Patent ID: 8632019

Claim:
An automatic flow regulation sprinkler for gardening, comprising: a base comprising a transverse axle tube, wherein said transverse axle tube has at least one water outlet; and a mobile tube comprising a front water way and an outer transverse water way linking to each other, wherein another end of said mobile tube opposite to said front water way comprises an extension portion, wherein said outer transverse water way is pivoted to said transverse axle tube, wherein said outer transverse water way comprises a regulation portion arranged around said transverse axle tube, wherein said regulation portion is a sleeve having at least one open hole, wherein when said open hole is aligned with said water outlet, the farthest range and the largest volume of the water flow is provided, wherein when said mobile tube swings by the push of said extension portion, said open hole is gradually away from said corresponding water outlet, the angle of elevation of said front water way of said mobile tube is gradually lowered, the spout ranged out of said water outlet is shortened, and water flow is gradually decreased, wherein a receiving slot is formed to an end of said extension portion, wherein symmetric axles are formed to opposite two sides inside said extension portion, wherein a wheel is pivoted between said symmetric axles in said receiving slot, wherein a center of gravity of said mobile tube is close to said extension for normally keeping hanging down said extension portion.