KR20110051017A - Washing machine - Google Patents

Abstract

PURPOSE: A washing machine is provided to tighten a lower part balancer supporter while combining a hub and a drum base. CONSTITUTION: An upper balancer is installed on the top of a drum body. A drum base(44) is combined to the lower part of the drum body. A hub(11) is fixed to the drum base by a fastening member(112). A hub shaft is connected to the hub. A lower balancer supporter(50) is connected to the drum base and the hub by the fastening member. A lower balancer(48) is installed in the lower part of a balancer supporter.

Description

Washing machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly, to a washing machine which can further reduce the imbalance and vibration of an inner tank due to the eccentricity of a cloth.

Generally, a laundry treatment machine uses water, detergents, and mechanical action to remove dirt from clothes, bedding, etc. (hereinafter, referred to as 'fo'), and dry hot air and mechanical action heated by a heater. It is divided into a dryer for drying the wet cloth using a back, and a dry combined washing machine having a washing function and a drying function.

The washing machine includes a top rod type washing machine in which a fabric access hole through which a fabric enters and exits is formed on the upper surface of the cabinet, and washing is performed by a rotational flow generated when the drum rotates. The washing may be divided into a drum washing machine.

The conventional top rod type washing machine includes a tub that is an outer tub in which washing water is stored, a drum disposed inside the tub, in which laundry is placed, and a washing machine is disposed, and a motor device disposed below the tub to rotate the drum. The upper portion of the drum is equipped with a liquid balancer (hydraulic balancer) to reduce the vibration caused by the amount of eccentricity of the fabric.

However, in the conventional top load type washing machine, since the liquid balancer is mounted only on the upper part, since a rotation moment is generated due to the eccentricity of the fabric of the drum lower part, there is a problem that vertical vibration is caused.

The present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide a washing machine that can install a lower balancer in the lower portion of the drum.

Washing machine according to the present invention for solving the above problems is a tub; A drum body located inside the tub and formed with a hand; An upper balancer installed at an upper portion of the drum body; A drum base coupled to a lower portion of the drum body; A hub fastened to the drum base by a fastening member; A hub shaft connected to the hub; A lower balancer supporter engaged with the drum base and the hub by the fastening member when the hub and the drum base are fastened; It includes a lower balancer is installed in the lower balancer supporter.

The lower balancer supporter includes: a bottom plate portion formed between the hub and the drum base and having a through hole through which the fastening member penetrates;

It includes a hollow cylindrical portion bent in the bottom plate portion surrounding the lower balancer.

The hollow cylindrical portion is fastened to the lower balancer.

The drum base has a lower balancer accommodating part formed therein to accommodate the lower balancer.

The hub and the lower balancer supporter are formed of different materials, and a friction member is disposed between the hub and the lower balancer supporter.

The friction member is a film member formed on the lower surface of the lower balancer supporter in friction with the upper surface of the hub.

A protrusion is formed at one side of the hub and the lower balancer supporter, and a protrusion insertion hole is formed at the other side when the hub and the lower balancer supporter are assembled.

The lower balancer supporter has a through hole through which washing water passes.

The lower balancer supporter has strength reinforcing beads formed in a ring shape.

Washing machine according to the present invention is configured as described above by fastening together the lower balancer supporter when the hub and the drum base, there is an advantage that the assembly process is simple and the number of parts is minimized.

In addition, the upper balancer and the lower balancer can effectively reduce the vibration by maximizing the balancing effect, and can minimize the generation of rotation moment by the balancer, and the upper than when the upper balancer is mounted only on the top of the drum Since the balancer volume can be reduced, the internal space utilization of the washing machine can be further improved.

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

1 is a perspective view of one embodiment of a washing machine according to the present invention, Figure 2 is a cross-sectional view of one embodiment of a washing machine according to the present invention, Figure 3 is an enlarged cross-sectional view of the drive mechanism shown in FIG.

In the washing machine according to the present embodiment, as shown in FIGS. 1 to 3, a cabinet 4 having a cloth entrance 2 formed thereon, a lid 6 opening and closing the cloth entrance 2, and a cabinet 4. ) The tub 8 installed inside the drum, the drum 10 disposed to be rotated inside the tub 8, the hub 11 connected to the drum 10, and the drum 10 to be rotated inside the lower part of the drum 10. A pulsator 12 and a drive mechanism 14 connected to the hub 11 and the pulsator 12 to rotate the drum 10 and the pulsator 12.

The cabinet 4 forms an exterior of a washing machine, and includes a base 16, a cabinet body 18 disposed above the base 16, and a fabric entrance and exit 2 formed on the cabinet body 18. Top cover 20.

The cabinet 4 is provided with a control panel 22 for operating the washing machine and displaying information on the washing machine.

The control panel 22 includes a control body 24 having a display unit and an input unit, a control case 26 installed to be located inside the control body 24, and a control body 28 installed in the control case 26. It includes.

The control PC 28 is provided with a display such as an LED assembly or LCD for displaying information through the display unit, and a switch such as a tet switch or a rotary switch to which a command is input when the input unit is input.

Inside the control body 24, a plurality of water supply valves 30 are provided to be controlled by the control body 28 to supply water such as hot water and cold water.

The lid 6 is a kind of door that opens the cloth entrance 2 when the cloth enters and closes the cloth entrance 2 when washing, rinsing, and dehydrating. The lid 6 is connected to the top of the rear part and to be closed downward.

The lid 6 includes a lead frame 32 rotatably connected to the cabinet 4 and a transparent member 34 installed on the lead frame 32 and made of tempered glass or synthetic resin.

The tub 8 is an outer tub or a reservoir to collect the water leaked from the drum 10 when the washing or rinsing water is contained in washing or rinsing, and the upper surface of the tub 8 is opened for entry and exit of the fabric.

The tub 8 includes a tub body 35 and a tub cover 36 provided above the tub body 35.

The tub 8 is connected to the cabinet 4 by a suspension mechanism 37.

The tub 8 is connected with a drainage mechanism 38 through which washing water, rinsing water, or water dewatered from the cloth is drained, and the drainage mechanism 38 is connected to a drain valve controlled by the control PCB 28 and a drain valve. It includes a connected drain hose.

The drum 10 is an inner tank or a washing tank in which a cloth is contained, and the top surface of the drum 10 is opened and positioned to rotate inside the tub 8.

The drum 10 is provided with a plurality of holes 40 through which washing water and rinsing water enter and exit the drum 10, and the water dehydrated from the cloth is discharged to the outside of the drum 10.

The drum 10 is formed in a hollow cylindrical shape and the drum body 42 forming the outer appearance of the drum 10, the drum coupled to the lower portion of the drum body 42 and forming the lower appearance of the drum 10 And base 44.

The drum base 44 penetrates through the pulsator shaft 56 described later, and a central hole 45 through which washing water, rinsing water, and water dewatered from the cloth passes.

The drum 10 is composed of a dual structure of the drum body 42 and the drum base 44 for strength and ease of production according to the enlargement, and the drum body 42 and the drum base 44 are made of high strength metal such as stainless steel. It is made of a combination of the stainless steel drum body 42 and the stainless steel drum base 44.

The drum 10 is provided with balancers 46 and 48.

The balancers 46 and 48 are balanced at the time of rotation of the drum 10 and prevent the drum 10 from being unbalanced or generating vibration, and the upper balancer 46 installed on the upper portion of the drum 10. And a lower balancer 48 installed below the drum 8.

 One of the upper balancer 46 and the lower balancer 48 is a liquid balancer (Hydraulic balancer) in which the liquid is embedded, and the other one is a ball balancer (ball balancer) in which the ball is embedded. The liquid balancer may have a liquid load therein to generate a distribution load, while the ball balancer may generate a concentrated load due to the bias of an embedded ball.

Therefore, in order to minimize the rotational moment generated by the concentrated load of the ball balancer, the ball balancer is preferably disposed at a position closer to the center of gravity of the drum 10 than the liquid balancer.

Since the center of gravity of the drum 10 is below the drum 10, a ball balancer is used for the lower balancer 48, and a liquid balancer is used for the upper balancer 46.

Since the upper balancer 46 is disposed on the upper portion of the drum 10, the thinner the thickness in the vertical direction is advantageous to the utilization of the space inside the washing machine, and the lower balancer 48 is provided, so that the upper balancer 46 alone When installed, the thickness can be made thinner than the vertical direction.

The upper balancer 46 is formed in a ring shape, and a liquid such as brine is stored therein.

The upper balancer 46 may be provided outside the upper part of the drum 8, or may be provided inside the upper part of the drum 8.

When the upper balancer 46 is installed to protrude on the upper outer surface of the drum 8, the tub 6 or the upper balancer 46 may be damaged due to the collision of the tub 6 and the upper balancer 46. In addition, the upper balancer 46 may function as a stopper for preventing the detachment of the fabric when the upper balancer 46 is protruded on the upper inner surface of the drum 8, and the upper balancer 46 greatly reduces the actual volume of the drum 8. The upper balancer 46 is preferably installed to be positioned inside the upper part of the drum 8.

The drum body 42 is formed in which the beading portion 43 on which the upper balancer 46 is seated protrudes toward the drum body 42, and the upper balancer 46 is seated on the beading portion 43, and the like. It is coupled to the upper portion of the drum body 42 by a fastening member.

The lower balancer 48 is formed in a ring shape, and at least one ball is embedded therein, and may be filled with silicone oil or the like to smooth the movement of the ball.

The lower balancer 48 may be provided at the lower outer side of the drum 8, or may be provided at the lower inner side of the drum 8.

When the lower balancer 48 is installed on the lower inner surface of the drum 8, the lower balancer 48 contacts the carriage lower balancer 48 and is damaged by the lower balancer 48, or the pulsator 12 contacts the lower balancer 48 to pulse. The eater 12 or the lower balancer 48 may be damaged and, when installed on the lower surface of the drum, the pore pulsator 12 does not come into contact with the lower balancer 48 so that there is no damage by the lower balancer 48. It is preferable to be installed in the lower outer surface of the drum (8).

The lower balancer 48 is installed in the lower balancer supporter 50 to which at least one of the drum base 44 and the hub 11 is fastened.

 The drum base 44 has a lower balancer accommodating portion 44 'formed therein by receiving the lower balancer 48 therein.

The lower balancer accommodating portion 44 ′ is recessed in a ring shape along the circumference of the bottom surface of the drum base 44 in a direction projecting toward the drum 10.

The lower balancer 48 and the lower balancer supporter 50 will be described later in detail.

The hub 11 is connected to the hub shaft 58, which will be described later, of the drive mechanism 14 at the center, and a portion other than the center is fastened to the drum base 44 by a plurality of fastening members, and transmitted through the hub shaft 58. The rotating force is transmitted to the drum base 44 through a plurality of portions other than the center.

The hub 11 can stably rotate the drum 10 even if the size of the drum 10 is large due to the above structure.

When the drum shaft (not shown) for rotating the drum 10 is directly connected to the center of the bottom plate portion of the drum base 44, and the drum 10 is enlarged, the diameter of the drum base 44 is large, Since the distance between the outer end of the drum base 44 is far, the distortion or unbalance of the drum 10 may be large and the drum 10 may not be stably rotated.

On the other hand, when the hub 11 is connected to a plurality of parts other than the center of the drum base 44, even if the size of the drum 10 is large, the drum 10 is less twisted or unbalanced and can be stably rotated.

The pulsator 12 is rotated inside the drum 10 to flow washing water, rinsing water and cloth, and is connected to a pulsator shaft 56 to be described later.

As shown in FIG. 3, the driving mechanism 14 rotates the pulsator 12 or rotates the pulsator 12 and the drum 10 together. The driving mechanism 14 includes a motor 54 and a pulsator as a driving source. The driving force of the motor 54 is transmitted to the pulsator shaft 56 and the pulsator shaft 56 which is the washing shaft connected to the 12, the hub shaft 58 which is the dehydrating shaft connected to the hub 11, or the motor ( 54 includes a clutch 60 for transmitting the driving force of the pulsator shaft 56 and the hub shaft 58 together.

The hub shaft 58 is formed of a hollow shaft so that the pulsator shaft 56 is rotated therein.

The clutch 60 is fixed to the lower part of the tub 8 so that the motor 54 is fastened to the lower end of the bearing housing 62, and the hub shaft 58 is rotatably installed in the bearing housing 62. A planetary gear set 66 connected to the carrier 64, a planetary gear set 66 located inside the carrier 66 and connected to the pulsator shaft 56 to decelerate power of the motor 54, and a lower portion of the carrier 66. And a clutch mechanism 68 for intermittent transmission of power between the motor 54 and the carrier 662.

The bearing housing 62 is provided with a plurality of bearings 70 so that the carrier 64 and the hub shaft 58 are rotatably supported, and the motor 54 is mounted.

 The motor 54 is mounted to the bearing housing 62 so as to be positioned under the carrier 64, and the rotary shaft 55 for operating the planetary gear set 66 to the planetary gear set 66 in the carrier 64 is connected. do.

The clutch mechanism 68 is connected to the clutch motor 72 mounted on the bottom surface of the tub 8, the clutch lever 74 having one side connected to the clutch motor 72, and the other side of the clutch lever 74. And a clutch coupling 76 splined to be movable below the carrier 64 so that power transmission with the 54 is interrupted.

That is, when the clutch 54 is driven in the pulsator rotation mode when the motor 54 is driven, the clutch lever 74 raises the clutch coupling 76 to move the carrier 64 to the rotor of the motor 54. And the planetary gear set 66 rotates the pulsator shaft 56, and the pulsator shaft 56 rotates the pulsator 12.

When the motor 54 is driven, if the clutch motor 72 is driven in the pulsator and drum co-rotation mode, the clutch lever 74 lowers the clutch coupling 76 to move the carrier 64 to the motor 54. Connect it.

At this time, the pulsator 12 is rotated by the pulsator shaft 56 rotated by the planetary gear set 66, the carrier 64 is rotated with the clutch coupling 76 to rotate the hub shaft 58 The hub shaft 58 transmits rotational force to the hub 11, and the drum 10 rotates together with the hub 11.

4 is an exploded perspective view illustrating an assembly process of the drum base, the hub, the lower balancer supporter, and the lower balancer illustrated in FIG. 2, and FIG. 5 is an assembly of the drum base, the hub, the lower balancer supporter, and the lower balancer illustrated in FIG. 4. It is an enlarged sectional view when it is done.

The hub 11 has a hub shaft 58 connected to the center thereof, and the edge portion other than the center thereof is particularly fastened to the drum base 44 by the plurality of fastening members 112. That is, the fastening member 112 is transmitted to the drum base 44 through the fastened portion.

The hub shaft 58 has a serration 59 formed at an upper circumference thereof, and a bushing having a serration 114 directly formed with a serration 114 corresponding to the serration 59 at the central hub portion 110. This is installed.

Hub shaft 58 has a male screw 120 is formed on the outer periphery of the top, the male screw 120 penetrates the serration 114, the nut 124 is formed with the female screw 122 is coupled to the male screw 120, The hub 11 is coupled to the hub shaft 58 by the nut 124 is fastened to the male screw 120 after the male screw 120 passes through the serration 114.

The hub 11 is formed with an opening 116 through which washing water, rinsing water, and water dewatered from the cloth enter and exit the hub shaft 58.

Here, at least a portion of the opening 116 is formed to communicate with the central hole 45 of the drum base 44 in the vertical direction so that the washing water, the rinsing water, and the water dewatered from the cloth 10 are discharged from the drum 10. And flows out between the tub 8 or wash water between the drum 10 and the tub 8, rinsing water helps to flow into the drum 10.

That is, the washing water, the rinsing water, and the water dewatered from the cloth 10 may be formed in the central hole 45 of the drum base 44 and the lower balancer supporter 50. (11) through the opening (116) between the drum (10) and the tub (8), or the wash water, rinsing water between the drum (10) and the tub (8), the opening 116 and the lower portion of the hub (11) It is introduced into the drum 10 through the opening 154 and the through hole 156 of the balancer supporter 50 and the central hole 45 of the drum base 44.

The opening 116 is preferably formed to be as large as possible for rapid water flow, and is formed to be sized to maximize the contact area between the hub 11 and the drum base 44.

The hub 11 has a through hole 118 through which the fastening member 112 passes.

The drum base 44 has a through hole 47 through which the fastening member 111 passes, and is formed at a position corresponding to the top and bottom of the through hole 118 of the hub 11.

The lower balancer 48 is formed in a ring shape, a ring-shaped space is formed therein, and a lower balancer body 120 having an upper surface open, a lower balancer cover 122 covering an upper surface of the lower balancer body 120, and a lower balancer. It includes a ball 124 that flows inside the body 120.

The lower balancer 48 is inserted into the lower balancer supporter 50 and fastened to the lower balancer supporter 50 by the fastening member 126.

The lower balancer 48 has a fastening portion 128 having a fastening hole for fastening the fastening member 126 to the outer circumference thereof. The fastening part 128 has a fastening hole formed in a horizontal direction.

The lower balancer supporter 50 is fastened to the drum base 44 together with the hub 11.

The lower balancer supporter 50 is partially interposed between the hub 11 and the drum base 44 when the hub 11 and the drum base 44 are fastened.

That is, the hub 11, the drum base 44, and the lower balancer supporter 50 are stacked in the order of the drum base 44, the lower balancer supporter 50, and the hub 11 in the up and down direction, and the hub 11. When the drum base 44 is fastened to the fastening member 112, the fastening member 112 passes through the hub 11, the lower balancer supporter 50, and the drum base 44 in order, and thus the hub 11 and the lower part. The balancer supporter 50 and the drum base 44 are integrally fixed.

The lower balancer supporter 50 has a through hole 132 through which the fastening member 112 passes.

 The lower balancer supporter 50 is formed in a shape surrounding the bottom and outer circumferential surfaces of the lower balancer 44 to support the lower balancer 44 as well as to prevent the lower balancer 44 from being separated or pushed in the radial direction. .

The lower balancer supporter 50 includes a bottom plate part 150 partially positioned between the hub 11 and the drum base 44, and a hollow cylindrical part bent at the bottom plate part 152 to surround the lower balancer 48. 152.

The bottom plate 150 protects the lower side of the lower balancer supporter 48, and an opening 154 through which the washing water, the rinsing water, and the water dewatered from the cloth enters and enters the hub shaft 56 is formed. .

The lower balancer supporter 50 has a through hole 156 formed therein.

The through-hole 156 drains the washing water, the rinsing water, and the water dewatered from the cloth to the lower side of the lower balancer supporter 50 through the through-hole 156, and the washing water, the rinsing water, and the lower side of the lower balancer supporter 50. The water dehydrated in to flow into the upper side of the lower balancer supporter 50 through the through hole 156, is formed in a plurality of bottom plate 150.

The lower balancer supporter 50 has strength reinforcement beads 158 formed in a ring shape. The strength reinforcement bead 158 is for firmly supporting the outer side of the lower balancer supporter 50, and protrudes from the bottom plate part 150.

The strength reinforcement bead 158 may be formed to protrude downward, or may be formed to protrude upward.

The strength reinforcement beads 158 protrude upward, and the drum base 44 is recessed with a bead fitting portion 49 to be joined to the strength reinforcement beads 158 while avoiding the strength reinforcement beads 158.

The bottom plate part 150 is fastened by the hub 11, the drum base 44, and the fastening member 112, and a through hole 160 through which the fastening member 112 penetrates is formed in the vertical direction.

The hollow cylindrical portion 152 prevents the lower balancer 48 from being detached while supporting the lower balancer 48 when a load is applied while the lower balancer 48 is partially curved when the drum 10 rotates.

That is, when the lower balancer 48 is bent while moving in the left direction of FIG. 5, the left side of the hollow cylindrical part 152 supports the left side of the lower balancer 48 such that the lower balancer 48 does not lean in the left direction. When the lower balancer 48 is bent while being pulled in the right direction of FIG. 5, the right side of the hollow cylindrical part 152 supports the right side of the lower balancer 48 such that the lower balancer 48 is not tilted in the right direction.

The hollow cylindrical part 152 is fastened by the lower balancer 48 and the fastening member 126, and the through hole 162 through which the fastening member 126 penetrates is formed in the left and right directions.

 Hereinafter, for convenience of description, the fastening member for fastening the hub 11, the bottom plate 150, and the drum base 44 is referred to as a vertical fastening member 112, and the hollow cylindrical portion 152 and the lower balancer 48. Fastening member for fastening the horizontal fastening member 126 will be described.

A protrusion 119 is formed at one side of the hub 11 and the lower balancer supporter 50, and a protrusion insertion hole 164 is formed at the other side at the time of assembling the hub 11 and the lower balancer supporter 50. do.

A plurality of protrusions 119 protrude in the direction toward the other from one of the hub 11 and the lower balancer supporter 50, and the protrusion insertion holes 164 have the same number of protrusions 119 as the protrusions 119. The openings are formed at intervals and at equal intervals.

The lower balancer supporter 50 has a plurality of through holes 160 spaced apart in the circumferential direction at a position radially outward from the opening 154, and the strength reinforcing beads 158 have a radius greater than the plurality of through holes 160. It is formed continuously in the circumferential direction at a position outside the direction, the through hole 156 is formed spaced apart in the circumferential direction at a position radially outward than the strength reinforcing bead 158, a plurality of the projection insertion hole 164 is a through hole It is spaced apart in the circumferential direction at a position between the 160 and the opening 154.

The lower balancer supporter 50 is formed of a hub 11 and a different material, and a friction member 170 is disposed between the hub and the lower balancer supporter 50.

The hub 11 is formed of a steel material, and the lower balancer supporter 50 is formed of an aluminum material of the same material as the drum base 44.

The friction member 170 is formed of a film member formed on the lower surface of the lower balancer supporter 50 in friction with the upper surface of the hub 11, and is attached to the lower surface of the lower balancer supporter 50.

Hereinafter, the assembling process of the drum base, the hub, the lower balancer supporter, and the lower balancer configured as described above will be described.

First, a worker inserts the lower balancer 48 into the lower balancer supporter 50 and fastens the through-hole 162 and the lower balancer 48 formed in the hollow cylindrical portion 152 of the lower balancer supporter 50. Match the fastening hole of the part 128 in the horizontal direction.

Then, the horizontal fastening member 162 passes through the through hole 162 formed in the hollow cylindrical portion 152 of the lower balancer supporter 50, and then is fastened to the fastening hole of the fastening portion 128 formed in the lower balancer 48. Then, the lower balancer 48 is assembled integrally with the lower balancer supporter 50. At this time, the lower balancer supporter 50 surrounds the lower surface and the circumferential surface of the lower balancer 48.

Subsequently, the friction member 170 contacts the hub 11 while raising the lower balancer supporter 50 to the upper side of the hub 11, and the hub 11 is provided with a protrusion insertion hole 164 formed in the lower balancer supporter 50. By inserting the protrusions 114 protruding into the), the lower balancer supporter 50 is assembled with the hub 11 while determining the assembly position.

In the state where the hub 11 and the lower balancer supporter 50 are temporarily assembled as described above, the drum base 44 is positioned above the lower balancer supporter 50, the lower balancer 48, and the hub 11, and the upper and lower fasteners are mounted. The member 116 fastens the drum base 44, the lower balancer supporter 50, and the hub 11.

The upper and lower fastening members 116 are sequentially fastened through the through holes 118 of the hub 11, the through holes 160 of the lower balancer supporter 50, and the through holes 47 of the drum base 44.

Hereinafter, the operation of the present invention configured as described above is as follows.

First, when the hub shaft 58 is rotated, the rotational force transmitted to the hub shaft 58 is transmitted to the plurality of points of the drum base 44 while being distributed to the hub 11, and the drum body 42 and the upper balancer 46. ), The drum base 44, the lower balancer supporter 50, the lower balancer 48, and the hub 11 are integrally rotated.

The drum 10 may be unbalanced during rotation thereof, the fluid of the upper balancer 46 and the silver of the lower balancer 48 flow in a direction to solve the unbalancing, and the lower balancer supporter 50 may have a lower balancer ( 48) prevent it from bending while being oriented in a certain direction.

Meanwhile, when the drum 10 is rotated as described above, the wash water includes the central hole 45 of the drum base 44, the opening 154 and the through hole 156 of the lower balancer supporter 50, and the hub 11. The cleaning power of the fabric is increased while passing through the opening 116.

 1 is a perspective view of one embodiment of a washing machine according to the present invention;

2 is a cross-sectional view of one embodiment of a washing machine according to the present invention;

3 is an enlarged cross-sectional view of the driving mechanism shown in FIG. 2;

4 is an exploded perspective view illustrating an assembly process of the drum base, the hub, the lower balancer supporter, and the lower balancer illustrated in FIG. 2;

FIG. 5 is an enlarged cross-sectional view when the drum base, the hub, the lower balancer supporter, and the lower balancer illustrated in FIG. 4 are assembled.

Claims (9)

Tub; A drum body located inside the tub and formed with a hand; An upper balancer installed at an upper portion of the drum body; A drum base coupled to a lower portion of the drum body; A hub fastened to the drum base by a fastening member; A hub shaft connected to the hub; A lower balancer supporter engaged with the drum base and the hub by the fastening member when the hub and the drum base are fastened; Washing machine comprising a lower balancer is installed on the lower balancer supporter. The method of claim 1, The lower balancer supporter includes: a bottom plate portion formed between the hub and the drum base and having a through hole through which the fastening member penetrates; Washing machine including a hollow cylindrical portion bent from the bottom plate surrounding the lower balancer.  The method of claim 1, The hollow cylindrical part is fastened with the lower balancer. The method of claim 1, The drum base is formed with a lower balancer receiving portion is formed in the lower balancer is accommodated in the lower washing machine. The method of claim 1, The hub and the lower balancer supporter are formed of different materials, And a friction member disposed between the hub and the lower balancer supporter. The method of claim 5, The friction member is a washing machine is a film member formed on the lower surface of the lower balancer supporter to friction with the upper surface of the hub. The method of claim 1, One side of the hub and the lower balancer supporter is formed with a projection, the other side washing machine is formed with a projection insertion hole is inserted into the projection when assembling the hub and the lower balancer supporter.  The method of claim 1, The lower balancer supporter is a washing machine is formed through the through water wash.  The method of claim 1, The lower balancer supporter has a strength reinforcing bead formed in a ring shape.

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