JP2002059746A - Door parting seal of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door parting seal of which a seal lip is not projected from a gap of a parting part and which faithfully follows an angle variation of a panel being a mounting part although it is simultaneously molded to a uniform cross section shape. SOLUTION: An intermediate web 8 is extended and integrally formed with a welt part 7 engaged with a heming bonding part 4 and a circular seal lip 9 of a cantilever support structure is formed on a tip end of the intermediate web 8. The seal lip 9 is formed such that it is not projected to the outside of a door outer surface. The intermediate web 8 has a bendable/deformable structure from a base part and follows an angle θ variation of a front wall surface 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a door parting seal for an automobile, and more particularly to a parting part between a front fender and a front door of an automobile or a parting part between a front door and a rear door. Of which, below the door waist,
To improve sound insulation and suppress wind noise, it is arranged along the vertical direction at the edge of one of the doors before and after the parting part is formed, so as to close the gap between the parting parts The present invention relates to a structure of a door parting seal.

[0002]

2. Description of the Related Art A typical example of a door parting seal of this kind is disclosed in Japanese Patent No. 2672134.

In this conventional technique, for example, a parting portion formed by a front door and a rear door is fitted to one of a rear edge of the front door and a front edge of the rear door to a flange portion on the door side. A parting seal in which a welt portion and a hollow seal lip are integrally formed is provided. When the door is closed, the hollow seal lip is pressed against the edges of both doors and a part of the hollow seal lip is door-parted. It protrudes from the gap of the part to the outside of the vehicle compartment more than the outer surface of the door to fill the gap.

[0004]

In the conventional structure as described above, a part of the hollow seal lip is positively protruded to the outside, so that not only the external appearance is poor but also the appearance of the door when the door is closed. It is expected that the amount of protrusion will vary depending on the hit, and there is still room for improvement.

In addition, when the hollow sealing lip has a uniform cross-sectional shape while receiving the hollow sealing lip at a corner formed by a hemming joint portion of the door panel and a vertical wall portion adjacent to the hemming joint portion, If the shape of the surface that the hollow seal lip contacts changes in the vertical direction, the hollow seal lip cannot follow the change in the shape. Therefore, even if the general part of the hollow seal lip can be formed by so-called extrusion molding,
As described above, the part where the panel shape changes needs to be partially molded by a mold forming method to have a shape that can follow the panel shape change, and as a result, the cost of the parting seal is unavoidably increased. This is not preferred.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and aims at improving the appearance by preventing the seal lip of the door parting seal from protruding from the gap of the parting portion. It is an object of the present invention to provide a door parting seal structure which can flexibly follow a shape change of a door panel while having a uniform cross-sectional shape by itself.

[0007]

According to a first aspect of the present invention, a parting portion formed between a front fender and a front door of a vehicle or a parting portion formed between a front door and a rear door is formed. It is assumed that the door parting seal has a structure in which a seal lip is provided at an end edge of any one of the front and rear doors to close a gap between the parting portions.

Further, the door parting seal is formed to extend from a side wall of the welt portion at a predetermined angle from a welt portion having a substantially U-shaped cross section which is fitted and held in a hemming connection portion of the door panel. An intermediate web formed along a stepped wall portion of the door panel adjacent to the hemming connection portion, and a gap extending substantially from the intermediate web and having a substantially fan-shaped cross section together with one side wall portion and the intermediate web of the welt portion And an arc-shaped seal lip of a cantilever support structure with which a panel on the other side is pressed against when the door is closed, and the intermediate web together with the seal lip has an angle of a stepped wall portion on the other side. It is characterized in that it can be deformed to follow in response to a change in.

According to the second aspect of the present invention, the intermediate web is formed at an angle of about 45 ° to 90 ° with respect to the stepped wall portion on the opposite side and an extension of the panel surface of the hemming joint portion.
It is characterized by being able to follow and deform within the range of.

Therefore, according to the first and second aspects of the present invention, when the door is closed, the mating panel presses against the seal lip to close the gap in the parting portion and closes the seal lip. At this time, since the seal lip itself has a cantilever support structure, even though the seal lip forms a cavity having a substantially fan-shaped cross section together with one side wall portion and the intermediate web of the welt portion, the above-mentioned mating panel is used. The seal lip is flexed and deformed by receiving the pressure contact so as to crush and deform the gap, and does not protrude from the gap of the parting portion.

In addition, even if the angle formed between the hemming connection portion to which the welt portion is fitted and the stepped wall portion adjacent thereto in the door panel to which the door parting seal is attached is changed in the vertical direction, The intermediate web, which comes into contact with the portion, changes together with the seal lip of the cantilever support structure in accordance with its angle change. Therefore, even at the portions having the different angles, the door parting seal extruded with a uniform cross-sectional shape can be sealed.

Further, the invention according to claim 3 is based on the premise of the invention according to claim 1 or 2, and seals when the door is opened regardless of a change in the angle of the intermediate web following the stepped wall portion. It is characterized in that a predetermined gap is secured between the lip and the tip of the lip without contacting the surface of the welt.

Therefore, according to the third aspect of the present invention, since the bending deformation of the seal lip due to the pressure contact of the mating panel is not restrained from the initial stage by the contact with the welt portion, the seal lip is formed by the gap. Smoothly bends and deforms from the connection base with the intermediate web to crush the portion. This makes it possible to more reliably prevent a deformation such that a part of the seal lip protrudes outside from the gap of the parting portion.

[0014]

According to the first and second aspects of the present invention, the seal lip of the welt fitting type door parting seal is of a cantilevered support structure, so that it is similar to a conventional hollow seal lip. When the door is closed, the bending deformation is not restrained, and the sealing lip is smoothly bent and deformed by receiving the pressing force of the mating panel, so that the sealing lip does not protrude outside from the gap of the parting part. The appearance is greatly improved.

In addition, the intermediate web easily deforms following the change of the angle of the stepped wall on the door panel side.
Even at the portions having different angles as described above, it is possible to seal with a door parting seal extruded with a uniform sectional shape. As a result, the area in which the door parting seal must be molded in order to cope with a partial panel shape change can be significantly reduced or eliminated compared to the past, and the door parting seal can be reduced. This has the effect of contributing to cost reduction.

According to the third aspect of the present invention, the bending deformation of the seal lip due to the pressure contact of the mating panel is not restrained from the initial stage by the contact with the welt portion. Thus, deformation such that a part of the seal lip protrudes outward from the gap can be more reliably prevented, and there is an effect that the appearance is further improved.

[0017]

1 to 7 show a preferred embodiment of a door parting seal according to the present invention. In particular, FIGS. 2 to 6 show a front door 1 and a rear door 2 as shown in FIG. This shows an example in which the present invention is applied to a part below a door waist part W in a parting part formed by the above.

In FIG. 2, reference numeral 1 denotes a front door, and 2 denotes a rear door. Each of these doors 1 and 2 is a well-known connection between a door outer panel 1a or 2a and a door inner panel 1b or 2b. 3
Or, it is configured by hemming coupling at 4. A door parting seal 5 is provided along the vertical direction at the front edge of the rear door 2 which faces the rear edge of the front door 1. When the hemming joint 3 of the front door 1 is pressed against the seal lip 9 of the door parting seal 5 in the closed state, the door part, that is, the gap between the doors 1 and 2 is sealed. I have. The door parting seal 5 is shown in FIG.
As shown in FIG. 3, a long material is formed by extrusion molding of a rubber material such as EPDM into a uniform sectional shape by a known extrusion molding method.

The above-mentioned door parting seal 5 is formed around a welt portion 7 having a metal core 6 and having a substantially U-shaped cross section, which is fitted and held in the hemming connection portion 4 at the front end of the rear door 1. The intermediate web 8 extends obliquely from one side wall portion of the welt portion 7.
Further, a seal lip 9 that is thinner than the intermediate web 8 and that is curved in a substantially arc shape is formed extending from the tip of the intermediate web 8 toward the base side of the welt portion 7 in a cantilever manner. A void 10 having a substantially fan-shaped cross section is formed together with one side wall of the welt 7 and the intermediate web 8.

Regardless of whether the doors 1 and 2 are open or closed, the tip 9a of the corner formed by the intermediate web 8 and the seal lip 9 is located outside the doors 1 and 2. The intermediate web 8 is set so that it does not protrude outward from the surface, and the core 6 is embedded in the welt portion 7 whereas the core is not embedded in the intermediate web 8. It can be bent and deformed from its root, which is the connection with the welt 7.

When the door part seal 5 is fixed by fitting the welt portion 7 to the hemming connection portion 4 on the rear door 2 side, the intermediate web 8 and the seal lip 9
Of the rear door 2 is pressed against the front wall surface 11, which is a stepped wall portion close to the hemming connection portion 4, of the rear door 2, while the tip of the seal lip 9 A predetermined gap G is formed therebetween.

Here, as is apparent from FIGS. 2A and 2B, the angle between the front wall surface 11 which is the stepped wall portion of the door outer panel 2a of the rear door 2 and the door inner panel 2b (welt portion) The angle θ formed between the extension of the panel surface of the hemming connection portion 4 and the front wall surface 11 into which the head 7 is fitted is not constant in the vertical direction, and the door waist shown in FIG. The inclination of the front wall surface 11 is set to increase as the distance to the portion W increases, and the angle θ is gradually reduced. In the present embodiment, the inclination of the front wall surface 11 Regardless of the change, a long door parting seal 5 extruded into a uniform cross-sectional shape as described above is used.

That is, even if the angle of the front wall surface 11 is gradually changed in the vertical direction, the seal lip 9 is not a hollow seal lip shape but a cantilever support structure and has a high degree of freedom in deformation. Since the intermediate web 8 of the door parting seal 5 that comes into pressure contact with the seal lip 9 can be easily bent and deformed from the root thereof together with the seal lip 9, the intermediate web 8 can be inclined at any angle in the vertical direction. It closely follows and presses against the front wall surface 11.

Therefore, according to the present embodiment, when the door parting seal 5 is fixed to the rear door 2 by fitting the welt portion 7 to the hemming connection portion 4, regardless of the magnitude of the angle θ, the door In any part of the parting seal 5, the back side of the intermediate web 8 is pressed against the front wall surface 11 with self-elasticity, and at the same time, when at least one of the doors 1 and 2 is open, the seal lip is opened. The tip of 9 and the welt 7
Is provided with a predetermined gap G.

Here, the inclination of the intermediate web 8 alone (the inclination corresponding to the angle θ) of the door parting seal 5 alone.
Is set in advance to such a size as to be able to follow the angle θ within the range of about 45 ° to 90 ° without difficulty.

As shown in FIGS. 3 and 4, when both doors 1 and 2 are closed, the hemming joint 3 at the rear end of the front door 1 is pressed against the seal lip 9 and the doors 1 and 2 located in front and behind them , 2 are closed by sealing lips 9 as if they were filled.

At this moment, at the moment when the hemming joint 3 on the front door 1 side is pressed against the seal lip 9, a predetermined gap G is previously formed between the tip of the seal lip 9 and the welt portion 7 as described above. Since the seal lip 9 is secured, the bending deformation of the seal lip 9 itself is not restrained from an early stage, and the seal lip 9 does not bulge outward and squeezes the gap 10 inside the seal lip 9 so as to be smooth. Deformed,
The parting portion of the front door 1 is closed with a pressing force against the hemming connection portion 3. Thereby, a part of the seal lip 9 does not protrude outside the outermost surfaces of the doors 1 and 2.

Here, as shown in FIGS. 5 and 6, a terminal portion 12 is provided at the lower end of the door parting seal 5 with a joining line 1.
The terminal portion 12 is integrally formed by a metal mold, and the terminal portion 12 is formed at a position offset with respect to the axis of the general portion of the door parting seal 5 itself. Are fixed to the door inner panel 2b. As the clip 15, a type in which the head 15a is curved in accordance with the cross-sectional shape of the lower end portion of the door inner panel 2b and the terminal portion 12, while the anchor portion 15b is offset upward is used. You. As a result, the door inner panel 2
Although the position of the anchor portion 15b with respect to b cannot be set extremely downward, the fixed holding force of the anchor portion 15b can be applied to the lowermost end of the terminal portion 12.

On the other hand, the parting part between the front fender 16 and the front door 1 shown in FIG.
As shown in (1), a door parting seal 5 exactly the same as that described above is employed, so that the same function as described above is exerted on this parting part.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of an automobile to which the present invention is applied.

FIG. 2 is a diagram showing a preferred embodiment of the present invention;
(A) is a cross-sectional view when the door is opened along the line aa of FIG. 1,
FIG. 2B is a cross-sectional view along the line bb in FIG. 1 when the door is opened.

FIG. 3 is a sectional view when the door is closed from the state shown in FIG.

FIG. 4 is a sectional view when the door is closed from the state of FIG. 2B.

FIG. 5 is a perspective view of a main part of the door parting seal.

FIG. 6 is a sectional view taken along line dd in FIG. 5;

FIG. 7 is a sectional view taken along the line cc of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front door 2 ... Rear door 2a ... Rear door door outer panel 2b ... Rear door door inner panel 4 ... Hemming connection part 5 ... Door parting seal 7 ... Welt part 8 ... Intermediate web 9 ... Seal lip 10 ... Void part 11 ... Front Wall (stepped wall)

Claims (3)

[Claims] 1. A parting part formed by a front fender and a front door or a parting part formed by a front door and a rear door of an automobile is formed along an edge of one of doors forming the parting part in a vertical direction. A door parting seal having a sealing lip that closes the gap between the parting parts, and having a substantially U-shaped cross section that is fitted and held in the hemming joint part of the door panel.
-Shaped welt portion, an intermediate web extending from one side wall portion of the welt portion at a predetermined angle and formed along a stepped wall portion close to the hemming joint portion of the door panel; and An arc-shaped seal lip of a cantilever support structure that is formed to extend and form a cavity having a substantially fan-shaped cross section together with one side wall portion and the intermediate web of the welt portion, and a mating panel is pressed against when the door is closed. A door parting seal for an automobile, characterized in that the intermediate web and the sealing lip are capable of following deformation in accordance with a change in the angle of a stepped wall portion on the other side. 2. The intermediate web is capable of following deformation within an angle of approximately 45 ° to 90 ° as an angle formed between a stepped wall portion on the opposite side and an extension of a panel surface of the hemming connection portion. The door parting seal for an automobile according to claim 1, wherein: 3. A predetermined gap is secured between the two members without the tip of the seal lip coming into contact with the surface of the welt portion when the door is opened, regardless of the change in the angle of the intermediate web following the stepped wall portion. 2. The method according to claim 1, wherein
Or a door parting seal for an automobile according to item 2.