KR101521852B1 - Device of differential for automatic transmission - Google Patents

Device of differential for automatic transmission Download PDF

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Publication number
KR101521852B1
KR101521852B1 KR1020140180151A KR20140180151A KR101521852B1 KR 101521852 B1 KR101521852 B1 KR 101521852B1 KR 1020140180151 A KR1020140180151 A KR 1020140180151A KR 20140180151 A KR20140180151 A KR 20140180151A KR 101521852 B1 KR101521852 B1 KR 101521852B1
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South Korea
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differential
impeller
cup
gear
holes
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KR1020140180151A
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Korean (ko)
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김선현
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주식회사 네오오토
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/26—Making machine elements housings or supporting parts, e.g. axle housings, engine mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
    • B22D21/04—Casting aluminium or magnesium
    • 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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Details Of Gearings (AREA)
  • Retarders (AREA)

Abstract

A differential gear for automatic transmission, which is connected to a driving pinion that receives the rotator power of a propeller shaft linked with the engine of a vehicle and a ring gear interlinked with the driving pinion, is provided to maximize the volume of inflow of oil and improve the lubrication efficiency of a differential side gear and a differential pinion gear. The differential gear of the present invention comprises: a differential cover which is combined with a ring gear in the shape of a disk and in which an axle axis is inserted into one side and a number of bolt holes are formed in a radial form on the surface; and a differential cup where a number of bolt holes are formed for its rear side to be combined with the differential cover and, into one side, an axle axis formed on the other side of the differential cover is inserted and whose inside has a differential side gear that conveys power to the differential cover and the axle axis inserted into the other side and a differential pinion gear that is interlinked at the top and the bottom of the differential side gear. In the middle of the differential cup, a number of first impeller holes in the shape of a long hole in the direction of circumference are formed with an interval for oil to flow in. A guiding unit protruding in the shape of a curve is formed to guide the oil flowing in through the first impeller holes formed with an interval to the first impeller holes. Therefore, as the first impeller holes and second impeller holes are formed at the differential cover and the differential cup that have a differential side gear and a differential pinion gear inside and a guiding unit with a protruding part in between the first impeller holes is formed, oil immediately flows into the first and second impeller holes by the centrifugal force by high-speed rotation of the differential cover and the differential cup.

Description

자동변속기용 차동장치{Device of differential for automatic transmission}Technical Field [0001] The present invention relates to a differential device for automatic transmission,

본 발명은 자동변속기용 차동장치에 관한 것으로서, 더욱 상세하게는 차동장치를 이루는 차동커버와 차동컵의 경량화를 도모하여 가공이 용이하게 이루어지면서도 차동커버와 차동컵에 각각 형성된 제1, 2임펠라공에 의해 차동장치 내부에 위치된 차동사이드기어 및 차동피니언기어의 윤활과 냉각기능이 원활히 수행되는 자동변속기용 차동장치에 관한 것이다.
The present invention relates to a differential device for an automatic transmission, and more particularly, to a differential device for an automatic transmission, and more particularly, to a differential device for an automatic transmission, Differential side gears and differential pinion gears located inside the differential by ball are lubricated and cooled smoothly. And a differential device for an automatic transmission.

일반적으로, 자동차는 엔진으로부터의 동력이 변속기로 전달되어 변속됨으로써, 차속에 맞는 적절한 기어비를 선택하여 주행하게 되는 바, 상기한 변속기에서 출력된 동력은 차동장치를 통해 휠을 회전시키면서 차량이 주행하도록 한다.Generally, the power of the engine is transmitted to the transmission and shifted to select an appropriate gear ratio suitable for the vehicle speed. The power output from the transmission is transmitted through the differential device while the vehicle is running do.

즉, 차동장치의 작용은 자동차가 선회할 때 바깥쪽 바퀴의 회전속도를 안쪽 바퀴보다 빠르게 해주고, 노면의 저항이 적은 구동 바퀴쪽으로 동력이 많이 되도록 해주는 장치이다. 따라서 차동장치는 뒷바퀴의 양 차축을 별개로 하고 그 중간에 차동기어를 설치하여 좌우 구동바퀴의 회전저항 차를 이용 양 바퀴의 회전수를 달리하는 장치이다. That is, the function of the differential device is to make the rotation speed of the outer wheel faster than the inner wheel when the vehicle turns, and to increase the power to the driving wheel with less road surface resistance. Therefore, the differential device is a device which has two axles on the rear wheel separately and a differential gear installed in the middle of the differential axle so as to vary the rotation speed of both wheels using the difference in rotational resistance between the left and right driving wheels.

이러한 차동장치는 링 기어와 일체로 되어 있으며, 회전력은 축에서 구동 피니언기어 - 링 기어 - 차동장치 - 차동 피니언기어 - 사이드기어 - 액슬 샤프트 등의 순서로 전달하게 된다.The differential gear is integrated with the ring gear, and the rotational force is transmitted from the shaft in the order of the drive pinion gear-ring gear, the differential gear, the differential pinion gear, the side gear-axle shaft, and the like.

이때 차동장치 내부의 구동 피니언기어와 차동 피니언기어의 작동을 원활히 하기 위해 차동장치 내부로 미션오일을 넣어주어 윤활시켜 작동을 용이하게 이루어지도록 한다.At this time, in order to facilitate the operation of the driving pinion gear and the differential pinion gear in the differential device, the differential oil is introduced into the differential device for lubrication so that the operation is facilitated.

하지만 차량이 저속 주행하게 되면 차동장치의 링기어등이 연동하여 저속 회전하게 되면 원심력이 저하되어 차동장치에 충분히 오일이 공급되지 않게 되고 이로 인해 차동장치 내부의 구동 피니언기어와 차동 피니언기어의 마모가 급격하게 발생되는 문제점이 있어왔다.
However, when the vehicle runs at a low speed, when the ring gear of the differential gear is interlocked and rotated at a low speed, the centrifugal force is lowered and oil is not sufficiently supplied to the differential gear. As a result, wear of the drive pinion gear and the differential pinion gear There has been a problem that it occurs suddenly.

대한민국 공개특허 제10-2008-0094661호 (2008. 10. 23)Korean Patent Publication No. 10-2008-0094661 (2008. 10. 23)

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 차동장치를 이루는 차동커버와 차동컵의 경량화를 도모하여 가공이 용이하게 이루어지면서도 차동커버와 차동컵에 각각 형성된 제1, 2임펠라공에 의해 차동장치 내부에 위치된 차동사이드기어 및 차동피니언기어의 윤활과 냉각기능이 원활히 수행되는 자동변속기용 차동장치를 제공하는 데 있다.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a differential cover and a differential cup which are lightweight and easy to be machined, The lubrication and cooling functions of the differential side gear and the differential pinion gear positioned in the differential device by the first and second impeller balls formed respectively are performed smoothly And to provide a differential device for an automatic transmission.

상기와 같은 목적을 달성하기 위하여, 본 발명은 차량의 엔진과 연동되는 추진축의 회전력을 전달받는 구동 피니언 및 구동 피니언에 맞물리는 링 기어에 연결되는 자동변속기용 차동장치에 있어서, 상기 링 기어와 결합되며 원판 형태로 이루어지며, 일측으로 액슬축이 인입되고 표면의 방사상으로 다수의 볼트공이 형성되는 차동커버; 후측이 상기 차동커버와 결합되도록 볼트공이 다수 형성되고 일측으로 차동커버의 타측에 형성되는 액슬축이 인입되며, 내부에는 차동커버 및 타측에 인입되는 액슬축에 동력을 전달하는 차동사이드기어 및 차동사이드기어의 상, 하부로 기어가 맞물리는 차동피니언기어가 구비되는 차동컵;이 포함되고, 상기 차동컵의 중단에는 오일이 유입될 수 있도록 원주방향의 장공 형태인 다수의 제1임펠라공이 간격을 두고 형성되고, 상기 간격을 두고 형성된 제1임펠라공 사이로 유입되는 오일을 제1임펠라공으로 안내하도록 곡선형태로 돌출되는 안내부가 형성됨을 특징으로 하는 자동변속기용 차동장치를 제공한다.
In order to achieve the above object, the present invention provides a differential device for an automatic transmission, which is connected to a drive pinion and a ring gear engaged with a drive pinion, which receives rotation force of a propeller shaft interlocked with an engine of a vehicle, A differential cover which is formed in a disk shape and in which an axle shaft is inserted into one side and a plurality of bolt holes are formed in a radial direction of the surface; A differential cover, a differential cover, a differential cover, and a differential cover. The differential cover includes a plurality of bolt holes for receiving the differential cover, A plurality of first impeller balls in the form of a slot in the circumferential direction are arranged at intervals so as to allow oil to flow into the differential cup, And a guide portion protruding in a curved shape is formed to guide the oil introduced into the first impeller bore formed at the gap to the first impeller bore.

전술한 바와 같이 본 발명에 따르면, 내부에 차동사이드기어 및 차동피니언기어가 구비되는 차동커버와 차동컵으로 제1, 2임펠라공이 형성됨과 아울러 제1임펠라공의 사이로 돌출부가 형성된 안내부가 형성됨으로써 차동커버와 차동컵의 고속회전에 의한 원심력에 의해 오일이 제1. 2임펠라공으로 바로 유입이 이루어져 오일의 유입량이 극대화되고 차동사이드기어 및 차동피니언기어의 윤활효율이 향상되는 효과가 있다.As described above, according to the present invention, first and second impeller holes are formed by a differential cover and a differential cup in which a differential side gear and a differential pinion gear are provided, and a guide portion formed with protrusions between the first impeller holes is formed, By the centrifugal force generated by the high-speed rotation of the cover and the differential cup, 2 is directly introduced into the impeller ball, thereby maximizing the inflow amount of the oil and improving the lubrication efficiency of the differential side gear and the differential pinion gear.

또한 제1, 2형태로 인해 지지핀을 차동컵 내부에 고정함으로서 차동피니언기어 및 차동피니언기어와 맞물리는 차동사이드기어의 위치를 고정시켜주어 자동변속기의 작동이 원활하게 이루어지게 하는 효과가 있다.In addition, since the support pin is fixed to the inside of the differential cup due to the first and second shapes, the position of the differential side gear engaged with the differential pinion gear and the differential pinion gear is fixed and the operation of the automatic transmission is smoothly performed.

또한 제1, 2오일안내홈이 차동커버 및 차동컵의 내부로 형성됨으로써 제1, 2임펠라홈으로 유입되는 오일이 제1, 2오일안내홈으로 안내되어 차동사이드기어 및 차동피니언기어의 윤활효율을 향상시키면서도 차동사이드기어 및 차동피니언기어와 차동컵과의 마찰에 의한 소착이 방지되며 차동장치의 소음이 최소화되는 효과가 있다.
Further, since the first and second oil guide grooves are formed in the interior of the differential cover and the differential cup, the oil introduced into the first and second impeller grooves is guided to the first and second oil guide grooves and the lubricating efficiency of the differential side gear and the differential pinion gear It is possible to prevent the differential side gear and the differential cup due to friction between the differential pinion gear and the differential cup, thereby minimizing the noise of the differential gear.

도 1은 본 발명의 바람직한 형태를 나타내는 예시도,
도 2는 본 발명인 차동컵의 바람직한 형태를 나타내는 예시도,
도 3은 본 발명인 차동커버의 바람직한 형태를 나타내는 예시도,
도 4는 본 발명에 의한 제1, 2오일안내홈의 바람직한 형태를 나타내는 단면도,
도 5, 6은 본 발명에 의한 지지핀이 고정되는 제1, 2형태를 나타내는 바람직한 형태는 나타내는 예시도.1 is an exemplary view showing a preferred embodiment of the present invention,
2 is an exemplary view showing a preferred form of the differential cup according to the present invention;
3 is an exemplary view showing a preferred form of the differential cover according to the present invention,
4 is a sectional view showing a preferred embodiment of the first and second oil guide grooves according to the present invention,
FIGS. 5 and 6 are views showing a preferred embodiment of the first and second embodiments in which the support pin according to the present invention is fixed; FIG.

이하 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 더욱 상세하게 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명의 바람직한 형태를 나타내는 예시도로서, 도 1 내지 도 3에 도시된 바와 같이 본 발명은 차량의 엔진과 연동되는 추진축의 회전력을 전달받는 구동 피니언 및 구동 피니언에 맞물리는 링 기어에 연결되는 자동변속기용 차동장치에 관한 것으로 상호 결합되는 차동커버(10)와 차동컵(20)으로 구성되어진다.1 to 3, the present invention relates to a drive pinion that receives rotational force of a propeller shaft interlocked with an engine of a vehicle, and a ring gear that meshes with a drive pinion A differential cover (10) and a differential cup (20) which are coupled to each other.

차동커버(10)는 엔진과 연동되는 추진축의 회전력을 전달받는 구동 피니언에 맞물리는 링 기어와 결합되는 원판 형태로 이루어지며, 일측으로 액슬축이 인입되고 표면의 방사상으로 다수의 볼트공(11)이 형성되어 차동컵(20)과의 결합이 이루어지도록 구성된다.The differential cover 10 is in the form of a disk coupled with a ring gear engaged with a driving pinion that receives the rotational force of the propeller shaft interlocked with the engine. The axle shaft is drawn in one side, So that the coupling with the differential cup 20 is achieved.

차동컵(20)은 후측이 차동커버(10)와 결합되도록 차동커버(10)에 형성된 볼트공(11)과 수직성상으로 일치하는 볼트공(21)이 다수 형성된다.A plurality of bolt holes 21 are formed in the differential cup 20 so as to be vertically aligned with the bolt holes 11 formed in the differential cover 10 so that the rear side of the differential cup 10 is engaged with the differential cover 10.

또한 차동컵(20)은 일측으로 차동커버(10)의 타측에 형성되는 액슬축이 인입되어 차동커버(10)와 차동컵(20)으로 바퀴의 양측에 연결되는 액슬축이 각각 인입되도록 구성된다.The differential cup 20 is constructed such that an axle shaft formed on the other side of the differential cover 10 is drawn in one side and the axle shafts connected to both sides of the differential casing 10 and the differential cup 20 are respectively inserted .

또한 차동컵(20)의 내부에는 차동커버(10)와 차동컵(20)으로 바퀴의 양측에 연결되는 액슬축에 동력을 전달하는 차동사이드기어 및 차동사이드기어의 상, 하부로 기어가 맞물리는 차동피니언기어가 구비된다.The differential cup 20 includes differential casing 10 and differential cup 20 for transmitting power to the axle shafts connected to both sides of the wheel and gears meshed with the upper and lower portions of the differential side gears A differential pinion gear is provided.

상기 차동컵(20)의 중단에는 오일이 유입될 수 있도록 원주방향의 장공 형태인 다수의 제1임펠라공(23)이 간격을 두고 형성되고, 상기 간격을 두고 형성된 제1임펠라공(23) 사이로 유입되는 오일을 제1임펠라공(23)으로 안내하도록 곡선형태로 돌출되는 안내부(24)가 형성된다.A plurality of first impeller holes 23 are formed at intervals in the circumferential direction so as to allow oil to flow into the differential cup 20, and the first impeller holes 23 are formed between the first impeller holes 23 A guide portion 24 protruding in a curved shape is formed so as to guide the introduced oil to the first impeller hole 23.

즉, 상기 장공의 형태로 형성된 제1임펠라공(23)과 더불어 제1임펠라공(23) 사이에 형성된 안내부(24)로 인하여 자동변속기용 차동장치로 오일이 분사될 때 차동커버(10)와 차동컵(20)의 고속회전에 의한 원심력에 의해 분사되는 오일은 안내부(24)를 통하여 안내된 후 제1임펠라공(23)으로 바로 유입되어 오일의 유입량이 극대화되는 효과를 가지게 되는 것이다.That is, when the oil is injected into the differential gear for the automatic transmission due to the guide portion 24 formed between the first impeller holes 23 and the first impeller holes 23 formed in the shape of the long holes, The oil injected by the centrifugal force due to the high speed rotation of the differential cup 20 is guided through the guide portion 24 and then flows directly into the first impeller hole 23 to maximize the inflow amount of the oil .

여기서 차동컵(20)은 제1임펠라공(23)이 형성된 안내부의 양측단부 중 어느 하나의 단부에 돌출되어 차동커버(10)와 차동컵(20)의 고속회전에 의한 원심력을 통해 안내부(24)로 안내되는 오일을 일괄적으로 제1임펠라공(23)으로 유입될 수 있도록 하는 돌출부(25)가 형성되어 안내부를 통해 안내되는 오일이 돌출부(25)에 마찰되어 돌출부(25) 인근의 제1임펠라공(23)으로 유입되도록 한다.Here, the differential cup 20 protrudes from one end of both ends of the guide portion formed with the first impeller bore 23, and is guided through the centrifugal force due to the high-speed rotation of the differential cover 10 and the differential cup 20, The oil guided through the guide portion is rubbed against the protruding portion 25 so that the oil introduced into the first impeller bore 23 can be prevented from entering the first impeller bore 23, So that it flows into the first impeller hole 23.

한편, 차동커버(10)는 차동컵(20)과 맞닿는 부위에 오일이 유입될 수 있도록 원주방향의 장공 형태인 다수의 제2임펠라공(13)이 간격을 두고 형성된다.The differential cover 10 has a plurality of second impeller holes 13 spaced apart in the circumferential direction so as to allow oil to flow into the differential cup 20.

따라서 제2임펠라공(13)은 제1임펠라공(23)과 더불어 차동장치 내부로 오일의 유입은 원활해지면서도 외부로 이탈이 최소화되어 차동사이드기어 및 차동피니언기어의 윤활효율을 극대화시키도록 구성된다.Therefore, the second impeller ball 13 is configured to maximize the lubricating efficiency of the differential side gear and the differential pinion gear by minimizing the outflow of the oil to the inside of the differential device while smoothly introducing oil into the differential device together with the first impeller hole 23 do.

여기서 상기 차동컵(20) 내부로 차동피니언기어의 위치를 회전가능하게 고정할 수 있도록 상, 하측에 위치된 차동피니언기어를 관통하며 양측이 차동컵(20)에 형성된 고정공(26)에 안착되는 지지핀(30)이 구성된다.Here, the differential pinion gears are mounted on the differential cups 20 so that the positions of the differential pinion gears can be rotatably fixed to the differential cups 20, and both sides thereof are seated on the fixing holes 26 formed in the differential cups 20 The support pins 30 are formed.

상기 지지핀(30)을 통하여 차동피니언기어 및 차동피니언기어와 맞물리는 차동사이드기어의 위치를 고정시켜주어 자동변속기의 작동이 원활하게 이루어지게 하는 것이다.The position of the differential side gear engaged with the differential pinion gear and the differential pinion gear is fixed through the support pin 30 so as to smoothly operate the automatic transmission.

본 발명에서는 지지핀(30)을 차동컵(20) 내부에 고정함으로서 차동피니언기어 및 차동피니언기어의 위치 또한 고정시키게 되며, 이를 위해 제1, 2형태로 구분되어 사용된다.In the present invention, the positions of the differential pinion gear and the differential pinion gear are also fixed by fixing the support pin 30 inside the differential cup 20. For this purpose, the first and second types are used.

제1형태는 도 5에 도시된 바와 같이 지지핀(30)을 고정공(26)에 안착되는 상, 하측 부위로 관통공(31)이 각각 형성됨과 아울러 상기 지지핀(30)이 안착되는 고정공(26)의 상, 하부로는 고정공(26)과 연결되는 통과홈(27)이 형성된다.5, a through hole 31 is formed in the upper and lower portions of the support pin 30, which are seated on the fixing hole 26, respectively. In addition, the support pin 30 is fixed A through groove 27 is formed in the upper and lower portions of the hole 26 to be connected to the fixing hole 26.

또한 상기 통과홈(27)을 통해 지지핀(30)의 관통공(31)에 이탈방지핀(40)이 인입되도록 구성된다.And the escape prevention pin 40 is inserted into the through hole 31 of the support pin 30 through the passage groove 27.

따라서 이탈방지핀(40)으로 하여금 지지핀(30)을 고정시키게 되는 것이며, 지지핀(30)의 고정력을 높이기 위해 관통공(31)과 관통공(31)에 인입되어 마찰되는 이탈방지핀(40)의 면으로 각각 자성을 가지는 자성체를 구비하여 구성될 수도 있으며, 상기 자성체는 자성을 높은 네오듐자석으로 구비되는 것이 바람직하다.Therefore, the release preventing pin 40 fixes the support pin 30 and the escape prevention pin 30 which is drawn into and rubbed into the through hole 31 and the through hole 31 to increase the fixing force of the support pin 30 40, and the magnetic body may be formed of a high-magnetism neodymium magnet.

제2형태는 도 6(a), (b)에 도시된 바와 같이 고정공(26)이 형성되는 차동컵(20)의 외측으로 탄성을 가지는 연질의 와이어링(50)이 체결되어, 상기 지지핀(30)의 양단부를 와이어링(50)으로 가압하여 지지핀(30)의 위치를 고정시키도록 구성된다.In the second embodiment, as shown in Figs. 6 (a) and 6 (b), a soft wire ring 50 having elasticity is fastened to the outside of the differential cup 20 in which the fixing holes 26 are formed, And both ends of the pin 30 are pressed by the wire ring 50 to fix the position of the support pin 30. [

상기 와이어링(50)에는 지지핀(30)이 접지되는 부위로 지지핀(30)의 단부를 고정하도록 자성체가 구비될 수 있으며, 또한 와이어링(50)이 지지핀(30)을 고정하는 위치를 식별하도록 차동컵(20)의 외측으로 와이어링(50)의 상, 하단부를 걸림하는 걸림구가 다수 형성될 수도 있다.The wire ring 50 may be provided with a magnetic body to fix the end portion of the support pin 30 to a portion where the support pin 30 is grounded, A large number of latching openings for latching the upper and lower ends of the wiring ring 50 to the outside of the differential cup 20 may be formed.

그리고 차동컵(20)으로 와이어링(50)이 체결되는 부위의 원호상으로 와이어링(50)이 인입되어 고정될 수 있는 인입홈(20h)이 형성되어 지지핀(30)을 고정하는 와이어링(50)의 고정력을 높여주어 지지핀(30)을 안정적으로 고정할 수 있도록 한다.An inlet groove 20h is formed on the arc of the portion where the wire 50 is fastened to the differential cup 20 so that the wire ring 50 can be inserted and fixed, The holding force of the support pin 30 is increased, and the support pin 30 can be stably fixed.

그리고 제2형태는 제1형태 보다 간단한 구조로 지지핀(30)을 고정할 수 있지만 본 발명에서는 상기 제1, 2형태를 구분하여 사용할 수 있으며, 보다 안정적으로 지지핀을 고정하기 위해서는 제1, 2형태를 같이 사용하여도 무방하다.In the second embodiment, the support pin 30 can be fixed with a simpler structure than the first embodiment. However, in the present invention, the first and second embodiments can be used separately. In order to fix the support pin more stably, Two types may be used together.

여기서 상기 차동컵(20)은 내부에 제1임펠라공(23)에 의해 유입되는 오일이 안내되는 다수의 제1오일안내홈(29)이 형성되고, 상기 차동커버(10)는 내부에 제2임펠라공(13)에 의해 유입되는 오일이 안내되는 다수의 제2오일안내홈(19)이 형성되어 Here, the differential cup 20 is formed with a plurality of first oil guide grooves 29 for guiding the oil introduced therein by the first impeller bores 23, and the differential cover 10 has a second A plurality of second oil guide grooves 19 for guiding the oil introduced by the impeller hole 13 are formed

상기 제1, 2오일안내홈(19, 29)이 차동커버(10) 및 차동컵(20)의 내부로 형성됨으로서 제1, 2임펠라홈(13, 23)으로 유입되는 오일이 차동커버(10) 및 차동컵(20)의 원심력에 의해 바로 배출되지 않고 제1, 2오일안내홈(19, 29)으로 안내되어 차동사이드기어 및 차동피니언기어의 윤활효율을 향상시키면서도 차동사이드기어 및 차동피니언기어와 차동컵(20)과의 마찰에 의한 소착이 방지되며 차동장치의 소음이 최소화되는 효과를 가지게 되는 것이다.The first and second oil guide grooves 19 and 29 are formed inside the differential cover 10 and the differential cup 20 so that the oil flowing into the first and second impeller grooves 13 and 23 flows into the differential cover 10 And the first and second oil guide grooves 19 and 29 without being directly discharged by the centrifugal force of the differential cup 20 and the differential cup gear 20 to improve the lubricating efficiency of the differential side gear and the differential pinion gear, And the differential cup 20 are prevented from being separated from each other by friction, thereby minimizing the noise of the differential device.

여기서 차동커버(10)와 차동컵(20)의 경량화를 도모하여 가공이 용이하게 이루어지면서도 내열성 및 내마모성과 같은 기계적 강도를 얻기 위해 재질을 알루미늄계 금속 또는 마그네슘계 금속으로 주조가공 또는 단조가공되어 생산되는 것이 바람직하다.
Here, in order to reduce the weight of the differential cover 10 and the differential cup 20 to facilitate machining, the material is cast or forged to an aluminum-based metal or a magnesium-based metal in order to obtain mechanical strength such as heat resistance and wear resistance It is preferable that it is produced.

10 : 차동커버 11 : 볼트공
13 : 제2임펠라공 19 : 제2오일안내홈
20 : 차동컵 21 : 볼트공
23 : 제1임펠라공 24 : 안내부
25 : 돌출부 26 : 고정공
27 : 통과홈 29 : 제1오일안내홈
30 : 지지핀 31 : 관통공
40 : 이탈방지핀 50 : 와이어링10: differential cover 11: bolt hole
13: second impeller ball 19: second oil guide groove
20: differential cup 21: bolt hole
23: first impeller hole 24: guide portion
25: protrusion 26:
27: passage groove 29: first oil guide groove
30: Support pin 31: Through hole
40: Leaving prevention pin 50: Wiring

Claims (8)

차량의 엔진과 연동되는 추진축의 회전력을 전달받는 구동 피니언 및 구동 피니언에 맞물리는 링 기어에 연결되는 자동변속기용 차동장치에 있어서,
상기 링 기어와 결합되며 원판 형태로 이루어지며, 일측으로 액슬축이 인입되고 표면의 방사상으로 다수의 볼트공(11)이 형성되는 차동커버(10);
후측이 상기 차동커버(10)와 결합되도록 볼트공(21)이 다수 형성되고 일측으로 차동커버(10)의 타측에 형성되는 액슬축이 인입되며, 내부에는 차동커버(10) 및 타측에 인입되는 액슬축에 동력을 전달하는 차동사이드기어 및 차동사이드기어의 상, 하부로 기어가 맞물리는 차동피니언기어가 구비되는 차동컵(20);이 포함되고,
상기 차동컵(20)의 중단에는 오일이 유입될 수 있도록 원주방향의 장공 형태인 다수의 제1임펠라공(23)이 간격을 두고 형성되고, 상기 간격을 두고 형성된 제1임펠라공(23) 사이로 유입되는 오일을 제1임펠라공(23)으로 안내하도록 곡선형태로 돌출되는 안내부(24)가 형성되고,
상기 차동컵(20)은 내부에 제1임펠라공(23)에 의해 유입되는 오일이 안내되는 다수의 제1오일안내홈(29)이 형성되고,
상기 차동커버(10)는 내부에 제2임펠라공(13)에 의해 유입되는 오일이 안내되는 다수의 제2오일안내홈(19)이 형성됨을 특징으로 하는 자동변속기용 차동장치.
1. A differential device for an automatic transmission, which is connected to a drive pinion which receives a rotational force of a propeller shaft interlocked with an engine of a vehicle and a ring gear which meshes with a drive pinion,
A differential cover 10 coupled to the ring gear and formed in a disc shape, in which a shaft shaft is inserted into one side and a plurality of bolt holes 11 are formed radially in a surface;
A plurality of bolt holes 21 are formed on the rear side of the differential cover 10 so as to be engaged with the differential cover 10 and an axle shaft formed on the other side of the differential cover 10 is inserted into the differential cover 10, And a differential cup (20) having a differential side gear for transmitting power to the axle shaft and a differential pinion gear for meshing the gears up and down of the differential side gear,
A plurality of first impeller holes 23 are formed at intervals in the circumferential direction so as to allow oil to flow into the differential cup 20, and the first impeller holes 23 are formed between the first impeller holes 23 A guide portion 24 protruding in a curved shape to guide the introduced oil to the first impeller hole 23 is formed,
The differential cup 20 is formed with a plurality of first oil guide grooves 29 through which oil introduced by the first impeller bores 23 is guided,
Wherein the differential cover (10) is formed with a plurality of second oil guide grooves (19) in which oil introduced by the second impeller hole (13) is guided.
제1항에 있어서,
상기 차동컵(20)은 제1임펠라공(23)이 형성된 안내부의 양측단부 중 어느 하나의 단부에 돌출되어 안내부(24)에 의해 안내되는 오일을 일괄적으로 제1임펠라공(23)으로 유입될 수 있도록 하는 돌출부(25)가 형성됨을 특징으로 하는 자동변속기용 차동장치.
The method according to claim 1,
The differential cup 20 is integrally formed with the first impeller hole 23 so as to project the oil guided by the guide portion 24 protruding from one end of both side ends of the guide portion formed with the first impeller hole 23 And a protruding portion (25) for allowing the fluid to flow therethrough is formed.
제1항에 있어서,
상기 차동커버(10)는 차동컵(20)과 맞닿는 부위에 오일이 유입될 수 있도록 원주방향의 장공 형태인 다수의 제2임펠라공(13)이 간격을 두고 형성됨을 특징으로 하는 자동변속기용 차동장치.
The method according to claim 1,
Wherein the differential cover (10) has a plurality of second impeller holes (13) spaced apart in the circumferential direction so as to allow oil to flow into the differential cup (20) Device.
제1항에 있어서,
상기 차동컵(20) 내부로 차동피니언기어의 위치를 회전가능하게 고정할 수 있도록 상, 하측에 위치된 차동피니언기어를 관통하며 양측이 차동컵(20)에 형성된 고정공(26)에 안착되는 지지핀(30)이 구성되고,
상기 지지핀(30)은 고정공(26)에 안착되는 부위로 관통공(31)이 각각 형성되고,
상기 차동컵(20)의 고정공(26) 상, 하부로는 고정공(26)과 연결되는 통과홈(27)이 형성되며,
상기 통과홈(27)을 통해 지지핀(30)의 관통공(31)에 이탈방지핀(40)이 인입되도록 구성됨을 특징으로 하는 자동변속기용 차동장치.
The method according to claim 1,
The differential pinion gears are mounted on the differential cups 20 so that the positions of the differential pinion gears can be rotatably fixed to the differential cups 20 and both sides thereof are seated on the fixing holes 26 formed in the differential cups 20 The support pin 30 is constituted,
The supporting pins 30 are formed in through holes 31 at the positions where the supporting pins 30 are seated on the fixing holes 26,
On the upper and lower sides of the fixing hole 26 of the differential cup 20, a through hole 27 connected to the fixing hole 26 is formed,
Wherein a separation preventing pin (40) is inserted into the through hole (31) of the support pin (30) through the through groove (27).
제1항에 있어서,
상기 차동컵(20) 내부로 차동피니언기어의 위치를 회전가능하게 고정할 수 있도록 상, 하측에 위치된 차동피니언기어를 관통하며 양측이 차동컵(20)에 형성된 고정공(26)에 안착되는 지지핀(30)이 구성되고,
상기 고정공(26)이 형성되는 차동컵(20)의 외측으로 탄성을 가지는 연질의 와이어링(50)이 체결되어, 상기 지지핀(30)의 양단부를 와이어링(50)으로 가압하여 지지핀(50)의 위치를 고정시키도록 구성됨을 특징으로 하는 자동변속기용 차동장치.
The method according to claim 1,
The differential pinion gears are mounted on the differential cups 20 so that the positions of the differential pinion gears can be rotatably fixed to the differential cups 20 and both sides thereof are seated on the fixing holes 26 formed in the differential cups 20 The support pin 30 is constituted,
A flexible wire ring 50 having elasticity is fastened to the outside of the differential cup 20 in which the fixing hole 26 is formed so that both ends of the support pin 30 are pressed by the wire ring 50, Is configured to fix the position of the differential gear (50).
제5항에 있어서,
상기 차동컵(20)은 와이어링(50)이 체결되는 부위의 원호상으로 와이어링(50)이 인입되어 고정될 수 있는 인입홈(20h)이 형성됨을 특징으로 하는 자동변속기용 차동장치.
6. The method of claim 5,
Wherein the differential cup (20) is formed with a lead-in groove (20h) through which the wire ring (50) can be inserted and fixed on the arc of a portion where the wire ring (50) is fastened.
삭제delete 제1항 내지 제6항 중 어느 한 항에 있어서,
상기 차동커버(10)와 차동컵(20)은 재질이 알루미늄계 금속 또는 마그네슘계 금속이며, 주조가공 또는 단조가공으로 이루어짐을 특징으로 하는 자동변속기용 차동장치.7. The method according to any one of claims 1 to 6,
Wherein the differential cover (10) and the differential cup (20) are made of an aluminum-based metal or a magnesium-based metal and are formed by casting or forging.
KR1020140180151A 2014-12-15 2014-12-15 Device of differential for automatic transmission KR101521852B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101720996B1 (en) 2016-11-18 2017-03-30 (주) 호창엠에프 manufacturing method for differential cup of differential assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10159943A (en) * 1996-11-27 1998-06-16 Tochigi Fuji Ind Co Ltd Differential gear
JPH10281256A (en) * 1997-04-03 1998-10-23 Yanagawa Seiki Kk Manufacture of aluminum differential case casting and casting mold used therein
JP3280380B2 (en) * 1992-10-16 2002-05-13 オートモーチブ プロダクツ ピーエルシー Cam type differential mechanism with oil pump device
JP2009168070A (en) * 2008-01-11 2009-07-30 Ｇｋｎ ドライブライン トルクテクノロジー株式会社 Differential device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3280380B2 (en) * 1992-10-16 2002-05-13 オートモーチブ プロダクツ ピーエルシー Cam type differential mechanism with oil pump device
JPH10159943A (en) * 1996-11-27 1998-06-16 Tochigi Fuji Ind Co Ltd Differential gear
JPH10281256A (en) * 1997-04-03 1998-10-23 Yanagawa Seiki Kk Manufacture of aluminum differential case casting and casting mold used therein
JP2009168070A (en) * 2008-01-11 2009-07-30 Ｇｋｎ ドライブライン トルクテクノロジー株式会社 Differential device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101720996B1 (en) 2016-11-18 2017-03-30 (주) 호창엠에프 manufacturing method for differential cup of differential assembly

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