JP2005022425A

JP2005022425A - Wiring structure of automobile

Info

Publication number: JP2005022425A
Application number: JP2003186523A
Authority: JP
Inventors: Tatsuya Ishimaru; 竜也石丸
Original assignee: Toyota Auto Body Co Ltd
Current assignee: Toyota Auto Body Co Ltd
Priority date: 2003-06-30
Filing date: 2003-06-30
Publication date: 2005-01-27

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiring structure of an automobile whereby a wire harness wired around on the back surface of a ceiling plate of the automobile is located accurately and fixed, drawn out by the specified length into the cabin, and connected with electric components in the cabin. <P>SOLUTION: By this wiring structure, the wire harness 4 is threaded into a notch 22 formed at the edge 21 of the ceiling plate 2, drawn out into the cabin, and connected with the electric components 6 in the cabin, wherein a protector 7 composed of a body 71 covering the wire harness 4 and a pair of ribs 72a and 72b overhung in a flange shape in such a way as confronting closely each other from the periphery of the body 71 is installed in the harness threading part into the notch 22, and the body 71 is fitted in the notch 22 while the side edges of the notch 22 are pinched by the ribs 72a and 72b, and the wire harness 4 is located in the notch 22 and fixed through the protector 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は自動車における配線構造、特にルーフパネルの内面を覆う天井板の背面に配索したワイヤハーネスを車室内に引き出すようになした配線構造に関するものである。
【０００２】
【従来の技術】
天井板の背面に配索したワイヤハーネスを車室内に引き出して車室のランプ類やセンサー等の電装品に接続する場合、天井板の端縁に切欠きを形成し、この切欠きにワイヤハーネスを挿通させて車室内に引き出す構造がとられている。
【０００３】
図２はこの種の配線構造の代表例を示すもので、外板１ａおよび内板１ｂからなるルーフパネル１の内面に沿ってこれを覆う天井板２の起立前端縁２１に切欠き２２を形成し、天井板２の背面に配索したワイヤハーネス４を切欠き２２に挿通させて車室内に引き出し、先端に取付けたコネクタ４０を、フロントガラス３の上部内面に設置されてフロントガラス３にかかる降雨等を検知してワイパーの作動を制御するレインセンサ６に接続せしめている。ワイヤハーネス４の固定手段としては一般に接着テープ５が用いられ、接着テープ５によりワイヤハーネス４を天井板２の背面に貼着している。
【０００４】
ところが接着テープ５による貼着は手作業で行われているから、ワイヤハーネス４の配索位置が必ずしも正確でなく、天井板２の切欠き２２からコネクタ４０を設けた先端に至るワイヤハーネス４の引き出し長さにバラツキが生じる。短すぎるとコネクタ４０をレインセンサ６とに接続できない不都合が起り、無理に引っ張るとワイヤハーネス４が破損するおそれがある。逆に長すぎるとワイヤハーネス４がふくれ状に湾曲し、ルーフパネル１の外板１ａと内板１ｂの接合フランジ１０のエッジに接触して損傷するおそれが生じる。ワイヤハーネス４の切欠き挿通部を上から接着テープで起立端縁２１に貼着したとしても接着が不完全ではがれ易い。
【０００５】
下記特許文献１には、天井板の起立端縁に形成した切欠きに挿通させてワイヤハーネスを車室内に引き出す配線構造において、ワイヤハーネスを所定部位で切欠きに位置決めする手段として、ワイヤハーネスにスポンジを巻回し、ワイヤハーネスを切欠きに挿通させるときにスポンジの端面を天井板の起立端縁の内側面に当接させて位置決めする配線構造が記載されている。
【０００６】
しかしながらワイヤハーネスに巻回したスポンジは柔らかく、変形しやすいから不安定であり、強い力でワイヤハーネスを引っ張ったときにスポンジおよびワイヤハーネスが切欠きから抜けてしまうおそれがある。
【０００７】
【特許文献１】
特開２０００−１２７８６７号公報（第２頁，図４，図５）
【０００８】
【発明が解決しようとする課題】
そこで本発明は、自動車の天井板に沿うワイヤハーネスを天井板の端縁に形成した切欠きに挿通させて車室内に引き出して車室内の電装品に接続するときに、ワイヤハーネスを正確に所定の部位で、かつ作業性よく上記切欠きに位置決め固定することが出来る配線構造を提供することを課題としてなされたものである。
【０００９】
【課題を解決するための手段】
本発明は、ルーフパネルの内面を覆う天井板の端縁に切欠きを形成し、上記天井板の背面に沿って配索したワイヤハーネスを上記切欠きに挿通させて車室内に引き出し車室内の電装品に接続させる自動車の配線構造において、ワイヤハーネスには上記切欠きへの挿通部位に、ワイヤハーネスを被覆する本体と、該本体の外周から鍔状に張り出して互いに近接対向する１対のリブからなるプロテクタを取付け、上記本体を上記切欠きに嵌合せしめるとともに、上記１対のリブの間に上記切欠きの両側の天井板の端縁を嵌入せしめ、上記プロテクタを介してワイヤハーネスを上記切欠きに位置決め固定することを特徴とする（請求項１）。プロテクタの本体を上記切欠きに嵌合させると同時に上記リブ間に天井板の端縁が嵌入した状態となり、ワイヤハーネスはプロテクタを介して位置決め固定される。
【００１０】
上記１対のリブの対向面に、上記天井板の端縁を両面から挟む複数の突起を形成することにより、リブと上記端縁への結合を強化することができる（請求項２）。
【００１１】
上記１対のリブを上記プロテクタの長さ方向の一端に形成し、上記一端から所定長さで車室内に延出するワイヤハーネスの先端に設けたコネクタを上記電装品に接続せしめる（請求項３）。固定状態におけるプロテクタの一端と電装品との間の距離はほぼ一定であるからプロテクタのワイヤハーネスへの取付け位置は上記距離により予め決定され得る。
【００１２】
【発明の実施の形態】
本発明の実施形態を図１により説明する。自動車のルーフパネル１は外板１ａと、外板１ａの外周内面に沿って設けられて外板１ａとで閉断面を形成する内板１ｂとで構成されている。外板１ａと内板１ｂの前縁を接合する接合フランジ１０には、フロントガラス３の上縁部が接着剤３０により接着されている。フロントガラス３の上端縁と上記外板１ａの前端段部との間は、ウエザストリップ３１によりシールされている。
【００１３】
フロントガラス３の上端部内面には車幅方向中央位置に、ケースに収納されたレインセンサ６が設置してある。フロントガラス３の上端部は着色してある。ただしレインセンサ６取付部は、フロントガラス３にかかる雨水等を検知する必要から非着色部６１としてある。
【００１４】
車室の天井部には、ルーフパネル１と対向し、これを覆うように天井板２が設置してある。天井板２は表皮、パッド材および基材を一体成形してなる成形天井で、前端はほぼく字形ないしはＬ字形に湾曲して起立する起立端縁２１としてある。起立端縁２１はルーフパネル１の上記接合フランジ１０の前方を遮ってフロントガラス３の内面近くまで延びる高さとしてある。そして起立端縁２１には車幅方向中央に上端が開口するほぼコ字形の切欠き２２が形成してある。
【００１５】
天井板２の背面（上面）にはワイヤハーネス４が配索してある。ワイヤハーネス４は天井板２の前端に沿って幅方向中央に延び、Ｌ字形に湾曲して上記切欠き２２を通りフロントガラス３に沿って車室内に引き出してあり、先端に取付けたコネクタ４０をレインセンサ６に接続せしめるようにしてある。
【００１６】
ワイヤハーネス４には、切欠き２２に挿通される部位からＬ字形湾曲部にかけてプロテクタ７が取付けてある。プロテクタ７は硬質の合成樹脂、例えばポリプロピレンの一体成形体で、断面ほぼコ字形で長さ方向にＬ字形に湾曲し、ワイヤハーネス４を収納してこれを被覆する本体７１と、本体７１の長手方向の一端の外周に形成した１対のリブ７２ａ，７２ｂとからなる。本体７１の幅寸法は天井板２の切欠き２２に嵌合できる寸法としてある。
【００１７】
プロテクタ７の１対のリブ７２ａ，７２ｂは本体７１の一端の外周から均一な高さで鍔状に張り出しており、リブ７２ａはプロテクタ７の一端の端面を形成している。リブ７２ａ，７２ｂは互いに平行で、対向面間の間隔は、天井板２の起立端縁２１の板厚とほぼ同じとしてある。リブ７２ａおよび７２ｂの対向面には、対向位置に、先端が丸味のある小さい複数の突起７３が形成してある。相対向する突起７３の先端間の間隔は、天井板２の起立端縁２１の板圧よりも僅かに小さくしてある。リブ７２ａ，７２ｂを形成したプロテクタ７の一端には、断面ほぼコ字形で下方に開口する本体７１の上壁を延長するように延出する延出片７４が形成してある。
【００１８】
プロテクタ７の本体７１は、開口を下側にし、その中にワイヤハーネス４をＬ字形に湾曲させて挿通させる。長手方向両端の延出片７４で接着テープ５を巻回してプロテクタ７をワイヤハーネス４に固着する。プロテクタ７の取付け位置は、プロテクタ７の一端から引き出されて先端のコネクタ４０に至るワイヤハーネス４の長さが予め決められた長さとなる位置としてある。
【００１９】
このようにしてワイヤハーネス４に取付けられたプロテクタ７は、リブ７２ａ．７２ｂを形成した一端を天井板２の起立端縁２１の切欠き２２に上から押し込むと、本体７１が切欠き２２に嵌入すると同時にリブ７２ａ，７２ｂ間に切欠き２２の両側の起立端縁２１が下から嵌入し、プロテクタ７はワンタッチで起立端縁２１に組付けられる。このとき起立端縁２１はリブ７２ａ，７２ｂの突起７３に圧接しつつ嵌入し、プロテクタ７が切欠き２２に組付けられた状態で相対向するリブ７２ａ，７２ｂの突起７３先端は起立端縁２１の両面にくい込んでこれを挟み付け、プロテクタ７の抜けが防止される。
【００２０】
ワイヤハーネス４は天井板２に沿う部分で天井板２に所定の間隔で接着テープにより貼着され、天井板２に配索される。そしてワイヤハーネス４が配索された天井板２は車室上部に設置される。
【００２１】
プロテクタ７の一端は天井板２の切欠き２２に対し常に一定の位置関係で固定されるから、固定されたプロテクタ７の一端とフロントガラス３に設けたレインセンサ６との間隔はばらつきなく一定である。従って、コネクタ４０を取付けたワイヤハーネス４０先端からの長さが上記間隔とほぼ同一となる位置に一端を合致させてプロテクタ７をワイヤハーネス４に予め取付けておくことで、ワイヤハーネス４の車室内に引き出された部分にたるみが生じることなく、また引っ張り力が加わることなく、コネクタ４０を確実にレインセンサ６に接続することができる。
【００２２】
【発明の効果】
本発明によれば天井板に配索されるワイヤハーネスは、そのまわりに取付けたプロテクタにより天井板の端縁の切欠きに作業性よくかつ確実に位置決め固定することができる。またプロテクタは、ワイヤハーネスに一定の位置で取付けることにより、車室内に引き出されたワイヤハーネスをたるみなく、また引っ張り力が作用することなく車室の電装品に確実に接続させることができる。さらに、ワイヤハーネスは、プロテクタによって覆われることにより、ルーフパネルの接合フランジに接触して損傷することもない。本発明は天井板から車室内に引きだされたワイヤハーネスをレインセンサに接続する場合に限らず、車室の他の電装品に接続する配線構造に広く適用され得る。
【図面の簡単な説明】
【図１】（Ａ）は本発明により自動車の天井板に取付けられたワイヤハーネスの取付状態断面図であり、（Ｂ）はワイヤハーネスが天井板に取付けられる直前の状態を示す斜視図である。
【図２】（Ａ）はワイヤハーネスの従来の取付構造の図１（Ａ）対応図であり、（Ｂ）は図１（Ｂ）対応図である。
【符号の説明】
１ルーフパネル
２天井板
２１起立端縁
２２切欠き
３フロントガラス
４ワイヤハーネス
４０コネクタ
５接着テープ
６電装品（レインセンサ）
７プロテクタ
７１本体
７２ａ，７２ｂリブ
７３突起[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiring structure in an automobile, and more particularly to a wiring structure in which a wire harness routed on the back surface of a ceiling plate covering the inner surface of a roof panel is drawn out into a vehicle interior.
[0002]
[Prior art]
When the wire harness routed on the back of the ceiling plate is pulled out into the passenger compartment and connected to electrical components such as lamps and sensors in the passenger compartment, a notch is formed in the edge of the ceiling plate, and the wire harness is formed in the notch. The structure is taken out and inserted into the passenger compartment.
[0003]
FIG. 2 shows a typical example of this type of wiring structure, and a notch 22 is formed in the standing front edge 21 of the ceiling plate 2 that covers the inner surface of the roof panel 1 composed of the outer plate 1a and the inner plate 1b. Then, the wire harness 4 routed on the back surface of the ceiling plate 2 is inserted into the notch 22 and pulled out into the vehicle interior, and the connector 40 attached to the tip is installed on the upper inner surface of the windshield 3 and covers the windshield 3. It is connected to a rain sensor 6 that detects rain or the like and controls the operation of the wiper. As a fixing means for the wire harness 4, an adhesive tape 5 is generally used, and the wire harness 4 is adhered to the back surface of the ceiling board 2 with the adhesive tape 5.
[0004]
However, since the attachment with the adhesive tape 5 is performed manually, the wiring position of the wire harness 4 is not always accurate, and the wire harness 4 extending from the notch 22 of the ceiling plate 2 to the tip of the connector 40 is provided. Variations in the drawer length. If it is too short, there is a problem that the connector 40 cannot be connected to the rain sensor 6, and there is a possibility that the wire harness 4 may be damaged if it is forcibly pulled. On the other hand, if the wire harness 4 is too long, the wire harness 4 is bent in a blistering shape and may come into contact with the edges of the joining flange 10 of the outer plate 1a and the inner plate 1b of the roof panel 1 to be damaged. Even if the notch insertion portion of the wire harness 4 is attached to the standing edge 21 from above with an adhesive tape, the adhesion is likely to be incomplete.
[0005]
In Patent Document 1 below, in a wiring structure in which a wire harness is drawn into a vehicle interior by being inserted into a notch formed on an upstanding edge of a ceiling plate, the wire harness is used as a means for positioning the wire harness in a notch at a predetermined site. A wiring structure is described in which a sponge is wound and the end surface of the sponge is brought into contact with the inner surface of the standing edge of the ceiling plate when the wire harness is inserted through the notch.
[0006]
However, the sponge wound around the wire harness is soft and easily deformed, so it is unstable. When the wire harness is pulled with a strong force, the sponge and the wire harness may come out of the notch.
[0007]
[Patent Document 1]
Japanese Unexamined Patent Publication No. 2000-127867 (second page, FIGS. 4 and 5)
[0008]
[Problems to be solved by the invention]
Therefore, the present invention accurately inserts a wire harness along a ceiling plate of an automobile into a notch formed at an edge of the ceiling plate, pulls it out into the vehicle interior, and connects it to electrical components in the vehicle interior. It is an object of the present invention to provide a wiring structure that can be positioned and fixed to the notch with good workability.
[0009]
[Means for Solving the Problems]
In the present invention, a notch is formed in the edge of the ceiling plate covering the inner surface of the roof panel, and a wire harness routed along the back surface of the ceiling plate is inserted into the notch and pulled out into the vehicle interior. In a wiring structure of an automobile to be connected to an electrical component, a wire harness has a main body covering the wire harness at a portion where the cutout is inserted, and a pair of ribs protruding in a hook shape from the outer periphery of the main body and facing each other. The protector is attached, the main body is fitted into the notch, the edges of the ceiling plate on both sides of the notch are fitted between the pair of ribs, and the wire harness is inserted through the protector. The positioning is fixed to the notch (claim 1). At the same time as the main body of the protector is fitted into the notch, the edge of the ceiling plate is fitted between the ribs, and the wire harness is positioned and fixed via the protector.
[0010]
By forming a plurality of protrusions sandwiching the edge of the ceiling plate from both sides on the opposing surfaces of the pair of ribs, the coupling between the rib and the edge can be strengthened (Claim 2).
[0011]
The pair of ribs are formed at one end in the longitudinal direction of the protector, and a connector provided at the tip of a wire harness extending from the one end to the vehicle interior by a predetermined length is connected to the electrical component. ). Since the distance between the one end of the protector and the electrical component in the fixed state is substantially constant, the attachment position of the protector to the wire harness can be determined in advance by the distance.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIG. The roof panel 1 of an automobile is composed of an outer plate 1a and an inner plate 1b which is provided along the outer peripheral inner surface of the outer plate 1a and forms a closed section with the outer plate 1a. An upper edge portion of the windshield 3 is bonded by an adhesive 30 to a joining flange 10 that joins the front edges of the outer plate 1a and the inner plate 1b. A weather strip 31 seals between the upper edge of the windshield 3 and the front end step portion of the outer plate 1a.
[0013]
A rain sensor 6 housed in a case is installed on the inner surface of the upper end of the windshield 3 at the center in the vehicle width direction. The upper end of the windshield 3 is colored. However, the rain sensor 6 mounting portion is a non-colored portion 61 because it is necessary to detect rainwater or the like on the windshield 3.
[0014]
A ceiling plate 2 is installed on the ceiling of the passenger compartment so as to face and cover the roof panel 1. The ceiling plate 2 is a molded ceiling formed by integrally molding a skin, a pad material, and a base material, and the front end is a standing edge 21 that curves and rises in a substantially square shape or L shape. The standing edge 21 has a height that blocks the front of the joint flange 10 of the roof panel 1 and extends to the vicinity of the inner surface of the windshield 3. The standing edge 21 is formed with a substantially U-shaped notch 22 having an upper end opened at the center in the vehicle width direction.
[0015]
A wire harness 4 is routed on the back surface (upper surface) of the ceiling board 2. The wire harness 4 extends in the center in the width direction along the front end of the ceiling plate 2, curves in an L shape, passes through the notch 22, is drawn out into the vehicle compartment along the windshield 3, and a connector 40 attached to the tip is attached. The rain sensor 6 is connected.
[0016]
A protector 7 is attached to the wire harness 4 from a portion inserted through the notch 22 to an L-shaped curved portion. The protector 7 is an integral molded body of a hard synthetic resin, for example, polypropylene, and is curved in an L shape in the length direction with a substantially U-shaped cross section. The body 71 accommodates and covers the wire harness 4; It consists of a pair of ribs 72a and 72b formed on the outer periphery of one end in the direction. The width dimension of the main body 71 is a dimension that can be fitted into the notch 22 of the ceiling board 2.
[0017]
The pair of ribs 72 a and 72 b of the protector 7 protrudes from the outer periphery of one end of the main body 71 in a bowl shape at a uniform height, and the rib 72 a forms one end face of the protector 7. The ribs 72a and 72b are parallel to each other, and the distance between the opposing surfaces is substantially the same as the plate thickness of the standing edge 21 of the ceiling plate 2. On the opposing surfaces of the ribs 72a and 72b, a plurality of small protrusions 73 having rounded tips are formed at the opposing positions. The distance between the tips of the protrusions 73 facing each other is slightly smaller than the plate pressure of the standing edge 21 of the ceiling plate 2. At one end of the protector 7 on which the ribs 72a and 72b are formed, an extending piece 74 is formed which extends so as to extend the upper wall of the main body 71 having a substantially U-shaped cross section and opening downward.
[0018]
The main body 71 of the protector 7 has an opening on the lower side, and the wire harness 4 is bent into an L shape and inserted therethrough. The adhesive tape 5 is wound around the extending pieces 74 at both ends in the longitudinal direction to fix the protector 7 to the wire harness 4. The attachment position of the protector 7 is a position where the length of the wire harness 4 drawn from one end of the protector 7 to the connector 40 at the tip becomes a predetermined length.
[0019]
The protector 7 attached to the wire harness 4 in this way has the ribs 72a. When one end that forms 72b is pushed into the notch 22 of the standing edge 21 of the ceiling plate 2 from above, the main body 71 is fitted into the notch 22, and at the same time, the rising edges 21 on both sides of the notch 22 between the ribs 72a and 72b. Is inserted from below, and the protector 7 is assembled to the standing edge 21 with one touch. At this time, the standing edge 21 is fitted into the protrusions 73 of the ribs 72 a and 72 b while being pressed against each other, and the tips of the protrusions 73 of the ribs 72 a and 72 b facing each other with the protector 7 assembled to the notch 22 are raised edges 21. This prevents the protector 7 from coming off.
[0020]
The wire harness 4 is attached to the ceiling plate 2 at a predetermined interval at a portion along the ceiling plate 2 with an adhesive tape, and is routed to the ceiling plate 2. And the ceiling board 2 in which the wire harness 4 was wired is installed in the vehicle compartment upper part.
[0021]
Since one end of the protector 7 is always fixed to the notch 22 of the ceiling plate 2 in a fixed positional relationship, the distance between the fixed end of the protector 7 and the rain sensor 6 provided on the windshield 3 is constant without variation. is there. Accordingly, the protector 7 is attached to the wire harness 4 in advance by matching one end to a position where the length from the front end of the wire harness 40 to which the connector 40 is attached is substantially the same as the above-mentioned distance, so that the vehicle interior of the wire harness 4 can be obtained. Thus, the connector 40 can be reliably connected to the rain sensor 6 without causing a sag in the drawn portion and without applying a pulling force.
[0022]
【The invention's effect】
According to the present invention, the wire harness routed on the ceiling plate can be positioned and fixed with good workability and surely in the notch at the edge of the ceiling plate by a protector attached around the wire harness. Further, the protector can be securely connected to the electrical components in the passenger compartment without being slackened and without pulling force acting by attaching the protector to the wire harness at a fixed position. Furthermore, since the wire harness is covered by the protector, the wire harness does not come into contact with and damage to the joint flange of the roof panel. The present invention is not limited to the case where the wire harness drawn from the ceiling plate into the vehicle interior is connected to the rain sensor, but can be widely applied to a wiring structure that connects to other electrical components in the vehicle interior.
[Brief description of the drawings]
FIG. 1A is a sectional view of a wire harness attached to a ceiling board of an automobile according to the present invention, and FIG. 1B is a perspective view showing a state immediately before the wire harness is attached to the ceiling board. .
2A is a view corresponding to FIG. 1A of a conventional mounting structure of a wire harness, and FIG. 2B is a view corresponding to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roof panel 2 Ceiling board 21 Standing edge 22 Notch 3 Windshield 4 Wire harness 40 Connector 5 Adhesive tape 6 Electrical component (rain sensor)
7 Protector 71 Body 72a, 72b Rib 73 Protrusion

Claims

A notch is formed in the edge of the ceiling panel that covers the inner surface of the roof panel, and the wire harness routed along the back of the ceiling panel is inserted into the notch and pulled out into the passenger compartment and connected to electrical components in the passenger compartment. In the wiring structure of an automobile, the wire harness includes a body that covers the wire harness at a portion where the cutout is inserted, and a protector that includes a pair of ribs that project from the outer periphery of the body in a hook shape and face each other. Mounting, fitting the main body into the notch, and inserting the edge of the ceiling plate on both sides of the notch between the pair of ribs, and positioning the wire harness to the notch via the protector A wiring structure of an automobile characterized by being fixed.

The automobile wiring structure according to claim 1, wherein a plurality of protrusions sandwiching an edge of the ceiling plate from both sides are formed on opposing surfaces of the pair of ribs.

The pair of ribs are formed at one end in the longitudinal direction of the protector, and a connector provided at the tip of a wire harness extending from the one end to the vehicle interior with a predetermined length is connected to the electrical component. Or the wiring structure of the motor vehicle of 2.