JP5391773B2 - Line water stop method to wire harness - Google Patents
Line water stop method to wire harness Download PDFInfo
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- JP5391773B2 JP5391773B2 JP2009077453A JP2009077453A JP5391773B2 JP 5391773 B2 JP5391773 B2 JP 5391773B2 JP 2009077453 A JP2009077453 A JP 2009077453A JP 2009077453 A JP2009077453 A JP 2009077453A JP 5391773 B2 JP5391773 B2 JP 5391773B2
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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
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Description
本発明は、ワイヤハーネスへの線間止水方法に関し、詳しくは、自動車のパネル貫通穴に装着するグロメットに挿通するワイヤハーネスの線間止水処理に関するものである。 The present invention relates to a method for water-stopping a wire harness, and more particularly, to a water-stopping treatment for a wire harness inserted into a grommet to be mounted in a panel through hole of an automobile.
例えば、被水領域である自動車のエンジンルームと車室とを仕切るパネルに穿設した貫通穴を通してワイヤハーネスを配線する場合、ゴムまたはエストラマーからなるグロメットにワイヤハーネスを挿通し、該グロメットを前記貫通穴に装着すると共に、該グロメット内を挿通する部位のワイヤハーネスに線間止水処理を施すことにより、車室側への浸水を防止している。
該線間止水は、グロメットを挿通するワイヤハーネスの電線群の間および各電線とグロメットの管部との間に隙間があると、該隙間を通してエンジンルーム側より車室内に浸水が生じるため、これら隙間をシールするため止水剤を充填して止水処理がなされている。
For example, when wiring a wire harness through a through-hole drilled in a panel that partitions an engine room and a vehicle compartment of a car, which is a flooded area, the wire harness is inserted into a grommet made of rubber or elastomer, and the grommet passes through the grommet. In addition to being attached to the hole, the wire harness at the part that is inserted through the grommet is subjected to inter-line water stop treatment, thereby preventing water from entering the passenger compartment.
When there is a gap between the wire harnesses of the wire harness that passes through the grommet and between the electric wire and the pipe part of the grommet, the line-to-line water stoppage causes water in the vehicle compartment from the engine room side through the gap. In order to seal these gaps, water-stopping treatment is performed by filling a water-stopping agent.
この種のワイヤハーネスの線間止水方法として、本出願人は特開2008−181815号公報(特許文献1)を提供している。
該止水方法は、まず、図10(A)に示すように、布線治具1にワイヤハーネスW/Hを構成する電線wを整列配置して挿通し、ついで、図10(B)に示すように、ノズル3を下方から上向きに移動させて、防水区間xの電線に止水剤4を塗布する。塗布後に、図10(C)に示すように、電線wの表面に粘着剤が塗布された発泡シート5を被せ、該発泡シート5を丸めてテープ6を巻き付けて固定する。
このように処理された止水部をグロメット内に挿通し、該止水部をグロメットの管部の内周面に密着させることにより、グロメットを挿通するワイヤハーネスの各電線間の隙間、および各電線とグロメット内周面との隙間をシールしている。
The present applicant has provided Unexamined-Japanese-Patent No. 2008-181815 (patent document 1) as the method of the water stop of this kind of wire harness between lines.
As shown in FIG. 10 (A), the water stop method first inserts and arranges the wires w constituting the wire harness W / H through the wiring jig 1 and then inserts the wire w in the wiring jig 1 into FIG. 10 (B). As shown, the nozzle 3 is moved upward from below to apply the water blocking agent 4 to the electric wire in the waterproof section x. After the application, as shown in FIG. 10C, the surface of the electric wire w is covered with the foamed sheet 5 coated with an adhesive, and the foamed sheet 5 is rolled up and the tape 6 is wound and fixed.
By inserting the water stop portion treated in this way into the grommet and bringing the water stop portion into close contact with the inner peripheral surface of the tube portion of the grommet, the gap between each wire of the wire harness that passes the grommet, and each The gap between the electric wire and the grommet inner peripheral surface is sealed.
しかしながら、この線間止水方法はワイヤハーネスの組み立てラインで連続して行える利点があるが、電線wを一列に整列させる作業や、シート5とテープ6を用いた集束作業が必要となる。また、発泡シート5を用いて止水剤4と電線wを丸める際に、電線に凹凸があるためシートが巻きにくい問題がある。 However, although this line-to-line waterproofing method has an advantage that it can be continuously performed on the assembly line of the wire harness, an operation of aligning the electric wires w in a line and a focusing operation using the sheet 5 and the tape 6 are required. Moreover, when the water-stopping agent 4 and the electric wire w are rounded using the foam sheet 5, there is a problem that the sheet is difficult to wind because the electric wire has irregularities.
本発明は前記問題に鑑みてなされたもので、線間止水工数を削減でき、かつ、止水性能を高めることができるワイヤハーネスの線間止水方法を提供することを課題としている。 This invention is made | formed in view of the said problem, and makes it the subject to provide the line water stop method of the wire harness which can reduce the number of line water stop man-hours, and can improve water stop performance.
前記課題を解決するために、本発明は、ワイヤハーネスを構成する電線群をテープ巻きして集束すると共に、止水箇所はテープ巻きせずに防水シートで上面を開口したU字状に被覆し、
加圧容器内に配置したU字状のセット治具に前記防水シートで被覆した前記止水箇所を挿通して支持し、
前記止水箇所の防水シートで被覆していない電線群の上面に止水剤を塗布し、
ついで、前記加圧容器内に圧縮空気を導入して加圧し、前記止水剤を電線群中に浸透させていき、
その後、前記U字状の防水シートの両端部先端を電線群の上面に折り返して被覆していることを特徴とするワイヤハーネスの線間止水方法を提供している。
In order to solve the above-mentioned problems, the present invention covers a group of electric wires constituting a wire harness by tape winding and concentrating, and a water stop portion is covered with a waterproof sheet and covered in a U shape with an upper surface opened without tape winding. ,
Insert and support the water stop point covered with the waterproof sheet in a U-shaped set jig placed in a pressurized container,
Applying a water stop agent to the upper surface of the wire group not covered with the waterproof sheet of the water stop point,
Subsequently, compressed air is introduced into the pressurized container and pressurized, and the water blocking agent is allowed to permeate into the wire group.
Then, the wire-to-line water stop method for the wire harness is provided, wherein the ends of both end portions of the U-shaped waterproof sheet are folded and covered on the upper surface of the electric wire group.
本発明の前記ワイヤハーネスの線間止水方法を用いれば、ワイヤハーネスを予め集束した状態で前記U字状のセット治具に挿通し、この集束された電線群中に加圧によって止水剤を浸透させるため、止水剤を塗布するために電線群を布線治具の長穴に挿通して整列させる工程を必要としないうえ、止水剤充填後に止水部を円形に丸める集束工程も必要とせず、工数を削減して作業性を高めることができる。
また、あらかじめ電線群をテープ巻きしてあるため、電線の凹凸が無くなり防水シートで止水部を巻き付ける工程の作業性が向上する。
According to the wire harness water-stopping method of the present invention, the wire harness is inserted in the U-shaped set jig in a state of being preliminarily converged, and a water-stopping agent is applied by pressurization into the converged wire group. In order to infiltrate the water-stopping agent, there is no need for a step of inserting and aligning the wire group through the elongated hole of the wiring jig in order to apply the water-stopping agent, and the converging step of rounding off the water-stopping portion after filling with the water-stopping agent However, man-hours can be reduced and workability can be improved.
Moreover, since the electric wire group is taped beforehand, the unevenness | corrugation of an electric wire is lose | eliminated and the workability | operativity of the process of winding a water stop part with a waterproof sheet improves.
さらに、ワイヤハーネスの止水箇所の外周に予め防水シートをU字状に巻き付け、該止水箇所を防水シートで受けた状態で前記セット治具に挿通して止水剤を浸透させるため、防水シートで止水剤を受け止めて該止水剤の垂れ落ちを防ぐことができると共に、電線間の隙間に加え、電線と防水シートとの隙間にも止水剤を浸透させることができる。 Furthermore, a waterproof sheet is wound around the outer periphery of the water stopping part of the wire harness in a U-shape in advance, and the water stopping part is inserted into the set jig in a state where the water stopping part is received by the waterproof sheet. The sheet can receive the water-stopping agent to prevent the water-stopping agent from dripping, and the water-stopping agent can be permeated into the gap between the electric wire and the waterproof sheet in addition to the gap between the electric wires.
さらにまた、止水剤を浸透させる前に電線群を収束して円形に成形しておくため、止水剤の浸透前後で電線群の隙間の大きさや形状が変化せず、隙間を確実に止水剤で充填させることができ、止水性能を高めることができる。また、整列させた電線群に止水剤を塗布する場合に比べて、電線群の間に止水剤を保持できるために、液垂れが発生しにくくなり、より低粘度の止水剤を使用でき電線群の小さな隙間へも止水剤を浸透させることが可能となる。 Furthermore, since the wire group is converged and formed into a circular shape before the water-stopper is infiltrated, the size and shape of the wire group gap do not change before and after the water-stopper penetrates, and the gap is securely stopped. It can be filled with a liquid agent, and the water stop performance can be enhanced. In addition, compared to the case where a waterproofing agent is applied to the aligned wire group, the waterproofing agent can be held between the wire groups, so that dripping is less likely to occur, and a lower viscosity waterproofing agent is used. It is possible to infiltrate the water-stopping agent into small gaps in the electric wire group.
前記防水シートで被覆する電線群の両側では、透明テープを用いて前記テープ巻きを行い、前記電線群中への前記止水剤の浸透状態を外観可能としていることが好ましい。これにより、止水剤がどこまで浸透したかを容易に目視確認できる。 It is preferable that the tape winding is performed using a transparent tape on both sides of the electric wire group covered with the waterproof sheet so that the appearance of the penetration of the water-stopper into the electric wire group can be achieved. Thereby, it is possible to easily visually check how far the waterstop agent has penetrated.
止水剤に熱硬化性、熱可塑性、UV硬化性、湿気硬化性の少なくともいずれか一つの特性を有する止水剤を用い、前記防水シートで被覆する止水箇所を挟む両側の前記テープ巻き部分を、前記加圧容器の周壁に形成した引出口から外方へ引き出し、該引出口から引き出した位置で、加熱、冷却、紫外線照射または加湿を行って、前記電線群中に浸透する止水剤を前記電線群の軸方向の所定位置で硬化させることができる。 The tape winding portion on both sides sandwiching the water stop portion covered with the waterproof sheet, using a water stop agent having at least one of thermosetting, thermoplastic, UV curable, and moisture curable properties A water-stop agent that is drawn outward from the outlet formed in the peripheral wall of the pressurized container and permeates into the wire group by heating, cooling, ultraviolet irradiation or humidification at the position drawn from the outlet. Can be cured at a predetermined position in the axial direction of the wire group.
このように、止水箇所の両側の前記テープ巻き部分から止水剤を硬化させることにより、止水箇所外に止水剤が所定の範囲内から流れ広がることを防止して、止水箇所の電線群内への止水剤の浸透力を高めることができるため、電線間および電線と防水シート間の全隙間により確実に止水剤を充填させることができる。 In this way, by curing the water-stopping agent from the tape winding part on both sides of the water-stop location, the water-stop agent is prevented from flowing out of the predetermined range outside the water-stop location, Since the penetration force of the water-stopping agent into the electric wire group can be increased, the water-stopping agent can be reliably filled with the entire gap between the electric wires and between the electric wires and the waterproof sheet.
また、本発明は、前記線間止水方法で止水処理されたワイヤハーネスを提供している。
前記止水処理されたワイヤハーネスはグロメット内に挿通している。
該グロメットは、前記止水処理部を密着して挿通させる小径筒部と、該小径筒部の一端に連続する拡径筒部を備え、該拡径筒部の大径側の外周に車体パネルに設けた貫通孔の周縁に係止する車体係止凹部を設けている。
前記グロメットの小径筒部に挿通するワイヤハーネスの電線間の隙間に止水剤を充填して線間止水していると共に、該止水処理部の外周面に巻き付けている前記防水シートとグロメットの内周面とが密着できる。
Moreover, this invention provides the wire harness water-stopped by the said line water-stop method.
The water harness that has been water-stopped is inserted into the grommet.
The grommet includes a small-diameter cylindrical portion that allows the water-stopping treatment portion to be inserted in close contact therewith, and a large-diameter cylindrical portion that is continuous with one end of the small-diameter cylindrical portion. A vehicle body locking recess for locking to the periphery of the through-hole provided in is provided.
The waterproof sheet and the grommet wound around the outer peripheral surface of the water stop treatment portion while filling the gap between the wires of the wire harness inserted through the small diameter cylindrical portion of the grommet with a water stop agent to stop the water between the lines. Can be in close contact with the inner peripheral surface.
さらに、本発明は、前記線間止水方法で用いる線間止水装置を提供している。
該線間止水装置の前記加圧容器はワイヤハーネス組立作業台上に搭載され、該ワイヤハーネス組立作業台上で布線された電線群をテープ巻きすると共に前記防水シートで被覆されたワイヤハーネスの前記止水箇所を前記加圧容器に挿入して前記止水剤を充填するものとしている。
Furthermore, this invention provides the line water stop apparatus used with the said line water stop method.
The pressure vessel of the line waterproofing device is mounted on a wire harness assembly work table, and a wire harness that is wound on the wire harness assembly work table and taped and covered with the waterproof sheet The water stop portion is inserted into the pressurized container and filled with the water stop agent.
このように、本発明の線間止水装置の加圧容器をワイヤハーネス組立作業台上に搭載するため、ワイヤハーネスの組立ライン上でワイヤハーネスの電線群の線間止水処理ができる。 Thus, since the pressurization container of the line water stop apparatus of this invention is mounted on a wire harness assembly worktable, the line water stop process of the electric wire group of a wire harness can be performed on the assembly line of a wire harness.
上述したように、本発明の線間止水方法では、ワイヤハーネスの止水箇所を除いてテープで集束し、テープ巻きしていない止水箇所をU字状のセット治具に挿通し、この集束された電線群中に加圧によって止水剤を浸透させている。よって、止水剤を塗布するために従来必要とした電線群の整列工程を必要としないうえ、止水剤充填後に整列させた止水部を丸める集束工程も必要とせず、工数を削減して作業性を高めることができる。 As described above, in the line waterproofing method of the present invention, the water harness is concentrated with a tape except for the water stopping part of the wire harness, and the water stopping part that is not wound with tape is inserted into a U-shaped setting jig. A water-stopping agent is infiltrated into the bundle of electric wires by pressurization. Therefore, it does not require the electric wire group alignment process that was required in the past to apply the water-stopping agent, and it does not require a converging process to round the water-stopped parts that are aligned after filling the water-stopping agent. Workability can be improved.
また、あらかじめ電線群をテープ巻きしているため、電線の凹凸が無くなり防水シートを巻き付ける工程の作業性が向上する。
さらに、電線群の止水箇所の外周に防水シートをU字状に巻き付け、該止水箇所を防水シートで受けた状態でセット治具に挿通するため、該防水シートによって止水剤を受けとめて垂れ落ちを防ぐことがきると共に、電線間の隙間に加え、電線と防水シートとの間の隙間にも止水剤を浸透させることができる。
Moreover, since the electric wire group is taped beforehand, the unevenness | corrugation of an electric wire is lose | eliminated and the workability | operativity of the process of winding a waterproof sheet improves.
Furthermore, a waterproof sheet is wound around the outer periphery of the water stop point of the electric wire group in a U shape, and the water stop point is received by the waterproof sheet and inserted into the set jig. In addition to preventing dripping, the water stop agent can be permeated into the gap between the electric wire and the waterproof sheet in addition to the gap between the electric wires.
以下、本発明の実施形態を図面を参照して説明する。
図1乃至図9に、本発明の第1実施形態を示す。
ワイヤハーネス10は、図8に示すように、自動車のエンジンルームXと車室Yとを仕切る車体パネル50に設けた貫通穴51に挿通して配索されるものである。該貫通穴51を挿通する部分には、ワイヤハーネス10にグロメット40を装着し、該グロメット40を挿通するワイヤハーネスに線間止水を施している。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 9 show a first embodiment of the present invention.
As shown in FIG. 8, the wire harness 10 is routed through a through hole 51 provided in a vehicle body panel 50 that partitions an engine room X and a vehicle compartment Y of an automobile. A grommet 40 is attached to the wire harness 10 at a portion through which the through hole 51 is inserted, and a line water stop is applied to the wire harness through which the grommet 40 is inserted.
前記グロメット40は、ワイヤハーネス10を密着させて挿通する小径筒部41の一端に拡径筒部42を連続させ、拡径筒部42の外周に車体パネル50の貫通穴51と嵌合する環状の車体係止凹部43を設けている。ワイヤハーネス10の小径筒部41内に挿通される部位を止水箇所Aとし、該止水箇所Aにワイヤハーネス10の電線群に止水剤を充填して線間止水処理している。 The grommet 40 has an annular tube portion 42 which is continuous with one end of a small diameter tube portion 41 through which the wire harness 10 is closely attached and inserted, and is fitted into the through hole 51 of the vehicle body panel 50 on the outer periphery of the expanded diameter tube portion 42. The vehicle body locking recess 43 is provided. The part inserted into the small-diameter cylindrical portion 41 of the wire harness 10 is a water stop point A, and the water stop point A is filled with a water stop agent in the wire group of the wire harness 10 to perform a line water stop process.
図1(A)および図4に示すように、ワイヤハーネス組立作業台21上に加圧容器22を備えた線間止水装置20を搭載し、線間止水処理はワイヤハーネス組立作業台21上で行っている。 As shown in FIG. 1A and FIG. 4, a line water stopping device 20 having a pressurized container 22 is mounted on a wire harness assembly work table 21, and the line water stop treatment is performed by the wire harness assembly work table 21. Is going on.
加圧容器22は、例えば、図4に示すような、上壁23、底壁24、左右側壁25および前後側壁26とで囲まれた四角ボックス形状よりなる。該加圧容器22は、図1(A)に示すように、対称形状の半割り体からなる下ケース22Aと上ケース22Bとからなり、下ケース22Aのキャビティ27Aと上ケース22Bのキャビティ27Bとで圧縮空気充填用キャビティ27を形成している。 The pressurization container 22 has, for example, a rectangular box shape surrounded by an upper wall 23, a bottom wall 24, left and right side walls 25, and front and rear side walls 26 as shown in FIG. As shown in FIG. 1 (A), the pressurized container 22 is composed of a lower case 22A and an upper case 22B made of symmetrical halves, and includes a cavity 27A of the lower case 22A and a cavity 27B of the upper case 22B. Thus, a compressed air filling cavity 27 is formed.
前記下ケース22Aの配線方向両端に位置する左右両側壁25Aには、円形に集束した電線群11を保持すると共に外部へと引き出す電線引出凹部28Aを上端から凹設している。
前記上ケース22Bにも、前記各電線引出凹部28Aとの対向位置に電線引出凹部28Bを下端から凹設している。
上記電線引出凹部28Aと28Bの内周には、それぞれ電線群11の外周面に密着する柔軟性を有するシール材32A、32Bを装着している。
これにより、下ケース22Aに上ケース22Bを被せてキャビティ27を閉じたときに、図4に示すように、上下の前記電線引出凹部28A、28Bによって丸穴からなる電線引出口28を形成している。また、ケースのいずれか、例えば上ケース22Bの上壁23には、圧縮空気導入口29を設けている。
On both left and right side walls 25A located at both ends of the lower case 22A in the wiring direction, a wire drawing recess 28A is formed from the upper end to hold the wire group 11 converged in a circular shape and to be pulled out to the outside.
The upper case 22B is also provided with a wire drawing recess 28B from the lower end at a position facing the wire drawing recess 28A.
Sealing materials 32A and 32B having flexibility to be in close contact with the outer peripheral surface of the electric wire group 11 are mounted on the inner circumferences of the wire drawing recesses 28A and 28B.
As a result, when the upper case 22B is put on the lower case 22A and the cavity 27 is closed, as shown in FIG. 4, the upper and lower wire lead-out recesses 28A and 28B form a wire outlet 28 made of a round hole. Yes. Further, a compressed air inlet 29 is provided in any case, for example, the upper wall 23 of the upper case 22B.
前記下ケース22A内には、図1(A)(B)に示すように、底壁24にセット治具30を配置している。セット治具30は、前記底壁24から立設する軸部31と、該軸部31の上端に設けたU字状の電線受け部34とからなる。該電線受け部34は、その底部34aの高さが前記電線引出凹部28Aと同一高さとなるように設定している。 A set jig 30 is disposed on the bottom wall 24 in the lower case 22A as shown in FIGS. The setting jig 30 includes a shaft portion 31 erected from the bottom wall 24 and a U-shaped wire receiving portion 34 provided at the upper end of the shaft portion 31. The wire receiving portion 34 is set such that the bottom portion 34a has the same height as the wire drawing recess 28A.
次に、前記線間止水装置20を用いた線間止水方法を説明する。
まず、前記ワイヤハーネス組立作業台21上でワイヤハーネス10を布線し、図2に示すように、ワイヤハーネス10を構成する電線群11の前記止水箇所Aを挟んだ両側に、粘着剤が塗布された透明テープ13を巻き付けて電線群11を円形に集束する。
該透明テープ13の巻き付け時に、透明テープ13を巻き付けずに電線群11を露出させた止水箇所Aの下半外周に、防水シート14をU字状に巻き付けて被覆すると共に、該止水箇所Aの上面側では防水シート14を巻き閉じないで電線群11を露出させておく。防水シート14の一端側には粘着剤を塗布して粘着部14aを形成している。
Next, a line water stopping method using the line water stopping device 20 will be described.
First, the wire harness 10 is laid out on the wire harness assembly work table 21, and as shown in FIG. 2, as shown in FIG. 2, an adhesive is placed on both sides of the water stop portion A of the wire group 11 constituting the wire harness 10. The coated transparent tape 13 is wound to converge the electric wire group 11 into a circle.
When the transparent tape 13 is wound, the waterproof sheet 14 is wrapped around the lower half outer periphery of the water stop portion A where the wire group 11 is exposed without winding the transparent tape 13 in a U shape, and the water stop portion is covered. On the upper surface side of A, the electric wire group 11 is exposed without winding and closing the waterproof sheet 14. An adhesive is applied to one end side of the waterproof sheet 14 to form an adhesive portion 14a.
次いで、図3に示すように、加圧容器22の下ケース22A内に配置された前記セット治具30の電線受け部34に、防水シート14でU字状に被覆された状態の止水箇所Aを挿通して防水シート14と共に保持させる。かつ、止水箇所Aの両側の透明テープ13の巻き付け箇所を、下ケース22Aの前記電線引出凹部28Aに嵌めて外方に引き出す。
この状態で、防水シート14で被覆されていない止水箇所Aの上面に止水剤15を塗布する。
Next, as shown in FIG. 3, the water stop portion in a state where the wire receiving portion 34 of the setting jig 30 disposed in the lower case 22 </ b> A of the pressurized container 22 is covered with a waterproof sheet 14 in a U shape. A is inserted and held together with the waterproof sheet 14. And the winding location of the transparent tape 13 of the both sides of the water stop location A is fitted in the said electric wire extraction recessed part 28A of 22 A of lower cases, and it draws outward.
In this state, the water-stopping agent 15 is applied to the upper surface of the water-stop portion A that is not covered with the waterproof sheet 14.
止水剤15には、加圧工程時に止水剤15の周囲のエアの圧力とケース外側に引き出された電線群の内部の圧力との圧力差によって止水剤15が電線群の内側方向及び長手方向に浸透し得る程度の流動性を有するものを用いる。 The water-stopping agent 15 has a water-stopping agent 15 in the inner direction of the electric wire group and a pressure difference between the pressure of the air around the water-stopping agent 15 and the pressure inside the electric wire group drawn to the outside of the case in the pressurizing step. Those having fluidity that can penetrate in the longitudinal direction are used.
また、前記止水剤15は、前記の浸透後に少なくとも止水剤15の形態が安定して維持される程度に硬化するものであることが好ましい。この硬化は湿気による自然硬化でもよいし、紫外線の照射や加熱・冷却によって促進される硬化であっても良い。ただし、硬化後も止水剤15にある程度の柔軟性が確保されることが好ましい。このことは、組付け時に加わる外力による止水剤15の割れや破損の発生を回避することを可能にする。 Moreover, it is preferable that the said water-stopping agent 15 hardens | cures to such an extent that the form of the water-stopping agent 15 is stably maintained at least after the said penetration | infiltration. This curing may be natural curing by moisture, or curing accelerated by irradiation with ultraviolet rays, heating or cooling. However, it is preferable that a certain degree of flexibility is ensured in the water-stopper 15 even after curing. This makes it possible to avoid the occurrence of cracking or breakage of the water-stopping agent 15 due to external force applied during assembly.
具体的に、止水剤15の材質としては、例えば、湿気硬化性のシリコーン樹脂やUV硬化性あるいは熱硬化性のシリコーン樹脂が好適である。前記シリコーン樹脂を用いれば、後述の加圧時に、図6に示すように左右両側の電線引出口28から引き出された位置の透明テープ13の巻き付け箇所に紫外線照射や加熱を行うことにより、所定の範囲に到達した止水剤から硬化させることができ、所定の範囲内で隙間無く充填させることができる。 Specifically, as the material of the water stop agent 15, for example, a moisture curable silicone resin and a UV curable or thermosetting silicone resin are suitable. When the silicone resin is used, during the pressurization described later, as shown in FIG. 6, by irradiating with ultraviolet rays or heating the wound portion of the transparent tape 13 at the position pulled out from the wire outlets 28 on both the left and right sides, It can be cured from the water-stopping agent that has reached the range, and can be filled without gaps within a predetermined range.
さらに、止水剤15にチクソ性を付与したものを用いれば、電線群中へ止水剤を加圧浸透させる際には、電線と止水剤との間に生じるせん断力により止水剤は低粘度となるため微少隙間への浸透が可能となる。且つ、電線群内に浸透し加圧を終了した際には、止水剤の粘度が高くなり浸透した隙間内に安定して保持できるため、止水性能の低下や液垂れを防止することができる。 Furthermore, if the water stop agent 15 having a thixotropic property is used, when the water stop agent is pressed and penetrated into the electric wire group, the water stop agent is caused by the shearing force generated between the electric wire and the water stop agent. Since it has a low viscosity, it can penetrate into minute gaps. And when it penetrates into the electric wire group and pressurization is finished, the viscosity of the water-stopping agent becomes high and can be stably held in the penetrated gap, thus preventing deterioration of water-stopping performance and dripping. it can.
次いで、図4に示すように、加圧容器22の下ケース22Aの上面に上ケース22Bを下向きに被せてキャビティ27を閉じる。これにより、加圧容器22内に止水箇所Aが収容されると共に、該加圧容器22の左右両側の電線引出口28から電線群11が引き出され、該電線群11の前記透明テープ13の巻き付け部分の外周に前記電線引出口28が密着する。 Next, as shown in FIG. 4, the upper case 22 </ b> B is placed downward on the upper surface of the lower case 22 </ b> A of the pressurized container 22 to close the cavity 27. As a result, the water stop point A is accommodated in the pressurized container 22, and the wire group 11 is drawn out from the wire outlets 28 on the left and right sides of the pressurized container 22, and the transparent tape 13 of the wire group 11 is The wire outlet port 28 is in close contact with the outer periphery of the wound portion.
次に、図5(A)(B)に示すように、加圧容器22の前記圧縮空気導入口29から圧縮空気をキャビティ27内に導入して加圧容器22内を加圧する。
このように、加圧により止水剤15を電線群11中の各電線12間の隙間および電線群11と前記防水シート14との間の隙間に浸透させ、かつ、電線引出口28より外側にまで浸透してきた止水剤15を透明テープ13内で硬化させる。
Next, as shown in FIGS. 5A and 5B, compressed air is introduced into the cavity 27 from the compressed air introduction port 29 of the pressurized container 22 to pressurize the inside of the pressurized container 22.
In this way, the water-stopping agent 15 is penetrated into the gaps between the electric wires 12 in the electric wire group 11 and the gaps between the electric wire group 11 and the waterproof sheet 14 by pressurization, and outside the electric wire outlet 28. The water-stopping agent 15 that has penetrated to the inside is cured in the transparent tape 13.
最後に、図7に示すように、加圧容器22の上ケース22Bを外し、U字状の前記防水シート14の両端部先端を止水箇所Aの上面で折り返し重ねて巻き閉じる。これにより、止水剤15を充填した止水箇所Aの全外周を防水シート14で被覆した止水処理部Bを形成している。 Finally, as shown in FIG. 7, the upper case 22 </ b> B of the pressurized container 22 is removed, and the ends of both ends of the U-shaped waterproof sheet 14 are folded back on the upper surface of the water stop A and wound up. Thereby, the water stop processing part B which coat | covered the whole outer periphery of the water stop location A filled with the water stop agent 15 with the waterproof sheet 14 is formed.
前記線間止水方法による止水処理部を形成したワイヤハーネス10を、グロメット40内に挿通している。図8に示すように、グロメット40の小径筒部41内にワイヤハーネス10の止水処理部Bを配置している。
前記したワイヤハーネス10は、自動車の組立ラインにおいて、該グロメット40の車体係止凹部43に車体パネル50の貫通穴51の周縁部を嵌合して、グロメット40を貫通穴51に取り付けている。
The wire harness 10 in which the water stop processing part by the line water stop method is formed is inserted into the grommet 40. As shown in FIG. 8, the water stop treatment part B of the wire harness 10 is arranged in the small diameter cylindrical part 41 of the grommet 40.
The above-described wire harness 10 is attached to the through hole 51 by fitting the peripheral edge portion of the through hole 51 of the vehicle body panel 50 to the vehicle body engaging recess 43 of the grommet 40 in the assembly line of the automobile.
前記した本発明の線間止水方法によれば、電線群11の止水箇所Aを予め集束して円形とした状態で、止水剤を塗布し、加圧によって止水剤15を電線群中に浸透させている。よって、特許文献1で必要とされた電線群の整列工程、止水剤塗布後の防水シートを巻き付けて丸める集束工程が不要となり、工数を削減でき、作業性を高めることができる。 According to the above-described line water stopping method of the present invention, the water stopping agent is applied in a state where the water stopping points A of the electric wire group 11 are preliminarily converged into a circular shape, and the water stopping agent 15 is applied to the electric wire group by pressurization. It penetrates inside. Therefore, the electric wire group alignment step and the converging step of winding and rounding the waterproof sheet after applying the water-stopping agent, which are required in Patent Document 1, are unnecessary, and the number of man-hours can be reduced and workability can be improved.
また、防水シート14は止水剤15の塗布前に予め止水箇所Aの外周に配置しているうえ、電線群11は予め円形に集束されているため、止水剤15の塗布後は、前述の通り、防水シート14の両側先端部を重ねて巻き閉じるだけでよく、従来のように防水シート14で止水箇所を円形に丸める必要がない。また、予め電線群をテープ巻きしてあるため電線の凹凸が無くなり、防水シートを巻き付ける工程の作業性が向上する。 In addition, the waterproof sheet 14 is arranged in advance on the outer periphery of the water stop spot A before application of the water stop agent 15, and the electric wire group 11 is preliminarily converged in a circular shape. As described above, it is only necessary to overlap and close the tip portions on both sides of the waterproof sheet 14, and there is no need to round off the water-stopped portion with the waterproof sheet 14 as in the prior art. Moreover, since the electric wire group is tape-wrapped in advance, the unevenness of the electric wires is eliminated, and the workability of the process of winding the waterproof sheet is improved.
さらに、止水箇所Aの両側に透明テープ13を巻き付けることにより、止水剤15がどこまで浸透したかを容易に目視で確認することができるため、止水剤15の浸透不足箇所の発生を防いで品質安定性を高めることができる。 Furthermore, since the transparent tape 13 is wound around both sides of the water-stopping portion A, it is possible to easily visually check how far the water-stopping agent 15 has penetrated. Can improve quality stability.
また、電線群11を円形に集束した状態で止水剤を塗布および加圧浸透させているため、止水剤の浸透前後で電線群の隙間の大きさや形状が変化しないため、隙間を確実に止水剤で充填させて止水性能を高めることができる。また、整列させた電線群に止水剤を塗布する場合に比べて、電線群の間に止水剤を保持できるために、液垂れが発生しにくくなり、より低粘度の止水剤を使用でき電線群の微少隙間へも止水剤を充填させることが可能となる。
さらに、防水シート14を電線群11にU字状に巻き付けて止水剤15を塗布することにより、防水シート14で止水剤15を受けることができるため、低粘度の止水剤15であっても垂れ落ちを防止できる。
これらにより、止水箇所Aの電線12間および電線12と防水シート14との間の僅かな隙間も含めて全ての隙間に止水剤15を浸透させることができ、止水処理部Bの止水性能を高めることができる。
In addition, since the waterproofing agent is applied and pressurized and penetrated in a state where the electric wire group 11 is converged in a circular shape, the size and shape of the gap of the electric wire group do not change before and after the penetration of the waterproofing agent. It can be filled with a water-stop agent to improve water-stop performance. In addition, compared to the case where a waterproofing agent is applied to the aligned wire group, the waterproofing agent can be held between the wire groups, so that dripping is less likely to occur, and a lower viscosity waterproofing agent is used. It is possible to fill the water gap with the minute gaps of the electric wire group.
Furthermore, since the waterproof sheet 14 can be received by the waterproof sheet 14 by winding the waterproof sheet 14 around the electric wire group 11 in a U shape and applying the waterproof agent 15, the low-viscosity waterproof agent 15 is used. However, dripping can be prevented.
Accordingly, the water-stopping agent 15 can be infiltrated into all the gaps including the slight gaps between the electric wires 12 and between the electric wires 12 and the waterproof sheet 14 at the water-stop portion A. Water performance can be increased.
10 ワイヤハーネス
11 電線群
13 透明テープ
14 防水シート
15 止水剤
20 線間止水装置
22 加圧容器
30 セット治具
40 グロメット
41 小径筒部
50 車体パネル
51 貫通穴
A 止水箇所
B 止水処理部
DESCRIPTION OF SYMBOLS 10 Wire harness 11 Electric wire group 13 Transparent tape 14 Waterproof sheet 15 Water stop agent 20 Line water stop device 22 Pressurization container 30 Set jig 40 Grommet 41 Small diameter cylinder part 50 Body panel 51 Through-hole A Water stop part B Water stop process Part
Claims (7)
加圧容器内に配置したU字状のセット治具に前記防水シートで被覆した前記止水箇所を挿通して支持し、
前記止水箇所の防水シートで被覆していない電線群の上面に止水剤を塗布し、
ついで、前記加圧容器内に圧縮空気を導入して加圧し、前記止水剤を電線群中に浸透させていき、
その後、前記U字状の防水シートの両端部先端を電線群の上面に折り返して被覆していることを特徴とするワイヤハーネスの線間止水方法。 While winding and concentrating the wire group constituting the wire harness, the water stop point is covered with a waterproof sheet without covering with a waterproof sheet in a U-shape,
Insert and support the water stop point covered with the waterproof sheet in a U-shaped set jig placed in a pressurized container,
Applying a water stop agent to the upper surface of the wire group not covered with the waterproof sheet of the water stop point,
Subsequently, compressed air is introduced into the pressurized container and pressurized, and the water blocking agent is allowed to permeate into the wire group.
Then, the water-stop method for wire harnesses of the wire harness, wherein the ends of both end portions of the U-shaped waterproof sheet are covered with the upper surface of the electric wire group.
前記防水シートで被覆する止水箇所を挟む両側の前記テープ巻き部分を、前記加圧容器の周壁に形成した引出口から外方へ引き出し、該引出口から引き出した位置で、加熱、冷却または紫外線照射を行い、
前記電線群中に浸透する止水剤を前記電線群の軸方向の所定位置で硬化させる請求項1または請求項2に記載のワイヤハーネスの線間止水方法。 As the water-stopping agent, a water-stopping agent having at least one of thermosetting, thermoplastic, UV curable, and moisture curable properties is used,
The tape winding portions on both sides sandwiching the water stop portion covered with the waterproof sheet are drawn outward from the outlet formed in the peripheral wall of the pressurized container, and heated, cooled, or ultraviolet-rayed at the position drawn from the outlet. Irradiation,
The method for water-stopping a wire harness according to claim 1 or 2, wherein a water-stopping agent that penetrates into the wire group is cured at a predetermined position in the axial direction of the wire group.
前記加圧容器はワイヤハーネス組立作業台上に搭載され、該ワイヤハーネス組立作業台上で布線された電線群をテープ巻きすると共に前記防水シートで被覆されたワイヤハーネスの前記止水箇所を前記加圧容器に挿入して前記止水剤を充填しているワイヤハーネスの線間止水装置。 A line water stopping device used in the line water stopping method according to any one of claims 1 to 4,
The pressurized container is mounted on a wire harness assembly workbench, tapes a group of wires wired on the wire harness assembly workbench, and the water stop location of the wire harness covered with the waterproof sheet is An inter-wire water-stop device for a wire harness that is inserted into a pressurized container and filled with the water-stop agent.
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JP6443248B2 (en) * | 2015-03-27 | 2018-12-26 | 住友電装株式会社 | Water stop device for wire harness and water stop structure provided with the water stop device |
JP6648537B2 (en) * | 2016-01-26 | 2020-02-14 | 株式会社オートネットワーク技術研究所 | Waterproof electric wire and method of manufacturing the same |
US11908598B2 (en) * | 2019-01-30 | 2024-02-20 | Autonetworks Technologies, Ltd. | Insulated electric wire and harness with water-stopping agent and wire harness |
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DE112019006772T5 (en) * | 2019-01-30 | 2021-10-14 | Autonetworks Technologies, Ltd. | INSULATED ELECTRIC WIRE, WIRING AND MANUFACTURING METHOD OF AN INSULATED ELECTRIC WIRE |
WO2020158445A1 (en) | 2019-01-30 | 2020-08-06 | 株式会社オートネットワーク技術研究所 | Insulated electrical wire and wire harness |
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