KR100450268B1 - Washing Machine - Google Patents

Abstract

Disclosed is a washing machine that improves the coupling structure of an upward flow guide and a dehydration tank to prevent damage to laundry and pinch of foreign matter. The dehydration tank is composed of a bottom plate and a body portion coupled to the outer circumference of the bottom plate, and a plurality of rising water guides are installed in the body portion of the dehydration tank to guide the water flow generated by the pulsator to the upper portion of the dehydration tank. There is a plurality of protrusions are formed spaced apart by a predetermined interval to couple the lower end of the rising flow guide, the tip portion is formed in an arc shape, a plurality of recesses formed between each projection jaw, the front end and the recess of the projection jaw The annular rim portion is formed by connecting the inlet portion of the portion, and the annular rim portion forms a concentric circle having a constant diameter with respect to the center of the bottom plate, and between the annular rim portion and the inlet portion of each recess portion. Washing water inlets for introducing the washing water to each of the upward flow guide is formed. The bottom plate of the dehydration tank is made such that the annular rim is integrally injection molded together with the protruding jaws and the recesses.

Description

Washing Machine

The present invention relates to a washing machine, and more particularly, to an improved washing machine to improve the structure of a dehydration tank equipped with a rising water guide to prevent damage to laundry and pinch of foreign matter.

In general, a washing machine is a device for washing laundry by rotating a cylindrical rotating tub of laundry and washing water, the type of the washing machine is arranged horizontally to rotate the laundry when the rotating tub rotates in the forward and reverse directions with respect to the horizontal axis A drum washing machine, which is a method of washing laundry by being raised upward and falling along the inner circumferential surface of the tank, and a rotating tub having a pulsator therein is disposed vertically, and when the rotating tub rotates in the normal and reverse direction with respect to the vertical axis, There is a vertical axis washing machine which is a method of washing laundry by the water flow generated by the water.

The present invention relates to a vertical washing machine bar, Figure 1 shows the internal structure of the vertical washing machine with a dehydration tank according to the prior art. As shown in the drawing, a conventional vertical washing machine rotates inside a housing 1 forming an exterior, a cylindrical water tank 2 vertically installed inside the housing 1 to accommodate washing water, and a water tank 2. Cylindrical dewatering tank (rotary bath) 3, which is installed to be possible and has a plurality of dewatering holes 3c on the outer circumferential surface thereof, and a pulsator 4 and a water tank installed on the inner lower portion of the dewatering tank 3 to generate a washing water flow. And a drive motor 5 and a power transmission device 6 installed at the lower portion of the outer side to rotate the pulsator 4 and the dehydration tank 3.

The upper part of the housing 1 is open to put or take out laundry into the dehydrating tank 3, and the upper part of the open housing 1 is hinged by a door 7 for opening or closing the dehydrating tank 3. Are combined. In addition, a lower portion of the water tank 2 is provided with a drain hose 8 extending to the outside of the housing 1 in order to discharge the washing water contained in the water tank 2 to the outside.

The conventional dehydration tank (3) has a bottom whose center is open to couple the dehydration tank (3) and the pulsator (4) to the dehydration shaft (6a) and the washing shaft (6b) of the power train (6), respectively. It comprises a plate 3a and a cylindrical body portion 3b screwed to the outer periphery of the bottom plate 3a.

On the inner wall surface of the body portion 3b of the dehydration tank 3, two pairs of upward flow guides 10a which guide the water flow generated by the forward and reverse rotation of the pulsator 4 at the washing stroke to the upper part of the dehydration tank 3; 10b is installed.

The pair of upward flow guides 10a disposed to face each other are formed in a structure in which the front surface is blocked so that the washing water is led to the upper part of the dehydration tank 3 and then dropped toward the laundry to dissolve the detergent contained in the washing water. It can be accelerated and impacted to increase laundry power.

On the other hand, the other pair of upward flow guide 10b disposed to face each other is equipped with a filter 11 in the opening formed in the front to filter foreign matters such as lint and the like contained in the wash water.

Hereinafter, two pairs of the rising water guides will be described with the same reference numeral "10" without being distinguished.

FIG. 2A is a partial perspective view of the dewatering tank 3 according to the prior art shown in FIG. 1, showing a state in which one upflow guide 10 is separated from the dewatering tank 3.

As shown in the drawing, a plurality of protruding jaws 15 protruding inwardly spaced apart from each other so that the rising water flow guides 10 are coupled to the edge of the bottom plate 3a of the dehydration tank 3, A plurality of recesses 20 are formed between the protruding jaws 15. That is, each recess portion 20 is formed between the protruding jaw 15 and the protruding jaw 15 by protruding jaws 15 formed by protruding inwardly from the edge of the bottom plate 3a of the dehydration tank 3. It is formed by being recessed to a predetermined depth to the outside, and the lower end of one rising water guide 10 is disposed on each of the recesses 20.

Each of the protruding jaws 15 is formed at a position adjacent to the recess 20, and includes a first jaw 16 having a coupling hole 18 for engaging the lower end of the upward flow guide 10. And a second jaw 17 formed to extend slightly further inward from the lower part of the first jaw 16 toward the center of the dewatering tank 3.

The upward flow guide 10 is formed to have a cross-section having a substantially C ″ shape so that the top, bottom, and rear portions thereof are opened. On both sides of the inner surface of the upward flow guide 10, locking protrusions 23 extending backward are provided. It is to be hooked to the slots (3d) formed in the body portion (3b) of the dehydration tank (3).

In addition, the upward flow guide 10 includes a coupling part 24 extending from a lower end thereof so as to correspond to the first jaw 16 and the second jaw 17 of the protruding jaw 15.

The coupling portion 24 extends horizontally forwardly from the lower end of the upward flow guide 10 so as to connect between the first jaws 16 of the protruding jaws 15 positioned adjacent to each other. ), From the vertical portion 26 to connect between the vertical portion 26 extending downward from the horizontal portion 25 and the second jaws 17 of the protruding jaws 15 positioned adjacent to each other. It consists of the 2nd horizontal part 27 extended horizontally forward.

Coupling protrusions 28 extending downward are formed on both sides of the lower surface of the first horizontal portion 25 so as to be fitted into coupling holes 18 formed in the first jaws 16 of the protruding jaws 15.

Therefore, in the state where the engaging protrusions 23 of the upward flow guide 10 are fitted in the slots 3d of the body portion 3b of the dehydration tank 3, the coupling protrusions 28 of the upward flow guide 10 are dewatered. When inserted into the coupling holes 18 formed in the protruding jaw 15 of the bottom plate 3a of (3), as shown in FIG. 2B, the upward flow guide 10 is coupled to the dehydration tank 3. will be.

In the combined state as described above, the coupling part 24 formed at the lower end of the upward flow guide 10 is disposed on the recess 20, and the first horizontal part 25 of the coupling part 24 is a protruding jaw ( The first jaw 16 of the 15 is to be horizontal, and the second horizontal portion 27 of the coupling portion 24 is horizontal to the second jaw 17 of the protruding jaw (15).

Therefore, between the lower end of the upward flow guide 10 and the inlet of the recess 20, a washing water inlet 21 for introducing the washing water flow generated by the pulsator 4 into the upward flow guide 10 is formed. The front end portions of the protruding jaws 15 and the lower end portions of the upward flow guide 10 are connected to each other to form one annular shape.

However, the conventional washing machine configured as described above is provided with a plurality of arc-shaped protruding jaws spaced at regular intervals to couple a plurality of upflow guides to the inner wall of the dehydration tank, and the lower end of the upflow flow guide is provided with the protruding jaws. It is disposed on the recess portion formed between the coupling to the protrusion jaw, the lower flow of the rising flow guide is coupled to the dehydration tank, the lower end of the rising flow guide is not to form a concentric circle with the protrusion jaw.

That is, the rising flow guide is made of a material capable of injection molding such as plastic, so that it is difficult to accurately maintain the original shape after fabrication. Accordingly, the tip of the rising flow guide has an arc shape in the state where the lower end of the rising flow guide is coupled to the protruding jaw. It will not be able to achieve a complete concentric circle with the protruding jaw formed, and in particular, the concentricity with the protruding jaw is further deteriorated by gradually deforming according to the use of the washing machine.

Due to this drawback, the pulsator has a sufficient gap (G: see FIG. 1) between the tip of the protruding jaw and the lower end of the rising flow guide to avoid contact with the protruding jaw and the upward flow guide when the pulsator rotates. It should be arranged so as to form a relatively large gap (G1) is that the laundry is caught in the gap during the laundry is damaged occurs.

In addition, the conventional washing machine has a structure in which the rising water guide is coupled between the protruding jaws of the dehydration tank, so that the lower end of the rising water guide is not structurally coupled on the recess, so that a gap is generated therebetween. As a result, the laundry may be caught in the lower end of the rising water guide and may be damaged, and the foreign matter may be attached to the gap to reduce the washing effect of the laundry.

The present invention is to solve the above-mentioned problems of the prior art, an object of the present invention is to provide a washing machine to improve the combined structure of the rising water guide and the dehydration tank to prevent damage to the laundry and pinch of foreign matter.

1 is a longitudinal sectional view showing the internal structure of a vertical shaft washing machine having a dehydration tank according to the prior art.

Figure 2 is a partial perspective view of the dehydration tank according to the prior art shown in Figure 1, Figure 2a shows a state in which the rising water guide is separated from the dehydration tank, Figure 2b shows a state in which the rising water guide is coupled to the dehydration tank. It is.

Figure 3 is a longitudinal sectional view showing the structure of the dehydration tank according to the present invention.

Figure 4 is a partial perspective view of the dehydration tank according to the present invention, Figure 4a shows a state in which the rising water guide is separated from the dehydration tank, Figure 4b shows a state in which the rising water guide is coupled to the dehydration tank.

* Description of symbols on the main parts of the drawings

30: dehydration tank 40: bottom plate

41: protruding jaw 42: recessed portion

43: engaging jaw 44: rim

50: body portion 60: rising water guide

61: washing water inlet 62: washing water outlet

The present invention for achieving the above object is a washing machine provided with a water tank containing the wash water, a dewatering tank rotatably disposed in the inside of the water tank, and a pulsator installed inside the dewatering tank to generate a wash water flow. In

The dehydration tank consists of a bottom plate and a body portion coupled to the outer circumference of the bottom plate, and a plurality of upward flow guides are installed on the inner surface of the body portion of the dehydration tank to guide the water flow generated by the pulsator to the upper portion of the dehydration tank. ,

The bottom plate of the dewatering tank protrudes upwardly from the bottom plate to form a continuous curved rim portion so that the lower end portion of the upward flow guide is disposed at the rear thereof, and the lower portion of the rim portion wash water with the upward flow guide. It characterized in that the washing water inlet for introducing the.

A protruding jaw and a recess are formed at the rear of the rim to engage the lower end of the rising water guide, and the wash water inlet is in communication with the inlet of the recess.

The lower end of the upward flow guide is formed with a coupling portion formed to extend a predetermined length forward, so that the engaging portion is coupled to the protruding jaw outside the annular rim with the lower end of the upward flow guide covering the recess. .

Preferably, the bottom plate of the dehydration tank is formed such that the annular rim portion is integrally injection molded together with the protruding jaws and the recess portions.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment according to the present invention. Here, the same components as the vertical shaft washing machine according to the related art shown in FIG. 1 will be denoted by the same reference numerals and will be described with reference to FIG. 1.

Figure 3 is a longitudinal sectional view showing the structure of the dehydration tank according to the present invention. As shown therein, the dehydration tank 30 according to the present invention penetrates the washing shaft 6b for forward and reverse rotation of the pulsator 4, while the dehydration shaft 6a for rotating the dehydration tank 30 is provided. The bottom plate 40 and the body portion 50 formed integrally with the bottom plate 40 extending upward from the outer periphery of the bottom plate 40 is provided to install the cylindrical approximately open top It is formed into a phase.

The body portion 50 is formed with a plurality of dehydration holes 51 so that the water separated from the laundry during the dehydration administration can exit the dehydration tank 30, the plurality of rising water guides 60 are coupled to the inner wall It is.

The upward flow guide 60 is disposed in the longitudinal direction from one side of the outer circumference of the bottom plate 40 to the upper portion of the body portion 50, the body portion 50 to wash the water flow generated by the pulsator (4) To the top of the

Between the bottom plate 40 and the lower end of the upward flow guide 60, a washing water inlet 61 for sending the washing water with the upward flow guide 60 is formed, and the upward stream is at the top of the upward flow guide 60. The washing water outlet 62 for dropping the washing water passing through the guide 60 toward the bottom of the dewatering tank 30 is formed.

Figure 4 is a partial perspective view of the dehydration tank according to the present invention, Figure 4a shows a state in which the rising water guide is separated from the dehydration tank, Figure 4b shows a state in which the rising water guide is coupled to the dehydration tank.

As shown in Figure 4a, a plurality of protruding jaw 41 protruding upward toward the body portion 50 of the dehydration tank 30 at the edge of the bottom plate 40 of the dehydration tank 30 according to the present invention. Are formed, and recesses 42 recessed in the rear are formed between the protrusions 41 by the protruding protrusions 41.

The tip end of the protruding jaw 41 is formed in an arc shape, and a coupling jaw 43 is formed at the side portion thereof to engage the lower end of the upward flow guide 60.

In addition, a rim 44 formed in an annular shape is integrally formed with the protruding jaw 41 at the front end of the protruding jaws 41 and the inlet of the recesses 42. The inlet of the recess 42 is wash water with the rim 44 disposed above the inlet of the recess 42 with the rising water flow guide 60 covered by the recess 42. Inlet 61 is formed.

The upper end of the rim 44 is provided with a locking projection 45 formed to extend slightly further from the upper end of the projection jaw 41, the lower end of the rim 44 extending toward the center of the bottom plate 40 A step 46 is formed. Similarly to the locking protrusion 45, the leading edge of the step 46 is provided with a locking protrusion 47 which extends slightly upward. The outer periphery of the pulsator 4 is disposed between the engaging protrusions 45 and 47 to prevent foreign substances such as buttons and coins from entering the lower portion of the pulsator 4 (see FIG. 3).

The protruding jaws 41 and the recesses 42, and the annular rim 44 formed by connecting the tip portions of the protruding jaws 41 and the recesses 42 are dehydration tanks ( When the bottom plate 40 of 30) is made of a material capable of injection molding such as plastic, it is made integrally. Accordingly, the rim 44 forms one concentric circle with respect to the center of the bottom plate 40, and the portion 44a positioned above the inlet of the recess 42 is the other portion of the rim 44. Likewise, it has a certain thickness and is made to be relatively high in rigidity so that deformation does not occur even if the washing machine is used for a long time.

As shown in FIG. 3 by the characteristic structure of the rim 44 according to the present invention as described above, the outer periphery of the pulsator 4 rim 44 to form a concentric circle without fear of collision with the rim 44 during rotation ) And the fine gap (G2) can be arranged in close proximity, so that the laundry is caught in the gap between the pulsator 4 and the rim 44 so that there is no risk of damage.

Ascending flow guide 60 according to the present invention is formed in a substantially "C" shape as in the prior art, each of the slots formed in the body portion 50 of the dehydration tank 30 a plurality of engaging projections 63 formed on both sides of the inner surface Coupled to 52.

In addition, a coupling portion 64 is formed at the lower end of the upward flow guide 60 to cover the upper portion of the recess 42. Coupling projections 65 extending downwards are provided at both sides of the front end of the coupling portion 64, and the coupling projections 65 are fitted to each coupling jaw 43 of the protruding jaw 41 corresponding thereto. The hole 48 is formed.

Thus, as shown in Figure 4b, the lower end of the rising water flow guide 60, the coupling portion 64 is each coupling formed on the coupling jaw 43 of the projection jaw 41 adjacent to the coupling projections 65 The upper portion of the recessed portion 42 is covered from the outer side of the annular rim 44 by being fitted into the hole 48, and thus the wash water is provided by the rim 44 and the inlet portion of the recessed portion 42. Inlet 61 is to be formed.

As described above, the lower end portion of the rising water flow guide 60 according to the present invention is made of a simple structure so that the deformation in accordance with the shape in the manufacturing process is not generated by being closely adhered to the coupling jaw 43 of the neighboring projection jaw 41 Not only that, the gap between the protrusion and the jaw 41 will be able to be combined without any occurrence.

Hereinafter, a description will be given of the operation of the vertical shaft washing machine equipped with the dehydration tank 30 and the rising water flow guide 60 according to the present invention configured as described above.

First, when the washing machine is operated after the laundry is put into the dehydration tank 30, the water is supplied to the tank 2, and then the pulsator 4 is reversed by the driving motor 5 and the power transmission device 6. It is rotated, so that the laundry is washed by flowing with the inner wall of the dehydration tank 30 and the washing water while flowing along the washing water flow.

At this time, a part of the washing water generated by the pulsator 4 is connected to the washing water inlet 61 formed by the rim 44 and the recess 42 at the bottom plate 40 of the dewatering tank 30. After rising through each rising water flow guide (60) through, through the wash water outlet 62 provided at the top of the rising water flow guide (60) to fall to the bottom of the dehydration tank 30 will be washed by tapping the laundry. .

In this washing process, the pulsator 4 may be rotated at a minute gap with the rim 44 of the bottom plate 40 of the dehydration tank 30 according to the present invention, so that the laundry is pulsator 4 and the rim ( 44) There is no fear of being pinched between, and the rising water flow guide 60 is in close contact with the protruding jaw 41 of the bottom plate 40 so that laundry or foreign matter is not caught.

After a certain period of time, when the washing process is completed, a rinsing process is performed to drain the wash water through the drain hose (8), and to remove the detergent solution from the laundry. Next, the dehydration tank (30) is rotated by the dehydration shaft (6a). ) Is rotated at high speed so that the laundry is dewatered to complete the washing.

As described above in detail, the washing machine according to the present invention allows the outer circumferential edge of the pulsator to be disposed with a small gap in the annular rim formed by concentric circles on the bottom plate of the dehydration tank so that the laundry is disposed between the pulsator and the rim. This prevents pinching and improves the reliability and preference of the product.

In addition, the gap is not formed between the rising water guide and the dehydration tank is not caught by the laundry or foreign matter, there is an effect that can further improve the preference of the product.

Claims (5)

In the washing machine provided with a water tank for accommodating wash water, a dewatering tank rotatably disposed inside the water tank, and a pulsator installed inside the dewatering tank for generating a water flow. The dehydration tank is composed of a bottom plate and the body portion coupled to the outer periphery of the bottom plate, the inner surface of the body portion of the dehydration tank is provided with an upward flow guide for guiding the water flow generated by the pulsator to the upper portion of the dehydration tank, The bottom plate of the dewatering tank protrudes upwardly from the bottom plate to form a continuous curved rim portion so that the lower end portion of the upward flow guide is disposed at the rear thereof, and the lower portion of the rim portion wash water with the upward flow guide. Washing machine characterized in that the washing water inlet for introducing a. The method of claim 1, The rear portion of the rim portion is formed with a protrusion and a recess for engaging the lower end of the rising flow guide, the washing water inlet is in communication with the inlet portion of the recess. The method of claim 2, The lower end of the upward flow guide is formed with a coupling portion formed to extend a predetermined length forward, so that the coupling portion is coupled to the protruding jaw from the outer side of the annular rim in a state where the lower end of the upward flow guide covers the recess. Washing machine characterized in that. The method of claim 2, The upper end of the rim portion is provided with a locking projection extending further upward from the upper end of the protruding jaw, the lower end of the rim portion is formed with a stepped toward the center of the bottom plate, the end of the stepped projection The washing machine, characterized in that the engaging projection is formed to extend slightly further upwards, the outer periphery of the pulsator is disposed between the engaging projections. The method of claim 2, The bottom plate of the dehydration tank is a washing machine, characterized in that the rim is integrally injection molded with the protruding jaw and the recess.