JPH02211150A - Air intake part structure for bubble generating bathtub - Google Patents

Abstract

PURPOSE:To allow the adjustment to be automatically performed in case of providing air intake parts respectively in two or more jet nozzles by providing in the air intake part a bubble amount adjusting valve and a bubble amount adjusting valve unit open- close actuator motor automatically adjusting a bubble amount. CONSTITUTION:A bubble amount adjusting valve 87, provided for opening and closing a communication path 76 between a connection part 83 and an air intake part main unit 80, is constituted of a cylindrical valve body 88, bubble amount adjusting valve unit open-close actuator motor M2 mounted to a bottom part 88a of this body 88 and a valve unit 90 mounted to the point end of a valve unit supporting rod 89 mounted to this motor M2 and made possible to be attached to and separated from a valve seat 88b in an upper edge part of the valve body 88. The bubble amount adjusting valve unit open-close actuator motor M2 rotates a ball screw 73 with a magnet 75 by electrifying a coil 72. And by longitudinally actuating the valve unit supporting rod 89 connected being associated with the motor M2, the valve unit 90, mounted to a point end of the rod 89, is attached to and separated from the valve seat 88b, adjusting an amount of air sucked to each jet nozzle through the inside of a suction pipe 12.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an air intake structure for a bubble-generating bathtub.

(B) Prior Art Conventionally, as one form of the air intake part of a bubble-generating bathtub, there is one described in Japanese Utility Model Application Publication No. 59-133218.

That is, as shown in FIG. 10, the air intake section has a cap body (b) fitted into the upper end opening of the air intake section main body (a) whose lower end is communicatively connected to the jet nozzle. Connect the male screw part (c) extending from the center of the lower surface of the cap body (b) toward the air intake body (a) C to the female screw part (d) provided in the air intake body (a) in the same room. jA, the rotation and tightening of the cap body (b) is adjusted to increase the air inflow formed between the inner surface of the cap body (b) and the upper end opening of the air intake plate body (a). By adjusting the opening and closing of the passage (e), it is possible to increase or decrease the amount of air bubbles mixed into the bath water spouted from the air intake pan body (a) in the jet nozzle.

(c) Problems to be Solved by the Invention However, in the case of the above-mentioned air intake section, the amount of air intake must be adjusted by manually tightening the cap body (b), which makes such operations cumbersome. However, when a plurality of jet nozzles are each provided with an air intake portion, there is a problem in that the trouble is doubled.

Moreover, since the tightening of the cap body (b) is adjusted by screwing the male threaded part (e) into the female threaded part (d), it is only possible to make rough adjustments proportional to the lead angle of the male threaded part (C), and the air There was a problem in that the amount of intake could not be finely adjusted.

Furthermore, with manual operation of the cap body (b), it is not possible to periodically change the amount of air intake, so there is a problem in that it is not possible to enjoy various forms of jet flow with different amounts of bubbles.

(d) Means for Solving the Problems Therefore, in the present invention, a bath water circulation flow path is connected in communication with the jet nozzle attached to the bathtub body, and an air intake part is connected in communication with the bath water forced flow path. In a bubble-generating bathtub, the air taken in from the outside by the air intake part is mixed into the bathwater in the bathwater bullet flow path, and the bubble-containing bathwater can be spouted into the bathtub body from the spouting nozzle, The air intake section has an air bubble amount control valve that adjusts the amount of air supplied into the bath water bullet feeding flow path to control air bubbles in the bath water, and a valve body of the bubble amount control valve that opens and closes. It is an object of the present invention to provide an air intake structure for a bubble-generating bathtub, which is equipped with a motor for opening and closing a valve body for regulating the amount of bubbles, and is capable of automatically varying the amount of bubbles.

Another feature is that the air bubble amount can be finely adjusted by using a minute distance stepless drive motor as the motor for opening and closing the valve body for adjusting the air bubble amount.

(e) Embodiment First, the overall structure of a bubble-generating bathtub equipped with an air intake section according to the present invention will be explained based on the accompanying drawings.

(A) shown in FIGS. 1 and 2 is a bubble generating bathtub,
The bubble-generating bathtub (^) has a box-shaped bathtub body (1) with an opening on the top, and the front and rear walls and left and right side walls have a foot side and a
Dorsal/ventral jet nozzle (2) (2) (3) (3)
(4) A total of six items (4) are provided.

The bathtub body (1) has a flange-like edge (la) of a constant width formed on the periphery, and an air intake portion (5) on the edge (la).
), and four vertically elongated parts (lb) in a transverse V-shape are formed approximately in the center of the left and right side walls, and the same recessed parts (1b) (
The ventral side jet nozzles (4) (4) are attached to the inclined surface (1'b) on the side facing the rear wall (dorsal side) of 1b), facing toward the center of the rear wall.

In addition, a pump protection case (9) is arranged outside the bubble generating bathtub (A), and inside the case (9),
A circulation pump (P) that circulates bath water and the same pump (P)
A filter (43) that filters the bath water circulated by the filter, and a pump drive motor (M) that drives the pump (P).
and a control unit (C) that controls the driving of the same motor (M), a motor (Ml) for opening/closing the valve body for a nozzle, and a motor (M2) for opening/closing the valve body for adjusting the amount of air bubbles, which will be described later. .

Moreover, a bath water circulation channel (D) is interposed between the circulation pump (P) and the bubble generating bathtub (A).

That is, the bath water circulation flow path (D) is connected to the bubble generating bathtub (A).
A bath water suction vibe (10) for sending bath water from the circulation pump (P) to the circulation pump (P), and from the circulation pump (P) to the bathtub (A).
It consists of a bath water bullet delivery vibrator (11) for sending bath water to the body.

The bath suction vibrator (10) is connected to the bathtub body (1).
One end is opened at the bottom of the circulation pump (P), and the other end is connected to the water intake port of the circulation pump (P) so that the bath water is sucked into the circulation pump (P). (P
), one end of which communicates with the spout of the spout nozzle (2) (3).
) and (4), the other ends of which are connected in communication.

In addition, a pressure detection sensor (not shown) for detecting the pressure of the bath water being pumped through the pipe (11) is installed in the middle of the bath water pumping vibrator (11), and the detection result from the sensor is installed. is sent to the control section (C), which controls the jetting pressure of the bath water spouted from each jetting nozzle (2), (3), and (4).

In the above configuration, the gist of the present invention lies in the configuration of the air intake portion (5) described above, and the configuration will be explained below based on FIGS. 3 to 6.

That is, the air intake part (5), as shown in FIG.
There are air intake ports (1) on the edge (1a) of the bathtub body (1).
r), and insert a rectangular box-shaped air intake plate main body (80) with an open top surface into the sudden air intake mounting port (11'),
The mounting flange (80a) formed on the upper end periphery of the air intake main body (80) is engaged with the upper surface of the periphery of the air intake number opening (1r), and is fixed with the mounting bolt (81). The top opening of the sudden air intake main body (80) is covered with a lid (82) with left and right openings, and the air intake (82a) formed only on the outside of the lid (82) connects the outside air with the air intake. It communicates with the inside of the tray main body (80).

As shown in FIGS. 3 and 4, an intake pipe connecting portion (83
) are connected in communication, and one end of the intake pipes (12) (12) are connected in communication with the front and rear walls of the connection part (83), respectively, and the air taken into the air intake plate body (80) is connected to the intake pipes. (83) through each intake vibrator (12) (12
) so that air can be supplied from each intake vibrator (12) (12) to each jet nozzle (2) (3) (4).

In Fig. 3, (84) beam actance type silencer, (
Reference numeral 85) is a check valve, and the check valve (85) prevents the bath water from flowing back into the intake vibe (12).

Moreover, inside the intake pipe connecting portion (83), the connecting portion (
83) and the air intake plate body (80), and an air bubble amount adjustment valve (87) is provided for opening and closing the communication path (86) between the air intake plate body (80) and the air intake plate body (80). Dish body (8
0), a cylindrical valve body 88) with a communicating opening at the bottom;
A motor (M2) for opening and closing the valve body for adjusting the amount of air bubbles attached to the bottom (88a) of the valve body (88),
A valve body support rod (89) is attached to the valve body (89), and a valve body (90) is attached to the tip of the rod (89) and is movable toward and away from the valve seat (88b) formed on the upper edge of the valve body (88). ).

In addition, the air bubble amount adjustment valve (87) is connected to the intake pipe connecting portion (87).
3) The air intake plate can be removed from the inside of the main body (80), so that maintenance and the like of the air bubble amount control valve (87) can be performed easily. (l18d) is the valve body 88)
This is a communication port provided in the peripheral wall of the

In addition, the motor (M2) for opening and closing the valve body for adjusting the amount of air bubbles uses a linear stepping motor with infinitesimal distance stepless drive, as shown in Fig. 6, and the valve body (88)
The cylindrical motor casing (70) is located at the bottom of the
A cylindrical coil (72) is provided coaxially with the valve body (88) within the motor casing (70), and a cylindrical rotor nut (
73) is supported concentrically and rotatably via a bearing (74), and a magnet (75) is fitted to the outer peripheral surface of the rotor nut (73) with the coil (72) facing inside and outside, A valve body support rod (89) is inserted into the rotor nut (73) coaxially with the valve body (88).

Then, a large ball fitting groove (7G) is spirally formed on the outer peripheral surface of the valve body support rod (89), and the large ball fitting groove (7B) is formed in a spiral shape.
A large number of balls (77) are installed in the interior so that they can be moved freely, and the valve body support rod (89) is moved forward and backward steplessly over minute distances in conjunction with the forward and reverse rotation of the rotor nut (73) via the balls (77). It is configured to work. (78) is a rotation regulating piece that prevents the valve body support wood (89) from rotating with the rotor nut (73).

Moreover, the tip of the valve body support rod (89) is connected to the valve body (89).
8) in the center of the bottom (88a) of the rod insertion hole (
89a) and extends into the valve body (88), and a valve body (90) is attached to the tip of the valve body support rod (89).

Further, at the rear end of the valve body support rod (89), there is provided information indicating the amount of movement of the valve body support rod (89), that is, the amount of opening and closing of the valve body (90) due to the movement of the valve body support rod (89). (
A bubble volume adjustment valve body reference position detection sensor (91) is installed to detect the air bubble volume adjustment (adjust the air bubble volume).
91) includes a reference position Hall element (9xa) and a valve body support rod (8) facing the reference position Hall element (91a).
9) Magnet for reference position detection attached to the rear end position (
91b).

And a valve body reference position detection sensor (91) for adjusting the amount of air bubbles.
The controller converts the change in magnetic force between the reference position Hall element (91a) and the reference position detection magnet (91b), which changes according to the movement of the valve body support rod (89) back and forth, into an electrical change. (C) and detects the reference position (for example, fully closed position), and the control unit (C) controls the number of pulses (rotation angle) from the reference position of the motor (M2) for opening and closing the valve body for controlling the amount of air bubbles. I am trying to calculate. (
91c) is a cord connected to the coil (71a) and the valve body reference position detection sensor (91r) for adjusting the amount of air bubbles.

With this configuration, the motor (M2) for opening/closing the valve body for regulating the amount of bubbles energizes the coil (72) to operate the magnet (
The ball screw (73) is rotated together with the ball screw (75), and the valve body support rod (89) connected to the ball screw (73) is moved forward and backward.
) The amount of air sucked into each jet nozzle (2) (3) (4) through the intake vibrator (12) by moving the valve body (90) attached to the tip of the valve (90) toward and away from the valve seat (ggb). In other words, the amount of bubbles mixed into the bath water can be adjusted.

Moreover, the opening/closing amount of the valve body (90) is approximately 50%. ! The result of the reference position detected by the valve element reference position detection sensor (91) for quantity adjustment is sent to the control unit (C), and the control unit (C) controls the energization to the coil (72) based on this. hand,
The valve body 90) is opened and closed appropriately to allow fine adjustment of the amount of air bubbles mixed into the jetted bath water.

In addition, the motor (M2) for opening and closing the valve body for adjusting the amount of air bubbles is one that can move the valve element (22) for adjusting the amount of air bubbles steplessly forward and backward over a minute distance to finely adjust the amount of air bubbles mixed into the bath water. Any other piezoelectric actuator may be used, and a piezoelectric actuator may also be used.

In addition, inside the air intake body (80), there are
As shown in the figure, there are a plurality of silencers (92) formed in a cylindrical shape made of sound absorbing material that has a sound absorbing function and an air purifying function. The silencer support plate (93
) on top of each silencer (9
2) the lower end opening (92a) of the silencer support plate (9
3) Place each silencer (
92), the lower end opening (92a) of the silencer support plate (
The holes (93) are aligned with and communicate with a plurality of communication holes (94) provided in the hole (93).

The upper surface of each silencer (92) is closed by a lid (95), and the air intake port (82a) of the lid (82) is closed.
) into the air intake main body 80), passes through the peripheral wall of the silencer (92) and enters the lower end opening (92).
a), the air is sent to the lower part of the air intake body (80), and the air is sent to the intake vibe (12) via the air bubble amount control valve (87). ('') indicates the air inflow direction.

In this way, the air taken into the air intake main body (80) can be muffled and purified by passing through the peripheral wall of the silencer (92).

Further, as the sound absorbing material, a porous sintered plastic body such as a sintered polyethylene body or a sintered polypropylene body is used.

In addition, to explain other configurations, the foot side, dorsal side, and ventral side jet nozzles (2), (3), and (4) are configured to be able to automatically change the jet amount and jet pressure of bath water. The foot-side jet nozzle (shown in Figures 7 to 9 below)
This will be explained with reference to the configuration 2).

That is, the foot side spout nozzle (2) has a cylindrical nozzle casing (20) cantilevered to the outside of the bathtub body (1) at the foot side spout nozzle connection port (Ig) of the bathtub body (1). A jet flow forming part (50) which is connected in communication with each other and spouts out bubble-mixed bath water into the nozzle casing (20), and a jet flow direction of the bubble-mixed bath water spouted from the jet flow forming part (50). A defined throat portion (60) is arranged and fixed via a decorative cover (2G) located on the bathtub body (1) side.

Below, the components of the jet nozzle (2), such as the nozzle casing (20), the decorative cover (2B), and the throat part (60
) and the jet flow forming section (50) will be explained individually.

As shown in FIG. 7, the nozzle casing (20) has its front end connected in communication with the circular foot-side jet nozzle connection port (1g) opened at the lower part of the front wall of the bathtub body (1), and its rear end Distracted horizontally and posteriorly.

Then, fit a ring-shaped gasket (1h) around the periphery of the foot side jet nozzle connection port (1g), and attach a female screw on the inner peripheral surface to the front surface of the gasket (1h) located inside the bathtub body (1). Attach the rear surface of the ring-shaped female threaded part (1j) formed with
The nozzle casing (2
An outer peripheral male threaded portion (20a) formed on the outer peripheral surface of the front end of 0)
The nozzle casing (20) is attached to the front wall of the bathtub body (1) substantially orthogonally and in a watertight manner by removably screwing on the nozzle casing (20).

Further, the decorative cover (26) has a cylindrical overall shape, has a female threaded portion (28a) formed on the outer peripheral surface, and has a spaced threaded portion (26).
a) is removably screwed onto the inner circumferential male threaded portion (20j) formed on the inner circumferential surface of the front end of the nozzle casing (20), and the front end (26b) of the decorative cover (26) is placed in the inner and outer overlapping state. along the front end of the nozzle casing (2o) and the front end of the ring-shaped female threaded part (II) screwed onto the ring-shaped female threaded part (II), extending in a folded manner to the outer circumferential surface of the same ring-shaped female threaded part (11). (26b) covers the front end of the nozzle casing (20) and the ring-shaped female threaded portion (11), and the throat fixing member (25), which will be described later, is attached to the rear end of the decorative cover (26).
) is fixed.

Further, as shown in FIGS. 8 and 9, an intake pipe connecting portion (20
b) is opened, and the other end of an intake vibrator (12), one end of which is connected to the air intake part (5) (see Fig. 1), is removably connected to the connection part (20b). .

In addition, a third
As shown in the figure and FIG.
A bath water bullet conveying vibrator (11) is removably connected to the body (see Fig. 1). (n) indicates the bath water inflow direction.

Further, the throat portion (60) is composed of a throat (24), a throat fixing member (25) that supports the throat (24) in an adjustable manner, and a front portion of the valve seat forming cylinder (21). ing.

The throat (24) has a base (24a) having a spherical outer peripheral surface, and the base (24a) is connected to the inner peripheral surface of the throat fixing member (25) and the inner surface of the valve seat forming cylinder (21). Throat support surfaces (25a) (21
b) is fitted in slidable surface contact with the base (
A cylindrical tip portion (24b) with a smaller outer diameter than 24a).
) protrudes forward, and the distal end (24b) can be manually adjusted to swing in any direction up, down, left or right around the base (24a).

Furthermore, a certain amount of sliding resistance acts on the base (24a) of the throat (24) from the throat support surfaces (25a) (21b), making it possible to stop the throat (24) at any swing angle. ing.

The base (24a) of the throat (24) is fitted onto the throat support surface (21b), and the top (24'a)
) is located on the same vertical plane as the front end surface of the valve seat forming cylinder (21), and from the center of the base (24a) to the rear end surface (2
4°b) to approximately half the radius of the base (24a), so that the throat support surface (21b
) can be easily fitted into the throat base (24a).

Moreover, the base (24a) of the throat (24) has an inner circumferential surface of the front half having substantially the same diameter as the inner diameter of the distal end (24b), and an inner circumferential surface of the substantially rear half having an enlarged diameter toward the rear. Base (2
4a) The rear end opening diameter is made larger than the inner diameter of the valve seat forming cylinder (21), so that when adjusting the swing of the throat (24),
This allows the hot water to flow smoothly into the throat (24) from the valve seat-forming cylindrical body (21).

Furthermore, the tip (24b) of the throat (24) extends the tip surface to the vicinity of the front end surface located inside the bathtub body (1) of the decorative cover (2G), and the outer circumferential surface of the tip (24b) and the makeup A throat swinging operation space (28) is formed between the cover (26) and the inner circumferential surface thereof.

The throat swinging operation space (28) is
The throat (24) is formed in a size that allows the bather to swing the throat (24) in any direction by pinching the tip (24b) of the throat (24).

Further, the throat fixing member (25) fits into the front inner peripheral surface of the nozzle casing (20) via the positioning groove,
The front surface (25b) was fixed to the rear end of the decorative cover (2G) via a fixing ring (28c), and the inner peripheral surface (25a) corresponded to the front spherical surface of the base (24a) of the throat (24). It is formed into a concave spherical surface, and the inner peripheral surface (25a) supports the front outer peripheral surface of the base (24a) of the throat (24) in slidable surface contact.

In addition, the valve seat forming cylinder (21) is a part of the nozzle casing C2.
0) into the central part of the nozzle casing (20) through the front end opening of the nozzle casing (20) so that the rear end surface is located near the bullet-feeding vibe/connection part (20c), and the front outer circumferential surface The formed protruding step portion (21b) is attached to the nozzle casing (20
) is engaged with the concave stepped portion (201) formed on the inner circumferential surface of the
In addition to regulating rearward sliding and rotation around the axis, the jet flow forming portion (
50) and the air mixing part (70) provided inside the nozzle casing (20).

A throat support surface (21c) having a concave spherical surface corresponding to the rear spherical surface of the base (24a) of the throat (24) is formed on the front inner circumferential surface of the valve seat forming cylinder (21). The throat (21c) is attached to the throat (21c) as described above.
4) is fitted in surface contact with the base (B4a) of the throat (24), whose forward sliding is regulated by the throat fixing member (25). 21) is restricted from sliding forward.

In addition, the jet flow forming part (50) includes an air mixing part (70) provided in the middle of the valve seat forming cylinder (21), and an air mixing part (70) provided in the middle of the valve seat forming cylinder (21).
A valve seat (21a) that forms a jet flow forming flow path (27) immediately behind the valve seat (21a), and a valve body (21a) for controlling the jet flow rate that opens and closes the jet flow forming flow path (27) by moving toward and away from the valve seat (21a). 22)
, a nozzle valve element opening/closing motor (Ml) that opens and closes the jetting amount adjusting valve element (22), and the same motor (Ml).
It consists of a rear wall forming plate (29) that supports the former).

As shown in FIGS. 8 and 9, an annular shape is formed along the outer circumferential surface of the valve seat forming cylinder (21) at a position on the outer circumferential surface of the valve seat forming cylinder (21) perpendicular to the axis of the intake vibe connecting portion (20b). An air inflow path (21d) is formed, and the air inflow path (21d)
The inner intake vibe connecting part (20b) side and the connecting part (2[
)b) and the air inlet (21e) on the opposite side respectively.
(21f') and the same air inlet (21e) (2
1r) The inside of the valve seat forming cylinder (21) and the intake vibe connecting part (20b) are communicated with each other through the inside of the valve seat forming cylinder (21).
1) an air entrainment section (70) is formed in the interior. (I5)
indicates the air inflow direction.

In addition, a valve seat (21a) is provided coaxially with the valve seat forming cylinder (21) in the middle part of the valve seat forming cylinder (2″l) located immediately behind the air mixing part (70). A jet flow forming channel (27) is formed on the axis of the valve seat (21a), and the valve seat (21a)
21a) A right-angled corner (21'a) is formed at the inner peripheral edge of the rear end, and an inclined surface (22a) is formed at the outer peripheral edge of the tip at the same corner (21°a). The valve body (22) is brought into contact with and separated from the valve body (22) so that the opening/closing amount (adjusting the jet volume and jet pressure) of the jet flow forming flow path (27) can be adjusted by the jet volume adjusting valve body (22). .

In addition, the motor for opening and closing the nozzle valve body (monthly 1) has a cylindrical motor casing (23) attached to the rear wall forming plate (29).
The cylindrical coil (23a) is removably attached to the motor casing (23), and the cylindrical coil (23a) is attached to the nozzle casing (23).
A cylindrical loader shaft (23b) is mounted coaxially with the rotor nut (23b) via a bearing (23e), and is installed coaxially with the rotor nut (23b). Place a magnet (23c) on the outer circumferential surface of the coil (
The valve body support rod (23d) is inserted into the rotor nut (23b) coaxially with the nozzle casing (20).

Then, attach the valve body support rod (23d) to the rotor nut (
In conjunction with the forward and reverse rotation of 23b), the forward and backward movement is performed steplessly over a minute distance. (23g) is a rotation regulating piece that prevents the valve element support rod (23d) from becoming entangled with the rotor nut (23b).

Moreover, the tip of the valve body support rod (23d) is connected to a rod insertion hole (2) provided in the center of the rear wall forming plate (29), which will be described later.
9e) and extends into the nozzle casing (20), and a jetting amount adjusting valve body (22) is attached to the tip of the valve body support rod (23d).

Further, at the rear end of the valve body support rod (23d), there is provided a valve body (22 ) is installed with a nozzle valve body standard position detection sensor (231') that detects the opening/closing amount (adjusts the jetting amount and jetting pressure) of the nozzle valve body standard position detecting sensor (231').
r) is the bubble volume adjusting valve body 13J? Close operation motor (
2) Valve body reference position detection sensor for adjusting air bubble volume (
91).

With this configuration, the motor for opening and closing the valve body for the nozzle (
ML) energizes the coil (23a) and magnet (2
3b) and rotate the ball screw (23c),
The valve body support rod (23d) connected to the ball screw (23c) is moved forward and backward, and the jet amount adjusting valve body (22) is attached to the tip of the valve body support rod (23d).
is moved toward and away from the valve seat (21a) so that the jetting amount and jetting pressure can be adjusted.

Moreover, the opening/closing amount of the ejection amount regulating valve body (22) is as follows:
It is detected by the nozzle valve body reference position detection sensor (231'), and the detection result is sent to the control section (C).
C) controls the energization to the coil (23a) to properly open and close the valve body (22) for the jet fit yyJwI, thereby adjusting the amount of hot water spouted into the bathtub body (1) and spouting the hot water. The pressure can be adjusted.

In addition, the motor (Ml) for opening and closing the valve body for the nozzle is capable of finely adjusting the spout volume and jet pressure of bath water by moving the jet volume regulating valve disc (22) forward and backward steplessly over a minute distance. A piezoelectric actuator may also be used.

Further, a waterproof cover (40
) is installed. This waterproof cover (40) surrounds the tip of the valve body support rod (23d) and extends from the valve body support rod (23d).
23d) The motor for opening and closing the valve body (M
The mounting flange (30) provided on the periphery of the rear end is watertightly attached to the front surface of the rear wall forming plate (29) in the nozzle casing (20). Installed in condition.

The waterproof cover (40) is attached to the valve body support rod (23).
It is configured in a bellows shape so that it can expand and contract in the front and back direction in conjunction with the forward and backward movement of d).

Further, the above-mentioned valve body (22) for regulating the ejection amount, which is integrally formed with the waterproof cover (40), is molded from synthetic resin such as polytetrafluoroethylene or nylon 11 in this embodiment.

Further, (44) is a cover for preventing hair from getting caught in the bellows-shaped waterproof cover (40), and the cover (44) is used for installation. It can also be detachably attached to the flange (30) and removed when unnecessary. Also, (20m) is an air breathing port.

Further, the rear wall of the nozzle casing (20) described above is a rear wall forming plate (29) that is separate from the nozzle casing (20).
), and the rear wall forming plate (29) has a disc shape with approximately the same diameter as the rear end inner diameter of the nozzle casing (20), and is attached from the front end opening of the nozzle casing (20). It is fitted and installed in a removable manner.

Then, the rear wall forming plate (29) is attached to the nozzle casing (29).
0) Rear wall forming plate regulating piece (20g) formed on the inner peripheral surface of the rear end
) to restrict rearward sliding by abutting and locking the rear peripheral edge of the valve seat-forming cylindrical body (21), while the rear wall forward movement M1. Touch the front peripheral edge to the step part (21g).
It is locked to restrict forward sliding. (29a) is a packing provided on the peripheral surface of the rear wall forming plate (29).

Moreover, the outer diameter of the motor casing (23) described above is
It is formed to have a smaller diameter than the inner diameter of the rear end opening (20k) of the nozzle casing (20) formed by the inner peripheral surface of the rear wall forming plate (29).

With this configuration, the rear wall forming plate (29) can be attached to the nozzle casing (20) by removing the valve seat forming cylinder (21) that restricts forward sliding of the rear wall forming plate (29). It can be removed from the front end opening of the If
(29) The motor for opening and closing the valve body for the nozzle (
Ml) is the rear end opening (2) of the nozzle casing (20).
Because the diameter is smaller than the inner diameter of the rear wall forming plate (
29) can be removed integrally.

The nozzle valve opening/closing motor (Ml) can also be removed from the rear wall forming plate (29) outside the bathtub body (1) if necessary.

Further, the other jet nozzles (3) and (4) are constructed in the same manner as the jet nozzle (2), so that the jet amount and jet pressure of bath water can be finely adjusted.

Further, the jet nozzles (2), (3), and (4) can be adjusted by a remote controller (30) (see FIG. 1).

(f) Effect In the present invention, the air intake part includes an air bubble amount control valve, and the air bubble f:
! A motor is provided to open and close the valve element of the control valve to adjust the amount of air bubbles, so that the amount of air bubbles can be adjusted automatically. Even when a plurality of jet nozzles are each provided with an air intake part, each air intake part can be automatically adjusted, so that the amount of bubbles can be easily adjusted.

Furthermore, by using a minute distance stepless drive motor as the motor for opening and closing the valve body for controlling the amount of bubbles, it is possible to finely adjust the amount of opening and closing of the valve body of the bubble amount control valve, and the valve body can be moved periodically. It can also be opened and closed, allowing you to enjoy various forms of jet flow with different amounts of bubbles.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a bubble-generating bathtub equipped with an air intake section according to the present invention. FIG. 2 is a plan view of the bubble-generating bathtub. FIG. 3 is an explanatory diagram of the piping of the intake vibrator. FIG. 4 is an enlarged sectional view of the air intake section. FIG. 5 is a sectional view taken along the line ■-■ in FIG. 4. FIG. 6 is an enlarged sectional view of the motor for opening and closing the valve body for adjusting the amount of air bubbles. FIG. 7 is an enlarged sectional view of the motor for opening and closing the nozzle valve body. FIG. 8 is a rear view of the same jet nozzle. FIG. 9 is a sectional view taken along line I-1 in FIG. 7. FIG. 10 is a sectional view of a conventional air intake section. :Bubble generating bathtub:Circulation pump:Control unitBathtub body Foot side spout nozzleDorsal side spout nozzleVentral side spout nozzleAir intake sectionBath water suction vibe (11)Two bath water bullet feeding vibes

Claims (1)

[Claims] 1) A forced bath water flow path is connected in communication with a jet nozzle attached to the bathtub body, an air intake section is connected in communication with the forced bath water flow path, and the air intake section is used to communicate with the outside. In the bubble-generating bathtub, the air taken in from the air is mixed with the bathwater in the bathwater forced flow path, and the bathwater mixed with bubbles can be spouted from the jetting nozzle into the bathtub body. A bubble volume control valve that adjusts the amount of air bubbles in bath water by adjusting the amount of air supplied into the hot water forced flow path, and a valve body for controlling the bubble volume that opens and closes the valve body of the bubble volume control valve. An air intake structure for a bubble generating bathtub that is equipped with an operating motor to automatically vary the amount of bubbles.