KR101513908B1 - Check Valve for Washer Supply Pipe of Vehicle - Google Patents

Abstract

According to an aspect of the present invention, a check valve for a detergent supply pipe of a vehicle comprises: a valve main body having an inlet pipe portion on one side and having an outlet pipe portion on the other end, wherein inlet pipe portion has a hanging protrusion on the circumference thereof and a detergent supply pipe for receiving a detergent is inserted, and the outlet pipe portion has a hanging protrusion on the circumference thereof and a detergent supply pipe for discharging a detergent is inserted; and a countercurrent prevention body which is installed inside the valve main body and is supported by the elastic body.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a check valve for a washing-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a check valve for a cleaning agent supply pipe for an automobile, and more particularly, to a check valve for preventing detergent backflow in an automobile by integrally manufacturing a check valve for prevention of backflow of the cleaning agent, To a check valve for a cleaner supply pipe of an automobile which can be easily replaced when elasticity of an elastic spring for actuating a backflow prevention means is lowered.

Generally, a cleaning agent for cleaning a glass of a vehicle is used by ejecting a cleaning agent in a cleaning agent container installed in the engine bonnet of the vehicle. In more detail, an apparatus composed of a detergent bottle with a cleaning agent, a pump, a detergent supply pipe, a check valve, and a check valve, which is a backflow prevention device, is used in the engine bonnet of the vehicle.

At this time, when the user operates the pump, the cleaning agent contained in the cleaning agent container injects the cleaning agent through the supply pipe into the window of the vehicle through the check valve through the nozzle. At this time, the check valve is installed to prevent backflow of the cleaning agent.

6 is a view showing an embodiment shown in Korean Utility Model Laid-Open No. 1998-026541, which is an example in which an inlet-side main body 11 and an outlet-side main body 12 are coupled to each other, And a ball 14 which is supported by the supporting member 13. At this time, the cleaning agent supplied through the inlet-side main body 11 moves to the outlet-side main body 12 while pushing the ball 14, and the cleaning agent moves from the outlet-side main body 12 to the inlet- The reverse flow phenomenon prevents the backflow of the cleaning agent by closing the inlet of the inlet-side main body 11 with the elastic spring 13. In this case, since the ball 14 is used, it is not easy to engage with the elastic spring 13, and since the elastic spring 13 can not push the ball 14 in the straight direction, The problem of the backflow of the cleaning agent occurs due to the above-mentioned problem.

7 shows a state in which the backward flow resting body 21 is in contact with the inlet side main body 11 due to the action of the resilient spring 13 and the backflowrest 21, Is firmly adhered to each other. However, when the backflow preventing member 21 is bulky as compared with the inlet-side main body 21 and the cleaning agent supplied through the inlet-side main body 11 moves while pushing the backflow preventing member 21, There is a problem that a vortex is generated in the corner space portion 7 of the main body 9. [ When the elastic spring 13 is weak, the backflow preventing member 21 can not easily come into close contact with the inlet-side main body 11, The powder soap which is not completely dissolved remains in the edge space portion 7 to prevent the backflow prevention member 21 from completely sealing the inlet side body 11 and preventing the backflow of the cleaning agent This is often the case. When the elastic spring 13 is biased to either side, the backflow prevention member 21 is inclined to either side, which also prevents the backflow of the cleaning agent from being completely prevented.

In order to solve such a conventional problem, as shown in Fig. 8, there is provided a backflow preventing member 21 which is connected to the inlet side main body 11 and the outlet side main body 12 and receives the support of the elastic spring 13 therein The backflow prevention device according to claim 1, wherein a taper surface (30) is formed inside the inner surface of the inlet body (11), and the backflow prevention body (21) (31) and a tapered portion (32) coinciding with a tapered surface (30) of the inlet side body (11) are formed between the guide portion (31) and the cylindrical body A device for preventing backflow of cleaning agents for glass cleaning. " Has been proposed as a utility model registration No. 20-0376762.

However, such a conventional backwash preventing device for cleaning a vehicle glass is divided into an inlet-side main body 11 and an outlet-side main body 12 and is divided into an inlet-side main body 11 and an outlet- Side body 11 and the outlet-side main body 12 at the time of assembling the inlet-side main body 11 and the outlet-side main body 12 in a state where the contact surfaces are fixedly engaged with each other while the elastic spring 13 and the check- There is a problem that the flowing detergent leaks to the outside.

Further, only the backflow preventing member 21 and the elastic spring 13 can not be replaced during the malfunction of the backflow preventing member 21 during use and the prevention of the backflow of the cleaning agent due to the elasticity of the elastic spring 13, The entire apparatus needs to be replaced, which requires a large replacement cost.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a check valve for preventing backflow of cleaning agent, And to provide a check valve for a cleaner feed pipe of an automobile which can be easily replaced when elasticity of an operating elastic spring is lowered, thereby minimizing the replacement cost and enabling permanent use of the check valve body.

In order to achieve the above object, the present invention provides a washing machine comprising: a tubular body to which a cleaning agent supply pipe for introducing a cleaning agent is inserted at one side, an inlet portion having an engaging hole at an outer circumference thereof, and a cleaning agent supply pipe for discharging the cleaning agent, A check valve for a cleaning agent supply pipe for an automobile including a valve body in which an outlet portion having a protruding portion is formed on a valve body and a backflow preventing body located inside the valve body and supported by an elastic body,

An operating hole is formed between the inlet portion and the outlet portion so as to project outward so that the flow direction of the cleaning agent is indicated by an arrow, and an operating slot having a larger diameter than the peripheral edge of the inlet portion is formed at the inner periphery of the outlet portion of the valve body, A plurality of protrusions are formed in a part of the inner side of the inner circumferential working elongated hole and are protruded from the inner circumferential surface at a predetermined interval so as to have a larger inner circumference than the inner circumferential edge of the inlet portion to guide the sliding movement of the backflow preventer and the elastic spring At the same time, a guide protrusion for securing a flow passage of the cleaning agent is formed;

The backflow preventing member is made of silicone or rubber material and has a "T" shape having a head section at the upper end and a leg section at the upper end, the head section being mounted on the working section so as to face the inlet section, Thereby sealing the periphery of the inlet portion;

The elastic body is an elastic spring;

And a fastening member inserted into a peripheral edge portion of the outlet portion of the valve body to be fixedly coupled to the valve body by fixing means and having a flow hole formed therein for discharging the cleaning agent to the outside of the outlet portion.

Wherein the fastening member further includes a telescopic groove formed inwardly at a distal end portion in the outward direction of the outlet portion,

The fastening means is formed with a protrusion protrusion protruded outward from the outer surface of the fastening member and formed with a fastening hole formed in the distal end of the outlet portion to fasten the protrusion fastener inward.

The backflow preventing body is further characterized in that a pressure concentrating recessed portion is formed by forming a concave portion inward at the center portion of the upper end of the head portion to increase the sectional area.

As described above, the present invention has an effect of fundamentally preventing the deterioration of the leakage of the cleaning agent due to the assembly failure by integrally manufacturing the check valve for preventing the backflow of the cleaning agent.

Further, when the elasticity of the resilient spring for operating the abrasion preventing means or the backflow preventing means installed in the inside is worn, it can be easily replaced, thereby minimizing the replacement cost and enabling the permanent use of the check valve body.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view of a check valve for a cleaning agent supply pipe of an automobile according to an embodiment of the present invention,
FIG. 2 is a plan view showing a combined state of a check valve for a cleaning agent supply pipe of an automobile according to an embodiment of the present invention,
3 is a sectional view taken along the line AA in Fig. 2,
4 is a sectional view of a check valve for a cleaning agent supply pipe of an automobile according to an embodiment of the present invention,
FIG. 5 is a sectional view showing the operation of a check valve for a cleaning agent supply pipe of an automobile according to an embodiment of the present invention,
6, 7 and 8 are explanatory views showing a check valve for a cleaning agent supply pipe of a conventional automobile.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the user, the intention or custom of the operator, and the like.

Therefore, it goes without saying that the definition should be based on the contents throughout this specification.

A check valve for a cleaning agent supply pipe for an automobile according to the present invention is a tube body to which a detergent supply pipe 50 into which a detergent 60 is introduced is inserted at one side thereof and an inlet portion 11 having a detent 12 at its outer circumference, A valve body 10 in which a cleaning agent supply pipe 51 through which a cleaning agent 60 is discharged is inserted into the other side of the valve body 10 and an outlet part 13 having a protrusion 15 at its outer periphery is formed; (20) which is supported by an elastic spring (30) which is located inside the elastic member (30) and opens and closes the outlet portion (13), and a backflow preventing member An elastic spring 30 for opening or closing the inlet portion 11 and a fastening member 40 inserted into the outlet portion 13 to support one side of the elastic spring 30. [

A display portion 18 is formed between the inlet portion 11 and the outlet portion 13 so as to protrude to the outside and indicates the flow direction of the cleaning agent 60 in the form of an arrow. Inside the outlet portion 13 of the valve body 10 An operation slot 14 having a larger diameter than the periphery of the inlet 11 is formed at the periphery of the valve body 10 and a part of the inner periphery of the outlet 13 of the valve body 10 is elongated in the longitudinal direction A plurality of protrusions are formed at regular intervals on the inner circumferential surface and are protruded so as to have a larger inner circumference than the inner circumference of the inlet portion 11 to guide the sliding movement of the backflow preventing body 20 and the elastic spring 30, A guide protrusion 17 for securing a passage through which the first and second guide grooves 60 and 60 communicate.

The backflow preventing member 20 is made of silicone or rubber and has a "T" shape with a front end having a head 21 at the top and a leg 23 at the top and a bottom 23, The head 21 is mounted so as to face toward the inlet 11 so as to close and seal the periphery of the inlet 11 with the elasticity of the elastic spring 30 wound on the leg 23, A pressure concentrating recessed portion 22 is formed in which the pressure receiving cleanser 60 is concentrated by forming a concave portion inward at the upper center portion to increase the cross sectional area.

The elastic spring 30 is an elastic body that opens and closes the inlet portion 11 by the backflow preventing member 20 by the fastening member 40.

The fastening member 40 is a rod or tube which is inserted into the peripheral edge portion of the outlet portion 13 of the valve body 10 and is fixedly coupled by the fastening means 41. Inside the fastening member 40, A flow hole 42 to be discharged to the outside of the outlet 13 is formed and a stretching groove 43 is formed inwardly from the distal end of the outlet 13 in the outward direction.

The fixing means 41 is formed with a protrusion protrusion 44 protruding outward from the outer surface of the coupling member 40 and is formed at the tip of the outlet portion 13 so that the protrusion locking protrusion 44 And a latching through-hole 16 is formed to be fastened inward.

4 and 5, the cleaning agent supply pipes 50 and 51 may be forcedly engaged with the inlet 11 and the outlet 13 of the valve body 10, respectively. At this time, the cleaning agent supply tubes 50 and 51 are shown as flat tubular bodies, but they may also be formed as iridium tubes.

As shown in FIG. 4, when the cleaning agent 60 is not used, the inlet 11 of the backflow prevention member 20 is closed by the elasticity of the elastic spring 30 in the operation long hole 14, The pressure of the cleaning agent 60 flowing through the inlet portion 11 of the valve body 10 is larger than the elastic force of the elastic spring 30 pushing the backflow preventing body 20 toward the inlet portion 11 side, The elastic spring 30 is contracted and the backflow preventing member 20 is moved in the direction of the tip of the outlet portion 13 by the guide protrusion 17 and at this time, The cleaning agent 60 is supplied to the cleaning agent supply pipe 51 surrounding the outlet 13 via the operating hole 14 and the flow hole 42 of the fastening member 40 .

When the pressure of the cleaning agent 60 disappears in this state, it is returned to the original position as shown in FIG.

If the elasticity of the resilient spring 30 is lowered or the backflow preventing member 20 is worn after a certain period of time after being operated in this state, the cleaning agent supply pipe 51 is removed from the outlet portion 13 of the valve body 10, The fastening member 40 is separated from the operating elongated hole 14 of the outlet portion 13 by pushing the protruding hook 44 of the fastening member 40 inwardly in the fastening hole 16 of the fastening portion 41, (30) and the backflow prevention body (20) are separated to the outside.

At this time, in the state where the elastic spring 30 and the check valve 20 are replaced with a new product, the check valve 20 and the elastic spring 30 are inserted into the operation slot 14 of the outlet 13 in this order The engaging member 40 is inserted and the protruding engaging protrusion 44 is slid into the engaging hole 16. And then the cleaning agent supply pipe 51 is forcedly coupled to the outlet 13 again.

10: valve body 11: inlet portion
12, 15: a stalk part 13:
14: working elongated hole 16: engaging hole
17: guide projection part 18: display part
20: backflow preventing body 21: head portion
22: pressure concentration recessed portion 23: leg portion
30: Elastic spring
40: fastening member 41: fastening means
42: Distribution hole 43: Expansion joint
44: protruding jaw
50, 51: Cleaner feed pipe
60: Cleaner

Claims (3)

A tubular body into which a detergent supply pipe for introducing a cleaning agent is inserted at one side thereof, an inlet portion having an engaging projection at an outer circumference thereof and a detergent supply pipe for discharging the detergent at the other side thereof, and an outlet portion having a stake portion at an outer periphery thereof, The valve body has a head portion formed at an upper portion thereof with silicone or rubber and is positioned inside the valve body. The valve body is closed by sealing elasticity of the elastic spring with the elasticity of the elastic spring And a fastening member which is inserted into the peripheral edge portion of the outlet portion of the valve body to be fixedly coupled by fixing means and in which a flow hole is formed in which a cleaning agent is discharged to the outside of the outlet portion, A supply pipe check valve comprising:
A plurality of protrusions are formed at a certain interval in the longitudinal direction and at a certain interval in the inner circumferential surface in a part of the inner side of the operation hole of the inner circumference of the outlet portion A guide protrusion protruding to have a larger inner circumference than the inner circumference of the inlet portion to guide the sliding movement of the backflow preventing member and the elastic spring and to secure the flow path of the cleaning agent;
The backflow preventing body has a "T" -shaped cross section and a leg section at the top and bottom;
Wherein the fastening member further includes a telescopic groove formed inwardly at a distal end portion in the outward direction of the outlet portion,
Characterized in that the fixing means is formed with a protrusion protrusion protruded outward from the outer surface of the coupling member and formed with a locking hole formed in the distal end of the outlet portion to fix the protrusion locking protrusion from the inner side Check valve for cleaning agent supply line. delete delete

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