JPH10212940A - Exhaust device of snowmobile - Google Patents

Exhaust device of snowmobile

Info

Publication number
JPH10212940A
JPH10212940A JP1578897A JP1578897A JPH10212940A JP H10212940 A JPH10212940 A JP H10212940A JP 1578897 A JP1578897 A JP 1578897A JP 1578897 A JP1578897 A JP 1578897A JP H10212940 A JPH10212940 A JP H10212940A
Authority
JP
Japan
Prior art keywords
exhaust
expansion chamber
exhaust system
steering
snowmobile
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.)
Withdrawn
Application number
JP1578897A
Other languages
Japanese (ja)
Inventor
Yuichiro Tsuruta
雄一郎 鶴田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP1578897A priority Critical patent/JPH10212940A/en
Publication of JPH10212940A publication Critical patent/JPH10212940A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M27/00Propulsion devices for sledges or the like
    • B62M27/02Propulsion devices for sledges or the like power driven
    • B62M2027/023Snow mobiles characterised by engine mounting arrangements

Landscapes

  • Exhaust Silencers (AREA)

Abstract

PROBLEM TO BE SOLVED: To arrange the exhaust expansion room and silencer of the exhaust device of a snowmobile in a small space reasonably and ensure a required capacity. SOLUTION: In this device, an engine 21 is arranged on the rear side of a steering shaft part 14 for steering the steering member arranged in a front part, an exhaust system 30 consisting of an exhaust expansion room 31 and a silencer 35 is arranged in the front side of this steering shaft part 14, the exhaust system is formed in a nearly arc shape around the steering shaft part and arranged so as to extend in the right/left directions of a car body and the exhaust expansion room and silencer are arranged so as to overlap each other in view of a plane.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、スノーモビルの排
気装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snowmobile exhaust system.

【0002】[0002]

【従来の技術】排気系は、エンジンの後方に配置するの
が一般である。ところで排気系を前部に配置し、且つ排
気系の構成機器を上下に配置した例として、スノーモビ
ルの排気装置において、従来実開昭49−15609
号公報、実公昭50ー42490号公報、実公昭5
1−6817号公報が開示されている。
2. Description of the Related Art Generally, an exhaust system is disposed behind an engine. By the way, as an example in which the exhaust system is arranged at the front and the components of the exhaust system are arranged up and down, in a snowmobile exhaust system, a conventional actual exhaust system is disclosed in Japanese Utility Model Laid-Open No. 49-15609.
No., Japanese Utility Model Publication No. 50-42490, Japanese Utility Model Publication No. 5
No. 1-6817 is disclosed.

【0003】これ等〜の技術は、何れも比較的大型
で、複数の人が搭乗する所謂雪上車タイプの車両で、大
きな内部スペースを備える前部カバー内に消音器を上下
に配置し、上下の消音器は、個々にフレーム等に取付、
支持されている。これ等の技術は、雪上車前部に配置さ
れる操舵機構に考慮することなく排気系が設置されてい
る。
All of these techniques are relatively large, so-called snowmobile-type vehicles in which a plurality of persons are mounted, and a muffler is vertically arranged in a front cover having a large internal space. Silencers are individually mounted on frames, etc.
Supported. In these technologies, an exhaust system is installed without considering a steering mechanism arranged in front of a snowmobile.

【0004】一方、小型の雪上車両、所謂スノーモビル
と称されるタイプのものでは、特開平1−28979
2号の技術が開示されており、この技術は、スペース的
に小さいフロントカウル内に排気系を配置し、この技術
は、平面視凹型で、側面視ループ状の排気管をフロント
カウルの前部内に上下に配置し、排気管の後方の側方に
消音器を配置している。
On the other hand, a small snow vehicle, a type called a so-called snowmobile, is disclosed in Japanese Patent Laid-Open No. 1-28979.
No. 2 discloses a technology in which an exhaust system is disposed in a front cowl that is small in space. This technology is a technology in which an exhaust pipe having a concave shape in a plan view and a loop shape in a side view is provided in a front portion of the front cowl. The silencer is placed on the side of the exhaust pipe.

【0005】[0005]

【発明が解決しようとする課題】ところで、前記〜
の技術は、比較的大型の雪上車には採用し得るが、小型
のスノーモビルの上記した従来の排気系の配置構造を採
用しようとした場合、操舵機構との関係、フレームへの
取付、支持の関係等で採用し難い。そこで小型のスノー
モビルへの適用を前記で開示された排気系で検討する
と、以下の如き不都合がある。
SUMMARY OF THE INVENTION
Can be applied to relatively large snowmobiles, but when trying to adopt the above-mentioned conventional exhaust system arrangement structure of a small snowmobile, the relationship with the steering mechanism, the attachment to the frame, and the support It is difficult to adopt in relations. Therefore, when the application to a small snowmobile is examined in the exhaust system disclosed above, there are the following inconveniences.

【0006】排気管が上下に配置されてはいるが、側面
視でループ状をなし、上下の排気管をフロントカウル前
部内に配置しつつ、排気管全体が大型化する。狭い前部
のフロントカウル内の空間内に、エンジン、上下、且つ
側面視ループ状の排気管が混在した中に操舵機構を配設
するので、メンテナンス等の点において不都合がある。
Although the exhaust pipes are arranged vertically, the entire exhaust pipe becomes larger while the upper and lower exhaust pipes are arranged in a front part of the front cowl while forming a loop shape in a side view. Since the steering mechanism is disposed in the narrow front cowl space in which the engine, the upper and lower, and the exhaust pipe having a loop shape in a side view are mixed, there is a problem in terms of maintenance and the like.

【0007】又排気系を構成する消音器は、前記した排
気管後方の側部に別途配設されており、フロントカウル
前部のスペース利用上好ましいとは言い難く、排気系の
設置スペースが大きくなり、周辺機器類の設置スペース
が制約され、フロントカウル内のスペースの有効利用上
好ましくない。更に、排気系を構成する前記した排気
管、消音器は、個々にフレーム側に取付、支持せざるを
得ず、取付、支持部材が多くなり、又取付、支持構造も
複雑化し、取付、組付工数も多くなる。
The muffler constituting the exhaust system is separately provided on the rear side of the exhaust pipe, which is not preferable in terms of space utilization in front of the front cowl, and the installation space for the exhaust system is large. Therefore, the installation space for the peripheral devices is limited, which is not preferable in terms of effective use of the space in the front cowl. Further, the exhaust pipe and the muffler constituting the exhaust system must be individually mounted and supported on the frame side, the number of mounting and supporting members is increased, and the mounting and supporting structure is complicated, and the mounting and assembling are performed. The number of man-hours will increase.

【0008】本発明は、以上の課題を解決すべくなされ
たもので、その目的とする処は、小型のスノーモビルに
おいて、消音器を含む排気系を、限られたスペースを利
用し、最少のスペースで合理的に配設し、しかも排気消
音上も優れた排気系を実現し、且つ消音器を含む排気系
の取付、支持を簡易化し、更に前部に配置した排気系と
操舵機構との配置を合理的としたスノーモビルの排気装
置を提供する。
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a small snowmobile by using an exhaust system including a silencer in a limited space and using a minimum space. In addition, it realizes an exhaust system that is reasonably arranged and has excellent exhaust silencing, and simplifies the installation and support of the exhaust system including the silencer, and furthermore, the arrangement of the exhaust system and the steering mechanism arranged in the front part The present invention provides a snowmobile exhaust device that is rationalized.

【0009】[0009]

【課題を解決するための手段】上記課題を解決するため
に請求項1は、前部に配置された操向部材を操向する操
向軸の後方にエンジンを配置し、該操向軸の前方側に、
排気膨張室、及び消音器からなる排気系を配置し、排気
系を、操向軸を中心とする略円弧状に形成して車体の左
右方向にわたって配設するとともに、排気膨張室と消音
器とを互いに平面視で上下に重なるように配置した。
According to a first aspect of the present invention, an engine is disposed behind a steering shaft for steering a steering member disposed at a front portion, and the engine is disposed on the rear of the steering shaft. On the front side,
An exhaust system including an exhaust expansion chamber and a muffler is arranged, and the exhaust system is formed in a substantially arc shape with the steering axis as a center and arranged in the left and right direction of the vehicle body. Were arranged so as to overlap each other in plan view.

【0010】請求項1においては、前部に消音器、排気
膨張室を含む排気系を、最少のスペースで、合理的に配
置することができ、又操向軸前後にエンジン、膨張室、
消音器を上下に配置した消音器を含む排気系を配設する
ことができ、スノーモビルの前後寸法を小さくすること
ができ、且つ膨張室と消音器を上下に配置したので、ス
ノーモビルの幅も抑えることができ、スノーモビルの小
型化を図ることができ、取り回し性に優れたスノーモビ
ルを得ることができる。
In the first aspect, an exhaust system including a muffler and an exhaust expansion chamber at the front can be rationally arranged in a minimum space, and an engine, an expansion chamber,
An exhaust system including a muffler with mufflers arranged vertically can be arranged, the front and rear dimensions of the snowmobile can be reduced, and the width of the snowmobile can be reduced because the expansion chamber and muffler are arranged vertically. This makes it possible to reduce the size of the snowmobile, and to obtain a snowmobile with excellent maneuverability.

【0011】請求項2は、スノーモビルの前部には先細
りのフロントカウルを備え、該フロントカウル内に前記
排気系を配置し、該排気系の排気膨張室を先端側の空間
内に配置し、該排気膨張室の後上方に消音器を配置し
た。
According to a second aspect of the present invention, a snowmobile is provided with a tapered front cowl at a front portion thereof, the exhaust system is arranged in the front cowl, and an exhaust expansion chamber of the exhaust system is arranged in a space on the tip side. A muffler was disposed above and behind the exhaust expansion chamber.

【0012】フロントカウル内の前方の突出する空間内
に膨張室を配置したので、排気膨張室の容量を大きく設
定することができ、消音効果に優れた排気系を得ること
ができる。
Since the expansion chamber is disposed in the front protruding space in the front cowl, the capacity of the exhaust expansion chamber can be set large, and an exhaust system excellent in noise reduction effect can be obtained.

【0013】請求項3は、排気膨張室と消音器とを相互
に結合し、これ等を共通の支持部材でフレームに取付、
支持した。請求項3においては、排気膨張室、消音器か
らなる排気系を、一方の支持部材のみでフレーム側に取
付支持するので、支持構造の部品点数が少なくなり、又
フレーム側の排気系支持構造も簡素化する。
According to a third aspect of the present invention, the exhaust expansion chamber and the muffler are connected to each other, and these are attached to the frame by a common support member.
Supported. In the third aspect, the exhaust system including the exhaust expansion chamber and the muffler is mounted and supported on the frame side by only one support member, so that the number of parts of the support structure is reduced, and the exhaust system support structure on the frame side is also provided. Simplify.

【0014】請求項4は、スノーモビルの操向機構はリ
ンク式操舵機構を備え、該操舵リンク機構を前記排気系
の円弧状の内側の空間に配置した。請求項4において
は、前後方向に揺動等する操舵リンク機構は、上下に配
置された膨張室、消音器の後方に形成される弧状の凹部
内に臨むこととなり、リンク式の操舵機構を採用しつ
つ、リンクの作動の円滑を無理無く確保することができ
る。
According to a fourth aspect of the present invention, the steering mechanism of the snowmobile includes a link-type steering mechanism, and the steering link mechanism is disposed in an arc-shaped inner space of the exhaust system. According to the fourth aspect, the steering link mechanism that swings in the front-rear direction or the like faces the expansion chambers arranged vertically and the arc-shaped recess formed behind the muffler, and employs a link-type steering mechanism. In addition, smooth operation of the link can be ensured without difficulty.

【0015】[0015]

【発明の実施の形態】本発明の実施の形態を添付図に基
づいて以下に説明する。なお、図面は符号の向きに見る
ものとする。図1は本発明の排気装置を採用したスノー
モビル全体の側面図で、フロントカウル等の外観カバー
を想像線で示した図、図2は図1の平面図、図3は排気
系を含むスノーモビル前部の拡大側面図、図4は同平面
図で説明の便宜上ハンドルを除いた図、図5は排気系の
分解斜視図、図6は膨張室の平面図、図7は消音器の縦
断平面図である。
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of the entire snowmobile employing the exhaust device of the present invention, in which an exterior cover such as a front cowl is shown by imaginary lines, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a front view of a snowmobile including an exhaust system. 4 is an enlarged side view of the portion, FIG. 4 is a plan view of the same, excluding a handle for convenience of explanation, FIG. 5 is an exploded perspective view of an exhaust system, FIG. 6 is a plan view of an expansion chamber, and FIG. It is.

【0016】図1、図2において1はスノーモビルで、
実施例は乗員がフラットなフロア部に立って乗り、操縦
するタイプを示す。2はフレームを示し、フレーム2は
前部の左右のヘッド部材3,3、これから後下傾するよ
うに後方に延出された左右のメインフレーム4,4を備
え、メインフレーム4,4は、前部が幅狭で、中間部〜
後部にかけて幅広に形成されている。メインフレーム
4,4の後部には後部エンジンハンガー5を垂下し、後
端部は前後方向に延びるフロア部6の前部に結合され、
フロア部6の下方には、駆動用トラックベルト機構7が
配設されている。
1 and 2, reference numeral 1 denotes a snowmobile.
The embodiment shows a type in which an occupant stands and rides on a flat floor. Reference numeral 2 denotes a frame. The frame 2 includes front left and right head members 3 and 3 and left and right main frames 4 and 4 extending rearward so as to tilt rearward and downward. The front part is narrow, the middle part ~
It is formed wide toward the rear. At the rear of the main frames 4 and 4, a rear engine hanger 5 hangs down, and the rear end is connected to the front of a floor 6 extending in the front-rear direction.
A drive track belt mechanism 7 is provided below the floor section 6.

【0017】駆動用トラックベルト機構7は、ベルト7
aの前部内に駆動輪、後部に縦動輪7bを備え、この間
の上下に遊動輪7c,7dを備え、駆動用トラックベル
ト機構7のフレーム7eとフロア部6との間には、緩衝
器7f、及び懸架用バネ7gを介設し、駆動用トラック
ベルト機構7をユニットスイング式に構成する。
The driving track belt mechanism 7 includes a belt 7
a, a driving wheel is provided in a front portion, a vertical driving wheel 7b is provided in a rear portion, idler wheels 7c and 7d are provided above and below, and a shock absorber 7f is provided between a frame 7e of the driving track belt mechanism 7 and the floor portion 6. , And a suspension spring 7g are interposed to configure the drive track belt mechanism 7 in a unit swing type.

【0018】フロア部6の前半部〜後部にかけてサイド
ガード板8,8を起立して設け、フロア部6の後端部に
は図2で明示したように平面視凹型のリヤグリップ9、
及びリヤフェンダ10を設置する。尚エンジンは水冷式
エンジンを搭載し、図2において11はエンジン冷却用
の熱交換器を示し、又12,12はメインフレーム4,
4の各外側に突出するように設けたサイドガードであ
る。
Side guard plates 8, 8 are provided upright from the front half to the rear of the floor portion 6, and the rear end of the floor portion 6, as shown in FIG.
And the rear fender 10 are installed. The engine is equipped with a water-cooled engine. In FIG. 2, reference numeral 11 denotes a heat exchanger for cooling the engine.
4 are side guards provided so as to protrude to the outside of each.

【0019】次に操舵機構を説明すると、図4に示すよ
うに、フレーム2の前部左右に設けたヘッド部材3,3
の間には中間部を後方に凹出させた連結部材3aを架設
してヘッド部材3,3を一体的に結合し、連結部材3a
の前面に前方に中間部を凹出させた保持部材13を配設
し、双方の凹部3b,13aで形成された筒状部14を
介してフロントフォーク等の操向支軸部19上部のイン
ナーチューブ等の固定支軸27aを抱持するように固定
する。保持部材13の上下にはボス部15,18を設け
る。
Next, the steering mechanism will be described. As shown in FIG.
A connecting member 3a having an intermediate portion recessed rearward is provided between them, and the head members 3 and 3 are integrally connected.
A holding member 13 having an intermediate portion recessed forward is provided on the front surface of the steering shaft 19, and an inner portion of the upper part of the steering support shaft portion 19 such as a front fork is provided via a cylindrical portion 14 formed by the two recesses 3b and 13a. It is fixed so as to hold the fixed support shaft 27a such as a tube. Bosses 15 and 18 are provided above and below the holding member 13.

【0020】上部ボス部15には、上下揺動するハンド
ル16の基部16aを支持し、ボス部15の上端部の前
部には、操向軸の前方に突出する操舵リンク機構17の
アッパーリンク17aを枢着し、アッパーリンク17a
の下端部にはロアリンク17bの上端部を枢着し、ロア
リンク17bの下端部をヘッド部材3,3の下端部に配
設した下部ボス部18に枢着する。下部ボス部18の下
方には、下方に延出された実質的な操向支軸部19を構
成するフロントフォーク等を配設し、これの下端部に
は、操向用のスキー20を軸20aを介して伏仰自在に
取り付ける。スキー20は、図1、図3の軸線cを中心
として操向される。以上のハンドル16は、上下揺動
し、揺動を前記リンク機構17の前方への揺動で吸収
し、一方、ハンドル16の左右の操舵動は、リンク機構
17等を介して下部ボス部18に伝達され、操向支軸部
19を上端部の支軸部を支点として左右の操向動させ、
操向を行なう。
The upper boss portion 15 supports a base 16a of a handle 16 which swings up and down, and a front portion of an upper end portion of the boss portion 15 has an upper link of a steering link mechanism 17 projecting forward of a steering shaft. 17a, and the upper link 17a
The lower end of the lower link 17b is pivotally connected to the lower end of the head member 3, 3 at the lower end of the head member 3, 3. Below the lower boss portion 18, a front fork or the like constituting a substantial steering support shaft portion 19 extending downward is disposed, and a steering ski 20 is provided at a lower end portion thereof. Attach freely via 20a. The ski 20 is steered about the axis c in FIGS. The above handle 16 swings up and down, and the swing is absorbed by the forward swing of the link mechanism 17, while the left and right steering movement of the handle 16 is controlled by the lower boss 18 via the link mechanism 17 and the like. And the steering shaft 19 is steered left and right with the shaft at the upper end as a fulcrum,
Steer.

【0021】かかる操向軸19、即ち、これを回転自在
に支持する前記ヘッド部材3,3間の筒状部14の軸線
の後方にエンジン21を配設し、エンジン21の上方に
燃料タンク22を配設する。エンジン21は、クランク
ケース21aの後部を前記したエンジンハンガーブラケ
ット5に取付、支持し、前部を共用ブラケット23に取
付支持し、共用ブラケット23は、前記したメインフレ
ーム4.4の前部に垂下、設置した。
An engine 21 is disposed behind the steering shaft 19, that is, behind the axis of the cylindrical portion 14 between the head members 3, 3 which rotatably supports the steering shaft 19, and a fuel tank 22 is provided above the engine 21. Is arranged. The engine 21 mounts and supports the rear part of the crankcase 21a to the engine hanger bracket 5 described above, and mounts and supports the front part to the common bracket 23. The common bracket 23 hangs down on the front part of the main frame 4.4 described above. ,installed.

【0022】尚、エンジン21のシリンダヘッド部後方
に気化器24を配置し、該気化器24の後方で、一側方
に配設したエアクリーナ25に気化器を接続する。エア
クリーナ25の反対側には、減速用ギヤケース26を配
設し、ギヤケース26の従動プーリ26aは、エンジン
側方に設けたベルト駆動機構の駆動プーリ27とベルト
27aで連結し、前記した駆動輪7aを駆動する。この
ようにエンジン21を操向軸19、操向軸線cの後方に
配設する。
A carburetor 24 is disposed behind the cylinder head of the engine 21. At the rear of the carburetor 24, the carburetor is connected to an air cleaner 25 disposed on one side. On the opposite side of the air cleaner 25, a reduction gear case 26 is disposed, and a driven pulley 26a of the gear case 26 is connected to a drive pulley 27 of a belt drive mechanism provided on the engine side by a belt 27a. Drive. Thus, the engine 21 is disposed behind the steering shaft 19 and the steering axis c.

【0023】一方、操向軸19を支持するヘッド部材
3,3の前方には、排気系を配設し、前部の排気系、エ
ンジン21、エアクリーナ25、ギヤケース26の側部
を含むスノーモビル1の前部〜中間部をフロントカウル
28、及び左右のサイドカバー30で覆い、フロントカ
ウル28は図1、図3で示すように、下部が前方に延
び、上部が後上傾するように側面視で先細り形状をな
し、又図2、図4で示すように先部が若干先細りぎみの
平面視で弧状をなす。尚、フロントカウル28は、上下
の部材28a,28bに分割されて形成されている。
On the other hand, an exhaust system is provided in front of the head members 3, 3 supporting the steering shaft 19, and the snowmobile 1 includes a front exhaust system, an engine 21, an air cleaner 25, and side portions of a gear case 26. The front to middle portions of the front cowl are covered with a front cowl 28 and left and right side covers 30, and the front cowl 28 is viewed from the side such that a lower portion extends forward and an upper portion tilts rearward and upward as shown in FIGS. 2 and 4, the tip portion has a slightly tapered and arcuate shape in plan view as shown in FIGS. The front cowl 28 is formed by being divided into upper and lower members 28a and 28b.

【0024】排気系30を、図5によりその外観、及び
形状を示し、又排気膨張室、消音器の単体を図6、図7
で示し、又取付状態を図3、図4で示した。排気膨張室
31(以下膨張室と記す)は、図5、図6で明示したよ
うに、平面視が前記操向軸を中心とする略円弧状に形成
し、一端部に排気入口31aを備え、他端部に排気出口
31bを備え、排気出口31bは、後方に屈曲した接続
管部31cを備える。
FIG. 5 shows the appearance and shape of the exhaust system 30, and FIGS. 6 and 7 show the exhaust expansion chamber and the silencer alone.
The mounting state is shown in FIGS. 3 and 4. As shown in FIGS. 5 and 6, the exhaust expansion chamber 31 (hereinafter, referred to as an expansion chamber) is formed in a substantially arc shape in plan view centering on the steering shaft, and has an exhaust inlet 31a at one end. The other end is provided with an exhaust outlet 31b, and the exhaust outlet 31b is provided with a connecting pipe portion 31c bent rearward.

【0025】膨張室31は、中間部31dが前方に膨出
し、左右の部分31e,31eには、内側に突出するよ
うに棒状の取付スティ32,32を対向して対称的に突
設する。又膨張室31の中間部31dの底面には、図5
で示すように同様の取付スティ32を、その先部が後方
を向くように設置する。各取付スティ32…は、先部に
フランジ部32aを備え、左右の取付スティ32,32
は中央部のものと同様に膨張室31の左右の部分31
e,31eの底面に設ける。
In the expansion chamber 31, bar-shaped mounting stays 32 are symmetrically protruded from left and right portions 31e, 31e so as to face inward so as to protrude inward. The bottom surface of the intermediate portion 31d of the expansion chamber 31 is
As shown by, a similar mounting stay 32 is installed such that the tip thereof faces rearward. Each of the mounting stays 32 has a flange portion 32a at the front end thereof.
Are the left and right portions 31 of the expansion chamber 31 in the same manner as the central portion.
e, 31e.

【0026】膨張室31の前方に弯曲した中間部31d
の上面には、支持板33を設置し、支持板33には、上
向きに取付ボス部33aを備える。又膨張室31の一端
部、図6では排気入口31aを有する右側部分の端部寄
り部分の上面には、平面視逆L型出、上方に起立する消
音器の排気排出管用取付スティ34を設置する。
An intermediate portion 31d curved forward of the expansion chamber 31
A support plate 33 is provided on the upper surface of the support plate 33, and the support plate 33 is provided with a mounting boss 33a facing upward. In addition, on one end of the expansion chamber 31, in FIG. 6, on the upper surface near the end on the right side having the exhaust inlet 31 a, an exhaust discharge pipe mounting stay 34 of a silencer that rises upward and that stands up is provided. I do.

【0027】消音器35は図5、図7に示す如くで、図
7は一例としての内部構造をも示し、消音器35は、前
記膨張室31と同様に平面視が前記操向軸を中心とする
略円弧状に形成し、前後方向に深さは前記膨張室31よ
りも小さく、中間部35aは前後方向の容量が大きく、
左右の部分35b,35bは若干小さい。
The silencer 35 is as shown in FIGS. 5 and 7, and FIG. 7 also shows an internal structure as an example. The silencer 35 has the center of the steering shaft in plan view like the expansion chamber 31. The depth in the front-back direction is smaller than that of the expansion chamber 31, and the middle portion 35a has a large capacity in the front-rear direction.
The left and right portions 35b, 35b are slightly smaller.

【0028】消音器35の一端部には排気取入れ管34
cの端部が開口し、該取入れ管35cは内部に延びてス
ティ35dで鋼板部の適所を消音器内面に支持され、一
方、これの反対側には排気排出管35eの後部をスティ
35fで支持し、排出管35eは長いので、中間部を別
途スティ35gで支持し、排出管35eは他端部から外
部に延出し、下方に折曲、延出してテイルパイプ37を
構成した。
An exhaust intake pipe 34 is provided at one end of the silencer 35.
The end of c is open, and the intake pipe 35c extends inward, and the right part of the steel plate part is supported on the inner surface of the muffler by the stay 35d, while the rear part of the exhaust discharge pipe 35e is provided on the opposite side by the stay 35f. Since the support and the discharge pipe 35e are long, an intermediate portion is separately supported by a stay 35g, and the discharge pipe 35e extends outward from the other end, and is bent and extended downward to form a tail pipe 37.

【0029】以上の消音器35の中間部35aの先部下
面には、前記膨張室の支持板33に対応する支持板36
を前方に突出し、又排出管35eの外部突出部には、前
記スティ34に対応するスティ38を設ける。
A support plate 36 corresponding to the support plate 33 of the expansion chamber is provided on the lower surface of the front end of the intermediate portion 35a of the silencer 35.
Are projected forward, and a stay 38 corresponding to the stay 34 is provided at an externally projecting portion of the discharge pipe 35e.

【0030】以上の排気系30を構成する膨張室31
は、図4に示すように、前後方向の寸法が消音器35よ
りも大きく、実質的な容量が大きく、消音器35は、膨
張室31に比較して前後方向の寸法が小さい。
The expansion chamber 31 constituting the exhaust system 30 described above
As shown in FIG. 4, the size in the front-rear direction is larger than that of the silencer 35 and the capacity is substantial, and the size of the silencer 35 in the front-rear direction is smaller than that of the expansion chamber 31.

【0031】次に排気系30の図5を中心として取付構
造を説明する。図5において40は排気系支持スティ
で、スティ本体40aは図5、図4で明らかなように平
面視がU字型にパイプ材等を折曲して形成し、前方膨出
した弧状の中間部40b、左右の脚部40c,40cを
備え、両端部に取付部40d,40dを備える。
Next, the mounting structure of the exhaust system 30 will be described with reference to FIG. In FIG. 5, reference numeral 40 denotes an exhaust system support stay, and a stay main body 40a is formed by bending a pipe material or the like in a U-shape in plan view as is clear from FIGS. The portion 40b includes left and right legs 40c, 40c, and mounting portions 40d, 40d at both ends.

【0032】又左右の脚部40c,40cの後部には、
後上傾したアッパーアーム41,41を備え、これの後
端部には取付部41a,41aを備える。更に左右の脚
部40c,40cの前部には、ロアアーム42,42を
備え、ロアアーム42,42の下端部は、これと直交す
る方向に取付部42a,42aを備える。又左右の脚部
40c,40cの中間部には、支持ブラケット43,4
3を垂下して備える。更に中間部40bには、垂下した
支持ブラケット44を備える。
Also, at the rear of the left and right legs 40c, 40c,
Upper arms 41, 41 are provided which are inclined upward and rearward, and mounting portions 41a, 41a are provided at rear ends thereof. Furthermore, lower arms 42, 42 are provided in front of the left and right legs 40c, 40c, and lower ends of the lower arms 42, 42 are provided with mounting portions 42a, 42a in a direction orthogonal to the lower arms. In the middle of the left and right legs 40c, 40c, support brackets 43, 4 are provided.
3 is provided hanging down. Further, the intermediate portion 40b includes a hanging support bracket 44.

【0033】以上の支持スティ40は、左右の脚部40
c,40cの後端部の取付部40d,40dを前記した
エンジン21の前部を取付、支持する共用スティ23,
23の下端部にネジ止め等で結合し、フレーム側に取り
付ける。又アッパーアーム41,41の後端部の取付部
41a,41aを前記した左右のヘッド部材3,3の側
部にネジ止め等で結合し、フレーム側に取り付ける。
The above-mentioned support stays 40 are formed by the left and right leg portions 40.
c, 40c, a common stay 23 for mounting and supporting the front portion of the engine 21 with the mounting portions 40d, 40d at the rear end.
23 and is attached to the frame side with screws or the like. The mounting portions 41a, 41a at the rear ends of the upper arms 41, 41 are connected to the side portions of the left and right head members 3, 3 by screws or the like, and mounted on the frame side.

【0034】以上により、スティ40は、左右の脚部4
0c,40cの後端部上下でフレーム側に取付、支持す
る。又ヘッド部材3,3の下部の前記ロアアーム42,
42には、ヘッド部材3,3の前方に延出した遮板45
の前部を支持する。
As described above, the stay 40 is formed by the left and right legs 4
0c and 40c are attached and supported on the frame side at the top and bottom of the rear end. Also, the lower arm 42 below the head members 3,3,
Reference numeral 42 denotes a shielding plate 45 extending forward of the head members 3.
Support the front of the.

【0035】排気系30の取り付けは、膨張室31の上
に消音器35を配置し、膨張室31前部の前記支持板3
3上に消音器35の支持板36を重ね、上の支持板36
の孔からしたの支持板33のボス部33aにネジ等を通
し、相互を結合する。一方、消音器35の前記スティ3
8を下の膨張室31の排気入口31a寄り部上に設けた
スティ34上に重ね、スティ38の左右を下のスティ3
4の左右にネジ止め等で結合する。
The exhaust system 30 is mounted by disposing a muffler 35 on the expansion chamber 31 and disposing the support plate 3 in front of the expansion chamber 31.
3, the support plate 36 of the silencer 35 is placed on the upper support plate 36.
A screw or the like is passed through the boss portion 33a of the support plate 33 formed through the hole, and the boss portion 33a is connected to each other. On the other hand, the stay 3 of the silencer 35
8 on a stay 34 provided on a portion of the lower expansion chamber 31 near the exhaust inlet 31a, and
4 is connected to the left and right by screwing or the like.

【0036】この際、上側の消音器35の排気入口35
cと下の膨張室31の接続管部31cとを嵌合して連結
しておく。このように、膨張室31を下側とし、消音器
35を上側とし、双方を上記したように結合して排気系
アッセンブリーを予め構成しておき、前記した支持ステ
ィ40に排気系30を組み付ける。
At this time, the exhaust inlet 35 of the upper silencer 35
c and the connecting pipe portion 31c of the lower expansion chamber 31 are fitted and connected. In this way, the expansion chamber 31 is set to the lower side, the muffler 35 is set to the upper side, and both are connected as described above to form an exhaust system assembly in advance, and the exhaust system 30 is assembled to the support stay 40 described above.

【0037】以上のように予め下位の膨張室31、上位
の消音器35を組み付けた後、膨張室31をスティ40
上に臨ませる。膨張室31下面の前記した左右のスティ
32,32の先端部を、支持スティ40の左右に垂下し
たブラケット43,43に係合した防振マウント部材4
6,46に係合する。又膨張室31の前部の下面に設け
たスティ32を、支持スティ40の前部から垂下したブ
ラケット44に同様に防振マウント材46を介して係合
する。
After the lower expansion chamber 31 and the upper muffler 35 are assembled in advance as described above, the expansion chamber 31 is
Face up. The anti-vibration mount member 4 in which the distal ends of the left and right stays 32, 32 on the lower surface of the expansion chamber 31 are engaged with brackets 43, 43 hanging right and left of the support stay 40, respectively.
6, 46 are engaged. Further, the stay 32 provided on the lower surface of the front part of the expansion chamber 31 is engaged with the bracket 44 hanging down from the front part of the support stay 40 via the vibration-proof mount material 46 in the same manner.

【0038】以上により膨張室31は、排気系支持ステ
ィ40に、ブラケット43,43,44を介して、防振
マウント材46…によりスティ42…で左右、前部で取
付、支持されることとなる。一方、下の膨張室31の排
気入口31aとエンジン21の排気口部21bとの間を
排気管47で接続し、上の消音器35の下方に屈曲、垂
下したテイルパイプ37の下端部は、前記したフロント
カウル28のこの側の底部に設けた開口28cに臨ま
せ、排気を下方に排出する。
As described above, the expansion chamber 31 is mounted and supported on the exhaust system support stay 40 via the brackets 43, 43, and 44 at the left and right and front portions by the stays 42 by the vibration isolating mount members 46. Become. On the other hand, a lower end of a tail pipe 37 which is connected between an exhaust inlet 31a of the lower expansion chamber 31 and an exhaust port 21b of the engine 21 by an exhaust pipe 47, and is bent and lowered below the upper silencer 35, The exhaust is discharged downward by facing an opening 28c provided at the bottom of this side of the front cowl 28 described above.

【0039】以上のように予めプリアッセンブリーした
膨張室31、消音器35は、上下の支持板36,33と
の結合、スティ38、34との結合で確実に結合され、
排気系30全体のフレームへの取付、支持は、支持ステ
ィ40を介して左右、前部の都合3ヵ所で防振マウント
材46…を介して係合して取付、支持されるので、消音
器35を含む膨張室31は、振動を吸収する構造とし
て、フレーム側に確実に取付、支持されることとなる。
The expansion chamber 31 and the muffler 35 pre-assembled as described above are securely connected to the upper and lower support plates 36 and 33 and to the stays 38 and 34.
The entire exhaust system 30 is mounted and supported on the frame via the support stays 40 at three locations on the left, right, front, and the front via a vibration-proof mounting material 46. The expansion chamber 31 including 35 is securely mounted and supported on the frame side as a structure for absorbing vibration.

【0040】そして、消音器35を含む膨張室31のフ
レーム側への取り付けは、膨張室31のスティ32…を
フレーム側の支持スティ40のブラケット43,43,
44に防振マウント材46…に差込むことで行え、取り
付けが簡易であり、膨張室31と消音器35とをアセン
ブリーすることから、排気系30の組付性は格段に容易
化する。
When the expansion chamber 31 including the muffler 35 is mounted on the frame side, the stays 32 of the expansion chamber 31 are attached to the brackets 43, 43, 43, 43 of the support stay 40 on the frame side.
44 can be inserted into the anti-vibration mount members 46..., The installation is simple, and the assembly of the expansion chamber 31 and the muffler 35 greatly facilitates the assembly of the exhaust system 30.

【0041】排気系のメンテナンス上も、膨張室31の
掛合を容易に外すことができ、膨張室31に対し消音器
35が一体的に組み付けられているので、双方を一緒に
外すことができ、メンテナンス上有利である。又、フレ
ームに対し、膨張室31、消音器35を個々に取り付け
る必要が無いことから、取付構造が簡素であり、又取付
部品の点数が少なくて済む。
In terms of maintenance of the exhaust system, the engagement of the expansion chamber 31 can be easily removed, and the muffler 35 is integrally attached to the expansion chamber 31, so that both can be removed together. This is advantageous for maintenance. Further, since there is no need to individually attach the expansion chamber 31 and the muffler 35 to the frame, the attachment structure is simple and the number of attachment parts is small.

【0042】以上において、図3、図4で示したよう
に、排気系30を構成する下位の膨張室31は、図3で
明らかなように先細り形状のフロントカウル28の下位
内に臨み、先細りのフロントカウル内の空間に、その前
部が臨むように配置する。一方、上の消音器35は、フ
ロントカウルの形状から下位の膨張室31の後上方に配
置されることとなり、下位の膨張室31の容量を大きく
確保することができる。従って、上の消音器との組み合
わせで、高い消音効果を得ることができる。
In the above description, as shown in FIGS. 3 and 4, the lower expansion chamber 31 constituting the exhaust system 30 faces the lower part of the tapered front cowl 28 as apparent from FIG. Of the front cowl so that the front of the cowl faces the front cowl. On the other hand, the upper silencer 35 is disposed above and behind the lower expansion chamber 31 due to the shape of the front cowl, and a large capacity of the lower expansion chamber 31 can be secured. Therefore, a high silencing effect can be obtained in combination with the above silencer.

【0043】又膨張室31は前方に弯曲した弧状であ
り、又消音器35も同様の弧状であり、弧の両側部は車
幅方向なので、夫々は充分に長く設定することができ、
管長を長く設定してエンジン排気の効果的な膨張作用、
消音作用を確保し、エンジン性能を向上させて高い消音
効果を得ることができる。
The expansion chamber 31 has an arc shape curved forward, and the silencer 35 has the same arc shape. Since both sides of the arc are in the vehicle width direction, each can be set sufficiently long.
By setting the pipe length longer, the effective expansion of the engine exhaust,
A high noise reduction effect can be obtained by securing the noise reduction effect and improving the engine performance.

【0044】又膨張室31、消音器35は、上下に配置
し、前方に弯曲するように操向軸を中心とした弧状に形
成されているので、夫々の車両後方側には凹部空間が大
きく採ることができ、従って、操舵機構として前方に揺
動するリンク機構を採用しても、操舵リンク機構を収容
し、これの揺動スペースを、これ等と干渉することなく
充分に確保することができる。
Further, since the expansion chamber 31 and the muffler 35 are arranged vertically and formed in an arc shape centering on the steering axis so as to bend forward, a large concave space is provided on the rear side of each vehicle. Therefore, even if a link mechanism that swings forward is adopted as the steering mechanism, the steering link mechanism can be accommodated, and a sufficient swing space can be secured without interfering with the link mechanism. it can.

【0045】[0045]

【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1は、前部に配置された操向部材を操向す
る操向軸の後方にエンジンを配置し、該操向軸の前方側
に、排気膨張室、及び消音器からなる排気系を配置し、
排気系を、前記操向軸を中心とする略円弧状に形成して
車体の左右方向に延びるように配設し、排気膨張室と消
音器とを互いに平面視で重なるように配置したので、ス
ノーモビルにおいて、排気膨張室と消音器とを、車体の
操向部位の前方に配置してスノーモビルの全長を短く抑
え、しかも消音器が側方に配置することが無いので、車
幅も抑えることができ、スノーモビルの小型化を図るこ
とができ、取り回し性に優れたスノーモビルを得ること
ができる。
According to the present invention, the following effects are exhibited by the above configuration. According to a first aspect of the present invention, an engine is disposed behind a steering shaft that steers a steering member disposed at a front portion, and an exhaust system including an exhaust expansion chamber and a muffler is provided in front of the steering shaft. Place,
Since the exhaust system is formed in a substantially arc shape with the steering axis as the center and is disposed so as to extend in the left-right direction of the vehicle body, the exhaust expansion chamber and the muffler are disposed so as to overlap each other in plan view. In snowmobiles, the exhaust expansion chamber and muffler are placed in front of the steering area of the vehicle body to keep the overall length of the snowmobile short, and the muffler is not placed on the side, so the vehicle width can be reduced. Thus, the size of the snowmobile can be reduced, and a snowmobile excellent in maneuverability can be obtained.

【0046】又本発明は、エンジンを一般的なレイアウ
トと同様に操向軸の後方に、排気系をエンジンから離し
て配置する好ましい一般的なレイアウトを採用すること
ができ、エンジン排気口が前方に位置するレイアウトか
ら、排気系をエンジン前方の操向軸前方に配置し、排気
を前方に排出することができ、排気系のレイアウトを無
理無く、排気の流れに沿った、排気効率上好ましい排気
系を得ることができる。
Further, the present invention can employ a preferable general layout in which the exhaust system is arranged at a position behind the steering shaft and away from the engine in the same manner as the general layout, and the engine exhaust port is located at the front. The exhaust system is located in front of the steering shaft in front of the engine, and exhaust can be exhausted forward. A system can be obtained.

【0047】しかも、以上をスノーモビルにおいて採用
される外観部材である前部のフロントカウル内に配置す
ることができるので、前部のフロントカウル内の空間を
利用して排気膨張室、消音器の設置が合理的に行え、排
気膨張室と消音器とが、前部、側方と分離しないので、
フロントカウルの長さが短くなり、従来のようにフロン
トカウル内に排気膨張室、後方側部に消音器を有する構
造と異なり、徒にロングノーズとなることなく、外観性
の点においても優れたスノーモビルが得られる。
Moreover, since the above can be arranged in the front cowl at the front, which is an external member used in a snowmobile, the exhaust expansion chamber and the muffler can be installed using the space inside the front cowl at the front. Can be performed rationally, and the exhaust expansion chamber and muffler do not separate from the front and sides,
The length of the front cowl is shorter, unlike the conventional structure that has an exhaust expansion chamber inside the front cowl and a muffler on the rear side, unlike a conventional snowmobile that does not have a long nose and is also excellent in appearance. Is obtained.

【0048】更に、下側に排気膨張室を、上側に消音器
をラップするして配置したので、エンジンの排気口に近
い排気膨張室に排気を導入し、上側の消音器に排気流を
導き、上側の消音器を通って排気を消音、排出するよう
にしたので、排気流の流れも合理的で、エンジン性能上
も好ましい排気系が得られる。
Furthermore, since the exhaust expansion chamber is disposed on the lower side and the muffler is wrapped on the upper side, exhaust gas is introduced into the exhaust expansion chamber near the exhaust port of the engine, and the exhaust gas is guided to the upper muffler. Since the exhaust gas is silenced and discharged through the upper silencer, the flow of the exhaust gas flow is reasonable, and a favorable exhaust system in terms of engine performance can be obtained.

【0049】請求項2は、スノーモビルの前部には先細
りのフロントカウルを備え、該フロントカウル内に排気
系を配置し、該排気系の排気膨張室を先端側の空間内に
配置し、該排気膨張室の後上方に消音器を配置したの
で、フロントカウル内の前方の突出する空間内に排気膨
張室を配置することができ、排気膨張室の容量を大きく
設定することができる。
According to a second aspect of the present invention, the snowmobile is provided with a tapered front cowl at a front portion thereof, an exhaust system is arranged in the front cowl, and an exhaust expansion chamber of the exhaust system is arranged in a space on the front end side. Since the muffler is arranged behind and above the exhaust expansion chamber, the exhaust expansion chamber can be arranged in a space that projects forward in the front cowl, and the capacity of the exhaust expansion chamber can be set large.

【0050】従って、排気膨張室の容量を大容量とする
ことができる結果、膨張室に必要な容量を充分に確保
し、且つ前記のように排気膨張室が弧状で左右方向に長
く設定でき、充分の排気管長が得られることと併せ、排
気膨張作用、消音効果上も優れた排気膨張室が得られ、
エンジン性能向上の点においても好ましい排気系を得る
ことができ、上側の消音器の配置と併せ、コンパクト
で、容量的にも、性能的も優れた排気系を得ることがで
きる。
Therefore, the capacity of the exhaust expansion chamber can be increased, so that the capacity required for the expansion chamber can be sufficiently secured, and the exhaust expansion chamber can be set to be arc-shaped and long in the left-right direction as described above. In addition to obtaining a sufficient exhaust pipe length, an exhaust expansion chamber that is excellent in exhaust expansion function and noise reduction effect is obtained,
A favorable exhaust system can be obtained also in terms of improving the engine performance, and in combination with the arrangement of the muffler on the upper side, a compact exhaust system excellent in capacity and performance can be obtained.

【0051】請求項3は、排気膨張室と消音器とを相互
に結合し、これ等を共通の支持部材でフレームに取付、
支持したので、排気膨張室、消音器を個々にフレーム側
に取付、支持する必要が無く、フレームへの取付、支持
構造が簡素化し、又フレームへの取付、支持部材は少な
くなり、組付部品の削減が図れる。
According to a third aspect of the present invention, the exhaust expansion chamber and the muffler are connected to each other, and these are attached to the frame with a common support member.
Since it is supported, there is no need to individually mount and support the exhaust expansion chamber and muffler on the frame side, simplifying the mounting and supporting structure to the frame, and reducing the number of mounting and supporting members to the frame. Can be reduced.

【0052】又上記により、排気膨張室と消音器とを結
合することから、双方を予め組み付けておいて排気系ア
ッセンブリーとすることができ、従って、双方を組み付
けておいて、フレーム側に共通の支持部材で取り付ける
ように組み付けることができ、製作ラインにおける排気
系の組み付けも容易化する。更に排気膨張室と消音器と
を上下に配設し、これ等相互を結合するので、これ等の
相互間は接近して一体化し、排気系の高さ寸法が小さく
なり、排気系のコンパクト化が図れ、フロントカウルの
上下方向寸法を小さくしても、高さ方向の小さい空間内
に排気膨張室、消音器からなる排気系を設置することが
でき、排気系を内装しつつデザイン、空力上優れたスノ
ーモビルのフロントカウルを得ることもできる。
In addition, since the exhaust expansion chamber and the muffler are connected as described above, both can be assembled in advance to form an exhaust system assembly. It can be mounted so as to be mounted by the support member, and the mounting of the exhaust system in the production line is also facilitated. Furthermore, since the exhaust expansion chamber and the muffler are arranged vertically and they are connected to each other, these parts are integrated close to each other, the height of the exhaust system is reduced, and the exhaust system is made more compact. Even if the vertical dimension of the front cowl is reduced, the exhaust system consisting of the exhaust expansion chamber and muffler can be installed in a small space in the height direction. You can also get an excellent snowmobile front cowl.

【0053】請求項4は、スノーモビルの操向機構はリ
ンク式操舵機構を備え、該操舵リンク機構を排気系の円
弧状の内側の空間に配置したので、操舵機構としてリン
ク式のものを採用しても、操向軸前方に突出するリンク
機構を、排気系の弧状後部空間内を利用して合理的に配
設することができる。特に、操舵リンク機構の操舵リン
クを前後方向に揺動するように構成しても、前記した弧
状空間により、リンクの前方に大きな空間を確保するこ
とができる結果、操舵リンク機構の円滑な作動を、これ
の前方に排気系を配置しつつ、確保することができる。
According to a fourth aspect of the present invention, the steering mechanism of the snowmobile includes a link-type steering mechanism, and the steering link mechanism is disposed in the arc-shaped inner space of the exhaust system. Therefore, a link-type steering mechanism is employed. Even so, the link mechanism protruding forward of the steering shaft can be rationally arranged by utilizing the arc-shaped rear space of the exhaust system. In particular, even when the steering link of the steering link mechanism is configured to swing back and forth, a large space can be secured in front of the link by the arc-shaped space described above, so that the smooth operation of the steering link mechanism can be ensured. The exhaust system can be secured while being arranged in front of the exhaust system.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の排気装置を採用したスノーモビル全体
の側面図で、フロントカウル等の外観カバーを想像線で
示した図
FIG. 1 is a side view of an entire snowmobile employing an exhaust device according to the present invention, in which an exterior cover such as a front cowl is shown by imaginary lines.

【図2】図1の平面図FIG. 2 is a plan view of FIG. 1;

【図3】排気系を含むスノーモビル前部の拡大側面図FIG. 3 is an enlarged side view of a front portion of a snowmobile including an exhaust system.

【図4】図3の平面図で説明の便宜上ハンドルを除いた
FIG. 4 is a plan view of FIG. 3 with a handle removed for convenience of explanation.

【図5】排気系の分解斜視図FIG. 5 is an exploded perspective view of an exhaust system.

【図6】膨張室の平面図FIG. 6 is a plan view of an expansion chamber.

【図7】消音器の縦断平面図FIG. 7 is a longitudinal plan view of the muffler.

【符号の説明】[Explanation of symbols]

1…スノーモビル、 2,3,4…フレーム、 17…
操舵リンク機構、 19…操向軸、 c…操向軸線、
28…フロントカウル、 30…排気系、 31…排気
膨張室、 35…消音器、 40…排気系をフレームに
支持する支持部材。
1 ... snowmobile, 2, 3, 4 ... frame, 17 ...
Steering link mechanism, 19: steering axis, c: steering axis,
28: front cowl, 30: exhaust system, 31: exhaust expansion chamber, 35: silencer, 40: support member for supporting the exhaust system to the frame.

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 前部に配置された操向部材を操向する操
向軸の後方にエンジンを配置し、該操向軸の前方側に、
排気膨張室、及び消音器からなる排気系を配置し、 前記排気系を、前記操向軸を中心とする略円弧状に形成
して車体の左右方向にわたって配設するとともに、 前記排気膨張室と消音器とを互いに平面視で重なるよう
に上下に配置した、 ことを特徴とするスノーモビルの排気装置。
1. An engine is disposed behind a steering shaft for steering a steering member disposed at a front portion, and an engine is disposed forward of the steering shaft.
An exhaust expansion chamber, and an exhaust system including a muffler are arranged, and the exhaust system is formed in a substantially arc shape around the steering shaft and disposed in the left-right direction of the vehicle body. An exhaust device for a snowmobile, wherein a silencer and a silencer are arranged vertically so as to overlap each other in a plan view.
【請求項2】 前スノーモビルの前部には先細りのフロ
ントカウルを備え、該フロントカウル内に前記排気系を
配置し、該排気系の排気膨張室を先端側の空間内に配置
し、該排気膨張室の後上方に消音器を配置したことを特
徴とする請求項1記載のスノーモビルの排気装置。
2. A front cowl having a tapered front cowl at a front portion of the front snowmobile, wherein the exhaust system is arranged in the front cowl, and an exhaust expansion chamber of the exhaust system is arranged in a space on the front end side. The exhaust device for a snowmobile according to claim 1, wherein a muffler is disposed above and behind the expansion chamber.
【請求項3】 前記排気膨張室と消音器とを相互に結合
し、これ等を共通の支持部材でフレームに取付、支持し
たことを特徴とする請求項1記載のスノーモビルの排気
装置。
3. The exhaust device for a snowmobile according to claim 1, wherein the exhaust expansion chamber and the muffler are connected to each other, and these are mounted and supported on a frame by a common support member.
【請求項4】 前記スノーモビルの操向機構はリンク式
操舵機構を備え、該操舵リンク機構を前記排気系の円弧
状の内側の空間に配置したことを特徴とする請求項1記
載のスノーモビルの排気装置。
4. The exhaust of a snowmobile according to claim 1, wherein the steering mechanism of the snowmobile includes a link-type steering mechanism, and the steering link mechanism is disposed in an arc-shaped inner space of the exhaust system. apparatus.
JP1578897A 1997-01-29 1997-01-29 Exhaust device of snowmobile Withdrawn JPH10212940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1578897A JPH10212940A (en) 1997-01-29 1997-01-29 Exhaust device of snowmobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1578897A JPH10212940A (en) 1997-01-29 1997-01-29 Exhaust device of snowmobile

Publications (1)

Publication Number Publication Date
JPH10212940A true JPH10212940A (en) 1998-08-11

Family

ID=11898585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1578897A Withdrawn JPH10212940A (en) 1997-01-29 1997-01-29 Exhaust device of snowmobile

Country Status (1)

Country Link
JP (1) JPH10212940A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7401816B2 (en) * 2004-03-11 2008-07-22 Honda Motor Co., Ltd. Snowmobile with improved fuel tank structure
US7478694B2 (en) * 2004-05-17 2009-01-20 Honda Motor Co., Ltd. Snowmobile
CN114872797A (en) * 2022-05-12 2022-08-09 中国重汽集团济南动力有限公司 All-wheel steering snow sweeper all-wheel drive chassis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7401816B2 (en) * 2004-03-11 2008-07-22 Honda Motor Co., Ltd. Snowmobile with improved fuel tank structure
US7478694B2 (en) * 2004-05-17 2009-01-20 Honda Motor Co., Ltd. Snowmobile
CN114872797A (en) * 2022-05-12 2022-08-09 中国重汽集团济南动力有限公司 All-wheel steering snow sweeper all-wheel drive chassis
CN114872797B (en) * 2022-05-12 2024-03-29 中国重汽集团济南特种车有限公司 All-wheel steering snow remover all-wheel drive chassis

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