Brush head mounting structure of liquid spraying brush

A brush head mounting structure of a liquid spraying brush, comprising:

• a connecting base (3) provided at the end of a handle (1) and a mounting base (21) provided on a brush head (2), wherein the other side of the connecting base (3) with respect to the handle (1) is provided with a slider (32) having two sides, wherein one side of the two sides of the slider (32) corresponding to the handle (1) is provided with a weight-reducing groove (323), one side of the mounting base (21) adjacent to the connecting base (3) is provided with a sliding groove (212) in sliding fit with the slider (32), wherein one end of the sliding groove (212) is a closed end (2121) and the other end thereof is an open end (2122), a pressing part (215) is provided on one side of the mounting base (21) corresponding to the open end (2122), the pressing part (215) protrudes from the mounting base (21) toward the side away from the closed end (2121), wherein the disengagement of the brush head from the connecting base is based on pushing the pressing part (215) so that the brush head (2) can slide out of the connecting base (3) and thus the brush head (2) can be disassembled from the connecting base (3) for replacement, wherein the pressing part has a smooth curved surface, and the smooth curved surface is along circumferential direction of the mounting base (21), a limiting structure is provided between the connecting base (3) and the mounting base (21), the limiting structure is capable of limiting the connecting base (3) and the mounting base (21) along the sliding direction perpendicular to the slider (32), both sides of the mounting base (21) corresponding to the sliding groove (212) are provided with elastic arms (213), the position of the mounting base (21) corresponding to the elastic arm (213) is provided with an avoidance space (214) for the elastic arm (213) to expand outwards, the other side of the elastic arm (213) with respect to the avoidance space (214) is provided with a positioning protrusion (2131), the slider (32) is provided with a groove (321) in positioning fit with the positioning protrusion (2131), and the connecting base (3) and the mounting base (21) are capable of being limited along the sliding direction of the slider (32) in such a manner that the positioning protrusion (2131) is fit with the groove (321).