| 摘要 |
PROBLEM TO BE SOLVED: To eliminate such a malfunction that delivery of refills may be hindered due the interference of the refills and a coil spring caused by an effect that the coil spring is sandwiched between a portion and external peripheral surfaces of the refills which have moved in an axial center direction while forming the portion for holding the external periphery of the coil spring at a guide member of the refills, in a multifunction pen.SOLUTION: A ballpoint pen insertion hole 28 into which the ballpoint pen refills 50 are inserted, and a ballpoint pen spring receiver 26 located at the rear of the insertion hole, larger in diameter than the ballpoint pen insertion hole 28 and receiving a spring 61 of a ballpoint pen knock rod 60 are formed at a guide spacer 20 in a barrel 10, and a curvature radius of a cross section of an inside wall at the side of an axial center in the rear of the ballpoint pen spring receiver 26 is larger than a curvature radius of a cross section of an inside wall at the side of the axial center in the front of the ballpoint pen spring receiver 26. |
