KR19990008464U - Car Power Window Safety Device - Google Patents

Abstract

The present invention relates to a power window safety device for an automobile, wherein a power window device in which a motor for operating each window is wired between a power line and a ground line through an individual control switch and an integrated control switch: a current of the power line is a predetermined value A load sensing unit disposed on the power supply line to generate a signal through the operation line when the error is abnormal; And it is characterized in that it comprises a relay connected to the operation line to open the ground line of the motor when receiving the signal of the load sensing unit.

Accordingly, in the device for opening and closing the window by the electric force by the switch operation, there is an effect of preventing a safety accident from being caught by a part of the occupant's body in the window.

Description

Car Power Window Safety Device

The present invention relates to a power window safety device for a vehicle, and more particularly, a power window safety device for a vehicle that prevents a safety accident from being caught by a part of a passenger's body in a window in a device that opens and closes a window by electric force by a switch operation. It is about.

Referring to FIG. 1, in a vehicle having a power window device, the window 11 is moved up and down by a regulator 12 composed of a slider and a motor 13. The motor 13 may be supplied with power through the integrated control switch 20 installed in the driver's door, or may be supplied with power through the individual control switch 14 installed in the passenger door or the rear door.

The integrated control switch 20 has a function of controlling the motor 13 in preference to the individual control switch 14, and has an automatic circuit unit (FIG. 2) that completes the up or down operation with one touch. However, these power windows, which offer convenience over manual operation, often have the disadvantage of causing a safety accident.

For example, if the driver operates the integrated control switch 20 with one touch while the occupant is reaching out to the rear window, the accident may occur because the window is raised and continues to press. Infants and the elderly are sometimes fatal.

Accordingly, an object of the present invention is to provide a power window safety device for a vehicle that prevents a safety accident from being caught by a part of a passenger's body in a window in an apparatus for opening and closing a window by electric force by a switch operation.

1 is a perspective view showing a main configuration of a power window of an automobile,

2 is a circuit wiring diagram for performing an algorithm according to the present invention.

Explanation of symbols on the main parts of the drawings

11: Windows 12: Regulator

13: motor 14: individual control switch

15: battery 16: ignition switch

20: integrated control switch 21: power line

22: ground wire 23: operation line

24: load detection unit 25: relay

26: pushbutton

In order to achieve this object, the present invention provides a power window device in which a motor for driving each window is wired between a power supply line and a grounding line through an individual control switch and an integrated control switch. A load detector disposed on the power line to generate a signal; And when receiving the signal of the load sensing unit provides a power window safety device for a vehicle comprising a relay connected to the operation line to open the ground line of the motor.

Hereinafter, with reference to the accompanying Figure 2 will be described in detail a preferred embodiment of the present invention.

The present invention is applied to a power window device in which a motor 13 operating each window is wired between a power supply line 21 and a ground line 22 via an individual control switch 14 and an integrated control switch 20. In an embodiment, the load sensing unit 24 and the relay 25 are additionally arranged on the wiring through the bar and the battery 15 and the ignition switch 16, and the operation line 23 is newly established.

The load detector 24 according to the present invention is disposed on the power supply line 21 so as to generate a signal to the operation line 23 when the current of the power supply line 21 is greater than or equal to a predetermined value. The power line 21 is connected to one end of the motor 13 so that the window is raised, and the load (that is, the current value) increases as soon as an object such as a human body is put in the window.

At this time, the load detector 24 is composed of a detector, an amplifier, a converter, a comparison unit, an output unit, and the like. First, the detector generates a current proportional to the magnitude of the current on the power supply line 21. The magnitude of the load current is detected using a Hall sensor that reacts to the magnetic field around the power supply line 21, and if the detected signal is weak, it is amplified properly by the amplifier. The amplified signal is converted into a voltage signal by a converter for input to a comparator such as an OP amplifier. The comparison unit generates the relay 25 drive output at the output unit when the reference value is higher than the reference value related to the normal driving of the motor 13. The drive output of the relay 25 may be several tens of mA at 12V DC.

In addition, the relay 25 according to the present invention is connected to the operation line 23 to open the ground line 22 of the motor 13 when the signal of the load sensing unit 24 is received. The b contact of the relay 25 is provided at the ground wire 22 so that the ground wire 22 is opened while the relay 25 is energized. When the ground wire 22 is opened, the motor 13 is not energized, and the control through the individual control switch 14 or the integrated control switch 20 is disabled.

At this time, the relay 25 connects the power line 21 and the operation line 23 to their contacts so that the current is maintained even if the signal of the load sensing unit 24 is temporary. When the a contact 25a of the relay 25 is connected between the power supply line 21 and the operation line 23, the relay 25 is self-holding. That is, to ensure that the lift stops and maintains this state upon primary contact with the body before the window causes a fatal injury to the part of the body.

On the other hand, the relay 25 is energized and maintained by the push button 26 is further connected on the operation line (23). When the pushbutton 26 having the reset function is pressed, the relay 25 is turned off so that the contact a 25a is opened and the ground wire 22 is shorted to return to the initial state. In this state, the operation of lowering the window using the individual control switch 14 or the integrated control switch 20 becomes possible. The push button 26 is installed near the individual control switch 14 or the integrated control switch 20.

In operation, the relay 25 operates to stop the motor 13 if a part of the body is caught by the occupant's mistake when the window is raised. Accordingly, if the occupant is alone, the body can be removed by moving the body, and if there is another occupant, the window can be lowered by pressing the pushbutton 26 and then operating the switch.

The power window safety device for a vehicle according to the present invention having such a configuration and action has an effect of preventing a safety accident from being caught by a part of the occupant's body in the window in a device that opens and closes the window by electric force by a switch operation.

Claims (4)

In a power window device in which the motor running each window is wired between the power line and the ground line via separate and integrated control switches: A load detector arranged on the power line to generate a signal to the operation line when the current of the power line is greater than or equal to a predetermined value; And And a relay connected to an operation line to open the ground line of the motor when the signal of the load sensing unit is received. The method of claim 1, wherein the load detection unit A power window safety device for a vehicle, characterized by generating and amplifying a current proportional to the magnitude of the current on the power line, converting it into a voltage signal, comparing it with a reference value, and generating a relay drive output when the reference value is higher. The method of claim 1, wherein the relay The power window safety device of a vehicle, characterized in that the connection between the power supply line and the operation line to their contacts so that the electricity is maintained even if the signal of the load detection unit is temporary. 4. The relay of claim 1 or 3, wherein the relay is Power window safety device for a vehicle, characterized in that the state of maintenance of electricity is released by a push button further connected to the operation line.