JP2002017596A - Shower device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the comfortability of shower bathing by constituting the shower device in such a manner that hot-water showers reach the foot segments of a bathing person. SOLUTION: Various kinds of single or plural direct injection nozzles 10 are disposed in addition to conventional shower nozzles 9 at the front ends of both nozzle arms 7 and near the same. As a result, the hot-water showers eventually strike against the foot segments and consequently the hot-water showers stroke evenly against the entire part of the body surface of the lower half body and feet, thereby realizing the comfortable and healthy massage bathing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shower device for taking a shower.

[0002]

2. Description of the Related Art Conventionally, this type of shower device is disclosed in
There was one as described in JP-A-28-656. As shown in FIG. 8, the shower device 33 is installed in a bathroom 5 inside or outside the house or in a dedicated shower room, and is spread to a certain extent to a bather 2 sitting on a chair 3 and taking a shower. A plurality of shower nozzles 9 and 11 sprayed with a spray angle (for example, the spray angle is in a range of about 30 ° to 50 °) are directed toward the front and rear faces of the bather, and at regular intervals, the nozzle arm 7 or It was configured to be installed in a part of the shower device 32. Then, the hot water spray shower sprayed from the plurality of shower nozzles 9 and 11 covers the upper, lower, upper and lower body portions of the bather 2 and takes a shower bath.

[0003]

However, bathrooms in Japan are generally located on the north side, and especially in the winter and the middle season, the room temperature in the bathroom is low, the humidity is high, and the bathroom is cold. In addition, even if bathing is performed sequentially, if the bathing interval is interrupted, the interior of the bathroom is easily cooled down. Moreover, since the bather enters the bathroom naked, the perceived temperature is lower and more sensitive. In such a situation, in the conventional shower device, a plurality of spray particles having a relatively small spray particle size from the front-back direction of the lower body to the bather have a spray pattern of approximately 30 to 50 degrees in a substantially conical shape. And a hot water shower with a plurality of the same type of shower nozzles arranged at regular intervals. Therefore, in the early stage of bathing, the places where the human body needs the warm bathing action and the blood circulation action most are the shoulders, hips, buttocks and feet. Particularly, in the case of the conventional example, the feet and feet feel extremely cold. That is, when you take a shower while sitting in a chair,
Since the distance from the shower nozzle at the tip to the foot is long and there is a distance of about 600 mm or more on average, the conventional shower nozzle has a small spray particle diameter and lacks momentum. Was.

[0004] Because of this, the hot water shower absorbs the cool air in the greed room and hits the feet, feet and knees in a state where the temperature is lowered, so that the cold condition has continued and the warm bath effect has not been improved forever. Furthermore, the temperature of the floor surface in the washing scene in the bathroom is low, and in general, bare feet are often placed on the floor surface, the soles and feet are cooled, and the cold radiant heat from around the floor surface further promotes the above-mentioned action. Met. Such a situation could be very dangerous, especially for the elderly and healthy handicapped bathers, but also unpleasant for ordinary tendons. In this way, when the bathing interval is interrupted by the first bathing company or family situation,
There has been a problem that the cold and discomfort caused by the shower bathing temporarily and the bathing time are extended.

[0005]

In order to solve the above-mentioned problems, the present invention solves the above-mentioned problem by using about 30 nozzles provided at the tip of a nozzle arm.
Instead of a plurality of shower nozzles spraying in a conical shape with a relatively small particle size at ~ 50 degrees, a single straight injection nozzle that has a momentum in a thin linear shape just like a water gun and reaches far away or A plurality of hot water showers may be continuously provided by providing a plurality of holes, or a plurality of ejection holes formed on the ejection surface of the direct injection nozzle, and the hot water ejection may be ejected with a certain amplitude and vibration amplitude. It is what was constituted.

According to the above invention, the plurality of shower nozzles provided on the left and right nozzle arms arranged for the bather have relatively small spray particle diameters and have a spray angle of 30 to 50 degrees. By spraying the lower and upper body part of the lower part of the bather's neck, etc., instead of the shower nozzle provided at the tip of the nozzle arm, both feet and feet, which have been difficult to reach conventionally, or reach the shin or knee part. By providing one or a plurality of spray nozzles near the substantially distal end portions of the left and right nozzle arms, both feet and feet, or shins in the state of a strong hot water shower having a thin spray pattern with momentum like a water gun. And can be applied to the knee.

[0007] As a result, in addition to the hot water shower in the lower and upper body parts of the lower part of the neck, a sufficiently warm water shower can be applied to both feet and feet, shins and knees at the same time. Now you can enjoy a nice shower bath. In addition, there is no sense of "cold yat feeling" due to cold air mixing by the shower nozzle or cold radiation heat from the floor surface of the bathroom washing area, etc., and the bottom of the feet is cooled, so it is possible to realize a very uniform, comfortable and healthy hot water shower bathing. It became so.

[0008]

According to the first aspect of the present invention, a movable or retractable nozzle arm having a plurality of shower nozzles disposed therein, and a direct injection nozzle capable of jetting the fuel in a foot or knee area among the shower nozzles. This is a shower device provided with.

Then, a direct injection nozzle provided near a substantially distal end portion of the nozzle arm that moves or expands and contracts,
Hot water showers that previously could not reach the feet, feet, shins and knees are vigorous just like a water gun, and in some places hot water showers are intensively hit, and cold air in the bathroom at the beginning of bathing In addition, the cold radiant heat from the cold floor of the bathroom washing area was greatly reduced by the hot water injection from the direct injection nozzle without inhaling the air. Therefore, in addition to the conventional hot water shower of the lower part of the neck and upper body by a plurality of shower nozzles, uniform hot water is effectively applied to the entire lower body, including the feet, feet, shins and knees, and the entire body is uniformly heated. The shower can be sprayed, so that you can enjoy a really comfortable and healthy shower bath. In particular, it is beneficial for the elderly and those with a handicap of health.

The invention according to claim 2 can be a shower device comprising a plurality of direct injection nozzles. By providing a plurality of direct injection nozzles near the substantially distal end portion of the nozzle arm, the hot water shower does not concentrate locally on the toes, feet, shins and knees, but spreads over a certain area. You can enjoy a comfortable hot water shower because the hot water shower hits.

A third aspect of the present invention is a shower apparatus in which a nozzle arm having a direct injection nozzle is disposed on the left and right sides of a human body. By providing at least one or a plurality of direct injection nozzles on the left and right nozzle arms, a hot water shower can be applied to both feet, feet, shins and knees without offsetting, so it is comfortable and You can enjoy a pleasant warm water shower.

According to a fourth aspect of the present invention, there is provided a shower apparatus in which the inclination of a direct injection nozzle is deflectable. The bather grasps the tip of the direct injection nozzle by holding the tip of the direct injection nozzle at the tip of the left and right nozzle arms and provides a universal joint structure.
It can be adjusted easily to hit the feet, shins and knees, so you can enjoy a comfortable and comfortable hot shower. In addition, even if anyone is young or old, it can be easily operated and adjusted to all body shapes and positions, so it can be easily adjusted, so it is practically comfortable and easy to take a shower, and the feet are cold. Is almost none.

According to a fifth aspect of the present invention, there is provided a shower apparatus comprising a direct injection nozzle provided with a plurality of ejection holes. By disposing a plurality of ejection holes with a constant pitch on the ejection surface portion of the direct injection nozzle, a plurality of hot water showers having a certain expanse just like a water gun are jetted vigorously, and both feet Because it can be applied to the tip, feet, shins and knees, especially the entire width of the instep of the foot surface (where the arteries are raised), it is possible to promote blood circulation by the hot water shower, so it is more comfortable and comfortable hot water shower It can be enjoyed, and the massage action and effect can be expected.

According to a sixth aspect of the present invention, there is provided a shower apparatus comprising a plurality of small orifices having different diameters or alternately large and small. Then, a plurality of ejection holes having different diameters having a constant pitch on the ejection surface portion of the direct injection nozzle, for example, are arranged in parallel, alternately in size, or in a staggered manner, so that the ejection diameter of the hot water gun shower ejection diameter is increased. Since the jets are different in size, the warm water massage action is promoted along with the hot shower bathing on both the toes, feet, shins and knees, and the entire width of the instep of the feet. In addition, this inspires the bodily sensation of each bather, so that the bathing mood is improved, a more comfortable and comfortable warm water shower can be enjoyed, and the massage action and effect can be expected.

According to a seventh aspect of the present invention, there is provided a shower apparatus provided with a fluid element type direct injection nozzle for automatically changing the ejection angle by utilizing the oscillation vibration action of the fluid element. By introducing the fluid element principle into the basic structure of the direct injection nozzle, the pumped hot water has a certain width of spray angle due to the action of the fluid element and automatically oscillates with oscillation amplitude. It becomes a hot water gun shower. Therefore, the fuel is sprayed on both the toes, the feet, the shin, the knees, and the entire width of the instep portion of the foot surface.
Hot water shower hits or stops, it becomes a stimulating hot water shower, improving hot water massage action and bathing mood, feeling comfortable and promoting blood circulation, more comfortable, comfortable hot water shower and massage action effect That is what you can expect.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is an external side view illustrating a shower apparatus according to Embodiment 1 of the present invention.

Reference numeral 1 denotes a main body of the shower apparatus, and a chair 3 on which a bather 2 sits is provided at a lower portion thereof through a fulcrum 4 in a foldable and detachable manner. The back surface of the main body 1 is fixed to one wall surface 6 of the bathroom 5 with a mounting bracket (not shown). Reference numeral 7 denotes a nozzle arm mounted on the left and right side portions of the upper portion of the shower apparatus main body 1 via fulcrums 8, and a position control mechanism (not shown) in which the nozzle arm 7 stops at an appropriate height position. ) Is built-in.

Accordingly, the bather 2 can first sit on the chair 3 and then manually lift the nozzle arm 7 from the left and right side surfaces of the main body 1 and set the nozzle arm 7 at an appropriate position in front of the bather 2. In the longitudinal direction of the nozzle arm 7, a shower nozzle 9 that forms a substantially conical spray pattern having a spray angle of about 30 to 50 degrees is sprayed on both shoulders, chest, sides, and abdomen of the bather 2. A plurality of them are arranged at regular intervals so as to have a predetermined interval. At the tip end of the nozzle arm 7, a direct injection nozzle 10 of a hot water shower that is thin like a water gun and flies vigorously to a far distance is provided. Further, one or a plurality of shower nozzles 11 of the same type as the shower nozzle 9 sprayed on the waist portion of the bather 2 are provided on the lower surface of the main body 1 in a slightly recessed state.

On the other hand, hot water is supplied to the shower nozzles 9 and 11 or the direct injection nozzle 10 by using a stop-type water heater (not shown).
-City water pipe (not shown)-Hot water mixer tap (not shown), switching valve (not shown) and inside the main body 1-Connected via header (not shown) and various flexible pipes (not shown) Have been. The bather 2 of FIG. 1 sits on a chair 3 naked,
This shows a state in which both feet are extended or bent (dotted line portions).

Next, the operation and operation will be described. First,
Hot water temperature adjustment knob (not shown) for hot water mixer tap (not shown)
Is set to the shower temperature (for example, 40 ° C.), and the switching knob (not shown) of the switching valve built in the hot and cold water mixing tap is set to the hand shower (not shown) side or the spout side (not shown) for the washing place. When the switching is performed and the water shutoff flow control valve (not shown) provided in the hot water mixer tap is opened, the first stop water heater is operated, and the hot water is supplied together with the water supply from one of the city water pipes. An automatic temperature controller (thermo-type automatic temperature controller: not shown) of the hot and cold water mixing tap is operated to adjust the hot water temperature of the shower temperature to 40 ° C., and the left and right nozzles are connected via the piping and header of the main body 1. Each of the plurality of shower nozzles 9 and 11 and the direct injection nozzle 10 provided on the arm 7 forms a substantially full-cone spray pattern, and the direct injection nozzle 10 has a thin and moist like a water gun. Hot water shower for bathers Only to be injected.

Thus, the shower nozzles 9, 1
The hot shower from 1 is sprayed on the lower body part of the bather 2, while the water gun-shaped hot shower sprayed from the direct injection nozzle 10 is the feet, feet, and shins of the bather 2 that could not be reached conventionally.・ It is injected into the kneecap. As a result, the upper body part is uniformly heated by the hot shower from the shower nozzles 9 and 11, and the toe, foot, shin, and the like of the bather 2 are heated by the water gun-shaped hot shower from the direct injection nozzle 10. Since the part such as the kneecap can be warmed in a concentrated or dispersed manner, the "cold feeling" and the coldness due to the mixing of cold air in the greed room 5 and the cold radiant heat of the cooled floor 12 in the early stage of bathing are reduced. Very little, the whole body warms up efficiently and a really comfortable and healthy shower bath can be performed. In particular, by installing a direct injection nozzle, the instep portion of the foot surface (the portion where the artery portion is raised) is stimulated and heated with a water gun-shaped hot water shower, so blood circulation is promoted and massage action is performed, and efficient shower bathing and shower bathing are performed. It can shorten the time and bring a refreshing feeling, and can realize a completely new and comfortable bathing culture not found in ordinary bathtub bathing. Furthermore, it is possible to immediately take a bath 24 hours a day, and to expect water saving and energy saving effects by shortening the shower bathing time.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIG. In the figure, reference numeral 12 denotes a direct injection nozzle of substantially the same type as the direct injection nozzle 10 described in the first embodiment,
This is a configuration in which a plurality of nozzle arms 7 are provided at the tip portions of the left and right nozzle arms 7 and in the vicinity thereof. In particular, the direct injection nozzle 12 is configured such that the foot portion is wide, and the shin and knee portions are exposed to a water gun-shaped hot water shower.

Next, the operation and operation will be described. By providing a plurality of direct injection nozzles 10 and 12 in the vicinity of the substantially distal end of the nozzle arm 7, the hot water shower does not concentrate locally on the toes, feet, shins and knees, but in a certain area. The hot water shower spreads all over the area, so that a comfortable hot water shower is further improved.

Third Embodiment Similarly, a third embodiment of the present invention will be described with reference to FIG. In the drawing, the nozzle arm 7 having one or a plurality of direct injection nozzles 10 or 12 is disposed on the left and right sides of the bather 2.

Next, the operation and operation will be described. By providing at least one or a plurality of direct injection nozzles 10 and 12 on the left and right nozzle arms 7, a hot water shower can be applied to both feet, feet, shins and knees without offsetting. The hot water shower is not concentrated on the two right and left feet, but is sprayed uniformly, so that more effective and comfortable hot water shower bathing can be realized.

(Embodiment 4) FIG. 2 is a cross-sectional view of a direct injection nozzle illustrating a shower apparatus according to Embodiment 4 of the present invention.
In the figure, the direct injection nozzles 10 and 12 also have basically the same configuration as the shower nozzles 9 and 11, but the direct injection nozzles 10 and 12 have a higher adjustment frequency than the shower nozzles 9 and 11, The tip of the nozzle is slightly longer. The universal joint has a configuration in which the roots of the direct injection nozzles 10 and 12 are formed in a substantially spherical shape 13, the rear portion of the spherical shape 13 is joined to the nozzle seat 14, and the tip of the spherical shape 13 is a tightening nut. 15 and is mounted with a screw portion 16 of the nozzle seat 14 and a screw portion 16 of the tightening nut 15. When the bather 2 grasps the nozzle tip 17 of the direct injection nozzles 10 and 12 and turns it appropriately, the bather 2 rotates in the 360 ° direction on the axial center line of the direct injection nozzles 10 and 12, and also rotates 360 ° in the inclined direction.
It is configured so that it can be inclined at an angle of about ± 15 or more.

Next, the operation and operation will be described. If the bather 2 grips the tip 17 of the direct injection nozzles 10 and 12 and turns so as to face both feet, feet, shins, or knees to which a water gun-shaped hot water shower is to be applied, the injection direction can be easily determined. Can decide. Therefore, for both young and old, direct injection nozzle 10,
The hot shower by 12 can be easily adjusted and set to a place where one wants to warm up, and a comfortable and comfortable hot shower can be enjoyed. In addition, since the operation can be easily adjusted for any body shape and posture regardless of age and gender, there is almost no complaint that the feet and the like are cold with convenience.

(Embodiment 5) FIG. 3 is a cross-sectional view of a direct injection nozzle illustrating a shower apparatus of Embodiment 5. In the drawing, a plurality of ejection small holes 19 are arranged at a constant pitch on the tip ejection surface 18 of the main body of the direct injection nozzles 10 and 12. According to experiments, when the minimum tap water pressure is about 0.5 kg / fcm2, the diameter of the jet small holes 19 is in the range of about 0.3 to 0.7 mm2. Then it is most effective.
With this configuration, not a single water gun-shaped hot water shower but a plurality of hot water showers are formed. Therefore, the hot-water gun shower is sprayed on the surface of a certain width and a certain area without concentrating on a certain point.

Next, the operation and operation will be described. By arranging a plurality of ejection holes 19 at a constant pitch on the ejection surfaces 18 of the direct injection nozzles 10 and 12, a plurality of water gun-shaped hot water showers having a certain width are jetted vigorously. Because it can be applied to the entire width of the toes, feet, shins and knees, especially the instep of the foot surface, the warm bath effect and the blood circulation can be promoted by the hot water shower, so you can enjoy a more comfortable and comfortable warm water shower, The effect can be expected.

(Embodiment 6) FIGS. 4, 5 and 6 are cross-sectional views of a direct injection nozzle illustrating a shower apparatus according to Embodiment 6 of the present invention. In the drawing, a large number of small ejection holes 20 and small ejection holes 21 having a constant pitch and different diameters are provided on the tip injection surfaces 18 of the direct injection nozzles 10 and 12, and the arrangement state thereof is shown. Is, for example, an ejection hole 20;
Reference numeral 21 denotes a parallel shape 22, alternating large and small 23, a staggered shape, and a plurality of ejection holes having different diameters on the arc surface 12 having a semicircular shape 24 or an elliptical shape on the tip ejection surface 18. 20 and 21 are arranged in the same manner as described above.

Next, the operation and operation will be described. A plurality of ejection holes 20, 21 having a constant pitch and having different diameters on the ejection surfaces 18 of the direct injection nozzles 10, 12, for example, are arranged in a side-by-side state 22, alternately in a large and small size 23, or in a staggered shape. Because, the water gun-shaped hot water shower is jetted with a jet diameter different in size, so it spreads over the entire width of both feet, feet, shins and knees, and the instep of the foot surface, and promotes blood circulation,
The warm water massage action is further promoted. In addition, this inspires the bodily sensation of each bather, so that the bathing mood is improved, so that a more comfortable shower bathing and a comfortable warm water shower can be enjoyed, and a massage action and effect can be expected.

(Embodiment 7) FIG. 7 is a cross-sectional view of a fluid element type direct injection nozzle for explaining a shower apparatus according to Embodiment 7 of the present invention. In the drawing, reference numeral 25 denotes a fluid element type direct injection nozzle, an upstream portion 26 of which constitutes a jet jetting portion 27 connected to a pipe portion (not shown), and an air hole 28 connected to the outside air downstream thereof. Having a fluid element portion 29 having a single port 3 which is slightly inclined downstream thereof.
0 is configured.

Next, the operation and operation will be described. First, the hot water pressure-fed from the pipe section is throttled and rectified by the orifice section of the jet jetting section 27 and jetted vigorously into the fluid element section 29, while the air hole 28 connected to the outside air is provided.
The flow becomes self-oscillated while introducing a little more air, and is deflected along the single orifice 30 which is slightly divergently inclined and is ejected from the nozzle tip with a certain amplitude while swinging. . In addition, the spray pattern is such that the hot water mixed with air is not simply jetted out as a continuous water stream, but becomes a water gun-shaped hot water shower while the hot water and the air are intermittently interrupted, and both feet and feet of the bather 2 are displayed. It is sprayed on the shin, knees, and the entire width of the instep of the feet.

Therefore, the hot water shower hits or stops at the portion where the hot water shower hits, and the hot water shower is just a stimulus, which further promotes blood circulation and further promotes hot water massage. Furthermore, since the hot water shower hits the area where it spreads and becomes a hot water shower with a strong stimulus, it feels good and feels good, and further promotes blood circulation, comfort, comfort, which has never been before,
A bathing hot water shower with improved massage effect and the like can be enjoyed.

[0036]

As described above, according to the present invention, the particle size, which is conventionally provided at the tip of the nozzle arm, is relatively small,
And instead of a shower nozzle that sprays in a conical shape, by installing a direct injection nozzle that can reach a distant and vibrant line just like a water gun, both feet, feet, or shins that were difficult to reach with the shower nozzle And even to the knees,
A hot water shower like a water gun comes into contact, and the hot shower itself is not cooled down, and in addition to the hot shower with the shower nozzle in the upper body part, both feet of the lower body part
The feet, shins and knees are also warm, so you can enjoy a comfortable and healthy hot shower. In addition, by the above-described operation, the "cool-yat feeling" due to the mixing of cold air by the shower nozzle, the cold radiation heat from the floor surface of the bathroom washing room, and the like and the cooling of the feet at the bottom are greatly reduced, and a really comfortable shower bath can be realized.

Also, by providing a plurality of direct injection nozzles or disposing the direct injection nozzles equally on the left and right nozzle arms, a water gun-shaped hot water shower hits both feet, feet, shins and knees. As a result, you can enjoy a warm, comfortable and healthy hot shower bath.

Further, a plurality of small ejection holes or a group of small ejection holes are provided on the ejection surface of the direct injection nozzle alternately in parallel and large and small in a staggered manner, so that the ejection holes have a certain extent. Multiple water gun-shaped hot water showers are sprayed vigorously and can be applied to both toes, feet, shins and knees, especially the entire width of the instep of the foot surface, and blood circulation by hot water showers can be further promoted, You can enjoy a comfortable and comfortable hot shower, and you can expect to improve the action and effect of the massage.

Furthermore, by using a fluid element type direct injection nozzle that introduces the fluid element principle, a water gun-shaped hot water shower vibrates and oscillates while being sprayed with a certain spread area, and the hot water shower moves right and left and back and forth. As a result, the warm water shower can be enjoyed more comfortably and comfortably, and the massage action can be promoted and its effect can be further improved, so that a pleasant warm water shower can be realized.

[Brief description of the drawings]

FIG. 1 is a side view of a shower device according to Embodiments 1, 2, and 3 of the present invention.

FIG. 2 is a cross-sectional view of a direct injection nozzle of a shower device according to a fourth embodiment of the present invention.

3A is a cross-sectional view of a direct injection nozzle of a shower device according to a fifth embodiment of the present invention. FIG. 3B is an injection pattern diagram of the nozzle.

4A is a cross-sectional view of a direct injection nozzle of a shower device according to a sixth embodiment of the present invention. FIG. 4B is an injection pattern diagram of the nozzle.

5A is a cross-sectional view of another direct injection nozzle of the same apparatus. FIG.

FIG. 6A is a cross-sectional view of still another direct injection nozzle of the apparatus, and FIG. 6B is an injection pattern diagram of the nozzle.

FIG. 7 is a cross-sectional view of a fluid element type direct injection nozzle of a shower device according to a seventh embodiment of the present invention.

FIG. 8 is a side view of a conventional shower device.

[Explanation of symbols]

 7 Nozzle Arm 9 Shower Nozzle 10 Direct Injection Nozzle 19 Injection Small Hole 25 Fluid Element Direct Injection Nozzle

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Shigeru Shirai 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 2D032 FA02 4F033 AA11 DA05 EA05

Claims (7)

[Claims] 1. A shower apparatus comprising: a moving or expanding / contracting nozzle arm having a plurality of shower nozzles disposed therein; and a direct-injection nozzle for performing a concentrated injection at a foot or knee region among the shower nozzles. 2. The shower apparatus according to claim 1, comprising a plurality of direct injection nozzles. 3. A nozzle arm provided with a direct injection nozzle,
3. The shower device according to claim 1, wherein the shower device is disposed on the left and right with respect to a human body. 4. The shower apparatus according to claim 1, wherein the inclination of the nozzle for direct injection is deflectable. 5. The shower device according to claim 1, comprising a direct injection nozzle provided with a plurality of ejection holes. 6. The shower device according to claim 4, wherein a plurality of small orifices having different diameters are provided alternately. 7. The shower apparatus according to claim 1, further comprising a fluid element type direct injection nozzle for automatically changing an ejection angle by utilizing an oscillation action of the fluid element.