JP2014094324A - Sprinkler nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprinkler nozzle capable of sprinkling widely and uniformly in lateral or vertical direction.SOLUTION: A sprinkler nozzle includes a connection port for water introduction, an internal passage through which water taken in through the connection port passes and a large number of discharge outlets 16 formed in a shower plate 12 at the tip of the passage. The shower plate 12 has such a shape that the central part is swollen forward and curved in the X direction. With a group of a plurality of the discharge outlets 16 lined up in the X direction and opened as one stage, two or more stages are formed in the Y direction perpendicular to the X direction. The discharge outlets 16 of different stages are opened so as to be deviated mutually in the X direction, and discharge outlets 16 of a specified standard stage are formed so as to be directed nearly forward; and discharge outlets of other stages are inclined in the Y direction to the standard stage. Water discharged from individual discharge outlets 16 line up in the X direction almost in the form of one row at a specified distance from the shower plate 12.

Description

  The present invention relates to a watering nozzle that is mainly used for horticulture, agriculture, cleaning, etc. at home and is connected to the tip of a water supply facility such as a water supply via a hose, and in particular, the structure of the outlet of the watering nozzle About.

  At home, watering nozzles that are attached to the tip of a hose and can be arbitrarily switched between watering and water stopping are widely used for gardening, agriculture, cleaning, and the like. Such a watering nozzle receives water from a water supply facility such as a water supply via a hose and sprays water from a discharge port formed at the tip.

A conventional watering nozzle has a substantially cylindrical grip portion extending upward from a base end portion connected to a hose, and a substantially cylindrical nozzle portion extending forward from a substantially upper end of the grip portion. As a nozzle body formed in a bent shape such as an L shape, a dogleg shape or a pistol shape.
The discharge port formed at the tip of the nozzle part is a bar-shaped water discharge consisting of a single round discharge port, as well as a number of small discharges arranged radially on the shower plate 19 as shown in FIGS. There have been various types of water discharge, such as a shower-like diffuse water discharge comprising an outlet 20.

The watering nozzle for home use was required to be able to uniformly spray water in the left and right wide areas in gardening, watering in agriculture, cleaning of wall surfaces, and the like.
However, rod-like water discharge is inconvenient for use in horticulture, agriculture, and cleaning because the range that can be sprayed at a time is narrow.
Further, even in the shower-like diffuse water discharge, as shown in FIG. 12 (d), water does not hit between the landing points of the respective discharge water indicated by arrows, so that unevenness is generated and the force for sweeping dirt is weak, And there was a problem that cleaning would be insufficient.

In Patent Document 1, as shown in FIG. 13, in a shower head used for cleaning, there is one in which a horizontally elongated slot 22 is formed on a screen 21 to discharge water that diffuses in the left-right direction.
However, in the shower head of Patent Document 1, water is sprayed in a shape that widens after discharge, the stress applied to the water inside the shower head is released after discharge, and is a water discharge shape that strongly receives air resistance. For this reason, water started to split 100 mm away from the discharge port, and it tended to be dispersed in a mist form 1000 mm away. This shower head has a problem that the striking force at the landing point of water is small and the dirt cannot be sufficiently washed away.

JP 2011-24715 A

  This invention is made | formed in order to solve the said problem, and makes it a subject to provide the watering nozzle which can spray water with the cleaning effect in the right-and-left or the up-down direction which has the effect which flushes away dirt.

In the present invention, means for solving the above problems are as follows.
A first aspect of the invention is a watering having a connection port for introducing water, an internal channel through which water taken from the connection port passes, and a number of discharge ports formed in a shower plate at the tip of the channel. A nozzle, wherein the shower plate is formed in a shape in which a central portion bulges forward and curves in the X direction, and a plurality of the discharge ports arranged in the X direction are opened as one stage and orthogonal to the X direction. A plurality of stages are formed in the Y direction, and the outlets of the different stages are shifted from each other in the X direction, and the outlets of a predetermined reference stage are formed substantially forward, The water discharged from each discharge port is arranged in a line in the X direction at a predetermined distance from the shower plate by inclining the discharge port of the step in the Y direction toward the reference step side. .

  According to a second aspect of the present invention, the shower plate is formed in a bowl-shaped curved surface in which the vicinity of the center in the Y direction is retreated and both ends in the Y direction are advanced.

  A third invention is characterized in that the shower plate is formed by connecting an inverted conical circumferential surface shape, a cylindrical circumferential surface shape, and a conical circumferential surface shape in order in the Y direction.

  A fourth aspect of the present invention is a watering having a connection port for introducing water, an internal channel through which water taken from the connection port passes, and a number of discharge ports formed in the shower plate at the tip of the channel The nozzle is a nozzle, and the shower plate is formed by arranging a plurality of discharge ports arranged in the X direction as one stage, and forming a plurality of stages in the Y direction orthogonal to the X direction. It has a cylindrical peripheral surface shape, the plurality of steps are formed by shifting respective curved surfaces in the X direction, and the discharge ports of the steps adjacent in the Y direction are opened in a staggered arrangement in which they are shifted in the X direction. Therefore, the water discharged from each discharge port is scattered within a slightly wide belt-like range extending in the X direction at a predetermined distance from the shower plate.

  According to a fifth aspect of the present invention, the X direction is a left-right direction when the watering nozzle is directed forward, and the Y direction is a vertical direction when the watering nozzle is directed forward.

  In a sixth aspect of the present invention, the X direction is a vertical direction when the watering nozzle is directed forward, and the Y direction is a left-right direction when the watering nozzle is directed forward.

  The seventh invention is characterized in that the mounting angle of the shower plate can be changed in the upper, lower, left and right planes.

According to the first invention, the shower plate is formed in a shape in which the central portion bulges forward and curves in the X direction, and a plurality of the discharge ports arranged in the X direction are opened as one stage. A plurality of stages are formed in the Y direction orthogonal to the direction, and the outlets of different stages are opened while being shifted from each other in the X direction, and the outlets of a predetermined reference stage are formed facing substantially forward. At the same time, by tilting the outlets of the other stages in the Y direction to the reference stage side, the water discharged from the outlets is arranged in a line in the X direction at a predetermined distance from the shower plate. , Water spraying can be performed without any unevenness in a wide range in the X direction.
Moreover, many discharge ports can be formed in the small area | region of a shower board, and water can be discharged to the wide range of a X direction.

  According to the second invention, the shower plate is formed in a bowl-shaped curved surface in which the vicinity of the center in the Y direction is retreated and the both end sides in the Y direction are advanced, so that there is no unevenness in a wide range in the X direction. Some watering can be done.

  According to the third invention, the shower plate is formed by sequentially connecting an inverted conical circumferential surface shape, a cylindrical circumferential surface shape, and a conical circumferential surface shape in the Y direction. There is no unevenness in a wide range of directions, and watering with water can be performed.

According to a fourth aspect of the present invention, the shower plate is formed by arranging a plurality of the discharge ports arranged in the X direction as one step, and forming a plurality of steps in the Y direction orthogonal to the X direction. The steps are formed in a cylindrical peripheral surface shape, and the plurality of steps are formed by shifting respective curved surfaces in the X direction, and the discharge ports of the steps adjacent in the Y direction are staggered in the X direction. By being opened, the water discharged from each discharge port is scattered within a slightly wide band-like range extending in the X direction at a predetermined distance from the shower plate, and thus in a wide range in the X direction. There is no unevenness and watering can be performed.
Moreover, many discharge ports can be formed in the small area | region of a shower board, and water can be discharged to the wide range of a X direction.

  According to the fifth invention, the X direction is the left-right direction when the watering nozzle is directed forward, and the Y direction is the up-down direction when the watering nozzle is directed forward, so that the left-right direction is wide. Water can be sprayed evenly over the range.

  According to the sixth invention, the X direction is the vertical direction when the watering nozzle is directed forward, and the Y direction is the left-right direction when the watering nozzle is directed forward, so that the vertical direction is wide. Water can be sprayed evenly over the range.

  According to 7th invention, the user can change the angle of the water discharge range according to a use by having made it possible to change the attachment angle of the said shower board within an up-down and left-right plane.

It is a back perspective view of the watering nozzle which concerns on 1st embodiment of this invention. It is a figure which shows the watering nozzle, (a) is a top view, (b) is a side view, (c) is a front view. It is a longitudinal cross-sectional view of the watering nozzle. It is a figure which shows the inner shower board of the watering nozzle, (a) is a front view, (b) is a side view, (c) is a top view, (d) is a rear view. It is a figure which shows the inner shower board, (a) is the sectional view on the AA line in FIG. 4 (a), (b) is the sectional view on the BB line in FIG.4 (d), (c) is Front perspective view, (d) is a rear perspective view. (A) is partial sectional explanatory drawing of the same shower board, (b) is explanatory drawing of the discharge outlet of the same shower board. It is a figure which shows the inner shower board of the watering nozzle which concerns on 3rd embodiment of this invention, (a) is a front view, (b) is a perspective view, (c) is a horizontal sectional view. It is a front view which shows the inner shower board of the watering nozzle which concerns on the other example of 3rd embodiment of this invention. (A) is explanatory drawing of the curved shape of the inner shower board of 1st embodiment, (b) is explanatory drawing of the curved shape of the inner shower board of 2nd embodiment. (A) is explanatory drawing of the curved shape of the inner shower board of 3rd embodiment, (b) is explanatory drawing of a comparative example. (A)-(e) is explanatory drawing which shows the modification of the discharge outlet of the watering nozzle of this invention, respectively. It is a figure which shows the shower plate of the conventional watering nozzle, (a) is a front view, (b) is sectional drawing, (c) is a perspective view, (d) is explanatory drawing of watering. It is a figure which shows the discharge outlet of the other conventional watering nozzle, (a) is a front view, (b) is a longitudinal cross-sectional view, (c) is a perspective view, (d) is a horizontal sectional view.

Hereinafter, the watering nozzle which concerns on 1st embodiment of this invention is demonstrated.
This watering nozzle 1 is an instrument that performs watering by being connected to the tip of a water supply facility such as water supply via a hose in horticulture, agriculture, cleaning, and other uses. It is.

As shown in FIGS. 1 and 2, the watering nozzle 1 includes a grip portion 3 formed in a substantially cylindrical shape extending upward from a base end portion 3 a that is connected to a hose or the like to form a connection port 2 for introducing water. The grip portion 3 includes a nozzle portion 4 that extends forward from the upper end of the grip portion 3 and is formed with water spouts 5a, 5b, and 5c at the tip thereof. The nozzle body 6 is formed in a bent shape that is bent at a continuous portion of the portion 4.
In the present specification, front and rear in the description of the nozzle part 4 mean the extending direction of the nozzle part 4, front means the water spout 5a, 5b and 5c side of the nozzle part 4, and rear means the grip part 3 side. To do. Further, in the description of the grip part 3, “up and down” means up and down with respect to the ground in a state where the nozzle part 4 is parallel to the ground and the connection port of the grip part 3 is directed to the ground side. The upper side, that is, the nozzle portion 4 side means the lower side, and the lower side means the ground side, that is, the connection port 2 side.
As shown in FIG. 3, a water flow path 10 extending from the connection port 2 to the water spray ports 5 a, 5 b, and 5 c is formed inside the nozzle body 6.

As shown in FIG. 3, the nozzle body 6 is formed by connecting a hose nipple 8 and a water discharge head 9 to a bent water pipe 7 and assembling a plurality of covers covering the outer periphery. It may be formed into a shape.
POM (polyacetal), ABS (acrylonitrile butadiene styrene copolymer) or the like can be used as the material for the water flow pipe 7, and POM is particularly preferable because of its excellent yield strength and friction durability. Therefore, POM is adopted in this embodiment.

The grip part 3 is formed in a substantially cylindrical shape extending upward from the base end part 3a toward the nozzle part 4, and can be gripped and handled by the user.
In the base end portion 3a of the grip portion 3, a concavity and convexity and an O-ring for connecting to a receiving tool (not shown) attached to the hose are provided on the outer peripheral surface, and the connection for introducing water from the water supply facility to the center A hose nipple 8 having an opening 2 is attached below the water flow pipe 7.
The orientation of the grip portion 3 may be perpendicular to the extending direction of the nozzle portion 4, but as shown in FIG. And may extend in a crossing direction.
As shown in FIG. 3, the nozzle portion 4 is formed in a substantially cylindrical shape extending from the upper end of the grip portion 3 to the front (the water spout side of the nozzle portion 4).

As shown in FIG. 3, the watering nozzle 1 includes a water stop valve that switches between water flow and water stop in the flow path of the water flow pipe 7, and a flow rate adjustment valve that increases and decreases the flow rate of water passing through the flow path. have.
The water stop valve is provided on the upstream side of the flow rate adjustment valve, and has a water stop valve body 30 disposed in the flow path 10 on the grip portion 3 side of the water flow pipe 7. The water stop valve body 30 is formed in a covered cylindrical shape inscribed in the water flow pipe 7, and a protruding valve body portion 30a is formed on the cover. O-rings 30c and 30c are provided at two locations on the outer peripheral surface of the water stop valve body 30 to prevent water from flowing through the outer periphery of the water stop valve body 30 and to pass through the outer peripheral surface above the O ring 30c. The water port 30b is formed. The water supplied from the base end (downward) of the water flow pipe 7 passes through the inside of the water stop valve body 30, flows out to the outer periphery from the water flow port 30 b, and flows downstream.

  The valve body portion 30 a of the water stop valve body 30 is formed with a larger diameter than the water stop valve seat 7 a provided in the water flow pipe 7 and is interposed between the hose nipple 8 and the water stop valve body 30. 31 urges the water stop valve seat 7a to close the flow path 10 (water stop state). When the valve body 30a is separated from the water stop valve seat 7a against this urging force, the flow path 10 is opened and water passes through (water passing state).

As shown in FIGS. 2 and 3, a water stop operation lever 32 is attached in front of the grip portion 3 in order to operate the water stop valve body 30. The water stop operating lever 32 is attached to the lower portion of the grip portion 3 with the lower end as a fixed end, and the upper end is a free end. Therefore, when the user holds the grip portion 3 with his / her hand, the lower end becomes the fixed end. It can be rotated in the direction.
As shown in FIG. 3, the water flow pipe 7 has an opening 7 b on the front surface of the grip portion 3 side portion. A valve opening / closing arm 33 having an L-shaped vertical section contacts the water stop operating lever 32 at one end, contacts the water stop valve body 30 at the other end, and passes through the water pipe 7 with an L-shaped bent portion as a fulcrum. When the user grasps the water stop operation lever 32, the water stop valve body 30 is moved through the valve opening / closing arm 33 against the urging force of the coil spring 31. It can be separated from 7a and can be in a water-permeable state.
Since the opening 7b of the water flow pipe 7 is always located between the two O-rings 30c and 30c of the water stop valve body 30, water does not leak from the opening 7b to the outside of the water flow pipe 7.

A flow rate adjusting valve capable of adjusting the amount of water spray is provided in the flow path 10 at the bent portion of the water flow pipe 7 on the downstream side of the water stop valve.
As shown in FIG. 3, the flow rate adjusting valve is disposed in the flow path, and rotates to increase or decrease the flow rate of water, and the flow rate adjusting valve body 34 is interlocked with the flow rate adjusting valve body 34 and is gripped. 3 and a flow rate operating member 35 that protrudes from the rear upper part of the head 3 and is rotated by the thumb in the left-right direction.
The flow rate adjusting valve body is formed in a covered cylindrical shape whose lower end is always open to the flow path 10 of the grip portion 3, and a notch for flow rate adjustment is provided on the peripheral surface.
In this flow rate adjusting valve, the amount of water spray can be adjusted by increasing or decreasing the area where the notch formed in the flow rate adjusting valve body 34 and the flow path 10 of the nozzle portion 4 match.

As shown in FIG. 2C, an outer shower plate 11 is attached to the tip of the flow path of the nozzle body 6, and an inner shower plate 12 is attached to the center of the outer shower plate 11.
As shown in FIG. 3, the flow path 10 reaches the switching port 13 near the tip of the nozzle portion 4, and the first outer flow path 14 b and the second outer flow path 14 c that communicate with the outer shower plate 11 downstream of the switching port 13. And an inner flow path 15 communicating with the inner shower plate 12. The water discharge head 9 including the outer shower plate 11 and the inner shower plate 12 moves back and forth around the nozzle body 6 around the screw, and any one of the first outer channel 14b, the second outer channel 14c, and the inner channel 15 is selected. By connecting to the upstream switching port 13, the user can spray water from the water spray port 5 b of the outer shower plate 11, water spray from the water spray port 5 c of the outer shower plate 11, and water spray from the inner shower plate 12. It is possible to switch between water sprinkling from the water outlet 5a.
The outer shower plate 11 has a wide annular front end surface, and a plurality of water spouts 5b and 5c are formed radially on the front end surface.

As shown in FIG. 4A, the inner shower plate 12 has a circular tip surface in front view.
As shown in FIG.4 (c), as for the front end surface of the inner shower board 12, the center part bulges forward and is curving in the left-right direction. Further, as shown in FIG. 4 (b), the central portion of the front end surface of the inner shower plate 12 is retreated in the vicinity of the vertical direction, and the upper and lower sides thereof are advanced. It is formed in a three-dimensional shape (see FIG. 9A).

The material of the inner shower plate 12 may be any material as long as it does not break due to an impact such as dropping and has high fluidity during molding, and metals such as stainless steel and various resins can be used.
If the inner shower plate 12 is formed by punching out the metal, the surface accuracy is rough at the fractured portion, and the direction of water discharge may not be stabilized as intended. Further, a post process such as bending or drawing is required to adjust the water discharge direction, and the shape of the discharge port 16 may be deformed during the post process.
Therefore, it is preferable to use a resin. It is particularly preferable to use POM (polyacetal) because it is excellent in fluidity during molding, deformation prevention due to internal pressure, mechanical properties, chemical resistance, fatigue resistance, and creep properties.

As shown to Fig.4 (a), the water spray port 5a of an inner shower board is made into the 1 step | paragraph which opened the some small discharge port 16 arranged in the left-right direction, and 5 steps | paragraphs are formed up and down. As for the number of discharge ports 16 per stage, five discharge ports 16 are formed at the third level from the top, and four discharge ports 16 are formed at the other levels.
Further, as shown in FIG. 4A, the discharge ports 16 of different stages are formed at positions shifted from each other in the left-right direction, and other discharge ports are located directly above or directly below one discharge port 16. 16 is not arranged.

As shown in FIG. 6B, each discharge port 16 has an outer outlet hole diameter DO set to 0.7 mm.
The hole diameter DO at the outer outlet is preferably set to 0.2 to 2.5 mm.
If the hole diameter DO is smaller than 0.2 mm, the discharged water may be dispersed by the air resistance at a flight distance of 500 mm or more from the inner shower plate 12, and the landing point may deviate from the target. More preferably, the hole diameter DO is 0.5 mm or more.
Further, if the hole diameter DO is larger than 2.5 mm, the flow rate of the discharged water is lowered, it becomes difficult to spray water to a distant point, and the water pressure is also lowered, so that the dirt cannot be sufficiently washed away. The pore diameter DO is more preferably 2.0 mm or less, and particularly preferably 1.0 mm or less.
Within the range of 0.2 to 1.0 mm, if the hole diameter DO is reduced, the water shape becomes slightly mist-like and suitable for watering applications, and if the hole diameter DO is increased, it is less susceptible to the effects of air resistance. Suitable for.

Also, as shown in FIGS. 4, 5B, and 6, the inner inlet DI of each outlet 16 is formed to have a larger diameter than the outer outlet DO, and each outlet 16 is formed in a tapered surface shape. Yes.
Since each discharge port 16 is formed in a tapered surface shape, the mold used at the time of molding the inner shower plate 12 can be easily pulled out to the inner surface side (upstream side). As shown in FIG. 6A, the angle θ1 of the tapered surface is not particularly limited as long as the mold can be easily pulled out, but the angle between the opposing tapered surfaces is more preferably 20 to 30 degrees. In the first embodiment, the angle is set to 20 degrees.
In addition, the inner shape of the tapered surface of each discharge port 16 that does not appear in the cross section of FIG. 6 is formed in a symmetric (symmetric) shape within a range of 360 degrees with respect to the central axis of each discharge port 16.
Thereby, the water shape of the discharged water is not disturbed, and water can be discharged in the direction of the central axis.

As shown in FIG. 5B, since the inner shower plate 12 is formed to bend in the left-right direction, each discharge port 16 in the same stage is directed so that the discharged water is diffused in the left-right direction. It has been.
In addition, as shown in FIG. 6A, in each stage, it is preferable that the left and right outermost walls of the discharge ports at the left and right ends be inclined in parallel or inward with respect to the back line L in the front-rear direction. . This is because if the outermost wall is inclined outward from the rear line L in the front-rear direction, it is difficult to pull out the mold used when the inner shower plate 12 is molded.
In order to pull out the mold (so-called draft), it is preferable that the inclination θ2 of the outermost wall with respect to the back line L in the front-rear direction is inclined inward by 0.5 degrees or more, while water is discharged as described above. In order to diffuse in the left-right direction, the inclination θ2 is preferably 2 degrees or less. In the first embodiment, the inclination θ2 is set to 1 degree.

  As shown in FIGS. 4B and 5A, in the inner shower plate 12, the discharge port 16 is inclined downward at a relatively steep angle in the first stage from the top. In the second stage, the discharge port 16 is inclined downward at a relatively gentle angle. In the third stage, the discharge port 16 faces in the horizontal direction. In the fourth stage, the discharge port 16 is inclined upward at a relatively gentle angle. In the fifth stage, the discharge port 16 is inclined upward at a relatively steep angle.

Regardless of whether they are the same stage or different stages, it is necessary to provide a distance between the discharge ports 16 so that the discharged water does not attract each other. Is preferably 1.8 mm or more. If the distance between the central axes is less than 1.8 mm, an attractive force due to the potential of water is generated, and the discharged water merges and does not land on the target point. In the first embodiment, the shortest distance between the central axes of the discharge ports (the distance between the discharge ports closest to the upper and lower adjacent stages) Min (see FIG. 8) is 1.8 mm.
In addition, the distance between adjacent discharge ports on the same stage is all 2.7 mm.

Moreover, as shown to Fig.6 (a), the curve of the left-right direction of the inner shower board 12 is formed in the substantially circular arc shape. When viewed in a horizontal cross section as shown in FIG. 6A, the center O of the outer arc surface of the inner shower plate 12 and the center O of the inner arc surface coincide with each other, and all of the discharge ports 16 in the same stage. The center axis passes through the center O.
By forming in such a uniform shape, there is no unevenness or unevenness of the water amount or water shape of each discharge port, and water can be discharged to a desired point.

With the above configuration, as shown in FIG. 9A, the water discharged from the discharge port of the inner shower plate 12 is landed in a line in the left-right direction at a point about 1000 mm away from the inner shower plate 12. To do.
Water is discharged in a range of about 400 mm in the left-right direction and about 2 mm in the up-down direction as a whole.
At this time, the distance at the landing point of the water discharged from the two discharge ports 16 adjacent in the left-right direction in the same step is about 100 mm. Moreover, the distance between the landing points of water discharged from the two closest discharge ports of the upper and lower adjacent steps is about 20 mm.

The distance between the nearest landing points is about 20 mm. Since the landed water is deformed by the momentum, the gap is filled, so that a continuous wave of water is formed at the landing point.
Since the discharged water is a thin rod-shaped water discharge until landing, it hardly receives air resistance and hardly deviates from the target or decelerates. Therefore, the wave of water formed by water spraying from the inner shower plate 12 has a momentum to sweep away dirt and the like over a wide range in the left-right direction.
Thereby, in the watering nozzle 1 of 1st embodiment, while being able to wash away the stain | pollution | contamination of the wide range of the left-right direction without unevenness in cleaning etc., watering without unevenness also becomes possible also in watering etc.

  Moreover, the diameter of the front end surface of the inner shower plate 12 is about 20 mm. In the first embodiment, a large number (21 in the first embodiment) of the discharge ports 16 are formed in such a small region, and a horizontal line. The water spray nozzle 1 can be reduced in size.

<Second embodiment>
Below, the watering nozzle 1 of 2nd embodiment is demonstrated. In addition, description is abbreviate | omitted about the structure which is common in 1st embodiment.
In 2nd embodiment, as shown in FIG.9 (b), the front end surface of the inner shower board 17 is made to continue the curved surface of an inverted conical circumferential surface shape, a cylindrical circumferential surface shape, and a conical circumferential surface shape in order from the top. It is formed.

The upper portion 17a of the inner shower plate 17 is formed in the shape of an inverted conical circumferential surface whose lower diameter is reduced.
A central portion 17b in the vertical direction of the inner shower plate 17 is formed in a cylindrical peripheral surface having the same diameter as the lower end portion of the upper portion 17a.
The lower part 17c of the inner shower plate 17 is formed in a conical circumferential surface shape whose upper side is reduced in diameter. The upper end part of the lower part 17c is formed in the same diameter as the cylinder of the center part 17b.
As shown in the drawing, the front end surface of the inner shower plate 17 is formed in a shape obtained by cutting out the side surface of the hourglass shape as a whole.

Also in the second embodiment, the inner shower plate 17 has a plurality of small discharge ports 16 arranged in the left-right direction and opened as one step, and a plurality of steps are formed vertically.
In FIG. 9B, three stages are formed in the upper and lower stages, and the discharge ports 16 per stage are formed with five discharge ports 16 in the second stage from the top, and four discharge ports 16 in the other stages. Is formed.
Further, the discharge ports 16 in different stages are formed at positions shifted from each other in the left-right direction, and no other discharge port 16 is disposed immediately above or directly below one discharge port 16.

  Moreover, it is necessary to provide a distance between the discharge ports 16 so that the discharged water does not attract each other regardless of whether they are the same step or different steps. The shortest distance between the central axes of the discharge ports 16 (the distance between the discharge ports closest to the upper and lower adjacent stages) Min (see FIG. 8) was 2.0 mm.

As shown in FIG. 9B, the first-stage discharge port 16 from the top is formed in the upper portion 17a having an inverted conical circumferential surface, and the second-stage discharge port 16 is formed in the central portion 17b having a cylindrical peripheral surface shape. The third-stage discharge port 16 is formed in a conical circumferential lower portion 17c.
Therefore, the first-stage discharge port 16 is inclined downward, the second-stage discharge port 16 is directed in the horizontal direction, and the third-stage discharge port 16 is inclined upward.

In the second embodiment, with the above configuration, as shown in FIG. 9B, the water discharged from the discharge port 16 of the inner shower plate 17 is at a point about 1000 mm away from the inner shower plate 17 in the left-right direction. To land in a line.
Since the landing water is deformed with the momentum, the gap is filled, so that a wave of water that is continuous in the left-right direction is formed at the landing point.
Thereby, in the watering nozzle of the second embodiment, dirt in a wide range in the left-right direction can be washed away without unevenness in cleaning or the like, and watering without unevenness can be performed even in watering or the like.

<Third embodiment>
Below, the watering nozzle 1 of 3rd embodiment is demonstrated. In addition, description is abbreviate | omitted about the structure which is common in 1st embodiment.
Also in the third embodiment, as shown in FIG. 7A, the front end face of the inner shower plate 18 has a plurality of discharge ports 16 arranged in the left-right direction and opened in one step, and a plurality of steps are provided in the up-down direction. ing. In FIG. 7, five stages are formed in the upper and lower sides, and the number of discharge ports 16 per stage is five at the third stage from the top, which is the center, and four outlets 16 are provided at the other stages. It is formed one by one.
Further, as shown in FIG. 8, three stages are formed in the upper and lower sides, and the number of discharge ports 16 per stage is four in the center, and four discharge ports 16 are formed in the second stage from the top. Three discharge ports 16 may be formed.

  In the third embodiment, as shown in FIGS. 7B, 7C, and 10A, each step is formed of a curved surface having a cylindrical circumferential surface, and the curved surfaces of the plurality of steps are left and right. The inner shower plate 18 is formed by shifting in the direction.

As shown in FIG. 10A, each step is formed of a cylindrical circumferential curved surface, and the curved surfaces of each step are formed to be shifted from each other in the left-right direction.
In the two adjacent stages, the lower stage is shifted to the right in FIG. 10A by a predetermined length from the upper stage, and this shift amount is equal in all the step portions.

Further, the arrangement of the discharge ports 16 in the inner shower plate 18 is such that the discharge ports 16 adjacent to each other in the vertical direction are formed so as to be shifted in the left-right direction, and one level between them (for example, the first level from the top) And the third stage) are formed in a staggered arrangement in which the positions of the discharge ports 16 coincide with each other in the left-right direction.
Since the curved surfaces of the respective steps are also shifted in the left-right direction as described above, the angles of the upper and lower discharge ports 16 formed at the same position in the left-right direction are the same as described above. The left and right are different.

In the third embodiment, with the above configuration, the water discharged from the discharge port 16 of the inner shower plate 18 is within a slightly wide belt-like range extending in the left-right direction at a point about 1000 mm away from the inner shower plate 18. Land.
The landing positions of water from the respective discharge ports 16 have a gap in the left-right direction and a slight gap in the up-down direction or the front-back direction, and land in a slightly wide belt-like range as a whole.
Since the landing water is deformed with the momentum, the gap is filled, so that a wave of water that is continuous in the left-right direction is formed at the landing point.
Thereby, in the watering nozzle 1 of 3rd embodiment, while being able to wash away the stain | pollution | contamination of the wide range of the left-right direction without unevenness in cleaning etc., watering without an unevenness in watering etc. becomes possible.

When the discharge ports 16 of the different stages are shifted in the left-right direction without shifting the curved surfaces of the respective stages as in the inner shower plate 23 of the comparative example of FIG. 10B, uniform watering is performed in the width direction. In order to make it possible, a large area is required in the left-right direction of the inner shower plate, and a large area is also required in the vertical direction of the inner shower plate in order to maintain a distance that does not attract the discharged water.
On the other hand, in the watering nozzle 1 of the third embodiment, the curved surfaces of the respective stages are shifted in the left-right direction as shown in FIG. Even if formed, water can be sprayed over a wide range in the left-right direction due to the difference in the direction of the discharge port 16.
Therefore, as compared with the comparative example of FIG. 10B, a large number of discharge ports can be formed in a small area of the inner shower plate 18 to discharge water over a wide range, and the watering nozzle 1 can be downsized.

<Other variations>
The number of discharge ports 16 formed on the inner shower plate and the number of discharge ports 16 per step may be appropriately changed according to the size of the inner shower plate and the required watering range.
In the first embodiment, the number of stages is five and four discharge ports 16 are formed per stage (five only in the third stage), and water can be sprayed in the range of 400 mm in the left-right direction. However, the number of stages is seven. If four discharge ports 16 are formed per stage (5 only in the fourth stage), water can be sprayed in the range of 560 mm in the left-right direction.
Further, the number of stages of the discharge ports 16 may be an even number.

In the first embodiment and the second embodiment, the third-stage discharge port is directed horizontally, the first and second-stage discharge ports are tilted downward, and the fourth and fifth-stage discharge ports are tilted upward. However, the second-stage discharge port may be inclined in the horizontal direction, the first-stage discharge port may be directed downward, and the third to fifth-stage discharge ports may be inclined upward. Further, the fourth-stage discharge port may be directed in the horizontal direction upside down from this example.
Furthermore, the first-stage discharge port may be directed horizontally and the second to fifth stages may be inclined upward. Further, the fifth stage discharge port may be directed in the horizontal direction upside down from this example.

Further, the shape of each discharge port 16 is not limited to the tapered surface shape as shown in FIG. 6B, and various shapes can be adopted.
For example, as shown in FIG. 11 (a), the diameter is reduced from the inner inlet to the outer outlet in common with FIG. 6 (b), but the inner wall protrudes from FIG. You may form in a concave shape.
Also, as shown in FIG. 11 (b), it is the same as FIG. 6 (b) in that the diameter is reduced from the inner inlet to the outer outlet, but the inner wall is recessed and the flow channel swells compared to FIG. 6 (b). You may form in a flow-path shape.

Further, as shown in FIG. 11C, a large-diameter tapered surface formed at the inner inlet and a small-diameter tapered surface formed at the outer outlet are formed in a stepped shape connected by a steep tapered surface. May be.
Furthermore, as shown in FIG. 11 (d), the tapered surface formed from the inner inlet may be formed in a shape connected to a cylindrical flow path that does not reduce the diameter.
Moreover, as shown in FIG.11 (e), the cylindrical flow path formed from the inner side entrance may be formed in the shape connected to a taper surface from the middle.
In addition, a cylindrical shape with a constant channel diameter from the inner inlet to the outer outlet, a shape in which the diameter of the channel gradually decreases, a cylindrical part with a constant diameter and a part with a gradually decreasing diameter, The shape which connected can be employ | adopted.

In the first embodiment and the second embodiment, the inner shower plates 12, 17, 18 that can spray a wide range in the left-right direction are formed. However, if necessary, an inner shower plate that can spray a wide range in the vertical direction is formed. May be.
In this case, the inner shower plate is formed in a shape in which the central portion bulges forward and curves in the vertical direction, and a plurality of (for example, four) discharge ports 16 arranged in the vertical direction as one row, A plurality of rows (for example, 5 rows) are formed in the left-right direction. The discharge ports 16 at different stages are formed so as to be shifted from each other in the left-right direction.
In addition, the discharge ports 16 in the center row are directed in a direction without inclination in the left-right direction, and the discharge ports 16 in the left and right rows are inclined to the center row side (in the left-right direction).
Thereby, the water discharged from each discharge port 16 can be arranged in a line in the up and down direction at a predetermined distance from the inner shower plate, and can spray water over a wide range.
Similarly, in the third embodiment, an inner shower plate that can spray a wide range in the vertical direction may be formed.

Moreover, you may enable it to water the wide range of a desired diagonal direction similarly to the above.
In addition, the inner shower plates 12, 17, and 18 of the first embodiment to the third embodiment are attached to the other parts of the watering nozzle so as to be rotatable in the vertical and horizontal planes, and the user can freely set the angle of the water discharge range It may be possible to change to

DESCRIPTION OF SYMBOLS 1 Sprinkling nozzle 2 Connection port 3 Grip part 4 Nozzle part 5a Sprinkling port 5a (inside shower plate) Sprinkling port 5c (outside shower plate) Sprinkling port 6 Nozzle body 7 Water flow pipe 7a Water stop valve Seat 7b Opening 8 Hose nipple 9 Water discharge head 10 Channel 11 Outer shower plate 12 Inner shower plate 13 Switching port 14b First outer channel 14c Second outer channel 15 Inner channel 16 Discharge port 17 Inner shower plate 17a Upper part 17b Central part 17c Lower portion 18 Inner shower plate 19 Shower plate 20 Discharge port 21 Screen 22 (Long hole-shaped) discharge port 23 Inner shower plate 30 Water stop valve body 30a Valve body portion 30b Water passage port 30c O-ring 31 Coil spring 32 Water stop operation lever 33 Arm for valve opening / closing 34 Flow adjustment valve body 35 Flow control member

Claims (7)

A watering nozzle having a connection port for water introduction, an internal channel through which water taken from the connection port passes, and a number of discharge ports formed in the shower plate at the tip of the channel,
The shower plate is formed in a shape in which a central portion bulges forward and curves in the X direction, and a plurality of the discharge ports arranged in the X direction are opened as a single step, and a plurality of the shower plates are arranged in the Y direction perpendicular to the X direction. And forming the steps of
The outlets of the different stages are opened while being shifted from each other in the X direction, and
By forming the discharge port of the predetermined reference level substantially forward, and by tilting the discharge port of the other step to the reference step side in the Y direction,
A watering nozzle, wherein water discharged from each discharge port is arranged in a line in the X direction at a predetermined distance from the shower plate.   The watering nozzle according to claim 1, wherein the shower plate is formed in a bowl-shaped curved surface in which the vicinity of the center in the Y direction is retreated and both end sides in the Y direction are advanced.   The watering nozzle according to claim 1, wherein the shower plate is formed by sequentially connecting an inverted conical circumferential surface shape, a cylindrical circumferential surface shape, and a conical circumferential surface shape in the Y direction. . A watering nozzle having a connection port for water introduction, an internal channel through which water taken from the connection port passes, and a number of discharge ports formed in the shower plate at the tip of the channel,
The shower plate is formed by arranging a plurality of the discharge ports arranged in the X direction as one step, and forming a plurality of steps in the Y direction orthogonal to the X direction.
Each step has a cylindrical peripheral surface shape, and the plurality of steps are formed by shifting each curved surface in the X direction,
By opening the outlets of the adjacent stages in the Y direction in a staggered arrangement shifted from each other in the X direction,
A watering nozzle characterized in that water discharged from each of the discharge ports is scattered within a slightly wide belt-like range extending in the X direction at a predetermined distance from the shower plate.   The X direction is a left-right direction when the watering nozzle is directed forward, and the Y direction is a vertical direction when the watering nozzle is directed forward. The watering nozzle according to one item.   The X direction is a vertical direction when the watering nozzle is directed forward, and the Y direction is a horizontal direction when the watering nozzle is directed forward. The watering nozzle according to one item.   The watering nozzle according to any one of claims 1 to 4, wherein an angle at which the shower plate is attached can be changed in the upper, lower, left, and right planes.

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