JPH0614429U - Partition structure of vehicle muffler - Google Patents

Partition structure of vehicle muffler

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Publication number
JPH0614429U
JPH0614429U JP5874292U JP5874292U JPH0614429U JP H0614429 U JPH0614429 U JP H0614429U JP 5874292 U JP5874292 U JP 5874292U JP 5874292 U JP5874292 U JP 5874292U JP H0614429 U JPH0614429 U JP H0614429U
Authority
JP
Japan
Prior art keywords
flange
partition
partition surface
press
outer cylinder
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
Application number
JP5874292U
Other languages
Japanese (ja)
Other versions
JP2529574Y2 (en
Inventor
功 広川
恵男 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yutaka Giken Co Ltd
Original Assignee
Yutaka Giken Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yutaka Giken Co Ltd filed Critical Yutaka Giken Co Ltd
Priority to JP5874292U priority Critical patent/JP2529574Y2/en
Publication of JPH0614429U publication Critical patent/JPH0614429U/en
Application granted granted Critical
Publication of JP2529574Y2 publication Critical patent/JP2529574Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

(57)【要約】 【目的】車両用マフラーの外筒に仕切板を圧入する際の
圧入荷重を軽減させると共に内部に作用する圧力に耐え
る仕切板構造を提供する。 【構成】仕切面4aの周囲に、仕切面に対し鈍角に屈折
させた屈折部4bを形成し該屈折部と連続して仕切面に
対し略直角に屈折させたフランジ4cを形成した屈折部
介在フランジ部Bと、フランジ4dを仕切面4aに対し
略直角に形成した直角フランジ部Cを交互に配置する。
屈折部介在フランジ部では屈折部によりバネ定数を低減
させて圧入荷重を軽減させ、直角フランジ部では仕切面
とフランジとの剛性により外筒との接触力を高い状態に
維持する。
(57) [Abstract] [Purpose] To provide a partition plate structure that reduces the press-fitting load when the partition plate is press-fitted into the outer cylinder of a vehicle muffler and withstands the pressure acting inside. A refraction portion interposing a refraction portion 4b refracted at an obtuse angle with respect to the partition surface 4a, and a flange 4c contiguous to the refraction portion and substantially refracted at a right angle to the partition surface. The flange portion B and the right-angled flange portion C formed by forming the flange 4d at substantially right angles to the partition surface 4a are alternately arranged.
The bending portion intervening flange portion reduces the spring constant by the bending portion to reduce the press-fitting load, and the right angle flange portion maintains a high contact force with the outer cylinder due to the rigidity between the partition surface and the flange.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は外筒に仕切板を圧入して構成される車両用マフラーの仕切板構造に関 するものである。 The present invention relates to a partition plate structure for a vehicle muffler configured by press-fitting a partition plate into an outer cylinder.

【0002】[0002]

【従来の技術】[Prior art]

車両用マフラーは外筒の内部に複数の仕切板を設けることで、該仕切板と外筒 とによって複数の膨張室を形成して構成されている。そして導入管によって導入 された排気ガスを各膨張室で順次膨張させることで消音させ、その後、排気ガス を排気管から大気中に排出している。 The vehicle muffler is configured by providing a plurality of partition plates inside the outer cylinder, and forming a plurality of expansion chambers by the partition plates and the outer cylinder. The exhaust gas introduced through the inlet pipe is expanded in each expansion chamber in order to silence the exhaust gas, and then the exhaust gas is discharged into the atmosphere through the exhaust pipe.

【0003】 車両用マフラーに於ける消音機能を効率良く発揮させるためには、外筒内の予 め設定された位置に仕切板を正確に配置すると共に、該位置を保持し得るように 構成することが必要である。このため、図5に示すように、仕切面52の周囲に該 仕切面51に対し略直角に屈折させたフランジ53を有する仕切板51を用い、この仕 切板51を外筒54の内部に圧入してフランジ53を外筒54の内面に密着させることで 、仕切板51を所定の配置位置に保持すると共に所定の部屋割りを行うように構成 した車両用マフラーがある。このような車両用マフラーでは外筒の内周の形状, 寸法及び仕切板の周の形状,寸法は、予め設定された締め代を持って正確に形成 されている。[0003] In order to efficiently exhibit the sound deadening function in the vehicle muffler, the partition plate is accurately arranged at a preset position in the outer cylinder, and is configured to be able to maintain the position. It is necessary. Therefore, as shown in FIG. 5, a partition plate 51 having a flange 53 that is bent around the partition surface 52 at a right angle to the partition surface 51 is used, and the partition plate 51 is provided inside the outer cylinder 54. There is a vehicle muffler configured to press-fit and bring the flange 53 into close contact with the inner surface of the outer cylinder 54 to hold the partition plate 51 in a predetermined arrangement position and perform a predetermined room division. In such a vehicle muffler, the shape and size of the inner circumference of the outer cylinder and the shape and size of the circumference of the partition plate are accurately formed with a preset tightening margin.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

然し、上記車両用マフラーでは、フランジを外筒に密着させるために充分な締 め代を設けて圧入した場合、圧入に要する荷重(圧入荷重)が極めて高くなり、 圧入時に仕切板が変形して消音機能が損なわれる虞がある。またフランジと外筒 との間に齧りが発生し、該齧りによって錆が発生する虞がある。 However, in the above vehicle muffler, if the flange is pressed into the outer cylinder with sufficient tightening allowance, the load required for press fitting (press fit load) becomes extremely high, and the partition plate deforms during press fitting. The muffling function may be impaired. Further, there is a risk that a dent will occur between the flange and the outer cylinder, and that rust will cause rust.

【0005】 また高い圧入荷重を必要とするため、圧入速度が遅くなって作業能率を向上さ せることが出来ないという問題がある。Further, since a high press-fitting load is required, there is a problem that the press-fitting speed becomes slow and the working efficiency cannot be improved.

【0006】 本考案の目的は、圧入荷重を軽減させて作業能率を向上させると共に、内部に 作用する圧力に耐え得る強度を有する車両用マフラーの仕切板構造を提供せんと するものである。An object of the present invention is to provide a partition plate structure for a vehicle muffler that has a strength that can withstand a pressure acting on the inside while reducing a press-fitting load to improve work efficiency.

【0007】[0007]

【課題を解決するための手段】[Means for Solving the Problems]

上記課題を解決するために本考案に係る車両用マフラーの仕切板構造は、仕切 面と該仕切面に対し略直角に形成されたフランジとからなり、外筒の内部に圧入 されて該外筒の内部を複数の室に仕切る車両用マフラーの仕切板構造であって、 仕切面とフランジとの間に仕切面に対し鈍角に屈折させた屈折部を介在させた屈 折部介在フランジ部と、フランジを仕切面に対し略直角に屈折させた直角フラン ジ部とを有し、仕切面の周囲に前記屈折部介在フランジ部と前記直角フランジ部 とを交互に配置したものである。 In order to solve the above-mentioned problems, a partition plate structure for a vehicle muffler according to the present invention comprises a partition surface and a flange formed at a substantially right angle to the partition surface, and is press-fitted into the outer tube to be fitted into the outer tube. A partition plate structure of a vehicle muffler for partitioning the inside of a partition into a plurality of chambers, in which a bending section intervening flange section in which a refraction section refracted at an obtuse angle with the partition surface is interposed between the partition surface and the flange, The flange has a right-angled flange portion that is bent substantially at right angles to the partition surface, and the bent portion and the right-angled flange portion are alternately arranged around the partition surface.

【0008】[0008]

【作用】[Action]

上記車両用マフラー(以下『マフラー』という)の仕切板構造によれば、圧入 荷重を軽減させると共に、内部に作用する圧力に耐え得る強度を保持することが 出来る。即ち、仕切面の周囲に、該仕切面に対し鈍角に屈折させた屈折部を介在 させた屈折部介在フランジ部と、フランジを仕切面に対し略直角に屈折させた直 角フランジ部を交互に配置したので、屈折部介在フランジ部では、バネ定数を小 さくすることが出来、このため、仕切板の圧入に要する圧入荷重を小さくするこ とが出来る。 According to the partition plate structure of the vehicle muffler (hereinafter referred to as “muffler”), the press-fitting load can be reduced and the strength that can withstand the pressure acting on the inside can be maintained. That is, around the partition surface, a bending portion intervening flange portion in which a bending portion that is refracted at an obtuse angle with respect to the partition surface is interposed, and a rectangular flange portion where the flange is bent substantially at right angles to the partition surface are alternated. Since they are arranged, the spring constant can be made small in the bending portion intervening flange portion, and therefore the press-fitting load required for press-fitting the partition plate can be made small.

【0009】 また直角フランジ部では、フランジと外筒との摩擦力を充分に大きい値に維持 することが出来、このため、外筒の内部に形成された部屋に作用する排気ガスの 圧力に耐えると共に圧入位置を維持することが出来る。Further, in the right-angled flange portion, the frictional force between the flange and the outer cylinder can be maintained at a sufficiently large value, so that the exhaust gas pressure acting on the chamber formed inside the outer cylinder can be withstood. At the same time, the press-fitting position can be maintained.

【0010】[0010]

【実施例】 以下上記マフラーの仕切板構造の一実施例について図を用いて説明する。図1 は仕切板の正面図、図2は図1のイ−イ断面図、図3は図1のロ−ロ断面図、図 4はマフラーの模式断面図である。Embodiment An embodiment of the partition plate structure of the muffler will be described below with reference to the drawings. 1 is a front view of the partition plate, FIG. 2 is a sectional view taken along the line ii of FIG. 1, FIG. 3 is a sectional view taken along the line of FIG. 1, and FIG. 4 is a schematic sectional view of the muffler.

【0011】 先ず、図4によりマフラーAの概略構成について説明する。マフラーAは、円 筒形,角筒形、楕円筒形等所望の形状に形成された外筒1に複数の仕切板2〜4 が圧入され、外筒1の両端を閉塞する面板1a,1b及び仕切板2〜4によって 複数の膨張室5〜8が形成されている。面板1a,1b及び仕切板2〜4の所定 位置には複数の膨張室5〜8を連通する連通管9〜13が配置されている。上記構 成に於いて、排気ガスは連通管9を通してマフラーAに導入され、該マフラーA で消音された後、連通管13を通して大気中に排気される。このマフラーAは適用 すべきエンジンの仕様及び車両の仕様に対応して設計される。従って、外筒1の 形状及び寸法等の仕様はマフラーAが設計された時点で設定される。First, the schematic configuration of the muffler A will be described with reference to FIG. In the muffler A, a plurality of partition plates 2 to 4 are press-fitted into an outer cylinder 1 formed in a desired shape such as a cylindrical shape, a rectangular cylinder shape, an elliptic cylinder shape, and face plates 1a and 1b for closing both ends of the outer cylinder 1. The partition plates 2 to 4 form a plurality of expansion chambers 5 to 8. Communication pipes 9 to 13 for connecting the plurality of expansion chambers 5 to 8 are arranged at predetermined positions of the face plates 1a and 1b and the partition plates 2 to 4. In the above structure, the exhaust gas is introduced into the muffler A through the communication pipe 9, is silenced by the muffler A, and is then exhausted into the atmosphere through the communication pipe 13. This muffler A is designed according to the specifications of the engine and vehicle to be applied. Therefore, specifications such as the shape and size of the outer cylinder 1 are set when the muffler A is designed.

【0012】 以下、仕切板2〜4を代表して仕切板4の構造について図1〜図3を用いて説 明する。本実施例に於いて、マフラーAの断面は楕円形に形成されており、仕切 板4も同様に楕円形に形成されている。The structure of the partition plate 4 will be described below with reference to FIGS. 1 to 3 as a representative of the partition plates 2 to 4. In this embodiment, the muffler A has an oval cross section, and the partition plate 4 has an oval shape as well.

【0013】 仕切板4は外筒1の内部に圧入されるものであり、該仕切板4の平面的な輪郭 は外筒1の内周の形状と略一致した形状を有しており、また予め所定の締め代が 設定され、設定された締め代に応じてフランジ部分の周長が設定される。この締 め代は外筒1の形状,寸法に応じて適切な値が設定される。従来のマフラーでは 外筒の内周長に1mmの締め代を付加するようにしたものが多い。The partition plate 4 is press-fitted into the outer cylinder 1, and the planar contour of the partition plate 4 has a shape that substantially matches the shape of the inner circumference of the outer cylinder 1. A predetermined tightening margin is set in advance, and the circumferential length of the flange portion is set according to the set tightening margin. This tightening margin is set to an appropriate value according to the shape and size of the outer cylinder 1. Most conventional mufflers have a 1mm tightening margin added to the inner circumference of the outer cylinder.

【0014】 仕切面4aの周囲には、図2に示す仕切面4aに対し鈍角に屈折させた屈折部 4bを形成すると共に該屈折部4bと連続して仕切面4aに対し略直角に屈折さ せたフランジ4cを形成した屈折部介在フランジ部Bと、図3に示す仕切面4a に対し略直角に屈折させたフランジ4dを形成した直角フランジ部Cが交互に配 置されている。Around the partition surface 4a, there is formed a refraction portion 4b which is refracted at an obtuse angle with respect to the partition surface 4a shown in FIG. The bent portion intervening flange portion B formed with the raised flange 4c and the right-angled flange portion C formed with the flange 4d bent substantially at right angles to the partition surface 4a shown in FIG. 3 are alternately arranged.

【0015】 仕切面4aに対する屈折部介在フランジ部Bと直角フランジ部Cの位置は特に 限定するものではない。然し、楕円形断面のマフラーAでは、圧入荷重は主とし て小半径部4eに依存するため、本実施例では小半径部4eに対応する仕切面4 aの周囲に屈折部介在フランジ部Bを配置すると共に、大半径部4fに対応する 仕切面4aの周囲に直角フランジ部Cを配置している。The positions of the bent portion intervening flange portion B and the right-angled flange portion C with respect to the partition surface 4a are not particularly limited. However, in the muffler A having an elliptical cross section, the press-fitting load mainly depends on the small radius portion 4e. Therefore, in this embodiment, the bending portion intervening flange portion B is provided around the partition surface 4a corresponding to the small radius portion 4e. The right-angled flange portion C is disposed around the partition surface 4a corresponding to the large radius portion 4f.

【0016】 本実施例に於いて、屈折部介在フランジ部Bに於ける仕切面4aと屈折部4b とのなす角は約 110度に設定されており、且つ外筒1の内周長に対し1mmの締め 代が設定されている。このように構成された屈折部介在フランジ部Bでは、屈折 部4bの介在によって、仕切面4aからフランジ4cに至る部位に於けるバネ定 数を減少させることが可能である。即ち、仕切面4aからフランジ4cに至る部 位の剛性を低減させて可撓性を付与することが可能である。従って、外筒1に仕 切板4を圧入しても剛性の高い仕切面4aが直接外筒1と接触することがなく、 圧入する際の圧入荷重を軽減することが可能となる。In the present embodiment, the angle formed by the partition surface 4a and the bending portion 4b in the bending portion intervening flange portion B is set to about 110 degrees, and with respect to the inner peripheral length of the outer cylinder 1. A tightening margin of 1 mm is set. In the bending portion intervening flange portion B thus configured, the bending constant 4b is interposed so that the spring constant at the portion from the partition surface 4a to the flange 4c can be reduced. That is, it is possible to reduce the rigidity of the portion from the partition surface 4a to the flange 4c to provide flexibility. Therefore, even if the partition plate 4 is press-fitted into the outer cylinder 1, the highly rigid partition surface 4a does not directly contact the outer cylinder 1, and the press-fitting load at the time of press-fitting can be reduced.

【0017】 直角フランジ部Cでは、仕切面4aに対しフランジ4dを略直角に屈折してい ることから、該屈折部に於ける剛性が高い。このため、フランジ4dと外筒1の 内面との接触強度を高い状態で維持することが可能であり、マフラーAの内部に 排気ガスの圧力が作用しても、この圧力によって仕切板4の圧入位置が変化する ことがない。In the right-angled flange portion C, since the flange 4d is bent substantially at right angles to the partition surface 4a, the rigidity of the bent portion is high. Therefore, the contact strength between the flange 4d and the inner surface of the outer cylinder 1 can be maintained in a high state, and even if the exhaust gas pressure acts on the inside of the muffler A, the pressure of the partition plate 4 is pressed by this pressure. The position does not change.

【0018】 上記の如く仕切面4aの周囲に屈折部介在フランジ部Bと直角フランジ部Cを 交互に配置することで、圧入荷重を軽減させると共に、マフラーAの内部に作用 する排気ガスの圧力に耐えて仕切板4を所定の位置に維持し得る強度を発揮する ことが可能である。By alternately arranging the bent portion intervening flange portion B and the right-angled flange portion C around the partition surface 4a as described above, the press-fitting load is reduced and the exhaust gas pressure acting on the inside of the muffler A is reduced. It is possible to endure and exert the strength capable of maintaining the partition plate 4 in a predetermined position.

【0019】 前述の実施例に於いて、仕切板4(2〜4)の周囲に配置した屈折部介在フラ ンジ部Bに於ける屈折部4bの仕切面4aに対する角度及び径方向の長さは特に 限定するものではない。即ち、屈折部4bの形状は屈折部介在フランジBに於け るバネ定数を低減させ、且つ仕切面4aが直接外筒1の内周面と接触する虞のな い角度及び長さであれば良い。In the above-mentioned embodiment, the angle and the radial length of the refraction part 4b in the refraction part intervening flange part B arranged around the partition plate 4 (2-4) with respect to the partition surface 4a are as follows. It is not particularly limited. That is, if the shape of the bending portion 4b is such that the spring constant in the bending portion intervening flange B is reduced, and the partition surface 4a does not come into direct contact with the inner peripheral surface of the outer cylinder 1, the angle and the length are long. good.

【0020】[0020]

【考案の効果】[Effect of device]

以上詳細に説明したように本考案に係る車両用マフラーの仕切板構造によれば 、仕切面の周囲に、該仕切面に対し鈍角に屈折させた屈折部を介在させた屈折部 介在フランジ部と、フランジを仕切面に対し略直角に屈折させた直角フランジ部 を交互に配置したので、屈折部介在フランジ部のバネ定数を小さくすることが出 来る。このため、仕切板の圧入に要する圧入荷重を小さくすることが出来る。 As described above in detail, according to the partition plate structure for a vehicle muffler of the present invention, a refraction portion intervening flange portion in which a refraction portion refracted at an obtuse angle with respect to the partition surface is provided around the partition surface. Since the right-angled flanges, which are bent at right angles to the partition surface, are arranged alternately, it is possible to reduce the spring constant of the intervening flanges of the bending part. Therefore, the press-fitting load required for press-fitting the partition plate can be reduced.

【0021】 また直角フランジ部では、フランジと外筒との摩擦力を充分に大きい値に維持 することが可能である。このため、外筒の内部に形成された部屋に作用する排気 ガスの圧力に耐えると共に圧入位置を維持することが出来る等の特徴を有するも のである。Further, in the right-angled flange portion, the frictional force between the flange and the outer cylinder can be maintained at a sufficiently large value. Therefore, it has the features that it can withstand the pressure of the exhaust gas acting on the chamber formed inside the outer cylinder and can maintain the press-fitting position.

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

【図1】仕切板の正面図である。FIG. 1 is a front view of a partition plate.

【図2】図1のイ−イ断面図である。2 is a cross-sectional view taken along the line EE of FIG.

【図3】図1のロ−ロ断面図である。FIG. 3 is a cross-sectional view taken along the line of FIG.

【図4】マフラーの模式断面図である。FIG. 4 is a schematic cross-sectional view of a muffler.

【図5】従来のマフラーの仕切板構造の要部拡大図であ
る。
FIG. 5 is an enlarged view of a main part of a conventional partition plate structure of a muffler.

【符号の説明】[Explanation of symbols]

A マフラー B 屈折部介在フランジ部 C 直角フランジ部 1 外筒 2〜4 仕切板 4a 仕切面 4b 屈折部 4c,4d フランジ 4e 小半径部 4f 大半径部 5〜8 室 9〜13 連通管 A Muffler B Refraction part intervening flange part C Right angle flange part 1 Outer cylinder 2-4 Partition plate 4a Partition surface 4b Refraction part 4c, 4d Flange 4e Small radius part 4f Large radius part 5-8 Chamber 9-13 Communication pipe

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 仕切面と該仕切面に対し略直角に形成さ
れたフランジとからなり、外筒の内部に圧入されて該外
筒の内部を複数の室に仕切る車両用マフラーの仕切板構
造であって、仕切面とフランジとの間に仕切面に対し鈍
角に屈折させた屈折部を介在させた屈折部介在フランジ
部と、フランジを仕切面に対し略直角に屈折させた直角
フランジ部とを有し、仕切面の周囲に前記屈折部介在フ
ランジ部と前記直角フランジ部とを交互に配置したこと
を特徴とした車両用マフラーの仕切板構造。
1. A partition plate structure for a vehicle muffler, which comprises a partition surface and a flange formed substantially at right angles to the partition surface, and is press-fitted into the outer cylinder to partition the interior of the outer cylinder into a plurality of chambers. In addition, between the partition surface and the flange, a refraction portion intervening flange portion in which a refraction portion refracted at an obtuse angle with respect to the partition surface is interposed, and a right-angled flange portion in which the flange is bent substantially at right angles to the partition surface. And a partition plate structure for a vehicle muffler, characterized in that the bending portion intervening flange portion and the right-angled flange portion are alternately arranged around the partition surface.
JP5874292U 1992-07-30 1992-07-30 Partition structure of muffler for vehicle Expired - Lifetime JP2529574Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5874292U JP2529574Y2 (en) 1992-07-30 1992-07-30 Partition structure of muffler for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5874292U JP2529574Y2 (en) 1992-07-30 1992-07-30 Partition structure of muffler for vehicle

Publications (2)

Publication Number Publication Date
JPH0614429U true JPH0614429U (en) 1994-02-25
JP2529574Y2 JP2529574Y2 (en) 1997-03-19

Family

ID=13092987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5874292U Expired - Lifetime JP2529574Y2 (en) 1992-07-30 1992-07-30 Partition structure of muffler for vehicle

Country Status (1)

Country Link
JP (1) JP2529574Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006189007A (en) * 2005-01-07 2006-07-20 Sankei Giken Kogyo Co Ltd Muffler for engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006189007A (en) * 2005-01-07 2006-07-20 Sankei Giken Kogyo Co Ltd Muffler for engine
JP4576239B2 (en) * 2005-01-07 2010-11-04 三恵技研工業株式会社 Engine muffler

Also Published As

Publication number Publication date
JP2529574Y2 (en) 1997-03-19

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