JP2008265635A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fit a molded part 2 without causing wrinkles and waving on a rear surface lip 6 even if it is used at a corner with an angle smaller than a reference angle in a weather strip for an automobile having an extruded part 1 connected thereto at the reference angle and having the molded part 2 fitted to the corner of a door. <P>SOLUTION: One or more blocks 21 of the same material as the molded part 2 are stuck to the rear surface lip 6 at portions where wrinkles and waving occur when the molded part 2 is fitted to the corner with an angle smaller than the reference angle for increasing the rigidities of these portions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a weather strip for automobiles, and more particularly, to a weather strip having a molding portion that is mounted on a corner portion of a door opening edge of a door or body.

  FIG. 1 shows an overall structure of a weather strip that is mounted around a door of an automobile, and includes an extruded portion 1 and a mold portion 2 that is mounted at a corner portion of the door and connects the extruded portion 1. Yes. FIG. 2 shows the details of part a of FIG. 1, FIG. 3 shows a cross section taken along line AA of the mold part 2 shown in FIG. 2, and the mold part 2 is the same as the extrusion part 1 A base 4 attached to the door sash 3, a hollow seal 5 protruding from the base 4 and elastically contacting the door opening edge of the body when the door is closed, and protruding sideways from the base 4 It consists of a back lip 6 that comes into elastic contact with the outer peripheral edge 3a. In addition, the triangle mark shown in FIG. 2 has shown the mold forming part in the side of the black-painted part, and the extrusion molding part in the side of the non-painted part. The same applies to the following drawings.

FIG. 4 shows a mold forming portion of this type of weatherstrip disclosed in Patent Document 1, and a base portion 11 attached to a door sash and a hollow seal portion 12 that comes into contact with a door opening edge of the body when the door is closed. And a first lip 13 and a second lip 14 that elastically contacts the outer peripheral protruding edge of the door sash. The first lip 13 is provided with a plurality of flow path conversion ribs 15 in parallel. Rain water that has flowed in through the gaps between the two parts is applied to the ribs 5 to weaken the momentum so that running marks are not generated on the body panel.
JP 2006-151205 A

  In recent years, weather strips have also been diverted to different vehicle types in order to enable mass production of small varieties from the viewpoint of cost reduction. Although the same extrusion cross section is used, the molded part may have a different angle θ shown in FIG. 2 depending on the design of the vehicle. From the corner of the door sash with a different angle θ, for example, the angle θ shown in FIG. 2 is attached to the corner of the small door sash at a narrow angle, the back lip 6 may be wrinkled or wavy due to the difference in the circumferential length of the back lip 6, thereby causing the door sash 3 A gap is generated between the outer peripheral projecting edge 3a and the outer appearance and the sealing performance is impaired. For this reason, it cannot be used as a weather strip to be mounted on a corner of a door sash smaller than an angle θ. I had to set a new one.

  These problems are not limited to the weatherstrip mold part that is mounted on the corner of the door sash, but the opening trim weatherstrip mold part that is mounted on the corner of the door opening edge on the body side, that is, as shown in FIG. Further, a trim portion 33 having a substantially U-shaped cross section that is inserted into a flange at a door opening edge of the body, a hollow seal portion 34 that is formed to project from one side of the trim portion 33, and a trim portion Also, in the molded part 31 provided with a design lip 36 that protrudes to the other side of 33 and covers the interior material 35, when the angle of the molded part 31 is narrowed and attached, the design lip 36 is wrinkled or wavy. Or similar problems occur such as a gap between the interior material 35 and the interior material 35.

  The present invention includes a mold forming portion having a reference angle θ as shown in FIG. 2, for example, and the mold forming portion is also applied to a door sash having an angle smaller than the reference angle θ or a corner of the door opening edge of the body as described above. It is an object of the present invention to provide an automobile weather strip that can be used without causing any problems.

  The invention according to claim 1 comprises an extrusion molding portion and a mold molding portion that connects the extrusion molding portion at a reference angle θ and is attached to a corner of a door sash, and the base portion that is attached to the door sash. And a hollow seal portion that is integrally formed with the base and elastically contacts the door opening edge of the body when the door is closed, and a rear lip that protrudes laterally from the base and elastically contacts the outer peripheral edge of the door sash. In a weather strip for automobiles, when the molded part is attached to the corner of the door sash having an angle smaller than the reference angle θ, the back lip has a rigidity of a portion where wrinkles or undulations are generated or predicted to occur. In order to enhance, one or more blocks are bonded or welded to the location.

  The invention according to claim 2 comprises an extrusion molding part and a molding part that connects the extrusion molding part at a reference angle θ and is mounted on a corner of a door opening edge of the body, and the molding part is the door. An automotive weatherstrip having a trim portion having a substantially U-shaped cross-section that is inserted into a flange at an opening edge portion, and a design lip that projects from a side of the trim portion and covers an end portion of an interior material. In order to increase the rigidity of the lip where the mold forming portion is attached to the corner of the door opening edge portion having an angle smaller than the reference angle θ, the wrinkles or undulations are expected or the occurrence is predicted. It is characterized in that a plurality of blocks are bonded or welded.

  The block of each of the above inventions is made of, for example, EPDM rubber or thermoplastic elastomer, and may be formed of a material different from that of the molded part, or may be formed of the same material.

  Another invention relates to a method of attaching each weather strip described above, and when attaching to a corner of a door sash or a corner of a door opening of a body, a back surface of a portion where wrinkles or undulations are expected or are expected to occur. One or more blocks are bonded or welded to the lip or the design lip to increase the rigidity of the portion.

  According to the present invention, when mounted on a door sash having a smaller angle than the reference angle θ or a corner of the door opening edge, wrinkles and undulations occur on the back lip or the design lip where it is predicted to occur. The block is bonded or welded to increase the rigidity of the part, thereby suppressing the occurrence of wrinkles and undulations and preventing the appearance of the door sash from being damaged due to the gap between the outer edge of the door sash or the interior material. Therefore, simply by attaching the block to the required part of the back lip or design lip, the weather strip with the molded part of the reference angle θ can be used as a weather strip to be attached to a corner having an angle smaller than the reference angle θ. can do.

  A weather strip according to an embodiment of the present invention will be described below with reference to the drawings. In the figure, the same components as those of the conventional weather strip shown in FIGS.

  FIG. 5 shows the molding part 2 for connecting the extrusion molding part 1 mounted on the corner of the door sash. FIG. 6 shows a cross section taken along the line BB of FIG. A block 21 made of the same material as that of the mold part 2 or a different material at a place where wrinkles or undulations are expected to occur when the door sash is mounted at a corner angle smaller than the reference angle θ. For example, when the molded part 2 is made of EPDM rubber, two blocks 21 made of EPDM rubber or thermoplastic elastomer of the same material are attached to the back lip 6 and the base part 4 and attached to increase the rigidity of the above part. Thus, wrinkles and undulations are prevented from occurring at the location. In FIG. 5, 22 is a lip that contacts the door opening edge of the body when the door is closed, like the first lip 13 shown in FIG. In the illustrated embodiment, the block 21 is provided only on the back lip 6 on the vertical side, but it may be attached to a suitable place such as the back lip 6 on the horizontal side or the back lip 6 on the center of the corner.

  FIG. 7 shows a molded part 31 that is attached to the corner of the door opening edge of the body and connects the extruded part, and has a substantially U-shaped cross section formed by being inserted into the flange 32 of the door opening edge part. The mold includes a trim part 33, a hollow seal part 34 formed to project on one side of the trim part 33, and a design lip 36 that projects to the other side of the trim part 33 and covers the end of the interior material 35. When the molded part 31 is attached to the corner of the door opening edge with a smaller angle than the reference angle, the block 37 is placed on the design lip 36 and the trim part 33 at a place where wrinkles or undulations are expected to occur. It is attached and bonded to increase the rigidity of the above part.

  The invention applies to weatherstrips that are mounted around the door and weatherstrips that are mounted to the door opening edge of the body.

The figure which shows the whole structure of the weather strip attached around a door. FIG. 2 is a detailed view of a conventional example of part a shown in FIG. 1. FIG. 3 is a sectional view taken along line AA in FIG. 2. The perspective view of the principal part of the weather strip which is another conventional example. The perspective view of the principal part of the weather strip which concerns on this invention. Sectional drawing in the BB line of FIG. Sectional drawing of another example of the weather strip which concerns on this invention.

Explanation of symbols

1 .. Extrusion molding part 2, 31 .. Molding part 3.. Door sash 4.. Base 5.. Hollow seal part 6 .. Back lip 21, 37... Block 22. 33. Trim 34. Hollow seal 35. Interior material 36. Design lip

Claims (2)

  An extrusion molding part 1 and a molding part 2 which is connected to the corner of the door sash 3 by connecting the extrusion molding part 1 at a reference angle θ, and the base part 4 to which the molding part 2 is attached to the door sash 3; A hollow seal portion 5 that is integrally formed with the base portion 4 and elastically contacts the door opening edge of the body when the door is closed, and is formed so as to protrude laterally from the base portion 4 and is elastically projected to the outer peripheral edge 3a of the door sash 3. In an automotive weather strip having a back lip 6 in contact therewith, wrinkles and undulations occur or occur when the molded part 2 is attached to the corner of the door sash 3 having an angle smaller than the reference angle θ. A weather strip for automobiles, wherein one or a plurality of blocks 21 are bonded or welded to the location in order to increase the rigidity of the location where the expected value is predicted.   The extrusion molding portion is connected to the extrusion molding portion at a reference angle θ, and includes a mold molding portion 31 that is attached to a corner of the door opening edge of the body, and the molding portion 31 is a flange 32 of the door opening edge portion. In the automobile weather strip having a trim portion 33 having a substantially U-shaped cross-section to be inserted and attached, and a design lip 36 that protrudes to the side of the trim portion 33 and covers an end portion of the interior material 35, the design lip 36, when the mold forming portion 31 is attached to the corner of the door opening edge portion having an angle smaller than the reference angle θ, in order to increase the rigidity of the portion where wrinkles or undulations are expected or are expected to occur, A weather strip for automobiles, wherein one or a plurality of blocks 37 are bonded or welded to each other.

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