JP2877982B2 - Intake silencer - Google Patents
Intake silencerInfo
- Publication number
- JP2877982B2 JP2877982B2 JP11070791A JP11070791A JP2877982B2 JP 2877982 B2 JP2877982 B2 JP 2877982B2 JP 11070791 A JP11070791 A JP 11070791A JP 11070791 A JP11070791 A JP 11070791A JP 2877982 B2 JP2877982 B2 JP 2877982B2
- Authority
- JP
- Japan
- Prior art keywords
- intake duct
- duct member
- intake
- plate
- hole
- 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.)
- Expired - Fee Related
Links
- 230000003584 silencer Effects 0.000 title claims description 25
- 239000011358 absorbing material Substances 0.000 claims description 16
- 230000008961 swelling Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1277—Reinforcement of walls, e.g. with ribs or laminates; Walls having air gaps or additional sound damping layers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Exhaust Silencers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は車両用エンジンの吸気系
に設けられる吸気消音装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake silencer provided in an intake system of a vehicle engine.
【０００２】[0002]
【従来技術】自動車、自動二輪車等の車両用エンジンに
おいては、吸気を清浄化するためのエアクリーナが使用
され、エアクリーナで清浄化された空気が気化器で燃料
と混合した後燃焼室に吸入される。このエアクリーナ
は、空気流動による吸気音を生じ、騒音の原因になるこ
とがあるので、エアクリーナへの空気取入口をダクトで
形成し、かつ該ダクト内に吸音手段を設けて騒音を低減
させることが行われている。2. Description of the Related Art In a vehicle engine such as an automobile or a motorcycle, an air cleaner for purifying intake air is used, and air purified by the air cleaner is mixed with fuel by a carburetor and then sucked into a combustion chamber. . This air cleaner generates intake noise due to air flow and may cause noise.Therefore, it is possible to form an air intake to the air cleaner by a duct and provide a sound absorbing means in the duct to reduce noise. Is being done.
【０００３】上記吸音手段として、実開昭62-101018 号
公報に、吸気ダクトの一部にダクトの壁を貫通する多数
の小孔を設けて多孔部を形成し、この多孔部の外周をフ
ィルタ材、吸音材及び密封性のカバーで順次被覆して構
成した吸気消音装置が開示されている。As the sound absorbing means, Japanese Utility Model Laid-Open Publication No. 62-101018 discloses a porous part formed by providing a small number of small holes penetrating the duct wall in a part of an intake duct, and filtering the outer periphery of the porous part with a filter. An intake silencer is disclosed which is sequentially covered with a material, a sound absorbing material and a sealing cover.
【０００４】また、特公平１-27253号公報には、四角形
断面の吸気ダクトの内面にウレタン等から成る吸音材の
層を設け、この吸音材の層の内面をパンチングプレート
またはメッシュから成る骨材で支持して構成した吸気消
音装置が開示されている。In Japanese Patent Publication No. 1-27525, a sound absorbing material layer made of urethane or the like is provided on the inner surface of an intake duct having a rectangular cross section, and the inner surface of the sound absorbing material layer is made of an aggregate made of a punching plate or mesh. Discloses an intake silencer configured to be supported by the above.
【０００５】[0005]
【解決しようとする課題】しかし、上記実開昭62-10101
8 号に開示された吸気消音装置においては、ダクト本体
に孔を形成するのでこの部分の剛性が低下し、これを補
うためにダクトの肉厚を厚くすると重量が増加する。ま
た、カバーは取付性を考慮して一般に２つの半割形状と
されるので部品点数が増し、かつ、カバーとダクトとの
間の隙間および半割りにされた２つのカバー部片間の隙
間から水が浸入し、吸音材の効果が低減する可能性があ
る。さらに、水の浸入を完全に防止するためにはシール
部材が必要となり、部品点数を増すとともに、取付作業
も面倒になる。[Problem to be solved]
In the intake silencer disclosed in No. 8, the rigidity of this portion is reduced because a hole is formed in the duct body, and when the thickness of the duct is increased to compensate for this, the weight increases. In addition, the cover is generally formed into two halves in consideration of the mounting property, so that the number of parts increases, and the gap between the cover and the duct and the gap between the two halved cover pieces are increased. Water may penetrate and the effect of the sound absorbing material may be reduced. Furthermore, in order to completely prevent water from entering, a sealing member is required, which increases the number of parts and complicates the mounting operation.
【０００６】一方、特公平 1-27253号のものにおいて
は、ダクトの内面に吸音材およびパンチングプレート等
が配設されるので、吸気通路断面積がかなり小さくな
り、エンジン出力の低下を招くという不具合が生ずる。On the other hand, in Japanese Patent Publication No. Hei 1-27253, since the sound absorbing material and the punching plate are disposed on the inner surface of the duct, the cross-sectional area of the intake passage becomes considerably small, and the engine output is reduced. Occurs.
【０００７】[0007]
【課題を解決するための手段および作用】本発明はこの
ような事情に鑑みてなされたもであり、第１の本発明に
おいては、第１および第２の吸気ダクト部材を互いに接
続して構成される吸気ダクトに設けられる吸気消音装置
において、前記第１吸気ダクト部材の前記第２吸気部材
との接続部近くに膨出部を形成して該膨出部内に吸音材
を配設し該吸音材の内側面に沿わせて孔付きプレートを
添設し、該孔付きプレートを該プレートに形成された係
合部を介して前記第１吸気ダクト部材に係合させるとと
もに、前記第１吸気ダクト部材に嵌入させた前記第２吸
気ダクト部材の端面を前記孔付きプレートの対向する端
面に当接させる。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in the first invention, the first and second intake duct members are connected to each other. An air intake silencing device provided in an air intake duct provided, wherein a bulging portion is formed near a connection portion of the first air intake duct member with the second air intake member, and a sound absorbing material is disposed in the bulging portion, and the sound absorbing device is provided. A plate with a hole is attached along the inner surface of the material, and the plate with the hole is engaged with the first intake duct member via an engaging portion formed in the plate, and the first intake duct is An end face of the second intake duct member fitted into the member is brought into contact with an opposite end face of the plate with holes.
【０００８】この発明によれば、前記した従来技術の諸
問題点を解決できるとともに、孔付きプレートを第１吸
気ダクト部材に係合させることと、第２吸気ダクト部材
の端面を孔付きプレートの対向する端面に当接させるこ
ととによって、孔付きプレートを所定位置に確実に支持
することができ、従ってまた吸気消音装置の組立作業も
容易になる。According to the present invention, the above-mentioned problems of the prior art can be solved, the plate with holes is engaged with the first intake duct member, and the end face of the second intake duct member is connected to the plate with holes. By contacting the opposite end faces, the perforated plate can be reliably supported in a predetermined position, and the assembly operation of the intake silencer is also facilitated.
【０００９】第２の本発明においては、吸気ダクトに設
けられる吸気消音装置において、吸気ダクト部材に膨出
部を形成して該膨出部内に吸音材を配設し該吸音材の内
側面に沿わせて孔付きプレートを添設し、前記吸気ダク
ト部材および孔付きプレートを横断面が長円形の筒状に
形成するとともに、前記孔付きプレートに前記吸気ダク
ト部材に形成された係合孔に係合する係合凸部を設け、
かつこれらの係合孔および係合凸部を前記長円形の短径
の端部位置に設ける。According to a second aspect of the present invention, in the air intake silencing device provided in the air intake duct, a bulging portion is formed in the air intake duct member, a sound absorbing material is disposed in the bulging portion, and an inner surface of the sound absorbing material is provided. Along with a plate with a hole along the side, the intake duct member and the plate with a hole are formed in a tubular shape having an oval cross section, and an engagement hole formed in the plate with a hole is formed in the plate with the hole. Providing an engaging projection to engage,
In addition, these engaging holes and engaging projections are provided at the positions of the ends of the oval minor axis.
【００１０】この発明による吸気消音装置は、吸気通路
の横断面が長円形をなすので、横断面が多角形のものに
比較して吸気抵抗が小さい。しかも、孔付きプレートと
吸気ダクト部材との係合は、孔付きプレートの係合凸部
を吸気ダクト部材の係合孔に嵌入させることにより行わ
れるので、係合状態を容易に確認できるとともに、孔付
きプレートの吸気ダクト部材に対する取付け、取外し作
業が容易である。さらに、上記係合孔および係合凸部は
長円形の短径の端部位置すなわち曲率半径が大きく平面
に近い面部分に設けられるので、特に吸気ダクト部材の
係合孔の孔加工が容易で、精度も向上する。[0010] In the intake air silencer according to the present invention, the cross section of the intake passage is oblong, so that the intake resistance is smaller than that of a polygonal cross section. In addition, since the engagement between the perforated plate and the intake duct member is performed by fitting the engagement projection of the perforated plate into the engagement hole of the intake duct member, the engaged state can be easily confirmed, The work of attaching and detaching the plate with holes to and from the intake duct member is easy. Further, since the engaging hole and the engaging convex portion are provided at the end portion of the elliptical minor diameter, that is, at the surface portion having a large radius of curvature and being close to a plane, it is particularly easy to drill the engaging hole of the intake duct member. , Accuracy is also improved.
【００１１】第３の本発明は、断面長円形の同様な吸気
消音装置において、特に、孔付きプレートの多数の孔
を、前記長円形の短径の両端部からそれぞれ長径方向両
側へ延びる曲率半径の大きい面部分に短径方向に穿設し
たことを特徴とする。According to a third aspect of the present invention, there is provided a similar air intake silencer having an elliptical cross section, and in particular, a plurality of holes of a perforated plate are provided with radii of curvature extending from both ends of the minor axis of the ellipse to both sides in the major axis direction. Characterized in that it is perforated in the direction of the minor axis on the surface portion having a large diameter.
【００１２】この発明によれば、横断面長円形の孔付き
プレート素材に多数の孔を同時に簡単にかつ精度良く穿
設することができる。すなわち、各孔に対応する多数の
穿孔部を平行に突出させた上下一組の型を、長円形断面
のプレート素材の短径方向上下両側から該素材に押し付
けることにより、長径方向に延びる曲率の大きい面部分
にすべての孔を同時に型抜きすることができる。前記面
部分は短径方向にほぼ直角をなしているので、前記各穿
孔部はプレート素材をその面に対してほぼ直角に打抜
く。従って精度の良い孔が得られるとともに、穿孔部に
変形や破損が生ずることもほとんどない。According to the present invention, a large number of holes can be easily and accurately formed in a plate material with holes having an oval cross section. That is, by pressing a pair of upper and lower molds having a large number of perforated portions corresponding to each hole projecting in parallel from both upper and lower sides in the short diameter direction of the plate material having an oval cross section, the curvature extending in the long diameter direction is obtained. All holes can be stamped out in a large area at the same time. Since the surface portion is substantially perpendicular to the minor diameter direction, each of the perforations punches the plate material substantially perpendicular to the surface. Therefore, an accurate hole can be obtained, and deformation or breakage of the perforated portion hardly occurs.
【００１３】[0013]
【実 施 例】図１は本発明による吸気消音装置を備え
た自動車のエンジンルーム内の一部を示す斜視図で、図
２はその前面図である。FIG. 1 is a perspective view showing a part of the interior of an engine room of an automobile equipped with an intake muffler according to the present invention, and FIG. 2 is a front view thereof.
【００１４】１は車体のエンジンルーム側部に設けられ
るホイールハウス、２はホイールハウス１の外側に設け
られるフエンダを示す。ホイールハウス１には内方に屈
曲するホイールエプロン1aが形成され、その内側縁に沿
わせてサイドフレーム３が設けられている。ホイールハ
ウス１に形成したダンパハウジング1bの前方にホイール
エプロン1aとサイドフレーム３とに跨らせてエアクリー
ナ４が配置されている。エアクリーナ４は、ロアケース
５とこれに着脱自在なアッパケース６とで構成され、内
部に図示してないクリーナエレメントが装着されてい
る。Reference numeral 1 denotes a wheel house provided on the side of the engine room of the vehicle body, and 2 denotes a fender provided outside the wheel house 1. The wheel house 1 is formed with a wheel apron 1a which is bent inward, and a side frame 3 is provided along the inner edge thereof. An air cleaner 4 is disposed in front of a damper housing 1b formed in the wheel house 1 so as to straddle the wheel apron 1a and the side frame 3. The air cleaner 4 is composed of a lower case 5 and an upper case 6 which is detachable from the lower case 5, and has a cleaner element (not shown) mounted therein.
【００１５】エアクリーナ４には吸気ダクト７を通じて
外気が導入されるが、この吸気ダクト７は、側方へ向っ
て開口し、エアクリーナ４の前方を横切り、他端部にお
いて下方へ屈曲した第１吸気ダクト部材８と、この第１
吸気ダクト部材８の屈曲した下端部に接続され、サイド
フレーム３の下方を迂回した後上方へ向ってホイールエ
プロン1aを貫通し、ロアケース５の前面部分に形成した
下向きに開口する流入口5aに接続する第２吸気ダクト部
材９とによって構成されている。Outside air is introduced into the air cleaner 4 through an intake duct 7. The intake duct 7 opens sideways, crosses the front of the air cleaner 4, and bends downward at the other end. The duct member 8 and the first
It is connected to the bent lower end of the intake duct member 8, bypasses the lower part of the side frame 3, penetrates upward through the wheel apron 1 a, and connects to the downward opening inflow port 5 a formed in the front part of the lower case 5. And the second intake duct member 9.
【００１６】第１吸気ダクト部材８および第２吸気ダク
ト部材９はそれぞれ分岐管10ａ，10ｂを介して共鳴室11
ａ，11ｂに連通し、共鳴室11ａ，11ｂ内の空気の共鳴に
よって吸気ダクト７の騒音エネルギを吸収するようにな
っているが、さらに第１吸気ダクト部材８に本発明によ
る吸気消音装置12が設けられている。この吸気消音装置
12は図示のように第１吸気ダクト部材８と第２吸気ダク
ト部材９の接続部分において第１吸気ダクト部材８側に
設けられている。以下、図３ないし図９を参照して吸気
消音装置12を説明する。The first intake duct member 8 and the second intake duct member 9 are connected to the resonance chamber 11 via branch pipes 10a and 10b, respectively.
a, 11b, so that the noise energy of the intake duct 7 is absorbed by the resonance of the air in the resonance chambers 11a, 11b. Is provided. This intake silencer
12 is provided on the first intake duct member 8 side at the connection portion between the first intake duct member 8 and the second intake duct member 9 as shown in the figure. Hereinafter, the intake silencer 12 will be described with reference to FIGS.
【００１７】図３は図１，２の第１吸気ダクト部材８を
後方から見た図面で、吸気消音装置12の近傍は断面で示
してある。13は第１吸気ダクト部材８の背面に設けられ
た取付部で、第１吸気ダクト部材８はこの取付部13によ
り前記ロアケース５の前面に固定されている。吸気消音
装置12部分において第１吸気ダクト部材８は拡径し、膨
出部14を形成している。この膨出部14を含めその上流側
および下流側の第１吸気ダクト部材８部分は、図４およ
び図５に示すように、長円形の横断面形状をなし、長径
ｂ方向の両外側に沿わせて突設したリブ15によって補強
されている。そして一方のリブ15は共鳴室11ａを支える
ステー部材を兼ねている。なお16は共鳴室11ａの底部に
設けられた水抜き孔である。FIG. 3 is a view of the first intake duct member 8 of FIGS. 1 and 2 as viewed from the rear, and the vicinity of the intake silencer 12 is shown in cross section. Reference numeral 13 denotes a mounting portion provided on the back surface of the first intake duct member 8, and the first intake duct member 8 is fixed to the front surface of the lower case 5 by the mounting portion 13. In the intake silencer 12, the first intake duct member 8 expands in diameter and forms a bulging portion 14. As shown in FIGS. 4 and 5, the upstream and downstream first intake duct members 8 including the bulging portion 14 have an oval cross-sectional shape and extend along both outer sides in the major axis b direction. It is reinforced by ribs 15 projecting therefrom. One rib 15 also serves as a stay member for supporting the resonance chamber 11a. Reference numeral 16 denotes a drain hole provided at the bottom of the resonance chamber 11a.
【００１８】膨出部14の内部には例えばウレタン、繊維
材等から成る吸音材17が充填されており、この吸音材17
の内周面に沿わせて筒状の孔付きプレート18が設けられ
ている。この孔付きプレート18も長円形の横断面形状を
有している（図５，７）。孔付きプレート18には多数の
孔19が穿設されているが、これらの孔19は、図５に示す
ように、上記長円形の短径ａの両端部ａ1 ，ａ1 からそ
れぞれ長径ｂ方向両側へ延びる曲率半径の大きい面部分
20に、短径ａ方向へ向けて穿設されている。The inside of the bulging portion 14 is filled with a sound absorbing material 17 made of, for example, urethane, fiber material or the like.
A cylindrical plate 18 with holes is provided along the inner peripheral surface of the plate. The plate 18 with holes also has an oval cross-sectional shape (FIGS. 5 and 7). A number of holes 19 in perforated plate 18 are bored, these holes 19, as shown in FIG. 5, the major axis respectively from both ends a 1, a 1 of the minor diameter a of the oval b Surface portion with a large radius of curvature extending to both sides in the direction
20 is bored in the minor axis a direction.
【００１９】図６ないし図８に示すように、孔付きプレ
ート18の上流側の端面18ａに、上下の各前記面部分20の
中心位置すなわち短径ａの両端ａ1 ，ａ1 位置からそれ
ぞれ上流側へ突出した突片21が設けられている。そして
この突片21に径方向外側へ突出した円形の係合凸部22が
設けられ、該面部分20には上流側へ面した斜面23が形成
されている。一方、第１吸気ダクト部材８の内周面の前
記係合凸部22に対応する位置に係合孔24が設けられてお
り、係合凸部22を係合孔24に嵌入させることにより孔付
きプレート18と第１吸気ダクト部材８とが係合して、孔
付きプレート18が第１吸気ダクト部材８に位置決めされ
て支持される。前記斜面23は係合凸部22を係合孔24に嵌
入させる時に案内面として作用し、両者の係合を容易に
する。係合孔24は、図８に示すようにダクト部材８の管
壁を貫通する孔としてもよいし、あるいは図９に示すよ
うに管壁内面に凹設されたものとしてもよい。As shown in FIGS. 6 to 8, the upstream end face 18a of the perforated plate 18 is located at the center of each of the upper and lower surface portions 20, that is, at both ends a 1 and a 1 of the minor axis a. A protruding piece 21 protruding to the side is provided. The projecting piece 21 is provided with a circular engaging projection 22 projecting outward in the radial direction, and the surface portion 20 is formed with a slope 23 facing the upstream side. On the other hand, an engagement hole 24 is provided at a position corresponding to the engagement protrusion 22 on the inner peripheral surface of the first intake duct member 8, and the hole is formed by fitting the engagement protrusion 22 into the engagement hole 24. The perforated plate 18 and the first intake duct member 8 are engaged, and the perforated plate 18 is positioned and supported by the first intake duct member 8. The slope 23 acts as a guide surface when the engaging projection 22 is fitted into the engaging hole 24, and facilitates engagement between the two. The engagement hole 24 may be a hole penetrating the tube wall of the duct member 8 as shown in FIG. 8, or may be a recess formed on the inner surface of the tube wall as shown in FIG.
【００２０】このようにして形成された吸気消音装置12
の下流側から、第１吸気ダクト部材８に第２吸気ダクト
部材９を挿入して両ダクト部材が接続されるが、第１吸
気ダクト部材８の内面と第２吸気ダクト部材９の外面と
に互いに整合する凹部25および凸部26が形成されており
（図４参照）、これらの凹凸部25，26が係合することに
より、両ダクト部材８，９が互いに位置決めされる。そ
してこの時第２吸気ダクト部材９の端面９ａがこれに対
向する孔付きプレート18の端面18ｂに当接して、該孔付
きプレート18を下流側から支える（図３）。The intake silencer 12 thus formed
From the downstream side, the second intake duct member 9 is inserted into the first intake duct member 8 to connect the two duct members, but the inner surface of the first intake duct member 8 and the outer surface of the second intake duct member 9 A concave portion 25 and a convex portion 26 that are aligned with each other are formed (see FIG. 4), and by engaging these concave and convex portions 25, 26, the two duct members 8, 9 are positioned with respect to each other. Then, at this time, the end surface 9a of the second intake duct member 9 abuts against the end surface 18b of the plate 18 with holes opposed thereto, and supports the plate 18 with holes from the downstream side (FIG. 3).
【００２１】上記のように構成された吸気消音装置12
は、部品点数が少く、吸音材17に水が浸入することがな
く、また吸気通路断面積が小さくなってエンジン出力の
低下を招くというようなこともなく、従来の吸気消音装
置の不具合を克服できるが、さらに幾多の利点を有して
いる。The intake silencer 12 constructed as described above
Overcomes the drawbacks of the conventional intake silencer by reducing the number of parts, preventing water from entering the sound absorbing material 17 and reducing the cross-sectional area of the intake passage to reduce engine output. Although possible, it has a number of additional advantages.
【００２２】先ず、孔付きプレート18を係合凸部22と係
合孔24とにより第１吸気ダクト部材８に係合させるとと
もに第２吸気ダクト部材９の端面９ａを孔付きプレート
18の対向する端面18ｂに当接させることにより、孔付き
プレート18を所定位置に確実に支持することができ、ま
た吸気消音装置12の組立作業も容易になる。First, the holed plate 18 is engaged with the first intake duct member 8 by the engagement projections 22 and the engagement holes 24, and the end surface 9a of the second intake duct member 9 is
By contacting the opposed end surfaces 18b of the plate 18, the perforated plate 18 can be reliably supported at a predetermined position, and the assembling work of the intake silencer 12 is also facilitated.
【００２３】次に、孔付きプレート18と第１吸気ダクト
部材８との係合が、孔付きプレート18の係合凸部22を第
１吸気ダクト部材８の係合孔24に嵌入させることにより
行われるので、觸感等により係合状態を容易に確認でき
るとともに、孔付きプレート18の第１吸気ダクト部材８
に対する取付け、取外し作業が容易である。特に、係合
孔24を図８のような貫通孔とすれば、係合した係合凸部
22が外から見え、また孔付きプレート18を取外す際には
突出している係合凸部22を外から押し込んでやればよい
ので、係合の確認および取外し作業が一層容易になる。
しかも係合凸部22および係合孔24は長円形の短径ａの端
部位置すなわち曲率半径が大きく平面に近い面部分に設
けられるので、これらの加工、特に第１吸気ダクト部材
８への係合孔24の孔加工が容易で、精度も向上する。吸
気通路の横断面が長円形をなすので、横断面が多角形の
ものに比較して吸気抵抗が小さいことは言うまでもな
い。Next, the engagement between the perforated plate 18 and the first intake duct member 8 is performed by fitting the engaging projection 22 of the perforated plate 18 into the engaging hole 24 of the first intake duct member 8. As a result, the engagement state can be easily confirmed by a tactile sensation or the like, and the first intake duct member 8
It is easy to install and remove from. In particular, if the engaging hole 24 is a through hole as shown in FIG.
Since the engagement plate 22 can be seen from the outside and the projecting engagement projection 22 can be pushed in from the outside when removing the perforated plate 18, the engagement confirmation and removal operation are further facilitated.
Moreover, since the engaging projections 22 and the engaging holes 24 are provided at the end positions of the elliptical minor diameters a, that is, at the surface portions having a large radius of curvature and close to a flat surface, these processes, especially the first intake duct member 8, Drilling of the engagement hole 24 is easy and accuracy is improved. Since the cross section of the intake passage is oval, it goes without saying that the intake resistance is smaller than that of a polygonal cross section.
【００２４】さらに、孔付きプレート18の前記面部分20
に設けられる多数の孔19は、例えば図10に示すようにし
て、同時に簡単にかつ精度良く穿設することができる。
図10において27は孔付きプレート18と同じ長円形の断面
形状を有するダイスで、このダイス27に孔19を加工しよ
うとするプレート素材18´を嵌着し、上下一組の型28を
短径方向上下両側からプレート素材18´に押し付ければ
よい。型28には各孔19に対応する多数の穿孔部29が平行
に突出しており、これらの穿孔部29によってすべての孔
19が同時に打抜かれる。孔19を設ける部分すなわち前記
面部分20は大きな曲率半径で長径方向へ延び、全面にわ
たって短形方向に対して直角に近い角度をなしているの
で、各穿孔部29はプレート素材18´をその面に対してほ
ぼ直角に打抜くこととなる。従って精度の良い孔19が得
られ、また各孔19の長さが短く穿孔部29の突出長も短か
くてすむので、穿孔部29に変形や破損が生ずることもほ
とんどない。Further, the surface portion 20 of the perforated plate 18
A large number of holes 19 provided can be simultaneously and simply and accurately drilled as shown in FIG.
In FIG. 10, reference numeral 27 denotes a die having the same oval cross-sectional shape as the plate 18 with holes. A plate material 18 ′ for forming a hole 19 is fitted into the die 27, and a pair of upper and lower dies 28 What is necessary is just to press on the plate material 18 'from both the upper and lower directions. A number of perforations 29 corresponding to each hole 19 protrude from the mold 28 in parallel, and all the holes 29 are formed by these perforations 29.
19 are punched at the same time. The portion where the hole 19 is provided, that is, the surface portion 20 extends in the major axis direction with a large radius of curvature, and forms an angle almost perpendicular to the short direction over the entire surface. Will be punched almost at right angles. Therefore, the holes 19 with high accuracy can be obtained, and the length of each hole 19 is short and the projection length of the perforated portion 29 can be short, so that the perforated portion 29 is hardly deformed or damaged.
【００２５】[0025]
【発明の効果】本発明による吸気消音装置は、部品点数
が少く、吸音材に水が浸入することがなく、しかも吸気
通路断面積が小さくなってエンジン出力の低下を招くこ
ともない。The intake air silencer according to the present invention has a small number of parts, does not allow water to enter the sound absorbing material, and does not cause a reduction in engine output due to a reduced intake passage sectional area.
【００２６】さらに、請求項１の発明によれば、孔付き
プレートを所定位置に確実に支持することができ、吸気
消音装置の組立作業も容易になる。Further, according to the first aspect of the present invention, the plate with holes can be reliably supported at a predetermined position, and the assembling work of the intake silencer can be facilitated.
【００２７】請求項２の発明によれば、吸気ダクト部材
に対する孔付きプレートの取付け、取外し作業が容易で
あるとともに、両者の係合状態を容易に確認することが
でき、さらに係合孔および係合凸部の加工が容易で、精
度も向上する。しかも吸気抵抗が小さい。According to the second aspect of the present invention, the work of attaching and detaching the plate with the hole to and from the intake duct member can be easily performed, and the engagement state between the two can be easily confirmed. The processing of the mating projection is easy and the accuracy is improved. Moreover, the intake resistance is small.
【００２８】請求項３の発明によれば、横断面長円形の
孔付きプレート素材に多数の孔を同時に簡単にかつ精度
良く穿設することができる。According to the third aspect of the present invention, a large number of holes can be simultaneously and easily drilled in a plate material with holes having an oval cross section.
【図１】本発明による吸気消音装置を備えた自動車のエ
ンジンルーム内の一部を示す斜視図である。FIG. 1 is a perspective view showing a part of an engine room of an automobile equipped with an intake silencer according to the present invention.
【図２】図１のエンジンルーム部分の前面図である。FIG. 2 is a front view of an engine room portion of FIG.
【図３】第１吸気ダクト部材の一部切截後面図である。FIG. 3 is a rear view partially cut away of a first intake duct member.
【図４】図３のIV-IV 線に沿う断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;
【図５】図３のＶ−Ｖ線に沿う断面図である。FIG. 5 is a sectional view taken along the line VV of FIG. 3;
【図６】孔付きプレートの平面図である。FIG. 6 is a plan view of a plate with holes.
【図７】孔付きプレートを図６の矢印VII 方向から見た
端面図である。FIG. 7 is an end view of the plate with holes as seen from the direction of arrow VII in FIG. 6;
【図８】図７の VIII-VIII線に沿う断面図である。FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7;
【図９】係合孔の変形例を示す図７と同様な断面図であ
る。FIG. 9 is a sectional view similar to FIG. 7, showing a modification of the engagement hole.
【図10】孔付きプレートの孔の加工法を説明するための
断面図である。FIG. 10 is a cross-sectional view for explaining a method of processing a hole in a plate with holes.
１…ホイールハウス、２…フエンダ、３…サイドフレー
ム、４…エアクリーナ、５…ロアケース、６…アッパケ
ース、７…吸気ダクト、８…第１吸気ダクト部材、９…
第２吸気ダクト部材、10…分岐管、11…共鳴室、12…吸
気消音装置、13…取付部、14…膨出部、15…リブ、16…
水抜き孔、17…吸音材、18…孔付きプレート、19…孔、
20…面部分、21…突片、22…係合凸部、23…斜面、24…
係合孔、25…凹部、26…凸部、17…ダイス、28…型、29
…穿孔部。DESCRIPTION OF SYMBOLS 1 ... Wheel house, 2 ... Fuenda, 3 ... Side frame, 4 ... Air cleaner, 5 ... Lower case, 6 ... Upper case, 7 ... Intake duct, 8 ... 1st intake duct member, 9 ...
Second intake duct member, 10: branch pipe, 11: resonance chamber, 12: intake silencer, 13: mounting portion, 14: bulging portion, 15: rib, 16 ...
Drain holes, 17 ... sound absorbing material, 18 ... plate with holes, 19 ... holes,
20 ... surface part, 21 ... protruding piece, 22 ... engaging convex part, 23 ... slope, 24 ...
Engagement hole, 25 ... concave, 26 ... convex, 17 ... die, 28 ... mold, 29
... perforated part.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F02M 35/12 - 35/14 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F02M 35/12-35/14
Claims (3)
に接続して構成される吸気ダクトに設けられる吸気消音
装置において、前記第１吸気ダクト部材（８）の前記第
２吸気ダクト部材（９）との接続部近くに膨出部（14)
を形成して該膨出部内に吸音材（17) を配設し該吸音材
の内側面に沿わせて孔付きプレート（18）を添設し、該
孔付きプレートを該プレートに形成された係合部（22)
を介して前記第１吸気ダクト部材に係合させるととも
に、前記第１吸気ダクト部材に嵌入させた前記第２吸気
ダクト部材の端面（９ａ）を前記孔付きプレートの対向
する端面（18ｂ）に当接させたことを特徴とする吸気消
音装置。An intake silencer provided in an intake duct formed by connecting a first and a second intake duct member to each other, wherein the second intake duct member (9) of the first intake duct member (8) is provided. (14) near the connection with the bulge
The sound absorbing material (17) is disposed in the bulging portion, and a plate with a hole (18) is provided along the inner surface of the sound absorbing material, and the plate with the hole is formed in the plate. Engagement part (22)
And the end face (9a) of the second intake duct member fitted into the first intake duct member is brought into contact with the opposite end face (18b) of the perforated plate. An intake silencer characterized by being in contact with.
おいて、吸気ダクト部材（８）に膨出部（14) を形成し
て該膨出部内に吸音材（17）を配設し該吸音材の内側面
に沿わせて孔付きプレート（18) を添設し、前記吸気ダ
クト部材および孔付きプレートを横断面が長円形の筒状
に形成するとともに、前記孔付きプレートに前記吸気ダ
クト部材に形成された係合孔（24) に係合する係合凸部
（22)を設け、かつこれらの係合孔および係合凸部を前
記長円形の短径（ａ）の端部（ａ1 ）位置に設けたこと
を特徴とする吸気消音装置。2. An intake muffler provided in an intake duct, wherein a swelling portion (14) is formed in the intake duct member (8), and a sound absorbing material (17) is disposed in the swelling portion. A perforated plate (18) is provided along the inner surface to form the intake duct member and the perforated plate into a tubular shape having an oval cross section, and the perforated plate is formed on the intake duct member. The engaging hole (24) is provided with an engaging protrusion (22) for engaging with the engaging hole (24), and the engaging hole and the engaging protrusion are connected to the end (a 1 ) of the oval minor diameter (a). An intake silencer provided at a position.
おいて、吸気ダクト部材（８）に膨出部（14) を形成し
て該膨出部内に吸音材（17) を配設し該吸音材の内側面
に沿わせて多数の孔を有する孔付きプレート（18)を添
設し、前記吸気ダクト部材および孔付きプレートを横断
面が長円形の筒状に形成するとともに、前記孔付きプレ
ートを該プレートの前記長円形の短径端部（ａ1 ）位置
に形成された係合部（22) を介して前記吸気ダクト部材
に係合させ、かつ前記孔付きプレートの多数の孔（19）
を、前記長円形の短径（ａ）の両端部（ａ1 ，ａ1 ）か
らそれぞれ長径（ｂ）方向両側へ延びる曲率半径の大き
い面部分（20) に短径方向に穿設したことを特徴とする
吸気消音装置。3. An air intake silencer provided in an air intake duct, wherein a bulge (14) is formed in an air intake duct member (8), and a sound absorbing material (17) is provided in the bulge. A perforated plate (18) having a large number of holes is provided along the inner surface, and the intake duct member and the perforated plate are formed in a tubular shape having a cross section of an oblong shape. the oblong short diameter end of the plate (a 1) engaging portion formed at a position through the (22) engaged with the intake duct member, and a large number of holes of the perforated plate (19)
Is formed in a short diameter direction in a surface portion (20) having a large radius of curvature extending from both ends (a 1 , a 1 ) of the oval short diameter (a) to both sides in the long diameter (b) direction. Characteristic intake silencer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11070791A JP2877982B2 (en) | 1991-04-17 | 1991-04-17 | Intake silencer |
| EP19920303379 EP0509782B1 (en) | 1991-04-17 | 1992-04-15 | Intake noise damping device |
| DE1992600194 DE69200194T2 (en) | 1991-04-17 | 1992-04-15 | Intake silencer. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11070791A JP2877982B2 (en) | 1991-04-17 | 1991-04-17 | Intake silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04318269A JPH04318269A (en) | 1992-11-09 |
| JP2877982B2 true JP2877982B2 (en) | 1999-04-05 |
Family
ID=14542424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11070791A Expired - Fee Related JP2877982B2 (en) | 1991-04-17 | 1991-04-17 | Intake silencer |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0509782B1 (en) |
| JP (1) | JP2877982B2 (en) |
| DE (1) | DE69200194T2 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2895407B2 (en) * | 1994-12-01 | 1999-05-24 | 本田技研工業株式会社 | Intake silencer |
| JP3923198B2 (en) | 1998-10-14 | 2007-05-30 | 本田技研工業株式会社 | Automobile air intake silencer duct |
| DE10000418A1 (en) * | 2000-01-07 | 2001-08-09 | Abb Turbo Systems Ag Baden | Compressor of an exhaust gas turbocharger |
| US20010046302A1 (en) * | 2000-04-14 | 2001-11-29 | Daly Paul D. | Active noise cancellation optimized air gaps |
| JP4847749B2 (en) * | 2005-12-26 | 2011-12-28 | 株式会社マーレ フィルターシステムズ | Air introduction duct |
| JP4727608B2 (en) * | 2007-03-16 | 2011-07-20 | タイガースポリマー株式会社 | Intake silencer and silencer method |
| WO2009110060A1 (en) * | 2008-03-04 | 2009-09-11 | 東京濾器株式会社 | Sound-deadening structure of vent tube and sound-deadening structure of case |
| JP4996535B2 (en) * | 2008-05-08 | 2012-08-08 | タイガースポリマー株式会社 | Sound absorption duct |
| IT1400167B1 (en) | 2010-05-21 | 2013-05-17 | Fiat Group Automobiles Spa | SILENT DUCT FOR FLUID FLOWS AND METHOD FOR ITS ACHIEVEMENT. |
| JP5859371B2 (en) * | 2012-04-23 | 2016-02-10 | タイガースポリマー株式会社 | Air intake duct with silencer |
| JP6354734B2 (en) | 2015-11-16 | 2018-07-11 | 株式会社デンソー | Abnormality detection device for internal combustion engine |
| KR102441400B1 (en) | 2017-11-17 | 2022-09-07 | 현대자동차주식회사 | Clamp for fixing pipes installed on pipe structures within sound absorber |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393163A1 (en) * | 1977-05-30 | 1978-12-29 | Honda Motor Co Ltd | APPLIANCE SERVING TO ELIMINATE SUCTION NOISE FROM AN INTERNAL COMBUSTION ENGINE |
| DE3531353A1 (en) * | 1985-09-03 | 1987-03-12 | Audi Ag | Charge air cooler for supercharged internal combustion engine |
-
1991
- 1991-04-17 JP JP11070791A patent/JP2877982B2/en not_active Expired - Fee Related
-
1992
- 1992-04-15 EP EP19920303379 patent/EP0509782B1/en not_active Expired - Lifetime
- 1992-04-15 DE DE1992600194 patent/DE69200194T2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69200194T2 (en) | 1994-09-29 |
| DE69200194D1 (en) | 1994-07-21 |
| JPH04318269A (en) | 1992-11-09 |
| EP0509782B1 (en) | 1994-06-15 |
| EP0509782A1 (en) | 1992-10-21 |
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Legal Events
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