JP2550620Y2 - Watering nozzle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watering nozzle used by being connected (connected) to the end of a hose used for gardening or the like. It relates to a nozzle for spraying water.

[0002]

2. Description of the Related Art Conventionally, various types of watering nozzles (hereinafter simply referred to as nozzles) capable of switching watering modes have been developed. FIG. 5 shows an example of the watering nozzle. The nozzle has a pistol shape, and has a cylindrical outer cylinder 51, an inner cylinder 52 fixed inside the outer cylinder 51 through a shower plate 55 having a large number of shower holes, and a tip inside the inner cylinder 52. To be able to move back and forth, and a grip 6 on one side of the end.
0, and the outer cylinder 51
Are screwed into the nozzle body 53 so as to be able to move back and forth.

[0003] At the time of switching operation of the watering mode in this case, the outer cylinder 51 is connected to the nozzle body (also simply referred to as a nozzle).
By rotating (rotating) relative to 53, the amount of screwing with respect to the main body 53 is changed, and the amount of insertion of the tip of the main body 53 into the inner cylinder 52 is changed to move the position of the hole 54 back and forth, thereby forming a watering form. You have to switch. Then, a hose (not shown) is connected to the hose connection port 61, and
The on / off valve 64 is opened by gripping the lever 0 and pulling the lever 62 against the spring 63.

In this nozzle, for example, FIG. 5 (solid line)
In the state shown in FIG. 7, water flows through the main body flow path 5 inside the main body 53.
3a, hole 54, inside (outside flow path) 51a of outer cylinder 51
Through the holes (porous portion) of the shower plate 55 to be sprayed like a shower. Further, the outer cylinder 51 is rotated, and the insertion amount of the distal end of the main body 53 into the inner cylinder 52 is large as shown by a two-dot chain line in the drawing, and the hole 54 is inserted into the inner cylinder 52 (O in FIG. 5).
When it is on the left of the ring packing 56), the water
The water is sprayed from the tip through the main body flow path 53a, the hole 54, and the inner side (inner flow path) 52a of the inner cylinder 52. In this case, when the distal end 57 of the main body 53 is inside the inner cylinder 52, it is ejected in a straight shape, and when it protrudes from the inner cylinder 52, it is configured to be sprayed and sprayed.

In other words, in this case, by rotating the outer cylinder 51 with respect to the main body 53, the amount of screwing with the main body 53 is changed, and the amount of ejection of the tip 57 of the main body 53 with respect to the inner cylinder 52 is increased. The configuration is such that the watering mode is switched by selectively passing the outer circulation path 51a or the inner circulation path 52a that is the passage path of the water to be sprayed. Incidentally, such switching is performed for optimal watering according to the purpose.

[0006]

In the above-mentioned conventional nozzle, in order to switch the watering mode, the outer cylinder 51 on the tip side must be gripped by hand and rotated relative to the main body 53. Therefore, at that time, there was a problem that hands and clothes became wet. That is, since the main body 53 cannot be rotated because the hose (not shown) is connected to the hose connection port 61 at the end of the grip portion 60, the user can switch the main body 53 with one hand when switching. While holding
The outer cylinder 51 is rotated by the other hand. In this case, since the outer cylinder 51 from which water is spouting from the tip must be operated, its hands become wet. When the water flow is strong or when the water is sprayed in a mist, the squirted water easily hits the hands and scatters, and it is not uncommon for clothes and face to accidentally get wet, which has been a particularly serious problem in winter. Further, in the conventional nozzle, since the main body is substantially divided into two by the outer cylinder 51 and the main body 53, in order to solve such a problem, a structure for switching the watering mode is used. Is complicated.

The present invention has been made in view of the above-mentioned problem in a pistol-type nozzle in which the spraying of water spouted by the back and forth movement of the nozzle body is changed, and a structure for switching the spraying form is provided. It is an object of the present invention to provide a nozzle that solves the above-mentioned problem at the time of switching without causing complication.

[0008]

In order to solve this problem, in a watering nozzle according to the present invention, a cylindrical outer cylinder is provided with a grip on one side thereof, and a portion of the outer cylinder near a front end thereof is provided. The inner cylinder is provided with an inner cylinder so as to form an outer circulation path between the outer cylinder and the outer cylinder, and a shower plate is provided at an opening formed by a part near the tip of the inner cylinder and a part near the tip of the outer cylinder. And
A nozzle body having a main body circulation path inside and a through hole communicating with the outside near the front end, and a front end portion inserted into the inner cylinder and supported to be movable back and forth in the outer cylinder. And a space that communicates with the outer circulation path is provided outside the nozzle body and inside the outer cylinder, and a continuous portion between the outer cylinder and the grip portion passes through the grip portion. The nozzle body is provided such that a water supply hole is provided and a water supply form is switched by selectively passing water supplied from the supply hole through the main body flow path or the outer flow path. A water supply port is provided on a side portion of the nozzle main body so that the supply hole and the main body communication path communicate with each other when the supply hole is advanced relative to the outer cylinder. Communication with the space leading to the route is closed The nozzle body is provided with a valve body on the outer periphery thereof, and when the nozzle body is retracted relative to the outer cylinder, communication between the supply hole and the body flow passage is closed. While the valve body is provided on the outer periphery of the nozzle body, the supply hole and the space communicating with the outer circulation path are configured to communicate with each other. A drive mechanism is provided, and operating means for the drive mechanism is provided at a rear end of the outer cylinder.

In this case, it is preferable that the driving mechanism for moving the nozzle body back and forth is constituted by a pair of screws.

[0010]

With this structure, in the present invention, when switching the watering mode, for example, when the dominant hand is holding the grip, the other hand is provided at the rear end of the outer cylinder with the other hand. By appropriately operating the operation means, when the nozzle main body advances, water enters the water supply port of the nozzle main body from the supply hole and is ejected to the outside from the through hole through the main body circulation path, while the nozzle main body retreats In such a case, the water passes through the space or the outer circulation path from the supply hole to the outer circulation path, and is jetted to the outside as a shower from the shower plate. Thus, a desired watering form can be obtained. At this time, since the operating means is at the rear end of the outer cylinder, the desired watering form can be selected without wetting hands or clothes.

In this case, if the drive mechanism for moving the nozzle body back and forth is formed by a pair of screws, the operation can be easily performed without complicating the structure.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to FIGS. However, in FIG. 1, the right side is the front and the left side is the rear. The nozzle of the present example is provided with a grip portion 19 on one side (lower side) of a portion near the left end of the outer cylinder 1 having a tubular shape in the lateral direction, and has a substantially pistol shape. In this example, the outer cylinder 1, the inner cylinder 2, which is concentrically fixed to the outer cylinder 1 on the inner side of the right side of the outer cylinder 1 as described below, A nozzle body 3 inserted inside and supported in the outer tube 1 so as to be movable back and forth as described later, and a drive mechanism and its operating means for moving the nozzle body 3 back and forth, as well as the outer tube 1 and the grip 19 Is provided with a supply hole 18 for water supplied through the inside of the grip portion 19, and is configured as described in detail below.

First, the outer cylinder 1 will be described.
Is provided with a substantially cylindrical base tube portion 11, a front-end enlarged-diameter tube portion 12, and a rear-end side concentrically slightly enlarged tube end portion 13. A male screw 14 is formed on the outer periphery of the end opening of the enlarged-diameter tube portion 12, and the inner diameter of the center portion of the base tube portion 11 is reduced concentrically. Seat 1 which constitutes a valve part with the valve body 36 of FIG.
5 is set. Further, guide grooves 16 are formed in front of the valve seat 15 along the axis.
(See FIG. 2).

A narrow groove 17 is provided on the outer periphery of the outer cylinder 1 near the rear end of the cylindrical end portion 13 and the narrow groove 17 extends along the circumferential direction at substantially equal angular intervals (not shown in detail). , And is formed to fit an E-shaped retaining ring 5 to which a driving screw body 4 constituting a driving mechanism to be described later is mounted.

In this embodiment, the base cylinder 11 and the cylinder end 13
A lower portion of the joint portion with the opening is opened to form a supply hole 18, a grip portion 19 is provided below the supply hole 18, and the supply hole 18 is connected to the supply hole 18 via a hose connection port (not shown) at its end and a known on-off valve 20. It is configured to introduce water.

On the other hand, the inner cylinder 2 has an outer diameter smaller than the inner diameter of the outer cylinder 1, is formed in a substantially cylindrical shape, and is fixed inside the enlarged-diameter cylinder portion 12. However, the inner cylinder 2 has a flange 21 on the outer periphery.
Are fixed to the enlarged-diameter cylindrical portion 12 via the outer peripheral surface of the cylindrical member. In addition, an appropriate number of through holes 22 pass through the flange 21 in parallel with the axial direction of the inner cylinder 2. In this example, the front end of the inner cylinder 2 is reduced in diameter by a predetermined taper.

A shower plate 6 having a large number of shower holes and formed in a disc shape is provided on the opening end surface, which is a portion near the front end of the enlarged-diameter cylindrical portion 12, with a packing 7 interposed therebetween.
4 is attached by screwing a ring-shaped nut 8. However, the center of the shower plate 6 is open and inside (left)
The inner tube 2 is folded back at a predetermined taper angle and is joined to a portion (right end) near the front end of the inner cylinder 2. Thus, in the nozzle of the present example, the outer circulation path S is formed between the inner side of the outer cylinder 1 and the outer side of the inner cylinder 2, and communicates with the through hole 22 and the shower hole.

On the other hand, inside the outer cylinder 1 and extending from the base cylinder portion 11 to the enlarged-diameter cylinder portion 12, the nozzle body 3 is concentric and the tip (right side) of the inner cylinder 2 is described below. And is supported movably back and forth. The nozzle body 3 is formed in a substantially cylindrical shape, and has a main body flow path H inside.
It has.

That is, the tip of the nozzle body 3 is reduced in diameter by the same taper as the front end of the inner cylinder 2, and the tapered portion is provided with an appropriate number of through-holes 31. Rod 33 provided with a head 32 formed in a protruding shape,
It is inserted inside the inner cylinder 2 and the shower plate 6. In this state, the inner circulation path U is formed between the outer peripheral surface of the distal end portion of the nozzle body 3 and the inner peripheral surface of the inner cylinder 2. 31, which communicates with the outside through the inside circulation route U.

The nozzle body 3 has an annular body 34 formed by mounting an O-ring 34a as a closing member in a concave groove at a position near the through hole 31 on the inner periphery of the parallel pipe portion of the inner cylinder 2. The watertightness with the inner surface of the inner cylinder 2 is maintained.
The position of the O-ring 34a is set so as to be located slightly forward of the rear end surface of the inner cylinder 2 when the nozzle body 3 is retracted.

A projection 35 is provided in the radial direction on the outer periphery of the intermediate portion in the longitudinal direction of the nozzle body 3 so that the body 3 can be moved back and forth (slid) along the guide groove 16 described above. (See FIG. 2). An annular valve body 36 in which an O-ring 36a as a closing member is mounted in the concave groove is provided around the outer periphery behind the projection 35, and watertightness with the valve seat 15 is maintained. I have. However, the position of the O-ring 36a is located on the inner peripheral surface of the front end portion of the valve seat 15 when the nozzle body 3 is advanced to the maximum (see FIG. 1), and when the nozzle body 3 is retracted to the maximum. It is set to be located further back (see FIG. 4).

On the other hand, a plug 37 is press-fitted and adhered to the rear end of the nozzle body 3 to close the rear end of the main body flow path H. However, a substantially trapezoidal screw thread 37a is formed at the rear end of the outer periphery of the plug 37, and constitutes a part of a drive mechanism for moving the nozzle body 3 back and forth. In addition, plug 3
A water supply hole 38 is opened at two places in the radial direction slightly forward of 7, and communicates with the main body circulation path H and the outside. Also, O-rings 39 are provided in the grooves around the water supply hole 38 before and after the water supply hole 38.
The annular valve bodies 39 and 40 on which the a and 40a are mounted are provided so as to maintain water tightness with the inner surface 9a of the sleeve 9 fixed inside the rear portion of the base cylinder portion 11. .

In this embodiment, when the nozzle main body 3 is advanced to the maximum as shown in FIG. 1, the O-ring 39 near the rear end comes into contact with the inner surface 9a of the sleeve. The water is introduced from the water supply hole 38 to the main body flow path H in the nozzle body 3 through a supply chamber (space) 18a formed by the outer periphery of the nozzle body 3. In the state shown in FIG. 1, the water spray is fog, but when the nozzle body 3 is retracted and the head 32 enters inward, a straight water spray form is obtained.

When the nozzle body 3 is further retracted,
The O-ring 40 near the front of the water supply hole 38 abuts on the inner surface 9a of the sleeve 9, and the supply of water to the water supply hole 38 is shut off. At this time, the valve element 36 (O-ring 36a) also retreats at the same time, but in this example, both O-rings 36a, 40a
However, the water supply from the supply hole 18 is stopped over both inner surfaces of the left end of the valve seat 15 and the right end of the inner surface 9a of the sleeve (see FIG. 3). When the valve is further retracted, the valve element 36 reaches the inside of the supply chamber 18a, and the supply hole 18
The (supply chamber 18a) communicates with the outer circulation path S, and the water is switched to water spray (shower) from the shower plate 6 (see FIG. 4).

Next, a drive mechanism for moving the nozzle body 3 back and forth and its operating means will be described. In this example, the inner periphery is provided with a female thread 41 and is formed in a bottomed cylindrical shape.
A drive screw body 4 for moving the nozzle body 3 back and forth is rotatably mounted inside the cylinder end 13, and the screw 41 is screwed with the thread 37 a of the plug 37. However, the driving screw body 4 is provided with a ring-shaped groove 42 on the outer periphery near the rear end thereof, and the inner periphery of the E-shaped retaining ring 5 is fitted into the groove 42 so that the driving screw body 4 is Only rotation is possible while restricting movement in the axial direction with respect to the inside of the cylinder 1.
Thus, when the driving screw body 4 is rotated, the nozzle body 3 moves back and forth in the outer cylinder 1 without rotating by the action of the guide groove 16. An operating member (operating means) 10 formed in a cap shape is loosely fitted so as to cover the cylindrical end portion 13 and is fixed to the driving screw body 4 with screws 10a.

In this embodiment, when the operation member 10 is rotated right, the nozzle body 3 moves backward without rotating with respect to the outer cylinder 1, and conversely, when the operation member 10 rotates left, the nozzle body 3 advances. The screw No. 4 is a three-start screw, and is set to a lead that performs almost one rotation and performs the entire stroke.

In the nozzle of this embodiment, a hose is connected to a hose connection port (not shown), and the opening / closing valve 20 is opened by holding the grip 19 with, for example, the right hand. At this time, in a state where the nozzle body 3 is located at the forefront (FIG. 1), water passes from the supply hole 18 to the water supply port 38, passes through the main body flow path H, passes through the through hole 31, and sprays from the inner flow path U to the outside. It is sprinkled in a shape. And the operating member 1
When 0 is rotated clockwise with the left hand and the nozzle body 3 is moved backward, the water flow path is the same, but since the head 32 moves backward, the form of watering is straight.

When the operating member 10 is further rotated to the right and retracted, the nozzle body 3 is at the position shown in FIG.
8 is closed, so that watering is temporarily stopped, but when the operating member 10 is further rotated to the right and retracted, the valve element 36 is located behind the valve seat 15 as shown in FIG. The seat 15 is opened, and water is supplied to the supply hole 18 and the supply chamber 18.
a, water is sprayed from the shower plate 6 through the space inside the valve seat 15 (the space inside the outer cylinder 1) and the outside circulation path S (FIG. 4).
reference).

As described above, according to the nozzle of the present embodiment, the watering mode is switched by moving the nozzle body 3 back and forth. ) Or the outside (outside circulation route S), so that the switching structure can be operated behind the outer cylinder 1 without complicating the structure for switching, so that hands and clothes are wetted. Is prevented.

In the above embodiment, the screws 37a and 41 constituting the drive mechanism of the nozzle body 3 are multi-threaded and the leads are set large, so that the operability is extremely good.
Although not shown, on the rear (back) surface of the operation member 10,
From the arrowheads of the left-handed arrow, right-handed arrow, and left-handed arrow to the right-handed arrow, a drill, straight, stop, and shower may be provided by engraving or the like. By doing so, in the case of a normal use mode, the user can select the watering mode while visually confirming the display, which is also effective in preventing an undesired watering mode and is extremely user-friendly. Good.

In the above-described embodiment, the driving mechanism of the nozzle main body 3 is a screw pair (screw structure) that moves back and forth without rotating the nozzle main body about the axis. However, the driving mechanism moves forward and backward while rotating about the axis. It can also be a structure that does. For example, the structure is such that the nozzle body is directly screwed to the rear end of the outer cylinder, the operation member is disposed at the rear end of the nozzle body, and the operation member is appropriately rotated.

Further, a so-called positive cam structure in which the male screw provided on the plug 37 in the above-described embodiment is formed as a projection that loosely fits into the female screw 41 can be used.

Further, in the above embodiment, the driving mechanism for moving the nozzle body back and forth is a screw pair, but the present invention is not limited to this. Any mechanism (structure) capable of moving the nozzle body back and forth along the axis with respect to the outer cylinder may be used. It is also possible to adopt a configuration in which the nozzle body can be slid while maintaining watertightness by simply operating the nozzle body at the rear side, and can be stopped at an arbitrary position.

[0034]

As described above, in the pistol type nozzle according to the present invention, the structure for switching the watering mode is not complicated, and the operating means for the switching is provided behind the outer cylinder. Since it is provided at the end, a desired watering form can be selected without wetting hands or clothes.

In this case, if the drive mechanism for moving the nozzle body back and forth is constituted by a screw pair, it can be easily operated without complicating the structure, and its practical effect is remarkable. is there.

[Brief description of the drawings]

FIG. 1 is a partially cut-away front central sectional view of an embodiment embodying a watering nozzle according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 shows a state in which the nozzle body is retracted in FIG.
FIG. 7 is a partially omitted front center broken sectional view in a state where a supply hole is closed.

FIG. 4 is a front central cross-sectional view showing a main part in a state where a nozzle main body is retracted in FIG. 1;

FIG. 5 is a front center sectional view of a conventional watering nozzle.

[Explanation of symbols]

 Reference Signs List 1 outer cylinder 2 inner cylinder 3 nozzle body 4 drive screw body 5 E-shaped retaining ring 6 shower plate 10 operating member (operating means) 13 cylinder end 18 supply hole 19 gripping portion 31 through-hole 34 O-ring packing (closing member) 36 Valve body 37 Plug 37a Thread 38 Water supply port 40 Valve body 41 Female screw of drive screw body S Outside circulation path H Main body circulation path U Inner circulation path K Space leading to the outer circulation path

Claims (2)

(57) [Scope of request for utility model registration] An outer cylinder having a cylindrical shape is provided with a grip portion on one side thereof, and an inner flow path is formed inside a portion of the outer cylinder near a front end thereof so as to form an outer circulation path between the outer cylinder and the outer cylinder. Equipped with a tube,
A shower plate is provided at an opening formed between the forward end portion of the inner cylinder and the forward end portion of the outer cylinder, and the outer cylinder has a main body circulation path inside and a through hole communicating with the outside near the distal end. A nozzle body having a hole, and a tip-side portion is inserted into the inner cylinder and supported so as to be able to move back and forth, and the outer circulation path is provided outside the nozzle body and inside the outer cylinder. And a supply hole for water supplied through the inside of the grip portion is provided in a continuous portion between the outer cylinder and the grip portion, and water supplied from the supply hole is provided in the main body. When the nozzle body is advanced relative to the outer cylinder, the supply hole and the main body flow path are switched so that the watering mode is switched by selectively passing the flow path or the outer flow path. Communicate with the nozzle body While a water supply port is provided on the side, a valve body is provided on the outer periphery of the nozzle body so that communication between the supply hole and the space communicating with the outer circulation path is closed, and the nozzle body is When retracted relative to the outer cylinder, a valve body is provided on the outer periphery of the nozzle body so as to close the communication between the supply hole and the main body flow passage, while the supply hole and the outside are provided. It is configured so as to communicate with a space communicating with the circulation path, and furthermore, a drive mechanism for the forward and backward movement is provided behind the nozzle body, and an operating means of the drive mechanism is provided at a rear end of the outer cylinder. A nozzle for watering, characterized in that: 2. The watering nozzle according to claim 1, wherein the driving mechanism for moving the nozzle body back and forth is constituted by a pair of screws.