KR20040065531A - A stator of slotless bldc motor - Google Patents

A stator of slotless bldc motor Download PDF

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Publication number
KR20040065531A
KR20040065531A KR1020040026728A KR20040026728A KR20040065531A KR 20040065531 A KR20040065531 A KR 20040065531A KR 1020040026728 A KR1020040026728 A KR 1020040026728A KR 20040026728 A KR20040026728 A KR 20040026728A KR 20040065531 A KR20040065531 A KR 20040065531A
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South Korea
Prior art keywords
core
stator
protrusion
groove
core pieces
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KR1020040026728A
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Korean (ko)
Inventor
최경식
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(주)키네모숀
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Priority to KR1020040026728A priority Critical patent/KR20040065531A/en
Publication of KR20040065531A publication Critical patent/KR20040065531A/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
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/18Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148Sectional cores
    • 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
    • H02K15/10Applying solid insulation to windings, stators or rotors
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings

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

Abstract

PURPOSE: A stator is provided to connect core pieces with each other in a simple and firm manner by slide-inserting the protrusion of a core piece to the groove of another core piece and caulking the connected portion. CONSTITUTION: A stator(1) comprises a plurality of core pieces(10) each of which is wound with a coil(30). The core pieces are connected with each other in such a manner that a through hole for accommodating a rotor is formed. Each of the core pieces has an end where a protrusion is formed in an axial direction, and the other end where a groove for accommodating the protrusion is formed. The protrusion of one core piece is axially slide-inserted into the groove of another neighbor core piece in such a manner that the connected portion between the protrusion and the groove is caulked.

Description

슬롯리스 BLDC 모터의 고정자{A STATOR OF SLOTLESS BLDC MOTOR}Stator of slotless BLDC motor {A STATOR OF SLOTLESS BLDC MOTOR}

본 발명은 슬롯리스 BLDC 모터의 고정자에 관한 것으로, 보다 상세하게는 코어편의 홈과 이웃하는 다른 코어편의 돌기를 삽입시켜 맞물린 상태에서 그 맞물린부위의 외측을 코킹함으로써 코어편이 간단하고 견고하게 연결된 슬롯리스 BLDC 모터의 고정자에 관한 것이다.The present invention relates to a stator of a slotless BLDC motor, and more particularly, to a slotlessly and firmly connected core piece by caulking the outer side of the engaged portion in the engaged state by inserting a protrusion of a neighboring core piece and a groove of the core piece. Relates to a stator of a BLDC motor.

BLDC 모터(Brushless DC Motor)는 코어에 코일이 감긴 고정자와, 상기 고정자에 대하여 상대적으로 회전되는 회전자를 포함한다. 상기 코어는 일반적으로 환형의 철판을 적층시켜 형성된다. 그러나, 철판을 환형으로 블랭킹하여 코어를 형성하는 경우 철판의 상당량이 스크랩(Scrap)으로 낭비될 뿐만 아니라 코어에 코일을 권선하는 작업이 매우 어렵다.A brushless DC motor includes a stator wound around a core and a rotor that is rotated relative to the stator. The core is generally formed by laminating an annular iron plate. However, in the case of forming the core by blanking the iron plate annularly, not only a considerable amount of the iron plate is wasted as scrap, but also the work of winding the coil on the core is very difficult.

본 출원인은 특허출원 제10-2003-0050917호로 복수개의 코어편을 연결하여 환형의 코어를 형성함으로써 상기의 문제점을 해결한 "슬롯리스 고정자를 갖는 브러시리스 직류 모터"를 특허출원한 바 있다. 상기 "슬롯리스 고정자를 갖는 브러시리스 직류 모터"의 코어는 한 코어편의 일단에 형성된 돌기가 이웃하는 다른 코어편에 형성된 요홈에 수용되어 서로 맞물려 복수의 코어편이 환형으로 연결됨으로써 형성된다. 이때, 상기 코어편의 돌기는 요홈에 억지끼워맞춤된다.The present applicant has filed a patent application "Brushless DC motor with slotless stator" which solves the above problems by connecting a plurality of core pieces to form an annular core by the patent application No. 10-2003-0050917. The core of the "brushless DC motor having a slotless stator" is formed by a projection formed at one end of one core piece being accommodated in a groove formed in another neighboring core piece and engaged with each other so that a plurality of core pieces are connected in an annular shape. At this time, the projection of the core piece is fitted to the groove.

그러나, 돌기와 요홈을 억지끼워맞춤하여 코어편을 연결하는 종래의 BLDC 모터의 슬롯리스 고정자는 코어편이 코어편적층판을 적층하여 형성되기 때문에 억지끼워맞춤되도록 하기 위한 돌기와 요홈의 정밀도 유지가 어려울 뿐만 아니라 억지끼워맞춤시 코어가 변형되는 단점을 갖는다.However, the slotless stator of the conventional BLDC motor that connects the core pieces by fitting the protrusions and the grooves is not only difficult to maintain the accuracy of the protrusions and the grooves for the interference fitting because the core pieces are formed by stacking the core laminated sheets. The disadvantage is that the core is deformed upon fitting.

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 한 코어편의 돌기를 다른 코어편의 요홈에 슬라이딩 삽입시켜 서로 맞물린 상태에서 서로 맞물린 부위의 외측을 코킹함으로써 간단히 코어편을 견고하게 연결할 수 있는 슬롯리스 BLDC 모터의 고정자를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to simply insert the projection of one core piece into the grooves of the other core piece to connect the core pieces simply by firmly interlocking the outside of the interlocking portions in the engaged state. To provide a stator for a slotless BLDC motor.

도 1은 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자를 도시한 평면도1 is a plan view showing a stator of a slotless BLDC motor according to an embodiment of the present invention;

도 2는 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자의 코일이 권선된 코어편을 도시한 사시도2 is a perspective view illustrating a core piece of coils wound around a stator of a slotless BLDC motor according to an embodiment of the present invention;

도 3은 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자의 코어편이 적층된 상태를 도시한 사시도Figure 3 is a perspective view showing a state in which the core pieces of the stator of the slotless BLDC motor according to an embodiment of the present invention is stacked

<주요 도면부호에 대한 간단한 설명><Short description of the major reference symbols>

1 고정자 10 코어편1 stator 10 core

10a 코어편적층판 11 돌기10a core laminated plate 11 protrusion

13 홈 15 코킹13 Home 15 Caulking

20 보빈 30 코일20 bobbin 30 coil

상기와 같은 목적을 달성하기 위하여 본 발명에 따른 슬롯리스 BLDC 모터의 고정자는, 복수의 코어편 각각에 코일이 절연되어 권선되고, 중심에 소정의 회전자가 회전가능하게 수용되기 위한 관통구멍이 형성되도록 상기 복수의 코어편이 연속적으로 연결된 슬롯리스 고정자에 있어서, 상기 코어편 각각의 일단부 말단에는 돌출방향으로 증가된 폭을 갖는 돌기가 축방향으로 길게 연장되어 형성되고, 상기 코어편 각각의 타단부 말단에는 상기 돌기가 수용되어 반경방향으로 빠지지 않게 맞물리도록 깊이방향으로 증가된 폭을 갖는 홈이 축방향으로 연장되어 형성되며, 상기 코어편은 한 코어편의 돌기를 다른 코어편의 홈에 축방향으로 슬라이딩 삽입시켜 서로 맞물리게 한 상태에서 돌기와 홈이 서로 맞물린 외측 부위가 코킹되어 결합된 것을 특징으로 한다.In order to achieve the above object, the stator of the slotless BLDC motor according to the present invention has a coil insulated and wound around each of the plurality of core pieces, and a through hole is formed in the center so that a predetermined rotor is rotatably received. In the slotless stator to which the plurality of core pieces are continuously connected, a protrusion having an increased width in the protruding direction is formed to extend in the axial direction at one end of each of the core pieces, and the other end of each of the core pieces. The groove is formed by extending in the axial direction the groove having an increased width in the depth direction so that the projection is accommodated so as not to fall out in the radial direction, the core piece is inserted into the groove of the other core piece in the axial direction sliding insert And the outer parts of the protrusion and the groove engaged with each other in the state in which they are engaged with each other are coupled to each other. The.

상기와 같이 결합된 코어편은 상기 돌기와 홈이 맞물려 반경방향으로 빠지지 않을 뿐만 아니라 맞물린 부위의 외측이 코킹(Caulking)으로 변형됨으로써 이웃하는 코어편이 맞닿는 부위가 서로 끼이게 되어 축방향으로도 빠지지 않게 된다.As described above, the combined core pieces do not fall out in the radial direction due to the engagement of the protrusions and the grooves, and the outer sides of the engaged parts are deformed by caulking, so that the parts where the neighboring core pieces come into contact with each other are stuck in the axial direction. .

이하에서는 도면에 도시된 실시예를 참조하여 본 발명에 따른 슬롯리스 BLDC 모터의 고정자를 보다 상세하게 설명하기로 한다.Hereinafter, a stator of a slotless BLDC motor according to the present invention will be described in more detail with reference to the embodiment shown in the drawings.

도 1은 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자를 도시한 평면도이고, 도 2는 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자의 코일이 권선된 코어편을 도시한 사시도이며, 도 3은 본 발명의 일실시예에 따른 슬롯리스 BLDC 모터의 고정자의 코어편이 적층된 상태를 도시한 사시도이다.1 is a plan view illustrating a stator of a slotless BLDC motor according to an embodiment of the present invention, and FIG. 2 illustrates a core piece wound around a coil of a stator of a slotless BLDC motor according to an embodiment of the present invention. 3 is a perspective view illustrating a state in which core pieces of a stator of a slotless BLDC motor according to an embodiment of the present invention are stacked.

도면을 참조하면, 본 발명에 따른 슬롯리스 BLDC 모터의 고정자(1)는 각각에 코일(30)이 절연되어 감긴 복수의 코어편(10)을 중심에 소정의 회전자(도면에 미도시)가 회전가능하게 수용되기 위한 관통구멍이 형성되도록 연속적으로 연결하여 형성된다. 도면을 참조하면, 상기 코일(30)은 실패 모양의 보빈(20)에 감기며, 상기 보빈(20)에는 상기 코어편(10)이 삽입된다. 상기 고정자(1)는 상기와 같이 보빈(20)에 코어편(10)이 삽입된 상태에서 코어편(10)을 연속적으로 연결하여 형성된다.Referring to the drawings, the stator 1 of the slotless BLDC motor according to the present invention has a predetermined rotor (not shown in the drawing) centered around a plurality of core pieces 10 wound around the coil 30 insulated from each other. It is formed by connecting continuously so that a through hole for rotatably received is formed. Referring to the figure, the coil 30 is wound around the bobbin 20 of the failure shape, the core piece 10 is inserted into the bobbin 20. The stator 1 is formed by continuously connecting the core pieces 10 in a state where the core pieces 10 are inserted into the bobbin 20 as described above.

일반적으로 상기 코어편(10)은 두께가 얇은 코어편적층판(10a)을 적층하여 형성된다. 상기와 같이 코어편적층판(10a)을 적층하여 형성된 코어편(10) 각각의 일단부 말단에는 코어편(10) 끼리의 연결을 위해 돌출방향(원주방향)으로 증가된 폭을 갖는 돌기(11)가 축방향으로 길게 연장되어 형성된다. 그리고, 상기 코어편(10) 각각의 타단부 말단에는 상기 돌기(11)가 수용되어 반경방향으로 빠지지 않게 맞물리도록 깊이방향(반경방향)으로 증가된 폭을 갖는 홈(13)이 축방향으로 연장되어 형성된다. 상기와 같은 코어편(10)은 한 코어편의 돌기(11)를 다른 코어편의 홈(13)에 축방향으로 슬라이딩 삽입시켜 서로 맞물리게 한 상태에서 돌기(11)와 홈(13)이 서로 맞물린 외측 부위를 코킹(15)함으로써 서로 결합된다.In general, the core piece 10 is formed by stacking a thin core laminate layer 10a. Projections 11 having an increased width in the protruding direction (circumferential direction) at one end of each of the core pieces 10 formed by stacking the core laminated layer 10a as described above for connection between the core pieces 10. Is elongated in the axial direction. In addition, a groove 13 having an increased width in the depth direction (radial direction) extends in the axial direction at the other end of each of the core pieces 10 so that the protrusion 11 is received and engaged in a radial direction. It is formed. The core piece 10 as described above has an outer portion where the protrusion 11 and the groove 13 are engaged with each other in a state in which the projection 11 of one core piece is slidably inserted into the groove 13 of the other core piece to be engaged with each other. Are joined to each other by caulking 15.

이때, 상기 돌기(11)는 돌출방향으로 폭이 증가되고 상기 홈(13)은 깊이방향으로 폭이 증가되기 때문에 상기 홈(13)에 수용된 돌기(11)는 반경방향으로 빠지지않고 상기 홈(13)에 맞물린다. 또한, 서로 맞물린 부위의 외측이 코킹(15)으로 변형됨으로써 서로 맞닿은 부위가 꽉 끼이게 되어 상기 돌기(11)는 상기 홈(13)으로부터 축방향으로도 빠지지 않게 된다. 특히, 상술한 바와 같이 상기 돌기(11)는 상기 홈(13)에 억지끼워맞춤이 아니라 슬라이딩 삽입되기 때문에 상기 홈(13)에 쉽게 삽입되고 억지끼워맞춤으로 인한 코어의 변형을 피할 수 있다. 또한, 코킹(15)는 정(Chisel)으로 서로 맞물린 부위를 타격하여 변형시킴으로써 간단하게 형성된다. 따라서, 상기 홈(13)과 상기 돌기(11)를 결합시키는 작업은 매우 간단하고 신속하게 이루어질 뿐만 아니라 코어편(10)이 서로 견고하게 연결된다.At this time, since the protrusion 11 increases in width in the protruding direction and the groove 13 increases in width in the depth direction, the protrusion 11 accommodated in the groove 13 does not fall out in the radial direction and the groove 13 ) In addition, the outer portions of the portions engaged with each other are deformed by the caulking 15, so that the portions in contact with each other are tightly pinched so that the protrusions 11 do not fall out of the grooves 13 in the axial direction. In particular, as described above, the protrusion 11 is not inserted into the groove 13 but slidingly inserted, so that the protrusion 11 is easily inserted into the groove 13 and the deformation of the core due to the interference fit can be avoided. In addition, the caulking 15 is simply formed by hitting and deforming the parts engaged with each other by Chisel. Therefore, the operation of coupling the groove 13 and the protrusion 11 is very simple and quick, and the core pieces 10 are firmly connected to each other.

상기와 같은 구성을 갖는 본 발명에 따른 슬롯리스 BLDC 모터의 고정자는 한 코어편의 돌기를 다른 코어편의 홈에 슬라이딩 삽입시켜 서로 맞물린 상태에서 서로 맞물린 부위의 외측을 코킹함으로써 코어편을 간단하고 견고하게 연결할 수 있는 장점을 갖는다.The stator of the slotless BLDC motor according to the present invention having the configuration as described above simply connects the core pieces simply and firmly by sliding the protrusions of one core piece into the grooves of the other core pieces and caulking the outside of the portions engaged with each other. Has the advantage.

앞에서 설명되고 도면에 도시된 슬롯리스 BLDC 모터의 고정자는 본 발명을 실시하기 위한 하나의 실시예에 불과하며, 본 발명의 기술적 사상을 한정하는 것으로 해석되어서는 안된다. 본 발명의 보호범위는 이하의 특허청구범위에 기재된 사항에 의해서만 정하여지며, 본 발명의 요지를 벗어남이 없이 개량 및 변경된 실시예는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 자명한 것인 한 본 발명의 보호범위에 속한다고 할 것이다.The stator of the slotless BLDC motor described above and shown in the drawings is only one embodiment for implementing the present invention, and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments which have been improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

Claims (1)

복수의 코어편 각각에 코일이 절연되어 권선되고, 중심에 소정의 회전자가 회전가능하게 수용되기 위한 관통구멍이 형성되도록 상기 복수의 코어편이 연속적으로 연결된 슬롯리스 고정자에 있어서,In a slotless stator in which a coil is insulated and wound around each of the plurality of core pieces, and the plurality of core pieces are continuously connected to each other so that a through hole for rotatably receiving a predetermined rotor is formed in the center thereof. 상기 코어편 각각의 일단부 말단에는 돌출방향으로 증가된 폭을 갖는 돌기가 축방향으로 길게 연장되어 형성되고, 상기 코어편 각각의 타단부 말단에는 상기 돌기가 수용되어 반경방향으로 빠지지 않게 맞물리도록 깊이방향으로 증가된 폭을 갖는 홈이 축방향으로 길게 연장되어 형성되며,At one end of each of the core pieces, a protrusion having an increased width in the protruding direction is formed to extend in the axial direction, and at the other end of each of the core pieces, the protrusion is accommodated so that the protrusion does not fall out in a radial direction. A groove having an increased width in the direction is formed extending in the axial direction, 상기 코어편은 한 코어편의 돌기를 이웃하는 다른 코어편의 홈에 축방향으로 슬라이딩 삽입시켜 서로 맞물리게 한 상태에서 돌기와 홈이 서로 맞물린 외측 부위가 코킹되어 결합된 것을 특징으로 하는 슬롯리스 BLDC 모터의 고정자.The core piece is a stator of a slotless BLDC motor, characterized in that the protrusion of one core piece is slidably inserted into the groove of another neighboring core piece in the axial direction so as to be engaged with each other.
KR1020040026728A 2004-04-19 2004-04-19 A stator of slotless bldc motor KR20040065531A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100564090B1 (en) * 2003-12-10 2006-03-24 뉴모텍(주) Stator core of motor
WO2011014934A1 (en) 2009-08-03 2011-02-10 Atlas Copco Airpower Turbocompressor system
FR3100399A1 (en) 2019-08-27 2021-03-05 Moving Magnet Technologies Toroidal winding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100564090B1 (en) * 2003-12-10 2006-03-24 뉴모텍(주) Stator core of motor
WO2011014934A1 (en) 2009-08-03 2011-02-10 Atlas Copco Airpower Turbocompressor system
US9470238B2 (en) 2009-08-03 2016-10-18 Atlas Copco Airpower, Naamloze Vennootschap Electric motor having segmented stator windings
FR3100399A1 (en) 2019-08-27 2021-03-05 Moving Magnet Technologies Toroidal winding machine

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