Electric tool based on micro motor

Abstract

The invention discloses an electric tool based on a micro motor. The electric tool comprises a shell, a motor, a gear shifting push button and a gear shifting steel wire; the motor is arranged in theshell, a pushing groove is formed in the shell, the gear shifting push button is located in the pushing groove and can move back and forth in the pushing groove, the gear shifting steel wire is arranged at the lower part of the gear shifting push button, and the gear shifting steel wire is characterized in that the upper end of the gear shifting steel wire is fixedly connected to the gear shiftingpush button; the motor is provided with an elastic positioning piece, the elastic positioning piece comprises a fixing piece and an elastic piece, the fixing piece is fixedly connected to the motor,the elastic piece is in a cantilever structure and is connected to the upper end of the fixing piece in a bending mode, and the elastic piece is located below the gear shifting push button; and an upwards-protruding arc-shaped convex block is arranged on the elastic piece, the arc-shaped convex block is used for enabling the front part of the gear shifting push button to upwards abut against the shell, and a downwards-protruding arc-shaped positioning block is arranged on the lower surface of the gear shifting push button. The electric tool based on the micro motor has the advantages that thegear shifting effect is good, and the service life of the electric tool is long.

Description

technical field [0001] The invention relates to an electric tool, in particular to an electric tool based on a micro motor. Background technique [0002] Existing electric tools based on micro-motors generally include a housing, a motor, a gear box, and a tool head. The gear box mainly includes a front cover of the gearbox, a rear cover of the gearbox, and an Toggle the ring gear, the toggle ring gear is connected to the shift push button on the housing through a shift wire, the shift push button changes the meshing position between the toggle ring gear and the gear assembly by driving the shift wire, In this way, the electric tool can be switched between high-speed and low-speed working states; however, in the existing electric tools based on micro-motors, a rotating fulcrum is usually set on the housing, and the middle rotation of the shift wire is set on the rotating fulcrum. The lever principle is used to shift gears, and a gear position positioning device is set to pos...

AI Technical Summary

Problems solved by technology

[0002] Existing electric tools based on micro-motors generally include a housing, a motor, a gear box, and a tool head. The gear box mainly includes a front cover of the gearbox, a rear cover of the gearbox, and an Toggle the ring gear, the toggle ring gear is connected to the shift push button on the housing through a shift wire, the shift push button changes the meshing position between the toggle ring gear and the gear assembly by driving the shift wire, In this way, the electric tool can be switched between high-speed and low-speed working states; however, in the existing electric tools based on micro-motors, a rotating fulcrum is usually set on the housing, and the middle rotation of the shift wire is set on the rotating fulcrum. The lever principle is used to shift gears, and a gear position positioning device is set to position the shift wire. However, when the power tool with this structure is shifted, the shift wire is often insufficiently rotated and stuck on the gear position positioning device, resulting in inaccuracy. Shifting gears, resulting in tooth hitting between gears, affecting the service life of electric tools, or back gearing, requiring re-shifting, affecting work efficiency

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