JP3961998B2 - Watering nozzle - Google Patents

Description

  The present invention relates to an improved technique for a watering nozzle that sprays water on a road surface or the like.

There are various types of watering nozzles, and for example, nozzles that spray water radially over the entire range of 360 ° with respect to the surface to be watered such as a road surface are known. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 62-34603

An outline of a conventional vehicle body structure according to Patent Document 1 will be described with reference to FIG.
5 (a) and 5 (b) are schematic views of a conventional watering nozzle, and are reprinted main portions of FIGS. 1 and 3 of Patent Document 1. FIG. (A) is sectional drawing of the conventional watering nozzle, (b) is an effect | action figure of the conventional watering nozzle. However, the sign has been changed.

  As shown in FIG. 5A, the conventional watering nozzle 100 has a nozzle pipe 103 attached to a rising pipe 102 branched from a water supply pipe 101, and surrounds the outer periphery of the nozzle pipe 103 above the nozzle pipe 103. The outer cylinder 104 is attached, and a disc-shaped adjustment lid 106 is screwed into the male screw 105 at the upper end of the nozzle tube 103, and a gap is formed between the inclined surface 107 at the upper end of the outer cylinder 104 and the inclined surface 108 at the lower end of the adjustment lid 106. This gap is used as a water spout 109.

  The outer cylinder 104 includes an annular deterring wall 113 in order to deter water flow from the inner lower space 111 to the upper space 112. In this way, the lower and upper spaces 111 and 112 can be communicated with each other by the small-diameter annular communication space 114. Reference numeral 115 denotes a connecting rod for the adjustment lid 106.

  The water sent from the water pipe 101 is filled in the order of the rising pipe 102 → the nozzle hole 121 of the nozzle pipe 103 → the water hole 122 → the communication groove 123 → the lower space 111 → the communication space 114 → the upper space 112, and finally By spraying from the sprinkling port 109, as shown in FIG.5 (b), it can sprinkle radially over the full 360-degree circumference | surroundings.

  By the way, in the conventional watering nozzle 100, the water channel from the nozzle hole 121 to the watering port 109 has a complicated and winding structure. Moreover, in this water channel, a small diameter water passage hole 122 perpendicular to the nozzle hole 121, a narrow communication groove 123 communicating with the water hole 122, a small diameter annular communication space 114, and a water spray port 109 composed of a small gap, There are many narrow holes and gaps.

In order to spray water uniformly with the watering nozzle 100, it is necessary to take care that foreign matters such as dust mixed in the water are not clogged in narrow holes or gaps. In particular, when water is collected and reused, there are many foreign substances mixed into the water. Therefore, it is conceivable to attach a high performance filter to the watering nozzle 100. However, it is not a good idea because the number of parts is large, the configuration is complicated and large, and the cost increases.
In addition, since the water channel is a complicated structure with a winding, the pressure loss of the water channel must be increased. As a result, the sprinkling momentum decreases, so there is room for improvement in order to spray water uniformly.

  It is an object of the present invention to provide a technique that can prevent clogging of a watering nozzle and always and sufficiently spray water on a surface to be sprayed.

The invention according to claim 1 is a nozzle body in which a plurality of injection holes for injecting water are arranged at equal intervals on the same arrangement circle, and on the center of the arrangement circle facing the openings of the plurality of injection holes. A watering nozzle is constituted by a combination structure of the watering guide member arranged, and the watering guide member is connected to a round bar-shaped shaft portion extending in the spraying direction along a plurality of spray holes and a tip of the shaft portion. A substantially T-shaped member in cross-sectional view composed of a disc-shaped cap portion orthogonal to the shaft portion, and the cap portion is a guide surface facing the openings of the plurality of injection holes, and on the side opposite to the guide surface and a flat non-guide surface, the contour of the boundary portion between the outer peripheral surface and the guide surface of the shaft portion is constituted by arcuate boundary surface curving toward the outer peripheral surface of the shaft portion to the guide surface, a plurality The injection hole is a screw hole, and the screw hole closing member constituting the injection hole is connected to the screw hole. It is composed of plugs that can be plugged in, the chamfered portion has a chamfered edge on the non-guide surface side, and the water sprinkling guide member is detachably attached to the nozzle body, and the non-guide surface is generally relative to the water spray surface. It is the same level and is installed on the road surface of a vehicle test course.

According to a second aspect of the present invention, in the first aspect, an installation hole is provided at right angles to the surface to be sprayed, an installation socket is attached to the installation hole, a nozzle holder is attached to the installation socket, and a flange of the nozzle holder is provided. A watering nozzle is attached by attaching the nozzle body to a part via a flange provided on the nozzle body.

In the invention according to claim 1, since the diameter of the injection hole can be set large, clogging of the injection hole can be prevented. Moreover, even if the diameter of the injection hole is large, water can be sprayed sufficiently uniformly on the surface to be sprayed. Furthermore, since the water channel from the water inlet to the water sprinkling part in the water spray nozzle has a very simple configuration, pressure loss in the water channel can be reduced. As a result, it is possible to sufficiently ensure the sprinkling momentum, so that the water can be sprayed sufficiently uniformly on the surface to be sprinkled. Furthermore, even if the non-guide surface is arranged at substantially the same level with respect to the surface to be sprayed such as a road surface to be sprinkled, water can be sprayed sufficiently uniformly on the surface to be sprayed.
Moreover, the range which sprays radially from a watering nozzle can be easily set by selecting a some injection hole suitably and closing with a closing member. For example, it can be switched appropriately between the full range of 360 ° and the half range of 180 °.
Furthermore, since the closing member is a screw-in type plug, the range of water spraying can be set very simply by screwing the plug into the injection hole. Further, since the plug is screwed into the screw hole, the water sealing performance of the closed injection hole can be almost completely ensured without using a seal member.
Furthermore, since the edge on the non-guide surface side in the casket portion is chamfered, a water spray nozzle is provided on the road surface, and when the non-guide surface is set at substantially the same level with respect to the road surface, the tire of the vehicle traveling on the road surface is sprinkled. Even if it hits the guide member, the impact on the tire can be more sufficiently mitigated.
And in this invention, since the inside of a watering nozzle can be easily cleaned by removing a nozzle main body, maintenance and inspection workability | operativity is good.
In addition to the above, in the present invention, since the surface to be sprayed is the road surface of the test course of a vehicle such as an automobile, the test course is covered with fog when the water spray W3 is affected by the wind. However, by adopting the watering nozzle of the present invention and disposing the non-guide surface at the same level with respect to the road surface, the watering is not easily affected by the wind, so the test course is prevented from being covered with fog. can do. As a result, the effect that the test can be carried out promptly is also exhibited.

In the invention according to claim 2, in addition to the effect of claim 1, the watering nozzle can be easily attached to the place where the water is sprayed via the installation socket and the nozzle holder.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a sectional view of a watering nozzle according to the present invention. The watering nozzle 10 has a combined structure of a nozzle body 20 that injects water supplied from a water supply source and a watering guide member 40 that guides the injected water to spray water radially over the entire range of 360 °.

  FIG. 2 is an exploded view of the watering nozzle according to the present invention and is shown corresponding to FIG. The nozzle body 20 includes a base portion 21 made of a bottomed cylindrical member, and a disc-shaped flange portion 31 integrally provided on the bottom portion 22 of the base portion 21 by welding.

The opened internal space 23 in the base 21 is a water supply chamber, and has an internal pipe thread 24 formed on the center CL in the opening. Hereinafter, the internal space 23 is referred to as a “water supply chamber 23”.
The bottom portion 22 of the base portion 21 is a flat plate portion having a predetermined thickness, and a flat outer end surface 25 is provided with a fixing female screw 26 formed on the center CL, and a plurality of (for example, two) injection holes formed on the periphery thereof. 27, 27 are provided. The outer end surface 25 includes a positioning recess 28 on the center CL. The positioning recess 28 is circular when viewed from the outer end surface 25 side, and is slightly recessed from the outer end surface 25 and has a flat bottom surface.

The plurality of injection holes 27, 27 are round holes arranged at equal intervals on the same (one) arrangement circle Ci. These injection holes 27, 27 are through holes that communicate with the water supply chamber 23 by penetrating the bottom 22, and these through holes are “screw holes” having internal threads.
The present invention is characterized in that the plurality of injection holes 27, 27 can be closed by a detachable closing member 29. That is, the plurality of injection holes 27, 27 are configured to be closed by the closing member 29. The closing member 29 is a plug that can be screwed into the injection holes 27, 27 including screw holes. Of the plurality of injection holes 27, 27, any injection hole 27 can be closed by the closing member 29.

The center of the array circle Ci is concentric with the center CL of the base 21, and the diameter of the array circle Ci is Di. The diameter Di is a size that is arranged adjacent to the edge of the positioning recess 28 so that the edges of the injection holes 27 are aligned. When the two injection holes 27 and 27 are provided, the interval at which the injection holes 27 and 27 are arranged is 180 °.
The piping internal thread 24 and the plurality of injection holes 27 and 27 are parallel to the center CL (center line CL) of the base portion 21.

The center of the flange 31 matches the center CL of the base 21. The flange portion 31 has a central through hole 32 and a plurality of surrounding screw insertion holes 33 with the center CL of the base portion 21 as a reference. The diameter of the central through hole 32 is a size that does not allow water sprayed from the plurality of spray holes 27, 27 to hit.
Further, the flange portion 31 is formed by forming a tapered surface 35 contiguous to the center CL of the base portion 21 and connected to the through hole 32 on a flat facing surface 34 facing the watering guide member 40. The tapered surface 35 is a concave (dish-shaped) tapered surface that is recessed from the facing surface 34, that is, a female tapered surface. The taper angle of the taper surface 35 is an obtuse angle α1.
Reference numeral 36 denotes a fitting projection for positioning the nozzle body 20.

The water sprinkling guide member 40 includes a round bar-shaped shaft portion 41 that extends in the spraying direction (the direction opposite to the nozzle body 20) along the plurality of spray holes 27, 27, and a shaft portion that is connected to the tip of the shaft portion 41. 41 is a substantially T-shaped member in cross-sectional view composed of a disc-shaped bristle portion (umbrella portion) 42 orthogonal to 41, that is, a member having an outer appearance generally “mushroom-shaped (butterfly-shaped)” or “trumpet-shaped”. The outer diameter of the cap part 42 is slightly larger than the diameter of the through hole 32.
Such a sprinkling guide member 40 is formed by forming a screw insertion hole 43 concentrically with the center CL of the base portion 21 at the center. By screwing the screw 44 through the screw insertion hole 43 into the fixing female screw 26, the water spray guide member 40 can be detachably attached to the nozzle body 20.

The watering guide member 40 will be described in detail.
The water spray guide member 40 is placed on the center CL of the base portion 21, that is, the center CL of the nozzle body 20 by fitting the shaft portion 41 to the positioning recess portion 28 and applying a flat end surface 45 to the bottom surface of the positioning recess portion 28. Accurate positioning is possible.

The bristle portion 42 has a flat guide surface 46 facing the openings of the plurality of injection holes 27, 27 and a flat non-guide surface 47 on the opposite side of the guide surface 46.
The guide surface 46 is a tapered surface that is concentric with the center CL of the base portion 21 and protrudes toward the shaft portion 41, that is, a male tapered surface. The taper angle of the guide surface 46 is an obtuse angle α2, preferably 145 ° to 155 °, more preferably 148 ° to 150 °.

  The taper angle α1 of the taper surface 35 on the nozzle body 20 side is slightly larger than the taper angle α2 of the guide surface 46 (α2 <α1), and is, for example, about 1 ° to 3 ° larger. By doing in this way, the jet water guided by the guide surface 46 can be smoothly radiated without being disturbed by the tapered surface 35. For example, when the taper angle α2 of the guide surface 46 is 148 °, the taper angle α1 of the taper surface 35 is set to about 150 °.

The contour of the boundary portion 48 between the outer peripheral surface 41a of the shaft portion 41 and the guide surface 46 has an arcuate boundary that forms a divergent shape while drawing a curve with a radius Rc from the outer peripheral surface 41a of the shaft portion 41 toward the guide surface 46. Surface. Hereinafter, the boundary portion 48 is referred to as an “arc-shaped boundary surface 48”.
The bristle portion 42 has a shape in which the edge 47a on the non-guide surface 47 side is chamfered. For example, as shown in FIG. 2, the edge 47a is a chamfered portion having a small arc-shaped cross section.

  When the nozzle body 20 and the watering guide member 40 are combined to form the watering nozzle 10 as shown in FIG. 1, the tapered surface 35 on the nozzle body 20 side and the guide surface 46 of the watering guide member 40 A gap Sp having a preset size is formed in between. The length of the shaft portion 41 is a size that secures a gap Sp having a certain size. Water can be sprayed from the gap Sp.

Next, the attachment structure of the watering nozzle 10 is demonstrated based on FIG.
In the place where water is sprayed, an installation hole 52 perpendicular to the surface to be sprayed 51 such as a road surface to be sprinkled is opened, an installation socket 53 is attached to the installation hole 52 at a predetermined height, and the installation socket 53 is attached to the tip. The nozzle holder 54 is attached by screwing.

The mounting structure is such that the flange portion 31 of the water spray nozzle 10 is overlapped with the flange 55 of the nozzle holder 54 from the water spray surface 51 side, fitted and positioned, and the flange 55 is flanged to the flange 55 by the screw 56 through the screw insertion hole 33. The watering nozzle 10 is attached to the nozzle holder 54 by screwing the portion 31.
The water supply chamber 23 is previously connected to a water source (not shown) by a piping member such as a flexible hose 61 screwed into the piping internal thread 24.

By doing in this way, the watering nozzle 10 can be easily attached to the place to sprinkle through the installation socket 53 and the nozzle holder 54.
In this case, the facing surface 34 of the flange portion 31 and the end surface 57 of the nozzle holder 54 are set at the same level (level) with respect to the surface to be sprayed 51 .

On the other hand, the non-guide surface 47 of the water sprinkling guide member 40 is set substantially at the same level with respect to the water sprayed surface 51. For example, as shown in FIG. 1, the non-guide surface 47 protrudes from the water spray surface 51 by a very small protrusion height Hp (about 0 to 2 mm).
In this way, the height of the water spray guide member 40, the thickness of the cover portion 42, and the thickness of the flange portion 31 may be set so that the non-guide surface 47 is substantially at the same level with respect to the water spray surface 51.
The non-guide surface 47 of the water spray guide member 40, the facing surface 34 of the flange portion 31, and the end surface 57 of the nozzle holder 54 are parallel to the water spray surface 51.

Next, the operation of the watering nozzle 10 having the above configuration will be described with reference to FIGS. FIG. 3 is an operation diagram showing a state where water is sprayed over the entire range with the watering nozzle according to the present invention.
The watering nozzle 10 is in a state in which the closing members 29 (see FIG. 1) are removed from all the injection holes 27, 27. For this reason, the high-pressure water W <b> 1 supplied from the water source to the water supply chamber 23 is jetted from all the jet holes 27, 27 toward the guide surface 46. The jetted water (jetted water) W2 flows along the outer peripheral surface 41a of the shaft portion 41 and collides with the arc-shaped boundary surface 48.

  As described above, the arcuate boundary surface 48 has a shape that spreads toward the end while drawing a curve from the outer peripheral surface 41 a of the shaft portion 41 toward the guide surface 46. For this reason, the jet water W2 colliding with the arc-shaped boundary surface 48 is guided by the guide surface 46 and radiates radially around the center line CL while diffusing in the circumferential direction with the center line CL as a reference.

At this time, the range in which the spray water W2 diffuses is the entire 360 ° range when the water spray nozzle 10 is viewed from the non-guide surface 47 side (when viewed from the direction of the arrow La). That is, the range in which water is sprayed radially from the water spray nozzle 10 to the water spray surface 51 is the entire range of 360 °.
The watering angle of the watering W3 sprayed from the watering nozzle 10 is θ. This watering angle θ is an angle of the watering W3 with respect to the surface 51, and when the taper angle of the guide surface 46 shown in FIG. 1 is α2, it is approximately half of the value obtained by subtracting the taper angle α2 from 180 °. equal. That is, θ≈ (180 ° −α2) / 2.

4 (a) and 4 (b) are operation diagrams showing a state where water is sprayed in a half range with the watering nozzle according to the present invention. (A) is sectional drawing, (b) is a schematic plan view.
The watering nozzle 10 is in a state in which half of the plurality of injection holes 27, 27 is closed by the closing member 29. For this reason, the high-pressure water W <b> 1 supplied from the water source to the water supply chamber 23 is ejected from the remaining half of the injection holes 27 toward the guide surface 46 with high power. The jetted water (sprayed water) W2 flows along the outer peripheral surface 41a of the shaft portion 41, collides with the arc-shaped boundary surface 48, diffuses in the circumferential direction, and is guided by the guide surface 46 to scatter radially. To do.

  At this time, the range in which the jet water W2 diffuses in the circumferential direction is a range of 180 ° when the water spray nozzle 10 is viewed from the non-guide surface 47 side as shown in (b). That is, the range in which water is sprayed radially from the water spray nozzle 10 to the surface 51 to be sprayed is 180 °.

  In this way, water is sprayed by appropriately selecting and attaching / detaching the closing member 29 to the plurality of injection holes 27, 27 (that is, selecting the plurality of injection holes 27, 27 appropriately and closing with the closing member 29). A range in which water is sprayed radially from the nozzle 10 can be easily set. For example, it can be switched appropriately between the full range of 360 ° and the half range of 180 °.

  Furthermore, since the closing member 29 is a screw-in type plug, the water spraying range can be set very simply by screwing the plug 29 into the injection hole 27. Further, since the plug 29 is screwed into the screw hole 27, the water sealing performance of the closed injection hole 27 can be almost completely ensured without using a seal member.

By setting the taper angle α2 (see FIG. 1) of the guide surface 46 to be large, the watering angle θ of the watering W3 sprayed from the watering nozzle 10 can be made extremely small as shown in FIG. Moreover, the guide surface 46 can be set lower than the surface to be sprayed 51 by disposing the non-guide surface 47 at substantially the same level with respect to the surface to be sprayed 51.
Since the height of the guide surface 46 is lowered and the watering angle θ is reduced, the height of the watering W3 with respect to the watering surface 51 can be greatly lowered. Since the height of the water spray W3 is low, it is difficult to be affected by the wind when the water spray nozzle 10 is used outdoors. As a result, water can be sprayed sufficiently uniformly on the surface 51 to be sprayed.

Since the dispersion water 51 is a road surface test course of a vehicle such as an automobile, watering W3 is under the influence of wind, since the test course covered with fog, it can not be performed quickly tested.
On the other hand, by employing the watering nozzle 10 of the present invention and disposing the non-guide surface 47 at substantially the same level with respect to the road surface, the watering W3 is not easily affected by the wind, so that the test course is covered with fog. Can be suppressed. As a result, the test can be performed promptly.

  Incidentally, as shown in FIG. 3, in the range where the flow rate of the jet water W2 does not exceed the specified amount, the jet water W2 is guided by the guide surface 46 and scatters. It is not guided by the tapered surface 35 on the side. For this reason, the gap Sp between the tapered surface 35 and the guide surface 46 can be set large.

As described above, the nozzle body 20 is provided with the flange portion 31 having the tapered surface 35 in order to secure the passage of the water spray W3 because the height of the guide surface 46 is lowered and the water spray angle θ is reduced. It is. Therefore, when it is possible to ensure the passage of the water spray W3 on the water spray surface 51, it is not necessary to provide the flange portion 31 having the tapered surface 35.
Furthermore, even if the non-guide surface 47 is arranged at substantially the same level with respect to the water surface 51 such as a road surface to be watered, water can be sprayed onto the water surface 51 sufficiently uniformly.

Moreover, since the jet water W2 jetted from the jet holes 27 and 27 collides with the arc-shaped boundary surface 48 and is guided and scattered outward by the guide surface 46, the diameter of the jet holes 27 and 27 Even if the gap Sp is large, water can be sprayed sufficiently uniformly on the surface 51 to be sprayed. Therefore, since the diameter of the injection holes 27 and 27 and the size of the passage Sp (gap Sp) of the water spray W3 can be set large, clogging of the injection holes 27 and 27 and the gap Sp can be prevented.
Furthermore, since the water channel from the water supply chamber 23 (water inlet) to the gap Sp (water spray portion) in the water spray nozzle 10 is extremely simple, the pressure loss of the water channel can be reduced. As a result, it is possible to sufficiently ensure the sprinkling momentum, so that the water can be sprayed sufficiently uniformly on the surface to be sprinkled.

  Furthermore, the inside of the watering nozzle 10 can be easily cleaned by removing the nozzle body 20. In particular, the water channel from the water supply chamber 23 to the gap Sp has a very simple shape. When the nozzle body 20 is removed, the injection holes 27, 27 can be directly observed from the nozzle body 20 side (in the direction of the arrow La in FIG. 3), and therefore can be easily cleaned. Moreover, since the taper surface 35 and the guide surface 46 can be directly observed when the nozzle body 20 is removed, the surfaces 35 and 46 can be easily cleaned. Therefore, the maintenance and inspection workability of the watering nozzle 10 is good. In addition, the nozzle body 20 can be easily replaced.

Since the edge 47a on the non-guide surface 47 side of the casket portion 42 is chamfered, when the water spray nozzle 10 is provided on the water spray surface 51 and the non-guide surface 47 is set at substantially the same level with respect to the water spray surface 51, Even if a tire 71 (shown by an imaginary line) of a vehicle traveling on the water spray surface 51 hits the water spray guide member 40, the impact on the tire 71 can be more sufficiently mitigated and the durability of the tire 71 can be improved. Can do.
In addition, since the impact on the tire 71 is reduced, the impact on the vehicle can be reduced. The impact acting on the nozzle body 20 can also be reduced. As a result, the durability of the watering nozzle 10 can be enhanced.

In the embodiment of the present invention, the use of the watering nozzle 10 is arbitrary.
Further, the size and shape of the injection holes 27, 27 and the size of the gap Sp between the tapered surface 35 and the guide surface 46 are arbitrary.
Moreover, the closing member 29 is not limited to the structure which can be attached or detached to the injection hole 27, For example, the valve provided in the injection hole 27 may be sufficient.
The watering nozzle 10 according to the present invention is installed on the road surface of a test course of a vehicle such as an automobile.

The watering nozzle 10 of the present invention is particularly suitable for installation on the road surface of a test course of a vehicle such as an automobile as described above .

It is sectional drawing of the watering nozzle which concerns on this invention. It is an exploded view of the watering nozzle concerning the present invention. It is an effect | action figure which shows the state which waters the whole range with the watering nozzle which concerns on this invention. It is an effect | action figure which shows the state which waters in the half range with the watering nozzle which concerns on this invention. It is a schematic diagram of the conventional watering nozzle.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Sprinkling nozzle, 20 ... Nozzle main body, 27 ... Injection hole (screw hole), 29 ... Closing member (plug), 40 ... Sprinkling guide member, 41 ... Shaft part, 42 ... Bump part, 46 ... Guide surface, 47 ... Non-guide surface, 47a: edge on the non-guide surface side, 48: boundary portion between the outer peripheral surface of the shaft portion and the guide surface (arc-shaped boundary surface), 51: sprayed surface, Ci: array circle, CL: array circle Center, W1 ... water, W2 ... jet water, W3 ... watering.

Claims (2)

A nozzle body in which a plurality of injection holes for injecting water are arranged at equal intervals on the same arrangement circle, and a watering guide member arranged on the center of the arrangement circle so as to face the openings of the plurality of injection holes. A watering nozzle is formed by a combination structure,
The water sprinkling guide member comprises a central rod-shaped shaft portion extending in the spraying direction along the plurality of spray holes, and a disc-shaped cap portion that extends from the shaft portion and is orthogonal to the shaft portion. It is a cross-sectional view substantially T-shaped member,
The Casa part has a guide surface facing the openings of the plurality of injection holes, and a flat non-guide surface opposite to the guide surface,
The outline of the boundary portion between the outer peripheral surface of the shaft portion and the guide surface is configured by an arc-shaped boundary surface that draws a curve from the outer peripheral surface of the shaft portion toward the guide surface ,
The plurality of injection holes are screw holes, and a screw hole closing member constituting the injection hole is constituted by a plug that can be screwed into the screw hole,
The said cap part is the structure which chamfered the edge by the side of the said non-guide surface,
The watering guide member is detachably attached to the nozzle body,
The non-guide surface is substantially at the same level as the surface to be sprayed, and is installed on the road surface of a vehicle test course.
A watering nozzle characterized by that. An installation hole is provided at a right angle to the surface to be sprayed, an installation socket is attached to the installation hole, a nozzle holder is attached to the installation socket, and the flange portion of the nozzle holder is connected via a flange portion provided on the nozzle body. The watering nozzle according to claim 1, wherein the watering nozzle is attached by attaching a nozzle body.

Images