JP4026755B2

JP4026755B2 - Automotive door weatherstrip

Info

Publication number: JP4026755B2
Application number: JP2002270470A
Authority: JP
Inventors: 岳大根
Original assignee: Nishikawa Rubber Co Ltd
Current assignee: Nishikawa Rubber Co Ltd
Priority date: 2002-09-17
Filing date: 2002-09-17
Publication date: 2007-12-26
Anticipated expiration: 2022-09-17
Also published as: JP2004106661A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のドア周りに沿って取付けられ、ドア閉時にドア開口縁部に弾接してドアとボディとの隙間をシールする自動車用ドアウェザーストリップに関するものである。
【０００２】
【従来の技術】
図３（ａ）に示すように、自動車のドアＤの周りにはドア閉時にドアＤとそのドアＤの開口縁部Ｂとなるボディとの隙間をシールするドアウェザーストリップ２０が取付けられている。
このようなドアウェザーストリップ２０は、取付基部２１の車内側と車外側にそれぞれ一体成形された中空シール部２２と断面舌状のリップ部２３がドア開口縁部Ｂに弾接することによって隙間をシールするようになっている。また、リップ部２３の付け根部の車外側には、ドアＤの外周端縁の立設部Ｄａ、すなわちドアサッシュのフランジ部の車内側に弾接して水の侵入を防止する背面リップ部２４が突設されている。
【０００３】
このうち特にリップ部２３は水密性、遮音性向上の点から剛性を上げる必要がある。
しかしながら、リップ部２３の剛性を上げていった場合、例えば高圧洗車時等に高圧水がリップ部２３に直接かかると、図３（ｂ）に示すように、リップ部２３が車内側に押し込まれて変形し、その変形によってリップ部２３の付け根部に形成された背面リップ部２４は車内側に引張られる。その結果、背面リップ部２４がドアＤの外周端縁の立設部Ｄａから離れて背面シール切れを起こし、高圧水がドアＤの外周端縁の立設部Ｄａとそれから離れた背面シール部２４との間からドアＤの外周端縁の立設部Ｄａの下部に形成されたドアサッシュの傾斜部Ｄｂを伝わり取付基部２１の底部から車内側に侵入するため、十分なシール機能が発揮されないという問題があった。
【０００４】
そこで、本発明者はリップ部に中空部を設けることにより背面リップ部のシール切れを防止することを考えた。
【０００５】
このように、中空シール部の車外側に形成されたリップ部に中空部を設けた形状のドアウェザーストリップは知られている（例えば、特許文献１，特許文献２参照。）。
【０００６】
【特許文献１】
特開平１０−２８７１３１号公報（図２）
【特許文献２】
特開平１１−９９８３０号公報（図２）
【０００７】
特許文献１，２に相当するものを、本願では図４，図５に示した。
図４に示すように、特許文献１に記載のドアウェザーストリップ３０は、取付基部３１の車外側に形成されたリップ部３３の先端に中実リップ部３３ａが形成され、ドアＤ閉時には、その中実リップ部３３ａがドア開口縁部Ｂの外表面に当接して閉じられた空間３４を形成し、かつリップ部３３を断面略三角形状をなす中空状に形成したことによりリップ部３３の剛性が高くなっている。そのため、リップ部３３と中空部３２で閉じられた空間３４が車両の高速走行時に吸いだされにくくなる。これにより草笛音の発生を改善するものであるので、リップ部に中空部を設けることにより高圧水に対処して背面リップ部のシール切れを防止することを目的にするものではない。
【０００８】
すなわち、特許文献１では洗車等による高圧水がリップ部３３にかかる点については何ら開示されていない。図４に示すように、ドア開口縁部Ｂに対する中実リップ部３３ａのかかりしろＳが十分ある場合には、高圧水がリップ部３３にかかっても特に問題はないが、ドアウェザーストリップ３０自体の形状のバラツキ，その取付状態のバラツキ，あるいはドアＤとドア開口縁部Ｂとの隙間による面間のバラツキ等により、中実リップ部３３ａのかかりしろＳが不十分になった場合には、高圧水に耐えきれず中実リップ部３３ａが車内側に入り込みシール性が不十分となってしまう。
また、水がドアＤの外周端縁の立設部Ｄａと突起部３５との間からドアＤの外周端縁の立設部Ｄａの下部に形成されたドアサッシュの傾斜部Ｄｂを伝わり取付基部３１の底部から車内側に侵入するおそれもある。
さらに、中実リップ部３３ａのように一枚の壁が長く設定されているものでは遮音性も不十分である。
【０００９】
一方、図５に示すように、特許文献２に記載のドアウェザーストリップ４０によれば、取付基部４１の車外側に形成されたリップ部４３の車内側壁部４４は、ドアＤ閉時にドア開口縁部Ｂに当接して車外側に倒れ変形するとともに、車外側壁部４５は凸形状に屈曲してドアＤの周縁に圧接するように変形するものであり、しかも車内側壁部４４は厚肉に形成されているので、高圧水については何ら記載はないものの、高圧水には対処することができると考えられる。
しかしながら、車外側壁部４５を凸形状に屈曲させるものであるので、図５に示すように、ドアＤの周縁から車外側壁部４５がはみ出し、フラッシュサーフェース化の点で問題があり、見栄えが悪く、高速走行時の抵抗にもなる。
またドアＤとドア開口縁部Ｂとの隙間による面間のバラツキ等により、面間が狭くなった場合には、ドア閉じ性が極端に悪化してしまう。
【００１０】
【発明が解決しようとする課題】
そこで、本発明の目的とするところは、ドアとドア開口縁部との隙間のバラツキによる問題に対応できるとともに、取付基部に一体成形されたリップ部の変形により背面リップ部に及ぼす影響を最小限に抑えて背面リップ部のシール切れを防止しうる自動車用ドアウェザーストリップを提供することにある。
またフラッシュサーフェース化を実現して特に見栄えを悪くすることもなく、その上、遮音性にも優れる自動車用ドアウェザーストリップを提供することにある。
【００１１】
【課題を解決するための手段】
上記の目的を達成するために、本発明の請求項１に記載の自動車用ドアウェザーストリップ（１０）は、自動車のドア（Ｄ）外周縁部に沿って取付けられる取付基部（１１）と、その取付基部（１１）の車内側に一体成形され、前記ドア（Ｄ）閉時にドア開口縁部（Ｂ）に弾接してドア（Ｄ）外周縁部とドア開口縁部（Ｂ）との隙間をシールする中空シール部（１２）と、前記取付基部（１１）の車外側に一体成形され、前記ドア（Ｄ）閉時にドア開口縁部（Ｂ）に弾接して前記中空シール部（１２）とともにドア（Ｄ）外周縁部とドア開口縁部（Ｂ）との隙間をシールするリップ部（１３）と、および、前記リップ部（１３）の付け根部の車外側に突設され、前記ドア（Ｄ）外周縁部の車内側に弾接する背面リップ部（１９）と、を備えるものにおいて、
前記リップ部（１３）を、前記取付基部（１１）から略垂直方向に立設された第一車内側壁部（１５ａ）と、該第一車内側壁部（１５ａ）の先端を折れ点または屈曲点（Ｘ）とするように一端が連結されかつ他端が車外側に延設された第二車内側壁部（１５ｂ）と、該第二車内側壁部（１５ｂ）の他端に一端が連結されかつ他端が前記第一車内側壁部（１５ａ）の付け根部の車外側に連結された車外側壁部（１４）とから構成し、その内部に中空部（１６）を設けるとともに、前記第二車内側壁部（１５ｂ）を前記車外側壁部（１４）よりも厚肉にし、
前記ドア（Ｄ）閉時には、前記リップ部（１３）の先端部をドア開口縁部（Ｂ）の外表面（ｍ）に沿うかあるいは外表面（ｍ）よりも車内側でドア開口縁部（Ｂ）に弾接させ、洗車等による高圧水がリップ部（１３）にかかると、リップ部（１３）全体を車内側に湾曲させるとともに、前記第二車内側壁部（１５ｂ）を前記折れ点または屈曲点（Ｘ）を介して第一車内側壁部（１５ａ）に対してドア（Ｄ）閉時よりも大きく折曲または屈曲させ、リップ部（１３）の先端部をドア（Ｄ）閉時よりもドア開口縁部（Ｂ）の車内側の部位でしかも車外側に屈曲または湾曲した状態で弾接させるようにしたことを特徴とする。
【００１２】
また請求項２に記載の発明は、自動車のドア（Ｄ）外周縁部に沿って取付けられる取付基部（１１）と、その取付基部（１１）の車内側に一体成形され、前記ドア（Ｄ）閉時にドア開口縁部（Ｂ）に弾接してドア（Ｄ）外周縁部とドア開口縁部（Ｂ）との隙間をシールする中空シール部（１２）と、前記取付基部（１１）の車外側に一体成形され、前記ドア（Ｄ）閉時にドア開口縁部（Ｂ）に弾接して前記中空シール部（１２）とともにドア（Ｄ）外周縁部とドア開口縁部（Ｂ）との隙間をシールするリップ部（１３）と、および、前記リップ部（１３）の付け根部の車外側に突設され、前記ドア（Ｄ）外周縁部の車内側に弾接する背面リップ部（１９）と、を備えるものにおいて、
前記リップ部（１３）を、前記取付基部（１１）から略垂直方向に立設された第一車内側壁部（１５ａ）と、該第一車内側壁部（１５ａ）の先端を折れ点または屈曲点（Ｘ）とするように一端が連結されかつ他端が車外側に延設された第二車内側壁部（１５ｂ）と、該第二車内側壁部（１５ｂ）の他端に一端が連結されかつ他端が前記第一車内側壁部（１５ａ）の付け根部の車外側に連結された車外側壁部（１４）とから構成し、その内部に中空部（１６）を設けるとともに、前記第二車内側壁部（１５ｂ）を前記車外側壁部（１４）よりも厚肉にしかつ前記第一車内側壁部（１５ａ）を前記第二車内側壁部（１５ｂ）よりもさらに厚肉にし、
前記ドア（Ｄ）閉時には、前記リップ部（１３）の先端部をドア開口縁部（Ｂ）の外表面（ｍ）に沿うかあるいは外表面（ｍ）よりも車内側でドア開口縁部（Ｂ）に弾接させ、洗車等による高圧水がリップ部（１３）にかかると、リップ部（１３）全体を車内側に湾曲させるとともに、前記第二車内側壁部（１５ｂ）を前記折れ点または屈曲点（Ｘ）を介して第一車内側壁部（１５ａ）に対してドア（Ｄ）閉時よりも大きく折曲または屈曲させ、リップ部（１３）の先端部をドア（Ｄ）閉時よりもドア開口縁部（Ｂ）の車内側の部位でしかも車外側に屈曲または湾曲した状態で弾接させるようにしたことを特徴とする。
【００１３】
さらに請求項３に記載の発明は、前記高圧水がリップ部（１３）にかかった場合、前記第一車内側壁部（１５ａ）を前記中空シール部（１２）に弾接させ、前記リップ部（１３）の変形を抑制して前記背面リップ部（１９）の浮き上がりを防止したことを特徴とする。
【００２１】
なお、括弧内の記号は、図面および後述する発明の実施の形態に記載された対応要素又は対応事項を示す。
【００２２】
本発明の自動車用ドアウェザーストリップによれば、中空シール部とともにドア外周縁部とドア開口縁部との隙間をシールするリップ部を、取付基部から略垂直方向に立設された第一車内側壁部と、それに対して折曲または屈曲するように連結された第二車内側壁部と、車外側壁部とからなり、内部に中空部を設けるようにしたので、ドア閉時に、第一車内側壁部，第二車内側壁部は折れ点または屈曲点を中心に変形し、リップ部は車内側に向けて湾曲するので車外側からはみ出すことはなく、フラッシュサーフェース化が実現できる。
これによれば、外観上見栄えを特に悪化することなく、しかも高速走行時に空気抵抗を特に大きくすることもない。
【００２３】
ドア閉時に、洗車等による高圧水がリップ部にかかると、リップ部全体が車内側に湾曲し、第二車内側壁部は折れ点または屈曲点を介して第一車内側壁部に対して単にドア閉時のときよりも大きく折曲または屈曲し、リップ部の先端部はドア閉時のときよりもドア開口縁部の車内側の部位でしかも車外側に屈曲または湾曲した状態で弾接する。
このように、高圧水がリップ部にかかると、第一車内側壁部，第一車内側壁部は折れ点または屈曲点を中心に強制的に湾曲変形されるとともに、車外側壁部が中空部を介して湾曲変形するので、従来例（図３）で示したように、リップ部全体が同時に変形しその力が背面リップ部を車内側に引張るものと異なり、背面リップ部にリップ部の湾曲変形による影響を、軽減した状態で伝える。
よって、その分、背面リップ部の浮き上がりによるシール切れを防止することができる。
したがって、リップ部の剛性を材質を変えて従来例のものと同じにした場合に、リップ部が高圧水によって車内側に湾曲変形したときに背面リップ部に及ぼす影響を従来例の場合よりも格段と軽減することができるので、背面リップ部のシール切れを効果的に防止することができる。
【００２４】
また本発明によれば、面間のバラツキ等によりドア外周縁部とドア開口縁部との隙間が広くなり、リップ部のかかりしろが不十分になったとしても、リップ部はドア開口縁部の車内側に入り込んでシール可能であるので、シール性が特に劣ることはない。
また、逆にドア外周縁部とドア開口縁部との隙間が狭くなった場合においても、リップ部は中空であるのでドア閉時にリップ部が車外側にはみ出すことは、中実のリップ部と比較して軽減することができる。よって、ドア閉じ性の悪化や見栄えの悪化を防止することができる。
【００２５】
その上、リップ部は、中空部が設けられた第一，第二車内側壁部と車外側壁部による中空二重構造になっているので、従来例で示したように、断面舌状のリップ部一枚のものと比較して、遮音効果に優れる。
【００２６】
また、特に高圧水がリップ部にかかった場合、第一車内側壁部を中空シール部に弾接させるようにすることによって、それ以上、リップ部が車内側に押し込まれることがなくなり、リップ部は高圧水に耐えうるので、背面リップ部が浮き上がることを一層防止することができる。
また、第二車内側壁部を車外側壁部よりも厚肉すると、薄肉の車外側壁部の湾曲変形により背面リップ部に与える影響がより少なくなり、それだけ背面リップ部の浮き上がりを防止することができる。
また、第二車内側壁部や車外側壁部を、ドア閉時ではない通常の取付状態のときに車外側に向けて膨出湾曲させることによりリップ部の剛性を向上させることができる。
【００２７】
さらにドア閉時に車外側壁部がドア外周縁部に形成した立設部に接する点の高さを、第一車内側壁部と第二車内側壁部との間に設けられた折れ点または屈曲点の高さと略同じにするかそれよりも低く設定することにより、リップ部は車内側に向けて確実に湾曲変形するので車外側へのはみ出しをさらに一層抑えることができる。
またリップ部の付け根部を先端部よりも厚肉にしたり、あるいは、背面リップ部を、ドア外周縁部に形成した立設部の下部から車内側下向きに傾斜して形成された傾斜部に弾接する位置に設けることにより、背面リップ部の浮き上がりを効果的に防止することができる。
またリップ部に形成された中空部の先端を、そのリップ部の先端部の至端付近まで形成することにより、遮音効果はより一層高められる。
【００２８】
【発明の実施の形態】
図１及び図２を参照して、本発明の実施形態に係る自動車用ドアウェザーストリップ１０について説明する。図１はドアＤに取付けられた自動車用ドアウェザーストリップ１０の断面を示し、図２（ａ）は図１に示す自動車用ドアウェザーストリップ１０がドア開口縁部Ｂに弾接して変形した様子の断面を示し、図２（ｂ）はさらに洗車等の高圧水がかかった様子の断面を示している。
【００２９】
本発明の実施形態に係る自動車用ドアウェザーストリップ１０は、図１に示すように、主に、自動車のドアＤ外周縁部に沿って取付けられる取付基部１１と、その取付基部１１の車内側に一体成形され、ドアＤ閉時にドア開口縁部Ｂに弾接してドアＤ外周縁部とドア開口縁部Ｂとの隙間をシールする中空シール部１２と、取付基部１１の車外側に一体成形され、ドアＤ閉時にドア開口縁部Ｂに弾接して中空シール部１２とともにドアＤ外周縁部とドア開口縁部Ｂとの隙間をシールするリップ部１３と、および、リップ部１３の付け根部の車外側に突設され、ドア外周縁部の車内側に弾接する背面リップ部１９を備えている。
【００３０】
リップ部１３は、車外側壁部１４と車内側壁部１５とで形成され、内部に中空部１６が設けられている。車内側壁部１５はさらに第一車内側壁部１５ａと第二車内側壁部１５ｂとからなっている。より詳細には、第一車内側壁部１５ａは取付基部１１から略垂直方向に立設され、第一車内側壁部１５ａの先端に、その先端を折れ点または屈曲点Ｘとするように第二車内側壁部１５ｂの一端が連結されている。第二車内側壁部１５ｂの他端は車外側に向けて延設されている。そして、車外側壁部１４の一端は、第二車内側壁部１５ｂの他端に連結され、他端は取付基部１１において第一車内側壁部１５ａの付け根部の車外側に連結されている。
【００３１】
車外側壁部１４は車外側に向けて膨出湾曲し、第二車内側壁部１５ｂも車外側に向けて膨出湾曲している。なお、第二車内側壁部１５ｂを直線的な形状にさせてもよい。
また第二車内側壁部１５ｂは、車外側壁部１４よりも厚肉であり、第一車内側壁部１５ａは、第二車内側壁部１５ｂよりもさらに厚肉にしてある。さらにリップ部１３の付け根部の肉厚Ｗはその先端部よりも厚肉にしてあり、リップ部１３にかかる力が背面リップ部１９に伝わることを軽減している。
また車外側壁部１４は少なくともドア閉時には、ドア外周縁部に形成したフランジたる立設部Ｄａに接するようにしてあり（ドア閉時でない通常的にも接するようにしてもよい。図１では接した状態を示している。）、その接点Ｙの高さを、第一車内側壁部１５ａと第二車内側壁部１５ｂとの間に設けられた折れ点または屈曲点Ｘの高さと略同じにするかそれよりも低く設定している。これにより、リップ部１３が車内側に湾曲したときにリップ部１３の一部が車外側にはみ出してフラッシュサーフェース化の妨げになることを防止している。
【００３２】
中空部１６の先端１６ａは先細でしかも取付基部１１側の後端１６ｂは丸みをもった断面略水滴状の形状をしている。
このように中空部１６が形成されたリップ部１３は、従来例（図３）で示したような断面舌状のリップ部一枚のものと比較して、遮音効果に優れる。
特に中空部１６の先端１６ａは、リップ部１３の先端部の至端１８付近まで形成してあるので、中空二重構造による遮音効果をより一層高めている。
またリップ部１３の先端部がドア閉時にドア開口縁部Ｂに確実に緩衝するように十分なかかりしろＳが確保されている。
【００３３】
また背面リップ部１９は、ドア外周縁部に形成した立設部Ｄａの下部から車内側下向きに傾斜して形成されたドアサッシュの傾斜部Ｄｂに弾接する位置に設けてあり、立設部Ｄａの車内側に弾接させる場合と比して背面リップ部１９の浮き上がりを有効的に防止している。
【００３４】
そして、図２（ａ）に示すように、ドアＤの閉時には、リップ部１３の先端部がドア開口縁部Ｂの外表面ｍに沿うかあるいは外表面ｍよりも車内側でドア開口縁部Ｂに弾接する。その変形により、ドア外周縁部に形成した立設部Ｄａの上端に接する車外側壁部１４の部位Ｙが折れ点または屈曲点となって車外側壁部１４は車外側に湾曲した状態から車内側に湾曲した状態になるように変形する。そして、第一車内側壁部１５ａと第二車内側壁部１５ｂはその間に設けられた折れ点または屈曲点Ｘを中心として若干変形する。その結果、リップ部１３は車内側に向けて湾曲するので車外側からはみ出すことはなく、フラッシュサーフェース化が実現できる。これによれば、外観上見栄えを特に悪化することなく、しかも高速走行時に空気抵抗を特に大きくすることもない。
【００３５】
この状態で、図２（ｂ）で示すように、洗車等による高圧水がリップ部１３にかかると、リップ部１３全体が車内側に湾曲し、第二車内側壁部１５ｂは折れ点または屈曲点Ｘを介して第一車内側壁部１５ａに対してドア閉時のときよりも大きく折曲または屈曲し、リップ部１３の先端部はドア閉時のときよりもドア開口縁部Ｂの車内側の部位でしかも車外側に屈曲または湾曲した状態で弾接するようになる。
このように、高圧水がリップ部１３にかかると、第一車内側壁部１５ａ，第一車内側壁部１５ｂは折れ点または屈曲点Ｘを中心に強制的に湾曲変形されるとともに、車外側壁部１４が中空部１６を介して湾曲変形するので、従来例（図３）で示したような断面舌状のリップ部一枚のもののように、リップ部を中実にした場合と比較して車外側壁部１４の付け根部に突設された背面リップ部１９にリップ部１３の湾曲変形による影響が直接伝わるのではなく、軽減された状態で背面リップ部１９に伝わる。よって、その分、背面リップ部１９の浮き上がりによるシール切れを防止することができる。
【００３６】
なお、高圧水がリップ部１３にかかった場合、第一車内側壁部１５ａの車内側表面を中空シール部１２の車外側表面に弾接させるようにし（図２（ｂ）では弾接してない状態を示した）、さらなるリップ部１３の変形を抑制することによって背面リップ部１９が浮き上がることを防止するようにしてもよい。
【００３７】
【発明の効果】
本発明の自動車用ドアウェザーストリップによれば、中空シール部とともにドア外周縁部とドア開口縁部との隙間をシールするリップ部を、取付基部から略垂直方向に立設された第一車内側壁部と、それに対して折曲または屈曲するように連結された第二車内側壁部と、車外側壁部とからなり、内部に中空部を設けるようにしたので、ドア閉時に、第一車内側壁部，第二車内側壁部は折れ点または屈曲点を中心に変形し、リップ部は車内側に向けて湾曲するので車外側からはみ出すことはなく、フラッシュサーフェース化が実現できる。
これによれば、外観上見栄えを特に悪化することなく、しかも高速走行時に空気抵抗を特に大きくすることもない。
【００３８】
またドア閉時に、洗車等による高圧水がリップ部にかかると、第一車内側壁部，第一車内側壁部は折れ点または屈曲点を中心に強制的に湾曲変形されるとともに、車外側壁部が中空部を介して湾曲変形するので、従来例（図３）で示したように、リップ部全体が同時に変形しその力が背面リップ部を車内側に引張るものと異なり、背面リップ部にリップ部の湾曲変形による影響を、軽減した状態で伝える。
よって、その分、背面リップ部の浮き上がりによるシール切れを防止することができる。
【００３９】
また本発明によれば、面間のバラツキ等によりドア外周縁部とドア開口縁部との隙間が広くなり、リップ部のかかりしろが不十分になったとしても、リップ部はドア開口縁部の車内側に入り込んでシール可能であるので、シール性が特に劣ることはない。
また、逆にドア外周縁部とドア開口縁部との隙間が狭くなった場合においても、リップ部は中空であるのでドア閉時にリップ部が車外側にはみ出すことは、中実のリップ部と比較して軽減することができる。よって、ドア閉じ性の悪化や見栄えの悪化を防止することができる。
【００４０】
その上、リップ部は、中空部が設けられた第一，第二車内側壁部と車外側壁部による中空二重構造になっているので、従来例で示したように、断面舌状のリップ部一枚のものと比較して、遮音効果に優れる。
【００４１】
また、特に高圧水がリップ部にかかった場合、第一車内側壁部を中空シール部に弾接させるようにすることによって、それ以上、リップ部が車内側に押し込まれることがなくなり、リップ部は高圧水に耐えうるので、背面リップ部が浮き上がることを一層防止することができる。また、第二車内側壁部を車外側壁部よりも厚肉すると、薄肉の車外側壁部の湾曲変形により背面リップ部に与える影響がより少なくなり、それだけ背面リップ部の浮き上がりを防止することができる。また、第二車内側壁部や車外側壁部を、ドア閉時ではない通常の取付状態のときに車外側に向けて膨出湾曲させることによりリップ部の剛性を向上させることができる。
【００４２】
さらにドア閉時に車外側壁部がドア外周縁部に形成した立設部に接する点の高さを、第一車内側壁部と第二車内側壁部との間に設けられた折れ点または屈曲点の高さと略同じにするかそれよりも低く設定することにより、リップ部は車内側に向けて確実に湾曲変形するので車外側へのはみ出しをさらに一層抑えることができる。またリップ部の付け根部を先端部よりも厚肉にしたり、あるいは、背面リップ部を、ドア外周縁部に形成した立設部の下部から車内側下向きに傾斜して形成された傾斜部に弾接する位置に設けることにより、背面リップ部の浮き上がりを効果的に防止することができる。またリップ部に形成された中空部の先端を、そのリップ部の先端部の至端付近まで形成することにより、遮音効果はより一層高められる。
【図面の簡単な説明】
【図１】本発明の実施形態に係る、自動車用ドアウェザーストリップを示す断面図である。
【図２】（ａ）は図１に示す自動車用ドアウェザーストリップがドア開口縁部に弾接した状態を示す断面図であり、（ｂ）はさらに高圧水がかかった状態を示す断面図である。
【図３】従来例に係る自動車用ドアウェザーストリップを示す断面図であり、（ａ）はドア開口縁部に弾接した状態を示し、（ｂ）はさらに高圧水がかかった状態を示す。
【図４】リップ部に中空部が形成されたドアウェザーストリップがドア開口縁部に弾接した状態を示す断面図である。
【図５】リップ部に中空部が形成された別のドアウェザーストリップがドア開口縁部に弾接した状態を示す断面図である。
【符号の説明】
１０自動車用ドアウェザーストリップ
１１取付基部
１２中空シール部
１３リップ部
１４車外側壁部
１５車内側壁部
１５ａ第一車内側壁部
１５ｂ第二車内側壁部
１６中空部
１６ａ先端
１６ｂ後端
１８リップ部の先端部の至端
１９背面リップ部
２０，３０，４０ドアウェザーストリップ
２１，３１，４１取付基部
２２，３２，４２中空シール部
２３，３３，４３リップ部
３３ａ中実リップ部
３４閉じられた空間
３５突起部
４４車内側壁部
４５車外側壁部
４６背面リップ部
Ｂドア開口縁部
Ｄドア
Ｄａ立設部
Ｄｂ傾斜部
ｍドア開口縁部の外表面
Ｓかかりしろ
Ｗリップ部の付け根部の肉厚
Ｘ，Ｙ折れ点または屈曲点[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door weather strip for an automobile that is attached along the periphery of an automobile door and seals a gap between the door and a body by elastic contact with a door opening edge when the door is closed.
[0002]
[Prior art]
As shown in FIG. 3 (a), a door weather strip 20 is attached around the door D of the automobile to seal the gap between the door D and the body that becomes the opening edge B of the door D when the door is closed. .
Such a door weather strip 20 seals a gap by a hollow seal portion 22 and a tongue-shaped lip portion 23 that are integrally formed on the inner side and the outer side of the mounting base 21 elastically contacting the door opening edge B, respectively. It is supposed to be. Further, on the vehicle outer side of the base portion of the lip portion 23, there is a rear lip portion 24 that elastically contacts the standing portion Da of the outer peripheral edge of the door D, that is, the vehicle inner side of the flange portion of the door sash to prevent water from entering. Projected.
[0003]
Among these, especially the lip part 23 needs to raise rigidity from the point of water-tightness and sound-insulating property improvement.
However, when the rigidity of the lip portion 23 is increased, for example, when high-pressure water is directly applied to the lip portion 23 during high-pressure car washing, the lip portion 23 is pushed into the vehicle interior as shown in FIG. The rear lip portion 24 formed at the base portion of the lip portion 23 by the deformation is pulled toward the vehicle interior side. As a result, the rear lip portion 24 is separated from the standing portion Da at the outer peripheral edge of the door D, causing the rear seal to break, and the high pressure water is separated from the standing portion Da at the outer peripheral edge of the door D and the rear seal portion 24 separated therefrom. Between them and the inclined portion Db of the door sash formed at the lower portion of the standing portion Da of the outer peripheral edge of the door D, and enters the vehicle inner side from the bottom of the mounting base 21, so that a sufficient sealing function is not exhibited. There was a problem.
[0004]
Therefore, the present inventor has considered to prevent the back lip portion from being broken by providing a hollow portion in the lip portion.
[0005]
Thus, the door weather strip of the shape which provided the hollow part in the lip | rip part formed in the vehicle outer side of the hollow seal part is known (for example, refer patent document 1, patent document 2).
[0006]
[Patent Document 1]
JP-A-10-287131 (FIG. 2)
[Patent Document 2]
JP-A-11-99830 (FIG. 2)
[0007]
In this application, those corresponding to Patent Documents 1 and 2 are shown in FIGS.
As shown in FIG. 4, the door weatherstrip 30 described in Patent Document 1 has a solid lip 33a formed at the tip of a lip 33 formed on the outer side of the mounting base 31, and when the door D is closed, The solid lip portion 33a is in contact with the outer surface of the door opening edge portion B to form a closed space 34, and the lip portion 33 is formed in a hollow shape having a substantially triangular cross section. Is high. Therefore, the space 34 closed by the lip portion 33 and the hollow portion 32 is less likely to be sucked when the vehicle is traveling at high speed. Since this improves the generation of the whistle noise, it does not aim to deal with high-pressure water by providing a hollow portion in the lip portion to prevent the back lip portion from being broken.
[0008]
That is, Patent Document 1 does not disclose anything about the high-pressure water applied to the lip portion 33 from a car wash or the like. As shown in FIG. 4, when the margin S of the solid lip portion 33a with respect to the door opening edge B is sufficient, there is no particular problem even if high-pressure water is applied to the lip portion 33, but the door weather strip 30 itself When the margin S of the solid lip portion 33a becomes insufficient due to variations in the shape of the above, variations in the mounting state thereof, or variations between surfaces due to the gap between the door D and the door opening edge B, etc. The solid lip portion 33a cannot enter the high-pressure water and enters the inside of the vehicle, resulting in insufficient sealing performance.
Further, the water is transferred from between the standing portion Da on the outer peripheral edge of the door D and the protrusion 35 to the inclined portion Db of the door sash formed at the lower portion of the standing portion Da on the outer peripheral edge of the door D. There is also a risk of entering the inside of the vehicle from the bottom of 31.
Furthermore, the sound insulation is insufficient when a single wall is set long like the solid lip portion 33a.
[0009]
On the other hand, as shown in FIG. 5, according to the door weather strip 40 described in Patent Document 2, the vehicle interior side wall portion 44 of the lip portion 43 formed on the vehicle exterior side of the mounting base portion 41 has a door opening edge when the door D is closed. The vehicle outer wall 45 is deformed so as to come into contact with the portion B and fall down toward the vehicle outer side, and the vehicle outer wall 45 bends into a convex shape so as to be pressed against the periphery of the door D, and the vehicle inner wall 44 is thickened. Since it is formed, there is no description about high-pressure water, but it is considered that high-pressure water can be dealt with.
However, since the vehicle outer wall 45 is bent into a convex shape, the vehicle outer wall 45 protrudes from the periphery of the door D as shown in FIG. It is bad, and it becomes resistance at the time of high speed driving.
In addition, when the space between the surfaces becomes narrow due to the variation between the surfaces due to the gap between the door D and the door opening edge B, the door closing performance is extremely deteriorated.
[0010]
[Problems to be solved by the invention]
Therefore, the object of the present invention is to cope with the problem due to the gap in the gap between the door and the door opening edge, and to minimize the influence on the back lip due to the deformation of the lip formed integrally with the mounting base. An object of the present invention is to provide a door weather strip for an automobile that can prevent the rear lip portion from being broken.
Another object of the present invention is to provide an automotive door weather strip that achieves a flash surface and does not deteriorate the appearance, and also has excellent sound insulation.
[0011]
[Means for Solving the Problems]
  In order to achieve the above object, an automobile door weatherstrip (10) according to claim 1 of the present invention comprises an attachment base (11) attached along an outer peripheral edge of an automobile door (D), and its mounting base (11). It is integrally molded on the vehicle inner side of the mounting base (11), and elastically contacts the door opening edge (B) when the door (D) is closed, thereby forming a gap between the outer peripheral edge of the door (D) and the door opening edge (B). A hollow seal portion (12) for sealing and an outside of the mounting base portion (11) are integrally formed, and elastically contact the door opening edge (B) when the door (D) is closed together with the hollow seal portion (12). A lip portion (13) for sealing a gap between the outer peripheral edge portion of the door (D) and the door opening edge portion (B); and a vehicle outer side of the base portion of the lip portion (13), and the door ( D) a rear lip portion (19) that elastically contacts the vehicle inner side of the outer peripheral edge portion. In the,
  The lip portion (13) includes a first vehicle inner wall portion (15a) erected in a substantially vertical direction from the mounting base portion (11), and a tip of the first vehicle inner wall portion (15a). (X) one end is connected to the other end of the second vehicle inner side wall (15b) with one end connected to the vehicle outer side and the other end extended to the vehicle outer side, and The other end is composed of a vehicle outer wall portion (14) connected to the vehicle outer side of the base portion of the first vehicle inner wall portion (15a), and a hollow portion (16) is provided therein.And the second vehicle inner wall (15b) is thicker than the vehicle outer wall (14),
  When the door (D) is closed, the front end of the lip portion (13) is along the outer surface (m) of the door opening edge (B) or the door opening edge ( When the high pressure water from the car wash or the like is applied to the lip portion (13), the entire lip portion (13) is curved toward the vehicle interior and the second vehicle inner side wall portion (15b) is The first vehicle inner wall (15a) is bent or bent larger than when the door (D) is closed via the bending point (X), and the tip of the lip (13) is opened when the door (D) is closed. Is also elastically contacted at the door opening edge (B) inside the vehicle and bent or curved outward.It is characterized by that.
[0012]
  The invention according to claim 2A mounting base (11) attached along the outer peripheral edge of the door (D) of the automobile, and an inner part of the mounting base (11) are integrally formed on the door opening edge (B) when the door (D) is closed. A hollow seal portion (12) that elastically contacts and seals the gap between the outer peripheral edge portion of the door (D) and the door opening edge portion (B), and is integrally formed on the vehicle outer side of the mounting base portion (11), and the door (D ) A lip portion (13) that elastically contacts the door opening edge (B) when closed and seals the clearance between the outer peripheral edge of the door (D) and the door opening edge (B) together with the hollow seal portion (12); And a rear lip portion (19) projecting on the vehicle outer side of the base portion of the lip portion (13) and elastically contacting the vehicle inner side of the outer peripheral edge portion of the door (D),
  The lip portion (13) includes a first vehicle inner wall portion (15a) erected in a substantially vertical direction from the mounting base portion (11), and a tip of the first vehicle inner wall portion (15a). (X) one end is connected to the other end of the second vehicle inner side wall (15b) with one end connected to the vehicle outer side and the other end extended to the vehicle outer side, and The other end is composed of a vehicle outer wall portion (14) connected to the vehicle outer side of the base portion of the first vehicle inner wall portion (15a), and a hollow portion (16) is provided therein, and the second vehicle interior The side wall (15b) is thicker than the vehicle outer wall (14) and the first vehicle inner wall (15a) is thicker than the second vehicle inner wall (15b).
  When the door (D) is closed, the front end of the lip portion (13) is along the outer surface (m) of the door opening edge (B) or the door opening edge ( When the high pressure water from the car wash or the like is applied to the lip portion (13), the entire lip portion (13) is curved toward the vehicle interior and the second vehicle inner side wall portion (15b) is The first vehicle inner wall (15a) is bent or bent larger than when the door (D) is closed via the bending point (X), and the tip of the lip (13) is opened when the door (D) is closed. Is characterized in that it is elastically contacted at a portion of the door opening edge (B) inside the vehicle and bent or curved outward of the vehicle.
[0013]
  Furthermore, in the invention according to claim 3, when the high-pressure water is applied to the lip portion (13), the first vehicle inner wall portion (15a) is elastically contacted with the hollow seal portion (12).The lip portion (13) is prevented from being deformed to prevent the back lip portion (19) from being lifted.It is characterized by that.
[0021]
Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.
[0022]
According to the automobile door weather strip of the present invention, the lip portion that seals the gap between the door outer peripheral edge portion and the door opening edge portion together with the hollow seal portion is provided in the first vehicle inner side wall that is erected in a substantially vertical direction. Portion, a second vehicle inner wall portion connected to bend or bend with respect thereto, and a vehicle outer wall portion, and a hollow portion is provided inside, so that when the door is closed, the first vehicle inner wall portion The inner wall portion and the second vehicle inner wall portion are deformed around a folding point or a bending point, and the lip portion is curved toward the vehicle inner side, so that it does not protrude from the vehicle outer side, and a flash surface can be realized.
According to this, the appearance is not particularly deteriorated in appearance, and the air resistance is not particularly increased during high speed traveling.
[0023]
When high-pressure water from a car wash or the like is applied to the lip portion when the door is closed, the entire lip portion is curved toward the inside of the vehicle, and the second vehicle inner side wall portion is simply a door with respect to the first vehicle inner wall portion via a break point or a bending point. It bends or bends more than when it is closed, and the tip of the lip portion is elastically contacted at a position on the vehicle inner side of the door opening edge and when bent or curved outside the door.
As described above, when the high-pressure water is applied to the lip portion, the first vehicle inner wall portion and the first vehicle inner wall portion are forcibly bent and deformed around the folding point or the bending point, and the vehicle outer wall portion is changed to the hollow portion. Therefore, as shown in the conventional example (Fig. 3), the entire lip part is deformed at the same time, and the force is different from that which pulls the back lip part toward the inside of the vehicle. Communicate in a reduced state.
Therefore, it is possible to prevent the seal from being cut due to the rising of the back lip.
Therefore, when the lip part has the same rigidity as that of the conventional example by changing the material, the influence on the rear lip part when the lip part is curved and deformed inside the vehicle by high-pressure water is much higher than that of the conventional example. Therefore, it is possible to effectively prevent the back lip portion from being cut off.
[0024]
Further, according to the present invention, even if the clearance between the door outer peripheral edge portion and the door opening edge portion becomes wide due to variations between the surfaces and the margin of the lip portion becomes insufficient, the lip portion is the door opening edge portion. The sealability is not particularly inferior because it can be sealed inside the vehicle.
On the contrary, even when the gap between the door outer peripheral edge and the door opening edge is narrow, the lip portion is hollow, so that the lip portion protrudes outside the vehicle when the door is closed. It can be reduced in comparison. Therefore, it is possible to prevent deterioration in door closing performance and appearance.
[0025]
In addition, since the lip portion has a hollow double structure by the first and second vehicle inner wall portions and the vehicle outer wall portion provided with the hollow portion, as shown in the conventional example, the lip having a tongue-like cross section The sound insulation effect is excellent compared to a single unit.
[0026]
In particular, when high-pressure water is applied to the lip portion, the lip portion is prevented from being pushed further into the vehicle by making the first vehicle inner wall portion elastically contact the hollow seal portion. Since it can withstand high-pressure water, it is possible to further prevent the back lip from floating.
Further, if the second vehicle inner wall portion is thicker than the vehicle outer wall portion, the influence on the rear lip portion is less due to the curved deformation of the thin outer wall portion of the vehicle, so that the rear lip portion can be prevented from rising. it can.
Further, the rigidity of the lip portion can be improved by causing the second vehicle inner wall portion and the vehicle outer wall portion to bulge and curve toward the vehicle outer side in a normal mounting state when the door is not closed.
[0027]
Further, when the door is closed, the height of the point at which the outer wall of the vehicle comes into contact with the standing portion formed on the outer peripheral edge of the door is set to the folding point or the bending point provided between the first vehicle inner wall and the second vehicle inner wall. By setting it to be substantially the same as or lower than the height of the lip portion, the lip portion is surely curved and deformed toward the vehicle inner side, so that the protrusion to the vehicle outer side can be further suppressed.
Also, the base of the lip is made thicker than the tip, or the back lip is elastically applied to an inclined part formed by inclining downward from the lower part of the standing part formed on the outer peripheral edge of the door. By providing at the contact position, the back lip can be effectively prevented from rising.
Further, the sound insulation effect is further enhanced by forming the tip of the hollow part formed in the lip part to the vicinity of the extreme end of the tip part of the lip part.
[0028]
DETAILED DESCRIPTION OF THE INVENTION
With reference to FIG.1 and FIG.2, the door weather strip 10 for motor vehicles based on embodiment of this invention is demonstrated. FIG. 1 shows a cross section of an automobile door weather strip 10 attached to a door D, and FIG. 2A shows a state in which the automobile door weather strip 10 shown in FIG. A cross section is shown, and FIG. 2B shows a cross section of a state where high-pressure water such as a car wash is applied.
[0029]
As shown in FIG. 1, an automobile door weatherstrip 10 according to an embodiment of the present invention mainly includes an attachment base 11 attached along the outer peripheral edge of the automobile door D, and an inner side of the attachment base 11. It is integrally molded, and is formed integrally with the outside of the mounting base 11 on the outside of the mounting base 11 and the hollow seal portion 12 that elastically contacts the door opening edge B when the door D is closed and seals the gap between the door D outer periphery and the door opening edge B. The lip portion 13 that elastically contacts the door opening edge B when the door D is closed and seals the gap between the door D outer peripheral edge portion and the door opening edge portion B together with the hollow seal portion 12, and the base portion of the lip portion 13 A rear lip portion 19 that protrudes from the vehicle exterior side and elastically contacts the vehicle interior side of the outer peripheral edge of the door is provided.
[0030]
The lip portion 13 is formed by a vehicle outer side wall portion 14 and a vehicle inner side wall portion 15, and a hollow portion 16 is provided therein. The vehicle interior side wall portion 15 further includes a first vehicle interior side wall portion 15a and a second vehicle interior side wall portion 15b. More specifically, the first vehicle inner wall portion 15a is erected in a substantially vertical direction from the mounting base 11, and the first vehicle inner wall portion 15a is disposed at the tip of the first vehicle inner wall portion 15a so that the tip is a fold point or a bending point X. One end of the side wall part 15b is connected. The other end of the second vehicle inner wall portion 15b extends toward the vehicle outer side. One end of the vehicle outer wall portion 14 is connected to the other end of the second vehicle inner wall portion 15 b, and the other end is connected to the vehicle outer side of the base portion of the first vehicle inner wall portion 15 a in the mounting base 11.
[0031]
The vehicle outer wall portion 14 bulges and curves toward the vehicle outer side, and the second vehicle inner wall portion 15b also bulges and curves toward the vehicle outer side. In addition, you may make the 2nd vehicle inner side wall part 15b into a linear shape.
The second vehicle inner wall portion 15b is thicker than the vehicle outer wall portion 14, and the first vehicle inner wall portion 15a is thicker than the second vehicle inner wall portion 15b. Further, the wall thickness W of the base portion of the lip portion 13 is made thicker than the tip portion, and the transmission of the force applied to the lip portion 13 to the back lip portion 19 is reduced.
Further, at least when the door is closed, the vehicle outer side wall portion 14 is in contact with a standing portion Da that is a flange formed on the outer peripheral edge of the door (may be in contact with the door even when the door is not closed. The height of the contact point Y is substantially the same as the height of the folding point or the bending point X provided between the first vehicle inner wall portion 15a and the second vehicle inner wall portion 15b. Set it lower or lower. This prevents a part of the lip portion 13 from protruding to the outside of the vehicle when the lip portion 13 is curved toward the inside of the vehicle, preventing the flash surface from being hindered.
[0032]
The front end 16a of the hollow portion 16 is tapered, and the rear end 16b on the mounting base 11 side is round and has a substantially water-drop shape.
Thus, the lip part 13 in which the hollow part 16 is formed is excellent in the sound insulation effect as compared with the lip part having a single tongue-like cross section as shown in the conventional example (FIG. 3).
In particular, the distal end 16a of the hollow portion 16 is formed up to the vicinity of the extreme end 18 of the distal end portion of the lip portion 13, so that the sound insulation effect by the hollow double structure is further enhanced.
Further, a sufficient margin S is secured so that the front end of the lip 13 can be surely buffered to the door opening edge B when the door is closed.
[0033]
The rear lip portion 19 is provided at a position where the rear lip portion 19 elastically contacts the inclined portion Db of the door sash formed by inclining downward from the lower side of the standing portion Da formed on the outer peripheral edge portion of the door. The back lip 19 is effectively prevented from being lifted as compared with the case where it is elastically contacted to the inside of the vehicle.
[0034]
As shown in FIG. 2 (a), when the door D is closed, the front end of the lip portion 13 is along the outer surface m of the door opening edge B or on the vehicle inner side than the outer surface m. Elastically touch B. Due to the deformation, the portion Y of the vehicle outer side wall portion 14 in contact with the upper end of the standing portion Da formed on the outer peripheral edge portion of the door becomes a break point or a bending point, and the vehicle outer side wall portion 14 is bent from the vehicle outer side. It is deformed so as to be curved inward. And the 1st vehicle interior side wall part 15a and the 2nd vehicle interior side wall part 15b deform | transform a little centering | focusing on the folding point or bending point X provided between them. As a result, the lip portion 13 curves toward the inside of the vehicle, so that it does not protrude from the outside of the vehicle and a flash surface can be realized. According to this, the appearance is not particularly deteriorated in appearance, and the air resistance is not particularly increased during high speed traveling.
[0035]
In this state, as shown in FIG. 2 (b), when high-pressure water from a car wash or the like is applied to the lip portion 13, the entire lip portion 13 is bent toward the inside of the vehicle, and the second vehicle inner side wall portion 15b is bent or bent. B is bent or bent larger than that when the door is closed with respect to the first vehicle inner side wall portion 15a via X, and the tip of the lip portion 13 is located closer to the inside of the door opening edge B than when the door is closed. It comes into elastic contact with the part and in the bent or curved state outside the vehicle.
As described above, when the high-pressure water is applied to the lip portion 13, the first vehicle inner wall portion 15 a and the first vehicle inner wall portion 15 b are forcibly bent and deformed around the break point or the bending point X, and the vehicle outer wall portion. 14 is curved and deformed through the hollow portion 16, so that the outside of the vehicle is compared with the case where the lip portion is solid as in the case of a single lip portion having a tongue-like cross section as shown in the conventional example (FIG. 3). The influence of the curved deformation of the lip portion 13 is not directly transmitted to the rear lip portion 19 protruding from the base portion of the wall portion 14 but is transmitted to the rear lip portion 19 in a reduced state. Therefore, it is possible to prevent the seal from being cut due to the rising of the back lip portion 19.
[0036]
When high-pressure water is applied to the lip portion 13, the vehicle inner surface of the first vehicle inner side wall portion 15a is made to elastically contact the vehicle outer surface of the hollow seal portion 12 (the state where it is not elastically contacted in FIG. 2B). The back lip portion 19 may be prevented from being lifted by suppressing further deformation of the lip portion 13.
[0037]
【The invention's effect】
According to the automobile door weather strip of the present invention, the lip portion that seals the gap between the door outer peripheral edge portion and the door opening edge portion together with the hollow seal portion is provided in the first vehicle inner side wall that is erected in a substantially vertical direction. Portion, a second vehicle inner wall portion connected to bend or bend with respect thereto, and a vehicle outer wall portion, and a hollow portion is provided inside, so that when the door is closed, the first vehicle inner wall portion The inner wall portion and the second vehicle inner wall portion are deformed around a folding point or a bending point, and the lip portion is curved toward the vehicle inner side, so that it does not protrude from the vehicle outer side, and a flash surface can be realized.
According to this, the appearance is not particularly deteriorated in appearance, and the air resistance is not particularly increased during high speed traveling.
[0038]
Further, when high-pressure water from a car wash or the like is applied to the lip portion when the door is closed, the first vehicle inner wall portion and the first vehicle inner wall portion are forcibly bent and deformed around a break point or a bending point, and the vehicle outer wall portion. Is curved and deformed through the hollow portion, as shown in the conventional example (FIG. 3), the entire lip portion is deformed at the same time, and its force is different from that pulling the rear lip portion toward the inside of the vehicle. The effect of bending deformation of the part is transmitted in a reduced state.
Therefore, it is possible to prevent the seal from being cut due to the rising of the back lip.
[0039]
Further, according to the present invention, even if the clearance between the door outer peripheral edge portion and the door opening edge portion becomes wide due to variations between the surfaces and the margin of the lip portion becomes insufficient, the lip portion is the door opening edge portion. The sealability is not particularly inferior because it can be sealed inside the vehicle.
On the contrary, even when the gap between the door outer peripheral edge and the door opening edge is narrow, the lip portion is hollow, so that the lip portion protrudes outside the vehicle when the door is closed. It can be reduced in comparison. Therefore, it is possible to prevent deterioration in door closing performance and appearance.
[0040]
In addition, since the lip portion has a hollow double structure by the first and second vehicle inner wall portions and the vehicle outer wall portion provided with the hollow portion, as shown in the conventional example, the lip having a tongue-like cross section The sound insulation effect is excellent compared to a single unit.
[0041]
In particular, when high-pressure water is applied to the lip portion, the lip portion is prevented from being pushed further into the vehicle by making the first vehicle inner wall portion elastically contact the hollow seal portion. Since it can withstand high-pressure water, it is possible to further prevent the back lip from floating. Further, if the second vehicle inner wall portion is thicker than the vehicle outer wall portion, the influence on the rear lip portion is less due to the curved deformation of the thin outer wall portion of the vehicle, so that the rear lip portion can be prevented from rising. it can. Further, the rigidity of the lip portion can be improved by causing the second vehicle inner wall portion and the vehicle outer wall portion to bulge and curve toward the vehicle outer side in a normal mounting state when the door is not closed.
[0042]
Further, when the door is closed, the height of the point at which the outer wall of the vehicle comes into contact with the standing portion formed on the outer peripheral edge of the door is set at the folding point or the bending point provided between the first vehicle inner wall and the second vehicle inner wall. By setting it to be substantially the same as or lower than the height of the lip portion, the lip portion is surely curved and deformed toward the vehicle inner side, so that the protrusion to the vehicle outer side can be further suppressed. Also, the base of the lip is made thicker than the tip, or the back lip is elastically applied to an inclined part formed by inclining downward from the lower part of the standing part formed on the outer peripheral edge of the door. By providing at the contact position, the back lip can be effectively prevented from rising. Further, the sound insulation effect is further enhanced by forming the tip of the hollow part formed in the lip part to the vicinity of the extreme end of the tip part of the lip part.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an automotive door weatherstrip according to an embodiment of the present invention.
2A is a cross-sectional view showing a state in which the automobile door weatherstrip shown in FIG. 1 is elastically contacted with an edge of the door opening, and FIG. 2B is a cross-sectional view showing a state in which high-pressure water is applied. is there.
FIGS. 3A and 3B are sectional views showing a conventional automotive door weatherstrip, in which FIG. 3A shows a state in which the door opening edge is elastically contacted, and FIG. 3B shows a state in which high-pressure water is further applied.
FIG. 4 is a cross-sectional view showing a state in which a door weather strip having a hollow portion formed in a lip portion is in elastic contact with a door opening edge portion.
FIG. 5 is a cross-sectional view showing a state in which another door weather strip having a hollow portion formed in a lip portion is in elastic contact with a door opening edge portion.
[Explanation of symbols]
10 Automotive door weatherstrip
11 Mounting base
12 Hollow seal
13 Lip part
14 Car outer wall
15 Car interior wall
15a First vehicle inner side wall
15b Second vehicle inner wall
16 Hollow part
16a tip
16b rear end
18 The extreme end of the tip of the lip
19 Back lip
20, 30, 40 Door weather strip
21, 31, 41 Mounting base
22, 32, 42 Hollow seal
23, 33, 43 Lip part
33a Solid lip
34 Closed space
35 Protrusion
44 Inside wall
45 Car outer wall
46 Back lip
B Door opening edge
D door
Da standing part
Db inclined part
m Outer surface of door opening edge
S
W The thickness of the base of the lip
X, Y Folding point or bending point

Claims

A mounting base attached along the outer peripheral edge of the door of the automobile, and a gap formed between the door outer peripheral edge and the door opening edge formed integrally with the inner side of the mounting base and elastically contacting the door opening edge when the door is closed A hollow seal portion that seals against the outside of the mounting base and elastically contacts the door opening edge when the door is closed, and seals the gap between the door outer peripheral edge portion and the door opening edge portion together with the hollow seal portion. An automotive door weatherstrip comprising: a lip portion that protrudes and a rear lip portion that projects from the vehicle outer side of the base portion of the lip portion and elastically contacts the vehicle inner side of the outer peripheral edge portion of the door,
The lip portion has a first vehicle inner wall portion standing upright from the mounting base, and one end connected so that the tip of the first vehicle inner wall portion is a fold point or a bending point, and the other end is A vehicle interior side wall portion extending to the vehicle exterior side, a vehicle exterior side having one end coupled to the other end of the second vehicle interior wall portion and the other end coupled to the vehicle exterior of the base portion of the first vehicle interior wall portion It is composed of a wall portion, and a hollow portion is provided inside, and the second vehicle inner wall portion is thicker than the vehicle outer wall portion,
When the door is closed, the tip of the lip portion is along the outer surface of the door opening edge, or is elastically contacted with the door opening edge on the vehicle inner side than the outer surface, and high-pressure water from a car wash or the like is applied to the lip portion. The entire lip portion is bent toward the vehicle inner side, and the second vehicle inner wall portion is bent or bent larger than that when the door is closed with respect to the first vehicle inner wall portion via the fold or bend point. The automotive door weather strip is characterized in that the front end of the door is elastically contacted at a position inside the vehicle at the edge of the door opening than when the door is closed and bent or curved toward the outside of the vehicle.

A mounting base attached along the outer peripheral edge of the door of the automobile, and a gap formed between the door outer peripheral edge and the door opening edge formed integrally with the inner side of the mounting base and elastically contacting the door opening edge when the door is closed A hollow seal portion that seals against the outside of the mounting base and elastically contacts the door opening edge when the door is closed, and seals the gap between the door outer peripheral edge portion and the door opening edge portion together with the hollow seal portion. An automotive door weatherstrip comprising: a lip portion that protrudes and a rear lip portion that projects from the vehicle outer side of the base portion of the lip portion and elastically contacts the vehicle inner side of the outer peripheral edge portion of the door,
The lip portion has a first vehicle inner wall portion standing upright from the mounting base, and one end connected so that the tip of the first vehicle inner wall portion is a fold point or a bending point, and the other end is A vehicle interior side wall portion extending to the vehicle exterior side, a vehicle exterior side having one end coupled to the other end of the second vehicle interior wall portion and the other end coupled to the vehicle exterior of the base portion of the first vehicle interior wall portion The second vehicle inner wall portion is thicker than the vehicle outer wall portion, and the first vehicle inner wall portion is thicker than the second vehicle inner wall portion. Meat,
When the door is closed, the tip of the lip portion is along the outer surface of the door opening edge, or is elastically contacted with the door opening edge on the vehicle inner side than the outer surface, and high-pressure water from a car wash or the like is applied to the lip portion. The entire lip portion is bent toward the vehicle inner side, and the second vehicle inner wall portion is bent or bent larger than that when the door is closed with respect to the first vehicle inner wall portion via the fold or bend point. The automotive door weather strip is characterized in that the front end of the door is elastically contacted at a position inside the vehicle at the edge of the door opening than when the door is closed and bent or curved toward the outside of the vehicle.

When the high-pressure water is applied to the lip portion, the first vehicle inner wall portion is elastically contacted with the hollow seal portion, and deformation of the lip portion is suppressed to prevent the back lip portion from being lifted. The door weather strip for automobiles according to claim 1 or 2.