KR200173015Y1 - A washer injection system for a car - Google Patents

Abstract

The present invention relates to a washer fluid injector for a vehicle, and the present invention is a complicated and expensive operation motor for a washer fluid injector according to the prior art, or an injection pump operated by the operating motor, thereby increasing the manufacturing cost. In order to solve the inconvenience and the inconvenience caused by frequent failures.

The present invention induces washer fluid storage tank (10) to move the upper and lower pistons (30, 50) by the negative pressure generated in the intake manifold (3) to inject the washer fluid into the windshield of the vehicle as needed. The upper and lower pistons 30 and 50 are installed inside the pipe 12, and the inlet hole 76 and the air hole 74 which are opened and closed by the solenoid 90 are formed in the lower part of the induction pipe 12, and the engine When negative pressure is generated in the intake manifold (3) by the operation of the upper and lower pistons (30, 50) by the pressure difference between the bottom of the washer fluid storage tank (10) and the operation chamber (70), the washer fluid By feeding (1) to the injection nozzle 2, an expensive part for jetting the washer liquid 1 can be eliminated, thereby making it a useful design that can constitute a washer liquid injector having a simple configuration at low cost.

Description

Vehicle Washer Liquid Injector

The present invention relates to a washer fluid injector for a vehicle, and in particular, the washer fluid is sprayed on the windshield to wash the windshield of a car contaminated with various dust, etc., but the piston is operated by the negative pressure of the intake manifold. By installing the inside of the storage tank so that the washer fluid is injected into the injection nozzle by the operation of this piston, the washer fluid for the vehicle, in which a separate injection pump for injecting the washer fluid or an operation motor for operating the same, can be removed. It relates to an injection device.

In general, dust is accumulated on the windshield surface of the vehicle. Thus, when the dust is accumulated on the windshield, the driver's front clock is blurred, and a wiper device is installed at the rear of the engine room to remove the dust.

The wiper device may not be used when there is no water on the surface of the windshield, and may be used only in rainy weather or when the washer fluid is injected.

This is because when the wiper is operated in a state in which the windshield is free of moisture, the windshield is scratched by dirt.

As such, when the wiper device is operated to clean the windshield, except in rainy weather, the washer fluid is sprayed for the smooth operation of the wiper, which is pumped to the nozzle by the injection pump while stored in the washer fluid storage tank. It was being sprayed.

However, the washer fluid injector according to the related art has a problem in that a complicated and expensive component must be used to inject the washer fluid.

That is, as shown in Figure 1, in order to spray the washer liquid (A) stored in the washer liquid storage tank (E) to the nozzle (C) was installed an operating motor (G) on one side of the washer liquid storage tank (E) In addition, the injection pump (B) operated by the operation motor (G) was combined with the operation motor (G).

In this way, by installing the injection pump (B) operated by the operating motor (G) on one side of the washer fluid storage tank (E), the washer fluid (A) in the washer fluid storage tank (E) by the nozzle (C) to pressurize the vehicle Although it could be sprayed on the windshield D, the use of expensive operating motors (G) or injection pumps (B) has caused a problem that the manufacturing cost of the washer liquid injector has been increased, and the operation has a complicated structure. By using the motor (G) or the injection pump (B), there was also a problem that occurs frequently during use.

The present invention is devised to solve the problems of the prior art as described above, the technical problem of the present invention is to operate by the negative pressure (vacuum) of the intake manifold so as to wash the windshield of the car contaminated with various dirt, etc. A piston is installed inside the washer fluid storage tank, and an operating chamber capable of generating a pressure difference at the bottom of the washer fluid storage tank is formed, and the washer fluid is pumped to the injection nozzle by the operation of the piston rising due to the pressure difference. By spraying, it is possible to delete a separate part for spraying the washer liquid, to simplify the washer liquid injector to provide a vehicle washer liquid injector that can reduce the manufacturing cost.

The technical problem of the present invention is a washer fluid injector for spraying the washer fluid stored in the washer fluid storage tank to the vehicle's windshield through the injection nozzle as needed, wherein the washer fluid is stored and an induction pipe having a stopper at the bottom thereof The formed washer liquid storage tank; One end is installed at one side of the bottom of the washer fluid storage tank, and the other end comprises: a first vacuum tube connected to the intake manifold of the engine; An upper piston installed inside the washer fluid storage tank; A return spring having one end fixed to the bottom of the upper piston and the other end fixed to an inner bottom of the washer fluid storage tank; A lower piston coupled to the upper piston by a connecting rod and sliding in the induction pipe; An operating chamber formed in communication with the induction pipe, an inlet hole is formed at one side of the upper surface thereof, and an air hole is formed at the other side of the upper surface thereof; A second vacuum tube connecting the inlet hole of the working chamber and the first vacuum tube; First and second opening and closing plates inserted into the guide groove of the operation chamber to open and close the inflow hole and the air hole; It is achieved by providing a vehicle washer liquid injector, characterized in that the operating rod coupled to the first and second opening and closing plate is composed of a solenoid to operate the first and second opening and closing plate to slide by the operation of the switch.

1 is a view showing a washer liquid injection device according to the prior art.

2 is a cross-sectional view taken along the line A-A of FIG.

Figure 3 is a sectional view of the washer fluid injector according to the present invention.

Figure 4 is an operating state of the washer fluid injector according to the present invention.

<Explanation of symbols for main parts of drawing>

1: washer liquid 2: injection nozzle

3: intake manifold 10: washer liquid storage tank

12: guide tube 14: stopper

20: first vacuum tube 30: upper piston

40: return spring 50: lower piston

60: second vacuum tube 70: operating chamber

72: guide groove 74: air ball

76: inlet hole 80A, 80B: first and second opening and closing plate

90: solenoid 92: operating rod

S: switch

When described in detail with reference to the accompanying drawings the configuration and operation of the subject innovation having the features as described above.

In the accompanying drawings, Figure 3 is a cross-sectional view showing a washer fluid injector according to the present invention, Figure 4 is an operating state diagram of the washer liquid injector according to the present invention.

As shown in the present invention, in the washer fluid injector for spraying the washer fluid 1 stored in the washer fluid storage tank 10 to the windshield of the vehicle through the injection nozzle 2 as necessary, the injection nozzle ( A washer fluid storage tank (10) in which the washer fluid (1) pumped into 2) is stored and a guide tube (12) having a stopper (14) formed on the bottom thereof; A first vacuum tube 20 connected to one end of the bottom of the washer fluid storage tank 10 in communication with the other end thereof and connected to the intake manifold 3 of the engine (not shown); An upper piston 30 installed inside the washer fluid storage tank 10; A return spring 40 having one end fixed to the bottom of the upper piston 30 and the other end fixed to an inner bottom of the washer fluid storage tank 10; A lower piston 50 coupled to the upper piston 30 by a connecting rod and sliding in the induction pipe 12; It is formed in communication with the induction pipe 12, the inlet hole 76 is formed on one side of the top surface, the air hole 74 is formed on the other side of the top surface, the guide groove 72 is formed on the bottom of the top An operating chamber 70 formed; A second vacuum tube 60 connecting the inlet hole 76 of the operation chamber 70 and the first vacuum tube 20; First and second opening and closing plates 80A and 80B inserted into the guide groove 72 of the operation chamber 70 to open and close the inflow hole 76 and the atmospheric hole 74; The solenoid 90 which operates the operating rod 92 coupled with the first and second opening and closing plates 80A and 80B so that the first and second opening and closing plates 80A and 80B slide by the operation of the switch S. It is composed of.

Referring to the operation of the present invention configured as described above in detail based on the accompanying drawings as follows.

In order to install the washer fluid injector according to the present invention, the upper surface of the washer fluid storage tank 10 and the injection nozzle 2 are connected to each other by a flexible tube, and the induction pipe 12 is formed on the bottom of the induction pipe ( A stopper 14 is formed below the inner circumferential surface of 12), and a through hole is formed on one lower side of the washer fluid storage tank 10.

Meanwhile, the upper piston 30 is installed inside the washer fluid storage tank 10, and one end of the return spring 40 is fixed to the bottom of the upper piston 30, and the other end is the washer fluid storage tank 10. Fix it to the bottom surface. At this time, the return spring 40 is formed of a tension spring.

In this state, the through hole of the washer fluid storage tank 10 and the intake manifold 3 of the engine are connected to the first vacuum tube 20, and an installation hole is formed on one side of the intake manifold 3. Each end of the first vacuum tube 20 is fixed to a ball and a through-hole of the washer fluid storage tank 10 so that the vacuum state of the intake manifold 3 passes through the first vacuum tube 20 to the washer fluid storage tank 10. ) To the bottom, that is, the bottom of the upper piston 30 and the induction pipe 12 to be delivered.

On the other hand, the lower piston 50 is installed inside the induction pipe 12 and the lower piston 50 and the upper piston 30 are connected by connecting rods.

In addition, the lower portion of the induction pipe 12, the operation chamber 70 is formed, the inlet hole 76 is formed on one side of the top surface of the operation chamber 70, the air hole 74 is formed on the other side of the upper surface And, the guide groove 72 is formed on the bottom of the upper end.

The guide groove 72 is formed to be located at the bottom of the inlet hole 76 and the air hole 74, the guide groove 72 can open and close the inlet hole 76 and the air hole 74 First and second opening and closing plates 80A and 80B are inserted, respectively.

That is, the first opening and closing plate (80A) is in close contact with the edge of the inlet hole (76) so as to open and close the inlet hole (76) is inserted into the guide groove 72, the second opening and closing plate (80B) is the atmosphere In close contact with the edge of the ball 74 is inserted into the guide groove 72 to open and close the air hole 74.

At this time, the first and second opening and closing plates (80A, 80B) is coupled to the operating rod 92 coupled with the solenoid 90 before insertion into the guide groove (72).

The solenoid 90 is installed on one side of the operation chamber 70, and is connected to the switch (S) installed in the driver's seat.

Meanwhile, one end of the second vacuum tube 60 is fixed to the inlet hole 76, and the other end thereof is connected to an intermediate portion of the first vacuum tube 20.

Thereby, the formation and installation of the washer liquid injector according to the present invention is completed. In this state, in order to inject the washer liquid 1 into the windshield of the vehicle, the engine is first operated.

When the engine is operated, the inside of the intake manifold 3 is in a vacuum state and operates with the bottom of the washer fluid storage tank 10 connected to the intake manifold 3 and the first and second vacuum tubes 20 and 60. The interior of the chamber 70 is in a vacuum state, such as the interior of the intake manifold 3, wherein the atmospheric hole 74 is closed and the inlet hole 76 is open.

In this state, when power is applied to the solenoid 90 by operating the switch S, the solenoid 90 moves the operation rod 92 in the direction of the arrow shown by the solid line.

When the actuating rod 92 is moved in the direction of the arrow, the first and second opening and closing plates 80A and 80B engaged with the actuating rod 92 are slid in the guide groove 72, whereby the first opening and closing plate ( 80A) closes the inlet hole 76, and the second opening and closing plate 80B opens the air hole 74.

As such, when the first opening / closing plate 80A closes the inlet hole 76 and the second opening / closing plate 80B opens the air hole 74, the interior of the operating chamber 70 is at atmospheric pressure. The first and second vacuum tubes 20 and 60 and the lower portion of the washer fluid storage tank 10 and the bottom of the upper piston 30 are in a vacuum state.

When the operating chamber 70 is at atmospheric pressure, and the bottom of the upper piston 30 installed in the washer fluid storage tank 10 is in a vacuum state, the upper piston 30 and the lower piston 50 are return springs ( Overcoming the elasticity of 40) is moved upward.

This is because the upper and lower pistons 30 and 50 are installed to be movable, and the pressure at the bottom of the upper piston 30 is lower than the pressure of the operation chamber 70. The upper and lower pistons 30 and 50 are moved upward.

As such, when the upper and lower pistons 30 and 50 move upward, the washer liquid 1 stored in the upper portion of the washer liquid storage tank 10 is pumped to the injection nozzle 2 and sprayed onto the windshield of the vehicle. will be.

After the washer fluid 1 is injected in the above operation, the driver "offs" the switch S to stop it. When the switch S is " off, " the solenoid 90 moves the actuating rod 92 in the direction of the arrow shown by a dashed-dotted line, and by the movement of the actuating rod 92, the first opening and closing plate ( 80A opens the inlet hole 76 while sliding in the guide groove 72, and the second opening and closing plate 80B closes the air hole 74 while sliding in the guide groove 72.

When the inflow hole 76 is opened and the atmospheric hole 74 is closed, the inside of the operating chamber 70 is in a vacuum state, and the upper and lower pistons 30 and 50 that have moved upward are return springs 40. The lower and upper pistons 30 and 50 that were moved downward by the elasticity of the upper and lower sides are further caught downward by the stopper 14 formed on the inner circumferential surface of the guide tube 12. It is to be prevented from moving to.

As described above, the present invention uses the negative pressure generated in the intake manifold 3 to move the upper and lower pistons 30 and 50, and the washer fluid 1 stored by the movement of the upper and lower pistons 30 and 50 (1). ) Is pumped to the injection nozzle 2, so that the washer liquid injection device can be constituted at low cost.

The washer fluid injection device for a vehicle according to the present invention has an image inside the washer fluid storage tank and the induction pipe so that the upper and lower pistons can be moved by the negative pressure generated in the intake manifold so that the washer fluid is sprayed on the windshield of the vehicle as needed. A lower piston is installed, and an inlet hole and an air hole are formed in the lower part of the induction pipe, and when the negative pressure is generated in the intake manifold by the operation of the engine, the pressure difference between the bottom of the washer fluid storage tank and the operating chamber is increased. By moving the lower piston upward and pumping the stored washer fluid into the injection nozzle, expensive parts for discharging the washer fluid can be eliminated, and the structure of the washer fluid injection device can be simplified to reduce the manufacturing cost. .

Claims (1)

In the washer fluid injector for injecting the washer fluid (1) stored in the washer fluid storage tank (10) to the front windshield of the vehicle through the injection nozzle (2) as necessary, the washer fluid (1) is stored and a stopper at the bottom thereof. A washer liquid storage tank (10) having an induction pipe (12) provided with (14); One end is fixed to one side of the bottom of the washer fluid storage tank 10, the other end and the first vacuum tube 20 is connected to the intake manifold 3 of the engine; An upper piston 30 installed inside the washer fluid storage tank 10; A return spring 40 having one end fixed to the bottom of the upper piston 30 and the other end fixed to an inner bottom of the washer fluid storage tank 10; A lower piston 50 coupled to the upper piston 30 by a connecting rod and sliding in the induction pipe 12; It is formed in communication with the induction pipe 12, the inlet hole 76 is formed on one side of the top surface, the air hole 74 is formed on the other side of the top surface, the guide groove 72 is formed on the bottom of the top An operating chamber 70 formed; A second vacuum tube 60 connecting the inlet hole 76 of the operation chamber 70 and the first vacuum tube 20; First and second opening and closing plates 80A and 80B inserted into the guide groove 72 of the operation chamber 70 to open and close the inflow hole 76 and the atmospheric hole 74; The solenoid 90 which operates the operating rod 92 coupled with the first and second opening and closing plates 80A and 80B so that the first and second opening and closing plates 80A and 80B slide by the operation of the switch S. Washer liquid injection device for a vehicle, characterized in that consisting of.