KR0122943Y1 - Floating structure of piston pin - Google Patents
Floating structure of piston pinInfo
- Publication number
- KR0122943Y1 KR0122943Y1 KR2019910021766U KR910021766U KR0122943Y1 KR 0122943 Y1 KR0122943 Y1 KR 0122943Y1 KR 2019910021766 U KR2019910021766 U KR 2019910021766U KR 910021766 U KR910021766 U KR 910021766U KR 0122943 Y1 KR0122943 Y1 KR 0122943Y1
- Authority
- KR
- South Korea
- Prior art keywords
- piston pin
- piston
- oil
- supply passage
- pin boss
- Prior art date
Links
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
- F16J1/18—Securing of gudgeon-pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
본 고안은 내연기관에 있어 피스톤(1)의 피스톤 핀보스(2)와 오일링그루브(5)사이에 연통되게 오일공급통로(6)가 신설되어져 엔진동력행정시, 피스톤 핀(4)의 굽힘(Bending)에 의한 굽힘응력이 집중되는 피스톤 핀보스(2)의 내측상부면상에 피스톤(1)이 하강할 때 실린더벽(7)으로부터 긁어모아지는 오일을 상기 오일공급통로(5)를 통해 충분히 공급되게 하여, 피스톤 핀(4)의 상부면이 항상 오일의 두터운 유막층에 의해 부양(Floating)되어져 상기 집중굽힘응력에 의해 유막이 파손되어 금속간 마찰접촉으로 인한 관련부품의 조기마모나 피로파괴를 방지하도록 되어진 피스톤 핀의 부양구조에 관한 것이다.According to the present invention, an oil supply passage (6) is newly established to communicate between the piston pin boss (2) of the piston (1) and the oil ring groove (5) in an internal combustion engine. When the piston 1 descends on the inner upper surface of the piston pin boss 2 where bending stress due to bending is concentrated, the oil scraped from the cylinder wall 7 is sufficiently supplied through the oil supply passage 5. The upper surface of the piston pin 4 is always floated by a thick oil film layer of oil so that the oil film is broken by the concentrated bending stress, which causes premature wear or fatigue failure of related parts due to frictional contact between metals. It relates to a support structure of the piston pin is to prevent the.
Description
제1도는 본 고안에 따른 피스톤의 절개단면도,1 is a cross-sectional view of the piston according to the present invention,
제2도는 제1도의 I-I선 단면도이다.2 is a cross-sectional view taken along the line I-I of FIG.
*도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1:피스톤 2:피스톤 핀보스1: piston 2: piston pin boss
4:피스톤 핀 5:오일링그루브4: Piston pin 5: Oiling groove
6:오일공급통로6: oil supply passage
본 고안은 피스톤 핀의 부양구조에 관한 것으로, 세밀하게는 피스톤의 오일링그루브와 피스톤 핀보스상부면 사이에 오일공급통로가 신설되어져서 이 오일공급통로를 통해 엔진동력행정시 피스톤 핀보스와 피스톤 핀사이에 충분한 오일이 공급되어 항시 두터운 유막층이 형성되도록 된 피스톤 핀의 부양구조에 관한 것이다.The present invention relates to the support structure of the piston pin, and in detail, an oil supply passage is newly established between the oil ring groove of the piston and the upper surface of the piston pin boss, so that the piston pin boss and the piston when the engine power is operated through the oil supply passage. It relates to the support structure of the piston pin so that sufficient oil is supplied between the pins so that a thick oil layer is always formed.
일반적으로 종래의 내연기관에서는 엔진동력행정시에 연소실의 고압력가스에 의한 피스톤의 운동방향과 정지된 상태로 놓인 커넥팅로드의 관성운동방향이 서로 상반되어져 있기 때문에, 이 두부품을 연결하는 피스톤 핀에 굽힘(Bending)이 유발되어진다.In general, in the internal combustion engine, since the direction of movement of the piston caused by the high pressure gas of the combustion chamber and the direction of inertia of the connecting rod placed in the stopped state are opposite to each other in the engine power stroke, the piston pin connecting the two parts Bending is caused.
따라서 피스톤 핀이 삽입·장착되어 지지되는 피스톤 핀보스도 피스톤 핀의 굽힘변형에 따른 굽힘응력을 집중적으로 받게되어 자주 피스톤 핀보스와 피스톤 핀사이의 접촉면상의 유막이 끊어져 급속간의 마찰접촉으로 인한 부품의 마모가 발생될 뿐만 아니라, 장시간에 걸쳐 반복해서 집중굽힘응력을 받게 되면 피스톤 핀보스의 내측단상부면 모서리부분이나 이에 접한 피스톤 핀상에 크랙(Crack)이 형성되면서 피로파괴를 가져오게 되는 문제점을 보여왔다.Therefore, the piston pin boss, which is supported by inserting and mounting the piston pin, receives the bending stress intensively due to the bending deformation of the piston pin and frequently breaks the oil film on the contact surface between the piston pin boss and the piston pin. In addition to abrasion, repeated stresses over a long period of time have been shown to cause fatigue failure as cracks are formed on the inner edges of the piston pin bosses or on the piston pins adjacent to them. .
이에 본 고안은 상기와 같은 제반문제점을 해결하기 위해 안출된 것으로서, 피스톤의 피스톤 핀보스와 이 피스톤 핀보스에 끼워지지된 피스톤 핀사이의 상부접촉면상에 충분한 오일이 공급되어, 이때 형성된 두터운 유막층에 의해 피스톤 핀이 부양(Floating)되어져 엔진동력행정시, 상기 유막층에 의해 두부품사이의 직접적인 금속접촉이 방지되도록 된 피스톤 핀의 부양구조를 제공하는데 그 목적이 있다.The present invention has been devised to solve the above problems, sufficient oil is supplied on the upper contact surface between the piston pin boss of the piston and the piston pin fitted to the piston pin boss, the thick film layer formed at this time It is an object of the present invention to provide a floating structure of a piston pin in which the piston pin is floated so that direct metal contact between the two parts is prevented by the oil layer during the engine power stroke.
상기와 같은 목적을 달성하기 위해 본 고안은 피스톤의 오일링그루브와 피스톤 핀보스 상부면사이에 오일공급통로가 신설되어진 구조로서, 엔진동력행정에서 피스톤이 하강하면서 실린더벽에 묻은 오일이 오일링에 의해 긁어모아져, 이 오일공급통로를 통해 피스톤 핀보스의 내측상부면으로 공급되면, 이때 형성된 유막층에 의해 피스톤 핀의 상부면이 부양되어진다.In order to achieve the above object, the present invention has a structure in which an oil supply passage is newly established between the oil ring groove of the piston and the upper surface of the piston pin boss, and the oil on the cylinder wall as the piston descends in the engine power stroke is applied to the oil ring. When it is scraped off and supplied to the inner upper surface of the piston pin boss via this oil supply passage, the upper surface of the piston pin is supported by the oil film layer formed at this time.
이하 본 고안을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 고안에 따른 피스톤의 절개단면도이고, 제2도는 제1도의 I-I선 단면도로서, 본 고안은 피스톤(1)과 커넥팅로드(3)를 연결하기 위해 피스톤 핀보스(2)에 끼워장착된 피스톤 핀(4)의 상부면상에 충분한 오일이 공급되도록 오일링그루브(Oil Ring Groove,5)안쪽면과 상기 피스톤 핀보스(2)의 내측상부면과 연통되게 오일공급통로(6)가 신설되어진 구조로서, 엔진동력행정시 피스톤(1)이 하강되면서 실린더벽(7)에 뿌려진 오일이 오일링(8)에 의해 긁어모아져 오일링그루브(5)상에 괴면, 이 오일은 상기 오일공급통로(6)를 통해 피스톤 핀(4)의 상부면상에 공급되어 두꺼운 유막층을 형성하게 된다.1 is a cross-sectional view of the piston according to the present invention, Figure 2 is a cross-sectional view of the line II of Figure 1, the present invention is fitted to the piston pin boss (2) for connecting the piston (1) and the connecting rod (3) The oil supply passage 6 is newly established to communicate with the inner surface of the oil ring groove 5 and the inner upper surface of the piston pin boss 2 so that sufficient oil is supplied on the upper surface of the piston pin 4. In this structure, the oil sprayed on the cylinder wall (7) is raked on the oil ring groove (5) as the piston (1) is lowered during the engine power stroke, and the oil is fed into the oil supply passage. It is supplied through 6 to the upper surface of the piston pin 4 to form a thick oil film layer.
따라서, 상기와 같은 구조로 된 본 고안은 엔진동력행정시 피스톤(1)과 커넥팅로드(3)의 상반된 운동방향에 의해 굽힘(Bending)이 형성된 피스톤 핀(4)의 상부면과 상기 피스톤 핀보스(2)의 내측상부면사이에 오일링그루브(5)로부터 주기적으로 오일이 오일공급통로(6)를 통해 충분히 공급되어져 양부품사이에 충분한 유막이 형성되어지기 때문에, 피스톤 핀(4)의 집중굽힘응력이 피스톤 핀보스(2)에 작용되어도 직접적인 금속간 접촉마찰이 유발되지 않도록 되어진다.Therefore, the present invention having the structure as described above is the piston pin boss and the upper surface of the piston pin (4) formed bending by the opposite direction of movement of the piston (1) and the connecting rod (3) during the engine power stroke Concentration of the piston pin 4 since oil is sufficiently supplied periodically from the oil ring groove 5 between the inner upper surfaces of (2) through the oil supply passage 6 to form a sufficient oil film between both parts. Even when bending stress is applied to the piston pin boss 2, direct intermetallic contact friction is not caused.
그러므로 상기와 같은 본 고안은 엔진동력행정시 피스톤 핀보스와 피스톤 핀사이의 상부접촉면상에 항시 유막층이 형성되어져서, 두부품간의 직접적인 금속접촉에 따른 부품마모나 피로파괴를 예방하여 부품의 수명을 연장하도록 되어지는 잇점이 있다.Therefore, the present invention as described above, the oil film layer is always formed on the upper contact surface between the piston pin boss and the piston pin during the operation of the engine power, to prevent component wear or fatigue failure due to direct metal contact between the two parts life of parts There is an advantage to extending this.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910021766U KR0122943Y1 (en) | 1991-12-09 | 1991-12-09 | Floating structure of piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910021766U KR0122943Y1 (en) | 1991-12-09 | 1991-12-09 | Floating structure of piston pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930014805U KR930014805U (en) | 1993-07-27 |
| KR0122943Y1 true KR0122943Y1 (en) | 1998-08-17 |
Family
ID=19323882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910021766U KR0122943Y1 (en) | 1991-12-09 | 1991-12-09 | Floating structure of piston pin |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0122943Y1 (en) |
-
1991
- 1991-12-09 KR KR2019910021766U patent/KR0122943Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930014805U (en) | 1993-07-27 |
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