A pencil clamping mechanism and a pencil sharpener

CN224689879UActive Publication Date: 2026-08-28DELI GROUP CO LTD
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Patent Information

Application Number
CN202522010076.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-18
Publication Date
2026-08-28
Estimated Expiration
2035-09-18

AI Technical Summary

Technical Problem

但是，该夹笔机构主要依靠弹簧来提供夹紧力，而弹簧的弹性范围是有限的如果弹簧的弹性系数设置得较高，虽然可以较好地夹紧小笔，但插入大笔时需要克服较大的弹簧阻力，这对于儿童来说使用体验不佳，相反，如果弹簧的弹性系数设置得较低，虽然插入大笔时较为轻松，但对于小笔的夹紧力则不足，容易导致小笔在削笔过程中打转，影响削笔效果

Benefits of technology

[0015]本申请还提供一种削笔机，包括前述的任一一种夹笔机构。本技术方案中，通过设置可切换的第一定位槽和第二定位槽，滚轴在不同的笔径下可切换连接不同的定位槽，笔的插入力直接作用于滚轴，推动滚轴在定位槽之间切换，夹持口的尺寸能够根据插入笔的直径自动调整，提高了夹笔机构的通用性和灵活性，在切换过程中，滚轴的移动方向与笔的插入方向一致，减少了机械部件之间的摩擦和阻力，减少了在切换过程中可能产生的反向力或侧向力，提高使用省力性和用户体验。

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Abstract

The application discloses a pencil clamping mechanism and a pencil sharpener. The pencil clamping mechanism comprises at least two roller assemblies, each of which comprises a roller shaft and a roller rotatably installed on the roller shaft. A clamping opening is formed between the at least two roller assemblies for a pencil to pass through. The pencil clamping mechanism further comprises a mounting bracket for mounting the roller assemblies. The mounting bracket is provided with a first positioning portion and a second positioning portion. One end of the roller shaft is rotatably installed on the first positioning portion, and the other end of the roller shaft is rotatably installed on the second positioning portion. The first positioning portion is provided with a first positioning groove and a second positioning groove which are communicated. The roller shaft is switchably connected to the first positioning groove or the second positioning groove under stress. When the roller shaft is connected to the first positioning groove, the size of the clamping opening is smaller than that when the roller shaft is connected to the second positioning groove.
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Citation Information

Patent Citations

  • Pen clamping mechanism for large and small pens

    CN222080439U