KR20000019332A - Continuously variable transmission of belt type - Google Patents

Continuously variable transmission of belt type Download PDF

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Publication number
KR20000019332A
KR20000019332A KR1019980037366A KR19980037366A KR20000019332A KR 20000019332 A KR20000019332 A KR 20000019332A KR 1019980037366 A KR1019980037366 A KR 1019980037366A KR 19980037366 A KR19980037366 A KR 19980037366A KR 20000019332 A KR20000019332 A KR 20000019332A
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KR
South Korea
Prior art keywords
hydraulic
continuously variable
variable transmission
pulleys
fork
Prior art date
Application number
KR1019980037366A
Other languages
Korean (ko)
Inventor
김경하
Original Assignee
류정열
기아자동차 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 류정열, 기아자동차 주식회사 filed Critical 류정열
Priority to KR1019980037366A priority Critical patent/KR20000019332A/en
Publication of KR20000019332A publication Critical patent/KR20000019332A/en

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Classifications

    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0812—Fluid pressure
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0863—Finally actuated members, e.g. constructional details thereof
    • F16H2007/0865—Pulleys
    • F16H2007/0868—Pulleys comprising means for changing working diameter of pulley

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

PURPOSE: A continuously variable transmission is provided to use single hydraulic device for each hydraulic chamber for controlling a shift rate to simplify the structure of a system and to improve shifting performance. CONSTITUTION: A continuously variable transmission is composed of: a couple of pulleys(5) containing a side plate having changeable space in an input shaft(2) and an output shaft(3) of a driving force; a steel belt(6) for connecting the couple of pulleys; a fork(9) for adjusting the width of the pulleys; and a hydraulic device(10) for operating the fork. Herein, the hydraulic device is composed of a hydraulic valve(11) and a hydraulic cylinder(12) operated by receiving the oil from the hydraulic valve while forming a shaft(7) extended to a piston in the hydraulic cylinder. Therefore, the structure of the system is simplified by using single hydraulic device for each hydraulic chamber for controlling shift rate.

Description

벨트식 무단변속장치Belt-type continuously variable transmission

본 발명은 벨트식 무단변속장치에 관한 것으로, 특히 변속비 제어하기 위한 각각의 유압실을 하나의 유압장치를 이용함으로서, 시스템의 구조를 간소화시킴과 동시에, 변속 성능을 향상시키도록 한 벨트식 무단변속장치에 관한 것이다.The present invention relates to a belt type continuously variable transmission, and in particular, by using a single hydraulic device for each hydraulic chamber for speed ratio control, the belt type continuously variable speed simplifies the structure of the system and improves transmission performance. Relates to a device.

일반적으로, 벨트식 무단변속기 (CVT ; Continuously Variable Transmission)(1)는 자동변속기의 일종으로 도 1에 도시된 바와 같이 동력의 입력축(2)과 출력축(3)에 간격이 변하는 측판(4)을 지닌 풀리(5)를 부착하여 이것을 스틸벨트(6)나 체인으로 연결하도록 구성된다.In general, a continuously variable variable transmission (CVT) 1 is a type of automatic transmission, and as shown in FIG. 1, a side plate 4 having a space varying between an input shaft 2 and an output shaft 3 of a power is shown. And a pulley (5), which is configured to connect it with a steel belt (6) or a chain.

이때, 상기 측판(4)에 테이퍼를 부착하고 풀리(5)의 폭을 넓게하면 벨트(6)가 축(7) 중심으로 접근한다.At this time, if the taper is attached to the side plate 4 and the width of the pulley 5 is widened, the belt 6 approaches the center of the shaft 7.

또한, 기어의 지름을 작게하고 톱니수를 적게 한 것과 같은 효과를 얻을 수 있다는 원리를 이용하여 풀리(5)의 폭을 유압으로 조정시켜 변속을 한다.In addition, by shifting the width of the pulley (5) hydraulically by using the principle that the effect of reducing the diameter of the gear and the number of teeth can be obtained.

따라서, 엔진으로부터 전달된 동력이 클러치를 거쳐 전후진 장치에 적용되고, 이 동력은 풀리(5)를 거쳐 스틸벨트(6)를 거쳐 바퀴를 구동된다.Therefore, the power transmitted from the engine is applied to the apparatus forward and backward via the clutch, and this power is driven via the pulley 5 and the steel belt 6 to drive the wheels.

즉, 상기와 같이 풀리(5)를 움직이기 위해 CVT 내에 도 2에 도시된 바와 같이 유압실(8)을 각각의 풀리에 대하여 하나식 만들어 이곳에 유압을 공급하여 변속비를 제어한다.That is, in order to move the pulley 5 as described above, as shown in FIG. 2 in the hydraulic chamber 8 for each pulley to make a single type to supply the hydraulic pressure to control the speed ratio.

그러나, 상기와 같은 구성은 변속비 제어시 각각의 유압실(8)의 유량을 조절하여 풀리를 움직이기 때문에 제어하기가 힘들다는 문제점이 있었다.However, the configuration as described above has a problem that it is difficult to control because the pulley is moved by adjusting the flow rate of each hydraulic chamber (8) during the transmission ratio control.

따라서, 본 발명은 상기의 결점을 해소하기 위한 것으로, 종래 CVT의 변속비 제어하기 위한 각각의 유압실을 하나의 유압장치를 이용함으로서, 시스템의 구조를 간소화시킴과 동시에, 변속 성능을 향상시키는 데에 있다.Accordingly, the present invention is to solve the above-mentioned shortcomings. By using one hydraulic device for each hydraulic chamber for controlling the transmission ratio of the conventional CVT, it is possible to simplify the structure of the system and to improve the shifting performance. have.

상기와 같은 목적을 달성하기 위하여 본 발명은 벨트식 무단변속기에 있어서, 동력의 입력축과 출력축에 간격이 변하는 측판을 지닌 한쌍의 풀리와; 이 한쌍의 풀리를 연결하기 위한 스틸벨트와; 상기 풀리의 폭을 조절하기 위한 포크와; 이 포크를 작동시키기 위한 유압장치로 됨을 특징으로 한다.In order to achieve the above object, the present invention provides a belt type continuously variable transmission comprising: a pair of pulleys having a side plate having a gap between the power input shaft and the output shaft; A steel belt for connecting the pair of pulleys; A fork for adjusting the width of the pulley; It is characterized in that the hydraulic device for operating the fork.

도 1은 종래 벨트식 무단변속장치의 단면도,1 is a cross-sectional view of a conventional belt continuously variable transmission,

도 2는 종래 벨트식 무단변속장치를 간략하게 나타낸 도,Figure 2 is a simplified view of a conventional belt continuously variable transmission,

도 3는 본 발명 벨트식 무단변속장치를 간략하게 나타낸 도.Figure 3 is a simplified view of the present invention belt type continuously variable transmission.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

1 : 무단변속장치 2 : 입력축1: continuously variable transmission 2: input shaft

3 : 출력축 5,5' : 풀리3: output shaft 5,5 ': pulley

6 : 스틸벨트 7 : 축6: steel belt 7: shaft

9 : 포크 10 : 유압장치9: fork 10: hydraulic device

11 : 유압밸브 12 : 유압 실린더11: hydraulic valve 12: hydraulic cylinder

13 : 축13: axis

본 발명의 실시예를 첨부 도면에 의하여 상세히 설명 하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

먼저, 종래와 동일한 형상 및 명칭에는 동일 부호를 붙인다.First, the same code | symbol is attached | subjected to the same shape and name as before.

도 3는 본 발명 벨트식 무단변속장치를 간략하게 나타낸 도이다.Figure 3 is a simplified view of the belt-type continuously variable transmission of the present invention.

본 발명은 도 2에 도시된 바와 같이 벨트식 무단변속기(1)로, 동력의 입력축(2)과 출력축(3)에 간격이 변하는 측판을 지닌 한쌍의 풀리(5)와; 이 한쌍의 풀리(5)를 연결하기 위한 스틸벨트(6)와; 상기 풀리(5)의 폭을 조절하기 위한 포크(9)와; 이 포크(9)를 작동시키기 위한 유압장치(10)로 됨에 그 기술적 구성상의 특징이 부여된다.The present invention is a belt type continuously variable transmission (1) as shown in Figure 2, a pair of pulleys (5) having a side plate in which the distance between the power input shaft (2) and output shaft (3); A steel belt 6 for connecting the pair of pulleys 5; A fork (9) for adjusting the width of the pulley (5); The hydraulic configuration 10 for operating this fork 9 is endowed with its technical construction features.

상기 유압장치(10)는 유압밸브(11)와 이 유압밸브(11)로 부터 오일을 공급받아 작동되는 유압 실린더(12)로 구성되며, 상기 유압실린더(12) 내의 피스톤(13)에 축(7)이 연장형성된다.The hydraulic device 10 is composed of a hydraulic valve (11) and a hydraulic cylinder (12) operated by receiving oil from the hydraulic valve (11), the shaft (13) in the piston (13) in the hydraulic cylinder (12) 7) is extended.

따라서, 상기와 같이 구성되는 벨트식 무단변속장치는 엔진으로부터 발생된 동력이 클러치를 거쳐 유압밸브(11), 유압 실린더(10)로 전달되고 이 유압 실린더의 전,후진에 의해 축(7)의 움직임에 따라 포크(9)가 움직임으로서 풀리(5), 스틸벨트(6)를 통해 다른 풀리(5')를 거쳐 바퀴를 구동한다.Therefore, in the belt type continuously variable transmission configured as described above, the power generated from the engine is transmitted to the hydraulic valve 11 and the hydraulic cylinder 10 via the clutch, and the shaft 7 is moved forward and backward by the hydraulic cylinder. As the fork 9 moves, the fork 9 drives the wheel via another pulley 5 'through the pulley 5 and the steel belt 6.

이상과 같이 본 발명은 변속비 제어하기 위한 각각의 유압실을 하나의 유압장치를 이용함으로서, 시스템의 구조를 간소화시킴과 동시에, 변속 성능을 향상시킬 수가 있다.As described above, according to the present invention, by using one hydraulic device for each hydraulic chamber for shift ratio control, the structure of the system can be simplified and the shifting performance can be improved.

Claims (1)

벨트식 무단변속기에 있어서, 동력의 입력축과 출력축에 간격이 변하는 측판을 지닌 한쌍의 풀리와; 이 한쌍의 풀리를 연결하기 위한 스틸벨트와; 상기 풀리의 폭을 조절하기 위한 포크와; 이 포크를 작동시키기 위한 유압장치로 됨을 특징으로 하는 벨트식 무단변속장치.11. A belt type continuously variable transmission comprising: a pair of pulleys having side plates which vary in spacing between an input shaft and an output shaft of power; A steel belt for connecting the pair of pulleys; A fork for adjusting the width of the pulley; Beltless continuously variable transmission, characterized by a hydraulic system for operating this fork.
KR1019980037366A 1998-09-10 1998-09-10 Continuously variable transmission of belt type KR20000019332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980037366A KR20000019332A (en) 1998-09-10 1998-09-10 Continuously variable transmission of belt type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980037366A KR20000019332A (en) 1998-09-10 1998-09-10 Continuously variable transmission of belt type

Publications (1)

Publication Number Publication Date
KR20000019332A true KR20000019332A (en) 2000-04-06

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KR1019980037366A KR20000019332A (en) 1998-09-10 1998-09-10 Continuously variable transmission of belt type

Country Status (1)

Country Link
KR (1) KR20000019332A (en)

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