KR20080038918A - Continuously variable transmission for vehicle - Google Patents

Continuously variable transmission for vehicle Download PDF

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Publication number
KR20080038918A
KR20080038918A KR1020060106454A KR20060106454A KR20080038918A KR 20080038918 A KR20080038918 A KR 20080038918A KR 1020060106454 A KR1020060106454 A KR 1020060106454A KR 20060106454 A KR20060106454 A KR 20060106454A KR 20080038918 A KR20080038918 A KR 20080038918A
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South Korea
Prior art keywords
piston
pulley
flow path
bearing member
continuously variable
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KR1020060106454A
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Korean (ko)
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KR100837937B1 (en
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신진호
신성호
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현대자동차주식회사
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Priority to KR20060106454A priority Critical patent/KR100837937B1/en
Publication of KR20080038918A publication Critical patent/KR20080038918A/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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
    • F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
    • F16H63/065—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions hydraulic actuating means
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • 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
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • 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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

A continuously variable transmission for a vehicle is provided to prevent an excessive amount of oil from being leaked in the transmission by supplying a pressurized fluid to a hydraulic chamber through oil passages formed in a bearing member and a piston. A variable side pulley(30) is movably installed on a primary pulley(10) which is mounted on an input shaft of a transmission, and a secondary pulley mounted on an output shaft. A piston(40) is mounted on the input shaft and the output shaft. A hydraulic chamber(50) is formed between one side of the piston and the variable side pulley to receive a pressurized fluid. A bearing member(70) is inserted into a rear cover(60) to support the piston and rotate the variable side pulley. Oil passages(80,85) are formed in the bearing member and the piston to supply the pressured fluid to the hydraulic chamber.

Description

차량용 무단변속기{CONTINUOUSLY VARIABLE TRANSMISSION FOR VEHICLE}Continuously variable transmission for vehicles {CONTINUOUSLY VARIABLE TRANSMISSION FOR VEHICLE}

도 1은 종래 기술에 따른 차량용 무단변속기의 프라이머리 풀리 측을 개략적으로 나타낸 도,1 is a view schematically showing a primary pulley side of a continuously variable transmission for a vehicle according to the prior art;

도 2는 본 발명의 일 실시예에 따른 차량용 무단변속기의 프라이머리 풀리 측을 개략적으로 나타낸 도이다.2 is a view schematically showing a primary pulley side of a continuously variable transmission for a vehicle according to an embodiment of the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

10 : 프라이머리 풀리 20 : 고정축 풀리10: primary pulley 20: fixed shaft pulley

30 : 가변축 풀리 40 : 피스톤30: variable shaft pulley 40: piston

50 : 유압챔버 60 : 리어커버50: hydraulic chamber 60: rear cover

70 : 베어링 부재 80,85 : 유로70: bearing member 80,85: flow path

본 발명은 차량용 무단변속기에 관한 것으로서, 보다 상세하게는 차량의 초 기 발진 응답성과 무단 변속기내의 오일 누수량의 과다 문제를 해결하고 프라이머리 풀리와 세컨더리 풀리의 내구성을 유지하기 위하여 베어링부재와 피스톤에 유로를 설치한 차량용 무단변속기에 관한 것이다.The present invention relates to a continuously variable transmission for a vehicle, and more particularly, in order to solve the problem of initial oscillation responsiveness of the vehicle and an excessive amount of oil leakage in the continuously variable transmission and to maintain durability of the primary pulley and the secondary pulley. It relates to a continuously variable transmission for a vehicle installed.

일반적으로 차량의 변속장치는 엔진의 구동력을 구동륜에 전달하는 기능을 갖고 있는데, 이러한 변속장치에는 운전자의 의지대로 운전자가 직접 변속단을 선택하는 수동 변속기와, 차량의 주행 조건에 따라 자동적으로 변속이 이루어지는 자동 변속기와, 각 변속단 사이에 특정한 변속 영역이 없이 무단으로 연속적인 변속이 이루어지는 무단 변속기로 대별된다. 이러한 무단 변속기는 입력축과 출력축에 장착되는 풀리의 직경변위를 이용하는 방식이 주로 이용된다.In general, the transmission of the vehicle has a function of transmitting the driving force of the engine to the drive wheels. Such a transmission includes a manual transmission in which the driver directly selects a shift stage at the driver's will, and the shift is automatically performed according to the driving conditions of the vehicle. It is divided into the automatic transmission which is made, and the continuously variable transmission in which continuous transmission is continuously performed without a specific speed change area between each transmission stage. Such continuously variable transmissions are mainly used by using the diameter displacement of the pulley mounted on the input shaft and the output shaft.

도 1은 종래 기술에 따른 차량용 무단변속기의 프라이머리 풀리 측을 개략적으로 나타낸 도이다.1 is a view schematically showing a primary pulley side of a continuously variable transmission for a vehicle according to the prior art.

도 1에서 도시한 바와 같이, 종래 기술에 따른 차량용 무단변속기의 입력축에 장착되는 프라이머리 풀리(1)에는 고정측 풀리(2)와 가변측 풀리(3)로 이루어지며, 상기 고정측 풀리(2)는 상기 입력축에 일체로 형성되어 있으며, 상기 가변측 풀리(3)는 입력축에 좌/우로 이동될 수 있도록 결합된다.As shown in Figure 1, the primary pulley (1) mounted on the input shaft of the continuously variable transmission for a vehicle according to the prior art consists of a fixed side pulley (2) and a variable side pulley (3), the fixed side pulley (2) ) Is integrally formed on the input shaft, and the variable pulley 3 is coupled to the input shaft so as to be moved left / right.

상기 가변측 풀리(3)의 외측에는 피스톤(4)이 설치되고, 상기 피스톤(4)의 일측과 상기 가변측 풀리(3)의 사이에는 압력유체를 공급받도록 유압챔버(5)가 형성된다.A piston 4 is installed outside the variable side pulley 3, and a hydraulic chamber 5 is formed between one side of the piston 4 and the variable side pulley 3 to receive a pressure fluid.

그리고, 상기 피스톤(4)의 타측에는 상기 피스톤(4)을 지지하기 위하여 무단 변속기의 리어커버(6)에 베어링(7)이 압입되어 설치된다.In addition, a bearing 7 is press-fitted to the rear cover 6 of the continuously variable transmission to support the piston 4 on the other side of the piston 4.

상기 유압챔버(5)는 상기 가변측 풀리(3) 내부에 형성된 유로(8a)를 통하여 압력유체가 공급된다.The hydraulic chamber 5 is supplied with a pressure fluid through a flow path 8a formed in the variable side pulley 3.

이때, 상기 유압챔버(5)에 공급되는 압력유체는 상기 리어커버(6) 측에 형성된 유로(8b)와 상기 가변축 풀리(3)의 내부에 형성된 유로(8a)와 상기 가변측 풀리(3)의 일측에 형성된 오일포트(8c)를 통하여 상기 유압챔버(5)에 전달된다.At this time, the pressure fluid supplied to the hydraulic chamber 5 includes a flow path 8b formed on the rear cover 6 side, a flow path 8a formed inside the variable shaft pulley 3 and the variable side pulley 3. It is transmitted to the hydraulic chamber 5 through the oil port (8c) formed on one side of.

이에 따라, 상기 유압챔버(5)내에서 발생된 압력은 상기 가변측 풀리(3)에 전달되어 상기 가변측 풀리(3)를 작동시키게 된다.Accordingly, the pressure generated in the hydraulic chamber 5 is transmitted to the variable side pulley 3 to operate the variable side pulley 3.

그리고, 상기 리어커버(6)측에 형성된 유로(8b)와 상기 가변측 풀리(3)의 내부에 형성된 유로(8a)는 상기 리어커버(6)측 유로(8b)에 압입되어 설치되고 상기 가변측 풀리(3)측 유로(8a)에 끼워지는 부위에 실링(9)이 체결된 유로관(8d)에 의하여 연통된다.In addition, the flow path 8b formed on the rear cover 6 side and the flow path 8a formed inside the variable side pulley 3 are press-fitted to the rear cover 6 side flow path 8b to be installed. It is communicated by the flow path tube 8d by which the sealing 9 was fastened to the site | part fitted in the side pulley 3 side flow path 8a.

그러나, 상기한 바와 같은 종래 기술에 따른 차량용 무단변속기는 상기 가변측 풀리(3)에 끼워지는 유로관(8d)에 체결된 실링(9)의 사양과 상기 실링(9)의 온도에 따른 변형으로 오일 누수량이 증대되어 차량의 발진 응답성이 저하되는 문제점이 있다.However, the continuously variable transmission for a vehicle according to the prior art as described above is modified according to the specifications of the seal 9 fastened to the flow path tube 8d fitted to the variable side pulley 3 and the temperature of the seal 9. There is a problem that the oil leakage amount is increased to reduce the oscillation response of the vehicle.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 엔진의 구동력에 의하여 생성되는 압력유체를 베어링부재와 피스톤에 형성된 유로 를 통하여 유압챔버에 공급함으로써, 차량의 초기 발진 응답성과 무단 변속기내의 오일 누수량의 과다 문제를 해결하고 프라이머리 풀리와 세컨더리 풀리의 내구성을 향상시키는 차량용 무단변속기를 제공하는데 그 목적이 있다.The present invention has been made to solve the above-mentioned problems of the prior art, by supplying a pressure fluid generated by the driving force of the engine to the hydraulic chamber through the flow path formed in the bearing member and the piston, the initial starting response of the vehicle and the continuously variable transmission An object of the present invention is to provide a continuously variable transmission for a vehicle that solves an excessive problem of oil leakage and improves durability of a primary pulley and a secondary pulley.

본 발명은 무단변속기의 입력축에 장착되는 프라이머리 풀리와 출력축에 장착되는 세컨더리 풀리에 좌/우로 이동가능하게 각각 설치된 가변측 풀리와, 상기 입력축과 출력축에 각각 장착되고, 상기 가변측 풀리의 외측에 설치된 피스톤과, 상기 피스톤의 일측과 상기 가변측 풀리의 사이에 압력유체를 공급받도록 형성된 유압챔버와, 상기 피스톤의 타측에는 상기 피스톤을 지지하고, 상기 가변측 풀리를 회전시키기 위하여 리어커버에 압입되어 설치된 베어링부재와, 엔진의 구동력에 의하여 생성되는 압력유체를 상기 유압챔버에 공급하도록 상기 베어링부재와 상기 피스톤에 형성된 유로를 포함하는 차량용 무단변속기를 제공한다.The present invention is a variable pulley mounted to the primary pulley mounted to the input shaft of the continuously variable transmission and the secondary pulley mounted to the output shaft so as to be movable left and right, respectively mounted to the input shaft and the output shaft, respectively on the outside of the variable side pulley A piston installed, a hydraulic chamber configured to receive a pressure fluid between one side of the piston and the variable side pulley, and the other side of the piston to support the piston and to be pressed into a rear cover to rotate the variable side pulley. Provided is a continuously variable transmission for a vehicle including an installed bearing member and a flow path formed in the bearing member and the piston to supply pressure fluid generated by a driving force of an engine to the hydraulic chamber.

이하, 본 발명의 실시 예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

또한, 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고 단지 예시로 제시된 것이며, 그 기술적 요지를 이탈하지 않는 범위내에서 다양한 변경이 가능하다.In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only, and various modifications may be made without departing from the technical gist of the present invention.

도 2는 본 발명의 일 실시예에 따른 차량용 무단변속기의 프라이머리 풀리 측을 개략적으로 나타낸 도이다.2 is a view schematically showing a primary pulley side of a continuously variable transmission for a vehicle according to an embodiment of the present invention.

도 2에서 도시한 바와 같이, 본 발명에 따른 차량용 무단변속기는 무단변속기의 입력축에 장착되는 프라이머리 풀리(10)와 출력축에 장착되는 세컨더리 풀리(미도시)에 좌/우로 이동가능하게 각각 가변측 풀리(30)가 설치된다.As shown in FIG. 2, the continuously variable transmission for a vehicle according to the present invention is variably shifted left and right to a primary pulley 10 mounted on an input shaft of a continuously variable transmission and a secondary pulley (not shown) mounted on an output shaft. The pulley 30 is installed.

피스톤(40)은 상기 입력축과 출력축에 각각 장착되고 상기 가변측 풀리(30)의 외측에 설치된다. The piston 40 is mounted on the input shaft and the output shaft, respectively, and is installed outside the variable side pulley 30.

상기 피스톤(40)의 일측과 상기 가변측 풀리(30)의 사이에는 압력유체를 공급받도록 유압챔버(50)가 형성된다. A hydraulic chamber 50 is formed between one side of the piston 40 and the variable side pulley 30 to receive a pressure fluid.

상기 피스톤(40)의 타측에는 상기 피스톤(40)을 지지하고 상기 가변측 풀리(30)를 회전시키기 위하여 리어커버(60)에 압입되어 베어링부재(70)가 설치된다.The other side of the piston 40 is pressed into the rear cover 60 to support the piston 40 and to rotate the variable side pulley 30 is provided with a bearing member 70.

그리고, 엔진(미도시)의 구동력에 의하여 생성되는 압력유체를 상기 유압챔버(50)에 공급하도록 상기 베어링부재(70)와 상기 피스톤(70)에 유로(80)가 형성된다.In addition, a flow path 80 is formed in the bearing member 70 and the piston 70 to supply a pressure fluid generated by a driving force of an engine (not shown) to the hydraulic chamber 50.

상기 압력유체는 상기 리어커버(60) 측에 형성된 유로(85)와 상기 베어링부재(70)와 상기 피스톤(40)에 형성된 유로(80)를 통하여 상기 유압챔버(50)에 공급된다.The pressure fluid is supplied to the hydraulic chamber 50 through a flow path 85 formed on the rear cover 60 and a flow path 80 formed on the bearing member 70 and the piston 40.

상기와 같이 형성된 상기 유로(80,85)는 무단변속기내의 오일 누수량 과다로 인한 차량의 초기 발진응답성 문제를 해결하고 종래의 가변측 풀리(30)내부에 형성된 유로의 가공을 생략할 수 있어 상기 가변측 풀리(30)의 내구성을 향상시키는 효과가 있다.The flow paths 80 and 85 formed as described above can solve the problem of the initial oscillation response of the vehicle due to the excessive amount of oil leakage in the continuously variable transmission and can omit the processing of the flow path formed inside the conventional variable side pulley 30. There is an effect of improving the durability of the variable side pulley 30.

상기 베어링부재(70)와 상기 피스톤(40)에 형성된 유로(80)는 다수개의 관통 홀(80)로 형성될 수 있다.The flow path 80 formed in the bearing member 70 and the piston 40 may be formed of a plurality of through holes 80.

또한, 상기 유로(80)에는 상기 베어링부재(70)와 상기 피스톤(40)에 형성된 유로(80)가 연통하도록 유로관(미도시)이 압입되어 설치될 수 있다.In addition, a flow path tube (not shown) may be press-fitted in the flow path 80 such that the bearing member 70 and the flow path 80 formed in the piston 40 communicate with each other.

특히, 상기 유로(80)는 상기 베어링부재(70)의 이너레이스(inner race)에 형성될 수 있다.In particular, the flow path 80 may be formed in an inner race of the bearing member 70.

상기와 같이 구성되는 본 발명에 따른 차량용 무단변속기의 작용을 설명하면 다음과 같다.Referring to the operation of the continuously variable transmission for a vehicle according to the present invention configured as described above are as follows.

엔진의 구동력에 의하여 생성되는 압력유체는 상기 리어커버(60)에 형성된 유로(85)를 거쳐 상기 베어링부재(70)와 상기 피스톤(40)에 형성된 유로(80)에 공급된다.The pressure fluid generated by the driving force of the engine is supplied to the flow path 80 formed in the bearing member 70 and the piston 40 via the flow path 85 formed in the rear cover 60.

그리고, 상기 압력유체는 상기 베어링부재(70)와 상기 피스톤(40)에 형성된 유로(80)를 거쳐 상기 유압챔버(50)에 공급되어 상기 가변측 풀리(30)를 작동시키게 된다.In addition, the pressure fluid is supplied to the hydraulic chamber 50 through the flow path 80 formed in the bearing member 70 and the piston 40 to operate the variable side pulley 30.

본원 발명에 따른 차량용 무단변속기는 엔진의 구동력에 의하여 생성되는 압력유체를 베어링부재와 피스톤에 형성된 유로를 통하여 유압챔버에 공급함으로써, 차량의 초기 발진 응답성과 무단 변속기내의 오일 누수량의 과다 문제를 해결하고 프라이머리 풀리와 세컨더리 풀리의 내구성을 향상시키는 효과가 있다.The continuously variable transmission for a vehicle according to the present invention supplies the pressure fluid generated by the driving force of the engine to the hydraulic chamber through a flow path formed in the bearing member and the piston, thereby solving the problem of the initial starting responsiveness of the vehicle and the excessive amount of oil leakage in the continuously variable transmission. It has the effect of improving the durability of the primary pulley and the secondary pulley.

Claims (4)

무단변속기의 입력축에 장착되는 프라이머리 풀리와 출력축에 장착되는 세컨더리 풀리에 좌/우로 이동가능하게 각각 설치된 가변측 풀리와;A variable side pulley installed on the primary pulley mounted on the input shaft of the continuously variable transmission and the second pulley mounted on the output shaft so as to be movable left and right; 상기 입력축과 출력축에 각각 장착되고, 상기 가변측 풀리의 외측에 설치된 피스톤과;Pistons mounted to the input shaft and the output shaft, respectively, and disposed outside the variable side pulley; 상기 피스톤의 일측과 상기 가변측 풀리의 사이에 압력유체를 공급받도록 형성된 유압챔버와;A hydraulic chamber configured to receive a pressure fluid between one side of the piston and the variable side pulley; 상기 피스톤의 타측에는 상기 피스톤을 지지하고, 상기 가변측 풀리를 회전시키기 위하여 리어커버에 압입되어 설치된 베어링부재와;A bearing member installed on the other side of the piston to support the piston and to be press-fitted to a rear cover to rotate the variable side pulley; 엔진의 구동력에 의하여 생성되는 압력유체를 상기 유압챔버에 공급하도록 상기 베어링부재와 상기 피스톤에 형성된 유로를 포함하는 차량용 무단변속기.And a flow path formed in the bearing member and the piston to supply the pressure fluid generated by the driving force of the engine to the hydraulic chamber. 청구항 1에 있어서,The method according to claim 1, 상기 유로는 상기 베어링부재와 상기 피스톤에 형성된 다수개의 관통홀로 구성된 것을 특징으로 하는 차량용 무단변속기.The flow path is a continuously variable transmission for a vehicle, characterized in that composed of a plurality of through holes formed in the bearing member and the piston. 청구항 1에 있어서,The method according to claim 1, 상기 유로에는 상기 베어링부재와 상기 피스톤에 형성된 유로가 연통하도록 유로관이 압입되어 설치된 것을 특징으로 하는 차량용 무단변속기. And a flow path tube is press-fitted to the flow path such that the bearing member and the flow path formed in the piston communicate with each other. 청구항 1 내지 청구항 3 중 적어도 어느 한 청구항에 있어서,The method according to any one of claims 1 to 3, 상기 유로는 상기 베어링부재의 이너레이스에 형성된 것을 특징으로 하는 차량용 무단변속기.And the flow passage is formed in the inner race of the bearing member.
KR20060106454A 2006-10-31 2006-10-31 Continuously variable transmission for vehicle KR100837937B1 (en)

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