KR20200065785A - Washing machine water supply valve - Google Patents

Abstract

The present invention relates to a washing machine water supply valve having a foreign matter prevention structure which minimizes a gap between a filter mounting portion by improving a mounting structure of a filter mounted on a water supply valve to prevent foreign matter from flowing into the valve. The washing machine water supply valve having a foreign matter prevention structure includes an inlet through which supplied water flows in, an outlet for supplying washing water to a washing machine, and a valve body mounted in a flow path having the inlet and the outlet communicate with each other to shut out or allow a fluid, wherein in the inlet, a filter which is detachably installed to prevent the foreign matter from flowing into the valve body and remove the filtered foreign mater, and a safety filter for re-filtering out foreign matter which has not been filtered out by the filter are formed in a double structure. The filter includes a filter unit having pores to prevent the foreign matter from entering, and a housing unit supporting the rim of the filter unit to protect the shape. The housing unit includes: a rim wall forming along the rim of the filter unit; a handle connecting inner walls of the rim wall across the center of the rim wall and protruding upwards from the filter unit; a fastening protrusion protruding from an outer wall of the rim wall to have a fitting strength; and a supporting piece operating elastically in response to an inside diameter of the inlet when the filter is assembled to prevent partial disposition. By improving the mounting structure of the filter, an allowable area of general dimensional tolerance of a molded product is sufficiently compensated, and it is possible to prevent partial disposition and deformation when the filter is assembled.

Description

Washing machine water supply valve with foreign body prevention structure

The present invention relates to a water supply valve mounted on the water supply line of a washing machine, and more specifically, a foreign material mounted on the water supply valve to improve the mounting structure of the filter to prevent foreign matter from entering the valve, thereby minimizing the gap between the filter mounting parts. It relates to a washing machine water supply valve having a preventive structure.

In general, the washing machine is driven by receiving power from a driving motor to drive the washing shaft to perform washing, rinsing, dehydration, etc., and washing. Since washing and rinsing processes use water, washing water is washed inside the washing tank. A water supply line is formed to supply the water, and a water supply valve for opening and closing the water supply path is installed at a predetermined position of the water supply line.

In addition, such a water supply valve is also mounted on some products of the dryer, that is, there are some products having a function of spraying water into the drying cylinder among the dryers, and the washing machine water supply valve is commonly used for the water supply line of the dryer.

Such a water supply valve is provided with an inlet at the inlet side that receives the supply water and an outlet at the outlet side connected to the inlet, and a diaphragm mounted on the flow path under the control of the microcomputer for washing and rinsing solenoids, etc. Using the method to open or close the valve to control the supply of supply water.

However, the supply water is identified with the naked eye or contains foreign particles of fine particles. If such foreign substances enter the water supply valve, the valve may malfunction.

In particular, in areas where the quality of raw water is poor, or when groundwater is used as supply water, it contains more foreign matter.

Therefore, most washing machine water supply valves have a built-in filter to prevent foreign substances from entering, and the filter is configured to be separable so that the user can separate and wash the filter at regular intervals.

As a filter structure of a conventional water supply valve, as disclosed in Korean Utility Model Publication No. 1999-0025576 (July 05, 1999) and Korean Patent No. 10-0263702 (September 19, 2000), separate filters are formed by forming a handle on the filter. It has been proposed that the user can easily remove and clean the filter without the need for tools.

However, the above structure is difficult to apply to various models of water supply valves because there is no tolerance of the filter.

In other words, the composition of the filter is that the injection material is formed on the rim of the filter body and the handle is integrally formed on the injection material. Therefore, when the outer diameter of the injection material is relatively smaller than the inner diameter of the inlet, foreign matter flows in. On the contrary, when the outer diameter of the injection material is relatively larger than the inner diameter of the inlet, there is a problem that the filter is not fitted.

Therefore, in order to match the outer diameter of the filter and the inner diameter of the inlet, it is possible to individually tailor the filters in various sizes to meet the tolerances of various types of water supply valves, but this is very economical in terms of cost reduction and cost reduction. there is a problem.

Therefore, in recent years, Korean Patent No. 10-0463529 (2004.12.16.), Korean Patent No. 10-0720549 (2007.05.15.), etc., are equipped with a safety filter inside the filter to make the filter double structure. Although proposed, the safety filter located inside the dual structure is not a detachable structure because it is the final safety device to prevent foreign substances from entering the valve. If there is a problem that the foreign matter flows through the gap and the foreign substance introduced through the gap blocks the passage of the safety filter, the flow path is blocked and the valve still malfunctions.

In other words, since the design to ensure that the outer diameter of the filter is assembled in close contact with the inner diameter of the inlet is very difficult, if the diameter of the filter is even slightly large, one side is generated by interference, so that foreign matter flows into the space that is generated when one side is generated. there is a problem.

In addition, when the filter is tightly inserted, when the user separates to clean the filter, the filter and the safety filter for valve safety are frequently separated at the same time, and if a foreign substance enters the valve in this state, the valve malfunctions. Causes

The present invention is to solve the above problems, and the structure of the water supply valve filter is improved so that it can be used in common even when the diameters are different for each body depending on the model of the water supply valve, or even if a small diameter difference occurs. Did.

In addition, despite the compensation for the tolerance of the dimensional tolerance of the inner diameter of the pipe to which the filter is mounted by improving the mounting structure of the filter, it is possible to minimize the occurrence of a gap and suppress the inflow of foreign matters, as well as to facilitate the separation of the filters.

The present invention as a technical idea for achieving the above object is provided with an inlet through which supply water is introduced and an outlet for supplying washing water to a washing machine, and a valve for blocking or opening a fluid in a flow path connected to connect the inlet and the outlet. A sieve is mounted, and the inlet is provided with a filter that is detachably mounted to prevent foreign substances from entering the valve body and removes the filtered foreign substances, and a safety filter for filtering foreign substances not filtered by the filter again. In the washing machine water supply valve having a foreign matter prevention structure, the filter is configured to include a filter portion having pores and a housing portion for protecting the shape of the filter portion by blocking the inflow of foreign substances, and the housing portion filters The edge wall formed along the edge of the portion, the inner wall of the edge wall is connected across the center of the edge wall, and the handle is formed to protrude to the upper side of the filter part, and is formed to protrude on the outer wall of the edge wall so as to have a fitting strength. It is configured to include a fastening protrusion for the purpose and a support piece for elastically acting in response to the inner diameter of the inlet when assembling the filter and preventing one-sided generation, thereby improving the filter mounting structure to effectively block foreign matter.

According to the washing machine water supply valve having the foreign matter prevention structure of the present invention, it is possible to prevent foreign matter flowing into the valve body to prevent malfunction or malfunction of the water supply valve.

In addition, since the structure of the filter can sufficiently compensate the allowable area of the general dimensional tolerance of the molded product, it can be commonly used as a single product even if the diameter is different for each body or even if a small diameter difference occurs. When assembling the filter to products with different dimensional tolerances, it is possible to improve the efficiency of blocking foreign matter without causing one-sided and deformation.

In addition, it is easy to assemble and separate the filter, and while securing the support force by the elastic force of the support piece, the quality of the product can be improved because the filter is inserted and withdrawn smoothly when it is combined or separated.

1 is an external perspective view of a washing machine water supply valve of the present invention
Figure 2 is a partial cut-away perspective view of the water supply valve of the structure equipped with a filter of the present invention
Figure 3 is a cross-sectional view of the water supply valve in a state in which the filter of the present invention is separated
Figure 4 is a partial cut-away perspective view of Figure 3
Figure 5 is a partially enlarged cross-sectional view showing a structure in which the filter of the present invention is mounted
6 is an external perspective view according to an embodiment of the filter of the present invention
Figure 7 is a cross-sectional view of Figure 6
8 is a cross-sectional view taken along line A-A' in FIG. 6;
9 is a cross-sectional view taken along line B-B' in FIG. 6;
10 is an external perspective view according to another embodiment of the present invention
11 is a cross-sectional view of FIG. 10
12 is an external perspective view according to another embodiment of the present invention
13 is a cross-sectional view of FIG. 12
14 is an external perspective view according to another embodiment of the present invention
15 is a cross-sectional view of FIG. 14

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

1 to 4, the washing machine water supply valve of the present invention connects the inlet 10 through which the supply water flows, the outlet 20 for supplying washing water to the washing machine, the inlet 10 and the outlet 20 It may be configured to include a flow path (30) and a valve body (40) for opening and closing the flow path.

The inlet 10 is connected to a supply line through which supply water such as waterworks and groundwater is supplied, and the supply water flows in, and the supply water introduced through the inlet flow path is opened or blocked by the operation of the valve body 40, thereby It is supplied to the water supply line of the washing machine through the outlet 20 via 30.

At this time, the inlet 10 may be equipped with a filter 1 and a safety filter 2 in order to prevent foreign substances from entering the valve body, and the supply water supplied to the inlet 10 may be filtered ( 1) and through the safety filter (2), it is possible to discharge the washing water in the filtered state of the foreign material to the outlet (20).

The filter 1 may be formed to be separable and washable by a user. The detailed structure of the filter will be described with reference to FIGS. 6 to 9 as follows.

The filter 1 includes a filter unit 100 having pores to block foreign substances from entering, and a housing unit 200 for supporting the rim of the filter unit to protect the shape of the filter unit and to be in close contact with the inner diameter of the inlet 10 It may be configured to include.

The filter part 100 of the porous material is formed to protrude to the upper side to increase the cross-sectional area of the filter to minimize the pressure generated when the supply water is supplied to secure the flow rate.

That is, when the shape of the filter unit 100 is formed in a hemispherical shape to protrude to the upper side, or when it is manufactured in a trapezoidal shape, filtering can be efficiently performed by increasing the surface filtering area contacting the filter when supply water is supplied.

At this time, the filter unit 100 is molded and manufactured integrally with the housing unit 200, or after the filter unit 100 and the material of the housing unit 200 are manufactured differently and the filter unit 100 is pre-processed. The pre-machined parts can be inserted into the molding mold of the filter and molded by an insert method.

And when the filter part 100 and the housing part 200 are made of different materials as described above, the filter part 100 is a metal material, and the housing part 200 may be made of engineering plastic which is a material having high hardness and low deformation. have.

In addition, the filter unit 100 may be manufactured by punching a metal plate material and manufacturing it by press molding or a metal material of a porous material in which a metal wire is woven into a shape protruding upwardly by press molding.

In addition, a flange 110 bent in a shape protruding to the outside may be formed on a lower edge of the filter unit 100, and the filter unit 100 is seated in a molding die using the flange 110, and then inserted The filter can be produced by injection molding by a method.

When the filter 1 is inserted into the inlet 10 of the water supply valve, the housing part 200 is tightly fitted to the inner diameter of the inlet to be assembled and formed along the circumference of the filter part 100 to support the rim and filter It is provided to protect the shape of the wealth.

To this end, the housing part 200 is connected to the edge wall 210 formed along the edge of the filter part 100 and the inner wall of the edge wall across the center of the edge wall, but is formed to protrude upward from the filter part. (220), is formed to protrude on the outer wall of the rim wall (210), the fastening protrusions (230) to have a fitting strength, and when assembling the filter, acts elastically in response to the inner diameter of the inlet and supports to prevent unilateral occurrence It may be configured to include a piece 240.

The edge wall 210 may be composed of a cylindrical wall vertically vertically erected along the outer edge of the filter unit 100, and the flange 110 of the filter unit 100 is fixed to the edge wall to filter. (1) may be integrally configured.

The handle 220 is provided with a connecting rod 222 so that both ends of the cylindrical border wall are connected to each other, and a gripping portion 226 having a gripping groove 224 protruding upwardly of the connecting rod 222 is formed. Can be.

The connecting rod 222 may be formed so that the lower surface is equivalent to the surface shape of the filter unit 100, and the edge wall 210 is supported by the connecting rod 222 so that the edge wall is not contracted inward.

In addition, the outer wall of the border wall 210 may be formed with a fastening protrusion 230 to protrude outward, the fastening protrusion 230 is in close contact with the inner wall of the inlet 10, the filter 1 is pressurized and fixed, It is possible to prevent the filter from being randomly separated in the assembled state.

The fastening protrusion 230 may be formed such that the fastening protrusion 230 protrudes outwardly of the edge wall 210 on the longitudinal extension line of the handle 220 to prevent deformation during assembly of the filter and secure fitting strength. .

In addition, the shape of the fastening protrusion 230 can be formed long vertically and downwardly to reduce frictional resistance when the filter is fastened. Thus, by forming the filter vertically long, it is easy to fit when the filter 1 is inserted into the inner diameter of the inlet. The inner wall and the fastening protrusion of the edge wall vertically and in close contact with each other in a line contact can maintain a firmly fixed state.

When the filter piece 1 is inserted into the inner diameter of the inlet 10, the support piece 240 is pressurized so that the filter 1 is inclined to either side or has a structure for preventing one-sided occurrence without deformation of the shape. In order to secure a variable range in operation, the handle portion 220 and the other line are formed symmetrically to the outside of the border wall 210 so that the filter can be assembled so that it does not tilt to one side.

In addition, incisions 242 are formed on both sides of the support piece 240, and protrusions 244 are formed to protrude outward at the upper end of the support piece, so that the support pieces elastically operate inwards and outwards, while being completely in close contact with the inner diameter of the inlet. The assembly can be made in a state.

At this time, the housing portion 200, as shown in Figures 8 and 9, the inner side of the border wall 210, the fastening protrusion 230 is formed is spaced apart from the filter unit 100 by the connecting rod 222 The filter 1 is inlet by allowing the support piece to be elastically operable by being molded in a filled state, and the inner wall of the edge wall where the support piece 240 is formed is spaced apart from the surface of the filter part. When inserting it, it is possible to prevent the occurrence of one side by the supporting piece 240 while securing the fitting strength by the fastening protrusion 230.

Therefore, it is possible to sufficiently compensate the allowable area of the general dimensional tolerance of the molded product, and to improve the foreign matter blocking efficiency without causing one-sided and deformation when assembling the filter to products with different dimensional tolerances.

In addition, the support piece 240 may be manufactured in a variety of shapes capable of elastic operation, it is possible to generate an effect of preventing one-sided generation by simply configuring symmetrically to both sides along the circumference of the border wall 210. .

As an example, the support piece 240 may be formed only on a part of the rim, and the incision portions 242 may be formed on both sides of the support piece to allow the elastic operation of the support piece 240 to be more efficiently performed. When the plurality of portions 242 is configured, the support piece 240 may be divided into several parts, so that the elastic force is weighted.

In particular, the support pieces 240 disposed on both the left and right sides of the handle around the handle 220 are configured symmetrically, so that it can be prevented from being fitted on one side, that is, inclined or obscured.

At this time, the support piece 240 is formed so that the surface of the filter portion 100 extends upward to a curved portion or an inclined portion, and forming a protrusion 244 outwardly at the upper end further increases the elasticity of the support piece The variable range of the support piece can be improved, and the allowable area of dimensional tolerance by molding manufacturing can be further compensated, and the one side can be further prevented and assembled and disassembled smoothly.

In addition, cutouts 232 may be formed on both sides of the fastening protrusion 230 so as to prevent the force applied to the fastening protrusion 230 from being transmitted to the other edge wall 210.

In this incision 232, even when the filter 1 is inserted into the inlet and the surface of the fastening protrusion 230 is pressed against the inner diameter of the inlet, deformation of the edge wall 210 may occur due to the pressing force. , It is possible to prevent the deformation of the shape of the edge wall 210 by preventing the force pressed by the incision 232 from being transmitted to other parts of the edge wall.

In addition, when the filter 1 is assembled to the inlet 10, the fastening protrusion 230 may be formed with an entry guiding surface 234 at the bottom to induce the entry of the filter, as shown in FIG. When the surface of the fastening protrusion 230 is formed to have the inclined surface 236, it is possible to further compensate the allowable area of the dimensional tolerance of the filter.

1: filter 2: auxiliary filter
10: Inlet 20: Outlet
30: flow path 40: valve body
100: filter unit 110: flange
200: housing 210: border wall
220: handle 222: connecting rod
224: gripping groove 226: gripping part
230: fastening protrusion 232: incision
234: Entry-guided surface 236: Slope
240: support piece 242: incision
244: protrusion

Claims (7)

The inlet 10 through which the supply water flows and the outlet 20 for supplying washing water to the washing machine are provided, and the fluid is blocked or opened in the flow path 30 connected to the inlet 10 and the outlet 20 to be connected. For the valve body 40 is mounted, the inlet (10) inside the valve body to prevent the inflow of foreign substances and to remove the filtered foreign matter filter (1) and the foreign matter not filtered by the filter In the washing machine water supply valve having a foreign matter prevention structure in which the safety filter (2) for filtering again is double,
The filter 1 includes a filter part 100 having pores and a housing part 200 for protecting a shape by supporting a rim of the filter part 100 in order to block foreign substances from entering,
The housing part 200 includes an edge wall 210 formed along the edge of the filter part, and a handle 220 that connects the inner wall of the edge wall across the center of the edge wall and protrudes upwards of the filter part, A fastening protrusion 230 formed to protrude from the outer wall of the rim wall 210 to have a fitting strength, and a support piece 240 for elastically acting in response to the inner diameter of the inlet when assembling the filter and preventing unilateral occurrence Washing machine water supply valve having a foreign matter prevention structure, characterized in that formed. The method according to claim 1, wherein the fastening protrusion 230 is provided with a fastening protrusion 230 on the outside of the edge wall 210 on the longitudinal extension line of the handle 220 to prevent deformation during assembly of the filter and secure fitting strength. It is formed to protrude, and the support piece 240 is formed to be symmetrical to the outside of the border wall 210 on a different line from the handle part 220 to secure a variable range, the incision on both sides of the support piece 240 (242) is formed and the upper end of the support piece is a washing machine water supply valve having a foreign matter prevention structure, characterized in that the protrusion 244 is formed. The method of claim 2, wherein the filter unit 100 is made of a hemispherical porous material made of a metal material, a flange 110 is formed at the bottom thereof, and the housing unit 200 inserts the filter unit 100 into a mold. A water supply valve for a washing machine having a foreign matter prevention structure, characterized in that it is an injection-molded product integrally formed by insert molding while supporting a flange. The method according to claim 2, wherein the fastening protrusion 230 is vertically and vertically outside the border wall 210 so as to reduce the frictional resistance when the filter is fastened, so that it is easy to fit and maintains a firmly fixed state by line contact. Long fastening protrusions are formed,
The support piece 240 is formed to be formed so as to improve the variable range of the support piece is formed by extending the upper portion of the surface of the filter portion 100 upwards to the curved portion to the outside of the upper end is formed 244 Washing machine water supply valve having a. The method according to claim 4, characterized in that incision portions (232) are formed on both sides of the fastening protrusion (230) so that even when the outer surface of the fastening protrusion (230) is pressed, the pressed insects are not transmitted to other edge walls. Washing machine water supply valve having a foreign body prevention structure. 6. The washing machine water supply valve according to claim 5, wherein the fastening protrusion (230) is provided with an entry guiding surface (234) for guiding entry when assembling the filter. 7. The washing machine water supply valve according to claim 6, wherein the fastening protrusion (230) is formed with an inclined surface (236) to further compensate for an allowable area of dimensional tolerance.

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