JP3713430B2

JP3713430B2 - Harness protection protector

Info

Publication number: JP3713430B2
Application number: JP2000315085A
Authority: JP
Inventors: 律子小幡
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2000-10-16
Filing date: 2000-10-16
Publication date: 2005-11-09
Anticipated expiration: 2020-10-16
Also published as: JP2002125306A

Description

【０００１】
【発明の属する技術分野】
本発明は、樹脂成形された筐体一般について、たとえば自動車の車体パネルに配索された電線やケーブルなどのハーネス類を配索途中の要所要所において被覆保護するために、ハーネス類を挿通させた状態で車体パネルに嵌合固定されるハーネス保護プロテクタに関する。
【０００２】
【従来の技術】
ハーネス保護プロテクタは、樹脂成形された細長い筐体内にハーネス類を通して収容した状態で車体パネルに固定される。車体パネルへの固定は、係止突起と係止孔とを係合させるといった凹凸部嵌合方式が一般的である。凹凸部嵌合方式でハーネス保護プロテクタを車体パネルに固定する構造例として、先に本願出願人によって提案された実開平６−５３２０号公報に記載のプロテクタ他、実開昭６２−３２２１０号公報に記載の結合装置など多数がある。
【０００３】
図３および図４（ａ）〜（ｃ）は、凹凸部嵌合による基本構造を代表的に示したものである。概略的に説明するに、車両ボディ１を構成する車体パネル３に電線束やケーブルによるハーネスが引き回して配索され、配索途中の要所でハーネスをプロテクタ本体２に挿通させて収容し保護する。車体パネル３には係止孔４が設けてあって、この係止孔４に嵌合させてプロテクタ本体２をハーネス収容状態で車体パネル３に固定する。
【０００４】
その場合、プロテクタ本体２は、その筐体本体を形成する底板５の端部に一体にほぼ直角に支持板部６が立ち上げて設けられている。支持板部６は全体が上記車体パネル３の係止孔４に挿入して係合できる大きさと形状に設けられている。この支持板部２２の中央一部は可撓部８となっており、その両側に形成した縦スリット７ａ，７ｂと、先端を切欠して自由端とすることで樹脂弾性による撓みが可能となっている。この可撓部８の内側の立ち上がり面に凸形状の係止突起９が突設され、車体パネル３の係止孔４の孔エッジに係合できるようになっている。かかる可撓部８の先端自由端の直下すなわち図でいう下端の直下は、底板５の端部を切欠して切欠凹部７ｃが設けられている。
【０００５】
図４（ａ）〜（ｃ）は、以上の構造によるプロテクタ本体２を車体パネル３に取り付けて固定する動作を順に示している。すなわち、同図（ａ）のように、図３中の仮想線で示すハーネスを通して収容した状態のプロテクタ本体２を車体パネル３に臨ませ、係止孔４に支持板部６を位置合わせして挿入すると、係止突起９が係止孔４の孔エッジに当接する。続いて同図（ｂ）のように、係止突起９の表面は下り傾斜のテーパ面に形成されているので、その斜度で係合度合いが深まるに従って係止突起９の傾斜力で係止孔４との当接反力が高まり、その当接反力で可撓部８が樹脂特有の弾性でもって後方へのけぞるようにして撓む。可撓部８の撓みで係止突起９が車体パネル３の反対面に回り込み、同図（ｃ）のように、クリック感覚を伴って係止孔４の孔エッジに係合する。それによってプロテクタ本体２が車体パネル３に固定される。
【０００６】
【発明が解決しようとする課題】
ところで、この図３と図４（ａ）〜（ｃ）で示された従来のハーネス保護プロテクタにあっては次の問題点がある。
プロテクタ本体２の底板５の端部に直角に支持板部６が立ち上げて設けられているため、車体パネル３の係止孔４への係合時にその当接反力が支持板部６に強力に働くと、底板５から立ち上がった支持板部６の根元である底板５との隅部に図中符号Ｇで示す亀裂が発生しやすい不具合がある。
【０００７】
すなわち、図４（ｂ）の状態にあって、プロテクタ本体２側の係止突起９が車体パネル３の係止孔４のエッジに係合し始める際、その当接反力で可撓部８は後方へ撓むが、支持板部６では根元の底板５との隅部に当接反力による曲げモーメントが直に働き、後ろに倒れようとする。その力で亀裂Ｇが発生し、それが破断にまで至ると、車体パネル３に対してプロテクタ本体２の取付強度が損なわれ、配索の信頼性を低下させてしまうのである。
【０００８】
したがって、本発明の目的は、樹脂成形筐体のハーネス保護プロテクタにあって、車体パネル側に係合させて固定する際に係合力で生じる当接反力に対して係合構造部の剛性アップを図ることでハーネス類を確実に収容保護し、配索の信頼性を高めたハーネス保護プロテクタを提供することにある。
【０００９】
【課題を解決するための手段】
上記目的を達成するために、本発明にかかる請求項１に記載のハーネス保護プロテクタは、車体パネル１１に配索されたハーネス類を要所で囲い込んで保護するために、そのハーネス類を挿通させて保持した状態で車体パネルに設けた係止孔に嵌合させて固定するようにした底板などからなる樹脂成形筐体のハーネス保護プロテクタであって，前記底板２１の端部から一体に該底板２１とほぼ直角となるように立ち上げ成形された支持板部２２と，前記支持板部２２の中央部に２本の縦スリット２４ａ，２４ｂが形成され、切欠先端が樹脂弾性による撓みの可能な自由端に形成された可撓部２５と，前記可撓部２５の前記底板側の面に突設され、前記車体パネル１１の係止孔１２に係合して該係止孔１２のエッジに係止される係止突起２６と，前記可撓部２５の先端自由端の直下の前記底板２１に該底板２１を切り欠き設けられた係止部可撓孔２４ｃと，前記底板２１の端部から立ち上げた前記支持板部２２の前記底板側とは反対側に当該底板２１の一部を張り出して形成され、前記係止部可撓孔２４ｃが該底板２１の張り出し部によって閉塞孔に形成され、前記可撓部２５が前記車体パネル１１の係止孔１２のエッジによって押圧され、前記底板側とは反対側に撓んだ際に、該可撓部２５の先端自由端が当接する補強部２３と，を備えていることを特徴とする。
【００１０】
以上の構成により、車体パネル１１の係止孔１２にプロテクタ側の係止突起２６が係合し始めるとその当接反力で可撓部２５が撓み、係止突起２６が係止孔１２に係合できるようになる。可撓部２５の撓みは先端自由端が閉じきり孔の係止部可撓孔２４ｃに内側から突き当てることで適量に制限される。すなわち、従来のように可撓部２５が無制限に撓んだ場合、それだけ係合時の当接反力を支持板部２２において負担する度合いが大きくなる。そこで、撓みを規制して当接反力による負担を可撓部２５でも分担させることにより、支持板部２２に掛かる負担を軽減する。また、支持板部２２の背後につまり外側に底板２１を延長して補強部２３を設けたことで、係合時の当接反力で支持板部２２が外側に倒れようとするのを防いで強化する。以上から、底板２１上から直角に立ち上がる支持板部２２の根元である隅部に亀裂などが発生するのを抑えることができる。
【００１１】
また、請求項２記載のハーネス保護プロテクタは、前記補強部２３によって前記閉塞孔に形成された係止部可撓孔２４ｃの前記支持板部２２の立ち上げ端部から該補強部２３までの距離を，前記可撓部２５が前記車体パネル１１の係止孔１２のエッジによって押圧され、前記底板側とは反対側に撓んだ際に、該可撓部２５の撓み力によって前記支持板部２２が前記底板側に倒れ込む大きさの曲げ力が該支持板部２２に加わらない距離にしたものである。
【００１２】
以上の構成により、支持板部２２の可撓部２５の直下で底板２１を切り欠いて設けた係止部可撓孔２４ｃとしては、支持板部２２の外側で底板２１の端部から補強部２３を延長して設けたことで閉じきった孔になる。その閉じきった孔の係止部可撓孔２４ｃを可撓部２５の直下から補強部２３にまで延長した大きさとすることで、その分だけ可撓部２５の撓みが閉じきり孔に内側から突き当たるまで許容され且つ制限されることになる。それにより、可撓部２５に必要なだけの撓みを許容し、しかも撓みを制限して可撓部２５に係合時の当接反力による負担を分担させることで、支持板部２２への負担を軽減させて根元隅部における亀裂発生などに対して防護する。
【００１３】
【発明の実施の形態】
以下、本発明にかかるハーネス保護プロテクタの実施の形態について、図面を参照して詳細に説明する。図１は、本例のプロテクタ本体２０を車両ボディ１０の車体パネル１１に対してハーネス保持状態で取り付けて固定する係合部構造を示す斜視図である。また、図２（ａ）〜（ｃ）は、その係合部構造における組立順と作用を示すそれぞれの断面図である。
【００１４】
樹脂成形されたプロテクタ本体２０は底板２１などからなる筐体であり、車体パネル１１に配索された図中の符号Ｗで示す電線束やケーブルからなるワイヤハーネスをその要所で挿通させて被覆保持する。
【００１５】
プロテクタ本体２０の底板２１では、その端部に一体成形して支持板部２２が板面にほぼ直角に立ち上げられている。支持板部２２は全体が山形状で車体パネル１１に設けた係止孔１２に挿入して係合できるようになっている。また、支持板部２２の中央部は、両側に切り欠いて設けた縦スリット２４ａ，２４ｂと、直下の底板２１を切り欠いて設けた係止部可撓孔２４ｃとによって三方を囲まれた形の可撓部２５となっている。すなわち、可撓部２５の図でいう下端である先端が直下の係止部可撓孔２４ｃに臨んだ自由端となっている。そうした形状の可撓部２５に押圧力が加えられると、樹脂特有の弾性を利用して適度に撓めるようになっている。
【００１６】
また、かかる支持板部２２に設けた可撓部２５においては、その内側の立ち上がり面に凸形の係止突起２６が一体に突設されている。車体パネル１１への係合時、その係止突起２６が車体パネル１１の反対面に係止孔１２から回り込むことで、係止孔１２の孔エッジに係止されるようになっている。そうした係止突起２６は下り傾斜をつけたテーパ面を有して成形され、テーパ斜面力でパネル側係止孔１２の孔エッジとの係合力を漸次を高めつつ、樹脂特有のクリック感覚を伴いほぼワンタッチでいわゆるアンダーカット嵌合的に孔エッジに係止される。
【００１７】
一方、上記支持板部２２が立ち上がった部分の底板２１の端部では、その支持板部２２の外側に張り出すようにして底板２１の一部が延長され、その延長部を補強部２３として設けている。支持板部２２の外側に補強部２３を設けたことで、可撓部２５の直下に設けた上記係止部可撓孔２４ｃを閉じきった孔として形成でき、しかもその閉じきった孔の係止部可撓孔２４ｃを補強部２３にまで延長した大きさや形状で設けている。それによって、可撓部２５がその係止部可撓孔２４ｃの大きさ分だけ撓むことができ、逆にいうと係止部可撓孔２４ｃに内側から可撓部２５の先端自由端が突き当たることで撓みを制限されるようになっている。また、補強部２３を設けたことで、補強という本来の意味から、底板２１の端部から直角に立ち上がった支持板部２２の外側への倒れを防止するべく強化しているのである。
【００１８】
次に、以上の構成による本実施の形態のハーネス保護プロテクタについて、車体パネルに取り付けて固定する組立動作ならびに作用について図２（ａ）〜（ｃ）を参照して説明する。
【００１９】
図２（ａ）は、車体パネル１１に配索されたハーネス類を挿通させて被覆保持した状態のプロテクタ本体２０を、その車体パネル１１に係合させて固定する直前の断面図を示している。車体パネル１１の係止孔１２にプロテクタ本体２０側の支持板部２２を臨ませ、矢印で示す取付方向へプロテクタ本体２０を動かし、支持板部２２を係止孔１２に係合させる。
【００２０】
図２（ｂ）に示すように、支持板部２２における可撓部２５上の係止突起２６がそのテーパ傾斜面からパネル側係止孔１２の孔エッジに当接して係合し始める。孔エッジとの係合度合いがテーパ傾斜面の斜度で深まるに従って、係止突起２６が受ける係合力の当接反力でもって可撓部２５が樹脂特有の弾性で後方へのけぞるように撓む。
【００２１】
同じく図２（ｂ）において、後方へ撓んだ可撓部２５ではその先端自由端が閉じきり孔の係止部可撓孔２４ｃに内側から突き当たり、それ以上の撓みを制限される。可撓部２５としては、係止突起２６がパネル側係止孔１２に係合するのに必要なだけ後方へ撓むのを許容し、且つそれ以上の撓みを制限する。可撓部２５の撓みが制限されるということは、係止突起２６で受けた当接反力による負担を可撓部２５で負担することになる。すなわち、可撓部２５が当接反力による負担を分担することで、支持板部２２に働く負担が軽減される。その作用と同時に、外側に延長した補強部２３による剛性強化で支持板部２２が外側に倒れようとするのを防ぐ。
【００２２】
図２（ｃ）は、そのようにしてプロテクタ本体２０側の係止突起２６が係止孔１２を回り込んで車体パネル１１の反対面に係止した状態を示している。その間の組立操作は樹脂特有のクリック感覚を伴ってほぼワンタッチで行われ、プロテクタ本体２０を車体パネル１１に取り付けて固定することができる。
【００２３】
以上から、車体パネル１１に対してプロテクタ本体２０を好適な係合力で組み立てることができるので、従来例の図４（ａ）〜（ｃ）で示されたように、支持板部２２の立ち上がりの根元である底板２１との隅部２７から発生する亀裂Ｇなどの防止に有効であり、ワイヤハーネスＷの確実な保護と配索の信頼性を確保することができる。
【００２４】
【発明の効果】
以上説明したように、本発明にかかる請求項１に記載のハーネス保護プロテクタは、車体パネルの係止孔にプロテクタ側の係止突起が係合し始めるとその当接反力で可撓部が撓み、係止突起が係止孔に係合できるようになるが、可撓部の撓みは先端自由端が閉じきり孔の係止部可撓孔に内側から突き当たることで適量に制限される。従来のように、可撓部が無制限に撓んだ場合、それだけ係合時の当接反力を支持板部において負担する度合いが大きくなるが、撓みを規制して当接反力による負担を可撓部でも分担させることにより、支持板部に掛かる負担を軽減する。また、支持板部の背後につまり外側に底板を延長して補強部を設けたことで、係合時の当接反力で支持板部が外側に倒れようとするのを防いで強化する。以上から、底板上から直角に立ち上がる支持板部の根元の隅部に亀裂などが発生するのを防護でき、所要の係合強度でもってプロテクタが車体パネルに取り付けられるので、電線束やケーブルによるハーネス類を確実に保護して配索の信頼性を高めるのに有効である。
【００２５】
また、請求項２に記載のハーネス保護プロテクタは、支持板部の可撓部の直下で底板を切り欠いて設けた係止部可撓孔としては、支持板部の外側で底板の端部から補強部を延長して設けたことで閉じきった孔になる。その閉じきった孔の係止部可撓孔を可撓部の直下から補強部にまで延長した大きさとすることで、その分だけ可撓部の撓みが閉じきり孔に内側から突き当たるまで許容され且つ制限され、それにより可撓部に必要なだけの撓みを許容し、しかも撓みを制限して可撓部に係合時の当接反力による負担を分担させることで、支持板部への負担を軽減させて根元隅部における亀裂発生などに対して防護することができる。
【図面の簡単な説明】
【図１】本発明にかかるハーネス保護プロテクタの実施の形態において車体パネル側への組立前を示す分解斜視図である。
【図２】同図（ａ）〜（ｃ）は、車体パネルの係止孔にプロテクタ側の係止突起を係合させる時の動作順と作用を示す図１中矢印Ａ−Ａ線からの断面図である。
【図３】従来例のハーネス保護プロテクタにおいて組立前の状態を示す分解斜視図である。
【図４】同図（ａ）〜（ｃ）は、同従来例において車体パネルの係止孔にプロテクタ側の係止突起を係合させる時の動作順と作用を示すそれぞれの断面図である。
【符号の説明】
１０：車両ボディ
１１：車体パネル
１２：係止孔
２０：プロテクタ本体
２１：底板
２２：支持板部
２３：補強部
２４ａ，２４ｂ：縦スリット
２４ｃ：係止部可撓孔
２５：可撓部
２６：係止突起
２７：支持板部の立ち上がり隅部
Ｗ：ワイヤハーネス[0001]
BACKGROUND OF THE INVENTION
The present invention provides a resin-molded casing in general, for example, in order to cover and protect harnesses such as electric wires and cables routed on a body panel of an automobile at a necessary point during wiring. The present invention relates to a harness protection protector that is fitted and fixed to a vehicle body panel.
[0002]
[Prior art]
The harness protection protector is fixed to the vehicle body panel in a state where the harness protection protector is housed through the harness in a resin-molded elongated casing. The fixing to the vehicle body panel is generally an uneven portion fitting method in which a locking projection and a locking hole are engaged. As an example of a structure for fixing the harness protection protector to the vehicle body panel by the concave and convex portion fitting method, the protector described in Japanese Utility Model Laid-Open No. 6-5320 previously proposed by the applicant of the present application, and Japanese Utility Model Laid-Open No. 62-32210. There are a number of coupling devices described.
[0003]
3 and 4 (a) to 4 (c) representatively show the basic structure by fitting the concave and convex portions. Briefly described, a harness made of an electric wire bundle or a cable is routed and routed on a vehicle body panel 3 constituting the vehicle body 1, and the harness is inserted into the protector main body 2 to be accommodated and protected at important points during the routing. . The vehicle body panel 3 is provided with a locking hole 4, and the protector main body 2 is fixed to the vehicle body panel 3 in a harness housing state by being fitted into the locking hole 4.
[0004]
In that case, the protector main body 2 is provided with a support plate portion 6 raised integrally at an almost right angle to the end of the bottom plate 5 forming the housing main body. The entire support plate portion 6 is provided in a size and shape that can be inserted into and engaged with the locking hole 4 of the vehicle body panel 3. A part of the center of the support plate portion 22 is a flexible portion 8, and the longitudinal slits 7a and 7b formed on both sides thereof and the free end by notching the tip can be bent by resin elasticity. ing. A convex locking projection 9 projects from the rising surface inside the flexible portion 8 so that it can be engaged with the hole edge of the locking hole 4 of the vehicle body panel 3. Immediately below the free end of the flexible portion 8, that is, directly below the lower end in the figure, an end portion of the bottom plate 5 is notched and a notch recess 7 c is provided.
[0005]
4A to 4C sequentially show the operation of attaching and fixing the protector main body 2 having the above structure to the vehicle body panel 3. That is, as shown in FIG. 3A, the protector main body 2 accommodated through the harness indicated by the phantom line in FIG. 3 faces the vehicle body panel 3, and the support plate portion 6 is aligned with the locking hole 4. When inserted, the locking projection 9 comes into contact with the hole edge of the locking hole 4. Subsequently, since the surface of the locking projection 9 is formed as a downwardly inclined taper surface as shown in FIG. 5B, the locking projection 9 is locked by the tilting force of the locking projection 9 as the degree of engagement increases. The contact reaction force with the hole 4 is increased, and the flexible reaction portion 8 is bent by the contact reaction force with the elasticity unique to the resin. Due to the bending of the flexible portion 8, the locking projection 9 turns around the opposite surface of the vehicle body panel 3 and engages with the hole edge of the locking hole 4 with a click feeling as shown in FIG. Thereby, the protector main body 2 is fixed to the vehicle body panel 3.
[0006]
[Problems to be solved by the invention]
Incidentally, the conventional harness protection protector shown in FIG. 3 and FIGS. 4A to 4C has the following problems.
Since the support plate portion 6 is provided at a right angle to the end portion of the bottom plate 5 of the protector body 2, the contact reaction force is applied to the support plate portion 6 when the body panel 3 is engaged with the locking hole 4. If it works powerfully, there is a problem that cracks indicated by symbol G in the figure are likely to occur at the corners with the bottom plate 5 that is the base of the support plate 6 rising from the bottom plate 5.
[0007]
That is, in the state of FIG. 4 (b), when the locking projection 9 on the protector body 2 side starts to engage with the edge of the locking hole 4 of the vehicle body panel 3, the abutment reaction force causes the flexible portion 8. Is bent backward, but in the support plate portion 6, a bending moment due to the contact reaction force acts directly on the corner with the bottom plate 5 at the base, and tends to fall backward. If the crack G is generated by the force and the crack G is broken, the mounting strength of the protector body 2 with respect to the vehicle body panel 3 is impaired, and the reliability of the wiring is lowered.
[0008]
Accordingly, an object of the present invention is to provide a harness protection protector for a resin-molded housing, and to increase the rigidity of the engagement structure portion against the contact reaction force generated by the engagement force when engaged and fixed to the vehicle body panel side. It is to provide a harness protection protector that reliably accommodates and protects harnesses and improves the reliability of wiring.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the harness protection protector according to claim 1 of the present invention inserts the harnesses so as to surround and protect the harnesses arranged in the vehicle body panel 11 at important points. A harness protection protector for a resin-molded casing made of a bottom plate or the like that is fitted and fixed to a locking hole provided in the vehicle body panel in a state of being held, and is integrally formed from an end of the bottom plate 21. a bottom plate 21 and the support plate portion 22 which is substantially raised so that the right angle molding, the two longitudinal slits 24a in the central portion of the support plate portions 22, 24b are formed, can notch tip deflection by the resin elastic such a flexible portion 25 formed at the free end, projecting from the surface of the bottom plate side of the flexible portion 25, the edge of the locking hole 12 engages with the engagement hole 12 of the vehicle body panel 11 A locking projection 26 to be locked to And the locking portion flexible hole 24c of the bottom plate 21 just below the tip free end of the flexible portion 25 provided notch the bottom plate 21, launched from the end portion of the bottom plate 21 of the support plate portion 22 wherein the bottom plate side is formed to protrude a part of the bottom plate 21 on the opposite side, the locking portion flexible hole 24c is formed in the closed hole by projecting portions of the bottom plate 21, the flexible portion 25 is the body is pressed by the edge of the engagement hole 12 of the panel 11, when said bottom plate side flexed to the opposite side, Tei Rukoto includes a reinforcing portion 23 which the tip free end of the flexible portion 25 abuts, the It is characterized by.
[0010]
With the configuration described above, when the locking projection 26 on the protector side starts to engage with the locking hole 12 of the vehicle body panel 11, the flexible portion 25 bends by the contact reaction force, and the locking projection 26 becomes the locking hole 12. It becomes possible to engage. The bending of the flexible portion 25 is limited to an appropriate amount by allowing the free end of the distal end to abut against the locking portion flexible hole 24c of the closed hole from the inside. That is, when the flexible portion 25 bends indefinitely as in the prior art, the degree to which the contact reaction force at the time of engagement is borne in the support plate portion 22 increases accordingly. Therefore, the burden on the support plate portion 22 is reduced by restricting the bending and causing the flexible portion 25 to share the load due to the contact reaction force. In addition, by extending the bottom plate 21 behind the support plate portion 22, that is, outside, and providing the reinforcing portion 23, the support plate portion 22 is prevented from falling outward due to a contact reaction force during engagement. Strengthen with. From the above, it is possible to suppress the occurrence of cracks and the like at the corners that are the roots of the support plate portion 22 that rises at a right angle from the bottom plate 21.
[0011]
The harness protection protector according to claim 2 is a distance from the rising end portion of the support plate portion 22 of the locking portion flexible hole 24 c formed in the blocking hole by the reinforcing portion 23 to the reinforcing portion 23. When the flexible portion 25 is pressed by the edge of the locking hole 12 of the vehicle body panel 11 and is bent to the side opposite to the bottom plate side, the supporting plate portion is caused by the bending force of the flexible portion 25. The bending force of such a magnitude that 22 falls to the bottom plate side is set to such a distance that the support plate portion 22 is not applied.
[0012]
With the above configuration, the locking portion flexible hole 24c provided by cutting out the bottom plate 21 directly below the flexible portion 25 of the support plate portion 22 is provided on the outside of the support plate portion 22 from the end of the bottom plate 21 to the reinforcing portion. By extending 23, it becomes a closed hole. The locking hole flexible hole 24c of the closed hole is made to have a size that extends from directly below the flexible part 25 to the reinforcing part 23, so that the bending of the flexible part 25 from the inside to the closed hole from the inside. It will be allowed and limited until hit. As a result, the flexible portion 25 is allowed to bend as much as necessary, and further, by restricting the bending and causing the flexible portion 25 to share the load due to the contact reaction force at the time of engagement, Reduce the burden and protect against cracks at the corners of the roots.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a harness protection protector according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an engaging portion structure for attaching and fixing the protector body 20 of this example to the vehicle body panel 11 of the vehicle body 10 in a harness holding state. FIGS. 2A to 2C are cross-sectional views showing the assembling order and operation in the engaging portion structure.
[0014]
The resin-molded protector body 20 is a housing made of a bottom plate 21 and the like, and a wire harness made up of a wire bundle and a cable indicated by the symbol W in the figure routed on the vehicle body panel 11 is inserted at the necessary points to cover the body. Hold.
[0015]
The bottom plate 21 of the protector main body 20 is integrally formed at the end thereof, and the support plate portion 22 is raised substantially perpendicular to the plate surface. The support plate portion 22 has a mountain shape as a whole and can be inserted into and engaged with a locking hole 12 provided in the vehicle body panel 11. The central portion of the support plate portion 22 is surrounded by three sides by vertical slits 24a and 24b cut out on both sides and a locking portion flexible hole 24c provided by cutting out the bottom plate 21 directly below. The flexible portion 25 is formed. That is, the tip which is the lower end in the figure of the flexible portion 25 is a free end facing the locking portion flexible hole 24c directly below. When a pressing force is applied to the flexible portion 25 having such a shape, the elastic portion peculiar to the resin is used to bend appropriately.
[0016]
Moreover, in the flexible part 25 provided in this support plate part 22, the convex-shaped latching protrusion 26 is protrudingly provided by the rising surface inside. At the time of engagement with the vehicle body panel 11, the engagement protrusion 26 turns around the opposite surface of the vehicle body panel 11 from the engagement hole 12, thereby being engaged with the hole edge of the engagement hole 12. Such a locking projection 26 is formed with a taper surface having a downward slope, and gradually increases the engagement force with the hole edge of the panel side locking hole 12 by the taper slope force, and has a click feeling peculiar to resin. It is locked to the hole edge in a so-called undercut fit with almost one touch.
[0017]
On the other hand, at the end portion of the bottom plate 21 where the support plate portion 22 rises, a part of the bottom plate 21 is extended so as to project outside the support plate portion 22, and the extended portion is provided as the reinforcing portion 23. ing. Since the reinforcing portion 23 is provided outside the support plate portion 22, the locking portion flexible hole 24c provided immediately below the flexible portion 25 can be formed as a closed hole, and the engagement of the closed hole can be formed. The stop portion flexible hole 24 c is provided in a size or shape that extends to the reinforcing portion 23. Accordingly, the flexible portion 25 can be bent by the size of the locking portion flexible hole 24c. Conversely, the free end of the flexible portion 25 is inserted into the locking portion flexible hole 24c from the inside. The deflection is limited by hitting. Further, by providing the reinforcing portion 23, it is strengthened so as to prevent the support plate portion 22 rising from the end portion of the bottom plate 21 from falling to the outside from the original meaning of reinforcement.
[0018]
Next, the assembly operation and action of attaching and fixing the harness protection protector according to the present embodiment to the vehicle body panel will be described with reference to FIGS. 2 (a) to 2 (c).
[0019]
FIG. 2A is a cross-sectional view immediately before the protector body 20 in a state where the harnesses routed through the vehicle body panel 11 are inserted and covered to be engaged and fixed to the vehicle body panel 11. . The support plate 22 on the protector main body 20 side faces the locking hole 12 of the vehicle body panel 11, the protector main body 20 is moved in the mounting direction indicated by the arrow, and the support plate 22 is engaged with the locking hole 12.
[0020]
As shown in FIG. 2B, the locking protrusion 26 on the flexible portion 25 in the support plate portion 22 starts to contact and engage with the hole edge of the panel side locking hole 12 from the tapered inclined surface. As the degree of engagement with the hole edge is increased by the inclination of the taper inclined surface, the flexible portion 25 bends backward with elastic elasticity peculiar to the resin by the contact reaction force of the engagement force received by the locking projection 26. .
[0021]
Similarly, in FIG. 2B, the flexible portion 25 bent rearward has its free end at the end abutted against the locking hole flexible hole 24c of the closed hole, and further bending is restricted. As the flexible portion 25, the locking projection 26 is allowed to bend backward as much as necessary to engage with the panel side locking hole 12, and further bending is limited. The fact that the bending of the flexible portion 25 is restricted means that the flexible portion 25 bears a burden due to the contact reaction force received by the locking projection 26. That is, since the flexible portion 25 shares the load due to the contact reaction force, the load acting on the support plate portion 22 is reduced. Simultaneously with the action, the support plate portion 22 is prevented from falling outward due to the rigidity enhancement by the reinforcing portion 23 extended outward.
[0022]
FIG. 2 (c) shows a state in which the locking projection 26 on the protector body 20 side goes around the locking hole 12 and is locked to the opposite surface of the vehicle body panel 11. The assembly operation in the meantime is performed with almost one touch with a click sensation peculiar to resin, and the protector body 20 can be attached and fixed to the vehicle body panel 11.
[0023]
From the above, the protector main body 20 can be assembled to the vehicle body panel 11 with a suitable engagement force, so that the support plate portion 22 rises as shown in FIGS. This is effective in preventing cracks G generated from the corners 27 with the bottom plate 21 that is the base, and secure protection of the wire harness W and reliability of wiring can be ensured.
[0024]
【The invention's effect】
As described above, in the harness protection protector according to the first aspect of the present invention, when the locking projection on the protector side starts to engage with the locking hole of the vehicle body panel, the flexible portion is caused by the contact reaction force. The bending and the locking projection can be engaged with the locking hole, but the bending of the flexible portion is limited to an appropriate amount when the distal end free end abuts against the locking portion flexible hole of the closed hole. If the flexible part bends indefinitely as in the past, the degree of burdening the contact reaction force at the time of engagement on the support plate part increases. By sharing even the flexible portion, the burden on the support plate portion is reduced. Further, the reinforcing plate is provided by extending the bottom plate behind the support plate portion, that is, outside, thereby strengthening the support plate portion by preventing the support plate portion from falling outward due to the contact reaction force during engagement. From the above, it is possible to protect cracks from occurring at the corners of the base of the support plate that rises perpendicularly from the bottom plate, and the protector can be attached to the vehicle body panel with the required engagement strength. It is effective to ensure the protection of the kind and increase the reliability of the routing.
[0025]
Further, the harness protection protector according to claim 2 is configured so that the locking portion flexible hole provided by cutting out the bottom plate immediately below the flexible portion of the support plate portion is provided from the end portion of the bottom plate outside the support plate portion. It becomes a closed hole by extending the reinforcing part. Locking part of the closed hole The flexible hole is sized to extend from directly under the flexible part to the reinforcing part, so that the bending of the flexible part is allowed until it hits the closed hole from the inside. In addition, the flexure is allowed to bend as much as necessary, and the flexure is limited to share the burden due to the contact reaction force at the time of engagement. It is possible to reduce the burden and protect against the occurrence of cracks at the corners of the root.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a harness protection protector according to an embodiment of the present invention before assembly on a vehicle body panel side.
FIGS. 2 (a) to 2 (c) are views taken from the line AA in FIG. 1 showing the operation sequence and action when engaging the locking protrusion on the protector side with the locking hole of the vehicle body panel. It is sectional drawing.
FIG. 3 is an exploded perspective view showing a state before assembly in a conventional harness protection protector.
4 (a) to 4 (c) are cross-sectional views showing the order of operation and action when engaging the locking protrusion on the protector side with the locking hole of the vehicle body panel in the conventional example. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10: Vehicle body 11: Car body panel 12: Locking hole 20: Protector main body 21: Bottom plate 22: Support plate part 23: Reinforcement part 24a, 24b: Vertical slit 24c: Locking part flexible hole 25: Flexible part 26: Locking protrusion 27: Standing corner of support plate W: Wire harness

Claims

In order to enclose and protect the harnesses routed on the vehicle body panel at important points, the harnesses are inserted and held in a state where the harnesses are fitted and fixed in the locking holes provided in the vehicle body panel. A harness protection protector for a resin-molded housing consisting of a bottom plate, etc.
A support plate portion that is raised so as to be substantially perpendicular to the bottom plate integrally molded from the end portion of the bottom plate,
And the supporting plate portion two longitudinal slits in the central portion is formed of a notch tip formed on the free end capable of bending by the resin elastic flexible portion,
Projecting from the surface of the bottom plate side of the flexible portion, and a locking projection to be locked to the edge of the locking hole engaged with the locking hole of the vehicle body panel,
And the locking portion flexible hole provided notch the bottom plate to the bottom plate just below the tip free end of the flexible portion,
Said bottom plate wherein the bottom plate side of the supporting plate portion launched from the end portion of the formed overhang a portion of the bottom plate on the opposite side, the locking portion flexible hole in closed hole by projecting portions of the bottom plate is formed, the flexible portion is pressed by the locking holes of the edge of the vehicle body panel, wherein the bottom plate side when flexed to the opposite side, and a reinforcing portion which tip the free end of the flexible portion makes contact ,
Harness protective protector, characterized in Tei Rukoto equipped with.

The distance from the rising end of the support plate portion of the locking portion flexible hole formed in the blocking hole by the reinforcing portion to the reinforcing portion is:
When the flexible portion is pressed by the edge of the locking hole of the vehicle body panel and bent to the side opposite to the bottom plate side, the support plate portion falls to the bottom plate side by the bending force of the flexible portion. The harness protection protector according to claim 1, wherein the harness protection protector is a distance at which a bending force having a magnitude is not applied to the support plate portion .