JPS581070Y2 - Engine soundproof structure - Google Patents
Engine soundproof structureInfo
- Publication number
- JPS581070Y2 JPS581070Y2 JP5648878U JP5648878U JPS581070Y2 JP S581070 Y2 JPS581070 Y2 JP S581070Y2 JP 5648878 U JP5648878 U JP 5648878U JP 5648878 U JP5648878 U JP 5648878U JP S581070 Y2 JPS581070 Y2 JP S581070Y2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- gap
- pulley
- noise
- damper
- 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
Links
Landscapes
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Description
【考案の詳細な説明】
本考案はエンジンに取り付くプーリーのような回転体と
それに近接するエンジン本体あるいはこれに取り付く部
材の壁面との間隙を通り外部に伝達され１あるいはこの
間隙で増幅される騒音を低減させる防音構造に関するも
のである。[Detailed description of the invention] This invention is based on the noise that is transmitted to the outside through a gap between a rotating body such as a pulley attached to an engine and the wall surface of the engine body or a member attached thereto, and is amplified in this gap. The invention relates to a soundproof structure that reduces noise.
一般にエンジンの周辺には種々の付属装置や部品が近接
して配設されることが多い。Generally, various accessory devices and parts are often disposed close to the engine.
ところが、その装置もしくは部品とエンジン本体の壁面
との間に間隙が存在する場合には、この間隙を通り外部
に伝達される騒音や、この間隙によって固有の周波数を
増幅して大きな騒音となる定在数を発生させるためにエ
ンジン全体の騒音を増長させることになる。However, if there is a gap between the equipment or parts and the wall of the engine body, noise may be transmitted to the outside through this gap, or the specific frequency may be amplified by this gap, resulting in loud noise. This increases the overall noise of the engine.
クランクプーリーとエンジン本体あるいはウォーターポ
ンププーリーとポンプ本体等の様に回転体とそれを取り
付けた本体の壁面との間隙においても同様である。The same applies to the gap between the rotating body and the wall surface of the body to which it is attached, such as between the crank pulley and the engine body, or between the water pump pulley and the pump body.
例えば、前記クランクプーリーとエンジン本体との間隙
についてみると、一般に前部に配置されているギヤケー
スカバーの振動音あるいはタイミングギヤの噛合い音、
さらにはその他クランクシャフトに沿って伝わる音等が
プーリーの後面とそれに近接するギヤケースカバーの壁
面との間隙を通り外部に伝達され、あるいはこの間隙に
よって誘発される定在波によってエンジン全体の騒音を
増長するものとなっている。For example, when looking at the gap between the crank pulley and the engine body, the vibration noise of the gear case cover, which is generally located at the front, or the meshing noise of the timing gear,
Furthermore, other sounds transmitted along the crankshaft are transmitted to the outside through the gap between the rear surface of the pulley and the wall of the gear case cover adjacent to it, or the standing waves induced by this gap increase the noise of the entire engine. It has become something to do.
本考案は以上の点に鑑み、回転体とそれに近接するエン
ジン本体あるいはこれに取り付く部材ノ壁面との間隙を
通って外部に伝達される騒音と、この間隙によって誘発
される騒音とを抑制せんとするものである。In view of the above points, the present invention aims to suppress the noise transmitted to the outside through the gap between the rotating body and the adjacent engine body or the wall surface of the member attached thereto, and the noise induced by this gap. It is something to do.
以下図示せる一実施例をもって本考案を説明する。The present invention will be explained below with reference to an embodiment shown in the drawings.
１はクランクプーリ、２はトーショナルダンパ−１３は
緩衝材、４はタイミングギヤケースカバーである。1 is a crank pulley, 2 is a torsional damper 13 is a buffer material, and 4 is a timing gear case cover.
クランクシャフト５の前部にはダンパー２を装着した回
転体としてのプーリー１が取り付けられ、その後にその
シャフト５によって駆動されるタイミングギヤ６および
７を覆うエンジン本体に取り付く部材としてのギヤケー
スカバー４がエンジン本体としてのシリンダボディー８
に取り付けられている。A pulley 1 as a rotating body equipped with a damper 2 is attached to the front part of the crankshaft 5, and then a gear case cover 4 as a member attached to the engine body covers timing gears 6 and 7 driven by the shaft 5. Cylinder body 8 as the engine body
is attached to.
そして、プーリー１およびダンパー２とギヤケースカバ
ー４との間にプーリー１およびダンパー２：回転体の回
転等によっても干渉しない範囲でギヤケースカバーの壁
面４Ａ：回転体に近接する壁面に接着剤等によって取り
付けられたゴム等の防音効果をもった緩衝材３がプーリ
ーの後面１Ａおよびダンパーの後面２Ａに極めて近接し
、さらに、外周面２Ｂをも覆う様にするとともに同様に
近接して配設されている。Then, the pulley 1 and damper 2 are attached between the pulley 1 and damper 2 and the gear case cover 4 to the wall surface 4A of the gear case cover close to the rotating body within a range that does not interfere with the rotation of the rotating body using adhesive or the like. A cushioning material 3 having a soundproofing effect, such as rubber or the like, is located extremely close to the rear surface 1A of the pulley and the rear surface 2A of the damper, and further covers the outer circumferential surface 2B, and is disposed similarly close to the rear surface 1A of the pulley and the rear surface 2A of the damper. .
以上の如（構成した本考案の一実施例によればタイミン
グギヤ６と７の噛合う騒音あるいはエンジン内部で発し
クランクシャフト５に沿って伝ワる騒音等が回転体であ
るプーリー１およびダンパー２とこれに近接する壁面で
あるギヤケースカバーの壁面４Ａとの間隙を埋める様に
プーリーおよびダンパーの後面１Ａおよび２人に極めて
近接して緩衝材３を配設したからこの間から外部に洩れ
ることも極めて少なく、普たこの間隙で誘発される定在
波を発生することも抑制される。According to one embodiment of the present invention constructed as described above, the noise caused by the meshing of the timing gears 6 and 7 or the noise generated inside the engine and transmitted along the crankshaft 5 is transmitted to the pulley 1 and the damper 2, which are rotating bodies. Since the cushioning material 3 is arranged extremely close to the rear surface 1A of the pulley and damper and the two people so as to fill the gap between the wall surface 4A of the gear case cover, which is a wall surface adjacent thereto, it is highly unlikely that leakage will occur from this gap to the outside. This also suppresses the generation of standing waves induced in the gaps between the octopuses.
筐た、プーリー１およびダンパー２と緩衝材３との残り
の極めて小さい隙間から騒音が洩れて円周方向に放散さ
れるとしてもダンパーの外周面２Ｂをも緩衝材３によっ
て覆う様にしたからその方向を変えられるとともに、前
記の小さな隙間の通路をさらに延長できるから同様に抑
制されることになる。Even if the noise leaks from the remaining extremely small gaps between the pulley 1 and damper 2 and the buffer material 3 and is dissipated in the circumferential direction, the damper's outer peripheral surface 2B is also covered by the buffer material 3. Since the direction can be changed and the passage of the small gap can be further extended, it will be similarly suppressed.
以上の如く本考案によれば間隙を通り外部へ発する騒音
およびこの間隙で誘発される定在波を同時に抑制するか
らエンジンとして大きな騒音の低減効果を得る。As described above, according to the present invention, since the noise emitted to the outside through the gap and the standing waves induced in the gap are simultaneously suppressed, a large noise reduction effect can be obtained as an engine.
さらに１緩衝材３がギヤケースカッく−４に取り付けら
れることによりそのカバー４の振動を抑制する効果をも
たらすものである。Furthermore, by attaching the first shock absorbing material 3 to the gear case cover 4, vibrations of the cover 4 are suppressed.
尚、本実施例においてはダンパーツ外周面２Ｂを緩衝材
３によって覆うとして説明したがさらに進めて図中二点
鎖線で示す如く、ダンパーの前面２Ｃをも覆う様にして
も良く、この様にすることによりさらに騒音の低減効果
を増すものである。In this embodiment, the outer peripheral surface 2B of the damper part has been described as being covered by the cushioning material 3, but it is also possible to go further and cover the front surface 2C of the damper as shown by the two-dot chain line in the figure. This further increases the noise reduction effect.
筐た、クランクプーリー１およびダンパー２とギヤケー
スカバーの壁面４Ａとの間隙をもって本考案を説明した
がこれに限定されたものでもなら本考案はエンジン本体
あるいはこれに取り付く部材の壁面とその回りに存在す
る回転体との間隙に広く応用され得るものである。Although the present invention has been described with reference to the gap between the crank pulley 1 and damper 2 and the wall surface 4A of the gear case cover, the present invention is not limited to this. It can be widely applied to the gap between the rotating body and the rotating body.
図は本考案の一実施例を示す要部拡大図である。
１；クランクプーリー、２；トーショナルダンパ−３；
緩衝材、４；タイミングギヤケースカバー、５：クラン
クシャフト、６，７；タイミングギヤ、８ニジリンダボ
デイー。The figure is an enlarged view of essential parts showing an embodiment of the present invention. 1; crank pulley, 2; torsional damper 3;
Cushioning material, 4; Timing gear case cover, 5: Crankshaft, 6, 7; Timing gear, 8 Niji cylinder body.
Claims (1)
記回転体に近接するエンジン本体あるいはこれに取り付
く部材の壁面に緩衝材を取り付けるとともに、前記緩衝
材は前記回転体の後面に極めて近接し、さらに、残りの
面の少くとも外周面を覆う様に１同様に近接して配設し
たことを特徴とするエンジンの防音構造。In an engine having a rotating body such as a pulley, a buffer material is attached to the wall surface of the engine body or a member attached to the engine body near the rotating body, and the buffer material is extremely close to the rear surface of the rotating body, and further, A soundproof structure for an engine, characterized in that the structure is disposed close to each other in the same manner as in 1 so as to cover at least the outer peripheral surface of the remaining surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5648878U JPS581070Y2 (en) | 1978-04-27 | 1978-04-27 | Engine soundproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5648878U JPS581070Y2 (en) | 1978-04-27 | 1978-04-27 | Engine soundproof structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54159521U JPS54159521U (en) | 1979-11-07 |
| JPS581070Y2 true JPS581070Y2 (en) | 1983-01-10 |
Family
ID=28953430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5648878U Expired JPS581070Y2 (en) | 1978-04-27 | 1978-04-27 | Engine soundproof structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS581070Y2 (en) |
-
1978
- 1978-04-27 JP JP5648878U patent/JPS581070Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54159521U (en) | 1979-11-07 |
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