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KR100992813B1 - Medium power transmission gear set of 2 axis automatic transmission for vehicle - Google Patents

Medium power transmission gear set of 2 axis automatic transmission for vehicle Download PDF

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Publication number
KR100992813B1
KR100992813B1 KR1020080077585A KR20080077585A KR100992813B1 KR 100992813 B1 KR100992813 B1 KR 100992813B1 KR 1020080077585 A KR1020080077585 A KR 1020080077585A KR 20080077585 A KR20080077585 A KR 20080077585A KR 100992813 B1 KR100992813 B1 KR 100992813B1
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South Korea
Prior art keywords
power transmission
gear
intermediate power
transmission gear
axis
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KR20100018873A (en
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서강수
서현승
황성욱
심휴태
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현대자동차주식회사
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    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F16H2057/02047—Automatic transmissions
    • 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
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02091—Measures for reducing weight of gearbox

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

본 발명은 제1축상의 주변속부로부터 전달되는 회전동력을 제2축상의 부변속부로 전달하는 중간 동력전달기어의 구성을 간단히 하여 조립공정을 단순화하고, 형상의 단순화하여 중량 저감 및 단조 금형비 절감하여 생산원가를 크게 절감하는데 있다.The present invention simplifies the assembly process by simplifying the construction of the intermediate power transmission gear for transmitting the rotational power transmitted from the peripheral speed portion on the first axis to the secondary transmission portion on the second axis, simplifying the assembly process to reduce the weight and forging die cost It is to greatly reduce the production cost.

이를 위하여 입력축인 제1축상에 배치된 주변속부에서 1차적으로 변속하여 출력하면 상기 제1축과 일정간격을 두고 평행하게 배치되는 제2축상에 배치된 부변속부에서 회전동력을 전달받아 2차적으로 변속하여 출력하는 2축 자동 변속기에 있어서, 상기 주변속부의 트랜스퍼 드라이브 기어와 부변속부의 유성기어셋트의 피니언 사이에 개재되는 중간 동력전달기어와, 상기 중간 동력전달기어를 제2축에 회전 가능하게 고정시켜 주는 보스부재를 배치하여 이루어지는 차량용 2축 자동 변속기의 중간 동력전달기어셋트를 제공한다.To this end, when the primary speed is shifted and output from the peripheral speed portion disposed on the first axis, which is the input shaft, the rotational power is transmitted from the secondary speed transmission portion disposed on the second axis disposed parallel to the first axis at a predetermined interval. A two-axis automatic transmission for shifting and outputting a gear, wherein the intermediate power transmission gear interposed between the transfer drive gear of the peripheral speed gear and the pinion of the planetary gear set of the secondary transmission and the intermediate power transmission gear are rotatable on a second shaft. It provides an intermediate power transmission gear set of a two-axis automatic transmission for a vehicle made by arranging a boss member for fastening.

동력전달기어, 보스부재, 스냅링, 유성기어, 링기어 Power transmission gear, boss member, snap ring, planetary gear, ring gear

Description

차량용 2축 자동 변속기의 중간 동력전달기어셋트{MIDDLE TRANSMIT GEAR SET OF TWO - AXIS AUTOMATIC TRANSMISSION FOR VEHICLES} MIDLE TRANSMIT GEAR SET OF TWO-AXIS AUTOMATIC TRANSMISSION FOR VEHICLES}

본 발명은 다수의 유성기어셋트와 마찰요소를 구비하여 다단의 변속단을 실현하는 차량용 자동 변속기에 있어서, 주변속부와 부변속부 사이에서 동력을 전달하는 2축 자동변속기의 중간 동력전달기어셋트에 관한 것이다.The present invention is a vehicle automatic transmission having a plurality of planetary gear sets and friction elements to realize a multi-stage shift stage, the intermediate power transmission gear set of the two-axis automatic transmission for transmitting power between the peripheral speed and the secondary transmission. It is about.

차량등에 탑재되는 자동 변속기는 다수의 유성기어셋트와 마찰요소인 다수의 클러치 및 브레이크를 조합하여 상기 클러치와 브레이크의 작동 및 작동 해제에 의하여 복수의 변속단을 구현할 수 있도록 구성된다.The automatic transmission mounted on a vehicle is configured to combine a plurality of planetary gear sets and a plurality of clutches and brakes, which are friction elements, to implement a plurality of gear stages by actuation and deactivation of the clutch and brake.

그리고 자동 변속기는 동일 수의 변속단을 구현하더라도 유성기어셋트와 마찰요소인 클러치와 브레이크의 조합 방법에 따라 내구성 및 동력 전달 효율, 그리고 크기 및 중량 등이 크게 달라지기 때문에, 보다 견고하고 동력 손실을 최소화하면서도 컴팩트화 할 수 있는 연구 개발이 계속되고 있다.And even if the automatic transmission has the same number of gear stages, the durability, power transmission efficiency, size and weight of the planetary gear set and the friction elements of the clutch and brake are greatly changed. Minimal and compact research and development continues.

또한, 자동 변속기에 있어서는 다수의 유성기어셋트를 동일축상에 배치하는 1축 형식과 다수의 유성기어셋트를 상호 평행하게 배치되는 2개의 회전축상에 배치하는 2축 형식으로 대분된다.Moreover, in the automatic transmission, it is divided into a two-axis type in which a plurality of planetary gear sets are arranged on the same axis and a plurality of planetary gear sets are arranged on two rotation axes arranged in parallel with each other.

이러한 자동 변속기에 있어서, 본 발명은 후자인 2축 자동 변속기에 관계하는데, 상기 2축 자동 변속기에 있어서는 입력축인 제1축상에 배치된 주변속부에서 1차적으로 변속하여 출력하면 상기 제1축과 일정간격을 두고 평행하게 배치되는 제2축상에 배치된 부변속부에서 회전동력을 전달받아 2차적으로 변속하여 출력함으로써, 요구되는 변속단으로 변속을 실행하게 되는 것이다.In such an automatic transmission, the present invention relates to the latter two-axis automatic transmission. In the two-axis automatic transmission, when the first gear shifts and outputs at a peripheral speed disposed on a first shaft, which is an input shaft, the first and second shafts are constant. By receiving the rotational power from the secondary transmission disposed on the second axis arranged in parallel at intervals and shifting the secondary output, the shift is performed to the required shift stage.

그리고 상기 주변속부에서 부변속부로 동력을 전달함에 있어서는 체인 또는 기어전동방식에 의하여 이루어지게 되는데, 본 발명은 기어 전동방식에 관계한다.And in the transmission of power from the peripheral speed to the sub-speed transmission is made by a chain or gear transmission method, the present invention relates to a gear transmission method.

주변속부에서 부변속부로 동력을 전달함에 있어서, 종래에는 도 5에서와 같이 부변속부를 형성하는 유성기어셋트(100)의 링기어(102)와 주변속부의 출력부재인 트랜스퍼 드라이브 기어(104)의 사이에 중간 동력전달기어(106)가 배치된다.In transmitting power from the peripheral speed portion to the sub transmission portion, the ring gear 102 of the planetary gear set 100 and the transfer drive gear 104 which is the output member of the peripheral speed portion, which forms a secondary transmission portion, as shown in FIG. Intermediate power transmission gear 106 is disposed therebetween.

상기에서 부변속부를 형성하는 유성기어셋트(100)는 링기어(102), 유성 캐리어(108), 선기어(110)로 이루어지는 3개의 회전요소를 구비하며, 상기 링기어(102)가 항시 입력요소로 작동하게 된다.The planetary gear set 100 forming the sub transmission portion includes three rotation elements consisting of a ring gear 102, a planet carrier 108, and a sun gear 110, and the ring gear 102 is always an input element. Will work.

그리고 상기에서 중간 동력전달기어(106)는 원통부(112)의 일측에 보스(114)가 형성되는 형태인 브레이크 드럼과 같은 형상으로 이루어지며, 상기 보스(114) 부분이 구름부재(116)인 베어링을 개재시켜 지지축인 제2축(118)상에 회전 자유롭게 고정된다.And the intermediate power transmission gear 106 is made of a shape such as a brake drum in which the boss 114 is formed on one side of the cylindrical portion 112, the boss 114 portion is a rolling member 116 The bearing is rotatably fixed on the second shaft 118 through the bearing.

또한, 상기 원통부(112)의 내, 외경부에는 각각 기어가 형성되어 외경 기어부는 주변속부의 트랜스퍼 드라이브 기어(104)와 기어 결합되며, 내경 기어부는 링기어(102)의 일측을 연장하여 형성된 연장부의 외경부에 형성한 기어부와 기어 결 합된다.In addition, gears are formed in the inner and outer diameter portions of the cylindrical portion 112, respectively, and the outer diameter gear portion is coupled to the transfer drive gear 104 of the peripheral speed portion, and the inner diameter gear portion is formed by extending one side of the ring gear 102. Gears and gears are formed on the outer diameter of the extension.

이에 따라 상기 트랜스퍼 드라이브 기어(104)의 회전동력은 상기 중간 동력전달기어(106)를 통해 링기어(102)로 전달되는 것이다.Accordingly, the rotational power of the transfer drive gear 104 is transmitted to the ring gear 102 through the intermediate power transmission gear 106.

그러나 상기와 같은 동력전달구조에 있어서는 중간 동력전달기어의 부피가 크기 때문에 이의 제작을 위해서는 부피가 큰 단조 금형을 제작하여야 하며, 다수의 기어부를 형성하여야 하는 바, 가공 공수 및 그 비용이 크게 상승한다는 문제점을 내포하고 있다.However, in the power transmission structure as described above, since the volume of the intermediate power transmission gear is large, a large forging die must be manufactured for its production, and a large number of gear parts must be formed. There is a problem.

또한, 상기 중간 동력전달기어와 링기어를 별도 관리하여야 하는 바, 물류, 보관 및 이송등에 대한 비용이 과대하게 소요된다는 문제점을 내포하고 있다. In addition, the intermediate power transmission gear and the ring gear have to be managed separately, which implies an excessive cost for logistics, storage and transport.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 제1축상의 주변속부로부터 전달되는 회전동력을 제2축상의 부변속부로 전달하는 중간 동력전달기어의 구성을 간단히 하여 조립공정을 단순화하고, 형상의 단순화하여 중량 저감 및 단조 금형비 절감하여 생산원가를 크게 절감할 수 있도록 한 차량용 2축 자동 변속기의 중간 동력전달기어셋트를 제공함에 있다.Therefore, the present invention has been invented to solve the above problems, the object of the present invention is to simplify the configuration of the intermediate power transmission gear for transmitting the rotational power transmitted from the peripheral speed on the first axis to the secondary transmission on the second axis By simplifying the assembly process, and by simplifying the shape to reduce the weight and forging mold cost, to provide a medium power transmission gear set of a two-axis automatic transmission for the vehicle to greatly reduce the production cost.

상기의 목적을 실현하기 위하여 본 발명은, 청구범위 제1항에서와 같이, 입력축인 제1축상에 배치된 주변속부에서 1차적으로 변속하여 출력하면 상기 제1축과 일정간격을 두고 평행하게 배치되는 제2축상에 배치된 부변속부에서 회전동력을 전달받아 2차적으로 변속하여 출력하는 2축 자동 변속기에 있어서, 상기 주변속부의 트랜스퍼 드라이브 기어와 부변속부의 유성기어셋트의 피니언 사이에 개재되는 중간 동력전달기어와, 상기 중간 동력전달기어를 제2축에 회전 가능하게 고정시켜 주는 보스부재를 배치하여 이루어지며, 상기 중간 동력전달기어는 청구범위 제2항에서와 같이 일정 폭을 가지고 원통형으로 이루어지는 본체부의 일측 내경부에 기어부가 형성되어 유성기어셋트의 피니언과 치합되고, 상기 기어부 반대측의 환형 돌출부의 외주면에 기어부가 형성되어 주변속부의 트랜스퍼 드라이브 기어와 치합되고, 상기 중간 동력전달기어의 내,외경부에 형성되는 기어부는 청구범위 제3항에서와 같이, 비틀림 방향이 반대로 형성됨을 특징으로 한다.In order to achieve the above object, the present invention, as shown in claim 1, is arranged in parallel with a predetermined interval when the output is primarily shifted from the peripheral speed portion disposed on the first axis, which is an input shaft A two-axis automatic transmission that receives the rotational power from the secondary transmission portion disposed on the second shaft to be secondly shifted and outputted, interposed between the transfer drive gear of the peripheral speed and the pinion of the planetary gear set of the secondary transmission And an intermediate power transmission gear and a boss member for rotatably fixing the intermediate power transmission gear to the second shaft, the intermediate power transmission gear having a predetermined width and having a cylindrical shape as in claim 2. The gear part is formed in one inner diameter part of the main body part, and is engaged with the pinion of the planetary gear set, and on the outer circumferential surface of the annular projection part opposite to the gear part The gear part is formed to be engaged with the transfer drive gear of the peripheral speed, and the gear part formed in the inner and outer diameter parts of the intermediate power transmission gear is characterized in that the torsional direction is formed in the opposite direction as in claim 3.

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상기 보스부재는 청구범위 제4항에서와 같이, 원판형 부재로서 내경부는 폭이 큰 보스부로 형성되어 축방향과 반경방향으로의 하중을 지지하여 줄 수 있는 구름부재를 개재시켜 제2축상에 회전 가능하게 고정되고, 상기 보스부에서 반경방향으로 돌출되는 원판부의 외경부는 중간 동력전달기어의 일측 내경부에 삽입 고정됨을 특징으로 한다.The boss member, as in claim 4, is a disk-shaped member whose inner diameter is formed by a boss having a wide width and interposed thereon a rolling member capable of supporting a load in the axial direction and the radial direction on the second axis. Is rotatably fixed, the outer diameter portion of the disc portion protruding radially from the boss portion is characterized in that the insertion and fixed to one inner diameter portion of the intermediate power transmission gear.

상기 중간 동력전달기어와 보스부재를 결합함에 있어서는 청구범위 제5항에서와 같이, 중간 동력전달기어의 일측 내경부에 조립홈을 형성하고, 이의 조립홈에 보스부재의 원판부 외주측을 억지 삽입하여 결합함을 특징으로 한다.In the coupling of the intermediate power transmission gear and the boss member, as shown in claim 5, an assembling groove is formed in one inner diameter of the intermediate power transmission gear, and the outer peripheral side of the disc part of the boss member is forcibly inserted in the assembly groove thereof. It is characterized by combining.

상기 중간 동력전달기어와 보스부재를 결합함에 있어서는 청구범위 제6항에서와 같이, 중간 동력전달기어의 일측 내경부에 조립홈을 형성하고, 이의 조립홈에 보스부재의 원판부 외주측을 억지 삽입한 상태에서 그 후측에 스냅링을 배치하여 결합함을 특징으로 한다.In the coupling of the intermediate power transmission gear and the boss member, as shown in claim 6, an assembly groove is formed in one inner diameter of the intermediate power transmission gear, and the outer peripheral side of the disc part of the boss member is forcibly inserted in the assembly groove thereof. In one state it is characterized by engaging by placing a snap ring on the rear side.

상기 중간 동력전달기어와 보스부재를 결합함에 있어서는 청구범위 제7항에서와 같이, 중간 동력전달기어의 일측 내경부에 기어부를 형성하고, 보스부재의 원판부 외주면에 기어부를 형성하여 상호 기어 결합하고, 상기 기어부의 중앙부에 원주방향으로 링 홈을 형성하여 상기 링 홈에 스냅링을 배치하여 결합함을 특징으로 한다.In the coupling of the intermediate power transmission gear and the boss member, as shown in claim 7, a gear part is formed in one inner diameter of the intermediate power transmission gear, and a gear part is formed on the outer peripheral surface of the disc part of the boss member so as to engage with each other. And, by forming a ring groove in the circumferential direction in the center of the gear portion, it is characterized in that by placing a snap ring in the ring groove.

상기와 같이 본 발명은, 중간 동력전달기어가 종래의 링기어 역할을 동시에 실시함으로써, 그 구성을 간단히 함과 동시에 링기어의 내,외경부에 가공되는 기어부를 생략할 수 있는 바, 가공공수 및 그 비용을 크게 절감할 수 있게 된다.As described above, according to the present invention, the intermediate power transmission gear simultaneously performs the role of a conventional ring gear, thereby simplifying the construction and omitting the gear portion to be machined in the inner and outer diameter portions of the ring gear. The cost can be greatly reduced.

그리고 상기 중간 동력전달기어와 보스부재를 별도 제작함으로써, 단조 금형의 크기를 줄여 단조 금형의 제작 비용을 절감할 수 있으며, 부품의 크기가 작아지기 때문에 물류 보관 및 이송이 편리하여 그에 따른 비용을 줄일 수 있게 된다.In addition, by separately manufacturing the intermediate power transmission gear and the boss member, it is possible to reduce the size of the forging die to reduce the production cost of the forging die, and because the size of the parts are reduced, convenient logistics storage and transport, thereby reducing the cost It becomes possible.

또한, 중간 동력전달기어와 보스부재의 결합시 스냅링을 적용하여 고정하는 경우에는 보다 견고하게 축방향 이동을 규제할 수 있게 된다. In addition, when fixing by applying a snap ring when the intermediate power transmission gear and the boss member is coupled, it is possible to more firmly regulate the axial movement.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 1은 본 발명의 적용부위 나타내기 위한 2축 자동 변속기의 개략 구성도서, 제1축(2)상에 배치되어 있는 제1, 2 유성기어 셋트(4)(6)로 이루어지는 주 변속부(M)와, 상기 제1축(2)과 일정간격을 두고 평행하게 배치되어 있는 제2축(8)상 에 배치되는 제3 유성기어셋트(10)로 이루어지는 부변속부(S)를 포함하여 이루어진다.1 is a schematic configuration diagram of a two-axis automatic transmission for showing the application of the present invention, the main transmission portion consisting of the first and second planetary gear sets (4) (6) disposed on the first shaft ( M) and the sub transmission part S which consists of the 3rd planetary gear set 10 arrange | positioned on the 2nd axis 8 arrange | positioned in parallel with the said 1st shaft 2 at predetermined intervals, Is done.

상기 주변속부(M)의 제1축(2)은 입력축으로서, 토크 컨버터(TC)의 터빈(T)으로부터 동력을 전달받아 제1, 2 유성기어셋트(4)(6)로 토오크를 전달하고, 이들 제1, 2 유성기어셋트(4)(6)의 상호 보완적인 작동으로 변속이 이루어져 제1 유성기어셋트(4)의 유성 캐리어(12)와 연결되어 있는 트랜스퍼 드라이브 기어(14)를 통해 출력이 이루어진다.The first shaft 2 of the peripheral speed M is an input shaft, receives power from the turbine T of the torque converter TC, and transmits torque to the first and second planetary gear sets 4 and 6. Complementary operation of these first and second planetary gear sets 4 and 6 is carried out through a transfer drive gear 14 connected to the planet carrier 12 of the first planetary gear set 4. The output is made.

그리고 상기 주변속부(M)는 출력요소로 작동하는 제1 유성캐리어(12)와 제2 링기어(16)를 고정적으로 연결하고, 제1 링기어(18)와 제2 유성캐리어(20)를 고정적으로 연결하되, 제1 선기어(22)와 제2 유성캐리어(16),그리고 제2 선기어(24)가 제1,2,3 클러치(C1)(C2)(C3)를 개재시켜 각각 제1축(2)과 가변 연결되어 3개의 입력요소를 보유하게 된다.The peripheral speed portion M is fixedly connected to the first planetary carrier 12 and the second ring gear 16, which operate as output elements, and connects the first ring gear 18 and the second planetary carrier 20 to each other. The first sun gear 22, the second planet carrier 16, and the second sun gear 24 are fixedly connected to each other by the first, second and third clutches C1, C2, and C3. It is variably connected with the shaft 2 to hold three input elements.

또한, 상기 제1 링기어(18)와 제2 유성캐리어(20)를 연결하는 연결부재(26)가 제1 브레이크(B1)와 제1 원웨이 클러치(F1)에 의하여 변속기 하우징(H)에 가변 연결되고, 상기 제2 선기어(24)가 제2 브레이크(B2)에 의하여 변속기 하우징(H)에 가변 고정되어 2개의 고정요소를 보유하게 된다.In addition, a connecting member 26 connecting the first ring gear 18 and the second planet carrier 20 to the transmission housing H by the first brake B1 and the first one-way clutch F1. The second sun gear 24 is variably connected to the transmission housing H by the second brake B2 to hold two fixing elements.

그리고 상기 부변속부(S)는 제3 유성기어셋트(10)의 제3 링기어(30)가 입력요소가 되고, 제3 선기어(32)가 출력요소로 작동하는 제3 유성캐리어(34)와 제4 클러치(C4)를 개재시켜 연결됨과 동시에 제3 브레이크(B3) 및 제2 원웨이 클러치(F2)에 의하여 변속기 하우징(H)과 연결되는 구성이다.In addition, the sub transmission part S has a third planetary gear 34 in which a third ring gear 30 of the third planetary gear set 10 is an input element and a third sun gear 32 operates as an output element. And the fourth clutch C4 are connected to each other, and are connected to the transmission housing H by the third brake B3 and the second one-way clutch F2.

상기에서 출력요소로 작동하는 제3 유성 캐리어(34)는 일측 단부에 출력기어(36)가 연결되며, 상기 출력기어(36)는 미도시한 공지의 차동장치로 동력을 전달하여 구동륜을 구동시키게 된다.The third planetary carrier 34, which operates as an output element, is connected to an output gear 36 at one end thereof, and the output gear 36 transmits power to a known differential device, not shown, to drive the driving wheels. do.

이에 따라 상기 제1, 2, 3, 4 클러치(C1 ~ C4)와 제1, 2, 3 브레이크(B1 ~ B2) 및 제1, 2 원웨이 클러치(F1)(F2)가 선택적으로 작동하면서 전진 5속 또는 전진 6속과 후진 1속의 변속단을 구현할 수 있게 되는 것이다.Accordingly, the first, second, third and fourth clutches C1 to C4, the first, second and third brakes B1 to B2, and the first and second one-way clutches F1 and F2 are selectively operated to move forward. It will be able to realize a five-speed or six forward speed and one reverse speed.

상기의 주변속부(M)와 부변속부(S)의 구성은 상기의 실시예에 한정되는 것이 아니라 제1축(2)상의 주변속부(M)에서 제2축(8)상의 부변속부(S)로 동력이 전달되는 동력전달경로 즉, 본 발명이 관계하는 부분을 설명하기 위하여 편의상 개시하고 있는 것이므로 큰 의미를 부여하지는 않는다.The configuration of the peripheral speed portion M and the sub transmission portion S is not limited to the above embodiment, but the secondary speed change portion (2) on the second shaft 8 in the peripheral speed portion M on the first axis 2. Since power transmission paths through which power is transmitted to S), that is, for convenience of describing the parts to which the present invention relates, are not given a great meaning.

이러한 2축 자동 변속기에 있어서는 주변속부(M)의 회전동력을 부변속부(S)로 전달하기 위한 중간 동력전달기어셋트(40)가 적용되는데, 상기 중간 동력전달기어셋트(40)는 도2에서와 같이, 주변속부(M)의 트랜스퍼 드라이브 기어(14)와 부변속부(S)를 형성하는 유성기어셋트(10) 사이에 배치된다.In the two-axis automatic transmission, an intermediate power transmission gear set 40 for transmitting the rotational power of the peripheral speed M to the secondary transmission S is applied, and the intermediate power transmission gear set 40 is shown in FIG. 2. As in, it is disposed between the transmission drive gear 14 of the peripheral speed (M) and the planetary gear set 10 to form the sub transmission (S).

상기 중간 동력전달기어셋트(40)는 중간 동력전달기어(42)와 상기 중간 동력전달기어(42)를 제2축(8)에 회전 가능하게 고정시켜 주는 보스부재(44)를 포함하여 이루어진다.The intermediate power transmission gear set 40 includes an intermediate power transmission gear 42 and a boss member 44 for rotatably fixing the intermediate power transmission gear 42 to the second shaft 8.

상기 중간 동력전달기어(42)는 일정 폭을 가지고 원통형으로 이루어지는 본체부(46)의 일측 내경부에 기어부가 형성되어 유성기어셋트(10)의 피니언(48)와 치합됨으로써, 종래 링기어 역할을 수행하게 된다.The intermediate power transmission gear 42 has a predetermined width and a gear portion is formed at one inner diameter portion of the main body portion 46 made of a cylindrical shape and meshes with the pinion 48 of the planetary gear set 10, thereby serving as a conventional ring gear. Will perform.

상기 본체부(46)의 내경 기어부 반대측 외측에는 환형 돌출부(50)가 형성되어 그 외주면에 형성되는 기어부 주변속부(M)의 트랜스퍼 드라이브 기어(14)와 치합됨으로써, 트랜스퍼 드라이브 기어(14)의 회전동력을 유성기어셋트(10)로 전달하게 되는 것이다.An annular protrusion 50 is formed on the outer side opposite to the inner diameter gear portion of the main body portion 46 and meshes with the transfer drive gear 14 of the gear portion peripheral speed M formed on the outer circumferential surface thereof, thereby transferring the transfer drive gear 14. The rotational power of will be transmitted to the planetary gear set (10).

상기 중간 동력전달기어(42)의 내,외경부에 형성되는 기어부는 비틀림 방향을 서로 다르게 형성하여 축방향 하중이 상호 상쇄되도록 하는 것이 바람직하다.Gear parts formed in the inner and outer diameter portions of the intermediate power transmission gear 42 preferably form different torsional directions so that the axial loads cancel each other out.

상기 보스부재(44)는 원판형 부재로서 폭이 큰 보스부(52)는 축방향과 반경방향으로의 하중을 지지하여 줄 수 있는 구름부재(54)를 개재시켜 제2축(8)상에 고정되어 고정된 상태를 유지하는 제2축(8)으로부터 회전이 자유롭게 지지된다.The boss member 44 is a disk-shaped member having a wide boss portion 52 on the second shaft 8 via a rolling member 54 capable of supporting loads in the axial direction and the radial direction. Rotation is freely supported from the second shaft 8 which is fixed and maintains a fixed state.

상기 보스부재(44)의 원판부(56)의 외경부는 상기 중간 동력전달기어(42)의 일측 내경부에 형성된 조립홈(58)에 삽입 고정되면서 상기 중간 동력전달기어(42)를 지지하게 되는 것이다.The outer diameter portion of the disc portion 56 of the boss member 44 supports the intermediate power transmission gear 42 while being inserted into and fixed to the assembly groove 58 formed at one inner diameter portion of the intermediate power transmission gear 42. will be.

상기에서 중간 동력전달기어(42)와 보스부재(44)를 결합함에 있어서는 여러 방식이 있으나, 본 발명 제1 실시예인 도2 에서는 열박음(Shrinkage Fit)등에 의한 억지끼움 방식으로 고정시킨 상태를 도시하고 있다.In the above, there are various methods for coupling the intermediate power transmission gear 42 and the boss member 44. However, in FIG. 2 of the first embodiment of the present invention, a state in which the intermediate power transmission gear 42 and the boss member 44 are fixed in the interference fit method such as shrink fit is shown. Doing.

도 3은 본 발명에 의한 제2 실시예를 도시한 것으로서, 상기 중간 동력전달기어(42)와 보스부재(44)를 결합함에 있어서, 상기 중간 동력전달기(42)의 내경부에 내륜 기어부를 형성하고, 보스부재(44)의 원판부(56)의 외주면에 상기 기어부에 대응하는 기어부를 형성하여 상호 기어 결합하되, 축방향의 이동을 규제하기 위하여 기어부의 중앙부에 원주방향의 링 홈(60)을 형성하고, 이의 링 홈(60)에 스냅 링(62)을 적용한 것이다.Figure 3 shows a second embodiment according to the present invention, in coupling the intermediate power transmission gear 42 and the boss member 44, the inner ring gear portion in the inner diameter of the intermediate power transmission 42 And gears corresponding to the gears are formed on the outer circumferential surface of the disk portion 56 of the boss member 44 so that the gears are coupled to each other, and the ring grooves in the circumferential direction are formed at the center of the gear part in order to restrict the movement in the axial direction. 60 is formed, and the snap ring 62 is applied to the ring groove 60 thereof.

도 4는 본 발명에 의한 제3 실시예를 도시한 것으로서, 상기 중간 동력전달기어(42)와 보스부재(44)를 결합함에 있어서, 상기 제1 실시예에서와 같이 상기 보스부재(44)의 원판부(56)의 외경부를 상기 중간 동력전달기어(42)의 일측 내경부에 형성된 조립홈(58)에 삽입 고정하되, 후측에 스냅링(62)를 적용함으로써, 고정상태를 더욱 견고하고 축방향 이동을 규제하게 된다.Figure 4 shows a third embodiment according to the present invention, in the coupling of the intermediate power transmission gear 42 and the boss member 44, as in the first embodiment of the boss member 44 The outer diameter portion of the disc portion 56 is inserted into and fixed to the assembling groove 58 formed in one inner diameter portion of the intermediate power transmission gear 42, and by applying a snap ring 62 at the rear side, the fixing state is more firm and axially It will regulate the movement.

상기에서 본 발명의 바람직한 실시 예를 개시하고 있으나, 본 발명은 상기 실시예에 한정되지 아니하며, 본 발명의 실시 예로부터 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 발명하여 균등하다고 인정되는 범위의 모든 변경을 포함한다.Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and those of ordinary skill in the art can easily invent and equalize the same from the embodiments of the present invention. It includes all changes in the ranges that become.

도 1은 본 발명이 적용된 자동 변속기의 개략도.1 is a schematic diagram of an automatic transmission to which the present invention is applied.

도 2는 본 발명의 제1 실시예에 의한 요부 확대 단면도.Figure 2 is an enlarged cross-sectional view of the main portion according to the first embodiment of the present invention.

도 3은 본 발명의 제2 실시예에 의한 요부 확대 단면도.Figure 3 is an enlarged cross-sectional view of the main portion according to the second embodiment of the present invention.

도 4는 본 발명의 제3 실시예에 의한 요부 확대 단면도.Figure 4 is an enlarged cross-sectional view of the main part according to the third embodiment of the present invention.

도 5는 종래 요부 확대 단면도이다.5 is an enlarged cross-sectional view of a conventional main part.

Claims (7)

입력축인 제1축상에 배치된 주변속부에서 1차적으로 변속하여 출력하면 상기 제1축과 일정간격을 두고 평행하게 배치되는 제2축상에 배치된 부변속부에서 회전동력을 전달받아 2차적으로 변속하여 출력하는 2축 자동 변속기에 있어서, When the output is shifted primarily from the peripheral speed portion disposed on the first axis, which is an input shaft, the secondary transmission is received by the rotational power from the secondary speed shift portion disposed on the second axis arranged in parallel with the first axis. In the 2-axis automatic transmission outputting 상기 주변속부의 트랜스퍼 드라이브 기어와 부변속부의 유성기어셋트의 피니언 사이에 개재되는 중간 동력전달기어와, 상기 중간 동력전달기어를 제2축에 회전 가능하게 고정시켜 주는 보스부재를 배치하여 이루어지며,An intermediate power transmission gear interposed between the transfer drive gear of the peripheral speed portion and the pinion of the planetary gear set of the secondary transmission portion, and a boss member rotatably fixing the intermediate power transmission gear to the second shaft; 상기 중간 동력전달기어는 일정 폭을 가지고 원통형으로 이루어지는 본체부의 일측 내경부에 기어부가 형성되어 유성기어셋트의 피니언과 치합되고, 상기 기어부 반대측의 환형 돌출부의 외주면에 기어부가 형성되어 주변속부의 트랜스퍼 드라이브 기어와 치합되고, The intermediate power transmission gear has a predetermined width and a gear portion is formed at one inner diameter of the cylindrical body portion and is engaged with the pinion of the planetary gear set. Mesh with the drive gear, 상기 중간 동력전달기어의 내,외경부에 형성되는 기어부는 비틀림 방향이 반대로 형성됨을 특징으로 하는 차량용 2축 자동 변속기의 중간 동력전달기어셋트.The gear unit formed in the inner and outer diameters of the intermediate power transmission gear is an intermediate power transmission gear set of a two-axis automatic transmission for a vehicle, characterized in that the torsional direction is formed in reverse. 삭제delete 삭제delete 제1항에 있어서, 보스부재는 원판형 부재로서 내경부는 폭이 큰 보스부로 형성되어 축방향과 반경방향으로의 하중을 지지하여 줄 수 있는 구름부재를 개재시켜 제2축상에 회전 가능하게 고정되고, 상기 보스부에서 반경방향으로 돌출되는 원판부의 외경부는 중간 동력전달기어의 일측 내경부에 삽입 고정됨을 특징으로 하는 차량용 2축 자동 변속기의 중간 동력전달기어셋트.2. The boss member according to claim 1, wherein the boss member is a disk-shaped member, and the inner diameter portion is formed of a boss portion having a large width so as to be rotatably fixed on the second shaft via a rolling member capable of supporting the load in the axial direction and the radial direction. And the outer diameter portion of the disc portion protruding radially from the boss portion is inserted and fixed to one inner diameter portion of the intermediate power transmission gear. 제4항에 있어서, 중간 동력전달기어와 보스부재를 결합하되, 중간 동력전달기어의 일측 내경부에 조립홈을 형성하고, 이의 조립홈에 보스부재의 원판부 외주측을 억지 삽입하여 결합함을 특징으로 하는 차량용 2축 자동 변속기의 중간 동력전달기어셋트.5. The method of claim 4, wherein the intermediate power transmission gear and the boss member are coupled to each other, and an assembly groove is formed in the inner diameter of one side of the intermediate power transmission gear, and the outer peripheral side of the disc part of the boss member is forcibly inserted into the assembly groove thereof. A medium power transmission gear set for a two-axis automatic transmission for a vehicle. 제4항에 있어서, 중간 동력전달기어와 보스부재를 결합하되, 중간 동력전달기어의 일측 내경부에 조립홈을 형성하고, 이의 조립홈에 보스부재의 원판부 외주측을 억지 삽입한 상태에서 그 후측에 스냅링을 결합하여 이루어짐을 특징으로 하는 차량용 2축 자동 변속기의 중간 동력전달기어셋트.5. The method of claim 4, wherein the intermediate power transmission gear and the boss member are coupled to each other, and an assembly groove is formed in the inner diameter of one side of the intermediate power transmission gear, and the outer peripheral side of the disc part of the boss member is forcibly inserted into the assembly groove thereof. An intermediate power transmission gear set for a two-axis automatic transmission for a vehicle, characterized in that the snap ring is coupled to the rear side. 제4항에 있어서, 중간 동력전달기어와 보스부재를 결합하되, 중간 동력전달기어의 일측 내경부에 기어부를 형성하고, 보스부재의 원판부 외주면에 기어부를 형성하여 상호 기어 결합하고, 상기 양 기어부의 중앙부에 원주방향으로 링 홈을 형성하여 상기 링 홈에 스냅링을 결합하여 이루어짐을 특징으로 하는 차량용 2축 자동 변속기의 중간 동력전달기어셋트.5. The method of claim 4, wherein the intermediate power transmission gear and the boss member are coupled to each other, the gear part is formed at an inner diameter portion of one side of the intermediate power transmission gear, the gear part is formed on the outer peripheral surface of the disc part of the boss member, and the two gears are coupled to each other. A middle power transmission gear set for a two-axis automatic transmission for a vehicle, characterized in that the ring groove is formed in the circumferential direction at the center of the part, and the snap ring is coupled to the ring groove.
KR1020080077585A 2008-08-07 2008-08-07 Medium power transmission gear set of 2 axis automatic transmission for vehicle Expired - Fee Related KR100992813B1 (en)

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