JPH0240253Y2 - - Google Patents
Info
- Publication number
- JPH0240253Y2 JPH0240253Y2 JP1984195274U JP19527484U JPH0240253Y2 JP H0240253 Y2 JPH0240253 Y2 JP H0240253Y2 JP 1984195274 U JP1984195274 U JP 1984195274U JP 19527484 U JP19527484 U JP 19527484U JP H0240253 Y2 JPH0240253 Y2 JP H0240253Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling air
- cylinder
- cowling
- flange
- inverted
- 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 38
- 238000007789 sealing Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
この考案は、強制空冷エンジンの冷却風シール
装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a cooling air sealing device for a forced air-cooled engine.
小型のエンジンでは、クランク軸の一端に冷却
フアンを連結し、シリンダ及びシリンダヘツドを
冷却風カウリングで覆つて、冷却風を送つて強制
空冷する構造が用いられることがある。一般に、
このような場合には、冷却風カウリングは、シリ
ンダ及びシリンダヘツドの上方から挿入して被着
するようにしている。
In small engines, a structure is sometimes used in which a cooling fan is connected to one end of the crankshaft, the cylinder and cylinder head are covered with a cooling air cowling, and cooling air is sent through for forced air cooling. in general,
In such a case, the cooling air cowling is inserted and attached from above the cylinder and cylinder head.
ところが、シリンダには、外方に導出する排気
孔があるため、冷却風カウリングに逆Ｕ字状の切
欠きを設けて排気孔を通すようにしており、円形
の排気孔と逆Ｕ字状の切欠きによつて隙間がで
き、冷却風が洩れる問題がある。このため、冷却
フアンを大きくして風量を増すと動力損失が多く
なる。 However, since the cylinder has an exhaust hole that leads outward, an inverted U-shaped notch is provided in the cooling air cowling to allow the exhaust hole to pass through. There is a problem in that the notch creates a gap that allows cooling air to leak. For this reason, if the cooling fan is made larger to increase the air volume, power loss will increase.
この考案は、かかる点に鑑み、シリンダの排気
孔に連結する排気管のフランジの形状を冷却風カ
ウリングの逆Ｕ字状切欠きに合せて隙間を無く
し、効率よく冷却できる強制空冷エンジンの冷却
風シール装置を得ることを目的とする。
In view of this, this idea was developed by matching the shape of the flange of the exhaust pipe connected to the cylinder exhaust hole to the inverted U-shaped notch of the cooling air cowling to eliminate gaps, thereby allowing cooling air for forced air-cooled engines to be efficiently cooled. The purpose is to obtain a sealing device.
以下、図面に示すこの考案の実施例について説
明する。
Embodiments of this invention shown in the drawings will be described below.
クランク軸１の一端には、冷却フアン２が連結
されており、フアンカバー３で覆つてある。シリ
ンダ４及びシリンダヘツド５には、冷却風カウリ
ング６が被着される。冷却風カウリング６は、フ
アンカバー３に一側を連結すると共に、他側に冷
却風出口７が設けられている。又、冷却風カウリ
ング６には、その一側面下端に逆Ｕ字状の切欠き
８を設けて、これにシリンダ４の排気孔９の端部
を挿入してその端面と冷却風カウリング６の表面
とが略同一面になるように配設される。 A cooling fan 2 is connected to one end of the crankshaft 1 and covered with a fan cover 3. A cooling air cowling 6 is attached to the cylinder 4 and the cylinder head 5. The cooling air cowling 6 is connected to the fan cover 3 on one side, and has a cooling air outlet 7 on the other side. In addition, the cooling air cowling 6 is provided with an inverted U-shaped notch 8 at the lower end of one side thereof, and the end of the exhaust hole 9 of the cylinder 4 is inserted into the notch 8 so that the end face and the surface of the cooling air cowling 6 are connected. are arranged so that they are substantially on the same plane.
シリンダ４の排気孔９端部に連結する排気管１
０のフランジ１１の下側は、クランクケース１２
に近接するまで延長して延長部１３とされてい
る。そして、冷却風カウリング６の逆Ｕ字状切欠
き８をフランジ１１に合せ、このフランジ１１と
排気孔９端部とをボルト締結して接続することに
より、フランジ１１の延長部１３で逆Ｕ字状切欠
き８の下方部が閉塞されるようになつている。 Exhaust pipe 1 connected to the end of exhaust hole 9 of cylinder 4
The lower side of the flange 11 of 0 is the crankcase 12
The extended portion 13 is extended until it approaches. Then, by aligning the inverted U-shaped notch 8 of the cooling air cowling 6 with the flange 11 and connecting this flange 11 and the end of the exhaust hole 9 with bolts, the extension part 13 of the flange 11 is connected to the inverted U-shaped notch 8. The lower part of the notch 8 is closed.
エンジン運転中は、冷却フアン２が回転して送
風し、冷却風カウリング６内に冷却風を通してシ
リンダ４及びシリンダヘツド５を冷却し、冷却を
終つた暖風は、冷却風出口７から放出される。冷
却風カウリング６は、上方から、シリンダ４及び
シリンダヘツド５に被着し、排気孔９を通すた
め、逆Ｕ字状切欠き８が設けてあるが、排気管１
０のフランジ１１を下方に延長して延長部１３と
し、切欠き８の形状に合せて添えるようにしてあ
るので、隙間が僅かとなつており、冷却風の途中
からの洩れを防ぐことができて、効率よく冷却で
きる。 During engine operation, the cooling fan 2 rotates and blows air, passing the cooling air into the cooling air cowling 6 to cool the cylinder 4 and cylinder head 5. After cooling, the warm air is released from the cooling air outlet 7. . The cooling air cowling 6 is attached to the cylinder 4 and the cylinder head 5 from above, and is provided with an inverted U-shaped notch 8 for passing the exhaust hole 9.
Since the flange 11 of 0 is extended downward to form an extension 13 and attached to the shape of the notch 8, there is a small gap and it is possible to prevent cooling air from leaking from the middle. can be cooled efficiently.
以上説明したように、この考案は、シリンダ及
びシリンダヘツドを冷却風カウリングで覆い、こ
のカウリング内に冷却風を送つてシリンダ及びシ
リンダヘツドを強制空冷する強制空冷エンジンに
おいて、前記冷却風カウリングの一側面下端に逆
Ｕ字状の切欠きを設け、この切欠きにシリンダの
排気孔端部を挿入してこの排気孔端部の端面と冷
却風カウリングの表面とが略同一面になるように
配設し、前記シリンダの排気孔端部に連結する排
気管のフランジをクランクケースに近接するよう
延長して延長部を設け、このフランジで前記逆Ｕ
字状の切欠きを閉塞するようにしたので、冷却風
カウリングに設けられる逆Ｕ字状の切欠きの隙間
を排気管のフランジで塞ぐことができ、冷却風の
途中からの洩れを無くして、効率よく冷却するこ
とができる。そして、冷却風カウリングの脱着も
簡単にでき、部品点数も増すことがなく、安価に
得ることができる。
As explained above, this invention provides a forced air cooling engine in which a cylinder and a cylinder head are covered with a cooling air cowling, and cooling air is sent into the cowling to force air cool the cylinder and the cylinder head. An inverted U-shaped notch is provided at the lower end, and the end of the cylinder exhaust hole is inserted into this notch so that the end face of the exhaust hole end and the surface of the cooling air cowling are approximately on the same plane. The flange of the exhaust pipe connected to the end of the exhaust hole of the cylinder is extended to be close to the crankcase, and an extension part is provided, and this flange is used to connect the inverted U.
Since the shaped notch is closed, the gap between the inverted U-shaped notch provided in the cooling air cowling can be closed with the flange of the exhaust pipe, eliminating the possibility of cooling air leaking from the middle. It can be cooled efficiently. Moreover, the cooling air cowling can be easily attached and detached, and the number of parts does not increase, and it can be obtained at low cost.
図は本考案の一実施例を示し、第１図は全体正
面図、第２図は第１図Ａ矢示部分の拡大図、第３
図は第２図Ｂ−Ｂ矢視図である。
４……シリンダ、５……シリンダヘツド、６…
…冷却風カウリング、８……切欠き、９……排気
孔、１０……排気管、１１……フランジ、１２…
…クランクケース、１３……延長部。
The figures show one embodiment of the present invention, in which Fig. 1 is an overall front view, Fig. 2 is an enlarged view of the part indicated by arrow A in Fig. 1, and Fig. 3 is an enlarged view of the part indicated by arrow A in Fig. 1.
The figure is a view taken along the line B--B in FIG. 4...Cylinder, 5...Cylinder head, 6...
...Cooling air cowling, 8...Notch, 9...Exhaust hole, 10...Exhaust pipe, 11...Flange, 12...
...Crankcase, 13...Extension.
Claims (1)
グで覆い、このカウリング内に冷却風を送つてシ
リンダ及びシリンダヘツドを強制空冷する強制空
冷エンジンにおいて、前記冷却風カウリングの一
側面下端に逆Ｕ字状の切欠きを設け、この切欠き
にシリンダの排気孔端部を挿入してこの排気孔端
部の端面と冷却風カウリングの表面とが略同一面
になるように配設し、前記シリンダの排気孔端部
に連結する排気管のフランジをクランクケースに
近接するよう延長して延長部を設け、このフラン
ジで前記逆Ｕ字状の切欠きを閉塞したことを特徴
とする強制空冷エンジンの冷却風シール装置。 In a forced air-cooled engine in which the cylinder and cylinder head are covered with a cooling air cowling and cooling air is sent into the cowling to cool the cylinder and cylinder head, an inverted U-shaped notch is provided at the lower end of one side of the cooling air cowling. The exhaust hole end of the cylinder is inserted into this notch, and the end face of the exhaust hole end and the surface of the cooling air cowling are arranged on the same plane. A cooling air sealing device for a forced air-cooled engine, characterized in that a flange of a connected exhaust pipe is extended to be close to a crankcase to provide an extension part, and the inverted U-shaped notch is closed with this flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984195274U JPH0240253Y2 (en) | 1984-12-25 | 1984-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984195274U JPH0240253Y2 (en) | 1984-12-25 | 1984-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61110829U JPS61110829U (en) | 1986-07-14 |
| JPH0240253Y2 true JPH0240253Y2 (en) | 1990-10-26 |
Family
ID=30752786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984195274U Expired JPH0240253Y2 (en) | 1984-12-25 | 1984-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240253Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822461U (en) * | 1981-08-06 | 1983-02-12 | マツダ株式会社 | Injection characteristics control device for fuel injection pump for diesel engine |
| JPS5816831B2 (en) * | 1978-06-30 | 1983-04-02 | 株式会社田村電機製作所 | Coin monitoring system for public telephones |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637051Y2 (en) * | 1976-03-11 | 1981-08-31 | ||
| JPS57100683U (en) * | 1980-12-10 | 1982-06-21 | ||
| JPS5816831U (en) * | 1981-07-27 | 1983-02-02 | 株式会社日立製作所 | Cabinet seal structure |
-
1984
- 1984-12-25 JP JP1984195274U patent/JPH0240253Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816831B2 (en) * | 1978-06-30 | 1983-04-02 | 株式会社田村電機製作所 | Coin monitoring system for public telephones |
| JPS5822461U (en) * | 1981-08-06 | 1983-02-12 | マツダ株式会社 | Injection characteristics control device for fuel injection pump for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61110829U (en) | 1986-07-14 |
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