JPH10169860A - Pipe detachment preventive member - Google Patents
Pipe detachment preventive memberInfo
- Publication number
- JPH10169860A JPH10169860A JP10336197A JP10336197A JPH10169860A JP H10169860 A JPH10169860 A JP H10169860A JP 10336197 A JP10336197 A JP 10336197A JP 10336197 A JP10336197 A JP 10336197A JP H10169860 A JPH10169860 A JP H10169860A
- Authority
- JP
- Japan
- Prior art keywords
- retaining member
- pipe
- peripheral surface
- blade
- port
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
- F16L37/0925—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector with rings which bite into the wall of the pipe
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Joints With Sleeves (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水道管等の配管に
際して、樹脂管同士や、樹脂管と樹脂管継手間を、挿口
を受口内に挿入する所謂挿込み式の接続を行った場合
に、接続部分の受口から挿口が抜け出さないようにする
ために、受口内に装着される管抜止め部材に関するもの
である。BACKGROUND OF THE INVENTION The present invention relates to a so-called plug-in type connection in which a plug is inserted into a receptacle between resin pipes or between a resin pipe and a resin pipe joint when piping such as a water pipe. In addition, the present invention relates to a pipe retaining member that is mounted in a receptacle so as to prevent the insertion hole from coming out of a receptacle of a connection portion.
【０００２】[0002]
【従来の技術】水道管等の配管に使用される管継手とし
て、近時、挿口を受口内に挿入するだけで管を接続し得
る管継手が開発されている。このような管継手には、通
常、挿口が挿入される受口内に管を抜け止めする円環状
の抜止め具が装着されて使用される。2. Description of the Related Art Recently, as a pipe joint used for a pipe such as a water pipe, a pipe joint capable of connecting a pipe simply by inserting an insertion port into a receptacle has been developed. Usually, such a pipe joint is used by attaching an annular stopper for retaining the pipe in a receptacle into which the insertion port is inserted.
【０００３】例えば、実開昭６１─１３０８７号公報に
は、鋳鉄製の受口の内面テーパ面と鋳鉄製の挿口との間
に、ステンレス製のリングを設けた離脱防止管継手が開
示されている。For example, Japanese Unexamined Utility Model Publication No. 61-13087 discloses a detachable pipe joint in which a stainless steel ring is provided between an inner tapered surface of a cast iron receiving port and a cast iron insertion opening. ing.
【０００４】そのリングは、周方向ひとつ割りとされ
て、縮径及び拡径可能になっている。又、リング外周面
には、軸心方向に二つのテーパー面が、その境界部が外
方へ突出するように連設されている。リングの両端部内
周面には、それぞれ掛止刃が配設されている。The ring is divided in the circumferential direction so that the diameter can be reduced and expanded. Further, two tapered surfaces are continuously provided on the outer peripheral surface of the ring in the axial direction such that a boundary portion protrudes outward. Locking blades are respectively disposed on the inner peripheral surfaces of both ends of the ring.
【０００５】このような離脱防止管継手では、受口内に
設けたリング内に挿口が挿入されると、リングの内奥側
の外周テーパー面が受口内周のテーパー面に当接した状
態になり、両掛止刃は挿口外周面に係止されずに、挿口
が円滑にリング内に挿入される。[0005] In such a separation-preventing pipe joint, when the insertion hole is inserted into the ring provided in the receiving port, the outer tapered surface on the inner side of the ring comes into contact with the tapered surface on the inner peripheral surface of the receiving port. In other words, the locking blades are not locked to the outer peripheral surface of the insertion port, and the insertion port is smoothly inserted into the ring.
【０００６】挿口がリング内に挿入された状態で、挿口
が受口から抜け出る方向に移動すると、挿口の移動に伴
い、リング外周面における受口開口部側のテーパー面
が、受口内周面に当接すべくリング外周面の境界部を中
心に回動して、リング内周面の受口内奥側端部に設けら
れた掛止刃が挿口外周面に係止し、挿口が受口から抜止
めされる。[0006] When the insertion hole is moved in the direction in which the insertion hole comes out of the receiving port with the insertion port inserted into the ring, the tapered surface on the side of the receiving port opening on the outer peripheral surface of the ring accompanies the movement of the insertion port. Rotating around the boundary of the outer peripheral surface of the ring to abut against the peripheral surface, the retaining blade provided at the inner end of the inner peripheral surface of the ring on the inner side of the receptacle locks on the outer peripheral surface of the insertion opening, The mouth is stopped from the socket.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の離脱防止管継手では、リングがステンレス製
であって剛性が高いために、リングを切欠き部を利用し
て縮径させて受口内に装着する作業が煩雑であり、又、
樹脂製の受口内に装着した場合には、挿口が受口から抜
け出る方向に移動したとき、リングが縮径しにくく、受
口を拡径させて、挿口３１がリングを係止した状態で接
続部分から抜け出てしまう（図１１参照）という問題点
がある。一方、リングを全体が樹脂からなるものに変更
した場合には、掛止刃の挿口外周面への食い込み性が悪
く、安定した必要抜止め性能が得られない。However, since the ring is made of stainless steel and has high rigidity, the ring is reduced in diameter by utilizing the notch portion in the conventional fitting for preventing separation, and the inside of the receiving port is formed. The work to attach to is complicated,
When mounted in a resin socket, the ring is less likely to shrink when the slot moves out of the socket, expanding the socket and locking the ring with the socket 31. Then, there is a problem that the connection part gets out of the connection part (see FIG. 11). On the other hand, when the ring is entirely made of resin, the biting performance of the retaining blade into the outer peripheral surface of the insertion opening is poor, and a stable required retaining performance cannot be obtained.
【０００８】本発明は、上記のような従来の問題点を解
消し、受口内に容易に装着することができ、且つ、受口
内に挿入された挿口の十分な抜止め機能を果たす管抜止
め部材を提供することを目的としてなされたものであ
る。SUMMARY OF THE INVENTION The present invention solves the conventional problems as described above, and can be easily mounted in a receptacle, and has a sufficient function to prevent the insertion of the receptacle inserted in the receptacle from being performed. The purpose is to provide a stop member.
【０００９】[0009]
【課題を解決するための手段】請求項１記載の本発明
（以下、この発明のみを指す場合には本発明１という）
は、挿口が挿入される受口内に装着される管抜止め部材
であって、１つ割りとされた短筒状の樹脂製管抜止め部
材本体の内周面に、その軸心方向に沿って少なくとも１
個の金属製掛止刃を含む複数の掛止刃が並設されている
管抜止め部材である。Means for Solving the Problems The present invention described in claim 1 (hereinafter referred to as the present invention 1 when referring only to the present invention)
Is a pipe retaining member mounted in the receptacle into which the insertion port is inserted, and is provided on the inner peripheral surface of the split short tubular resin pipe retaining member main body in the axial direction thereof. At least one along
A pipe retaining member in which a plurality of hanging blades including a plurality of metal hanging blades are arranged in parallel.
【００１０】請求項２記載の本発明（以下、この発明の
みを指す場合には本発明２という）は、挿口が挿入され
る受口内に装着され、受口内に挿入された挿口が受口開
口部側へ移動したときに、受口内周面に受口開口部側に
なるにつれて次第に小径となるように周方向に沿って形
成されたテーパー面に押圧されて縮径され、上記挿口の
外周面に係止されて抜止めとして機能する管抜止め部材
であって、１つ割りとされた短筒状の樹脂製管抜止め部
材本体の内周面に、上記挿口の外周面に係止される少な
くとも１個の金属製掛止刃を含む複数の掛止刃が軸心方
向に沿って並設されている管抜止め部材である。The present invention described in claim 2 (hereinafter referred to as the present invention 2 when referring only to the present invention) is mounted in a receptacle into which a receptacle is inserted, and the receptacle inserted in the receptacle is received by the receptacle. When moved to the mouth opening side, the diameter is reduced by being pressed by a tapered surface formed along the circumferential direction so as to gradually decrease in diameter toward the mouth opening side on the inner peripheral surface of the mouth. A pipe retaining member that functions as a retaining stopper by being locked to the outer peripheral surface of the main body. The outer peripheral surface of the insertion opening is provided on the inner peripheral surface of the divided short tubular resin pipe retaining member body. A plurality of locking blades including at least one metal locking blade to be locked to the tube are provided in parallel with each other along the axial direction.
【００１１】請求項３記載の本発明（以下、この発明の
みを指す場合には本発明３という）は、上記金属製掛止
刃が基本的に板材を加工したものである本発明１又は本
発明２記載の管抜止め部材である。The present invention described in claim 3 (hereinafter referred to as the present invention 3 when referring only to the present invention) relates to the present invention 1 or the present invention in which the metal hanging blade is basically formed by processing a plate material. A pipe retaining member according to a second aspect of the present invention.
【００１２】請求項４記載の本発明（以下、この発明の
みを指す場合には本発明４という）は、上記受口内周面
のテーパー面に相対するテーパー面が上記樹脂製管抜止
め部材本体の外周面に周方向に沿って形成され、そのテ
ーパー面の軸心方向に対する傾斜角度が、受口開口部側
になるにつれて次第に小径となる１０°〜３０°とされ
ている本発明２又は本発明３記載の管抜止め部材であ
る。The present invention described in claim 4 (hereinafter referred to as the present invention 4 when referring only to the present invention) is characterized in that the tapered surface opposite to the tapered surface of the inner peripheral surface of the receiving port is the resin pipe retaining member main body. The present invention 2 or the present invention, in which the taper surface is formed along the circumferential direction on the outer peripheral surface thereof, and the inclination angle of the tapered surface with respect to the axial direction is 10 ° to 30 °, the diameter of which gradually decreases toward the receiving opening side. A pipe retaining member according to a third aspect of the present invention.
【００１３】本発明において、挿口及び受口を形成する
材料としては、例えば、ポリエチレンやポリプロピレン
等のポリオレフィン系樹脂、ポリアセタール、硬質ポリ
塩化ビニル、ポリアミド樹脂等が挙げられる。In the present invention, examples of the material for forming the insertion opening and the receiving opening include polyolefin resins such as polyethylene and polypropylene, polyacetal, rigid polyvinyl chloride, and polyamide resin.
【００１４】本発明において、管抜止め部材の樹脂製管
抜止め部材本体を形成する樹脂の種類としては、例え
ば、上記の挿口及び受口を形成するのと同様の樹脂が好
適に使用されるが、異種の樹脂が使用されてもよい。管
抜止め部材の金属製掛止刃を形成する金属材料として
は、例えば、銅、ステンレス、鋼、黄銅、銅金、真鍮等
が挙げられる。In the present invention, as the kind of resin forming the resin tube retaining member main body of the tube retaining member, for example, the same resin as that forming the above-mentioned insertion opening and receiving opening is preferably used. However, different kinds of resins may be used. Examples of the metal material forming the metal retaining blade of the pipe retaining member include copper, stainless steel, steel, brass, copper gold, and brass.
【００１５】本発明１，２においては、短筒状の管抜止
め部材は、樹脂製管抜止め部材本体の内周面に、少なく
とも１個の金属製掛止刃を含む複数の掛止刃が軸心方向
に沿って並設されている必要がある。掛止刃の数は２個
以上その軸心方向に沿って並設されておればよいが、そ
の具体的な個数は、挿口や受口を形成する材料の種類や
サイズ等により適宜定められる。図１３に示すように、
掛止刃１２′がその軸心方向に沿って１個設けられてい
るだけでは、その１個の掛止刃１２′に引抜力が集中す
るので、挿口３１の外周面が削られるようにして挿口３
１が接続部分から抜け出してしまい、抜止めとして十分
に機能しない。In the first and second aspects of the present invention, the short tube-shaped pipe retaining member has a plurality of retaining blades including at least one metal retaining blade on the inner peripheral surface of the resin pipe retaining member main body. Must be juxtaposed along the axial direction. The number of the latching blades may be two or more in parallel along the axial direction, but the specific number is appropriately determined depending on the type and size of the material forming the insertion opening and the receiving opening. . As shown in FIG.
If only one hook blade 12 'is provided along the axial direction, the pulling force concentrates on the one hook blade 12', so that the outer peripheral surface of the insertion opening 31 is cut off. Insert 3
1 comes out of the connection part, and does not function sufficiently as a stopper.
【００１６】本発明４において、樹脂製管抜止め部材本
体の外周面に形成されるテーパー面の軸心方向に対する
傾斜角度は、受口開口部側になるにつれて次第に小径と
なる１０°〜３０°とされる必要がある。傾斜角度が１
０°未満であると、受口のテーパー面を押し広げるよう
にして、挿口がその外周面に管抜止め部材を係止したま
ま接続部分から抜け出してしまうおそれがあり（図１１
参照）、傾斜角度が３０°を超えると、受口内周面に形
成さたれたテーパー面により金属製掛止刃を挿口の外周
面に係止させるための押圧力が小さいので、挿口の外周
面への金属製掛止刃の食い込みが不充分となり、挿口の
外周面と管抜止め部材の金属製掛止刃との間が滑るよう
にして挿口が接続部分から抜け出してしまうおそれがあ
る。In the fourth aspect of the present invention, the inclination angle of the tapered surface formed on the outer peripheral surface of the resin pipe retaining member main body with respect to the axial center direction becomes 10 ° to 30 ° which gradually becomes smaller as it becomes closer to the receiving opening. Need to be done. The tilt angle is 1
If the angle is less than 0 °, the taper surface of the receiving port may be pushed out so that the insertion port may come out of the connection portion while retaining the pipe retaining member on its outer peripheral surface (FIG. 11).
When the angle of inclination exceeds 30 °, the pressing force for locking the metal hooking blade to the outer peripheral surface of the insertion port is small due to the tapered surface formed on the inner peripheral surface of the receiving port. Engagement of the metal hooking blade into the outer peripheral surface becomes insufficient, and the insertion hole may slip out of the connection portion by slipping between the outer peripheral surface of the insertion hole and the metal hooking blade of the pipe retaining member. There is.
【００１７】[0017]
【作用】本発明１，２の管抜止め部材は、管抜止め部材
本体が樹脂製であるために、柔軟性があり、受口の管抜
止め部材用凹部内に装着する際に、１つ割り部分の両端
をずらすようにして容易に縮径して装着することができ
る。又、掛止刃の少なくとも１個が金属製であるため
に、挿口外周面への食い込み性が良く、抜止め効果が大
きい。又、掛止刃がその軸心方向に沿って並設されてい
て、金属製掛止刃にかかる管引抜力が分散するために、
金属製掛止刃が挿口の外周面を削るように滑るようなこ
とがなく、挿口の接続部分からの抜止め効果が大きい。The pipe retaining members of the present inventions 1 and 2 are flexible because the main body of the tube retaining member is made of a resin. By shifting both ends of the split part, the diameter can be easily reduced and mounted. In addition, since at least one of the latch blades is made of metal, it has good bite into the outer peripheral surface of the insertion hole, and has a large retaining effect. Also, the hanging blades are arranged side by side along the axial direction, so that the pipe pulling force applied to the metal hanging blade is dispersed.
The metal hanging blade does not slip so as to scrape the outer peripheral surface of the insertion hole, and the effect of preventing the insertion from the connection portion of the insertion hole is large.
【００１８】本発明３の管抜止め部材は、１個の金属製
掛止刃が１枚の板材を加工したものからなることによ
り、金属製掛止刃を挿口の外周面に係止させるための押
圧力が大きく、金属製掛止刃を挿口の外周面に十分に食
い込ませることができるために挿口の接続部分からの抜
止め効果が大きい。In the tube retaining member according to the third aspect of the present invention, the metal retaining blade is formed by processing a single plate material, so that the metal retaining blade is locked to the outer peripheral surface of the insertion opening. Pressing force is large, and the metal hanging blade can be sufficiently digged into the outer peripheral surface of the insertion port, so that the effect of preventing the metal insertion blade from being removed from the connection portion of the insertion port is large.
【００１９】本発明４の管抜止め部材は、上記受口内周
面に形成されたテーパー面に相対するテーパー面が樹脂
製管抜止め部材本体の外周面に形成され、そのテーパー
面の軸心方向に対する傾斜角度が、受口開口部側になる
につれて次第に小径となるような１０°〜３０°とされ
ていることにより、受口内周面に形成されたテーパー面
による金属製掛止刃を挿口の外周面に係止させるための
押圧力が大きく、金属製掛止刃を挿口の外周面に十分に
食い込ませることができるために挿口の接続部分からの
抜止め効果が大きい。According to a fourth aspect of the present invention, there is provided a pipe retaining member, wherein a tapered surface opposite to the tapered surface formed on the inner peripheral surface of the receiving port is formed on the outer peripheral surface of the resin pipe retaining member main body, and the axial center of the tapered surface is formed. The inclination angle with respect to the direction is set to 10 ° to 30 ° so that the diameter becomes gradually smaller toward the receiving opening side, so that the metal hooking blade formed by the tapered surface formed on the inner peripheral surface of the receiving opening is inserted. The pressing force for locking to the outer peripheral surface of the mouth is large, and the metal retaining blade can be sufficiently digged into the outer peripheral surface of the insertion opening, so that the effect of preventing the insertion opening from the connection portion is large.
【００２０】[0020]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。図１は本発明の管抜止め部材の一
例を示す断面部であって、図２に示す挿込み式の樹脂管
継手に使用される。樹脂管継手２は、接続すべき管３の
挿口３１が挿入される円筒状の受口２１を有している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of a pipe retaining member according to the present invention, which is used for a plug-in type resin pipe joint shown in FIG. The resin pipe joint 2 has a cylindrical receiving port 21 into which the insertion port 31 of the pipe 3 to be connected is inserted.
【００２１】受口２１は、一端に挿口が挿入される開口
部２１１を有し、開口部２１１近傍の内周面には、環状
のシール部材用凹溝２１２が周方向に沿って設けられて
いる。シール部材用凹溝２１２内には、例えば、ゴム製
のシール部材４が密接状態で嵌合されており、受口２１
内に接続すべき樹脂管３の挿口３１が挿入されるとシー
ル部材４が挿口３１外周面に液密に密着されるようにな
っている。The receiving port 21 has an opening 211 into which an insertion hole is inserted at one end, and an annular groove 212 for a sealing member is provided along the circumferential direction on the inner peripheral surface near the opening 211. ing. For example, a rubber sealing member 4 is fitted in the sealing member concave groove 212 in a close contact state.
When the insertion port 31 of the resin pipe 3 to be connected to the inside is inserted, the sealing member 4 is brought into close contact with the outer peripheral surface of the insertion port 31 in a liquid-tight manner.
【００２２】受口２１におけるシール部材用凹溝２１２
よりも奥部側の内周面には、管抜止め部材用凹部２１３
が設けられている。管抜止め部材用凹部２１３の受口開
口部側の内周面は、受口開口部側になるにつれて次第に
小径となるようなテーパー面２１３ａとされており、奥
部側は円筒面とされている。管抜止め部材用凹部２１３
の奥端には突当り面が形成されている。The groove 212 for the seal member in the receiving port 21
A concave portion 213 for a pipe retaining member is provided
Is provided. The inner peripheral surface of the concave portion 213 for the tube retaining member on the side of the receiving opening is a tapered surface 213a whose diameter becomes gradually smaller toward the receiving opening, and the inner surface is a cylindrical surface. I have. Tube retaining member recess 213
The rear end has a butting surface.
【００２３】管抜止め部材用凹部２１３内には、本発明
の管抜止め部材１が受口２１と略同心状態で装着されて
いる。管抜止め部材１は、１つ割りの短筒状の樹脂製管
抜止め部材本体１１の内周面に、挿口の外周面に係止さ
れる複数の金属製掛止刃１２ａ〜１２ｅが軸心方向に沿
って並設するようにして設けられている。各金属製掛止
刃１２ａ〜１２ｅは、受口２１内奥側の内方へ向かって
鋸刃状に突出されている。The tube retaining member 1 of the present invention is mounted in the concave portion 213 for the tube retaining member so as to be substantially concentric with the receiving port 21. The pipe retaining member 1 is provided with a plurality of metal retaining blades 12a to 12e, which are locked on the outer peripheral surface of the insertion opening, on the inner peripheral surface of a single short cylindrical resin pipe retaining member main body 11. It is provided so as to be juxtaposed along the axial direction. Each of the metal hanging blades 12a to 12e is protruded in a saw blade shape toward the inside of the inner side of the receiving port 21.
【００２４】この管抜止め部材１は、一般的に、予め掛
止刃加工を内面側に施した円環状金属製リングをインサ
ート部材として、樹脂を射出成形して一体化させること
によって得ることができる。金属製掛止刃１２ａ〜１２
ｅが管抜止め部材本体１１から外れないようにするため
に、射出成形前のインサート部材の樹脂接合面に予めプ
ライマー処理を適宜行った後に合成樹脂と一体化した
り、金属製掛止刃１２ａ〜１２ｅの両端部が樹脂中に埋
設されて嵌合状態となるように適宜工夫するのが好まし
い。The pipe retaining member 1 can be generally obtained by injection-molding a resin and integrating it with an annular metal ring, which has been previously subjected to a locking blade process on the inner surface side, as an insert member. it can. Metal hanging blades 12a-12
In order to prevent e from being detached from the pipe retaining member main body 11, the resin joining surface of the insert member before injection molding is appropriately subjected to a primer treatment before being integrated with the synthetic resin, or the metal retaining blades 12a to 12a. It is preferable to appropriately devise both ends of 12e so as to be buried in the resin to be in a fitted state.
【００２５】樹脂製抜止め部材本体１１における、受口
２１の開口部２１１側の端部外周面には、受口内周面に
形成されたテーパー面２１３ａに相対するテーパー面１
１１が周方向に沿って形成され、そのテーパー面１１１
の軸心方向に対する傾斜角度θは、受口開口部側になる
につれて次第に小径となるような１０°〜３０°とされ
ている。The outer peripheral surface of the end of the resin retaining member body 11 on the opening 211 side of the receiving port 21 has a tapered surface 1 opposed to a tapered surface 213a formed on the inner peripheral surface of the receiving port.
11 are formed along the circumferential direction, and the tapered surface 111
Is set to 10 ° to 30 ° so that the diameter becomes gradually smaller toward the receiving opening side.
【００２６】以下、上記の管抜止め部材の使用状態を図
３及び図４を参照して説明する。まず、図３に示すよう
に、環状のシール部材用凹溝２１２内にゴム製のシール
部材４が液密状態で嵌合され、管抜止め部材用凹部２１
３内に管抜止め部材１が金属製掛止刃１２ａ〜１２ｅを
受口２１内奥側の内方へ向かって鋸刃状に突出するよう
にして装着された状態の樹脂管継手２の受口２１内に、
接続すべき樹脂管３の挿口３１をシール部材４及び管抜
止め部材１を拡径させつつその内部に挿通させるように
して受口の奥端部まで挿入していく。Hereinafter, the use state of the above-mentioned tube retaining member will be described with reference to FIGS. First, as shown in FIG. 3, a rubber sealing member 4 is fitted in a ring-shaped sealing member concave groove 212 in a liquid-tight state, and the pipe retaining member concave portion 21 is formed.
The resin pipe joint 2 is mounted in such a manner that the pipe retaining member 1 is mounted inside the receiving pipe 21 so that the metal retaining blades 12a to 12e protrude inward in the receiving port 21 inwardly. In the mouth 21,
The insertion opening 31 of the resin pipe 3 to be connected is inserted into the inside of the receiving port so that the sealing member 4 and the pipe retaining member 1 are inserted into the inside while increasing the diameter.
【００２７】このとき、管抜止め部材１は１箇所が１つ
割りとされているので、金属製掛止刃１２ａ〜１２ｅが
受口２１内奥側の内方へ向かって鋸刃状に突出していて
も、その奥端面を管抜止め部材用凹部２１３の奥端部の
突当り面に当接させるようにして容易に拡径させつつ、
樹脂管３の挿口３１をその内部に挿通させることができ
る。そして、樹脂管３の挿口３１の外周面に シール部
材４が液密に密着されるとともに、管抜止め部材１が当
接された状態となる。At this time, since the pipe retaining member 1 is divided into one portion, the metal retaining blades 12a to 12e protrude inward in the inner side of the receiving port 21 in a saw blade shape. Even though the diameter is easily enlarged while making the rear end surface thereof come into contact with the abutting surface of the rear end portion of the tube retaining member concave portion 213,
The insertion port 31 of the resin tube 3 can be inserted into the inside. Then, the sealing member 4 is brought into close contact with the outer peripheral surface of the insertion opening 31 of the resin tube 3 in a liquid-tight manner, and the tube retaining member 1 is brought into contact with the sealing member 4.
【００２８】次に、図４に示すように、管継手２の受口
２１内に挿入された樹脂管３の挿口３１が受口開口部側
へ移動したときに、管抜止め部材１は樹脂管３の挿口３
１の外周面に当接された状態にて僅かに移動するが、外
周面に形成されたテーパー面１１１が、管抜止め部材用
凹部２１３のテーパー面２１３ａに当接する。そして、
樹脂管３の挿口３１の更なる移動により、管抜止め部材
１はテーパー面３１１がテーパー面２１３ａに押圧され
て管抜止め部材１が縮径される。Next, as shown in FIG. 4, when the insertion port 31 of the resin pipe 3 inserted into the reception port 21 of the pipe joint 2 moves to the reception port opening side, the pipe retaining member 1 is turned off. Insertion 3 of resin tube 3
Although it slightly moves in a state of contact with the outer peripheral surface of No. 1, the tapered surface 111 formed on the outer peripheral surface comes into contact with the tapered surface 213 a of the tube retaining member concave portion 213. And
Further movement of the insertion opening 31 of the resin tube 3 causes the tapered surface 311 of the tube stopper member 1 to be pressed by the tapered surface 213a, so that the diameter of the tube stopper member 1 is reduced.
【００２９】これにより、管抜止め部材１の掛止刃１２
ａ〜１２ｅを管３の挿口３１の外周面に食い込ませるよ
うに係止される。この際、管抜止め部材１のテーパー面
１１１が管継手２のテーパー面２１３ａと衝突している
ので、管３の挿口３１が受口開口部側へ移動する管引抜
力は、複数の金属製掛止刃１２ａ〜２ｅが管３の挿口３
１の外周面に食い込ませる力として均一に作用する。As a result, the retaining blade 12 of the pipe retaining member 1
a to 12e are engaged so as to bite into the outer peripheral surface of the insertion opening 31 of the tube 3. At this time, since the tapered surface 111 of the pipe retaining member 1 collides with the tapered surface 213a of the pipe joint 2, the pipe pulling force at which the insertion port 31 of the pipe 3 moves to the receiving port opening side is reduced by a plurality of metals. The hanging blades 12a to 2e made of the pipe 3
1 acts uniformly as a force to bite into the outer peripheral surface.
【００３０】図５は本発明の管抜止め部材の別の例を示
す断面部である。管抜止め部材５は、１つ割りの短筒状
の樹脂製管抜止め部材本体５１の内周面に、挿口の外周
面に係止される複数の金属製掛止刃５２ａ，５２ｂと樹
脂製掛止刃５２ｃ〜５２ｄが軸心方向に沿って並設する
ようにして設けられている。各掛止刃５２ａ〜５２ｅは
樹脂製管抜止め部材本体５１と一体化され、受口２１内
奥側の内方へ向かって鋸刃状に突出されている。FIG. 5 is a sectional view showing another example of the pipe retaining member of the present invention. The pipe retaining member 5 includes a plurality of metal retaining blades 52a and 52b which are engaged with the inner peripheral surface of a single short tubular resin pipe retaining member main body 51 and which are engaged with the outer peripheral surface of the insertion opening. The resin hanging blades 52c to 52d are provided so as to be arranged side by side along the axial direction. Each of the retaining blades 52a to 52e is integrated with the resin tube retaining member main body 51, and protrudes in a saw blade shape toward the inside of the inner side of the receiving port 21.
【００３１】この例のように、掛止刃の一部のみを金属
製とした場合には、金属製掛止刃を形成する金属材料と
してばね材を用いることができので、管抜止め部材を比
較的簡単に縮径状態となすことができるとともに、受口
内に装着する作業が容易であり、且つ、受口内に装着し
た後は所期の内径を有する拡径状態となすことができ、
これにより、受口内に挿口を挿入する再に挿口の先端が
掛止刃に引っ掛かるおそれがなくなり、又、金属部分を
減少した分だけコストが安くなる。尚、金属製掛止刃５
２ａ，５２ｂの刃先が、樹脂製掛止刃５２ｃ〜５２ｄの
刃先よりも１〜２ｍｍ程度内方に突出していると、挿口
の外周面に食い込み易いので好ましい。When only a part of the retaining blade is made of metal as in this example, a spring material can be used as a metal material for forming the metallic retaining blade. It is possible to relatively easily make the reduced diameter state, it is easy to install the inside of the receiving port, and after mounting in the receiving port, it is possible to make the expanded state having the intended inner diameter,
As a result, there is no risk that the tip of the insertion hole is caught by the retaining blade when the insertion hole is inserted into the receiving port, and the cost is reduced by reducing the number of metal parts. In addition, metal hanging blade 5
It is preferable that the cutting edges 2a and 52b protrude inward by about 1 to 2 mm from the cutting edges of the resin hanging blades 52c to 52d because they easily bite into the outer peripheral surface of the insertion opening.
【００３２】図６は本発明の管抜止め部材の別の例を示
す断面部である。管抜止め部材６は、１つ割りの短筒状
の樹脂製管抜止め部材本体６１の内周面に、挿口の外周
面に係止される１個の板状金属製掛止刃６２ａと複数の
樹脂製掛止刃６２ｂ〜６２ｅが軸心方向に沿って並設す
るようにして設けられている。各掛止刃６２ａ〜６２ｅ
は樹脂製管抜止め部材本体６１と一体化され、受口２１
内奥側の内方へ向かって鋸刃状に突出されている。FIG. 6 is a sectional view showing another example of the pipe retaining member of the present invention. The pipe retaining member 6 is a single plate-shaped metal retaining blade 62a that is locked to the inner peripheral surface of the split short tubular resin pipe retaining member main body 61 at the outer peripheral surface of the insertion opening. And a plurality of resin retaining blades 62b to 62e are provided side by side along the axial direction. Each hanging blade 62a-62e
Is integrated with the resin pipe retaining member main body 61,
It protrudes in the shape of a saw blade toward the inner side on the inner side.
【００３３】板状金属製掛止刃６２ａは、図７及び図８
に示すように、板材を加工したものであって、折り曲げ
加工や孔あけ加工等を施して、樹脂中での埋設強度を向
上したものである。尚、金属製掛止刃６２ａの刃先が、
樹脂製掛止刃６２ｂ〜６２ｅの刃先よりも１〜２ｍｍ程
度内方に突出していると、挿口の外周面に食い込み易い
ので好ましい。The plate-shaped metal hanging blade 62a is shown in FIGS.
As shown in Fig. 5, a plate material is processed, and a bending process, a drilling process, and the like are performed to improve the burying strength in a resin. In addition, the cutting edge of the metal hanging blade 62a is
It is preferable to protrude inward by about 1 to 2 mm from the cutting edge of the resin hanging blades 62b to 62e, because it easily bites into the outer peripheral surface of the insertion opening.
【００３４】[0034]
【実施例】以下、本発明の実施例を説明する。実施例１〜３ 樹脂管継手２及び樹脂管３として、図２に示すような構
造のポリエチレンからなるものを用いた。又、樹脂管３
としては、呼び径７５Ａ（外径８９ｍｍ、肉厚８．５ｍ
ｍ）のものを用いた。Embodiments of the present invention will be described below. Examples 1 to 3 As the resin pipe joint 2 and the resin pipe 3, those made of polyethylene having a structure as shown in FIG. 2 were used. Also, resin tube 3
The nominal diameter is 75A (outer diameter 89mm, wall thickness 8.5m
m) was used.
【００３５】管抜止め部材１として、図１に示すような
構造であって、ポリアセタールからなる管抜止め部材本
体１１の内周面に、ステンレスからなる５個の金属製掛
止刃１２ａ〜１２ｅが軸心方向に沿って並設されるよう
にインサートされ、テーパー面１１１が表１に示す傾斜
角度（受口２１の内周面に形成されたテーパー面２１３
ａと同じ傾斜角度）とされたものを用いて、図３及び図
４を参照して説明したのと同様にして、樹脂管継手２の
受口２１内に樹脂管３の挿口３１を挿し込むようにして
接続した。The pipe retaining member 1 has a structure as shown in FIG. 1 and has five metal retaining blades 12a to 12e made of stainless steel on the inner peripheral surface of a pipe retaining member main body 11 made of polyacetal. Are inserted side by side along the axial direction, and the tapered surface 111 has an inclination angle shown in Table 1 (the tapered surface 213 formed on the inner peripheral surface of the receiving port 21).
3 and 4, the insertion port 31 of the resin pipe 3 is inserted into the reception port 21 of the resin pipe joint 2 in the same manner as described with reference to FIGS. And connected.
【００３６】実施例４〜６ 管抜止め部材として、図６に示すような構造であって、
ポリアセタールからなる樹脂製管抜止め部材本体６１の
内周面に、１個の板状金属製掛止刃６２ａと複数のポリ
アセタールからなる樹脂製掛止刃６２ｂ〜６２ｅが軸心
方向に沿って並設するようにして設けられているものを
用いたこと以外は、それぞれ、実施例１〜３と同様にし
て、樹脂管継手２の受口２１内に樹脂管３の挿口３１を
挿し込むようにして接続した。 Embodiments 4 to 6 As a pipe retaining member, the structure shown in FIG.
On the inner peripheral surface of the resin pipe retaining member main body 61 made of polyacetal, one plate-shaped metal hanging blade 62a and a plurality of resin hanging blades 62b to 62e made of polyacetal are arranged along the axial direction. Except for using the one provided so as to be installed, the insertion port 31 of the resin pipe 3 is inserted into the reception port 21 of the resin pipe joint 2 in the same manner as in Examples 1 to 3, respectively. Connected.
【００３７】比較例１〜３ 管抜止め部材として、図１に示す外形の同様のものであ
って、掛止刃を含めて全体がポリアセタールのみからな
るものを用いたこと以外は実施例１〜３と同様にして、
樹脂管継手２の受口２１内に樹脂管３の挿口３１を挿し
込むようにして接続した。COMPARATIVE EXAMPLES 1 to 3 Examples 1 to 3 were used as the pipe retaining members having the same outer shape as shown in FIG. 1 except that the entirety including the retaining blade was made of only polyacetal. In the same way as 3,
The connection was made such that the insertion port 31 of the resin pipe 3 was inserted into the reception port 21 of the resin pipe joint 2.
【００３８】実施例１〜６及び比較例１〜３の接続状態
のものを、図９に示すように引張試験機のチャックに固
定して、引張試験を行った。その結果を表１に示す。
尚、表１中で、「管伸び」とは、図１０に示すように、
接続部分が抜けることなく、管部分が伸びた状態をい
う。The connected state of Examples 1 to 6 and Comparative Examples 1 to 3 were fixed to a chuck of a tensile tester as shown in FIG. 9, and a tensile test was performed. Table 1 shows the results.
In Table 1, “tube elongation” means, as shown in FIG.
A state in which the tube portion is extended without the connection portion coming off.
【００３９】[0039]
【表１】 [Table 1]
【００４０】表１からも明らかの如く、実施例の場合は
いずれも十分な抜止め性能を有しているのに対して、比
較例の場合はいずれも抜止め性能が十分でない。As is evident from Table 1, all of the examples have sufficient retaining performance, whereas the comparative examples have insufficient retaining performance.
【００４１】[0041]
【発明の効果】本発明１，２の管抜止め部材は、上記の
如くされていることにより、受口の管抜止め部材用凹部
内に容易に装着することができ、且つ、接続した管の抜
止め効果が大きい。As described above, the pipe retaining members of the present inventions 1 and 2 can be easily mounted in the recesses for the pipe retaining members at the receiving ports, and the connected pipes can be easily connected. The effect of retaining is large.
【００４２】本発明３，４の管抜止め部材は、上記の如
くされていることにより、更に、掛止刃が挿口の外周面
によく食い込み、接続した管の抜止め効果が大きい。With the pipe retaining members according to the present inventions 3 and 4, the retaining blades are more likely to bite into the outer peripheral surface of the insertion opening as described above, so that the effect of retaining the connected tubes is great.
【図１】本発明の管抜止め部材の一例の説明図であり、
（ａ）は正面図、（ｂ）は（ａ）におけるＡ−Ａ線に沿
う断面図である。FIG. 1 is an explanatory view of an example of a pipe retaining member according to the present invention;
(A) is a front view, (b) is sectional drawing which follows the AA line in (a).
【図２】図１に示す管抜止め部材が管継手の受口に装着
された状態を示す一部断面図である。FIG. 2 is a partial cross-sectional view showing a state where the pipe retaining member shown in FIG. 1 is attached to a socket of a pipe joint.
【図３】図１に示す管抜止め部材の使用状態を説明する
一部断面図である。FIG. 3 is a partial cross-sectional view illustrating a use state of the pipe retaining member shown in FIG.
【図４】図１に示す管抜止め部材の使用状態を説明する
一部断面図である。FIG. 4 is a partial cross-sectional view illustrating a usage state of the pipe retaining member shown in FIG.
【図５】本発明の管抜止め部材の別の例の説明図であ
り、（ａ）は正面図、（ｂ）は（ａ）におけるＢ−Ｂ線
に沿う断面図である。5A and 5B are explanatory views of another example of the pipe retaining member of the present invention, wherein FIG. 5A is a front view, and FIG. 5B is a cross-sectional view taken along line BB in FIG.
【図６】本発明の管抜止め部材の更に別の例の説明図で
あり、（ａ）は正面図、（ｂ）は（ａ）におけるＣ−Ｃ
線に沿う断面図である。FIGS. 6A and 6B are explanatory views of still another example of the pipe retaining member of the present invention, wherein FIG. 6A is a front view, and FIG.
It is sectional drawing which follows a line.
【図７】図６に示す管抜止め部材における板状金属製掛
止刃の一例の説明図であり、（ａ）はその正面図、
（ｂ）はその側面図である。7A and 7B are explanatory views of an example of a plate-shaped metal retaining blade in the tube retaining member shown in FIG. 6, wherein FIG.
(B) is a side view thereof.
【図８】図６に示す管抜止め部材における板状金属製掛
止刃の他の例の説明図であり、（ａ）はその正面図、
（ｂ）はその側面図である。8A and 8B are explanatory views of another example of a plate-shaped metal retaining blade in the pipe retaining member shown in FIG. 6, wherein FIG.
(B) is a side view thereof.
【図９】引張試験方法を説明する正面図である。FIG. 9 is a front view illustrating a tensile test method.
【図１０】表１中の「管伸び」の状態を説明する正面図
である。10 is a front view illustrating a state of “tube elongation” in Table 1. FIG.
【図１１】挿口がリングを装着したまま接続部分から抜
けた状態を説明する一部断面図である。FIG. 11 is a partial cross-sectional view illustrating a state in which the insertion hole is detached from the connection portion while the ring is mounted.
【図１２】挿口外周面が削られるようにして接続部分か
ら管が抜けた状態を説明する一部断面図である。FIG. 12 is a partial cross-sectional view illustrating a state in which the pipe is pulled out of the connection portion so that the outer peripheral surface of the insertion opening is shaved.
１，５，６ 管抜止め部材 ２ 樹脂管 ３ 樹脂管継手 １１ 樹脂製管抜止め部材 １２ａ〜１２ｅ，５２ａ，５２ｂ，６２ａ 金属製掛止
刃 １１１，２１３ａ テーパー面 ２１ 受口 ３１ 挿口 ５２ｃ〜５２ｅ，６２ｂ〜６２ｅ 樹脂製掛止刃 ２１３ 管抜止め部材用凹部1, 5, 6 Pipe retaining member 2 Resin pipe 3 Resin pipe joint 11 Resin pipe retaining member 12a to 12e, 52a, 52b, 62a Metal retaining blade 111, 213a Tapered surface 21 Receiving port 31 Inserting port 52c- 52e, 62b to 62e Resin retaining blades 213 Tube retaining member recess
Claims (4)
抜止め部材であって、１つ割りとされた短筒状の樹脂製
管抜止め部材本体の内周面に、その軸心方向に沿って少
なくとも１個の金属製掛止刃を含む複数の掛止刃が並設
されていることを特徴とする管抜止め部材。1. A pipe retaining member mounted in a receptacle into which an insertion port is inserted, wherein a shaft is formed on an inner peripheral surface of a split short tubular resin pipe retaining member main body. A pipe retaining member, wherein a plurality of retaining blades including at least one metallic retaining blade are arranged side by side along a center direction.
口内に挿入された挿口が受口開口部側へ移動したとき
に、受口内周面に受口開口部側になるにつれて次第に小
径となるように周方向に沿って形成されたテーパー面に
押圧されて縮径され、上記挿口の外周面に係止されて抜
止めとして機能する管抜止め部材であって、１つ割りと
された短筒状の樹脂製管抜止め部材本体の内周面に、上
記挿口の外周面に係止される少なくとも１個の金属製掛
止刃を含む複数の掛止刃が軸心方向に沿って並設されて
いることを特徴とする管抜止め部材。2. When the insertion port is mounted in the receptacle into which the insertion port is inserted and the insertion port inserted into the reception port moves toward the reception port opening side, the insertion port becomes closer to the reception port inner peripheral surface toward the reception port opening section. A pipe stopper member which is pressed against a tapered surface formed along the circumferential direction so as to gradually become smaller in diameter, is reduced in diameter, and is locked to the outer peripheral surface of the insertion opening to function as a stopper; A plurality of latching blades including at least one metal latching blade that is locked to the outer peripheral surface of the insertion opening are formed on the inner peripheral surface of the split short tubular resin pipe retaining member main body. A pipe retaining member, which is arranged side by side along a center direction.
したものであることを特徴とする請求項１又は請求項２
記載の管抜止め部材。3. The metal latching blade according to claim 1, wherein the metal cutting blade is basically a plate material processed.
A pipe retaining member according to any one of the preceding claims.
テーパー面が上記樹脂製管抜止め部材本体の外周面に周
方向に沿って形成され、そのテーパー面の軸心方向に対
する傾斜角度が、受口開口部側になるにつれて次第に小
径となる１０°〜３０°とされていることを特徴とする
請求項２又は請求項３記載の管抜止め部材。4. A tapered surface facing the tapered surface of the inner peripheral surface of the receiving port is formed on the outer peripheral surface of the resin pipe retaining member main body along a circumferential direction, and an inclination angle of the tapered surface with respect to the axial direction is set. The pipe retaining member according to claim 2 or 3, wherein the diameter is 10 ° to 30 °, the diameter of which gradually decreases toward the receiving opening side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10336197A JPH10169860A (en) | 1996-10-08 | 1997-04-21 | Pipe detachment preventive member |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26739496 | 1996-10-08 | ||
| JP8-267394 | 1996-10-08 | ||
| JP10336197A JPH10169860A (en) | 1996-10-08 | 1997-04-21 | Pipe detachment preventive member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10169860A true JPH10169860A (en) | 1998-06-26 |
Family
ID=26444010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10336197A Pending JPH10169860A (en) | 1996-10-08 | 1997-04-21 | Pipe detachment preventive member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10169860A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003010461A1 (en) * | 2001-07-25 | 2003-02-06 | Philmac Pty Ltd | Coupling or transition fitting for the connection of metal or plastic pipes |
| AU2002317044B2 (en) * | 2001-07-25 | 2006-12-07 | Philmac Pty Ltd | Coupling or transition fitting for the connection of metal or plastic pipes |
| JP2008164090A (en) * | 2006-12-28 | 2008-07-17 | Taifurekkusu Kk | Joint for resin pipe |
| JP2010533824A (en) * | 2007-07-20 | 2010-10-28 | エー．ハブレ アルマトゥーレンベルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Pipe fitting with armature housing |
| CN102272506A (en) * | 2009-01-12 | 2011-12-07 | 克劳泽工业发展有限公司 | Pipe grip ring |
| JP2012215280A (en) * | 2011-03-31 | 2012-11-08 | Kitz Corp | Lock ring for joint and joint using the same |
| JP2015031400A (en) * | 2013-08-06 | 2015-02-16 | コ ユン−ジンＫＯ， Ｅｕｎ−Ｊｉｎ | Single inserting operation type pipe connector device with easy component assembly |
-
1997
- 1997-04-21 JP JP10336197A patent/JPH10169860A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003010461A1 (en) * | 2001-07-25 | 2003-02-06 | Philmac Pty Ltd | Coupling or transition fitting for the connection of metal or plastic pipes |
| AU2002317044B2 (en) * | 2001-07-25 | 2006-12-07 | Philmac Pty Ltd | Coupling or transition fitting for the connection of metal or plastic pipes |
| US7255373B2 (en) | 2001-07-25 | 2007-08-14 | Philmac Pty Ltd | Coupling or transition fitting for the connection of metal or plastic pipes |
| JP2008164090A (en) * | 2006-12-28 | 2008-07-17 | Taifurekkusu Kk | Joint for resin pipe |
| JP2010533824A (en) * | 2007-07-20 | 2010-10-28 | エー．ハブレ アルマトゥーレンベルケ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Pipe fitting with armature housing |
| CN102272506A (en) * | 2009-01-12 | 2011-12-07 | 克劳泽工业发展有限公司 | Pipe grip ring |
| JP2012515304A (en) * | 2009-01-12 | 2012-07-05 | クラウス インダストリーズ デベロップメント エルティーディー | Pipe grip ring |
| JP2012215280A (en) * | 2011-03-31 | 2012-11-08 | Kitz Corp | Lock ring for joint and joint using the same |
| JP2015222123A (en) * | 2011-03-31 | 2015-12-10 | 株式会社キッツ | Lock ring for joint and joint using the same |
| JP2015031400A (en) * | 2013-08-06 | 2015-02-16 | コ ユン−ジンＫＯ， Ｅｕｎ−Ｊｉｎ | Single inserting operation type pipe connector device with easy component assembly |
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