JPH0543868Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a water spray nozzle structure used for watering garden plants, lawns, etc., car washing, etc.

(b) Prior Art Conventionally, there is a water discharge nozzle for the above purpose, which has the structure shown in FIG.

That is, the inner cylinder a has its rear open end connected to the distal end of the hose c in a tightly tightened state by means of a hose tightening nut b. Further, the inner cylinder a has a closed end thereof, and a water outflow hole d is formed in the side wall located near the inner cylinder a. Further, an outer cylinder e is concentrically fitted and screwed onto the outer peripheral surface of the inner cylinder a,
By rotating the outer cylinder e, it can be moved relative to the inner cylinder a in the axial direction. The outer tube e has a nozzle hole f formed at its tip, and a valve body g provided at the tip of the inner tube a is inserted into the nozzle hole f, and is linked to the relative movement of the outer tube e. Thus, the opening amount of the nozzle hole f can be adjusted. Further, an annular communication space h is formed between the tip of the inner tube a and the tip of the outer tube e, which communicates with the nozzle hole f of the water outlet hole d provided in the inner tube a. Note that i is a rubber gasket.

The operation of the water discharge nozzle having such a configuration will be explained with reference to FIGS. 8 and 9.

First, as shown in FIG. 8, for example, in order to water flowers, etc. near the user, the nozzle hole f is slightly opened by rotating the outer cylinder e.
In the so-called slightly open state, the water W comes out from the nozzle hole f and hits the bulging surface of the valve body g provided at the tip of the inner cylinder a, and then forms a mist and a cone shape as shown in Fig. 8. It will scatter. However, almost no water is scattered in front of the water discharge nozzle in the axial direction.

On the other hand, if, for example, the nozzle hole f is opened sufficiently by rotating the outer tube e to water flowers, etc. located at a considerable distance from the user, as shown in FIG. The water W will be ejected linearly and powerfully.

(c) Problems to be solved by the invention However, with such conventional water spray nozzles, when water is sprayed in a slightly open state as shown in FIG. Since water is only sprayed on the object located in front of it in a ring shape, almost no water is sprayed on the center area inside the ring shape, resulting in poor watering efficiency.

An object of the present invention is to provide a water discharge nozzle structure that can solve the above problems.

(d) Means for solving the problem The present invention has a valve body at the tip of the inner cylinder, and the outer cylinder is fitted onto the outer peripheral surface of the inner cylinder so as to be movable relative to each other concentrically and in the axial direction. However, in a water discharge nozzle structure in which a nozzle hole into which a valve body can be inserted is provided at the tip of the outer cylinder,
A plurality of water spray shielding plates are provided radially in the expansion direction at intervals in the circumferential direction at the tip of the outer cylinder and on the periphery of the nozzle hole, and the water spray shielding plates are made radially bendable; A grip for bending the shielding plate is screwed onto the outer peripheral surface of the outer cylinder, and the water spraying shielding plate can be bent radially in the radial direction by the tip of the grip in conjunction with the screwing of the grip for bending the shielding plate, Furthermore, the present invention relates to a water spray nozzle characterized in that a plurality of water spray gaps are formed between water spray shielding plates.

(E) Functions and Effects With the above configuration, the present invention has the following functions and effects.

In the present invention, a plurality of water sprinkling shielding plates are provided at intervals in the circumferential direction around the tip of the outer cylinder, and a plurality of watering gaps are formed between the watering shielding plates.
Even when the nozzle is slightly opened, some of the mist water droplets that are sprayed from the nozzle hole in a mist and cone shape are scattered radially to the outside through the water sprinkling gap.
The rest of the mist water droplets collide with the water spray shielding plate and their traveling direction is bent in the axial direction of the water discharge nozzle, causing not only the ring-shaped water droplets but also the inner side of the ring-shaped water droplets located in front of the nozzle hole. Water will also be sprinkled on the center of the eggplant. Therefore, it is possible to uniformly spray water in the form of mist over a wider area than the nozzle hole, thereby increasing water spraying efficiency.

In addition, in the present invention, the water spray shielding plate can be bent radially in the radial direction by the tip of the grip in conjunction with the screwing of the grip for bending the shielding plate screwed onto the outer peripheral surface of the outer cylinder. The direction of the mist water droplets can be freely changed by changing the bending angle of the water spray shielding plate, and the ratio of the amount of mist water droplets to the cone-shaped outer part and the central part forming the inner part can be freely changed. This can further improve the usability of the water discharge nozzle structure.

Furthermore, in the present invention, since the water shielding plate is located on the outer periphery of the nozzle hole, the linear splashed water that is generated when the nozzle hole is widened does not collide with the watering shielding plate, so it can be scattered far. be able to.

(f) Examples The present invention will be described in detail below based on examples shown in the attached drawings.

1 to 5 show in detail the internal structure of a water discharge nozzle A equipped with a water discharge nozzle structure according to the present invention.

In FIG. 1, 10 is a long inner cylinder, and the inner cylinder 10 has a reduced diameter cylindrical part 11 with a closed end.
It consists of a central cylindrical portion 12 having a male threaded portion 12a on its outer peripheral surface, and a rear end hose connection portion 13 that connects a hose 16, which will be described later.

First, the configuration of the rear end hose connection part 13 will be described. A hose fastening nut 14 is rotatably screwed around the rear end hose connection part 13.

That is, the rear end hose connecting portion 13 has a male threaded portion 13a formed on its outer circumferential surface, and a hose pinching ridge 13b formed at its rearmost end.
On the other hand, the hose fastening nut 14 has a female threaded portion 14a provided on its inner surface screwed into the male threaded portion 13a, and is provided with a diameter reducing opening 14b at its tip. Part 1
A hose clamping space 15 is formed between the hose and the hose 4b.

With this configuration, after inserting the hose 16 into the hose squeezing space 15, by rotating the hose fastening nut 14, the hose 16 is connected to the water discharge nozzle A.
can be connected in a watertight manner.

The diameter-reduced cylindrical portion 11 at the tip of the inner tube 10 is provided with a water outflow hole 18 in the peripheral wall located near the closing portion 17 at the tip.
The water flowing inside will flow out into an annular water communication space 22, which will be described later, through the water outflow hole 18.

Further, an outer cylinder 20, which is a long cylinder, is attached concentrically around the outer circumferential surfaces of the tip diameter-reduced cylindrical part 11 and the central cylindrical part 12 of the inner cylinder 10.

The outer cylinder 20 has a female threaded part 20a formed on its rear inner circumferential surface, which is screwed into the male threaded part 12a formed on the outer circumferential surface of the central cylindrical part 12 of the inner cylinder 10. When the cylinder 20 is rotated, the outer cylinder 20 moves relative to the inner cylinder 10 in the axial direction.

Further, as shown in FIGS. 1 and 2, the outer cylinder 20 has a circular flange portion 23 formed at its tip, and a circular nozzle hole 24 is bored in the center of the circular flange portion 23. has been done.

Inside this nozzle hole 24 is a rod-shaped valve body 2 provided at the tapered end closing portion 17 of the inner cylinder 10.
5 is inserted so as to be able to move forward and backward, and a bulge 26 is formed at the tip of the valve body 25.

With this configuration, when the outer cylinder 20 is rotated and moved relative to the inner cylinder 10, the valve body 25 advances and retreats into the nozzle hole 24 to adjust the opening amount of the nozzle hole 24, and the circular flange portion By bringing the nozzle hole 23 into contact with the tapered end closing portion 17, the nozzle hole 24 can be completely closed.

Moreover, as shown in FIG.
An annular communication space 22 is formed that communicates the water outflow hole 18 provided in the nozzle hole 24 with the nozzle hole 24, thereby allowing water W flowing into the inner cylinder 10 from the hose 16 to
The water is discharged to the outside through the water outlet hole 18, the annular communication space 22, and the nozzle hole 24.

In addition, in FIG. 1, 27 is the annular communication space 2.
2, and is provided to prevent water W from flowing backward through the annular gap between the inner cylinder 10 and the outer cylinder 20.

The present invention substantially has the above-mentioned water spray nozzle structure, and when the water spray nozzle A is slightly opened, mist water is sprayed not only in a ring shape but also in the central part surrounded by the ring-shaped water spray. It is characterized by a water discharge nozzle structure that can spray water in the form of mist.

That is, in this embodiment, the outer cylinder 20 is made of an elastic material such as rubber or plastic, and as shown in FIGS. 1 and 2, the outer cylinder 20 has a circular flange portion 23 provided at its tip. A plurality of water sprinkling shielding plates 30 are integrally arranged on the periphery of the water sprinkling shield plate 30 at intervals in the circumferential direction, and a plurality of water sprinkling gaps 31 are formed between the water sprinkling shielding plates 30.

In addition, a notch groove 32 is provided at the base end of each water spray shielding plate 30.
is formed, and the water spray shielding plate 30 can be bent in the radial direction or in the radial direction around the notched groove 32.

The water spray shielding plate 30 is formed to expand in the outer radial direction during molding, and under normal conditions, the water spray shielding plate 30 is expanded in the outer radial direction as shown in FIG.

Furthermore, as shown in FIG. 1, the outer cylinder 20 has a male threaded part 20b formed around the outer peripheral surface of its tip, and a female threaded part 35a of the grip 35 for bending the shield plate is screwed into the male threaded part 20b. It matches.

With this configuration, the grip 3 for bending the shield plate
5 around the outer cylinder 20, the same grip 35
advances in the axial direction, presses the outer surface of the water spray shielding plate 30 with its tip shoulder portion 35b, and the water spray shielding plate 3
0 can be moved inward radially or reduced in diameter.

Next, the water spraying operation using the water spray nozzle structure having the above configuration will be explained with reference to FIGS. 3 to 5.

First, as shown in Fig. 3, when watering flowers, etc. near the user, the outer cylinder 2
0 relative to the inner cylinder 10 in the axial direction to separate the circular flange portion 23 forward from the tapered end closing portion 17, the nozzle hole 24 in the fully closed state is slightly changed. Open it and leave it slightly open.

As a result, water W flowing into the inner cylinder 10 from the hose 16 is discharged to the outside through the water outlet hole 18, the annular communication space 22, and the nozzle hole 24.

In such discharge, after the water W exits the nozzle hole 24 forming a narrow annular gap, it hits the distal end bulge 26 of the valve body 25 provided at the distal end of the inner cylinder 10, and its course is changed in the outward radial direction. After that, it turns into mist and scatters in a soft cone shape.

In this embodiment, a plurality of water spray shielding plates 30 are provided at intervals in the circumferential direction on the tip periphery of the outer cylinder 20, and a plurality of water spray gaps 31 are provided between the water spray shielding plates 30.
Therefore, even when the nozzle is slightly opened, some of the mist water droplets that are scattered in a mist and cone shape from the nozzle hole 24 are radially scattered to the outside through the water sprinkling gap 31, and water is discharged in a ring shape. However, the remaining mist water droplets collide with the inner surface of the water spray shielding plate 30 and bend their traveling direction in the axial direction of the water spray nozzle, so that the remaining water droplets are inside the ring-shaped water spray and in front of the nozzle hole 24. Water will also be sprinkled to the central area located in the area. Therefore, water can be sprayed evenly over a wider area than the nozzle hole 24, and watering efficiency can be increased.

In addition, when opening slightly, as shown in FIG. 4, the grip 35 for bending the shielding plate is moved forward to reduce the diameter of the watering shielding plate 30 in the inner radial direction, thereby making the inner surface parallel to the axis. By doing so, the direction of the mist water droplets can be more actively changed by the water spray shielding plate 30, and the amount of water sprayed to the central portion can be increased.

In addition, in the above case, the grip 3 for bending the shield plate
It is also possible to provide the distal end of the water spray shielding plate 5 with a water spray shielding function similar to that of the water spray shield plate 30, and in this case, the amount of mist water sprayed to the central portion can be further increased.

On the other hand, when watering flowers or the like located at a considerable distance from the user, for example, by rotating the outer cylinder 20, the outer cylinder 20 is further axially moved relative to the inner cylinder 10. The circular flange portion 23 is separated from the tapered tip closing portion 17, and the valve body 25 is removed from the nozzle hole 24.
is fully opened as shown in FIG.

As a result, water W flowing into the inner cylinder 10 from the hose 16 is discharged to the outside through the water outlet hole 18, the annular communication space 22, and the nozzle hole 24.

In such discharge, since the nozzle hole 24 forms a linear gap of sufficient width approximately parallel to the axis of the water discharge nozzle A, the water W is discharged in a straight line after leaving the nozzle hole 24. It turns out.

Note that since the water spray shielding plate 30 is located on the outer periphery of the nozzle hole 24, the straight flow from the nozzle hole 24 does not collide with the water spray shielding plate 30, and the water can be scattered far.

Further, another embodiment is shown in FIG. 6, and this embodiment is characterized in that the water spray shielding plate 30 in the embodiments shown in FIGS. 1 to 5 above is configured to be unbendable. This can provide the same water spray shielding effect as the water spray nozzle A in the above embodiment, and also eliminates the need for the grip 35 for bending the shield plate in the above embodiment, simplifying the structure. can.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of a water discharging nozzle having a water discharging nozzle structure according to the present invention, Fig. 2 is a front view of the same, Figs. The figure is an explanatory cross-sectional view of a main part of a water discharge nozzle according to another embodiment, FIG. 7 is a partial cross-sectional side view of a conventional water discharge nozzle, and FIGS. 8 and 9 are explanatory diagrams of the usage state of the same water discharge nozzle. . In the figure, A...Water nozzle, W...Water, 10...
Inner cylinder, 20... Outer cylinder, 24... Nozzle hole, 25...
... Valve body, 30 ... Sprinkle shielding plate, 31 ... Water sprinkling gap.

Claims (1)

[Claims for Utility Model Registration] The inner cylinder 10 has a valve body 25 at its tip;
In the water discharge nozzle structure, an outer cylinder 20 is fitted concentrically and relatively movably in the axial direction on the outer peripheral surface of the outer cylinder 20, and a nozzle hole 24 into which a valve body 25 can be inserted is provided at the tip of the outer cylinder 20. A plurality of water spray shielding plates 30 are provided at the tip of the cylinder 20 and at the periphery of the nozzle hole 24 at intervals in the circumferential direction and radially in the expansion direction.
0 is made radially bendable, and a grip 35 for bending the shielding plate is screwed onto the outer peripheral surface of the outer cylinder 20, and the tip of the grip 35 is used in conjunction with the screwing of the grip 35 for bending the shielding plate. A water spray nozzle characterized in that the water spray shielding plates 30 are radially bendable in the diameter reduction direction, and a plurality of water spray gaps 31 are formed between the water spray shielding plates 30.