Jet type spray head double-limiting reversing mechanism

A directional controlling mechanism of fluidic sprinkler, comprising

• a rear reversing mechanism;
• a front reversing mechanism;
• and
• a signal stream switching mechanism;
• wherein the front reversing mechanism comprises
• a rear reversing rod,
• a rear rotation axis,
• a first bearing,
• a third pin,
• a fourth pin,
• a second spacer pin,
• a shim,
• a reversing spring,
• a fifth pin,
• a spring sleeve,
• a locating axis,
• a second bearing,
• a sixth pin,
• a front rotation axis,
• a front reversing rod,
• an extension plate,
• a pre-stressed bolt,
• a short supporting bar,
• a minor spacing ring,
• a reversing plate,
• a medium spacing ring,
• a jet tub,
• a larger spacing ring;
• wherein the minor spacing ring, the medium spacing ring and the larger spacing ring are respectively fixed on the outside of the jet tube by the fastening bolt;
• wherein the rear rotation axis is arranged on the larger spacing ring, the first bearing is set between the rear reversing rod and the rear rotation axis, the third pin is inserted through the hole on the top of the rear rotation axis for the purpose of limiting the axial shift of the first bearing;
• the short supporting bar is installed on the minor spacing ring,
• wherein the fastening bolt is used to fix the extension plate on the top of the short supporting bar,
• wherein the front rotation axis is arranged in the extension plate, the second bearing is set between the rotation axis and the front reversing rod, the sixth pin is inserted through the hole in the top of the front rotation axis in order to limit the axial movement of the first bearing;
• wherein the locating axis is arranged on one end of the front reversing rod,
• wherein the spring sleeve is set on the locating axis,
• wherein the fifth pin go through the hole in the top of the locating axis to limit the axial shift of the spring sleeve;
• wherein one end of the reversing spring is limited by the second spacer pin and is sheathing in the hole of the rear reversing rod;
• wherein the fourth pin is inserted through the hole in the top of the second spacer pin in order to limiting the axial shift of the second spacer pin;
• wherein the shim is set in the second spacer pin, so as to reduce the friction force between the second spacer pin and the rear reversing rod;
• wherein the reversing plate press the outside of the medium spacing ring by tightening the bolt, so as to restrict the rotation angle of the second spacer pin and the front reversing rod.