KR19990084748A - Drainage structure of washing machine - Google Patents

Abstract

The present invention relates to a washing machine, and more particularly, to a water level sensor connected to an air chamber, which can drain the wash water supplied to the air chamber by combining a drainage hose and an opening / closing valve assembled with an extension tube of the air chamber. It is designed to detect the level of wash water by

A drain formed in the extension pipe of the air chamber to discharge the wash water supplied to the air chamber of the washing machine to the outside, a drain pipe formed in the drain housing coupled to the extension pipe to guide the wash water supplied to the drain to the outside, and the drain pipe Combination of the coupling pipe formed in the drainage housing with a built-in valve for draining the wash water drained to the drain hose by the opening and closing action of the opening and closing valve, and the drain pipe for coupling the drain pipe of the drain housing to the extension pipe of the air chamber It provides a drainage structure of a washing machine characterized by having a means.

Description

Drainage structure of washing machine

The present invention relates to a washing machine, and more particularly, to a water level sensor connected to an air chamber, which can drain the wash water supplied to the air chamber by combining a drainage hose and an opening / closing valve assembled with an extension tube of the air chamber. It relates to a drainage structure of the washing machine to be able to detect the level of the wash water.

The drainage structure and the water level detection structure of the conventional washing machine 1 are shown in Figs.

That is, the air chamber 7 connected to the water level sensor 9 and the connection pipe 8 so as to detect the level of the wash water on one side of the tub 3 of the washing machine 1, and the extension pipe of the air chamber 7 Air chamber cap 11 to be coupled to the (10), a drain hole (12) formed to discharge the wash water on the bottom surface of the outer tub (3) to which the air chamber cap 11 is coupled, and the drain hole (12) Drain pipe 21 formed in the drainage housing 13 receives the wash water from the), the screw hole 13 formed in the outer tub 3 to couple the drain pipe 21 to the outer tub 3, and An insertion hole 24 formed in the flange 23 of the drain pipe 21 so as to coincide with the screw hole 13, a screw 28 inserted into the insertion hole 24 and fastened to the screw hole 13, and Supplying the wash water to the drain hose 22, which receives the wash water supplied to the drain pipe 21 by the fastening of the vis 28 by the opening / closing action of the opening / closing valve 18, and the drain hose 22. To a structure having a multiple Motor 14 is connected to the pivot link 15 to operate the closing valve (18).

Referring to the operation and effect according to the configuration of the conventional washing machine 1 as described above are as follows.

First, in the washing machine 1, the motor 6 rotates the driving shaft 5, and the driving shaft 5 rotates the washing blade 4 coupled to the bottom of the inner tub 2, thereby forming the inner tub 2. You will be washing the laundry in.

In addition, during the washing process of the laundry, the draining motor 14 operates to discharge the washing water supplied from the drain hole 12 to the outside of the washing machine 1 by the drain hose 22.

At this time, the washing water is supplied to the inside of the coupling pipe 20 connected to the pivot link 15 and the first elastic member 16 when the power supply drainage motor 14 is operated to pull the pivot link 15. The open / close valve 18 is retracted toward the drain motor 14.

In addition, the inlet of the drain hose 22 is opened due to the retraction of the on-off valve 18, and the washing water is supplied from the drain pipe 21 to the inlet of the open drain hose 22 to be washed outside of the washing machine 1. It will drain the water.

In addition, when the drainage of the wash water is completed, the operation of the drainage motor 14 is stopped to pull the pivot link 15 is lost.

In addition, when the pulling force of the drainage motor 15 is lost, the opening / closing valve 18 closes the inlet of the drain hose 22 again due to the restoring force of the second elastic member 17.

On the other hand, the wash water is prevented from leaking to the coupling portion between the outer tub 3 and the flange 23 by the sealing member 25 coupled between the outer tub 3 and the flange 23 of the drain pipe 21. Done.

In addition, the washing machine 1 as described above forms an air chamber 7 on one side of the outer tub 3 to detect the level of the wash water, and connects the air chamber 7 and the water level sensor 9 to the pipe. (8).

That is, the air chamber 7 is filled with a predetermined amount of air, and the pressure of the water level of the washing water acts on the air of the air chamber 7.

In addition, the pressure delivered to the air inside the air chamber 7 is transferred to the water level sensor 9 connected to the upper portion of the air chamber 7 and the connection pipe 8 to sense the pressure of the air to level the wash water. Will be detected.

However, an extension tube 10 through which a mold for forming the air chamber 7 exits is formed at the bottom of the air chamber 7 for detecting the level of the wash water as described above.

In order to prevent the wash water from escaping into the extension tube 10, an air chamber cap 11 was formed and welded to the extension tube 10 of the air chamber 7.

In addition, to drain the wash water to the outside of the washing machine (1) was made separately to the drain hole (12).

Therefore, due to the process of forming the air chamber cap 11, the welding process of coupling the extension tube 10 and the air chamber cap 11, and the manufacturing process of forming the drain hole 12 separately, etc. 3) had an uncomfortable and cumbersome problem in the production.

An object of the present invention for solving and solving such a conventional problem,

By combining the drain pipe of the drain housing with the extension pipe of the air chamber, the wash water supplied to the air chamber can be drained to the outside by the drain hose of the drain housing and at the same time the water level of the wash water by the water level sensor connected to the air chamber and the connection pipe. It provides the purpose of detecting the.

In order to achieve the above object, the present invention,

It is possible to achieve the object of the present invention by forming a male screw portion in the extension tube of the air chamber and forming a flange in the drain tube of the drainage housing so as to couple the extension tube and the drain tube to the coupling hole in which the female thread portion is formed.

1 is a cross-sectional view showing a drainage structure and a water level detection structure coupled to a conventional washing machine

Figure 2 is a partial enlarged cross-sectional view showing the operating state of the drainage housing coupled to the conventional washing machine

Figure 3 is a cross-sectional view showing the drainage structure and the water level detection structure coupled to the present invention washing machine

Figure 4 is an enlarged partial cross-sectional view showing an operating state of the drainage housing coupled to the washing machine of the present invention

<Code Description of Main Parts of Drawing>

101-Washing Machine 103-Outtub

107-Connector 108-Water Level Sensor

111-Air Chamber 112-Extension Tube

113-Male thread 114-Drain

121-Drainage Motor 122-Pivot Link

123-First elastic member 124-Second elastic member

125-Valve 131-Drainage housing

132-Union tube 133-Drain hose

134-Drainpipe 135-Flange

141-Coupler 142-Jam Jaw

143-Female thread 144-Sealing member

The configuration of the present invention will be described in detail with reference to Figs.

That is, in order to discharge the wash water supplied to the air chamber 111 of the washing machine 101 to the outside, the drain port 114 formed in the extension pipe 112 of the air chamber 111 and the laundry supplied to the drain port 114. The drain hose 134 formed in the drain housing 131 coupled to the extension pipe 112 and the washing water drained to the drain pipe 134 by the opening / closing valve 125 to open / close the drain hose 134. An extension pipe of the air chamber 111 may include a coupling pipe 132 formed in the drainage housing 131 having the on-off valve 125 built therein so as to be drained to the drainage tube 133, and the drainage pipe 134 of the drainage housing 131. The coupling means of the drain pipe 134 for coupling to 112.

And, the coupling means of the drain pipe 134 and the flange 135 formed in the drain pipe 134 in contact with the male thread portion 113 formed in the extension pipe 112, the extension pipe 112 is formed with the male thread portion 113. In order to squeeze the flange 135, the coupling port 141 is formed with a locking jaw 142 is coupled to the drain pipe 134, and the flange 135 and the extension tube 112 by the rotation of the coupling port 141. It was provided with a female screw portion 143 formed in the coupler 141 is fastened to the male screw portion 113 of the extension tube 112 so as to be in close contact with.

In addition, the sealing member 144 is further provided between the extension pipe 112 and the flange 135 of the drain pipe 134 in order to prevent the wash water leakage to the coupling portion of the extension pipe 112 and the drain pipe 134. It was.

Referring to the operation of the present invention as described above is as follows.

First, in the washing machine 101, the motor 106 rotates the drive shaft 105, and the drive shaft 105 rotates the washing blade 104 coupled to the bottom of the inner tub 102, thereby forming the inner tub 102. You will be washing the laundry in.

The washing machine 101 as described above detects the level of the wash water by the air chamber 111 formed on one side of the tub 103.

That is, the wash water supplied to the air chamber 111 transmits the pressure according to the level of the wash water to the air inside the air chamber 111.

Then, the air received the pressure of the wash water is passed through the connection pipe 107 to transfer the pressure to the water level sensor 108, the water level of the wash water is sensed by the water level sensor 108.

In order to detect the water level as described above, the air chamber 111 is supplied with the washing water to the extension tube 112 formed when manufacturing the outer tub 103, the drain hose 133 and the opening and closing valve 125 assembled as a drain housing ( 131) is combined to the drainage process.

That is, the wash water supplied to the extension pipe 112 is supplied to the drain pipe 134 of the drain housing 131 and the wash water supplied to the drain pipe 134 is drained by an opening / closing action of the on / off valve 125. Supplied to 133 is discharged to the outside of the washing machine 101.

Then, the opening and closing valve 125 for opening and closing the inlet of the drain hose 133 is the opening and closing valve 125 is the first elastic member 123 when the drain motor 121 is operated to pull the pivot link 122. It is connected to the pivot link 122 by the retracted in the direction of the drain motor 121.

At this time, when the on-off valve 125 is retracted, the inlet of the drain hose 133 is opened to receive the wash water from the drain pipe 134 to discharge the wash water to the outside.

In addition, when the drainage of the wash water is completed, the draining motor 121 releases the pivot link 122 that has stopped the operation, and when the force of the pivot link 122 pulling the on / off valve 125 disappears, the second elasticity is lost. Due to the restoring force of the member 124, the on-off valve 125 closes the inlet of the drain hose 133 again.

On the other hand, the drain pipe 134 receiving the wash water from the extension pipe 112 is coupled to the extension pipe 112 by the fastening force of the coupling port 141 to drain the wash water to the outside of the washing machine 101.

That is, the flange 135 formed on the extension pipe 112 and the drain pipe 134 is in contact with each other, and the coupling hole 141 having the locking jaw 142 is coupled to the flange 135.

In addition, the female screw portion 143 and the male screw portion 113 formed on the extension pipe 112 are rotated and coupled to each other so that the extension pipe 112 and the drain pipe 134 are coupled to each other.

At this time, the flange 135 of the drain pipe 134 is in close contact with the engaging jaw 142 formed in the coupling hole 141 to closely couple the extension pipe 112 and the drain pipe 134.

In addition, by the sealing member 144 coupled between the extension pipe 112 and the flange 135 of the drain pipe 134 to prevent the wash water leakage to the coupling portion.

As described above, the outer tube 103 in which the air chamber 111 of the present invention detects the water level of the washing water and performs the drainage process does not need to be sealed by forming a conventional air chamber cap with an extension tube 112.

That is, since it is sealed by the opening and closing valve 125 for sealing the inlet of the drain hose 133 assembled to the drain housing 131, there is no need for a conventional air chamber cap and welding process.

In addition, it is not necessary to form a separate drain hole for draining the wash water in the outer tub (103).

According to the present invention, a male screw portion is formed in the extension pipe of the air chamber, and a flange is formed in the drain pipe of the drainage housing. The wash water can be drained to the outside by the drainage hose of the drainage housing, and at the same time, the water level sensor connected to the air chamber and the connection pipe has a useful effect of detecting the wash water level.

Claims (3)

A drain hole formed in the extension pipe of the air chamber to discharge the washing water supplied to the air chamber of the washing machine to the outside; A drain pipe formed in the drainage housing coupled to the extension pipe to guide the washing water supplied to the drain to the outside; A coupling pipe formed in the drainage housing in which the on / off valve is built so that the washing water drained to the drain pipe can be drained to the drain hose by the on / off action of the on / off valve; And a coupling means of the drain pipe for coupling the drain pipe of the drain housing to the extension pipe of the air chamber. The method of claim 1, Coupling means of the drain pipe is a male screw portion formed in the extension pipe; A flange formed on the drain pipe in contact with the extension pipe formed with the male thread part; A coupling hole formed with a locking step coupled to the drain pipe to press the flange; The drainage structure of the washing machine, characterized in that provided with a female screw portion formed in the coupler is fastened to the male screw portion of the extension tube to close the flange and the extension tube by the rotation of the coupler. The method of claim 2, The drainage structure of the washing machine further comprises a sealing member coupled between the flange of the extension pipe and the drain pipe in order to prevent the wash water leakage to the coupling portion of the extension pipe and the drain pipe.