JPS6240843Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an interlocking device for a washer and a wiper in a vehicle.

2. Description of the Related Art Conventionally, there has been an interlocking device in a vehicle in which when a washer switch is operated, a wiper is operated in conjunction with a short delay after the washer switch is operated.

However, when using the conventional washer and wiper interlocking device, the driver had to keep operating the washer switch until the washer fluid spouted from the nozzle and adequately wet the windshield.

In addition, under normal vehicle driving conditions, the operating time for the washer switch is 2 to 3 seconds, even considering the time delay (0.5 to 1 second) from when the washer motor starts rotating until the washer liquid is spouted from the nozzle.
The level is often appropriate, and if you press the washer switch only once and the washer continues to operate automatically during that time, it is not only convenient for the driver but also effective for safe driving. .

The present invention was developed in consideration of the above, and aims to eliminate the above drawbacks and to make the watch switch operate for a short period of time.
To provide a washer/wiper interlocking device which operates the washer continuously for a fixed time when operated, and continues to operate the washer for the entire operation time when operated for a long period of time.

The present invention will be explained below with reference to examples.

The figure is a block diagram of one embodiment of the present invention.

1 is a watch switch, 2 is a timer means consisting of a single safety multivibrator which is triggered by the ON signal of the watch switch 1 and generates an output for a predetermined period of time, for example, 0.5 seconds; 3 is an output signal of the watch switch 1; AND circuit whose input is the output of timer means 2; 4 is a watch switch 1;
When the timer means 2 is turned off, if the output of the timer means 2 is present, the timer means consists of a single safety multivibrator which is triggered via the AND circuit 3 and generates an output for, for example, 2 seconds. 5 is the output signal of the watch switch 1 and the timer means. OR circuit with output of 4 as input, 6
Reference numeral 8 indicates a washer motor drive circuit which drives the washer motor 7 by the output of the OR circuit 5; 8 is a timer means consisting of a single safety multivibrator which is triggered by the output of the OR circuit 5 and generates an output for, for example, one second; 9 indicates the output of the timer means 8; timer means consisting of a single safety multivibrator which is triggered when running out and produces an output for, say, 3 seconds;
A wiper motor drive circuit 10 is driven by the output of the timer means 9 and drives the wiper motor 11.

In this embodiment as described above, when the watch switch 1 is turned on, the timer means 2 is triggered at the same time as the watch switch 1 is turned on. At the same time, the output of the washer switch 1 through the OR circuit 5 drives the washer motor 7 through the washer motor drive circuit 6.

Next, cases in which the on-period of the watch switch 1 is less than or equal to the set time of the timer means 2 (0.5 seconds in this embodiment) and cases in which the on-period of the watch switch 1 is longer than the set time (0.5 seconds) will be described.

First, the ON period of watch switch 1 is 0.5
A case of less than a second will be explained.

In this case, at the same time as the washer switch 1 is turned on, the output of the washer switch 1 is passed through the OR circuit 5 to the washer motor drive circuit 6.
The washer motor 7 is driven via the . Also, at the same time as the washer motor 1 is turned on, the timer means 2 is triggered and generates an output for 0.5 seconds.
AND circuit 3 opens its gate for 0.5 seconds. During this time, the washer switch 1 is turned on.
Therefore, when the watch switch 1 is turned off, the timer means 4 is triggered.
The output passes through an OR circuit 5 and drives a washer motor 7 via a washer motor drive circuit 6. Therefore, the ON period of watch switch 1 is
Even if the time is 0.5 seconds or less, the washer motor 7 continues to be driven for the time set by the timer means 4 (2 seconds in this embodiment) from when the washer switch 1 is turned off. Therefore, the washer motor 7 continues to rotate from when the washer switch 1 is turned on, and from the time when the washer switch 1 is turned off, the washer motor 7 continues to rotate.
It will continue to rotate until seconds have elapsed.

Next, the on period of watch switch 1 is 0.5
The case where the time exceeds seconds will be explained.

When the washer switch 1 is turned on, the washer motor 7 is driven through the OR circuit 5 and the washer motor drive circuit 6 while the washer switch 1 is on. When the watch switch 1 is turned off, the timer means 2 is triggered at the same time as the watch switch 1 is turned on.
Since the set time (0.5 seconds) has already passed,
AND circuit 3 has closed its gate and timer means 4 is not triggered. Therefore, the washer motor 7 is driven only while the washer switch 1 is on, as described above.

Next, driving of the wiper motor 11 will be explained.

The output of the OR circuit 5 triggers the timer means 8, and the set time of the timer means 8 (in this embodiment, 1
seconds), the timer means 9 is triggered. Therefore, the wiper motor 11 is driven after the time set by the timer means 8 (after 1 second has elapsed) and for the time set by the timer means 9 (3 seconds in this embodiment).

Therefore, in this embodiment, when the washer switch 1 is turned on, if the on period of the washer switch 1 is 0.5 seconds or less, the washer motor 7 starts the washer from the time the washer switch 1 is turned on. It is driven continuously for 2 seconds after switch 1 is turned off. Furthermore, the wiper motor 11 is driven for 3 seconds, one second after the washer switch 1 is turned on.

Also, the on period of watch switch 1 is 0.5
If the time exceeds seconds, the washer motor 7 is driven while the washer switch 1 is on.
Further, the wiper motor 11 is driven for 3 seconds with a delay of 1 second from when the washer switch 1 is turned on.

Note that the time settings for the timer means 2, 4, 8, and 9 are arbitrary.

As explained above, according to the present invention, when the driver presses the washer switch once, the washer operates for a certain period of time, and the wiper operates in conjunction, making the operation of the washer and wiper simple and safe. Can contribute to driving.

Furthermore, if the driver wishes to keep the washer in operation for an arbitrary period of time, he or she may simply turn on the washer switch for a long time.

[Brief explanation of the drawing]

The figure is a block diagram of one embodiment of the present invention. 1... Washer switch, 2, 4, 8 and 9... Timer means, 6... Washer motor drive circuit, 7... Washer motor, 10... Wiper motor drive circuit, 11... Wiper motor.

Claims (1)

[Scope of utility model registration request] a first timer means activated by closing the watcher switch; a second timer means activated by opening the watcher switch during an output generation period of the first timer means; a first drive means for driving the washer motor during the closing period or during the output generation period of the second timer means; a third timer means that is activated simultaneously with the start of operation of the first drive means; The fourth timer means is activated when the set time of the timer means has elapsed, and the second drive means is configured to drive the wiper motor during the set time of the fourth timer means, and the washer switch is operated for a short time. The washer and wiper interlocking device is characterized in that when the washer is operated for a long time, the washer operates continuously for a certain period of time, and when the washer is operated for a long time, the washer continues to operate for the entire operating time.