KR101220217B1 - Clothes Washing Machine Having Balancer - Google Patents

Abstract

The present invention provides a washing machine having a balancer which prevents fusion dregs generated when the balancer is made by fusion from flowing into and out of the balancer. The balancer includes a first housing and a second housing fused together. The first housing has a fusion protrusion protruding toward the second housing, and the second housing has a fusion groove for receiving the fusion protrusion of the first housing to be fused together. The first housing further includes an inner pocket protrusion protruding toward the second housing away from the fusion protrusion inside the fusion protrusion to form an inner pocket portion between the fusion protrusion and the inner pocket protrusion. The second housing further includes an outer pocket protrusion protruding toward the first housing so as to be spaced apart from the fusion protrusion at a predetermined distance from the outside of the fusion groove so that an outer pocket portion is formed between the fusion protrusion and the outer pocket protrusion.

Description

Washing Machine Having Balancer

1 is a cross-sectional view showing a schematic structure of a drum washing machine according to the present invention.

Figure 2 is a perspective view showing that the balancer according to the present invention is separated from the rotating tank.

3 is an exploded perspective view of the balancer according to the present invention.

4 is a combined perspective view of the balancer according to the present invention.

5 is a partially enlarged view of FIG. 3.

FIG. 6 is a cross-sectional view taken along the line A-A of FIG. 4.

Description of the Related Art [0002]

10: rotating tub 15: recess

20: Balancer 21: Ball

30: first housing 31: fusion projections

32: inner pocket projection 40: second housing

41: fusion groove 42: outer pocket projection

51: inner pocket part 52: outer pocket part

The present invention relates to a washing machine having a balancer, and more particularly, to a washing machine having a balancer in which fusion dregs generated when the balancer is made by fusion are not flowed into and out of the balancer.

In general, a washing machine rotates a rotating tub containing laundry with a driving motor to wash the laundry. In the washing process, the rotating tub rotates at a low speed in the forward and reverse directions, and in the dehydration process, the rotating tub rotates at a high speed in the forward direction.

During the dehydration process, the rotating tub rotates at a high speed while the laundry is not evenly distributed in all areas of the rotating tub, but is concentrated in a specific part, or the rotating tub rotates at a high speed while the laundry is pushed to one side by the rapid rotation of the rotating tub early in the dehydration process. If the center of gravity of the rotating tub and the center of rotation do not coincide with each other, it causes vibration and noise, and if this phenomenon is repeated, components including the rotating tub, the rotating shaft, and the driving motor may fail or shorten the lifespan.

In particular, the drum type washing machine has a structure in which the rotating tub in which the laundry is placed is horizontally arranged so that the laundry rotates at high speed in the state where the laundry is collected at the bottom of the rotating tub by gravity during dehydration, so that the center of gravity and the rotation center do not coincide with each other. As a result, the possibility of vibration and noise is very high.

Therefore, a vertical shaft type washing machine including a drum type washing machine installed vertically is generally provided with a balancer for maintaining a dynamic balance of the rotating tank.

An example of a washing machine having such a balancer is Korean Laid-Open Patent Publication No. 1999-0038279. The ball balancer of the conventional washing machine has a racer installed in the upper and lower portions of the rotating tub to maintain a dynamic balance when the rotating tub rotates at a high speed, and a ball and a viscous oil made of steel material disposed freely in the racer. It is provided. The racer is formed by fusion of the annular upper plate and the lower plate.

Therefore, when the rotating tub rotates, the steel balls compensate for this when the rotating tub rotates without maintaining a dynamic balance due to the unbalanced eccentric structure of the rotating tub itself and the uneven distribution of laundry in the rotating tub. The dynamic balance can be maintained.

However, the ball balancer of the conventional washing machine as described above has a structure in which the racer is composed of a top plate and a bottom plate to be fused to each other, so that the fusion dregs generated during the fusion operation flows down into the inside and outside of the racer and flows down into the racer. Leftovers interfere with the movement of the ball inside the racer and cause vibration and noise, while fusion dregs flowing down the outside of the racer deteriorate the appearance of the ball balancer and prevent the ball balancer from coupling to the tumbler. There are drawbacks to this.

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 having a balancer such that the fusion dregs generated when the balancer is made by fusing the balancer does not flow into and out of the balancer. .

The present invention for achieving this object is a washing machine comprising a balancer,

The balancer includes a first housing and a second housing fused and coupled to the first housing, and at least one pocket portion collecting fusion residues generated when the balance is fused to the fusion portions of the first housing and the second housing. Characterized in that provided.

The first housing has a fusion protrusion protruding toward the second housing, and the second housing has a fusion groove for receiving the fusion protrusion of the first housing to be fused together.

The first housing further includes an inner pocket protrusion protruding toward the second housing away from the fusion protrusion at an inner side of the fusion protrusion so that an inner pocket portion is formed between the fusion protrusion and the inner pocket protrusion.

The second housing further includes an outer pocket protrusion protruding toward the first housing so as to be spaced apart from the fusion protrusion from the outside of the fusion groove by a predetermined distance so that an outer pocket portion is formed between the fusion protrusion and the outer pocket protrusion.

The second housing further includes a guide protrusion protruding toward the first housing and in close contact with an outer surface of the inner pocket protrusion.

The balancer further includes a plurality of balls movably disposed in an inner space formed by fusion of the first housing and the second housing to have a balancing action.

The washing machine includes a rotating tub disposed horizontally, the balancer is installed on the front and rear of the rotary tank.

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

1 is a cross-sectional view showing a schematic structure of a washing machine according to the present invention.

As shown in FIG. 1, the washing machine according to the present invention includes a housing 1 forming an external appearance, a water tank 2 installed inside the housing 1 and containing wash water, and an inside of the water tank 2. It is rotatably disposed and has a rotating tub (10) to put the laundry into the laundry and a door (4) hinged to the open front of the housing (1).

In the upper part of the water tank 2, a water supply pipe 5 for supplying washing water and detergent to the water tank 2 and a detergent supply device 6 are disposed, and in the lower part of the water tank 2, when the washing operation of the laundry is completed, the water tank ( A drain pipe 7 for discharging the wash water contained in 2) to the outside of the housing 1 is installed.

The rear side of the rotating tank 10 is disposed so that the rotating shaft 8 extends through the rear side of the water tank 2, and a drive motor 9 to which the rotating shaft 8 is coupled to the outer side of the rear water tank 2 is installed. Accordingly, when the driving motor 9 is operated, the rotating shaft 8 rotates to rotate the rotating tub 10 together.

A plurality of dehydration holes (10a) is formed on the circumferential surface of the rotary tub 10, during the washing stroke water contained in the water tank (2) flows into the interior of the rotary tub (10) and is washed by water in which detergent is dissolved This can be done, and during the dehydration stroke, the water can be drained out of the housing 1 through the drain pipe 7.

As the plurality of lifters 10b are disposed in the longitudinal direction inside the rotary tub 10, the laundry soaked with water is rotated upward from the bottom of the rotary tub 10 as the rotary tub 10 rotates at a low speed during the washing stroke. It is pulled up and dropped back to the bottom of the rotating tub 10 so that the laundry can be washed effectively.

Therefore, in the washing stroke, the rotating shaft 8 rotates in a reverse direction from the forward direction by the driving motor 9 to wash the laundry by rotating the rotating tub 10 at low speed. The laundry is dehydrated by rotating the rotary tub 10 at high speed while rotating in the direction.

When the rotating tub 10 rotates at a high speed in the dehydration process, the rotating tub 10 itself is not made to have a center of gravity and the same center of rotation, or laundry is not evenly distributed in the rotary tub 10 so that the laundry is placed in a specific area. In this case, the rotating tub 10 may not maintain a dynamic balance.

The balancer 20 according to the present invention is installed at the front and rear ends of the rotating tub 10 to prevent the dynamic unbalance so that the rotating tub 10 can be rotated at a high speed in a state where the rotating center and the center of gravity are matched. The configuration and coupling structure of the balancer 20 of the present invention will be described with reference to FIGS. 2 to 6.

Figure 2 is a perspective view showing that the balancer according to the present invention is separated from the rotating tank.

As shown in FIG. 2, the rotating tub 10 has a cylindrical body 11 in which the whole and the rear part are opened and the dehydration hole 10a and the lifter 10b are provided, and in the entire opened part of the body 11. Coupled to the front member 12 provided with an opening 14 for allowing laundry to be introduced into or taken out of the body 11, and coupled to the open rear portion of the body 11 and rotating the tub 10. It comprises a rear member 13 to which a rotating shaft 8 (see FIG. 1) for rotation is coupled.

In the rim of the front member 12 is provided with an annular recess 15 formed in an approximately 'c' shape and open toward the front so that the balancer 20 is accommodated. Similarly, the rim is provided with an annular recess 15 (not shown) that is open toward the rear to accommodate the balancer 20.

The front member 12 and the rear member 13 are fitted to the front and rear edges of the body 11, respectively, so as to be coupled to each other in a screw or other manner.

Balancer 20 according to the present invention is installed in the recess 15 of the front member 12 and the rear member 13, the balancer 20 is formed in an annular shape and a plurality of metals having a balancing function therein The ball 21 of the material and the viscous fluid (not shown) to be able to adjust the moving speed of the plurality of balls 21 is filled.

The annular balancer 20 has a plurality of flanges 22 having a screw hole 22a at an inner circumference thereof, and has an annular shape provided at the front member 12 and the rear member 13 of the rotating tub 10. Screwed to the recess 15 is assembled.

Next, a configuration of the balancer according to the present invention will be described with reference to FIGS. 3 to 6.

3 and 5 are exploded perspective and combined perspective views of the balancer according to the present invention, respectively, FIG. 5 is a partially enlarged view of FIG. 3, and FIG. 6 is a sectional view taken along the line A-A of FIG. 4.

As shown in FIGS. 3 and 4, the balancer 20 is composed of an annular first housing 30 and an annular second housing 40 that is fused and coupled to the first housing 30. One annular housing corresponding to the recess 15 (see FIG. 2) of the rotating tub 10 is formed. The first and second housings 30 and 40 are made by injection molding a synthetic resin such as plastic.

As shown in FIG. 5, the first housing 30 having an approximately c-shaped cross section has a fusion protrusion 31 protruding toward the second housing 40 at both edges of the first housing 30 to be coupled with the second housing 40. And an inner pocket protrusion 32 projecting toward the second housing 40 away from the fusion protrusion 31 at the inner side of the fusion protrusion 31.

The second housing 40 is coupled to both edges of the first housing 30 so that the balancer 20 forms a sealed inner space 23 for the ball 21 and the viscous fluid. The first housing so as to correspond to the fusion groove 41 formed concave along the rim of the second housing 40 and spaced apart from the fusion projection 31 of the first housing 30 at an outer side of the fusion groove 41. The outer pocket protrusion 42 protruding toward the 30 and the guide protruding toward the first housing 30 from the inside of the fusion groove 41 to be in close contact with the inner pocket protrusion 32 of the first housing 30. The protrusion 43 is provided.

The guide protrusion 43 of the second housing 40 moves the first housing 30 in contact with the inner pocket protrusion 32 of the first housing 30 when the second housing 40 is fitted into the first housing 30. The fusion protrusion 31 of the housing 30 is guided to be quickly and accurately fitted into the fusion groove 41 of the second housing 40.

Accordingly, when the fusion protrusion 31 of the first housing 30 is inserted into the fusion groove 41 of the second housing 40 to fusion the first housing 30 and the second housing 40, FIG. 6. As shown in, between the fusion protrusion 31 and the inner pocket protrusion 32, an inner pocket 51 having a predetermined space is formed, and a constant between the fusion protrusion 31 and the outer pocket protrusion 42. An outer pocket portion 52 having a space is formed.

When heat is generated between the fusion protrusion 31 of the first housing 30 and the fusion groove 41 of the second housing 40 in this state, the two parts are fused to each other and firmly coupled. At this time, the fusion dregs generated by heat fusion and flowing down into the first housing 30 are collected in the inner pocket 51 so that the ball 21 moves in the inner space 23 of the balancer 20. The fusion dregs are not introduced into the fusion dregs, and the fusion dregs flowing out of the first housing 30 are collected in the outer pocket part 52 so as not to flow out of the balancer 20.

In the embodiment of the present invention has been described by illustrating that the balancer is installed in the washing machine of the drum type, it is obvious that the rotating tub can also be applied to a vertical washing machine having a vertically arranged structure.

As described in detail above, the washing machine according to the present invention has a structure in which the fusion dregs generated when the balancer is made by fusion are gathered in a plurality of pocket parts so that the fusion dregs do not flow into and out of the balancer. The inner space of the balancer where the ball is filled to move has a smooth surface without fusion dregs, so that the ball moves smoothly and noise and vibration are not generated due to the ball's movement, and the outer surface of the balancer is fused. Cleanly formed without debris has a beautiful appearance and has the effect that the balancer can be accurately coupled to the rotating tank without interference by fusion dregs.

Claims (7)

In the washing machine containing a balancer, The balancer includes a first housing and a second housing fused and coupled to the first housing, and at least one pocket portion collecting fusion residues generated when the balance is fused to the fusion portions of the first housing and the second housing. Washing machine characterized in that provided. The method of claim 1, wherein the first housing is provided with a fusion projection protruding toward the second housing, the second housing is provided with a fusion groove for receiving a fusion projection of the first housing to be fused to each other The washing machine characterized by. The method of claim 2, wherein the first housing further comprises an inner pocket projection protruding toward the second housing away from the fusion projection inside the fusion projection to form an inner pocket portion between the fusion projection and the inner pocket projection. Washing machine characterized in that. According to claim 2, wherein the second housing further comprises an outer pocket projection protruding toward the first housing so as to be spaced apart from the fusion projection from the outside of the fusion groove by a predetermined distance, the outer pocket portion between the fusion projection and the outer pocket projection Washing machine, characterized in that formed. The washing machine according to claim 3, wherein the second housing further includes a guide protrusion protruding toward the first housing to be in close contact with an outer surface of the inner pocket protrusion. The washing machine according to claim 1, wherein the balancer further comprises a plurality of balls movably disposed in an inner space formed by fusion of the first housing and the second housing to perform a balancing action. The washing machine according to claim 1, wherein the washing machine includes a rotating tub disposed horizontally, and the balancer is installed at the front and the rear of the rotating tub.

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