JPS59171739A - Automatic wiper apparatus - Google Patents

Abstract

PURPOSE:To improve the driving operation performance and safety by releasing the active state of a wiper driving part when the next detection signal is not output within a certain time after the time point when a raindrop sensor stops outputting detection signal and by alarming said release. CONSTITUTION:When a manual switch 6 is pressed, a microcomputer 7a sets a wiper driving part 7 into active state and operates an alarm means 8 and turns-ON the indication lamp L of said means. Further, the microcomputer 7a sets a raindrop sensor 3 into active state. When a detection signal is output from the raindrop sensor 3, the microcomputer 7a operates a wiper driving part 4 to operate a wiper. When the next signal is not output within the time set on a timer which is memorized into the ROM of the microcomputer 7a, the microcomputer 7a releases the active state of the wiper driving part 4. In other words, automatic wiper mode is released. In this case, the microcomputer 7 puts out the indication lamp L after putting ON and OFF the lamp several times and sets the raindrop sensor 3 into inactive state.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic wiper device that detects water droplets adhering to the surface of a window glass during rain and automatically operates a wiper.

As a conventional automatic wiper device, there is, for example, one shown in Figure @1. This automatic wiper device 1 is activated by the operation of a manual switch 2 (a power switch), a raindrop sensor 3 that detects water droplets on the window glass surface, and a manual switch 2 installed in a position that can be easily operated by the driver. and a wiper drive section 4 that operates the wiper in response to a detection signal from a raindrop sensor 3.

However, in such a conventional automatic wiper device 1, when the manual switch 2 is activated and the wiper drive unit 4 is in the active state, the wiper drive unit 4 is activated according to the presence or absence of the detection signal from the l+l-I sting sensor 3. The drive unit automatically operates
Since the configuration was such that it was almost inoperable, if you forgot to turn off the manual switch 2, the raindrop sensor 3 would not work when it is not raining.
When a detection signal is output, for example when the vehicle is put into a car wash, the wiper will automatically operate and the brushes of the car wash will wrap around the wiper blade, resulting in
There was a risk that the wiper arm and car wash machine would be damaged.

The present invention has been made in view of these conventional problems.In particular, when the next detection signal is not output within a certain period of time from the point at which the output of the detection signal stops, the manual switch is activated. The above-mentioned problems can be solved by providing a control means for completely canceling the active state of the drive unit during operation, and a means for warning the cancellation of the active state, and the driving operability of the vehicle etc. can be improved. The objective is to provide an automatic wiper device that can fully improve safety.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The automatic winnowing device according to the present invention will be explained below based on all the drawings.

FIG. 2 is a block diagram showing the overall configuration of an automatic wino (device) according to the present invention. In FIG. 2, the same parts as those shown in FIG. 1 are given the same reference numerals.

In the self-excited wiper device 5, the manual switch 6 is configured as a trigger switch, and its operation generates a trigger signal. Reference numeral 7 denotes a control means which activates the raindrop sensor 3 and issues an activation signal to the wiper drive unit 4 when receiving a trigger signal from the manual switch 6. When the wiper drive section 4 is in the active state (automatic winding mode), the raindrop sensor 3 detects water droplets +J landing on the window glass surface and outputs a detection beep sound. 4 outputs a wiper activation signal, which activates the υ wiper. Raindrop sensor 3
If the next detection signal is not output within a certain period of time from when the output of the detection signal from the wiper drive unit 4 stops, the control means 7 issues a disabling signal to the wiper drive unit 4, thereby disabling the wiper drive unit 4. Release the active state. Reference numeral 8 denotes a warning means which receives the ambiguous information signal from the control means 7 and notifies the wiper drive section 4 of the activation state to be released.

Embodiments of the automatic wiper device according to the present invention will be described below.

FIG. 3 is a block diagram of a first embodiment of the automatic one-neuver device according to the present invention. In FIG. 3, parts corresponding to those shown in FIG. 2 are given the same reference numerals.

In the automatic wiper device 9, SWl is a switch that constitutes the manual switch 6 together with a resistor R1, and this button operation V? cj, a trigger pulse is generated. 7
A is a microcomputer corresponding to the control means in FIG. , outputs an activation signal and a wiper operation signal to the wiper drive unit 4, and outputs an activation signal and a wiper operation signal to the wiper drive unit 4, and outputs an activation signal and a wiper operation signal to the alarm means 8 according to a mode described later! Outputs a reception signal. The alarm means 8 in this embodiment includes a relay 8a and a display rung L provided at a location easily visible to the driver. Note that 10B is a power source (battery).

Next, the operation f of the first embodiment will be explained with reference to the time chart shown in FIG. 4 and the flow chart shown in FIG.

First, when the manual switch 6 is pressed, as shown in FIG.
As shown in FIG. 3, a trigger pulse is generated and is applied to the human power port of the microcomputer 7a. Accordingly, the microcomputer 7a outputs an activation signal to the automatic drive s4 through the output port 1 to make it fully active, and at the same time outputs an activation signal to the alarm means 8 as shown in FIG. 4 (q). All 'rJi alarm signals at H level are output.The relay 8a of the weight alarm means 8 is turned on due to this H level alarm signal, and this causes the ρ relay switch SW2 to close JyX, so that the lamp is turned on. The microcomputer 7a turns on.Moreover, when the microcomputer 7a receives the trigger pulse, it supplies the raindrop sensor activation signal to the raindrop sensor 3 as shown in FIG. 4(D). When the wiper drive unit 4 is in the active state, the 1st and 7th direction sensors 3
When the microcomputer 7a detects the adhesion of water droplets on the window glass and generates a detection signal (H level) as shown in FIG. This causes the wiper drive section 4 to fully operate the wiper.

When the wiper drive section 4 is in the active state, if the next detection signal is not output within the timer setting time τ written in advance in the aoM (read-only memory) of the microcomputer 7a (see FIG. 4(B)). , the microcomputer 7a issues a disabling signal to the drive unit 4 to release the active state of the drive unit 4, that is, cancels the automatic wiper mode. As shown in FIG. 4(D), an alarm signal is supplied to the alarm means 8, which repeats H level and L level several times at an interval of 8 degrees per second.
By the on/off operation of the relay 83, the display rung L
flashes several times and then disappears. When the indicator lamp L goes out, the microcomputer 7a sets the raindrop sensor activation signal sound L level to disable the raindrop sensor 3 until the manual switch 6 is pressed again and a trigger pulse is not generated. The inactive state of the wiper drive unit 4 is maintained. Note that the timer setting time τ is set to be less than or equal to the time (several minutes to several tens of minutes) required for water droplets attached to the surface of the window glass to dry naturally.

This is because in 1, where the water droplets dry naturally, dust etc. are not noticeable.
Therefore, it is considered that the car is not washed completely.

In this way, if the detection signal Miffi from the raindrop sensor 3 is not output within a certain period of time τ, the active state of the wiper drive s3 is automatically released, so the wiper drive s3 is already activated by the time the car is put into the car wash. Since the wiper drive unit 3 is in a disabled state, the wiper drive unit 3 does not operate and the brush of the car wash machine becomes entangled with the wiper blade, thus preventing damage to the wiper arm and the car wash machine. . Furthermore, when the active state of the wiper drive section 3 is canceled, the indicator lamp L of the alarm means 8 flashes to notify the driver of the situation, so the danger of not being in the automatic wiper mode remains unresolved. It has the advantage of being able to solve the problem and improve the driving operability and safety of vehicles and the like.

Next, a second embodiment of the automatic wiper device according to the present invention will be summarized.
This will be explained based on the diagram. In FIG. 6, the same parts as those shown in FIG. 3 are designated by the same reference numerals.

The automatic wiper device 1o of the second embodiment differs from that of the first embodiment in that, as is clear from FIG. 6, a voice synthesizer s'l is provided in place of the display rung L of the alarm means 8. It is in. This speech synthesizer S selects and outputs a synthesized speech including a general sound meeting according to the pulse time width of its input pulse.

Each operation of the second embodiment is similar to that of the first embodiment, but when the wiper drive section 4 is in the active state and the detection signal from the raindrop sensor 3 is output for a certain period of time τ or more, the micro The computer 7a supplies a deactivation signal to the wiper drive 4 to deactivate the wiper drive 4. At the same time, the microcomputer 7a supplies all H level alarm signals with a certain time range to the alarm means 8.

Thereby, a relay 8 of the reporting means 8. Since I is not on and its relay switch sw2 is closed, an input pulse with a certain pulse time width is input to the speech synthesizer S.
As a result, the speech synthesizer S outputs synthesized speech including the alarm sound.

As described above, according to the second embodiment, it is possible to notify the driver that the active state of the wiper drive unit 4 has been released in the form of a synthesized voice that includes an alarm sound in all rooms. Compared to the example, the idiosyncratic nature of the announcement is greater. Incidentally, it is also possible to have an S configuration in which all of the first and second evening embodiments are combined and a voice sweetening device s2 is provided together with an indicator lamp L.

As explained above, the automatic wiper device according to the present invention includes a raindrop sensor that detects water droplet adhesion on the surface of a window glass and outputs a full detection signal, and an activation signal that is generated by operating a manual switch. a wiper drive section that is in a working state and is activated by a detection signal from the raindrop sensor; and if the next detection signal is not output within one hour from the time when the output of the detection signal is stopped, the wiper drive section The structure consists of a control means for completely canceling the active state, and a means for issuing an alarm for canceling the active state, so that the wiper is automatically activated during car washing, etc., and the wiper arm or car wash machine is damaged. You can eliminate the inconvenience of storing it away,
Furthermore, after the wiper drive unit 4 has been automatically disabled, if it is likely to rain again, the alarm means will notify 1% that the wiper drive unit has been disabled. This eliminates the unreasonable situation where the driver only learns of the wiper drive unit's inoperable state after the forward visibility is obstructed by rain.
Therefore, it has the special feature of being able to improve driving operability and safety.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a conventional automatic wiper device, FIG. 2 is a block diagram showing the overall configuration of an automatic wiper device according to the present invention, and FIG. 3 is a block diagram of a first embodiment of the present invention. FIG. 4 is a time chart of each signal for explaining the operation of the same embodiment, FIG. 5 is a flow chart for explaining the operation of the same embodiment, and FIG. 6 is a second embodiment of the present invention. This is a book diagram. 3...KLm sensor, 4...wiper drive unit, 5,9゜10...automatic wiper device, 6...manual switch (trigger switch), 7...control means, 7a...micro Computer, 8... Alarm means, SWl... Bush switch, 1... Resistor, 8a... Relay, SW
2...Relay switch, 10B...Power source (battery),
L...display hump, S...speech synthesizer.・-209- Figure 6 1゜

Claims (1)

[Claims] A raindrop sensor that outputs a detection number 4i after detecting water adhesion on the window glass surface and an activation signal generated by the activation of a manual switch, and is activated by a detection signal from the raindrop sensor. a wiper drive unit that operates the wiper; an open side j means that releases the active state of the wiper drive unit if the next detection signal is not output within a certain period of time from the point at which the output of No. N is stopped; an automatic alarm device comprising: means for warning the cancellation of the active state;