Portable electric chainsaw

Abstract

The chainsaw has a power source enclosed in a case (1), and a cutting device including an inverted tooth chain (2) that is engaged with a drive pinion. The source assures the rotation of the pinion, and has an electronically-switched and controlled direct current brushless electric motor (4) that is provided with magnet rotors. A carrying or operating handle (5) is arranged above the pinion and is oriented perpendicular to a longitudinal axis of a guide bar (3). The pinion is mounted coaxially to an axis of the rotor of the motor.

Description

technical field [0001] The invention relates to a portable electric chain saw. Background technique [0002] Portable chainsaws, also known as log saws (cut saws), are commonly used to perform pruning work or forestry work, such as felling, pruning and chopping of trees. [0003] This relates to motor-driven tools for cutting wood, consisting essentially of an integrated small unit comprising a power source, a cutting system and a handle arranged and constructed so that both hands can be used during the work Hold on tight and hold on. [0004] More often, the power source consists of a heat engine, which means its operation is noisy and polluting. [0005] Portable section saws are also known whose power source consists of a DC brush motor or an AC brush motor with a power of between 400 W and 2500 W and which operates relatively quietly and with little pollution. [0006] However, regardless of the nature of the power source (thermal or electric), the chainsaws currently...

AI Technical Summary

Problems solved by technology

[0010] This motorized device is awkward and tiring to operate, primarily due to the location of the handlebars and the center of gravity of the device being at the front and away from the user's hand

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