JP3869763B2

JP3869763B2 - Lower sash structure of automobile door

Info

Publication number: JP3869763B2
Application number: JP2002176606A
Authority: JP
Inventors: 伸幸行木
Original assignee: Kinugawa Rubber Industrial Co Ltd
Current assignee: Kinugawa Rubber Industrial Co Ltd
Priority date: 2002-06-18
Filing date: 2002-06-18
Publication date: 2007-01-17
Anticipated expiration: 2022-06-18
Also published as: JP2004017838A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車用ドアにおけるロアサッシュの構造に関し、特に自動車用ドアの内部に配設されてドアガラスを昇降可能に案内支持するべく、樹脂材料をもって一体成形タイプのもとして形成されたロアサッシュの構造に関する。
【０００２】
【従来の技術と発明が解決しようとする課題】
この種の樹脂一体成形タイプのロアサッシュの構造として例えば特開平９−２４０２７９号公報および特開２０００−８０８５７号公報等に記載のものが知られており、金属製のグラスランチャンネルにグラスランラバーを取り付けたタイプのものと比べて軽量化や製造コストの低減の上で有利となるとされている。特に上記公報に記載のものでは材料費と重量軽減及び金型構造の簡素化に主眼がおかれていて、いずれのものもチャンネル状のサッシュの底壁部に相当する部分では必要最小限のリブを残してそれ以外の部分が打ち抜かれていて、実質的に開放底壁構造となっている。
【０００３】
その一方、ロアサッシュの主要機能としてはドアガラスを案内支持するだけでなくドア内部での流水経路を確保する役割があり、例えば図１０に示したフロントドア１のうちリア側のロアサッシュ３０を例にとればそのロアサッシュ３０の後方下部にドアロックアクチュエータ３１が配置されることになる。そして、先に述べた開放底壁構造のロアサッシュ３０では流水経路を十分に確保することができず途中から水が漏れることから、そのドアロックアクチュエータ３１を水濡れから十分に保護することができない。
【０００４】
なお、ドアロックアクチュエータ３１はある程度の防水性能を有してはいるものの、例えば降雨時に長時間にわたり水濡れ状態にさらされるようなことはアクチュエータ本来の性能維持の上で極力回避することが望ましい。
【０００５】
本発明は以上のような課題に着目してなされたものであり、いわゆる樹脂一体成形タイプのロアサッシュでありながらもサッシュ本来の流水経路を確実に確保できるようにした構造を提供するものである。
【０００６】
【課題を解決するための手段】
請求項１に記載の発明は、自動車用ドアの内部に配設されてドアガラスを昇降可能に案内支持する樹脂製のロアサッシュであって、断面チャンネル状のサッシュ本体のうち互いに対向する一対の側壁部の開口縁に、チャンネル状空間の内方に向かって突出するガラスガイド部を長手方向に沿って所定間隔ごとに形成するとともに、サッシュ本体の底部相当部には側壁部同士を連結するブリッジ底壁部と開口窓部とを長手方向に沿って交互に形成し、ブリッジ底壁部の下端部にチャンネル状空間の内方を指向する下部流水ガイドを、ブリッジ底壁部の上端部にチャンネル状空間の外方を指向する上部流水ガイドをそれぞれ形成したことを特徴とする。
【０００７】
ここで、下部流水ガイドについてはチャンネル状空間の内方を、上部流水ガイドについてはチャンネル状空間の外方をそれぞれ指向させているのは、実質的に開放底壁部構造となっているサッシュ本体のチャンネル状空間を流水路として有効に機能させるべく、サッシュ本体の底壁部において下部流水ガイドから流れ落ちる水をその下方に位置することになる上部流水ガイドにて受け止めて、流水路となるサッシュ本体のチャンネル状空間側に流すためである。
【０００８】
この場合において、ガラスガイド部と開口窓部が長手方向で相互にオフセットしていてもよいが、例えばロアサッシュを射出成形法等にて成形するための金型構造の簡素化の上では、請求項２に記載のように開口窓部に対応する位置において一対の側壁部の開口縁にガラスガイド部を互いに対向するように形成することが望ましい。
【０００９】
また、上記のようにサッシュ本体の底壁部において下部流水ガイドから流れ落ちる水をその下方に位置することになる上部流水ガイドにて受け止めるためには、請求項３に記載のように、開口窓部をはさんでその上下に位置することになる下部流水ガイドと上部流水ガイドの相対位置関係として、自動車用ドアに対するロアサッシュの正規取付状態において双方の流水ガイドが鉛直方向で相互にオーバーラップしていることが望ましい。
【００１０】
そして、請求項４に記載のように、ブリッジ底壁部の下端部をチャンネル状空間の内方に向けて折り曲げることで下部流水ガイドとするとともに、ブリッジ底壁部の上端部をチャンネル状空間の外方に向けて折り曲げることで上部流水ガイドとし、各流水ガイドを、肉厚がその先端に向かって漸次小さくなるウエッジ形状とすることが、各流水ガイドの裏側への水の回り込みを防止する上で有効である。
【００１１】
また、請求項５に記載のように、下部流水ガイドの案内面の形状として、下方に向かって水の流れを両側の側壁部とのなす内隅部に指向させる形状となっていることが水を流下を促進する上で望ましく、さらには請求項６に記載のように、側壁部には下部流水ガイドに連続するビード状ガイドが形成されていることがより望ましい。
【００１２】
したがって、請求項１〜６に記載の発明では、実質的に開放底壁構造のロアサッシュであっても、下部流水ガイドからチャンネル状空間の外側に一旦流れ落ちた水を上部流水ガイドで受けてブリッジ底壁部に流すようにして、このような流れのサイクルを何回か繰り返すことにより、ロアサッシュの上端から下端にわたって連続した流水路が確保され、従来のようにロアサッシュの途中から水がしたたり落ちることがなくなり、例えばロアサッシュと近接配置されるドアロックアクチュエータ等を水濡れから保護することができるようになる。
【００１３】
特に請求項５に記載のように、下部流水ガイドと側壁部とのなす内隅部に水を流れを指向させると、水の流れの連続性が確保しやすくなり、排水性能が一段と良好なものとなるほか、請求項６に記載のように下部流水ガイドに連続するビード状ガイドが形成されていると、ブリッジ底壁部に相当する部分ではそのビード状ガイドを伝って水が流れるようになり、下部流水ガイドから滴下する水滴を上部流水ガイドにて受け止める場合と比べて飛沫の発生等の防止の上で有効となる。
【００１４】
請求項７に記載発明は、自動車用ドアの内部に配設されてドアガラスを昇降可能に案内支持する樹脂製のロアサッシュであって、断面チャンネル状のサッシュ本体のうち互いに対向する一対の側壁部の開口縁に、チャンネル状空間の内方に向かって突出するガラスガイド部を長手方向に沿って所定間隔ごとに形成し、サッシュ本体の底壁部には底壁面としての長手方向での連続性を保ちながらその長手方向に沿って互い違いとなるように開口窓部を千鳥状に形成するとともに、各開口窓部の周囲にはその窓部空間を囲繞するダムビードを形成して、底壁部のうち開口窓部以外の部分をもって長手方向で連続した流水路としたことを特徴とする。
【００１５】
この場合、請求項２と同様の理由から、請求項８に記載のように開口窓部に対応する位置において各側壁部の開口縁にガラスガイド部を形成して、双方の側壁部でのガラスガイド部の配置が互い違いとなって千鳥状のものとなるようにすることが望ましい。
【００１６】
また、請求項９に記載のように、各開口窓部の下端部側でのダムビードを局部的に切除してその窓部空間を流水路側に開放する一方、各開口窓部の下端縁をチャンネル状空間の外方側に折り曲げることにより下部流水ガイドを形成した構造としてもよい。
【００１７】
したがって、請求項７〜９に記載の発明では、ダムビードによって各開口窓部が隔離されることで、底壁部をもってロアサッシュの上端から下端にわたって連続した流水路が確保される。
【００１８】
【発明の効果】
請求項１，２に記載の発明によれば、いわゆる開放底壁構造の断面チャンネル状のロアサッシュであっても、ロアサッシュの途中からの水漏れを未然に防止して流水路としての機能を発揮させることができることから、例えばロアサッシュと近接配置されるドアロックアクチュエータ等を水濡れから十分に保護することができるようになる。
【００１９】
特に、請求項３に記載の発明によれば、下部流水ガイドと上部流水ガイドが鉛直方向で相互にオーバーラップしているから、下部流水ガイドから滴下する水を上部流水ガイドにて確実に受け止めることができ、ロアサッシュからの水漏れをより確実に防止できる効果がある。
【００２０】
請求項４に記載の発明によれば、折り曲げ形成した下部流水ガイドおよび上部流水ガイドのそれぞれをウエッジ形状のものとしたことにより、各流水ガイドでの水切れが良くなり、流水ガイドの裏面側への水の回り込みひいいては水漏れを未然に防止できる効果がある。
【００２１】
請求項５に記載の発明によれば、下部流水ガイドの案内面は水の流れを側壁部とのなす内隅部側に指向させるようになっていることにより、水の流れの連続性が確保されて、排水性能が向上する効果がある。
【００２２】
請求項６に記載の発明によれば、側壁部には下部流水ガイドに連続するビード状ガイドが形成されていることにより、下部流水ガイドから上部流水ガイド側に流れる水がビード状ガイドを伝わって流れるようになるため、下部流水ガイドから上部流水ガイド側に水が滴下するのに比べて飛沫の発生がなく、その飛沫の発生を原因とする水漏れをも未然に防止できる効果がある。
【００２３】
請求項７，８に記載の発明によれば、開口窓部が千鳥状に形成されたサッシュ本体の底壁部の連続性を有効利用して、上端から下端にわたる連続した流水路を確保するようにしたため、請求項１と同様の効果が得られ、特に底壁部そのものが連続しているためにロアサッシュの途中からの水漏れをより確実に防止できる利点がある。
【００２４】
請求項９に記載の発明によれば、ダムビードと下部流水ガイドとを併用するようにしたため、万が一ロアサッシュの裏面側に水が回り込むことがあったとしても、その水を下部流水ガイドで捕集してチャンネル状空間側に戻すことができるようになり、ロアサッシュの途中からの水漏れをより確実に防止できる利点がある。
【００２５】
【発明の実施の形態】
図１〜５は本発明の好ましい実施の形態を示す図であり、図１に示すように自動車のフロントドア１の内部であって且つそのリア側に配設されるロアサッシュ２の例を示している。
【００２６】
図２に示すように、ロアサッシュ２は、断面略チャンネル状をなすサッシュ本体３とその上端のボックス状のソケット部４および下端の取付ブラケット部５とを含む全体形状を例えばポリアセタール（ＰＯＭ）等の樹脂材料をもって一体成形したものである。そして、ロアサッシュ２は図１に示すような後傾姿勢をもってフロントドア１に対する正規組み付け状態とされ、上端のソケット部４が図示しないアッパーサッシュに嵌合固定されるとともに取付ブラケット部５が例えばドアインナーパネルにねじ締め固定される。そして、図示外のフロント側のロアサッシュとともにドアガラスを昇降可能に案内支持するようになっている。
【００２７】
サッシュ本体３は、不連続の複数のブリッジ底壁部６をもって左右の側壁部７，７同士を連結したものであり、その底壁相当部では矩形状の窓状開口部８とブリッジ底壁部６とが長手方向で交互に配置されている。そして、双方の側壁部７，７のうち各窓状開口部８に相当する部分では、その開口縁部が内側に向かって互いに対向するように円弧状に膨出成形されてドアガラスに接触するガラスガイド部９を形成している。
【００２８】
また、図２，３に示すように、各ブリッジ底壁部６の上端部はチャンネル状空間の外側を指向するように折り曲げられて上部流水ガイド１０を形成している一方、同じく各ブリッジ底壁部６の下端部はチャンネル状空間の内側を指向するように折り曲げられて下部流水ガイド１１を形成している。これらの上部流水ガイド１０および下部流水ガイド１１は、ロアサッシュ２の上端側から伝い落ちる水が開口窓部８からロアサッシュ２の外部に流れ落ちるのを防ぎ、その水を下部流水ガイド１１から滴下させてその下方の上部流水ガイド１０にて受けるために設定したものであり、下部流水ガイド１１から滴下する水をその下方の上部流水ガイド１０にて確実に受けるために、図２，３に示すように下部流水ガイド１１とその下方の上部流水ガイド１０の相対位置関係として両者を鉛直方向で所定量αだけオーバーラップさせてある。そして、上部流水ガイド１０および下部流水ガイド１１ともにその先端から裏面側への水を回り込みを防止しつつその水切れを良くするために、各ガイドの根元部から先端面側に向かって漸次肉厚が小さくなるように断面ウエッジ状に形成してある
さらに、下部流水ガイド１１についてはその案内面１１ａから流れ落ちる水を両側の側壁部７，７とのなす内隅部に集めるために、案内面１１ａの中央部を上方に向けて滑らかに円弧状に膨出させて、その膨出量が下方ほど大きく且つ膨出幅が下方ほど大きくなるように設定してある。したがって、少なくともブリッジ底壁部６を流れ落ちる水がその下端部の下部流水ガイド１１の案内面１１ａに至ると、膨出した案内面１１ａによって左右に振り分けられて徐々に両側の側壁部７，７とのなす内隅部側に集められるように設定してある。
【００２９】
ここで、下部流水ガイド１１の案内面１１ａに上記と同等の機能を発揮させるために、例えば図４に示したように案内面１１ｂそのものを三角状に隆起した形状としたり、あるいは図５に示したようにフラットな案内面１１ｃにビード１１ｄをＶ字状に形成するようにしてもよい（ただし、図４，５では図２と同様のビード状ガイド１２を図示省略してある）。
【００３０】
一方、両側の側壁部７，７については、図２，３に示すように下部流水ガイド１１と側壁部７，７とのなす内隅部が終わる位置を始端部としてその内隅部もしくは下部流水ガイド１１の案内面１１ａに連続する極小断面形状のビード状ガイド１２を形成してある（ただし、図１では図面の錯綜化を避けるためにビード状ガイド１２を図示省略してある）。このビード状ガイド１２は、膨出した案内面１１ａによって両側の側壁部７，７とのなす内隅部側に集められた水をその下方の上部流水ガイド１０側へ伝い流すために設定したものであり、したがってその機能からして図２，３に示すようにビード状ガイド１２の終了位置は下部流水ガイド１１と同様にしてその下方の上部流水ガイド１０に対して鉛直方向で所定量だけオーバーラップした位置とすることが望ましい。
【００３１】
したがって、以上のようなロアサッシュ２の構造によれば、ロアサッシュ２そのものを流水路として上方側から伝い落ちる水は、ブリッジ底壁部６の下端の下部流水ガイド１１から滴下されてその下方のブリッジ底壁部６における上部流水ガイド１０で受け止められ、このような挙動を何回か繰り返すことでロアサッシュ２の下方まで導かれて排水される。より詳しくは、図２，３にも示すようにブリッジ底壁部６を伝い落ちる水は、下部流水ガイド１１の案内面１１ａによってその両側の側壁部７，７とのなす内隅部側に積極的に集められることから、下部流水ガイド１１から上部流水ガイド１０側へ水が直接滴下する以外に、多くの水は案内面１１ａと側壁部７，７とのなす内隅部からその下方のビード状ガイド１２を伝わって下側のブリッジ底壁部６へと導かれるようになる。そのために、ロアサッシュ２特にブリッジ底壁部６が流水路Ｄとして機能を十分に発揮し、ブリッジ底壁部６，６同士の間に存在する開口窓部８から水が漏れ出すことがなく、図１０のようにロアサッシュ２と近接配置されるドアロックアクチュエータ３１を水濡れから保護することができる。その上、下部流水ガイド１１がチャンネル状空間の内側を指向するように折り曲げられているので、万が一ドアガラスが転び現象を生じたとしてもドアガラスの端面がサッシュ本体３のブリッジ底壁部６に直接接触して引っ掛かってしまうようなこともない。
【００３２】
図６，７は本発明の第２の実施の形態を示す図である。ただし、図１〜３に示した第１の実施の形態と共通する部分には同一符号を付してある。
【００３３】
この第２の実施の形態のロアサッシュ２２は、断面チャンネル状のサッシュ本体２３における両側の側壁部７，７に円弧状に湾曲したガラスガイド部９をいわゆる千鳥状配置となるように交互に突出形成する一方、底壁部１６には各ガラスガイド部９と同じ配置となるように左右いずれか一方に片寄った開口窓部１８を交互に形成したものである。これにより、底壁部１６そのものの長手方向での連続性が予め確保されている。そして、各開口窓部１８の周縁部にはその開口空間を囲繞するように一段高いダムビード１３を突設してあり、底壁部１６のうち開口窓部１８以外の部分が流水路Ｄとして機能するように設定してある。
【００３４】
したがって、この第２の実施の形態によれば、ロアサッシュ２２に開口窓部１８が形成されていたとしても底壁部１６そのものが上下方向での連続性が予め確保されていることから流水路Ｄとしての機能を十分に発揮し、水は図７に符号Ｗで示すように蛇行しながら底壁部１６に沿って流れ落ちることになる。したがって、第１の実施の形態と同様にロアサッシュ２２の途中からの水漏れやそれを原因とするドアロックアクチュエータ３１（図１０参照）の水濡れを未然に防止することができる。
【００３５】
ここで、図７，８に示すように、ダムビード１３が形成された底壁部１６にダムビード１３と干渉しないように、すなわち水の流れＷに沿った蛇行した溝２５を予め形成しておくと、水がその溝２５を中心として流れることになるので、流水性能もしくは排水性が一段と良好となる利点がある。
【００３６】
図９は本発明の第３の実施の形態を示し、図６，７に示した第２の実施の形態と比較すると明らかなように、各窓状開口部１８を囲繞するように設けられたダムビード１３の下流側を部分的に切除して流水路Ｄ側に開放する一方、そのダムビード欠損部分に相当する窓状開口部１８の下縁部をチャンネル状空間の外側に折り曲げて、図２，３に示したものと同様の下部流水ガイド２０を形成してある。
【００３７】
この第３の実施の形態によれば、ダムビード１３があることによって第２の実施の形態と同様の効果が得られるほか、下部流水ガイド２０があるために万が一底壁部１６の裏面側を水が流れたような場合に、その水を下部流水ガイド２０で受けて本来の流水路Ｄ側に誘導することができる利点がある。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態を示すロアサッシュ単独での斜視図。
【図２】図１の要部拡大斜視図。
【図３】図１の要部垂直断面図。
【図４】図２の変形例を示す斜視図。
【図５】図２の他の変形例を示す斜視図。
【図６】本発明の第２の実施の形態を示すロアサッシュ単独での斜視図。
【図７】図６の要部正面図。
【図８】図７の変形例を示す図で、図７のＡ−Ａ線に沿う断面図。
【図９】本発明の第３の実施の形態を示す要部斜視図。
【図１０】自動車のフロントドアの説明図。
【符号の説明】
１…フロントドア
２…ロアサッシュ
３…サッシュ本体
６…ブリッジ底壁部
７…側壁部
８…窓状開口部
９…ガラスガイド部
１０…上部流水ガイド
１１…下部流水ガイド
１１ａ…案内面
１１ｂ…案内面
１１ｃ…案内面
１２…ビード状ガイド
１３…ダムビード
１６…底壁部
１８…窓状開口部
２０…下部流水ガイド
２２…ロアサッシュ
２３…サッシュ本体
Ｄ…流水路[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a lower sash in an automobile door. About.
[0002]
[Prior art and problems to be solved by the invention]
As this type of resin integrated molding type lower sash, for example, those described in JP-A-9-240279 and JP-A-2000-80857 are known, and a glass run rubber is attached to a glass run channel made of metal. It is said that it is advantageous in terms of weight reduction and manufacturing cost reduction compared to the type. In particular, the material described in the above publication focuses on material cost and weight reduction and simplification of the mold structure, and all of them are the minimum ribs in the portion corresponding to the bottom wall portion of the channel-shaped sash. The other parts are punched out, leaving a substantially open bottom wall structure.
[0003]
On the other hand, the main function of the lower sash is not only to guide and support the door glass but also to secure a flowing water path inside the door. For example, the lower sash 30 on the rear side of the front door 1 shown in FIG. 10 is taken as an example. In this case, the door lock actuator 31 is disposed at the lower rear portion of the lower sash 30. In the lower sash 30 having the above-described open bottom wall structure, a sufficiently flowing water path cannot be secured, and water leaks from the middle, so that the door lock actuator 31 cannot be sufficiently protected from being wet.
[0004]
Although the door lock actuator 31 has a certain level of waterproof performance, it is desirable to avoid as much as possible from the standpoint of maintaining the original performance of the actuator, for example, that the door lock actuator 31 is exposed to a wet condition for a long time when it rains.
[0005]
The present invention has been made paying attention to the above-described problems, and provides a structure capable of reliably securing the original water flow path while being a so-called resin-integrated type lower sash.
[0006]
[Means for Solving the Problems]
The invention according to claim 1 is a resin-made lower sash that is disposed inside an automobile door and guides and supports the door glass so that it can be raised and lowered, and a pair of side walls that face each other in a cross-sectional channel-shaped sash body. A glass guide portion projecting inward of the channel-shaped space is formed at predetermined intervals along the longitudinal direction at the opening edge of the portion, and the bottom of the sash body is connected to the bottom of the bridge connecting the side walls. The wall and the opening window are alternately formed along the longitudinal direction, and the lower running water guide that points inward of the channel-shaped space at the lower end of the bridge bottom wall and the channel at the upper end of the bridge bottom wall An upper running water guide directed to the outside of the space is formed.
[0007]
Here, the sash body having a substantially open bottom wall structure is directed to the inside of the channel-shaped space for the lower running water guide and to the outside of the channel-shaped space for the upper running water guide, respectively. In order to effectively function the channel-shaped space of the sash body, the water flowing from the lower water flow guide at the bottom wall portion of the sash body is received by the upper water flow guide located below the sash body to become a water flow path It is for flowing to the channel-like space side.
[0008]
In this case, the glass guide portion and the opening window portion may be offset from each other in the longitudinal direction.For example, in terms of simplifying the mold structure for forming the lower sash by an injection molding method or the like, As described in 2, it is desirable to form the glass guide portions so as to face each other at the opening edges of the pair of side wall portions at a position corresponding to the opening window portion.
[0009]
In addition, in order to receive the water flowing down from the lower running water guide at the bottom wall portion of the sash body as described above with the upper running water guide that is positioned below, the opening window portion as described in claim 3 As a relative positional relationship between the lower flow guide and the upper flow guide that will be positioned above and below the two, the flow guides overlap each other in the vertical direction when the lower sash is normally attached to the automobile door. It is desirable.
[0010]
And as described in claim 4, the lower end portion of the bridge bottom wall portion is bent toward the inside of the channel-shaped space to form a lower running water guide, and the upper end portion of the bridge bottom wall portion is set to the channel-shaped space. Folding outwards to form upper running water guides, and each running water guide has a wedge shape that gradually decreases in thickness toward its tip, in order to prevent water from entering the back of each running water guide It is effective in.
[0011]
Further, as described in claim 5, the shape of the guide surface of the lower running water guide is such that the water flow is directed downward toward the inner corner formed by the side walls on both sides. It is desirable to promote the flow down, and as described in claim 6, it is more desirable that a bead-shaped guide continuous to the lower flow guide is formed on the side wall portion.
[0012]
Therefore, in the inventions according to claims 1 to 6, even if the lower sash has a substantially open bottom wall structure, the water that has once flowed out of the channel-shaped space from the lower running guide is received by the upper running guide to receive the bridge bottom. By flowing through the wall and repeating this flow cycle several times, a continuous water flow channel is secured from the upper end to the lower end of the lower sash, and water is dripped or dropped from the middle of the lower sash as before. For example, it becomes possible to protect a door lock actuator or the like disposed close to the lower sash from being wetted.
[0013]
In particular, as described in claim 5, when water is directed to the inner corner formed by the lower running water guide and the side wall portion, it becomes easier to ensure the continuity of the water flow and the drainage performance is further improved. In addition, when a bead-shaped guide continuous to the lower running water guide is formed as described in claim 6, water flows through the bead-shaped guide in a portion corresponding to the bridge bottom wall portion. Compared with the case where water drops dripped from the lower running water guide are received by the upper running water guide, this is effective in preventing the occurrence of splashes.
[0014]
The invention according to claim 7 is a resin-made lower sash that is disposed inside an automobile door and guides and supports the door glass so as to be movable up and down, and a pair of side wall portions facing each other in a cross-sectional channel-shaped sash body A glass guide part protruding inward of the channel-shaped space is formed at predetermined intervals along the longitudinal direction at the opening edge of the sash body, and the sash body has a bottom wall part that is continuous in the longitudinal direction as the bottom wall surface. The opening windows are staggered so as to be staggered along the longitudinal direction while maintaining the dam, and a dam bead is formed around each opening window to surround the window space. Among them, a portion other than the opening window portion is a continuous water channel in the longitudinal direction.
[0015]
In this case, for the same reason as in claim 2, a glass guide portion is formed at the opening edge of each side wall portion at a position corresponding to the opening window portion as described in claim 8, and the glass on both side wall portions is formed. It is desirable that the guide portions are staggered so that they are staggered.
[0016]
In addition, as described in claim 9, the dam bead on the lower end side of each opening window is locally cut to open the window space to the flow channel side, while the lower end edge of each opening window is channeled It is good also as a structure which formed the lower flowing water guide by bend | folding to the outward side of a shape space.
[0017]
Therefore, in the inventions according to claims 7 to 9, each opening window portion is isolated by the dam bead, so that a continuous water channel is secured from the upper end to the lower end of the lower sash with the bottom wall portion.
[0018]
【The invention's effect】
According to invention of Claim 1, 2, even if it is a cross-section channel-shaped lower sash of what is called an open bottom wall structure, the water leak from the middle of a lower sash is prevented beforehand, and the function as a flowing water channel is exhibited. Therefore, for example, a door lock actuator disposed close to the lower sash can be sufficiently protected from getting wet.
[0019]
In particular, according to the third aspect of the present invention, since the lower running water guide and the upper running water guide overlap each other in the vertical direction, the upper running water guide reliably receives water dripped from the lower running water guide. It is possible to prevent water leakage from the lower sash more reliably.
[0020]
According to the invention described in claim 4, since each of the bent lower flow guide and the upper flow guide has a wedge shape, water drainage at each flow guide is improved, and the flow guide to the back side of the flow guide is improved. If the water wraps around, it has the effect of preventing water leakage.
[0021]
According to the fifth aspect of the present invention, the guide surface of the lower running water guide is designed to direct the flow of water toward the inner corner formed by the side wall, thereby ensuring the continuity of the flow of water. As a result, the drainage performance is improved.
[0022]
According to the sixth aspect of the present invention, the bead-shaped guide that is continuous with the lower running water guide is formed on the side wall, so that the water flowing from the lower running water guide to the upper running water guide side is transmitted through the bead-shaped guide. Since it flows, compared with the case where water drops from the lower running water guide to the upper running water guide side, there is no occurrence of splashing, and there is an effect that it is possible to prevent water leakage caused by the occurrence of the splashing.
[0023]
According to the seventh and eighth aspects of the invention, the continuous flow path from the upper end to the lower end is secured by effectively utilizing the continuity of the bottom wall portion of the sash body in which the opening windows are formed in a staggered pattern. Therefore, the same effect as in claim 1 can be obtained, and in particular, since the bottom wall portion itself is continuous, there is an advantage that water leakage from the middle of the lower sash can be prevented more reliably.
[0024]
According to the ninth aspect of the present invention, since the dam bead and the lower running water guide are used in combination, even if the water wraps around the back side of the lower sash, the water is collected by the lower running water guide. Thus, it is possible to return to the channel-shaped space side, and there is an advantage that water leakage from the middle of the lower sash can be prevented more reliably.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
FIGS. 1 to 5 are views showing a preferred embodiment of the present invention. As shown in FIG. 1, an example of a lower sash 2 disposed in the rear side of an automobile front door 1 is shown. Yes.
[0026]
As shown in FIG. 2, the lower sash 2 has an overall shape including a sash body 3 having a substantially channel cross section, a box-shaped socket portion 4 at its upper end, and a mounting bracket portion 5 at its lower end, such as polyacetal (POM). It is integrally molded with a resin material. The lower sash 2 is in a normally assembled state with respect to the front door 1 with a rearward tilting posture as shown in FIG. 1, the upper socket portion 4 is fitted and fixed to an upper sash (not shown), and the mounting bracket portion 5 is, for example, a door inner Screwed to the panel. The door glass is guided and supported so as to be movable up and down together with a lower sash on the front side (not shown).
[0027]
The sash body 3 has a plurality of discontinuous bridge bottom wall portions 6 and the left and right side wall portions 7 and 7 connected to each other, and a rectangular window-shaped opening portion 8 and a bridge bottom wall portion at the bottom wall equivalent portion. 6 are alternately arranged in the longitudinal direction. And in the part corresponded to each window-like opening part 8 among both side wall parts 7 and 7, the opening edge part is bulged and formed in an arc shape so as to face each other inward, and contacts the door glass. A glass guide portion 9 is formed.
[0028]
As shown in FIGS. 2 and 3, the upper end of each bridge bottom wall 6 is bent so as to face the outside of the channel-shaped space to form an upper running water guide 10. The lower end portion of the portion 6 is bent so as to face the inside of the channel-shaped space to form the lower running water guide 11. The upper running water guide 10 and the lower running water guide 11 prevent the water flowing down from the upper end side of the lower sash 2 from flowing out of the lower sash 2 from the opening window 8 and dripping the water from the lower running water guide 11 to As shown in FIGS. 2 and 3, it is set to be received by the lower upper water flow guide 10, and in order to reliably receive water dripped from the lower water flow guide 11 by the lower upper water flow guide 10, as shown in FIGS. As the relative positional relationship between the running water guide 11 and the upper running water guide 10 below the running water guide 11, they are overlapped by a predetermined amount α in the vertical direction. Then, in order to improve the water drainage while preventing the water from flowing from the front end to the back side of both the upper flow guide 10 and the lower flow guide 11, the thickness gradually increases from the root of each guide toward the front end side. Further, the lower running water guide 11 is formed in a wedge shape so as to be smaller. In order to collect the water flowing down from the guiding surface 11a at the inner corners formed by the side wall portions 7 and 7 on both sides, The central portion is smoothly bulged in an arc shape upward, and the bulging amount is set to be larger as it goes downward and the bulging width as it goes downward. Therefore, when water flowing down at least the bottom wall portion 6 of the bridge reaches the guide surface 11a of the lower water flow guide 11 at the lower end portion, the water is distributed to the left and right by the swelled guide surface 11a and gradually the side wall portions 7 and 7 on both sides. It is set so that it can be collected on the inner corner side.
[0029]
Here, in order to cause the guide surface 11a of the lower running water guide 11 to perform the same function as described above, for example, as shown in FIG. 4, the guide surface 11b itself is shaped like a triangle or is shown in FIG. As described above, the bead 11d may be formed in a V shape on the flat guide surface 11c (however, the bead-shaped guide 12 similar to FIG. 2 is not shown in FIGS. 4 and 5).
[0030]
On the other hand, with respect to the side wall portions 7 and 7 on both sides, as shown in FIGS. 2 and 3, the inner corner portion or the lower flowing water starts from the position where the inner corner portion formed by the lower flowing water guide 11 and the side wall portions 7 and 7 ends. A bead-shaped guide 12 having a minimum cross-sectional shape that is continuous with the guide surface 11a of the guide 11 is formed (however, the bead-shaped guide 12 is not shown in FIG. 1 to avoid complication of the drawing). This bead-shaped guide 12 is set so that the water collected on the inner corner side formed by the side wall portions 7 and 7 on both sides by the bulging guide surface 11a is transferred to the upper flowing water guide 10 side below it. Therefore, as shown in FIGS. 2 and 3, the end position of the bead-shaped guide 12 exceeds the upper flow guide 10 below by a predetermined amount in the vertical direction as shown in FIGS. It is desirable to make it the lapped position.
[0031]
Therefore, according to the structure of the lower sash 2 as described above, the water that flows down from the upper side using the lower sash 2 itself as a flowing water channel is dropped from the lower flowing water guide 11 at the lower end of the bridge bottom wall portion 6 and is below the bridge bottom. It is received by the upper running water guide 10 in the wall part 6, and is guided to the lower part of the lower sash 2 and drained by repeating such a behavior several times. More specifically, as shown in FIGS. 2 and 3, the water flowing down the bridge bottom wall portion 6 is positively applied to the inner corner portion formed by the side wall portions 7 and 7 on both sides thereof by the guide surface 11 a of the lower running water guide 11. Therefore, in addition to the direct dripping of water from the lower running water guide 11 to the upper running water guide 10, a large amount of water is beaded from the inner corner formed by the guide surface 11 a and the side walls 7, 7. It is guided to the lower bridge bottom wall portion 6 through the guide 12. Therefore, the lower sash 2, particularly the bridge bottom wall portion 6 sufficiently functions as the flow channel D, and water does not leak from the open window portion 8 existing between the bridge bottom wall portions 6, 6. As shown in FIG. 10, the door lock actuator 31 disposed close to the lower sash 2 can be protected from water wetting. In addition, since the lower running water guide 11 is bent so as to face the inside of the channel-shaped space, even if the door glass falls down, the end face of the door glass is formed on the bridge bottom wall portion 6 of the sash body 3. There is no such thing as being caught by direct contact.
[0032]
6 and 7 are diagrams showing a second embodiment of the present invention. However, parts that are the same as those in the first embodiment shown in FIGS.
[0033]
The lower sash 22 of the second embodiment is formed by alternately projecting the glass guide portions 9 curved in an arc shape on the side wall portions 7 and 7 on both sides of the sash body 23 having a channel cross section so as to form a so-called staggered arrangement. On the other hand, the bottom wall portion 16 is formed by alternately forming the opening window portions 18 offset to either the left or right so as to be arranged in the same manner as the glass guide portions 9. Thereby, the continuity in the longitudinal direction of the bottom wall portion 16 itself is secured in advance. Further, a dam bead 13 that is one step higher is provided on the periphery of each opening window 18 so as to surround the opening space, and a portion other than the opening window 18 in the bottom wall 16 functions as the flow channel D. It is set to do.
[0034]
Therefore, according to the second embodiment, even if the opening window portion 18 is formed in the lower sash 22, the bottom wall portion 16 itself has continuity in the vertical direction in advance so that the flow channel D is secured. As shown in FIG. 7, water flows down along the bottom wall portion 16 while meandering. Accordingly, similarly to the first embodiment, water leakage from the middle of the lower sash 22 and water wetting of the door lock actuator 31 (see FIG. 10) due to the leakage can be prevented.
[0035]
Here, as shown in FIGS. 7 and 8, a meandering groove 25 along the water flow W is formed in advance in the bottom wall portion 16 where the dam bead 13 is formed so as not to interfere with the dam bead 13. Since water flows around the groove 25, there is an advantage that the flowing water performance or drainage performance is further improved.
[0036]
FIG. 9 shows a third embodiment of the present invention, and is provided so as to surround each window-like opening 18 as is clear when compared with the second embodiment shown in FIGS. 2, the downstream side of the dam bead 13 is partially cut off and opened to the flow channel D side, while the lower edge portion of the window-like opening 18 corresponding to the dam bead deficient portion is bent outside the channel-shaped space, A lower running water guide 20 similar to that shown in FIG.
[0037]
According to the third embodiment, the same effect as that of the second embodiment can be obtained by the presence of the dam bead 13, and there is a lower running water guide 20, so that the back surface side of the bottom wall portion 16 should be watered by any chance. When the water flows, there is an advantage that the water can be received by the lower flow guide 20 and guided to the original flow channel D side.
[Brief description of the drawings]
FIG. 1 is a perspective view of a lower sash alone showing a first embodiment of the present invention.
FIG. 2 is an enlarged perspective view of a main part of FIG.
3 is a vertical cross-sectional view of the main part of FIG.
4 is a perspective view showing a modification of FIG.
5 is a perspective view showing another modification of FIG. 2. FIG.
FIG. 6 is a perspective view of a lower sash alone showing a second embodiment of the present invention.
7 is a front view of the main part of FIG. 6. FIG.
8 is a view showing a modification of FIG. 7, and a cross-sectional view taken along line AA of FIG.
FIG. 9 is a perspective view showing a main part of a third embodiment of the present invention.
FIG. 10 is an explanatory diagram of a front door of an automobile.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Front door 2 ... Lower sash 3 ... Sash main body 6 ... Bridge bottom wall part 7 ... Side wall part 8 ... Window-shaped opening part 9 ... Glass guide part 10 ... Upper part flowing water guide 11 ... Lower part flowing water guide 11a ... Guide surface 11b ... Guide surface 11c ... Guide surface 12 ... Bead-shaped guide 13 ... Dam bead 16 ... Bottom wall 18 ... Window-shaped opening 20 ... Lower water flow guide 22 ... Lower sash 23 ... Sash body D ... Flow channel

Claims

A resin lower sash that is disposed inside an automobile door and guides and supports the door glass to be movable up and down,
At the opening edge of the pair of side wall portions facing each other in the channel-shaped sash body, a glass guide portion protruding inward of the channel-shaped space is formed at predetermined intervals along the longitudinal direction, and
In the portion corresponding to the bottom of the sash body, a bridge bottom wall portion and an opening window portion that connect the side wall portions are alternately formed along the longitudinal direction,
A lower running water guide that faces the inside of the channel-shaped space is formed at the lower end of the bridge bottom wall, and an upper running water guide that faces the outside of the channel-like space is formed at the upper end of the bridge bottom wall. Lower sash structure for automobile doors.

2. The lower sash structure for an automobile door according to claim 1, wherein a glass guide portion is formed at the opening edge of the pair of side wall portions so as to face each other at a position corresponding to the opening window portion.

As the relative positional relationship between the lower running guide and the upper running guide that are located above and below the opening window, both running guides overlap each other in the vertical direction when the lower sash is normally attached to the automobile door. The lower sash structure for an automobile door according to claim 1 or 2, wherein the lower sash structure for an automobile door is set.

Bending the lower end of the bottom wall of the bridge toward the inside of the channel-shaped space makes it a lower running water guide, and bending the upper end of the bottom wall of the bridge toward the outside of the channel-like space makes the upper running water guide age,
4. The lower sash structure for an automobile door according to claim 3, wherein each running water guide has a wedge shape in which the wall thickness gradually decreases toward the tip thereof.

5. The automobile door according to claim 4, wherein the shape of the guide surface of the lower running water guide is such that the water flow is directed downward toward the inner corner formed by the side walls on both sides. Lower sash structure.

6. The lower sash structure for an automobile door according to claim 5, wherein a bead-shaped guide that is continuous with the lower running water guide is formed on the side wall.

A resin lower sash that is disposed inside an automobile door and guides and supports the door glass to be movable up and down,
At the opening edge of the pair of side wall portions facing each other in the cross-sectional channel-shaped sash body, a glass guide portion protruding inward of the channel-shaped space is formed at predetermined intervals along the longitudinal direction,
In the bottom wall of the sash body, the opening windows are formed in a staggered pattern so as to be staggered along the longitudinal direction while maintaining continuity in the longitudinal direction as the bottom wall,
A dam bead surrounding the window space is formed around each open window,
A lower sash structure for an automobile door, wherein a portion other than the opening window portion in the bottom wall portion is a continuous water channel in the longitudinal direction.

A glass guide part is formed at the opening edge of each side wall part at a position corresponding to the opening window part, and the arrangement of the glass guide parts on both side wall parts is staggered to be staggered. The lower sash structure for an automobile door according to claim 7.

While the dam bead on the lower end side of each opening window is locally excised to open the window space to the flow channel side,
The lower sash structure for an automobile door according to claim 7 or 8, wherein a lower running water guide is formed by bending a lower end edge of each opening window portion outward of the channel-shaped space.