| 摘要 |
PURPOSE:To prevent the mounting failure of a pad from occurring, improve the operability and decorativeness and at the same time improve the formability for covering core materials by a method wherein the so-called marked-off portion of each spoke part is covered with a precisely molded synthetic resin cover. CONSTITUTION:In a first process, a steering wheel core material 10 is formed by laminatedly taking up a resin-impregnated continuous long fiber with a reeling jig 1. In a second process, the uncured core material is mounted on a marked-off part forming jig 15. The jigs 15 are positioned and fixed so as to precisely form so-called marked-off parts or portions, each of which corresponds to the peripheral edge part of a pad to be attached on a steering wheel in the form of a finished product and is covered with urethane, of spoke parts. Then, the core materials are cured. After the complete curing of the core materials, the marked-off part forming jigs are removed. In a third process, for example, molding tools for covering urethane are installed onto the molded steering wheel core materials so as to pour urethane stock liquid in the tools in order to form urethane coverings onto the cured core materials. At this time, the leakage of the urethane stock liquid is suppressed and consequently urethane-covered marked-off parts having both accurate dimensions and precise shapes are molded. |
