoff device 2 stops the power supply to the window drive motor 1. Therefore, in this state, the manual window operation switch 3
The window drive motor 1 will no longer operate even if is operated continuously.

A door switch 4 is attached to the door, and the door switch 4 is operated by the door itself or by operating a door lock when opening and closing the door. In this embodiment, the door switch 4 is closed when the door is opened and is opened when the door is closed. Therefore, in the state of the switch 4 shown, the door is closed.

One terminal of the door switch 4 is connected to the power supply Vcc. The other terminal of the door switch 4 is first connected to the trigger input terminal of the timer 6 via the differentiating circuit 5. As a result, the timer 6 is triggered each time the door switch 4 is opened and closed, and generates a pulse having a predetermined width.

In addition, the other terminal of the door switch 4 is connected to the two AND gates A2 and A3 via the OR gate O4. Since the corresponding input terminal of the AND gate A2 is configured as an inverting input terminal, this AND gate A2 functions as a prohibition gate. As a result, when the door is opened, the voltage supplied from the automatic shutoff device 2 reaches the AND gate A6 via the AND gate A3 by the signal supplied to the AND gates A2 and A3 via the OR gate O4. At this time, since the timer 6 is triggered as described above, the AND gate A6 generates an output and supplies this output to the window drive motor 1 via the OR gates O6 and O1.

When the door is closed, the AND gates A2 and A3 do not receive the signal, so the voltage supplied from the automatic shutoff device 2 is
Pass AND gate A2 and reach AND gates A4 and A5. Since timer 6 has been triggered at this time as well, AND gate A
5 produces an output which is fed to the window drive motor 1 via the OR gates O5 and O2. In this way, when the door is opened and closed, the window drive motor 1 operates for a period determined by the timer 6, and the window is opened and closed by a predetermined width.

When the window is opened and closed in synchronization with the opening and closing of the door as described above, even if the opening period and the closing period are the same, the window is not always closed by the opened amount. Normally, the closing speed is somewhat slower, so the opening will be somewhat larger when the window is opened and closed. As a result, when the window is completely closed, there is a gap in the window after the door is opened and closed. Therefore, another measure is taken according to the invention.

That is, according to the present invention, a storage device for storing a state in which the window is completely closed is provided, and in the present embodiment, the storage device is composed of the flip-flop 8. The set input side of the flip-flop 8 is connected to the output side of the AND gate A1, the inverting input side of the AND gate A1 is the output terminal of the automatic cutoff device 2, and the other input side of the AND gate A1 is the delay circuit 7
It is connected to the closing side contact of the manual window operation switch 3 via. As a result, the flip-flop 8 is set when the window is closed and the automatic shutoff device 2 stops supplying power, that is, when the window is completely closed.

On the other hand, the reset input side of the flip-flop 8 is an OR gate
It is connected to the open side contact of the manual window operation switch 3 and an emergency switch circuit 9 described later via O3. This causes the flip-flop 8 to be reset if any windows are opened anyway.

The output of this storage device is supplied to another AND gate A6 which bypasses the AND gate A5. Therefore, when the window is completely closed, the opening operation of the window when opening and closing the door is performed only for the period determined by the timer 6, but the closing operation is related to the timer 6. Not until the window is completely closed.

Since the trapping is detected as described above, the window closing time when the window is opened / closed by the door opening / closing is compared with the operating time of the timer 6. Therefore, the output terminal of OR gate O5 is
The output terminal of the timer 6 is connected to the inverting input terminal of the AND gate A7 and the other input terminal of the AND gate A7. The AND gate A7 thereby produces an output when the closing signal ends while the timer 6 is producing an output and triggers a forced window opening signal generator consisting of the subsequent monostable multivibrator 9. The output of the monostable multivibrator 9 switches the output voltage of the automatic shutoff device 2 from the closing side to the opening side via the OR gate O4, and sends an opening signal to the window drive motor 1 via the OR gate O6. This allows the window to be opened for a period of time.

EFFECTS OF THE INVENTION According to the automatic opening / closing safety device of the present invention, it is possible to reliably prevent damage to the human body or the like due to the trapping. Moreover, since this automatic opening / closing safety device does not require a special sensor, it can be manufactured at low cost and requires no adjustment at the time of mounting. Further, regardless of the opening of the window, the window can be opened and closed by opening and closing the door, and even in that case, it is possible to reliably detect the trapping. Further, since the automatic opening / closing safety device according to the present invention does not require addition of mechanical parts, it can be easily incorporated into an existing power window.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an automatic opening / closing safety device according to the present invention. 1 ... Window drive motor, 2 ... Automatic shutoff device, 3 ... Manual window operation switch, 4 ... Door switch, 5 ... Differentiation circuit, 6 ... Timer, 7 ... Delay circuit, 8 ... Flip-flop , 9 …… Monostable multivibrator, Ai …… AND
Gate, Oi ... OR gate

Claims (1)

[Claims] 1. A power window automatic opening / closing safety device in which a foreign object is caught when the window is closed to open the window. A window driving motor for opening and closing the window is provided, and the window driving motor is a manual operation. It is connected to the power supply through the window operation switch and the automatic shutoff device, and the automatic shutoff device stops energizing the window drive motor when the window is fully opened and closed, and when the window is stopped by external force. However, a door switch that is operated when opening and closing the door is provided, and this door switch is connected to a timer and a logic circuit. It is equipped with a storage device that supplies a door open signal and a door close signal with a length to the window drive motor and detects and stores the state in which the window is completely closed. When I remember An emergency switch circuit is provided, which supplies a continuous window closing signal to the window drive motor instead of the window closing signal of the set time of the timer, and consists of a time comparator and a forced window opening signal generator. The time comparator is connected to the timer and the logic circuit, and when the window closing signal supplied to the window drive motor when the door is opened and closed is shorter than the set time of the timer, the forced window opening signal generator sends the signal to the window drive motor. Power window automatic opening and closing safety device characterized by supplying a window opening signal.