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KR20020049092A - Tappet structure for rubbing reduction - Google Patents

Tappet structure for rubbing reduction Download PDF

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Publication number
KR20020049092A
KR20020049092A KR1020000078175A KR20000078175A KR20020049092A KR 20020049092 A KR20020049092 A KR 20020049092A KR 1020000078175 A KR1020000078175 A KR 1020000078175A KR 20000078175 A KR20000078175 A KR 20000078175A KR 20020049092 A KR20020049092 A KR 20020049092A
Authority
KR
South Korea
Prior art keywords
tappet
outer diameter
present
guide
external diameter
Prior art date
Application number
KR1020000078175A
Other languages
Korean (ko)
Inventor
이종섭
Original Assignee
이계안
현대자동차주식회사
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.)
Filing date
Publication date
Application filed by 이계안, 현대자동차주식회사 filed Critical 이계안
Priority to KR1020000078175A priority Critical patent/KR20020049092A/en
Publication of KR20020049092A publication Critical patent/KR20020049092A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/14Tappets; Push rods
    • F01L1/143Tappets; Push rods for use with overhead camshafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/14Tappets; Push rods
    • F01L1/16Silencing impact; Reducing wear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE: A structure of a tappet is provided to reduce frictional resistance to a tappet guide by maximizing an external diameter of the upper part of the tappet and minimizing an external diameter of the lower part of the tappet inserted into the tappet guide. CONSTITUTION: In a cylindrical tappet(1), an external diameter of the upper part(11) of the tappet(1) is large. An external diameter of the lower part(12) of the tappet(1) is smaller than the external diameter of the upper part(11), and the periphery of the tappet(1) has the structure of two-step.

Description

마찰 저감을 위한 태핏구조{Tappet structure for rubbing reduction}Tappet structure for rubbing reduction

본 발명은 엔진에 있어서의 마찰 저감을 위한 태핏구조에 관한 것이다.The present invention relates to a tappet structure for reducing friction in an engine.

엔진 밸브 트래인(VALVE TRAIN)의 태핏(TAPPET)은 실린더 블럭 구조는 박스형 태핏에 심(SHIM) 적용형과 심(SHIM)을 삭제한 심레스(SHIMLESS) 타입이 적용되고 있으며, 상기 태핏(TAPPET)은 엔진의 흡기밸브와 배기밸브 각각의 스템 상단에설치되어 캠 샤프트에 설치된 캠의 회전작동을 흡기밸브 및 배기밸브에 전달하도록 구성되어 있다.The tappet of the valve valve of the engine valve train has a cylinder block structure in which a shim application type and a shimess type in which a shim is removed are applied to a box type tappet, and the tappet ) Is installed on the top of each stem of the engine intake valve and exhaust valve, and is configured to transmit the rotational operation of the cam installed on the cam shaft to the intake valve and the exhaust valve.

종래 기술의 태핏은 도 3의 (B)에 도시된 바와 같이 태핏(100)이 상부는 평탄한면으로 폐쇄되고 하부는 개방되어 있는 구조를 가지고 있으며, 또한 종래의 태핏(100)의 외주면은 상단부(101)의 외경과 하단부(102)의 외경이 동일한 반경을 가지는 원통형으로 구성되어 있다.The tappet of the prior art has a structure in which the tappet 100 is closed with a flat surface and the bottom thereof is open as shown in FIG. 3B, and the outer circumferential surface of the conventional tappet 100 has an upper portion ( The outer diameter of 101 and the outer diameter of the lower end 102 are formed in a cylindrical shape having the same radius.

그러나 상기와 같은 구조로 된 종래의 태핏(100)은 캠(200)과 접촉되는 상단부(101)의 평면 단면적을 극대화시킬 수 없을 뿐 아니라 태핏 가이드(300)에 접촉되는 하단부(102)의 외경 단면적을 축소시킬 수 없어 태핏 가이드(300)와의 마찰저항이 커지게 되며, 이러한 태핏(100)의 마찰저항은 엔진성능에도 영향을 미치게 된다는 것이 단점으로 지적되고 있다.However, the conventional tappet 100 having the above structure cannot maximize the planar cross-sectional area of the upper end 101 in contact with the cam 200, as well as the outer diameter cross-sectional area of the lower end 102 in contact with the tappet guide 300. Since the frictional resistance with the tappet guide 300 can not be reduced, the frictional resistance of the tappet 100 also affects the engine performance.

본 발명은 상기와 같은 종래 기술의 단점을 해결하기 위하여 구조개선한 것으로, 태핏의 상단부의 외경 단면적은 극대화시킬 수 있도록 함과 동시 태핏 가이드에 삽입되는 하단부의 외경 단면적은 최소화시킬 수 있도록 하므로서 태핏 가이드와의 마찰저항을 저감시킬 수 있도록 하는데 목적을 두고 발명한 것이다.The present invention has been improved in order to solve the disadvantages of the prior art as described above, so as to maximize the outer diameter cross-sectional area of the upper end of the tappet and to minimize the outer diameter cross-sectional area of the lower end inserted into the tappet guide at the same time Invented for the purpose of reducing the frictional resistance of and.

본 발명은 상기 와 같은 목적을 달성하기 위한 수단으로서,The present invention as a means for achieving the above object,

원통형으로 된 태핏에 있어서,In the cylindrical tappet,

상기 태핏의 상단부의 외경은 크고, 하단부의 외경은 상기 상단부의 외경보다 작게 형성하여 태핏의 외주면이 2단으로 단층진 형상의 구조를 가지도록 한 것을 특징으로 하는 것이다.The outer diameter of the upper end of the tappet is large, the outer diameter of the lower end is formed smaller than the outer diameter of the upper end is characterized in that the outer circumferential surface of the tappet has a two-layered structure.

도 1은 본 발명을 설명하기 위한 태핏의 설치상태도.1 is an installation state of the tappet for explaining the present invention.

도 2는 본 발명의 요부인 태핏의 단면도.2 is a cross-sectional view of a tappet which is a main portion of the present invention.

도 3의 (A)(B)는 본 발명의 태핏과 종래 기술의 태핏 비교도.Figure 3 (A) (B) is a tappet comparison of the present invention and the tappet of the prior art.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

1 : 태핏 11 : 상단부1: tappet 11: top

12 : 하단부 2 : 엔진블럭12: lower part 2: engine block

3 : 연소실 4a : 흡기밸브3: combustion chamber 4a: intake valve

4b : 배기밸브 5 : 태핏 가이드4b: exhaust valve 5: tappet guide

6 : 캠6: cam

본 발명의 실시예를 첨부한 도면에 따라서 상세히 설명하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명을 설명하기 위한 태핏의 설치상태도이며, 도 2는 본 발명의 요부인 태핏의 구조도이고, 도 3의 (A)(B)는 본 발명의 태핏과 종래 기술의 태핏 비교도를 도시한 것으로,1 is an installation state of a tappet for explaining the present invention, Figure 2 is a structural diagram of a tappet which is the main part of the present invention, Figure 3 (A) (B) is a tappet comparison of the present invention and the prior art tappet diagram As shown,

도면부호 1은 태핏을 나타내는 것으로, 상기 태핏(1)은 엔진블럭(2)의 연소실(3) 상단에 설치되는 흡기밸브(4a)와 배기밸브(4b) 각각의 스템 상단에 탄력설치되며, 또한 태핏(1)은 패핏 가이드(5)에 삽입 설치된 상태에서 캠(6)의 회전작동에 따라 상,하로 승강작동하도록 구성되어 있다.Reference numeral 1 denotes a tappet, and the tappet 1 is elastically installed on the top of each stem of each of the intake valve 4a and the exhaust valve 4b installed at the upper end of the combustion chamber 3 of the engine block 2. The tappet 1 is configured to move up and down in accordance with the rotation operation of the cam 6 in a state of being inserted into the poppet guide 5.

상기 태핏(1)은 캠(6)과 접촉하는 상단부(11)는 폐구된 구조를 가지고 있으며, 하단부(12)는 개구되어 흡기 및 배기밸브(4a)(4b) 각각의 스템 상단과 스프링(7)의 상단이 상단부(11)의 저부에 지지되게 하는 구조로서 전체적으로는 원통형의 구조로 구성되어 있다.The tappet 1 has a closed structure in which the upper end 11 in contact with the cam 6 is closed, and the lower end 12 is opened to open the stem top and the spring 7 of each of the intake and exhaust valves 4a and 4b. The upper end of the c) is supported by the bottom of the upper end 11, and has a cylindrical structure as a whole.

본 발명의 특징은 상기 태핏(1)의 상단부(11) 외경은 크고, 하단부(12)의 외경은 작게 형성한 것에 있다.The feature of the present invention is that the outer diameter of the upper end portion 11 of the tappet 1 is large, and the outer diameter of the lower end portion 12 is small.

상기 태핏(1)의 상단부(11)는 캠(6)의 회전작동에 의하여 승강작동될 때 태핏 가이드(5)의 상단에 걸리지 않도록 얇은 두께를 가지도록 구성하여 태핏(1)의 외주면이 2단으로 단층진 구조를 가지게 된다.The upper end portion 11 of the tappet 1 is configured to have a thin thickness so as not to be caught on the top of the tappet guide 5 when the lifting operation is performed by the rotation operation of the cam 6 so that the outer circumferential surface of the tappet 1 has two stages. It has a monolayer structure.

또한 태핏(1)의 상단부(11)의 반경(R)은 종래 태핏(100)의 상,하단부의반경(R)과 같거나 또는 크게 구성할 수 있으며, 하단부(12)의 반경(R1)은 상단부(11)의 반경(R)보다 작게 구성된다.In addition, the radius R of the upper end 11 of the tappet 1 may be configured to be the same as or larger than the radius R of the upper and lower ends of the conventional tappet 100, and the radius R 1 of the lower end 12. Is smaller than the radius R of the upper end 11.

이와 같이 구성된 본 발명의 작용을 설명한다.The operation of the present invention configured as described above will be described.

태핏(1)의 상단부(11)는 캠(6)의 회전운동을 전달받을 수 있는 충분한 평면 단면적 즉, 적어도 종래 태핏의 상단부와 같거나 또는 큰 반경(R)을 가지고 있는 반면에, 하단부(12)는 종래 태핏의 하단부보다 적은 반경(R1)을 가지고 있으므로 상기 태핏(1)의 하단부(12) 외주면과 태핏 가이드(5)의 내주면의 접촉 단면적이 종래에 비하여 훨씬 작아져 마찰저항이 작아진 상태가 되며, 이와 같이 태핏91)과 태핏 가이드(5)와의 마찰저항이 작아지게 되며, 또한 태핏(1)의 하단부(12)의 반경(R1)을 축소시킨 만큼 경량화되어 엔진의 마찰 저감을 기대할 수 있는 것이다.The upper end 11 of the tappet 1 has a sufficient planar cross-sectional area, ie at least equal to or greater than the upper end of a conventional tappet, that is capable of receiving the rotational movement of the cam 6, while the lower end 12 ) Has a smaller radius (R 1 ) than the lower end of the conventional tappet, the contact cross-sectional area of the outer peripheral surface of the lower end 12 of the tappet (1) and the inner peripheral surface of the tappet guide (5) is much smaller than the conventional, the frictional resistance is smaller In this way, the frictional resistance between the tappet 91 and the tappet guide 5 is reduced, and the weight is reduced by reducing the radius R 1 of the lower end 12 of the tappet 1 to reduce the friction of the engine. You can expect it.

상기와 같은 본 발명은 태핏의 구조를 상단부의 외경은 넓고 하단부의 외경은 작게 형성하여 2단으로 단층진 구조로 개선하는 수단으로 태핏의 마찰저항을 줄일 수 있을 뿐 아니라 경량화시킬 수 있으며, 또한 태핏의 하단부 외경을 최소화시킬 수 있는 한편 상단부는 극대화시킬 수 있으므로 엔진의 성능개선에 이바지하는 효과를 제공할 수 있는 것이다.The present invention as described above can reduce the frictional resistance of the tappet as well as reduce the tappet as a means of improving the structure of the tappet by forming the outer diameter of the upper end and the outer diameter of the lower part in a two-layered monolayer structure. The outer diameter of the lower part can be minimized while the upper part can be maximized, which can contribute to improving the performance of the engine.

Claims (1)

원통형으로 된 태핏에 있어서,In the cylindrical tappet, 상기 태핏의 상단부의 외경은 크고, 하단부의 외경은 상기 상단부의 외경보다 작게 형성하여 태핏의 외주면이 2단으로 단층진 형상의 구조를 가지도록 한 것을 특징으로 하는 마찰 저감을 위한 태핏 구조.The outer diameter of the upper end of the tappet is large, the outer diameter of the lower end is formed smaller than the outer diameter of the upper end tappet structure for reducing friction, characterized in that the outer circumferential surface of the tappet has a two-layered structure.
KR1020000078175A 2000-12-19 2000-12-19 Tappet structure for rubbing reduction KR20020049092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000078175A KR20020049092A (en) 2000-12-19 2000-12-19 Tappet structure for rubbing reduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020000078175A KR20020049092A (en) 2000-12-19 2000-12-19 Tappet structure for rubbing reduction

Publications (1)

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KR20020049092A true KR20020049092A (en) 2002-06-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245308U (en) * 1985-09-06 1987-03-19
JPH04103809A (en) * 1990-08-24 1992-04-06 Ngk Spark Plug Co Ltd Manufacture for tappet
KR19980030537A (en) * 1996-10-30 1998-07-25 이해규 Valve train system for engine
KR19980050628A (en) * 1996-12-21 1998-09-15 김영석 PUSH RODAD and TAPPET fastening devices for diesel engines for heavy vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6245308U (en) * 1985-09-06 1987-03-19
JPH04103809A (en) * 1990-08-24 1992-04-06 Ngk Spark Plug Co Ltd Manufacture for tappet
KR19980030537A (en) * 1996-10-30 1998-07-25 이해규 Valve train system for engine
KR19980050628A (en) * 1996-12-21 1998-09-15 김영석 PUSH RODAD and TAPPET fastening devices for diesel engines for heavy vehicles

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