KR20020049503A - Motor with cooling fan - Google Patents

Motor with cooling fan Download PDF

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Publication number
KR20020049503A
KR20020049503A KR1020000078688A KR20000078688A KR20020049503A KR 20020049503 A KR20020049503 A KR 20020049503A KR 1020000078688 A KR1020000078688 A KR 1020000078688A KR 20000078688 A KR20000078688 A KR 20000078688A KR 20020049503 A KR20020049503 A KR 20020049503A
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KR
South Korea
Prior art keywords
cooling fan
rotating shaft
motor
ring
stop ring
Prior art date
Application number
KR1020000078688A
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Korean (ko)
Inventor
이강운
Original Assignee
이충전
삼성광주전자 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.)
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Application filed by 이충전, 삼성광주전자 주식회사 filed Critical 이충전
Priority to KR1020000078688A priority Critical patent/KR20020049503A/en
Publication of KR20020049503A publication Critical patent/KR20020049503A/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

PURPOSE: A motor provided with a cooling fan is provided to improve the assembly process by assembling the cooling fan on a rotational shaft of a motor through a retaining ring. CONSTITUTION: A plane stepped unit(21) is formed on an outer surface of a rotational shaft(20). A plane projecting unit is formed on an inner surface of a coupling unit of a cooling fan(30) corresponding to the plane stepped unit(21). A retaining ring(40) of a collet shape is coupled to a front end of the rotational shaft(20) so that the cooling fan(30) is not separated from the rotational shaft(20). The retaining ring(40) includes a ring body contacted to the cooling fan(30) and plural collets projected along the inner surface of the ring body.

Description

냉각팬 부착형 전동기{Motor with cooling fan}Motor with cooling fan {Motor with cooling fan}

본 발명은 냉각팬이 부착된 전동기에 관한 것으로서, 보다 상세하게는 모터 회전축과 냉각팬의 조립이 간단하도록 개량된 냉각팬 부착형 전동기에 관한 것이다.The present invention relates to an electric motor with a cooling fan, and more particularly, to a cooling fan attachment type electric motor improved to simplify assembly of a motor rotating shaft and a cooling fan.

일반적으로 단상 및 3상 유도 전동기에는 전동기 본체에서 발생되는 열을 냉각하기 위하여 회전축의 일단에 냉각팬이 설치된다.In general, the single-phase and three-phase induction motor is provided with a cooling fan at one end of the rotating shaft to cool the heat generated from the motor body.

도 1에 도시된 바와 같이, 종래의 냉각팬 부착형 전동기는 전동기 본체(1)의 회전자(미도시)로부터 연장된 회전축(2)과, 이 회전축(2)에 결합되는 냉각팬(3)을 구비하며, 회전축(2) 선단에는 스냅링(4)이 체결된다.As shown in FIG. 1, a conventional cooling fan attachment type motor has a rotating shaft 2 extending from a rotor (not shown) of the motor body 1, and a cooling fan 3 coupled to the rotating shaft 2. And a snap ring 4 is fastened to the end of the rotation shaft 2.

도 2a에 도시된 바와 같이, 상기 회전축(2)에는 축방향으로 키홈(2a)이 형성되며, 원주방향으로는 스냅링(4)이 결합될 수 있도록 결합홈(2b)이 형성된다. 한편, 도 2b에 도시된 바와 같이, 냉각팬(3)에는 회전축(2)과의 결합부에 키(3a)가 돌출 형성된다.As shown in FIG. 2A, a key groove 2a is formed in the rotation shaft 2 in the axial direction, and a coupling groove 2b is formed in the circumferential direction so that the snap ring 4 can be engaged. On the other hand, as shown in Figure 2b, the cooling fan 3 is formed with a key (3a) protruding to the engaging portion with the rotating shaft (2).

이상과 같이 구성된 종래의 전동기는 상기 키홈(2a)에 키(3a)가 삽입되도록 냉각팬(3)을 회전축(2)에 끼운 후, 냉각팬(3)이 회전축(2)으로부터 이탈되지 않도록 회전축(2)의 결합홈(2b)에 스냅링(4)을 체결하는 것으로써 조립된다.After the conventional electric motor configured as described above has inserted the cooling fan 3 into the rotary shaft 2 so that the key 3a is inserted into the key groove 2a, the rotary shaft is not separated from the rotary shaft 2. It is assembled by fastening the snap ring 4 to the engaging groove 2b of (2).

그러나, 이러한 종래의 냉각팬 부착형 전동기에 의하면 회전축(2)에 키홈(2a) 및 결합홈(2b)을 가공하는 데 어려움이 있으며, 조립 공수가 많이 든다는 문제가 있다.However, according to the conventional cooling fan attachment type motor, it is difficult to process the key groove 2a and the coupling groove 2b in the rotation shaft 2, and there is a problem in that a lot of assembly labor is required.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 전동기의 회전축에 냉각팬을 간단하게 조립할 수 있는 냉각팬 부착형 전동기를 제공하는 데 그 목적이 있다.The present invention has been made to solve the above problems, an object of the present invention is to provide a cooling fan-mounted motor that can easily assemble a cooling fan on the rotating shaft of the motor.

도 1은 종래의 냉각팬 부착형 전동기를 개략적으로 나타낸 측면도.1 is a side view schematically showing a conventional cooling fan-attached electric motor.

도 2a는 종래 냉각팬 부착형 전동기의 회전축을 나타낸 측면도 및 정면도.Figure 2a is a side view and a front view showing a rotating shaft of the conventional cooling fan-mounted motor.

도 2b는 종래 냉각팬 부착형 전동기의 냉각팬을 나타낸 측면도 및 정면도.Figure 2b is a side view and a front view showing a cooling fan of the conventional cooling fan-mounted electric motor.

도 3은 본 발명에 따른 냉각팬 부착형 전동기를 개략적으로 나타낸 측면도.Figure 3 is a side view schematically showing a cooling fan-mounted electric motor according to the present invention.

도 4a는 도 3의 냉각팬 부착형 전동기의 회전축을 나타낸 정면도.Figure 4a is a front view showing a rotating shaft of the cooling fan attached motor of Figure 3;

도 4b는 도 3의 냉각팬 부착형 전동기의 냉각팬을 나타낸 정면도.Figure 4b is a front view showing a cooling fan of the cooling fan-mounted motor of Figure 3;

도 5는 도 3의 냉각팬 부착형 전동기의 멈춤링을 나타낸 사시도.FIG. 5 is a perspective view illustrating a stop ring of the cooling fan mounted motor of FIG. 3. FIG.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 전동기 본체20 : 회전축10: motor body 20: rotating shaft

21 : 평면 단차부30 : 냉각팬21: flat stepped portion 30: cooling fan

31 : 평면 돌출부40 : 멈춤링31: flat projection 40: stop ring

41 : 링체42 : 콜릿(Collet)41 ring body 42 collet

43 : 평면부43: flat part

상기와 같은 목적을 달성하기 위하여, 본 발명에 따른 냉각팬 부착형 전동기는 회전축의 외주면에 형성된 평면 단차부와, 상기 평면 단차부에 대응하여 냉각팬의 결합부 내주면에 형성된 평면 돌출부와, 상기 냉각팬이 상기 회전축으로부터 이탈되지 않도록 상기 회전축의 선단에 결합된 콜릿(collet) 형태의 멈춤링을 포함하는 것을 특징으로 한다.In order to achieve the above object, the cooling fan-mounted motor according to the present invention is a flat stepped portion formed on the outer circumferential surface of the rotating shaft, a planar protrusion formed on the inner circumferential surface of the coupling portion corresponding to the flat stepped portion, and the cooling It characterized in that it comprises a collet-shaped stop ring coupled to the tip of the rotary shaft so that the fan does not deviate from the rotary shaft.

여기서, 상기 멈춤링은 상기 냉각팬과 접촉되는 링체와, 상기 링체의 내주를 따라 반구형으로 돌출 형성되며 다수개로 분할된 콜릿을 포함하는 것이 바람직하다.Here, the stop ring preferably includes a ring body in contact with the cooling fan, and a collet protruded in a hemispherical shape along the inner circumference of the ring body and divided into a plurality of collets.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3에 도시된 바와 같이, 본 발명에 따른 냉각팬 부착형 전동기는 전동기 본체(10)의 회전자(미도시)로부터 연장된 회전축(20)과, 이 회전축(20)에 결합되는 냉각팬(30)을 구비한다는 점에서는 종래와 동일하다.As shown in FIG. 3, the cooling fan attachment type motor according to the present invention includes a rotating shaft 20 extending from a rotor (not shown) of the motor body 10, and a cooling fan coupled to the rotating shaft 20 ( 30) is the same as the conventional one in that it is provided.

다만, 도 4a 및 도 4b에 도시된 바와 같이, 상기 회전축(20)의 외주면에는 평면 단차부(21)가 형성되며, 상기 냉각팬(30)의 회전축(20)과의 결합부 내주면에는 상기 평면 단차부(21)에 대응하여 평면 돌출부(31)가 형성된다. 이 평면 단차부(21)와 평면 돌출부(31)가 맞물림으로써 회전축(20)의 회전에 연동하여 냉각팬(30)이 회전하게 된다. 또한, 상기 회전축(20)의 선단에는 냉각팬이 회전축으로부터 이탈되지 않도록 콜릿(collet) 형태의 멈춤링(40)이 결합된다.4A and 4B, a flat step portion 21 is formed on the outer circumferential surface of the rotation shaft 20, and the plane is formed on the inner circumferential surface of the coupling part with the rotation shaft 20 of the cooling fan 30. The planar protrusion 31 is formed to correspond to the stepped portion 21. By engaging the planar step portion 21 and the planar protrusion 31, the cooling fan 30 rotates in conjunction with the rotation of the rotation shaft 20. In addition, a collet-shaped stop ring 40 is coupled to the front end of the rotating shaft 20 so that the cooling fan does not leave the rotating shaft.

도 5에 도시된 바와 같이, 상기 멈춤링(40)은 냉각팬(30)과 접촉되는 링체(41)와, 이 링체(41)의 내주를 따라 상기 회전축(20) 중심 방향으로 반구형으로 돌출 형성되며 다수개로 분할된 콜릿(42)으로 구성된다. 본 실시예에서 상기 콜릿(42)은 탄성체로 형성되어 멈춤링(40)이 회전축(20)과의 결합 후에 회전축(20)으로부터 이탈되지 않도록 한다. 한편, 멈춤링(40)의 상기 회전축(20)의 평면 단차부(40)와의 접합부에는 콜릿(42) 대신 반구형의 평면부(43)가 형성된다.As shown in FIG. 5, the stop ring 40 has a ring body 41 in contact with the cooling fan 30, and protrudes in a hemispherical shape toward the center of the rotation shaft 20 along the inner circumference of the ring body 41. It is composed of a plurality of divided collet (42). In the present embodiment, the collet 42 is formed of an elastic body so that the stop ring 40 is not separated from the rotation shaft 20 after engagement with the rotation shaft 20. On the other hand, a hemispherical flat portion 43 is formed instead of the collet 42 at the junction of the stop ring 40 with the flat stepped portion 40 of the rotation shaft 20.

이상과 같이 구성된 본 발명에 따른 냉각팬 부착형 전동기의 조립방법은 다음과 같다.The assembly method of the cooling fan-mounted motor according to the present invention configured as described above is as follows.

먼저, 평면 단차부(21)와 평면 돌출부(31)가 접하도록 냉각팬(30)을 회전축(20)에 끼워 넣은 후, 평면 단차부(21)와 평면부(43)가 접하도록 냉각팬(30) 외측의 회전축(20) 선단에 멈춤링(40)을 결합한다. 이때, 멈춤링(40)은 콜릿(42)이 바깥 방향으로 벌어진 상태로 회전축(20)의 선단에 결합되며, 콜릿(42)의 탄성 복원력에 의해 회전축(20)에 단단히 고정된다.First, the cooling fan 30 is inserted into the rotating shaft 20 so that the flat stepped portion 21 and the flat protrusion 31 contact each other, and then the cooling fan 30 is brought into contact with the flat stepped portion 21 and the flat portion 43. 30) The stop ring 40 is coupled to the outer end of the rotating shaft 20. At this time, the stop ring 40 is coupled to the front end of the rotating shaft 20 in a state in which the collet 42 is spread outward, and is firmly fixed to the rotating shaft 20 by the elastic restoring force of the collet 42.

이상에서 설명한 바와 같이, 본 발명에 따른 냉각팬 부착형 전동기에 의하면, 회전축(20)에 별도의 홈 가공 없이 평면 단차부(21)만을 커팅 가공하면 되므로 가공이 간단하며, 멈춤링(40)을 사용하여 냉각팬(30)을 전동기의 회전축(20)에 간단하게 조립할 수 있다.As described above, according to the cooling fan-mounted electric motor according to the present invention, since only the flat step portion 21 needs to be cut without any additional groove processing on the rotating shaft 20, the processing is simple, and the stop ring 40 is removed. The cooling fan 30 can be easily assembled to the rotating shaft 20 of the electric motor.

이상에서는 본 발명의 특정의 바람직한 실시예에 대하여 도시하고 또한 설명하였다. 그러나, 본 발명은 상술한 실시예에 한정되지 아니하며, 특허청구의 범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능할 것이다.In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.

Claims (2)

회전축의 외주면에 형성된 평면 단차부;A planar step portion formed on an outer circumferential surface of the rotating shaft; 상기 평면 단차부에 대응하여 냉각팬의 결합부 내주면에 형성된 평면 돌출부; 및A planar protrusion formed on an inner circumferential surface of a coupling part of the cooling fan corresponding to the planar stepped part; And 상기 냉각팬이 상기 회전축으로부터 이탈되지 않도록 상기 회전축의 선단에 결합된 콜릿(collet) 형태의 멈춤링;을 포함하는 것을 특징으로 하는 냉각팬 부착형 전동기.And a collet-shaped stop ring coupled to the distal end of the rotating shaft such that the cooling fan is not separated from the rotating shaft. 제 1 항에 있어서, 상기 멈춤링은The method of claim 1, wherein the stop ring 상기 냉각팬과 접촉되는 링체; 및A ring body in contact with the cooling fan; And 상기 링체의 내주를 따라 반구형으로 돌출 형성되며 다수개로 분할된 콜릿;을 포함하는 것을 특징으로 하는 냉각 부착형 전동기.Cooling-type electric motor comprising a; is formed in a hemispherical shape along the inner circumference of the ring body and divided into a plurality of collets.
KR1020000078688A 2000-12-19 2000-12-19 Motor with cooling fan KR20020049503A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100935158B1 (en) * 2008-04-02 2010-01-06 주식회사 제이엠더블유 Coupling apparatus for rotor blade of blush less direct current motor in hair dryer
KR102641763B1 (en) * 2023-08-30 2024-02-28 주식회사 오토글로벌 Reducer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880003496Y1 (en) * 1985-06-25 1988-10-05 삼성전자 주식회사 Diskette eject device of a floppy diskette driver
KR960018284U (en) * 1994-11-26 1996-06-19 Fan / Blower Fastening Device of Air Conditioner
KR19990035635A (en) * 1997-10-31 1999-05-15 윤종용 Air Conditioning Equipment
KR20000008564U (en) * 1998-10-23 2000-05-15 전주범 Fan motor motor shaft coupling structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR880003496Y1 (en) * 1985-06-25 1988-10-05 삼성전자 주식회사 Diskette eject device of a floppy diskette driver
KR960018284U (en) * 1994-11-26 1996-06-19 Fan / Blower Fastening Device of Air Conditioner
KR19990035635A (en) * 1997-10-31 1999-05-15 윤종용 Air Conditioning Equipment
KR20000008564U (en) * 1998-10-23 2000-05-15 전주범 Fan motor motor shaft coupling structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100935158B1 (en) * 2008-04-02 2010-01-06 주식회사 제이엠더블유 Coupling apparatus for rotor blade of blush less direct current motor in hair dryer
KR102641763B1 (en) * 2023-08-30 2024-02-28 주식회사 오토글로벌 Reducer

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