Showerhead with water passage switching device

A showerhead with a water passage switching structure, comprising:

• a seat body comprising a water inlet joint, wherein the water inlet joint is configured to connect externally a water outlet pipeline;
• a water outlet body assembly fixedly connected to the seat body, wherein the water outlet body assembly comprises at least two mutually separated water distribution passages, each of the water distribution passages generates a specific functional water spray;
• a water sealing chamber is formed between the seat body and the water outlet body assembly, the water outlet body assembly has a through passage formed at a central portion corresponding to the water sealing chamber, the through passage is separated from the water passages inside the water outlet body assembly, and each of the water distribution passages is provided with at least one water-passing opening in an water inlet end face of the water outlet body assembly, and the water-passing openings are located inside the water sealing chamber and are arranged circumferentially by taking a central axis L of the water sealing chamber as the center and R as the radius of a circle;
• a water distribution valve, comprising a valve body and a connecting rod, wherein the valve body is in the shape of a disk, an inner cavity of the water distribution valve forms a water holding chamber, the valve body is provided with a water inlet pipeline at a central portion of an end face, on one side, of the valve body, and the water inlet pipeline is in fluid communication with the water inlet joint, a connecting rod is fixedly connected to a central portion of an end face, on the other side, of the valve body, and the end face on this side of the valve body is provided with at least one water distribution hole, the valve body is disposed within the water sealing chamber, and the connecting rod is disposed to pass through the through passage, water accessing through the water inlet joint flows into the water holding chamber only through the water inlet pipeline of the valve body, and flows out through the at least one water distribution hole;
• and
• a knob, arranged on an outer end face of the water outlet body assembly and fixedly connected to the connecting rod, wherein the knob is rotated by an external force, and further drives the valve body to rotate by 360° about a central axis L, to allow the at least one water distribution hole of the valve body to be selectively in fluid communication with the respective water-passing openings of the water distribution passages entirely or partially, thereby achieving water passage switching for water spray of different functions.