| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a cap that easily enables a lead to be put in and out without being lost in a writing instrument that uses a ballpoint pen lead and a pencil lead. <P>SOLUTION: A slide type cap facilitates exposure and protection of the lead by exposing a point ballpoint pen lead 12 of the writing instrument and by inserting a main body sheath part 8 into the cap to represent a state of being ready for writing. A movable cap body 3 or an elastic grip 7 coating a cap body 6 is pushed by a finger, so that a rolling bearing 2 enters into a back hollow 5c after it comes out from a front hollow 5a, pushes up a convex part 5b and slides. <P>COPYRIGHT: (C)2003,JPO |
