Bicycle hub apparatus

A soundless bicycle hub apparatus comprising a wheel hub, a hub body for installing a sprocket, and a one-way bearing unit positioned between the wheel hub and the hub body;

• a connecting housing formed at a lateral end of the wheel hub, and a shaft axially protruding from a central portion of the connecting housing;
• a driving ring, which is made of high-strength material, securely positioned in the connecting housing, and a driving surface formed on an inner periphery of the driving ring;
• the hub body comprising a gear sleeve and a driving sleeve, and the driving sleeve having a driving section;
• two first bearing members, which are respectively coupled with an inner periphery of the driving sleeve, configured to be disposed on the shaft;
• the bearing unit, which is disposed between the driving surface of the driving ring and the driving section of the driving sleeve comprising an annular cage sleeve, and a plurality of engaging blocks engaged with the cage sleeve;
• and an elastic unit configured to be disposed on an outer periphery of the cage sleeve to limit positions of the engaging blocks.