| 摘要 |
PURPOSE: To use each cartridge as building blocks of a toy by detachably inserting and holding other cartridge cylindrical protrusion into an insertion hole provided at a cylindrical body of the cartridge, incorporating a core member of the other cartridge in the hole, and detachably coupling a plurality of the cartridges longitudinally thereby performing a function of a writing instrument body without using its outer periphery. CONSTITUTION: A cartridge 2 detachably inserts a core holder 12 of a core member 6 into an insertion hole 5 of a cylindrical protrusion, and a base side end of the holder 12 is brought into contact with a stopper 10. The protrusion 3 of the lower cartridge 2 of the same constitution is detachably inserted into the insertion hole 9 of the body 4 of the upper cartridge 2. And, the holders 12, 13 of the lower cartridge 2 are contained at the base side halves of the holder 12 and the hole 9 of the upper cartridge 2. A lower end of the body 4 of the upper cartridge 2 is brought into contact with a step 4a of the body 4 of the lower cartridge 2, and the cartridges 2, 2 are positioned longitudinally. |
