JP3698624B2

JP3698624B2 - Mating structure of resin molded products for vehicles

Info

Publication number: JP3698624B2
Application number: JP2000255451A
Authority: JP
Inventors: 正太田; 正洋高橋; 智徳田中
Original assignee: Visteon Japan Ltd; Ikuyo Co Ltd
Current assignee: Visteon Japan Ltd; Ikuyo Co Ltd
Priority date: 2000-08-25
Filing date: 2000-08-25
Publication date: 2005-09-21
Anticipated expiration: 2020-08-25
Also published as: JP2002067974A

Description

【０００１】
【発明の属する技術分野】
本発明は、車両に装備される半割形状のコラムカバー等、少なくとも２つの成形品からなる車両用樹脂成形品の嵌合構造に関し、特に、両成形品の着脱を容易化するための技術分野に属する。
【０００２】
【従来の技術】
従来より、この種の車両用樹脂成形品の嵌合構造として、例えば特開平１−１０５００５号公報、特開平１−２５０６０６号公報、実開平３−３１５３７号公報等に示されるものが知られている。上記特開平１−１０５００５号公報（従来例１）には、車両用コラムカバーとなる半割形状のロア部材（取付部材）又はアッパ部材（被取付部材）の一方の合わせ面近くの内面に、嵌入溝を有する被固定部を突設する一方、ロア部材又はアッパ部材の他方の合わせ面近くの内面に、上記嵌入溝と対応する係合溝を有する被係合部を上記被固定部と対向するように突設し、これら被固定部及び被係合部をそれぞれの嵌入溝及び係合溝に嵌入されるクリップにより結合することで、ロア部材及びアッパ部材を一体的に組み付ける構造が示されている。
【０００３】
また、特開平１−２５０６０６号公報に示されるもの（従来例２）では、互いに組み付けられる２つの部材の一方に、組付方向に延びかつ可撓性を有する係合片を突設して、その係合片の側面に凹部からなる係合部を形成する一方、他方の部材に、上記係合片が挿通される挿通孔と、その挿通孔の周辺から延びる係止爪とを設け、両部材の組付時に係合片を挿通孔に挿通させて、その挿通孔に挿通された係合片の係合部（凹部）に係止爪の先端部を係合させることで、両部材を組み付けることが提案されている。そして、このものでは、その従来技術として、一方の部材に、先端に係止部を、また基端にリブをそれぞれ有する爪を設ける一方、他方の部材に爪が挿通可能な挿通孔を有する箱部を形成し、この挿通孔に挿通された爪の係止部を挿通孔の端部に係合することで、両部材を結合する構造が示されている。
【０００４】
さらに、実開平３−３１５３７号公報に示されるもの（従来例３）では、車両用コラムカバーとなる成形品本体の表面に表皮材が貼り合わされた２つの合成樹脂部品の一方の部品の内面にリブを形成して、そのリブに、先端に係合部を有する抜止めピンを合わせ面から突出するように設ける一方、他方の部品の内面にもリブを形成して、そのリブに上記抜止めピンの係合部に係合する爪部を突設し、抜止めピンの係合部と爪部との係合により両部品を一体的に組み付けるようになされている。
【０００５】
【発明が解決しようとする課題】
しかし、上記従来例１（特開平１−１０５００５号公報）では、一方の部材内面の被固定部と、他方の部材内面の被係合部とを各々の嵌入溝及び係合溝へ嵌入されるクリップにより結合して両部材を一体的に組み付けるので、別部品としてクリップが必要となるとともに、両部材の着脱時に両部材の内部でクリップを嵌入溝及び係合溝へ嵌入させ又は両溝から抜き出す作業が困難であり、両部材の着脱が面倒であった。
【０００６】
また、従来例２，３では、一方の部材の係合部と他方の部材の爪とを係合する構造を採用してはいるものの、やはり、その爪と係合部とを係合又は係合解除して両部材を着脱することが困難であり、その着脱時に爪が破損する虞れがあった。
【０００７】
特に、従来例２では、係合片の係合部（凹部）と係止爪の先端部とが係合片の挿入方向に対し直角に延びる面で係合しているので、両部材の分離時に係合片を該係合片の反挿入方向に移動させるだけでは係合片と係止爪との係合が解除されず、敢えて係合片を該係合片の反挿入方向と平行に移動させると、係止爪が破損する。従って、係止爪の先端部を係合片の挿入方向に対し直角に延びる方向に移動させる必要があり、両部材の取外しが困難となる。
【０００８】
また、係合片及び該係合片が挿通される挿通孔を組付部材の外側（意匠面側）に突出させて形成しているため、成形のための成形型が大型化して製造コストが増大するとともに、組付部材の外観見映えも悪くなるという欠点がある。
【０００９】
尚、この従来例２における従来の構造では、一方の部材の爪を他方の部材の挿通孔に挿通する際、爪の基端部のリブが挿通孔の開口端に押し付けられて削られるという問題がある。
【００１０】
本発明は斯かる諸点に鑑みてなされたものであり、その目的は、２つの成形品が両者の外面を略面一にして端面の当接状態で各々の爪の係合により着脱可能に組み付けられる場合に、その嵌合構造に工夫を加えることにより、小型の嵌合構造でもってかつ係止のための爪の破損を招くことなく両成形品を容易に着脱できるようにすることにある。
【００１１】
【課題を解決するための手段】
上記の目的を達成すべく、請求項１の発明では、第１当接面を有する第１成形品と第２当接面を有する第２成形品とが、各々の外面の意匠面を略面一とするように上記当接面同士を当接せしめて着脱可能に組み付けられてなる車両用樹脂成形品の嵌合構造が対象である。
【００１２】
そして、上記第１成形品の内面に、上記第１当接面と略面一の表面を有する略矩形状のフランジ部が突設され、このフランジ部の周囲辺部のうち第１成形品の内面と略直交する方向に延びる１対の辺部からそれぞれ第１成形品の内面に連続する１対のリブが形成されている。また、上記フランジ部に略矩形状の開口部が形成され、この開口部の周辺部のうち第１成形品の内面と対向する辺部に開口部の幅を上記フランジ部の表面から離れるに連れて徐々に狭くするように傾斜して延びる延長部が形成され、この延長部と上記１対のリブとの間にそれぞれスリットが形成されていて、該スリットにより上記延長部に可撓性を有する第１爪が設けられている。
【００１３】
一方、上記第２成形品の内面に、上記第２当接面を残した状態で該第２当接面を基端として第１成形品側に向かって突出しかつ第１及び第２成形品の組付状態で上記開口部に挿入されて第１爪に係合する第２爪が形成され、この第２爪の先端に爪部が設けられていて、該爪部は、第２爪の先端側に向かって第２成形品の内面から離れる側に向かうように第２爪の挿入方向に対し鈍角に延びかつ上記第１爪に係合する係合面を有している。そして、第１及び第２成形品の着脱時に上記第１爪が第２爪に対し離反する側に撓むように構成されている。また、上記第２爪の外側に、第１及び第２成形品の組付状態で外面の意匠面が略面一になるように第１成形品の内面に当接する当接部が形成されている。
【００１４】
上記の構成によれば、第１及び第２成形品を組み付けるとき、両成形品を各々の当接面が当接するように接近させると、第２成形品の第２爪が第１成形品におけるフランジ部の開口部に挿入されて、その第２爪に対し第１成形品の第１爪が離反する側に撓みながら、第２爪先端の爪部の係合面が第１爪に係合し、この両爪の係合により両成形品同士が組み付けられる。この状態では、両成形品の当接面同士が当接し、両成形品外面の意匠面が互いに略面一となって組み付けられる。
【００１５】
一方、この組付状態の両成形品同士を分離させるときには、両成形品を各々の当接面が離隔するように引き離す。すると、上記組付時と同様に、第２成形品の第２爪に対し第１成形品の第１爪が離反する側に撓みながら、第２爪先端の爪部の係合面と第１成形品の第１爪との係合が外れ、その第２成形品の第２爪が第１成形品におけるフランジ部の開口部から抜け出て、両成形品が分離される。
【００１６】
そのとき、上記第２爪先端の爪部の係合面は、第２爪の先端側に向かって第２成形品の内面から離れる側に向かうように挿入方向に対し鈍角に延びており、しかも、成形品の着脱時に第１爪が第２爪に対し離反する側に撓むので、両成形品を着脱時に各々の当接面が接離するように相対移動させるだけで、第１爪が第２爪に対し離反する側に撓みながら、両爪が係合し又はそれらの係合が解除されるようになる。よって、両成形品の着脱を容易に行うことができ、上記係脱時に爪が破損することもない。
【００１７】
また、上記第２爪の外側に、第１及び第２成形品の組付状態で外面の意匠面が略面一になるように第１成形品の内面に当接する当接部が形成されているので、第１及び第２爪の係合により両成形品同士が組み付けられた状態では、第２爪外側の当接部が第１成形品の内面に当接して両成形品が各々の外面の意匠面を略面一として位置決めされ、外面の意匠面を略面一とする両成形品の位置決めを容易に行うことができ、よって両成形品を外観の見映えよく組み付けることができる。
【００１８】
請求項２の発明では、第１成形品のフランジ部における開口部の周辺部のうち第１成形品の内面と略直交する方向に延びる１対の辺部に、第１及び第２成形品の組付時に上記開口部に挿入される第２爪を上記１対の辺部間の略中央にガイドする傾斜面が形成されている構成とする。こうすると、両成形品の組付時に第２成形品の第２爪が第１成形品におけるフランジ部の開口部に挿入される際、その第２爪が開口部における１対の側辺部の傾斜面により辺部間の略中央に案内されるので、その第２爪を第１爪に係合するように正確に案内して、両成形品の組付けをさらに容易に行うことができる。
【００１９】
請求項３の発明では、第２爪の内面に第２成形品の内面から連続して延びるリブが突設されている構成とする。このことで、第２爪の強度をリブによって向上させることができる。
【００２０】
請求項４の発明では、第１及び第２成形品は、車両のステアリングシャフトの周りに該ステアリングシャフトを覆うように組み付けられる半割形状のコラムカバーを構成している。すなわち、外面が意匠面とされた半割形状のコラムカバーを爪を破損することなく容易に着脱することができる。
【００２１】
【発明の実施の形態】
図８は本発明の実施形態の全体構成を示し、１は第１成形品としての例えばポリプロピレン等からなる樹脂製の第１コラムカバー、２は第２成形品としての同様の樹脂製の第２コラムカバーであって、これら両コラムカバー１，２は、略矩形状の有底箱体を２分割した半割形状をなしていて、車両のステアリングシャフト（図示せず）の周りに該ステアリングシャフトを覆うように組み付けられる。尚、以下の説明では、説明を容易化するために便宜上、図８に示す如く第１コラムカバー１を下側に、また第２コラムカバー２を上側にそれぞれ配置して両コラムカバー１，２を上下方向に組み付ける構造として説明するが、両コラムカバー１，２の配置関係はこれに限定されないのは勿論である。
【００２２】
すなわち、図８で下側に示す第１コラムカバー１は、４つの周辺のうちの３辺が側壁１ａ〜１ｃに囲まれた半割箱状のもので、その対向する１対の側壁１ａ，１ｂの双方には矩形状凹部３，３が、また該両側壁１ａ，１ｂに挟まれた残りの側壁１ｃには半円形状凹部４がそれぞれ切欠き状に形成されている。一方、図８に上側に示す第２コラムカバー２も、第１コラムカバー１と同様に、４つの周辺のうちの３辺が側壁２ａ〜２ｃに囲まれた半割箱状のもので、その対向する両側壁２ａ，２ｂには矩形状凹部５，５が上記第１コラムカバー１の矩形状凹部３，３に対応して、また該両側壁２ａ，２ｂに挟まれた側壁２ｃには半円形状凹部６が第１コラムカバー１の半円形状凹部４に対応してそれぞれ切欠き状に形成されており、図示しないが、両コラムカバー１，２同士が組み付けられた状態で、両コラムカバー１，２の対応する両半円形状凹部４，６によりステアリングシャフトを挿通させる円形状のシャフト挿通孔が、また両コラムカバー１，２の対応する矩形状凹部３，５により方向指示レバーやワイパ操作レバー等の操作レバー（図示せず）を挿通させる矩形状のレバー挿通孔がそれぞれ形成される。
【００２３】
第１コラムカバー１の第２コラムカバー２との対向面たる上端面（各側壁１ａ〜１ｃの端面）は第１当接面８に、また第２コラムカバー２の第１コラムカバー１との対向面たる下端面（各側壁２ａ〜２ｃの端面）は第２当接面９にそれぞれ形成されている。また、各コラムカバー１，２の外面は意匠面に形成されており、両コラムカバー１，２は、各々の外面（意匠面）を面一とするように当接面８，９同士を当接せしめて着脱可能に組み付けられる。
【００２４】
上記両コラムカバー１，２の嵌合構造について説明すると、第１コラムカバー１の対向する１対の側壁１ａ，１ｂにおいて、図８で左側に示す側壁１ｂの開放端（上記側壁１ｃと対向する部分）寄り部分と、右側に示す側壁１ａの反開放端寄り部分との双方の内面（裏面）にはそれぞれ被係合部１１，１１が形成されている。この両被係合部１１，１１はいずれも同じ構造で、図１、図３〜図５に拡大詳示するように、第１コラムカバー１の内面に突設された略矩形状のフランジ部１２を備え、このフランジ部１２の表面（上面）は上記第１当接面８に面一とされている。また、このフランジ部１２の周囲辺部１２ａ〜１２ｄのうち第１コラムカバー１の内面と略直交する方向に延びる１対の辺部１２ａ，１２ｂからそれぞれ下方（第１コラムカバー１の底側）に互いに平行に延びる１対のリブ１３，１３が一体に突設され、この各リブ１３は第１コラムカバー１の内面（裏面）に連続して一体に形成されている。
【００２５】
また、上記フランジ部１２には略矩形状の開口部１４が形成されている。この開口部１４の周辺部（フランジ部１２の周囲辺部１２ａ〜１２ｄ）のうち第１コラムカバー１の内面（裏面）と対向する辺部１２ｃには下方に延びる延長部１５が一体に形成され、この延長部１５は、上記開口部１４の幅（上記辺部１２ｃと第１コラムカバー１の内面との間の開口幅）をフランジ部１２の表面から離れるに連れて徐々に狭くするように下方に向かって第１コラムカバー１の内面（裏面）に向かう方向に傾斜している。
【００２６】
そして、上記延長部１５の両側には上記１対のリブ１３，１３との間にそれぞれスリット１６，１６が形成されており、このスリット１６，１６により延長部１５に、可撓性を有する第１爪１７が形成されている。
【００２７】
また、上記フランジ部１２における開口部１４の周辺部１２ａ〜１２ｄのうち第１コラムカバー１の内面（裏面）と略直交する方向に延びる１対の辺部１２ａ，１２ｂにおける開口端（上端）には、両コラムカバー１，２の組付時に上記開口部１４に挿入される後述の第２爪２３を上記１対の辺部１２ａ，１２ｂ間の略中央にガイドする第１傾斜面１８，１８が形成されている。尚、開口部１４の周辺部のうち第１コラムカバー１の内面（裏面）と平行な方向に延びる１対の辺部１２ｃ，１２ｄにおける開口端（上端）には、両コラムカバー１，２の組付時に第２爪２３の挿入を容易にする第２傾斜面１９，１９が形成されている。
【００２８】
これに対し、第２コラムカバー２の対向する１対の側壁２ａ，２ｂにおいて、図８で左側に示す側壁２ｂの開放端（上記側壁２ｃと対向する部分）寄り部分と、右側に示す側壁２ａの反開放端寄り部分との双方の内面（裏面）には、それぞれ係合部２２，２２が上記第１コラムカバー１の被係合部１１，１１に対応して形成されている。この両係合部２２，２２はいずれも同じ構造で、図２〜図５に拡大して示す如く、第２コラムカバー２の内面から第１コラムカバー１側（下側）に向かって突設された第２爪２３を備え、この第２爪２３は、第２コラムカバー２下端の第２当接面９を残した状態で該第２当接面９を基端として第１コラムカバー１側に向かって突出している。第２爪２３は両コラムカバー１，２の組付時に上記第１コラムカバー１におけるフランジ部１２の開口部１４に挿入されるもので、下方に向かうに連れて第２コラムカバー２の内面（裏面）から離れるように傾斜して延びる爪本体２４と、この爪本体２４の先端部（下端部）に連続する爪部２５とを有し、上記爪本体２４の基端外面には、該基端外面を部分的に上下方向つまり第２コラムカバー２の内面と平行な方向に切り欠いてなりかつ上端が第２当接面９の内端に交差する当接部２６が形成されており、図５に示すように、両コラムカバー１，２の組付状態で第２爪２３が第１コラムカバー１におけるフランジ部１２の開口部１４に挿入されたときに、両コラムカバー１，２外面（意匠面）が面一になるように当接部２６が第１コラムカバー１の内面に開口部１４内で密着状に当接する。
【００２９】
また、図３〜図５に示す如く、上記第２爪２３先端の爪部２５は、第２爪２３の先端側に向かって第２コラムカバー２の内面に近付く側に傾斜する案内面２７と、この案内面２７の基端側（上側）に連続し、第２爪２３の先端側に向かって第２コラムカバー２内面から離れる側（第２コラムカバー２内の中央側）に向かうように挿入方向（上下方向）に対し鈍角の角度θ（図３〜図５参照）で延びる係合面２８とを有しており、第１及び第２コラムカバー１，２の組付状態で、第２爪２３が第１コラムカバー１の開口部１４に挿入されて係合面２８にて第１爪１７に係合する。そして、第１及び第２コラムカバー１，２の着脱時には、図４に示すように、第１爪１７が第２爪２３に対し離反する側（第１コラムカバー１内の中央側）に撓むようになっている。
【００３０】
また、上記第２爪２３の内面において幅方向の両端部には第２コラムカバー２の内面から爪本体２４の先端部まで連続して延びる側部リブ２９，２９が、また幅方向中央部には第２コラムカバー２の内面から爪本体２４の基端部まで連続して延びる中央リブ３０がそれぞれ突設されている。
【００３１】
尚、第１コラムカバー１の内面上端部には、図７に拡大詳示するように、第１及び第２コラムカバー１，２の組付状態で両コラムカバー１，２外面（意匠面）が面一となるように第２コラムカバー２の内面（裏面）に当接する複数の第１位置決め部３３，３３，…が突設されている。また、第２コラムカバー２の内面下端部には、図６に拡大して示すように、両コラムカバー１，２の組付状態で各々の外面（意匠面）が面一となるように第１コラムカバー１の内面（裏面）に当接する第２位置決め部３４，３４が突設されている。また、図８中、３５は第１コラムカバー１の内面に表面（上面）が第１当接面８と面一になるように突設されたリブ、３６は該リブ３５表面ないし第１当接面８にかけて形成されたピン挿通穴、３７は、第２コラムカバー２の上記１対の側壁１ａ，１ｂで上記第１コラムカバー１のピン挿通穴３６に対応する位置に突設された位置決めピンで、両コラムカバー１，２の組付時に第２コラムカバー２の位置決めピン３７が第１コラムカバー１のピン挿通穴３６に嵌挿されて位置決めされる。また、３８は第１コラムカバー１の内面に凹設された凹部、３９は第２コラムカバー２の内面で上記第１コラムカバー１内面の凹部３８に対応する位置に突設された突出片で、両コラムカバー１，２の組付時に第２コラムカバー２の突出片３９の先端部が第１コラムカバー１の凹部３８に嵌合されるようになっている。さらに、図１及び図６中、４０は第１コラムカバー１上端の第１当接面８の内端隅角部を切り欠いてなる切欠傾斜面、図２及び図７中、４１は第２コラムカバー２下端の第２当接面９の内端隅角部を切り欠いてなる切欠傾斜面である。
【００３２】
次に、上記実施形態の作用について説明すると、第１及び第２コラムカバー１，２同士を組み付けるときには、第２コラムカバー２を第１コラムカバー１に対し各々の当接面８，９が当接するように下方に移動させて接近させる。このことで、第２コラムカバー２の各係合部２２と第１コラムカバー１の各被係合部１１との間においては、図３に示すように、第２コラムカバー２における各係合部２２の第２爪２３が第１コラムカバー１における各被係合部１１のフランジ部１２の開口部１４に挿入される。その際、フランジ部１２の開口部１４の辺部１２ａ〜１２ｄにおける開口端（上端）には第１及び第２傾斜面１８，１９が形成されているので、第２爪２３はその先端の爪部２５が各傾斜面１８，１９に当接して案内されながら開口部１４の中央部に挿入される。
【００３３】
第２爪２３が開口部１４へ挿入されると、それに伴い、図４に示す如く、第２爪２３先端の爪部２５が、開口部１４の周辺部のうちの第１コラムカバー１内面（裏面）と対向する辺部１２ｃから下方に傾斜して延びる第１爪１７を押圧する。この第１爪１７は、リブ１３，１３との間のスリット１６，１６により可撓性があるので、上記第２爪２３の押圧により第１爪１７が第２爪２３に対し離反する側（第１コラムカバー１内の中央側）に撓む。
【００３４】
そのとき、上記のように、第２爪２３がフランジ部１２における開口部１４の辺部１２ａ，１２ｂの第１傾斜面１８，１８により該両辺部１２ａ，１２ｂ間の略中央に案内されるので、フランジ部１２の開口部１４に挿入された第２爪２３を第１爪１７に係合するように正確に案内することができる。
【００３５】
この後、第２爪２３が開口部１４内にさらに挿入されると、図５に示す如く、第２爪２３先端の爪部２５が第１爪１７に対し爪部２５の係合面２８を第１爪１７の先端に当接させた状態で係合し、この両爪１７，２３の係合により両コラムカバー１，２同士が組み付けられる。この状態では、両コラムカバー１，２の当接面８，９同士が当接し、両コラムカバー１，２の外面（意匠面）が互いに面一となって組み付けられる。尚、図７に示すように、第１コラムカバー１の内面上端部の第１位置決め部３３が第２コラムカバー２の内面（裏面）に、また図６に示すように、第２コラムカバー２の内面下端部の第２位置決め部３４が第１コラムカバー１の内面（裏面）にそれぞれ当接して、両コラムカバー１，２の各外面（意匠面）が面一となる。さらに、第２コラムカバー２の各位置決めピン３７が第１コラムカバー１のピン挿通穴３６に嵌挿されて位置決めされる。また、第２コラムカバー２の突出片３９の先端部が第１コラムカバー１の凹部３８に嵌合される。
【００３６】
そのとき、両コラムカバー１，２の組付時には、上記の如く、可撓性を有する第１爪１７が第２爪２３に対し離反する側に撓むので、両コラムカバー１，２を各々の当接面８，９が接近するように上下方向に相対移動させるだけの作業で、第１爪１７が撓みながら両爪１７，２３が係合するようになり、両コラムカバー１，２の組付けを容易に行うことができるとともに、爪１７，２３が破損することもない。
【００３７】
また、上記第２爪２３の基端外面に第１コラムカバー１内面に当接する当接部２６が形成されているので、第１及び第２爪１７，２３の係合により両コラムカバー１，２同士が組み付けられた状態では、図５に示すように、上記第２爪２３の当接部２６が第１コラムカバー１の内面に当接して両コラムカバー１，２が各々の外面（意匠面）を面一として位置決めされる。このことにより、外面（意匠面）を面一とする両コラムカバー１，２の位置決めを容易に行うことができる。
【００３８】
一方、この組付状態にある両コラムカバー１，２同士を分離させるときには、上記組付時とは逆の動作を行う。すなわち、両コラムカバー１，２を各々の当接面８，９が離隔するように上下方向に引き離すと、上記組付時と同様に、第１コラムカバー１の第１爪１７が第２コラムカバー２の第２爪２３から離反する側に撓みながら、第２爪２３先端の爪部２５の係合面２８と第１コラムカバー１の第１爪１７先端との係合が外れ（図４参照）、その第２爪２３が第１コラムカバー１におけるフランジ部１２の開口部１４から抜け出て、両コラムカバー１，２が分離される。
【００３９】
そのとき、上記第２爪２３先端の爪部２５における係合面２８が、第２爪２３の先端側に向かって第２コラムカバー２の内面から離れる側に向かうように挿入方向（上下方向）に対し鈍角の角度θで延びており、しかも、上記の如く第１爪１７が第２爪２３に対し離反する側に撓むので、両コラムカバー１，２を各々の当接面８，９が離れるように移動させるだけで、第１爪１７が撓みながら両爪１７，２３の係合が解除される。このことで、両コラムカバー１，２を容易に分離することができ、そのときの爪１７，２３の破損を防止することができる。
【００４０】
したがって、この実施形態においては、外面が意匠面とされた半割形状の両コラムカバー１，２の着脱を、第１及び第２爪１７，２３の破損を招くことなく容易に行うことができる。
【００４１】
また、第１爪１７の可撓性を利用して両爪１７，２３同士を係合させるので、両爪１７，２３の係合度を大に保つことができ、両コラムカバー１，２の着脱を繰り返しても、それらの組付強度を安定して確保できる。
【００４２】
さらに、上記第２爪２３の内面に第２コラムカバー２の内面から連続して延びるリブ２９，３０が突設されているので、第２爪２３の強度をリブ２９，３０によって向上させることができる。
【００４３】
尚、上記実施形態では、第１コラムカバー１の被係合部１１及び第２コラムカバー２の係合部２２をそれぞれ２つずつ設けているが、３つ以上の複数又は１つに増減してもよい。また、上記実施形態では、第１コラムカバー１に２つの被係合部１１，１１を、また第２コラムカバー２に２つの係合部２２，２２をそれぞれ設けているが、各コラムカバー１，２に被係合部１１と係合部２２とを混在して設けることもできる。
【００４４】
さらに、上記実施形態では、分割された半割形状のコラムカバー１，２について説明しているが、本発明は、コラムカバー１，２以外の少なくとも２つの樹脂成形品同士を着脱可能に組み付ける場合にも適用することができる。
【００４５】
【発明の効果】
以上説明したように、請求項１の発明によると、第１及び第２成形品を各外面の意匠面が略面一となるように当接面にて当接させて着脱可能に組み付ける場合に、第１成形品の内面に、その当接面と略面一の略矩形状フランジ部を突設して、その第１成形品内面と略直交する方向に延びる両辺部をそれぞれ第１成形品内面に対しリブで接続し、フランジ部に略矩形状の開口部を形成し、その第１成形品内面と対向する辺部に開口部の幅をフランジ部の表面から離れるに連れて徐々に狭くするように傾斜する延長部を形成して、この延長部にリブとの間のスリットにより可撓性を有する第１爪を設ける一方、第２成形品の内面に、第２当接面を残した状態で第１成形品側に向かって突出しかつ両成形品の組付状態で第１成形品の開口部に挿入されて係合面にて第１爪に係合する第２爪を形成して、この第２爪先端の爪部に、第２爪の先端側に向かって第２成形品の内面から離れる側に向かうように挿入方向に対し鈍角に延びて第１爪に係合する係合面を設け、両成形品の着脱時に第１爪を第２爪に対し離反する側に撓ませるとともに、両成形品の組付状態で外面の意匠面が略面一になるように第１成形品内面に当接する当接部を第２爪の外側に形成したことにより、両成形品を着脱時に各々の当接面が接離するように移動させるだけで、第１爪が第２爪に対し離反する側に撓みながら、両爪が係合し又は両爪の係合が解除され、爪の破損を招くことなく、両成形品の着脱を容易に行うことができるとともに、外面の意匠面を略面一とする両成形品の位置決めを容易に行うことができる。
【００４６】
請求項２の発明によれば、第１成形品の開口部周辺部のうち第１成形品内面と略直交する方向に延びる１対の辺部に、開口部に挿入される第２爪を両辺部間の略中央にガイドする傾斜面を形成したことにより、フランジ部の開口部に挿入された第２爪を第１爪に係合するように正確に案内して、両成形品の組付けのより一層の容易化を図ることができる。
【００４７】
請求項３の発明によると、第２爪の内面に第２成形品の内面から連続して延びるリブを突設したことにより、第２爪の強度の向上を図ることができる。
【００４８】
請求項４の発明によると、両成形品を半割形状のコラムカバーで構成したことにより、外面が意匠面とされた半割形状のコラムカバーを、爪の破損を招くことなく容易に着脱することができる。
【図面の簡単な説明】
【図１】第１コラムカバーの被係合部を拡大して示す斜視図である。
【図２】第２コラムカバーの係合部を内側から見た拡大正面図である。
【図３】第２爪がフランジの開口部に挿入される状態を示す拡大断面図である。
【図４】第２爪により第１爪が撓んだ状態を示す拡大断面図である。
【図５】第２爪が係合面にて第１爪に係合した状態を示す拡大断面図である。
【図６】第２位置決め部と第１コラムカバー内面とが当接して両コラムカバーが位置決めされた状態を示す拡大断面図である。
【図７】第１位置決め部と第２コラムカバー内面とが当接して両コラムカバーが位置決めされた状態を示す拡大断面図である。
【図８】本発明の実施形態に係る第１及び第２コラムカバーを分解して示す斜視図である。
【符号の説明】
１第１コラムカバー（第１成形品）
１ａ〜１ｃ第１コラムカバー側壁
２第２コラムカバー（第２成形品）
２ａ〜２ｃ第２コラムカバー側壁
８第１当接面
９第２当接面
１１被係合部
１２フランジ部
１２ａ〜１２ｄ辺部
１３リブ
１４開口部
１５延長部
１６スリット
１７第１爪
１８第１傾斜面（傾斜面）
２２係合部
２３第２爪
２６当接部
２８係合面
２９，３０リブ[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a fitting structure for a resin molded product for a vehicle composed of at least two molded products such as a half-shaped column cover mounted on a vehicle, and more particularly to a technical field for facilitating attachment / detachment of both molded products. Belonging to.
[0002]
[Prior art]
  Conventionally, as a fitting structure of this type of resin molded product for vehicles, for example, those shown in Japanese Patent Application Laid-Open Nos. 1-100505, 1-250606, and 3-31537 are known. Yes. In JP-A-1-105005 (conventional example 1), an inner surface near one mating surface of a halved lower member (attachment member) or an upper member (attachment member) to be a column cover for a vehicle, While the fixed portion having the fitting groove protrudes, the engaged portion having the engaging groove corresponding to the fitting groove is opposed to the fixed portion on the inner surface near the other mating surface of the lower member or the upper member. A structure is shown in which the lower member and the upper member are integrally assembled by projecting so that the fixed portion and the engaged portion are coupled by the respective insertion grooves and clips inserted into the engagement grooves. ing.
[0003]
  Moreover, in what is shown by Unexamined-Japanese-Patent No. 1-250606 (conventional example 2), the engagement piece which extends in an assembly direction and has flexibility in one of the two members assembled | attached mutually protrudes, On the side surface of the engagement piece, an engagement portion formed of a recess is formed, and the other member is provided with an insertion hole through which the engagement piece is inserted and a locking claw extending from the periphery of the insertion hole. When the members are assembled, the engaging pieces are inserted into the insertion holes, and the engaging claw tip portions are engaged with the engaging portions (concave portions) of the engaging pieces inserted into the insertion holes. It is proposed to assemble. In this case, as the prior art, a box having an insertion hole into which one member is provided with a claw having a locking portion at the distal end and a rib at the proximal end, and the other member can be inserted into the claw. The structure which couple | bonds both members by forming the part and engaging the latching | locking part of the nail | claw penetrated by this penetration hole with the edge part of the penetration hole is shown.
[0004]
  Further, in the one shown in Japanese Utility Model Publication No. 3-31537 (conventional example 3), the inner surface of one of two synthetic resin parts in which a skin material is bonded to the surface of a molded product main body which is a column cover for a vehicle. A rib is formed, and a retaining pin having an engaging portion at the tip is provided on the rib so as to protrude from the mating surface, while a rib is also formed on the inner surface of the other component, and the retaining pin is secured to the rib. A claw portion that engages with the engaging portion of the pin is protruded, and both parts are integrally assembled by engagement between the engaging portion of the retaining pin and the claw portion.
[0005]
[Problems to be solved by the invention]
  However, in the above conventional example 1 (Japanese Patent Laid-Open No. 1-105005), the fixed portion on the inner surface of one member and the engaged portion on the inner surface of the other member are inserted into the respective insertion grooves and engagement grooves. Since both members are integrally assembled by joining with the clip, the clip is required as a separate part, and when the two members are attached or detached, the clip is inserted into the engaging groove and the engaging groove inside or removed from both the members. The work was difficult, and the attachment and detachment of both members was troublesome.
[0006]
  In the conventional examples 2 and 3, the structure in which the engaging portion of one member is engaged with the claw of the other member is adopted, but the claw and the engaging portion are still engaged or engaged. It is difficult to detach and attach and detach both members, and there is a possibility that the claws may be damaged during the attachment and detachment.
[0007]
  In particular, in Conventional Example 2, the engaging portion (concave portion) of the engaging piece and the distal end portion of the locking claw are engaged with each other at a surface extending at right angles to the inserting direction of the engaging piece. Sometimes, simply moving the engagement piece in the anti-insertion direction of the engagement piece does not release the engagement between the engagement piece and the locking claw, and the engagement piece is deliberately parallel to the anti-insertion direction of the engagement piece. When it is moved, the locking claw is damaged. Therefore, it is necessary to move the distal end portion of the locking claw in a direction extending at a right angle to the insertion direction of the engagement piece, and it becomes difficult to remove both members.
[0008]
  Further, since the engaging piece and the insertion hole through which the engaging piece is inserted are formed to protrude to the outside (design surface side) of the assembly member, the forming die for forming becomes large and the manufacturing cost is increased. In addition to the increase, there is a drawback that the appearance of the assembly member is also deteriorated.
[0009]
  Incidentally, in the conventional structure in this conventional example 2, when the claw of one member is inserted into the insertion hole of the other member, the rib at the base end portion of the claw is pressed against the opening end of the insertion hole and scraped. There is.
[0010]
  The present invention has been made in view of such various points, and the object of the present invention is to assemble the two molded products so that the outer surfaces of the two molded products are substantially flush with each other while the end surfaces are in contact with each other by engaging the claws. In this case, it is possible to easily attach and detach both molded products with a small fitting structure without causing damage to the claw for locking by modifying the fitting structure.
[0011]
[Means for Solving the Problems]
  In order to achieve the above object, according to the first aspect of the present invention, the first molded product having the first abutting surface and the second molded product having the second abutting surface substantially face the design surfaces of the outer surfaces. The object is a fitting structure for a resin molded product for a vehicle in which the contact surfaces are brought into contact with each other so as to be detachably assembled.
[0012]
  And the substantially rectangular flange part which has a surface substantially flush with the said 1st contact surface is protrudingly provided in the inner surface of the said 1st molded product, Of 1st molded products among the peripheral sides of this flange part, A pair of ribs that are continuous from the pair of side portions extending in a direction substantially orthogonal to the inner surface to the inner surface of the first molded product are formed. In addition, a substantially rectangular opening is formed in the flange portion, and the width of the opening portion is separated from the surface of the flange portion in the side portion of the peripheral portion of the opening portion that faces the inner surface of the first molded product. An extension extending obliquely and gradually narrowing is formed, and a slit is formed between the extension and the pair of ribs, and the extension has flexibility by the slit. A first nail is provided.
[0013]
  On the other hand, with the second contact surface remaining on the inner surface of the second molded product, the second molded product projects toward the first molded product with the second contact surface as a base end, and the first and second molded products Inserted into the opening in the assembled state.FirstA second claw that engages with one claw is formed.A claw portion is provided at the tip, and the claw portionIs directed toward the side away from the inner surface of the second molded product toward the tip side of the second clawSecond nailIt extends at an obtuse angle with respect to the insertion directionAnd an engagement surface that engages with the first claw.ing. And when the first and second molded products are attached and detached,The first nail becomes the second nailIt is comprised so that it may bend to the side which separates.Further, a contact portion that contacts the inner surface of the first molded product is formed on the outer side of the second claw so that the design surface of the outer surface is substantially flush with the assembled state of the first and second molded products. Yes.
[0014]
  According to said structure, when assembling the 1st and 2nd molded product, when both molded products are approached so that each contact surface may contact, the 2nd nail of the 2nd molded product in the 1st molded product The second claw inserted into the opening of the flange portionAgainst the first nail of the first molded productThe second nail while bending to the opposite sideTip nailThe engaging surface engages with the first claw, and the two molded products are assembled together by the engagement of both the claws. In this state, the contact surfaces of both molded products are in contact with each other, and the design surfaces of the outer surfaces of both molded products are assembled so as to be substantially flush with each other.
[0015]
  On the other hand, when the two molded products in the assembled state are separated from each other, the two molded products are pulled apart so that the respective contact surfaces are separated from each other. Then, the second nail of the second molded product, as in the above assemblyAgainstFirst of the first molded productNail separationThe second nail while bending to the sideTip nailThe engagement surface of the first molded product is disengaged from the first claw of the first molded product, the second claw of the second molded product comes out of the opening of the flange portion of the first molded product, and both molded products are separated. The
[0016]
  At that time, the second nailTip nailThe engaging surface extends at an obtuse angle with respect to the insertion direction so as to be directed away from the inner surface of the second molded product toward the distal end side of the second claw, and when the molded product is attached or detached.The first nail is the second nailBecause it bends to the side that separates, by simply moving the two molded parts relative to each other so that the respective contact surfaces come in contact with and separate from each other,The first nail is the second nailThe two claws are engaged with each other or released from each other while being bent toward the side away from each other. Therefore, both molded products can be easily attached and detached, and the claw is not damaged at the time of the engagement.
[0017]
  Also,A contact portion that contacts the inner surface of the first molded product is formed outside the second claw so that the design surface of the outer surface is substantially flush with the assembled state of the first and second molded products.BecauseIn a state where both molded products are assembled by the engagement of the first and second claws, the abutment portion on the outer side of the second claw contacts the inner surface of the first molded product, and both molded products are designed on the outer surfaces. Both molded products can be easily positioned so that the surfaces are substantially flush and the outer design surface is substantially flush, so that both molded products can be assembled with good appearance.
[0018]
  Claim2In the invention, when the first and second molded products are assembled to a pair of sides extending in a direction substantially orthogonal to the inner surface of the first molded product among the peripheral portions of the opening of the flange portion of the first molded product. It is set as the structure in which the inclined surface which guides the 2nd nail | claw inserted in the said opening part to the approximate center between said 1 pair of side parts is formed. In this way, when the second claw of the second molded product is inserted into the opening of the flange portion of the first molded product when the two molded products are assembled, the second claw is formed on the pair of side portions of the opening. Since it is guided to the approximate center between the side portions by the inclined surface, the second claw can be accurately guided so as to engage with the first claw, and assembly of both molded products can be performed more easily.
[0019]
  Claim3In this invention, it is set as the structure by which the rib extended continuously from the inner surface of a 2nd molded article is protrudingly provided in the inner surface of the 2nd nail | claw. Thereby, the strength of the second nail can be improved by the rib.
[0020]
  Claim4In the invention, the first and second molded articles constitute a half-shaped column cover that is assembled around the steering shaft of the vehicle so as to cover the steering shaft. That is, the half-shaped column cover whose outer surface is a design surface can be easily attached and detached without damaging the claws.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
  FIG. 8 shows the overall configuration of the embodiment of the present invention, wherein 1 is a first resin-made column cover made of, for example, polypropylene or the like as a first molded product, and 2 is a similar second resin-made product as a second molded product. The column covers 1 and 2 have a half-divided shape obtained by dividing a substantially rectangular bottomed box into two parts, and the steering shaft is arranged around a steering shaft (not shown) of the vehicle. It is assembled so as to cover. In the following description, for ease of explanation, the first column cover 1 is disposed on the lower side and the second column cover 2 is disposed on the upper side as shown in FIG. However, the arrangement relationship between the column covers 1 and 2 is not limited to this.
[0022]
  That is, the first column cover 1 shown on the lower side in FIG. 8 is a half box-like shape in which three of the four peripheries are surrounded by side walls 1a to 1c, and a pair of opposite side walls 1a, Rectangular recesses 3 and 3 are formed in both sides of 1b, and semicircular recesses 4 are formed in a cutout shape on the remaining side wall 1c sandwiched between both side walls 1a and 1b. On the other hand, the second column cover 2 shown on the upper side in FIG. 8 is also a half box-like one in which three sides of the four peripheries are surrounded by the side walls 2a to 2c, like the first column cover 1. The opposite side walls 2a and 2b have rectangular recesses 5 and 5 corresponding to the rectangular recesses 3 and 3 of the first column cover 1, and the side walls 2c sandwiched between the side walls 2a and 2b are semi-finished. Circular recesses 6 are formed in a cutout shape corresponding to the semicircular recesses 4 of the first column cover 1, and although not shown, both column covers 1 and 2 are assembled together. Circular shaft insertion holes through which the steering shaft is inserted by the corresponding semicircular recesses 4, 6 of the covers 1, 2, and direction indication levers and the like by the corresponding rectangular recesses 3, 5 of the column covers 1, 2 Operation lever such as wiper operation lever (not shown) Rectangular lever insertion hole for inserting the are formed.
[0023]
  The upper end surface (the end surface of each of the side walls 1a to 1c) of the first column cover 1 facing the second column cover 2 is formed on the first contact surface 8 and the first column cover 1 of the second column cover 2 with the first column cover 1. A lower end surface (an end surface of each of the side walls 2a to 2c) as an opposing surface is formed on the second contact surface 9, respectively. Further, the outer surfaces of the column covers 1 and 2 are formed as design surfaces, and the two column covers 1 and 2 contact the contact surfaces 8 and 9 so that the outer surfaces (design surfaces) are flush with each other. It can be attached and detachably assembled.
[0024]
  The fitting structure of the two column covers 1 and 2 will be described. In a pair of opposing side walls 1a and 1b of the first column cover 1, the open end of the side wall 1b shown on the left side in FIG. Engaged portions 11, 11 are formed on the inner surfaces (rear surfaces) of both the portion near the portion and the portion near the opposite side of the side wall 1 a shown on the right side. Both the engaged portions 11 and 11 have the same structure, and as shown in enlarged detail in FIGS. 1 and 3 to 5, a substantially rectangular flange portion protruding from the inner surface of the first column cover 1. 12, and the surface (upper surface) of the flange portion 12 is flush with the first contact surface 8. Further, a lower side from a pair of side portions 12a and 12b extending in a direction substantially orthogonal to the inner surface of the first column cover 1 among the peripheral side portions 12a to 12d of the flange portion 12 (the bottom side of the first column cover 1). A pair of ribs 13, 13 extending in parallel with each other are integrally protruded, and each rib 13 is formed integrally with the inner surface (back surface) of the first column cover 1.
[0025]
  The flange portion 12 has a substantially rectangular opening 14 formed therein. An extension 15 extending downward is integrally formed on a side 12c of the periphery of the opening 14 (peripheral sides 12a to 12d of the flange 12) facing the inner surface (back surface) of the first column cover 1. The extension portion 15 gradually narrows the width of the opening portion 14 (the opening width between the side portion 12c and the inner surface of the first column cover 1) as the distance from the surface of the flange portion 12 increases. It inclines in the direction which goes to the inner surface (back surface) of the 1st column cover 1 toward the downward direction.
[0026]
  In addition, slits 16 and 16 are formed on both sides of the extension portion 15 between the pair of ribs 13 and 13, respectively. The extension portion 15 is flexible by the slits 16 and 16. One claw 17 is formed.
[0027]
  Further, at the opening ends (upper ends) of the pair of side portions 12a and 12b extending in the direction substantially orthogonal to the inner surface (back surface) of the first column cover 1 among the peripheral portions 12a to 12d of the opening portion 14 in the flange portion 12. The first inclined surfaces 18 and 18 for guiding a second claw 23 to be described later inserted into the opening 14 when the both column covers 1 and 2 are assembled to the approximate center between the pair of side portions 12a and 12b. Is formed. Note that the opening ends (upper ends) of the pair of side portions 12c and 12d extending in the direction parallel to the inner surface (back surface) of the first column cover 1 in the peripheral portion of the opening portion 14 Second inclined surfaces 19 and 19 are formed to facilitate the insertion of the second claw 23 during assembly.
[0028]
  On the other hand, in the pair of opposing side walls 2a and 2b of the second column cover 2, a portion closer to the open end of the side wall 2b shown on the left side in FIG. 8 (the part facing the side wall 2c) and the side wall 2a shown on the right side. Engagement portions 22 and 22 are formed on the inner surfaces (rear surfaces) of the first column cover 1 on the inner surfaces (rear surfaces) of the first column cover 1 and the opposite end portions of the first column cover 1, respectively. Both engaging portions 22 and 22 have the same structure, and project from the inner surface of the second column cover 2 toward the first column cover 1 side (lower side) as shown in an enlarged view in FIGS. The second claw 23 is provided with the second abutting surface 9 as a base end while leaving the second abutting surface 9 at the lower end of the second column cover 2. Projects toward the side. The second claw 23 is inserted into the opening portion 14 of the flange portion 12 of the first column cover 1 when the two column covers 1 and 2 are assembled, and the inner surface of the second column cover 2 ( A claw body 24 extending obliquely away from the back surface and a claw part 25 continuous with the tip (lower end) of the claw body 24, and the base end outer surface of the claw body 24 has the base A contact portion 26 is formed in which the end outer surface is partially cut out in the vertical direction, that is, in a direction parallel to the inner surface of the second column cover 2, and the upper end intersects the inner end of the second contact surface 9. As shown in FIG. 5, when the second claw 23 is inserted into the opening 14 of the flange portion 12 of the first column cover 1 in the assembled state of the column covers 1 and 2, the outer surfaces of the column covers 1 and 2. The contact portion 26 is the first column cover so that the (design surface) is flush. Abuts against the contact form on the inner surface of -1 in the opening 14.
[0029]
  As shown in FIGS. 3 to 5, the claw portion 25 at the tip of the second claw 23 has a guide surface 27 that is inclined toward the side closer to the inner surface of the second column cover 2 toward the tip side of the second claw 23. The guide surface 27 is continuous with the base end side (upper side) and is directed toward the tip end side of the second claw 23 toward the side away from the inner surface of the second column cover 2 (center side in the second column cover 2). Engagement surface 28 extending at an obtuse angle θ (see FIGS. 3 to 5) with respect to the insertion direction (vertical direction), and in the assembled state of the first and second column covers 1 and 2, The two claws 23 are inserted into the opening 14 of the first column cover 1 and engage with the first claws 17 at the engagement surface 28. When the first and second column covers 1 and 2 are attached and detached, as shown in FIG. 4, the first claw 17 is bent toward the side away from the second claw 23 (center side in the first column cover 1). It is supposed to be.
[0030]
  In addition, side ribs 29 and 29 extending continuously from the inner surface of the second column cover 2 to the tip of the claw body 24 are provided at both ends in the width direction on the inner surface of the second claw 23, and also in the center portion in the width direction. Central ribs 30 that extend continuously from the inner surface of the second column cover 2 to the base end portion of the claw body 24 are respectively provided.
[0031]
  As shown in an enlarged detail in FIG. 7, both the column cover 1 and the outer surface (design surface) of the first and second column covers 1 and 2 are attached to the upper end of the inner surface of the first column cover 1. Are projectingly provided so as to be in contact with the inner surface (back surface) of the second column cover 2. Further, at the lower end of the inner surface of the second column cover 2, as shown in an enlarged view in FIG. 6, the outer surfaces (design surfaces) of the two column covers 1 and 2 are flush with each other in the assembled state. 2nd positioning part 34 and 34 which contact | abuts to the inner surface (back surface) of 1 column cover 1 is protrudingly provided. In FIG. 8, 35 is a rib projecting on the inner surface of the first column cover 1 so that the surface (upper surface) is flush with the first contact surface 8, and 36 is the surface of the rib 35 or the first contact. A pin insertion hole 37 formed over the contact surface 8 is a projection provided at a position corresponding to the pin insertion hole 36 of the first column cover 1 on the pair of side walls 1a, 1b of the second column cover 2. With the pins, when the two column covers 1 and 2 are assembled, the positioning pins 37 of the second column cover 2 are inserted into the pin insertion holes 36 of the first column cover 1 and positioned. Reference numeral 38 denotes a recess formed in the inner surface of the first column cover 1, and 39 denotes an inner surface of the second column cover 2, which is a protruding piece provided in a position corresponding to the recess 38 in the inner surface of the first column cover 1. When the two column covers 1 and 2 are assembled, the leading end of the protruding piece 39 of the second column cover 2 is fitted into the recess 38 of the first column cover 1. Further, in FIGS. 1 and 6, reference numeral 40 denotes a notched inclined surface formed by notching an inner end corner of the first contact surface 8 at the upper end of the first column cover 1, and reference numerals 41 and 2 in FIG. 2 and FIG. This is a notched inclined surface formed by notching the inner end corner portion of the second contact surface 9 at the lower end of the column cover 2.
[0032]
  Next, the operation of the above embodiment will be described. When the first and second column covers 1 and 2 are assembled, the second column cover 2 is brought into contact with the first column cover 1 so that the respective contact surfaces 8 and 9 are in contact with each other. Move it down so that it touches. As a result, between each engagement portion 22 of the second column cover 2 and each engaged portion 11 of the first column cover 1, as shown in FIG. 3, each engagement in the second column cover 2. The second claw 23 of the portion 22 is inserted into the opening 14 of the flange portion 12 of each engaged portion 11 in the first column cover 1. In that case, since the 1st and 2nd inclined surfaces 18 and 19 are formed in the opening end (upper end) in edge part 12a-12d of the opening part 14 of the flange part 12, the 2nd nail | claw 23 is a nail | claw of the front-end | tip. The portion 25 is inserted into the central portion of the opening 14 while being guided by contact with the inclined surfaces 18 and 19.
[0033]
  When the second claw 23 is inserted into the opening portion 14, the claw portion 25 at the tip of the second claw 23 is attached to the inner surface of the first column cover 1 in the peripheral portion of the opening portion 14 as shown in FIG. The first claw 17 extending downwardly from the side portion 12c facing the back surface is pressed. Since the first claw 17 is flexible due to the slits 16, 16 between the ribs 13, 13, the first claw 17 is separated from the second claw 23 by the pressing of the second claw 23 ( The first column cover 1 is bent toward the center.
[0034]
  At that time, as described above, the second claw 23 is guided to the approximate center between the side portions 12a and 12b by the first inclined surfaces 18 and 18 of the side portions 12a and 12b of the opening portion 14 in the flange portion 12. The second claw 23 inserted into the opening 14 of the flange portion 12 can be accurately guided so as to engage with the first claw 17.
[0035]
  Thereafter, when the second claw 23 is further inserted into the opening 14, the claw portion 25 at the tip of the second claw 23 moves the engagement surface 28 of the claw portion 25 against the first claw 17 as shown in FIG. 5. The two column covers 1 and 2 are assembled together by engaging the both claws 17 and 23 with the two claws 17 and 23 being engaged with each other. In this state, the contact surfaces 8 and 9 of the column covers 1 and 2 are in contact with each other, and the outer surfaces (design surfaces) of the column covers 1 and 2 are assembled to be flush with each other. As shown in FIG. 7, the first positioning portion 33 at the upper end of the inner surface of the first column cover 1 is on the inner surface (rear surface) of the second column cover 2, and as shown in FIG. The second positioning portion 34 at the lower end of the inner surface is in contact with the inner surface (back surface) of the first column cover 1 so that the outer surfaces (design surfaces) of the column covers 1 and 2 are flush with each other. Further, each positioning pin 37 of the second column cover 2 is inserted into the pin insertion hole 36 of the first column cover 1 and positioned. Further, the tip end portion of the protruding piece 39 of the second column cover 2 is fitted into the concave portion 38 of the first column cover 1.
[0036]
  At that time, when the column covers 1 and 2 are assembled, the first claw 17 having flexibility bends away from the second claw 23 as described above. The two claws 17 and 23 are engaged with each other while the first pawls 17 are bent by only the relative movement in the vertical direction so that the abutment surfaces 8 and 9 approach each other. Assembling can be performed easily, and the claws 17 and 23 are not damaged.
[0037]
  Further, since the contact portion 26 that contacts the inner surface of the first column cover 1 is formed on the outer surface of the base end of the second claw 23, both the column covers 1, 2 are engaged by the engagement of the first and second claws 17, 23. In the state in which the two are assembled, as shown in FIG. 5, the contact portion 26 of the second claw 23 contacts the inner surface of the first column cover 1 so that both the column covers 1 and 2 have their outer surfaces (designs). Surface). Thus, the column covers 1 and 2 can be easily positioned with the outer surface (design surface) being flush with each other.
[0038]
  On the other hand, when the two column covers 1 and 2 in the assembled state are separated from each other, an operation opposite to that at the time of assembling is performed. That is, when the two column covers 1 and 2 are pulled apart in the vertical direction so that the contact surfaces 8 and 9 are separated from each other, the first pawl 17 of the first column cover 1 is moved to the second column as in the above assembly. While being bent away from the second claw 23 of the cover 2, the engagement between the engagement surface 28 of the claw portion 25 at the tip of the second claw 23 and the tip of the first claw 17 of the first column cover 1 is disengaged (FIG. 4). The second claw 23 comes out of the opening 14 of the flange portion 12 in the first column cover 1, and the column covers 1 and 2 are separated.
[0039]
  At that time, the insertion surface (vertical direction) is such that the engagement surface 28 of the claw portion 25 at the tip of the second claw 23 is directed toward the tip side of the second claw 23 and away from the inner surface of the second column cover 2. The first claw 17 bends away from the second claw 23 as described above, and the column covers 1 and 2 are attached to the contact surfaces 8 and 9 respectively. The first claws 17 are bent and the claws 17 and 23 are disengaged simply by moving them so that they are separated from each other. As a result, both column covers 1 and 2 can be easily separated, and damage to the claws 17 and 23 at that time can be prevented.
[0040]
  Therefore, in this embodiment, it is possible to easily attach and detach the halved column covers 1 and 2 whose outer surfaces are designed surfaces without causing damage to the first and second claws 17 and 23. .
[0041]
  Further, since both the claws 17 and 23 are engaged with each other by utilizing the flexibility of the first claws 17, the degree of engagement between the claws 17 and 23 can be kept large, and the column covers 1 and 2 can be attached and detached. Even if it repeats, those assembly | attachment strength can be ensured stably.
[0042]
  Furthermore, since the ribs 29 and 30 extending continuously from the inner surface of the second column cover 2 are projected on the inner surface of the second claw 23, the strength of the second claw 23 can be improved by the ribs 29 and 30. it can.
[0043]
  In the above embodiment, the firstTwo engaged portions 11 of the one column cover 1 and two engaging portions 22 of the second column cover 2 are provided, but may be increased or decreased to three or more or one. In the above embodiment, the first column cover 1 is provided with the two engaged portions 11, 11 and the second column cover 2 is provided with the two engaging portions 22, 22. , 2 can be provided with the engaged portion 11 and the engaging portion 22 in a mixed manner.
[0044]
  Furthermore, in the said embodiment, although divided | segmented half-shaped column covers 1 and 2 are demonstrated, this invention is a case where at least 2 resin molded products other than column covers 1 and 2 are assembled | attached detachably It can also be applied to.
[0045]
【The invention's effect】
  As described above, according to the first aspect of the present invention, when the first and second molded products are detachably assembled by bringing them into contact with each other so that the design surfaces of the outer surfaces are substantially flush with each other. A substantially rectangular flange portion that is substantially flush with the abutting surface is provided on the inner surface of the first molded product, and both side portions that extend in a direction substantially orthogonal to the inner surface of the first molded product are respectively provided in the first molded product. Connecting to the inner surface with ribs, forming a substantially rectangular opening in the flange, and gradually narrowing the width of the opening on the side facing the inner surface of the first molded product as the distance from the surface of the flange increases An extension portion that is inclined so as to be formed, and a flexible first claw is provided on the extension portion by a slit between the ribs, while a second contact surface is left on the inner surface of the second molded product. Projecting toward the first molded product side and inserted into the opening of the first molded product in the assembled state of both molded products. Forming a second pawl for engaging the first pawl in engagement surface Te, the second pawlOn the nail at the tip, Extending at an obtuse angle with respect to the insertion direction toward the side away from the inner surface of the second molded product toward the distal end side of the second clawAn engagement surface that engages with the first claw is provided.When attaching and removing both molded productsFirst nail to second nailDeflection to the opposite sideIn addition, a contact portion that contacts the inner surface of the first molded product is formed on the outer side of the second claw so that the design surface of the outer surface is substantially flush with the assembled state of both molded products.By simply moving both molded products so that the respective contact surfaces come in contact with and separated from each other,The first nail is the second nailThe two claws are engaged or the claws are disengaged while bending toward the side away from,nailBoth parts can be easily attached and detached without incurring damageAt the same time, it is possible to easily position both molded products whose outer design surfaces are substantially flush with each other..
[0046]
  Claim2According to the invention, the second claw inserted into the opening is inserted into the pair of sides extending in the direction substantially orthogonal to the inner surface of the first molded product in the periphery of the opening of the first molded product. By forming the inclined surface to be guided substantially at the center, the second claw inserted into the opening of the flange portion is accurately guided so as to be engaged with the first claw, thereby further assembling both molded products. Can be facilitated.
[0047]
  Claim3According to this invention, the rib extending continuously from the inner surface of the second molded product is provided on the inner surface of the second claw, whereby the strength of the second claw can be improved.
[0048]
  Claim4According to the invention, by forming both molded products with a half-shaped column cover, the half-shaped column cover whose outer surface is a design surface can be easily attached and detached without causing damage to the claws. .
[Brief description of the drawings]
FIG. 1 is an enlarged perspective view showing an engaged portion of a first column cover.
FIG. 2 is an enlarged front view of an engaging portion of a second column cover as viewed from the inside.
FIG. 3 is an enlarged cross-sectional view showing a state in which a second claw is inserted into an opening of a flange.
FIG. 4 is an enlarged cross-sectional view showing a state in which the first claw is bent by the second claw.
FIG. 5 is an enlarged cross-sectional view showing a state in which the second claw is engaged with the first claw at the engaging surface.
FIG. 6 is an enlarged cross-sectional view showing a state in which the second positioning portion and the inner surface of the first column cover are in contact with each other and the column covers are positioned.
FIG. 7 is an enlarged cross-sectional view showing a state in which the first positioning portion and the inner surface of the second column cover are in contact with each other and the column covers are positioned.
FIG. 8 is an exploded perspective view showing first and second column covers according to the embodiment of the present invention.
[Explanation of symbols]
  1 First column cover (first molded product)
  1a-1c 1st column cover side wall
  2 Second column cover (second molded product)
  2a to 2c Second column cover side wall
  8 First contact surface
  9 Second contact surface
  11 engaged parts
  12 Flange
  12a-12d side
  13 Ribs
  14 opening
  15 Extension
  16 slits
  17 First nail
  18 First inclined surface (inclined surface)
  22 Engagement part
  23 Second nail
  26 Contact part
  28 Engagement surface
  29, 30 ribs

Claims

The first molded product having the first contact surface and the second molded product having the second contact surface are brought into contact with each other so that the design surfaces of the outer surfaces are substantially flush with each other. It is a fitting structure of a resin molded product for a vehicle assembled in a detachable manner,
A substantially rectangular flange portion having a surface substantially flush with the first contact surface protrudes from the inner surface of the first molded product,
A pair of ribs that are continuous from the pair of sides extending in the direction substantially orthogonal to the inner surface of the first molded product among the peripheral sides of the flange portion to the inner surface of the first molded product are formed.
A substantially rectangular opening is formed in the flange,
An extension portion that is inclined and extended so as to gradually narrow the width of the opening portion away from the surface of the flange portion is formed on a side portion of the peripheral portion of the opening portion that faces the inner surface of the first molded product. ,
While a slit is formed between the extension and the pair of ribs, and the extension has a first claw having flexibility,
Assembling the first and second molded products while projecting toward the first molded product side with the second contact surface as a base end with the second contact surface left on the inner surface of the second molded product condition second pawl to engage the first pawl is inserted into the opening is formed by,
A claw portion is provided at the tip of the second claw, and the claw portion is directed to the second claw insertion direction so as to go to the side away from the inner surface of the second molded product toward the tip side of the second claw. Having an engagement surface extending at an obtuse angle and engaging with the first claw ,
The first pawl is configured to deflect to the side away against the second pawl during attachment and detachment of the first and second moldings,
A contact portion that contacts the inner surface of the first molded product is formed on the outer side of the second claw so that the design surface of the outer surface is substantially flush with the assembled state of the first and second molded products . A resin resin molded product fitting structure characterized by the above.

In the fitting structure of the resin molded product for vehicles according to claim 1,
A pair of side portions extending in a direction substantially orthogonal to the inner surface of the first molded product among the peripheral portions of the opening in the flange portion of the first molded product, and the opening when the first and second molded products are assembled. A fitting structure for a resin molded product for a vehicle, characterized in that an inclined surface is formed for guiding the second claw to be inserted to a substantially center between the pair of side portions.

In the fitting structure of the resin molded product for vehicles according to claim 1 or 2 ,
A fitting structure for a resin molded product for a vehicle, wherein a rib extending continuously from the inner surface of the second molded product is provided on the inner surface of the second claw.

In the fitting structure of the resin molded product for vehicles according to any one of claims 1 to 3 ,
The first and second molded articles constitute a half-shaped column cover assembled around the steering shaft of the vehicle so as to cover the steering shaft. .