JPS61157455A - Vehicle rear wiper operating device - Google Patents

Abstract

PURPOSE:To make it possible to automatically remove rain drops adhering to a rear windshield on the day next to the rainy day when a vehicle ran, by automatically operating the rear wiper in a short time when the vehicle which has run in the rain more than a predetermined time, starts at the next time. CONSTITUTION:When an ignition switch 10 is turned off until a predetermined deenergiaing time has elapsed after a front wiper switch 2 is turned off, and is again turned on, a timer 12 is energized to turn on its contact for several ten minutes. The turning-on time of the contact of the timer is necessary for reciprocating a rear wiper in several times. When the contact of the timer is turned on, current from a capacitor 7 runs through a coil in a relay 13 which is therefore energized to drive a rear motor 15 for operating the rear wiper.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an operating device for a rear wiper of an automobile, etc.
In particular, the present invention relates to a device that automatically operates a rear wiper to clean a rear window when the vehicle is stopped after driving in the rain and then started driving.

"Prior art" As a prior art related to this invention, for example,
There is a vehicle raindrop removal device disclosed in Japanese Patent No.-64845. This vehicle raindrop removal device has a structure in which the front wiper operating circuit and the rear wiper operating circuit are connected through a timer circuit, and when the front wiper is operated, the timer circuit operates the rear wiper for a certain period of time. It is.

[Problems to be solved by the invention] If you drive with only the front wipers operating during rain and then stop, the front window will be clear, but the rear window may have water droplets and dirt. be. In such a case, the rear visibility is obstructed, so you should operate the rear wiper before starting the vehicle, but in reality, there is no obstruction to the front visibility, so there is no need to bother to activate the rear wiper. There are few.

The present invention has been made to solve this problem, and is intended to automatically operate the rear wiper for a short period of time when a vehicle has been running in the rain for a predetermined period of time or more when the vehicle is started.

``Structure of the Invention'' A rear wiper operating device for a vehicle according to the present invention includes a storage means for storing the operation of the front wiper, an erasing means for erasing the memory at a predetermined time from when the front wiper is stopped, Configuration E is characterized in that it includes a control means for operating the rear wiper for a predetermined period of time if the above memory is present when the silica switch is turned on from off.

``Operation'' When driving in the mountains, it is thought that the front wiper will always operate even if the rear wiper does not operate. Therefore, if the operation of the front wiper is detected and memorized, and the rear wiper is operated for a short time based on the memory the next time the vehicle is started, the rear window will automatically open when starting after driving in the rain. It will be cleaned in the future.

[Embodiment J] Fig. 1 is an electric circuit diagram showing a vehicle ride wiper actuating device according to an embodiment of the present invention, where the front wiper %-1 is a low speed when the front wiper switch 2 is turned on to the +1 terminal. When the +2 terminal is turned on, it operates at high speed.

When this front wiper switch 2 is turned on to the +1 terminal side or the +2 terminal side, the diode 4 or 5. The capacitor 7 is charged by using the resistor 6. The resistance value of the resistor 6 and the capacitance of the capacitor 7 are selected so that, for example, the battery can be sufficiently charged by turning on the front wiper switch 2 for several minutes. In this way diode 4
．． 5, a resistor 6, and a capacitor 7 constitute a memory means 3 for detecting and storing the operation of the front wiper.

Next, a resistor 8 is connected in parallel to the capacitor 7,
The charged capacitor 7 is discharged little by little. Therefore, even if the capacitor 7 is sufficiently charged, the resistor 8 will be discharged within a predetermined erasing time (for example, 24 hours) after the front wiper switch 2 is turned off.
This constitutes the erasing means 9. Note that it is also a circuit to substitute the resistor 8 with the resistor of the capacitor 7.

If the ibnirasilane switch 1O is turned off and turned on again within the predetermined erasing period after the windshield wiper switch 2 is turned off, the timer 12 is activated to turn on its contact 121 for a few seconds. The contact ON time of the timer 12 is the time required for the rear wiper to reciprocate several times. Contact point 12 of timer 12. is turned on,
The current from the capacitor 7 flows through the coil of the relay 13 connected in series with this. If the capacitor 7 is sufficiently charged, this current will be large, actuating the relay 13 and closing the contact 13@. Then, the rear wiper motor 15 is activated. However, if the capacitor 7 is insufficiently charged, the discharge current will also decrease, so the relay 1
3 cannot close its contacts 13, and the rear wiper motor 15 is not powered and does not operate, thus with the capacitor 7, relay 13, and timer 12? IiIl
It constitutes the rw means 16.

When the contact on time of the timer 12 ends, the contact 121
When the relay 13 opens, the contact 131 of the relay 13 also opens, and the rear wiper motor 15 is stopped. Further, since the contact 121 is open, a discharge circuit for the capacitor 7 is not formed, and charging is performed when the front wiper switch 2 is turned on as described above.

Next, an embodiment of the pond of the present invention will be described with reference to FIG. 28A and FIG.

HjQ is a block diagram showing an example of the hardware configuration, and FIG. 3 is a flow diagram showing the software y and a of the microprocessor. are given the same reference numerals.

First, when the front wiper switch 2 is turned on, the microprocessor 17 instructs the operating time pulse generator 18 to start operating, and the operating time pulse generator 51B is set to 1, for example.
- Outputs one actuation time pulse signal every 2.5 seconds. The counter 19 counts up this operating time pulse, and stops counting up when it reaches a predetermined upper limit, for example, 48 degrees (S1 in the third diagram).

Next, when the front wiper switch 2 is turned off, the microprocessor I7 deactivates the actuation time pulse generator 4' and starts the elapsed time pulse generator 20. The elapsed time pulse generator 20 sends out one elapsed time pulse signal every hour, for example. The counter 19 counts down the elapsed time pulse number from the previously counted up count value. (S2 shown in the third diagram)
.

When the ibnirasilane switch 10 is turned off and then turned on again, the microprocessor 17
The count value K of 9 is read out, and the comparator 21 compares it with the reference value S preset in the reference value setting m22.

When the result of the comparison is K<S, the microprocessor 17 resets the counter 17, stops the elapsed time pulse generator 20, and enters a standby state.

When K is greater than or equal to S, contact 121I of timer 12
is closed to start operation of the rear wiper motor 15.

At the same time, the counter 19 is reset and the elapsed time pulse generator 20 is stopped! and enters the standby state.

Timer 12 turns off contact 12° after a predetermined short period of time. Then, the rear wiper motor 15 also stops working.

In the above configuration, the microprocessor 17, the operating time pulse generator 18, and the counter 19 constitute a storage means, the microprocessor 17, the elapsed time pulse generator 20, and the counter 19 constitute an erasing means, and the microprocessor 17, the comparator 21, the reference value setter 22, and the timer 12 constitute a control means.

In the embodiment using the microprocessor 17, the front wiper is operated for 10 minutes or more, and then, before 25 hours have elapsed, when the ignition switch is turned off and then turned on, the rear wiper is operated for several seconds.

However, it will not operate after 25 hours, and
Do not operate the front wipers if the operating time is less than 5 minutes.

Note that since the upper limit value and reference (-) of the count amplifier can be set to desired values, the conditions for operating the rear wiper can be arbitrarily changed.

Further, in the above embodiment, a configuration in which only the rear wiper motor is operated has been described, but it is more preferable to operate the rear window wiper motor at the same time.

"Effects of the Invention" The present invention includes a storage means for storing the operation of the front wiper, an erasing means for erasing the memory at a predetermined time from when the front wiper is stopped, and an ibnirasilane switch that is turned on from off. Provided is a rear wiper operating device for a vehicle, which is equipped with a control means for operating the rear wiper for a predetermined period of time if there is a memory in the vehicle, and when the front wiper is operated for a predetermined period of time, When you turn on the Ibnira Silane switch to move the inside of the car, the rear wiper is automatically activated for a short period of time to remove water droplets and dirt that accumulate on the rear window and obstruct visibility, such as the day after driving in the rain. It can be removed automatically and has great safety effects.

[Brief explanation of drawings]

Fig. 2 is an electric circuit diagram of a vehicle steering wheel wiper actuating device according to an embodiment of the present invention, and Fig. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a flow diagram thereof. (Explanation of symbols) 1...Front wiper motor 2...Front wiper switch SW3...Storage means 4.5...Diode 6...Resistor 7...Capacitor 8...Resistor 9... - Erasing means 10... Ibnirasilane switch 12... Timer 12. ...Contact 13...
・Relay 13. ... Contact 14 ... Rear wiper motor touch 15 ... Rear wiper motor i6 ... Control means 17 ... Microprocessor number 1 day ... Operating time pulse generator 19 ... Counter 20 ... - Elapsed time pulse generator 21...Comparison'a 22...Reference value setter.

Claims (1)

[Claims] 1. A memory means for memorizing the operation of the front wiper, an erasing means for erasing the memory at a predetermined time from when the front wiper is stopped, and a rear 1. A rear wiper operating device for a vehicle, comprising: control means for operating a wiper for a predetermined period of time.