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Automatic protective mechanism of sharpener for tip of pencil

An automatic protection and pencil sharpener technology, which is applied in sharpening devices, printing, office supplies, etc., can solve problems such as pen tip thickness adjustment errors, and achieve the effect of simple and compact structure, small inertia, and guaranteed accuracy

Inactive Publication Date: 2007-10-03
魏承辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of inertia, the above-mentioned motor cannot stop cutting in time after the power is turned off, so there is a certain error in the adjustment of the thickness of the nib. To ensure the accuracy of the thickness of the nib, structural improvements are still needed.

Method used

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  • Automatic protective mechanism of sharpener for tip of pencil
  • Automatic protective mechanism of sharpener for tip of pencil
  • Automatic protective mechanism of sharpener for tip of pencil

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Experimental program
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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Embodiment, refer to Fig. 4 and Fig. 5.

[0030] The automatic protection mechanism for the tip of the pencil sharpener in this embodiment includes a hob assembly 2, a knife rest 1, a counterweight 6, a knife shaft 3, a slider 4, a control rod 5, a rotating handle 8 and a reset mechanism 9.

[0031] The hob assembly 2 can be driven by a power source to rotate, and its peripheral wall has a helical blade, and its rear end and knife rest 1 junction are also provided with a ring-shaped dust-proof element 21, which can be made of sponge.

[0032] The knife holder 1 has a tapered cavity 11 for inserting a pencil 10 , and a long cutting hole matched with the hob assembly 2 is provided on its side.

[0033] The cutter shaft 3 is used to drive the hob assembly 2 to rotate. It is passed through the hob assembly 2 and mounted on the tool holder ...

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PUM

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Abstract

An automatic lead tip protecting mechanism of pencil sharper is composed of a rolling cutter module, a cutter holder with a conic cavity for inserting a pencil in it and a lateral long cutting opening matched with rolling cutter module, a cutter arbor passing through said rolling cutter module and arranged on cutter holder, a slide block in the front of said conic cavity and pushed by pencil tip, a rotary handle, and restoring unit for said cutter arbor. It features that before the sharpening is finished, the rolling cutter module is separated from the pencil.

Description

technical field [0001] The invention relates to a pencil sharpener, in particular to an automatic protection mechanism for the nib of the pencil sharpener. Background technique [0002] There are two types of pencil sharpeners that are commonly used at present: [0003] The first type is a traditional single-edged pencil sharpener, which generally includes a body, a blade and a screw. One side of the body is provided with an insertion hole suitable for pencil insertion, and the inside has a tapered accommodation area, which is used as a cutting area for the pencil. The blade passes through the The screw is fixed on the upper end surface of the main body, the upper end surface covers the accommodation area and forms a tapered cavity, and leaves a pen chip hole, through the hand turning force and the extrusion force perpendicular to the turning force, the flaky pen scraps are released from the pen Chip holes planed out. Although the structure is simple, light and compact, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L23/08
Inventor 魏承辉
Owner 魏承辉
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