Mechanical pencil allowing thicknesses of pencil leads to be adjustable

A technology for propelling pencils and pencils, applied to mechanical pencils, printing, writing utensils, etc., can solve the problems of increased cost, inconvenient replacement, and inability to replace each other, and achieve the effects of smooth writing, low cost, and convenient use

Inactive Publication Date: 2017-01-04
夏凡姝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The mechanical pencil replaces the traditional wooden pencil with the characteristics of uniform thickness and smooth writing. The existing mechanical pencil refill generally includes two specifications of 0.5mm and 0.7mm. For a pencil, only one specification of refill can be used. Mutual replacement, for users with different needs, not only increases the cost but also inconvenient replacement

Method used

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  • Mechanical pencil allowing thicknesses of pencil leads to be adjustable

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Embodiment Construction

[0010] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes a pulsating mechanical pencil body 1. The core-protecting tube 2 of the pencil body 1 is an inverted trapezoid with a thick top and a thin bottom, so that pen cores 10 with different thicknesses can enter the core-protecting tube 2, and the core-protecting tube 2 has a bottom The ring can be used to elastically change the tooth mouth 3 of the diameter of the lower part of the core guard tube 2. The outer layer of the tooth mouth 3 has a fixed ring 4 for tightening the core guard tube 2 and the pen core, and the outside of the lower part of the pencil body 1 is provided with an adjustable fixed ring. The push-pull button 5 at position 4, when replacing the refill 10, push the push-pull button 5 upwards to loosen the fixing ri...

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PUM

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Abstract

The invention discloses a mechanical pencil allowing the thicknesses of pencil leads to be adjustable. The mechanical pencil comprises an impulse type mechanical pencil body, a lead protection pipe of the pencil body is of an inverted trapezoidal shape with the upper part thicker than the lower part, a circle of tooth openings used for elastically changing the diameter of the lower part of the lead protection pipe are formed in the lower part of the lead protection pipe, a fixing ring used for hooping the lead protection pipe and the pencil leads is arranged on the outer layers of the tooth openings, a push-pull button for adjusting the position of the fixing ring is arranged on the outer side of the lower part of the pencil body, a connecting pipe is arranged at the upper part of the lead protection pipe, the upper part of the connecting pipe is connected to a left lead storage pipe and a right lead storage pipe, and the lead storage pipes communicate with the connecting pipe through lead leakage holes. According to the mechanical pencil, the pencil leads of two thicknesses can be switched freely, use is convenient, writing is smooth, and the cost is low. Thus, the mechanical pencil is worthy of popularization.

Description

technical field [0001] The invention belongs to the field of stationery, in particular to a mechanical pencil with adjustable pen core thickness. Background technique [0002] The mechanical pencil replaces the traditional wooden pencil with the characteristics of uniform thickness and smooth writing. The existing mechanical pencil refill generally includes two specifications of 0.5mm and 0.7mm. For a pencil, only one specification of refill can be used. Mutual replacement not only increases the cost but also inconvenient replacement for users with different needs. Contents of the invention [0003] In order to make up for the deficiencies of the prior art, the present invention provides a mechanical pencil with adjustable refill thickness which is convenient to use and low in cost. [0004] The present invention is achieved through the following technical solutions: [0005] A mechanical pencil with adjustable refill thickness, including a pulsating mechanical pencil bo...

Claims

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Application Information

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IPC IPC(8): B43K21/00
Inventor 夏凡姝
Owner 夏凡姝
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