丄361776 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種跨坐型車輛，其包含一提供於—引擎 與一消音器中間之排氣系統。 【先前技術】 通常，對於為跨坐型車輛（諸如機車）所提供的排氣系統 來說，已有廣泛使用的結構，在各結構中一膨脹室（即一 所謂的排氣室）係提供於一引擎及一消音器中間。作為一 種將包含該排氣室之該排氣系統安裝至該跨坐型車輛的方 法，熟知的係一種將該排氣室配置於該引擎及該後輪之間 的方法（例如見專利文件1)。 此外，該排氣室係由一車體框架所支撐。更具體而言， 提供於該排氣室之兩個橫向部分中的托架係固定至一車體 框架。 [專利文件1]曰本未審查專利公開案第2〇〇7 8442號（第6 頁，圖1及圖9) 【發明内容】 般而5 ’諸如該排氣系統及該車體框架之元件係藉由 焊接而予以製造，因此與藉由鑄造或類似方式製造的模製 產扣之最大公差相比，其最大公差易於變大。此外，在一 排乳系統包含—膨脹室（排氣室）的情況下，該膨脹室須藉 由該車體框架予以支撑，以確保在該排氣系統安裝至該跨 坐型車輛之狀態中該排氣系統的剛性。 就該膨脹室係藉由該車體框架予以支撐的情況而言，會 135989-1001230.doc 1361776 產生用於將該排氣系統安裝至該車體框架的安裝位置未被 固定的問題，因此，（舉例來說）該跨坐型車輛之外在品質 會下降或易於產生異常聲音。 本發明係有鑒於上述情況而產生，且本發明之一目 提供一種跨坐型車輛，其中在提供一排氣系統之情況下 該排氣系統之一安裝精度係予以改善，同時該排氣系統及 車體框架之最大公差會被吸收。 為解決上述該等問題，本發明具有一描述於下之特徵。 首先，根據本發明之一第一特徵，一種跨坐型車輛包含一 車體框架；-引擎，其產生-驅動力以驅動-輪子；排氣 系統’其包含-膨脹室，經由—連接至該引擎之排氣管排 出的廢氣在該膨脹室中膨脹；一第一支撐機構，包含一第 -突出部；及一第二支撐機構，包含一第二突出部。該膨 脹室係提供於該引擎及—將廢氣排出至外侧的消音器中 間’並藉由該第-支撐機構及該第二支撐機構支撐於該車 體框架上；該第-支撐機構支撐該膨脹室使其不能移動. 該第二突出部係插人-所提供的插人部中，其中該Z支 撐機構支撐該膨脹室以使盆 入 部之一古—教心 '收八咏個 突一出方向與該第 供提供一種跨坐型〜中在提 排氣系統及該車體框：孔系統的情況下’可忍受(例如)該 車體框架的最大公差，且同時該排氣系統之 J主夕在將該排軋系統裝配至 =坐型車輛的裝配過程中沿著該第二突出部插入該插 135989-l〇〇i23〇.doc 女裝精度係予以改善。 【實施方式】 本發明之一跨坐型車輛的一 以h· * Μ 輛的實轭例將參考該等圖式而予 以描述。更具體而言， τ ㈣, 以田述係關於⑴跨坐型4輛之總體 ^ , 稱(3)排軋系統之安裝狀態、 乳虹之構造、（5)操作及效果/優點及⑷其他實施^ 八在：等圖式中’力同或相似的數字指示相同或相似的部 刀。然而，該等圖式為撫亜同斗' 飞為概要圖式，因此應理解的是（例如 各尺寸比率與真實的尺寸比率係不同的。 一因此，實際的尺寸(例如)應參考如下之描述而予以決 田…、在該等圖式中亦包含（例如）彼此的尺寸關係 比率不同的部分。 (1)跨坐型車輛之總體結構 圖1為一機車10之一左側視圖，其為本實施例之跨坐型 車輛的-具體實例。圖2為該機車1〇在包含（例如）一車體蓋 (未顯示）的元件被移除之狀態下的右側視圖。 如圖1及圖2所示，該機車10包含一前輪20及一後輪90。 該機車10藉由使用一驅動力而驅動該後輪9〇,豸驅動力係 藉由一引擎40而產生。 該引擎40為一種單汽缸四衝程型引擎。同時，該引擎40 為一乳冷、一低排量型引擎。該引擎40係安裝至一形成該 機車10之—架構的車體框架30。 一用於在—大體垂直於一路面的方向上支撐該機車10的 中心支架50係安裝至該車體框架30。 135989-1001230.doc 此外，一排氣系統100係連接至該引擎40。更且體而 舌’一排氣管m係連接至該引擎4。之—汽缸頭4()a之一右 側部分40b。 該排氣系統_係藉由焊接而整體形成。該排氣系統ι〇〇 ，含該排氣管110、一排氣室12〇及一消音器19〇。該排氣 室120連接至該排氣管110 °該消音H19G連接至該排氣室 更/、體而。，該排氣室丨2〇係提供於該引擎及該消 音器190中間。 在該排氣室m中，從該引擎40經由該排氣管11〇排出的 廢氣膨脹。該排氣室120具有一箱形形狀。根據本實施 例’該排氣室120形成一膨脹室。 該消音器190係位於該排氣系統1〇〇之一後端部分中。該 消音器190係配置於該機車1〇之一右側部分1〇Ra中或更 具體而言，係配置於該後輪9〇的右邊。廢氣是從一排氣口 190a排出。該消音器19〇是藉由一從該車體框架3〇延伸的 樓條33予以支樓。 該排氣室120及該消音器19〇減少由該引擎4〇產生的排氣 噪音。在本實施例中，由於提供該排氣室12〇，所以相對 於未提供該排氣室120的情況，該消音器19〇之尺寸係予以 減小。更具體而言，相對於未提供該排氣室12〇的情況， 該排氣系統100之總長度係予以減少。 (2)排氣系統之結構 。玄排氣糸統10 0之結構將在下文中予以描述。更具體而 言，該排氣系統100之總體結構及該排氣室120(膨脹室）之 135989-1001230.doc I361776 結構將在下文中予以描述。 (2.1) 總體結構 圖3為該排氣系統100之一總體透視圖。如圖3所示，該 排氣系統100包含一排氣管110、該排氣室120、一迴流管 180及該消音器190。 該排氣管110是藉由彎曲一圓形剖面的管子而形成。該 排氣管110係連接至一汽缸頭40a。更具體而言，該排氣管 110包含一連接部115，其用於連接至該汽缸頭4〇a之一右 側部分40b。 該排氣室120連接至該排氣管11〇〇 —托架121係提供於 該排氣室12 0之一左側部分12 0 L b中。此外，一托架13 1係 提供於該排氣室120之一右側部分120Rb*。一用於支樓一 護環132的護環支撐部131a係形成於該托架丨31中。 該連接管部1 80連接至該排氣室120之一後端部12〇a。該 連接管部180係用於從該排氣室120排出之廢氣的迴流。 該消音器190連接至該排氣室120。該排氣口 i9〇a係形成 於該消音器190中’而該消音器19〇將流經該排氣管11〇、 該排氣室120及該迴流管180排氣口的廢氣排放到外側。該 消音器190為圓筒形且係沿著該機車1〇之縱向而配置。一 保護器19 1係提供於該消音器19〇之外側。 該撐條33(見圖3)所連接至的一安裝枝架192係提供至該 消音器190。更具體而言，該消音器！9〇係固定至該車體框 架30。 (2.2) 膨脹室之結構 135989-1001230.doc •9· 圖4為架構本實施例之該膨脹室的該排氣室12〇及該迴流 管180之一平面圖。圖5為該排氣室ι2〇及該迴流管180之一 右側視圖。 如圖4及圖5所示，一用於淨化從該引擎40排出之廢氣 (見圖1及圖2)的催化器hi係配置於該箱形排氣室120中。 該催化器111係連接至該排氣管110。流經該排氣管110内 部的廢氣係引導至該催化器ln。一連接部U2連接至該催 化器111。該連接部U2進一步連接至該迴流管18〇。 從該連接部112排放至該迴流管180中的廢氣是從一突出 部181排放至該排氣室12〇中。更具體而言，從該突出部 181排出之廢氣是在該排氣室12〇中膨脹。 一允許一螺栓123(未顯示於圖4及圖5中，見圖6)螺接至 其中的螺母部12la係形成在該左側部分l20Lb中所提供的 該托架121上。此外，該護環支撐部1313係形成在該右側 部分120Rb中所提供的該托架131上。 (3)排氣系統之安裝狀態 該排氣系統100之安裝狀態將在下文中予以描述。更具 體而言’該排氣室12〇之該左側部分i2〇Lb之一安裝狀態及 該排氣室120之該右側部分i2〇Rb之一安裝狀態將在下文中 予以描述。 (3.1)左側部分12〇1^ 圖6為該排氣室120之該左側部分120Lb及該左侧部分 120Lb之一周圍部分的透視圖。更具體而言，圖6為從—左 後方斜向地觀察時該排氣室12〇之一周圍部分的透視圖。 135989-1001230.doc -10- 如圖6所示，一框架托架31係連接至該車體框架3〇。在 本實施例中，該框架托架31配置該車體框架3〇之一部分。 該框架托架31可樞轉地支撐該中心支架50。該排氣管110 在該車寬方向上配置於該中心支架5〇之内側。 一輪榖31a係形成於該框架托架31上。一允許該螺栓123 插入的插入孔（未顯示）係形成於該輪榖31&中。 該螺栓123係插入該輪榖3ia中以便被螺合至形成於該托 架121中的該螺母部121a(見圖4)中。在本實施例中該螺 栓123配置一第一突出部。此外，在本實施例中，一用於 經由該車體框架3〇(框架托架31)支撐該排氣室12〇的第一支 撐機構係藉由該托架12ι及該螺栓123予以配置。該第一支 樓機構支樓左側部分及右側部分中的一者，或更具體而 言，支撐該左側部分120Lb。 該托架121及該螺栓123支撐該排氣室12〇之該左側部分 12〇Lb°更具體而言’該托架121及該螺栓123支撐該排氣 室120使其不可移動。 (3.2)右側部分12〇1^) 圖7為該排氣室120之該右側部分120Rb及該右側部分 120Rb之一周圍部分的透視圖。更具體而言，圖7為從一右 前方斜向地觀察時該排氣室120之一周圍部分的透視圖。 圖8為沿著圖5中顯示之線F8-F8所做的該托架13 1之剖面 圖。 圖9為該排氣室120之該右側部分i2〇Rb及該右側部分 120Rb之一周圍部分的側視圖。 135989-1001230.doc 丄則776 如圖7到圖9所示，一框架托架32係連接至該車體框架 3〇。在本實施例中，該框架托架32配置該車體框架3〇之一 。户刀。在其中形成有一插入孔32b的室支撐部32a係提供於 該框架托架32中（見圖9)。 一螺栓133及一套環140係插入該插入孔32b中。在本實 施例中，該螺栓！33形成一第二突出部。此外，該套環14〇 形成圓筒。在本貫施例中，該第二突出部包含該套環 140並具有一圓柱形形狀。 該螺栓133係插入該套環14〇中。更具體而言，該螺栓 133係螺合至該套環140。 該螺栓133及該套環14〇係插入於被提供至該排氣室12〇 的該護環丨32中。該托架131在該車寬方向上係提供於比該 迴流管180更罪外之處。該螺栓133及該套環14〇係插入於 «玄濩％132中，该護環132係藉由在該托架131上形成之該 護環支撐部131a予以支撐。該護環132係由一種彈性構件 (橡膠）形成。 根據本實施例’經由該車體框架％支撐該排氣室】的 該第二支撑機構係、藉由該托架131、該螺栓133及該套環 140所配置。此外’在本實施例中，肖護環η:形成一插入 部。 如上所述，6亥第一支撐機構（該托架121及該螺栓123)支 撐該室之左側部分及右側部分中的一者，《更具體而言， 支撐該左側。P分12〇Lb。該第二支撐機構支撐該排氣室12〇 的另4固側°P分’或更具體而言，支撐該右侧部分 135989-1001230.doc 1361776 120Rb。因此，該第 突出方向與該第一突 二突出部（該螺栓133及該套環14〇)之丄361776 IX. Description of the Invention: [Technical Field] The present invention relates to a straddle type vehicle including an exhaust system provided between an engine and a muffler. [Prior Art] In general, for an exhaust system provided for a straddle type vehicle such as a locomotive, a widely used structure in which an expansion chamber (i.e., a so-called exhaust chamber) is provided is provided. In the middle of an engine and a silencer. As a method of mounting the exhaust system including the exhaust chamber to the straddle type vehicle, a method of arranging the exhaust chamber between the engine and the rear wheel is known (for example, see Patent Document 1) ). In addition, the exhaust chamber is supported by a body frame. More specifically, the brackets provided in the two lateral portions of the discharge chamber are fixed to a body frame. [Patent Document 1] Unexamined Patent Publication No. 2-7 442 (page 6, FIG. 1 and FIG. 9) [Summary of the Invention] 5' such as the exhaust system and components of the vehicle body frame It is manufactured by welding, so that the maximum tolerance is apt to become larger than the maximum tolerance of the molded product produced by casting or the like. Further, in the case where a row of milk systems includes an expansion chamber (exhaust chamber), the expansion chamber is supported by the vehicle body frame to ensure that the exhaust system is installed in the state of the straddle type vehicle. The rigidity of the exhaust system. In the case where the expansion chamber is supported by the vehicle body frame, 135989-1001230.doc 1361776 creates a problem that the installation position for mounting the exhaust system to the vehicle body frame is not fixed, therefore, (For example) the quality of the straddle type vehicle may be degraded or an abnormal sound may be generated. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a straddle type vehicle in which an installation accuracy of one of the exhaust systems is improved while providing an exhaust system, and the exhaust system and The maximum tolerance of the body frame is absorbed. In order to solve the above problems, the present invention has a feature described below. First, according to a first feature of the present invention, a straddle type vehicle includes a body frame; an engine that generates a driving force to drive a wheel; and an exhaust system that includes an expansion chamber connected to the The exhaust gas discharged from the exhaust pipe of the engine expands in the expansion chamber; a first support mechanism includes a first protrusion; and a second support mechanism includes a second protrusion. The expansion chamber is provided in the middle of the engine and the muffler that discharges the exhaust gas to the outside and is supported on the vehicle body frame by the first support mechanism and the second support mechanism; the first support mechanism supports the expansion The chamber is such that it cannot be moved. The second protruding portion is inserted into the insertion portion provided by the Z-supporting mechanism, wherein the Z-supporting mechanism supports the expansion chamber so that one of the basin-introducing portions The direction and the provision provide a straddle type to the middle of the exhaust system and the body frame: hole system in the case of 'tolerable (for example) the maximum tolerance of the body frame, and at the same time the exhaust system J In the assembly process of assembling the rolling system to the seated vehicle, the insert 135989-l〇〇i23〇.doc is improved along the second protrusion. [Embodiment] A yoke example of a h·* 辆 vehicle of a straddle type vehicle of the present invention will be described with reference to the drawings. More specifically, τ (4), based on the total system of (1) straddle type 4, said (3) installation state of the rolling system, construction of the milk rainbow, (5) operation and effect / advantages and (4) other Implementation ^ 八在: In the drawings, 'the same or similar numbers indicate the same or similar knives. However, the drawings are for the same drawing, so it should be understood (for example, the ratio of each size is different from the actual size ratio. Therefore, the actual size (for example) should refer to the following The description also refers to the field... and also includes, for example, portions having different dimensional relationship ratios from each other. (1) Overall structure of the straddle type vehicle FIG. 1 is a left side view of a locomotive 10, which is A specific example of the straddle type vehicle of the present embodiment. Fig. 2 is a right side view of the locomotive 1 in a state including, for example, a component of a body cover (not shown) being removed. As shown in Fig. 2, the locomotive 10 includes a front wheel 20 and a rear wheel 90. The locomotive 10 drives the rear wheel 9 by using a driving force generated by an engine 40. The engine 40 is A single-cylinder four-stroke engine. At the same time, the engine 40 is a milk-cooled, low-displacement engine. The engine 40 is mounted to a frame body 30 that forms the structure of the locomotive 10. Supporting the center branch of the locomotive 10 generally perpendicular to a road surface The 50 series is mounted to the body frame 30. 135989-1001230.doc In addition, an exhaust system 100 is coupled to the engine 40. More specifically, the tongue 'an exhaust pipe m is connected to the engine 4. The right portion 40b of one of the heads 4 () a. The exhaust system is integrally formed by welding. The exhaust system includes an exhaust pipe 110, an exhaust chamber 12, and a muffler 19 The exhaust chamber 120 is connected to the exhaust pipe 110. The muffler H19G is connected to the exhaust chamber, and the exhaust chamber is provided between the engine and the muffler 190. In the exhaust chamber m, the exhaust gas discharged from the engine 40 via the exhaust pipe 11 is expanded. The exhaust chamber 120 has a box shape. According to the present embodiment, the exhaust chamber 120 forms an expansion chamber. The muffler 190 is located in a rear end portion of the exhaust system 1 . The muffler 190 is disposed in one of the right side portions 1 Ra of the locomotive 1 或更 or, more specifically, is disposed thereafter. The right side of the wheel 9 is exhausted from the exhaust port 190a. The muffler 19 is by a strip 33 extending from the body frame 3 The exhaust chamber 120 and the muffler 19 are configured to reduce exhaust noise generated by the engine 4. In the present embodiment, since the exhaust chamber 12 is provided, the exhaust is not provided. In the case of the chamber 120, the size of the muffler 19 is reduced. More specifically, the total length of the exhaust system 100 is reduced relative to the case where the exhaust chamber 12 is not provided. The structure of the exhaust system will be described below. More specifically, the overall structure of the exhaust system 100 and the exhaust chamber 120 (expansion chamber) 135989-1001230.doc The structure of I361776 will be described below. (2.1) Overall Structure FIG. 3 is an overall perspective view of one of the exhaust systems 100. As shown in FIG. 3, the exhaust system 100 includes an exhaust pipe 110, the exhaust chamber 120, a return pipe 180, and the muffler 190. The exhaust pipe 110 is formed by bending a tube having a circular cross section. The exhaust pipe 110 is connected to a cylinder head 40a. More specifically, the exhaust pipe 110 includes a connecting portion 115 for connection to one of the right side portions 40b of the cylinder head 4A. The exhaust chamber 120 is connected to the exhaust pipe 11 - a bracket 121 is provided in one of the left portion 12 0 L b of the exhaust chamber 120. Further, a bracket 13 1 is provided to one of the right side portions 120Rb* of the exhaust chamber 120. A grommet support portion 131a for the branch-guard ring 132 is formed in the bracket 丨 31. The connecting pipe portion 180 is connected to one of the rear end portions 12A of the exhaust chamber 120. The connecting pipe portion 180 is for returning the exhaust gas discharged from the exhaust chamber 120. The muffler 190 is connected to the exhaust chamber 120. The exhaust port i9〇a is formed in the muffler 190', and the muffler 19〇 discharges the exhaust gas flowing through the exhaust pipe 11〇, the exhaust chamber 120, and the exhaust port of the return pipe 180 to the outside. . The muffler 190 has a cylindrical shape and is disposed along the longitudinal direction of the locomotive. A protector 19 1 is provided on the outer side of the muffler 19 . A mounting bracket 192 to which the stay 33 (see Fig. 3) is attached is provided to the muffler 190. More specifically, the silencer! The 9-inch system is fixed to the vehicle body frame 30. (2.2) Structure of the expansion chamber 135989-1001230.doc • Fig. 4 is a plan view showing the discharge chamber 12A of the expansion chamber of the embodiment and the return pipe 180. Fig. 5 is a right side view of the exhaust chamber ι2 and one of the return pipes 180. As shown in Figs. 4 and 5, a catalyst unit hi for purifying exhaust gas discharged from the engine 40 (see Figs. 1 and 2) is disposed in the box-shaped exhaust chamber 120. The catalyst 111 is connected to the exhaust pipe 110. The exhaust gas flowing through the inside of the exhaust pipe 110 is guided to the catalyst ln. A connection portion U2 is connected to the catalyst 111. The connecting portion U2 is further connected to the return pipe 18A. The exhaust gas discharged from the connecting portion 112 into the return pipe 180 is discharged from a protruding portion 181 into the exhaust chamber 12A. More specifically, the exhaust gas discharged from the protruding portion 181 is expanded in the exhaust chamber 12A. A nut portion 12la to which a bolt 123 (not shown in Figs. 4 and 5, see Fig. 6) is screwed is formed on the bracket 121 provided in the left side portion l20Lb. Further, the grommet support portion 1313 is formed on the bracket 131 provided in the right side portion 120Rb. (3) Installation state of the exhaust system The installation state of the exhaust system 100 will be described below. More specifically, the mounting state of the left side portion i2〇Lb of the exhaust chamber 12〇 and the mounting state of the right side portion i2〇Rb of the exhaust chamber 120 will be described later. (3.1) Left side portion 12〇1^ Fig. 6 is a perspective view of the left side portion 120Lb of the exhaust chamber 120 and a portion around the left side portion 120Lb. More specifically, Fig. 6 is a perspective view of a portion around the exhaust chamber 12〇 as viewed obliquely from the left rear. 135989-1001230.doc -10- As shown in Fig. 6, a frame bracket 31 is attached to the body frame 3〇. In the present embodiment, the frame bracket 31 is provided with a portion of the body frame 3〇. The frame bracket 31 pivotally supports the center bracket 50. The exhaust pipe 110 is disposed inside the center bracket 5〇 in the vehicle width direction. A rim 31a is formed on the frame bracket 31. An insertion hole (not shown) allowing the insertion of the bolt 123 is formed in the rim 31 & The bolt 123 is inserted into the rim 3ia so as to be screwed into the nut portion 121a (see Fig. 4) formed in the bracket 121. In the present embodiment, the bolt 123 is provided with a first projection. Further, in the present embodiment, a first supporting mechanism for supporting the discharge chamber 12A via the vehicle body frame 3 (frame bracket 31) is disposed by the bracket 121 and the bolt 123. One of the left side portion and the right side portion of the first branch office building, or more specifically, the left side portion 120Lb. The bracket 121 and the bolt 123 support the left side portion 12〇Lb of the exhaust chamber 12〇. More specifically, the bracket 121 and the bolt 123 support the exhaust chamber 120 so as not to move. (3.2) Right side portion 12〇1^) Fig. 7 is a perspective view of a portion around the right side portion 120Rb of the exhaust chamber 120 and the right side portion 120Rb. More specifically, Fig. 7 is a perspective view of a portion around the exhaust chamber 120 as viewed obliquely from a right front side. Figure 8 is a cross-sectional view of the carriage 13 1 taken along line F8-F8 shown in Figure 5. Fig. 9 is a side view of the portion around the right side portion i2 〇 Rb of the exhaust chamber 120 and the right side portion 120Rb. 135989-1001230.doc 776 776 As shown in FIGS. 7 to 9, a frame bracket 32 is coupled to the body frame 3〇. In the present embodiment, the frame bracket 32 is provided with one of the body frames 3''. Household knives. A chamber supporting portion 32a in which an insertion hole 32b is formed is provided in the frame bracket 32 (see Fig. 9). A bolt 133 and a set of rings 140 are inserted into the insertion hole 32b. In this embodiment, the bolt! 33 forms a second protrusion. Further, the collar 14 turns into a cylinder. In the present embodiment, the second projection includes the collar 140 and has a cylindrical shape. The bolt 133 is inserted into the collar 14〇. More specifically, the bolt 133 is screwed to the collar 140. The bolt 133 and the collar 14 are inserted into the grommet 32 provided to the exhaust chamber 12A. The bracket 131 is provided in the vehicle width direction at a more sinister position than the return pipe 180. The bolt 133 and the collar 14 are inserted into a «Xuanyu%132, which is supported by the guard ring support portion 131a formed on the bracket 131. The grommet 132 is formed of an elastic member (rubber). The second supporting mechanism that supports the exhaust chamber via the vehicle body frame % according to the present embodiment is disposed by the bracket 131, the bolt 133, and the collar 140. Further, in the present embodiment, the guard ring η: forms an insertion portion. As described above, the 6-well first support mechanism (the bracket 121 and the bolt 123) supports one of the left side portion and the right side portion of the chamber, "more specifically, the left side is supported. P is 12 〇 Lb. The second support mechanism supports the other 4 sides of the exhaust chamber 12A or more specifically supports the right portion 135989-1001230.doc 1361776 120Rb. Therefore, the first protruding direction and the first protruding protrusion (the bolt 133 and the collar 14〇)
检133及該室支撐部32a之間。一 體而言’如圖8所示，該護 〕° 一墊圈134係插入於該螺 一間隙G係提供於該套環丨4〇 及該護環132之間。 在本實施例中，即使在該排氣系統1〇〇裝配於該機車1〇 之後，該排氣室120係予以支撐以可在沿著該螺栓133及該 套環140插入至該護環132的方向上移動。 此外，如圖8所示，一朝該框架托架32之該室支撐部32a 犬出以與該室支撐部32a卡合的旋轉止擋件i 43係形成於該 套環140中》在本實施例中，該旋轉止擋件143形成一卡合 突出部。 在本實施例中’該排氣系統1 〇〇係從該機車丨〇之一下部 裝配至該車體框架30。當該排氣系統100裝配至該車體框 架3〇時’其處於只有該套環140係插入該護環132中的狀 態。在該排氣系統1 〇〇已裝配至該車體框架3〇之後，或更 具體而言當該托架131在該車寬方向上比該框架托架32之 該室支撐部32a更靠内侧而定位之後，該螺栓133係螺合至 該套環140之一内螺紋部141a中（見圖9及圖1〇)。 該旋轉止擋件143係定位在比該室支撐部32a更靠下方， 135989-1001230.doc -13- 1361776 以在從該機車10之下部將該排氣系統1〇〇裝配至該車體框 架30的過程中防止與該室支撐部32a干涉。更具體而言， 該旋轉止擋件143係定位在相對於將該排氣系統ι〇〇裝配至 該機車10之一裝配方向（向上方向）的相反方向上（向下方 向）。 如圖9所示，該插入孔32b係形成於該框架托架32之該室 支撐部32a中。該螺栓133經由該插入孔32b螺合至該套環 140之該内螺紋部1413中。此外，該螺栓133及該套環14〇 經由該插入孔32b插入該護環132中。 在本實施例中’該插入孔32b之一沿著該機車1〇之縱向 的長度L1係大於該插入孔3213之一沿著該機車1〇之垂直方 向的高度H1。更具體而言’該插入孔321)為一沿著該機車 10之縱向延伸的長孔。 (4)圓筒之構造 圖10為包含該套環140之該第二支撐機構的分解透視 圖’該套環140形成本實施例中之一圓筒。 如圖10所示，該套環14〇包含一本體部〗41、一凸環部 142及該旋轉止擋件143。該内螺紋部141&係形成於該本體 141中，且該螺栓133係插入其中。該凸環部丨42與該本 體部141係連續的，其外徑大於該本體部14】之外徑。 該旋轉止擋件143係形成於該凸環部142之一外邊緣M2a 的一部分。該旋轉止擋件143朝該室支撐部32a突出，即在 該車寬方向上朝外突出。該旋轉止擋件143與該室支撐部 32a之一下邊緣部32c接觸。由於該旋轉止擋件ι43係如此 135989-1001230.doc •14- 1361776 與該下邊緣部32c接觸，因此在該排氣系統100裝配至該車 體框架30之後即使當該螺栓133被螺合至該内螺紋部l4u 時’可防止該套環140與該螺栓133—同旋轉。 (5)操作及效果/優點 本實施例之一跨坐型車輛（機車10)包含一車體框架（車體 框架30); —引擎（引擎4〇) ’其產生一用於驅動一輪子（後 輪9〇)之驅動力；及一排氣系統（排氣系統1〇〇)，其包含— 將經由一連接至該引擎之排氣管（排氣管11〇)排出的廢氣膨 脹之膨脹室（排氣室120)。該跨坐型車輛（機車1〇)包含一第 一支撐機構（托架121及螺栓123)，該第一支撐機構包含一 第-突出部（螺栓123)，及一第二支撐機構（托架131、螺检 及套環14G) ’該第二支樓機構包含-第二突出部（螺栓 ⑶）。該膨脹室係提供於則擎及—將廢㈣出至外部的 :音器(消音器19〇)中間，且藉由該第一支樓機構及該第二 支撐機構支撐於該車體框架上。 脹室使其不可移動。該第二…支沒機構支撐該膨 一大出〇P係插入一提供至該車體 ，該膨脹室的插入部(護環132及套環14〇)中。該第二 支撐機構支撐該膨腸室& 嗲跨㈣自η 少在將㈣Μ統裳配至 及跨坐型車輛時沿著 向上移動。該第二突上===…的-方 第-突出部之-突出方向不同/方向的特徵在於其與該 根據該機車10,該第二 套環⑽)支擇該排氣室12。支了托架131、螺栓⑽ -裝配至該跨坐型車㈣至少在將該排氣系統 時~者將該第二突出部（螺栓133 135989-1001230.doc •15· 1361776 及套環140)插入該護環132中的方向上移動。該第二突出 部之突出方向與該第一突出部（螺栓123)之突出方向不同。 因此，利用該第一突出部及該第二突出部，該排氣室 120可穩固地予以支撐，且同時，諸如該排氣系統1〇〇及該 車體框架30之構件的最大公差，或更具體而言，其在該車 寬方向中的最大公差可被更穩固地承受。更具體而言，根 據該機車1〇，該排氣系統100之安裝精度可予以改盖。 尤其係在本實施例中，由於該排氣系統100藉由焊接而 整體形成’因此該等最大公差必須被容忍。 本實施例之該跨坐型車輛（機車10)其額外特徵在於該插 入部係提供於該膨脹室中，—用於供該第二突出部插入的 插入孔（插入孔32b)係形成於該車體框架中，且該第二突出 經由該插入孔插入該插入部中。 一本實施例之該跨生型車輛（機車1〇)之另一特徵在於該第 一大出部為圓筒形。 如上述’該第二突出部經由該插入孔32b而插入被提供 於該排氣室120之侧面上的該護環。此外，該第二突 出部為圓柱形。因此，與例如該第二突出部係形成於該: :框架30之側面上的情況或與該第二突出部不是圓柱形的 月况相比’該排氣系統1〇〇之安裝精度可被改善，同時， 該排氣系統⑽可容易地裝配至該車體框架。 _ ^實施例之該跨坐型車輛（機㈣)之額外特徵在於該第 圓芮it :包3 一使該第二突出部插入的圓筒(套環4〇)且該 圓缚係插入於該插入部中。 135989-10〇l23〇.d〇c 1361776 更具體而言，該第二突出部係藉由該螺栓133及該套環 140而配置，其中該螺栓133及該套環140係插入於該護環 132中《因此，該第二突出部可藉由使用一普通形狀的螺 栓133及套環140而容易地予以形成。 此外，本實施例之該跨坐型車輛（機車10)的另外特徵在 於該插入部係由一種彈性構件形成，並包含護環132，該 護環132係藉由提供於該膨脹室中之該第二支撐機構予以 支撐。 如此’該護環132係由彈性構件（橡膠）形成。因此，異 常聲音、震動等可被防止發生於支擇該排氣室12〇的部位 中。 本實施例之該跨坐型車輛（機車1〇)之進一步特徵在於該 第一支撐機構支撐該膨脹室之左側部分及右側部分中的一 者（左側部分120Lb)，且該第二支撐機構支撐該膨脹室之 該等側部分中的另一者（右側部分1 2〇Rb)。 更具體而言，該第一支撐機構(托架121及螺栓123)支撐 该排氣室120之該左側部分丨2〇Lb，且該第二支撐機構（托 架131、螺栓133及套環140)支撐該排氣室12〇之該右側部 分120Rb。因此’該排氣系統1 〇〇之安裝精度可予以改善， 且同時該排氣室120可穩固地予以支推。 本實施例之該跨坐型車輛（機車丨〇)之額外特徵在於該圓 南包含一使該第二突出部可插入之本體部（本體部141)，及 一外徑大於該本體部的凸環部（凸環部丨42)，其中該凸環部 與該車體框架接觸》 135989-1001230.doc •17- U01776 藉此，該套環MO包含—凸環部142，其中該凸環部M2 係與該框架托架32之該室支樓部仏接觸。因此，該套環 142與該框架托架32接觸部分的強度可予以改進。 本實施例之該跨坐型車輛（機車1〇)之再-特徵在於-朝 該車體框架突出且與該車體框架卡合的卡合突出部（旋轉 止擒件143)係形成於該凸環部之—外邊緣（外邊緣“⑷的 一部分中。 本實施例之該跨坐型車輛（機車1〇)之另一特徵在於該卡 合犬出部係定位在相對於該排氣系統被安裝至該跨坐型車 輛之-裝配方向（向上方向）的一相反侧上（向下方向）。 該旋轉止擒件U3係因此形成於該凸環部M2之該外邊緣 ^上。更具體而言’該旋轉止擋件143係形成於該凸環 P142之下部中^因此，在從該機車丨〇之下部將該排氣 系統100裝配至該車體框架3㈣，可防止該旋轉止撞件⑷ 干擾該室支撐部32a。 本實施例之該跨坐型車輛（機車1〇)之再一特徵在於沿著 該跨坐型車輛之縱向形成的該插入孔之長度（長度叫係大 於沿者該機車之該垂直方向的該插入孔之-高度H1。因 舉例而。除了该排氣系統100及該車體框架3〇在該 車寬方向上的最大公差之外，其在該機車1〇之縱向上的最 大公差亦可被容忍。 本實轭例之忒跨坐型車輛（機車1〇)之另外特徵在於該第 一支撐機構支撐該膨脹室之一左侧部分，且該消音器係配 置於該跨坐型車輛之—右側部分且係固定至該車體框架。 135989-1001230.doc 1361776 本實施例之該跨坐型車輛（機車10)之進一步特徵在於該 弟支揮機構支擇該膨脹室之該左側部分，且該排氣管係 連接至該引擎之一右側部分。 如上述，由於該排氣系統100係從左側及右側予以固 疋’因此該排氣系統100之安裝強度可予以改善。 (6)其他實施例 如上述，雖然本發明係經由本發明之一實施例而予以描 述，其不應被理解為部分構成上述揭示内容的該等描述及 該等圖式限制本發明。從該揭示内容中，各種其他均等物 或替代實施例對於熟悉該項技術者而言係顯而易見的。 舉例來說，在上述實施例中，雖然該第二突出部係藉由 該螺栓133及該套環140予以配置，但包含該凸環部142的 該套環140並非必須被使用。仍可替換的是，一不含有該 凸環部142的軸套狀套環亦可予以使用。仍可替換地，螺 栓、螺母及類似物亦可用於固定該排氣室12〇 ,以在該排 氣系統100裝配至該車體框架30後不能沿著該車寬方向移 動。 在上述實施例中，雖然該第二突出部為圓柱形，但其可 為棱柱形。 在上述實施例中，雖然該護環132係由該彈性構件（橡 膠）形成，但該護環132亦可由其他彈性構件形成，例如合 成樹脂。此外，該護環132亦可提供於該車體框架3〇之側 面上’而代替在該排氣室12〇之側面上。 在上述實施例中，該第一支撐機構（托架121及螺栓123) 135989-1001230.doc •19- 1361776 支樓該排亂至120之該左側部分12〇Lb，且該第二支撐機構 (托架131、螺栓133及該套環140)支撐該排氣室12〇之該右 側部分120Rb。然而，該第一支撐機構及該第二支撐機構 並非必須支撐該排氣室120之分別的左側部分12〇Lb及右側 部分120Rb。舉例來說，該第一支撐機構可替代支撐該消 音器190之該前端部120a。 在上述實施例中’雖然該第一支撐機構係藉由該托架 121及該螺栓123予以配置，但該第一支撐機構亦可藉由例 如一轴及一螺母而予以配置。 在上述實施例中’該排氣系統1 00係藉由該排氣管i丨〇、 該排氣室120及該消音器190而整體地予以配置。然而，該 排氣系統110並非必須藉由該排氣管丨i0、該排氣室120及 該消音器190而整體地予以配置。 因此’本發明當然包含各種其他未描述於此的實施例。 所以’根據以上提供之描述，本發明之技術範圍僅藉由如 在所附請求項中所說明之適當的發明具體零件所界定。 【圖式簡單說明】 圖1為本發明之一實施例之一機車i 〇的左側視圖。 圖2為本發明之該實施例之該機車1〇在例如一車體蓋（未 顯示）的元件被移除之狀態下的右側視圖。 圖3為本發明之該實施例的該排氣系統1 〇〇之一總體透視 圖。 圖4為本發明之該實施例的一排氣室120及迴流管180之 一平面圖。 135989-1001230.doc -20- 1361776 圖5為本發明之該實施例的該排氣室120及迴流管180的 左側視圖。 圖6為該排氣室120之一左側部分120Lb及該左側部分 120Lb之一周圍部分的透視圖。 圖7為該排氣室12〇之一右側部分i2〇Rb及該右側部分 120Rb之一周圍部分的透視圖。 圖8為沿圖5中之線F8-F8所擷取的本發明之該實施例的 一托架13 1之剖面圖。 圖9為該排氣室120之該右側部分12〇处及該右侧部分 120Rb之一周圍部分的側視圖。 圖ίο為本發明之該實施例的—包含一套環的第二支 撐機構之一分解透視圖。 【主要元件符號說明】 10 機車 10Ra 右側部分 20 前輪 30 車體框架 31 框架托架 31a 輪榖 32 框架托架 32a 室支撐部 32b 插入孔 32c 下邊緣部 33 撐條 135989-1001230.doc 1361776 40 40a 50 90 100 110 111 112 120 120a 120Lb 120Rb 121 121a 123 131 131a 132 133 134 140 141 141a 142 引擎 汽缸頭 中心支架 後輪 排氣糸統 排氣管 催化器 連接部 排氣室 前邊緣部 左側部分 右侧部分 托架 螺母部 螺栓 托架 護環支撐部 護環 螺栓 墊圈 套環 本體部 内螺紋部 凸環部 135989-1001230.doc -22- 1361776 142a 外邊緣 143 旋轉止擋件 180 迴流管 181 突出部 190 消音器 190a 排氣口 191 保護器 192 安裝托架 G 間隙 HI 兩度 LI 長度 135989-1001230.doc -23-Between the inspection 133 and the chamber support portion 32a. In one embodiment, as shown in Fig. 8, a washer 134 is inserted into the screw. A gap G is provided between the collar 丨4〇 and the guard ring 132. In the present embodiment, even after the exhaust system 1 is assembled to the locomotive 1 , the exhaust chamber 120 is supported to be inserted into the retaining ring 132 along the bolt 133 and the collar 140 . Move in the direction. Further, as shown in FIG. 8, a rotation stopper i43 that is slid out of the chamber support portion 32a of the frame bracket 32 to be engaged with the chamber support portion 32a is formed in the collar 140. In an embodiment, the rotation stop 143 forms an engagement projection. In the present embodiment, the exhaust system 1 is assembled from the lower portion of the locomotive to the vehicle body frame 30. When the exhaust system 100 is assembled to the body frame 3', it is in a state in which only the collar 140 is inserted into the retainer 132. After the exhaust system 1 〇〇 has been assembled to the vehicle body frame 3〇, or more specifically, the bracket 131 is located further inside the vehicle width direction than the chamber support portion 32a of the frame bracket 32 After positioning, the bolt 133 is screwed into one of the internal thread portions 141a of the collar 140 (see FIGS. 9 and 1B). The rotation stopper 143 is positioned lower than the chamber support portion 32a, 135989-1001230.doc -13 - 1361776 to assemble the exhaust system 1〇〇 to the vehicle body frame from the lower portion of the locomotive 10 During the process of 30, interference with the chamber support portion 32a is prevented. More specifically, the rotation stopper 143 is positioned in the opposite direction (downward direction) with respect to the assembly direction (upward direction) in which the exhaust system is assembled to the locomotive 10. As shown in Fig. 9, the insertion hole 32b is formed in the chamber supporting portion 32a of the frame bracket 32. The bolt 133 is screwed into the internal thread portion 1413 of the collar 140 via the insertion hole 32b. Further, the bolt 133 and the collar 14A are inserted into the grommet 132 via the insertion hole 32b. In the present embodiment, the length L1 of one of the insertion holes 32b along the longitudinal direction of the locomotive 1 is larger than the height H1 of one of the insertion holes 3213 along the vertical direction of the locomotive 1'. More specifically, the insertion hole 321 is a long hole extending in the longitudinal direction of the locomotive 10. (4) Configuration of the cylinder Fig. 10 is an exploded perspective view of the second supporting mechanism including the collar 140. The collar 140 forms one of the cylinders in this embodiment. As shown in FIG. 10, the collar 14 includes a body portion 41, a convex ring portion 142, and the rotation stopper 143. The internal thread portion 141 & is formed in the body 141, and the bolt 133 is inserted therein. The convex ring portion 42 is continuous with the body portion 141 and has an outer diameter larger than an outer diameter of the body portion 14]. The rotation stopper 143 is formed on a portion of the outer edge M2a of one of the convex ring portions 142. The rotation stopper 143 protrudes toward the chamber support portion 32a, that is, protrudes outward in the vehicle width direction. The rotation stopper 143 is in contact with one of the lower edge portions 32c of the chamber support portion 32a. Since the rotation stopper ι43 is so 135989-1001230.doc •14-1361776 in contact with the lower edge portion 32c, even after the exhaust system 100 is assembled to the vehicle body frame 30, even when the bolt 133 is screwed to The internal thread portion l4u can prevent the collar 140 from rotating with the bolt 133. (5) Operation and Effect/Advantages One of the straddle type vehicles (locomotive 10) of the present embodiment includes a body frame (body frame 30); - an engine (engine 4 〇) 'which generates a wheel for driving ( a driving force of the rear wheel 9〇); and an exhaust system (exhaust system 1〇〇), which includes - an expansion of the exhaust gas discharged through an exhaust pipe (exhaust pipe 11〇) connected to the engine Room (exhaust chamber 120). The straddle type vehicle (locomotive 1) includes a first supporting mechanism (a bracket 121 and a bolt 123), the first supporting mechanism includes a first protruding portion (bolt 123), and a second supporting mechanism (a bracket) 131. Screw inspection and collar 14G) 'The second branch mechanism contains - the second protrusion (bolt (3)). The expansion chamber is provided between the engine and the exhaustor (four) to the outside of the sounder (muffler 19〇), and is supported by the first frame mechanism and the second support mechanism on the body frame . The expansion chamber makes it immovable. The second ... support mechanism supports the expansion. A large P is inserted into the body, the insertion portion of the expansion chamber (the guard ring 132 and the collar 14A). The second support mechanism supports the expansion chamber & the span (4) is moved upward from η when the (4) 裳 裳 配 及 及 及 及 及 及 。 。 。 。 。 。 。 。 The second side of the second protrusion ===... is different from the direction in which the protrusion direction is different from the direction in which the exhaust chamber 12 is selected according to the locomotive 10 and the second collar (10). Supporting the bracket 131, the bolt (10) - being assembled to the straddle type vehicle (4) at least when the exhaust system is used, the second protruding portion (bolt 133 135989-1001230.doc •15·1361776 and collar 140) The direction of insertion into the grommet 132 moves. The protruding direction of the second protruding portion is different from the protruding direction of the first protruding portion (bolt 123). Therefore, with the first protrusion and the second protrusion, the exhaust chamber 120 can be stably supported, and at the same time, the maximum tolerance of the components such as the exhaust system 1 and the body frame 30, or More specifically, its maximum tolerance in the vehicle width direction can be more stably withstood. More specifically, the mounting accuracy of the exhaust system 100 can be modified according to the locomotive. In particular, in this embodiment, since the exhaust system 100 is integrally formed by welding, the maximum tolerances must be tolerated. The straddle type vehicle (locomotive 10) of the present embodiment is additionally characterized in that the insertion portion is provided in the expansion chamber, and an insertion hole (insertion hole 32b) for inserting the second protrusion is formed in the In the body frame, the second protrusion is inserted into the insertion portion via the insertion hole. Another feature of the straddle type vehicle (locomotive 1) of one embodiment is that the first large portion is cylindrical. The second projection is inserted into the retaining ring provided on the side of the discharge chamber 120 via the insertion hole 32b. Further, the second projection is cylindrical. Therefore, the mounting accuracy of the exhaust system 1 can be compared with, for example, the case where the second protrusion is formed on the side of the frame: or the month in which the second protrusion is not cylindrical. The improvement, at the same time, the exhaust system (10) can be easily assembled to the body frame. An additional feature of the straddle type vehicle (machine (4)) of the embodiment is that the first round 芮it: the package 3 is a cylinder (the collar 4〇) into which the second protrusion is inserted and the binding system is inserted In the insertion portion. 135989-10〇l23〇.d〇c 1361776 More specifically, the second protrusion is configured by the bolt 133 and the collar 140, wherein the bolt 133 and the collar 140 are inserted into the retaining ring 132. Therefore, the second projection can be easily formed by using a bolt 133 of a general shape and the collar 140. Further, the straddle type vehicle (locomotive 10) of the present embodiment is further characterized in that the insertion portion is formed of an elastic member and includes a grommet 132 which is provided in the expansion chamber. The second support mechanism is supported. Thus, the retaining ring 132 is formed of an elastic member (rubber). Therefore, abnormal sound, vibration, and the like can be prevented from occurring in the portion where the exhaust chamber 12 is cut. The straddle type vehicle (locomotive 1) of the embodiment is further characterized in that the first support mechanism supports one of the left side portion and the right side portion of the expansion chamber (the left side portion 120Lb), and the second support mechanism supports The other of the side portions of the expansion chamber (right portion 1 2 〇 Rb). More specifically, the first support mechanism (the bracket 121 and the bolt 123) supports the left side portion 丨2〇Lb of the exhaust chamber 120, and the second support mechanism (the bracket 131, the bolt 133, and the collar 140) The right side portion 120Rb of the exhaust chamber 12 is supported. Therefore, the mounting accuracy of the exhaust system 1 can be improved, and at the same time, the exhaust chamber 120 can be firmly supported. An additional feature of the straddle type vehicle (locomotive cymbal) of the embodiment is that the round south includes a body portion (the body portion 141) through which the second protruding portion can be inserted, and a convex portion having an outer diameter larger than the body portion a ring portion (protrusion portion 丨 42), wherein the convex ring portion is in contact with the vehicle body frame 135989-1001230.doc • 17- U01776 whereby the collar MO includes a convex ring portion 142, wherein the convex ring portion The M2 is in contact with the chamber portion of the frame bracket 32. Therefore, the strength of the portion of the collar 142 that is in contact with the frame bracket 32 can be improved. A further feature of the straddle type vehicle (locomotive 1) of the present embodiment is that an engaging protrusion (rotation stopper 143) that protrudes toward the vehicle body frame and engages with the vehicle body frame is formed Another feature of the outer edge (outer edge "(4) of the convex ring portion is another feature of the straddle type vehicle (locomotive 1) of the present embodiment in that the engaging dog exit portion is positioned relative to the exhaust system It is mounted on an opposite side (downward direction) of the assembly direction (upward direction) of the straddle type vehicle. The rotation stop member U3 is thus formed on the outer edge ^ of the convex ring portion M2. Specifically, the rotation stopper 143 is formed in the lower portion of the convex ring P142. Therefore, the exhaust system 100 is assembled to the vehicle body frame 3 (4) from the lower portion of the locomotive, thereby preventing the rotation. The striker (4) interferes with the chamber support portion 32a. A further feature of the straddle type vehicle (locomotive 1) of the present embodiment is the length of the insertion hole formed along the longitudinal direction of the straddle type vehicle (the length is greater than The height H1 of the insertion hole in the vertical direction of the locomotive. In addition to the maximum tolerance of the exhaust system 100 and the body frame 3 in the vehicle width direction, the maximum tolerance in the longitudinal direction of the locomotive can also be tolerated. An additional feature of the vehicle (locomotive 1) is that the first support mechanism supports a left side portion of the expansion chamber, and the muffler is disposed on a right side portion of the straddle type vehicle and is fixed to the vehicle body frame 135989-1001230.doc 1361776 The straddle-type vehicle (locomotive 10) of the present embodiment is further characterized in that the buddy mechanism selects the left side portion of the expansion chamber, and the exhaust pipe is connected to the engine A right side portion. As described above, since the exhaust system 100 is fixed from the left side and the right side, the mounting strength of the exhaust system 100 can be improved. (6) Other Embodiments As described above, although the present invention is via the present invention It is to be understood that the invention is not to be construed as a It will be apparent to those skilled in the art. For example, in the above embodiment, although the second protrusion is configured by the bolt 133 and the collar 140, the bracket portion 142 is included. The collar 140 does not have to be used. Alternatively, a sleeve-like collar that does not include the collar portion 142 can be used. Still alternatively, bolts, nuts, and the like can also be used to secure the row. The air chamber 12 is not movable in the vehicle width direction after the exhaust system 100 is assembled to the vehicle body frame 30. In the above embodiment, although the second protrusion is cylindrical, it may be a prism In the above embodiment, although the grommet 132 is formed of the elastic member (rubber), the grommet 132 may be formed of other elastic members such as synthetic resin. Further, the grommet 132 may be provided on the side of the body frame 3' instead of the side of the exhaust chamber 12'. In the above embodiment, the first supporting mechanism (the bracket 121 and the bolt 123) 135989-1001230.doc • 19-1361776, the branch is arranged to the left side portion 12〇Lb of 120, and the second supporting mechanism ( The bracket 131, the bolt 133, and the collar 140) support the right side portion 120Rb of the exhaust chamber 12A. However, the first support mechanism and the second support mechanism do not necessarily support the respective left side portion 12A Lb and right side portion 120Rb of the exhaust chamber 120. For example, the first support mechanism can replace the front end portion 120a of the muffler 190. In the above embodiment, the first supporting mechanism is configured by the bracket 121 and the bolt 123, but the first supporting mechanism can also be configured by, for example, a shaft and a nut. In the above embodiment, the exhaust system 100 is integrally disposed by the exhaust pipe i, the exhaust chamber 120, and the muffler 190. However, the exhaust system 110 does not have to be integrally disposed by the exhaust pipe 丨i0, the exhaust chamber 120, and the muffler 190. Thus, the invention of course includes various other embodiments not described herein. Therefore, the technical scope of the present invention is defined by the specific invention specific parts as described in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a left side view of a locomotive i 之一 according to an embodiment of the present invention. Fig. 2 is a right side view showing the locomotive 1 of the embodiment of the present invention in a state where, for example, a component of a vehicle body cover (not shown) is removed. Figure 3 is a general perspective view of the exhaust system 1 of the embodiment of the present invention. Figure 4 is a plan view of an exhaust chamber 120 and a return pipe 180 of the embodiment of the present invention. 135989-1001230.doc -20- 1361776 FIG. 5 is a left side view of the exhaust chamber 120 and the return pipe 180 of the embodiment of the present invention. Figure 6 is a perspective view of a portion of the left side portion 120Lb of the exhaust chamber 120 and a portion of the left side portion 120Lb. Fig. 7 is a perspective view showing a portion around the right side portion i2〇Rb of the exhaust chamber 12〇 and one of the right side portions 120Rb. Figure 8 is a cross-sectional view of a bracket 13 1 of the embodiment of the present invention taken along line F8-F8 of Figure 5 . Figure 9 is a side elevational view of the portion of the right side portion 12 of the exhaust chamber 120 and the portion around the right portion 120Rb. Figure ίο is an exploded perspective view of the second support mechanism including a set of rings of the embodiment of the present invention. [Main component symbol description] 10 Locomotive 10Ra Right side part 20 Front wheel 30 Car body frame 31 Frame bracket 31a Rim 32 Frame bracket 32a Room support part 32b Inserting hole 32c Lower edge part 33 Struts 135989-1001230.doc 1361776 40 40a 50 90 100 110 111 112 120 120a 120Lb 120Rb 121 121a 123 131 131a 132 133 134 140 141 141a 142 Engine cylinder head center bracket rear wheel exhaust system exhaust pipe catalytic converter connection part exhaust chamber front edge left side right side Partial bracket nut bolt bracket retaining ring support retaining ring bolt washer collar body threaded portion convex ring portion 135989-1001230.doc -22- 1361776 142a outer edge 143 rotating stop 180 return tube 181 protrusion 190 silencer 190a exhaust port 191 protector 192 mounting bracket G clearance HI two degrees LI length 135989-1001230.doc -23-