CN107109757B - Washing machine motor and washing machine with same - Google Patents
Washing machine motor and washing machine with same Download PDFInfo
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- CN107109757B CN107109757B CN201580061098.4A CN201580061098A CN107109757B CN 107109757 B CN107109757 B CN 107109757B CN 201580061098 A CN201580061098 A CN 201580061098A CN 107109757 B CN107109757 B CN 107109757B
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- bearing
- washing machine
- stator
- rotor
- washing
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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
Abstract
The washing machine motor of the present invention comprises: an outer shaft connected with the washing tank; the inner shaft is connected with the impeller; an outer rotor connected with the outer shaft for driving the washing tank; an inner rotor connected with the inner shaft and used for driving the impeller; a stator disposed between the inner rotor and the outer rotor with a gap therebetween; and a first bearing and a second bearing which are arranged with a predetermined interval therebetween and support the outer shaft in a rotatable manner, wherein a first connection portion for connecting the outer rotor is formed between the first bearing and the second bearing in the outer shaft. By disposing the first connection part for connecting the outer rotor and the outer shaft between the first bearing and the second bearing, the washing machine motor can reduce the total height of the motor, thereby reducing the total height of the washing machine or increasing the size of the washing tank.
Description
Technical Field
The present invention relates to a washing machine motor capable of forming a plurality of washing water flows by independently driving a washing tub and a pulsator, respectively, and a washing machine having the same.
Background
As disclosed in korean patent laid-open publication No. 10-0548310(2006, 01, 24), the conventional washing machine includes: a housing for forming a profile; an outer tub supported inside the housing and containing washing water therein; an inner washing and dewatering tank rotatably housed in the outer tank; a Pulsator (Pulsator) which is provided inside the inner tub so as to be relatively rotatable, and forms a washing water flow; a driving motor for generating a driving force for rotating the inner tub and the pulsator; an inner tank rotating shaft for receiving the driving force of the driving motor to rotate the inner tank; a pulsator rotating shaft which receives a driving force of the driving motor to rotate a pulsator; a central gear connected with the driving motor and the rotary shaft of the wave wheel; a plurality of planet gears simultaneously meshing with the sun gear and the ring gear; a carrier that supports the planetary gear so as to be capable of rotating and revolving; and a clutch spring for controlling the rotation of the inner tank and the pulsator when washing or dehydrating.
The conventional washing machine as described above includes a planetary gear set including a sun gear, a ring gear, a planetary gear and a carrier, and transmits a rotational force of a driving motor to the pulsator and the inner tub by reducing the rotational force, and selectively transmits a power to the pulsator and the inner tub by activating a clutch spring, thereby rotating only the pulsator or simultaneously rotating the pulsator and the inner tub.
As described above, the conventional washing machine employs a motor having a single power structure in which the pulsator and the inner tub cannot be independently controlled, and thus only a washing water flow of a predetermined pattern can be displayed, and it is difficult to improve washing efficiency.
Further, the conventional washing machine requires a planetary gear set, a clutch spring, and the like in order to selectively rotate the pulsator and the inner tub, and thus has problems of complicated structure and increased manufacturing cost.
Further, in the conventional washing machine, since the planetary gear set and the clutch spring are provided between the driving motor and the outer tub, the washing machine occupies a large space in a height direction, which causes a problem of increasing the height of the washing machine, or when the heights of the washing machines are the same, it is necessary to reduce the height of the inner tub, which causes a problem of reducing the washing capacity.
Disclosure of Invention
Technical problem
An object of the present invention is to provide a motor for a washing machine and a washing machine having the same, which can independently control a pulsator and a washing tub, thereby embodying not only a single power but also a double power for rotating the pulsator and the washing tub in opposite directions, thereby forming various washing water streams.
It is still another object of the present invention to provide a motor for a washing machine and a washing machine having the same, in which an outer rotor having a large driving torque is connected to a washing tub requiring a high torque, and an inner rotor having a small driving torque is connected to a pulsator capable of being driven with a low torque, thereby improving performance and reducing power consumption.
Another object of the present invention is to provide a motor for a washing machine and a washing machine having the same, in which an outer rotor is connected between a first bearing and a second bearing for supporting an outer shaft to reduce the total height of the motor, thereby reducing the total height of the washing machine or increasing the size of a washing tub.
It is still another object of the present invention to provide a motor for a washing machine and a washing machine having the same, in which a first bearing is mounted to a stator support body, so that an additional bearing housing for mounting the first bearing can be removed, thereby reducing the number of parts and simplifying an assembly process.
Means for solving the problems
The washing machine motor of the invention is characterized by comprising: an outer shaft connected with the washing tank; the inner shaft is connected with the impeller; an outer rotor connected with the outer shaft for driving the washing tank; an inner rotor connected with the inner shaft and used for driving the impeller; and a stator disposed with a gap between the inner rotor and the outer rotor, the outer rotor generating a larger torque than the inner rotor.
The washing machine motor according to the present invention further includes a first bearing and a second bearing disposed with a predetermined space therebetween for rotatably supporting the outer shaft, wherein a first connection portion for connecting the outer rotor is formed in the outer shaft between the first bearing and the second bearing.
In this case, the second bearing may be mounted to a stator support body of the stator.
The inner rotor may include: a first magnet disposed with a predetermined gap in an inner surface of the stator; a first back yoke disposed on a back surface of the first magnet; and an inner rotor support body which fixes the first magnet and the first back yoke and is connected to the inner shaft.
The outer rotor may include: a second magnet disposed with a predetermined gap between outer surfaces of the stators; a second back yoke disposed on a back surface of the second magnet; and an outer rotor support body which fixes the second magnet and the second back yoke and is connected to the outer shaft.
The stator may include: a stator core in which a plurality of teeth are radially arranged along an inner side and an outer side; a first coil wound around an inner tooth portion of the stator core; a second coil wound around an outer tooth of the stator core; and a stator support fixed to the outer groove for fixing the stator core.
The stator support body may include: a core fixing portion integrally formed with the stator core; a second bearing mounting part extending from the core fixing part to an inner side direction for mounting a second bearing for supporting an outer shaft; and an outer tank fixing portion extending outward from the core fixing portion and fixed to the outer tank.
The above stator core may include: a first tooth portion for winding a first coil; a second tooth portion formed on the opposite side of the first tooth portion and around which a second coil is wound; a dividing portion for dividing a space between the first tooth portion and the second tooth portion; and a coupling portion formed at both side end portions of the dividing portion for coupling the plurality of stator cores to each other.
The first connector and the second connector may be independently provided on the outer surface of the stator support, or may be integrally formed on the outer surface of the stator support, the first connector being configured to apply an external power to the first coil, and the second connector being configured to apply an external power to the second coil.
The outer rotor support body connected from the outer rotor to the outer shaft and the inner rotor support body connected from the inner rotor to the inner shaft may include flat plate portions, respectively, and the flat plate portions may be arranged in parallel with each other.
The first bearing may be mounted to a bearing housing, and the bearing housing may include: a first bearing setting part for setting a first bearing; a seal fixing portion extending from the first bearing installation portion and configured to mount a second seal; a connecting portion extending downward from the seal fixing portion; and a flat plate portion horizontally extending from the connecting portion to form a disk shape for fixing the stator and the outer tub.
According to another feature of the present invention, a washing machine motor is characterized by comprising: an outer shaft connected with the washing tank; the inner shaft is connected with the impeller; an outer rotor connected with the outer shaft for driving the washing tank; an inner rotor connected with the inner shaft and used for driving the impeller; a stator disposed between the inner rotor and the outer rotor with a gap therebetween; and a first bearing and a second bearing which are arranged with a predetermined interval therebetween and support the outer shaft in a rotatable manner, wherein a first connection portion for connecting the outer rotor is formed between the first bearing and the second bearing in the outer shaft.
The washing machine of the present invention is characterized by comprising: an outer tub for receiving washing water; a washing tank rotatably disposed inside the outer tank for performing washing and dehydration; a pulsator rotatably disposed inside the washing tub to form a washing water stream; and a washing machine motor for simultaneously or selectively driving the washing tub and the pulsator.
ADVANTAGEOUS EFFECTS OF INVENTION
As described above, according to the motor for a washing machine of the present invention, the pulsator and the washing tub can be independently controlled, and thus, not only a single power but also a dual power that can rotate the pulsator and the washing tub in opposite directions can be embodied, thereby forming various washing water streams.
In addition, according to the washing machine motor of the present invention, the outer rotor having a large driving torque is connected to the washing tub requiring a high torque, and the inner rotor having a small driving torque is connected to the pulsator capable of being driven with a low torque, thereby improving performance and reducing power consumption.
Also, according to the washing machine motor of the present invention, the outer rotor is connected between the first bearing and the second bearing for supporting the outer shaft in such a manner that the outer shaft can be rotated, whereby a minimum distance for supporting the outer shaft is secured between the first bearing and the second bearing, and the total height of the motor can be reduced, whereby the total height of the washing machine can be reduced or the size of the washing tub can be increased.
In this case, the outer rotor support body connected from the outer rotor to the outer shaft and the inner rotor support body connected from the inner rotor to the inner shaft each include flat plate portions, and if the flat plate portions are arranged in parallel with each other, the height of the motor can be reduced.
Also, according to the washing machine motor of the present invention, the first bearing is mounted to the stator support body, so that an additional bearing housing for mounting the first bearing can be removed, thereby reducing the number of parts and simplifying the assembly process.
Drawings
Fig. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.
Fig. 2 is a sectional view of a motor of a washing machine according to a first embodiment of the present invention.
Fig. 3 is a plan view of a motor of a washing machine of the present invention.
Fig. 4 is a top view of the stator of the present invention.
Fig. 5 is a top view of a stator core of the present invention.
Fig. 6 is a sectional view of a washing machine according to a second embodiment of the present invention.
Fig. 7 is a sectional view of a motor of a washing machine according to a second embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the sizes, shapes, and the like of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of description. Also, terms specifically defined in consideration of the structure and action of the present invention may be changed according to the intention or practice of a user or an operator. The definition of such terms shall be based on the content of the present specification throughout.
Referring to fig. 1 and 2, a washing machine according to an embodiment of the present invention includes: a housing 100 for forming an outer shape; an outer tub 110 suspended and supported inside the housing 100 to receive washing water; a washing tub 120 rotatably disposed inside the outer tub 110 for performing washing and dehydration; a pulsator 130 rotatably disposed inside the washing tub 120, for forming a washing water current; and a motor 140 disposed at a lower portion of the washing tub 120, and simultaneously or selectively driving the washing tub 120 and the pulsator 130.
As shown in fig. 2, the washing machine motor 140 includes: an outer shaft 20 connected to the washing tub 120; an inner shaft 30 rotatably disposed inside the outer shaft 20 and connected to the pulsator 130; an outer rotor 50 connected to the outer shaft 20; an inner rotor 40 connected to the inner shaft 30; and a stator 60 disposed with a gap between the inner rotor 40 and the outer rotor 50.
A first sleeve bearing 80 and a second sleeve bearing 82 in a cylindrical form are provided between the outer peripheral surface of the inner shaft 30 and the inner peripheral surface of the outer shaft 20, and are supported so as to relatively rotate the outer shaft 20 and the inner periphery 30.
The first bearing 26 and the second bearing 28 are disposed at a predetermined interval on an outer surface of the outer shaft 20, and support the outer shaft 20 so that the outer shaft 20 can rotate.
The first bearing 26 is mounted to the bearing housing 10 and the second bearing 28 is mounted to the stator support 230.
Here, since the second bearing 28 is mounted to the stator support 230, an additional bearing housing for mounting the second bearing 28 is not required, so that the number of parts can be reduced and the assembly process can be simplified.
The bearing housing 10 includes: a first bearing installation part 12 made of a metal material for installing a first bearing 26; a seal fixing portion 14 extending in an upper direction from the first bearing installation portion 12 for mounting the second seal 210; a connecting portion 16 extending downward from the seal fixing portion 14; and a flat plate portion 18 extending horizontally from the connecting portion 16 in a disk shape for fixing the stator 60 and the outer tub 110.
A first connection portion 90 connected to the outer rotor support body 56 of the outer rotor 50 is formed at the center side of the outer shaft 20, and a second connection portion 92 connected to the inner rotor support body 46 of the inner rotor 40 is formed at the lower side of the inner shaft 30.
Wherein, the first connection part 90 is formed between the first bearing and the second bearing, therefore, the total height of the motor can be reduced. That is, in the conventional motor, the first connection portion is formed toward the lower side of the second bearing 28, and in this case, the length of the outer shaft 20 is increased by a length corresponding to the length of the first connection portion 90.
The first bearing 26 and the second bearing 28 are subjected to the total load of the washing machine, and therefore, the interval between the first bearing 26 and the second bearing 28 needs to be maintained to a sufficient degree that the load can be sufficiently dispersed and stably supported.
In the present embodiment, the first connection portion 90 is disposed between the first bearing 26 and the second bearing 28, so that the length of the outer shaft can be reduced by a length corresponding to the length of the first connection portion which has been conventionally formed at the lower side of the second bearing 28 of the outer shaft, thereby reducing the height of the washing machine motor.
If the height of the motor is reduced, the total height of the washing machine can be reduced, the washing machine is simple and convenient when a user places the washings on the top, and the size of the washing tank can be increased under the condition of the same total height, so that the capacity of the washing machine can be increased.
A second connecting portion 92 is formed in the lower inner shaft of the second bearing 28.
The first and second connection portions 90 and 92 are Serration (Serration) coupled to the outer and inner shafts 20 and 30, respectively, or spline-coupled to each other, or key-coupled to each other by forming a key groove.
A first fixing nut 34 for preventing the outer rotor support body 56 from being separated from the outer shaft 20 is bolted to the lower side of the first connection portion 90 of the outer shaft 20, and a second fixing nut 36 for preventing the inner rotor support body 46 of the inner rotor 40 from being separated is bolted to the lower end of the inner shaft 30.
A third connection part 94 connected to the washing tub 120 is formed at an upper side of the outer shaft 20, and a fourth connection part 96 connected to the pulsator 130 is formed at an upper side of the inner shaft 32.
The third and fourth connecting portions 94 and 96 are Serration (Serration) coupled to the outer and inner shafts 20 and 30, respectively, or spline-coupled to each other by forming a key groove.
A first seal 220 for preventing leakage of the washing water is installed between the outer shaft 20 and the inner shaft 30, and a second seal 210 for preventing leakage of the washing water is installed between the outer shaft 20 and the first bearing housing 10.
The inner rotor 40 includes: a first magnet 42 disposed with a predetermined gap in an inner surface of the stator 60; a first back yoke 44 disposed on the back surface of the first magnet 42; and an inner rotor support 46 integrally formed with the first magnet 42 and the first back yoke 44 by insert molding.
The inner rotor support 46 is formed integrally with the first magnet 42 and the first back yoke 44 by injection Molding thermosetting resin as an injection Molding material, for example, Bulk Molding Compound (BMC) such as polyester fiber polyester as an injection Molding material. Therefore, the inner rotor 40 can have waterproof performance, and the manufacturing process can be shortened.
Further, the inner rotor support body may be formed of a steel material in addition to a resin material manufactured by insert injection molding. Under the condition that the inner rotor supporting body is formed by steel, the outer rotor supporting body plays a role of a back yoke, so that an extra back yoke is not needed, and the inner rotor supporting body is subjected to sawtooth processing or extra sawteeth are embedded and injected on the outer rotor supporting body of the steel to fix the first magnet.
The inner rotor support 46 has an inner face connected to the inner shaft 30, and the first magnet 42 and the first back yoke 44 are integrally fixed to the outer face.
Therefore, when the inner rotor 40 rotates, the inner shaft 30 rotates, and the pulsator 130 connected to the inner shaft 30 rotates.
The driving torque of the inner rotor 40 is smaller than that of the outer rotor, and the torque of the pulsator 130 needs to be smaller than that of the washing tub, so that the inner rotor 40 can sufficiently rotate the pulsator 130.
Further, the outer rotor 50 includes: a second magnet 52 disposed with a predetermined gap between outer surfaces of the stators 60; a second back yoke 54 disposed on the back surface of the second magnet 52; and an outer rotor support 56 formed integrally with the second magnet 52 and the second back yoke 54 by insert molding.
The outer rotor support 56 is formed integrally with the second magnet 52 and the second back yoke 54 by injection molding thermosetting resin as an injection molding material, for example, by injection molding a bulk molding compound such as polyester fiber polyester as an injection molding material. Therefore, the outer rotor 50 may have waterproof performance, and the manufacturing process may be shortened.
The outer rotor support body may be formed of a steel material in addition to a resin material manufactured by insert injection molding. Under the condition that the outer rotor supporting body is formed by steel, the outer rotor supporting body plays a role of a back yoke, so that an extra back yoke is not needed, and sawtooth processing is carried out on the steel outer rotor supporting body or extra sawteeth are embedded and injected on the steel outer rotor supporting body to fix the second magnet.
The second magnet and the second back yoke are integrally formed by insert molding on the inner side of the outer surface of the outer rotor support 56, and the inner surface is connected to the outer shaft 20 through a part of the surface of the stator 60.
Therefore, when the outer rotor 50 rotates, the outer shaft 20 rotates, and the washing tub 120 connected to the outer shaft 20 rotates.
The torque of the outer rotor 50 is greater than that of the inner rotor 40, and the torque of the washing tub 120 is greater than that of the pulsator 130.
As described above, in the washing machine motor 140 according to the present invention, the outer rotor support body 56 connected from the outer rotor 50 to the outer shaft 20 is disposed between the first bearing 26 and the second bearing 28, and the outer rotor support body 56 and the inner rotor support body 46 each include a flat plate portion. Further, the outer rotor support body 56 and the inner rotor support body 46 can reduce the height of the motor as the flat plate portions are arranged in parallel with each other.
In addition, in the washing machine motor 140 of the present invention, the outer rotor 50 having a large driving torque is connected to the washing tub 120 requiring a large torque, and the inner rotor 40 having a relatively smaller torque than the outer rotor 50 is connected to the pulsator 130 requiring a relatively smaller torque than the washing tub, so that the performance of the washing machine can be improved and the power consumption can be reduced.
As shown in fig. 3, the stator 60 includes: a stator core 62 in which a plurality of teeth are radially arranged along the inner side and the outer side; a bobbin 64 as a non-magnetic body wound around the outer peripheral surface of the stator core 62; a first coil 66 wound around one side of the stator core 62; a second coil 68 wound around the other side of the stator core 62; and a stator support 230 fixed to the outer slot 110 for arranging the stator cores 62 in a ring shape.
After stator core 62 is disposed at stator support 230 at a predetermined interval in the circumferential direction in a mold, stator support 230 and stator core 62 are formed integrally by insert injection.
That is, when the stator support 102 is molded by insert injection by injecting a thermosetting resin as an injection material, for example, a bulk molding compound of fibers such as polyester, the plurality of stator cores 62 are arranged in a mold at predetermined intervals in the circumferential direction and are integrated with the stator support 102.
The stator support 230 includes: a core fixing portion 232 integrally formed with the stator core 62; a second bearing mounting part 236 extending from an upper end of the core fixing part 232 in an inward direction for mounting the second bearing 28; and an outer tub fixing portion 234 extending outward from the lower end of the core fixing portion 232 and fixed to the outer tub 110.
As described above, the stator support body 230 is formed integrally with the second bearing mounting portion 236 to mount the second bearing 28, whereby the bearing housing for mounting the second bearing can be removed.
As shown in fig. 4 and 5, the stator core 62 includes: a first tooth 310 for winding the first coil 66; a second tooth portion 312 formed on the opposite side of the first tooth portion 310 for winding the second coil 68; a dividing portion 314 for dividing the space between the first tooth portion 310 and the second tooth portion 312; and coupling portions 320 and 322 formed at both side end portions of the dividing portion 314 for coupling the plurality of stator cores 62 to each other.
The stator core described above can be applied not only to the split core described above but also to a cylindrical core form. That is, the cylindrical core is circular in shape with the first tooth portion and the second tooth portion arranged at a predetermined interval in the circumferential direction.
Further, the stator core is in an arc-shaped state divided into a plurality of arc-shaped states, and the stator cores in the plurality of arc-shaped states are combined with each other to form a ring.
However, since the first power source is applied to the first coil 66 and the second power source is applied to the second coil 68, when the power source is applied only to the first coil 66, only the inner rotor 40 is rotated, when the power source is applied only to the second coil 68, only the outer rotor 50 is rotated, and when the power sources are applied to the first coil 66 and the second coil 68 at the same time, the inner rotor 40 and the outer rotor 50 are rotated at the same time.
A first flange 316 facing the first magnet 44 is formed at a tip end portion of the first tooth 310, and a second flange 318 facing the second magnet 54 is formed at a tip end portion of the second tooth 312.
The first flange 316 and the second flange 318 are formed to have an inward curved surface and an outward curved surface with a predetermined curvature so as to correspond to the first magnet 42 of the inner rotor 40 and the second magnet 52 of the outer rotor 50, respectively. Accordingly, the roundness of the inner and outer circumferential surfaces of the stator core 62 is improved, so that the inner and outer circumferential surfaces of the stator 60 can be brought close to the first and second magnets 42 and 52, and a predetermined magnetic gap (gap) can be maintained.
The stator cores 62 should have a direct connection therebetween in such a manner that a magnetic circuit can be formed. Therefore, the coupling portions 320 and 322 have a structure in which the stator cores 62 are directly connected to each other so that the stator cores can be electrically connected to each other.
For example, in the coupling portions 320 and 322, coupling protrusions 322 are formed to protrude from one side of the partition 314, coupling grooves 320 for engaging the coupling protrusions 322 are formed in the other side of the partition 314, and when the coupling portions are assembled by engaging the coupling protrusions 322 in the coupling grooves 320, the stator cores 62 are radially arranged and directly coupled to each other.
In addition to the above-described structure, the coupling portion may be formed by forming pin holes in both side end portions of the divided portion of the stator core and connecting the stator cores by fitting pin members between the pin holes of the two stator cores in a state where the plurality of cores are brought into contact with each other, or may be formed by caulking the plurality of stator cores by using caulking members in a state where the plurality of stator cores are brought into contact with each other.
Connectors 162 and 164 for applying external power to the first coil 66 and the second coil 68 are provided on the outer side of the stator support 230. The connectors 162, 164 include: a first connector 162 connected to a power source for rotating the washing tub 110, that is, to an external power source applied to the first coil 66; and a second connector 164 connected to a power source for rotating the pulsator 130, i.e., to apply a power source to the second coil 68.
Here, the first connector 162 and the second connector 164 are separately manufactured and separately provided to the stator support 230, respectively, and the first connector 162 and the second connector 164 may be integrally formed and provided to the stator support 230.
When the stator support 230 is insert-molded, the first connector 162 and the second connector 164 are formed as one body.
The first connector, the second connector, and the stator support are separately manufactured and then attached to the connector attachment portion formed in the stator support.
In the washing machine motor of the present invention as described above, since the first magnetic circuit L1 is formed between the inner rotor 40 and one side of the stator 60 around which the first coil 66 is wound and the second magnetic circuit L2 is formed between the outer rotor 50 and the other side of the stator 60 around which the second coil 68 is wound, a pair of magnetic circuits independent of each other are formed, and therefore, the inner rotor 40 and the outer rotor 50 can be driven independently of each other.
Specifically, the first magnetic path L1 passes through the N-pole first magnet 42, the first tooth 310 around which the first coil 66 is wound, the inner portion of the dividing portion 314, the S-pole first magnet 42 adjacent to the N-pole first magnetic path 42, and the inner rotor support 46.
The second magnetic path L2 passes through the second magnet 52 of the N-pole, the second tooth 312 facing the second magnet 52 of the N-pole and around which the second coil 68 is wound, the outer portion of the dividing portion 314, the second magnet 54 of the S-pole, and the outer rotor support 56.
Referring to fig. 6 and 7, a washing machine and a washing machine motor according to a second embodiment of the present invention will be described.
As shown in fig. 7, in the washing machine motor according to the second embodiment of the present invention, the remaining structure is the same as that of the first embodiment except for the bearing support structure supporting the outer shaft, the position of the outer shaft, and the stator support body.
Therefore, in the second embodiment, the same portions as those of the first embodiment are given the same reference numerals, and detailed description thereof is omitted.
Hereinafter, a bearing support structure supporting the outer shaft of the washing machine motor 140a according to the second embodiment of the present invention will be described.
The first bearing 26 and the second bearing 28 are disposed at a predetermined interval on an outer surface of the outer shaft 20, and support the outer shaft 20 so that the outer shaft 20 can rotate.
Like the first embodiment, the first bearing 26 is supported by the first bearing housing 10, and the second bearing 28 is supported by the second bearing housing 102.
The first bearing housing 10 includes: a first bearing installation part 12 made of a metal material for installing a first bearing 26; a seal fixing portion 14 extending in an upper direction from the first bearing installation portion 12 for mounting the second seal 210; a connecting portion 16 extending downward from the seal fixing portion 14; and a flat plate portion 18 extending horizontally from the connecting portion 16 in a disk shape for fixing the stator 60 and the outer tub 110.
The plate portion 18 is coupled to the second bearing housing 102 by a plurality of bolts 250.
The second bearing housing 102 includes: a second bearing installation part 104 made of a metal material for installing the second bearing 28; an extension portion 106 extending in an upward direction from the second bearing installation portion 104; the fixing portion 108 extends outward from the upper end of the connecting portion 106 and is coupled to the flat plate portion 18 of the first bearing housing 10 by a bolt 250.
In the second embodiment, the outer rotor support 56 is not disposed between the first bearing 26 and the second bearing 28 in the outer rotor 50, but is disposed below the second bearing 28.
A first connection portion 90 connected to the outer rotor support body 56 of the outer rotor 50 is formed at a lower side of the outer shaft 20, and a second connection portion 92 connected to the inner rotor support body 46 of the inner rotor 40 is formed at a lower side of the inner shaft 30.
The first and second connection parts 90 and 92 may be splined to the outer shaft 20 and the inner shaft 30, respectively, and may be splined to each other by forming a key groove.
A first fixing nut 34 for preventing the outer rotor support body 56 from being separated from the outer shaft 20 is bolted to the lower end of the outer shaft 20, and a second fixing nut 36 for preventing the inner rotor support body 46 of the inner rotor 40 from being separated from the inner shaft 30 is bolted to the lower end of the inner shaft.
In the second embodiment, the stator support body 230 includes: a core fixing portion 232 integrally formed with the stator core 62; and an outer tub fixing portion 234 extending outward from the lower end of the core fixing portion 232 and fixed to the outer tub 110.
The operation of the washing machine motor according to the present invention configured as described above will be described below.
First, when only the pulsator 130 is driven during washing, the inner rotor 40 rotates and the inner shaft 30 connected to the inner rotor 40 rotates when power is applied to the first coil 66. Also, the pulsator 130 connected to the inner shaft 30 is rotated.
When only washing tub 120 is rotated, when power is applied to first coil 68, outer rotor 50 is rotated by magnetic circuit L2, and outer shaft 20 connected to outer rotor 50 is rotated to rotate washing tub 120.
At this time, the wash tank 120 receives the rotational force of the outer rotor 50 having a large driving torque, and thus, it is convenient to rotate the wash tank 120 requiring a large torque. Accordingly, the capacity of the washing machine can be increased, and a large capacity washing machine can be embodied.
In addition, when the pulsator 130 and the dehydrating tub 120 are rotated simultaneously during the dehydration and the rinsing, power is simultaneously applied to the first and second coils 66 and 68. Therefore, the inner rotor 40 is rotated by the magnetic circuit L1, and the inner shaft 30 connected to the inner rotor 40 is rotated to rotate the pulsator 130. Then, the outer rotor 50 is rotated by the magnetic circuit L2, and the outer shafts 20 and 22 connected to the outer rotor 50 are rotated to rotate the washing tub 120.
When the pulsator 130 and the washing tub 120 are rotated in opposite directions to perform an unwinding stroke, to release entanglement of laundry, or the like, power in opposite directions is applied to the first and second coils 66 and 68. Accordingly, the inner rotor 40 and the outer rotor 50 rotate in opposite directions, and the pulsator 130 and the washing tub 120 rotate in opposite directions.
While the present invention has been described with reference to the preferred embodiments, it is to be understood that the present invention is not limited to the embodiments described above, and various changes and modifications may be made by one skilled in the art without departing from the spirit of the present invention.
Industrial applicability
The present invention is applicable to a washing machine motor and an electric washing machine having the same, in which a pulsator and a washing tub are independently controlled, the washing tub is connected to an outer rotor having a large driving torque, and the pulsator is connected to an inner rotor having a small driving torque, thereby improving performance and reducing power consumption.
Claims (10)
1. A motor for a washing machine, which comprises a motor body,
the method comprises the following steps:
an outer shaft connected with the washing tank;
the inner shaft is connected with the impeller;
an outer rotor connected with the outer shaft for driving the washing tank;
an inner rotor connected with the inner shaft and used for driving the impeller; and
a stator disposed between the inner rotor and the outer rotor with a gap therebetween,
it is characterized in that the preparation method is characterized in that,
the outer rotor is connected with the outer shaft through an outer rotor supporting body, the inner rotor is connected with the inner shaft through an inner rotor supporting body,
the washing machine motor further includes a first bearing and a second bearing disposed on an outer surface of the outer shaft with a predetermined interval therebetween to rotatably support the outer shaft, the second bearing being mounted to a stator support body of a stator,
in the outer shaft, a first connection portion for connecting the outer rotor support is formed between the first bearing and the second bearing.
2. A washing machine motor according to claim 1, wherein the inner rotor includes:
a first magnet disposed with a predetermined gap in an inner surface of the stator;
a first back yoke disposed on a back surface of the first magnet; and
and an inner rotor support body which fixes the first magnet and the first back yoke and is connected with the inner shaft.
3. A washing machine motor according to claim 1, wherein the outer rotor comprises:
a second magnet disposed with a predetermined gap between outer surfaces of the stators;
a second back yoke disposed on a back surface of the second magnet; and
and an outer rotor support body which fixes the second magnet and the second back yoke and is connected to the outer shaft.
4. A washing machine motor according to claim 1, wherein the stator comprises:
a stator core in which a plurality of teeth are radially arranged along an inner side and an outer side;
a first coil wound around an inner tooth portion of the stator core;
a second coil wound around an outer tooth of the stator core; and
and a stator support fixed to the outer groove for fixing the stator core.
5. A washing machine motor according to claim 4, characterized in that the stator support body comprises:
a core fixing portion integrally formed with the stator core;
a second bearing mounting part extending from the core fixing part to an inner side direction for mounting a second bearing for supporting an outer shaft; and
and an outer tank fixing portion extending outward from the core fixing portion and fixed to the outer tank.
6. A washing machine motor according to claim 4, characterized in that the stator core comprises:
a first tooth portion for winding a first coil;
a second tooth portion formed on the opposite side of the first tooth portion and around which a second coil is wound;
a dividing portion for dividing a space between the first tooth portion and the second tooth portion; and
and coupling portions formed at both side end portions of the dividing portion to couple the plurality of stator cores to each other.
7. A washing machine motor according to claim 4, wherein a first connector for applying an external power to the first coil and a second connector for applying an external power to the second coil are separately provided at an outer face of the stator support body, or the first connector and the second connector are integrally formed at the outer face of the stator support body.
8. A washing machine motor according to claim 1, wherein the outer rotor support body and the inner rotor support body respectively include flat plate portions, and the flat plate portions are arranged in parallel with each other.
9. A washing machine motor according to claim 1,
the first bearing is arranged on the bearing outer cover,
the bearing housing includes:
a first bearing setting part for setting a first bearing;
a seal fixing portion extending from the first bearing installation portion and configured to mount a second seal;
a connecting portion extending downward from the seal fixing portion; and
and a flat plate portion horizontally extending from the connecting portion to form a disk shape for fixing the stator and the outer tub.
10. A washing machine, characterized by comprising:
an outer tub for receiving washing water;
a washing tank rotatably disposed inside the outer tank for performing washing and dehydration;
a pulsator rotatably disposed inside the washing tub to form a washing water stream; and
the washing machine motor as claimed in any one of claims 1 to 9, simultaneously or selectively driving the washing tub and the pulsator.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0160979 | 2014-11-18 | ||
| KR1020140160980A KR101648486B1 (en) | 2014-11-18 | 2014-11-18 | Driving apparatus and washing machine |
| KR1020140160979A KR101628203B1 (en) | 2014-11-18 | 2014-11-18 | Driving apparatus and washing machine |
| KR10-2014-0160980 | 2014-11-18 | ||
| PCT/KR2015/012396 WO2016080753A1 (en) | 2014-11-18 | 2015-11-18 | Washing machine motor and washing machine comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107109757A CN107109757A (en) | 2017-08-29 |
| CN107109757B true CN107109757B (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580061098.4A Active CN107109757B (en) | 2014-11-18 | 2015-11-18 | Washing machine motor and washing machine with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107109757B (en) |
| WO (1) | WO2016080753A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440385B (en) * | 2018-12-20 | 2020-09-01 | 宁波市弘露电子商务有限公司 | Washing machine |
| US11773525B2 (en) * | 2019-05-02 | 2023-10-03 | Whirlpool Corporation | Double-rotor washing type drum washing machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043153A (en) * | 2004-08-04 | 2006-02-16 | Nidec Shibaura Corp | Washing machine |
| KR20080092023A (en) * | 2007-04-10 | 2008-10-15 | 주식회사 아모텍 | Power transmission device for washing machine, driving device for washing machine and full automatic washing machine using the same |
| CN102212954A (en) * | 2010-04-09 | 2011-10-12 | 常州至精精机有限公司 | Differential linkage clutch device of washing machine |
| CN102877270A (en) * | 2012-10-22 | 2013-01-16 | 安徽聚隆传动科技股份有限公司 | Motor direct-drive transmission mechanism of washing machine |
| KR20140079257A (en) * | 2012-12-18 | 2014-06-26 | 주식회사 아모텍 | Driving apparatus and washing machine |
| KR20140079699A (en) * | 2012-12-18 | 2014-06-27 | 주식회사 아모텍 | Driving apparatus and washing machine |
| KR20140097956A (en) * | 2013-01-28 | 2014-08-07 | 주식회사 아모텍 | Outer rotor type motor and drum type washing machine having the same |
| CN104099754A (en) * | 2013-04-11 | 2014-10-15 | 安徽聚隆传动科技股份有限公司 | Washing machine motor direct-drive transmission mechanism and washing machine with same |
-
2015
- 2015-11-18 WO PCT/KR2015/012396 patent/WO2016080753A1/en active Application Filing
- 2015-11-18 CN CN201580061098.4A patent/CN107109757B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043153A (en) * | 2004-08-04 | 2006-02-16 | Nidec Shibaura Corp | Washing machine |
| KR20080092023A (en) * | 2007-04-10 | 2008-10-15 | 주식회사 아모텍 | Power transmission device for washing machine, driving device for washing machine and full automatic washing machine using the same |
| CN102212954A (en) * | 2010-04-09 | 2011-10-12 | 常州至精精机有限公司 | Differential linkage clutch device of washing machine |
| CN102877270A (en) * | 2012-10-22 | 2013-01-16 | 安徽聚隆传动科技股份有限公司 | Motor direct-drive transmission mechanism of washing machine |
| KR20140079257A (en) * | 2012-12-18 | 2014-06-26 | 주식회사 아모텍 | Driving apparatus and washing machine |
| KR20140079699A (en) * | 2012-12-18 | 2014-06-27 | 주식회사 아모텍 | Driving apparatus and washing machine |
| KR20140097956A (en) * | 2013-01-28 | 2014-08-07 | 주식회사 아모텍 | Outer rotor type motor and drum type washing machine having the same |
| CN104099754A (en) * | 2013-04-11 | 2014-10-15 | 安徽聚隆传动科技股份有限公司 | Washing machine motor direct-drive transmission mechanism and washing machine with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107109757A (en) | 2017-08-29 |
| WO2016080753A1 (en) | 2016-05-26 |
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