WO2014162578A1 - Muffler - Google Patents

Muffler Download PDF

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Publication number
WO2014162578A1
WO2014162578A1 PCT/JP2013/060419 JP2013060419W WO2014162578A1 WO 2014162578 A1 WO2014162578 A1 WO 2014162578A1 JP 2013060419 W JP2013060419 W JP 2013060419W WO 2014162578 A1 WO2014162578 A1 WO 2014162578A1
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WO
WIPO (PCT)
Prior art keywords
protector
cylindrical body
muffler
flange portion
winding
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PCT/JP2013/060419
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French (fr)
Japanese (ja)
Inventor
敬章 中川
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中川産業株式会社
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Priority to PCT/JP2013/060419 priority Critical patent/WO2014162578A1/en
Publication of WO2014162578A1 publication Critical patent/WO2014162578A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof

Definitions

  • the present invention relates to a muffler, and more particularly to an improvement in a protector mounting structure provided on a muffler that is exposed from a vehicle body.
  • a muffler In motorcycles, buggy cars, snowmobiles, etc., a muffler is exposed from the vehicle body, so a protector may be provided to improve its appearance and heat insulation.
  • a protector may be provided to improve its appearance and heat insulation.
  • Patent Document 1 a mounting stay is welded and fixed to the outer periphery of the muffler body, the mounting hole of the protector is aligned with the mounting hole of the mounting stay, and the protector is screwed to the mounting stay. By doing so, the protector is attached to the muffler body.
  • the conventional muffler has a problem in that it requires a manufacturing man-hour because it is necessary to fix the protector to the mounting stay by screwing the mounting stay for attaching the protector to the muffler body by welding or the like. In addition, there is a problem that the screws are loosened by vibrations or the like, or the screws are loosened and relatively easily stolen.
  • an object of the present invention is to provide a muffler that can reduce the trouble of mounting the protector and can be securely mounted.
  • a muffler (M) provided with a protector (1) covering at least a part of the outer periphery of the main body (2).
  • a cylindrical body (21) is configured by a cylindrical body (21) to be accommodated and end plates (22, 23) provided with exhaust outlets (31, 32) while closing both side openings of the cylindrical body (21). And the outer peripheral edges of the end plates (22, 23) are coupled by winding and a part (13, 14) of the protector (1) is integrally coupled to the winding portion (24). Yes.
  • the protector when the opening edge of the cylindrical body and the outer peripheral edge of the end plate are joined by winding, a part of the protector can be simultaneously connected to the winding part. There is no need to provide a mounting stay or screw the protector to the mounting stay, and the number of steps for mounting the protector can be reduced. Moreover, since it does not loosen due to vibration or the like unlike screw fixing, it can be securely attached.
  • flange portions (15, 16) are formed on the edges (13, 14) of the protector, and the flange portions (15, 16) are connected to the tightening portion (24) and the cylindrical body (21). It is tightly attached to the outer periphery and is in a coupled state.
  • the flange portion is tightly sandwiched between the tightening portion and the outer periphery of the cylindrical body, so that the flange portion can be clamped simultaneously with the completion of the tightening process.
  • the protector (1) extends substantially parallel to the outer periphery of the cylindrical body (21), and both end edges (13, 14) are bent toward the outer peripheral surface of the cylindrical body (21).
  • the flanges (15, 16) are formed at the tip.
  • the protector can be more securely attached to the muffler main body by narrowing the flange portions at the ends of both end edges.
  • the trouble of attaching the protector is reduced, and reliable attachment is possible.
  • FIG. 2 is an end view taken along arrow A in FIG. 1.
  • FIG. 2 is an end view as viewed in the direction of arrow B in FIG. 1.
  • FIG. 5 is an end view taken in the direction of arrow C in FIG. 4.
  • FIG. 5 is an end view taken in the direction of arrow D in FIG. 4.
  • FIG. 7 is a sectional view taken along line VII-VII in FIG. 1. It is sectional drawing which shows a winding process.
  • FIG. 1 shows a plan view of a muffler M for a motorcycle provided with a protector 1
  • FIGS. 2 and 3 show end views taken along arrows A and B in FIG. 1, respectively.
  • the muffler body 2 includes a cylindrical body 21 formed by cylindrically forming a stainless metal plate, and a known silencing mechanism is accommodated inside the cylindrical body 21.
  • Both side openings of the cylindrical body 21 are closed by end plates 22 and 23 mounted in a structure to be described later.
  • end plates 22 and 23 mounted in a structure to be described later.
  • an inflow pipe 31 as an exhaust circulation port connected to an exhaust pipe (not shown) protrudes, and slightly downward from the center of the downstream end plate 23.
  • a tail pipe 32 as an exhaust circulation port protrudes.
  • the protector 1 is provided on one side of the upper half of the muffler main body 2 (the surface that becomes the outer side when installed on a motorcycle).
  • the protector 1 is formed by integrally forming a stainless steel metal plate.
  • FIG. 4 shows a plan view thereof
  • FIGS. 5 and 6 show end views as viewed in the direction of arrows C and D in FIG.
  • the protector 1 is formed in a circular arc shape as a whole, and extends parallel to the outer peripheral surface of the cylindrical body 21 while maintaining the same radius of curvature of the circular arc.
  • the upstream end 11 has a relatively large width, and gradually decreases gradually toward the downstream end 12 at the other end.
  • the both end edges 13 and 14 of the protector 1 are bent stepwise on both the upstream side and the downstream side to be deformed by the same amount, and the end edges 13 and 14 are fixed outward in the longitudinal direction.
  • Flange portions 15 and 16 bent at a width are formed.
  • the inner peripheral radii of the flange portions 15 and 16 are substantially equal to the outer peripheral radius of the cylindrical body 21.
  • FIG. 7 shows the protector 1 attached to the upstream end of the muffler M.
  • the upstream opening edge of the cylindrical body 21 is hermetically coupled with the outer peripheral edge of the upstream end plate 22 by double winding, and the upstream end of the protector 1 is connected to the winding portion 24.
  • a flange portion 15 formed on the edge 13 is sandwiched.
  • the flange portion 16 of the downstream end edge 14 (FIG. 4) of the protector 1 has a similar structure, and is sandwiched between winding portions between the downstream opening edge of the cylindrical body 21 and the outer peripheral edge of the downstream end plate 23. .
  • the protector 1 is fixed to the muffler body 2 by the flange portions 15 and 16 of the upstream and downstream end edges 13 and 14 being sandwiched between the winding fastening portions.
  • FIG. 8 shows a process for fixing the upstream edge 13 of the protector 1.
  • a flange portion 211 that bends outward at a right angle is formed at the opening edge of the cylindrical body 21, while the upstream end plate 22 has a stepped right angle on the entire outer periphery.
  • a bent portion 221 is formed, the inner peripheral portion of the end plate 22 is fitted into the cylindrical body 21, and a flange portion 222 extending relatively long outward from the bent portion 221 is positioned along the flange portion 211.
  • the flange portion 222 is folded back so as to cover the flange portion 211, and the flange portion 15 of the upstream edge 13 of the protector 1 is in contact with the outer periphery of the cylindrical body 21 in this state. It is made to contact
  • the flange portion 211 and the flange portion 222 are integrally bent onto the flange portion 15 (arrow in FIG. 8 (2)) to complete the double winding (FIG. 7), and at the same time, the flange 24 is moved by the winding portion 24.
  • the portion 15 is held between the outer peripheral surface of the cylindrical body 21.
  • the protector is a metal plate molded product, but is not limited thereto, and may be a resin molded product, for example.
  • the winding does not necessarily need to be double winding.
  • the flange portion is formed on the protector, and the flange portion is tightly fitted between the tightening portion and the outer peripheral surface of the cylindrical body.
  • the method of connecting a part of the protector to the tightening portion is not limited to narrowing, and for example, the protector may be wound around the tightening portion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Abstract

[Problem] To reduce the labor involved in attaching a protector, and to enable the protector to be attached securely. [Solution] A muffler main body (2) is configured with a cylindrical body (21) housing a sound-muffling mechanism, and with end plates (22, 23), which close off openings at either end of the cylindrical body (21) and are provided with a circulation pipe (31) and a tail pipe (32). The edges of the openings of the cylindrical body (21) and outer peripheral edges of the end plates (22, 23) are connected by roll-crimping, and flange parts (15, 16), formed at the end edges (13, 14) of a protector (1), are connected by being sandwiched between the crimped parts (24) and the outer circumference of the cylindrical body (21).

Description

マフラーScarf
　本発明はマフラーに関し、特に車体から露出して設置されるマフラーに設けるプロテクタの取付構造の改良に関するものである。 The present invention relates to a muffler, and more particularly to an improvement in a protector mounting structure provided on a muffler that is exposed from a vehicle body.
　二輪車やバギー車、スノーモビル等ではマフラーが車体から露出しているため、その見栄えの向上や断熱等のためにプロテクタを設けることがある。その一例が特許文献１に示されており、ここでは、マフラー本体の外周に取付ステーを溶接固定し、当該取付ステーの取付穴にプロテクタの取付穴を合致させて、プロテクタを取付ステーにネジ固定することによってマフラー本体にプロテクタが取り付けられている。 In motorcycles, buggy cars, snowmobiles, etc., a muffler is exposed from the vehicle body, so a protector may be provided to improve its appearance and heat insulation. An example of this is shown in Patent Document 1. Here, a mounting stay is welded and fixed to the outer periphery of the muffler body, the mounting hole of the protector is aligned with the mounting hole of the mounting stay, and the protector is screwed to the mounting stay. By doing so, the protector is attached to the muffler body.
特開２０００－２４８９３３JP 2000-248933 A
　上記従来のマフラーでは、マフラー本体にプロテクタ取付け用の取付けステーを溶接等で設けた後、さらにこの取付けステーにプロテクタをネジ固定する必要があるため製造工数を要するという問題があった。また、ネジ固定では振動等により緩む、あるいはネジを緩めて比較的容易に盗難されるという問題もあった。 The conventional muffler has a problem in that it requires a manufacturing man-hour because it is necessary to fix the protector to the mounting stay by screwing the mounting stay for attaching the protector to the muffler body by welding or the like. In addition, there is a problem that the screws are loosened by vibrations or the like, or the screws are loosened and relatively easily stolen.
　そこで、本発明はこのような問題を解決するもので、プロテクタ取付けの手間を削減でき、しかも確実な取り付けが可能なマフラーを提供することを目的とする。 Therefore, the present invention solves such a problem, and an object of the present invention is to provide a muffler that can reduce the trouble of mounting the protector and can be securely mounted.
　上記目的を達成するために、本第１発明では、本体（２）外周の少なくとも一部を覆うプロテクタ（１）を備えたマフラー（Ｍ）であって、マフラー本体（２）を、消音機構を収容する筒体（２１）と、当該筒体（２１）の両側開口を閉鎖するとともに排気流通口（３１，３２）を設けた端板（２２，２３）とで構成し、筒体（２１）の開口縁と端板（２２，２３）の外周縁とが巻締めによって結合されているとともに、巻締め部（２４）にプロテクタ（１）の一部（１３，１４）が一体に結合されている。 To achieve the above object, according to the first aspect of the present invention, there is provided a muffler (M) provided with a protector (1) covering at least a part of the outer periphery of the main body (2). A cylindrical body (21) is configured by a cylindrical body (21) to be accommodated and end plates (22, 23) provided with exhaust outlets (31, 32) while closing both side openings of the cylindrical body (21). And the outer peripheral edges of the end plates (22, 23) are coupled by winding and a part (13, 14) of the protector (1) is integrally coupled to the winding portion (24). Yes.
　本第１発明においては、筒体の開口縁と端板の外周縁とを巻締めによって結合する際に巻締め部に同時にプロテクタの一部を結合することができるから、従来のようにマフラー本体に取付けステーを設けたり、取付けステーにプロテクタをネジ固定する必要が無く、プロテクタ取付けの工数が削減できる。また、ネジ固定のように振動等によって緩むことがないから、確実な取り付けが可能である。 In the first invention, when the opening edge of the cylindrical body and the outer peripheral edge of the end plate are joined by winding, a part of the protector can be simultaneously connected to the winding part. There is no need to provide a mounting stay or screw the protector to the mounting stay, and the number of steps for mounting the protector can be reduced. Moreover, since it does not loosen due to vibration or the like unlike screw fixing, it can be securely attached.
　本第２発明では、前記プロテクタの端縁（１３，１４）にフランジ部（１５，１６）が形成されて、当該フランジ部（１５，１６）が巻締め部（２４）と筒体（２１）外周との間に狭着されて結合状態となっている。 In the second invention, flange portions (15, 16) are formed on the edges (13, 14) of the protector, and the flange portions (15, 16) are connected to the tightening portion (24) and the cylindrical body (21). It is tightly attached to the outer periphery and is in a coupled state.
　本第２発明においては、フランジ部を巻締め部と筒体外周との間に狭着しているから、巻締め加工の完成と同時にフランジ部の挟着を行うことができる。 In the second aspect of the invention, the flange portion is tightly sandwiched between the tightening portion and the outer periphery of the cylindrical body, so that the flange portion can be clamped simultaneously with the completion of the tightening process.
　本第３発明では、前記プロテクタ（１）は、前記筒体（２１）の外周に略平行に延びてその両端縁（１３，１４）が筒体（２１）外周面に向けて屈曲し、屈曲した先端に前記フランジ部（１５，１６）が形成されている。 In the third invention, the protector (1) extends substantially parallel to the outer periphery of the cylindrical body (21), and both end edges (13, 14) are bent toward the outer peripheral surface of the cylindrical body (21). The flanges (15, 16) are formed at the tip.
　本第３発明においては、両端縁先端のフランジ部が狭着されることによってプロテクタがより確実にマフラー本体に取り付けられる。 In the third aspect of the invention, the protector can be more securely attached to the muffler main body by narrowing the flange portions at the ends of both end edges.
　上記カッコ内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。 The symbols in the parentheses indicate the correspondence with specific means described in the embodiments described later.
　以上のように、本発明のマフラーによれば、プロテクタ取付けの手間が削減され、しかも確実な取り付けが可能である。 As described above, according to the muffler of the present invention, the trouble of attaching the protector is reduced, and reliable attachment is possible.
本発明の一実施形態を示す、プロテクタを設けた二輪車用マフラーの平面図である。It is a top view of the muffler for two-wheeled vehicles which provided the protector which shows one Embodiment of this invention. 図１のＡ矢視端面図である。FIG. 2 is an end view taken along arrow A in FIG. 1. 図１のＢ矢視端面図である。FIG. 2 is an end view as viewed in the direction of arrow B in FIG. 1. プロテクタの平面図である。It is a top view of a protector. 図４のＣ矢視端面図である。FIG. 5 is an end view taken in the direction of arrow C in FIG. 4. 図４のＤ矢視端面図である。FIG. 5 is an end view taken in the direction of arrow D in FIG. 4. 図１のVII－VII線に沿った断面図である。FIG. 7 is a sectional view taken along line VII-VII in FIG. 1. 巻締め工程を示す断面図である。It is sectional drawing which shows a winding process.
　なお、以下に説明する実施形態はあくまで一例であり、本発明の要旨を逸脱しない範囲で当業者が行う種々の設計的改良も本発明の範囲に含まれる。 The embodiment described below is merely an example, and various design improvements made by those skilled in the art without departing from the gist of the present invention are also included in the scope of the present invention.
　図１にはプロテクタ１を設けた二輪車用マフラーＭの平面図を示し、図２、図３にはそれぞれ図１のＡ矢視およびＢ矢視の端面図を示す。マフラー本体２はステンレスの金属板を円筒状に成形した筒体２１を備えており、筒体２１の内部には公知の消音機構が収容されている。 FIG. 1 shows a plan view of a muffler M for a motorcycle provided with a protector 1, and FIGS. 2 and 3 show end views taken along arrows A and B in FIG. 1, respectively. The muffler body 2 includes a cylindrical body 21 formed by cylindrically forming a stainless metal plate, and a known silencing mechanism is accommodated inside the cylindrical body 21.
　筒体２１の両側開口は後述する構造で装着された端板２２，２３によって閉鎖されている。上流側の端板２２の中心からは、図略の排気管に連結される排気流通口としての流入管３１の一端が突出しており、また下流側の端板２３の中心からはやや下方に向けて排気流通口としてのテールパイプ３２が突出している。 Both side openings of the cylindrical body 21 are closed by end plates 22 and 23 mounted in a structure to be described later. From the center of the upstream end plate 22, one end of an inflow pipe 31 as an exhaust circulation port connected to an exhaust pipe (not shown) protrudes, and slightly downward from the center of the downstream end plate 23. A tail pipe 32 as an exhaust circulation port protrudes.
　プロテクタ１はマフラー本体２の上半部一側面（二輪車に設置した場合に外側になる面）に設けられている。プロテクタ１はステンレスの金属板を一体成形したもので、図４にその平面図を示し、図５、図６にそれぞれ図４のＣ矢視およびＤ矢視の端面図を示す。 The protector 1 is provided on one side of the upper half of the muffler main body 2 (the surface that becomes the outer side when installed on a motorcycle). The protector 1 is formed by integrally forming a stainless steel metal plate. FIG. 4 shows a plan view thereof, and FIGS. 5 and 6 show end views as viewed in the direction of arrows C and D in FIG.
　プロテクタ１は全体として断面円弧状に成形されており、円弧の曲率半径を同一に保ちつつ筒体２１の外周面に平行に延びている。プロテクタ１は、マフラー本体２に取り付けた際の上流側端部１１が相対的に大きい幅とされ、これから他端の下流側端部１２に向けて直線的に漸次小幅とされている。 The protector 1 is formed in a circular arc shape as a whole, and extends parallel to the outer peripheral surface of the cylindrical body 21 while maintaining the same radius of curvature of the circular arc. When the protector 1 is attached to the muffler body 2, the upstream end 11 has a relatively large width, and gradually decreases gradually toward the downstream end 12 at the other end.
　そして、プロテクタ１の両端縁１３，１４は上流側および下流側のいずれも段付きに屈曲して同量縮径変形させられており、各端縁１３，１４には長手方向の外方へ一定幅で折り曲げられたフランジ部１５，１６が形成されている。これらフランジ部１５，１６の内周曲率半径は筒体２１の外周半径とほぼ等しくなっている。 The both end edges 13 and 14 of the protector 1 are bent stepwise on both the upstream side and the downstream side to be deformed by the same amount, and the end edges 13 and 14 are fixed outward in the longitudinal direction. Flange portions 15 and 16 bent at a width are formed. The inner peripheral radii of the flange portions 15 and 16 are substantially equal to the outer peripheral radius of the cylindrical body 21.
　図７にはマフラーＭの上流側端部におけるプロテクタ１の取り付け状態を示す。図７において、筒体２１の上流側開口縁は上流側端板２２の外周縁と二重巻締めによって全周が気密的に結合されており、この巻締め部２４にプロテクタ１の上流側端縁１３に形成されたフランジ部１５が挟着されている。 FIG. 7 shows the protector 1 attached to the upstream end of the muffler M. In FIG. 7, the upstream opening edge of the cylindrical body 21 is hermetically coupled with the outer peripheral edge of the upstream end plate 22 by double winding, and the upstream end of the protector 1 is connected to the winding portion 24. A flange portion 15 formed on the edge 13 is sandwiched.
　プロテクタ１の下流側端縁１４（図４）のフランジ部１６も同様の構造で、筒体２１の下流側開口縁と下流側端板２３の外周縁との巻締め部に挟着されている。このようにして、プロテクタ１は上下流側の端縁１３，１４のフランジ部１５，１６がそれぞれ上記巻締め部に挟着されることによってマフラー本体２に固定されている。 The flange portion 16 of the downstream end edge 14 (FIG. 4) of the protector 1 has a similar structure, and is sandwiched between winding portions between the downstream opening edge of the cylindrical body 21 and the outer peripheral edge of the downstream end plate 23. . In this way, the protector 1 is fixed to the muffler body 2 by the flange portions 15 and 16 of the upstream and downstream end edges 13 and 14 being sandwiched between the winding fastening portions.
　図８にはプロテクタ１の上流側端縁１３を固定する際の工程を示す。図８（１）に示すように、筒体２１の開口縁に外方へ直角に屈曲するフランジ部２１１を形成し、一方、上流側端板２２には外周縁全周に、段付きの直角屈曲部２２１を形成して、端板２２の内周部を筒体２１内に嵌着し、屈曲部２２１から外方へ相対的に長く延ばしたフランジ部２２２を上記フランジ部２１１に沿って位置させる。 FIG. 8 shows a process for fixing the upstream edge 13 of the protector 1. As shown in FIG. 8 (1), a flange portion 211 that bends outward at a right angle is formed at the opening edge of the cylindrical body 21, while the upstream end plate 22 has a stepped right angle on the entire outer periphery. A bent portion 221 is formed, the inner peripheral portion of the end plate 22 is fitted into the cylindrical body 21, and a flange portion 222 extending relatively long outward from the bent portion 221 is positioned along the flange portion 211. Let
　続いて図８（２）に示すように、フランジ部２１１を覆うようにフランジ部２２２を折り返し、この状態でプロテクタ１の上流側端縁１３のフランジ部１５を筒体２１の外周に接して位置させてフランジ部２１１に当接させる。 Subsequently, as shown in FIG. 8B, the flange portion 222 is folded back so as to cover the flange portion 211, and the flange portion 15 of the upstream edge 13 of the protector 1 is in contact with the outer periphery of the cylindrical body 21 in this state. It is made to contact | abut to the flange part 211.
　その後、フランジ部２１１とフランジ部２２２を一体にフランジ部１５上へ折り曲げて（図８（２）中の矢印）、二重巻締めを完成させる（図７）と同時に、巻締め部２４によってフランジ部１５を筒体２１外周面との間で挟持させる。 Thereafter, the flange portion 211 and the flange portion 222 are integrally bent onto the flange portion 15 (arrow in FIG. 8 (2)) to complete the double winding (FIG. 7), and at the same time, the flange 24 is moved by the winding portion 24. The portion 15 is held between the outer peripheral surface of the cylindrical body 21.
　上記実施形態ではプロテクタを金属板の成形品としたが、これに限られず、例えば樹脂成形品としても良い。また、巻締めは必ずしも二重巻締めである必要は無い。上記実施形態ではプロテクタにフランジ部を形成してこれを巻締め部と筒体外周面との間に狭着するようにしたが、必ずしもフランジ部を形成する必要はなく、プロテクタの一部を狭着するようにしても良い。さらに、巻締め部にプロテクタの一部を結合する方法は狭着に限られず、例えば巻締め部に巻き込むようにしても良い。 In the above embodiment, the protector is a metal plate molded product, but is not limited thereto, and may be a resin molded product, for example. Moreover, the winding does not necessarily need to be double winding. In the above embodiment, the flange portion is formed on the protector, and the flange portion is tightly fitted between the tightening portion and the outer peripheral surface of the cylindrical body. However, it is not always necessary to form the flange portion, and a part of the protector is narrowed. You may make it wear. Furthermore, the method of connecting a part of the protector to the tightening portion is not limited to narrowing, and for example, the protector may be wound around the tightening portion.
１…プロテクタ、１３，１４…端縁（一部）、１５，１６…フランジ部、２…本体、２１…筒体、２２，２３…端板、２４…巻締め部、３１…流入管（排気流通口）、３２…テールパイプ（排気流通口）、Ｍ…マフラー。 DESCRIPTION OF SYMBOLS 1 ... Protector, 13, 14 ... End edge (part), 15, 16 ... Flange part, 2 ... Main body, 21 ... Cylindrical body, 22, 23 ... End plate, 24 ... Tightening part, 31 ... Inflow pipe (exhaust pipe) Distribution port), 32 ... Tail pipe (exhaust distribution port), M ... Muffler.

Claims (3)

  1. 本体外周の少なくとも一部を覆うプロテクタを備えたマフラーであって、マフラー本体を、消音機構を収容する筒体と、当該筒体の両側開口を閉鎖するとともに排気流通口を設けた端板とで構成し、筒体の開口縁と端板の外周縁とが巻締めによって結合されているとともに、巻締め部にプロテクタの一部が一体に結合されていることを特徴とするマフラー。 A muffler provided with a protector that covers at least a part of the outer periphery of the main body, the muffler main body comprising a cylinder body that houses a silencing mechanism, and an end plate that closes both side openings of the cylinder body and is provided with an exhaust circulation port A muffler characterized in that the opening edge of the cylinder and the outer peripheral edge of the end plate are coupled by winding and a part of the protector is integrally coupled to the winding portion.
  2. 前記プロテクタの端縁にフランジ部が形成されて、当該フランジ部が巻締め部と筒体外周との間に狭着されて結合状態となっている請求項１に記載のマフラー。 The muffler according to claim 1, wherein a flange portion is formed at an edge of the protector, and the flange portion is tightly coupled between the winding portion and the outer periphery of the cylindrical body.
  3. 前記プロテクタは、前記筒体の外周に略平行に延びてその両端縁が筒体外周面に向けて屈曲し、屈曲した先端に前記フランジ部が形成されている請求項２に記載のマフラー。 The muffler according to claim 2, wherein the protector extends substantially parallel to the outer periphery of the cylindrical body, and both end edges thereof are bent toward the outer peripheral surface of the cylindrical body, and the flange portion is formed at a bent tip.
PCT/JP2013/060419 2013-04-05 2013-04-05 Muffler WO2014162578A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615416U (en) * 1979-07-17 1981-02-10
JPH07259531A (en) * 1994-03-28 1995-10-09 Calsonic Corp Muffler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5615416U (en) * 1979-07-17 1981-02-10
JPH07259531A (en) * 1994-03-28 1995-10-09 Calsonic Corp Muffler

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