WRITING IMPLEMENT

摘要

Provided are: a writing implement in which a joint connecting an ink supply section and a ballpoint pen tip together is configured from three members. The three members configuring the joint are a substantially cylindrical center member, a substantially cylindrical surrounding member formed at the outer periphery of the center member, and an interposing member that is molded by a soft member molded so as to cover the outer periphery of the center member and the surrounding member. An annular gap section is provided between the center member and the surrounding member. The leading end of the ink supply section is fitted into the gap section. The joint is formed by two color molding. The center member and the surrounding member are molded by primary molding, and the interposing member is integrally molded onto the center member and the surrounding member by secondary molding.

主权项

1. A writing implement comprising:
a writing tip; an ink supply section that supplies ink to the writing tip; a joint that connects the writing tip and the ink supply section together; and a shaft that internally houses the writing tip, the ink supply section, and the joint, the joint including:
a center member that is connected to at least the writing tip,a surrounding member that is separated from the center member, andan interposing member that is formed so as to connect the center member and the surrounding member together, and the interposing member being made of a different material from that of the center member and the surrounding member.