JPH0771265A - Installation structure for engine - Google Patents
Installation structure for engineInfo
- Publication number
- JPH0771265A JPH0771265A JP6240294A JP6240294A JPH0771265A JP H0771265 A JPH0771265 A JP H0771265A JP 6240294 A JP6240294 A JP 6240294A JP 6240294 A JP6240294 A JP 6240294A JP H0771265 A JPH0771265 A JP H0771265A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- engine
- camshaft
- pump
- accessory
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エンジンの動力を利用
する補機の組付けを容易とし得るエンジンの組付構造に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine assembling structure which facilitates the assembling of an auxiliary machine utilizing the power of the engine.
【０００２】[0002]
【従来の技術】従来より、ガソリンエンジンなどのエン
ジンにおいては、吸排気の為のバルブを開閉動するカム
が用いられている。このカムは、カムシャフトに固定し
て取付けられていて、カムシャフトの回転によりカムが
回転して、バルブの開閉動作が行われている。また、こ
のようなエンジンには、エンジンの動力を利用するオイ
ルポンプや燃料ポンプ等の補機が取付けられていて、カ
ムシャフトに付属して取付けられる補機用カムにより、
駆動されていた。2. Description of the Related Art Conventionally, in engines such as gasoline engines, cams for opening and closing valves for intake and exhaust have been used. The cam is fixedly attached to the cam shaft, and the cam is rotated by the rotation of the cam shaft to open and close the valve. In addition, an auxiliary machine such as an oil pump or a fuel pump that uses the power of the engine is attached to such an engine.
It was driven.
【０００３】すなわち、補機用カムは、バルブを開閉動
する通常のカムと同様に、カムのベース円に対して、必
要に応じて外周部分を突出させて形成されている。従っ
て、エンジンの駆動に際して、カムシャフトが回転し、
補機用カムも回転する結果、補機用カムの外周面と当接
する補機の受動用ピンが往復動して動力が伝達されてい
た。That is, the auxiliary machine cam is formed by projecting an outer peripheral portion of the base circle of the cam as needed, like a normal cam that opens and closes a valve. Therefore, when the engine is driven, the camshaft rotates,
As a result of the auxiliary machine cam also rotating, the passive pin of the auxiliary machine, which contacts the outer peripheral surface of the auxiliary machine cam, reciprocates to transmit power.
【０００４】[0004]
【発明が解決しようとする課題】前述のようなカムシャ
フト及び補機をエンジンに組付ける際には、通常、カム
シャフトを取付け、さらに補機用カムに補機の受動ピン
を当接しつつ補機を取付けることが行われる。従って、
補機の取付時に、補機用カムの突出部分に受動ピンが当
接すると、補機内のスプリングによる弾性力に抗して取
付作業を行わなければならず、作業性が悪いという課題
を有する。When assembling the above-mentioned camshaft and auxiliary machinery to an engine, the camshaft is usually attached and the auxiliary cam of the auxiliary machinery is contacted with the auxiliary cam of the auxiliary machinery. Installation of the machine is performed. Therefore,
If the passive pin comes into contact with the protruding portion of the accessory cam during attachment of the accessory, the attachment work must be performed against the elastic force of the spring in the accessory, resulting in a problem of poor workability.
【０００５】[0005]
【課題を解決するための手段】本発明によるエンジンの
組付構造は、シリンダ内に吸排気するバルブを開閉動す
るカムが取付けられるカムシャフトと、エンジンの動力
を利用して駆動される補機と、前記カムシャフトに取付
けられて前記カムシャフトの回転動力を該補機に伝達す
る補機用カムとを有するエンジンの組付構造において、
前記補機用カムの外周面のベース円区間に、往復動して
前記補機に動力を取込む受動ピンを当接するように、前
記カムシャフトの回転方向位置を位置決めして前記カム
シャフトをエンジンに挿着することを特徴とするもので
ある。SUMMARY OF THE INVENTION An engine mounting structure according to the present invention includes a cam shaft to which a cam for opening and closing a valve for intake and exhaust of a cylinder is attached, and an auxiliary device driven by the power of the engine. And an auxiliary machine cam that is attached to the camshaft and transmits the rotational power of the camshaft to the auxiliary machine,
The camshaft is engine-positioned by positioning the rotational position of the camshaft so that a passive pin that reciprocates to take power into the accessory comes into contact with the base circle section of the outer peripheral surface of the accessory cam. It is characterized by being attached to.
【０００６】[0006]
【作用】カムシャフトが回転することにより、バルブが
開閉動してシリンダ内に吸排気がされる。カムシャフト
に取付けられる補機用カムに補機の受動ピンが当接し、
カムシャフトの回転動力が補機に伝達される。With the rotation of the camshaft, the valve opens and closes to suck and exhaust air in the cylinder. The auxiliary pin of the accessory comes into contact with the accessory cam that is attached to the camshaft,
The rotational power of the camshaft is transmitted to the auxiliary equipment.
【０００７】一方、補機のエンジンへの組付けの際に
は、補機の受動ピンが補機用カムのベース円区間に当接
するようにカムシャフトの回転方向位置を決め、ベース
円区間に受動ピンを当接しつつ補機を組付ける。On the other hand, when assembling the auxiliary machine to the engine, the rotational position of the camshaft is determined so that the passive pin of the auxiliary machine contacts the base circle section of the auxiliary machine cam, and the position of the camshaft is adjusted to the base circle section. Assemble the accessory while abutting the passive pin.
【０００８】[0008]
【実施例】本発明の一実施例を図１から図３に示し、こ
れらの図に基づき本実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS. 1 to 3, and this embodiment will be described based on these drawings.
【０００９】図１に示すように、エンジンの組立に先立
ち、エンジンのシリンダ内に吸排気を行う図示しないバ
ルブを開閉動するカム３が取付けられるカムシャフト１
を製作する。この時、図１の右寄りに取付けて固定した
補機用カムであるポンプカム２のベース円区間２ａと、
カムシャフト１の左端に嵌合されるダウエルピン４が嵌
合されているカムシャフト１の外周位置との間の位相を
一致させて、カムシャフト１を製作しておくこととす
る。As shown in FIG. 1, prior to engine assembly, a camshaft 1 to which a cam 3 for opening and closing a valve (not shown) for intake and exhaust is mounted in the cylinder of the engine is mounted.
To produce. At this time, the base circle section 2a of the pump cam 2 which is the cam for the auxiliary machine mounted and fixed on the right side of FIG.
It is assumed that the camshaft 1 is manufactured in phase with the outer peripheral position of the camshaft 1 into which the dowel pin 4 fitted to the left end of the camshaft 1 is fitted.
【００１０】そして、図２に示すように、エンジンのシ
リンダヘッド５に吸気用及び排気用の一対のカムシャフ
ト１を挿着する際に、それぞれダウエルピン４が上方に
位置するようにカムシャフト１を回転して、位置決めす
る。また、カムシャフト１には図示しないスプロケット
が取付けられ、このスプロケットを介してカムシャフト
１が回転される。尚、ポンプカム２が取付けられるカム
シャフト１は、図２上のいずれのカムシャフト１であっ
てもよい。Then, as shown in FIG. 2, when the pair of intake and exhaust camshafts 1 is inserted into the cylinder head 5 of the engine, the camshaft 1 is placed so that the dowel pins 4 are located above each other. Rotate and position. A sprocket (not shown) is attached to the camshaft 1, and the camshaft 1 is rotated via the sprocket. The camshaft 1 to which the pump cam 2 is attached may be any of the camshafts 1 shown in FIG.
【００１１】次に、図１に示すような補機であるオイル
ポンプ６をエンジンに組付けることとするが、オイルポ
ンプ６は、オイルポンプ６に挿入された受動ピン７の往
復動で、ＩＮ側からＯＵＴ側に油を送り出す構造となっ
ている。そして、図１上、受動ピン７の上方への移動
は、ポンプカム２の回転に際して、図１及び図３に示す
ようなポンプカム２の突出区間２ｂで押し上げられ、下
方への移動は、オイルポンプ６内のコイルスプリング８
で押し下げられて行われ、この繰返しで受動ピン７の往
復動が行われることとなる。Next, the oil pump 6 which is an auxiliary machine as shown in FIG. 1 is assembled to the engine. The oil pump 6 is reciprocally moved by the passive pin 7 inserted into the oil pump 6, and the IN It has a structure to send oil from the side to the OUT side. Then, in FIG. 1, the upward movement of the passive pin 7 is pushed up by the protruding section 2b of the pump cam 2 as shown in FIGS. 1 and 3 when the pump cam 2 is rotated, and the downward movement is caused by the oil pump 6 Coil spring in 8
Then, the passive pin 7 is reciprocated by repeating the above process.
【００１２】従って、この組付けに際し、受動ピン７は
ポンプカム６のベース円区間２ａに当接する為、受動ピ
ン７はコイルスプリング８に押し下げられたままの状態
で、リフトされずにオイルポンプ６を組付けることが可
能となる。Therefore, at the time of this assembly, the passive pin 7 abuts on the base circle section 2a of the pump cam 6, so that the passive pin 7 is kept pressed down by the coil spring 8 and is not lifted to lift the oil pump 6. It becomes possible to assemble.
【００１３】以上より、エンジンの動力を利用するオイ
ルポンプ６をエンジンに組付けるに際して、コイルスプ
リング８の弾性力に抗しつつ作業を行う必要がなくな
る。As described above, when the oil pump 6 utilizing the power of the engine is assembled to the engine, it is not necessary to work while resisting the elastic force of the coil spring 8.
【００１４】尚、本実施例において、補機をオイルポン
プとしたが、燃料ポンプなどの他の機器としてもよい。In this embodiment, the auxiliary machine is an oil pump, but it may be other equipment such as a fuel pump.
【００１５】[0015]
【発明の効果】本発明のエンジンの組付構造によれば、
補機用カムに往復動される補機の受動ピンが補機用カム
のベース円区間に当接しつつエンジンに組付けられるよ
うな構造とした結果、受動ピンがリフトされず、補機内
のスプリングの弾性力に抗して補機を組付ける必要がな
くなった。従って、組付作業の際の労力が削減され、作
業性の向上が図られた。According to the engine assembly structure of the present invention,
As a result of the structure that the passive pin of the auxiliary machine that is reciprocated by the auxiliary cam is attached to the engine while contacting the base circle section of the auxiliary cam, the passive pin is not lifted and the spring inside the auxiliary machine is not lifted. It is no longer necessary to assemble an auxiliary machine against the elastic force of. Therefore, the labor at the time of assembling work was reduced and the workability was improved.
【図１】本発明の一実施例に係るカムシャフト及びオイ
ルポンプの説明図である。FIG. 1 is an explanatory diagram of a camshaft and an oil pump according to an embodiment of the present invention.
【図２】本発明の一実施例に係るカムシャフトが挿着さ
れたシリンダヘッドの側面図である。FIG. 2 is a side view of a cylinder head having a camshaft inserted therein according to an embodiment of the present invention.
【図３】図１のＡ−Ａ矢視断面図である。3 is a sectional view taken along the line AA of FIG.
１ カムシャフト ２ ポンプカム ２ａ ベース円区間 ２ｂ 突出区間 ３ カム ４ ダウエルピン ５ シリンダヘッド ６ オイルポンプ ７ 受動ピン ８ コイルスプリング 1 camshaft 2 pump cam 2a base circle section 2b protruding section 3 cam 4 dowel pin 5 cylinder head 6 oil pump 7 passive pin 8 coil spring
Claims (1)
するカムが取付けられるカムシャフトと、エンジンの動
力を利用して駆動される補機と、前記カムシャフトに取
付けられて前記カムシャフトの回転動力を該補機に伝達
する補機用カムとを有するエンジンの組付構造におい
て、前記補機用カムの外周面のベース円区間に、往復動
して前記補機に動力を取込む受動ピンを当接するよう
に、前記カムシャフトの回転方向位置を位置決めして前
記カムシャフトをエンジンに挿着することを特徴とする
エンジンの組付構造。1. A camshaft to which a cam for opening and closing a valve for intake and exhaust to and from a cylinder is attached, an auxiliary machine driven by power of an engine, and a rotation of the camshaft attached to the camshaft. In an assembling structure of an engine having an accessory cam for transmitting power to the accessory, a passive pin that reciprocates to take power into the accessory in a base circle section of an outer peripheral surface of the accessory cam. The camshaft is inserted in the engine by positioning the rotational position of the camshaft so as to abut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062402A JP2560634B2 (en) | 1994-03-31 | 1994-03-31 | Camshaft positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6062402A JP2560634B2 (en) | 1994-03-31 | 1994-03-31 | Camshaft positioning structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0771265A true JPH0771265A (en) | 1995-03-14 |
| JP2560634B2 JP2560634B2 (en) | 1996-12-04 |
Family
ID=13199116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6062402A Expired - Lifetime JP2560634B2 (en) | 1994-03-31 | 1994-03-31 | Camshaft positioning structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2560634B2 (en) |
-
1994
- 1994-03-31 JP JP6062402A patent/JP2560634B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2560634B2 (en) | 1996-12-04 |
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