Jet nozzle

Abstract

To provide a jet nozzle, in spite of being constituted simply, capable of jetting pressure fluid in a direction orthogonal to a nozzle axial direction.SOLUTION: A jet nozzle comprises: a tubular nozzle body 10 connected to the other end of a hose with one end connected to a supply source of a pressure fluid; and a cap 20 with a semi-spherical tip 22 detachably attached to the nozzle body 10. The nozzle body 10 comprises: two or more communication holes 15 that radially guide, in a direction orthogonal to an axis J, the pressure fluid introduced from the hose 2; and one or more pairs of O-rings 16,17 that are fitted on an outer peripheral surface side of the nozzle body 10 so as to be spaced apart from each other in the axis J direction so as to interpose the communication holes 15. The cap 20 is formed with an introduction path 23, and includes one or more injection holes 24 that communicate with the introduction path 23 and are smaller in number by one or more than the communication holes 15, wherein when the cap 20 is fitted onto the nozzle body 10, the introduction path 23 communicates with the communication holes 15, with an inner wall surface of the tubular body portion 21 being in pressure contact with the one or more pairs of O-rings 16,17.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an injection nozzle, and more particularly to an injection nozzle that injects pressurized fluid in a direction perpendicular to the nozzle axis. [Background technology]

[0002] 2. Description of the Related Art Conventionally, various cleaning nozzles that spray cleaning liquid or the like as a high-pressure water stream (pressurized fluid) have been proposed in the cleaning industry.

[0003] Furthermore, various shapes and other features have been proposed for such cleaning nozzles depending on the object to be cleaned, but most of them spray pressurized fluid such as cleaning liquid along the axial direction of the tip of the cleaning nozzle.

[0004] On the other hand, there is also known a cleaning nozzle that jets cleaning liquid supplied from a supply source in such a way that the liquid turns back diagonally backward intersecting the axial direction of a tubular nozzle body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-103191 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the above-mentioned cleaning nozzle requires the use of multiple parts, namely a lock nut, a nozzle ring, an intermediate ring, and a nozzle head, for the nozzle body, which results in high parts costs and makes maintenance difficult.

[0007] An object of the present invention is to provide an injection nozzle which is simple in configuration but is capable of injecting pressurized fluid in a direction perpendicular to the nozzle axial direction. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an injection nozzle comprising a tubular hose having one end connected to a supply source of pressurized fluid, a tubular nozzle body connected to the other end of the hose, and a cap having a hemispherical tip portion removably attached to the nozzle body, wherein the nozzle body comprises two or more communication holes that radially guide the pressurized fluid introduced from the hose in a direction perpendicular to an axis, and one or more O-rings attached to the outer peripheral surface of the nozzle body at a distance in the axial direction to sandwich the communication holes, and the cap has an inner wall surface of a tubular body portion that is in pressure contact with the pair or more O-rings when attached to the nozzle body to form an introduction passage that communicates with the communication hole, and comprises an injection hole that communicates with the introduction passage and is at least one less than the number of the communication holes.

[0009] According to the configuration of the present invention, an injection nozzle that is connected to a tubular hose and sprays pressurized fluid radially in a direction perpendicular to the axis can be constructed from two components, the nozzle body and the cap, and can have a simple configuration in which watertightness is maintained by an O-ring. Effect of the Invention

[0010] According to the present invention, it is possible to eject pressurized fluid in a direction perpendicular to the nozzle axis direction, even with a simple configuration. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a front view of the injection nozzle according to the embodiment of the present invention. [Diagram 2] 1A and 1B show an injection nozzle according to an embodiment of the present invention, in which FIG. 1A is a longitudinal sectional view of the injection nozzle, and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Next, an injection nozzle according to an embodiment of the present invention will be described with reference to the drawings.

[0013] In Figures 1 and 2, the injection nozzle 1 comprises a tubular hose 2 having one end connected to a supply source of pressurized fluid (not shown), a tubular nozzle body 10 connected to the other end of the hose 2, and a cap 20 having a hemispherical tip portion removably attached to the nozzle body 10.

[0014] The use of hose 2 is not particularly limited, and one end of the hose 2 may be connected, for example, to a household water faucet as a source of pressurized fluid (not shown) via a rubber hose and joint members (neither of which are shown), or to a tank or the like that stores cleaning liquid as a supply source (not shown) via a hose and pump (neither of which are shown).

[0015] In this embodiment, the hose 2 is made of a copper tube with an inner diameter of about 1 cm, and it is preferable to use a tube that has a certain degree of freedom to maintain its shape and allow plastic deformation so that the user can manually bend and return it to an appropriate angle as needed.

[0016] For the nozzle body 10, it is preferable to use, for example, a metal that is easy to mold or process and does not easily corrode (or a metal that is easy to maintain).

[0017] The nozzle body 10 has three recessed grooves 11, 12, and 13 formed therein and spaced apart from each other by approximately equal widths in the direction of the axis J.

[0018] The groove 12 sandwiched between the grooves 11 and 13 is formed with two or more communication holes 15 (at four equal positions in this embodiment) which communicate with the internal supply passage 14 of the nozzle body 10 and radially guide the pressurized fluid introduced from the hose 2 in a direction perpendicular to the axis J.

[0019] A pair of O-rings 16, 17 made of rubber or resin or the like, which have elasticity and high sealing properties, are fitted in the grooves 11, 13. This prevents the O-rings 16, 17 from accidentally falling off when the cap 20 is inserted, removed, or rotated. The number of grooves 11, 12 and O-rings 16, 17 may be any number greater than or equal to one each, depending on, for example, the application of the injection nozzle 1 and the pressure of the pressurized fluid.

[0020] The nozzle body 10 is integrally formed with a flange 18 that is located on the supply source side and protrudes in an annular shape. The nozzle body 10 has an outer diameter, excluding the three recessed grooves 11, 12, and 13, on the tip side of the flange 18, that is slightly (for example, 0.5 mm or less) smaller than the inner diameter of the cap 20.

[0021] The cap 20 is made of synthetic resin or the like, and includes a cylindrical body portion 21 and a substantially hemispherical tip portion 22 that is continuous with the body portion 21 .

[0022] When the cap 20 is attached to the nozzle body 10, O-rings 16, 17 are pressed against the inner wall surface of the cap 20 inside the body portion 21, thereby forming a ring-shaped introduction passage 23 centered on the recessed groove 12.

[0023] A tapered surface 25 is provided on the inner wall surface of the opening edge located at the lower end of the body portion 21 to reduce the load applied to the O-rings 16, 17 in the insertion direction when the cap 20 is attached (inserted) into the nozzle body 10, thereby preventing the O-rings 16, 17 from accidentally falling off from the grooves 12, 13.

[0024] The body portion 21 is provided with an injection hole 24 (here, one) 24 that communicates with the introduction passage 23 when the cap 20 is attached to the nozzle body 10 and that is one or more less than the communication holes 15 .

[0025] The tip portion 22 is provided with a leakage hole 26 on the tip side (here, near the apex of the hemisphere) of the O-ring 17 that is located on the tip side of the pair or more of O-rings 16, 17.

[0026] The two or more communication holes 15 have the same hole diameter, and the opening area of ​​one injection hole 24 is smaller than the opening area of ​​the total hole diameter of the two or more communication holes 15 .

[0027] In the above configuration, the nozzle body 10 is fixed to the other end of the hose 2, and the cap 20 is detachably attached to the nozzle body 10 and is rotatable around the axis J.

[0028] Then, the cap 20 is inserted into a desired injection position (for example, inside an air conditioner, etc.), and the pressurized fluid can be injected from the injection hole 24 by supplying the pressurized fluid from a supply source.

[0029] In this case, for example, if the pressurized fluid leaks from O-ring 16 to the supply source side of cap 20 due to aging or an unexpected situation, the fluid leaks out from tapered surface 25. Similarly, if the pressurized fluid leaks from O-ring 17 to the tip side of cap 20, the fluid leaks out from leakage hole 26 to the outside.

[0030] This allows the user to easily check for defects in the O-rings 16, 17 caused by deterioration over time or the like.

[0031] Thus, the injection nozzle 1 of this embodiment is an injection nozzle 1 comprising a tubular hose 2 having one end connected to a supply source of pressurized fluid, a tubular nozzle body 10 connected to the other end of the hose 2, and a cap 20 having a semi-spherical tip 22 detachably attached to the nozzle body 10. The nozzle body 10 has two or more communication holes 15 for radially guiding the pressurized fluid introduced from the hose 2 in a direction perpendicular to the axis J, and a pair of caps 20 arranged to sandwich the communication holes 15 on the outer circumferential surface side of the nozzle body 10. and one or more O-rings 16, 17 mounted spaced apart in the direction of axis J. When the cap 20 is mounted on the nozzle body 10, the inner wall surface of the tubular body portion 21 is pressed against the pair of O-rings 16, 17 to form an introduction passage 23 that communicates with the communication hole 15, and the cap 20 is provided with an injection hole 24 that communicates with the introduction passage 23 and is at least one less than the communication hole 15. Due to this simple configuration, it is possible to inject pressurized fluid in a direction perpendicular to the nozzle axis.

[0032] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit and technical concept of the present invention. Such modifications will be described below in order.

[0033] In the above embodiment, a case has been described in which one injection hole 24 is provided for four communication holes 15, but for example, a plurality of injection holes 24 may be provided in the body portion 21. In this case, the hole diameters of the injection holes 24 may be the same or different, but at least the opening area of ​​the total hole diameters must be smaller than the opening area of ​​the total hole diameters of two or more communication holes 15.

[0034] Similarly, the communication holes 15 and the injection holes 24 may be arranged at equal intervals such that the ratio of their numbers is 3:1 or 4:1 while maintaining the relationship in terms of the total opening areas.

[0035] Furthermore, the shape of the injection hole 24 may be a substantially circular cross section or an ellipse. Also, for example, the inner wall surface of the injection hole 24 may be spiral, the opening area may be narrowed toward the outside, or any other shape may be used depending on the purpose of use (for example, to produce a mist).

[0036] The embodiments of the present invention have been described above in detail with reference to the accompanying drawings. However, it goes without saying that the scope of the technical idea of ​​the present invention is not limited to the embodiments described here. It is clear that a person having ordinary knowledge in the technical field to which the present invention belongs can make various changes, modifications, combinations, etc. within the scope of the technical idea of ​​the present invention described in the claims. Therefore, the technologies subsequent to these changes, modifications, combinations, etc. naturally belong to the scope of the technical idea of ​​the present invention. [Explanation of symbols]

[0037] 1 Injection nozzle 2 Hose 10 Nozzle body 11 Groove 12 Groove 14 Internal supply channel 15 Communication hole 16 O-ring 17 O-ring 18 Flange 20 Cap 21 Body 22 Tip 23 Introductory path 24 Injection hole 25 Tapered surface 26 Leakage J axis

Claims

1. A tubular hose having one end connected to a supply source of pressurized fluid; a tubular nozzle body connected to the other end of the hose; a cap having a hemispherical tip portion removably attached to the nozzle body; An injection nozzle comprising: The nozzle body includes: two or more communication holes for radially guiding the pressurized fluid introduced from the hose in a direction perpendicular to the axis; a pair of or more O-rings attached to an outer peripheral surface side of the nozzle body so as to sandwich the communication hole and be spaced apart in the axial direction; Equipped with The cap is When the nozzle is attached to the nozzle body, an inner wall surface of the tubular body portion is pressed against the pair or more of O-rings to form an introduction passage communicating with the communication hole, and the nozzle is provided with an injection hole which is in communication with the introduction passage and is one or more less than the communication hole. An injection nozzle characterized by:

2. 2. The injection nozzle according to claim 1, The cap is a leak hole formed on the tip side of the one or more O-rings located on the tip side, An injection nozzle characterized by:

3. The injection nozzle according to claim 1 or 2, The two or more communicating holes have the same hole diameter, When there are a plurality of the injection holes, the hole diameters of the injection holes are the same, The injection hole has an opening area of ​​a total hole diameter smaller than an opening area of ​​a total hole diameter of the two or more communication holes. An injection nozzle characterized by:

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