JPS61193924A - Power supply device for system for automatically opening and closing window of vehicle - Google Patents

Abstract

PURPOSE:To previously prevent the generation of a state in which a power supply is unable to use, due to excessive power consumption on contrary to the intension of a crew by deleting the second output signal by means of the second output signal generating means in response to earlier one of deletion of the first output signal. CONSTITUTION:A system 10 of automatically opening and closing a window consists of a closing switch 11 provided in a suitable place of the door of a driver's seat, an opening switch 12, a forward and reverse type rotation motor M coupled operationally to the window and a control circuit 13. And a power supplying device 20 has door switches 22, 23, and the switch 22 is closed to generate a detected signal for the opening when the door of the driver's seat is opened, and the switch 22 is opened to delete a detected signal for the opening when the door is closed. In the case that the switch 22 maintains the generation of the detected signal for the opening and closing and closing in error due to troubles, an Op gate 25 does not generate a reset signal even when the door of the drivers' seat is opened before a timer signal from a timer 24 is deleted, and the provision of the supplying voltage is intercepted by the following reset signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic window opening/closing system for a vehicle, and more particularly to a power supply device for an automatic window opening/closing system for a vehicle, which is used to supply power to the automatic window opening/closing system.

[Prior art]

Conventionally, in a power supply device for this type of automatic vehicle window opening/closing system, a door switch is disposed on the driver's door of the vehicle, as disclosed in Japanese Patent Application Laid-open No. 56-146442, for example. When the driver's door is opened within a certain period of time after the ignition switch of the vehicle is opened, this is detected by the door switch, and while the detection state of the door switch continues, that is, while the driver's door is in the open state, Some systems maintain the operating state of the automatic window opening/closing system by continuously supplying power from the battery to the automatic window opening/closing system.

[Problems to be Solved by the Invention] However, in such a configuration, if the door switch is malfunctioning, the driver's door remains open even after the driver's door is closed. Due to erroneous detection of the door switch, the battery may continue to supply power to the automatic window opening/closing system, causing the battery to become unusable due to excessive power consumption. Further, even if the door switch is normal, if the driver's seat door is left open for a long time, the battery power may be consumed unnecessarily.

In order to cope with this problem, the present invention aims to provide a power supply device that suppresses power supply from a power supply to an automatic vehicle window opening/closing system as much as possible.

[Means for solving problems]

In solving this problem, the structural features of the present invention are as follows:
a power source, and is closed in response to opening of the ignition switch of the vehicle to allow power to be supplied from the power source to an automatic window opening/closing system of the vehicle to operate the automatic window opening/closing system in response to opening of the ignition switch. In a power supply device comprising an electric opening/closing means that cuts off the power supply when the door is opened and deactivates the automatic window opening/closing system, the opening/closing means detects when a vehicle door is opened and generates an opening detection signal. detecting means; first output signal generating means for generating a first output signal for a predetermined period of time in response to opening of the ignition switch; a second output signal generating means for extinguishing the second output signal in response to generation of a detection signal or extinguishment of the first output signal, the electrical switching means generating the second output signal; The present invention is configured to allow the power supply in response to the second output signal, and to cut off the power supply in response to the disappearance of the second output signal.

[Effect]

By configuring the present invention in this way, the first output signal generating means generates the first output signal in response to opening of the ignition switch, and at the same time, the second output signal generating means generates the second output signal. generates a signal, in response to which the electrical opening/closing means allows power to be supplied from the power supply to the automatic window opening/closing system, generates an opening detection signal from the opening detection means when the door is opened, and The second output signal generating means causes the second output signal to disappear in response to whichever of the first output signals disappears, whichever comes first;
In response to this, the electrical opening/closing means cuts off the power supply from the power source to the automatic window opening/closing system, so that the operating state of the automatic window opening/closing system before the ignition switch is opened is the same as when the ignition switch is closed. Ill is maintained until the earlier of the opening of the door and the disappearance of the second output signal,
As a result, power consumption of the power source can be suppressed to the necessary minimum. In such a case, even if the door switch cannot correctly detect the opening/closing of the door due to a malfunction, the power supply from the power supply to the automatic window opening/closing system is cut off when the second output signal disappears, so that the door switch cannot detect the opening/closing of the door correctly. It is possible to suppress wasteful power consumption of the power supply regardless of a failure of the switch. Therefore, it is possible to prevent the power source from becoming unusable due to excessive power consumption against the occupant's will.

[Example] Hereinafter, one example of the present invention will be described with reference to the drawings.
In the figure, reference numeral 10 indicates an automatic window opening/closing system commonly used for the driver's door window of a vehicle, and reference numeral 20 indicates a power supply device according to the present invention applied to the automatic window opening/closing system 10. The automatic window opening/closing system 10 includes a closing switch 11 and an opening switch 12 disposed at appropriate positions on the inner wall of the driver's door, a forward/reverse rotary electric motor M operatively connected to the window, a closing switch 11, It is composed of an opening switch 12 and a control circuit 13 connected to a rotating electric motor M.

The closing switch 11 is operated when the window is closed and generates a closing operation signal, while the opening switch 12 is operated when the window is opened and generates an opening operation signal. The control circuit 13 operates under power supply from the power supply device 20 (as described below), and generates a forward rotation signal necessary for forward rotation of the rotary motor M in response to a closing operation signal from the opening switch 11, and performs opening and closing operations. In response to the opening operation signal from the switch 12, a reversal signal necessary for reversing the rotary electric motor M is generated.
becomes inoperable when the power supply from the power supply device 20 is cut off as described below. The rotary electric motor M rotates forward in response to a forward rotation signal from the control circuit 13 to close the window, and rotates in the reverse direction in response to a reverse rotation signal from the control circuit 13 to open the window.

The power supply device 20 has a DC power supply B and a power supply relay 21, and the power supply relay 21 includes an electromagnetic coil 21a,
By excitation (or demagnetization) of this electromagnetic coil 21a, it is closed (
The switch 21b is a normally open switch 21b that is opened or opened. In such a case, the switch 21b is connected between the positive terminal of the DC power supply B and the power receiving terminal of the control circuit 13,
By closing (or opening) the DC power supply B to the control circuit 1.
Allow (or cut off) the application of power supply voltage to 3.

The power supply device 20 also includes door switches 22.2 each disposed on the driver's seat door and the auxiliary seat door of the vehicle.
3, the door switch 22 closes when the driver's door is opened to generate an open detection signal, and opens when the driver's door is closed to eliminate the open detection signal. let

Further, the door switch 23 closes when the auxiliary seat door is opened and generates an open detection signal, and causes this open detection signal to disappear when the auxiliary seat door is closed. The timer 24 has its power receiving terminal connected to the positive terminal of the DC power source B, and the inverting input terminal of the timer 24 is connected to the positive terminal of the DC type #IB through the ignition switch IG of the vehicle. . Therefore, the timer 24
A timer 48 having a predetermined signal width at a high level in response to opening of the ignition switch IG while being supplied with power from the
generate a number. In such a case, the above-mentioned predetermined signal width is a predetermined time T (for example, the number of the normal elapsed times) that is longer than the normal elapsed time from when the ignition switch IG is opened until the driver's door (or the auxiliary seat door) is opened. (times)).

The OR gate 25 is grounded at its first inverting input terminal via both door switches 22 and 23.
The second inverting input terminal of is connected to the output terminal of timer 24. Therefore, the OR gate 25 is connected to the door switch 22.
Generation of open detection signal from (or 23) or timer 24
A reset signal is generated at a high level in response to the disappearance of the timer signal. The flip-flop 26 has its power receiving terminal connected to the positive terminal of the DC power supply B, and the inverted set terminal of the flip-flop 26 is connected to the positive terminal of the DC power supply B via the ignition switch IC. The reset terminal of the flip-flop 26 is O.
It is connected to the output terminal of the R gate 25. However,
The flip-flop 26 is reset by opening the ignition switch IG while being supplied with power from the DC power supply B, and generates a high-level signal from its output terminal, and the OR
It is reset in response to a reset signal from gate 25 to eliminate the high level signal.

The OR gate 27 has its first input terminal connected to the positive terminal of the DC power supply B via the ignition switch IG, and the second input terminal of the OR gate 27 is connected to the output terminal Q of the flip-flop 26. There is. However,
OR gate 27 is the ignition switch! In response to the closing of G, it receives the power supply voltage from the DC power source B and generates a high level signal, and in response to the high level signal from the flip-flop 26, it generates a high level signal. The base of the transistor 28 is connected to the output terminal of the OR gate 27, and the collector of the transistor 28 is connected to the positive terminal of the DC power supply B via the electromagnetic coil 21a of the power supply relay 21. However, transistor 28
becomes conductive in response to the high level signal from the OR gate 27 and becomes nonconductive when the high level signal disappears. This means that the electromagnetic coil 21a is excited (or demagnetized) by the conduction (or non-conduction) of the transistor 28.

In this embodiment configured as described above, when the ignition switch IC is closed, the OR gate 27 receives the power supply voltage from the DC power supply B and generates a high level signal, and in response, the transistor 28 becomes conductive. , power supply relay 2
1 closes the switch 21b by excitation of the electromagnetic coil 21a. Then, the control circuit 13 receives a power supply voltage from the DC power supply B through the switch 21b and becomes activated. Therefore, when a closing operation signal is generated from the closing switch 11, the control circuit 13 generates a normal rotation signal, and in response to this, the rotating electric motor M rotates in the normal direction to close the window. On the other hand, if the opening operation signal is generated from the opening switch 12, the control circuit 13 generates a reverse rotation signal, and in response to this, the rotating electric motor M
is reversed to open the window. Note that, at this stage, it is assumed that both the driver's seat door and the auxiliary seat door are closed.

After that, when the ignition switch IC is opened, the voltage appearing at the fixed contact of the ignition switch IG decreases (see symbol a1 in FIG. 2), and in response, the timer 24 outputs the timer signal (see FIG. (See code C1)
At the same time, the flip-flop 26 is set and a high level signal is generated from its output terminal Q. Then, OR gate 27 generates a high level signal in response to the high level signal from flip-flop 26, and in response, transistor 28 maintains its conductive state to ensure excitation of electromagnetic coil 21a. As a result, the control circuit 13 remains in the operating state even after the ignition switch IG is opened.

Therefore, at this stage, it is assumed that each door switch 22 and 23 are normal, and the driver's door (or auxiliary seat door) is opened before the timer signal from the timer 24 disappears and the door switch 22 ( or 23), if an open detection signal (see symbol b1 in FIG. 2) is generated, the OR gate 25
generates a reset signal, in response to which flip-flop 26 annihilates its generating high level signal and renders transistor 28 non-conductive under the control of OR gate 27. Then, in response to the non-conduction of the transistor 28, the power supply relay 21 stops the excitation state of the electromagnetic coil 21a (see reference numeral di in FIG. 2), opens the switch 21b, and reduces the power supply voltage from the DC power supply B to the control circuit 13. block the granting of As a result, the control circuit 13, that is, the automatic window opening/closing system 10 stops receiving power and becomes inactive, which helps save power consumption of the DC power source B.

Further, as described above, when each door switch 22, 23 is in a normal state and the timer signal from the timer 24 disappears while both the driver's door and the auxiliary seat door are closed, the O
The R gate 25 generates a reset signal, and in response, the flip-flop 26 is reset to eliminate the high level signal, the transistor 2B becomes non-conductive, and the power supply relay 21 turns on the DC power supply by opening its switch 21b. Application of the power supply voltage from B to the automatic window opening/closing system 10 is cut off. As a result, unnecessary consumption of power from the DC power supply B is reduced in the same manner as described above.

On the other hand, due to the failure of the door switch 22, an open detection signal is generated (see symbol b2 in FIG. 3) (or disappears (see symbol b3 in FIG. 3) regardless of whether the driver's door is opened or closed). ) is maintained incorrectly,
Even if the driver's door is opened before the timer signal from the timer 24 disappears, the OR gate 25 will not generate a reset signal; however, upon subsequent disappearance of the timer signal from the timer 24, the OR gate 25 will be reset. Since the DC power supply B generates a signal and the application of power supply voltage to the automatic window opening/closing system 10 is cut off in substantially the same manner as described above, the DC power supply B is able to handle the excessive voltage regardless of the failure of the door switch 22. It is possible to prevent a situation in which the DC power supply B becomes unusable due to power consumption, and it is also useful for saving power consumption of the DC power supply B. In FIG. The excitation state of the electromagnetic coil 21a is shown when the electromagnetic coil 21a is made non-conductive.

Furthermore, even when the door switch 23 is out of order, substantially the same effects as described above can be achieved.

Further, in implementing the present invention, the first signal having the predetermined signal width is activated in response to opening of the ignition switch IG.
A second output signal is generated at the same time as the output signal is generated, and the second output signal is generated in response to either generation of the open detection signal from the door switch 22 (or 23) or disappearance of the first output signal, whichever comes first. A microcomputer programmed to extinguish the timer 24. OR gate 25
, in place of the flip-flop 26 and the OR gate 27, and the transistor 28 is made conductive in response to the generation of the second output signal and rendered non-conductive in response to the disappearance of the second output signal, the above embodiment can be achieved. The same effect can be achieved.

Further, in the above embodiment, an example was described in which the present invention is applied to the automatic window opening/closing system 10 of the driver's door of a vehicle, but the present invention is not limited to this, and the present invention can be applied to the automatic window opening/closing system of the remaining doors of the vehicle. It may also be carried out through the use of

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, and FIGS. 2 and 3 are time charts for explaining the operation of the present invention. Explanation of symbols B...DC power supply, IC...Ignition switch, 10...Window automatic opening/closing system, 20...Power supply device, 21...Power supply relay, 22.23...Door switch, 24 ...Timer, 25...OR gate, 26.
...Flip-flop, 28...transistor.

Claims (1)

[Claims] a power source, and is closed in response to the closing of the ignition switch of the vehicle to allow power to be supplied from the power source to the automatic window opening/closing system of the vehicle to operate the automatic window opening/closing system in response to the opening of the ignition switch. In the power supply device, the power supply device is equipped with an electric opening/closing means that is opened to cut off the power supply and deactivate the automatic window opening/closing system, which detects when a door of a vehicle is opened and generates an opening detection signal. open detection means; first output signal generation means for generating a first output signal for a predetermined period of time in response to opening of the ignition switch; and first output signal generation means for generating a second output signal in response to opening of the ignition switch; a second output signal generating means for causing the second output signal to disappear in response to generation of an opening detection signal or disappearance of the first output signal; A power supply device for an automatic window opening/closing system for a vehicle, characterized in that the power supply is allowed in response to the power supply, and the power supply is cut off in response to disappearance of the second output signal.