JP2001304487A - Anticorrosion sleeve - Google Patents
Anticorrosion sleeveInfo
- Publication number
- JP2001304487A JP2001304487A JP2000117426A JP2000117426A JP2001304487A JP 2001304487 A JP2001304487 A JP 2001304487A JP 2000117426 A JP2000117426 A JP 2000117426A JP 2000117426 A JP2000117426 A JP 2000117426A JP 2001304487 A JP2001304487 A JP 2001304487A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- resin
- metal
- diameter
- metal sleeve
- 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
- Branch Pipes, Bends, And The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、水道本管などの金
属管に開孔した場合に露出する金属の防食を目的とした
防食スリーブの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an anticorrosion sleeve for preventing corrosion of a metal exposed when a metal pipe such as a water main pipe is opened.
【0002】[0002]
【発明が解決しようとする課題】従来から水道本管など
に分岐管を設ける場合には先ず本管に開孔を施し、開孔
周面の防食のためにスリーブを密挿する技術は公知であ
る。例えば、出願人も実開平7−23892号公報に記
載されたような防食スリーブを既に開示している。とこ
ろで、上記防食スリーブは金属スリーブと弾性スリーブ
を組み合わせたものであるが、密に接触させるために金
属スリーブの断面形状を複雑にしている。従って、製造
コストが高くつくうえに、金属部分を拡径するために変
形時や拡径器具の引き抜き時に大きい力を必要とする。
また、より従来の構造において金属スリーブと通水口お
よび穿孔された開孔の間に若干の隙間ができた場合に
は、その部分に錆こぶが発生するという課題がある。Conventionally, when a branch pipe is provided in a water main pipe or the like, there is known a technique of first opening a main pipe and then closely inserting a sleeve to prevent corrosion of the peripheral surface of the opening. is there. For example, the applicant has already disclosed an anticorrosion sleeve as described in Japanese Utility Model Laid-Open No. Hei 7-23892. Incidentally, the anticorrosion sleeve is a combination of a metal sleeve and an elastic sleeve, but the cross-sectional shape of the metal sleeve is complicated to make close contact. Therefore, the manufacturing cost is high, and a large force is required at the time of deformation or withdrawal of the diameter-expanding device to expand the diameter of the metal portion.
Further, when a slight gap is formed between the metal sleeve and the water hole and the perforated hole in the more conventional structure, there is a problem that rust bumps are generated at that portion.
【0003】一方、素材をゴムで形成した密着スリーブ
も従来から公知であるが、この場合には開孔に打ち込む
ときに強すぎればゴムが座屈して施工不具合が発生す
る。また、穿孔は一般的には平滑面ではないので、ゴム
が鋭利な箇所に接触した状態で打ち込まれればゴム表面
が切削され、十分な防食効果を期待することができない
場合が生ずる。[0003] On the other hand, a close contact sleeve made of rubber is also known in the past, but in this case, if it is too strong when driven into an opening, the rubber will buckle and a construction failure will occur. In addition, since the perforations are not generally smooth surfaces, if the rubber is driven in contact with sharp points, the rubber surface is cut off, and a sufficient anticorrosion effect may not be expected.
【0004】本発明は上述した従来の課題を解決するも
ので、比較的簡単な施工によって確実に防食効果を維持
することができる構造のスリーブを開示することを目的
とする。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to disclose a sleeve having a structure capable of reliably maintaining an anticorrosion effect by relatively simple construction.
【0005】[0005]
【課題を解決するための手段】本発明では上記目的を達
成するために、略円筒状の樹脂スリーブと、この樹脂ス
リーブの内周に密に挿通される金属スリーブからなる二
重構造とした。そして、樹脂スリーブは挿通方向に対し
て順に大径内周と小径内周を有し、金属スリーブは挿通
方向に対して順に大径外周と中間外周と小径外周を有
し、樹脂スリーブの大径内周と金属スリーブの中間外周
および小径外周の高さと、樹脂スリーブの小径内周と金
属スリーブの大径外周の高さを一致させるという手段を
用いることとした。金属スリーブは、スリーブとしての
剛性を確保する機能を有している。また、樹脂スリーブ
は水道本管に穿孔された開孔に対する密着性を確保する
機能を有している。そして、金属スリーブの完全な装着
によって樹脂スリーブを拡開し、これによってスリーブ
を本管の開孔に密着させる。In order to achieve the above object, the present invention has a double structure comprising a substantially cylindrical resin sleeve and a metal sleeve which is densely inserted into the inner periphery of the resin sleeve. The resin sleeve has a large-diameter inner circumference and a small-diameter inner circumference in order with respect to the insertion direction, and the metal sleeve has a large-diameter outer circumference, an intermediate outer circumference, and a small-diameter outer circumference in order with respect to the insertion direction. Means is used in which the height of the middle circumference and the outer circumference of the small diameter of the metal sleeve and the height of the small diameter inner circumference of the resin sleeve and the height of the large diameter outer circumference of the metal sleeve match. The metal sleeve has a function of securing rigidity as the sleeve. In addition, the resin sleeve has a function of ensuring adhesion to an opening formed in the water main. Then, the resin sleeve is expanded by completely mounting the metal sleeve, thereby bringing the sleeve into close contact with the opening of the main pipe.
【0006】金属スリーブをステンレス製とすることに
よって、確実な防食を維持する。また、樹脂スリーブに
硬質合成樹脂を採用することによって、適度な変形性と
硬質度を確保する。[0006] By making the metal sleeve made of stainless steel, reliable corrosion protection is maintained. In addition, by adopting a hard synthetic resin for the resin sleeve, appropriate deformability and hardness are ensured.
【0007】[0007]
【発明の実施の形態】以下、本発明の好ましい実施形態
を、添付した図面に従って説明する。図1は本発明の防
食スリーブの一部をなす金属スリーブの全体を示したも
ので、円筒状の金属スリーブ1は内周面2が正確に円筒
形状である一方、外周面3は挿入基端側から順に段差が
設けられて3段に絞られている。ここで、最大外周径か
ら順に3a、3b、3cの番号を付与する。また、基端
側にはフランジ4が設けられている。金属素材は本発明
の目的を達成する素材である必要があり、防食性が高い
ステンレスなどの素材を採用する。Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the entirety of a metal sleeve forming a part of the anticorrosion sleeve of the present invention. A cylindrical metal sleeve 1 has an inner peripheral surface 2 which is accurately cylindrical, while an outer peripheral surface 3 has an insertion base end. Steps are provided in order from the side and narrowed down to three steps. Here, numbers 3a, 3b, and 3c are assigned in order from the maximum outer diameter. A flange 4 is provided on the base end side. The metal material must be a material that achieves the object of the present invention, and a material such as stainless steel having high anticorrosion properties is employed.
【0008】図2は金属スリーブ1の外側に位置するこ
とになる樹脂スリーブ5の全体を示したもので、外周面
6を大径外周6aと小径外周6bで構成し、内周面7も
大径内周7aと小径内周7bで構成している。そして、
樹脂スリーブ5の内側に金属スリーブ1を打ち込むこと
によって、本発明の防食スリーブが構成されることにな
る。大径外周6aと小径外周6bによって形成された段
は、水道本管に対して樹脂スリーブ5を挿入する際の位
置決め用の段差である。FIG. 2 shows the entire resin sleeve 5 located outside the metal sleeve 1. The outer peripheral surface 6 is composed of a large-diameter outer periphery 6a and a small-diameter outer periphery 6b, and the inner peripheral surface 7 is also large. It comprises a diameter inner circumference 7a and a small diameter inner circumference 7b. And
By driving the metal sleeve 1 inside the resin sleeve 5, the anticorrosion sleeve of the present invention is constituted. The step formed by the large-diameter outer periphery 6a and the small-diameter outer periphery 6b is a positioning step when the resin sleeve 5 is inserted into the water main.
【0009】図3は水道本管10に設けられた開孔11
にジグJを用いて防食スリーブを嵌挿するところを示し
たもので、先ず樹脂スリーブ5と金属スリーブ1を予め
一段だけ組み合わせた状態で製品として、これを開孔1
1に嵌合し、続いて金属スリーブ1を樹脂スリーブ5の
内側にジグのピストンなどを利用してさらに押し込む。
図4が作業完了の状態を示している。この場合、金属ス
リーブの外周に形成された3段の段差によって3種類の
外周径が形成されているが、この外周径と樹脂スリーブ
5の内周面7に設けられた大径内周7aと小径内周7b
の関係を説明する。即ち、図3に示したように金属スリ
ーブの外周3aの高さAと樹脂スリーブ5の大径内周7
aの高さaは一致し、金属スリーブの外周3bおよび3
cの和の高さBと樹脂スリーブの小径内周7bの高さb
が一致している。また、直径に関しては樹脂スリーブの
大径内周径と金属スリーブの中間の外周径3bがほぼ一
致している。この状態で樹脂スリーブ5に対して金属ス
リーブ1を押し込んで、図3の製品の状態では樹脂スリ
ーブの大径内周7aと金属スリーブの中間の外周径3b
が同じなので容易に挿入、かつこれを維持することがで
きる。続いて、さらに金属スリーブ1を押し込めば樹脂
スリーブの小径内周7bが金属スリーブの中間外周3b
によって、また樹脂スリーブの大径内周7aが金属スリ
ーブの大径外周3aによってそれぞれ押し広げられて、
外側に変形する。これによって樹脂スリーブと水道本管
10が密着した状態で防食スリーブの装着が完了する。FIG. 3 shows an opening 11 provided in the water main 10.
A jig J is used to insert the anticorrosion sleeve. First, a resin sleeve 5 and a metal sleeve 1 are combined in a single stage in advance to form a product.
Then, the metal sleeve 1 is further pushed into the resin sleeve 5 using a jig piston or the like.
FIG. 4 shows a state in which the work is completed. In this case, three types of outer diameters are formed by three steps formed on the outer circumference of the metal sleeve, and the outer diameter and the large-diameter inner circumference 7a provided on the inner peripheral surface 7 of the resin sleeve 5 are different from each other. Small diameter inner circumference 7b
The relationship will be described. That is, as shown in FIG. 3, the height A of the outer periphery 3a of the metal sleeve and the large-diameter inner periphery 7 of the resin sleeve 5
The heights a of the metal sleeves coincide with each other, and the outer circumferences 3b and 3
c and the height b of the small diameter inner circumference 7b of the resin sleeve
Matches. Further, regarding the diameter, the large inner diameter of the resin sleeve and the outer diameter 3b in the middle of the metal sleeve are almost the same. In this state, the metal sleeve 1 is pushed into the resin sleeve 5, and in the state of the product shown in FIG. 3, the inner diameter 7a of the large diameter of the resin sleeve and the outer diameter 3b of the middle of the metal sleeve are set.
Can be easily inserted and maintained. Subsequently, if the metal sleeve 1 is further pushed in, the small-diameter inner circumference 7b of the resin sleeve becomes the middle outer circumference 3b of the metal sleeve.
And the large-diameter inner circumference 7a of the resin sleeve is expanded by the large-diameter outer circumference 3a of the metal sleeve, respectively.
Deform outward. Thus, the mounting of the anticorrosion sleeve is completed in a state where the resin sleeve and the water main pipe 10 are in close contact with each other.
【0010】なお、金属スリーブ1を樹脂スリーブ5に
対して十分に嵌挿すればフランジ4によってそれ以上の
挿通は抑制されることになる。When the metal sleeve 1 is sufficiently inserted into the resin sleeve 5, the flange 4 prevents further insertion.
【0011】ところで、樹脂スリーブ5の素材として
は、金属スリーブを押し込んでも座屈しない程度の硬質
さが必要である。また、金属スリーブ1を押し込んだ場
合に破断しない程度の弾性あるいは変形性が必要であ
る。例えば、硬質合成樹脂として硬質ポリプロピレンや
ポリエチレンなどが適切な素材の一例として挙げること
ができる。なお、ゴムに近い軟質の樹脂などは従来の課
題で述べたように穿孔面で切削されるおそれがあるの
で、本発明では対象としない。By the way, the material of the resin sleeve 5 needs to be hard enough not to buckle even if the metal sleeve is pushed in. Further, the metal sleeve 1 needs to have elasticity or deformability that does not break when the metal sleeve 1 is pushed. For example, a hard synthetic resin such as hard polypropylene or polyethylene can be cited as an example of a suitable material. It should be noted that a soft resin or the like close to rubber is not included in the present invention because it may be cut on the perforated surface as described in the conventional problem.
【0012】[0012]
【発明の効果】本発明では上述した構成を採用したの
で、金属スリーブによって剛性を確保し、樹脂スリーブ
によって密着性を確保することになり、確実に装着でき
る防食スリーブとすることができた。また、それぞれが
密着した状態で一体化するので、がたつきがないうえ、
樹脂スリーブに対する金属スリーブの押し込みも、予め
樹脂スリーブと金属スリーブが一段だけ組み合わされて
いるので、さらに一段分だけのストロークに対して力を
加えるだけで足り、作業性の向上を図ることができた。According to the present invention, since the above-mentioned structure is adopted, rigidity is ensured by the metal sleeve and adhesion is ensured by the resin sleeve, so that the anticorrosion sleeve can be securely mounted. In addition, because they are integrated in a state where they are in close contact, there is no backlash,
When the metal sleeve is pushed into the resin sleeve, the resin sleeve and the metal sleeve are previously combined in only one stage, so that it is sufficient to apply a force only to the stroke of one stage further, thereby improving workability. .
【0013】さらに、従来のように金属部分を拡径する
ことがなく、金属スリーブが樹脂スリーブに予め組み合
わされているため、これをガイドとして、特殊なジグを
必要とせずに施工が簡単に行うことができ、引き抜き時
であっても大きな力を要することなく作業を行うことが
できる。さらにまた、樹脂スリーブはある程度硬質であ
るから、従来のゴムのように打ち込みすぎて座屈するよ
うな事故を防止できると同時に、穿孔部のエッジなどで
切削されて破断することもない。Further, since the metal portion is not previously expanded and the metal sleeve is pre-assembled with the resin sleeve as in the prior art, the use of the metal sleeve as a guide facilitates the construction without the need for a special jig. Therefore, the work can be performed without a large force even at the time of pulling out. Furthermore, since the resin sleeve is hard to some extent, it is possible to prevent buckling due to excessive driving like conventional rubber, and at the same time, the resin sleeve is not cut and broken at the edge of the perforated portion.
【図1】本発明の防食スリーブの一部である金属スリー
ブの一部断面図FIG. 1 is a partial sectional view of a metal sleeve which is a part of the anticorrosion sleeve of the present invention.
【図2】本発明の防食スリーブの一部である樹脂スリー
ブの一部断面図FIG. 2 is a partial sectional view of a resin sleeve which is a part of the anticorrosion sleeve of the present invention.
【図3】防食スリーブを水道本管に装着する作業前を示
す図FIG. 3 is a diagram showing a state before the work of attaching the anticorrosion sleeve to the water main.
【図4】同、装着完了状態を示す図FIG. 4 is a diagram showing a mounting completion state of the same.
1 金属スリーブ 2 内周面 3 外周面 3a、3b、3c 外周面の段差 4 フランジ 5 樹脂スリーブ 6 外周面 6a 大径外周 6b 小径外周 7 内周面 7a 大径内周 7b 小径内周 DESCRIPTION OF SYMBOLS 1 Metal sleeve 2 Inner peripheral surface 3 Outer peripheral surface 3a, 3b, 3c Step of outer peripheral surface 4 Flange 5 Resin sleeve 6 Outer peripheral surface 6a Large diameter outer periphery 6b Small diameter outer periphery 7 Inner peripheral surface 7a Large diameter inner periphery 7b Small diameter inner periphery
Claims (3)
ーブの内周に密に挿通される金属スリーブからなり、前
記樹脂スリーブは挿通方向に対して順に大径内周と小径
内周を有し、前記金属スリーブは挿通方向に対して順に
大径外周と中間外周と小径外周を有し、樹脂スリーブの
大径内周と金属スリーブの中間外周および小径外周の高
さと、樹脂スリーブの小径内周と金属スリーブの大径外
周の高さを一致させたことを特徴とする防食スリーブ。1. A resin sleeve comprising a substantially cylindrical resin sleeve and a metal sleeve densely inserted through the inner periphery of the resin sleeve, wherein the resin sleeve has a large-diameter inner periphery and a small-diameter inner periphery in order in the insertion direction. The metal sleeve has a large-diameter outer periphery, an intermediate outer periphery, and a small-diameter outer periphery in order with respect to the insertion direction, and the height of the large-diameter inner periphery of the resin sleeve, the intermediate outer periphery, and the small-diameter outer periphery of the metal sleeve, and the small-diameter inner periphery of the resin sleeve. An anticorrosion sleeve characterized in that the circumference and the height of the large diameter outer circumference of the metal sleeve are matched.
1記載の防食スリーブ。2. The anticorrosion sleeve according to claim 1, wherein the metal sleeve is made of stainless steel.
項1記載の防食スリーブ。3. The anticorrosion sleeve according to claim 1, wherein the resin sleeve is made of a hard synthetic resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000117426A JP4033372B2 (en) | 2000-04-19 | 2000-04-19 | Anticorrosion sleeve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000117426A JP4033372B2 (en) | 2000-04-19 | 2000-04-19 | Anticorrosion sleeve |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001304487A true JP2001304487A (en) | 2001-10-31 |
JP4033372B2 JP4033372B2 (en) | 2008-01-16 |
Family
ID=18628745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000117426A Expired - Lifetime JP4033372B2 (en) | 2000-04-19 | 2000-04-19 | Anticorrosion sleeve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4033372B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005282587A (en) * | 2004-03-26 | 2005-10-13 | Tabuchi Corp | Removing device for anticorrosion sleeve |
JP2006046564A (en) * | 2004-08-06 | 2006-02-16 | Kitz Corp | Corrosion resistant sleeve |
JP2008089010A (en) * | 2006-09-29 | 2008-04-17 | Kitz Corp | Anticorrosion sleeve |
JP2009210109A (en) * | 2008-03-06 | 2009-09-17 | Cosmo Koki Co Ltd | Corrosion protective means for perforated part |
US8003181B2 (en) | 2004-06-29 | 2011-08-23 | Tabuchi Co., Ltd. | Anticorrosion sleeve |
JP2016217517A (en) * | 2015-05-26 | 2016-12-22 | 株式会社水道技術開発機構 | Branch part structure of fluid pipe |
JP2017194096A (en) * | 2016-04-19 | 2017-10-26 | 株式会社タブチ | Fitting device for snap core |
JP2019116911A (en) * | 2017-12-26 | 2019-07-18 | 株式会社タブチ | Water supply pipe corrosion proof kit, corrosion proof sleeve and installing jig for corrosion proof sleeve |
-
2000
- 2000-04-19 JP JP2000117426A patent/JP4033372B2/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005282587A (en) * | 2004-03-26 | 2005-10-13 | Tabuchi Corp | Removing device for anticorrosion sleeve |
JP4537743B2 (en) * | 2004-03-26 | 2010-09-08 | 株式会社タブチ | Anti-corrosion sleeve removal device |
US8003181B2 (en) | 2004-06-29 | 2011-08-23 | Tabuchi Co., Ltd. | Anticorrosion sleeve |
JP2006046564A (en) * | 2004-08-06 | 2006-02-16 | Kitz Corp | Corrosion resistant sleeve |
JP4531479B2 (en) * | 2004-08-06 | 2010-08-25 | 株式会社キッツ | Anticorrosion sleeve |
JP2008089010A (en) * | 2006-09-29 | 2008-04-17 | Kitz Corp | Anticorrosion sleeve |
JP2009210109A (en) * | 2008-03-06 | 2009-09-17 | Cosmo Koki Co Ltd | Corrosion protective means for perforated part |
JP2016217517A (en) * | 2015-05-26 | 2016-12-22 | 株式会社水道技術開発機構 | Branch part structure of fluid pipe |
JP2017194096A (en) * | 2016-04-19 | 2017-10-26 | 株式会社タブチ | Fitting device for snap core |
JP2019116911A (en) * | 2017-12-26 | 2019-07-18 | 株式会社タブチ | Water supply pipe corrosion proof kit, corrosion proof sleeve and installing jig for corrosion proof sleeve |
JP7129078B2 (en) | 2017-12-26 | 2022-09-01 | 株式会社タブチ | Installation jig for water pipe anti-corrosion kit and anti-corrosion sleeve |
Also Published As
Publication number | Publication date |
---|---|
JP4033372B2 (en) | 2008-01-16 |
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