Hydraulically balanced water-stop switch mechanism and shower head having same

A shower head having a water-stop switch mechanism, comprising a shower head main body, wherein the shower head main body is provided with a handle;

• the water-stop switch mechanism comprises a water-stop plug, a water passage pipe and a switch assembly, wherein
• the water passage pipe comprises an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, and a water passage is formed between the outer pipe and the inner pipe, a first end of the outer pipe serves as a water inlet, a second end of the outer pipe serves as a water outlet;
• a first end of the inner pipe proximal to the water outlet is an open end, the water-stop plug is arranged inside the inner pipe and the water-stop plug is movable toward the water outlet, the switch assembly is configured to cause movement of the water-stop plug, a second end of the inner pipe proximal to the water inlet is a closed end, and a sealing ring is provided between the water-stop plug and the inner pipe to form a chamber between the water-stop plug and the closed end so that the rear end of the water-stop plug and the chamber are isolated from the water inlet to prevent water from flowing to the chamber, and a chamber wall is provided with a ventilation hole to introduce atmospheric pressure to the chamber;
• and
• the water-stop switch mechanism is arranged inside the handle;
• wherein the switch assembly comprises a push rod, an automatic retractable and locking mechanism, and an elastic reset member configured to cause the water-stop plug to move toward the water outlet;
• the water-stop plug is provided with a chute with a sloping surface, and the push rod is movable toward the chute to drive the water-stop plug away from the water outlet;
• and
• the automatic retractable and locking mechanism is configured to cause movement of the push rod.