JPH0611850U - Nozzle for watering - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to change the watering form without getting your hands or clothes wet. [Structure] The inside of the rear end of the outer cylinder 1 and the outside of the rear end of the nozzle body 3 are screwed together, and the nozzle body 3 is moved back and forth in opposition to the outer cylinder 1 to switch the sprinkling mode. The nozzle body 3 is
The thread 37a on the outer periphery of the plug 37 press-fitted at the rear end thereof
And the screw 41 of the drive screw body 4 which is mounted inside the cylinder end portion 13 of the outer cylinder 1 so as to rotate only without changing the position in the axial direction. An operation member 10 is provided on the rear portion of the drive screw body 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water spray nozzle that is used by connecting (connecting) to the tip of a hose used for horticulture and the like, and more particularly to a water spray nozzle that can switch the spraying form of water that is ejected.

[0002]

[Prior art]

 Conventionally, a technique shown in FIG. 4 has been known as a water spray nozzle (hereinafter, also simply referred to as a nozzle) capable of switching water spray modes. The nozzle shown in FIG. 4 is mainly composed of an outer cylinder 51, an inner cylinder 52 fixed inside the outer cylinder 51 via a shower plate 55, and a nozzle main body 53 whose tip is inserted into the inner cylinder 52 so as to be movable back and forth. The outer cylinder 51 is screwed onto the nozzle body 53 so as to be rotatable and movable back and forth. Then, at the time of the switching operation of the sprinkling mode, the outer cylinder 51 is rotated (rolled) relative to the nozzle main body (also simply referred to as a nozzle) 53 to change the screwing amount with respect to the main body 53, and to the inner cylinder 52. By changing the insertion amount of the tip of the main body 53 and moving the position of the hole 54 forward and backward, the watering form is switched.

In this nozzle, for example, in the state shown in FIG. 4, water flows through the main body circulation path 53 a inside the main body 53, the hole 54, and the inner side (outside circulation path) 51 a of the outer cylinder 51, and the shower plate 55. Water is sprinkled in the shape of a shower from the holes (perforated part). Further, when the insertion amount of the tip of the main body 53 with respect to the inner cylinder 52 is large and the hole 54 is inside the inner cylinder 52 (on the left of the O-ring packing 56 in FIG. 4), the water flows through the main body circulation path 53a inside the main body 53. Then, water is sprayed from the tip through the hole 54 and the inside (inner circulation path) 52a of the inner cylinder 52. In this case, when the tip 57 of the main body 53 is in the inner cylinder 52, it is jetted in a straight shape, and when it projects from the inner cylinder 52, it is atomized and sprayed. In other words, by rotating the outer cylinder 51 with respect to the main body 53, the screwing amount with respect to the main body 53 is changed, and in the passage path of water ejected depending on the insertion amount of the tip 57 of the main body 53 with respect to the inner cylinder 52. It is configured such that the sprinkling form is switched by selectively passing an outer distribution path 51a or an inner distribution path 52a. By the way, such switching is done for optimum watering according to the purpose.

[0004]

[Problems to be solved by the device]

 In the above-described conventional nozzle, in order to switch the water spraying form, the outer cylinder 51 on the tip side must be held by hand and relatively rotated with respect to the main body 53, so that the hand and clothes get wet at that time. There was a problem. That is, since the main body 53 cannot be rotated because the hose (not shown) is connected to the rear end portion 58 thereof, the user holds the main body 53 with one hand while switching the other hand when switching. Thus, the outer cylinder 51 is rotated. In this case, since the outer cylinder 51 from which water is ejected from the tip is operated, the hand gets wet. When the water flow is strong or when it is sprayed in a mist, it is easy for splashed water to splash on your hands and accidentally get your clothes or face wet, which is a particularly serious problem in winter. It was

The present invention has been made in view of the above problems, and is a passage through which water is ejected depending on the amount of insertion of the nozzle body into the inner cylinder, as in the conventional nozzle described above. It is an object of the present invention to provide a nozzle for spraying, which is configured to switch the spraying form by selectively passing through the outer distribution path or the inner distribution path, without the need to wet the hands or clothes.

[0006]

[Means for Solving the Problems]

 In order to solve this problem, the present invention has an outer cylinder, an inner cylinder fixed inside the outer cylinder to form an outer circulation path between the outer cylinder, and a main body circulation path on the inner side, and a tip of the inner cylinder. A nozzle main body that is inserted into the cylinder so as to be movable back and forth and forms an inner distribution path between the inner cylinder and the inner distribution path; and a closing member that blocks communication between the outer distribution path and the inner distribution path. In a sprinkling nozzle configured to switch the sprinkling mode by selectively passing the water jetted out depending on the amount of insertion of the nozzle body into the cylinder, the nozzle body is the outer cylinder. It is supported so as to be movable back and forth inside, and a drive mechanism for moving back and forth is provided at the rear of the nozzle body, and operating means for the drive mechanism is provided at the rear end portion of the outer cylinder. In this case, the drive mechanism for the back-and-forth movement of the nozzle body may be configured by a screw pair.

[0007]

[Action]

 With this configuration, in the present invention, when switching the sprinkling mode, for example, when the outer cylinder is held (held) with the dominant hand, the other hand is used to operate the operating means provided at the rear end portion of the outer cylinder. Are operated appropriately. Thus, the desired sprinkling form can be obtained, but at this time, since the operating means is at the rear end portion of the outer cylinder, the desired sprinkling 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 configured by a screw pair, the structure can be easily operated without complicating the structure.

[0008]

【Example】

 An embodiment of the present invention will be described in detail with reference to FIGS. However, in FIGS. 1 and 2, the right side is the front and the left side is the rear. The nozzle of this example includes an outer cylinder 1, an inner cylinder 2 that is concentrically fixed to the outer cylinder 1 inside the right side portion thereof as described below, and a tip is inserted into the inner cylinder 2. A detailed description will be given below so that the nozzle body 3 is movably supported in the outer cylinder 1 and that the nozzle body 3 is moved back and forth. Is configured to.

First, the outer cylinder 1 will be described. The outer cylinder 1 includes a base cylinder portion 11 having a substantially cylindrical shape, a diameter-enlarged cylinder portion 12 at its front end, and a cylinder end portion 13 which is concentric with the rear end side and slightly expanded. I have it. A male screw 14 is formed on the outer periphery of the end opening of the diameter-expanding tubular portion 12, and the inner diameter of the base tubular portion 11 is concentrically reduced at the substantially center thereof, and the inner peripheral surface thereof is the nozzle body 3 The valve seat 36 and the valve body 36 of FIG. In addition, guide grooves 16 and 16 are formed along the axis in front of the valve seat 15 to prevent the nozzle body 3 from rotating (see FIG. 3). A thin groove 17 is provided around the outer periphery of the cylinder end portion 13 of the outer cylinder 1, and although not shown in detail in the drawings, the narrow groove 17 is arranged at substantially equal angular intervals along the circumferential direction. It is formed so that an E-shaped retaining ring 5 for mounting a drive screw body 4 constituting a drive mechanism, which will be described later, is fitted therein. In this example, the lower portion of the joining portion between the base cylinder portion 11 and the cylinder end portion 13 is opened to form a supply hole 18, and a grip portion 19 is continuously provided below the supply hole 18, and the end portion thereof is illustrated. It is configured to introduce water into the supply hole 18 through the open hose connection port and the known on-off valve 20.

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 to the inner side of the diameter-expanded cylinder portion 12. However, the inner cylinder 2 is fixed to the expanded diameter cylindrical portion 12 via the outer peripheral surface of the outer peripheral flange 21. Further, a proper number of through holes 22 are penetrated 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.

Further, a shower plate 6 formed in a disk shape with a large number of shower holes is provided on the opening end surface of the diameter-expanding tubular portion 12, and a ring-shaped nut 8 is attached to a male screw 14 via a packing 7. It is attached by screwing. However, the center of the shower plate 6 is opened, folded back toward the inside (left) with a predetermined taper angle, and joined to the right end portion of the inner cylinder 2. In this way, in the nozzle of this example, the outer flow 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.

Now, the nozzle main body 3 which is formed in a substantially cylindrical shape and is provided with the main body flow path H inside the outer cylinder 1 from the base cylinder part 11 to the expanded diameter cylinder part 12 is concentric. The distal end portion is inserted inside the inner cylinder 2 as described below and is supported so as to be movable back and forth. That is, the nozzle body 3 has its tip end portion reduced in diameter with the same taper as the front end portion of the inner cylinder 2, provided with an appropriate number of through holes 31 in the taper portion, and further enlarged in diameter at its tip end. A bar 33 having a head 32 is provided in a protruding shape and is inserted into the inner cylinder 2 and the shower plate 6. Further, in this state, the inner distribution passage U is formed between the outer peripheral surface of the tip end portion of the nozzle body 3 and the inner peripheral surface of the inner cylinder 2. Therefore, in this example, the main body distribution passage H and the through hole are formed. 31 and communicates with the outside through the inner distribution channel U. On the outer periphery of the parallel pipe portion of the inner cylinder 2, a ring-shaped portion having a groove is formed near the through hole 31, and an O-ring 34 as a closing member is interposed so that the inner cylinder 2 is watertight. Is held. The position of the O-ring 34 is set so as to be located slightly ahead of the rear end surface portion of the inner cylinder 2 when the nozzle body 3 is retracted.

Further, a protrusion 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 (slide) along the guide groove 16 described above. It is configured. An annular valve body 36 is provided around the outer periphery of the protrusion 35, and is watertight to the valve seat 15 with an O-ring 36a interposed. 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, and is located rearward of the valve seat 15 when it is retracted to the maximum. Is set.

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 circulation path H. However, a 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. Two water supply holes 38 are formed in the radial direction slightly forward of the plug 37 to communicate the main body flow path H with the outside. In addition, an annular portion having a groove is provided around the outer periphery of the water supply hole 38, O-rings 39 and 40 are interposed, and the sleeve 9 fixed to the inner rear side of the base tube portion 11 is provided. Watertightness with the inner surface 9a is maintained.

In this example, when the nozzle main body 3 is advanced to the maximum extent, only the O-ring 39 from the rear end is brought into contact with the inner surface 9a of the sleeve, and at that position, the inside of the outer cylinder 1 and the nozzle main body 9a. The water is introduced from the water supply hole 38 through the supply chamber (space) 18a formed by the outer periphery of the water supply port 3 and the outer periphery of the water supply port 3. In addition, in the state of FIG. 1, the sprinkling is fog, but when the head 32 is retracted and enters inward, a straight sprinkling form is obtained. Further, when the nozzle body 3 is further retracted, the O-ring 40 near the front of the water supply hole 38 is brought into contact with the inner surface 9a of the sleeve 9, and the supply of water to the water supply hole 38 is cut off. At this time, the valve element 36 (O-ring 36a) also retracts at the same time, but in this example, both O-rings 36a, 40 straddle the left end of the valve seat 15 and the inner ends of the inner surface 9a of the sleeve, and the supply hole. The supply of water from 18 is stopped. Then, when the valve body 36 is further retracted, the valve body 36 reaches the inside of the supply chamber 18a, the supply chamber 18a and the outer circulation path S are communicated with each other, and it is configured to switch to shower injection (see FIG. 2).

Next, the drive mechanism for moving the nozzle body 3 back and forth and its operating means, which are the gist of the present invention, will be described. In this example, a drive screw body 4 that is formed in a bottomed tubular shape with an internal thread 41 on the inner circumference and that moves the nozzle body 3 back and forth is rotatably mounted inside the tubular end portion 13. The thread 37a of the plug 37 is screwed into the screw 41. However, the driving screw body 4 is provided with a ring-shaped groove 42 on the outer periphery near the rear end portion, and the inner periphery of the E-shaped retaining ring 5 is fitted into the groove 42, so that the driving screw body 4 While restricting the movement in the axial direction with respect to the inner side of the outer cylinder 1, only the rotation is possible. As a result, when the drive screw body 4 is rotated, the nozzle body 3 moves forward and backward in the outer cylinder 1 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 fixed to the drive screw body 4 with a screw 10a. In this example, when the operation member 10 is rotated to the right, the nozzle body 3 moves backward with respect to the outer cylinder 1 without rotating, and conversely, when the operation member 10 rotates to the left, the nozzle body 3 moves forward. Is a triple-threaded screw and is set on the lead that takes up the entire stroke in almost one rotation.

In the nozzle of this embodiment, however, a hose is connected to a hose connection port (not shown), and the grip portion 19 is held by, for example, the right hand to push and open the on-off valve 20. When the nozzle body 3 is located at the frontmost position (FIG. 1), water is sprayed in the form of mist. Then, when the operation member 10 is rotated to the right with the left hand and the nozzle body 3 is retracted, the water circulation path is the same, but the head 32 retracts, so that the form of water spray becomes straight. Further, if the operating member 10 is further rotated to the right and retracted, the sprinkling is temporarily stopped as described above. However, if the operating member 10 is further rotated to the right and retracted, the valve element 36 is closed. It is located behind the seat 15 and opens the valve seat 15. Therefore, in this state, water is sprayed from the shower plate 6 through the supply hole 18, the supply chamber 18a, the inner side of the valve seat 15 and the outer flow path S (see FIG. 2).

As described above, according to the nozzle of this embodiment, the switching of the water spraying form can be rationalized, and the switching can be operated behind the outer cylinder 1, so that the hands and clothes are prevented from getting wet. .

In the above embodiment, the screws 37a and 41 are multi-threaded and the leads are set large, so that the operability is extremely good. Although not shown in the drawing, on the rear (back) surface of the operation member 10, there are a counterclockwise arrow, a rightward arrow, and a counterclockwise arrow, a rightward arrow, and a right arrow. It is advisable to mark with a stamp or the like. In this way, the user can select the sprinkling form while visually checking the display in the case of the normal use form, which is also effective in preventing the sprinkling form from being unintentionally and extremely convenient. Good.

In the above embodiment, the driving mechanism of the nozzle body 3 is a screw pair (screw structure) that moves back and forth without rotating about the axis of the nozzle body, but it moves forward and backward while rotating about the axis. It can also have a structure. For example, the nozzle body has a structure in which it is directly screwed into the rear end portion of the outer cylinder, the operating member is arranged in the rear end portion of the nozzle body, and the operating member is appropriately rotated. Further, the male screw provided on the plug 37 in the above-described embodiment may be a so-called positive cam structure in which the male screw is a protrusion that is loosely fitted to the female screw 41. In the above embodiment, the drive mechanism for moving the nozzle body back and forth is the screw pair, but the present invention is not limited to this. Any mechanism (structure) that can move the nozzle body back and forth relative to the outer cylinder along the axis thereof may be used. The nozzle body may be slidable while being kept watertight by simply operating it at the rear so that it can be stopped at any position.

[0021]

[Effect of device]

 As described above, according to the present invention, since the operation means for switching the sprinkling mode is provided at the rear end portion of the outer cylinder, a desired sprinkling mode can be selected without wetting hands or clothes. . In this case, if the drive mechanism for the back-and-forth movement of the nozzle body is constructed by a screw pair, it can be operated easily without complicating the structure, and its practical effect is remarkable.

[Brief description of drawings]

FIG. 1 is a front central cross-sectional view, partly omitted, of an embodiment embodying a water spray nozzle according to the present invention.

FIG. 2 is a front center cross-sectional view showing a main part in a state where the nozzle body is retracted in FIG.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a front center sectional view of a conventional water spray nozzle.

[Explanation of symbols]

 1 Outer Cylinder 2 Inner Cylinder 3 Nozzle Body 4 Drive Screw Body 5 E-Type Retaining Ring 10 Operating Member (Operating Means) 13 Cylinder End 34 O-Ring Packing (Closing Member) 37 Plug 37a Screw Thread 41 Drive Screw Body Female Thread S Outside distribution route H Main distribution route U Inside distribution route

Claims (2)

[Scope of utility model registration request] 1. An outer cylinder, an inner cylinder fixed to the inner cylinder to form an outer flow path between the outer cylinder and the main body, and a main body flow path is provided inside, and a tip is movable back and forth in the inner cylinder. A nozzle body that is inserted into the inner cylinder to form an inner flow path between the inner cylinder and the inner cylinder, and a closing member that blocks communication between the outer flow path and the inner flow path. In a sprinkling nozzle configured to switch the sprinkling form by selectively passing the water ejected according to the amount of the amount through the outer distribution passage or the inner distribution passage, the nozzle body is supported in its outer cylinder so as to be movable back and forth. The drive mechanism for moving the nozzle back and forth is provided behind the nozzle body.
A watering nozzle, characterized in that the operating means of the drive mechanism is provided at the rear end of the outer cylinder. 2. The sprinkling nozzle according to claim 1, wherein a drive mechanism for moving the nozzle body back and forth is constituted by a screw pair.