JP4791033B2

JP4791033B2 - Corrosion-proof core mounting tool

Info

Publication number: JP4791033B2
Application number: JP2004367099A
Authority: JP
Inventors: 啓司重野
Original assignee: 株式会社日邦バルブ
Priority date: 2004-12-20
Filing date: 2004-12-20
Publication date: 2011-10-12
Anticipated expiration: 2024-12-20
Also published as: JP2006170396A

Description

本発明は、水道管に防食コアを取付けるために使用する取付け工具に関する。さらに詳細に言えば、その工具への防食コアの装着が簡単に行うことができる取付け工具に関する。 The present invention relates to an attachment tool used for attaching an anticorrosion core to a water pipe. More specifically, the present invention relates to an installation tool that can easily attach the anticorrosion core to the tool.

水道本管から分岐管へ分岐するために例えばサドル分水栓を本管に取り付け、該分水栓を貫通して穿孔工具を挿入して本管に分岐用の穴を明ける。そしてこの穴及びその周囲における管の腐食を防止するために、例えば特許第３４６４８２５号に開示された防食コアをこの穴に取り付ける。この防食コアを取り付けるために専用の取付け工具が使用され、同特許にその先行技術の一例が開示されている。以下、図８を参照してこの先行技術に係る取付け工具を簡単に説明する。 In order to branch from the main water pipe to the branch pipe, for example, a saddle water faucet is attached to the main pipe, and a drilling tool is inserted through the water faucet to make a branching hole in the main pipe. And in order to prevent corrosion of the pipe | tube in this hole and its circumference | surroundings, the anticorrosion core disclosed by patent 3464825 is attached to this hole, for example. A dedicated mounting tool is used to mount the anticorrosion core, and the patent discloses an example of the prior art. Hereinafter, the mounting tool according to this prior art will be briefly described with reference to FIG.

図８は、特許第３４６４８２５号に開示された取付け工具８１を用いて防食コア７５を水道の本管７１に明けた穴７２に取付ける方法を示している。符号７３は本管７１に取付けたサドル分水栓であり、その下部通水路７４の部分のみを図示してある。コア７５は工具８１に装着された状態で分水栓７３内を貫通して挿入され、穴７２に取付けられる。 FIG. 8 shows a method of attaching the anticorrosion core 75 to the hole 72 opened in the water main 71 using the attachment tool 81 disclosed in Japanese Patent No. 3464825. Reference numeral 73 denotes a saddle water faucet attached to the main pipe 71, and only the lower water passage 74 is shown. The core 75 is inserted through the water faucet 73 while being attached to the tool 81, and is attached to the hole 72.

工具８１は工具本体８２と、本体８２の下端部にネジ結合で取付けられるヘッド８９とで構成されている。工具本体８２は上側から径の大きい順に大径部８３、中径部８４、小径部８５が形成され、さらに、小径部８５と中径部８４との間の第１傾斜部８６、中径部８４の上側の第２傾斜部８７、さらに大径部８３に繋がる第３傾斜部８８とを備えている（大径部８３より上の部分の図示は省略してある。）。コア７５を工具８１に装着するには、先ずヘッド８９を工具本体８２から取外し、コア７５を工具本体８２へ下端側から図示のように工具本体８２の装着し、ヘッド８９を工具本体８２に取り付ける。コア７５の径方向内方へ鉤状に曲がった下端部７９の内径がヘッド８９の外形より小さいので、コア７５は工具から外れない。 The tool 81 includes a tool main body 82 and a head 89 attached to the lower end portion of the main body 82 by screw connection. The tool body 82 is formed with a large diameter portion 83, a medium diameter portion 84, and a small diameter portion 85 in descending order of diameter from the upper side, and further, a first inclined portion 86 between the small diameter portion 85 and the medium diameter portion 84, and a medium diameter portion. 84, a second inclined portion 87 on the upper side of 84, and a third inclined portion 88 connected to the large-diameter portion 83 (the portion above the large-diameter portion 83 is not shown). In order to attach the core 75 to the tool 81, first, the head 89 is removed from the tool body 82, the core 75 is attached to the tool body 82 from the lower end side as shown in the figure, and the head 89 is attached to the tool body 82. . Since the inner diameter of the lower end 79 bent in a hook shape inward in the radial direction of the core 75 is smaller than the outer shape of the head 89, the core 75 does not come off the tool.

この状態で工具８１を分水栓７３内を貫通して挿入すると、コア７５の下側筒部７８が穴７２に嵌り、鍔部７６が穴７２の周囲で本管７１上に載る。コア７５の内径は下方へ向かって漸次径が小さくなっており、工具８１をさらに押し下げると、先ずコア７５の下端部７９が工具本体８２の第１傾斜部８６により、次いで中径部８４により外方へ押し広げられ、コア７５は抜止めされる。また、コア７５の下側筒部７８も中径部８４により外方へ広げられ、その外周上に取付けられたゴムなどのシール部材７８ａが穴７２の内周へ圧縮状態で押付けられる。さらに工具８１を押し下げると、工具本体８２の第２傾斜部８７によりコア７５の上側筒部７７が押し広げられ、その外周上に取付けられたゴム製のシール部材７７ａが分水栓７３の下部通水路７４の内周面に圧縮状態で押付けられる。コア７５の上端が工具本体８２の第３傾斜部に当たると、この傾斜は急なため抵抗が大きくなり、作業者に取付け作業完了を知らせる。工具本体８２の中径部８４の外径はヘッド８９の外径より大きく、コア７５の内径は丈方向全ての位置でヘッド８９の外径より大きくなっており、この状態で工具８１を引くと、穴７２と分水栓７３に取付けられたコア７５をその位置に残し、コア７５に邪魔されることなく、工具８１だけを引抜くことができる。コアの取付けを行う度に以上の操作を繰返すこととなる。 When the tool 81 is inserted through the water faucet 73 in this state, the lower cylindrical portion 78 of the core 75 is fitted into the hole 72, and the flange portion 76 is placed on the main pipe 71 around the hole 72. The inner diameter of the core 75 gradually decreases downward, and when the tool 81 is further pushed down, the lower end 79 of the core 75 is first removed by the first inclined portion 86 of the tool body 82 and then by the intermediate diameter portion 84. The core 75 is prevented from being pulled out. The lower cylindrical portion 78 of the core 75 is also expanded outward by the medium diameter portion 84, and a seal member 78a such as rubber attached on the outer periphery thereof is pressed against the inner periphery of the hole 72 in a compressed state. When the tool 81 is further pushed down, the upper cylindrical portion 77 of the core 75 is pushed and expanded by the second inclined portion 87 of the tool body 82, and a rubber seal member 77 a attached on the outer periphery of the upper cylindrical portion 77 passes through the lower portion of the water faucet 73. It is pressed against the inner peripheral surface of the water channel 74 in a compressed state. When the upper end of the core 75 hits the third inclined portion of the tool main body 82, the inclination is steep, so that the resistance increases, and the operator is informed of the completion of the installation work. The outer diameter of the medium diameter portion 84 of the tool body 82 is larger than the outer diameter of the head 89, and the inner diameter of the core 75 is larger than the outer diameter of the head 89 at all positions in the length direction. The core 75 attached to the hole 72 and the water faucet 73 is left in that position, and only the tool 81 can be pulled out without being disturbed by the core 75. The above operation is repeated every time the core is attached.

特許第３４６４８２５号特許公報Japanese Patent No. 3464825

ところで上記従来の取り付け工具では、コアを工具に装着する度に先ずヘッドを工具本体から取外し、コアの装着後にヘッドを再度工具本体に取付ける作業が必要となり、コアの工具への装着に手間と時間が掛かる。 By the way, with the conventional mounting tool described above, it is necessary to first remove the head from the tool body every time the core is mounted on the tool, and then mount the head to the tool body again after mounting the core. It takes.

本願発明は上記従来の取付け工具の問題点に鑑みなされたものであり、防食コアを簡単に短時間に装着することのできる、防食コアの取付け用工具を提供することをその課題とする。 This invention is made in view of the problem of the said conventional attachment tool, and makes it the subject to provide the tool for attachment of the anticorrosion core which can mount | wear with an anticorrosion core easily in a short time.

上記課題を解決するために本発明の水道管に防食コアを取付けるために使用する取付け工具においては、その取付け工具を軸状の工具本体と、該工具本体に取り付けられ、弾性的に縮径可能な取付けリングとで構成した。工具本体は、水道管に取付けるために防食コアを拡径するように作用する作用部と、該作用部の一端側に連続して形成されたリング取付け部とを備えている。取付けリングは弾性を有するプラスチック製で、リング取付け部に取付けられるリング部と、該リング部から工具本体の作用部側へ向かって伸び、作用部側へ向かうにつれて径が大きくなる周壁部とを備えている。取付けリングはさらに、工具本体の軸方向にリング部から周壁部の端部まで延びる1つの切欠を備え、自由状態において周壁部の内周と工具本体の外周との間には隙間が設けられている。 In order to solve the above problems, the mounting tool used for mounting the anticorrosion core to the water pipe of the present invention is attached to the shaft-shaped tool body and the tool body, and can be elastically reduced in diameter. With a simple mounting ring. The tool body includes an action portion that acts to expand the diameter of the anticorrosion core for attachment to the water pipe, and a ring attachment portion that is continuously formed on one end side of the action portion. The mounting ring is made of plastic having elasticity, and includes a ring portion that is attached to the ring mounting portion, and a peripheral wall portion that extends from the ring portion toward the working portion side of the tool body and increases in diameter toward the working portion side. ing. The mounting ring further includes one notch extending in the axial direction of the tool body from the ring part to the end of the peripheral wall part, and in a free state, a gap is provided between the inner periphery of the peripheral wall part and the outer periphery of the tool body. Yes.

本発明においては上記の通りの構成を採用したので、防食コアを取付け工具に装着するには、防食コアを取付け工具に嵌め、軸方向に移動させながら取付けリングを縮径させてそれを乗越えさせるだけで良く、他の作業は一切必要ないので、作業がきわめて簡単で、作業効率が高くなる。 In the present invention, since the configuration as described above is adopted, in order to attach the anticorrosion core to the attachment tool, the anticorrosion core is fitted to the attachment tool, and the attachment ring is reduced in diameter while moving in the axial direction to get over it. Since no other work is required, the work is extremely simple and the work efficiency is increased.

以下、図面を参照して本発明の実施の形態について説明する。先ず図１乃至図３を参照して本発明の第１の実施の形態に係る取付け工具１を説明する。図１は取付け工具１の側断面図で、これに装着する防食コアの側断面図と一緒に示してある。図２は防食コアを取付け工具に装着した状態を示し、図３は取付け工具を構成する取付けリングの一例を示す図である。 Embodiments of the present invention will be described below with reference to the drawings. First, an installation tool 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a side sectional view of the mounting tool 1 and is shown together with a side sectional view of the anticorrosion core to be attached thereto. FIG. 2 shows a state in which the anticorrosion core is attached to the attachment tool, and FIG. 3 is a view showing an example of an attachment ring constituting the attachment tool.

図１において、取付け工具１は工具本体２と取付けリング１５とで構成される。工具本体２は、前述の従来例と同様に略円柱状の部材で大径部３、中径部４、小径部５、第１傾斜部６、第２傾斜部７、第３傾斜部８を備えている。そしてこの工具本体２は小径部５の下側にさらに第４傾斜部９を経て小径部５より径の小さいリング取付け部１０を備え、その取付け部１０の丈方向略中央に取付け溝１１が形成されている。 In FIG. 1, the mounting tool 1 includes a tool body 2 and a mounting ring 15. The tool body 2 is a substantially cylindrical member as in the above-described conventional example, and includes a large diameter portion 3, a medium diameter portion 4, a small diameter portion 5, a first inclined portion 6, a second inclined portion 7, and a third inclined portion 8. I have. The tool body 2 further includes a ring attachment portion 10 having a diameter smaller than that of the small diameter portion 5 via the fourth inclined portion 9 below the small diameter portion 5, and an attachment groove 11 is formed at a substantially central portion in the length direction of the attachment portion 10. Has been.

図３は取付けリング１５を示し、（イ）は断面図、（ロ）は底面図である。リング１５は例えばプラスチックなどで作られ、円環の一部を切欠いた形をして、その外周側は丈の略中央部が径方向外方へ向かって凸になっている。このリング１５は、工具本体２の取付け溝１１に図１に示す如く取り付けられ、自由状態ではリング１５の内周と溝１１の底部との間に隙間が存在する。リング１５は外方から力が加わると弾性変形して径が縮小し、外力が除かれると元に戻る。このリング１５は必要に応じて工具本体２から取外すことができる。 FIG. 3 shows the mounting ring 15, (A) is a cross-sectional view, and (B) is a bottom view. The ring 15 is made of, for example, plastic, and has a shape in which a part of the ring is cut out, and the outer peripheral side has a substantially central portion of the length protruding outward in the radial direction. The ring 15 is attached to the attachment groove 11 of the tool body 2 as shown in FIG. 1, and there is a gap between the inner periphery of the ring 15 and the bottom of the groove 11 in a free state. The ring 15 is elastically deformed to reduce its diameter when a force is applied from the outside, and returns to its original state when the external force is removed. The ring 15 can be removed from the tool body 2 as necessary.

図１の取付け工具１の下方に示されているのは防食コア２１の断面図である。この防食コア２１は前述の従来例で示したコアとは下端部の形状において若干異なるが、これは本発明の取付け工具の構成に由来するものではなく、従来例で示したコアの取付けに本発明の取付け工具を使用できることは勿論である。また、その下端部の形状の相違も本質的なものではない。このコア２１の構成は従来例のコアの構成の説明から容易に理解できるので、その詳細な説明は省略する。 Shown below the attachment tool 1 in FIG. 1 is a cross-sectional view of the anticorrosion core 21. The anticorrosion core 21 is slightly different from the core shown in the above-described conventional example in the shape of the lower end portion. However, this is not derived from the configuration of the mounting tool of the present invention, and is not used for the core mounting shown in the conventional example. Of course, the inventive mounting tool can be used. Moreover, the difference in the shape of the lower end is not essential. Since the structure of the core 21 can be easily understood from the description of the structure of the core of the conventional example, the detailed description thereof is omitted.

図２は取付け工具１にコア２１を装着した状態を示す断面図である。コア２１は従来例と同じく鍔部２２、上側筒部２３、下側筒部２４を備え、その貫通孔２６は下側に向かって径が漸次小さくなるようにテーパ状になっている。また、下側筒部２４の下端部２５は内周側が内側へ突出している。貫通孔２６の径は上側筒部２３において工具本体２の中径部４の外径より大きく、下側筒部２４において小径部５の外径より大きくなっているが、下端部２５の内方へ突出した部分の最小径は、自由状態での取付けリング１５の外径より小さい。しかし前述の如くリング１５には切欠き１６があり、力が加わると縮径するので、下端部２５をしてリング１５を乗越えさせ、図示の如くコア２１を工具１に装着することができる。下端部２５がリング１５を乗越えるとリング１５は元の状態に戻るので、コア２１が工具１から外れることはない。 FIG. 2 is a cross-sectional view showing a state where the core 21 is attached to the attachment tool 1. The core 21 includes a flange portion 22, an upper cylindrical portion 23, and a lower cylindrical portion 24 as in the conventional example, and the through hole 26 is tapered so that its diameter gradually decreases toward the lower side. Further, the inner peripheral side of the lower end portion 25 of the lower cylindrical portion 24 protrudes inward. The diameter of the through hole 26 is larger than the outer diameter of the medium diameter portion 4 of the tool body 2 in the upper cylindrical portion 23 and larger than the outer diameter of the small diameter portion 5 in the lower cylindrical portion 24. The minimum diameter of the protruding portion is smaller than the outer diameter of the mounting ring 15 in the free state. However, as described above, the ring 15 has the notch 16 and the diameter is reduced when a force is applied. Therefore, the core 21 can be mounted on the tool 1 as shown in the figure by lowering the lower end 25 and getting over the ring 15. When the lower end 25 gets over the ring 15, the ring 15 returns to its original state, so that the core 21 does not come off from the tool 1.

工具１に取付けたコア２１を水道管に取付ける操作は、前述した従来例と略同様である。従来例に関して説明したようにコア２１を装着した工具１を分水栓に挿通し、コア２１の下側筒部２４を水道管に明けた穴に嵌め、さらに工具１を押し下げて行くと、コアの下端部２５は工具本体２の第４傾斜部９、小径部５、第１傾斜部６、中径部４により広げられ、下側筒部２４は中径部４により、上側筒部２３は第２傾斜部７により拡径される。すなわちこの実施の形態では、工具本体２の第4傾斜部から第3傾斜部に至る部分が防食コア２１の各部分を拡径する作用をする作用部で、その下側にリング取付け部１０が設けられていることとなる。そして工具本体２の中径部４の外径は自由状態での取付けリング１５の外径より大きいので、拡径後のコア２１は工具１の抜取りの妨げにはならない。 The operation of attaching the core 21 attached to the tool 1 to the water pipe is substantially the same as the conventional example described above. As described with respect to the conventional example, the tool 1 with the core 21 is inserted into the water faucet, the lower cylindrical portion 24 of the core 21 is fitted into the hole opened in the water pipe, and the tool 1 is further pushed down. The lower end portion 25 of the tool body 2 is widened by the fourth inclined portion 9, the small diameter portion 5, the first inclined portion 6, and the intermediate diameter portion 4, the lower cylindrical portion 24 is expanded by the intermediate diameter portion 4, and the upper cylindrical portion 23 is The diameter is increased by the second inclined portion 7. That is, in this embodiment, the part from the fourth inclined part to the third inclined part of the tool body 2 is an action part that acts to expand the diameter of each part of the anticorrosion core 21, and the ring mounting part 10 is below the action part. It will be provided. Since the outer diameter of the middle diameter portion 4 of the tool body 2 is larger than the outer diameter of the mounting ring 15 in the free state, the core 21 after the diameter expansion does not hinder the removal of the tool 1.

図４は図３に示した取付けリング１５に代わって使用可能なリングの各種形状を示す図であり、それぞれ（イ）は断面図、（ロ）は底面図である。図には4種類示したが、この形状に限定されない。材料はプラスチックに限定されないが、弾性を有すること、一部を切欠いて工具本体２の溝１０への着脱が可能であること、自由状態においてその内周と取付け溝の底部との間に隙間があり、その外径が装着するコアの下端部の最小内径部の内径より大きいことなどが必要であることはリング１５の場合と同じである。これらの取付けリングは形状が簡単で、きわめて安価に製造できる。 4A and 4B are views showing various shapes of the ring that can be used in place of the attachment ring 15 shown in FIG. 3, wherein FIG. 4A is a sectional view and FIG. 4B is a bottom view. Although four types are shown in the figure, it is not limited to this shape. The material is not limited to plastic, but has elasticity, can be partly cut and removed from the groove 10 of the tool body 2, and there is a gap between its inner periphery and the bottom of the mounting groove in a free state. As in the case of the ring 15, the outer diameter needs to be larger than the inner diameter of the minimum inner diameter portion of the lower end portion of the core to be mounted. These mounting rings are simple in shape and can be manufactured very inexpensively.

図５乃至図７は第２の実施の形態を示し、それぞれ第１の形態に関する図１、２、３に対応するものであり、この取付け工具３１も工具本体３２と取付けリング４３とで構成される。工具本体３１の形状は第１の実施の形態でのそれと細部において若干の差異はあるが、基本形状は同じである。すなわち、工具本体３２は大径部３３、中径部３４、小径部３５、第１傾斜部３６、第２傾斜部３７、第３傾斜部３８、第４傾斜部３９、小径部３５よりさらに小径のリング取付け部４０を備え、その取付け部４０に取付け溝４１が形成され、この取付け溝４１に取付けリング４３が図５に示すように取付けられる。 FIGS. 5 to 7 show a second embodiment, which corresponds to FIGS. 1, 2, and 3 relating to the first embodiment, respectively, and this mounting tool 31 is also composed of a tool body 32 and a mounting ring 43. FIG. The The shape of the tool main body 31 is slightly different from that of the first embodiment in detail, but the basic shape is the same. That is, the tool body 32 has a smaller diameter than the large diameter portion 33, the medium diameter portion 34, the small diameter portion 35, the first inclined portion 36, the second inclined portion 37, the third inclined portion 38, the fourth inclined portion 39, and the small diameter portion 35. The ring mounting portion 40 is provided, and a mounting groove 41 is formed in the mounting portion 40, and a mounting ring 43 is mounted in the mounting groove 41 as shown in FIG.

取付けリング４３は図７の（イ）縦断面図及び（ロ）底面図に示されるように、第１の実施の形態で使用したものとは異なりカップ形をしている。本明細書においてはこのような形状のものを含めて「リング」と表現する。すなわち、工具本体に取付けられ、取付け工具に装着した防食コアが外れないように保持する作用をする部材を、その具体的な形状にとらわれず全て「取付けリング」と称することとする。 The mounting ring 43 has a cup shape, unlike the one used in the first embodiment, as shown in FIG. 7 (a) longitudinal sectional view and (b) bottom view. In this specification, the term “ring” includes such a shape. That is, all the members that are attached to the tool body and hold the anticorrosion core attached to the attachment tool so as not to come off are referred to as “attachment rings” regardless of their specific shapes.

取付けリング４３は前述のようにカップ形をしており、底部４４と底部４４の外周部から上方へ、上に向かうに従って径が大きくなる周壁部４５とを備えている。底部４４の中央には穴４６が明いており、この穴４６の径は工具本体３２のリング取付け部４０に形成された溝４１の底部の径より若干大きくなっている。また、リング４３には底部４４と周壁部４５に渡って切欠き４７が１つ形成されている。この切欠き４７を利用してリング４３の底部４４を工具本体３２の溝４１に嵌め、図５に示すようにリング４３を工具本体３２に取付けることができる。すなわち底部４４はリング取付け部４０に取付けられるリング部４４ａを構成する。取付けた際には穴４６の内周と溝４１の底部との間に隙間が形成される。また、自由状態において周壁部４５の内周と工具本体３２の外周との間には隙間が設けられている。そして、力が加わることによりリング４３は縮径し、力が除かれると元に戻る。 The attachment ring 43 has a cup shape as described above, and includes a bottom portion 44 and a peripheral wall portion 45 whose diameter increases upward from the outer peripheral portion of the bottom portion 44 upward. A hole 46 is formed in the center of the bottom 44, and the diameter of the hole 46 is slightly larger than the diameter of the bottom of the groove 41 formed in the ring mounting portion 40 of the tool body 32. The ring 43 is formed with one notch 47 across the bottom 44 and the peripheral wall 45. Using this notch 47, the bottom 44 of the ring 43 is fitted into the groove 41 of the tool body 32, and the ring 43 can be attached to the tool body 32 as shown in FIG. That is, the bottom portion 44 constitutes a ring portion 44 a that is attached to the ring attachment portion 40. When attached, a gap is formed between the inner periphery of the hole 46 and the bottom of the groove 41. In a free state, a gap is provided between the inner periphery of the peripheral wall 45 and the outer periphery of the tool body 32. When the force is applied, the diameter of the ring 43 is reduced, and when the force is removed, the ring 43 returns.

図５で工具３１の下方に示されたのは、工具３１に装着される防食コア５１の断面図である。このコア５１は第１の実施の形態に関連して説明したコア２１とは若干形状が異なり、従来例に関連して説明したコアと略同じ形状をしており、鍔部５２、上側筒部５３、下側筒部５４、下端部５５を備え、内部の貫通孔は下側に向かうに連れて径が小さくなるようにテーパ状になっており、下端部５５は内側に向かって鉤状に曲がっている。 FIG. 5 shows a cross-sectional view of the anticorrosion core 51 attached to the tool 31 below the tool 31. The core 51 is slightly different in shape from the core 21 described in relation to the first embodiment, and has substantially the same shape as the core described in relation to the conventional example. 53, a lower cylindrical portion 54, and a lower end portion 55, and the inner through hole is tapered so that the diameter becomes smaller toward the lower side, and the lower end portion 55 has a bowl shape toward the inner side. bent.

このコア５１も従来例或いは第１の実施の形態で説明したコアと同様に、工具３１の下端部４０側から工具３１に嵌め込み、取付けリング４３を縮径させてそれを乗越えてその上側に移動させると、リング４３が元の位置に戻る。この状態でコア５１の下端部５５の最小内径部５５ａがリング４３の周壁部４５の上端面上に載り、支持される。これによりコア５１が工具３１から外れなくなる。コア５１の水道管の穴への取付け方についての説明は省略する。この取付けリング４３の場合、周壁部４５が設けられており、コア５１を装着する際にその周壁部４５が底部４４において支持された片持梁のように変形するので、その変形がきわめて柔軟で抵抗が少ない。したがって、コア装着時の磨耗がきわめて少ないという利点がある。 Similarly to the core described in the conventional example or the first embodiment, this core 51 is fitted into the tool 31 from the lower end portion 40 side of the tool 31, the diameter of the mounting ring 43 is reduced, it is moved over and moved over it. Then, the ring 43 returns to the original position. In this state, the minimum inner diameter portion 55 a of the lower end portion 55 of the core 51 is placed on and supported by the upper end surface of the peripheral wall portion 45 of the ring 43. As a result, the core 51 cannot be detached from the tool 31. A description of how to attach the core 51 to the hole of the water pipe is omitted. In the case of the mounting ring 43, the peripheral wall portion 45 is provided, and when the core 51 is mounted, the peripheral wall portion 45 is deformed like a cantilever supported by the bottom portion 44, so that the deformation is extremely flexible. Less resistance. Therefore, there is an advantage that the wear when the core is mounted is extremely small.

上記において具体的に二つの実施の形態について説明したが、工具の工具本体の形状及び取付けリングの形状或いはそれらの取付け工具を使用して取付ける防食コアの形状が上に説明したものに限定されるものではない。取付ける防食コアの形状に合わせて工具本体、取付けリングの形状、寸法等は適宜設定される。また、取付ける防食リングは上に説明したように水道管の穴と分水栓の下部通水路の両方へ密着させるタイプに限定されるものではなく、例えば水道管の穴のみへ密着させるタイプのものにも本発明は適用可能であり、取付ける防食コアの形状に適合するように工具の具体的形状は決定される。 Although two embodiments have been specifically described above, the shape of the tool body of the tool and the shape of the mounting ring or the shape of the anticorrosion core to be mounted using those mounting tools are limited to those described above. It is not a thing. In accordance with the shape of the anticorrosion core to be attached, the shape and dimensions of the tool body and the attachment ring are appropriately set. In addition, the anticorrosion ring to be attached is not limited to the type that adheres to both the hole of the water pipe and the lower water passage of the water faucet, as described above, but, for example, the type that adheres only to the hole of the water pipe In addition, the present invention is applicable, and the specific shape of the tool is determined so as to match the shape of the anticorrosion core to be attached.

本発明の第１の実施の形態に係る取付け工具と防食コアとを示す縦断面図である。It is a longitudinal cross-sectional view which shows the attachment tool and anticorrosion core which concern on the 1st Embodiment of this invention. 図１の取付け工具に防食コアを装着した状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which mounted | wore the anticorrosion core with the attachment tool of FIG. 第１の実施の形態で使用する取付けリングを示す図である。It is a figure which shows the attachment ring used in 1st Embodiment. 第１の実施の形態で使用できる他の取付けリングの例を示す図である。It is a figure which shows the example of the other attachment ring which can be used by 1st Embodiment. 本発明の第２の実施の形態に係る取付け工具と防食コアとを示す縦断面図である。It is a longitudinal cross-sectional view which shows the attachment tool and anticorrosion core which concern on the 2nd Embodiment of this invention. 図５の取付け工具に防食コアを装着した状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which mounted | wore the anticorrosion core with the attachment tool of FIG. 第２の実施の形態で使用する取付けリングを示す図である。It is a figure which shows the attachment ring used in 2nd Embodiment. 取付け工具の従来例及びそれを用いて防食コアを取付ける方法を示す縦断面図である。It is a longitudinal cross-sectional view which shows the method of attaching the anticorrosion core using the prior art example of an attachment tool, and it.

符号の説明Explanation of symbols

１、３１：取付け工具２、３２：工具本体３、３３：大径部４、３４：中径部５、３５：小径部６、３６：第１傾斜部７、３７：第２傾斜部８、３８：第３傾斜部９、３９：第４傾斜部１０、４０：リング取付け部１１、４１：溝１５、４３：取付けリング１６、４７：切欠き４４：底部４５：周壁部 DESCRIPTION OF SYMBOLS 1, 31: Installation tool 2, 32: Tool main body 3, 33: Large diameter part 4, 34: Medium diameter part 5, 35: Small diameter part 6, 36: 1st inclination part 7, 37: 2nd inclination part 8, 38: 3rd inclination part 9, 39: 4th inclination part 10, 40: Ring attachment part 11, 41: Groove 15, 43: Attachment ring 16, 47: Notch 44: Bottom part 45: Circumferential wall part

Claims

水道管に防食コアを取付けるために使用する取付け工具において、前記取付け工具は、軸状の工具本体と、該工具本体に取り付けられ、弾性的に縮径可能な取付けリングとで構成され、前記工具本体は、水道管に取付けるために前記防食コアを拡径するように作用する作用部と、該作用部の一端側に連続して形成されたリング取付け部とを備え、前記取付けリングは弾性を有するプラスチック製で、前記リング取付け部に取付けられるリング部と、該リング部から前記工具本体の作用部側へ向かって伸び、前記作用部側へ向かうにつれて径が大きくなる周壁部とを備え、前記取付けリングはさらに、前記工具本体の軸方向に前記リング部から前記周壁部の端部まで延びる1つの切欠を備え、自由状態において前記周壁部の内周と前記工具本体の外周との間には隙間が設けられていることを特徴とする、取付け工具。 An attachment tool used for attaching an anticorrosion core to a water pipe, wherein the attachment tool is composed of a shaft-like tool body and an attachment ring which is attached to the tool body and can be elastically reduced in diameter. The main body includes an action portion that acts to expand the diameter of the anticorrosion core for attachment to a water pipe, and a ring attachment portion that is continuously formed on one end side of the action portion, and the attachment ring is elastic. A ring part attached to the ring attachment part, and a peripheral wall part extending from the ring part toward the action part side of the tool body and increasing in diameter toward the action part side, The mounting ring further includes one notch extending in the axial direction of the tool main body from the ring portion to the end of the peripheral wall portion, and in the free state, the inner periphery of the peripheral wall portion and the tool main body A mounting tool, wherein a gap is provided between the outer periphery and the outer periphery.

請求項1記載の取付け工具において、前記リング取付け部には、軸方向所定の位置で円周方向に延びる円周溝が形成され、前記リング部は前記円周溝に配置されることを特徴とする、取付け工具。The mounting tool according to claim 1, wherein the ring mounting portion is formed with a circumferential groove extending in a circumferential direction at a predetermined position in the axial direction, and the ring portion is disposed in the circumferential groove. Do the installation tool.