KR20100024754A - Stepless transmission - Google Patents

Stepless transmission Download PDF

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KR20100024754A
KR20100024754A KR1020080083458A KR20080083458A KR20100024754A KR 20100024754 A KR20100024754 A KR 20100024754A KR 1020080083458 A KR1020080083458 A KR 1020080083458A KR 20080083458 A KR20080083458 A KR 20080083458A KR 20100024754 A KR20100024754 A KR 20100024754A
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South Korea
Prior art keywords
friction member
input
output
friction
shaft
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KR1020080083458A
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Korean (ko)
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KR101015101B1 (en
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김철진
김홍식
김진우
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현대 파워텍 주식회사
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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
    • 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
    • F16H9/08—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 conical drum
    • 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
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)

Abstract

PURPOSE: A stepless transmission is provided to implement a simple structure by changing transmission rate with an input friction member, output friction member, and a friction ring. CONSTITUTION: An input shaft(10) transfers power. An output shaft(20) is connected to the input shaft. An input friction member(30) is installed at the input shaft. A cross section is varied according to an axial direction. The output friction member(40) is installed in the output shaft. A cross section is varied according to an axial direction. A friction ring(50) interlinks the input friction member and the output friction member. The friction ring is slidable.

Description

무단변속기 {STEPLESS TRANSMISSION}CVT {STEPLESS TRANSMISSION}

본 발명은 무단변속기에 관한 것으로서, 특히, 구조가 단순화되고, 부품수가 절감되는 무단변속기에 관한 것이다.The present invention relates to a continuously variable transmission, and more particularly, to a continuously variable transmission in which the structure is simplified and the number of parts is reduced.

일반적으로 무단변속기는 자동변속기(automatic transmission)의 일종으로서 양측 풀리의 폭을 유압으로 조정하여 감속비를 약 0.5~2.5배 사이에서 무단계로 변화시키도록 되어 있다.In general, the continuously variable transmission is a type of automatic transmission, and the width of both pulleys is hydraulically adjusted to change the reduction ratio steplessly between about 0.5 to 2.5 times.

이러한 무단변속기는 구동측인 입력축(primary shaft, drive shaft)과 출력축(secondary shaft)에 고정 플랜지(flange)가 형성되고, 고정 플랜지에 대응하여 이동할 수 있도록 입력축 및 출력축에 가동 플랜지가 결합된다.The continuously variable transmission includes a fixed flange formed at a primary shaft (drive shaft) and an output shaft (secondary shaft) on the driving side, and a movable flange is coupled to the input shaft and the output shaft so as to move corresponding to the fixed flange.

고정 플랜지와 가동 플랜지에 의해 풀리가 구성되며, 양측 풀리는 벨트(belt) 또는 체인(chain)으로 연결되어 회전동력을 전달한다.The pulley is composed of a fixed flange and a movable flange, and both pulleys are connected by a belt or a chain to transmit rotational power.

한편 무단변속기는 대부분 구동측 작동원 및 종동측 작동원이 유압식으로 되거나 또는 구동측이 기계식으로 된 것이 있으며, 이륜차 등의 경우에는 구동측 및 종동측이 원심식 및 토오크 램프식으로 이루어진 경우도 있다.On the other hand, continuously variable transmissions are those in which the driving side driver and the driven side operator are hydraulic or the driving side is mechanical. In the case of a two-wheeled vehicle, the driving side and the driven side may be of a centrifugal type or a torque lamp type. .

통상적인 무단변속기는, 입력축 및 출력축에 고정 플랜지가 일체로 형성되고, 고정 플랜지에 대향하여 축방향 이동이 가능하도록 입력축 및 출력축에 가동 플랜지가 삽입되어 풀리를 형성하면서 이 풀리에 벨트가 끼워져 있다.In a conventional continuously variable transmission, a fixed flange is integrally formed on the input shaft and the output shaft, and a belt is fitted to the pulley while the movable flange is inserted into the input shaft and the output shaft to form a pulley so as to be able to move in an axial direction opposite to the fixed flange.

가동 플랜지이 몸체와 입력축 및 출력축 사이에는 스플라인(spline)의 역할을 행하는 볼이 끼워져 가동 플랜지의 이동을 원활하게 하며, 또한 고정 플랜지와 가동 플랜지의 상호 대향하는 측면부는 경사면으로 형성되어 내측의 원주방향으로부터 외측의 원주방향으로 그 간격이 점차 증가한다.The movable flange has a splined ball between the body, the input shaft and the output shaft to facilitate the movement of the movable flange. In addition, the mutually opposite side portions of the fixed flange and the movable flange are formed to be inclined so that they can be moved from the inner circumferential direction. The gap gradually increases in the outer circumferential direction.

따라서 차량의 주행 시 가감속 신호에 따라 유압이 가동 플랜지를 축방향으로 이동시키며, 벨트가 풀리의 움직임에 의해 변위되면서 즉, 회전반경의 변화에 의해 마치 기어비를 변환시키는 것처럼 무단변속이 이루어진다.Therefore, the hydraulic pressure moves the movable flange in the axial direction according to the acceleration / deceleration signal while the vehicle is running, and the belt is displaced by the movement of the pulley, that is, the stepless speed shift is made as if the gear ratio is changed by the change of the rotation radius.

종래 기술에 따른 무단변속기는 고정 플랜지 및 가동 플랜지가 결합되어 풀리를 이루기 때문에 구조가 복잡하고, 부품수를 절감하기 어려운 문제점이 있다.The continuously variable transmission according to the prior art has a problem in that the structure is complicated and it is difficult to reduce the number of parts since the fixed flange and the movable flange form a pulley.

따라서 이를 개선할 필요성이 요청된다.Therefore, there is a need for improvement.

본 발명은 상기와 같은 문제점들을 개선하기 위해 안출된 것으로서, 구조가 단순화되고, 부품수가 절감되는 무단변속기를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a continuously variable transmission in which the structure is simplified and the number of parts is reduced.

상기와 같은 목적을 달성하기 위하여 본 발명은, 동력이 전달되는 입력축; 상기 입력축과 연동되는 출력축; 상기 입력축에 구비되고, 축 방향을 따라 단면적이 변화되는 입력마찰부재; 상기 출력축에 구비되고, 축 방향을 따라 단면적이 변화되는 출력마찰부재; 및 상기 입력마찰부재와 상기 출력마찰부재를 연결하고, 축 방향으로 슬라이딩 가능하게 구비되는 마찰링을 포함하는 것을 특징으로 하는 무단변속기를 제공한다.In order to achieve the above object, the present invention, the power transmission shaft; An output shaft interlocked with the input shaft; An input friction member provided at the input shaft and having a cross-sectional area changed along an axial direction; An output friction member provided at the output shaft and having a cross-sectional area changed along an axial direction; And a friction ring which connects the input friction member and the output friction member and is slidable in an axial direction.

또한, 본 발명의 상기 입력마찰부재와 상기 출력마찰부재는 원추 모양으로 이루어지고, 상기 입력마찰부재의 굵은 측 단부에 상기 출력마찰부재의 얇은 측 단부가 대응되게 배치되는 것을 특징으로 하는 무단변속기를 제공한다.In addition, the input friction member and the output friction member of the present invention is made of a conical shape, the stepless transmission characterized in that the thin side end of the output friction member corresponding to the thick side end of the input friction member is disposed correspondingly. to provide.

또한, 본 발명의 상기 입력마찰부재는 상기 입력축에 축 방향으로 유동 가능하게 구비되고, 상기 입력축에는 상기 입력마찰부재를 상기 마찰링 방향으로 가압 하는 가압부가 구비되는 것을 특징으로 하는 무단변속기를 제공한다.In addition, the input friction member of the present invention is provided on the input shaft to be able to flow in the axial direction, the input shaft provides a continuously variable transmission characterized in that the pressing portion for pressing the input friction member in the friction ring direction is provided. .

또한, 본 발명은 상기 마찰링을 상기 입력마찰부재 및 상기 출력마찰부재를 따라 슬라이딩시키는 가변부를 더 포함하는 것을 특징으로 하는 무단변속기를 제공한다.In another aspect, the present invention provides a continuously variable transmission comprising a variable portion for sliding the friction ring along the input friction member and the output friction member.

또한, 본 발명의 상기 출력마찰부재는 상기 출력축에 축 방향으로 유동 가능하게 구비되고, 상기 출력축에는 상기 출력마찰부재를 상기 마찰링 방향으로 가압하는 가압부가 구비되는 것을 특징으로 하는 무단변속기를 제공한다.In addition, the output friction member of the present invention is provided on the output shaft to be movable in the axial direction, the output shaft provides a continuously variable transmission characterized in that the pressing portion for pressing the output friction member in the friction ring direction. .

또한, 본 발명은 상기 마찰링을 상기 입력마찰부재 및 상기 출력마찰부재를 따라 슬라이딩시키는 가변부를 더 포함하는 것을 특징으로 하는 무단변속기를 제공한다.In another aspect, the present invention provides a continuously variable transmission comprising a variable portion for sliding the friction ring along the input friction member and the output friction member.

본 발명에 따른 무단변속기는 입력마찰부재, 출력마찰부재 및 마찰링에 의해 다양하게 변속비가 가변되면 동력전달을 행할 수 있으므로 구조가 간단하고, 부품수가 절감되어 변속기 제작에 소요되는 시간 및 비용을 절감할 수 있고, 제품의 경량화를 이룰 수 있는 이점이 있다.The continuously variable transmission according to the present invention can transmit power when the transmission ratio is varied by an input friction member, an output friction member and a friction ring, so that the structure is simple and the number of parts is reduced, thereby reducing the time and cost required for manufacturing the transmission. There is an advantage that can be made, and the weight of the product can be achieved.

이하, 첨부된 도면들을 참조하여 본 발명의 일 실시예에 따른 무단변속기를 설명한다.Hereinafter, a continuously variable transmission according to an exemplary embodiment of the present invention will be described with reference to the accompanying drawings.

설명의 편의를 위해 차량용 무단변속기를 예로 들어 설명한다.For convenience of description, it will be described taking an example of a continuously variable vehicle.

이러한 과정에서 도면에 도시된 선들의 두께나 구성요소의 크기 등은 설명의 명료성과 편의상 과장되게 도시되어 있을 수 있다.In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로써, 이는 사용자, 운용자의 의도 또는 관례에 따라 달라질 수 있다.In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

그러므로 이러한 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Therefore, the definitions of these terms should be made based on the contents throughout the specification.

도 1은 본 발명의 일 실시예에 따른 무단변속기의 구성이 도시된 사시도이고, 도 2는 본 발명의 일 실시예에 따른 무단변속기의 구성이 도시된 정면도이다.1 is a perspective view showing a configuration of a continuously variable transmission according to an embodiment of the present invention, Figure 2 is a front view showing the configuration of a continuously variable transmission according to an embodiment of the present invention.

또한, 도 3은 본 발명의 일 실시예에 따른 무단변속기의 고속 주행상태가 도시된 단면도이고, 도 4는 본 발명의 일 실시예에 따른 무단변속기의 저속 주행상태가 도시된 단면도이고, 도 5는 본 발명의 일 실시예에 따른 문단변속기가 도시된 단면도이다.3 is a cross-sectional view showing a high-speed driving state of the continuously variable transmission according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing a low-speed driving state of the continuously variable transmission according to an embodiment of the present invention, Figure 5 Is a cross-sectional view showing a paragraph transmission according to an embodiment of the present invention.

도 1 내지 도 5를 참조하면, 본 발명의 일 실시예에 따른 무단변속기는 동력이 전달되는 입력축(10)과, 입력축(10)과 연동되는 출력축(20)과, 입력축(10)에 구비되고, 축 방향을 따라 단면적이 변화되는 입력마찰부재(30)와, 출력축(20)에 구비되고, 축 방향을 따라 단면적이 변화되는 출력마찰부재(40)와, 입력마찰부재(30)와 출력마찰부재(40)를 연결하고, 축 방향으로 슬라이딩 가능하게 구비되는 마찰링(50)을 포함한다.1 to 5, the continuously variable transmission according to an embodiment of the present invention is provided on an input shaft 10 to which power is transmitted, an output shaft 20 interlocked with the input shaft 10, and an input shaft 10. , The input friction member 30 having a cross-sectional area that changes in the axial direction, the output frictional member 40 that is provided on the output shaft 20, and the cross-sectional area that changes in the axial direction, and the input friction member 30 and the output friction. The friction ring 50 is connected to the member 40 and slidable in the axial direction.

엔진이 구동되면 입력축(10)을 따라 구동력이 전달되는데, 입력축(10)에 구 비되는 입력마찰부재(30)가 회전되므로 입력마찰부재(30)와 출력마찰부재(40)의 둘레면에 감긴 마찰링(50)이 회전되면서 출력마찰부재(40) 및 출력축(20)이 회전되어 동력전달이 이루어지게 된다.When the engine is driven, a driving force is transmitted along the input shaft 10. Since the input friction member 30 provided on the input shaft 10 is rotated, the engine is wound around the input friction member 30 and the output friction member 40. As the friction ring 50 is rotated, the output friction member 40 and the output shaft 20 are rotated so that power is transmitted.

여기서, 입력마찰부재(30)와 출력마찰부재(40)는 원추 모양으로 이루어지고, 입력마찰부재(30)의 굵은 측에 출력마찰부재(40)의 얇은 측이 대응되게 배치된다.Here, the input friction member 30 and the output friction member 40 is formed in a conical shape, the thin side of the output friction member 40 is disposed to correspond to the thick side of the input friction member 30.

따라서 입력마찰부재(30)의 굵은 측에 마찰링(50)이 위치되면 마찰링(50)은 출력마찰부재(40)의 얇은 측에 감기게 된다.Therefore, when the friction ring 50 is positioned on the thick side of the input friction member 30, the friction ring 50 is wound on the thin side of the output friction member 40.

반대로 입력마찰부재(30)의 얇은 측에 마찰링(50)이 위치되면 마찰링(50)은 출력마찰부재(40)의 굵은 측에 감기게 된다.On the contrary, when the friction ring 50 is positioned on the thin side of the input friction member 30, the friction ring 50 is wound on the thick side of the output friction member 40.

상기한 바와 같은 구조 및 작동에 의해 입력축(10)으로부터 출력축(20)으로 전달되는 변속비가 가변된다.By the structure and operation as described above, the transmission ratio transmitted from the input shaft 10 to the output shaft 20 is variable.

입력마찰부재(30)와 출력마찰부재(40)는 입력축(10)과 출력축(20)에 축 방향으로 유동 가능하게 구비되고, 입력축(10)과 출력축(20)에는 입력마찰부재(30)와 출력마찰부재(40)를 마찰링(50) 방향으로 가압하는 가압부(60)가 구비된다.The input friction member 30 and the output friction member 40 are provided on the input shaft 10 and the output shaft 20 so as to be able to flow in the axial direction, and the input friction member 30 and the input shaft 10 and the output shaft 20. Pressing portion 60 for pressing the output friction member 40 toward the friction ring 50 is provided.

이로써, 마찰링(50)의 위치가 결정되면 가압부(60)에 의해 입력마찰부재(30)와 출력마찰부재(40)가 마찰링(50) 방향으로 가압되므로 마찰링(50)이 입력마찰부재(30)와 출력마찰부재(40)의 둘레면에 밀착되어 마찰링(50)과 입력마찰부재(30) 및 출력마찰부재(40) 사이에 슬립이 발생되는 것을 억제할 수 있게 된다.Thus, when the position of the friction ring 50 is determined, the friction ring 50 is input friction because the input friction member 30 and the output friction member 40 are pressed in the direction of the friction ring 50 by the pressing unit 60. In close contact with the peripheral surface of the member 30 and the output friction member 40, it is possible to suppress the occurrence of slip between the friction ring 50, the input friction member 30 and the output friction member 40.

입력마찰부재(30) 및 출력마찰부재(40)가 입력축(10) 및 출력축(20)에 소정량 슬라이딩 가능하고, 동력 전달을 행할 수 있도록 입력축(10) 및 출력축(20)에 형성되는 스플라인기어(12, 22)가 슬라이딩 가능하게 기어물림 되는 슬라이딩홈부(32, 42)가 입력마찰부재(30) 및 출력마찰부재(40)에 형성된다.A spline gear formed on the input shaft 10 and the output shaft 20 so that the input friction member 30 and the output friction member 40 can slide a predetermined amount on the input shaft 10 and the output shaft 20 and transmit power. Sliding grooves 32 and 42, which 12 and 22 are slidably geared, are formed in the input friction member 30 and the output friction member 40.

또한, 스플라인기어(12, 22)와 슬리이딩홈부(32, 42) 내벽 사이에는 탄성부재(34, 44)가 구비되어 가압부(60)에 의한 외력이 해제되면 탄성부재(34, 44)의 복원력에 의해 입력마찰부재(30)와 출력마찰부재(40)가 원래의 위치로 슬라이딩된다.In addition, elastic members 34 and 44 are provided between the spline gears 12 and 22 and the inner walls of the sliding grooves 32 and 42, so that when the external force is released by the pressing unit 60, the elastic members 34 and 44 By the restoring force, the input friction member 30 and the output friction member 40 slide to their original positions.

이러한 가압부(60)는 입력축(10) 또는 출력축(20) 어느 한 축에만 설치되어도 상기한 작동이 가능하다.The pressing unit 60 may be operated as described above even if only one shaft of the input shaft 10 or the output shaft 20 is installed.

아울러, 본 발명의 일 실시예에 따른 무단변속기는 마찰링(50)을 입력마찰부재(30) 및 출력마찰부재(40)를 따라 슬라이딩시키는 가변부(70)를 더 포함한다.In addition, the continuously variable transmission according to an embodiment of the present invention further includes a variable part 70 for sliding the friction ring 50 along the input friction member 30 and the output friction member 40.

이 가변부(70)의 구동에 의해 마찰링(50)이 입력마찰부재(30) 및 출력마찰부재(40)의 경사면을 따라 슬라이딩 되면서 마찰링(50)이 위치되는 부분의 입력마찰부재(30) 및 출력마찰부재(40)의 단면적이 가변되는 효과가 나타나게 된다.The friction ring 50 slides along the inclined surfaces of the input friction member 30 and the output friction member 40 by the driving of the variable part 70, and the input friction member 30 of the portion where the friction ring 50 is positioned. And the cross-sectional area of the output friction member 40 is varied.

여기서, 마찰링(50)은 입력마찰부재(30) 및 출력마찰부재(40)의 경사면에 직각을 이루도록 설치되므로 입력마찰부재(30) 및 출력마찰부재(40)의 경사면을 따라 슬라이딩되는 작동을 용이하게 행할 수 있게 된다.Here, the friction ring 50 is installed to form a right angle to the inclined surface of the input friction member 30 and the output friction member 40, the sliding operation along the inclined surface of the input friction member 30 and the output friction member 40 It can be performed easily.

상기와 같이 구성된 본 발명에 따른 무단변속기의 동작을 살펴보면 다음과 같다.Looking at the operation of the continuously variable transmission according to the present invention configured as described above are as follows.

먼저, 엔진이 구동되어 입력축(10)을 통해 동력이 전달되면 입력마찰부재(30)가 회전되므로 마찰링(50)에 의해 연결된 출력마찰부재(40)가 회전되어 출력축(20)으로 동력이 전달된다.First, when the engine is driven and the power is transmitted through the input shaft 10, the input friction member 30 is rotated so that the output friction member 40 connected by the friction ring 50 is rotated to transmit power to the output shaft 20. do.

이때, 가압부(60)에 의해 입력마찰부재(30) 및 출력마찰부재(40)는 마찰링(50) 측으로 가압되므로 탄성부재(34, 44)가 압축되면서 입력마찰부재(30)와 출력마찰부재(40)가 마찰링(50) 측으로 유동되므로 마찰링(50)이 입력마찰부재(30)와 출력마찰부재(40)의 둘레면에 밀착된다.At this time, since the input friction member 30 and the output friction member 40 are pressed toward the friction ring 50 by the pressing unit 60, the elastic members 34 and 44 are compressed and the input friction member 30 and the output friction Since the member 40 flows toward the friction ring 50, the friction ring 50 is in close contact with the circumferential surface of the input friction member 30 and the output friction member 40.

이로써, 입력마찰부재(30) 및 출력마찰부재(40)와 마찰링(50) 사이에서 발생되는 슬립을 방지하므로 정확한 동력전달이 이루어지도록 한다.As a result, the slip generated between the input friction member 30 and the output friction member 40 and the friction ring 50 is prevented so that accurate power transmission is achieved.

운전자의 조작에 의해 변속비가 가변되면 가변부(70)가 구동되어 마찰링(50)을 입력마찰부재(30) 및 출력마찰부재(40)의 경사면을 따라 슬라이딩시키게 된다.When the speed ratio is changed by the driver's operation, the variable part 70 is driven to slide the friction ring 50 along the inclined surfaces of the input friction member 30 and the output friction member 40.

이때, 마찰링(50)이 입력마찰부재(30)의 굵은 측과 출력마찰부재(40)의 얇은 측에 배치되면 입력마찰부재(30)가 1회전 할 때에 출력마찰부재(40)가 다수 차례 회전하게 되므로 변속비가 증가되어 고속 주행을 행할 수 있게 된다.At this time, when the friction ring 50 is disposed on the thick side of the input friction member 30 and the thin side of the output friction member 40, the output friction member 40 rotates a plurality of times when the input friction member 30 is rotated once. Since the rotation speed is increased, the speed ratio is increased, thereby enabling high speed travel.

반대로 마찰링(50)이 입력마찰부재(30)의 얇은 측과 출력마찰부재(40)의 굵은 측에 배치되면 입력마찰부재(30)가 1회전 할 때에 출력마찰부재(40)가 1회전과 비교하여 적게 회전하게 되므로 변속비가 감소되어 저속 주행을 행할 수 있게 된다.On the contrary, when the friction ring 50 is disposed on the thin side of the input friction member 30 and the thick side of the output friction member 40, the output friction member 40 rotates once when the input friction member 30 is rotated once. In comparison, since the rotation is less, the speed ratio is reduced, so that low-speed driving can be performed.

여기서, 가압부(60)와 가변부(70)는 당업자가 용이하게 실시할 수 있는 기술구성이므로 자세한 설명 및 다른 실시예에 대한 설명은 생략하기로 한다.Here, the pressing unit 60 and the variable unit 70 is a technical configuration that can be easily implemented by those skilled in the art, so detailed description and description of other embodiments will be omitted.

본 발명은 도면에 도시되는 일 실시예를 참고로 하여 설명되었으나, 이는 예시적인 것에 불과하며, 당해 기술이 속하는 분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

또한, 차량의 무단변속기를 예로 들어 설명하였으나, 이는 예시적인 것에 불과하며, 차량이 아닌 다른 제품에도 본 발명의 무단변속기가 사용될 수 있다.In addition, the CVT of the vehicle has been described as an example, but this is merely an example, and the CVT of the present invention may be used in a product other than the vehicle.

따라서 본 발명의 진정한 기술적 보호범위는 아래의 특허청구범위에 의해서 정하여져야 할 것이다.Therefore, the true technical protection scope of the present invention will be defined by the claims below.

도 1은 본 발명의 일 실시예에 따른 무단변속기의 구성이 도시된 사시도이다.1 is a perspective view showing the configuration of a continuously variable transmission according to an embodiment of the present invention.

도 2는 본 발명의 일 실시예에 따른 무단변속기의 구성이 도시된 정면도이다.2 is a front view showing the configuration of a continuously variable transmission according to an embodiment of the present invention.

도 3은 본 발명의 일 실시예에 따른 무단변속기의 고속 주행상태가 도시된 단면도이다.3 is a cross-sectional view showing a high-speed driving state of the continuously variable transmission according to an embodiment of the present invention.

도 4는 본 발명의 일 실시예에 따른 무단변속기의 저속 주행상태가 도시된 단면도이다.4 is a cross-sectional view showing a low-speed driving state of the continuously variable transmission according to an embodiment of the present invention.

도 5는 본 발명의 일 실시예에 따른 문단변속기가 도시된 단면도이다.5 is a cross-sectional view showing the paragraph transmission according to an embodiment of the present invention.

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

10 : 입력축 20 : 출력축10: input shaft 20: output shaft

30 : 입력마찰부재 40 : 출력마찰부재30: input friction member 40: output friction member

50 : 마찰링 60 : 가압부50: friction ring 60: pressing portion

70 : 가변부70: variable part

Claims (6)

동력이 전달되는 입력축;An input shaft through which power is transmitted; 상기 입력축과 연동되는 출력축;An output shaft interlocked with the input shaft; 상기 입력축에 구비되고, 축 방향을 따라 단면적이 변화되는 입력마찰부재;An input friction member provided at the input shaft and having a cross-sectional area changed along an axial direction; 상기 출력축에 구비되고, 축 방향을 따라 단면적이 변화되는 출력마찰부재; 및An output friction member provided at the output shaft and having a cross-sectional area changed along an axial direction; And 상기 입력마찰부재와 상기 출력마찰부재를 연결하고, 축 방향으로 슬라이딩 가능하게 구비되는 마찰링을 포함하는 것을 특징으로 하는 무단변속기.And a friction ring configured to connect the input friction member and the output friction member and to be slidable in an axial direction. 제1항에 있어서,The method of claim 1, 상기 입력마찰부재와 상기 출력마찰부재는 원추 모양으로 이루어지고, 상기 입력마찰부재의 굵은 측 단부에 상기 출력마찰부재의 얇은 측 단부가 대응되게 배치되는 것을 특징으로 하는 무단변속기.And the input friction member and the output friction member are formed in a conical shape, and the thin end portion of the output friction member is disposed to correspond to the thick side end portion of the input friction member. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 상기 입력마찰부재는 상기 입력축에 축 방향으로 유동 가능하게 구비되고, 상기 입력축에는 상기 입력마찰부재를 상기 마찰링 방향으로 가압하는 가압부가 구 비되는 것을 특징으로 하는 무단변속기.The input friction member is provided to be able to flow in the axial direction on the input shaft, the continuously variable transmission, characterized in that the pressing portion for pressing the input friction member in the friction ring direction. 제3항에 있어서,The method of claim 3, 상기 마찰링을 상기 입력마찰부재 및 상기 출력마찰부재를 따라 슬라이딩시키는 가변부를 더 포함하는 것을 특징으로 하는 무단변속기.And a variable portion configured to slide the friction ring along the input friction member and the output friction member. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 상기 출력마찰부재는 상기 출력축에 축 방향으로 유동 가능하게 구비되고, 상기 출력축에는 상기 출력마찰부재를 상기 마찰링 방향으로 가압하는 가압부가 구비되는 것을 특징으로 하는 무단변속기.The output friction member is provided to be able to flow in the axial direction on the output shaft, the output shaft is a continuously variable transmission, characterized in that the pressing portion for pressing the output friction member in the friction ring direction. 제5항에 있어서,The method of claim 5, 상기 마찰링을 상기 입력마찰부재 및 상기 출력마찰부재를 따라 슬라이딩시키는 가변부를 더 포함하는 것을 특징으로 하는 무단변속기.And a variable portion configured to slide the friction ring along the input friction member and the output friction member.
KR1020080083458A 2008-08-26 2008-08-26 Stepless transmission KR101015101B1 (en)

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CN107323598A (en) * 2017-06-30 2017-11-07 成都泛米科技有限公司 A kind of automatic catch bicycle

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CN105909741A (en) * 2016-04-28 2016-08-31 绍兴文理学院 Hydraulic operation belt type conical surface friction wheel automobile continuously variable transmission

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JP3855142B2 (en) * 1999-04-08 2006-12-06 允彦 丹原 Continuously variable transmission
KR100361929B1 (en) * 1999-09-10 2002-11-22 남성훈 Speed change friction apparatus
HRP20000024A9 (en) * 2000-01-17 2010-12-31 Jambrek Krunoslav Rotational motion transmitter including conical rollers and friction ring-shaped assembly
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CN107323598A (en) * 2017-06-30 2017-11-07 成都泛米科技有限公司 A kind of automatic catch bicycle

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