JPH08135885A - Erosion-proof sleeve - Google Patents
Erosion-proof sleeveInfo
- Publication number
- JPH08135885A JPH08135885A JP27507894A JP27507894A JPH08135885A JP H08135885 A JPH08135885 A JP H08135885A JP 27507894 A JP27507894 A JP 27507894A JP 27507894 A JP27507894 A JP 27507894A JP H08135885 A JPH08135885 A JP H08135885A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- resin
- pipe
- hole
- sleeve body
- 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
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
- F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水道本管等に用いられ
る内面樹脂被覆金属管に分岐管を配設する際に、その分
岐孔に装着される防食スリーブに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anticorrosion sleeve which is installed in a branch hole when the branch pipe is arranged in an inner surface resin-coated metal pipe used for a water main pipe or the like.
【０００２】[0002]
【従来の技術】水道本管等に用いられる金属管等として
は、内面防食された内面樹脂被覆鋳鉄管等が一般に用い
られてきており、その金属管に分岐管を設けるために穿
孔した分岐孔面を防食するために、分岐孔に防食リング
を装着することが一般的に行われている。その具体例と
しては、例えば、特開平４─２５４０９１号公報に記載
の如く、金属管の穿孔部に挿入されるゴムなどの弾性ス
リーブと、この弾性スリーブの内部に挿入されるステン
レスなどの耐蝕性金属スリーブとを有し、耐蝕性スリー
ブの径方向の適当位置を径方向内向きに変形させた縮径
状態にて弾性スリーブ内に挿入可能であるとともに、弾
性スリーブ内で拡径したときにこの弾性スリーブを径方
向外向きに押圧して拡径可能に構成した防食スリーブが
記載されている。2. Description of the Related Art As a metal pipe or the like used for a water main, an inner resin-coated cast iron pipe having an inner corrosion protection has been generally used, and a branch hole drilled to provide a branch pipe in the metal pipe. In order to protect the surface from corrosion, it is common practice to attach a corrosion protection ring to the branch hole. As a specific example thereof, as described in, for example, Japanese Patent Application Laid-Open No. 4-254091, an elastic sleeve made of rubber or the like inserted into the perforated portion of the metal tube, and corrosion resistance of stainless steel or the like inserted inside the elastic sleeve. It has a metal sleeve and can be inserted into the elastic sleeve in a reduced diameter state in which the appropriate position in the radial direction of the corrosion resistant sleeve is deformed inward in the radial direction. A corrosion-preventing sleeve is described in which an elastic sleeve is pressed outward in the radial direction so that the diameter can be expanded.
【０００３】又、特公昭５８─３６２４０号公報には、
一端部の外周に鍔が設けられた防食環が記載されてい
る。Further, Japanese Patent Publication No. 58-36240 discloses that
An anticorrosion ring provided with a collar on the outer periphery of one end is described.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前者の
場合には、防食スリーブを金属管の穿孔部に装着する際
に、装着具を用いて、弾性スリーブ内にて変形された縮
径状態の耐蝕性スリーブを拡径するする作業が容易でな
く、又、後者の場合には、防食環押込機を用いて水道本
管の分岐孔の所定箇所に防食環を装着する作業が容易で
ないという問題点がある。However, in the former case, when the anticorrosion sleeve is mounted on the perforated portion of the metal tube, the mounting tool is used to corrode the reduced-diameter corrosion resistance deformed in the elastic sleeve. The problem is that it is not easy to expand the diameter of the flexible sleeve, and in the latter case, it is not easy to install an anticorrosion ring at a predetermined location of the branch hole of the water main using an anticorrosion ring pushing machine. There is.
【０００５】本発明は、上記の如き従来の問題点を解消
し、水道本管等に用いられる内面樹脂被覆金属管に分岐
管を配設する際に、その分岐孔への装着が容易であり、
且つ、分岐孔の金属面の防食性及び水密性に優れた状態
にて分岐管を配設することができる防食スリーブを提供
することを目的としてなされたものである。The present invention solves the above-mentioned problems of the prior art, and when a branch pipe is arranged on an inner resin-coated metal pipe used for a water main, etc., it can be easily attached to the branch hole. ,
Moreover, it is an object of the present invention to provide an anticorrosion sleeve in which the branch pipe can be arranged in a state where the metal surface of the branch hole is excellent in anticorrosion property and watertightness.
【０００６】[0006]
【課題を解決するための手段】本発明は、内面樹脂被覆
金属管の分岐孔に装着される防食スリーブであって、先
端部を軸方向に沿って折り込んで縮径状態としたり押し
広げて筒状とすることが可能とされ、基端部に軸方向に
沿って切欠き部が形成されるとともにその切欠き部を除
く外周に周方向に沿って鍔部が設けられた樹脂製スリー
ブ本体と、その樹脂製スリーブ本体の先端部の、外周に
装着されるゴム環と、内周に装着される金属製止めリン
グとからなる防食スリーブである。DISCLOSURE OF THE INVENTION The present invention is an anticorrosion sleeve mounted in a branch hole of an inner surface resin-coated metal pipe, the tip end portion of which is folded axially in a reduced diameter state or widened to form a cylinder. A resin sleeve main body having a notch portion formed in the base end portion along the axial direction and a flange portion provided along the circumferential direction on the outer periphery excluding the notch portion. The anticorrosion sleeve comprises a rubber ring mounted on the outer circumference and a metal stop ring mounted on the inner circumference of the tip of the resin sleeve body.
【０００７】本発明において、樹脂製スリーブ本体を構
成する材料としては、例えば、ポリ塩化ビニル、ポリエ
チレン、ポリプロピレン等の熱可塑製樹脂等が用いられ
る。ゴム環を構成する材料としては、例えば、天然ゴ
ム、合成ゴム等が挙げられる。金属製止めリングを構成
する材料としては、耐蝕性に優れた材料が好適に用いら
れ、例えば、ステンレス等が挙げられる。In the present invention, as the material forming the resin sleeve body, for example, thermoplastic resin such as polyvinyl chloride, polyethylene or polypropylene is used. Examples of the material forming the rubber ring include natural rubber and synthetic rubber. As a material forming the metal stop ring, a material having excellent corrosion resistance is preferably used, and examples thereof include stainless steel.
【０００８】[0008]
【作用】本発明の防食スリーブは、内面樹脂被覆金属管
の分岐孔に装着される防食スリーブであって、先端部を
軸方向に沿って折り込んで縮径状態としたり押し広げて
筒状とすることが可能とされ、基端部に軸方向に沿って
切欠き部が形成されるとともにその切欠き部を除く外周
に周方向に沿って鍔部が設けられた樹脂製スリーブ本体
と、その樹脂製スリーブ本体の先端部の、外周に装着さ
れるゴム環と、内周に装着される金属製止めリングとか
らなることにより、内面樹脂被覆金属管に分岐管を配設
する際に、その先端部を軸方向に沿って折り込んだ縮径
状態となし、その外周にゴム環を装着した状態にて内面
樹脂被覆金属管に分岐孔の所定位置に配設しておいて、
その内方から金属製止めリングにより筒状に拡径するこ
とができるので、分岐孔への装着が容易であり、且つ、
分岐孔の金属面の防食性及び水密性に優れた状態にて分
岐管を配設することができる。The anticorrosion sleeve of the present invention is an anticorrosion sleeve which is mounted in a branch hole of an inner surface resin-coated metal pipe, and has a distal end portion axially folded into a reduced diameter state or expanded to form a tubular shape. And a resin sleeve body in which a notch is formed along the axial direction at the base end and a flange is provided along the circumferential direction on the outer periphery excluding the notch, and the resin When the branch pipe is arranged on the inner surface resin-coated metal pipe, the tip of the sleeve body is made up of a rubber ring mounted on the outer periphery and a metal stop ring mounted on the inner periphery. The portion is folded in the axial direction and the diameter is reduced, and the rubber ring is attached to the outer periphery of the portion, and the inner surface resin-coated metal pipe is arranged at a predetermined position of the branch hole.
Since the diameter can be expanded cylindrically from the inside by a metal stop ring, it is easy to install in the branch hole, and
The branch pipe can be arranged in a state where the metal surface of the branch hole is excellent in corrosion resistance and watertightness.
【０００９】[0009]
【実施例】以下、本発明を実施例により図面を参照して
説明する。図１は、本発明の防食スリーブＡの一実施例
を示す説明図であり、（ａ）はそのスリーブ本体とゴム
環を示す一部切欠き正面図、（ｂ）は（ａ）の左側面
図、（ｃ）はその金属製止めリングを示す一部切欠き正
面図である。防食スリーブＡは、樹脂製スリーブ本体１
と、スリーブ本体１の先端部１１の外周に装着されるゴ
ム環２と、先端部１１の内周に装着される金属製止めリ
ング３とからなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings. FIG. 1 is an explanatory view showing an embodiment of the anticorrosion sleeve A of the present invention. (A) is a partially cutaway front view showing a sleeve body and a rubber ring, (b) is a left side surface of (a) FIG. 1C is a partially cutaway front view showing the metal retaining ring. The anticorrosion sleeve A is a resin sleeve body 1
And a rubber ring 2 mounted on the outer circumference of the tip portion 11 of the sleeve body 1 and a metal stopper ring 3 mounted on the inner circumference of the tip portion 11.
【００１０】図１において、１はポリ塩化ビニル等の材
料からなる樹脂製スリーブ本体である。スリーブ本体１
の先端部１１側は、全周にわたって軸方向に折り目１１
１が入るように折り込んで縮径状態とされるとともに、
その縮径状態の内側から押し広げて筒状とすることが可
能とされている。In FIG. 1, reference numeral 1 is a resin sleeve body made of a material such as polyvinyl chloride. Sleeve body 1
11 has a fold line 11 in the axial direction over the entire circumference.
It is folded so that 1 can enter and is in a reduced diameter state,
It is possible to push out from the inside of the reduced diameter state to form a tubular shape.
【００１１】先端部１１の端縁の内周に、内方に突出す
る係止部１１２を設けておくと、その係止部１１２に後
述する金属製止めリングの先端面を当接するようにして
係止することができるので好ましい。If a locking portion 112 protruding inward is provided on the inner circumference of the edge of the tip portion 11, the locking portion 112 is brought into contact with the tip surface of a metal stopper ring described later. It is preferable because it can be locked.
【００１２】スリーブ本体１の基端部１２には、軸方向
に沿って４箇所に切欠き部１２１が形成されるととも
に、切欠き部１２１を除く外周に周方向に沿って鍔部１
２２が設けられている。これにより基端部１２は外側か
ら鍔部１２２を押圧することにより、切欠き部１２１の
間隙を狭めるようにして縮径状態とすることができ、
又、その押圧状態を解除することにより筒状とすること
ができるようにされている。Notched portions 121 are formed at four locations along the axial direction on the base end portion 12 of the sleeve body 1, and the collar portion 1 is provided on the outer periphery excluding the notched portions 121 along the circumferential direction.
22 is provided. As a result, the proximal end portion 12 can press the flange portion 122 from the outside to narrow the gap between the cutout portions 121 and be in a reduced diameter state.
Further, by releasing the pressed state, it can be made into a tubular shape.
【００１３】尚、切欠き部１２１は１箇所だけ形成され
ていてもよいし、又、多数箇所形成されていてもよい。
このとき、切込み部の間隙の合計は、通常、縮径状態と
したときの鍔部１２２の外径が、中央側の筒状部１３の
外径Ｄ1 と同等かそれよりもやや小さくなるようにされ
る。The notch 121 may be formed in only one place, or may be formed in multiple places.
At this time, the total of the gaps of the cut portions is usually such that the outer diameter of the collar portion 122 in the reduced diameter state is equal to or slightly smaller than the outer diameter D 1 of the cylindrical portion 13 on the center side. To be
【００１４】２はスリーブ本体１の先端部１１の外周に
装着される伸び縮みするゴム環であり、その内周面は、
スリーブ本体１の先端部１１が折り込んで縮径状態とさ
れている時にはその先端部１１の山部の頂部との間が接
着されており、装着時には、その内周面は押し広げられ
た筒状のスリーブ本体１の先端部１１の外周面に密着さ
れている。ゴム環２の筒状部２１の外周面には周方向に
沿って止水用の突条２２が２条設けられている。Reference numeral 2 denotes an elastic rubber ring mounted on the outer circumference of the tip portion 11 of the sleeve body 1, the inner peripheral surface of which is
When the tip portion 11 of the sleeve body 1 is folded into a reduced diameter state, the tip portion 11 is adhered to the top of the mountain portion, and at the time of mounting, the inner peripheral surface of the sleeve portion 1 is expanded and has a cylindrical shape. The outer peripheral surface of the tip portion 11 of the sleeve body 1 is closely attached. On the outer peripheral surface of the tubular portion 21 of the rubber ring 2, two water-stop projections 22 are provided along the circumferential direction.
【００１５】３はスリーブ本体１の先端部１１の内周
に、その内方から押し広げるようにして装着されるステ
ンレスからなる金属製止めリングである。尚、金属製止
めリング３の外周面に、スリーブ本体１の縮径状態の先
端部１１側を内方から押し広げるときには障害となら
ず、装着後、後述する押込み機の押込み棒を後退させる
ときにはスリーブ本体１の先端部１１内に係止し易くす
るような滑り止めを設けるのが好ましい。Reference numeral 3 denotes a metal stop ring made of stainless steel which is mounted on the inner periphery of the tip portion 11 of the sleeve body 1 so as to be spread from the inside. It should be noted that when the tip end 11 side of the sleeve main body 1 in the reduced diameter state is expanded from the inside to the outer peripheral surface of the metal stop ring 3, there is no obstacle, and when the push rod of the pusher to be described later is retracted after mounting. It is preferable to provide a slip stopper that facilitates locking in the tip portion 11 of the sleeve body 1.
【００１６】次に、図１に示す防食スリーブＡを用い
て、内面樹脂被覆金属管に分岐管を配設する状態を図２
及び図３を参照して説明する。Next, using the anticorrosion sleeve A shown in FIG. 1, a state in which a branch pipe is arranged on an inner resin-coated metal pipe is shown in FIG.
And FIG. 3 will be described.
【００１７】図２において、４は内面樹脂被覆金属管５
に分岐管を配設するのに用いられるサドル分水栓であ
り、サドル部４１の中央部の外方に、膨出部４２、立ち
上がり部４３、頭部４４が順次設けられ、それらを挿通
して、内面樹脂被覆金属管５に穿設された分岐孔５１か
ら外方に通じる通孔４５が設けられている。In FIG. 2, reference numeral 4 denotes an inner surface resin-coated metal tube 5.
It is a saddle diversion valve used for arranging a branch pipe on the outside of the saddle part 41. A swelling part 42, a rising part 43, and a head part 44 are sequentially provided on the outside of the center part of the saddle part 41, and they are inserted. In addition, a through hole 45 communicating with the outside from the branch hole 51 formed in the inner surface resin-coated metal pipe 5 is provided.
【００１８】膨出部４２内は拡径されており、その部分
がパッキング装着部４６とされている。立ち上がり部４
３の内面には、周方向に沿って、スリーブ本体１の鍔部
１２２が係止される切込み溝４３１が設けられている。
頭部４４には弁体４４１が設けられている。弁体４４１
には、軸方向と直交する方向に、通孔４５と同径の弁孔
４４１ａが設けられており、弁孔４４１ａから軸方向に
外方に通じる連通孔４４１ｂが設けられており、その開
口部側にキャップ４４１ｃが嵌められている。頭部４４
の頂部には短管部４４２が設けられ、短管部４４２の外
周面には雄ねじ部４４３が形成されている。The inside of the bulging portion 42 is enlarged in diameter, and that portion serves as a packing mounting portion 46. Rising section 4
On the inner surface of 3, a notch groove 431 is provided along the circumferential direction in which the flange 122 of the sleeve body 1 is locked.
The head 44 is provided with a valve body 441. Disc 441
Is provided with a valve hole 441a having the same diameter as the through hole 45 in a direction orthogonal to the axial direction, and a communication hole 441b communicating axially outward from the valve hole 441a is provided in the opening. A cap 441c is fitted on the side. Head 44
A short pipe portion 442 is provided on the top of the, and a male screw portion 443 is formed on the outer peripheral surface of the short pipe portion 442.
【００１９】６は、押込み機であって、押し棒６１と袋
ナット６２からなる。押し棒６１は、先端部に段部を経
て小径とされた防食スリーブＡの金属製止めリング３の
仮着部６１１が設けられており、その仮着部６１１に金
属製止めリング３の後端面を段部面に当接するようにし
て仮着して押し込むことができるようにされている。
又、押し棒６１の基端部のやや中央よりに鍔部６１２が
設けられている。Reference numeral 6 is a pusher, which comprises a push rod 61 and a cap nut 62. The push rod 61 is provided with a temporary attachment portion 611 of the metal retaining ring 3 of the anticorrosion sleeve A having a small diameter through a step portion at the tip portion thereof, and the temporary attachment portion 611 has a rear end surface of the metal retaining ring 3. Is abutted against the step surface and can be temporarily attached and pushed.
Further, a flange portion 612 is provided slightly closer to the center of the base end portion of the push rod 61.
【００２０】袋ナット６２には、一端部にサドル分水栓
４の雄ねじ部４４２ａに螺合する雌ねじ部６２１が設け
られるとともに、他端部に押し棒６１の基端部の鍔部６
２より外側のシャフト６３の外径よりもやや大きい穴部
６２２が設けられている。The cap nut 62 is provided at one end with a female screw portion 621 that is screwed into the male screw portion 442a of the saddle water tap 4, and at the other end thereof, the collar portion 6 at the base end portion of the push rod 61.
A hole portion 622, which is slightly larger than the outer diameter of the shaft 63 on the outer side of 2, is provided.
【００２１】尚、この実施例における、防食スリーブ
Ａ、サドル分岐栓４及び押込み機６間の寸法関係は、次
の通りとされている。The dimensional relationship among the anticorrosion sleeve A, the saddle branch plug 4 and the pushing device 6 in this embodiment is as follows.
【００２２】防食スリーブＡのスリーブ本体１の鍔部１
２２の外径Ｗ1 は、外方から押圧力を加えない状態のと
きには、サドル分水栓４の切込み溝４３１の内径ｗ1 と
同じとされ、外側から押圧力を加えて縮径状態としたと
きには、サドル分水栓４の通孔４４の内径ｄ1 よりも
０．２ｍｍ程度小さくなるようにされている。Collar 1 of sleeve body 1 of anticorrosion sleeve A
The outer diameter W 1 of 22 is the same as the inner diameter w 1 of the cut groove 431 of the saddle diversion tap 4 when the pressing force is not applied from the outside, and the pressing force is applied from the outside to reduce the diameter. At times, the inner diameter d 1 of the through hole 44 of the saddle water tap 4 is set to be smaller by about 0.2 mm.
【００２３】防食スリーブＡのスリーブ本体１の筒状部
１３の外径Ｄ1 は、サドル分水栓４の通孔４４の内径ｄ
1 よりも０．２ｍｍ程度小さくなるようにされている。
スリーブ本体１の先端部１１の折り込んで縮径状態にお
けるその外接円の径Ｄ 2 は、サドル分水栓４の通孔４４
の内径ｄ1 よりも２．５ｍｍ程度小さくなるようにされ
ている。防食スリーブＡのゴム環２の筒状部２１の肉厚
は１ｍｍ程度とされ、サドル分水栓４の通孔４４内を支
障なく通過させることができるようにされている。Cylindrical portion of the sleeve body 1 of the anticorrosion sleeve A
Outer diameter of 13 D1Is the inner diameter d of the through hole 44 of the saddle water tap 4.
1It is designed to be smaller by about 0.2 mm.
The tip portion 11 of the sleeve body 1 is folded in to reduce the diameter.
The diameter D of the circumscribed circle 2Is a through hole 44 of the saddle water tap 4.
Inner diameter d1Is about 2.5 mm smaller than
ing. Thickness of the tubular portion 21 of the rubber ring 2 of the anticorrosion sleeve A
Is about 1 mm, and the inside of the through hole 44 of the saddle water faucet 4 is supported.
It is designed so that it can be passed without obstacles.
【００２４】押込み機６の押し棒６１の外径ｄ2 は、サ
ドル分水栓４の通孔４４の内径ｄ1よりも１．５ｍｍ程
度小さくしており、押し棒６１を通孔４４に押し込むと
きの摩擦抵抗がほとんどない構造とされている。The outer diameter d 2 of the push rod 61 of the pusher 6 is smaller than the inner diameter d 1 of the through hole 44 of the saddle water tap 4 by about 1.5 mm, and the push rod 61 is pushed into the through hole 44. It has a structure with almost no frictional resistance.
【００２５】内面樹脂被覆金属管５に分岐管を配設する
には、次のようにして行う。まず、図２に示す如く、内
面樹脂被覆金属管５の分岐管を配設する部分に、パッキ
ング装着部４６にパッキング７を装着したサドル分水栓
４を装着する。The branch pipe is arranged in the inner resin-coated metal pipe 5 as follows. First, as shown in FIG. 2, the saddle water faucet 4 with the packing 7 attached to the packing attaching portion 46 is attached to the portion of the inner resin-coated metal pipe 5 where the branch pipe is arranged.
【００２６】特に図示しないが、先端部が尖っているこ
と以外は押し棒６１と同じ構造の錐と上記の袋ナット６
２を用いて、袋ナット６２をしめ込み、錐の先端部を弁
体４４１を開の状態にしたサドル分水栓４の通孔４５内
に押し込んでいって、内面樹脂被覆金属管５に所定箇所
に分岐孔５１を形成した後、錐を持ち上げて、サドル分
岐栓４の弁体４４１を閉の状態にした後、錐を取り去
る。Although not shown in the drawing, a cone having the same structure as the push rod 61 except that the tip portion is sharp and the cap nut 6 described above.
2, the cap nut 62 is tightened, and the tip of the cone is pushed into the through hole 45 of the saddle water tap 4 with the valve body 441 in the open state, and the inner surface resin-coated metal pipe 5 is predetermined. After forming the branch hole 51 at the location, the cone is lifted to close the valve body 441 of the saddle branch plug 4, and then the cone is removed.
【００２７】次に、図２に示す如く、防食スリーブＡ
を、先端部１１を折り込んで縮径状態となし、その先端
部１１上にゴム環２を装着するとともに、基端部１２の
鍔部１２２を外方から押圧して縮径状態となしつつ、先
端部１１側からサドル分水栓４の通孔４５内に挿入す
る。Next, as shown in FIG. 2, the anticorrosion sleeve A
While the tip end portion 11 is folded into a reduced diameter state, the rubber ring 2 is mounted on the tip end portion 11, and the collar portion 122 of the base end portion 12 is pressed from the outside to achieve the reduced diameter state. It is inserted into the through hole 45 of the saddle water tap 4 from the side of the tip 11.
【００２８】押し棒６１の先端の仮着部６１１に金属製
止めリング３を仮着し、基端部のシャフト６１３を袋ナ
ット６２の穴部６２２内に挿通し、その穴部６２２の周
縁部を鍔部６１２の側面に当接するようにする。この状
態にて押し棒６１の先端部をサドル分水栓４の通孔４５
内に入れ、先に挿入した防食スリープＡの縮径状態とさ
れた基端部１２の後端に当接させるようにして、袋ナッ
ト６２の雌ねじ部６２１をサドル分岐栓４の雄ねじ部４
４３に螺合する。The metal stop ring 3 is temporarily attached to the temporary attachment portion 611 at the tip of the push rod 61, the shaft 613 at the base end portion is inserted into the hole portion 622 of the cap nut 62, and the peripheral edge portion of the hole portion 622 is inserted. To contact the side surface of the collar portion 612. In this state, the tip of the push rod 61 is connected to the through hole 45 of the saddle water tap 4.
The male threaded portion 4 of the saddle branch plug 4 is inserted into the female threaded portion 621 of the cap nut 62 such that the female threaded portion 621 of the cap nut 62 is brought into contact with the rear end of the reduced diameter base end portion 12 of the anticorrosion sleep A inserted earlier.
It is screwed to 43.
【００２９】サドル分水栓４の弁体４５を開となし、更
に、袋ナット６２をしめ込んでいって、押し棒６１の先
端部を内面樹脂被覆金属管５の分岐孔５１の方向に押し
込んでいく。The valve body 45 of the saddle water tap 4 is opened, and the cap nut 62 is further tightened to push the tip of the push rod 61 toward the branch hole 51 of the inner surface resin-coated metal pipe 5. Go out.
【００３０】すると、防食スリーブＡは、基端部１２の
鍔部１２２が、サドル分水栓４の立上り部４３の内面に
設けられた切込み溝４３１の部分に到達した時に、切込
み溝４３１内に嵌合するようにして復元状態となるとと
もに、先端部１１の外周に装着したゴム環２が内面樹脂
被覆金属管５の分岐孔５１の内方に位置するように配設
される。Then, in the anticorrosion sleeve A, when the collar portion 122 of the base end portion 12 reaches the portion of the cut groove 431 provided on the inner surface of the rising portion 43 of the saddle water tap 4, the anticorrosive sleeve A is inserted into the cut groove 431. The rubber ring 2 mounted on the outer circumference of the tip portion 11 is arranged so as to be located inside the branch hole 51 of the inner surface resin-coated metal pipe 5 while being fitted into the restored state.
【００３１】更に、押し棒６１を押し込んでいくと、仮
着部６１１に金属製止めリング３を仮着した状態にて、
防食スリーブＡの復元状態となった基端部１２内を通過
した後、折り込まれて縮径状態とされた先端部１１側内
を金属製止めリング３が内方から順次先端まで筒状に押
し広げていく。When the push rod 61 is further pushed in, with the metal retaining ring 3 temporarily attached to the temporary attachment portion 611,
After passing through the base end portion 12 in the restored state of the anticorrosion sleeve A, the metal stopper ring 3 pushes the inside of the distal end portion 11 side, which is folded and reduced in diameter, from the inside to the tip end in a cylindrical shape. Expand.
【００３２】しかる後に、押し棒６１を後退させると、
図３に示す如く、金属製止めリング３がスリーブ本体１
の先端部１１を筒状に押し広げた状態にてその内部に係
止されるようにして装着されるともに、ゴム環２をスリ
ーブ本体１の筒状の先端部１１の外周面にて面樹脂被覆
金属管５の分岐孔５１の内周面に押圧した状態にて密封
する。After that, when the push rod 61 is retracted,
As shown in FIG. 3, the metal stopper ring 3 is attached to the sleeve body 1.
The distal end 11 of the sleeve is mounted in such a manner that it is extended in a cylindrical shape and is locked therein, and the rubber ring 2 is attached to the outer surface of the cylindrical distal end 11 of the sleeve body 1 by a surface resin. The coated metal tube 5 is sealed while being pressed against the inner peripheral surface of the branch hole 51.
【００３３】押し棒６１を除去し、サドル分水栓４４の
弁体４４１の開口部をキャップ４４１ｃを嵌めることに
より閉となするともに、短管４４２の開口部をキャップ
を嵌めることにより閉となして、内面樹脂被覆金属管５
の分岐管の配設作業を終了する。The push rod 61 is removed, the opening of the valve body 441 of the saddle water tap 44 is closed by fitting the cap 441c, and the opening of the short pipe 442 is closed by fitting the cap. Internal resin coated metal tube 5
The branch pipe installation work is completed.
【００３４】[0034]
【発明の効果】本発明の防食スリーブは、上記の如き構
成とされているので、内面樹脂被覆金属管に分岐管を配
設する際に、その分岐孔への装着が容易であり、且つ、
分岐孔の金属面の防食性及び水密性に優れた状態にて分
岐管を配設することができる。Since the anticorrosion sleeve of the present invention is constructed as described above, it is easy to install the branch pipe in the inner surface resin-coated metal pipe when the branch pipe is arranged, and
The branch pipe can be arranged in a state where the metal surface of the branch hole is excellent in corrosion resistance and watertightness.
【図１】本発明の防食スリーブの一実施例を示す説明図
であり、（ａ）はそのスリーブ本体とゴム環を示す一部
切欠き正面図、（ｂ）は（ａ）の左側面図、（ｃ）はそ
の金属製止めリングを示す一部切欠き正面図である。FIG. 1 is an explanatory view showing an embodiment of an anticorrosion sleeve of the present invention, in which (a) is a partially cutaway front view showing a sleeve body and a rubber ring, (b) is a left side view of (a). , (C) is a partially cutaway front view showing the metal retaining ring.
【図２】図１に示す防食スリーブを用いて内面樹脂被覆
金属管に分岐管を配設する前半の工程を示す断面図であ
る。FIG. 2 is a cross-sectional view showing a first half step of disposing a branch pipe on an inner surface resin-coated metal pipe using the anticorrosion sleeve shown in FIG.
【図３】図１に示す防食スリーブを用いて内面樹脂被覆
金属管に分岐管を配設する後半の工程を示す断面図であ
る。FIG. 3 is a cross-sectional view showing a latter half step of disposing a branch pipe in an inner resin-coated metal pipe using the anticorrosion sleeve shown in FIG.
Ａ 防食スリーブ １ スリーブ本体 ２ ゴム環 ３ 金属製止めリング １１ 先端部 １２ 基端部 １２１ 切欠き １２２ 鍔部 A Anticorrosion sleeve 1 Sleeve body 2 Rubber ring 3 Metal stop ring 11 Tip part 12 Base end part 121 Notch 122 Collar part
Claims (1)
れる防食スリーブであって、先端部を軸方向に沿って折
り込んで縮径状態としたり押し広げて筒状とすることが
可能とされ、基端部に軸方向に沿って切欠き部が形成さ
れるとともにその切欠き部を除く外周に周方向に沿って
鍔部が設けられた樹脂製スリーブ本体と、その樹脂製ス
リーブ本体の先端部の、外周に装着されるゴム環と、内
周に装着される金属製止めリングとからなることを特徴
とする防食スリーブ。1. An anticorrosion sleeve mounted in a branch hole of an inner surface resin-coated metal pipe, wherein a tip end portion thereof can be folded along an axial direction to be in a reduced diameter state or pushed and expanded to form a tubular shape. , A resin sleeve body having a notch formed in the base end portion along the axial direction and a flange portion provided along the circumferential direction on the outer periphery excluding the notch portion, and the tip of the resin sleeve body An anticorrosion sleeve, characterized in that it comprises a rubber ring mounted on the outer periphery and a metal retaining ring mounted on the inner periphery of the portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27507894A JPH08135885A (en) | 1994-11-09 | 1994-11-09 | Erosion-proof sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27507894A JPH08135885A (en) | 1994-11-09 | 1994-11-09 | Erosion-proof sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08135885A true JPH08135885A (en) | 1996-05-31 |
Family
ID=17550515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27507894A Pending JPH08135885A (en) | 1994-11-09 | 1994-11-09 | Erosion-proof sleeve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08135885A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013199972A (en) * | 2012-03-23 | 2013-10-03 | Cosmo Koki Co Ltd | Core assembling device and core fitting method using the same |
| JP2014081003A (en) * | 2012-10-15 | 2014-05-08 | Maezawa Kyuso Industries Co Ltd | Snap tap contact core and installing method |
-
1994
- 1994-11-09 JP JP27507894A patent/JPH08135885A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013199972A (en) * | 2012-03-23 | 2013-10-03 | Cosmo Koki Co Ltd | Core assembling device and core fitting method using the same |
| JP2014081003A (en) * | 2012-10-15 | 2014-05-08 | Maezawa Kyuso Industries Co Ltd | Snap tap contact core and installing method |
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