KR100223414B1 - The filter apparatus of a washing machine - Google Patents

Abstract

The present invention relates to a locking structure of a foreign matter trapping device for a washing machine, wherein a filter case is radially installed on an inner wall of a washing tank, and the filter case is detachably mounted on the filter case to collect foreign substances generated from laundry during a laundry administration. And a foreign matter trapping device is formed, and a filter installed in the washing tank is provided in the upper part of the filter by locking means having a predetermined elasticity to prevent the filter from being separated from the filter case according to the collision of the laundry. The filter mounted on the square hole of the case can be easily removed, and the separation of the filter due to the collision of the laundry during washing administration can be prevented.

Description

Locking structure of foreign material trapping device for washing machine

The present invention relates to a locking structure of a foreign material filtering device for a washing machine, and more particularly, to improve the structure of a filter detachably mounted to a filter case so as to prevent separation of the filter due to a collision of laundry during washing administration. A locking structure of a foreign material trapping device.

In general, the fully automatic washing machine is mounted on the bottom surface of the outer tub 12 and the outer tub 12 for storing the wash water installed inside the main body 10 and the inner side thereof to form the washing machine as shown in FIG. The power transmission device 18 receives the driving force of the motor 14 via the belt 16.

Inside the outer tank 12 is provided with a dehydration tank 20 for dewatering the laundry by centrifugal force due to the rotation of the power transmission device 18, the upper portion of the outer tank for maintaining the horizontal of the dehydration tank 20 when dewatering the laundry. A balancer 22 is installed, and a pulsator coupled to the power transmission device 18 to make a special water flow on the bottom surface of the dewatering tank 20 through the water inlet 24 ( 26 is rotatably imparted.

In addition, the lower one side of the outer tank 12 is provided with a drain 28 for discharging the contaminated washing water during the washing and rinsing process, the inner wall of the dehydration tank 20 in the rising water flow due to the rotation of the pulsator 26 In order to filter the foreign matter of the laundry flowing by the foreign matter trapping apparatus shown in Figure 2 is installed radially.

The foreign matter trapping device is composed of a filter case 30 fixedly installed on the inner wall of the dehydration tank 20 and a filter 32 detachably coupled to the inside thereof, and the filter 32 has a handle portion 34a at an upper side thereof. And a front cover 34 and a rear cover 36 hinged thereto, and the front and rear covers 34 and 36 have one side to discharge the washing water into the dehydration tank 20 and at the same time, Filtering nets 38 and 40 are attached respectively for filtering.

A check valve 42 is installed between the front and rear covers 34 and 36 to prevent the collected foreign matter from being discharged to the outside. The check valve 42 is a filter 32 for draining the wash water. ) A plurality of fixing parts provided at one end of the backflow prevention part 42a and the backflow prevention part 42a to prevent the discharge of the foreign matter collected in the slit hole 36a formed in the rear cover 36. And a guide plate 42c attached to 42b and an end thereof so as to insert the fixing portion 42b into the slit hole 36a.

The conventional fully automatic washing machine configured as described above opens a door (not shown) provided in the upper part of the main body 10, and then puts laundry and detergent into the dehydration tank 20, and then supplies a certain amount of washing water through the water supply port 24. When the driving motor 14 is operated in the state, the driving force of the driving motor 14 is transmitted to the power transmission device 18 by the belt 16, and at the same time, the power transmission device 18 decelerates the rotational force and then pulsates it. The eater 26 is rotated to generate water flow in the dehydration tank 20.

That is, the washing water supplied in the dehydration tank 20 in accordance with the rotation of the pulsator 26 creates a water flow up and down by centrifugal force to perform the washing process. At this time, the water flow is pushed to the inner wall of the dehydration tank 20 and at the same time as it rises along the inlet of the filter case 30 and the filter net 38, 40 and the filter case (attached to the front and rear covers 34, 36). 30 is discharged to the dehydration tank 20 through the outlet hole 30a, and the foreign matter collected in the front and rear covers 34 and 36 is pushed upward and collected from the top of the filter 32 toward the bottom. The state proceeds.

Then, when the drainage after the end of washing, the reverse flow prevention portion of the check valve 42 bent so that one end is in contact with the inner circumferential surface of the rear cover 36 by the ejection pressure of the washing water discharged back through the inlet of the filter 32 ( As 42a) is returned to the initial state, the foreign matter is stacked in order as the foreign matter is prevented from leaking into the dehydration tank 20, and the contaminated washing water is drained through the drain hole 28.

When the drainage is completed, the washing water for rinsing is again supplied to the water level required for rinsing through the water supply port 24, and the pulsator 26 is clocked and counterclockwise by the driving force of the power transmission device 18 as described above. Rinse the dirt and detergent from the laundry while rotating in the direction.

In this way, when the final rinsing stroke is repeated by repeating the rinsing cycle a plurality of times, the wash water stored in the outer tub 12 and the dehydrating tank 20 is drained through the drain hole 28, and the power transmission device 18 is then driven at a high speed in one direction. Dehydrate the wash water that permeates the laundry while rotating.

However, since the filter for collecting the foreign matter of the laundry as described above was pushed downward on the filter case, the filter was separated and the removal of the collected foreign matter was inconvenient, and the removal time was delayed.

The present invention is to solve the above problems, an object of the present invention is to easily separate the filter mounted on the filter case installed in the washing tank, improve the structure of the filter according to the collision of the laundry during the laundry administration It is to provide a locking structure of the foreign matter trapping device for a washing machine that can prevent the separation of the filter.

1 is a cross-sectional view showing the internal structure of a washing machine according to the prior art.

Figure 2 is an exploded perspective view showing a foreign matter trapping device applied to the washing machine of Figure 1,

3 is an exploded perspective view showing a foreign matter trapping device for a washing machine according to the present invention;

Figure 4 is a cross-sectional view of the foreign matter trapping apparatus shown in FIG.

Figure 5 is an enlarged cross-sectional view showing the main portion of the locking structure in the foreign matter trapping apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

60: filter case 60a: square hole

60b: inlet hole 60c: insertion hole

60d: Jam Jaw 62: Filter

64,66: strainer 68,70: front and rear cover

68a: discharge hole 70a: receiving groove

72: locking means 74: pressing part

76: locking protrusion 78: release prevention protrusion

80: check valve

Features of the present invention for achieving the above object, the filter case is radially installed on the inner wall of the washing tank, the filter case is detachably mounted filter for collecting the foreign matter generated in the laundry during the washing administration A foreign matter trapping device is configured, and the upper part of the filter is achieved by providing locking means having a predetermined elasticity to prevent the filter from being separated from the filter case due to the collision of the laundry.

The locking means according to the preferred embodiment of the present invention is provided with a locking part integrally formed on the front cover of the filter and a locking protrusion protruding to both sides of the pressing part to lock and release the locking jaw of the filter case. Is achieved.

Hereinafter, a preferred embodiment of the locking structure of the foreign material filtering device for a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 is a view showing the locking structure of the foreign matter trapping device according to the present invention, the bottom surface of the outer tank 12 including the dehydration tank 20 receives a driving force of the drive motor 14 while rotating the special The pulsator 26 is installed to wash the water by washing the water stream, and a debris trapping device for filtering foreign substances generated in the laundry during the washing operation is installed in a radial shape on the inner wall of the dehydration tank 20.

The foreign matter trapping device is composed of a filter case 60 formed with a rectangular rectangular hole 60a and a pocket-shaped filter 62 for collecting foreign matters by being detachably mounted forwardly with respect to the rectangular hole 60a. The inflow hole 60b is formed in the bottom surface of the rectangular hole 60a of the case 60 so that the water flow generated by the pulsator 26 passes. In addition, an insertion hole 60c communicating with the square hole 60a and a latching jaw 60d are formed on both sides thereof in order to easily separate the filter 62 from the front upper part of the filter case 60.

The filter 62 discharges the washing water introduced through the inflow hole 60b into the dehydration tank 20 and simultaneously filters the front and rear filtering nets 64 and 66 to collect foreign substances generated in the laundry. The front cover 68 is attached to the rear cover 70 coupled thereto, and the upper portion of the front cover 68 has a predetermined elasticity to lock and release the filter 62 in the filter case 60. The locking means 72 is provided, and the discharge hole 68a is provided at the lower portion of the locking means 72 so that the water flows up along the flow path P formed when the filter case 60 is installed to be converted into a waterfall flow. Is formed.

The locking means 72 is provided with a pressing portion 74 integrally formed on the front cover 68 and a locking protrusion 76 protruding to both sides thereof and caught by the locking jaw 60d of the filter case 60. An accommodating groove 70a is formed in the inner lower portion of the rear cover 70, and an escape preventing protrusion 78 is integrally formed on the bottom and the wall of the accommodating groove 70a, and the filter is disposed in the receiving groove 70a. A check valve 80 made of rubber material is fitted to block foreign matter collected in 62 from being discharged into the dehydration tank.

The operation of the locking structure of the foreign matter trapping device of the washing machine according to the present invention configured as described above will be described in detail with reference to FIG. 5.

A filter 62 comprising a front cover 68 and a rear cover 70 coupled thereto in the filter case 60 after fixing and installing a plurality of filter cases 60 on the inner wall of the dewatering tank 20. To be fitted. That is, when the filter 62 is inserted in front of the square hole 60a of the filter case 60 and then placed vertically, the locking projection 76 of the locking means 72 is pushed in accordance with the locking step 60d. 74 is moved downwards, and when the mounting is completed, the pressing portion 74 is returned to the initial state again so that the locking of the filter 62 is completed to prevent the separation of the filter 62 due to the collision of the laundry. will be.

Thereafter, when the driving motor 14 is operated, the driving force thereof is transmitted to the power transmission device 18 to rotate the pulsator 26 built in the bottom surface of the dehydration tank 20 to start the washing operation while making water flow. do. That is, the water flow generated by the centrifugal force due to the rotation of the pulsator 26 is raised along the inlet hole 60b of the filter case 60 while being pushed to the inner wall of the dehydration tank 20, so that the front and rear covers 68 ( A stream of water flowing along the flow path P formed between the dehydration tank 20 and the filter case 60 is discharged to the dehydration tank 20 through the strainer 64 and 66 attached to the front side 70. It is converted into a waterfall stream by the discharge hole (60c) provided in the cover 60 is discharged to increase the washing efficiency.

At this time, the check valve 80 fitted in the receiving groove 70a of the rear cover 70 is bent to the inner surface of the rear cover 70 by the upward pressure of the water flow to collect foreign substances generated in the laundry.

Then, when the washing operation is completed and the washing water is drained, the check valve 80 contacting the inner circumferential surface of the rear cover 70 is returned to the initial state by the ejection pressure of the washing water flowing back through the inlet of the filter 62 and the foreign matter. Blocking the outflow to the inside of the dehydration tank 20 again, and when the drainage is completed, the washing water is supplied through the water supply port 24, and the rinsing stroke and the dehydration stroke are sequentially performed to dehydrate the wash water.

In addition, when removing the filter 62 mounted on the filter case after the dehydration stroke, and put the finger into the insertion hole (60c) of the filter case 60, and pull the filter 62 forward while pressing, the front cover ( At the same time as the pressing portion 74 of the 68 is moved downward, the locking projection 76 locked to the locking jaw 60d is released, so that the filter 62 can be easily removed from the front of the filter case 60. will be.

As described above, according to the locking structure of the foreign material cleaning device for a washing machine according to the present invention, the filter mounted on the filter case installed in the washing tank can be easily separated, and the structure of the filter is improved to prevent the laundry from colliding during the laundry administration. The separation of the filter can be prevented.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (2)

A filter case is radially installed on the inner wall of the washing tank, and a filter for collecting foreign substances generated in the laundry during washing administration is detachably mounted to the filter case, and a foreign matter filtering device is configured. Locking structure of the foreign matter trapping device for a washing machine, characterized in that the locking means having a predetermined elasticity is provided to prevent the filter from being separated from the filter case according to the collision. According to claim 1, wherein the locking means is provided with a locking projection which is integrally formed in the front cover constituting the filter and the locking projection protruding to both sides of the pressing portion to lock and release the locking jaw of the filter case Locking structure of the foreign matter trapping device for a washing machine, characterized in that.

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