KR20030092201A - The plunger valve assembly of a washer - Google Patents

Abstract

PURPOSE: A drain valve assembly of a washing machine is provided to prevent leakage of water by sealing a valve case and a valve cover efficiently with engaging first and second ribs with a third rib in assembling the valve case with the valve cover. CONSTITUTION: A drain valve assembly for a washing machine comprises a valve case(60) installed between a dehydrating tub and a drain pipe; bellows(70) installed in the valve case and opened or closed elastically to regulate drainage of washing water; a valve cover(80) mounted at the side of the valve case to support the bellows; and a leakage restricting unit(90) formed between the valve case and the valve cover to prevent leakage of washing water by sealing the gap between the valve case and the valve cover. The leakage restricting unit has a first rib(92) protruded around the valve cover, a second rib(94) protruded around the inner concentric circle and spaced from the first rib, and a third rib(96) formed in the valve case.

Description

The plunger valve assembly of a washer}

The present invention relates to a drain valve assembly of a washing machine, and more particularly, to a drain valve assembly of a washing machine capable of preventing leakage of wash water by sealing between a valve case and a valve cover when the valve cover is fastened to the valve case.

In general, a washing machine is a machine that removes stains on laundry by applying a mechanical action using electricity to form a rotary flow in the wash water.

1 is a cross-sectional view showing a washing machine according to the prior art, Figure 2 is an exploded perspective view showing a drain valve of the washing machine according to the prior art, Figure 3 is a view showing a partial cutaway of the drain valve of the washing machine according to the prior art. .

The conventional washing machine includes a dehydration tank 6 installed to hang inside the case 4 as shown in FIG. 1, and a washing tank 8 rotatably installed in the dehydration tank 6 to wash laundry. Washing wings (10) rotatably installed on the bottom surface of the washing tank (8) to form a rotary flow in the wash water, and the washing tank (8) and washing wings (10) are mounted below the dehydrating tank (6). It consists of a clutch 12 and a motor 14 to selectively rotate.

In addition, a detergent box 16a, a detergent box housing 16b, and a water supply valve 18 are installed above the case 4 to supply detergent and washing water into the washing tank 8 and the dehydrating tank 6. In the lower part of the dehydration tank 6, a drain valve 22 and a drain pipe 27 through which the wash water is drained are installed.

Here, the drain valve 22 is connected by a drain motor (not shown) and a drain motor lever (not shown) fixed to the lower side of the dehydration tank 8 to adjust the drainage of the wash water.

In particular, the drain valve 22 has a valve inlet 32 and a valve outlet 34 and a mounting hole 36 through which the wash water flows in and out as shown in FIG. 2, so that the valve inlet 32 is connected to the dehydration tank. (6) The valve case 30 mounted in the drain hole (h) formed in the bottom surface and the flow path inside the valve case 30 is installed inside the valve case 30 so that the wash water can be drained elastically. A bellows 40 for opening and closing, and a valve cover 50 mounted to the mounting hole 36 of the valve case 30 to support the bellows 40.

In addition, the bellows 40 supports valve springs 42a and 42b for providing an elastic force to the bellows 40 and one end of the valve spring 42a and the other end is connected to a drain motor lever (not shown). The valve rod 44 is installed.

Here, when the valve cover 50 is installed on one side of the valve case 30, the one end portion of the bellows 40 is fixed to the valve case 50 by pressing and fixing the portion of the valve spring 42a. The other end is supported, and a hole 50h is formed in the center portion to guide the valve rod 44 toward the motor lever (not shown).

Therefore, when the drain motor (not shown) is operated, the drain motor lever (not shown) connected to the drain motor (not shown) is pulled toward the drain motor (not shown), and the springs 42a and 42b and the bellows ( 40 is compressed to open the drain valve 22.

The drain valve 22 is closed while the drain motor lever (not shown) and the bellows 40 are returned to their original positions by the elastic force of the springs 42a and 42b.

However, in the drain valve assembly of the washing machine according to the prior art, a portion around the end of the bellows 40 is squeezed and fixed between the valve case 30 and the valve cover 50. There is a problem that the wash water leaks.

The present invention has been made to solve the above problems of the prior art, an object of the present invention to provide a drain valve assembly of a washing machine to prevent the wash water leakage by improving the sealing effect between the valve case and the valve cover.

1 is a cross-sectional view showing a washing machine according to the prior art,

Figure 2 is an exploded perspective view showing a drain valve of the washing machine according to the prior art,

3 is a view showing a partial cutaway drain valve of the washing machine according to the prior art,

4 is an exploded perspective view showing a first embodiment according to the present invention;

5 is a partial cutaway view of a first embodiment according to the present invention;

6 is a partial cutaway view of a second embodiment according to the present invention;

7 is a partial cutaway view of a third embodiment according to the present invention;

8 is a partially cutaway view showing a fourth embodiment according to the present invention.

<Explanation of symbols on main parts of the drawings>

60: valve case 66: mounting hole

70: bellows 80: valve cover

90: leak prevention means 92: first rib

94: second rib 96: third rib

The drain valve assembly of the washing machine according to the present invention for solving the above problems is a valve case installed between the dehydration tank and the drain pipe, and the bellows is installed to be opened and closed elastically inside the valve case and to control the drainage of the wash water; And a valve cover installed at one side of the valve case to support the bellows and formed between the valve case and the valve cover to seal between the valve case and the valve cover to prevent leakage of wash water. It is configured by.

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

4 is an exploded perspective view illustrating a first embodiment according to the present invention, and FIG. 5 is a partially cutaway view of the first embodiment according to the present invention.

The drain valve assembly of the washing machine according to the present invention is provided with a valve inlet 62 and a valve case 60 formed with a valve inlet 62 and a valve outlet 64 and mounting holes 66 through which wash water flows in and out, as shown in FIG. 4. The valve inlet 62 is installed at the drainage hole h formed at the bottom of the dehydration tank 8, and the valve outlet 64 is installed to be connected to the drainage pipe 27, and inside the valve case 60. The bellows 70 made of rubber material for opening and closing the flow path inside the valve case 60 is installed at the same time, and the bellows 70 is mounted in the mounting hole 66 of the valve case 60. Sexually supported valve cover 80 is installed.

Here, reference numerals not described in FIGS. 4 and 5 refer to reference numerals illustrated in FIG. 1.

In addition, the bellows 70 supports the valve springs 72a and 72b for providing an elastic force to the bellows 70 and one end of the valve springs 72a and 72b and the other end of the valve cover 80. A valve rod 74 connected to a drain motor lever (not shown) is installed through the hole 80h formed at the center.

In particular, leakage of the wash water between the valve case 60 and the valve cover 80 to seal between the valve case 60 and the valve cover 80 when the valve case 60 and the valve cover 80 are coupled to each other. In order to prevent the leakage preventing means 90 is formed.

Here, the leakage preventing means 90 is a first rib 92 protruding along a concentric circle in the circumferential portion of the valve cover 80 coupled with the valve case, as shown in Figure 5, the first rib A second rib 94 protruding along the inner concentric circle at a predetermined distance from the 92, and a protruding concentric circle on the valve case 60 corresponding to between the first and second ribs 92 and 94; It consists of three ribs 96.

That is, when the valve cover 80 is mounted to the valve case 60, the valve cover 80 and the valve case 80 are engaged with each other so that the first and second ribs 92 and 94 and the third rib 96 are engaged with each other. It is formed at 60.

The first and second ribs 92 and 94 and the third rib 96 may be formed in a triangular cross-section, but may be formed in various shapes such as a quadrangle or a semi-circle.

Meanwhile, a plurality of fixing protrusions 66a protruding in a radial direction are formed on an outer circumference of the mounting hole 66 of the valve case, and the valve cover 80 corresponding to the fixing protrusion 66a of the valve case 66 is formed. A plurality of fixing grooves (80a) are formed in the.

Therefore, when the mounting hole 66 side of the valve case is inserted into the valve cover 80 and rotates in one direction, the fixing protrusion 66a is caught by the fixing groove 80a to allow the valve to be connected to the valve case 60. The cover 80 is mounted.

At the same time, the valve cover 80 is mounted to the valve case 60 so that the end portion of the bellows 70 is inserted into the coupling portion of the valve case 60 and the valve cover 80. An end circumferential portion of the bellows 70 is also inserted between the first and second ribs 92 and 94 and the third rib 96 to seal between the valve case 60 and the valve cover 80.

Figure 6 is a partially cut view of the second embodiment according to the present invention.

The second embodiment according to the present invention has the same configuration as that of the first embodiment as shown in FIG. 6, but the periphery of the end of the valve case 60 in which the leak preventing means 100 is coupled with the valve cover 80. A first rib 102 protruding along a concentric circle, a second rib 104 protruding along an inner concentric circle at a predetermined distance from the first rib 102, and the first and second ribs 102 and 104. And a third rib 106 protruding along the concentric circle to the valve cover 80 corresponding to the gap.

Figure 7 is a partially cut view of the third embodiment according to the present invention.

The third embodiment according to the present invention also has the same configuration as the first embodiment as shown in FIG. 7, but the bellows 70 in which the leak preventing means 110 is located between the valve case 60 and the valve cover 80. The first and second ribs 112 and 114 protruding toward the valve cover 80 along the respective concentric circles at predetermined intervals at the end portions of the ends) and the first and second ribs 112 and 114. Consists of a third rib 116 protruding toward the valve case 30 along a concentric circle on the end portion of the bellows 70.

8 is a partially cutaway view showing a fourth embodiment according to the present invention.

The fourth embodiment according to the present invention also has the same configuration as that of the first embodiment as shown in FIG. 8, but the bellows 70 in which the leak preventing means 120 is located between the valve case 60 and the valve cover 80. The first and second ribs 122 and 124 protruding toward the valve case 60 along the respective concentric circles at predetermined intervals at the end portions of the ends), and being positioned between the first and second ribs 122 and 124. It is composed of a third rib 126 protruding toward the valve cover 80 along the concentric circle in the end portion of the bellows 70.

That is, since the first and second ribs and the third rib are formed in the valve case or the bellows or the valve cover, the first and second ribs and the third rib are ductile when the peripheral portion of the bellows is inserted between the valve case and the valve cover. There is a double sealing effect by interlocking with a relatively large bellows of rubber material in the middle.

The drain valve assembly of the washing machine according to the present invention constituted as described above has a first rib, a second rib, and a third rib formed in the valve case or the valve cover or the bellows so that the end portion of the bellows is inserted between the valve case and the valve cover. When the case and the valve cover are combined, the first and second ribs and the third rib engage with each other with the bellows interposed therebetween, thereby improving the sealing effect and sealing between the valve case and the valve cover to prevent leakage of the wash water. have.

Claims (8)

A valve case installed between the dewatering tank and the drain pipe, A bellows which is installed to be opened and closed elastically inside the valve case and controls the drainage of the washing water; A valve cover installed at one side of the valve case to support the bellows; And a leakage preventing means formed between the valve case and the valve cover to seal between the valve case and the valve cover to prevent leakage of the wash water. The method of claim 1, The leakage preventing means is composed of first and second ribs projecting in the circumferential direction at regular intervals on the valve cover, and third ribs projecting in the circumferential direction on the valve case corresponding to the first and second ribs, The drain valve assembly of the washing machine, characterized in that the end portion of the end of the bellows is inserted between the first and second ribs and the third rib. The method of claim 1, The leakage preventing means is composed of first and second ribs protruding in the circumferential direction at regular intervals in the valve case, and third ribs protruding in the circumferential direction on the valve cover corresponding to the first and second ribs, The drain valve assembly of the washing machine, characterized in that the end portion of the end of the bellows is inserted between the first and second ribs and the third rib. The method of claim 1, The leak preventing means may correspond to the first and second ribs protruding toward the valve case at predetermined intervals around the end portion of the bellows positioned between the valve cover and the valve case and between the first and second ribs. The drain valve assembly of the washing machine, characterized in that consisting of a third rib protruding toward the valve cover in the peripheral portion of the end of the bellows. The method of claim 1, The leak preventing means may correspond to the first and second ribs protruding toward the valve cover at predetermined intervals around the end portion of the bellows positioned between the valve cover and the valve case, and between the first and second ribs. Drain valve assembly of the washing machine, characterized in that consisting of a third rib protruding toward the valve case in the peripheral portion of the end of the bellows. The method according to any one of claims 2 to 5, The first, second ribs and third ribs drain valve assembly of the washing machine, characterized in that the cross-sectional shape of the triangle. The method according to any one of claims 2 to 5, The first, second ribs and the third rib of the drain valve assembly of the washing machine, characterized in that the cross-sectional shape is a semicircle. The method according to any one of claims 2 to 5, The first, second ribs and the third rib of the drain valve assembly of the washing machine, characterized in that the cross-sectional shape is rectangular.