KR20130030165A - Connecting rod of internal combustion engine - Google Patents

Connecting rod of internal combustion engine Download PDF

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Publication number
KR20130030165A
KR20130030165A KR1020110094083A KR20110094083A KR20130030165A KR 20130030165 A KR20130030165 A KR 20130030165A KR 1020110094083 A KR1020110094083 A KR 1020110094083A KR 20110094083 A KR20110094083 A KR 20110094083A KR 20130030165 A KR20130030165 A KR 20130030165A
Authority
KR
South Korea
Prior art keywords
connecting rod
internal combustion
combustion engine
spring
length
Prior art date
Application number
KR1020110094083A
Other languages
Korean (ko)
Inventor
이무영
Original Assignee
이무영
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 이무영 filed Critical 이무영
Priority to KR1020110094083A priority Critical patent/KR20130030165A/en
Publication of KR20130030165A publication Critical patent/KR20130030165A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/04—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads with elastic intermediate part of fluid cushion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/06—Adjustable connecting-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PURPOSE: A connecting rod of internal combustion engine is provided to relieve impact which explosive power of the internal combustion engine reaches to each tool and the connecting rod and to efficiently deliver by rotatory power of a crank. CONSTITUTION: A connecting rod of internal combustion engine comprises a rod part(22). The rod unit is divided an upper half part(221) and a lower half part(222). The connecting rod has sliding-combine structure within constant movement range of an upper part and a lower part. A spring(45) is installed between the upper part and the lower part. When the internal combustion engine explodes, the upper part instantaneously slides to the lower part and the length of the connecting rod. When explosive power of the internal combustion engine is below predetermined range, the length of the connecting rod. In compression stroke, the length of the connecting rod is not changed.

Description

Connecting Rod of Internal Combustion Engine}

1 is a conceptual diagram of an internal combustion engine

2 is a conceptual diagram of the connecting rod of the present invention

Description of the Related Art

1: piston 2: connecting rod 3: crank

21: small end 22: rod 23: large end

221: upper portion 222: lower portion 4: shock absorber

41: sliding part 42: guide lane 43, 44: stopper

The present invention relates to a connecting rod for connecting a piston and a crank in an internal combustion engine.

1 is a conceptual diagram of an internal combustion engine. In general, the internal combustion engine is a piston (1) is a linear motion by the explosive force generated in the internal combustion engine, the linear motion is transmitted to the rotary motion through the connecting rod and the crank. The problem with these internal combustion engines is that when the piston, the connecting rod and the crank all lie in a straight line, an explosion occurs. As such, the explosive force generated when the piston, the connecting rod and the crank are all in a straight line has a great impact on the piston, the connecting rod and the crank. Part of the explosive force is also dissipated by the impact on the piston, connecting rod and crank. As a result, a serious problem occurs in the durability of the piston, the connecting rod and the crank, and there is a problem in that the explosive force generated in the internal combustion engine cannot be completely transmitted to the rotational force of the crank. To solve this problem, the piston and connecting rod should be out of alignment when the internal combustion engine explodes. However, the explosion is difficult due to the structure of the internal combustion engine when the piston and connecting rod are not in a straight line. An alternative is to reduce the length of the connecting rod instantaneously during explosion of the internal combustion engine so that the piston and connecting rod are not in a straight line when the explosion force of the internal combustion engine is transmitted to the crank.

Korean Patent Office Registration No. 20-0144454 shows a structure in which the connecting rod is divided into two upper and lower parts and a hydraulic device is installed between the two connecting rods. This structure causes the connecting rod and the crank to be out of alignment when the explosive force of the internal combustion engine is transmitted to the crank as the length of the connecting rod is momentarily reduced during the explosion of the internal combustion engine. This structure mitigates the impact of the internal combustion engine's explosive force on each mechanism. However, since the explosive force of the internal combustion engine is absorbed and extinguished by the hydraulic device, the rotational force generated in the crank will not be greater than that of the conventional internal combustion engine. In addition, there is a problem that the length of the connecting rod is reduced in the compression stroke immediately before the explosion of the internal combustion engine.

The purpose of the connecting rod of the present invention is as follows. The first is to reduce the connecting rod during the explosion of the internal combustion engine so that the connecting rod and the crank are out of alignment when the explosive force of the internal combustion engine is transmitted to the crank. The second is that the explosive force of the internal combustion engine is not absorbed and extinguished in the connecting rod, and the explosive force of the internal combustion engine is transmitted completely to the crank.

The connecting rod of the present invention divides the connecting rod into an upper end and a lower end, and installs a shock absorbing device including a spring on the upper end and the lower end. The spring of the impact mitigating device is instantaneously compressed at the time of explosion of the internal combustion engine, and the spring is not compressed at the compression stroke of the internal combustion engine and the explosion stroke in which the explosion force is reduced to a certain degree or less.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to FIG. 2. The connecting rod of the internal combustion engine of the present invention divides the rod part 22 into the upper end portion 221 and the lower end portion 222, and allows the upper end portion and the lower end portion to slide in the predetermined moving range D. To this end, a guide lane 42 is provided at the lower end of the connecting rod in contact with the upper end of the connecting rod, and the sliding part 41 of the upper end is slid on the guide lane. And the stopper 43 is provided at the end of the guide lane 42 of the lower end, and the stopper 44 is provided at the end of the sliding part 41 of the upper end. And the spring 45 is installed in the longitudinal direction on the outer circumferential surface of the lower end 222 between the upper end stopper 44 and the large end 23. The stopper 44 of the upper end and the stopper 43 of the lower end allow the sliding of the upper end to be within a limited movement range D.

2 (A) shows the change in the length of the connecting rod during the explosion of the internal combustion engine, Figure 2 (B) shows the change in the length of the connecting rod during the remaining stroke and the remaining stroke except when the internal combustion engine exploded.

At the time of explosion of the internal combustion engine, the spring is compressed while the upper end of the connecting rod descends (moves to the right in the drawing) with the lowering of the piston 1, and at the same time the length of the connecting rod is reduced. At the moment when the sliding part 41 of the connecting rod is located at the right end of the moving range D, the force of the upper end 221 is transmitted to the lower end 222, and the force transmitted to the lower end is transferred to the crank. The force absorbed by the spring 45 at the time of explosion of the internal combustion engine is transmitted to the lower end 22 of the connecting rod at the moment when the sliding part 41 is located at the right end of the moving range D.

In the explosion stroke and other strokes from the moment when the explosion force of the internal combustion engine falls below a certain range, the upper end of the connecting rod is restored to its original state by the strong force of the spring 45. The important point here is that when the explosion force of the internal combustion engine falls below a certain range, the length of the connecting rod is increased by the expansion of the spring. In addition, the expansion force of the spring is larger than the compression force during the compression stroke so that the length of the connecting rod does not decrease during the compression stroke. To this end, it is necessary for the spring to maintain a strong compression state in the state as shown in FIG. Here, it is possible to operate the spring only when the engine explodes, because the difference in compression force in the internal combustion engine and the compression stroke is very large.

The drawings of the present invention show the use of a compression spring in the shock absorber, the spring can be replaced by a dish spring or a tension spring. Of course, when the shock absorber is replaced with a dish spring or a tension spring, the structure of the shock absorber must be changed so that the dish spring or the tension spring can operate. For example, when a counter spring is used instead of the compression spring of the shock absorber, the structure of the shock absorber must be changed so that the counter spring works. First, a plurality of disc springs may be installed on the outer circumferential surface of the rod part, and the structure of the shock absorber may be changed so that the counter springs function. Then, a circular hollow space may be formed inside the rod portion, and a plurality of small dish springs may be superposed on the empty space, and the structure of the shock absorber may be changed to operate the dish spring.

In the drawings of the present invention, a spring is installed on the outer circumferential surface of the lower end, and the spring may be installed inside the rod part. A circular hollow space may be formed inside the rod portion, and the structure of the shock absorber may be changed to install the spring in the hollow space.

The figure of the present invention shows that the spring is located at the lower end, it is possible to change the structure of the shock absorber so that the spring is located at the upper end.

The connecting rod of the internal combustion engine of the present invention can alleviate the impact of the explosion force of the internal combustion engine on the connecting rod and each mechanism, and at the same time, effectively transmit the explosion force of the internal combustion engine to the rotational force of the crank.

Claims (1)

The present invention separates the rod portion 22 of the connecting rod into the upper half 221 and the lower end 222, and has a structure in which the upper end and the lower end are slidingly coupled within a certain moving range (D), the upper end and the lower end With spring 45 in between; When the internal combustion engine explodes, the length of the connecting rod decreases while the upper end slides to the lower end momentarily, and the length of the connecting rod increases when the explosion force of the internal combustion engine falls below a predetermined range, and the length of the connecting rod in the compression stroke. Is a connecting rod of an internal combustion engine with a characteristic of not changing.
KR1020110094083A 2011-09-16 2011-09-16 Connecting rod of internal combustion engine KR20130030165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110094083A KR20130030165A (en) 2011-09-16 2011-09-16 Connecting rod of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110094083A KR20130030165A (en) 2011-09-16 2011-09-16 Connecting rod of internal combustion engine

Publications (1)

Publication Number Publication Date
KR20130030165A true KR20130030165A (en) 2013-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110094083A KR20130030165A (en) 2011-09-16 2011-09-16 Connecting rod of internal combustion engine

Country Status (1)

Country Link
KR (1) KR20130030165A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165997A (en) * 2016-03-08 2017-09-15 刘文政 A kind of oscillating angle can bidirectional buffering crank and rocker mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107165997A (en) * 2016-03-08 2017-09-15 刘文政 A kind of oscillating angle can bidirectional buffering crank and rocker mechanism

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