JPS63976Y2 - - Google Patents
Info
- Publication number
- JPS63976Y2 JPS63976Y2 JP1981070130U JP7013081U JPS63976Y2 JP S63976 Y2 JPS63976 Y2 JP S63976Y2 JP 1981070130 U JP1981070130 U JP 1981070130U JP 7013081 U JP7013081 U JP 7013081U JP S63976 Y2 JPS63976 Y2 JP S63976Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- muffler
- partition plate
- welded
- wide
- 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
- 238000005192 partition Methods 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
この考案は、オートバイ等に搭載する小型内燃
機関のマフラに関する。[Detailed Description of the Invention] This invention relates to a muffler for a small internal combustion engine mounted on a motorcycle or the like.
オートバイ等の内燃機関には、筒形で長いマフ
ラが用いられる。マフラは、外筒を末広に成形し
たもの、或は鋼板を左右に分けてプレス成形した
ものを最中状に合せて溶着したものが用いられ
る。そして、内部を仕切板で適宜間隔に仕切つて
消音室を複数個設ける。仕切板は外筒に溶着する
が、プレス成形した最中状のものでは、先に挿入
して溶着するので、片側半分しか溶着できない。
又管状の外筒の場合は後端から挿入するので、全
周溶着できるが、マフフ外筒はメツキ仕上げする
ので、外側の見える部分も溶着すると溶着痕が残
り体裁が悪くなり、そのため内側の見えない部分
半分を溶着する。したがつて仕切板の固定が十分
でなく、振動が発生したり、シール性が不充分で
ガス洩れにより消音効果が低下する。 Internal combustion engines such as motorcycles use long cylindrical mufflers. The muffler used is one in which the outer cylinder is formed into a wide end, or one in which a steel plate is press-formed into left and right parts, which are then welded together in the middle. Then, the interior is partitioned at appropriate intervals with partition plates to provide a plurality of silencing chambers. The partition plate is welded to the outer cylinder, but if it is a press-formed one, it is inserted first and welded, so only half of one side can be welded.
In addition, in the case of a tubular outer cylinder, it is inserted from the rear end, so it can be welded all around, but since the muffing outer cylinder has a plating finish, if the visible outside part is also welded, welding marks will remain and the appearance will be unsightly, so the inner part will not be visible. Weld the missing half. Therefore, the partition plate is not fixed sufficiently, causing vibrations, and the sealing performance is insufficient, resulting in gas leakage, which reduces the sound-dampening effect.
この考案は、かかる点に鑑み改善したもので、
以下図面に示す本考案の実施例について説明す
る。 This idea is an improvement based on these points.
Embodiments of the present invention shown in the drawings will be described below.
第１図及び第２図に示すものは、マフラ外筒１
を末広の筒状に形成しておき、仕切板２を後端か
ら挿入して溶着するものである。又、第３図及び
第４図に示すものは、マフラ外筒１を鋼板を左右
に分けて断面半円状にプレス成形し、一方に仕切
板２を挿入溶着し、他方を合せて溶着する形のも
のである。而して本考案は、仕切板２の外周にプ
レス成形によつて巾広部３を設けると共に、巾広
部３の外側に位置する半分に、凹み段部４を設け
る。そして、凹み段部４にシール充填材５を塗付
し、仕切板２は内側半分の巾広部３をマフラ外筒
１に、スポツト溶接によつて溶着する。第２図及
び第４図に、矢印Ｗで示す部分は、内側の溶着す
る範囲を示す。 What is shown in Fig. 1 and Fig. 2 is the muffler outer cylinder 1.
is formed into a wide cylindrical shape, and the partition plate 2 is inserted from the rear end and welded. In addition, in the case shown in Figs. 3 and 4, the muffler outer cylinder 1 is formed by press-forming a steel plate into left and right parts with a semicircular cross section, inserting and welding a partition plate 2 to one side, and welding the other side together. It is a thing of form. Accordingly, in the present invention, a wide portion 3 is provided on the outer periphery of the partition plate 2 by press molding, and a recessed step portion 4 is provided in the outer half of the wide portion 3. Then, a seal filler 5 is applied to the recessed stepped portion 4, and the inner half wide portion 3 of the partition plate 2 is welded to the muffler outer cylinder 1 by spot welding. In FIGS. 2 and 4, the part indicated by arrow W indicates the inner welding range.
作用について説明する。 The effect will be explained.
仕切板２は、巾広部３の内側半分をマフラ外筒
１に溶着によつて確実に固着される。そして、仕
切板２の外側半分には、巾広部３の凹み段部４に
充分な量のシール充填材５が塗着されて、マフラ
外筒１内に挿入されるので、シール充填材５がマ
フラ外筒１に密着して固定される。このため、シ
ールが確実にできて、ガス洩れによつて消音効果
が低下することがなく、振動の発生も少くでき
る。又、マフラ外筒１の外側には、溶着個所がな
いのでスポツト溶接の痕が残ることがなく体裁が
よい。 The partition plate 2 is securely fixed to the muffler outer cylinder 1 by welding the inner half of the wide portion 3. Then, on the outer half of the partition plate 2, a sufficient amount of seal filler 5 is applied to the recessed stepped portion 4 of the wide portion 3, and the seal filler 5 is inserted into the muffler outer cylinder 1. is fixed in close contact with the muffler outer cylinder 1. Therefore, the seal can be reliably formed, the silencing effect will not deteriorate due to gas leakage, and the generation of vibrations can be reduced. Further, since there are no welded parts on the outside of the muffler outer cylinder 1, there are no traces of spot welding, and the appearance is good.
以上説明したように、この考案は、外周に巾広
部を設けると共に巾広部の外側に位置する半分に
凹み段部を設けた仕切板を設け、該仕切板をマフ
ラ外筒内に挿入し、巾広部の内側に位置する半分
をマフラ外筒に溶着し、凹み段部にシール充填材
を塗着したので、仕切板の溶着しない部分も凹み
段部に入つた十分な量のシール充填材でマフラ外
筒に密着させることができる。このため、消音効
果が低下することがなく、振動の発生も少くでき
る。そして、マフラ外筒の外側の見える面に、ス
ポツト溶接の痕がないので体裁もよい。 As explained above, this invention provides a partition plate with a wide part on the outer periphery and a recessed stepped part in the half located outside the wide part, and inserts the partition plate into the muffler outer cylinder. Since the inner half of the wide part is welded to the muffler outer cylinder and the seal filler is applied to the recessed step, a sufficient amount of seal filler can be applied to the part of the partition plate that is not welded to the recess step. The material can be attached tightly to the muffler outer cylinder. Therefore, the silencing effect does not deteriorate, and the generation of vibrations can be reduced. Also, there are no traces of spot welding on the visible outside surface of the muffler outer cylinder, so it looks good.
第１図及び第２図は本考案の一実施例を示し、
第１図は縦断側面図、第２図は横断面図、第３図
及び第４図は本考案の他の実施例を示し、第３図
は一部縦断側面図、第４図は横断面図である。
１……マフラ外筒、２……仕切板、３……巾広
部、４……凹み段部、５……シール充填材。
1 and 2 show an embodiment of the present invention,
Fig. 1 is a vertical side view, Fig. 2 is a cross-sectional view, Figs. 3 and 4 show other embodiments of the present invention, Fig. 3 is a partially longitudinal side view, and Fig. 4 is a cross-sectional view. It is a diagram. 1... Muffler outer cylinder, 2... Partition plate, 3... Wide portion, 4... Concave stepped portion, 5... Seal filler.
Claims (1)
置する半分に凹み段部を設けた仕切板を設け、該
仕切板をマフラ外筒内に挿入し、巾広部の内側に
位置する半分をマフラ外筒に溶着し、凹み段部に
シール充填材を塗着したことを特徴とする内燃機
関のマフラ。 A partition plate is provided with a wide part on the outer periphery and a recessed stepped part in the half located on the outside of the wide part, and the partition plate is inserted into the muffler outer cylinder, and the half located on the inside of the wide part is provided. A muffler for an internal combustion engine, characterized in that the muffler is welded to the muffler outer cylinder, and a sealing filler is applied to the recessed step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981070130U JPS63976Y2 (en) | 1981-05-15 | 1981-05-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981070130U JPS63976Y2 (en) | 1981-05-15 | 1981-05-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57182216U JPS57182216U (en) | 1982-11-18 |
| JPS63976Y2 true JPS63976Y2 (en) | 1988-01-12 |
Family
ID=29865965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981070130U Expired JPS63976Y2 (en) | 1981-05-15 | 1981-05-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63976Y2 (en) |
-
1981
- 1981-05-15 JP JP1981070130U patent/JPS63976Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57182216U (en) | 1982-11-18 |
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