JPH02181014A - Device for lubricating cam shaft - Google Patents
Device for lubricating cam shaftInfo
- Publication number
- JPH02181014A JPH02181014A JP33462188A JP33462188A JPH02181014A JP H02181014 A JPH02181014 A JP H02181014A JP 33462188 A JP33462188 A JP 33462188A JP 33462188 A JP33462188 A JP 33462188A JP H02181014 A JPH02181014 A JP H02181014A
- Authority
- JP
- Japan
- Prior art keywords
- cam bearing
- oil
- camshaft
- base
- cam
- 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
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 238000005304 joining Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は吸排気弁に連結した弁腕とこの弁腕を揺動させ
るカム軸との接触面の潤滑状況を良くさせるカム軸潤滑
装置に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a camshaft lubrication device that improves the lubrication of the contact surface between a valve arm connected to an intake/exhaust valve and a camshaft that swings the valve arm. It is something.
（従来の技術）
吸排゛気弁の弁腕を揺動させるカム軸をシリンダヘッド
上部に設けたオーバヘッドカム機構の内燃機関において
、弁腕とカム軸との接触面等の潤滑は、従来よりカム部
周辺のオイル溜めに貯溜させたオイルをカム軸の回転に
より飛散させて行なっている。(Prior art) In an internal combustion engine with an overhead cam mechanism in which a camshaft that swings the valve arm of an intake/exhaust valve is installed at the top of the cylinder head, lubrication of the contact surfaces between the valve arm and the camshaft has traditionally been performed using the cam. This is done by scattering the oil stored in the oil reservoir around the camshaft by rotating the camshaft.
このオイル溜めは、第３図及び第４図に示すように、カ
ム軸（図示せず、以下同じ）を支持する複数のカム軸受
ｌの車両前部の対向壁部１ａ（第３図では手前側が前部
）にオイル貯溜用フェンス２をシリンダヘッド本体３と
一体に形成したものである。そして、このように形成さ
れたオイル溜め４にオイル５が供給されるとともにカム
軸６の一部をオイル５につけて、カム軸６等の潤滑を行
なっている。As shown in FIGS. 3 and 4, this oil reservoir is located at a wall portion 1a (on the near side in FIG. An oil storage fence 2 is formed integrally with the cylinder head body 3 (the front side is the front side). Oil 5 is supplied to the oil reservoir 4 thus formed, and a portion of the camshaft 6 is immersed in the oil 5 to lubricate the camshaft 6 and the like.
なお、内燃機関の潤滑として、オイル溜りの後側壁にオ
イルを飛散させるスリットを設けたもの（実公昭’５Ｂ
−２４２５４号公報）、また、内燃機関の弁腕装置とし
て、弁腕室のカバー内面にリブ状の軸受は部材を設けた
もの（実公昭５９−１９７７３号公報）がある。In addition, for lubricating the internal combustion engine, a slit is provided on the rear side wall of the oil reservoir to scatter oil (Jikkosho '5B).
There is also a valve arm device for an internal combustion engine in which a rib-shaped bearing member is provided on the inner surface of a cover of a valve arm chamber (Japanese Utility Model Publication No. 19773/1983).
（発明が解決しようとする課題）
しかしながら、上記従来のオイル溜めにおいては、オイ
ル溜めを構成するオイルフェンスが、シリンダヘッド加
工時の都合（例えば、鋳造成形のときの型抜き等）であ
まり高くできない問題点があった。したがって、貯溜す
るオイルの量もかぎられてくるため、弁腕とカム軸との
接触面に供給されるオイルの量や、また、カム軸に供給
されオイルの量が少なくなって摩耗が増加するなどの不
具合が発生しやすかった。(Problem to be Solved by the Invention) However, in the above-mentioned conventional oil reservoir, the oil fence that constitutes the oil reservoir cannot be made very high due to circumstances during cylinder head processing (for example, mold cutting during casting molding, etc.) There was a problem. Therefore, the amount of oil that can be stored is limited, which reduces the amount of oil that is supplied to the contact surface between the valve arm and the camshaft, and the amount of oil that is supplied to the camshaft, increasing wear. Problems such as these were likely to occur.
なお、実公昭５６−２４２５４号公報及び実公昭５８−
１９７７３号公報に開示されたものは、従来の技術問題
を解決しているものではない。In addition, Utility Model Publication No. 56-24254 and Utility Model Publication No. 58-
What is disclosed in Japanese Patent No. 19773 does not solve the conventional technical problems.
本発明は上記問題点を解決することを課題としたなされ
たものである。The present invention has been made to solve the above-mentioned problems.
（課題を解決するための手段）
上記課題を解決するために本発明に係るカム軸潤滑装置
６はシリンダヘッド本体７に、吸排気弁を揺動させるカ
ム軸と、該カム軸等に供給するオイルを溜るオイル溜り
１２と、を設けた内燃機関において、前記カム軸のジャ
ーナル部を支持する複数のカム軸受９を、シリンダヘッ
ド本体７に一体に形成され、かつシリンダヘッド本体７
の上面と略平行に分割されたカム軸受基部９ａと、該カ
ム軸受基部９ａと接合するカム軸受キャップ９ｂとで形
成すると共に前記シリンダへ−２ド本体７のカム軸受基
部８ａ間に、該カム軸受基部８ａ同士を連結するオイル
フェンス基部１０ａをシリンダヘッド本体７に一体に形
成し、前記カム軸受キャップ９ｂ間に、該カム軸受キャ
ップ８ｂ同士を連結する連結部を兼ねたオイルフェンス
上部１０ｂを一体に形成した構成としたものである。(Means for Solving the Problems) In order to solve the above problems, a camshaft lubricating device 6 according to the present invention supplies a camshaft to the cylinder head body 7, a camshaft that swings the intake and exhaust valves, the camshaft, etc. In an internal combustion engine provided with an oil reservoir 12 for collecting oil, a plurality of cam bearings 9 supporting the journal portion of the camshaft are integrally formed in the cylinder head body 7, and the cylinder head body 7
The cam is formed of a cam bearing base 9a divided approximately parallel to the upper surface and a cam bearing cap 9b joined to the cam bearing base 9a. An oil fence base 10a that connects the bearing bases 8a to each other is integrally formed on the cylinder head body 7, and an oil fence upper part 10b that also serves as a connecting part to connect the cam bearing caps 8b is integrally formed between the cam bearing caps 9b. The configuration is as follows.
（作 用）
以上のように構成したカム軸潤滑装置６は、シリンダヘ
ッド本体７に一体に形成された分割のカム軸受基部９ａ
とカム軸受キャップ８ｂとを接合させてカム軸を支持さ
せる。このとき、シリンダヘッド本体７に一体に形成さ
れたカム軸受基部９ａ同士を連結するオイルフェンス基
部１０ａとカム軸受キャップ９ｂ同士を連結する連結部
を兼ねたオイルフェンス上部１０ｂと、が合さってカム
軸近傍に大きなオイル溜り１２が形成される。(Function) The camshaft lubricating device 6 configured as described above has a divided cam bearing base 9a integrally formed with the cylinder head body 7.
and the cam bearing cap 8b are joined to support the camshaft. At this time, an oil fence base 10a that connects the cam bearing bases 9a integrally formed on the cylinder head body 7 and an oil fence upper part 10b that also serves as a connecting part that connects the cam bearing caps 9b are brought together and the cam A large oil reservoir 12 is formed near the axis.
（実施例）
次に本発明の一実施例を第１図及び第２図にもとづいて
説明する。６は前部（第１図においては右側が前部とな
る）に傾斜したシリンダヘッド本体７に設けられたカム
軸潤滑装置である。(Example) Next, an example of the present invention will be described based on FIGS. 1 and 2. Reference numeral 6 denotes a camshaft lubricating device provided on the cylinder head main body 7 that is inclined toward the front (the right side is the front in FIG. 1).
潤滑装置６は吸排気弁（図示せず）を揺動させるカム軸
（図示せず、以下同じ）に供給するオイル８を溜るもの
でカム軸受９とオイルフェンス１０とから概略構成され
る。The lubricating device 6 stores oil 8 to be supplied to a camshaft (not shown, the same applies hereinafter) that swings an intake/exhaust valve (not shown), and is generally composed of a cam bearing 9 and an oil fence 10.
カム軸受９はシリンダヘッド本体７に一体に形成され、
かつシリンダヘッド本体７の上面と略平行に、半分に分
割されたカム軸受基部８ａと、この軸受基部９ａと接合
する半分に分割されたカム軸受キャップ８ｂとからなっ
ている。このカム軸受部９は、本実施例においては、４
個形成されている（第２図参照）。The cam bearing 9 is integrally formed with the cylinder head body 7,
The cylinder head main body 7 is composed of a cam bearing base 8a divided in half substantially parallel to the upper surface of the cylinder head body 7, and a cam bearing cap 8b divided in half and joined to the bearing base 9a. In this embodiment, this cam bearing part 9 has four parts.
They are individually formed (see Figure 2).
そして、軸受基部９ａの対向面の両側壁近傍にシリンダ
ヘッド本体７と一体のオイルフェンス基部１０ａを設け
る。オイルフェンス基部１０ａはカム軸受基部８ａの中
央まで、すなわちカム軸受基部８ａと同一の高さまで形
成する。An oil fence base 10a integral with the cylinder head body 7 is provided near both side walls of the opposing surface of the bearing base 9a. The oil fence base 10a is formed up to the center of the cam bearing base 8a, that is, up to the same height as the cam bearing base 8a.
また、カム軸受キャップ８ｂの各対向面の両側壁近傍に
カム軸受キャップ８ｂ同士を連結する連結部を兼ねたオ
イルフェンス上部１０ｂを形成する。Further, an oil fence upper portion 10b that also serves as a connecting portion for connecting the cam bearing caps 8b to each other is formed near both side walls of each opposing surface of the cam bearing caps 8b.
このようにしたカム軸受９とオイルフェンス１０とを螺
子１１止め接合することによってオイル溜り１２を形成
させる。An oil reservoir 12 is formed by joining the cam bearing 9 and the oil fence 10 together with the screws 11.
以上のように構成されたカム軸潤滑装置６はシリンダヘ
ッド本体７に一体に形成された軸受基部８ａにカム軸を
挿入させ、その後カム軸受キャップ９ｂを接合させて、
カム軸をカム軸受９で支持する。この接合によって軸受
基部８ａに形成されたオイルフェンス基部１０ａと軸受
キャップ８ｂに形成されたオイルフェンス上部］Ｏｂと
が接合して、カム軸及びカム軸受９の近傍に大きなオイ
ル溜りが形成される。The camshaft lubricating device 6 configured as described above has the camshaft inserted into the bearing base 8a formed integrally with the cylinder head body 7, and then the cam bearing cap 9b is joined.
The camshaft is supported by a cam bearing 9. Through this joining, the oil fence base 10a formed on the bearing base 8a and the oil fence upper part Ob formed on the bearing cap 8b are joined, and a large oil pool is formed near the camshaft and the cam bearing 9.
（発明の効果）
以上説明したように、本発明によればカム軸のジャーナ
ル部を支持する複数のカム軸受をシリンダヘッド本体の
上面と略平行にして分割し、分割した上部のカム軸受キ
ャップにカム軸受キャップ同士を連結させるオイルフェ
ンスを設けるとともに下部のカム軸受基部にカム軸受基
部同士を連結させるオイルフェンスを設けたものである
から、この軸受キャップと軸受基部とを接合させれば、
大きなオイル溜りを形成することができる。これによっ
てカム軸等の潤滑状況を良くさすことができる。また、
機関を大きく寝かせた場合でもカム軸の潤滑状況は変る
ことはない。(Effects of the Invention) As described above, according to the present invention, a plurality of cam bearings that support the journal portion of a camshaft are divided into sections substantially parallel to the top surface of the cylinder head body, and the cam bearing caps on the top of the divided sections are Since an oil fence is provided to connect the cam bearing caps to each other and an oil fence is provided to connect the cam bearing bases to each other at the lower cam bearing base, if the bearing cap and the bearing base are joined,
Large oil pools can be formed. This allows for better lubrication of the camshaft, etc. Also,
The lubrication status of the camshaft does not change even if the engine is left in a large position.
第１図は本発明の一実施例を示す断面図、第２図は第１
図のものの平面図、第３図は従来のカム軸受の斜視図、
第４図は従来のものの断面図であ
る。
６・・・カム軸潤滑装置
７・・・シリンダヘッド本体
９・・・カム軸受
８ａ・・・カム軸受基部
９ｂ・・・カム軸受キャップ
１０・・・オイルフェンス
１０ａ・・・オイルフェンス基部
ｔａｂ・・・オイルフェンス上部FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
3 is a perspective view of a conventional cam bearing, and FIG. 4 is a sectional view of the conventional cam bearing. 6...Camshaft lubricating device 7...Cylinder head body 9...Cam bearing 8a...Cam bearing base 9b...Cam bearing cap 10...Oil fence 10a...Oil fence base tab.・・Top of oil fence
Claims (1)
ム軸と、該カム軸等に供給するオイルを溜るオイル溜り
と、を設けた内燃機関において、前記カム軸のジャーナ
ル部を支持する複数のカム軸受を、シリンダヘッド本体
に一体に形成され、かつシリンダヘッド本体の上面と略
平行に分割されたカム軸受基部と、該カム軸受基部と接
合するカム軸受キャップとで形成すると共に前記シリン
ダヘッド本体のカム軸受基部間に、該カム軸受基部同士
を連結するオイルフェンス基部をシリンダヘッド本体に
一体に形成し、前記カム軸受キャップ間に、該カム軸受
キャップ同士を連結する連結部を兼ねたオイルフェンス
上部を一体に形成したことを特徴とするカム軸潤滑装置
。(1) In an internal combustion engine in which the cylinder head body is provided with a camshaft that swings the intake and exhaust valves, and an oil reservoir that collects oil to be supplied to the camshaft, etc., a plurality of cylinders that support the journal portion of the camshaft are provided. The cam bearing is formed of a cam bearing base that is integrally formed with the cylinder head main body and divided approximately parallel to the upper surface of the cylinder head main body, and a cam bearing cap that joins the cam bearing base, and a cam bearing cap that is connected to the cam bearing base. Between the cam bearing bases of the main body, an oil fence base that connects the cam bearing bases to each other is formed integrally with the cylinder head body, and between the cam bearing caps, an oil fence that also serves as a connecting part to connect the cam bearing caps to each other is formed. A camshaft lubricating device characterized by integrally forming the upper part of the fence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33462188A JPH02181014A (en) | 1988-12-29 | 1988-12-29 | Device for lubricating cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33462188A JPH02181014A (en) | 1988-12-29 | 1988-12-29 | Device for lubricating cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02181014A true JPH02181014A (en) | 1990-07-13 |
Family
ID=18279428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33462188A Pending JPH02181014A (en) | 1988-12-29 | 1988-12-29 | Device for lubricating cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02181014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016211457A (en) * | 2015-05-11 | 2016-12-15 | スズキ株式会社 | Valve gear lubricating device for internal combustion engine |
-
1988
- 1988-12-29 JP JP33462188A patent/JPH02181014A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016211457A (en) * | 2015-05-11 | 2016-12-15 | スズキ株式会社 | Valve gear lubricating device for internal combustion engine |
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