Brake assembly for a bicycle

A brake assembly for a bicycle and comprising:

• a stationary portion having a first side and a second side, said first side having a first tube extending perpendicularly from a bottom thereof and said first tube communicating with a first hole defined in said bottom so as to receive a handlebar in said first tube, a skirt portion extending from said bottom and being in parallel with said first tube, an end plate transversely disposed below said first tube and both of two ends of said end plate connected to an inner periphery of said skirt portion so as to define a recess between said skirt portion, said first tube, said bottom of said stationary portion and said end plate, a second tube extending from said second side of said stationary portion and having a passage defined longitudinally therein, said passage communicating with a second hole defined in said bottom;
• a rotatable portion having a first side and a second side, said first side having a third tube extending perpendicularly from a bottom thereof and said third tube communicating with a third hole defined in said rotatable portion, a protrusion extending perpendicularly from said second side of said bottom and extending around a periphery of said third hole, said protrusion having a head portion extending radially therefrom, said third tube rotatably mounted to said first tube and a spring disposed between said end plate and said head portion, and
• a brake cable extending through said second tube and said second hole and having one end thereof fixedly connected to said head portion such that when rotating, said rotatable portion is rotated to compress said spring, said brake cable is pulled.