JPH11129765A - Opening trim - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the assemblage to a vehicle, the sealability, and the appearance by preventing the return deformation in forming a curved part at a corner part. SOLUTION: An opening trim 11 is provided with a fitting part 13 to be fitted to an opening edge of a vehicle body, and a seal part 14 to seal a clearance from an opening/closing panel, the seal part 14 is cut at a curved corner part 12a, and a curved die-formed part 17 is formed at the cut part. The die- formed part 17 is formed of soft thermoplastic elastomer, and a curve return preventive part extending in the circumferential direction of the corner part 12a is injection-molded using hard resin at the fitting part 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile, which is mounted on an opening edge of a side door, a hatchback door, a trunk or the like of an automobile. And an opening trim for sealing a gap of the opening trim.

[0002]

2. Description of the Related Art As shown in FIGS. 5 to 7, an opening trim 51 is attached to a flange 2 at a door opening edge of a vehicle body 1 so as to seal a gap between the door panel 3 and the door panel 3 when the door panel 3 comes into contact with the opening trim. It has become. The main part of the opening trim 51 except the molded part is a rubber extruded product 5
2 is comprised. The rubber extruded product 52 is formed by co-extrusion of a mounting portion 53 and a lip portion 55 made of solid rubber and a hollow sealing portion 54 made of sponge rubber.
A metal reinforcing insert 56 having a substantially U-shaped cross section is embedded in the mounting portion 53. A cover layer 61 for decorating the surface with a cloth, a synthetic resin sheet, a colored resin extruded material, or the like is provided from the boundary between the attachment portion 53 and the seal portion 54 to the back side of the leading edge of the lip portion 55.

The corner portion 52a of the rubber extruded product 52 is formed to be curved so as to conform to the shape of the corner of the door panel 3 and has a projecting portion that projects outward from the outer peripheral contour line of the mounting portion 53. A forming part 57 is provided. In order to form the molded portion 57, first, at the corner portion 52a, an inner peripheral portion 54a which is an inner peripheral side when the rubber extruded product 52 is curved and an outer peripheral portion 54b which is an outer peripheral side are left. The seal portion 54 is cut off. And door panel 3
The rubber extruded product 52 is set in a mold in a state where it is curved so as to match the corner of the mold, and sponge rubber is injected into the cut portion to form the molded part 57.

[0004]

However, FIG. 8 (a)
When the rubber extruded product 52 is released from the mold after the molded portion 57 is formed as shown in FIG. 8B, the curved corner portion 52a is restored by the restoring force of the insert 56 and the like as shown in FIG. As shown in FIG. For this reason, when assembling to a vehicle, the operator must manually re-curve the corner portion 52a so as to match the corner shape of the door panel 3, which is troublesome.

When the corner 52a is restored to a straight line, the overhanging portion of the molded portion 57 is deformed into a wavy shape by loosening the hem portions 57a on both sides as shown in FIG. 8 (b). If a long period of time elapses in this deformed state, the overhanging portion has a wavy shape, and there has been a problem that the sealability and the appearance are reduced at the overhanging portion.

Further, since the molding part 57 is formed of sponge rubber, a heating die is used for vulcanization. In order to prevent the surface of the cover layer 61 from being melted by the heat of the heating mold, the inner peripheral portion 54a of the seal portion 54 to which the mold forming portion 57 is mold-connected is left wider, and the inner peripheral portion 54a Is used as a heat insulating material, and the heat of the mold is
It was necessary to make it difficult to transmit to the surface. For this reason,
Boundary 51a of mold connection between inner peripheral portion 54a and mold forming portion 57
However, it became a position easily visible from the outside, and the appearance was deteriorated.

Furthermore, since the leading edge of the overhanging portion of the molded portion 57 is a free end, the sealability and appearance may be deteriorated due to turning over and wobbling due to opening and closing of the door panel and aging. .

SUMMARY OF THE INVENTION An object of the present invention is to provide an opening trim that solves the above-mentioned problems and prevents the return deformation of a curved portion at a corner portion, thereby improving the assembling property to a vehicle, the sealing property and the appearance. It is in.

[0009]

In order to achieve the above object, an opening trim according to the present invention includes a mounting portion attached to an opening edge of a vehicle body, and a sealing portion for sealing a gap between the opening and closing panel. In the opening trim in which the seal portion is cut off at the cut corner portion and a curved molded portion is formed at the cut portion, the molded portion is a soft thermoplastic elastomer (hereinafter, referred to as TPE).
And a curved restoration preventing portion extending in a circumferential direction of the corner portion is formed on the mounting portion by injection molding of a hard resin material.

[0010] The molded portion includes a projecting portion projecting outward from an outer peripheral contour line of the mounting portion, and a strip-shaped bridge portion connecting an outer peripheral edge of the projecting portion and the mounting portion. It is preferable to provide

Here, the area in which the bending restoration preventing portion is disposed in the mounting portion is not particularly limited, but it is preferable that the bending restoration preventing portion has a width portion parallel to a side wall of the mounting portion. In addition, the effect of preventing the curved corner portion from being restored is large. For example, if the mounting portion has a U-shaped cross section,
It can be exemplified to dispose it on the inner side surface or the outer side surface of the character (including a portion that appears when the seal portion is cut off).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 5, the present invention is attached to a door opening edge of a front side door of a vehicle body 1 and receives abutment of the front door panel 3 as shown in FIG.
An embodiment example of an opening trim for sealing a gap between the opening trim and the opening will be described with reference to the drawings.

FIGS. 1 to 3 show an opening trim 11 of the present embodiment. A main part of the opening trim 11 except for a molded portion is constituted by a rubber extruded product 12. The rubber extruded product 12 includes a U-shaped mounting portion (trim portion) 13 and a lip portion 15 made of EPDM (ethylene-propylene-diene copolymer) solid rubber, and an EP
The hollow sealing portion 14 made of DM sponge rubber is co-extruded. In the mounting portion 13, a reinforcing insert 25 having a substantially U-shaped cross section is embedded. A cover layer 24 for surface decoration is provided by a colored TPE extruded material from a boundary between the attachment portion 13 and the seal portion 14 to the back side of the leading edge of the lip portion 15. The attachment portion 13 is attached to the flange 2 at the door opening edge, the seal portion 14 seals a gap with the door panel 3, and the lip portion 15 is
On the side opposite to 4, the edge of an interior material such as a garnish disposed in the vehicle interior is covered to seal the gap.

A molded portion 17 having an overhang is provided at a corner portion 12a (a curved portion between the horizontal straight portion and the vertical straight portion) of the rubber extruded product 12 to be bent along the door opening edge. Are formed. In order to form the molded portion 17, first, at the corner portion 12a, an inner peripheral portion 14a which is an inner peripheral side and an outer peripheral portion 14b which is an outer peripheral side when the rubber extruded product 12 is curved are left. The seal portion 54 is cut off, for example, over a length of 50 to 100 mm. Then, the corner portion 12a of the rubber extruded product 12 is curved, and an unheated mold composed of a split mold, a core, and the like (this mold includes a cavity for forming the molded section 17 and a curved restoration preventing section) 23). A soft TPE material is injected into this mold to form a curved molded portion 17 that replaces the cut portion of the cut seal portion 14, and is connected to the inner peripheral portion 14 a of the seal portion 14 that has been left. Let it. At the same time, a belt-like bridge portion 22 is formed between the mounting portion 13 and the distal end of the angular outer peripheral edge of the projecting portion that protrudes outward from the outer peripheral contour line of the mounting portion 13 in the molded portion 17. Form. Each end of the bridge portion 22 is connected to the distal end side and the mounting portion 13, respectively.

The cross-sectional shape of the molded portion 17 substantially coincides with the outer peripheral portion 14b of the cut-out seal portion 14 at the end portion, but has a projecting portion at the center portion so as to conform to the corner shape of the door opening edge. The outer side is angular. On the back side of the angular portion, both sides of the bridge portion 22 are open apart from the mounting portion 13.

After the molding of the molding portion 17, the corner portion 12 is formed on the surface of the mounting portion 13 facing the back side of the lip portion 15.
The curved restoration preventing portion 23 extending in the circumferential direction of a is formed by injection molding of an olefin hard resin material such as PE (polyethylene) or PP (polypropylene).

Here, the bending restoration preventing portion 23 is attached to the mounting portion 13.
The area in which is formed is not particularly limited, but if the curved restoration preventing portion 23 is formed to have a width portion parallel to the side wall of the mounting portion 13, the restoration preventing effect of the curved corner portion 12a is large. For example, as shown in FIG.
May be provided on the inner surface of the U-shape. In this case, the effect of the width portion parallel to the side wall of the mounting portion 13 is large, and the effect of the width portion parallel to the connecting wall connecting the both side walls of the mounting portion 13 is small. In addition, as shown by a two-dot chain line in FIG. 4, a separately formed curved restoration preventing portion may be attached to the outer side surface that appears when the seal portion 14 is cut off.

According to the opening trim 11 configured as described above, since the curve restoration preventing portion 23 is provided, it is possible to restore the curved corner portion 12a to the straight shape by the restoring force of the curved insert 25 or the like. Can be prevented. Therefore, it is not necessary for the operator to manually re-curve when assembling to the vehicle as in the related art, and the work can be easily performed.

Since the curvature restoration preventing portion 23 is provided,
It is possible to prevent the deformation of the molded portion 17 due to the restoration of the corner portion 12a to a linear shape, and thus it is possible to improve the sealing property and appearance of the molded portion 17.

In addition, since a TPE material is used as the material of the molding portion 17 instead of a rubber material that requires heating for vulcanization, a general resin molding die that does not require heating for molding can be used. . Therefore, almost at the same time as the molding of the mold forming section 17, the curve restoration preventing section 23 made of hard resin can be injection-molded, and even if the curve restoration preventing section 23 is provided, the number of manufacturing steps does not need to be greatly increased.

Since an unheated mold can be used for molding the molded portion 17, the conventional problem that the surface of the cover layer 24 melts does not occur at all. Accordingly, the width of the inner peripheral portion 14a left by the seal portion 14 can be made as small as possible, so that the boundary 11a of the mold connection between the inner peripheral portion 14a and the mold forming portion 17 can be set at a position that is hardly seen from the outside, thereby improving the appearance. Can be done.

Further, since the bridge portion 22 is provided, the projecting portion of the molded portion 17 is supported by the bridge portion 22,
The opening and closing of the door panel 3 and the overturning and wobbling of the overhang due to aging can be suppressed, and the sealability and appearance can be improved.

Note that the present invention is not limited to the configuration of the above-described embodiment, and can be embodied by appropriately changing, for example, as follows, without departing from the spirit of the invention. (1) The above-described processing is performed on a corner portion of the opening trim different from that of the embodiment. (2) The present invention is applied to an opening trim mounted on an engine hood, a trunk or the like of an automobile. Then, the specific shapes of the mounting portion and the seal portion are changed according to the mounting location. (3) Changing the TPE coating of the cover layer to a cloth coating.

[0024]

As described above in detail, according to the opening trim according to the first aspect of the present invention, it is possible to prevent the return deformation of the curved portion at the corner portion and to improve the assembling property to the vehicle, the sealing property and the appearance. Can be improved.

In addition to the above effects, according to the opening trim according to the second aspect of the present invention, the opening and closing of the door panel and the overturning and wobbling of the projecting portion of the molded portion due to aging can be suppressed, and the sealing performance and appearance are further improved. Can be done.

[Brief description of the drawings]

FIG. 1 shows an opening trim according to a first embodiment of the present invention, and is a front view of a portion A in FIG.

FIG. 2 is a perspective view of the opening trim as viewed from the back.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a view similar to FIG. 3, showing a modification of the opening trim.

FIG. 5 is a side view of an automobile with an opening trim attached.

FIG. 6 is a front view of a conventional opening trim.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a view showing a state in which a curved corner portion of the opening trim is restored to a linear shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Flange 3 Door panel 11 Opening trim 12a Corner 13 Mounting part 14 Sealing part 17 Molding part 22 Bridge part 23 Curve restoration prevention part

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[Procedure amendment]

[Submission date] December 8, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

A molded portion 17 having an overhang is provided at a corner portion 12a (a curved portion between the horizontal straight portion and the vertical straight portion) of the rubber extruded product 12 to be bent along the door opening edge. Are formed. In order to form the molded portion 17, first, at the corner portion 12a, an inner peripheral portion 14a which is an inner peripheral side and an outer peripheral portion 14b which is an outer peripheral side when the rubber extruded product 12 is curved are left. The seal portion 14 is cut off, for example, over a length of 50 to 100 mm. Then, the corner portion 12a of the rubber extruded product 12 is curved, and an unheated mold composed of a split mold, a core, and the like (this mold includes a cavity for forming the molded section 17 and a curved restoration preventing section) 23). A soft TPE material is injected into this mold to form a curved molded portion 17 that replaces the cut portion of the cut seal portion 14, and is connected to the inner peripheral portion 14 a of the seal portion 14 that has been left. Let it. At the same time, a belt-like bridge portion 22 is formed between the mounting portion 13 and the distal end of the angular outer peripheral edge of the projecting portion that protrudes outward from the outer peripheral contour line of the mounting portion 13 in the molded portion 17. Form. Each end of the bridge portion 22 is connected to the distal end side and the mounting portion 13, respectively.

Claims (2)

[Claims] 1. A vehicle comprising: a mounting portion attached to an opening edge of a vehicle body; and a seal portion for sealing a gap between the opening and closing panel. The seal portion is cut off at a curved corner portion, and the cut portion is curved. In the opening trim in which the molded part is molded, the molded part is molded from a soft thermoplastic elastomer, and the bending restoration preventing part extending in the circumferential direction of the corner part is formed on the mounting part by injection molding of a hard resin material. An opening trim characterized by being formed. 2. The mold forming portion includes a projecting portion projecting to an outer peripheral side from an outer peripheral contour line of the mounting portion, and a strip-shaped connecting between an outer peripheral edge of the projecting portion and the mounting portion. The opening trim according to claim 1, further comprising a bridge portion.