JPH03125626A - Power window - Google Patents

Abstract

PURPOSE:To eliminate the need for troublesome on-off control switching operation at the time of starting travel by constituting a window of a car to be automatically fully closed when the stopped car starts with the window fully opened, and then exceeds a specified speed and a specified acceleration. CONSTITUTION:When a movable contact 1 of an on-off control switch 4 is in neutral position, a car is stopped, and the car starts with its window glass fully opened, a detection signal from a low-limit limit sensor 21 detecting the fully opened window glass is inputted to an AND gate or an AND 31. When an on-signal outputted from a timer relay 29 for receiving signals of a travel sensor 28 after a specified time has elapsed, and an on-signal outputted when outputs of a speed sensor 22 and an acceleration sensor 25 exceed reference values respectively, are inputted to the AND 31 together, a transistor 6 is turned on by the output of the AND 31. A contact 12 of a relay 7 is thus switched, and a motor 11 is rotated forward to close the window glass.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for opening and closing a vehicle window, such as a window glass of an automobile, using a motor.

[Conventional technology]

Most automobiles are equipped with power windows that open and close the window glass of automobiles by operating an opening/closing operation switch because of their ease of operation.

For example, this type of device disclosed in Japanese Patent Publication No. 63-30164 will be explained with reference to FIG.
A window opening/closing operation switch is shown, which is composed of a p side, that is, a fixed contact (2) on the closing side of the window glass of an automobile (not shown), and a down side, that is, a fixed contact (3) on the opening side of the window glass, (
5) is the set terminal S connected to the fixed contact (2) side
, a flip-flop with a reset terminal R and an output terminal T-Q, the output terminal Q of which is connected to the base of a switching transistor (6) having a relay 7) on the collector side; The set terminal S of the pump (8) is connected to the fixed contact (3), and the output terminal Q is connected to the base of a switching transistor (9) having a relay (10) on the collector side.

A closed loop circuit formed by a window glass drive motor (11) and movable contacts (12) and (15) that are always connected to fixed contacts (13) and (16) on the input/output side, and a vehicle-mounted circuit (not shown). By a circuit consisting of a fixed contact (14) connected to the battery and connected to the movable contact (12) when the motor (11) rotates in the normal direction, and a fixed contact (17) connected to the movable contact (15) when the motor (11) rotates in the reverse direction. , a drive circuit for positive and reverse control of the motor (11) is formed. A resistor R is connected between the fixed contacts (1, 3>, (16)) and ground through which the load current of the motor (11) flows.

is connected, the load voltage generated across the resistor R is connected to the non-inverting terminal, and the reference value is the overload voltage value corresponding to the overload current of the motor (11) obtained from the potentiometer (18). Voltage ■8 is input to the inverting side terminal, and when the voltage generated by the resistor Rt exceeds the reference value ■8, a signal is output and this is sent to the flip-flops (5) and (8).
A comparator (19) is provided which inputs to the reset terminal R of.

To explain the operation of this device, Kaida operation switch (4)
When the movable contact (1) is connected to the fixed contact (2), the flip-flop (5) is energized and the output signal from the output terminal Q is input to the switching transistor (6), which turns on the relay ( 7) is excited and the movable contact (12
) to the fixed contact (14), the fixed contact (14
), movable contact (12), motor (11), movable contact (1
5) A driving current is supplied from the battery to the fixed contact (16) and the resistor RL, causing the motor (11) to rotate normally and closing the window glass. When the window glass is fully closed, an overcurrent several times the normal drive current flows through the motor (11), so the voltage generated by the resistor RL exceeds the base PP voltage v8, and the comparator (19) detects this. ) is input to the reset terminal H of the flip-flop (5), deenergizes it to turn off the transistor (6), demagnetizes the relay (7), and connects the movable contact (12) to the fixed contact ( 13) and stop the motor (11).

To open the window glass, connect the movable contact (1) of the opening/closing operation switch (4) to the fixed contact (3), the flip-flop (8) is energized, and this output signal turns on the switching transistor (9). Then, relay (10)
is excited to connect the movable contact (15) to the fixed contact (17), and the drive current is applied to the fixed contact (17) and the movable contact (15).
, motor (11), movable contact (12), fixed contact (13)
) and resistor R5, and the motor (11) is reversed to open the window glass. When the current to the motor (11) increases when the window glass is fully opened, the comparator (19) determines that the voltage generated by the resistor RL exceeds the reference voltage v8, and sends the detection signal to the reset terminal R of the flip-flop (8). is input and deenergized to turn off the switching transistor (9), demagnetize the relay (10), connect the movable contact (15) to the fixed contact (16), and stop the motor (11).

[Problem to be solved by the invention]

The above-mentioned device requires the opening/closing operation switch to open and close the window glass, so after fully opening the window glass and paying the toll at the toll gate of the toll road, the following vehicle can proceed. Operating the opening/closing switch and fully opening the window glass while quickly accelerating so as not to interfere with the vehicle is cumbersome and requires a portion of one's attention to be used, impairing safe driving. There is a problem that there are concerns.

This invention was made in view of the above-mentioned problem, and its purpose is to automatically close the vehicle window without repeatedly opening and closing it when a stopped vehicle with the vehicle window fully opened starts traveling. Our goal is to provide a new power window that can

[Means to solve the problem]

The present invention is characterized by a vehicle window up switching circuit and a vehicle window down switching circuit that are energized in response to a selective switching signal from a vehicle window opening/closing operation switch, and an output signal of the vehicle window up switching circuit. In a power window of a type that is provided with a motor drive control circuit in which a forward rotation circuit for a vehicle window drive motor is formed and a reverse rotation circuit for the vehicle window drive motor is formed by an output signal of a vehicle window lowering switching circuit. a first detection circuit that detects when a window is fully opened; a second detection circuit that detects military speed exceeding a predetermined value; a third detection circuit that detects vehicle acceleration that exceeds a predetermined value; 4th to detect
and a holder that holds the output of an AND gate into which the detection signals of the first to fourth detection circuits are input, and a holder connected between the output side of the holder and the vehicle window up switching circuit. The configuration includes a unidirectional element.

[For production]

When a stopped vehicle with the vehicle window fully open starts running and reaches a predetermined speed and acceleration state, a first detection circuit detects that the vehicle window is fully open, and a second detection circuit detects a predetermined vehicle speed. Detection signals from the detection circuit, a third detection circuit that has detected a predetermined acceleration, and a fourth detection circuit that has detected the start of running are input to an AND gate, and this AND signal is sent to the vehicle via a retainer. The signal is input to the window lift switching circuit, which is energized to cause the drive control circuit to form a forward rotation drive circuit, thereby automatically closing the vehicle window.

〔Example〕

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

FIG. 1 shows a circuit diagram of an embodiment of the device of the present invention, and the components designated by reference numerals (1) to (19) in the figure are the same components as those explained in FIG. , although it has the same function, its reconstruction will be omitted.

Reference numeral (21) is a lower limit switch that is disposed on the inside of a car door at a position where it comes into contact with the lower edge of the window glass when it is fully open, and is activated by contact with the lower edge of the window glass to output a signal; (22) is a lower limit switch, for example. A generator-type speed sensor that generates a voltage corresponding to the rotation speed of an automobile's propeller shaft.
On the output side, the detected speed signal and, for example, 20 kilotorr/
A reference power supply (23) that generates a reference voltage ERI equal to the vehicle speed voltage is input, and the vehicle speed voltage is equal to the reference voltage ERI.
A comparator (24) is connected that outputs a detection signal when the value exceeds .

(25) is an acceleration sensor that converts an acceleration detection signal from, for example, a vibration meter into a voltage signal and outputs it, and combines this sensor output signal with a reference voltage E1. ! A reference power source 26) that generates EI2 is input, and the sensor output signal is the reference voltage EI1.
A comparator (27) is connected which outputs a detection signal when the value exceeds 2. (28) is, for example, an electromagnetic proximity switch that detects the start of running of a car and is placed opposite a single protrusion on the outer peripheral surface of the propeller shaft. A timer relay (29) is connected that receives a detection signal from a proximity switch (28) that detects passage of a rotating protrusion, outputs an on signal, and turns off when, for example, about 10 to several tens of seconds have elapsed.

These lower limit sensor (21), comparator (24) (
27) and the output side of the timer relay (29) are
) (31), and the output side of this AND gate (31) is connected to the output terminal Q of the flip-flop (5) and the switching transistor (6) via a holder (33) that holds the output and a diode (32). ) is connected to the base and the connecting conductor. Further, the holder reset terminal R is connected to the output side of the comparator (19).

To explain the operation of the device configured in this way, when the movable contact (1) of the opening/closing operation switch (4) is in the neutral position and the car is stopped and the window glass is fully open, Only the detection signal from the lower limit sensor (21) that detects the fully open glass is input to the AND gate (31), and none of the signals from the speed sensor (22), acceleration sensor (25), and travel sensor (28) are input to the AND gate (31). No detection signal is output from either. When the car starts running,
The detection signal from the running sensor (28) that detected this is input to the timer relay (29), while the speed sensor (22)
The detection signals from the acceleration sensor (25) and the acceleration sensor (25) are input to the comparators (24) and (27), respectively, and the reference voltage ER1
A comparison with +ER2 is made. Then the vehicle speed increases, the vehicle speed is 20 km / hour, the acceleration is 10 km / 1 second
If the kilometer/hour is exceeded, the comparator that detects this (
The detection signals of 24) and (27) and the ON signal from the timer relay (29) that is output for a predetermined period of time are input to the AND gate (31), and this AND signal is sent to the holder (33).
and is input to the base of the switching transistor (6) via the diode (32), which is turned on to excite the relay (7) and connect the movable contact (12) to the fixed contact (14).
), and the drive current is connected to the fixed contact (14) and the movable contact (14).
12), the current flows through the motor (11), the movable contact (15), the fixed contact (16), and the resistor RL, and the motor (11) is rotated in the normal direction to close the window glass. When the current to the motor (11) increases when the window glass is fully opened, the comparator (19)
It is determined that the generated voltage of L exceeds the reference voltage (■8), and a detection signal is output. The detection signal is input to and deenergizes the reset terminal R of the retainer (33), turns off the switching transistor (9), demagnetizes the relay (10), and stops the motor (11).

In addition, in this embodiment, the case where the AND signal of the AND gate (31) is applied to the connection conductor between the flip-flop resistor 5) and the switching transistor (6) is explained, but it is also applied to the set terminal S side of the flip-flop (5). Even if connected, the same effect is achieved, and the acceleration sensor is removed and the output signal of the speed sensor is differentiated by a differentiation circuit.
It is also possible to configure the differential signal to be input to the comparator (27) as an acceleration signal.

〔Effect of the invention〕

As described above, according to the present invention, in the device for opening and closing a vehicle window by switching the vehicle window opening/closing operation switch,
A first detection circuit that detects when a vehicle window is fully opened, a second detection circuit that detects a vehicle speed that is equal to or greater than a predetermined value, a third detection circuit that detects an acceleration that is equal to or greater than a predetermined value, and detects the start of running of the vehicle. In addition to providing a fourth detection circuit for detecting When a stopped vehicle with its windows fully open starts traveling and exceeds a predetermined vehicle speed and acceleration, the windows can be automatically fully closed without any operation of the opening/closing operation switch. This eliminates the inconvenience of having to operate the open/close switch, allowing the driver to concentrate on safe driving.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the device of the present invention, and FIG. 2 is a circuit diagram of a conventional device. In the drawings (1)...Movable contact, <2), (3)...Fixed contact, 4)...Opening/closing operation switch, (5), (8)
... Flip-flop, (6), (9) ... Switching transistor, (7), (10) ... Relay, (11) ... Window glass drive motor, (12),
(15)...Movable contact, (13), (14), (1
6), (L'Q... fixed contact, (18)... potentiometer, (19)... comparator, (21)... lower limit switch, (22)... speed sensor, (25)... acceleration sensor, (28)... Traveling sensor, (24) (27)
... Comparator, (29) ... Timer relay, (31) ... AND gate, (32) ... Diode, (33) ... Holder. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] A vehicle window raising switching circuit and a vehicle window lowering switching circuit that are energized in response to a selective switching signal from a vehicle window opening/closing operation switch; In a power window of the type described above, the power window is provided with a motor drive control circuit in which a forward rotation circuit for the drive motor is formed and a reverse rotation circuit for the vehicle window drive motor is formed by an output signal of the vehicle window lowering switching circuit. A first detection circuit that detects when a window is fully opened; a second detection circuit that detects vehicle speed that is equal to or greater than a predetermined value; and a third detection circuit that detects vehicle acceleration that is equal to or greater than a predetermined value; a fourth detection circuit for detecting the
A holder that holds the output of an AND gate into which the detection signal of the fourth detection circuit is input, and a unidirectional element connected between the output side of the holder and the vehicle window up switching circuit. A power window characterized by: