KR20010056738A - Pully mounting of blower for air conditioner - Google Patents

Pully mounting of blower for air conditioner Download PDF

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Publication number
KR20010056738A
KR20010056738A KR1019990058329A KR19990058329A KR20010056738A KR 20010056738 A KR20010056738 A KR 20010056738A KR 1019990058329 A KR1019990058329 A KR 1019990058329A KR 19990058329 A KR19990058329 A KR 19990058329A KR 20010056738 A KR20010056738 A KR 20010056738A
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KR
South Korea
Prior art keywords
pulley
shaft
rod
blower
fixing screw
Prior art date
Application number
KR1019990058329A
Other languages
Korean (ko)
Inventor
이상영
Original Assignee
구자홍
엘지전자 주식회사
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Publication date
Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019990058329A priority Critical patent/KR20010056738A/en
Publication of KR20010056738A publication Critical patent/KR20010056738A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0847—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to a radial screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/0876—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with axial keys and no other radial clamping

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Pulleys (AREA)

Abstract

PURPOSE: Connecting structure of a pulley is provided to enhance assembling/disassembling efficiency by excluding the connecting structure using external force including a taper key. CONSTITUTION: A second rod(22) of a shaft(20) is inserted into a pulley(10), and a fixing screw(12) is inserted into a fixing screw groove(11) on a side of the pulley. The fixing screw is adopted to deliver a fixing force in a rotational direction from the shaft to the pulley. The front end of the fixing screw is inserted into a fixing groove(24) preferably. Then a nut(25) is connected to a thread of a third rod(23) of the shaft to limit the axial movement of the pulley. The pulley is in contact with a first rod(21) of the shaft on the left to be coupled with the second rod. The third rod having a thread on the right of the pulley is protruded. After that, the nut is connected to the third rod to fix the pulley in an axial direction of the shaft. The pulley receives the regular support force in a circumferential direction for the shaft has both left and right contact portions(13,14) having taper at both sides of a fitting hole. The first rod and the nut are in taper contact corresponding to the left and right contact portions. The pulley is disassembled from the shaft in reverse order of the assembling processes.

Description

공기조화기용 송풍장치의 풀리체결구조{Pully mounting of blower for air conditioner}Pulley mounting structure of blower for air conditioner

본 발명은 공기조화기용 송풍장치의 풀리체결구조에 관한 것으로서, 특히 전동기로부터 구동력을 전달받는 풀리의 체결성을 높여 안정된 동력전달을 이루고 체결 작업성을 향상시킬 수 있도록 한 공기조화기용 송풍장치의 풀리체결구조에 관한 것이다.The present invention relates to a pulley fastening structure of a blower for an air conditioner, and in particular, a pulley of a blower for an air conditioner to achieve a stable power transmission and improve fastening workability by increasing the fastening property of a pulley receiving a driving force from an electric motor. It relates to a fastening structure.

일반적으로 공기조화기란 건물이나 방과 같은 실내의 공기를 사용목적에 따라 온도, 습도, 기류흐름, 정화 등의 요소를 최적의 조건으로 유지하기 위하여 냉방 및 난방, 정화기능을 수행하는 장치이다.In general, an air conditioner is a device that performs cooling, heating, and purification functions in order to maintain elements such as temperature, humidity, air flow, and purification at optimum conditions according to the purpose of using indoor air such as a building or a room.

이러한 공기 조화기는 냉매를 증발시키는 증발기와, 냉매가스를 압축하는 압축기와, 기체 냉매의 열을 대기중으로 방출시켜 액체 냉매로 변환시키는 응축기와, 저온화된 증발기에 대기중(실내)의 공기를 불어넣어 고온 다습한 공기를 저온 제습공기로 변화시켜 실내로 유입시키는 송풍장치와, 이러한 기본장치를 제어하여 쾌적한 실내환경을 조성하는 전자제어장치 등으로 이루어진다.Such an air conditioner includes an evaporator for evaporating a refrigerant, a compressor for compressing a refrigerant gas, a condenser for releasing heat from a gas refrigerant into the liquid and converting it into a liquid refrigerant, and blowing the air in the atmosphere (indoor) to a low temperature evaporator. It is composed of a blower that changes the high temperature and high humidity air into low temperature dehumidified air and introduces it into the room, and an electronic control device that controls the basic device to create a comfortable indoor environment.

첨부된 도면 도 1은 종래 기술에 의한 송풍장치의 풀리체결구조를 나타낸 사시도이고, 도 2는 종래 기술에 의한 풀리체결구조를 나타낸 단면도이다.1 is a perspective view showing a pulley fastening structure of a blower according to the prior art, Figure 2 is a cross-sectional view showing a pulley fastening structure according to the prior art.

상기 송풍장치(100)는 응축기(105) 또는 증발기(미도시)에서 냉각 또는 가열된 공기를 실내로 불어넣어 주는 장치로서, 회전력을 발생시키는 전동기(110)와, 이 전동기(110)와 벨트(120)로 연결되는 송풍팬으로 이루어지며, 상기 송풍팬(미도시)에 연결된 회전 샤프트(140)는 벨트(120)와 연결될 수 있도록 풀리(130)가 장착된다.The blower 100 is a device that blows air cooled or heated in a condenser 105 or an evaporator (not shown) to the room, and generates an electric motor 110, the electric motor 110, and a belt ( It is made of a blowing fan connected to 120, the rotating shaft 140 is connected to the blowing fan (not shown) is equipped with a pulley 130 to be connected to the belt 120.

즉, 상기 풀리(130)에는 샤프트(140)가 삽입되는 축관통홈(131)의 내주면에 축방향으로 소정의 경사각을 갖도록 형성된 테이퍼키홈(132)이 형성되고, 이 테이퍼키홈(132)에 테이퍼키(150)를 때려박아 풀리(130)에 샤프트(140)를 고정한다.That is, the pulley 130 is formed with a tapered key groove 132 formed to have a predetermined inclination angle in the axial direction on the inner circumferential surface of the shaft through groove 131 into which the shaft 140 is inserted, and the taper key groove 132 is tapered. Hit the key 150 to fix the shaft 140 to the pulley (130).

그리고, 상기 풀리(130) 일측에 돌출 성형된 플랜지(135)에는 원둘레에 수직방향으로 암나사가 가공된 고정나사홈(136)이 형성되어 있어, 이 고정나사홈(136)에 상기 고정나사(160)를 나사결합시키면 그 선단부가 샤프트(140)에 접촉되어 접촉력이 발생된다.In addition, the flange 135 protruded to one side of the pulley 130 is formed with a fixing screw groove 136 in which a female thread is processed in a direction perpendicular to a circumference thereof, and the fixing screw 160 is formed in the fixing screw groove 136. ) Is screwed to the tip portion of the shaft 140 to generate a contact force.

그러나, 종래 공기조화기용 송풍장치의 풀리체결구조는 테이퍼키(150)를 풀리(130)와 샤프트(140) 사이에 때려박음 작업을 통해 위치고정시키기 때문에 작업중 가해지는 충격에 의해 제품 손상의 원인을 초래하며, 아울러 상기 풀리(130)와 샤프트(140)의 축중심이 어긋나게 위치고정되는 문제점이 있다.However, in the conventional pulley fastening structure of the air conditioner blower, the taper key 150 is fixed between the pulley 130 and the shaft 140 through the punching operation, thereby causing damage to the product due to the impact applied during the operation. In addition, there is a problem that the shaft center of the pulley 130 and the shaft 140 is fixedly offset.

또한, 상기 풀리(130)와 샤프트(140) 그리고 테이퍼키(150)의 치수공차가 정밀해야하므로 가공이 어렵고, 조립 및 분해 작업 역시 작업자의 숙련도를 필요로 하기 때문에 작업공수의 증가와 생산성 저하 등의 문제점을 초래한다.In addition, since the tolerances of the dimensional tolerances of the pulley 130, the shaft 140, and the taper key 150 must be precise, the machining is difficult, and as the assembly and disassembly work also requires the skill of the operator, an increase in workmanship and productivity decrease, etc. Brings about the problem.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 창출된 것으로서, 본 발명의 목적은 테이퍼키와 같이 외부힘을 가하여 결속시키는 체결구조를 배제하면서 견고한 고정력과 조립 및 분해 작업성을 향상시킬 수 있는 공기조화기용 송풍장치의 풀리체결구조를 제공하는데 그 목적이 있다.The present invention was created to solve the above problems of the prior art, an object of the present invention can improve the rigid fixing force and assembly and disassembly workability while excluding the fastening structure to bind by applying an external force, such as a taper key. It is an object of the present invention to provide a pulley fastening structure of a blower for an air conditioner.

도 1은 종래 기술에 의한 송풍장치의 풀리체결구조를 나타낸 사시도이고,1 is a perspective view showing a pulley fastening structure of a blower according to the prior art,

도 2는 종래 기술에 의한 송풍장치의 풀리체결구조를 나타낸 단면도이고,2 is a cross-sectional view showing a pulley fastening structure of a blower according to the prior art,

도 3은 본 발명에 의한 송풍장치의 풀리체결구조를 나타낸 사시도이고,3 is a perspective view showing a pulley fastening structure of the blower according to the present invention;

도 4는 본 발명에 의한 송풍장치의 풀리체결구조를 나타낸 단면도이다.4 is a cross-sectional view showing a pulley fastening structure of the blower according to the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

1 : 송풍장치 2 : 전동기1 blower 2 electric motor

3 : 벨트 10 : 풀리3: belt 10: pulley

11 : 고정나사홈 12 : 고정나사11: set screw groove 12: set screw

13 : 좌측접촉부 14 : 우측접촉부13: left contact part 14: right contact part

20 : 샤프트 21 : 제1로드20: shaft 21: first rod

22 : 제2로드 23 : 제3로드22: second load 23: third load

24 : 고정홈 25 : 너트24: fixing groove 25: nut

상기한 과제를 실현하기 위한 본 발명은 송풍팬이 끼움고정되는 제1로드와, 상기 제1로드에서 연장되어 전동기와 벨트로 연결되는 풀리가 끼워지고, 외주면 일측에 고정홈이 형성되는 제2로드와, 상기 제2로드에서 연장되어 나사산이 형성되는 제3로드로 이루어지는 샤프트와, 상기 풀리 일측에 축과 수직방향으로 형성된 고정나사홈에 나사결합되고, 그 끝단부가 샤프트의 고정홈에 삽입되는 고정나사와, 상기 풀리가 축방향으로 이동되는 것을 제한하도록 제3로드와 나사결합되는 너트로 이루어진 것을 특징으로 한다.The present invention for realizing the above object is a first rod to which the blowing fan is fitted, and a pulley extending from the first rod connected to the electric motor and the belt is fitted, the second rod formed with a fixing groove on one side of the outer peripheral surface And a shaft formed of a third rod extending from the second rod to form a thread, and fixed to the fixing screw groove formed at one side of the pulley in a direction perpendicular to the shaft, the end of which is inserted into the fixing groove of the shaft. And a nut screwed with the third rod to restrict the pulley from moving in the axial direction.

이하, 첨부된 도면을 참조하여 본 발명의 일실시예를 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

도 3은 본 발명에 의한 송풍장치의 풀리체결구조를 나타낸 사시도이고, 도 4는 본 발명에 의한 송풍장치의 풀리체결구조를 나타낸 단면도이다.3 is a perspective view showing the pulley fastening structure of the blower according to the present invention, Figure 4 is a cross-sectional view showing the pulley fastening structure of the blower according to the present invention.

송풍장치(1)는 전원을 공급받아 소정의 구동력을 발생하는 전동기(2)와, 이 전동기(2)로부터 구동력을 전달받아 송풍작용을 수행하는 송풍팬(미도시)으로 이루어진다.The blower 1 includes an electric motor 2 that receives power and generates a predetermined driving force, and a blowing fan (not shown) that receives a driving force from the electric motor 2 and performs a blowing operation.

상기 송풍팬(미도시)에는 회전 샤프트(20)가 끼움결합되며, 이 샤프트(20)의 일단에는 풀리(10)가 고정되고, 이 풀리(10)는 전동기(2)와 벨트(3)로 연결되어 구동력을 전달받는다.A rotating shaft 20 is fitted to the blowing fan (not shown), and a pulley 10 is fixed to one end of the shaft 20, and the pulley 10 is driven by the electric motor 2 and the belt 3. Connected to receive the driving force.

여기서, 상기 풀리(10)와 샤프트(20)의 체결구조는 풀리(10)에 삽입된 샤프트(20)의 끝단부에 형성된 나사산에 너트(25)를 나사결합시켜 풀리(10)가 샤프트(20)로부터 축방향으로 이동되는 것을 제한하고, 상기 풀리(10)의 외측면에 형성된 고정나사홈(11)에 고정나사(12)를 나사결합시켜 그 선단부가 샤프트(20)의일측에 형성된 고정홈(23)에 위치되도록 하여 상기 풀리(10)와 샤프트(20)가 상호 회전방향의 결속력을 갖도록 한다.Here, the fastening structure of the pulley 10 and the shaft 20 is screwed to the nut 25 to the thread formed on the end of the shaft 20 inserted into the pulley 10 pulley 10 is the shaft 20 Restriction of movement in the axial direction from the (), screwing the fixing screw 12 to the fixing screw groove 11 formed on the outer surface of the pulley (10) fixed end formed on one side of the shaft 20 The position of the pulley 10 and the shaft 20 to have a binding force in the mutual rotation direction by being positioned at (23).

상기 풀리(10)는 샤프트(20)를 중심으로 원주방향의 고른 접촉력을 얻기 위하여 상기 샤프트(20)가 삽입되는 구멍 양쪽측면에 소정각도의 테이퍼가 형성된 좌측접촉(13)부 및 우측접촉부(14)가 형성된다.The pulley 10 has a left contact 13 portion and a right contact portion 14 having tapers of a predetermined angle formed on both sides of a hole into which the shaft 20 is inserted in order to obtain even contact force in the circumferential direction about the shaft 20. ) Is formed.

상기 샤프트(20)는 순차적으로 직경이 작아지도록 형성된 제1로드(21), 제2로드(22), 제3로드(23)로 이루어지며, 상기 제1로드(21)는 풀리(10)의 일측에 형성된 좌측접촉부(13)에 밀착되도록 대응하는 소정각도의 테이퍼가 형성된다.The shaft 20 is composed of a first rod 21, a second rod 22, a third rod 23 formed to sequentially decrease the diameter, the first rod 21 of the pulley 10 The taper of a predetermined angle is formed to be in close contact with the left contact portion 13 formed on one side.

그리고, 상기 제2로드(22)는 풀리(10)에 끼움결합되는 부위로서 그 끝단부의 외측면 소정위치에 일정 깊이를 갖는 고정홈(24)이 형성되고, 상기 제3로드(23)에는 너트(25)와의 나사결합을 위한 나사산이 형성된다.In addition, the second rod 22 is a part to be fitted to the pulley 10 is formed with a fixing groove 24 having a predetermined depth at a predetermined position on the outer surface of the end portion, the third rod 23 is a nut Threads for screwing with (25) are formed.

여기서, 상기 너트(25)는 상기 풀리(10)의 우측접촉부(14)에 밀착 결합되도록 동일 각도의 테이퍼가 형성된다.Here, the nut 25 is tapered at the same angle to be in close contact with the right contact portion 14 of the pulley 10.

이와 같이 이루어진 본 발명에 따른 공기조화기용 송풍장치의 풀리체결구조의 조립순서는 다음에서 설명한다.The assembly procedure of the pulley fastening structure of the blower for the air conditioner according to the present invention made as described above will be described below.

샤프트(20)의 제2로드(22)를 풀리(10)에 끼운 뒤, 풀리(10) 일측에 형성된 고정나사홈(11)으로 고정나사(12)를 삽입시킨다.After inserting the second rod 22 of the shaft 20 into the pulley 10, the fixing screw 12 is inserted into the fixing screw groove 11 formed at one side of the pulley 10.

이때, 상기 고정나사(12)는 풀리(10)가 샤프트(20)로부터 회전방향의 고정력을 받을수 있도록 하기 위한 것이므로 그 선단부가 샤프트(20)의 고정홈(24)에 위치되도록 삽입되는 것이 바람직하다.At this time, since the fixing screw 12 is to allow the pulley 10 to receive a fixing force in the rotational direction from the shaft 20, the front end portion is preferably inserted into the fixing groove 24 of the shaft 20. .

이어서, 상기 샤프트(20)의 제3로드(23)에 형성된 나사산에 너트(25)를 나사체결하여 풀리(10)의 축방향 이동을 제한한다.Subsequently, the nut 25 is screwed into the thread formed on the third rod 23 of the shaft 20 to limit the axial movement of the pulley 10.

즉, 상기 풀리(10)는 좌측 방향에 위치되는 샤프트(20)의 제1로드(21)에 접촉된 상태에서 제2로드(22)와 끼움결합되며, 이때 상기 풀리(10)의 우측 방향으로 나사산이 형성된 제3로드(23)가 돌출된다. 이어서, 상기 제3로드(23)에 너트(25)를 나사체결하면 풀리(10)가 샤프트(20)의 축방향으로 고정되는 것이다.That is, the pulley 10 is fitted with the second rod 22 in a state of being in contact with the first rod 21 of the shaft 20 located in the left direction, in this case the right direction of the pulley 10 The threaded third rod 23 protrudes. Subsequently, when the nut 25 is screwed into the third rod 23, the pulley 10 is fixed in the axial direction of the shaft 20.

또한, 상기 풀리(10)는 샤프트(20)가 끼움결합되는 구멍의 양측으로 소정각도의 테이퍼를 갖는 좌,우측접촉부(13),(14)가 형성되어 있으며, 이 좌,우측접촉부(13),(14)에 제1로드(21) 및 너트(25)가 대응하여 테이퍼 접촉을 이루므로 상기 풀리(10)는 원주방향으로 균일한 지지력을 받게 된다.In addition, the pulley 10 has left and right contact portions 13 and 14 having a tapered angle at both sides of the hole into which the shaft 20 is fitted, and the left and right contact portions 13 are formed. Since the first rod 21 and the nut 25 correspond to the tapered contact 14, the pulley 10 receives a uniform bearing force in the circumferential direction.

아울러, 상기에서 명시된 조립순서를 역순으로 할 경우에는 풀리(10)와 샤프트(20)를 분해시킬 수 있다.In addition, when the assembly order specified above is reversed, the pulley 10 and the shaft 20 may be disassembled.

이와 같이, 본 발명에 의한 공기조화기용 송풍장치의 풀리체결구조는 샤프트와 풀리 그리고, 너트가 상호 소정각도의 테이퍼 접촉을 하여 체결되므로 접촉면적이 증대되어 안정적인 동력전달을 유지할 수 있다.As described above, the pulley fastening structure of the blower for the air conditioner according to the present invention is coupled to the shaft, the pulley and the nut by a tapered contact with each other at an angle, thereby increasing the contact area and maintaining stable power transmission.

따라서, 제품의 불량률을 낮출수 있고, 아울러 조립 및 분해 작업이 용이하므로 작업공수의 단축을 꾀하여 생상성 향상을 도모할 수 있는 장점이 있다.Therefore, it is possible to lower the defective rate of the product, as well as easy assembly and disassembly work, there is an advantage that can improve the productivity by reducing the work man.

Claims (2)

송풍팬이 끼움고정되는 제1로드와, 상기 제1로드에서 연장되어 전동기와 벨트로 연결되는 풀리가 끼워지고, 외주면 일측에 고정홈이 형성되는 제2로드와, 상기 제2로드에서 연장되어 나사산이 형성되는 제3로드로 이루어지는 샤프트와;A first rod to which the blowing fan is fitted, a pulley extending from the first rod and connected to the electric motor and the belt is fitted, and a second rod having a fixing groove formed on one side of the outer circumferential surface thereof, and extending from the second rod A shaft comprising a third rod formed therein; 상기 풀리 일측에 축과 수직방향으로 형성된 고정나사홈에 나사결합되고, 그 끝단부가 샤프트의 고정홈에 삽입되는 고정나사와;A fixing screw which is screwed into a fixing screw groove formed in a direction perpendicular to the shaft on one side of the pulley and whose end portion is inserted into the fixing groove of the shaft; 상기 풀리가 축방향으로 이동되는 것을 제한하도록 제3로드와 나사결합되는 너트로 이루어진 것을 특징으로 하는 공기조화기용 송풍장치의 풀리체결구조.Pulley fastening structure of the blower for the air conditioner, characterized in that consisting of a nut screwed with the third rod to limit the movement of the pulley in the axial direction. 제 1항에 있어서,The method of claim 1, 상기 풀리는 샤프트가 삽입되는 구멍의 양쪽 끝단부에 소정각도의 테이퍼를 갖는 좌,우측접촉부가 형성되며, 상기 샤프트의 제1로드에는 좌측접촉부에 밀착되도록 동일 각도의 테이퍼가 형성되고, 상기 너트의 일측면에는 풀리의 우측접촉부에 밀착되도록 동일 각도의 테이퍼가 형성되어짐을 특징으로 하는 공기조화기용 송풍장치의 풀리체결구조.The pulley is formed at both ends of the hole in which the shaft is inserted, the left and the right contact portion having a taper of a predetermined angle, the first rod of the shaft is formed with a taper of the same angle to be in close contact with the left contact portion, the work of the nut Pulley fastening structure of the air conditioner blower, characterized in that the taper of the same angle is formed on the side to be in close contact with the right contact portion of the pulley.
KR1019990058329A 1999-12-16 1999-12-16 Pully mounting of blower for air conditioner KR20010056738A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190124117A (en) 2018-04-25 2019-11-04 주식회사 에스더블 테크 Air blower
KR102302215B1 (en) 2020-04-14 2021-09-13 고채식 Air blower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190124117A (en) 2018-04-25 2019-11-04 주식회사 에스더블 테크 Air blower
KR102302215B1 (en) 2020-04-14 2021-09-13 고채식 Air blower

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