JP2004215403A - Water stop structure of sheathed wire - Google Patents

Water stop structure of sheathed wire Download PDF

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JP2004215403A
JP2004215403A JP2002382555A JP2002382555A JP2004215403A JP 2004215403 A JP2004215403 A JP 2004215403A JP 2002382555 A JP2002382555 A JP 2002382555A JP 2002382555 A JP2002382555 A JP 2002382555A JP 2004215403 A JP2004215403 A JP 2004215403A
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electric wire
water
lower member
covered electric
upper member
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JP4326800B2 (en
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Tetsuo Ide
哲郎 井出
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Yazaki Corp
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Yazaki Corp
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Priority to JP2002382555A priority Critical patent/JP4326800B2/en
Priority to CNB2003101045711A priority patent/CN1269260C/en
Priority to US10/687,963 priority patent/US7030320B2/en
Priority to DE10349240A priority patent/DE10349240B4/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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a water stop structure of a sheathed wire which can surely perform water shutoff treatment of the sheathed wire and reduce the cost by shortening welding time duration. <P>SOLUTION: In the water stop structure of a sheathed wire, a sheathed wire 10 which is constituted of an upper member 21 and a lower member 22 and whose core wire is coated is sandwiched with a pair of water shutoff members formed of resin which are arranged on the upper member 21 and the lower member 22, respectively, and subjected to ultrasonic welding, so that water shutoff treatment is performed to the sheathed wire. In the structure, a pair of latch parts are arranged on the lower member of the water stop structure and engaged with a pair of latch parts, respectively, which are arranged so as to correspond to the latch parts on the upper member. By the above structure, wave vibratory energy is concentrated and transmitted to a welding part, so that ultrasonic energy is transmitted efficiently, and time duration spent on welding is shortened. <P>COPYRIGHT: (C)2004,JPO&NCIPI

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、上側部材と下側部材とから成り、芯線を被覆してなる被覆電線を、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材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、前記止水構造の前記下側部材に一方の係止部を設け、前記係止部は、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す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。
【０００８】
本発明の請求項２に記載の被覆電線の止水構造によれば、前記係止部は、前記止水部の長手方向に沿うとともに、前記止水部材に直交するように形成されていることが好ましい。
【０００９】
前記構成の被覆電線の止水構造によれば、係止部が長手方向に止水部材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に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。
【００１０】
また、本発明の請求項３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、本発明の請求項４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、止水構造２０の長手方向にかつ、止水部材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、止水構造２０の長手方向にかつ、止水部材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、止水構造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、止水構造の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される。
したがって、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。
【００２８】
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、止水構造の長手方向に沿うとともに、止水部材に直交するように形成されている。
したがって、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に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。
【００２９】
また、請求項３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。
【００３０】
また、本発明の請求項４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]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a covered electric wire for holding water to the covered electric wire by sandwiching a covered electric wire formed by covering a core wire with a resin water-stopping member and performing ultrasonic welding.
[0002]
[Prior art]
Referring to FIGS. 6 and 7, as a conventional waterproof structure of the covered electric wire 30, the covered electric wire 30 is sandwiched between a pair of upper and lower resin waterproof members 31 in FIG. There is a type in which an ultrasonic wave is applied from above by an ultrasonic welding horn 32 to weld the water-stop member 31 to the core wire of the covered electric wire 30 to perform a water-stop process (see Patent Documents 1 and 2 below).
Each water blocking member 31 is formed so as to be larger than the spread width of the core wire of the covered electric wire 30 after the ultrasonic welding. Thereby, at the time of ultrasonic welding, the molten resin of each of the water stopping members 31 is filled between the core wires of the covered electric wires 30, and the water stopping performance is ensured.
[0003]
[Patent Document 1]
JP-A-7-320842 [Patent Document 2]
JP-A-11-250952
[Problems to be solved by the invention]
However, since the conventional water-blocking structure does not have a structure in which ultrasonic vibration energy is concentrated on a portion to be welded when welding, it takes time for ultrasonic welding, and a problem that cost increase cannot be avoided. There is.
Further, as shown in FIGS. 8 and 9, there is also a problem that the water blocking performance is low due to poor confidentiality.
Furthermore, since the melted 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 insulating property cannot be secured.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a waterproof structure for a covered electric wire which can surely perform a water stopping process on the covered electric wire, and can further reduce the welding time and reduce the cost.
[0006]
[Means for Solving the Problems]
The water blocking structure of a covered electric wire according to claim 1 of the present invention is composed of an upper member and a lower member, and a resin provided on the upper member and the lower member, respectively, with a covered electric wire covering a core wire. By sandwiching and ultrasonic welding between a pair of waterproof members made of stainless steel, in the waterproof structure of the covered electric wire for stopping water on the covered electric wire, one of the locking portions is provided on the lower member of the waterproof structure. And the engaging portions are respectively fitted to the other engaging portions provided on the upper member.
[0007]
According to the waterproof 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 locking portions on the upper member and the lower member of each of the waterproof structures. . Therefore, ultrasonic energy is transmitted efficiently, and the time spent for welding is reduced.
[0008]
According to the water blocking structure of the covered electric wire according to claim 2 of the present invention, the locking portion is formed so as to extend along a longitudinal direction of the water blocking portion and to be orthogonal to the water blocking member. Is preferred.
[0009]
According to the waterproof structure of the covered electric wire having the above-described configuration, the locking portion is formed so as to be orthogonal to the water-stopping member in the longitudinal direction, so that the coating of the electric wire held between the water-stopping members is melted by the ultrasonic vibration. In this case, the direction in which the melt of the coating material flows can be blocked, so that the melt is prevented from protruding outside. Furthermore, welding can be performed without damaging the wire coating other than the welded portion.
[0010]
Further, according to the water blocking structure of the covered electric wire according to claim 3 of the present invention, 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. Is preferred.
[0011]
According to the waterproof structure of the covered electric wire having the above-described configuration, the locking portion is formed as a convex portion and a concave portion, so that the confidentiality is further improved, and the wire coating melted at the time of welding does not protrude to the outside. Can be welded without damaging the electric wire coating, so that the electric wire fixing force and the insulation performance can be improved.
[0012]
Further, according to the waterproof structure of the covered electric wire according to claim 4 of the present invention, one protrusion and a receiving portion are provided on both sides of the locking portion of the lower member, and the locking of the upper member is performed. The other protrusion and the receiving portion are provided on both sides of the portion so as to be fitted to the protrusion and the receiving portion of the lower member.
[0013]
According to the waterproof structure of the covered electric wire having the above-described configuration, the protrusion and the receiving portion are formed so as to be fitted on both sides of the locking portion of the lower member and the upper member, respectively. Therefore, displacement of the water stopping structure in the longitudinal direction is prevented, and the welding is completed without the molten resin damaging the coated electric wire.
Further, by providing the protrusions and the receiving portions on both sides of the locking portion, the ultrasonic energy can be transmitted so as to be more efficiently concentrated on the welding portion in combination with the configuration of the locking portion.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a waterproof structure of a covered electric wire of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is an exploded perspective view showing a water stopping 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 stopping structure in FIG. 1, and FIG. FIG. 2A is a cross-sectional view of the water-stop structure, FIG. 1A is a cross-sectional view taken along the line AA of FIG. 1 showing a state before holding the coated electric wire, and FIG. It is sectional drawing. 4A is a cross-sectional view of the water stopping structure in FIG. 1 before the engagement of the locking portion, FIG. 4B is a cross-sectional view of the water stopping structure after the engagement of the locking portion, and FIG. FIG. 6 is a perspective view showing a water blocking structure of a covered electric wire according to another embodiment of the present invention.
[0015]
Referring to FIGS. 1 to 5, in the water stopping structure of the covered electric wire 10, a resin water stopping member 20 includes an upper member 21 and a lower member 22 and covers the core wire 10 a (FIG. 3). In a state where the covered electric wire 10 is sandwiched between the upper member 21 and the lower member 22, ultrasonic waves are applied from above in FIGS. Water treatment is performed.
[0016]
The upper member 21 and the lower member 22 of the water stopping member 20 are formed with a pair of wire guide grooves 21a and 22a for guiding the covered wire 10 on both left and right side surfaces, respectively, and between the wire guide grooves 21a and 22a. At substantially the center, there are provided water stop portions 21b and 22b which are ultrasonically welded to the core wire 10a of the covered electric wire 10.
[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 in the upper end surface 24 of the lower member 22. As shown in FIG. 4 (a), the width of the concave portion 26 is further reduced by the slope portion 26a, and a narrower groove portion 29 is formed at the bottom.
[0018]
The upper member 21 is formed with a concave portion 27 and a convex portion 28 which correspond to the convex portion 25 and the concave portion 26 and are fitted with the convex portion 25. In addition, the locking portion including the convex portion 25 and the concave portion 26 and the concave portion 27 and the convex portion 28 is formed in the longitudinal direction of the water blocking structure 20 and perpendicular to the water blocking member 22b. The convex portions 25, 28 have a barrier structure. Further, the water stopping portion 22 b of the lower member 22 is a substantially semi-cylindrical body having an axis perpendicular to the longitudinal axis of the water stopping member 20.
[0019]
Next, the operation of the present 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 respective wire guide grooves 21 a of the upper member 21 and the lower member 22. The insulated wire 10 is guided to 22a, and each insulated wire 10 is sandwiched between the water stopping portion 21b of the upper member 21 and the water stopping portion 22b of the lower member 22 (see FIG. 3A).
[0020]
In this state, ultrasonic vibration is applied to the water blocking member 20 from above by the ultrasonic welding horn on the upper surfaces of the upper member 21 and the lower member 22 in FIGS. 2 and 3. The vibrated water-stopping member 20 melts the coating of the covered electric wire 10 sandwiched between the water-stopping portion 21b of the upper member 21 and the water-stopping portion 22b of the lower member 22, and at the same time, each of the water-stopping portions 21b, 22b is also melted, and the core wire 10a of each covered electric wire 10 is welded to each of the water stopping portions 21b and 22b (see FIG. 3B). Thereby, each coated electric wire 10 is subjected to a water stopping process for stopping water entering between the core wires 10a.
[0021]
FIG. 4A is a cross-sectional view of a fitting portion of the upper member 21 and the lower member 22 before fitting welding. 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 projection 28 of the upper member 21 are brought into contact with the slope 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, a second embodiment of the waterproof structure for a covered electric wire of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are described with the same reference numerals.
According to the water-stopping 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, thereby preventing the damage of the covered electric wire 10 and the exposure of the core wire (see FIG. 9). .
[0023]
Each of the upper member 21 and the lower member 22 of the water stopping member 20 has a pair of wire guide grooves 22a for guiding the covered wire 10 on both left and right side surfaces, and a substantially central portion between the wire guide grooves 22a. A water blocking portion 22b is provided which is ultrasonically welded to the core wire 10a of the covered electric wire 10. The water stopping portion 22b has a semi-cylindrical shape, and the covered electric wire 10 is arranged 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 subjected to ultrasonic welding. It has become.
[0024]
As in the first embodiment, a convex portion 25 projecting 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 blocking structure 20 and perpendicular to the water blocking member 22b. The convex portion 25 has a barrier structure.
[0025]
In addition, according to the present embodiment, the vertical deviation preventing protrusion 33 and the vertical deviation preventing receiving part 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 arranged so as to face the protruding portion 33 and the receiving portion 34 of the lower member 22, and face each other around the longitudinal axis of the water blocking structure 20. Are located in
[0026]
In the water blocking structure thus configured, the coated electric wire 10 covering the core wire 10a (FIG. 3) is sandwiched between the upper member 21 and the lower member 22 by an ultrasonic welding horn (not shown). The ultrasonic wave is applied to the covered electric wire 10 from above in the inside 5 to perform a water stopping process on the covered electric wire 10.
By preventing the vertical displacement of the upper member 21 and the lower member 22 of the water stopping member 20 in this manner, the electric wires are welded without being damaged, so that the core wire is not exposed, and the reliability of the insulation performance is improved. .
In addition, since the ultrasonic energy is efficiently transmitted to the entire resin in cooperation with the locking portion, cracks in the resin component caused by the vertical displacement can be prevented, and problems in appearance can be solved.
[0027]
【The invention's effect】
In the waterproof structure for a covered electric wire according to claim 1 of the present invention, one locking portion is provided on a lower member of the water blocking structure, and the locking portion is provided on the other locking portion provided on the upper member. Each is fitted.
Therefore, the wave vibration energy can be intensively transmitted to the welding portion, the ultrasonic energy is efficiently transmitted, and the time spent for welding is reduced.
[0028]
According to the water-stop structure of the covered electric wire of the second aspect, the locking portion is formed so as to extend along the longitudinal direction of the water-stop structure and to be orthogonal to the water-stop member.
Therefore, when the coating of the electric wire sandwiched by the water stopping member is melted by the ultrasonic vibration, it can be prevented from protruding to the outside because the direction in which the melt of the coating material flows can be blocked, and the portion other than the welded portion is prevented. It can be welded without damaging the wire coating.
[0029]
Further, according to the water blocking structure of the covered electric wire of the third aspect, the locking portion is the convex portion and the concave portion provided so as to be fitted to the upper member and the lower member.
Therefore, the confidentiality is further improved by forming the locking portion as the convex portion and the concave portion, and the wire coating melted at the time of welding does not protrude to the outside, so that the wire coating other than the welded portion can be welded without being damaged. In addition, the electric wire fixing force and the insulation performance can be improved.
[0030]
According to the waterproof structure for a covered electric wire according to claim 4 of the present invention, one protrusion and the 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. The other projection and the receiving portion are provided so as to be fitted to the projection and the receiving portion of the lower member.
Therefore, the protrusion and the receiving portion are formed so as to fit on both sides of the locking portion of the lower member and the upper member, respectively, so that the water stop structure is prevented from shifting in the longitudinal direction, and the molten resin is covered. The welding is completed without damaging the wires.
In addition, by providing the protrusions and the receiving portions on both sides of the locking portion, the ultrasonic energy can be transmitted to the welding 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 waterproof 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 blocking structure in FIG. 1;
FIG. 3 is a cross-sectional view of the water stop structure in FIG.
4A is a cross-sectional view showing an upper member and a lower member before fitting of a water blocking member of a water blocking structure, and FIG. 4B is a sectional view showing the upper member after fitting. It is sectional drawing of a lower member.
FIG. 5 is a perspective view showing a lower member of a water blocking structure according to a second embodiment of the present invention.
FIG. 6 is an exploded perspective view showing a conventional water blocking structure.
FIG. 7 is a perspective view showing a state after ultrasonic welding of the water blocking structure in FIG. 6;
FIG. 8 is a perspective view of a conventional water blocking structure.
FIG. 9 is a side view of a conventional water blocking structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Insulated 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 Depression part 26a Slope part 29 Groove part

Claims (4)

上側部材と下側部材とから成り、芯線を被覆してなる被覆電線を、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材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、前記止水構造の前記下側部材に一方の係止部を設け、該係止部は、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することを特徴とする被覆電線の止水構造。Ultrasonic welding is performed by sandwiching a covered electric wire composed of an upper member and a lower member and covering a core wire between a pair of resin waterproof members provided on the upper member and the lower member, respectively. Thus, in the water stopping structure of the coated electric wire for stopping water on the coated electric wire, the lower member of the water stopping structure is provided with one locking portion, and the locking portion is the other provided on the upper member. A waterproofing structure for a covered electric wire, wherein the waterproofing structure is fitted to each of the locking portions. 前記係止部は、前記止水部の長手方向に沿うとともに、前記止水部材に直交するように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 water stopping structure for a covered electric wire according to claim 1, wherein the locking portion is formed so as to extend along a longitudinal direction of the water stopping portion and to be orthogonal to the water stopping member. 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ることを特徴とする請求項１または２に記載の被覆電線の止水構造。The water stopping structure for a covered electric wire according to claim 1, wherein 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. 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から３のいずれかに記載の被覆電線の止水構造。One projection and a receiving portion are provided on both sides of the locking portion of the lower member, and fitted to the projections and the receiving portion of the lower member on both sides of the locking portion of the upper member. The waterproof structure for a covered electric wire according to any one of claims 1 to 3, 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
US10/687,963 US7030320B2 (en) 2002-10-18 2003-10-20 Water cutoff structure of covered wire
DE10349240A DE10349240B4 (en) 2002-10-18 2003-10-20 Sealing arrangement for attachment to a jacketed cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002382555A JP4326800B2 (en) 2002-12-27 2002-12-27 Water stop structure of covered wire

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JP2004215403A true JP2004215403A (en) 2004-07-29
JP4326800B2 JP4326800B2 (en) 2009-09-09

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318320U (en) * 1986-07-23 1988-02-06
JPH07322467A (en) * 1994-04-01 1995-12-08 Yazaki Corp Method of waterproofing covered cable and waterproof structure
JPH10189071A (en) * 1996-10-25 1998-07-21 Yazaki Corp Junction structure of covered wire
JPH1158865A (en) * 1997-08-11 1999-03-02 Sony Corp Ultrasonic fused shell body
JP2002192617A (en) * 2000-12-26 2002-07-10 Niles Parts Co Ltd Hermetically closed joining structure of resin structure
JP2002325328A (en) * 2001-04-25 2002-11-08 Yazaki Corp Shield processing structure and shielding treatment method of multi-conductor shielding wire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6318320U (en) * 1986-07-23 1988-02-06
JPH07322467A (en) * 1994-04-01 1995-12-08 Yazaki Corp Method of waterproofing covered cable and waterproof structure
JPH10189071A (en) * 1996-10-25 1998-07-21 Yazaki Corp Junction structure of covered wire
JPH1158865A (en) * 1997-08-11 1999-03-02 Sony Corp Ultrasonic fused shell body
JP2002192617A (en) * 2000-12-26 2002-07-10 Niles Parts Co Ltd Hermetically closed joining structure of resin structure
JP2002325328A (en) * 2001-04-25 2002-11-08 Yazaki Corp Shield processing structure and shielding treatment method of multi-conductor shielding wire

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