| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a barrel body for a writing utensil with a structure hardly dropping out and rotating a ring member to a barrel member, and hardly causing a fracture of the barrel member mde of a lumber. <P>SOLUTION: The barrel body for the writing utensil with a structure inserting the ring member into the opening of the barrel member made of lumber comprises forming an exposure part exposed from an insertion part inserted into the opening of the barrel member and the opening of the barrel member on the ring member, forming at least two corresponding flexible walls elastically deformable in the center direction of the insertion part on the insertion part of the ring member by intervening a fixed wall between them, and disposing the flexible wall formed on the insertion part of the ring member on the inner face in a direction of larger deformation with a change in humidity at the opening of the barrel member with the insertion part of the ring member inserted into the opening of the barrel member. <P>COPYRIGHT: (C)2009,JPO&INPIT |
