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KR100279979B1 - CVT lubrication structure - Google Patents

CVT lubrication structure Download PDF

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KR100279979B1
KR100279979B1 KR1019970063757A KR19970063757A KR100279979B1 KR 100279979 B1 KR100279979 B1 KR 100279979B1 KR 1019970063757 A KR1019970063757 A KR 1019970063757A KR 19970063757 A KR19970063757 A KR 19970063757A KR 100279979 B1 KR100279979 B1 KR 100279979B1
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oil
oil passage
variable transmission
continuously variable
planetary gear
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KR19990042836A (en
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서태석
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정몽규
현대자동차주식회사
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Abstract

본 발명의 목적은 소형 경량화를 실현하면서 각부분에 개재되는 니이들 베어링을 원활하게 윤활시킬 수 있는 무단변속기 윤활구조를 제공하는 데 있다.It is an object of the present invention to provide a continuously variable transmission lubrication structure capable of smoothly lubricating needle bearings interposed in each part while realizing compact and lightweight.

본 발명에 따른 무단변속기 윤활구조는 풀리의 직경을 제어하는 오일을 공급하도록 유성기어가 구비된 샤프트의 내측에 중공의 제1오일 통로를 형성하고,The continuously variable transmission lubrication structure according to the present invention forms a hollow first oil passage in the inner side of the shaft provided with the planetary gear to supply oil for controlling the diameter of the pulley,

이 제1오일 통로와는 별도로 오일을 공급할 수 있도록 상기 샤프트의 외측에 위치하는 부재에 제2오일 통로를 형성하며,A second oil passage is formed in the member located outside of the shaft to supply oil separately from the first oil passage,

이 제2오일 통로로 공급되는 오일을 각 니이들 베어링으로 공급할 수 있도록 유성기어의 선기어측에 제3오일 통로를 형성하여 구성된다.The third oil passage is formed on the sun gear side of the planetary gear so that the oil supplied to the second oil passage can be supplied to each needle bearing.

Description

무단변속기 윤활구조CVT lubrication structure

본 발명은 무단변속기에 관한 것으로서, 보다 상세하게는 소형 경량화를 실현하는 무단변속기의 니이들 베어링을 윤활하는 무단변속기 윤활구조에 관한 것이다.The present invention relates to a continuously variable transmission, and more particularly, to a continuously variable transmission lubricating structure for lubricating a needle bearing of a continuously variable transmission.

일반적으로 엔진에서 출력된 동력을 무단으로 변속시켜 구동륜으로 전달하기 위하여 엔진과 구동륜사이에 무단변속기가 장착 사용된다.In general, a continuously variable transmission is used between the engine and the driving wheels in order to continuously transmit power output from the engine to the driving wheels.

이러한 무단변속기는 풀리 타입의 무단 변속기구를 많이 적용하는 데, 이 풀리 타입의 무단 변속기는 풀리의 직경을 제어하는 유압을 풀리의 반대측에서 공급하도록 유로가 형성되어 있다.The continuously variable transmission employs a plurality of pulley type continuously variable transmission mechanisms, and the pulley type continuously variable transmission has a flow path configured to supply hydraulic pressure for controlling the diameter of the pulley from the opposite side of the pulley.

따라서 도 2에 도시된 바와 같이, 풀리를 제어하는 유압이 오일홀(49)로 공급되면서, 샤프트(51)에 형성된 오일홀(53,55)을 통하여 각 부분에 개재된 니이들 베어링(57,59) 등으로 공급되어 이들을 윤활시키도록 무단변속기가 구성된다.Therefore, as shown in FIG. 2, while the hydraulic pressure controlling the pulley is supplied to the oil hole 49, the needle bearing 57 interposed in each part through the oil holes 53 and 55 formed in the shaft 51. 59) and the continuously variable transmission is configured to lubricate them.

이러한 무단변속기는 풀리를 제어하는 오일이 각 부분을 경유하여 공급되기 때문에 니이들 베어링을 원활하게 윤활시키는 데, 소형 경량화를 위한 무단 변속기는 풀리를 제어하는 오일이 유성기어가 구비되는 샤프트내에 형성된 유로로 공급되기 때문에 니이들 베어링부에 대한 별도의 윤활구조를 요구하는 문제점이 있다.The continuously variable transmission smoothly lubricates the needle bearing because the oil controlling the pulley is supplied via each part. The continuously variable transmission for small size and light weight has a flow path formed in the shaft in which the oil controlling the pulley is provided with the planetary gear. There is a problem that requires a separate lubrication structure for the needle bearing part because it is supplied to.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 소형 경량화를 실현하면서 각부분에 개재되는 니이들 베어링을 원활하게 윤활시킬 수 있는 무단변속기 윤활구조를 제공하는 데 있다.Therefore, the present invention was invented to solve the above problems, and an object of the present invention is to provide a continuously variable transmission lubrication structure capable of smoothly lubricating the needle bearings interposed in each part while realizing small size and light weight. .

도 1은 본 발명에 관련하는 무단변속기 윤활구조가 적용되는 무단변속기의 부분 단면도이다.1 is a partial cross-sectional view of a continuously variable transmission to which the continuously variable transmission lubricating structure according to the present invention is applied.

도 2는 종래기술에 관련하는 무단변속기 윤활구조가 적용되는 무단변속기의 부분 단면도이다.2 is a partial cross-sectional view of a continuously variable transmission to which the continuously variable transmission lubricating structure according to the related art is applied.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:유성기어 3:샤프트 5,13,15:제1,2,3오일 통로 9,11:니이들 베어링1: Planetary gear 3: Shaft 5, 13, 15: 1st, 2, 3 Oil passage 9, 11: Needle bearing

상기한 과제를 실현하기 위하여 본 발명에 따른 무단변속기 윤활구조는 풀리의 직경을 제어하는 오일을 공급하도록 유성기어가 구비된 샤프트의 내측에 중공의 제1오일 통로를 형성하고,In order to realize the above object, the continuously variable transmission lubrication structure according to the present invention forms a hollow first oil passage in the inner side of a shaft having a planetary gear to supply oil for controlling the diameter of the pulley,

이 제1오일 통로와는 별도로 오일을 공급할 수 있도록 상기 샤프트의 외측에 위치하는 부재에 제2오일 통로를 형성하며,A second oil passage is formed in the member located outside of the shaft to supply oil separately from the first oil passage,

이 제2오일 통로로 공급되는 오일을 각 니이들 베어링으로 공급할 수 있도록 유성기어의 선기어측에 제3오일 통로를 형성함을 특징으로 한다.A third oil passage is formed on the sun gear side of the planetary gear so that the oil supplied to the second oil passage can be supplied to each needle bearing.

이하, 첨부된 도면을 참조하여 본 발명의 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 관련하는 무단변속기 윤활구조가 적용되는 무단변속기의 부분 단면도로서, 유성기어(1)가 구비된 샤프트(3)에 형성된 중공의 제1오일 통로(5)를 통하여 풀리(미도시)의 직경을 제어하는 오일을 공급할 수 있도록 구성된다.1 is a partial cross-sectional view of a continuously variable transmission to which the continuously variable transmission lubrication structure according to the present invention is applied and is pulled (not shown) through a hollow first oil passage 5 formed in a shaft 3 having a planetary gear 1. It is configured to supply oil to control the diameter of si).

상기 제1오일 통로(5)와는 별도로 유성기어(1)와 이의 측방에 제공되는 부재(7) 등의 사이에 개재된 니이들 베어링(9,11)이 원활하게 작동될 수 있도록 오일을 공급하는 제2,3오일 통로(13,15)가 상기 부재(7)와 샤프트(3)에 각각 형성되어 있다.Apart from the first oil passage (5) to supply oil so that the needle bearings (9, 11) interposed between the planetary gear (1) and the member (7) provided on the side thereof can be operated smoothly. Second and third oil passages 13 and 15 are formed in the member 7 and the shaft 3, respectively.

그리고 제3오일 통로(15)는 제2오일 통로(13)로 공급되는 오일을 각 니이들 베어링(9,11)으로 공급할 수 있도록 유성기어(1)의 선기어(17)측에 형성된다.The third oil passage 15 is formed on the sun gear 17 side of the planetary gear 1 to supply oil supplied to the second oil passage 13 to the needle bearings 9 and 11.

한편 제2오일 통로(13)는 유성기어(1)가 구비된 샤프트(3)의 회전에 따른 원심력을 이용하여 오일 공급을 더욱 원활케 하도록 경사지게 형성된다.On the other hand, the second oil passage 13 is formed to be inclined to smooth the oil supply by using the centrifugal force according to the rotation of the shaft 3 provided with the planetary gear 1.

또 제3오일 통로(15)는 선기어(17)의 일측을 지지하는 니이들 베어링(11)으로 오일을 공급하도록 제2오일 통로(13)측에서 상기 니이들 베어링(11)측으로 경사지게 형성된다. 이 제3오일 통로(15)가 경사지게 형성된 것도 제2오일 통로(13)와 같이 선기어(17)의 회전에 따른 원심력을 오일 공급의 한 작용력으로 사용할 수 있게 하기 위함이다.In addition, the third oil passage 15 is formed to be inclined from the second oil passage 13 side to the needle bearing 11 side to supply oil to the needle bearing 11 supporting one side of the sun gear 17. The third oil passage 15 is formed to be inclined so that the centrifugal force according to the rotation of the sun gear 17 can be used as an action force of oil supply like the second oil passage 13.

상술한 바와 같이 구성되는 무단변속기 윤활구조가 구비된 무단변속기는 상기 샤프트(3)에 형성된 제1오일 통로(5)로 공급되는 오일로 풀리의 직경을 제어한다.The continuously variable transmission with the continuously variable transmission lubrication structure configured as described above controls the diameter of the pulley with oil supplied to the first oil passage 5 formed in the shaft 3.

그리고 상기 제1오일 통로(5)와 별도로 형성된 제2오일 통로(13)를 통하여 유성기어(1)부와 그 주위에 개재된 니이들 베어링(9,11)등으로 오일을 공급한다.The oil is supplied to the planetary gear 1 and the needle bearings 9 and 11 interposed therebetween through the second oil passage 13 formed separately from the first oil passage 5.

즉, 제2오일 통로(13)로 공급되는 오일은 부재(7)측에 개재된 니이들 베어링(9)에 공급되어 윤활작용을 함과 동시에 제3오일 통로(15)로 공급된다.That is, the oil supplied to the second oil passage 13 is supplied to the needle bearing 9 interposed on the member 7 side, lubricated and at the same time supplied to the third oil passage 15.

이 제3오일 통로(15)로 공급되는 오일은 선기어(17)의 일측에 개재된 니이들 베어링(11)으로 공급되어 윤활작용을 한다.The oil supplied to the third oil passage 15 is supplied to the needle bearing 11 interposed on one side of the sun gear 17 to lubricate.

이 때 제2,3오일 통로(13,15)로 공급되는 오일은 경사진 통로(13,15)를 경유하기 때문에 샤프트(3)의 원심력에 의하여 더욱 원활하게 공급된다.At this time, since the oil supplied to the second and third oil passages 13 and 15 passes through the inclined passages 13 and 15, the oil is more smoothly supplied by the centrifugal force of the shaft 3.

따라서 본 발명의 무단변속기 윤활구조는 소형 경량하에 따른 니이들 베어링(9,11)부의 윤활 부족 현상을 저감시킨다.Therefore, the continuously variable transmission lubrication structure of the present invention reduces the lack of lubrication of the needle bearings 9 and 11 in accordance with the small size and light weight.

상술한 바와 같이 구성된 무단변속기 윤활구조는 소형 경량화를 실현하면서, 제1오일 통로와는 별도로 유성기어가 구비된 샤프트의 외측 부재와 상기 샤프트에 각각 형성된 제2,3오일 통로를 통하여 각 니이들 베어링에 오일을 공급하므로 이 부분에 대한 윤활성을 향상시킬 수 있다.The continuously variable transmission lubrication structure configured as described above realizes small size and light weight, and each needle bearing is formed through the outer member of the shaft having the planetary gear separate from the first oil passage and the second and third oil passages respectively formed on the shaft. Oil can be supplied to improve the lubricity of this area.

Claims (3)

풀리의 직경을 제어하는 오일을 공급하도록 유성기어가 구비된 샤프트의 내측에 중공의 제1오일 통로를 형성하고,A hollow first oil passage is formed inside the shaft provided with the planetary gear to supply oil for controlling the diameter of the pulley, 상기 제1오일 통로와는 별도로 오일을 공급할 수 있도록 상기 샤프트의 외측에 위치하는 부재에 제2오일 통로를 형성하며,A second oil passage is formed in a member located outside the shaft to supply oil separately from the first oil passage, 상기 제2오일 통로로 공급되는 오일을 각 니이들 베어링으로 공급할 수 있도록 유성기어의 선기어측에 제3오일 통로를 형성함을 특징으로 하는 무단변속기 윤활구조.And a third oil passage formed on the sun gear side of the planetary gear to supply oil supplied to the second oil passage to each needle bearing. 청구항 1에 있어서, 제2오일 통로는 유성기어가 구비된 샤프트의 회전에 따른 원심력을 이용하여 오일 공급을 원활케 하도록 경사지게 형성됨을 특징으로 하는 무단변속기 윤활구조.The continuously variable transmission lubrication structure according to claim 1, wherein the second oil passage is formed to be inclined to facilitate the oil supply by using the centrifugal force according to the rotation of the shaft provided with the planetary gear. 청구항 1에 있어서, 제3오일 통로는 선기어의 일측을 지지하는 니이들 베어링으로 오일을 공급하도록 제2오일 통로측에서 상기 니이들 베어링측으로 경사게 형성됨을 특징으로 하는 무단변속기 윤활구조.The continuously variable transmission lubrication structure according to claim 1, wherein the third oil passage is inclined from the second oil passage side to the needle bearing side to supply oil to the needle bearing supporting one side of the sun gear.
KR1019970063757A 1997-11-28 1997-11-28 CVT lubrication structure Expired - Fee Related KR100279979B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222847A1 (en) * 2013-11-11 2015-05-13 Zf Friedrichshafen Ag Planet carrier with integrated lubricant supply

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101043176B1 (en) * 2009-11-26 2011-06-20 두산중공업 주식회사 Bearing oil supply device of gas turbine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222847A1 (en) * 2013-11-11 2015-05-13 Zf Friedrichshafen Ag Planet carrier with integrated lubricant supply

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