JP3043008B1 - Installation structure of watering nozzle in watering pipe - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To provide a proper mounting posture of a watering nozzle with respect to a watering pipe, to improve the mounting strength of the nozzle, to have excellent watertightness and shock absorbing effect of a mounting part, and to easily perform repair and replacement of the watering nozzle. To A sprinkling nozzle (5) is provided in a mounting hole (3) formed in a pipe (2).
In the water sprinkling pipe 1 which is mounted with the above, an elastic tube 4 is inserted into the mounting hole 3 and the water sprinkling nozzle 5 is press-fitted into the elastic tube 4 or screwed in while self-tapping.
The sprinkling nozzle 5 was attached to the mounting hole 3 by press-fitting or screwing the elastic tube 4 between the inner peripheral surface of the mounting hole 3 and the outer peripheral surface of the watering nozzle 5 in a compressed state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a watering nozzle in a watering pipe installed in an open area such as a farm or in a facility such as a greenhouse.

[0002]

2. Description of the Related Art A watering pipe 1 'shown in FIG.
Are formed along the length of the pipe 2 'made of synthetic resin or the like, along a bus of the outer peripheral surface of the pipe, and a plurality of mounting holes 3' at substantially equal intervals.
And a female screw 4 'is formed on the thin wall of the mounting hole 3'.
The female screw 4 'is screwed with a male screw 5a' formed on the outer peripheral surface of the watering nozzle 5 'to form a large number of watering nozzles 5'.
Is attached to the pipe 2 '.

[0003]

In the watering pipe 1 ', the watering nozzle 5' must be mounted upright with respect to the axis X of the pipe 2 'in order to obtain a uniform umbrella-shaped watering shape. For this purpose, it is necessary to drill the mounting hole 3 'vertically toward the axis X.

However, in actuality, the inclination of the mounting hole 3 'with respect to the axis X cannot be avoided during drilling, and the inclination of the hole 3' causes the mounting posture of the watering nozzle 5 'to be inclined. .

[0005] Further, in the case of a thin pipe 2 'having a wall thickness of about 2 mm, only a female screw 4' of about two pitches can be formed.
Insufficient screwing strength of the nozzle 5 'cannot be secured, screwing cannot be performed due to chipping of the female thread at the time of screwing, it is difficult to center properly at the time of screwing, and the nozzle 5' is tilted due to poor screwing. Tends to occur.

[0006] In addition, with the screwing of only about 2 pitches, the problem of water leakage cannot be avoided, and the repair and replacement of the individual nozzles also breaks the thread, so that there is a problem that the replacement of the whole watering pipe is inevitable. ing.

In particular, when the watering pipe with the nozzle attached thereto is transported to the installation site, the watering nozzle is subjected to an impact, which damages the wall of the mounting hole and causes the nozzle to fall off. It is common practice to attach nozzles to pipes.

[0008]

According to the present invention, as a means for solving the above problem, in a watering pipe having a watering nozzle attached to a mounting hole formed in the pipe, an elastic cylinder is inserted into the mounting hole, The sprinkler nozzle above
Screw the screw while inserting the elastic cylinder between the inner peripheral surface of the mounting hole and the outer peripheral surface of the watering nozzle in a compressed state .
At the screwed end, and
With the lower surface seated on the upper surface of the elastic flange
The sprinkler was compressed and pressed against the outer surface of the sprinkler pipe , and a sprinkler nozzle was attached to the mounting hole.

Thus, the inclination of the mounting hole and the inclination at the time of nozzle installation are absorbed by the elastic cylinder, and the self-tapping is performed by the elastic cylinder.
It is possible to secure the ping margin, attach the watering nozzle to the pipe with an appropriate mounting posture and mounting strength, and secure the watertightness of the nozzle mounting portion by the sealing effect of the elastic cylinder.

[0010] In addition, the installation and removal of the watering nozzle can be conveniently performed through the above-mentioned elastic cylinder, such as repair and replacement of each nozzle.

In addition, the impact applied to the watering nozzle is absorbed by the elastic cylinder, thereby preventing damage to the nozzle mounting hole wall and eliminating the problem of nozzle dropout. Therefore, a nozzle can be attached to a pipe in a factory, and the pipe can be transported to the site, thereby streamlining distribution such as reducing the burden on the user.

[0012]

FIG. 1 shows an embodiment of the present invention.
A description will be given based on FIGS.

In FIG. 1, reference numeral 1 denotes a water sprinkling pipe. The water sprinkling pipe 1 has an elastic cylinder 4 inserted into a mounting hole 3 drilled at an interval over the length of the pipe 2, and water is sprinkled into the elastic cylinder 4.
The nozzle 5 is screwed in while self-tapping with a male screw formed on the outer peripheral surface of the nozzle 5, and the watering nozzle 5 is attached to the attachment hole 3 of the pipe 2 via the elastic cylinder 4.

The pipe 2 is made of a synthetic resin such as hard vinyl chloride or a metal, or the like, and has a length of 3 to 5 m, an outer diameter of about 25 to 50 mm, and an inner diameter of about 20 to 45 m.
3 to 20 nozzle mounting holes 3 are formed at substantially equal intervals along one generatrix of the outer peripheral surface of the pipe 2 over the length of the pipe 2.

A joint tube 6 having an enlarged diameter is provided at one end of the pipe 2.
Are connected to the same axis, and the sprinkling pipes 1 are connected to each other via the joint tube 6, or the water supply hose 7 is connected via the joint tube 6.

As shown in FIGS. 2A and 2B, the sprinkling nozzle 5 is composed of two parts: a nozzle shaft 8 and a shaft cylinder 9 made of metal or synthetic resin.

The nozzle shaft 8 has a large diameter screw head 8a at the upper end.
And a male screw 8b at the lower end.
An annular flange 8c is provided at the upper end of b.

On the other hand, the shaft cylinder 9 is formed to have a larger diameter than the cylinder hole 21 of the elastic cylinder 4, and an annular taper 15 is formed at the lower end of the cylinder 9.
And a hexagonal large-diameter head 16 for operating a tool is continuously provided on the upper end thereof.
Open in the center of

As shown in FIG. 6, a cylindrical hole 9a of the shaft cylinder 9 is provided.
The nozzle shaft 8 is inserted into the same axis and the nozzle shaft 8
Female screw 9 formed with a male screw 8b at the lower end of the inner wall of the cylindrical hole 9a
b around the nozzle shaft 8 with the annular flange 8c
An annular water passage 11 surrounded by the inner wall of the cylinder hole 9a of the shaft cylinder 9 corresponding to the overhang width is formed.

An annular water outlet 12 is formed at the upper end opening of the annular water passage 11, and the head 16 of the shaft cylinder 9 is formed.
A water spout 10 having an annular gap is formed between the screw head 8a of the nozzle shaft 8 and the water spout 10 and the water spout 12.

Further, for example, two or four
A plurality of water sampling ports 13 are provided, and each water sampling port 13 is communicated with the water passage 11, whereby water taken in from the water sampling port 13 is discharged from the water outlet 12 through the water passage 11, and the annular water spout 10 is provided. Sprinkle water in an umbrella form.

As another example, as shown in FIG. 3, the watering nozzle 5 is formed as a single part made of metal or synthetic resin.

The watering nozzle 5 is formed to have a larger diameter than the cylindrical hole 21 of the elastic cylinder 4, and the watering nozzle 5 is provided below the watering nozzle 5.
A slit 14 opening at the lower end of the
The diameter of the lower part of the nozzle 5 can be reduced via the nozzle 4.

A taper 15 is formed at the open end of the slit 14, and the sprinkling nozzle 5 is pressed into the elastic cylinder 4 by the guide of the taper 15, and a water sampling port 13 is formed at the center of the closed end. Open. A water passage 11 is formed along the axis of the nozzle 5 in communication with the water sampling port 13, and a water outlet 12 is opened above the water passage 11.

A large-diameter head 16 is provided above the watering nozzle 5, and a watering port 10 that opens in one or two directions on the side surface of the head 16 is formed in communication with the water outlet 12, and a water sampling port is formed. The water taken in from 13 is discharged from the water outlet 12 through the water passage 11 and sprinkled from the water spout 10.

The watering nozzle 5 shown in FIG.
Male screw 1 on the outer peripheral surface of shaft cylinder 9 between head 16 and water sampling port 13
As shown in FIG. 6, as shown in FIG. 6, the male screw 17 is screwed into the inner wall of the cylinder hole 21 of the elastic cylinder 4 while self-tapping, and the watering nozzle 5 is screwed.

Similarly, in the watering nozzle 5 shown in FIG. 3, a male screw 17 is formed on the outer peripheral surface of the nozzle 5 between the head 16 and the slit 14, and the cylindrical hole 21 of the elastic cylinder 4 is formed by the male screw 17.
Sprinkling nozzle 5 with self-tapping and screwing on inner wall
Are screwed together.

The elastic cylinder 4 is an elastic bush made of rubber, synthetic resin, or the like. As shown in FIGS. 4A, 4B, and 4C, an elastic flange 19 is connected to the upper end of the elastic cylinder 4 and has the lower end. The elastic flange 19 is seated on the outer surface of the pipe 2 at the end of the insertion to set the insertion depth.

As shown in FIG. 4 and FIG.
Means that the outer diameter R1 of the cylinder is larger than the diameter R2 of the mounting hole 3 (R1>
R2) and press-fit into the mounting hole 3 or insert it into the mounting hole 3 with equal or slightly smaller diameter (R1 ≦ R2).

At this time, as shown in FIGS.
A locking claw 20 can be formed at the lower end of the pipe 2, and the locking claw 20 is engaged with the edge of the mounting hole 3 on the inner surface of the pipe 2. The elastic cylinder 4 has a flange 19 engaged with the outer surface of the pipe 2 and
The locking claw 20 is locked to the inner surface of the pipe 2 and the inserted state is maintained. Further, means for fixing the elastic cylinder 4 to the hole wall 3a of the mounting hole 3 with an adhesive may be used together.

As shown in FIGS. 4 and 5, the hole diameter R3 of the cylinder hole 21 of the elastic cylinder 4 is set to be R3 relative to the shaft diameter R4 of the watering nozzle 5.
It is formed to have a small diameter of <R4, and this difference in diameter makes it possible to screw the watering nozzle 5 into the cylindrical hole 21 with press fitting .

Further, when the elastic cylinder 4 is inserted into the mounting hole 3 of the pipe 2, the height H 1 of the elastic cylinder 4 is adjusted to the wall of the pipe 2 so that the lower end of the elastic cylinder 4 slightly projects from the mounting hole 3. Thickness H2
Is formed so that H1> H2.

As shown in FIGS. 5B and 8, the sprinkling nozzle 5 shown in FIGS. 2A, 2B or 3 is screwed into the elastic cylinder 4 while self-tapping, and screwed into the cylindrical hole 21. .

More specifically, the taper 17 at the lower end of the watering nozzle 5
The inner wall of the mounting hole 3 and the outer periphery of the watering nozzle 5 are screwed while self-tapping the inner wall of the cylindrical hole 21 while compressing the cylindrical wall 18 of the elastic cylinder 4 toward the hole wall of the mounting hole 3 with the guide. While compressing the cylinder wall 18 of the elastic cylinder 4 between the surfaces,
The cylindrical wall 18 is extended in the screwing direction and the lower end of the cylindrical wall 18 is pushed and expanded by the nozzle press-fitting while increasing the amount of protrusion by the extension to form the locking claw 20.
Biting engagement with the edge of.

Accordingly, the elastic cylinder 4 is interposed between the outer peripheral surface of the nozzle 5 and the inner peripheral surface of the mounting hole 3 in a compressed state.

The tapped female screw 18 'is satisfactorily screwed into the male screw 17 of the nozzle 5 by the elastic force of the cylindrical wall 18, and the elastic cylinder 4 is relatively fixed by the elastic force.
Is tightly fitted in the mounting hole 3, and the locking claw 20 bites and engages the edge of the mounting hole 3, and the elasticity interposed in a compressed state between the outer peripheral surface of the nozzle 5 and the inner wall peripheral surface of the mounting hole 3. A watering nozzle 5 is firmly attached to the pipe 2 via the cylinder 4. Further, the impact applied to the nozzle 5 is absorbed by the elastic cylinder 4 to prevent the nozzle mounting hole wall from being damaged.

As shown in FIGS. 6 and 7, at the screwing end of the watering nozzle 5, the head 16
The lower surface is seated on the upper surface of the elastic flange 19 of the elastic cylinder 4, and the elastic flange 19 is compressed and pressed against the outer surface of the pipe 2.

The head 1 of the watering nozzle 5 is disposed on the upper surface of the elastic flange 19 in parallel with the horizontal diameter line passing through the axis X of the pipe 2.
Support 6 As described above, the watering nozzle 5 is connected to the pipe 2
Vertically.

[0039]

Effects of the Invention According to the present invention, by attaching the sprinkler nozzle pipe via the elastic tube, its own by the elastic tube
The self-tapping margin is secured , the inclination of the mounting hole and the inclination at the time of nozzle installation are absorbed by the elastic cylinder, and the mounting posture of the watering nozzle with respect to the pipe can be made appropriate, and the mounting strength of the watering nozzle can be obtained. In addition, the sealing effect of the elastic cylinder can ensure the watertightness of the nozzle mounting portion.

Further, each of the watering nozzles can be easily attached and detached via the elastic cylinder, so that repair and replacement of the nozzles can be easily performed.

Further, since the impact applied to the watering nozzle can be absorbed by the elastic cylinder, the problem of damage to the nozzle mounting hole wall due to the impact and the nozzle falling off due to the impact as in the conventional example can be solved. Therefore, it is possible to attach a nozzle to a pipe in a factory and transport the nozzle to a site, thereby achieving a streamlining of distribution such as a reduction in a burden on a user.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a watering pipe showing an embodiment of the present invention.

FIGS. 2A and 2B show a watering nozzle having a two-part structure that is screwed while being pressed into a watering pipe, wherein FIG. 2A is an exploded side view showing the watering nozzle, and FIG. 2B is an assembled side view of the watering nozzle.

FIG. 3 is a cross-sectional view of a watering nozzle that is screwed while being press-fitted.

4A is a longitudinal sectional view of an elastic cylinder used for mounting the nozzle, FIG. 4B is a side view showing another example of the elastic cylinder, and FIG. 4C is a longitudinal sectional view of the same.

5A is a cross-sectional view illustrating a state in which the elastic cylinder illustrated in FIG. 5A is inserted into a mounting hole, and FIG. 5B is a cross-sectional view schematically illustrating a state in which the elastic cylinder illustrated in FIG. 6A is screwed into the elastic cylinder.

FIG. 6 is an essential part cross-sectional view showing a state where the water spray nozzle shown in FIGS. 2A and 2B is press-fitted and screwed into the elastic cylinder.

7 is a sectional view of the water sprinkling nozzle attached to the water sprinkling pipe in FIG.

FIG. 8 is a cross-sectional view illustrating a mounting structure of a watering nozzle in a conventional watering pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sprinkling pipe 2 Pipe 3 Mounting hole 4 Elastic cylinder 5 Sprinkling nozzle 17 Male screw 19 Elastic flange 20 Locking claw

Claims (1)

(57) [Claims] 1. A watering pipe comprising a watering nozzle attached to a mounting hole formed in the pipe, and an elastic cylinder is inserted into the mounting hole.
The elastic flange provided at the upper end of the elastic cylinder
Is seated on the type outer surface, the water spray nozzle screwed with self-tapping into the elastic cylinder, with intervening the elastic tube in a compressed state between the said screwing the mounting hole periphery sprinkler nozzle outer peripheral surface, the At the screwed end,
The lower surface of the head on the upper surface of the elastic flange.
A sprinkling nozzle mounting structure for a sprinkling pipe, wherein the flange is compressed and pressed against the outer surface of the sprinkling pipe , and a sprinkling nozzle is mounted in a mounting hole.