KR20010008747A - Rocker arm screw - Google Patents

Rocker arm screw Download PDF

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Publication number
KR20010008747A
KR20010008747A KR1019990026717A KR19990026717A KR20010008747A KR 20010008747 A KR20010008747 A KR 20010008747A KR 1019990026717 A KR1019990026717 A KR 1019990026717A KR 19990026717 A KR19990026717 A KR 19990026717A KR 20010008747 A KR20010008747 A KR 20010008747A
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KR
South Korea
Prior art keywords
pad
contact
rocker arm
coupling
arm screw
Prior art date
Application number
KR1019990026717A
Other languages
Korean (ko)
Inventor
이덕우
Original Assignee
정몽규
현대자동차 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 정몽규, 현대자동차 주식회사 filed Critical 정몽규
Priority to KR1019990026717A priority Critical patent/KR20010008747A/en
Publication of KR20010008747A publication Critical patent/KR20010008747A/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • 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
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing 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 locker arm screw is provided to reduce assembly process by simplifying the structure of the locker arm screw. CONSTITUTION: A locker arm screw comprises a cylindrical body(11) and a narrow section(12) arranged at the lower end of the body. A contact section(13) of the locker arm is formed into a sphere downwardly from the narrow section. A pad(14) upper surface of which is formed to surface-contact the contact section and lower surface of which is formed flat so as to contact a valve stem end. A pad coupling section(16) having an upper portion formed narrow to be compressively adhered to the narrow section of the locker arm, and a lower portion formed to surround the pad, is coupled to the outer surface of the pad. The pad has a coupling groove(15) formed at the outer periphery of the pad, and the pad coupling section has a coupling protrusion(17) formed at the inner lower end of the pad coupling section. The coupling protrusion is inserted into the coupling groove of the pad. Since the bottom surface of the pad is formed flat, wear rate is lowered.

Description

록커암 스크류{Rocker arm screw}Rocker arm screw

본 발명은 록커암 스크류에 관한 것으로서, 특히 록커암 스크류를 단순 형상으로 구성하여 조립 공정이 감소하여 생산성이 향상되고, 밸브 스템 앤드부에 접촉되는 패드의 저면을 평평하게 형성하여 마모율이 하락하도록 한 록커암 스크류에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rocker arm screw. In particular, the rocker arm screw is configured in a simple shape to reduce the assembling process, thereby improving productivity, and to flatten the bottom of the pad contacting the valve stem end part so as to reduce the wear rate. A rocker arm screw.

일반적으로 엔진에는 캠의 회전에 따라 흡기 또는 배기밸브를 개폐시키는 록커암이 장착되고 있는데, 이 록커암에 삽입 결합되어 실질적으로 밸브 스템 엔드부에 접촉되는 것이 록커암 스크류이다.In general, an engine is equipped with a rocker arm that opens and closes an intake or exhaust valve according to the rotation of the cam. The rocker arm screw is inserted into and coupled with the rocker arm to substantially contact the valve stem end portion.

도 1 은 종래의 록커암 스크류를 도시한 것으로서, 록커암의 삽입공에 삽입되기 위해 원기둥 형상으로 형성되는 몸체(1)와, 상기 몸체(1)의 하단 외주면 상에 돌출되며, 그 측면으로 결합홈(3)이 요입형성되는 결합부(2)와, 상기 결합부(2)의 저면에 반구형상으로 형성되는 접촉부(4)와, 상면에는 상기 접촉부(4)에 접촉되기 위한 반구형의 홈이 형성되고 하면은 밸브 스템 앤드부에 접촉되는 패드(5)와, 상기 패드(5)가 몸체(1)의 하단에 결합되도록 하는 것으로 상단 내측에는 상기 결합홈(3)에 형합되기 위한 결합돌기(7)가 돌출 형성되어 있고 하단은 패드(5)의 외주면을 잡아주기 위해 좁게형성되어 있는 패드결합부(6)로 구성된다.1 shows a conventional rocker arm screw, which is formed in a cylindrical shape to be inserted into an insertion hole of a rocker arm, protrudes on the outer peripheral surface of the lower end of the body 1, and is coupled to the side thereof. Coupling portion 2 in which the groove 3 is recessed, contact portion 4 formed in a hemispherical shape on the bottom of the coupling portion 2, and a hemispherical groove for contacting the contact portion 4 on the upper surface It is formed and the bottom surface is in contact with the valve stem and the end portion 5, and the pad 5 is to be coupled to the lower end of the body (1) is coupled to the engaging projection for forming the coupling groove (3) inside the upper end ( 7) is formed to protrude and the lower end is composed of a pad engaging portion 6 is formed narrow to hold the outer peripheral surface of the pad (5).

이와같이 구성된 록커암 스크류는 록커암의 삽입공에 삽입된 상태로 록커암이 캠의 회전에 의해 시이소 동작할때 록커암 스크류의 패드(5)가 밸브 스템 앤드부와 접촉되면서 밸브를 개폐시킨다.The rocker arm screw configured as described above opens and closes the valve as the pad 5 of the rocker arm screw comes into contact with the valve stem end part when the rocker arm is operated by the rotation of the cam in the state of being inserted into the insertion hole of the rocker arm.

그러나, 종래의 록커암 스크류는 몸체의 하단에 수평방향으로 돌출되도록 결합부(2)가 형성되어 있기 때문에 몸체 부분을 가공하기가 매우 까다로워져 작업성이 떨어지고 생산성이 하락하는 문제점이 발생하고 있으며, 록커암 스크류를 조립할때 패드와 패드 결합부를 몸체의 아래쪽에서 위로 삽입하여야만 하므로 자동화하기가 어려운 문제점이 있었다.However, the conventional rocker arm screw has a coupling part (2) is formed so as to protrude in the horizontal direction at the bottom of the body is very difficult to process the body portion, there is a problem that workability and productivity is reduced, When assembling the rocker arm screw, the pad and the pad coupling portion has to be inserted from the bottom up of the body, so it was difficult to automate.

즉, 록커암 스크류를 조립할때 몸체(1)의 접촉부(4)에 패드(5)가 맞대어진 상태에서 패드 결합부(6)를 상기 구조물의 아래쪽에서 상측으로 압입하여 패드 결합부(6)의 결합돌기(7)가 결합부(2)의 결합홈(3)에 형합되도록 해야만 하는등, 록커암 스크류를 조립할 때에는 항시 몸체(1)의 아래쪽으로 패드 결합부(6)를 압입하여야만 하므로 자동화하기가 어려운 문제점이 있었다.That is, when assembling the rocker arm screw, the pad engaging portion 6 is press-fitted from the bottom of the structure to the upper side of the pad engaging portion 6 while the pad 5 is in contact with the contact portion 4 of the body 1. When assembling the rocker arm screw, the coupling protrusion 7 must be fitted to the coupling groove 3 of the coupling portion 2, so that the pad coupling portion 6 must be press-fitted under the body 1 at all times. There was a difficult issue.

따라서, 상기 문제점을 해결하기 위한 본 발명은 패드의 외주면상에 결합홈을 요입 형성하고, 패드결합부의 내측 하단에 결합돌기를 돌출시켜 패드결합부가 몸체의 저면에 고정된 상태에서 패드를 상측에서 하측으로 압입하여 결합되도록 하므로서, 록커암 스크류를 단순 형상으로 구성하여 조립 공정이 감소됨은 물론 생산성이 향상되고, 밸브 스템 앤드부에 접촉되는 패드의 저면을 평평하게 형성하여 마모율이 하락하도록 한 록커암 스크류를 제공함을 목적으로 한다.Therefore, the present invention for solving the above problems is formed in the groove grooves on the outer peripheral surface of the pad, protruding the engaging projection on the inner lower end of the pad engaging portion pad in the state in which the pad engaging portion is fixed to the bottom of the body from the lower side The rocker arm screw has a simple shape, which reduces the assembling process and improves productivity by forming the rocker arm screw in a simple shape, thereby flattening the bottom of the pad in contact with the valve stem end part, thereby reducing the wear rate. It is intended to provide.

상기 목적달성을 위한 본 발명의 특징은,Features of the present invention for achieving the above object,

원기둥 형상의 몸체와, 이 몸체의 하단에 잘록하게 요입 형성된 잘록부를 포함하여 구성된 록커암 스크류에 있어서,In the rocker arm screw comprising a cylindrical body and a narrowed concave portion formed in the lower end of the body,

상기 잘록부의 하측으로 접촉부를 둥글게 형성하고, 이 접촉부의 하측으로 상면이 접촉부에 면 접촉되고 하면이 밸브스템 앤드부에 접촉되는 패드를 형합하며, 상측이 좁게 형성되어 잘록부에 압착되고 하측은 패드를 감싸도록 형성된 패드 결합부를 패드의 외측으로 결합하되,The contact portion is rounded to the lower side of the cut-off portion, and the lower side of the contact portion forms a pad contacting the valve stem and the lower surface with the upper surface contacting the contact portion. Combine the pad engaging portion formed to surround the outside of the pad,

패드의 외주면상에 결합홈을 요입 형성하고, 패드결합부의 내측 하단에 상기 결합홈에 삽입 결합되기 위한 결합돌기를 돌출시킨 것을 특징으로 한다.A coupling groove is formed on the outer circumferential surface of the pad and protrudes a coupling protrusion for inserting into the coupling groove at an inner lower end of the pad coupling portion.

도 1 은 종래의 록커암 스크류를 보인 단면도.1 is a cross-sectional view showing a conventional rocker arm screw.

도 2 는 본 발명의 록커암 스크류를 보인 단면도.2 is a cross-sectional view showing a rocker arm screw of the present invention.

도 3 는 본 발명의 사용상태도.3 is a state diagram used in the present invention.

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

11 : 몸체 12 : 잘록부11 body 12: narrow part

13 : 접촉부 14 : 패드13 contact 14 pad

15 : 결합홈 16 : 패드결합부15: coupling groove 16: pad coupling portion

17 : 결합돌기17: engaging projection

이하, 첨부된 도면 도 2 와 도 3 을 참고하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings Figures 2 and 3 will be described a preferred embodiment of the present invention.

상기 도면에 의하면 본 발명은 원기둥 형상으로 형성된 몸체(11)의 하측에 잘록하게 요입 형성된 잘록부(12)를 형성하고, 이 잘록부(12)의 하측에 원형의 접촉부(13)를 형성하는데, 이 접촉부(13)를 반원 형상이 아닌 반원 보다는 크고 완전한 원형 보다는 작은 형태로 둥글게 형성하였다.According to the drawings, the present invention forms a concave concave portion 12 formed in a concave concave on the lower side of the body 11 formed in a cylindrical shape, and to form a circular contact portion 13 on the lower side of the concave portion 12, The contact portion 13 was rounded in a shape that is larger than a semicircle and smaller than a perfect circle rather than a semicircle.

상기 접촉부(13)의 하단에는 패드(14)를 결합하였는데, 이 패드(14)의 상면은 접촉부(13)의 저면과 면접촉되도록 홈을 형성하고, 패드(14)의 하면은 밸브 스템 앤드부(23)에 접촉되도록 평평하게 형성하였으며, 이 패드(14)의 양측면으로는 후설하는 패드 결합부(16)의 결합돌기(17)가 결합되기 위한 결합홈(15)을 형성하였다.The pad 14 is coupled to the lower end of the contact portion 13, and the upper surface of the pad 14 forms a groove to be in surface contact with the bottom surface of the contact portion 13, and the lower surface of the pad 14 has a valve stem end portion. It was formed flat so as to contact (23), and both sides of the pad (14) formed a coupling groove (15) for engaging the engaging projection (17) of the pad coupling portion 16 to be rearranged.

그리고, 상기 패드 결합부(16)는 패드(14)의 외측을 감싸도록 형성되어 패드(14)가 접촉부(13)에 면접촉된 상태로 고정되도록 하는 것으로서, 그 상단은 잘록부(12)에 압착되도록 하기 위해 좁게 형성하였고, 그 하단 내측에는 상기 결합홈(15)에 결합되기 위한 결합돌기(17)를 돌출시켜 이 결합홈(15)에 결합돌기(17)가 삽입 결합되므로서 패드(14)가 접촉부(13)에 접촉된 상태로 고정되는 것이다.In addition, the pad coupling portion 16 is formed to surround the outside of the pad 14 so that the pad 14 is fixed in a state of being in surface contact with the contact portion 13, and an upper end thereof is formed at the cutoff portion 12. It was formed narrowly to be compressed, the bottom of the pad 14 by being protruded into the coupling protrusion 17 to be coupled to the coupling groove 15 to the coupling groove 15 is inserted into the coupling groove (15). ) Is fixed in contact with the contact portion 13.

이와같이 구성된 본 발명의 록커암 스크류의 조립과정을 설명하면, 접촉부(13)가 상면을 향하도록 몸체(11)를 세워놓고 패드 결합부(16)의 상단이 잘록부(12)와 접촉부(13)의 경계면에 압착되도록 한다.Referring to the assembling process of the rocker arm screw of the present invention configured as described above, the body 11 is erected so that the contact portion 13 faces the upper surface, and the upper end of the pad coupling portion 16 has the cut portion 12 and the contact portion 13. It is pressed against the interface.

그리고, 패드 결합부(16)의 안쪽으로 패드(14)를 압입하여 패드(14)의 양측에 요입 형성된 결합홈(15)에 패드 결합부(16)의 결합돌기(16)가 결합되도록 하므로서, 패드(14)가 접촉부(13)에 면접촉된 상태로 고정되는 것이다.Then, the pad 14 is pressed into the pad coupling part 16 so that the coupling protrusion 16 of the pad coupling part 16 is coupled to the coupling groove 15 formed on both sides of the pad 14, The pad 14 is fixed in surface contact with the contact portion 13.

이와같이 제작된 록커암 스크류의 사용은 도 3 에 도시된 바와같이 록커암 몸체(20)의 일측으로 형성된 록커암(21)의 삽입공에 아래쪽에서 위쪽으로 몸체(11)를 삽입하고, 록커암(21)의 상면으로 돌출되는 몸체(11)의 끝단에 너트(24)를 체결하여 록커암(21)에 스크류가 고정되도록 한다.The use of the rocker arm screw manufactured as described above inserts the body 11 from the bottom to the top of the rocker arm 21 into the insertion hole of the rocker arm 21 formed as one side of the rocker arm body 20, and the rocker arm ( The screw 24 is fixed to the rocker arm 21 by fastening the nut 24 to the end of the body 11 protruding to the upper surface of the 21.

상기 설명과 같이 록커암(21)에 록커암 스크류가 결합된 상태에서 캠이 회전하면, 이 캠에 접촉되어 있는 캠접촉면(22)이 상,하로 움직이면서 이와 대향되는 위치에 형성되어 있는 록커아암(21) 또한 상,하로 움직이게 되고, 이에의해 록커아암(21)에 장착되어 있는 록커암 스크류의 패드(14)가 밸브 스템 앤드부(23)와 접촉되면서 밸브를 개폐시키게 된다.As described above, when the cam rotates while the rocker arm screw is coupled to the rocker arm 21, the cam contact surface 22 which is in contact with the cam moves up and down, and is formed at a position opposite to the rocker arm ( 21) also moves up and down, whereby the pad 14 of the rocker arm screw mounted on the rocker arm 21 is in contact with the valve stem end portion 23 to open and close the valve.

이상에서 설명한 바와같은 본 발명은 몸체(11)의 하단에 형성된 잘록부(12)와 접촉부(13)의 형상이 단순할 뿐만 아니라 패드 결합부(14)가 잘록부(12)에 압착 고정된 상태에서 패드 결합부(14) 내측으로 패드(14)를 압입하여 패드(14)를 접촉면(13)에 결합시키는 것이므로 제품의 제작이 매우 용이하고, 윤활유가 잘록부(12)와 패드 결합부(16)의 사이로 스며들어 접촉부(13)와 패드(14)의 접촉면을 윤활하게 되므로 해당 부품의 마모량이 감소되는 효과를 기대할 수 있다.The present invention as described above is not only the shape of the narrow portion 12 and the contact portion 13 formed on the lower end of the body 11, but also the pad coupling portion 14 is fixed to the narrow portion 12 by pressing Since the pad 14 is pressed into the pad engaging portion 14 to couple the pad 14 to the contact surface 13, the manufacturing of the product is very easy, and the lubricating oil is the cutout portion 12 and the pad engaging portion 16. ) So that the contact surface of the contact portion 13 and the pad 14 is lubricated between the () and the wear amount of the corresponding parts can be expected to be reduced.

또한, 접촉부(13)와 패드(14)의 마모량이 감소됨에 따라 밸브 스템 앤드부(23)와 패드(14) 사이의 간극 조정 횟수가 감소하게 된다.In addition, as the wear amount of the contact portion 13 and the pad 14 decreases, the number of times of clearance adjustment between the valve stem end portion 23 and the pad 14 decreases.

이상에서 설명한 바와같이 본 발명은 패드의 외주면상에 결합홈을 요입 형성하고, 패드결합부의 내측 하단에 결합돌기를 돌출시켜 패드결합부가 몸체의 저면에 고정된 상태에서 패드를 상측에서 하측으로 압입하여 결합되도록 하므로서, 록커암 스크류를 단순 형상으로 구성하여 조립 공정이 감소됨은 물론 생산성이 향상되고, 밸브 스템 앤드부에 접촉되는 패드의 저면을 평평하게 형성하여 마모율이 하락하도록 한 록커암 스크류이다.As described above, the present invention provides a recess in the coupling groove on the outer circumferential surface of the pad, and protrudes the coupling protrusion on the inner lower end of the pad coupling portion to press the pad from the upper side to the lower side while the pad coupling portion is fixed to the bottom of the body. By combining the rocker arm screw in a simple shape, the assembly process is reduced as well as productivity is improved, and the rocker arm screw is formed to flatten the bottom surface of the pad in contact with the valve stem end portion to reduce the wear rate.

Claims (1)

원기둥 형상의 몸체(11)와, 이 몸체의 하단에 잘록하게 요입 형성된 잘록부 (12)를 포함하여 구성된 록커암 스크류에 있어서,In the rocker arm screw comprising a cylindrical body (11) and a narrowing portion (12) formed in a concave concave at the bottom of the body, 상기 잘록부(12)의 하측으로 접촉부(13)를 둥글게 형성하고, 이 접촉부(13)의 하측으로 상면이 접촉부(13)에 면 접촉되고 하면이 밸브스템 앤드부에 접촉되는 패드(14)를 형합하며, 상측이 좁게 형성되어 잘록부(12)에 압착되고 하측은 패드 (14)를 감싸도록 형성된 패드 결합부(16)를 패드(14)의 외측으로 결합하되,A pad 14 having a rounded contact portion 13 is formed below the cut-out portion 12, and the lower surface of the contact portion 13 is in surface contact with the contact portion 13 and the lower surface is in contact with the valve stem end portion. Forming, the upper side is narrowly formed to be compressed to the narrow portion 12, the lower side is coupled to the pad engaging portion 16 formed to surround the pad 14 to the outside of the pad 14, 패드(14)의 외주면상에 결합홈(15)을 요입 형성하고, 패드결합부(16)의 내측 하단에 상기 결합홈(15)에 삽입 결합되기 위한 결합돌기(17)를 돌출시킨 것을 특징으로 하는 록커암 스크류.A coupling groove 15 is formed on the outer circumferential surface of the pad 14, and a coupling protrusion 17 for protruding into the coupling groove 15 is protruded from an inner lower end of the pad coupling portion 16. Rocker arm screw.
KR1019990026717A 1999-07-03 1999-07-03 Rocker arm screw KR20010008747A (en)

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