JP6522994B2 - Silencer - Google Patents
Silencer Download PDFInfo
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- JP6522994B2 JP6522994B2 JP2015042042A JP2015042042A JP6522994B2 JP 6522994 B2 JP6522994 B2 JP 6522994B2 JP 2015042042 A JP2015042042 A JP 2015042042A JP 2015042042 A JP2015042042 A JP 2015042042A JP 6522994 B2 JP6522994 B2 JP 6522994B2
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- reinforcing member
- peripheral surface
- inner peripheral
- silencer
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- 230000003584 silencer Effects 0.000 title claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 58
- 230000002093 peripheral effect Effects 0.000 claims description 46
- 239000000463 material Substances 0.000 description 21
- 238000000926 separation method Methods 0.000 description 20
- 238000005192 partition Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Exhaust Silencers (AREA)
Description
本発明は、消音器に関する。 The present invention relates to a silencer.
自動車用の排気システムは、排気流路に設けられた消音器により、内燃機関から排出された排ガスによる騒音を抑制する。この種の消音器には、内燃機関からの熱衝撃に耐え得る剛性や強度が求められる。そこで、筒状に形成されたシェルの内周面の全周に沿った補強部材を設け、シェルの剛性及び強度を向上させる消音器が提案されている（特許文献１参照）。 The exhaust system for a motor vehicle suppresses the noise due to the exhaust gas discharged from the internal combustion engine by the silencer provided in the exhaust passage. This type of silencer is required to have rigidity and strength that can withstand thermal shock from the internal combustion engine. Then, the silencer which provides the reinforcement member in alignment with the perimeter of the inner peripheral surface of the shell formed cylindrically, and improves the rigidity and intensity | strength of a shell is proposed (refer patent document 1).
しかしながら、特許文献１に記載の消音器では、補強部材を設けたことにより、消音器の材料のコスト及び質量が増加してしまう問題があった。
本発明は、補強部材によってシェルの剛性及び強度を向上させつつ、シェルの内周面の全周に沿った補強部材を備えた消音器と比較して、材料のコスト及び質量の増加を抑制することが可能な消音器の提供を目的としている。
However, in the silencer described in Patent Document 1, there is a problem that the cost and the mass of the material of the silencer increase because the reinforcing member is provided.
The present invention suppresses the increase in cost and mass of material as compared to a silencer provided with reinforcing members along the entire circumference of the inner circumferential surface of the shell while improving the rigidity and strength of the shell by means of the reinforcing members. The purpose is to provide a silencer that can be
本発明の一側面は、消音器であって、シェルと、補強部材と、を備える。シェルは、筒状に形成される。補強部材は、シェルの内周面に沿ってシェルを内部から補強するように配置される。具体的には、補強部材の外周面には、内周面に対して当接する位置で対向する当接面と、内周面に対して離間する位置で対向する離間面と、が形成される。内周面における当接面と対向する部分は、シェルの軸方向から見た内周面の形状において曲率半径が最大となる部分を含む。内周面における離間面と対向する部分は、シェルの軸方向から見た内周面の形状において曲率半径が最小となる部分を含む。 One aspect of the present invention is a silencer, comprising a shell and a reinforcing member. The shell is formed in a tubular shape. The reinforcing member is arranged to internally reinforce the shell along the inner circumferential surface of the shell. Specifically, on the outer peripheral surface of the reinforcing member, an abutting surface opposed at a position abutting against the inner peripheral surface and a separating surface opposed at a position separated from the inner peripheral surface are formed. . The portion of the inner peripheral surface facing the contact surface includes the portion where the radius of curvature is the largest in the shape of the inner peripheral surface viewed from the axial direction of the shell. The portion of the inner peripheral surface opposite to the separation surface includes a portion where the radius of curvature is the smallest in the shape of the inner peripheral surface viewed from the axial direction of the shell.
このような構成によれば、補強部材の外周面の一部に、シェルの内周面に対して離間している箇所（離間面）が形成されるため、補強部材の外周面をシェルの内周面の全周に渡って当接させる場合と比較して、補強部材をより少ない材料で形成することができる。したがって、補強部材によってシェルの剛性及び強度を向上させつつ、材料のコスト及び質量の増加を抑制した消音器の提供が可能となる。 According to such a configuration, a part (separating surface) spaced apart from the inner peripheral surface of the shell is formed in a part of the outer peripheral surface of the reinforcing member. The reinforcing member can be formed of less material as compared with the case where the entire circumferential surface is in contact. Therefore, it is possible to provide a silencer in which the increase in cost and mass of the material is suppressed while the rigidity and strength of the shell are improved by the reinforcing member.
上記構成において、補強部材における離間面が平面であってもよい。このような構成によれば、離間面が湾曲している場合と比較して、補強部材をより少ない材料で形成することができる。 In the above configuration, the separation surface of the reinforcing member may be flat. According to such a configuration, it is possible to form the reinforcing member with less material as compared with the case where the separation surface is curved.
以下、本発明の例示的な実施形態について図面を参照しながら説明する。
［１．構成］
図１、図２及び図３に示す消音器１００は、車両に搭載された内燃機関（図示せず）から排出される排ガスの排気流路の一部を構成するものであり、シェル部材１と、前端板１２と、後端板１３と、インレットパイプ２と、アウトレットパイプ３と、前方仕切板４と、後方仕切板５と、補強部材６１と、を備える。なお、図２及び図３では、シェル部材１及び補強部材６１のみが示されており、インレットパイプ２等の図示は省略されている。
Hereinafter, exemplary embodiments of the present invention will be described with reference to the drawings.
[1. Constitution]
The silencer 100 shown in FIGS. 1, 2 and 3 constitutes a part of an exhaust flow path of exhaust gas discharged from an internal combustion engine (not shown) mounted on a vehicle, and A front end plate 12, a rear end plate 13, an inlet pipe 2, an outlet pipe 3, a front partition 4, a rear partition 5, and a reinforcing member 61. In addition, in FIG.2 and FIG.3, only the shell member 1 and the reinforcement member 61 are shown, and illustration of the inlet pipe 2 grade | etc., Is abbreviate | omitted.
シェル部材１は、楕円筒状に形成され、その両端開口部が前端板１２と後端板１３とにより閉塞されている。シェル部材１の内部は、前方仕切板４及び後方仕切板５により第１室１１１、第２室１１２及び第３室１１３に区画されている。 The shell member 1 is formed in an elliptical cylindrical shape, and both end openings are closed by the front end plate 12 and the rear end plate 13. The inside of the shell member 1 is divided into a first chamber 111, a second chamber 112 and a third chamber 113 by the front partition 4 and the rear partition 5.
インレットパイプ２は、前端板１２、前方仕切板４、補強部材６１及び後方仕切板５にそれぞれ形成された貫通孔に挿通される。インレットパイプ２は、その下流側端部が第３室１１３に開口する。インレットパイプ２には、内燃機関からの排ガスが導入される。 The inlet pipe 2 is inserted into through holes respectively formed in the front end plate 12, the front partition 4, the reinforcing member 61 and the rear partition 5. The downstream end of the inlet pipe 2 opens into the third chamber 113. Exhaust gas from the internal combustion engine is introduced into the inlet pipe 2.
アウトレットパイプ３は、排ガスを車両外部へ排出する図示しないテールパイプに接続されている。アウトレットパイプ３は、前方仕切板４、補強部材６１、後方仕切板５及び後端板１３にそれぞれ形成された貫通孔に挿通される。アウトレットパイプ３は、その上流側端部が第１室１１１に開口する。 The outlet pipe 3 is connected to a tail pipe (not shown) that discharges the exhaust gas to the outside of the vehicle. The outlet pipe 3 is inserted into through holes respectively formed in the front partition 4, the reinforcing member 61, the rear partition 5 and the rear end 13. The upstream end of the outlet pipe 3 opens into the first chamber 111.
補強部材６１は、シェル部材１の内周面１ａに沿ってシェル部材１を内部から補強するように配置される。具体的には、補強部材６１は、筒状部６１０と、環状板部６１１と、を備える。筒状部６１０は、シェル部材１の内周面１ａと対向する外周面を形成する筒状の部分である。環状板部６１１は、筒状部６１０の両端開口部のうちの一方（この例では前方仕切板４側）から筒状部６１０の軸側（換言すればシェル部材１の軸側）へ、その軸に対して垂直に延びる板状の部分であって、全体として概略一定幅の環状に形成されている。筒状部６１０により形成される補強部材６１の外周面には、当接面６１２と、離間面６１３と、が形成されている。当接面６１２は、シェル部材１の内周面１ａに対して当接する位置で対向する面であり、対向する内周面１ａと同一形状の外周面を形成し、シェル部材１とスポット溶接等で接合されている。離間面６１３は、シェル部材１の軸方向と平行に、内周面１ａに対して離間する位置で対向する面であり、筒状部６１０の軸方向（換言すればシェル部材１の軸方向）から見て、シェル部材１の内周面に沿って互いに隣り合う当接面６１２の端部同士を直線状に連結する平面を形成する。 The reinforcing member 61 is arranged along the inner circumferential surface 1 a of the shell member 1 so as to reinforce the shell member 1 from the inside. Specifically, the reinforcing member 61 includes a cylindrical portion 610 and an annular plate portion 611. The cylindrical portion 610 is a cylindrical portion that forms an outer peripheral surface facing the inner peripheral surface 1 a of the shell member 1. The annular plate portion 611 extends from one of the two end openings of the cylindrical portion 610 (in this example, the front partition 4 side) to the shaft side of the cylindrical portion 610 (in other words, the axial side of the shell member 1) It is a plate-like portion extending perpendicularly to the axis, and is formed in an annular shape having a substantially constant width as a whole. A contact surface 612 and a separation surface 613 are formed on the outer peripheral surface of the reinforcing member 61 formed by the cylindrical portion 610. The contact surface 612 is a surface opposed to the inner peripheral surface 1a of the shell member 1 at a position where it abuts, and forms an outer peripheral surface having the same shape as the opposed inner peripheral surface 1a. It is joined by. The separation surface 613 is a surface facing in parallel to the axial direction of the shell member 1 and facing the inner circumferential surface 1a at a position separated from the inner circumferential surface 1a, and the axial direction of the cylindrical portion 610 As viewed from the above, a flat surface is formed which linearly connects the end portions of the abutting surfaces 612 adjacent to each other along the inner peripheral surface of the shell member 1.
シェル部材１の内周面１ａにおける当接面６１２と対向する部分である内周当接部Ａは、シェル部材１の軸方向から見た内周面１ａの形状（この例では楕円形状）において曲率半径が最大の最大曲率半径ｒ１となる部分を含む。シェル部材１の内周面１ａにおける離間面６１３と対向する部分である内周離間部Ｂは、シェル部材１の軸方向から見た内周面１ａの形状において曲率半径が最小の最小曲率半径ｒ２となる部分を含む。 The inner peripheral contact portion A, which is a portion facing the contact surface 612 in the inner peripheral surface 1a of the shell member 1, has a shape (elliptical shape in this example) of the inner peripheral surface 1a viewed from the axial direction of the shell member 1 It includes a portion where the curvature radius is the largest maximum curvature radius r1. An inner peripheral separation portion B which is a portion facing the separation surface 613 in the inner peripheral surface 1a of the shell member 1 has a minimum curvature radius r2 with the smallest curvature radius in the shape of the inner peripheral surface 1a viewed from the axial direction of the shell member 1 Including the part to be
つまり、補強部材６１は、シェル部材１の内周面１ａの全周に渡って当接するのではなく、全周のうちの一部に当接する。具体的には、補強部材６１は、シェル部材１の内周面１ａにおいて比較的曲率半径の大きい範囲に当接し、シェル部材１の内周面１ａにおいて比較的曲率半径の小さい範囲から離間する形状である。この例では、補強部材６１には、シェル部材１の内周面１ａのうち、その軸方向から見て楕円の短軸と交わる２点のそれぞれを含む２つの部分（２つの内周当接部Ａ）に対向する２つの当接面６１２と、楕円の長軸と交わる２点のそれぞれを含む２つの部分（２つの内周離間部Ｂ）に対向する２つの離間面６１３と、が形成されている。 That is, the reinforcing member 61 is not in contact with the entire circumference of the inner peripheral surface 1 a of the shell member 1 but is in contact with a part of the entire circumference. Specifically, the reinforcing member 61 is in contact with a range having a relatively large radius of curvature on the inner circumferential surface 1 a of the shell member 1 and is separated from the range having a relatively small radius of curvature on the inner circumferential surface 1 a of the shell member 1 It is. In this example, in the reinforcing member 61, two portions (two inner circumferential contact portions) of the inner circumferential surface 1a of the shell member 1 including two points intersecting with the minor axis of the ellipse when viewed from the axial direction A) two abutting surfaces 612 opposed to each other, and two separated surfaces 613 opposed to two portions (two inner circumferential separated portions B) including each of two points intersecting the long axis of the ellipse ing.
次に、補強部材６１の製造方法について説明する。
図４（Ａ）に示すように、補強部材６１は、１枚の板材６１ａから形成される。板材６１ａは、単一の金属板（例えばステンレス製の板）で形成されている。まず、板材６１ａの縁部を立ち上げる加工（例えば絞り加工）が行われる。具体的には、図４（Ｂ）に示すように、板材６１ａに垂直な方向に板材６１ａの縁部全体が立ち上げられ、箱材６１ｂが形成される。立ち上げられた箱材６１ｂの縁部の外周面は、筒状部６１０の外周面、すなわち当接面６１２及び離間面６１３となる。なお、箱材６１ｂには、当接面６１２及び離間面６１３に囲まれた平面部６１ｃが形成される。
Next, a method of manufacturing the reinforcing member 61 will be described.
As shown to FIG. 4 (A), the reinforcement member 61 is formed from the board | plate material 61a of 1 sheet. The plate 61a is formed of a single metal plate (for example, a plate made of stainless steel). First, processing (for example, drawing processing) is performed to raise the edge of the plate 61a. Specifically, as shown in FIG. 4B, the entire edge portion of the plate 61a is raised in the direction perpendicular to the plate 61a, and the box 61b is formed. The outer peripheral surface of the edge portion of the raised box member 61 b is the outer peripheral surface of the cylindrical portion 610, that is, the contact surface 612 and the separation surface 613. In addition, the flat part 61c enclosed by the contact surface 612 and the separation surface 613 is formed in the box material 61b.
続いて、図４（Ｃ）に示すように、箱材６１ｂの平面部６１ｃの中央が、当接面６１２及び離間面６１３の内周を縮小した形状に打ち抜かれ、残された平面部６１ｃによって環状板部６１１が形成される。このようにして、補強部材６１が完成する。 Subsequently, as shown in FIG. 4C, the center of the flat portion 61c of the box member 61b is punched into a shape in which the inner circumferences of the contact surface 612 and the separation surface 613 are reduced, and left by the flat portion 61c. An annular plate portion 611 is formed. Thus, the reinforcing member 61 is completed.
［２．効果］
以上詳述した本実施形態によれば、以下の効果が得られる。
（１ａ）本実施形態の消音器１００では、補強部材６１の外周面を形成する筒状部６１０に、シェル部材１の内周面１ａに対して当接する位置で対向する当接面６１２と、内周面１ａに対して離間する位置で対向する離間面６１３と、が形成される。内周面１ａにおける当接面６１２と対向する内周当接部Ａは、シェル部材１の軸方向から見た内周面１ａの形状において曲率半径が最大となる最大曲率半径ｒ１を含む。内周面１ａにおける離間面６１３と対向する内周離間部Ｂは、シェル部材１の軸方向から見た内周面１ａの形状において曲率半径が最小となる最小曲率半径ｒ２を含む。
[2. effect]
According to the embodiment described above, the following effects can be obtained.
(1a) In the silencer 100 of the present embodiment, an abutment surface 612 opposed to the cylindrical portion 610 forming the outer circumferential surface of the reinforcing member 61 at a position abutted against the inner circumferential surface 1 a of the shell member 1; An opposing separation surface 613 is formed at a position away from the inner circumferential surface 1 a. The inner peripheral contact portion A facing the contact surface 612 in the inner peripheral surface 1a includes the maximum curvature radius r1 at which the curvature radius is maximum in the shape of the inner peripheral surface 1a viewed from the axial direction of the shell member 1. The inner circumferential spaced portion B opposed to the spaced apart surface 613 in the inner circumferential surface 1 a includes the minimum radius of curvature r 2 at which the radius of curvature is minimum in the shape of the inner circumferential surface 1 a viewed from the axial direction of the shell member 1.
このような構成によれば、補強部材６１の筒状部６１０の一部に、シェル部材１の内周面１ａに対して離間している離間面６１３が形成されるため、補強部材６１の筒状部６１０をシェル部材１の内周面１ａの全周に渡って当接させる場合と比較して、補強部材６１をより少ない材料によって形成することができる。したがって、補強部材６１によってシェル部材１の剛性及び強度を向上させつつ、材料のコスト及び質量の増加を抑制した消音器１００の提供が可能となる。 According to such a configuration, the separation surface 613 which is separated from the inner peripheral surface 1 a of the shell member 1 is formed in a part of the cylindrical portion 610 of the reinforcement member 61. The reinforcing member 61 can be formed of a smaller amount of material as compared with the case where the protuberance 610 abuts the entire circumference of the inner circumferential surface 1 a of the shell member 1. Therefore, it is possible to provide the silencer 100 in which the increase in the cost and the mass of the material is suppressed while improving the rigidity and the strength of the shell member 1 by the reinforcing member 61.
（１ｂ）補強部材６１における離間面６１３は、平面を形成する。具体的には、当該平面は、筒状部６１０の軸方向から見て、シェル部材１の内周面に沿って互いに隣り合う当接面６１２の端部同士を直線状に連結する形状である。このような構成によれば、離間面６１３が湾曲している場合と比較して、補強部材６１をより少ない材料によって形成することができる。 (1b) The separation surface 613 of the reinforcing member 61 forms a flat surface. Specifically, the flat surface has a shape that linearly connects the end portions of the contact surfaces 612 adjacent to each other along the inner peripheral surface of the shell member 1 when viewed from the axial direction of the cylindrical portion 610. . According to such a configuration, it is possible to form the reinforcing member 61 with a smaller amount of material as compared to the case where the separation surface 613 is curved.
［３．比較例との対比］
以上のような効果について、図５に示す比較例の消音器２００と対比しつつ説明する。比較例の消音器２００は、実施形態の消音器１００と比較すると、図２等に示す形状の補強部材６１に代えて、図５に示す形状の補強部材６２を備える点で相違する。その他、基本的な構成は実施形態と同様であり、実施形態と共通する構成については、同一符号を用いて説明を省略する。
[3. Contrast with Comparative Example]
The effects as described above will be described in comparison with the silencer 200 of the comparative example shown in FIG. The silencer 200 of the comparative example is different from the silencer 100 of the embodiment in that a reinforcing member 62 having a shape shown in FIG. 5 is provided instead of the reinforcing member 61 having a shape shown in FIG. The other basic configuration is the same as that of the embodiment, and the description of the configuration common to the embodiment will be omitted using the same reference numerals.
比較例の補強部材６２は、筒状部及び環状板部を備える点は実施形態の補強部材６１と同様であるが、筒状部により形成される外周面の全域が、対向するシェル部材１の内周面１ａと同一形状である点で上記実施形態と相違する。このため、比較例の補強部材６２の外周面は、シェル部材１の内周面１ａに対してその全周に渡って当接する。つまり、比較例の補強部材６２の外周面には、当接面のみが形成され、離間面は形成されない。 The reinforcing member 62 of the comparative example is the same as the reinforcing member 61 of the embodiment in that the reinforcing member 62 of the comparative example includes the cylindrical portion and the annular plate portion, but the entire outer peripheral surface formed by the cylindrical portion It differs from the above embodiment in that it has the same shape as the inner circumferential surface 1a. For this reason, the outer circumferential surface of the reinforcing member 62 of the comparative example abuts on the inner circumferential surface 1 a of the shell member 1 over the entire circumference thereof. That is, only the contact surface is formed on the outer peripheral surface of the reinforcing member 62 of the comparative example, and the separation surface is not formed.
これに対し、実施形態の補強部材６１の外周面には、シェル部材１の内周面１ａに対して離間している離間面６１３が形成されている。具体的には、実施形態の補強部材６１の筒状部６１０は、比較例の補強部材６２の筒状部よりも周方向の長さが短い。したがって、実施形態の構成によれば、補強部材６１をより少ない材料によって形成することができる。 On the other hand, on the outer peripheral surface of the reinforcing member 61 of the embodiment, a separation surface 613 which is separated from the inner peripheral surface 1 a of the shell member 1 is formed. Specifically, the cylindrical portion 610 of the reinforcing member 61 of the embodiment has a circumferential length shorter than that of the cylindrical portion of the reinforcing member 62 of the comparative example. Therefore, according to the configuration of the embodiment, the reinforcing member 61 can be formed of less material.
［４．他の実施形態］
以上、本発明の実施形態について説明したが、本発明は、上記実施形態に限定されることなく、種々の形態を取り得ることは言うまでもない。
[4. Other embodiments]
As mentioned above, although embodiment of this invention was described, it can not be overemphasized that this invention can take a various form, without being limited to the said embodiment.
（２ａ）上記実施形態では、軸方向から見た内周面１ａの形状が楕円形状のシェル部材１を例示したが、シェル部材はこのような形状に限定されるものではない。シェル部材は、軸方向から見た内周面の形状が少なくとも２種類の曲率半径を有する形状であればよく、例えば卵形状でもよい。また、シェル部材の軸方向から見た内周面の形状が全周に渡って曲線状でなくてもよく、例えば一部が直線状となっていてもよい。なお、この場合、直線状の部分の曲率半径は無限大とする。 (2a) In the above embodiment, the shell member 1 in which the shape of the inner circumferential surface 1a viewed from the axial direction is an elliptical shape is exemplified, but the shell member is not limited to such a shape. The shell member may have any shape as long as the shape of the inner peripheral surface viewed from the axial direction has at least two types of curvature radius, and may be, for example, an egg shape. Moreover, the shape of the inner peripheral surface seen from the axial direction of a shell member may not be curvilinear over the perimeter, for example, one part may be linear. In this case, the curvature radius of the linear portion is infinite.
（２ｂ）上記実施形態では、シェル部材１の内周面１ａに対して当接する位置で対向する面である当接面６１２は、その全面が内周面１ａに対して厳密に接触している必要はない。例えば、当接面６１２と内周面１ａとの間に意図的な空間が設けられていない構成では、当接面６１２と内周面１ａとが当接している。 (2b) In the above embodiment, the entire surface of the abutting surface 612, which is the surface opposed to the position in contact with the inner peripheral surface 1a of the shell member 1, is strictly in contact with the inner peripheral surface 1a. There is no need. For example, in a configuration in which an intentional space is not provided between the contact surface 612 and the inner circumferential surface 1a, the contact surface 612 and the inner circumferential surface 1a are in contact.
（２ｃ）上記実施形態では、離間面６１３が、シェル部材１の軸方向と平行に、内周面１ａに対して離間する位置で対向する面である構成を例示したが、これに限定されるものではなく、離間面は、シェル部材の軸方向と平行でなくてもよい。 (2c) In the above embodiment, the configuration in which the separation surface 613 is a surface facing in parallel to the axial direction of the shell member 1 at a position away from the inner circumferential surface 1a is exemplified. Instead, the separation surface may not be parallel to the axial direction of the shell member.
（２ｄ）上記実施形態では、補強部材６１の製造方法として、板材６１ａを立ち上げる加工及び打ち抜く加工によって補強部材６１を形成する製造方法を例示したが、これに限定されるものではない。 (2d) In the above embodiment, as the method of manufacturing the reinforcing member 61, the manufacturing method of forming the reinforcing member 61 by work of raising the plate member 61a and punching is exemplified, but it is not limited thereto.
例えば、図６（Ａ）、図６（Ｂ）及び図６（Ｃ）に示す変形例では、曲げ加工によって補強部材６３を形成する。
図６（Ａ）に示すように、変形例における補強部材６３は、１枚の板材６３ａから形成される。板材６３ａは、単一の金属板（例えばステンレス製の板）で形成されている。
For example, in the modification shown in FIG. 6 (A), FIG. 6 (B) and FIG. 6 (C), the reinforcing member 63 is formed by bending.
As shown to FIG. 6 (A), the reinforcement member 63 in a modification is formed from the board | plate material 63a of 1 sheet. The plate member 63a is formed of a single metal plate (for example, a plate made of stainless steel).
まず、板材６３ａを曲げる加工が行われる。具体的には、図６（Ｂ）に示すように、板材６３ａの一部が残りの部分に対して垂直に折り曲げられることにより、Ｌ型アングル６３ｂが形成される。なお、Ｌ型アングル６３ｂには、第１の板部６３ｃと、第１の板部６３ｃと垂直な第２の板部６３ｄと、が形成される。 First, the plate 63a is bent. Specifically, as shown in FIG. 6B, the L-shaped angle 63b is formed by bending a part of the plate member 63a perpendicularly to the remaining part. The L-shaped angle 63b is formed with a first plate portion 63c and a second plate portion 63d perpendicular to the first plate portion 63c.
続いて、図６（Ｃ）に示すように、Ｌ型アングル６３ｂが環状に曲げられ、上記実施形態と同様の形状の補強部材６３が形成される。具体的には、Ｌ型アングル６３ｂの第１の板部６３ｃが筒状部６３０を形成し、第２の板部６３ｄが環状板部６３１を形成するように、Ｌ型アングル６３ｂの３箇所が曲げられるとともに当接面６３２が曲面となるように曲げられる。つまり、Ｌ型アングル６３ｂが曲げられることにより、第１の板部６３ｃの外周面が、２つの当接面６３２及び２つの離間面６３３となり、第２の板部６３ｄが環状板部６３１となる。なお、Ｌ型アングル６３ｂの両端部は、当接面６３２と離間面６３３とのそれぞれの終端部として、互いに当接する。このようにして、補強部材６３が完成する。 Subsequently, as shown in FIG. 6C, the L-shaped angle 63b is bent in an annular shape, and a reinforcing member 63 having the same shape as that of the above embodiment is formed. Specifically, three portions of the L-shaped angle 63 b are formed such that the first plate portion 63 c of the L-shaped angle 63 b forms the cylindrical portion 630 and the second plate portion 63 d forms the annular plate portion 631. It is bent so that the contact surface 632 is curved. That is, when the L-shaped angle 63 b is bent, the outer peripheral surface of the first plate portion 63 c becomes the two contact surfaces 632 and the two separation surfaces 633, and the second plate portion 63 d becomes the annular plate portion 631. . The end portions of the L-shaped angle 63 b abut each other as the respective end portions of the contact surface 632 and the separation surface 633. Thus, the reinforcing member 63 is completed.
このような製造方法によれば、板材６３ａの曲げ加工のみによって補強部材６３が形成されるため、板材を打ち抜く必要がなくなり、材料をスクラップにすることなく、補強部材６３を形成する材料の歩留まりを向上させることができる。なお、補強部材６３においてＬ型アングル６３ｂの両端部が互いに当接する位置は特に限定されない。例えば、Ｌ型アングルの両端部がそれぞれ同一の当接面における一部を形成し、それら両端部がその当接面において互いに当接していてもよい。この場合、両端部が互いに当接せずに離間していてもよい。つまり、シェル部材の軸方向から見た補強部材の全体形状がＯ型ではなくＣ型に形成されていてもよい。 According to such a manufacturing method, since the reinforcing member 63 is formed only by bending the plate member 63a, there is no need to punch out the plate member, and the yield of the material forming the reinforcing member 63 can be reduced without scraping the material. It can be improved. The positions at which both ends of the L-shaped angle 63b abut each other in the reinforcing member 63 are not particularly limited. For example, the ends of the L-shaped angle may each form part of the same abutment surface, and the ends may abut each other at the abutment surface. In this case, both ends may be separated without contacting each other. That is, the overall shape of the reinforcing member as viewed from the axial direction of the shell member may be formed to be C-shaped instead of O-shaped.
（２ｅ）上記実施形態では、単一の部品（金属板）で形成された補強部材６１を例示したが、これに限定されるものではなく、補強部材は複数の部品で形成されてもよい。
（２ｆ）上記実施形態では、インレットパイプ２及びアウトレットパイプ３が環状板部６１１よりも内側に配設され、補強部材６１がインレットパイプ２及びアウトレットパイプ３のいずれにも干渉していない構成を例示したが、これに限定されるものではない。例えば、補強部材６１がインレットパイプ２及びアウトレットパイプ３のうち少なくとも一方と干渉するように配設されていてもよい。この場合、補強部材６１がインレットパイプ２及びアウトレットパイプ３のうち少なくとも一方と一体で構成されていてもよい。
(2e) In the above embodiment, the reinforcing member 61 formed of a single component (metal plate) is illustrated, but the present invention is not limited to this, and the reinforcing member may be formed of a plurality of components.
(2f) In the above embodiment, the inlet pipe 2 and the outlet pipe 3 are disposed on the inner side of the annular plate portion 611, and the reinforcing member 61 does not interfere with any of the inlet pipe 2 and the outlet pipe 3 However, it is not limited to this. For example, the reinforcing member 61 may be disposed to interfere with at least one of the inlet pipe 2 and the outlet pipe 3. In this case, the reinforcing member 61 may be configured integrally with at least one of the inlet pipe 2 and the outlet pipe 3.
（２ｇ）上記実施形態では、筒状部６１０が環状板部６１１の外側を囲むように形成され、環状板部６１１に垂直な補強部材６１の断面の形状がＬ型である構成を例示したが、これに限定されるものではない。例えば、環状板部６１１の外側を囲む筒状部６１０のみでなく、環状板部６１１の内側も囲うように筒状部を更に設け、断面の形状がＵ型となる構成としてもよい。 (2g) In the above embodiment, the tubular portion 610 is formed to surround the outer side of the annular plate portion 611, and the cross-sectional shape of the reinforcing member 61 perpendicular to the annular plate portion 611 is L-shaped. Not limited to this. For example, a tubular portion may be further provided so as to surround not only the tubular portion 610 surrounding the outer side of the annular plate portion 611 but also the inner side of the annular plate portion 611, and the cross-sectional shape may be U-shaped.
（２ｈ）上記実施形態における１つの構成要素が有する機能を複数の構成要素として分散させたり、複数の構成要素が有する機能を１つの構成要素に統合したりしてもよい。また、上記実施形態の構成の少なくとも一部を、同様の機能を有する公知の構成に置き換えてもよい。また、上記実施形態の構成の一部を、課題を解決できる限りにおいて省略してもよい。また、上記実施形態の構成の少なくとも一部を、他の上記実施形態の構成に対して付加、置換等してもよい。なお、特許請求の範囲に記載の文言から特定される技術思想に含まれるあらゆる態様が本発明の実施形態である。 (2h) The function of one component in the above embodiment may be distributed as a plurality of components, or the function of a plurality of components may be integrated into one component. Further, at least a part of the configuration of the above embodiment may be replaced with a known configuration having the same function. Further, part of the configuration of the above embodiment may be omitted as long as the problem can be solved. In addition, at least a part of the configuration of the above-described embodiment may be added to or replaced with the configuration of the other above-described embodiment. In addition, all the aspects contained in the technical thought specified from the wording as described in a claim are embodiment of this invention.
１…シェル部材、１ａ…内周面、２…インレットパイプ、３…アウトレットパイプ、４…前方仕切板、５…後方仕切板、１２…前端板、１３…後端板、６１，６２…補強部材、６１ａ，６３ａ…板材、６１ｂ…箱材、６１ｃ…平面部、６３ｂ…Ｌ型アングル、６３ｃ…第１の板部、６３ｄ…第２の板部、１００，２００…消音器、１１１…第１室、１１２…第２室、１１３…第３室、６１０，６３０…筒状部、６１１，６３１…環状板部、６１２，６３２…当接面、６１３，６３３…離間面、６２０，６３０…筒状部、Ａ…内周当接部、Ｂ…内周離間部。 DESCRIPTION OF SYMBOLS 1 ... Shell member, 1a ... Inner peripheral surface, 2 ... Inlet pipe, 3 ... Outlet pipe, 4 ... Front partition plate, 5 ... Rear partition plate, 12 ... Front end plate, 13 ... Rear end plate, 61, 62 ... Reinforcement member 61a, 63a: plate material, 61b: box material, 61c: flat portion, 63b: L-shaped angle, 63c: first plate portion, 63d: second plate portion, 100, 200: silencer, 111: first portion Chamber 112 112 second chamber 113 third chamber 610 630 cylindrical portion 611 631 annular plate portion 612 632 abutment surface 613 633 spaced surface 620 630 630 cylinder -Shaped portion, A: inner circumferential contact portion, B: inner circumferential spaced portion.
Claims (3)
前記シェルの内周面に沿って前記シェルを内部から補強するように配置された補強部材と、
を備え、
前記補強部材は、前記シェルの内周面と対向する、前記補強部材の外周面を形成する筒状部と、前記筒状部の両端開口部の一方から前記筒状部の軸側へ、前記軸に対して垂直に延びる環状板部と、を備え、
前記外周面には、前記内周面に対して当接する位置で対向する当接面と、前記内周面に対して離間する位置で対向する離間面と、が形成され、
前記内周面における前記当接面と対向する部分は、前記シェルの軸方向から見た前記内周面の形状において曲率半径が最大となる部分を含み、
前記内周面における前記離間面と対向する部分は、前記シェルの軸方向から見た前記内周面の形状において曲率半径が最小となる部分を含む、消音器。 A cylindrically formed shell,
A reinforcing member arranged to internally reinforce the shell along an inner circumferential surface of the shell;
Equipped with
The reinforcing member faces the inner peripheral surface of the shell, and a cylindrical portion forming an outer peripheral surface of the reinforcing member and an opening on either end of the cylindrical portion toward the shaft of the cylindrical portion. And an annular plate portion extending perpendicularly to the axis;
The front Kigai circumferential surface, a contact surface facing in a position to abut against the inner circumferential surface, a spaced face to face at a position spaced apart from the said inner peripheral surface, it is formed,
The portion of the inner peripheral surface facing the contact surface includes a portion where the radius of curvature is largest in the shape of the inner peripheral surface viewed from the axial direction of the shell,
The silencer according to claim 1, wherein a portion of the inner circumferential surface facing the separated surface includes a portion having a minimum radius of curvature in a shape of the inner circumferential surface viewed from an axial direction of the shell.
前記離間面が平面である、消音器。 The silencer according to claim 1, wherein
A silencer, wherein the spaced surface is flat.
前記当接面は、前記シェルの周方向に沿って延びる形状である、消音器。 The silencer, wherein the abutment surface is shaped to extend along the circumferential direction of the shell.
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| JP2015042042A JP6522994B2 (en) | 2015-03-04 | 2015-03-04 | Silencer |
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| US7219764B1 (en) * | 2006-03-27 | 2007-05-22 | Heartthrob Exhaust Inc. | Exhaust muffler |
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