JPH0324938Y2 - - Google Patents
Info
- Publication number
- JPH0324938Y2 JPH0324938Y2 JP1985022646U JP2264685U JPH0324938Y2 JP H0324938 Y2 JPH0324938 Y2 JP H0324938Y2 JP 1985022646 U JP1985022646 U JP 1985022646U JP 2264685 U JP2264685 U JP 2264685U JP H0324938 Y2 JPH0324938 Y2 JP H0324938Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- piston pin
- small end
- piston
- pin boss
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はエンジンのピストンピンボス部構造に
関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a piston pin boss structure of an engine.
従来の内燃機関等の小端部をテーパ状にしたコ
ンロツドのピストンの構造を第３図に示す。
FIG. 3 shows the structure of a conrod piston with a tapered small end for a conventional internal combustion engine.
図で１はコンロツド、２はピストン、２ａはピ
ストンピンボス、３はコンロツド小端ブツシユ、
４はピストンピンである。 In the figure, 1 is the connecting rod, 2 is the piston, 2a is the piston pin boss, 3 is the connecting rod small end bushing,
4 is a piston pin.
コンロツド１が第４図に示すように揺動した場
合、コンロツド１のＡ位置、Ｂ位置及びＣ位置に
おけるＸ−Ｘ断面は第５図の様な形状を示す。こ
のため従来のピストンのピストンピンボス２ａの
形状は平面で設計されていたためＢ位置およびＣ
位置での最大幅部２ｂとの干渉をさけるため第５
図に示すようにコンロツド小端部との間隙を大き
くとつていた。その為最も荷重を受けるピストン
ピンボスの中心線位置での強度を著しく落とす結
果となつていた。 When the connecting rod 1 swings as shown in FIG. 4, the X--X cross section of the connecting rod 1 at positions A, B, and C shows a shape as shown in FIG. For this reason, the shape of the piston pin boss 2a of the conventional piston was designed to be flat, so the B position and the C position
In order to avoid interference with the maximum width portion 2b at the fifth
As shown in the figure, there was a large gap between the small end of the connecting rod and the small end. As a result, the strength at the centerline position of the piston pin boss, which receives the most load, was significantly reduced.
本考案の目的は前記従来装置の欠点を解消し、
ピストンピンボス中心線位置での強度を確保し、
且コンロツドとの干渉を避けることのできる内燃
機関のピストンピンボス部構造と提供するにあ
る。
The purpose of the present invention is to eliminate the drawbacks of the conventional device,
Ensures strength at the piston pin boss centerline position,
Another object of the present invention is to provide a piston pin boss structure for an internal combustion engine that can avoid interference with a connecting rod.
本考案の内燃機関のピストンピンボス部構造
は、第５図のＢ位置及びＣ位置の最大幅の部分と
ピストンピンボス部２a′との干渉をさけるため第
１図に示すように必要最小限の範囲の肉を落しピ
ストンピンボス中心部での強度の向上をはかつた
ものである。
The structure of the piston pin boss portion of the internal combustion engine of the present invention has a minimum necessary range as shown in FIG. 1 in order to avoid interference between the maximum width portions at positions B and C in FIG. The thickness of the piston pin has been reduced to improve the strength at the center of the piston pin boss.
第３図はコンロツトの小端部をテーパ状にした
場合のピストンピン中心を含む断面の構成図、第
４図はコンロツド揺動時のＡ，Ｂ，Ｃ各位置、第
１図はコンロツドのＡ，Ｂ，Ｃ各位置におけるコ
ンロツド小端部の形状を示す。
Figure 3 is a configuration diagram of a cross section including the center of the piston pin when the small end of the stove is tapered, Figure 4 is the A, B, and C positions when the stove swings, and Figure 1 is the A of the stove. , B, and C show the shape of the connecting rod small end.
第１〜４図において、１はコンロツド、２はピ
ストン、２a′はピストンピンボス部、３はコンロ
ツド小端部で第４図に示すように端面２b′がコン
ロツドの揺動に応じたテーパ面に形成される、４
はピストンピンである、コンロツド１にはコンロ
ツド小端ブツシユ３が打込まれており、ピストン
２のピストンピンボス部２a′とはピストンピン４
を介して結合され揺動する。 In Figures 1 to 4, 1 is the connecting rod, 2 is the piston, 2a' is the piston pin boss, and 3 is the small end of the connecting rod, and as shown in Figure 4, the end surface 2b' is a tapered surface that corresponds to the swinging of the connecting rod. formed, 4
is a piston pin. A connecting rod small end bushing 3 is driven into the connecting rod 1, and the piston pin boss portion 2a' of the piston 2 is the piston pin 4.
are connected and oscillate through.
次に前記実施例の作用について説明する。 Next, the operation of the above embodiment will be explained.
第４図に示すようにコンロツド１はピストンピ
ン４を中心としてＡ−Ｂ−Ａ−Ｃ−Ａの順に揺動
する。コンロツド１の小端部はテーパ形状のため
Ａ，Ｂ，Ｃ位置において第５図断面Ｘ−Ｘに示す
ような形状となる。 As shown in FIG. 4, the connecting rod 1 swings about the piston pin 4 in the order of A-B-A-C-A. Since the small end of the connecting rod 1 is tapered, it has a shape as shown in cross section XX in FIG. 5 at positions A, B, and C.
従つて従来例ではコンロツド１との干渉を避け
るために荷重の最もかかるピストンピン４の中心
線位置の強度を犠牲にして第５図のようにコンロ
ツドボス部端面は逃げを多くした直線状２ｂとし
ていた。 Therefore, in the conventional example, in order to avoid interference with the connecting rod 1, the strength at the center line position of the piston pin 4 where the load is most applied was sacrificed, and the end face of the connecting rod boss part was made into a straight line 2b with a large relief as shown in Fig. 5. .
本考案に係る内燃機関のピストンピンボス部構
造は、その端面を第１図に示すようにピストンの
中心線位置で肉厚が最大となるようにし、かつ
Ａ，Ｂ，Ｃ各位置におけるコンロツド１の小端部
の最大幅との干渉を防ぐ形状２b′にすることでピ
ストンピンボス部の強度増大をねらつたものであ
る。 The structure of the piston pin boss portion of an internal combustion engine according to the present invention has its end face having the maximum wall thickness at the center line position of the piston, as shown in FIG. The aim is to increase the strength of the piston pin boss by forming the shape 2b' to prevent interference with the maximum width of the small end.
前述のとおり、本考案の実施例では第１図のよ
うなピストンピンボス部２a′の端面２b′をコンロ
ツドの揺動に応じたテーパ面に形成し、ピストン
ピンの中心線位置で肉厚が最大となるようにし、
かつＡ，Ｂ，Ｃ各位置におけるコンロツド１の小
端部の最大幅との干渉を防ぐ形状２b′にしたの
で、ピスボス部の強度を増大させることができ
た。
As mentioned above, in the embodiment of the present invention, the end surface 2b' of the piston pin boss part 2a' as shown in FIG. so that
In addition, since the shape 2b' prevents interference with the maximum width of the small end of the connecting rod 1 at each position A, B, and C, the strength of the piston boss can be increased.
又上記実施例では第２図に示す様にピンボス部
２a′の面積増加分（図中網目線で示された部分）
のために同一条件のもとでピストンピン４の面圧
を従来形にくらべ25％も減少させることができ
た。 In addition, in the above embodiment, as shown in FIG. 2, the increase in area of the pin boss portion 2a' (portion indicated by mesh lines in the figure)
Therefore, under the same conditions, the surface pressure on the piston pin 4 could be reduced by 25% compared to the conventional type.
第１図は本考案に係る実施例に対する第４図の
Ｘ−Ｘ断面図、第２図は同実施例に対する第３図
のＹ−Ｙ断面図、第３図はコンロツト小端部をテ
ーパ状にした場合のピストンピン中心線を含む垂
直断面の構造説明図、第４図はコンロツドの揺動
時のＡ，Ｂ，Ｃ各位置図、第５図は従来例に対す
る第４図のＸ−Ｘ断面図である。
１……コンロツドの小端部、２……ピストン、
２a′……ピストンピンボス、２b′……コンロツド
の小端部に対応するピストンピンボス部テーパ
面。
Fig. 1 is a cross-sectional view taken along the line XX in Fig. 4 for an embodiment of the present invention, Fig. 2 is a sectional view taken along the Y-Y line in Fig. 3 for the same embodiment, and Fig. 3 shows the small end of the stove being tapered. Fig. 4 is a diagram showing the positions of A, B, and C when the connecting rod is oscillated, and Fig. 5 is the X-X of Fig. 4 for the conventional example. FIG. 1... Small end of conrod, 2... Piston,
2a'...Piston pin boss, 2b'...Tapered surface of the piston pin boss corresponding to the small end of the connecting rod.
Claims (1)
ツドがピストンピンを介してピストンと係合され
たものにおいて、ピストンピンボスのコンロツド
小端部に対向する両端面を、コンロツドの揺動に
より形成されるコンロツド小端部側面の包絡面か
ら一定距離をへだてた曲面に形成したことを特徴
とする内燃機関のピストンピンボス部構造。 In a device in which a connecting rod with a tapered small end is engaged with a piston via a piston pin, both end surfaces of the piston pin boss facing the small end of the connecting rod are formed by swinging of the connecting rod. A piston pin boss structure for an internal combustion engine, characterized in that it is formed into a curved surface that is separated by a certain distance from the envelope surface of the side surface of the small end of the conrod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985022646U JPH0324938Y2 (en) | 1985-02-21 | 1985-02-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985022646U JPH0324938Y2 (en) | 1985-02-21 | 1985-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61140257U JPS61140257U (en) | 1986-08-30 |
| JPH0324938Y2 true JPH0324938Y2 (en) | 1991-05-30 |
Family
ID=30515136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985022646U Expired JPH0324938Y2 (en) | 1985-02-21 | 1985-02-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324938Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007025686A1 (en) * | 2005-08-29 | 2007-03-08 | Ks Kolbenschmidt Gmbh | Lightweight piston |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56175547U (en) * | 1980-05-28 | 1981-12-24 |
-
1985
- 1985-02-21 JP JP1985022646U patent/JPH0324938Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61140257U (en) | 1986-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0324938Y2 (en) | ||
| JPS6164589U (en) | ||
| JPH0369715U (en) | ||
| JPS60145674U (en) | reed valve | |
| JPS5943482Y2 (en) | internal combustion engine piston rings | |
| JPH0435565Y2 (en) | ||
| JPS6231614Y2 (en) | ||
| JPS6182145U (en) | ||
| JPH0230571U (en) | ||
| JPH0211852U (en) | ||
| JPS6238415U (en) | ||
| JPS5930184Y2 (en) | internal combustion engine | |
| JPS61119628U (en) | ||
| JPS5830640U (en) | Conveyance roller | |
| JPS59131619U (en) | Connecting rod joint structure | |
| JPS60160959U (en) | Stud mounting structure in chain ring | |
| JPS5825642U (en) | internal combustion engine piston | |
| JPS62160250U (en) | ||
| JPH04244671A (en) | Piston for internal combuation engine | |
| JPS6149100U (en) | ||
| JPS58146007U (en) | Pushrods for internal combustion engine valves | |
| JPS6179091U (en) | ||
| JPH0219347B2 (en) | ||
| JPH02130489U (en) | ||
| JPS61107959U (en) |