JPS588915Y2 - Engine noise sound insulation device - Google Patents
Engine noise sound insulation deviceInfo
- Publication number
- JPS588915Y2 JPS588915Y2 JP11000878U JP11000878U JPS588915Y2 JP S588915 Y2 JPS588915 Y2 JP S588915Y2 JP 11000878 U JP11000878 U JP 11000878U JP 11000878 U JP11000878 U JP 11000878U JP S588915 Y2 JPS588915 Y2 JP S588915Y2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- sound insulating
- sound insulation
- engine noise
- insulation device
- 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】
本考案は内燃機関の騒音低減のための遮音装置に関し、
遮音効果を向上させると共に、遮音装置内部の冷却機能
を向上させ機関の熱的不具合を解消しようとするもので
ある。[Detailed description of the invention] The present invention relates to a sound insulation device for reducing noise of an internal combustion engine.
This aims to improve the sound insulation effect and improve the cooling function inside the sound insulation device to eliminate thermal problems in the engine.
内燃機関を搭載する自動車等において車外に対する騒音
低減のため、従来より機関の周囲を遮音板で遮へいする
ことが提案されているが、完全に密閉した場合は騒音低
減の効果は大きい反面機関の発熱により熱負荷が高くな
り、ペーパ、ロック。In order to reduce noise from outside the vehicle in vehicles equipped with internal combustion engines, it has been proposed to shield the area around the engine with a sound insulating plate. However, if the engine is completely sealed, the noise reduction effect is great, but the heat generated by the engine increases. Due to high heat load, paper, lock.
パーコレーション、部品の寿命低下等の熱的不具合が発
生する。Thermal problems such as percolation and reduced component life occur.
このため従来の機関用遮音板は通気用のダクトや穴を設
けて耐熱性を保持するようにして騒音低減量を犠牲にし
ているため車外騒音低減の効果を充分に発揮しえない欠
点があった。For this reason, conventional sound insulation boards for engines sacrifice noise reduction by providing ventilation ducts and holes to maintain heat resistance, which has the disadvantage of not being able to fully demonstrate the effect of reducing external noise. Ta.
←特公昭５１２４６４２号公報参照）
即ち第１図に示すようにエンジン６、トランスミッショ
ン８等を搭載するエンジンルーム１をフード５、図示し
ないサイドパネル及びアンダーカバー７等にてはゾ密閉
状態に構成しエンジン６等の騒音の外部への洩れを減少
させた従来装置においては、車両の走行時においてはラ
ジェータ３前部のラジェータグリル２より速度風の利用
とラジェータ冷却ファン４の作用によってエンジンルー
ム１内に冷気が流通し機関各部の冷却は耐熱限界範囲内
に入っており運転に支障は起らない。←Refer to Japanese Patent Publication No. 5124642) That is, as shown in Fig. 1, an engine room 1 in which an engine 6, a transmission 8, etc. are mounted is configured in a sealed state with a hood 5, a side panel (not shown), an under cover 7, etc. In the conventional device that reduces the leakage of noise from the engine 6, etc. to the outside, when the vehicle is running, the inside of the engine compartment 1 is controlled by the use of velocity air from the radiator grille 2 at the front of the radiator 3 and by the action of the radiator cooling fan 4. Cool air circulates throughout the engine, and the cooling of each part of the engine is within the heat-resistance limits, so there is no problem with operation.
しかし負荷走行後停止した場合、エンジンルーム１内は
高温にさらされるため冷却用通気孔の確保が必要となる
。However, when the engine is stopped after running under load, the interior of the engine room 1 is exposed to high temperatures, so it is necessary to provide cooling ventilation holes.
従って熱的に問題となる停止時のみ通気性を十分に確保
し、騒音発生が大きい走行時は遮音板の通気孔を閉じて
騒音低減効果を発揮するような構造とすればよい。Therefore, the structure may be such that sufficient ventilation is ensured only when the vehicle is stopped, which poses a thermal problem, and the ventilation holes in the sound insulating plate are closed when the vehicle is running, which generates a large amount of noise, to achieve a noise reduction effect.
本考案は遮音板を二重構造に構成し、該二重の遮音板に
それぞれ通気孔を設け、車両停止時には通気孔を開放し
て冷却向上をはかり、走行時は密閉して車外騒音低減向
上をはかったものである。In this invention, the sound insulation board has a double structure, and each of the double sound insulation boards has a ventilation hole.When the vehicle is stopped, the ventilation hole is opened to improve cooling, and when the vehicle is stopped, the ventilation hole is closed, which improves the reduction of external noise. It is calculated by
第２図は本考案の具体的一実施例を示すもので、エンジ
ンルームの下部を遮蔽する遮音板を固定遮音板９と可動
遮音板１０の二重構造により構成する。FIG. 2 shows a specific embodiment of the present invention, in which a sound insulating plate that shields the lower part of the engine room is constructed with a double structure of a fixed sound insulating plate 9 and a movable sound insulating plate 10.
各遮音板９，１０にはそれぞれ通気孔１１゜１２が設け
られ、固定遮音板９は例えはラジェータサポートメンバ
２１及びトランスミッション支持メンバ２２或は又図示
しない車体下部パネル等に固着されてエンジンルームの
下部を遮蔽しており、可動遮音板１０は固定遮音板９に
重なり、例えば図示の如くリンク１３．１４等により可
動なるよう支持されている。Each sound insulation plate 9, 10 is provided with a ventilation hole 11° 12, respectively, and the fixed sound insulation plate 9 is fixed to, for example, a radiator support member 21, a transmission support member 22, or a lower panel of the vehicle body (not shown), so that the sound insulation plate 9 is fixed to a lower panel of the vehicle body (not shown), and is connected to the engine compartment. The movable sound insulating plate 10 overlaps the fixed sound insulating plate 9 and is movably supported by links 13, 14, etc. as shown in the figure.
そして第４図の如く可動遮音板１０が固定遮音板９上に
密着した状態では両速音板９，１０に設けた通気孔１１
．１２は互の位置がそれぞれ変位し両速音板の通気孔１
１゜１２は閉の状態となり、第３図の如く可動遮音板１
０がリンク１３，１４により持ち上げられた状態になる
と両道気孔１１．１２が導通になるようになっている。When the movable sound insulating board 10 is in close contact with the fixed sound insulating board 9 as shown in FIG.
．． 12 is a ventilation hole 1 of both sound plates whose positions are displaced respectively.
1° 12 is in the closed state, and the movable sound insulating plate 1 is closed as shown in Figure 3.
When 0 is lifted up by the links 13 and 14, both the air holes 11 and 12 become electrically conductive.
一方のリンク１４にはダイヤフラム１５等のアクチュエ
ータが連結されており、該ダイヤフラム１５は温度セン
サ１６、電磁弁等により制御される機関の吸入負圧によ
り作動し、これにより可動遮音板１０の移動による通気
孔１１．１２の開閉が制御されるようになっている。An actuator such as a diaphragm 15 is connected to one link 14, and the diaphragm 15 is actuated by the suction negative pressure of the engine controlled by a temperature sensor 16, a solenoid valve, etc. The opening and closing of the ventilation holes 11, 12 are controlled.
その作動の詳細を第３，４図を参照して説明する。Details of its operation will be explained with reference to FIGS. 3 and 4.
車両走行中機関各部の温度が所定値以下の場合は温度セ
ンサ１６により電磁弁１７が作動し、リザーブタンク１
８に蓄えられた吸気管１９の負圧がダイヤフラム１５に
導通し、第４図の如くダイヤフラム１５が作動して可動
遮音板１０が固定遮音板９上に密着し通気孔１１．１２
の閉状態を保持している。When the temperature of each part of the engine is below a predetermined value while the vehicle is running, the temperature sensor 16 activates the solenoid valve 17 and the reserve tank 1 is activated.
The negative pressure in the intake pipe 19 stored in the intake pipe 8 is conducted to the diaphragm 15, and the diaphragm 15 operates as shown in FIG.
The closed state is maintained.
車両停止時で機関がアイドリング状態にあり、機関の温
度（水温、油温、燃料温度又は雰囲気温度等）が高くな
ると温度センサ１６により電磁弁１７はオフとなりダイ
ヤフラム１５は自己のスフ。When the engine is in an idling state when the vehicle is stopped and the engine temperature (water temperature, oil temperature, fuel temperature, ambient temperature, etc.) rises, the temperature sensor 16 turns off the solenoid valve 17 and the diaphragm 15 closes its own valve.
リング１５′により下降して可動遮音板１０を第３図の
ように上方に回動゛させ通気孔１１．１２は導通してエ
ンジンルーム内に多くの外気を導入して内部の冷却効果
を増大させる。The movable sound insulating plate 10 is lowered by the ring 15' and rotated upward as shown in Fig. 3, and the ventilation holes 11 and 12 are made conductive to introduce a large amount of outside air into the engine room and increase the cooling effect inside. let
機関停止時も電磁弁１７はオフであるので通気孔１１．
１２は導通状態に保持される。Since the solenoid valve 17 is off even when the engine is stopped, the ventilation hole 11.
12 is maintained in a conductive state.
尚第３図において２０は逆止弁であり、吸入負圧が小と
なる高負荷全開運転ダイヤフラム１４を作動させるサー
ブタンク１８内の負圧を保持するために設けられたもの
である。In FIG. 3, reference numeral 20 denotes a check valve, which is provided to maintain the negative pressure in the serve tank 18 that operates the high-load fully open operation diaphragm 14 in which the suction negative pressure is small.
第５図〜第７図は本考案の他の実施例を示すもので、可
動遮音板１０をスライド式とした例を示している。5 to 7 show other embodiments of the present invention, in which the movable sound insulating plate 10 is of a sliding type.
即ちこの例では可動遮音板１０は第７図のようにその両
側をスライドレール２４により固定遮音板９に重なり合
った状態でスライドし得るよう組付けられ該可動遮音板
１０のスライドを制御するアクチュエータとしては吸入
負圧ｌこより作動するエアシリンダ２３が用いられ、該
エアシリンダ２３を作動させる吸入負圧の制御は第３，
４図の実施例と同様温度センサ１６、電磁弁１７により
行なわれる。That is, in this example, as shown in FIG. 7, the movable sound insulating board 10 is assembled with slide rails 24 on both sides so as to be able to slide overlapping the fixed sound insulating board 9, and is used as an actuator to control the sliding of the movable sound insulating board 10. An air cylinder 23 operated by suction negative pressure l is used, and the suction negative pressure for operating the air cylinder 23 is controlled by a third,
Similar to the embodiment shown in FIG. 4, this is performed using a temperature sensor 16 and a solenoid valve 17.
このエアシリンダ２３により車両走行中温度があまり高
くないときは第５図のように通気孔１１゜１２が重なり
合わない閉の状態に保持され、機関アイドリング時或は
機関停止時等はエアシリンダ２３のリターンスプリング
（図示せず）により第６図のような通気孔１１．１２が
一致した導通状態に保持される。When the vehicle is running and the temperature is not very high, the air cylinder 23 keeps the vents 11 and 12 closed so that they do not overlap as shown in FIG. 5, and when the engine is idling or stopped, the air cylinder 23 A return spring (not shown) maintains the vents 11, 12 as shown in FIG. 6 in uniform conduction.
尚上記各実施例ではエンジンルームの下部を覆うアンダ
ーカバーに本考案を適用した例を示しているが、その他
サイドパネル等エンジンルームをはゾ密閉状態にカバー
する任意の遮音板に適用可能であることは言うまでもな
い。In each of the above embodiments, the present invention is applied to an undercover that covers the lower part of the engine room, but it can also be applied to any other sound insulating board that covers the engine room in a sealed state, such as a side panel. Needless to say.
又可動遮音板を作動させるアクチュエータとしては上記
ダイヤフラム、エアシリンダのばか例えば電動モータ等
任意のものを利用して得る。Further, as the actuator for operating the movable sound insulating plate, any suitable actuator such as the above-mentioned diaphragm or air cylinder may be used, such as an electric motor.
以上のように本考案では車両走行中は機関内温度が耐熱
限界範囲内にあるため二重の遮音板は密着して通気孔を
閉じており、車外騒音低減の向上をはかることができる
と共に、車両が停止している場合及びキーオフ直後は機
関内の各部の温度上昇が太きいため通気孔を開放するよ
うに可動遮音板を動かして通気孔を導通させ、冷却性の
確保を行なうことができ、騒音低減と機関内の冷却を効
果的に達成可能とすることができるもので、実用的効果
極めて犬なるものである。As described above, in this invention, when the vehicle is running, the temperature inside the engine is within the heat resistance limit range, so the double sound insulation plates are in close contact and close the ventilation holes, and it is possible to improve the noise reduction outside the vehicle. When the vehicle is stopped or immediately after the key is turned off, the temperature of various parts of the engine increases sharply, so the movable sound insulating plate can be moved to open the ventilation holes, allowing the ventilation holes to conduct, ensuring cooling performance. , it is possible to effectively achieve noise reduction and cooling within the engine, and the practical effects are extremely significant.
第１図は従来装置の縦断側面図、第２図は本考案の一実
施例を示す縦断側面図、第３図、第４図は第２図実施例
のものの作動状態をそれぞれ示す要部詳細図、第５〜１
図は本考案の他の実施例を示すもので、第５図、第６図
は作動状態をそれぞれ示す要部縦断面図、第７図は第６
図のＡ−Ａ断面図である。
９・・・・・・固定遮音板、１０・・・・・・可動遮音
板、１１゜１２・・・・・・通気孔、１５・・・・・・
ダイヤフラム、１６・・・・・・温度センサ、１７・・
・・・・電磁弁、１９・・・・・・吸気管、２３・・・
・・・エアシリンダ、
２４・・・・・・スライ
ドレーFig. 1 is a longitudinal side view of a conventional device, Fig. 2 is a longitudinal side view of an embodiment of the present invention, and Figs. 3 and 4 are details of main parts showing the operating state of the embodiment of Fig. 2. Figures 5-1
The figures show other embodiments of the present invention; FIGS. 5 and 6 are longitudinal cross-sectional views of main parts showing the operating states, and FIG.
It is an AA sectional view of the figure. 9...Fixed sound insulating board, 10...Movable sound insulating board, 11°12...Vent hole, 15...
Diaphragm, 16...Temperature sensor, 17...
...Solenoid valve, 19...Intake pipe, 23...
...Air cylinder, 24...Slide tray
Claims (3)
二重に形成して該二重の遮音板にそれぞれ通気孔を設け
、該遮音板の一方を他方（こ対し移動可能とし、両速音
板の通気開孔面積を調整可能としたことを特徴とするエ
ンジン騒音遮音装置。(1) Double sound insulating plates are formed to prevent engine noise from leaking to the outside, each of the double sound insulating plates is provided with a ventilation hole, one of the sound insulating plates is movable relative to the other, and both An engine noise sound insulation device characterized in that the area of ventilation openings in a sound plate is adjustable.
、油温、燃料温度、または機関周囲の雰囲気温度を検知
することにより移動させるようにしたことを特徴とする
実用新案登録請求の範囲第（１）項記載のエンジン騒音
遮音装置。(2) Scope of utility model registration claims characterized in that the movable sound insulating plate is moved by detecting the water temperature, oil temperature, fuel temperature of the engine located inside the shield, or the ambient temperature around the engine. The engine noise sound insulation device according to item (1).
フラムまたはエアシリンダ、或は電動モータ等のアクチ
ュエータによって制御するようにしたことを特徴とする
実用新案登録請求の範囲第（１）項又は第（２）項記載
のエンジン騒音遮音装置。(3) Utility model registration claim (1) characterized in that the operation of the movable sound insulating plate is controlled by a diaphragm or an air cylinder by the action of suction negative pressure, or an actuator such as an electric motor, or The engine noise sound insulation device according to item (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11000878U JPS588915Y2 (en) | 1978-08-10 | 1978-08-10 | Engine noise sound insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11000878U JPS588915Y2 (en) | 1978-08-10 | 1978-08-10 | Engine noise sound insulation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5525699U JPS5525699U (en) | 1980-02-19 |
| JPS588915Y2 true JPS588915Y2 (en) | 1983-02-17 |
Family
ID=29056485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11000878U Expired JPS588915Y2 (en) | 1978-08-10 | 1978-08-10 | Engine noise sound insulation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS588915Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6585456B2 (en) * | 2015-10-08 | 2019-10-02 | 日立建機株式会社 | Construction machinery |
-
1978
- 1978-08-10 JP JP11000878U patent/JPS588915Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5525699U (en) | 1980-02-19 |
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