JP2020063793A - Joint for piping - Google Patents

Abstract

To prevent water leakage from a joint.SOLUTION: A female-side joint 20 connected with female-side piping is molded with a resin material, a male-side joint 30 connected with male-side piping is provided with a seal groove 34 in which a rubber ring 4 is mounted, along a circumferential direction on an outer peripheral surface near a tip portion, and provided with a locking step portion 35 for mounting a fastener 5 along the circumferential direction in a male-side piping direction with respect to the seal groove 34, an inner surface of the male-side joint 20 opposed to the tip portion of the male-side joint 30 includes a contact portion 26, a male-side joint 20 opposed to the locking step portion 35 of the male-side joint 30 includes a plurality of slots 24 to which the fastener 5 is inserted, contact portions 25 of the slots 24 kept into contact with the fastener 5 are configured with the shape same as the fastener 5, and the male-side joint 30 and the female-side joint 20 are water-tightly connected by the male-side joint 30, the rubber ring 4 mounted on the seal groove 34, the female-side joint 20, and the fastener 5 mounted on the locking step portion 35, thus occurrence of water leakage caused by cracking of the slots 24 with which the fasteners 5 are kept into contact, can be prevented.SELECTED DRAWING: Figure 2

Description

本発明は、給湯装置や空気調和機の冷温水配管の接続に使用する配管用継手に関するものである。   The present invention relates to a pipe joint used for connecting hot and cold water pipes of a water heater and an air conditioner.

従来例として特開２０１５−２１６３８号の浴槽用給湯口アダプタが有る。この浴槽用給湯口アダプタでは温水配管の接続に雌側継手と雄側継手を、軸方向に着脱自在に接続する継手が使用されている。雌側継手の側面に備える長穴に、軸と直交する方向から略Ｕ字形の留め金を差し込むことで、雌側継手と雄側継手とを連結後に、雌側継手と雄側継手が外れることを防止していた。また、この種の継手は、軽量化や取り扱いのしやすさから硬質合成樹脂の一体成型で製造されていた。（例えば、特許文献１参照）   As a conventional example, there is a hot water inlet adapter for bathtub disclosed in JP-A-2015-21638. In this hot water supply port adapter for a bathtub, a joint for connecting a female joint and a male joint to the hot water pipe is detachably connected in the axial direction. By inserting a substantially U-shaped clasp from a direction orthogonal to the axis into a long hole provided on the side surface of the female joint, the female joint and the male joint are disengaged after connecting the female joint and the male joint. Was prevented. Further, this type of joint has been manufactured by integrally molding a hard synthetic resin in terms of weight reduction and easy handling. (For example, see Patent Document 1)

特開２０１５−２１６３８号公報JP, 2015-21638, A

ところで、上記の特許文献１のものでは、経年変化によって合成樹脂が劣化するとひび割れが発生し、このひび割れによって、水漏れが発生する危険が有る。特に、金属製の留め金と接触する、雌側継手の長穴の接触部は接触面積が小さいために、この接触部からひび割れが発生し、接触部が壊れた場合には雌雄の継手が外れて大量の水漏れが発生する問題が有る。   By the way, in the above-mentioned Patent Document 1, when the synthetic resin deteriorates due to aging, cracks occur, and there is a risk of water leakage due to the cracks. In particular, the contact area of the oblong hole of the female joint that comes into contact with the metal clasp has a small contact area.Therefore, if a crack occurs at this contact portion and the contact portion breaks, the male and female joints will come off. There is a problem that a large amount of water leakage occurs.

本発明は上記課題を解決するために、内部に水流路を有する配管を、軸方向に連結する配管用継手において、雌側配管に接続する雌側継手を樹脂材料で成型し、雄側配管に接続する雄側継手は、先端部に近い外周面に、ゴムリングを装着するシール溝が周方向に沿って形成され、前記シール溝よりも前記雄側配管方向に留め具を装着する係止段部が周方向に沿って形成され、前記雄側継手先端部に対向する、前記雌側継手内面には当接部を備え、前記雄側継手の前記係止段部に対向する前記雌側継手には、前記留め具を挿入する複数の長穴を備え、前記留め具が当接する前記長穴の接触部を前記留め具と同形状に構成し、前記雄側継手と、前記シール溝に装着した前記ゴムリングと、前記雌側継手と、前記係止段部に装着した前記留め具と、によって、前記雄側継手と前記雌側継手を水密に接続するようにした。   The present invention, in order to solve the above problems, a pipe having a water flow path inside, in a pipe joint for axially coupling, a female side joint connected to the female side pipe is molded with a resin material, and a male side pipe is formed. The male joint to be connected has a seal groove for mounting a rubber ring formed on the outer peripheral surface near the tip along the circumferential direction, and a locking step for mounting a fastener in the male pipe direction rather than the seal groove. A portion formed along the circumferential direction, facing the male joint tip, having an abutting portion on the female joint inner surface, and facing the locking step of the male joint. Includes a plurality of elongated holes into which the fastener is inserted, the contact portion of the elongated hole with which the fastener contacts is configured in the same shape as the fastener, and is attached to the male joint and the seal groove. The rubber ring, the female joint, and the fastener attached to the locking step, Accordingly, and so as to connect the female coupling and the male joint watertight.

本発明によれば、留め具が当接する長穴の接触部を留め具と同形状に構成することで、留め具と接触部の接触面積を大きくし、接触部の破壊を防止して、雌雄の継手が外れて大量の水漏れが発生することを防ぐことができる。   According to the present invention, by configuring the contact portion of the elongated hole with which the fastener abuts to have the same shape as the fastener, the contact area between the fastener and the contact portion is increased, and the contact portion is prevented from being destroyed, so It is possible to prevent a large amount of water from leaking due to the joint being disconnected.

この発明の一実施形態の正面方向の断面図。Sectional drawing of the front direction of one Embodiment of this invention. 同継手の接続と留め具の取付を表す左側面図。The left side view showing connection of the joint and attachment of a fastener. 同図１のＡ−Ａ拡大断面図。The AA expanded sectional view of the same FIG. 同雌側継手の拡大正面図。The enlarged front view of the female side joint.

本発明の配管継手１の一実施形態を図面に基づき説明する。
２は給湯装置や空気調和機で使用される配管で、樹脂製のホースや銅管から成り、内部に冷温水が流通する水流路３を有する。配管２は水栓やヘッダー等の機能部品（図示せず）を接続して使用され、必要に応じて配管２どうしの接続や、配管２と機能部品の接続に配管継手１が使用される。 An embodiment of the pipe joint 1 of the present invention will be described with reference to the drawings.
Reference numeral 2 denotes a pipe used in a hot water supply device or an air conditioner, which is made of a resin hose or a copper pipe and has a water flow path 3 through which cold / hot water flows. The pipe 2 is used by connecting functional components (not shown) such as a water faucet and a header, and the pipe joint 1 is used for connecting the pipes 2 to each other or for connecting the pipe 2 and the functional component as needed.

２０は雌側継手で、硬質の合成樹脂材料によって一体成型されている。雌側継手２０の一端には配管接続口２１を有し、雌側配管２２が接続されている。配管接続口２１と雌側配管２２は接着剤や溶着、あるいは雌側配管２２の外周を締め付ける固定具（図示せず）によって固定されている。雌側継手２０の他端には継手側接続口２３を有している。   Reference numeral 20 denotes a female joint, which is integrally molded of a hard synthetic resin material. A pipe connection port 21 is provided at one end of the female joint 20, and a female pipe 22 is connected thereto. The pipe connection port 21 and the female side pipe 22 are fixed by an adhesive, welding, or a fixture (not shown) that tightens the outer circumference of the female side pipe 22. The other end of the female side joint 20 has a joint side connection port 23.

３０は雄側継手で、硬質の合成樹脂材料または金属製の鋳物によって成型されている。雄側継手３０の一端には配管接続口３１を有し、雄側配管３２が接続されている。配管接続口３１と雄側配管３２は接着剤や溶着、あるいは雄側配管３２の外周を締め付ける固定具（図示せず）によって固定されている。雄側継手３０の他端には継手側接続口３３を有している。継手側接続口３３の先端部に近い外周面に、ゴムリング４を装着するシール溝３４が周方向に沿って形成されている。   Reference numeral 30 denotes a male joint, which is molded from a hard synthetic resin material or a metal casting. A pipe connection port 31 is provided at one end of the male side joint 30, and a male side pipe 32 is connected to the male side joint 30. The pipe connection port 31 and the male side pipe 32 are fixed by an adhesive, welding, or a fixture (not shown) that tightens the outer circumference of the male side pipe 32. The other end of the male side joint 30 has a joint side connection port 33. A seal groove 34 for mounting the rubber ring 4 is formed on the outer peripheral surface near the tip of the joint side connection port 33 along the circumferential direction.

３５はシール溝３４よりも雄側配管３２方向で、かつ、周方向に沿って形成される係止段部で、この係止段部３５に沿った雌側継手２０には、周方向に長い４ヶ所の長穴２４を有している。雌側継手２０に雄側継手３０を装着した状態で、Ｕ字型の金具５（留め具）を長穴２４から水流路３と直交する方向に挿入することで、金具５が係止段部３５に係止しすることで、雌側継手２０と雄側継手３０が抜け外れることを防止している。また、周方向に長い長穴２４の雄側配管３２方向には接触部２５を備えている。この接触部２５は図４で示す様に、正面視で雄側継手３０の外周に近い長穴２４の内側に位置する。また、金具５は内側にバネ性を有し、この金具５が当設する長穴２４の接触部２５は、金具５の外周の径と同じＲ形状にすることで、金具５と接触部２５の接触面積を大きくする。これによって、雌側継手２０に長穴２４から亀裂が入って、経年変化で大きくなった亀裂によって金具５が外れ、雌側継手２０と雄側継手３０が抜けることで大量な水漏れが発生することを防止している。   Reference numeral 35 denotes a locking step portion formed in the circumferential direction of the male side pipe 32 with respect to the seal groove 34. The female side joint 20 along the locking step portion 35 is longer in the circumferential direction. It has four elongated holes 24. With the male joint 30 attached to the female joint 20, by inserting the U-shaped metal fitting 5 (fastener) from the slot 24 in the direction orthogonal to the water flow path 3, the metal fitting 5 is locked. The female side joint 20 and the male side joint 30 are prevented from coming off by being locked to 35. Further, a contact portion 25 is provided in the direction of the male pipe 32 of the elongated hole 24 that is long in the circumferential direction. As shown in FIG. 4, the contact portion 25 is located inside the elongated hole 24 near the outer circumference of the male joint 30 in a front view. Further, the metal fitting 5 has a spring property on the inner side, and the contact portion 25 of the elongated hole 24 with which the metal fitting 5 is provided has an R shape that is the same as the outer diameter of the metal fitting 5, so that the metal fitting 5 and the contact portion 25. Increase the contact area of. As a result, a crack is formed in the female joint 20 through the long hole 24, and the metal fitting 5 is detached due to a crack that has become large due to aging, and the female joint 20 and the male joint 30 come off, causing a large amount of water leakage. To prevent that.

３６は雄側継手３０の先端部で、この先端部３６に対向する雌側継手２０内面には段形状の当接部２６を備え、雄側継手３０は当接部２６と長穴２４の間を水流路３の方向に、少し摺動するることで遊び寸法を備えている。そして、ゴムリング４の作用を加えることで、雄側継手３０と雌側継手２０を水密に接続することができる。   Reference numeral 36 denotes a tip end portion of the male side joint 30, and a step-shaped contact portion 26 is provided on the inner surface of the female side joint 20 facing the tip end portion 36, and the male side joint 30 is provided between the contact portion 26 and the long hole 24. A play dimension is provided by sliding the part a little in the direction of the water flow path 3. Then, by adding the action of the rubber ring 4, the male side joint 30 and the female side joint 20 can be connected in a watertight manner.

以上説明したように、本発明によれば、留め具５が当接する長穴２４の接触部２５を留め具５と同形状に構成することで、留め具５と接触部２５の接触面積を大きくし、接触部２５の破壊を防止して、雌雄の継手２０・３０が外れて大量の水漏れが発生することを防ぐことができる。   As described above, according to the present invention, by making the contact portion 25 of the elongated hole 24 with which the fastener 5 abuts has the same shape as the fastener 5, the contact area between the fastener 5 and the contact portion 25 is increased. However, it is possible to prevent the contact portion 25 from being broken and prevent the male and female joints 20 and 30 from coming off and causing a large amount of water leakage.

また、本実施形態で用いた構成は一例として提示したものであり、発明の範囲を限定することは意図しておらず、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲において、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると共に、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   Further, the configuration used in the present embodiment is presented as an example, is not intended to limit the scope of the invention, it can be carried out in various other forms, the gist of the invention. Various omissions, replacements, and changes can be made without departing from the above. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

１ 配管継手
２ 配管
３ 水流路
４ ゴムリング
５ 金具（留め具）
２０ 雌側継手
２１ 配管接続口
２２ 雌側配管
２４ 長穴
２５ 接続部
２６ 当接部
３０ 雄側継手
３２ 雄側配管
３４ シール溝
３５ 係止段部 1 Piping joint 2 Piping 3 Water channel 4 Rubber ring 5 Metal fitting (fastener)
20 Female Side Joint 21 Pipe Connection Port 22 Female Side Pipe 24 Slot 25 Connection Portion 26 Abutting Portion 30 Male Side Joint 32 Male Side Pipe 34 Seal Groove 35 Locking Step

Claims (2)

内部に水流路を有する配管を、軸方向に連結する配管用継手において、
雌側配管に接続する雌側継手を樹脂材料で成型し、
雄側配管に接続する雄側継手は、先端部に近い外周面に、ゴムリングを装着するシール溝が周方向に沿って形成され、
前記シール溝よりも前記雄側配管方向に留め具を装着する係止段部が周方向に沿って形成され、
前記雄側継手先端部に対向する、前記雌側継手内面には当接部を備え、
前記雄側継手の前記係止段部に対向する前記雌側継手には、前記留め具を挿入する複数の長穴を備え、
前記留め具が当接する前記長穴の接触部を前記留め具と同形状に構成し、
前記雄側継手と、前記シール溝に装着した前記ゴムリングと、前記雌側継手と、前記係止段部に装着した前記留め具と、によって、
前記雄側継手と前記雌側継手を水密に接続することを特徴とする配管用継手。 In a pipe joint for connecting a pipe having a water flow path inside, in the axial direction,
Mold the female joint to connect to the female pipe with resin material,
The male joint connected to the male pipe has a seal groove for mounting a rubber ring formed on the outer peripheral surface near the tip along the circumferential direction.
A locking step portion for mounting a fastener in the male pipe direction with respect to the seal groove is formed along the circumferential direction,
An abutting portion is provided on the female-side joint inner surface, which faces the male-side joint tip portion,
The female joint facing the locking step of the male joint includes a plurality of elongated holes into which the fasteners are inserted,
The contact portion of the elongated hole with which the fastener abuts is configured in the same shape as the fastener,
By the male side joint, the rubber ring attached to the seal groove, the female side joint, and the fastener attached to the locking step portion,
A pipe joint characterized in that the male joint and the female joint are connected in a watertight manner. 前記留め具を略Ｕ字型で断面円形の針金で形成し、前記前記長穴の前記接触部を針金の径と略同一曲面に形成したことを特徴とする請求項１に記載の配管用継手。   The pipe fitting according to claim 1, wherein the fastener is formed of a wire having a substantially U-shape and a circular cross section, and the contact portion of the elongated hole is formed on a curved surface substantially the same as the diameter of the wire. .

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