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Dokumentenidentifikation EP1190910 19.04.2007
EP-Veröffentlichungsnummer 0001190910
Titel DICHTUNGSSTREIFEN
Anmelder Kinugawa Rubber Industrial Co. Ltd., Chiba, JP
Erfinder IKUTA, Kenichi, Inage-ku Chiba-shi Chiba 263-0005, JP
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60127058
Vertragsstaaten DE, ES, FR, GB, IT
Sprache des Dokument EN
EP-Anmeldetag 22.03.2001
EP-Aktenzeichen 019156801
WO-Anmeldetag 22.03.2001
PCT-Aktenzeichen PCT/JP01/02258
WO-Veröffentlichungsnummer 2001070540
WO-Veröffentlichungsdatum 27.09.2001
EP-Offenlegungsdatum 27.03.2002
EP date of grant 07.03.2007
Veröffentlichungstag im Patentblatt 19.04.2007
IPC-Hauptklasse B60R 13/06(2006.01)A, F, I, 20051017, B, H, EP
IPC-Nebenklasse B60J 5/00(2006.01)A, L, I, 20051017, B, H, EP   B60J 10/00(2006.01)A, L, I, 20051017, B, H, EP   B60J 10/08(2006.01)A, L, I, 20051017, B, H, EP   

Beschreibung[en]
TECHNICAL FIELD

The present invention relates to a weather strip fitted to a body opening section of a motor vehicle.

BACKGROUND TECHNIQUE

As a weather strip fitted to a body flange 3 on a periphery of body opening sections 2 and 2a of a motor vehicle 1 as is seen in Fig. 1, a weather strip 4 as is seen in Fig. 2 is used on occasions. This weather strip 4 is of a type coupling a fitting base section (welt) 5 integrally with a hollow section (strip) 6. The fitting base section 5 sandwiches a body flange 3. The hollow section 6 has a cross section shaped approximately into numeral 8, and is constituted of a abutting section 7 which is formed with a seal hollow chamber 7a, and a middle section 8 which is integrated with the abutting section 7 and is provided with a hollow chamber 8a.

The fitting base section 5 has a core material 9, and is shaped approximately into U. The fitting base section 5 has an internal surface which is formed with flange-sandwiching lips 10, and an external surface which is formed with an ornament lip 11. The hollow section 6 is made of a comparatively soft elastic body such as a sponge rubber, a soft thermoplastic elastomer or the like. The fitting base section 5 is made of a comparatively hard material such as a solid rubber, a hard thermoplastic elastomer or the like. When the weather strip 4 is fitted to the body flange 3, the flange-sandwiching lips 10 sandwich a flange. Under the fitting condition, the ornament lip 11 is a section that contacts a garnish.

However, according to the weather strip 4 as described above, deflection of the hollow section 6 in fitting sections indicated by A to I of the body opening sections 2 and 2a varies with an input direction F (F1, F2, F3 and F4) of a seal surface 12a of a door panel 12, as is seen in Fig. 3 and Fig. 4.

Namely, as is seen in Fig. 3, in fitting sections C, G, A, E, B and F, the input (F1, F2 and F3) is applied in such a manner as to push the hollow section 6 toward an outside of the periphery of the body opening sections 2 and 2a. On the other hand, as is seen in Fig. 4, in a fitting section D on a front side of a center pillar 1a, in a fitting section I on a front side of a rear pillar 1b, and in a fitting section H below the rear pillar 1b, the input (F4) is applied in such a manner as to push the hollow section 6 toward the fitting base section 5.

Thereby, in view of an entire circumference of the body opening sections 2 and 2a, the hollow section 6 is twisted and thereby is not constant in shape (of deflection), especially, in an area where the fitting sections D, I and H change to other sections. Thereby, failures occur such as lines so generated as to increase wind noise, water tightness decreased, and external appearance deteriorated. Above all, the above phenomena notably appear at an upper corner on the front side of the center pillar 1a of the body opening section 2.

Whereupon, in view of the above circumstances, the present invention provides such a weather strip as to allow the hollow section 6 to assume an approximately the same shape (of deflection) in each section, irrespective of the input direction of the seal surface 12a when the door panel 12 is closed.

An example of the prior art is shown in EP 0 687 839.

DISCLOSURE OF THE INVENTION

Under the present invention, in a weather strip forming a hollow section and a fitting base section which is fitted to a body opening section, the hollow section being provided with a seal hollow chamber integrated with a hollow chamber, a seal surface of a door panel abutting on a side defining the seal hollow chamber, the weather strip sealing a gap between the body opening section and the door panel, a bulkhead between the seal hollow chamber and the hollow chamber is so configured as to form an opening angle not smaller than right angle toward an outside of the body opening section constantly in each section on a periphery of the body opening section, relative to an input direction of the seal surface of the door panel toward the seal hollow chamber of the weather strip in each section on the periphery of the body opening section.

In each section, an extended line of the bulkhead in the cross sectional direction turns from the outside of the body opening section toward an inside of a vehicular body with a load inputted into the weather strip when the door panel is closed. As a result, the seal hollow chamber is partially pushed in such a manner as to protrude between the door panel and an outside of the periphery of the body opening section.

Thereby, deflection at the corner of the door panel becomes uniform and constant with the other sections. Therefore, bend lines are prevented, seal reactive force is stabilized, wind noise is prevented, decrease in water tightness is prevented, and deterioration of closing the door panel is prevented.

BRIEF EXPLANATION OF THE DRAWINGS

Fig. 1 is a side view of a motor vehicle partially omitted, showing fitting sections for fitting a weather strip. Fig. 2 shows a cross section of a conventional weather strip. Fig. 3 shows a drawing for explaining an operation of the conventional weather strip in fitting sections C, G, A, E, B and F. Fig. 4 shows a drawing for explaining the operation of the conventional weather strip in fitting sections D, I and H. Fig. 5 shows a drawing for explaining a fundamental constitution (first example) of the present invention. Fig. 6 shows a drawing for explaining an operation of the fundamental constitution of the present invention. Fig. 7 shows a drawing for explaining a constitution of the weather strip according to a second example of the present invention. Fig. 8 shows a cross section of the weather strip, according to the second example added by a third example of the present invention. Fig. 9 shows a cross section of the weather strip, according to the second example added by a fourth example of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter explained based on drawings are examples of the present invention. As is seen in Fig. 5, a weather strip 30 of the present invention is provided with a fitting base section 5 having the same constitution as that of the above conventional example, and provided with a hollow section 6 having a constitution new over that of the above conventional example. Namely, a bulkhead 31 of the hollow section 6 or a line X-X forms right angle or right angle plus an angle &agr;, relative to an input direction (F4) corresponding to fitting sections D, I, and H. The bulkhead 31 partitions the hollow section 6 into a abutting section 7 and a middle section 8. The line X-X runs from an inside neck section 32 to an outside neck section 33. The inside neck section 32 of the hollow section 6 is disposed on an inside of a periphery of a body opening section, while the outside neck section 33 of the hollow section 6 is disposed on an outside of the periphery of the body opening section. En passant, an input direction (F1, F2 and F3) toward the weather strip 30 corresponding to fitting sections C, G, A, E, B and F forms an angle (&thgr;), relative to the bulk head 31. The angle (6) is greater than right angle.

In the input direction (F4) corresponding to the fitting section D on a front side of a center pillar (1a), the fitting section I on a front side of a rear pillar (1b) and the fitting section H below the rear pillar 1b, an extended line of the bulkhead 31 turns toward an inside of a vehicular body in the clockwise direction around the inside neck section 32 on the inside of the periphery of the body opening section. As a result, the hollow section 6 formed as described above allows a seal hollow chamber 7a to be partially pushed in such a condition that the seal hollow chamber 7a protrudes between a door panel 12 and the outside of the periphery of a body opening section, as is seen in Fig. 6. Moreover, in the input directions (F1, F2 and F3) corresponding to the other fitting sections C, G, A, E, B and F, the seal hollow chamber 7a assumes the same deformation, as a matter of course. Thereby, the weather strip 30 assumes the same deflection constantly, irrespective of the input direction when the door panel 12 is closed.

In order to encourage and accelerate inclination of the abutting section 7 toward the outside of the periphery of the body opening sections 2 and 2a in the input direction (F4) corresponding to the fitting sections D, I and H, a top section 34 of the abutting section 7 of the hollow section 6 is disposed equal to an input line Y-Y (A = 0) or outside the input line Y-Y (outside the periphery of the body opening sections 2 and 2a, A > 0), as is seen in Fig. 7. In this case, the bulkhead 31 is inclined as described above. The input line Y-Y is a line on which a seal surface 12a of the door panel in the fitting sections D, I and H proceeds into the weather strip, and the input line Y-Y is disposed most outside on the periphery of the body opening section. Namely, the seal hollow chamber 7a is formed with the top section 34 which becomes a bend point of deflection when the door panel is closed. When the door panel is closed; on the front side of the center pillar, on the front side of the rear pillar and below the rear pillar, the top section 34 is disposed on the input line Y-Y (which is disposed most outside on the periphery of the body opening section) or disposed in such a manner as to be deflected more outward than the input line Y-Y on the periphery of the body opening section.

Thereby, the abutting section 7 is likely to be inclined toward the outside of the periphery of the body opening sections 2 and 2a, in the input direction (F4) corresponding to the fitting sections D, I and H. In the input directions (F1, F2 and F3) corresponding to the other fitting sections C, G, A, E, B and F, the abutting section 7 assumes the same deformation, as a matter of course. Thereby, the weather strip 30 assumes the same deflection constantly, irrespective of the input direction when the door panel 12 is closed.

Furthermore, under the condition that the bulkhead 31 is inclined as described above, as is seen in Fig. 8, the outside neck section 33 of the weather strip 30 outside the periphery of the body opening section is formed with a notch section 35. The notch section 35 is disposed at one end of a bridge section 37 which has the other end defining an internal surface formed with a notch portion 36. With the thus formed notch sections 35 and 36, the bridge section 37 is more deformable than the other sections, via the notch sections 35 and 36, in the input direction (F4) corresponding to the fitting sections D, I and H. The extended line of the bulkhead 31 turns toward the inside of the vehicular body in the clockwise direction around the inside neck section 32 inside the periphery of the body opening section. Thereby, the abutting section 7 is likely to be inclined toward the outside of the periphery of the body opening sections 2 and 2a. In the input directions corresponding to the other fitting sections C, G, A, E, B and F, the abutting section 7 assumes the same deformation, as a matter of course.

Still furthermore, under the condition that the bulkhead 31 is inclined as described above, as is seen in Fig. 9, the bridge section 37 has a thickness t which is smaller than a thickness of the other sections of the hollow chamber 8a. With this, the bridge section 37 is more deformable than the other sections in the input direction (F4) corresponding to the fitting sections D, I and H. The extended line of the bulkhead 31 turns toward the inside of the vehicular body in the clockwise direction around the inside neck section 32 inside the periphery of the body opening section. Thereby, the abutting section 7 is likely to be inclined toward the outside of the periphery of the body opening sections 2 and 2a. In the input directions corresponding to the other fitting sections C, G, A, E, B and F, the abutting section 7 assumes the same deformation, as a matter of course.

The above summarizes that the deformation in the input direction (F4) corresponding to the fitting sections D, I and H is assuredly formed approximately equal to the deformation in the input directions (F1, F2 and F3) corresponding to the fitting sections C, G, A, E, B and F, through the following first doing added by the following second doing, third doing or fourth doing. First doing: Allowing the bulkhead 31 to form right angle or the angle (&thgr;) (&thgr;: greater than right angle) relative to the opening-closing direction F of the door panel 12, which bulkhead 31 partitions the hollow section 6 of the weather strip 30 into the abutting section 7 and the middle section 8. Second doing: Allowing the top section 34 of the abutting section 7 to be disposed equal to the input line Y-Y (A = 0) or outside the input line Y-Y (outside the periphery of the body opening sections 2 and 2a, A > 0), the input line Y-Y being the line on which the seal surface 12a of the door panel in the fitting sections D, I and H proceeds into the weather strip, and the input line Y-Y being disposed most outside on the periphery of the body opening section. Third doing: Allowing the bridge section 37 to be formed with the notch sections 35 and 36 at each end of the bridge section 37. Fourth doing: Allowing the bridge section 37 to have the thickness t which is smaller than the thickness of the other sections of the hollow chamber 8a. Therefore, the above allows the deflection to be constant in any sections of the weather strip 30.


Anspruch[de]
Dichtungsstreifen (30) zur Abdichtung eines Zwischenraumes zwischen einem Türblech (12) und einem Öffnungsabschnittes einer Fahrzeugkarosserie (2, 2a), wobei der Dichtungsstreifen umfasst: ein an eine Peripherie des Karosserieöffnungsabschnitts (2, 2a) einbaubarer Befestigungs-Basisabschnitt (5); und ein mit dem Basisabschnitt (5) integral ausgeformter hohler Abschnitt (6), welcher umfasst: einen Berührungsabschnitt (7) aufweisend eine Seite, welche in Berührung mit einer Dichtfläche (12a) des Türblechs (12) kommt, und einen Hohlraum (8a) vorgibt; einen Trennsteg (31), welcher den hohlen Abschnitt (6) in den Berührungsabschnitt (7) und einen Mittelabschnitt (8) unterteilt; und einen inneren Halsabschnitt (32) und einen äußeren Halsabschnitt (33), welche entsprechend auf einer durch den Trennsteg (31) verlaufenden Linie (X-X) auf einer Innenseite und auf einer Außenseite der Peripherie des Karosserieöffnungsabschnittes (2, 2a) angeordnet sind; dadurch gekennzeichnet,

dass sich eine Wirkrichtung (F), entlang welcher die Dichtfläche (12a) des Türblechs (12) bei Schließen der Tür in einen geschlossenen Hohlraum (7a) verläuft, in jedem Abschnitt (A, B, C, D, E, F, G, H, I) der Peripherie des Karosserieöffnungsabschnittes (2, 2a) unterscheidet; und

dass sich der Trennsteg (31) bei Schließen der Tür im Uhrzeigersinn um den inneren Halsabschnitt (32) in Richtung einer Innenseite der Fahrzeugkarosserie derart dreht, dass die Linie (X-X) einen Winkel (&thgr;) ≥ 90° mit der Wirkrichtung (F) in jedem Abschnitt (A, B, C, D, E, F, G, H, I) der Peripherie des Karosserieöffnungsabschnittes (2, 2a) bildet.
Dichtungsstreifen (30) nach Anspruch 1, dadurch gekennzeichnet, dass der hohle Abschnitt (6) einen Zwischensteg (37) aufweist, welcher sich zwischen dem Trennsteg (31) und dem Basisabschnitt (5) außerhalb der Peripherie des Karosserieöffnungsabschnittes (2, 2a) erstreckt und welcher nicht an ein auf der Peripherie des Karosserieöffnungsabschnittes (2, 2a) angeordnetes Element angrenzt. Dichtungsstreifen (30) nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der hohle Abschnitt (6) einen oberen Punkt (34) aufweist, welcher in der Nähe des geschlossenen Hohlraums (7a) derart ausgebildet ist, dass der hohle Abschnitt (6) nach Schließen des Türblechs (12) einen Knick in dem oberen Punkt (34) formt und dass der obere Punkt (34) in oder außerhalb der Wirkrichtung (F) auf einer Vorderseite einer Mittelsäule (1a) des Fahrzeuges (1), auf einer Vorderseite einer Hecksäule (1 b) des Fahrzeuges (1) und unterhalb der Hecksäule (1 b) angeordnet ist. Dichtungsstreifen (30) nach Anspruch 2, dadurch gekennzeichnet, dass der Zwischensteg (37) an seinen Enden Einkerbungen (35, 36) aufweist. Dichtungsstreifen (30) nach Anspruch 2, dadurch gekennzeichnet, dass der Zwischensteg (37) dünner als jeder andere Teilbereich des hohlen Abschnitts (6) ist.
Anspruch[en]
A weather strip (30) for sealing a gap between a door panel (12) and a body opening section (2, 2a) of a motor vehicle, the weather strip including: a fitting base section (5) fitted on a periphery of the body opening section (2, 2a); and a hollow section (6) being integral with the base section (5) and including: an abutting section (7) having a side on which a seal surface (12a) of the door panel (12) abuts and defining therein a hollow chamber (8a); a bulkhead (31) partitioning the hollow section (6) into the abutting section (7) and the middle section (8); and an inside neck section (32) and an outside neck section (33) located on a line (X-X) through the bulkhead (31) on an inside and an outside of the periphery of the body opening section (2, 2a), respectively, characterized in

that an input direction (F), on which a seal surface (12a) of the door panel (12) proceeds into the seal hollow chamber (7a) by closing the door, differs in each section (A, B, C, D, E, F, G, H, I) on the periphery of the body opening section (2, 2a); and

that the bulkhead (31) tums, by closing the door, toward an inside of a vehicle body in a clockwise direction around the inside neck section (32) in such a manner that the line (X-X) forms an angle (&thgr;) not smaller than a right angle relative to the input direction (F) in any section (A, B, C, D, E, F, G, H, I) on the periphery of the body opening section (2, 2a).
The weather strip (30) according to claim 1 characterized in that the hollow section (6) has a bridge (37) extending between the bulkhead (31) and the fitting base section (5) outside of the periphery of the body opening section (2, 2a) and being free from abutment with a member that is disposed on the periphery of the body opening section (2, 2a). The weather strip (30) according to claim 1 or 2 characterized in that the hollow section (6) has a top point (34) formed around the seal hollow chamber (7a) in such a manner that the hollow section (6) takes a bend in the top point (34) upon closing of the door panel (12) and wherein the top point (34) is located on or outside the input direction (F) on a front side of a center pillar (1 a) of the vehicle (1), on a front side of a rear pillar (1 b) of the vehicle (1) and below the rear pillar (1 b). The weather strip (30) according to claim 2 characterized in that the bridge (37) has notches (35, 36) formed in both ends thereof. The weather strip (30) according to claim 2 characterized in that the bridge (37) is smaller in thickness than any other portion of the hollow section (6).
Anspruch[fr]
Bande d'étanchéité (30) pour rendre étanche un espace entre un panneau de porte (12) et une section d'ouverture de caisse (2, 2a) d'un véhicule moteur, la bande d'étanchéité comprenant : une section de base de montage (5) montée sur une périphérie de la section d'ouverture de caisse (2, 2a), et une section creuse (6) réalisée intégralement avec la section de base (5) et comprenant : une section de butée (7) avec un côté sur lequel une surface de scellement (12a) du panneau de porte (12) bute et définissant à l'intérieur une chambre creuse (8a) ; une cloison (31) séparant la section creuse (6) en section de butée (7) et section médiane (8); et une section de col intérieure (32) et une section de col extérieure (33) situées sur une ligne (X-X) à travers la cloison (31) sur un intérieur et un extérieur de la périphérie de la section d'ouverture de caisse (2, 2a), respectivement, caractérisée en ce

qu'une direction d'entrée (F), selon laquelle une surface de scellement (12a) du panneau de porte (12) avance dans la chambre creuse étanche (7a) en fermant la porte, diffère dans chaque section (A, B, C, D, E, F, G, H, I) sur la périphérie de la section d'ouverture de caisse (2, 2a) ; et

en ce que la cloison (31) tourne, en fermant la porte, vers l'intérieur d'une caisse de véhicule dans le sens des aiguilles d'une montre autour de la section de col intérieure (32) de telle manière que la ligne (X-X) forme un angle (&thgr;) qui n'est pas plus petit qu'un angle droit relativement à la direction d'entrée (F) dans n'importe quelle section (A, B, C, D, E, F, G, H, I) sur la périphérie de la section d'ouverture de caisse (2, 2a).
Bande d'étanchéité (30) selon la revendication 1, caractérisée en ce que la section creuse (6) possède un pont (37) s'étendant entre la cloison (31) et la section de base de montage (5) à l'extérieur de la périphérie de la section d'ouverture de caisse (2, 2a), et ne butant pas contre un élément qui est disposé sur la périphérie de la section d'ouverture de caisse (2, 2a). Bande d'étanchéité (30) selon la revendication 1 ou 2, caractérisée en ce que la section creuse (6) présente un point supérieur (34) formé autour de la chambre creuse étanche (7a) de telle manière que la section creuse (6) présente une courbure dans le point supérieur (34) lors de la fermeture du panneau de porte (12), et où le point supérieur (34) se situe sur ou à l'extérieur de la direction d'entrée (F) sur un côté frontal d'un pilier central (1a) du véhicule (1), sur un côté frontal du pilier arrière (1b) du véhicule (1) et en dessous du pilier arrière (1b). Bande d'étanchéité (30) selon la revendication 2, caractérisée en ce que le pont (37) présente des encoches (35, 36) formées à ses deux extrémités. Bande d'étanchéité (30) selon la revendication 2, caractérisée en ce que le pont (37) a une épaisseur plus petite que n'importe quelle autre portion de la section creuse (6).






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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