JP2800535B2 - Wiper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device used for a vehicle such as an automobile.

[0002]

2. Description of the Related Art As shown in, for example, JP-A-55-4238, a cleaning liquid is sprayed onto a glass surface by a washer device in cooperation with a washer device. Then, a wiper blade is reciprocated several times to wipe the glass surface.

[0003]

Since a low concentration surfactant aqueous solution (hereinafter referred to as a normal cleaning liquid) is exclusively used as the cleaning liquid, it is effective for wiping dust and mud attached to the glass surface. However, a complete wiping effect cannot be expected so much for body fluids and dead bodies of insects that collide with the glass surface during traveling. Therefore, a dedicated cleaning solution that chemically decomposes beeswax, the main component of insects (hereinafter referred to as
Insect body fluids and dead bodies are stuck to the glass surface, but there is a limit to the chemical decomposition of beeswax by the insect-removing cleaning solution. The same wiping effect as when wiping dust or mud is not obtained.

Accordingly, the present invention provides a wiper device capable of effectively wiping insect body fluids and dead bodies attached to a glass surface.

[0005]

In a wiper apparatus having a swingable wiper blade for wiping a glass surface, a cleaning liquid jetting means for selectively jetting a normal cleaning liquid and a cleaning liquid for insect removal onto a glass surface; And heating means for heating the insect-repelling cleaning liquid to a predetermined temperature when the insect-repelling cleaning liquid is sprayed.

In the wiper device according to the second aspect, instead of the heating means in the wiper device according to the first aspect,
A heating means is provided for heating the glass surface to a predetermined temperature before spraying the insect cleaning liquid.

According to a third aspect of the present invention, there is provided a wiper apparatus for changing a pressing force of a wiper blade against a glass surface, and a cleaning solution for selectively jetting a normal cleaning solution and a cleaning solution for insects onto the glass surface. Injecting means, a heating means for heating any of the insect cleaning liquid or the glass surface to a predetermined temperature during injection of the insect cleaning liquid, and operating the pressing force variable means for a predetermined time after the operation of the heating means. Control means for reducing the pressing force of the wiper blade and driving the wiper device for a predetermined time.

[0008]

In the wiper device according to the first aspect, when the cleaning liquid for insect repelling is sprayed onto the glass surface by the cleaning liquid spraying means, the cleaning liquid for repelling insects is, for example, beeswax which is a main component of insects by the heating means. Since it is heated to a temperature equal to or higher than the melting point, the body fluids and dead bodies of the insects attached to the glass surface can be completely chemically decomposed and easily wiped off by the wiper blade.

According to the wiper device of the second aspect, when the cleaning liquid for spraying insects is sprayed onto the glass surface by the cleaning liquid spraying means, the glass surface is previously heated to the predetermined temperature by the heating means. It is possible to promote the chemical decomposition of body fluids and carcasses of insects by a cleaning solution for insects.

Further, according to the wiper device of claim 3,
When the insect-repelling cleaning liquid is sprayed, the insect-repelling cleaning liquid is directly heated to a predetermined temperature, or the glass surface is heated to a predetermined temperature. By reducing and oscillating, the body fluids and dead bodies of insects can be spread thinly on the glass surface to further promote chemical decomposition, and automatic wiping by the wiper blade is performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a wiper device for wiping a surface of a glass 6 such as a windshield of a vehicle, and has a wiper blade 2 slidingly contacting the surface of the glass 6.
The wiper blade 2 is driven by a drive unit 4 driven by a wiper motor 5.
It is connected to the end and wipes the surface of the glass 6 into a substantially fan shape.

Reference numeral 7 denotes a washer device as a cleaning liquid injection means, which includes a washer tank 8 for containing a normal cleaning liquid,
And a washer tank 10 for storing a cleaning solution for collecting insects.

Washer pumps 9 and 11 are attached to the lower portions of the washer tanks 8 and 10, respectively, and the downstream side of the washer pumps 9 and 11 is connected to the injection nozzle 14 through the passages 9a and 11a, the switching valve 12, and the passage 13. Is in communication with The switching valve 12 selectively switches between a normal cleaning liquid and a cleaning liquid for insect removal.
1, the supply path of the cleaning liquid to the injection nozzle 14 is switched.

The heating means 1 is provided in the middle of the passage 13.
5 is provided. As the heating means 15, for example, when a heating wire 16 is routed in the passage 13 as shown in FIG. 2 and the washer pump 11 is driven to inject the cleaning liquid for insect removal from the injection nozzle 14 onto the surface of the glass 6. The heat wire 16
To a predetermined temperature in advance of the insect cleaning liquid, specifically 70 ° C., which is the melting point of beeswax, which is the main component of insects.
The heating is performed to the above temperature.

FIG. 3 shows a control circuit of the wiper motor 5 and washer pumps 9 and 11 described above. Reference numeral 17 denotes a main switch which includes a wiper switch 18 for operating the wiper motor 5 and washer switches 19 and 20 for operating the washer pumps 9 and 11. The wiper switch 18 has an OFF position for stopping the wiper motor 5,
Connect the ground side terminal of the wiper motor 5 to the L (low) side to perform an intermittent low-speed rotation (low-speed swinging of the wiper arm 3), and connect the ground side terminal of the wiper motor 5 to the L side. LO position to perform low-speed rotation
The ground side terminal of the wiper motor 5 is connected to the H (high) side to switch to an HI position where high-speed rotation (high-speed swinging of the wiper arm 3) is performed. Reference numeral 21 denotes an intermittent wiper amplifier for intermittently operating the wiper motor 5 when the wiper switch 18 is switched to the INT position.
And a relay 23 for switching from the side to the terminal b side.
Terminal a is an auto stop switch 5 of the wiper motor 5.
a, and the wiper switch 18 is connected to the IN
O from any of T position, LO position and HI position
When switching to the FF position, the motor drive circuit is opened when the wiper blade 2 swings back and forth once and returns to the storage position.

In this embodiment, a start signal of the washer pumps 9 and 11 by turning on the washer switches 19 and 20 is input to the timer 22 of the intermittent wiper amplifier 21, and when the washer pumps 9 and 11 are driven, an appropriate time delay occurs. The wiper motor 5 is rotated at a low speed for a predetermined period of time to automatically perform the wiping operation of the wiper blade 2 after the cleaning liquid is injected. However, the operation of the washer pumps 9 and 11 and the operation of the wiper motor 5 are performed. Needless to say, it may be performed independently.

The heating wire 16 as the heating means 15 is connected in series with the washer pump 11.

According to the above-described embodiment, when the washer switch 20 is turned on, the washer pump 11 is driven to introduce the cleaning liquid for collecting insects in the washer tank 10 into the passage 13 through the switching valve 12, and the jetting is performed. It is sprayed from the nozzle 14 onto the surface of the glass 6. At this time, the washer pump 1
Since the heating wire 16 is energized simultaneously with the driving of the
The insect cleaning liquid is heated to 70 ° C. or higher before being supplied to the injection nozzle 14. Therefore, the body fluids and dead bodies of the insects attached to the surface of the glass 6 are significantly promoted in chemical decomposition by the high-temperature insect cleaning liquid sprayed from the spray nozzle 14, and the wiper blade reciprocates and swings with an appropriate time delay. Wipe clean by 2.

In the above embodiment, the cleaning liquid for insects is heated to promote the chemical decomposition of the body fluids and dead bodies of insects. The same effect can be obtained by preheating the surface to a temperature equal to or higher than the melting point of the beeswax and spraying a cleaning solution for insects onto this glass 6 surface.

Therefore, the embodiment shown in FIGS.
Further, a heating means 15 for heating the surface to a predetermined temperature, for example, 70 ° C. or more, is provided. In this embodiment, the glass 6 is a laminated glass composed of an inner glass 6a and an outer glass 6b, and a heating wire 16 as a heating means 15 is routed between the inner glass 6a and the outer glass 6b in an appropriate pattern. The heat wire 16 is energized before the washer cleaning liquid is sprayed by driving the washer pump 11, and heats the glass 6 in advance at the above-mentioned temperature for a predetermined time, for example, about 1 minute, until the insect body fluid or dead body becomes sufficiently soft. The washer pump 11 is driven after a lapse of a predetermined time, and sprays a cleaning liquid for insect removal from the spray nozzle 14 to wet the body fluids and dead bodies of the insects which have been sufficiently softened by heating the glass 6, thereby promoting the chemical decomposition thereof. Is done.

FIG. 6 shows a control circuit of the wiper motor 5 and the washer pumps 9 and 11 described above. The same parts as those in FIG. 3 are denoted by the same reference numerals, and only different parts will be described. In this embodiment, an amplifier for driving the washer pump 11 and driving the wiper blade 2 after energizing the heating wire 16 as the heating means 15 21 '. The amplifier 21 'is controlled by a timer 22' and a timer 22 'to close the terminals c and d and open the terminals c and d after a predetermined time, and a relay 23' to open the terminals c and d. And a relay 23 ″ that opens the terminal e side and the terminal f side after opening the terminal d side, and opens the terminal e side and the terminal f side after a predetermined time. The terminal d is connected to the heating wire 16. The terminal f is connected to the washer pump 11.

When the washer switch 20 is turned on, the terminals c and d are closed by the relay 23 'of the amplifier 21' and the heating wire 16 is heated. After a predetermined time, the terminals c and d are opened, the terminals e and f are closed by the relay 23 '', and the washer pump 11 is energized and operated. At the same time, the timer 22 of the amplifier 21 is energized, and the contact is switched from the terminal a to the terminal b by the relay 23, so that the washer pump 9 is driven, and the wiper motor 5 is rotated at a low speed for a predetermined time with an appropriate time delay. .

Also in this embodiment, the wiper blade 2 may be operated independently after the washer pump 11 is operated.

In some cases, in consideration of the temperature drop on the surface of the glass 6 due to the injection of the cleaning liquid for insects, the cleaning liquid for insects may be slightly heated in addition to heating the surface of the glass 6. Good.

FIGS. 7 and 8 show another embodiment in which the surface of the glass 6 is heated. The heating means 15 arranges the heating wire 16 on the glass 6 in an appropriate pattern as in the case of the above embodiment, and heats the surface of the glass 6 to 70 ° C. or more of the melting point of beeswax, which is a main component of insects, by applying electricity. ing.

In the same manner as in the above-mentioned embodiments, the cleaning liquid jetting means 7 selectively switches the normal cleaning liquid and the insect cleaning liquid from the injection nozzle 14 by the switching valve 12 interlocking with the washer pumps 9 and 11. Spray onto glass 6 surface.

The wiper arm 3 of the wiper device 1 includes:
Pressing force variable means 24 for changing the pressing force by a spring (not shown) for pressing the wiper blade 2 against the glass 6 surface
Is provided. As the pressing force varying means 24, for example, a conventionally known mechanism including a combination of a spring and a variable pressing force motor as disclosed in Japanese Patent Laid-Open No. 62-59151 can be used.

The control means 26 controls the operation of the heating means 15, the cleaning liquid jetting means 7 and the wiper device 1.
An input side of the CPU 27 is connected to a switch 19 for ejecting a normal cleaning liquid and a switch 20 for ejecting a cleaning liquid for collecting insects, and a driving circuit 28 for energizing the heating means 15 and an washer pump 9 are connected to the output side. , A drive circuit 30 for driving the washer pump 11, a drive circuit 31 for driving the wiper motor 5, and a drive variable motor 25 of the pressing force variable means 24. Drive circuit 32 is connected.

When the washer switch 19 is turned on, the control means 26 immediately drives the washer pump 9 to inject the ordinary cleaning liquid, and then drives the wiper motor 5 with a slight time delay to perform several times. When the washer switch 20 is turned on, the heating means 28 is operated, and then the press variable motor 25 and the wiper motor 5 of the wiper device 1 are driven, and the washer pump 11 is driven. It has become.

The operation of this embodiment will be described with reference to the timing charts of FIGS.

FIG. 9 shows the operation of wiping and cleaning the surface of the glass 6 with a normal cleaning liquid. When the washer switch 19 is turned on, the drive circuit 29 is turned on in accordance with the program stored in the CPU 27, and the washer pump 9 is turned on. When driven, the ordinary cleaning liquid is injected from the injection nozzle 14 onto the surface of the glass 6. The drive circuit 31 is turned on slightly after the washer pump 9 is driven, and the wiper motor 5 is driven to swing the wiper blade 2 back and forth several times to wipe the glass 6 surface.

FIG. 10 shows a glass 6 made of a cleaning solution for collecting insects.
The wiping and cleaning operation of the surface is shown.

When the washer switch 20 is turned on,
First, the drive circuit 2 according to the control program of the CPU 27
When the heating wire 8 is turned on, the heating wire 16 is energized for a predetermined time, for example, about one minute, to heat the glass 6 surface to 70 ° C. or higher, and to heat the insect body fluid or dead body attached to the glass 6 surface to be sufficiently soft.

When the drive circuit 28 is turned off, the drive circuits 32 and 31 are both turned on at the same time.
5, the pressing force of the wiper blade 2 is reduced, and the wiper motor 5 is driven to swing the wiper blade 2 back and forth once. As a result, the body fluids and dead bodies of the insects adhered to the glass surface 6 are spread thinly to increase the surface area. When one reciprocation of the wiper blade 2 is completed, the drive circuits 32 and 31 are turned off, and the pressing force of the wiper blade 2 is returned to the original state. At the same time, the drive circuit 30 is turned on, the washer pump 11 is driven, and the cleaning liquid for insects is sprayed from the spray nozzle 14 onto the glass 6 surface.

When the ejection of the cleaning liquid is completed, the drive circuit 31 is turned on, the wiper motor 5 is driven to swing the wiper blade 2 back and forth several times, and the body fluids and dead bodies of the insects are washed off from the glass 6 surface. . During the wiping operation of the wiper blade 2, the drive circuit 29 is turned on, the washer pump 9 is driven, the normal cleaning liquid is jetted from the injection nozzle 14, and the cleaning liquid for insects is washed out from the surface of the glass 6. The wiper blade 2 wipes the surface of the glass 6 to complete the operation.

In this embodiment, the washer pump 1
Although the wiper motor 5 is not driven when the motor 1 is driven, the wiper motor 5 may be driven to swing the wiper blade 2 also at this time. In the insect removal operation, the surface of the glass 6 is heated in advance. However, the cleaning liquid for insect removal is heated to a predetermined temperature, and after the injection, the pressing force varying means 24 is operated to activate the insect adhesion on the surface of the glass 6. The insects may be spread thinly so as to be sufficiently moistened, and thereafter, the attached insects are washed off, the washing solution for insects is washed off, and then the wiping operation is performed.

[0038]

As described above, according to the present invention, by washing the insect cleaning liquid or the glass surface to a predetermined temperature, the body fluids and dead bodies of the insects attached to the glass surface are sufficiently softened, Chemical decomposition by the cleaning solution for collecting can be promoted, so that body fluids and dead bodies of insects stuck to the glass surface can be easily wiped off, and the glass surface can be cleaned greatly. Having.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a first embodiment of the present invention.

FIG. 2 is a schematic explanatory view of a heating means of the embodiment.

FIG. 3 is a control circuit diagram of the embodiment.

FIG. 4 is a schematic explanatory view showing a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a control circuit diagram of the embodiment.

FIG. 7 is a schematic explanatory view showing a third embodiment of the present invention.

FIG. 8 is a circuit diagram of control means of the embodiment.

FIG. 9 is an operation time chart of the embodiment.

FIG. 10 is an operation time chart of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wiper apparatus, 2 ... Wiper blade, 6 ... Glass, 7 ... Cleaning liquid injection means, 15 ... Heating means, 24 ... Pressing force variable means, 26 ... Control means.

Claims (3)

(57) [Claims] 1. A wiper device having a swingable wiper blade for wiping a glass surface, a cleaning liquid jetting means for selectively jetting a normal cleaning liquid and an insect cleaning liquid onto a glass surface, A heating means for heating the insect cleaning liquid to a predetermined temperature when the cleaning liquid is sprayed. 2. A wiper device having a swingable wiper blade for wiping a glass surface, wherein a cleaning liquid jetting means for selectively jetting a normal cleaning liquid and a cleaning liquid for insect repelling onto the glass surface, A heating device for heating a glass surface to a predetermined temperature before spraying a cleaning liquid. 3. A wiper device having a swingable wiper blade for wiping a glass surface, wherein a pressing force variable means for changing a pressing force of the wiper blade against the glass surface, a normal cleaning solution and a cleaning solution for insect removal are provided. Cleaning liquid spraying means for selectively spraying on the glass surface, heating means for heating either the insect cleaning liquid or the glass surface to a predetermined temperature when spraying insect cleaning liquid, and pressing after the heating means is activated. Control means for operating the pressure varying means for a predetermined time to reduce the pressing force of the wiper blade and driving the wiper apparatus for a predetermined time.