CN85202589U - 粉笔笔壳 - Google Patents

粉笔笔壳 Download PDF

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Publication number
CN85202589U
CN85202589U CN 85202589 CN85202589U CN85202589U CN 85202589 U CN85202589 U CN 85202589U CN 85202589 CN85202589 CN 85202589 CN 85202589 U CN85202589 U CN 85202589U CN 85202589 U CN85202589 U CN 85202589U
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utility
model
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CN 85202589
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English (en)
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钟东
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Individual
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Individual
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Priority to CN 85202589 priority Critical patent/CN85202589U/zh
Publication of CN85202589U publication Critical patent/CN85202589U/zh
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Abstract

本实用新型提供了一种适用于粉笔的永久性笔壳。该笔壳内装置了放大了的活动铅笔夹持与递送铅芯的机构,外形为纺棰形。使用本实用新型比用手直接拿粉笔书写更卫生,使用更方便,并且,粉笔不易折断。

Description

本发明涉及一种适用于粉笔的永久性笔壳。
一种公知的使用粉笔的方式是,使用者手持粉笔书写。由于粉笔直接与手接触,因此手被粉笔弄脏。其次,随着粉笔在书写过程中逐渐变短,持笔便越来越吃力。
本发明的目的是要提供一种粉笔笔壳。由于本发明采用了放大了的公知的活动铅笔的铅芯夹持与递送机构,因此,只要往笔壳内放置等直径粉笔芯,便可方便地使用。
实施本发明的一种实例由附图给出。图1为主视图。芯管〔4〕下端沿轴向开有三道槽,在自然状态下,该部分沿径向张开。按下按钮〔1〕,按钮套〔2〕与芯管克服弹簧〔5〕的压力向下运动,芯管下端开槽部分张开,芯管内粉笔芯可凭重力下落。笔壳壳身分为上笔壳〔3〕与下笔壳〔6〕。笔头〔7〕内径稍大于粉笔芯直径,以稳定粉笔芯,防止其折断。按钮上限位块A与上笔壳顶端小槽错开时,可防止书写时掌心压下按钮。
笔壳外形可设计为使握持舒适的形状,如本实例给出的纺棰形。
本发明各部分可用塑料、金属等制作。

Claims (2)

1.一种适用于粉笔的笔壳。其特征在于:笔壳内装置了放大了的活动铅笔夹持与递送铅芯的机构。
2.根据权利要求1的笔壳,其特征在于:外形呈纺锤形。
CN 85202589 1985-06-24 1985-06-24 粉笔笔壳 Granted CN85202589U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 85202589 CN85202589U (zh) 1985-06-24 1985-06-24 粉笔笔壳

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 85202589 CN85202589U (zh) 1985-06-24 1985-06-24 粉笔笔壳

Publications (1)

Publication Number Publication Date
CN85202589U true CN85202589U (zh) 1986-07-16

Family

ID=4798363

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 85202589 Granted CN85202589U (zh) 1985-06-24 1985-06-24 粉笔笔壳

Country Status (1)

Country Link
CN (1) CN85202589U (zh)

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