| 主权项 |
1. A sprinkler used for irrigation comprising
a base having a receiving seat and a housing; and a sprinkler head disposed over the base for adjusting fan angle of outflow; wherein the sprinkler head is connected to the receiving seat and including a base seat having an enlarged portion and a threaded portion extended from the enlarged portion; a collar member having an upper part and a lower part; the upper part of the collar member includes a tubular wall that is disposed with a helical rib; the helical rib is wound around the tubular wall, from a lower position to a higher position; and an adjustment member having a control part, a leaning part, an assembly part and a through hole; the leaning part includes a first against surface, a second against surface and a third against surface; the first against surface is a helical conical surface, the second against surface is a concave helical conical surface and the third against surface is a helical surface; wherein the threaded portion of the base seat is passed through the tubular wall of the collar member and then is engaged with the assembly part of the adjustment member so as to complete assembly of the sprinkler head. |
