Title:
シャープペンシルユニット及び出没式筆記具並びにシャープペンシルユニットの製造方法
Document Type and Number:
Japanese Patent JP7261034
Kind Code:
B2
Abstract:
To improve the workability of connecting a plurality of cylinders in which the elastic biasing member is incorporated.SOLUTION: There is provided a mechanical pencil unit including a male-side cylinder portion, a female-side cylinder portion that is annularly fitted to one end side of the male-side cylinder portion in the expanded state, and a lead core feeding mechanism M1 for feeding out these two cylinder portions in an axial direction by a biasing member. The male-side cylinder portion has a fitting outer peripheral surface portion 12a fitted to the inner peripheral surface of the female-side cylinder portion, and an annular inclined surface 12b that is continuous with the fitting outer peripheral surface portion 12a and whose diameter is gradually reduced toward the one end side. The female-side cylinder portion is set such that the inner diameter before the diameter expansion is temporarily fitted to the annular inclined surface 12b.SELECTED DRAWING: Figure 3
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Inventors:
Yukihiro Tsukioka
Application Number:
JP2019024604A
Publication Date:
April 19, 2023
Filing Date:
February 14, 2019
Export Citation:
Assignee:
Zebra Co., Ltd.
International Classes:
B43K21/24; B43K24/18
Domestic Patent References:
| JP2015042449A | ||||
| JP2018176742A | ||||
| JP2013215935A |
Attorney, Agent or Firm:
Patent Attorney Corporation Wisdom International Patent and Trademark Office
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