KR960008828Y1 - Roller type cam follower - Google Patents

Roller type cam follower Download PDF

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Publication number
KR960008828Y1
KR960008828Y1 KR2019940025462U KR19940025462U KR960008828Y1 KR 960008828 Y1 KR960008828 Y1 KR 960008828Y1 KR 2019940025462 U KR2019940025462 U KR 2019940025462U KR 19940025462 U KR19940025462 U KR 19940025462U KR 960008828 Y1 KR960008828 Y1 KR 960008828Y1
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KR
South Korea
Prior art keywords
cam
cam follower
roller
rod
rocker arm
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Application number
KR2019940025462U
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Korean (ko)
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KR960011419U (en
Inventor
오재욱
Original Assignee
대우자동차 주식회사
김태구
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Priority to KR2019940025462U priority Critical patent/KR960008828Y1/en
Publication of KR960011419U publication Critical patent/KR960011419U/en
Application granted granted Critical
Publication of KR960008828Y1 publication Critical patent/KR960008828Y1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers

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

Abstract

내용 없음.No content.

Description

로울러형 캠 팔로워Roller Type Cam Followers

제1도는 종래의 강구형 캠 팔로워를 나타낸 구성단면도.1 is a sectional view showing a conventional steel cam follower.

제2도는 본 고안인 로울러형 캠 팔로워를 나타낸 구성단면도이다.2 is a cross-sectional view showing a roller type cam follower of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 로커암 12 : 밸브10: rocker arm 12: valve

14 : 밸브 스프링 16 : 피스톤14 valve spring 16 piston

18a, 18b : 로드 20a, 20b : 캠 팔로워18a, 18b: Rod 20a, 20b: Cam Followers

22 : 강구 24 : 캠22: steel ball 24: cam

26 : 실린더 헤드 28a, 28b : 호올26: cylinder head 28a, 28b: hool

30 : 핀 32 : 로울러30: pin 32: roller

본고안은 로울러형 캠 팔로워(Cam Follower)에 관한 것으로서, 보다 상세하게는 엔진의 로커암(Rocker Arm)와 연결된 캠 팔로워를 로울러형으로 형성함으로써 캠마모를 방지하여 최적운전 조건을 유지하도록 한 것이다.This paper relates to a roller type cam follower. More specifically, the cam follower connected to the rocker arm of the engine is formed into a roller type to prevent cam wear and maintain optimal operating conditions. .

주지하는 바와 같이 엔진에는 피스톤의 상부에 설치되어 있는 밸브와 연결된 로커암은 캠과 접촉되어 밸브를 열어주는 역할을 한다. 이는 로커암 축에 의해 지지되어 실린더 헤드(cyclinder Head)에 설치되며, 푸시로드(Push Rod) 또는 캠에 의해 밀어 올려지며 다른 한끝은 밸브 스템(Valve Stem)을 눌러 밸브를 열게 된다.As is well known, the rocker arm connected to the valve installed on the upper part of the piston is in contact with the cam to open the valve. It is supported by the rocker arm shaft and installed on the cylinder head, pushed up by a push rod or cam, and the other end presses the valve stem to open the valve.

종래에는 제 1 도에서 보는 바와 같이, 스포츠카와 같은 엔진에는 로커암(10)과 연결된 밸브(12)의 외곽으로 밸브 스프링(14)이 설치되고 이 로커암(10)에는 피스톤(16)이 내장되며 이 피스톤(16)은 로드(18b)를 통하여 캠 팔로워(20a)의 일단과 연결되는데, 이 캠 팔로워(20a)의 타단에는 강구(steel ball,22)가 일부는 내장되고 다른 일부는 돌출되어 캠(24)과 점접촉으로 되어 있다.Conventionally, as shown in FIG. 1, an engine such as a sports car has a valve spring 14 installed outside the valve 12 connected to the rocker arm 10, and the rocker arm 10 includes a piston 16. The piston 16 is connected to one end of the cam follower 20a through the rod 18b, and at the other end of the cam follower 20a, a steel ball 22 is partially embedded and the other part is protruded. The cam 24 is in point contact with the cam 24.

피스톤이 고속으로 상하 왕복운동하면 실린더 헤드(26)에서 밸브(12)가 개.폐하게 되는데, 이때 밸브(12)와 연결된 로커암(10)의 강구(22)와 캠(24)이 많은 점접촉을 하면 접촉응력이 발생하여 서로 마모가 발생하게 되는 문제점이 발생되었다.When the piston moves up and down at high speed, the valve 12 opens and closes at the cylinder head 26. At this time, the steel balls 22 and the cam 24 of the rocker arm 10 connected to the valve 12 have many points. When the contact occurs, the contact stress is generated and the wear occurs with each other.

본 고안은 상기와 같은 문제점을 고려하여 창안한 것으로서, 본 고안의 목적은 엔진의 로커암과 연결된 캠 팔로워의 일단은 회전가능하도록 로드와 연결하고 타단은 로울러를 캠과 선접촉이 이루어지도록 연결함으로써 마모를 방지하여 최적운전 조건을 유지하도록 하는데 있다.The present invention was devised in consideration of the above problems, and an object of the present invention is to connect one end of a cam follower connected to the rocker arm of the engine to a rotatable rod and the other end to connect the roller to make a linear contact with the cam. To prevent wear and maintain optimal operating conditions.

상기와 같은 목적을 달성하기 의한 본 고안의 특징은, 로커암에는 로드가 연결된 피스톤이 내장되고 이 로드에는 캠 팔로워의 일단이 연결되는 동시에 이 캠 팔로워의 타단에 연결되는 강구는 캠과 점접촉으로 이루어지는 구조에 있어서, 회전가능하도록 상기 로드와 캠 팔로워 일단은 핀으로 연결하고, 상기 캠과 선접촉되도록 상기 캠 팔로워의 타단에는 로울러를 연결한 것에 있다.A feature of the present invention by achieving the above object is that the rocker arm has a built-in piston connected to the rod and the rod is connected to one end of the cam follower and the other end of the cam follower is in point contact with the cam. In the structure, the rod and the cam follower one end is connected to the pin by a rotatable, and the roller is connected to the other end of the cam follower to be in line contact with the cam.

이하, 본 고안을 첨부된 도면에 의거하여 설명하면 다음과 같다. 도면중, 제2도는 본 고안인 로울러형 캠 팔로워를 나타낸 구성단면도이다.Hereinafter, the present invention will be described with reference to the accompanying drawings. 2 is a sectional view showing the roller-type cam follower of the present invention.

로드(18b)의 호올(28a)과 캠 팔로워(20b) 일단의 호올(28b)에는 회전가능하도록 핀(30)으로 연결하고 캠 팔로워(20)의 타단에는 캠(24)과 선접촉이 이루어 지도록 로울러(32)를 연결한다.The hoist 28a of the rod 18b and the cam follower 20b at one end thereof are connected to the rotatable pin 30 so as to be rotatable, and the other end of the cam follower 20 is in line contact with the cam 24. Connect the roller (32).

이와 같이 구성된 상태에서 피스톤이 고속으로 상하 왕복운동하면 로커암(10)과 연결된 캠 팔로워(20b)의 로울러(32)가 캠(24)과 선접촉됨으로써 접촉면적이 확대되어 마모를 방지할 수 가 있게 된다.When the piston is reciprocated up and down at a high speed in this configuration, the roller 32 of the cam follower 20b connected to the rocker arm 10 is in linear contact with the cam 24, thereby increasing the contact area to prevent wear. Will be.

그리고 캠 팔로워(20b)와 피스톤(16)의 로드(18b)가 회전이 가능하므로 자동차의 노면상태가 평탄한 곳이 아닌 울퉁불퉁한 곳을 주행하더라도 상기 로울러(32)와 캠(24)이 안정성있게 접촉을 유지할 수가 있게 되어 접촉응력을 완화시켜 주면서 캠 팔로워(20b)의 가변을 가능하게 하는 것이다.In addition, since the cam follower 20b and the rod 18b of the piston 16 are rotatable, the roller 32 and the cam 24 are stably in contact with each other even when the road surface of the vehicle is driven in an uneven place. It is possible to maintain the to reduce the contact stress is to enable the change of the cam follower (20b).

이상에서와 같이 본 고안인 로울러형 캠 팔로워에 따르면, 엔진의 로커암(10)과 연결된 캠 팔로워(20b)의 일단은 회전가능하도록 로드(18b)와 연결하고 타단은 로울러(32)를 캠(24)과 선접촉이 이뤄지도록 연결하여 접촉면적을 확대함으로써 마모를 방지하여 최적운전 조건을 유지하는 효과가 있다.According to the roller-type cam followers of the present invention as described above, one end of the cam follower 20b connected to the rocker arm 10 of the engine is connected to the rod 18b so as to be rotatable, and the other end connects the roller 32 to the cam ( 24) and the line contact is made to increase the contact area to prevent wear to maintain the optimum operating conditions.

Claims (1)

로커암에는 로드가 연결된 피스톤이 내장되고 이 로드에는 캠 팔로워의 일단이 연결되는 동시에 이 캠 팔로워의 타단에 연결되는 강구는 캠과 점접촉으로 이루어지는 구조에 있어서, 회전가능하도록 로드(18b)와 캠 팔로워(20b) 일단은 핀(30)으로 연결하고, 상기 캠(24)과 선접촉되도록 상기 캠 팔로워(20b)의 타단에는 로울러(32)를 연결한 것을 특징으로 하는 로울러형 캠 팔로워.The rocker arm has a piston connected with a rod, and the rod has one end of a cam follower and a steel ball connected to the other end of the cam follower having a point contact with the cam, so that the rod 18b and the cam are rotatable. A follower (20b) roller type cam follower, characterized in that one end is connected to the pin (30), and the roller (32) is connected to the other end of the cam follower (20b) to be in line contact with the cam (24).
KR2019940025462U 1994-09-30 1994-09-30 Roller type cam follower KR960008828Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019940025462U KR960008828Y1 (en) 1994-09-30 1994-09-30 Roller type cam follower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019940025462U KR960008828Y1 (en) 1994-09-30 1994-09-30 Roller type cam follower

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KR960011419U KR960011419U (en) 1996-04-15
KR960008828Y1 true KR960008828Y1 (en) 1996-10-09

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