JP2011084136A

JP2011084136A - Automotive weatherstrip

Info

Publication number: JP2011084136A
Application number: JP2009237323A
Authority: JP
Inventors: Takashi Fukushima; 隆福島
Original assignee: Nishikawa Rubber Co Ltd
Current assignee: Nishikawa Rubber Co Ltd
Priority date: 2009-10-14
Filing date: 2009-10-14
Publication date: 2011-04-28
Anticipated expiration: 2029-10-14
Also published as: JP5443936B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automotive weatherstrip causing neither wrinkle nor rise even at a corner portion. <P>SOLUTION: The weatherstrip 10 is attached to a flange 2 lying along an opening edge of a door D of an automobile body and elastically installed to seal a door panel 3. The weatherstrip has a substantially L-shaped cross section comprised of a vehicle outside wall 11a and a bottom wall 11b. The vehicle outside wall 11a includes an attachment base 11 attached to the flange 2 with a double-coated adhesive tape T; and a hollow sealing portion 12 having a circular arc portion 12c swellingly curved to the vehicle outside of the attachment base 11, and elastically contacted with the door panel 3. Thicknesses y and z of the end portion side of the attachment base 11 in the vehicle outside wall 11a are smaller than a thickness x of the bottom wall 11b side. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、自動車ボディのドア開口縁に沿って形成されたフランジに取付けられ、ドアパネルに弾接してシール性を確保する自動車用ウェザーストリップに関するものである。 The present invention relates to a weather strip for an automobile that is attached to a flange formed along a door opening edge of an automobile body and elastically contacts a door panel to ensure a sealing property.

図５乃至図７に示すように、自動車ボディのドアＤの開口縁にはフランジ２が形成され、そのフランジ２には、ドアパネル３との間のシール性を確保するためのウェザーストリップ３０が取付けられている。 As shown in FIGS. 5 to 7, a flange 2 is formed at the opening edge of the door D of the automobile body, and a weather strip 30 is attached to the flange 2 to ensure a sealing property with the door panel 3. It has been.

このウェザーストリップ３０は、一般に、フランジ２に組付く取付基部３１と、その取付基部３１に一体成形されドアパネル３に弾接する中空シール部３２を備える。取付基部３１は、図７に示すように、車外側壁部３１ａと底壁部３１ｂを備える断面略Ｌ字状であり、車外側壁部３１ａの内側を両面接着テープＴによってフランジ２の側面に取付けるものである。また、底壁部３１ｂの内側にはフランジ２の先端に密着してシール性を確保するハイソフト材などの軟質材Ｎが設けられている。なお、ウェザーストリップ３０の取付基３１としては、断面略Ｌ字状のものの他に、車内側壁部をさらに併せ備えた断面略Ｕ字状のものがある。 The weather strip 30 generally includes an attachment base 31 that is assembled to the flange 2 and a hollow seal portion 32 that is integrally formed with the attachment base 31 and elastically contacts the door panel 3. As shown in FIG. 7, the mounting base portion 31 has a substantially L-shaped cross section including a vehicle outer wall portion 31 a and a bottom wall portion 31 b, and the inside of the vehicle outer wall portion 31 a is attached to the side surface of the flange 2 by a double-sided adhesive tape T. It is to be attached. In addition, a soft material N such as a high soft material is provided on the inner side of the bottom wall portion 31b so as to be in close contact with the tip of the flange 2 to ensure a sealing property. Note that the mounting base 31 of the weather strip 30 includes a substantially U-shaped cross section further including an inner wall portion in addition to a substantially L-shaped cross section.

こうした従来のウェザーストリップ３０は、取付基部３１の車外側壁部３１ａの肉厚は略同一（ｘ（底壁部側）＝ｙ（略中央部）＝ｚ（端部側））であるのに加え、車外側壁部３１ａと底壁部３１ｂ（断面略Ｕ字状の取付基部では、それに加えて車内側壁部）を、同一硬度の材料で形成している。また、車外側壁部３１ａと底壁部３１ｂとの連結部分を、他の部分よりも高硬度の材料で形成したものもある（例えば、特許文献１参照）。 In such a conventional weatherstrip 30, the thickness of the vehicle outer side wall portion 31a of the mounting base portion 31 is substantially the same (x (bottom wall portion side) = y (substantially central portion) = z (end portion side)). In addition, the vehicle outer wall portion 31a and the bottom wall portion 31b (in the case of the mounting base portion having a substantially U-shaped cross section, in addition, the vehicle inner wall portion) are formed of a material having the same hardness. In addition, there is a case where a connecting portion between the vehicle outer side wall portion 31a and the bottom wall portion 31b is formed of a material having higher hardness than other portions (for example, see Patent Document 1).

特開２００７−１５２９７８号公報JP 2007-152978 A

しかしながら、取付基部３１の車外側壁部３１ａの肉厚を略同一にするとともに取付基部３１の全体を同一硬度の材料で形成したウェザーストリップ３０、および特許文献１に示したような車外側壁部３１ａと底壁部３１ｂとの連結部分を他の部分よりも高硬度の材料で形成したウェザーストリップは、いずれも、図８に示すように、コーナー部Ｃにおける内周側では皺Ｗが発生し、外周側では浮き上がりＦが発生してしまい、シール性および外観性が低下してしまうといった問題があった。 However, the weather strip 30 in which the thickness of the vehicle outer wall 31a of the mounting base 31 is made substantially the same and the entire mounting base 31 is made of the same hardness material, and the vehicle outer wall as shown in Patent Document 1 are used. As shown in FIG. 8, in any weather strip in which the connecting portion between 31a and the bottom wall portion 31b is made of a material having a hardness higher than that of other portions, wrinkles W are generated on the inner peripheral side of the corner portion C. In addition, there is a problem that the floating F is generated on the outer peripheral side, and the sealing performance and the appearance are deteriorated.

これは、コーナー部Ｃでは、図８の矢印で示すように、ウェザーストリップ３０の外周側に伸張力が作用し、内周側には収縮力が作用するためであるが、従来のウェザーストリップ３０は、こうした伸張力と収縮力に対応できるように構成されていない。 This is because, in the corner portion C, as shown by the arrow in FIG. 8, an extension force acts on the outer peripheral side of the weather strip 30 and a contraction force acts on the inner peripheral side. Is not configured to accommodate such stretching and contraction forces.

そこで、本発明の目的とするところは、コーナー部においても皺や浮き上がりの発生しない自動車用ウェザーストリップを提供することにある。 Accordingly, an object of the present invention is to provide an automotive weather strip that does not cause wrinkles or lift even at a corner.

上記の目的を達成するために、請求項１に記載の自動車用ウェザーストリップは、自動車ボディのドア（Ｄ）開口縁に沿って形成されたフランジ（２）に取付けられ、ドアパネル（３）に弾設してシールするウェザーストリップ（１０）であって、
車外側壁部（１１ａ）と底壁部（１１ｂ）からなる断面略Ｌ字状で、前記車外側壁部（１１ａ）は前記フランジ（２）に両面接着テープ（Ｔ）で取付けられる取付基部（１１）と、前記取付基部（１１）の車外側に膨出湾曲する円弧部（１２ｃ）を有し、前記ドアパネル（３）に弾接する中空シール部（１２）とを備え、前記取付基部（１１）の車外側壁部（１１ａ）における端部側の肉厚（ｙ，ｚ）を、底壁部（１１ｂ）側の肉厚（ｘ）よりも薄くしたことを特徴とする。 In order to achieve the above object, a weather strip for an automobile according to claim 1 is attached to a flange (2) formed along an opening edge of a door (D) of an automobile body and is elastically attached to a door panel (3). A weatherstrip (10) to be installed and sealed,
The vehicle outer wall (11a) has a substantially L-shaped cross section consisting of an outer wall (11a) and a bottom wall (11b), and the outer wall (11a) is attached to the flange (2) with a double-sided adhesive tape (T). 11) and a hollow seal portion (12) that has an arcuate portion (12c) that bulges and curves outside the mounting base portion (11) and elastically contacts the door panel (3), and includes the mounting base portion (11). The wall thickness (y, z) on the end side of the vehicle outer wall (11a) is made thinner than the wall thickness (x) on the bottom wall (11b) side.

また、請求項２に記載の自動車用ウェザーストリップは、自動車ボディのドア（Ｄ）開口縁に沿って形成されたフランジ（２）に取付けられ、ドアパネル（３）に弾設してシールするウェザーストリップ（１０）であって、
車外側壁部（１１ａ）と底壁部（１１ｂ）からなる断面略Ｌ字状で、前記車外側壁部（１１ａ）は前記フランジ（２）に両面接着テープ（Ｔ）で取付けられる取付基部（１１）と、前記取付基部（１１）の車外側に膨出湾曲する円弧部（１２ｃ）を有し、前記ドアパネル（３）に弾接する中空シール部（１２）とを備え、前記取付基部（１１）の車外側壁部（１１ａ）における肉厚（ｘ，ｙ，ｚ）を、底壁部（１１ｂ）側から端部側にかけて徐々に薄くしたことを特徴とする。 The weather strip for an automobile according to claim 2 is attached to a flange (2) formed along an opening edge of the door (D) of the automobile body, and is weathered and sealed to the door panel (3). (10)
The vehicle outer wall (11a) has a substantially L-shaped cross section consisting of an outer wall (11a) and a bottom wall (11b), and the outer wall (11a) is attached to the flange (2) with a double-sided adhesive tape (T). 11) and a hollow seal portion (12) that has an arcuate portion (12c) that bulges and curves outside the mounting base portion (11) and elastically contacts the door panel (3), and includes the mounting base portion (11). The wall thickness (x, y, z) of the vehicle outer wall (11a) is gradually reduced from the bottom wall (11b) side to the end side.

さらに、請求項３に記載の自動車用ウェザーストリップは、自動車ボディのドア（Ｄ）開口縁に沿って形成されたフランジ（２）に取付けられ、ドアパネル（３）に弾設してシールするウェザーストリップ（１０）であって、
車外側壁部（１１ａ）と底壁部（１１ｂ）と車内側壁部（１１ｃ）からなる断面略Ｕ字状で、両側壁部（１１ａ，１１ｃ）の内方に前記フランジ（２）を挟持する複数のリップ（１３，１４）が設けられた取付基部（１１）と、前記取付基部（１１）の車外側に膨出湾曲する円弧部（１２ｃ）を有し、前記ドアパネル（３）に弾接する中空シール部（１２）とを備え、前記取付基部（１１）の車外側壁部（１１ａ）における端部側の肉厚（ｙ，ｚ）を、底壁部（１１ｂ）側の肉厚（ｘ）よりも薄くしたことを特徴とする。 Furthermore, the weather strip for an automobile according to claim 3 is attached to a flange (2) formed along an opening edge of the door (D) of the automobile body, and is weather-stripped and sealed to the door panel (3). (10)
The flange (2) is sandwiched inside the side wall portions (11a, 11c) with a substantially U-shaped cross-section comprising a vehicle outer wall portion (11a), a bottom wall portion (11b), and a vehicle inner wall portion (11c). A mounting base (11) provided with a plurality of lips (13, 14) and an arcuate portion (12c) that bulges and curves outside the mounting base (11) and elastically contacts the door panel (3). A hollow seal portion (12), and the thickness (y, z) of the mounting base portion (11) on the vehicle outer side wall portion (11a) on the end side is changed to the thickness on the bottom wall portion (11b) side (x ).

また、請求項４に記載の自動車用ウェザーストリップは、自動車ボディのドア（Ｄ）開口縁に沿って形成されたフランジ（２）に取付けられ、ドアパネル（３）に弾設してシールするウェザーストリップ（１０）であって、
車外側壁部（１１ａ）と底壁部（１１ｂ）と車内側壁部（１１ｃ）からなる断面略Ｕ字状で、両側壁部（１１ａ，１１ｃ）の内方に前記フランジ（２）を挟持する複数のリップ（１３，１４）が設けられた取付基部（１１）と、前記取付基部（１１）の車外側に膨出湾曲する円弧部（１２ｃ）を有し、前記ドアパネル（３）に弾接する中空シール部（１２）とを備え、前記取付基部（１１）の車外側壁部（１１ａ）における肉厚（ｘ，ｙ，ｚ）を、底壁部（１１ｂ）側から端部側にかけて徐々に薄くしたことを特徴とする。 The weather strip for an automobile according to claim 4 is attached to a flange (2) formed along an opening edge of the door (D) of the automobile body, and is weather-striped and sealed to the door panel (3). (10)
The flange (2) is sandwiched inside the side wall portions (11a, 11c) with a substantially U-shaped cross-section comprising a vehicle outer wall portion (11a), a bottom wall portion (11b), and a vehicle inner wall portion (11c). A mounting base (11) provided with a plurality of lips (13, 14) and an arcuate portion (12c) that bulges and curves outside the mounting base (11) and elastically contacts the door panel (3). A hollow seal portion (12), and the thickness (x, y, z) of the mounting base portion (11) on the vehicle outer wall portion (11a) is gradually increased from the bottom wall portion (11b) side to the end portion side. Characterized by thinning.

また、請求項５に記載の自動車用ウェザーストリップは、請求項３又は４に係る発明の特徴に加えて、前記取付基部（１１）の車内側壁部（１１ｃ）における端部側の肉厚（ｙ’，ｚ’）を、底壁部側（１１ｂ）の肉厚（ｘ’）よりも薄くしたこと特徴とする。 According to a fifth aspect of the present invention, in addition to the features of the invention according to the third or fourth aspect, the thickness (y of the end portion side of the vehicle interior side wall (11c) of the mounting base (11) ', Z') is characterized by being thinner than the wall thickness (x ') on the bottom wall side (11b).

なお、括弧内の記号は、図面および後述する発明を実施するための形態に記載された対応要素又は対応事項を示すものである。 Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments for carrying out the invention to be described later.

請求項１及び請求項２に記載の自動車用ウェザーストリップによれば、断面略Ｌ字状の取付基部を有するものにおいて、取付基部の車外側壁部における端部側の肉厚を、底壁部側の肉厚よりも薄くしたので、コーナー部において皺や浮き上がりが発生するのを防止することができる。 According to the weather strip for automobiles according to claim 1 and claim 2, in the case of having an attachment base portion having a substantially L-shaped cross section, the thickness of the end portion side in the vehicle outer wall portion of the attachment base portion is set to the bottom wall portion. Since it is thinner than the wall thickness on the side, it is possible to prevent wrinkles and lifts from occurring at the corners.

すなわち、コーナー部においては、その外周側に伸張力が作用し、その内周側に収縮力が作用するが、本発明に係るウェザーストリップは、コーナー部の外周側に位置する車外側壁部の端部側肉厚を底壁部側肉厚よりも薄くしたので、伸張力の作用によって容易に伸び変形する。また、その逆に、コーナー部の内周側に位置する底壁部側肉厚は厚いので、収縮力の作用によっても収縮変形しない。これにより、ウェザーストリップを、コーナー部の内周側に皺を発生させることなく、また、外周側に浮き上がりを発生させることなく、フランジに取付けることができる。 That is, in the corner portion, an extension force acts on the outer peripheral side and a contraction force acts on the inner peripheral side. However, the weather strip according to the present invention has a vehicle outer wall portion located on the outer peripheral side of the corner portion. Since the end side wall thickness is made thinner than the bottom wall side wall thickness, it is easily stretched and deformed by the action of the stretching force. On the contrary, since the bottom wall portion side wall thickness located on the inner peripheral side of the corner portion is thick, it does not shrink and deform even by the action of the contraction force. Thus, the weather strip can be attached to the flange without generating wrinkles on the inner peripheral side of the corner portion and without generating lift on the outer peripheral side.

また、請求項３及び請求項４に記載の自動車用ウェザーストリップによれば、断面略Ｕ字状の取付基部を有するものにおいても、取付基部の車外側壁部における端部側の肉厚を、底壁部側の肉厚よりも薄くしたので、コーナー部において皺や浮き上がりが発生するのを防止することができる。 In addition, according to the weather strip for an automobile according to claim 3 and claim 4, even if it has an attachment base portion having a substantially U-shaped cross section, the wall thickness on the end side in the vehicle outer wall portion of the attachment base portion is Since it is thinner than the wall thickness on the bottom wall side, it is possible to prevent wrinkles and lifts from occurring in the corner portion.

なお、請求項１及び請求項３に係る発明において、コーナー部の外周側に位置する車外側壁部の端部側肉厚を底壁部側肉厚よりも薄くするとは、請求項２及び請求項４に係る発明のように、底壁部側から端部側にかけて徐々に薄くすることによって伸び率を徐々に変化させるものでも、底壁部側から端部側にかけて２段階，あるいは３段階と段階的に薄くするものであってもよい。 In the inventions according to claims 1 and 3, the end side wall thickness of the vehicle outer side wall portion positioned on the outer peripheral side of the corner portion is made thinner than the bottom wall side wall thickness. As in the invention according to item 4, even if the elongation rate is gradually changed by gradually thinning from the bottom wall side to the end side, two or three steps are required from the bottom wall side to the end side. It may be thinned in stages.

また、請求項５に記載の自動車用ウェザーストリップによれば、請求項３又は４に記載の発明の作用効果を加えて、断面略Ｕ字状の取付基部の車外側壁部だけでなく、車内側壁部についてもその端部側の肉厚を、底壁部側の肉厚よりも薄くしたので、コーナー部において皺や浮き上がりが発生するのを一層防止することができる。 In addition, according to the weather strip for an automobile according to claim 5, in addition to the action and effect of the invention according to claim 3 or 4, not only the vehicle outer wall portion of the mounting base portion having a substantially U-shaped cross section but also the interior of the vehicle As for the side wall portion, the wall thickness at the end side is made thinner than the wall thickness at the bottom wall portion side, so that it is possible to further prevent wrinkles and lifts from occurring at the corner portion.

本発明の第一実施形態に係る自動車用ウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。The weather strip for motor vehicles concerning 1st embodiment of this invention is shown, and it is the sectional view on the AA line of FIG. 本発明の第二実施形態に係る自動車用ウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。The weather strip for motor vehicles concerning 2nd embodiment of this invention is shown, and it is the sectional view on the AA line of FIG. 本発明の第三実施形態に係る自動車用ウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。The weather strip for motor vehicles concerning 3rd embodiment of this invention is shown, and it is the sectional view on the AA line of FIG. 本発明の第四実施形態に係る自動車用ウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。The weather strip for motor vehicles based on 4th embodiment of this invention is shown, and it is the sectional view on the AA line of FIG. 自動車用ウェザーストリップを備えた自動車を示す側面図である。It is a side view which shows the motor vehicle provided with the weather strip for motor vehicles. 図５に示す自動車に取付けられた自動車用ウェザーストリップを示す側面図である。It is a side view which shows the weather strip for motor vehicles attached to the motor vehicle shown in FIG. 従来例に係る自動車用ウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。，FIG. 7 is a sectional view taken along line AA of FIG. 6, showing a weather strip for an automobile according to a conventional example. , 従来例に係る自動車用ウェザーストリップのコーナー部を示す側面図である。It is a side view which shows the corner part of the weather strip for motor vehicles based on a prior art example.

（第一実施形態）
図１，図５および図６を参照して、本発明の第一実施形態に係る自動車用ウェザーストリップ１０について説明する。図１は、第一実施形態に係るウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。従来例で示したものと同一部分には、同一符号を付した。 (First embodiment)
An automotive weather strip 10 according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a weather strip according to the first embodiment, and is a cross-sectional view taken along line AA of FIG. The same parts as those shown in the conventional example are denoted by the same reference numerals.

この自動車用ウェザーストリップ１０は、自動車ボディのドアＤの開口縁に沿って形成されたフランジ２に、両面接着テープＴによって取付けられ、ドアパネル３に弾接して自動車ボディとドアパネル３との間を塞いでシール性を確保するものであり、取付基部１１および中空シール部１２を備えている。なお、このウェザーストリップ１０は、図６に示すように、コーナー部Ｃを含む全長を押出成形によって形成されている。 The automobile weather strip 10 is attached to the flange 2 formed along the opening edge of the door D of the automobile body by a double-sided adhesive tape T, and elastically contacts the door panel 3 to block between the automobile body and the door panel 3. In order to secure the sealing property, the mounting base 11 and the hollow sealing portion 12 are provided. In addition, as shown in FIG. 6, this weather strip 10 is formed in the full length including the corner part C by extrusion molding.

取付基部１１は、車外側壁部１１ａと底壁部１１ｂとを有する断面略Ｌ字状で、車外側壁部１１ａがフランジ２の車外側面に両面接着テープＴで接着して取付けられている。また、底壁部１１ｂには、フランジ２の先端部に密着する軟質材Ｎを設け、その部分のシール性を確保している。 The mounting base 11 has a substantially L-shaped cross section having a vehicle outer wall 11a and a bottom wall 11b, and the vehicle outer wall 11a is attached to the vehicle outer surface of the flange 2 with a double-sided adhesive tape T. The bottom wall 11b is provided with a soft material N that is in close contact with the tip of the flange 2 to ensure the sealability of that portion.

中空シール部１２は、取付基部１１の車外側壁部１１ａから車外側に向けて略末広がり状に突設した二つの脚部１２ａ，１２ｂと、二つの脚部１２ａ，１２ｂの端部同士を接続し車外側に膨出湾曲する円弧部１２ｃを有している。この中空シール部１２がドアパネル３に弾接して、ボディとドアパネル３との間をシールする。 The hollow seal portion 12 connects the two leg portions 12a and 12b projecting from the vehicle outer side wall portion 11a of the mounting base 11 toward the vehicle outer side and the ends of the two leg portions 12a and 12b. An arcuate portion 12c that bulges and curves on the outer side of the vehicle. The hollow seal portion 12 elastically contacts the door panel 3 to seal between the body and the door panel 3.

そして、取付基部１１の車外側壁部１１ａにおける端部側の肉厚ｙ，ｚを、底壁部１１ｂ側の肉厚ｘよりも薄くしている。
ここでは、中空シール部１２の二つの脚部１２ａ，１２ｂの付け根間に位置する車外側壁部１１ａの部位の肉厚ｙと、中空シール部１２の脚部１２ａの付け根より先端側に位置する車外側壁部１１ａの部位の肉厚ｚとを略同一、又は肉厚ｚを肉厚ｙよりも薄くし、底壁部１１ｂ側の肉厚ｘ（中空シール部１２の脚部１２ｂの付け根より底壁部１１ｂ側に位置する車外側壁部１１ａの部位）に対して段階的に厚さを薄くしている（ｘ〉ｙ≧ｚ）。 And thickness y, z of the edge part side in the vehicle outer side wall part 11a of the attachment base 11 is made thinner than thickness x of the bottom wall part 11b side.
Here, the thickness y of the part of the vehicle outer side wall portion 11a located between the bases of the two leg portions 12a and 12b of the hollow seal portion 12 and the tip side of the base portion of the leg portion 12a of the hollow seal portion 12 are positioned. The thickness z of the portion of the vehicle outer side wall portion 11a is substantially the same, or the thickness z is made thinner than the thickness y, and the thickness x on the bottom wall portion 11b side (from the base of the leg portion 12b of the hollow seal portion 12) The thickness of the vehicle outer wall portion 11a located on the bottom wall portion 11b side is gradually reduced (x> y ≧ z).

なお、本実施形態に係るウェザーストリップでは、取付基部１１の車外側壁部１１ａ及び底壁部１１ｂをソリッド材で形成している。ソリッド材は、スポンジ材と比較してその表面が平滑であるため、車外側壁部１１ａを両面接着テープＴによってフランジ２に強固に取付けることができる。
また中空シール部１２の二つの脚部１２ａ，１２ｂと表面部１２ｄをソリッド材で構成し、内部１２ｅをスポンジ材で形成している。中空シール部１２の表面部１２ｄをソリッド材で形成することによって、その表面を平滑面として、ドアパネル３との密な接触を図りシール性を高めることができる。また、その内部１２ｅをスポンジ材で形成することによって弾性変形し易くし、ドアパネル３との接触面積を大きくしてシール性を向上させている。
これにかえて、中空シール部１２をソリッド材だけで構成したり、あるいは、スポンジ材だけで構成することも可能である。 In the weather strip according to the present embodiment, the vehicle outer side wall portion 11a and the bottom wall portion 11b of the attachment base portion 11 are formed of a solid material. Since the surface of the solid material is smoother than that of the sponge material, the vehicle outer side wall portion 11a can be firmly attached to the flange 2 by the double-sided adhesive tape T.
Further, the two leg portions 12a and 12b and the surface portion 12d of the hollow seal portion 12 are made of a solid material, and the inside 12e is made of a sponge material. By forming the surface portion 12d of the hollow seal portion 12 from a solid material, the surface can be made a smooth surface to achieve close contact with the door panel 3 and improve sealing performance. Further, by forming the inside 12e of a sponge material, it is easily elastically deformed, and the area of contact with the door panel 3 is increased to improve the sealing performance.
Alternatively, the hollow seal portion 12 can be made of only a solid material, or can be made of only a sponge material.

以上のように構成された自動車用ウェザーストリップ１０によれば、コーナー部Ｃの外周側に位置する取付基部１１の車外側壁部１１ａの端部側には伸張力が作用するが、車外側壁部１１ａにおける端部側の肉厚ｙ，ｚを、底壁部１１ｂ側の肉厚ｘよりも薄くしたので、その伸張力に対応して容易に伸び変形する。
一方、コーナー部Ｃの内周側に位置する取付基部１１の車外側壁部１１ａの底壁部１１ｂには収縮力が作用するが、底壁部１１ｂ側の肉厚ｘは厚いので、その収縮力の作用によっても収縮変形しがたい。
これにより、ウェザーストリップ１０は、フランジ２の形状に追従して湾曲するので、コーナー部Ｃの内側に皺Ｗや外側に浮き上がりＦが発生するのを防止することができる。 According to the automobile weather strip 10 configured as described above, an extension force acts on the end portion side of the vehicle outer side wall portion 11a of the mounting base portion 11 located on the outer peripheral side of the corner portion C. Since the thicknesses y and z on the end portion side of the portion 11a are made thinner than the thickness x on the bottom wall portion 11b side, they easily stretch and deform in accordance with the extension force.
On the other hand, the contraction force acts on the bottom wall portion 11b of the vehicle outer side wall portion 11a of the mounting base portion 11 located on the inner peripheral side of the corner portion C. However, since the wall thickness x on the bottom wall portion 11b side is thick, the contraction is caused. It is hard to contract by deformation of force.
Thereby, since the weather strip 10 curves following the shape of the flange 2, it is possible to prevent the wrinkles W and the floating F from being generated outside the corner portion C.

（第二実施形態）
次に図２を参照して、本発明の第二実施形態に係る自動車用ウェザーストリップ１０について説明する。図２は、第二実施形態に係るウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。 (Second embodiment)
Next, with reference to FIG. 2, the weather strip 10 for motor vehicles based on 2nd embodiment of this invention is demonstrated. FIG. 2 shows a weather strip according to the second embodiment, and is a cross-sectional view taken along line AA of FIG.

このウェザーストリップ１０は、自動車ボディのドア開口縁に沿って形成されたフランジ２に取付けられ、ドアパネル３との間のシール性を確保するものであり、取付基部１１および中空シール部１２を備える。 The weather strip 10 is attached to the flange 2 formed along the door opening edge of the automobile body, and ensures sealing performance with the door panel 3, and includes an attachment base 11 and a hollow seal portion 12.

取付基部１１は、車外側壁部１１ａ，底壁部１１ｂ，車内側壁部１１ｃ、および車内側壁部１１ｃを有する断面略Ｕ字状であり、車外側壁部１１ａと車内側壁部１１ｃの内方にはフランジ２を挟持する複数のリップ１３，１４が設けられている。車外側壁部１１ａには４つの短いリップ１３が設けられ、車内側壁部１１ｃには１つの長い組付けリップ１４が設けられている。また、取付基部１１には断面略Ｕ字状の芯材（金属又は樹脂製）１５が埋設され、取付基部１１の剛性を向上させてフランジ２に対する挟持力を高めてより強固に取付けることができるようにしている。さらに、取付基部１１の底壁部１１ｂと車内側壁部１１ｃとの接続部位から車内側に向けて、内装材（図示しない）に当接する装飾トリム１６を突設して外観性の向上を図っている。 The mounting base portion 11 has a substantially U-shaped cross section having a vehicle outer side wall portion 11a, a bottom wall portion 11b, a vehicle inner side wall portion 11c, and a vehicle inner side wall portion 11c, and is formed inside the vehicle outer side wall portion 11a and the vehicle inner side wall portion 11c. Is provided with a plurality of lips 13, 14 for sandwiching the flange 2. Four short lips 13 are provided on the vehicle outer wall 11a, and one long assembly lip 14 is provided on the vehicle inner wall 11c. Further, a core material (made of metal or resin) 15 having a substantially U-shaped cross-section is embedded in the mounting base 11, and the rigidity of the mounting base 11 can be improved to increase the clamping force with respect to the flange 2, so that the mounting can be performed more firmly. I am doing so. Furthermore, a decorative trim 16 that abuts against an interior material (not shown) is projected from the connection portion between the bottom wall portion 11b of the mounting base portion 11b and the vehicle interior side wall portion 11c toward the inside of the vehicle to improve the appearance. Yes.

また、中空シール部１２は、取付基部１１の車外側壁部１１ａから車外側に向けて略末広がり状に突設した二つの脚部１２ａ，１２ｂと、二つの脚部１２ａ，１２ｂの端部同士を接続し車外側に膨出湾曲する円弧部１２ｃを有している。この中空シール部１２がドアパネル３に弾接して、ボディとドアパネル３との間をシールする。
また、中空シール部１２の表面部１２ｄをソリッド材で構成し、内部１２ｅをスポンジ材で形成しているが、これにかえて、中空シール部１２をソリッド材だけで構成したり、あるいは、スポンジ材だけで構成することも可能である。 The hollow seal portion 12 includes two leg portions 12a and 12b projecting from the vehicle outer wall portion 11a of the attachment base portion 11 toward the vehicle outer side, and ends of the two leg portions 12a and 12b. And an arcuate portion 12c that bulges and curves outward from the vehicle. The hollow seal portion 12 elastically contacts the door panel 3 to seal between the body and the door panel 3.
Further, the surface portion 12d of the hollow seal portion 12 is made of a solid material and the inner portion 12e is made of a sponge material. Instead, the hollow seal portion 12 is made of only a solid material, or a sponge material is used. It is also possible to configure only with materials.

そして、取付基部１１の車外側壁部１１ａにおける端部側の肉厚ｙ，ｚを、底壁部１１ｂ側の肉厚ｘよりも薄くしている。なお、取付基部１１の車内側壁部１１ｃについては略同一の厚さとしている。
ここでは、中空シール部１２の二つの脚部１２ａ，１２ｂの付け根間に位置する車外側壁部１１ａの部位の肉厚ｙと、中空シール部１２の脚部１２ａの付け根より先端側に位置する車外側壁部１１ａの部位の肉厚ｚとを略同一、又は肉厚ｚを肉厚ｙよりも薄くし、底壁部１１ｂ側の肉厚ｘ（中空シール部１２の脚部１２ｂの付け根より底壁部１１ｂ側に位置する車外側壁部１１ａの部位）に対して段階的に厚さを薄くしている（ｘ〉ｙ≧ｚ）。 And thickness y, z of the edge part side in the vehicle outer side wall part 11a of the attachment base 11 is made thinner than thickness x of the bottom wall part 11b side. In addition, about the vehicle interior side wall part 11c of the attachment base 11, it is set as substantially the same thickness.
Here, the thickness y of the part of the vehicle outer side wall portion 11a located between the bases of the two leg portions 12a and 12b of the hollow seal portion 12 and the tip side of the base portion of the leg portion 12a of the hollow seal portion 12 are positioned. The thickness z of the portion of the vehicle outer wall portion 11a is substantially the same, or the thickness z is made thinner than the thickness y, and the thickness x on the bottom wall portion 11b side (from the base of the leg portion 12b of the hollow seal portion 12) The thickness of the vehicle outer wall portion 11a located on the bottom wall portion 11b side is gradually reduced (x> y ≧ z).

こうした構成とすることによって、コーナー部Ｃの外周側に位置する、車外側壁部１１ａの端部側の肉厚は薄いので、その外周側に作用する伸張力によって容易に伸び変形する。その逆に、コーナー部Ｃの内周側に位置する車外側壁部１１ａの底壁部１１ｂ側の肉厚は厚いので、その内周側に作用する収縮力によっても容易に収縮変形しない。
そのため、ウェザーストリップ１０を、コーナー部Ｃにおいて皺Ｗや浮き上がりＦを発生させることなく、フランジ２に取付けることができる。 By adopting such a configuration, the wall thickness on the end portion side of the vehicle outer side wall portion 11a located on the outer peripheral side of the corner portion C is thin, so that it is easily stretched and deformed by the extension force acting on the outer peripheral side. On the contrary, since the wall thickness on the bottom wall portion 11b side of the vehicle outer side wall portion 11a located on the inner peripheral side of the corner portion C is thick, it is not easily contracted and deformed by the contraction force acting on the inner peripheral side.
Therefore, the weather strip 10 can be attached to the flange 2 without generating wrinkles W or lifts F in the corner portion C.

（第三実施形態）
次に図３を参照して、本発明の第三実施形態に係る自動車用ウェザーストリップ１０について説明する。図３は、第三実施形態に係るウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。 (Third embodiment)
Next, with reference to FIG. 3, the weather strip 10 for motor vehicles which concerns on 3rd embodiment of this invention is demonstrated. FIG. 3 shows a weather strip according to the third embodiment, and is a cross-sectional view taken along line AA of FIG.

本発明の第一実施形態では、断面略Ｌ字状に構成された取付基部１１の車外側壁部１１ａの肉厚に関して、中空シール部１２の二つの脚部１２ａ，１２ｂの付け根間に位置する車外側壁部１１ａの部位の肉厚ｙと、中空シール部１２の脚部１２ａの付け根より先端側に位置する車外側壁部１１ａの部位の肉厚ｚとを略同一、又は肉厚ｚを肉厚ｙよりも薄くするにあたり、底壁部１１ｂ側の肉厚ｘ（中空シール部１２の脚部１２ｂの付け根より底壁部１１ｂ側に位置する車外側壁部１１ａの部位）に対して段階的に厚さを薄くした（肉厚ｙ又は肉厚ｚは一定区間は同じ厚みを保つ）が、本発明の第三実施形態では、取付基部１１の車外側壁部１１ａの肉厚を底壁部１１ｂ側から端部側にかけて徐々に薄くしたものである。より詳細には、取付基部１１の車外側壁部１１ａの車外側面をフランジ２に接近するようにテーパー状に徐々に薄くしたものである（ｘ〉ｙ〉ｚ）。 In the first embodiment of the present invention, the thickness of the vehicle outer side wall portion 11a of the mounting base portion 11 having a substantially L-shaped cross section is located between the roots of the two leg portions 12a and 12b of the hollow seal portion 12. The wall thickness y of the vehicle outer wall portion 11a is substantially the same as the wall thickness z of the vehicle outer wall portion 11a located on the tip side from the base of the leg 12a of the hollow seal portion 12, or the wall thickness z is the same. When the thickness is made thinner than the thickness y, the thickness x on the bottom wall portion 11b side (the portion of the vehicle outer wall portion 11a located on the bottom wall portion 11b side from the root of the leg portion 12b of the hollow seal portion 12) However, in the third embodiment of the present invention, the thickness of the vehicle outer side wall portion 11a of the mounting base portion 11 is set to the bottom wall. The thickness is gradually reduced from the portion 11b side to the end side. More specifically, the vehicle outer surface of the vehicle outer wall 11a of the attachment base 11 is gradually thinned in a tapered shape so as to approach the flange 2 (x> y> z).

これによれば、本発明の第一実施形態のものと比較した場合、取付基部１１の車外側壁部１１ａの肉厚を、底壁部１１ｂ側から端部側にかけて徐々に薄くして伸び率を徐々に変化させているので、急激な変動を抑えることができる。 According to this, when compared with that of the first embodiment of the present invention, the wall thickness of the vehicle outer side wall portion 11a of the mounting base portion 11 is gradually reduced from the bottom wall portion 11b side to the end side to increase the elongation rate. Is gradually changed, so that rapid fluctuations can be suppressed.

（第四実施形態）
次に図４を参照して、本発明の第四実施形態に係る自動車用ウェザーストリップ１０について説明する。図４は、第四実施形態に係るウェザーストリップを示すもので、図６のＡ−Ａ線断面図である。 (Fourth embodiment)
Next, an automotive weather strip 10 according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 shows a weather strip according to the fourth embodiment, and is a cross-sectional view taken along line AA of FIG.

本発明の第二実施形態では、断面略Ｕ字状に構成された取付基部１１の車外側壁部１１ａの肉厚に関して、中空シール部１２の二つの脚部１２ａ，１２ｂの付け根間に位置する車外側壁部１１ａの部位の肉厚ｙと、中空シール部１２の脚部１２ａの付け根より先端側に位置する車外側壁部１１ａの部位の肉厚ｚとを略同一、又は肉厚ｚを肉厚ｙよりも薄くするにあたり、底壁部１１ｂ側の肉厚ｘ（中空シール部１２の脚部１２ｂの付け根より底壁部１１ｂ側に位置する車外側壁部１１ａの部位）に対して段階的に厚さを薄くした（肉厚ｙ又は肉厚ｚは一定区間は同じ厚みを保つ）が、本発明の第四実施形態では、図４（ａ）に示すように、取付基部１１の車外側壁部１１ａの肉厚を底壁部１１ｂ側から端部側にかけて徐々に薄くしたものである。より詳細には、取付基部１１の車外側壁部１１ａの車外側面をフランジ２に接近するようにテーパー状に徐々に薄くしたものである（ｘ〉ｙ〉ｚ）。そして、図４（ｂ）は、さらに取付基部１１の車内側壁部１１ｃの肉厚についても、底壁部１１ｃ側から端部側にかけて徐々に薄くしたものである。より詳細には、取付基部１１の車内側壁部１１ｃの車内側面をフランジ２に接近するようにテーパー状に徐々に薄くしたものである（ｘ’〉ｙ’〉ｚ’） In the second embodiment of the present invention, the thickness of the vehicle outer side wall portion 11a of the mounting base portion 11 having a substantially U-shaped cross section is located between the bases of the two leg portions 12a and 12b of the hollow seal portion 12. The wall thickness y of the vehicle outer wall portion 11a is substantially the same as the wall thickness z of the vehicle outer wall portion 11a located on the tip side from the base of the leg 12a of the hollow seal portion 12, or the wall thickness z is the same. When the thickness is made thinner than the thickness y, the thickness x on the bottom wall portion 11b side (the portion of the vehicle outer wall portion 11a located on the bottom wall portion 11b side from the root of the leg portion 12b of the hollow seal portion 12) However, in the fourth embodiment of the present invention, as shown in FIG. 4 (a), the vehicle of the mounting base 11 is thinned (thickness y or thickness z is the same thickness). The thickness of the outer wall 11a is gradually reduced from the bottom wall 11b side to the end side. . More specifically, the vehicle outer surface of the vehicle outer wall 11a of the mounting base 11 is gradually thinned in a tapered shape so as to approach the flange 2 (x> y> z). 4B further shows that the thickness of the vehicle interior side wall 11c of the mounting base 11 is gradually reduced from the bottom wall 11c side to the end side. More specifically, the inner side surface of the inner side wall portion 11c of the mounting base 11 is gradually thinned in a tapered shape so as to approach the flange 2 (x '> y'> z ').

このように、図４（ａ）に示したウェザーストリップによれば、本発明の第二実施形態のものと比較した場合、取付基部１１の車外側壁部１１ａの肉厚を、底壁部１１ｂ側から端部側にかけて徐々に薄くして伸び率を徐々に変化させているので、急激な変動を抑えることができる。
また、図４（ｂ）に示したウェザーストリップによれば、断面略Ｕ字状の取付基部１１の車外側壁部１１ａだけでなく、車内側壁部１１ｃについてもその端部側の肉厚ｙ’，ｚ’を、底壁部１１ｂ側の肉厚ｘ’よりも薄くしたので、コーナー部Ｃにおいて皺Ｗや浮き上がりＦが発生するのを一層防止することができる。 As described above, according to the weather strip shown in FIG. 4A, the wall thickness of the vehicle outer side wall portion 11a of the mounting base portion 11 is set to the bottom wall portion 11b when compared with the second embodiment of the present invention. Since the elongation rate is gradually changed by decreasing the thickness from the side to the end side, a rapid fluctuation can be suppressed.
Further, according to the weather strip shown in FIG. 4 (b), not only the vehicle outer side wall portion 11a of the mounting base portion 11 having a substantially U-shaped cross section but also the wall thickness 11 ′ on the end side of the vehicle inner side wall portion 11c. , Z ′ is made thinner than the wall thickness x ′ on the bottom wall portion 11b side, so that it is possible to further prevent the wrinkles W and the lift F from occurring in the corner portion C.

なお、図４（ａ），図４（ｂ）のウェザーストリップにおいて、取付基部１１の車内側壁部１１ｃの肉厚を、図２（第二実施形態）で示したウェザーストリップの取付基部１１の車外側壁部１１ａの肉厚のように段階的に薄くするような構成にしてもよい。また、段階的に薄く変化する部分に傾斜部を設けて滑らかに変化させるようにしてもよい。 4 (a) and 4 (b), the thickness of the vehicle interior side wall portion 11c of the mounting base 11 is the same as that of the weather strip mounting base 11 shown in FIG. 2 (second embodiment). You may make it the structure which makes it thin in steps like the thickness of the outer side wall part 11a. Moreover, you may make it change smoothly by providing an inclination part in the part which changes thinly in steps.

２フランジ
３ドアパネル
１０ウェザーストリップ
１１取付基部
１１ａ車外側壁部
１１ｂ底壁部
１１ｃ車内側壁部
１２中空シール部
１２ａ脚部
１２ｂ脚部
１２ｃ円弧部
１２ｄ中空シール部の表面部
１２ｅ中空シール部の内部
１３リップ
１４組付けリップ
１５芯材
１６装飾トリム
３０ウェザーストリップ
３１取付基部
３１ａ車外側壁部
３１ｂ底壁部
３２中空シール部
Ｃコーナー部
Ｆ浮き上がり
Ｎ軟質材
Ｔ両面接着テープ
Ｗ皺 DESCRIPTION OF SYMBOLS 2 Flange 3 Door panel 10 Weather strip 11 Mounting base part 11a Car outer side wall part 11b Bottom wall part 11c Car interior side wall part 12 Hollow seal part 12a Leg part 12b Leg part 12c Arc part 12d Surface part of a hollow seal part 12e Interior of a hollow seal part 13 Lip 14 Assembly lip 15 Core 16 Decorative trim 30 Weather strip 31 Mounting base 31a Car outer wall 31b Bottom wall 32 Hollow seal part C Corner part F Lifting N Soft material T Double-sided adhesive tape W

Claims

A weatherstrip that is attached to a flange formed along the door opening edge of an automobile body and is elastically sealed to a door panel,
The vehicle outer wall and the bottom wall have a substantially L-shaped cross section, and the vehicle outer wall is attached to the flange with a double-sided adhesive tape,
A circular seal portion that bulges and curves outside the mounting base, and a hollow seal portion that elastically contacts the door panel;
A weather strip for an automobile, wherein a wall thickness on an end side of a vehicle outer wall portion of the mounting base portion is made thinner than a wall thickness on a bottom wall portion side.

A weatherstrip that is attached to a flange formed along the door opening edge of an automobile body and is elastically sealed to a door panel,
The vehicle outer wall and the bottom wall have a substantially L-shaped cross section, and the vehicle outer wall is attached to the flange with a double-sided adhesive tape,
A circular seal portion that bulges and curves outside the mounting base, and a hollow seal portion that elastically contacts the door panel;
A weather strip for an automobile, wherein the thickness of the mounting base portion on the vehicle outer side wall portion is gradually reduced from the bottom wall portion side to the end portion side.

A weatherstrip that is attached to a flange formed along the door opening edge of an automobile body and is elastically sealed to a door panel,
A mounting base portion having a substantially U-shaped cross section composed of an outer wall portion, a bottom wall portion, and an inner wall portion of the vehicle, and provided with a plurality of lips sandwiching the flange on the inner side of both side wall portions;
A circular seal portion that bulges and curves outside the mounting base, and a hollow seal portion that elastically contacts the door panel;
A weather strip for an automobile, wherein a wall thickness on an end side of a vehicle outer wall portion of the mounting base portion is made thinner than a wall thickness on a bottom wall portion side.

A weatherstrip that is attached to a flange formed along the door opening edge of an automobile body and is elastically sealed to a door panel,
A mounting base portion having a substantially U-shaped cross section composed of an outer wall portion, a bottom wall portion, and an inner wall portion of the vehicle, and provided with a plurality of lips sandwiching the flange on the inner side of both side wall portions;
A circular seal portion that bulges and curves outside the mounting base, and a hollow seal portion that elastically contacts the door panel;
A weather strip for an automobile, wherein the thickness of the mounting base portion on the vehicle outer side wall portion is gradually reduced from the bottom wall portion side to the end portion side.

The automotive weather strip according to claim 3 or 4, wherein a thickness of an end side of the mounting base portion on a vehicle inner side wall portion is made thinner than a thickness of a bottom wall portion side.