Weather strip and method of manufacturing the same
First Claim
1. A method of manufacturing a weather strip including (a) a trim body having a generally U-shaped cross section, the trim body being adapted to be held by a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body, the method comprising the step of:
- forming the weather strip by extrusion molding such that a length of the holding lip is changed in a plurality of steps in accordance with a thickness of the flange.
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Accused Products
Abstract
A weather strip includes a trim body having a generally U-shaped cross section, a hollow seal portion that protrudes from an outside surface of the trim body, and a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body. The weather strip is mounted on the vehicle body such that the trim body is held by a flange provided at a periphery of a door opening of a motor vehicle. The weather strip is formed by extrusion molding such that the length of the holding lip is changed in a plurality of steps in accordance with the thickness of the flange.
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Citations
38 Claims
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1. A method of manufacturing a weather strip including (a) a trim body having a generally U-shaped cross section, the trim body being adapted to be held by a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body, the method comprising the step of:
forming the weather strip by extrusion molding such that a length of the holding lip is changed in a plurality of steps in accordance with a thickness of the flange. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of manufacturing a weather strip including (a) a trim body having a generally U-shaped cross section and including an inner sidewall that faces an inside of the vehicle, an outer sidewall that faces an outside of the vehicle, and a connecting portion that connects the inner and outer sidewalls, the trim body being adapted to be held by a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a plurality of holding lips formed on the trim body so as to extend from inside surfaces of the inner sidewall and the outer sidewall toward the inside of the trim body, the method comprising the step of:
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classifying a thickness of the flange, which varies in a longitudinal direction of the weather strip, into a plurality of thickness levels each corresponding to a predetermined thickness range, and dividing the flange into a plurality of sections arranged in the longitudinal direction, based on the thickness levels; and
forming the weather strip by extrusion molding such that at least one of the holding lips that extend from one of the inner and outer sidewalls has a constant length, and at least one of the holding lips that extend from the other of the inner and outer sidewalls has a variable length, which is changed in the plurality of steps with respect to the plurality of sections of the flange. - View Dependent Claims (8, 9, 10)
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11. A method of manufacturing a weather strip including (a) a trim body having a generally U-shaped cross section, the trim body being adapted to be held by a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body, the method comprising the step of:
forming the weather strip by extrusion molding such that a first length of the holding lip corresponding to at least a large-thickness section of the flange having a large thickness is made smaller than a second length of the holding lip corresponding to a small-thickness section of the flange having a small thickness, and such that a section of the weather strip in which the holding lip has the first length is made longer by a predetermined length than the large-thickness section of the flange as viewed in the longitudinal direction of the weather strip. - View Dependent Claims (12)
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13. A method of manufacturing a weather strip including (a) a trim body having a generally U-shaped cross section, the trim body being adapted to be held by a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body, the method comprising the step of:
forming the weather strip by extrusion molding such that a length of the holding lip is changed along a longitudinal direction of the weather strip in accordance with a thickness of the flange so that the length of the holding lip decreases with an increase in the thickness of the flange, and such that the holding lip includes longitudinally opposite end portions having substantially the same length. - View Dependent Claims (14)
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15-28. -28. (canceled)
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29. A structure comprising:
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a weather strip including (a) a trim body having a generally U-shaped cross section, the trim body being adapted to be fitted on a first predetermined portion of a flange provided at a periphery of an opening formed in a motor vehicle, (b) a hollow seal portion that protrudes from an outside surface of the trim body, the seal portion being adapted to come in contact with a closure member that closes the opening, and (c) a holding lip formed on the trim body so as to extend from an inside surface of the trim body toward the inside of the trim body; and
a covering member that is mounted on the vehicle so as to cover a second predetermined portion of the flange other than the first predetermined portion, and longitudinally opposite end portions of the weather strip, wherein a length of the holding lip is changed along a longitudinal direction of the weather strip in accordance with a thickness of the flange so that the length of the holding lip decreases with an increase in the thickness of the flange, and wherein the holding lip includes longitudinally opposite end portions having substantially the same length, which is determined based on the larger one of thickness values corresponding portions of the flange. - View Dependent Claims (30, 31, 32)
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33. A method of manufacturing a weather strip, comprising the steps of:
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providing an insert with a plurality of marks that are spaced at regular intervals of a predetermined length;
continuously extruding a covering material together with the insert provided with the marks, so as to provide an elongated work having a predetermined cross-sectional shape; and
cutting the work at predetermined positions after the extrusion step, based on detection of a detector capable of detecting the marks through the covering material. - View Dependent Claims (34, 35, 36, 37, 38)
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Specification