Driving Device of a Sprinkler and Swinging Sprinkler with the Driving Device

A driving device of a sprinkler comprising a tubular housing having an inlet tube attached to a rear open end of the housing;

• a diversion assembly mounted in the housing and having
• a base having
• a connecting tube protruding from a front surface of the base;
• a containing chamber formed in a rear surface of the base and corresponding to and communicating with the connecting tube;
• an inlet chamber formed in the rear surface of the base adjacent to the containing chamber;
• an inner wall defined around the containing chamber and the inlet chamber;
• a divider formed between the containing chamber and the inlet chamber and having two ends;
• and
• a first gap and a second gap respectively defined between the ends of the divider and the inner wall of the base and connecting the containing chamber with the inlet chamber;
• an impeller rotatably mounted in the containing chamber of the base and having an actuating gear coaxially formed on a front surface of the impeller, mounted through the connecting tube and protruding to the front surface of the base;
• and
• a rear cover mounted on the rear surface of the base, covering the containing chamber and having an inlet hole formed through the rear cover and corresponding to and communicating with the inlet chamber of the base;
• a gear set mounted in the housing and on the front surface of the base and having
• a transmission assembly connected to the actuating gear of the impeller;
• a driven gear connected to the transmission assembly and having multiple ratchet teeth formed in and around a rear surface of the driven gear;
• and
• a ratchet gear mounted on the rear surface of the driven gear and engaging the ratchet teeth of the driven gear;
• a switch assembly having
• a front cover mounted on and covering a front open end of the housing;
• a switch valve pivotally mounted on the front surface of the base and alternatively sealing the first and second gaps of the base;
• a switch rod mounted through the front cover;
• a resilient strip mounted between and connected to the switch valve and the switch rod;
• an inner ring mounted on a front surface of the front cover, securely connected to the switch rod and having multiple positioning teeth formed in and around an outer surface of the inner ring;
• and
• two switch rings mounted around the inner ring, and each switch ring having
• at least one toothed part formed in an inner surface of the switch ring and engaging the positioning teeth of the inner ring;
• and
• a stop protruding radially from an outer surface of the switch ring;
• and
• a nozzle mounted through the inner ring and the front cover, connected to the connecting tube of the base and having
• a rear end connected to the ratchet gear;
• a disk formed around an outer surface of the nozzle;
• and
• a limit formed on a peripheral edge of the disk and protruding between and alternatively abutting the stops of the switch rings.