KR101284292B1 - Motor housing for electric vehicle and manufacturing method thereof - Google Patents

Motor housing for electric vehicle and manufacturing method thereof Download PDF

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Publication number
KR101284292B1
KR101284292B1 KR1020110033608A KR20110033608A KR101284292B1 KR 101284292 B1 KR101284292 B1 KR 101284292B1 KR 1020110033608 A KR1020110033608 A KR 1020110033608A KR 20110033608 A KR20110033608 A KR 20110033608A KR 101284292 B1 KR101284292 B1 KR 101284292B1
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South Korea
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housing body
electric vehicle
seating portion
housing
ring seating
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KR1020110033608A
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Korean (ko)
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KR20120116079A (en
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김경하
이시중
손상철
김민성
제해천
김연호
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기아자동차주식회사
현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/05—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/60—Electric Machines, e.g. motors or generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

본 발명은 하이브리드 형태를 포함하는 전기자동차의 모터하우징의 냉각유가 외부로 유출되지 않도록 주조 및 가공된 전기자동차의 모터하우징 및 그 제조방법에 관한 것이다.The present invention relates to a motor housing of an electric vehicle cast and processed so that the cooling oil of the motor housing of the electric vehicle including the hybrid form does not leak to the outside and a method of manufacturing the same.

Description

전기자동차의 모터하우징 및 그 제조방법 {MOTOR HOUSING FOR ELECTRIC VEHICLE AND MANUFACTURING METHOD THEREOF}Motor housing and manufacturing method of electric vehicle {MOTOR HOUSING FOR ELECTRIC VEHICLE AND MANUFACTURING METHOD THEREOF}

본 발명은 하이브리드 형태를 포함하는 전기자동차의 모터하우징의 냉각유가 외부로 유출되지 않도록 주조 및 가공된 전기자동차의 모터하우징 및 그 제조방법에 관한 것이다.The present invention relates to a motor housing of an electric vehicle cast and processed so that the cooling oil of the motor housing of the electric vehicle including the hybrid form does not leak to the outside and a method of manufacturing the same.

친환경적인 차량이 요구됨에 따라 최근 전기자동차에 관한 연구가 많이 이루어지고 그러한 차량들이 점차 실용화되어가고 있다. 전기자동차는 기존의 내연기관을 이용하여 동력을 얻는 것이 아니라, 내연기관과 함께 또는 단독으로 전기에 의하여만 구동되는 차량이다. 이러한 전기자동차에는 기존의 내연기관과 함께 배터리와 모터를 이용하는 하이브리드 전기자동차, 연료전지 전기자동차 등이 있다.As environmentally friendly vehicles are required, many studies on electric vehicles have recently been made, and such vehicles are becoming more practical. An electric vehicle is a vehicle that is driven only by electricity together with or alone with an internal combustion engine, instead of obtaining power using an existing internal combustion engine. Such electric vehicles include hybrid electric vehicles and fuel cell electric vehicles using batteries and motors together with existing internal combustion engines.

이러한 전기자동차는 동력으로서 배터리와 모터를 이용하기 때문에 친환경적이고 그러한 차량의 에너지효율을 높이기 위해 각 구성의 경량화가 주요 목표로 기술개발이 이루어지고 있다.Since electric vehicles use batteries and motors as power, technology development is being made with the main goal of reducing the weight of each component in order to be environmentally friendly and to increase energy efficiency of such vehicles.

차량의 경량화 측면에서는 알루미늄 다이캐스팅 합금이 주목받고 있는데, 기존의 주철재 합금에 비해 많은 경량화가 이루어지고 있는 것이 현실이다. 그러나 이러한 알루미늄 다이캐스팅의 경우 주조 과정에서 발생되는 모재 내부의 기공이나 균열들이 발전하여 소재 자체의 크랙이나 리크 현상을 유발할 수 있는바, 소재의 설계 단계에서 이를 회피할 수 있는 기술이 절실히 요구되고 있다.Aluminum die-casting alloys are attracting attention in terms of weight reduction of vehicles, and the reality is that much weight reduction is achieved compared to existing cast iron alloys. However, in the case of aluminum die casting, pores or cracks in the base material generated in the casting process may develop to cause cracks or leaks in the material itself, and thus a technology for avoiding this in the design stage of the material is urgently required.

특히, 전기자동차의 경우 동력원으로 사용되는 모터의 하우징을 알루미늄 다이캐스팅으로 적용하는 기술이 시도되고 있는데, 그러한 모터 하우징의 경우에도 마찬가지로 하우징의 설계를 어떻게 하느냐에 따라 소재의 균열이나 파손을 미연에 방지할 수 있게 된다. 구체적으로, 전기자동차의 모터 하우징에는 모터가 수납되면서 하우징과 모터의 사이에 냉각유를 주입하여 모터를 냉각하게 되는데, 소재의 균열시 그러한 냉각유가 외부로 유출되어 리크되는 현상이 연구과정에서 빈번하게 발생되었는바, 이러한 크랙이나 리크 현상을 하우징의 설계를 통해 방지할 수 있는 방안이 필요하였다.In particular, in the case of electric vehicles, a technique of applying a die-casting of a housing of a motor used as a power source has been tried. In the case of such a motor housing, a crack or damage of a material can be prevented depending on how the housing is designed. Will be. Specifically, while the motor is accommodated in the motor housing of the electric vehicle, the cooling oil is injected between the housing and the motor to cool the motor. When the material is cracked, the phenomenon that such cooling oil leaks to the outside is frequently leaked during the research process. As a result, there was a need for a method for preventing such cracks and leaks through the design of the housing.

상기의 배경기술로서 설명된 사항들은 본 발명의 배경에 대한 이해 증진을 위한 것일 뿐, 이 기술분야에서 통상의 지식을 가진자에게 이미 알려진 종래기술에 해당함을 인정하는 것으로 받아들여져서는 안 될 것이다.The matters described as the background art are only for the purpose of improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the related art already known to those skilled in the art.

본 발명은 이러한 문제점을 해결하기 위하여 제안된 것으로, 모터 하우징의 설계를 모재의 트랙 및 리크 현상을 방지할 수 있도록 하여 모터 냉각유의 유출을 방지할 수 있는 전기자동차의 모터하우징 및 그 제조방법을 제공하는데 목적이 있다.
The present invention has been proposed to solve the above problems, and provides a motor housing of the electric vehicle and a method of manufacturing the same that can prevent the leakage of the motor cooling oil by making the design of the motor housing to prevent the track and leakage of the base material. The purpose is to.

상기의 목적을 달성하기 위한 본 발명에 따른 전기자동차의 모터하우징은, 내측에 모터가 삽입되는 공간부가 형성된 하우징 몸체; 상기 하우징 몸체의 상단부에 형성되며 마운팅을 위한 탭핑홀이 형성된 플렌지부; 상기 하우징 몸체의 둘레면을 관통하는 냉각유 유입구 및 유출구; 및 상기 하우징 몸체의 내측면 둘레를 따라 일정한 두께로 가공되되 상기 냉각유 유입구와 유출구를 사이에 두도록 한 쌍으로 가공되는 상부 오링안착부 및 하부 오링안착부;를 포함하고, 상기 상부 오링안착부는 그 상단이 플렌지부의 하단과 일정 높이 이격되도록 형성되도록 할 수 있다.Motor housing of the electric vehicle according to the present invention for achieving the above object, the housing body is formed with a space in which the motor is inserted; A flange formed on an upper end of the housing body and having a tapping hole for mounting; Cooling oil inlet and outlet through the circumferential surface of the housing body; And an upper o-ring seating portion and a lower o-ring seating portion which are processed to a predetermined thickness along the inner circumference of the housing body, and are processed in a pair so as to sandwich the cooling oil inlet and the outlet therebetween. The upper end may be formed to be spaced apart from the lower end of the flange portion by a predetermined height.

상기 하우징 몸체는 상부 및 하부 오링안착부가 형성된 부분의 측면 두께가 다른 부분의 측면 두께보다 두껍게 형성될 수 있다.The housing body may have a lateral thickness of a portion where the upper and lower O-ring seats are formed to be thicker than the lateral thickness of other portions.

상기 하우징 몸체는 내측면이 계단식으로 그 내경이 좁아지도록 형성될 수 있다.The housing body may be formed such that an inner surface thereof is narrowed in a stepped manner.

상기 하우징 몸체는 상부 및 하부 오링안착부가 형성된 부분의 측면 두께가 다른 부분의 측면 두께보다 2 ~ 3 mm 두껍게 형성될 수 있다.The housing body may have a side thickness of a portion in which the upper and lower O-ring seats are formed 2 to 3 mm thicker than the side thickness of the other portion.

상기 하우징 몸체는 측면의 내경과 외경이 계단식으로 좁아지도록 형성될 수 있다.The housing body may be formed such that the inner and outer diameters of the side surfaces are narrowed stepwise.

상기 하우징 몸체는, 내측면은 상부내측면, 중앙내측면 및 하부내측면으로, 외측면은 상부외측면 및 하부외측면으로 각각 계단식으로 구분되도록 주조될 수 있다.The housing body, the inner surface may be cast so as to be divided stepwise into the upper inner surface, the central inner surface and the lower inner surface, the outer surface is the upper outer surface and the lower outer surface, respectively.

상기 상부 오링안착부는 중앙내측면의 상단에 가공되고 하부 오링안착부는 하부내측면의 상단에 가공되며, 상기 하우징 몸체의 외측면은 상부 오링안착부의 하단 지점에서 상부외측면과 하부외측면이 구분되도록 형성될 수 있다.The upper O-ring seat is processed at the upper end of the central inner surface and the lower O-ring seat is processed at the upper end of the lower inner surface, the outer surface of the housing body is separated so that the upper outer surface and the lower outer surface at the lower end of the upper O-ring seat Can be formed.

상기 냉각유 유입구 및 유출구는 상기 중앙내측면 지점에 하우징 몸체를 관통하도록 형성될 수 있다.The cooling oil inlet and outlet may be formed to penetrate the housing body at the central inner side point.

상기 하우징 몸체는 알루미늄 합금일 수 있다.The housing body may be an aluminum alloy.

한편, 본 발명에 따른 전기자동차의 모터하우징 제조방법은, 하우징 몸체의 상단부에 마운팅을 위한 플렌지부를 형성하고, 하우징 몸체의 내측면은 상부내측면, 중앙내측면 및 하부내측면으로, 외측면은 상부외측면 및 하부외측면으로 내경과 외경이 각각 계단식으로 구분되며 좁아지도록 하우징 몸체를 주조하는 주조단계; 상기 하우징 몸체의 중앙내측면 상단에 상부 오링안착부를 가공하되, 상부 오링안착부의 상단이 상기 플렌지부의 하단과 일정 높이 이격되도록 가공하는 상부가공단계; 및 상기 하우징 몸체의 하부내측면의 상단에 하부 오링안착부를 가공하는 하부가공단계;를 포함할 수 있다.On the other hand, the motor housing manufacturing method of the electric vehicle according to the present invention, forming a flange portion for mounting on the upper end of the housing body, the inner surface of the housing body to the upper inner surface, the central inner surface and the lower inner surface, the outer surface is A casting step of casting the housing body so that the inner diameter and the outer diameter are respectively divided into a cascade and narrowed to an upper outer side and a lower outer side; An upper processing step of processing an upper O-ring seating portion at an upper end of a central inner side of the housing body, and processing an upper end of the upper O-ring seating portion to be spaced apart from a lower end by the flange portion; And a lower processing step of processing a lower O-ring seating portion on an upper end of a lower inner side surface of the housing body.

상기 상부가공단계 및 하부가공단계는, 하우징 몸체의 측면 두께 중 상부 오링안착부 및 하부 오링안착부가 가공된 지점의 두께가 중앙내측면 지점의 두께보다 두껍게 형성되도록 가공하도록 할 수 있다.The upper processing step and the lower processing step, the thickness of the point where the upper O-ring seating portion and the lower O-ring seating portion of the side thickness of the housing body can be processed to be formed thicker than the thickness of the central inner surface point.

상술한 바와 같은 구조로 이루어진 전기자동차의 모터하우징 및 그 제조방법에 따르면, 하우징의 냉각유가 주입되는 부분의 오링이 장착되는 가공부를 기타 가공부와 이격시킴으로써 크랙이 발전되어 냉각유가 리크 될 수 있는 가능성을 줄일 수 있다.According to the motor housing of the electric vehicle having the above-described structure and a method of manufacturing the same, the possibility of crack generation and leakage of the cooling oil may be generated by separating the processing part on which the O-ring of the part into which the cooling oil is injected is mounted from other processing parts. Can be reduced.

또한, 오링이 장착되는 가공부를 다른 소재부분보다 두껍게 형성하고 가공되는 부분을 최소화함으로써 하우징의 크랙이 발생되는 현상을 방지할 수 있게 된다.In addition, it is possible to prevent the phenomenon that the crack of the housing is formed by forming a processing portion on which the O-ring is mounted thicker than other material portions and minimizing the processing portion.

도 1은 본 발명의 일 실시예에 따른 전기자동차의 모터하우징의 내부 사시도.
도 2는 도 1에 도시된 전기자동차의 모터하우징의 A-A 선을 따라 절개한 단면도.1 is a perspective view of the inside of the motor housing of the electric vehicle according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line AA of the motor housing of the electric vehicle shown in FIG.

이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시 예에 따른 전기자동차의 모터하우징 및 그 제조방법에 대하여 살펴본다.Hereinafter, with reference to the accompanying drawings looks at with respect to the motor housing and the manufacturing method of the electric vehicle according to an embodiment of the present invention.

도 1은 본 발명의 일 실시예에 따른 전기자동차의 모터하우징의 내부 사시도이고, 도 2는 도 1에 도시된 전기자동차의 모터하우징의 A-A 선을 따라 절개한 단면도이다.1 is a perspective view of the inside of the motor housing of the electric vehicle according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line A-A of the motor housing of the electric vehicle shown in FIG.

본 발명에서 언급되는 전기자동차는 상기에서 설명한 바와 같이, 하이브리드 전기자동차, 연료전지 전기자동차 등 전기적인 모터를 이용하여 구동하는 모든 차량을 포함하는 개념으로 이해될 수 있다.As described above, the electric vehicle referred to in the present invention may be understood as a concept including all vehicles driven by using an electric motor such as a hybrid electric vehicle and a fuel cell electric vehicle.

본 발명의 전기자동차의 모터하우징은, 내측에 모터가 삽입되는 공간이 형성된 하우징 몸체(100); 상기 하우징 몸체(100)의 상단부에 형성되며 마운팅을 위한 탭핑홀(122)이 형성된 플렌지부(120); 상기 하우징 몸체(100)의 둘레면을 관통하는 냉각유 유입구(320) 및 유출구(340); 및 상기 하우징 몸체(100)의 내측면 둘레를 따라 일정한 두께로 가공되되 상기 냉각유 유입구(320)와 유출구(340)를 사이에 두도록 한 쌍으로 가공되는 상부 오링안착부(262) 및 하부 오링안착부(272);를 포함하고, 상기 상부 오링안착부(262)는 그 상단이 플렌지부(120)의 하단과 일정 높이 이격되도록 형성된 것을 특징으로 할 수 있다.Motor housing of the electric vehicle of the present invention, the housing body 100 is formed a space in which the motor is inserted; A flange portion 120 formed at an upper end of the housing body 100 and having a tapping hole 122 for mounting; Cooling oil inlet 320 and outlet 340 penetrating the circumferential surface of the housing body 100; And an upper o-ring seating portion 262 and a lower o-ring seating, which are processed to have a predetermined thickness along the inner circumference of the housing body 100 and are processed in a pair so as to sandwich the cooling oil inlet 320 and the outlet 340 therebetween. It includes; 272, the upper O-ring seating portion 262 may be characterized in that the upper end is formed so as to be spaced apart from the lower end of the flange portion 120 by a predetermined height.

구체적으로, 상기 모터하우징의 하우징 몸체(100)는 알루미늄 다이캐스팅 합금으로 할 수 있는데, 이러한 알루미늄 다이캐스팅 합금의 경우 모재 자체의 내부 기공이 크랙으로 발전할 수 있고, 그러한 크랙은 주조 후 후가공에 의해 많이 발생된다. 또한, 가공부가 서로 인접해 있는 경우 후가공시 그러한 가공부 사이의 기공이 서로 크랙으로 연결될 가능성이 증대됨을 알 수 있었다. 따라서, 모터하우징을 알루미늄 다이캐스팅으로 주조할 경우에는 주조 후 후가공 되는 부분을 가능한 서로 이격시킬 필요가 있고, 그에 따라 소재의 크랙을 형상 자체의 독특한 설계에 따라 방지할 수 있으며, 자연적으로 냉각유의 리크 현상을 개선할 수 있는 것이다.Specifically, the housing body 100 of the motor housing may be made of an aluminum die casting alloy. In the case of such an aluminum die casting alloy, internal pores of the base material itself may develop into cracks, and such cracks are generated by post-processing after casting. do. In addition, when the processing parts are adjacent to each other, it was found that the possibility of the pores between the processing parts connected to each other during post-processing increases. Therefore, when casting the motor housing by aluminum die casting, it is necessary to separate the parts to be processed after casting as much as possible, thereby preventing the crack of the material according to the unique design of the shape itself, and naturally the phenomenon of cooling oil leakage. It can be improved.

하우징 몸체(100)는 내측에 모터가 삽입되는 공간이 형성된다. 그러한 하우징 몸체(100)의 상단부에는 마운팅을 위한 탭핑홀(122)이 형성된 플렌지부(120)가 형성된다. 이들은 모두 주조과정에서 일체로 플렌지부(120)가 형성된 후 탭핑홀(122)이 후가공으로 형성될 수 있다. 또한, 하우징 몸체(100)의 둘레면을 관통하는 냉각유 유입구(320) 및 유출구(340)가 형성된다. 그리고, 그러한 냉각유의 실링을 위해 오링안착부(262,272)가 가공된다.The housing body 100 has a space in which a motor is inserted. The flange 120 having the tapping hole 122 for mounting is formed at the upper end of the housing body 100. All of these may be formed after the flange portion 120 is integrally formed in the casting process, the tapping hole 122 is post-processed. In addition, the cooling oil inlet 320 and the outlet 340 penetrating the circumferential surface of the housing body 100 is formed. Then, the O-ring seats 262 and 272 are processed to seal the cooling oil.

오링안착부는, 상기 하우징 몸체(100)의 내측면 둘레를 따라 일정한 두께로 가공되되 상기 냉각유 유입구(320)와 유출구(340)를 사이에 두도록 한 쌍으로 가공되어 상부 오링안착부(262) 및 하부 오링안착부(272)로 구성된다. 이러한 오링안착부(262,272)를 냉각유의 유로 상단과 하단에만 부분적으로 가공함으로써 전체적인 소재의 가공부위를 감소시킬 수 있고, 그에 따라 소재의 크랙 발생률을 현저히 낮출 수 있었다.O-ring seating part is processed to a predetermined thickness along the inner circumference of the housing body 100, but is processed in a pair so as to sandwich the cooling oil inlet 320 and the outlet 340, the upper O-ring seating portion 262 and It consists of a lower O-ring seating portion 272. Partial machining of the O-ring seats 262 and 272 only at the top and bottom of the flow path of the cooling oil can reduce the processing area of the overall material, thereby significantly reducing the crack incidence of the material.

한편, 상기 상부 오링안착부(262)는 그 상단이 플렌지부(120)의 하단과 일정 높이 이격되도록 형성됨으로써, 두 가공부가 서로 이격되도록 구성되어 가공부 사이에서 크랙이 연결되어 발전될 가능성이 현저히 줄어들었으며, 특히, 플렌지부(120)에는 탭핑홀(122)이 형성되는 만큼, 상부 오링안착부(262)에서 탭핑홀(122)로 크랙이 발전되어 냉각유가 탭핑홀(122)을 타고 외부로 유출될 개연성이 희박해진 것이다.On the other hand, the upper O-ring seating portion 262 is formed so that the upper end is spaced apart from the lower end of the flange portion 120 by a certain height, the two processing parts are configured to be spaced apart from each other so that the possibility that the cracks are connected between the processing parts to generate power significantly. In particular, as the tapping hole 122 is formed in the flange portion 120, cracks are developed from the upper O-ring seating portion 262 to the tapping hole 122 so that the coolant flows out of the tapping hole 122. The probability of spillage is slim.

또한, 상기 하우징 몸체(100)는 상부 및 하부 오링안착부(262,272)가 형성된 부분의 측면 두께(D1,D3)가 다른 부분의 측면 두께보다 두껍게 형성될 수 있다. 이를 위해 상기 하우징 몸체(100)는 내측면이 계단식으로 그 내경이 점차 좁아지도록 형성될 수 있고, 측면의 내경과 외경이 계단식으로 좁아지도록 형성될 수 있다. In addition, the housing body 100 may have a side thickness (D1, D3) of the upper and lower O-ring seating portion (262,272) is formed thicker than the side thickness of the other portion. To this end, the housing body 100 may be formed such that its inner diameter gradually narrows in an inner side, and may be formed so that its inner diameter and outer diameter narrow in a stepwise manner.

즉, 도 2의 단면도에서 볼 수 있듯이, 하우징 몸체(100)의 측벽(200) 외면과 내면이 모두 계단식으로 좁아지도록 형성될 수 있는 것이다. 이는 주조시의 모재를 빼내기 위해 유용한 방법임과 동시에, 하기에서 후술하듯이, 오링안착부(262,272)의 소재 두께를 가공 후에도 다른 부분보다 두껍게 유지하는데 있어서 효율적이다.That is, as can be seen in the cross-sectional view of Figure 2, both the outer surface and the inner surface of the side wall 200 of the housing body 100 can be formed to be narrowed stepwise. This is a useful method for removing the base metal during casting, and at the same time, as described below, the material thickness of the O-ring seating portions 262 and 272 is effective to be thicker than other parts even after processing.

구체적으로, 하우징 몸체(100)는 상부 및 하부 오링안착부(262,272)가 형성된 부분의 측면 두께(D1,D3)가 다른 부분의 측면 두께보다 2 ~ 3 mm 두껍게 형성되도록 함이 바람직한데, 상기 하우징 몸체(100)는 외면과 내면이 계단식으로 형성됨에 따라, 내측면은 상부내측면(250), 중앙내측면(260) 및 하부내측면(270)으로, 외측면은 상부외측면(220) 및 하부외측면(240)으로 각각 계단식으로 구분되도록 주조될 수 있다.Specifically, the housing body 100 is preferably such that the side thickness (D1, D3) of the portion where the upper and lower O-ring seating portion (262,272) is formed is formed 2 ~ 3 mm thicker than the side thickness of the other portion, the housing As the body 100 is cascaded on the outer surface and the inner surface, the inner surface is the upper inner surface 250, the central inner surface 260 and the lower inner surface 270, the outer surface is the upper outer surface 220 and The lower outer surface 240 may be cast so as to be divided into steps, respectively.

그리고, 상기 상부 오링안착부(262)는 중앙내측면(260)의 상단에 가공되고 하부 오링안착부(272)는 하부내측면(270)의 상단에 가공되며, 상기 하우징 몸체(100)의 외측면은 상부 오링안착부(262)의 하단 지점에서 상부외측면(220)과 하부외측면(240)이 구분되도록 형성될 수 있다. 이를 통해 상부 오링안착부(262)와 하부 오링안착부(272)는 가공이 된 후에도 중앙내측면(260) 부분보다 소재의 두께가 두겁게 형성됨으로써, 가공으로 인한 크랙의 발전 가능성을 대폭 낮출 수 있게 된 것이다. 이는 단지 후가공 단계에서 소재의 불량을 줄일 수 있을 뿐만 아니라, 모터를 장착하여 실사용되는 단계에서도 하우징의 내구성을 증대시켜 냉각유가 유출되지 않도록 함에 큰 바탕을 제공한다.In addition, the upper O-ring seating portion 262 is processed at the upper end of the central inner side surface 260 and the lower O-ring seating portion 272 is processed at the upper end of the lower inner side surface 270, the outside of the housing body 100 The side surface may be formed to distinguish the upper outer surface 220 and the lower outer surface 240 from the lower end of the upper O-ring seating portion 262. Through this, the upper O-ring seating portion 262 and the lower O-ring seating portion 272 are formed thicker than the central inner side surface 260 even after processing, thereby greatly reducing the possibility of crack development due to processing. It is. This not only reduces the defect of the material in the post-processing step, but also provides a great basis for preventing the coolant from leaking out by increasing the durability of the housing even when the motor is mounted in actual use.

한편, 상기 냉각유 유입구(320) 및 유출구(340)는 상기 중앙내측면(260) 지점에 하우징 몸체(100)를 관통하도록 형성됨으로써 하우징의 내부에서 냉각유가 흐를 수 있도록 한다. 또한, 앞서 살핀 바와 같이, 상부 오링안착부(262) 및 하부 오링안착부(272)의 두께(D1,D3)가 중앙내측면 지점(D2)보다 두껍게 형성되어 냉각유 유입구(320) 내지 유출구(340)와 크랙이 연결되어 리크될 가능성이 현저히 감소된다.Meanwhile, the cooling oil inlet 320 and the outlet 340 are formed to penetrate the housing body 100 at the central inner side surface 260 to allow the cooling oil to flow inside the housing. In addition, as described above, the thickness of the upper O-ring seating portion 262 and the lower O-ring seating portion 272 (D1, D3) is formed thicker than the central inner surface point (D2) to the cooling oil inlet (320) to the outlet ( 340 and the possibility of cracking and cracking are significantly reduced.

이러한 전기자동차의 모터하우징을 제조하기 위한 제조방법을 설명하면, 그 제조방법은, 하우징 몸체(100)의 상단부에 마운팅을 위한 플렌지부(120)를 형성하고, 하우징 몸체(100)의 내측면은 상부내측면(250), 중앙내측면(260) 및 하부내측면(270)으로, 외측면은 상부외측면(220) 및 하부외측면(240)으로 내경과 외경이 각각 계단식으로 구분되며 좁아지도록 하우징 몸체(100)를 주조하는 주조단계; 상기 하우징 몸체(100)의 중앙내측면(260) 상단에 상부 오링안착부(262)를 가공하되, 상부 오링안착부(262)의 상단이 상기 플렌지부(120)의 하단과 일정 높이 이격되도록 가공하는 상부가공단계; 및 상기 하우징 몸체(100)의 하부내측면(270)의 상단에 하부 오링안착부(272)를 가공하는 하부가공단계;를 포함할 수 있다.Referring to the manufacturing method for manufacturing a motor housing of such an electric vehicle, the manufacturing method, forming a flange portion 120 for mounting on the upper end of the housing body 100, the inner surface of the housing body 100 The upper inner surface 250, the medial inner surface 260 and the lower inner surface 270, the outer surface is the upper outer surface 220 and the lower outer surface 240, the inner diameter and the outer diameter are divided stepwise and narrowed respectively. Casting the housing body 100; Process the upper O-ring seating portion 262 on the upper end of the central inner surface 260 of the housing body 100, the upper end of the upper O-ring seating portion 262 is processed so as to be spaced apart from the lower end of the flange portion 120 by a certain height An upper machining step; And a lower processing step of processing the lower O-ring seating portion 272 on the upper end of the lower inner side surface 270 of the housing body 100.

또한, 상기 상부가공단계 및 하부가공단계는, 하우징 몸체(100)의 측면 두께 중 상부 오링안착부(262) 및 하부 오링안착부(272)가 가공된 지점의 두께가 중앙내측면(260) 지점의 두께보다 두껍게 형성되도록 가공할 수 있으며, 이러한 후가공 방법에 따라 일반적인 알루미늄 다이캐스팅 하우징에 비해 소재 크랙의 발생 가능성 및 냉각유의 리크 가능성이 현저히 줄어드는 것이다.In addition, the upper processing step and the lower processing step, the thickness of the point where the upper O-ring seating portion 262 and the lower O-ring seating portion 272 of the side thickness of the housing body 100 is the central inner surface 260 point It can be processed to be thicker than the thickness of, and the post-processing method is significantly reduced the likelihood of material cracking and leakage of cooling oil compared to the general aluminum die-casting housing.

본 발명은 특정한 실시예에 관련하여 도시하고 설명하였지만, 이하의 특허청구범위에 의해 제공되는 본 발명의 기술적 사상을 벗어나지 않는 한도 내에서, 본 발명이 다양하게 개량 및 변화될 수 있다는 것은 당 업계에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

100 : 하우징 몸체 120 : 플렌지부
122 : 탭핑홀 200 : 하우징 측면
220 : 상부외측면 240 : 하부외측면
250 : 상부내측면 260 : 중앙내측면
262 : 상부 오링안착부 270 : 하부내측면
272 : 하부 오링안착부 320 : 냉각유 유입구
340 : 냉각유 유출구100: housing body 120: flange portion
122: tapping hole 200: housing side
220: upper outer surface 240: lower outer surface
250: upper inner surface 260: central inner surface
262: upper O-ring seat 270: lower inner surface
272: lower O-ring seat 320: cooling oil inlet
340: cooling oil outlet

Claims (11)

내측에 모터가 삽입되는 공간이 형성된 하우징 몸체(100);
상기 하우징 몸체(100)의 상단부에 형성되며 마운팅을 위한 탭핑홀(122)이 형성된 플렌지부(120);
상기 하우징 몸체(100)의 둘레면을 관통하는 냉각유 유입구(320) 및 유출구(340); 및
상기 하우징 몸체(100)의 내측면 둘레를 따라 일정한 두께로 가공되되 상기 냉각유 유입구(320)와 유출구(340)를 사이에 두도록 한 쌍으로 가공되는 상부 오링안착부(262) 및 하부 오링안착부(272);를 포함하고,
상기 상부 오링안착부(262)는 그 상단이 플렌지부(120)의 하단과 일정 높이 이격되도록 형성되며,
상기 하우징 몸체(100)는 상부 및 하부 오링안착부(262,272)가 형성된 부분의 측면 두께(D1,D3)가 다른 부분의 측면 두께보다 두껍게 형성된 것을 특징으로 하는 전기자동차의 모터하우징.A housing body 100 having a space in which a motor is inserted;
A flange portion 120 formed at an upper end of the housing body 100 and having a tapping hole 122 for mounting;
Cooling oil inlet 320 and outlet 340 penetrating the circumferential surface of the housing body 100; And
The upper O-ring seating portion 262 and the lower O-ring seating portion is processed to a predetermined thickness along the inner circumference of the housing body 100, and processed in a pair so as to sandwich the cooling oil inlet 320 and the outlet 340. (272);
The upper O-ring seating portion 262 is formed so that the upper end is spaced apart from the lower end of the flange portion 120 by a predetermined height,
The housing body 100 is the motor housing of the electric vehicle, characterized in that the side thickness (D1, D3) of the upper and lower O-ring seating portion (262,272) is formed thicker than the side thickness of the other portion. 삭제delete 청구항 1에 있어서,
상기 하우징 몸체(100)는 내측면이 계단식으로 그 내경이 점차 좁아지도록 형성된 것을 특징으로 하는 전기자동차의 모터하우징.The method according to claim 1,
The housing body 100 is a motor housing of the electric vehicle, characterized in that the inner surface is formed so that the inner diameter is gradually narrowed. 청구항 3에 있어서,
상기 하우징 몸체(100)는 상부 및 하부 오링안착부(262,272)가 형성된 부분의 측면 두께(D1,D3)가 다른 부분의 측면 두께보다 2 ~ 3 mm 두껍게 형성된 것을 특징으로 하는 전기자동차의 모터하우징.The method according to claim 3,
The housing body 100 is the motor housing of the electric vehicle, characterized in that the side thickness (D1, D3) of the upper and lower O-ring seating portion (262,272) is formed 2 ~ 3 mm thicker than the side thickness of the other portion. 청구항 1에 있어서,
상기 하우징 몸체(100)는 측면의 내경과 외경이 계단식으로 좁아지도록 형성된 것을 특징으로 하는 전기자동차의 모터하우징.The method according to claim 1,
The housing body 100 is the motor housing of the electric vehicle, characterized in that the inner diameter and the outer diameter of the side is formed to narrow stepwise. 청구항 5에 있어서,
상기 하우징 몸체(100)는, 내측면은 상부내측면(250), 중앙내측면(260) 및 하부내측면(270)으로, 외측면은 상부외측면(220) 및 하부외측면(240)으로 각각 계단식으로 구분되도록 주조되는 것을 특징으로 하는 전기자동차의 모터하우징.The method according to claim 5,
The housing body 100, the inner surface is the upper inner surface 250, the central inner surface 260 and the lower inner surface 270, the outer surface to the upper outer surface 220 and the lower outer surface 240 Motor housing of the electric vehicle, characterized in that the casting to be divided into each step. 청구항 6에 있어서,
상기 상부 오링안착부(262)는 중앙내측면(260)의 상단에 가공되고 하부 오링안착부(272)는 하부내측면(270)의 상단에 가공되며, 상기 하우징 몸체(100)의 외측면은 상부 오링안착부(262)의 하단 지점에서 상부외측면(220)과 하부외측면(240)이 구분되도록 형성된 것을 특징으로 하는 전기자동차의 모터하우징.The method of claim 6,
The upper O-ring seat 262 is processed at the upper end of the central inner surface 260 and the lower O-ring seat 272 is processed at the upper end of the lower inner surface 270, the outer surface of the housing body 100 Motor housing of the electric vehicle, characterized in that the upper outer surface 220 and the lower outer surface 240 is formed at the lower point of the upper O-ring seating portion (262). 청구항 6에 있어서,
상기 냉각유 유입구(320) 및 유출구(340)는 상기 중앙내측면(260) 지점에 하우징 몸체(100)를 관통하도록 형성된 것을 특징으로 하는 전기자동차의 모터하우징.The method of claim 6,
The cooling oil inlet 320 and the outlet 340 is the motor housing of the electric vehicle, characterized in that formed through the housing body 100 at the point of the central inner surface (260). 청구항 1에 있어서,
상기 하우징 몸체(100)는 알루미늄 합금인 것을 특징으로 하는 전기자동차의 모터하우징.The method according to claim 1,
The housing body 100 is a motor housing of the electric vehicle, characterized in that the aluminum alloy. 하우징 몸체(100)의 상단부에 마운팅을 위한 플렌지부(120)를 형성하고, 하우징 몸체(100)의 내측면은 상부내측면(250), 중앙내측면(260) 및 하부내측면(270)으로, 외측면은 상부외측면(220) 및 하부외측면(240)으로 내경과 외경이 각각 계단식으로 구분되며 좁아지도록 하우징 몸체(100)를 주조하는 주조단계;
상기 하우징 몸체(100)의 중앙내측면(260) 상단에 상부 오링안착부(262)를 가공하되, 상부 오링안착부(262)의 상단이 상기 플렌지부(120)의 하단과 일정 높이 이격되도록 가공하는 상부가공단계; 및
상기 하우징 몸체(100)의 하부내측면(270)의 상단에 하부 오링안착부(272)를 가공하는 하부가공단계;를 포함하고.
상기 상부가공단계 및 하부가공단계는, 하우징 몸체(100)의 측면 두께 중 상부 오링안착부(262) 및 하부 오링안착부(272)가 가공된 지점의 두께가 중앙내측면(260) 지점의 두께보다 두껍게 형성되도록 가공하는 것을 특징으로 하는 전기자동차의 모터하우징 제조방법.Forming a flange portion 120 for mounting on the upper end of the housing body 100, the inner surface of the housing body 100 to the upper inner surface 250, the central inner surface 260 and the lower inner surface 270 , The outer side is a casting step of casting the housing body 100 so that the inner diameter and the outer diameter are respectively divided into a step by the upper outer surface 220 and the lower outer surface 240 is narrowed;
Process the upper O-ring seating portion 262 on the upper end of the central inner surface 260 of the housing body 100, the upper end of the upper O-ring seating portion 262 is processed so as to be spaced apart from the lower end of the flange portion 120 by a certain height An upper machining step; And
And a lower machining step of processing a lower O-ring seating portion 272 on the upper end of the lower inner side surface 270 of the housing body 100.
The upper processing step and the lower processing step, the thickness of the point where the upper O-ring seating portion 262 and the lower O-ring seating portion 272 of the side thickness of the housing body 100 is the thickness of the central inner surface 260 point Motor housing manufacturing method of an electric vehicle, characterized in that the processing to be formed thicker. 삭제delete
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311037A (en) * 1986-07-01 1988-01-18 Shinko Electric Co Ltd Mounting and fixing of stator of motor
JP2004364429A (en) * 2003-06-05 2004-12-24 Hitachi Ltd Liquid-cooled rotating electric machine
JP2007174783A (en) * 2005-12-21 2007-07-05 Nissan Motor Co Ltd Cooling structure and assembly method of motor generator for hybrid vehicle
JP2009213218A (en) * 2008-03-03 2009-09-17 Nissan Motor Co Ltd Cooling structure for rotating electrical machines and manufacturing method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6311037A (en) * 1986-07-01 1988-01-18 Shinko Electric Co Ltd Mounting and fixing of stator of motor
JP2004364429A (en) * 2003-06-05 2004-12-24 Hitachi Ltd Liquid-cooled rotating electric machine
JP2007174783A (en) * 2005-12-21 2007-07-05 Nissan Motor Co Ltd Cooling structure and assembly method of motor generator for hybrid vehicle
JP2009213218A (en) * 2008-03-03 2009-09-17 Nissan Motor Co Ltd Cooling structure for rotating electrical machines and manufacturing method therefor

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