Bicycle brake assembly

A bicycle brake assembly comprising:

• a pair of brake arms pivotally attached to a bicycle frame which has a bottom bracket, said bottom bracket having an axle rotatably received therein and said axle having a first end and a second end, said first end of said axle having a first threaded portion defined in an outer periphery thereof and having a first threaded hole defined therein, said second end of said axle having a second threaded hole defined therein for attachment with two cranks respectively;
• an activating member having a first hole defined therethrough which has a threaded inner periphery for engagement with said first threaded portion of said axle, said activating member having a tubular portion extending from one of two sides thereof and said tubular portion having a second threaded portion defined in an outer periphery thereof, a plurality of ratchets extending from said activating member and located on the same side where said tubular portion extends;
• a casing having a second hole defined centrally therethrough and a plurality of ratchet gears extending radially from an inner periphery defining said second hole, a lug extending radially from an outer periphery of said casing and having a third hole defined therethrough, said activating member rotatably received in said second hole with said ratchets contacting said ratchet gears of said casing;
• a ring having an inner threaded hole defined therein for engagement with said second threaded portion of said activating member, and
• a brake cable connected between said pair of arms and said third hole of said lug of said casing.