KR20140043259A - Motor and washing machine having the same - Google Patents

Motor and washing machine having the same Download PDF

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Publication number
KR20140043259A
KR20140043259A KR1020120106157A KR20120106157A KR20140043259A KR 20140043259 A KR20140043259 A KR 20140043259A KR 1020120106157 A KR1020120106157 A KR 1020120106157A KR 20120106157 A KR20120106157 A KR 20120106157A KR 20140043259 A KR20140043259 A KR 20140043259A
Authority
KR
South Korea
Prior art keywords
insulator
stator
motor
rotor
stator core
Prior art date
Application number
KR1020120106157A
Other languages
Korean (ko)
Inventor
방명배
정수권
정재웅
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR1020120106157A priority Critical patent/KR20140043259A/en
Publication of KR20140043259A publication Critical patent/KR20140043259A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Disclosed is an insulator strucutre, which prevents water from permeating to a connector with sufficient stiffness so that a magnetic flux concentration motor can resist a force increased by the concentrated magnet flux between a rotor and a stator. The insulator comprises an intensity reinforcing rib which protrudes in a certain height at the side surface along the circumference direction; and water penetration preventing ribs which are formed to be inclined at the tangential surface in the upper part around the connector.

Description

MOTOR AND WASHING MACHINE HAVING THE SAME

The present invention relates to a stator of a magnetic flux concentrated motor.

In general, a motor is a device for converting electrical energy into mechanical energy by having a fixed stator and a rotor that rotates by electromagnetically interacting with the stator.

The magnetic flux concentrated motor is a motor in which the rotor core and the permanent magnet are alternately arranged along the circumferential direction and the permanent magnet is magnetized in the circumferential direction so that the magnetic flux is concentrated. As a result, the magnetic flux concentration is structurally high, thus generating high torque and high power. It has the advantage that the motor can be miniaturized for the same output.

However, the rotor and the stator of the flux-intensive motor are increased in interaction by the concentrated magnetic flux, thereby receiving more radial force by the magnetic force. Therefore, the insulator surrounding and supporting the stator core must have sufficient rigidity to withstand this force.

On the other hand, the insulator is provided with a connector that can be connected to an external power source to supply current to the coil wound on the stator. Such a connector is provided to be exposed to the surface of the insulator in order to connect an external power source, so that moisture may penetrate into the connector.

One aspect of the present invention discloses a structure of an insulator that is rigidly reinforced to prevent deformation of the stator due to increased interaction of the rotor and the stator in the flux-focused motor.

One aspect of the present invention discloses a structure of an insulator that prevents moisture from penetrating into a connector exposed to the outside for supplying current to a coil wound on a stator.

According to the spirit of the present invention, a motor includes: a stator having a stator core and an insulator surrounding the stator core to insulate the stator core; And a rotor that electromagnetically interacts with and rotates the stator, wherein the insulator includes a connector for supplying current to the coil, and the insulator to prevent moisture from penetrating the side of the insulator. It includes a moisture permeation prevention rib protruding from the side of the.

Here, the moisture permeation prevention rib may induce the moisture to fall down the insulator.

In addition, the moisture permeation prevention rib may be formed to be inclined with respect to the virtual tangential surface in contact with the side of the insulator.

In addition, the insulator may be integrally formed.

In addition, the stator may be formed by inserting the stator core and injection molding the insulator.

In another aspect, in accordance with the teachings of the present invention, a motor includes a stator having a stator core and an insulator surrounding the stator core to insulate the stator core; And a rotor rotating electromagnetically in interaction with the stator, wherein the insulator includes a strength reinforcing rib protruding at a predetermined height along the circumferential direction from the side of the insulator to reinforce the strength.

Here, the insulator may be integrally formed.

In addition, the stator may be formed by inserting the stator core and injection molding the insulator.

According to the spirit of the present invention, deformation of the insulator of the stator by the magnetic force between the rotor and the stator can be prevented at a minimum cost.

In addition, it is possible to prevent the leakage of water by preventing the penetration of moisture into the connector to which the external power supply is connected.

1 is a view showing a washing machine having a motor according to an embodiment of the present invention.
2 is a view showing a coupling structure of a motor and a tub according to an embodiment of the present invention.
3 is a view illustrating a rotor of a motor according to an exemplary embodiment of the present invention, and omitting the molding part and showing only the rotor core and the magnet.
4 is a view showing a stator according to an embodiment of the present invention, omitting the insulator, and showing only the stator core.
5 is a perspective view of a stator according to an embodiment of the present invention.
6 is a front view showing a part of a stator according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail.

1 is a view showing a washing machine having a motor according to an embodiment of the present invention.

Referring to Figure 1, the structure of the washing machine 1 is provided with a motor 40 according to an embodiment of the present invention. However, although not separately described, the motor according to the embodiment of the present invention or the motor including the spirit of the present invention may be applied to various mechanical devices such as an electric vehicle or a small generator as well as a washing machine.

The washing machine 1 includes a cabinet 10 forming an exterior, a tub 20 disposed inside the cabinet 10 to store wash water, and a tub 20 rotatably disposed inside the tub 20 and laundry such as clothes. The drum 30 to be introduced and a motor 40 for driving the drum 30 are provided.

In the front portion of the cabinet 10, a charging port 11 is formed so that laundry can be charged into the drum 30. The input port (11) is opened and closed by a door (12) provided on a front portion of the cabinet (10).

A water supply pipe 50 for supplying wash water to the tub 20 is installed at an upper portion of the tub 20. One side of the water supply pipe 50 is connected to an external water supply source (not shown), and the other side of the water supply pipe 50 is connected to the detergent supply device 60. Detergent supply device 60 may be connected to the tub 20 through a connecting pipe (55). Water supplied through the water supply pipe 50 may be supplied into the tub 20 together with the detergent via the detergent supply device 60.

A drain pump 70 and a drain pipe 75 for discharging water in the tub 20 to the outside of the cabinet 10 are installed below the tub 20.

A plurality of through-holes 31 are formed around the drum 30 for distribution of the wash water, and a plurality of lifters are formed on the inner circumferential surface of the drum 30 so that the laundry can be raised and dropped when the drum 30 rotates. 32 is installed.

The drum 30 and the motor 40 may be connected through the drive shaft 80. The drive shaft 80 transmits the rotational force of the motor 40 to the drum 30. One end of the drive shaft 80 is connected to the drum 30, and the other end of the drive shaft 80 extends outward through the rear wall 21 of the tub 20.

The rear wall 21 of the tub 20 is provided with a bearing housing 82 to rotatably support the drive shaft 80. The bearing housing 82 may be made of an aluminum alloy, and may be inserted into the rear wall 21 of the tub 20 when the tub 20 is injection molded. Bearings 84 are installed between the bearing housing 82 and the drive shaft 80 so that the drive shaft 80 can rotate smoothly.

2 is a view showing a coupling structure of a motor and a tub according to an embodiment of the present invention. 3 is a view illustrating a rotor of a motor according to an exemplary embodiment of the present invention, and omitting a molding part and showing only the rotor core and the magnet. 4 is a view illustrating a stator according to an embodiment of the present invention, omitting an insulator and only a stator core, and FIG. 5 is a perspective view of a stator according to an embodiment of the present invention. 6 is a front view showing a part of the stator according to the embodiment of the present invention.

2 to 5, the motor 40 according to the embodiment of the present invention is disposed around the stator 100 and the stator 100 mounted on the rear wall 21 of the tub 20. And a rotor 200 which electromagnetically interacts with and rotates 100.

The motor 40 according to the embodiment of the present invention is an inner rotor type in which the rotor 200 is disposed inside the stator 100, but the spirit of the present invention is not limited thereto, and the rotor is disposed outside the stator. It is also applicable to the outer rotor type that is disposed.

As shown in FIGS. 2 to 3, the rotor 200 includes a plurality of metal rotor cores 220 forming magnetic paths and a plurality of magnets disposed between the rotor cores 220 to generate magnetic flux. And a molding part 230 supporting the plurality of rotor cores 220 and the plurality of magnets 300.

The rotor 200 may be formed by injecting the molding part 230 after inserting and inserting the plurality of rotor cores 220 and the plurality of magnets 300. A part of the rotor core 220 may be exposed to the outside by the molding unit 230, and the magnet 300 may not be exposed to the outside.

The rotor core 220 may support a magnet 300 while forming a magnetic path. The plurality of rotor cores 220 are arranged along the circumferential direction of the rotor 200, and the magnets 300 are arranged between the respective rotor cores 220. Thus, the rotor cores 220 and the magnets 300 are alternately arranged along the circumferential direction. The rotor core 220 may be formed by stacking a plate formed by pressing a silicon steel sheet.

The magnet 300 may include a ferrite or a rare earth such as neodymium or samarium, which may permanently maintain magnetic properties of high energy density. Each magnet 300 is magnetized along the circumferential direction. In addition, two magnets 300 adjacent to each other are magnetized so that the same polarities face each other.

Due to this structure, the magnetic flux generated in the magnet 300 can be concentrated, and since the torque of the motor is proportional to the linkage flux of the stator 100 and the rotor 200, the motor 40 generates high torque by the concentrated magnetic flux. You can.

The molding part 230 may include a shaft hole 231 to which the driving shaft 80 is coupled, and a heat dissipation port 232 for dissipating heat generated during the rotation of the rotor 200.

The stator 100 includes a circular stator body 101, a plurality of stator teeth 102 protruding into the stator body 101, and a coil 140 wound around the plurality of stator teeth 102. .

The stator body 101 supports a plurality of stator teeth 102. The plurality of stator teeth 102 protrude from the inner circumferential surface of the stator body 101 toward the center of the stator body 101, and are arranged at regular intervals in the circumferential direction of the stator body 101.

When a current is applied to the coils 140 wound on the plurality of stator teeth 102 and the polarities of the coils 140 are sequentially changed, a rotating magnetic flux is generated, and the rotating magnetic flux and the magnets 300 of the rotor 200 are generated. The magnetic flux formed by these can interact. Therefore, the rotor 200 may rotate by the repulsive force or the attraction force according to the polarity.

A support rib 23 for supporting the stator 100 may be formed on the rear wall 21 of the tub 20, and a plurality of fastening holes 22 may be formed in the support rib 23. The stator 100 includes a fixed rib 119 supported by contacting the support ribs 23 of the tub 20, and a fastening hole 113 provided at a position corresponding to the fastening hole 22 of the tub 20. Can be formed.

Accordingly, the fastening member S is fastened to the fastening hole 113 of the stator 100 and the fastening hole 22 of the tub 20, and the fixing rib 119 of the stator 100 is supported by the support rib of the tub 20. By being supported by 23, the stator 100 can be mounted to the tub 20.

On the other hand, the stator 100 is a metal stator core 130 forming a path of the magnetic flux, the insulator 110 covering the stator core 130 to insulate the stator core 130 and the coil 140 is It can be combined.

Referring to FIG. 4, the stator core 130 includes a core body 131 having a substantially annular shape, and a plurality of core teeth protruding in a direction toward the center of the core body 131 from an inner circumferential surface of the core body 131. 132). The stator core 130 may be formed by stacking a pressed steel plate.

Referring to FIG. 5, the insulator 110 includes an insulator body 111 having a substantially annular shape, and a plurality of insulator teeth 112 protruding from the inner circumferential surface of the insulator body 111 toward the center of the insulator body 111. Has The insulator tooth 112 is combined with the core tooth 132 to form a stator tooth 102 around which the coil 140 is wound.

The insulator 110 is formed with a connector 114 that is connected to an external power source to apply a current to the wound coil 140. A connection terminal (not shown) or the like may be connected to the connector 114. The shape of the connector 114 is not limited, and a structure in which a connection terminal or the like can be connected to connect an external power source is sufficient.

Meanwhile, the insulator 110 may include a first moisture penetration preventing rib 121 for preventing moisture from contacting the coil 140 wound around the insulator 110 in a radial direction and a moisture insulator ( A second moisture barrier rib 122 is provided to prevent penetration of the connector 114 onto the side 118 of the 110.

Due to the nature of the washing machine, the motor 40 mounted on the rear wall 21 of the tub 20 is always exposed to a humid environment and a short circuit risks when water penetrates the coil 140 and the connector 114 through which current flows. Because of this.

The first moisture barrier rib 121 may be formed to protrude to a predetermined height from the opposite surface 117 facing the tub 20 of the circular insulator body 111. The first moisture permeation prevention rib 121 is continuously formed along the circumferential direction, so that the water formed in the first moisture penetration prevention rib 121 flows through the first moisture penetration prevention rib 121 and falls to the bottom surface. Can be induced.

The second moisture barrier rib 122 may be formed to protrude from the side surface 118 of the insulator 110 around the connector 114. As shown in FIG. 6, the second moisture penetration prevention rib 122 may induce moisture flowing through the side surface 118 of the insulator 110 to fall to the bottom surface by its own weight.

The second moisture barrier rib 122 protrudes from the side surface of the insulator 110 at the upper portion of the connector 114 and is predetermined with respect to a virtual tangential surface P that is in contact with the side surface 118 of the insulator 110. It may be inclined at an angle θ.

In addition, the second moisture permeation prevention rib 122 is formed to have a slope that descends toward the end of the insulator 110 toward its end so that moisture does not accumulate between the side 118 of the insulator 110 and the second moisture penetration prevention rib 122. It would be desirable.

Meanwhile, the insulator 110 may further include a strength reinforcing rib 123 protruding to a predetermined height from the side surface 118 to reinforce the strength of the insulator 110. Strength reinforcing rib 123 may be formed along the circumferential direction. If greater strength is required, the strength reinforcing rib 123 may be provided in plural on the side of the insulator 110.

In a magnetic flux concentrated motor such as a motor according to an exemplary embodiment of the present invention, a radial force by the magnetic force acts greatly on the stator 100 by the concentrated magnetic flux. In response to this, the insulator 110 surrounding the stator core 130 needs to secure sufficient rigidity. The strength reinforcing rib 123 of the motor according to the embodiment of the present invention can be implemented at low cost.

The insulator 110 may be formed of a material having electrical insulation to insulate the stator core 130 from the coil 140. In addition, the insulator 110 may be integrally formed including the first moisture penetration prevention rib 121, the second moisture penetration prevention rib 122, and the strength reinforcing rib 123.

The stator 100 may be formed by injection molding the insulator 110 after inserting the stator core 130. By insert injection molding the stator 100 as described above, the rigidity of the insulator 110 and the stator 100 may be further increased.

Although the technical idea of the present invention has been described above with reference to specific embodiments, the scope of rights of the present invention is not limited to these embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

1: Washing machine 10: Cabinet
11: inlet 12: door
20: Tub 21: Tub rear wall
22: fastening hole 23: support rib
30: drum 40: motor
50: water supply pipe 55: connector
60: detergent supply device 70: drainage pump
75: drain pipe 80: drive shaft
82: bearing housing 84: bearing
100: stator 101: stator body
102: Stator Tees 110: Insulator
111: Insulator Body 112: Insulator Teeth
113: fastening hole 114: connector
117: surface opposite the tub 118: side
119: fixed rib 121: first moisture penetration prevention rib
122: second moisture penetration prevention rib 123: strength reinforcing rib
130: stator core 131: core body
132: core tooth 140: coil
200: rotor 220: rotor core
230: molding part 231: shaft work
232: heat outlet 300: magnet
P: tangent plane θ: predetermined angle

Claims (8)

A stator having a stator core and an insulator surrounding the stator core to insulate the stator core; And
A rotor which electromagnetically interacts with the stator to rotate; Lt; / RTI >
The insulator includes a connector for supplying current to the coil, and a moisture penetration preventing rib protruding from the side of the insulator to prevent moisture from penetrating the side of the insulator. The method according to claim 1,
And the moisture penetration preventing rib induces the moisture to fall below the insulator. The method according to claim 1,
The water permeation prevention rib is formed to be inclined with respect to the virtual tangential surface in contact with the side of the insulator. The method according to claim 1,
The insulator is characterized in that the motor is formed integrally. The method according to claim 1,
The stator is formed by inserting the stator core and injection molding the insulator. A stator having a stator core and an insulator surrounding the stator core to insulate the stator core; And
A rotor which electromagnetically interacts with the stator to rotate; Lt; / RTI >
The insulator includes a strength reinforcing rib protruding to a predetermined height along the circumferential direction from the side of the insulator to reinforce the strength. The method according to claim 6,
The insulator is characterized in that the motor is formed integrally. The method according to claim 6,
The stator is formed by inserting the stator core and injection molding the insulator.
KR1020120106157A 2012-09-24 2012-09-24 Motor and washing machine having the same KR20140043259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120106157A KR20140043259A (en) 2012-09-24 2012-09-24 Motor and washing machine having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120106157A KR20140043259A (en) 2012-09-24 2012-09-24 Motor and washing machine having the same

Publications (1)

Publication Number Publication Date
KR20140043259A true KR20140043259A (en) 2014-04-09

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Application Number Title Priority Date Filing Date
KR1020120106157A KR20140043259A (en) 2012-09-24 2012-09-24 Motor and washing machine having the same

Country Status (1)

Country Link
KR (1) KR20140043259A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101521941B1 (en) * 2013-09-02 2015-05-20 김태상 Rotor for flat type motor and flat type motor comprising the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101521941B1 (en) * 2013-09-02 2015-05-20 김태상 Rotor for flat type motor and flat type motor comprising the same

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