JP4326800B2 - Water stop structure of covered wire - Google Patents

Water stop structure of covered wire Download PDF

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JP4326800B2
JP4326800B2 JP2002382555A JP2002382555A JP4326800B2 JP 4326800 B2 JP4326800 B2 JP 4326800B2 JP 2002382555 A JP2002382555 A JP 2002382555A JP 2002382555 A JP2002382555 A JP 2002382555A JP 4326800 B2 JP4326800 B2 JP 4326800B2
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water stop
electric wire
covered electric
water
upper member
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JP2004215403A (en
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哲郎 井出
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Yazaki Corp
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Yazaki Corp
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Priority to DE10349240A priority patent/DE10349240B4/en
Priority to US10/687,963 priority patent/US7030320B2/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Description

【０００１】
【発明の属する技術分野】
本発明は、芯線を被覆してなる被覆電線を、樹脂製の止水部材で挟持して超音波溶着することにより、被覆電線に止水を施すための被覆電線の構造に関する。
【０００２】
【従来の技術】
図６及び図７を参照すると、従来の被覆電線３０の止水構造として、被覆電線３０を図６中上下一対の樹脂製の止水部材３１で挟持するとともに、止水部材３１の図６中上方から超音波溶着ホーン３２により超音波を印加することにより、止水部材３１を被覆電線３０の芯線に溶着させて止水処理するものがある(下記特許文献１及び２参照)。
各止水部材３１は、超音波溶着後の被覆電線３０の芯線の広がり幅より大きくなるように形成される。これにより、超音波溶着の際、各止水部材３１の溶融樹脂が被覆電線３０の芯線間に充填され、止水性能が確保される。
【０００３】
【特許文献１】
特開平７−３２０８４２号公報
【特許文献２】
特開平１１−２５０９５２号公報
【０００４】
【発明が解決しようとする課題】
しかしながら、従来の止水部構造では、溶着する際に超音波振動エネルギーを溶着する部位に集中する構造を有していないために、超音波溶着に時間がかかり、コスト増大が避けられないという問題がある。
また、図８及び９に示したように機密性が乏しいために止水性能が低いという問題もある。
さらに、溶融した電線被覆が外にはみ出し、溶着部以外の電線被覆を傷つけるために、電線固着力や絶縁性が確保できないという問題がある。
【０００５】
本発明は、被覆電線の止水処理を確実に行うことができ、更に溶着時間の短縮を図ってコストを低減することができる被覆電線の止水構造を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明の請求項１記載の被覆電線の止水構造は、上側部材と、該上側部材との間に被覆電線を挟持可能な下側部材とからなる止水部材であって、芯線を被覆してなる前記被覆電線を、前記上側部材及び前記下側部材にそれぞれ設けられた樹脂製の一対の止水部で挟持して超音波溶着することにより、前記被覆電線に止水を施す被覆電線の止水構造において、前記止水部は前記被覆電線の軸方向と直交する軸線を有する略半円筒形状に形成されるとともに前記止水部材に形成され、前記下側部材に一方の係止部が設けられ、該係止部は、該係止部に対応して前記上側部材に設けられた他方の係止部にそれぞれ嵌合し、前記一方の係止部及び前記他方の係止部は、前記軸方向に沿うとともに前記止水部の両側に形成されていることを特徴とする。
【０００７】
前記構成の被覆電線の止水構造によれば、各止水構造の前記上側部材及び下側部材にそれぞれ係止部を設けたことで、超音波振動エネルギーが溶着部分に集中して伝達される。そのために、超音波エネルギーが効率良く伝達され、溶着に費やされる時間が短縮される。
また、係止部が止水部材の長手方向に沿うとともに、止水部に直交するように形成されることによって、止水部材に挟持された電線の被覆が超音波振動で溶けたときに、その被覆材料の溶融物が流れる方向を遮ることができるため、溶融物が外にはみ出すことが防止される。さらに溶着部以外の電線被覆を傷つけることなく溶着できる。
【０００９】
また、前記構成の被覆電線の止水構造によれば、止水部が略半円筒形状に形成されているので、この略半円筒形状の止水部上に被覆電線が配置され、上側部材の下面によってこの電線を挟むように保持して超音波溶着されるとき、超音波エネルギーが止水部の溶着部分に集中して効率良く伝達され、かつ被覆材料の溶融物が溶着部分から止水部に沿って確実に流れる。
【００１０】
また、請求項２に記載の被覆電線の止水構造によれば、前記係止部は、前記上側部材及び前記下側部材に嵌合するように設けられた凸部及び凹部であり、該凹部は、斜面部分によってさらに幅が減少され、底の部分にさらに幅の狭い溝部が形成されていることが好ましい。
【００１１】
前記構成の被覆電線の止水構造によれば、係止部を凸部及び凹部とすることによって機密性がさらに向上し、溶着時に溶けた電線被覆が外側にはみ出すことがないので、溶着部以外の電線被覆を損傷することなく溶着できるために、電線固着力及び絶縁性能を向上することができる。
【００１２】
また、請求項３に記載の被覆電線の止水構造によれば、前記下側部材の前記係止部の両側に一方の突起部及び受容部を設け、前記上側部材の前記係止部の両側に前記下側部材の前記突起部及び前記受容部に嵌合するように他方の突起部及び受容部が設けられていることを特徴とする。
【００１３】
前記構成の被覆電線の止水構造によれば、下側部材及び上側部材の係止部の両側にそれぞれに嵌合するように突起部及び受容部が形成される。したがって、止水構造の長手方向のずれが防止され、溶融した樹脂が被覆電線を傷つけることなく、溶着が完了する。
また、前記係止部の両側に前記突起部及び受容部を設けることで、前記係止部の構成と相まって超音波エネルギーをさらに効率よく溶着部に集中するように伝達することができる。
【００１４】
【発明の実施の形態】
以下、本発明の被覆電線の止水構造の実施形態を図１乃至図５に基づいて説明する。図１は本発明の一実施形態である被覆電線の止水構造を示す分解斜視図、図２は図１における止水構造の超音波溶着後の状態を示す斜視図、図３は図１における止水構造の断面図、（ａ）は被覆電線を挟持する前の状態を示す図１のＡ−Ａ断面図、（ｂ）は被覆電線を超音波溶着した状態を示す図２のＢ−Ｂ断面図である。また、図４（ａ）は図１における止水構造の係止部の嵌合前の断面図、図４（ｂ）は、止水構造の係止部の嵌合後の断面図、図５は本発明の他の実施形態の被覆電線の止水構造を示す斜視図である。
【００１５】
図１〜図５を参照すると、被覆電線１０の止水構造において、樹脂製の止水部材２０は、上側部材２１及び下側部材２２から構成されており、芯線１０ａ（図３）を被覆してなる被覆電線１０を、上側部材２１及び下側部材２２間に挟持した状態で、図示しない超音波溶着ホーンによって図２及び図３中上方から超音波を加振することにより、被覆電線１０に止水処理を施す。
【００１６】
止水部材２０の上側部材２１及び下側部材２２はそれぞれ、左右両側面に、被覆電線１０を案内する一対の電線案内溝２１ａ，２２ａが形成されるとともに、各電線案内溝２１ａ，２２ａ間の略中央には、被覆電線１０の芯線１０ａに超音波溶着される止水部２１ｂ，２２ｂが設けられている。
【００１７】
下側部材２２の側壁の上端面２３に上端面２３から上方に突出した凸部分２５が設けられている。下側部材２２の上端面２４には、溝形状の凹部分２６が形成されている。この凹部分２６は、図４（ａ）に示すように断面が斜面部分２６ａによってさらに幅が減少され、底の部分にさらに幅の狭い溝部分２９が形成されている。
【００１８】
上側部材２１には、これらの凸部分２５及び凹部分２６に対応し、凸部分２５と嵌合する凹部分２７、凸部分２８が形成されている。また、凸部分２５及び凹部分２６と凹部分２７及び凸部分２８とからなる係止部は、止水部材２０の長手方向にかつ、止水部２２ｂに直交するように形成されている。凸部分２５，２８は、障壁構造である。また、下側部材２２の止水部２２ｂは、止水部材２０の長手方向の軸線と直交する軸線を有する略半円筒体である。
【００１９】
次に本実施形態の作用を説明する。
被覆電線１０の止水構造において、止水部材２０は、上側部材２１及び下側部材２２間に止水する被覆電線１０を位置させ、上側部材２１及び下側部材２２の各電線案内溝２１ａ，２２ａに被覆電線１０を案内するとともに、上側部材２１の止水部２１ｂと下側部材２２の止水部２２ｂとの間で、各被覆電線１０を挟持する（図３（ａ）参照）。
【００２０】
この状態で、止水部材２０は、上側部材２１及び下側部材２２の図２及び図３中上面に上方から超音波溶着ホーンにより超音波振動が加振される。加振された止水部材２０は、上側部材２１の止水部２１ｂと下側部材２２の止水部２２ｂとの間で、挟持した被覆電線１０の被覆を溶かすとともに、各止水部２１ｂ，２２ｂも溶かされ、各被覆電線１０の芯線１０ａを各止水部２１ｂ，２２ｂに溶着される（図３（ｂ）参照）。これにより、各被覆電線１０が、芯線１０ａ間を伝って侵入する水を食い止める止水処理がなされる。
【００２１】
図４（ａ）は、上側部材２１と下側部材２２との嵌合溶着前の嵌合部分の断面図を示す。先ず、図４（ｂ）のように嵌合した後に、超音波溶着ホーンにより超音波振動が加振されると、上側部材２１の突起部２８の両縁部２８ａ及び２８ｂが斜面部分２６ａに当接した部分に振動が集中して効率良く溶着し、溶けた樹脂Ｐが溝部分２９に充填されて気密性がさらに向上する。
【００２２】
次に、図５を参照して本発明の被覆電線の止水構造の第２の実施形態を説明する。第１の実施形態と同じ部分には同じ参照符号を付して説明する。
本実施形態の被覆電線の止水部材２０によれば、上方樹脂部品及び下方樹脂部品３１，３１の縦ずれＬを防止して被覆電線１０の破損や芯線の露出を防止する（図９参照）。
【００２３】
止水部材２０の上側部材２１及び下側部材２２はそれぞれ、左右両側面に、被覆電線１０を案内する一対の電線案内溝２２ａが形成されるとともに、各電線案内溝２２ａ間の略中央には、被覆電線１０の芯線１０ａに超音波溶着される止水部２２ｂが設けられている。止水部２２ｂは、半円筒形状をしており、この半円筒形の上部に被覆電線１０が配置され、上側部材２１の下面によって、この電線を挟むように保持して超音波溶着されるようになっている。
【００２４】
第１の実施形態と同じように、下側部材２２の側壁の上端面２３に上端面２３から上方に突出した凸部分２５が設けられている。さらに下側部材２２の上端面２４には、溝形状の凹部分２６が形成されている。凸部分２５及び凹部分２６は、止水部材２０の長手方向にかつ、止水部２２ｂに直交するように形成されている。前記凸部分２５は、障壁構造である。
【００２５】
また、本実施形態によれば、凸部分２５と凹部分２６の長手方向軸線の前後に上側部材２１及び下側部材２２の縦ずれ防止用突起部３３と縦ずれ防止用受容部３４が設けられている。上側部材２１の突起部３３及び受容部３４は、下側部材２２の突起部３３及び受容部３４に対向するように配置されており、止水部材２０の長手方向軸線を中心にして対向するように配置されている。
【００２６】
このように構成された止水構造において、芯線１０ａ（図３）を被覆してなる被覆電線１０を、上側部材２１及び下側部材２２間に挟持した状態で、図示しない超音波溶着ホーンによって図５中上方から超音波を加振されることにより、被覆電線１０に止水処理を施す。
このように止水部材２０の上側部材２１と下側部材２２の縦ずれを防止することによって、電線が傷つけられることなく溶着されるために芯線の露出がなくなり、絶縁性能の信頼性が向上する。
さらに係止部と協働して超音波エネルギーを樹脂全体に効率よく伝達するため、縦ずれによって発生していた樹脂部品クラックを防止でき、外観上の問題も解消できる。
【００２７】
【発明の効果】
本発明の請求項１記載の被覆電線の止水構造は、下側部材に一方の係止部を設け、この係止部は、上側部材に設けられた他方の係止部にそれぞれ嵌合し、止水部材の長手方向に沿うとともに、止水部に直交するように形成されている。
したがって、超音波振動エネルギーを溶着部分に集中して伝達させることができ、超音波エネルギーが効率良く伝達され、溶着に費やされる時間が短縮される。
また、止水部材に挟持された電線の被覆が超音波振動で溶けたときに、その被覆材料の溶融物が流れる方向を遮ることができるため、外にはみ出すことが防止され、溶着部以外の電線被覆を傷つけることなく溶着できる。
【００２８】
また、請求項１に記載の被覆電線の止水構造によれば、止水部は、略半円筒形状に形成されている。
したがって、止水部上に被覆電線が配置され、上側部材の下面によってこの電線を挟むように保持して超音波溶着されるとき、超音波エネルギーが止水部の溶着部分に集中して効率良く伝達され、かつ被覆材料の溶融物が溶着部分から止水部に沿って確実に流れる。
【００２９】
また、請求項２に記載の被覆電線の止水構造によれば、係止部は、上側部材及び下側部材に嵌合するように設けられた凸部及び凹部であり、該凹部は、斜面部分によってさらに幅が減少され、底の部分にさらに幅の狭い溝部が形成されている。
したがって、係止部を凸部及び凹部とすることによって気密性がさらに向上し、溶着時に溶けた電線被覆が外側にはみ出すことがないので、溶着部以外の電線被覆を損傷することなく溶着できるために、電線固着力及び絶縁性能を向上することができる。
【００３０】
また、請求項３に記載の被覆電線の止水構造によれば、下側部材の係止部の両側に一方の突起部及び受容部が設けられ、上側部材の係止部の両側に前記下側部材の突起部及び受容部に嵌合するように他方の突起部及び受容部が設けられている。
したがって、下側部材及び上側部材の係止部の両側にそれぞれに嵌合するように突起部及び受容部が形成されるので、止水構造の長手方向のずれが防止され、溶融した樹脂が被覆電線を傷つけることなく、溶着が完了する。
また、係止部の両側に突起部及び受容部を設けることで、係止部の構成と協働して超音波エネルギーをさらに効率よく溶着部に集中するように伝達することができる。
【図面の簡単な説明】
【図１】本発明の一実施形態である被覆電線の止水構造を示す分解斜視図である。
【図２】図１における止水構造の超音波溶着後の状態を示す斜視図である。
【図３】図１における止水構造の断面図である。
【図４】図４（ａ）は、止水構造の止水部材の嵌合前の上側部材と下側部材を示す断面図であり、図４（ｂ）は、嵌合後の上側部材と下側部材の断面図である。
【図５】本発明の第２の実施形態の止水構造の下側部材を示す斜視図である。
【図６】従来の止水構造を示す分解斜視図である。
【図７】図６における止水構造の超音波溶着後の状態を示す斜視図である。
【図８】従来の止水構造の斜視図である。
【図９】従来の止水構造の側面図である。
【符号の説明】
１０ 被覆電線
２０ 止水部材
２１ 上側部材
２１ａ 電線案内溝
２１ａ 止水部
２２ 下側部材
２２ａ 電線案内溝
２２ｂ 止水部
２３，２４ 上端面
２５ 凸部分
２６ 凹部分
２６ａ 斜面部分
２９ 溝部分[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a covered electric wire for water-stopping a covered electric wire by sandwiching a covered electric wire formed by covering a core wire with a resin water-stopping member and ultrasonically welding the covered electric wire.
[0002]
[Prior art]
Referring to FIGS. 6 and 7, as a conventional water-stopping structure of the covered electric wire 30, the covered electric wire 30 is sandwiched between a pair of upper and lower resin water-stopping members 31 in FIG. 6 and the water-stopping member 31 in FIG. 6. There is one in which a water stop member 31 is welded to a core wire of a covered electric wire 30 by applying ultrasonic waves from above with an ultrasonic welding horn 32 (see Patent Documents 1 and 2 below).
Each water stop member 31 is formed to be larger than the spread width of the core wire of the covered electric wire 30 after ultrasonic welding. Thereby, at the time of ultrasonic welding, the molten resin of each water stop member 31 is filled between the core wires of the covered electric wire 30, and water stop performance is ensured.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-320842 [Patent Document 2]
Japanese Patent Laid-Open No. 11-250952
[Problems to be solved by the invention]
However, since the conventional waterstop structure does not have a structure that concentrates ultrasonic vibration energy at the site of welding when welding, there is a problem that it takes time for ultrasonic welding and an increase in cost is inevitable. There is.
Further, as shown in FIGS. 8 and 9, there is also a problem that the water stop performance is low due to poor confidentiality.
Furthermore, since the molten electric wire coating protrudes outside and damages the electric wire coating other than the welded portion, there is a problem that the electric wire fixing force and the insulation cannot be secured.
[0005]
An object of the present invention is to provide a water stop structure for a covered electric wire that can reliably perform the water stop treatment of the covered electric wire and further reduce the cost by reducing the welding time.
[0006]
[Means for Solving the Problems]
The water stop structure for a covered electric wire according to claim 1 of the present invention is a water stop member comprising an upper member and a lower member capable of sandwiching the covered electric wire between the upper member and covering the core wire. The covered electric wire is formed by sandwiching the covered electric wire between a pair of resin water-stop portions provided on the upper member and the lower member, respectively, and ultrasonically welding the covered electric wire. In the water stop structure, the water stop portion is formed in a substantially semi-cylindrical shape having an axis perpendicular to the axial direction of the covered electric wire and is formed in the water stop member, and one locking portion is provided on the lower member. Provided, the locking portion is fitted to the other locking portion provided on the upper member corresponding to the locking portion, respectively, the one locking portion and the other locking portion, It is formed on both sides of the water stop part along the axial direction.
[0007]
According to the water stop structure of the covered electric wire having the above-described configuration, the ultrasonic vibration energy is concentrated and transmitted to the welded portion by providing the upper member and the lower member of each water stop structure. . Therefore, ultrasonic energy is transmitted efficiently and the time spent for welding is shortened.
Further, when the locking portion is formed along the longitudinal direction of the water stop member and orthogonal to the water stop portion, the coating of the electric wire sandwiched between the water stop members is melted by ultrasonic vibration. Since the flow direction of the melt of the coating material can be blocked, the melt is prevented from protruding outside. Furthermore, welding can be performed without damaging the wire coating other than the welded portion.
[0009]
Further , according to the water stop structure of the covered electric wire having the above-described configuration, the water stop portion is formed in a substantially semi-cylindrical shape, and therefore, the covered electric wire is disposed on the substantially semi-cylindrical water stop portion, and the upper member When ultrasonic welding is performed by holding the electric wire between the lower surface and the ultrasonic welding, the ultrasonic energy is concentrated and efficiently transmitted to the welded portion of the water-stopping portion, and the melt of the coating material is transferred from the welded portion to the water-stopping portion. Surely flows along.
[0010]
Moreover, according to the water blocking structure of the covered electric wire according to claim 2 , the locking portion is a convex portion and a concave portion provided so as to be fitted to the upper member and the lower member, and the concave portion Preferably, the width is further reduced by the slope portion, and a narrower groove portion is formed in the bottom portion.
[0011]
According to the water stop structure of the covered electric wire having the above-described configuration, the secrecy is further improved by forming the engaging portion as the convex portion and the concave portion, and the electric wire covering melted at the time of welding does not protrude to the outside. Therefore, it is possible to improve the wire adhering force and the insulation performance.
[0012]
Moreover, according to the water stop structure of the covered wire according to claim 3 , one protrusion and a receiving portion are provided on both sides of the locking portion of the lower member, and both sides of the locking portion of the upper member are provided. The other protrusion and the receiving part are provided so as to be fitted to the protrusion and the receiving part of the lower member.
[0013]
According to the water stop structure of the covered electric wire having the above-described configuration, the protruding portion and the receiving portion are formed so as to be fitted to both sides of the locking portion of the lower member and the upper member, respectively. Therefore, the longitudinal stop of the water stop structure is prevented, and the welding is completed without the molten resin damaging the coated electric wire.
In addition, by providing the protrusion and the receiving part on both sides of the locking part, it is possible to transmit the ultrasonic energy so that it is more efficiently concentrated on the welded part in combination with the structure of the locking part.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a water stop structure for a covered electric wire according to the present invention will be described with reference to FIGS. 1 to 5. 1 is an exploded perspective view showing a water stop structure of a covered electric wire according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state after ultrasonic welding of the water stop structure in FIG. 1, and FIG. 1A is a cross-sectional view of the water stop structure, FIG. 1A is a cross-sectional view taken along the line AA in FIG. 1 before the covered electric wire is sandwiched, and FIG. 2B is a cross-sectional view taken along the line B-B in FIG. It is sectional drawing. 4A is a cross-sectional view before fitting the locking portion of the water-stopping structure in FIG. 1, FIG. 4B is a cross-sectional view after fitting the locking portion of the water-stopping structure, and FIG. These are perspective views which show the water stop structure of the covered electric wire of other embodiment of this invention.
[0015]
1 to 5, in the water stop structure of the covered electric wire 10, the resin water stop member 20 is composed of an upper member 21 and a lower member 22 and covers the core wire 10 a (FIG. 3). The covered electric wire 10 is sandwiched between the upper member 21 and the lower member 22, and an ultrasonic welding horn (not shown) is used to excite ultrasonic waves from above in FIG. 2 and FIG. Apply water stop treatment.
[0016]
Each of the upper member 21 and the lower member 22 of the water stop member 20 is formed with a pair of wire guide grooves 21a and 22a for guiding the covered wire 10 on both left and right side surfaces, and between the wire guide grooves 21a and 22a. Water stopping portions 21b and 22b that are ultrasonically welded to the core wire 10a of the covered electric wire 10 are provided at the approximate center.
[0017]
A convex portion 25 protruding upward from the upper end surface 23 is provided on the upper end surface 23 of the side wall of the lower member 22. A groove-shaped concave portion 26 is formed on the upper end surface 24 of the lower member 22. As shown in FIG. 4A, the concave portion 26 is further reduced in width by a slope portion 26a, and a narrower groove portion 29 is formed in the bottom portion.
[0018]
The upper member 21 is formed with a concave portion 27 and a convex portion 28 that fit into the convex portion 25 and correspond to the convex portion 25 and the concave portion 26. Moreover, the latching | locking part which consists of the convex part 25 and the recessed part 26, the recessed part 27, and the convex part 28 is formed so that it may orthogonally cross the water stop part 22b in the longitudinal direction of the water stop member 20. FIG. The convex portions 25 and 28 are barrier structures. In addition, the water stop portion 22 b of the lower member 22 is a substantially semi-cylindrical body having an axis orthogonal to the longitudinal axis of the water stop member 20.
[0019]
Next, the operation of this embodiment will be described.
In the water stopping structure of the covered electric wire 10, the water stopping member 20 positions the covered electric wire 10 that stops water between the upper member 21 and the lower member 22, and the electric wire guide grooves 21 a of the upper member 21 and the lower member 22, While covering the covered electric wire 10 to 22a, each covered electric wire 10 is clamped between the water stop part 21b of the upper side member 21, and the water stop part 22b of the lower side member 22 (refer Fig.3 (a)).
[0020]
In this state, the water-stopping member 20 is subjected to ultrasonic vibrations from above by the ultrasonic welding horn on the upper surfaces of the upper member 21 and the lower member 22 in FIGS. The water stop member 20 that has been vibrated dissolves the covering of the covered covered electric wire 10 between the water stop portion 21b of the upper member 21 and the water stop portion 22b of the lower member 22, and each water stop portion 21b, 22b is also melted, and the core wire 10a of each covered electric wire 10 is welded to each water stop portion 21b, 22b (see FIG. 3B). Thereby, the water stop process which makes each covered electric wire 10 stop the water which penetrates along between the core wires 10a is made.
[0021]
FIG. 4A is a cross-sectional view of a fitting portion before the upper member 21 and the lower member 22 are fitted and welded. First, after fitting as shown in FIG. 4 (b), when ultrasonic vibration is applied by the ultrasonic welding horn, both edges 28a and 28b of the protrusion 28 of the upper member 21 are brought into contact with the inclined portion 26a. Vibration concentrates on the contacted portion and is efficiently welded, and the melted resin P is filled in the groove portion 29 to further improve the airtightness.
[0022]
Next, with reference to FIG. 5, 2nd Embodiment of the water stop structure of the covered wire | conductor of this invention is described. The same parts as those in the first embodiment will be described with the same reference numerals.
According to the water blocking member 20 of the covered electric wire of the present embodiment, the longitudinal displacement L of the upper resin component and the lower resin component 31, 31 is prevented to prevent the covered electric wire 10 from being damaged and the core wire from being exposed (see FIG. 9). .
[0023]
Each of the upper member 21 and the lower member 22 of the water stop member 20 is formed with a pair of wire guide grooves 22a for guiding the covered wire 10 on both left and right side surfaces, and at the approximate center between the wire guide grooves 22a. A water stop portion 22b that is ultrasonically welded to the core wire 10a of the covered electric wire 10 is provided. The water stop portion 22b has a semi-cylindrical shape, and the covered electric wire 10 is disposed on the upper portion of the semi-cylindrical shape, and is held by the lower surface of the upper member 21 so as to sandwich the electric wire and is ultrasonically welded. It has become.
[0024]
Similar to the first embodiment, a convex portion 25 protruding upward from the upper end surface 23 is provided on the upper end surface 23 of the side wall of the lower member 22. Further, a groove-shaped concave portion 26 is formed on the upper end surface 24 of the lower member 22. The convex portion 25 and the concave portion 26 are formed in the longitudinal direction of the water stop member 20 and orthogonal to the water stop portion 22b. The convex portion 25 has a barrier structure.
[0025]
In addition, according to the present embodiment, the protrusions 33 for preventing vertical deviation and the receiving parts for preventing vertical deviation 34 of the upper member 21 and the lower member 22 are provided before and after the longitudinal axis of the convex portion 25 and the concave portion 26. ing. The protruding portion 33 and the receiving portion 34 of the upper member 21 are disposed so as to face the protruding portion 33 and the receiving portion 34 of the lower member 22, and are opposed to each other with the longitudinal axis of the water blocking member 20 as the center. Is arranged.
[0026]
In the water stop structure configured in this manner, the covered electric wire 10 covering the core wire 10a (FIG. 3) is sandwiched between the upper member 21 and the lower member 22, and is illustrated by an ultrasonic welding horn (not shown). 5 is subjected to a water stop treatment by applying ultrasonic waves from above.
In this way, by preventing the vertical displacement between the upper member 21 and the lower member 22 of the water stop member 20, the wires are welded without being damaged, so that the core wire is not exposed and the reliability of the insulation performance is improved. .
Furthermore, since the ultrasonic energy is efficiently transmitted to the entire resin in cooperation with the locking portion, it is possible to prevent the resin component cracks caused by the longitudinal shift and to solve the appearance problem.
[0027]
【The invention's effect】
Water-stop structure of the covered wires according to a first aspect of the present invention, one of the engaging portion provided on the lower side member, the engaging portion are respectively engaged with the other locking portion provided in the upper member In addition to being along the longitudinal direction of the water stop member, it is formed to be orthogonal to the water stop portion.
Therefore, the ultrasonic vibration energy can be concentrated and transmitted to the welding portion, the ultrasonic energy is efficiently transmitted, and the time spent for welding is shortened.
In addition, when the coating of the electric wire sandwiched between the water-stop members is melted by ultrasonic vibration, the direction in which the melt of the coating material flows can be blocked. Can be welded without damaging the wire coating.
[0028]
Moreover, according to the water stop structure of the covered wire according to claim 1 , the water stop portion is formed in a substantially semi-cylindrical shape.
Therefore, when the covered electric wire is arranged on the water stop portion and held by the lower surface of the upper member so that the electric wire is sandwiched and ultrasonic welding is performed, the ultrasonic energy is concentrated on the welded portion of the water stop portion and efficiently. The melt of the coating material is reliably transmitted from the welded portion along the water stop portion.
[0029]
Further, according to the water blocking structure of the covered electric wire according to claim 2 , the locking portion is a convex portion and a concave portion provided so as to be fitted to the upper member and the lower member, and the concave portion is a sloped surface. The width is further reduced by the portion, and a narrower groove portion is formed in the bottom portion.
Therefore, by making the locking part a convex part and a concave part, the airtightness is further improved, and since the wire coating melted at the time of welding does not protrude outside, it can be welded without damaging the wire coating other than the welded part. In addition, the wire adhering force and the insulation performance can be improved.
[0030]
Further , according to the water stopping structure for the covered electric wire according to claim 3 , the one protrusion and the receiving part are provided on both sides of the locking part of the lower member, and the lower part is provided on both sides of the locking part of the upper member. The other protrusion and the receiving part are provided so as to be fitted to the protrusion and the receiving part of the side member.
Accordingly, the protrusion and the receiving part are formed so as to be fitted to both sides of the engaging part of the lower member and the upper member, respectively, so that the longitudinal displacement of the water stop structure is prevented and the molten resin is covered. Welding is completed without damaging the wires.
In addition, by providing the protrusions and the receiving portions on both sides of the locking portion, it is possible to transmit the ultrasonic energy so as to concentrate on the welded portion more efficiently in cooperation with the configuration of the locking portion.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a water stop structure of a covered electric wire according to an embodiment of the present invention.
2 is a perspective view showing a state after ultrasonic welding of the water stop structure in FIG. 1. FIG.
FIG. 3 is a cross-sectional view of the water stop structure in FIG. 1;
FIG. 4 (a) is a cross-sectional view showing an upper member and a lower member before fitting of a water stop member of a water stop structure, and FIG. 4 (b) shows an upper member after fitting; It is sectional drawing of a lower side member.
FIG. 5 is a perspective view showing a lower member of a water stop structure according to a second embodiment of the present invention.
FIG. 6 is an exploded perspective view showing a conventional water stop structure.
7 is a perspective view showing a state after ultrasonic welding of the water stop structure in FIG. 6. FIG.
FIG. 8 is a perspective view of a conventional water stop structure.
FIG. 9 is a side view of a conventional water stop structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Coated electric wire 20 Water stop member 21 Upper member 21a Electric wire guide groove 21a Water stop part 22 Lower member 22a Electric wire guide groove 22b Water stop part 23, 24 Upper end surface 25 Convex part 26 Concave part 26a Slope part 29 Groove part

Claims (3)

上側部材と、該上側部材との間に被覆電線を挟持可能な下側部材とからなる止水部材であって、芯線を被覆してなる前記被覆電線を、前記上側部材及び前記下側部材にそれぞれ設けられた樹脂製の一対の止水部で挟持して超音波溶着することにより、前記被覆電線に止水を施す被覆電線の止水構造において、
前記止水部は前記被覆電線の軸方向と直交する軸線を有する略半円筒形状に形成されるとともに前記止水部材に形成され、
前記下側部材に一方の係止部が設けられ、該係止部は、該係止部に対応して前記上側部材に設けられた他方の係止部にそれぞれ嵌合し、
前記一方の係止部及び前記他方の係止部は、前記軸方向に沿うとともに前記止水部の両側に形成されていることを特徴とする被覆電線の止水構造。A water stop member comprising an upper member and a lower member capable of sandwiching a covered electric wire between the upper member, and the covered electric wire covering a core wire is connected to the upper member and the lower member. In the water stop structure of the covered electric wire that stops water on the covered electric wire by sandwiching between the pair of water stop portions made of resin and performing ultrasonic welding,
The water stop portion is formed in a substantially semi-cylindrical shape having an axis perpendicular to the axial direction of the covered electric wire and formed in the water stop member.
One locking portion is provided on the lower member, and the locking portion is fitted to the other locking portion provided on the upper member corresponding to the locking portion, respectively.
The said one latching | locking part and said other latching | locking part are formed in the both sides of the said water stop part while being along the said axial direction, The water stop structure of the covered electric wire characterized by the above-mentioned . 前記係止部は、前記上側部材及び前記下側部材にそれぞれ嵌合するように設けられた凸部及び凹部であり、該凹部は、斜面部分によってさらに幅が減少され、底の部分にさらに幅の狭い溝部が形成されていることを特徴とする請求項１に記載の被覆電線の止水構造。The locking portion is a convex portion and a concave portion provided so as to be fitted to the upper member and the lower member, respectively, and the concave portion is further reduced in width by the slope portion and further widened at the bottom portion. The water stop structure of the covered electric wire according to claim 1, wherein a narrow groove portion is formed. 前記下側部材の前記係止部の両側に一方の突起部と受容部とを設け、前記上側部材の前記係止部の両側に前記下側部材の前記突起部及び前記受容部に嵌合する他方の突起部と受容部が設けられていることを特徴とする請求項１又は２に記載の被覆電線の止水構造。One protrusion and a receiving part are provided on both sides of the locking part of the lower member, and the protruding part and the receiving part of the lower member are fitted on both sides of the locking part of the upper member. The water blocking structure for a covered electric wire according to claim 1, wherein the other protrusion and the receiving portion are provided.
JP2002382555A 2002-10-18 2002-12-27 Water stop structure of covered wire Expired - Fee Related JP4326800B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002382555A JP4326800B2 (en) 2002-12-27 2002-12-27 Water stop structure of covered wire
CNB2003101045711A CN1269260C (en) 2002-10-18 2003-10-18 Sealing-up structure of insulate line
DE10349240A DE10349240B4 (en) 2002-10-18 2003-10-20 Sealing arrangement for attachment to a jacketed cable
US10/687,963 US7030320B2 (en) 2002-10-18 2003-10-20 Water cutoff structure of covered wire

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JPH0628334Y2 (en) * 1986-07-23 1994-08-03 河西工業株式会社 Knob structure in automobile sun visor
JP3323335B2 (en) * 1994-04-01 2002-09-09 矢崎総業株式会社 Waterproofing method of insulated wire and waterproof structure of insulated wire
JP3311639B2 (en) * 1996-10-25 2002-08-05 矢崎総業株式会社 Insulated wire joint structure
JPH1158865A (en) * 1997-08-11 1999-03-02 Sony Corp Ultrasonic fused shell body
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