| 摘要 |
It is one kind of hand-held electric power tool with safety shift device, including housing assembly, motor, end cap of gear box, gear box, output shaft, final-stage rack wheel, final-stage pinion, gear pin roll, safety shift pin roll, gear knockout plate, gear synchronous spring, safety shift spring, safety push rod, stop pin, variable-speed pinion axis, variable-speed rack wheel, big bevel pinion, bevel pinion and grinding wheel shield. Among which, the gear pin roll and safety shift pin roll are installed within the gear box in parallel, the gear knockout plate is connected with final-stage rack wheel and final-stage pinion, the gear synchronous spring is installed on the gear pin roll while the safety shift spring is installed on the safety shift pin roll. This new practical hand-held electric power tool with safety shift device is characterized by low-speed gear automatic recovery function and the dangers of disoperation will be avoided, being safe and convenient.
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