JPH0438956B2 - - Google Patents
Info
- Publication number
- JPH0438956B2 JPH0438956B2 JP59104924A JP10492484A JPH0438956B2 JP H0438956 B2 JPH0438956 B2 JP H0438956B2 JP 59104924 A JP59104924 A JP 59104924A JP 10492484 A JP10492484 A JP 10492484A JP H0438956 B2 JPH0438956 B2 JP H0438956B2
- Authority
- JP
- Japan
- Prior art keywords
- connecting member
- sealing resin
- hollow body
- hollow
- duct
- 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
- 229920005989 resin Polymers 0.000 claims description 52
- 239000011347 resin Substances 0.000 claims description 52
- 238000007789 sealing Methods 0.000 claims description 39
- 239000012530 fluid Substances 0.000 claims description 10
- 238000000465 moulding Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 230000008878 coupling Effects 0.000 description 10
- 238000010168 coupling process Methods 0.000 description 10
- 238000005859 coupling reaction Methods 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000000071 blow moulding Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、気体や液体など、流体の通路とし
て使用するダクトなどの中空体の壁面にジヨイン
ト部を設けたものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hollow body such as a duct, which is used as a passage for fluid such as gas or liquid, and has a joint portion provided on the wall thereof.
従来技術
この種の中空体の一例として、自動車のエンジ
ンルームに使用する吸気ダクトに、ジヨイント部
を形成した従来技術を第10図及び第11図に示
す。Prior Art As an example of this type of hollow body, FIGS. 10 and 11 show a prior art in which a joint portion is formed in an intake duct used in the engine room of an automobile.
第10図は吸気ダクトaを成形するとき、同時
に、ダクトaとは別体のパイプ状の接続部材bを
一体化する工程である。接続部材として別体のも
のを使用する必要性は、耐熱性とか機械強度など
の物理特性をダクトaの材料と変えたい場合、接
続部材内径部などの寸法精度を確保したい場合等
に頻繁に生ずる。 FIG. 10 shows a process in which a pipe-shaped connecting member b, which is separate from the duct a, is simultaneously integrated with the duct a when the intake duct a is molded. The need to use a separate connection member often arises when you want to change the physical properties such as heat resistance or mechanical strength from the material of duct a, or when you want to ensure dimensional accuracy of the inner diameter of the connection member, etc. .
ところで、この別体の接続部材bは、ダクトa
の成形時に同時にダクトaと一体化されている。
すなわちダクトaは、ポリプロピレンなどの熱可
塑性樹脂をブロー成形して中空のパイプ状とした
ものであるが、ブロー成形のとき、予じめ型内に
パイプ状の接続部材bをセツトしておき、インサ
ート成形して一体化するのである。これにより接
続部材bはダクトaの側壁に埋設一体化され、し
かも連結部は完全にシールされる。しかしこのま
までは、接続部材bの埋設されている端部は、ダ
クトaの側壁の一部で形成する被覆cにより覆わ
れ、密閉されたままである。 By the way, this separate connecting member b is connected to the duct a.
It is integrated with duct a at the same time when it is molded.
That is, the duct a is made into a hollow pipe shape by blow molding a thermoplastic resin such as polypropylene, but at the time of blow molding, a pipe-shaped connecting member b is set in the mold in advance, It is integrated by insert molding. As a result, the connecting member b is embedded and integrated in the side wall of the duct a, and the connecting portion is completely sealed. However, as it is, the buried end of the connecting member b remains covered and sealed by the covering c formed by a part of the side wall of the duct a.
そこで被覆cを除去し接続部材bをダクトaと
連通させる工程が必要となる。第11図はこれを
示す。すなわち接続部材bの開口部よりドリルd
などの工具を挿入し、被覆cを除去してダクトa
内に開口連通させる。このとき開口部eの周囲に
多少のバリfが生じる。このバリfは、製品の仕
上げ時に、ダクトaの開口部より挿入した適当な
器具を用いて除去される。また被覆cの切削屑g
はダクトaの内部に落ちているが、これも同様に
製品の仕上げ時に除去される。 Therefore, a step of removing the covering c and communicating the connecting member b with the duct a is required. FIG. 11 shows this. In other words, the drill d is inserted from the opening of the connecting member b.
Insert a tool such as, remove the covering c and duct a.
The opening communicates with the inside. At this time, some burrs f are generated around the opening e. This burr f is removed using a suitable tool inserted through the opening of the duct a when finishing the product. Also, cutting waste g of coating c
has fallen into the interior of duct a, but this is also removed when the product is finished.
なお、実公昭53−38344号公報には、予め枠部
材にパイプ継手を抜け出し不能に係止し、その後
両者の連結部にシーリング材を充填するものが示
されている。また、特開昭51−24917号公報には
中空部材に枝管を連通状態で溶接するとともに、
両者間をポリエステル樹脂を注入して形成された
リブにより連結するものが示されている。 Incidentally, Japanese Utility Model Publication No. 53-38344 discloses a pipe joint in which a pipe joint is fixed in advance to a frame member so as not to be able to come off, and then a sealing material is filled in the joint between the two. Furthermore, in Japanese Patent Application Laid-Open No. 51-24917, a branch pipe is welded to a hollow member in a communicating state, and
What is shown is a rib formed by injecting polyester resin to connect the two.
発明が解決しようとする問題点
ところで、このようにして発生したバリf、切
削屑gの一部がダクトaの内部に残留していた場
合、これらがダクトa内を随時移動して他部品に
付着すれば、これら部品の性能に悪影響を与えか
ねない。そこでバリfや切削屑gをダクトaの内
部から完全に除去する必要が生じる。Problems to be Solved by the Invention By the way, if some of the burrs f and cutting waste g generated in this way remain inside the duct a, they may move inside the duct a from time to time and may damage other parts. Adhesion can adversely affect the performance of these parts. Therefore, it becomes necessary to completely remove the burrs f and cutting waste g from the inside of the duct a.
しかしバリfや切削屑gを完全に除去しようと
する場合に著しく困難な問題が生じる。すなわ
ち、ダクトaの開口部から内部を覗きながらバリ
fや切削屑gを除去する作業は非常に面倒であつ
て、作業効率も悪く容易でないのである。特にダ
クトaが複雑に湾曲などしていれば作業の困難性
は飛躍的に増加する。 However, an extremely difficult problem arises when attempting to completely remove the burrs f and cutting waste g. That is, the work of removing the burrs f and cutting waste g while looking into the interior through the opening of the duct a is extremely troublesome, the work efficiency is poor, and it is not easy. In particular, if the duct a is complicatedly curved, the difficulty of the work increases dramatically.
また、前述の各公報記載のものは、いずれも連
結部へ樹脂等を充填する前に、パイプ継手や枝管
を枠部材や中空部材に対して抜け出し不能に取付
けてあるため、充填物質が枠部材や中空部材の表
面から剥離したり、パイプ継手や枝管が充填物質
から抜け出すおそれがない。 In addition, in all of the above-mentioned publications, the pipe fittings and branch pipes are attached to the frame member or hollow member so that they cannot be removed before filling the connecting part with resin, etc., so the filling material is There is no risk of peeling off from the surface of the member or hollow member, or of pipe fittings or branch pipes coming out of the filling material.
しかし、構造などの制約により中空部材に対し
て接続部材を予め抜け出し不能に取付できない場
合があり、そのため折角充填物質で連結しても中
空部材と接続部材の分離するおそれが残ることが
ある。そこで、このような場合であつても接続部
材を中空部材へ分離不能に確実に結合できること
が望まれる。 However, due to structural constraints, it may not be possible to attach the connecting member to the hollow member in advance, so that the connecting member cannot be removed from the hollow member. Therefore, even if the connecting member is connected with the filling material, there is a risk that the hollow member and the connecting member may separate. Therefore, even in such a case, it is desirable to be able to reliably connect the connecting member to the hollow member in an inseparable manner.
問題点を解決するための手段
本発明はかかる問題を解決するものであり、そ
の手段は以下の構成による。Means for Solving the Problems The present invention solves these problems, and its means have the following configuration.
すなわち、両端を開口する中空の接続部材を壁
面に連結することによりジヨイント部を設けた中
空体において、予じめ接続部材に対応させて中空
体の壁面に設けた開口に、接続部材の一端を挿入
して接続部材を抜け出し自由な状態で中空体内部
と連通させ、この中空体と接続部材の連結部分に
流動性樹脂を供給し、固化させてなる密封樹脂部
を設けるとともに、中空体と接続部材のそれぞれ
に密封樹脂部中に埋設されて抜け出し不能に食い
込む抜け止め部を設け、これらの抜け止め部を介
して密封樹脂部により接続部材を中空体の壁面へ
分離不能に固定することを特徴とするものであ
る。 That is, in a hollow body in which a joint portion is provided by connecting a hollow connecting member that is open at both ends to a wall surface, one end of the connecting member is inserted into an opening provided in the wall surface of the hollow body in advance to correspond to the connecting member. The connecting member is inserted and the connecting member is pulled out and communicated with the inside of the hollow body in a free state, and a fluid resin is supplied to the joint between the hollow body and the connecting member and solidified to provide a sealing resin part, and the connecting member is connected to the hollow body. Each member is provided with a retaining part that is embedded in the sealing resin part and bites into the sealing resin part, and the connecting member is irremovably fixed to the wall surface of the hollow body by the sealing resin part through these retaining parts. That is.
作 用
本発明のジヨイント部は、中空体の壁面に設け
た開口に、予め開口されている接続部材の端部を
挿入し、これを流動性樹脂により被覆、固定して
一体化したものであるから、一体化後に接続部材
を中空体内部に連通させるための加工を必要とせ
ずに連通できる。また、密封樹脂部により接続部
を中空体壁面に固定し、同時に連結部を被覆して
完全にシールし、内部のエア等が漏れることを防
ぐ。Function The joint part of the present invention is made by inserting the previously opened end of the connecting member into the opening provided in the wall of the hollow body, and covering and fixing this with a fluid resin to integrate the joint part. Therefore, communication can be achieved without requiring any processing for making the connecting member communicate with the inside of the hollow body after integration. Further, the connecting portion is fixed to the wall surface of the hollow body by the sealing resin portion, and at the same time, the connecting portion is covered and completely sealed to prevent internal air from leaking.
このとき、接続部材と中空部材のそれぞれに抜
け止め部が設けられているので、この抜け止め部
が密封樹脂中へ埋設一体化されて抜け出し不能に
食い込む。したがつて、接続部材に抜け出し方向
の力が加わつても、接続部材は密封樹脂と一体で
なければ抜け出せず、かつ密封樹脂部は抜け止め
部材を介して中空部材側へ分離不能に一体化され
ているので、接続部材は中空部材に対して分離不
能に固定される。 At this time, since the connecting member and the hollow member are each provided with a retaining portion, the retaining portion is embedded and integrated into the sealing resin and bites into the sealing resin so that it cannot come out. Therefore, even if a force is applied to the connecting member in the direction of pulling out, the connecting member cannot be pulled out unless it is integrated with the sealing resin, and the sealing resin part is irreparably integrated with the hollow member through the retaining member. As a result, the connecting member is irremovably fixed to the hollow member.
実施例
第1図乃至第6図は、自動車のエンジンに使用
する吸気ダクトの一部をなすエアフローチユーブ
に、本発明を適用した実施例である。もちろんこ
のエアフローチユーブは本発明における中空体に
相当する。Embodiment FIGS. 1 to 6 show an embodiment in which the present invention is applied to an air flow tube forming a part of an intake duct used in an automobile engine. Of course, this air flow tube corresponds to the hollow body in the present invention.
第2図はエアフローチユーブの全体を示してい
る。エアフローチユーブの本体1はポリプロピレ
ン製で剛性のあるチユーブであり、ほぼU字状を
している。その両端2,3は開口し、一端はエア
クリーナーへ、他端はエンジン本体又はその付属
機器へと接続している。また一端2は配置の関係
より楕円状の断面をなし、他端3は円形断面とな
つている。さらに湾曲部4の外
周側のパーテイングライン5上には、ジヨイント
部6を形成してある。ジヨイント部6は、本体1
の外周の一部を膨出して形成した膨出部7、この
膨出部7頂部に流動性樹脂により一体化して形成
した密封樹脂部8及びこの密封樹脂部8に内包さ
れかつ一端を突出しているパイプ状の接続部材
9,10並びに同様に密封樹脂部8に内包されか
つ膨出部7と一体化された結合部材11よりな
る。 FIG. 2 shows the entire air flow tube. The main body 1 of the air flow tube is a rigid tube made of polypropylene, and is approximately U-shaped. Both ends 2 and 3 are open, and one end is connected to an air cleaner, and the other end is connected to the engine body or its auxiliary equipment. Also, one end 2 has an elliptical cross section due to the arrangement, and the other end 3 has a circular cross section. Furthermore, a joint portion 6 is formed on the parting line 5 on the outer peripheral side of the curved portion 4. The joint part 6 is connected to the main body 1
A bulging part 7 formed by bulging out a part of the outer periphery of the bulging part 7, a sealing resin part 8 formed integrally with the top of the bulging part 7 with a fluid resin, and a sealing resin part 8 enclosed in the sealing resin part 8 with one end protruding. It consists of pipe-shaped connecting members 9 and 10 as well as a connecting member 11 which is similarly enclosed in the sealing resin part 8 and integrated with the bulging part 7.
ジヨイント部6の詳細な内部構造を第1図に示
す。接続部材9,10はガラス繊維入の耐熱グレ
ートのポリプロピレン製パイプであり、各接続部
材にはそれぞれ抜け止めのフランジ12,12を
形成し、また両接続部材をフランジ状の連結部1
3で連結一体化して成形してある(第3図参照)。
結合部材11も同様に耐熱グレートのポリプロピ
レン製であり、開口14,15の近くにインサー
ト成形で植設され、膨出部7の頂面より外方へ突
出している。また結合部材11の頂部は膨大部を
なしている。これら結合部材11の膨大部並びに
フランジ12,12はいずれも接続部材9,10
をエアフローチユーブの本体1に対して挿入接続
する方向と直交する方向へ延出しており、本願に
おける抜け止め部の一例に相当する。 The detailed internal structure of the joint portion 6 is shown in FIG. The connecting members 9 and 10 are heat-resistant grade polypropylene pipes containing glass fiber, and each connecting member is provided with a flange 12 to prevent it from coming off, and both connecting members are connected to a flange-shaped connecting portion 1.
3 and are integrally molded (see Fig. 3).
The coupling member 11 is similarly made of heat-resistant grade polypropylene, is implanted by insert molding near the openings 14 and 15, and protrudes outward from the top surface of the bulge 7. Further, the top of the coupling member 11 forms an enlarged portion. The enlarged portions and flanges 12, 12 of these connecting members 11 are connected to the connecting members 9, 10.
The air flow tube extends in a direction perpendicular to the direction in which it is inserted and connected to the main body 1 of the air flow tube, and corresponds to an example of the retaining portion in the present application.
接続部材9,10の一端部を膨出部7の頂面に
形成された開口14,15(第3図参照)に挿入
して、連結部13を膨出部7の頂面と接触させた
状態で、接続部材9,10と開口14,15との
連結部分の周囲に、結合部材11を含んで射出成
形し、固化させて密封樹脂部8を形成してある。 One end of the connecting members 9, 10 was inserted into the openings 14, 15 (see FIG. 3) formed on the top surface of the bulging portion 7, and the connecting portion 13 was brought into contact with the top surface of the bulging portion 7. In this state, the sealing resin portion 8 is formed by injection molding including the connecting member 11 around the connecting portion between the connecting members 9, 10 and the openings 14, 15, and solidifying it.
密封樹脂部8は膨出部7、接続部材9,10及
び結合部材11を内包し、かつこれらと密着一体
化している。これにより連結部分をシールしエア
漏れを防ぎ、かつ結合部材11の膨大部が密封樹
脂部8内にあるから、結合部材11により膨出部
7と密封樹脂部8とを分離可能に結合し、ジヨイ
ント部6を強固にしている。またフランジ12、
連結部13も密封樹脂部8内に一体成形されて内
包されているから、接続部材9.10が密封樹脂
部8から抜け出すことはない。 The sealing resin portion 8 includes the bulging portion 7, the connecting members 9, 10, and the coupling member 11, and is closely integrated with these. This seals the connecting portion and prevents air leakage, and since the bulging portion of the coupling member 11 is within the sealing resin portion 8, the bulging portion 7 and the sealing resin portion 8 are separably coupled by the coupling member 11, The joint part 6 is strengthened. Also, the flange 12,
Since the connecting portion 13 is also integrally molded and enclosed within the sealing resin portion 8, the connecting members 9, 10 will not come out from the sealing resin portion 8.
なお、16,17は、本体1に対しそれぞれパ
ーテイングライン5上にインサートしたフツクピ
ン及びボスであり、ボス17には箱形状のダンパ
ーボツクス18を取付けてある。 Reference numerals 16 and 17 are hook pins and bosses inserted on the parting line 5 of the main body 1, respectively, and a box-shaped damper box 18 is attached to the boss 17.
ダンパーボツクス18には一体的にパイプ1
9,19が形成してあり、第2図に鎖線で示すよ
うに、接続部材10と一つのパイプ19を接続し
て本体1とダンパーボツクス18とを連通させ、
さらに他のパイプ19から制御弁を介してエンジ
ンの絞り弁下流側吸気系に吸入される際に発生す
る吸気音を減少させている。また接続部材9は他
のエンジン制御機器と接続している。 Pipe 1 is integrally attached to damper box 18.
9 and 19 are formed, and as shown by the chain line in FIG. 2, the connecting member 10 and one pipe 19 are connected to communicate the main body 1 and the damper box 18,
Furthermore, the intake noise generated when the intake air is drawn from another pipe 19 through the control valve into the intake system downstream of the throttle valve of the engine is reduced. Further, the connecting member 9 is connected to other engine control equipment.
次に第3図乃至第6図によりジヨイント部6の
形成方法を説明する。 Next, a method for forming the joint portion 6 will be explained with reference to FIGS. 3 to 6.
まず第3図に示すように本体1をブロー成形す
る。このとき膨出部7の形成及び結合部材11そ
の他のインサートを同時に行なうことは前記の通
りである。なおこの成形方法は任意であつて、成
形品の形状等により、適宜射出成形などの方法が
採用できる。膨出部7の開口14,15は本体1
の成形後又は成形と同時に開口させる。また本体
1とは別に接続部材9,10及びダンパーボツク
ス18を成形しておく。続いて接続部材9,10
の一端部を開口14,15に挿入して連結部13
を膨出部7の頂面に密接させて固定する。第4図
は接続部材9,10を開口14,15に挿入固定
した状態を示す第1図相当部分の断面図である。
この状態では、接続部材9,10は膨出部7に対
して挿入方向に位置決めされ、かつ抜け出し自由
になつている。 First, the main body 1 is blow molded as shown in FIG. At this time, as described above, the formation of the bulging portion 7 and the insertion of the coupling member 11 and other inserts are performed at the same time. Note that this molding method is arbitrary, and methods such as injection molding can be adopted as appropriate depending on the shape of the molded product. The openings 14 and 15 of the bulging portion 7 are connected to the main body 1.
Open after or at the same time as the molding. Further, the connecting members 9 and 10 and the damper box 18 are molded separately from the main body 1. Next, connecting members 9 and 10
Insert one end into the openings 14 and 15 to connect the connecting part 13.
is fixed in close contact with the top surface of the bulge 7. FIG. 4 is a sectional view of a portion corresponding to FIG. 1, showing a state in which the connecting members 9 and 10 are inserted and fixed into the openings 14 and 15.
In this state, the connecting members 9 and 10 are positioned in the insertion direction with respect to the bulge 7 and can be freely removed.
次に接続部材9,10と膨出部7との連結部分
及び結合部材11の周囲を覆うように金型20を
固定し、射出成形して密封樹脂部8を形成する
(第5,6図)。この金型20の構造は第5図に示
してある。金型20の膨出部7と対面する側には
密封樹脂部8に対応する凹部21を設け、周囲を
周壁22としている。また金型20の中央部には
接続部材9,10に対応する開口23,24を設
け、接続部材9,10を挿入できるようになつて
いる。 Next, a mold 20 is fixed so as to cover the connecting portion between the connecting members 9, 10 and the bulging portion 7 and the periphery of the connecting member 11, and injection molding is performed to form the sealing resin portion 8 (Figs. 5 and 6). ). The structure of this mold 20 is shown in FIG. A recess 21 corresponding to the sealing resin part 8 is provided on the side of the mold 20 facing the bulging part 7, and a peripheral wall 22 surrounds the mold 20. Furthermore, openings 23 and 24 corresponding to the connecting members 9 and 10 are provided in the center of the mold 20 so that the connecting members 9 and 10 can be inserted therein.
第4図及び第5図に示すように、開口23,2
4の周壁22の先端から軸方向の長さL1は、接
続部材9,10の、膨出部7から先端までの長さ
L2と等しくなつている。金型20には凹部21
と反対側にも凹部25が形成され、凹部25内に
は周壁26に案内されるスライダー27を設け
る。スライダー27はロツド28を介して油圧機
構(図示せず)に連結し、図の上下方向に凹部2
5内を可動となつている。またスライダー27に
は、開口23,24に向つて、ピン29,30を
植設してある。ピン29,30は、ほぼ接続部材
9,10の内径に等しくなつており、接続部材
9,10に嵌合して接続部材9,10に対する密
封樹脂部8の位置を第5図の前後左右方向に固定
する様に作用する。 As shown in FIGS. 4 and 5, the openings 23, 2
The length L1 in the axial direction from the tip of the peripheral wall 22 of No. 4 is equal to the length L2 of the connecting members 9 and 10 from the bulge 7 to the tip. The mold 20 has a recess 21
A recess 25 is also formed on the opposite side, and a slider 27 guided by a peripheral wall 26 is provided within the recess 25. The slider 27 is connected to a hydraulic mechanism (not shown) via a rod 28, and has a recess 2 in the vertical direction in the figure.
It is movable within 5. Further, pins 29 and 30 are implanted in the slider 27 toward the openings 23 and 24. The pins 29, 30 have an inner diameter approximately equal to the inner diameter of the connecting members 9, 10, and are fitted into the connecting members 9, 10 to change the position of the sealing resin part 8 relative to the connecting members 9, 10 in the front, rear, left, and right directions in FIG. It acts to fix it in place.
今、金型20を膨出部7の頂面上に置き、周壁
22を膨出部7に圧接し、同時にスライダー27
を第5図の矢印方向に押し下げれば、ピン29,
30の先端が接続部材9,10の中空部内に侵入
する。このままスライダー27を下げ続ければ、
スライダー27は接続部材9,10の先端に接触
するまで下がつて停止する。この状態が第6図で
ある。このとき接続部材9,10はスライダー2
7により、膨出部7上に密着固定され、周壁22
も膨出部7と密着しているから、凹部21は射出
成形用の空間を構成できる。このとき必要に応じ
て、本体1内に治具を挿入して、膨出部7の内部
に突出している接続部材9,10の端部あるいは
膨出部7の内壁を
支持、固定してもよい。この状態を保つたまま、
第6図のように、凹部21内に流動性樹脂として
溶融ポリプロピレン31を射出成形により供給す
る。これをそのまま冷却、固化させれば、溶融ポ
リプロピレン31は密封樹脂部8を形成し、接続
部材9,10を内包したまま膨出部7と一体化
し、結局シール性のよいかつ強固なジヨイント部
6が形成できる。このジヨイント部6は結合部材
11の膨大部及びフランジ12がそれぞれ密封樹
脂部8中に埋設一体化されて抜け出し不能に食い
込んでいるので、フランジ12により接続部材
9,10から密封樹脂部8が抜け出し不能にな
り、同時に結合部材11の膨大部により密封樹脂
部8が膨出部7の表面から剥離不能になる。ゆえ
に、密封樹脂部8が接続部材9,10並びに膨出
部7の双方と強力に結合し、この結合強度は極め
て大きくなり、接続部材9,10へ抜け出し方向
の力が加わつてもこれらは膨出部7へ分離不能に
確実に固定される。なお接続部材9,10はガラ
ス繊維入の耐熱グレードのものとしてあるから、
射出成形において溶融樹脂を供給しても簡単には
変形しない。しかも成形時にピン29,30を接
続部材9,10内に挿入することにより密封樹脂
部8の位置決め作用に加えて、なおさら成形時の
変形は生じにくい。したがつて、厳格に空気の流
量制御を必要とする部品などの成形には、接続部
材9,10の内径寸法の精度を正確に維持でき好
適である。また結合部材11等の存在によりジヨ
イント部6の強度は極めて大きい。ゆえに自動車
のエンジン部品などのように、寸法精度や対振動
性など諸性能における要求水準の高いものには特
に有利である。また射出成形により成形サイクル
を向上でき能率的でもある。 Now, the mold 20 is placed on the top surface of the bulge 7, the peripheral wall 22 is pressed against the bulge 7, and at the same time the slider 27
If you push down in the direction of the arrow in Fig. 5, pin 29,
The tips of 30 enter the hollow portions of the connecting members 9 and 10. If you continue to lower slider 27,
The slider 27 descends until it contacts the tips of the connecting members 9 and 10 and then stops. This state is shown in FIG. At this time, the connecting members 9 and 10 are connected to the slider 2.
7, the peripheral wall 22 is tightly fixed on the bulge 7.
Since the concave portion 21 is also in close contact with the bulging portion 7, the concave portion 21 can constitute a space for injection molding. At this time, if necessary, a jig may be inserted into the main body 1 to support and fix the ends of the connecting members 9 and 10 protruding inside the bulge 7 or the inner wall of the bulge 7. good. While maintaining this state,
As shown in FIG. 6, molten polypropylene 31 is supplied as a fluid resin into the recess 21 by injection molding. If this is cooled and solidified as it is, the molten polypropylene 31 will form a sealing resin part 8 and will be integrated with the bulging part 7 while enclosing the connecting members 9 and 10, resulting in a strong joint part 6 with good sealing properties. can be formed. In this joint portion 6, the enlarged portion of the connecting member 11 and the flange 12 are embedded and integrated into the sealing resin portion 8 and are wedged into the joint portion 6, so that the sealing resin portion 8 can be pulled out from the connecting members 9 and 10 by the flange 12. At the same time, the sealing resin part 8 becomes impossible to peel off from the surface of the bulge 7 due to the bulge of the coupling member 11. Therefore, the sealing resin portion 8 is strongly bonded to both the connecting members 9, 10 and the bulging portion 7, and this bonding strength is extremely large, so that even if a force in the direction of pulling out is applied to the connecting members 9, 10, these will not swell. It is securely fixed to the protruding portion 7 in a manner that it cannot be separated. Note that the connecting members 9 and 10 are of heat-resistant grade containing glass fiber, so
It does not easily deform even if molten resin is supplied during injection molding. Moreover, by inserting the pins 29, 30 into the connecting members 9, 10 during molding, in addition to the positioning effect of the sealing resin portion 8, deformation during molding is less likely to occur. Therefore, it is suitable for molding parts that require strict air flow rate control because the accuracy of the inner diameter dimensions of the connecting members 9 and 10 can be maintained accurately. Furthermore, the strength of the joint portion 6 is extremely high due to the presence of the coupling member 11 and the like. Therefore, it is particularly advantageous for products such as automobile engine parts that have high requirements for various performances such as dimensional accuracy and anti-vibration properties. Injection molding also improves the molding cycle and is efficient.
(他の実施例)
第7図は湾曲しているダクト32の湾曲部内側
にジヨイント部33を設けた実施例である。この
場合両端にある開口34,35からダクト内を覗
きながら、ジヨイント部内側のダクト内において
仕上げ作業をすることは不可能であるから、特に
本発明の利点が明らかである。(Other Embodiments) FIG. 7 shows an embodiment in which a joint portion 33 is provided inside the curved portion of the curved duct 32. In this case, it is impossible to perform finishing work inside the duct inside the joint while looking into the duct through the openings 34 and 35 at both ends, so the advantage of the present invention is particularly obvious.
第8図は、接続部材を取付けるための開口の形
成に関する別実施例を示す。 FIG. 8 shows another embodiment regarding the formation of an opening for attaching a connecting member.
この実施例では、中空体の本体36のブロー成
形と同時に、接続部材を取付けるための開口37
に対応する位置に、本体36外方へ突出する中空
の突部38を一体に形成している。この製法は、
本体36をブロー成形する場合には、本体36の
成形型面に予じめ突部38に対応する凹部を刻設
しておき、溶融パリソン等を膨張させ、型面に圧
接すれば、容易に本体36と一体的に形成されて
得られる。これより開口37を開けるには、第8
図に点線で示すように、突部38を本体36外表
面に沿つて切除すれば、本体36内部にバリなど
を生じさせることなく簡単に行なうことができ
る。したがつて、本実施例により、開口を形成す
れば、後からバリなどをきれいに除去できないよ
うな複雑形状のものに特に有利である。 In this embodiment, the opening 37 for attaching the connecting member is simultaneously blow-molded to the hollow body 36.
A hollow protrusion 38 that protrudes outward from the main body 36 is integrally formed at a position corresponding to the main body 36 . This manufacturing method is
When blow molding the main body 36, a recess corresponding to the protrusion 38 is carved in advance on the mold surface of the main body 36, and a molten parison or the like is expanded and pressed against the mold surface. It is obtained by being formed integrally with the main body 36. To open the opening 37 from this point, the eighth
If the protrusion 38 is cut along the outer surface of the main body 36, as shown by the dotted line in the figure, this can be easily done without creating burrs inside the main body 36. Therefore, forming an opening according to this embodiment is particularly advantageous for complex-shaped objects where burrs and the like cannot be removed cleanly afterwards.
第9図は、結合部材の形成方法に関する別実施
例を示す。 FIG. 9 shows another embodiment of the method of forming the coupling member.
すなわち本実施例では、中空体の本体39の成
形と同時に、接続部材を取付けるための開口40
の周辺に鈎状の結合部材41を本体39と一体的
に成形するものである。成形方法は種種可能であ
るが、例えばブロー成形の場合には、前実施例同
様に、本体39の成形型面に予じめ結合部材41
に対応する凹部を刻設しておき、溶融パリソン等
を膨張させ、型面に圧接すれば本体39と一体成
形されて得られる。この方法はインサート成形す
る必要がないから、結合部材41の構成材料が本
体39と同じでよい場合には、製造が容易で有利
な方法である。 That is, in this embodiment, at the same time as the main body 39 of the hollow body is formed, the opening 40 for attaching the connecting member is formed.
A hook-shaped connecting member 41 is integrally molded with the main body 39 around the periphery of the main body 39. Although various molding methods are possible, for example, in the case of blow molding, the connecting member 41 is placed on the mold surface of the main body 39 in advance, as in the previous embodiment.
A concave portion corresponding to the shape is carved, and a molten parison or the like is expanded and pressed against the mold surface to obtain the molded body integrally with the main body 39. Since this method does not require insert molding, if the connecting member 41 is made of the same material as the main body 39, it is easy to manufacture and is an advantageous method.
また流動性樹脂並びにその供給方法は溶融樹脂
の射出成形に限らない。流動性樹脂は溶融樹脂に
限らず、供給後に固化するものならば、常態が液
状樹脂であつても粘着性樹脂であつても何でもよ
い。したがつて、たとえば液状の不飽和ポリエス
テル樹脂を常圧下で接続部材の連結部分に注型
し、そのまま固化させてもよい。この場合には大
きな加圧を必要としないから成形時の変形を少な
くできる。また例えば、ナイロン粉末を型込め
し、これを加圧しながらが溶融し、さらに冷却、
固化させる場合のように、粉末が常態のものであ
つても、一時的にせよ流動状態を呈するものであ
るならばこれも含む。また熱可塑性樹脂であつて
も、熱硬化性樹脂であつてもよい。 Furthermore, the fluid resin and its supply method are not limited to injection molding of molten resin. The fluid resin is not limited to a molten resin, and any resin that solidifies after being supplied may be used, whether it is a liquid resin or a sticky resin. Therefore, for example, a liquid unsaturated polyester resin may be cast into the connecting portion of the connecting member under normal pressure and allowed to solidify as it is. In this case, since large pressure is not required, deformation during molding can be reduced. For example, nylon powder is put into a mold, melted under pressure, and then cooled.
Even if the powder is in a normal state, as in the case of solidification, it also includes powders that exhibit a fluid state, even temporarily. Further, it may be a thermoplastic resin or a thermosetting resin.
またこのような中空体としては、ダクトなどの
管状体以外にも例えば、タンク類等の容器などさ
まざまな分野で利用できる。なおダクトとして
は、気体、液体を問わず、気密性、水密性などの
高いシール性を要求するものに適し、自動車用以
外のさまざまな用途がある。 In addition to tubular bodies such as ducts, such hollow bodies can be used in various fields such as containers such as tanks. Note that the duct is suitable for anything that requires high sealing properties such as airtightness and watertightness, regardless of whether it is gas or liquid, and has a variety of uses other than automobiles.
さらに接続部材の材料、断面形状等は自由であ
る。 Furthermore, the material, cross-sectional shape, etc. of the connecting member are free.
効 果
本発明によれば、高いシール性を要求されるジ
ヨイント部の形成にあたり、接続部材を中空体に
連通するために後から機械加工等をする必要がな
い。したがつて中空体内部におけるバリや切削屑
が生じず、これらを除去する必要がない。ゆえに
中空体がどのような形状をとろうとも作業能率に
変化はなく極めて作業の効率がよい。また中空体
内部をバリ等が移動し、接続部品に付着するなど
して悪影響を生じることもないからいつでも安心
して使用できる。Effects According to the present invention, when forming a joint portion that requires high sealing performance, there is no need to perform machining or the like afterwards in order to connect the connecting member to the hollow body. Therefore, no burrs or cutting chips are generated inside the hollow body, and there is no need to remove them. Therefore, no matter what shape the hollow body takes, there is no change in working efficiency, and the working efficiency is extremely high. In addition, burrs and the like will not move inside the hollow body and will not cause any adverse effects such as adhesion to connected parts, so it can be used with confidence at any time.
そのうえ、中空体に対して接続部材を抜け出し
自由な状態で内部と連通接続させ、連結部分に流
動樹脂を供給、固化させてなる密封樹脂部を設け
るとともに、中空体と接続部材のそれぞれに密封
樹脂部中に埋設されて抜け出し不能に食い込む抜
け止め部を設け、これらの抜け止め部を介して密
封樹脂部により接続部材を中空体の壁面へ分離不
能に固定した。ゆえに、密封樹脂が各抜け止め部
を介して接続部材と中空部材の双方に分離不能に
結合するので、接続部材を中空体の壁面に対して
分離不能に強固に固定させることができる。 In addition, a sealing resin part is provided in which the connecting member is freely pulled out from the hollow body and communicated with the inside, and a fluid resin is supplied to the connecting part and solidified. A retaining portion that is embedded in the portion and bites into the connecting member so that it cannot be removed is provided, and the connecting member is irremovably fixed to the wall surface of the hollow body by means of a sealing resin portion via these retaining portions. Therefore, since the sealing resin is inseparably bonded to both the connecting member and the hollow member via each of the retaining portions, the connecting member can be firmly fixed to the wall surface of the hollow body in an inseparable manner.
第1図は第1実施例であるジヨイント部の−
断面図、第2図は同実施例の斜視図、第3図は
同実施例の分解斜視図、第4図は同実施例のジヨ
イント部の成形過程における断面図、第5図は同
実施例のジヨイント部の成形過程における金型セ
ツト時の断面図、第6図は同実施例のジヨイント
部の成形過程における溶接樹脂供給時の断面図、
第7図は第2実施例の斜視図、第8図は第3実施
例のジヨイント部の断面図、第9図は第4実施例
のジヨイント部の断面図、第10図は従来例の接
続部材接合工程にあるジヨイント部の断面図、第
11図は従来例は機械加工工程にあるジヨイント
部の断面図である。
符号の説明、1……ダクト、2,3……開口
端、4……湾曲部、5……パーテイングライン、
6……ジヨイント部、7……膨出部、8……密閉
樹脂部、9,10……接続部材、11……結合部
材、12……フランジ、13……連結部、14,
15……開口、16……フツクピン、17……ボ
ス、18……ダンパーボツクス、19……パイ
プ、20……金型、25……凹部、22,26…
…周壁、23,24……開口、27……スライダ
ー、28……ロツド、29,30……ピン、31
……溶融ポリプロピレン、32……本体、33…
…ジヨイント、34,35……端部、36……本
体、37……開口、38……突部、39……本
体、40……開口、41……結合部材。
Figure 1 shows the joint part of the first embodiment.
2 is a perspective view of the same embodiment, FIG. 3 is an exploded perspective view of the same embodiment, FIG. 4 is a sectional view of the joint part of the same embodiment in the molding process, and FIG. 5 is a perspective view of the same embodiment. FIG. 6 is a cross-sectional view when the mold is set in the molding process of the joint part of the same example, and FIG.
Fig. 7 is a perspective view of the second embodiment, Fig. 8 is a sectional view of the joint part of the third embodiment, Fig. 9 is a sectional view of the joint part of the fourth embodiment, and Fig. 10 is a connection of the conventional example. FIG. 11 is a cross-sectional view of the joint part in the process of joining members, and FIG. 11 is a cross-sectional view of the joint part in the machining process in the conventional example. Explanation of symbols, 1...Duct, 2, 3...Open end, 4...Curved part, 5...Parting line,
6...Joint part, 7...Bulging part, 8...Sealing resin part, 9, 10...Connecting member, 11...Joining member, 12...Flange, 13...Connecting part, 14,
15... Opening, 16... Hook pin, 17... Boss, 18... Damper box, 19... Pipe, 20... Mold, 25... Recess, 22, 26...
... Peripheral wall, 23, 24 ... Opening, 27 ... Slider, 28 ... Rod, 29, 30 ... Pin, 31
...Melted polypropylene, 32...Main body, 33...
... joint, 34, 35 ... end, 36 ... main body, 37 ... opening, 38 ... protrusion, 39 ... main body, 40 ... opening, 41 ... coupling member.
Claims (1)
することによりジヨイント部を設けた中空体にお
いて、予め前記接続部材に対応させて前記中空体
の壁面に設けた開口に、前記接続部材の一端を挿
入して前記接続部材を前記中空体内部と抜け出し
自由な状態で連通させ、この中空体と接続部材の
連結部分に流動性樹脂を供給し、固化させてなる
密封樹脂部を設けるとともに、中空体と接続部材
のそれぞれに密封樹脂部中に埋設されて抜け出し
不能に食い込む抜け止め部を設け、これらの抜け
止め部を介して密封樹脂部により接続部材を中空
体の壁面へ分離不能に固定していることを特徴と
するジヨイント部を有する中空体。1. In a hollow body in which a joint portion is provided by connecting a hollow connecting member that is open at both ends to a wall surface, one end of the connecting member is inserted into an opening previously provided in the wall surface of the hollow body corresponding to the connecting member. The connecting member is inserted into the hollow body and communicated with the interior of the hollow body in a free state, and a sealing resin portion is provided by supplying and solidifying a fluid resin to the connection portion between the hollow body and the connecting member, and and the connecting member are each provided with a retaining part that is embedded in the sealing resin part and bites into the sealing resin part, and the connecting member is irremovably fixed to the wall surface of the hollow body by the sealing resin part through these retaining parts. A hollow body having a joint portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10492484A JPS6182091A (en) | 1984-05-23 | 1984-05-23 | Hollow body with joint section |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10492484A JPS6182091A (en) | 1984-05-23 | 1984-05-23 | Hollow body with joint section |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6182091A JPS6182091A (en) | 1986-04-25 |
JPH0438956B2 true JPH0438956B2 (en) | 1992-06-26 |
Family
ID=14393647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10492484A Granted JPS6182091A (en) | 1984-05-23 | 1984-05-23 | Hollow body with joint section |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6182091A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0627907Y2 (en) * | 1986-06-06 | 1994-07-27 | エクセル株式会社 | Resin intake duct |
JPH0546500Y2 (en) * | 1986-12-27 | 1993-12-06 | ||
JPS63290715A (en) * | 1987-05-22 | 1988-11-28 | Mitsutoyo Jushi Kk | Manufacture of synthetic resin hollow molded product |
US12049719B2 (en) * | 2021-04-12 | 2024-07-30 | Whirlpool Corporation | Water intrusion protection for techframe and console |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124917A (en) * | 1974-08-23 | 1976-02-28 | Aron Kasei Kk | Shikanribuno toritsukehoho |
JPS5338344U (en) * | 1976-09-08 | 1978-04-04 |
-
1984
- 1984-05-23 JP JP10492484A patent/JPS6182091A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124917A (en) * | 1974-08-23 | 1976-02-28 | Aron Kasei Kk | Shikanribuno toritsukehoho |
JPS5338344U (en) * | 1976-09-08 | 1978-04-04 |
Also Published As
Publication number | Publication date |
---|---|
JPS6182091A (en) | 1986-04-25 |
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