JPH0313528Y2 - - Google Patents
Info
- Publication number
- JPH0313528Y2 JPH0313528Y2 JP1984132936U JP13293684U JPH0313528Y2 JP H0313528 Y2 JPH0313528 Y2 JP H0313528Y2 JP 1984132936 U JP1984132936 U JP 1984132936U JP 13293684 U JP13293684 U JP 13293684U JP H0313528 Y2 JPH0313528 Y2 JP H0313528Y2
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- silencer
- plate
- heat
- outer 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
- 229910000831 Steel Inorganic materials 0.000 claims description 66
- 239000010959 steel Substances 0.000 claims description 66
- 230000003584 silencer Effects 0.000 claims description 47
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、エンジンのサイレンサー構造の改善
に関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the silencer structure of an engine.
（従来の技術）
従来、エンジンの排気系に配設されるサイレン
サーは、２枚の鋼板で形成された筒状のサイレン
サー本体と、該サイレンサー本体の端部開口を閉
塞する端板とを有し、該端板を上記サイレンサー
本体にカシメ結合することによつて形成されてい
た（例えば、実開昭57−142124号公報参照）。(Prior Art) Conventionally, a silencer installed in an engine exhaust system has a cylindrical silencer body formed of two steel plates and an end plate that closes an opening at an end of the silencer body. , by caulking the end plate to the silencer body (see, for example, Japanese Utility Model Application Publication No. 142124/1983).
（考案が解決しようとする課題）
しかしながら、上記構造においては、サイレン
サー本体が２枚の鋼板により形成されるため、断
熱吸音効果を得ることができる反面、重量が重く
なるという問題があつた。この問題を解消するに
あたつて、サイレンサーを形成する部材のうち比
較的強度の必要としないサイレンサー本体の外筒
を、鋼板より比重の小さいアルミ合金板で形成す
ることが考えられる。しかし、単に、アルミ合金
板を用いると、該アルミ合金板は鋼板とは熱膨張
率が大きく異なるために、高温時に該アルミ合金
板が変形し、シール性が悪化すると共に、該アル
ミ合金板は熱伝導率が良いため、外部へ排気熱を
高温のまま放出することになり、熱害を生じると
いう問題がある。(Problems to be Solved by the Invention) However, in the above structure, since the silencer main body is formed of two steel plates, although it is possible to obtain a heat-insulating sound-absorbing effect, there is a problem in that the weight becomes heavy. In order to solve this problem, it is conceivable to form the outer cylinder of the silencer main body, which does not require relatively high strength among the members forming the silencer, from an aluminum alloy plate having a smaller specific gravity than a steel plate. However, if an aluminum alloy plate is simply used, the aluminum alloy plate has a coefficient of thermal expansion that is significantly different from that of a steel plate, so the aluminum alloy plate deforms at high temperatures, deteriorating the sealing performance, and the aluminum alloy plate Due to its good thermal conductivity, exhaust heat is released outside at a high temperature, causing heat damage.
本考案は、上記の問題点に鑑みてなされたもの
であり、熱害を生じることなく、かつ軽量化が図
れるサイレンサー構造を提供することを目的とす
る。 The present invention has been made in view of the above-mentioned problems, and aims to provide a silencer structure that does not cause heat damage and is lightweight.
（課題を解決するための手段）
上記目的の達成のため、本考案の解決手段は、
エンジンの排気系に配設されるサイレンサーとし
て、鋼板で形成された内筒と、該鋼板より比重の
小さいアルミ合金板で形成された外筒と、該内筒
と外筒との間の全範囲に渡つて充填された断熱吸
音部材とを一体化してなるサイレンサー本体を備
えるとともに、内鋼板と、外鋼板と、該内鋼板と
外鋼板との間に充填された断熱吸音部材とを一体
化してなり、上記サイレンサー本体の端部開口を
閉塞する端板を備える。上記端板は、その周端部
が上記サイレンサー本体の端部を挾み込むように
断面略コ字状に形成されているとともに、該端板
の断熱吸音部材はサイレンサー本体の端部開口の
内周付近まで充填されていて、それよりも周端側
は内鋼板と外鋼板とが重ね合されており、この内
鋼板と外鋼板とが重合された端板周端部はサイレ
ンサー本体の端縁とは空隙をもつて断面略コ字状
に屈曲してサイレンサー本体の外筒上まで延出さ
れたのち、内鋼板の端部は該外筒上で外鋼板の端
部によつて回り込まれており、該外鋼板の端部が
上記外筒に当接した状態でサイレンサー本体にカ
シメ結合されているものとする。(Means for solving the problem) In order to achieve the above purpose, the solution of the present invention is as follows:
As a silencer installed in the exhaust system of an engine, there is an inner cylinder made of a steel plate, an outer cylinder made of an aluminum alloy plate with a smaller specific gravity than the steel plate, and the entire range between the inner cylinder and the outer cylinder. The silencer body is provided with a silencer body formed by integrating a heat-insulating sound-absorbing member filled with the inner steel plate, an outer steel plate, and a heat-insulating sound-absorbing member filled between the inner steel plate and the outer steel plate. and includes an end plate that closes the end opening of the silencer main body. The end plate has a substantially U-shaped cross section so that its circumferential edge fits into the end of the silencer body, and the heat-insulating sound-absorbing member of the end plate is located inside the end opening of the silencer body. It is filled up to the vicinity of the periphery, and the inner steel plate and outer steel plate are overlapped on the peripheral edge side, and the peripheral edge of the end plate where the inner steel plate and the outer steel plate are overlapped is the edge of the silencer body. The inner steel plate is bent into a generally U-shaped cross section with a gap and extended to the top of the outer cylinder of the silencer body, and then the end of the inner steel plate is wrapped around the outer cylinder by the end of the outer steel plate. The end portion of the outer steel plate is caulked to the silencer main body in a state in which it is in contact with the outer cylinder.
（作用）
これにより、本考案では、サイレンサー本体の
内筒から外筒への熱伝達は、両者間の全範囲に充
填された断熱吸音部材により阻止される。一方、
上記範囲の内鋼板から外筒への熱伝達は、熱が内
鋼板端部に至るまでに、大部分が端板周端側で重
ね合つている外鋼板を介して大気に放熱されると
共に上記空隙により外筒へ熱伝導することもな
く、また該内鋼板端部に至る熱に対しても、常時
大気に開放されて温度の低い外鋼板端部を回り込
ませたことにより、外筒に至るまでの熱を該外鋼
板端部が吸収して大気に放熱する。従つて、外筒
へ伝達される熱は著しく低下する。(Function) Accordingly, in the present invention, heat transfer from the inner cylinder to the outer cylinder of the silencer main body is blocked by the heat insulating sound absorbing member filled in the entire range between the two. on the other hand,
Heat transfer from the inner steel plate to the outer cylinder in the above range is such that before the heat reaches the end of the inner steel plate, most of the heat is radiated to the atmosphere via the outer steel plate that overlaps on the peripheral edge of the end plate, and the heat is radiated to the atmosphere as described above. There is no heat conduction to the outer cylinder due to the air gap, and the heat that reaches the end of the inner steel plate is routed around the outer steel plate end, which is always open to the atmosphere and has a low temperature, so that it does not reach the outer cylinder. The edges of the outer steel plate absorb the heat and radiate it to the atmosphere. Therefore, the heat transferred to the outer cylinder is significantly reduced.
（考案の効果）
本考案は、以上のように構成されるため、サイ
レンサー本体の内筒から外筒への熱伝達は、断熱
吸音部材で阻止されると共に、端板の内鋼板から
外筒への熱伝達は、熱が内鋼板端部に至るまでに
大部分が外鋼板を介して大気に放熱され、かつ外
筒への熱伝導もなく、また内鋼板端部に至る熱に
対しても、常時大気に開放されて温度の低い外鋼
板端部を回り込ませたことで、外筒に至るまでに
熱を該外鋼板端部が吸収して大気に放熱すること
ができるので、上記外筒にアルミ合金板を用いて
も熱害を生じることがなくなり、サイレンサーの
強度の低下を極力防止しながら軽量化が図れる。(Effects of the invention) Since the present invention is constructed as described above, heat transfer from the inner cylinder to the outer cylinder of the silencer body is prevented by the heat insulating sound absorbing member, and from the inner steel plate of the end plate to the outer cylinder. In this heat transfer, most of the heat is radiated to the atmosphere through the outer steel plate before reaching the edge of the inner steel plate, and there is no heat conduction to the outer cylinder, and there is no heat transfer to the edge of the inner steel plate. By making the outer steel plate end part, which is always open to the atmosphere and has a low temperature, go around, the outer steel plate end part can absorb heat before reaching the outer cylinder and radiate the heat to the atmosphere. Even if an aluminum alloy plate is used for the silencer, heat damage will not occur, and the weight of the silencer can be reduced while preventing a decrease in strength as much as possible.
（実施例）
以下、本考案の実施例を図面に基づいて説明す
る。第１図において、サイレンサー１は、サイレ
ンサー本体２と、該サイレンサー本体２の端部開
口２ｃを閉塞する端板４とによつて構成されてい
る。上記サイレンサー本体２は、鋼板で形成され
た内筒２ａと、該鋼板より比重の小さいアルミ板
で形成された外筒２ｂと、該内筒２ａと外筒２ｂ
との間の全範囲に渡つて充填された断熱吸音部材
３とを一体化して形成されている。また、上記端
板４は、内鋼板４ａと、外鋼板４ｂと、該内鋼板
４ａと外鋼板４ｂとの間に充填された断熱吸音部
材３とを一体化して形成されている。上記サイレ
ンサー本体２に対して、端板４は、第２図に示す
ように、その周端部が上記サイレンサー本体２の
端部を挾み込むように断面略コ字状に形成されて
いるとともに、該端板４の断熱吸音部材３はサイ
レンサー本体２の端部開口２ｃの内周付近まで充
填されていて、それよりも周端側は内鋼板４ａと
外鋼板４ｂとが重ね合されており、この内鋼板４
ａと外鋼板４ｂとが重合された端板４周端部はサ
イレンサー本体２の端縁とは空隙をもつて断面略
コ字状に屈曲してサイレンサー本体２の外筒２ｂ
上まで延出されたのち、内鋼板端部４a′は該外筒
２ｂ上で外鋼板端部４b′によつて回り込まれてお
り、該外鋼板端部４b′が上記外筒２ｂに当接した
状態でカシメ結合されている。尚、５はサイレン
サー本体２に排気ガスを導入する導入管、６はサ
イレンサー本体２内に導入された排気ガスを排出
する排出管である。(Example) Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, a silencer 1 includes a silencer main body 2 and an end plate 4 that closes an end opening 2c of the silencer main body 2. As shown in FIG. The silencer main body 2 includes an inner cylinder 2a formed of a steel plate, an outer cylinder 2b formed of an aluminum plate having a specific gravity smaller than that of the steel plate, and the inner cylinder 2a and the outer cylinder 2b.
It is integrally formed with a heat insulating and sound absorbing member 3 filled over the entire range between. Further, the end plate 4 is formed by integrating an inner steel plate 4a, an outer steel plate 4b, and a heat insulating sound absorbing member 3 filled between the inner steel plate 4a and the outer steel plate 4b. As shown in FIG. 2, the end plate 4 of the silencer main body 2 is formed to have a substantially U-shaped cross section so that its peripheral end fits into the end of the silencer main body 2. The heat-insulating sound-absorbing member 3 of the end plate 4 is filled up to the vicinity of the inner periphery of the end opening 2c of the silencer main body 2, and the inner steel plate 4a and the outer steel plate 4b are overlapped on the peripheral end side. , this inner steel plate 4
The peripheral end of the end plate 4 where the outer steel plate 4a and the outer steel plate 4b are overlapped is bent into a substantially U-shaped cross section with a gap from the end edge of the silencer main body 2 to form the outer cylinder 2b of the silencer main body 2.
After being extended to the top, the inner steel plate end 4a' is wrapped around the outer steel plate end 4b' on the outer cylinder 2b, and the outer steel plate end 4b' comes into contact with the outer cylinder 2b. It is caulked and joined in the state that it is attached. Note that 5 is an introduction pipe for introducing exhaust gas into the silencer main body 2, and 6 is an exhaust pipe for discharging the exhaust gas introduced into the silencer main body 2.
以上のように構成されるため、サイレンサー本
体２の内筒２ａから外筒２ｂへの熱伝達は、その
間の全範囲に設けた断熱吸音部材３により阻止さ
れる。一方、上記端板４の内鋼板４ａから外筒２
ｂへの熱伝達は、熱が内鋼板端部４a′に至るまで
に、大部分が端板４周端側で重合されている外鋼
板４ｂを介して大気に放熱されると共に上記空隙
により外筒２ｂへ熱伝達することがなく、また、
該内鋼板端部４a′に至る熱に対しても、常時大気
に開放されて温度の低い外鋼板端部４b′を回り込
ませたことで、外筒２ｂに至るまでに熱を該外鋼
板端部４b′が吸収して大気に放熱する。つまり、
外筒２ｂへ伝達される熱は著しく低下し、該外筒
２ｂにアルミ板を用いても変形することなく、ア
ルミ板を外筒２ｂのみに用いることで、サイレン
サー１の強度の低下を極力防止しながら、サイレ
ンサー１の軽量化を図ることができる。 With the above configuration, heat transfer from the inner cylinder 2a of the silencer main body 2 to the outer cylinder 2b is blocked by the heat insulating sound absorbing member 3 provided in the entire range therebetween. On the other hand, from the inner steel plate 4a of the end plate 4 to the outer cylinder 2
Before the heat reaches the inner steel plate end 4a', most of the heat is radiated to the atmosphere through the outer steel plate 4b, which is overlapped at the peripheral end of the end plate 4, and is also transferred to the outside by the above-mentioned air gap. There is no heat transfer to the cylinder 2b, and
By passing the heat reaching the inner steel plate end 4a' through the outer steel plate end 4b', which is always open to the atmosphere and having a low temperature, the heat is transferred to the outer steel plate end 4b' before reaching the outer cylinder 2b. The portion 4b' absorbs the heat and radiates it to the atmosphere. In other words,
The heat transferred to the outer cylinder 2b is significantly reduced, and there is no deformation even if an aluminum plate is used for the outer cylinder 2b. By using an aluminum plate only for the outer cylinder 2b, a decrease in the strength of the silencer 1 is prevented as much as possible. At the same time, the weight of the silencer 1 can be reduced.
第１図及び第２図は、本考案の実施例を示した
ものであり、第１図はサイレンサーの断面図、第
２図は要部拡大図である。
２……サイレンサー本体、２ａ……内筒（鋼
板）、２ｂ……外筒（アルミ板）、３……断熱吸音
部材、４……端板、４ａ……内鋼板、４ｂ……外
鋼板、４a′……内鋼板端部、４b′……外鋼板端
部。
1 and 2 show an embodiment of the present invention, with FIG. 1 being a cross-sectional view of the silencer, and FIG. 2 being an enlarged view of the main parts. 2... Silencer body, 2a... Inner tube (steel plate), 2b... Outer tube (aluminum plate), 3... Heat insulation sound absorbing member, 4... End plate, 4a... Inner steel plate, 4b... Outer steel plate, 4a'...End of inner steel plate, 4b'...End of outer steel plate.
Claims (1)
おいて、 鋼板で形成された内筒と、該鋼板より比重の小
さいアルミ合金板で形成された外筒と、該内筒と
外筒との間の全範囲に渡つて充填された断熱吸音
部材とを一体化してなるサイレンサー本体と、 内鋼板と、外鋼板と、該内鋼板と外鋼板との間
に充填された断熱吸音部材とを一体化してなり、
上記サイレンサー本体の端部開口を閉塞する端板
とを備え、 上記端板は、その周端部が上記サイレンサー本
体の端部を挾み込むように断面略コ字状に形成さ
れているとともに、該端板の断熱吸音部材はサイ
レンサー本体の端部開口の内周付近まで充填され
ていて、それよりも周端側は内鋼板と外鋼板とが
重ね合されており、この内鋼板と外鋼板とが重合
された端板周端部はサイレンサー本体の端縁とは
空隙をもつて断面略コ字状に屈曲してサイレンサ
ー本体の外筒上まで延出されたのち、内鋼板の端
部は該外筒上で外鋼板の端部によつて回り込まれ
ており、該外鋼板の端部が上記外筒に当接した状
態でサイレンサー本体にカシメ結合されているこ
とを特徴とするエンジンのサイレンサー構造。[Scope of Claim for Utility Model Registration] A silencer installed in the exhaust system of an engine includes: an inner cylinder made of a steel plate; an outer cylinder made of an aluminum alloy plate with a smaller specific gravity than the steel plate; A silencer body formed by integrating a heat-insulating sound-absorbing member filled over the entire range between the outer cylinder, an inner steel plate, an outer steel plate, and a heat-insulating sound-absorbing member filled between the inner steel plate and the outer steel plate. By integrating the parts,
an end plate that closes an opening at the end of the silencer main body, the end plate having a substantially U-shaped cross section so that its peripheral end fits into the end of the silencer main body; The heat-insulating sound-absorbing member of the end plate is filled up to the vicinity of the inner periphery of the end opening of the silencer body, and the inner steel plate and the outer steel plate are overlapped on the peripheral edge side. The circumferential edge of the end plate where these are overlapped with each other is bent into a substantially U-shaped cross section with a gap from the edge of the silencer body, and extends above the outer cylinder of the silencer body, and then the end of the inner steel plate is A silencer for an engine, which is wrapped around the outer cylinder by an end of an outer steel plate, and is caulked to the silencer body with the end of the outer steel plate in contact with the outer cylinder. structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13293684U JPS6147419U (en) | 1984-08-31 | 1984-08-31 | Engine silencer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13293684U JPS6147419U (en) | 1984-08-31 | 1984-08-31 | Engine silencer structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6147419U JPS6147419U (en) | 1986-03-29 |
| JPH0313528Y2 true JPH0313528Y2 (en) | 1991-03-27 |
Family
ID=30691491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13293684U Granted JPS6147419U (en) | 1984-08-31 | 1984-08-31 | Engine silencer structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6147419U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238534B2 (en) * | 1974-11-01 | 1977-09-29 | ||
| JPS5742112B2 (en) * | 1977-09-21 | 1982-09-07 | ||
| JPS5846820B2 (en) * | 1979-08-27 | 1983-10-19 | 株式会社東芝 | Rotating anode target for X-ray tube and manufacturing method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840247Y2 (en) * | 1975-09-11 | 1983-09-10 | 日野自動車株式会社 | Rainbow maki muffler |
| JPS621382Y2 (en) * | 1980-02-08 | 1987-01-13 | ||
| JPS5742112U (en) * | 1980-08-12 | 1982-03-08 | ||
| JPS5846820U (en) * | 1981-09-25 | 1983-03-29 | 三恵技研工業株式会社 | Silencer |
-
1984
- 1984-08-31 JP JP13293684U patent/JPS6147419U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238534B2 (en) * | 1974-11-01 | 1977-09-29 | ||
| JPS5742112B2 (en) * | 1977-09-21 | 1982-09-07 | ||
| JPS5846820B2 (en) * | 1979-08-27 | 1983-10-19 | 株式会社東芝 | Rotating anode target for X-ray tube and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6147419U (en) | 1986-03-29 |
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