JP2000080925A - Silencer structure - Google Patents

Silencer structure

Info

Publication number
JP2000080925A
JP2000080925A JP10250205A JP25020598A JP2000080925A JP 2000080925 A JP2000080925 A JP 2000080925A JP 10250205 A JP10250205 A JP 10250205A JP 25020598 A JP25020598 A JP 25020598A JP 2000080925 A JP2000080925 A JP 2000080925A
Authority
JP
Japan
Prior art keywords
bag body
silencer
attaching part
bag
engine
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.)
Pending
Application number
JP10250205A
Other languages
Japanese (ja)
Inventor
Takaaki Ohashi
孝昭 大橋
Fumikazu Aoki
文和 青木
Akihiro Matsuura
昭博 松浦
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.)
HAYASHI GIJUTSU KENKYUSHO KK
Hayashi Gijutsu Kenkyusho KK
Original Assignee
HAYASHI GIJUTSU KENKYUSHO KK
Hayashi Gijutsu Kenkyusho KK
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 HAYASHI GIJUTSU KENKYUSHO KK, Hayashi Gijutsu Kenkyusho KK filed Critical HAYASHI GIJUTSU KENKYUSHO KK
Priority to JP10250205A priority Critical patent/JP2000080925A/en
Publication of JP2000080925A publication Critical patent/JP2000080925A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PROBLEM TO BE SOLVED: To improve heat resistance, and arrange a silencer around a noise source having a high temperature such as an engine by constituting the silencer appropriating a clearance between the noise source of a vehicle and a circumferential edge member by arranging a non-molded powdery or fibrous sound absorption material which is filled into a soft bag body, and an attaching part which is extendedly formed on the bag body. SOLUTION: In the case where a fuel injection pump is arranged adjacent to an engine block at a predetermined clearance, a silencer 10 arranged so as to appropriate the clearance is provided with a soft bag body and an attaching part 30 which is extendedly formed on the bag body 20. The bag body 20 is formed in a bag shape by bending over a soft surface material 21 and fixing circumferential edges of both sides, and non-molded powdery or a fibrous sound absorption material is filled in the bag body 20. In the soft surface material 21, a raw material having permeability is profitable for sound absorption performance, and a film having many fine holes can be used. The attaching part 30 is extendedly formed on the bag body 20, a surface of the bag body 20 is partitioned by means of dewing so as to form as an attaching part, a core plate 31 is arranged in the attaching part 30 for ensuring rigidity.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、自動車の騒音源（エ
ンジン）と周縁部材との隙間を充当するサイレンサーに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silencer for filling a gap between a noise source (engine) of an automobile and a peripheral member.

【０００２】[0002]

【従来の技術】従来より、自動車のエンジンルームに吸
音材を配置して音波の車外漏出を低減する例がある（た
とえば特公平７−１２２７９７号）。これはエンジンル
ームの壁面にそって繊維ボードを成形敷設してなるもの
で、エンジンの外周を囲いこんでエンジン音を遮蔽する
ものであった。この構成によれば外部への騒音の遮断
（遮音性能）においては有効であるが、エンジンルーム
内の音圧の低下には貢献しない。2. Description of the Related Art Conventionally, there is an example in which a sound absorbing material is disposed in an engine room of an automobile to reduce the leakage of sound waves outside the vehicle (for example, Japanese Patent Publication No. 7-122797). This was made by forming and laying a fiber board along the wall of the engine room, and was to surround the outer periphery of the engine to shield the engine sound. This configuration is effective in blocking noise to the outside (sound insulation performance), but does not contribute to lowering the sound pressure in the engine room.

【０００３】自動車のエンジン騒音は、電子制御化にと
もない、インジェクターのノイズが問題となってきてい
る。インジェクターはエンジン横に取付けられることが
ほとんどであるが、この際インジェクターより発生する
５０００Ｈｚ以上の高周波音は、エンジンブロックとの
隙間で定在波となって増幅され、不快な騒音となる。こ
の定在波の減衰をはからないで、エンジンを囲いこむだ
けでは、騒音の低減効果が高まらない。[0003] With respect to engine noise of automobiles, noise from injectors has become a problem with electronic control. In most cases, the injector is mounted on the side of the engine. At this time, a high-frequency sound of 5000 Hz or more generated from the injector becomes a standing wave in a gap between the engine block and amplified, resulting in unpleasant noise. Enclosing the engine without measuring the standing wave attenuation does not increase the noise reduction effect.

【０００４】[0004]

【発明が解決しようとする課題】本発明は上記課題にか
んがみ、エンジンルーム内において、エンジンの定在波
の発生する隙間に充当するに適したサイレンサー構造を
提供する。SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a silencer structure suitable for filling a gap where an engine standing wave is generated in an engine room.

【０００５】[0005]

【課題を解決するための手段】課題を解決する本発明の
手段は、自動車の騒音源と周縁部材との隙間を充当する
サイレンサーであって、柔軟な袋体に充填される未成形
の粉体状ないし繊維状の吸音材と、袋体に延長形成した
取付部とをもってなるサイレンサー構造、袋体に充填さ
れる吸音材に粒状綿を含むサイレンサー構造、袋体に充
填される吸音材にロックウールを含むサイレンサー構造
による。SUMMARY OF THE INVENTION The present invention provides a silencer for filling a gap between a noise source of an automobile and a peripheral member, wherein the unformed powder is filled in a flexible bag. Silencer structure that has a shape-like or fibrous sound-absorbing material and an attachment portion that is extended from the bag, a silencer structure that includes granular cotton in the sound-absorbing material filled in the bag, and rock wool that is filled in the bag. Depending on the silencer structure.

【０００６】本発明のサイレンサーは、柔軟な袋体に高
吸音性材料（粒状綿、ロックウール）を充填し、吸音性
能（特に周波数１０００Ｈｚ以上）にすぐれた構造であ
る。形状の自由度が高く、充当位置に合わせ変形させ、
袋体に延長形成した取付部をもって、騒音源と周縁部材
との隙間に充当することができる。特にエンジンと燃料
噴射ポンプの間のように取付角度（隙間）の調整がなさ
れる場合でも、これに追随して変形することができる。The silencer of the present invention has a structure in which a flexible bag is filled with a high sound absorbing material (granular cotton, rock wool) and has excellent sound absorbing performance (particularly, a frequency of 1000 Hz or more). High degree of freedom in shape, deformed according to the application position,
With the attachment portion extended and formed on the bag body, it can be applied to the gap between the noise source and the peripheral member. In particular, even when the mounting angle (gap) is adjusted, such as between the engine and the fuel injection pump, it can be deformed following the adjustment.

【０００７】[0007]

【発明の実施の形態】以下、図面をもとに本発明の好適
の実施の形態を説明する。図１は本発明によるサイレン
サーの外観図であり、図２は図１のＡ−Ａ線断面図であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external view of a silencer according to the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

【０００８】本発明のサイレンサー１０は、柔軟な袋体
２０と袋体に延長形成した取付部３０をもってなる。袋
体２０は不織布等、柔軟な表皮材２１を折り返して周縁
を表裏に固着し袋状に形成、内部に未成形の粉体状ない
しは繊維状の吸音材４０を充填してなる。The silencer 10 of the present invention comprises a flexible bag 20 and a mounting portion 30 formed to extend from the bag. The bag body 20 is formed by folding a flexible skin material 21 such as a nonwoven fabric and fixing the periphery to the front and back sides to form a bag shape, and filling the inside with an unformed powdery or fibrous sound absorbing material 40.

【０００９】柔軟な袋体２０は、不織布（特にポリエス
テルスパンボンド不織布）からなるのが最も適する。軽
量（１０〜５０ｇ／ｍ２）かつ柔軟であって、内包の緩
衝材がもれださない目の細かさが必要である。通気性の
ある素材が吸音性に有利である。多数の微孔があるフィ
ルムも使用可能である。周縁の固着は縫製、超音波溶
着、ホットメルト接着が考えられる。The flexible bag 20 is most suitably made of a non-woven fabric (particularly a polyester spun-bonded non-woven fabric). It is required to be lightweight (10 to 50 g / m 2 ) and flexible, and to have fine eyes so that the internal cushioning material does not leak out. A breathable material is advantageous for sound absorption. Films with multiple micropores can also be used. Sewing, ultrasonic welding, and hot melt bonding can be considered as the fixing of the peripheral edge.

【００１０】取付部３０は袋体２０に延長形成される。
具体的には袋体の（スパンボンド）表皮を縫製により区
切って取付部（表皮材とし）内部に芯板３１を配して剛
性を確保する。The attachment portion 30 is formed to extend from the bag body 20.
Specifically, the (span bond) skin of the bag body is separated by sewing, and a core plate 31 is arranged inside the mounting portion (used as a skin material) to secure rigidity.

【００１１】吸音材として、粉体状ないし繊維状の吸音
材が適する。特に好ましい実施例として、反毛雑綿、粒
状綿およびロックウールがある。吸音材はが繊維状の場
合、繊維直径５０μｍ以下が有利である。袋体への充填
密度は、反毛雑綿の場合、０．０１〜０．５０ｇ／ｃ
ｃ、粒状綿の場合、０．０７〜ｇ／ｃｃが適する。A powdery or fibrous sound absorbing material is suitable as the sound absorbing material. Particularly preferred embodiments include cotton wool, granular cotton and rock wool. When the sound absorbing material is fibrous, the fiber diameter is preferably 50 μm or less. The packing density of the bag is 0.01 to 0.50 g / c in the case of cotton wool.
c, In the case of granular cotton, 0.07 to g / cc is suitable.

【００１２】図３は、本発明のサイレンサーをディーゼ
ルエンジンの燃料噴射ポンプに装着する例に示す。図に
おいて、エンジンブロック１００に対して燃料噴射ポン
プ１１０がある隙間Ｓをおいて隣接している。この隙間
を充当する配置にサイレンサー１２０が配置されてい
る。この種の燃料噴射ポンプは、エンジンブロックへの
取付時に角度を微調整しながら取付けられるものであ
り、サイレンサーはこの微調整による隙間の変位に対応
する必要がある。本発明のサイレンサーの柔軟性と可揺
動性に取付態様（サイレンサーは取付部１２１のみ燃料
噴射ポンプの上部に固定されている）によって、隙間の
変位に対応して隙間を充当しつづけることが可能であ
る。FIG. 3 shows an example in which the silencer of the present invention is mounted on a fuel injection pump of a diesel engine. In the figure, a fuel injection pump 110 is adjacent to an engine block 100 with a gap S therebetween. The silencer 120 is arranged so as to fill the gap. This type of fuel injection pump is mounted on the engine block while finely adjusting the angle when mounted on the engine block, and the silencer needs to cope with displacement of the gap due to the fine adjustment. The flexibility and swingability of the silencer of the present invention allows the gap to be continuously filled in accordance with the displacement of the gap due to the mounting mode of the silencer (only the mounting portion 121 is fixed to the upper part of the fuel injection pump). It is.

【００１３】[0013]

【発明の効果】本発明によれば、騒音源としてのエンジ
ンと周縁部材との間を充当する、吸音性能にすぐれたサ
イレンサー構造が得られる。本発明のサイレンサーは、
袋体内の吸音材を分別回収、再利用可能でリサイクル性
がすぐれる耐熱性がすぐれるため、エンジン等の高温の
騒音源の周囲に配置できる。According to the present invention, it is possible to obtain a silencer structure having an excellent sound absorbing performance, which fills a space between an engine as a noise source and a peripheral member. The silencer of the present invention
Since the sound absorbing material in the bag body can be separated and collected, reusable and excellent in recyclability and excellent in heat resistance, it can be arranged around a high-temperature noise source such as an engine.

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

【図１】本発明のサイレンサーの外観図である。FIG. 1 is an external view of a silencer of the present invention.

【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along line AA of FIG.

【図３】本発明のサイレンサーをディーゼルエンジンの
燃料噴射ポンプに装着する例を示す。FIG. 3 shows an example in which the silencer of the present invention is mounted on a fuel injection pump of a diesel engine.

【符号の説明】 １０・・・サイレンサー ２０・・・袋体 ２１・・・表皮材 ２２・・・縫製跡 ３０・・・取付部 ３１・・・芯板 ３２・・・取付孔 ４０・・・吸音材[Description of Signs] 10 ... Silencer 20 ... Bag 21 ... Skin material 22 ... Sew mark 30 ... Mounting part 31 ... Core plate 32 ... Mounting hole 40 ... Sound absorbing material

───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3D023 BA02 BB16 BB30 BC00 BD21 BE03 BE04 BE31 BE35 5D061 AA02 AA23 AA29 CC20 DD01 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3D023 BA02 BB16 BB30 BC00 BD21 BE03 BE04 BE31 BE35 5D061 AA02 AA23 AA29 CC20 DD01

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 自動車の騒音源と周縁部材との隙間を充
当するサイレンサーであって、柔軟な袋体に充填される
未成形の粉体状ないし繊維状の吸音材と、袋体に延長形
成した取付部とをもってなることを特徴とするサイレン
サー構造。1. A silencer for filling a gap between a noise source of an automobile and a peripheral member, wherein the unformed powdery or fibrous sound absorbing material is filled in a flexible bag, and the bag is extended. A silencer structure characterized by having a mounting portion. 【請求項２】 請求項１において、袋体に充填される吸
音材に粒状綿を含むことを特徴とするサイレンサー構
造。2. The silencer structure according to claim 1, wherein the sound absorbing material filled in the bag contains granular cotton. 【請求項３】 請求項１において、袋体に充填される吸
音材にロックウールを含むことを特徴とするサイレンサ
ー構造。3. The silencer structure according to claim 1, wherein the sound absorbing material filled in the bag contains rock wool.
JP10250205A 1998-09-04 1998-09-04 Silencer structure Pending JP2000080925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10250205A JP2000080925A (en) 1998-09-04 1998-09-04 Silencer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10250205A JP2000080925A (en) 1998-09-04 1998-09-04 Silencer structure

Publications (1)

Publication Number Publication Date
JP2000080925A true JP2000080925A (en) 2000-03-21

Family

ID=17204394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10250205A Pending JP2000080925A (en) 1998-09-04 1998-09-04 Silencer structure

Country Status (1)

Country Link
JP (1) JP2000080925A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106128445A (en) * 2016-08-26 2016-11-16 四川三元环境治理股份有限公司 Full microperforated absorber acoustic filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106128445A (en) * 2016-08-26 2016-11-16 四川三元环境治理股份有限公司 Full microperforated absorber acoustic filter

Similar Documents

Publication Publication Date Title
JP3730395B2 (en) Sound absorbing material structure and method for manufacturing sound absorbing material
US4584232A (en) Foam material sound absorption
US9087505B2 (en) Ultra-light sound insulator
US7954596B2 (en) Acoustically and thermally acting insulation
US6601673B2 (en) Sound absorbing structure
US6305494B1 (en) Device for absorbing and/or damping sound waves
KR100285319B1 (en) Floor sound absorber that absorbs sound waves
EP2998163B1 (en) Engine cover
JPH05193423A (en) Capsule element of engine room
JP3296928B2 (en) Sound absorbing wall structure
CN105252871A (en) Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof
JP2000080925A (en) Silencer structure
JP3498471B2 (en) Sound absorbing material for engine cover
JPS6127633B2 (en)
JPH08207833A (en) Automobile engine under cover with sound absorbing function
JP2001306080A (en) Sound-absorbing material
JPH09134179A (en) Shield cover device for vibration and noise generation source
JP4057247B2 (en) Soundproof cover mounting structure
JPH038819Y2 (en)
JPH0676651U (en) Air cleaner
EP1006023A2 (en) Heat shield for motor-vehicles
EP3798440A1 (en) Intake duct
JP3028639U (en) Sound absorbing structure for vehicle engine cover
JP2005075012A (en) Sound insulating material for vehicle
JP3807919B2 (en) Sound absorber in the engine compartment of a car