Double-connecting-rod double-blade driving mechanism of electric scissors and electric scissors with double-connecting-rod double-blade driving mechanism

Abstract

The invention relates to the technical field of electric scissors, in particular to a double-connecting-rod double-blade driving mechanism of electric scissors and the electric scissors with the double-connecting-rod double-blade driving mechanism. The mechanism comprises a fixing seat, an upper blade, a lower blade, a rotating component, a first connecting rod and a second connecting rod, whereinthe fixing base is provided with a first rotating shaft piece and a second rotating shaft piece, the upper blade and the lower blade rotate around the first rotating shaft piece, the rotating component rotates around the second rotating shaft piece, and the swing degree can be increased, so that a shearing speed is increased, and the blockage caused by speed lowing is reduced; the occupied spaceof redundant teeth during operation does not need to be considered, so that the whole structure can be more compact; the part structure is simple, the part production and machining difficulty is greatly reduced, and therefore the manufacturing cost is reduced; and the first connecting rod, the second connecting rod, a first swing arm, a second swing arm and a third swing arm are more stable in operation, the mechanical strength is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of electric scissors, in particular to an electric scissors double-link double-knife drive mechanism and electric scissors. Background technique [0002] Electric scissors are tools used for trimming branches in orchards, gardens, and vines. Electric scissors mainly include upper blades, lower blades, gear parts and electric mechanisms. The electric mechanisms drive the upper and lower blades to rotate through the gear parts to achieve Shearing action; at present, in order to be able to drive the two knives at the same time, that is, the upper blade and the lower blade swing at the same time to realize the shearing action, a rack connected to the gear part is provided at the rear of the upper blade and the lower blade, and the electric mechanism After driving the gear part, the upper blade and the lower blade are driven to rotate at the same time, and when the upper blade and the lower blade rotate at the sa...

AI Technical Summary

Problems solved by technology

[0003] One, in the prior art, the distance from the rack to the turning point of the blade is increased by lengthening the rear portion of the blade, so that the torque can be increased according to the principle of leverage, but after increasing the torque in this way, the swing of the blade The amplitude angle is limited, and a larger gear component is required to ensure the swing angle of the blade, and the tooth accommodation position when not meshing with the rack needs to be considered in the position where the gear component is installed, resulting in an occupied area after the gear is installed. Big;

[0004] Second, when the teeth engage the upper blade and the lower blade, considering that the upper blade and the lower blade rotate in two opposite directions, the structural design of the gear part needs to ensure that there are two directions to drive the upper blade and the lower blade rotate in two different directions, resulting in a more complex structural design of the gear parts and increased difficulty in production and processing;

[0005] To sum up, when the prior art uses gear teeth to drive the upper blade and the lower blade for shearing operation, the shearing speed is low, the structure is not compact enough, the gear structure is complicated, it is not easy to produce and process, and the mechanical strength is low. The service life is short, so it is necessary to further propose an improvement scheme to solve the above problems

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