JP2003028356A - Pipe joint structure - Google Patents
Pipe joint structureInfo
- Publication number
- JP2003028356A JP2003028356A JP2001216239A JP2001216239A JP2003028356A JP 2003028356 A JP2003028356 A JP 2003028356A JP 2001216239 A JP2001216239 A JP 2001216239A JP 2001216239 A JP2001216239 A JP 2001216239A JP 2003028356 A JP2003028356 A JP 2003028356A
- Authority
- JP
- Japan
- Prior art keywords
- elastic material
- pipe joint
- joint structure
- joint body
- insertion 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.)
- Granted
Links
Landscapes
- Joints With Sleeves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、管継手構造に係
り、特に、水やガス等の配管に用いられる継手構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint structure, and more particularly to a joint structure used for piping of water, gas and the like.
【０００２】[0002]
【従来の技術】従来、例えば、床暖房設置の配管（家庭
用屋内配管）に於て、図５〜図７に示すような管継手構
造のものが使用されている。即ち、31はヘッド部であっ
て、複数の分岐用孔部32…を有するヘッド本体33と、こ
れを包囲する保温材34とを、備えている。さらに、この
ヘッド部31の孔部32…に挿入される挿入部35と、外鍔部
36と、を有するジョイント本体37…は、上記挿入部35に
２本の凹周溝38, 38が形成されていて、この凹周溝38,
38にＯリング39, 39を嵌着し、Ｏリング39, 39にて流体
を密封状として挿入部が上記ヘッド部31の孔部32に挿入
され、クリップ40にて、ヘッド本体33の孔部32の開口端
側の外鍔部41と、ジョイント本体37の外鍔部36とを、連
結して、抜止めしていた。2. Description of the Related Art Conventionally, for example, a pipe having a pipe joint structure as shown in FIGS. That is, 31 is a head portion, which includes a head main body 33 having a plurality of branching hole portions 32, and a heat insulating material 34 surrounding the head main body 33. Further, the insertion portion 35 to be inserted into the hole portion 32 of the head portion 31 and the outer collar portion.
The joint main body 37 having 36 and 36 has two concave circumferential grooves 38, 38 formed in the insertion portion 35.
The O-rings 39 and 39 are fitted to the 38, the fluid is hermetically sealed by the O-rings 39 and 39, and the insertion portion is inserted into the hole 32 of the head portion 31, and the clip 40 is used to form the hole portion of the head body 33. The outer brim portion 41 of the opening end side of 32 and the outer brim portion 36 of the joint body 37 were connected and retained.
【０００３】また、ジョイント本体37は、タケノ子形継
手部42を有するものや、閉じた外端部を有する止水栓状
のものや、雄ネジ部43を有するもの等が使用されてい
る。タケノ子形継手部42を有する場合は、図外の被接続
ホースの端部にこのタケノ子形継手部42を挿入し、図外
のクリップ（又は締付バンド等）にて、接続できる。Further, as the joint main body 37, one having a bamboo shoot-shaped joint portion 42, one having a water stop plug having a closed outer end portion, one having a male screw portion 43, etc. is used. In the case of having the bamboo shoot joint 42, the bamboo shoot joint 42 can be inserted into the end of the connected hose (not shown) and connected by a clip (or tightening band, etc.) not shown.
【０００４】矢印Ａのように、水やガス等の流体がヘッ
ド部31へ流入し、分岐して、各孔部32…に達して、上述
の被接続ホース等にて、所望の場所へ流れてゆく。また
は、各孔部32から流入した水やガス等の流体がヘッド部
31内で合流した後、矢印Ａと逆方向に流れてゆく。ジョ
イント本体37は一般的に耐腐食性金属であり、Ｏリング
39はゴムが用いられる。As indicated by an arrow A, a fluid such as water or gas flows into the head portion 31, branches, reaches each hole portion 32, and flows to a desired place by the above-mentioned connected hose or the like. Go on. Alternatively, the fluid such as water or gas flowing from each hole 32 may be
After merging in 31, flow in the direction opposite to arrow A. The joint body 37 is generally made of a corrosion resistant metal and has an O-ring.
Rubber is used for 39.
【０００５】[0005]
【発明が解決しようとする課題】ところが、従来の図５
〜図７に示したような管継手構造では、次のような問題
がある。
Ｏリング39，39を装着するために深い凹周溝38, 38
をジョイント本体37に加工する必要があり、加工工数が
掛かる。
凹周溝38の底壁44の肉厚Ｔが薄くなり、強度が低下
するので、ジョイント本体37の使用できる材質の選択が
限定され、プラスチック化が困難視されていた。ジョイ
ント本体37の径が小さい場合には特にプラスチック化が
至難である。
Ｏリング39, 39は、シールの安全と信頼性向上のた
め、及び、孔部32とジョイント本体37の軸振れを防止
（センタリング）のために、２個以上を使用せねばなら
ず、凹周溝38, 38を２本以上加工する手間が掛かり、ま
た、組立作業時にＯリング39の嵌め忘れや、傷付きの発
生等の問題が生じたり、アッセンブリにも手間が掛かっ
た。
現在、この種のジョイント本体37としては高価な耐
蝕性金属（例えば耐脱亜鉛黄銅等）が主流であり、メン
テナンスの際、Ｏリング39, 39のみを交換して再使用し
ているのが実状である。そのため、取替え（交換）作業
に手間を要する。However, as shown in FIG.
~ The pipe joint structure as shown in Fig. 7 has the following problems. Deep recessed grooves 38, 38 for mounting O-rings 39, 39
Needs to be processed into the joint body 37, which requires a lot of processing man-hours. Since the wall thickness T of the bottom wall 44 of the recessed circumferential groove 38 becomes thin and the strength decreases, selection of the material that can be used for the joint main body 37 is limited, and it has been difficult to make it plastic. If the diameter of the joint body 37 is small, it is especially difficult to make it plastic. Two or more O-rings 39, 39 must be used to improve the safety and reliability of the seal and to prevent axial runout of the hole 32 and the joint body 37 (centering). It takes time and labor to process two or more grooves 38, 38, and there are problems such as forgetting to fit the O-ring 39 during the assembling work, occurrence of scratches, and the like, and the assembly is troublesome. Currently, the main body of this kind of joint main body 37 is expensive corrosion-resistant metal (for example, dezincing-resistant brass), and the actual situation is to replace only the O-rings 39 and 39 for maintenance. Is. Therefore, the replacement (replacement) work requires time and effort.
【０００６】本発明は、このような従来の問題点を解決
して、機械加工を少なくして製作が容易であり、ジョイ
ント本体の強度低下を防いでプラスチック化を可能と
し、孔部とジョイント本体の軸振れが生じない優れたセ
ンタリングを保って、かつ、密封性も良好であり、さら
に、修理・交換等のメンテナンスも容易・迅速に可能な
管継手構造を、提供することを、目的とする。The present invention solves the above-mentioned problems of the prior art, is easy to manufacture with less machining, prevents the strength of the joint body from being lowered, and enables plasticization, and the hole portion and the joint body. It is an object of the present invention to provide a pipe joint structure that maintains excellent centering in which the shaft runout does not occur, has a good sealing property, and can easily and quickly perform maintenance such as repair and replacement. .
【０００７】[0007]
【課題を解決するための手段】本発明は、相手部材の孔
部へ挿入される挿入部を有するジョイント本体の該挿入
部に、シール用凸条部を有するモールド弾性材を外嵌さ
せたものである。また、本発明は、相手部材の孔部へ挿
入される挿入部を有するジョイント本体の該挿入部に、
シール用凸条部、及び、該シール用凸条部よりも小径で
あって上記孔部へ挿入圧接状態でのつぶし代が小さいセ
ンタリング用凸条部を、一体成形して成るモールド弾性
材を、外嵌させたものである。そして、モールド成形に
よってジョイント本体にモールド弾性材を一体に外嵌形
成した。According to the present invention, a mold elastic material having a sealing ridge is externally fitted to the insertion part of a joint body having an insertion part to be inserted into a hole of a mating member. Is. In addition, the present invention, in the insertion portion of the joint body having an insertion portion to be inserted into the hole of the mating member,
A molding elastic material formed by integrally molding a sealing ridge, and a centering ridge having a smaller diameter than the sealing ridge and having a small crushing allowance in a state of being inserted and pressed into the hole. It is fitted on the outside. Then, the mold elastic material was integrally fitted and formed on the joint body by molding.
【０００８】また、モールド弾性材は短筒形であって、
シール用凸条部を軸心方向の中間部に、センタリング用
凸条部を、軸心方向の先端部と基端部に、夫々、配設し
た。若しくは、モールド弾性材は短筒形であって、シー
ル用凸条部を軸心方向基端部に、センタリング用凸条部
を軸心方向中間部及び先端部に、夫々、配設した。ま
た、ジョイント本体の挿入部には、モールド弾性材の平
均肉厚寸法よりも小さな深さ寸法の凹周溝を形成して、
外嵌されたモールド弾性材の脱落防止溝とする。Also, the mold elastic material has a short tubular shape,
The sealing ridges were arranged at the intermediate portion in the axial direction, and the centering ridges were arranged at the front end portion and the base end portion in the axial direction, respectively. Alternatively, the molded elastic material has a short tubular shape, and the sealing ridges are disposed at the axially proximal end portion, and the centering ridges are disposed at the axially central portion and the distal end portion, respectively. Further, in the insertion portion of the joint body, a concave circumferential groove having a depth dimension smaller than the average thickness dimension of the mold elastic material is formed,
The groove is used to prevent the molded elastic material that has been externally fitted from falling off.
【０００９】[0009]
【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。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below in detail based on the illustrated embodiments.
【００１０】図１に於て、ジョイント本体１を例示し、
このジョイント本体１は、従来の図５に示したようなヘ
ッド部31等の相手部材の孔部へ挿入される挿入部２を有
している。このジョイント本体１の材質は各種プラスチ
ック、又は、耐蝕性金属とする。また、中間部位に外鍔
部３が突設され、従来の図５に示したようなクリップ40
にて相手部材（ヘッド部31）へ保持（連結）される。そ
して、挿入部２と軸方向の反対側には、タケノ子形継手
部４が形成され、軸心に沿って流路用孔部５が貫設され
ている。In FIG. 1, the joint body 1 is illustrated,
The joint body 1 has an insertion portion 2 which is inserted into a hole portion of a counterpart member such as the head portion 31 as shown in FIG. The material of the joint body 1 is various plastics or corrosion-resistant metal. Further, the outer collar portion 3 is provided at the intermediate portion so that the clip 40 as shown in FIG.
Are held (connected) to the mating member (head portion 31). Then, a bamboo shoot-shaped joint portion 4 is formed on the side opposite to the insertion portion 2 in the axial direction, and a passage hole portion 5 is provided along the axial center.
【００１１】このようなジョイント本体１の上記挿入部
２に、シール用凸条部６、及び、センタリング用凸条部
７を、一体成形して成る（短筒状の）モールド弾性材10
が、外嵌されている。モールド弾性材10の材質は、ゴム
又は軟質プラスチックから成り、モールド成形金型内
に、ジョイント本体１を設置して後に、ゴム又はプラス
チックを射出成型等にてモールド成形して、挿入部２に
外嵌状に一体的に成形するのが、望ましい。A mold elastic member 10 (in the form of a short tube) formed by integrally molding a sealing ridge 6 and a centering ridge 7 on the insertion portion 2 of the joint body 1 as described above.
But it is fitted. The material of the mold elastic material 10 is made of rubber or soft plastic, and after the joint body 1 is installed in the molding die, the rubber or plastic is molded by injection molding or the like, and the outer portion is inserted into the insertion portion 2. It is desirable to integrally form a fitting shape.
【００１２】このように、ジョイントＪは、ジョイント
本体１とモールド弾性材10とから成る。そして、図１、
及び、その要部を模式的に図示した図３に示した実施の
形態では、センタリング用凸条部７は、シール用凸条部
６よりも小径であって、相手部材の孔部へ挿入圧接状態
でのつぶし代が、シール用凸条部６よりも小さく設定さ
れる。図１に於て、相手部材の孔部（図５のヘッド部31
の孔部32等）の内径をＤ0 とすれば、シール用凸条部６
は十分なつぶし代を有し、他方、センタリング用凸条部
７はこの内径Ｄ0 と同等乃至僅かに大に設定されてい
る。As described above, the joint J is composed of the joint body 1 and the molded elastic material 10. And in FIG.
Further, in the embodiment shown in FIG. 3 schematically showing the main part thereof, the centering ridge 7 has a smaller diameter than the sealing ridge 6, and is inserted and pressure-contacted to the hole of the mating member. The crushing margin in the state is set to be smaller than that of the sealing ridge portion 6. In FIG. 1, the hole of the mating member (the head portion 31 of FIG.
If the inner diameter of the hole 32) of the seal is D 0 , the sealing projection 6
Has a sufficient crushing allowance, while the centering projection 7 is set to be equal to or slightly larger than the inner diameter D 0 .
【００１３】しかも、図１と図３では、シール用凸条部
６は軸心方向の中間部に、センタリング用凸条部７は軸
心方向の先端部と基端部に、夫々、配設されている。基
端部側のセンタリング凸条部７は、１本でも、２本以上
であっても自由である。また、先端部側のセンタリング
凸条部７も、１本でも、２本以上でも良い。また、シー
ル用凸条部６のみを３個以上形成することは、相手部材
の孔部への挿入抵抗が増大するという欠点があるので、
好ましくない。In addition, in FIGS. 1 and 3, the sealing ridge 6 is disposed at the intermediate portion in the axial direction, and the centering ridge 7 is disposed at the front end portion and the base end portion in the axial direction, respectively. Has been done. The number of the centering ridges 7 on the base end side may be one or two or more. Further, the number of the centering ridges 7 on the tip end side may be one or two or more. In addition, forming only three or more sealing ridges 6 has a drawback that the insertion resistance into the hole of the mating member increases.
Not preferable.
【００１４】次に、図２、及び、その要部を模式的に図
示した図４の実施の形態では、短筒形のモールド弾性材
10は、シール用凸条部６を挿入部２の軸心方向基端部
に、センタリング用凸条部７を中間部及び先端部に、夫
々配設している。Next, in FIG. 2 and in the embodiment of FIG. 4 schematically showing the essential parts thereof, a short tube-shaped mold elastic material is used.
The seal ridge 6 is provided at the axially proximal end portion of the insertion portion 2, and the centering ridge portion 7 is provided at the intermediate portion and the tip portion of the insertion portion 2.
【００１５】また、図１又は図２に於て、ジョイント本
体１の挿入部２の外周面には、モールド弾性材10の平均
肉厚寸法よりも小さな深さ寸法Ｇの断面三角形（又は長
方形や台形や半円）等の凹周溝11…が、脱落防止溝とし
て、形成されている。In addition, in FIG. 1 or 2, the outer peripheral surface of the insertion portion 2 of the joint body 1 has a triangular cross section (or rectangular shape or the like) having a depth G smaller than the average thickness of the mold elastic material 10. Recessed circumferential grooves 11, etc., such as a trapezoid and a semicircle) are formed as the drop-preventing grooves.
【００１６】上述の如く、プラスチック製又は金属製の
ジョイント本体１と、シール用凸条部６・センタリング
用凸条部７を一体成形した（ゴム又は軟質プラスチック
製の）モールド弾性材10とを、ジョイントＪが具備して
いる。そして、モールド弾性材10はジョイント本体１と
モールド一体成形するのが望ましいが、それに限らず、
モールド弾性材10とジョイント本体１とを別々に成形し
て後、モールド弾性材10をジョイント本体１の挿入部２
に外嵌条に装着しても良い。そのとき、接着剤を介し
て、挿入部２の外周面と短筒形のモールド弾性材10の内
面とを、固着するのが良いが、接着剤は省略可能であ
る。As described above, the joint body 1 made of plastic or metal, and the molded elastic material 10 (made of rubber or soft plastic) in which the sealing projection 6 and the centering projection 7 are integrally molded, Joint J is equipped with. And it is desirable that the mold elastic material 10 is integrally molded with the joint body 1, but not limited to this,
After molding the molded elastic material 10 and the joint body 1 separately, the molded elastic material 10 is inserted into the insertion portion 2 of the joint body 1.
It may be attached to the outer fitting. At this time, it is preferable that the outer peripheral surface of the insertion portion 2 and the inner surface of the short cylindrical mold elastic material 10 are fixed to each other via an adhesive, but the adhesive can be omitted.
【００１７】モールド弾性材10の脱落防止溝としての凹
周溝11…の横断面形状はＶ字形以外に、矩形や台形とし
たり、半円形としても良く、また、凹周溝11は、モール
ド弾性材10を成形後に挿入部２へ外嵌させる以外に、ジ
ョイント本体１と一体成形する場合にも、モールド弾性
材10の脱落防止用として有益である。The cross-sectional shape of the concave circumferential groove 11 ... As the drop-preventing groove of the mold elastic material 10 may be rectangular, trapezoidal or semicircular in addition to the V-shape. In addition to fitting the material 10 onto the insertion portion 2 after molding, it is also useful for preventing the mold elastic material 10 from falling off when it is integrally molded with the joint body 1.
【００１８】なお、図１のように、凸条部６，７の山の
位置と、凹周溝11の軸心方向位置を一致させるのが、挿
入作業時の脱落防止上有効であるが、図２のように軸心
方向位置をずらせることも可能である。また、この凹周
溝11は省略可能であり、若しくは、図示省略したが挿入
部２の外周面から突状に突条部を形成して、モールド弾
性材10の脱落防止を図っても良い。It should be noted that, as shown in FIG. 1, it is effective to prevent the falling-out during the insertion work by making the positions of the ridges of the ridges 6 and 7 coincide with the positions of the concave circumferential groove 11 in the axial direction. It is also possible to shift the axial direction position as shown in FIG. Further, the concave circumferential groove 11 can be omitted, or, although not shown, a projecting ridge portion may be formed in a protruding shape from the outer peripheral surface of the insertion portion 2 to prevent the mold elastic material 10 from falling off.
【００１９】上述の本発明に係るジョイントＪは、床暖
房配管に用いた場合に、相手部材として配管ヘッド部に
挿入され、クリップ（図５の符号40参照）にて抜止めさ
れ、水やガス等の密封作用を、シール用凸条部６にて、
行う。このとき、ジョイント本体１の挿入部２に外嵌し
たモールド弾性材10は、山の高さの相違するシール用凸
条部６とセンタリング用凸条部７を有することで、孔部
への挿入抵抗が減少して、スムーズな挿入接続作業が実
現し、かつ、シール性（密封性能）及びセンタリングを
確保できる。When the above-described joint J according to the present invention is used for floor heating piping, it is inserted into a piping head portion as a mating member and is retained by a clip (see reference numeral 40 in FIG. 5) to prevent water or gas. The sealing ridge portion 6 has a sealing effect such as
To do. At this time, the mold elastic material 10 externally fitted to the insertion portion 2 of the joint body 1 has the sealing ridge 6 and the centering ridge 7 having different mountain heights, so that it can be inserted into the hole. Resistance is reduced, smooth insertion and connection work can be realized, and sealing performance (sealing performance) and centering can be secured.
【００２０】本発明によれば、従来のＯリングのような
深い溝が不要となるので、加工が簡略化でき、さらに、
ジョイント本体１の挿入部２の肉厚寸法も極端に小さな
部分が発生せず、機械的強度もアップし、これに伴っ
て、ジョイント本体１に使用可能な材質の幅も広がり、
特に径の小さなジョイントＪのプラスチック化も実現で
きる。According to the present invention, since a deep groove unlike the conventional O-ring is not required, the processing can be simplified and further,
The insertion portion 2 of the joint body 1 does not have an extremely small wall thickness, the mechanical strength is improved, and the width of the material usable for the joint body 1 is widened accordingly.
In particular, the joint J having a small diameter can be made plastic.
【００２１】また、脱落防止溝としての凹周溝11は浅く
小さいので、簡単に形成でき、特に、プラスチックのイ
ンジェクション成形でジョイント本体１を製造する場合
も容易である。なお、インジェクション成形の際、上記
凹周溝11を小凸条に形成しても良く、そうすれば、射出
成形金型側は小凹周溝として、金型の加工も容易とな
る。Further, since the concave circumferential groove 11 as the drop-preventing groove is shallow and small, it can be easily formed, and in particular, it is easy to manufacture the joint body 1 by injection molding of plastic. In the injection molding, the concave circumferential groove 11 may be formed as a small convex strip, which makes the injection molding die side a small concave circumferential groove, which facilitates processing of the die.
【００２２】また、ゴム又は軟質プラスチックのモール
ド弾性材10は、一体成形とすることで、従来のＯリング
のような装着忘れ、及び、装着時の傷付きを、解消で
き、かつ、アッセンブリの手間も省き得る。また、一体
成形にてシール用凸条部６・センタリング用突条部７の
数を確保することができ、孔部とのセンタリングを維持
して、シールの安定性・信頼性を向上できる。Further, by integrally molding the molded elastic material 10 of rubber or soft plastic, it is possible to eliminate the forgetting to attach like the conventional O-ring and the scratches at the time of attaching, and the assembly labor. Can also be omitted. In addition, the number of sealing projections 6 and the number of centering projections 7 can be secured by integral molding, centering with the holes can be maintained, and the stability and reliability of the seal can be improved.
【００２３】さらに、メンテナンス（修理交換）作業
時、安価なプラスチック化したジョイント本体１であれ
ば、そのまま廃棄できる。あるいは、接着剤なしでジョ
イント本体１の挿入部にモールド弾性材10を外嵌してあ
る構造ならば、分別廃棄も可能で、環境保護にも貢献す
る。Further, at the time of maintenance (repair and replacement) work, the inexpensive plastic joint body 1 can be discarded as it is. Alternatively, if the mold elastic material 10 is externally fitted to the insertion portion of the joint body 1 without an adhesive, it can be separated and discarded, which also contributes to environmental protection.
【００２４】なお、本発明は床暖房に限らず、他の用途
にも応用可能である。また、図１又は図２に於て、タケ
ノ子形継手部４を、他の形状───ネジ形継手部やＣ形
止め輪等───とすることも可能である。The present invention is not limited to floor heating, but can be applied to other uses. In addition, in FIG. 1 or FIG. 2, the bamboo shoot joint 4 may have another shape such as a screw joint or a C-shaped retaining ring.
【００２５】[0025]
【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。The present invention has the following significant effects with the above-mentioned configuration.
【００２６】（請求項１，２によれば、）従来の図７で
示したＯリングのような深い凹周溝が省略でき、挿入部
２の加工が簡略化でき、かつ、挿入部２の全体の肉厚も
十分に厚く確保できて、機械的強度が向上し、材料の選
択の幅が広がり、径の小さなジョイント本体１でも、プ
ラスチック化が可能となる。(According to claims 1 and 2) The deep concave circumferential groove such as the conventional O-ring shown in FIG. 7 can be omitted, the processing of the insertion portion 2 can be simplified, and the insertion portion 2 The entire thickness can be ensured to be sufficiently thick, the mechanical strength is improved, the range of selection of materials is widened, and even the joint body 1 having a small diameter can be made plastic.
【００２７】（請求項２によれば、）従来のＯリングの
場合の装着忘れを防止でき、装着作業時のシール部の傷
付きを防止できる。また、相手部材の孔部の軸心と、挿
入部２の軸心とが自動的に一致して、スムーズに、か
つ、確実に挿入でき、シール性（密封性能）も良好であ
る。また、シール用凸条部６の数を増加することも容易
で、安定したシール性を確保でき、シール寿命も延長で
きる。(According to the second aspect) It is possible to prevent forgetting to attach the conventional O-ring and prevent damage to the seal portion during the attaching work. In addition, the axis of the hole of the mating member and the axis of the insertion portion 2 are automatically aligned to allow smooth and reliable insertion, and the sealing property (sealing performance) is good. In addition, it is easy to increase the number of the sealing ridges 6, the stable sealing performance can be secured, and the sealing life can be extended.
【００２８】（請求項３によれば、）モールド弾性材10
がモールド成形によって一体化されているので、従来の
Ｏリングのような（シール材の）装着忘れを防止でき、
装着時の傷付き防止も図り得る。かつ、アッセンブリ作
業の手間も不要となる。Mold elastic material 10 (according to claim 3)
Since it is integrated by molding, it is possible to prevent forgetting to attach (sealing material) like the conventional O-ring,
It is also possible to prevent scratches during mounting. At the same time, the labor of assembly work is unnecessary.
【００２９】（請求項４によれば、）先端部側のセンタ
リング用凸条部７によって相手部材の孔部へ誘導案内さ
れ、スムーズに挿入可能であり、しかも、挿入装着後
は、ジョイント本体１と孔部の軸心が相互に傾斜して
も、中間位置のシール用凸条部６は全周にわたって密封
性を維持する。(According to the fourth aspect) The centering ridge 7 on the tip end side is guided and guided to the hole of the mating member so that the joint can be smoothly inserted. Even if the axial centers of the hole and the hole are inclined to each other, the sealing projection 6 at the intermediate position maintains the hermeticity over the entire circumference.
【００３０】（請求項５によれば、）センタリング用凸
条部７…を軸心方向に長く配設可能であり、かつ、本数
も増加可能であるので、一層、スムーズに相手部材の孔
部へ（センタリングしながら）挿入できる。かつ、挿入
状態で、シール用凸条部６が強く弾性的に圧縮すること
が可能であって、十分な密封性能を発揮する。(According to the fifth aspect) The centering ridges 7 ... Can be arranged long in the axial direction, and the number can be increased, so that the hole of the mating member can be made smoother. Can be inserted (while centering). In addition, in the inserted state, the sealing projection 6 can be strongly and elastically compressed, and sufficient sealing performance is exhibited.
【００３１】（請求項６によれば、）挿入部２とモール
ド弾性材10との相対的位置ずれが防止でき、モールド弾
性材10の傷付きや異常変形を防止できる。また、凹周溝
11の深さ寸法は小さいので、（従来の図７で述べた底壁
44強度の過小の問題を解決して、）ジョイント本体１を
プラスチック製とすることもできる。また、この凹周溝
11は成形も容易である。(According to the sixth aspect) It is possible to prevent relative displacement between the insertion portion 2 and the mold elastic material 10, and to prevent the mold elastic material 10 from being scratched or abnormally deformed. Also, the concave groove
Since the depth dimension of 11 is small, (the conventional bottom wall described in FIG.
44) The joint body 1 may be made of plastic by solving the problem of insufficient strength. Also, this concave circumferential groove
11 is easy to mold.
【図１】本発明の実施の一形態を示す要部の断面図であ
る。FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.
【図２】本発明の実施の他の形態を示す要部の断面図で
ある。FIG. 2 is a cross-sectional view of an essential part showing another embodiment of the present invention.
【図３】簡略説明図である。FIG. 3 is a simplified explanatory diagram.
【図４】他の簡略説明図である。FIG. 4 is another simplified explanatory diagram.
【図５】従来例を示す分解説明図である。FIG. 5 is an exploded explanatory view showing a conventional example.
【図６】従来例の要部断面図である。FIG. 6 is a sectional view of a main part of a conventional example.
【図７】従来例の要部拡大断面図である。FIG. 7 is an enlarged sectional view of a main part of a conventional example.
１ ジョイント本体 ２ 挿入部 ６ シール用凸条部 ７ センタリング用凸条部 10 モールド弾性材 11 凹周溝 Ｊ ジョイント 1 joint body 2 Insert 6 Convex strip for sealing 7 Centering ridge 10 Mold elastic material 11 concave groove J joint
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大堀 篤 和歌山県有田市箕島663番地 三菱電線工 業株式会社箕島製作所内 (72)発明者 川東 正記 和歌山県有田市箕島663番地 三菱電線工 業株式会社箕島製作所内 (72)発明者 関 均 茨城県稲敷郡阿見町中央八丁目３番２号 三菱化学産資株式会社商品研究所内 Ｆターム(参考） 3H015 BA01 BA04 BB02 BC02 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Atsushi Ohori 663 Minoshima, Arita-shi, Wakayama Mitsubishi Electric Works Minoshima Works Co., Ltd. (72) Inventor Masato Kawato 663 Minoshima, Arita-shi, Wakayama Mitsubishi Electric Works Minoshima Works Co., Ltd. (72) Inventor Seki 3-8 Chuo 8-chome, Ami Town, Inashiki District, Ibaraki Prefecture Inside the Product Research Center, Mitsubishi Chemical F-term (reference) 3H015 BA01 BA04 BB02 BC02
Claims (6)
するジョイント本体の該挿入部に、シール用凸条部を有
するモールド弾性材を外嵌させたことを特徴とする管継
手構造。1. A pipe joint structure characterized in that a mold elastic material having a sealing projection is externally fitted to the insertion portion of a joint body having an insertion portion to be inserted into a hole of a mating member.
するジョイント本体の該挿入部に、シール用凸条部、及
び、該シール用凸条部よりも小径であって上記孔部へ挿
入圧接状態でのつぶし代が小さいセンタリング用凸条部
を、一体成形して成るモールド弾性材を、外嵌させたこ
とを特徴とする管継手構造。2. A sealing projection on the insertion portion of the joint body having an insertion portion to be inserted into the hole of the mating member, and to the hole having a diameter smaller than that of the sealing projection. A pipe joint structure characterized in that a mold elastic material formed by integrally molding a ridge for centering with a small crushing margin in a state of insertion pressure contact is externally fitted.
モールド弾性材を一体に外嵌形成した請求項１又は２記
載の管継手構造。3. The pipe joint structure according to claim 1, wherein a mold elastic material is integrally fitted and formed on the joint body by molding.
ル用凸条部を軸心方向の中間部に、センタリング用凸条
部を、軸心方向の先端部と基端部に、夫々、配設した請
求項２又は３記載の管継手構造。4. The molded elastic material is a short tubular shape, and the sealing ridges are located at an intermediate portion in the axial direction, and the centering ridges are provided at a distal end portion and a base end portion in the axial direction, respectively. The pipe joint structure according to claim 2 or 3, wherein the pipe joint structure is provided.
ル用凸条部を軸心方向基端部に、センタリング用凸条部
を軸心方向中間部及び先端部に、夫々、配設した請求項
２又は３記載の管継手構造。5. The molded elastic material is a short cylinder, and the sealing ridges are provided at the axially proximal end portion, and the centering ridges are provided at the axially intermediate portion and the distal end portion, respectively. The pipe joint structure according to claim 2 or 3.
弾性材の平均肉厚寸法よりも小さな深さ寸法の凹周溝を
形成して、外嵌されたモールド弾性材の脱落防止溝とし
た請求項１，２，３，４又は５記載の管継手構造。6. A groove for preventing the mold elastic material fitted outside is formed by forming a concave circumferential groove having a depth dimension smaller than the average thickness dimension of the mold elastic material in the insertion portion of the joint body. The pipe joint structure according to Item 1, 2, 3, 4 or 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001216239A JP4716610B2 (en) | 2001-07-17 | 2001-07-17 | Pipe joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001216239A JP4716610B2 (en) | 2001-07-17 | 2001-07-17 | Pipe joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003028356A true JP2003028356A (en) | 2003-01-29 |
| JP4716610B2 JP4716610B2 (en) | 2011-07-06 |
Family
ID=19050742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001216239A Expired - Lifetime JP4716610B2 (en) | 2001-07-17 | 2001-07-17 | Pipe joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4716610B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007078089A (en) * | 2005-09-14 | 2007-03-29 | Yokohama Rubber Co Ltd:The | Fitting for pressure pipe |
| JP2008286260A (en) * | 2007-05-16 | 2008-11-27 | Higashio Mech Co Ltd | Pipe joint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381485A (en) * | 1989-08-22 | 1991-04-05 | Sanyo Electric Co Ltd | Switching controller for automatic door |
| JPH09229284A (en) * | 1996-02-27 | 1997-09-05 | Kunimori Kagaku:Kk | Pipe joint |
| JPH10339389A (en) * | 1997-06-09 | 1998-12-22 | Kubota Corp | Seal material for propulsion pipe and connecting structure of propulsion pipe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4712512U (en) * | 1971-03-12 | 1972-10-14 | ||
| JP2525352Y2 (en) * | 1989-12-11 | 1997-02-12 | 積水化学工業株式会社 | Seal rings for pipe fittings |
-
2001
- 2001-07-17 JP JP2001216239A patent/JP4716610B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0381485A (en) * | 1989-08-22 | 1991-04-05 | Sanyo Electric Co Ltd | Switching controller for automatic door |
| JPH09229284A (en) * | 1996-02-27 | 1997-09-05 | Kunimori Kagaku:Kk | Pipe joint |
| JPH10339389A (en) * | 1997-06-09 | 1998-12-22 | Kubota Corp | Seal material for propulsion pipe and connecting structure of propulsion pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007078089A (en) * | 2005-09-14 | 2007-03-29 | Yokohama Rubber Co Ltd:The | Fitting for pressure pipe |
| JP2008286260A (en) * | 2007-05-16 | 2008-11-27 | Higashio Mech Co Ltd | Pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4716610B2 (en) | 2011-07-06 |
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