JPH0117640Y2 - - Google Patents
Info
- Publication number
- JPH0117640Y2 JPH0117640Y2 JP1982123779U JP12377982U JPH0117640Y2 JP H0117640 Y2 JPH0117640 Y2 JP H0117640Y2 JP 1982123779 U JP1982123779 U JP 1982123779U JP 12377982 U JP12377982 U JP 12377982U JP H0117640 Y2 JPH0117640 Y2 JP H0117640Y2
- Authority
- JP
- Japan
- Prior art keywords
- muffler
- gasket
- cooling air
- muffler gasket
- cylinder
- 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 19
- 239000003779 heat-resistant material Substances 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 239000007858 starting material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
- Gasket Seals (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は２サイクルエンジンのマフラガスケツ
トに関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a muffler gasket for a two-stroke engine.
（従来の技術）
第１図は従来の２サイクルエンジンの要部をリ
コイルスタータ側から見た説明図、第２図は第１
図の−矢視断面図である。図において、１は
シリンダで、排気ポート２には、アスベスト製の
ガスケツト３、アルミ製または鉄製の遮熱板４を
介して、マフラ５がボルト６等により取付けられ
ている。図示せぬフライホイールによつて発生し
た冷却風は導風板を兼ねたエンジンカバー７によ
つて案内されてシリンダ１周辺を通過するが、こ
の際シリンダ１方向へ冷却風を導くために、遮熱
板４の下端部４ａはシリンダ１方向へ曲げられる
と共に、マフラ５からの熱を遮断するために、遮
熱板４の巾はシリンダ１の巾とほぼ等しい巾を有
する。(Prior art) Figure 1 is an explanatory diagram of the main parts of a conventional two-stroke engine viewed from the recoil starter side, and Figure 2 is an illustration of the main parts of a conventional two-stroke engine.
It is a sectional view taken along the - arrow in the figure. In the figure, reference numeral 1 denotes a cylinder, and a muffler 5 is attached to an exhaust port 2 with bolts 6 or the like via a gasket 3 made of asbestos and a heat shield plate 4 made of aluminum or iron. Cooling air generated by a flywheel (not shown) is guided by the engine cover 7, which also serves as a baffle plate, and passes around the cylinder 1. At this time, in order to guide the cooling air toward the cylinder 1, there is a The lower end 4a of the heat plate 4 is bent toward the cylinder 1, and the width of the heat shield plate 4 is approximately equal to the width of the cylinder 1 in order to block heat from the muffler 5.
（考案が解決しようとする課題）
前述のような従来技術には次のような問題点が
ある。(Problems to be solved by the invention) The prior art as described above has the following problems.
(1) 遮熱板４によつて冷却風をシリンダ１へ案内
すると共に、マフラ５からの熱を遮断している
が、エンジンカバー７と遮熱板４との間に、第
２図に示す道路８が形成されているため、冷却
風ガイド及び遮熱の効果が不充分である。(1) Although the heat shield plate 4 guides cooling air to the cylinder 1 and blocks heat from the muffler 5, there is a space between the engine cover 7 and the heat shield plate 4 as shown in FIG. Since the road 8 is formed, the cooling air guide and heat shielding effects are insufficient.
(2) ガスケツト及び遮熱板４の部品点数が３点
で、組立工数、部品点数が多い。(2) The number of parts for the gasket and heat shield plate 4 is three, which requires a large number of assembly man-hours and parts.
本考案は、上記の問題点を排除し、冷却風ガイ
ドと遮熱板とを兼ねたマフラガスケツトを提供す
ることを目的とするものである。 The object of the present invention is to eliminate the above-mentioned problems and provide a muffler gasket that serves both as a cooling air guide and a heat shield.
（課題を解決するための手段）
マフラガスケツトを排気管フランジ面とほヾ平
行する方向で、エンジンカバー、フアンカバー等
の導風板に近接する位置まで延長する。マフラガ
スケツトの下端縁をシリンダ側に折曲げ、冷却風
に対する案内部を形成する。マフラガスケツトを
アスベスト中にワイヤを織り込んで構成する。(Means for solving the problem) Extend the muffler gasket in a direction almost parallel to the exhaust pipe flange surface to a position close to the air guide plate of the engine cover, fan cover, etc. Bend the lower edge of the muffler gasket toward the cylinder to form a guide for cooling air. The muffler gasket is constructed by weaving wire into asbestos.
（作用）
エンジンカバーと遮熱板との間に、第２図に示
すような通路８が存在しないので、冷却風による
冷却作用が向上する。マフラガスケツトの下端縁
をシリンダ側に折曲げることにより、冷却風がシ
リンダの方向に導びかれる。(Function) Since there is no passage 8 as shown in FIG. 2 between the engine cover and the heat shield plate, the cooling effect of the cooling air is improved. By bending the lower edge of the muffler gasket toward the cylinder, cooling air is guided toward the cylinder.
（実施例）
第３図、第４図を参照して、本考案による実施
例につき説明する。(Example) An example according to the present invention will be described with reference to FIGS. 3 and 4.
第３図は本考案によるマフラガスケツトを装着
した２サイクルエンジンの要部をリコイルスター
タ側から見た説明図、第４図は第３図の−矢
視断面図である。 FIG. 3 is an explanatory view of the essential parts of a two-stroke engine equipped with a muffler gasket according to the present invention, viewed from the recoil starter side, and FIG. 4 is a sectional view taken along the - arrow in FIG. 3.
図において、１はシリンダ、２は排気ポート、
５はマフラ、６はボルトであり、従来例を示す第
１図、第２図と同一部材である。 In the figure, 1 is the cylinder, 2 is the exhaust port,
5 is a muffler, and 6 is a bolt, which are the same members as in FIGS. 1 and 2 showing the conventional example.
１１はマフラガスケツトで、アスベスト中にワ
イヤを織り込んで成形されたもので、下端縁をシ
リンダ１側に屈曲させて、冷却風をシリンダ１に
案内するための案内部１１ａを形成している。同
マフラガスケツトは排気管フランジ面とほヾ平行
な方向に拡張され、上部側端縁はエンジンカバー
１２及びフアンカバー１３に近接して配置され
る。 Reference numeral 11 denotes a muffler gasket, which is molded by weaving wire into asbestos, and has a lower edge bent toward the cylinder 1 to form a guide portion 11a for guiding cooling air to the cylinder 1. The muffler gasket is expanded in a direction substantially parallel to the exhaust pipe flange surface, and its upper edge is disposed close to the engine cover 12 and fan cover 13.
フアンカバー１３は、エンジンカバー１２と別
体構造となつているが、エンジンカバー１２と一
緒になつて冷却風を導く導風板を構成し、図示せ
ぬフライホイール等を収容する。 The fan cover 13 has a separate structure from the engine cover 12, but together with the engine cover 12 constitutes a baffle plate that guides cooling air, and accommodates a flywheel (not shown) and the like.
（考案の効果）
本考案による２サイクルエンジンのマフラガス
ケツトは、排気ポートとマフラとの間に装着され
るマフラガスケツトにおいて、マフラガスケツト
を形状保持機能を有する耐熱材料により構成し、
同マフラガスケツトを排気管フランジ面とほヾ平
行な方向で、エンジンカバー、フアンカバー等の
導風板に近接する位置まで拡張し、且つ同マフラ
ガスケツトの下端縁をシリンダ側に屈曲させて冷
却風を案内する案内部を形成して、冷却風ガイド
と導熱板とを兼用したことにより、次の効果を生
ずる。(Effects of the invention) The muffler gasket for a two-stroke engine according to the invention is a muffler gasket installed between an exhaust port and a muffler, and the muffler gasket is made of a heat-resistant material that has a shape-retaining function.
The muffler gasket is extended in a direction almost parallel to the exhaust pipe flange surface to a position close to the air guide plate of the engine cover, fan cover, etc., and the lower edge of the muffler gasket is bent toward the cylinder side. By forming a guide portion for guiding cooling air and serving both as a cooling air guide and a heat conduction plate, the following effects are produced.
(1) 冷却風がマフラ側に回り込まないので、冷却
性能が向上する。(1) Cooling air does not go around to the muffler side, improving cooling performance.
(2) 冷却風がマフラガスケツトの案内部によりシ
リンダ側に導かれるので、冷却性能が向上す
る。(2) Cooling air is guided to the cylinder side by the guide part of the muffler gasket, improving cooling performance.
(3) 従来の遮熱板とガスケツトが一体構造となる
ので、部品点数が減少し、組立工数も低減す
る。(3) Since the conventional heat shield plate and gasket are integrated, the number of parts and assembly steps are reduced.
第１図は従来の２サイクルエンジンの要部をリ
コイルスタータ側から見た説明図、第２図は第１
図の−矢視断面図、第３図は本考案による１
実施例のマフラガスケツトを装着した２サイクル
エンジンの要部をリコイルスタータ側から見た説
明図、第４図は第３図の−矢視断面図であ
る。
２……排気ポート、５……マフラ、１１……マ
フラガスケツト、１１ａ……案内部、１２……エ
ンジンカバー、１３……フアンカバー。
Figure 1 is an explanatory diagram of the main parts of a conventional two-stroke engine viewed from the recoil starter side, and Figure 2 is an explanatory diagram of the main parts of a conventional two-stroke engine, as seen from the recoil starter side.
A sectional view taken along the - arrow in the figure, Figure 3 is 1 according to the present invention.
FIG. 4 is an explanatory view of the essential parts of a two-stroke engine equipped with the muffler gasket of the embodiment, viewed from the recoil starter side. FIG. 4 is a sectional view taken along the - arrow in FIG. 3. 2... Exhaust port, 5... Muffler, 11... Muffler gasket, 11a... Guide portion, 12... Engine cover, 13... Fan cover.
Claims (1)
ガスケツトにおいて、マフラガスケツトを形状保
持機能を有する耐熱材料により構成し、同マフラ
ガスケツトを排気管フランジ面とほヾ平行な方向
でエンジンカバー、フアンカバー等の導風板に近
接する位置まで拡張し、且つ同マフラガスケツト
の下端縁をシリンダ側に屈曲させて冷却風を案内
する案内部を形成して、冷却風ガイドと遮熱板と
を兼用したことを特徴とする２サイクルエンジン
のマフラガスケツト。 In the muffler gasket installed between the exhaust port and the muffler, the muffler gasket is made of a heat-resistant material that has a shape-retaining function, and the muffler gasket is attached to the engine cover in a direction approximately parallel to the exhaust pipe flange surface. The muffler gasket is extended to a position close to the air guide plate such as the fan cover, and the lower edge of the muffler gasket is bent toward the cylinder side to form a guide portion that guides the cooling air, thereby connecting the cooling air guide and the heat shield plate. A muffler gasket for a 2-stroke engine that is characterized by its dual use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12377982U JPS5928651U (en) | 1982-08-17 | 1982-08-17 | 2-stroke engine muffler gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12377982U JPS5928651U (en) | 1982-08-17 | 1982-08-17 | 2-stroke engine muffler gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5928651U JPS5928651U (en) | 1984-02-22 |
| JPH0117640Y2 true JPH0117640Y2 (en) | 1989-05-23 |
Family
ID=30282422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12377982U Granted JPS5928651U (en) | 1982-08-17 | 1982-08-17 | 2-stroke engine muffler gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5928651U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149819U (en) * | 1984-03-15 | 1985-10-04 | スズキ株式会社 | Internal combustion engine manifold gasket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099496A (en) * | 1975-10-27 | 1978-07-11 | Honda Giken Kogyo Kabushiki Kaisha | Carburetor heat shield |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843639Y2 (en) * | 1978-01-24 | 1983-10-03 | 本田技研工業株式会社 | Valve stem cooling air passage of side valve type engine |
-
1982
- 1982-08-17 JP JP12377982U patent/JPS5928651U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099496A (en) * | 1975-10-27 | 1978-07-11 | Honda Giken Kogyo Kabushiki Kaisha | Carburetor heat shield |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5928651U (en) | 1984-02-22 |
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