JP4266457B2

JP4266457B2 - Roof molding and roof molding terminal part processing method

Info

Publication number: JP4266457B2
Application number: JP27302499A
Authority: JP
Inventors: 英靖藤松
Original assignee: Inoac Corp
Current assignee: Inoac Corp
Priority date: 1999-09-27
Filing date: 1999-09-27
Publication date: 2009-05-20
Anticipated expiration: 2019-09-27
Also published as: JP2001088626A

Description

【０００１】
【発明の属する技術分野】
この発明は、自動車用ルーフモールの端末部加工方法に関する。
【０００２】
【従来の技術】
図６に示すように、自動車６０のルーフ６１にはルーフモール７０が取り付けられることが多い。前記ルーフモール７０は、そのルーフモール７０を外したルーフ６１の一部を示す図７からわかるように、ルーフパネル６２とアウターサイドパネル６３が一体に接合される部分の接合線Ｊを隠すため、前記両パネル６２，６３の接合部に形成された溝６４に嵌着されるものである。
【０００３】
前記ルーフモール７０は、図８から理解されるように、脚部７１と該脚部７１の上端に設けられて意匠面となる装飾部７５とからなり、前記接合部の溝６４に前記脚部７１を挿入し装飾部７５で当該溝６４を塞ぐように装着される。また、前記脚部７１にはルーフモール７０を接合部の溝６４に正しく装着保持し、また線膨張を少なくするために、長手方向に沿って金属心材７３が埋設されることが多い。符号７６は、前記溝６４への固定を確実にするため、脚部７１の下部両側面に長手方向に沿って形成されたリップ（ひれ片）である。
【０００４】
ところで、前記ルーフ６１の接合部の溝６４は、その車両前後方向両端を溝６４の中央と同じ深さでプレス成形するとアッパーコーナー部６５に破れを生じるため、溝６４の端に向かって徐々に浅くされている。そのため、前記ルーフモール７０として、長尺押出成形品からなるモール素材７０ａを単に所定長に切断したものを用いたのでは、脚部７１の下端がボディに干渉してルーフモール７０を正しく装着できなくなる。さらに、モール素材７０ａの切断面は美観的に劣るため、該切断部をそのままルーフモール７０の端末部としたのでは、美観が低下する問題もある。したがって、所定長に切断したモール素材７０ａの切断面に、前記溝６４の端部の深さに合わせた端末部（図示せず）を射出成形することが提案されている。
【０００５】
しかし、前記端末部を射出成形したものにあっては、ルーフモールの端末部の表面に、モール素材と端末部との間で、射出成形による継ぎ目ラインが発生し、ルーフモールの外観を損なう問題があった。さらに、前記押出成形品のモール素材からなる本体部分と射出成形された端末部とは樹脂の収縮率等が異なるため、その熱収縮量の違いや劣化等によって、前記継ぎ目ラインの部分で亀裂が生じ、場合によっては端末部とモール素材とが離れることもあった。
【０００６】
そこで、前記射出成形による端末部加工の問題を解決する方法として、熱プレスによる端末部加工方法が提案されている（特開平１０−１９４０５６）。この加工方法は、図９に示すように、所定長に切断したモール素材７０ａの端末部７０ｂに対して、少なくとも装飾部７５を残して端末部７０ｂ裏側を所要量除去し、次に前記端末部７０ｂを熱プレスして、図１０に示すような所望形状に賦形したルーフモール７０の端末部７０ｃを得るものである。このようにして形成された端末部７０ｃの先端側７０ｄは、裏側へ略直角に折り曲げられた形状からなり、端末部７０ｃの美観をさらに向上させている。
【０００７】
また、図示するルーフモール７０のように、レインガータ７７を装飾部７５表面に有するものがある。このレインガータ７７は、ルーフ６１に降った雨水を車両の前後方向へ導いて車両の乗降用ドア付近へ垂れるのを防止するものであり、従来では、前記装飾部７５の表面にルーフ中央側へ向けてレインガータ用リップ７８をツノ状に突出形成し、該レインガータ用リップ７８と装飾部７５表面間でレインガータ７７を構成していた。
【０００８】
しかし、前記レインガータ７７を有するモール素材７０ａの端末部７０ｂに対して前記熱プレス加工を施すと、モール素材の端末部７０ｂ先端側では、装飾部７５とレインガータ用リップ７８の両方が重なって折り曲げられるため、得られるルーフモール７０の端末部７０ｃには次のような不具合を生じる。
【０００９】
まず第１に、レインガータ用リップ７８の重なりによる線や凹凸７９が、加工後の端末部先端側７０ｄに発生し、美観が損なわれるようになる。また、前記ルーフの溝６４の端部と交差して設けられるルーフのウインドシールドモール用嵌着溝におけるウインドシールドモールの良好な嵌着が、前記凹凸７９により妨げられるおそれもある。
【００１０】
第２に、前記端末部先端側７０ｄは、レインガータ用リップ７８が装飾部７５に重なって樹脂厚が大になった状態で折り曲げられるため、熱プレスによる賦形時の圧縮量が大になり、賦形後の残留応力によって変形を生じるおそれが大きい。しかも、前記端末部先端側７０ｄは、むやみに厚くすることができず、前記熱プレス時の圧縮量を減らすこともできなかった。
【００１１】
第３に、熱プレス装置の都合等から、熱プレス時には、通常、前記モール素材７０ａを裏側が上、装飾部７５が下向きとなるようにしてプレス型に配置し、モール素材７０ａの上方からモール素材裏側を加熱することが多いため、熱源とは反対側にあって、しかも装飾部７５の表面から突出しているレインガータ用リップ７８の先端まで充分加熱しにくく、加熱不足による賦形不良を生じ易い。
【００１２】
【発明が解決しようとする課題】
この発明は前記の点に鑑みなされたもので、端末部の折り曲げ先端側にレインガータに起因する線や凹凸が無く、外観が美麗であって、しかも賦形後の変形を生じ難いルーフモール及びその端末部加工方法を提供するものである。
【００１３】
【課題を解決するための手段】
請求項１の発明は、表面にレインガータが形成された装飾部を脚部の上端に有する樹脂製モール素材が、端末部の裏側で所要量除去され、熱プレスによって前記端末部でレインガータの溝が閉じられるとともに端末部先端側で裏側へ折り曲げ賦形されることによって本体部と端末部が継ぎ目無く一連とされているルーフモールにおいて、前記モール素材は、前記装飾部一側表面に横断面略「く」の字状の切り欠き形状からなるレインガータを備え、該レインガータの溝内底部より上側が装飾部上段、前記溝内底部より下側が装飾部下段とされ、前記装飾部上段の基部に相当する装飾部表面に段差形状が存在しないものからなり、前記端末部先端側については前記脚部と、前記装飾部のレインガータ側におけるレインガータの溝内底部より下側の前記装飾部下段とが除去され、前記端末部における前記レインガータが前記本体部側から端末部先端側へ向けて徐々に閉じ、前記レインガータの先端側でレインガータが消失するように、前記レインガータ上側の装飾部上段を含む残存装飾部が裏側へ折り曲げ賦形されて、前記先端側の裏面が前記装飾部下段及び前記脚部の切断端面と圧着されていることを特徴とするルーフモールに係る。
【００１４】
請求項２の発明は、表面にレインガータが形成された装飾部を脚部の上端に有する樹脂製モール素材の端末部に対し、前記端末部裏側を所要量除去し、前記端末部を熱プレスしてレインガータの溝を端末部で閉じるとともに前記端末部先端側を裏側へ折り曲げて該折り曲げ形状に賦形する加工方法において、前記モール素材として、前記装飾部一側表面に横断面略「く」の字状の切り欠き形状からなるレインガータを備え、該レインガータの溝内底部より上側が装飾部上段、前記溝内底部より下側が装飾部下段とされ、前記装飾部上段の基部に相当する装飾部表面に段差形状が存在しないものを用い、前記端末部（１２ａ）裏側の除去に際し、該端末部先端側については、前記脚部と、前記装飾部のレインガータ側におけるレインガータの溝内底部より下側の前記装飾部下段とを除去し、前記端末部を熱プレスして端末部先端側で折り曲げ賦形する際に、前記モール素材の端末部における前記レインガータが端末部先端側へ向けて徐々に閉じ、前記レインガータの先端側でレインガータが消失するように、前記レインガータ上側の前記装飾部上段を含む残存装飾部を裏側へ折り曲げ、前記先端側の裏面を前記装飾部下段及び前記脚部の切断端面と圧着させることを特徴とするルーフモールの端末部加工方法に係る。
【００１５】
また、請求項３の発明は、請求項２において、装飾部下段よりも装飾部上段をレインガータの溝内底部からの突出長さについては短いものとし、端末部の熱プレスにより前記装飾部上段を含む残存装飾部を拡幅賦形することを特徴とする。
【００１６】
【発明の実施の形態】
以下添付の図面に従ってこの発明を詳細に説明する。図１はこの発明の一実施例に係る自動車用ルーフモールの端末部付近を示す斜視図、図２は図１のルーフモールの裏側を示す斜視図、図３はモール素材の一部を示す斜視図、図４はモール素材の端末部裏側除去状態を示す斜視図、図５は熱プレス時を示す断面図である。
【００１７】
まず、請求項１の発明に係るルーフモールの一例について説明し、次にそのルーフモールの端末部加工方法の一例について説明する。
【００１８】
図１及び図２に示す自動車用ルーフモール１０は、図３に示す所定断面形状からなる押出成形品の熱可塑性樹脂製モール素材１０ａから、後述の端末部加工方法によって、図４に示すように、モール素材１０ａの端末部１２ａ裏側が除去され、次いで熱プレス加工されたもので、図７に示したルーフ６１の溝６４の深い部分に装着される本体部１１と、溝６４の浅い端部に装着される端末部１２とが継ぎ目ライン無く一連となっている。
【００１９】
本体部１１は、モール素材１０ａと同一断面形状からなり、脚部１３と該脚部１３の上端に装飾部１５が一体に形成されている。
この本体部における脚部１３は、前記ルーフ６１の溝６４に挿入されて該ルーフモール１０を溝６４に嵌着するためのもので、金属芯材１４が埋設され、また脚部１３の下側両側には、その脚部１３を前記溝６４内に挿入した際に溝６４の側壁に圧接してルーフモール１０を安定的に保持するために、軟質樹脂からなるリップ１７が一体に形成されている。
【００２０】
また、前記本体部１１の装飾部１５は、その表面１６が意匠面を構成し、前記ルーフの溝６４を塞ぐ幅とされて脚部１３上端から幅方向両側へ張り出している。この本体部１１における装飾部１５の表面１６には、ルーフ６１の中央側を向く装飾部１５の幅方向一側に、横断面略「く」の字状の切り欠き形状からなるレインガータ１８が形成されている。
【００２１】
前記レインガータ１８は、ルーフ６１に降った雨を車両の前後方向へ導くもので、レインガータ１８の溝内底部１９から上側に突出する部分が装飾部上段２０、下側に突出する部分が装飾部下段２１で構成されている。前記装飾部上段２０表面と下段２１表面は、いずれも装飾部１５の表面１６の一部であって、意匠面を構成している。前記装飾部上段２０の基部２２は、この実施例のように、装飾部１５の表面１６で段差を構成しないのが、美観向上の点から好ましい。また、前記レインガータ１８の溝内底部１９（図３に示す）からの突出長さは、この実施例のように装飾部上段２０を装飾部下段２１よりも短くするのが好ましい。そうすれば、モール素材１０ａの端末部１２ａを熱プレスする際に、プレスされる樹脂量が少なくなって、モール１０の薄い端末部先端側２３を形成するのが容易になり、また賦形後の歪も一層生じ難くなる。さらに、前記ルーフモール１０は、レインガータ１８の装飾部下段２１で効率良く雨水を受けることができるようになる。
【００２２】
それに対し、前記ルーフモール１０の端末部１２では、図４に示したモール素材１０ａにおける端末部裏側の除去状態から容易に理解されるように、前記脚部１３が本体部１１側から端末部１２の先端側２３に向けて薄くなるように、装飾部１５裏側で、脚部１３下側が装飾部表面１６の裏側へ向けて斜めに切除され、前記脚部１３のリップ１７についても除去されている。符号２４は、前記切除によって形成された脚部１３の切除部であり、前記ルーフ６１の溝６４端部の深さに応じて切除されている。この実施例では、前記端末部１２の先端側２３で、金属芯材１４とともに脚部１３が完全に除去されている。
【００２３】
また、前記端末部１２の装飾部１５は、前記端末部裏側の除去されたモール素材１０ａに対する熱プレス加工によって、装飾部１５表面１６が緩やかな曲面とされるとともに、端末部１２の先端側２３に向けてレインガータ１８が前記本体部１１側から徐々に閉じるように賦形されており、前記先端側２３でレインガータ１８が消失している。さらに、前記端末部１２の先端側２３は、図４に示すように、前記レインガータ１８の装飾部下段２１が前記脚部１３とともに切除され、装飾部上段２０を含む装飾部の残存部２５が熱プレス加工によって装飾部１５裏側へ略直角に折り曲げ賦形され、かつ所定の幅に拡幅されている。
【００２４】
前記構造からなるルーフモール１０の端末部先端側２３は、前記レインガータ１８の溝内底部１９より上側の装飾部上段２０及び装飾部残存部２５のみが熱プレス加工されて折り曲げ形状にされたものであるため、その先端側２３表面には装飾部上段２０と下段２１が重なった状態で熱プレスされた場合に生じる上段２０の縁２６の線や凹凸が発生せず、端末部１２の美観やルーフ６１への装着性が向上する。さらに、前記端末部先端側２３は、前記装飾部下段２１が除去され、樹脂量が少なくなっているため、熱プレス加工時の圧縮量が少なく、それにより、熱プレス後における端末部先端側２３の残存応力が僅かなものになるので、その後の歪を生じ難くなり、美観や装着性の低下を防止できる。
【００２５】
次に前記ルーフモール１０の端末部加工方法の一例について説明する。まず、図３に示す所定断面形状、すなわち前記脚部１３と装飾部１５及びその表面のレインガータ１８とを有する、押出成形品の熱可塑性樹脂製モール素材１０ａを所定長に切断する。前記装飾部１５の表面１６は意匠面を構成し、一方、前記脚部１３には金属芯材１４が埋設され、下端にリップ１７が形成されている。
【００２６】
前記所定長のモール素材１０ａに対し、図４に示すように、その端末部１２ａの裏側を所定長切除する。この切除は、前記ルーフの溝６４端部における浅くなった部分と対応する範囲に渡って行われるが、端末部先端２３ａから所要長、例えば１ｃｍ程度については脚部１３と装飾部下段２１を切除し、前記端末部１２ａの残りの長さ部分については、モール素材１０ａの本体部１０ａ側から端末部先端２３ａに向けてモール素材１０ａの厚みが薄くなるよう、脚部１３の下部１３ａが傾斜した形状に切除される。なお、切除方法は、カッターやプレス等を用いる公知の切断方法によって行われる。
【００２７】
次いで、図５の（Ａ）に示すように、前記モール素材１０ａの端末部１２ａを、裏側を上にしてプレス成形型３０の受け型３６に配置し、ヒータ等の加熱手段Ｈで端末部１２ａを加熱軟化させる。受け型３６には、所望のルーフモール端末部形状からなるキャビティ面３７が形成されている。前記加熱の程度は、端末部１２ａが軟化する程度とされ、モール素材１０ａの材質に応じて適宜の温度とされる。前記受け型３６のキャビティ面３７は、受け型３７奥のキャビティ面先端部分３８が立ち壁で構成され、前記ルーフモール１０の端末部１２における折り曲げられた先端側２３の賦形面を構成している。また、前記モール素材端末部１２ａの受け型３６への配置は、前記キャビティ面３７の先端部分３８上方にモール素材１０ａの端末部先端２３ａが乗り上げるようにして行われる。
【００２８】
前記端末部１２ａの加熱軟化後、図５の（Ｂ）に示すように、プレス成形型３０の押し型３１によって端末部１２ａの切除部２４をプレスし、所望の端末部形状に賦形する。その際、前記モール素材１０ａの端末部先端２３ａは、前記キャビティ面先端部分３８の立ち壁によって裏側へ略直角に折り曲げられるとともに、前記装飾部上段２０を含む残存装飾部２５が圧縮されて所望の厚みで拡幅される。なお、前記モール素材１０ａの端末部先端２３ａ側は、前記折り曲げによって裏面が前記装飾部下段２１及び脚部１３の切断端面１３ｂ（図４に示す）と圧着させるのが、折り曲げ形状維持の点で好ましい。
【００２９】
また、前記モール素材１０ａの端末部１２ａで余剰となる樹脂はバリとなって端末部１２ａの縁に形成され、最終的に除去される。その後、前記プレス成形型３０を開け、成形品を取り出せば、図１及び図２に示した所望のルーフモール１０の端末部１２が得られる。このようにして得られたルーフモールの端末部１２は、前記のように、美観及び装着性に優れ、またその後の歪を生じ難いものである。
【００３０】
【発明の効果】
以上図示し説明したように、請求項１ないし３の発明に係るルーフモール及びルーフモールの端末部加工方法によれば、端末部先端側については脚部と、装飾部のレインガータ側におけるレインガータの溝内底部より下側とを除去し、前記レインガータ上側を含む残存装飾部を裏側へ折り曲げ賦形しているため、ルーフモールの端末部先端側表面にはレインガータが重なった状態で熱プレスした場合に生じる線や凹凸が発生せず、端末部の美観やルーフへの装着性が向上する効果が得られる。
【００３１】
さらに、前記端末部先端側についてはレインガータの溝内底部より下側を除去し、樹脂量が少なくなった状態で熱プレスしているため、熱プレス時の圧縮量が少なくなって熱プレス後の残存応力が僅かなものになるので、その後の歪が生じ難くなり、美観や装着性を一層向上させることができる。
【００３２】
それらの効果に加えて、モール素材として、装飾部一側表面に横断面略「く」の字状の切り欠き形状からなるレインガータを備え、該レインガータの溝内底部より上側を装飾部上段、前記溝内底部より下側を装飾部下段とし、前記装飾部上段の基部に相当する装飾部表面に段差形状が存在しないものを用いているため、熱プレス加工によって折り曲げ形成された端末部先端側には、従来ではレインガータ基部の凹凸によって生じた線や凹凸が現れず、美観及び装着性を、さらに向上させることができる。
【００３３】
また、請求項３の発明では、レインガータの上側の装飾部上段を、レインガータの下側の装飾部下段よりも短くするため、モール素材の端末部を熱プレスする際に、装飾部上段を含む残存装飾部の樹脂量がさらに少なくなり、薄い端末部先端側を成形するのが一層容易になり、また賦形後の歪も一層生じ難くなる。さらに、端末部加工後のルーフモールは、レインガータで雨水を良好に受けることができるようになる。
【図面の簡単な説明】
【図１】この発明の一実施例に係るルーフモールの端末部付近を示す斜視図である。
【図２】図１のルーフモールの裏側を示す斜視図である。
【図３】モール素材の一部を示す斜視図である。
【図４】モール素材の端末部裏側除去状態を示す斜視図である。
【図５】熱プレス時を示す断面図である。
【図６】従来のルーフモールが装着された自動車の一例を示す斜視図である。
【図７】ルーフモールを外したルーフの一部を示す図である。
【図８】モール素材の一部を示す斜視図である。
【図９】モール素材の端末部裏側の削除状態を示す斜視図である。
【図１０】従来のルーフモールの端末部を示す斜視図である。
【符号の説明】
１０ルーフモール
１０ａモール素材
１２ａモール素材の端末部
１２ルーフモールの端末部
１３脚部
１５装飾部
１８レインガータ
１９レインガータの溝内底部
２０装飾部上段
２１装飾部下段
２３端末部先端側
２３ａ端末部先端
２５残存装飾部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for processing an end portion of an automobile roof molding.
[0002]
[Prior art]
As shown in FIG. 6, a roof molding 70 is often attached to the roof 61 of the automobile 60. As shown in FIG. 7 which shows a part of the roof 61 with the roof molding 70 removed, the roof molding 70 hides the joint line J where the roof panel 62 and the outer side panel 63 are joined together. It fits into a groove 64 formed at the joint between the panels 62 and 63.
[0003]
As understood from FIG. 8, the roof molding 70 includes a leg portion 71 and a decorative portion 75 provided on the upper end of the leg portion 71 and serving as a design surface, and the leg portion is formed in the groove 64 of the joint portion. 71 is inserted and the decorative portion 75 is attached so as to close the groove 64. Further, in order to correctly attach and hold the roof molding 70 to the groove 64 of the joint portion and to reduce linear expansion, the metal core material 73 is often embedded in the leg portion 71 along the longitudinal direction. Reference numeral 76 denotes a lip (fin piece) formed along the longitudinal direction on both side surfaces of the lower portion of the leg portion 71 in order to ensure the fixing to the groove 64.
[0004]
By the way, the grooves 64 of the joint portion of the roof 61 are broken at the upper corner portion 65 when both ends in the vehicle front-rear direction are press-formed at the same depth as the center of the groove 64, and therefore gradually toward the end of the groove 64. It is shallow. Therefore, if the roof molding 70 is formed by simply cutting a molding material 70a made of a long extruded product into a predetermined length, the lower end of the leg portion 71 interferes with the body and the roof molding 70 can be correctly attached. Disappear. Furthermore, since the cut surface of the molding material 70a is aesthetically inferior, if the cut portion is used as the terminal portion of the roof molding 70 as it is, there is a problem that the aesthetic appearance is lowered. Therefore, it has been proposed to injection-mold a terminal portion (not shown) matching the depth of the end of the groove 64 on the cut surface of the molding material 70a cut to a predetermined length.
[0005]
However, in the case where the terminal portion is injection-molded, there is a problem that a seam line due to injection molding occurs between the molding material and the terminal portion on the surface of the terminal portion of the roof molding, and the appearance of the roof molding is damaged. was there. Furthermore, since the shrinkage rate of the resin is different between the main body part made of the molding material of the extrusion molded product and the terminal part formed by injection molding, cracks are generated in the seam line part due to the difference or deterioration of the heat shrinkage amount. In some cases, the terminal portion and the mall material may be separated.
[0006]
Thus, as a method for solving the problem of terminal part processing by injection molding, a terminal part processing method by hot press has been proposed (Japanese Patent Laid-Open No. 10-194056). In this processing method, as shown in FIG. 9, the terminal portion 70b of the molding material 70a cut into a predetermined length is removed from the terminal portion 70b by a required amount, leaving at least the decorative portion 75, and then the terminal portion. The terminal portion 70c of the roof molding 70 shaped into a desired shape as shown in FIG. 10 is obtained by hot pressing 70b. The distal end side 70d of the terminal portion 70c formed in this way has a shape that is bent at a substantially right angle to the back side, further improving the aesthetic appearance of the terminal portion 70c.
[0007]
Some roof moldings 70 have a rain gutter 77 on the surface of the decorative portion 75 as shown. This rain garter 77 guides rain water falling on the roof 61 in the longitudinal direction of the vehicle and prevents it from dripping near the entrance door of the vehicle. Conventionally, the rain garter 77 is directed toward the center of the roof on the surface of the decorative portion 75. Thus, the rain gutter lip 78 is formed so as to project into a horn shape, and the rain gutter 77 is formed between the rain gutter lip 78 and the surface of the decorative portion 75.
[0008]
However, when the hot pressing is performed on the end portion 70b of the molding material 70a having the rain gutter 77, both the decorative portion 75 and the rain gutter lip 78 are folded and folded at the tip end side of the molding material terminal portion 70b. Therefore, the following problems occur in the terminal portion 70c of the obtained roof molding 70.
[0009]
First, a line or unevenness 79 due to the overlap of the rain gutter lip 78 is generated on the distal end side 70d of the processed terminal portion, and the aesthetic appearance is impaired. In addition, the unevenness 79 may prevent good fitting of the windshield molding in the fitting groove for the windshield molding of the roof provided so as to intersect with the end portion of the groove 64 of the roof.
[0010]
Second, since the terminal end tip side 70d is bent in a state in which the rain gutter lip 78 overlaps the decorative portion 75 and the resin thickness is increased, the amount of compression at the time of shaping by hot press is increased, There is a high risk of deformation due to residual stress after shaping. In addition, the distal end side 70d of the terminal portion cannot be unnecessarily thickened, and the amount of compression during the hot pressing cannot be reduced.
[0011]
Thirdly, due to the convenience of the hot press apparatus, at the time of hot pressing, the molding material 70a is usually arranged in the press mold so that the back side is up and the decorative portion 75 is facing down, and the molding material 70a is arranged from above the molding material 70a. Since the back side of the material is often heated, it is difficult to heat the tip of the rain garter lip 78 that is on the side opposite to the heat source and protrudes from the surface of the decorative portion 75, and easily forms due to insufficient heating. .
[0012]
[Problems to be solved by the invention]
The present invention has been made in view of the above points, and there is no line or unevenness caused by the rain gutter on the bent tip end side of the terminal portion, the appearance is beautiful, and the roof molding is less likely to be deformed after shaping. A terminal part processing method is provided.
[0013]
[Means for Solving the Problems]
According to the first aspect of the present invention, a resin molding material having a decorative portion with a rain gutter formed on the surface at the upper end of the leg portion is removed in a required amount on the back side of the end portion, and a groove of the rain gutter is formed in the end portion by hot pressing. in the shaped folded back side in the terminal portion leading end side with closed roof molding the main body portion and the terminal portion by Rukoto is a series seamlessly, the mall material, cross-section substantially in the escutcheon one surface " A rain gutter having a notch shape with a `` '' shape is provided, and the upper side of the groove inner bottom of the rain gutter is the upper part of the decorative part, and the lower side of the inner bottom of the groove is the lower part of the decorative part, which corresponds to the base of the upper part of the decorative part made from those on the escutcheon surface no stepped shape, and the legs for the terminal portion leading end side, the lower side of the groove bottom of Reingata in Reingata side of the decorative portion The decorative portion and the lower is removed, gradually closed the in the terminal portion Reingata is toward from the main body portion side to the terminal portion leading end side, as Reingata the tip side of the Reingata disappeared, the Reingata upper decorative The roof molding according to the present invention is characterized in that the remaining decorative part including the upper part is bent and shaped to the back side, and the back surface on the tip side is crimped to the lower part of the decorative part and the cut end surface of the leg part .
[0014]
The invention of claim 2 removes a required amount of the back side of the terminal part from the terminal part of the resin molding material having a decorative part having a rain gutter formed on the surface at the upper end of the leg part, and hot presses the terminal part. In the processing method of closing the groove of the rain garter at the end portion and bending the end portion of the end portion to the back side to form the bent shape, the molding material has a cross-section of substantially “ The surface of the decorative part corresponding to the base of the upper part of the decorative part, comprising a rain garter having a letter-shaped cutout shape, wherein the upper part of the rain garter is above the groove bottom of the groove and the upper part of the decorative part is below the bottom of the groove. used as there is no stepped shape, when the terminal portion (12a) back in the removal, for the terminal portion leading end side, and the leg portion, the grooves of Reingata in Reingata side of the decorative portion Bottom is removed and the decorative portion lower lower than, the terminal portion at the time of shaping folded by hot pressing the terminal portion leading end side, the the terminal portion of the molding material Reingata is directed to the terminal tip end The remaining decorative part including the upper part of the decorative part on the upper side of the rain garter is bent to the back side so that the rain garter disappears on the front side of the rain garter, and the rear surface on the front side is bent on the lower part of the decorative part and the leg part. The method according to the present invention relates to a method for processing a terminal portion of a roof molding, characterized in that it is pressure-bonded to the cut end face .
[0015]
Further, the invention of claim 3 is that, in claim 2, the upper part of the decorative part is shorter than the lower part of the decorative part with respect to the protruding length from the bottom of the groove of the rain gutter, and the upper part of the decorative part is The remaining decorative part is widened and shaped .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing the vicinity of a terminal portion of an automotive roof molding according to one embodiment of the present invention, FIG. 2 is a perspective view showing the back side of the roof molding in FIG. 1, and FIG. 3 is a perspective view showing a part of the molding material. FIG. 4 is a perspective view showing a state in which the back side of the molding material is removed, and FIG. 5 is a cross-sectional view showing the state during hot pressing.
[0017]
First, an example of a roof molding according to the invention of claim 1 will be described, and then an example of a method for processing the end portion of the roof molding will be described.
[0018]
As shown in FIG. 4, the automobile roof molding 10 shown in FIG. 1 and FIG. 2 is obtained from an extruded molded thermoplastic resin molding material 10 a having a predetermined cross-sectional shape shown in FIG. The body portion 11a is removed from the back side of the end portion 12a of the molding material 10a and is then hot-pressed. The main body portion 11 is mounted on the deep portion of the groove 64 of the roof 61 shown in FIG. The terminal unit 12 to be attached to the terminal is a series without a joint line.
[0019]
The main body 11 has the same cross-sectional shape as the molding material 10 a, and a leg portion 13 and a decorative portion 15 are integrally formed on the upper end of the leg portion 13.
The leg portion 13 in the main body portion is inserted into the groove 64 of the roof 61 to fit the roof molding 10 into the groove 64. The metal core 14 is embedded in the leg portion 13. On both sides, a lip 17 made of a soft resin is integrally formed in order to stably hold the roof molding 10 by pressing against the side wall of the groove 64 when the leg portion 13 is inserted into the groove 64. Yes.
[0020]
Further, the decorative portion 15 of the main body 11 has a surface 16 constituting a design surface, and has a width that closes the groove 64 of the roof, and projects from the upper end of the leg portion 13 to both sides in the width direction. On the surface 16 of the decorative portion 15 in the main body portion 11, a rain garter 18 having a notch shape with a substantially “<” shape in cross section is formed on one side in the width direction of the decorative portion 15 facing the center side of the roof 61. Has been.
[0021]
The rain garter 18 guides rain that has fallen on the roof 61 in the longitudinal direction of the vehicle. A portion of the rain garter 18 that protrudes upward from the groove bottom 19 is an upper portion 20 of the decorative portion, and a portion that protrudes downward is a lower portion of the decorative portion. 21. Both the upper surface 20 and the lower surface 21 of the decorative part are part of the surface 16 of the decorative part 15 and constitute a design surface. It is preferable from the viewpoint of improving aesthetics that the base portion 22 of the upper portion 20 of the decorative portion does not form a step on the surface 16 of the decorative portion 15 as in this embodiment. The protrusion length of the rain gutter 18 from the groove bottom 19 (shown in FIG. 3) is preferably such that the upper part 20 of the decorative part is shorter than the lower part 21 of the decorative part as in this embodiment. Then, when the terminal portion 12a of the molding material 10a is hot-pressed, the amount of resin to be pressed is reduced, and it becomes easier to form the thin terminal portion distal end side 23 of the molding 10 and after shaping. The distortion becomes even less likely to occur. Furthermore, the roof molding 10 can efficiently receive rainwater at the decorative section lower stage 21 of the rain gutter 18.
[0022]
On the other hand, in the terminal part 12 of the roof molding 10, the leg part 13 is connected to the terminal part 12 from the main body part 11 side so that it can be easily understood from the removed state of the back side of the molding material 10a shown in FIG. The lower side of the leg portion 13 is cut obliquely toward the back side of the decorative portion surface 16 on the back side of the decorative portion 15 so as to become thinner toward the distal end side 23 of the decorative portion 15, and the lip 17 of the leg portion 13 is also removed. . Reference numeral 24 denotes a cut portion of the leg portion 13 formed by the cutting, and is cut according to the depth of the end portion of the groove 64 of the roof 61. In this embodiment, the leg portion 13 is completely removed together with the metal core material 14 at the distal end side 23 of the terminal portion 12.
[0023]
In addition, the decorative portion 15 of the terminal portion 12 has the surface 16 of the decorative portion 15 formed into a gentle curved surface by heat press processing on the molding material 10a removed on the back side of the terminal portion, and the distal end side 23 of the terminal portion 12. The rain garter 18 is shaped so as to be gradually closed from the main body 11 side, and the rain garter 18 disappears on the distal end side 23. Further, as shown in FIG. 4, the lower end portion 21 of the rain garter 18 is cut off together with the leg portion 13 and the remaining portion 25 of the decorative portion including the upper portion 20 of the decorative portion is heated on the distal end side 23 of the terminal portion 12. It is bent at a substantially right angle to the back side of the decorative portion 15 by pressing and is widened to a predetermined width.
[0024]
The end portion 23 on the end of the roof molding 10 having the above-described structure is formed by bending only the upper part 20 and the remaining part 25 of the decorative part above the groove bottom part 19 of the rain gutter 18 by hot pressing. Therefore, there is no line or unevenness of the edge 26 of the upper stage 20 that is generated when the decorative part upper stage 20 and the lower stage 21 overlap with each other on the front end side 23 surface. The mounting property to 61 is improved. Further, since the decorative portion lower stage 21 is removed and the amount of resin is reduced, the terminal portion distal end side 23 has a small amount of compression at the time of hot press processing. Since the residual stress is small, it is difficult for subsequent distortion to occur, and the appearance and wearability can be prevented from being deteriorated.
[0025]
Next, an example of the terminal part processing method of the roof molding 10 will be described. First, a thermoplastic resin molding blank 10a having a predetermined cross-sectional shape shown in FIG. 3, that is, the leg portion 13, the decorative portion 15, and the rain gutter 18 on the surface thereof is cut into a predetermined length. A surface 16 of the decorative portion 15 constitutes a design surface, while a metal core 14 is embedded in the leg portion 13 and a lip 17 is formed at the lower end.
[0026]
As shown in FIG. 4, the back side of the terminal portion 12a is cut out for a predetermined length with respect to the predetermined length of the molding material 10a. This excision is performed over a range corresponding to the shallow portion at the end of the groove 64 of the roof, but the leg portion 13 and the decoration lower portion 21 are excised from the end portion 23a for a required length, for example, about 1 cm. In the remaining length portion of the terminal portion 12a, the lower portion 13a of the leg portion 13 is inclined so that the thickness of the molding material 10a decreases from the body portion 10a side of the molding material 10a toward the terminal portion tip 23a. Cut into shape. The excision method is performed by a known cutting method using a cutter or a press.
[0027]
Next, as shown in FIG. 5A, the terminal portion 12a of the molding material 10a is placed on the receiving die 36 of the press mold 30 with the back side up, and the terminal portion 12a is heated by heating means H such as a heater. Soften by heating. The receiving die 36 is formed with a cavity surface 37 having a desired roof molding terminal portion shape. The degree of the heating is such that the terminal portion 12a is softened, and is set to an appropriate temperature according to the material of the molding material 10a. The cavity surface 37 of the receiving mold 36 is configured such that a cavity surface front end portion 38 at the back of the receiving mold 37 is formed of a standing wall, and forms a shaping surface of the bent distal end side 23 of the end portion 12 of the roof molding 10. Yes. In addition, the molding material terminal portion 12a is placed on the receiving mold 36 so that the terminal portion tip 23a of the molding material 10a rides over the tip portion 38 of the cavity surface 37.
[0028]
After the heat softening of the terminal portion 12a, as shown in FIG. 5B, the cut portion 24 of the terminal portion 12a is pressed by the pressing die 31 of the press mold 30 and shaped into a desired terminal portion shape. At that time, the distal end 23a of the molding material 10a is bent substantially perpendicularly to the back side by the standing wall of the cavity surface distal end portion 38, and the remaining decorative portion 25 including the upper portion 20 of the decorative portion is compressed to be desired. Widened by thickness. It should be noted that the end portion 23a side of the molding material 10a has its back surface pressed against the decorative portion lower step 21 and the cut end surface 13b (shown in FIG. 4) of the leg portion 13 by bending to maintain the bent shape. preferable.
[0029]
Further, the excess resin at the terminal portion 12a of the molding material 10a becomes a burr and is formed at the edge of the terminal portion 12a and finally removed. Then, if the said press-molding die 30 is opened and a molded product is taken out, the terminal part 12 of the desired roof molding 10 shown in FIG.1 and FIG.2 will be obtained. The terminal 12 of the roof molding thus obtained is excellent in aesthetics and wearability as described above, and is less likely to cause subsequent distortion.
[0030]
【The invention's effect】
As illustrated and described above, according to the roof molding and the roof molding terminal processing method according to the first to third aspects of the present invention, the leg portion is provided on the distal end side of the terminal portion and the groove of the rain garter on the rain garter side of the decorative portion. Since the bottom of the inner bottom part is removed and the remaining decorative part including the upper side of the rain gutter is bent and shaped to the back side, when the heat girder is overlapped on the front end side surface of the roof molding with the rain gutter overlapped The resulting lines and irregularities do not occur, and the effect of improving the beauty of the terminal portion and the ease of mounting on the roof can be obtained.
[0031]
Furthermore, since the lower end of the rain gutter is removed from the bottom end of the rain garter on the tip end side of the terminal portion, and the heat amount is reduced in a state where the amount of resin is reduced, the amount of compression at the time of hot pressing is reduced, and Since the residual stress becomes slight, subsequent distortion is less likely to occur, and aesthetics and wearability can be further improved.
[0032]
In addition to these effects , the molding material is provided with a rain garter having a cut-out shape with a substantially cross-sectional shape of the cross section on the one side surface of the decorative part, the upper part of the groove part of the rain garter above the groove upper part, Since the bottom part of the groove is the lower part of the decorative part, and there is no step shape on the decorative part surface corresponding to the base part of the upper part of the decorative part, the tip side of the terminal part that is bent by hot press processing is used. In the prior art, lines and irregularities caused by the irregularities of the rain gutter base do not appear, and the aesthetics and the wearability can be further improved.
[0033]
In the invention of claim 3 , the upper part of the decorative part on the upper side of the rain gutter is made shorter than the lower part of the decorative part on the lower side of the rain gutter. The amount of resin in the decorative portion is further reduced, it becomes easier to mold the tip end side of the thin end portion, and distortion after shaping is further less likely to occur. Furthermore, the roof molding after processing the terminal portion can receive rainwater well with the rain gutter.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the vicinity of a terminal portion of a roof molding according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the back side of the roof molding in FIG. 1;
FIG. 3 is a perspective view showing a part of a molding material.
FIG. 4 is a perspective view showing a state in which the back side of the molding material is removed.
FIG. 5 is a cross-sectional view showing a state during hot pressing.
FIG. 6 is a perspective view showing an example of an automobile equipped with a conventional roof molding.
FIG. 7 is a view showing a part of the roof with the roof molding removed.
FIG. 8 is a perspective view showing a part of a molding material.
FIG. 9 is a perspective view showing a deleted state of the back side of the terminal portion of the mall material.
FIG. 10 is a perspective view showing a terminal portion of a conventional roof molding.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Roof molding 10a Mall material 12a Terminal part of molding material 12 End part of roof molding 13 Leg part 15 Decoration part 18 Rain gutter 19 Rain gutter groove inner bottom part 20 Decoration part upper stage 21 Decoration part lower stage 23 Terminal part front end side 23a Terminal part front end 25 Remaining decoration part

Claims

The resin molding material (10a) having the decorative part (15) with the rain gutter (18) formed on the surface at the upper end of the leg part (13) is removed by the required amount on the back side of the terminal part (12a), a series without the body portion (11) and the terminal portion (12) is seam by Rukoto is shaped folded back side in the terminal portion leading end side (23) with grooves is closed in Reingata by the terminal portions (12a) (18) In the roof mall,
The molding material (10a) includes a rain garter (18) having a notch shape having a substantially cross-sectional shape in cross section on the surface of one side of the decoration portion, and the upper side from the groove bottom (19) of the rain garter is decorated. The upper part (20), the lower part from the groove bottom (19) is the decorative part lower part (21), and there is no step shape on the decorative part surface (16) corresponding to the base of the decorative part upper part (20) Consists of
As for the distal end side (23) of the terminal portion, the lower part (21) of the decoration part below the leg part (13) and the groove bottom part (19) of the rain garter on the rain garter (18) side of the decoration part (15 ). And the rain gutter (18) in the terminal portion (12a) is gradually closed from the main body portion (11) toward the tip end side (23) of the terminal portion (12a). (18) disappears, the remaining decorative part (25) including the upper decorative part (20) on the upper side of the rain garter is bent to the back side, and the back side of the tip side (23) is the lower part of the decorative part ( 21) and a cut end surface (13b) of the leg portion (13), and a roof molding characterized by being pressure-bonded .

The rear side of the terminal part (12a) is required with respect to the terminal part (12a) of the resin molding material (10a) having the decorative part (15) with the rain gutter (18) formed on the surface at the upper end of the leg part (13). The terminal portion (12a) is hot-pressed to close the groove of the rain garter (18) at the terminal portion (12a), and the distal end side (23) of the terminal portion is folded back to form the bent shape. In the processing method,
As the molding material (10a), there is a rain gutter (18) having a notch shape with a substantially cross-sectional shape in cross section on the surface of one side of the decorative part, and the upper side from the groove bottom (19) of the rain gutter is decorated. The upper part (20), the lower part from the groove bottom (19) is the decorative part lower part (21), and there is no step shape on the decorative part surface (16) corresponding to the base of the decorative part upper part (20) Use
When removing the back side of the terminal portion (12a), the tip end side (23) of the terminal portion (13) and the bottom of the groove (19) of the rain gutter on the side of the rain gutter (18) of the decorative portion (15) ) And lower the lower part (21) of the decorative part ,
When the terminal part (12a) is hot-pressed and bent at the terminal part tip side (23), the rain gutter (18) in the terminal part (12a) of the molding material (10a) is connected to the terminal part tip side ( 23) and the remaining decorative portion (25) including the upper portion (20) of the decorative portion on the upper side of the rain garter is moved to the back side so that the rain garter (18) disappears on the tip side of the rain garter (18) . A method for processing a terminal portion of a roof molding , comprising bending and crimping the back surface of the front end side (23) to the lower end portion (21) of the decorative portion and the cut end surface (13b) of the leg portion (13) .

The upper part (20) of the decorative part is shorter than the lower part (21) of the decorative part with respect to the protrusion length from the groove bottom part (19) of the rain garter, and the upper part (20) of the decorative part is subjected to hot pressing of the terminal part (12a). The method for processing a terminal part of a roof molding according to claim 2, wherein the remaining decorative part (25) containing