Ozone faucet switching structure

A faucet apparatus comprising:

• a faucet having a water outlet tube, and a guiding tube settled inside an interior space of the faucet, and a first end of the guiding tube connected to an ozonizer;
• a connecting unit comprising a fixing portion and a first threaded segment respectively formed at an upper and a lower end thereof, and a through hole vertically penetrating through an inner edge of the fixing portion of the connecting unit;
• the connecting unit connected to the water outlet tube through the fixing portion to allow the guiding tube to communicate with the first through hole, and a locating annular groove, which is formed at a lower end of the first threaded segment, configured to receive a C-shaped engaging unit therein;
• an upper opening and a lower opening, which are communicated with each other, vertically and respectively penetrate through an upper portion and a lower portion of the connecting unit, and the upper opening further communicated with the through hole;
• an inner wall of the upper opening having at least a vertical vent which is extended downwardly toward an inner wall of the lower opening, and a bore, which penetrates through an outer surface of the connecting unit, communicated with the vent;
• the outer surface of the connecting unit further comprising at least a first annular groove located near the bore, and an elastic ring disposed in the first annular groove;
• the bore located between the elastic ring and the first threaded segment, and a sealing ring disposed on the outer surface of the connecting unit between the bore and the first threaded segment;
• a bubbler secured on the upper opening of the connecting unit, and a top surface of the bubbler communicated with the water outlet tube of the faucet through a plurality of pores which are configured to produce a splashing stream of water, and a plurality of lateral openings penetrating through a lateral surface of the bubbler such that the through hole, the vent, the upper opening, the pores and the lower opening configured to communicate with each other;
• and
• a control sleeve covering around an outer periphery of the lower opening of the connecting unit, and a first surface, which is formed at an upper portion of an inner surface of the control sleeve, borne against the elastic ring to create an air-tight seal;
• a second threaded segment, which is formed at a lower portion of the inner surface of the control sleeve, configured to engage with the first threaded segment of the control unit to adjust relative positions between the control sleeve and the connecting unit;
• a second surface located between the first surface and the second threaded segment, and the sealing ring borne against the second surface to achieve an air-tight effect.