When using an electric screwdriver, when he is tightening, the screwdriver in front of the screwdriver does not move, and then continues to idle to protect the motor. What is his principle?
Well, in the electric knife, it is specially designed with an adjustable torque pressure clutch. Good in different sizes for different size of screws. When the pressure is different, the friction force between the active and the rotating is different. Although it is different from the clutch structure of a car, it can be considered as an automobile clutch.
When the screw is not tight, the clutch is connected, when the screw force is large, the clutch slop will slip, thus pressing spring, a drive plate over the driven plate block after accelerating impact driven plate under a block, in the protection of motor and screw tight.
The driving plate is connected with the motor by a spline and is pressed by the spring to the driven piece which is connected with the screwdriver.
