JP2599211B2 - Electric fusion fittings - Google Patents

Electric fusion fittings

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Publication number
JP2599211B2
JP2599211B2 JP2121909A JP12190990A JP2599211B2 JP 2599211 B2 JP2599211 B2 JP 2599211B2 JP 2121909 A JP2121909 A JP 2121909A JP 12190990 A JP12190990 A JP 12190990A JP 2599211 B2 JP2599211 B2 JP 2599211B2
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JP
Japan
Prior art keywords
joint
pipe
fastening
socket
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.)
Expired - Lifetime
Application number
JP2121909A
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Japanese (ja)
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JPH0419494A (en
Inventor
秀樹 倍
茂 奥坂
Original Assignee
株式会社クボタ
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Priority to JP2121909A priority Critical patent/JP2599211B2/en
Publication of JPH0419494A publication Critical patent/JPH0419494A/en
Application granted granted Critical
Publication of JP2599211B2 publication Critical patent/JP2599211B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7855Provisory fixing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5221Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52Joining tubular articles, bars or profiled elements
    • B29C66/522Joining tubular articles
    • B29C66/5229Joining tubular articles involving the use of a socket
    • B29C66/52291Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74Joining plastics material to non-plastics material
    • B29C66/742Joining plastics material to non-plastics material to metals or their alloys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/22Tubes or pipes, i.e. rigid

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は電気融着継手に関し、特にたとえば流体輸送用等の配管に用いられる、電気融着継手に関する。 BACKGROUND OF THE INVENTION [Field of the Industrial] This invention relates to electrical welding joint, used in particular for example a pipe, such as fluid transport, for electrical welding joint.

〔従来技術〕 [Prior art]

従来の電気融着継手(以下、単に「継手」という)1 Conventional electric welding joint (hereinafter, simply referred to as "joint") 1
は、第6図に示すように、ポリエチレンやポリブテン等の合成樹脂からなる略中空円筒状の本体2を含み、本体2に埋め込まれた電熱線3の両端部には、本体2から突出して通電端子4が形成されている。 As shown in Figure 6, it includes a generally hollow cylindrical body 2 made of synthetic resin such as polyethylene or polybutene, at both ends of the heating wire 3 embedded in the body 2, projecting from the main body 2 energized terminal 4 is formed.

〔発明が解決しようとする課題〕 [Problems that the Invention is to Solve]

このような従来の継手1を用いて融着接合するには、 To fusion bonded using such a conventional joint 1,
まず、継手1の受口5に接続すべきパイプ6を挿入し、 First, insert the pipe 6 to be connected to the socket 5 of the joint 1,
図示しないクランプ治具で継手1とパイプ6とを固定する。 Not illustrated clamping jig for fixing the joint 1 and the pipe 6. 次いで、図示しない電源装置の電線を通電端子4に接続して電熱線3に通電する。 Then, by connecting a wire of a power supply device (not shown) to the conduction terminal 4 energizes the heating wire 3. 所定の時間通電した後は、その状態、すなわち継手1とパイプ6とをクランプ治具で固定した状態で融着面を冷却し、そして、融着面が固化した後にクランプ治具を外すようにしていた。 After energizing a predetermined time, the condition, i.e. to cool the fused surface and a fitting 1 and pipe 6 in a state of being clamped tool and to disengage the clamping jig after the fusing surface is solidified which was. なお、通電には数10秒〜5分程、冷却固化には5分〜20分程の時間を要していた(継手1あるいはパイプ6のサイズにより異なる)。 Incidentally, as 5 minutes to several 10 seconds to energizing, cooling solidification it has required time of about 5 minutes to 20 minutes (depending on the size of the joint 1 or the pipe 6).

このような融着接合においては、パイプ6の抜けや不完全融着を防止するために、融着面が完全に固化するのを待ってクランプ治具を外すようにしていたが、待ちきれずに途中で外してしまうこともあって、接続の品質が保証できず、パイプ6の抜けや不完全融着による水漏れ等の事故が発生する恐れがあった。 In such fusion bonding, in order to prevent the omission or incomplete fusion of the pipe 6, waits for the fusing surface is completely solidified had been to remove the clamp jig, impatient Partly accidentally disconnect on the way, we can not guarantee the quality of the connection, an accident of water leakage due missing or incomplete fusion of the pipe 6 may occur.

また、複数箇所を接合する場合には、複数のクランプ治具でそれぞれの融着筒所を先に固定しておき、それぞれの継手1の電熱線3に順次連続的に通電していくようにすれば、融着面が固化する時間(5分〜20分程)を待つ必要がなく、作業効率を向上できるのであるが、クランプ治具は高価で、しかも嵩張るため、多数のクランプ治具を現場に準備することは実際不可能であった。 Further, in the case of joining a plurality of portions is previously fixed ahead of each fusion cylinder plants with multiple clamping jig, as sequentially continuously energizing the heating wire 3 of each joint 1 if, there is no need to wait for a time (about 5 minutes to 20 minutes) the fusing surface is solidified, but it can improve the working efficiency, the clamping jig expensive and bulky because the number of the clamp jig it was actually impossible to prepare the site. したがって、結局、作業効率はあまりよくなかった。 Therefore, after all, work efficiency was not very good.

それゆえに、この発明の主たる目的は、水漏れ等の事故を防止でき、しかも作業効率を向上できる、電気融着継手を提供することである。 Another object of the present invention can prevent accidents water leakage or the like, moreover can improve the working efficiency is to provide an electric welding joint.

〔課題を解決するための手段〕 [Means for Solving the Problems]

この発明は、受口を有しかつ受口の内面に発熱体が設けられた継手本体を含む電気融着継手において、受口の開口側端部から継手本体の軸方向へ延びて継手本体と一体に形成されるかつ締付部材によって内側へ変位される複数の締着片を備えることを特徴とする、電気融着継手である。 The present invention, in an electric welding joint comprising a joint body having the heating element is provided on the inner surface of a and socket the socket, and the fitting body extends from the open end of the socket in the axial direction of the joint body characterized in that it comprises a plurality of fastening pieces are displaced inwardly by and fastening members are integrally formed, an electric fusion coupling.

〔作用〕 [Action]

継手の受口にパイプを挿入し、締付部材を用いて締着片を締め付ける。 Insert the pipe socket of the joint, clamping the fastening strips using a fastening member. すると、締着片の内面がパイプの外面に圧接されて、締着片すなわち継手とパイプとが固定される。 Then, the inner surface of the fastening piece is pressed against the outer surface of the pipe, and a fastening piece That joint and the pipe is fixed. 締付部材には、安価で、しかも簡単な(嵩張らない)ものが用いられ、また、一旦装着された締付部材は、融着完了後も取り外されることなくそのまま放置される。 The clamping member, inexpensive, yet simple (not bulky) what is used, also, once loaded clamping member, it is left without being removed even after the fusion is complete.

〔発明の効果〕 〔Effect of the invention〕

この発明によれば、締付部材は、融着完了後も取り外されることなくそのまま放置されるので、冷却の途中で継手とパイプとの固定を解除してしまうといった心配がなく、したがって、水漏れ等の事故を防止することができる。 According to the invention, the clamping member, so it is left without being removed even after the fusion completion, there is no fear such would release the fixation of the joint and the pipe in the middle of cooling, therefore, water leak it is possible to prevent the accidents and the like.

また、締付部材は、安価で、しかも嵩張らないものが用いられるので、現場に多数準備することができる。 Further, the clamping member is inexpensive, and since bulky ones are used, it is possible to prepare a large number in the field. したがって、複数の融着箇所を先に固定しておき、融着面が固化するのを待たずに順次連続的に通電していく方法によって作業効率を向上することができる。 Therefore, it is possible to improve work efficiency in advance by fixing a plurality of fused portions previously sequentially continuously energized without waiting for fusing surface is solidified methods.

この発明の上述の目的,その他の目的,特徴および利点は、図面を参照して行う以下の実施例の詳細な説明から一層明らかとなろう。 The above described objects and other objects, features and advantages will become more apparent from the following detailed description of the embodiments with reference to the accompanying drawings.

〔実施例〕 〔Example〕

第1A図および第1B図を参照して、この実施例の継手10 Referring to Figures 1A and Figure 1B, the joint 10 of this embodiment
は、たとえばポリエチレン、ポリブテン等の合成樹脂からなる略中空円筒状の本体12を含み、本体12の両端部には、後述するパイプ14を受け入れる受口16が形成される。 , For example polyethylene, it includes a generally hollow cylindrical body 12 made of synthetic resin polybutene, at both ends of the main body 12, socket 16 for receiving a pipe 14 to be described later is formed. そして、受口16の内表面近傍には加熱用の電熱線18 Then, heating wire for heating the inner surface near the socket 16 18
が埋め込まれ、この電熱線18の両端部には、本体12から突出して通電端子20が形成される。 Is embedded, at both ends of the heating wire 18, conductive terminal 20 is formed to protrude from the body 12. 通電端子20は、被覆線22によって覆われる。 Conducting terminal 20 is covered by the covering wire 22.

そして、受口16の開口側端部から本体12の軸方向へ延びて締着部24が形成される。 The fastening portion 24 extending from the open end of the socket 16 in the axial direction of the main body 12 is formed. 締着部24は、スリット26によって隔てられた複数(この実施例では3つ)の締着片 Fastening portion 24, fastening strips of the plurality separated by slits 26 (three in this embodiment)
28を含み、各締着片28が、本体12の軸方向へ延びて本体 Comprises 28, each fastening piece 28, the main body extends in the axial direction of the main body 12
12と一体に形成される。 12 and are integrally formed. 各締着片28の肉厚は、本体12の肉厚よりやや薄く設定される。 The thickness of each fastening piece 28 is slightly thinner set than the thickness of the body 12.

第2図を参照して、接合時には、まず、継手10の左右の受口16にたとえばポリエチレンやポリブテン等の合成樹脂からなるパイプ14を挿入し、次いで、締付部材30を用いて締着部24を締め付ける。 With reference to Figure 2, at the time of joining, firstly, inserting the pipe 14 made of a synthetic resin, for example such as polyethylene or polybutene socket 16 of the right and left of the joint 10, then fastening part with fastening members 30 tighten the 24. すると、各締着片28の内面がパイプ14の外面に圧接され、これによって、継手10 Then, the inner surface of each fastening piece 28 is pressed against the outer surface of the pipe 14, whereby the joint 10
とパイプ14とが仮固定される。 And the pipe 14 are temporarily fixed. そして、図示しない電源装置の電線を通電端子20に接続して電熱線18に通電する。 Then, by connecting a wire of a power supply device (not shown) to the conduction terminals 20 to energize the heating wire 18.

なお、締付部材30としては、第2図に示したインシュロックタイ(商品名:タイトン株式会社)や図示しないホースクリップ等の安価で、しかも簡単な(嵩張らない)ものが用いられ、また、一旦装着された締付部材30 As the fastening member 30, insulation lock tie shown in Figure 2 (trade name: HellermannTyton Corporation) and not shown hose clips, etc. inexpensive, and yet simple (not bulky) what is used, also, once with the mounted clamping member 30
は、取り外されることなく、そのまま放置される。 Is, without being removed, is left as it is.

通電後は、融着面が冷却固化した時点で融着接合が完了するが、締付部材30は、接合完了後もそのまま放置されるので、融着作業は、実質的に、電熱線18への通電が終了した時点で完了する。 After power is fused surface is fusion bonded at the time of the cooling and solidification is complete, the clamping member 30, so even after the completion of bonding is left as it is, the fusion work is essentially the heating wire 18 completed at the time of the energization has been completed.

この実施例によれば、融着時に継手10とパイプ14とを固定できるので、パイプ14の抜けや不完全融着による水漏れ等の事故を防止できる。 According to this embodiment, it is possible to fix the joint 10 and the pipe 14 at the time of fusing, can prevent an accident of water leakage due missing or incomplete fusion of the pipe 14.

また、締付部材30は、安価で、しかも嵩張らないため、現場に多数持ち込むことが可能であり、したがって、複数の融着箇所を先に固定しておき、順次連続的に通電していく方法によって、作業効率を向上できる。 Furthermore, fastening member 30 is inexpensive, and since no bulky, it is possible to bring a large number in the field, therefore, leave fixing a plurality of fused portions previously sequentially continuously energized method by, it is possible to improve the work efficiency.

なお、この発明は、上述の実施例のようなソケット以外に、チーズ,エルボ,ヘッダまたは片口継手等の配管部材に適用でき、たとえば、片口継手に適用する場合には、第3図に示すように締着部24が形成される。 The present invention is, in addition to the socket as described above in Example, application can cheese, elbow, the pipe member such as a header or katakuchi joint, for example, when applied to single-ended joint, as shown in Figure 3 fastening portion 24 is formed.

また、締着片28の大きさあるいはその数は、たとえば第4A図および第4B図に示すように、適宜に変更されてもよく、締着片28の内面には、第5図で示すように、パイプ14の抜けをより確実に防止するための凹凸32が形成されてもよい。 The size or number thereof fastening pieces 28, for example, as shown in Figures 4A and Figure 4B may be changed appropriately, the inner surface of the fastening piece 28, as shown in FIG. 5 the irregularities 32 may be formed in order to more reliably prevent the leakage of the pipe 14.

また、各締着片28の外表面周方向には、締付部材30を装着するための溝34(第5図)が形成されてもよい。 Further, on the outer surface circumferential direction of each fastening piece 28, a groove 34 (FIG. 5) may be formed for mounting the clamping member 30. この溝34に締付部材30を装着するようにすると、締付部材 When so as to mount the clamping member 30 into the groove 34, the clamping member
30を簡単に位置決めすることができ、しかも、締付部材 You can easily position the 30, moreover, the clamping member
30の抜けを防止できる。 30 missing can be prevented of.

さらに、加熱手段としては、電熱線18に替えて中空円筒板(図示せず)やその他任意の発熱体が用いられてもよい。 Further, as the heating means, a hollow cylindrical plate instead of the heating wire 18 (not shown) or any other heating element may be used.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1A図および第1B図はこの発明の一実施例を示す図解図であり、第1A図は正面半断面図、第1B図は右側面図である。 Figures 1A and Figure 1B is an illustrative view showing one embodiment of the present invention, Figure 1A is a front half-section view, Figure 1B is a right side view. 第2図は接合時の状態を示す図解図である。 Figure 2 is an illustrative view showing a state during joining. 第3図はこの発明の他の実施例を示す半断面図である。 Figure 3 is a half cross-sectional view showing another embodiment of the present invention. 第4A図および第4B図は締着部の変形例を示す図解図であり、第4A図は一部省略正面図、第4B図は右側面図である。 Figures 4A and Figure 4B is an illustrative view showing a modified example of the fastening portion, Figure 4A is fragmentary front view, Figure 4B is a right side view. 第5図は締着部の他の変形例を示す図解図である。 Figure 5 is an illustrative view showing another modification of the fastening portion. 第6図は従来技術を示す断面図である。 Figure 6 is a sectional view showing a conventional art. 図において、10は電気融着継手、12は本体、14はパイプ、16は受口、18は電熱線、20は通電端子、24は締着部、26はスリット、28は締着片、30は締付部材を示す。 In the figure, the electric fusion coupling 10, 12 body, 14 a pipe, 16 socket 18 is heating wire, 20 is energized pin 24 is clamped portion, 26 slit, 28 fastening pieces 30 It indicates a clamping member.

Claims (1)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】受口を有しかつ前記受口の内面に発熱体が設けられた継手本体を含む電気融着継手において、 前記受口の開口側端部から前記継手本体の軸方向へ延びて前記継手本体と一体に形成されるかつ締付部材によって内側へ変位される複数の締着片を備えることを特徴とする、電気融着継手。 [Claim 1, further comprising a receptacle and in electric welding joint comprising a fitting body that the heating element is provided on an inner surface of said receptacle, extending from the open end of the socket in the axial direction of the joint body characterized in that it comprises a plurality of fastening pieces are displaced inwardly by and fastening member is formed integrally with the joint body Te, electric welding joint.
JP2121909A 1990-05-11 1990-05-11 Electric fusion fittings Expired - Lifetime JP2599211B2 (en)

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Application Number Priority Date Filing Date Title
JP2121909A JP2599211B2 (en) 1990-05-11 1990-05-11 Electric fusion fittings

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JP2599211B2 true JP2599211B2 (en) 1997-04-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422372A1 (en) * 1994-06-27 1996-01-04 Gruber Alois Agru Gmbh A method for welding plastic pipes and sleeve for carrying out the method
JP2000162066A (en) 1998-11-26 2000-06-16 Denso Corp Sensor device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152752B1 (en) * 1984-02-20 1988-08-24 Georg Fischer Aktiengesellschaft Connection for fibre-reinforced plastic pipes
CH671444A5 (en) * 1986-06-25 1989-08-31 Fischer Ag Georg
JPS63185989U (en) * 1987-05-21 1988-11-29

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