JPS632600Y2 - - Google Patents
Info
- Publication number
- JPS632600Y2 JPS632600Y2 JP15811082U JP15811082U JPS632600Y2 JP S632600 Y2 JPS632600 Y2 JP S632600Y2 JP 15811082 U JP15811082 U JP 15811082U JP 15811082 U JP15811082 U JP 15811082U JP S632600 Y2 JPS632600 Y2 JP S632600Y2
- Authority
- JP
- Japan
- Prior art keywords
- flywheel
- cooling fan
- internal combustion
- combustion engine
- engaged
- 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
- 238000001816 cooling Methods 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 239000007858 starting material Substances 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関、特に強制空冷式の汎用内燃
機関に於ける冷却フアンの取付け装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a cooling fan in an internal combustion engine, particularly a forced air-cooled general-purpose internal combustion engine.
この種の内燃機関に於て、クランク軸等の回転
軸1にフライホイール2をキー3等で回り止め嵌
合し、そのフライホイール2の側面に機関のの冷
却フアン4とリコイルスタータ5の始動用プーリ
6とを順次に重ね合せて上記回転軸にねじ込んだ
ナツト7で共締め固定したものは知られている
(例えば特開昭51−101642号公報参照)。 In this type of internal combustion engine, a flywheel 2 is fitted onto a rotating shaft 1 such as a crankshaft with a key 3, etc., and a cooling fan 4 and a recoil starter 5 for starting the engine are attached to the side of the flywheel 2. It is known that a pulley 6 and a pulley 6 are stacked one on top of the other and fixed together by tightening with a nut 7 screwed into the rotating shaft (for example, see Japanese Patent Laid-Open No. 101642/1983).
本考案は上記のような内燃機関においてフライ
ホイール2と冷却フアン4および始動用プーリ6
の三者を確実に回り止め固定することを目的とす
る。 The present invention provides a flywheel 2, a cooling fan 4, and a starting pulley 6 in an internal combustion engine as described above.
The purpose is to securely prevent rotation of the three parts.
その目的を達成するために以下の構成としたも
のである。即ち、内燃機関の回転軸1に金属性フ
ライホイール2を回り止め嵌合し、そのフライホ
イール2に合成樹脂製の冷却フアン4とリコイル
スタータ5の始動用プーリ6とを順次に重ね合せ
て上記回転軸1にねじ込んだナツト7で共締め固
定した内燃機関において、上記フライホイール2
と冷却フアン4とをその重ね合せ部の周縁部で複
数個の突起42とそれに係合する凹部24によ
り、また中央部でフライホイール2に形成した歪
形凸部22とそれに係合する冷却フアン4の穴4
1によりそれぞれ回り止め係止させると共に、始
動用プーリ6をその軸穴61の周辺部で冷却フア
ン4に凹凸係合64・46させ、かつ始動用プー
リ6とフライホイール2とを上記歪形凸部内で凹
凸係合26・62させたことを特徴とする。 In order to achieve this purpose, the following configuration has been adopted. That is, a metallic flywheel 2 is fitted to the rotating shaft 1 of an internal combustion engine so as not to rotate, and a cooling fan 4 made of synthetic resin and a starting pulley 6 of a recoil starter 5 are sequentially superimposed on the flywheel 2. In an internal combustion engine that is fixed together with a nut 7 screwed into the rotating shaft 1, the flywheel 2
and the cooling fan 4 at the periphery of the overlapped portion thereof by a plurality of protrusions 42 and a recess 24 that engages with the protrusions 42, and a distorted convex portion 22 formed on the flywheel 2 at the center and the cooling fan that engages therewith. 4 hole 4
1, the starting pulley 6 is engaged with the cooling fan 4 in the concave and convex portions 64 and 46 around the shaft hole 61, and the starting pulley 6 and the flywheel 2 are connected to the distorted convex shape. It is characterized by having concave and convex engagements 26 and 62 within the portion.
図示例は冷却フアン4のフライホイール2との
重ね合せ部の周縁部に突起42を形成し、それに
係合する凹部24をフライホイール2に形成した
が、フライホイール2に突起を形成し、それに係
合する凹部又は穴を冷却フアン4に形成してもよ
い。 In the illustrated example, a protrusion 42 is formed on the peripheral edge of the overlapped portion of the cooling fan 4 with the flywheel 2, and a recess 24 that engages with the protrusion 42 is formed on the flywheel 2. Engaging recesses or holes may be formed in the cooling fan 4.
またフライホイール2の歪形凹部22は軸穴2
1に対して偏心部を有するものであればよく、図
示例の卵形に限らず長円形・角形等適宜である。 In addition, the distorted recess 22 of the flywheel 2 is located in the shaft hole 2.
It may be any shape as long as it has an eccentric portion with respect to 1, and it is not limited to the oval shape shown in the illustration, but may be any suitable shape such as an oval shape or a rectangular shape.
本考案は上記の構成であるから、フライホイー
ル2と冷却フアン4とがその周縁部の突起42と
凹部24で、また中央部の歪形凸部22と穴41
でそれぞれ回り止め係止されると共に、始動用プ
ーリ6と冷却フアン4、及び始動用プーリ6とフ
ライホイール2とを夫々凹凸係合64・46、2
6・62させたことによつて、フライホイール
2・冷却フアン4・始動用プーリ6の三者が相互
に強固に回り止め結合され、機関の振動等による
がたつきやずれ、及びその繰返しにより固定ナツ
ト7が緩むのを確実に防止できる等の効果があ
る。 Since the present invention has the above-mentioned configuration, the flywheel 2 and the cooling fan 4 are formed by the protrusion 42 and the recess 24 on the periphery, and the distorted protrusion 22 and the hole 41 in the center.
The starting pulley 6 and the cooling fan 4 and the starting pulley 6 and the flywheel 2 are engaged with each other by concave and convex engagements 64, 46, 2, respectively.
6.62, the flywheel 2, cooling fan 4, and starting pulley 6 are firmly connected to each other to prevent rotation, and are prevented from rattling or shifting due to engine vibrations, etc., and from repetition thereof. This has the effect of reliably preventing the fixing nut 7 from loosening.
なお、第1図中8はクランクケース、9はシリ
ンダ、10はフアンカバー、11はリコイルスタ
ータ5のロープリール、12はロープ、13はグ
リツプ、14は上記ロープリール11と始動用プ
ーリ6との間に設けたオーバーランニングクラツ
チのクラツチ爪、15はその爪14の係合孔を示
す。 In FIG. 1, 8 is the crankcase, 9 is the cylinder, 10 is the fan cover, 11 is the rope reel of the recoil starter 5, 12 is the rope, 13 is the grip, and 14 is the connection between the rope reel 11 and the starting pulley 6. The clutch pawl 15 of the overrunning clutch provided therebetween indicates the engagement hole of the pawl 14.
第1図は本考案取付装置により冷却フアンを取
付けた内燃機関の一部の縦断面図、第2図は冷却
フアン及びその周辺部分の分解斜視図である。
1は回転軸(クランクク軸)、2はフライホイ
ール、4は冷却フアン、6は始動用プーリ、7は
ナツト、42は突起、24は凹部、22は歪形凸
部、41は穴、64・46,26・62は凹凸係
合。
FIG. 1 is a longitudinal sectional view of a part of an internal combustion engine to which a cooling fan is attached using the mounting device of the present invention, and FIG. 2 is an exploded perspective view of the cooling fan and its surrounding parts. 1 is a rotating shaft (crankshaft), 2 is a flywheel, 4 is a cooling fan, 6 is a starting pulley, 7 is a nut, 42 is a protrusion, 24 is a recessed part, 22 is a distorted convex part, 41 is a hole, 64. 46, 26 and 62 are uneven engagements.
Claims (1)
り止め嵌合し、そのフライホイールに合成樹脂製
の冷却フアンとリコイルスタータの始動用プーリ
とを順次に重ね合せて上記回転軸にねじ込んだナ
ツトで共締め固定した内燃機関において、 上記フライホイールと冷却フアンとをその重ね
合せ部の周縁部で複数個の突起とそれに係合する
凹部により、また中央部でフライホイールに形成
した歪形凸部とそれに係合する冷却フアンの穴に
よりそれぞれ回り止め係止させると共に、始動用
プーリをその軸穴の周辺部で冷却フアンに凹凸係
合させ、かつ始動用プーリとフライホイールとを
上記歪形凸部内で凹凸係合させたことを特徴とす
る内燃機関の冷却フアン取付装置。[Scope of Claim for Utility Model Registration] A metal flywheel is fitted to the rotating shaft of an internal combustion engine in a non-rotating manner, and a cooling fan made of synthetic resin and a starting pulley of a recoil starter are sequentially superimposed on the flywheel. In an internal combustion engine that is fixed together with a nut screwed into a rotating shaft, the flywheel and cooling fan are connected to each other by a plurality of protrusions and a recess that engage with the protrusions on the periphery of their overlapping part, and to the flywheel in the center. The formed distorted convex portion and the hole of the cooling fan that engages with the convex portion prevent rotation, and the starting pulley is engaged with the cooling fan at the periphery of the shaft hole, and the starting pulley and the flywheel are engaged. A cooling fan mounting device for an internal combustion engine, characterized in that the above-mentioned distorted convex portions are engaged with each other in a concave-convex manner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15811082U JPS5962225U (en) | 1982-10-19 | 1982-10-19 | Internal combustion engine cooling fan mounting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15811082U JPS5962225U (en) | 1982-10-19 | 1982-10-19 | Internal combustion engine cooling fan mounting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5962225U JPS5962225U (en) | 1984-04-24 |
JPS632600Y2 true JPS632600Y2 (en) | 1988-01-22 |
Family
ID=30348402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15811082U Granted JPS5962225U (en) | 1982-10-19 | 1982-10-19 | Internal combustion engine cooling fan mounting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5962225U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0710036Y2 (en) * | 1986-07-24 | 1995-03-08 | 川崎重工業株式会社 | Fan housing fixing mechanism for air-cooled engine |
JP2543987Y2 (en) * | 1988-03-29 | 1997-08-13 | 株式会社 小松製作所 | Power assist device for internal combustion engine |
-
1982
- 1982-10-19 JP JP15811082U patent/JPS5962225U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5962225U (en) | 1984-04-24 |
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