JP2003222291A - Seal cap - Google Patents
Seal capInfo
- Publication number
- JP2003222291A JP2003222291A JP2002019379A JP2002019379A JP2003222291A JP 2003222291 A JP2003222291 A JP 2003222291A JP 2002019379 A JP2002019379 A JP 2002019379A JP 2002019379 A JP2002019379 A JP 2002019379A JP 2003222291 A JP2003222291 A JP 2003222291A
- Authority
- JP
- Japan
- Prior art keywords
- seal cap
- thermoplastic elastomer
- hole
- fitting portion
- wall portion
- 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
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 229920001971 elastomer Polymers 0.000 claims description 16
- 230000013011 mating Effects 0.000 claims description 15
- 239000000806 elastomer Substances 0.000 claims description 6
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 2
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003031 santoprene Polymers 0.000 description 1
- 229920002397 thermoplastic olefin Polymers 0.000 description 1
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はシールキャップに係
り、さらに詳しくは、例えばカーエアコンのコンプレッ
サーを出荷する場合、コンプレッサー本体に冷凍機油を
封入して出荷されるが、このコンプレッサー本体には配
管接続のための孔が空いており、この孔から封入した冷
凍機油が漏れないように、かつ、空気中の水分を油が吸
収しないように、上記孔に圧入嵌合させて使用する等の
シールキャップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal cap, and more specifically, when a compressor for a car air conditioner is shipped, refrigerating machine oil is enclosed in the compressor body before shipment. There is a hole for this, so that the refrigerator oil sealed from this hole does not leak and the oil in the air is not absorbed by the oil. Regarding
【０００２】[0002]
【従来の技術】上述のこの種のカーエアコンのコンプレ
ッサー等に用いられるシールキャップは、従来からＮＢ
Ｒ等のゴム製のものが用いられている。ゴム製が使用さ
れていた理由は、封入した冷凍機油が漏れないように、
かつ、空気中の水分を油が吸収しないように、気密性を
維持しやすいため、及び、シールキャップをコンプレッ
サー本体の上記孔に着脱する作業が容易であるため、及
び、シールキャップが内圧にて抜け出にくいため等の理
由によるものであった。2. Description of the Related Art Seal caps used in compressors and the like of the above-mentioned car air conditioners of the type described above have been NBs.
A rubber material such as R is used. The reason why rubber was used was to prevent the enclosed refrigerator oil from leaking,
In addition, since it is easy to maintain airtightness so that oil does not absorb moisture in the air, and because it is easy to attach / detach the seal cap to / from the above-mentioned hole of the compressor body, This was because it was difficult to get out.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来の
ゴム製では、バリを発生させることなく無人で射出成形
することが難しく、また、ゴムは加硫してしまうので再
利用の面で劣っている、という問題があった。また、ゴ
ム製では、密封性を高めるために、コンプレッサー本体
の上記孔に嵌着する締め代を十分に大きく設定できる
が、しかし、その後の配管接続作業直前にこのキャップ
を取り外す際に抵抗が高いという問題があった。However, in the conventional rubber, it is difficult to carry out injection molding unattended without generating burrs, and since rubber is vulcanized, it is inferior in terms of reuse. , There was a problem. Also, with rubber, the tightening allowance to fit into the above-mentioned hole of the compressor body can be set to be sufficiently large in order to improve the hermeticity, but there is a high resistance when removing this cap immediately before the subsequent pipe connection work. There was a problem.
【０００４】そこで、本発明はこれらの従来のゴム製シ
ールキャップの問題点を解決して、バリを発生させずに
容易に射出成形ができてコストダウンを図り、リサイク
ル（再成形）も可能とし、さらに、ゴム製に劣らない気
密性を確保しつつ、着脱作業も容易なシールキャップを
提供することを、目的とする。Therefore, the present invention solves the problems of these conventional rubber seal caps, allows easy injection molding without generating burrs, reduces costs, and enables recycling (remolding). Further, it is an object of the present invention to provide a seal cap that is easy to attach and detach while ensuring airtightness comparable to that of rubber.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明は、全体
が熱可塑性エラストマーから成り、相手部材の孔部に圧
入嵌合される嵌着部の外周面に、複数本の周凸条を突設
し、かつ、上記嵌着部の内端面から凹窪部を形成したも
のである。In view of the above, according to the present invention, a plurality of circumferential ridges are formed on the outer peripheral surface of a fitting portion which is entirely made of a thermoplastic elastomer and is press-fitted into the hole of a mating member. In addition, a concave portion is formed from the inner end surface of the fitting portion.
【０００６】また、全体が熱可塑性エラストマーから成
り、相手部材の孔部に圧入嵌合される嵌着部の外周面
に、複数本の周凸条を突設し、かつ、上記嵌着部の内端
面から上記周凸条が存在する軸心方向の深さ位置までの
範囲に凹窪部を設けて、該嵌着部に短筒壁部を形成し、
該短筒壁部に内圧が作用した状態で該短筒壁部が拡径方
向に変形しようとして上記周凸条が上記相手部材の孔部
に接触する圧力が増大するよう構成されている。Further, a plurality of peripheral projections are provided on the outer peripheral surface of the fitting portion which is entirely made of thermoplastic elastomer and is press-fitted into the hole of the mating member, and the fitting portion is Providing a concave portion in the range from the inner end surface to the depth position in the axial direction in which the circumferential convex strip is present, forming a short tubular wall portion in the fitting portion,
The internal pressure is applied to the short tubular wall portion so that the pressure applied by the circumferential projection to the hole of the mating member increases as the short tubular wall portion attempts to deform in the radial direction.
【０００７】また、凹窪部の奥端面から全体外端面まで
の肉厚寸法を、上記短筒壁部の肉厚寸法よりも、大に設
定するのが好ましい。そして、相手部材に嵌合及び接触
しない外表面側にゲートを配設して熱可塑性エラストマ
ーを射出成形するのが好ましい。また、熱可塑性エラス
トマーが、ポリウレタンエラストマー，ポリエステルエ
ラストマー，動的架橋熱可塑性エラストマー，又は，オ
レフィン系エラストマーである。Further, it is preferable that the thickness dimension from the rear end surface of the concave portion to the entire outer end surface is set larger than the thickness dimension of the short tubular wall portion. Then, it is preferable that a gate is disposed on the outer surface side that does not fit and contact the mating member, and the thermoplastic elastomer is injection molded. Further, the thermoplastic elastomer is a polyurethane elastomer, a polyester elastomer, a dynamically crosslinked thermoplastic elastomer, or an olefin-based elastomer.
【０００８】[0008]
【発明の実施の形態】以下、図示の実施の形態に基づき
本発明を詳説する。図２（イ）の平面図、図２（ロ）の
正面図、図１の拡大断面図（図１のａ−ａ断面図）及び
図３の斜視図に於て、シールキャップＳはその全体が熱
可塑性エラストマーから成り、相手部材Ｋの孔部１に、
着脱可能に、圧入嵌着される。相手部材Ｋとしては、例
えば、カーエアコン用のコンプレッサー本体であって、
自動車組立工程にて配管（ホース類）を接続するため
に、通常２個の孔部１が設けられている。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the illustrated embodiments. In the plan view of FIG. 2 (a), the front view of FIG. 2 (b), the enlarged cross-sectional view of FIG. 1 (a-a cross-sectional view of FIG. 1) and the perspective view of FIG. Consists of a thermoplastic elastomer, and in the hole 1 of the mating member K,
It is detachably attached by press fitting. The mating member K is, for example, a compressor body for a car air conditioner,
Two holes 1 are usually provided for connecting pipes (hoses) in the automobile assembly process.
【０００９】このシールキャップＳは、上記孔部１に圧
入嵌合───密嵌状に嵌着───される嵌着部２と、こ
の嵌着部２の上端（外端）に連設される外鍔部３と、外
鍔部３から上方へ突設された把手部４とを、備えてい
る。把手部４は、図例では倒立Ｌ字形であるが、その形
状は、Ｌ字形やその他変形自由である。この把手部４
は、孔部１からシールキャップＳを取外す───離脱す
る───際に、手で握って引っ張るためのものである。The seal cap S is connected to the fitting portion 2 which is press-fitted into the hole portion 1 and is fitted in a close fitting manner, and the upper end (outer end) of the fitting portion 2. The outer flange portion 3 is provided, and the handle portion 4 projecting upward from the outer flange portion 3 is provided. Although the handle portion 4 has an inverted L-shape in the illustrated example, the shape thereof is L-shaped or any other shape. This handle part 4
Is for grasping and pulling with a hand when the seal cap S is detached from the hole 1--removed--.
【００１０】嵌着部２の外周面は短円柱面であって、複
数本の周凸条５…が突設されている。図１〜３では、こ
の周凸条５は３本の場合を例示するが、その数は増減自
由である。そして、図５の拡大図に示すように、周凸条
５は丸味のある山形であり、頂部は半径Ｒ1 として、
（後述するが）内圧を受けたときのシール面圧を高める
と同時に、内圧が無い状態───孔部１への嵌着時と抜
き出し時───には抵抗を減少させるという利点があ
る。また、周凸条５の裾野部は半径Ｒ2 として、手荒く
取り扱われてもその部位から亀裂が入らないように配慮
している。例えば、Ｒ1 ，Ｒ2 としては、各々、 0.3mm
〜 1.0mmとするのが望ましい。The outer peripheral surface of the fitting portion 2 is a short cylindrical surface, and a plurality of peripheral projecting ridges 5 ... 1 to 3 exemplify a case where the number of the circumferential ridges 5 is three, but the number can be freely increased or decreased. Then, as shown in the enlarged view of FIG. 5, the circumferential ridge 5 has a round chevron shape, and the top has a radius R 1 ,
There is an advantage that the seal surface pressure when receiving the internal pressure is increased (as will be described later), and at the same time, the resistance is reduced when there is no internal pressure when fitting into the hole 1 and when extracting. . Further, the skirt portion of the circumferential ridge 5 has a radius R 2 so that cracks will not be generated from the portion even if it is handled roughly. For example, R 1 and R 2 are each 0.3 mm
~ 1.0 mm is preferable.
【００１１】次に、図１〜図３にもどって説明すると、
上記嵌着部２には、その内端面（下端面）から短円柱状
の凹窪部６が形成されている。この凹窪部６の深さ位置
は、少なくとも全ての周凸条５…が存在する軸心方向の
位置までに、設定する。図例では、最上位置の周凸条５
よりも深く、外鍔部３の肉厚寸法Ｔ3 と相等しい肉厚寸
法Ｔ0 の天井壁部７が残るように、形成されている場合
を示す。Next, referring back to FIGS. 1 to 3,
The fitting portion 2 is formed with a concave recess 6 having a short cylindrical shape from the inner end surface (lower end surface) thereof. The depth position of the recessed portion 6 is set at least up to the position in the axial direction where all the circumferential projections 5 exist. In the illustrated example, the circumferential ridge 5 at the uppermost position
A case where the ceiling wall portion 7 having a wall thickness dimension T 0 that is deeper and has a wall thickness dimension T 3 equal to the wall thickness dimension T 3 of the outer collar portion 3 remains is shown.
【００１２】このように嵌着部２に凹窪部６を設けて、
円形の短筒壁部８を形成する。ところで、例えば、孔部
１を有する相手部材Ｋがカーエアコン用コンプレッサー
本体であるとすると、夏場の運搬時にトラック荷台の温
度上昇（最大80℃）によって、封入された油及び空気が
膨張することで、内圧が発生し、シールキャップＳが抜
ける虞がある。特に、熱可塑性エラストマーのような樹
脂材質では、ゴムに比べて、反撥弾性が低く、かつ、ク
リープを起こしやすいので、一層、シールキャップＳが
上記内圧によって抜けることが考えられるが、本発明で
は、上述の短筒壁部８の内面に上記内圧が作用した場
合、この短筒壁部８が拡径方向へ変形しようとして周凸
条５…が相手部材Ｋの孔部１に接触する圧力が著しく増
大することで、図６の周凸条５の頂部によって、抜けに
対する摩擦抵抗が増加し、抜けを防止できる。In this way, the concave portion 6 is provided in the fitting portion 2,
A circular short cylinder wall portion 8 is formed. By the way, for example, if the counterpart member K having the hole 1 is the compressor body for car air conditioners, the temperature rise of the truck bed (up to 80 ° C.) during transportation in the summer causes the enclosed oil and air to expand. The internal pressure may be generated and the seal cap S may come off. In particular, a resin material such as a thermoplastic elastomer has a lower impact resilience and is more likely to cause creep as compared with rubber, so that it is considered that the seal cap S may be further removed by the internal pressure. However, in the present invention, When the above-mentioned internal pressure acts on the inner surface of the short tubular wall portion 8, the short tubular wall portion 8 tries to deform in the radial direction and the pressure at which the circumferential projections 5 come into contact with the hole portion 1 of the mating member K is remarkable. By increasing the number, the frictional resistance against slipping increases due to the apex of the circumferential ridge 5 in FIG. 6, and slipping out can be prevented.
【００１３】なお、図１に示した実施の形態では、凹窪
部６の奥端面６ａから全体外端面９までの肉厚寸法──
─即ち天井壁部７の肉厚寸法Ｔ0 ───を、短筒壁部８
の肉厚寸法Ｔ8 （周凸条５の無い状態での肉厚をいう）
と、略等しく設定している。次に、図４に示した他の実
施の形態では、天井壁部７の肉厚寸法Ｔ0 を、短筒壁部
８の肉厚寸法Ｔ8 よりも、大に設定している。In the embodiment shown in FIG. 1, the thickness dimension from the rear end surface 6a of the concave portion 6 to the entire outer end surface 9--
That is, the wall thickness dimension T 0 of the ceiling wall portion 7 is set to the short cylinder wall portion 8
Thickness dimension T 8 (means the thickness without the circumferential ridge 5)
And are set almost equal. Next, in another embodiment shown in FIG. 4, the wall thickness dimension T 0 of the ceiling wall portion 7 is set larger than the wall thickness dimension T 8 of the short tubular wall portion 8.
【００１４】図１のように、肉厚寸法Ｔ0 をＴ8 と略等
しくするのは、嵌着部２の周凸条５の外径寸法Ｄ0 が、
例えば20mm未満と小さい場合に（射出成形性のうえで）
好適であり、他方、図４のように、Ｔ0 ＞Ｔ8 とするの
は、周凸条５の外径寸法Ｄ0が、例えば、20mm以上の大
径の場合に、上述の内圧が発生したときの天井壁７の外
方（上方）膨らみ変形を防止するうえで、好ましい。As shown in FIG. 1, the wall thickness dimension T 0 is made substantially equal to T 8 because the outer diameter dimension D 0 of the circumferential projection 5 of the fitting portion 2 is
For example, if it is as small as less than 20 mm (in terms of injection moldability)
On the other hand, as shown in FIG. 4, on the other hand, T 0 > T 8 means that the above-mentioned internal pressure is generated when the outer diameter dimension D 0 of the circumferential ridge 5 is, for example, a large diameter of 20 mm or more. This is preferable in preventing outward (upward) bulging deformation of the ceiling wall 7 at that time.
【００１５】そして、図１〜図４に於て、熱可塑性エラ
ストマーを射出成形するゲートの位置としては、相手部
材Ｋに嵌合及び接触しない外表面側───例えば、天井
壁部７の外表面（全体外端面９）に“星印”にて示した
位置───に配設するのが望ましい。その理由は、ゲー
トによって微小なバリ等が発生しても、密封性に悪影響
を与えないためである。In FIGS. 1 to 4, the position of the gate for injection molding the thermoplastic elastomer is the outer surface side that does not fit into or contact the mating member K--for example, outside the ceiling wall portion 7. It is desirable to dispose it on the surface (entire outer end surface 9) at the position indicated by "star". The reason is that even if a minute burr or the like is generated by the gate, the hermeticity is not adversely affected.
【００１６】また、本発明に係るシールキャップＳに用
いられる熱可塑性エラストマーとしては、ポリウレタン
エラストマー，ポリエステルエラストマー，動的架橋熱
可塑性エラストマー，又は，オレフィン系エラストマー
等が好適である。特に、オレフィン系エラストマーは、
耐熱性・耐油性に優れ、かつ、材料費も安くて望まし
い。As the thermoplastic elastomer used in the seal cap S according to the present invention, polyurethane elastomer, polyester elastomer, dynamically crosslinked thermoplastic elastomer, olefin elastomer, etc. are suitable. In particular, the olefin elastomer is
Excellent heat resistance and oil resistance, and low material cost is desirable.
【００１７】本発明のシールキャップＳの材質が熱可塑
性の樹脂であるので、コスト面及びリサイクル性、成形
性、生産性の面で、優れている。特に、バリの発生が無
く、無人化で射出成形が可能となるため、後工程（バリ
取りやゲート処理等）が不要となり、生産性が著しく改
善できる。Since the material of the seal cap S of the present invention is a thermoplastic resin, it is excellent in terms of cost, recyclability, moldability and productivity. In particular, since there is no burr and unmanned injection molding is possible, post-processes (deburring, gate treatment, etc.) are not required, and productivity can be significantly improved.
【００１８】本発明に係るシールキャップＳは、従来の
ゴム製のものに代えて、上述の如き、優れた生産性、リ
サイクル性等を有する熱可塑性エラストマーを選定し、
しかも、ゴム製のものに比べて、反撥弾性が低く、クリ
ープを起こしやすいため、内圧が作用すると抜けやすい
という欠点を、嵌着部２に凹窪部６を設けて、短筒壁部
８を形成し、かつ、外周面に複数本（２本以上）の周凸
条５…を突設することで、内圧が作用した状態となる
と、短筒壁部８が拡径方向へ変形して、周凸条５…を外
径方向へ強く、孔部１内周面へ圧接させ、接触面圧を高
めて、密封性を保ちつつ、摩擦抵抗を増加させて、見事
に解消しているといえる。For the seal cap S according to the present invention, a thermoplastic elastomer having excellent productivity, recyclability and the like as described above is selected in place of the conventional rubber cap.
In addition, compared with the rubber-made one, the impact resilience is lower and the creep is more likely to occur, so that it is easy to come off when the internal pressure acts. By forming a plurality of (two or more) peripheral ridges 5 on the outer peripheral surface, the short cylinder wall portion 8 is deformed in the radial direction when the internal pressure is applied, It can be said that the circumferential ridges 5 are strongly pressed in the outer diameter direction and pressed against the inner circumferential surface of the hole 1 to increase the contact surface pressure, maintain the sealing performance, and increase the friction resistance, thereby eliminating it brilliantly. .
【００１９】下記の表１は、内圧容器（相手部材Ｋ）の
孔部に各種の形状と材質のシールキャップを嵌着し、80
℃にて１時間放置し、次に、室温まで冷却し、その後、
80℃にて１時間放置して、シールキャップが抜け出るか
否かの実験（「抜け性」の実験）を行った結果を示す。In Table 1 below, seal caps of various shapes and materials are fitted into the holes of the internal pressure container (counterpart member K),
Let stand at ℃ for 1 hour, then cool to room temperature, then
The following shows the result of an experiment (an experiment of "removability") whether the seal cap comes out by leaving it at 80 ° C for 1 hour.
【００２０】[0020]
【表１】 [Table 1]
【００２１】上記表１に於て、超低密度ポリエチレン
（超低密度ＰＥともいう）とは、熱可塑性エラストマー
でないところの超低密度ポリエチレンであって、日本ユ
ニカー株式会社製のＮＶＣ−ＦＬＸを用いた。熱可塑性
ポリウレタンエラストマーとしては、株式会社クラレの
ミラクロンＵを用い、熱可塑性ポリエステルエラストマ
ーとしては、三菱化学株式会社製のプリマロイを用い、
動的架橋熱可塑性エラストマーとしては、東洋紡績株式
会社のサーリンクを用い、オレフィン系熱可塑性エラス
トマーとしては、エーイーエス・ジャパン株式会社のサ
ントプレーンを用いた。また、形状として、形状Ａ〜Ｆ
は、次の表２のように、図６〜図11が対応している。In Table 1 above, ultra low density polyethylene (also referred to as ultra low density PE) is ultra low density polyethylene that is not a thermoplastic elastomer, and is NVC-FLX manufactured by Nippon Unicar Co., Ltd. I was there. As the thermoplastic polyurethane elastomer, Miracle U made by Kuraray Co., Ltd. is used, and as the thermoplastic polyester elastomer, Primalloy made by Mitsubishi Chemical Co., Ltd. is used.
As the dynamically crosslinked thermoplastic elastomer, Surlink from Toyobo Co., Ltd. was used, and as the olefinic thermoplastic elastomer, Santoprene from AES Japan Co., Ltd. was used. Further, as the shape, shapes A to F
6 to 11 correspond to each other as shown in Table 2 below.
【００２２】[0022]
【表２】 [Table 2]
【００２３】各形状について簡略説明すれば、形状Ａ
（図６）は、上方開口条凹窪部11が形成されているが、
嵌着部12には（内圧が作用する）凹窪部が存在せず、し
かも、この嵌着部12の外周面に周凸条が存在しない形状
である。To briefly explain each shape, the shape A
(FIG. 6), the upper opening streak concave portion 11 is formed,
The fitting portion 12 has a shape in which no concave portion (on which the internal pressure acts) does not exist, and moreover, the outer peripheral surface of the fitting portion 12 does not have a circumferential ridge.
【００２４】形状Ｂ（図７）は、嵌着部13に（内圧が作
用する）凹窪部14が設けられているが、しかし、周凸条
が無い。形状Ｃ（図８）と形状Ｄ（図９）は、嵌着部13
に（内圧が作用する）凹窪部14が設けられ、かつ、この
凹窪部14には、６枚の星形リブ15…が形成されていると
共に、嵌着部13には周凸条が無い形状である。星形リブ
15の軸心方向寸法（高さ）が、形状Ｃ（図８）では凹窪
部14の深さ寸法に相当し、形状Ｄ（図９）では、凹窪部
14の深さ寸法の約半分である。In the shape B (FIG. 7), the fitting portion 13 is provided with the concave depression portion 14 (on which the internal pressure acts), but there is no circumferential convex stripe. The shape C (FIG. 8) and the shape D (FIG. 9) are different from each other in the fitting portion 13
Is provided with a concave recess portion 14 (on which an internal pressure acts), and six concave ribs 15 are formed in the concave recess portion 14, and the fitting portion 13 has a circumferential ridge. It has no shape. Star rib
The axial dimension (height) of 15 corresponds to the depth dimension of the concave portion 14 in the shape C (FIG. 8), and the concave dimension in the shape D (FIG. 9).
It is about half of 14 depth dimensions.
【００２５】形状Ｅ（図10）は、嵌着部16に（内圧が作
用する）凹窪部14が設けられている。しかし、嵌着部16
の外周面は、下方拡径テーパ状部と下方縮径短テーパ部
とから成る緩やかな山形突条17が一本形成されている。
形状Ｆ（図11）は、図１〜図３にて既に説明した形状の
ものである。なお、図６〜図11の各図に於て、（イ）は
平面図を、（ロ）は正面図を、（ハ）は（イ）のａ−ａ
断面図を示している。The shape E (FIG. 10) is such that the fitting portion 16 is provided with the concave recess portion 14 (on which the internal pressure acts). However, the fitting part 16
On the outer peripheral surface of, a single gentle ridge 17 is formed, which is composed of a downward diameter-increased taper portion and a downward diameter-reduction short taper portion.
The shape F (FIG. 11) is the shape already described with reference to FIGS. In each of FIGS. 6 to 11, (a) is a plan view, (b) is a front view, and (c) is a-a of (a).
A cross-sectional view is shown.
【００２６】表１にもどって説明すれば、比較例６は、
形状Ｆであったとしても、材質が超低密度ＰＥであるこ
とで、抜けを発生した。これに対し、材質を熱可塑性エ
ラストマーとした実施例１，２，３，４は全て（抜けを
発生せず）「合格」であった。そして、材質が本発明と
同じとしても、形状Ｂ（図７）とした比較例７，８，
９，10では、内圧を受けた際に局部的に大きな圧接面圧
となるべき周凸条が無いので、孔との摩擦抵抗が小さく
て、抜けを発生する。要するに、上記表１から、本発明
のように、材質を熱変形の度合が少ない熱可塑性エラス
トマーとすると共に、複数本の同凸条５…を嵌着部２に
設け、かつ、凹窪部６を内端面２ａから凹設することに
より、シールキャップＳの抜けを、確実に防止できるこ
とが、明らかとなる。Returning to Table 1, the comparative example 6 is as follows.
Even if the shape was F, the material was an ultra-low density PE, so that the omission occurred. On the other hand, all of Examples 1, 2, 3, and 4 in which the material was a thermoplastic elastomer were “passed” (no omission occurred). And, even if the material is the same as that of the present invention, Comparative Examples 7, 8 having the shape B (FIG. 7)
In Nos. 9 and 10, there is no circumferential ridge which should locally generate a large pressure contact surface pressure when receiving internal pressure, so that frictional resistance with the hole is small and slippage occurs. In short, from Table 1 above, as in the present invention, the material is a thermoplastic elastomer having a low degree of thermal deformation, a plurality of the same ridges 5 are provided in the fitting portion 2, and the concave portion 6 is provided. It becomes clear that the seal cap S can be surely prevented from coming off by forming the concave portion from the inner end surface 2a.
【００２７】次に、表３は上述の表１の場合と同様の
「抜け性」の実験を行った結果を示す。Next, Table 3 shows the result of conducting the "removability" experiment similar to the case of Table 1 above.
【００２８】[0028]
【表３】 [Table 3]
【００２９】上記表３に於て用いた材質については、表
１で述べたと同じものである。また、形状Ｇは、図12に
示すように、嵌着部13に（内圧が作用する）凹窪部14が
設けられているが、外周面に周凸条が無い。そして、嵌
着部13の外径寸法が、既述の図７よりも、大きい。形状
Ｈ（図13）は、図１〜図３にて説明した形状であり、外
径Ｄ0 が大きいと共に天井壁部７の肉厚寸法Ｔ0 が短筒
壁部８の肉厚寸法Ｔ8 と等しい点である。The materials used in Table 3 are the same as those described in Table 1. Further, in the shape G, as shown in FIG. 12, the fitting portion 13 is provided with the concave concave portion 14 (on which the internal pressure acts), but the outer peripheral surface is not provided with the circumferential convex stripes. The outer diameter dimension of the fitting portion 13 is larger than that in FIG. 7 described above. The shape H (FIG. 13) is the shape described in FIGS. 1 to 3, in which the outer diameter D 0 is large and the wall thickness dimension T 0 of the ceiling wall portion 7 is the wall thickness dimension T 8 of the short tubular wall portion 8. Is equal to.
【００３０】形状Ｉは、図14に示すように、上述の第２
の実施の形態（図４）に対応する実施品である。即ち、
外径Ｄ0 が大きいことに伴って天井壁部７の肉厚寸法Ｔ
0 を、短筒壁部８の肉厚寸法Ｔ8 よりも十分に大きく設
定している。As shown in FIG. 14, the shape I has the above-mentioned second shape.
It is an implementation product corresponding to the embodiment (FIG. 4). That is,
Due to the large outer diameter D 0, the wall thickness dimension T of the ceiling wall portion 7
0 is set sufficiently larger than the wall thickness dimension T 8 of the short tubular wall portion 8.
【００３１】この表３から、以下のことが分かる。つま
り、比較例11又は比較例12では、図12のように、内圧を
受けた際に局部的に大きな圧接面圧となるべき周凸条が
無いので、孔との摩擦抵抗が小さく、抜けを発生する。From Table 3, the following can be seen. In other words, in Comparative Example 11 or Comparative Example 12, as shown in FIG. 12, there is no circumferential ridge that should be locally large pressure contact surface pressure when receiving internal pressure, so the frictional resistance with the hole is small, and there is no omission. Occur.
【００３２】これに対し、実施例５，実施例７では、形
状Ｈ（図13）として、複数本の周凸条５…を形成して、
凹窪部６内に、内圧を受けた際、短筒壁部８が外径拡大
方向へ弾性変形しようとして、周凸条５…が強い面圧
で、相手部材Ｋの孔部１の内面に圧接し、摩擦抵抗が増
加して、抜けが生じないはずである。しかしながら、外
径寸法Ｄ0 が大きく、天井壁部７の肉厚寸法Ｔ0 が比較
的に小さいために、この天井壁部７が内圧にて上方山形
に膨らんで、外径寸法Ｄ0 が僅かに縮径させ、これに伴
って、シールキャップＳの少しの抜けを、発生した。On the other hand, in the fifth and seventh embodiments, a plurality of circumferential ridges 5 ... Are formed as the shape H (FIG. 13),
When the internal pressure is applied to the concave portion 6, the short cylindrical wall portion 8 tends to elastically deform in the outer diameter expanding direction, and the circumferential projections 5 ... It should come in contact with pressure and increase frictional resistance so that it does not come off. However, since the outer diameter dimension D 0 is large and the wall thickness dimension T 0 of the ceiling wall portion 7 is relatively small, the ceiling wall portion 7 swells in an upward chevron shape due to the internal pressure, and the outer diameter dimension D 0 is small. The diameter of the seal cap S was reduced, and the seal cap S was slightly pulled out.
【００３３】これに対し、図14に示した形状Ｉを備えた
ところの実施例６，実施例８は、図13と相違する点は、
天井壁部７の肉厚寸法Ｔ0 が十分に大きくして、上述の
上方山形に膨らむ変形を、阻止し、もって、外径寸法Ｄ
0 が十分に増加するように短筒壁部８を拡径させて、周
凸条５…が確実に、相手部材Ｋの孔部内面に、極めて大
きい面圧で圧接させ、それによって、大きな摩擦抵抗力
を発生させることで、抜けを防止できたと考えられる。In contrast, the sixth and eighth embodiments having the shape I shown in FIG. 14 differ from those of FIG. 13 in that
The wall thickness dimension T 0 of the ceiling wall portion 7 is made sufficiently large to prevent the above-mentioned upward bulging deformation, and thus the outer diameter dimension D.
The diameter of the short cylindrical wall portion 8 is expanded so that 0 can be sufficiently increased, and the circumferential ridges 5 are surely brought into pressure contact with the inner surface of the hole portion of the mating member K with an extremely large surface pressure, thereby causing a large friction. It is considered that the omission could be prevented by generating resistance.
【００３４】要するに、上記表３から、本発明のよう
に、材質を熱可塑性エラストマーとすると共に、複数本
の周凸条５…を嵌着部２に設け、かつ、凹窪部６を内端
面２ａから凹設し、さらに望ましくは、凹窪部６の奥端
面から全体外端面９までの肉厚寸法Ｔ0 を、増加させる
ことにより、シールキャップの抜けを、有効に防止でき
ることが明らかとなる。In summary, from Table 3 above, as in the present invention, the material is a thermoplastic elastomer, a plurality of circumferential projections 5 are provided in the fitting portion 2, and the concave portion 6 is formed on the inner end surface. It is apparent that the seal cap can be effectively prevented from coming off by increasing the thickness T 0 from the inner end surface of the concave portion 6 to the entire outer end surface 9 by providing the concave portion from 2a. .
【００３５】[0035]
【発明の効果】本発明は上述の構成により次のような著
大な効果を奏する。
（請求項１，２によれば、）内圧が発生したときにも抜
けが発生せず、確実に密封できる。例えば、カーエアコ
ンのコンプレッサーを出荷する場合にコンプレッサー本
体に封入された冷凍機油が、自動車に組立てられるまで
の期間、確実に、抜け出ることなく、密封機能を発揮で
きる。しかも、熱可塑性エラストマーの射出成形にて、
バリの発生を抑えて、無人で大量成形が実現でき、コス
トダウンを図り得ると共に生産性も高く、かつ、リサイ
クルも可能である。特に、樹脂は、従来のゴム製のもの
よりも硬くて、剛性も高いにかかわらず、周凸条５…に
よって、嵌着も軽く、かつ、内圧が発生した際には、凹
窪部６と共に、摩擦抵抗を増加させて、確実に抜けを防
止する。The present invention has the following significant effects with the above-mentioned configuration. (According to the first and second aspects of the present invention) Even when an internal pressure is generated, the internal pressure does not come off, and it is possible to reliably seal. For example, when shipping a compressor for a car air conditioner, the refrigerating machine oil enclosed in the compressor body can surely perform a sealing function without coming out until it is assembled into an automobile. Moreover, in injection molding of thermoplastic elastomer,
Burrs can be suppressed, unmanned mass molding can be realized, cost can be reduced, productivity is high, and recycling is possible. In particular, the resin is harder than the conventional one made of rubber and has a high rigidity, but due to the circumferential ridges 5, the fitting is light, and when the internal pressure is generated, the resin together with the concave portion 6 , Increase frictional resistance to prevent slipping out.
【００３６】（請求項３によれば、）凹窪部６の奥端部
から全体外端面９までの肉厚寸法Ｔ 0 が大きくて、内圧
が作用したときに、山形に膨らむ変形を阻止し、これに
よって、短筒壁部８の変形を引き起こすことを防止し
て、抜けをさらに確実に防ぎ得る。特に、大径のシール
キャップの抜けを防ぐのに有効である。
（請求項４によれば、）射出成形の後工程として、ゲー
ト処理（ゲート除去作業）が不要となる。これによっ
て、生産性がさらに高められる。また、ゲートの存在に
よって、相手部材Ｋの孔部１との密封性が害されること
がない。
（請求項５によれば、）射出成形にて容易に大量生産が
可能である。かつ、リサイクル可能なため、省資源に寄
与できる。(According to claim 3) The rear end portion of the recessed portion 6
Thickness T from the whole to the outer end face 9 0 Is large, internal pressure
When it is acted on, it prevents the deformation that bulges into a chevron,
Therefore, it is possible to prevent the short tubular wall portion 8 from being deformed.
Therefore, it is possible to more surely prevent the omission. Especially for large diameter seals
It is effective in preventing the cap from coming off.
As a post-process of injection molding (according to claim 4),
The process (gate removal work) becomes unnecessary. By this
Productivity is further enhanced. Also, due to the existence of the gate
Therefore, the sealing property of the mating member K with the hole 1 is impaired.
There is no.
(According to claim 5) injection molding facilitates mass production
It is possible. And because it is recyclable, it saves resources.
Can be given.
【図１】本発明の実施の一形態を示す拡大断面図であ
る。FIG. 1 is an enlarged cross-sectional view showing an embodiment of the present invention.
【図２】外観説明図である。FIG. 2 is an external view explanatory diagram.
【図３】使用方法説明のための斜視図である。FIG. 3 is a perspective view for explaining a method of use.
【図４】他の実施の形態を示す断面図である。FIG. 4 is a cross-sectional view showing another embodiment.
【図５】要部拡大断面図である。FIG. 5 is an enlarged sectional view of an essential part.
【図６】形状Ａの説明図である。FIG. 6 is an explanatory diagram of shape A.
【図７】形状Ｂの説明図である。FIG. 7 is an explanatory diagram of shape B.
【図８】形状Ｃの説明図である。FIG. 8 is an explanatory diagram of a shape C.
【図９】形状Ｄの説明図である。FIG. 9 is an explanatory diagram of a shape D.
【図10】形状Ｅの説明図である。FIG. 10 is an explanatory diagram of a shape E.
【図11】形状Ｆの説明図である。FIG. 11 is an explanatory diagram of a shape F.
【図12】形状Ｇの説明図である。FIG. 12 is an explanatory diagram of a shape G.
【図13】形状Ｈの説明図である。FIG. 13 is an explanatory diagram of a shape H.
【図14】形状Ｉの説明図である。FIG. 14 is an explanatory diagram of shape I.
１ 孔部 ２ 嵌着部 ２ａ 内端面 ３ 外鍔部 ５ 周凸条 ６ 凹窪部 ６ａ 奥端面 ８ 短筒壁部 ９ 全体外端面 Ｓ シールキャップ Ｋ 相手部材 1 hole 2 Fitting part 2a inner end face 3 outer collar part 5 round ridges 6 concave part 6a Inner surface 8 Short cylinder wall 9 Overall outer face S seal cap K mating member
Claims (5)
相手部材の孔部に圧入嵌合される嵌着部の外周面に、複
数本の周凸条を突設し、かつ、上記嵌着部の内端面から
凹窪部を形成したことを特徴とするシールキャップ。1. A thermoplastic elastomer as a whole,
A plurality of peripheral projections are provided on the outer peripheral surface of the fitting portion press-fitted into the hole of the mating member, and a concave portion is formed from the inner end surface of the fitting portion. Seal cap to be used.
相手部材の孔部に圧入嵌合される嵌着部の外周面に、複
数本の周凸条を突設し、かつ、上記嵌着部の内端面から
上記周凸条が存在する軸心方向の深さ位置までの範囲に
凹窪部を設けて、該嵌着部に短筒壁部を形成し、該短筒
壁部に内圧が作用した状態で該短筒壁部が拡径方向に変
形しようとして上記周凸条が上記相手部材の孔部に接触
する圧力が増大するよう構成されたことを特徴とするシ
ールキャップ。2. A thermoplastic elastomer as a whole,
An axial direction in which a plurality of circumferential ridges are provided on the outer peripheral surface of the fitting portion press-fitted into the hole of the mating member, and the circumferential ridge exists from the inner end surface of the fitting portion. The recessed portion is provided in a range up to the depth position, and the short tubular wall portion is formed in the fitting portion, and the short tubular wall portion expands in the radial direction in the state where the internal pressure acts on the short tubular wall portion. A seal cap, wherein the circumferential projection is configured to increase the pressure of contact with the hole of the mating member to be deformed.
厚寸法を、上記短筒壁部の肉厚寸法よりも、大に設定し
た請求項２記載のシールキャップ。3. The seal cap according to claim 2, wherein the thickness dimension from the rear end surface of the concave portion to the entire outer end surface is set larger than the thickness dimension of the short tubular wall portion.
にゲートを配設して熱可塑性エラストマーを射出成形し
た請求項１，２又は３記載のシールキャップ。4. The seal cap according to claim 1, wherein a thermoplastic elastomer is injection-molded by arranging a gate on the outer surface side that does not fit or contact the mating member.
エラストマー，ポリエステルエラストマー，動的架橋熱
可塑性エラストマー，又は，オレフィン系エラストマー
である請求項１，２，３又は４記載のシールキャップ。5. The seal cap according to claim 1, 2, 3 or 4, wherein the thermoplastic elastomer is a polyurethane elastomer, a polyester elastomer, a dynamically crosslinked thermoplastic elastomer, or an olefin-based elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002019379A JP2003222291A (en) | 2002-01-29 | 2002-01-29 | Seal cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002019379A JP2003222291A (en) | 2002-01-29 | 2002-01-29 | Seal cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003222291A true JP2003222291A (en) | 2003-08-08 |
Family
ID=27743253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002019379A Pending JP2003222291A (en) | 2002-01-29 | 2002-01-29 | Seal cap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003222291A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010275793A (en) * | 2009-05-29 | 2010-12-09 | Kitz Corp | Protective cap for pressure bonding surface of meter unit and water meter unit |
| US7883269B2 (en) * | 2005-02-01 | 2011-02-08 | Thk Co., Ltd. | Structure for closing a rail mounting hole |
| JP2013228131A (en) * | 2012-04-25 | 2013-11-07 | Osaka Gas Co Ltd | Protection cap for plug of buried gas cock |
| CN112652905A (en) * | 2020-12-14 | 2021-04-13 | 潮州三环（集团）股份有限公司 | Sealed binding post and compressor |
| JP2021085349A (en) * | 2019-11-27 | 2021-06-03 | 愛三工業株式会社 | Fuel passage sealing structure for fuel supply device |
-
2002
- 2002-01-29 JP JP2002019379A patent/JP2003222291A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7883269B2 (en) * | 2005-02-01 | 2011-02-08 | Thk Co., Ltd. | Structure for closing a rail mounting hole |
| JP2010275793A (en) * | 2009-05-29 | 2010-12-09 | Kitz Corp | Protective cap for pressure bonding surface of meter unit and water meter unit |
| JP2013228131A (en) * | 2012-04-25 | 2013-11-07 | Osaka Gas Co Ltd | Protection cap for plug of buried gas cock |
| JP2021085349A (en) * | 2019-11-27 | 2021-06-03 | 愛三工業株式会社 | Fuel passage sealing structure for fuel supply device |
| JP7282658B2 (en) | 2019-11-27 | 2023-05-29 | 愛三工業株式会社 | Fuel passage sealing structure for fuel supply device |
| CN112652905A (en) * | 2020-12-14 | 2021-04-13 | 潮州三环（集团）股份有限公司 | Sealed binding post and compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6818303B2 (en) | gasket | |
| US6464233B1 (en) | Bellows-type cover member | |
| JPH09112758A (en) | Manufacture of end section piece, end section piece and connector manufactured by method thereof and circuit containing such ccnnector | |
| US20010045784A1 (en) | Rotary electric machine | |
| JP2003222291A (en) | Seal cap | |
| JP5725498B2 (en) | Seal structure | |
| CN103026107A (en) | Hole plug | |
| JP7181581B2 (en) | Piping connection structure and connection member | |
| JP2009085265A (en) | Boot for constant velocity joint | |
| JP7181582B2 (en) | Piping connection structure and connection member | |
| JP4192765B2 (en) | Constant velocity joint boots | |
| JP5497675B2 (en) | Piping cap | |
| JP2015055298A (en) | Dust cover | |
| JPH10311053A (en) | Method for sealing a space between circular wall forming an opening part and pipe end part inserted into opening part | |
| JP2007064367A (en) | Pipe coupling structure | |
| JP2005228582A (en) | Grommet | |
| JP2011033065A (en) | Boot for constant velocity joint | |
| JP2010025255A (en) | Boot for constant velocity joint | |
| JP2005315327A (en) | Hole plug | |
| JP3890466B2 (en) | Manufacturing method of resin boot for constant velocity joint | |
| JP2003194093A (en) | Resin boots for constant velocity joints | |
| JP7170243B2 (en) | Piping connection structure and connection member | |
| JP2020063811A (en) | Resin molding article | |
| JP2008082432A (en) | Boot fastening structure for constant velocity joint | |
| JP4562592B2 (en) | boots |