JPH0216014Y2 - - Google Patents
Info
- Publication number
- JPH0216014Y2 JPH0216014Y2 JP4659786U JP4659786U JPH0216014Y2 JP H0216014 Y2 JPH0216014 Y2 JP H0216014Y2 JP 4659786 U JP4659786 U JP 4659786U JP 4659786 U JP4659786 U JP 4659786U JP H0216014 Y2 JPH0216014 Y2 JP H0216014Y2
- Authority
- JP
- Japan
- Prior art keywords
- inner cylinder
- muffler
- cylinder
- exhaust gas
- spot welding
- 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
- 239000000463 material Substances 0.000 claims description 15
- 238000005219 brazing Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は自動二輪車用のマフラーに関する。[Detailed explanation of the idea] (Industrial application field) The present invention relates to a muffler for a motorcycle.
（従来技術）
自動二輪車用のマフラーは、可能な限りエンジ
ン出力を低下させることなく消音効果を高めるよ
うに設計されるが、同時に、この種のマフラーは
燃料タンクと同様自動二輪車を特徴づける一つの
ポイントをなす部分であるため、排気が通過する
部分については、出力特性等の面から望まれる内
部の断面形と、デザインの面から望まれる外部の
断面形のそれぞれを満足させるように二重管とし
て形成され、さらに内筒４の内面には、第４図に
示すように排気ガスの通過部分の断面形を長手方
向に連続的に変化させる板状の内部材５を設け
て、これを特公昭55−51083号公報に示された従
来技術のようにスポツト溶接により一体的に固定
する構造が採られている。(Prior art) Mufflers for motorcycles are designed to increase the noise reduction effect as much as possible without reducing engine output. Since this is a key point, the part through which the exhaust air passes is constructed with double pipes to satisfy both the internal cross-sectional shape desired from the standpoint of output characteristics, etc., and the external cross-sectional shape desired from the design standpoint. Further, on the inner surface of the inner cylinder 4, as shown in FIG. As in the prior art disclosed in Publication No. 55-51083, a structure is adopted in which the parts are integrally fixed by spot welding.
ところが、このように内筒４と内部材５をスポ
ツト溶接により取付けた場合には、溶接部６…に
残存する熱応力や歪等のため、特に２サイクルエ
ンジンの場合には、排気ガスの脈動によつてマフ
ラーが振動し、これがスポツト溶接部６…に亀裂
を生じさせたり、はなはだしい場合には、溶接部
６…の亀裂が進んで内部材５が内筒４から脱落
し、エンジン出力を低下させたり、消音効果を減
少させたりする。 However, when the inner cylinder 4 and the inner member 5 are attached by spot welding in this way, the pulsation of exhaust gas may occur, especially in the case of a two-stroke engine, due to residual thermal stress and strain in the welded parts 6. This causes the muffler to vibrate, which may cause cracks in the spot welds 6, or in severe cases, the cracks in the welds 6 may progress and the internal material 5 may fall off from the inner cylinder 4, reducing engine output. or reduce the silencing effect.
（目的）
本考案はこのような問題に鑑みてなされたもの
で、その目的とするところは、マフラー本来の機
能を長期に保持することのできる強固な自動二輪
車用のマフラーを提供することにある。(Purpose) The present invention was created in view of these problems, and its purpose is to provide a strong muffler for motorcycles that can maintain its original muffler function for a long period of time. .
（目的を達成するための手段）
すなわち本考案はかかる目的を達成するため
に、排気ガス流路の断面を連続的に変化させる板
状の内部材を、内筒内面にスポツト溶接によつて
固着するとともに、内部材の端縁に沿つてろう材
を流し込むことにより、スポツト溶接部の周辺を
ろう付けした自動二輪車用マフラーにある。(Means for achieving the object) That is, in order to achieve the object, the present invention fixes a plate-shaped internal member that continuously changes the cross section of the exhaust gas flow path to the inner surface of the inner cylinder by spot welding. In addition, there is a muffler for a motorcycle in which the periphery of the spot welded part is brazed by pouring a brazing material along the edge of the internal material.
（実施例）
そこで以下に本考案の詳細を図示した実施例に
基づいて説明する。(Example) The details of the present invention will be explained below based on the illustrated example.
第１，２図は本考案の一実施例を示したもの
で、一端にエキゾーストパイプのジヨイント部２
を設けたマフラー本体１は、金属薄内材をもつて
半殻状に形成した一対の外筒３，３と内筒４，４
とにより構成され、外筒３と外筒３内筒４と内筒
４を互いに衝合わせた上、端縁を溶接することに
よつてテーパー状をなすベント管として形成され
る。５は、エンジン出力を可能な限り低下させる
ことなく、しかも十分な消音効果を発揮させるべ
くマフラー１の長手方向に向けてその排気ガス流
路の断面を連続的に変化させるように形成された
板状の内部材で、この内部材５の前後の端部はス
ポツト溶接により半殻状をなす一方の内筒４の内
面に固着されている。そして、さらにこの内部材
５の前後の端部には、その端縁７，７に沿つて第
３，４図に示したように銅系統のろう材８が流し
込まれ、これによつて、内筒４の内面と内部材５
の端縁７の間に形成される段違い部分をろう部材
８により埋め立てて平滑にするとともに、その一
部を両者の間に形成される隙間９内に侵入させ
て、スポツト溶接部６…を一体的にろう付けす
る。 Figures 1 and 2 show an embodiment of the present invention, in which there is a joint part 2 of the exhaust pipe at one end.
The muffler main body 1 includes a pair of outer cylinders 3, 3 and inner cylinders 4, 4, which are formed into a half-shell shape with a thin metal inner material.
It is formed as a tapered bent pipe by abutting an outer cylinder 3, an inner cylinder 4, and an outer cylinder 3 against each other and welding the edges. 5 is a plate formed to continuously change the cross section of the exhaust gas flow path in the longitudinal direction of the muffler 1 in order to exhibit a sufficient noise reduction effect without reducing the engine output as much as possible. The front and rear ends of this internal member 5 are fixed to the inner surface of one half-shell-shaped inner cylinder 4 by spot welding. Further, a copper-based brazing filler metal 8 is poured into the front and rear ends of this internal material 5 along its edges 7, 7 as shown in FIGS. 3 and 4. Inner surface of tube 4 and internal material 5
The uneven part formed between the edges 7 of the parts is filled in with a solder member 8 to make it smooth, and a part of it is inserted into the gap 9 formed between the two parts, so that the spot welded parts 6 are integrated. Braze to target.
したがつて、内筒４の内面にスポツト溶接によ
り固定された内部材５は、内筒４との間に流し込
まれたろう材８によつて溶接部６…を含む面全体
が緊密に固着され、さらに内筒４の内面と内部材
５の間の段部は、埋め込まれたろう材８により平
滑にされて、排気ガスの抵抗を弱めるとともに、
排気ガスから溶接部６…を保護することができ
る。 Therefore, the entire surface of the inner member 5 fixed to the inner surface of the inner cylinder 4 by spot welding, including the welded parts 6, is tightly fixed by the brazing filler metal 8 poured between the inner member 5 and the inner cylinder 4. Furthermore, the stepped portion between the inner surface of the inner cylinder 4 and the inner member 5 is smoothed by the embedded brazing filler metal 8, which weakens the resistance of exhaust gas, and
The welded parts 6 can be protected from exhaust gas.
（効果）
以上述べたように本考案によれば、排気ガス流
路の断面を変化させる板状の内部材を内筒内面に
スポツト溶接するとともに、内部材の端縁に沿つ
てろう材を流し込むことによりスポツト溶接部の
周辺をろう取付けしたので、内部材と内筒を広範
囲に緊密に固着してスポツト溶接部に加わる応力
を分散させて、その破壊を防ぐとともに、内部材
の端縁と内筒との間の段部をろう材により平滑に
なして、排気ガスの部分的な乱れを防ぎ、かつ隙
間へのガスの侵入等を未然に阻止することができ
る。(Effects) As described above, according to the present invention, the plate-shaped internal material that changes the cross section of the exhaust gas flow path is spot welded to the inner surface of the inner cylinder, and the brazing material is poured along the edge of the internal material. As a result, the area around the spot weld was brazed, so the inner material and the inner cylinder were tightly bonded over a wide area, dispersing the stress applied to the spot weld and preventing it from breaking. By making the stepped portion between the cylinder and the cylinder smooth with a brazing material, it is possible to prevent local disturbance of the exhaust gas and to prevent gas from entering the gap.
第１図は本考案に係る自動二輪車用マフラーの
内筒部分の斜視図、第２図は第１図のＡ−Ａ線の
拡大断面図、第３図は一般的な自動二輪車用マフ
ラーの内部を示した図、第４図ａ，ｂは第３図の
Ｂ−Ｂ線及びＣ−Ｃ線の断面図である。
１……マフラー、３……外筒、４……内筒、５
……内部材、６……スポツト溶接部、８……ろう
材。
Figure 1 is a perspective view of the inner cylinder part of the motorcycle muffler according to the present invention, Figure 2 is an enlarged sectional view taken along line A-A in Figure 1, and Figure 3 is the inside of a general motorcycle muffler. FIGS. 4a and 4b are cross-sectional views taken along line B-B and line C-C in FIG. 3. 1...Muffler, 3...Outer cylinder, 4...Inner cylinder, 5
...Internal material, 6... Spot welded part, 8... Brazing metal.
Claims (1)
に形成した板状をなす内部材の端部を、内筒内面
にスポツト溶接によつて固着するとともに、上記
内筒内面と上記内部材の端縁との間に形成される
段違い部分にろう材を充填してなる自動二輪車用
マフラー。 The end of a plate-shaped internal material formed to continuously change the cross section of the exhaust gas flow path is fixed to the inner surface of the inner cylinder by spot welding, and the inner surface of the inner cylinder and the end of the internal material are fixed to the inner surface of the inner cylinder by spot welding. A muffler for motorcycles in which the uneven part formed between the edge and the edge is filled with brazing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4659786U JPH0216014Y2 (en) | 1986-03-28 | 1986-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4659786U JPH0216014Y2 (en) | 1986-03-28 | 1986-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62158119U JPS62158119U (en) | 1987-10-07 |
| JPH0216014Y2 true JPH0216014Y2 (en) | 1990-05-01 |
Family
ID=30866405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4659786U Expired JPH0216014Y2 (en) | 1986-03-28 | 1986-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0216014Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2531644Y2 (en) * | 1989-08-26 | 1997-04-09 | 三恵工業株式会社 | Exhaust system flange joint for vehicles |
| JP2552806Y2 (en) * | 1991-03-29 | 1997-10-29 | 日産ディーゼル工業株式会社 | Automotive exhaust pipe |
-
1986
- 1986-03-28 JP JP4659786U patent/JPH0216014Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62158119U (en) | 1987-10-07 |
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