JPS643812Y2 - - Google Patents
Info
- Publication number
- JPS643812Y2 JPS643812Y2 JP1984143415U JP14341584U JPS643812Y2 JP S643812 Y2 JPS643812 Y2 JP S643812Y2 JP 1984143415 U JP1984143415 U JP 1984143415U JP 14341584 U JP14341584 U JP 14341584U JP S643812 Y2 JPS643812 Y2 JP S643812Y2
- Authority
- JP
- Japan
- Prior art keywords
- intake duct
- resonator
- air cleaner
- cab
- space
- 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
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 101100494448 Caenorhabditis elegans cab-1 gene Proteins 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、自動車特に運転室下方にエンジン
が配置され、かつ吸気ダクトを設置する運転室と
荷台間のスペースが制限されたキヤブオーバ型ト
ラツクに好適なエアクリーナの吸気ダクトに関す
る。[Detailed description of the invention] [Industrial application field] This invention is applicable to automobiles, especially cab-over type trucks in which the engine is located below the driver's cab and the space between the driver's cab where an intake duct is installed and the cargo bed is limited. The present invention relates to a suitable air cleaner intake duct.
［従来技術］
自動車においては、高温になつたエンジンルー
ム内の空気をエアクリーナに導くとエンジンの性
能が低下するため、寒冷時以外は吸気ダクトによ
り外気を直接エアクリーナに吸込むようにしてい
るが、エアクリーナの吸気音が車室に透過するこ
とによつてこもり音を発生することがあり、この
対策として上記吸気ダクトに吸気音を低減させる
ためのレゾネータを取付けることがある。[Prior art] In automobiles, the performance of the engine deteriorates when the hot air inside the engine room is introduced into the air cleaner. Muffled noise may be generated due to sound passing into the vehicle interior, and as a countermeasure to this problem, a resonator may be installed in the intake duct to reduce intake noise.
従来、このレゾネータは吸気ダクトとは別部品
として設定されており、専用の設置スペースを要
することから、運転室下方にエンジンが配置さ
れ、かつ吸気ダクトを設置する運転室と荷台間の
スペースが制限されたキヤブオーバ型トラツクに
は設定が困難であつた。 Conventionally, this resonator was set up as a separate part from the intake duct and required a dedicated installation space, so the engine was placed below the driver's cab, and the space between the driver's cab and the cargo bed where the intake duct was installed was limited. It was difficult to set up the cab over type truck.
一方、エアクリーナの吸気ダクトは、吸気音低
減のためにはある程度長くすることが必要であ
り、車種によつて適正な長さが選定される。しか
しながら、吸気ダクトを設置するスペースは通常
上記のように極めて制限されているのでコンパク
トでかつダクト長を長くとることができる吸気ダ
クトが要求される。 On the other hand, the intake duct of an air cleaner needs to be long to some extent in order to reduce intake noise, and an appropriate length is selected depending on the type of vehicle. However, since the space for installing the intake duct is usually extremely limited as described above, an intake duct that is compact and can have a long duct length is required.
［考案の目的］
この考案は上述の問題点に鑑みてなされたもの
で、限られたスペース内でダクト長を比較的長く
とれ、しかもレゾネータのための専用の設置スペ
ースが不要で、上記キヤブオーバ型トラツクへの
レゾネータの設定を可能とする吸気ダクトを提供
することを目的とする。[Purpose of the invention] This invention was made in view of the above-mentioned problems. It allows a relatively long duct length within a limited space, and eliminates the need for a dedicated installation space for the resonator. It is an object of the present invention to provide an intake duct that allows a resonator to be installed in a truck.
［問題点を解決するための手段］
すなわち、この考案は一端がエンジンルーム外
の外気取入可能位置において開口され、かつ他端
がエアクリーナホースを介してエアクリーナに接
続される吸気ダクトであつて、上記吸気ダクトを
全体略コ字形に屈曲形成して、その空間部に吸気
ダクトと連通するレゾネータを配置するととも
に、これらの吸気ダクトとレゾネータを両者間に
連結リブを介在せしめて合成樹脂で一体成形した
ことを特徴とする。[Means for Solving the Problems] That is, this invention is an intake duct that has one end opened at a position outside the engine room where outside air can be taken in, and the other end connected to an air cleaner via an air cleaner hose, The above-mentioned intake duct is bent into a generally U-shape, and a resonator that communicates with the intake duct is arranged in the space, and the intake duct and resonator are integrally molded with synthetic resin with a connecting rib interposed between them. It is characterized by what it did.
［作用、効果］
上記のように、吸気ダクトを全体略コ字形に屈
曲形成して、その空間部に吸気ダクトと連通する
レゾネータを配置するとともに、これら吸気ダク
トとレゾネータを両者間に連結リブを介在せしめ
て合成樹脂で一体成形したことにより、吸気ダク
トとレゾネータが吸気ダクトの専有スペース内で
軽量かつコンバクトに一体化され、これによつて
レゾネータのための専用の設置スペースを不要に
なし得るとともに、吸気ダクトを設置する運転室
と荷台間のスペースが制限されたキヤブオーバ型
トラツクへのレゾネータの設定が可能となる。ま
た、全体略コ字形に屈曲形成した吸気ダクトは小
さいスペースでダクト長を比較的長くとれ、限ら
れたスペース内で吸気音低減のための適正長さを
確保するのが容易である。さらに、上記のように
一体化されたレゾネータ付き吸気ダクトは、強度
剛性面でも優れている。[Operations and Effects] As described above, the intake duct is bent into a generally U-shape, and the resonator that communicates with the intake duct is disposed in the space, and a connecting rib is provided between the intake duct and the resonator. By integrally molding the intake duct and resonator with synthetic resin, the intake duct and resonator can be integrated in a lightweight and compact manner within the exclusive space of the intake duct, thereby making it possible to eliminate the need for a dedicated installation space for the resonator. This makes it possible to install a resonator in a cab-over type truck where the space between the driver's cab and the loading platform where the intake duct is installed is limited. Furthermore, the intake duct, which is bent into a generally U-shape as a whole, can have a relatively long duct length in a small space, and it is easy to secure an appropriate length for reducing intake noise within a limited space. Furthermore, the intake duct with the resonator integrated as described above is excellent in terms of strength and rigidity.
［実施例］
以下、図面によりこの考案の一実施例を詳細に
説明する。[Example] Hereinafter, an example of this invention will be described in detail with reference to the drawings.
第４図はキヤブオーバ型トラツクの側面図であ
つて、運転室１の下方にはエンジンが配置される
とともに、その後方に若干の間隙を有して荷台２
が取付けられている。エアクリーナ４の吸気ダク
ト６は上記運転室１と荷台２の間隙部に設置さ
れ、その一端が該間隙部において開口されるとと
もに、他端がエアクリーナホース５を介してエア
クリーナ４が接続されている。 FIG. 4 is a side view of a cab-over type truck, in which an engine is arranged below the driver's cab 1, and a loading platform 2 is placed behind it with a slight gap.
is installed. The air intake duct 6 of the air cleaner 4 is installed in the gap between the driver's cab 1 and the loading platform 2, one end of which is opened in the gap, and the other end connected to the air cleaner 4 via the air cleaner hose 5.
運転室１と荷台２の間隙部にはこの部分で露出
するエンジン上に可燃物が落下するのを防止する
ための遮蔽板３（第２図参照）が、その一端を運
転室１の後壁１ａに固着して設けられており、上
記吸気ダクト６は実質的には運転室１と荷台２お
よび遮蔽板３で囲まれた狭いスペース内に設置さ
れる。 In the gap between the driver's cab 1 and the loading platform 2, there is a shielding plate 3 (see Figure 2) to prevent combustible materials from falling onto the engine exposed in this area. The intake duct 6 is installed in a narrow space substantially surrounded by the driver's cab 1, the loading platform 2, and the shielding plate 3.
第１図ないし第３図において、吸気ダクト６は
全体略コ字形に屈曲形成され、その水平部６ａと
両垂直部６ｂ，６ｃとで囲まれた空間部に該吸気
ダクト６と連通するレゾネータ１０が配置される
とともに、これら吸気ダクト６とレゾネータ１０
は両者間に薄肉の連結リブ７を介在せしめて合成
樹脂で一体成形されている。一体成形法としては
ブロー成形法が知られており、これによれば簡単
かつ安価に製造できる。 1 to 3, the intake duct 6 is bent into a generally U-shape, and a resonator 10 communicating with the intake duct 6 is provided in a space surrounded by a horizontal portion 6a and both vertical portions 6b and 6c. are arranged, and these intake ducts 6 and resonators 10
are integrally molded from synthetic resin with a thin connecting rib 7 interposed between them. A blow molding method is known as an integral molding method, and it can be manufactured easily and inexpensively.
吸気ダクト６は一方の垂直部６ｂを比較的長く
形成してその下端をエアクリーナホース５との接
続端６ｅとしてあり、他方の垂直部６ｃ下端が外
気吸入口とされている。 The intake duct 6 has one vertical portion 6b formed relatively long, the lower end of which serves as a connecting end 6e with the air cleaner hose 5, and the lower end of the other vertical portion 6c serves as an outside air intake port.
レゾネータ１０は所定容積を有する容器状に形
成され、またその片面は吸気ダクト設置位置にお
ける運転室１の後端１ｂ形状に合致する形状に形
成されている。そして、レゾネータ１０の吸気ダ
クト６との連通部６ｄはエアクリーナホース５と
の接続端６ｅを有する垂直部６ｂとの間に設けら
れ、この連通部６ｄを除くレゾネータ１０と吸気
ダクト６間に介在せしめられた連結リブ７によ
り、吸気ダクト６とレゾネータ１０が強固に連結
一体化される。 The resonator 10 is formed in the shape of a container with a predetermined volume, and one side of the resonator 10 is formed in a shape that matches the shape of the rear end 1b of the driver's cab 1 at the installation position of the intake duct. The communication portion 6d of the resonator 10 with the intake duct 6 is provided between the vertical portion 6b having the connection end 6e with the air cleaner hose 5, and is interposed between the resonator 10 and the intake duct 6 except for the communication portion 6d. The air intake duct 6 and the resonator 10 are firmly connected and integrated by the connecting rib 7 .
連結リブ７には複数のボルト挿通孔８が設けら
れ、このボルト挿通孔８に挿通されるボルト１９
によつて、一体成形された吸気ダクト６とレゾネ
ータ１０が、運転室１の後壁１ａにクツシヨンゴ
ム９を介して弾性的に支持されるようになつてい
る。 A plurality of bolt insertion holes 8 are provided in the connecting rib 7, and bolts 19 are inserted through the bolt insertion holes 8.
As a result, the integrally molded intake duct 6 and resonator 10 are elastically supported on the rear wall 1a of the driver's cab 1 via the cushion rubber 9.
吸気ダクト６とエアクリーナ４とを接続するエ
アクリーナホース５は可撓性を有しており、その
上端が吸気ダクト６の接続端６ｅに、またＬ字状
に屈曲する下端５ｃがエアクリーナ４のインレツ
トパイプ４ａにそれぞれバンドクランプ（図示せ
ず）により接続される。なお、エアクリーナ４の
アウトレツトパイプ４ｂは図示しない別のホース
によりエンジン側に接続されている。 The air cleaner hose 5 that connects the intake duct 6 and the air cleaner 4 is flexible, and its upper end is connected to the connection end 6e of the intake duct 6, and its lower end 5c bent in an L-shape is connected to the inlet of the air cleaner 4. Each is connected to the pipe 4a by a band clamp (not shown). Note that the outlet pipe 4b of the air cleaner 4 is connected to the engine side through another hose (not shown).
上記構成において、エンジン作動中は吸気ダク
ト６の外気吸入口から外気が吸込まれ、吸気ダク
ト６およびエアクリーナホース５を経由してエア
クリーナ４内に吸引されるが、その際の吸気音は
レゾネータ１０によつて効果的に低減される。な
お、レゾネータは周知のようにヘルムホルツの共
鳴の原理を応用して特定周波数の吸気音を低減さ
せるものであり、吸気音低減作用の細部はこの考
案の要旨と直接関係がないため説明を省略する
が、吸気音をより効果的に低減させるためにレゾ
ネータの容積、連通部の連通孔の径および長さが
選定されることは言うまでもない。 In the above configuration, while the engine is operating, outside air is sucked in from the outside air intake port of the intake duct 6 and sucked into the air cleaner 4 via the intake duct 6 and the air cleaner hose 5. Therefore, it is effectively reduced. As is well known, a resonator applies the principle of Helmholtz resonance to reduce intake noise at a specific frequency, and the details of the intake noise reduction effect are not directly related to the gist of this invention, so a description will be omitted. However, it goes without saying that the volume of the resonator and the diameter and length of the communication hole of the communication portion are selected in order to more effectively reduce intake noise.
以上のように、この考案によれば、吸気ダクト
とレゾネータが軽量かつコンパクトに一体化され
ているので、レゾネータのための設置スペースを
特別に要せず、したがつて吸気ダクトを設置する
運転室と荷台間のスペースが制限されていて従来
レゾネータの設定が困難であつたキヤブオーバ型
トラツクへのレゾネータの設定が可能となる。ま
た、全体略コ字形に屈曲形成した吸気ダクトは小
さいスペースでダクト長を比較的長くでき、限ら
れたスペース内で吸気音低減のための適正長さを
確保するのが容易である。 As described above, according to this invention, the intake duct and the resonator are integrated in a lightweight and compact manner, so no special installation space is required for the resonator, and therefore, the air intake duct can be installed in the driver's cabin. It is now possible to install a resonator in a cab-over type truck, where it has been difficult to install a resonator in the past due to the limited space between the truck and the loading platform. Further, the intake duct, which is bent into a generally U-shape as a whole, can have a relatively long duct length in a small space, and it is easy to secure an appropriate length for reducing intake noise within a limited space.
さらに、吸気ダクトとレゾネータは両者間に連
絡リブを介在せしめて一体成形されているので、
強度剛性面でも優れている。 Furthermore, the intake duct and resonator are integrally molded with a connecting rib between them.
It also has excellent strength and rigidity.
図面はこの考案に一実施例を示すもので、第１
図はこの考案の吸気ダクトの全体斜視図、第２図
は第１図のＥ−Ｅ矢視線に沿う断面図、第３図は
同じく第１図のＦ−Ｆ矢視線に沿う断面図、第４
図はキヤブオーバ型トラツクの側面図である。
１……運転室、２……荷台、４……エアクリー
ナ、５……エアクリーナホース、６……吸気ダク
ト、６ａ……水平部、６ｂ，６ｃ……垂直部、６
ｄ……連通部、６ｅ……接続端、７……連結リ
ブ、１０……レゾネータ。
The drawing shows one embodiment of this invention.
The figure is an overall perspective view of the intake duct of this invention, FIG. 4
The figure is a side view of a cab-over type truck. DESCRIPTION OF SYMBOLS 1... Driver's cab, 2... Loading platform, 4... Air cleaner, 5... Air cleaner hose, 6... Intake duct, 6a... Horizontal part, 6b, 6c... Vertical part, 6
d...Communication portion, 6e...Connection end, 7...Connection rib, 10...Resonator.
Claims (1)
おいて開口され、かつ他端がエアクリーナホース
を介してエアクリーナに接続される吸気ダクトで
あつて、上記吸気ダクトを全体略コ字形に屈曲形
成して、その空間部に該吸気ダクトと連通するレ
ゾネータを配置するとともに、これら吸気ダクト
とレゾネータを両者間に連結リブを介在せしめて
合成樹脂で一体成形したことを特徴とするレゾネ
ータ付き吸気ダクト。 An intake duct having one end opened at a position outside the engine room where outside air can be taken in, and the other end connected to the air cleaner via an air cleaner hose, the intake duct being bent into a generally U-shape as a whole. An intake duct with a resonator, characterized in that a resonator communicating with the intake duct is disposed in a space, and the intake duct and the resonator are integrally molded from synthetic resin with a connecting rib interposed between them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984143415U JPS643812Y2 (en) | 1984-09-20 | 1984-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984143415U JPS643812Y2 (en) | 1984-09-20 | 1984-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6157162U JPS6157162U (en) | 1986-04-17 |
| JPS643812Y2 true JPS643812Y2 (en) | 1989-02-01 |
Family
ID=30701712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984143415U Expired JPS643812Y2 (en) | 1984-09-20 | 1984-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643812Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0622858B2 (en) * | 1987-06-26 | 1994-03-30 | 小島プレス工業株式会社 | Manufacturing method of resin silencer |
| JP6501184B2 (en) * | 2015-04-30 | 2019-04-17 | ダイハツ工業株式会社 | Internal combustion engine for vehicles |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330660A (en) * | 1976-09-02 | 1978-03-23 | Tousen Purasuto Kk | Ventilating pipe with synthetic resin silencer |
| JPS549317A (en) * | 1977-06-23 | 1979-01-24 | Honda Motor Co Ltd | Suction noise muffler for internal combustion engine |
| JPS5535368B2 (en) * | 1972-05-26 | 1980-09-12 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59979Y2 (en) * | 1978-08-29 | 1984-01-12 | トヨタ自動車株式会社 | Cool air intake structure |
| JPS59111954U (en) * | 1983-01-18 | 1984-07-28 | トヨタ自動車株式会社 | Automotive air cleaner outside air intake hose |
-
1984
- 1984-09-20 JP JP1984143415U patent/JPS643812Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535368B2 (en) * | 1972-05-26 | 1980-09-12 | ||
| JPS5330660A (en) * | 1976-09-02 | 1978-03-23 | Tousen Purasuto Kk | Ventilating pipe with synthetic resin silencer |
| JPS549317A (en) * | 1977-06-23 | 1979-01-24 | Honda Motor Co Ltd | Suction noise muffler for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157162U (en) | 1986-04-17 |
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