JP4454077B2 - Fluid ejection gun - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fluid ejection gun used for ejecting fluid such as gas, liquid, or a mixture of gas and liquid.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a cleaning tool, a cleaning tool that rubs a dirt with a cleaning liquid while being rubbed with a rotating brush by ejecting the cleaning liquid while rotating the brush with the flow of the cleaning liquid has been used.
Another cleaning tool connected to a low-pressure washer is a detergent that is sucked in at a pressure generated when water is supplied from the low-pressure washer, mixed with water and detergent, and foamed and ejected. ing.
[0003]
[Problems to be solved by the invention]
By the way, in the case of removing dirt by the rotating rotary brush described above, there is a problem that the back side portion of the protrusion cannot be washed by rotating the brush in one direction, resulting in uneven washing.
On the other hand, in the case of a gun that mixes water and detergent and foams and jets, there is a problem that if the gun is connected to a high-pressure washing machine, the detergent cannot be sucked in and cannot be foamed. For this reason, in the case of foaming, it is connected to a low pressure washer, and in the case of rinsing foam, it has to be connected to a high pressure washer in order to increase its efficiency, which is very troublesome.
[0004]
Therefore, purpose of the invention is a benzalkonium provide a fluid spray gun which can be cleaned without causing washing unevenness.
[0005]
[Means for Solving the Problems]
To achieve the above Symbol purpose, the fluid spray gun according to claim 1 of the present invention comprises a flexible nozzle and flaring disposed radially outwardly of said nozzle comprising a cylindrical body of the guide The nozzle is swung along the guide by passing the fluid to the inner peripheral side of the nozzle and ejecting the fluid from the nozzle, and the tip of the guide is annularly formed radially outward of the nozzle. The brush is disposed at a forward position of the fluid ejected from the nozzle swirling along the guide, and the brush has a U-shaped cross section. In a circular shape formed by inserting a number of synthetic resin bristles into a metal holder and crimping the holder, the tip of the guide is fitted inside the holder, Outside the holder and the guide It is characterized in that it comprises covered with a Kutsugaezai.
[0006]
As described above, since the brush arranged annularly on the outer side in the radial direction of the nozzle is arranged at the forward ejection position of the fluid ejected from the nozzle swirling along the guide, the brush is ejected from the nozzle. When it hits the fluid, it is bent in the direction of expanding the diameter, and when it escapes from the fluid, it returns to the direction of decreasing the diameter, and the position bent in the direction of expanding the diameter in this way sequentially turns with the turning fluid. As a result, the annular brush moves so as to repeat the diameter expansion and contraction as a whole.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
A fluid ejection gun according to a first embodiment of the present invention will be described below with reference to FIG.
[0010]
The fluid ejection gun 11 according to the first embodiment ejects fluid such as gas, liquid, or a mixture of gas and liquid, and includes a nozzle 12 formed of a flexible cylindrical body, and a diameter of the nozzle 12. A guide 13 having a circular cross section disposed on the outer side in the direction and an attachment portion 14 for attaching the nozzle 12 to the guide 13 are passed through the nozzle 12 so that the fluid passes through the nozzle 12 and is ejected from the nozzle 12. Thus, the nozzle 12 is swung along the inner surface of the guide 13.
[0011]
The mounting portion 14 has a through hole (not shown) formed in the axial direction inside, and a first male screw portion 16, a hexagonal input portion 17, and a second male screw portion 18 arranged in the axial direction outside. ing.
[0012]
The nozzle 12 has a nozzle body 20 composed of a cylindrical body integrally formed with a constant thickness with a flexible material of synthetic resin such as nylon, Teflon, polyurethane, and polypropylene, for example. The inner peripheral portion is fixed to the attachment portion 14 at one end so as to communicate with the through hole.
[0013]
Further, the nozzle 12 has a coil spring 21 that covers the nozzle body 20 from the outside by fitting the nozzle body 20 on the inside to reinforce against rupture and the like, and the coil spring 21 also has one end thereof. The part is fixed to the attachment part 14.
[0014]
Furthermore, the nozzle 12 includes a cylindrical synthetic resin rotating body 22 rotatably provided on the nozzle body 20 by fitting a tip portion protruding from the coil spring 21 of the nozzle body 20 to the inside. There are weight portions 23 and 24 made of synthetic resin that are fixed to the nozzle body 20 by fitting the tip portions protruding from the coil springs 21 of the nozzle body 20 so as to be arranged on both sides of the rotating body 22 ing.
[0015]
These weight portions 23 and 24 determine the position of the rotating body 22 in the axial direction with respect to the nozzle main body 20 and give weight to the distal end portion in order to efficiently turn the nozzle main body 20 (described later). The rotating body 22 is a portion that mainly contacts the guide 13 when the nozzle 12 turns along the guide 13, and prevents the coil spring 21 from being worn.
[0016]
The guide 13 is made of a synthetic resin, and is formed with a female thread portion 26 for screwing the first male thread portion 16 of the nozzle 12 into an inner peripheral portion on one end side, and a cylinder whose diameter increases as the distance from the female thread portion 26 increases. It has a shape (so-called trumpet type).
[0017]
A brush 28 is provided at the tip of the guide 13 so as to be annularly arranged on the radially outer side of the nozzle 12.
[0018]
The brush 28 has, for example, a large number of synthetic resin bristles 30 erected in a state where a part thereof is inserted into a metal holder 29 having a U-shaped cross section perpendicular to the length direction, The holding tool 29 is crimped from both sides to fix the bristles 30, and after the lengths of the bristles 30 are aligned, the holding tool 29 is deformed into a circular shape.
[0019]
By inserting the guide 13 from the small diameter side into the brush 28 formed in this way, the tip of the guide 13 is fitted into the brush 28. In this state, the brush 28 is fixed to the guide 13 by covering the outer side with a rubber covering material 32.
[0020]
In this state, the brush 28 extends in a direction in which all the hairs 30 are separated from the guide 13 along the axial direction of the guide 13.
[0021]
The nozzle 12 and the guide 13 are integrated by inserting the nozzle 12 into the guide 13 to which the brush 28 is attached and screwing the first male screw portion 16 and the female screw portion 26 together. At this time, the brush 28 is annularly arranged outside the nozzle 12 in the radial direction.
[0022]
Then, by connecting a hose or the like from the fluid supply source to the second male screw portion 18 of the nozzle 12 in this state, the fluid supplied from the fluid supply source is allowed to pass to the inner peripheral side of the nozzle 12 and from the nozzle 12. At the same time, the nozzle 12 is swung along the guide 13 so as to draw a circular trajectory while the tip side is inclined outward. At this time, the brush 28 is placed at a position before the ejection of the fluid ejected from the nozzle 12. In other words, the positional relationship between the brush 28 and the nozzle 12 is set so that the fluid ejected from the nozzle 12 collides with the bristles 30 of the brush 28 from the inside.
[0023]
According to the fluid ejection gun 11 of the first embodiment configured as described above, when the fluid passes through the inner peripheral side of the nozzle 12 and is ejected from the tip thereof, the nozzle 12 becomes a guide 13 having a circular cross section. As a result, the brush 28 is swung so as to draw a circular trajectory while the tip side is inclined outward, and as a result, the brush 28 is bent in a direction of expanding the diameter when it hits the fluid ejected from the nozzle 12, If it escapes, it will return to the direction which diameter-reduces, and the position bent in the direction which expands in this way will turn sequentially with the turning fluid. As a result, the annular brush 28 moves so as to repeat the expansion and contraction as a whole.
Therefore, washing can be performed without causing unevenness of washing as in the case of rotational movement.
[0024]
Next, a fluid ejection gun according to a reference technique will be described below with reference to FIG.
[0025]
The fluid ejection gun 41 of the reference technology is used by being connected to a high-pressure washing machine (high-pressure fluid supply source) (not shown), and a high-pressure ejection section 42 that ejects a fluid supplied from the high-pressure washing machine at a high pressure. A low pressure jet 43 for jetting the fluid supplied from the high pressure washer at a low pressure and foaming the jetted fluid, a connecting portion 44 for connecting the high pressure jet 42 and the low pressure jet 43, and a connecting portion 44 A lever (switching unit) 45 for switching a fluid supply destination from the high pressure washer to either one of the high pressure jet unit 42 and the low pressure jet unit 43 and an internal channel switching unit (switch unit) (not shown). It has.
[0026]
The high-pressure ejection part 42 includes a nozzle 47 made of a flexible cylindrical body, a circular guide 48 arranged on the outer side in the radial direction of the nozzle 47, and an attachment part 49 for attaching the nozzle 47 to the guide 48. The nozzle 47 is swung along the guide 48 by passing the fluid to the inner peripheral side of the nozzle 47 and ejecting the fluid from the nozzle 47.
[0027]
The mounting portion 49 is formed with a through hole (not shown) formed in the axial direction inside and a first male screw portion 51, a hexagonal input portion 52, and a second male screw portion 53 arranged in the axial direction outside. ing.
[0028]
The nozzle 47 has a nozzle body 55 made of a cylindrical body that is integrally molded with a flexible material made of a synthetic resin such as nylon, Teflon, polyurethane, and polypropylene. The one end side is fixed to the attachment portion 49 in a state where the inner peripheral portion is communicated with the through hole.
[0029]
The nozzle 47 has a coil spring 56 that covers the nozzle body 55 from the outside by fitting the nozzle body 55 on the inside to reinforce against rupture and the like, and the coil spring 56 also has one end thereof. The portion is fixed to the attachment portion 49. The coil spring 56 covers the nozzle 47 over its entire length.
[0030]
Further, the nozzle 47 has a cylindrical shape and a synthetic resin weight portion 57 fixed to the coil spring 56 by fitting the tip end portion of the coil spring 56 inside, and the nozzle 47 has a cylindrical shape and the coil spring 56. And guide members 58 and 59 made of synthetic resin which are fixed at a predetermined position in the middle of the coil spring 56 by fitting them inward.
[0031]
The weight portion 57 gives a weight to the tip portion so that the nozzle body 55 can be efficiently turned (described later). The guide bodies 58 and 59 are portions that mainly contact the guide 48 when the nozzle 47 is swung along the guide 48, and are for preventing wear of the coil spring 56.
[0032]
The guide 48 is made of a synthetic resin, and has an internal thread portion 61 for screwing the first male screw portion 51 of the nozzle 47 on the inner peripheral portion on one end side. The guide 48 has a cylindrical shape whose diameter increases as the distance from the internal thread portion 61 increases. A guide main body 62 having a so-called trumpet type and a metal inner guide body 64 fixed with screws 63 so as to cover the inner side of the front end portion of the guide main body 62 are provided.
[0033]
When the fluid passes through the inner peripheral side of the nozzle 47 and is ejected from the tip thereof, the nozzle 47 is guided by the guide 48 having a circular cross section, and the tip side is inclined outward. However, it will be swung so that a circular locus may be drawn, and fluid will be ejected to the cylindrical shape which expands in diameter.
[0034]
Here, the high-pressure jet portion 42 has a flow passage cross-sectional area of the nozzle 47 smaller than that of the low-pressure jet portion 43 (described later). It will be ejected.
[0035]
The low-pressure jet part 43 includes a nozzle 67 in which a plurality of jet holes 66 are arranged at an equal pitch on a circle, and a first collision part 68 that is provided at the tip of the nozzle 67 and has a shape that increases in diameter as the distance from the nozzle 67 increases. And a cylindrical second collision portion 70 attached so as to cover the outside of the nozzle 67 and having a through hole 69 formed therein.
[0036]
When the low-pressure ejecting portion 43 allows the fluid to pass through the inner peripheral side of the nozzle 67 and ejects the fluid so as to be parallel to each other from the plurality of ejecting holes 66, the fluid collides with the first collision portion 68 to expand the diameter. It will be made to collide with the inside of the 2nd collision part 70 further. At this time, the fluid entrains and introduces air introduced from the through hole 69 of the second collision portion 70.
[0037]
Here, the low-pressure jet portion 43 has a flow passage cross-sectional area including a plurality of jet holes 66 larger than the flow passage cross-sectional area of the nozzle 47 of the high-pressure jet portion 42, and as a result, is higher than the high-pressure jet portion 42. The fluid is ejected at a low pressure.
[0038]
The connecting part 44 connects the high-pressure jet part 42 and the low-pressure jet part 43 in parallel, and has an attachment port 72 on the opposite side to the high-pressure jet part 42. Connect. The connecting portion 44 is provided with a switching lever 45 for supplying the fluid from the high pressure washer to one of the high pressure jet portion 42 and the low pressure jet portion 43 and an internal flow path switching portion (not shown). .
[0039]
According to the fluid jet gun 41 of the reference technology having the above-described configuration, the fluid is supplied to the high-pressure washing machine, and the supply destination of the fluid from the high-pressure washing machine is the low-pressure jet part 43 by the operation of the lever 45. Therefore, the detergent can be mixed well with the water by the pressure of the water supply, and can be foamed well. On the other hand, by setting the fluid supply destination of the high-pressure washing machine to the high-pressure ejecting portion 42 by operating the lever 45, the fluid is ejected at a high pressure. It becomes impossible to rinse, and only water is ejected at a high pressure, so that the rinsing can be satisfactorily performed. Such switching can be easily performed with the lever 45 of the fluid ejection gun 41.
Therefore, foaming and rinsing can be easily performed.
[0040]
In addition, you may attach the brush 28 similar to 1st Embodiment to the guide 48 of the high voltage | pressure ejection part 42 of a reference technique .
[0041]
【The invention's effect】
As described in detail above, according to the fluid ejection gun of the first aspect of the present invention, the fluid ejected from the nozzle that is circularly arranged on the radially outer side of the nozzle is swung along the guide. Since the brush is disposed at the front position, the brush is bent in the direction of expanding when it hits the fluid ejected from the nozzle, returns to the direction of reducing the diameter when it escapes from the fluid, and is bent in the direction of expanding the diameter in this way. The position will swivel sequentially with the swirling fluid. As a result, the annular brush moves so as to repeat the diameter expansion and contraction as a whole.
Therefore, washing can be performed without causing unevenness of washing as in the case of rotational movement.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a fluid ejection gun according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a fluid ejection gun according to a reference technique .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Fluid ejection gun 12 Nozzle 13 Guide 28 Brush 41 Fluid ejection gun 42 High pressure ejection part 43 Low pressure ejection part 45 Lever (switching part)

Claims (1)

A nozzle formed of a flexible cylindrical body and a trumpet type guide disposed on the radially outer side of the nozzle, and the fluid is passed through the inner peripheral side of the nozzle to be ejected from the nozzle. In the fluid ejection gun swirled along the guide,
The tip of the guide is provided with a brush so as to be annularly arranged on the radially outer side of the nozzle,
The brush is disposed at a forward ejection position of a fluid ejected from the nozzle swirling along the guide ,
The brush is a circular one formed by inserting a number of synthetic resin bristles into a metal holder having a U-shaped cross section and caulking the holder.
A fluid ejection gun , wherein a tip portion of the guide is fitted inside the holder, and a covering material is put on the outside of the holder and the guide .

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