JPH0814298A - Structure of fluid supply and discharge port of resin vessel - Google Patents
Structure of fluid supply and discharge port of resin vesselInfo
- Publication number
- JPH0814298A JPH0814298A JP17018394A JP17018394A JPH0814298A JP H0814298 A JPH0814298 A JP H0814298A JP 17018394 A JP17018394 A JP 17018394A JP 17018394 A JP17018394 A JP 17018394A JP H0814298 A JPH0814298 A JP H0814298A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- fluid supply
- female screw
- discharge port
- base
- 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.)
- Pending
Links
Landscapes
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えば車両用サスペ
ンション等に使用される空気ばねのチャンバー又は／及
びピストンが合成樹脂材料で成形された樹脂製容器の流
体給排口の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a fluid supply / discharge port of a resin container in which a chamber of an air spring or / and a piston used in a vehicle suspension or the like is molded of a synthetic resin material. .
【０００２】[0002]
【従来の技術】圧力流体が給排される従来の容器、例え
ば空気ばね等ではチャンバーやピストンが金属製であっ
たが、近年においては、軽量化およびコストの低減の目
的から合成樹脂材料から成形された樹脂製容器が開発さ
れている。このような樹脂製容器に、この容器内への流
体の給排を司る配管類を接続するための金属製の口金を
設けるには、インサート部材として口金を金型内にセッ
トしておき、金型に樹脂を射出等して成形し、成形後に
口金が樹脂中に埋め込まれるようにしていた。2. Description of the Related Art In conventional containers, such as air springs, in which a pressure fluid is supplied and discharged, chambers and pistons are made of metal. Resin containers have been developed. In order to provide such a resin container with a metal cap for connecting pipes that control the supply and discharge of fluid into the container, set the cap as an insert member in the mold, and The mold is formed by injecting a resin or the like, and the die is embedded in the resin after the molding.
【０００３】樹脂中に金属製の口金を埋め込んで取付け
た流体給排口の従来構造では、樹脂と金属との間のシー
ル性に問題があった。特に容器材料として熱可塑性樹脂
を用いた場合、この樹脂は冷却すると収縮するので、樹
脂と金属との間を完全に接着することは困難であった。
また、樹脂と金属とでは熱膨張率に大きな差があるた
め、容器使用中の温度上昇により両者間に微細な隙間が
生じるおそれがあった。そこで、樹脂と金属との間のシ
ール性を確実なものとするため、口金と樹脂とが接触す
る面の一部の外周面上にゴムを介在させて流体のシール
性を保持する構造のものが提案されるに至った。In the conventional structure of the fluid supply / discharge port in which the metal base is embedded and attached in the resin, there is a problem in the sealing property between the resin and the metal. In particular, when a thermoplastic resin is used as the container material, the resin shrinks when cooled, so that it is difficult to completely bond the resin and the metal.
Further, since there is a large difference in the coefficient of thermal expansion between the resin and the metal, there is a possibility that a fine gap may occur between the resin and the metal due to the temperature rise during use of the container. Therefore, in order to ensure the sealing property between the resin and the metal, a structure in which a rubber is interposed on the outer peripheral surface of a part of the surface where the die and the resin contact to maintain the fluid sealing property Came to be proposed.
【０００４】[0004]
【発明が解決しようとする課題】ゴムを介在させた構造
のものでは、形状が複雑となり、部品点数が増えてコス
トアップにつながっていた。金属製の口金を使わずに樹
脂に直接雌ねじを形成すれば、シール性の問題は生じな
いが、強度が劣る。In the structure in which rubber is interposed, the shape is complicated, the number of parts is increased, and the cost is increased. If a female screw is formed directly on the resin without using a metal die, the problem of sealing property will not occur, but the strength will be poor.
【０００５】そこで、この発明は、形状も簡単で、部品
点数を増やさず、シール性も確実なものとし、強度も充
分な樹脂製容器の流体給排口の構造を提供することを目
的とする。Therefore, an object of the present invention is to provide a structure of a fluid supply / discharge port of a resin container which has a simple shape, does not increase the number of parts, ensures a sealing property, and has sufficient strength. .
【０００６】[0006]
【課題を解決するための手段】上述の目的を達成するた
め、この発明は、樹脂製容器の流体給排口をほぼ筒状の
金属製の口金が樹脂中に埋め込まれた形で構成し、流体
給排用管を接続するため口金の内面にテーパ状の雌ねじ
を形成し、この口金に形成された雌ねじに連続して樹脂
中に形成された連通孔の一部の内周面に雌ねじを形成し
たものである。In order to achieve the above-mentioned object, according to the present invention, a fluid supply / discharge port of a resin container is formed in a form in which a substantially cylindrical metal base is embedded in resin. A tapered female screw is formed on the inner surface of the mouthpiece to connect the fluid supply / discharge pipe, and a female screw is formed on the inner peripheral surface of a part of the communication hole formed in the resin continuously from the female thread formed on the mouthpiece. It was formed.
【０００７】[0007]
【作用】雌ねじは口金の内周面と樹脂中の連通孔の内周
面とにわたってテーパ状に形成されるので、この雌ねじ
に流体給排用管を接続すれば、口金の存在により強度面
は保障され、管の先端は樹脂部分の雌ねじに螺合される
ためにシール性も確保され、口金と樹脂との間にゴムを
介在させる必要もなくなり、コストダウンも図れる。[Function] Since the internal thread is formed in a taper shape over the inner peripheral surface of the mouthpiece and the inner peripheral surface of the communication hole in the resin, if a fluid supply / discharge pipe is connected to this female thread, the strength surface is This is ensured, and since the tip of the pipe is screwed into the female screw of the resin portion, the sealing property is secured, there is no need to interpose rubber between the mouthpiece and the resin, and the cost can be reduced.
【０００８】[0008]
【実施例】以下に、この発明の好適な実施例を図面を参
照にして説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.
【０００９】図１に示す実施例において、符号１は樹脂
製容器を示し、この樹脂製容器１は空気ばねを構成した
ものであり、アッパープレート２の個所に流体給排口３
を形成してある。このアッパープレート２とピストン４
との間に空気ばねゴム膜５を取付けてある。このゴム膜
５は締付リング６及び７でその上下端がアッパープレー
ト２とピストン４に固着してある。この樹脂製容器１の
内部には圧力空気室８が形成され、この圧力空気室８と
外部とは連通孔９でつながっている。流体給排口３の外
部側の連通孔９にはほぼ筒状の金属製の口金１０が埋め
込まれている。口金１０はアッパープレート２を射出成
形するときにインサートされる。この口金１０の内周面
と連通孔９の内周面の一部にわたってテーパ状の雌ねじ
１０Ａ，９Ａを形成してある。この雌ねじ１０Ａ，９Ａ
には後述する流体給排用管１１の先端外周面に形成され
た雄ねじ１１Ａが螺合する。この流体給排口３の詳細
は、図２に示す通りである。In the embodiment shown in FIG. 1, reference numeral 1 denotes a resin container, and this resin container 1 constitutes an air spring, and a fluid supply / discharge port 3 is provided at a portion of the upper plate 2.
Has been formed. This upper plate 2 and piston 4
An air spring rubber film 5 is attached between the and. The rubber film 5 has tightening rings 6 and 7, and its upper and lower ends are fixed to the upper plate 2 and the piston 4. A pressure air chamber 8 is formed inside the resin container 1, and the pressure air chamber 8 and the outside are connected by a communication hole 9. A substantially cylindrical metal base 10 is embedded in the communication hole 9 on the outer side of the fluid supply / discharge port 3. The base 10 is inserted when the upper plate 2 is injection-molded. Tapered female screws 10A, 9A are formed on the inner peripheral surface of the mouthpiece 10 and a part of the inner peripheral surface of the communication hole 9. This female screw 10A, 9A
A male screw 11A formed on the outer peripheral surface of the distal end of the fluid supply / discharge pipe 11 described later is screwed into this. Details of the fluid supply / discharge port 3 are as shown in FIG.
【００１０】図３は金属製の流体給排用管１１を流体給
排口３にねじ込んだ状態を示す断面図である。この流体
給排用管１１の先端外周面に形成された雄ねじ１１Ａは
樹脂に形成された雌ねじ９Ａと金属製の口金１０に形成
された雄ねじ１０Ａに螺合する。この流体給排用管１１
は継手を示し、この継手となる管１１に本管（図示せ
ず）が接続されるようになっている。FIG. 3 is a sectional view showing a state in which the metal fluid supply / discharge pipe 11 is screwed into the fluid supply / discharge port 3. The male screw 11A formed on the outer peripheral surface of the tip of the fluid supply / discharge pipe 11 is screwed into the female screw 9A formed of resin and the male screw 10A formed on the metal base 10. This fluid supply / discharge pipe 11
Indicates a joint, and a main pipe (not shown) is connected to the pipe 11 serving as the joint.
【００１１】図４はこの本管接続用の継手となる流体給
排用管１１のみを示す断面図であり、その先端外周部に
雄ねじ１１Ａが形成された状態を示すものである。FIG. 4 is a cross-sectional view showing only the fluid supply / discharge pipe 11 which serves as a joint for connecting the main pipe, and shows a state in which a male screw 11A is formed on the outer peripheral portion of the tip thereof.
【００１２】口金１０の内周面に形成される雌ねじ１０
Ａの長さは流体給排用管１１に形成される雄ねじ１１Ａ
の半分以上あれば充分な強度を確保できる。Female screw 10 formed on the inner peripheral surface of the base 10.
The length A is a male screw 11A formed on the fluid supply / discharge pipe 11.
If it is more than half of the above, sufficient strength can be secured.
【００１３】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、樹脂製容器の流体給排口をほぼ筒状の金属製の口金
が樹脂中に埋め込まれた形で構成し、流体給排用管を接
続するため口金の内面にテーパ状の雌ねじを形成し、こ
の口金に形成された雌ねじに連続して樹脂中に形成され
た連通孔の一部の内周面に雌ねじを形成したので流体給
排用管に形成された雄ねじは樹脂の雌ねじと金属の雌ね
じの両方に螺合し、シール性が向上する。また、口金と
して複雑な形状のものは不要となり、単に筒状のものを
樹脂成形時にインサート成形すればよく、かつシール性
向上のためにゴムを設ける必要もないため、コストダウ
ンを図ることができる。金属製の口金により径方向の強
度が確保され、かつねじ込みによる推力が支えられるこ
ととなる。樹脂部の雌ねじに流体給排用管の雄ねじが螺
合すると、樹脂は金属に比べて弾性に富むので、テーパ
状の樹脂部の雌ねじで金属製の雄ねじが密着すると、ね
じ部同士の隙間に弾性率の低い樹脂が満たされ、気密が
保持できることとなる。As described above, according to the present invention, the fluid supply / discharge port of the resin container is configured such that a substantially cylindrical metal base is embedded in the resin to supply / discharge the fluid. In order to connect the pipe, a tapered female screw is formed on the inner surface of the base, and a female screw is formed on the inner peripheral surface of part of the communication hole formed in the resin continuously with the female screw formed on the base. The male screw formed on the supply / discharge pipe is screwed into both the female screw of resin and the female screw of metal, and the sealing property is improved. In addition, since a die having a complicated shape is not necessary, it is only necessary to insert-mold a tubular one at the time of resin molding, and it is not necessary to provide rubber for improving the sealing property, so that the cost can be reduced. . The metal die secures the strength in the radial direction and supports the thrust due to screwing. When the male thread of the fluid supply / discharge pipe is screwed into the female thread of the resin part, the resin is more elastic than metal. The resin having a low elastic modulus is filled and the airtightness can be maintained.
【図１】この発明の好適な実施例を示す断面図。FIG. 1 is a sectional view showing a preferred embodiment of the present invention.
【図２】流体給排口の拡大断面図。FIG. 2 is an enlarged sectional view of a fluid supply / discharge port.
【図３】流体給排口に流体給排用管を接続した状態の断
面図。FIG. 3 is a cross-sectional view of a state in which a fluid supply / discharge pipe is connected to a fluid supply / discharge port.
【図４】流体給排用管の断面図。FIG. 4 is a cross-sectional view of a fluid supply / discharge pipe.
１ 樹脂製容器 ３ 流体給排口 ９ 連通孔 ９Ａ 雌ねじ １０ 口金 １０Ａ 雌ねじ １１ 流体給排用管 １１Ａ 雄ねじ 1 Resin Container 3 Fluid Supply / Discharge Port 9 Communication Hole 9A Female Screw 10 Base 10A Female Screw 11 Fluid Supply / Discharge Pipe 11A Male Screw
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｌ 22:00 Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location // B29L 22:00
Claims (2)
属製の口金が樹脂中に埋め込まれた形で構成し、 流体給排用管を接続するため口金の内面にテーパ状の雌
ねじを形成し、 この口金に形成された雌ねじに連続して樹脂中に形成さ
れた連通孔の一部の内周面に雌ねじを形成したことを特
徴とする樹脂製容器の流体給排口の構造。1. A fluid supply / discharge port of a resin container is configured by a substantially cylindrical metal base embedded in a resin, and a taper is formed on an inner surface of the base for connecting a fluid supply / discharge pipe. A female screw is formed, and a female screw is formed on a part of the inner peripheral surface of the communication hole formed in the resin continuously with the female screw formed on the mouthpiece. Construction.
ン，トラックのキャビンのサスペンション，座席に使用
される空気ばねに装着されることを特徴とする請求項１
に記載の樹脂製容器の流体給排口の構造。2. The resin container is attached to a suspension for a vehicle, a suspension of a cabin of a truck, and an air spring used for a seat.
The structure of the fluid supply / discharge port of the resin container described in [3].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17018394A JPH0814298A (en) | 1994-06-29 | 1994-06-29 | Structure of fluid supply and discharge port of resin vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17018394A JPH0814298A (en) | 1994-06-29 | 1994-06-29 | Structure of fluid supply and discharge port of resin vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0814298A true JPH0814298A (en) | 1996-01-16 |
Family
ID=15900232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17018394A Pending JPH0814298A (en) | 1994-06-29 | 1994-06-29 | Structure of fluid supply and discharge port of resin vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814298A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007232053A (en) * | 2006-02-28 | 2007-09-13 | Aisin Seiki Co Ltd | Vehicular air spring |
| CN104948650A (en) * | 2015-05-06 | 2015-09-30 | 常州大学 | Adaptive equal-stiffness vibration isolator based on air floatation and magnetic floatation combination three-directional decoupling |
| DE102007008965B4 (en) * | 2006-02-23 | 2017-02-09 | Voss Automotive Gmbh | Piston for a vehicle air spring and connector plug for insertion into a receiving opening of the piston |
-
1994
- 1994-06-29 JP JP17018394A patent/JPH0814298A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007008965B4 (en) * | 2006-02-23 | 2017-02-09 | Voss Automotive Gmbh | Piston for a vehicle air spring and connector plug for insertion into a receiving opening of the piston |
| JP2007232053A (en) * | 2006-02-28 | 2007-09-13 | Aisin Seiki Co Ltd | Vehicular air spring |
| CN104948650A (en) * | 2015-05-06 | 2015-09-30 | 常州大学 | Adaptive equal-stiffness vibration isolator based on air floatation and magnetic floatation combination three-directional decoupling |
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