JPH08158838A - Bush for rocker arm - Google Patents
Bush for rocker armInfo
- Publication number
- JPH08158838A JPH08158838A JP6301935A JP30193594A JPH08158838A JP H08158838 A JPH08158838 A JP H08158838A JP 6301935 A JP6301935 A JP 6301935A JP 30193594 A JP30193594 A JP 30193594A JP H08158838 A JPH08158838 A JP H08158838A
- Authority
- JP
- Japan
- Prior art keywords
- press
- bush
- rocker arm
- fitting direction
- fitting
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エンジンの中空のロッ
カシャフトに揺動自在に取付けられたロッカアームのブ
ッシュに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rocker arm bushing which is swingably mounted on a hollow rocker shaft of an engine.
【０００２】[0002]
【従来の技術】中空のロッカシャフトの周りを揺動する
ロッカアームの焼付きを防止しするためにロッカアーム
にブッシュを設け、そのブッシュに溝を設けロッカシャ
フトの外周に設けられた穴からロッカシャフトの中空部
を介してオイルを供給して潤滑する技術は知られている
（例えば実開昭５５−１０８２０８号公報等参照）。2. Description of the Related Art A bush is provided on a rocker arm in order to prevent seizure of a rocker arm swinging around a hollow rocker shaft, and a groove is provided in the bush to form a groove on the outer circumference of the rocker shaft. A technique of supplying oil through a hollow portion to lubricate is known (see, for example, Japanese Utility Model Laid-Open No. 55-108208).
【０００３】また、ロッカアームがバルブステムに当接
する端部およびアジャストスクリューが螺合されるねじ
穴とに対して同様に、ブッシュに設けられた穴と溝とを
介して給油する技術も広く用いられている。Further, similarly to the end portion where the rocker arm abuts on the valve stem and the screw hole into which the adjusting screw is screwed, a technique of supplying oil through a hole and a groove provided in the bush is also widely used. ing.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、それら
の前記ブッシュに設けられた溝や穴はロッカアームの形
状により左右対称でなかったり、円周上に等間隔でない
事が多く、ブッシュはロッカアームに圧入により固定さ
れるが、前記の複数のブッシュの穴をロッカアームに合
致させるには位置合わせが必要で、作業指示或いは作業
者の経験で圧入方向を判断している。However, the grooves and holes provided in the bushes are often not symmetrical due to the shape of the rocker arm or are not evenly spaced on the circumference, and the bush is pressed into the rocker arm. Although fixed, it is necessary to align the holes of the plurality of bushes with the rocker arm, and the press-fitting direction is determined based on the work instruction or the experience of the operator.
【０００５】そのため、誤って逆方向に圧入しロッカシ
ャフトのオイル穴とブッシュの穴位置が一致せず、オイ
ルが供給されないで潤滑不良が生ずることがある。For this reason, the oil may be erroneously press-fitted in the opposite direction, the oil hole of the rocker shaft and the hole position of the bush may not be aligned, and oil may not be supplied, resulting in poor lubrication.
【０００６】したがって、本発明はブッシュの圧入時に
誤った方向に圧入しないロッカアーム用ブッシュを提供
することを目的としている。Therefore, it is an object of the present invention to provide a rocker arm bush that does not press-fit in the wrong direction when press-fitting the bush.
【０００７】[0007]
【課題を解決するための手段】本発明によれば、エンジ
ンの中空のロッカシャフトに揺動自在に取付けられたロ
ッカアームのブッシュにおいて、ブッシュに圧入方向識
別手段を設け、その圧入方向識別手段は圧入機に設けら
れた圧入方向識別手段と係合するよう構成されている。According to the present invention, in a bush of a rocker arm swingably attached to a hollow rocker shaft of an engine, a press-fitting direction identifying means is provided in the bush, and the press-fitting direction identifying means is press-fitted. It is configured to engage with the press-fitting direction identification means provided on the machine.
【０００８】また、本発明によれば、ブッシュの圧入方
向識別手段はブッシュの端部に設けた切欠き部としてい
る。Further, according to the present invention, the press-fitting direction identifying means of the bush is a notch provided at the end of the bush.
【０００９】[0009]
【作用】本発明は上記の通り構成されており、例えばブ
ッシュの端部に設けられた切欠き部等の圧入方向識別手
段を圧入機に設けられた圧入方向識別手段に係合するよ
うに取付けて圧入すれば、不慣れな作業者でも正しく圧
入することができる。The present invention is configured as described above, and for example, the press-fitting direction identifying means such as a notch provided at the end of the bush is attached so as to engage with the press-fitting direction identifying means provided in the press-fitting machine. By press-fitting, even an inexperienced worker can press-fit correctly.
【００１０】したがって、作業ミスによるロッカアーム
の潤滑不良が発生しない。Therefore, the lubrication failure of the rocker arm due to a work error does not occur.
【００１１】[0011]
【実施例】以下、図面を参照して、本発明の実施例につ
いて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明にかかるブッシュを圧入した
ロッカアームの斜視図を示し、ロッカアーム１のロッカ
シャフト穴２にはブッシュ３が圧入され、そのブッシュ
３はオイル溝７とオイル穴６および切欠き部８を有して
いる。FIG. 1 is a perspective view of a rocker arm having a bush according to the present invention press-fitted therein. A bush 3 is press-fitted into a rocker shaft hole 2 of the rocker arm 1, and the bush 3 has an oil groove 7, an oil hole 6 and a notch. It has a section 8.
【００１３】また、図２はロッカシャフト４に組込んだ
状態のシャフト部の部分断面を示し、ロッカシャフト４
にはオイル穴５が設けられ、ブッシュ３には前記のオイ
ル溝７と２か所のオイル穴６とが設けら、それぞれロッ
カアームの端部１ａにオイルを供給するオイル通路１０
とねじ穴１４とに連なるオイル通路１２とに合致するよ
う構成されている。ここで、符号１１と符号１３とは共
にメクラ蓋を示している。 そして、ブッシュ３の展開
図を示す図３において、ねじ穴１４側の穴６はオイル溝
７と連通し、ロッカアームの一端１ａに給油するオイル
通路１０と合致する穴６は油圧の保持と給油過剰を防止
するためオイル溝７と僅かの土手１５を残している。Further, FIG. 2 shows a partial cross section of the shaft portion assembled in the rocker shaft 4.
An oil hole 5 is provided in the bush 3, and the oil groove 7 and two oil holes 6 are provided in the bush 3, and an oil passage 10 for supplying oil to each end 1a of the rocker arm is provided.
And the oil passage 12 connected to the screw hole 14 and the screw hole 14. Here, reference numerals 11 and 13 both indicate blind cover. In FIG. 3 showing a development view of the bush 3, the hole 6 on the screw hole 14 side communicates with the oil groove 7, and the hole 6 that matches the oil passage 10 that supplies oil to the one end 1a of the rocker arm retains hydraulic pressure and is excessively oiled. In order to prevent this, the oil groove 7 and a slight bank 15 are left.
【００１４】以下、作用について説明する。The operation will be described below.
【００１５】ブッシュ圧入工程において、図示しない圧
入機に圧入治具２１を取付け、その治具２１にブッシュ
３を挿入する。この時、圧入治具２１の段部２１ａに設
けられたボチ２２とブッシュ３に設けられた切欠き部８
とが係合するよう圧入治具２１にブッシュ３を挿入す
る。In the bush press-fitting step, the press-fitting jig 21 is attached to a press-fitting machine (not shown), and the bush 3 is inserted into the jig 21. At this time, the punch 22 provided on the step portion 21a of the press-fitting jig 21 and the notch portion 8 provided on the bush 3 are provided.
The bush 3 is inserted into the press-fitting jig 21 so that and engage with each other.
【００１６】そして、圧入機のベッド２０に取付けられ
たロッカアーム１のロッカシャフト穴２に圧入機でブッ
シュ３を圧入する。Then, the bush 3 is press-fitted into the rocker shaft hole 2 of the rocker arm 1 attached to the bed 20 of the press-fitting machine by the press-fitting machine.
【００１７】ベッド２０には正規の位置にブッシュが圧
入されるよう図示しない治具によりロッカアームが取付
けられているので、オイル穴は正しく合致する。Since the rocker arm is attached to the bed 20 by a jig (not shown) so that the bush is press-fitted in the proper position, the oil holes are correctly aligned.
【００１８】したがって、ブッシュの取付けミスに因る
潤滑不良は生じない。Therefore, no lubrication failure due to a mistake in mounting the bush occurs.
【００１９】また、切欠き部の形状は図示の例に限定さ
れるものでなく、例えば半円や方形等でもよい。Further, the shape of the notch is not limited to the example shown in the figure, and may be, for example, a semicircle or a square.
【００２０】[0020]
【発明の効果】以上説明したように、本発明によればブ
ッシュに圧入方向識別手段を設け、その圧力方向識別手
段は圧入機に設けられた圧入方向識別手段と係合するよ
うしたため、ブッシュの取付けミスに因る潤滑不良が防
止される。また、製造設備の大々的な変更を必要としな
い。As described above, according to the present invention, the bush is provided with the press-fitting direction identifying means, and the pressure-direction identifying means is engaged with the press-fitting direction identifying means provided in the press-fitting machine. Prevents poor lubrication due to mounting mistakes. It also does not require major changes to manufacturing equipment.
【図１】本発明の一実施例を示すロッカアームの斜視
図。FIG. 1 is a perspective view of a rocker arm showing an embodiment of the present invention.
【図２】図１のロッカアームをロッカシャフトに組付け
た状態の部分断面図。FIG. 2 is a partial cross-sectional view of the rocker arm of FIG. 1 assembled to a rocker shaft.
【図３】図２のブッシュの展開図。FIG. 3 is a development view of the bush shown in FIG.
【図４】圧入作用を説明する図。FIG. 4 is a diagram illustrating a press-fitting action.
【符号の説明】 １…ロッカアーム ２…ロッカシャフト穴 ３…ブッシュ ４…ロッカッシャフト ５、６…オイル穴 ７…オイル溝 ８…切欠き部 １０、１２…オイル通路[Explanation of symbols] 1 ... Rocker arm 2 ... Rocker shaft hole 3 ... Bushing 4 ... Rocker shaft 5, 6 ... Oil hole 7 ... Oil groove 8 ... Notch portion 10, 12 ... Oil passage
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｆ１６Ｄ 1/06 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display area // F16D 1/06
Claims (2)
自在に取付けられたロッカアームのブッシュにおいて、
ブッシュに圧入方向識別手段を設け、その圧入方向識別
手段は圧入機に設けられた圧入方向識別手段と係合する
よう構成されたことを特徴とするロッカアーム用ブッシ
ュ。1. A rocker arm bushing that is swingably attached to a hollow rocker shaft of an engine,
A bush for a rocker arm, characterized in that a press-fitting direction identification means is provided on the bush, and the press-fitting direction identification means is configured to engage with the press-fitting direction identification means provided on the press-fitting machine.
の端部に設けた切欠き部とした請求項１に記載のロッカ
アーム用ブッシュ。2. The rocker arm bush according to claim 1, wherein the press-fitting direction identifying means of the bush is a notch provided at an end of the bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30193594A JP3150551B2 (en) | 1994-12-06 | 1994-12-06 | Rocker arm bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30193594A JP3150551B2 (en) | 1994-12-06 | 1994-12-06 | Rocker arm bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08158838A true JPH08158838A (en) | 1996-06-18 |
| JP3150551B2 JP3150551B2 (en) | 2001-03-26 |
Family
ID=17902885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30193594A Expired - Lifetime JP3150551B2 (en) | 1994-12-06 | 1994-12-06 | Rocker arm bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3150551B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012067426A3 (en) * | 2010-11-18 | 2012-07-12 | 두산인프라코어 주식회사 | Rocker arm shaft with improved abrasion resistance and rocker arm shaft/bush assembly comprising same |
-
1994
- 1994-12-06 JP JP30193594A patent/JP3150551B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012067426A3 (en) * | 2010-11-18 | 2012-07-12 | 두산인프라코어 주식회사 | Rocker arm shaft with improved abrasion resistance and rocker arm shaft/bush assembly comprising same |
| CN103221646A (en) * | 2010-11-18 | 2013-07-24 | 斗山英维高株式会社 | Rocker arm shaft with improved abrasion resistance and rocker arm shaft/bush assembly comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3150551B2 (en) | 2001-03-26 |
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