JPS62191611A - Exhaust muffler for miniature engine - Google Patents
Exhaust muffler for miniature engineInfo
- Publication number
- JPS62191611A JPS62191611A JP3226886A JP3226886A JPS62191611A JP S62191611 A JPS62191611 A JP S62191611A JP 3226886 A JP3226886 A JP 3226886A JP 3226886 A JP3226886 A JP 3226886A JP S62191611 A JPS62191611 A JP S62191611A
- Authority
- JP
- Japan
- Prior art keywords
- muffler
- pipe
- outer cylinder
- flange member
- expansion chambers
- 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.)
- Pending
Links
- 238000005192 partition Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/34—Ultra-small engines, e.g. for driving models
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は主として自動二輪車用に好適な小型エンジン
の排気マフラに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhaust muffler for a small engine suitable mainly for motorcycles.
従来、自動二輪車の排気マフラとして、筒部のマフラ外
筒内を同軸的に配置した隔壁で区画して数個の膨脹室と
なし、その膨脹室間がその隔壁に形成された孔に連通管
を挿脱自在に挿通させ、連通管に付着した炭化物の除去
を容易に行うようにした排気用マフラが知られている（
例えば、特開昭５８−１６２７１５号公報）。Conventionally, as an exhaust muffler for a motorcycle, the inside of the muffler outer cylinder of the cylindrical part is partitioned by a coaxially arranged partition wall to form several expansion chambers, and the expansion chambers are connected by a communicating pipe through a hole formed in the partition wall. There is an exhaust muffler that allows the pipe to be freely inserted and removed, making it easy to remove carbide adhering to the communication pipe (
For example, Japanese Patent Application Laid-open No. 162715/1983).
然しなから、マフラ本体から連通管を抜き取るための手
段として、連通管の外端に小孔を設け、その小孔にドラ
イバ等の棒状の部材を挿入して引き抜いたり、連通管の
外端に金属型のフックを固設することが行われているが
、連通管自体の強度が小さいときは前記小孔の周辺を損
傷することがあり、また、フックを設けるものでは構造
が複雑になって製造コストを上昇させる不具合がある。However, as a means to remove the communicating pipe from the muffler body, a small hole is provided at the outer end of the communicating pipe, and a rod-shaped member such as a screwdriver is inserted into the small hole and pulled out. Metal type hooks are fixedly installed, but if the strength of the communicating pipe itself is low, the area around the small hole may be damaged, and the structure with hooks is complicated. There are defects that increase manufacturing costs.
この発明は上記不具合を解決すべく、連通管をマフラ本
体へ取りつけるための鍔部材を利用して連通管の外端を
補強する構造簡単な補強構造を得ることを目的とするも
ので、筒状のマフラ外筒内を同軸的に配置した隔壁で数
個の膨脹室に区画し、その膨脹室間をその隔壁に形成さ
れた孔と、その孔に挿脱自在に挿通された連通管とで連
通させ、その連通管の一端をマフラ外筒の端板から突出
させて設け、前記連通管の突出部外面に外向きの筒部で
嵌合した鍔部材を設け、マフラ外筒と連通管とを鍔部材
を介してねし止めした点に特徴がある。In order to solve the above-mentioned problems, this invention aims to obtain a simple reinforcing structure in which the outer end of the communicating pipe is reinforced using a collar member for attaching the communicating pipe to the muffler body. The inside of the muffler outer cylinder is divided into several expansion chambers by coaxially arranged partition walls, and the expansion chambers are connected by holes formed in the partition walls and communication pipes inserted into and removably into the holes. one end of the communicating tube is provided so as to protrude from the end plate of the muffler outer cylinder, and a collar member fitted with an outwardly facing cylindrical portion is provided on the outer surface of the protrusion of the communicating tube, and the muffler outer cylinder and the communicating tube are connected to each other. It is distinctive in that it is screwed together via a collar member.
以下、図示の実施例によってこの発明を説明すると、第
１図中、１は自動二輪車の車体フレームであり、その前
端には前輪２を支持した前フオーク３が左右転向自在に
設けられ、リヤアーム４を介して後輪５が上下揺動自在
に支持されている。Hereinafter, the present invention will be described with reference to the illustrated embodiment. In FIG. 1, reference numeral 1 denotes a body frame of a motorcycle. A front fork 3 supporting a front wheel 2 is provided at the front end of the frame so as to be able to turn left and right, and a rear arm 4 The rear wheel 5 is supported via the rear wheel 5 so as to be vertically swingable.
６は車体フレームの前方下面に懸架されたエンジンであ
る。エンジン６からは車体後方へ排気管７が伸びており
、その後端には排気マフラ８が設けられている。6 is an engine suspended on the lower front surface of the vehicle body frame. An exhaust pipe 7 extends from the engine 6 toward the rear of the vehicle body, and an exhaust muffler 8 is provided at the rear end.
排気マフラ８は筒状の外筒１０を有し、外筒１０の内部
は同軸的に配置した数個の隔壁１１．１１で区画され、
数個の膨脹室１２．１２が形成されている。隔壁１１に
は孔１３が形成されており、膨脹室１２．１２間はその
孔１３に挿脱自在に挿通された連通管１４によって連通
されている。連通管１４はその内端が閉じられると共に
、外周に小孔１５が形成されており、その外端は前記外
筒１０の端板１６から突出させである。連通管１４の突
出部外面には外向きの筒部１７で嵌合した鍔部材１８が
溶着されて内外二重構造となっており、鍔部材１８は小
ねじ１９によって端板１６に設けた溶接ナツ）２０に螺
締されている。The exhaust muffler 8 has a cylindrical outer cylinder 10, and the inside of the outer cylinder 10 is partitioned by several coaxially arranged partition walls 11.11.
Several expansion chambers 12.12 are formed. A hole 13 is formed in the partition wall 11, and the expansion chambers 12 and 12 are communicated with each other by a communication tube 14 that is removably inserted into the hole 13. The communication tube 14 has an inner end closed, a small hole 15 formed on its outer periphery, and an outer end protruding from the end plate 16 of the outer cylinder 10. A collar member 18 fitted with an outward cylindrical portion 17 is welded to the outer surface of the protruding portion of the communication pipe 14 to form a double structure of inside and outside. Natsu) 20 is screwed on.
次ぎに、連通管１４の脱着方法を説明すると、まず、小
ねじ１９を緩めて抜き取り、連通管１４外端の二重構造
となった部分をプライヤその他の工具で挟んで引き抜く
もので、取付けは以上と逆の工程で作業を行う。Next, to explain how to attach and detach the communication tube 14, first, loosen the machine screw 19 and pull it out, then pinch the double-structured part of the outer end of the communication tube 14 with pliers or other tools and pull it out. Perform the work in the reverse order of the above steps.
以上のようにこの発明は、筒状のマフラ外筒とこれに挿
脱自在に挿通された連通管とを、連通管のマフラ外筒の
端板から突出させた部分に外向きの筒部で嵌合した鍔部
材を設け、マフラ外筒と連通管とを鍔部材を介してねし
止めしたものであるから、連通管の外端は鍔部材によっ
て補強されており、外向きに突出しているので、強い力
で引き抜いても変形がなく容易に抜取ることが出来る。As described above, the present invention includes a cylindrical muffler outer cylinder and a communication pipe that is removably inserted into the muffler outer cylinder, with an outward-facing cylindrical part in a portion of the communication pipe that protrudes from the end plate of the muffler outer cylinder. Since a fitted collar member is provided and the muffler outer cylinder and the communication pipe are screwed together via the collar member, the outer end of the communication pipe is reinforced by the collar member and protrudes outward. Therefore, it can be easily removed without deformation even if it is pulled out with strong force.
また、従来のように連通管外端にフックを設ける必要も
なくなり、構造が簡単であるため生産が廉価に行い得る
効果がある。In addition, there is no need to provide a hook at the outer end of the communicating tube as in the conventional case, and the structure is simple, which has the effect of making it possible to produce it at low cost.
図面はこの発明の一実施例を示すもので、第１図は自動
二輪車の側面図、第２図はマフラの要部の縦断面図、第
３図、第４図は従来のマフラを示す要部の縦断面図であ
る。
８・・・・排気マフラ、 １０−・・・筒状の外筒
、１１・−・−隔壁、 １４・・〜連通管、
１６−・端板、 １７−・筒部、１８・・−
鍔部材、
特許出願人 ヤマハ発動機株式会社
図而Ｃ浄ご（：ξ立に変更な−
忙ｌ 叩
竿２ 図
第３図
第４ 図
手続ネ市正書 （方式）
％式％
１、事件の表示
昭和６１年特許願第３２２６８号
２６発明の名称
小型エンジン用排気マフラ
３、補正をする者
事件との関係 特許出願人
４、補正命令の日付
図面の浄書The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of a motorcycle, Fig. 2 is a vertical sectional view of main parts of a muffler, and Figs. 3 and 4 are main parts showing a conventional muffler. FIG. 8...Exhaust muffler, 10-...Cylindrical outer cylinder, 11...-Partition wall, 14...~Communication pipe,
16-・End plate, 17-・Cylinder part, 18...-
Tsuba member, patent applicant Yamaha Motor Co., Ltd. Indication of 1985 Patent Application No. 32268 26 Name of the invention Exhaust muffler for small engine 3, Person making the amendment Relationship to the case Patent applicant 4, Date of amendment order Engraving of the drawing
Claims (2)
個の膨脹室に区画し、その膨脹室間をその隔壁に形成さ
れた孔と、その孔に挿脱自在に挿通された連通管とで連
通させ、その連通管の一端をマフラ外筒の端板から突出
させて設け、前記連通管の突出部外面に外向きの筒部で
嵌合した鍔部材を設け、マフラ外筒と連通管とを鍔部材
を介してねじ止めしてなる小型エンジン用排気マフラ。(1) The inside of the cylindrical muffler outer cylinder is divided into several expansion chambers by coaxially arranged partition walls, and the expansion chambers are connected through holes formed in the partition walls, and the expansion chambers are inserted into and removably inserted into the holes. one end of the communication pipe is provided so as to protrude from the end plate of the muffler outer cylinder, and a flange member fitted with an outward cylindrical part is provided on the outer surface of the protruding part of the communication pipe, and the outside of the muffler is This is an exhaust muffler for a small engine, which is made by screwing a cylinder and a communicating pipe through a collar member.
なしている特許請求の範囲第１項記載の小型エンジン用
排気マフラ。(2) The exhaust muffler for a small engine according to claim 1, wherein the outer surface of the protrusion of the communicating pipe and the flange of the flange member have a cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226886A JPS62191611A (en) | 1986-02-17 | 1986-02-17 | Exhaust muffler for miniature engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3226886A JPS62191611A (en) | 1986-02-17 | 1986-02-17 | Exhaust muffler for miniature engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62191611A true JPS62191611A (en) | 1987-08-22 |
Family
ID=12354253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3226886A Pending JPS62191611A (en) | 1986-02-17 | 1986-02-17 | Exhaust muffler for miniature engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7506722B2 (en) * | 2004-01-27 | 2009-03-24 | Emler Don R | Vehicle exhaust systems |
| US7779963B2 (en) * | 2006-10-30 | 2010-08-24 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust system for motorcycle |
-
1986
- 1986-02-17 JP JP3226886A patent/JPS62191611A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7506722B2 (en) * | 2004-01-27 | 2009-03-24 | Emler Don R | Vehicle exhaust systems |
| US7779963B2 (en) * | 2006-10-30 | 2010-08-24 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust system for motorcycle |
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