KR101675866B1 - Apparatus for driving washing machine and washing machine having the same - Google Patents

Apparatus for driving washing machine and washing machine having the same Download PDF

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Publication number
KR101675866B1
KR101675866B1 KR1020150053076A KR20150053076A KR101675866B1 KR 101675866 B1 KR101675866 B1 KR 101675866B1 KR 1020150053076 A KR1020150053076 A KR 1020150053076A KR 20150053076 A KR20150053076 A KR 20150053076A KR 101675866 B1 KR101675866 B1 KR 101675866B1
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KR
South Korea
Prior art keywords
rotor
stator
output
shaft
tub
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KR1020150053076A
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Korean (ko)
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KR20160123428A (en
Inventor
김병수
고형환
이병호
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주식회사 아모텍
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Priority to KR1020150053076A priority Critical patent/KR101675866B1/en
Publication of KR20160123428A publication Critical patent/KR20160123428A/en
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Publication of KR101675866B1 publication Critical patent/KR101675866B1/en

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The axial type motor of the present invention comprises a stator, a first rotor disposed on one axial surface of the stator and connected to the outer shaft, a second rotor disposed on the other surface in the axial direction of the stator and connected to the inner shaft, And a planetary gear set disposed in one of the outer shaft and the inner shaft for reducing the rotational speed of the motor. The first rotor and the second rotor are configured to have the same rotation torque, The height of the washing machine can be reduced and the washing machine can be made slim.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a washing machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double rotor and a double stator type motor, and more particularly, to a washing machine driving apparatus using an axial type motor in which a first rotor and a second rotor are disposed with a predetermined gap therebetween, The present invention relates to a washing machine equipped with a washing machine.

As disclosed in Korean Patent Registration No. 10-0548310 (Jan. 24, 2006), the washing machine includes an outer case having an outer shape, an outer tub supported in the outer case to receive washing water therein, A pulsator which is rotatably housed in the inside of the inner tank and is relatively rotatably installed inside the inner tub to form wash water, a driving force for rotating the inner tank and the pulsator is generated A pulsator rotation shaft that receives the driving force of the driving motor to rotate the pulsator, and a pulsator rotation shaft that is connected to the driving motor and is connected to the pulsator rotation shaft A sun gear, a plurality of planetary gears simultaneously engaged with the sun gear and the ring gear, a carrier which rotatably and rotatably supports the planetary gear, And a clutch spring for controlling rotation of the inner tub and the pulsator when dewatering.

Such a conventional washing machine is provided with a planetary gear set composed of a sun gear, a ring gear, a planetary gear, and a carrier so as to transmit the rotational force of the driving motor to the pulsator and the inner tank, To rotate only the pulsator or to rotate the pulsator and inner tub simultaneously.

However, the conventional washing machine requires a planetary gear device, a clutch, etc. in order to selectively rotate the pulsator and the inner tank, so that the construction is complicated and the manufacturing cost increases.

Further, in the conventional washing machine, since the space occupied in the height direction of the washing machine is increased because the planetary gear device and the clutch are installed between the driving motor and the outer tub, and when the height of the washing machine is increased or the height of the washing machine is the same, There is a problem that washing capacity is reduced.

Further, the conventional washing machine has a structure in which the pulsator and the inner tub can rotate only in the same direction, and the pulsator and inner tub can not be rotated in opposite directions to each other.

A conventional axial type motor includes a stator in which a core value insulated by an insulator is annularly arranged and a coil is wound around the core tooth, and a magnet having an annular shape facing the end of the core tooth in the axial direction, as disclosed in Patent Document 10-0989684 And a rotor rotatably supported by the central rotor shaft and relatively rotated with respect to the stator, wherein the stator is formed in a donut shape having a central portion opened, and a plate-like yoke A core tooth formed with a core pole at one end of each end and fixed at a state where the other end is inserted into the core tooth insertion hole and standing on the yoke; A core insulator of an insulating material, and a coil wound around the core teeth surrounded by the core insulator.

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In such a conventional axial type motor, although the stator and the rotor are arranged so as to face each other in the axial direction and the rotor is rotated by interaction with the stator, there is a problem that it is difficult to apply the single rotor type to the washing machine.

Korean Patent Registration No. 10-0548310 (Jan. 24, 2006)

It is an object of the present invention to provide a washing machine using an axial type motor capable of reducing the height of a motor because the first rotor and the second rotor are disposed on the top and bottom surfaces of the stator, And a washing machine having the same.

Another object of the present invention is to provide a washing machine driving apparatus using an axial type motor that can realize the same rotational torque of the first rotor and the second rotor, and a washing machine having the same.

According to an aspect of the present invention, there is provided a washing machine driving apparatus comprising: an axial type of motor having a first rotor and a second rotor that are driven to rotate independently; A first outer shaft to which an output of the first rotor is applied; A first inner shaft to which an output of the second rotor is applied; The output of the first rotor is connected to the ring gear via the first outer shaft and the output of the second rotor is connected to the sun gear through the first inner shaft and the output of the second rotor is decelerated from the carrier when the output of the second rotor is connected to the sun gear And the output of the first rotor is output from the ring gear without deceleration when the output of the first rotor is connected to the ring gear; A second inner shaft for transmitting an output generated from the carrier to a pulsator; And a second outer shaft for transmitting an output generated from the ring gear to the washing tank, wherein the motor includes a stator, a first rotor disposed on one axial surface of the stator and connected to the ring gear through a first outer shaft, And a second rotor disposed on the other surface in the axial direction of the stator and connected to the sun gear through a first inner shaft, wherein the first rotor and the second rotor have the same rotation torque.

The stator includes a stator core arranged in a radial direction, a bobbin made of an insulating material wrapped around the stator core, a first coil wound on the stator core and interacting with the first rotor, And a second coil wound on a lower side of the first rotor and interacting with the second rotor.

The stator core includes a first coil winding portion around which the first coil is wound, a second coil winding portion around which the second coil is wound, and a partition portion for partitioning the first coil winding portion and the second coil winding portion .

The stator core may be a mixture of an amorphous metal powder and a soft magnetic powder, an amorphous metal powder or a soft magnetic powder in a compression molded form, a plurality of iron pieces in a laminated form, or a compression molded form and a laminated iron piece Any combination of the combined forms can be applied.

The stator is fixed to the stator support, and the stator support can be integrally formed with the stator core by insert molding.

The first rotor includes a first magnet disposed radially on the one axial surface of the stator with a predetermined gap therebetween, a first back yoke disposed on an upper surface of the first magnet, a first magnet disposed between the first magnet and the first back yoke, And a first rotor support fixed to the outer shaft and connected to the outer shaft.

The first rotor support may be integrally formed with the first magnet and the first back yoke by insert molding or may be formed of a metal material capable of acting as a back yoke.

The second rotor includes a second magnet positioned radially and located at a certain gap on the other surface in the axial direction of the stator, a second back yoke disposed on the back surface of the second magnet, And a second rotor support fixed to the inner shaft and connected to the inner shaft.

The second rotor support may be integrally formed with the second magnet and the second back yoke by insert molding or may be formed of a metal material capable of acting as a back yoke.

The washing machine of the present invention is characterized in that the washing machine of the present invention comprises an outer tank for receiving washing water, a washing tub which is rotatably disposed in the inner tub and accommodates laundry, a pulsator rotatably disposed in the washing tub to form washing water, And a washing machine driving unit installed at a lower portion of the washing tub to simultaneously or selectively drive the washing tub and the pulsator.

Wherein the outer shaft is formed in a cylindrical shape to allow the inner shaft to pass therethrough and includes a first outer shaft to which the first rotor support of the first rotor is connected and a second outer shaft connected to the washing tub, A first inner shaft connected to the second rotor support of the second rotor, and a second inner shaft connected to the pulsator.

The planetary gear set includes a ring gear that connects the first outer shaft and the second outer shaft, a sun gear that is integrally connected to the first inner shaft, a planetary gear that is meshed with the outer surface of the sun gear and the inner surface of the ring gear, And a carrier rotatably supported by the planetary gear and connected to the second inner shaft.

The washing machine of the present invention includes a tub which receives washing water, a drum rotatably supported in the tub and accommodates laundry, and a washing machine driving device mounted on a rear surface of the tub and connected to the drum to drive the drum The washing machine comprising: a driving shaft having a drum connected to one end thereof and rotatably supported on the tub; An axial-type motor mounted on a rear surface of the tub and having a first rotor and a second rotor which are driven to rotate independently; An outer shaft to which an output of the first rotor is applied; An inner shaft to which an output of the second rotor is applied; And an output of the first rotor is connected to the ring gear via the outer shaft, an output of the second rotor is connected to the sun gear through the inner shaft, and an output decelerated from the carrier when the output of the second rotor is connected to the sun gear And an output generated from the carrier is connected to the drum through the drive shaft. The motor includes a stator, and a ring gear disposed on one axial surface of the stator and connected to the ring gear via an outer shaft And a second rotor disposed on the other surface in the axial direction of the stator and connected to the sun gear through an inner shaft, wherein the first rotor and the second rotor have the same rotation torque.

As described above, in the axial type motor of the present invention, the first rotor and the second rotor are disposed on the upper and lower surfaces of the stator, respectively, so that the height restriction of the coil winding can be eliminated, It is advantageous that it can be made slim.

It is a further object of the present invention to provide a rotor having the same size as the first and second rotors so that the drive torque output from the first rotor and the drive torque output from the second rotor can be equalized.

1 is a sectional view of a washing machine according to a first embodiment of the present invention.
2 is a sectional view of a washing machine driving apparatus according to a first embodiment of the present invention.
3 is a sectional view of the planetary gear device according to the first embodiment of the present invention.
4 is a partially enlarged view of an axial type motor according to the first embodiment of the present invention.
5 is a sectional view of a washing machine according to a second embodiment of the present invention.
6 is a sectional view of a washing machine driving apparatus according to a second embodiment of the present invention.
7 is a cross-sectional view of a washing machine driving apparatus according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification.

FIG. 1 is a sectional view of a washing machine according to a first embodiment of the present invention, and FIG. 2 is a sectional view of a washing machine driving apparatus according to a first embodiment of the present invention.

1 and 2, a washing machine according to a first embodiment of the present invention includes a case 100 forming an outer shape, an outer tub 110 disposed inside the case 100 to receive washing water, A pulsator 130 rotatably disposed in the washing tub 120 to form wash water and a washing tub 120 rotatably disposed inside the washing tub 120 to perform washing and dewatering; And a washing machine driving device 140 installed to simultaneously or selectively drive the washing tub 120 and the pulsator 130.

2, the washing machine driving device 140 includes outer shafts 20 and 22 connected to the washing tub 120 and a washing tub 120 rotatably disposed inside the outer shafts 20 and 22, A first rotor 40 connected to the outer shafts 20 and 22; a second rotor 50 connected to the inner shafts 30 and 32; 1 includes a stator 60 disposed with an air gap between the rotor 40 and the second rotor 50, and a planetary gear device 70. The first rotor 40, the second rotor 50 and the stator 60 constitute an axial type motor 140a.

The inner shafts 30 and 32 are provided with a planetary gear device 70 for reducing the rotational speed of the inner shafts 30 and 32 to increase the torque.

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The outer shafts 20 and 22 are formed in a cylindrical shape to allow the inner shafts 30 and 32 to pass therethrough and have a first outer shaft 20 connected to the interrotor 40 and a second outer shaft 20 connected to the washing tub 120. [ And an outer shaft (22).

The inner shafts 30 and 32 include a first inner shaft 30 connected to the second rotor 50 and a second inner shaft 32 connected to the pulsator 130.

3, the planetary gear set 70 includes a ring gear 72 connecting between the first outer shaft 20 and the second outer shaft 22, and a ring gear 72 connected to the first inner shaft 30 integrally therewith. A sun gear 74 connected to the sun gear 74 and a planetary gear 78 meshing with the outer surface of the sun gear 74 and the inner surface of the ring gear 72, a planetary gear 78 rotatably supported and a second inner shaft 32). ≪ / RTI >

The first outer shaft 20 and the second outer shaft 22 are connected to each other by the ring gear 72 so that the rotational speed of the first outer shaft 20 is directly transmitted to the second outer shaft 22. Therefore, the rotational speeds of the first outer shaft 20 and the second outer shaft 22 are the same.

The first inner shaft 30 is formed integrally with the sun gear 74. The second inner shaft 32 is connected to the carrier 76 by spline engagement or the like and the carrier 76 is connected to the planetary gear 78. [ So that the rotational speed of the first inner shaft 30 is reduced and transmitted to the second inner shaft 32.

Since the inner shafts 30 and 32 are connected by the planetary gear set 70 and the rotation speed of the second rotor 50 is reduced and transmitted to the pulsator 130, the torque of the pulsator 130 is increased So that it can be applied to a large capacity washing machine.

A first connecting portion 90 is formed on the outer surface of the first outer shaft 20 to connect the first rotor support 46 of the first rotor 40. A second connecting portion 90 is formed on the lower end of the first inner shaft 30, A second connection portion 92 to which the second rotor support 56 of the second rotor 50 is connected is formed.

A third connection portion 94 is formed on the upper outer surface of the second outer shaft 22 and connected to the washing tub 120. A fourth connection portion 94 is formed on the upper outer surface of the second inner shaft 32, (96) are formed.

The first connecting portion 90, the second connecting portion 92, the third connecting portion 94 and the fourth connecting portion 96 are connected to the first outer shaft 20, the second outer shaft 22, the first inner shaft 30 Or by a projection formed on the outer surface of the second inner shaft 32 and by a projection formed on the outer surface of the second inner shaft 32. The first and second inner shafts 32 and 33 may be key-

A first fixing nut 34 is fastened to the lower end of the first outer shaft 20 to prevent the first rotor support 46 from being separated from the first outer shaft 20, And a second fixing nut 36 for preventing the second rotor support body 56 of the second rotor 50 from being detached is fastened to the lower end thereof.

A first sleeve bearing 80 is provided on the inner surface of the lower end of the first outer shaft 20 so as to rotatably support the first inner shaft 30, A sleeve bearing 82 and a third sleeve bearing 84 are provided to rotatably support the second inner shaft 32.

A first seal 220 is installed between the second outer shaft 22 and the second inner shaft 32 to prevent wash water from leaking out and the first seal 220 is installed between the second outer shaft 22 and the second bearing housing 600 A second seal 210 is installed to prevent the wash water from leaking.

A first bearing 26 is disposed on the outer surface of the first outer shaft 20 to rotatably support the first outer shaft 20 and a second bearing 28 is provided on the outer surface of the second outer shaft 22. [ And rotatably supports the second outer shaft 22.

The first bearing 26 is seated in the first bearing housing 500 and the second bearing 28 is seated in the second bearing housing 600.

The first bearing housing 500 is formed of a metal material and includes a first bearing seating portion 510 on which the first bearing 26 is seated and a second bearing seating portion 510 extending outwardly from the first bearing seating portion 510, A cover part 520 which is disposed on the outer surface of the planetary gear device 70 so as to surround the planetary gear device 70 with a predetermined gap therebetween and protects the planetary gear device and a cover part 520 extending outwardly from the upper end of the cover part 520, 60 and a flat plate 530 to which the outer tub 120 is fixed.

The second bearing housing 600 is formed of a metal material and has a second bearing seating portion 610 on which the second bearing 28 is seated and a second bearing seating portion 610 extending outwardly from the second bearing seating portion 610, A second seal fixing part 620 to which the second seal fixing part 620 is fixed, a connection part 630 bent in a downward direction in a cylindrical shape and bent in the downward direction at the second seal fixing part 620, And a flat plate portion 640 extended to be fixed to the outer tub 120. [

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Since the flat plate portion 530 of the first bearing housing 500 and the flat plate portion 640 of the second bearing housing 600 are overlapped with each other to strengthen the fastening strength between the stator 60 and the outer tub 120 .

4, the stator 60 includes a stator core 62 arranged in a radial direction, a bobbin 64 made of an insulating material wrapped around the outer circumferential surface of the stator core 62, And a second coil 68 wound on the lower side of the stator core 62. The first coil 66 is wound on the stator core 62 and the second coil 68 is wound on the lower side of the stator core 62. [

The stator core 62 may be formed of a metal mold by compression molding with an amorphous metal powder. In this case, the stator core 62 can be formed by mixing the amorphous metal powder and the binder, or by mixing the amorphous metal powder, the crystalline metal powder having excellent soft magnetic characteristics and the binder at a predetermined ratio. In this case, when the metal powders are mixed at a predetermined ratio as compared with the case where 100% of the amorphous metal powder is used, the difficulty of high-pressure sintering can be solved and the permeability can be increased. The divided cores 72 can also be manufactured by compression molding with only soft magnetic powder.

The stator core 62 may be formed by laminating a plurality of iron pieces. Further, the stator core 62 may be formed by compression molding with an amorphous metal powder and formed by a metal mold and a structure in which a plurality of iron pieces are laminated A composite structure can also be applied.

The stator core 62 includes a first coil winding portion 62a formed on the upper side to wind the first coil 66 and a second coil winding portion 62b formed on the lower side to wind the second coil 68, And a partition 62c for partitioning between the first coil winding portion 62a and the second coil winding portion 62b.

The stator 60 is fixed to the outer tub 110 by the stator support 15.

The stator support body 60 is integrally formed with the stator core 62 by insert molding after arranging the stator core 62 at a predetermined interval in the radial direction.

That is, the stator support 15 is molded by a molding material such as a BMC (Bulk Molding Compound) molding material such as a thermosetting resin such as polyester to mold the stator support 15 in an insert molding manner. At this time, And are integrally formed by arranging them at regular intervals.

The stator support body 15 may be formed separately from the stator core 62 and then bolted to the stator support body 15 in addition to the structure formed integrally with the stator core 62 by insert molding.

The first rotor 40 includes a first magnet 42 arranged in an annular shape with a predetermined gap on the upper surface of the stator 60, a first back yoke 44 disposed on the upper surface of the first magnet 42, And a first rotor support body (46) formed integrally with the first magnet (42) and the first back yoke (44) by insert molding.

The first magnet 42 is disposed radially in the circumferential direction on the first rotor support member 46 and is disposed on the upper surface of the stator 60 so as to face the stator 60 to be wound on the upper side of the stator core 62 Lt; / RTI > coils 66, as shown in FIG.

The first rotor support body 46 is integrally formed with the first magnet 42 and the first back yoke 44 by molding with a BMC (Bulk Molding Compound) molding material such as a thermosetting resin, for example, polyester. Therefore, the first rotor 40 can have a waterproof performance, and the manufacturing process can be shortened.

In addition to this structure, the first rotor support body 46 may also be configured such that the first rotor support body is formed of a metal material capable of acting as a back yoke, and the magnet is fixed to the first rotor support body of the metal material.

The second rotor 50 includes a second magnet 52 arranged annularly with a predetermined gap on the lower surface of the stator 60, a second back yoke 54 disposed on the rear surface of the second magnet 52, And a second rotor support body 56 integrally formed with the second magnet 52 and the second back yoke 54 by insert molding.

The second magnet 52 is arranged radially in the circumferential direction on the second rotor support body 56 and is disposed on the upper surface of the stator so as to face the stator 60 and is wound on a second coil 68).

The second rotor support body 56 is integrally formed with the second magnet 52 and the second back yoke 54 by molding with a molding material of a BMC (Bulk Molding Compound) such as a thermosetting resin, for example, polyester. Therefore, the second rotor 50 can have a waterproof performance, and the manufacturing process can be shortened.

The second rotor support body 56 may have a structure in which the second rotor support body is formed of a metal material capable of acting as a back yoke and the magnet is fixed to the second rotor support body of the metal body.

As described above, the motor 140a of the present invention is of an axial type which is composed of the first rotor 40 disposed on the upper surface of the stator 60 and the second rotor 50 disposed on the lower surface of the stator 60 The driving torque of the first rotor 40 and the driving torque of the second rotor 50 can be equalized.

The motor 140a of the present invention has a first magnetic circuit formed between the first rotor 40 and the stator 60 on which the first coil 66 is wound and a second magnetic circuit between the second rotor 50 and the second A second magnetic circuit is formed between the lower sides of the stator 60 on which the coils 68 are wound and a pair of independent magnetic circuits are formed so that the first rotor 40 and the second rotor 50 are driven separately To form a double stator.

The operation of the washing machine driving apparatus 140 according to the first embodiment of the present invention will be described below.

The second rotor 50 is rotated when power is applied to the second coil 68 and the first inner shaft 30 connected to the second rotor 50 is rotated, Is rotated. The rotational speed of the planetary gear set 70 connected to the first inner shaft 30 is reduced to be transmitted to the second inner shaft 32 and the pulsator 130 connected to the second inner shaft 32 .

As described above, since the rotational speed is reduced by the pulsator 130 and the torque is increased by the planetary gear set 70, the present invention is applicable to a large-capacity washer.

When the pulsator 130 and the dewatering tank 120 are simultaneously rotated during dewatering and rinsing, power is simultaneously applied to the first coil 66 and the second coil 68. Then, the first rotor 40 is rotated and the first outer shaft 20 connected to the first rotor 40 is rotated to rotate the washing tub 120. As the second rotor 50 is rotated, the first inner shaft 30 connected to the second rotor 50 is rotated to rotate the pulsator 130.

When the pulsator 130 and the washing tub 120 are rotated in opposite directions to remove the loosening process and the laundry tangling, power is simultaneously applied to the first coil 66 and the second coil 68, The power source applied to the first coil and the power source applied to the second coil are independently controlled so that the first rotor 40 and the second rotor 50 are rotated in opposite directions to each other to rotate the pulsator 130 and the washing tub 120 Can rotate in opposite directions.

The pulsator 130 and the washing tub 120 can be rotated with a time difference to form various washing water streams so as to form various washing water streams.

FIG. 5 is a sectional view of a drum washing machine according to a second embodiment of the present invention, and FIG. 6 is a sectional view of a washing machine driving apparatus applied to a drum washing machine according to a second embodiment of the present invention.

The drum washing machine according to the second embodiment includes a tub 122 supported by a damper suspended in the case and receiving washing water, a drum 124 rotatably supported in the tub 122 and receiving laundry, And a washing machine driving device 128 mounted on the back surface of the tub 122 and connected to the drum 124 and the driving shaft 10 to drive the drum 124. [

A through hole 118 through which the drive shaft 10 passes is formed in the tub 122 and a bearing 114 for rotatably supporting the drive shaft 10 is mounted on the inner surface of the through hole 118.

The washing machine driving device 128 is of an axial type and includes a stator 60 fixed to the tub 122 and a first stator 60 connected to the outer shaft 17 and having a predetermined gap on one axial surface of the stator 60, And a second rotor (50) disposed at a certain gap on the other surface in the axial direction of the stator and connected to the inner shaft (13).

The stator 60, the first rotor 40 and the second rotor 50 are constituted by an axial member constituted by the stator 60, the first rotor 40 and the second rotor 50 described in the first embodiment Type motor 140a, the description thereof will be omitted.

A first sleeve bearing 152 and a second sleeve bearing 154 are disposed on the inner surface of the outer shaft 17 in a spaced relation to each other with a predetermined gap therebetween on the outer surface of the inner shaft 13, So that the inner shaft 13 is rotatably supported.

A bearing 156 is provided on the outer surface of the outer shaft 17 to rotatably support the outer shaft 17. The bearing 156 can be mounted on the stator support. In this case, since a separate bearing housing for mounting the bearing is not necessary, the structure can be simplified and the number of parts can be reduced.

The planetary gear device 70 includes a ring gear 72 whose one end is connected to the outer shaft 17, a sun gear 74 connected to the inner shaft 13, A plurality of planetary gears 76 that are gear-meshed on the inner surface of the ring gear 72 and each have a rotating shaft 76a and that revolve along the rotation of the sun gear 74 and along the inner surface of the ring gear 72, And a carrier 78 having one side connected to the rotational axis 76a of the plurality of planetary gears 76 and the other side connected to the outer surface of the drive shaft 10. [

A sleeve bearing 19 is rotatably coupled to the outer surface of the drive shaft 10 and the other side extension of the ring gear 72 is rotatably supported by a sleeve bearing 19.

7 is a cross-sectional view of a washing machine driving apparatus according to a third embodiment of the present invention.

The washing machine driving apparatus according to the third embodiment includes outer shafts 20 and 22 connected to the washing tub 120 and an inner shafts 20 and 22 rotatably disposed inside the outer shafts 20 and 22 and connected to the pulsator 130. [ A first rotor 40 connected to the outer shafts 20 and 22; a second rotor 50 connected to the inner shaft 30; a second rotor 40 connected to the first rotor 40 and the second rotor 40; And a stator 60 disposed with an air gap therebetween.

A first bearing 26 and a second bearing 28, which rotatably support the outer shafts 20 and 22, are disposed on the outer circumferential surfaces of the outer shafts 20 and 22 at regular intervals.

The first bearing 26 is supported by the first bearing housing 500 and the second bearing 28 is supported by the second bearing housing 600. The first bearing housing 500 and the second bearing housing 600 are fixed to the outer tub 110.

The outer shafts 20 and 22 are formed in a cylindrical shape to allow the inner shaft 30 to pass therethrough and include a first shaft 20 to which the first rotor 40 is coupled and a second shaft 20 to be connected to the upper side of the first shaft 20 And a second shaft 22 to which the washing tub 120 is coupled.

The first rotor 40, the second rotor 50 and the stator 60 are the same as those of the first rotor 40, the second rotor 50 and the stator 60 described in the first embodiment above .

The driving apparatus of the washing machine according to the third embodiment has the same structure as that of the first embodiment, but does not have the planetary gear device.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

15: stator support body 20, 22: outer shaft
30, 32: Inner shaft 40: First rotor
42: first magnet 44: first back yoke
46: first rotor support 50: second rotor
52: second magnet 54: second back yoke
56: second rotor support 60: stator
62: stator core 64: bobbin
66: first coil 68: second coil
70: planetary gear device 72: ring gear
74: sun gear 76: carrier
78: planetary gear

Claims (17)

An axial-type motor having a first rotor and a second rotor which are driven to rotate independently;
A first outer shaft to which an output of the first rotor is applied;
A first inner shaft to which an output of the second rotor is applied; And
The output of the first rotor is connected to the ring gear via the first outer shaft and the output of the second rotor is connected to the sun gear through the first inner shaft and the output of the second rotor is decelerated from the carrier when the output of the second rotor is connected to the sun gear And the output of the first rotor is output from the ring gear without deceleration when the output of the first rotor is connected to the ring gear;
A second inner shaft for transmitting an output generated from the carrier to a pulsator; And
And a second outer shaft for transmitting an output generated from the ring gear to the washing tub,
The motor
A stator,
A first rotor disposed on one axial surface of the stator and connected to the ring gear through a first outer shaft,
And a second rotor disposed on the other surface in the axial direction of the stator and connected to the sun gear through a first inner shaft, wherein the first rotor and the second rotor have the same rotation torque. The method according to claim 1,
The stator includes a stator core arranged radially,
A bobbin of insulating material wrapped around an outer circumferential surface of the stator core,
A first coil wound on an upper side of the stator core to interact with the first rotor,
And a second coil wound on a lower side of the stator core and interacting with the second rotor. 3. The method of claim 2,
The stator core includes a first coil winding portion around which the first coil is wound, a second coil winding portion around which the second coil is wound, and a partition portion for partitioning the first coil winding portion and the second coil winding portion And the washing machine driving device. 3. The method of claim 2,
The stator core may be a mixture of an amorphous metal powder and a soft magnetic powder, an amorphous metal powder or a soft magnetic powder in a compression molded form, a plurality of iron pieces in a laminated form, or a compression molded form and a laminated iron piece Wherein the washing machine is a washing machine. 3. The method of claim 2,
Wherein the stator is fixed to the stator support, and the stator support is integrally formed with the stator core by insert molding. The method according to claim 1,
The first rotor includes a first magnet disposed radially on the one axial surface of the stator with a predetermined gap therebetween, a first back yoke disposed on an upper surface of the first magnet, a first magnet disposed between the first magnet and the first back yoke, And a first rotor support fixed to the first outer shaft and connected to the first outer shaft. The method according to claim 6,
Wherein the first rotor support body is integrally formed with the first magnet and the first back yoke by insert molding or is formed of a metal material capable of acting as a back yoke. The method according to claim 1,
The second rotor includes a second magnet positioned radially and located at a certain gap on the other surface in the axial direction of the stator, a second back yoke disposed on the back surface of the second magnet, And a second rotor support fixed to the first inner shaft and connected to the first inner shaft. 9. The method of claim 8,
Wherein the second rotor support is integrally formed with the second magnet and the second back yoke by insert molding or is formed of a metal material capable of acting as a back yoke. A washing machine comprising: an outer tub for containing laundry water; a washing tub which is rotatably disposed inside the tub; a washing tub is accommodated in the tub; a pulsator rotatably disposed inside the tub for forming washing water; And a washing machine driving device for simultaneously or selectively driving the washing tub and the pulsator,
Wherein the washing machine driving apparatus is the washing machine driving apparatus according to any one of claims 1 to 9. delete 11. The method of claim 10,
The planetary gear set includes a ring gear that connects the first outer shaft and the second outer shaft, a sun gear that is integrally connected to the first inner shaft, a planetary gear that is meshed with the outer surface of the sun gear and the inner surface of the ring gear, And a carrier rotatably supported by the planetary gear and connected to the second inner shaft. delete A drum type washing machine including a tub receiving the washing water, a drum rotatably supported in the tub and receiving the laundry, and a washing machine driving device mounted on the back surface of the tub and connected to the drum to drive the drum As a result,
The washing machine driving apparatus
A drive shaft connected to the drum at one end thereof and rotatably supported by the tub;
An axial-type motor mounted on a rear surface of the tub and having a first rotor and a second rotor which are driven to rotate independently;
An outer shaft to which an output of the first rotor is applied;
An inner shaft to which an output of the second rotor is applied; And
The output of the first rotor is connected to the ring gear via the outer shaft and the output of the second rotor is connected to the sun gear via the inner shaft and a decelerated output is generated from the carrier when the output of the second rotor is connected to the sun gear And an output from the carrier is connected to the drum through the drive shaft,
The motor
A stator,
A first rotor disposed on one axial surface of the stator and connected to the ring gear through an outer shaft,
And a second rotor disposed on the other surface in the axial direction of the stator and connected to the sun gear through an inner shaft, wherein the first rotor and the second rotor have the same rotation torque. 15. The method of claim 14,
Wherein the tub is provided with a through hole through which a driving shaft connected to the drum passes, and a bearing for rotatably supporting the driving shaft is mounted on an inner surface of the through hole. 15. The method of claim 14,
The planetary gear set includes a ring gear having one end connected to an outer shaft, a sun gear connected to the inner shaft, and an inner shaft and an outer shaft, which are respectively engaged with the outer surface of the sun gear and the inner surface of the ring gear, And a carrier having one side connected to the rotation shaft of the plurality of planetary gears and the other side connected to the outer surface of the drive shaft. . A drive shaft connected to the drum at one end thereof and rotatably supported by the tub;
An axial-type motor mounted on a rear surface of the tub and having a first rotor and a second rotor which are driven to rotate independently;
An outer shaft to which an output of the first rotor is applied;
An inner shaft to which an output of the second rotor is applied; And
The output of the first rotor is connected to the ring gear via the outer shaft and the output of the second rotor is connected to the sun gear via the inner shaft and a decelerated output is generated from the carrier when the output of the second rotor is connected to the sun gear And an output from the carrier is connected to the drum through the drive shaft,
The motor
A stator,
A first rotor disposed on one axial surface of the stator and connected to the ring gear through an outer shaft,
And a second rotor disposed on the other surface in the axial direction of the stator and connected to the sun gear through an inner shaft, wherein the first rotor and the second rotor have the same rotation torque.
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KR101955983B1 (en) * 2017-02-24 2019-03-11 엘지전자 주식회사 Axial air gap electric motor and clothes treating apparatus having the same
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101289289B1 (en) * 2011-12-22 2013-07-24 주식회사 아모텍 Motor having one-body type stator core
KR101491050B1 (en) * 2013-01-28 2015-02-23 주식회사 아모텍 Driving motor and driving method and drum washing machine having the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101289289B1 (en) * 2011-12-22 2013-07-24 주식회사 아모텍 Motor having one-body type stator core
KR101491050B1 (en) * 2013-01-28 2015-02-23 주식회사 아모텍 Driving motor and driving method and drum washing machine having the same

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