An electric time-delay straight-blade pencil sharpener

Abstract

The invention discloses an electric delayed straight knife type pencil sharpener. According to the pencil sharpener, a gear part is arranged on a knife rest in a sleeving mode and is connected to a rotating motor; a touch part is arranged below the gear part; a first elastic sheet is arranged at the bottom of one side of the touch part; a second elastic sheet is arranged below the touch part, and an interval is reserved between the touch part and the second elastic sheet; a transmission worm is embedded in the gear part, and the transmission worm and the gear part keep synchronous rotational movement; the lower end of the transmission worm is located in the touch part and can move downwards to act on the second elastic sheet; rotating threads are arranged on the outer surface of the lower end of the transmission worm; a sliding block is arranged at the bottom of the other side of the touch part; the touch part press downwards to push the end part of the sliding block to get close to the surface of a worm body of the transmission worm; a pen blocking block which abuts against the transmission worm is arranged at the bottom of the inner part of the knife rest; and a spring assembly which is in a compression state is arranged in an outer shell and acts on the touch part and the transmission worm. The pencil sharpener has the advantages that the pencil stroke can be controlled after a pencil point of a pencil is sharpened, excessive sharpening can be avoided, delayed power-off can be realized through a mechanical structure, and the pencil point can be smooth and good in hand feeling.

Description

technical field [0001] The invention relates to a stationery product, in particular to an electric straight-blade pencil sharpener which realizes time delay through a mechanical structure. Background technique [0002] A pencil sharpener is a tool for sharpening pencils, and most of the ones used on the market are manual pencil sharpeners. Manual pencil sharpeners generally have a casing and a cutter set on a rotating shaft. Insert a pencil into the cutter and manually rotate the cutter or pencil to cut the pencil. When using this pencil sharpener, you must Constantly turning the pencil sharpener can achieve the purpose of sharpening the pencil, which is not only inefficient, but also easily breaks the pen core with a little uneven force. [0003] The electric straight-knife type pencil sharpener of present design, motor is set on the rotating shaft, drives cutter to rotate by motor, completes cutting function automatically. The automatic straight-knife pencil sharpener us...

AI Technical Summary

Problems solved by technology

The automatic straight-knife pencil sharpener uses a motor instead of manual operation to make pencil sharpening more convenient, but the automatic straight-knife pencil sharpeners on the market still require the user to manually control the switch, when to start sharpening pencils, and when to turn off the pencil sharpener , both require user control

It is not easy for the user to control the time for sharpening the pen. If the time is long, the pen tip will be sharpened too much, which will cause waste. If the time is short, the pen tip will not be sharpened yet.

Moreover, if you stop sharpening the pencil after sharpening the pen, the tip of the pencil does not form a regular cone structure, which not only looks unattractive, but also affects the feel of use

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