WO2014209052A1

WO2014209052A1 - Balancer and washing machine equipped with same

Info

Publication number: WO2014209052A1
Application number: PCT/KR2014/005730
Authority: WO
Inventors: 김성종; 김민성; 강정훈; 김승오; 웡이리
Original assignee: 삼성전자주식회사
Priority date: 2013-06-27
Filing date: 2014-06-27
Publication date: 2014-12-31

Abstract

The present invention relates to a washing machine comprising: a cylindrical unit; and at least one balancer disposed on the cylindrical unit, wherein the balancer comprises: a first balancer housing provided with a ring-shaped race having an open top; and a second balancer housing coupled to the first balancer housing so as to cover the open top thereof. The balancer is disposed inside the cylindrical unit, and the area in which the first balancer housing and the second balancer housing, matching the inner circumferential surface of the cylindrical unit, are coupled is covered by the cylindrical unit, thus reinforcing the strength of the balancer thereby.

Description

Balancer and Washing Machine with It

The present invention relates to a washing machine equipped with a balancer installed in the rotating tub and to reduce the vibration of the rotating tub generated during dehydration so that the rotation of the rotating tub can be made stable.

In general, a washing machine is a device containing a water tank and a rotating tank rotatably installed in the tank, the rotating tank containing the laundry inside the tank is rotated to wash the laundry.

Recently, among these washing machines, there is a washing machine in which a balancer is installed at the top of the rotating tank so that the rotation of the rotating tank can be stabilized at an early stage.

Among the balancers installed in the rotating tub, there is a balancer housing in which an annular race is provided, and a balancer including a plurality of balls movably installed in the race.

One aspect of the invention is to provide a washing machine that can reinforce the strength of the balancer housing forming the balancer.

In addition, an aspect of the present invention provides a balancer and a washing machine having the balancer capable of suppressing the movement of the balls at high speed while allowing the ball to move smoothly at low speed.

The washing machine according to an embodiment of the present invention includes a cylindrical portion formed in a cylindrical shape having an open upper side, and at least one balancer installed in the cylindrical portion, wherein the balancer is provided with an annular lace with an open upper portion. A first balancer housing and a second balancer housing coupled to the first balancer housing to cover the upper side of the open race, wherein the balancer is installed in the cylindrical portion such that its outer circumferential surface is supported by the inner circumferential surface of the cylindrical portion; The coupling portion of the first balancer housing and the second balancer housing corresponding to the inner circumferential surface of the cylindrical portion is covered by the cylindrical portion.

In addition, any one of the first balancer housing and the second balancer housing includes a coupling groove concave in an annular shape, and the coupling projection is provided in the annular shape on the other is coupled to the coupling groove, the coupling portion is the Coupling grooves and the combined portion of the coupling protrusions.

In addition, the first balancer housing is provided with the coupling grooves on the inner circumferential side and the outer circumferential side thereof, respectively, and the coupling protrusions are provided on the inner circumferential side and the outer circumferential side of the second balancer housing, respectively.

In addition, the pair of coupling protrusions are fused to the pair of coupling grooves.

In addition, the balancer includes an upper balancer installed on the upper portion of the cylindrical portion.

In addition, the upper balancer includes a catching groove provided in an annular shape on its upper surface, and the rotating tub includes an upper catching portion formed by bending an upper end thereof to be caught by the catching groove.

In addition, the upper portion of the cylindrical portion includes a seating portion protruding radially inward to seat the upper balancer.

In addition, the balancer includes a lower balancer installed in the lower portion of the cylindrical portion.

In addition, the lower balancer includes a locking groove provided in an annular shape on the lower surface thereof, and the rotating tank includes a lower locking portion formed by bending a lower end thereof so as to be caught by the locking groove.

The balancer includes an annular race and a plurality of balls movably installed in the race, and the bottom of the race is formed to be inclined upward while radially outward.

In addition, the width of the race is formed larger than the average depth of the race.

In addition, a balancer according to an aspect of the present invention is installed on a rotating body whose axis is rotated perpendicularly to a horizontal plane and rotates with the rotating body, the balancer housing provided with an annular race therein, and the circumferential direction in the race And a plurality of balls movably installed in a radial direction, and a viscous oil filled in the race to have a lower oil level than a diameter of the plurality of balls, the lower surface of the race proceeding radially outward and upwards. It is formed to be inclined.

In addition, the washing machine according to an aspect of the present invention is a main body, a water tank installed in the main body containing water, a rotating tank formed in a cylindrical shape having an upper side opened and rotatably installed in the water tank, and a balancer installed in the rotary water tank. The balancer includes a toroidal race having a balance ring housing therein, a plurality of balls movably installed in the circumferential direction and the radial direction within the race, and a lower oil level than the diameter of the plurality of balls. It includes a viscous oil to be filled in the race, the lower surface of the race is formed radially outwardly inclined upward.

As described above, since the balancer is installed inside the cylindrical portion, and the coupling portion of the first balancer housing and the second balancer housing corresponding to the inner circumferential surface of the cylindrical portion is supported by the inner circumferential surface of the cylindrical portion, the strength of the balancer can be reinforced by the cylindrical portion. have.

In addition, as described above, when the balancer rotates at a low speed, the upper portions of the balls protrude above the oil level of the viscous oil, so the relatively viscous force acting on the balls can move smoothly, and when the balancer rotates at a high speed, The movement of the balls is suppressed because the viscous force acting on the balls is completely locked in the viscous oil.

1 is a schematic diagram of a washing machine according to a first embodiment of the present invention.

2 is an exploded perspective view of a balancer applied to a washing machine according to the first embodiment of the present invention.

3 is a cross-sectional perspective view of the upper balancer.

4 is a cross-sectional perspective view of the lower balancer.

5 to 7 are enlarged views of portion A of FIG. 1 sequentially illustrating an installation process of the upper balancer.

8 to 10 is an enlarged view of the portion B showing the installation process of the lower balancer in sequence.

11 is a partial cross-sectional perspective view of a balancer applied to according to a second embodiment of the present invention.

12 is a partial cross-sectional perspective view of a balancer applied to a washing machine according to a third embodiment of the present invention.

13 is a cross-sectional perspective view of a balancer applied to a washing machine according to a fourth embodiment of the present invention.

14 is a cross-sectional view illustrating a case in which a balancer applied to a washing machine according to a fourth embodiment of the present invention rotates at a low speed.

15 is a cross-sectional view illustrating a case in which a balancer applied to a washing machine according to a fourth embodiment of the present invention rotates at a high speed.

Hereinafter, a washing machine according to a first embodiment of the present invention will be described with reference to the drawings.

Washing machine according to an embodiment of the present invention is a fully automatic washing machine in which the laundry is put into the upper side, as shown in Figure 1, the housing 10 and the housing 10 to form the appearance, which is disposed inside the housing 10 The water tank 20, the rotating tank 30 is formed in a cylindrical shape of the upper side is rotatably installed in the water tank 20, and the pulsator is installed in the rotating tank 30 to generate water flow ( 40 and a drive device 50 for rotating the pulsator 40.

The housing 10 is provided on an upper surface thereof and includes an inlet 10a for allowing a user to inject laundry into the rotating tub 30. The housing 10 is rotatable to the housing 10 at a rear end thereof. It is installed to rotate and the door 11 for opening and closing the inlet (10a) is installed.

The water supply device 12 for supplying water to the water tank 20 and disposed in the upper portion of the water tank 20 in the housing 10, and disposed in the lower portion of the water tank 20 so that the water used for washing is discharged to the outside. Drainage device 13 is included.

Inside the housing 10, a water supply device 12 for supplying water to the water tank 20 is disposed above the water tank 20, and a water drain for discharging water used for washing to the outside is provided below the water tank 20. The device 13 is arranged.

The water supply device 12 includes a water supply pipe 12a connected to an external water supply source (not shown), and a water supply valve 12b disposed at the water supply pipe 12a to open and close the water supply pipe 12a, and the drainage device 13 includes: A drain pipe 13a connected to the lower portion of the water tank 20 to guide the water of the water tank 20 to be discharged to the outside, and a drain valve 13b disposed on the water drain pipe 13a to open and close the water drain pipe 13a.

The water tank 20 is suspended in the housing 10 to contain water to be used for washing.

The rotating tub 30 is formed in a cylindrical shape having an approximately upper side open, and its axis is arranged to be perpendicular to the horizontal plane to rotate about the vertical axis and to allow dehydration. The rotating tub 30 has a cylindrical portion 31 formed in a cylindrical shape having an upper side and a lower side opened, and a lower side of the open cylindrical portion 31 coupled to the lower portion of the cylindrical portion 31 to close the pulsator. 40 includes a bowl portion 32 rotatably installed.

The cylindrical portion 31 is formed by rolling a plate-shaped member to have a cylindrical shape, and the cylindrical portion 31 allows the water of the water tank 20 to flow into the rotary tank 30 and at the same time the rotary tank 30. Communication holes 31a are provided to allow water in the tank to be discharged to the water tank 20. In addition,

balancers

60 and 70 are provided on the upper and lower portions of the cylindrical part 31 to offset the unbalanced load of the rotating tub 30 so that the rotation of the rotating tub 30 can be stabilized early.

The drive device 50 includes a stator 51 having a coil 51a, a rotor 52 that interacts with and rotates with the stator 51, including a magnet 52a that interacts with the coil 51a, The lower end is connected to the center of the rotor 52 and the upper end is connected to the pulsator 40 includes a drive shaft 53 for transmitting a rotational force to the pulsator 40.

The

balancers

60 and 70 include an upper balancer 60 installed on the upper portion of the cylindrical portion 31 and a lower balancer 70 installed on the lower portion of the cylindrical portion 31.

As shown in FIG. 2, the upper balancer 60 and the lower balancer 70 are movable in the

balancer housings

61 and 71 in which the

annular races

60a and 70a are provided therein, and in the

races

60a and 70a. Each of the plurality of

balls

62 and 72 is installed. Accordingly, the plurality of

balls

62 and 72 can move in the circumferential direction along the

races

60a and 70a.

The

balancer housings

61 and 71 of the upper balancer 60 and the lower balancer 70 are coupled to each other up and down to form a

first balancer housing

61L and 71L and a second balancer to form a

race

60a and 70a therebetween.

Housings

61U and 71U, respectively.

In this embodiment, the

first balancer housing

61L, 71L is provided with an

annular race

60a, 70a having an open upper side, and the

second balancer housing

61U, 71U has a

first balancer housing

61L, 71L. The upper side of the race (60a, 70a) is coupled to the upper portion of the closed. Accordingly, the

first balancer housings

61L and 71L are formed to have a U-shaped cross section to form the lower surface, the outer circumferential surface and the inner circumferential surface of the

balancers

60 and 70, and the

second balancer housings

61U and 71U are the balancer 60. , 70) is formed.

In the present embodiment, the

first balancer housings

61L and 71L and the

second balancer housings

61U and 71U are each formed of a resin and are coupled to each other by a method such as fusion or the like.

As shown in FIGS. 3 and 4,

coupling grooves

61a and 71a for fusion bonding the second balancer housing are provided in the concave annular shape on the outer and inner circumferential sides of the

first balancer housing

61L and 71L, respectively. Coupling

protrusions

61b and 71b are formed on the outer circumferential side and the inner circumferential side of the

second balancer housings

61U and 71U to protrude in an annular shape to correspond to the

coupling grooves

61a and 71a to be inserted and fused into the

coupling grooves

61a and 71a. Are each provided. Therefore, the

first balancer housings

61L and 71L and the

second balancer housings

61U and 71U are coupled to each other by fusion bonding the

coupling protrusions

61b and 71b to the

coupling grooves

61a and 71a.

The upper balancer 60 and the lower balancer 70 are respectively installed inside the cylindrical portion 31, and the outer circumferential surface thereof is supported by the inner circumferential surface of the cylindrical portion 31, which corresponds to the inner circumferential surface of the cylindrical portion 31. The cylindrical portion 31 connects the coupling portions of the

first balancer housings

61L and 71L and the

second balancer housings

61U and 71U to the

coupling grooves

61a and 71a and the

coupling protrusions

61b and 71b. It is to be supported, so that the strength of the coupling site can be reinforced by the cylindrical portion (31).

The upper portion of the cylindrical portion 31 is provided with a seating portion 31b protruding radially inward of the cylindrical portion 31 to which the upper balancer 60 is seated.

In addition, in order to maintain the

balancers

60 and 70 more stably installed in the cylindrical portion 31, the upper surface of the upper balancer 60 (that is, the second balancer housing 61U of the upper balancer 60). The annular

engaging grooves

61c and 71c are recessed in the upper surface) and the lower surface of the lower balancer 70 (that is, the lower surface of the first balancer housing 71L of the lower balancer 70).

The cylindrical portion 31 includes locking

portions

31c and 31d formed at upper and lower ends thereof so as to correspond to the upper balancer 60 and the lower balancer 70, respectively. The engaging

portions

31c and 31d are formed by bending a portion of the upper end and a portion of the lower end of the cylindrical portion 31, and are bent to be inserted into the engaging

grooves

61c and 71c to be caught by the engaging

grooves

61c and 71c. . That is, the locking portion 31c formed at the upper end of the cylindrical portion 31 is caught by the locking groove 61c provided in the upper balancer 60 to restrict the movement of the upper balancer 60 to the upper side, and the cylindrical portion 31 The engaging portion 31d formed at the lower end of the) is caught by the engaging groove 71c provided in the lower balancer 70 to restrict movement to the lower side of the lower balancer 70.

Hereinafter, the installation process in which the

balancers

60 and 70 are installed in the cylindrical portion 31 will be described in detail with reference to the drawings.

As shown in FIG. 5, the upper balancer 60 is inserted into the cylindrical portion 31 from the upper side of the cylindrical portion 31, and the upper balancer 60 is attached to the seating portion 31b as shown in FIG. 6. Allow them to rest.

In the state where the upper balancer 60 is seated on the seating portion 31b, the upper balancer 60 is fixed to the cylindrical portion 31 through a fastening member S such as a screw.

Subsequently, when the upper end of the cylindrical portion 31 is bent to form the engaging portion 31c inserted into the engaging groove 61c as shown in FIG. 7, the upper balancer 60 has the engaging groove 61c and the engaging portion. Since the movement to the upper side through the 31c is limited, the installation state of the upper balancer 60 installed in the cylindrical portion 31 can be maintained more stably.

As shown in FIG. 8, the lower balancer 70 is inserted into the cylindrical portion 31 from the lower side of the cylindrical portion 31, and as shown in FIG. 9, the bowl portion 32 is disposed below the cylindrical portion 31. The lower balancer 70 is fitted between the cylindrical portion 31 and the bowl portion 32 in the coupled state.

The lower balancer 70 is fixed to the cylindrical portion 31 through a fastening member S such as a screw while the lower balancer 70 is fitted between the cylindrical portion 31 and the bowl portion 32.

Subsequently, the lower end of the cylindrical portion 31 is bent to form a locking portion 31d inserted into the locking groove 71c of the lower balancer 70, as shown in FIG. The movement to the lower side through the 71c and the locking portion 31d is restricted, so that the installation state of the lower balancer 70 installed in the cylindrical portion 31 can be maintained more stably.

In the first embodiment, the

balancers

60 and 70 are installed inside the cylindrical portion 31 as described above, and correspond to the

first balancer housings

61L and 71L and the second balancer corresponding to the inner circumferential surface of the cylindrical portion 31. The coupling portions of the

housings

61U and 71U are supported by the cylindrical portion 31, but are not limited thereto, and separate support formed in an annular shape as shown in FIG. 11 as the second embodiment of the present invention. The balancer 60 is installed inside the member 63 so that the outer circumferential surface of the balancer 60 is supported on the inner circumferential surface of the support member 63, but the first balancer housing 61L corresponds to the inner circumferential surface of the support member 63. ) And the coupling portion of the second balancer housing 61U may be covered by the support member 63 so that the balancer 60 is reinforced by the support member 63. At this time, the upper and lower ends of the support member 63 are provided with engaging

portions

63a and 63b which are caught and supported by the first balancer housing 61L and the second balancer housing 61U, respectively.

In the first embodiment, the

balancers

60 and 70 are installed on the upper and lower portions of the cylindrical portion 31, but are not limited thereto. Although not shown, the upper balancer is disposed on the upper portion of the cylindrical portion 31. Only 60 may be installed, or only the lower balancer may be installed below the cylindrical portion.

In the present embodiment, the upper balancer 60 and the lower balancer 70 are provided with locking

grooves

61c and 71c, but are not limited thereto, and the locking grooves (as shown in FIG. 12 as the third embodiment of the present invention) It is also possible to bend such that the engaging portion 31c is formed parallel to the upper surface of the upper balancer 60 or the lower surface of the lower balancer 70 without the configuration corresponding to 61c. Alternatively, it is also possible to delete both the configuration corresponding to the locking groove and the locking portion, so that the upper balancer 60 and the lower balancer 70 are fixed only by the bolts (S).

Hereinafter, a washing machine according to a fourth embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 13 and 14, the balancer 80 applied to the washing machine according to the third embodiment of the present invention includes a balancer housing 81 having an annular lace 80a and a race 80a. ) And a plurality of balls 82 installed to be movable within the viscous, and viscous oils 83 formed to have a predetermined viscosity and filled with a predetermined height inside the race 80a. In this embodiment, the viscosity of the viscous oil 83 is 350 cSt, the ball 82 is made of a steel ball 3/4 inches in diameter and weighing 28g.

The race 80a is formed in an annular shape as described above, and is formed to have a width and a height greater than the diameter of the balls 82, so that the circumferential movement of the balls 82 is performed according to the rotation of the rotating tub 30. To guide. The race 80a is formed to have a sufficiently large width compared to the diameters of the balls 82, which are also radial in the balls 82 according to the centrifugal force acting on the balls 82 when the rotating tub 30 rotates. It is to be able to move. The width of the race 80a is preferably designed such that the distance from the ball 82 is 3-5 mm.

In addition, the lower surface of the race (80a) in the present embodiment proceeds radially outward and is formed to be inclined upward, the outer peripheral surface of the race (80a) is formed larger than the diameter of the balls (82). This is along the lower surface of the race (80a) consisting of the inclined surface of the ball 82 is only when the rotational speed of the rotating tub 30, the rotational speed is faster than a certain speed and the centrifugal force acting on the balls 82 is greater than a certain It is to be able to move radially outward. That is, since the gravity acting on the ball 82 is greater than the centrifugal force when the rotation speed of the rotating tub 30 is less than or equal to a predetermined level, the ball 82 remains in a radially inward state, that is, the rotating tub 30 When the rotational speed of the c) is greater than or equal to a certain level, since the centrifugal force acting on the ball 82 is greater than gravity, the ball 82 moves radially outward.

In the present embodiment, the amount of the viscous oil 83 filled in the race 80a is such that the balls 82 in the viscous oil 83 are moved in a state in which the viscous oil 83 and the balls 82 are moved radially by the centrifugal force. It is desirable to set the amount so that it can be completely locked.

The width 80a of the lace 80a is relatively larger than its depth. In this embodiment, the lower surface of the lace 80a is inclined so that the width W of the lace 80a is the average depth of the lace 80a. It is formed relatively larger than (D). When the width and depth of the lace 80a are formed in this manner, the width of the viscous oil 83 moved radially by the centrifugal force is at the height of the viscous oil 83 in the state filled in the lower portion of the lace 80a by its own weight. It becomes larger than that. In addition, the upper portion of the balls 82 supported on the lower surface of the race 80a by its own weight protrudes above the oil surface of the viscous oil 83, whereas the ball moved in the radial direction by the centrifugal force is viscous oil 83 ) Is completely locked in. In this embodiment, the inclination of the lower surface of the race 80a is preferably formed to less than 15 degrees.

When the race 80a and the viscous oil 83 are constituted as described above, when the rotary tub 30 rotates at a low speed below a predetermined speed and the centrifugal force acting on the balls 82 is small, the balls 82 race. The state located radially inward in 80a is maintained. In this state, since the upper portion of the balls 82 is exposed to the outside of the viscous oil 83, the viscous force acting on the balls 82 is relatively small, so that the balls 82 may move in the circumferential direction.

In addition, when the rotating tub 30 rotates at a high speed of a predetermined speed or more and the centrifugal force acting on the balls 82 is large, as shown in FIG. 15, the balls 82 and the viscous oil 83 are races 80a. To move radially outward. In this state, the balls 82 are completely locked in the viscous oil 83 so that the viscous force acting on the balls 82 is large, and the circumferential movement of the balls 82 is suppressed.

Thus, in the case of the balancer 80 applied to the rotating tub of the automatic washing machine, the balancer 80 has a relatively wider race 80a than the balancer applied to the drum washing machine so that the movement of the balancer 80 can be made smoothly. When the width of the race (80a) is formed to be large, when the rotating tub 30 rotates at a low speed, the distance between the axis of the rotating tub 30 and the balls 82 is different from each other so that they may be staggered or moved together. As a result, an unbalance may occur due to the balancer 80.

However, when the lower surface of the race 80a is formed as an inclined surface as in this embodiment, the balls 82 are substantially separated from each other on the basis of the axis of the rotating tub 30 according to the rotational speed of the rotating tub 30. Since it moves along the race (80a) while maintaining the state, the occurrence of an unbalance may occur when the balls 82 are staggered from each other. In addition, when the rotating tub 30 rotates at a high speed, the balls 82 move in the radial direction and are immersed in the viscous oil 83, thereby reducing the amount of the viscous oil 83 used.

Although the balancer 80 is described as an example in the rotary tub 30 of the washing machine in the present embodiment, the present invention is not limited thereto, and the axis of the balancer 80 is perpendicular to the horizontal plane as in the rotary tub 30 of the present invention. It is also possible to apply the balancer 80 of the present invention to the rotating body to be rotated so that the rotation of the rotating body can be stabilized early.

In the present embodiment, the balls 82 and the viscous oil 83 are completely locked in the viscous oil 83 in a state in which the balls 82 and the viscous oil 83 are moved radially by the centrifugal force, but are not limited thereto. Only when the balls 82 are supported by the centrifugal force on the outer circumferential surface of the race 80a by the centrifugal force, they are only more soaked in the viscous oil 83 than when they are supported by the weight 80 It is also possible. For example, when the rotating tub 30 rotates at a low speed below a predetermined rotation speed, the balls are immersed in viscous oil about 3/4, but when the rotating tub 30 rotates at a high speed above the predetermined rotating speed of the rotating tub 30, It can be designed to be immersed in viscous oil about 4/5.

In this embodiment,

coupling grooves

61a and 71a are formed in the

first balancer housings

61L and 71L, and

coupling protrusions

61b and 71b are provided in the

second balancer housings

61U and 71U. On the contrary, it is possible to allow the coupling protrusion to be formed in the first balancer housing and the coupling groove to be formed in the second balancer housing.

The present invention is not limited to the embodiments described above, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit of the present invention. Therefore, modifications or variations will have to be belong to the claims of the present invention.

Claims

A cylindrical portion formed in a cylindrical shape with an open upper side,

At least one balancer is installed in the cylindrical portion,

The balancer includes a first balancer housing provided with an annular race having an open upper side, and a second balancer housing coupled to the first balancer housing to cover an upper side of the open race,

The balancer is installed in the cylindrical portion such that its outer circumferential surface is supported by the inner circumferential surface of the cylindrical portion, such that an engagement portion of the first balancer housing and the second balancer housing corresponding to the inner circumferential surface of the cylindrical portion is covered by the cylindrical portion. washer.
The method of claim 1,

A coupling groove recessed in an annular shape in one of the first balancer housing and the second balancer housing, and a coupling protrusion provided in an annular shape in the other and coupled to the coupling groove,

The coupling site is a washing machine coupled to the coupling grooves and the coupling protrusions.
The method of claim 2,

The first balancer housing is provided with the coupling grooves on the inner circumferential side and the outer circumferential side thereof, respectively.

The second balancer housing washing machine is provided with the engaging projection on the inner circumferential side and the outer circumferential side, respectively.
The method of claim 2,

The pair of coupling protrusions are fused to the pair of coupling grooves.
The method of claim 1,

The balancer is a washing machine including an upper balancer is installed on the upper portion of the cylindrical portion.
The method of claim 5,

The upper balancer includes a catching groove provided in an annular shape on an upper surface thereof,

The rotating tub includes an upper locking portion formed by bending an upper end thereof to be caught by the locking groove.
The method of claim 5,

Washing machine comprising a seating portion protruding radially inward in the upper portion of the cylindrical portion is seated on the upper balancer.
The method of claim 1,

The balancer is a washing machine including a lower balancer is installed in the lower portion of the cylindrical portion.
The method of claim 8,

The lower balancer includes a locking groove provided in an annular shape on the lower surface thereof,

The rotating tub is a washing machine including a lower locking portion formed by bending the lower end of the rotating groove to be caught.
The method of claim 1,

The balancer includes an annular race and a plurality of balls movably installed in the race,

The lower surface of the race proceeds radially outward and is formed to be inclined upward.
The method of claim 10,

The width of the lace is formed larger than the average depth of the lace washing machine.
The axis is installed on a rotating body that rotates perpendicular to the horizontal plane, and rotates with the rotating body,

Balancer housing is provided with an annular race inside,

A plurality of balls movably installed in the circumferential direction and the radial direction in the race;

It includes a viscous oil is filled in the race to have a lower oil level than the diameter of the plurality of balls,

The lower surface of the race progresses radially outward and is formed to be inclined upward.
The method of claim 12,

The width of the race is formed relatively larger than the depth of the race.
The method of claim 13,

The width of the race is formed larger than the average depth of the race.
The method of claim 12,

And the amount of the viscous oil filled in the race is set such that the plurality of balls and the plurality of balls are completely submerged in the viscous oil while the viscous oil is moved radially outward by the centrifugal force.
With the body,

A water tank installed in the main body to contain water,

A rotating tub which is formed in a cylindrical shape with an open upper side and is rotatably installed in the tank;

It includes a balancer installed in the rotating tank,

The balance is filled in the race so that the annular race has a balancer housing therein, a plurality of balls movably installed in the circumferential and radial directions in the race, and a lower surface than the diameter of the plurality of balls. The washing machine comprising a viscous oil, the lower surface of the race is formed to be inclined upward and radially outward.
The method of claim 16,

The width of the lace is relatively large compared to the depth of the lace washing machine.
The method of claim 17,

The width of the lace is formed larger than the average depth of the lace washing machine.