JPH0710054Y2 - Synthetic resin air duct - Google Patents
Synthetic resin air ductInfo
- Publication number
- JPH0710054Y2 JPH0710054Y2 JP12707788U JP12707788U JPH0710054Y2 JP H0710054 Y2 JPH0710054 Y2 JP H0710054Y2 JP 12707788 U JP12707788 U JP 12707788U JP 12707788 U JP12707788 U JP 12707788U JP H0710054 Y2 JPH0710054 Y2 JP H0710054Y2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- air duct
- resin air
- duct
- duct body
- 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 - Lifetime
Links
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、自動車用エンジンの吸排気系に用いられる合
成樹脂製エアダクトに関する。TECHNICAL FIELD The present invention relates to a synthetic resin air duct used for an intake and exhaust system of an automobile engine.
従来の技術 中空成形は主にガラス容器に替わる食品や化粧品の容器
用として開発されたプラスチック成形技術である。近
年、自動車用エンジンの吸気ダクトにも中空成形品が採
用されつつある。Conventional technology Hollow molding is a plastic molding technology developed mainly for food and cosmetics containers that replace glass containers. In recent years, hollow molded products are being adopted also in intake ducts of automobile engines.
第４図は、加熱軟化させた熱可塑性パリソンに流体（空
気、水）を吹き込み、流体圧により膨張させて成形する
いわゆるブロー成形による合成樹脂製エアダクトの一例
を示す。この合成樹脂製エアダクトはダクト本体１を直
接エンジン本体側にネジ止めなどにより固定できるよう
に、金属製ナット２を埋込んだボス部３を所定位置に成
形した構造である。ボス部３は金属製ナット２を埋設し
て予め成型したインサート成形品を加熱されて軟化状態
にあるダクト本体１に溶着して成形される。FIG. 4 shows an example of a so-called blow molding synthetic resin air duct in which a fluid (air, water) is blown into a thermoplastic parison that has been softened by heating and expanded by fluid pressure to be molded. This synthetic resin air duct has a structure in which a boss portion 3 in which a metal nut 2 is embedded is molded at a predetermined position so that the duct body 1 can be directly fixed to the engine body side by screwing or the like. The boss portion 3 is formed by embedding the metal nut 2 and pre-molding an insert-molded product which is heated and welded to the duct body 1 in a softened state.
考案が解決しようとする課題 第４図に示す従来の合成樹脂製エアダクトでは、ダクト
本体１はほぼ平坦の表面を有し、ボス部３の溶着面も平
坦またはほぼ平坦であると、ボス部３の溶着は好ましい
形で行われる。しかし、ダクト本体１の表面が曲面状又
は球面状であると、溶着後の接合部にボイドとよばれる
未溶着空所４が生じ、所要の接合強度が得られない不具
合がある。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional synthetic resin air duct shown in FIG. 4, if the duct body 1 has a substantially flat surface and the welding surface of the boss portion 3 is also flat or substantially flat, Welding is carried out in a preferred manner. However, if the surface of the duct body 1 is curved or spherical, unwelded voids 4 called voids are formed in the joint after welding, and there is a problem that the required joint strength cannot be obtained.
本考案の目的は、未溶着不良が発生せず、十分な接合強
度を有する合成樹脂製エアダクトを提供することにあ
る。An object of the present invention is to provide a synthetic resin air duct that does not cause unwelding defects and has sufficient bonding strength.
問題点を解決するための手段 本考案による合成樹脂製エアダクトは、ダクト本体に付
着されるボス部の溶着座に複数のリブを放射状に形成し
た構成を有する。Means for Solving the Problems The synthetic resin air duct according to the present invention has a structure in which a plurality of ribs are radially formed on a welding seat of a boss portion attached to the duct body.
作用 ボス部が単体成形され、加熱により軟化したダクト本体
がブロー成形法などで中空成形される。ダクト本体があ
る程度軟化している状態で、ダクト本体の所定位置に溶
着座の各リブを押し当てるようにボス部が接合される。
これら各リブが軟らかいダクト本体の表面に食い込み、
ボイド等の未溶着空所を発生することなくボス部の溶着
座の接合面は一様且つ均一にダクト本体の表面に密着し
て溶着される。ダクト本体の固化に伴い、ボス部は溶着
座を介して強固に接合される。Function The boss portion is formed as a single body, and the duct body softened by heating is hollow formed by blow molding or the like. The boss is joined so that the ribs of the welding seat are pressed against the predetermined positions of the duct body while the duct body is softened to some extent.
Each of these ribs cut into the surface of the soft duct body,
The joining surface of the welding seat of the boss portion is uniformly and evenly adhered and welded to the surface of the duct body without generating unwelded voids such as voids. As the duct body is solidified, the boss portion is firmly joined via the welding seat.
実施例 以下、本考案による合成樹脂製エアダクトの実施例を第
１図〜第３図について説明する。Embodiment An embodiment of the synthetic resin air duct according to the present invention will be described below with reference to FIGS.
第１図において、例えばエルボ状のダクト本体10の所定
位置には、単体成形されたボス部20が溶着により接合さ
れる。このボス部20はダクト本体10と同一種または異種
のプラスチック成形品である。In FIG. 1, for example, a single-piece boss portion 20 is joined by welding to a predetermined position of an elbow-shaped duct body 10. The boss portion 20 is the same or different type of plastic molded product as the duct body 10.
第２図に示すように、ボス部20の中心部には金属製のナ
ット21がインサート成形により埋設されている。ボス部
20は鍔状の溶着座22を有する帽子形に成形されており、
溶着座22の内面22aはダクト本体10の曲面に密接する曲
率で凹状に成形され、この内面22aには中心部から多数
の凸状のリブ23が放射状に形成されている。As shown in FIG. 2, a metal nut 21 is embedded in the center of the boss portion 20 by insert molding. Boss
20 is formed in a hat shape having a collar-shaped welding seat 22,
The inner surface 22a of the welding seat 22 is formed in a concave shape with a curvature in close contact with the curved surface of the duct body 10, and a large number of convex ribs 23 are radially formed from the center of the inner surface 22a.
製造の際には、金属製ナット21を埋設したボス部20が単
体成形され、加熱されて軟化状態にあるダクト本体10が
パリソンからブロー成形される。ダクト本体10が軟化し
ている状態で、ダクト本体10の所定位置に溶着座22の各
リブ23を押し当ててボス部20が接合される。各リブ23が
軟らかいダクト本体10の表面に食い込み、ボス部20の溶
着座22の接合面が一様且つ均一にダクト本体10の表面に
密着した状態で溶着される。ダクト本体10の固化に伴
い、ボス部20は溶着座22を介して強固に接合される。ブ
ロー成形された合成樹脂製エアダクトは、ボス部20の金
属製ナット21にてボルトをねじ込むことによりエンジン
側に固定される。At the time of manufacture, the boss portion 20 in which the metal nut 21 is embedded is formed as a single body, and the duct main body 10 in a softened state by heating is blow-molded from the parison. With the duct body (10) softened, the ribs (23) of the welding seat (22) are pressed against predetermined positions of the duct body (10) to join the boss portion (20). The ribs 23 bite into the surface of the duct main body 10 that is soft, and the welding surfaces 22 of the boss portion 20 are welded in a state in which they are uniformly and evenly adhered to the surface of the duct body 10. With the solidification of the duct body 10, the boss portion 20 is firmly joined via the welding seat 22. The blow-molded synthetic resin air duct is fixed to the engine side by screwing a bolt with a metal nut 21 of the boss portion 20.
考案の効果 以上説明したように、本考案による合成樹脂製エアダク
トは、ダクト本体に密着されるボス部側の溶着座の内面
にリブが放射状に形成されてた構造であるので、ダクト
本体とボス部との溶着面間に未溶着空所が生せず、溶着
強度の高い製品が得られる。Effect of the Invention As described above, the synthetic resin air duct according to the present invention has a structure in which ribs are radially formed on the inner surface of the welding seat on the side of the boss that is in close contact with the duct body. No welded space is formed between the welded surface and the welded part, and a product with high weld strength can be obtained.
第１図及び第２図は、本考案による合成樹脂製エアダク
トの斜視図及び要部の断面斜視図、第３図は本考案の他
の実施例を示す断面斜視図、第４図は従来例の断面斜視
図を示す。 10……ダクト本体、20……ボス部、21……金属製ナッ
ト、22……溶着座、1 and 2 are a perspective view and a sectional perspective view of a main part of a synthetic resin air duct according to the present invention, FIG. 3 is a sectional perspective view showing another embodiment of the present invention, and FIG. 4 is a conventional example. FIG. 10 …… duct body, 20 …… boss part, 21 …… metal nut, 22 …… welding seat,
Claims (1)
複数のリブを放射状に形成したことを特徴とする合成樹
脂製エアダクト。1. An air duct made of synthetic resin, wherein a plurality of ribs are radially formed on a welding seat of a boss attached to the duct body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12707788U JPH0710054Y2 (en) | 1988-09-30 | 1988-09-30 | Synthetic resin air duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12707788U JPH0710054Y2 (en) | 1988-09-30 | 1988-09-30 | Synthetic resin air duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0250164U JPH0250164U (en) | 1990-04-09 |
| JPH0710054Y2 true JPH0710054Y2 (en) | 1995-03-08 |
Family
ID=31379176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12707788U Expired - Lifetime JPH0710054Y2 (en) | 1988-09-30 | 1988-09-30 | Synthetic resin air duct |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710054Y2 (en) |
-
1988
- 1988-09-30 JP JP12707788U patent/JPH0710054Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0250164U (en) | 1990-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3776185B2 (en) | Resin fuel container and manufacturing method thereof | |
| JPH0710054Y2 (en) | Synthetic resin air duct | |
| JPH0212813U (en) | ||
| JPH0712683Y2 (en) | Synthetic resin air duct | |
| JPH06156079A (en) | Sunvisor for use on vehicle | |
| JPH0712684Y2 (en) | Synthetic resin air duct | |
| JPS6357222A (en) | Manufacture of hollow body | |
| JP3174375B2 (en) | Primary molded product of bottle with handle and method of molding bottle with handle | |
| KR101961118B1 (en) | Plastic fuel tank for vehicle | |
| WO2021145167A1 (en) | Intake manifold | |
| JP2597913Y2 (en) | Hollow rubber molded product | |
| JPH0312092U (en) | ||
| JPH09166056A (en) | Resin intake manifold and its manufacture | |
| JP3668002B2 (en) | Manufacturing method of synthetic resin intake manifold | |
| JPS6393221U (en) | ||
| JP3590771B2 (en) | Blow molded article having welding flange | |
| JPH0339399Y2 (en) | ||
| JPS6441430U (en) | ||
| JPS6240906Y2 (en) | ||
| JPH04305435A (en) | Method for bonding synthetic resin parts | |
| JPS5913218Y2 (en) | helmet | |
| JPS5913388B2 (en) | Stretched hollow container with handle made of thermoplastic synthetic resin | |
| JPH04215945A (en) | Biaxially oriented blow-molded bottle with handle | |
| JPS61128495U (en) | ||
| JPH01102279U (en) |