JP2861181B2 - Jet nozzle structure in a bubble generating bath - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial application field The present invention relates to an ejection nozzle capable of freely adjusting the ejection amount of hot water to a bathtub body in a bubble generation bathtub.

(B) Conventional technology Conventionally, as one form of a jet nozzle used for a bubble generating bath, the present applicant has previously filed Japanese Patent Application No. 63-331772 (Japanese Patent Application Laid-Open No. 2-24314).
No. 6).

Such an ejection nozzle is an automatic ejection amount variable nozzle, and substantially has a nozzle casing 101 having a front end connected to an opening portion opened to the side wall 100 of the bathtub body in a watertight state, and a front end swinging inside the nozzle casing 101. Throat 1 freely arranged
02 and the middle part of the nozzle casing 101, and the valve seat 1
03, a valve seat forming cylinder 104 having a valve seat 103 and a throat
An air mixing space 106 interposed between the nozzle casings 102 and communicating with the air intake portion 105; a bath water inflow space 107 provided at the rear of the nozzle casing 101 and communicating with the air inflow space through a valve seat 103; It comprises a valve element 108 disposed in the inflow space 107 so as to be able to contact and separate from the valve seat 103, and a nozzle valve element opening / closing operation motor 109 for moving the valve element 108 forward and backward.

The nozzle valve opening / closing operation motor 109 is connected to a power supply and a control device via codes 110 such as a power supply code and a control code.

Then, by driving the nozzle valve body opening / closing operation motor 109 based on the drive output from the control device, it is possible to accurately and surely adjust the amount of hot water mixed with bubbles ejected from the ejection nozzle.

In addition, such an ejection nozzle can freely change the ejection amount and ejection pressure of the ejection bath water ejected from the ejection nozzle in cooperation with a circulation pump whose rotation speed is controlled by an inverter or the like, It is possible to obtain various types of blow operation in which the ejection amount and the ejection pressure are different from each other. In FIG. 14, reference numeral 111 denotes a packing such as an O-ring provided to prevent leakage of electric current to the bathtub main body due to communication between the bath water inflow space and the nozzle valve opening / closing operation motor 109, and 112 denotes a motor protection cover. It is.

(C) Problems to be solved by the invention However, such jet nozzles still have the following problems to be solved.

That is, since the bathtub main body is mounted in close contact with the bathroom wall, the motor for opening and closing the nozzle valve of the ejection nozzle is operated.
109 is configured to be removable from the front part of the nozzle casing 101, that is, from the bathtub body side, in order to facilitate repair and inspection work.

On the other hand, in order to surely prevent an electric leakage accident from the ejection nozzle into the bathtub main body, the ejection nozzle has a water-tight structure inside a nozzle casing 101 including a motor 109 for opening and closing the nozzle valve element.

Therefore, during the repair / inspection work, when pulling out the nozzle valve body opening / closing operation motor 109 from the nozzle casing 101, a negative pressure is generated in the rear space of the nozzle casing 101,
Since the negative pressure increases in inverse proportion to the motor pulling power, the motor 1
09 could not be easily removed.

An object of the present invention is to provide a jet nozzle in a bubble generating bath that can solve the above problems.

(D) Means for Solving the Problems The present invention relates to a bath water circulation comprising a bath hot water suction passage and a bath hot water supply passage between a bathtub main body and a circulation pump installed outside the bathtub main body. A flow path is provided, and the end of the bath water circulation flow path is opened into the bathtub body to form a jet nozzle, and an air intake section is connected to the strong bath flow path and the air bubbles are generated from the jet nozzle. In a bubble generating bathtub capable of jetting mixed bath water into the bathtub main body, the jetting nozzle is constituted by a jetting amount automatic variable nozzle equipped with a nozzle valve opening / closing operation motor,
In addition, a power supply cord and a control cord for the motor are arranged in a single cord protection cable to form a multi-core cable structure, and furthermore, an air conduit is provided for the multi-core cable. The present invention relates to a jet nozzle structure in a bubble generation bath.

The present invention is also characterized in that the air conducting tube is provided at the center of the multi-core cable.

(E) Function / Effect According to the present invention, the following function / effect is produced.

The power supply cord and control cord for the jet nozzle are arranged in a single cord protection cable to form a multi-core cable structure, and the multi-core cable is provided with an air conduit, so it is connected via the air conduit. In addition, the rear space such as the motor housing space in the nozzle casing can be always in communication with the atmosphere.

Therefore, even when the inside of the nozzle casing is kept in a watertight state, when the nozzle valve opening / closing operation motor is removed from the nozzle casing, air flows from the outside into the rear space of the nozzle casing through the air passage. It is possible to reliably prevent negative pressure from being generated in the rear space of the nozzle casing, easily remove the nozzle valve opening / closing operation motor from the nozzle casing, and eject the nozzle including the nozzle valve opening / closing operation motor. The repair and inspection work of the internal structure can be easily and reliably performed.

Further, in the present invention, since the air conduit is disposed at the center of the multi-core cable, the air conduit may be blocked even if the cord protection cable having the multi-core cable structure is bent. There is no.

Further, since the water tightness of the nozzle casing is sufficiently ensured, the safety of the bather can also be ensured.

(F) Example Hereinafter, based on an example shown in the accompanying drawings, the configuration of the jet nozzle for a bubble generating bath according to the present invention will be specifically described.

[Overall Configuration of Bubble Generation Bathtub] First, the overall configuration of the bubble generation bathtub provided with the ejection nozzle according to the present invention will be described.

In FIGS. 1 to 3, A is an air bubble generation bath,
The bubble-generating bathtub A is provided on the front and rear walls and the left and right side walls of the bathtub body 1 formed in a box shape having an upper surface opening, and the foot-side, back-side, and ventral-side jet nozzles 2, 2, 3, 3, and 3, respectively, which have automatically variable jetting amounts. There are a total of four and four.

The tub body 1 has a flange-shaped edge with a fixed width around the periphery.
1a, an air intake portion 5 is provided at the edge 1a, and vertically elongated recesses 1b, 1b having a substantially V-shaped cross section are formed at substantially central portions of the left and right side walls, and rear walls of the recesses 1b, 1b ( The ventral ejection nozzles 4, 4 are attached to the inclined surface facing the rear side) toward the center of the rear wall.

Moreover, the ventral ejection nozzles 4, 4 are provided at a higher position than the other foot / dorsal ejection nozzles 2, 2, 3, 3, so that the ventral and chest sides,
The bath water can be reliably applied to other parts of the human body.

Further, a function unit 9 is disposed outside the bubble generation bath A. Inside the function unit 9, a circulation pump P for circulating bath water and a circulation pump P are circulated. A filtering device 43 for filtering the bath water, a pump driving motor M for driving the pump P, a motor M ₁ for opening and closing the valve M for opening and closing the nozzle M, and a motor M for opening and closing the bubble for adjusting the amount of bubbles. ₂ and a control unit C for controlling the driving of the electric three-way valve 45.

Further, between the circulating pump P and the bubble generating bathtub A, a bathwater circulating flow path D penetrating the bathtub chamber wall W is interposed.

That is, as shown in FIG. 1 and FIG. 3, the bath water circulation flow path D includes a bath water suction pipe 10 for sending bath water from the bubble generation bath tank A to the circulation pump P, and the circulation pump P, It is composed of a hot water bath pipe 11 for sending hot water to the bathtub A.

One end of the bath water suction pipe 10 is connected to the suction port 1m opened at the lower part of the bathtub body 1, and the other end is connected to the water suction port of the circulation pump P to suck the bath water into the circulation pump P. On the other hand, the bath hot water feeding pie 11 has one end connected to the water discharge port of the circulation pump P, and the other end connected to the jet nozzles 2, 2, 3, 3, 4, 4 respectively.

In addition, the above-described suction port 1m is connected to the foot side / back side ejection nozzle 2,
It is provided at a lower position than 2,3,3.

As shown in FIG. 4, an inverter E is interposed between the pump driving motor M for driving the circulation pump P and the control unit C, and the output frequency of the inverter E is changed to change the circulation pump. By controlling the number of rotations of P, the discharge amount of the circulation pump P can be changed smoothly and reliably.

Further, a pressure detection sensor 48 is attached to a middle part of the bath water suction pipe 10 (which can be a suction side in the circulation pump P) as shown in FIG. In addition to detecting the amount, that is, the water level, the pressure of the bath water sucked into the circulation pump P through the bathtub suction pipe 10 can be detected.

The control unit C controls the start and stop of the blow operation, the antifreeze operation, the filter washing operation, and the automatic filter washing operation based on the water level measured by the output from the pressure detection sensor 48. I have.

The details of these operations are the same as those described in Japanese Patent Application No. 1-73367 filed earlier by the present applicant.

Further, as shown in FIG. 4, a bath water temperature detection sensor T for detecting the temperature of the bath water pressure-fed in the pipe 11 is attached to the middle part of the bath water strong feeding pipe 11, and Is sent to the control unit C, and the blow operation, the anti-freezing operation,
The filter washing operation and the automatic filter washing operation are controlled.

If the hot water supply does not satisfy the designated water temperature by using the bath temperature detection sensor T, the blow operation, the antifreezing operation, the filter washing operation, and the automatic filter washing operation by the control unit C are not started. Like that.

In addition, the above-described air intake section 5 and each of the ejection nozzles 2, 2, 3, 3,
As shown in FIGS. 1 and 5, intake pipes 12a, 12b, and 12c are interposed between the intake pipes 4 and 4.
The tips of 2b and 12c are communicated with the jet nozzles 2, 2, 3, 3, 4, and 4, respectively, and are frozen.

Then, by utilizing the negative pressure generated when each of the jet nozzles 2, 2, 3, 3, 4, 4 blows out the bath water, an air inlet 6a provided in an operation panel 6 and a lower portion of the operation panel 6, which will be described later. The air taken in through the continuously provided air inlet 5 is passed through the intake pipe 12.
a, 12b, 12c, into each of the jet nozzles 2, 2, 3, 3, 4, 4 and 4, and from each of the jet nozzles 2, 2, 3, 3, 4, 4 into the bath tub body 1 Hot water can be spouted out.

As shown in FIGS. 1 and 3, an operation pipe section 6 is provided near the bathtub body 1, and the operation pipe section 6 can be used to operate the bubble generation bathtub A. I can do it.

Incidentally, entrained air amount is performed by the operation of the bubble amount adjusting valve body opening and closing motor M _2.

In FIG. 1, reference numeral 30b denotes an infrared ray receiving sensor provided in the operation pipe section 6, which receives infrared rays transmitted from the remote controller 30. Reference numeral 30c denotes a reception indicator lamp provided on the operation pipe section 6, and reference numeral 30 'denotes a wall holder of the remote controller 30.

[Configuration of Jet Nozzle] Next, the configuration of the jet nozzles 2, 2, 3, 3, 4, and 4 that constitute the gist of the present invention will be described in detail with reference to the accompanying drawings, particularly, FIG. 5 to FIG. explain.

The foot, back, and ventral spout nozzles 2, 2, 3, 3, 4, and 4 have the same configuration and automatic variable spout nozzles that can automatically change the spout amount and spout pressure of the bath water. In the following, based on FIG. 5 to FIG.
Will be described.

(Overall Configuration of Spouting Nozzle) As shown in FIG. 6, the foot-side spouting nozzle 2 is substantially a cylindrical nozzle casing attached to the foot-side spouting nozzle connection port 1g of the bathtub body 1 in a cantilevered state. In 20, a jet forming part 50 for forming a bath flowing into the jet from the strong bath pipe 11 into a jet, and a mixing effect due to the ejector effect and the turbulence are applied to the bath in the jet state from the jet forming part 50. An air intake section 70 for mixing air, a throat section 59 for determining a jetting direction of a bubble-containing bath water jetted from the air intake section 70 toward the inside of the bathtub body 1, and a part of the jet forming section 50. a nozzle valve element opening and closing motor M ₁ for advancing and retracting the ejection amount adjustment valve body 22 forming, electrically insulating and protective means and structures, nozzle valve opening and closing operation of the bathtub body 1, such as water leakage sensor 23v the power supply to be connected to use motor M _1, etc. -
It is configured by arranging an electrical connection structure for control.

Further, in order to facilitate the inspection and repair of the jet nozzle 2 according to the present embodiment, the throat portion 59, the air mixing portion 70, and the jet forming portion 50 are provided from the nozzle casing 20 described above.
When, having a nozzle valve element opening and closing motor M _1, and an electrical connection structure, integrally, characterized in that it has a take-out possible configuration the bath main body side.

Hereinafter, the ejection nozzle 2 having the above basic configuration will be described for each component with reference to FIG. 6 to FIG.

(Nozzle Casing) As shown in FIG. 6, the nozzle casing 20 is formed of a long tubular body arranged in a horizontal state, and has a female screw portion 20a on an inner surface and a flange portion 20b on an end portion. A tub mounting portion 20c provided with a tub, and an intake pipe connecting portion 2 connected to the back of the tub mounting portion 20c and provided with an air inflow cylindrical portion 20d on the outer peripheral surface.
0e (see FIG. 8), a hot-water supply pipe connecting portion 20g (see FIG. 7), which is connected to the rear of the intake pipe connecting portion 20e and has a hot-water inflow cylinder portion 20f on the outer peripheral surface. formed in part comprises a motor or the like attachment portion 20h for attaching the nozzle valve element opening and closing motor M ₁ for advancing and retracting the ejection amount adjustment valve body 22 to be described later.

Bathtub body 1 of nozzle casing 20 having such a configuration
The mounting structure to the device will be described.

In FIG. 6, reference numeral 1h denotes a ring-shaped packing fitted to the periphery of the foot-side ejection nozzle connection port 1g.

Reference numeral 1i denotes a nozzle mounting cylinder that extends from the inside to the outside of the bathtub body 1 through the jet nozzle connection port 1g to which the above-mentioned ring-shaped packing 1h is attached, and the nozzle mounting cylinder 1i is a bathtub. An inner diameter end is provided with a flange portion 1j, and an outer peripheral surface of an outer end of the bathtub is provided with a male screw portion 1k.

Then, in the nozzle mounting cylinder 1i, one end face of the enlarged diameter flange portion 1j is pressed against the inner surface of the ring-shaped packing 1h, and the male screw portion 1k is provided on the inner surface of the bathtub mounting portion 20c of the nozzle casing 20. It is screwed into the female screw portion 20a in a tightened state.

By such screwing, the bathtub mounting portion 20c of the nozzle casing 20 can be firmly and watertightly mounted on the lower part of the front wall of the bathtub body 1.

Further, the bathtub mounting portion 20c is substantially hidden by a decorative cover 26 described below.

That is, the decorative cover 26 has a bathtub-side flange portion having a size capable of concealing the enlarged-diameter flange portion 1j of the nozzle mounting cylinder 1i.
26a and a cylindrical portion 26b penetrating the ejection nozzle connection port 1g, and a male screw portion 26c is formed on the outer peripheral surface of the cylindrical portion 26b.

The male screw portion 26c is detachably screwed to a female screw portion 201 formed on the inner peripheral surface of the front end of the nozzle casing 20.

Further, a throat fixing member 25 described later can be fixed in the nozzle mounting cylinder 1i by the rear end of the decorative cover 26.

Next, the configuration of the intake pipe connecting portion 20e provided behind the bathtub mounting portion 20c of the nozzle casing 20 will be described.

As shown in FIG. 6 and FIG.
The air inflow cylindrical portion 20d protruding from the outer peripheral surface of the air pipe 12 has a female screw portion 20i provided on the inner surface thereof, and one end of the intake pipe 12a can be screwed and connected. 20s indicates an auxiliary air inflow cylinder.

Further, as shown in FIG. 6 and FIG. 8, the intake pipe connecting portion 20e has an air inlet 20j formed in the inside thereof, and through the same air inlet 20j, the air is discharged by the ejector effect and turbulence. Utilizing the mixing effect, it can be mixed into the jet bath water flowing in the air mixing space 21d formed in the front portion 21g of the valve seat forming cylinder 21 described later.

In FIGS. 6 and 7, reference numeral 20g denotes a connecting portion of the hot water supply pipe, and the connecting portion 20g of the connecting portion of the hot water bath.
At 0f, one end of a hot-water bath 11 is connected in a watertight manner and detachably, and a hot-water inlet is provided inside.
20k is formed.

With this configuration, the hot water from the hot water supply pipe 11 flows into the hot water inflow space 20p formed at the rear of the valve seat forming tubular body 21 through the hot water inflow port 20k.

 In addition, in the figure, the arrow n shows the inflow direction of bath water.

Next, the valve driving device mounting portion 20h provided at the rearmost portion of the nozzle casing 20 will be described.
As shown in the figure, the rear end is provided with an enlarged diameter extending portion 20m, and further, the enlarged diameter extending portion 20m cooperates with a lid 20n connected to the rear end in a watertight state, and inside thereof, forming a motor accommodating space 20q for accommodating the nozzle valve element opening and closing motor M ₁ to be described later in a closed state.

(Throat Section) Next, a specific configuration of the throat section 59 will be described with reference to FIG.

The throat portion 59 is substantially disposed inside the front portion of the nozzle casing 20, and has a throat 24 having an ejection flow path formed therein, and a throat fixing member 25 that supports the throat 24 so as to be able to swing freely. And a throat concave support surface 21a formed at a front portion 21g of the valve seat forming cylinder 21 disposed in the center of the nozzle casing 20.

The throat 24 has an outer peripheral surface formed by a valve seat forming cylinder.
A spherical throat base 24a supported in the throat concave support surface 21a so as to be swingable in the vertical and horizontal directions, and a cylindrical throat tip 24b having an outer diameter reduced from the throat base 24a.
The throat tip 24b can be manually swung up, down, left, and right in any direction about the base 24a.

Moreover, the outer peripheral surface of the throat base 24a and the valve seat forming cylinder 2
Since a certain sliding resistance is given in advance to the throat concave support surface 21a, the throat 24 can be held at any swing angle position.

Further, the throat fixing member 25 is held at a predetermined position on the inner peripheral surface of the front part of the nozzle casing 20 via the rear end of the decorative cover 26 and the fixing ring 28.

(Aeration section) Next, the configuration of the aeration section 70 will be specifically described with reference to Figs. 6 and 8.

As described above, the intake pipe connecting portion 20e of the nozzle casing 20 has an air inlet 20j formed therein as shown in FIGS.

On the other hand, as shown in FIG. 8, a plurality of inner air inlets 21c are provided in the central reduced diameter portion 21b of the valve seat forming cylinder 21 disposed at a position corresponding to the intake connection portion 20e. .

An annular air communication path 21e is formed between the nozzle casing 20 and the valve-seat-forming cylinder 21.

With this configuration, air is passed through the air inlet 20j provided in the nozzle casing 20, the annular air communication path 21e, and the inner air inlet 21c provided in the valve seat forming cylinder 21.
Utilizing the ejector effect and the mixing effect due to the turbulence, it is possible to uniformly and effectively mix the water from the entire circumference into the jet bath water flowing in the air mixing space 21d formed in the valve seat forming cylinder 21.

 Note that m indicates the air inflow direction.

(Jet Formation Unit) Next, the configuration of the jet formation unit 50 will be specifically described with reference to FIGS. 6 and 7. FIG.

As is apparent from FIG. 6, the jet forming part 50 is substantially formed by the valve seat forming cylinder 21 disposed in the nozzle casing 20.
A jet forming channel 27 provided at the center of the rear wall 21j, a valve seat 21f formed in the jet forming channel 27, and an opening / closing amount (a jet amount and Adjust the blast pressure)
And a valve seat 22f for adjusting the ejection amount.
And a front surface of a motor mounting block 29 which is supported so as to be able to move forward and backward.

First, the configuration of the ejection amount adjusting valve body 22 will be described. As shown in FIG.
Forward and backward toward the valve seat 21f formed in the
It is for forming a jet bath in the inside, and by moving forward and backward, it is possible to form the jet bath and also adjust the ejection amount of the jet bath containing the bubbles ejected from the throat 24 of the ejection nozzle 2. You can do it.

Such ejection amount adjusting valve body 22 is rigidly connected via the insert metal fitting 22a at the tip of the valve body support rod 23d of the nozzle valve element opening and closing motor M ₁ to be described later.

Further, the valve body 22 has a conical portion 22b that expands while gradually reducing its diameter toward the valve seat 21f on the distal end side. With such a conical portion 22b, a linear rod-shaped bathwater jet can be generated in the jet forming channel 27, and the ratio of the jet pressure to the jet volume is relatively high, and spot blowing having a finger pressure effect can be achieved. Can be easily obtained.

Next, the watertight structure provided around the ejection amount adjusting valve body 22 will be described. The tip of a bellows-shaped waterproof cover 22c is integrally connected to the rear portion of the ejection amount adjusting valve body 22. The base end of the cover 22c is mounted on the front surface of the motor mounting block 29 via an O-ring 22d.

Further, a cylindrical waterproof cover 22e is provided concentrically around the ejection amount adjusting valve element 22, and the waterproof cover 22e is
The base end thereof is attached to the motor attachment block 29, and the inner peripheral surface of the annular projection 22f provided at the tip thereof slidably supports the ejection amount adjusting valve body 22.

As shown in FIG. 6, an O-ring 21h is provided between the inner peripheral surface of the nozzle casing 20 and the outer peripheral surface of the rear wall 21i of the valve seat forming cylinder 21.

Due to the presence of the O-ring 21h, the bath water inflow space 20p
Therefore, the bath water enters the air communication passage 21e through a gap between the inner peripheral surface of the nozzle casing 20 and the outer peripheral surface of the rear wall 21i of the valve seat forming cylinder 21, and the bath water enters the air communication passage 21e and the air inlet. 20j
A water film is formed on the boundary surface between the air and the air, so that it is possible to reliably prevent the air from flowing into the aeration space 21d.

(Motor valve element opening and closing nozzle) Next, a description will be given of the configuration of the nozzle valve element opening and closing motor M _1, a cylindrical motor casing 23 that forms an outer shell of the motor M ₁ is Figure 6 As shown in FIG. 9, it is detachably attached to the rear surface of the motor attachment block 29.

In the motor casing 23, a cylindrical coil 23a is provided concentrically with the nozzle casing 20, and a cylindrical magnet 23b is provided in the coil 23a.
The magnet 23b can be rotated forward and backward by exciting the magnet 23a.

Further, a cylindrical rotor nut 23c is concentrically and integrally mounted in the magnet 23b, and the rotor nut 23c is rotatably mounted on a shaft by a bearing 23e.
In 3c, a valve body support rod 23d having an ejection amount adjusting valve body 22 attached to the tip is inserted and supported so as to be able to slide forward and backward.

Then, a spiral rotor nut-side ball groove 23k is formed on the inner peripheral surface of the rotor nut 23c, while the valve body support rod 2
On the outer peripheral surface of 3d, a spiral rod-side ball groove 23m is formed in the same direction as the rotor nut-side ball groove 23k, and a plurality of balls 23n are provided between the opposing rotor nut-side ball groove 23k and the rod-side ball groove 23m. It is interposed so that it can roll freely.

Further, 23g is a rotation restricting piece that restricts the rotation of the valve body support rod 23d in order to convert the rotational movement of the rotor nut 23c into a linear movement of the valve body support rod 23d.

In the present embodiment, the rotation restricting piece 23g is formed by a ball fitted and held by a screw 23y in a pair of groove 23x provided at a position facing 180 ° on the rear outer peripheral surface of the valve body support rod 23d. Is formed.

With this configuration, based on the drive output from the control unit C, and energized nozzle valve element opening and closing motor M _1, as shown in FIG. 6, Rotanatto 2 with magnet 23b
3c is rotated, and in conjunction with the rotation of the rotor nut 23c, the valve element supporting rod 2 whose rotation is restricted by the rotation restricting piece 23g.
3d moves forward and backward, and the ejection amount adjusting valve body 22 attached to the tip of the valve body support rod 23d is brought into contact with and separated from the valve seat 21f, and the bathtub body 1 is moved.
It is possible to adjust the amount and pressure of the hot water jetted into the bath.

In the operation of the ejection nozzle 2, the opening / closing amount of the jet forming passage 27 corresponds to the amount of advance / retreat of the valve body support rod 23d, and the amount of advance / retreat of the rod 23d is determined by the valve body reference position (for example, the valve body 22). the maximum advanced position of proportion to the number of applications of the voltage pulses to the nozzle valve element opening and closing motor M ₁ from the fully closed position).

Thus, by controlling the drive pulse of the nozzle valve element opening and closing motor M ₁ by the control station C, a closing of the flow forming channel 27, i.e. the bath water ejection amount from the ejection nozzle 2 accurately and finely Adjustment can be performed, and fine adjustment of the amount and pressure of the hot water jetted into the bathtub body 1 can be performed.

As the nozzle valve element opening and closing motor M _1, and the ejection amount adjustment valve body 22 is forward and backward actuating a minute distance stepless
Anything can be used as long as the amount and pressure of the bath water can be finely adjusted, and a piezoelectric actuator, an ultrasonic motor, or the like can also be used.

Further, the rear end of the valve body support rod 23d, the nozzle valve element opening and closing motor M ₁ is operated normally, is provided a valve driving detection sensor S ₁ for detecting whether dolphin .

Then, the sensor S ₁ is due to the ON operation of the operation start switch, the initial driving of the nozzle valve element opening and closing motor M _1, the valve body support rod 23d is the reference position (e.g., the maximum expansion of the valve element support rod 23d position, i.e., fully from the closed position) when retracted a predetermined distance rearwardly out of the sensor output, the control unit C by the sensor output can confirm the normal operation of the nozzle valve element opening and closing motor M ₁ After that, the blow operation control including the valve body opening / closing control can be started.

On the other hand, if the valve drive detection sensor S ₁ which also turns on the operation start switch described above can not issue an ON output, the control unit C
Determines that abnormality occurs in the nozzle valve element opening and closing motor M _1, and disables subsequent various operations.

Although it is possible to use various sensors as such valve drive detection sensor S _1, in the present embodiment, the motor casing
A hall element 23i attached via a bracket 23z to an inner surface of a lid plate / substrate 23q forming a rear wall of the hall element 23;
23i and a magnet piece 23j attached to the rear end position of the opposing valve element support rod 23d.

(Means and Structure for Measures of Electrical Insulation to Bathtub Body such as Water Leakage Sensor) Further, in the present embodiment, as an electrical insulation measure for reliably preventing leakage from the jet nozzle 2 to the bathtub body 1, The following means or structures are adopted.

First, FIG. 6, as shown in FIGS. 7 and FIG. 10, the lid also serves substrate 23q provided at the rear of the motor casing 23 a nozzle valve element opening and closing motor M ₁ is leakage water on its outer surface sensor 23v is installed.

Thus, event, even if water enters the motor housing space 20q which accommodates the nozzle valve element opening and closing motor M _1, that the detected water leakage sensor 23v immediately stops the blow operation, In addition, all the ejection nozzles 2, 2, 3, 3, 4, and 4 can be stopped, and the operation panel unit 6 side nozzle abnormality signal can be output.

The motor casing 23 of the nozzle valve element opening and closing motor M _1, as shown in FIGS. 10 and 11, the ABS
A current collecting film 80 made of chromium plating is formed on the front and back surfaces of the resin material, that is, on both surfaces. The current collecting film 80 is connected to the ground terminal 81 of the ground cord h connected to the lid / substrate 23q. ing.

With this configuration, even if there is water in the motor housing space 20q, the motor can be connected to the earth cord h of another ejection nozzle through the earth cord h and grounded.
Electric leakage from the jet nozzle 2 to the bathtub main body 1 can be reliably prevented.

As shown in FIG. 6, a pair of O-rings 29a and 29b are provided between the outer peripheral surface of the motor mounting block 29 and the inner peripheral surface of the nozzle casing 20 with an interval in the axial direction. I have.

The O-rings 29a and 29b can reliably prevent the bath water from the bath water inflow space 20p from entering the motor storage space 20q.

Further, in the configuration of the jet nozzle 2 shown in FIG. 6, except for the decorative cover 26, the nozzle mounting cylinder 1i and nozzle valve element opening and closing motor M ₁ for attaching the same decorative cover 26, all other The components of the jet nozzle 2, that is, the nozzle casing 20, the valve seat forming cylinder 21, the motor mounting block 29, and the like are formed of a nonmetallic material, preferably a synthetic resin having high insulation properties.

Therefore, from this aspect, the motor for opening and closing the valve
Leakage accident from M ₁ to the bathtub body 1 can be reliably prevented.

In the present embodiment, the throat 24, the decorative cover 26, and the like are made of metal with emphasis on the sense of mass possessed by metal.

Further, as shown in FIG.
The other end of the cord protection cable 23s provided with 1 is connected to a control unit C and a power supply in the functional unit 9 whose humidity is kept low by a built-in motor cooling fan.

Therefore, the humidity inside the functional unit 9 is kept low by the built-in motor cooling fan,
The humidity in the motor storage space 20q is also kept low through 23s-1, and the electrical insulation of the jet nozzle 2 can be improved from this surface.

(Electrical connection structure for the feed and control of the nozzle valve element opening and closing motor and the like) as shown in FIG. 6 and FIG. 9, power supply and control of the nozzle valve element opening and closing motor M ₁ Is electrically connected by an edge connector 23p, a lid / substrate 23q, a foldable flat cable 23r folded in multiple layers, and a multi-core cord protection cable 23s.

As shown in FIG. 9, the edge connector 23p includes a socket 23t connected to the lid / substrate 23q and a socket 23t.
is composed from the plug 23u and being inserted freely pull the t, one end of the plug 23u is connected to the coil 23a of the nozzle valve element opening and closing motor M _1.

Also, as shown in FIGS. 9 and 10, the lid plate / substrate
23q has a power cord and a control cord, a total of 9 cords
a, b, c, d, e, f, g, h, and i are connected.

And among these codes, four power supply cords a, b, c,
d is the drive circuit, three control codes e, f, g is for valve drive detection sensor S _1, 1 pieces of the ground cord h 80 current collecting film, first control code i of this is This is for the water leak sensor 23v.

Further, as shown in FIGS. 6 and 13, the foldable flat cable 23r folded in multiple layers is composed of the nine cords a, b, c, d, e, f, g, h, i the is obtained by bonding the flat strip, as described below, to extend the accordion when retrieving nozzle valve element opening and closing motor M ₁ from the nozzle casing 20, intended to facilitate the motor extraction It is.

Further, the flat cable 23r has a polyester film 23r-1 adhered to at least one side surface thereof, so that it is possible to reliably prevent the flat cable 23r from being twisted during expansion and contraction.

Incidentally, the electrical connection structure for the feed and control of the above-mentioned nozzle valve element opening and closing motor M ₁ and the like, similar to the nozzle valve element opening and closing motor M _1, is formed in the rear of the nozzle casing 20 It will be stored in a watertight state in the motor storage space 20q.

Next, the configuration of the cord protection cable 23s having a multi-core structure will be described.

As shown in FIGS. 6 and 12, the cord protection cable 23s to the jet nozzle 2 has the above-mentioned nine power supply / control cords a, b, c, d, e, f, g inside. They are arranged radially or annularly.

An air conduit 23s-1 is provided at the center of the cord protection cable 23s. Preferably, the air conducting tube 23s-1 is formed of a polybutene tube.

One end of the cord protection cable 23s is connected to a control unit C disposed in the function unit 9 and a power supply.

Therefore, the motor housing space 20q and the space in the functional unit 9 are communicated with each other by the air conducting pipe 23s-1, and as described later, the nozzle casing 23
The nozzle valve element opening and closing motor M ₁ and the like can be easily taken out from. Moreover, since the air conducting tube 23s-1 is provided at the center of the cord protection cable 23s, the air conducting tube 23s-1 does not become blocked even if the cord protection cable 23s is bent, so that the motor can be stored. Communication between the space 20q and the space in the functional unit 9 is not hindered.

Furthermore, the cord protection cable 23s is surrounded on its outer peripheral surface by a stainless protection spring 23s-2, and the spring 23s-2 can prevent the cord protection cable 23s from being damaged by a mouse or the like. .

(Integrally removing structure of components in the nozzle casing from the bathtub body side) In this embodiment, inspection and repair of the ejection nozzle 2 are further performed.
Particularly for ease of inspection and repair of the nozzle valve element opening and closing motor M _1, a nozzle casing 20, the throat portion 59
When an aeration unit 70, and the flow forming passage 50, the nozzle valve element opening and closing motor M _1, and an electrical connection structure, integrally,
It is configured to be removable from the bathtub body 1 side.

That is, as is apparent from FIG. 6, the nozzle casing 20, the inner diameter D ₁ is divided into four steps toward the bathtub body 1 side to the nozzle valve element opening and closing motor M ₁ side, D _2, D ₃ , D ₄ , D ₅
Is gradually reduced.

Then, the minimum outer diameter formed by attaching a nozzle valve element opening and closing motor M ₁ to the point of the fourth inner diameter D ₄ motor mounting block
29 as well as installed, the rear wall 21i and the installation of the third inner diameter D ₃ intermediate outer diameter at a location of the valve seat forming the cylindrical body 21, further, second
Front 21g maximum outer diameter valve seat formed accommodating cylinder 21 to the point of the inner diameter D ₂
And a throat fixing member 25.

Therefore, first, the decorative cover 26 is easily rotated in the loosening direction using a wrench or the like, so that the nozzle mounting cylinder 1i can be easily formed.
After removing the throat 24 from the nozzle casing 20, the throat 24 can be pulled into the bathtub body 1 together with the fixing ring 28 and the throat fixing member 25.

Thereafter, as shown in FIG. 6a, a finger is inserted into the inner air inlet 21c of the valve seat forming cylinder 21, and the same cylinder 21, the ejection amount adjusting valve 22, the motor mounting block 29, and the nozzle valve are provided. the body opening and closing motor M ₁ can be removed from the integrally nozzle casing 20.

In the above configuration, the motor housing space 20q located behind the nozzle casing 20 is kept watertight, so that the motor for opening and closing the nozzle valve
Removal of the bathtub body 1 side of the motor mounting unit block 29 fitted with M ₁ is difficult because negative pressure is generated in the motor housing space 20q.

However, in the present embodiment, as described above, it is left holding the inside motor housing space 20q watertight state, taking the valve element forward and backward motor M ₁ from the nozzle casing 20 into the bathtub body 1, function The low-humidity dry air in the unit unit 9 passes through the air conducting pipe 23s-1 provided in the cord protection cable 23s through the motor housing space 2 of the nozzle casing 20.
Since entering the 0q, the occurrence of negative pressure in the same space 20q can be reliably prevented, the nozzle valve element opening and closing motor M ₁ from the nozzle casing 20 may be easily removed.

Similarly, since the nozzle valve element opening and closing motor M ₁ is connected to the protection cables 23s via the flat cable 23r which folded multiplexing, the flat cable 23r
The by stretching the accordion, the removal and mounting of the nozzle casing 20 of the nozzle valve element opening and closing motor M ₁ can be easily performed.

Thereafter, the nozzle valve element opening and closing motor M ₁ and the like decompose to inspect and repair.

Thus, it is possible to perform the inspection and repair work of the nozzle valve element opening and closing motor M ₁ easily and reliably.

After the inspection and repair work is completed, the ejection nozzle 2 can be easily assembled by performing a procedure reverse to the procedure described above.

On the other hand, since the water tightness of the nozzle casing 20 is sufficiently ensured, the safety of a bather in the bathtub body 1 can be sufficiently ensured.

In the above, the jet nozzles 2, 2 on the foot side have been described. Repair and inspection of the ejection nozzles 2, 2, 3, 3, 4, 4 can be performed easily and reliably while maintaining the performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire structure of a bubble generating bath having an automatic ejection amount variable nozzle according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is piping and cords between the ejection nozzle and the functional unit. FIG. 4 is a side view showing a connection state by a protection cable, FIG. 4 is a block diagram showing a conceptual configuration of a bubble generation bath, FIG.
Fig. 6 is an enlarged sectional view of the ejection nozzle, Fig. 6a is an explanatory view of a removing operation inside the ejection nozzle, Fig. 7 is a side view of the same, Fig. 6 is FIG.
9 is an enlarged cross-sectional view of the motor for opening and closing the valve body for the nozzle, FIG. 10 is a front view of the motor casing, FIG. 11 is a cross-sectional view according to FIG. FIG. 12 is a cross-sectional view of a cord protection cable, FIG. 13 is a cross-sectional view of a flat cable, and FIG. 14 is a cross-sectional view of a jet nozzle according to the prior art. In the figure, A: air bubble generating bathtub M _1: nozzle valve element opening and closing motor P: circulation pump 1: Tub body 2,2,3,3,4,4: ejection nozzle 9: functional section unit 10: bathwater Suction flow path 11: Bath hot water flow path 20: Nozzle casing 20q: Motor storage space 23s: Cord protection cable

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Obata 5-1-1, Kushiamihigashi, Kokuraminami-ku, Kitakyushu-shi, Fukuoka Tokoki Co., Ltd. Kokura 2nd Plant (72) Inventor Koichi Uchiyama Kitakyushu, Fukuoka 5-1-1, Kamiami-Higashi, Kokura-Minami-ku Toko Equipment Co., Ltd., Kokura 2nd Factory (72) Inventor Mitsuaki Hashida 2-7-1, Motomura, Chigasaki-shi, Kanagawa Prefecture Toko Equipment Co., Ltd., Chigasaki Factory (72) Inventor Akira Hyodo 2-7-1, Motomura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kiki Co., Ltd. Chigasaki Plant (56) References JP-A-3-221046 (JP, A) JP-A-3-98848 (JP, U) Japanese Utility Model Application Hei 3-98846 (JP, U) Japanese Utility Model Application Hei 3-97826 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A61H 23/00 520

Claims (2)

(57) [Claims] 1. A bath water circulation flow path comprising a bath water suction flow path and a bath hot water strong flow path is interposed between a bathtub main body and a circulation pump installed outside the bathtub main body. The end of the circulation flow path is opened into the bathtub body to form a jet nozzle, and an air intake section is connected to the strong bath flow path, and the bathwater containing bubbles is jetted from the jet nozzle to the bathtub body. In the bubble tub that was made possible, the ejection nozzle is composed of an automatic ejection amount variable nozzle equipped with a nozzle valve opening / closing motor, and the power supply code and control code for the motor are protected by a single code. A jet nozzle structure in a bubble generating bath, wherein a multi-core cable structure is provided in the cable, and an air conducting tube is provided in the multi-core cable. 2. A jet nozzle structure in a bubble generating bath according to claim 1, wherein said air conduit is disposed at the center of a multi-core cable.