Self-locking safety cutting knife

Abstract

The invention provides a self-locking safety cutting knife. The knife comprises a shank, a holder, a cut head and a blade. The knife is characterized by further comprising a locking mechanism consisting of a lock knob and a wing-shaped spring piece. A mounting hole is jointly arranged on the left shank and the holder for mounting the locking mechanism, a first clamping groove is arranged on the front part of the cut head for withdrawing and locking the knife, and a second clamping groove is arranged on the rear part of the cut head for releasing and locking the knife, the locking mechanism ismovably arranged in the mounting hole, the lock knob in the locking mechanism is connected with the first clamping groove in a locked manner to form locking while withdrawing the knife, and the lock knob is connected with the second clamping groove in a locked manner to form locking while releasing the knife. The knife can be automatically locked while releasing the knifing into the stop positionand withdrawing the knife into the stop position, and can be conveniently released, withdrawn and rapidly locked and unlocked. The knife has the advantages of reasonble structure, conveinent and safeuse.

Description

technical field [0001] The invention relates to a hand tool, in particular to a safety self-locking cutting knife. Background technique [0002] Traditional cutting knives are usually divided into fixed type, folding type and telescopic type, and are generally used to cut paper, cloth, leather, etc. Telescopic cutting knives generally use the push button to push the blade hidden in the handle out, but before and after the blade is stretched out, it often cannot be locked, resulting in looseness under certain circumstances. If you accidentally press the push button, or accidentally touch the push button when carrying it, it will cause non-operational knife output and retraction, which will affect the use and cause safety hazards. Contents of the invention [0003] The object of the present invention is to provide a safety self-locking cutting knife that can be locked before and after the blade is stretched out. [0004] In order to achieve the above object, the present in...

AI Technical Summary

Problems solved by technology

Telescopic cutting knives generally use the push button to push the blade hidden in the handle out, but before and after the blade is stretched out, it often cannot be locked, resulting in looseness under certain circumstances. If you accidentally press the push button, or accidentally touch the push button when carrying it, it will cause non-operational knife output and retraction, which will affect the use and cause safety hazards

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