JPH07134182A - Underground buried pipe labeling device - Google Patents
Underground buried pipe labeling deviceInfo
- Publication number
- JPH07134182A JPH07134182A JP28262293A JP28262293A JPH07134182A JP H07134182 A JPH07134182 A JP H07134182A JP 28262293 A JP28262293 A JP 28262293A JP 28262293 A JP28262293 A JP 28262293A JP H07134182 A JPH07134182 A JP H07134182A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- terminal
- connector fitting
- fitting portion
- heating coil
- 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.)
- Pending
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地中埋設管の埋設位置
を探知するための地中埋設管標識装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground buried pipe marking device for detecting the buried position of an underground buried pipe.
【０００２】[0002]
【従来の技術】地中埋設管の埋設位置を探知するため
に、共振体とアンテナコイルとで構成した共振回路を用
いることは従来から行なわれている（特開昭６３−２４
３８９７号公報参照）。2. Description of the Related Art In order to detect the buried position of an underground buried pipe, it has been conventionally practiced to use a resonant circuit composed of a resonator and an antenna coil (JP-A-63-24).
3897 publication).
【０００３】一方、地中埋設管に熱可塑性樹脂管が使用
される場合、熱可塑性樹脂管の接続に、融着継手とよば
れる管継手が多く使用されている。この管継手は、熱可
塑性樹脂管の端部を受ける受口部に、発熱コイルが該受
口部の周方向に旋回するように埋め込まれ、外面に、コ
ネクタ嵌合部が一体的に設けられ、このコネクタ嵌合部
に、前記発熱コイルと接続された端子が埋め込まれてい
る。つまり、熱可塑性樹脂管の端部を前記管継手の受口
部に挿入した状態で発熱コイルに通電し、発熱コイルを
発熱させて受口部と管の端部とを融着させ、これによっ
て管継手と管との接合が行なわれている。On the other hand, when a thermoplastic resin pipe is used for the underground buried pipe, a pipe joint called a fusion joint is often used for connecting the thermoplastic resin pipes. In this pipe joint, a heating coil is embedded in a receiving portion that receives an end portion of a thermoplastic resin pipe so as to rotate in a circumferential direction of the receiving portion, and a connector fitting portion is integrally provided on an outer surface. A terminal connected to the heating coil is embedded in the connector fitting portion. That is, the heating coil is energized with the end portion of the thermoplastic resin tube inserted in the receiving portion of the pipe joint, and the heating coil is caused to generate heat so that the receiving portion and the end portion of the pipe are fused together. The pipe joint and the pipe are joined.
【０００４】ところで、近年、管継手と管の接合が行な
われた後も管継手に発熱コイルが残されることに着目
し、管を接続した後は、この管継手の発熱コイルをアン
テナコイルとして機能させるようにした標識装置が提案
されている。By the way, in recent years, paying attention to the fact that the heating coil remains in the pipe joint even after the pipe joint is joined, and after connecting the pipes, the heating coil of the pipe joint functions as an antenna coil. A marking device adapted to do so has been proposed.
【０００５】この標識装置は、特開平３−７８６８９号
公報に記載のように、上述のように構成された管継手
と、共振体に一対の接続ケーブルを取り付けると共に、
各接続ケーブルの先端に前記コネクタ嵌合部の外に嵌合
可能なキャップ状のコネクタを設け、このコネクタの内
部に、前記接続ケーブルと接続された端子（ジャック）
を設けて構成したアダプターと、で構成されていて、管
継手のコネクタ嵌合部にアダプタのコネクタを嵌合させ
ると共に、コネクタ内の端子をコネクタ嵌合部の端子に
嵌合させて両端子を接触させると、管継手の発熱コイル
がアンテナコイルとなって励振信号を受信し、それによ
って共振体が振動し、励振信号が停止した後は共振体に
残留している共振信号が発熱コイルから放出されるよう
になっている。つまり、管継手と管とを接合させた後、
アダプターのコネクタを管継手のコネクタ嵌合部に嵌合
させると共に、コネクタ内の端子をコネクタ嵌合部の端
子に嵌合させ、アダプターを管継手と一緒に地中に埋設
すると、共振体を励振する励振信号を地上の探知器から
送信すると共に、その励振信号に応答して発熱コイルか
ら放出される共振信号を地上の探知器で受信することに
より、管継手の埋設位置を探知することができる。As described in Japanese Patent Application Laid-Open No. 3-78689, this marker device has a pipe joint constructed as described above and a pair of connecting cables attached to a resonator,
A cap-shaped connector that can be fitted to the outside of the connector fitting portion is provided at the tip of each connection cable, and a terminal (jack) connected to the connection cable is provided inside the connector.
And an adapter configured by providing a connector for fitting the connector of the adapter to the connector fitting portion of the pipe joint, and fitting the terminal in the connector to the terminal of the connector fitting portion to connect both terminals. Upon contact, the heating coil of the pipe joint functions as an antenna coil to receive the excitation signal, which causes the resonator to vibrate, and after the excitation signal stops, the resonance signal remaining in the resonator is emitted from the heating coil. It is supposed to be done. That is, after joining the pipe joint and the pipe,
When the connector of the adapter is fitted to the connector fitting part of the pipe joint, the terminals in the connector are fitted to the terminals of the connector fitting part, and the adapter is embedded in the ground together with the pipe fitting, the resonator is excited. The embedded position of the pipe joint can be detected by transmitting the excitation signal from the ground detector and receiving the resonance signal emitted from the heating coil in response to the excitation signal by the ground detector. .
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の地中埋設管標識装置にあっては、コネクタを
キャップ状に形成してコネクタ嵌合部に嵌合させること
によりコネクタ嵌合部に水が浸入するのを防止している
ために、コネクタ嵌合部に対する端子の取り付け精度
や、コネクタに対する端子の取り付け精度等が悪いと、
両者を嵌合させた時に管継手のコネクタ嵌合部とアダプ
タのコネクタとの間に隙間が生じて水が浸入し、端子が
水に濡れてすぐに腐食してしまう虞があった。However, in such a conventional underground buried pipe marking device, the connector is formed in a cap shape and fitted into the connector fitting portion, so that the connector fitting portion is fitted into the connector fitting portion. Since water is prevented from entering, if the accuracy of attaching the terminal to the connector fitting part or the accuracy of attaching the terminal to the connector is poor,
When the two are fitted together, a gap may be created between the connector fitting portion of the pipe joint and the connector of the adapter, water may enter, and the terminals may become wet and corroded immediately.
【０００７】そこで、本発明は、上記のような問題に着
目し、端子の取り付け精度等に影響されて端子が水に濡
れて腐食することのない地中埋設管標識装置を提供する
ことを共通の目的としている。Therefore, the present invention focuses on the above problems, and it is common to provide an underground buried pipe marking device in which the terminal is not affected by the mounting accuracy of the terminal and the like and the terminal is not corroded by getting wet with water. The purpose is.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明請求項１記載の地中埋設管標識装置は、熱可
塑性樹脂管の端部を受ける受口部に発熱コイルが前記受
口部の周方向に旋回するように埋め込まれ、外面にコネ
クタ嵌合部が設けられ、このコネクタ嵌合部に前記発熱
コイルと接続された端子が設けられている熱可塑性樹脂
製の管継手と、共振体に一対の接続ケーブルを取り付け
ると共に、各接続ケーブルの先端に前記コネクタ嵌合部
と嵌合可能なコネクタを設け、このコネクタの内部に、
前記接続ケーブルと接続された端子が設けられているア
ダプターとを備えている地中埋設管標識装置において、
前記コネクタ嵌合部の端子と前記コネクタの端子の一方
に凸部が設けられ、他方に前記凸部を挿入可能な凹部が
設けられ、かつ、前記凸部を前記凹部に挿入させた時に
コネクタ嵌合部とコネクタとの間で押し潰され、コネク
タ嵌合部とコネクタの間を止水可能なシール材を備えて
いる。In order to achieve the above object, the underground buried pipe marking apparatus according to the first aspect of the present invention is such that the heating coil is provided in the receiving portion for receiving the end portion of the thermoplastic resin pipe. A pipe fitting made of a thermoplastic resin, which is embedded so as to swirl in the circumferential direction of the mouth portion, is provided with a connector fitting portion on the outer surface, and is provided with a terminal connected to the heating coil in the connector fitting portion. , A pair of connection cables are attached to the resonator, and a connector capable of fitting with the connector fitting portion is provided at the tip of each connection cable, and inside the connector,
In an underground buried pipe marking device comprising an adapter provided with a terminal connected to the connection cable,
One of the terminal of the connector fitting portion and the terminal of the connector is provided with a convex portion, the other is provided with a concave portion into which the convex portion can be inserted, and the connector is fitted when the convex portion is inserted into the concave portion. A seal member that is crushed between the mating portion and the connector and that can stop water between the connector fitting portion and the connector is provided.
【０００９】また、上記目的を達成するために、本発明
請求項２記載の地中埋設管標識装置は、上記地中埋設管
標識装置において、前記コネクタ嵌合部の端子と前記コ
ネクタの端子の少なくとも一方に弾性を有する凸部が設
けられ、他方に前記凸部を挿入可能な凹部が設けられて
いる。In order to achieve the above object, the underground buried pipe marking device according to a second aspect of the present invention is, in the underground buried pipe marking device, a terminal of the connector fitting portion and a terminal of the connector. At least one of the projections has elasticity and the other has a recess into which the projection can be inserted.
【００１０】[0010]
【作用】請求項１記載の地中埋設管標識装置では、管継
手のコネクタ嵌合部とアダプターのコネクタとの間でシ
ール材を押し潰しながらコネクタ嵌合部とコネクタを嵌
合させると共に、コネクタ嵌合部に設けられている端子
とコネクタに設けられている端子の一方に形成されてい
る凸部を他方に形成されている凹部に挿入させると、コ
ネクタ嵌合部に対する端子の取り付け精度やコネクタに
対する端子の取り付け精度等が悪く、管継手のコネクタ
嵌合部とアダプタのコネクタの間に隙間が生じても、コ
ネクタ嵌合部とコネクタの間で押し潰されるシール材に
よって止水されるので、端子が水に濡れてすぐに腐食す
ることはない。In the underground buried pipe marking device according to the present invention, the connector fitting portion and the connector are fitted while the sealing material is crushed between the connector fitting portion of the pipe joint and the connector of the adapter. By inserting the protrusion formed on one of the terminal provided on the fitting portion and the terminal provided on the connector into the recess formed on the other, the accuracy of attaching the terminal to the connector fitting portion and the connector can be improved. Even if the mounting accuracy of the terminal with respect to is poor and a gap is created between the connector fitting part of the pipe joint and the connector of the adapter, water is stopped by the seal material that is crushed between the connector fitting part and the connector. The terminals do not get wet and corrode immediately.
【００１１】請求項２記載の地中埋設管標識装置では、
管継手のコネクタ嵌合部とアダプターのコネクタとの間
にシール材を設けてコネクタ嵌合部とコネクタを嵌合さ
せると共に、コネクタ嵌合部に設けられている端子とコ
ネクタに設けられている端子の一方に形成されている凸
部を他方に形成されている凹部に挿入させると、コネク
タ嵌合部に対する端子の取り付け精度やコネクタに対す
る端子の取り付け精度等が悪くても、前記凸部が弾性変
形することによってその誤差が吸収がされるので、管継
手のコネクタ嵌合部とアダプタのコネクタとの間に水が
浸入する隙間が生じることがない。In the underground buried pipe marking device according to claim 2,
A sealing material is provided between the connector fitting portion of the pipe joint and the connector of the adapter to fit the connector fitting portion to the connector, and the terminal provided in the connector fitting portion and the terminal provided in the connector. By inserting the convex part formed on one side into the concave part formed on the other side, the convex part is elastically deformed even if the accuracy of attaching the terminal to the connector fitting portion or the accuracy of attaching the terminal to the connector is poor. By doing so, the error is absorbed, so there is no gap between the connector fitting portion of the pipe joint and the connector of the adapter for water to enter.
【００１２】[0012]
【実施例】まず、図１に基づいて、第１実施例の地中埋
設管標識装置の概要について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the outline of the underground buried pipe marking device of the first embodiment will be described with reference to FIG.
【００１３】図１は、本実施例の地中埋設管標識装置を
示す一部切り欠き正面図で、図中１は管継手、２はアダ
プターである。FIG. 1 is a partially cutaway front view showing an underground buried pipe marking device of the present embodiment, in which 1 is a pipe joint and 2 is an adapter.
【００１４】前記管継手１は、熱可塑性樹脂により略円
筒状に成形されており、両端部に熱可塑性樹脂管Ｐ，Ｐ
の端部を受ける受口部１１が設けられている。そして、
これらの受口部１１には、発熱コイル１２が前記受口部
１１の周方向に旋回するように埋め込まれていると共
に、外面に一対のコネクタ嵌合部１３が凹設され、この
コネクタ嵌合部１３に、前記発熱コイル１２と接続され
た端子１４が埋設されている。The pipe joint 1 is formed of a thermoplastic resin into a substantially cylindrical shape, and has thermoplastic resin pipes P, P at both ends.
Is provided with a receptacle 11 for receiving the end of the. And
A heat-generating coil 12 is embedded in these receiving portions 11 so as to rotate in the circumferential direction of the receiving portion 11, and a pair of connector fitting portions 13 is provided on the outer surface of the receiving coil 11. A terminal 14 connected to the heating coil 12 is embedded in the portion 13.
【００１５】前記アダプター２は、共振体２１に一対の
接続ケーブル２２を取り付けると共に、各接続ケーブル
２２の先端に前記コネクタ嵌合部１３と嵌合可能なコネ
クタ２３を設け、このコネクタ２３の内部に、前記接続
ケーブル２２と接続された端子２４を設けて構成されて
いる。前記共振体２１は、例えば、合成樹脂等の耐食性
を備えた不導体からなるケース２５に収納されている。
また、共振体２１としては、水晶振動子等の圧電振動体
が好適に用いられる。これは、共振体２１に圧電振動体
を用いた場合、共振体２１に蓄積されるエネルギー量が
多くなるので、励振信号に対する共振信号を大きくとる
ことができ、高精度の探知を行なう上で都合が良いから
である。なお、共振体２１はコンデンサであってもよ
い。In the adapter 2, a pair of connection cables 22 are attached to the resonator 21, a connector 23 that can be fitted to the connector fitting portion 13 is provided at the tip of each connection cable 22, and inside the connector 23. , A terminal 24 connected to the connection cable 22 is provided. The resonator 21 is housed in a case 25 made of a non-corrosive material such as synthetic resin having corrosion resistance.
Further, as the resonator 21, a piezoelectric vibrating body such as a crystal oscillator is preferably used. This is because when a piezoelectric vibrating body is used as the resonator 21, the amount of energy accumulated in the resonator 21 increases, so that a resonance signal with respect to the excitation signal can be made large, which is convenient for highly accurate detection. Is good. The resonator 21 may be a capacitor.
【００１６】次に、図２に基づいて、本実施例の地中埋
設管標識装置の特徴であるコネクタ嵌合部１３ならびに
コネクタ２３と、その間の構成について説明する。Next, with reference to FIG. 2, the connector fitting portion 13 and the connector 23, which are the features of the underground buried pipe marking device of this embodiment, and the structure between them will be described.
【００１７】図２は、地中埋設管標識装置の要部を示す
分解図で、図中３はゴムリング、４はスプリングワッシ
ャである。FIG. 2 is an exploded view showing a main part of the underground buried pipe marking device. In FIG. 2, 3 is a rubber ring and 4 is a spring washer.
【００１８】コネクタ嵌合部１３は、底が平らで側面が
外に向けて広がるテーパを有した形状に形成されてお
り、このコネクタ嵌合部１３に埋設された端子１４は、
コネクタ嵌合部１３の底のほぼ中心に位置する箇所に雌
ねじ１４１（特許請求の範囲の凹部に対応する）を有し
ている。The connector fitting portion 13 is formed in a shape having a flat bottom and a side surface that tapers outward, and the terminal 14 embedded in the connector fitting portion 13 is
A female screw 141 (corresponding to the recessed portion in the claims) is provided at a position located substantially at the center of the bottom of the connector fitting portion 13.
【００１９】コネクタ２３は、前記コネクタ嵌合部１３
に嵌合するように、下面が平らで側面が上に向けて広が
るテーパを有した形状に形成されており、このコネクタ
２３に設けられた端子２４は、管継手１の端子１４に形
成されている雌ねじ１４１と螺合可能が雄ねじ２４１
（特許請求の範囲の凸部に対応する）を有しており、こ
の雄ねじ２４１を除いた部分が、このコネクタ２３の下
面のほぼ中央に埋め込まれている。The connector 23 has the connector fitting portion 13
The connector 24 has a flat bottom surface and a side surface that tapers upward so that the terminal 24 provided on the connector 23 is formed on the terminal 14 of the pipe joint 1. Male screw 241 that can be screwed into the female screw 141
(Corresponding to the convex portion in the claims), and the portion excluding the male screw 241 is embedded in substantially the center of the lower surface of the connector 23.
【００２０】前記ゴムリング３は、前記コネクタ２３に
設けられた端子２４の雄ねじ２４１を孔に通すことがで
き、かつ、この雄ねじ２４１と前記コネクタ嵌合部１３
に設けられた端子１４の雌ねじ１４１とを螺合させた時
に、前記コネクタ嵌合部１３の底とコネクタ２３の下面
との間で押し潰される大きさに形成されている。The rubber ring 3 allows the male screw 241 of the terminal 24 provided on the connector 23 to pass through the hole, and the male screw 241 and the connector fitting portion 13
It is formed in such a size that it is crushed between the bottom of the connector fitting portion 13 and the lower surface of the connector 23 when the female screw 141 of the terminal 14 provided on the connector 14 is screwed.
【００２１】また、前記スプリングワッシャ４は、前記
雄ねじ２４１を前記ゴムリング３の孔に通した時に、雄
ねじ２４１とゴムリング３との間に納まる大きさに形成
されている。Further, the spring washer 4 is formed in such a size that it can be fitted between the male screw 241 and the rubber ring 3 when the male screw 241 is passed through the hole of the rubber ring 3.
【００２２】次に、上記した標識装置の使用方法につい
て説明する。Next, a method of using the above marking device will be described.
【００２３】まず、管継手１の受口部１１内に熱可塑性
樹脂管Ｐ，Ｐの端部を挿入し、管継手１の端子１４に図
示を省略した電気融着装置の電力供給ラインを接続し、
所定時間発熱コイル１２に電力を供給する。これによっ
て、発熱コイル１２が発熱して受口部１１の内周面と管
Ｐの外周面とが融着し、管継手１と管Ｐとが接合され
る。First, the ends of the thermoplastic resin pipes P, P are inserted into the receptacle 11 of the pipe joint 1, and the terminal 14 of the pipe joint 1 is connected to a power supply line of an electric fusion device (not shown). Then
Electric power is supplied to the heating coil 12 for a predetermined time. As a result, the heating coil 12 generates heat and the inner peripheral surface of the receiving portion 11 and the outer peripheral surface of the pipe P are fused, and the pipe joint 1 and the pipe P are joined.
【００２４】前記管Ｐの接続作業が完了したら、管継手
１の端子１４から電力供給ラインを取り外し、次に、管
継手１のコネクタ嵌合部１３とアダプター２のコネクタ
２３との間でゴムリング３とスプリングワッシャ４を押
し潰しながら、アダプタ２のコネクタ２３を管継手１の
コネクタ嵌合部１３に嵌合させると共に、コネクタ２３
に設けられている端子２４の雄ねじ２４１とコネクタ嵌
合部１３に設けられている端子１４の雌ねじ１４１とを
螺合させて両端子１４，２４を接触させる。When the work of connecting the pipe P is completed, the power supply line is removed from the terminal 14 of the pipe joint 1, and then the rubber ring is inserted between the connector fitting portion 13 of the pipe joint 1 and the connector 23 of the adapter 2. While crushing 3 and the spring washer 4, the connector 23 of the adapter 2 is fitted into the connector fitting portion 13 of the pipe joint 1, and the connector 23
The male screw 241 of the terminal 24 provided on the connector 14 and the female screw 141 of the terminal 14 provided on the connector fitting portion 13 are screwed together to bring the terminals 14 and 24 into contact with each other.
【００２５】この時、図３に示すように、コネクタ嵌合
部１３に対する端子１４の取り付け精度やコネクタ２３
に対する端子２４の取り付け精度等が悪く、管継手１の
コネクタ嵌合部１３とアダプタ２のコネクタ２３との間
に隙間ａが生じても、コネクタ嵌合部１３とコネクタ２
３との間で押し潰されるゴムリング３によって止水され
るので、端子１４，２４が水に濡れてすぐに腐食するこ
とはない。At this time, as shown in FIG. 3, the accuracy with which the terminal 14 is attached to the connector fitting portion 13 and the connector 23.
Even if the mounting accuracy of the terminal 24 to the connector is poor and a gap a occurs between the connector fitting portion 13 of the pipe joint 1 and the connector 23 of the adapter 2, the connector fitting portion 13 and the connector 2
Since the water is stopped by the rubber ring 3 that is crushed between the terminals 14 and 24, the terminals 14 and 24 do not get wet and corrode immediately.
【００２６】また、雌ねじ１４１と雄ねじ２４１の螺合
が甘くても、ゴムリング３とスプリングワッシャ４の弾
性が雌ねじ１４１と雄ねじ２４１との密着を高める方向
に作用するので、両端子１４，２４の接触が確実なもの
となる。Even if the female screw 141 and the male screw 241 are loosely screwed together, the elasticity of the rubber ring 3 and the spring washer 4 acts in the direction of increasing the close contact between the female screw 141 and the male screw 241. Secure contact.
【００２７】更に、コネクタ嵌合部１３の側面とコネク
タ２３の側面とにテーパを設けたので、コネクタ嵌合部
１３とコネクタ２３の大きさに製造誤差があったとして
も、コネクタ嵌合部１３の側面とコネクタ２３の側面と
が密着して、コネクタ嵌合部１３とコネクタ２３との間
に隙間ａが生じ難くなっている。Further, since the side surface of the connector fitting portion 13 and the side surface of the connector 23 are tapered, even if there is a manufacturing error in the size of the connector fitting portion 13 and the connector 23, the connector fitting portion 13 The side surface of the connector 23 and the side surface of the connector 23 are in close contact with each other, and a gap a is less likely to be formed between the connector fitting portion 13 and the connector 23.
【００２８】このようにしてアダプター２を管継手１と
一緒に地中に埋設させて施工を完了する。In this way, the adapter 2 and the pipe joint 1 are embedded in the ground to complete the construction.
【００２９】そして、後日、地中埋設管の埋設位置の探
知を行なう場合には、図４に示すように、探知器Ｓを地
表面で走査させ、その探知機Ｓから共振体２１を励振す
る励振信号を送信すると、管継手１の発熱コイル１２が
アンテナコイルとなって励振信号を受信し、それによっ
て共振体２１が振動する。そして、励振信号を停止させ
た後、共振体２１に残留している共振信号が発熱コイル
１２から放出され、これが探知器Ｓで受信されるので、
管継手１の埋設位置を探知できる。Then, when the buried position of the underground buried pipe is to be detected at a later date, as shown in FIG. 4, the detector S is scanned on the ground surface and the resonator 21 is excited from the detector S. When the excitation signal is transmitted, the heating coil 12 of the pipe joint 1 functions as an antenna coil to receive the excitation signal, and the resonator 21 vibrates accordingly. Then, after the excitation signal is stopped, the resonance signal remaining in the resonator 21 is emitted from the heating coil 12 and is received by the detector S.
The buried position of the pipe joint 1 can be detected.
【００３０】つまり、本実施例の地中埋設管標識装置に
あっては、ゴムリング３によってコネクタ嵌合部１３と
コネクタ２３との間を止水できるので、端子１４，２４
の取り付け精度等によってコネクタ嵌合部１３とコネク
タ２３の間に隙間ａが生じても、端子１４，２４が水に
濡れて腐食するのを防止できる。また、管継手１側の端
子１４とアダプター２側の端子２４とを確実に密着させ
ることができるので、アダプター２と管継手１とを確実
に標識装置として機能させることができる。That is, in the underground buried pipe marking device of this embodiment, since the water can be stopped between the connector fitting portion 13 and the connector 23 by the rubber ring 3, the terminals 14 and 24 are provided.
Even if the clearance a is generated between the connector fitting portion 13 and the connector 23 due to the mounting accuracy of the above, it is possible to prevent the terminals 14 and 24 from being wet and corroded by water. Further, since the terminal 14 on the side of the pipe joint 1 and the terminal 24 on the side of the adapter 2 can be surely brought into close contact with each other, the adapter 2 and the pipe joint 1 can surely function as a marker device.
【００３１】また、共振体２１に共振周波数の異なるも
のをいくつか用意しておき、その内の適当なものを選ん
で管継手１に接続することで、埋設箇所に応じて共振周
波数を変えるといったことが簡単に行なえる。Further, by preparing some resonators 21 having different resonance frequencies and selecting an appropriate one of them and connecting it to the pipe joint 1, the resonance frequency is changed according to the buried portion. It's easy to do.
【００３２】次に、図５ならびに図６に基づいて、第２
実施例の地中埋設管標識装置の構成を説明する。なお、
本実施例は、コネクタ嵌合部１３に設けられている端子
１４ａならびにコネクタ２３に設けられている端子２４
ａと、コネクタ嵌合部１３とコネクタ２３との間に設け
られている構成が第１実施例と異なっているので、それ
らの構成、ならびに、それらの構成が発揮する作用・効
果についてのみ説明する。Next, based on FIGS. 5 and 6, the second
The configuration of the underground buried pipe marking device of the embodiment will be described. In addition,
In this embodiment, the terminal 14 a provided on the connector fitting portion 13 and the terminal 24 provided on the connector 23 are provided.
Since "a" and the structure provided between the connector fitting portion 13 and the connector 23 are different from those of the first embodiment, only those structures and the actions and effects exerted by these structures will be described. .
【００３３】コネクタ２３に設けられている端子２４ａ
には、弾性を有する凸部２４１ａが設けられており、コ
ネクタ嵌合部１３に設けられている端子１４ａには、前
記凸部２４１ａを挿入可能な凹部１４１ａが設けられて
いる。なお、前記凸部２４１ａは、中空状の金属筒等に
よって形成されている。また、コネクタ２３の側面に
は、ブチルゴムなどの粘着性の高いシール材５が２〜３
周にわたって連続して塗布されている。Terminal 24a provided on the connector 23
Is provided with an elastic convex portion 241a, and the terminal 14a provided in the connector fitting portion 13 is provided with a concave portion 141a into which the convex portion 241a can be inserted. The convex portion 241a is formed of a hollow metal cylinder or the like. In addition, on the side surface of the connector 23, a sealing material 5 having high adhesiveness such as butyl rubber is attached to the side of
It is applied continuously over the circumference.
【００３４】つまり、本実施例の地中埋設管標識装置で
は、コネクタ嵌合部１３に対する端子１４ａの取り付け
精度やコネクタ２３に対する端子２４ａの取り付け精度
等が悪くても、管継手１ａのコネクタ嵌合部１３とアダ
プター２ａのコネクタ２３を嵌合させると共に、コネク
タ嵌合部１３に設けられている端子１４ａの凸部１４１
ａをコネクタ２３に設けられている端子２４ａの凹部２
４１ａに挿入させた時に、図６に示すように、凸部１４
１ａが弾性変形することによってその誤差が吸収される
ので、管継手１ａのコネクタ嵌合部１３とアダプタ２ａ
のコネクタ２３の間がシール材５によって確実に止水さ
れ、水が浸入する隙間が生じることがない。That is, in the underground buried pipe marking apparatus of the present embodiment, even if the mounting accuracy of the terminal 14a to the connector fitting portion 13 or the mounting accuracy of the terminal 24a to the connector 23 is poor, the connector fitting of the pipe joint 1a is performed. The portion 13 and the connector 23 of the adapter 2a are fitted together, and the protrusion 141 of the terminal 14a provided in the connector fitting portion 13 is fitted.
a is a concave portion 2 of the terminal 24a provided on the connector 23
As shown in FIG. 6, the protrusion 14
Since the error is absorbed by the elastic deformation of 1a, the connector fitting portion 13 of the pipe joint 1a and the adapter 2a are absorbed.
The space between the connectors 23 is surely stopped by the sealing material 5, and there is no gap for water to enter.
【００３５】以上、本発明の実施例を図面により詳述し
てきたが、具体的な構成はこの実施例に限られるもので
はなく、本発明の要旨を逸脱しない範囲における設計の
変更等があっても本発明に含まれる。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention.
【００３６】例えば、第１実施例では、コネクタに設け
た端子に雄ねじを設け、コネクタ嵌合部に設けた端子に
雌ねじを設けたが、雄ねじの代わりに、弾性変形可能な
爪を外周に備えた凸部を設け、雌ねじの代わりに、前記
爪が引っ掛かる状態で前記凸部を挿入可能な凹部を設け
るなどしてもよい。For example, in the first embodiment, the terminal provided on the connector is provided with the male screw and the terminal provided on the connector fitting portion is provided with the female screw. However, instead of the male screw, an elastically deformable claw is provided on the outer periphery. Alternatively, a convex portion may be provided, and instead of the female screw, a concave portion into which the convex portion can be inserted while the claw is caught may be provided.
【００３７】また、第１実施例では、スプリングワッシ
ャとシール材（ゴムリング）とを併用したが、シール材
が十分に弾性を有するものであれば、スプリングワッシ
ャを用いなくても雌ねじと雄ねじとの密着性を高めるこ
とができる。Further, in the first embodiment, the spring washer and the seal material (rubber ring) are used together, but if the seal material has sufficient elasticity, the female screw and the male screw can be used without using the spring washer. The adhesion of can be improved.
【００３８】更に、第２実施例では、コネクタの側面に
シール材を塗布したが、シール材はコネクタ嵌合部の側
面に塗布してもよい。Further, in the second embodiment, the seal material is applied to the side surface of the connector, but the seal material may be applied to the side surface of the connector fitting portion.
【００３９】[0039]
【発明の効果】以上説明したように、本発明請求項１記
載の地中埋設管標識装置にあっては、シール材によって
コネクタ嵌合部とコネクタの間を止水できるので、端子
の取り付け精度等によってコネクタ嵌合部とコネクタの
間に隙間が生じても、端子が水に濡れて腐食するのを防
止できるという効果が得られる。As described above, in the underground buried pipe marking apparatus according to the first aspect of the present invention, since the water can be stopped between the connector fitting portion and the connector by the sealing material, the terminal mounting accuracy can be improved. Even if a gap is created between the connector fitting portion and the connector due to the above reasons, the terminal can be prevented from getting wet and corroding.
【００４０】また、本発明請求項２記載の地中埋設管標
識装置にあっては、端子の取り付け精度が悪いことなど
によって生じる誤差を吸収することができるので、コネ
クタ嵌合部とコネクタの間に隙間が生じるのを防止で
き、それによって、端子が水に濡れて腐食するのを防止
できるという効果が得られる。Further, in the underground buried pipe marking device according to the second aspect of the present invention, since an error caused by poor terminal mounting accuracy can be absorbed, the space between the connector fitting portion and the connector can be absorbed. It is possible to prevent a gap from being formed in the terminal, and thereby to prevent the terminal from being wet and corroded by water.
【図１】第１実施例の地中埋設管標識装置を示す一部切
り欠き正面図である。FIG. 1 is a partially cutaway front view showing an underground pipe marking device according to a first embodiment.
【図２】第１実施例の地中埋設管標識装置の要部を示す
分解図である。FIG. 2 is an exploded view showing a main part of the underground buried pipe marking device according to the first embodiment.
【図３】第１実施例の地中埋設管標識装置の作用説明図
である。FIG. 3 is an operation explanatory view of the underground buried pipe marking device of the first embodiment.
【図４】第１実施例の地中埋設管の探知方法を示す概略
図である。FIG. 4 is a schematic view showing a method of detecting an underground buried pipe according to the first embodiment.
【図５】第２実施例の地中埋設管標識装置の要部を示す
斜視図である。FIG. 5 is a perspective view showing a main part of an underground buried pipe marking device according to a second embodiment.
【図６】第２実施例の地中埋設管標識装置の作用説明図
である。FIG. 6 is an operation explanatory view of the underground buried pipe marking device of the second embodiment.
１ 管継手 １１ 受口部 １２ 発熱コイル １３ コネクタ嵌合部 １４ 端子 ２ アダプター ２１ 共振体 ２２ 接続ケーブル ２３ コネクタ ２４ 端子 ３ ゴムリング DESCRIPTION OF SYMBOLS 1 Pipe joint 11 Receptacle part 12 Heating coil 13 Connector fitting part 14 Terminal 2 Adapter 21 Resonator 22 Connection cable 23 Connector 24 terminal 3 Rubber ring
Claims (2)
発熱コイルが前記受口部の周方向に旋回するように埋め
込まれ、外面にコネクタ嵌合部が設けられ、このコネク
タ嵌合部に前記発熱コイルと接続された端子が設けられ
ている熱可塑性樹脂製の管継手と、 共振体に一対の接続ケーブルを取り付けると共に、各接
続ケーブルの先端に前記コネクタ嵌合部と嵌合可能なコ
ネクタを設け、このコネクタの内部に、前記接続ケーブ
ルと接続された端子が設けられているアダプターとを備
えている地中埋設管標識装置において、 前記コネクタ嵌合部の端子と前記コネクタの端子の一方
に凸部が設けられ、他方に前記凸部を挿入可能な凹部が
設けられ、かつ、前記凸部を前記凹部に挿入させた時に
コネクタ嵌合部とコネクタとの間で押し潰され、コネク
タ嵌合部とコネクタの間を止水可能なシール材を備えて
いることを特徴とする地中埋設管標識装置。1. A heating coil is embedded in a receiving portion for receiving an end portion of a thermoplastic resin tube so as to rotate in a circumferential direction of the receiving portion, and a connector fitting portion is provided on an outer surface thereof. A thermoplastic resin pipe joint with a terminal connected to the heating coil is attached to the part, and a pair of connection cables can be attached to the resonator, and the connector fitting part can be fitted to the tip of each connection cable In the underground buried pipe marking device, a connector is provided, and an adapter in which a terminal connected to the connection cable is provided inside the connector, a terminal of the connector fitting portion and a terminal of the connector One is provided with a convex portion, the other is provided with a concave portion into which the convex portion can be inserted, and when the convex portion is inserted into the concave portion, is crushed between the connector fitting portion and the connector, Connection Underground pipes labeling apparatus characterized in that it comprises a water stop can sealing material between the data fitting portion and the connector.
発熱コイルが前記受口部の周方向に旋回するように埋め
込まれ、外面にコネクタ嵌合部が設けられ、このコネク
タ嵌合部に前記発熱コイルと接続された端子が設けられ
ている熱可塑性樹脂製の管継手と、 共振体に一対の接続ケーブルを取り付けると共に、各接
続ケーブルの先端に前記コネクタ嵌合部と嵌合可能なコ
ネクタを設け、このコネクタの内部に、前記接続ケーブ
ルと接続された端子が設けられているアダプターとを備
えている地中埋設管標識装置において、 前記コネクタ嵌合部の端子と前記コネクタの端子の少な
くとも一方に弾性を有する凸部が設けられ、他方に前記
凸部を挿入可能な凹部が設けられていることを特徴とす
る地中埋設管標識装置。2. A heating coil is embedded in a receiving portion for receiving an end portion of a thermoplastic resin tube so as to rotate in a circumferential direction of the receiving portion, and a connector fitting portion is provided on an outer surface thereof. A thermoplastic resin pipe joint with a terminal connected to the heating coil and a pair of connection cables can be attached to the resonator, and the connector fitting part can be fitted to the tip of each connection cable In the underground buried pipe marking device, the connector is provided with a connector, and an adapter in which a terminal connected to the connection cable is provided inside the connector, the terminal of the connector fitting portion and the terminal of the connector. At least one is provided with an elastic convex portion, and the other is provided with a concave portion into which the convex portion can be inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28262293A JPH07134182A (en) | 1993-11-11 | 1993-11-11 | Underground buried pipe labeling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28262293A JPH07134182A (en) | 1993-11-11 | 1993-11-11 | Underground buried pipe labeling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07134182A true JPH07134182A (en) | 1995-05-23 |
Family
ID=17654923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28262293A Pending JPH07134182A (en) | 1993-11-11 | 1993-11-11 | Underground buried pipe labeling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07134182A (en) |
-
1993
- 1993-11-11 JP JP28262293A patent/JPH07134182A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3783339B2 (en) | Ultrasonic beauty device | |
| JP2999423B2 (en) | Monitoring device for filling level of liquid in container | |
| JP2002048654A (en) | Sensor for detecting fluid temperature | |
| KR970066253A (en) | Vibration welding method of vehicle lamp and the vehicle lamp | |
| CN111917960A (en) | Camera with self-cleaning function and self-cleaning method thereof | |
| EP0881624B1 (en) | Ultrasonic sensor and its ultrasonic resonator | |
| JPH07134182A (en) | Underground buried pipe labeling device | |
| EP0394714A2 (en) | Identification device with inductive antenna coupling | |
| JP3879264B2 (en) | Ultrasonic sensor | |
| JPH0785110B2 (en) | Plastic tube marking device | |
| JP3573325B2 (en) | Mounting adapter for knocking detection sensor and knocking detection sensor unit using the same | |
| CN211061104U (en) | Novel pressure transmitter | |
| JPH0820522B2 (en) | Underground pipe marking device | |
| JP2823422B2 (en) | Connection structure of plastic buried pipe | |
| JPH09303660A (en) | Welded joint | |
| JP2000188800A (en) | Drip-proof type ultrasonic microphone | |
| JPH067582Y2 (en) | Cable connection device | |
| JP2008152371A (en) | Alarm device | |
| JP2001185305A (en) | Coaxial connector and electronics furnished with same | |
| JP2813566B2 (en) | Light emitting display | |
| JPH0448071Y2 (en) | ||
| JPH0755083A (en) | Connecting structure of terminal connector for electrodeposition | |
| JP2003053839A (en) | Method and apparatus for confirming insertion of connector during electric fusion-bonding | |
| JP2004159351A (en) | Ultrasonic sensor | |
| JPS6027939Y2 (en) | Piezoelectric level sensor |