Armature circuit in electric tool and battery pack socket
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United States of America Patent
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Jul 28, 2020
Grant Date -
Aug 10, 2017
app pub date -
Apr 21, 2017
filing date -
Dec 31, 2014
priority date (Note) -
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Abstract
The invention discloses an armature circuit in an electric tool and a power socket of the electric tool using the armature circuit, comprising a power supply and a motor. Two electrodes of the power supply are each provided with a connection structure connected to an output part. One connection structure is a multi-contact on/off controllable movable contact structure, and the other one is a double-faced multi-contact structure. According to the armature circuit, the internal resistance of the armature circuit of the motor is greatly reduced, the hardness of running characteristics of the motor is enhanced, and the working efficiency of the tool is improved; due to decreasing of the internal resistance, the current loss of the armature circuit is reduced, and the temperature rise of an electric appliance and contacts is reduced; with the same working efficiency, the battery capacity can be saved, and the battery cost is reduced.
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