KR100651296B1 - Coupling structure and method of the permanent magnet of a motor - Google Patents

Coupling structure and method of the permanent magnet of a motor Download PDF

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Publication number
KR100651296B1
KR100651296B1 KR1020050071216A KR20050071216A KR100651296B1 KR 100651296 B1 KR100651296 B1 KR 100651296B1 KR 1020050071216 A KR1020050071216 A KR 1020050071216A KR 20050071216 A KR20050071216 A KR 20050071216A KR 100651296 B1 KR100651296 B1 KR 100651296B1
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KR
South Korea
Prior art keywords
permanent magnet
rotor frame
rotor
tape
motor
Prior art date
Application number
KR1020050071216A
Other languages
Korean (ko)
Inventor
민병욱
전차승
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020050071216A priority Critical patent/KR100651296B1/en
Priority claimed from EP20060016245 external-priority patent/EP1750350A2/en
Application granted granted Critical
Publication of KR100651296B1 publication Critical patent/KR100651296B1/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/27Rotor cores with permanent magnets
    • H02K1/2786Outer rotor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/32Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft

Abstract

A connection structure of a permanent magnet of a motor and a method thereof are provided to reduce fabrication costs, by improving workability of the connection structure, by attaching the permanent magnet to a rotor frame using a tape simply. A connection structure of a permanent magnet(30) of a motor includes a stator. A rotor comprises a rotor frame(21) and a permanent magnet, and rotates against the stator. A tape(41) attaches the permanent magnet to the rotor frame, and has sticking adhesive force at least one plane. The permanent magnet is attached to the one side of the tape, and the rotor frame is attached to another side of the rotor frame.

Description

Coupling structure and method of the permanent magnet of a motor}

1 is an exploded perspective view showing the structure of a motor according to the spirit of the present invention.

2 is a view showing a state in which a permanent magnet is attached to the rotor frame according to the first embodiment of the present invention.

3 is a view showing a state in which a permanent magnet is attached to a rotor frame according to a second embodiment of the present invention.

4 is a view showing a state in which a permanent magnet is attached to the rotor frame according to a third embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

10: stator 20: rotor 21: rotor frame

30 permanent magnet 41 double-sided tape 42 one-sided tape

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor, and more particularly, to a coupling structure and method of a permanent magnet of a motor to allow a permanent magnet to be attached to a rotor frame by a tape.

A motor is a device that converts electrical energy into mechanical energy and drives other articles. The motor includes a stator fixed to a predetermined article and a rotor that rotates relative to the stator, and the rotor includes a rotor frame made of a magnetic material such as a metallic material.

In the conventional motor, an adhesive is applied to the adhesive surface of the permanent magnet to couple the permanent magnet to the frame, and the adhesive surface is bonded to the inner surface of the frame to be coupled to each other.

However, when the permanent magnet is bonded to the frame using the adhesive as described above, since the adhesive must be applied to the permanent magnet in several places, the workability is reduced, and the manufacturing cost increases.

In addition, a large magnetic gap is generated between the permanent magnet and the frame by the adhesive, which causes a problem that the motor performance is degraded due to the reduction of the magnetic flux.

In addition, the magnetic gap (gap) is easy to change according to the adhesive dosage and the adhesive force, the failure rate such as permanent magnet departure after magnetization increases, thereby causing problems that are not effective in terms of performance management.

The present invention is proposed to solve the problems as described above, it is an object of the present invention to propose a coupling structure and method of a permanent magnet of the motor by improving the workability, the manufacturing cost is reduced.

In addition, it is an object of the present invention to propose a coupling structure and method of a permanent magnet of the motor to maintain a constant and at the same time the magnetic gap between the permanent magnet and the rotor frame is reduced.

The coupling structure of the permanent magnet of the motor according to the present invention for achieving the object as described above is a stator; A rotor having a rotor frame and a permanent magnet, the rotor being rotated with respect to the stator; And a tape having an adhesive force on at least one surface thereof so as to attach the permanent magnet to the rotor frame.

According to another aspect of the present invention, a method of coupling a permanent magnet of a motor includes: providing a rotor frame, a rotor having a permanent magnet, and a tape having adhesive force on at least one surface thereof; And attaching the permanent magnet to the rotor frame using the tape.

By the coupling structure and method of the permanent magnet of the motor as proposed, it is possible to simply attach the permanent magnet to the rotor frame with a tape, thereby improving workability and reducing manufacturing cost and time.

In addition, the thickness is constant, and the permanent magnet is attached to the rotor frame by a thin tape, which not only reduces the magnetic gap between the permanent magnet and the rotor frame but also maintains a constant magnetic gap, thereby improving motor performance. It is effective.

In addition, the permanent magnet can be firmly attached to the rotor frame by the tape, thereby preventing separation after permanent magnetization of the permanent magnet and reducing the defective rate.

Hereinafter, with reference to the drawings will be described a specific embodiment of the present invention. However, the spirit of the present invention is not limited to the embodiments presented, and those skilled in the art who understand the spirit of the present invention can easily suggest other embodiments falling within the scope of the same idea, but this is also the scope of the present invention. Of course it belongs.

Here, the motor according to the present invention has been presented an abduction type in which the rotor is rotated outside of the stator, which is illustrative, and it is understood that the electric shock type is included in the scope of the present invention.

1 is an exploded perspective view showing the structure of a motor according to the spirit of the present invention.

Referring to FIG. 1, the motor 1 according to the present invention includes a stator 10, a rotor 20 performing a rotational movement with respect to the stator 10, and a permanent unit installed in the rotor 20. A magnet 30 is included.

In detail, the stator 10 has a structure in which magnetic materials having a thickness of about 1 mm or less are stacked. The number of stacked layers of the magnetic body may be determined according to the output required for the motor 1.

The stator 10 includes a cylindrical yoke 11 and a plurality of wound portions 12 protruding from the yoke 11.

In more detail, the wound portion 12 protrudes with a predetermined length about the cylindrical yoke 11 to form a radial shape. The coil 13 is wound around the wound portion 12 a predetermined number of times. Here, the number of the wound portion 12 is preferably determined in a range in which the motor 1 can be smoothly rotated according to the phases and the poles.

On the other hand, the rotor 20 is a part that is rotated outside the stator 10, the electrical energy applied to the motor 10 by the rotation of the rotor 20 can be converted into mechanical energy. .

In addition, the rotor 20 includes a rotor frame 21. In detail, the rotor frame 21 is made of a magnetic material such as a metallic material. In addition, a seating portion 22 on which the permanent magnet 30 is mounted is formed on the inner surface portion of the rotor frame 21 to have a size corresponding to that of the permanent magnet 30.

In addition, a plurality of blades 23 are radially formed on the inner bottom surface of the rotor 20. The blade 23 forms an air flow at the time of rotation of the rotor 20 to cool and release heat generated from the coil 13 to the outside. The blade 23 may be formed by cutting and bending the bottom surface of the rotor frame 21 to a predetermined size. When the wing 23 is formed as described above, the groove 24 is formed on the cut surface thereof, so that air flow is possible, and thus the heat dissipation function can be performed together with the wing 23.

In addition, a shaft insertion hole 25 into which a rotating shaft (not shown) may be inserted is formed at the center of the rotor 20. In addition, a plurality of ribs 26 for reinforcing strength are radially formed on the bottom of the rotor 20.

On the other hand, the permanent magnet 30 rotates the rotor 20 in response to the magnet generated from the coil 13 is applied power. In addition, the permanent magnet 30 is continuously made as a whole. That is, the permanent magnet 30 is not a structure in which a plurality of element magnets are collected, but is formed of one single magnet to form a continuous strip shape and longer than the width. Then, it is suitable to be seated on the seating portion 22 of the rotor 20.

In addition, the permanent magnet 30 is manufactured including a rare earth metal. Since the rare earth metal is a ferromagnetic material having a high magnetic force, the permanent magnet 30 may have a predetermined magnetic force even if it is mixed with rubber or the like. The permanent magnet 30 manufactured as described above has a ductility and can be easily deformed. Therefore, the handling thereof is easy and can be easily deformed into a shape suitable for being seated on the seating portion 22.

2 is a view showing a state in which a permanent magnet is attached to the rotor frame according to the first embodiment of the present invention.

Referring to FIG. 2, the permanent magnet 30 according to the present invention is seated on a seating portion 22 formed on an inner surface portion of the rotor frame 21, and the rotor frame may be formed by the double-sided tape 41. 21).

In detail, the double-sided tape 41 has adhesive strength on both sides thereof, and its thickness is several to several tens of micrometers (μm). That is, the thickness of the double-sided tape 41 is formed to be thinner than the gap (gap) between the permanent magnet 30 and the portion facing the permanent magnet 30 of the stator 10, the permanent magnet 30 ) And smaller than the thickness of the rotor frame 21. Therefore, the magnetic gap between the permanent magnet 30 and the rotor frame 21 can be reduced.

In addition, the double-sided tape 41 has a greater adhesive force than the maximum attraction force acting between the stator 10 and the rotor 20 when the motor 1 operates.

In order to adhere the permanent magnet 30 to the rotor frame 21 by the above-described configuration, first, the rotor frame 21, the permanent magnet 30, and the double-sided tape 41 are provided. In this case, the permanent magnet 30 includes a rare earth-based metal as described above, and is mixed with rubber or the like to produce a continuous strip shape.

Next, the double-sided tape 41 is attached to the outer circumferential surface of the permanent magnet 30, that is, the surface facing the rotor frame 21. Here, the width of the double-sided tape 41 is preferably a size corresponding to the width of the permanent magnet 30. Then, the permanent magnet 30 is attached to the seating portion 22 of the rotor frame 21, that is, the inner surface of the rotor frame 21. Here, the permanent magnet is attached to the rotor frame 21 without attaching the double-sided tape 41 to the permanent magnet 30, and the permanent magnet is attached to the rotor frame 21. 30 may be attached to the rotor frame 21. In addition, double-sided tape 41 may be attached to the permanent magnet 30 and the rotor frame 21, respectively.

Therefore, by simply attaching the permanent magnet 30 to the rotor frame 21 using the double-sided tape 41, the workability is improved, manufacturing cost is reduced.

In addition, the magnetic gap formed between the permanent magnet 30 and the rotor frame 21 is reduced by the thickness of the double-sided tape 41, the double-sided tape on the outer surface of the permanent magnet 30 By attaching the 41, the magnetic gap between the permanent magnet 30 and the rotor frame 21 can be kept constant, so that the performance of the motor 1 is improved.

3 is a view showing a state in which the permanent magnet is attached to the rotor frame according to a second embodiment of the present invention.

Referring to FIG. 3, the permanent magnet 30 and the rotor frame 21 are attached together to one surface of the one-side tape 42 in a state where the permanent magnet 30 is seated on the rotor frame 21. It features.

In detail, the one-sided tape 42 has an adhesive force on only one side, unlike the double-sided tape 41. In addition, the width of the one-side tape 42 is formed larger than the width of the permanent magnet 30 so that the permanent magnet 30 and the rotor frame 21 adhere together.

In order to attach the permanent magnet 30 to the rotor frame 21 by the above-described configuration, first, the permanent magnet 30 is seated on the seating part 22 of the rotor frame 21. Then, the permanent magnet 30 is surrounded by the cohesive side of the one-side tape 42. Then, the one-side tape 42 surrounds the permanent magnet 30 and a predetermined portion of the rotor frame 42 together, so that the permanent magnet 30 is attached to the rotor frame 21.

According to the present embodiment, the adhesive material does not exist between the permanent magnet 30 and the rotor frame 21, so that a magnetic material formed between the permanent magnet 30 and the rotor frame 21 is not present. The gap is significantly reduced.

In addition, by attaching the permanent magnet 30 and the rotor frame 21 together to the cohesive surface of the one-side tape 42 in a state in which the permanent magnet 30 is seated on the seating portion 22, workability There is an advantage that it is improved and manufacturing time and cost are reduced.

4 is a view showing a state in which a permanent magnet is attached to the rotor frame according to a third embodiment of the present invention.

Referring to FIG. 4, the permanent magnet 30 is attached to the rotor frame 21 by a double-sided tape 41, and is again surrounded by the one-side tape 42 and adhered together with the rotor frame 21. It is characterized by.

In order to attach the permanent magnet 30 to the rotor frame 21 by the above-described configuration, first, the double-sided tape 41 is attached to the outer surface of the permanent magnet 30 and / or the inner surface of the rotor frame 21. After attaching the permanent magnet 30 to the rotor frame (21). Next, the double-sided tape 41 of the permanent magnet 30 is attached to the cohesive side of the one-side tape 42 in a state where the permanent magnet 30 is attached to the rotor frame 21. Surround the other side of the face. Then, the permanent magnet 30 and the rotor frame 21 are attached to one side of the one-side tape 42.

According to this embodiment, the permanent magnet 30 is firmly attached to the rotor frame 21, there is an advantage that the permanent magnet 30 is prevented from detaching after magnetization.

By the coupling structure and method of the permanent magnet of the motor according to the present invention configured as described above, it is possible to easily attach the permanent magnet to the rotor frame with a tape, thereby improving workability, reducing manufacturing cost and time It is effective.

In addition, the thickness is constant, and the permanent magnet is attached to the rotor frame by a thin tape, thereby reducing the magnetic gap between the permanent magnet and the rotor frame, thereby increasing the magnetic flux as well as keeping the magnetic gap constant. The performance is improved.

In addition, the permanent magnet can be firmly attached to the rotor frame by the tape, thereby preventing the permanent magnet from being separated after magnetization and reducing the defective rate.

Claims (8)

  1. Stator;
    A rotor having a rotor frame and a permanent magnet, the rotor being rotated with respect to the stator; And
    And a tape having an adhesive force on at least one surface thereof so that the permanent magnet can be attached to the rotor frame.
  2. The method of claim 1,
    Permanent magnet is attached to one side of the tape, the rotor frame is coupled structure of the motor, characterized in that the rotor frame is attached to the other side.
  3. The method of claim 1,
    The permanent magnet coupling structure of the motor, characterized in that the permanent magnet and the rotor frame are attached together on one side of the tape.
  4. The method of claim 1,
    The thickness of the tape is a coupling structure of a permanent magnet of the motor, characterized in that formed by a predetermined size thinner than the distance between the permanent magnet and the portion of the stator facing the permanent magnet.
  5. A rotor having a rotor frame and a permanent magnet,
    Providing a tape having adhesive force on at least one surface; And
    And attaching the permanent magnet to the rotor frame using the tape.
  6. The method of claim 5,
    Attaching the permanent magnet,
    Attaching the tape to at least one of the permanent magnet and the rotor frame;
    And attaching the rotor frame and the rotor frame to each other with the tape attached thereto.
  7. The method of claim 6,
    And attaching the permanent magnet and the rotor frame together to one side of the tape.
  8. The method of claim 5,
    Attaching the permanent magnet,
    Mounting the permanent magnet to the rotor frame;
    And attaching the permanent magnet and the rotor frame together to one side of the tape.
KR1020050071216A 2005-08-04 2005-08-04 Coupling structure and method of the permanent magnet of a motor KR100651296B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050071216A KR100651296B1 (en) 2005-08-04 2005-08-04 Coupling structure and method of the permanent magnet of a motor

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR1020050071216A KR100651296B1 (en) 2005-08-04 2005-08-04 Coupling structure and method of the permanent magnet of a motor
EP20060016245 EP1750350A2 (en) 2005-08-04 2006-08-03 Motor with single bent permanent magnet and its method of manufacture
AU2006203333A AU2006203333A1 (en) 2005-08-04 2006-08-03 Motor and Motor Manufacturing Method
US11/498,778 US20070035192A1 (en) 2005-08-04 2006-08-04 Motor and motor manufacturing method
CN 200610108457 CN1909332A (en) 2005-08-04 2006-08-04 Motor and motor manufacturing method
JP2006213731A JP2007043900A (en) 2005-08-04 2006-08-04 Manufacturing method of motor, and motor

Publications (1)

Publication Number Publication Date
KR100651296B1 true KR100651296B1 (en) 2006-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050071216A KR100651296B1 (en) 2005-08-04 2005-08-04 Coupling structure and method of the permanent magnet of a motor

Country Status (2)

Country Link
KR (1) KR100651296B1 (en)
CN (1) CN1909332A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016208692A1 (en) * 2016-05-20 2017-11-23 Zf Friedrichshafen Ag Rotor of an electric machine with a laminated core

Also Published As

Publication number Publication date
CN1909332A (en) 2007-02-07

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