KR20010054497A - Rocker cover fitting structure to improve sealing - Google Patents

Rocker cover fitting structure to improve sealing Download PDF

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Publication number
KR20010054497A
KR20010054497A KR1019990055331A KR19990055331A KR20010054497A KR 20010054497 A KR20010054497 A KR 20010054497A KR 1019990055331 A KR1019990055331 A KR 1019990055331A KR 19990055331 A KR19990055331 A KR 19990055331A KR 20010054497 A KR20010054497 A KR 20010054497A
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KR
South Korea
Prior art keywords
nut
stud bolt
compression spring
rocker cover
bush
Prior art date
Application number
KR1019990055331A
Other languages
Korean (ko)
Inventor
류시혁
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 KR1019990055331A priority Critical patent/KR20010054497A/en
Publication of KR20010054497A publication Critical patent/KR20010054497A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F02F11/002—Arrangements of sealings in combustion engines  involving cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • F02F2007/0063—Head bolts; Arrangements of cylinder head bolts

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)

Abstract

PURPOSE: A locker arm mounting structure for preventing the sealing property is provided to elastically support a nut for fastening and coupling a stud bolt by a compression spring for maintaining the elastic force for a long time to continuously guarantee the sealing effect, thereby preventing the releasing of the stud bolt and the noise generation due to the vibration and improving the durability. CONSTITUTION: A locker arm mounting structure for preventing the sealing property includes a stud bolt(3) for coupling a locker cover(2) with a cylinder head(1), a bush(5) to be fitted to the stud bolt for applying a coupling torque, a nut(4) for fastening the stud bolt, and a compression spring(6) fitted on an outer periphery of the bush to be elastically extended in a direction opposite to the fastening direction of the nut when the bolt is fastened by the nut, wherein the compression spring elastically supports the nut via a retainer(7) mounted at an upper part.

Description

밀봉성 향상을 위한 로커카바 장착구조{Rocker cover fitting structure to improve sealing}Rocker cover fitting structure to improve sealing

본 발명은 밀봉성 향상을 위한 로커카바 장착 구조 개선에 관한 것이다.The present invention relates to improved rocker cover mounting structure for improving sealability.

실린더 헤드 위에는 흡ㆍ배기밸브를 개폐하기 위한 캠과 캠축 및 로커아암등으로 구성된 밸브기구가 장착되어 있어 이 밸브기구를 보호하기 위해 도 2에 도시하는 것과 같이 실린더헤드(20)에 로커카바(21)를 장착하고 있다.On the cylinder head, a valve mechanism composed of a cam for opening and closing the intake / exhaust valve, a camshaft, a rocker arm, and the like is mounted. As shown in FIG. ) Is attached.

이 밸브기구에는 윤활을 위하여 오일이 공급되고, 또 흡배기 밸브를 통하여 연소실로부터 블로바이가스등이 누설되므로, 이 오일과 가스의 외부 누출을 방지하기 위해 실린더헤드(20)와 로커카바(21)의 접촉면에는 가스켓(22)이 개재되어 있으며, 이 가스켓(22)은 볼트(23)의 체결력에 의해 적당히 압축되어져 밀봉력을 증대시키게 된다.The valve mechanism is supplied with oil for lubrication, and blow-by gas or the like leaks from the combustion chamber through the intake / exhaust valve, so that the contact surface between the cylinder head 20 and the rocker cover 21 is prevented to prevent external leakage of this oil and gas. The gasket 22 is interposed therebetween, and the gasket 22 is appropriately compressed by the fastening force of the bolt 23 to increase the sealing force.

그런데 엔진은 끊임없이 진동하므로 볼트(23)가 풀어져 가스켓(22)의 시일 기능이 저하되는 것을 방지코자 볼트(23)에는 원통형의 금속재 부쉬(24)를 끼우고, 또 와셔(25)와 고무완충재(26)를 개재하여 체결 토오크를 갖도록 조여 체결하므로써, 고무완충재(26)의 압축 반발력에 의한 탄발력으로 볼트(23)의 이완을 방지하고 있다.However, the engine constantly vibrates so that the bolt 23 is loosened to prevent the sealing function of the gasket 22 from being lowered. The bolt 23 is fitted with a cylindrical metal bush 24, and the washer 25 and the rubber buffer ( By tightening so as to have a tightening torque through 26, the loosening of the bolt 23 is prevented by the repulsive force due to the compression repulsive force of the rubber buffer 26.

그러나 고무완충재(26)는 압축된 상태에서 초기에는 원하는 탄성력을 유지하나 시간이 경과하면 경화하면서 탄성력을 상실하므로써 가스켓(22)의 시일 기능이 상실하게 되는 문제점 및 고무재의 특성상 다양한 물성치의 확보가 불가능하여 최적의 러버 장착 설계 및 시험 개발이 어렵다는 문제점이 있다.However, the rubber buffer 26 maintains the desired elastic force at the initial stage in the compressed state, but loses the elastic force while hardening over time, so that the sealing function of the gasket 22 is lost and various properties cannot be secured due to the properties of the rubber material. Therefore, there is a problem in that the optimum rubber mounting design and test development are difficult.

이에 본 발명은 상기한 문제점을 감안하여 제안한 것으로서 그의 목적으로 하는 것은 시일 특성의 장시간 유지가 가능하며, 내구성이 증대되는 로커카바 장착구조를 제공하는데 있다.Accordingly, the present invention has been proposed in view of the above problems, and its object is to provide a rocker cover mounting structure in which seal characteristics can be maintained for a long time and durability is increased.

상기한 목적을 달성하기 위해 본 발명의 로커카바 장착구조는 로커카바를 가스켓을 개재하여 실린더헤드에 볼트체결하여 장착하는 것에 있어서,In order to achieve the above object, the rocker cover mounting structure of the present invention is for mounting the rocker cover bolted to the cylinder head via a gasket,

로커카바와 실린더헤드를 체결하는 스터드 볼트와;A stud bolt for fastening the rocker cover to the cylinder head;

체결토오크를 주기 위해 상기 스터드 볼트에 끼워지는 부쉬와;A bush fitted to the stud bolt to provide a tightening torque;

상기 스터드 볼트를 조임하는 너트와;A nut for tightening the stud bolt;

상기 너트의 조임시 압축되면서 너트를 조임 방향과 반대되는 축방향으로 탄발하도록 부쉬의 외주에 끼워지는 압축스프링;을 포함하여 구성되는 것을 특징으로 한다.And a compression spring fitted to an outer circumference of the bush to compress the nut in the axial direction opposite to the tightening direction while being compressed when the nut is tightened.

본 발명의 청구항 2 기재에 의하면 상기 압축스프링은 상단의 리테이너를 통하여 너트체를 탄발하는 것을 특징으로 한다.According to claim 2 of the present invention, the compression spring is characterized in that the nut body through the upper retainer.

도 1은 본 발명에 의한 밀봉성 향상을 위한 로커카바 장착 구조를 나타내는 도면1 is a view showing a rocker cover mounting structure for improving the sealability according to the present invention

도 2는 종래기술2 is a prior art

※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing

1 : 실린더헤드 2 : 로커카바1 cylinder head 2 rocker cover

3 : 스터트 볼트 4 : 너트3: stud bolt 4: nut

5 : 부쉬 6 : 압축스프링5: bush 6: compression spring

7 : 리테이너 8 : 가스켓7: retainer 8: gasket

이하에 본 발명의 구성과 작용을 첨부한 도면을 참조하여 설명한다.Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명에 의한 로커카바 장착구조를 나타내는 도면으로 도면중 부호 1은 실린더헤드이며, 부호 2는 로커카바이다.1 is a view showing a rocker cover mounting structure according to the present invention, in which 1 is a cylinder head and 2 is a rocker cover.

실린더헤드(1)와 로커카바(2)는 볼트머리가 없는 스터드 볼트(3)에 의해 체결되며, 스터드 볼트(3)는 너트(4)에 의해 조여져 체결된다.The cylinder head 1 and the rocker cover 2 are fastened by a stud bolt 3 without a bolt head, and the stud bolt 3 is tightened by a nut 4.

스터드 볼트(3)의 외주에는 원통형의 금속재 부쉬(5)가 끼워지므로서 너트(4)를 조여 붙일 때 부쉬(5)에 의해 체결 토오크를 주게 된다.Since the cylindrical metal bush 5 is fitted to the outer circumference of the stud bolt 3, the tightening torque is given by the bush 5 when the nut 4 is tightened.

상기 너트(4)는 로커카바(2)의 플랜지(2a)와의 사이에서 탄발하도록 부쉬(5)외주에 끼워져 있는 압축스프링(6)에 의해 지지되며, 압축스프링(6)과 너트(4) 사이에는 리테이너(7)가 개재되어 있어, 너트(4)는 상기 리테이너(7)를 통하여 압축 스프링(6)의 탄발력을 받게 된다.The nut 4 is supported by a compression spring 6 fitted on the outer periphery of the bush 5 so as to be elastic between the flange 2a of the rocker cover 2 and between the compression spring 6 and the nut 4. The retainer 7 is interposed therebetween, and the nut 4 is subjected to the elastic force of the compression spring 6 through the retainer 7.

도면중 부호 8은 로커카바(2)내부를 밀봉하는 가스켓이다.In the figure, reference numeral 8 denotes a gasket for sealing the inside of the rocker cover 2.

이와같은 본 발명은 너트(4)를 조여붙이게 되면 압축스프링(6)이 압축되면서 탄성력을 축적하게 되며, 압축스프링(6)의 탄발력은 너트(4)의 조임 방향과 반대인 축방향으로 너트(4)를 밀어올리게 되므로, 스터드 볼트(4)의 체결력이 유지되며, 이는 고무재의 탄성체에 비하여 장시간 체결 토오크가 유지된다.In the present invention, when the nut 4 is tightened, the compression spring 6 compresses and the elastic force is accumulated, and the elastic force of the compression spring 6 is axially opposite to the tightening direction of the nut 4. Since the (4) is pushed up, the fastening force of the stud bolt 4 is maintained, which maintains the fastening torque for a long time compared to the elastic body of the rubber material.

이 압축스프링(6)은 스프링 상수 K의 조절이 용이하고 또 압축거리(X=F/K)의 조절이 용이하므로, 최적의 체결 토오크 및 가스켓 특성을 유지하도록 설계가 가능하다.The compression spring 6 is easy to adjust the spring constant K and to adjust the compression distance (X = F / K), it can be designed to maintain the optimum tightening torque and gasket characteristics.

이상과 같은 본 발명에 의하면 종래의 고무탄성재 대신 압축스프링을 사용하여 스터드 볼트를 조여 체결하는 너트를 탄발하므로써 스프링의 특성상 장시간 탄성력의 유지가 가능하여 가스켓의 시일성을 지속적으로 확보 할 수 있어 로커카바의 밀봉성이 향상되고 볼트의 풀어짐이 방지되며, 진동에 의한 소음 발생이 줄어들고 장치의 내구성이 증대되는 효과가 있다.According to the present invention as described above, it is possible to maintain the elasticity of the gasket for a long time due to the characteristics of the spring by tightening the nut tightening the stud bolt by using a compression spring instead of the conventional rubber elastic material to ensure the sealability of the gasket The sealability of the cover is improved, the bolts are prevented from being loosened, noise generated by vibration is reduced, and durability of the device is increased.

Claims (2)

로커카바를 가스켓을 개재하여 실린더헤드에 볼트체결하여 장착하는 것에 있어서,In mounting the rocker cover bolted to the cylinder head via a gasket, 로커카바와 실린더헤드를 체결하는 스터드 볼트와;A stud bolt for fastening the rocker cover to the cylinder head; 체결토오크를 주기 위해 상기 스터드 볼트에 끼워지는 부쉬와;A bush fitted to the stud bolt to provide a tightening torque; 상기 스터드 볼트를 조임하는 너트와;A nut for tightening the stud bolt; 상기 너트의 조임시 압축되면서 너트를 조임 방향과 반대되는 축방향으로 탄발하도록 부쉬의 외주에 끼워지는 압축스프링;을 포함하여 구성되는 것을 특징으로 하는 밀봉성 향상을 위한 로커카바 장착구조.And a compression spring fitted to the outer circumference of the bush to compress the nut in the axial direction opposite to the tightening direction while compressing the nut. 제 1 항에 있어서,The method of claim 1, 상기 압축스프링은 상단의 리테이너를 통하여 너트체를 탄발하는 것을 특징으로 하는 밀봉성 향상을 위한 로커카바 장착구조.The compression spring is a rocker cover mounting structure for improving the sealability, characterized in that the nut body through the retainer of the upper end.
KR1019990055331A 1999-12-07 1999-12-07 Rocker cover fitting structure to improve sealing KR20010054497A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
KR1019990055331A KR20010054497A (en) 1999-12-07 1999-12-07 Rocker cover fitting structure to improve sealing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100587810B1 (en) * 2004-04-19 2006-06-12 현대자동차주식회사 Mounting apparatus of fuel line
KR101438836B1 (en) * 2008-12-04 2014-09-05 현대자동차주식회사 Rocker cover fastening device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027644A (en) * 1975-06-26 1977-06-07 Cummins Engine Company, Inc. Isolated engine cover
JPS56101449U (en) * 1979-12-31 1981-08-10
JPS59175792U (en) * 1983-05-13 1984-11-24 トヨタ自動車株式会社 Cylinder head cover mounting structure
JPS6047992U (en) * 1983-09-08 1985-04-04 三菱自動車工業株式会社 Mounting structure of covers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027644A (en) * 1975-06-26 1977-06-07 Cummins Engine Company, Inc. Isolated engine cover
JPS56101449U (en) * 1979-12-31 1981-08-10
JPS59175792U (en) * 1983-05-13 1984-11-24 トヨタ自動車株式会社 Cylinder head cover mounting structure
JPS6047992U (en) * 1983-09-08 1985-04-04 三菱自動車工業株式会社 Mounting structure of covers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100587810B1 (en) * 2004-04-19 2006-06-12 현대자동차주식회사 Mounting apparatus of fuel line
KR101438836B1 (en) * 2008-12-04 2014-09-05 현대자동차주식회사 Rocker cover fastening device

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