KR100962867B1 - Belt Type Continuous Variable Transmission - Google Patents

Belt Type Continuous Variable Transmission Download PDF

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KR100962867B1
KR100962867B1 KR1020080081264A KR20080081264A KR100962867B1 KR 100962867 B1 KR100962867 B1 KR 100962867B1 KR 1020080081264 A KR1020080081264 A KR 1020080081264A KR 20080081264 A KR20080081264 A KR 20080081264A KR 100962867 B1 KR100962867 B1 KR 100962867B1
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South Korea
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balance
fixing
balance housing
piston
variable transmission
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KR1020080081264A
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Korean (ko)
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KR20100022649A (en
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김현석
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • 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
    • F16H57/035—Gearboxes for gearing with endless flexible members
    • 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
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

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

Abstract

본 발명은 이동풀리에 장착되어 밸런스유압실을 형성하는 밸런스하우징이, 비록 이동풀리에 다소간의 변형이 발생하여도, 구조적으로 상기 이동풀리에 대하여 상대회전이 발생하는 것이 방지되도록 함으로써, 밸런스하우징의 압입면 및 스냅링과의 접촉면에서 마찰 및 마모가 발생하지 않도록 하여 밸런스유압실의 밀폐상태를 보다 안정적으로 확보하여 원심유압 밸런스 기능을 신뢰성 있게 제공하도록 하며, 마찰 및 마모로 인한 칩의 발생이 방지되어 각종 유압제어밸브 등의 작동신뢰성을 향상시켜줄 수 있도록 한다.According to the present invention, a balance housing mounted to a moving pulley to form a balance hydraulic chamber is structurally prevented from generating relative rotation with respect to the moving pulley even if some deformation occurs in the moving pulley. By preventing friction and abrasion from the contact surface of the press-fitting surface and the snap ring, the sealed state of the balance hydraulic chamber is more stably secured to provide a centrifugal hydraulic balance function reliably, and the occurrence of chips due to friction and wear is prevented. It can improve the operation reliability of various hydraulic control valves.

이동풀리, 밸런스하우징Movable pulley, balance housing

Description

벨트식 무단변속기{Belt Type Continuous Variable Transmission}Belt Type Continuous Variable Transmission {Belt Type Continuous Variable Transmission}

본 발명은 벨트식 무단변속기에 관한 것으로서, 보다 상세하게는 풀리의 동반경을 변화시키는 이동풀리의 구조에 관한 기술이다.The present invention relates to a belt-type continuously variable transmission, and more particularly, a technique related to the structure of a moving pulley for changing the companion diameter of the pulley.

베리에이터(variator)로서 벨트를 사용하는 무단변속기는 구동풀리와 종동풀리에 유압을 제공하여 힘의 평형관계에 의하여 상기 구동풀리와 종동풀리에 각각 구비된 이동풀리가 각각 구동축 및 종동축 상에서 직선 왕복운동하면서 벨트가 상기 구동풀리 및 종동풀리에 감기는 반경을 연속적으로 변경시킴으로써, 무단의 변속비를 구현하도록 하는 장치이다.The continuously variable transmission, which uses a belt as a variator, provides hydraulic pressure to the drive pulley and the driven pulley so that the movable pulleys provided on the drive pulley and the driven pulley are linearly reciprocated on the drive shaft and the driven shaft, respectively, by the force balance. By continuously changing the radius of the belt wound around the drive pulley and the driven pulley while moving, it is an apparatus for implementing a stepless speed ratio.

상기한 바와 같은 연속적인 변속비 제어를 위해 구동축 및 종동축 유압실에 유압을 작용시킬 때, 공급유압 이외에 풀리의 회전에 의한 원심유압이 작용하므로, 이 원심유압을 제거하기 위하여 종동축 유압실 뒤에 밸런스하우징을 이동풀리에 고정되도록 체결하여 종동측 유압피스톤과 밸런스하우징 사이에 밸런스유압실을 형성한다. 도 1 참고.When the hydraulic pressure is applied to the drive shaft and the driven shaft hydraulic chamber for continuous speed ratio control as described above, the centrifugal hydraulic pressure by the rotation of the pulley in addition to the supply hydraulic pressure acts, so that the balance behind the driven shaft hydraulic chamber to remove this centrifugal hydraulic pressure The housing is fastened to the moving pulley to form a balance hydraulic chamber between the driven hydraulic piston and the balance housing. See FIG. 1.

상기 밸런스하우징을 이동풀리에 밀폐된 상태로 고정하기 위하여, 종래에는 도 1에 도시된 바와 같이 밸런스하우징(500)을 이동풀리(502)의 내부에 압입하여 고정하고, 밸런스하우징(500)의 뒷면에 스냅링(504)을 체결하여 이동풀리(502)로부터 이탈되지 않도록 고정하는 방법이 사용되고 있다.In order to fix the balance housing in a sealed state to the moving pulley, the balance housing 500 is conventionally press-fitted into the moving pulley 502 as shown in FIG. 1, and the rear side of the balance housing 500 is fixed. A method of fastening the snap ring 504 to the fixing ring 504 so as not to be detached from the moving pulley 502 is used.

그런데, 상기한 바와 같은 구조로 밸런스하우징(500)을 이동풀리(502)에 고정한 구조에서는, 높은 유압과 벨트 접촉부의 반력에 의한 이동풀리(502)의 변형에 의해 상기 밸런스하우징(500)의 외경 압입면이 눌리거나 압입력이 약해지게 되는데, 이는 이동풀리(502)의 회전속도가 급격히 변화하는 경우에 회전관성력에 의해 상기 밸런스하우징(500)이 상기 이동풀리(502)에 대해 상대 회전이 발생하게 한다.However, in the structure in which the balance housing 500 is fixed to the movable pulley 502 in the above-described structure, the outer diameter of the balance housing 500 is caused by deformation of the movable pulley 502 due to high hydraulic pressure and reaction force of the belt contact portion. The pressing surface is pressed or the pressing force is weakened, which is caused by the rotational inertia of the balance housing 500 relative to the moving pulley 502 when the rotational speed of the moving pulley 502 changes rapidly. Let's do it.

따라서, 상기한 바와 같이 밸런스하우징(500)이 이동풀리(502)에 대해 상대 회전하게 되면, 상기 밸런스하우징(500)의 압입면 및 상기 스냅링(504)과의 접촉면에 마모가 발생되고, 상기한 바와 같은 마모가 진행됨에 따라 상기 밸런스하우징(500)의 외경 축소로 압입상태가 해제되어 밸런스유압실의 원심유압이 누설되어 원심유압 밸런스 기능을 상실하게 되면, 변속비제어가 정확하게 수행되지 않아 벨트의 미끄러짐이 발생하게 되는 문제점이 있다.Therefore, as described above, when the balance housing 500 relatively rotates with respect to the movable pulley 502, wear occurs on the press-fit surface of the balance housing 500 and the contact surface of the snap ring 504. As the wear progresses as described above, when the press-in state is released due to the reduction of the outer diameter of the balance housing 500, the centrifugal hydraulic pressure of the balance hydraulic chamber is leaked, and the centrifugal hydraulic balance function is lost. There is a problem that occurs.

또한, 상기와 같은 마모는 다량의 칩을 발생시켜서 각종 유압제어밸브의 오작동을 유발하는 등의 문제를 야기하는 원인이 되고 있다.In addition, such wear causes a large amount of chips to cause problems such as malfunction of various hydraulic control valves.

본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 이동풀리에 장착되어 밸런스유압실을 형성하는 밸런스하우징이, 비록 이동풀리에 다소간의 변형이 발생하여도, 구조적으로 상기 이동풀리에 대하여 상대회전이 발생하는 것이 방지되도록 함으로써, 밸런스하우징의 압입면 및 스냅링과의 접촉면에서 마찰 및 마모가 발생하지 않도록 하여 밸런스유압실의 밀폐상태를 보다 안정적으로 확보하여 원심유압 밸런스 기능을 신뢰성 있게 제공하도록 하며, 마찰 및 마모로 인한 칩의 발생이 방지되어 각종 유압제어밸브 등의 작동신뢰성을 향상시켜줄 수 있도록 한 벨트식 무단변속기를 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, and the balance housing, which is mounted on the movable pulley to form the balance hydraulic chamber, is structurally provided with respect to the movable pulley even if some deformation occurs in the movable pulley. By preventing relative rotation from occurring, friction and abrasion are prevented from occurring at the press-fitting surface of the balance housing and the contact surface with the snap ring to ensure the sealed state of the balance hydraulic chamber more stably to provide the centrifugal hydraulic balance function reliably. In addition, the purpose of the present invention is to provide a belt-type continuously variable transmission that can prevent the occurrence of chips due to friction and wear to improve the operation reliability of various hydraulic control valves.

상기한 바와 같은 목적을 달성하기 위하여 안출된 본 발명 벨트식 무단변속기는Belt belt continuously variable invention of the present invention devised to achieve the object as described above

이동풀리의 내경부에 외경부가 압입되어 밸런스유압실을 형성하는 밸런스하우징과;A balance housing which press-fits an outer diameter part to an inner diameter part of the moving pulley to form a balance hydraulic chamber;

상기 이동풀리 내부에 설치되는 유압피스톤을 고정하는 피스톤고정스토퍼와;A piston fixing stopper for fixing a hydraulic piston installed inside the moving pulley;

상기 밸런스하우징의 내경부와 상기 피스톤고정스토퍼 사이에 상호 대응하도록 반경방향으로 돌출 및 함몰되게 형성되어 상기 밸런스하우징과 피스톤고정스토퍼의 상대회전을 억제하도록 된 회전구속수단;Rotational restraining means protruded and recessed in a radial direction so as to correspond to each other between the inner diameter portion of the balance housing and the piston fixing stopper to suppress relative rotation of the balance housing and the piston fixing stopper;

을 포함하여 구성된 것을 특징으로 한다.And a control unit.

상기 회전구속수단은The rotation restraining means

상기 밸런스하우징에서 상기 피스톤고정스토퍼를 향하여 반경방향 내측으로 돌출된 적어도 하나 이상의 고정돌기와;At least one fixing protrusion protruding radially inward from the balance housing toward the piston fixing stopper;

상기 고정돌기가 삽입되도록 상기 피스톤고정스토퍼에 형성된 고정홈;A fixing groove formed in the piston fixing stopper to insert the fixing protrusion;

으로 구성되도록 할 수 있다.It can be configured as.

또한, 상기 회전구속수단은In addition, the rotational restriction means

상기 피스톤고정스토퍼에서 상기 밸런스하우징을 향하여 반경방향 외측으로 돌출된 적어도 하나 이상의 고정돌기와;At least one fixing protrusion protruding radially outward from the piston fixing stopper toward the balance housing;

상기 고정돌기가 삽입되도록 상기 밸런스하우징에 형성된 고정홈;A fixing groove formed in the balance housing to insert the fixing protrusion;

으로 구성되도록 할 수도 있다.It can also be configured as.

본 발명은 이동풀리에 장착되어 밸런스유압실을 형성하는 밸런스하우징이, 비록 이동풀리에 다소간의 변형이 발생하여도, 구조적으로 상기 이동풀리에 대하여 상대회전이 발생하는 것이 방지되도록 함으로써, 밸런스하우징의 압입면 및 스냅링과의 접촉면에서 마찰 및 마모가 발생하지 않도록 하여 밸런스유압실의 밀폐상태를 보다 안정적으로 확보하여 원심유압 밸런스 기능을 신뢰성 있게 제공하도록 하며, 마찰 및 마모로 인한 칩의 발생이 방지되어 각종 유압제어밸브 등의 작동신뢰성을 향상시켜줄 수 있도록 한다.According to the present invention, a balance housing mounted to a moving pulley to form a balance hydraulic chamber is structurally prevented from generating relative rotation with respect to the moving pulley even if some deformation occurs in the moving pulley. By preventing friction and abrasion from the contact surface of the press-fitting surface and the snap ring, the sealed state of the balance hydraulic chamber is more stably secured to provide a centrifugal hydraulic balance function reliably, and the occurrence of chips due to friction and wear is prevented. It can improve the operation reliability of various hydraulic control valves.

도 2를 참조하면, 본 발명 실시예는 이동풀리(1)의 내경부에 외경부가 압입되어 밸런스유압실을 형성하는 밸런스하우징(3)과; 상기 이동풀리(1) 내부에 설치되는 유압피스톤(5)을 고정하는 피스톤고정스토퍼(7)와; 상기 밸런스하우징(3)의 내경부와 상기 피스톤고정스토퍼(7) 사이에 상호 대응하도록 반경방향으로 돌출 및 함몰되게 형성되어 상기 밸런스하우징(3)과 피스톤고정스토퍼(7)의 상대회전을 억제하도록 된 회전구속수단(9)을 포함하여 구성된다.2, an embodiment of the present invention includes a balance housing 3 in which an outer diameter portion is press-fitted into an inner diameter portion of a moving pulley 1 to form a balance hydraulic chamber; A piston fixing stopper (7) for fixing the hydraulic piston (5) installed in the moving pulley (1); The inner diameter portion of the balance housing 3 and the piston fixing stopper 7 are formed to protrude and recess in a radial direction so as to correspond to each other so as to suppress relative rotation of the balance housing 3 and the piston fixing stopper 7. It is configured to include a rotating restricting means (9).

본 실시예에서, 상기 회전구속수단(9)은 상기 밸런스하우징(3)에서 상기 피 스톤고정스토퍼(7)를 향하여 반경방향 내측으로 돌출된 적어도 하나 이상의 고정돌기(11)와, 상기 고정돌기(11)가 삽입되도록 상기 피스톤고정스토퍼(7)에 형성된 고정홈(13)으로 구성하였다.In the present embodiment, the rotational restricting means 9 is at least one fixing protrusion 11 protruding radially inward toward the piston fixing stopper 7 in the balance housing 3 and the fixing protrusion ( 11) was configured as a fixing groove 13 formed in the piston fixing stopper (7) to be inserted.

즉, 상기 고정돌기(11)를 상기 밸런스하우징(3)의 내경부에 원주 방향으로 일정한 간격을 두고 3개가 배치되도록 하고, 이에 상응하여 상기 고정돌기(11)가 삽입되도록 상기 고정홈(13)을 상기 피스톤고정스토퍼(7)에 3개 형성한 것이다.That is, three fixing protrusions 11 are arranged at an inner diameter portion of the balance housing 3 at regular intervals in the circumferential direction, and the fixing protrusions 13 are inserted to correspond to the fixing protrusions 11. Three are formed in the piston fixing stopper (7).

또한, 상기 회전구속수단(9)은 상기 피스톤고정스토퍼(7)에서 상기 밸런스하우징(3)을 향하여 반경방향 외측으로 돌출된 적어도 하나 이상의 고정돌기와, 상기 고정돌기가 삽입되도록 상기 밸런스하우징(3)에 형성된 고정홈으로 구성할 수도 있을 것이다.In addition, the rotational restricting means 9 is at least one fixed projection protruding radially outward from the piston fixing stopper 7 toward the balance housing 3, and the balance housing 3 so that the fixing projection is inserted. It may be configured as a fixing groove formed in.

또한, 상기 회전구속수단(9)으로 상기 밸런스하우징(3)의 내경부와 상기 피스톤고정스토퍼(7) 사이에 끼워지는 키이 등이 사용될 수도 있을 것이다.In addition, a key fitted between the inner diameter portion of the balance housing 3 and the piston fixing stopper 7 may be used as the rotation restraining means 9.

상기한 바와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.

상기 이동풀리(1)는 제공되는 유압에 의해 직선 왕복 슬라이딩 운동을 하면서 벨트가 감긴 동반경을 변화시킴으로써, 무단으로 변속이 이루어지도록 한다.The movable pulley 1 changes the companion diameter around which the belt is wound while performing a linear reciprocating sliding movement by the provided hydraulic pressure, so that the shifting is performed steplessly.

이때, 상기 이동풀리(1)는 작용되는 높은 유압과 벨트 접촉부의 반력에 의해 변형이 발생하여 상기 밸런스하우징(3)이 상기 이동풀리(1)에 압입된 압입력이 약화될 수 있다.At this time, the movable pulley 1 may be deformed due to the high hydraulic pressure acting on the reaction force of the belt contact portion, and thus the pressure input of the balance housing 3 pressed into the movable pulley 1 may be weakened.

그러나, 상기 밸런스하우징(3)은 상기 피스톤고정스토퍼(7)와 상기 고정돌기(11) 및 고정홈(13)에 의해 회전방향으로 상호 구속되어 있어서, 상기 이동풀리(1)와 상대적인 회전이 발생하지 않게 된다.However, the balance housing 3 is mutually restrained in the rotational direction by the piston fixing stopper 7, the fixing protrusion 11, and the fixing groove 13, so that rotation relative to the moving pulley 1 occurs. You will not.

특히, 상기와 같은 상대적인 회전은 상기 이동풀리(1)의 회전속도가 급격히 변화하는 경우에 발생될 수 있는데, 이러한 급격한 이동풀리(1)의 회전속도 변경에도 불구하고, 상기 밸런스하우징(3)은 상기 이동풀리(1)와 함께 일체로 회전하게 되는 상기 피스톤고정스토퍼(7)에 의해 항상 상기 이동풀리(1)와 동일한 속도로 구속되어 회전하게 되므로, 결과적으로 상기 이동풀리(1)와 상기 밸런스하우징(3) 사이에는 어떠한 경우에도 상대적인 회전이 발생하지 않게 된다.In particular, such relative rotation may occur when the rotational speed of the movable pulley 1 changes abruptly. In spite of the sudden change in the rotational speed of the movable pulley 1, the balance housing 3 Since the piston fixing stopper 7 which is integrally rotated together with the moving pulley 1 is always constrained and rotates at the same speed as the moving pulley 1, the moving pulley 1 and the balance are consequently rotated. In any case, no relative rotation occurs between the housings 3.

따라서, 일반적인 상태는 물론, 무단변속기의 사용시간이 오래 경과하여 각종 부품들이 노후화되는 상황에서도, 상기 밸런스하우징(3)과 상기 이동풀리(1) 사이에는 상대회전이 방지되어 마찰 및 마모가 방지되고, 상기 밸런스하우징(3)에 의해 형성되는 밸런스유압실의 원심유압 밸런스 기능을 안정되게 제공하게 된다.Therefore, even in a general state, even in a situation in which various parts are deteriorated due to a long use time of the continuously variable transmission, relative rotation is prevented between the balance housing 3 and the movable pulley 1 to prevent friction and wear. In addition, the centrifugal hydraulic balance function of the balance hydraulic chamber formed by the balance housing 3 is stably provided.

또한, 상기한 바와 같은 밸런스하우징(3)과 이동풀리(1) 사이의 마찰 및 마모방지는 종래에 이들의 마찰 및 마모에 의해 발생하던 다량의 칩 발생을 방지하게 되어, 유압제어용 밸브 등 무단변속기 유압회로를 구성하는 각종 부품들의 안정되고 내구성 있는 작동성 확보에 큰 도움을 줄 수 있게 된다.In addition, the friction and abrasion prevention between the balance housing 3 and the movable pulley 1 as described above prevents the generation of a large amount of chips conventionally caused by the friction and abrasion thereof, such as a continuously variable transmission such as a hydraulic control valve. Various components constituting the hydraulic circuit can be greatly helped to ensure stable and durable operability.

도 1은 종래 기술에 의한 벨트식 무단변속기의 구조를 설명한 도면,1 is a view for explaining the structure of a belt continuously variable transmission according to the prior art,

도 2는 본 발명에 따른 벨트식 무단변속기의 구조를 설명한 도면이다.2 is a view for explaining the structure of the belt-type continuously variable transmission according to the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 이동풀리 3; 밸런스하우징One; Moving pulley 3; Balance housing

5; 유압피스톤 7; 피스톤고정스토퍼5; Hydraulic piston 7; Piston Fixed Stopper

9; 회전구속수단 11; 고정돌기9; Rotary restraining means 11; Fixing protrusion

13; 고정홈 13; Fixing groove

Claims (3)

이동풀리의 내경부에 외경부가 압입되어 밸런스유압실을 형성하는 밸런스하우징과;A balance housing which press-fits an outer diameter part to an inner diameter part of the moving pulley to form a balance hydraulic chamber; 상기 이동풀리 내부에 설치되는 유압피스톤을 고정하는 피스톤고정스토퍼와;A piston fixing stopper for fixing a hydraulic piston installed inside the moving pulley; 상기 밸런스하우징의 내경부와 상기 피스톤고정스토퍼 사이에 상호 대응하도록 반경방향으로 돌출 및 함몰되게 형성되어 상기 밸런스하우징과 피스톤고정스토퍼의 상대회전을 억제하도록 된 회전구속수단;Rotational restraining means protruded and recessed in a radial direction so as to correspond to each other between the inner diameter portion of the balance housing and the piston fixing stopper to suppress relative rotation of the balance housing and the piston fixing stopper; 을 포함하여 구성된 것을 특징으로 하는 벨트식 무단변속기.Belt type continuously variable transmission, characterized in that configured to include. 청구항 1에 있어서, 상기 회전구속수단은The method of claim 1, wherein the rotational restriction means 상기 밸런스하우징에서 상기 피스톤고정스토퍼를 향하여 반경방향 내측으로 돌출된 적어도 하나 이상의 고정돌기와;At least one fixing protrusion protruding radially inward from the balance housing toward the piston fixing stopper; 상기 고정돌기가 삽입되도록 상기 피스톤고정스토퍼에 형성된 고정홈;A fixing groove formed in the piston fixing stopper to insert the fixing protrusion; 으로 구성된 것을 특징으로 하는 벨트식 무단변속기.Belt-type continuously variable transmission, characterized in that consisting of. 청구항 1에 있어서, 상기 회전구속수단은The method of claim 1, wherein the rotational restriction means 상기 피스톤고정스토퍼에서 상기 밸런스하우징을 향하여 반경방향 외측으로 돌출된 적어도 하나 이상의 고정돌기와;At least one fixing protrusion protruding radially outward from the piston fixing stopper toward the balance housing; 상기 고정돌기가 삽입되도록 상기 밸런스하우징에 형성된 고정홈;A fixing groove formed in the balance housing to insert the fixing protrusion; 으로 구성된 것을 특징으로 하는 벨트식 무단변속기.Belt-type continuously variable transmission, characterized in that consisting of.
KR1020080081264A 2008-08-20 2008-08-20 Belt Type Continuous Variable Transmission KR100962867B1 (en)

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KR1020080081264A KR100962867B1 (en) 2008-08-20 2008-08-20 Belt Type Continuous Variable Transmission

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KR100962867B1 true KR100962867B1 (en) 2010-06-09

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1172151A (en) 1998-07-03 1999-03-16 Fuji Heavy Ind Ltd Pulley device for belt type continuously variable transmission
JPH11166604A (en) 1997-12-04 1999-06-22 Fuji Heavy Ind Ltd Continuously variable transmission
KR100383110B1 (en) 1999-12-14 2003-05-12 미쯔비시 지도샤 고교 가부시끼가이샤 Belt-type continuously variable transmission

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11166604A (en) 1997-12-04 1999-06-22 Fuji Heavy Ind Ltd Continuously variable transmission
JPH1172151A (en) 1998-07-03 1999-03-16 Fuji Heavy Ind Ltd Pulley device for belt type continuously variable transmission
KR100383110B1 (en) 1999-12-14 2003-05-12 미쯔비시 지도샤 고교 가부시끼가이샤 Belt-type continuously variable transmission

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