JPH039723Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of Industrial Application) The present invention relates to an improvement in the mounting structure of a bubble jetting fitting and a water absorption fitting in a bubble bathtub which obtains a pine surge effect by jetting a bubble stream toward a bather. (Prior Art) Bubble bathtubs have been known for a long time. As disclosed in Japanese Utility Model Publication No. 62-14864, the bubble bathtub has bubble jetting fittings provided on the backrest side and foot side of the bathtub body, and water absorption fittings provided at desired locations.
It is connected by a circulation pipe equipped with a circulation pump. Then, by operating the circulation pump, bath water is sent to a bubble jetting metal fitting, and a bubble flow is jetted from the metal fitting to obtain a pine surge effect. The above air bubble jetting fitting 1', water absorption fitting (not shown)
The main body part 11 formed in a substantially cylindrical shape is loosely fitted into the mounting opening 4a opened in the tank wall 4, and the main body part 1
The flange 11f provided on the outer periphery of the main body 11 and a flange nut 11e screwed onto the outer periphery of the main body 11 sandwich the rim of the mounting opening 4a, and are attached to the tank wall 4 (see FIG. 19). (Problems to be Solved by the Invention) According to the conventional mounting structure described above, when the flanged nut 11e is tightened, the surface area that occurs between the sealing member 7', the tank wall 4, the flanged portion 11f, and the flanged nut 11e. The main body part 11 is fixed by pressure while maintaining watertightness around the mounting opening 4a, and for this reason, the main body part 11 is firmly fixed to the tank wall 4, and the main body part 11 and the tank wall are tightly fixed. 4 are integrated. Therefore, the vibration of the circulation pump that occurs when the circulation pump is operated to eject the bubble flow is transmitted to the tank wall 4 via the circulation pipe 3 and the main body 11.
There was a risk that the tank wall 4 would resonate and cause noise. This noise is noticeable when the bathtub body is made of FRP, or when the bathroom is constructed as a unit bathroom made of panels made of PVC steel sheets. There was a risk that the air could spread to the upper or lower floors, which was an obstacle when installing bubble bathtubs in apartment complexes. The present invention was developed in view of the conventional circumstances described above, and its purpose is to absorb the vibrations of the bubble jetting fitting and the water absorption fitting at the rim of the mounting opening, and to improve the circulation pipe. The aim is to prevent the vibrations transmitted through the tank wall during operation of the circulation pump from being transmitted to the tank wall. (Means for Solving the Problems) In order to achieve the above object, the mounting structure of the present invention has one end and the other end of the mounting opening formed into a tapered shape that widens outward. , between each tapered surface, the flange, and the flange nut, the peripheral surface on the tapered surface side makes watertight line contact with the tapered surface to swingably support the main body around the contact portion. It is characterized by the interposition of an annular packing that forms a gap. (Function) According to the above means, by screwing the flanged nut onto the main body that is loosely fitted into the mounting opening, and tightening the flanged nut, the flanged nut and the flange form the edge of the mounting opening. At this time, the tightening force of the flanged nut brings the circumferential surface of the tapered side of the annular packing into watertight line contact with the tapered surface, and tightens the area around the mounting opening. The main body is fixed in a state in which watertightness is maintained, and at the same time there is a gap (play) between the flanged nut, the flange, and the tapered surface to swingably support the main body. Therefore, the main body vibrates separately from the tank wall while being attached to the attachment port. (Example) Examples of the present invention will be described below based on the drawings. First, the embodiment shown in FIGS. 1 to 15 will be described. In the figure, 4 is the tank wall of the bathtub body made of FRP,
Reference numeral 1 denotes a bubble jetting fitting, and numeral 2 denotes a water suction fitting.The bubble jetting fitting 1 and the water suction fitting 2 are connected by a circulation pipe 3 equipped with a circulation pump in the middle, and each is connected to a tank wall 4.
It is attached to the mounting opening 4a opened in the above. The bubble flow jetting fitting 1 includes a bottomed cylindrical main body 11 connecting a circulation pipe 3 and an air supply pipe 5, an injection nozzle 12 provided in the main body 11, and an injection nozzle 1.
2 and a mixing nozzle 13 located in front (see Fig. 1). The main body part 11 has a concave part 11b, a front chamber 11c, and a rear chamber 11d formed in a continuous manner from the front opening 11a to the bottom wall. They each communicate with pipe 3. Moreover, the main body part 11 is inserted into the attachment port 4a from the front opening 11a side so that its front end projects into the bathtub main body, and includes a flange nut 11e that is screwed onto the outer periphery of the front opening 11a, and a flange part 11f provided around the outer wall. It is attached to the mounting opening 4a by holding the mouth edge of the mounting opening 4a between the two. Furthermore, a groove 11g is provided around the outer wall at a location facing the inner circumferential surface of the mounting port 4a, and this groove 11g has an annular auxiliary groove that maintains watertightness between the mounting port 4a and the main body portion 11. A gasket 11h is fitted. The auxiliary packing 11h is made of rubber, synthetic resin, or the like with desired elasticity. The mounting opening 4a has a tapered surface 4b on the edges of one end and the other end thereof, which widens outward and faces the flanged nut 11e or the flanged portion 11f.
is provided. Furthermore, an annular packing 7 is interposed between each tapered surface 4b and the flanged nut 11e and the flanged portion 11f. The annular packing 7 is integrally molded with rubber, synthetic resin, or the like having desired elasticity and watertightness to have a rectangular or circular cross section, and its peripheral surface on the tapered surface 4b side is in line contact with the tapered surface 4b in a watertight manner. The tapered surface 4 and the flanged nut 11e,
While maintaining watertightness between the flange portions 11f, a gap a is formed around the contact portion to swingably support the main body portion 11. The mixing nozzle 13 includes a spherical part 13a rotatably accommodated in a mounting step 11b' stepped at the rear end of the recess 11b, and a front opening 1 from the spherical part 13a.
A throat portion 13b protruding toward 1a is integrally molded, so that the protruding angle of the throat portion 13b into the bathtub body can be adjusted as desired. The spherical part 13a is provided with a mixing chamber 13a' that expands toward the injection nozzle 12 inside, and an annular rubber gasket 8 provided in the mounting step part 11b'.
It is held between a and 8b. The throat portion 13b has a channel 13c of a desired diameter communicating with the mixing chamber 13a' inside thereof, and a locking portion 13d at the tip of the channel 13c and a groove 13e near the rear end. A fluid regulator 9 is installed inside the periphery. The flow regulating plate 9 is made up of a cylindrical outer frame portion 9a that can be inserted into the flow path 13c, and a plurality of flow regulating plates 9b that radiate in a cross-shaped cross section from the center of the outer frame portion 9a to the peripheral wall. A notch-shaped protrusion 9c is formed on the outer periphery of the outer frame portion 9a to releasably engage with the groove 13e under the action of a spring.
The flow path 13c is divided into a plurality of divided flow paths 9d along the ejection direction of the bubble flow by the respective rectifying plates 9b. Furthermore, an inclined surface 10 that slopes from the center of the flow path 13c toward the outer end is provided at the end of each of the current plates 9b on the upstream side of the flow path 13c. The inclined surface 10 is inclined at an acute angle from the center of the end toward the downstream side of the flow path 13c. Furthermore, over its entire length, the edge 10a has an acute-angled cross section.
has been formed. The injection nozzle 12 is connected to the rear chamber 1 by means of a circulation pipe 3.
It is formed into a substantially conical shape with a small diameter tip so that the circulating water supplied in the mixing chamber 13a' can be vigorously injected into the mixing chamber 13a'.
It is inserted at 3a'. In the figure, 8c is a decorative cover that covers the tip of the main body 11 and prevents the gaskets 8a and 8b from falling off. The water absorption fitting 2 includes a cylindrical main body part 21 whose distal end opening 21a is inserted into the mounting opening 4a and projects into the bathtub body, and the circulation pipe 3 is connected to the proximal end side, and the main body part 2
1, and a cover 22 which is detachably attached to the tip opening 21a with a strainer 22a fitted therein, leaving a water inlet 22b (see FIG. 4). The water absorption fitting 2 is the bubble flow ejection fitting 1 described above.
Similarly, it has an auxiliary gasket 11h, and furthermore, a brim-like gasket 7 is provided between the tapered surface 4b of the mounting port 4a.
The rim of the mounting port 4a is held between the flange nut 11e screwed onto the outer periphery of the tip opening 21a of the main body 21 and the flange 11f provided around the outer wall, and the main body 21 is inserted into the mounting port. 4a so that it can swing. The operation of this embodiment will be explained below. The sealing effect generated between the annular packing 7 and the tapered surface 4b by tightening the flanged nut 11e and the auxiliary packing 11h also maintain watertightness around the mounting opening 4a. do. At this time, the annular packing 7 brings the peripheral surface on the tapered surface 4b side into line contact with the tapered surface 4 in a watertight manner, forms a gap a around the contact portion, and tapers the flanged nut 11e and the flanged portion 11f. A play for swingably supporting the main body parts 11, 21 is provided between the main body parts 11, 21 and the surface 4b. As a result, even if the vibration of the circulation pump is transmitted to the main body parts 11 and 21 via the circulation pipe 3 when the circulation pump is in operation, the main body parts 11 and
21 is vibrated within the attachment port 4a separately from the tank wall 4 using the annular packing 7 as a fulcrum, and the vibration of the pump is prevented from being transmitted to the tank wall 4 as much as possible. Further, the bathtub water 6 sucked from the water suction fitting 2 by the operation of the circulation pump is sent to the bubble flow injection fitting 1 via the circulation pipe 3, and this circulating water is sent to the injection nozzle 1.
2, the liquid is injected toward the flow path 13c. Then, the air supplied from the air supply pipe 5 is mixed with the circulating water (the jet flow) in the mixing chamber 13a' due to the suction effect of the jet pressure, thereby generating a bubble flow. At this time, the circulating water (spouting flow) is divided into several branch streams by a plurality of rectifying plates 9b extending approximately radially, and the jetting direction of each branch stream can be adjusted by each rectifying plate 9b. By passing through the flow path 13c while rectifying the flow to a state close to laminar flow,
To minimize the occurrence of turbulence on the surface of circulating water (spouting flow) and to reduce as much as possible the collision sound when circulating water (spouting flow) collides with bathtub water 6 in a bathtub. At the same time, due to the synergistic effect of the inclined surface 10 and the edge 10a, the circulating water (jet flow) flows to the rectifying plate 9b.
This reduces the pressure resistance when the bubbles collide with the end on the side of the mixing chamber 13a', and reliably reduces the drop in the jet pressure of the bubble flow due to rectification of the circulating water (spout flow). Further, at this time, the packings 8a and 8b absorb vibrations of the mixing nozzle 13 and prevent the vibrations from being transmitted to the tank wall 4. Further, the fluid regulator 9 has a distal end portion and a locking portion 13d.
It is immovably supported within the flow path 13c by the collision with the projecting piece 9c and the engagement between the protruding piece 9c and the groove 13e. Further, in the event of breakage, etc., the protruding piece 9c and the groove 13e are disengaged and taken out from the inside of the flow path 13c. The order of taking out the rectifier 9 will be explained below.
First, the decorative cover 8c is rotated and removed from the recess 11b, and then the mixing nozzle 13 and gaskets 8a, 8b are taken out from the mounting step 11b'. Then, using a tool such as a screwdriver, the protruding piece 9c and the groove 13e are disengaged, and the fluid regulator 9 is taken out from the mixing chamber 13a' side. In this embodiment, by providing the auxiliary gasket 11h, watertightness around the attachment opening 4a can be maintained more reliably. Furthermore, in this embodiment, by providing the flow regulator 9, it is possible to suppress the generation of impact noise due to the ejection of the bubble flow, and to prevent resonance of the tank wall 4 caused by the impactor. Therefore, it is possible to more reliably suppress the generation of noise when the bubble flow is ejected. Further, by providing the inclined surface 10 and the edge 10a, it is possible to prevent the deterioration of the pine surge effect due to rectifying the bubble flow. Furthermore, by providing the flow regulating plate 9 in a detachable manner on the throat portion 13b, there is no need to replace the entire jet throat 13 when the regulating plate 9b is damaged.
The replacement cost can be reduced. In addition, the attached table shows the bubble bathtub (E in the table) equipped with the bubble flow jetting fitting 1 in this embodiment and the bubble bathtub (F in the table) equipped with the conventional product 1' shown in FIG.
It shows the measurement results of noise and ejection pressure during ejection of bubble flow. The noise was measured at a position 1 m away from the center of the bathtub and 1.2 m above the floor, and the jet pressure was measured at a position 1 cm away from the opening end of the mixing nozzle 13. As a result, it was found that the bubble flow jetting fitting 1 of this embodiment has a noise reduction of 4 dB compared to the conventional device 1', and the bubble flow jetting pressure is approximately the same. Therefore, the noise energy when the bubble flow is ejected is approximately 1/
2, and a rectifier plate 9 is provided in the flow path 13c.
It was confirmed that the bubble flow caused by the provision of b was able to prevent a decrease in ejection pressure as much as possible.

[Table] Furthermore, the engagement means for attaching the flow regulator 9 into the flow path 13c is not limited to that shown in FIG. Alternatively, the snap spring 15 may be removably fitted into a groove 13e as shown in FIG. 7, or a projection 16 and a recess 17 may be fitted into a recess 17 as shown in FIGS. 8 and 9. do not have. Furthermore, the radial shape of the current plate 9b is a cross shape with the outer end as the free end as shown in FIG. 10, a cross shape with the inner end as the free end as shown in FIG. 11, and a cross shape as shown in FIG. A cruciform shape with dividing pieces 9d' that partition the inside of each divided flow path 9d, and a desired cross-sectional shape radiating from the center of the flow path 13c to the peripheral wall of the outer frame portion 9a as shown in FIGS. 13 to 15. It can also be done. In that case, a flow regulating body 9 such as shown in FIGS. 10, 11, and 13 is used to reduce the contact area between the current plate 9b and the circulating water (jet flow) to increase the jet pressure of the bubble flow. , or prepare in advance a regulating fluid 9 such as shown in FIGS. 12 and 14 that increases the contact area between the current plate 9b and the bubble flow to weaken the ejection pressure of the bubble flow, and By arbitrarily replacing the bubbles, it is possible to obtain a bubble flow with an appropriate ejection pressure according to the user's preference. Furthermore, in this case, if the attachment means shown in FIG. 5 is used, the fluid regulator 9 can be replaced extremely easily without removing the mixing nozzle 13 from the main body 11. Next, the embodiment shown in FIGS. 16 and 17 will be described. In this embodiment, by using a circular cross section for the brim-shaped packing 7 in the above-mentioned embodiment, watertightness around the mounting opening 4a can be more reliably maintained without providing the auxiliary packing 11h described above. It's summery. Next, the embodiment shown in FIG. 18 will be described. This embodiment shows a modification of the bubble jetting fitting 1 in the embodiment described above. The bubble flow jetting fitting 1 is constructed by installing a mixing nozzle 13 in a concave portion 11b in a main body portion 11 in a non-rotatable manner. The mixing nozzle 13 has a mixing chamber integrally provided at the rear end of the throat portion 13b, and a threaded portion 13 on the outer periphery.
b' is carved, and this threaded part 13b' is connected to the recessed part 11.
b It is attached to the main body part 11 by screwing into the rear end. In the case where the bubble flow jetting fitting 1 in this embodiment has a limited amount of protrusion into the bathtub at its tip,
That is, it is used when converting an ordinary bathtub that does not have a recess (not shown) for attaching the bubble jetting fitting 1 into a bubble bathtub. As a result of experiments, when using the mixing nozzle 13 shown in FIGS. 5 to 8, the flow regulator 9 shown in FIGS. 10 to 15, and the bubble flow jetting fittings shown in FIGS. 16 and 18, It was confirmed that the same or similar values could be obtained with the results in the above table. (Effects of the invention) Since the present invention is configured as explained above, the annular gasket maintains watertightness around the installation opening, and the main body of the bubble flow jetting fitting and water discharging fitting is made separate from the tank wall. By vibrating, it is possible to prevent as much as possible the vibration of the circulation pump transmitted through the circulation pipe during operation of the circulation pump from being transmitted to the tank wall through the main body. Therefore, even if the bathtub body is made of FRP or used in a unit bathroom, there is no risk of the bath wall resonating due to the vibration of the circulation pump and causing noise, which may cause discomfort to bathers. In addition, it is possible to provide an extremely simple mounting structure for a bubble jetting fitting and a water absorption fitting in a bubble bathtub suitable for installation in an apartment complex.

[Brief explanation of the drawing]

The drawings show embodiments of the invention, FIGS. 1 and 16.
18 are longitudinal cross-sectional side views of the bubble flow jetting fittings attached to the tank wall, respectively, and FIGS. 16 and 18 are partially omitted, respectively. FIG. Figure 3 is an exploded perspective view of the mixing nozzle and fluid regulator.
Figures 4 and 17 are longitudinal side views of the water absorption fittings attached to the tank wall, with some parts omitted in Figure 17, and Figures 5 to 8 show the engagement with the throat of the fluid regulator, respectively. A longitudinal side view of a mixing nozzle showing a modification of the means;
FIG. 9 is a sectional view taken along the line 9--9 in FIG. 8, and FIGS. 10 to 15 are longitudinal sectional front views showing modified examples of the flow regulator. Further, FIG. 19 is a longitudinal sectional side view of a bubble flow jetting fitting showing a conventional mounting structure. In the figure, 4...tank wall, 1...bubble flow jet fitting, 2...water absorption fitting, 3...circulation pipe, 11,
21... Main body, 4a... Mounting opening, 11e... Flange nut, 4b... Tapered surface, 11f... Flange, 7... Annular packing, a... Gap.

Claims (1)

[Scope of utility model registration request] The cylindrical main body is loosely fitted into the mounting opening drilled in the tank wall, and the mounting opening is formed by a flange provided on the outer periphery of the main body and a flange nut screwed onto the outer periphery of the main body. The mounting structure is such that the main body is fixed to the mounting opening by pinching the edges, and the opening edges at one end and the other end of the mounting opening are formed into a tapered shape that widens outward. A gap is provided between the tapered surface, the flange, and the flange nut so that the circumferential surface on the tapered surface side makes watertight line contact with the tapered surface and supports the main body swingably around the contact area. A mounting structure for a bubble jetting fitting and a water absorption fitting in a bubble bathtub, characterized in that a brim-like packing is provided.