| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a knocking type retractable ball-point pen with high-grade sensation, which does not have knocking malfunction arising due to bending of a refill and at the same time gives lively knocking feeling. <P>SOLUTION: In the knocking type retractable ball-point pen which contains in its shaft cylinder the refill movable in cross direction, includes a front spring in the shaft cylinder to bias the refill backward and also includes a knock spring to bias a knock member toward rear end side, and furthermore includes a knock mechanism which functions to project a ball point pen chip from the tip hole of the shaft cylinder by an impressing operation forward of a knock section projecting at the back end from the shaft cylinder rear end, the normal load relation between the front spring and the knock spring is to be (the front spring)≤(the knock spring). <P>COPYRIGHT: (C)2011,JPO&INPIT |
