Breaking Drag Decreasing type Break System

摘要

In the braking drag reduction type brake device of the present invention, the permanent magnet 20-1 fixed to the piston 7 and the electromagnet 20-1 in which the attraction force and the repulsive force are switched to each other by the direction change of the current supply, and the piston 7 Caliper with a built-in fixed sensor 31-1 for detecting a decrease in signal strength for increasing the current strength supplied to the electromagnet 20-1 when the distance is increased with the moving sensor 31-2 fixed to the 1) is included, so that when the brake is applied with the hydraulic force, the repulsive force is applied to the piston to form a strong braking force.When the piston returns, the braking drag is reduced by quickly returning to the initial position by the attraction force. By keeping the piston moving distance at all times, the brake drag torque amount is hardly changed even after the pad is durable.