KR940009846B1 - Power window safety drive device for vehicle - Google Patents

Abstract

Most power window can not detect the existence of human beings, to cause some critical accident occasionally. The device comprises a sensor (5), a power window control system (10), and window operating switches (SW1,SW2). If the sensor detect any living creature during closing operation consequently power window control system stop the closing operation by sending a high signal to second transistor (Q2). Consequently the first transistor becomes off status of the motor (M) stopped because power supply is stopped. This invention is expected to decrease chorking accident by power-window.

Description

Power Window Safety Drive of Vehicle

1 is a conceptual diagram of a power window driving apparatus of a conventional vehicle.

2 is a detailed circuit diagram of a power window safety drive device for a vehicle according to the present invention.

3 is a waveform diagram of a portion of the apparatus of FIG. 2;

* Explanation of symbols for main parts of the drawings

5 sensor 10 sensor processing unit

15: speaker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety drive device capable of safely driving a power window of an automobile. In particular, the present invention can stop driving of a window when a skin such as a child contacts the window while the power window is driven from an open position to a closed position. The present invention relates to a power window safety drive device for a vehicle.

Power windows for automobiles, which are known to date, open and close windows with simple switch operation. Such a vehicle power window driving apparatus is shown in FIG. The motor M is a motor capable of forward and reverse rotation according to power applied to both ends. A first switch SW1 and a second switch SW2 are formed between both ends of the motor M and the power supply. For example, when the first switch SW1 is connected to the contact a and the second switch SW2 is connected to the contact a ', the motor M rotates in the forward direction to open the power window (not shown). When the first switch SW1 is connected to the contact b 'and the second switch SW2 is connected to the contact b, the motor M is rotated in the reverse direction to close the power window.

However, such a power window drive device for automobiles does not have a safety device, and injuries or deaths occur frequently when closing the power window in the open position by operating a switch, especially when only children are in the car. come.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above drawbacks and to improve the power window safety driving apparatus of a vehicle which can stop the closing operation of the power window when the skin of the creature comes into contact with a predetermined part of the window.

A feature of the present invention for achieving the above object is a motor configured to close a power window and a first position for driving the motor to open the power window, the motor being configured to drive the power window of the vehicle and between the motor and the power source. A power window driving apparatus of a vehicle having a first switch capable of selectively switching a second position to be driven, the power window driving apparatus of a vehicle detecting a contact of a creature in the window and outputting a predetermined first signal when a contact is detected And a sensing unit for outputting a predetermined second signal when not detected, a second switch configured between the second position of the first switch and the motor, and configured between the second switch and the sensing unit and And a switch driving means for driving the second switch to a closed position in accordance with a second signal and driving the second switch to an open position in accordance with a first signal. It's in the car's power window safety drive.

The present invention also includes an alarm means for alarming when the detector detects a contact.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in more detail.

2 is a detailed circuit diagram of a power window safety drive apparatus for a vehicle according to a preferred embodiment of the present invention. Since the same reference numerals are used for the same parts as in the first drawing, the duplicate description of the same parts is omitted. The first transistor Q ₁ is provided between the second switch SW2 and the motor M. FIG. The first transistor Q ₁ reverses the motor M so that the first switch SW1 is connected to the contact b 'and the second switch SW2 is connected to the contact b to close the power window. It is configured to be controlled ON / OFF during the driving period.

On the other hand, the present invention is provided with a sensor (5) that can detect when a predetermined portion of the power window (not shown) of the vehicle is in contact with the skin of the organism. In addition, the present invention is also provided with a sensor processing unit 10 in response to the signal from the sensor (5). The sensor processing unit 10 receives the driving power through the second switch SW2, and outputs a "high" signal when the biocontact signal is detected from the sensor 5, and during the other period "low" Low) "signal is output. The sensor processing section 10 also includes a circuit capable of driving an alarm means such as a speaker 15 when a biocontact signal is detected from the sensor 5. Since the sensor 5 and the sensor processing unit 10 may use a known IC, further detailed description thereof will be omitted.

The safety drive device of the present invention is further provided with a driving means of the first transistor Q ₁ between the base of the first transistor Q ₁ and the sensor processing section 10. The driving means connects the collector to the power supply voltage terminal V _DD through a resistor R ₃ and simultaneously to the base of the first transistor Q ₁ , and the emitter is grounded to a second transistor Q _2. ) Is included. The base of the second transistor Q ₂ has bias resistors R _{1 and} R ₂ and is connected to an output end of the sensor processing unit 10.

The operation of the power window safety drive device for a vehicle according to the present invention configured as described above will be described in detail. The motor M is a motor capable of forward and reverse rotation according to power applied to both ends. That is, when the first switch SW1 is connected to the contact a and the second switch SW2 is connected to the contact a ', the motor M is rotated in the forward direction to drive the power window (not shown). When the first switch SW1 is connected to the contact b 'and the second switch SW2 is connected to the contact b, the motor M is rotated in the reverse direction to close the power window.

Here, while the power window is operating from the open position to the closed position, the sensor processing unit 10, which is supplied with power through the second switch SW2, transmits the signal S1 having a "low" state to the second transistor Q _2. ) Is applied to the base. Then, the second transistor (Q ₂₎ is "off (OFF)", and the state, and thus is applied to the first transistor, the high signal (S2) to the base terminal of the (Q ₁₎ a first transistor (Q ₁₎ is By being in the "ON" state, the motor M is driven until the power window is completely closed.

However, when the skin such as a person comes into contact with the power window while driving to the closed position, the sensor 5 detects this, and thus the sensor processing unit 10 transmits the signal of the "high" state to the second transistor Q. ₂ ) Therefore, the second transistor Q ₂ is "on" and therefore the first transistor Q ₁ is "off". Therefore, the motor M is not supplied with power and stops its operation. As such, when the power window is normally operated and when the skin contact with the power window is detected, the two transistors are respectively applied to the base terminals of the first transistor Q ₁ and the second transistor Q ₂ . Is shown in FIG. 3 to turn on or off.

In addition, the sensor processing unit 10 warns of a dangerous state by sounding an alarm sound through the speaker 15.

As described above, the power window safety drive device according to the present invention can prevent accidents by adding a safety circuit that can eliminate such hazards during operation from the open position to the closed position containing the hazards. It works.

Claims (4)

It is possible to selectively switch between the motor for driving the power window of the vehicle, the first position for driving the motor to close the power window and the first position for driving the motor to open the power window between the motor and both ends of the power source. In a power window driving apparatus of a vehicle provided with a first switch, detecting a contact of a living organism in the window and outputting a predetermined first signal when a contact is detected and outputting a predetermined second signal when not detected. Sensing unit; A second switch configured between the second position of the first switch and the motor; And a switch driving means configured between the second switch and the sensing unit, driving the second switch to a close position according to the second signal of the sensing unit, and driving the second switch to an open position according to the first signal. Power window safety drive device of a vehicle comprising a. 2. The power window safety driving device of claim 1, wherein the second switch is a first transistor. The method of claim 1, wherein the switch driving means turns off the first transistor in response to the first signal of the sensing unit and turns on the first transistor in response to a second signal. A power window safety drive device for a vehicle comprising a second transistor. The power window safety driving apparatus of claim 1, wherein the sensing unit is operated while the first switch is selectively switching a second position.