Desk platform structure for fitness bike

A desk platform structure for a fitness bike, comprising:

• a desk platform;
• a desk platform fixing and sliding mechanism;
• and
• a supporting rod, wherein the desk platform is installed on the desk platform fixing and sliding mechanism, the desk platform fixing and sliding mechanism is installed on the supporting rod, and the supporting rod is installed on a fitness bike, wherein the desk platform fixing and sliding mechanism comprises:
• a guiding bar;
• a pair of fixing bars, the desk platform being installed on the fixing bars;
• a pair of sliding rails, the fixing bars being installed on the sliding rails to form a slidable structure;
• a fixing rack, the sliding rails fixed on the guiding bar at two sides of the fixing rack;
• a fixing base, disposed on the fixing rack, the fixing base and the supporting rod being connected to form a rotatable angle adjustment structure,
• a braking mechanism configured to guarantee stable slip of the desk platform and disposed between the fixing bars and the fixing rack;
• and
• a control mechanism configured to control sliding and positioning of the fixing bar and disposed between the fixing bars and the fixing rack.