JP2013100010A - Weather strip for automobile - Google Patents

Weather strip for automobile Download PDF

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JP2013100010A
JP2013100010A JP2011244644A JP2011244644A JP2013100010A JP 2013100010 A JP2013100010 A JP 2013100010A JP 2011244644 A JP2011244644 A JP 2011244644A JP 2011244644 A JP2011244644 A JP 2011244644A JP 2013100010 A JP2013100010 A JP 2013100010A
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wall
mountain
door
weather strip
hollow seal
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JP5872852B2 (en
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Atsushi Fukuda
篤 福田
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Nishikawa Rubber Co Ltd
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Nishikawa Rubber Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To prevent the formation of a water pocket in a weather strip 5 when closing a door while enhancing the sealing performance of the weather strip 5 without impairing a good appearance.SOLUTION: The weather strip 5 includes a hollow seal part 7. A protruded part 7B protruded to the vehicle body outside of the hollow seal part 7 consists of an inner wall 27 on the indoor side and an outer wall 29 on the outdoor side, and has an approximately triangular chevron shape in cross section. The inner face of the peripheral edge of the door 16 abuts on a front end 30 of the chevron-shape protruded part 7B. To form a hollow part 32 outside an outer wall 29 of the chevron-shape protruded part 7B, an swollen wall 8 is provided which is swollen to the outdoor side while joining the front end 30 of the chevron-shape protruded part 7B to the skirt part of the outer wall 29. The swollen wall 8 is more flexibly deflected than the outer wall 29.

Description

本発明は、自動車のドアで閉じられる車室やトランク室の開口部周縁に取り付けられる自動車用ウェザストリップに関する。   The present invention relates to a weather strip for an automobile that is attached to the periphery of an opening of a passenger compartment or a trunk compartment that is closed by an automobile door.

自動車用ウェザストリップの一例が特許文献１に記載されている。そのウェザストリップはドアが当接する断面略円形の中空シール部を備えている。この中空シール部は、円弧状になった先端部と基部とを結ぶブリッジを有し、このブリッジによって中空部が室外側と室内側とに二分されている。中空シール部にドアが押し当てられると、中空シール部のブリッジが倒れて円弧状の先端部が平たくなり、ドア内面に対して比較的広い面で接触した状態になる。   An example of a weather strip for an automobile is described in Patent Document 1. The weather strip includes a hollow seal portion having a substantially circular cross section with which the door abuts. The hollow seal portion has a bridge that connects the arcuate tip portion and the base portion, and the hollow portion is divided into an outdoor side and an indoor side by the bridge. When the door is pressed against the hollow seal portion, the bridge of the hollow seal portion falls down and the arcuate tip portion becomes flat, and is brought into contact with the door inner surface on a relatively wide surface.

特許文献２には、スライドドアで閉じられる車体開口部周縁のウェザストリップが記載されている。このウェザストリップは、内側の第１中空シール部と外側の第２中空シール部とを備え一体になっている。スライドドアが閉じられると、外側の第２中空シール部がドアのスライド方向に横倒れして、ドア内面に対して比較的広い面で接触した状態になる。   Patent Document 2 describes a weather strip at the periphery of a vehicle body opening that is closed by a sliding door. The weather strip is integrally provided with an inner first hollow seal portion and an outer second hollow seal portion. When the sliding door is closed, the outer second hollow seal portion falls in the sliding direction of the door and comes into contact with the inner surface of the door on a relatively wide surface.

特許３６２１６６２号公報Japanese Patent No. 3621662 特開２００５−１１９３５０号公報JP 2005-119350 A

上述のようなドア内面に比較的広い面で接触するウェザストリップの場合、シールしている面は広くても、その接触部の面圧は低くなりがちであり、水に対するシール性の点で不利になる。   In the case of a weather strip that contacts the door inner surface as described above with a relatively wide surface, even if the surface being sealed is large, the surface pressure of the contact portion tends to be low, which is disadvantageous in terms of sealing performance against water. become.

これに対して、図８に示すように、中空シール部ａのドアｂに接触する先端部ｃを角張った形状にして接触面圧を大きくすることが考えられる。しかし、その場合、ドアｂを開けたときに中空シール部ａの先端部ｃの角張った形が目に付き易く、違和感を与えるなどして見栄えの点で好ましくなく、一般にトランクなどの人の乗降口以外で使用されている。また、たとえ、特許文献１又は２のような人の乗降口に取り付けると、ドアを閉じたときに、図８に示すように、車体開口部のルーフ側では、中空シール部ａとドアｂとの間に水ｄが溜まる幅広の溝ができてしまい好ましくない。そのため、ドアを開けたときに、その溜まった水ｄが落ちて利用者にかかるおそれが出てくる。   On the other hand, as shown in FIG. 8, it is conceivable to increase the contact surface pressure by making the tip end portion c contacting the door b of the hollow seal portion a square. However, in that case, when the door b is opened, the angular shape of the distal end portion c of the hollow seal portion a is easily noticeable and is not preferable in terms of appearance because it gives a sense of incongruity. Used outside the mouth. Further, even if it is attached to a person's entrance and exit as in Patent Document 1 or 2, when the door is closed, as shown in FIG. 8, on the roof side of the vehicle body opening, the hollow seal portion a and the door b A wide groove in which water d accumulates is formed between the two. Therefore, when the door is opened, there is a risk that the accumulated water d falls and is applied to the user.

そこで、本発明は、ウェザストリップの見栄えを損なうことなく、上述のシール性を高めること、そして、上述の水溜まりの問題を解消することを課題とする。   SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to improve the above-described sealing performance and to eliminate the above-described water pool problem without impairing the appearance of the weather strip.

本発明は、上記課題を解決するために、中空シール部に略三角山形の突出部を設けてその先端にドアを当接させるようにするとともに、この突出部の室外側に柔軟な膨出壁を設けた。   In order to solve the above problems, the present invention provides a substantially triangular mountain-shaped projecting portion in the hollow seal portion so that the door is brought into contact with the tip of the projecting portion, and a flexible bulging wall on the outdoor side of the projecting portion. Was provided.

すなわち、ここに提示する自動車用ウェザストリップは、ドアで閉じられる車体の開口部周縁に取り付けられるものであって、
室内側の内壁と室外側の外壁とにより形成された略三角山形の断面形状を有する山形突出部を備え、該山形突出部の先端に上記ドアの周縁部の内面が当接する中空シール部と、
上記山形突出部の上記外壁の室外側に中空部を形成するように、上記山形突出部の先端部と上記外壁の裾部とを結んで室外側に膨んだ膨出壁とを備え、
上記膨出壁は、上記山形突出部の上記外壁よりも柔軟に撓むように形成されていることを特徴とする。 That is, the automobile weather strip presented here is attached to the periphery of the opening of the vehicle body that is closed by a door,
A hollow seal portion including a mountain-shaped protrusion having a substantially triangular mountain-shaped cross section formed by an inner wall on the indoor side and an outer wall on the outdoor side, and an inner surface of the peripheral edge of the door contacting the tip of the mountain-shaped protrusion;
A bulging wall that swells to the outdoor side connecting the tip of the mountain-shaped protruding part and the bottom of the outer wall so as to form a hollow part on the outdoor side of the outer wall of the mountain-shaped protruding part,
The bulging wall is formed so as to bend more flexibly than the outer wall of the mountain-shaped protrusion.

ここに、「室内側」とは室内に臨むウェザストリップの内周側を意味し、「室外側」とは室外に臨むウェザストリップの外周側を意味する。   Here, “indoor side” means the inner peripheral side of the weather strip facing the room, and “outdoor side” means the outer peripheral side of the weather strip facing the outdoor side.

上記膨出壁が上記山形突出部の外壁よりも柔軟に撓むようにするためには、例えば、この膨出壁を山形突出部の外壁よりも薄くすればよく、或いは、膨出壁を山形突出部の外壁よりも低比重の壁材によって形成すればよい。   In order for the bulging wall to bend more flexibly than the outer wall of the mountain-shaped protrusion, for example, the bulging wall may be made thinner than the outer wall of the mountain-shaped protrusion, or the bulging wall may be What is necessary is just to form by the wall material of specific gravity lower than the outer wall of this.

好ましい実施形態では、上記外壁は、上記ドアが上記山形突出部の先端部に押し当てられたときに、室内側に向かって湾曲するように反っていることを特徴とする。   In a preferred embodiment, the outer wall is curved so as to bend toward the indoor side when the door is pressed against the tip of the mountain-shaped protrusion.

また、好ましい実施形態では、上記中空シール部は、室内側の内壁と室外側の外壁とにより形成された略三角溝形の断面形状を有する基部を備え、この溝形基部と上記山形突出部とによって断面略菱形状に形成されていることを特徴とする。   In a preferred embodiment, the hollow seal portion includes a base portion having a substantially triangular groove-shaped cross section formed by an inner wall on the indoor side and an outer wall on the outdoor side, and the groove-shaped base portion and the chevron-shaped protrusion portion. The cross section is formed in a substantially rhombus shape.

本発明によれば、中空シール部の突出部が略三角山形の断面形状を有するから、この中空シール部にドアが押し当てられたときには、中空シール部の突出部先端のドアに対する接触面が広くならず、謂わば、断面で示すと点で接触する点接触と表現でき、この断面が直列につながった状態の長尺状では線で接触する線接触に近い状態になって接触面圧が大きくなり、特に水に対するシール性が高くなる。ここに、上記山形突出部の室外側には該突出部の先端に連なる膨出壁が設けられているが、この膨出壁はドアが中空シール部に押し当てられたときに柔軟に撓むため、上記接触面圧を低下させる要因にはならず、シール性には格別の影響を与えない。   According to the present invention, since the projecting portion of the hollow seal portion has a substantially triangular mountain cross-sectional shape, when the door is pressed against the hollow seal portion, the contact surface of the projecting portion tip of the hollow seal portion with the door is wide. In other words, so-called cross-section, it can be expressed as point contact in contact with a point, and in the long shape in which the cross-section is connected in series, the contact surface pressure is large because it is close to line contact in contact with a line. In particular, the sealing performance against water becomes high. Here, a bulging wall connected to the tip of the protruding portion is provided outside the mountain-shaped protruding portion, and this bulging wall flexes flexibly when the door is pressed against the hollow seal portion. For this reason, it does not cause a decrease in the contact surface pressure, and does not particularly affect the sealing performance.

そうして、ドアを閉じたときには、上記膨出壁が室外側にさらに膨出して上記山形突出部の外壁とドアとの間を埋めるような形になる。よって、車体開口部のルーフ側おいて、中空シール部とドアとの間に水が溜まる幅広の溝ができることが避けられる。しかも、上記突出部自体が略三角山形の形状であるにも拘わらず、この山形突出部の先端に室外側に膨出した膨出壁が連なっているため、中空シール部の先端側は角張った印象がなくなり、見栄えも良くなる。   Thus, when the door is closed, the bulging wall further bulges to the outdoor side and fills the space between the outer wall of the mountain-shaped protrusion and the door. Therefore, on the roof side of the vehicle body opening, it is possible to avoid the formation of a wide groove in which water accumulates between the hollow seal portion and the door. Moreover, despite the fact that the protrusion itself has a substantially triangular chevron shape, since the bulging wall that bulges to the outdoor side is connected to the tip of the chevron protrusion, the distal end side of the hollow seal portion is angular. The impression is lost and the appearance is improved.

また、上記外壁について、ドアが上記山形突出部の先端部に押し当てられたときに、室内側に向かって湾曲するように反っている構成を採用すると、山形突出部とドアとの接触面圧を高くする上で有利になる。すなわち、山形突出部の外壁が室内側に向かって湾曲するということは、山形突出部の先端部にドアが押し当てられたとき、外壁が内壁側に向かって湾曲していき、外壁と内壁とのなす角度がそれほど変化しないということであり、よって、上記接触面圧が高くなり、シール性が良くなる。   In addition, when the door is pressed against the tip of the mountain-shaped protrusion, the outer wall is configured to bend toward the indoor side, so that the contact surface pressure between the mountain-shaped protrusion and the door is adopted. This is advantageous in increasing the height. That is, the fact that the outer wall of the mountain-shaped protrusion is curved toward the indoor side means that when the door is pressed against the tip of the mountain-shaped protrusion, the outer wall curves toward the inner wall, and the outer wall and the inner wall Therefore, the contact surface pressure is increased and the sealing performance is improved.

また、上記中空シール部を、溝形基部と上記山形突出部とよりなる断面略菱形状に形成すると、ドアを閉じたときの、中空シール部に対するドアの当たりがより弾性的になるとともに、ドアと車体との間の寸法誤差の吸収にも有利になる。   Further, when the hollow seal portion is formed in a substantially rhombus shape in cross section composed of the groove-shaped base portion and the mountain-shaped protruding portion, the contact of the door with the hollow seal portion when the door is closed becomes more elastic, and the door It is also advantageous for absorbing dimensional errors between the vehicle and the vehicle body.

本発明に係るウェザストリップを適用する自動車の一例を示す側面図である。It is a side view which shows an example of the motor vehicle which applies the weather strip which concerns on this invention. リヤドアを閉じた状態での図１のＡ−Ａ線における拡大断面図である。It is an expanded sectional view in the AA line of FIG. 1 in the state which closed the rear door. 本発明に係るウェザストリップの断面図である。It is sectional drawing of the weather strip which concerns on this invention. 図１のＡ−Ａ線におけるウェザストリップとドアインナパネルとの関係を示す拡大断面図である。It is an expanded sectional view which shows the relationship between the weather strip and door inner panel in the AA line of FIG. 図１のＢ−Ｂ線におけるウェザストリップとドアインナパネルとの関係を示す拡大断面図である。It is an expanded sectional view which shows the relationship between the weather strip and door inner panel in the BB line of FIG. 図１のＣ−Ｃ線におけるウェザストリップとドアインナパネルとの関係を示す拡大断面図である。It is an expanded sectional view which shows the relationship between the weather strip and the door inner panel in the CC line of FIG. 本発明に係るウェザストリップの別の例を示す図４と同様の断面図である。It is sectional drawing similar to FIG. 4 which shows another example of the weather strip which concerns on this invention. 本発明の課題を説明する断面図である。It is sectional drawing explaining the subject of this invention.

以下、本発明を実施するための形態を図面に基づいて説明する。以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

図１に示す自動車において、１はフロントドア、２はリヤドアである。リヤドア２は、車体３の開口（車室のリヤ側乗降口）４を開閉すべく前後にスライドするスライドドアである。この車体３の開口４の周縁部に本実施形態に係るウェザストリップ５が取り付けられている。   In the automobile shown in FIG. 1, 1 is a front door and 2 is a rear door. The rear door 2 is a sliding door that slides back and forth to open and close an opening (rear entrance / exit of the vehicle compartment) 4 of the vehicle body 3. A weather strip 5 according to this embodiment is attached to the peripheral edge of the opening 4 of the vehicle body 3.

すなわち、図２に示すように、ウェザストリップ５は、グリップ部６と中空シール部７と膨出壁８とを備えている。上記開口４の上縁では、ルーフサイドレール１１を構成するレールインナ１２とレールアウタ１３との接合フランジ１４にグリップ部６が嵌着されている。また、グリップ部６より車室側に突出したリップ９がルーフヘッドライニング１５の縁に室内側から当てられている。上記開口４の前縁及び後縁ではそれぞれ車体ピラーのフランジにグリップ部６が嵌着され、上記開口４の下縁ではサイドシルのフランジにグリップ部６が嵌着されている。   That is, as shown in FIG. 2, the weather strip 5 includes a grip portion 6, a hollow seal portion 7, and a bulging wall 8. At the upper edge of the opening 4, the grip portion 6 is fitted to the joint flange 14 between the rail inner 12 and the rail outer 13 constituting the roof side rail 11. A lip 9 protruding from the grip 6 toward the passenger compartment is applied to the edge of the roof head lining 15 from the indoor side. A grip portion 6 is fitted to the flange of the vehicle body pillar at the front and rear edges of the opening 4, and a grip portion 6 is fitted to the flange of the side sill at the lower edge of the opening 4.

また、図２において、１６はリヤドア２のインナパネル、１７はアウタパネル、１８はウィンドガラスである。ウェザストリップ５の中空シール部７にはリヤドア２のインナパネル１６の周縁部内面が当接するようになっている。   In FIG. 2, 16 is an inner panel of the rear door 2, 17 is an outer panel, and 18 is a window glass. The inner surface of the inner periphery of the inner panel 16 of the rear door 2 comes into contact with the hollow seal portion 7 of the weather strip 5.

図３に示すように、ウェザストリップ５のグリップ部６は、内側壁２１と外側壁２２とを備えた断面略Ｕ字形に形成されており、内部に金属製又は樹脂製の芯材２３が埋設されている。グリップ部６の内側にはリップ６ａ〜６ｃ及び突起６ｄが設けられている。   As shown in FIG. 3, the grip portion 6 of the weather strip 5 is formed in a substantially U-shaped cross section including an inner wall 21 and an outer wall 22, and a metal or resin core material 23 is embedded therein. Has been. Lips 6 a to 6 c and a protrusion 6 d are provided inside the grip portion 6.

ウェザストリップ５の中空シール部７は、グリップ部６の外側壁２２と一体になっていて、車体外側に突出している。この中空シール部７は、室内側の第１内壁２６及び第２内壁２７と、室外側の第１外壁２８及び第２外壁２９とを備えており、これらの壁２６〜２９によって断面略菱形状（パンタグラフ状）に形成されている。   The hollow seal portion 7 of the weather strip 5 is integrated with the outer wall 22 of the grip portion 6 and protrudes outside the vehicle body. The hollow seal portion 7 includes a first inner wall 26 and a second inner wall 27 on the indoor side, and a first outer wall 28 and a second outer wall 29 on the outdoor side, and these walls 26 to 29 form a substantially diamond-shaped cross section. (Pantograph shape).

具体的に説明すると、室内側の第１内壁２６と室外側の第１外壁２８とは、中空シール部７の基部７Ａを構成するものであって、グリップ部６の外側壁２２より車体外側に向かって突出し、且つ車体外側へ行くに従って互いの間隔が拡がっている。すなわち、中空シール部７の基部７Ａは断面形状が略三角溝形になっている。   More specifically, the first inner wall 26 on the indoor side and the first outer wall 28 on the outdoor side constitute the base portion 7A of the hollow seal portion 7, and are located outside the vehicle body from the outer wall 22 of the grip portion 6. Projecting toward each other and the distance from each other increases toward the outside of the vehicle body. That is, the base portion 7A of the hollow seal portion 7 has a substantially triangular groove shape in cross-sectional shape.

一方、室外側の第２内壁２７と室内側の第２外壁２９とは、中空シール部７の突出部７Ｂを構成するものであって、上記基部７Ａを構成する第１の内壁２６及び外壁２８の各々に続いて車体外側に向かって突出している。この第２の内壁２７及び外壁２９は、車体外側へ行くに従って互いの間隔が狭くなり、その先端同士が繋がっている。すなわち、中空シール部７の山形突出部７Ｂは断面形状が略三角山形になっている。   On the other hand, the second inner wall 27 on the outdoor side and the second outer wall 29 on the indoor side constitute the projecting portion 7B of the hollow seal portion 7, and the first inner wall 26 and the outer wall 28 constituting the base portion 7A. Projecting toward the outside of the vehicle body following each of the above. The distance between the second inner wall 27 and the outer wall 29 decreases toward the outside of the vehicle body, and the tips thereof are connected. That is, the cross-sectional shape of the mountain-shaped protrusion 7B of the hollow seal portion 7 is a substantially triangular mountain shape.

山形突出部７Ｂの先端部３０の肉厚Ｔ１は、内壁２７の肉厚Ｔ２及び外壁２９の肉厚Ｔ３よりも大きくなっている。すなわち、山形突出部７Ｂの先端部３０は車体外側に向かって突き出たようになっている。また、山形突出部７Ｂの内壁２７の肉厚Ｔ２は外壁２９の肉厚Ｔ３よりも大きくなっている。より具体的に説明すると、内壁２７の肉厚Ｔ２は基部７Ａ側から車体外側へ行くに従って漸次厚くなっていて、この内壁２７の最大厚部位が先端部３０を形成している。そして、この内壁２７の最大厚部位の室外側の側面に外壁２９の先端が繋がっている。   The wall thickness T1 of the tip 30 of the chevron protrusion 7B is larger than the wall thickness T2 of the inner wall 27 and the wall thickness T3 of the outer wall 29. That is, the tip portion 30 of the mountain-shaped protrusion 7B protrudes toward the outside of the vehicle body. Further, the wall thickness T2 of the inner wall 27 of the mountain-shaped protrusion 7B is larger than the wall thickness T3 of the outer wall 29. More specifically, the thickness T2 of the inner wall 27 gradually increases from the base 7A side toward the outside of the vehicle body, and the maximum thickness portion of the inner wall 27 forms the tip portion 30. And the front-end | tip of the outer wall 29 is connected with the side surface of the outdoor side of the largest thickness site | part of this inner wall 27. As shown in FIG.

上記中空シール部７の壁２６〜２９とグリップ部６の外側壁２２とによって断面略菱形の第１中空部３１が形成されている。   A first hollow portion 31 having a substantially rhombic cross section is formed by the walls 26 to 29 of the hollow seal portion 7 and the outer wall 22 of the grip portion 6.

ウェザストリップ５の膨出壁８は、中空シール部７の山形突出部７Ｂの先端部３０と、該山形突出部７Ｂを形成する外壁２９の裾部とを結び、且つ室外側に湾曲して膨んでいる。この膨出壁８と外壁２９とによって、外壁２９の外側に断面略弓形の第２中空部３２が形成されている。   The bulging wall 8 of the weather strip 5 connects the tip portion 30 of the mountain-shaped projection 7B of the hollow seal portion 7 and the skirt of the outer wall 29 forming the mountain-shaped projection 7B, and is curved and bulged outward. It is. The bulging wall 8 and the outer wall 29 form a second hollow portion 32 having a substantially arcuate cross section outside the outer wall 29.

ここに、上記膨出壁８は、山形突出部７Ｂを形成する内壁２７の最大厚部位の先端に繋がり、膨出壁８の外面と内壁２７の外面とが連続したなだらかな曲面を形成している。よって、中空シール部７からは角張った印象を受けず、見栄えが良い。   Here, the bulging wall 8 is connected to the tip of the maximum thickness portion of the inner wall 27 forming the mountain-shaped protrusion 7B, and forms a gentle curved surface in which the outer surface of the bulging wall 8 and the outer surface of the inner wall 27 are continuous. Yes. Therefore, it does not receive an angular impression from the hollow seal portion 7 and looks good.

また、リヤドア２が山形突出部７Ｂの先端部３０に押し当てられたときに、膨出壁８が外壁２７よりも柔軟に撓むように、膨出壁８の肉厚Ｔ４は外壁２９の肉厚Ｔ３よりも小さくなっている。すなわち、膨出壁８は外壁２９よりも薄くなっている。   In addition, the wall thickness T4 of the bulging wall 8 is the wall thickness T3 of the outer wall 29 so that the bulging wall 8 bends more flexibly than the outer wall 27 when the rear door 2 is pressed against the tip 30 of the mountain-shaped protrusion 7B. Is smaller than That is, the bulging wall 8 is thinner than the outer wall 29.

さらに、山形突出部７Ｂの外壁２９は、リヤドア２が山形突出部７Ｂの先端部３０に押し当てられたときに、室内側に向かって湾曲するように反っている。すなわち、外壁２９はその中央部が室内側に出張るように若干弓なりになっている。   Furthermore, the outer wall 29 of the mountain-shaped protrusion 7B is warped so as to bend toward the indoor side when the rear door 2 is pressed against the tip 30 of the mountain-shaped protrusion 7B. That is, the outer wall 29 is slightly bowed so that the central part thereof is on the indoor side.

中空シール部７のグリップ部６は、リップ６ｂ，６ｃ及び内側壁２１の先端部を除いて比重が０．６以上１．３以下程度の複数の気泡のあるスポンジゴム又は気泡のないソリッドゴムにて形成され、リップ６ｂ，６ｃ及び内側壁２１の先端部は比重が０．４以上０．７未満程度のスポンジゴムにて形成されている。ここで、リップ６ｂ，６ｃ及び内側壁２１の先端部は、グリップ部６の他の部分と同じ材質でもよいが、止水性等の理由から上記の設定としている。また、突起６ｄは、開口４の周縁の上記フランジに当接する平坦な面を有し、ドア閉時のグリップ部６への衝撃を安定して受け止める。   The grip portion 6 of the hollow seal portion 7 is made of a sponge rubber having a plurality of bubbles having a specific gravity of about 0.6 to 1.3 or a solid rubber having no bubbles except for the lips 6b and 6c and the tip of the inner wall 21. The tip ends of the lips 6b and 6c and the inner wall 21 are made of sponge rubber having a specific gravity of about 0.4 or more and less than 0.7. Here, the lip 6b, 6c and the tip of the inner wall 21 may be made of the same material as the other parts of the grip part 6, but are set as described above for reasons such as water-stopping. The protrusion 6d has a flat surface that comes into contact with the flange on the periphery of the opening 4 and stably receives an impact on the grip portion 6 when the door is closed.

中空シール部７は、基部７Ａを構成する外壁２８の付け根部分及び内壁２６がグリップ部６の外側壁２２と一体になった材質にて形成され、中空シール部７の残部及膨出壁８は前記スポンジゴムにて形成されている。ここで、リップ６ｂ，６ｃ及び内側壁２１の先端部を除くグリップ部６の材質は中空シール部７のスポンジゴムよりも剛性を高くしている。   The hollow seal portion 7 is formed of a material in which the base portion of the outer wall 28 and the inner wall 26 constituting the base portion 7A are integrated with the outer wall 22 of the grip portion 6, and the remaining portion of the hollow seal portion 7 and the bulging wall 8 are It is made of sponge rubber. Here, the material of the grip part 6 excluding the lip 6b, 6c and the tip part of the inner wall 21 is higher in rigidity than the sponge rubber of the hollow seal part 7.

上記ウェザストリップ５を形成するソリッドゴム及びスポンジゴムの材料としてはＥＰＤＭ（エチレン−プロピレン−ジエン共重合体）を好ましく採用することができるが、ＩＲ（イソプレンゴム）、ＣＲ（クロロプレンゴム）、熱可塑性エラストマー（オレフィン系又はスチレン系熱可塑性エラストマー）、軟質のポリ塩化ビニル等など、他のゴム材料ないしはゴム状弾性を有する他の弾性材料を用いてもよい。   EPDM (ethylene-propylene-diene copolymer) can be preferably used as the material of the solid rubber and sponge rubber forming the weather strip 5, but IR (isoprene rubber), CR (chloroprene rubber), thermoplasticity. Other rubber materials or other elastic materials having rubber-like elasticity such as elastomer (olefin-based or styrene-based thermoplastic elastomer), soft polyvinyl chloride, and the like may be used.

上記構成のウェザストリップ５では、リヤドア２が閉じられたとき、図４に示すように、ドアインナパネル１６の周縁部内面が中空シール部７の山形突出部７Ｂの先端部３０に押し当てられる。これにより、中空シール部７は第１中空部３１が扁平な形になるように変形する。   In the weather strip 5 having the above-described configuration, when the rear door 2 is closed, the inner surface of the peripheral edge portion of the door inner panel 16 is pressed against the tip portion 30 of the chevron protruding portion 7B of the hollow seal portion 7 as shown in FIG. Thereby, the hollow seal part 7 deform | transforms so that the 1st hollow part 31 may become a flat shape.

しかし、山形突出部７Ｂは、その断面形状が略三角山形であるから、さらには、山形突出部７Ｂの先端部３０が車体外側に向かって突き出たようにその肉厚Ｔ１が大きくなっているから、断面形状が円弧形になった突出部とは違って、ドアインナパネル１６が押し当てられても、山形突出部７Ｂが平たくなるように変形することはない。   However, since the cross-sectional shape of the mountain-shaped protruding portion 7B is a substantially triangular mountain shape, the thickness T1 of the mountain-shaped protruding portion 7B increases as if the tip portion 30 of the mountain-shaped protruding portion 7B protrudes toward the outside of the vehicle body. Unlike the projecting portion whose cross-sectional shape is an arc, even if the door inner panel 16 is pressed, the mountain-shaped projecting portion 7B is not deformed so as to be flat.

しかも、ドアインナパネル１６が山形突出部７Ｂに押し当てられたとき、この山形突出部７Ｂを構成する外壁２９が室内側に向かって膨出するように湾曲変形するから、内壁２７と外壁２９とがなす山形突出部７Ｂの角度が大きく拡大することが避けられる。   In addition, when the door inner panel 16 is pressed against the mountain-shaped protrusion 7B, the outer wall 29 constituting the mountain-shaped protrusion 7B is curved and deformed so as to bulge toward the indoor side. It is possible to avoid the angle of the mountain-shaped protruding portion 7B formed by a large expansion.

よって、図４（図１のＡ−Ａ線での断面図）、図５（図１のＢ−Ｂ線での断面図）及び図６（図１のＣ−Ｃ線での断面図）に示すように、中空シール部７のドアインナパネル１６に対する接触面は広くならず、長尺状では謂わば線接触に近い状態になる。そのため、中空シール部７とドアインナパネル１６との接触面圧が大きくなり、特に水に対するシール性が高くなる。   Therefore, FIG. 4 (cross-sectional view taken along line AA in FIG. 1), FIG. 5 (cross-sectional view taken along line BB in FIG. 1), and FIG. 6 (cross-sectional view taken along line CC in FIG. 1). As shown, the contact surface of the hollow seal portion 7 with respect to the door inner panel 16 is not widened, and in a long shape, it becomes a state close to so-called line contact. Therefore, the contact surface pressure between the hollow seal portion 7 and the door inner panel 16 increases, and in particular, the sealing performance against water increases.

特に本例の場合は、中空シール部７の基部７Ａでは、内壁２６の材質の方が外壁２８よりも剛性が高く、また、山形突出部７Ｂでは、内壁２７の方が外壁２９よりも厚肉である。このため、ドアインナパネル１６が中空シール部７に押し当てられたとき、内壁２６，２７側の方が外壁２８，２９側よりも強く突っ張ることになる。その結果、中空シール部７は室外側に倒れ気味になり、山形突出部７Ｂを構成する外壁２７が室内側に向かって湾曲変形し易く、内壁２７と外壁２９とがなす山形突出部７Ｂの角度が大きく拡大することが避けられる。   Particularly in the case of this example, the material of the inner wall 26 is higher in rigidity than the outer wall 28 in the base portion 7A of the hollow seal portion 7, and the inner wall 27 is thicker than the outer wall 29 in the mountain-shaped protruding portion 7B. It is. For this reason, when the door inner panel 16 is pressed against the hollow seal portion 7, the inner wall 26, 27 side is more strongly stretched than the outer wall 28, 29 side. As a result, the hollow seal portion 7 tends to fall to the outdoor side, the outer wall 27 constituting the mountain-shaped protrusion 7B is easily bent and deformed toward the indoor side, and the angle of the mountain-shaped protrusion 7B formed by the inner wall 27 and the outer wall 29 Can be avoided from greatly expanding.

ここに、上記山形突出部７Ｂの室外側には該山形突出部７Ｂの先端部３０に連なる膨出壁８が設けられているが、この膨出壁８はドアインナパネル１６が中空シール部７に押し当てられたときに柔軟に撓むため、上記線接触による接触面圧を低下させる要因にはならない。   Here, a bulging wall 8 connected to the tip portion 30 of the mountain-shaped protrusion 7B is provided on the outdoor side of the mountain-shaped protrusion 7B. The bulging wall 8 has a door inner panel 16 formed of a hollow seal portion 7. Therefore, the contact surface pressure due to the line contact does not decrease.

また、上記膨出壁８は、室外側に向かって膨出しているから、ドアインナパネル１６が中空シール部７に押し当てられたときには、図４に示すように、室外側に向かってさらに膨出するように変形する。この膨出変形により、山形突出部７Ｂの外壁２７とドアインナパネル１６との間が膨出壁８によって埋められた状態になる。このため、図２及び図４に示すように、車体のルーフ側おいて、中空シール部７とドアインナパネル１６との間に水が多量に溜まることが避けられる。   Further, since the bulging wall 8 bulges toward the outdoor side, when the door inner panel 16 is pressed against the hollow seal portion 7, it further bulges toward the outdoor side as shown in FIG. Deforms to come out. By this bulging deformation, the space between the outer wall 27 of the mountain-shaped protrusion 7B and the door inner panel 16 is filled with the bulging wall 8. Therefore, as shown in FIGS. 2 and 4, it is possible to avoid a large amount of water from being accumulated between the hollow seal portion 7 and the door inner panel 16 on the roof side of the vehicle body.

そして、図４ではドア閉時に膨出壁８とドアインナパネル１６との間に若干のすき間が見られるが、図７に示すように、膨出壁８と内壁２７との連結部８ａを車体外側に突き出すことですき間をなくすこともできる。この場合においても、膨出壁８は薄肉等によって柔軟になっているためシール性を阻害しない（上記線接触による接触面圧を低下させない）。   In FIG. 4, there is a slight gap between the bulging wall 8 and the door inner panel 16 when the door is closed. As shown in FIG. 7, the connecting portion 8a between the bulging wall 8 and the inner wall 27 is connected to the vehicle body. The gap can be eliminated by protruding outward. Even in this case, since the bulging wall 8 is flexible due to thin wall or the like, the sealing performance is not hindered (the contact surface pressure due to the line contact is not reduced).

なお、上記実施形態は、本発明に係るウェザストリップをスライドドアで閉じられる車室開口部のシールに適用した例であるが、本発明の適用はこれに限るものでない。例えば、図１に示す自動車のフロントドア１やバックドア、或いはトランクドア（トランクリッド）のような、車体にヒンジで支持されたドアで閉じられる車室開口部或いは荷室開口部のシールにも本発明は適用することができる。   In addition, although the said embodiment is an example which applied the weather strip which concerns on this invention to the seal | sticker of the compartment opening part closed with a slide door, application of this invention is not restricted to this. For example, for a seal of a vehicle compartment opening or a cargo compartment opening that is closed by a door supported by a hinge on a vehicle body, such as the front door 1, the back door, or the trunk door (trunk lid) of the automobile shown in FIG. The present invention is applicable.

１ フロントドア
２ リヤドア
４ 開口
５ ウェザストリップ
６ グリップ部
７ 中空シール部
７Ａ 基部
７Ｂ 山形突出部
８ 膨出壁
１６ ドアインナパネル
２６，２７ 内壁
２８，２９ 外壁
３０ 先端部
３１ 第１中空部
３２ 第２中空部 DESCRIPTION OF SYMBOLS 1 Front door 2 Rear door 4 Opening 5 Weather strip 6 Grip part 7 Hollow seal part 7A Base part 7B Mountain-shaped protrusion part 8 Swelling wall 16 Door inner panel 26, 27 Inner wall 28, 29 Outer wall 30 Tip part 31 1st hollow part 32 2nd Hollow part

Claims (4)

ドアで閉じられる車体の開口部周縁に取り付けられる自動車用ウェザストリップであって、
室内側の内壁と室外側の外壁とにより形成された略三角山形の断面形状を有する山形突出部を備え、該山形突出部の先端に上記ドアの周縁部の内面が当接する中空シール部と、
上記山形突出部の上記外壁の室外側に中空部を形成するように、上記山形突出部の先端部と上記外壁の裾部とを結んで室外側に膨んだ膨出壁とを備え、
上記膨出壁は、上記山形突出部の上記外壁よりも柔軟に撓むように形成されていることを特徴とする自動車用ウェザストリップ。 A weather strip for automobiles attached to the periphery of an opening of a vehicle body closed by a door,
A hollow seal portion including a mountain-shaped protrusion having a substantially triangular mountain-shaped cross section formed by an inner wall on the indoor side and an outer wall on the outdoor side, and an inner surface of the peripheral edge of the door contacting the tip of the mountain-shaped protrusion;
A bulging wall that swells to the outdoor side connecting the tip of the mountain-shaped protruding part and the bottom of the outer wall so as to form a hollow part on the outdoor side of the outer wall of the mountain-shaped protruding part,
The weather strip for automobiles, wherein the bulging wall is formed so as to bend more flexibly than the outer wall of the mountain-shaped protrusion. 請求項１において、
上記膨出壁は上記山形突出部の外壁よりも薄いことを特徴とする自動車用ウェザストリップ。 In claim 1,
The weather strip for automobiles, wherein the bulging wall is thinner than the outer wall of the mountain-shaped protrusion. 請求項１又は請求項２において、
上記外壁は、上記ドアが上記山形突出部の先端部に押し当てられたときに、室内側に向かって湾曲するように反っていることを特徴とする自動車用ウェザストリップ。 In claim 1 or claim 2,
The automobile weather strip according to claim 1, wherein the outer wall is curved so as to bend toward the indoor side when the door is pressed against the tip of the mountain-shaped protrusion. 請求項１乃至請求項３のいずれか一において、
上記中空シール部は、室内側の内壁と室外側の外壁とにより形成された略三角溝形の断面形状を有する基部を備え、この溝形基部と上記山形突出部とによって断面略菱形状に形成されていることを特徴とする自動車用ウェザストリップ。 In any one of Claim 1 thru | or 3,
The hollow seal portion includes a base portion having a substantially triangular groove-shaped cross section formed by an inner wall on the indoor side and an outer wall on the outdoor side, and is formed in a substantially rhombic cross section by the groove-shaped base portion and the mountain-shaped protrusion. A weatherstrip for automobiles.
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