CN202169783U - 一种护书角 - Google Patents

一种护书角 Download PDF

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Publication number
CN202169783U
CN202169783U CN2011203133401U CN201120313340U CN202169783U CN 202169783 U CN202169783 U CN 202169783U CN 2011203133401 U CN2011203133401 U CN 2011203133401U CN 201120313340 U CN201120313340 U CN 201120313340U CN 202169783 U CN202169783 U CN 202169783U
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CN2011203133401U
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张晟廷
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Abstract

本实用新型的目的是提供一种护书角,用料更省,可用于对任何大小尺寸、不同厚薄的书本起到护角作用,使用起来特别方便。一种护书角,长直角边27和短直角边28将护角正面21和护角里面22连接在一起,所述的护角里面22的边缘曲线是一条四分之一椭圆,护角正面21的边缘曲线是椭圆短轴边缘内收弧线24和椭圆长轴边缘内收弧线23光滑过渡到内凹弧线25。使用时,对于任何大小尺寸、不同厚薄的书本,将其封面和封底的上、下角,分别从内凹弧线25处插入护角正面21与护角里面22之间缝隙里即可,每本书用量四个。

Description

一种护书角
技术领域
本实用新型涉及一种日常生活及学习用品,具体涉及一种护书角。
背景技术
书本最容易弄坏的地方是书角,无论是成人所使用的工具书还是学生使用的教科书,大小尺寸不一样,厚薄也相差甚远。市场上出售的硬质塑料书皮套,都只是针对某一具体书本规格的,难以满足任何大小、不同厚薄的书本保护要求,且用料较大。
发明内容
本实用新型的目的是提供一种护书角,用料更省,可用于对任何大小尺寸、不同厚薄的书本起到护角作用,使用起来特别方便。
本实用新型采用如下技术方案:一种护书角,长直角边27和短直角边28将护角正面21和护角里面22连接在一起,所述的护角里面22的边缘曲线是一条四分之一椭圆,护角正面21的边缘曲线是椭圆短轴边缘内收弧线24和椭圆长轴边缘内收弧线23光滑过渡到内凹弧线25。
使用时,对于任何大小尺寸、不同厚薄的书本,将其封面和封底的上、下角,分别从内凹弧线25处插入护角正面21与护角里面22之间缝隙里即可,每本书用量四个。
本实用新型有益效果是:采用内凹弧线25与椭圆短轴边缘内收弧线24和椭圆长轴边缘内收弧线23光滑过渡,护角正面21的面积小于护角里面22的面积,避免了护角正面21和护角里面22因同种材料相沾粘难分开的弊端,可轻松地将书角插入护角正面21与护角里面22之间,起到很好保护。而护角正面21与护角里面22的两直角边是相等尺寸平滑连接,美观大方。本实用新型构思新颖、使用便捷、结构简单、美观大方且可循环使用。
附图说明
图1是本实用新型在书本上应用的示意图;
图2是本实用新型的正面示意图;
图3是本图2的A侧视图。
具体实施方式
一种护书角,40毫米长的长直角边27和30毫米长的短直角边28将0.5毫米厚的护角正面21和0.5毫米厚的护角里面22连接在一起,护角里面22的边缘曲线是一条四分之一椭圆,护角正面21的边缘曲线是半径10毫米的椭圆短轴边缘内收弧线24和半径10毫米的椭圆长轴边缘内收弧线23光滑过渡到半径30毫米的内凹弧线25。
取四个护书角,对于任何大小尺寸、不同厚薄的书本,将内凹弧线25处对准书本1的封面和封底的上、下角,依次让封面和封底的上、下角从内凹弧线25处插入护角正面21与护角里面22之间缝隙里即可。

Claims (1)

1.一种护书角,长直角边(27)和短直角边(28)将护角正面(21)和护角里面(22)连接在一起,其特征是:所述的护角里面(22)的边缘曲线是一条四分之一椭圆,护角正面(21)的边缘曲线是椭圆短轴边缘内收弧线(24)和椭圆长轴边缘内收弧线(23)光滑过渡到内凹弧线(25)。
CN2011203133401U 2011-08-17 2011-08-17 一种护书角 Expired - Fee Related CN202169783U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203133401U CN202169783U (zh) 2011-08-17 2011-08-17 一种护书角

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203133401U CN202169783U (zh) 2011-08-17 2011-08-17 一种护书角

Publications (1)

Publication Number Publication Date
CN202169783U true CN202169783U (zh) 2012-03-21

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Family Applications (1)

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CN2011203133401U Expired - Fee Related CN202169783U (zh) 2011-08-17 2011-08-17 一种护书角

Country Status (1)

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CN (1) CN202169783U (zh)

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CN202169783U (zh) 一种护书角

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120321

Termination date: 20120817