KR102442332B1 - Water pump - Google Patents

Water pump Download PDF

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KR102442332B1
KR102442332B1 KR1020200107787A KR20200107787A KR102442332B1 KR 102442332 B1 KR102442332 B1 KR 102442332B1 KR 1020200107787 A KR1020200107787 A KR 1020200107787A KR 20200107787 A KR20200107787 A KR 20200107787A KR 102442332 B1 KR102442332 B1 KR 102442332B1
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South Korea
Prior art keywords
housing
cover
water pump
groove
electric water
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KR1020200107787A
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Korean (ko)
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KR20220027334A (en
Inventor
박종원
이창국
정연석
김현범
이다빈
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지엠비코리아 주식회사
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Priority to KR1020200107787A priority Critical patent/KR102442332B1/en
Publication of KR20220027334A publication Critical patent/KR20220027334A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/42Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00Working fluids
    • F05D2210/10Kind or type
    • F05D2210/11Kind or type liquid, i.e. incompressible
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00Manufacture
    • F05D2230/20Manufacture essentially without removing material
    • F05D2230/23Manufacture essentially without removing material by permanently joining parts together
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00Materials; Properties thereof
    • F05D2300/40Organic materials
    • F05D2300/43Synthetic polymers, e.g. plastics; Rubber

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

본 발명은 전동식 워터펌프에 대한 것으로서, 더욱 상세하게는 전동식 워터펌프의 하우징과 커버를 초음파 융착하여 볼트를 이용하지 않고 조립이 가능한 전동식 워터펌프에 대한 것이다.
본 발명에 따른 전동식 워터펌프는 하우징과, 상기 하우징의 내부에 장착된 로터 및 스테이터와, 상기 로터에 의해 회전할 수 있게 장착된 임펠러와, 상기 임펠러를 감싸도록 상기 하우징의 상부에 결합된 커버를 포함하는 전동식 워터펌프에 있어서, 상기 하우징은 상부의 상면에 제1홈이 형성되고, 상기 상부의 측면에 제2홈이 형성되고, 상기 커버는 축방향으로 초음파 가진되면 융착될 수 있도록 상기 상면과 접촉하는 하부면에 상기 제1홈에 삽입되는 제1돌기와, 상기 측면과 접촉하는 내측면에 상기 제2홈에 삽입되는 제2돌기가 형성된다.
본 발명에 의하면, 초음파를 통하여 커버의 돌기가 하우징의 홈에 서로 맞물려 융착결합된다. 이 경우, 볼트를 이용하지 않고도 조립이 가능하여 부품수를 줄일 수 있다. 그래서 원가를 절감할 수 있다.
또한, 본 발명에 의하면, 축방향으로만 초음파 가진하여 커버의 하부면은 하우징의 상면과 융착결합시키고, 커버의 내측면은 하우징의 측면과 융착결합시킨다. 이 경우, 공정과정은 간소화하고, 커버와 하우징의 결합력과 수밀성은 높일 수 있다.
The present invention relates to an electric water pump, and more particularly, to an electric water pump that can be assembled without using bolts by ultrasonically fusing a housing and a cover of the electric water pump.
The electric water pump according to the present invention comprises a housing, a rotor and a stator mounted inside the housing, an impeller mounted rotatably by the rotor, and a cover coupled to the upper portion of the housing to surround the impeller. In the electric water pump comprising: a first groove is formed on an upper surface of the housing, a second groove is formed on a side surface of the upper portion, and the cover is fused with the upper surface to be fused when ultrasonically excited in the axial direction. A first protrusion inserted into the first groove is formed on a contacting lower surface, and a second protrusion inserted into the second groove is formed on an inner surface in contact with the side surface.
According to the present invention, the projections of the cover are engaged with each other in the grooves of the housing through ultrasonic waves and are fusion-bonded. In this case, since assembly is possible without using bolts, the number of parts can be reduced. So the cost can be reduced.
In addition, according to the present invention, the lower surface of the cover is fusion-bonded with the upper surface of the housing by ultrasonic excitation only in the axial direction, and the inner surface of the cover is fusion-bonded with the side surface of the housing. In this case, the process may be simplified, and the coupling force and watertightness between the cover and the housing may be increased.

Description

전동식 워터펌프{Water pump}Electric water pump {Water pump}

본 발명은 전동식 워터펌프에 대한 것으로서, 더욱 상세하게는 전동식 워터펌프의 하우징과 커버를 초음파 융착하여 볼트를 이용하지 않고 조립이 가능한 전동식 워터펌프에 대한 것이다. The present invention relates to an electric water pump, and more particularly, to an electric water pump that can be assembled without using bolts by ultrasonically fusing a housing and a cover of the electric water pump.

일반적으로, 워터펌프는 엔진의 냉각 및 실내 난방을 위하여 엔진 및 히터에 냉각수를 순환시키기 위한 장치이다. 워터펌프에서 토출된 냉각수는 엔진, 히터, 또는 라디에이터와 열교환을 하며 워터펌프로 다시 유입되어 순환한다. 이러한 워터펌프는 크게 기계식 워터펌프와 전동식 워터펌프로 나누어 지는데, 엔진 냉각을 최적인 상태에서 컨트롤 하는 것이 가능하고, 엔진 주위의 구조를 간소화하여 차량 연비를 향상시키는 전동식 워터펌프가 널리 사용되고 있다. In general, a water pump is a device for circulating coolant to an engine and a heater for engine cooling and indoor heating. The coolant discharged from the water pump exchanges heat with the engine, heater, or radiator, and then flows back into the water pump and circulates. These water pumps are largely divided into mechanical water pumps and electric water pumps, and electric water pumps that can control engine cooling in an optimal state and improve vehicle fuel efficiency by simplifying the structure around the engine are widely used.

도 3에 도시된 종래의 워터펌프의 경우, 커버(3)가 하우징(1)의 상부에 볼트결합된다. 여기서 하우징(1)은 스틸재질로 형성되고, 커버(3)는 플라스틱재질로 형성된다. 이 경우, 종래의 워터펌프는 커버(3)가 하우징(1)과 결합하기 위하여 오링(7)과 볼트(5)가 사용되므로 부품수의 증대 및 결합력이 낮다는 문제점이 있었다. In the case of the conventional water pump shown in FIG. 3 , the cover 3 is bolted to the upper portion of the housing 1 . Here, the housing 1 is formed of a steel material, and the cover 3 is formed of a plastic material. In this case, since the conventional water pump uses the O-ring 7 and the bolt 5 to couple the cover 3 with the housing 1, there is a problem in that the number of parts increases and the coupling force is low.

등록특허 제10-1296393호 (등록일 2011.05.25)Registered Patent No. 10-1296393 (Registration Date 2011.05.25)

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 전동식 워터펌프의 하우징과 커버를 초음파 융착하여 볼트를 이용하지 않고 조립이 가능한 전동식 워터펌프를 제공하는 것을 목적으로 한다. The present invention is to solve the above problems. An object of the present invention is to provide an electric water pump that can be assembled without using bolts by ultrasonically welding a housing and a cover of the electric water pump.

또한, 본 발명은 강한 결합력과 수밀성을 확보할 수 있게 하우징과 커버를 결합할 수 있는 전동식 워터펌프를 제공하는 것을 목적으로 한다. Another object of the present invention is to provide an electric water pump capable of coupling a housing and a cover to secure a strong bonding force and watertightness.

본 발명에 따른 전동식 워터펌프는 하우징과, 상기 하우징의 내부에 장착된 로터 및 스테이터와, 상기 로터에 의해 회전할 수 있게 장착된 임펠러와, 상기 임펠러를 감싸도록 상기 하우징의 상부에 결합된 커버를 포함하는 전동식 워터펌프에 있어서, 상기 하우징은 상부의 상면에 제1홈이 형성되고, 상기 상부의 측면에 제2홈이 형성되고, 상기 커버는 축방향으로 초음파 가진되면 융착될 수 있도록 상기 상면과 접촉하는 하부면에 상기 제1홈에 삽입되는 제1돌기와, 상기 측면과 접촉하는 내측면에 상기 제2홈에 삽입되는 제2돌기가 형성된다. The electric water pump according to the present invention comprises a housing, a rotor and a stator mounted inside the housing, an impeller mounted rotatably by the rotor, and a cover coupled to the upper portion of the housing to surround the impeller. In the electric water pump comprising: a first groove is formed on an upper surface of the housing, a second groove is formed on a side surface of the upper portion, and the cover is fused with the upper surface to be fused when ultrasonically excited in the axial direction. A first protrusion inserted into the first groove is formed on a contacting lower surface, and a second protrusion inserted into the second groove is formed on an inner surface in contact with the side surface.

또한, 상기의 전동식 워터펌프에 있어서, 상기 하우징 및 상기 커버는 플라스틱재질로 형성되는 것이 바람직하다. In addition, in the electric water pump, the housing and the cover are preferably formed of a plastic material.

본 발명에 의하면, 초음파를 통하여 커버의 돌기가 하우징의 홈에 서로 맞물려 융착결합된다. 이 경우, 볼트를 이용하지 않고도 조립이 가능하여 부품수를 줄일 수 있다. 그래서 원가를 절감할 수 있다. According to the present invention, the projections of the cover are engaged with each other in the grooves of the housing through ultrasonic waves and are fusion-bonded. In this case, since assembly is possible without using bolts, the number of parts can be reduced. So the cost can be reduced.

또한, 본 발명에 의하면, 축방향으로만 초음파 가진하여 커버의 하부면은 하우징의 상면과 융착결합시키고, 커버의 내측면은 하우징의 측면과 융착결합시킨다. 이 경우, 공정과정은 간소화하고, 커버와 하우징의 결합력과 수밀성을 높일 수 있다. In addition, according to the present invention, the lower surface of the cover is fusion-bonded with the upper surface of the housing by ultrasonic excitation only in the axial direction, and the inner surface of the cover is fusion-bonded with the side surface of the housing. In this case, the process may be simplified, and the coupling force and watertightness between the cover and the housing may be increased.

도 1은 본 발명에 따른 전동식 워터펌프의 일 실시예의 단면도이고,
도 2는 도 1에 도시된 실시예의 A부분의 확대도이고,
도 3은 종래의 전동식 워터펌프의 단면도이다.
1 is a cross-sectional view of an embodiment of an electric water pump according to the present invention;
Figure 2 is an enlarged view of part A of the embodiment shown in Figure 1,
3 is a cross-sectional view of a conventional electric water pump.

도 1 및 도 2를 참조하여 본 발명에 따른 전동식 워터펌프의 일 실시예를 설명한다. An embodiment of an electric water pump according to the present invention will be described with reference to FIGS. 1 and 2 .

본 발명의 일 실시예에 따른 전동식 워터펌프(100)는 하우징(10)과, 로터(15)와, 스테이터(20)와, 임펠러(30) 및 커버(35)를 포함한다. The electric water pump 100 according to an embodiment of the present invention includes a housing 10 , a rotor 15 , a stator 20 , an impeller 30 , and a cover 35 .

하우징(10)은 내부에 로터(15)와 스테이터(20)를 수용한다. 여기서 하우징(10)은 커버(35)와 결합되는 상부의 상면(10a)에 제1홈(11)이 형성되고, 상부의 측면(10b)에 제2홈(13)이 형성된다. 이때, 하우징(10)은 플라스틱재질로 형성된다. The housing 10 accommodates the rotor 15 and the stator 20 therein. Here, in the housing 10, a first groove 11 is formed on an upper surface 10a of an upper portion coupled to the cover 35, and a second groove 13 is formed on a side surface 10b of the upper portion. At this time, the housing 10 is formed of a plastic material.

로터(15)는 하우징(10)의 내부에 설치되고, 하단이 하우징(10)의 중앙 하부에 고정된 샤프트(25)에 고정결합되어 회전한다. The rotor 15 is installed inside the housing 10 , and the lower end is fixedly coupled to the shaft 25 fixed to the lower center of the housing 10 and rotates.

스테이터(20)는 하우징(10)의 내부에 수용되어 고정 설치되고, 전기적 신호에 따라 로터(15)를 회전시킨다. The stator 20 is received and fixedly installed in the housing 10 , and rotates the rotor 15 according to an electrical signal.

임펠러(30)는 워터펌프(100)로 유입되는 유체를 순환시키는 역할을 한다. 이를 위하여 임펠러(30)는 로터(15)에 의해 회전할 수 있도록 샤프트(25)에 장착된다. The impeller 30 circulates the fluid flowing into the water pump 100 . To this end, the impeller 30 is mounted on the shaft 25 so as to be rotated by the rotor 15 .

커버(35)는 임펠러(30)를 감싸도록 하우징(10)의 상부에 결합된다. 여기서 커버(35)는 하부면(35a)에 하우징(10)의 제1홈(11)에 삽입되는 제1돌기(36)가 형성되고, 내측면(35b)에 하우징(10)의 제2홈(13)에 삽입되는 제2돌기(38)가 형성된다. 이때, 제1돌기(36) 및 제2돌기(38)는 축방향으로 초음파 가진되면 제1홈(11) 및 제2홈(13)과 마찰에 의하여 융착하여 제1홈(11) 및 제2홈(13)에 채워져서 결합될 수 있도록 돌기되어야 한다. 즉, 제1돌기(36)는 제1홈(11)에 삽입되도록 축방향으로 돌출되고, 제2돌기(38)는 제2홈(13)에 삽입되도록 원심방향으로 돌출되어 단부가 축방향을 향하도록 형성된다. 그래서 제1돌기(36)는 제1홈(11)에 삽입되고, 제2돌기(38)는 제2홈(13)에 삽입되도록 커버(35)를 하우징(10)에 위치시킨 후, 축방향으로 초음파 가진하면 제1돌기(36) 및 제2돌기(38)가 제1홈(11) 및 제2홈(13)의 내부에서 마찰에 의하여 용융되어 하우징(10)과 커버(35)는 융착결합된다. 이때, 커버(35)는 플라스틱재질로 형성된다. The cover 35 is coupled to the upper portion of the housing 10 so as to surround the impeller 30 . Here, the cover 35 is formed with a first protrusion 36 inserted into the first groove 11 of the housing 10 on the lower surface 35a, and the second groove of the housing 10 is formed on the inner surface 35b. A second protrusion 38 inserted in (13) is formed. At this time, when the first protrusion 36 and the second protrusion 38 are ultrasonically excited in the axial direction, they are fused with the first groove 11 and the second groove 13 by friction to form the first groove 11 and the second projection 38 . It should be filled in the groove 13 and protrude so that it can be coupled. That is, the first protrusion 36 protrudes in the axial direction to be inserted into the first groove 11 , and the second protrusion 38 protrudes in the centrifugal direction so as to be inserted into the second groove 13 so that the end thereof is inserted in the axial direction. formed to face So, the first protrusion 36 is inserted into the first groove 11 , and the cover 35 is placed on the housing 10 so that the second protrusion 38 is inserted into the second groove 13 , and then in the axial direction. When the ultrasonic excitation is performed, the first protrusion 36 and the second protrusion 38 are melted by friction inside the first groove 11 and the second groove 13, so that the housing 10 and the cover 35 are fused. are combined At this time, the cover 35 is formed of a plastic material.

본 실시예의 경우, 하우징(10)과 커버(35)는 각각 금형을 이용하여 사출성형으로 제조된 후, 초음파 융착법을 통해 일체로 접합하게 된다. 커버(35)의 제1돌기(36)는 하우징(10)의 제1홈(11)에 삽입하고, 커버(35)의 제2돌기(38)는 하우징(10)의 제2홈(13)에 삽입하여 조립한다. 하우징(10)과 커버(35)가 조립되면, 축방향으로 초음파 진동에지를 전달받은 하우징(10)과 커버(35)의 접합된 홈(11,13)과 돌기(36,38)에서 순간적으로 마찰열이 발생하고, 돌기(36,38)가 용융되어 융착결합된다. 이 경우, 볼트를 이용하지 않고도 조립이 가능하여 부품수를 줄일 수 있다. 그래서 원가를 절감할 수 있다. 또한, 축방향으로만 초음파 가진하여 커버(35)의 하부면(35a)은 하우징(10)의 상면(10a)과 융착결합시키고, 커버(35)의 내측면(35b)은 하우징(10)의 측면(10b)과 융착결합시킨다. 이 경우, 공정과정은 간소화하고, 커버(35)와 하우징(10)의 결합력과 수밀성을 높일 수 있다. In the case of this embodiment, the housing 10 and the cover 35 are each manufactured by injection molding using a mold, and then integrally joined through an ultrasonic welding method. The first protrusion 36 of the cover 35 is inserted into the first groove 11 of the housing 10 , and the second protrusion 38 of the cover 35 is inserted into the second groove 13 of the housing 10 . Insert and assemble When the housing 10 and the cover 35 are assembled, in the grooves 11 and 13 and the protrusions 36 and 38 joined to the housing 10 and the cover 35 receiving the ultrasonic vibration edge in the axial direction, the Frictional heat is generated, and the projections 36 and 38 are melted and fusion-bonded. In this case, since assembly is possible without using bolts, the number of parts can be reduced. So the cost can be reduced. In addition, by ultrasonic excitation only in the axial direction, the lower surface 35a of the cover 35 is fusion-bonded with the upper surface 10a of the housing 10 , and the inner surface 35b of the cover 35 is the housing 10 . It is fusion-bonded with the side surface (10b). In this case, the process may be simplified, and the coupling force and watertightness of the cover 35 and the housing 10 may be increased.

반면, 도 3에 도시된 종래의 워터펌프의 경우, 커버(3)가 하우징(1)의 상부에 볼트결합된다. 여기서 하우징(1)은 스틸재질로 형성되고, 커버(3)는 플라스틱재질로 형성된다. 이 경우, 종래의 워터펌프는 커버(3)가 하우징(1)과 결합하기 위하여 오링(7)과 볼트(5)가 사용되므로 부품수의 증대 및 수밀성이 낮다는 문제점이 있었다. On the other hand, in the case of the conventional water pump shown in FIG. 3 , the cover 3 is bolted to the upper portion of the housing 1 . Here, the housing 1 is formed of a steel material, and the cover 3 is formed of a plastic material. In this case, the conventional water pump has problems in that the O-ring 7 and the bolt 5 are used to couple the cover 3 to the housing 1, so that the number of parts increases and water tightness is low.

1 : 하우징 3 : 커버
5 : 볼트 7 : 오링
10 : 하우징 10a : 상면
10b : 측면 11 : 제1홈
13 : 제2홈 15 : 로터
20 : 스테이터 25 : 샤프트
30 : 임펠러 35 : 커버
35a : 하부면 35b: 내측면
36 : 제1돌기 38 : 제2돌기
100 : 워터펌프
1: housing 3: cover
5: Bolt 7: O-ring
10: housing 10a: upper surface
10b: side 11: first groove
13: second groove 15: rotor
20: stator 25: shaft
30: impeller 35: cover
35a: lower surface 35b: inner surface
36: first projection 38: second projection
100: water pump

Claims (2)

하우징과, 상기 하우징의 내부에 장착된 로터 및 스테이터와, 상기 로터에 의해 회전할 수 있게 장착된 임펠러와, 상기 임펠러를 감싸도록 상기 하우징의 상부에 결합된 커버를 포함하는 전동식 워터펌프에 있어서,
상기 하우징은 상부의 상면에 제1홈이 형성되고, 상기 상부의 측면에 제2홈이 형성되고,
상기 커버는 축방향으로 초음파 가진되면 융착될 수 있도록 상기 상면과 접촉하는 하부면에 상기 제1홈에 삽입되도록 축방향으로 돌출된 제1돌기와, 상기 측면과 접촉하는 내측면에 상기 제2홈에 삽입되도록 원심방향으로 돌출되어 단부가 축방향을 향하는 제2돌기가 형성되는 것을 특징으로 하는 전동식 워터펌프.
In the electric water pump comprising a housing, a rotor and a stator mounted inside the housing, an impeller rotatably mounted by the rotor, and a cover coupled to an upper portion of the housing to surround the impeller,
A first groove is formed in the upper surface of the housing, and a second groove is formed in a side surface of the upper portion,
The cover has a first protrusion protruding in the axial direction to be inserted into the first groove on the lower surface in contact with the upper surface so as to be fusion-bonded when ultrasonically excited in the axial direction, and the second groove on the inner surface in contact with the side surface. Electric water pump, characterized in that the second protrusion protrudes in the centrifugal direction so as to be inserted and the end faces in the axial direction is formed.
제1항에 있어서,
상기 하우징 및 상기 커버는 플라스틱재질로 형성되는 것을 특징으로 하는 전동식 워터펌프.
According to claim 1,
The electric water pump, characterized in that the housing and the cover are formed of a plastic material.
KR1020200107787A 2020-08-26 2020-08-26 Water pump KR102442332B1 (en)

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