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    • 47. 发明授权
    • Mechanical pencil
    • 自动铅笔
    • US07128487B2
    • 2006-10-31
    • US10489570
    • 2002-09-24
    • Shigeki MaruyamaMasaki ShigemoriHidetoshi Kodama
    • Shigeki MaruyamaMasaki ShigemoriHidetoshi Kodama
    • B43K21/22
    • B43K29/02B43K21/00B43K21/16B43K21/22
    • In a mechanical pencil, the dispersion range of the diameter of a lead is allowable to a certain extent, but if by chance a lead having the maximum diameter is used the lead may not be delivered. This is because there is exceeded the allowable range of the elastic deformation of an elastic thin film, namely, a lead holding member. The mechanical pencil includes the lead holding member disposed in the neighborhood of the tip of a shaft tube, in which the exterior shape of the lead holding member is formed to be slightly smaller than the interior shape of the shaft tube in which the lead holding member is disposed, and an inner step portion for preventing the dropping of the lead holding member from the shaft tube is disposed in the front portion of the lead holding member.
    • 在自动铅笔中,铅的直径的分散范围可以在一定程度上允许,但是如果偶然使用具有最大直径的引线,则引线可能不被输送。 这是因为超过弹性薄膜,即引线保持构件的弹性变形的允许范围。 该自动铅笔包括设置在轴管的顶端附近的引线保持构件,其中引线保持构件的外形形成为比轴管的内部形状略小,其中引线保持构件 并且在引线保持部件的前部设置有用于防止引线保持部件从轴管掉落的内部台阶部。