KR20010066428A - Piston pin for engine - Google Patents

Piston pin for engine Download PDF

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Publication number
KR20010066428A
KR20010066428A KR1019990068145A KR19990068145A KR20010066428A KR 20010066428 A KR20010066428 A KR 20010066428A KR 1019990068145 A KR1019990068145 A KR 1019990068145A KR 19990068145 A KR19990068145 A KR 19990068145A KR 20010066428 A KR20010066428 A KR 20010066428A
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KR
South Korea
Prior art keywords
pin
piston
insertion hole
diameter
engine
Prior art date
Application number
KR1019990068145A
Other languages
Korean (ko)
Inventor
김동근
Original Assignee
이계안
현대자동차주식회사
류정열
기아자동차주식회사
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Application filed by 이계안, 현대자동차주식회사, 류정열, 기아자동차주식회사 filed Critical 이계안
Priority to KR1019990068145A priority Critical patent/KR20010066428A/en
Publication of KR20010066428A publication Critical patent/KR20010066428A/en

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Classifications

    • 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
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof
    • 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
    • F02F3/00—Pistons 
    • F02F3/0076—Pistons  the inside of the pistons being provided with ribs or fins
    • 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
    • F16C7/02—Constructions of connecting-rods with constant length
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/80—Positive connections with splines, serrations or similar profiles to prevent movement between joined parts

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

Abstract

PURPOSE: An engine piston pin is provided to reduce the whole weight of a piston while maintaining the stiffness of the piston for reducing the inertial weight, thereby minimizing the power loss due to the inertia when the piston reciprocates and reducing the decrease of the fuel ratio. CONSTITUTION: An engine piston pin includes a first pin(3) formed with a contact part(1) for contacting an inner diameter(D1) of a small diameter part of a connecting rod and a holding part(2) formed at a side of the contact part with a diameter(D2) smaller than the contact part, an insertion hole(4) formed in a piston(55) facing the holding part to be inserted by the holding part, and a second pin(5) inserted in an insertion hole and closely contacting the first pin by a coupling element, wherein the coupling element is formed in the contact part and has an insertion hole to be inserted by the second pin and splines formed in contact parts of the insertion hole and the second pin for rotating in association with the first and the second pin.

Description

엔진용 피스톤 핀{PISTON PIN FOR ENGINE}Piston pin for engine {PISTON PIN FOR ENGINE}

본 발명은 엔진용 피스톤핀에 관한 것으로서, 보다 상세하게는 중량을 감소시킴과 아울러 피스톤에서 인가되는 하중을 견딜 수 있도록 구성된 엔진용 피스톤 핀에 관한 것이다.The present invention relates to an engine piston pin, and more particularly to an engine piston pin configured to withstand weight applied to the piston while reducing the weight.

일반적으로, 자동차에 장착되는 엔진은 내연 기관으로서, 연소실에서의 폭발력을 피스톤으로 전달하고, 상기한 피스톤이 폭발력에 의해 팽창하는 것을 회전 운동으로 변환시켜 구동력을 사용하게 된다.In general, an engine mounted on an automobile is an internal combustion engine, which transmits an explosive force in a combustion chamber to a piston, and converts the expansion of the piston by the explosive force into a rotational motion to use a driving force.

상기한 폭발력을 구동력으로 변환시키기 위해서는, 피스톤, 커넥팅 로드 및 크랭크 축등이 필요한 바, 이는 도3에 도시된 바와 같이 밸런스(50)가 설치된 크랭크축(51)과, 상기한 크랭크축(51)에 대경부(52)가 결합되고 그 대향단에 소경부(53)가 형성된 컨넥팅 로드(54)와, 상기한 소경부(53)에 끼워짐과 아울러 상기한 피스톤(55)의 삽입공(56)에 결합되어 컨넥팅 로드(54)와 피스톤(55)을 연결하는 피스톤 핀(57)으로 이루어져 있다.In order to convert the explosive force into a driving force, a piston, a connecting rod, a crankshaft, and the like are required. As shown in FIG. 3, the crankshaft 51 provided with the balance 50 and the crankshaft 51 are provided. The connecting rod 54 having the large diameter portion 52 coupled thereto and the small diameter portion 53 formed at the opposite end thereof, and the insertion hole 56 of the piston 55 being fitted to the small diameter portion 53. It is composed of a piston pin 57 is coupled to the connecting rod 54 and the piston (55).

여기서, 상기한 피스톤(55)이 설치된 부분은 실린더인 바, 상기한 실린더로 흡기 또는 혼합기가 유입되는 것을 차단/개방하도록 흡, 배기 밸브(I, E)가 설치되어 있고, 상기한 실린더의 상측에는 연소실이 구성되어 있다.Here, the part in which the piston 55 is installed is a cylinder, and the intake and exhaust valves I and E are provided to block / open the intake or mixer from entering the cylinder, and the upper side of the cylinder is provided. The combustion chamber is comprised.

특히, 상기한 피스톤 핀(57)은 연소실에서의 폭발력에 의한 피스톤(55)의 왕복 운동 및 이에 따른 힘을 견딜 수 있을 정도의 직경 및 두께를 가져야 한다.In particular, the piston pin 57 should have a diameter and thickness sufficient to withstand the reciprocating motion of the piston 55 and the force according to the explosion force in the combustion chamber.

예를 들면, 상기한 피스톤 핀(57)의 직경D은 800∼1000cc 일 경우, 통상적으로 17∼18mm 이고, 1300∼1500cc 일경우에는 18∼20mm 정도를 유지해야, 상기한 피스톤(55)에 인가되는 폭발력을 견딜 수 있게 된다.For example, when the diameter D of the piston pin 57 is 800 to 1000 cc, the diameter D is generally 17 to 18 mm, and when the diameter of the piston pin 57 is 1300 to 1500 cc, the diameter D must be maintained at about 18 to 20 mm to be applied to the piston 55. Will be able to withstand the explosive power.

물론, 상기한 피스톤 핀(57)의 직경D은 전체적으로 동일한 직경을 갖도록 구성되어 있다.Of course, the diameter D of the piston pin 57 is configured to have the same diameter as a whole.

그러나, 상기한 바와 같이 피스톤 핀이 피스톤에 인가되는 폭발력을 견딜 수 있도록, 피스톤 핀의 직경을 전체적으로 동일하도록 구성함과 아울러 비교적 두껍게 두께를 형성하게 되면, 상기한 피스톤 핀이 피스톤과 함께 왕복 운동하는 부품이기 때문에, 피스톤의 전체 관성 중량이 커지게 되고, 이로 인해 구동력이 저하되는 문제점이 있다.However, as described above, when the piston pin is configured to have the same diameter as a whole and relatively thick, so that the piston pin can withstand the explosive force applied to the piston, the piston pin reciprocates with the piston. Since it is a component, the total inertia weight of the piston becomes large, which causes a problem that the driving force is lowered.

즉, 상기한 피스톤의 관성 중량이 커지게 되면, 피스톤의 왕복 운동 시 관성에 의한 동력 손실이 커지게 되고, 이로 인해 전체적인 구동력의 손실이 커지게 됨으로써, 구동력 저하 및 연비 저하가 발생되는 것이다.That is, when the inertial weight of the piston increases, power loss due to inertia increases during reciprocating movement of the piston, thereby increasing the loss of the overall driving force, thereby lowering driving force and lowering fuel economy.

따라서, 본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로서, 피스톤 핀의 강성을 유지시키면서 피스톤 핀의 중량을 감소시켜 피스톤의 전체적인 관성 중량을 감소시킬 수 있는 엔진용 피스톤 핀을 제공함에 있다.Accordingly, an object of the present invention is to provide a piston pin for an engine that can reduce the overall inertia weight of the piston by reducing the weight of the piston pin while maintaining the rigidity of the piston pin.

상기한 목적을 실현하기 위하여 본 발명은 컨넥팅 로드의 소경부 내경에 밀착되도록 접촉부가 형성되고 그 일측에 접촉부보다 직경이 작게 걸림부가 형성된 제1핀과, 상기한 걸림부가 삽입되도록 피스톤에 대향 형성된 삽입공과, 상기한 삽입공에 끼워짐과 아울러 상기한 제1핀에 밀착 삽입되도록 결합 수단으로 결합되어 연동하는 제2핀으로 구성함을 특징으로 한다.In order to realize the above object, the present invention provides a contact portion formed to be in close contact with the inner diameter of the small diameter portion of the connecting rod, and a first pin having a smaller diameter than a contact portion formed at one side thereof, and the piston formed so as to be inserted into the engaging portion. The insertion hole and the second pin is coupled to the insertion hole and coupled with the coupling means to be inserted in close contact with the first pin.

도1은 본 발명에 따른 엔진용 피스톤 핀의 설치 상태를 도시한 부분 확대 단면도,1 is a partially enlarged cross-sectional view showing an installation state of an engine piston pin according to the present invention;

도2는 도1에서 피스톤 핀을 도시한 분해 사시도,FIG. 2 is an exploded perspective view of the piston pin in FIG. 1;

도3은 일반적인 자동차에 사용되는 엔진용 피스톤 및 컨넥팅 로드의 설치 상태를 도시한 개략 사시도.Figure 3 is a schematic perspective view showing the installation state of the piston and the connecting rod for the engine used in a typical vehicle.

＊ 도면의 주요 부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing

1: 접촉부 2: 걸림부1: contact part 2: locking part

3: 제1핀 4: 삽입공3: first pin 4: insertion hole

5: 제2핀 6: 끼움공5: pin 2 6: fitting hole

7: 스플라인 8: 관통공7: Spline 8: Through Hole

53: 소경부 54: 컨넥팅 로드53: small diameter portion 54: connecting rod

55: 피스톤55: piston

도1과 도2는 본 발명에 따른 엔진용 피스톤 핀을 도시한 조립 단면도와 분해 사시도로서, 컨넥팅 로드(54)의 소경부(53) 내경에 적합하도록 직경 D1인 접촉부(1)가형성되고 그 일측에 접촉부(1)보다 직경이 작을 뿐만 아니라 종래 피스톤핀(57)의 직경D보다 작게 직경 D2로 걸림부(2)가 형성된 제1핀(3)과, 상기한 걸림부(2)가 삽입되도록 피스톤(55)에 대향 형성된 삽입공(4)과, 상기한 삽입공(4)에 끼워짐과 아울러 상기한 제1핀(3)에 밀착 삽입되도록 결합 수단으로 결합되어 연동하는 제2핀(5)으로 구성되어 있다.1 and 2 are assembled cross-sectional views and exploded perspective view of the piston pin for the engine according to the present invention, the contact portion 1 having a diameter D1 is formed to fit the inner diameter of the small diameter portion 53 of the connecting rod 54 The first pin (3) and the locking portion (2) having a smaller diameter than the contact portion (1) on one side and a locking portion (2) having a diameter D2 smaller than the diameter D of the conventional piston pin (57) Insertion hole (4) formed opposite to the piston (55) to be inserted, and the second pin coupled to the interlocking means to be inserted into the insertion hole (4) and to be inserted in close contact with the first pin (3) It consists of (5).

상기한 결합 수단은 상기한 접촉부(1)에 형성됨과 아울러 상기한 제2핀(5)이 끼워지도록 형성된 끼움공(6)과, 상기한 끼움공(6)과 제2핀(5)의 접촉 부분에 형성되어 제1, 2핀(3, 5)이 같이 회전하도록 구성된 스플라인(7)으로 이루어져 있다.The coupling means is formed in the contact portion (1) and the fitting hole (6) formed so that the second pin (5) is fitted, the contact of the fitting hole (6) and the second pin (5) The spline 7 is formed in the portion and configured to rotate the first and second pins 3 and 5 together.

즉, 상기한 제1핀(3)의 걸림부(2)와 제2핀(5) 그리고 접촉부(1)에 형성된 끼움공(6)의 직경 및 내경은 서로 거의 동일하게 되는 것이다.That is, the diameter and the inner diameter of the engaging portion 2 and the second pin 5 and the fitting hole 6 formed in the contact portion 1 of the first pin 3 are substantially the same.

물론, 상기한 제1, 2핀(3, 5)에는 핀의 중량을 감소시킬 수 있을 뿐만 아니라 피스톤(55)에 인가되는 폭발력을 견딜 수 있도록 제1, 2핀(3, 5)의 두께 D3를 형성하도록 관통공(8)이 형성되어 있다.Of course, the first and second pins 3 and 5 may not only reduce the weight of the pins, but also the thickness D3 of the first and second pins 3 and 5 to withstand the explosive force applied to the piston 55. The through hole 8 is formed to form a.

상기한 바와 같은 본 발명의 작용 효과를 설명하면 작업자가 피스톤(55)과 컨넥팅 로드(54)를 연결하기 위하여, 상기한 컨넥팅 로드(54)의 소경부(53)에 제1핀(3)의 접촉부(1)를 끼운 상태에서, 상기한 컨넥팅 로드(54)의 소경부(53)를 피스톤(55)의 내부에 끼우게 된다.Referring to the operation and effect of the present invention as described above, in order for the operator to connect the piston 55 and the connecting rod 54, the first pin (3) to the small diameter portion 53 of the connecting rod 54 In the state in which the contact portion 1 of) is inserted, the small diameter portion 53 of the connecting rod 54 is fitted inside the piston 55.

제1핀(3)과 소경부(53)가 피스톤(55)의 내부에 위치되면, 상기한 제1핀(3)의 걸림부(2)를 피스톤(55)의 삽입공(4)에 끼우게 된다.When the first pin 3 and the small diameter portion 53 are positioned inside the piston 55, the locking portion 2 of the first pin 3 is inserted into the insertion hole 4 of the piston 55. You will cry.

여기서, 상기한 제1핀(3)의 전체 길이 L은 피스톤(55)의 저면에 형성된 구멍의 직경 L'와 동일하기 때문에, 상기한 컨넥팅 로드(54)의 소경부(53)에 제1핀(3)을 끼운 상태에서 피스톤(55) 내부로 삽입 가능하게 된다.Here, since the total length L of the first pin 3 is the same as the diameter L 'of the hole formed in the bottom surface of the piston 55, the first small diameter portion 53 of the connecting rod 54 is first. The pin 3 can be inserted into the piston 55 while being inserted.

제1핀(3)이 결합된 상태인 컨넥팅 로드(54)의 소경부(53)가 피스톤(55) 내부로 삽입되면, 상기한 제2핀(5)을 대향측 삽입공(4)을 통해 삽입시킴과 아울러 상기한 접촉부(1)의 끼움공(6)에 삽입시키게 된다.When the small diameter portion 53 of the connecting rod 54 in which the first pin 3 is coupled is inserted into the piston 55, the second pin 5 is inserted into the opposite side insertion hole 4. In addition to the insertion through the insertion hole (6) of the contact portion (1).

제2핀(5)이 제1핀(3)의 끼움공(6)에 삽입되면 제1, 2핀(3, 5)이 결합된 상태가 되는 바, 이 상태에서 제1, 2핀(3, 5)은 스플라인(7)으로 결합되어 있기 때문에, 연동할 뿐만 아니라 스플라인(7)으로 밀접하게 연결되어 있기 때문에 피스톤(55)으로부터 인가되는 하중 분산이 제1, 2핀(3, 5) 사이에서 효율적으로 일어나게 된다.When the second pin 5 is inserted into the fitting hole 6 of the first pin 3, the first and second pins 3 and 5 are coupled to each other. In this state, the first and second pins 3 , 5) is coupled to the spline (7), not only interlock but also closely connected to the spline (7), so that the load distribution applied from the piston (55) between the first and second pins (3, 5) It happens efficiently at

제1, 2핀(3, 5)이 결합되면 상기한 피스톤(55)의 삽입공(4)에 걸리게 되는 바, 상기한 피스톤(55)과 컨넥팅 로드(54)가 연결되는 것이다.When the first and second pins 3 and 5 are coupled to the insertion holes 4 of the piston 55, the piston 55 and the connecting rod 54 are connected to each other.

상기한 바와 같이 종래 컨넥팅 로드(54)의 소경부(53)를 변경하지 않고도, 상기한 제1핀(3)의 접촉부(1)에 끼움 결합시켜 컨넥팅 로드(54)와 피스톤(55)을 연결하게 되면, 상기한 걸림부(2) 및 제2핀(5)의 직경D2이 접촉부(1)의 직경D1보다 작은 만큼 피스톤 핀의 중량을 저감시킬 수 있게 된다.As described above, the connecting rod 54 and the piston 55 are fitted to the contact portion 1 of the first pin 3 without changing the small diameter portion 53 of the conventional connecting rod 54. When connecting the diameter, the diameter of the engaging portion (2) and the second pin (5) is smaller than the diameter D1 of the contact portion (1) it is possible to reduce the weight of the piston pin.

피스톤 핀의 중량이 감소되면, 상기한 감소분만큼 피스톤 핀 즉, 피스톤(55) 전체의 중량이 가볍게 됨으로써, 피스톤(55)의 왕복 운동 시 관성 중량이 감소되어 이로 인한 동력의 손실을 보다 작게 할 수 있는 것이다.When the weight of the piston pin is reduced, the weight of the piston pin, i.e., the entire piston 55, is lightened by the above-mentioned reduction, so that the inertia weight is reduced during the reciprocating motion of the piston 55, thereby reducing the loss of power. It is.

물론, 상기한 제1핀(3)의 걸림부(2)와 제2핀(5)의 직경 및 두께는 피스톤(55)으로부터의 하중을 견딜 수 있을 정도로 설정하게 된다.Of course, the diameter and thickness of the engaging portion 2 and the second pin 5 of the first pin 3 is set to withstand the load from the piston (55).

이상과 같이 본 발명은 컨넥팅 로드의 소경부에 끼워져 밀착되도록 접촉부가 형성되고, 이보다 직경이 작은 걸림부가 형성된 제1핀과, 상기한 제1핀에 끼움 결합되는 제2핀으로 피스톤 핀을 구성함으로써, 피스톤의 전체적인 중량을 감소시켜 관성 중량을 감소시킬 수 있고, 이로 인해 동력 손실을 최소화할 수 있는 잇점이 있는 것이다.As described above, the present invention constitutes a piston pin with a first pin having a contact portion formed to be fitted into a small diameter portion of the connecting rod, and having a smaller diameter than the first pin, and a second pin fitted to the first pin. Thereby, the inertia weight can be reduced by reducing the overall weight of the piston, which has the advantage of minimizing power loss.

Claims (2)

컨넥팅 로드의 소경부 내경에 밀착되도록 접촉부가 형성되고 그 일측에 접촉부보다 직경이 작게 걸림부가 형성된 제1핀과, 상기한 걸림부가 삽입되도록 피스톤에 대향 형성된 삽입공과, 상기한 삽입공에 끼워짐과 아울러 상기한 제1핀에 밀착 삽입되도록 결합 수단으로 결합되어 연동하는 제2핀으로 구성함을 특징으로 하는 엔진용 피스톤 핀.A first pin having a contact portion formed to be in close contact with the inner diameter of the connecting rod and having a smaller diameter than the contact portion at one side thereof, a insertion hole formed opposite to the piston to insert the engaging portion, and fitted into the insertion hole And the piston pin for the engine, characterized in that composed of a second pin coupled to the coupling means to be interlocked so as to be in close contact with the first pin. 제1항에 있어서,The method of claim 1, 상기한 결합 수단은 상기한 접촉부에 형성됨과 아울러 상기한 제2핀이 끼워지도록 형성된 끼움공과, 상기한 끼움공과 제2핀의 접촉 부분에 형성되어 제1, 2핀이 같이 회전하도록 구성된 스플라인으로 구성함을 특징으로 하는 엔진용 피스톤 핀.The coupling means includes a fitting hole formed in the contact portion and the second pin is fitted into the contact hole, and a spline formed in the contact portion between the fitting hole and the second pin so that the first and second pins rotate together. Piston pin for the engine, characterized in that.
KR1019990068145A 1999-12-31 1999-12-31 Piston pin for engine KR20010066428A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105604915A (en) * 2016-02-19 2016-05-25 珠海格力节能环保制冷技术研究中心有限公司 Piston, compressor provided with same and machining method of piston

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174090A (en) * 1992-12-08 1994-06-21 Toyota Motor Corp Position pin support structure
KR19990031918U (en) * 1997-12-31 1999-07-26 정몽규 Split Piston Pin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06174090A (en) * 1992-12-08 1994-06-21 Toyota Motor Corp Position pin support structure
KR19990031918U (en) * 1997-12-31 1999-07-26 정몽규 Split Piston Pin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105604915A (en) * 2016-02-19 2016-05-25 珠海格力节能环保制冷技术研究中心有限公司 Piston, compressor provided with same and machining method of piston

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