JPS6147544B2 - - Google Patents

Description

[Detailed Description of the Invention] Recently, the pine surge effect, cleaning effect, and thermal effect of air bubbles in the bath have begun to be reconsidered, and in-bath foaming machines have begun to be widely used at home. In order to operate the main unit cordless and hoseless,
A bath foaming machine that has a storage battery inside the main body and uses the energy from the storage battery to rotate an electric motor to generate bubbles is excellent in terms of handling. In order to charge the storage battery, it is convenient to use an induction method in which an induced electromotive force is generated in the secondary coil of the main body by oscillating the primary coil of the charger. However, with this induction method, the primary coil of the charger is made to oscillate, so the heat generation temperature is high.
When I removed the main unit from the charger, the primary coil case was quite hot.

The present invention improves usability by making it possible to radiate heat generated by the oscillation of the primary coil more efficiently.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An in-bath foaming machine, which is an embodiment of the present invention, will be described below with reference to FIGS. 1 to 5.

This in-bath foaming machine is comprised of a main body 1 that is attached to the wall of a bathtub A or used while completely submerged in water, and a charger 2 for this main body 1. Main body 1
Inside, a storage battery 3 is placed in a case 4 sealed by heat welding, and is installed in a part of the main body 1. Further, the main body 1 has a built-in electric motor 6, and the electric motor 6 is attached to a chassis 7 and sealed with a cover 8 and a sealing material 9. A casing 10 is attached to the opposite side of the chassis 7 from the electric motor 6, and forms a spiral chamber between the casing 10 and the chassis 7. A honeycomb 11 is attached to the tip of the shaft of the electric motor 6, and the honeycomb 11 rotates in the center of the casing 10 to suck water from the bottom of the casing 10 to form a spiral pump. The water flow generated in the casing 10 is guided to the bench lily pipe 12. The water flow constricted by the nozzle portion 12a of the bench lily pipe 12 is discharged from the outlet 12b with an increased flow velocity. At this time, air is sucked in through the intake section 12c connected to the intake pipe 13, and water and bubbles are ejected from the outlet 12b. The water stream and air bubbles are ejected from the ejection port 1a provided on the front surface of the main body 1. The intake pipe 13 is formed of a plurality of pipes 13a having different diameters, has an expandable structure, and protrudes above the water surface in the bathtub A to suck in air. At the bottom of the casing 10, there is a filter 14 made of mesh and foam, which can be attached and removed from the outside by a filter case 15, and protects the casing 10 from foreign matter. The filter 14 is connected to the bottom and side suction ports 16 communicating with the inside of the bathtub A.

A coil case 18 containing a secondary coil 17 is attached to the chassis 7 while being sealed with an O-ring 19, and extends onto the bottom surface of the main body 1. Further, a control circuit 20 containing control parts and the like is built into the upper part of the electric motor 6, and this control circuit 20 is also covered with a cover 21 which is thermally welded and has a sealed structure. In addition, the connection between the storage battery 3, the electric motor 6, the secondary coil 17, and the control circuit 20 is made using a round cord 2.
2, and use the waterproof connector 23 in the middle part to connect.

Next, to explain the charger 2, an oscillation circuit 25 is installed inside, and a part of the protrusion 2 of the charger 2
A primary coil 26 and a core 27 are attached to the inside of a, and the primary coil 26 and 26 are connected to an oscillation circuit 25. The protrusion 2a is connected to the coil case 1.
It is structured to be fitted into the recess 18a of No.8.
In order to radiate the heat generated by the primary coil 26 due to the oscillation of the primary coil 26, the core 27 has a portion 27a covered with the coil bobbin 24 and a portion 27b not covered, and this portion 27b radiates heat. , protrusion 2
This lowers the temperature of a.

Furthermore, the portion 27b of the core 27 that is not covered by the coil bobbin 24 is not located within the protrusion 2a but extends downward, which is a wide part of the space with good heat dissipation efficiency, thereby improving the heat dissipation effect. There is.

Furthermore, a through hole 27c is formed in the center of the core 27 to make it hollow, thereby increasing the heat radiation area and increasing the heat radiation efficiency. Note that at least the core 27
The part 27 not covered by the coil bobbin 24 of
By using ferrite as the material of b, induction heating due to oscillation of the primary coil 26 is not caused, and on the contrary, heat is radiated. Figure 5, 3
1 is a core fixing rib formed on the case of the charger 2, and 32 is a fixing urethane 27.

Then, when you set the main unit 1 on the charger 2,
When the coil case 18 and the projection 2a of the charger 2 are fitted together and the magnet 28 at the bottom of the main body 1 approaches the reed switch 29 of the charger 2, the power of the charger 2 is turned on. When the primary coil 26 oscillates by the oscillation circuit 25, a current is induced in the secondary coil 17. The induced current is guided to the control circuit 20 and rectified to charge the storage battery 3.

The bath foaming machine is installed by submerging the main body 1 in the bathtub A after charging the storage battery 3. At that time, the intake pipe 13 is extended to position the tip above the water surface in the bathtub. In this state, when the electric motor 6 is driven by operating the switch 30, water is sucked through the suction port 16 and introduced into the vent tube 12. The water is then throttled by the nozzle portion 12a to increase the flow velocity and is ejected into the bathtub from the spout 1a through the outlet 12b. At this time, since air is being sucked in through the intake pipe 13, a water stream and air bubbles are ejected. This increases the pine surge effect and thermal effect.

As explained below, the in-bath foaming machine of the present invention includes:
Since it consists of the main unit and a charger, you can take only the main unit into the bathroom when using it, and since the main unit operates on a storage battery, there is no need for a power cord, making it easy to use, and the heat dissipation effect of the core is good. This prevents the temperature of the charger from rising and further improves usability.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the in-bath foaming machine of the present invention in use, Fig. 2 is an exploded external perspective view of the main body and charger, and Fig. 3 is a longitudinal section showing the structure of the main body and charger in disassembled form. 4 is a sectional view of the bench lily tube portion, and FIG. 5 is an enlarged sectional view of the primary and secondary coil portions. 1...Body, 2...Charger, 3...Storage battery, 6
... Electric motor, 10 ... Casing, 11 ... Haneguruma, 12 ... Bench lily tube, 13 ... Intake pipe, 17 ... Secondary coil, 24 ... Coil bobbin, 25 ... Oscillation circuit, 26 ... Primary coil, 2
7...core, 27a...portion covered by the coil bobbin, 27b...portion not covered by the coil bobbin.

Claims (1)

[Claims] 1 An electric motor that drives the centrifugal pump, a storage battery that supplies power to the electric motor, a control circuit that controls the electric motor, an intake pipe that communicates with the outside air, and a water flow generated by the centrifugal pump that passes through the intake pipe and injects air bubbles. The battery includes a bench lily tube that mixes and ejects a charge current, a secondary coil that generates a charging current, a main body that contains these parts, and a charger that contains an oscillation circuit and a primary coil that faces the inside of the secondary coil. . A foaming machine in a bath, wherein the primary coil is wound in a cylindrical shape around a coil bobbin, and a cylindrical core longer than the axial dimension of the coil bobbin is inserted into the inner diameter portion of the primary coil.