CN2145706Y - 粉笔外套笔 - Google Patents

粉笔外套笔 Download PDF

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Publication number
CN2145706Y
CN2145706Y CN 92222716 CN92222716U CN2145706Y CN 2145706 Y CN2145706 Y CN 2145706Y CN 92222716 CN92222716 CN 92222716 CN 92222716 U CN92222716 U CN 92222716U CN 2145706 Y CN2145706 Y CN 2145706Y
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China
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chalk
pen
container
pen core
function
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Expired - Fee Related
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CN 92222716
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English (en)
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彭彦林
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Individual
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Individual
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Priority to CN 92222716 priority Critical patent/CN2145706Y/zh
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Abstract

粉笔外套笔是一种教学辅助用具,总长度在75 毫米左右,由笔筒和笔芯两大主件构成。笔筒前端开 凹形缺口,上套内齿形防缩圈,嵌固定圈,与笔芯前端 的卡片构成弹性卡制系统,有卡制粉笔、使粉笔外伸 的功用。后端安弹簧,外置挂钩。笔芯后部外壁制螺 丝、配螺母、筒盖,有利于装配,形成制动系统,有放置 粉笔、回收笔芯的功能。

Description

本实用新型是一种教学辅助用具。在设计制作该笔之前,未曾发现过相应的教学辅助用具。教师多为摸粉笔、沾粉沫所困,而且存在粉笔蒂头的浪费现象。
为改善教师的工作环境,保持清洁,提高粉笔利用率,便于携带,而设计制作此粉笔外套笔。下面依图予以说明:图1为笔筒示意图,图2为笔芯示意图,图3为整体图。
本实用新型的总长度在75毫米左右,由笔筒和笔芯两大主件构成。笔筒前端开凹形缺口(1),上套内齿形防缩圈(2),嵌固定圈(3),与笔芯前端的卡片构成弹性卡制系统,有卡制粉笔,使粉笔外伸的功用。后端安弹簧(4),能使笔芯伸缩回收。外置挂钩(5),以备悬挂收藏之用。套装于笔筒内的笔芯主体成空筒(6),后部外壁制成螺丝(7)、配螺母(8)、筒盖(9),前部制成卡片(10),有利于装配,形成制动系统,具有放置粉笔,回收笔芯的功能。
本实用新型的各个部件可依图用塑料、金属、橡胶等材料制作。工艺简单,制作便利,易于装配。
使用本实用新型可收到提高粉笔利用率、洁身、便于携带的功用,在教学中有广泛的应用前景。

Claims (1)

  1. 一种实用新型的粉笔外套笔,总长度在75毫米左右,其特征在于所述的粉笔外套笔由笔筒、笔芯两大主件构成;笔筒前端开有凹形缺口(1),外套内齿形防缩圈(2),嵌固定圈(3),与笔芯前端的卡片构成弹性卡制系统,有卡制粉笔、使粉笔外伸的功用;笔筒后端安弹簧(4),具拉收笔芯的功用,外配挂钩(5);套在笔筒内的笔芯主体成空筒(6),后部外壁制螺丝(7)、配螺母(8)、筒盖(9),有利于装配,形成制动系统,具有放置粉笔、回收笔芯的功能;笔芯前部制成卡片(10),具有卡制粉笔的功用。
CN 92222716 1992-05-22 1992-05-22 粉笔外套笔 Expired - Fee Related CN2145706Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92222716 CN2145706Y (zh) 1992-05-22 1992-05-22 粉笔外套笔

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92222716 CN2145706Y (zh) 1992-05-22 1992-05-22 粉笔外套笔

Publications (1)

Publication Number Publication Date
CN2145706Y true CN2145706Y (zh) 1993-11-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 92222716 Expired - Fee Related CN2145706Y (zh) 1992-05-22 1992-05-22 粉笔外套笔

Country Status (1)

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CN (1) CN2145706Y (zh)

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