Multifunctional utility knife

Abstract

The invention belongs to the technical field of office supplies and particularly relates to a multifunctional utility knife. The multifunctional utility knife comprises a knife shell, a blade, a disk-shaped torsional spring and a knob, wherein the back of the blade is provided with evenly arranged projecting teeth which are clamped into gaps of the torsional spring, the knob rotatably connected tothe knife shell is arranged below the torsional spring, one end of the torsional spring is fixedly connected to the middle of the torsional spring, the right of the knob passes through the knife shell, and the side face of the knob is designed as a matt face. The multifunctional utility knife has the advantages that a user manually turns the knob forward or reversely to drive the torsional springto rotate forward or reversely, then the blade is driven to move up and down through engagement of the projecting teeth and the torsional spring and extends out of or retracting into the knife shell,and the knob in matt face design is more convenient to use; a first slider and a second slider are pressed manually simultaneously to strike off a score below a breakage position, and accordingly theblade is reused and the user can be effectively protected from being accidentally injured when opening the blade directly.

Description

technical field [0001] The invention belongs to the technical field of office supplies, in particular to a multifunctional utility knife. Background technique [0002] A utility knife is a tool commonly used in industry and life. It is often used to cut paper, leather, plastic sheets or cardboard, etc.; Cutting, carving, and dotting are the main functions. [0003] There are also some technical solutions for utility knives in the prior art. For example, a Chinese patent with application number 2013105102098 discloses a utility knife, which includes a strip-shaped shell with openings at both ends, and is arranged on the shell The inner guide groove, the blade set in the guide groove, is used to fix and adjust the knife and slide the sliding block that can slide in the guide groove, wherein, the inner side of the upper part of the guide groove is symmetrically provided with a rectangular positioning opening , the sliding block is provided with an adjustment assembly for adju...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the prior art and solve the problems of poor blade toughness, low safety, and easy rust and setback of the blade, a multifunctional utility knife proposed by the present invention has evenly arranged knife holes on the blade to increase the blade's durability. Toughness, there are convex teeth on the back of the knife, and the convex teeth are serrated, which can realize the dual-purpose function of the utility knife; through the setting of the first sharpening plate and the second sharpening plate, when the blade moves up and down, the first sharpening The knife plate and the second sharpening plate grind the blade to prevent the blade from frustrating and rusting. Through the cutting device, it is convenient to cut off the utility knife after it is damaged, and avoid direct contact with the blade to cause injury to the human hand

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