JP2017056161A - Swimming body appreciation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swimming body appreciation device for sending power in a wireless manner from a power transmission device to swimming bodies in a water tank by resonance using a non-radiation electromagnetic field, capable of improving transmission efficiency of power.SOLUTION: A swimming body appreciation device 1 is configured to send power in a wireless manner from a power transmission device 3 which is attached to a water tank 2 to swimming bodies 4 which swim in water or on water in the water tank 2, by resonance using a non-radiation electromagnetic field. The power transmission device 3 comprises: a power transmission side resonator 31 which is arranged on a bottom part 2a of the water tank 2, in which at least one spiral coil is arranged in a spiral-state groove which is formed on a surface of an insulation plate; an excitation controller 32; and a power transmission side sub resonator 33 which is arranged on a lid 2b of the water tank 2, in which at least one spiral coil is arranged in a spiral-state groove which is formed on a surface of an insulation plate. The swimming bodies 4 comprise respectively, a power reception device 5 comprising a power reception resonator for receiving power, and a swimming body controller 6 for controlling a motion of the swimming body 4 itself using the power from the power reception device 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a swimming body appreciation device for swimming and appreciating a swimming body such as a fish shape in an aquarium.

  2. Description of the Related Art Conventionally, various swimming body appreciation devices for swimming and watching a fish-shaped swimming body like a living fish in an aquarium are known. Among them, Patent Document 1 discloses a swimming body appreciation device that wirelessly transmits power from a power transmission device attached to a water tank to a swimming body that swims in water or in water in the water tank by resonance using a non-radiating electromagnetic field. Is disclosed.

JP 2014-223262 A

  However, the swimming body appreciation device of Patent Document 1 still has room for improvement in terms of power transmission efficiency from the power transmission device to the swimming body.

  The present invention has been made in view of such a reason, and the object of the present invention is to provide a swimming body appreciation device that wirelessly transmits power from a power transmission device to a swimming body in an aquarium by resonance using a non-radiating electromagnetic field. An object of the present invention is to provide an apparatus capable of improving the transmission efficiency of electric power from a device to a swimming body.

  In order to achieve the above object, a swimming body appreciation device according to claim 1 is based on resonance using a non-radiated electromagnetic field from a power transmission device attached to a water tank to a swimming body swimming in or on the water in the water tank. In the swimming body appreciation device for transmitting electric power wirelessly, the power transmission device is a power transmission provided at a bottom of the water tank and having at least one spiral coil disposed in a spiral groove formed on a surface of an insulating plate. A side resonator, an excitation controller for controlling excitation of the power transmission side resonator, and at least one spiral coil provided in the lid of the water tank is disposed in a spiral groove formed on the surface of the insulating plate A power receiving side sub-resonator, and the swimming body includes a power receiving device that receives power and a swimming body that controls the operation of the swimming body using the power from the power receiving device. A control device; Characterized in that it comprises.

  The swimming body appreciation device according to claim 2 is the swimming body appreciation device according to claim 1, wherein the power transmission-side resonator includes a plurality of spiral coils including the one spiral coil. The spiral coils are arranged in close proximity and connected in order, both ends of the connected spiral coils are connected, and one of these connections is a connection through a capacitor, One spiral coil different from the one spiral coil has a spiral shape formed on the back surface of the insulating plate so as to be positioned between the grooves where the one spiral coil is disposed. It is arranged in the groove.

  The swimming body appreciation device according to claim 3 is the swimming body appreciation device according to claim 1 or 2, wherein the power transmission side sub-resonator is provided at both ends of the one spiral coil of the power transmission side sub resonator. A capacitor is connected between the capacitors, and the capacitor is provided in a handle attached to the center of the lid, and one end of the capacitor is connected to the power transmission side sub-resonator at the center of the lid. One end of the one spiral coil is connected, and the other end of the capacitor is connected to the first through a wiring passing through a wiring groove formed on the back surface of the insulating plate of the power transmission side sub-resonator. The other spiral coil is connected to the other end.

  The swimming body appreciation device according to claim 4 is the swimming body appreciation device according to claim 1 or 2, wherein the power transmission side sub-resonator includes a plurality of the spiral coils of the power transmission side sub resonator. The plurality of spiral coils are arranged close to each other and connected in order, and both ends of the connected spiral coils are connected, and any one of these connections is connected via a capacitor. A spiral coil different from the one spiral coil among the plurality of spiral coils is provided between the grooves in which the one spiral coil is disposed on the back surface of the insulating plate. The capacitor of the power transmission side sub-resonator is provided in a handle attached to the center of the lid. It is characterized in.

  The swimming body appreciation device according to claim 5 is the swimming body appreciation device according to any one of claims 1 to 4, wherein the one spiral coil or the plurality of spiral coils of the power transmission side resonator. The center part is sparse, the peripheral part is tightly wound, and the size is 15% to 25% larger than the size of the water tank. Each of the spiral coils has a sparse central portion and a densely wound peripheral portion, and the size is 15% to 25% larger than the size of the water tank, or the electric conductor is solenoid-like in the cover portion of the lid It is characterized by being wound around.

  The swimming body appreciation device according to claim 6 is the swimming body appreciation device according to any one of claims 1 to 5, wherein the power receiving resonator includes a rod-shaped core-containing solenoid coil, Is arranged so that its axis is directed downward of the swimming body.

  According to the swimming body appreciation device of the present invention, in the swimming body appreciation device that wirelessly transmits power from the power transmission device to the swimming body in the aquarium by resonance using a non-radiated electromagnetic field, the power from the power transmission device to the swimming body The transmission efficiency can be improved.

It is a side view showing the block composition of the swimming body ornamental device concerning the embodiment of the present invention. 1 shows a first type of configuration of a power transmission side resonator of the swimming body appreciation device same as above, (a) is a schematic perspective view (perspective view seen from below), and (b) is a configuration of a power transmission side resonator. It is a bottom view of a spiral coil. It is a typical perspective view which shows the 2nd type structure of the power transmission side resonator of a swimming body appreciation apparatus same as the above. It is sectional drawing which shows the 1st type structure of the power transmission side resonator of a swimming body appreciation apparatus same as the above. It is sectional drawing which shows the 2nd type structure of the power transmission side resonator of a swimming body appreciation apparatus same as the above. It is a bottom view which shows the 2nd type structure of the power transmission side resonator of a swimming body appreciation apparatus same as the above. It is a side view which shows the mode of a magnetic force line in a swimming body appreciation apparatus same as the above. It is a typical perspective view which shows the 1st type structure of the power transmission side subresonator of a swimming body appreciation apparatus same as the above. It is a typical perspective view which shows the 2nd type structure of the power transmission side subresonator of a swimming body appreciation apparatus same as the above. It is sectional drawing which shows the structure of the 1st type of the power transmission side subresonator of a swimming body appreciation apparatus same as the above. It is sectional drawing which shows the 2nd type structure of the power transmission side subresonator of a swimming body appreciation apparatus same as the above. It is a part of side view which shows the modification of the power transmission side subresonator of a swimming body appreciation apparatus same as the above. It is a block diagram which shows the circuit structure of the swimming body of a swimming body appreciation apparatus same as the above.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1, the swimming body appreciation device 1 according to the embodiment of the present invention applies a non-radiated electromagnetic field from a power transmission device 3 attached to the aquarium 2 to a swimming body 4 that swims in water or on the water in the aquarium 2. The power is transmitted wirelessly by the resonance used (for example, frequency 100 kHz to 1 MHz). The swimming body 4 is preferably fish-shaped. In addition, various forms such as other creature shapes and ship shapes are possible. In addition, the code | symbol W in FIG. 1 has shown water.

  The power transmission device 3 includes a power transmission side resonator 31 provided on the bottom 2 a of the water tank 2, an excitation controller 32 that controls excitation of the power transmission side resonator 31, and a power transmission side subresonance provided on the lid 2 b of the water tank 2. And a container 33.

  As shown in FIG. 2B, the power transmission side resonator 31 uses a coil formed by winding an electric conductor (for example, a diameter of about 1 mm) in a spiral shape, that is, a spiral coil. The spiral coil is usually wound in a plane (so that the surface of the spiral coil forms a plane), and the axial direction (z-axis direction) of the spiral coil (the normal direction of the surface of the spiral coil) is It arrange | positions so that it may face upwards. The shape of the spiral coil is shown as being wound in a rectangular shape in the figure, but a shape such as a circular shape is also possible.

  Next, two possible configurations for the power transmission side resonator 31 will be described. In the first type of configuration, as shown in FIG. 2A, the power transmission side resonator 31 is composed of only one spiral coil 31a and a capacitor 31z connected between both ends of the spiral coil 31a. Is. In FIG. 2 (a), the spiral coil 31a is a perspective view using a perspective method as viewed obliquely from below for convenience of illustration. The same applies to the other perspective views.

  As shown in FIG. 3, the second type of configuration has a plurality (usually two as shown in FIG. 3) of spiral coils 31a, 31b,. These spiral coils 31a, 31b,... Are arranged close to each other and connected in order, and both ends of the connected spiral coils 31a, 31b,. Any one of these connections is a connection through a capacitor 31z. The plurality of spiral coils 31a, 31b,... Are connected so as to generate a magnetic field in the same direction, and are separated by a short distance using an insulating plate described later. These spiral coils 31a, 31b,... May have substantially the same number of turns and the same size, but may have different numbers of turns or sizes.

  The connection of the plurality of spiral coils 31a, 31b,... Will be specifically described using the connection of the two spiral coils 31a, 31b. One of both ends of the spiral coil 31a and one of both ends of the spiral coil 31b are connected via a capacitor 31z, and the other one of both ends of the spiral coil 31a and the other one of both ends of the spiral coil 31b are Each is electrically connected without a capacitor. More specifically, for example, as shown in FIG. 3, the ends of the spiral coil 31a and the spiral coil 31b are wound in opposite directions, and one end 31aa located at the center of the spiral coil 31a and the center of the spiral coil 31b. One end 31ba located in the part is connected via the capacitor 31z, and the other end 31ab located in the peripheral part of the spiral coil 31a and the other end 31bb located in the peripheral part of the spiral coil 31b are connected without passing through the capacitor. It is possible to Although not shown, other connection methods of the spiral coil 31a and the spiral coil 31b are possible.

  In these two configurations of the power transmission side resonator 31, as shown in FIG. 4, the spiral coil 31a is a spiral groove formed on the surface of an insulating plate 31i (for example, a thickness of about 2 mm to about 4 mm). 31ia (for example, a depth of about 1 mm to about 1.5 mm). FIG. 4 shows a case where the power transmission side resonator 31 has only one spiral coil 31a. The width of the groove 31ia is about the same as or slightly larger than the diameter of the electric conducting wire of the spiral coil 31a. In this way, since the spiral coil 31a is restrained, local deformation due to repulsion between the lines or external force can be prevented, and the distance between the lines can be made uniform. Thereby, the value of the capacitance component and the inductance component of the spiral coil 31a can be stabilized. In addition, the value of the AC resistance component can be stabilized by suppressing the bias of the AC current flowing on the surface of the electrical lead due to the proximity effect. As a result, power transmission efficiency from the power transmission device 3 to the swimming body 4 can be improved. The insulating plate 31i is preferably a low-loss insulator (for example, made of polyethylene). In addition, in FIG. 4 (and FIG. 5 mentioned later), illustration of the capacitor | condenser 31z is abbreviate | omitted.

  In the second type of configuration, a spiral coil different from the spiral coil 31a, that is, the spiral coil 31b, is also in a spiral groove formed on the front surface (or the back surface) of any insulating plate. Placed in. As shown in FIG. 5, the spiral coil 31b is disposed in a spiral groove 31ib formed on the back surface of the insulating plate 31i. Here, in order to suppress the mutual influence between the spiral coil 31a and the spiral coil 31b (for example, increase in the value of the AC resistance component due to the proximity effect) while making the insulating plate 31i relatively thin, The grooves 31ib are preferably formed as much as possible so as to be positioned between the grooves 31ia on the surface of the insulating plate 31i where the spiral coil 31a is disposed. For this purpose, specifically, the groove 31ib is formed so as to be positioned between the grooves 31ia except for a portion crossing the groove 31ia in plan view. If it does so, as shown in FIG. 6, the distance of a planar direction can be provided in most parts between the spiral coil 31a and the spiral coil 31b with a thickness direction.

  Further, in the spiral coil 31a (and 31b,...), The distance between adjacent electrical conductors in the spiral coil may be uniform from the center portion to the peripheral portion. In order to make the magnetic field (especially the magnetic field) uniform from the central part to the peripheral part of the water tank 2, it is preferable that the central part is sparsely wound and enlarged, and the peripheral part is densely wound and made small. Specifically, as shown in FIG. 2 (b), the spiral coil may gradually become denser from the center to the periphery, or may be a sparsely wound region with a certain distance between the electrical conductors. You may make it provide the area | region wound closely by the distance between fixed electric conducting wires.

  In addition, the size (diameter) of the spiral coil 31a (and 31b,...) Is 15% to 25% larger than the size of the water tank 2 (the maximum length of the inner wall of the water tank 2 (the inner wall with which water contacts)). % Is preferable. Then, while suppressing unnecessary power consumption as much as possible, as shown in FIG. 7, the direction of the magnetic lines of force (shown by a solid line with an arrow) in the vicinity of the inner wall (particularly, the lower portion of the inner wall) of the water tank 2 can be made substantially vertical. it can. The direction of the lines of magnetic force in the vicinity of the upper part of the inner wall of the water tank 2 will be described later.

  The excitation controller 32 controls the excitation of the power transmission side resonator 31. Specifically, the excitation controller 32 includes a high-frequency power source 32b and a coupling loop 32a as shown in FIGS. The high frequency power supply 32b excites the power transmission side resonator 31 via the coupling loop 32a that performs impedance matching. That is, the high frequency power supply 32 b outputs the output signal to the coupling loop 32 a, and the coupling loop 32 a is electromagnetically coupled to the power transmission side resonator 31. The coupling loop 32a can be replaced with other known impedance matching means. In addition, the output terminal of the high frequency power supply 32b is electrically directly connected to the circuit of the power transmission side resonator 31, and impedance matching is performed by adjusting the number of turns of the spiral coil 31a (or 31b,...) Or the capacitance value of the capacitor 31z. In some cases, impedance matching means such as the coupling loop 32a can be omitted. Further, when there are a plurality of swimming bodies 4 as shown in FIG. 1, the output signal of the high frequency power supply 32b is preferably output by current drive, that is, the output current value is controlled to be constant or substantially constant. This is because, when voltage output is performed, that is, when the output voltage value is constant, output of sufficient power may be difficult due to a voltage drop due to resonance with the swimming bodies 4 depending on the number of swimming bodies 4.

  The power transmission side sub-resonator 33 is excited by being coupled to the non-radiation electromagnetic field from the power transmission side resonator 31 that has reached the power transmission side sub-resonator 33 and generates a non-radiation electromagnetic field downward. Thereby, the power receiving side resonator 51 of the swimming body 4 can receive power not only by the non-radiating electromagnetic field from the power transmitting side resonator 31 but also by the non-radiating electromagnetic field from the power transmitting side sub-resonator 33. . In particular, when the swimming body 4 is near the water surface, it is useful to receive power from the power transmission side sub-resonator 33 by a non-radiated electromagnetic field. The power transmission side sub-resonator 33 operates by itself, and no excitation controller such as the excitation controller 32 for the power transmission side resonator 31 is provided.

  As the power transmission side sub-resonator 33, two types of configurations similar to those of the power transmission side resonator 31 are possible. That is, in the first type configuration, as shown in FIG. 8, the power transmission side sub-resonator 33 is composed of only one spiral coil 33a and a capacitor 33z connected between both ends of the spiral coil 33a. Is. As shown in FIG. 9, the second type of configuration has a plurality of (usually, two as shown in FIG. 9) spiral coils 33a, 33b,. These spiral coils 33a, 33b,... Are arranged close to each other and connected in order, and both ends of the connected spiral coils 33a, 33b,. Any one of these connections is a connection through a capacitor 33z.

  In these two types of configurations of the power transmission side sub-resonator 33, as shown in FIGS. 10 and 11, the spiral coil 33 a is similar to the spiral coil 31 a in the power transmission side resonator 31. 10 and FIG. 11 is disposed in a spiral groove 33ia formed on the lower surface.

  In the first type of configuration, the capacitor 33z is provided in the handle 2ba attached to the center of the lid 2b as shown in FIG. 10, and one end of the capacitor 33z is connected to the center of the lid 2b. Is connected to one end of the spiral coil 33a, and the other end of the capacitor 33z is connected to the other end of the spiral coil 33a via a wiring passing through a wiring groove 33iz formed on the back surface of the insulating plate 33i. Is preferred. Then, it is easy to make the lid 2b a simple shape and structure.

  In the second type of configuration, a spiral coil different from the spiral coil 33a, that is, the spiral coil 33b, is also in a spiral groove formed on the front surface (or back surface) of any insulating plate. Placed in. Similar to the spiral coil 31b in the power transmission side resonator 31, the spiral coil 33b is disposed in a spiral groove 33ib formed on the back surface (upper surface in FIG. 11) of the insulating plate 33i as shown in FIG. The The spiral groove 33ib is formed as much as possible between the grooves 33ia on the surface of the insulating plate 33i on which the spiral coil 33a is disposed, similarly to the spiral groove 31ib in the power transmission side resonator 31. preferable. For that purpose, specifically, the groove 33ib is formed so as to be positioned between the grooves 33ia except for a portion crossing the groove 33ia in plan view.

  Moreover, it is preferable that the capacitor | condenser 33z is provided in the handle 2ba attached to the center part of the lid | cover 2b, as shown in FIG. In that case, as shown in FIG. 9, the direction in which the electrical wires of the spiral coil 33a and spiral coil 33b are wound is reversed, and the one end 33aa located at the center of the spiral coil 33a and the center of the spiral coil 33b are located. One end 33ba is connected via the capacitor 33z to the other end 33ab located in the peripheral portion of the spiral coil 33a and the other end 33bb located in the peripheral portion of the spiral coil 33b without passing through the capacitor. Then, the lid 2b can have a simple shape and structure.

  Further, in the spiral coil 33a (and 33b,...), The distance between adjacent electrical conductors in the spiral coil may be uniform from the center portion to the peripheral portion. As with the spiral coil 31b, the generated non-radiated electromagnetic field (especially, the magnetic field) is sparsely wound in the center and large in the periphery so as to be uniform from the center to the periphery of the water tank 2. It is preferable to roll it down.

  In addition, it is preferable that the size (diameter) of the spiral coil 33a (and 33b,...) Is 15% to 25% larger than the size of the water tank 2 (the maximum length of the inner wall of the water tank 2). . Then, in the vicinity of the upper part of the inner wall of the water tank 2, the direction of the lines of magnetic force can be made substantially vertical (see FIG. 7).

  Moreover, instead of making the size of the spiral coil 33a (and 33b,...) 15% to 25% larger than the size of the water tank 2, the peripheral surface of the water tank 2 is placed on the lid 2b of the water tank 2, as shown in FIG. It is also possible to provide a cover portion 2bb that slightly covers the upper portion, extend the spiral coil 33a (and 33b,...), And wind the electrical conductor in a solenoid shape in the cover portion 2bb. The cover 2bb is sized so that the swimming body 4 is not hidden. Then, in the vicinity of the upper part of the inner wall of the water tank 2, the direction of the lines of magnetic force can be made substantially vertical, and the shape of the lid 2b becomes more natural.

  As shown in FIG. 1, the swimming body 4 includes a power receiving device 5 that receives the transmitted power, and a swimming body control device 6 that controls the operation of the swimming body 4 using the power from the power receiving device 5. I have.

  As shown in FIG. 13, the power receiving device 5 has a power receiving side resonator 51 that receives power by resonance with the power transmitting side resonator 31 (and the power transmitting side sub-resonator 33) of the power transmitting device 3 at a predetermined resonance frequency. doing.

  The power-receiving-side resonator 51 can use a spiral coil, but can instead use a solenoid coil 51b with a rod-shaped core 51a. The core 51a may normally be a ferrite core. The core 51a is disposed such that its axis line z 'faces downward of the swimming body 4. Then, the solenoid coil 51b including the core 51a can obtain a large inductance value even if the size is small, and when used together with the capacitor 51z, resonance is easy. The core 51a also acts as a weight that allows the swimming body 4 to be in a normal posture.

  In the power receiving device 5, the power received by the power receiving resonator 51 by resonance is rectified by the rectifier 52 and supplied to the swimming body control device 6. Various known devices can be applied to the swimming body control device 6 depending on the method of propulsion and direction control of the swimming body 4. For example, in the case where the swimming body 4 is propelled by a screw, the swimming body control device 6 can control the rotation of the screw motor. In the case where the swimming body 4 is propelled by swinging the fish-shaped tail portion, the swimming body control device 6 provides a permanent magnet in the tail-shaped portion and controls the current of the electromagnet coil to swing the permanent magnet. It can be made to move.

  As described above, the swimming body appreciation device according to the embodiment of the present invention has been described, but the present invention is not limited to that described in the above-described embodiment, and various modifications within the scope of the matters described in the claims. Design changes are possible.

DESCRIPTION OF SYMBOLS 1 Swimming body appreciation apparatus 2 Water tank 2a Water tank bottom 2b Water tank lid 2ba Water tank lid handle 2bb Cover part provided in water tank lid 3 Power transmission device 31 Power transmission side resonator 31a, 31b Power transmission side resonance Spiral coil 31i that constitutes the transmitter Insulating plate 31z on which the power transmission side resonator is arranged 31z Capacitor that constitutes the power transmission side resonator 32 Excitation controller that constitutes the power transmission device 32b High frequency power source that constitutes the excitation controller 33 Power transmission side sub-resonators 33a, 33b Spiral coil 33i constituting power transmission side sub resonators Insulating plate 33z where power transmission side sub resonators are arranged Capacitors constituting 4 power transmission side sub resonators 4 Swimming body 5 Power receiving device 51 Power receiving device Receiving side resonator 51a Core 51b Solenoid coil 6 Swimming body control device W Water

In order to achieve the above object, a swimming body appreciation device according to claim 1 is based on resonance using a non-radiated electromagnetic field from a power transmission device attached to a water tank to a swimming body swimming in or on the water in the water tank. In the swimming body appreciation device for transmitting electric power wirelessly, the power transmission device is a power transmission provided at a bottom of the water tank and having at least one spiral coil disposed in a spiral groove formed on a surface of an insulating plate. A side resonator, an excitation controller for controlling excitation of the power transmission side resonator, and at least one spiral coil provided in the lid of the water tank is disposed in a spiral groove formed on the surface of the insulating plate And the swimming body has a power receiving device having a power receiving side resonator for receiving power, and a swimming device that controls the operation of the swimming body using the power from the power receiving device. With body control device Characterized in that it comprises a.

The swimming body appreciation device according to claim 6 is the swimming body appreciation device according to any one of claims 1 to 5, wherein the power-receiving- side resonator includes a rod-shaped core-containing solenoid coil, The core is arranged so that the axis of the core faces the lower side of the swimming body.

Claims (6)

In a swimming body appreciation device that wirelessly transmits power from a power transmission device attached to a water tank to a swimming body that swims in water or on water in the water tank by resonance using a non-radiating electromagnetic field,
The power transmission device includes a power transmission side resonator disposed in a spiral groove provided at the bottom of the water tank and having at least one spiral coil formed on a surface of an insulating plate, and excitation of the power transmission side resonator. An excitation controller for controlling the power supply, and a power transmission side sub-resonator disposed in a spiral groove provided on the surface of the insulating plate, the at least one spiral coil being provided on the lid of the water tank. ,
The swimming body includes a power receiving device having a power receiving resonator that receives electric power, and a swimming body control device that controls the operation of the swimming body using the electric power from the power receiving device. Swimming body appreciation device. The swimming body appreciation device according to claim 1,
The power transmission side resonator has a plurality of spiral coils including the one spiral coil, the plurality of spiral coils are arranged close to each other and sequentially connected, and both ends of the connected spiral coil are connected. Any one of these connections is a connection through a capacitor, and one spiral coil different from the one spiral coil among the plurality of spiral coils is provided on the back surface of the insulating plate, A swimming body appreciation device, characterized in that it is disposed in a spiral groove formed so as to be positioned between the grooves of the one spiral coil. In the swimming body appreciation device according to claim 1 or 2,
In the power transmission side sub-resonator, a capacitor is connected between both ends of the one spiral coil of the power transmission side sub resonator, and the capacitor is placed in a handle attached to a central portion of the lid. One end of the capacitor is connected to one end of the one spiral coil of the power transmission side sub-resonator at the center of the lid, and the other end of the capacitor is connected to the power transmission side sub resonator. A swimming body appreciation device, characterized in that it is connected to the other end of the one spiral coil through a wiring passing through a wiring groove formed on the back surface of the insulating plate. In the swimming body appreciation device according to claim 1 or 2,
The power transmission side subresonator has a plurality of spiral coils including the one spiral coil of the power transmission side subresonator, and the plurality of spiral coils are arranged close to each other and connected in order. Both ends of the spiral coil are connected, and one of these connections is a connection via a capacitor, and one spiral coil different from the one spiral coil among the plurality of spiral coils is , Disposed on the back surface of the insulating plate in a spiral groove formed so as to be positioned between the grooves in which the one spiral coil is disposed, and The swimming body appreciation device, wherein the capacitor is provided in a handle attached to a central portion of the lid. In the swimming body appreciation device according to any one of claims 1 to 4,
The one spiral coil or the plurality of spiral coils of the power transmission side resonator has a sparse central portion and a densely wound peripheral portion, and the size is 15% to 25% of the size of the water tank. %big,
The one spiral coil or the plurality of spiral coils of the power transmission side sub-resonator has a sparse central portion and a densely wound peripheral portion, and the size is 15% to the size of the water tank. A swimming body appreciation device characterized in that it is 25% larger or an electric conducting wire is wound in a solenoid shape in the cover portion of the lid. In the swimming body appreciation device according to any one of claims 1 to 5,
The power receiving resonator includes a solenoid coil with a rod-shaped core, and is arranged so that an axis of the core faces a lower side of the swimming body.

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