KR20170077930A - Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly - Google Patents

Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly Download PDF

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Publication number
KR20170077930A
KR20170077930A KR1020150187657A KR20150187657A KR20170077930A KR 20170077930 A KR20170077930 A KR 20170077930A KR 1020150187657 A KR1020150187657 A KR 1020150187657A KR 20150187657 A KR20150187657 A KR 20150187657A KR 20170077930 A KR20170077930 A KR 20170077930A
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KR
South Korea
Prior art keywords
rotor core
core assembly
magnet
adhesive
assembly group
Prior art date
Application number
KR1020150187657A
Other languages
Korean (ko)
Inventor
김정철
이광호
정민수
Original Assignee
계양전기 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 계양전기 주식회사 filed Critical 계양전기 주식회사
Priority to KR1020150187657A priority Critical patent/KR20170077930A/en
Publication of KR20170077930A publication Critical patent/KR20170077930A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The present invention improves the opening of the lower part to which the magnet is attached so as to prevent the adhesive applied to adhere to the magnet from flowing out through the lower part. The through hole for embedding the magnet and the motor shaft penetrate A rotor core assembly group in which a rotor core having a coupling hole formed therein is laminated; An adhesive which is applied in the embedding hole of the rotor core assembly group in which the through holes are unified into a single lamination of the rotor cores; A magnet fixedly attached to the adhesive in an inserted form in the embedding hole; And a finishing rotor core disposed at a lower portion of the rotor core assembly group and engaged with the motor shaft in a state of blocking the lower opening of the embedding hole so that the adhesive does not flow down from the lower end of the embedding hole. A core assembly is provided, and a method of assembling a rotor core assembly with a magnet is provided.

Description

Technical Field [0001] The present invention relates to a rotor core assembly for a motor having a magnet and a method of assembling the rotor core assembly having the magnet,

The present invention relates to a rotor core assembly for a motor having a magnet and a method of assembling the rotor core assembly having the magnet, more specifically, to a type that prevents the opening of the lower portion to which the magnet is attached, So that the adhesive does not flow out through the lower part.

1A to 1C, a rotor core assembly 1 for a motor having a magnet according to the related art includes a through hole 3 for burying the magnet 2 and a motor shaft 4 A rotor core assembly group 7 having a structure in which a rotor core 6 having a coupling hole 5 for coupling the rotor core 6 to the rotor core 6 is laminated, a magnet 2 embedded in the rotor core assembly group 7, And a motor shaft (4) coupled to the rotor core assembly group (7).

1C, a rotor core assembly group 7 in which a plurality of single rotor rotor cores 6 are laminated is referred to as a motor (not shown) (12) of applying an adhesive (9) to the inner surface of the embedding hole (8) integrally formed through the lamination of the rotor core (6) after the step (11) A step (13) of pushing the magnet (2) into the inside of the embedding hole (8) after the step (12) and completing the embedding and fixing of the magnet (2) (14) wiping with a non-woven fabric to remove the adhesive (9) flowing out through the lower end of the nonwoven fabric (8); And a step (15) of washing to remove the remaining adhesive (9) after the step (14).

In the rotor core assembly 1, when the magnet 2 is pushed in the lower end direction from the upper end of the embedding hole 8, the magnet 2 is scraped off with the applied adhesive 9 There is a problem that the adhesive 9 applied on the inner surface of the embedding hole 8 flows out through the lower end of the embedding hole 8. [ Accordingly, there is a problem in that it is difficult to improve the efficiency of the work and the productivity because the adhesive 9 which has been spilled out of the nonwoven fabric is wiped off and the cleaning work is carried out.

When the adhesive 9 adhered to the nonwoven fabric is applied to the surface of the motor shaft 4 or flows down along the motor shaft 4 in the course of wiping off the adhesive 9 leaked as described above, The rotation of the motor shaft 4 can not be smoothly performed due to the adhesive fixing force of the motor. As a result, the performance and quality of the motor deteriorate.

In order to solve the above problem, as shown in FIG. 2, an adhesive 9 (hereinafter, referred to as an adhesive) 9, which is connected to the motor shaft 4 exposed in a direction in which the adhesive 9 flows out, In this case, since the engaging operation and the separating operation between the marking jig 10 and the motor shaft 4 must be repeatedly performed each time, there is a problem that the operation is troublesome .

When the adhesive 9 is applied to the marking jig 10, a cleaning time for the marking jig 10 is required. In addition, the marking jig 10 is required to be separately cleaned There was a problem as well.

As shown in FIGS. 3A to 3C, a rotor core assembly 16 for a motor, which generally includes magnets, will be described. First, a structure in which a motor shaft 4 passes through a rotor core assembly group 17 And an adhesive 9 such as a bond is applied to the outer surface of the rotor core assembly group 17 and then the magnet 2 is attached and fixed to the adhesive 9.

A method of assembling a rotor core assembly for a motor having a general magnet having the above structure will now be described with reference to FIG. 3C. Step 18 of coupling the rotor core assembly group 17 to the motor shaft 4 A step (19) of applying an adhesive (9) to an outer surface of the rotor core assembly group (17) after the step (18), and a step (19) of attaching the magnet (2) A step (20) of wiping the adhesive (9) out through the lower end of the rotor core assembly group (17) after the step (20) with a nonwoven fabric (21); And a step (22) of performing cleaning to remove the remaining adhesive (9) after the step (21).

However, in order to remove the adhesive 9 flowing out from the rotor core assembly 16, it is necessary to wipe off the adhesive 9 that has flowed out to the nonwoven fabric and to perform a cleaning operation, .

When the adhesive 9 adhered to the nonwoven fabric is worn on the surface of the motor shaft 4 or flows down along the motor shaft 4 in the course of wiping off the leaked adhesive 9 with the nonwoven fabric, So that the motor shaft 4 is not smoothly rotated. As a result, the performance and quality of the motor deteriorate.

Meanwhile, in order to solve the problem occurring in the motor rotor core assembly 16 having the magnet in general, as shown in FIG. 4, the motor shaft 4 exposed to the direction in which the adhesive 9 flows out There is a method in which the marking jig 23 is put on the motor shaft 4 so as to cover the motor shaft 4 so that the adhesive 9 is not applied to the motor shaft 4. In this case, There has been a problem in that it is repeatedly incurred during the work because the work has to be performed each time.

In addition, when the adhesive 9 is applied to the marking jig 23, a cleaning time for the marking jig 23 is required. In addition to this, the marking jig 23 is produced separately, There was a problem as well.

SUMMARY OF THE INVENTION The present invention has been developed to solve the above problems, and it is an object of the present invention to improve a type that prevents opening of a lower portion to which a magnet is attached so that the applied adhesive does not flow out to attach the magnet, The present invention provides a rotor core assembly for a motor and a method of assembling a rotor core assembly having the magnet, which do not require the use of a marking jig for preventing an adhesive from being applied to the motor shaft have.

According to an aspect of the present invention, there is provided a rotor core assembly including a plurality of rotor cores stacked on a rotor core, the rotor cores each having an engaging hole formed therein so as to engage with a through hole for embedding the magnet and a motor shaft; An adhesive which is applied in the embedding hole of the rotor core assembly group in which the through holes are unified into a single lamination of the rotor cores; A magnet fixedly attached to the adhesive in an inserted form in the embedding hole; And a finishing rotor core disposed at a lower portion of the rotor core assembly group and engaged with the motor shaft in a state of blocking the lower opening of the embedding hole so that the adhesive does not flow down from the lower end of the embedding hole. A core assembly is provided.

There is also provided a rotor core assembly for a motor having a magnet having coupling means for coupling between a dead rotor core and a rotor core disposed at the lower end of the rotor core assembly group.

In addition, the coupling means is provided with a magnet for a motor, the magnet comprising a coupling hole formed in the finishing rotor core and a coupling protrusion formed in the rotor core.

Further, the present invention provides a method of manufacturing a rotor core assembly, Closing the lower opening of the embedding hole in a state where the finishing rotor core is coupled to the motor shaft at the lower end of the rotor core assembly group so that the embedding hole of the rotor core assembly group in which the magnets are embedded is not opened downward; Applying an adhesive to the inner surface of the embedding hole of the rotor core assembly group to fix the magnets thereto; And pushing the magnet into the inside of the buried hole to attach and fix the magnet.

A rotor core assembly group which is coupled and fixed by a coupling structure through which a motor shaft passes, and a rotor core is laminated; An adhesive applied to an outer surface of the rotor core assembly group; A magnet fixedly attached to the adhesive; And a finishing rotor core coupled to the motor shaft with a structure in which the rotor core assembly group to which the magnets are attached is disposed so as not to open downward to prevent the adhesive from flowing out to the lower end of the rotor core assembly group. And a rotor core assembly for a motor.

Further, the present invention provides a method of manufacturing a rotor core assembly, Closing the lower opening of the rotor core assembly group in a state where the finishing rotor core is coupled to the motor shaft at the lower end of the rotor core assembly group so that the rotor core assembly group to which the magnets are attached is not opened in the downward direction; Applying an adhesive to the outside surface of the rotor core assembly group for fixing the magnet to the magnet; And attaching the magnet to the adhesive. The method of assembling the rotor core assembly is provided with a magnet.

As described above, according to the rotor core assembly and the rotor core assembly assembly method for a motor having the magnet according to the present invention, it is possible to prevent the adhesive from flowing out in the lower direction of the rotor core assembly group, And an effect that does not require washing performance can be expected.

 In addition, since it is not necessary to use a marking jig used to prevent the adhesive from adhering to the motor shaft, it is possible to expect an effect of improving work efficiency and productivity.

In addition, since the adhesive does not adhere to the surface of the motor shaft or flow along the motor shaft as described above, smooth rotation of the motor shaft is maintained, and the effect of preventing deterioration of the performance and quality of the motor can be expected.

1A to 1C are cross-sectional views schematically showing a rotor core assembly for a motor having a general magnet, wherein FIG. 1A is a separated view, FIG. 1B is a combined view, and FIG. It is a flowchart.
Fig. 2 is a view showing the use of the marking jig in Fig. 1b.
FIGS. 3A to 3C are cross-sectional views schematically showing a rotor core assembly for a motor having a general magnet, in which FIG. 3A is a separated view, FIG. 3B is a combined view, and FIG. It is a flowchart.
FIG. 4 is a view showing the use of the marking jig in FIG. 3b.
FIGS. 5A to 5C are cross-sectional views schematically showing a rotor core assembly for a motor having a magnet according to the present invention and a method of assembling a core assembly having a magnet, wherein FIG. 5A is a separated view, And Fig. 5C is a flowchart showing an assembling method.
6A to 6C are cross-sectional views schematically showing a rotor core assembly for a motor having a magnet and a method of assembling the core assembly according to another embodiment of the present invention, in which FIG. 6A is a separated view, And FIG. 6C is a flowchart showing an assembling method.

Hereinafter, preferred embodiments of a rotor core assembly for a motor having a magnet according to the present invention and a method of assembling a core assembly having a magnet according to the present invention will be described in detail with reference to the accompanying drawings. Although the present invention is described in detail below with reference to the accompanying drawings, the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 5A to 5C, the rotor core assembly 30 for a motor according to the present invention has a structure in which a through hole 34 for burying the magnet 32 and a motor shaft 36 A rotor core assembly group 42 in which a rotor core 40 in which a coupling hole 38 is formed is laminated, a magnet 32 which is fixedly embedded in the rotor core assembly group 42, And a finishing rotor core 46 for blocking the embedding hole 48 through which the adhesive 44 flows out when the magnet 32 is embedded in the motor shaft 36.

Specifically, the rotor core 40 is formed with a coupling hole 38 so that the rotor shaft 40 can be coupled with a structure in which the motor shaft 36 passes therethrough. At a position spaced from the coupling hole 38 in the radial direction, A through hole 34 for embedding the magnet 32 is formed.

In other words, the rotor core assembly group 42 having the above structure is coupled to the motor shaft 36, and is embedded in the unified bore 48 through the through-hole 34 of the rotor core 40, 32 are accommodated. In addition, an adhesive 44 such as a bond is used for fixing the magnet 32.

The rotor core 40 is disposed at the lowermost end of the rotor core assembly group 42 so that the adhesive 44 for fixing the magnet 32 when the magnet 32 is embedded does not flow out from the embedding hole 48 And the bottom of the embedding hole 48 is closed by engaging with the finishing rotor core 46 which blocks the embedding hole 48. [

A coupling means 50 is provided at a coupling position of the finishing rotor core 46 and the corresponding rotor core 40 for coupling between the finishing rotor core 46 and the corresponding rotor core 40. The coupling means 50 is preferably a structure of a coupling protrusion 52 and a coupling hole 54. For example, a coupling hole 54 is formed in the finishing rotor core 46, 40 may be formed with coupling protrusions 52 to be coupled to each other.

However, as described above, the coupling means 50 need not be limited to the coupling structure such as the coupling hole 54 and the coupling protrusion 52, and if the finishing rotor core 46 can be fixedly coupled in a rigid state, Any coupling structure is acceptable.

Referring to FIG. 5C, a method of assembling a rotor core assembly having the structure as described above includes the step (60) of coupling a motor shaft (36) to a coupling hole (38) of a rotor core assembly group (42); After the step (60), the rotor core assembly group 42 in which the magnets 32 are embedded is installed in the lower end of the rotor core assembly group 42 so that the embedding holes 48 of the rotor core assembly group 42 are not opened in the downward direction. Blocking the lower opening of the embedding hole (48) with a structure that engages the motor shaft (36); A step (64) of applying an adhesive (44) to the inner surface of the embedding hole (48) of the rotor core assembly group (42) after the step (62) for fixing the magnet (32) And a step (66) of pushing the magnet (32) into the interior of the embedding hole (48) after the step (64).

When the magnet 32 is pushed in the lower end direction from the upper end of the embedding hole 48, the magnet 32 scrapes the adhesive 44 applied to the inner surface of the embedding hole 48 The adhesive 44 is gathered as it flows down to the lower end of the embedding hole 48. At this time, the coupling of the finishing rotor core 46, which prevents the lower opening of the embedding hole 48 as described above, Even if the adhesive 44 flows down to the lower end of the embedding hole 48, the adhesive 44 does not flow out from the lower end of the embedding hole 48.

6A to 6C, the rotor core assembly 70 for a motor according to the present invention includes a rotor core assembly group 74 to which a motor shaft 72 is inserted and fixed, An adhesive 76 applied to the outer surface of the assembly group 74, a magnet 78 attached and fixed to the adhesive 76, and the adhesive 76 are prevented from flowing out to the lower end of the rotor core assembly group 74 And a finishing rotor core (80) coupled to the motor shaft (72) in a structure disposed below the rotor core assembly group (74). The rotor core assembly group 74 is formed with a coupling hole 82 for coupling the motor shaft 72 therethrough. The rotor core assembly group 74 has a structure in which the rotor core 84 is laminated. In addition, the radial length of the finishing rotor core 80 is longer than the outer periphery of the rotor core 84.

A method of assembling a rotor core assembly having the above structure includes the steps of (90) coupling a motor shaft (4) to a coupling hole (82) of a rotor core assembly group (74); After the step 90, the rotor core assembly group 74 to which the magnet 78 is attached is coupled to the lower end of the rotor core assembly group 74 so that the rotor core assembly group 74 is not opened downward, (92) preventing the lower opening of the second chamber (74); A step (94) of applying an adhesive (76) to fix the magnet (78) on the outer surface of the rotor core assembly group (74); And a step (96) of attaching and fixing the magnet (78) to the adhesive (76) after the step (94).

At this time, when the magnet 78 is attached, the adhesive 76 collects as it flows down to the lower end of the rotor core assembly group 74. At this time, as described above, by coupling the finishing rotor core 80 Even if the adhesive 76 flows down to the lower end of the rotor core assembly group 74, the adhesive 76 is prevented from flowing out from the lower end.

Therefore, when the rotor core assembly for a motor and the rotor core assembly assembly including the magnet according to the present invention are applied, it is possible to perform a removal operation for wiping out the adhesive using the nonwoven fabric and a cleaning operation It is possible to improve work efficiency and productivity, and in particular, it is possible to shorten the assembling time of the motor using the rotor core assembly.

Also, in the process of wiping off the adhesive agent spilled out with the nonwoven fabric, there is no case where the adhesive adhered to the nonwoven fabric adheres to the surface of the motor shaft or flows along the motor shaft, thereby maintaining smooth rotation of the motor shaft, Can be prevented from lowering.

As described in the background art, there is no need to use a marking jig used to prevent the adhesive from adhering to the motor shaft. Thus, it is possible to improve the convenience of the operation and to maintain and maintain the marking jig The problem of cost can be solved.

Although the preferred embodiments of the present invention have been described above, those skilled in the art will appreciate that various modifications and changes may be made by those skilled in the art. Modifications or variations of the embodiments of the present invention will therefore be within the technical scope of the present invention.

1, 16, 30, 70: rotor core assembly
2, 32: magnet
3, 34: Through hole
4, 36, 72: motor shaft
5, 38, 54, 82:
6, 40, 84: rotor core
7, 17, 42, 74: rotor core assembly group
8, 48: Landfill
9, 44, 76: Adhesive
10, 23: Marking jig
46, 80: Finishing rotor core
50: coupling means
52: engaging projection

Claims (6)

A rotor core assembly group 42 in which a rotor core 40 in which a coupling hole 38 is formed so as to be coupled with a through hole 34 for embedding the magnet 32 and a motor shaft 36 is stacked;
An adhesive (44) applied in the embedding hole (48) of the rotor core assembly group (42) into which the through holes (34) are united by the lamination of the rotor core (40);
A magnet 32 fixedly attached to the adhesive 44 in an inserted form in the embedding hole 48;
The lower end of the embedding hole 48 is closed so that the adhesive 44 does not flow down from the lower end of the embedding hole 48. The lower end of the embedding hole 48 is connected to the motor shaft 36, A rotor core 46;
The rotor core assembly for a motor according to claim 1,
The method according to claim 1,
Is disposed at the lower end of the finishing rotor core 46 and the rotor core assembly group 42 for engagement between the finishing rotor core 46 and the rotor core 40 disposed at the lower end of the rotor core assembly group 42 And a coupling means (50) is provided on the rotor core (40), respectively.
The method of claim 2,
Wherein the coupling means comprises a coupling hole formed in the finishing rotor core and an engaging projection formed in the rotor core. .
Coupling the motor shaft 36 to the coupling hole 38 of the rotor core assembly group 42;
After the step (60), the rotor core assembly group 42 in which the magnets 32 are embedded is installed in the lower end of the rotor core assembly group 42 so that the embedding holes 48 of the rotor core assembly group 42 are not opened in the downward direction. (62) blocking the lower opening of the embedding hole (46) in engagement with the motor shaft (36);
A step (64) of applying an adhesive (44) for fixing the magnet (32) to the inner surface of the embedding hole (46) of the rotor core assembly group (42) after the step (62);
And a step (66) of pushing and inserting the magnet (32) into the buried hole (46) after the step (64).
A rotor core assembly group 74 which is coupled and fixed by a coupling structure in which the motor shaft 72 penetrates, and a rotor core 84 is laminated;
An adhesive 76 applied to an outer surface of the rotor core assembly group 74;
A magnet 78 fixedly attached to the adhesive 76;
In order to prevent the adhesive 76 from flowing out to the lower end of the rotor core assembly group 74, the rotor core assembly group 74 to which the magnets 78 are attached is arranged so as not to open downward, 72; < / RTI >
The rotor core assembly for a motor according to claim 1,
Coupling the motor shaft 72 to the coupling hole 82 of the rotor core assembly 74;
After the step 90, the rotor core assembly group 74 to which the magnets 78 are attached is not opened in the downward direction. To the lower end of the rotor core assembly group 74, a finishing rotor core 80 is mounted on the motor shaft 72 (92) blocking the lower opening of the rotor core assembly (74) in a combined state;
A step (94) of applying an adhesive (76) to fix the magnet (78) on the outer surface of the rotor core assembly group (74) after the step (92);
Attaching (96) the magnet (78) to the adhesive (76) after the step (94);
Wherein the magnet assembly includes a plurality of magnet assemblies.
KR1020150187657A 2015-12-28 2015-12-28 Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly KR20170077930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150187657A KR20170077930A (en) 2015-12-28 2015-12-28 Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150187657A KR20170077930A (en) 2015-12-28 2015-12-28 Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly

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KR20170077930A true KR20170077930A (en) 2017-07-07

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KR1020150187657A KR20170077930A (en) 2015-12-28 2015-12-28 Rotor Core Assembly for Motor with Buried Magnet and Manufacturing Method of Rotor Core Assembly

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102444502B1 (en) 2022-04-06 2022-09-19 (주)동일전자 Rotor assembly to prevent malfunction of motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102444502B1 (en) 2022-04-06 2022-09-19 (주)동일전자 Rotor assembly to prevent malfunction of motor

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