JP4432705B2 - Exhaust system support device - Google Patents

Exhaust system support device Download PDF

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JP4432705B2
JP4432705B2 JP2004284456A JP2004284456A JP4432705B2 JP 4432705 B2 JP4432705 B2 JP 4432705B2 JP 2004284456 A JP2004284456 A JP 2004284456A JP 2004284456 A JP2004284456 A JP 2004284456A JP 4432705 B2 JP4432705 B2 JP 4432705B2
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exhaust system
support device
support
exhaust
pipe
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JP2006097560A (en
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祐也 今川
昌夫 戸井
康彦 香田
一晃 杉
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Toyota Motor Corp
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Toyota Motor Corp
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本発明は排気系支持装置に関する。   The present invention relates to an exhaust system support device.

従来、エンジンなどの動力源を搭載した車両の排気系は、排気系に設けられた支持装置により車体に懸垂されている。この支持装置と車体との間には、ゴム等の弾性部材が介在されており、排気系に伝わるエンジン振動を該弾性部材で吸収し、車体へのエンジン振動の伝達を抑制している。   Conventionally, an exhaust system of a vehicle equipped with a power source such as an engine is suspended from a vehicle body by a support device provided in the exhaust system. An elastic member such as rubber is interposed between the support device and the vehicle body, and the engine vibration transmitted to the exhaust system is absorbed by the elastic member to suppress transmission of the engine vibration to the vehicle body.

このような排気系支持装置として、従来、一本の金属製の棒材を曲折して車体に弾性部材を介して接続される懸垂部と、排気系に接合される基部とを形成した支持装置が提案されている。（特許文献１，２参照）。
特開２０００−２１１３号公報 特開２００３−１２０２８２号公報 Conventionally, as such an exhaust system support device, a support device in which a metal bar is bent and connected to the vehicle body via an elastic member and a base portion joined to the exhaust system is formed. Has been proposed. (See Patent Documents 1 and 2).
JP 2000-2113 A JP 2003-120282 A

上記特許文献１及び２に記載の支持装置によれば、排気系を支持する金属製の棒材は比較的細いものであり、任意形状に形成し易く、また、安価に製造できるメリットがある。しかし、強度や剛性を向上させることは困難であり、エンジンから排気系に伝達された振動が、剛性の低い該支持装置を介して車体に伝達されると、低周波数の振動伝達により車内にこもり音が発生する問題があった。そのため、排気系支持装置には、排気系を長期に渡って支持するために強度や耐久性が要求され、更に、支持装置の剛性をより高くし共振周波数を高くすることによって、車内のこもり音の発生原因である低周波数の振動が車体に伝達され難くすることが要求されている。   According to the supporting devices described in Patent Documents 1 and 2, the metal bar material that supports the exhaust system is relatively thin, and can be easily formed into an arbitrary shape, and can be manufactured at low cost. However, it is difficult to improve the strength and rigidity, and when vibration transmitted from the engine to the exhaust system is transmitted to the vehicle body via the support device having low rigidity, the vibration is lodged in the vehicle by low-frequency vibration transmission. There was a problem with sound. For this reason, the exhaust system support device is required to have strength and durability to support the exhaust system for a long period of time. Furthermore, by increasing the rigidity of the support device and the resonance frequency, Therefore, it is required to make it difficult for low-frequency vibrations, which are the cause of the occurrence, to be transmitted to the vehicle body.

そこで本発明は上記の問題を解決することができる排気系の支持装置を提案することを目的とするものである。   Accordingly, an object of the present invention is to propose an exhaust system support device that can solve the above-described problems.

前記課題を解決するために、請求項１記載の発明は、金属製の棒材を曲折して形成するとともに弾性部材を介して排気系を車体に支持するための排気系支持装置であって、排気系における排気管の外周に沿うように湾曲し、排気管に溶接される第１基部と該第１基部から延設されるとともに弾性部材に接続される懸垂部とを備えた第１支持部材と、前記排気管の外周に沿うように湾曲し、排気管に溶接される第２基部と該第２基部から延設されるとともに前記懸垂部に溶接される補強部とを備える第２支持部材とからなる排気系支持装置である。 In order to solve the above problems, the invention according to claim 1 is an exhaust system support device for bending a metal bar and supporting the exhaust system on a vehicle body via an elastic member. and curved along the outer periphery of the definitive in the exhaust system the exhaust pipe, a first support comprising a suspension unit connected to the elastic member with extending from the first base and first base are welded to the exhaust pipe A second support that includes a member, a second base that is curved along the outer periphery of the exhaust pipe, is welded to the exhaust pipe, and a reinforcement is provided that extends from the second base and is welded to the suspension part. An exhaust system support device comprising members.

本発明においては、第１支持部材と第２支持部材の各基部が排気系に接合され、かつ、第２支持部材の補強部が第１支持部材の懸垂部に接合されているため、第１支持部材の懸垂部の強度が向上し、更には、第１支持部材と第２支持部材の２本の棒材が互いを支えあうことで、支持装置全体の強度と耐久性も向上する。これにより、支持装置全体の剛性を向上することができる。   In the present invention, each base portion of the first support member and the second support member is joined to the exhaust system, and the reinforcing portion of the second support member is joined to the suspension portion of the first support member. The strength of the suspension portion of the support member is improved, and further, the strength and durability of the entire support device are improved by the two bars of the first support member and the second support member supporting each other. Thereby, the rigidity of the whole support apparatus can be improved.

請求項２の発明は、請求項１の発明において、金属製の棒材をパイプ状の棒材としたことを特徴とするものである。   The invention of claim 2 is characterized in that, in the invention of claim 1, the metal bar is a pipe-like bar.

本発明においては、中空状の金属製のパイプを使用することで、支持装置の重量を軽くすることができる。   In the present invention, the weight of the support device can be reduced by using a hollow metal pipe.

請求項１記載の発明によれば、支持装置の剛性の向上によって、共振周波数を高くすることができ、低周波数の振動が、この支持装置を介して車体に伝わり難くなり、車内でのこもり音を抑制することができる。   According to the first aspect of the present invention, the resonance frequency can be increased by improving the rigidity of the support device, and low-frequency vibrations are difficult to be transmitted to the vehicle body via the support device. Can be suppressed.

請求項２記載の発明によれば、中空状である金属製のパイプ状の棒材は、中実状のものより重量が軽いため共振周波数を高くすることができる。そのため、この支持装置を介して車体に伝わるこもり音を一層抑制することができる。   According to the second aspect of the present invention, the hollow metal pipe-like bar is lighter in weight than the solid metal bar, so that the resonance frequency can be increased. Therefore, it is possible to further suppress the booming noise transmitted to the vehicle body via the support device.

本発明を実施するための最良の形態を図に示す実施例に基づいて説明する。
図に示す実施例は、本発明の排気系支持装置を、排気系における排気管の支持に用いた例であり、基部側を排気管４に接合した支持装置１を、車体側に設けた弾性部材５に連結して、排気管を懸垂状に支持するようにしたものである。 BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described based on an embodiment shown in the drawings.
The embodiment shown in the figure is an example in which the exhaust system support device of the present invention is used to support an exhaust pipe in an exhaust system, and a support device 1 having a base side joined to an exhaust pipe 4 is provided on the vehicle body side. The exhaust pipe is connected to the member 5 so as to be suspended.

支持装置１は、金属製のパイプ状の棒材を曲折して形成した第１支持部材２と、同様に金属製のパイプ状の棒材を曲折して形成した第２支持部材３からなる。   The support device 1 includes a first support member 2 formed by bending a metal pipe-shaped bar, and a second support member 3 formed by bending a metal pipe-shaped bar.

前記第１支持部材２は、排気管４の外周における一方の側Ａの周方向に沿うように湾曲した第１基部２ａと、該第１基部２ａから上方に、かつ、図２に示すように排気管４の他方の側Ｂに傾斜するとともに図３に示すように排気管４の軸方向に傾斜して延長した延長部２ｂと、該延長部２ｂの上端部から横方向（排気管の軸芯と直交する方向）に屈曲して直線状に形成した懸垂部２ｃとから形成されている。   The first support member 2 includes a first base portion 2a that is curved along the circumferential direction of one side A of the outer periphery of the exhaust pipe 4, and upward from the first base portion 2a, as shown in FIG. As shown in FIG. 3, an extension 2b that is inclined to the other side B of the exhaust pipe 4 and extended in the axial direction of the exhaust pipe 4, and a lateral direction (the axis of the exhaust pipe) from the upper end of the extension 2b. The suspension part 2c is formed in a straight line by bending in a direction perpendicular to the core.

前記第１支持部材２の下部に形成された第１基部２ａは、排気系の一部である排気管４に溶接Ｗ１により円弧状に接合されており、上部に形成された懸垂部２ｃの先端には、係止部２ｄが形成されている。該係止部２ｄは、その外周を先細状のテーパ面２ｅとし、後部に懸垂部２ｃの外径より大径の係止面２ｆを設けて形成されており、後述するように、該係止部２ｄを弾性部材５に挿通した後において、懸垂部２ｃが弾性部材５から脱落することを防止するようになっている。   The first base 2a formed at the lower part of the first support member 2 is joined to the exhaust pipe 4 which is a part of the exhaust system in an arc shape by welding W1, and the tip of the suspension part 2c formed at the upper part. Is formed with a locking portion 2d. The locking portion 2d is formed with a tapered tapered surface 2e at the outer periphery and a locking surface 2f having a diameter larger than the outer diameter of the suspension portion 2c at the rear portion. After the portion 2d is inserted into the elastic member 5, the suspension portion 2c is prevented from falling off the elastic member 5.

前記第２支持部材３は、排気管４の外周における他方の側Ｂ、すなわち、前記第１支持部材２の第１基部２ａと対向する側において、排気管４の外周の周方向に沿うように湾曲された第２基部３ａと、該第２基部３ａから上方に曲折されて延設された補強部３ｂとから形成されている。   The second support member 3 extends along the circumferential direction of the outer periphery of the exhaust pipe 4 on the other side B of the outer periphery of the exhaust pipe 4, that is, on the side facing the first base 2 a of the first support member 2. The second base portion 3a is curved, and the reinforcing portion 3b is bent upward from the second base portion 3a.

第２支持部材３の下部に形成された第２基部３ａは排気管４に溶接Ｗ２により円弧状に接合されており、第２支持部材３の補強部３ｂは第１支持部材２における懸垂部２ｃに、前記係止部２ｄと反対の側において溶接Ｗ３により接合されている。なお、この補強部３ｂの接合の位置は、該補強部３ｂと前記係止部２ｄとで弾性部材５を挟持できる位置に設定されている。   The second base portion 3a formed at the lower portion of the second support member 3 is joined to the exhaust pipe 4 in a circular arc shape by welding W2, and the reinforcing portion 3b of the second support member 3 is a suspended portion 2c in the first support member 2. In addition, it is joined by welding W3 on the side opposite to the locking portion 2d. The joining position of the reinforcing portion 3b is set at a position where the elastic member 5 can be sandwiched between the reinforcing portion 3b and the locking portion 2d.

弾性部材５はＥＰＤＭ（エチレンプロピレンゴム）等の弾性材で成形され、支持装置１と車体側の間に配置し、支持装置１を介して排気系を支持している。   The elastic member 5 is formed of an elastic material such as EPDM (ethylene propylene rubber), is disposed between the support device 1 and the vehicle body side, and supports the exhaust system via the support device 1.

該弾性部材５には、車体側取付穴５ａと支持装置側取付穴５ｂが形成されており、車体側取付穴５ａには、弾性部材５が車体側取付穴５ａの軸を中心として揺動するように、図示しない車体に設けられた金属製の棒材が挿通される。更に、支持装置側取付穴５ｂには、前記支持装置１における第１支持部材２の懸垂部２ｃが挿通され排気管４が第１支持部材２と弾性部材５を介して車体に支持されるようになっている。   The elastic member 5 is formed with a vehicle body side mounting hole 5a and a support device side mounting hole 5b. The elastic member 5 swings around the axis of the vehicle body side mounting hole 5a. In this manner, a metal bar provided on the vehicle body (not shown) is inserted. Further, the suspension portion 2c of the first support member 2 in the support device 1 is inserted into the support device side mounting hole 5b so that the exhaust pipe 4 is supported by the vehicle body via the first support member 2 and the elastic member 5. It has become.

以上のようであるから、取付けに際しては、弾性部材５を、その車体取付穴５ａに車体側の棒材を挿通し、また図２に示すように、排気管４に接合された支持装置１における第１支持部材２の係止部２ｄを弾性部材５の支持装置側取付穴５ｂに圧入的に挿通して反圧入側へ図２に示すように突出させる。この挿通により、第２支持部材３の補強部３ｂが第１支持部材２の懸垂部２ｃに接合されていることによって係止部２ｄと補強部３ｂが、弾性部材５の両端を挟み込み、懸垂部２ｃの車両幅方向の移動を規制することができる。これにより、支持装置１に排気管や消音器等の排気系を支持した際には排気系の車両幅方向の移動を規制することができる。したがって、この排気系が他の車両部品に干渉することを抑制できる。   As described above, when mounting, the elastic member 5 is inserted into the vehicle body mounting hole 5a through the bar on the vehicle body side, and as shown in FIG. 2, in the support device 1 joined to the exhaust pipe 4. The engaging portion 2d of the first support member 2 is press-fitted into the support device side mounting hole 5b of the elastic member 5 and protrudes to the counter press-fit side as shown in FIG. By this insertion, the reinforcing portion 3b of the second support member 3 is joined to the suspension portion 2c of the first support member 2, whereby the locking portion 2d and the reinforcement portion 3b sandwich the both ends of the elastic member 5, and the suspension portion The movement of 2c in the vehicle width direction can be restricted. Thereby, when an exhaust system such as an exhaust pipe or a silencer is supported by the support device 1, movement of the exhaust system in the vehicle width direction can be restricted. Therefore, this exhaust system can be prevented from interfering with other vehicle parts.

また、支持装置１を、第１支持部材２と第２支持部材３の２本の支持部材の各基部を排気管４に接合し、かつ、第２支持部材３の補強部３ｂを第１支持部材２の懸垂部２ｃに接合して３点支持構造に構成したので、懸垂部２ｃを含む支持装置１の強度と耐久性が向上する。このように、懸垂部２ｃを含む支持装置１全体の剛性を向上させることによって、支持装置１が緩やかに振動することを抑制し、共振周波数を高くすることができる。そのため車内こもり音の発生原因である低周波数の振動が車体に伝わり難くなり、低周波による車内のこもり音を抑制することができる。   Further, the support device 1 is configured such that the base portions of the two support members of the first support member 2 and the second support member 3 are joined to the exhaust pipe 4, and the reinforcing portion 3 b of the second support member 3 is first supported. Since it joined to the suspension part 2c of the member 2 and comprised in the 3 point | piece support structure, the intensity | strength and durability of the support apparatus 1 containing the suspension part 2c improve. As described above, by improving the rigidity of the entire support device 1 including the suspension portion 2c, it is possible to suppress the support device 1 from gently oscillating and to increase the resonance frequency. As a result, low-frequency vibration, which is the cause of the in-vehicle noise, is difficult to be transmitted to the vehicle body, and the in-vehicle noise due to the low frequency can be suppressed.

前記実施例では、第１支持部材２と第２支持部材３とを中空のパイプ状の棒材を用いて形成したが、中実状の棒材を用いてもよい。   In the said Example, although the 1st supporting member 2 and the 2nd supporting member 3 were formed using the hollow pipe-shaped bar, you may use a solid-shaped bar.

また、前記実施例では、第２支持部材３の補強部３ｂを第１支持部材２の懸垂部２ｃに接合したが、懸垂部２ｃと延長部２ｂの両方に接合してもよい。   Moreover, in the said Example, although the reinforcement part 3b of the 2nd support member 3 was joined to the suspension part 2c of the 1st support member 2, you may join to both the suspension part 2c and the extension part 2b.

また、前記実施例では、支持装置１を排気管４に直接溶接Ｗ１，Ｗ２により接合したが、ブラケットを介して接合してもよい。   Moreover, in the said Example, although the support apparatus 1 was joined to the exhaust pipe 4 directly by welding W1, W2, you may join via a bracket.

更に、前記実施例では排気管を支持する例を示したが、本発明の支持装置１を排気管に限らず、消音器や触媒コンバータなどの任意の排気系部品に接合して、排気系の支持に適用することができる   Furthermore, although the example which supports an exhaust pipe was shown in the said Example, not only an exhaust pipe but the support apparatus 1 of this invention is joined to arbitrary exhaust system components, such as a silencer and a catalytic converter, and an exhaust system is shown. Can be applied to support

本発明の支持装置の実施例を示す斜視図。The perspective view which shows the Example of the support apparatus of this invention. 本発明の支持装置に弾性部材を装着した正面図で図１の矢印Ｃ方向から見た図。The figure seen from the arrow C direction of FIG. 1 with the front view which mounted | wore the elastic member in the support apparatus of this invention. 本発明の支持装置に弾性部材を装着した側面図で図２の矢印Ｄ方向から見た図。The figure seen from the arrow D direction of FIG. 2 with the side view which mounted | wore the elastic member in the support apparatus of this invention. 本発明の支持装置に弾性部材を装着した上面図で図３の矢印Ｅ方向から見た図。The figure seen from the arrow E direction of FIG. 3 in the top view which mounted | wore the elastic member in the support apparatus of this invention.

符号の説明Explanation of symbols

１ 支持装置
２ 第１支持部材
２ａ 第１基部
２ｃ 懸垂部
３ 第２支持部材
３ａ 第２基部
３ｂ 補強部
５ 弾性部材
DESCRIPTION OF SYMBOLS 1 Support apparatus 2 1st support member 2a 1st base 2c Suspension part 3 2nd support member 3a 2nd base 3b Reinforcement part 5 Elastic member

Claims (2)

金属製の棒材を曲折して形成するとともに弾性部材を介して排気系を車体に支持するための排気系支持装置であって、排気系における排気管の外周に沿うように湾曲し、排気管に溶接される第１基部と該第１基部から延設されるとともに弾性部材に接続される懸垂部とを備えた第１支持部材と、前記排気管の外周に沿うように湾曲し、排気管に溶接される第２基部と該第２基部から延設されるとともに前記懸垂部に溶接される補強部とを備える第２支持部材とからなる排気系支持装置。 A discharge system supporting device for supporting the exhaust system to the vehicle body via an elastic member as to form by bending a metal rod, curved along the outer periphery of the exhaust pipe definitive in the exhaust system, the exhaust A first support member having a first base welded to the pipe and a suspension part extending from the first base and connected to the elastic member; and curved along the outer periphery of the exhaust pipe, An exhaust system support device comprising: a second base member welded to a pipe; and a second support member provided with a reinforcement portion extending from the second base portion and welded to the suspension portion. 前記金属製の棒材はパイプ状であることを特徴とする請求項１記載の排気系支持装置。 The exhaust system support device according to claim 1, wherein the metal bar has a pipe shape.
JP2004284456A 2004-09-29 2004-09-29 Exhaust system support device Expired - Fee Related JP4432705B2 (en)

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US11199121B2 (en) 2019-01-11 2021-12-14 Futaba Industrial Co., Ltd. Exhaust device

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KR100893659B1 (en) 2007-12-13 2009-04-17 현대자동차주식회사 Muffler for vehicle
US8794586B2 (en) 2010-09-02 2014-08-05 The Pullman Company Compact coulomb damper
US8794585B2 (en) * 2010-09-02 2014-08-05 The Pullman Company Compact coulomb damper
CN102287257A (en) * 2011-07-31 2011-12-21 重庆长安汽车股份有限公司 Double rear silencer pipeline connection member for automobile exhaust system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11199121B2 (en) 2019-01-11 2021-12-14 Futaba Industrial Co., Ltd. Exhaust device

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