JP2022054156A - Pipe joint and water heater - Google Patents

Pipe joint and water heater Download PDF

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JP2022054156A
JP2022054156A JP2020161194A JP2020161194A JP2022054156A JP 2022054156 A JP2022054156 A JP 2022054156A JP 2020161194 A JP2020161194 A JP 2020161194A JP 2020161194 A JP2020161194 A JP 2020161194A JP 2022054156 A JP2022054156 A JP 2022054156A
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press
pipe
fitting
flange
fitted
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勉 本間
Tsutomu Honma
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Paloma Co Ltd
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Paloma Co Ltd
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Abstract

To provide a pipe joint that allows easy check of a press-fitting state of a male side pipe member into a female side pipe member, and allows quick inspection to improve assembly efficiency, and provide a water heater.SOLUTION: A pipe joint 25 comprises: an insertion pipe part 15 that is used between a water side member 5 and a connection member 4, where the outer peripheral surface of the water side member 5 is formed in a stepped shape having a small diameter part 27 at the tip and a large diameter part 26 at the base end side; and a flange cap 30 including a press-fitting pipe part 31 that is press-fitted into the insertion pipe part 15 from the tip side thereof, and a flange part 32 provided around the base end of the press-fitting pipe part 31, wherein with the press-fitting pipe part 31 inserted into the insertion pipe part 15, a mounting groove 35 on which an O-ring 36 is externally fitted to is formed between the large diameter part 26 and the flange part 32. On the tip side end surface of the small diameter part 26, an annular ridge part 29 is projected, on the other hand, on the surface of the flange part 32 facing the small diameter part 27, a peripheral groove 34 into which the ridge part 29 is fitted in the press-fitting state of the press-fitting pipe part 31 is formed.SELECTED DRAWING: Figure 2

Description

本発明は、給湯器等の流体制御機器において、配管同士を接続するために用いられる管継手と、当該管継手を用いた給湯器とに関する。 The present invention relates to a pipe joint used for connecting pipes to each other in a fluid control device such as a water heater, and a water heater using the pipe joint.

給湯器等の流体制御機器においては、流体を熱交換器等の構成部間で受け渡しするために、配管同士が接続される。この接続は、例えば特許文献１に開示されるように、ソケット部材（メス側管部材）に設けた受け口部に、プラグ部材（オス側管部材）を挿入することで行われる。
プラグ部材の外周には、シール性を保つために、Ｏリングが外装されている。よって、プラグ部材には、Ｏリングが外装されるＯリング溝が形成されるが、ここではプラグ部材を、先端外周にＯリング溝が形成される挿入脚部（差し込み管部）と、Ｏリング溝の先端寄り壁面を形成するフランジを有する挿嵌体（フランジキャップ）とに分割し、挿入脚部に挿嵌体を圧入する構造を採用している。この構造により、Ｏリング溝の底面にパーティングラインが形成されることがなく、シール性の低下が防止可能となる。 In a fluid control device such as a water heater, pipes are connected to each other in order to transfer fluid between components such as a heat exchanger. This connection is made by inserting a plug member (male side tube member) into a receiving portion provided in the socket member (female side tube member), for example, as disclosed in Patent Document 1.
An O-ring is exteriorized on the outer circumference of the plug member in order to maintain the sealing property. Therefore, the plug member is formed with an O-ring groove on which the O-ring is exteriorized. Here, the plug member is provided with an insertion leg portion (insertion tube portion) in which an O-ring groove is formed on the outer periphery of the tip and an O-ring. A structure is adopted in which the insert is divided into an insert (flange cap) having a flange forming a wall surface near the tip of the groove, and the insert is press-fitted into the insertion leg. With this structure, a parting line is not formed on the bottom surface of the O-ring groove, and deterioration of the sealing property can be prevented.

特開２０１０－２８１３８２号公報Japanese Unexamined Patent Publication No. 2010-281382

上記特許文献１の管継手においては、挿入脚部への挿嵌体の圧入状態を外部から確認するのが難しく、検品に手間がかかって組み立て効率が低下するという問題があった。 In the pipe joint of Patent Document 1, it is difficult to confirm the press-fitting state of the inserted body into the insertion leg from the outside, and there is a problem that inspection is troublesome and assembly efficiency is lowered.

そこで、本発明は、メス側管部材へのオス側管部材の圧入状態を容易に確認でき、検品が迅速に行えて組み立て効率が向上する管継手及び給湯器を提供することを目的としたものである。 Therefore, an object of the present invention is to provide a pipe joint and a water heater that can easily confirm the press-fitting state of the male side pipe member into the female side pipe member, perform inspection quickly, and improve assembly efficiency. Is.

上記目的を達成するために、本発明のうち、第１の発明は、オス側管部材にメス側管部材を差込接続するための管継手であって、
前記オス側管部材が、
先端が小径部、基端側が大径部となる段付形状に外周面が形成される差し込み管部と、
前記差し込み管部にその先端側から圧入される圧入管部と、前記圧入管部の基端に周設されるフランジ部とを備えるフランジキャップと、からなり、
前記フランジキャップの前記圧入管部を前記差し込み管部に圧入した状態で、前記大径部と前記フランジ部との間にＯリングが外装される装着溝が形成される管継手であって、
前記差し込み管部の前記小径部の先端側端面には、環状の突条部が突設される一方、
前記フランジ部における前記小径部との対向面には、前記圧入管部の圧入状態で前記突条部が嵌合する周溝が形成されていることを特徴とする。
第１の発明の別の態様は、上記構成において、前記オス側管部材と前記メス側管部材とは、給湯器の給水側に設置されるものであって、前記差し込み管部の内部には、水量センサが収容され、前記圧入管部を前記差し込み管部に圧入した状態で、前記圧入管部の先端が前記水量センサのケーシングに当接して前記水量センサの移動を規制することを特徴とする。
上記目的を達成するために、本発明のうち、第２の発明は、給湯器であって、第１の発明の管継手を備えてなることを特徴とする。 In order to achieve the above object, the first invention of the present invention is a pipe joint for inserting and connecting a female side pipe member to a male side pipe member.
The male side pipe member
An insertion tube part with an outer peripheral surface formed in a stepped shape with a small diameter part at the tip and a large diameter part at the base end side,
It is composed of a press-fitting pipe portion to be press-fitted into the insertion pipe portion from the tip end side thereof, and a flange cap provided with a flange portion provided around the base end of the press-fitting pipe portion.
A pipe joint in which a mounting groove on which an O-ring is externally formed is formed between the large diameter portion and the flange portion in a state where the press-fitting pipe portion of the flange cap is press-fitted into the insertion pipe portion.
An annular ridge is provided on the distal end surface of the small diameter portion of the insertion tube portion, while the annular ridge portion is projected.
A peripheral groove into which the ridge portion is fitted is formed on the surface of the flange portion facing the small diameter portion in the press-fitted state of the press-fitting pipe portion.
In another aspect of the first invention, in the above configuration, the male side pipe member and the female side pipe member are installed on the water supply side of the water heater, and inside the insertion pipe portion. It is characterized in that, in a state where the water amount sensor is housed and the press-fitting pipe portion is press-fitted into the insertion pipe portion, the tip of the press-fitting pipe portion abuts on the casing of the water volume sensor to restrict the movement of the water volume sensor. do.
In order to achieve the above object, the second aspect of the present invention is a water heater, which comprises the pipe joint of the first invention.

本発明によれば、差し込み管部の突条部がフランジキャップの周溝に嵌合する際にクリック感が得られることで、メス側管部材へのオス側管部材の圧入状態を容易に確認できる。よって、検品が迅速に行えて組み立て効率が向上する。
本発明の別の態様によれば、圧入管部を差し込み管部に圧入した状態で、圧入管部の先端が水量センサのケーシングに当接して水量センサの移動を規制するので、フランジキャップを水量センサの位置決めに兼用した合理的な構成となる。よって、部品点数を減らすことができ、生産コスト及び管理コストの低減に繋がる。 According to the present invention, a click feeling is obtained when the ridge portion of the insertion tube portion fits into the peripheral groove of the flange cap, so that the press-fitting state of the male side tube member into the female side tube member can be easily confirmed. can. Therefore, inspection can be performed quickly and assembly efficiency is improved.
According to another aspect of the present invention, in a state where the press-fitting pipe portion is press-fitted into the insertion pipe portion, the tip of the press-fitting pipe portion abuts on the casing of the water amount sensor to restrict the movement of the water amount sensor. It has a rational configuration that also serves as the positioning of the sensor. Therefore, the number of parts can be reduced, which leads to a reduction in production cost and management cost.

給湯器及び管継手の説明図である。It is explanatory drawing of a water heater and a pipe joint. 図１のＡ－Ａ線断面図である。FIG. 3 is a cross-sectional view taken along the line AA of FIG. 差し込み管部の分解斜視図である。It is an exploded perspective view of the insertion tube part. 差し込み管部の下端部の拡大断面図である。It is an enlarged sectional view of the lower end part of the insertion tube part.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は、給湯器の給水側の一部を示し、図２は図１のＡ－Ａ線断面を示している。給湯器１は、筐体２の底板３に、外部の水道管と接続されるメス側管部材としての接続部材４と、筐体２内で接続部材４に接続されるオス側管部材としての水側部材５とを備えている。接続部材４と水側部材５とは樹脂製である。
水側部材５には、給水管６が接続され、給水管６は、図示しない熱交換器に接続される。接続部材４から供給された水は、水側部材５及び給水管６を通過して熱交換器に流れ、バーナの燃焼排気と熱交換されて、図示しない出湯管から出湯される。
接続部材４は、底板３に固定される固定板７と、固定板７から下向きに突出する水入口管８と、水入口管８へ直交状に接続される水抜き管９と、固定板７から筐体２内へ上向きに突出するソケット管１０とを有する。ソケット管１０の上端には、フランジ１１が周設されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a part of the water supply side of the water heater, and FIG. 2 shows a cross section taken along the line AA of FIG. The water heater 1 has a connecting member 4 as a female side pipe member connected to an external water pipe and a male side pipe member connected to the connecting member 4 in the housing 2 on the bottom plate 3 of the housing 2. It is provided with a water side member 5. The connecting member 4 and the water side member 5 are made of resin.
A water supply pipe 6 is connected to the water side member 5, and the water supply pipe 6 is connected to a heat exchanger (not shown). The water supplied from the connecting member 4 passes through the water side member 5 and the water supply pipe 6 and flows to the heat exchanger, is heat exchanged with the combustion exhaust of the burner, and is discharged from a hot water outlet pipe (not shown).
The connecting member 4 includes a fixing plate 7 fixed to the bottom plate 3, a water inlet pipe 8 protruding downward from the fixing plate 7, a drain pipe 9 orthogonally connected to the water inlet pipe 8, and a fixing plate 7. It has a socket tube 10 projecting upward from the housing 2. A flange 11 is provided around the upper end of the socket tube 10.

水側部材５は、上下方向に延びる筒状で、下部には、接続部材４のソケット管１０へ差込接続される差し込み管部１５が形成されている。差し込み管部１５の内部には、水量センサ１６が収容されている。水量センサ１６は、差し込み管部１５へ下方から挿入される筒状のケーシング１７と、ケーシング１７内で回転可能な水車１８とを含んでいる。差し込み管部１５の内部には、挿入されたケーシング１７の上端を係止させて位置決めする段部１９が形成されている。
差し込み管部１５内の上部には、流量を制御する水絞りバルブ２０が設けられている。差し込み管部１５の上側には、水絞りバルブ２０を動作させるステッピングモータ２１が設けられている。水絞りバルブ２０の下流側で差し込み管部１５の側面には、給水管６との接続口２２が設けられている。差し込み管部１５の外周において、下端よりやや上方には、ソケット管１０との接続状態でフランジ１１と当接する受けフランジ２３が形成されている。 The water-side member 5 has a tubular shape extending in the vertical direction, and an insertion pipe portion 15 that is inserted and connected to the socket pipe 10 of the connection member 4 is formed at the lower portion. A water amount sensor 16 is housed inside the insertion pipe portion 15. The water amount sensor 16 includes a cylindrical casing 17 that is inserted into the insertion pipe portion 15 from below, and a water wheel 18 that can rotate in the casing 17. Inside the insertion tube portion 15, a step portion 19 for locking and positioning the upper end of the inserted casing 17 is formed.
A water throttle valve 20 for controlling the flow rate is provided in the upper part of the insertion pipe portion 15. A stepping motor 21 for operating the water throttle valve 20 is provided on the upper side of the insertion pipe portion 15. A connection port 22 for connecting to the water supply pipe 6 is provided on the side surface of the insertion pipe portion 15 on the downstream side of the water throttle valve 20. On the outer periphery of the insertion tube portion 15, a receiving flange 23 that comes into contact with the flange 11 in a connected state with the socket tube 10 is formed slightly above the lower end.

そして、接続部材４のソケット管１０と、水側部材５の差し込み管部１５とは、管継手２５によって接続されている。
図３及び図４に示すように、差し込み管部１５において、受けフランジ２３の下方の外周面は、上側が大径部２６、下側が小径部２７となる段付形状となっている。大径部２６の内側で差し込み管部１５の内周面には、リング状の溝２８が形成されている。
小径部２７の下面には、小径部２７よりも小径となる環状の突条部２９が、小径部２７と同軸で下向きに突設されている。 The socket pipe 10 of the connecting member 4 and the insertion pipe portion 15 of the water side member 5 are connected by a pipe joint 25.
As shown in FIGS. 3 and 4, in the insertion pipe portion 15, the lower outer peripheral surface of the receiving flange 23 has a stepped shape in which the upper side is the large diameter portion 26 and the lower side is the small diameter portion 27. A ring-shaped groove 28 is formed on the inner peripheral surface of the insertion tube portion 15 inside the large diameter portion 26.
On the lower surface of the small diameter portion 27, an annular ridge portion 29 having a diameter smaller than that of the small diameter portion 27 is projected downward coaxially with the small diameter portion 27.

そして、差し込み管部１５には、下方からフランジキャップ３０が圧入される。このフランジキャップ３０は、差し込み管部１５に圧入される圧入管部３１と、圧入管部３１の下端に形成されるフランジ部３２とを有している。圧入管部３１の外周には、差し込み管部１５への圧入状態で溝２８に係止する突起３３，３３・・が、周方向に等間隔をおいて突設されている。圧入管部３１の上端は、差し込み管部１５への圧入状態で水量センサ１６のケーシング１７に下方から当接してケーシング１７の下方への移動を規制するようになっている。
フランジ部３２の上面で圧入管部３１の根元側には、差し込み管部１５への圧入状態で突条部２９が嵌合する周溝３４が形成されている。周溝３４の深さは、突条部２９の突出高さよりもやや大きくなっている。 Then, the flange cap 30 is press-fitted into the insertion tube portion 15 from below. The flange cap 30 has a press-fitting pipe portion 31 to be press-fitted into the insertion pipe portion 15 and a flange portion 32 formed at the lower end of the press-fitting pipe portion 31. On the outer periphery of the press-fitting pipe portion 31, protrusions 33, 33, ... The upper end of the press-fitting pipe portion 31 abuts from below on the casing 17 of the water amount sensor 16 in a state of being press-fitted into the insertion pipe portion 15 to restrict the downward movement of the casing 17.
On the upper surface of the flange portion 32, on the root side of the press-fitting pipe portion 31, a peripheral groove 34 into which the ridge portion 29 is fitted is formed in a state of being press-fitted into the insertion pipe portion 15. The depth of the peripheral groove 34 is slightly larger than the protruding height of the ridge portion 29.

フランジ部３２の外径は、差し込み管部１５の大径部２６と同径となっており、差し込み管部１５への圧入状態では、フランジ部３２の外周側上面が大径部２６の下面と対向し、小径部２７を底面とする横断面Ｕ字状の装着溝３５を形成する。この装着溝３５にＯリング３６が外装される。
こうしてフランジキャップ３０が圧入されることで、差し込み管部１５の軸線方向に引き抜く割り型を採用することができる。よって、装着溝３５にパーティングラインが形成されることがないため、シール性の低下を防止することができる。 The outer diameter of the flange portion 32 is the same as that of the large diameter portion 26 of the insertion pipe portion 15, and in the state of being press-fitted into the insertion pipe portion 15, the upper surface on the outer peripheral side of the flange portion 32 is the lower surface of the large diameter portion 26. A mounting groove 35 having a U-shaped cross section is formed so as to face each other and have a small diameter portion 27 as a bottom surface. The O-ring 36 is mounted on the mounting groove 35.
By press-fitting the flange cap 30 in this way, it is possible to adopt a split mold that is pulled out in the axial direction of the insertion pipe portion 15. Therefore, since the parting line is not formed in the mounting groove 35, it is possible to prevent the sealing property from being deteriorated.

以上の如く構成された管継手２５において、差し込み管部１５に水量センサ１６を挿入した状態で、フランジキャップ３０の圧入管部３１を差し込み管部１５に圧入する。すると、図４に示すように差し込み管部１５の小径部２７の端面にフランジキャップ３０のフランジ部３２が当接してフランジキャップ３０の圧入が停止する。このとき差し込み管部１５の突条部２９がフランジ部３２の周溝３４に嵌合するため、圧入時にクリック感が得られる。この圧入位置で圧入管部３１の突起３３も差し込み管部１５の溝２８に係止する。
また、フランジキャップ３０の圧入位置では、前述のように圧入管部３１が水量センサ１６のケーシング１７に当接してケーシング１７を位置決めする。 In the pipe joint 25 configured as described above, the press-fitting pipe portion 31 of the flange cap 30 is press-fitted into the insertion pipe portion 15 with the water amount sensor 16 inserted in the insertion pipe portion 15. Then, as shown in FIG. 4, the flange portion 32 of the flange cap 30 comes into contact with the end surface of the small diameter portion 27 of the insertion pipe portion 15, and the press-fitting of the flange cap 30 is stopped. At this time, since the ridge portion 29 of the insertion pipe portion 15 fits into the peripheral groove 34 of the flange portion 32, a click feeling can be obtained at the time of press fitting. At this press-fitting position, the protrusion 33 of the press-fitting pipe portion 31 is also locked in the groove 28 of the insertion pipe portion 15.
Further, at the press-fitting position of the flange cap 30, the press-fitting pipe portion 31 abuts on the casing 17 of the water amount sensor 16 to position the casing 17 as described above.

こうして差し込み管部１５とフランジキャップ３０とで形成された装着溝３５にＯリング３６を外装すれば、水側部材５の組み立ては終了する。
そして、水側部材５の下端を接続部材４のソケット管１０に挿入すれば、図２に示すようにソケット管１０の内側の受け面１２にフランジキャップ３０が当接すると共に、ソケット管１０のフランジ１１が差し込み管部１５の受けフランジ２３に当接して、ソケット管１０と差し込み管部１５とが接続されると共に、Ｏリング３６がソケット管１０の内周に当接してシールがなされる。フランジ１１と受けフランジ２３とは、図示しないクリップによって挟持される。 If the O-ring 36 is externally attached to the mounting groove 35 formed by the insertion pipe portion 15 and the flange cap 30, the assembly of the water side member 5 is completed.
Then, when the lower end of the water side member 5 is inserted into the socket pipe 10 of the connecting member 4, the flange cap 30 comes into contact with the receiving surface 12 inside the socket pipe 10 as shown in FIG. 2, and the flange of the socket pipe 10 is flanged. 11 abuts on the receiving flange 23 of the insertion tube portion 15, the socket tube 10 and the insertion tube portion 15 are connected, and the O-ring 36 abuts on the inner circumference of the socket tube 10 to seal. The flange 11 and the receiving flange 23 are sandwiched by a clip (not shown).

このように、上記形態の管継手２５及び給湯器１では、差し込み管部１５の小径部２７の先端側端面には、環状の突条部２９が突設される一方、フランジキャップ３０のフランジ部３２における小径部２７との対向面には、圧入管部３１の圧入状態で突条部２９が嵌合する周溝３４が形成されている。
この構成により、差し込み管部１５の突条部２９がフランジキャップ３０の周溝３４に嵌合する際にクリック感が得られることで、接続部材４への水側部材５の圧入状態を容易に確認できる。よって、検品が迅速に行えて組み立て効率が向上する。 As described above, in the pipe joint 25 and the water heater 1 of the above-described embodiment, the annular ridge portion 29 is projected from the tip end surface of the small diameter portion 27 of the insertion pipe portion 15, while the flange portion of the flange cap 30 is provided. On the surface of the 32 facing the small diameter portion 27, a peripheral groove 34 into which the ridge portion 29 fits in the press-fitted state of the press-fitting pipe portion 31 is formed.
With this configuration, a click feeling is obtained when the ridge portion 29 of the insertion pipe portion 15 is fitted into the peripheral groove 34 of the flange cap 30, so that the water side member 5 can be easily press-fitted into the connection member 4. You can check it. Therefore, inspection can be performed quickly and assembly efficiency is improved.

特に、差し込み管部１５の内部には、水量センサ１６が収容され、圧入管部３１を差し込み管部１５に圧入した状態で、圧入管部３１の先端が水量センサ１６のケーシング１７に当接して水量センサ１６の移動を規制する。
よって、フランジキャップ３０を水量センサ１６の位置決めに兼用した合理的な構成となるため、部品点数を減らすことができ、生産コスト及び管理コストの低減に繋がる。 In particular, the water amount sensor 16 is housed inside the insertion pipe portion 15, and the tip of the press-fitting pipe portion 31 comes into contact with the casing 17 of the water amount sensor 16 in a state where the press-fitting pipe portion 31 is press-fitted into the insertion pipe portion 15. The movement of the water amount sensor 16 is restricted.
Therefore, since the flange cap 30 is also used for positioning the water amount sensor 16, the number of parts can be reduced, which leads to a reduction in production cost and management cost.

なお、上記形態では、フランジキャップを水量センサの位置決めにも兼用しているが、当該位置決めに兼用しない形態も採用できる。
また、上記形態では、水側部材がオス側管部材、接続部材がメス側管部材となっているが、オスメス関係を逆にすることもできる。
さらに、管継手は、水側部材と接続部材との間に限らず、他の配管同士の接続に用いることもできる。給水側に限らず、バイパス側や出湯側、風呂回路等にも採用可能である。
そして、本発明の管継手は、給湯器に限らず、湯沸器や暖房熱源機、コンロやレンジ、オーブン、フライヤー等の厨房機器、浴室暖房乾燥機、といった各種の流体制御機器においても適用可能である。 In the above form, the flange cap is also used for positioning the water amount sensor, but a form that is not used for the positioning can also be adopted.
Further, in the above embodiment, the water side member is a male side pipe member and the connecting member is a female side pipe member, but the male-female relationship can be reversed.
Further, the pipe joint can be used not only between the water side member and the connecting member but also for connecting other pipes to each other. It can be used not only on the water supply side but also on the bypass side, hot water outlet side, bath circuit, etc.
The pipe joint of the present invention is applicable not only to water heaters but also to various fluid control devices such as water heaters, heating heat source machines, kitchen equipment such as stoves, ranges, ovens and fryer, and bathroom heaters / dryers. Is.

１・・給湯器、２・・筐体、３・・底板、４・・接続部材、５・・水側部材、６・・給水管、１０・・ソケット管、１１・・フランジ、１５・・差し込み管部、１６・・水量センサ、１７・・ケーシング、２３・・受けフランジ、２５・・管継手、２６・・大径部、２７・・小径部、３０・・フランジキャップ、３１・・圧入管部、３２・・フランジ部、３４・・周溝、３５・・装着溝、３６・・Ｏリング。 1 ... Water heater, 2 ... Casing, 3 ... Bottom plate, 4 ... Connection member, 5 ... Water side member, 6 ... Water supply pipe, 10 ... Socket pipe, 11 ... Flange, 15 ... Insert pipe part, 16 ... water volume sensor, 17 ... casing, 23 ... receiving flange, 25 ... pipe joint, 26 ... large diameter part, 27 ... small diameter part, 30 ... flange cap, 31 ... press fit Pipe part, 32 ... Flange part, 34 ... Circumferential groove, 35 ... Mounting groove, 36 ... O-ring.

Claims (3)

オス側管部材にメス側管部材を差込接続するための管継手であって、
前記オス側管部材が、
先端が小径部、基端側が大径部となる段付形状に外周面が形成される差し込み管部と、
前記差し込み管部にその先端側から圧入される圧入管部と、前記圧入管部の基端に周設されるフランジ部とを備えるフランジキャップと、からなり、
前記フランジキャップの前記圧入管部を前記差し込み管部に圧入した状態で、前記大径部と前記フランジ部との間にＯリングが外装される装着溝が形成される管継手であって、
前記差し込み管部の前記小径部の先端側端面には、環状の突条部が突設される一方、
前記フランジ部における前記小径部との対向面には、前記圧入管部の圧入状態で前記突条部が嵌合する周溝が形成されていることを特徴とする管継手。 A pipe joint for inserting and connecting a female side pipe member to a male side pipe member.
The male side pipe member
An insertion tube part with an outer peripheral surface formed in a stepped shape with a small diameter part at the tip and a large diameter part at the base end side,
It is composed of a press-fitting pipe portion to be press-fitted into the insertion pipe portion from the tip end side thereof, and a flange cap provided with a flange portion provided around the base end of the press-fitting pipe portion.
A pipe joint in which a mounting groove on which an O-ring is externally formed is formed between the large diameter portion and the flange portion in a state where the press-fitting pipe portion of the flange cap is press-fitted into the insertion pipe portion.
An annular ridge is provided on the distal end surface of the small diameter portion of the insertion tube portion, while the annular ridge portion is projected.
A pipe joint characterized in that a peripheral groove into which the ridge portion is fitted is formed on a surface of the flange portion facing the small diameter portion in a press-fitted state of the press-fitting pipe portion. 前記オス側管部材と前記メス側管部材とは、給湯器の給水側に設置されるものであって、前記差し込み管部の内部には、水量センサが収容され、前記圧入管部を前記差し込み管部に圧入した状態で、前記圧入管部の先端が前記水量センサのケーシングに当接して前記水量センサの移動を規制することを特徴とする請求項１に記載の管継手。 The male side pipe member and the female side pipe member are installed on the water supply side of the water heater, and a water amount sensor is housed inside the insertion pipe portion, and the press-fitting pipe portion is inserted into the insertion pipe portion. The pipe joint according to claim 1, wherein the tip of the press-fitting pipe portion abuts on the casing of the water volume sensor to restrict the movement of the water volume sensor in a state of being press-fitted into the pipe portion. 請求項１又は２に記載の管継手を備えてなる給湯器。 A water heater comprising the pipe fitting according to claim 1 or 2.
JP2020161194A 2020-09-25 2020-09-25 Pipe joint and water heater Pending JP2022054156A (en)

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