JP2563963Y2 - Foam for bathtub - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bath tub foamer that blows out a jet water stream containing air bubbles in a bath tub, and has an improved jet water stream jetting part.

[Conventional technology]

Examples of this type of foaming device for a bathtub include, for example, Jitsuho 1-3122
As disclosed in JP-A No. 2 (1994), a movable nozzle having a tapered dufuser portion at an inlet is disposed so as to be capable of swinging at a front portion of a fixed nozzle that jets hot and cold water discharged from a pump in a certain direction. An air chamber that guides air between the fixed nozzle and the movable nozzle, and sucks air from the air chamber with a negative pressure generated when water jetted from the fixed nozzle is blown into the diffuser portion of the movable nozzle; There is known a configuration in which a jet water stream containing air bubbles is ejected into a bathtub from a water bath.

[Problems to be solved by the invention]

However, in the above-described conventional example, when the movable nozzle is swung largely, a part of the discharge water flow from the fixed nozzle directly collides with the inner surface of the diffuser portion of the movable nozzle, and turbulent flow is easily generated. Therefore, the generation of the negative pressure is hindered, and the air suction effect tends to decrease.

In view of the above, the present invention provides a stable air suction effect regardless of the swing of the movable nozzle by improving the means for injecting discharge water from the fixed nozzle to the movable nozzle in the above-described bathtub foamer. The purpose is to be.

[Means for solving the problem]

In order to achieve the above object, in the foamer for a bathtub of the present invention, as shown in FIG. 1, an elastically deformable guide tube 24 is attached to a fixed nozzle 19, and the tip of the guide tube 24 is inserted into the movable nozzle 3. And guide tube
Air passages communicating the air chamber 20 and the outlet side of the movable nozzle 3 at a plurality of locations in the circumferential direction between the outer surface of the movable nozzle 3 and the inner surface of the movable nozzle 3
25 is formed.

[Action]

According to the above configuration, the hot and cold water discharged from the fixed nozzle 19 is guided by the guide tube 24 and is jetted into the movable nozzle 3.
A plurality of air passages 25 between the outer surface of the movable nozzle 3 and the inner surface of the movable nozzle 3
The air is sucked in through the nozzle, mixed with the water stream, and jetted out of the movable nozzle 3 into the bathtub as a jet water stream containing bubbles.

In this case, when the movable nozzle 3 is swung, the distal end side of the guide tube 24 is deformed following the movable nozzle 3 as shown in FIG. Is smoothly bent, no turbulence is generated, hot water is jetted into the movable nozzle 3, a negative pressure is properly generated, and air is well sucked through the ventilation passage 25.

[Effect of the invention]

As described above, according to the present invention, even when the movable nozzle 3 is swung, the occurrence of turbulent flow when the movable nozzle 3 is blown from the fixed nozzle 19 into the movable nozzle 3 is always performed so that appropriate air suction mixing is performed. It has become possible to jet a jet water stream containing bubbles in a desired direction.

〔Example〕

FIG. 8 shows the overall appearance of the foaming device for a bathtub according to the present invention, FIG. 7 shows a vertical side surface in the used state, and FIG. 1 shows a vertical side surface of a main part thereof.

As shown in FIG. 7, the foamer according to the present invention has a pump unit 2 inside a box-shaped main body case 1. This unit 2 takes in external hot water and blows it out to the lower front part of the main body case 1. Then, a basic mode of generating a jet water flow containing bubbles in hot and cold water is adopted. At the back of the main body case 1, there are provided mounting means 4 for hanging and supporting the main body case 1 on the upper edge 6 of the peripheral wall of the bathtub 5.

In FIG. 1, a pump unit 2 includes a centrifugal pump 7, a DC motor 8 for driving the pump 7, and a cylindrical cover 11 which cooperates with a pump housing 9 to partition a motor housing 10 into a watertight state. Become.

A water inlet 12 is opened at one side of the lower surface of the pump housing 9, and a discharge port 13 is opened at the center of the front end surface. In FIG. 1, reference numeral 14 denotes a impeller, and reference numeral 15 denotes a mechanical seal.

A strainer 17 having a large number of suction grooves 16 is detachably mounted on the bottom surface of the main body case 1 facing the water suction port 12. On the outer surface of the discharge port 13 of the pump 7 in the main body case 1, there is provided a mixer 18 for mixing air bubbles into the water flow discharged from the pump 7.

The mixer 18 has a fixed nozzle 19 connected to the discharge port 13.
The movable nozzle 3 having a cylindrical wall 21 surrounding the fixed nozzle 19 and defining an air chamber 20, and the movable nozzle 3 whose inner surface passage is narrowed in a venturi shape at the front end of the cylindrical wall 21. Reference numeral 3 is supported by a press ring 22 having an inner peripheral portion screwed into the outer surface of the cylindrical wall 21. The movable nozzle 3 is connected to the cylindrical wall 21 via a spherical seat, and the direction of the nozzle tip can be freely changed as necessary by loosening the tightening by the press ring 22. An air introduction port 23 also serving as a hose joint is protruded from the upper surface of the cylindrical wall 21.

A rubber guide tube 24 is externally fitted and fixed to the tip of the fixed nozzle 19, and the tip of the guide tube 24 is inserted at the minimum inner diameter portion of the movable nozzle 3. Then, as shown in FIG. 2, a plurality of locations (four locations in the embodiment) of the narrowing inner peripheral surface of the movable nozzle 3 in the circumferential direction are cut into a triangular cross section, and the surface of the guide tube 24 and the movable nozzle 3
An air passage 25 is formed between the air chamber 20 and the inner surface of the air chamber 20 to communicate with the outlet side of the movable nozzle 3 of the air chamber 20.

By connecting the fixed nozzle 19 and the movable nozzle 3 with the elastically deformable guide tube 24 as described above, even when the movable nozzle 3 is swung and set as shown in FIG. The hot and cold water can be ejected into the movable nozzle 3 without generating turbulence.

7 and 8, the mounting means 4 includes a gate-shaped hanging frame 26 projecting upward from the rear end of the upper wall of the main body case 1 and a horizontal frame portion above the hanging frame 26. It comprises a hanger body 27 mounted on 26a and a suction cup 28 mounted on the lower surface of the hanger body 27. Separately, suction cups 29 are mounted on the left and right sides of the back wall of the main body case 1.

The hanging frame 26 is made of a hollow stainless steel pipe material, and the left and right vertical frame portions 26b are supported by guide fittings 30 fixed to the inner surface of the back wall of the main body case 1, respectively. It is attached to the main body case 1 so as to be vertically movable.

Hanger body to supply air for foaming to mixer 18
An air supply path is provided using the hanging frame 27 and the hanging frame 26. Specifically, an air inlet 31 communicating with a hollow hanger body 27 communicating with the outside air is provided in the lateral frame portion of the suspension frame 26 at the left and right center positions of 26a, and the hanger body 27 and the suspension frame 26 Use the inside for air passages. Further, as shown in FIG. 7, a hose 33 is connected to the lower end of one vertical frame portion 26b via an elbow 32, and the other end of the hose 33 is connected to the air inlet 23 of the mixer 18.

In FIG. 8, reference numeral 34 denotes a waterproof switch button for controlling the energization of the motor 8. The DC current (20 V) for driving the motor 8 is supplied by rectifying and rectifying the AC current with a power supply unit (not shown).

As shown in FIG. 4, a hose unit 35 can be attached to the movable nozzle 3 for spraying a thinner jet water stream to a desired position on the body to perform massage or the like.

4 to 8, the hose unit 35
A connection tube 36 that can be externally fitted to the movable nozzle 3 and a nozzle rod 37 having a fine hole are connected by a flexible hose 38. A guide groove 40 for engaging a pair of connecting pins 39 protruding at diagonal positions on the outer periphery of the movable nozzle 3 is formed on an end face of the connection cylinder 36, and a loose spiral connection is formed inside the guide groove 40. Groove
41 is provided along the circumferential direction, the connection pin 36 is introduced into the engagement groove 41 and the connection pipe 36 is turned to connect the connection pipe 36 to the movable nozzle 3.
It has a bayonet structure that draws and connects to the side. When the hose unit 35 is attached, the cylindrical portion 36a protruding from the connecting cylinder 36 is inserted into the guide tube 24, so that the air is not mixed.

In the above embodiment, a notch is formed in the inner surface of the movable nozzle 3 to form the ventilation path 25 between the guide tube 24 and the movable nozzle 3. It is also possible to form the ventilation path 25 by providing a groove in the front-back direction.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the foaming device for a bathtub according to the present invention, FIG. 1 is a longitudinal sectional side view of a pump unit, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. FIG. 4 is a longitudinal side view showing a hose unit connecting portion, FIG. 5 is a perspective view showing a part of the hose unit, FIG. 6 is a side view thereof, FIG. FIG. 7 is an overall longitudinal side view showing a state of attachment to a bathtub, and FIG. 8 is an overall external perspective view. 1 ... body case, 3 ... movable nozzle, 7 ... pump,
19 ... fixed nozzle, 20 ... air chamber, 24 ... guide tube, 25 ... air passage.

Claims (1)

(57) [Scope of request for utility model registration] 1. A pump (7) for taking hot water into a body case (1) and discharging the same, a fixed nozzle (19) for jetting hot and cold water discharged from the pump (7) in a fixed direction, and a fixed nozzle (19). A movable nozzle (3) disposed in front of the movable nozzle (19) and capable of swinging; and an air chamber (20) for guiding air between the fixed nozzle (19) and the movable nozzle (3). In the bathtub foamer, an elastically deformable guide tube (24) is attached to the fixed nozzle (19), and the tip of the guide tube (24) is inserted into the movable nozzle (3). Bath foamer having a ventilation path (25) communicating between the air chamber (20) and the outlet side of the movable nozzle (3) at a plurality of locations in the circumferential direction between the movable nozzle (3) and the inner surface of the movable nozzle (3). .