JP2009012677A - Exhaust device for vehicle - Google Patents

Exhaust device for vehicle Download PDF

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JP2009012677A
JP2009012677A JP2007178448A JP2007178448A JP2009012677A JP 2009012677 A JP2009012677 A JP 2009012677A JP 2007178448 A JP2007178448 A JP 2007178448A JP 2007178448 A JP2007178448 A JP 2007178448A JP 2009012677 A JP2009012677 A JP 2009012677A
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vehicle
silencer
width direction
support pin
vehicle body
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Akihiro Fujita
明広 藤田
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Suzuki Motor Corp
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Suzuki Motor Corp
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  • Body Structure For Vehicles (AREA)
  • Exhaust Silencers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exhaust device for a vehicle capable of enhancing the manufacturing property of a vehicle in which a silencer is arranged below a rear floor provided with a storage chamber and enhancing the bad road traveling property of the vehicle by making the ground clearance of the silencer high. <P>SOLUTION: In the exhaust device for the vehicle, the silencer 20 is arranged below the storage chamber 24 such that its axis extends in a vehicle width direction, and both side parts in a width direction of the silencer 20 are supported on a vehicle body through a mount rubber inserted with a vehicle body side support pin part 25b and a silencer side support pin part 26b provided on a vehicle body side bracket and respective silencer side brackets respectively and extending in a vehicle longitudinal direction. The mount rubber 28 is arranged between a side member 7 and a vertical wall 24a of the storage part 24 in the vehicle width direction, the mount rubber 28 is inclined such that the vehicle body side support pin part 25b is positioned at an outer side in the vehicle width direction relative to the silencer side support pin part 26b, and the vertical wall 24a of the storage chamber 24 is inclined in an inclination direction of the mount rubber 28. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、収納室が形成されたリヤフロアの下方に消音器を横置きに配設して成る車両の排気装置に関するものである。   The present invention relates to an exhaust device for a vehicle in which a silencer is disposed horizontally below a rear floor in which a storage chamber is formed.

四輪駆動車（４ＷＤ車）には、後車軸よりも後方のリヤフロアの下面側に車両幅方向両側部を車両前後方向に延びる左右一対のサイドメンバを配設し、前記リヤフロアの車両幅方向中央部に下方に膨出する収納室を形成し、該収納室の下方に、上下方向に扁平な断面形状を有する消音器をその軸線が車両幅方向に延びるよう横置きに配設して成るものがある。斯かる四輪駆動車の消音器を含む排気装置の従来例を図６に示す。   In a four-wheel drive vehicle (4WD vehicle), a pair of left and right side members extending in the vehicle front-rear direction on both sides in the vehicle width direction are disposed on the lower surface side of the rear floor behind the rear axle. A storage chamber that bulges downward is formed in the section, and a silencer having a flat cross-sectional shape in the vertical direction is disposed below the storage chamber so that its axis extends in the vehicle width direction. There is. FIG. 6 shows a conventional exhaust system including a silencer for such a four-wheel drive vehicle.

図６は従来の排気装置の左側部分を車両後方から見た図であり、同図において、１２３は車両後部のリヤフロア、１０７はリヤフロア１２３の車両幅方向両側部を車両前後方向（図６の紙面垂直方向）に延びるサイドメンバであって、リヤフロア１２３の車両幅方向中央部には下方に膨出する収納室１２４が形成されている。そして、収納室１２４の下方には消音器１２０が横置きに配設されており、該消音器１２０は、その幅方向両端部がマウントゴム１２８を介して車体に弾性支持されている。   FIG. 6 is a view of the left side portion of a conventional exhaust system as viewed from the rear of the vehicle. In FIG. 6, reference numeral 123 denotes a rear floor at the rear of the vehicle, and 107 denotes both sides of the rear floor 123 in the vehicle width direction. A storage chamber 124 that is a side member extending in the vertical direction) and bulges downward is formed at the center of the rear floor 123 in the vehicle width direction. A silencer 120 is disposed horizontally below the storage chamber 124, and both ends of the silencer 120 are elastically supported by the vehicle body via mount rubber 128.

即ち、消音器１２０の幅方向両端部から延びる消音器側支持ピン部１２６ｂと車体側から延びる車体側支持ピン部１２５ｂの車両前後方向に延びる各端部がマウントゴム１２８に挿通することによって、消音器１２０が前述のようにマウントゴム１２８を介して車体に弾性支持されている。   That is, the silencer-side support pin portion 126b extending from both ends of the silencer 120 in the width direction and the vehicle-body-side support pin portion 125b extending from the vehicle body side are inserted into the mounting rubber 128 so that the sound is silenced. The container 120 is elastically supported by the vehicle body via the mount rubber 128 as described above.

ところで、特許文献１には、車両のリヤフロア下方のスペアタイヤ収納部の側方に消音器をその軸線が車両前後方向に向くよう配設して成る排気装置が開示されている。   By the way, Patent Document 1 discloses an exhaust device in which a silencer is arranged on the side of a spare tire storage portion below a rear floor of a vehicle so that its axis is directed in the vehicle front-rear direction.

又、特許文献２には、通常の車両の平坦なリヤフロアの下方に消音器をその軸線が車両前後方向に向くよう配設し、該消音器を左右対称に傾斜配置（後面視逆ハの字状）された左右一対のマウントゴムを介して車体に弾性支持するとともに、各マウントゴムに挿通する左右の支持ピン部同士を弾性体によって連結することによって、マウントゴムの回転を規制する構成が提案されている。
実開平４−０５８４８７号公報 特開平８−０５８４００号公報 Further, in Patent Document 2, a silencer is disposed below a flat rear floor of a normal vehicle so that its axis is directed in the vehicle front-rear direction, and the silencer is inclined symmetrically (reversely viewed from the rear side). A configuration is proposed in which rotation of the mount rubber is regulated by elastically supporting the left and right support pin portions inserted through each mount rubber with elastic bodies through a pair of left and right mount rubbers Has been.
Japanese Utility Model Publication No. 4-058487 JP-A-8-058400

しかしながら、図６に示した従来の排気装置において、マウントゴム１２８がサイドメンバ１０７から外側方に突出しないようにするために、該マウントゴム１２８を上下方向に延びる状態で消音器１２０の上方に配設すると、消音器１２０の地上高が低くなって車両の悪路走破性が低下するという問題が発生する。   However, in the conventional exhaust system shown in FIG. 6, in order to prevent the mount rubber 128 from protruding outward from the side member 107, the mount rubber 128 is arranged above the silencer 120 in a state of extending vertically. If installed, the ground clearance of the silencer 120 is lowered, and the problem that the rough road running performance of the vehicle is lowered occurs.

そこで、消音器１２０の地上高を高くするためにマウントゴム１２８の位置を上方へと移動させると、該マウントゴム１２８とリヤフロア１２３との隙間が減少して消音器１２０の組付性が悪化するという問題が発生する。   Therefore, when the position of the mount rubber 128 is moved upward in order to increase the ground clearance of the silencer 120, the gap between the mount rubber 128 and the rear floor 123 is reduced, and the assembling property of the silencer 120 is deteriorated. The problem occurs.

又、マウントゴム１２８を上下方向に延びるよう配設すると、収納室１２４の縦壁１２４ａをマウントゴム１２８と干渉しないよう上下方向に延ばす必要が生じ、収納室１２４の容積が減少するとともに、収納室１２４をリヤフロア１２３と一体に絞り加工によって形成する場合の成形が困難になるという問題が発生する。   If the mount rubber 128 is disposed so as to extend in the vertical direction, the vertical wall 124a of the storage chamber 124 needs to be extended in the vertical direction so as not to interfere with the mount rubber 128, the volume of the storage chamber 124 is reduced, and the storage chamber There arises a problem that it becomes difficult to form 124 integrally with the rear floor 123 by drawing.

尚、特許文献１，２に記載された排気装置は、何れも平坦なリヤフロアの下方に消音器をその軸線が車両前後方向に向くよう配設して成るものであり、本発明が対象とする排気装置とは異なるものである。   The exhaust devices described in Patent Documents 1 and 2 are each configured by disposing a silencer below the flat rear floor so that the axis thereof is directed in the vehicle front-rear direction. It is different from the exhaust device.

本発明は前記問題に鑑みてなされたもので、その目的とする処は、収納室を備えたリヤフロアの下方に消音器を配置した車両の製造性を向上させるとともに、消音器の地上高を高くして車両の悪路走破性を高めることができる車両の排気装置を提供することにある。   The present invention has been made in view of the above problems, and its object is to improve the manufacturability of a vehicle in which a silencer is disposed below a rear floor provided with a storage room and to increase the ground clearance of the silencer. An object of the present invention is to provide an exhaust device for a vehicle that can improve the rough road running performance of the vehicle.

上記目的を達成するため、請求項１記載の発明は、後車軸よりも後方のリヤフロアの下面側に車両幅方向両側部を車両前後方向に延びる左右一対のサイドメンバを配設し、前記リヤフロアの車両幅方向中央部に下方に膨出する収納室を形成し、該収納室の下方に、上下方向に扁平な断面形状を有する消音器をその軸線が車両幅方向に延びるよう配設するとともに、前記サイドメンバと前記消音器の相対向する左右の各部位に車体側ブラケットと消音器側ブラケットをそれぞれ配設し、各車体側ブラケットと各消音器側ブラケットにそれぞれ設けられた車両前後方向に延びる車体側支持ピン部と消音器側支持ピン部が挿通するマウントゴムを介して前記消音器の幅方向両側部を車体に支持して成る車両の排気装置において、
前記マウントゴムを車両幅方向において前記サイドメンバと前記収納部の縦壁との間に配設するとともに、前記車体側支持ピン部が前記消音器側支持ピン部に対して車両幅方向外側に位置するよう前記マウントゴムを傾斜させ、該マウントゴムの傾斜方向に前記収納室の縦壁を傾斜させたことを特徴とする。 In order to achieve the above object, according to the first aspect of the present invention, a pair of left and right side members extending in the vehicle front-rear direction on both sides in the vehicle width direction are arranged on the lower surface side of the rear floor behind the rear axle, A storage chamber that bulges downward is formed at the center in the vehicle width direction, and a silencer having a flat cross-sectional shape in the vertical direction is disposed below the storage chamber so that its axis extends in the vehicle width direction. A vehicle body side bracket and a silencer side bracket are respectively disposed on the left and right portions of the side member and the silencer facing each other, and extend in the vehicle front-rear direction provided on each vehicle body side bracket and each silencer side bracket. In an exhaust system for a vehicle, in which the vehicle body side support pin portion and the silencer side support pin portion are supported by the vehicle body on both sides in the width direction of the silencer via a mount rubber,
The mount rubber is disposed between the side member and the vertical wall of the storage portion in the vehicle width direction, and the vehicle body side support pin portion is positioned on the outer side in the vehicle width direction with respect to the silencer side support pin portion. The mounting rubber is inclined so that the vertical wall of the storage chamber is inclined in the inclination direction of the mounting rubber.

請求項２記載の発明は、請求項１記載の発明において、車両前後方向において前記マウントゴムを前記消音器の車両前後方向中心部よりも後方に配置するとともに、前記消音器を後ろ上りに傾斜させたことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, the mount rubber is disposed rearward of the vehicle front-rear direction center portion of the silencer in the vehicle front-rear direction, and the muffler is inclined rearward and upward. It is characterized by that.

請求項３記載の発明は、請求項１又は２記載の発明において、前記消音器の車両前後方向中心部よりも前側を他の２つのマウントゴムを介して車体に支持するとともに、各マウントゴムへの支持ピン部の挿入方向を車両幅方向としたことを特徴とする。   According to a third aspect of the present invention, in the first or second aspect of the present invention, the front side of the silencer in the front-rear direction of the vehicle is supported on the vehicle body via the other two mounting rubbers, and The support pin portion is inserted in the vehicle width direction.

請求項１記載の発明によれば、車体側支持ピン部が消音器側支持ピン部に対して車両幅方向外側に位置するようマウントゴムを傾斜させたため、マウントゴムに消音器を車両幅方向に引っ張り合う力を作用させて消音器の車両幅方向の動きを規制することができる。この結果、マウントゴムと収納室の縦壁との隙間を小さく抑えて収納室に大きな容積を確保することができるとともに、収納室の縦壁を大きく傾斜させ、収納室を絞り加工によってリヤフロアと一体成形する際の製造性が高められる。   According to the first aspect of the present invention, since the mount rubber is inclined so that the vehicle body side support pin portion is positioned on the outer side in the vehicle width direction with respect to the silencer side support pin portion, the silencer is mounted on the mount rubber in the vehicle width direction. The pulling force can be applied to restrict the movement of the silencer in the vehicle width direction. As a result, the gap between the mount rubber and the vertical wall of the storage room can be kept small, ensuring a large volume in the storage room, and the vertical wall of the storage room is greatly inclined, and the storage room is integrated with the rear floor by drawing. Manufacturability during molding is increased.

又、マウントゴムを上述のように傾斜させることによって、車体側支持ピン部の位置を上方へと移動させることなく消音器を収納室の底面に近づけて配置することができる。このため、消音器の組付性の悪化を招くことなく消音器の地上高を高くして車両の悪路走破性を高めることができる。   Further, by tilting the mount rubber as described above, the silencer can be disposed close to the bottom surface of the storage chamber without moving the position of the vehicle body side support pin portion upward. For this reason, the ground clearance of a silencer can be made high and the rough road running property of a vehicle can be improved, without causing deterioration of the assembly | attachment property of a silencer.

請求項２記載の発明によれば、車両前後方向においてマウントゴムを消音器の車両前後方向中心部よりも後方に配置するとともに、消音器を後ろ上りに傾斜させたため、該消音器の組付性の悪化を招くことなく消音器後部の地上高を高くすることができ、後車軸から後方にオーバーハングした部分の地上高を拡大して車両の悪路走破性を更に高めることができる。   According to the second aspect of the present invention, the mount rubber is disposed rearward of the vehicle front-rear direction center portion of the silencer in the vehicle front-rear direction, and the silencer is inclined rearward and upward. The ground clearance of the rear part of the silencer can be increased without incurring the deterioration of the vehicle, and the ground clearance of the portion overhanging rearward from the rear axle can be expanded to further improve the rough road running performance of the vehicle.

請求項３記載の発明によれば、消音器の車両前後方向中心部よりも前側を支持する他の２つのマウントゴムの支持ピン部の挿入方向を車両幅方向としたため、消音器の左右を支持する車両前後のマウントゴムへの支持ピン部の挿入方向が略直交し、消音器の上下方向及び車幅方向の動きが確実に規制され、消音器を収納室の底面に更に近づけて地上高を上げ、車両の悪路走破性を更に高めることができる。   According to the third aspect of the present invention, the insertion direction of the other two mounting rubber support pin portions that support the front side of the vehicle longitudinal direction center portion of the silencer is the vehicle width direction, so that the left and right sides of the silencer are supported. The insertion direction of the support pins to the mounting rubber before and after the vehicle is almost orthogonal, the movement of the muffler in the vertical direction and the vehicle width direction is reliably regulated, and the muffler is brought closer to the bottom of the storage room to increase the ground clearance This can further improve the rough road running performance of the vehicle.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る排気装置を備えた車両の透視的側面図、図２は同車両の透視的平面図、図３は本発明に係る排気装置の構成を示す車両後部の側面図、図４は同排気装置の後面図、図５は同排気装置の分解斜視図である。   FIG. 1 is a perspective side view of a vehicle equipped with an exhaust device according to the present invention, FIG. 2 is a perspective plan view of the vehicle, and FIG. 3 is a side view of a rear portion of the vehicle showing the configuration of the exhaust device according to the present invention. 4 is a rear view of the exhaust device, and FIG. 5 is an exploded perspective view of the exhaust device.

先ず、本発明に係る排気装置を備えた車両１の基本構成を図１及び図２に基づいて説明すると、図示の車両１は四輪駆動車（４ＷＤ車）であって、その車体２の前部は前車軸３に取り付けられた左右一対の前輪４によって支持され、車体２の後部は後車軸５に取り付けられた左右一対の後輪６によって支持されている。   First, the basic configuration of a vehicle 1 equipped with an exhaust device according to the present invention will be described with reference to FIGS. 1 and 2. The illustrated vehicle 1 is a four-wheel drive vehicle (4WD vehicle), The part is supported by a pair of left and right front wheels 4 attached to the front axle 3, and the rear part of the vehicle body 2 is supported by a pair of left and right rear wheels 6 attached to the rear axle 5.

又、車体２の下部には、車両幅方向両側部を車両前後方向（図１及び図２の左右方向）に延びる左右一対のサイドメンバ７が配設されており、車体２の前部のエンジンルーム８内には駆動源であるエンジン９が配設されている。そして、エンジン９の後部には変速機１０とトランスファ１１が取り付けられており、トランスファ１１から車両前方へと延びるフロントプロペラシャフト１２は前記前車軸３に連結され、トランスファ１１から車両後方へと延びるリヤプロペラシャフト１３は前記後車軸５に連結されている。   A pair of left and right side members 7 extending in the vehicle longitudinal direction (left and right direction in FIGS. 1 and 2) on both sides in the vehicle width direction are disposed at the lower part of the vehicle body 2. An engine 9 that is a drive source is disposed in the room 8. A transmission 10 and a transfer 11 are attached to the rear portion of the engine 9, and a front propeller shaft 12 extending from the transfer 11 to the front of the vehicle is connected to the front axle 3 and a rear extending from the transfer 11 to the rear of the vehicle. The propeller shaft 13 is connected to the rear axle 5.

更に、エンジン９の左右から延びる排気管１４，１５は集合体１６に接続されて集合し、集合体１６から車体２の底部を車両後方に向かって延びる排気管１７は、車幅方向略中央に車両前後方向に配設されたサブマフラー１８に接続されている。そして、サブマフラー１８から車両後方へと延びる排気管１９は左右に屈曲した後に消音器２０の前面の車幅方向中央部に接続され、消音器２０の右側部からはテールパイプ２１が右側方に向かって延びた後に車両後方へと略直角に折り曲げられ、その後端部は大気中に開口している。尚、消音器２０の車両前方には燃料タンク２２が配設されている。   Further, the exhaust pipes 14 and 15 extending from the left and right sides of the engine 9 are connected to the assembly 16 and assembled, and the exhaust pipe 17 extending from the assembly 16 toward the rear of the vehicle body 2 toward the rear of the vehicle is substantially at the center in the vehicle width direction. It is connected to a sub-muffler 18 disposed in the vehicle front-rear direction. The exhaust pipe 19 extending from the sub muffler 18 to the rear of the vehicle is bent to the left and right, and then connected to the center in the vehicle width direction on the front surface of the silencer 20, and the tail pipe 21 extends rightward from the right side of the silencer 20. After extending toward the rear of the vehicle, it is bent at a substantially right angle, and its rear end is open to the atmosphere. A fuel tank 22 is disposed in front of the silencer 20 in the vehicle.

次に、本発明に係る排気装置の詳細を図３〜図５に基づいて説明する。   Next, details of the exhaust system according to the present invention will be described with reference to FIGS.

図３に示すように、左右一対の前記サイドメンバ７は、後車軸５の車両前方位置から車両後方に向かって斜め上方に立ち上がった後、車両後方に向かって略平行に延びており、その略平行に延びる後端部の上面側であって、且つ、後車軸５よりも後方にはリヤフロア２３が略水平に設けられている。換言すれば、後車軸５よりも後方のリヤフロア２３の下面側に車両幅方向両側部を車両前後方向に延びる左右一対のサイドメンバ７が配設されている。   As shown in FIG. 3, the pair of left and right side members 7 rises obliquely upward from the vehicle front position of the rear axle 5 toward the rear of the vehicle, and then extends substantially in parallel toward the rear of the vehicle. A rear floor 23 is provided substantially horizontally on the upper surface side of the rear end portion extending in parallel and behind the rear axle 5. In other words, a pair of left and right side members 7 extending in the vehicle front-rear direction on both sides in the vehicle width direction are disposed on the lower surface side of the rear floor 23 behind the rear axle 5.

上記リヤフロア２３の車両幅方向中央部には下方に膨出する収納室２４が形成されており、該収納室２４の下方に、上下方向に扁平な楕円状の横断面形状を有する前記消音器２０がその軸線が車両幅方向に延びるよう横置きに配設されている。そして、左右の各サイドメンバ７と消音器２０の相対向する左右の各部位には車体側ブラケット２５と消音器側ブラケット２６がそれぞれ取り付けられている。   A storage chamber 24 that bulges downward is formed at the center of the rear floor 23 in the vehicle width direction. The silencer 20 has an elliptical cross-sectional shape that is flat in the vertical direction below the storage chamber 24. Is arranged horizontally so that its axis extends in the vehicle width direction. A vehicle body side bracket 25 and a silencer side bracket 26 are respectively attached to the left and right portions of the left and right side members 7 and the silencer 20 facing each other.

上記各車体側ブラケット２５の車両前後には、消音器２０に向かって車幅方向内方へと延びる車体側支持ピン部２５ａと車両後方に向かって延びる車体側支持ピン部２５ｂが設けられている。又、消音器２０の左右の側端面に取り付けられた前記各消音器側ブラケット２６の車両前後には、サイドメンバ７に向かって車幅方向外方へと延びる消音器側支持ピン部２６ａと車両前方に向かって延びる消音器側支持ピン部２６ｂが設けられている。   A vehicle body side support pin portion 25a that extends inward in the vehicle width direction toward the muffler 20 and a vehicle body side support pin portion 25b that extends toward the rear of the vehicle are provided on the front and rear sides of each of the vehicle body side brackets 25. . Further, a silencer-side support pin portion 26a extending outward in the vehicle width direction toward the side member 7 and the vehicle are provided at the front and rear of each silencer-side bracket 26 attached to the left and right side end surfaces of the silencer 20. A muffler side support pin portion 26b extending forward is provided.

而して、消音器２０は、その左右側端の前後が小判型の計４つのマウントゴム２７，２８を介して左右のサイドフレーム７に弾性支持されている。ここで、図３に示すように、車両前後方向において一方のマウントゴム２７は消音器２０の車両前後方向中心部Ｏよりも前方に配置され、他方のマウントゴム２８は消音器２０の車両前後方向中心部Ｏよりも後方に配置されており、これらのマウントゴム２７，２８の上下にはピン孔２７ａ，２８ａがそれぞれ貫設されている。   Thus, the silencer 20 is elastically supported by the left and right side frames 7 via a total of four oval-type mount rubbers 27 and 28 at the left and right ends. Here, as shown in FIG. 3, one mount rubber 27 is disposed in front of the vehicle longitudinal direction center portion O of the silencer 20 in the vehicle longitudinal direction, and the other mount rubber 28 is disposed in the vehicle longitudinal direction of the silencer 20. It is arranged behind the central portion O, and pin holes 27a and 28a are respectively provided above and below these mount rubbers 27 and 28, respectively.

そして、各マウントゴム２７の上側のピン孔２７ａに車体側ブラケット２５の車体側支持ピン部２５ａを外側方から内側に向かって差し込み、下側のピン孔２７ａに消音器側ブラケット２６の消音器側支持ピン部２６ａを内側方から外側に向かって差し込むことによって、消音器２０の両側部の前側が左右一対のマウントゴム２７を介して左右のサイドフレーム７に弾性支持される。又、後側のマウントゴム２８の上側のピン孔２８ａに車体側ブラケット２５の車体側支持ピン部２５ｂを車両前方から後方に向かって差し込み、下側のピン孔２８ａに消音器側ブラケット２６の消音器側支持ピン部２６ｂを車両後方から前方に向かって差し込むことによって、消音器２０の両側部の後側が左右一対のマウントゴム２８を介して左右のサイドフレーム７に弾性支持され、図３に示すように、消音器２０は後ろ上りに傾斜した状態で支持されている。   The vehicle body side support pin portion 25a of the vehicle body side bracket 25 is inserted into the pin hole 27a on the upper side of each mount rubber 27 from the outside to the inside, and the silencer side of the silencer side bracket 26 is inserted into the lower pin hole 27a. By inserting the support pin portion 26a from the inside toward the outside, the front sides of both sides of the silencer 20 are elastically supported by the left and right side frames 7 via a pair of left and right mounting rubbers 27. Further, the vehicle body side support pin portion 25b of the vehicle body side bracket 25 is inserted into the pin hole 28a on the upper side of the rear mounting rubber 28 from the front to the rear of the vehicle, and the sound deadening of the silencer side bracket 26 is inserted into the lower pin hole 28a. By inserting the device side support pin portion 26b from the rear to the front of the vehicle, the rear sides of both sides of the silencer 20 are elastically supported by the left and right side frames 7 via a pair of left and right mounting rubbers 28, as shown in FIG. Thus, the silencer 20 is supported in a state of being inclined backward and upward.

従って、消音器２０の車両前後方向中心部Ｏよりも前側を支持する左右一対のマウントゴム２７への支持ピン部２５ａ，２６ａの挿入方向は車両幅方向となり、消音器２０の車両前後方向中心部Ｏよりも後側を支持する左右一対のマウントゴム２８への支持ピン部２５ｂ，２６ｂの挿入方向は車両前後方向となり、前側のマウントゴム２７への支持ピン部２５ａ，２６ａの挿入方向と後側のマウントゴム２８への支持ピン部２５ｂ，２６ｂの挿入方向とは略直交することとなる。   Therefore, the insertion direction of the support pin portions 25a and 26a to the pair of left and right mount rubbers 27 that support the front side of the vehicle front-rear direction center portion O of the silencer 20 is the vehicle width direction. The insertion direction of the support pin portions 25b, 26b to the pair of left and right mount rubbers 28 that support the rear side from O is the vehicle front-rear direction, and the insertion direction and the rear side of the support pin portions 25a, 26a to the front mount rubber 27 The direction in which the support pin portions 25b and 26b are inserted into the mounting rubber 28 is substantially orthogonal.

ところで、前側のマウントゴム２７は、図３に示すように、平坦面を車幅方向に向けて側面視斜めに配置されている。又、後側のマウントゴム２８は、図４に示すように、平坦面を車両前後方向に向けた状態で、車両幅方向において左右の各サイドメンバ７とリヤフロア２３の前記収納部２４の縦壁２４ａとの間に配設されており、車体側支持ピン部２５ｂが消音器側支持ピン部２６ｂに対して車両幅方向外側に位置するよう後面視逆ハの字状に傾斜して配置されている。そして、リヤフロア２３に形成された収納室２４の左右の縦壁２４ａは、各マウントゴム２８の傾斜方向に傾く斜面に形成されている。   Incidentally, as shown in FIG. 3, the front mounting rubber 27 is disposed obliquely in a side view with the flat surface facing the vehicle width direction. Further, as shown in FIG. 4, the rear mounting rubber 28 has the vertical wall of the storage portion 24 of the left and right side members 7 and the rear floor 23 in the vehicle width direction in a state where the flat surface is directed in the vehicle front-rear direction. 24a, and the vehicle body side support pin portion 25b is inclined and arranged in a reverse letter C shape so that the vehicle body side support pin portion 25b is located outside the muffler side support pin portion 26b in the vehicle width direction. Yes. The left and right vertical walls 24 a of the storage chamber 24 formed on the rear floor 23 are formed as slopes inclined in the inclination direction of the mounting rubbers 28.

以上のように構成された排気装置においては、後側の左右のマウントゴム２８を車体側支持ピン部２５ｂが消音器側支持ピン部２６ｂに対して車両幅方向外側に位置するよう後面視逆ハの字状に傾斜させたため、これらのマウントゴム２８に消音器２０を車両幅方向に引っ張り合う力を作用させることができ、この力によって消音器２０の車両幅方向（図４の矢印Ｘ方向）の動きを規制することができる。この結果、マウントゴム２８と収納室２４の縦壁２４ａとの隙間を小さく抑えて収納室２４に大きな容積を確保することができるとともに、収納室２４の縦壁２４ａを大きく傾斜させ、収納室２４を絞り加工によってリヤフロア２３と一体成形する際の製造性が高められる。   In the exhaust system configured as described above, the rear left and right mounting rubbers 28 are reversely viewed from the rear side so that the vehicle body side support pin portion 25b is positioned on the outer side in the vehicle width direction with respect to the silencer side support pin portion 26b. Accordingly, a force for pulling the silencer 20 in the vehicle width direction can be applied to these mount rubbers 28, and this force causes the silencer 20 to move in the vehicle width direction (in the direction of arrow X in FIG. 4). Can be controlled. As a result, the gap between the mount rubber 28 and the vertical wall 24a of the storage chamber 24 can be kept small to ensure a large volume in the storage chamber 24, and the vertical wall 24a of the storage chamber 24 can be greatly inclined to store the storage chamber 24. As a result of the drawing, the manufacturability when integrally molding with the rear floor 23 is enhanced.

又、マウントゴム２８を上述のように傾斜させることによって、該マウントゴム２８に挿通する支持ピン部２５ｂ，２６ｂ間の垂直距離Ｌ１（図４参照）を図６に示した従来の支持ピン部１２５ｂ，１２６ｂ間の垂直距離Ｌ２よりも小さく抑えることができ（Ｌ１＜Ｌ２）、車体側支持ピン部２５ｂの位置を上方へと移動させることなく消音器２０を収納室２４の底面に近づけて配置することができる。即ち、消音器２０の上面と収納室２４の底面との間の垂直距離Ｓ１（図４参照）を図６に示す従来の排気装置の消音器１２０の上面と収納室１２４の底面との間の垂直距離Ｓ２よりも小さく設定することができる（Ｓ１＜Ｓ２）。このため、消音器２０の組付性の悪化を招くことなく該消音器２０の地上高を高くして車両１の悪路走破性を高めることができる。   Further, by tilting the mount rubber 28 as described above, the vertical distance L1 (see FIG. 4) between the support pin portions 25b and 26b inserted through the mount rubber 28 is the conventional support pin portion 125b shown in FIG. , 126b (L1 <L2), and the silencer 20 is disposed close to the bottom surface of the storage chamber 24 without moving the position of the vehicle body side support pin portion 25b upward. be able to. That is, the vertical distance S1 (see FIG. 4) between the top surface of the silencer 20 and the bottom surface of the storage chamber 24 is defined between the top surface of the silencer 120 and the bottom surface of the storage chamber 124 of the conventional exhaust apparatus shown in FIG. It can be set smaller than the vertical distance S2 (S1 <S2). For this reason, the ground height of the silencer 20 can be increased without increasing the assemblability of the silencer 20, and the rough road running performance of the vehicle 1 can be enhanced.

更に、本発明に係る排気装置によれば、図３に示すように、車両前後方向においてマウントゴム２８を消音器２０の車両前後方向中心部Ｏよりも後方に配置するとともに、消音器２０を後ろ上りに傾斜させたため、該消音器２０の組付性の悪化を招くことなく消音器２０後部の地上高を高くすることができ、後車軸５から後方にオーバーハングした部分の地上高Ｈを拡大して車両１の悪路走破性を更に高めることができる。   Further, according to the exhaust system of the present invention, as shown in FIG. 3, the mount rubber 28 is arranged behind the center O of the silencer 20 in the vehicle longitudinal direction, and the silencer 20 is placed behind the silencer 20 as shown in FIG. Since it is inclined upward, the ground clearance at the rear part of the silencer 20 can be increased without deteriorating the assembling property of the silencer 20, and the ground height H of the portion overhanging rearward from the rear axle 5 is increased. Thus, it is possible to further improve the rough road running performance of the vehicle 1.

又、本発明に係る排気装置においては、消音器２０の車両前後方向中心部Ｏよりも前側を支持する２つのマウントゴム２７の支持ピン部２５ａ，２６ａの挿入方向を車両幅方向とし、消音器２０の車両前後方向中心部Ｏよりも後側を支持する２つのマウントゴム２８の支持ピン部２５ｂ，２６ｂの挿入方向を車両前後方向としたため、前側のマウントゴム２７への支持ピン部２５ａ，２６ａの挿入方向と後側のマウントゴム２８への支持ピン部２５ｂ，２６ｂの挿入方向とは略直交し、消音器２０の上下方向及び車幅方向の動きが確実に規制され、消音器２０を収納室２４の底面に更に近づけて地上高を上げ、車両１の悪路走破性を更に高めることができる。   Further, in the exhaust system according to the present invention, the insertion direction of the support pin portions 25a and 26a of the two mount rubbers 27 that support the front side of the silencer 20 in the front-rear direction center O of the vehicle is the vehicle width direction. Since the insertion direction of the support pin portions 25b and 26b of the two mount rubbers 28 that support the rear side of the center portion O in the vehicle front-rear direction 20 is the vehicle front-rear direction, the support pin portions 25a and 26a to the mount rubber 27 on the front side And the insertion direction of the support pin portions 25b and 26b to the rear mounting rubber 28 are substantially orthogonal to each other, and the movement of the silencer 20 in the vertical direction and the vehicle width direction is reliably restricted, and the silencer 20 is stored. The ground height can be increased by being closer to the bottom surface of the chamber 24, and the rough road traveling performance of the vehicle 1 can be further enhanced.

本発明に係る排気装置を備えた車両の透視的側面図である。It is a see-through | perspective side view of the vehicle provided with the exhaust apparatus which concerns on this invention. 本発明に係る排気装置を備えた車両の透視的平面図である。1 is a perspective plan view of a vehicle equipped with an exhaust device according to the present invention. 本発明に係る排気装置の構成を示す車両後部の側面図である。1 is a side view of a rear portion of a vehicle showing a configuration of an exhaust device according to the present invention. 本発明に係る排気装置の後面図である。It is a rear view of the exhaust apparatus which concerns on this invention. 本発明に係る排気装置の分解斜視図である。It is a disassembled perspective view of the exhaust apparatus which concerns on this invention. 従来の排気装置の左側部分を車両後方から見た図である。It is the figure which looked at the left side part of the conventional exhaust apparatus from the vehicle rear.

符号の説明Explanation of symbols

１ 車両
２ 車体
３ 前車軸
４ 前輪
５ 後車軸
６ 後輪
７ サイドメンバ
８ エンジンルーム
９ エンジン
１０ 変速機
１１ トランスファ
１２ フロントプロペラシャフト
１３ リヤプロペラシャフト
１４，１５ 排気管
１６ 集合体
１７ 排気管
１８ サブマフラー
１９ 排気管
２０ 消音器
２１ テールパイプ
２２ 燃料タンク
２３ リヤフロア
２４ 収納室
２４ａ 収納室の縦壁
２５ 車体側ブラケット
２５ａ，２５ｂ 車体側支持ピン部
２６ 消音器側ブラケット
２６ａ，２６ｂ 消音器側支持ピン部
２７，２８ マウントゴム
２７ａ，２８ａ マウントゴムのピン孔
Ｏ 消音器の車両前後方向中心部 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Front axle 4 Front wheel 5 Rear axle 6 Rear wheel 7 Side member 8 Engine room 9 Engine 10 Transmission 11 Transfer 12 Front propeller shaft 13 Rear propeller shaft 14, 15 Exhaust pipe 16 Assembly 17 Exhaust pipe 18 Sub-muffler DESCRIPTION OF SYMBOLS 19 Exhaust pipe 20 Silencer 21 Tail pipe 22 Fuel tank 23 Rear floor 24 Storage room 24a Vertical wall of storage room 25 Car body side bracket 25a, 25b Car body side support pin part 26 Silencer side bracket 26a, 26b Silencer side support pin part 27 , 28 Mount rubber 27a, 28a Mount rubber pin hole O Center of the silencer in the vehicle longitudinal direction

Claims (3)

後車軸よりも後方のリヤフロアの下面側に車両幅方向両側部を車両前後方向に延びる左右一対のサイドメンバを配設し、前記リヤフロアの車両幅方向中央部に下方に膨出する収納室を形成し、該収納室の下方に、上下方向に扁平な断面形状を有する消音器をその軸線が車両幅方向に延びるよう配設するとともに、前記サイドメンバと前記消音器の相対向する左右の各部位に車体側ブラケットと消音器側ブラケットをそれぞれ配設し、各車体側ブラケットと各消音器側ブラケットにそれぞれ設けられた車両前後方向に延びる車体側支持ピン部と消音器側支持ピン部が挿通するマウントゴムを介して前記消音器の幅方向両側部を車体に支持して成る車両の排気装置において、
前記マウントゴムを車両幅方向において前記サイドメンバと前記収納部の縦壁との間に配設するとともに、前記車体側支持ピン部が前記消音器側支持ピン部に対して車両幅方向外側に位置するよう前記マウントゴムを傾斜させ、該マウントゴムの傾斜方向に前記収納室の縦壁を傾斜させたことを特徴とする車両の排気装置。 A pair of left and right side members extending in the vehicle front-rear direction on both sides in the vehicle width direction are disposed on the lower surface side of the rear floor behind the rear axle, and a storage chamber that bulges downward is formed in the vehicle width direction center portion of the rear floor. A silencer having a cross-sectional shape that is flat in the vertical direction is disposed below the storage chamber so that the axis thereof extends in the vehicle width direction, and the left and right parts of the side member and the silencer that face each other. The vehicle body side bracket and the silencer side bracket are respectively disposed in the vehicle body, and the vehicle body side support pin portion and the silencer side support pin portion, which are provided in each vehicle body side bracket and each silencer side bracket and extend in the vehicle front-rear direction, are inserted. In an exhaust system for a vehicle formed by supporting both sides in the width direction of the silencer on a vehicle body via a mount rubber,
The mount rubber is disposed between the side member and the vertical wall of the storage portion in the vehicle width direction, and the vehicle body side support pin portion is positioned on the outer side in the vehicle width direction with respect to the silencer side support pin portion. An exhaust apparatus for a vehicle, wherein the mount rubber is inclined so that the vertical wall of the storage chamber is inclined in the inclination direction of the mount rubber. 車両前後方向において前記マウントゴムを前記消音器の車両前後方向中心部よりも後方に配置するとともに、前記消音器を後ろ上りに傾斜させたことを特徴とする請求項１記載の車両の排気装置。   2. The vehicle exhaust system according to claim 1, wherein the mount rubber is disposed rearward of a center portion of the muffler in the vehicle front-rear direction, and the muffler is inclined rearward and upward. 前記消音器の車両前後方向中心部よりも前側を他の２つのマウントゴムを介して車体に支持するとともに、各マウントゴムへの支持ピン部の挿入方向を車両幅方向としたことを特徴とする請求項１又は２記載の車両の排気装置。
The front side of the silencer in the vehicle longitudinal direction is supported on the vehicle body via the other two mounting rubbers, and the insertion direction of the support pin portion to each mounting rubber is the vehicle width direction. The exhaust device for a vehicle according to claim 1 or 2.
JP2007178448A 2007-07-06 2007-07-06 Exhaust device for vehicle Pending JP2009012677A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010173392A (en) * 2009-01-28 2010-08-12 Mazda Motor Corp Rear body structure for vehicle
DE102011053364A1 (en) 2010-10-01 2012-04-05 Suzuki Motor Corp. Floor frame structure for a motor vehicle
JP2018062912A (en) * 2016-10-14 2018-04-19 マツダ株式会社 Support structure of exhaust muffler
US10343513B2 (en) 2016-12-05 2019-07-09 Kubota Corporation Work vehicle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010173392A (en) * 2009-01-28 2010-08-12 Mazda Motor Corp Rear body structure for vehicle
DE102011053364A1 (en) 2010-10-01 2012-04-05 Suzuki Motor Corp. Floor frame structure for a motor vehicle
US8820819B2 (en) 2010-10-01 2014-09-02 Suzuki Motor Corporation Vehicle floor frame structure
DE102011053364B4 (en) 2010-10-01 2018-07-05 Suzuki Motor Corp. Floor frame structure for a motor vehicle
JP2018062912A (en) * 2016-10-14 2018-04-19 マツダ株式会社 Support structure of exhaust muffler
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