JP2002371839A - Exhaust pipe supporting device - Google Patents
Exhaust pipe supporting deviceInfo
- Publication number
- JP2002371839A JP2002371839A JP2001184265A JP2001184265A JP2002371839A JP 2002371839 A JP2002371839 A JP 2002371839A JP 2001184265 A JP2001184265 A JP 2001184265A JP 2001184265 A JP2001184265 A JP 2001184265A JP 2002371839 A JP2002371839 A JP 2002371839A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- main body
- spring
- bracket
- supporting device
- 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.)
- Granted
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust Silencers (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排気管と被支持体
との間に配設されて該排気管を該被支持体に吊り下げ支
持するために用いられる排気管支持装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe supporting device disposed between an exhaust pipe and a supported member for suspending and supporting the exhaust pipe on the supported member.
【０００２】[0002]
【従来の技術】従来より、この種の排気管支持装置とし
て、排気管側に取り付けられる取付部を囲むように配設
される略Ｕ字状の本体部を備えたものが知られている
（例えば、ＤＥ１９７ ４１ ４６２ Ｃ１号公報参
照）。このものでは、図７に示すように、上記取付部１
と本体部２とが主ばね部３，３を介して互いに連結され
ており、上記本体部２をブラケット４を介して車体に固
定する一方、上記取付部１に形成された貫通孔１ａに、
図示省略の排気管から延びる支持部材を挿入するように
構成されている。尚、上記本体部２とブラケット４とは
溶接によって互いに連結されている。このように上記排
気管支持装置Ｄでは、取付部１の上側にブラケット４が
配設されると共に、その下側に本体部２の底壁部２１が
配設されるため、この取付部１が上下方向に変位したと
きには、この取付部１とブラケット４又は本体部２とが
互いに当接して上記取付部１の変位が規制されるように
なっている。2. Description of the Related Art Heretofore, as an exhaust pipe support device of this type, there has been known an exhaust pipe support device having a substantially U-shaped main body disposed so as to surround a mounting portion mounted on the exhaust pipe side (see FIG. 1). For example, see DE 197 41 462 C1). In this case, as shown in FIG.
And the main body 2 are connected to each other through main springs 3 and 3, and the main body 2 is fixed to the vehicle body via the bracket 4, while a through hole 1 a formed in the mounting portion 1 is
It is configured to insert a support member extending from an exhaust pipe not shown. The main body 2 and the bracket 4 are connected to each other by welding. As described above, in the exhaust pipe supporting device D, the bracket 4 is disposed above the mounting portion 1 and the bottom wall portion 21 of the main body 2 is disposed below the mounting portion 1. When the mounting portion 1 is displaced in the vertical direction, the mounting portion 1 and the bracket 4 or the main body portion 2 come into contact with each other so that the displacement of the mounting portion 1 is regulated.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記従来の
排気管支持装置Ｄにおいては、動ばねのピーク周波数が
主ばね部３，３の固有周波数により設定されるため、上
記ピーク周波数が極めて高くなっていた。このため、排
気管の固有周波数域（５００Ｈｚ付近）での動ばね定数
が高く、この周波数域の振動を吸振できずにこもり音が
増大してしまうという不都合がある。However, in the conventional exhaust pipe supporting device D, since the peak frequency of the dynamic spring is set by the natural frequency of the main spring portions 3, 3, the peak frequency becomes extremely high. I was For this reason, the dynamic spring constant in the natural frequency range (around 500 Hz) of the exhaust pipe is high, and there is a disadvantage that vibration in this frequency range cannot be absorbed and muffled noise increases.
【０００４】本発明は、このような事情に鑑みてなされ
たものであり、その目的とするところは、排気管と被支
持体との間に配設されて該排気管を該被支持体に吊り下
げ支持する排気管支持装置において、高周波数域での動
ばね定数の低減化を図ることにある。The present invention has been made in view of such circumstances, and an object of the present invention is to provide an exhaust pipe disposed between an exhaust pipe and a supported member and connecting the exhaust pipe to the supported member. An object of the present invention is to reduce a dynamic spring constant in a high frequency range in an exhaust pipe supporting device that is suspended and supported.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、主ばね部を有する主振動系に、新たにば
ね−マス系を付加することで、このばね−マス系の共振
による動ばねのピーク周波数を発生させることとした。In order to achieve the above-mentioned object, the present invention provides a new vibration-mass system by adding a new spring-mass system to a main vibration system having a main spring portion. To generate the peak frequency of the dynamic spring.
【０００６】具体的に、本発明は、排気管と被支持体と
の間に配設されて該排気管を該被支持体に吊り下げ支持
する排気管支持装置を対象とし、排気管側に取り付けら
れる取付部と、上記取付部を囲むように配設される略Ｕ
字状の本体部と、上記取付部と本体部の内側面とを互い
に連結する一対の主ばね部と、上記本体部を上記被支持
体に取り付けるブラケットとを備えたものとする。More specifically, the present invention is directed to an exhaust pipe supporting device disposed between an exhaust pipe and a supported body for suspending and supporting the exhaust pipe on the supported body. A mounting portion to be mounted, and a substantially U disposed so as to surround the mounting portion.
It is provided with a U-shaped main body portion, a pair of main spring portions connecting the mounting portion and the inner surface of the main body portion to each other, and a bracket for mounting the main body portion to the supported body.
【０００７】そして、上記本体部とブラケットとを、副
ばね部を介して互いに連結することを特定事項とするも
のである。ここで、上記副ばね部は、例えばゴム弾性体
により形成するのが好適である。[0007] It is a specific matter that the main body and the bracket are connected to each other via a sub-spring. Here, it is preferable that the auxiliary spring portion is formed of, for example, a rubber elastic body.
【０００８】こうすることで、取付部と、この取付部と
本体部とを連結する主ばね部とによって主振動系が構成
されると共に、上記本体部が副ばね部を介してブラケッ
トに連結されるため、この本体部をマスとするばね−マ
ス系が構成される。With this configuration, the main vibration system is constituted by the mounting portion and the main spring portion connecting the mounting portion and the main body portion, and the main body portion is connected to the bracket via the sub-spring portion. Therefore, a spring-mass system having the main body as a mass is configured.
【０００９】これにより、上記本体部と、主ばね部及び
副ばね部との共振により動ばねのピーク周波数が発生す
るため、このピーク周波数を比較的低周波数に設定する
ことによって、このピーク周波数よりも高周波数での動
ばね定数が低下する。その結果、例えば排気管の固有周
波数（５００Ｈｚ付近）での振動を効果的に吸振するこ
とができるようになり、こもり音を低減化することがで
きる。As a result, the peak frequency of the dynamic spring is generated by the resonance between the main body, the main spring portion and the sub-spring portion. By setting this peak frequency to a relatively low frequency, the peak frequency becomes lower than the peak frequency. Also, the dynamic spring constant at a high frequency decreases. As a result, for example, vibration at the natural frequency (around 500 Hz) of the exhaust pipe can be effectively absorbed, and muffled noise can be reduced.
【００１０】しかも、上記排気管支持装置は、取付部と
本体部と主ばね部とブラケットとを備えた従来の排気管
支持装置に対して、副ばね部を設けることだけで構成さ
れる。このため、排気管支持装置の大きさが従来に比べ
て大きくならず、しかもコストの増大を招くことなく製
造可能である。Further, the exhaust pipe support device is configured by merely providing a sub-spring portion with respect to a conventional exhaust pipe support device having a mounting portion, a main body portion, a main spring portion, and a bracket. For this reason, the size of the exhaust pipe support device is not increased as compared with the related art, and the exhaust pipe supporting device can be manufactured without increasing the cost.
【００１１】上記排気管支持装置においては、本体部の
両端部に、該両端部から両側外方のそれぞれに延びかつ
ブラケットに連結される連結片部を設けると共に、上記
ブラケットに、上記各連結片部が連結される被連結部を
該各連結片部に対応して設け、上記各連結片部及び被連
結部を、該各連結片部と被連結部との間に配設される副
ばね部が上下方向に対して傾くようにそれぞれ傾斜して
配設してもよい。In the exhaust pipe support device, connecting pieces are provided at both ends of the main body and extend outward from both ends to both sides and connected to the bracket. A connected part to which the parts are connected is provided corresponding to each of the connecting pieces, and each of the connecting pieces and the connected part is a sub-spring disposed between each of the connecting pieces and the connected part. The portions may be arranged so as to be inclined with respect to the vertical direction.
【００１２】こうすることで、この副ばね部の傾斜角度
に応じて、上下方向の荷重入力に対する副ばね部のばね
定数と、左右方向の荷重入力に対する副ばね部のばね定
数とが変更される。このため、この副ばね部の傾斜角度
を調整することだけで、この副ばね部の上下方向のばね
定数と、左右方向のばね定数との比率を調整することが
可能になる。その結果、排気管支持装置の上下方向に対
するばね特性と、左右方向に対するばね特性とをそれぞ
れ所望の特性にすることを容易に行い得る。By doing so, the spring constant of the auxiliary spring portion with respect to the vertical load input and the spring constant of the auxiliary spring portion with respect to the horizontal load input are changed according to the inclination angle of the auxiliary spring portion. . For this reason, it is possible to adjust the ratio between the vertical spring constant and the left-right spring constant of the auxiliary spring portion only by adjusting the inclination angle of the auxiliary spring portion. As a result, it is possible to easily set desired spring characteristics in the up-down direction and spring characteristics in the left-right direction of the exhaust pipe supporting device.
【００１３】また、本体部の両端部に、該両端部から両
側外方のそれぞれに延びかつブラケットに連結される連
結片部を設け、上記ブラケットを、上記本体部の連結片
部に連結される被連結部と、被支持体に固定される固定
部とから構成し、上記ブラケットの被連結部を、上記本
体部の連結片部の下側位置に配設してもよい。[0013] A connecting piece is provided at each of both ends of the main body and extends outwardly from both ends to both sides and connected to a bracket. The bracket is connected to the connecting piece of the main body. It may be configured by a connected portion and a fixing portion fixed to the supported member, and the connected portion of the bracket may be disposed at a lower position of the connecting piece of the main body.
【００１４】こうすることで、上記連結片部とブラケッ
トの被連結部との間に配設されている副ばね部が破断し
たときでも、上記連結片部の下側に被連結部が配設され
ているため、この連結片部は上記被連結部と係合する。
これにより、本体部の脱落、ひいては排気管の落下を防
止することができる。With this configuration, even when the auxiliary spring portion provided between the connecting piece and the connected portion of the bracket is broken, the connected portion is provided below the connecting piece. Therefore, the connecting piece engages with the connected portion.
As a result, it is possible to prevent the main body from falling off and, consequently, the exhaust pipe from falling.
【００１５】[0015]
【発明の効果】以上説明したように、本発明における排
気管支持装置によれば、本体部とブラケットとの間に副
ばね部を介在させることで、取付部と主ばね部とによっ
て構成された主振動系に、上記本体部をマスとするばね
−マス系が付加される。これにより、上記本体部と、主
ばね部及び副ばね部との共振によって比較的低周波数で
ある動ばねのピーク周波数が発生するため、このピーク
周波数よりも高周波数での動ばね定数を低下させること
ができる。その結果、排気管の固有周波数域での振動を
効果的に吸振して、こもり音を低減化することができ
る。As described above, according to the exhaust pipe supporting device of the present invention, the auxiliary spring portion is interposed between the main body and the bracket, so that the mounting portion and the main spring portion are provided. A spring-mass system having the main body as a mass is added to the main vibration system. As a result, a peak frequency of the dynamic spring, which is a relatively low frequency, is generated due to the resonance between the main body, the main spring portion, and the sub-spring portion. be able to. As a result, vibration in the natural frequency range of the exhaust pipe can be effectively absorbed, and muffled noise can be reduced.
【００１６】また、副ばね部を上下方向に対して傾いて
配設することで、この副ばね部の上下方向のばね定数と
左右方向のばね定数との比率を上記副ばね部の傾斜角度
によって容易に調整することが可能になり、その結果、
排気管支持装置の上下方向に対するばね特性と、左右方
向に対するばね特性とをそれぞれ所望の特性にすること
ができる。Further, by arranging the sub-spring portion inclining with respect to the up-down direction, the ratio between the up-down direction spring constant and the left-right direction spring constant of the sub-spring portion is determined by the inclination angle of the sub-spring portion. Can be adjusted easily, so that
The spring characteristics of the exhaust pipe supporting device in the vertical direction and the spring characteristics in the horizontal direction can be respectively set to desired characteristics.
【００１７】さらに、ブラケットの被連結部を、本体部
の連結片部の下側位置に配設することで、副ばね部が破
断したときでもこの連結片部はブラケットに係合するこ
とになり、これにより、本体部の脱落、ひいては排気管
の落下を防止することができる。Further, by arranging the connected portion of the bracket at a position below the connecting piece of the main body, the connecting piece is engaged with the bracket even when the auxiliary spring portion is broken. Thereby, it is possible to prevent the main body from falling off and, consequently, the exhaust pipe from falling.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１９】＜第１実施形態＞図１〜図３は、本発明の
第１実施形態に係る排気管支持装置Ａを示し、このもの
は、例えば消音器６３近傍の排気管６２を被支持体とし
ての車体６１に吊り下げ支持するために用いられるもの
である。<First Embodiment> FIGS. 1 to 3 show an exhaust pipe supporting apparatus A according to a first embodiment of the present invention. It is used for suspending and supporting the vehicle body 61 as a vehicle.
【００２０】上記排気管支持装置Ａは、上記排気管６２
側の支持部材６２ａが挿入される取付孔１ａが形成され
た取付部１と、この取付部１を囲むように配設されかつ
上記車体６１側に取り付けられる略Ｕ字状の本体部２
と、上記取付部１と本体部２の内側面とを互いに連結す
る一対の主ばね部３，３と、上記本体部２を車体６１に
取り付けるためにボルトによってこの車体６１に固定さ
れるブラケット４とを備えている。The exhaust pipe supporting device A includes the exhaust pipe 62.
Mounting portion 1 in which a mounting hole 1a into which the side support member 62a is inserted is formed, and a substantially U-shaped main body portion 2 disposed to surround the mounting portion 1 and mounted on the vehicle body 61 side
A pair of main springs 3 and 3 for connecting the mounting portion 1 and the inner surface of the main body 2 to each other; and a bracket 4 fixed to the vehicle body 61 by bolts for mounting the main body 2 to the vehicle body 61. And
【００２１】上記取付部１は、ブロック状ゴム弾性体に
より縦長の略矩形状に形成されており、上記取付孔１ａ
は、上記取付部１の中心位置に車体前後方向（図２の紙
面に直行する方向）に貫通して形成されている。The mounting portion 1 is formed in a vertically elongated substantially rectangular shape by a block-like rubber elastic body, and the mounting hole 1a is formed.
Is formed at the center position of the mounting portion 1 so as to penetrate in the vehicle front-rear direction (the direction perpendicular to the plane of FIG. 2).
【００２２】上記本体部２は金属製の板材を曲げ加工す
ることによって形成されており、左右方向に延びる底壁
部２１と、該底壁部２１の左右両端部から上方に延びる
垂直壁部２２，２２とからなる略Ｕ字状に形成されてい
る。上記各垂直壁部２２の上端部には（本体部２の両端
部には）、左右方向の外方に屈曲して、略水平に延びる
連結片部２３が形成されている。The main body 2 is formed by bending a metal plate, and has a bottom wall 21 extending in the left-right direction and a vertical wall 22 extending upward from both left and right ends of the bottom wall 21. , 22 are formed in a substantially U-shape. At the upper end portion of each of the vertical wall portions 22 (at both end portions of the main body portion 2), a connecting piece portion 23 that is bent outward in the left-right direction and extends substantially horizontally is formed.
【００２３】上記主ばね部３，３は、上記取付部１にお
ける左右両側部のそれぞれから、左右両側外方の下方に
向かって延びるように配設されていて、その先端が上記
本体部２における垂直壁部２２の内側面に接続されてい
る。この各主ばね部３は、ゴム弾性体によって上記取付
部１と一体に形成されている。The main springs 3 and 3 are disposed so as to extend downward from both left and right sides of the mounting portion 1 to the outside on both the left and right sides, respectively. It is connected to the inner surface of the vertical wall 22. Each of the main spring portions 3 is formed integrally with the mounting portion 1 by a rubber elastic body.
【００２４】上記ブラケット４は平板状に形成されてお
り、その両端部には、上記車体６１に固定するためのボ
ルトが貫通する貫通孔４ａが形成されている。このブラ
ケット４は、上記本体部２の上側にこの本体部２の上側
開口を封止するように配設されており、上記本体部２の
各連結片部２３，２３とこのブラケット４とは、ゴム弾
性体からなる副ばね部５，５を介して互いに連結されて
いる。The bracket 4 is formed in a flat plate shape, and a through hole 4a through which a bolt for fixing to the vehicle body 61 penetrates is formed at both ends. The bracket 4 is disposed above the main body 2 so as to seal the upper opening of the main body 2. Each of the connecting pieces 23 of the main body 2 and the bracket 4 are They are connected to each other via auxiliary spring portions 5 and 5 made of rubber elastic material.
【００２５】この排気管支持装置Ａは、上記金属製の本
体部２及びブラケット４に対して、取付部１、主ばね部
３，３及び副ばね部５，５のそれぞれを加硫接着させる
ことによって製造することが可能である。In the exhaust pipe supporting device A, the mounting portion 1, the main spring portions 3, 3 and the sub spring portions 5, 5 are respectively vulcanized and bonded to the metal body 2 and the bracket 4. It is possible to manufacture.
【００２６】このように、上記排気管支持装置Ａは、取
付部１と主ばね部３，３とによって主振動系が構成され
ると共に、上記本体部２が副ばね部５を介してブラケッ
ト４に連結されているため、この本体部２をマスとする
ばね−マス系が構成される。As described above, in the exhaust pipe supporting device A, a main vibration system is constituted by the mounting portion 1 and the main spring portions 3 and 3, and the main body portion 2 is connected to the bracket 4 by the auxiliary spring portion 5. To form a spring-mass system having the main body 2 as a mass.
【００２７】ここで、図４に示す動ばね特性図を参照し
ながら、本実施形態に係る排気管支持装置Ａの作用効果
について説明する。Here, the operation and effect of the exhaust pipe support device A according to the present embodiment will be described with reference to the dynamic spring characteristic diagram shown in FIG.
【００２８】まず、副ばね部５，５を備えない従来の排
気管支持装置Ｄ（図７参照）では、動ばねのピーク周波
数が主ばね部３，３の固有周波数により設定されるた
め、上記ピーク周波数が高周波数になっている（同図の
破線参照）。このため、排気管６２の固有周波数域（５
００Ｈｚ付近）での動ばね定数が高く、この周波数域の
振動を吸振できずに、こもり音の発生を招いてしまう。First, in the conventional exhaust pipe supporting device D (see FIG. 7) having no auxiliary spring portions 5 and 5, the peak frequency of the dynamic spring is set by the natural frequency of the main spring portions 3 and 3. The peak frequency is high (see the broken line in the figure). For this reason, the natural frequency range (5
(At around 00 Hz), the vibration in this frequency range cannot be absorbed, and a muffled sound is generated.
【００２９】これに対し、本実施形態に係る排気管支持
装置Ａでは、上記本体部２と、主ばね部３，３及び副ば
ね部５，５との共振により動ばねのピーク周波数（２７
０Ｈｚ付近）が発生するようになる（同図の実線参
照）。このため、同図にハッチングを付して示すよう
に、このピーク周波数よりも高周波数での動ばね定数が
低下する。その結果、排気管６２の固有周波数域での振
動を効果的に吸振して、こもり音を低減化することがで
きる。On the other hand, in the exhaust pipe supporting device A according to this embodiment, the peak frequency (27) of the dynamic spring is generated by the resonance of the main body 2 and the main springs 3 and 3 and the sub springs 5 and 5.
(Near 0 Hz) occurs (see the solid line in the figure). Therefore, as shown by hatching in the figure, the dynamic spring constant at a frequency higher than the peak frequency decreases. As a result, vibration in the natural frequency range of the exhaust pipe 62 can be effectively absorbed, and muffled noise can be reduced.
【００３０】ここで、上記動ばねのピーク周波数ｆは、
主ばね部３，３のばね定数をｋ１、副ばね部５，５のば
ね定数をｋ２、本体部２の質量をＭとしたときに、 ｆ＝１／（２π）×｛（ｋ１＋ｋ２）／Ｍ｝1/2 で設定される。このため、上記副ばね部５，５のばね定
数ｋ２又は本体部２の質量Ｍを調整することで動ばねの
ピーク周波数ｆを調整することができ、これにより、所
望の周波数域での動ばね定数を低下させることができる
ようになる。Here, the peak frequency f of the dynamic spring is
When the spring constant of the main spring portions 3 and 3 is k1, the spring constant of the sub spring portions 5 and 5 is k2, and the mass of the main body portion 2 is M, f = 1 / (2π) × ｛(k1 + k2) / Mされ る Set by 1/2 . Therefore, the peak frequency f of the dynamic spring can be adjusted by adjusting the spring constant k2 of the sub-springs 5 and 5 or the mass M of the main body 2, whereby the dynamic spring in a desired frequency range can be adjusted. The constant can be reduced.
【００３１】この排気管支持装置Ａは、従来の排気管支
持装置Ｄに、単に副ばね部５，５を付加することだけで
構成される。このため、排気管支持装置Ａの大きさが従
来に比べて大きくならず、しかもコストの増大を招くこ
となく製造することができる。The exhaust pipe supporting device A is constructed by simply adding the auxiliary spring portions 5 and 5 to the conventional exhaust pipe supporting device D. For this reason, the size of the exhaust pipe supporting device A does not become large as compared with the related art, and the exhaust pipe supporting device A can be manufactured without increasing the cost.
【００３２】また、上記取付部１が上下方向に大きく変
位したときは、縦長に形成されたこの取付部１の上端部
又は下端部が、ブラケット４又は本体部２の底壁部２２
にそれぞれ当接するため、この取付部１の変位、つまり
排気管６２の変位を規制することができる。When the mounting portion 1 is largely displaced in the vertical direction, the upper end or lower end of the vertically long mounting portion 1 is attached to the bracket 4 or the bottom wall portion 22 of the main body 2.
, Respectively, the displacement of the mounting portion 1, that is, the displacement of the exhaust pipe 62 can be restricted.
【００３３】＜第２実施形態＞図５は本発明の第２実施
形態に係る排気管支持装置Ｂを示しており、このもの
は、本体部２における連結片部２４，２４が上下方向に
対して傾斜して配設されている点が上記第１実施形態と
は異なる。尚、上記排気管支持装置Ｂの内、第１実施形
態のものと同一の部材には同一符号を付してその説明は
省略する。<Second Embodiment> FIG. 5 shows an exhaust pipe supporting device B according to a second embodiment of the present invention, in which connecting pieces 24, 24 in the main body 2 are arranged vertically. The second embodiment is different from the first embodiment in that the first embodiment is disposed so as to be inclined. In the exhaust pipe supporting device B, the same members as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【００３４】上述したように、上記排気管支持装置Ｂに
おける取付片部２４，２４は、各垂直壁部２２の上端部
において左右方向の外方に屈曲して、斜め上方に延びて
形成されている。As described above, the mounting pieces 24, 24 in the exhaust pipe supporting device B are formed so as to be bent outward in the left-right direction at the upper end of each vertical wall 22, and to extend obliquely upward. I have.
【００３５】また、ブラケット４は、上記本体部２の上
側開口で左右方向に延びる中央部４１と、この中央部４
１の両側端部からそれぞれ左右方向外方の上方に延びる
被連結部４２，４２と、この各被連結部４２の外側端部
から水平方向の外方に延びる固定部４３，４３とから構
成されており、この各固定部４３にボルト用の貫通孔４
ａが形成されている。これにより、上記本体部２の傾斜
した連結片部２４に連結される被連結部４２が傾斜して
配設されることになる。The bracket 4 has a central portion 41 extending in the left-right direction at the upper opening of the main body 2 and
1 are connected to each other and extend from left and right ends to the outside in the left-right direction, and fixed portions 43 and 43 are extended outward from the outer ends of the connected portions 42 in the horizontal direction. Each fixing portion 43 has a through hole 4 for a bolt.
a is formed. As a result, the connected portion 42 connected to the inclined connecting piece 24 of the main body 2 is disposed to be inclined.
【００３６】そして、副ばね部５１は、上記本体部２の
各連結片部２４とブラケット４の被連結部４２との間に
配設されており、これにより、この副ばね部５２は上下
方向に対して傾くようになっている。The sub-spring portion 51 is disposed between each connecting piece 24 of the main body 2 and the connected portion 42 of the bracket 4, so that the sub-spring portion 52 is vertically moved. Leans against.
【００３７】この排気管支持装置Ｂにおいても、上記本
体部２が副ばね部５１を介してブラケット４に連結され
ているため、取付部１と主ばね部３，３とによって構成
される主振動系に、上記本体部２をマスとするばね−マ
ス系が付加された構成になっている。このため、上記第
１実施形態と同様に、上記本体部２と、主ばね部３，３
及び副ばね部５１との共振により動ばねのピーク周波数
が発生し、このピーク周波数よりも高周波数での動ばね
定数を低下させることができる。その結果、排気管６２
の固有振動数での振動を効果的に吸振して、こもり音を
低減化することができる。Also in this exhaust pipe supporting device B, since the main body 2 is connected to the bracket 4 via the sub-spring 51, the main vibration constituted by the mounting portion 1 and the main springs 3, 3 is provided. A spring-mass system having the main body 2 as a mass is added to the system. Therefore, as in the first embodiment, the main body 2 and the main springs 3
A peak frequency of the dynamic spring is generated by resonance with the auxiliary spring portion 51, and the dynamic spring constant at a frequency higher than the peak frequency can be reduced. As a result, the exhaust pipe 62
Vibration at the natural frequency is effectively absorbed, and muffled noise can be reduced.
【００３８】また、上記排気管支持装置Ｂでは、本体部
２の連結片部２４及びブラケット４の被連結部４２がそ
れぞれ傾斜して配設され、これに伴い副ばね部５１が傾
いて配設されている。このため、副ばね部５１の傾斜角
度θに応じて、この副ばね部５１の上下方向の荷重入力
に対するばね定数と、左右方向の荷重入力に対するばね
定数とが変更される。これにより、この副ばね部５１の
傾斜角度θを調整することだけで、この副ばね部５１の
上下方向ばね定数と左右方向ばね定数との比率の調整が
可能になる。その結果、排気管支持装置Ｂの上下方向に
対するばね特性と、左右方向に対するばね特性とをそれ
ぞれ容易に所望の特性にすることができる。In the exhaust pipe supporting device B, the connecting piece 24 of the main body 2 and the connected portion 42 of the bracket 4 are respectively arranged at an angle, and the auxiliary spring 51 is arranged at an angle. Have been. Therefore, the spring constant for the vertical load input and the spring constant for the horizontal load input of the auxiliary spring portion 51 are changed according to the inclination angle θ of the auxiliary spring portion 51. Accordingly, the ratio between the vertical spring constant and the horizontal spring constant of the sub spring portion 51 can be adjusted only by adjusting the inclination angle θ of the sub spring portion 51. As a result, the spring characteristics in the up-down direction and the spring characteristics in the left-right direction of the exhaust pipe supporting device B can be easily set to desired characteristics.
【００３９】＜第３実施形態＞図６は第３実施形態に係
る排気管支持装置Ｃを示していて、このものは、本体部
２における連結片部２５，２５の下側位置に、ブラケッ
ト４の被連結部４４が配設されている点が上記第１実施
形態とは異なる。尚、上記排気管支持装置Ｃの内、第１
実施形態のものと同一の部材には同一符号を付してその
説明は省略する。<Third Embodiment> FIG. 6 shows an exhaust pipe supporting device C according to a third embodiment. The exhaust pipe supporting device C is provided with a bracket 4 at a position below the connecting pieces 25 in the main body 2. This is different from the first embodiment in that the connected portion 44 is provided. The first of the exhaust pipe supporting devices C is
The same members as those of the embodiment are denoted by the same reference numerals, and description thereof will be omitted.
【００４０】上記排気管支持装置Ｃにおける本体部２
は、左右方向に延びる底壁部２１と、この底壁部２１の
左右両端部から上方に延びる垂直壁部２２，２２と、こ
の各垂直壁部２２の上端部において左右方向の外方に屈
曲して、略水平に延びる連結片部２５，２５とによって
略逆ハット状に形成されている。そして、この一対の連
結片部２５，２５の間を互いに掛け渡すように左右方向
に延びる上壁部２６が配設されており、これにより、上
記本体部２の上側開口を封止している。この本体部２は
一枚の板材を略ハット状に曲げ加工すると共に、各連結
片部２５と上壁部２６とを溶接することで形成可能であ
る。尚、この本体部２は、底壁部２１と、一対の垂直壁
部２２，２２と、一対の連結片部２５，２５とからなる
略逆ハット状の部材に対して、上壁部２６となる平板状
の部材を固定することで形成してもよい。The main body 2 in the exhaust pipe support device C
A bottom wall 21 extending in the left-right direction, vertical walls 22, 22 extending upward from both left and right ends of the bottom wall 21, and an upper end of each vertical wall 22 bent outward in the left-right direction. The connecting pieces 25, 25 extending substantially horizontally form a substantially inverted hat shape. An upper wall portion 26 extending in the left-right direction is provided so as to bridge between the pair of connecting pieces 25, 25, thereby sealing the upper opening of the main body 2. . The main body 2 can be formed by bending a single plate material into a substantially hat shape and welding each connecting piece 25 to the upper wall 26. The main body 2 has an upper wall 26 and a substantially inverted hat-shaped member including a bottom wall 21, a pair of vertical walls 22, 22 and a pair of connecting pieces 25, 25. It may be formed by fixing a flat plate-shaped member.
【００４１】そして、上記本体部２を車体６１に取り付
けるブラケットは、第１及び第２のブラケット４，４か
ら構成されており、各ブラケット４は、本体部２の連結
片部２５に連結される被連結部４４と、車体６１に固定
される固定部４５とを備えた略Ｚ字状に形成されてい
る。The bracket for attaching the main body 2 to the vehicle body 61 is composed of first and second brackets 4 and 4, and each bracket 4 is connected to the connecting piece 25 of the main body 2. It has a substantially Z-shape including a connected portion 44 and a fixing portion 45 fixed to the vehicle body 61.
【００４２】そして、上記第１及び第２のブラケット
４，４は、上記本体部２の左右両側のそれぞれにおい
て、その被連結部４４が上記本体部２における各連結片
部２５の下側に位置する一方、その固定部４５が上記連
結片部２５よりも外側位置の上方に位置するように配設
されており、上記被連結部４４と連結片部２５との間に
副ばね部５が配設されて両者４４，２５を互いに連結し
ている。The first and second brackets 4, 4 have their connected portions 44 located below the connecting piece portions 25 in the main body 2 on the right and left sides of the main body 2, respectively. On the other hand, the fixing portion 45 is disposed so as to be located above the outer position of the connecting piece 25, and the auxiliary spring portion 5 is provided between the connected portion 44 and the connecting piece 25. And the two 44, 25 are connected to each other.
【００４３】この排気管支持装置Ｃにおいても、上記本
体部２が副ばね部５を介してブラケット４，４に連結さ
れているため、取付部１と主ばね部３，３とによって構
成される主振動系に、上記本体部２をマスとするばね−
マス系が付加された構成になっている。このため、上記
第１実施形態と同様に、上記本体部２と、主ばね部３，
３及び副ばね部５との共振により動ばねのピーク周波数
が発生し、このピーク周波数よりも高周波数での動ばね
定数を低下させることができる。その結果、排気管６２
の固有周波数域での振動を効果的に吸振して、こもり音
を低減させることができる。Also in this exhaust pipe support device C, since the main body 2 is connected to the brackets 4 and 4 via the sub-springs 5, it is constituted by the mounting portion 1 and the main springs 3 and 3. A spring using the main body 2 as a mass in the main vibration system
It has a configuration with a mass system added. For this reason, similarly to the first embodiment, the main body 2 and the main springs 3
A peak frequency of the dynamic spring is generated by resonance with the third spring 3 and the auxiliary spring portion 5, and the dynamic spring constant at a frequency higher than the peak frequency can be reduced. As a result, the exhaust pipe 62
The vibration in the natural frequency range can be effectively absorbed, and the muffled sound can be reduced.
【００４４】また、本体部２における連結片部２５の下
側位置に、ブラケット４の被連結部４４が位置している
ため、副ばね部５が破断したときにはこの連結片部２５
が被連結部４４と係合するようになる。これにより、本
体部２の脱落、ひいては排気管６２の落下を防止するこ
とができる。Since the connected portion 44 of the bracket 4 is located below the connecting piece 25 in the main body 2, when the sub-spring 5 is broken, the connecting piece 25 is cut.
Are engaged with the connected portion 44. Thus, the main body 2 can be prevented from falling off, and the exhaust pipe 62 can be prevented from falling.
【図１】第１実施形態に係る排気管支持装置を用いた排
気管の支持構造を示す正面図である。FIG. 1 is a front view showing an exhaust pipe support structure using an exhaust pipe support device according to a first embodiment.
【図２】第１実施形態に係る排気管支持装置を示す正面
図である。FIG. 2 is a front view showing the exhaust pipe support device according to the first embodiment.
【図３】第１実施形態に係る排気管支持装置を示す一部
切り欠きの平面図である。FIG. 3 is a partially cutaway plan view showing the exhaust pipe support device according to the first embodiment.
【図４】第１実施形態に係る排気管支持装置と、従来の
排気管支持装置との動ばね特性図である。FIG. 4 is a dynamic spring characteristic diagram of the exhaust pipe support device according to the first embodiment and a conventional exhaust pipe support device.
【図５】第２実施形態に係る排気管支持装置を示す図２
対応図である。FIG. 5 shows an exhaust pipe support device according to a second embodiment.
FIG.
【図６】第３実施形態に係る排気管支持装置を示す図２
対応図である。FIG. 6 shows an exhaust pipe support device according to a third embodiment.
FIG.
【図７】従来の排気管支持装置を示す図２対応図であ
る。FIG. 7 is a view corresponding to FIG. 2 showing a conventional exhaust pipe support device.
Ａ〜Ｄ 排気管支持装置 １ 取付部 ２ 本体部 ２３〜２５ 連結片部 ３ 主ばね部 ４ ブラケット ４２，４４ 被連結部 ４３，４５ 固定部 ５，５１ 副ばね部 ６１ 車体（被支持体） ６２ 排気管 ６３ 消音器（排気管） A to D Exhaust pipe support device 1 Mounting part 2 Main body part 23 to 25 Connecting piece part 3 Main spring part 4 Bracket 42, 44 Connected part 43, 45 Fixed part 5, 51 Sub spring part 61 Body (supported body) 62 Exhaust pipe 63 silencer (exhaust pipe)
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3D038 BA02 BA13 BB01 BC24 3G004 AA01 BA02 BA04 DA01 DA13 DA21 EA03 FA04 FA08 3J048 AA01 BA02 BA21 DA07 EA05 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D038 BA02 BA13 BB01 BC24 3G004 AA01 BA02 BA04 DA01 DA13 DA21 EA03 FA04 FA08 3J048 AA01 BA02 BA21 DA07 EA05
Claims (3)
排気管を該被支持体に吊り下げ支持する排気管支持装置
であって、 排気管側に取り付けられる取付部と、 上記取付部を囲むように配設される略Ｕ字状の本体部
と、 上記取付部と本体部の内側面とを互いに連結する一対の
主ばね部と、 上記本体部を上記被支持体に取り付けるブラケットとを
備え、 上記本体部とブラケットとは、副ばね部を介して互いに
連結されていることを特徴とする排気管支持装置。1. An exhaust pipe support device disposed between an exhaust pipe and a supported body for suspending and supporting the exhaust pipe on the supported body, comprising: a mounting portion mounted on the exhaust pipe side; A substantially U-shaped main body disposed so as to surround the mounting portion; a pair of main spring portions connecting the mounting portion and an inner surface of the main body portion to each other; An exhaust pipe supporting device, comprising: a mounting bracket; wherein the main body and the bracket are connected to each other via a sub-spring.
に延びかつブラケットに連結される連結片部が設けら
れ、 上記ブラケットには、上記各連結片部が連結される被連
結部が該各連結片部に対応して設けられ、 上記各連結片部及び被連結部は、該各連結片部と被連結
部との間に配設される副ばね部が上下方向に対して傾く
ようにそれぞれ傾斜して配設されていることを特徴とす
る排気管支持装置。2. A connecting piece according to claim 1, wherein both ends of the main body are provided with connecting pieces extending from both ends outwardly on both sides and connected to a bracket. A connected part to which the pieces are connected is provided corresponding to each of the connecting pieces, and each of the connecting pieces and the connected parts is disposed between each of the connecting pieces and the connected part. An exhaust pipe supporting device, wherein the sub-springs are disposed so as to be inclined with respect to the vertical direction.
に延びかつブラケットに連結される連結片部が設けら
れ、 上記ブラケットは、上記本体部の連結片部に連結される
被連結部と、被支持体に固定される固定部とから構成さ
れ、 上記ブラケットの被連結部は、上記本体部の連結片部の
下側位置に配設されていることを特徴とする排気管支持
装置。3. The body according to claim 1, wherein both ends of the main body are provided with connecting pieces extending from both ends outwardly on both sides and connected to a bracket. The bracket includes a connected portion connected to the connecting piece, and a fixing portion fixed to the supported member. The connected portion of the bracket is disposed at a lower position of the connecting piece of the main body. An exhaust pipe support device, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001184265A JP3931053B2 (en) | 2001-06-19 | 2001-06-19 | Exhaust pipe support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001184265A JP3931053B2 (en) | 2001-06-19 | 2001-06-19 | Exhaust pipe support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002371839A true JP2002371839A (en) | 2002-12-26 |
| JP3931053B2 JP3931053B2 (en) | 2007-06-13 |
Family
ID=19024056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001184265A Expired - Fee Related JP3931053B2 (en) | 2001-06-19 | 2001-06-19 | Exhaust pipe support device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3931053B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117403A (en) * | 2010-11-30 | 2012-06-21 | Tokai Rubber Ind Ltd | Muffler support |
| JP2013231469A (en) * | 2012-04-27 | 2013-11-14 | Kurashiki Kako Co Ltd | Anti-vibration mount device |
-
2001
- 2001-06-19 JP JP2001184265A patent/JP3931053B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117403A (en) * | 2010-11-30 | 2012-06-21 | Tokai Rubber Ind Ltd | Muffler support |
| JP2013231469A (en) * | 2012-04-27 | 2013-11-14 | Kurashiki Kako Co Ltd | Anti-vibration mount device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3931053B2 (en) | 2007-06-13 |
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