Sharpening mechanism of pencil sharpener, and pencil sharpener

Abstract

The invention relates to a sharpening mechanism of a pencil sharpener. The sharpening mechanism of the pencil sharpener comprises a gear seat, a cutter rest and a hobbing cutter, wherein the cutter rest is rotationally arranged on the gear seat; the hobbing cutter is arranged on the cutter rest; a plurality of cutting edges spirally extending from top to bottom and arranged at intervals in the circumferential direction of the hobbing cutter are arranged on the outer circumferential wall of the hobbing cutter; a plurality of tooth jaws matched with the cutting edges are arranged on the inner circumferential wall of the gear seat at intervals; and the hobbing cutter forms rotational fit with the gear seat through the engagement of the cutting edges and the tooth jaws. The cutting edges formdirect fit with the tooth jaws, and on one hand, the number of parts is reduced, so that the whole cutting structure is simple and efficient, and the fault rate is greatly lowered; on the other hand,after a transmission gear is omitted, a gap between the transmission gear and the hobbing cutter does not exist any more, so that chipping residue after pencil sharpening can be reduced, play betweenthe transmission gear and the hobbing cutter is avoided, the stability is improved, more stable sharpening hand feeling is achieved, noise during sharpening is further greatly lowered, and multiple purposes are achieved; and in addition, the invention further relates to a stable sharpener with the sharpening mechanism.

Description

technical field [0001] The invention relates to the field of pencil sharpeners, in particular to a cutting mechanism of a pencil sharpener and the pencil sharpener. Background technique [0002] The pencil sharpener is a relatively common stationery. When it first entered the market, the pencil sharpener was only the most basic pencil sharpening tool. However, with the increase in the demand for pencils, people are more concerned about the quality and speed of the pencil sharpener. All have higher requirements, therefore, a pencil sharpener for automatic pencil sharpening has been developed. At present, whether it is a manual or electric automatic pencil sharpener, the core pencil sharpening structure is in the shell. A bracket and a hob are arranged inside, a rotating shaft passes through the hob to connect the hob to the bracket, and a drive gear meshing with the driving device is also arranged on the hob, such as the Chinese utility model patent with the patent number CN2...

AI Technical Summary

Problems solved by technology

[0003] 1. Inside the entire pencil sharpener, the installation of the bracket and the hob requires the cooperation of multiple parts. The core coordination structure of the pencil sharpener is still relatively complicated, which not only increases the failure rate and maintenance difficulty, but also increases the production cost;

[0004] 2. There are assembly gaps between multiple parts. The lead powder and sawdust foam left after sharpening the pencil will fill in the above gaps, which not only increases the difficulty of cleaning, but also causes abnormal wear of the cutter head in the long run. , shorten the service life of the whole pencil sharpener;

[0005] 3. The gap between the transmission gear and the hob will cause the hob to move back and forth during the rotation process. This movement directly causes a lot of noise when sharpening the pencil, and the user experience is not good

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