| 摘要 |
PROBLEM TO BE SOLVED: To obtain a low manufacturing cost and ensure exact fabrication at the same time by reducing a space occupied by a small number of parts in successive numbering. SOLUTION: There is assembled a push rod (1) mechanically pushed by a projecting pin plate of an injection molding mold or another mechanical means in each injection process. The push rod (1) moves a link (4) secured to a central cylinder (5) in a linear direction. The link (4) rotates the central cylinder (5) within a wheel (3) having a marking number on the outer surface and an inner toothed wheel. A toothed comb (6) impressing pressure to the inner toothed wheel protrudes outward from the central cylinder (5) to change the position of the wheel (3) in the advancing direction of the central cylinder (5) and the display number. Further a magnet (7) coinciding with the outer surface of the wheel (3) helps the position of the comb (6) to be fixed, and this prevents rotation of the wheel (3) during retreat and slide of the central cylinder (5). COPYRIGHT: (C)2006,JPO&NCIPI
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