| 摘要 |
PURPOSE:To improve workability at the time of fitting of a grommet and to obtain entirely the same grommet as a conventional one from a functional point of view, by a method wherein a grommet to a longitudinal direction of which a torn slit part is provided is spread out at the torn slit part and after a bundle of wiring cords has been housed, torn slit surfaces are welded each other thermally. CONSTITUTION:A torn slit part 2 provided on a grommet 1 in its longitudinal direction is spread out manually. After a bundle 3 of wiring cords has been housed there, torn slit surfaces 4, 4' are welded each other thermally by making use of a hot plate. The grommet 1 into which the bundle of the wiring cords has been housed in this manner is fitted at a position to be fitted by making use of a groove part 5 in a peripheral direction of the grommet. The grommet 1 is formed of soft resin such as polyurethane of polyester or soft vinyl chloride or rubber. Formation of the torn slit part 2 is performed at the time of molding or after the molding. Those molding materials should be of thermoplastic, as they are welded thermally. As the grommet is used by being spreaded out at the torn slit part, an elastic material to the extent of about 60-98 degress (JIS A) as hardness is used generally.
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