electric screw driver

Abstract

The invention discloses an electric screw driver which comprises a handle outer shell, a handle cap, a high-voltage direct-current motor, a control circuit, a deceleration torque-varying box, a main shaft, a connecting shaft and an elbow assembly. The high-voltage direct-current motor, the control circuit, the deceleration torque-varying box and the main shaft are all arranged in the handle outer shell, the main shaft penetrates through the handle cap to output twisting force of the electric screw driver, and the elbow assembly comprises an elbow base, a cover of the elbow base, an output shaft and a pair of rotary teeth, wherein one rotary tooth is arranged on the output shaft, the other rotary tooth is arranged at the front end of the connecting shaft, the output shaft and the connecting shaft are respectively fixed by bearings to arrange the rotary teeth in the elbow base, the back end of the connecting shaft is connected with the main shaft, and the connecting shaft and the main shaft share the same center shaft. The electric screw driver is strong in practicability, the twisting force can be adjusted at will, the twisting force is constant and accurate, the mains supply is directly used for working, the defect that a straight-bar type electric screw driver cannot be used in a narrow station is overcome, and the electric screw driver is suitable for assembly lines and various maintaining and installing occasions.

Description

technical field [0001] The invention relates to the field of electric tools, in particular to an electric screwdriver which can be used in various working positions, especially in narrow working areas. Background technique [0002] At present, the electric screwdrivers on the market are all straight-rod type, which cannot be used in narrow working areas, and can only be operated manually, and the efficiency is low. Sometimes the work position is tight and even manual operation is difficult, so that the torque of the fastening screw cannot meet the requirements. affect product quality. This makes it extremely important to develop an electric screwdriver adapted to use in a narrow workspace. Contents of the invention [0003] The problem to be solved by the present invention is to overcome the defects of the above-mentioned prior art, and provide an electric screwdriver that can be used in various working positions, especially in narrow working areas. [0004] The technica...

AI Technical Summary

Problems solved by technology

[0002] At present, the electric screwdrivers on the market are all straight-rod type, which cannot be used in narrow working areas, and can only be operated manually, and the efficiency is low. Sometimes the work position is tight and even manual operation is difficult, so that the torque of the fastening screw cannot meet the requirements. affect product quality

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