JPH0871454A - Sectoral jetting nozzle - Google Patents

Abstract

PURPOSE: To easily adjust the direction of a jetting angle by constituting a body and an inner member equipped with a jetting port of separate members, making further the inner member rotatable in a through-hole of the body along the inner peripheral surface and also installing a fall-off stopping ring to restrain the rotation around a shaft. CONSTITUTION: A body 1 and an inner member 2 equipped with a jetting port 23 are constituted of separate members. The inner member 2 is further made rotatable in a through-hole of the body 1 along the 2nd inner peripheral surface 12. Therefore, even after the body 1 is fixed, the inner member 2 can be rotated with respect to the body 1 to adjust the direction of a jetting angle of the jetting port 23 to a prescribed one. When a jetting liquid is fed to a sectoral jetting nozzle from a water feeding pipe 7, the liquid is passed through the hollow part of a fall-off stopping ring II arranged in the through-hole of the body and a water passage 25 of the inner member 2 and is jetted from the jetting port 23. Simultaneously liquid pressure is applied to an end face 2a of the inner member 2 to pressurize the taper surface and acts so as to check the movement of the inner member 2, and there is no deviation from the adjusted state of the jetting port 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan-shaped jet nozzle provided with jet outlets having different divergence angles (jet angles) for jetting water or the like depending on the directions around the jetting direction.

[0002]

2. Description of the Related Art Conventionally, the above fan-shaped injection nozzle has been used when the direction of injection of water or the like is required.
7 to 9 show a conventional fan-shaped injection nozzle in an attached state. 7 is a cross-sectional view seen from the front, FIG. 8 is a top view, and FIG. 9 is a cross-sectional view seen from the side. A description will be given with reference to the above figures. The fan-shaped injection nozzle 100 has a substantially cup shape. A jet port 102 for jetting a liquid such as water supplied from an opening 111 is formed on the bottom portion 101, and integrally with the jet port 102, a substantially cup-shaped side portion 103 has a convex portion that goes around the periphery. Certain contact part 104 and male screw part 1
05 is formed.

The jet outlet 102 has a known structure. A groove 110 having a V-shaped cross section is formed on the ejection side surface. The jet angle from the jet outlet 102 is the groove 1 shown in the corner A of FIG.
The direction along 10 is different from the direction perpendicular to the groove 110 shown by the angle B in FIG. 9, and a predetermined size of the angle A> the angle B is set. On the other hand, a flat seat surface 107 is formed on the water supply pipe 106, and the fan-shaped injection nozzle 1 is provided at the center thereof.
A female screw portion 108 that is inserted into the inside of the water supply pipe 106 is formed so as to serve as a water supply port for the water supply pipe 00.

The fan-shaped injection nozzle 100 has a packing 109.
It was fixed by sandwiching between the contact portion 104 and the seat surface 107 and screwing the male screw portion 105 into the female screw portion 108 of the water supply pipe 106.

[0005]

Since the direction of the groove 110 of the jet outlet 102 of the fan-shaped injection nozzle 100 is determined according to the rotation angle screwed for fixing, the direction of the groove 110 after fixing is as follows. I couldn't adjust it. Therefore,
In order to set the jet angle of the fan-shaped jet nozzle 100 in a predetermined direction, several types of packing 109 having different thicknesses are selectively attached and the screwing amount is adjusted. The details of this work are as follows. Once the packing 109 having an arbitrary thickness is sandwiched, the fan-shaped injection nozzle 100 is screwed and fixed. In this state, the direction of the groove 110 may be the same as the predetermined direction. If they do not match, the fan-shaped injection nozzle 100 was removed, replaced with a packing 109 having a different thickness, and reattached. This procedure is continued until the direction of the groove 110 coincides with the predetermined direction. Therefore, it was very troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above technical problems and to provide a fan-shaped jet nozzle which can easily adjust the direction of the jet angle.

[0007]

In order to achieve the above object, a fan-shaped injection nozzle according to a first aspect of the present invention is a fan-shaped injection nozzle having an ejection port having a different ejection angle depending on the direction around the ejection direction. With a body having a peripheral surface and a through hole having a narrow inner diameter on the tip side of the inner peripheral surface, and a narrow inner diameter on the tip side of the through hole, so as not to come out from the through hole to the tip side, An inner member that closes the through hole and is rotatably housed in the through hole and extends in the penetrating direction of the through hole, and the jet port is formed at the tip of the water passage. And a retaining ring that is fitted into the through hole from the rear of the inner member and that prevents the inner member from moving rearward in the through hole.

The fan-shaped jet nozzle according to claim 2 is
2. The fan-shaped injection nozzle according to claim 1, wherein an operation groove capable of operating the rotation of the inner member is formed on the front end side surface of the inner member from the front end side of the through hole. It is a feature. The fan-shaped injection nozzle according to claim 3 is the fan-shaped injection nozzle according to claim 1 or 2, wherein the through hole is tapered so that a diameter thereof gradually narrows toward a tip, and The diameter is such that it has a tapered shape that fits into the tapered through hole.

The fan-shaped jet nozzle according to claim 4 is
The fan-shaped injection nozzle according to claim 1 or 2, wherein a step having a narrow diameter is formed at a tip portion of the through hole. The fan-shaped injection nozzle according to claim 5 is the fan-shaped injection nozzle according to any one of claims 1 to 4, wherein a space between the inner member and the through hole is liquid-tightly closed, and It is characterized by further comprising a seal ring surrounding the diameter.

The fan-shaped jet nozzle according to claim 6 is
The fan-shaped injection nozzle according to any one of claims 1 to 5, wherein the body is formed with a thread for attachment on the outer periphery of the rear end side.

[0011]

The structure of the invention according to claim 1 has the following effects. That is, the body and the inner member having the ejection port are formed as separate members, and the inner member is rotatable along the inner peripheral surface within the through hole of the body. Therefore,
Even after fixing the body, the inner member can be rotated with respect to the body by applying a force for rotating the inner member. As a result, the direction of the injection angle of the ejection port formed at the tip of the inner member can be adjusted to a predetermined direction.

Further, the inner member does not move in the axial direction of the through hole (hereinafter referred to as the axis) by the retaining ring, and the restraining force acts in the axial direction. This restraining force acts as a frictional force when the inner member rotates about the axis. Therefore, the inner member can be rotated only when a force sufficient to overcome this frictional force is applied to the inner member in the rotation direction thereof.
At other times, the inner member does not rotate. That is,
The direction can be adjusted only when a force is applied to the inner member, and the adjusted state can be maintained when no force is applied. Therefore, the fixing means for the inner member may not be separately configured.

When the liquid is supplied from the rear side of the body, the liquid passes through the hollow portion of the retaining ring arranged in the through hole of the body and the water passage of the inner member, and is jetted from the jet port. According to the configuration of the invention according to claim 2 described above, in addition to the action described in claim 1, the following action is exhibited. That is, since the operation groove is formed on the tip-side surface of the inner member, the inner member can be easily rotated by a tool or the like that fits into the operation groove and can exert a rotational force. Further, since the operation groove is formed so as to be operable from the tip end side of the through hole, it is possible to adjust the direction of the ejection port from the side where the ejection port is located after fixing the body.
Therefore, it is easy to confirm the adjustment state of the ejection port, and the adjustment work is easy.

According to the configuration of the invention according to claim 3 above,
In addition to the actions of the first and second aspects, the following actions are exhibited. That is, the through hole and the inner member are taper fitted. Therefore, the axial restraining force of the retaining ring described in the operation of the invention according to claim 1 is
It acts from the inner member to the inner peripheral surface of the through hole. At this time, due to the wedge effect due to the taper, the axial restraining force is
It is converted into a larger force perpendicular to the tapered surface and acts on the inner peripheral surface. Therefore, the frictional force due to the force perpendicular to the inner peripheral surface is
It becomes larger than the frictional force when directly receiving the axial restraining force. If a force sufficient to overcome the increased frictional force does not act, the inner member does not rotate and the adjusted state can be maintained more stably.

On the other hand, when the magnitude of the frictional force is set to a predetermined value, the wedge effect due to the taper is utilized rather than the case where the axial restraining force of the retaining ring is directly received to make the frictional force. In that case, a smaller restraining force is applied to the inner member in the axial direction. According to the configuration of the invention according to claim 4 described above, in addition to the action described in claim 1 or 2, the following action is exhibited. That is, the inner member is constrained in the axial direction from the inside of the through hole to the tip side by the narrow step formed at the tip of the through hole, and does not move. Similarly, the inner member is constrained in the axial direction within the through hole by the retaining ring and does not move. As described in the action of the first aspect, the force restrained in the axial direction acts as a frictional force when the inner member rotates about the axis, and the adjusted state of the inner member can be maintained. Therefore, the fixing means for the inner member may not be separately configured.

According to the configuration of the invention of claim 5,
In addition to the action according to any one of claims 1 to 4, the following action is exhibited. In other words, the seal ring is located between the inner member and the through hole and elastically deforms to be in close contact with both the inner member and the through hole and can be liquid-tightly closed. Also, the restoring force of this elastic deformation acts as a pressing force on both the inner member and the through hole, and a frictional force against the rotation of the inner member is generated. Therefore, the inner member can be rotated only when the force that overcomes the frictional force is applied to the inner member in the rotation direction, and otherwise the inner member does not rotate. That is, the direction can be adjusted only when a force is applied to the inner member, and the adjusted state can be maintained when no force is applied.

According to the configuration of the invention described in claim 6,
In addition to the operation according to any one of claims 1 to 5, the following operation is achieved. That is, the body is formed by screwing a mounting screw thread (male screw) formed on the outer periphery of the rear end side into a mounting hole formed with a female screw to be screwed into the screw,
Can be easily fixed. Further, it is not necessary to provide a flange portion or the like for mounting, and the overall external dimensions can be reduced.

[0018]

Embodiments will be described in detail below with reference to the accompanying drawings showing embodiments. 1 to 3 show a configuration of a fan-shaped jet nozzle according to an embodiment of the present invention in an attached state. FIG.
Is a sectional view seen from the front, FIG. 2 is a top view, and FIG. 3 is a sectional view seen from the side. A description will be given with reference to each drawing.

The body 1 of the fan-shaped injection nozzle has a substantially cylindrical shape, and one end 1a thereof is an attachment end to a fixed portion such as an attachment portion of the water supply pipe 7. An inner member 2 having a substantially truncated cone shape and an annular retaining ring 4 are adjacently fitted into the through hole of the body 1. In the through hole of the body 1, from the one end 1a side, a first inner circumferential surface 11 having a circumferential surface and a second tapered inner circumferential surface 12 are coaxially formed adjacent to each other in the axial direction. Second
The inner peripheral surface 12 is formed such that the diameter on the one end 1a side is larger than the diameter on the distal end side and is equal to or at least smaller than the diameter on the first inner peripheral surface 11.

The inner member 2 has a substantially truncated cone shape and is fitted on the second inner peripheral surface 12 of the body 1. The conical surface 21 of the inner member 2 is formed with an inclination equal to the taper of the second inner peripheral surface 12, and a concave groove 22 is provided in the middle of the conical surface 21.
The O-ring 3 which is a seal member is attached to the groove 22 in a compressed state. The inner member 2 is formed with a water passage 24 that communicates with an end surface 2b that is a truncated cone-shaped top surface and the other end surface 2a. A jet port 23 is formed at the end of the water passage 25 on the tip side. Spout 23
Has the same shape as the jet outlet 102 shown in the conventional example, and its jet angle differs depending on the direction. That is, the horizontal injection angle (angle A in FIG. 1) in FIG. 2 is set to the maximum, and the vertical injection angle in FIG. 2 (angle B in FIG. 3) is set to the minimum. In addition, a sliding groove 24 is formed in the center of the end surface 2b as an operation groove for receiving a force for rotating the inner member 2, in parallel to the direction in which the injection angle is maximized.

The retaining ring 4 has an annular shape and is formed on the body 1.
Is fitted to the first inner peripheral surface 11. One end surface 4b of the retaining ring 4 is in contact with the end surface 2a of the inner member 2, and the other end surface 4a is flush with the one end 1a of the body 1. , Is inscribed in the first inner peripheral surface 11 and is press-fitted. In this state, the retaining ring 4
Prevents the inner member 2 from moving toward the one end 1a side and presses the inner member 2 against the second inner peripheral surface 12.

The inner diameter of the O-ring 3 is smaller than the inner diameter of the concave groove 22, and the wire diameter of the O-ring 3 is set larger than the depth of the concave groove 22. Therefore, in the assembled state, the O-ring 3 is compressed by being sandwiched between the second inner peripheral surface 12 and the bottom surface 22a of the concave groove 22, and is in close contact with these surfaces, and the second inner peripheral surface 12 and the inner member. Water is prevented from leaking between the two.

Further, on the outer peripheral surface of the body 1, from the one end 1a side, a male screw portion 13 formed of a male screw for fixing the fan-shaped jet nozzle to the fixed portion, and a screw portion which is a joint portion with the fixed portion. Mounting groove 1 that is a concave groove that is provided around the outer peripheral surface so that the O-ring 6 that is a sealing member that prevents water leakage of
4 and a hexagonal columnar head portion 15 which is a point of action of the male screw portion 13 when the male screw portion 13 is screwed into the tool.

On the outer peripheral portion of the water supply pipe 7, a flat seat surface 71 is formed as a mounting portion for the fan-shaped injection nozzle. Seat surface 7
1, so that the water supply pipe 7 and the fan-shaped injection nozzle communicate with each other,
A hole is formed in which a female screw 72 to be screwed with the male screw portion 13 of the body 1 is formed. The fan-shaped injection nozzle is the body 1
After fitting the O-ring 6 in the mounting groove 14 of, the male screw portion 13 of the body 1 is screwed and fixed to the female screw 72 formed in the water supply pipe 7 which is the fixed portion.

Next, with reference to FIG. 4, a method of adjusting the fan-shaped jet nozzle will be described. FIG. 4A is a perspective view of the adjustment tool 5 used for adjusting the fan-shaped injection nozzle,
FIG. 4B is an explanatory diagram of a usage state of the adjustment tool 5.
The adjustment tool 5 shown in FIG. 4A has a body portion 52 having a tip projection 51 formed on the tip end surface thereof. Body 52
A handle 53 is attached to the root of the so that it can be easily rotated. The tip projection 51 is adapted to engage with the skid groove 24, and its height is smaller than the depth of the skid groove 24, and is dimensioned so as not to damage the ejection port 23 during adjustment. Further, the body portion 52 of the adjusting tool 5 is
It is dimensioned to fit into the through hole of the body 1. Therefore, since the body portion 52 guides the rotation during the work,
Easy to work.

For the adjustment, the inner member 2 may be oriented in a desired direction with the adjusting tool 5. It should be noted that not only a dedicated tool such as the adjusting tool 5 but also a general-purpose tool such as a screwdriver can be used. As described above, according to this embodiment, the body 1 and the spout 23
The inner member 2 provided with is configured as a separate member, and the inner member 2 is rotatable within the through hole of the body 1 along the second inner peripheral surface 12. Therefore, even after fixing the body 1,
The inner member 2 can be rotated with respect to the body 1, and the direction of the injection angle of the ejection port 23 can be adjusted to a predetermined direction.

When an injection liquid such as water is supplied from the water supply pipe 7 to the fan-shaped injection nozzle, the liquid is supplied to the hollow portion of the retaining ring 4 arranged in the through hole of the body and the water passage of the inner member 2. After passing through 25, it is ejected from the ejection port 23. at the same time,
The hydraulic pressure acts on the end surface 2a of the inner member 2, presses the tapered surface, and acts to prevent the inner member 2 from moving. Therefore, the adjustment state of the ejection port 23 does not shift due to the hydraulic pressure.

Next, a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. 5A and 5B show a configuration of a fan-shaped injection nozzle according to a second embodiment of the present invention, FIG. 5A is a sectional view seen from the front, and FIG. 5B is a top view. The inner member 8 and the retaining ring 4 are adjacently fitted into the through hole of the substantially cylindrical body 1. It differs from the first embodiment in that a substantially cylindrical inner member 8 is used instead of the truncated cone-shaped inner member 2, and the fitting portion between the body 1 and the inner member 8 is different.

As in the first embodiment, the through hole of the body 1 is formed with the first inner peripheral surface 11 of the circumferential surface into which the retaining ring 4 is fitted, from the one end 1a. On the other hand, as the inner member 8 is used, the following parts are first
Is different from the embodiment described above. That is, instead of the tapered second inner peripheral surface 12 that fits into the inner member 2, the first inner peripheral surface 11 extends toward the tip end side in the axial direction and fits into the inner member 8.
A third inner peripheral surface 16 having an inner diameter smaller than that of the first inner peripheral surface 11 is formed in a step shape at the end portion on the tip side of the through hole. The end surface 17 serving as a connecting portion between the third inner peripheral surface 16 and the first inner peripheral surface 11 is in contact with the end surface 8b of the inner member 8 and prevents the inner member 8 from moving toward the tip side of the through hole. There is.

On the outer peripheral surface of the body 1, the male screw portion 1
3, the mounting groove 14 into which the O-ring 6 is fitted and the head portion 15 are formed as in the first embodiment. The inner member 8 is
It has a substantially columnar shape and is fitted to the tip end side portion of the first inner peripheral surface 11 of the body 1. A concave groove 82 is provided in the middle of the circumferential surface 81 of the inner member 8. The O-ring 3 which is a seal member is attached to the groove 82 in a compressed state. A protrusion 83 for receiving a force for rotating the inner member 8 is formed at the center of the end surface 8b. Further, a water passage 25 that is inserted through the end face 8b and the other end face 8a is formed. The jet port 23 is formed at the end of the water passage 25 on the tip side, that is, at the protrusion 83. Waterway 2
The shapes of 5 and the ejection port 23 are similar to those of the first embodiment. Two side surface portions 83a are formed in parallel with each other on the protruding portion 83, and two side surface portions 83a and the third inner peripheral surface 16 form two recessed portions 83b. A force for rotating the inner member 8 is applied to the side surface portion 83a. Also, this side surface portion 83
The a is formed at a right angle to the direction in which the ejection angle of the ejection port 23 is maximum.

In the retainer ring 4, one end face 4b of the retainer ring 4 is in contact with the end face 8a of the inner member 2 instead of the end face 2a of the inner member 2, as compared with the first embodiment. Others are the same, except the others. That is, the other end surface 4a
However, the outer peripheral surface 41 of the retaining ring 4 is press-fitted into the first inner peripheral surface 11 so as to be flush with the one end 1 a of the body 1. In this state, the retaining ring 4 prevents the inner member 8 from moving from the through hole to the one end 1a side and presses the inner member 8 against the end surface 17 of the body 1.

The inner diameter of the O-ring 3 is smaller than the inner diameter of the concave groove 82, the wire diameter of the O-ring 3 is larger than the depth of the concave groove 82, and the outer diameter of the O-ring 3 fitted in the concave groove 82 is. , And is set to be larger than the outer diameter of the outer peripheral surface 81 of the inner member 8. Therefore, in the assembled state, the O-ring 3 is compressed by being sandwiched between the first inner peripheral surface 11 and the bottom surface 82a of the groove 82, and is in close contact with these surfaces.

Next, with reference to FIG. 6, the adjustment of the fan-shaped jet nozzle will be described. FIG. 6A is a perspective view of the adjusting tool 9 used for adjusting the fan-shaped jet nozzle.
(B) is an explanatory view of a usage state of the adjustment tool 9. Figure 6
The adjustment tool 9 shown in FIG.
The tip concave portion 91 is formed. A handle 93 is attached to the base of the body portion 92 for easy turning. The tip recess 91 is adapted to engage with the protrusion 83, and the depth thereof is larger than the height of the protrusion 83, and is dimensioned so as not to damage the ejection port 23 during adjustment. Further, the body portion 92 of the adjustment tool 9 is sized to fit into the through hole of the body 1. Therefore, since the body portion 92 guides the rotation during the work, the work is easy.

For adjustment, the inner member 2 may be oriented in a desired direction with the adjusting tool 9. The nozzle of this embodiment can be applied to various devices, for example, an automatic hair washer. In this case, there are the following advantages. An automatic hair washing machine is used in a beauty salon, a barber shop, etc., and wash hair by spraying washing water on the head of a person to be washed in a water tank. The fan-shaped jet nozzle of the present invention can be applied to this washing water jetting section. As a result, adjustment of the injection direction at the time of assembly has been very troublesome in the past, but it becomes easy. In addition to this, the direction of the nozzle injection port can be changed by a user of an automatic hair washing machine such as a clerk at a barber shop.
There is also the effect that you can adjust it in your preferred direction.

The present invention is not limited to the above embodiment. For example, in the first embodiment of the present invention, the sliding groove 24 which is an operation groove for operating the rotation of the inner member 2 is used.
However, in the second embodiment, the projection 83 for operating the rotation of the inner member 8 is provided, but this is not the limitation. For example, the operation grooves on the end surfaces of the inner members 8 and 2 may be replaced with blind holes or protrusions provided at positions eccentric from the center of rotation.

Further, in the first embodiment of the present invention, the inner member 2
Is fitted to the through hole of the body 1 with a tapered surface, and in the second embodiment, the inner member 8 is fitted to the through hole of the body 1 with the circumferential surface, but this is not the only case. For example, the through hole of the body 1 may have a circular cross section, and the through hole may be provided with an inner member that is inscribed, or the inner member having a circular cross section may be provided with the through hole of the body 1 that is circumscribed. Also in these cases, the inner member is rotatable with respect to the through hole of the body 1. However, depending on the cross-sectional shape of the through hole and the inner member,
The through hole needs to be closed by the seal member.

Further, in the embodiment of the present invention, the concave grooves 22 and 82 into which the O-ring 3 is fitted are provided around the outer circumferences of the inner members 2 and 8, but the concave grooves are provided around the through hole of the body 1. May be. In this case, the O-ring 3 is compressed so that
The inner diameter of the fitted O-ring 3 is set smaller than the inner diameter of the through hole. Further, in the embodiment of the present invention, the O-ring 3 is used as the seal member, but other means such as packing may be used. In addition, the seal member may be omitted when the liquid pressure is small or when the liquid leakage is allowed.

In addition, various design changes can be made without changing the gist of the present invention.

[0039]

According to the invention of claim 1, the following effects can be obtained. That is, even after fixing the body, the direction of the injection angle of the ejection port formed at the tip of the inner member can be adjusted to a predetermined direction by applying a force for rotating the inner member. Further, a frictional force that restricts the rotation around the axis acts on the inner member. Therefore, the direction can be adjusted only when the force is applied to the inner member, and the adjusted state can be maintained when the force is not applied. In addition, the fixing means for the inner member is separately
It does not have to be configured.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, the following effect is exhibited. That is, the inner groove can be easily rotated by the operation groove. Further, after the body is fixed, the direction of the ejection port can be adjusted from the side where the ejection port is located, so that the adjustment state of the ejection port can be easily confirmed and the adjustment work can be easily performed. According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the following effect is exhibited. That is, due to the wedge effect of the taper, the frictional force becomes larger than the frictional force when the axial restraining force is directly received. Therefore, the adjusted state can be maintained more stably.

On the other hand, if the magnitude of the above-mentioned frictional force is set to a predetermined value, it is only necessary to apply a smaller restraining force to the inner member in the axial direction. According to the invention of claim 4, in addition to the effect of the invention of claim 1 or 2, the following effect is exhibited. That is, the inner member is rotatable in the through hole by the step having the small diameter and the retaining ring, but does not move in the axial direction. Further, a frictional force acts on the inner member with respect to the rotation, and the adjusted state can be maintained. Therefore, the fixing means for the inner member may not be separately configured.

According to the invention of claim 5, in addition to the effects of the invention of claims 1 to 4, the following effect is exhibited. That is, the seal ring can liquid-tightly close the space between the inner member and the through hole. Further, a frictional force against rotation is applied to the inner member. Therefore, the direction can be adjusted only when the force is applied to the inner member, and the adjusted state can be maintained when the force is not applied.

According to the invention of claim 6, in addition to the effects of the invention of claims 1 to 5, the following effect is exhibited. That is, it can be easily fixed with the male screw formed on the outer circumference of the body. Further, it is not necessary to provide a flange portion or the like for mounting, and the overall external dimensions can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional front view showing a configuration of a fan-shaped injection nozzle according to a first embodiment of the present invention in an attached state.

FIG. 2 is a top view of the fan-shaped jet nozzle shown in FIG.

3 is a sectional side view of the fan-shaped injection nozzle shown in FIG.

FIG. 4 is a perspective view (a) showing an adjusting tool for a fan-shaped injection nozzle according to the first embodiment of the present invention, and an explanatory view (b) showing a usage state of the adjusting tool.

FIG. 5 is a sectional front view (a) showing a configuration of a fan-shaped injection nozzle according to a second embodiment of the present invention and a top view (b) thereof.

FIG. 6 is a perspective view (a) showing an adjusting tool for a fan-shaped injection nozzle according to a second embodiment of the present invention, and an explanatory view (b) showing a usage state of the adjusting tool.

FIG. 7 is a sectional front view showing a configuration of a conventional fan-shaped jet nozzle in an attached state.

8 is a top view of the fan-shaped jet nozzle shown in FIG. 7. FIG.

9 is a sectional side view of the fan-shaped injection nozzle shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2, 8 Inner member 3 O ring (seal ring) 4 Retaining ring 13 Male screw part 11 1st inner peripheral surface 12 2nd inner peripheral surface (tapered) 16 3rd inner peripheral surface 17 End surface 16, 17 Step 23 Jet port 24 Sliding groove (operation groove) 25 Water passage

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masaru Noro 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Mitsuru Naganawa 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A fan-shaped jet nozzle having jet outlets having different jet angles depending on directions around the jet direction, wherein a through hole having a circular inner peripheral surface and having a narrow inner diameter on the tip side of the inner peripheral surface is formed. The body and the narrow inner diameter on the tip side of the through hole prevent it from coming out from the through hole to the tip side, close the through hole, and are rotatably housed in the through hole, A water passage extending in the penetrating direction of the through hole, an inner member in which the jet port is formed at the tip of the water passage, an inner member fitted into the through hole from the rear of the inner member, and the inner member moves backward in the through hole. A fan-shaped injection nozzle, comprising: a retaining ring that prevents the retaining nozzle from moving to the. 2. The fan-shaped injection nozzle according to claim 1, wherein an operation groove is formed on the surface of the inner member on the tip side so that the inner member can be rotated from the tip side of the through hole. The fan-shaped injection nozzle is characterized by being. 3. The fan-shaped injection nozzle according to claim 1, wherein the through hole is tapered so that a diameter thereof gradually narrows toward a tip, and an outer diameter of the inner member is the tapered shape. A fan-shaped injection nozzle having a tapered shape that fits into a through hole. 4. The fan-shaped injection nozzle according to claim 1 or 2, wherein a step having a narrow diameter is formed at the tip of the through hole. 5. The fan-shaped injection nozzle according to claim 1, further comprising a seal ring that liquid-tightly seals between the inner member and the through hole and surrounds an outer diameter of the inner member. A fan-shaped injection nozzle characterized by comprising. 6. The fan-shaped injection nozzle according to claim 1, wherein the body has a mounting thread formed on an outer periphery of a rear end side of the body.