| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermal denaturation writing instrument enabled in stable friction operation by using a friction part at the rear end of a knocking body. <P>SOLUTION: A thermal denaturation ink is received in a writing instrument body 3, the writing instrument body 3 is movably received in a shaft cylinder 2 in the fore-and-aft direction, a knocking body 6 is formed at the rear end of the shaft cylinder 2, the friction part 61 is formed at the outer surface of the rear end of the knocking body 6; a lock lever 7 is movably arranged at the sidewall of the rear end of the shaft cylinder 2 in the radial direction; the lock lever 7 and the knocking body 6 are engaged with each other and the movement of the knocking body 6 in the fore-and-aft direction is prohibited in state that the other end of the lock lever 7 is protruded to the outside of the radial direction when pressing down one end of the lock lever 7 into the radial direction, and while one end of the lock lever 7 is pressed down in the radial direction, and on the other hand, while the other end of the lock lever 7 is pressed down in the radial direction, the engagement of the lock lever 7 and the knocking body 6 are released, thus enabling the movement of the knocking body 6 in the fore-and-aft direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
