JPH0115889Y2 - - Google Patents
Info
- Publication number
- JPH0115889Y2 JPH0115889Y2 JP1983093319U JP9331983U JPH0115889Y2 JP H0115889 Y2 JPH0115889 Y2 JP H0115889Y2 JP 1983093319 U JP1983093319 U JP 1983093319U JP 9331983 U JP9331983 U JP 9331983U JP H0115889 Y2 JPH0115889 Y2 JP H0115889Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve arm
- valve
- camshaft
- shaft
- chamber
- 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
Links
- 239000010687 lubricating oil Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Description
【考案の詳細な説明】
本考案は弁腕室内にカム軸及び各弁腕軸を平行
に設けた内燃機関の弁腕室装置に関するものであ
る。[Detailed Description of the Invention] The present invention relates to a valve arm chamber device for an internal combustion engine in which a cam shaft and each valve arm shaft are provided in parallel within the valve arm chamber.
船外機に搭載される内燃機関においては、その
クランク軸を垂直方向に配設する垂直軸型のもの
が一般に使用されると共に、その内燃機関をコン
パクトにまとめる必要からオーバヘツドカム式の
ものが通常多く採用される。 The internal combustion engines installed in outboard motors are generally of the vertical shaft type, with their crankshafts arranged in a vertical direction, and overhead cam type engines are also commonly used due to the need to make the internal combustion engine compact. Adopted.
また、シリンダヘツドの上部に設けた弁腕室内
に、カム軸及びそのカム軸により駆動される燃料
弁腕ならびに吸排気弁腕の各弁腕軸をそのカム軸
に平行に設けることになる。 Further, in the valve arm chamber provided in the upper part of the cylinder head, a camshaft and a fuel valve arm and an intake/exhaust valve arm driven by the camshaft are provided parallel to the camshaft.
そこで、上記のカム軸ならびに各弁腕軸はクラ
ンク軸と平行な垂直方向に配設されることになる
が、各弁腕軸を中空に形成して、各弁腕への潤滑
油通路用としてその中空部を使用した場合、その
中空部端部をシールするためのめくらぶたを取付
けることになるが、機関の振動により、そのめく
らぶたが外れると中空部に充満した潤滑油が機関
外部にあふれでるという恐れがある。 Therefore, the above-mentioned camshaft and each valve arm shaft are arranged vertically parallel to the crankshaft, but each valve arm shaft is formed hollow to provide a lubricating oil passage to each valve arm. When the hollow part is used, a blind lid is installed to seal the end of the hollow part, but if the blind lid comes off due to engine vibration, the lubricating oil filled in the hollow part will be released outside the engine. There is a fear that it will overflow.
一方、カム軸はその弁腕室に対してその軸方向
の位置決めを行なう必要があり、そこで本考案
は、カム軸の弁腕室に対する位置決め用の押えプ
レートを上記弁腕軸の中空部端部をシールするめ
くらぶたの押えプレートに兼用させることによ
り、部品点数の低減をはかると共に、機関の軽量
化をはかることを目的としてなされたものであ
る。 On the other hand, it is necessary to position the camshaft in the axial direction with respect to the valve arm chamber. Therefore, in the present invention, a presser plate for positioning the camshaft with respect to the valve arm chamber is attached to the hollow end of the valve arm shaft. The purpose of this design was to reduce the number of parts and reduce the weight of the engine by using it as the presser plate for the blind lid that seals the lid.
即ち、本考案の弁腕室装置は、弁腕室内に、潤
滑油通路用の中空部を有する弁腕軸をカム軸と平
行に設けた内燃機関において、その弁腕軸の中空
部端部をシールするめくらぶたを押えうる押えプ
レートをそのカム軸の軸方向の位置決め用プレー
トと兼用して弁腕室部材に固設したことを特徴と
したものである。 That is, the valve arm chamber device of the present invention is used in an internal combustion engine in which a valve arm shaft having a hollow portion for a lubricating oil passage is provided in the valve arm chamber parallel to a camshaft. The present invention is characterized in that a holding plate capable of holding down the blind lid to be sealed is fixed to the valve arm chamber member and also serves as a positioning plate in the axial direction of the camshaft.
なお本明細書において、「弁腕軸」および「カ
ム軸」なる用語は、弁腕室内に配置された吸気弁
用弁腕軸、排気弁用弁腕軸、および、あるいはユ
ニツトインジエクシヨン用弁腕軸を意味するもの
である。 In this specification, the terms "valve arm shaft" and "cam shaft" refer to the valve arm shaft for an intake valve, the valve arm shaft for an exhaust valve, and/or the valve arm shaft for a unit injection valve arranged in the valve arm chamber. It means the arm axis.
以下図面を参照して本考案の一実施例を説明す
るが、第１図は本考案の実施例における垂直軸型
デイーゼル機関の弁腕室の平面図、第２図は第１
図のＡ−Ａ方向の平断面図、第３図は第１図のＢ
−Ｂ方向の側断面図である。 An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a plan view of a valve arm chamber of a vertical shaft diesel engine according to an embodiment of the invention, and Fig.
A plane cross-sectional view in the A-A direction of the figure, Figure 3 is B of Figure 1.
- It is a sectional side view of B direction.
まず、このデイーゼル機関は図示されていない
クランク軸を垂直に配設した垂直軸型のものであ
り、従つて第２図に示すピストン１は水平方向に
往復動し、そのピストン１の頂部に設けた燃焼室
５にはシリンダヘツド６上の弁腕室７側からユニ
ツトインジエクタ１０が装着されている。 First, this diesel engine is of a vertical shaft type in which a crankshaft (not shown) is disposed vertically, and therefore the piston 1 shown in FIG. 2 reciprocates in the horizontal direction. A unit injector 10 is attached to the combustion chamber 5 from the valve arm chamber 7 side above the cylinder head 6.
次に、弁腕室部材３２により囲まれた上記弁腕
室７には、カム軸２０及びユニツトインジエクタ
１０を駆動する燃料弁腕２１の弁腕軸２３ならび
に第３図に示す吸気弁３５、排気弁３６を開閉す
る弁腕２４，２５の弁腕軸２６が、図示されてい
ないクランク軸とそれぞれ平行に設けられてい
る。 Next, the valve arm chamber 7 surrounded by the valve arm chamber member 32 includes the valve arm shaft 23 of the fuel valve arm 21 that drives the camshaft 20 and the unit injector 10, and the intake valve 35 shown in FIG. Valve arm shafts 26 of the valve arms 24 and 25 that open and close the exhaust valve 36 are provided parallel to a crankshaft (not shown), respectively.
そこで第２，３図に示すごとく、これら弁腕軸
２３ならびに２６には潤滑油通路用の中空部５６
ならびに５７がそれぞれ設けられており、この内
燃機関の潤滑油のメインギヤラリから供給される
潤滑油はシリンダヘツド６に設けられたきり穴
（図示せず）から弁腕室部材３２をシリンダヘツ
ド６に締付けるボルト２８の外周に設けた隙間を
通り、弁腕軸２６の中空部５７内に入り、吸排気
弁の弁腕２４，２５に注油される。 Therefore, as shown in FIGS. 2 and 3, these valve arm shafts 23 and 26 have hollow portions 56 for lubricating oil passages.
and 57 are provided, respectively, and the lubricating oil supplied from the main gear lary for lubricating oil of the internal combustion engine is passed from the valve arm chamber member 32 to the cylinder head 6 through a cut hole (not shown) provided in the cylinder head 6. The lubricant passes through a gap provided on the outer periphery of the bolt 28 to be tightened, enters the hollow portion 57 of the valve arm shaft 26, and lubricates the valve arms 24, 25 of the intake and exhaust valves.
次に、弁腕軸２６内に充満された潤滑油は潤滑
油通路（図示せず）を通り、カム軸２０のジヤー
ナルをも注目すると共に、更に別の締付ボルト２
８の外周に設けた隙間を通り、弁腕軸２３の中空
部５６内に入り、燃料弁腕２１に注油される。 Next, the lubricating oil filled in the valve arm shaft 26 passes through a lubricating oil passage (not shown), and the journal of the camshaft 20 is also noticed, as well as another tightening bolt 2.
The oil passes through a gap provided on the outer periphery of the fuel valve 8 and enters the hollow part 56 of the valve arm shaft 23, and the fuel valve arm 21 is filled with oil.
そこで、第３図に示した弁腕軸２６の中空部５
７及び弁腕軸２３の中空部５６内には潤滑油が充
満しており、それら中空部５７，５６の端部には
シール６０を嵌装の後、めくらぶた５０及び５１
が設けられると共に、これらめくらぶた５０及び
５１は押えプレート５２により押えられている。 Therefore, the hollow portion 5 of the valve arm shaft 26 shown in FIG.
7 and the hollow part 56 of the valve arm shaft 23 are filled with lubricating oil, and after fitting the seal 60 into the ends of the hollow parts 57 and 56, the blind lids 50 and 51 are filled with lubricating oil.
are provided, and these blind lids 50 and 51 are held down by a holding plate 52.
一方、第１図に示すカム軸２０は矢印E′−
E″方向に対する位置決めが必要であるが、矢印
E′方向に対しては、カム軸２０のつば２０Ａがあ
り、このつば２０Ａに対して軸受５５及び間座５
４、更にオイルシール５３を介して上記押えプレ
ート５２により抜け止めするように位置決めされ
ており、またE″方向には、カム軸２０にボルト
６２で固設したプーリ６１が軸受５５の側部６３
に当接し、この軸受５５が弁腕室部材３２の点６
４で当接することにより位置決めされるようにな
つている。 On the other hand, the camshaft 20 shown in FIG.
Although positioning in the E″ direction is required, the arrow
With respect to the E' direction, there is a collar 20A of the camshaft 20, and a bearing 55 and a spacer 5 are connected to this collar 20A.
4. Furthermore, it is positioned so as to be prevented from coming off by the presser plate 52 via the oil seal 53, and in the E'' direction, a pulley 61 fixed to the camshaft 20 with a bolt 62 is attached to the side 63 of the bearing 55.
The bearing 55 contacts the point 6 of the valve arm chamber member 32.
Positioning is achieved by abutting at point 4.
以上のごとく、上記押えプレート５２は弁腕軸
２６，２３の各中空部５７，５６のめくらぶた５
０，５１を押える機能を有すると共に、カム軸２
０の位置決め用の機能をも有しながら、第３図に
示すように弁腕室部材３２にボルト６５により固
定されている。 As described above, the presser plate 52 covers the blind lids 5 of the hollow portions 57, 56 of the valve arm shafts 26, 23.
It has the function of holding down the camshaft 2
While also having a function for positioning the valve 0, it is fixed to the valve arm chamber member 32 with a bolt 65 as shown in FIG.
従つて、本考案の弁腕室装置では、カム軸の弁
腕室に対する位置決め用の押えプレートを各弁腕
軸の中空部の端部をシールするめくらぶたの押え
プレートに兼用できるので、弁腕室内の部品点数
の低減をはかり、それだけ弁腕室をコンパクト
に、かつ軽量にすることができるという利点があ
る。 Therefore, in the valve arm chamber device of the present invention, the presser plate for positioning the camshaft with respect to the valve arm chamber can also be used as the presser plate for the blind lid that seals the end of the hollow part of each valve arm shaft. This has the advantage that the number of parts in the chamber can be reduced, and the valve arm chamber can be made more compact and lightweight.
第１図は本考案の実施例における垂直軸型デイ
ーゼル機関の弁腕室の平面図、第２図は第１図の
Ａ−Ａ方向の平断面図、第３図は第１図のＢ−Ｂ
方向の側断面図である。
７……弁腕室、２３，２６……弁腕軸、２４，
２５……弁腕、３２……弁腕室部材、５０，５
１，６０……めくらぶた、５２……押えプレー
ト、５６，５７……中空部、６５……ボルト。
FIG. 1 is a plan view of a valve arm chamber of a vertical axis diesel engine according to an embodiment of the present invention, FIG. 2 is a plan cross-sectional view taken along the line A-A in FIG. 1, and FIG. B
It is a side sectional view of the direction. 7... Valve arm chamber, 23, 26... Valve arm axis, 24,
25... Valve arm, 32... Valve arm chamber member, 50,5
1,60...blind lid, 52...presser plate, 56,57...hollow part, 65...bolt.
Claims (1)
腕軸をカム軸と平行に設けた内燃機関において、
該弁腕軸の中空部端部をシールするめくらぶたを
押えると共に、前記カム軸の軸方向の位置決めと
して機能する押えプレートを弁腕室部材に固設し
たことを特徴とする内燃機関の弁腕室装置。 In an internal combustion engine in which a valve arm shaft having a hollow part for a lubricating oil passage is provided in a valve arm chamber parallel to a camshaft,
A valve arm for an internal combustion engine, characterized in that a presser plate is fixed to a valve arm chamber member, which presses a blind lid that seals the hollow end of the valve arm shaft and also functions to position the camshaft in the axial direction. room equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331983U JPS601956U (en) | 1983-06-20 | 1983-06-20 | Internal combustion engine valve arm chamber device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9331983U JPS601956U (en) | 1983-06-20 | 1983-06-20 | Internal combustion engine valve arm chamber device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS601956U JPS601956U (en) | 1985-01-09 |
| JPH0115889Y2 true JPH0115889Y2 (en) | 1989-05-11 |
Family
ID=30224068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9331983U Granted JPS601956U (en) | 1983-06-20 | 1983-06-20 | Internal combustion engine valve arm chamber device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601956U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS606586Y2 (en) * | 1980-11-29 | 1985-03-02 | ヤンマーディーゼル株式会社 | Diesel engine cylinder head oil supply system |
-
1983
- 1983-06-20 JP JP9331983U patent/JPS601956U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS601956U (en) | 1985-01-09 |
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