KR20030055970A - Over flow structure for washing machine - Google Patents

Abstract

PURPOSE: Overflow structure for a washing machine is provided to simplify the structure of the mold by integrally forming an overflow part in the upper periphery of a water tub, and to improve the rigidity of the water tub by forming various reinforcing ribs around the water tub. CONSTITUTION: An overflow system comprises a water tub(20) storing washing water and mounting a rotating washing tub; a water collecting part(30) protruded centrifugally in the upper edge of the water tub to collect washing water overflowing from the water tub; and an overflow part extended into the lower part of the water collecting part and integrally formed in the outer periphery of the water tub to discharge water from the water collecting part through an overflow hole. The opposite surface to the outer periphery of the water tub is not formed in the overflow part, and the rigidity of the tub is increased by forming various reinforcing ribs(23) in the water tub.

Description

Overflow structure for washing machine

The present invention relates to a washing machine, and more particularly, to an overflow structure of the washing machine to allow the water delivered to the upper end of the reservoir by the water generated during washing to flow in a safer direction.

1 is an exploded perspective view of an overflow structure of a conventional washing machine, and FIG. 2 is a bottom perspective view illustrating an overflow structure of a conventional washing machine.

As shown in these figures, the reservoir 1 is installed in the cabinet, and the washing water is filled therein. The washing tank (not shown) in which the washing cloth is put and rotates is installed inside the water storage tank 1.

The reservoir 1 is used to stand in the vertical direction in the cylindrical shape of the top open. A water collecting part 3 is formed at an upper end of the reservoir 1. The water collecting unit 3 is a collecting portion for collecting and draining the wash water overflowed to the upper end of the water storage tank (1). The water collecting part 3 is formed at one side of the upper edge of the water storage tank 1, and a guide surface 4 for guiding the washing water is formed along a top edge of the water storage tank 1.

The overflow part 5 is formed to extend to one side lower portion of the water collecting part 3. The overflow portion 5 communicates with the water collecting portion 3 and delivers the washing water flowing into the water collecting portion 3 to a hose h connected to the lower portion thereof to be discharged. Such a water collecting portion 3 and the guide surface 4 is formed at a position projecting outwardly more than the outer peripheral surface of the reservoir (1).

An overflow hole 6 is formed through the inside of the overflow part 5 so as to communicate with the water collecting part 3. The lower portion of the overflow portion 5 is separated from the outer surface of the reservoir 1 and extends a predetermined length to the lower portion of the reservoir 1.

The water collecting part 7 is formed to extend to the other side lower portion of the water collecting part 3. The water collecting portion 7 is for discharging the amount of wash water that cannot be drained through the overflow portion 5 when it is delivered to the water collecting portion 3. The water collecting hole 8 is formed to penetrate the water collecting unit 7 so as to communicate with the water collecting unit 3. The lower end portion of the water hole 8 is inclined in a direction in which the wash water exiting through the water hole 8 is desired to be discharged. An inlet rib 9 is formed in the water part 7 to surround the water hole 8. The height of the inflow rib 9 is one of the determining factors of the discharge per unit time of the wash water drained through the overflow portion (5).

Tub cover 10 surrounding the upper inner edge of the reservoir (1) is installed. The tub cover 10 is fastened by a fastening screw s to the water storage tank 1 to shield the top edge of the water storage tank 1 and the washing tank.

In the prior art having such a configuration, overflow occurs as follows.

After the laundry cloth is put into the washing tank and the washing water is filled in the water storage tank 1 including the washing tank, washing is performed while the washing tank and the pulsator are rotated together or separately. In particular, as one of the washing processes, there are the following methods. That is, when centrifugal force is applied to the washing water inside the water storage tank 1 while rotating the washing tank at high speed, the washing water rotates along the space between the washing water tank and the water storage tank 1, and flows upward to the inner surface of the water storage tank 1, and the tub The cover 10 is guided to the inside of the washing tank again to be guided by the lower surface.

The wash water leaked through the coupling portion of the tub cover 10 and the reservoir 1 in the process as described above is the house through the guide surface 4 is formed to protrude in the centrifugal direction of the reservoir 1 It is delivered to the water part 3. The wash water delivered to the water collecting part 3 is delivered to the hose h through the overflow part 5 when the amount thereof is not large. When the amount of washing water overflows is not large, the washing water is drained only through the overflow portion 5, but when the amount of the washing water is large, that is, when the amount of the washing water is large enough to exceed the inflow rib 9, FIG. As shown, it is also discharged through the water part (7).

However, the overflow structure of the washing machine according to the prior art as described above has the following problems.

The overflow part 5 and the work part 7 formed on one side of the upper end outer circumferential surface of the water storage tank 1 are separated from the outer circumferential surface of the water storage tank 1 as shown in FIG. It extends a predetermined length to the lower part of the). Therefore, the parts which are not visible from the outside of the reservoir 1, that is, the parts indicated by the arrow B in FIG. 2, are formed to face the outer circumferential surface of the reservoir 1.

Accordingly, the mold part corresponding to the portion indicated by the arrow B in the mold for manufacturing the water tank 1 is a mold for forming an outer surface of the water tank 1 and an outer surface of the overflow part 5 and the work part 7. It should be manufactured separately from the department. In particular, the mold portion for forming the portion indicated by the arrow B should be made of a mold design so as to be supported by the core extended from the lower end of the reservoir (1).

As described above, in the related art, the forming of the mold part for forming the portion indicated by the arrow B is very complicated, and the core for supporting the mold part must extend from the bottom of the reservoir 1, so that the reservoir passes in the portion where the core passes. It becomes impossible to form a reinforcing rib for reinforcing the outer surface of (1), which causes a problem that the strength of the reservoir 1 becomes weak.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, and to provide an overflow structure that facilitates mold design of a water tank.

1 is an exploded perspective view showing an overflow structure of a washing machine according to the prior art.

Figure 2 is a bottom perspective view showing an overflow structure of a washing machine according to the prior art.

3 is an operational state diagram showing that the overflow structure according to the prior art is operated.

4 is a perspective view of a water tank employing a preferred embodiment of the overflow structure of the washing machine according to the present invention.

Figure 5 is a perspective view of the overflow structure of the embodiment of the present invention seen from the bottom of the reservoir.

6 is a cross-sectional view taken along line AA ′ of FIG. 4.

Explanation of symbols on the main parts of the drawings

20: reservoir 21: reservoir

22: damper connection 23: reinforcing rib

30: collecting part 32: guide surface

33: blocking fence 40: overflow part

42: overflow hole 43: inclined surface

According to a feature of the present invention for achieving the object as described above, the present invention has a storage tank having a space filled with the washing water therein and the washing tank is rotatably installed, so as to protrude in the centrifugal direction at the upper edge of the reservoir The water collecting part is formed and collects the washing water overflowed from the reservoir, and the overflow hole extending to the lower portion of the water collecting portion and integrally formed on the outer circumferential surface of the water reservoir to discharge the wash water delivered to the water collecting portion therein. And an overflow portion to be drilled.

The water collecting unit includes a guide surface formed along the upper edge of the upper end of the water reservoir, and a blocking fence that is formed relatively high on the edge of the guide surface so that the wash water delivered to the guide surface does not flow in the centrifugal direction.

The overflow portion is integrally formed with a portion corresponding to the reservoir and integrally formed on an outer surface of the reservoir, and the surface extending from the portion in close contact with the reservoir is configured to form an angle greater than at least right angle with the outer circumferential surface of the reservoir.

According to the overflow structure of the washing machine according to the present invention having such a configuration, the mold structure for forming the water tank is simplified, and various ribs can be freely formed on the outer circumferential surface of the water tank, so that the strength of the water tank is greatly improved.

Hereinafter, a preferred embodiment of an overflow structure of a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

4 is a perspective view showing a water tank employing a preferred embodiment of the overflow structure of the washing machine according to the present invention, Figure 5 is a perspective view of the overflow structure of the embodiment of the present invention seen from the bottom of the water tank, Figure 6 4 is a cross-sectional view taken along the line AA ′ of FIG. 4.

As shown in these figures, the reservoir 20 is fixedly installed in the cabinet of the washing machine, and is formed in a cylindrical shape with an upper end opened. The reservoir 20 is formed inside the reservoir 20 to fill the washing water for washing. The washing tank (not shown) is rotatably installed in the reservoir 20. The wash tub is generally installed concentrically with the reservoir 20.

Damper connecting portions 22 are formed on the outer circumferential surface of the reservoir 20 at regular intervals. A damper (not shown) for fixing and buffering the reservoir 20 is connected to the damper connecting portion 22. On the outer circumferential surface of the reservoir 20, reinforcing ribs 33 for strength reinforcement of the reservoir 20 are formed in various directions at various positions.

At one side of the upper end of the reservoir 20, the collecting portion 30 is formed to protrude to the outer circumferential surface of the reservoir 20. The water collecting unit 30 is a portion collecting the washing water overflowed to the upper end of the reservoir 20. The water collecting part 30 is formed by a guide surface 32 formed to have a predetermined width along an upper surface of the upper edge of the reservoir 20 and a blocking fence 33 formed along one side edge of the guide surface 32. Is formed. The blocking fence 33 is formed along one side edge of the guide surface 32 to be the centrifugal side of the reservoir 20. The blocking fence 33 is formed to protrude upward from the guide surface 32. For reference, the water collecting unit 30 is formed at a portion corresponding to the damper connection unit 22.

The overflow portion 40 is formed to extend below the water collecting portion 30. The overflow portion 40 is integrally formed with the water collecting portion 30 and also integrally formed with the outer circumferential surface of the reservoir 20. In particular, the portion of the overflow portion 40 facing the outer circumferential surface of the reservoir 20 is integrally formed by being connected to the outer circumferential surface of the reservoir 20.

As such, the outer circumferential surface of the overflow portion 40 and the reservoir 20 are connected to each other to simplify the mold design.

The overflow portion 40 should also have an angle θ formed between the outer circumferential surface of the water storage tank 20 and the outer circumferential surface of the water storage tank 20 at least greater than 90 degrees. do.

Meanwhile, the overflow hole 42 communicating with the water collecting part 30 is drilled through the overflow part 40. The overflow hole 42 penetrates through the lower portion of the overflow portion 40 and opens toward the lower portion of the reservoir 20. An inclined surface 32 is formed at an inner lower end of the overflow hole 42. The inclined surface 32 is such that its inclined direction is directed away from the outer circumferential surface of the reservoir 20, that is, in the cabinet direction. Of course, the inclination direction of the inclined surface 32 depends on the position where the electric component is installed in the adjacent position of the reservoir 20 corresponding to the lower portion of the overflow portion 40.

Hereinafter, the operation of the overflow structure of the washing machine according to the present invention having the configuration as described above will be described in detail.

In the present invention, in order to discharge the washing water flowing to the upper end of the reservoir 20 in the washing process to the desired position, the collecting portion 30 and the overflow portion 40 is formed on the upper end of the reservoir 20.

That is, the washing tank is rotated inside the water storage tank 20 and the washing water flows while rotating to the upper portion of the water storage tank 20 through the gap between the washing tank and the water storage tank by the centrifugal force applied to the water. The tub is guided by the tub cover from the upper and the washing is delivered to the inside of the washing tank.

At this time, some of the wash water delivered to the upper portion of the reservoir 20 is leaked between the tub cover and the reservoir 20 is transferred to the water collecting unit 30. That is, washing water is collected by the guide surface 32 and the blocking fence 33 constituting the water collecting unit 30, and the washing water is transferred from the water collecting unit 30 to the overflow unit 40.

In the overflow portion 40, the wash water flows along the overflow hole 42 and is transferred to the outside of the water tank 20. When the wash water is transferred to the outside of the reservoir 20, the discharge direction of the wash water is determined by the inclined surface 43 inside the overflow hole 42. In the present invention, the inclined surface 43 is formed in a direction away from the reservoir 20, that is, in a cabinet direction.

On the other hand, by forming the collecting portion 20 and the overflow portion 42 in this way, the mold design for forming the reservoir 20 is very simple. That is, referring to the outer circumferential surface of the reservoir 20 as a reference, there is no surface facing the outer circumferential surface of the reservoir 20 in the overflow portion 42, and there is no need to design a separate mold part.

In particular, the outer surface of the overflow portion 42 is in contact with the outer circumferential surface of the reservoir 20 is formed such that the angle (θ) formed between the outer circumferential surface of the reservoir 20 to an angle larger than 90 ° All of them can be formed by the mold portion forming the outer surface of the reservoir (20).

Therefore, the number of molds for forming the reservoir 20 as a whole is reduced, and in particular, it is not necessary to use a separate core to form the overflow portion 42. As a result, the shape of the overflow portion 42 does not make it difficult to form any structure, for example, the reinforcement ribs 23, on the outer surface of the reservoir 20. In particular, since the collecting part 30 including the overflow part 42 is formed above the damper connecting part 22, it is easier to form a reinforcing rib near the damper connecting part 22.

In the overflow structure of the washing machine according to the present invention as described above in detail, the overflow structure is integrally formed on the upper outer circumferential surface of the reservoir and is formed so that the surface facing the outer circumferential surface is simplified so that the mold for forming the reservoir is simplified.

In addition, the reinforcing ribs may be formed in various parts of the adjacent reservoirs in proportion to the simplicity of the mold related to the overflow portion, thereby increasing the strength of the reservoir relatively.

Claims (3)

A storage tank having a space filled with washing water therein and having a washing tank rotatably installed therein; A water collecting part formed to protrude in the centrifugal direction at an upper edge of the water storage tank and collecting the washing water overflowed from the water storage tank; Overflow of the washing machine comprising an overflow portion extending to the bottom of the water collecting portion and integrally formed on the outer circumferential surface of the water tank and having an overflow hole for discharging the washing water delivered to the water collecting portion therein. Flow structure. According to claim 1, wherein the water collecting portion includes a guide surface formed along the upper edge of the upper end of the reservoir, and a blocking fence that is formed relatively high on the edge of the guide surface to collect the wash water delivered to the guide surface does not flow in the centrifugal direction Overflow structure of the washing machine, characterized in that configured. According to claim 1 or claim 2, wherein the overflow portion is a portion corresponding to the reservoir is integrally formed on the outer surface of the reservoir, the surface extending from the portion in close contact with the reservoir is larger than at least right angles with the outer peripheral surface of the reservoir An overflow structure of a washing machine, characterized in that it is configured to form an angle.