Weather strip and production method thereof
First Claim
1. A weather strip comprising:
- an extrusion molded extrusion molded portion;
an injection molded portion which connects both ends of the extrusion molded portions in a straight line shape;
a mounting base portion which is mounted on a circumferential edge of an opening of a body or a circumferential edge of an opening/closing member for opening and closing the opening; and
a hollow sealing portion which protrudes from the mounting base portion, and is pressed against an opposite member when the opening/closing member for opening and closing the opening is closed,wherein the injection molded portion is formed such that a width thereof in a longitudinal direction of the weather strip is 0.5 mm or more and 3.0 mm or less,the hollow sealing portion is provided with a core withdrawing hole, through which a core mold member forming an inner peripheral surface of the hollow sealing portion is withdrawn after formation, andthe core withdrawing hole is formed such that a length thereof along a circumferential direction of the inner peripheral surface of the hollow sealing portion is 25% or more and 45% or less of a circumferential length of the inner peripheral surface in a region of the hollow sealing portion except for a sealing surface which is pressed against the opposite member.
1 Assignment
0 Petitions
Accused Products
Abstract
A weather strip includes an extrusion molded extrusion molded portion, an injection molded portion which connects both ends of the extrusion molded portions in a straight line shape, a trim portion which is mounted on a circumferential edge of an opening of a luggage compartment, and a hollow sealing portion which protrudes from the trim portion. The injection molded portion is formed such that a width thereof is 2.0. The hollow sealing portion is provided with a core withdrawing hole, through which a core mold forming an inner peripheral surface of the hollow sealing portion is withdrawn after formation. The core withdrawing hole is formed such that a length thereof along a circumferential direction of the inner peripheral surface of the hollow sealing portion is 40% of a circumferential length of the inner peripheral surface.
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Citations
14 Claims
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1. A weather strip comprising:
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an extrusion molded extrusion molded portion; an injection molded portion which connects both ends of the extrusion molded portions in a straight line shape; a mounting base portion which is mounted on a circumferential edge of an opening of a body or a circumferential edge of an opening/closing member for opening and closing the opening; and a hollow sealing portion which protrudes from the mounting base portion, and is pressed against an opposite member when the opening/closing member for opening and closing the opening is closed, wherein the injection molded portion is formed such that a width thereof in a longitudinal direction of the weather strip is 0.5 mm or more and 3.0 mm or less, the hollow sealing portion is provided with a core withdrawing hole, through which a core mold member forming an inner peripheral surface of the hollow sealing portion is withdrawn after formation, and the core withdrawing hole is formed such that a length thereof along a circumferential direction of the inner peripheral surface of the hollow sealing portion is 25% or more and 45% or less of a circumferential length of the inner peripheral surface in a region of the hollow sealing portion except for a sealing surface which is pressed against the opposite member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for producing a weather strip including
an extrusion molded extrusion molded portion; -
an injection molded portion which is formed by a molding device having a plurality of mold members and connects both ends of the extrusion molded portions in a straight line shape; a mounting base portion which is mounted on a circumferential edge of an opening of a body or a circumferential edge of an opening/closing member for opening and closing the opening; and a hollow sealing portion which protrudes from the mounting base portion, and is pressed against an opposite member when the opening/closing member for opening and closing the opening is closed, wherein in a core mold member having a core body for forming an inner peripheral surface of a hollow sealing portion of the injection molded portion, and a holding portion protruding from the core body, in a state in which both ends of the core body are inserted into a terminal of the hollow sealing portion of the extrusion molded portion when the injection molded portion is formed, the core mold member is positioned at a predetermined position of the molding device such that a connecting width of the injection molded portion in a longitudinal direction of the weather strip is 0.5 mm or more and 3.0 mm or less, the mold member is closed to form a cavity in the molding device, and the cavity is filled with a material of the injection molded portion to form the injection molded portion; the injection molded portion is provided with a core withdrawing hole, through which the core body is withdrawn by at least the holding portion after the core body is formed, such that a length thereof along a circumferential direction of the inner peripheral surface of the hollow sealing portion is 25% or more and 45% or less of a circumferential length of the inner peripheral surface in a region of the hollow sealing portion except for a sealing surface which is pressed against the opposite member; and after the injection molded portion is formed and the mold member of the molding device is opened, the core body is withdrawn from the core withdrawing hole. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification