MECHANICAL PENCIL

To provide a mechanical pencil with a holding chuck that prevents the occurrence of improper installation.SOLUTION: The mechanical pencil includes a barrel 2, and a holding chuck 10 arranged inside the tip end of the barrel 2 and capable of holding a writing core 4. The holding chuck 10 has a fittin...

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Bibliographic Details
Main Authors KIRITAKE MASAYOSHI, NAGAOKA KENGO, KONDO YASUAKI
Format Patent
LanguageEnglish
Japanese
Published 04.11.2021
Subjects
BUREAU ACCESSORIES
IMPLEMENTS FOR WRITING OR DRAWING
PERFORMING OPERATIONS
TRANSPORTING
WRITING OR DRAWING IMPLEMENTS
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Summary:To provide a mechanical pencil with a holding chuck that prevents the occurrence of improper installation.SOLUTION: The mechanical pencil includes a barrel 2, and a holding chuck 10 arranged inside the tip end of the barrel 2 and capable of holding a writing core 4. The holding chuck 10 has a fitting portion 11 that fits with a fitting surface 3a provided on the inner surface of the barrel 2 and a concave relief portion 13 provided on the outer surface of the fitting portion 11. A relief portion 13 is provided along the circumferential direction. Further, the relief portion 13 is provided over the entire circumference.SELECTED DRAWING: Figure 2 【課題】取り付け不良の発生を防止した保持チャックを備えたシャープペンシルを提供する。【解決手段】シャープペンシルが、軸筒２と、軸筒２の先端内部に配置され、筆記芯４を保持可能な保持チャック１０と、を具備し、保持チャック１０が、軸筒２の内面に設けられた嵌合面３ａと嵌合する嵌合部１１と、嵌合部１１の外面に設けられた凹状の逃げ部１３と、を有する。逃げ部１３が周方向に沿って設けられている。また、逃げ部１３が全周に亘り設けられている。【選択図】図２
Bibliography:Application Number: JP20200081379