JPS61110653A - Air windshield wiper for automobile - Google Patents

Abstract

PURPOSE:To bring an air wiper effect into full play even in a running state of either at low or high speed, a by applying a double air curtain consisting of pressure air to a windshield, while making a jetting direction of the second air curtain variable according to a car speed. CONSTITUTION:For operating a windshield wiper in time of rainfall, if a switch is turned on, at the first step, a motor 21 stops after rotation for a given time in a stand-by direction so that a pressing part 23 moves upward, and a protective cover 14 rotates, opening each injection hole 12, while a frame 24 moves upward whereby a movable pipe 9 and floating plate 28 are projected to the top of a bonnet 35, and the pipe 9 also rotates whereby each injection hole 16 turns on the slant, assuming a posture of standing by. Next, the switch operates to feed pipes 4 and 5 with pressure air at the second step in time of operation finish, therefore pressure air is jetted out of these injection holes 12 and 16 of pipes 8 and 9, forming double air curtains K1 and K2 there, and when this pressure air passes through a heating unit 10, hot air is jetted out of the injection hole 12. And, according to an increase of a car speed, an injection position of the pipe 9 is moved to an upper part, thus an effect of the curtain K2 is kept against wind pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an air wiper for securing a front view of a windshield from mountain water that flies at a car while driving in the rain.

(Prior art) When driving a car during rain, apply Freon 1 to M' on the glass.
It is very important to quickly and completely remove water droplets from the vehicle in order to drive a car safely. For this reason, in the past, an arbitrary number of wipers were disposed on the windshield, and the water droplets were wiped away by pressing and rotating the wiper plate of the wipers.

However, this method has the following problems.

(1) Freon 1 - The water droplets attached to the glass cannot be completely wiped away, and the water droplets that fly right after wiping stick again and the wiping effect is not improved, making it difficult to see the front. Also, when driving at night, this residual The headlights of oncoming vehicles reflected diffusely on the water droplets, making it difficult to see the road ahead, which was the biggest factor in accidents during nighttime rain.

(2) The structure makes it difficult to wipe off water droplets from the entire surface of the windshield, leaving a residue after wiping.As a result, it is difficult to see the wiping residue when it rains, and furthermore, when it rains, the muddy water that has landed on the wiping residue dries. The muddy surface obstructed visibility and created blind spots, impeding safe driving.

(3) Due to severe conditions such as a rise in temperature due to the blazing sun in summer or a drop in temperature in winter, the physical properties of the rubber material of the wiper plate were significantly deteriorated, and the wiping performance decreased in a short period of time. As a result, some portions remain unwiped, or the wiper rubber must be replaced frequently, which is inconvenient.

(4) When the wiper plate rotates under pressure, mud, sand, etc. that fly up from the road cause scratches on the glass surface, reducing the visibility of the windshield.

(Object of the invention) Therefore, this invention solves all the above-mentioned drawbacks,
To provide an air wiper configured to form an air curtain using pressurized air and cover the entire windshield with this air curtain.

(Structure of the Invention) The present invention provides an air wiper for an automobile that forms an air curtain by injecting pressurized air from a fixed vibrator and a movable vibrator that are arranged horizontally in parallel at the lower end of a windshield. The fixed vibrator 8 is arranged in the vicinity of the windshield, and an injection hole 12 is provided on its outer peripheral surface through which pressurized air flows along the windshield. A vehicle speed detection device is provided with injection holes 16 along the longitudinal direction on the circumferential surface so as to be rotatable according to the vehicle speed, and the injection angle of the pressurized air is raised upward as the 8-light row state is achieved. It is characterized by having a means.

(Effects of the Invention) According to the air wiper for automobiles of the present invention, the following various effects can be expected.

(1) Since the front and rear double air curtains cover the entire surface of the windshield, the windshield remains in the same condition as it is on a sunny day, allowing you to see the front in the best possible condition regardless of rain.

Furthermore, since there is no muddy water attached, the muddy water will not dry up and make visibility impossible even after rain.

(2) The air curtain is double-layered, so even if rainwater enters from the front air curtain, the pressurized air from the fixed vibrator will instantly blow away the water droplets to the outside, making it visible to the front. It does not become an obstacle.

(3) The vehicle speed detection means detects the speed of the vehicle, and as the speed increases, the movable vibrator rises and rotates forward at the same time, and the injection hole is rotated upward to direct pressurized air upward. Inject. Therefore, when driving at high speeds under strong wind pressure, the jetting direction of the front air curtain is directed directly upwards, so the performance of the air curtain is less likely to deteriorate, and water droplets do not fly to the windshield.

(4) Since there is no need for a wiper plate that rotates in pressure contact with the windshield, scratches on the glass surface caused by wiper play 1 can be prevented, and the visibility of the windshield will not deteriorate.

(Example of the invention) An embodiment of this invention will be described in detail below based on the drawings.

The compressor 1 of the air wiper has a known structure and supplies pressurized air to the air tank 2, which is generated by being rotated by a boob attached to the output shaft of the engine via an electromagnetic clutch.

The above-mentioned air tank 2 detects the internal pressure with the installed pressure sensor, and based on the detection, the above-mentioned electromagnetic clutch is connected and connected to control the rotation of the above-mentioned compressor 1, and the inside is pressurized to a specified pressure. While storing air, pressurized air is sent via via 4.5 by opening and closing of a solenoid valve 3 controlled from the driver's seat to a fixed vibrator located in the wiper housing 7 at the lower end of the windshield 6. 8 and the movable vibrator 9, or only one of them. In addition, a branch route is provided in the middle of the pressure feed route of the above-mentioned pressure feed vibrator 4, and a solenoid valve 3' that is controlled from the driver's seat is provided at the branch point. , a heating unit 10 configured to heat pressurized air using engine exhaust heat is provided.

The above-mentioned fixed vibrator 8 is held parallel to the lower edge of the windshield 6 on the windshield 6 side of the wiper storage section 7 and fixed to the frame 11, and is configured to send pressurized air or hot air supplied from the above-mentioned pressure-feeding vibrator 4. The liquid is ejected along the windshield 6 from a plurality of injection holes 12 formed linearly on the outer peripheral surface.

Further, a protective cover 14 is disposed on the outer circumferential surface of the protective cover 14, which is rotatably formed in a concentric circle and has both ends pivoted by shafts 13.13.

In addition, the above-mentioned fixed vibrator 8 mixes and injects washer fluid from the above-mentioned jet hole 12 along with pressurized air or hot air if necessary, so it can be operated by a switch installed in the vehicle interior. A washer valve 15 is provided so that rasher liquid can be supplied to a washer tank (not shown).

The above-mentioned injection hole 12 is formed in a substantially rectangular shape, and has a V-shaped opening as shown in FIG. 1 is formed into a first air curtain that matches the pressurized air injected from above and covers the entire surface of the windshield 6 without any gaps.

Further, the V-shape is formed at a somewhat acute angle on the outside of the openings at both ends to prevent both ends of the air curtain from diffusing outward. Further, its opening area is made much smaller than the opening area of the injection hole 16 of the movable vibrator 9, which will be described later, in order to save the capacity of the compressor 1 described above.

The above-mentioned protective cover 14 has an arc-shaped gear 17 fixed to its approximate center, and a gear 1 on the outer periphery of the opening/closing tool 18 is attached to this gear 17.
9 are interlocked. Therefore, when the opening/closing tool 18 rotates in the storage direction, the protective cover 14 rotates clockwise and covers the upper surface of the injection hole 12, and when the opening/closing tool 18 rotates in the operating direction, it rotates counterclockwise. rotates to the injection hole 12.
Open the top surface of...

The aforementioned opening/closing tool 18 is pivotally connected to a rotating shaft 2o that is constructed between a pair of support plates 30 and 30 that are erected on the aforementioned frame 11. Further, the aforementioned gear 19 is formed on the outer periphery, and a pressing portion 23 that protrudes forward is provided, and the gear 22 of the opening/closing motor 21 is meshed with the gear 19 on the outer periphery, and the rotation is controlled by the opening/closing motor 21. Ru.

That is, when the opening/closing motor 21 rotates in the storage direction, it rotates counterclockwise, and this rotation rotates the aforementioned protective cover 14 clockwise, and at the same time, the aforementioned movable vibrator 9 is pressed by the pressing portion 23 at its tip. The movable frame 24 supporting the movable vibrator 9 is pushed down against the biasing force of the spring 25 to hold the movable vibrator 9 in the storage position.

The aforementioned movable frame 24 has bearings 26, 26 on both sides.
A support shaft 27.27 is formed in a substantially U-shape and stands at an inclined angle rearward from the upper surface of the frame 11 mentioned above.
The springs 25 and 25 are fitted into the support shafts 27 and 27 so as to be slidable up and down.

These bearings 26, 26 and support shafts 27 and 27 are subjected to anti-friction treatment such as Teflon coating in order to reduce sliding resistance.

Further, above each of the bearings 26, 26, floating plates 28, 28 are installed as vehicle speed detecting means for moving the movable vibrator 9 up and down using wind pressure.

The floating plate 28.28 is formed into a dish shape with covers projecting forward on three sides except for the lower part, and is mounted on support pieces 31.31 provided on the upper end of the movable frame 24 and projecting backward. The movable vibrator 9 is mounted between the supporting pieces 31 and 31 with one end connected to the shaft 32.
The other is rotatably supported by an airtight shaft 31□3.

Further, a shielding plate 34 having approximately the same length as the movable vibrator 9 is provided in front of the movable vibrator 9, and both ends are fixed to the aforementioned movable frame 24.24. This prevents the air from flowing backward and being sprayed upward from the injection hole 16 of the movable vibrator 9 together with pressurized air in the form of a mist.

The above-mentioned airtight shaft 33 is formed to have a hollow shape penetrating through the inside of the shaft, and its connecting portion is kept airtight with a packing etc., and is connected to the above-mentioned pressure-feeding vibe 5 to supply pressurized air into the above-mentioned movable vibe 9. .

The above-mentioned movable vibrator 9 has injection holes 16 formed in the same manner as the injection holes 12 of the above-mentioned fixed vibrator 8 on its outer circumferential surface in a straight line in the length direction, so that the pressurized air supplied can be used to 2 is formed in a second air curtain that covers the front surface of the windshield 6 without any gaps.

The above-mentioned support piece 31 has a gear 37 rotatably attached to its rear end, and this gear 37 meshes with gears 38 formed on both sides of the outer peripheral surface of the above-mentioned movable pipe 9 at the front, and the above-mentioned gear at the rear. It has the same inclination angle as the support shaft 27, and meshes with a hook 39 fixed to the frame 11 described above. Therefore, in the retracted position where the movable frame 24 is pressed down by the pressing portion 23 of the opening/closing tool 18 against the biasing force of the spring 25, the movable vibrator 9 is rotated clockwise, and in this state, the injection holes 16 and ... is located diagonally downward.

Further, when the movable frame 24 moves upward, the gear 37 is rotated by the rack 39 due to this upward movement, and this rotation causes the movable vibrator 9 to rotate counterclockwise. Therefore, the injection holes 16 are rotated counterclockwise in proportion to the upward movement of the movable frame 24.

The stored state of the air wiper configured in this way is normally carried out when the opening/closing tool 18 is rotated in the opposite direction H1 as shown in FIG. The upper surface of the injection hole 12 of No. 8 is covered. At the same time, the movable frame 2Ill is pushed down by the pressing portion 23 to its lower limit of movement against the biasing force of the spring 25, and this pushing causes the movable vibrator 9 to rotate clockwise.

At this time, the injection holes 16... face obliquely downward, so both the injection holes 12..., 1 of the fixed and movable vibes 8, 9
6 is prevented from clogging due to adhesion of sand and mud during driving, and furthermore prevents freezing due to snow accumulation, frost, rain, etc. during the winter. Since the floating plates 28.28 are recessed to the same level as the bonnet 35, the floating plates 28.28.
28 is not affected by wind pressure when driving on a clear day.

When operating the air wiper during rain, when the wiper switch on the driver's seat is turned ON, the wiper switch rotates the opening/closing motor 21 in the standby direction, that is, counterclockwise, for a fixed period of time in the first stage of operation, and then stops rotating. Stop. Therefore, the opening/closing tool 18 rotates clockwise, and the pressing portion 23 that was pushing down the movable frame 24 moves upward.

Therefore, as shown in FIG. 6, the protective cover 14 of the fixed vibrator 8 rotates counterclockwise to open the upper surface of the injection hole 12 . As a result of this upward movement, the movable vibrator 9 and the floating plate 28.28 protrude to the upper surface of the bonnet 35, and the movable vibrator 9 also rotates counterclockwise, with its injection holes 16 facing diagonally. state.

The wiper switch then opens the solenoid valve 3 in the second stage at the end of its operation to supply pressurized air to the pressure-feeding vibrator 4.5. For this reason, pressurized air is injected from the injection holes 12 of the fixed vibrator 4 and the RN injection holes 16 of the movable vibrator 9, and the double air curtain is filled with 1. 2 is formed. When the solenoid valve 3' is actuated and the pressurized air passes through the branch path provided with the heating unit 10 of the pressure-feeding vibrator 4,
Hot air is jetted from the jet hole 12 of the fixed vibrator 4.

Therefore, water droplets attached to the windshield 6 are instantly blown away by the pressurized air from the fixed vibrator 8, and newly falling rainwater is blown away by the air curtain 2, so that the windshield 6 remains the same as on a sunny day. state.

When the pressurized air is heated by the heating unit 10, it injects hot air, which prevents snow accumulation, frost, etc. when parking on the street at night during the severe cold season.
When the surface of the windshield 6'FQ freezes due to rain or the like, it is instantly thawed, and there is no need to apply heat or moisture as in the conventional case.

Furthermore, if the car is driven in a standby state with the floating plate 28.28 protruding from the hood surface, the floating plate 28.28 receives wind pressure from the front and moves upward in proportion to the strength of the wind pressure.

With this upward movement, the movable vibrator 9 also moves upward together with the movable frame 24, and the injection holes 16... are rotated diagonally upward as shown in FIG. 8 from above. Therefore, the second air curtain 2 is deformed from the ejection state shown by the dashed line in FIG. 9 to an angle substantially similar to the standby state shown by the solid line under the wind pressure. In other words, by moving the injection position of the movable vibrator 9 upward in response to an increase in vehicle speed and by making the injection angle closer to vertical, the effect of 2 on the second air curtain due to wind pressure is prevented from decreasing. .

Also, when it rains and you want to store the air wiper in the storage position, turn the wiper switch OFF and the wiper switch will operate in the reverse order of when it is ON.
is closed and the supply of pressurized air to the pressure-feeding vibrator 4°5 is stopped. Furthermore, in the second stage of the wiper switch's operation, the opening/closing motor 21 is rotated in the storage direction for a predetermined period of time, and then the rotation is stopped.

Therefore, the opening/closing tool 18 rotates counterclockwise and the suppressing portion 23 moves downward. At the same time, the protective cover 14 is on! ! It rotates in one direction and covers the negative side of the injection hole 12. In addition, the movable frame 24 is attached to the pressing part 23 of the opening/closing tool 18.
It is pushed down to the storage position against the urging force of 5. By pressing down the suppressing part 23, the movable vibrator 9 and the floating plate 2
8. 28 is retracted to approximately the same level as the bonnet 35, and the movable vibrator 9 is rotated clockwise so that the injection hole 16 is directed diagonally downward, returning to the original storage state as shown in FIG. Return to

In addition, it is possible to travel with only 1 in the first air curtain during light rain (5, etc.). In this case, operate the solenoid valve 3 inside the vehicle to send pressurized air only from the pressure-feeding vibrator 4 to the fixed vibrator 8. It can be done.

In the above embodiment, in order to send hot air to the fixed vibrator 8,
Although the case has been described in which the heating unit 10 is provided using exhaust gas heat, engine cooling heat may also be used.
Alternatively, purified exhaust gas may be introduced.

As explained above, in the present invention, a double air curtain is used, and the blowing direction of the second air curtain is made variable according to the vehicle speed, so that the effect as a perfect air wiper can be achieved in both high-speed and low-speed driving conditions. I can demonstrate it.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the entire car, Figure 2 is a perspective view of the entire air wiper, Figure 3 is a plan view of the air wiper, Figure 4 is a vertical sectional view of the fixed vibrator, Figures 5 to 7 are FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 3, FIG. 5 is a non-operating position, FIG. 6 is a standby position, FIG. 7 is a sectional view of an operating position, and FIG. 8 is a sectional view of the air curtain in a standby position. Fig. 9 is a side view showing the injection angle of the air curtain in the operating position. 6... Windshield 8... Fixed vibe 9...
・Movable vibe 12...Injection hole 16...Injection hole 28...1 on the floating plate...1 on the first air curtain 2...2nd air curtain

Claims (1)

[Claims] 1. Air curtains (K) and (K2) are created by injecting pressurized air from a fixed pipe (8) and a movable pipe (9) that are arranged in parallel on the front surface of the lower end of the windshield (6). The fixed pipe (8) is arranged in the vicinity of the windshield, the outer peripheral surface thereof is provided with injection holes (12) through which pressurized air flows along the windshield, and the movable The pipe (9) is located in the front part of the fixed pipe (8), and has an injection hole (16) on its circumferential surface along the longitudinal direction and is configured to be rotatable according to the vehicle speed, so that the vehicle can run at high speed. An air wiper for an automobile, characterized in that it is provided with vehicle speed detection means for increasing the injection angle of pressurized air upward.