Sprinkler Head
AssigneeSenju Sprinkler Co., Ltd.
InventorYasuaki Koiwa
Life of this patent
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Abstract
A sprinkler head includes a main body having, thereinside, a nozzle connected to a water supply pipe, a deflector having a disk shape with a plurality of slits in an edge portion, where the deflector is disposed so as to intersect with a central axis of the nozzle, and a support member configured to connect the main body to the deflector. A circular arc shaped first convex portion is formed in a direction from the center of the deflector to a position obtained by rotating the position of the support member by 90 degrees around the center, circular arc shaped first slits are disposed on either side of the convex portion, and the shape of a portion from one of the first slits to the other via the first convex portion is corrugated.
Claims15
1-12. (canceled)
A sprinkler head comprising:
- a main body having a nozzle thereinside, the nozzle being connected to a water supply pipe;
- a deflector disposed so as to intersect with a central axis of the nozzle;
- and
- a support member configured to connect the main body to the deflector,
- wherein the deflector is formed in a disk shape and has a plurality of convex portions, a first convex portion, a second convex portion, and a plurality of first slits,
- wherein the top ends of the convex portions form an outer circumference circle of the deflector,
- wherein the first convex portion is formed as a convex circular-arc shaped edge located at a position obtained by rotating the position of the support member by 90 degrees around the center of the deflector, and the second convex portion is formed as a convex circular-arc shaped edge adjacent to the first slit,
- wherein the first slits are formed as concave circular-arc shaped edges located on either side of the first convex portion, and
- wherein an outer edge portion in which one of the first slits, the first convex portion, and the other first slit are continuously arranged is formed as a corrugated shape in which the circular-arc shaped edges thereof are continuously arranged, and the corrugated outer edge portion is located inside the outer circumference circle of the deflector.
The sprinkler head according to claim 1, wherein the deflector has a second slit formed as a concave circular-arc shaped edge adjacent to the second convex portion, and
- wherein the circular-arc shaped edge of the first slit and the circular-arc shaped edge of the second slit are in contact with the circumference of a circle.
The sprinkler head according to claim 2, wherein the deflector further includes two pins disposed on a first straight line that intersects with the central axis of the nozzle and that extends along a flat surface of the deflector and third convex portions each extending to the outside of the outer circumference circle of the deflector, and
- wherein the pins are disposed on the third convex portions.
The sprinkler head according to claim 3, wherein the deflector further has fourth convex portions on either side of the third convex portion, and the top end of each of the fourth convex portions and the top end of the third convex portion are located on a second straight line that intersects perpendicularly with the first straight line.
The sprinkler head according to claim 4, wherein the top end of the third convex portion includes a step that is bent in a direction farther away from the nozzle than a flat surface of the fourth convex portion.
The sprinkler head according to claim 4, wherein the deflector further has a third slit between the third convex portion and the fourth convex portion,
- wherein the third slit is inclined with respect to the first straight line, and
- wherein the width of the third convex portion decreases towards the top end.
The sprinkler head according to claim 4, wherein the deflector further has a fourth slit adjacent to the fourth convex portion, and
- wherein the circular-arc shaped edge of the fourth slit is in contact with the circumference of the circle together with the circular-arc shaped edge of the first slit and the circular-arc shaped edge of the second slit.
The sprinkler head according to claim 1, wherein the width of the first convex portion increases from the top end thereof towards the center of the deflector.
The sprinkler head according to claim 1, wherein the width of the second convex portion increases from the top end thereof towards the center of the deflector.
The sprinkler head according to claim 1, wherein a distance between the circular-arc shaped edge of the first convex portion and the circular-arc shaped edge of the first slit is 1 to 2 mm.
The sprinkler head according to claim 2, wherein a dimension obtained by subtracting a length of the second convex portion from a radius difference between the outer circumference circle of the deflector and the circle with which the circular-arc shaped edge of the second slit is in contact is the same as the length of the second convex portion.
The sprinkler head according to claim 2, wherein a dimension obtained by subtracting a length of the second convex portion from a radius difference between the outer circumference circle of the deflector and a circle with which the circular-arc shaped edge of the second slit is in contact is greater than the length of the second convex portion.
The sprinkler head according to claim 4, wherein a distance between the circular-arc shaped edge of one of the first slits and the circular-arc shaped edge of the other first slit is greater than a distance between the circular-arc shaped edge of the first slit and the circular-arc shaped edge of the neighboring second slit.
The sprinkler head according to claim 5, wherein the step is formed as a slope face, and
- wherein the slope face is located outside the outer circumference circle of the deflector.
Dependencies are inferred from the claim text.