JP6465836B2 - Nozzle device - Google Patents

Description

  The present invention relates to a nozzle device that ejects fluid, and more particularly to a nozzle device that is suitable for a configuration in which a fluid is formed into a swirling flow in a fluid passage.

  The target nozzle device constitutes a cooling device that injects a cleaning liquid or gas, injects a coating liquid or a chemical solution, or injects cooling water into a steel material as shown in FIG. 18 disclosed in Patent Document 2 as an application example. 19 is provided in the toilet seat body as shown in FIG. 19 disclosed in Patent Document 3 to form a water film by spraying water or the like, thereby preventing dirt from adhering to the inner surface of the toilet bowl or spraying it on a local body part. It is used in various fields, such as when cleaning.

  FIG. 17A shows a conventional nozzle device disclosed in Japanese Patent No. 2582836. This nozzle device includes a cylindrical nozzle body 10, an annular seal member 20, a nozzle tip 30, and an overflow imparting blade 40. In the nozzle body 10, connection means 11 and 12 for a spray fluid source are provided on one end side. An annular seal member 20 is disposed on the back side in the other end side cylinder, and the nozzle tip 30 is detachably connected to the front end thereof with the overflow imparting blades 40 incorporated therein. Then, the fluid flows from the one end side passage portion 14 through the inner hole of the annular seal member 20 between the inner periphery of the enlarged chamber 34 at the nozzle tip 30 and the outer periphery of the overflow imparting blade 40. It turns into a swirl flow through the passage, and is injected in a conical shape from the orifice 36 through the intermediate flow passage 35 and further from the divergent outlet end 38. The nozzle device described above is a quick disassembly type that can cope with clogging. However, since the nozzle body 10, the annular seal member 20, the nozzle tip 30, and the overflow imparting blade 40 are essential, the number of members is small. Many are complicated and difficult to reduce costs. As an example of the countermeasure, each nozzle device of FIGS. 17B, 18B, and 19B is simplified because the main member is composed of two or three members.

  Among these, FIG. 17B is disclosed in Patent Document 1. This nozzle device includes a cylindrical nozzle body 1 provided with a discharge port (hole) 2 on one end side, and a tip (core, swivel member) 7 incorporated in the cylinder of the nozzle body 1. 1 has a substantially spiral fluid passage (communication portion) 9a, 9b that is formed between the cylindrical inner peripheral surface of 1 and the outer peripheral surface of the tip 7 and extends from the other end of the nozzle body 1 toward the discharge port 2. Then, the fluid introduced into the nozzle body 1 is jetted from the discharge port 2 as a swirling flow through the fluid passages 9a and 9b. Reference numerals 8a and 8b denote blade-shaped guide members. In this structure, by providing two grooves 6a and 6b intersecting at the discharge port 2 on the end surface on the discharge port 2 side of the nozzle body, the shape in which the fluid is ejected from the discharge port can be formed as a rectangular spray pattern. To do.

  The nozzle device 1c shown in FIG. 18 is disclosed in Patent Document 2. This nozzle device includes a cylindrical nozzle body (spray nozzle) 60 having an orifice-equipped throat 66 on one end side, a connection body 61 having an inlet 64 connected to the nozzle body 60, and a connection body 61. A tip (vane) 62 is provided that imparts a swirling flow to the cooling water that is disposed and transferred from the inlet 64. In this structure, the cooling water that has entered the inlet 64 is swirled by the tip 62, passes through the whirling chamber 65, and converges at the throat 66 while forming an overall elliptical injection pattern through the elliptical orifice.

  The nozzle device 9 of FIG. 19 is disclosed in Patent Document 3. The nozzle device 9 includes a water supply body 35 that forms the water injection section 34 and a circular water diffusion body 36 that diffuses the water injected from the water injection section 34 in a radial pattern. The water diffuser 36 has a concave curved upper wall facing the water injection unit 34, and a plurality of support ribs 39 are provided on a column 38 that enters the internal water passage 37 of the water supply 35. ing. In this structure, water spray spreads radially toward the outer peripheral portion of the inner surface of the toilet 1 and is poured directly under the rim portion, and flows down while wetting the entire surface along the inner surface inclination.

Japanese Patent No. 4504641 (FIGS. 1 to 4) Japanese Patent No. 3066791 (FIGS. 12 to 14) JP 2013-79578 A (FIGS. 4 to 6)

Although the above-described simplified nozzle device can be easily reduced in cost as compared with the structure of FIG. 17A, it is still not satisfactory from the following viewpoint.
(1) In the structure shown in FIG. 17B, for example, a connecting member such as the connection body 61 shown in FIG. In addition, there is a problem that it is difficult to maintain a stable swirl because the configuration in which the fluid is actively branched and introduced from the inlet side passage 3d of the nozzle body into each fluid passage (communication portion) 9a, 9b is lacking. is there.
(2) Similarly, in the structure of FIG. 18B, since the main member has a three-member configuration of the nozzle body 60, the connection body 61, and the tip 62, the number of constituent members is large and complicated. There is also a problem that it is difficult to maintain a stable swirl because the configuration in which the fluid is actively branched and introduced from the inlet 64 of the connection body 61 into each fluid passage of the tip 62 is lacking.
(3) In the structure of FIG. 19 (b), water hits the concave curved surface of the water diffuser 36 from the water injection part 34 and spreads radially toward the peripheral part of the toilet bowl inner surface as shown by the broken line (a). Then, it flows down while wetting the entire surface along the inner slope. In short, the state where water is not directly under the water diffuser due to the presence of the water diffuser 36, that is, the spray pattern does not have a full cone shape but tends to have a holocon shape.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a nozzle device that can solve the above-described problems to some extent, and that can maintain a simplicity and reliably form a uniform injection pattern by turning a fluid into a swirling flow. It is in. Other purposes will be clarified in the following description.

In order to achieve the above object, the present invention, when specified with reference to the first and second embodiments, has a cylindrical nozzle body (1 or 3) provided with a discharge port (12 or 33) on one end side, and the nozzle A chip (2 or 4) incorporated in the main body, and is formed between the cylindrical inner peripheral surface of the nozzle body and the outer peripheral surface of the chip, and extends toward the discharge port of the nozzle body 1. A nozzle device (6 or 7) having a substantially spiral or arcuate fluid passage, wherein the fluid introduced into the nozzle body is swirled by the fluid passage and ejected from the discharge port. A flow rate adjusting means (19) provided in the main body (1 or 3) and having a diameter smaller than the inner diameter of the nozzle main body and adjusting the fluid flowing into the fluid passage to a predetermined flow rate, and a plurality of the fluid passages. And flows from the flow rate adjusting means. It is characterized in having a fluid branching means (28 Further 48) for the fluid to be branched inlet respectively to the each fluid passageway.

The present invention as described above is more preferably embodied as specified in claims 2-8.
(A) In claim 1, the flow rate adjusting means (19) is provided around the nozzle body (1) (claim 2). This configuration is specific based on the first embodiment and the first to third modifications.
(A) In claim 1, the flow rate adjusting means (19) is provided in the nozzle body (1), and the fluid branching means (28) is provided in the tip (2). (Claim 3). This configuration further defines claim 2 and is specified based on the first embodiment and the first to third modifications.

(C), according to claim 3, before Symbol fluid branching means (48) is a structure which is formed integrally with the chip (4) (Claim 4). This configuration more specifically specifies claim 3 .
(D) In claim 1, the fluid branching means (58) is provided in the tip (5B), and the flow rate adjusting means is an adjustment member dedicated to the nozzle body corresponding to the fluid branching means. It is the structure assembled | attached as (5A) (Claim 5) . This configuration is specific based on the modification of FIG.
(E) In any one of claims 1 to 5, the nozzle body and the tip include an engaging portion (24 or 43a) provided on an outer periphery of the tip and an engaged portion (15b) provided on the nozzle body. Or, it is a structure connected by engagement with 36) (Claim 6) . This configuration is specific based on the first form and the second form.

( F) In Claims 1 to 3, the nozzle body (1) has positioning means (16, 23) for positioning the tip (2) with respect to the nozzle body (Claim 7). . This configuration is specific based on the first embodiment and the first to third modifications.
(G), Oite to claims 1 7, wherein the fluid passage (FP) is the outer peripheral longitudinally extending and grooves (29a, 29 b) and cylindrical inner peripheral surface of the nozzle body of the chip (2) (Claim 8) . This configuration is specific based on the first embodiment and the first to third modifications.

(H), Oite to claims 1 7, wherein the fluid passage (FP) is a configuration that is defined between the groove and the tip extending cylindrical inner circumferential longitudinal direction of the nozzle body (Claim 9) . Although this configuration is omitted, as a fluid passage configuration other than the above, the fluid passage is defined between the groove provided in the cylindrical inner peripheral longitudinal direction of the nozzle body and the outer peripheral surface of the tip. It is. That is, this configuration is specific for clarifying that the fluid passage of the present invention only needs to be provided between the cylindrical inner peripheral surface of the nozzle body and the outer peripheral surface of the tip.
(Ke), Oite to claims 1 7, wherein the fluid passage (FP) is below the tip (4) plate portion configured to be inserted into said nozzle body (44) and said plate portion This is a configuration that is partitioned between the wings (47a, 47b) protruding from both side surfaces and the cylindrical inner peripheral surface of the nozzle body (claim 10). This configuration is specific based on the second embodiment and the modification of FIG.

  In the invention of claim 1, since the main member is the nozzle main body and the tip, simplification can be maintained, and the fluid passage is formed between the cylindrical inner peripheral surface of the nozzle main body and the outer peripheral surface of the tip, and is formed in the nozzle main body. Since the fluid to be introduced is swirled and ejected from the discharge port, a full cone shape as a spray pattern, or a circular shape as a spray distribution pattern, or a similar pattern can be easily formed. In addition, in the present invention, as exemplified in FIG. 3 and FIG. 12, the flow rate adjusting means is provided in the nozzle body and is smaller than the inner diameter of the nozzle body, and further flows from the flow rate adjusting means. Fluid branching means for branching and flowing the fluid into the plurality of fluid passages is provided. For this reason, in this nozzle structure, a fluid having a predetermined flow rate can be branched and flowed almost evenly into each fluid passage by the fluid branching means without increasing the number of members, thereby making it possible to accurately form a target injection pattern.

  The invention of claim 2 can maintain simplicity because the flow rate adjusting means is provided around the nozzle body as illustrated in FIG. Further, as exemplified in FIG. 3, the invention of claim 3 can easily form the flow rate adjusting means integrally with the nozzle body or can easily form the fluid branching means integrally with the chip. Excellent formability.

In the invention of claim 4, since the integrally formed flow body branching means to the chip, liable to maintain the positional accuracy of the flow body branching means, thereby enabling formation more accurately spray pattern of interest.

In the invention of claim 5, as illustrated in FIG. 16, the fluid branching means is provided in the chip, and the flow rate adjusting means is incorporated in the nozzle body as a dedicated adjusting member. For this reason, although the number of members increases compared with the structure of FIG. 12, it becomes easy to ease the shape restrictions of the fluid branching means and the flow rate adjusting means.

The invention of claim 6, Oite to claims 1 to 3, the nozzle body and tip are connected by the engagement of the engaged portion provided in the engaging portion and the nozzle body which is provided on the outer periphery of the chip Therefore, assembly becomes easy.

The invention of claim 7, Oite claims 1 to 3, chips since it has a positioning means for positioning the nozzle body, the chip as in the first embodiment in a cylinder of the nozzle body by a one-touch operation Assembling can be improved with high accuracy.

The invention of claim 8, Oite to claims 1 7, cylindrical inner peripheral surface of the groove and the nozzle body is fluid passageway as illustrated in FIG. 3 extends to the outer peripheral longitudinal direction of the chip as in the first embodiment Therefore, it is easy to develop the configuration as shown in FIGS. 7B, 8 and 9 as necessary. In contrast, the invention of claim 9, Oite to claims 1 7, because it is defined between the groove and the tip fluid passageway extends into the cylindrical inner circumferential longitudinal direction of the nozzle body, fluid The passage configuration is not limited by the configuration of claim 8, and the degree of freedom in design can be expanded.

The invention of claim 10, Oite to claims 1 7, protrudes under both sides of the plate portion fluid passage is inserted into the nozzle body constitutes a chip as in the second embodiment and the plate portion Since it is partitioned between the wing portion and the cylindrical inner peripheral surface of the nozzle body, the configuration as shown in FIG. 16 can be easily developed as necessary.

It is an external appearance perspective view which shows the nozzle apparatus which concerns on a 1st form. 1A and 1B show details of the nozzle device of FIG. 1, wherein FIG. 1A is a top view, FIG. 1B is a rear view, FIG. 1C is a side view, FIG. 1D is a front view, and FIG. 2A is a cross-sectional view taken along the line AA in FIG. 2D, FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2D in which only the nozzle main body is cross-sectioned, and FIG. It is an action | operation figure which expands and shows. The detail of the nozzle main body which comprises the said nozzle apparatus is shown, (a) is a side view, (b) is a front view, (c) is BB sectional drawing of (a), (d) is (b) ) Is a cross-sectional view taken along line C-C in FIG. The details of the chip constituting the nozzle device are shown, (a) is a top view, (b) is a rear view, (c) is a left side view, (d) is a right side view, and (e) is (a) ) Is a cross-sectional view taken along line E-E, (f) is a cross-sectional view taken along line FF of (c), (g) is a cross-sectional view taken along line GG, and (h) is a cross-sectional view taken along line H-H. The usage example using the said nozzle apparatus is shown, (a) is a schematic diagram which shows the injection state of a nozzle apparatus, (b) is the schematic diagram which cut the injection pattern in the KK line | wire. (A) is a perspective view of the said chip | tip, (b) is a figure which shows the modification 1 of the said chip | tip corresponding to the said perspective view. It is a figure which shows the modification 2 of the said chip | tip and a nozzle main body corresponding to FIG. The other modification 3 of the said chip | tip is shown, (a) is the perspective view, (b) is a perspective view in the state rotated about 90 degree | times from the state of (a). It is an external appearance perspective view which shows the nozzle apparatus which concerns on a 2nd form corresponding to FIG. 10 shows details of the nozzle device of FIG. 10, (a) is a top view, (b) is a rear view, (c) is a side view, (d) is a front view, and (e) is a bottom view. 11A is a cross-sectional view taken along the line A1-A1 of FIG. 11E, FIG. 11B is a cross-sectional view taken along the line A1-A1 of FIG. FIG. 10 shows details of the nozzle body constituting the nozzle device of FIG. 10, wherein (a) is a top view, (b) is a side view, (c) is a bottom view, and (d) is a line B1-B1 in (c). It is sectional drawing. FIG. 10 shows details of a chip constituting the nozzle device of FIG. 10, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a left side view, and (e) is ( It is C1-C1 sectional view taken on the line of c). An example of use using the nozzle device of FIG. 10 is shown, (a) is a schematic diagram showing an ejection state of the nozzle device, and (b) is a schematic diagram showing a cross section of the ejection pattern along the line K1-K1. The modification of a 2nd form is shown, (a) is the block diagram which carried out the half cross section of the nozzle main body, (b) is the schematic perspective view. (A) is sectional drawing of the conventional nozzle device disclosed by patent 2582836 gazette, (b) is sectional drawing of the nozzle device disclosed by patent document 1. FIG. (A) is a block diagram which shows the usage example of the nozzle apparatus disclosed by patent document 2, (b) is sectional drawing of the nozzle apparatus. (A) is a block diagram which shows the usage example of the nozzle apparatus disclosed by patent document 3, (b) is sectional drawing of the nozzle apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In this description, the first embodiment shown in FIGS. 1 to 6 and the operation thereof, the first modification shown in FIG. 7B, the second modification shown in FIG. 8, the third modification shown in FIG. 9, and the first modification shown in FIGS. The second embodiment and its modification example in FIG.

(First Form) This nozzle device 3 includes a cylindrical nozzle body 1 having a discharge port 12 on one end 10a side, and a tip 2 incorporated in the cylindrical shape of the nozzle body 1. It has a substantially spiral or arcuate fluid passage FP that is formed between the cylindrical inner peripheral surface 11 and the outer peripheral surface of the chip 2 and extends from the other end 10b side of the nozzle body 1 toward the discharge port 12. A fluid such as water introduced into the cylinder of the main body 1 is swirled by the fluid passage FP and can be ejected from the discharge port 12. The nozzle body 1 and the chip 2 are both injection-molded products using synthetic resin, but may be other than resin.

  A contrivance point is a connection portion 17 that is connected to the periphery of the other end 10 b side of the nozzle body 1 so that a target fluid can be introduced into the cylinder of the nozzle body 1, and is arranged around the nozzle body 1 corresponding to the connection portion 17. A small-diameter hole portion 19 that is a flow rate adjusting means that is formed to be smaller than the inner diameter of the cylinder of the nozzle body 1 and a groove 29a that is provided around the tip 2 and defines the tip side of the fluid passage FR. , 29b, and a fluid branching portion 28, which is a fluid branching means that is provided in the chip 2 so as to branch and flow the fluid flowing from the small-diameter hole portion 19 into each fluid passage FP. These details will be clarified below. In addition, although the small diameter hole part 19 is perforated around the other end 10b of the nozzle body 1 in the embodiment, it may not be around the other end side. That is, in terms of configuration, for example, when the nozzle body 1 is long, it may be perforated around an appropriate position away from the other end side.

  Here, the nozzle body 1 is substantially L-shaped, and integrally forms a cylindrical tube portion 10 and a connecting portion 17 connected to the tube portion 10 at a substantially right angle. The connecting portion 17 forms a passage 18 that enables the target fluid to be supplied into the cylindrical portion 10. The connection portion 17 is provided with a plurality of circular claws 17a that are difficult to come off when inserted into the supply pipe 9. In addition, as the supply pipe | tube 9, a pipe, a hose, piping, and those similar to them are used.

  The outer periphery of the cylindrical portion 10 has a plurality of engaging projections 14 which are restricting protrusions 13 and one of the attaching means on one end 10a side, and the other end 10b side receives the head 20 of the chip 2. And a recess 16 for positioning the chip 2. The inner peripheral surface 11 of the cylindrical portion 10 has a discharge port 12 along which the one end 10a side extends along the central axis, and a reduced flow portion 11a whose diameter is gradually reduced toward the discharge port 12, and the other end 10b side is the head of the chip 2. 20 and a large diameter portion 11b for receiving the neck portion 26 and a shallow step 11c centered on the small diameter hole portion 19.

  That is, the restricting protrusion 13 protrudes around the one end 10a. Each engagement piece 14 protrudes substantially in the shape of the periphery of the one end 10a side, and a portion between the top portion 14a and the bottom end that protrudes to the maximum is a pressure contact portion, and can be elastically reduced in diameter due to the presence of the inner gap 14b. ing. Then, the restricting protrusion 13 and the engaging piece 14 are in a state in which one end side including the restricting protrusion 13 side is inserted into the attachment hole 8b provided in the attachment plate portion 8a as inferred from FIGS. 1 and 6A. The upper and lower surfaces of the mounting plate portion 8a are held between the restricting protrusion 13 and the engaging piece 14 so that the mounting plate portion 8a can hold the mounting plate portion 8a. Note that the mounting plate portion 8a is a part of the nozzle case 8 that houses a main portion of the nozzle device 1 as shown in FIG.

  As shown in FIGS. 3 and 4, each piece 15 has an inner diameter 15 a that fits the head 20 of the chip, and can be swung by a vertical slit 15 b provided therebetween. . An engagement hole 15 c is formed through the center of each piece 15. Each engagement hole 15 c engages with a corresponding protrusion 24 provided around the head 20.

  The discharge port 12 is an orifice through which a fluid flows out, and includes a round hole 12a having a minimum diameter on the back side and an inclined enlarged hole 12b that is a divergent outer side. The spray angle θ is arbitrary, but is usually set to about 50 to 120 degrees. The contracted portion 11a guides the fluid to the discharge port 12 so as to be compressed or contracted in a state where the fluid is formed in a swirl flow by the fluid passage FP as shown in FIG. Reference numeral 10c denotes a tip protruding portion that protrudes from the end face of the one end 10a so that the inclined enlarged hole 12 borders the tip end side of b.

  The passage 18 of the connecting portion 17 is connected to the small-diameter hole portion 19 via a contracted portion 18 a that gradually decreases in diameter toward the small-diameter hole portion 19. The small-diameter hole portion 19 is provided smaller than the inner diameters of the passage 18 and the cylindrical portion 10. The step 11c may be omitted, but is a portion facing a fluid branching portion 28 of the chip 2 described later, so that fluid can be smoothly introduced into the cylindrical portion 10 from the small-diameter hole portion 19 This is useful for preventing clogging.

  On the other hand, the chip 2 includes a head portion 20 and a shaft portion 25 protruding from the end face of the head portion 20 as shown in FIG. , A hole portion 22 having a smaller diameter than the hole portion 21 and a hole portion 22a having a smaller diameter than the hole portion 22 are provided. The chip 2 is lightened by the holes 21, 22, and 22a. Around the head 20, a projection 24 that can be engaged with the engagement hole 15 c and a positioning projection 23 that can be fitted into the recess 16 are provided.

  The shaft portion 25 is provided in a neck portion 26 provided on the lower side of the head portion 20, a flange portion 27 provided on the lower side of the neck portion 26, and a shaft portion on the lower side of the flange portion 27, and the fluid passage FP. The partitioning grooves 29a and 29b and the fluid branching portion 28 and the substantially V-shaped tip surfaces 25a and 25a are integrally provided.

  A seal ring R is attached to the neck portion 26. As shown in FIG. 3, the seal ring R is positioned between the head portion 20 and the collar portion 27, and is pressed against the corresponding inner periphery of the large diameter portion 11b of the nozzle body to thereby increase the diameter of the seal ring R. The portion 11b can be sealed. In other words, the seal ring R has a liquid between the shaft portion 25 and the large-diameter portion 11b even if the fluid flows into the cylindrical portion 10 through the passage 18, the contracted portion 18a, and the small-diameter hole portion 19 with a predetermined pressure. Prevent leaks.

  The fluid branch portion 28 is provided at a location where the grooves 29a and 29b intersect with each other, and includes an upper and lower protrusions 28a and 28b and an intermediate portion 28c between the protrusions 28a and 28b. The upper and lower protrusions 28a and 28b abut against the step 11c or the inner peripheral surface 11 as shown in FIG. 3B, and guide the flowing fluid into the left and right grooves 29a and 29b. The projections 28a and 28b may be only one or both. The intermediate portion 28c is preferably formed lower than the protrusions 28a and 28b and is opposed to the substantially center with a gap with respect to the small-diameter hole portion 19, and may be a flat shape or a gentle mountain shape.

  The groove 29 a and the groove 29 b are provided around the lower shaft portion of the shaft portion 25 from the flange portion 27, and are formed in a substantially spiral shape or an arc shape from the fluid branch portion 28 to the corresponding front end surface 25 a. That is, the groove 29a is generally spiral or arcuate as a whole with the upper side connected to the fluid branch portion 28 and the lower side connected to the one end face 25a. The groove 29b is generally spiral or arcuate as a whole with the upper end connected to the fluid branching portion 28 and the lower end connected to the other tip surface 25a.

(Operation of the first embodiment) The main operation characteristics of the nozzle device 6 will be described below.
(1) In the assembly operation, the seal ring R is mounted on the tip 2 and then inserted into the nozzle body 1 from the shaft portion 25 of the tip. During the insertion, the tip 2 is positioned with respect to the nozzle body 1 so that the convex portion 23 is fitted into the concave portion 16. From this state, the chip 2 is fixed when pushed further. That is, the chip 2 includes the fitting of the head 20 to the inner diameter 15a of each piece, the engagement of the protrusions 24 to the plurality of engagement holes 15c, the fitting of the projection 23 to the recess 16, and the large diameter portion 11b. Is positioned and fixed with respect to the nozzle body 1 with high accuracy. In this assembled state, the small-diameter hole portion 19 is disposed opposite to the upper and lower protrusions 28a and 28b and the intermediate portion 28c constituting the fluid branching portion 28 of the chip as shown in FIG.

(2) FIG. 6 shows a usage example of the nozzle device 6 described above. For example, the nozzle device 6 is accommodated in the nozzle case 8 and is held by the holding structure of the above-described restricting protrusion 13 and the engaging piece 14 with respect to the mounting plate portion 8 a constituting the nozzle case 8. As an example, when the nozzle device 6 is used for a toilet similar to that shown in FIG. 19A, the nozzle case 8 is disposed at a corresponding portion of the toilet seat or the toilet seat body. A corresponding end of the supply pipe 9 is connected to the connection portion 17, and a fluid such as water is supplied from the supply pipe 9 to the passage 18 at a predetermined pressure. Of course, the nozzle device 6 may be used for other purposes, and can be used in various fields as described in paragraph 0002.

(3) In the nozzle device 6 described above, cleaning water is supplied to the passage 18 of the connecting portion via the supply pipe 9. Then, a fluid such as water is transferred into the cylindrical portion 10 through the small-diameter hole portion 19 that is a flow rate adjusting means while being compressed to the design value by the upstream-side contracted portion 18a in the passage 18. . Thereafter, the fluid that has entered the cylindrical portion 10 flows into the groove 29a and the inner peripheral surface of the cylindrical portion due to the presence of the fluid branching portion 28 facing the small-diameter hole portion 19, that is, the upper and lower protrusions 28a and 28b and the intermediate portion 28c. 11 between the fluid passage FP (hereinafter abbreviated as a fluid passage FR including the groove 29a) and the groove 29b and the inner peripheral surface 11 of the cylindrical portion as shown in FIG. 3 (c). Into a fluid passage FP (hereinafter, abbreviated as a fluid passage FR including the groove 29b).

(4) In other words, the fluid such as water entering the cylindrical portion 10 from the small-diameter hole portion 19 serving as the flow rate adjusting means includes the groove 29a by the fluid branching portion 28 facing the small-diameter hole portion 19. The fluid passage FP and the fluid passage FP including the groove 29b are almost equally divided into two. In FIG. 3C, the fluid passage FP including the groove 29b is located on the upper side of the paper surface, and the fluid passage FP including the groove 29a is located on the lower side of the paper surface although not shown. In the drawing, the flow from the small-diameter hole portion 19 into the cylindrical portion 10 is indicated by a solid line as the flow of fluid such as water. As a flow after branching by the fluid branch portion 28, the flow of the fluid passage FP including the groove 29b is also indicated by a solid line, and the flow of the fluid passage FR (not shown) including the groove 29a on the lower side of the drawing is indicated by a broken line.

  In other words, in this example, a fluid such as water entering the cylinder portion 10 is equally divided into a fluid passage FP including the groove 29a and a fluid passage FP including the groove 29b, so that each fluid passage FP is formed. The swirl flow that is formed from the fluid passage FP to the discharge port 12 (its small diameter hole 12a) can be brought closer to the designed pattern. As a result, the nozzle device 6 can maintain a good injection pattern as shown in FIG. 6, and can maintain the injection angle θ and the injection distance at the designed values. This operation means that it is possible to eliminate or alleviate problems such as disturbance of uniformity, which is likely to occur in the conventional nozzle device, streaks, or partial deviation as an injection pattern.

(Modification 1) FIG. 7A is a perspective view of the chip 2 described above. FIG. 7B shows a modification of the chip 2 in the same manner as in FIG. In the description of the first modification, the same or similar parts as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted as much as possible.

  The modified example 1 in FIG. 6B is an example in which the lengths of the grooves 29a and 29b provided in the shaft portion 25 are extended as compared with FIG. That is, the groove 29a has an upper end connected to the fluid branching portion 28, and a lower end extending to the lower portion of the lower protrusion 28b by changing the shape of the corresponding lower end surface 25a. Reference numeral 25b denotes a lower edge portion which is formed as an extension and borders the lower side of the groove 29a. Similarly, the upper end of the groove 29b is connected to the fluid branch portion 28, and the lower end thereof is further extended downward by changing the shape of the corresponding lower end surface 25a. Reference numeral 25c denotes a lower edge portion which is formed as an extension and borders the lower side of the groove 29b. In the first modification, in particular, by changing the lengths of the grooves 29a and 29b, the injection distribution pattern in FIG. 6 can be changed from a circular shape to, for example, an elliptical shape.

(Modification 2) FIG. 8 shows an example in which a sealing flange 26a is formed integrally with the chip 2 in place of the sealing ring R described above. In the description of the modified example 2, the same or similar parts as those in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted as much as possible.

  In FIG. 8, the chip 2 includes a head portion 20 and a shaft portion 25 protruding from the end face of the head portion 20. The shaft portion 25 has a neck portion 26a located on the lower side of the head portion 20, and the neck portion 26a is formed to have a smaller diameter than the neck portion 26 of the first form. The neck portion 26a is integrally formed with upper and lower sealing flanges 26b and 26b. Each flange portion 26b is capable of sealing between the neck portion 26a and the large-diameter portion 11b by press-contacting to the corresponding inner circumference of the large-diameter portion 11b of the nozzle body, so that the fluid can be sealed between the passage 18, the contracted portion 18 a, the diameter. Even if it flows into the cylinder part 10 through the small hole part 19 with a predetermined pressure, the liquid leakage between the shaft part 25 and the large diameter part 11b is prevented. Thus, in the second modification, the number of parts and the number of assembly steps can be reduced while maintaining the quality as compared with the first embodiment. In the second modification, the groove 29a (not shown) and the groove 29b have the same configuration as in the first modification. The spray angle θ is larger than that in the first embodiment.

(Modification 3) FIG. 9 shows an example in which the fluid branch portion 28 provided in the chip 2 of the first embodiment is changed. (A) is a perspective view of the chip, and (b) is a perspective view in a state rotated approximately 90 degrees from the state of (a). In the description of the third modification, the same reference numerals are given to the same or similar parts as those in the first embodiment and the first and second modifications, and duplicate descriptions are omitted as much as possible.

  The fluid branching portion 28A of Modification 3 is provided at a location facing the small-diameter hole portion 19 in the shaft portion 25, and introduces the fluid that flows into the cylindrical portion 10 from the small-diameter hole portion 19 into the hole. And discharge holes 28e and 28f communicating the upper side of the grooves 29a and 29b with the introduction hole 28d. Then, the fluid that flows into the cylindrical portion 10 from the small-diameter hole portion 19 flows into the introduction hole 28d, and is almost equally divided into two, from the fluid passage FP including the groove 29a to the discharge hole 28e, and the discharge hole 28e. It branches and flows into the fluid passage FP including the groove 29b.

  Therefore, also in the modified example 3, the fluid such as water flowing into the cylindrical portion 10 from the small-diameter hole portion 19 is fluidized by the fluid branching portion 28A having a hole structure, and the fluid passage FP including the groove 29a and the fluid passage including the groove 29b. Since the FP is almost equally divided into two, the swirl flow formed in each fluid passage FP and the swirl flow formed from each fluid passage FP to the discharge port 12 (the small diameter hole 12a) as designed. The same effect as that of the fluid branch portion 28 described above can be obtained. In the third modification, the groove 29a (not shown) and the groove 29b have the same configurations as those in the first and second modifications. When such a fluid branch portion 28A is generalized, the above introduction holes are single holes, and the above discharge holes are provided by the number of fluid passages FP.

(Second Embodiment) FIGS. 10 to 15 show a nozzle device 7 according to a second embodiment corresponding to FIGS. The nozzle device 7 has a linear shape, and includes a cylindrical nozzle body 3 provided with a discharge port 33 on the one end 30 a side, and a chip 4 incorporated in the cylindrical shape of the nozzle body 3. It has a substantially spiral fluid passage FP that is formed between the cylindrical inner peripheral surface 32 (32a) and the outer peripheral surface of the tip 4 and extends from the other end 30b side of the nozzle body 3 toward the discharge port 33. A fluid such as water introduced into the cylinder of the main body 3 is swirled by the fluid passage FP and can be ejected from the discharge port 33. The nozzle body 3 and the chip 4 are both injection-molded products using synthetic resin, but may be other than resin.

  The nozzle body 3 is integrally formed on the coaxial line with a front cylinder part 30 forming a discharge port 33 and a connection part 31 provided on the rear side of the front cylinder part 30 so that a target supply fluid can be introduced into the cylinder. Forming. In the nozzle body 3, the shaft portion 42 of the chip 4 is inserted and disposed in the cylindrical shape of the connection portion 31. The tip 4 protrudes from the lower surface of the head 40 and is inserted into the nozzle body 3. The tip 43 is a cylindrical portion 43, a small tube portion 45, a plate portion 44, and a spiral shape protruding from the lower side surfaces of the plate portion 44. Or it has arcuate wings 47a and 47b. In this structure, a plurality (two in this example) of fluid passages FP are defined between the plate portion 44 and the blade portions 47a and 47b and the cylindrical inner peripheral surface 32 (32a) of the nozzle body 3. . Further, the chip 4 has a small diameter hole portion 41 which is a flow rate adjusting means and a fluid branch portion 48 which is a fluid branch means for branching and flowing the fluid flowing from the small diameter hole portion 41 into each fluid passage FP described later. ing. These details will be clarified below.

  Here, the nozzle body 3 includes a front cylinder portion 30 forming a discharge port 33 and a connection portion 31 connected to the front cylinder portion 30 on a coaxial line, and the whole is substantially I-shaped or linear. . The outer periphery of the front cylinder part 30 has a regulation projection 35 and a plurality of engagement projections 36 which are provided on one end 30a side and which are attachment means for the attachment plate part 8a. The inner peripheral surface 32 of the front cylinder part 30 has a discharge port 33 provided on one end 30 a side and along the central axis, and a reduced flow part 32 c that is gradually reduced in diameter toward the discharge port 33.

  The inner peripheral surface 32 of the connecting portion 31 has an inner diameter 32a that is slightly smaller than the inner diameter 32b on the front cylinder portion 30 side, and has an engaging groove 34 provided on the inlet side. On the outer peripheral surface of the connecting portion 31, a plurality of rotating claws 31 a that are difficult to come off when inserted into the supply pipe 9 such as a hose are provided.

  That is, the restricting protrusion 35 protrudes around the one end 30a. Each engagement protrusion 36 protrudes in a wedge shape around the one end 30a side. Then, the restricting protrusion 35 and the engaging protrusion 36 are in a state where one end side including the restricting protrusion 35 side is inserted into the attachment hole 8a provided in the attachment plate portion 8a as inferred from FIG. 10 and FIG. The mounting plate 8a can be held on the mounting plate 8a by sandwiching both surfaces of the mounting plate 8a between the restricting projection 35 and the engaging projection 36. Note that the mounting plate portion 8a is a part of the nozzle case 8A that houses a part of the nozzle device 7 and the supply pipe 9 as shown in FIG.

  The engaging groove 36 engages with a protrusion 43 a that protrudes around a cylindrical portion 43 formed below the head portion 40 in the shaft portion 42 of the chip. The discharge port 33 is an orifice through which the fluid flows out, and is composed of a round hole 33a having the smallest diameter on the back side and an inclined enlarged hole 33b that is divergent on the outside. Although spray angle (theta) 1 is arbitrary, it is normally set to about 50 degree | times-120 degree | times. The contracted portion 32c guides the fluid to the discharge port 33 so as to be compressed or contracted in a state where the fluid is formed into a swirling flow by the fluid passage FP as shown in FIG. Reference numeral 30c denotes a tip protruding portion that protrudes so as to border the tip end side of the inclined enlarged hole 33b with respect to the end face of the one end 30a.

  On the other hand, the chip 2 has a large-diameter head portion 40 and a shaft portion 42 formed on a coaxial line. The shaft portion 42 is connected to the head portion 4 to be engaged with the inner diameter 32a of the nozzle body 31, a small tube portion 45 that is connected to the tube portion 43 and is smaller in diameter than the tube portion 43, and a small tube. The plate portion 44 is disposed so as to maintain a gap or opening 46 from the portion 45, and spiral or arcuate wing portions 47 a and 47 b projecting from both lower side surfaces of the plate portion 44. Each wing portion 47a, 47b is provided with small grooves 47c, 47c where the wing portions intersect each other. Each small tube portion 45 and the plate portion 44 are connected to each other by a pair of piece portions 44 a extending from a portion 180 degrees away from the periphery of the small tube portion 45. The cylinder portion 43 is provided with a plurality of protrusions 43a on the outer periphery.

  Further, the head 40, the cylinder part 43, and the small cylinder part 45 are provided with a small-diameter hole part 41 that is a flow rate adjusting means penetratingly formed in the center. The small-diameter hole portion 41 has a diameter smaller than the inner diameter of the nozzle main body 3 and communicates with the opening 46 so that the fluid flowing into the fluid passage FR can be adjusted to a predetermined flow rate. A mountain-shaped fluid branch 48 is provided below the opening 46. The fluid branching portion 48 is formed on both sides of the plate portion 44, with the peak of the mountain located directly below the small-diameter hole portion 41 and substantially equally dividing the fluid flowing from the small-diameter hole portion 41. Each fluid passage FP is branched and introduced.

(Operation of the second embodiment) The main operation characteristics of the nozzle device 7 will be described below.
(1) In the assembly operation, the shaft portion 42 of the chip 4 is inserted into the nozzle body 3. In the middle of the insertion, the protrusion 43a hits the inner diameter of the other end 30b of the connecting portion 31. When the chip 2 is further pushed in, the head portion 40 abuts against the end surface of the connection portion 31 and at the same time, the protrusion 43a engages with the engagement groove 36 and is fixed. That is, the nozzle device 4 is completed by incorporating the chip 4 into the nozzle body 3 by a one-touch operation.

(2) FIG. 15 shows an example of use of the nozzle device 7 described above. For example, the nozzle device 7 is accommodated in the nozzle case 8A, and is held by the holding structure of the above-described restricting protrusion 35 and the engaging protrusion 36 with respect to the mounting plate portion 8a constituting the nozzle case 8A. For example, when the nozzle device 7 is used for a toilet similar to that shown in FIG. 19A, the nozzle case 8A is disposed at a corresponding portion of the toilet seat or the toilet seat body. A corresponding end of the supply pipe 9 is connected to the connection part 31, and a fluid such as water is supplied from the supply pipe 9 to the small-diameter hole part 41 at a predetermined pressure. Of course, the nozzle device 7 may be used for other purposes, and can be used in various fields as exemplified in paragraph 0002.

(3) In the nozzle device 7 described above, fluid such as water is supplied to the small-diameter hole portion 41 of the connection portion via the supply pipe 9. Then, the fluid such as water flows into the opening 46 and around the small-diameter hole portion 41 as shown in FIG. 12 (c), the presence of chevron-shaped fluid branch section 48 beneath, one side of the plate portion 44 And a fluid passage FP (hereinafter abbreviated as a fluid passage FR including the blade portion 47a) defined between the one blade portion 47a and the inner peripheral surface 32, the other side surface of the plate portion 44, and the other blade portion 47b. And a fluid passage FP (hereinafter, abbreviated as a fluid passage FR including the wing portion 47b) partitioned between the inner peripheral surface 32 and the fluid.

(4) In other words, the fluid such as water entering the opening 46 and the periphery thereof from the small-diameter hole portion 41 serving as the flow rate adjusting means is caused by the fluid branching portion 48 facing the small-diameter hole portion 41. The fluid passage FP including 47a and the fluid passage FP including the wing portion 47b are almost equally divided into two parts. In FIG. 12C, the fluid passage FP including the wing portion 47a is located on the upper side of the paper surface, and the fluid passage FP including the wing portion 47b is located on the lower side of the paper surface although not shown. In the figure, as a flow of fluid such as water, the flow from the small-diameter hole portion 41 to the inside of the opening 46 and the periphery thereof is shown by a solid line. As a flow after branching by the fluid branch portion 28, the flow of the fluid passage FP including the wing portion 47a is also indicated by a solid line, and the flow of the fluid passage FR (not shown) including the wing portion 47b on the lower side of the drawing is indicated by a broken line. .

  That is, in this example, a fluid such as water is equally divided into a fluid passage FP including the wing portion 47a and a fluid passage FP including the wing portion 47b. Therefore, a swirl flow formed in each fluid passage FP, Furthermore, it becomes possible to make the swirl flow formed from each fluid passage FP to the discharge port 33 (the small diameter hole 33a) approach a designed pattern. As a result, the nozzle device 7 can maintain a good injection pattern as shown in FIG. 15, and can maintain the injection angle θ1 and the injection distance at values as designed. This operation can eliminate or alleviate problems such as disturbance of uniformity, streaks, partial deviation, etc., which are likely to occur with conventional nozzle devices, as an injection pattern injected from the discharge port 33. means.

(Modification) This modification is an example in which the part forming the flow rate adjusting means is divided from the chip of the second embodiment, and is constituted by the chip 5 and the dedicated flow rate adjusting member 5A. In the description of this modified example, the same or similar parts as those in the second embodiment are denoted by the same reference numerals, and redundant descriptions are omitted as much as possible.

  The nozzle body 3 has a locking groove 32d formed in the cylinder on the other end 30b side, but the other configuration is the same as that of the second embodiment. The chip 5 has a configuration in which the head side including the piece 44a of the second form is omitted. That is, the tip 5 includes a plate portion 56 having a plate width that comes into contact with the small-diameter hole 33 a, spiral or arcuate wing portions 57 a and 57 b protruding from the lower side surfaces of the plate portion 56, and the plate portion 56. A mountain-shaped fluid branching portion 58 protruding upward is integrally formed. Each wing portion 57a, 57b is provided with a small groove 57c, 47c where the wing portion intersects. The wing portions 57a and 57b are formed to be slightly larger than the plate width of the plate portion 56 as compared with the second embodiment.

  In the tip 5 described above, the plate portion 56 engages with the small-diameter portion 32 a constituting the inner peripheral surface 32, and each of the wing portions 57 a and 57 b and the large-diameter hole 32 a constituting the inner peripheral surface 32 have a diameter. It is locked between the small holes 32b.

  The flow rate adjusting member 5A includes a head portion 50, a cylindrical portion 53, a small cylindrical portion 55 and a pair of piece portions 54a that protrude from the small cylindrical portion 55 and spaced apart by 180 degrees, and a through-hole formed in the center. And a small-diameter hole 51 having a small diameter. The head 50 is engaged with the locking groove 32d. The cylindrical portion 53 is engaged with the large-diameter hole 32a, and the small cylindrical portion 55 is engaged with the large-diameter hole 32a via each piece 54a. In this assembled state, a predetermined gap is maintained between the chip 5 and the flow rate adjusting member 5A. A peak of a mountain shape constituting the fluid branching portion 58 is located directly below the small-diameter hole portion 51.

  Therefore, also in this modified example, the fluid such as water flowing in from the small-diameter hole 51 serving as the flow rate adjusting means is a fluid passage including the blade part 57a by the fluid branching part 58 facing the small-diameter hole 51. That is, the fluid passage defined by one side surface of the plate portion 56, the wing portion 57a, and the inner peripheral surface 32, and the fluid passage including the wing portion 57b, that is, the other side surface of the plate portion 56, the wing portion 57b, and the inner peripheral surface 32 are defined. Into the fluid passage that is almost equally divided into two.

  As described above, the nozzle device of the present invention only needs to have the configuration specified in each claim, and the details can be further changed or developed with reference to this form and modification. As an example, the engagement structure between the engagement hole 15c and the protrusion 24 in the first form and the engagement structure between the engagement groove 36 and the protrusion 43a in the second form can be changed to other engagement means as necessary. It is. The mounting structure fixed to the mounting plate portion 8a of each form can be arbitrarily changed.

1 .... Nozzle body (10 is the cylinder)
2 ... Tip (20 is head, 25 is shaft)
3 .... Nozzle body (30 is a cylinder part, 31 is a connection part)
4 .... chip (40 is head, 42 is shaft, 43 is cylinder, 44 is plate)
5A: Flow rate adjusting member (flow rate adjusting means)
5B... Chip 6... Nozzle device (first form)
7 .... Nozzle device (second form)
8 .... Nozzle case (8a is the mounting plate, 8b is the mounting hole)
8A ... Nozzle case (8a is a mounting plate, 8b is a mounting hole)
9... Supply pipe 11.
12 .... Discharge port (12a is a small-diameter hole, 12b is an inclined enlarged hole)
15c ... engagement hole (engaged part)
16... Recess for positioning (positioning means)
17 ··· Connection 18 ··· Passage (18a is the contraction)
19... Small diameter hole (flow rate adjusting means)
23... Projection for positioning (positioning means)
24... Projection (engagement part)
28... Fluid branching section (fluid branching means, 28a and 28b are vertical projections)
28A: Fluid branching portion (fluid branching means, 28d is an introduction hole, 28e and 28f are discharge holes)
29a... Groove 29b... Groove 31... Connection portion 32...
33... Discharge port (33a is a small-diameter hole, 33b is an inclined enlarged hole)
34... Engaging groove (engaged part)
41... Small diameter hole (flow rate adjusting means)
43a ... projection (engagement part)
46 ... Opening 47a ... Wing 47b ... Wing 48 ... Fluid branch (fluid branching means)
58 ··· Fluid branching part (fluid branching means)
FP ... Fluid passage

Claims (10)

A cylindrical nozzle body provided with a discharge port on one end side; and a chip incorporated in the nozzle body; and formed between a cylindrical inner peripheral surface of the nozzle body and an outer peripheral surface of the chip. A nozzle device having a substantially spiral or arcuate fluid passage extending toward the discharge port of the nozzle body, and ejecting the fluid introduced into the nozzle body from the discharge port in a swirl flow by the fluid passage Because
A flow rate adjusting means that is provided in the nozzle body and has a diameter smaller than the inner diameter of the nozzle body and adjusts the fluid flowing into the fluid passage to a predetermined flow rate;
A nozzle device comprising a plurality of the fluid passages, and fluid branching means for branching and flowing the fluid flowing from the flow rate adjusting means into the fluid passages.   The nozzle device according to claim 1, wherein the flow rate adjusting means is provided around the nozzle body.   The nozzle device according to claim 1, wherein the flow rate adjusting unit is provided in the nozzle body, and the fluid branching unit is provided in the tip. The nozzle device according to claim 3, wherein the fluid branching unit is formed integrally with the chip.   2. The fluid branching means is provided in the tip, and the flow rate adjusting means is assembled as a dedicated adjusting member in the nozzle body corresponding to the fluid branching means. The nozzle device described.   6. The nozzle body and the tip are connected by engagement of an engaging portion provided on an outer periphery of the tip and an engaged portion provided on the nozzle body. The nozzle device according to any one of the above.   The nozzle device according to claim 1, further comprising positioning means for positioning the tip with respect to the nozzle body. It said fluid passageway, according to any of claims 1 to 7, characterized in that it is defined between the cylindrical inner peripheral surface of the groove and the nozzle body extending on the outer circumference longitudinal direction of the tip Nozzle device. Said fluid passage, a nozzle device according to any one of claims 1 to 7, characterized in that it is defined between the groove and the tip extending cylindrical inner circumferential longitudinal direction of the nozzle body. The fluid passage is formed between a plate part that constitutes the tip and is inserted into the nozzle body, a blade part that protrudes from both lower side surfaces of the plate part, and a cylindrical inner peripheral surface of the nozzle body. nozzle device according to any of claims 1 to 7, characterized in that it is divided into.

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