JPH11303872A - Oil-grooved bearing structure - Google Patents

Oil-grooved bearing structure

Info

Publication number
JPH11303872A
JPH11303872A JP11161698A JP11161698A JPH11303872A JP H11303872 A JPH11303872 A JP H11303872A JP 11161698 A JP11161698 A JP 11161698A JP 11161698 A JP11161698 A JP 11161698A JP H11303872 A JPH11303872 A JP H11303872A
Authority
JP
Japan
Prior art keywords
bearing
oil
oil groove
broaching
bearing 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.)
Pending
Application number
JP11161698A
Other languages
Japanese (ja)
Inventor
Kaoru Hanawa
薫 塙
Kenichi Noda
憲一 野田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP11161698A priority Critical patent/JPH11303872A/en
Publication of JPH11303872A publication Critical patent/JPH11303872A/en
Pending legal-status Critical Current

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  • Lubrication Of Internal Combustion Engines (AREA)
  • Sliding-Contact Bearings (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce man-hours, to simplify a processing facility and to enhance the retention of oil during processing of a bearing structure equipped with an oil supply means for a bearing surface. SOLUTION: During broaching of the inner surface of a bearing S in a small end part 3s of a connecting rod 3, an oil groove (m) is simultaneously formed by broaching in the inner surface of the bearing S. In this arrangement, the oil groove (m) may be formed in a straight shape along its axis or a spiral shape which can be formed by drawing the bearing S while a broaching tool is rotated. Further, the oil groove (m) may be formed in a bearing on the large end part side, or in a bearing of a rocker arm.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、例えば自動二輪車
等のエンジンのコネクティングロッド等の軸受構造に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing structure such as a connecting rod of an engine of a motorcycle or the like.

【0002】[0002]

【従来の技術】従来、例えば自動二輪車等のエンジンの
ピストンとクランクシャフトを連結するコネクティング
ロッド51の加工は、図5に示すように、ピストン連結
側の小端部51sの内径加工を行って軸受Sを成形した
後、軸受Sの内周面に潤滑油を供給するための給油孔5
2をドリル加工等によって加工するようにしている。
2. Description of the Related Art Conventionally, as shown in FIG. 5, the processing of a connecting rod 51 for connecting a piston and a crankshaft of an engine of a motorcycle or the like is performed by processing an inner diameter of a small end portion 51s on the piston connection side as shown in FIG. After forming the S, an oil supply hole 5 for supplying lubricating oil to the inner peripheral surface of the bearing S
2 is drilled or the like.

【0003】[0003]

【発明が解決しようとする課題】ところが、上記のよう
に軸受Sの加工と給油孔52の加工を別工程で行えば、
それぞれの工程でワークをセット治具等にセットし直し
て加工する必要があり、またそれぞれの加工設備が必要
になるという問題がある。しかも、給油孔52の方向が
軸の半径方向であるため、コネクティングロッドのよう
にストローク運動する場合や、軸受Sが軸に対して回動
するような時に、油が外部に散逸しやすく、オイル保持
の点から不利である。
However, if the processing of the bearing S and the processing of the oil supply hole 52 are performed in separate steps as described above,
In each process, it is necessary to reset the work on the set jig or the like and perform the processing, and there is a problem that each processing equipment is required. In addition, since the direction of the oil supply hole 52 is the radial direction of the shaft, the oil is easily dissipated to the outside when performing a stroke motion like a connecting rod or when the bearing S rotates with respect to the shaft. Disadvantageous in terms of retention.

【0004】そこで本発明は、軸受面に対して給油手段
を備えた軸受構造を加工するにあたり、加工工数の削減
と加工設備の簡素化を図るとともに、摺動面への油の保
持機能を高めることを目的とする。
Accordingly, the present invention reduces the number of processing steps and simplifies processing equipment when processing a bearing structure having an oil supply means on the bearing surface, and enhances the function of retaining oil on the sliding surface. The purpose is to:

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
本発明は、請求項1において、軸受と軸の摺動部に向け
て潤滑用油を供給する油溝を備えた軸受構造において、
油溝を、軸受の軸受面に刻設するようにした。
According to the present invention, there is provided a bearing structure having an oil groove for supplying lubricating oil to a sliding portion between a bearing and a shaft.
The oil groove is formed on the bearing surface of the bearing.

【0006】このように油溝を軸受面に形成すれば、例
えば同じ加工設備を使用して軸受の形成と同時に油溝を
形成することも可能となり、加工設備の簡素化や、加工
の段取りの簡略化を図ることが出来る。また油溝を軸受
面に刻設すれば、軸受が回動したり、軸受が往復動して
も油が散逸するような事態が抑制され、油保持機能が向
上する。ここで、軸受面に刻設する油溝は、軸受内周面
の軸方向に沿った方向でも良く、円周方向に沿った方向
でも良く、中間の斜め方向でも良い。
If the oil groove is formed on the bearing surface in this way, it is possible to form the oil groove simultaneously with the formation of the bearing using the same processing equipment, for example, thereby simplifying the processing equipment and setting up the processing. Simplification can be achieved. In addition, if the oil groove is formed in the bearing surface, a situation in which oil is dissipated even if the bearing rotates or the bearing reciprocates is suppressed, and the oil holding function is improved. Here, the oil groove engraved on the bearing surface may be a direction along the axial direction of the inner peripheral surface of the bearing, a direction along the circumferential direction, or an intermediate oblique direction.

【0007】また請求項2では、油溝を、ブローチ加工
によって軸受面に軸方向と平行に形成するようにした。
このようにブローチ加工によって油溝を軸方向と平行に
形成するようにすれば、軸受を内面ブローチ加工する際
に、ブローチ加工具を軸方向に引抜くように移動させる
だけで軸受と油溝を同時に加工することが出来、加工容
易である。
According to a second aspect of the present invention, the oil groove is formed in the bearing surface by broaching in parallel with the axial direction.
If the oil groove is formed in parallel with the axial direction by broaching in this way, the bearing and the oil groove can be formed only by moving the broaching tool in the axial direction when performing the inner broaching of the bearing. It can be processed simultaneously and is easy to process.

【0008】また請求項3では、油溝を、ブローチ加工
によって軸受面にスパイラル状に形成するようにした。
ここで、ブローチ加工によって油溝をスパイラル状に形
成する際は、軸受を内面ブローチ加工する際に、ブロー
チ加工具を回転させながら軸方向に引抜けば良く、この
場合も軸受と油溝を同時に加工することが出来る。ま
た、油溝をスパイラル状にすることで、潤滑面に対する
油の補給範囲を広げることが出来、しかも油を外部に流
出しにくくすることが出来る。
According to a third aspect of the present invention, the oil groove is formed in a spiral shape on the bearing surface by broaching.
Here, when forming the oil groove in a spiral shape by broaching, it is sufficient to pull out in the axial direction while rotating the broaching tool when performing the inner surface broaching of the bearing. Can be processed. Further, by making the oil groove spiral, it is possible to widen the supply range of the oil to the lubricating surface, and it is possible to make it difficult for the oil to flow out.

【0009】そして請求項4では、この軸受を、車両用
エンジンのコネクティングロッド等の連結部に適用する
ようにした。ここで、コネクティングロッドは、ピスト
ンの往復動に連れてストローク移動しながら軸受作用を
果たす必要上、特に本構造のように油の散逸を抑制出来
る構造を適用すれば好適である。この際、コネクティン
グロッドの軸受は、ピストンに連結される小端部側の連
結部でも、クランクシャフトに連結される大端部側の連
結部でも適用出来るが、特に、軸受面にニードル、ブッ
シュ等が介装されない場合が好適である。また、コネク
ティングロッドの他にも、例えばロッカアーム等の軸受
にも適用出来る。
In claim 4, the bearing is applied to a connecting portion of a connecting rod of a vehicle engine. Here, since the connecting rod needs to perform a bearing function while moving in a stroke along with the reciprocating motion of the piston, it is preferable to apply a structure that can suppress the dissipation of oil as in the present structure. At this time, the connecting rod bearing can be applied to the connecting portion on the small end portion connected to the piston or the connecting portion on the large end portion connected to the crankshaft. Is preferably not interposed. In addition to the connecting rod, the present invention can be applied to a bearing such as a rocker arm.

【0010】[0010]

【発明の実施の形態】本発明の実施の形態について添付
した図面に基づき説明する。ここで図1は自動二輪車等
のエンジンの部分断面図、図2は本発明に係る軸受構造
が採用されるコネクティングロッドの小端部の斜視図、
図3は本発明に係る軸受構造を小端部と大端部に適用し
た場合の説明図で、(A)は平面図、(B)は断面図、
図4は油溝をスパイラル状にした場合の説明図である。
Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a partial sectional view of an engine of a motorcycle or the like, FIG. 2 is a perspective view of a small end of a connecting rod in which a bearing structure according to the present invention is adopted,
3A and 3B are explanatory views of a case where the bearing structure according to the present invention is applied to a small end and a large end, wherein FIG. 3A is a plan view, FIG.
FIG. 4 is an explanatory diagram when the oil groove is formed in a spiral shape.

【0011】図1に示すように、自動二輪車等のエンジ
ンにおいて、ピストン1の往復運動をクランクシャフト
2の回転運動に変換するコネクティングロッド3は、小
端部3s側の軸受Sがピストンピン4に連結され、大端
部3b側の軸受Bがニードルベアリング5を介してクラ
ンクシャフト2のクランクピン2pに連結されている。
As shown in FIG. 1, in an engine of a motorcycle or the like, a connecting rod 3 for converting a reciprocating motion of a piston 1 into a rotating motion of a crankshaft 2 has a bearing S on a small end 3 s side attached to a piston pin 4. The bearing B on the side of the large end 3 b is connected to the crankpin 2 p of the crankshaft 2 via the needle bearing 5.

【0012】そして本発明に係る軸受構造は、小端部3
s側の軸受Sに適用され、この軸受Sは、軸受Sとピス
トンピン4の摺動部に潤滑用油を供給するための油溝m
(実施形態では2本)を内周面に備えている。そしてこ
の油溝mは、図2にも示すように、軸受Sの内面にピス
トンピン4の軸方向と平行に刻設されており、軸受Sの
内面ブローチ加工時に軸受Sの加工と同時に成形されて
いる。
The bearing structure according to the present invention has a small end 3
This is applied to the s-side bearing S. This bearing S is provided with an oil groove m for supplying lubricating oil to the sliding portion between the bearing S and the piston pin 4.
(Two in the embodiment) are provided on the inner peripheral surface. As shown in FIG. 2, the oil groove m is formed in the inner surface of the bearing S in parallel with the axial direction of the piston pin 4, and is formed simultaneously with the processing of the bearing S during the inner surface broaching of the bearing S. ing.

【0013】このような形態の油溝mにすることで、従
来のように軸受Sをブローチ加工した後、別工程で給油
孔52をドリル加工するような手間をかけなくても、ブ
ローチ加工だけで両者を加工することが出来、加工工数
の削減、及び加工設備の簡素化が可能である。しかも、
図5に示す従来の給油孔52は、コネクティングロッド
51の往復動方向に概略一致した方向に形成されている
ため、油の保持作用の点から不利であったが、本発明の
ように軸受Sの内面に刻設すれば、往復動方向に対して
直交する方向となり、油保持の上から有利となる。
By forming the oil groove m in such a form, after the bearing S is broached as in the related art, the broaching can be performed without the trouble of drilling the oil supply hole 52 in a separate process. Thus, both can be processed, thereby reducing the number of processing steps and simplifying the processing equipment. Moreover,
Since the conventional oil supply hole 52 shown in FIG. 5 is formed in a direction substantially coincident with the reciprocating direction of the connecting rod 51, it is disadvantageous from the viewpoint of oil holding action. If it is engraved on the inner surface, it becomes a direction orthogonal to the reciprocating direction, which is advantageous from the viewpoint of oil holding.

【0014】ところで、図1に示す形態のエンジンで
は、クランクシャフト2側に連結される大端部3b側の
軸受Bにニードルベアリング5が介装されているため、
油溝mの構成は小端部3s側だけとしているが、大端部
3b側の軸受Bが直接クランクピン2pに連結されるよ
うなタイプのエンジンの場合では、図3に示すように、
大端部3b側の軸受Bにも適用することが出来、この場
合も同様の効果が得られる。
By the way, in the engine of the embodiment shown in FIG. 1, the needle bearing 5 is interposed in the bearing B on the large end 3b side connected to the crankshaft 2 side.
Although the configuration of the oil groove m is only on the small end 3s side, in the case of an engine of a type in which the bearing B on the large end 3b side is directly connected to the crank pin 2p, as shown in FIG.
The present invention can be applied to the bearing B on the side of the large end 3b, and the same effect can be obtained in this case.

【0015】また、コネクティングロッド3以外にも、
例えばバルブを開閉させるロッカアームの軸受等にも適
用することが出来る。
In addition to the connecting rod 3,
For example, the present invention can be applied to a rocker arm bearing that opens and closes a valve.

【0016】以上のような油溝mは、図4に示すよう
に、スパイラル状に形成するようにしても良い。この場
合は、軸受Sの内面ブローチ加工を行う時にブローチ加
工具を回転させつつ軸方向に引抜くだけで成形すること
が出来、潤滑面に対する油の供給範囲を広げることが出
来る。この場合も加工工数が削減され、加工設備の簡素
化が可能である。
The oil groove m as described above may be formed in a spiral shape as shown in FIG. In this case, when the inner surface broaching of the bearing S is performed, it can be formed only by pulling out the axial direction while rotating the broaching tool, and the oil supply range to the lubricating surface can be expanded. Also in this case, the number of processing steps is reduced, and the processing equipment can be simplified.

【0017】尚、本発明は以上のような実施形態に限定
されるものではない。本発明の特許請求の範囲に記載し
た事項と実質的に同一の構成を有し、同一の作用効果を
奏するものは本発明の技術的範囲に属する。例えば油溝
mの数等は任意であり、またコネクティングロッド以外
のロッカーアームの軸受にも適用出来る。
The present invention is not limited to the above embodiment. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same operation and effect belong to the technical scope of the present invention. For example, the number of oil grooves m is arbitrary, and the present invention can be applied to a rocker arm bearing other than the connecting rod.

【0018】[0018]

【発明の効果】以上のように本発明に係る油溝付き軸受
構造は、請求項1のように、油溝を軸受の軸受面に刻設
するようにしたため、同じ加工設備を使用して軸受穴形
成と同時に油溝を形成することが可能となり、加工設備
の簡素化や、加工工数の削減を図ることが出来る。また
油保持作用の面からも有利となる。そして請求項2のよ
うに、油溝を軸方向と平行に形成するようにすれば、軸
受を内面ブローチ加工する際に、ブローチ加工具を軸方
向に引抜くように移動させるだけで軸受と油溝を同時に
加工することが出来、また請求項3のように、油溝をス
パイラル状に形成するようにすれば、軸受穴を内面ブロ
ーチ加工する際に、ブローチ加工具を回転させながら軸
方向に引抜けば良いためいずれも容易に加工出来る。そ
して請求項4のように、この軸受を、車両用エンジンの
コネクティングロッド等の連結部に適用すれば、特に油
の保持の面から有利となる。
As described above, in the bearing structure with an oil groove according to the present invention, since the oil groove is formed on the bearing surface of the bearing, the same processing equipment is used. The oil groove can be formed simultaneously with the formation of the hole, so that the processing equipment can be simplified and the number of processing steps can be reduced. It is also advantageous from the viewpoint of oil retaining action. If the oil groove is formed in parallel with the axial direction as in claim 2, when the bearing is subjected to inner surface broaching, the bearing and the oil are simply moved by pulling out the broaching tool in the axial direction. The grooves can be machined at the same time, and if the oil grooves are formed in a spiral shape as described in claim 3, when the bearing hole is machined on the inner surface, the broaching tool is rotated in the axial direction. All can be easily processed because it only needs to be pulled out. If this bearing is applied to a connecting portion such as a connecting rod of a vehicle engine, it is particularly advantageous in terms of oil retention.

【図面の簡単な説明】[Brief description of the drawings]

【図1】自動二輪車等のエンジンの部分断面図FIG. 1 is a partial sectional view of an engine of a motorcycle or the like.

【図2】本発明に係る軸受構造が採用されるコネクティ
ングロッドの小端部の斜視図
FIG. 2 is a perspective view of a small end of a connecting rod in which the bearing structure according to the present invention is adopted.

【図3】本発明に係る軸受構造を小端部と大端部に適用
した場合の説明図で、(A)は平面図、(B)は断面図
3A and 3B are explanatory views of a case where the bearing structure according to the present invention is applied to a small end and a large end, wherein FIG. 3A is a plan view and FIG.

【図4】油溝をスパイラル状にした場合の説明図FIG. 4 is an explanatory view of a case where an oil groove is formed in a spiral shape.

【図5】従来のコネクティングロッドの小端部の斜視図FIG. 5 is a perspective view of a small end of a conventional connecting rod.

【符号の説明】[Explanation of symbols]

3…コネクティングロッド、S…軸受、m…油溝。 3: Connecting rod, S: Bearing, m: Oil groove.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 軸受と軸の摺動部に向けて潤滑用油を供
給する油溝を備えた軸受構造であって、前記油溝は、軸
受の軸受面に刻設されることを特徴とする油溝付き軸受
構造。
1. A bearing structure having an oil groove for supplying lubricating oil toward a sliding portion between a bearing and a shaft, wherein the oil groove is engraved on a bearing surface of the bearing. Bearing structure with oil grooves.
【請求項2】 請求項1に記載の油溝付き軸受構造にお
いて、前記油溝は、ブローチ加工によって軸受面に軸方
向と平行に形成されることを特徴とする油溝付き軸受構
造。
2. The bearing structure with an oil groove according to claim 1, wherein the oil groove is formed in a bearing surface in parallel with an axial direction by broaching.
【請求項3】 請求項1に記載の油溝付き軸受構造にお
いて、前記油溝は、ブローチ加工によって軸受面にスパ
イラル状に形成されることを特徴とする油溝付き軸受構
造。
3. The bearing structure with an oil groove according to claim 1, wherein the oil groove is formed in a spiral shape on a bearing surface by broaching.
【請求項4】 請求項1乃至請求項3のいずれか1項に
記載の油溝付き軸受構造において、前記軸受は、車両用
エンジンのコネクティングロッド等の連結部に適用され
ることを特徴とする油溝付き軸受構造。
4. The bearing structure with an oil groove according to claim 1, wherein the bearing is applied to a connecting portion such as a connecting rod of a vehicle engine. Bearing structure with oil groove.
JP11161698A 1998-04-22 1998-04-22 Oil-grooved bearing structure Pending JPH11303872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11161698A JPH11303872A (en) 1998-04-22 1998-04-22 Oil-grooved bearing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11161698A JPH11303872A (en) 1998-04-22 1998-04-22 Oil-grooved bearing structure

Publications (1)

Publication Number Publication Date
JPH11303872A true JPH11303872A (en) 1999-11-02

Family

ID=14565852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11161698A Pending JPH11303872A (en) 1998-04-22 1998-04-22 Oil-grooved bearing structure

Country Status (1)

Country Link
JP (1) JPH11303872A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008184953A (en) * 2007-01-29 2008-08-14 Denso Corp Fuel supply pump
JP2009202653A (en) * 2008-02-26 2009-09-10 Otsuka Koki Co Ltd Lubricating structure of rotation center
DE112004001454B4 (en) * 2003-08-08 2013-10-02 Verdichter Oe Ges.M.B.H. Piston pin bearing
CN103711784A (en) * 2013-12-07 2014-04-09 中国北方发动机研究所(天津) Connecting rod small end bushing additionally provided with spiral oil duct
JP2020016176A (en) * 2018-07-25 2020-01-30 日産自動車株式会社 Upper link in double-link type piston crank mechanism of internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112004001454B4 (en) * 2003-08-08 2013-10-02 Verdichter Oe Ges.M.B.H. Piston pin bearing
JP2008184953A (en) * 2007-01-29 2008-08-14 Denso Corp Fuel supply pump
JP2009202653A (en) * 2008-02-26 2009-09-10 Otsuka Koki Co Ltd Lubricating structure of rotation center
CN103711784A (en) * 2013-12-07 2014-04-09 中国北方发动机研究所(天津) Connecting rod small end bushing additionally provided with spiral oil duct
JP2020016176A (en) * 2018-07-25 2020-01-30 日産自動車株式会社 Upper link in double-link type piston crank mechanism of internal combustion engine

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