| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that a user has uncomfortable feeling when writing since an axis of the writing instrument shaft main body and an axis of the writing core do not coincide, although the conventional writing instrument has already solved a problem of its writing cores bent and contacting with the adjacent cores by forming a securement hole along with the axial direction of the shaft main body and by guiding the writing cores throughout the entire length of the axial direction. SOLUTION: In a multi-writing core writing instrument containing a plurality of writing cores within a shaft main body where those writing cores are urged in the back by a spring member and then the respective writing core is pushed by the slide block attached behind the writing core and is projected individually forward through one projection hole formed in the shaft main body with the slide block being engaged to the shaft main body, a guiding part is installed inside and near the projection hole to surround each and individual writing core. COPYRIGHT: (C)2009,JPO&INPIT
|
