CN201979864U - 防止笔芯液外溢的中性笔芯 - Google Patents

防止笔芯液外溢的中性笔芯 Download PDF

Info

Publication number
CN201979864U
CN201979864U CN2011200205465U CN201120020546U CN201979864U CN 201979864 U CN201979864 U CN 201979864U CN 2011200205465 U CN2011200205465 U CN 2011200205465U CN 201120020546 U CN201120020546 U CN 201120020546U CN 201979864 U CN201979864 U CN 201979864U
Authority
CN
China
Prior art keywords
pen refill
pen
point
ball
gel ink
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011200205465U
Other languages
English (en)
Inventor
张刚
周儒杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanchang Hangkong University
Original Assignee
Nanchang Hangkong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanchang Hangkong University filed Critical Nanchang Hangkong University
Priority to CN2011200205465U priority Critical patent/CN201979864U/zh
Application granted granted Critical
Publication of CN201979864U publication Critical patent/CN201979864U/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Pens And Brushes (AREA)

Abstract

一种防止笔芯液外溢的中性笔芯,中性笔芯的笔筒形状为上端口径小下端口径大的圆锥状。本实用新型的技术效果是:结构简单,能够阻止笔芯液从笔芯尾端流出,解决了书写时时断时续的问题,使书写更加流畅润滑。

Description

防止笔芯液外溢的中性笔芯
技术领域
本实用新型涉及一种中性笔芯,尤其涉及一种防止笔芯液外溢的中性笔芯。
背景技术
市场上的普通笔芯都是圆柱状,消费者在使用期间由于习惯性转笔,在离心力作用下,笔墨会向尾端流动,尽管流动幅度有限,但是足以在笔头处产生微小的空气间隙,造成书写时断时续。消费者由于不慎,将笔芯倒置,由于本身的重力作用,笔墨也会向尾端流动,时间稍长就会流出,弄脏消费者的衣服或笔袋。
发明内容
本实用新型的目的在于提供了一种防止笔芯液外溢的中性笔芯,该笔芯解决了普通笔芯的笔芯液外溢的问题。
本实用新型是这样来实现的,它包括中性笔芯,其特征是中性笔芯的笔筒形状为上端口径小下端口径大的圆锥状。
本实用新型的技术效果是:结构简单,能够阻止笔芯液从笔芯尾端流出,解决了书写时时断时续的问题,使书写更加流畅润滑。
附图说明
图1为本实用新型的结构示意图。
在图中,1、中性笔芯。
具体实施方式
如图1所示,本实用新型是这样来实现的,中性笔芯1的笔筒形状为上端口径小下端口径大的圆锥状,通过增加一个倾角,使得笔芯液在倒流时,对于同体积的笔芯液倒流过程中表面积会增大,因此总的吉布斯自由能会增大,鉴于自然状态下,反应总是向着吉布斯自由能减小,混乱度增大的方向进行,从而增大了笔芯液倒流的阻力,由于笔筒不是平行的圆柱状,内壁边缘的层流在倒流时会在末端相交一点,出现对流动力,促使液体向笔头流动,也增加了笔芯液从尾端流出的难度。

Claims (1)

1. 一种防止笔芯液外溢的中性笔芯,它包括中性笔芯,其特征是中性笔芯的笔筒形状为上端口径小下端口径大的圆锥状。
CN2011200205465U 2011-01-23 2011-01-23 防止笔芯液外溢的中性笔芯 Expired - Fee Related CN201979864U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200205465U CN201979864U (zh) 2011-01-23 2011-01-23 防止笔芯液外溢的中性笔芯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200205465U CN201979864U (zh) 2011-01-23 2011-01-23 防止笔芯液外溢的中性笔芯

Publications (1)

Publication Number Publication Date
CN201979864U true CN201979864U (zh) 2011-09-21

Family

ID=44607332

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200205465U Expired - Fee Related CN201979864U (zh) 2011-01-23 2011-01-23 防止笔芯液外溢的中性笔芯

Country Status (1)

Country Link
CN (1) CN201979864U (zh)

Similar Documents

Publication Publication Date Title
CN201979864U (zh) 防止笔芯液外溢的中性笔芯
CN204382876U (zh) 自带墨水的钢笔
CN203126308U (zh) 新型墨水瓶
CN204472211U (zh) 一种自动灌墨水钢笔
CN206277829U (zh) 一种可更换毛笔头的毛笔
CN201761192U (zh) 一种多功能笔
CN202952710U (zh) 带有u盘的笔
CN202847209U (zh) 不用墨水的不锈钢笔
CN202029555U (zh) 一种新型多用途笔
CN203438703U (zh) 一种软笔风格的沾水书法钢笔
CN201960900U (zh) 一种环保耐用的贮存式水彩笔
CN202413168U (zh) 一种修正液
CN202480630U (zh) 多用钢笔
CN201165124Y (zh) 多功能笔
CN201665085U (zh) 香味提神笔
CN202428880U (zh) 一种弹簧毛笔
CN201082631Y (zh) 多用途笔
CN202163150U (zh) 一种粉笔套
CN102555591A (zh) 一种不沾墨汁能写的毛笔
CN204605335U (zh) 一种练习毛笔字用墨汁瓶装置
CN201808298U (zh) 速写笔
CN202573432U (zh) 多用一体笔
CN203110622U (zh) 防止水心笔摔坏的笔管
CN202782299U (zh) 毛笔
CN203077967U (zh) 一种双向笔

Legal Events

Date Code Title Description
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: 20110921

Termination date: 20120123