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KR101282691B1 - Power tain for electric vehicle - Google Patents

Power tain for electric vehicle Download PDF

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Publication number
KR101282691B1
KR101282691B1 KR1020110074839A KR20110074839A KR101282691B1 KR 101282691 B1 KR101282691 B1 KR 101282691B1 KR 1020110074839 A KR1020110074839 A KR 1020110074839A KR 20110074839 A KR20110074839 A KR 20110074839A KR 101282691 B1 KR101282691 B1 KR 101282691B1
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KR
South Korea
Prior art keywords
stage
power
output gear
power transmission
gear
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KR1020110074839A
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Korean (ko)
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KR20130013283A (en
Inventor
김백유
김연호
김완수
김기남
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현대자동차주식회사
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Priority to KR1020110074839A priority Critical patent/KR101282691B1/en
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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
    • 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
    • F16H3/089—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 all of the meshing gears being supported by a pair of parallel shafts, one being the input shaft and the other the output shaft, there being no countershaft involved
    • 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
    • F16H3/091—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 including a single countershaft
    • 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
    • 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
    • F16H3/10—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 with one or more one-way clutches as an essential feature
    • 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
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2033—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with one engaging means

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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 전기자동차용 2단 변속기에 관한 것으로서, 더욱 상세하게는 1개의 마찰클러치와 2개의 원웨이 클러치 또는 1개의 양방향 클러치를 이용하여 2단 변속 구현이 가능하도록 한 새로운 구조의 전기자동차용 2단 변속기에 관한 것이다.
이를 위해, 본 발명은 전기자동차 주행용 모터의 축과 연결된 입력축과; 상기 입력축에 나란히 장착되는 1단 입력기어 및 2단 입력기어와; 1단 입력기어와 맞물리는 1단 출력기어와; 2단 입력기어와 맞물리는 2단 출력기어와; 상기 1단 출력기어 및 2단 출력기어의 중심에 회전 가능하게 삽입되어 입력축과 평행하게 배열되는 동력전달축과; 상기 1단 출력기어의 중심에 장착되어, 1단 출력기어의 동력을 동력전달축에 전달 또는 해제하는 1단 동력연결수단과; 상기 2단 출력기어의 측부 및 중심에 장착되어, 2단 출력기어의 동력을 동력전달축에 전달 또는 해제하는 2단 동력연결수단과; 상기 동력전달축의 타끝단을 지지하는 제1베어링과 1단 동력전달수단 사이에 장착되는 동력전달매개기어와; 상기 동력전달매개기어와 맞물리는 출력기어를 갖는 출력축; 으로 구성된 것을 특징으로 하는 전기자동차용 2단 변속기를 제공한다.The present invention relates to a two-speed transmission for an electric vehicle, and more particularly, to a two-speed electric vehicle having a new structure enabling two-speed implementation using one friction clutch and two one-way clutches or one two-way clutch. It is only about the transmission.
To this end, the present invention and the input shaft connected to the shaft of the motor for driving the electric vehicle; A first stage input gear and a second stage input gear mounted side by side on the input shaft; A first output gear meshed with the first input gear; A two-stage output gear meshing with the two-stage input gear; A power transmission shaft rotatably inserted in the center of the first stage output gear and the second stage output gear and arranged in parallel with the input shaft; A first stage power connecting means mounted at the center of the first stage output gear to transmit or release power of the first stage output gear to a power transmission shaft; Two-stage power connecting means mounted on the side and the center of the two-stage output gear to transfer or release the power of the two-stage output gear to the power transmission shaft; A power transmission medium gear mounted between the first bearing supporting the other end of the power transmission shaft and the first stage power transmission means; An output shaft having an output gear meshed with the power transmission medium gear; It provides a two-speed transmission for an electric vehicle, characterized in that consisting of.

Description

전기자동차용 2단 변속기{Power tain for electric vehicle}Two Speed Transmission for Electric Vehicles {Power tain for electric vehicle}

본 발명은 전기자동차용 2단 변속기에 관한 것으로서, 더욱 상세하게는 1개의 마찰클러치와 2개의 원웨이 클러치 또는 1개의 양방향 클러치를 이용하여 2단 변속 구현이 가능하도록 한 새로운 구조의 전기자동차용 2단 변속기에 관한 것이다.
The present invention relates to a two-speed transmission for an electric vehicle, and more particularly, to a two-speed electric vehicle having a new structure enabling two-speed implementation using one friction clutch and two one-way clutches or one two-way clutch. It is only about the transmission.

일반적으로, 전기자동차는 가솔린이나 중유 등을 이용하는 가솔린 차량이나 디젤 차량과는 달리 전기를 동력원으로 사용함에 따라, 배기가스의 배출이 전혀 없는 친환경 차량을 말한다.In general, an electric vehicle, unlike gasoline or diesel vehicles using gasoline or heavy oil, refers to an eco-friendly vehicle that emits no exhaust gas at all by using electricity as a power source.

상기 전기자동차의 동력원은 고전압배터리로서, 재충전이 가능하고 대용량화가 가능한 니켈카드뮴, 니켈수소 및 리튬이온전지 등과 같은 이차 전지가 채택되고 있다.The power source of the electric vehicle is a high voltage battery, and rechargeable batteries such as nickel cadmium, nickel hydrogen, and lithium ion batteries, which can be recharged and have a large capacity, have been adopted.

전기자동차의 동력전달 구성 및 동작을 간략하게 살펴보면, 배터리로부터 출력되는 직류 전력을 교류 전력으로 변환시키는 인버터와, 인버터로부터의 교류 전력을 공급받아 회전력을 발생시키는 모터와, 모터로부터 연장된 입력축에 연결되어 회전력을 구동휠 측으로 전달하거나 차단하며 변속 역할을 하는 감속기을 포함하여 구성되고, 감속기의 출력기어를 갖는 출력축이 구동휠을 갖는 구동축으로 동력을 전달하여 전기자동차의 주행이 이루어진다.Briefly, the power transmission configuration and operation of an electric vehicle include: an inverter for converting DC power output from a battery into AC power, a motor for generating rotational power by receiving AC power from the inverter, and an input shaft extending from the motor. It is configured to include a reducer that transmits or blocks the rotational force to the drive wheel side and the shifting function, the output shaft having the output gear of the reducer transmits power to the drive shaft having the drive wheel is made to drive the electric vehicle.

상기 감속기는 대개 2단 변속기 가능한 변속기 파트로서, 2단 변속을 위하여 2개의 마찰클러치가 필요하며, 그에 따라 변속기의 부피가 커지는 단점이 있고, 제조원가가 증가하는 원인이 되고 있다.
The reducer is generally a two-speed transmission capable transmission part, and two friction clutches are required for two-speed transmission, and thus, the volume of the transmission is increased, resulting in an increase in manufacturing cost.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로서, 기존에 2개의 마찰틀러치를 채택한 것과 달리, 1개의 마찰클러치와 2개의 원웨이 클러치를 조합하거나, 또는 1개의 마찰클러치와 1개의 양방향 클러치를 조하하여, 2단의 변속 구현이 가능하면서도 변속기의 부피를 줄이는 동시에 제조 원가를 절감할 수 있는 새로운 구조의 전기자동차용 2단 변속기를 제공하는데 그 목적이 있다.
The present invention has been devised in view of the above, and unlike the conventional one employing two friction clutches, one friction clutch and two one-way clutches are combined, or one friction clutch and one bidirectional clutch are used. In other words, the purpose of the present invention is to provide a two-speed transmission for an electric vehicle having a new structure that can realize a two-speed transmission while reducing the volume of the transmission and at the same time reducing the manufacturing cost.

상기한 목적을 달성하기 위한 본 발명은: 전기자동차 주행용 모터의 축과 연결된 입력축과; 상기 입력축에 나란히 장착되는 1단 입력기어 및 2단 입력기어와; 1단 입력기어와 맞물리는 1단 출력기어와; 2단 입력기어와 맞물리는 2단 출력기어와; 상기 1단 출력기어 및 2단 출력기어의 중심에 회전 가능하게 삽입되어 입력축과 평행하게 배열되는 동력전달축과; 상기 1단 출력기어의 중심에 장착되어, 1단 출력기어의 동력을 동력전달축에 전달 또는 해제하는 1단 동력연결수단과; 상기 2단 출력기어의 측부 및 중심에 장착되어, 2단 출력기어의 동력을 동력전달축에 전달 또는 해제하는 2단 동력연결수단과; 상기 동력전달축의 타끝단을 지지하는 제1베어링과 1단 동력전달수단 사이에 장착되는 동력전달매개기어와; 상기 동력전달매개기어와 맞물리는 출력기어를 갖는 출력축; 으로 구성된 것을 특징으로 하는 전기자동차용 2단 변속기를 제공한다.The present invention for achieving the above object is an input shaft connected to the shaft of the motor for driving an electric vehicle; A first stage input gear and a second stage input gear mounted side by side on the input shaft; A first output gear meshed with the first input gear; A two-stage output gear meshing with the two-stage input gear; A power transmission shaft rotatably inserted in the center of the first stage output gear and the second stage output gear and arranged in parallel with the input shaft; A first stage power connecting means mounted at the center of the first stage output gear to transmit or release power of the first stage output gear to a power transmission shaft; Two-stage power connecting means mounted on the side and the center of the two-stage output gear to transfer or release the power of the two-stage output gear to the power transmission shaft; A power transmission medium gear mounted between the first bearing supporting the other end of the power transmission shaft and the first stage power transmission means; An output shaft having an output gear meshed with the power transmission medium gear; It provides a two-speed transmission for an electric vehicle, characterized in that consisting of.

본 발명의 일 구현예로서, 상기 1단 동력연결수단은 1단 출력기어의 내경부에 장착되어 중심을 지나는 동력전달축에 동력을 전달하거나 해제하는 제1원웨이 클러치로 채택되고, 상기 2단 동력연결수단은 2단 출력기어의 내경부에 장착되어 중심을 지나는 동력전달축에 동력을 전달하거나 해제하는 제2원웨이 클러치와, 동력전달축의 타끝단과 2단 출력기어의 측부 간에 연결되는 마찰클러치로 구성된 것을 특징으로 한다.In one embodiment of the present invention, the first stage power connecting means is adopted as a first one-way clutch mounted on the inner diameter of the first stage output gear to transfer or release power to the power transmission shaft passing through the center, the second stage The power connecting means is a second one-way clutch mounted on the inner diameter of the two-stage output gear to transfer or release power to the power transmission shaft passing through the center, and friction connected between the other end of the power transmission shaft and the side of the second output gear. It is characterized by consisting of a clutch.

바람직하게는, 상기 마찰클러치와 제2원웨이 클러치 사이의 동력전달축에 회전 지지를 위한 제2베어링이 장착된 것을 특징으로 한다.Preferably, a second bearing for rotational support is mounted on the power transmission shaft between the friction clutch and the second one-way clutch.

본 발명의 다른 구현예로서, 상기 1단 동력연결수단은 1단 출력기어의 내경부에 장착되어 중심을 지나는 동력전달축에 동력을 전달하거나 해제하는 양방향 클러치로 채택되고, 상기 2단 동력연결수단은 동력전달축의 타끝단과 2단 출력기어의 측부 간에 연결되는 마찰클러치와, 2단 출력기어의 내경부에 장착되어 중심을 지나는 동력전달축을 회전지지하는 베어링으로 구성된 것을 특징으로 한다.In another embodiment of the present invention, the first stage power connecting means is adopted as a two-way clutch mounted on the inner diameter of the first stage output gear to transfer or release power to the power transmission shaft passing through the center, the second stage power connecting means Is characterized by consisting of a friction clutch connected between the other end of the power transmission shaft and the side of the second output gear, and a bearing mounted on the inner diameter of the second output gear to support the power transmission shaft passing through the center.

바람직하게는, 상기 양방향 클러치에는 동력 연결을 위한 회전 방향을 선택하기 위하여, 양방향 클러치의 변경레버를 시계 또는 시계반대방향으로 조작하는 스위치 제어기가 연결되는 것을 특징으로 한다.
Preferably, the bidirectional clutch is connected to a switch controller for operating the change lever of the bidirectional clutch clockwise or counterclockwise to select a rotation direction for the power connection.

상기한 과제 해결 수단을 통하여, 본 발명은 다음과 같은 효과를 제공한다.Through the above-mentioned means for solving the problems, the present invention provides the following effects.

본 발명에 따르면, 기존에 2개의 마찰클러치를 채택한 것과 달리, 1개의 마찰클러치와 2개의 원웨이 클러치를 조합하거나, 또는 1개의 마찰클러치와 1개의 양방향 클러치를 조합하여, 2단의 변속 구현이 가능하고, 큰 부피의 마찰클러치를 줄여서 원웨이 또는 양방향을 클러치를 사용함에 따라 변속기의 부피를 줄일 수 있으며, 고가의 마찰클러치에 비하여 제조 원가를 절감할 수 있다.
According to the present invention, unlike two conventional clutches, one friction clutch and two one-way clutches are combined, or one friction clutch and one two-way clutch are combined. It is possible to reduce the volume of the transmission by using a one-way or two-way clutch by reducing a large volume friction clutch, it is possible to reduce the manufacturing cost compared to expensive friction clutch.

도 1은 본 발명에 따른 전기자동차용 2단 변속기의 일 실시예를 나타내는 동력전달계통도,
도 2는 본 발명에 따른 전기자동차용 2단 변속기의 다른 실시예를 나타내는 동력전달계통도,
도 3은 본 발명에 따른 전기자동차용 2단 변속기에 적용되는 원웨이 클러치 구조를 보여주는 개략도,
도 4a 내지 도 4c는 본 발명에 따른 전기자동차용 2단 변속기에 적용되는 양방향 클러치 구조를 보여주는 개략도.1 is a power transmission system showing an embodiment of a two-speed transmission for an electric vehicle according to the present invention;
2 is a power transmission system showing another embodiment of a two-speed transmission for an electric vehicle according to the present invention;
3 is a schematic view showing a one-way clutch structure applied to a two-speed transmission for an electric vehicle according to the present invention;
4A to 4C are schematic views showing a bidirectional clutch structure applied to a two-speed transmission for an electric vehicle according to the present invention.

이하, 본 발명의 바람직한 실시예를 첨부도면을 참조로 상세하게 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명은 기존에 2개의 마찰클러치를 채택한 것과 달리, 1개의 마찰클러치와 2개의 원웨이 클러치를 조합하거나, 또는 1개의 마찰클러치와 1개의 양방향 클러치를 조합하여, 2단의 변속 구현이 가능한 새로운 구조의 전기자동차용 2단 변속기를 제공하고자 한 것이다.According to the present invention, unlike two conventional clutches, a combination of one friction clutch and two one-way clutches or a combination of one friction clutch and one two-way clutch can be realized. It is to provide a two-speed transmission for the electric vehicle of the structure.

여기서, 본 발명의 전기자동차용 2단 변속기의 일 실시예로서, 1개의 마찰클러치와 2개의 원웨이 클러치를 조합한 구성을 살펴보면 다음과 같다.Here, as an embodiment of a two-speed transmission for an electric vehicle of the present invention, a configuration in which one friction clutch and two one-way clutches are combined is as follows.

전기자동차는 주행용 모터를 동력원으로 하여 주행을 하는 차량으로서, 주행용 모터와 차량의 주행휠 사이에는 모터의 동력을 감속하여 주행휠쪽으로 출력하는 감속기 즉, 2단 변속기가 설치된다.An electric vehicle is a vehicle that runs by using a driving motor as a power source, and a speed reducer, that is, a two-speed transmission, is provided between the driving motor and the traveling wheel of the vehicle to decelerate the power of the motor and output it to the traveling wheel.

상기 2단 변속기의 구성중 입력축(12)이 전기자동차 주행용 모터(10)의 축에 일체로 연결되고, 이 입력축(12)에 1단 입력기어(14)와 1단 입력기어(14)에 비하여 큰 기어로 채택된 2단 입력기어(16)가 나란히 장착된다.The input shaft 12 of the two-speed transmission is integrally connected to the shaft of the motor 10 for driving the electric vehicle, and the input shaft 12 is connected to the first stage input gear 14 and the first stage input gear 14. In comparison, a two-stage input gear 16 adopted as a large gear is mounted side by side.

또한, 상기 변속기 케이스내에는 입력축(12)과 평행하게 동력전달축(22)이 배열되는 바, 이 동력전달축(22)에는 1단 입력기어(14)와 맞물리는 1단 출력기어(18)와, 2단 입력기어(16)와 맞물리는 2단 출력기어(20)가 나란히 장착된다.In addition, a power transmission shaft 22 is arranged in parallel with the input shaft 12 in the transmission case, and the power transmission shaft 22 has a first stage output gear 18 engaged with the first stage input gear 14. And a two-stage output gear 20 meshing with the two-stage input gear 16.

이때, 상기 동력전달축(22)은 1단 출력기어(18) 및 2단 출력기어(20)의 중심에 회전 가능하게 삽입되어, 변속기 케이스내에서 입력축(12)과 평행하게 배열되는 상태가 된다.At this time, the power transmission shaft 22 is rotatably inserted in the center of the first stage output gear 18 and the second stage output gear 20, and is arranged in parallel with the input shaft 12 in the transmission case. .

특히, 상기 1단 출력기어(18)의 중심에는 1단 출력기어(18)의 동력을 동력전달축(22)에 전달 또는 해제하는 1단 동력연결수단(30)이 장착되고, 또한 상기 2단 출력기어(20)의 측부 및 중심에는 2단 출력기어(20)의 동력을 동력전달축(22)에 전달 또는 해제하는 2단 동력연결수단(40)이 장착된다.In particular, at the center of the first stage output gear 18 is equipped with a first stage power connecting means 30 for transmitting or releasing the power of the first stage output gear 18 to the power transmission shaft 22, and the second stage Side and center of the output gear 20 is equipped with a two-stage power connection means 40 for transmitting or releasing the power of the two-stage output gear 20 to the power transmission shaft (22).

즉, 상기 1단 출력기어(18)의 중심에는 1단 출력기어(18)의 동력을 동력전달축(22)에 전달 또는 해제하는 1단 동력연결수단(30)으로서 제1원웨이 클러치(32)가 장착되고, 또한 상기 2단 출력기어(20)의 측부 및 중심에는 2단 출력기어(20)의 동력을 동력전달축(22)에 전달 또는 해제하는 2단 동력연결수단(40)으로서, 마찰클러치(44)와 제2원웨이 클러치(42)가 장착된다.That is, the first one-way clutch 32 as the first stage power connecting means 30 for transmitting or releasing the power of the first stage output gear 18 to the power transmission shaft 22 at the center of the first stage output gear 18. And a two-stage power connecting means (40) for transmitting or releasing the power of the two-stage output gear (20) to the power transmission shaft (22) at the side and center of the two-stage output gear (20), The friction clutch 44 and the second one-way clutch 42 are mounted.

상기 1단 동력연결수단(30)으로 채택된 제1원웨이 클러치(32)는 1단 출력기어(18)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 동력을 전달하거나 해제하는 역할을 하게 된다.The first one-way clutch 32 adopted as the first stage power connecting means 30 is mounted on the inner diameter of the first stage output gear 18 to transmit or release power to the power transmission shaft 22 passing through the center. It will play a role.

상기 2단 동력연결수단(40)의 일 구성중 마찰클러치(44)는 건식 또는 습식이면서 단판 또는 다판의 마찰클러치로 채택된 것으로서, 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결되어 2단 출력기어(20)의 동력을 동력전달축(22)에 전달하거나 해제하는 역할을 하고, 제2원웨이 클러치(42)는 2단 출력기어(20)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 회생제동시 또는 역구동시 또는 파킹시 동력을 전달하거나 해제하는 역할을 한다.The friction clutch 44 in one configuration of the two-stage power connection means 40, which is a dry or wet and is adopted as a friction clutch of a single plate or a multi-plate, the other end of the power transmission shaft 22 and the two-stage output gear 20 It is connected between the sides of the) to transfer or release the power of the second stage output gear 20 to the power transmission shaft 22, the second one-way clutch 42 is the inner diameter of the second stage output gear (20) It is mounted on the power transmission shaft 22 passing through the center serves to transmit or release power during regenerative braking or reverse driving or parking.

이때, 상기 제1 및 제2원웨이 클러치(32,42)는 첨부한 도 에 도시된 바와 같이, 아우터 레이스(A: outer race)와, 인너 레이스(B, inner race)와, 롤러 타입(roller type) 또는 스프라그 타입(sprag type)으로 이루어진 원웨이 클러치부(C: OWC)를 포함하는 바, 본 발명에서는 1단 또는 2단 출력기어(18,20)가 아우터 레이스가 되고, 동력전달축(22)이 인너 레이스가 되며, 제1 및 제2원웨이 클러치(32,42)는 동력 전달 방향이 서로 다르게 배열된다.At this time, the first and second one-way clutches 32 and 42 are outer races (A), inner races (B) and rollers (roller) as shown in the accompanying drawings. type) or one-way clutch portion (OW: C) made of a sprag type (barrel type), in the present invention, one or two-stage output gear (18, 20) is an outer race, power transmission shaft 22 is an inner race, and the first and second one-way clutches 32 and 42 are arranged in different power transmission directions.

본 발명에서는 모터 동력을 전달받은 1단 출력기어(18)의 동력은 제1원웨이 클러치(32)의 원웨이 클러치부에 의하여 동력전달축으로 전달되고, 이와 동시에 1단 동력 전달시의 제2원웨이 클러치(42)는 헛도는 상태가 된다.In the present invention, the power of the first stage output gear 18 received the motor power is transmitted to the power transmission shaft by the one-way clutch portion of the first one-way clutch 32, and at the same time the second stage at the time of the first stage power transmission The one-way clutch 42 is in an idle state.

한편, 상기 마찰클러치(44)와 제2원웨이 클러치(42) 사이의 동력전달축(22)에는 회전 지지를 위한 제2베어링(46)이 장착되고, 동력전달축(22)의 타끝단에도 회전 지지를 위한 제1베어링이 장착된다.On the other hand, a second bearing 46 for rotational support is mounted on the power transmission shaft 22 between the friction clutch 44 and the second one-way clutch 42, and on the other end of the power transmission shaft 22. A first bearing for rotational support is mounted.

또한, 상기 동력전달축(22)의 타끝단을 지지하는 제1베어링(24)과 1단 동력전달수단(30) 사이에 장착되는 동력전달매개기어(26)가 장착되는 바, 이 동력전달매개기어(26)는 동력전달축(22)과 평행을 이루며 배열되는 출력축(50)의 출력기어(28)와 맞물리는 상태가 된다.In addition, a power transmission medium gear 26 mounted between the first bearing 24 and the first stage power transmission means 30 supporting the other end of the power transmission shaft 22 is provided. The gear 26 is engaged with the output gear 28 of the output shaft 50 arranged in parallel with the power transmission shaft 22.

여기서, 상기와 같이 구비된 본 발명의 전기자동차용 2단 변속기의 일 실시예에 대한 작동 흐름을 살펴보면 다음과 같다.Here, looking at the operation flow for an embodiment of a two-speed transmission for an electric vehicle of the present invention provided as described above are as follows.

동력전달흐름(1단)Power transmission flow (stage 1)

모터가 구동되어 입력축(12)에 동력이 입력되면, 입력축(12)에 장착된 1단 입력기어(14)와 2단 입력기어(16)가 동시에 회전을 하게 된다.When the motor is driven and the power is input to the input shaft 12, the first stage input gear 14 and the second stage input gear 16 mounted on the input shaft 12 rotates at the same time.

이어서, 상기 1단 입력기어(14)와 맞물린 1단 출력기어(18)가 회전을 하게 되고, 1단 출력기어(18)의 중심에 장착된 제1원웨이 클러치(32)의 아우터레이스가 1단 출력기어(18)와 함께 동일방향으로 회전을 하게 되며, 동시에 제1원웨이 클러치(32)의 원웨이 클러치부에서 인너 레이스가 되는 동력전달축(22)에 동력을 전달하는 작용을 하게 되어, 결국 1단 출력기어(18)의 동력이 동력전달축(22)으로 전달된다.Subsequently, the first stage output gear 18 engaged with the first stage input gear 14 rotates, and the outer race of the first one-way clutch 32 mounted at the center of the first stage output gear 18 is 1. However, it rotates in the same direction with the output gear 18, and at the same time, it acts to transmit power to the power transmission shaft 22 that becomes the inner race in the one-way clutch portion of the first one-way clutch 32. Therefore, the power of the first stage output gear 18 is transmitted to the power transmission shaft 22.

연이어, 상기 동력전달축(22)에 전달된 동력은 동력전달매개기어(26)를 통하여 출력기어(28)로 전달되는 동시에 출력기어(28)를 갖는 출력축(50)으로 전달되고, 최종 주행을 위한 주행휠이 출력축(50)으로부터 동력을 전달받아 회전함으로써, 차량의 1단 주행이 이루어지게 된다.Subsequently, the power transmitted to the power transmission shaft 22 is transmitted to the output gear 28 through the power transmission medium gear 26 and simultaneously to the output shaft 50 having the output gear 28, the final running By driving the driving wheel for receiving power from the output shaft 50, the first stage of the vehicle is made.

한편, 2단 동력 전달을 위한 마찰클러치(44)가 결합되지 않은 상태이므로, 2단 입력기어(16)를 통하여 2단 출력기어(20)에 동력이 전달되더라도, 2단 동력연결수단(40)의 제2원웨이 클러치(42)가 2단 출력기어(20)의 내경부에서 공회전하며 동력전달축(22)을 구속하지 않는 상태가 되어, 2단 동력이 동력전달축(22)에 전달되지 않는다.On the other hand, since the friction clutch 44 for the two-stage power transmission is not coupled, even if power is transmitted to the two-stage output gear 20 through the two-stage input gear 16, the two-stage power connection means 40 The second one-way clutch 42 is idle in the inner diameter of the second stage gear 20 and does not restrain the power transmission shaft 22, so that the second stage power is not transmitted to the power transmission shaft 22. Do not.

동력전달흐름(2단)Power Transmission Flow (Two Stages)

모터가 구동되어 입력축(12)에 동력이 입력되면, 입력축(12)에 장착된 1단 입력기어(14)와 2단 입력기어(16)가 동시에 회전을 하게 된다.When the motor is driven and the power is input to the input shaft 12, the first stage input gear 14 and the second stage input gear 16 mounted on the input shaft 12 rotates at the same time.

이때, 2단 동력 전달을 위한 마찰클러치(44)가 결합되는 상태 즉, 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결된 마찰클러치(44)가 결합되는 상태가 되어, 2단 출력기어(20)의 동력이 동력전달축(22)에 전달되는 상태가 된다.At this time, the state in which the friction clutch 44 for two-stage power transmission is coupled, that is, the state in which the friction clutch 44 connected between the other end of the power transmission shaft 22 and the side of the two-stage output gear 20 is coupled. Thus, the power of the second stage output gear 20 is transmitted to the power transmission shaft 22.

연이어, 상기 동력전달축(22)에 전달된 동력은 동력전달매개기어(26)를 통하여 출력기어(28)로 전달되는 동시에 출력기어(28)를 갖는 출력축(50)으로 전달되고, 최종 주행을 위한 주행휠이 출력축(50)으로부터 동력을 전달받아 회전함으로써, 차량의 2단 주행이 이루어지게 된다.Subsequently, the power transmitted to the power transmission shaft 22 is transmitted to the output gear 28 through the power transmission medium gear 26 and simultaneously to the output shaft 50 having the output gear 28, the final running By driving the driving wheel for receiving power from the output shaft 50, the second stage of the vehicle is made.

한편, 하기의 표 1에 나타낸 바와 같이, 구동 회생 제동시 출력축(50)으로부터의 역토크가 2단 출력기어(20)내에 장착된 제2원웨이 클러치(42)를 통하여 입력축(11)으로 전달되어, 모터(10)의 발전이 이루어질 수 있다.Meanwhile, as shown in Table 1 below, the reverse torque from the output shaft 50 is transmitted to the input shaft 11 through the second one-way clutch 42 mounted in the two-stage output gear 20 during driving regenerative braking. Thus, the power generation of the motor 10 can be made.

또한, 모터의 역구동에 의한 동력이 제2원웨이 클러치(42)를 통하여 동력전달축(22) 및 출력축(50)으로 전달되어 후진 주행이 이루어질 수 있으며, 이때 마찰클러치(44)를 결합시킴에 따라 모터의 역구동시 회생 제동 발전이 이루어질 수 있다.In addition, the power by the reverse drive of the motor is transmitted to the power transmission shaft 22 and the output shaft 50 through the second one-way clutch 42 may be a reverse driving, wherein the friction clutch 44 is coupled As a result, the regenerative braking power generation may occur at the reverse driving of the motor.

Figure 112011058258015-pat00001
Figure 112011058258015-pat00001

여기서, 본 발명의 전기자동차용 2단 변속기의 다른 실시예로서, 1개의 마찰클러치와 1개의 양방향 클러치를 조합한 구성을 살펴보면 다음과 같다.Here, as another embodiment of the two-speed transmission for an electric vehicle of the present invention, a configuration in which one friction clutch and one bidirectional clutch are combined is as follows.

주행용 모터와 차량의 주행휠 사이에는 모터의 동력을 감속하여 주행휠쪽으로 출력하는 감속기 즉, 본 발명의 2단 변속기가 설치되며, 이 2단 변속기의 구성중 입력축(12)이 전기자동차 주행용 모터(10)의 축에 일체로 연결되고, 이 입력축(12)에 1단 입력기어(14)와 1단 입력기어(14)에 비하여 큰 기어로 채택된 2단 입력기어(16)가 나란히 장착된다.Between the driving motor and the traveling wheel of the vehicle, a speed reducer for reducing the power of the motor and outputting it toward the traveling wheel, that is, a two-speed transmission of the present invention is installed, and the input shaft 12 of the configuration of the two-speed transmission is used for driving an electric vehicle. Two-stage input gear 16, which is integrally connected to the shaft of the motor 10 and adopted as a larger gear than the first-stage input gear 14 and the first-stage input gear 14, is mounted side by side on the input shaft 12. do.

또한, 상기 변속기 케이스내에는 입력축(12)과 평행하게 동력전달축(22)이 배열되는 바, 이 동력전달축(22)에는 1단 입력기어(14)와 맞물리는 1단 출력기어(18)와, 2단 입력기어(16)와 맞물리는 2단 출력기어(20)가 나란히 장착된다.In addition, a power transmission shaft 22 is arranged in parallel with the input shaft 12 in the transmission case, and the power transmission shaft 22 has a first stage output gear 18 engaged with the first stage input gear 14. And a two-stage output gear 20 meshing with the two-stage input gear 16.

이때, 상기 동력전달축(22)은 1단 출력기어(18) 및 2단 출력기어(20)의 중심에 회전 가능하게 삽입되어, 변속기 케이스내에서 입력축(12)과 평행하게 배열되는 상태가 된다.At this time, the power transmission shaft 22 is rotatably inserted in the center of the first stage output gear 18 and the second stage output gear 20, and is arranged in parallel with the input shaft 12 in the transmission case. .

특히, 상기 1단 출력기어(18)의 중심에는 1단 출력기어(18)의 동력을 동력전달축(22)에 전달 또는 해제하는 1단 동력연결수단(30)으로서 양방향 클러치(34)가 장착되고, 이 양방향 클러치(34)는 1단 출력기어(18)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 동력을 전달하거나 해제하는 역할을 하게 된다.In particular, a bidirectional clutch 34 is mounted at the center of the first stage output gear 18 as the first stage power connecting means 30 for transmitting or releasing the power of the first stage output gear 18 to the power transmission shaft 22. The bidirectional clutch 34 is mounted on the inner diameter portion of the first stage output gear 18 to transmit or release power to the power transmission shaft 22 passing through the center.

또한, 상기 2단 출력기어(20)의 측부 및 중심에는 2단 출력기어(20)의 동력을 동력전달축(22)에 전달 또는 해제하는 2단 동력연결수단(40)이 장착되는데, 이 2단 동력연결수단(40)은 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결되는 마찰클러치(44)와, 2단 출력기어(20)의 내경부에 장착되어 중심을 지나는 동력전달축(22)을 회전지지하는 베어링(48)으로 구성된다.In addition, two-sided power connecting means 40 for transmitting or releasing the power of the two-stage output gear 20 to the power transmission shaft 22 is mounted at the side and the center of the two-stage output gear 20. However, the power connecting means 40 is attached to the friction clutch 44 connected between the other end of the power transmission shaft 22 and the side of the second output gear 20 and the inner diameter of the second output gear 20. It consists of a bearing 48 for rotationally supporting the power transmission shaft 22 passing through the center.

마찬가지로, 상기 2단 동력연결수단(40)의 마찰클러치(44)는 건식 또는 습식이면서 단판 또는 다판의 마찰클러치로 채택된다.Similarly, the friction clutch 44 of the two-stage power connection means 40 is adopted as a friction clutch of a single plate or a multi plate while being dry or wet.

이때, 상기 양방향 클러치(34)에는 동력 연결을 위한 회전 방향을 선택하기 위하여, 양방향 클러치(34)의 변경레버(35)를 시계 또는 시계반대방향으로 조작하는 스위치 제어기(33)가 연결된다.At this time, the bidirectional clutch 34 is connected to a switch controller 33 for manipulating the change lever 35 of the bidirectional clutch 34 in a clockwise or counterclockwise direction to select a rotational direction for power connection.

첨부한 도 4a 내지 도 4c에 도시된 바와 같이, 본 발명의 다른 실시예에서 1단 동력연결수단으로 채택된 양방향 클러치(34)는 아우터 케이스(38)가 1단 출력기어(18)가 되고, 인너 케이스(37)가 동력전달축(22)이 된다.As shown in FIGS. 4A to 4C, the bidirectional clutch 34 adopted as the first stage power connecting means in another embodiment of the present invention has the outer case 38 as the first stage output gear 18, The inner case 37 becomes the power transmission shaft 22.

또한, 상기 양방향 클러치(34)의 아우터 케이스(38) 및 인너 케이스(37) 사아에는 원주방향을 따라 제1케이지(51)와 제2케이지(52)가 배열되는 동시에 제1 및 제2케이지(51,52) 사이에는 롤러(39)와 리턴스프링(54)이 교번으로 배열되고, 롤러(39)와 마주보는 제1 및 제2케이지(51,52)의 측부에는 프리로드(preload spring)이 배열된다.In addition, in the outer case 38 and the inner case 37 of the bidirectional clutch 34, the first cage 51 and the second cage 52 are arranged along the circumferential direction and the first and second cages ( The rollers 39 and the return springs 54 are alternately arranged between the 51 and 52, and preload springs are provided on the sides of the first and second cages 51 and 52 facing the rollers 39. Are arranged.

특히, 아우터 케이스(38)의 한쪽에는 변경레버(35)가 각회전 가능하게 배열되고, 변경레버(35)의 내주단부에는 롤러(39)의 구름 및 구속방향을 변경할 수 있는 가압판(36)이 장착된다.In particular, one side of the outer case 38, the change lever 35 is arranged to be angular rotation, and at the inner circumferential end of the change lever 35 is pressed plate 36 which can change the rolling and the restraint direction of the roller 39 Is mounted.

즉, 첨부한 도 4a의 중립 상태에서 변경레버(35)가 시계방향으로 조작되면, 도 4b에서 보듯이 변경레버(35)의 가압판(36)이 우측쪽 롤러(39)를 가압하는 동시에 우측쪽 롤러(39)가 아우터 케이스(38)와 인너 케이스(37) 사이에 끼이게 되어, 아우터 케이스(38)인 1단 출력기어(18)의 시계방향 회전 동력이 인너 케이스(37)인 동력전달축(22)으로 전달될 수 있다.That is, when the change lever 35 is operated clockwise in the attached neutral state of FIG. 4A, as shown in FIG. 4B, the pressure plate 36 of the change lever 35 presses the right roller 39 and the right side. The roller 39 is sandwiched between the outer case 38 and the inner case 37, so that the clockwise rotational power of the first stage output gear 18, which is the outer case 38, is the inner case 37, the power transmission shaft. May be passed to (22).

반대로, 첨부한 도 4a의 중립 상태에서 변경레버(35)가 시계반대방향으로 조작되면, 도 4c에서 보듯이 변경레버(35)의 가압판(36)이 좌측쪽 롤러(39)를 가압하는 동시에 좌측쪽 롤러(39)가 아우터 케이스(38)와 인너 케이스(37) 사이에 끼이게 되어, 아우터 케이스(38)인 1단 출력기어(18)의 시계반대방향 회전 동력이 인너 케이스(37)인 동력전달축(22)으로 전달될 수 있다.On the contrary, when the change lever 35 is operated in the counterclockwise direction in the neutral state of FIG. 4A, the pressure plate 36 of the change lever 35 presses the left roller 39 at the same time as shown in FIG. 4C. The side roller 39 is sandwiched between the outer case 38 and the inner case 37 so that the counterclockwise rotational power of the first stage output gear 18, which is the outer case 38, is the inner case 37. It may be delivered to the delivery shaft 22.

여기서, 상기와 같이 구비된 본 발명의 전기자동차용 2단 변속기의 다른 실시예에 대한 작동 흐름을 살펴보면 다음과 같다.Here, looking at the operation flow for another embodiment of the two-speed transmission for an electric vehicle of the present invention provided as described above are as follows.

동력전달흐름(1단)Power transmission flow (stage 1)

모터가 구동되어 입력축(12)에 동력이 입력되면, 입력축(12)에 장착된 1단 입력기어(14)와 2단 입력기어(16)가 동시에 회전을 하게 된다.When the motor is driven and the power is input to the input shaft 12, the first stage input gear 14 and the second stage input gear 16 mounted on the input shaft 12 rotates at the same time.

이어서, 상기 1단 입력기어(14)와 맞물린 1단 출력기어(18)가 회전을 하게 되고, 1단 출력기어(18)의 중심에 장착된 양방향 클러치(34)에서 1단 출력기어(18)의 회전동력을 동력전달축(22)으로 전달하게 된다.Subsequently, the first stage output gear 18 meshed with the first stage input gear 14 rotates, and the first stage output gear 18 is formed in the bidirectional clutch 34 mounted at the center of the first stage output gear 18. The rotational power of the will be transmitted to the power transmission shaft (22).

즉, 첨부한 도 4a의 중립 상태에서 스위치 제어기(33)의 제어에 의하여 변경레버(35)가 시계방향으로 조작되면, 도 4b에서 보듯이 변경레버(35)의 가압판(36)이 우측쪽 롤러(39)를 가압하여 우측쪽 롤러(39)가 아우터 케이스(38)와 인너 케이스(37) 사이에 끼이게 되어, 아우터 케이스(38)인 1단 출력기어(18)의 시계방향 회전 동력이 인너 케이스(37)인 동력전달축(22)으로 전달된다.That is, when the change lever 35 is operated in the clockwise direction under the control of the switch controller 33 in the neutral state of FIG. 4A, the pressing plate 36 of the change lever 35 is moved to the right side roller as shown in FIG. 4B. The right side roller 39 is pinched between the outer case 38 and the inner case 37 by pressing the 39 so that the clockwise rotational power of the first stage output gear 18 of the outer case 38 is inner. It is transmitted to the power transmission shaft 22 which is the case 37.

연이어, 상기 동력전달축(22)에 전달된 동력은 동력전달매개기어(26)를 통하여 출력기어(28)로 전달되는 동시에 출력기어(28)를 갖는 출력축(50)으로 전달되고, 최종 주행을 위한 주행휠이 출력축(50)으로부터 동력을 전달받아 회전함으로써, 차량의 1단 주행이 이루어지게 된다.Subsequently, the power transmitted to the power transmission shaft 22 is transmitted to the output gear 28 through the power transmission medium gear 26 and simultaneously to the output shaft 50 having the output gear 28, the final running By driving the driving wheel for receiving power from the output shaft 50, the first stage of the vehicle is made.

마찬가지로, 2단 동력 전달을 위한 마찰클러치(44)가 결합되지 않은 상태이므로, 2단 입력기어(16)를 통하여 2단 출력기어(20)에 동력이 전달되더라도, 2단 출력기어(20)가 그 내경부의 베어링(48)에 의하여 공회전하는 상태가 되므로, 2단 동력이 동력전달축(22)에 전달되지 않는다.Similarly, since the friction clutch 44 for the two-stage power transmission is not coupled, even when the power is transmitted to the two-stage output gear 20 through the two-stage input gear 16, the two-stage output gear 20 is Since it is in a state of idling by the bearing 48 of the inner diameter portion, two-stage power is not transmitted to the power transmission shaft 22.

동력전달흐름(2단)Power Transmission Flow (Two Stages)

모터가 구동되어 입력축(12)에 동력이 입력되면, 입력축(12)에 장착된 1단 입력기어(14)와 2단 입력기어(16)가 동시에 회전을 하게 된다.When the motor is driven and the power is input to the input shaft 12, the first stage input gear 14 and the second stage input gear 16 mounted on the input shaft 12 rotates at the same time.

이때, 2단 동력 전달을 위한 마찰클러치(44)가 결합되는 상태 즉, 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결된 마찰클러치(44)가 결합되는 상태가 되어, 2단 출력기어(20)의 동력이 동력전달축(22)에 전달되는 상태가 된다.At this time, the state in which the friction clutch 44 for two-stage power transmission is coupled, that is, the state in which the friction clutch 44 connected between the other end of the power transmission shaft 22 and the side of the two-stage output gear 20 is coupled. Thus, the power of the second stage output gear 20 is transmitted to the power transmission shaft 22.

이와 동시에, 첨부한 도 4a의 중립 상태에서 스위치 제어기(33)의 제어에 의하여 양방향 클러치(34)의 변경레버(35)가 시계반대방향으로 조작되어, 도 4c에서 보듯이 변경레버(35)의 가압판(36)이 좌측쪽 롤러(39)를 가압하는 동시에 좌측쪽 롤러(39)가 아우터 케이스(38)와 인너 케이스(37) 사이에 끼이게 되어, 아우터 케이스(38)인 1단 출력기어(18)의 시계반대방향 회전 동력이 인너 케이스(37)인 동력전달축(22)으로 전달 가능한 상태이지만, 상기와 같이 동력전달축(22)은 2단 출력기어(20)로부터 동력을 전달받아 시계방향으로 회전을 하는 상태이므로, 동력전달축(22)은 양방향 클러치(34)에 의하여 구속받지 않는 상태가 된다.At the same time, the change lever 35 of the two-way clutch 34 is operated in the counterclockwise direction by the control of the switch controller 33 in the neutral state of FIG. 4A, and as shown in FIG. 4C, the change lever 35 While the pressure plate 36 presses the left roller 39, the left roller 39 is sandwiched between the outer case 38 and the inner case 37, so that the first stage output gear which is the outer case 38 ( While the counterclockwise rotational power of 18) can be transmitted to the power transmission shaft 22 which is the inner case 37, the power transmission shaft 22 receives power from the second stage output gear 20 as described above. Since the state rotates in the direction, the power transmission shaft 22 is not restrained by the bidirectional clutch 34.

따라서, 상기 동력전달축(22)에 전달된 동력은 동력전달매개기어(26)를 통하여 출력기어(28)로 전달되는 동시에 출력기어(28)를 갖는 출력축(50)으로 전달되고, 최종 주행을 위한 주행휠이 출력축(50)으로부터 동력을 전달받아 회전함으로써, 차량의 2단 주행이 이루어지게 된다.Therefore, the power transmitted to the power transmission shaft 22 is transmitted to the output gear 28 through the power transmission medium gear 26 and to the output shaft 50 having the output gear 28, and the final running By driving the driving wheel for receiving power from the output shaft 50, the second stage of the vehicle is made.

한편, 하기의 표 2에 나타낸 바와 같이, 구동(전진) 회생 제동시 출력축(50)으로부터의 역토크 또는 역구동(후진) 회생 제동시 출력축(50)으로부터의 역토크가 양방향 클러치(34)를 통하여 상기와 같은 1단 및 2단 시 동력전달방향의 반대방향으로 작용하여 회생제동에 따른 모터(10)의 발전이 이루어질 수 있ㄷ다.On the other hand, as shown in Table 2 below, the reverse torque from the output shaft 50 at the time of driving (forward) regenerative braking or the reverse torque from the output shaft 50 during the reverse driving (reverse) regenerative braking is applied to the bidirectional clutch 34. Through the first and second stages as described above, the motor 10 may be generated by regenerative braking by acting in the opposite direction of the power transmission direction.

또한, 모터(10)의 역구동에 의한 동력이 상기한 1단시 동력전달방향과 반대인 방향으로 양방향 클러치(34)를 통하여 전달되거나, 상기한 2단시 동력전달방향과 반대인 방향으로 양방향 클러치(34)를 통하여 전달되어 후진 주행이 이루어질 수 있다.In addition, the power by the reverse drive of the motor 10 is transmitted through the bidirectional clutch 34 in the direction opposite to the above-described one-stage power transmission direction, or the bidirectional clutch (in the direction opposite to the two-stage power transmission direction described above). The vehicle may be transmitted through 34 to perform reverse driving.

Figure 112011058258015-pat00002
Figure 112011058258015-pat00002

10 : 주행용 모터 12 : 입력축
14 : 1단 입력기어 16 : 2단 입력기어
18 : 1단 출력기어 20 : 2단 출력기어
22 : 동력전달축 24 : 제1베어링
26 : 동력전달매개기어 28 : 출력기어
30 : 1단 동력연결수단 32 : 제1원웨이 클러치
33 : 스위치 제어기 34 : 양방향 클러치
35 : 변경레버 36 : 가압판
37 : 인너 케이스 38 : 아우터 케이스
39 : 롤러 40 : 2단 동력연결수단
42 : 제2원웨이 클러치 44 : 마찰클러치
46 : 제2베어링 48 : 베어링
50 : 출력축 51 : 제1케이지
52 : 제2케이지 53 : 프리로드 스프링
54 : 리턴스프링10: driving motor 12: input shaft
14: 1 stage input gear 16: 2 stage input gear
18: 1st stage output gear 20: 2nd stage output gear
22: power transmission shaft 24: the first bearing
26: power transmission medium gear 28: output gear
30: first stage power connecting means 32: first one-way clutch
33: switch controller 34: bidirectional clutch
35: change lever 36: pressure plate
37: inner case 38: outer case
39: roller 40: two-stage power connection means
42: second one-way clutch 44: friction clutch
46: second bearing 48: bearing
50: output shaft 51: first cage
52: second cage 53: preload spring
54: return spring

Claims (5)

삭제delete 전기자동차 주행용 모터(10)의 축과 연결된 입력축(12)과;
상기 입력축(12)에 나란히 장착되는 1단 입력기어(14) 및 2단 입력기어(16)와;
1단 입력기어(14)와 맞물리는 1단 출력기어(18)와;
2단 입력기어(16)와 맞물리는 2단 출력기어(20)와;
상기 1단 출력기어(18) 및 2단 출력기어(20)의 중심에 회전 가능하게 삽입되어 입력축(12)과 평행하게 배열되는 동력전달축(22)과;
상기 1단 출력기어(18)의 중심에 장착되어, 1단 출력기어(18)의 동력을 동력전달축(22)에 전달 또는 해제하는 1단 동력연결수단(30)과;
상기 2단 출력기어(20)의 측부 및 중심에 장착되어, 2단 출력기어(20)의 동력을 동력전달축(22)에 전달 또는 해제하는 2단 동력연결수단(40)과;
상기 동력전달축(22)의 타끝단을 지지하는 제1베어링(24)과 1단 동력전달수단(30) 사이에 장착되는 동력전달매개기어(26)와;
상기 동력전달매개기어(26)와 맞물리는 출력기어(28)를 갖는 출력축(50);
을 포함하고,
상기 1단 동력연결수단(30)은, 1단 출력기어(18)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 동력을 전달하거나 해제하는 제1원웨이 클러치(32)로 채택되고,
상기 2단 동력연결수단(40)은, 2단 출력기어(20)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 동력을 전달하거나 해제하는 제2원웨이 클러치(42)와, 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결되는 마찰클러치(44)로 구성된 것을 특징으로 하는 전기자동차용 2단 변속기.
An input shaft 12 connected to the shaft of the electric vehicle driving motor 10;
A first stage input gear 14 and a second stage input gear 16 mounted side by side on the input shaft 12;
A first stage output gear 18 engaged with the first stage input gear 14;
A two-stage output gear 20 engaged with the two-stage input gear 16;
A power transmission shaft 22 rotatably inserted in the centers of the first stage output gear 18 and the second stage output gear 20 and arranged in parallel with the input shaft 12;
A first stage power connecting means (30) mounted at the center of the first stage output gear (18) to transfer or release the power of the first stage output gear (18) to the power transmission shaft (22);
Two-stage power connecting means (40) mounted on the side and the center of the two-stage output gear (20) to transfer or release the power of the two-stage output gear (20) to the power transmission shaft (22);
A power transmission medium gear (26) mounted between the first bearing (24) and the first power transmission means (30) for supporting the other end of the power transmission shaft (22);
An output shaft 50 having an output gear 28 that meshes with the power transmission medium gear 26;
/ RTI >
The first stage power connecting means 30 is adopted as the first one-way clutch 32 mounted on the inner diameter of the first stage output gear 18 to transmit or release power to the power transmission shaft 22 passing through the center. Become,
The two-stage power connection means 40, the second one-way clutch 42 is mounted to the inner diameter portion of the two-stage output gear 20 for transmitting or releasing power to the power transmission shaft 22 passing through the center; Two-speed transmission for an electric vehicle, characterized in that consisting of a friction clutch 44 connected between the other end of the power transmission shaft 22 and the side of the two-stage output gear (20).
청구항 2에 있어서,
상기 마찰클러치(44)와 제2원웨이 클러치(42) 사이의 동력전달축(22)에 회전 지지를 위한 제2베어링(46)이 장착된 것을 특징으로 하는 전기자동차용 2단 변속기.
The method according to claim 2,
The two-speed transmission for an electric vehicle, characterized in that the second bearing 46 for rotational support is mounted on the power transmission shaft (22) between the friction clutch (44) and the second one-way clutch (42).
청구항 2에 있어서,
상기 1단 동력연결수단(30)은, 1단 출력기어(18)의 내경부에 장착되어 중심을 지나는 동력전달축(22)에 동력을 전달하거나 해제하는 양방향 클러치(34)로 채택되고,
상기 2단 동력연결수단(40)은, 동력전달축(22)의 타끝단과 2단 출력기어(20)의 측부 간에 연결되는 마찰클러치(44)와, 2단 출력기어(20)의 내경부에 장착되어 중심을 지나는 동력전달축(22)을 회전지지하는 베어링(48)으로 구성된 것을 특징으로 하는 전기자동차용 2단 변속기.
The method according to claim 2,
The first stage power connecting means 30 is adopted as a two-way clutch 34 mounted on the inner diameter of the first stage output gear 18 to transmit or release power to the power transmission shaft 22 passing through the center.
The two-stage power connection means 40, the friction clutch 44 is connected between the other end of the power transmission shaft 22 and the side of the two-stage output gear 20, and the inner diameter of the two-stage output gear 20. The two-speed transmission for an electric vehicle, characterized in that consisting of a bearing 48 for rotationally supporting the power transmission shaft 22 passing through the center.
청구항 4에 있어서,
상기 양방향 클러치(34)에는 동력 연결을 위한 회전 방향을 선택하기 위하여, 양방향 클러치(34)의 변경레버(35)를 시계 또는 시계반대방향으로 조작하는 스위치 제어기(33)가 연결되는 것을 특징으로 하는 전기자동차용 2단 변속기.The method of claim 4,
The bidirectional clutch 34 is connected to a switch controller 33 for operating the change lever 35 of the bidirectional clutch 34 clockwise or counterclockwise to select a rotational direction for power connection. Two-speed transmission for electric vehicles.
KR1020110074839A 2011-07-28 2011-07-28 Power tain for electric vehicle KR101282691B1 (en)

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