KR101673356B1 - Valve lift device of swing arm type - Google Patents

Valve lift device of swing arm type Download PDF

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Publication number
KR101673356B1
KR101673356B1 KR1020150119556A KR20150119556A KR101673356B1 KR 101673356 B1 KR101673356 B1 KR 101673356B1 KR 1020150119556 A KR1020150119556 A KR 1020150119556A KR 20150119556 A KR20150119556 A KR 20150119556A KR 101673356 B1 KR101673356 B1 KR 101673356B1
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KR
South Korea
Prior art keywords
valve
bridge
bent
roller
portions
Prior art date
Application number
KR1020150119556A
Other languages
Korean (ko)
Inventor
최명식
Original Assignee
현대자동차 주식회사
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Publication date
Application filed by 현대자동차 주식회사 filed Critical 현대자동차 주식회사
Priority to KR1020150119556A priority Critical patent/KR101673356B1/en
Application granted granted Critical
Publication of KR101673356B1 publication Critical patent/KR101673356B1/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
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms
    • F01L2105/00—

Abstract

According to an embodiment of the present invention, a swing arm type-valve lift device comprises a body, a support part, a first valve, a second valve and one roller shaft. The body has two parts of a first valve pressing part and a second value pressing part formed on both sides of one end thereof in a widthwise direction. The support part is arranged to support a lower part of the other end of the body upward. The first valve and the second valve are arranged to be pressed by the first valve pressing part and the second valve pressing part of the body, respectively. The roller is arranged to be rotated between the one end of the body and the other end thereof. The roller shaft is coupled to the body to pass through the rotational center of the roller. According to the present invention, the volume of an engine can be effectively reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a swing arm type valve lifting mechanism,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing arm type valve lift mechanism having one roller and two valve pressing portions for lifting a valve provided in an intake port or an exhaust port of a combustion chamber.

Some of the ways of varying the movement of the valve in the combustion period are known. Such a method typically controls the movement of the valve using a structure such as a camshaft, rocker arm, or finger follower.

Valve mechanism is a technique known in particular in internal combustion engines. The main purpose of the fuel is to increase the efficiency of the fuel. The method of directly adjusting the lift of the valve by using the profile of the cam and adjusting the lift of the valve by using the lost motion .

On the other hand, the valve mechanism includes a cam shaft on which a cam is formed, and a swing arm arranged to press the valve by the cam, the swing arm including a roller and a body.

A pressing surface for directly pressing the valve is formed on the body, and a supporting groove supported by the HLA is formed. The pressing surface may wear due to a sliding structure with the valve, which may increase the maintenance cost.

Also, a structure in which one body lifts one valve requires two bodies and rollers to lift the two valves. Thus, the number of assembly parts, the assembly cost, and the maintenance cost may increase.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a swing arm-type valve lift mechanism capable of reducing the replacement cost of a body caused by friction wear and reducing the number of components and assembly cost.

The valve lifting mechanism of the swing arm type according to the embodiment of the present invention includes a body having a first valve pressing part and a second valve pressing part formed on both sides in the width direction at one end thereof, A first and a second valve arranged to be pressed by the first valve depression and the second valve depression of the body respectively, And a roller shaft which is fastened to the body so as to penetrate the rotation center of the roller.

A socket for inserting a part of the upper end of the supporting part may be formed in the lower part of the body.

The first and second valve depressions may be disposed on both sides with respect to the longitudinal center axis of the body, and a bridge may be formed to integrally connect the first and second valve depressions in the width direction.

The first and second valve depressions and the lower surface of the bridge may be formed on the same surface.

The lower surface of the first and second valve depressions may protrude downward with respect to the lower surface of the bridge.

The lower surface of the bridge or the lower surface of the first and second valve depressions may be curved or concave or convex.

The lower surface of the first and second valve depressions may be concave in a curved shape in correspondence with the upper ends of the first and second valves.

The lower surface of the bridge is convex, and the lower surface of the first and second valve press portions can be concave.

And protrusions protruding to the lower portion of the body may be integrally formed between the first valve depressor and the bridge and between the second valve depressor and the bridge.

In the bridge, a first bent portion integrally bent at the roller side end portion is formed, and a second bent portion integrally bent at the opposite side end portion of the roller is formed.

The first and second bent portions may be respectively bent upward, and a lower surface thereof may face the upper surface of the bridge.

The first and second bent portions may be respectively bent downward, and the lower surface thereof may face a lower surface of the bridge.

The first and second bent portions may be respectively bent upward and disposed perpendicular to the bridge.

The valve lifting mechanism of the swing arm type according to the embodiment of the present invention includes a body having a first valve pressing part and a second valve pressing part formed on both sides in the width direction at one end thereof, A first and a second valve arranged to be pressed by the first valve depression and the second valve depression of the body, respectively, and a second valve which is rotatably disposed between one end and the other end of the body And a bridge for integrally connecting the first and second valve press portions in the width direction may be formed.

As described above, in the swing arm-type valve lift mechanism according to the present invention, the two valves are lifted by using one body and one roller, thereby reducing the number of parts, reducing the weight, Reduce maintenance costs, and effectively reduce the volume of the engine.

1 is a schematic perspective view of a swing arm type valve lift mechanism according to the present invention.
2 is a rear view of a swing arm body in a swing arm type valve lift mechanism according to an embodiment of the present invention.
3 is a partial cross-sectional view of a swing arm type valve lifting mechanism according to the line III-III in FIG.
Fig. 4 is a partial cross-sectional view of a swing arm type valve lifting mechanism according to the line IV-IV in Fig. 2;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic perspective view of a swing arm type valve lift mechanism according to the present invention.

1, a swing arm type valve lifting mechanism 120 includes a support portion 100, a body 110, a roller shaft 130, a valve 150, a valve pressing portion 140, and a roller 160, .

The support portion 100 may be prepared as a hydraulic lash adjuster (HLA), which removes a gap between the lower surface of the other end of the body 110 and the support portion 100 by the supplied oil pressure do.

A valve pressing part 140 is formed at one end of the body 110 and the valve pressing part 140 is formed to press the valve 150 at the lower part.

A roller 160 is rotatably disposed on the body 110 between the valve 150 and the support portion 100 and the roller 160 is disposed to be exposed upward and pressed downward by a cam.

The roller shaft 130 is disposed in the width direction of the body 110 through a rotation center portion of the roller 160 and the roller 160 is rotatably disposed on the roller shaft 130.

Therefore, when the cam shaft disposed on the roller 160 rotates, the cam formed on the cam shaft presses the roller 160 downward, and the valve pressing part 140 of the body 110 presses the roller 160 And presses the valve 150 downward.

In the case where one valve 150 is disposed in one swing arm body 110, four swing arm bodies are required when four cylinders are provided with four ports and valves, The number and cost of production can rise.

Therefore, in the embodiment of the present invention, the entire body can be reduced and the maintenance cost can be reduced through the structure in which one body 110 lifts the two valves 150.

2 is a rear view of a swing arm body in a swing arm type valve lift mechanism according to an embodiment of the present invention.

Referring to FIG. 2, a first valve-pressing part 140a and a second valve-pressing part 140b are formed on both sides of the bottom surface of the body 110 in the width direction. The first valve pressing part 140a and the second valve pressing part 140b are formed on both sides with a predetermined distance from the center axis 220 in the longitudinal direction of the body 110. [

The first valve pressing part 140a is disposed to push down the upper end of the first valve 150 and the second valve pressing part 140b is disposed to push the upper end of the second valve 150 downward. do.

A socket 200 is formed on a lower surface of the other end of the body 110 to receive the upper end of the support portion 100 and is inserted between the socket 200 and the first and second valve presses 140a and 140b. The roller 160 is disposed and a bridge 210 is formed to connect the first valve pressing part 140a and the second valve pressing part 140b.

The bridge 210 integrally connects the first valve pressing part 140a and the second valve pressing part 140b to each other so that the first valve pressing part 140a and the second valve pressing part 140b are integrally connected to each other, The first valve body 140a, the second valve presser 140b, and the bridge 210 may be integrally formed.

3 is a partial cross-sectional view of a swing arm type valve lifting mechanism according to the line III-III in FIG.

3, the lower surface of the bridge 210, the lower surface of the first valve pressing part 140a, and the lower surface of the second valve pressing part 140b are formed on one plane As shown in FIG.

Referring to FIG. 2, the lower surface of the first and second valve depressions 140a and 140b protrudes downward with respect to the lower surface of the bridge 210, and has a flat structure.

The lower surface of the first and second valve depressions 140a and 140b protrudes downward with respect to the lower surface of the bridge 210, Has a generally concave shape.

The lower surface of the first and second valve depressions 140a and 140b protrudes downward with respect to the lower surface of the bridge 210, The lower surface of the valve body 140a, b has a concave shape, and the upper end of the valve 150 can be disposed in each concave portion.

The lower surface of the first and second valve depressions 140a and 140b protrudes downward with respect to the lower surface of the bridge 210, The lower surface of the valve body 140a and the lower surface of the bridge 210 may have a concave shape and the upper end of the valve 150 may be disposed at each concave portion.

The lower surface of the first and second valve depressions 140a and 140b is formed on the same surface as the lower surface of the bridge 210 and the first and second valve depressions 140a and 140b are formed on the same surface, b may have a concave shape and the upper end of the valve 150 may be disposed at each concave portion and the lower surface of the bridge 210 is formed flat.

The lower surface of the first and second valve depressions 140a and 140b is formed on the same plane as the lower surface of the bridge 210 and the first and second valve depressions 140a and 140b are formed on the same surface, b and the lower surface of the bridge 210 have a concave shape, and the upper end of the valve 150 may be disposed in each concave portion.

The lower surface of the first and second valve depressions 140a and 140b is formed on the same plane as the lower surface of the bridge 210 and the first and second valve depressions 140a and 140b are formed on the same surface, b have a concave shape and the lower surface of the bridge 210 has a generally convex shape and the upper end of the valve 150 can be disposed in each concave portion.

The lower surface of the first and second valve depressions 140a and 140b is formed on the same plane as the lower surface of the bridge 210 and the first and second valve depressions 140a and 140b are formed on the same surface, b have a concave shape, and the lower surface of the bridge 210 has a generally flat shape, and the upper end of the valve 150 can be disposed in each concave portion.

A protrusion 300 extending downward is provided between one side of the bridge 210 and the first valve pressing part 140a and between the other side of the bridge 210 and the second valve pressing part 140b .

The protrusion 300 can increase the rigidity of the first and second valve pressing parts 140a and 140b and the bridge 210 and prevent the upper end of the valve 150 from being separated from the valve pressing part 140 can do.

Fig. 4 is a partial cross-sectional view of a swing arm type valve lifting mechanism according to the line IV-IV in Fig. 2;

Referring to FIG. 4, the bridge 210 is formed with a first bent portion 400a and a second bent portion 400b, respectively, at one longitudinal end and the other end of the body 110, respectively.

The first bent portion 400a and the second bent portion 400b are bent to the upper side of the bridge 210 and the lower surface of the bent portion 400b is bent toward the upper surface of the bridge 210, do.

The first bent portion 400a and the second bent portion 400b are bent toward the upper side of the bridge 210 and disposed perpendicularly to the upper surface of the bridge 210. Referring to FIG.

The first bent portion 400a and the second bent portion 400b are bent to the lower side of the bridge 210 and the upper surface of the bent portion 400a and the second bent portion 400b are opposite to the lower surface of the bridge 210, do.

The first bent portion 400a and the second bent portion 400b may be integrally formed with the bridge 210 to improve the rigidity of the bridge 210, Thereby enhancing the overall structure of the body 110.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And all changes to the scope that are deemed to be valid.

100: Support 110: Body
120: Lift mechanism 130: Roller shaft
140a: first valve pressing part 140b: second valve pressing part
140: valve pressing part 150: valve
160: roller 200: socket
210: bridge 220: center axis
300: protruding portion 400a: first bent portion
400b: a second bent portion

Claims (13)

A body having two first valve pressing portions and a second valve pressing portion formed on both sides in the width direction;
A support disposed to support a lower portion of the other end of the body upward;
First and second valves arranged to be pressed by the first valve depressor and the second valve depressor, respectively;
One roller rotatably disposed between one end and the other end of the body; And
A roller shaft coupled to the body so as to penetrate the rotation center of the roller; And
The first and second valve pressing portions are disposed on both sides of the body with respect to the central longitudinal axis of the body, the bridge integrally connecting the first and second valve pressing portions in the width direction; Lt; / RTI >
The bridge, and the first and second valve press portions are formed at the same time to form a cross section,
In the bridge,
And a second bent portion integrally bent at the roller side end portion and a second bent portion integrally bent at the opposite side end portion of the roller are formed. The method of claim 1,
And a socket for receiving a part of an upper end of the support portion is formed in a lower portion of the body. The method of claim 1,
Wherein the first and second valve depressions and the lower surface of the bridge are formed on the same plane. The method of claim 1,
And a lower surface of the first and second valve pressing parts protrudes downward with respect to a lower surface of the bridge. The method of claim 1,
Wherein the lower surface of the bridge or the lower surface of the first and second valve press portions is curved or concave or convex. The method of claim 5,
Wherein a lower surface of the first and second valve depressions is concave in a curved shape corresponding to an upper end of the first and second valves. The method of claim 5,
Wherein a lower surface of the bridge is convex, and a lower surface of the first and second valve press portions is concave. The method of claim 1,
Wherein a protrusion formed to protrude from a lower portion of the body is integrally formed between the first valve depressing portion and the bridge, and between the second valve depressing portion and the bridge. delete The method of claim 1,
Wherein the first and second bent portions are respectively bent upward, and a lower surface thereof faces the upper surface of the bridge. The method of claim 1,
Wherein the first and second bent portions are respectively bent downward, and a lower surface thereof faces a lower surface of the bridge. The method of claim 1,
Wherein the first and second bent portions are respectively bent upward and disposed perpendicularly to the bridge. delete
KR1020150119556A 2015-08-25 2015-08-25 Valve lift device of swing arm type KR101673356B1 (en)

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Application Number Priority Date Filing Date Title
KR1020150119556A KR101673356B1 (en) 2015-08-25 2015-08-25 Valve lift device of swing arm type

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Application Number Priority Date Filing Date Title
KR1020150119556A KR101673356B1 (en) 2015-08-25 2015-08-25 Valve lift device of swing arm type

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KR101673356B1 true KR101673356B1 (en) 2016-11-07

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KR1020150119556A KR101673356B1 (en) 2015-08-25 2015-08-25 Valve lift device of swing arm type

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271306U (en) * 1985-10-23 1987-05-07
JPH06200718A (en) * 1992-11-05 1994-07-19 Henley Mfg Holding Co Inc Rocker arm for internal combustion engine
JP2001355413A (en) * 2000-06-13 2001-12-26 Koyo Seiko Co Ltd Rocker arm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271306U (en) * 1985-10-23 1987-05-07
JPH06200718A (en) * 1992-11-05 1994-07-19 Henley Mfg Holding Co Inc Rocker arm for internal combustion engine
JP2001355413A (en) * 2000-06-13 2001-12-26 Koyo Seiko Co Ltd Rocker arm

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