JP3345981B2 - Motorcycle muffler - Google Patents
Motorcycle mufflerInfo
- Publication number
- JP3345981B2 JP3345981B2 JP22366393A JP22366393A JP3345981B2 JP 3345981 B2 JP3345981 B2 JP 3345981B2 JP 22366393 A JP22366393 A JP 22366393A JP 22366393 A JP22366393 A JP 22366393A JP 3345981 B2 JP3345981 B2 JP 3345981B2
- Authority
- JP
- Japan
- Prior art keywords
- outer cylinder
- inner cylinder
- cylinder
- muffler
- rear end
- 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 - Fee Related
Links
Landscapes
- Exhaust Silencers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動二輪車用マフラ
に関する。詳しくは、外筒と内筒とから二重構造にされ
た自動二輪車用マフラに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muffler for a motorcycle. More specifically, the present invention relates to a muffler for a motorcycle having a double structure including an outer cylinder and an inner cylinder.
【０００２】[0002]
【従来の技術】自動二輪車のマフラのうち、外筒とその
内部に配置される内筒とから二重構造にされた図６およ
び図７に示すようなマフラａ1，ａ2にあっては、軽量化
のため外筒ｂにはアルミ材が、また内筒ｃには高温の排
ガスに耐え得るように鉄材やステンレス材が一般に用い
られる。これら外筒ｂおよび内筒ｃの両部材は、一体に
する必要上、図６に示すマフラａ1のように、外筒ｂの
後端ｂ1を内側に曲げて、内筒ｃの後端開口ｃ1を覆うプ
レートｄにかしめたり、あるいは、図７に示すマフラａ
2のように、内筒ｃの後端開口ｃ1をガイドプレートｅで
覆った後さらに外筒ｂの後端ｂ1をふた体ｆで覆ったり
して、内筒ｃを外筒ｂに固定していた。2. Description of the Related Art Among mufflers of a motorcycle, mufflers a 1 and a 2 as shown in FIGS. 6 and 7 having a double structure composed of an outer cylinder and an inner cylinder disposed therein are shown. In order to reduce the weight, an aluminum material is generally used for the outer cylinder b, and an iron material or a stainless steel material is generally used for the inner cylinder c so as to withstand high-temperature exhaust gas. Both members of these outer cylinder b and the inner cylinder c is the need to integrate, as muffler a 1 shown in FIG. 6, by bending the rear end b 1 of the outer cylinder b inside, the rear end of the inner cylinder c or caulking plate d that covers the opening c 1, or muffler a shown in FIG. 7
As 2, with or cover the rear end b 1 of the further outer cylinder b after covering the rear opening c 1 of the inner cylinder c with the guide plate e at the lid body f, fixing the inner tube c to the outer cylinder b Was.
【０００３】しかしながら、前者の固定手段にあって
は、いわゆる排気脈動による振動や熱膨張によって、か
しめ部分がゆるみ、外筒ｂと内筒ｃとの間にガタが生じ
易いという問題があった。そして、後者の固定手段にあ
っては、同じく排気脈動による振動や熱膨張によって、
ふた体ｆおよびガイドプレートｅと内筒ｃとがぶつか
り、外筒ｂと内筒ｃとの間でやはりガタが生じてしまう
という問題がある。However, the former fixing means has a problem that the swaged portion is loosened due to vibration or thermal expansion caused by so-called exhaust pulsation, and play is likely to occur between the outer cylinder b and the inner cylinder c. And, in the latter fixing means, vibration and thermal expansion due to exhaust pulsation also cause
There is a problem that the lid f, the guide plate e, and the inner cylinder c collide with each other, so that the outer cylinder b and the inner cylinder c also play.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記従来の
問題点に鑑みてなされたものであって、その解決しよう
とする課題は、外筒と内筒との間にガタが生じないよう
にするとともに作業性が良好でかつ内筒の劣化が少ない
自動二輪車用マフラを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to prevent backlash between an outer cylinder and an inner cylinder. Another object of the present invention is to provide a muffler for a motorcycle which has good workability and has little deterioration of the inner cylinder.
【０００５】[0005]
【課題を解決するための手段】本発明に係る自動二輪車
用マフラは、厚肉状前端部を有する前後両端開口円筒形
アルミ製外筒と、この外筒内部に入れられて前後両端開
口円筒形鉄製またはステンレス製内筒とによって二重構
造にしたものであり、上記内筒に、これの内部を複数の
小室に分割する仕切り壁および該小室を連通する内パイ
プを設けているとともに、上記外筒の厚肉状前端部に、
これにエキゾーストパイプを連結する螺合手段のための
通し孔を当該外筒の軸心と平行に形成し、かつ、その厚
肉状前端部と上記内筒の前端部とを螺着し、前記内筒の
後端部開口および前記外筒の後端部開口を閉じるテール
プレートが嵌着され、このテールプレートは、内筒の開
口に対する小径部と外筒の開口に対する大径部とからな
り当該小径部の内筒への嵌着および大径部の外筒への嵌
着が、それぞれ緩い状態および固い状態にあることを特
徴としている。A muffler for a motorcycle according to the present invention includes a cylindrical aluminum outer cylinder having a thick-walled front end and open front and rear ends, and a cylindrical outer end which is inserted inside the outer cylinder and has front and rear open ends. The inner cylinder has a double structure with an inner cylinder made of iron or stainless steel, and the inner cylinder is provided with a partition wall for dividing the inside of the inner cylinder into a plurality of small chambers and an inner pipe communicating with the small chambers. At the thick front end of the cylinder,
A through-hole for screwing means for connecting the exhaust pipe to this is formed in parallel with the axis of the outer cylinder, and the thick front end and the front end of the inner cylinder are screwed together. A tail plate that closes the rear end opening of the inner cylinder and the rear end opening of the outer cylinder is fitted, and the tail plate includes a small diameter portion with respect to the opening of the inner cylinder and a large diameter portion with respect to the opening of the outer cylinder. The fitting of the small diameter portion into the inner cylinder and the fitting of the large diameter portion into the outer cylinder are in a loose state and a hard state, respectively.
【０００６】また、前記内筒の後端部開口および前記外
筒の後端部開口には、両開口を閉じるテールプレートが
嵌着され、このテールプレートは、内筒の開口に対する
小径部と外筒の開口に対する大径部とからなり当該小径
部の内筒への嵌着および大径部の外筒への嵌着は、それ
ぞれ緩い状態および固い状態にあることを特徴とする。A tail plate for closing both openings is fitted to the rear end opening of the inner cylinder and the rear end opening of the outer cylinder. It is characterized in that the fitting of the small diameter portion to the inner cylinder and the fitting of the large diameter portion to the outer cylinder are in a loose state and a hard state, respectively.
【０００７】[0007]
【作用】したがって、請求項１記載の本発明自動二輪車
用マフラによれば、外筒の厚肉で強度のある前端部と内
筒の前端部とが螺着されているので、外筒の後端を内側
に曲げて内筒の後端にかしめたり、あるいは外筒の後側
端をふた体で覆ったりして、内筒を外筒に固定していた
だけの従来技術よりも一層強度に外筒と内筒とが固定さ
れる。そして、螺着部分は外筒および内筒の前端部であ
るので、螺着作業は、両筒の前端部開口に近接している
ため容易である。Therefore, according to the muffler for a motorcycle according to the present invention, since the thick and strong front end of the outer cylinder is screwed to the front end of the inner cylinder, the rear end of the outer cylinder is screwed. Bending the end inward and caulking it to the rear end of the inner cylinder, or covering the rear end of the outer cylinder with a lid, fixing the inner cylinder to the outer cylinder more strongly than the conventional technology The tube and the inner tube are fixed. Since the screwed portion is the front end of the outer tube and the inner tube, the screwing operation is easy because it is close to the front end openings of both tubes.
【０００８】また、請求項２記載の本発明自動二輪車用
マフラによれば、内筒の前端を外筒に螺着して固定し、
内筒の後端は、外筒に一部が固い状態で嵌着されたテー
ルプレートは内筒には緩い状態で嵌着されているので、
熱膨張によって内筒がマフラの前後方向に大きくなって
も当該大きくなった分を当該緩い嵌着によって吸収でき
るようになる。According to the muffler for a motorcycle of the present invention, the front end of the inner cylinder is screwed to the outer cylinder and fixed.
Since the tail end of the rear end of the inner cylinder that is partially fitted to the outer cylinder is loosely fitted to the inner cylinder,
Even if the inner cylinder becomes larger in the front-rear direction of the muffler due to thermal expansion, the larger portion can be absorbed by the loose fitting.
【０００９】[0009]
【実施例】以下、図面を参照して、本発明自動二輪車用
マフラを図示した実施例に従って詳細に説明する。図１
は本発明に係る自動二輪車用マフラが採用された自動二
輪車の概略図、図２は本発明に係る自動二輪車用マフラ
の第１実施例を示す側断面図、図３は図２の左側面図、
図４は本発明に係る自動二輪車用マフラの第２実施例を
示す側断面図、図５は図４の左側面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a muffler for a motorcycle according to the present invention. FIG.
1 is a schematic view of a motorcycle employing a muffler for a motorcycle according to the present invention, FIG. 2 is a side sectional view showing a first embodiment of a muffler for a motorcycle according to the present invention, and FIG. 3 is a left side view of FIG. ,
FIG. 4 is a side sectional view showing a second embodiment of the muffler for a motorcycle according to the present invention, and FIG. 5 is a left side view of FIG.
【００１０】（第１実施例）自動二輪車１には、エンジ
ン１ａが、適宜の固定手段で図示しないフレームに取り
付けられている。図２および図３に示す本発明自動二輪
車用マフラの第１実施例に係るマフラ２は、締め金４に
よってマフラ２と一体化された複数あるいは単数のエキ
ゾーストパイプ６を介してエンジン１ａに連結されてい
る。マフラ２は、軸心を同じくする、アルミ製外筒１０
とその中空に入れられた鉄製またはステンレス製内筒１
２とから二重構造にされたものである。(First Embodiment) In a motorcycle 1, an engine 1a is mounted on a frame (not shown) by an appropriate fixing means. The muffler 2 according to the first embodiment of the motorcycle muffler of the present invention shown in FIGS. 2 and 3 is connected to the engine 1a via a plurality of or a single exhaust pipe 6 integrated with the muffler 2 by a clamp 4. ing. The muffler 2 has an aluminum outer cylinder 10 having the same axis.
And an iron or stainless steel inner cylinder 1
2 and a double structure.
【００１１】外筒１０は、前後両端が開口されており、
その前端部１０ａに設けられた前端部開口１４は、後端
部１０ｂに設けられた後端部開口１６よりも小径にされ
ており、この前端部開口１４にエキゾーストパイプ６の
後端部６ａが入れられる。なお、ここで、前後とは、マ
フラ２を車両に付けたときの車両前後方向における前後
を意味する。そして、エキゾーストパイプ６のマフラ２
への連結は、螺合手段である複数のボルト２０・２０…
とナット２２・２２…（この実施例では３組のボルトと
ナットを示してある。）を介して、エキゾーストパイプ
６に溶着された締め金４を外筒前端面１０ａ’に固定す
ることによってなされる。シール材２４は、前端部開口
周りに形成された周溝２６に入れられるようになってお
り、エキゾーストパイプ６とマフラ２との連結部分から
排気ガスが漏れないようにするものである。The outer cylinder 10 has open front and rear ends.
The front end opening 14 provided at the front end 10a is smaller in diameter than the rear end opening 16 provided at the rear end 10b, and the rear end 6a of the exhaust pipe 6 is formed at the front end opening 14. Can be put in. Here, the front and rear mean the front and rear in the vehicle front and rear direction when the muffler 2 is attached to the vehicle. And the muffler 2 of the exhaust pipe 6
Is connected to a plurality of bolts 20 which are screwing means.
(In this embodiment, three sets of bolts and nuts are shown), and the clamp 4 welded to the exhaust pipe 6 is fixed to the front end face 10a 'of the outer cylinder. You. The sealing material 24 is inserted into a circumferential groove 26 formed around the opening at the front end, and prevents exhaust gas from leaking from a connection portion between the exhaust pipe 6 and the muffler 2.
【００１２】また、外筒１０は、その前端部１０ａの前
面側部１０ａ1および周面部１０ａ2が厚肉状にされてお
り、当該厚肉状部分のうちの前面側部１０ａ1にはボル
ト２０が入る複数の貫通通し孔２８・２８・…（この実
施例では３つ）が形成されている。内筒１２は、外筒１
０を一回り小さくした形状をしており、内筒１２も外筒
１０と同様に前後両端が開口されている。また、その前
端部１２ａの前端面部１２ａ1に設けられた前端部開口
３０は、後端部１２ｂに設けられた後端部開口３２より
も小径にされており、この前端部開口３０にエキゾース
トパイプ６の後端部６ａが入れられている。Further, the outer cylinder 10, the front side portion 10a 1 of the front side 10a 1 and the peripheral surface 10a 2 are the thick shape, the thick-like portion of the front end portion 10a bolt A plurality of through-holes 28 into which 20 20 enter (three in this embodiment) are formed. The inner cylinder 12 is the outer cylinder 1
0 is slightly smaller than that of the outer cylinder 10, and the front and rear ends of the inner cylinder 12 are opened similarly to the outer cylinder 10. Further, the front end opening 30 provided in the front surface portion 12a 1 of the front end portion 12a, the rear end opening 32 provided at the rear portion 12b are smaller in diameter, the exhaust pipe to the front end opening 30 6 has a rear end 6a.
【００１３】また、内筒１２の前端部開口３０の周りに
は外筒１０の通し孔２８・２８・…と同軸上にあってか
つそれらと同じ数の通し孔２８’・２８’・…が形成さ
れ、これらの通し孔２８・２８・…、２８’・２８’・
…にボルト２０・２０・…を通してナット２２・２２・
…で締め付けることによって締め金４、外筒１０および
内筒１２が一体に共絞めされている。Also, around the front end opening 30 of the inner cylinder 12, there are through-holes 28 ', 28',... Which are coaxial with the through-holes 28, 28,. ., 28 ′, 28 ′.
... and nuts 22
, The clamp 4, the outer cylinder 10 and the inner cylinder 12 are integrally squeezed together.
【００１４】なお、内筒１２が外筒１０と異なる点は、
内筒１２には外筒１０のような厚肉状部分がないことで
ある。そして、内筒１２の中は、仕切り壁３４・３４・
…（この実施例では１つの仕切り壁のみ示してある。）
によって複数の小室３６・３６・…（この実施例では２
つの小室を示してある。）に分割されており、これらの
小室３６・３６・…は、内パイプ３８・３８・…によっ
て連通されている。The difference between the inner cylinder 12 and the outer cylinder 10 is that
The inner cylinder 12 does not have a thick portion like the outer cylinder 10. And, inside the inner cylinder 12, partition walls 34
(In this embodiment, only one partition wall is shown.)
.. (In this embodiment, 2
Two chambers are shown. ), And these small chambers 36 are communicated by inner pipes 38.
【００１５】内筒１２の後端部開口３２および外筒１０
の後端部開口１６には、両開口３２１６を閉じるテール
プレート４０が嵌着されている。テールプレート４０
は、内筒１２の後端部開口３２に対する小径部４０ａと
外筒１０の後端部開口１６に対する大径部４０ｂとから
なり、小径部４０ａの内筒１２への嵌着および大径部４
０ｂの外筒１０への嵌着は、それぞれ緩い状態および固
い状態にされている。The rear end opening 32 of the inner cylinder 12 and the outer cylinder 10
A tail plate 40 that closes both openings 3216 is fitted into the rear end opening 16. Tail plate 40
Consists of a small-diameter portion 40a for the rear end opening 32 of the inner cylinder 12 and a large-diameter portion 40b for the rear end opening 16 of the outer cylinder 10. The small-diameter portion 40a is fitted to the inner cylinder 12 and the large-diameter portion 4a.
Ob is fitted in the outer cylinder 10 in a loose state and a hard state, respectively.
【００１６】しかして、この第１の実施例の自動二輪車
用マフラ２によれば、外筒１０の厚肉で強度のある前面
部１０ａと、内筒１２の前端部１２ａとが螺着されてい
るので、内筒１２を外筒１０に固定するのに内筒１２を
外筒１０の後端でかしめたり、あるいは外筒１０の後側
端をふた体で覆ったりしていた従来技術よりも一層強度
の状態で外筒１０と内筒１２とが固定される。このた
め、外筒１０と内筒１２との間にガタが生じないように
できる。そして、螺着部分は外筒１０および内筒１２の
前端部にあるので、螺着作業は、両筒１０・１２の前端
部開口１４・３０に近接しているため容易であるので、
作業性を良好にすることができる。Thus, according to the muffler 2 for a motorcycle of the first embodiment, the thick and strong front portion 10a of the outer cylinder 10 and the front end portion 12a of the inner cylinder 12 are screwed. In order to fix the inner cylinder 12 to the outer cylinder 10, the inner cylinder 12 is caulked at the rear end of the outer cylinder 10 or the rear end of the outer cylinder 10 is covered with a lid as compared with the prior art. The outer cylinder 10 and the inner cylinder 12 are fixed in a stronger state. Therefore, play can be prevented from occurring between the outer cylinder 10 and the inner cylinder 12. Since the screwed portion is located at the front end of the outer tube 10 and the inner tube 12, the screwing operation is easy because it is close to the front end openings 14 and 30 of the two tubes 10 and 12.
Workability can be improved.
【００１７】また、内筒１２の前端を外筒１０に螺着し
て固定し、内筒１２の後端は、外筒１０に一部が固い状
態で嵌着されたテールプレート４０と緩い状態で嵌着さ
れているので、熱膨張によって内筒１２がマフラ２の前
後方向に大きくなっても当該大きくなった分を当該緩い
嵌着によって吸収できるようになる。したがって、内筒
１２の劣化を少なくすることができる。Further, the front end of the inner cylinder 12 is screwed and fixed to the outer cylinder 10, and the rear end of the inner cylinder 12 is loosely connected to the tail plate 40 that is partially fitted to the outer cylinder 10. Therefore, even if the inner cylinder 12 becomes large in the front-rear direction of the muffler 2 due to thermal expansion, the increased amount can be absorbed by the loose fitting. Therefore, deterioration of the inner cylinder 12 can be reduced.
【００１８】（第２実施例）図４に示す本発明自動二輪
車用マフラの第２実施例に係るマフラ２Ａが、第１実施
例に係るマフラ２と異なる点は、外筒１０および内筒１
２に形成されてそれらを螺着するための通し孔を外筒１
０および内筒１２のそれぞれの周面部１０ａ2および１
２ａ2に形成したことによって、外筒１０への内筒１２
の取り付けを複数のボルト２０Ａ・２０Ａ・…とナット
２２Ａ・２２Ａ・…およびボルトヘッド側に位置する座
屈防止用鉄板２３・２３・…（この実施例では２組のボ
ルト、ナットおよび座屈防止用鉄板を示してある。）と
で行うようにした点である。なお、外筒１０へのエキゾ
ーストパイプ６の取り付けは、第１の実施例における外
筒１０の通し孔２８・２８・…を貫通しない止め孔２８
Ａ・２８Ａ・…とし、これにボルト２０・２０・…を螺
合することによって行う。また、符号４２が示すものは
外筒１０と内筒１２との間に介在された内部ブラケット
であって、外筒１０と内筒１２との間の適宜のすきまを
維持するものである。なお、同一部分には同一符号を付
して説明を省略する。(Second Embodiment) A muffler 2A according to a second embodiment of the muffler for a motorcycle according to the present invention shown in FIG. 4 is different from the muffler 2 according to the first embodiment in that the outer cylinder 10 and the inner cylinder 1 are different.
2 and a through hole for screwing them into the outer cylinder 1
0 and the respective peripheral surface portions 10a 2 and 1 of the inner cylinder 12
By forming the 2a 2, the inner cylinder 12 into the outer cylinder 10
, A plurality of bolts 20A, 20A,..., Nuts 22A, 22A,... And buckling prevention iron plates 23, 23,. An iron plate is shown.) The exhaust pipe 6 is attached to the outer cylinder 10 by a stop hole 28 which does not pass through the through holes 28 of the outer cylinder 10 in the first embodiment.
A.28A,... Are screwed with bolts 20, 20,. Reference numeral 42 denotes an inner bracket interposed between the outer cylinder 10 and the inner cylinder 12, which maintains an appropriate clearance between the outer cylinder 10 and the inner cylinder 12. Note that the same parts are denoted by the same reference numerals, and description thereof will be omitted.
【００１９】第２実施例に係るマフラ２Ａによっても、
第１実施例に係るマフラ２と同様の作用効果を奏するこ
とができる。また、外筒１０への内筒１２の取り付けを
行うボルト２０Ａとナット２２Ａとは、外筒１０および
内筒１２のそれぞれの前端部開口１４の近傍にある周面
部１０ａ2および前端部開口３０の近傍にある周面部１
２ａ2に設けたので、取り扱いが容易である。なお、各
周面部１０ａ2および１２ａ2に設けたナット２２Ａ・２
２Ａ・…とボルト２０Ａ・２０Ａ・…とは、溶着して完
全に固定してもよい。この場合にも前端部開口１４の近
傍にある周面部１０ａ2および１２ａ2にナット２２Ａ・
２２Ａ・…およびボルト２０Ａ・２０Ａ・…があるの
で、溶着作業が容易となり作業性を良好にすることがで
きる。With the muffler 2A according to the second embodiment,
The same operation and effect as the muffler 2 according to the first embodiment can be obtained. In addition, the bolt 20A and a nut 22A that performs mounting of the inner cylinder 12 into the outer cylinder 10, each peripheral surface portion 10a 2 and the front end opening 30 in the vicinity of the front end opening 14 of the outer cylinder 10 and inner cylinder 12 Peripheral surface part 1 in the vicinity
Since there is provided the 2a 2, it is easy to handle. Incidentally, the nut 22A · 2 provided in the peripheral surface portion 10a 2 and 12a 2
2A... And the bolts 20A. Nut 22A in the circumferential surface portion 10a 2 and 12a 2 in the vicinity of the front end opening 14 in this case -
.. And the bolts 20A, 20A,... Facilitate the welding work and improve workability.
【００２０】[0020]
【発明の効果】請求項１記載の本発明によれば、次の効
果を得ることができる。外筒の厚肉で強度のある前端部
と内筒の前端部とが螺着されているので、外筒の後端を
内側に曲げて内筒の後端にかしめたり、あるいは外筒の
後側端をふた体で覆ったりして、内筒を外筒に固定して
いただけの従来技術よりも一層強固に外筒と内筒とを固
定できる。従って、外筒と内筒との間にガタが生じるこ
とがなく、内筒の劣化を少なくすることができる。ま
た、螺着部分は外筒および内筒の前端部であるので、そ
れらの螺着作業を、両筒の前端部開口に近接した位置で
容易に行える。さらに、テールプレートが、内筒の開口
に対する小径部と外筒の開口に対する大径部とを備えて
なり、その小径部の内筒への嵌着および大径部の外筒へ
の嵌着を、それぞれ緩い状態および固い状態にしている
ので、熱膨張によって内筒がマフラの前後方向に大きく
なっても当該大きくなった分を当該緩い嵌着によって吸
収でき、これにより、さらに内筒の劣化を少なくするこ
とができる。According to the present invention, the following effects can be obtained. The thick and strong front end of the outer cylinder is screwed to the front end of the inner cylinder, so the rear end of the outer cylinder is bent inward and swaged to the rear end of the inner cylinder, or The outer cylinder and the inner cylinder can be more firmly fixed than in the prior art in which the side ends are covered with a lid or the inner cylinder is fixed to the outer cylinder. Therefore, there is no play between the outer cylinder and the inner cylinder, and deterioration of the inner cylinder can be reduced. Further, since the screwed portion is the front end of the outer cylinder and the inner cylinder, the screwing operation of these can be easily performed at a position close to the front end opening of both cylinders. Further, the tail plate has a small diameter portion with respect to the opening of the inner cylinder and a large diameter portion with respect to the opening of the outer cylinder, and the fitting of the small diameter portion to the inner cylinder and the fitting of the large diameter portion to the outer cylinder are performed. Since the muffler is enlarged in the front-back direction of the muffler due to thermal expansion, the increased amount can be absorbed by the loose fitting because the loosened state and the hardened state are provided, thereby further reducing the deterioration of the inner cylinder. Can be reduced.
【図１】本発明に係る自動二輪車用マフラが採用された
自動二輪車の概略図である。FIG. 1 is a schematic diagram of a motorcycle employing a muffler for a motorcycle according to the present invention.
【図２】本発明に係る自動二輪車用マフラの第１実施例
を示す側断面図である。FIG. 2 is a side sectional view showing a first embodiment of a muffler for a motorcycle according to the present invention.
【図３】図２の左側面図である。FIG. 3 is a left side view of FIG. 2;
【図４】本発明に係る自動二輪車用マフラの第２実施例
を示す側断面図である。FIG. 4 is a side sectional view showing a second embodiment of the muffler for a motorcycle according to the present invention.
【図５】図４の左側面図である。FIG. 5 is a left side view of FIG.
【図６】従来技術を示す図である。FIG. 6 is a diagram showing a conventional technique.
【図７】別の従来技術を示す図である。FIG. 7 is a diagram showing another conventional technique.
２ 自動二輪車用マフラ ６ エキゾーストパイプ １０ 外筒 １０ａ 外筒の前端部 １２ 内筒 １２ａ 内筒の前端部 １６ 後端部開口 ２０ 螺合手段 ２２ 螺合手段 ２８ 貫通通し孔 ３２ 後端部開口 ４０ テールプレート ４０ａ 小径部 ４０ｂ 大径部 2 muffler for motorcycle 6 exhaust pipe 10 outer cylinder 10a front end of outer cylinder 12 inner cylinder 12a front end of inner cylinder 16 rear end opening 20 screwing means 22 screwing means 28 through-through hole 32 rear end opening 40 tail Plate 40a Small diameter part 40b Large diameter part
Claims (1)
形アルミ製外筒と、この外筒内部に入れられて前後両端
開口円筒形鉄製またはステンレス製内筒とによって二重
構造にした自動二輪車用マフラにおいて、 上記内筒に、これの内部を複数の小室に分割する仕切り
壁および該小室を連通する内パイプを設けているととも
に、上記外筒の厚肉状前端部に、これにエキゾーストパ
イプを連結する螺合手段のための通し孔を当該外筒の軸
心と平行に形成し、かつ、その厚肉状前端部と上記内筒
の前端部とを螺着し、 前記内筒の後端部開口および前記外筒の後端部開口を閉
じるテールプレートが嵌着され、このテールプレート
は、内筒の開口に対する小径部と外筒の開口に対する大
径部とからなり当該小径部の内筒への嵌着および大径部
の外筒への嵌着は、それぞれ緩い状態および固い状態に
あ ることを特徴とする自動二輪車用マフラ。1. An automatic double-layered structure comprising a cylindrical aluminum outer cylinder having front and rear open ends having a thick front end, and a cylindrical iron or stainless steel inner cylinder inserted into the outer cylinder and having front and rear open ends. In the muffler for a motorcycle, the inner cylinder is provided with a partition wall for dividing the inside of the inner cylinder into a plurality of small chambers and an inner pipe communicating with the small chambers, and an exhaust is provided at a thick front end of the outer cylinder. the through hole is formed parallel to the axis of the outer cylinder for engagement means for connecting the pipe, and screwed to the front end portion of the thick-like front end portion and the inner cylinder, the inner cylinder Close the rear end opening and the rear end opening of the outer cylinder.
This tail plate is fitted with a tail plate
Is smaller than the inner cylinder opening and larger than the outer cylinder opening.
The small diameter portion is fitted to the inner cylinder and the large diameter portion
Fits loosely and firmly into the outer cylinder, respectively.
Motorcycle muffler, wherein the Rukoto Oh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22366393A JP3345981B2 (en) | 1993-09-08 | 1993-09-08 | Motorcycle muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22366393A JP3345981B2 (en) | 1993-09-08 | 1993-09-08 | Motorcycle muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0777041A JPH0777041A (en) | 1995-03-20 |
| JP3345981B2 true JP3345981B2 (en) | 2002-11-18 |
Family
ID=16801702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22366393A Expired - Fee Related JP3345981B2 (en) | 1993-09-08 | 1993-09-08 | Motorcycle muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3345981B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3789742B2 (en) | 2000-09-08 | 2006-06-28 | 本田技研工業株式会社 | Exhaust silencer |
-
1993
- 1993-09-08 JP JP22366393A patent/JP3345981B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0777041A (en) | 1995-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7434656B2 (en) | Exhaust device for vehicle engine | |
| JP3373942B2 (en) | Exhaust silencer | |
| JP2006336484A (en) | Exhaust device support structure and support structure for vehicle component | |
| JP2001080566A (en) | Exhaust system of motorcycle | |
| JP3345981B2 (en) | Motorcycle muffler | |
| JPS6338524B2 (en) | ||
| JPS6143938Y2 (en) | ||
| JPH0643451Y2 (en) | Motorcycle exhaust pipe | |
| JPS61207814A (en) | Engine muffler | |
| JP2962438B2 (en) | Exhaust manifold | |
| JP2000248925A (en) | Exhaust device structure | |
| JPH0545768Y2 (en) | ||
| JPS638284B2 (en) | ||
| JP2972012B2 (en) | Muffler structure | |
| JP2630737B2 (en) | Exhaust system for motorcycle | |
| JPS6329083B2 (en) | ||
| JPH0625393Y2 (en) | Engine mounting device | |
| JPH048244Y2 (en) | ||
| JPH0352632Y2 (en) | ||
| JP3899832B2 (en) | Engine exhaust manifold mounting structure | |
| JPH066179Y2 (en) | Silencer | |
| JPH072974Y2 (en) | Muffler with a cover for motorcycles | |
| JPH09137723A (en) | Exhaust device of internal combustion engine | |
| JPH0541226Y2 (en) | ||
| JPH0247216Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090906 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090906 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100906 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110906 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110906 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120906 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120906 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130906 Year of fee payment: 11 |
|
| LAPS | Cancellation because of no payment of annual fees |