KR20190021831A - Wiper equipment - Google Patents

Abstract

The present invention relates to a wiper wiping a windshield glass of an automobile, and more specifically, to a wiper apparatus including: a blade; an elasticity member supporting the blade; a cover unit protecting the elasticity member and including a chamber unit therein; an adapter positioned on an external surface of the cover unit; and a switch valve coupled to the inside of the adapter and including a pressure sensing unit on an external surface, wherein the pressure sensing unit includes a first pressure button positioned on a first position of the switch valve and a second pressure button positioned on a second position of the switch valve, thereby wiping off the dust and the pollutant of rain water which are attached to an external surface of the windshield glass of the automobile to secure the front visibility of a driver and to safely operate the automobile.

Description

WIPER DEVICE {WIPER EQUIPMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper for wiping a windshield glass of an automobile. More particularly, the present invention relates to a wiper for wiping a windshield glass of an automobile, To a wiper device.

For a driver who drives a vehicle, it is difficult to secure a forward view when snow or rain comes in accordance with a change in the weather outside the vehicle, which may increase the possibility of an accident. Accordingly, in order to secure the front watch for safe driving, the driver can operate the wiper located on the outer surface of the windshield glass of the vehicle to wipe out dust and dirt on the windshield glass.

On the other hand, in addition to the fact that the front view is not ensured by the weather phenomenon, dust or the like in the air may fall down on the windshield glass and a view can not be secured. However, if the glass surface is dry and the wiper is wiped off, the dust particles passing through the surface of the glass window will sweep away, causing scratches or fouling, causing the front view It may cause difficulties in securing the Therefore, contaminants on the outer surface of the windshield glass can be removed by spraying the washer liquid through the injection nozzle incorporated in the vehicle bonnet or the wiper.

However, the method of spraying the washer liquid onto the windshield glass through the injection nozzle provided in the engine hood is affected by the running wind of the vehicle, so that the washer liquid is scattered around during the spraying process and is discharged from the outside of the windshield glass, .

To solve this problem, a wiping direction sensitive washer fluid injection direction control device may be proposed. In the prior art, the washer liquid injection nozzles are provided on both sides of the wiper device to selectively open the spray nozzles located in the advancing direction in accordance with the operation direction of the wiper device, to direct the washer liquid to the surface of the windshield glass By spraying, the minimum spraying liquid can be injected and the driver's visual field blurring can be minimized.

However, as a means for spraying the washer liquid selectively in accordance with the operation direction, gears and motors having a complicated structure are required, and since the injection device considering the spray direction is constituted, the cost can be greatly increased due to the complexity due to the structure , The result is that the washer liquid spreads over the entire movement trajectory of the wiper blade, thereby making it impossible to solve the problem of making the driver's watch instantaneously worse.

In addition, a washer liquid transfer passage is formed between the two wiper blades, a plurality of nozzle holes are formed along the washer liquid transfer passage, and the washer liquid introduced into the washer liquid transfer passage through the washer liquid supply line flows along the washer liquid transfer passage, It is possible to provide a wiper device for a motor vehicle capable of spraying a washer liquid into a space between both side blades through the wiper blade.

The above technique can reduce the loss of the washer liquid because the washer liquid sprayed in a state of being trapped between the two blades is not likely to scatter the washer liquid. In addition, there is an advantage that the windshield glass does not spread over the entire outer surface of the windshield glass, so that it does not disturb the driver's view. However, since the blades belonging to the consumables are composed of a plurality of blades, maintenance cost may increase and the weight of the wiper device There is a disadvantage that the performance of the power system must be increased.

Korean Patent Publication No. 10-2001-0093530

In order to solve the above problems, the present invention can provide a driver's convenience by providing a wiper which is wiped off immediately after spraying so as not to waste the washer liquid sprayed on the windshield glass through a simple mechanical system or hinder the view of the driver.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a wiper device including a blade, an elastic member for supporting the blade, a cover portion protecting the elastic member and including a chamber portion therein, And a switch valve coupled to the inside of the adapter and including a pressure sensing portion on an outer surface thereof, wherein the pressure sensing portion includes a first pressure button located in a first direction of the switch valve and a second pressure button located in a second direction of the switch valve And a second pressure button for pressing the second pressure button.

The chamber portion may also include a first chamber located in a first direction of the adapter, and a second chamber located in a second direction of the adapter.

Further, the chamber part may further include a plurality of injection nozzles passing through the inner and outer surfaces.

The wiper arm may include a washer pipe which is a passage of the washer fluid and an eddy filter which is located inside the washer pipe and forms a plurality of voids, have.

The apparatus may further include a heating element located inside the cover part and heating the plurality of chamber parts.

Further, the switch valve further includes a valve pipe portion located inside and connected to the chamber portion, wherein the valve pipe includes a first valve pipe positioned in a first direction and a second valve pipe positioned in a second direction, .

Other specific details of the invention are included in the detailed description and drawings.

The wiper according to the embodiment of the present invention can suppress the additional loss of the washer liquid due to scattering of the washer liquid because the washer liquid is sprayed close to the blade portion when the wiper is operated.

Further, it is possible to solve the difficulty of securing the driver's view due to scattering of the washer liquid.

The effects according to the present invention are not limited to the contents exemplified above, and more various effects are included in this specification.

1 is a perspective view showing a wiper apparatus according to the present invention.
2 is a perspective view illustrating a wiper according to an embodiment of the present invention.
3 is a plan view of a fixing member according to an embodiment of the present invention.
4 is a cross-sectional view of a fixing member cut along the line AA 'of the fixing member according to an embodiment of the present invention.
5A to 5C are conceptual diagrams of a switch valve according to an embodiment of the present invention.
6 is a cross-sectional view of a washer pipe according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. &Quot; and / or "include each and every combination of one or more of the mentioned items. ≪ RTI ID = 0.0 >

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms " comprises "and / or" comprising "used in the specification do not exclude the presence or addition of one or more other elements in addition to the stated element.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" And can be used to easily describe a correlation between an element and other elements. Spatially relative terms should be understood in terms of the directions shown in the drawings, including the different directions of components at the time of use or operation. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a perspective view showing a wiper device according to the present invention.

Referring to Fig. 1, the wiper device may be disposed between the windshield of the vehicle and the bonnet. The wiper device includes a wiper 100 for wiping foreign materials on the outer surface of the windshield, a wiper arm 300 coupled to and supported by the wiper, a washer pipe 310 disposed inside the wiper arm, (Not shown).

The washer tank 500 is located under the bonnet of the vehicle, and can store a washer liquid composed of cleaning components therein. The cleaning component includes alcohol as a main component and may be composed of a small amount of a surfactant, a blending agent, and a mixture of water. However, the cleaning component is not limited to the above examples. have.

The washer tank 500 can transfer the washer liquid through the washer hose 350 according to the operation of the washer pump 400. The washer pump 400 may also be disposed below the bonnet of the vehicle and adjacent to the washer tank 500. The washer fluid introduced into the washer pump 500 can discharge the washer fluid through the washer pipe 350 in accordance with the operation of the washer pump 310. The washer pipe 310 is disposed inside the wiper arm 300, To the wiper (100). The washer pipe 310 will be described later.

The wiper arm 300 is coupled to a lower portion of the wiper 100 to support the wiper 100 and a washer pump 400 and an electric motor 320 for generating rotational force are disposed at one end of the wiper arm 300, ).

The electric motor 320 generates a rotational force as described above to control the repetitive motion of the wiper arm 300 from the lower portion of the windshield to the side portion thereof and is connected to the lower portion of the wiper arm 300 Can be located inside the vehicle bonnet.

The wiper arm 300 can be moved repeatedly from the lower side to the side portion of the vehicle windshield according to the rotational force of the electric motor 320. The direction in which the wiper arm 300 moves to the windshield side is referred to as the first The direction in which the wiper arm moves to the lower portion of the windshield can be set to the second direction.

2 shows a perspective view of a wiper according to an embodiment of the present invention.

Referring to FIG. 2, the wiper includes a blade, an elastic member for supporting the blade, a cover portion that protects the elastic member and includes a chamber portion, and an adapter that is located on an upper outer surface of the cover portion.

The blade 110 has a triangular shape that widens from the portion corresponding to the blade of the tip toward the top, and is formed of an elastic material having a deformable shape. In addition, a slit-shaped groove can be formed in the longitudinal direction so that the washer liquid injected through the chamber portions 120a and 120b to be described later can be easily collected. At this time, the number of the slit-shaped grooves may be plural, and the number of the slit grooves is not limited.

The elastic member 140 may be positioned on the upper side of the blade 110 to fix the shape of the wiper 100 so that the shape of the wiper 100 is not deformed. And may be coupled to the upper surface of the elastic body blades 110 in the form of a plate.

Meanwhile, a heating element (not shown) may be provided inside the elastic member 140. The heating element may be disposed adjacent to the chamber parts 120a and 120b, and may be a heating element in the form of a heating wire or a heating plate itself in the elastic member of the flat plate type. However, the heating element is not limited to the embodiment .

The heating element (not shown) can receive electric power from a generator in the vehicle and convert it into thermal energy. Therefore, it is possible to maintain the proper temperature so that the washer fluid contained in the chamber parts 120a and 120b is not frozen during the winter season due to the heat energy dissipated from the heating element, can stop the operation during the summer season, The standard can be set.

The cover 150 may be disposed on the upper side of the blade 110 and the elastic member 140 to protect the components from external stimulation. May be variously provided in a manner that the blade 110 is hermetically sealed or partially hermetically sealed.

1, the adapter 200 includes a wiper arm 300 and a wiper 100, which are located on the upper outer surface of the cover unit 150 and perform repetitive movement by receiving a rotational force from the electric motor 320, You can connect.

2, the cover part 150 according to the present invention includes chamber parts 120a and 120b which are passages through which the washer liquid is transferred. The chamber parts 120a and 120b may be disposed inside the cover part 150 and extend in the longitudinal direction, and a plurality of the chamber parts 120a and 120b may be provided. The chamber portions 120a and 120b may include a first chamber 120a positioned in a first direction of the adapter 200 and a second chamber 120b located in a second direction of the adapter 200, And a washer fluid supplied from the switch pump 210 can be transferred into each of the chamber portions.

Subsequently, the chamber portions 120a and 120b further include an injection nozzle 130 in the form of a hole passing through the outer surface. The injection nozzle 130 may have a shape of micro pores so that the washer fluid contained in the chamber portion can be injected to the outside at a high pressure. In addition, a plurality of the injection nozzles 130 are arranged in the longitudinal direction on the outer surface of the chamber portion, and the washer liquid can be sprayed to the movement path of the cover portion 150 described above.

Referring to FIG. 2, the adapter 200 includes a wiper arm (not shown) which is positioned on the upper side of the cover 150 and receives rotational force from the electric motor 320 and performs repetitive motion 300 and the wiper 100 including the blade 110, the elastic member 140, and the cover unit 150 can be connected to each other.

More specifically, the adapter 200 includes a switch valve 210, which is coupled to the inside of the adapter 200 and includes a pressure sensing part on its outer surface. The switch valve 210 is connected to the inside of the wiper arm 300 To the washer pipe 310 disposed in the washer pipe 310.

Figure 3 shows a top view of an adapter according to an embodiment of the invention.

3, the adapter 200 has a structure in which the upper surface of the adapter 200 is located on the upper outer surface of the cover part 150 and fixes the wiper 100 so as to be movable within the windshield range of the vehicle .

The adapter located on the upper side of the wiper 150 includes a switch valve coupled to the inside thereof and including a pressure sensing part. The pressure sensing part includes a first pressure button located in one direction of the switch valve, And a second pressure button located in the other direction of the valve.

The switch valve 210 is located inside the adapter and can transfer the washer liquid to the chamber unit through the plurality of valve pipes 240a and 240b. The switch valve 210 is connected to one side of the switch valve 210 and the washer pipe 310).

In addition, a plurality of guide lines 220 may be disposed in the lower portion of the switch valve 210 in a direction perpendicular to the wiper arm. The guide line 220 moves the switch valve inside the adapter according to the movement of the wiper arm. .

For example, when the wiper arm operates according to the operation of the electric motor 320 described above with reference to FIG. 1, the switch valve 210 connected to the wiper arm can also move inside the fixing member. At this time, the switch valve 210 is moved on the guide line 220 disposed at the lower part, and the single guide line 220 may cause unbalance of the switch valve 210 which is horizontal with the adapter, However, when a single guide line 220 has a flat plate shape having a predetermined area so as to maintain the balance of the switch valve 210, a single guide line may be provided, and the present invention is not limited to the above embodiment. The range of the movement of the switch valve through the guide line 220 may be in a range of 1.2 cm to 1.5 cm when the width of the adapter is 2 cm, but the present invention is not limited thereto.

On the other hand, as the switch valve moves through the aforementioned guideline, the switch valve can come into contact with the inner surface of the adapter. At this time, the pressure sensing part located on the outer surface of the switch valve senses this and can open or close the above-mentioned valve pipe.

The pressure sensing part may be disposed in a protruding shape on both sides and includes a first pressure button 230a positioned in a first direction of the switch valve 210 and a second pressure button 230a located in a second direction of the switch valve 210, And a pressure button 230b.

The first pressure button 230a and the second pressure button located on the outer surface of the switch valve 210 may be connected to each other inside the switch valve 210 to have a straight bar shape. Can be alternately inserted into the interior of the switch valve in the process of contacting the inner surface of the adapter 200 through the guide line 220.

For example, as the wiper arm operates, the switch valve 210 can move in a first direction which is the side of the windshield of the vehicle. At this time, as the switch valve 210 comes into contact with the inner surface of the adapter 200 in the process of moving, the first pressure button 230a protruding from the outer surface of the switch valve is inserted into the switch valve. The first pressure button 230a is connected to the second pressure button 230b so that the second pressure button 230b can be protruded to the outside by a depth at which the first pressure button 230a is inserted .

On the other hand, when the wiper arm is operated, when the switch valve 210 moves in the second direction which is the lower part of the windshield of the vehicle, the second pressure button 230b can be inserted into the switch valve 210, The first pressure button 230a may protrude to the outside by a depth at which the second pressure button 230b is inserted. At this time, the variable piston 215 may be disposed at one end of the first pressure button and at one end of the second pressure button to guide the washer fluid supplied from the washer pipe into the switch valve. The variable piston will be described later.

In addition, the interior of the switch valve 210 may include valve pipe portions 205, 240a, and 240b for transferring a plurality of washer fluids to the chamber portions 120a and 120b. The valve pipe portions 205, 240a and 240b may be formed into a plurality of pipes from a single pipe. In an exemplary embodiment, the valve pipe portions 205, 240a, and 240b may be branched into a Y-shape in a rectangular shape of the branch pipe, but the present invention is not limited thereto, As shown in FIG. The valve pipe portion will be described later.

Figure 4 illustrates a cross-sectional view of an adapter cut along the line AA 'of a securing member in accordance with an embodiment of the present invention.

As shown in the drawing, a wiper arm 300 may be disposed on the outer surface of the switch valve 210, and a washer pipe 310 disposed inside the wiper arm 300 may be connected to the switch valve 210 And may be connected to the valve pipe portions 205, 240a, and 240b, which are passages through which the washer fluid flows.

The valve pipe portion includes a connecting portion that is a portion connected to the washer pipe 310, a first valve pipe connected to the connecting portion and positioned in a first direction, and a second valve pipe connected to the connecting portion, .

The connection portion 205 is a portion where the washer pipe 310 and the valve pipe portion are connected to each other and guides the washer fluid to flow into the switch valve 210 to be guided to the first valve pipe 240a and the second valve pipe 240b, can do.

The variable piston 215 may be disposed inside the connection portion 205 to guide the washer fluid supplied from the washer pipe 310 as described above. The variable piston 215 may be coupled to one end of the first pressure button 230a and one end of the second pressure button 230b as shown in FIG. Can be blocked.

5A, when the switch valve 210 is in the neutral position, the variable piston 215 blocks the connection portion 205 and transfers the washer liquid from the pipe 310 to the valve pipe portion 240 In this case, the washer fluid can be prevented from flowing into the first valve pipe 240a and the second valve pipe 240b.

5B, when the wiper arm 300 is operated in the first direction, the switch valve 210 is brought into contact with the inner surface of the adapter 200 positioned in the first direction. At this time, the first pressure button 230a, Can be inserted into the interior of the switch valve 210. The variable piston 215 and the second pressure button 230b connected to the first pressure button can move in the second direction by the inserted depth and the connection portion 205, which is blocked by the movement of the variable piston 215, The washer fluid can be introduced into the first valve pipe 240a.

5C, when the wiper arm 300 is operated in the second direction, the switch valve 210 is brought into contact with the inner surface of the adapter 200 positioned in the second direction. At this time, the second pressure button 230b, Can be inserted into the interior of the switch valve 210. The variable piston 215 and the first pressure button 230a connected to the second pressure button can move in the first direction by the inserted depth and the connection portion 205 which is blocked due to the movement of the variable piston 215, The washer fluid can be introduced into the second valve pipe 240b.

When the operation of the wiper arm 300 is terminated and the switch valve 210 is in the neutral position, the variable piston 215 is moved to the neutral position through a separate elastic body (not shown) Position to close the open connection 205.

Figure 6 shows a cross-sectional view of a washer pipe according to an embodiment of the invention.

Referring to FIG. 6, the wiper arm 300 coupled with and supported by the adapter includes a washer pipe which is a passage of the washer liquid therein, and a vortex filter which is located inside the washer pipe and forms a plurality of voids.

1, the washer pipe 310 is disposed inside the wiper arm 300, and one end of the washer pipe 310 may be connected to the washer pump 320, and the other end thereof may be connected to the connecting portion 205, .

Meanwhile, a large amount of bubbles may be generated in the process of discharging the washer liquid to the pressure specified by the washer pump 320. The bubbles occupy a portion of the washer pipe and can reduce the amount of washer liquid delivered per unit time. The bubbles form a vortex in the washer pipe 310, so that the washer liquid is smoothly supplied to the inside of the switch valve 210 It is possible to provide an eddy current filter 311 in the washer wiper 310. The vortex filter 311 may be disposed inside the washer pipe and may include a plurality of capillaries 312 forming microvoids therein.

The washer fluid containing bubbles and eddies generated in the process of being discharged through the washer pump 400 passes through the plurality of capillaries 312 to thereby remove bubbles and vortices inherent in the washer fluid and supply them to the inside of the switch valve 210 So that the washer fluid can be smoothly supplied to the switch valve 210 per unit time.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (6)

blade;
An elastic member for supporting the blade;
A cover portion protecting the elastic member and including a chamber portion therein;
An adapter located on an outer surface of the cover portion; And
And a switch valve coupled to the inside of the adapter and including a pressure sensing portion on an outer surface thereof,
Wherein the pressure sensing portion includes a first pressure button located in a first direction of the switch valve and a second pressure button located in a second direction of the switch valve. The method according to claim 1,
Wherein the chamber portion includes:
A first chamber located in a first direction of the adapter, and a second chamber located in a second direction of the adapter. The method according to claim 1,
Wherein the chamber portion further comprises a plurality of spray nozzles passing through the inner and outer surfaces. The method according to claim 1,
And a wiper arm coupled to and supported by the adapter.
Wherein the wiper arm includes a washer pipe which is a passage of the washer liquid therein and a vortex filter which is located inside the washer pipe and forms a plurality of voids. The method according to claim 1,
And a heating element located inside the cover part and heating the plurality of chamber parts. The method according to claim 1,
Wherein the switch valve further includes a valve pipe portion located inside and connected to the chamber portion,
Wherein the valve pipe includes a first valve pipe positioned in a first direction and a second valve pipe positioned in a second direction.

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