Curved saw

Abstract

This invention relates to a curved saw, the saw body 1 is curved from the base toward the tip. The concavely arch-shaped side rim of the curved saw body 1 is provided with many saw teeth 2. The cross angle ([alpha]) of a cutting edge 3 as the base side rim of the saw tooth 2 situated at the base of the saw body 1 with a tooth point line 5 joining the tooth points 4 of the saw teeth 2 each other is made larger, while the cross angle ([alpha]) of the cutting edge 3 as the base side rim of the saw tooth 2 situated at the tip of the saw body 1 with a tooth point line 5 joining the tooth points 4 of the saw teeth 2 each other is made smaller. Thereby, the total saw teeth from the base to the tip of the saw body can be utilized, realizing the objective saw, mainly a pruning saw, enabling cutting works to be smoothly performed with a constant force.

Description

technical field [0001] The invention relates to a sawtooth shape of a jigsaw, in particular to a jigsaw with a curved saw body and a plurality of saw teeth formed on the concave arc-shaped edge of the curved saw body. Background technique [0002] The pruning saw is mainly used for pruning growing trees and fruit trees. In order to make effective cutting, the saw body needs to be pressed against the cut object. At this time, the pruning saw whose saw body is arranged in a straight line, when cutting with the front part, it is necessary to increase the force to press the saw body against the cut object. In practice, generally only the base of the saw body can be used for cutting operations. Especially when saw body is installed at long handle front end, and high place branch is trimmed, it is just very difficult to push down cut-off thing with saw body. As a kind of mode that solves this problem, what generally use is to make saw body curved, and the jigsaw that many serrat...

AI Technical Summary

Problems solved by technology

[0007] In the invention described in Patent Document 1, the teeth at the front end of the saw body are likely to be caught by the cutting object (squeezed), that is, the cutting of the teeth is larger than that of the base, so smooth cutting cannot be performed.

[0008] This shows that above-mentioned existing jigsaw obviously still has inconvenience and defect in structure and use, and needs to be further improved urgently

In order to solve the problems of the jigsaw, the relevant manufacturers have tried their best to find a solution, but no suitable design has been developed for a long time, and the general products do not have a suitable structure to solve the above problems, which is obvious. It is a problem that relevant industry players are eager to solve

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