CN2130709Y - 新型铅笔刀 - Google Patents

新型铅笔刀 Download PDF

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Publication number
CN2130709Y
CN2130709Y CN 92227409 CN92227409U CN2130709Y CN 2130709 Y CN2130709 Y CN 2130709Y CN 92227409 CN92227409 CN 92227409 CN 92227409 U CN92227409 U CN 92227409U CN 2130709 Y CN2130709 Y CN 2130709Y
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China
Prior art keywords
pencil
cutting
knife
sharpening
utility
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Expired - Fee Related
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CN 92227409
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English (en)
Inventor
吴洁
焦卫忠
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Individual
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Individual
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Priority to CN 92227409 priority Critical patent/CN2130709Y/zh
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Abstract

一种学生用铅笔刀,其特征是:在该刀的刀架上 设有倾斜的铅笔切削槽,在槽中间横向安装着专用切 削刀片。由于该刀的切削方向和铅笔的木纹方向一 致,故切削容易、不伤笔芯,削出的铅笔整齐一致。为 修整笔芯,该刀还设有笔芯切削槽及笔屑贮存装置。

Description

本实用新型是关于铅笔刀,特别是学生用铅笔刀的实用新型,属学习工具技术领域。它系将专用切削刀片固定在新型刀架上,刀架内有笔屑贮存装置。
为了削铅笔,至今仍采用铅笔旋或普通小刀。这是两种公知的铅笔切削工具,它们虽能削铅笔,但圆周方向切削的铅笔旋难以适应铅笔的纵向木纹,故切削困难,常损伤笔芯,且寿命短;而普通小刀使用不便,切削效果不好,并易割破手指。
本实用新型的任务是:提供一种新型铅笔刀,既能方便、合理的切削铅笔、修整笔芯,又牢固、安全、可靠。
其解决方案是:在铅笔的刀架上设有倾斜的铅笔切削槽,在槽中间横向安装着专用切削刀片,其刀刃逆着铅笔的切削方向。刀架内有笔屑贮存装置,从而实现新的组合。
这样在使用时,使铅笔在切削槽内顺着切削方向运动,便可达到切削目的。由于其切削方向和铅笔的木纹方向一致,故切削容易,不伤笔芯;又因为设有切削槽,使削好的铅笔不但整齐一致,而且使用起来安全、可靠。
本实用新型的改进是:为改善笔芯的切削效果,该铅笔刀还设有笔芯切削槽,用以修整笔芯。
附图描述了本实用新型的一个实例。
图1为新型铅笔刀立体图,它描述了本铅笔刀的外观形状及组合。
图2、3为新型铅笔刀俯视图、底视图,它们描述了切削刀片及底盘的布置方式。图中:1为铅笔切削槽、2为笔芯切削槽、3为铅笔切削刀片、4为笔芯切削刀片、5为上架固定螺钉、6为上架、7为可旋转卸下的圆形底盘,它用以清理内部贮存的笔屑等。
图4为C-C剖视图,它描述了铅笔刀的内部结构及切削刀片的安装方式。图中两个箭头分别表示铅笔及笔芯的切削方向。
图5为切削刀片安装放大图。由图中看出:铅笔切削刀片的切削角度大于笔芯切削刀片的切削角度,即α1〉α2
图6为切削刀片放大示意图。
本实用新型实现的最好方式是:铅笔刀外壳、上架、底盘可用ABS工程塑料在模具内压制成型,然后将切削刀片(用碳素工具钢制造,并经淬火处理)安装在刀孔内,最后用四个自攻螺钉固定好上架并旋上底盘即成。

Claims (2)

1、一种铅笔刀,它系将专用切削刀片固定在新型刀架上,刀架内有笔屑贮存装置,其特征是:在铅笔刀的刀架上设有倾斜的铅笔切削槽,在槽中间横向安装着专用切削刀片,其刀刃逆着铅笔的切削方向。
2、根据权利要求1所述的铅笔刀,其特征是:该铅笔刀还设有修整笔芯的笔芯切削槽。
CN 92227409 1992-07-14 1992-07-14 新型铅笔刀 Expired - Fee Related CN2130709Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92227409 CN2130709Y (zh) 1992-07-14 1992-07-14 新型铅笔刀

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92227409 CN2130709Y (zh) 1992-07-14 1992-07-14 新型铅笔刀

Publications (1)

Publication Number Publication Date
CN2130709Y true CN2130709Y (zh) 1993-04-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92227409 Expired - Fee Related CN2130709Y (zh) 1992-07-14 1992-07-14 新型铅笔刀

Country Status (1)

Country Link
CN (1) CN2130709Y (zh)

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