Impact screwdriver
AssigneeChervon Intellectual Property Limited
InventorsLiang Chen, Zhongxin Xu
Life of this patent
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Abstract
An impact screwdriver includes a housing, a battery arranged in the housing, an electric motor arranged inside the housing, a transmission part driven by the electric motor and an impacting part, the impacting part including a hammer, an anvil matched to and hammered by the hammer, and an output shaft revolved by the anvil, wherein the rated voltage of the battery is less than or equal to 4.25V, the impact frequency of the hammer and the anvil is at least 30 Hz, and the ratio of the output torque (Nm) of the output shaft to the rated voltage of the battery is 1.8˜4.5.
Claims9
An impact screwdriver comprising:
- a housing;
- a battery arranged in the housing;
- an electric motor arranged inside the housing;
- a transmission part driven by the electric motor, wherein the electric motor has a driving shaft to provide a first rotational output, and the transmission part decelerates the rotational output of the driving shaft and then provides a second rotational output;
- and an impacting part coupled to the transmission part comprising a hammer, an anvil matched to and hammered by the hammer, and an output shaft revolved by the anvil, wherein the rated voltage of the battery is 3.6V, the impact frequency of the hammer and the anvil is at least 30 Hz, and the ratio of the output torque (Nm) of the output shaft to the rated voltage of the battery is 1.8-4.5.
Dependencies are inferred from the claim text.