JP2011111109A - Weather strip with water stop sponge, and method for manufacturing the same - Google Patents

Weather strip with water stop sponge, and method for manufacturing the same Download PDF

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JP2011111109A
JP2011111109A JP2009271372A JP2009271372A JP2011111109A JP 2011111109 A JP2011111109 A JP 2011111109A JP 2009271372 A JP2009271372 A JP 2009271372A JP 2009271372 A JP2009271372 A JP 2009271372A JP 2011111109 A JP2011111109 A JP 2011111109A
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side wall
trim
sponge
weather strip
section
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Satoshi Inagaki
聡 稲垣
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Toyoda Gosei Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip with water stop sponge which is formed by easily bending a flatly extruded product, and a method for manufacturing the same. <P>SOLUTION: The weather strip with water stop sponge includes a trip portion having a substantially U-shaped section, the trip portion having an interior side wall, an exterior side wall and a bottom wall connecting both the side walls to each other; a hollow seal portion provided to project upwardly from the bottom wall of the trim portion, onto which the periphery of a door is pressed; and a sub-seal lip which is protruded from the exterior side wall of the trim portion, and abuts on the periphery of an opening of a body in the vicinity of a flange to seal it. A core material is embedded in the trim portion, flange holding rips are extended respectively from the inside surfaces of the exterior side wall and the interior side wall toward the inside of the substantially U-shaped section, and water stop sponge is provided inside the bottom wall. The water stop sponge is formed in substantially a parallelogram by allowing a support projection extended from the inner surface of the interior side wall of the trim portion to abut on the interior side wall having substantially a rectangular shape. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、自動車の車体の例えばドア開口縁やトランクルーム開口縁などに沿って形成されたフランジに挿入される止水スポンジ付ウエザストリップ及びその製造方法に関するものである。   The present invention relates to a weather strip with a water stop sponge that is inserted into a flange formed along, for example, a door opening edge or a trunk room opening edge of an automobile body, and a method for manufacturing the weather strip.

図6に示すように、自動車のバックドア5に対向するボディ1の開口部周縁6には、ボディパネル(8、9)の端部が折り曲げられ、接合されて形成されたフランジ7が形成され、フランジ7にはドア閉時にバックドア5に弾接する中空シール部40が一体成形されたウエザストリップ100が取り付けられている。
ウエザストリップ100は、図7に示すように、取付基部としてのトリム部10を有し、トリム部10は、断面略U字形で、その開口側からフランジ7の先端7aへ挿入されて取付られるようになっている。すなわち、トリム部10は、車外側側壁11、車内側側壁12及び両側壁11、12を連結する底壁13とからなり、断面略U字形をなしている。そして、両側壁11、12からはトリム部10の内側に向かって上記フランジ7を保持する複数のフランジ保持リップ14〜17が形成されている。また、車外側側壁11の外側にはサブシールリップ18が形成されている。さらに、トリム部10には補強用の芯材20が埋設されている。
また、従来のウエザストリップ100においては、断面略U字形の底壁13の内側に、フランジ7の先端7aに接して先端7aを包み込むシーラント50が充填され、フランジ7の防錆とくぐり水防止が図られているものがある。
As shown in FIG. 6, a flange 7 formed by bending and joining the end portions of the body panels (8, 9) is formed on the opening periphery 6 of the body 1 facing the back door 5 of the automobile. The weather strip 100 integrally formed with the hollow seal portion 40 that elastically contacts the back door 5 when the door is closed is attached to the flange 7.
As shown in FIG. 7, the weather strip 100 has a trim portion 10 as a mounting base, and the trim portion 10 has a substantially U-shaped cross section and is inserted and attached to the tip 7 a of the flange 7 from the opening side. It is like that. That is, the trim portion 10 includes a vehicle outer side wall 11, a vehicle inner side wall 12 and a bottom wall 13 that connects both side walls 11, 12, and has a substantially U-shaped cross section. A plurality of flange holding lips 14 to 17 for holding the flange 7 are formed from the side walls 11 and 12 toward the inside of the trim portion 10. A sub seal lip 18 is formed outside the vehicle outer side wall 11. Further, a reinforcing core member 20 is embedded in the trim portion 10.
Further, in the conventional weather strip 100, the sealant 50 which is in contact with the tip 7a of the flange 7 and wraps the tip 7a is filled inside the bottom wall 13 having a substantially U-shaped cross section. There is something that is planned.

しかし、シーラント50を充填したものは、熱冷変化に弱く、再成が不可能である。また、シーラント50の充填量を一定にしても広がりの違いからフランジ7の先端7aを包み込むシーラント50の量にバラツキが生じるという問題がある。
そこで、図8に示すように、シーラント50の代替としてシーラント50の配置位置と同じ断面略U字形の底壁13の内側に例えば低モジュラススポンジなどの止水用のスポンジ(止水スポンジ)30が取り付けられたウエザストリップ100が知られている。これによれば、上述したシーラント50の有する問題点が解決される。
However, those filled with the sealant 50 are vulnerable to changes in heat and cooling and cannot be regenerated. Further, there is a problem that even if the filling amount of the sealant 50 is constant, there is a variation in the amount of the sealant 50 that wraps around the tip 7a of the flange 7 due to the difference in spread.
Therefore, as shown in FIG. 8, as an alternative to the sealant 50, a waterproof sponge (water-proof sponge) 30 such as a low modulus sponge is provided inside the bottom wall 13 having a substantially U-shaped cross section at the same position as the sealant 50. An attached weatherstrip 100 is known. According to this, the problems of the sealant 50 described above are solved.

ところが、単純にシーラント50と止水スポンジ30を置き換えると、止水スポンジ30の変形量がシーラント50と比較して小さいためフランジ7の先端7aの包込み不足が生じてしまう。このため、2枚又は3枚の板金パネルを重ね合わせたフランジ7においては、合わせにより横方向(幅方向)に段差、あるいは縦方向に段差があるとフランジ7の全体を完全にシールすることができず、その結果、くぐり水の防止ができない場合がある。そのため、止水スポンジ30の形状を底壁13の内側から左右両側壁11、12内側にまでそれぞれ伸ばして上記の問題に対応できるようにしたウエザストリップ100が提案されている。   However, if the sealant 50 and the water-stopping sponge 30 are simply replaced, the amount of deformation of the water-stopping sponge 30 is smaller than that of the sealant 50, resulting in insufficient wrapping of the tip 7a of the flange 7. For this reason, in the flange 7 in which two or three sheet metal panels are overlapped, if there is a step in the horizontal direction (width direction) or a step in the vertical direction due to the alignment, the entire flange 7 can be completely sealed. As a result, it may not be possible to prevent passing water. Therefore, a weather strip 100 has been proposed in which the shape of the water-stopping sponge 30 is extended from the inside of the bottom wall 13 to the insides of the left and right side walls 11 and 12 to cope with the above problem.

しかしながら、このウエザストリップ100には、以下に示す製造上問題がある。
すなわち、トリム部10は、断面略直線状(平状態)に押し出された後、止水スポンジ30を挾むようにしてベンダーローラー70の先端70aを当て内側に単純に折り曲げて断面略U字形にする工法であったが、折り曲げ部分に止水スポンジ30が存在すると、図9に示すように、ベンダーローラー70の先端70aが止水スポンジ30を挾む位置になるのではなく、止水スポンジ30内に入ってしまうので、止水スポンジ30が圧縮されて破れるおそれがある。
また、その状態で折り曲げて断面略U字形にした場合には、トリム部10の両肩のR部を均一に確保できず、さらに止水スポンジ30の屈曲部に応力が集中して柔軟性に欠けるという問題がある。
However, the weather strip 100 has the following manufacturing problems.
In other words, the trim part 10 is a method in which, after being extruded in a substantially linear cross section (flat state), the tip 70a of the bender roller 70 is simply folded inward so as to sandwich the water-stopping sponge 30, and the cross section is substantially U-shaped. However, when the water-stopping sponge 30 is present at the bent portion, the tip 70a of the bender roller 70 does not reach the water-stopping sponge 30 as shown in FIG. Therefore, the water-stop sponge 30 may be compressed and broken.
In addition, when bent in this state to have a substantially U-shaped cross section, the R portions on both shoulders of the trim portion 10 cannot be ensured uniformly, and stress is concentrated on the bent portion of the waterstop sponge 30 for flexibility. There is a problem of lacking.

そのため、図10に示すように、止水スポンジ30に屈曲部が生じないように分断して、断面略台形として各壁の内側に配置していた(例えば、特許文献1参照)。   For this reason, as shown in FIG. 10, the water-stop sponge 30 is divided so as not to have a bent portion, and is arranged inside each wall as a substantially trapezoidal cross section (see, for example, Patent Document 1).

特許3706205号公報Japanese Patent No. 3706205

しかしながら、この分断された止水スポンジを備えたウエザストリップ100においても、図11に示すように、ボディ1の開口部周縁6のコーナー部分に装着される時に、トリム部10が転び、フランジ7の先端7aが止水スポンジの分断位置になる恐れがあり、フランジ7の先端7aの包込み不足が生じてしまう。   However, even in the weather strip 100 provided with the divided water-stopping sponge, as shown in FIG. 11, the trim portion 10 rolls down when it is attached to the corner portion of the opening peripheral edge 6 of the body 1, and the flange 7 There is a possibility that the leading end 7a of the flange 7 becomes the dividing position of the water-stopping sponge, resulting in insufficient wrapping of the leading end 7a of the flange 7.

また、図12に示すように、ボディパネル(アウターパネル)8を長手方向において連続させる時に、2枚のパネルを重ね合わせたフランジ7において、合わせにより横方向(幅方向)に段差が生じた場合、トリム部10の車外側側壁11の内面に形成された分断された止水スポンジ30では、フランジ合わせの表面だけを覆うようにシールし、段差はトンネル状に溝として残るため、溝の先端(フランジ7の先端7a)をシールすることができず、その結果、くぐり水の防止ができないという不具合がある。   In addition, as shown in FIG. 12, when the body panel (outer panel) 8 is continued in the longitudinal direction, a step occurs in the lateral direction (width direction) due to the alignment in the flange 7 in which the two panels are overlapped. The separated water-stop sponge 30 formed on the inner surface of the outer side wall 11 of the trim portion 10 seals so as to cover only the flange-matching surface, and the step remains as a groove in a tunnel shape. The front end 7a) of the flange 7 cannot be sealed, and as a result, there is a problem that it is impossible to prevent the underwater.

本発明は上記問題点を解決するためになされたものであって、その目的は、フランジ合わせのあるボディにも対応可能な止水スポンジ付ウエザストリップを提供すること、及び、特にコスト高になることなく、平押出しされたものを簡易に折り曲げることにより止水スポンジ付ウエザストリップを製造しうる方法を提供することにある。   The present invention has been made to solve the above problems, and an object of the present invention is to provide a weather strip with a water-stop sponge that can be applied to a flange-fitted body, and particularly to increase the cost. Thus, it is an object of the present invention to provide a method capable of producing a weatherstrip-attached weather strip by simply bending a flat extruded product.

以下、前記目的を解決するのに適した各手段につき、項分けして説明する。なお、必要に応じて対応する手段に特有の作用効果等を付記する。   Hereinafter, each means suitable for solving the above-described object will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

手段1.自動車のボディの開口部周縁のフランジに保持され、車外側側壁、車内側側壁及び両側壁を連結する底壁を備える断面略U字形のトリム部と、前記トリム部の底壁から上方に突出して設けられ、前記ボディの開口部を開閉する開閉部材の閉時に該開閉部材の周縁に押付けられる中空シール部と、前記トリム部の車外側側壁から突出して前記フランジ近傍のボディの開口部周縁に当接してシールするサブシールリップとを有し、前記トリム部には、高分子材料の被覆材内部に芯材が埋設され、車外側側壁と車内側側壁の内面から断面略U字形の内側にそれぞれフランジ保持リップが延設され、底壁の内側に止水スポンジが設けられたウエザストリップであって、
前記止水スポンジは、その車内側側面に前記トリム部の車内側側壁の内面から延出された支持突起を当接させることにより断面略平行四辺形に形成されていることを特徴とする止水スポンジ付ウエザストリップ。
Means 1. A trim part having a substantially U-shaped cross section, which is held by a flange at the periphery of the opening of the body of the automobile and has a bottom wall connecting the outer side wall, the inner side wall and both side walls, and protrudes upward from the bottom wall of the trim part. A hollow seal portion that is pressed against the periphery of the opening and closing member when the opening and closing member that opens and closes the opening of the body is closed, and protrudes from the vehicle outer side wall of the trim portion and contacts the periphery of the opening of the body near the flange. A sub-seal lip that seals in contact with each other, and a core material is embedded in the trim material inside the coating material of the polymer material, and the inner side of the outer side wall and the inner side wall of the trim part has a substantially U-shaped cross section inside. A weather strip with a flange holding lip extended and a water stop sponge provided inside the bottom wall,
The water stop sponge is formed in a substantially parallelogram cross-section by bringing a support projection extended from the inner surface of the vehicle inner side wall of the trim portion into contact with the vehicle inner side surface. Weather strip with sponge.

手段1によれば、止水スポンジは、その車内側側面に前記トリム部の車内側側壁の内面から延出された支持突起を当接させることにより断面略平行四辺形に形成されている。
このため、トリム部がボディの開口部周縁のコーナー部に湾曲させて装着される時の転びに対しても、フランジの先端が位置する部位に止水スポンジを配置させることができ、防錆及びくぐり水の防止ができる。
According to the means 1, the water stop sponge is formed in a substantially parallelogram in cross section by bringing a support projection extending from the inner surface of the vehicle inner side wall of the trim portion into contact with the vehicle inner side surface.
For this reason, even when the trim part is bent and attached to the corner part of the periphery of the opening part of the body, the water-stopping sponge can be arranged at the portion where the tip of the flange is located, Can prevent underwater.

手段2.前記支持突起は、前記トリム部と同じ材質で形成され、その突出量は前記トリム部の肩部の曲げRのR寸法以上で車内側フランジ保持リップの突出長さ寸法よりも小さく形成されていることを特徴とする手段1に記載の止水スポンジ付ウエザストリップ。   Mean 2. The support protrusion is formed of the same material as the trim part, and the protrusion amount is equal to or greater than the R dimension of the bend R of the shoulder part of the trim part and smaller than the protrusion length dimension of the vehicle interior flange holding lip. A weatherstrip with a water-stop sponge according to means 1, characterized in that.

手段2によれば、前記支持突起は、前記トリム部と同じ材質で形成され、その突出量は前記トリム部の肩部の曲げRのR寸法以上で車内側フランジ保持リップの突出長さ寸法より小さく、所定の突出量で形成されているので、底壁の幅で形成されている断面略長方形の止水スポンジを確実に断面略平行四辺形に変形させることができ、フランジの先端が位置する部位に確実に止水スポンジを配置させることができる。   According to the means 2, the support protrusion is formed of the same material as the trim part, and the protruding amount is equal to or larger than the R dimension of the bend R of the shoulder part of the trim part and is larger than the protruding length dimension of the inboard flange holding lip. Since it is small and formed with a predetermined amount of protrusion, the waterproof sponge having a substantially rectangular cross section formed by the width of the bottom wall can be reliably deformed into a substantially parallelogram cross section, and the tip of the flange is located The water-stop sponge can be surely arranged at the site.

手段3.自動車のボディの開口部周縁のフランジに保持され、車外側側壁、車内側側壁及び両側壁を連結する底壁を備える断面略U字形のトリム部と、前記トリム部の底壁から上方に突出して設けられ、前記ボディの開口部を開閉する開閉部材の閉時に該開閉部材の周縁が押付けられる中空状のシール部と、前記トリム部の車外側側壁から突出して前記フランジ近傍のボディの開口部周縁に当接してシールするサブシールリップとを有し、前記トリム部には、高分子材料の被覆材内部に芯材が埋設され、車外側側壁と車内側側壁の内面から断面略U字形の内側にそれぞれフランジ保持リップが延設され、底壁の内側に止水スポンジが設けられたウエザストリップの製造方法であって、前記トリム部を平板状又は略へ字状に芯材を埋設させて、中空シール部とともに高分子材料の被覆材を押出す押出工程と、前記トリム部をベンダーローラーによって断面略U字形に変形させるU字曲げ工程とを備え、該U字曲げ工程において、前記トリム部の車内側側壁の内面から延出された支持突起の先端を、前記止水スポンジの断面略長方形の車内側側面に当接させて、該止水スポンジを断面略平行四辺形に変形させて形成することを特徴とする止水スポンジ付ウエザストリップの製造方法。   Means 3. A trim part having a substantially U-shaped cross section, which is held by a flange at the periphery of the opening of the body of the automobile and has a bottom wall connecting the outer side wall, the inner side wall and both side walls, and protrudes upward from the bottom wall of the trim part. A hollow seal portion that is provided and that opens and closes an opening and closing member that opens and closes the opening of the body; and a periphery of the opening and closing member that protrudes from the outer side wall of the trim portion and protrudes from the vehicle outer side wall. A sub-seal lip that abuts against and seals, and a core material is embedded in the trim material inside the trim material, and the inner side of the vehicle outer side wall and the inner side wall of the vehicle has a substantially U-shaped cross section. A weather strip manufacturing method in which a flange holding lip is extended and a water stop sponge is provided on the inner side of the bottom wall, wherein the trim portion is embedded in a flat plate shape or a substantially square shape. Hollow sea An extrusion process for extruding the coating material of the polymer material together with the part, and a U-shaped bending process for deforming the trim part into a substantially U-shaped cross section by a bender roller, and in the U-shaped bending process, the inside of the trim part The tip of the support protrusion extending from the inner surface of the side wall is brought into contact with the vehicle inner side surface of the water-stopping sponge having a substantially rectangular cross section, and the water-stopping sponge is deformed into a substantially parallelogram in cross section. A method for producing a weather strip with a water-stopping sponge characterized.

手段3によれば、トリム部を平板状又は略へ字状に芯材を埋設させて、中空シール部とともに高分子材料の被覆材を押出す押出工程と、トリム部をベンダーローラーによって断面略U字形に変形させるU字曲げ工程とを備え、このU字曲げ工程において、トリム部の車内側側壁の内面から延出された支持突起の先端を、止水スポンジの断面略長方形の車内側側面に当接させて、この止水スポンジを断面略平行四辺形に変形させて形成しているので、U字曲げ工程で止水スポンジがベンダーローラーによって破れたり、曲げ加工を阻害する事はない。また、トリム部をU字形の曲げ加工した後には、止水スポンジがトリム部の車外側の肩部の内側に配置されているため、トリム部がコーナー部で転んだ場合でも、フランジの先端を止水スポンジで確実に包み込むことができ、防錆及びくぐり水の防止ができる。
ちなみに、トリム部のコーナー部での「転び」は、環状に形成されたウエザストリップの中空シール部が、ボディへの取付時においてボディの開口部の内周側(車内側)へ短縮経路を取ろうとするためや、車外側側壁から突出しているサブシールリップからの反力が影響しているため、開口部の内周側(車内側)にだけ転びが生じる。そのため、止水スポンジはトリム部の車外側の肩部の内側に配置できるように断面略平行四辺形に変形させられるものである。
According to the means 3, the trim part is embedded in a flat plate shape or a substantially U-shaped core material, the extrusion process of extruding the coating material of the polymer material together with the hollow seal part, and the trim part is substantially U-shaped in cross section by the bender roller. And a U-shaped bending step for deforming into a U-shape. In this U-shaped bending step, the tip of the support protrusion extended from the inner surface of the inner side wall of the trim portion is formed on the inner side surface of the waterproof sponge having a substantially rectangular cross section. Since the water-stopping sponge is deformed and formed into a substantially parallelogram in cross section, the water-stopping sponge is not torn by the bender roller in the U-shaped bending process, and the bending process is not hindered. In addition, after the U-shaped bend of the trim part, the water stop sponge is placed inside the shoulder part of the trim part outside the car, so even if the trim part rolls at the corner part, It can be securely wrapped with a water-stop sponge, preventing rust and passing water.
By the way, the “rolling” at the corner of the trim part is because the hollow seal part of the weather strip formed in an annular shape has a shortened path to the inner peripheral side (inside the vehicle) of the opening of the body when attached to the body. Since the reaction force from the sub-seal lip protruding from the vehicle outer side wall influences to try to take, the rolling occurs only on the inner peripheral side (vehicle inner side) of the opening. Therefore, the waterstop sponge is deformed into a substantially parallelogram in cross section so that it can be placed inside the shoulder of the trim part on the vehicle outer side.

本発明の止水スポンジ付ウエザストリップでは、止水スポンジをトリム部の車外側の肩部の内側に配置できるように断面略平行四辺形に形成されているものであり、トリム部がコーナー部で転んだ場合でも、フランジの先端を止水スポンジで確実に包み込むことができ、防錆及びくぐり水の防止ができるものである。また、その製造においては、止水スポンジを断面略長方形状に押出し成形しておき、トリム部のU字曲げ工程において、トリム部の車内側側壁の内面から延出された支持突起の先端を、止水スポンジの断面略長方形の車内側側面に当接させて、断面略平行四辺形に変形させて形成しているため、比較的簡単に形成することができる。
その結果、フランジ合わせのあるボディにも対応可能な止水スポンジ付ウエザストリップを得ることができ、また、特にコスト高になることなく、平押出しされたものを簡易に折り曲げることができる止水スポンジ付ウエザストリップの製造方法を得ることができる。
In the weather strip with a waterproof sponge according to the present invention, the waterproof sponge is formed in a substantially parallelogram in cross section so that the waterproof sponge can be arranged inside the shoulder of the trim portion outside the vehicle. Even if it rolls over, the tip of the flange can be securely wrapped with a water-stop sponge, and rust prevention and prevention of underwater can be achieved. Further, in the production, the water-stopping sponge is extruded and molded into a substantially rectangular cross section, and in the U-shaped bending process of the trim part, the tip of the support protrusion extended from the inner surface of the inner side wall of the trim part, Since it is formed by abutting the vehicle interior side surface of the waterstop sponge having a substantially rectangular cross section and deforming it into a substantially parallelogram in cross section, it can be formed relatively easily.
As a result, it is possible to obtain a weather strip with a water stop sponge that can be applied to a body with a flange alignment, and it is also possible to easily fold a flat extruded product without being particularly expensive. A method for producing a weather strip with a sponge can be obtained.

図1は本発明の実施形態におけるU字状に折り曲げられた状態でのウエザストリップを示す一部切欠き断面図である。FIG. 1 is a partially cutaway cross-sectional view showing a weather strip in a state of being bent into a U shape in an embodiment of the present invention. 図2は本発明の実施形態における平状態でのウエザストリップを示す一部切欠き断面図である。FIG. 2 is a partially cutaway sectional view showing a weather strip in a flat state according to an embodiment of the present invention. 図3は本発明の実施形態におけるU字状に折り曲げられる途中の状態でのウエザストリップを示す一部切欠き断面図である。FIG. 3 is a partially cutaway cross-sectional view showing the weather strip in the middle of being bent into a U shape in the embodiment of the present invention. 図4は本発明の実施形態におけるU字状に折り曲げられた状態でのウエザストリップを示す一部切欠き断面図であり、フランジの板厚が厚い部位での図である。FIG. 4 is a partially cutaway cross-sectional view showing the weather strip in a state of being bent into a U-shape in the embodiment of the present invention, and is a view at a portion where the plate thickness of the flange is thick. 図5は本発明の製造工程を示す概略説明図である。FIG. 5 is a schematic explanatory view showing the manufacturing process of the present invention. 図6は自動車のバックドアを後方から見た正面図である。FIG. 6 is a front view of the back door of the automobile as viewed from the rear. 図7は従来のウエザストリップを示す断面図である。FIG. 7 is a sectional view showing a conventional weather strip. 図8は別の従来のウエザストリップを示す一部切欠き断面図である。FIG. 8 is a partially cutaway sectional view showing another conventional weather strip. 図9はまた別の従来のウエザストリップを示す一部切欠き断面図である。FIG. 9 is a partially cutaway sectional view showing another conventional weather strip. 図10はさらに別の従来のウエザストリップを示す一部切欠き断面図である。FIG. 10 is a partially cutaway sectional view showing still another conventional weather strip. 図11は図10の従来のウエザストリップの不具合を示す一部切欠き断面図である。FIG. 11 is a partially cutaway cross-sectional view showing a defect of the conventional weather strip of FIG. 図12は図10の従来のウエザストリップのフランジ部位での不具合を示す一部切欠き断面図である。FIG. 12 is a partially cutaway cross-sectional view showing a defect in the flange portion of the conventional weather strip of FIG.

以下に、本発明の実施形態について図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図1は、本発明の1実施形態を示すものであり、ウエザストリップ100Aの断面図であり、図6のA−A線に沿った部位における断面図である。なお、図6は、自動車のバックドアを後方から見た正面図であり、バックドア5における自動車のボディ1の開口部周縁6とバックドア5の関係を示すものである。
本発明の1実施形態をバックドア5に対向する開口部の周縁に装着されるウエザストリップ100Aを例にとり説明するが、本発明は、トランクルーム、サイドドア開口部、ルーフ開口部、エンジンルーム等の広く自動車のボディ1の開口部をシールするウエザストリップに使用することができる。
FIG. 1 shows an embodiment of the present invention, which is a cross-sectional view of a weather strip 100A, and a cross-sectional view taken along a line AA in FIG. FIG. 6 is a front view of the back door of the automobile as viewed from the rear, and shows the relationship between the opening peripheral edge 6 of the body 1 of the automobile and the back door 5 in the back door 5.
One embodiment of the present invention will be described taking a weather strip 100A attached to the periphery of an opening facing the back door 5 as an example, but the present invention is directed to a trunk room, a side door opening, a roof opening, an engine room, etc. It can be widely used as a weather strip for sealing an opening of a body 1 of an automobile.

本実施形態のウエザストリップ100Aは、図1乃至図4に示すように、自動車のボディ1の開口部周縁6のフランジ7に装着されるトリム部10Aと、この開口部を開閉する開閉部材としてのバックドア5に当接してシールする中空シール部40から形成される。
なお、図1中、8はボディ1のアウターパネル、9はボディ1のインナーパネルであり、両パネル8、9の端部に折り曲げられたフランジ7が形成されている。フランジ7は、1枚のパネルで構成されていても良く、図1に示すように2枚のパネル8、9が重ね合わされて構成されていても良い。
また、図4はフランジ7の板厚が厚い部分(アウターパネル8、インナーパネル9の間に補強パネルが設けられた部分)に取付けられた状態を示すものである。この場合においても、フランジ7の先端7aは車外側にずらされた断面略平行四辺形の止水スポンジ30Aによって確実にシールされている。
As shown in FIGS. 1 to 4, the weather strip 100 </ b> A according to the present embodiment includes a trim portion 10 </ b> A attached to the flange 7 on the periphery 6 of the opening of the body 1 of the automobile, and an opening / closing member that opens and closes the opening. It forms from the hollow seal part 40 which contacts and seals the back door 5 of this.
In FIG. 1, 8 is an outer panel of the body 1, and 9 is an inner panel of the body 1, and a bent flange 7 is formed at the ends of both the panels 8 and 9. The flange 7 may be composed of a single panel, or may be composed of two panels 8 and 9 overlapped as shown in FIG.
FIG. 4 shows a state where the flange 7 is attached to a thick part (a part where a reinforcing panel is provided between the outer panel 8 and the inner panel 9). Even in this case, the tip 7a of the flange 7 is reliably sealed by the water-stopping sponge 30A having a substantially parallelogram cross-section shifted to the vehicle outer side.

トリム部10Aは、車外側側壁11と、車内側側壁12と、両側壁11、12を連結する底壁13からなり、断面略U字形をなしている。車外側側壁11、車内側側壁12と、底壁13の内部には、板金製等の骨片からなる芯材(インサート)20が埋設され、ゴム又は熱可塑性エラストマーの高分子材料の被覆材で被覆されて形成されている。   10 A of trim parts consist of the vehicle outer side wall 11, the vehicle inner side wall 12, and the bottom wall 13 which connects both the side walls 11 and 12, and has comprised the cross-sectional substantially U shape. A core material (insert) 20 made of a bone piece made of sheet metal or the like is embedded inside the vehicle outer side wall 11, the vehicle inner side wall 12, and the bottom wall 13, and is covered with a polymer material of rubber or thermoplastic elastomer. It is formed by coating.

また、両側壁11、12からはトリム部10Aの断面略U字形の内側に向かって上記フランジ7を保持する複数のフランジ保持リップ14〜17がそれぞれ形成されている。車外側側壁11の外側には、サブシールリップ18が形成されている。さらに、トリム部10Aの底壁13の内側には、断面略長方形状の低モジュラススポンジなどの止水スポンジ30Aが一体に形成されている。そして、この止水スポンジ30Aは、トリム部10Aの車内側側壁12の内面から延出された支持突起19の先端を、止水スポンジ30Aの断面略長方形の車内側側面に当接させて、断面略平行四辺形に変形させて形成している。   Further, a plurality of flange holding lips 14 to 17 for holding the flange 7 are formed from both side walls 11 and 12 toward the inside of the substantially U-shaped cross section of the trim portion 10A. A sub seal lip 18 is formed outside the vehicle outer side wall 11. Further, a water-stop sponge 30A such as a low modulus sponge having a substantially rectangular cross section is integrally formed inside the bottom wall 13 of the trim portion 10A. The water-stopping sponge 30A has a cross-section in which the tip of the support protrusion 19 extending from the inner surface of the vehicle interior side wall 12 of the trim portion 10A is brought into contact with the vehicle inner side surface of the water-stopping sponge 30A. It is formed by deforming into a substantially parallelogram.

なお、本実施形態では、トリム部10Aの被覆材は比重が0.7〜1.2のEPDMソリッドゴム(比重1.0〜1.2)又は微発泡ゴム(比重0.7〜0.99)で形成され、支持突起19も同じ被覆材の材料で形成されている。また、支持突起19の突出量は、トリム部10Aの肩部の曲げRのR寸法よりも長く、車内側フランジ保持リップ17よりも短く形成され、具体的には、1mmより大きく2.5mm以下が好ましい。本実施形態では1.5mmで形成されている。
一方、止水スポンジ30Aは、比重0.1〜0.4の低モジュラススポンジによって形成されており、幅方向の寸法は、トリム部10Aの底壁13の内側の幅寸法より若干小さく、高さ方向の寸法は、上記支持突起19が設けられた位置に対応した高さで、トリム部10Aを平板状又は略へ字状に押出し成形した時には、断面略長方形で押出し成形されている。
In the present embodiment, the covering material of the trim portion 10A is EPDM solid rubber (specific gravity 1.0 to 1.2) or fine foam rubber (specific gravity 0.7 to 0.99) having a specific gravity of 0.7 to 1.2. The support protrusion 19 is also formed of the same covering material. Further, the protruding amount of the support protrusion 19 is longer than the R dimension of the bend R of the shoulder portion of the trim portion 10A and shorter than the inside flange holding lip 17, and specifically, greater than 1 mm and less than 2.5 mm. Is preferred. In this embodiment, it is formed with 1.5 mm.
On the other hand, the waterstop sponge 30A is formed of a low modulus sponge having a specific gravity of 0.1 to 0.4, and the width dimension is slightly smaller than the width dimension inside the bottom wall 13 of the trim portion 10A. The dimension in the direction is a height corresponding to the position at which the support protrusion 19 is provided, and when the trim portion 10A is extruded into a flat plate shape or a substantially square shape, it is extruded with a substantially rectangular cross section.

本実施形態の止水スポンジ付ウエザストリップ100Aでは、止水スポンジ30Aをトリム部10Aの車外側の肩部の内側に配置できるように断面略平行四辺形に形成されているため、取付時にトリム部10Aがボディ1のコーナー部で転んだ場合でも、ボディ1のフランジ7の先端7aを止水スポンジ30Aで確実に包み込むことができ、防錆及びくぐり水の防止ができる。   In the weather strip 100A with a water stop sponge of the present embodiment, the water stop sponge 30A is formed in a substantially parallelogram cross section so that it can be placed inside the shoulder of the trim part 10A outside the vehicle. Even when the part 10A rolls at the corner of the body 1, the tip 7a of the flange 7 of the body 1 can be reliably wrapped with the water-stopping sponge 30A, and rust prevention and underwater prevention can be prevented.

次に本実施形態の止水スポンジ付ウエザストリップ100Aの製造方法について図2、図3、図5に基づいて説明する。
図5に示すように、ロール状に巻かれた平板状の芯材20をゴム押出装置60に供給して芯材20の周りにゴムの被覆材を形成して、ダイスから押出す押出工程Eを備えている。この押出工程E直後での止水スポンジ付ウエザストリップ100Aの断面は、図2に示すように、トリム部10Aが平板状である。なお、ゴム押出装置60は、トリム部10AのソリッドEPDMゴム被覆材用のゴム押出機61と、中空シール部40のスポンジゴム用のゴム押出機62と、止水スポンジ30A用のゴム押出機63を備えている。また、この押出工程E直後の止水スポンジ付ウエザストリップ100Aは、フランジ保持リップ14〜17、サブシールリップ18、支持突起19、中空シール部40及び止水スポンジ30Aを備えている。
その後、ゴムの被覆材等を加硫して形状を安定させるために加硫工程Vの加硫槽64に送られる。なお、被覆材が熱可塑性エラストマーの場合には、この加硫工程Vの代わりに冷却工程(冷却槽65)が配置されている。
Next, the manufacturing method of the weather strip 100A with a water stop sponge of this embodiment is demonstrated based on FIG.2, FIG.3, FIG.5.
As shown in FIG. 5, an extrusion process E in which a flat core material 20 wound in a roll shape is supplied to a rubber extrusion device 60 to form a rubber covering around the core material 20 and is extruded from a die. It has. As shown in FIG. 2, the cross section of the weatherstrip-equipped weather strip 100 </ b> A immediately after the extrusion step E is such that the trim portion 10 </ b> A has a flat plate shape. The rubber extrusion device 60 includes a rubber extruder 61 for the solid EPDM rubber coating material of the trim portion 10A, a rubber extruder 62 for the sponge rubber of the hollow seal portion 40, and a rubber extruder 63 for the water-stop sponge 30A. It has. The weatherstrip-equipped weather strip 100A immediately after the extrusion step E includes flange holding lips 14 to 17, a sub seal lip 18, a support protrusion 19, a hollow seal portion 40, and a water stop sponge 30A.
Thereafter, it is sent to the vulcanizing tank 64 of the vulcanizing step V in order to vulcanize the rubber covering material and stabilize the shape. In the case where the coating material is a thermoplastic elastomer, a cooling step (cooling tank 65) is arranged instead of the vulcanization step V.

その後、ゴム被覆材等の形状が安定された止水スポンジ付ウエザストリップ100Aは、トリム部10Aをベンダーローラー70によって断面略U字形に変形させるU字曲げ工程Rのベンダー装置66に搬送され、ベンダーローラー70等によって平板状から断面略U字形に変形させられる。
このU字曲げ工程Rにおいて、トリム部10Aの車内側側壁12予定部位の内面から延出して形成されていた支持突起19の先端を、底壁13予定部位に形成されている止水スポンジ30Aの断面略長方形の車内側側面に当接させて、この止水スポンジ30Aを断面略平行四辺形に変形させる。
なお、ベンダーローラー70は、支持突起19の先端がこのベンダーローラー70に接触する手前の位置までのベンダー装置66内に配置されており、両側壁11、12が平行になる最終的なU字曲げにおいては、このベンダーローラー70は存在しておらず、別のローラーによって両側壁11、12を挟むようにして平行になるように曲げ変形させている。
Thereafter, the weatherstrip-attached weatherstrip 100A having a stable shape such as a rubber covering material is conveyed to the bender device 66 in the U-shaped bending process R in which the trim portion 10A is deformed into a substantially U-shaped cross section by the bender roller 70. It is deformed from a flat plate shape to a substantially U-shaped cross section by a bender roller 70 or the like.
In this U-shaped bending process R, the tip of the support protrusion 19 formed to extend from the inner surface of the trim part 10A on the vehicle inner side wall 12 is formed on the bottom surface 13 of the water-stop sponge 30A. The water stop sponge 30A is deformed into a substantially parallelogram in cross section by contacting the vehicle inner side surface having a substantially rectangular cross section.
The bender roller 70 is disposed in the bender device 66 up to a position just before the tip of the support protrusion 19 contacts the bender roller 70, and the final U-shaped bend in which both side walls 11 and 12 are parallel to each other. In FIG. 5, the bender roller 70 does not exist, and is bent and deformed so that the both side walls 11 and 12 are sandwiched by another roller so as to be parallel.

その後、トリム部10Aが、断面略U字形にされた止水スポンジ付ウエザストリップ100Aは、切断装置67まで搬送され、所定長さで切断される。ちなみに、所定長さの止水スポンジ付ウエザストリップ100Aは、その後、その両端末が型成形によって接続され環状のウエザストリップとされる。   Thereafter, the weather strip 100A with the water-stop sponge having the trim portion 10A having a substantially U-shaped cross section is conveyed to the cutting device 67 and cut by a predetermined length. Incidentally, the weather-stop sponge-attached weather strip 100A having a predetermined length is then connected to each other by molding to form an annular weather strip.

以上詳述したように、本実施態様の止水スポンジ付ウエザストリップ100Aの製造方法では、押出工程Eにおいて、トリム部10Aは、断面略直線状(平状態)に押し出された後、U字曲げ工程Rにおいて、止水スポンジ30Aを挾むようにしてベンダーローラー70の先端70aを当て内側に折り曲げて断面略U字形にする工法であるが、折り曲げ部分に止水スポンジ30Aが存在しておらず、ベンダーローラー70の先端70aが止水スポンジ30A内に入らないため、止水スポンジ30Aが圧縮されて破れるおそれはない。
また、止水スポンジ30Aは成形当初は断面略平行四辺形になっていないため、止水スポンジ30Aを挾むようにしてベンダーローラー70の先端70aを当て内側に折り曲げて断面略U字形にすることができる。
さらに、U字曲げ工程Rにおいて、トリム部10Aの車内側側壁12予定部位の内面から延出して形成されていた支持突起19の先端を、底壁13予定部位に形成されている止水スポンジ30Aの断面略長方形の車内側側面に当接させて、この止水スポンジ30Aを断面略平行四辺形に変形させるだけなので、比較的簡易に断面略平行四辺形の止水スポンジ30Aを形成することができる。
As described above in detail, in the method of manufacturing the weatherstrip-equipped weather strip 100A of the present embodiment, in the extrusion step E, the trim portion 10A is extruded into a substantially straight cross section (flat state), and then U-shaped. In the bending process R, the tip 70a of the bender roller 70 is folded inward so as to sandwich the water-stopping sponge 30A, and is bent into a substantially U-shaped cross section. Since the tip 70a of the roller 70 does not enter the water-stopping sponge 30A, there is no possibility that the water-stopping sponge 30A is compressed and broken.
In addition, since the water-stopping sponge 30A is not formed into a substantially parallelogram in cross section at the beginning of molding, the tip 70a of the bender roller 70 can be bent inward so as to sandwich the water-stopping sponge 30A, so that the cross-section can be formed into a substantially U shape.
Further, in the U-shaped bending process R, the water stop sponge 30A formed at the bottom wall 13 predetermined portion is formed at the front end of the support protrusion 19 that is formed extending from the inner surface of the trim portion 10A on the vehicle inner side wall 12 predetermined portion. Since the water-stopping sponge 30A is simply deformed into a substantially parallelogram cross-section by abutting against the vehicle inner side surface of the cross-section substantially rectangular, the waterstop sponge 30A having a cross-section substantially parallelogram can be formed relatively easily. it can.

なお、上記実施形態の記載内容に限定されず、例えば次のように実施してもよい。勿論、以下において例示しない他の応用例、変更例も当然可能である。   In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

(a)上記の実施形態では、支持突起19の材質をトリム部10Aの材質と同じEPDMソリッドゴムとしたが、中空シール部40と同じEPDMスポンジゴムとしても良く、他の材質でも良い。要するに、止水スポンジ30Aを断面略平行四辺形に変形させられるように、止水スポンジ30Aの材質よりも硬い材料で、トリム部10Aに一体的に形成できるものであれば良い。   (A) In the above embodiment, the material of the support protrusion 19 is the same EPDM solid rubber as that of the trim portion 10A, but it may be the same EPDM sponge rubber as that of the hollow seal portion 40, or another material. In short, any material that is harder than the material of the water-stopping sponge 30A and can be integrally formed with the trim portion 10A may be used so that the water-stopping sponge 30A can be deformed into a substantially parallelogram in cross section.

(b)また、上記の実施形態では、断面略U字形のトリム部10Aと中空シール部40を備えた例を示したが、中空シール部40を備えていないトリム部だけのものに適用させても良く。また、中空シール部40に代えてリップタイプのシール部を適用させても良い。さらに、トリム部10Aにカバーリップを設けても良い。   (B) In the above-described embodiment, an example in which the trim portion 10A having a substantially U-shaped cross section and the hollow seal portion 40 is provided has been described. However, the embodiment may be applied only to a trim portion that does not include the hollow seal portion 40. Well. Further, instead of the hollow seal portion 40, a lip type seal portion may be applied. Further, a cover lip may be provided on the trim portion 10A.

1 ボディ
5 開閉部材(バックドア)
6 開口部周縁
7 フランジ
10A トリム部
11 車外側側壁
12 車内側側壁
13 底壁
14−17 フランジ保持リップ
18 サブシールリップ
19 支持突起
20 芯材
30A 止水スポンジ
40 中空シール部
100A ウエザストリップ
1 Body 5 Opening / closing member (back door)
6 Opening peripheral edge 7 Flange 10A Trim part 11 Car outer side wall 12 Car inner side wall 13 Bottom wall 14-17 Flange holding lip 18 Sub seal lip 19 Support projection 20 Core material 30A Water stop sponge 40 Hollow seal part 100A Weather strip

Claims (3)

自動車のボディの開口部周縁のフランジに保持され、車外側側壁、車内側側壁及び両側壁を連結する底壁を備える断面略U字形のトリム部と、前記トリム部の底壁から上方に突出して設けられ、前記ボディの開口部を開閉する開閉部材の閉時に該開閉部材の周縁に押付けられる中空シール部と、前記トリム部の車外側側壁から突出して前記フランジ近傍のボディの開口部周縁に当接してシールするサブシールリップとを有し、前記トリム部には、高分子材料の被覆材内部に芯材が埋設され、車外側側壁と車内側側壁の内面から断面略U字形の内側にそれぞれフランジ保持リップが延設され、底壁の内側に止水スポンジが設けられたウエザストリップであって、
前記止水スポンジは、その車内側側壁に前記トリム部の車内側側壁の内面から延出された支持突起を当接させることにより断面略平行四辺形に形成されていることを特徴とする止水スポンジ付ウエザストリップ。
A trim part having a substantially U-shaped cross section, which is held by a flange at the periphery of the opening of the body of the automobile and has a bottom wall connecting the outer side wall, the inner side wall and both side walls, and protrudes upward from the bottom wall of the trim part. A hollow seal portion that is pressed against the periphery of the opening and closing member when the opening and closing member that opens and closes the opening of the body is closed, and protrudes from the vehicle outer side wall of the trim portion and contacts the periphery of the opening of the body near the flange. A sub-seal lip that seals in contact with each other, and a core material is embedded in the trim material inside the coating material of the polymer material, and the inner side of the outer side wall and the inner side wall of the trim part has a substantially U-shaped cross section inside. A weather strip with a flange holding lip extended and a water stop sponge provided inside the bottom wall,
The water stop sponge is formed in a substantially parallelogram cross-section by bringing a support protrusion extending from the inner surface of the vehicle inner side wall of the trim portion into contact with the vehicle inner side wall. Weather strip with sponge.
前記支持突起は、前記トリム部と同じ材質で形成され、その突出量は前記トリム部の肩部の曲げRのR寸法以上で車内側フランジ保持リップの突出長さ寸法よりも小さく形成されていることを特徴とする請求項1に記載の止水スポンジ付ウエザストリップ。   The support protrusion is formed of the same material as the trim part, and the protrusion amount is equal to or greater than the R dimension of the bend R of the shoulder part of the trim part and smaller than the protrusion length dimension of the vehicle interior flange holding lip. The weather strip with water-stop sponge according to claim 1. 自動車のボディの開口部周縁のフランジに保持され、車外側側壁、車内側側壁及び両側壁を連結する底壁を備える断面略U字形のトリム部と、前記トリム部の底壁から上方に突出して設けられ、前記ボディの開口部を開閉する開閉部材の閉時に該開閉部材の周縁が押付けられる中空状のシール部と、前記トリム部の車外側側壁から突出して前記フランジ近傍のボディの開口部周縁に当接してシールするサブシールリップとを有し、前記トリム部には、高分子材料の被覆材内部に芯材が埋設され、車外側側壁と車内側側壁の内面から断面略U字形の内側にそれぞれフランジ保持リップが延設され、底壁の内側に止水スポンジが設けられたウエザストリップの製造方法であって、
前記トリム部を平板状又は略へ字状に芯材を埋設させて、中空シール部とともに高分子材料の被覆材を押出す押出工程と、
前記トリム部をベンダーローラーによって断面略U字形に変形させるU字曲げ工程とを備え、
該U字曲げ工程において、前記トリム部の車内側側壁の内面から延出された支持突起の先端を、前記止水スポンジの断面略長方形の車内側側壁に当接させて、該止水スポンジを断面略平行四辺形に変形させて形成することを特徴とする止水スポンジ付ウエザストリップの製造方法。
A trim part having a substantially U-shaped cross section, which is held by a flange at the periphery of the opening of the body of the automobile and has a bottom wall connecting the outer side wall, the inner side wall and both side walls, and protrudes upward from the bottom wall of the trim part. A hollow seal portion that is provided and that opens and closes an opening and closing member that opens and closes the opening of the body; and a periphery of the opening and closing member that protrudes from the outer side wall of the trim portion and protrudes from the vehicle outer side wall. A sub-seal lip that abuts against and seals, and a core material is embedded in the trim material inside the trim material, and the inner side of the vehicle outer side wall and the inner side wall of the vehicle has a substantially U-shaped cross section. A method for producing a weather strip in which a flange holding lip is extended to each other and a waterproof sponge is provided on the inside of the bottom wall,
An extruding step of embedding a core material in a flat plate shape or a substantially hemiform shape and extruding a coating material of a polymer material together with a hollow seal portion;
A U-bending step of deforming the trim part into a substantially U-shaped cross section by a bender roller;
In the U-shaped bending step, the tip of the support protrusion extended from the inner surface of the vehicle interior side wall of the trim portion is brought into contact with the vehicle interior side wall having a substantially rectangular cross section of the water stop sponge, A method for producing a weather strip with a water-stop sponge, wherein the weather strip is deformed into a substantially parallelogram in cross section.
JP2009271372A 2009-11-30 2009-11-30 Weather strip with water stop sponge, and method for manufacturing the same Withdrawn JP2011111109A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9327585B2 (en) 2012-04-26 2016-05-03 Tokai Kogyo Co., Ltd. Trim for vehicle
JP2022030350A (en) * 2020-08-07 2022-02-18 鬼怒川ゴム工業株式会社 Automotive weather strip

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9327585B2 (en) 2012-04-26 2016-05-03 Tokai Kogyo Co., Ltd. Trim for vehicle
JP2022030350A (en) * 2020-08-07 2022-02-18 鬼怒川ゴム工業株式会社 Automotive weather strip

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