Water spray gun

A water spray gun, comprising:

• a) a gun body, the gun body comprising:
• a water passage and double water hole disposed therein;
• b) a valve switch, the valve switch comprising:
• a button, a pressing piece comprising a unilaterally oblique plane, a rear plate comprising an inner guide rail, a rotating piece comprising a unilaterally oblique plane, a first spring, a front sealing ring, a switch rotating core, and a double sealing ring, all of which being successively mounted at an upper rear part of the gun body;
• and
• c) a device for switching a spray pattern, the device comprising a water spray cap, a water spray plate, a decentered interface, a second spring, a wedge rotating piece for water diversion comprising a plurality of negative wedge blocks each comprising a negative wedge, a wedge push rod comprising a plurality of positive wedge blocks each comprising a positive wedge, a housing of a gun head, and a trigger, all of which being successively mounted on an upper part of the gun body;
• wherein
• the button is movably disposed on an upper rear part of the gun body for controlling the valve switch to close or open the water passage;
• the trigger is movably disposed at a middle part of the gun body for controlling the device for switching the spray pattern via a pin;
• a water flowing state and a water stopping sate of the switch valve are switched by pressing and releasing the button for once;
• when the button is pressed, the pressing piece is driven by the inner guide rail of the rear plate to move merely in a pressing direction while the rotating piece is driven by the unilaterally oblique plane of the pressing piece to rotate;
• and the switch rotating core is driven by the rotating piece to close or open the double water hole disposed inside the gun body to control the water flow in the water passage whereby realizing the switch between the water flowing state and the water stopping state;
• and
• when a lower part of the trigger is pressed, an upper part of the trigger functions as a lever using the pin as a fulcrum and pushes the wedge push rod;
• the positive wedge of each positive wedge block disposed on the wedge push rod interacts with the negative wedge of each negative wedge block disposed at the wedge rotating piece for water diversion so as to drive the wedge rotating piece for water diversion to rotate;
• the water spray cap is driven by the wedge rotating piece for water diversion to rotate thereby realizing the switch of the water diversion.