KR20210036034A - Washer pump for automotive vehicle - Google Patents

Abstract

The present invention relates to a washer pump for a vehicle. A first nozzle (130) and a second nozzle (140) comprise: a first nozzle housing (131) and a second nozzle housing (141) which are coupled to each other in an airtight manner at both sides of a membrane (150); a first connector (132) and a second connector (142) provided on one side of the first nozzle housing (131) and the second nozzle housing (141), respectively, and coupled to a first outlet (111) and a second outlet (112); a first supply port (133) and a second supply port (143) which are spaced apart from both sides of the membrane (150) in deep parts of the first nozzle housing (131) and the second nozzle housing (141), respectively, and are provided in a tubular shape to be symmetrical to each other. The membrane (150) comprises: a fixing part (151) interposed between the first nozzle housing (131) and the second nozzle housing (141) in an airtight manner and configured to fix the first nozzle housing (131) and the second nozzle housing (141); a flow part (152) formed to have a thickness smaller than a thickness of the fixed part (151) and configured to flow according to the hydraulic pressure of a washer fluid; and a closing part (153) formed in a disk shape corresponding to a diameter of the first supply port (133) and the second supply port (143) and protruding so that both sides thereof are symmetrical to each other. Accordingly, compared to a conventional case, the washer pump has an improved ease of assembly and operation performance.

Description

Washer pump for vehicle {WASHER PUMP FOR AUTOMOTIVE VEHICLE}

The present invention relates to a washer pump for a vehicle, and more particularly, in a washer pump that sprays a washer liquid on the front and rear windshield glass of a vehicle, the structure of the membrane embedded in the dual outlet is configured differently from the prior art. And a washer pump for a vehicle to improve operating performance.

In general, automobiles are equipped with a washer system to remove snow, rain, and various foreign substances from the windshield glass and secure a front view safely.

A typical washer system for automobiles consists of a washer tank, a washer pump, a washer nozzle, and a wiper. The wiper consists of a wiper arm and a blade, and is provided to remove foreign substances by wiping the glass surface by reciprocating the blade to the left and right by intimate contact with the glass window. The washer tank in which the washer liquid composed of detergent components is stored differs slightly depending on the vehicle type, but is generally installed and installed inside the engine room or crash pad.

Meanwhile, the washer pump for a vehicle is connected to the washer tank and is provided to further enhance the effect of removing foreign substances by spraying the washer liquid onto the windshield through a nozzle. In general passenger cars, a single type washer pump is applied because a washer system is provided only on the front windshield.For example, in the case of an SUV or hatchback vehicle, a dual type washer pump is installed to supply washer fluid by providing a wiper to the front and rear windshields. .

As an example of the related art, Korea Patent Registration No. 10-1695141 includes a motor and a control unit receiving unit, a pump housing including a washer fluid inlet and a washer fluid outlet, and the washer fluid is discharged to the holder assembly through the washer fluid outlet, and the holder assembly Constitutes a washer fluid pumping device having a first valve and a second valve and including a partition wall to divide a flow path.

As another example, in Korean Patent Registration No. 10-1355587, an inlet through which washer liquid is introduced is formed at one side of the lower end of the pump housing constituting the body of the washer pump, communicates with the inner lower end of the pump housing, and the washer liquid introduced through the inlet is ejected. A washer pump is provided on the other side of the pump housing on the other side of the pump housing so that the inlet is formed so that the nozzle holder is connected to the inner side of the pump housing, and the nozzle holder is provided with a separate partition wall outside the ejection unit.

As another example, in Korea Patent Registration No. 10-1267494, an impeller rotating by a motor is installed inside, a suction port communicating with a washer liquid tank is formed in the lower center, and a pump chamber having an outlet through which the washer liquid is discharged is formed on the side, A washer fluid pump comprising a pump housing located at the top of the pump chamber and integrally equipped with a motor chamber in which the motor is placed, a spray holder coupled to one side of the pump housing and fitted with a hose connected by a washer fluid nozzle, and a diaphragm provided inside the spray holder Configure.

Korean Patent Registration No. 10-1695141 (2017.01.12) Korean Patent Registration No. 10-1355587 (2014.01.29) Korean Patent Registration No. 10-1267494 (2013.05.31) Korean Patent Registration No. 10-1027631 (2011.04.07)

The dual-type vehicle washer pump to which the above-described conventional technology is applied is provided with a pair of valves by coupling a holder assembly to one side of a pump housing on which a motor, an impeller, etc. are mounted, and the flow path is separated using a partition wall (membrane). It is configured to supply the washer fluid to the windshield and the rear windshield.

Typically, the membrane applied to the washer pump of the prior art is generally configured in a form having directionality for each of the valves.

That is, in the holder assembly of the prior art, the flow path structure of each valve is formed at a mutually asymmetrical position on both sides of the membrane, or the structure of both sides of the membrane is formed in a form having asymmetric orientation due to the mounting structure.

However, the membrane applied to the washer pump of the prior art has a problem in that the washer fluid flows toward the glass window when the pump is not operated.

In addition, since a membrane having directionality as in the related art may cause inoperability if not assembled in a predetermined direction between valves, there is a problem that the possibility of occurrence of defective products due to incorrect assembly cannot be excluded.

Accordingly, in the present invention, as invented to solve the problems of the prior art as described above,

A pump housing 110 that forms an inlet connected to the washer tank and provides a first discharge port 111 and a second discharge port 112 for extruding the washer liquid according to the rotation direction by embedding an impeller that rotates by a motor,

A dual outlet 120 coupled to one side of the pump housing 110 and provided with a first nozzle 130 and a second nozzle 140 in both directions to supply a washer liquid to each of the front and rear windshield glasses,

Including a membrane 150 provided between the first nozzle 130 and the second nozzle 140 of the dual outlet 120,

The first nozzle 130 and the second nozzle 140,

A first nozzle housing 131 and a second nozzle housing 141 that are airtightly coupled to each other on both sides of the membrane 150,

A first connector 132 and a second connector 142 provided on one side of each of the first nozzle housing 131 and the second nozzle housing 141 and coupled to the first discharge port 111 and the second discharge port 112 )Wow,

A first supply port 133 and a second supply port 143 that are spaced apart from both sides of the membrane 150 at the core of each of the first nozzle housing 131 and the second nozzle housing 141 but are provided in a tubular shape so as to be symmetrical to each other. ), and

The membrane 150,

A fixing part 151 that is airtightly interposed between the first nozzle housing 131 and the second nozzle housing 141 to be fixed,

A flow portion 152 formed to a thickness thinner than the thickness of the fixing portion 151 and flowing according to the hydraulic pressure of the washer fluid,

The first supply port 133 and the second supply port 143 are formed in a disk shape corresponding to the diameter of the tube, and are formed with a closing part 153 protruding so that both sides are symmetrical to each other. It is possible to achieve the purpose of providing an improved washer pump.

The present invention provides a dual-type vehicle washer pump that selectively supplies a washer fluid to a front and rear windshield glass of a vehicle using a single washer pump.

In particular, the present invention is provided to form a flow path structure symmetrical to each other on both sides of the membrane, and the membrane is also formed in a non-biased symmetrical structure with respect to both nozzles, so that the directionality of the prior art. Compared to a washer pump having a valve flow path structure and a membrane having a membrane, the defect rate is significantly reduced by excluding the possibility of erroneous assembly, and there is an effect of preventing the occurrence of a buffing phenomenon in which the washer fluid flows toward the glass window.

1 is a perspective view of a washer pump for a vehicle according to the present invention.
2 is a front view of a washer pump for a vehicle according to the present invention.
3 is a side view of a washer pump for a vehicle according to the present invention.
4 is a cross-sectional view taken along the line'A-A' of FIG. 2;
5 is a cross-sectional view taken along the line'B-B' of FIG. 2;
6 is a front and rear perspective view of a membrane of a washer pump for a vehicle according to the present invention.
7 is an exemplary view of an operating state of a membrane of a washer pump for a vehicle according to the present invention.

Hereinafter, a configuration and operation according to a preferred embodiment of the vehicle washer pump of the present invention will be described in detail with reference to the accompanying drawings. In the following description, detailed descriptions of parts that can be easily implemented by those of ordinary skill in the art may be omitted.

1 is a perspective view of a washer pump for a vehicle according to the present invention, FIG. 2 is a front view of a washer pump for a vehicle according to the present invention, FIG. 3 is a side view of a washer pump for a vehicle according to the present invention, and FIG. A cross-sectional view taken along the line, FIG. 5 is a cross-sectional view taken along the line B-B of FIG. 2, FIG. 6 is a front and rear perspective view of the membrane of the washer pump for a vehicle according to the present invention, and FIG. 7 is for a vehicle according to the present invention. It shows an exemplary operation state of the membrane of the washer pump.

The washer pump for a vehicle to which the technology of the present invention is applied is a washer pump that sprays a washer liquid on the front and rear windshield glass of a vehicle, and the structure of the membrane embedded in the dual outlet is configured differently from the prior art, thereby improving assembly and operation performance. Note that it relates to a washer pump for a vehicle to be improved.

For this purpose, the washer pump for a vehicle of the present invention is connected to a washer tank as shown in FIGS. 1 to 3 and a pump housing 110 that pumps washer fluid, and a dual outlet that selectively supplies the washer fluid to the front or rear window glass ( 120) and specifically as follows.

The pump housing 110 forms an inlet that is connected to the washer tank, and as shown in FIG. 4, a first discharge port 111 for discharging the washer liquid according to the rotation direction by having an impeller 113 that rotates by a motor as shown in FIG. And a second discharge port 112 is provided.

The pump housing 110 receives a washer liquid from a washer tank by connecting a predetermined hose to an inlet. At one side of the pump housing 110, a first discharge port 111 and a second discharge port 112 are formed to extrude the washer liquid to the first nozzle 130 or the second nozzle 140 of the dual outlet 120 to be described later. do.

The pump housing 110 includes a motor that rotates the rotating shaft by receiving power and control signals from the vehicle, and an impeller 113 is mounted on the rotating shaft.

The impeller 113 rotates in one direction or the other direction by the power of a motor, and is provided to extrude the washer liquid in the direction of the first discharge port 111 or the second discharge port 112 according to the rotation direction.

The dual outlet 120 is coupled to one side of the pump housing 110 and has a first nozzle 130 and a second nozzle 140 in both directions to supply a washer liquid to each of the front and rear windshield glasses. .

The dual outlet 120 is composed of a first nozzle 130 coupled to the first discharge port 111 of the pump housing 110 and a second nozzle 140 coupled to the second discharge port 112, FIG. As shown in Fig. 5, the membrane 150, which will be described later, is interposed therebetween and is formed by closely coupling so as to be symmetric with each other.

The first nozzle 130 and the second nozzle 140 have the same structure symmetrical to each other, and the first nozzle 130 includes a first nozzle housing 131 and a first connector and a first supply port 133 ), and the second nozzle 140 includes a second nozzle housing 141 and a second connector and a second supply port 143.

The first nozzle housing 131 and the second nozzle housing 141 are formed by being hermetically coupled to each other on both sides of the membrane 150. In the embodiment of the present invention, the outer diameters of the first nozzle housing 131 and the second nozzle housing 141 are differentially configured to be coupled in a form in which the other side is inserted and interposed on one side, but the coupling structure can be changed. The internal structure is configured such that both sides are symmetrical to each other based on the boundary on which the membrane 150 is mounted.

The first connector 132 and the second connector 142 are provided on one side of each of the first nozzle housing 131 and the second nozzle housing 141, and the first discharge port 111 and the second discharge port 112 Equipped to bind to. The first connector 132 and the second connector 142 are provided to be symmetrical on both sides of the membrane 150 to form a flow path through which the washer fluid is extruded and introduced from the first discharge port 111 or the second discharge port 112. It is provided so as to apply hydraulic pressure to 150.

The first supply port 133 and the second supply port 143 are spaced apart from both sides of the membrane 150 at the core of each of the first nozzle housing 131 and the second nozzle housing 141, but have a tubular shape so as to be symmetrical to each other. It is prepared and provided. The first supply port 133 and the second supply port 143 communicate with the outlet ends of the first nozzle 130 and the second nozzle 140, respectively, to form a flow path for supplying the washer liquid to the front window or the rear window.

The first supply port 133 and the second supply port 143 have a first supply port 133 provided to face each other because the closing part 153 of the membrane 150 to be described later is selectively contacted and closed. The separation distance between the second supply ports 143 is separated by a distance longer than the thickness of the closing portion 153 of the membrane 150 to secure the flow path, but is formed in consideration of the operating range of the flow portion 152.

The membrane 150 is provided between the first nozzle 130 and the second nozzle 140 of the dual outlet 120 to selectively shield a flow path of the washer fluid.

The membrane 150 is made of an elastic material and is provided in a plate shape corresponding to the diameter of the first nozzle housing 131 and the second nozzle housing 141, and as shown in Figs. 5 and 6, the fixing part 151 ) And the flowing part 152 and the closing part 153 are formed.

The fixing part 151 is provided to be airtightly interposed between the first nozzle housing 131 and the second nozzle housing 141 to be fixed.

The flowing part 152 is formed to have a thickness thinner than that of the fixing part 151 and provided to flow according to the hydraulic pressure of the washer fluid. The flow part 152 maintains a neutral state when the washer pump is not operated, and is extruded through the first discharge port 111 or the second discharge port 112 according to the rotation direction of the impeller 113 when the washer pump is operated. When the washer fluid flows into the first nozzle 130 or the second nozzle 140, it is provided to flow to one side or the other side by the pressure.

The closing part 153 is formed in a disk shape corresponding to the diameter of the first supply port 133 and the second supply port 143 so that both sides protrude symmetrically with each other. The closing part 153 is provided to move toward the first supply port 133 or the second supply port 143 by the flow part 152 to open one side and close the other side.

The closing portion 153 is formed with flow grooves 154 that are concave inwardly symmetrically at both centers to concentrate the hydraulic pressure of the washer fluid in the core portion, so that the closing portion 153 is connected to the first supply port 133 or the second It is configured to be in close contact with the supply port 143.

A schematic look at the operating state of the washer pump for a vehicle to which the technology of the present invention is applied, which has the configuration as described above, is as follows. The following description is for describing the present invention by way of a preferred embodiment, so it is natural that the present invention is not limited to the following examples, and that various modifications may be provided within the scope of the present invention. .

The washer pump of the present invention connects the inlet of the pump housing 110 to the washer tank by mounting a single washer pump inside the vehicle body, and the first nozzle 130 and the second nozzle 140 of the dual outlet 120, respectively. It is installed to connect to the washer spray nozzle provided on one side of the front and rear windshield glass.

When power and control signals are transferred from the vehicle to the washer pump, the motor built in the pump housing 110 rotates the impeller 113 in one direction. As shown in Figure 7 (a), when the washer liquid is extruded through the first discharge port 111 of the pump housing 110, the first connector 132 of the first nozzle 130 of the dual outlet 120 The washer fluid flows in. The membrane 150, which was maintained in a neutral state by fixing the fixing part 151 between the first nozzle housing 131 and the second nozzle housing 141, is operated by strong hydraulic pressure of the washer fluid, so that the flowing part 152 is controlled. 2 It is bent toward the nozzle (140). As the hydraulic pressure is concentrated in the flow groove 154 formed in the center of the closing part 153 of the membrane 150, the closing part 153 is in close contact with the second supply port 143 of the second nozzle 140 and completely closed. The condition is established and the supply of washer fluid is cut off. At the same time, since the first supply port 133 of the first nozzle 130 is opened, the washer liquid is ejected through the first nozzle 130 to the front washer spray nozzle.

In addition, when power and control signals are handed over from the vehicle to the washer pump and the motor built in the pump housing 110 rotates the impeller 113 in the other direction, the pump housing ( The washer liquid is extruded through the second discharge port 112 of 110), and the washer liquid flows into the second connector 142 of the second nozzle 140 of the dual outlet 120. The membrane 150, which was maintained in a neutral state by fixing the fixing part 151 between the first nozzle housing 131 and the second nozzle housing 141, is operated by strong hydraulic pressure of the washer fluid, so that the flowing part 152 is controlled. 1 is bent toward the nozzle (130). As the hydraulic pressure is concentrated in the flow groove 154 formed in the center of the closing portion 153 of the membrane 150, the closing portion 153 is in close contact with the first supply port 133 of the first nozzle 130 and is completely closed. The condition is established and the supply of washer fluid is cut off. At the same time, since the second supply port 143 of the second nozzle 140 is in an open state, the washer liquid is ejected through the second nozzle 140 to the rear washer spray nozzle.

The washer pump for a vehicle according to the present invention as described above provides a dual-type vehicle washer pump for selectively supplying washer fluid to the front and rear windshield glass of the vehicle using a single washer pump. Both nozzles are provided to form a flow path structure symmetrical to each other on both sides of the membrane 150, and the membrane 150 also constitutes a washer pump having a symmetrical structure that does not have directionality with respect to both nozzles.

Accordingly, the present invention significantly reduces the defect rate by excluding the possibility of misassembly and prevents the occurrence of a buffing phenomenon in which the washer liquid flows toward the window, compared to the valve structure having the directionality of the prior art and the washer pump equipped with the membrane 150. It has the advantage of having various effects.

110: pump housing
111: first discharge port
112: second discharge port
120: dual outlet
130,140: first and second nozzles
131,141: 1st and 2nd nozzle housing
132,142: connector 1, 2
133,143: 1st and 2nd supply ports
150: membrane
151: fixing part
152: moving part
153: closure
154: flow groove

Claims (2)

A pump housing 110 that forms an inlet connected to the washer tank and provides a first discharge port 111 and a second discharge port 112 for extruding the washer fluid according to the rotation direction by embedding an impeller that rotates by a motor,
A dual outlet 120 coupled to one side of the pump housing 110 and provided with a first nozzle 130 and a second nozzle 140 in both directions to supply a washer liquid to each of the front and rear windshield glasses,
Including a membrane 150 provided between the first nozzle 130 and the second nozzle 140 of the dual outlet 120,
The first nozzle 130 and the second nozzle 140,
A first nozzle housing 131 and a second nozzle housing 141 that are airtightly coupled to each other on both sides of the membrane 150,
A first connector 132 and a second connector 142 provided on one side of each of the first nozzle housing 131 and the second nozzle housing 141 and coupled to the first discharge port 111 and the second discharge port 112 )Wow,
A first supply port 133 and a second supply port 143 that are spaced apart from both sides of the membrane 150 at the core of each of the first nozzle housing 131 and the second nozzle housing 141 in a tubular shape so as to be symmetrical to each other. ), and
The membrane 150,
A fixing part 151 that is airtightly interposed between the first nozzle housing 131 and the second nozzle housing 141 to be fixed,
A flowing portion 152 formed to have a thickness thinner than that of the fixing portion 151 and flowing according to the hydraulic pressure of the washer fluid,
A washer pump for a vehicle, comprising a closing portion 153 formed in a disk shape corresponding to the diameter of the first supply port 133 and the second supply port 143 and protruding so that both sides thereof are symmetrical to each other. The method of claim 1,
In the closing part 153,
By forming a flow groove 154 that is concave inward so as to be symmetrical to each other at the centers of both sides, the hydraulic pressure of the washer fluid is concentrated in the core, so that the closing part 153 is in close contact with the first supply port 133 or the second supply port 143 Washer pump for a vehicle, characterized in that configured to be in close contact.

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