Patent attributes
A brake adjusting device is mountable to a frame and a rotary disc of a cable reel and includes a rotary knob mounted to an outside surface of the frame. A first pad is arranged between the frame and the rotary disc and is coupled to the rotary knob for synchronous rotation therewith and includes pushing parts in the form of slope. A second pad is arranged between the first pad and the rotary disc and is provided, on two opposite surfaces thereof, with first and second slope sections and friction plates. The rotary knob is operable to rotate the first pad for causing the pushing parts to press against first and second slope sections in order to move the second pad toward the rotary disc and causing the friction plates to get into tight engagement with the rotary disc to result in a braking effect.