JPH0752414Y2 - Mounting structure for large end of connecting rod - Google Patents
Mounting structure for large end of connecting rodInfo
- Publication number
- JPH0752414Y2 JPH0752414Y2 JP1987182819U JP18281987U JPH0752414Y2 JP H0752414 Y2 JPH0752414 Y2 JP H0752414Y2 JP 1987182819 U JP1987182819 U JP 1987182819U JP 18281987 U JP18281987 U JP 18281987U JP H0752414 Y2 JPH0752414 Y2 JP H0752414Y2
- Authority
- JP
- Japan
- Prior art keywords
- connecting rod
- large end
- cap
- bolt
- mounting structure
- 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 - Lifetime
Links
Landscapes
- Sliding-Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Description
【考案の詳細な説明】 （考案の技術分野） 本考案はコンロッド大端部の取付構造、さらに詳細には
コンロッド大端部本体とキャップをボルト締めして固定
した構造において、前記ボルトのコンロッド大端部本体
とキャップとの合わせ面近傍にコンロッド外部より潤滑
油を給油可能にし、ボルトのフレッティングを防止でき
るようにした取付構造に関する。[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a structure for attaching a large end of a connecting rod, and more specifically, to a structure in which a main body of the large connecting rod and a cap are fastened by bolts. The present invention relates to a mounting structure in which lubricating oil can be supplied from the outside of the connecting rod near the mating surface between the end body and the cap, and fretting of the bolt can be prevented.
（従来技術） コンロッド大端部は、第１図に示すようにピストンに接
続される小端部（図示せず）と連続する大端部本体１と
この大端部本体１とボルト２により一体固定されるキャ
ップ３を有した構造になっている。このコンロッド大端
部本体１及びキャップの凹部11及び31を有しており、こ
の凹部11及び31に軸受４を介してクランクピン５をはめ
合わせて、前記ボルト２によってコンロッド大端部本体
１とキャップ３を一体固定することによって、クランク
軸（図示せず）とピストン（図示せず）を連結し、ピス
トンの往復運動を回転運動に変換する作用を営むように
なっている。(Prior Art) The connecting rod large end is integrally formed by a large end body 1 continuous with a small end (not shown) connected to a piston as shown in FIG. It has a structure having a cap 3 to be fixed. The connecting rod large-end main body 1 and the cap recesses 11 and 31 are provided. The crankpin 5 is fitted into the recesses 11 and 31 via the bearing 4, and the connecting rod large-end main body 1 is connected by the bolt 2. By fixing the cap 3 integrally, a crankshaft (not shown) and a piston (not shown) are connected to each other so that the reciprocating motion of the piston is converted into a rotary motion.
このような構造のコンロッド大端部の取付構造におい
て、前記大端部本体とキャップ３の合わせ面６付近のボ
ルト部分Ａに微小な振動にさらされることによる表面損
傷、すなわちフレッティング（微動磨耗）を生じること
が知られている。このようなフレッティングを生じると
ボルトが損傷するなどの恐れがあるため、従来第２図に
示すように、ボルト頭部21、ボルト軸部22、ねじ部23を
有するようなボルト２の前記軸部22の合わせ面対応付近
Ａに凹み24を設けて、前記大端部本体１及びキャップ３
との接触を極小とするボルト２構造が知られている。In the connecting structure of the large end portion of the connecting rod having such a structure, the bolt portion A near the mating surface 6 of the main body of the large end portion and the cap 3 is exposed to minute vibrations, that is, fretting (fine movement wear) Is known to occur. If such fretting occurs, the bolt may be damaged. Therefore, as shown in FIG. 2, the shaft of the bolt 2 having a bolt head 21, a bolt shaft portion 22, and a screw portion 23 is conventionally used. A recess 24 is provided in the vicinity A corresponding to the mating surface of the portion 22, and the large end body 1 and the cap 3 are provided.
A bolt 2 structure that minimizes contact with is known.
また、第３図に示すようにクランクピン５と軸受４との
間の磨耗を抑制するために供給されている、潤滑油の一
部をボルト２の合わせ面付近Ａに供給するように軸受４
及びキャップ３に給油穴７を設けた構造の取付構造も開
発されている。Further, as shown in FIG. 3, the bearing 4 is supplied so as to supply a part of the lubricating oil to the vicinity A of the mating surface of the bolt 2, which is supplied to suppress the wear between the crank pin 5 and the bearing 4.
Also, a mounting structure having a structure in which the cap 3 is provided with the oil supply hole 7 has been developed.
しかしながら、ボルトの軸部22に凹みを設ける構造にあ
っては、前記ボルト軸部22の直径を小さくすることにな
り、複雑形状のボルトを製造するため、ボルト自体が高
価になるばかりでなく、断面積が小さくなるために強度
上も好ましくない。However, in the structure in which the shaft portion 22 of the bolt is provided with a recess, the diameter of the bolt shaft portion 22 is reduced, and since the bolt having a complicated shape is manufactured, not only the bolt itself becomes expensive, but also Since the cross-sectional area becomes small, it is not preferable in terms of strength.
一方、クランクピン５側より潤滑油を供給する構造にあ
っては、軸受４に形成する給油穴の位置、形状などの面
より、自動車の各車種によって独自に軸受などを設計す
る必要を生じ、コストアップになるという欠点があっ
た。On the other hand, in the structure in which the lubricating oil is supplied from the crankpin 5 side, it is necessary to design the bearing and the like uniquely for each type of automobile in terms of the position and shape of the oil supply hole formed in the bearing 4. It had the drawback of increasing costs.
（考案の目的） 本考案は上述の点に鑑みなされたものであり、ボルトの
合わせ面対応付近にコンロッド外部より潤滑油を供給す
るような給油穴を設け、前記ボルト合わせ面対応付近の
潤滑を良好に行なえ、かつコストアップにならないコン
ロッド大端部の取付構造を提供することを目的とする。(Purpose of the Invention) The present invention has been made in view of the above points, and an oil supply hole for supplying lubricating oil from the outside of the connecting rod is provided in the vicinity of the mating surface of the bolt so as to lubricate the vicinity of the mating surface of the bolt. It is an object of the present invention to provide a mounting structure for a large end portion of a connecting rod that can be favorably performed and does not increase the cost.
（考案の構成） 上記目的を達成するため、本考案によるコンロッド大端
部の取付構造は、ピストンに取り付けられる小端部と接
続するコネクティングロッド（以下コンロッドという）
大端部本体に形成された凹部に軸受を介してクランクピ
ンにはめ合わせ、前記凹部に対応する凹部を有するキャ
ップを当接して、前記コンロッド大端部本体とキャップ
をボルトで固着したコンロッド大端部の取付構造におい
て、前記コンロッド大端部本体下端とキャップの合わせ
面付近にコンロッド外部より潤滑油を前記ボルトに供給
するための給油穴を設けたことを特徴としている。(Structure of the Invention) In order to achieve the above object, the connecting structure of the large end portion of the connecting rod according to the present invention is a connecting rod (hereinafter referred to as connecting rod) that is connected to a small end portion attached to a piston.
A connecting rod large end in which the connecting rod large end portion main body and the cap are fixed by bolts are fitted in the concave portion formed in the large end portion main body through a bearing to a crank pin, and a cap having a concave portion corresponding to the concave portion is abutted In the mounting structure of the portion, an oil supply hole for supplying lubricating oil from the outside of the connecting rod to the bolt is provided in the vicinity of the mating surface between the lower end of the connecting rod large end body and the cap.
（実施例） 第４図は本考案によるコンロッド大端部の取付構造の一
部断面図であるが、この図より明らかなように、本考案
によるコンロッド大端部の取付構造は、ピストンに接続
する小端部と連続する大端部本体１を有し、この大端部
本体１は軸受４を介してクランクピン５に取り付けられ
る半円状の凹み11を有している。(Embodiment) FIG. 4 is a partial cross-sectional view of the connecting structure of the large end of the connecting rod according to the present invention. As is apparent from this figure, the connecting structure of the connecting rod large end according to the present invention is connected to the piston. Has a large end body 1 continuous with a small end, and the large end body 1 has a semi-circular recess 11 that is attached to a crank pin 5 via a bearing 4.
一方、前記軸受４を介してクランクピン５を挟持するた
めのキャップ３にも半円状凹部31が形成されており、こ
の凹部11及び31間でクランクピン５を挟持するようにな
っている。On the other hand, a semicircular recess 31 is also formed in the cap 3 for sandwiching the crankpin 5 via the bearing 4, and the crankpin 5 is sandwiched between the recesses 11 and 31.
このキャップ３を大端部本体１に固定するためのボルト
２は、大端部本体１の側部及びキャップの側部に穿設さ
れたボルト穴12及び32に挿通し、ナット８によって螺着
するようになっている。The bolt 2 for fixing the cap 3 to the large end body 1 is inserted into the bolt holes 12 and 32 formed in the side portion of the large end body 1 and the side portion of the cap, and is screwed by the nut 8. It is supposed to do.
本考案においては、前記大端部本体１とキャップ３の合
わせ面６付近のボルト部分Ａにコンロッド外部より貫通
する給油穴９が設けられている。この実施例において
は、前記給油穴９はキャップ側に設けてあるが、破線で
示したように大端部本体側に設けてよいのは、明らかで
ある。In the present invention, a bolt portion A near the mating surface 6 of the large end body 1 and the cap 3 is provided with an oil supply hole 9 penetrating from the outside of the connecting rod. In this embodiment, the oil supply hole 9 is provided on the cap side, but it is obvious that it may be provided on the large end body side as shown by the broken line.
このような構造であるため、ピストンの往復運動に連動
して、前記コンロッド大端部も往復運動すると、前記大
端部付近はオイルパン内に貯蔵されている潤滑油内に浸
漬され、またオイルパンないの潤滑油が跳びはねて、前
記給油穴９より合わせ面６付近のボルト部分Ａに潤滑油
が給油される。このため、前記ボルト２のフレッティン
グが防止できることになる。With such a structure, when the connecting rod large end portion also reciprocates in conjunction with the reciprocating movement of the piston, the vicinity of the large end portion is immersed in the lubricating oil stored in the oil pan, and the oil The lubricating oil without pan jumps and the lubricating oil is supplied from the oil supply hole 9 to the bolt portion A near the mating surface 6. Therefore, fretting of the bolt 2 can be prevented.
（考案の効果） 以上説明したように本考案によるコンロッド大端部の取
付構造によれば、軸受に穴明け加工をすることなく、ま
たボルトを特殊構造にすることなく、ボルトのフレッテ
ィング防止ができるようになるという利点がある。この
ため、複数の車種に共通して使用可能になり、コストの
低廉なフレッティング防止ができるという利点を生じ
る。(Effects of the Invention) As described above, according to the connecting rod large end mounting structure of the present invention, it is possible to prevent the fretting of the bolt without drilling the bearing and without using a special structure of the bolt. There is an advantage that it will be possible. Therefore, it can be commonly used for a plurality of vehicle types, and there is an advantage that fretting can be prevented at low cost.
第１図はコンロッドの大端部の一部断面図、第２図は従
来のフレッティング防止構造を有するボルトの側面図、
第３図は従来のコンロッド大端部付近の取付構造の断面
図、第４図は本考案による一実施例の一部断面図であ
る。 １……コンロッド大端部本体、２……ボルト、３……キ
ャップ、４……軸受、５……クランクピン、６……合わ
せ面、９……給油穴。FIG. 1 is a partial cross-sectional view of a large end portion of a connecting rod, FIG. 2 is a side view of a bolt having a conventional fretting prevention structure,
FIG. 3 is a sectional view of a conventional mounting structure near the large end of a connecting rod, and FIG. 4 is a partial sectional view of an embodiment according to the present invention. 1 ... connecting rod large end body, 2 ... bolt, 3 ... cap, 4 ... bearing, 5 ... crank pin, 6 ... mating surface, 9 ... oiling hole.
Claims (1)
るコネクティングロッド（以下コンロッドという）大端
部本体に形成された凹部に軸受を介してクランクピンに
はめ合わせ、前記凹部に対応する凹部を有するキャップ
を当接して、前記コンロッド大端部本体とキャップをボ
ルトで固着したコンロッド大端部の取付構造において、
前記コンロッド大端部本体下端とキャップの合わせ面付
近にコンロッド外部より潤滑油を前記ボルトに供給する
ための給油穴を設けたことを特徴とするコネクティング
ロッド大端部の取付構造。1. A recess formed in a connecting rod (hereinafter referred to as a connecting rod) large end body connected to a small end attached to a piston is fitted to a crank pin through a bearing and has a recess corresponding to the recess. In the mounting structure of the connecting rod large end portion in which the cap is abutted and the connecting rod large end portion main body and the cap are fixed with bolts,
A connecting rod large end mounting structure, characterized in that an oil supply hole for supplying lubricating oil to the bolt from the outside of the connecting rod is provided in the vicinity of the mating surface between the lower end of the connecting rod large end body and the cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987182819U JPH0752414Y2 (en) | 1987-11-30 | 1987-11-30 | Mounting structure for large end of connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987182819U JPH0752414Y2 (en) | 1987-11-30 | 1987-11-30 | Mounting structure for large end of connecting rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0185516U JPH0185516U (en) | 1989-06-07 |
| JPH0752414Y2 true JPH0752414Y2 (en) | 1995-11-29 |
Family
ID=31474263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987182819U Expired - Lifetime JPH0752414Y2 (en) | 1987-11-30 | 1987-11-30 | Mounting structure for large end of connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752414Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6713495B2 (en) * | 2018-03-01 | 2020-06-24 | 株式会社豊田自動織機 | Connecting rod |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59153717U (en) * | 1983-03-31 | 1984-10-15 | ヤンマーディーゼル株式会社 | Crank journal bearing lubrication mechanism |
| JPS6137778U (en) * | 1984-08-10 | 1986-03-08 | 凸版印刷株式会社 | Reel pipe sheet for fishing rod |
| JPS6157221U (en) * | 1984-09-20 | 1986-04-17 | ||
| JPH0442597Y2 (en) * | 1985-09-05 | 1992-10-08 | ||
| JPS6260720U (en) * | 1985-10-05 | 1987-04-15 |
-
1987
- 1987-11-30 JP JP1987182819U patent/JPH0752414Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0185516U (en) | 1989-06-07 |
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