JP5452394B2 - Fixture with contactless power supply function - Google Patents

Description

  The present invention relates to a fixture with a non-contact power supply function, and more particularly to a fixture having a function of blocking leakage of electromagnetic waves generated from a non-contact power supply unit to the outside.

  2. Description of the Related Art In recent years, as a power feeding system that feeds power to a load device, a non-contact power feeding system that performs power feeding in a non-contact manner from a power feeding device to a power receiving device provided on the load device side is known.

  As an example, for example, in Patent Document 1, a power supply device built in a load device is provided with a primary coil and a first magnetic body connected thereto, and a power receiving device is connected to a secondary coil and a second coil. A non-contact power feeding system provided with a magnetic material is disclosed. The primary coil and the secondary coil are guided to a predetermined position by the attractive force between the first magnetic body and the second magnetic body, and perform non-contact power feeding from the primary coil to the secondary coil. Then, by providing a magnetic shield in at least one of the power feeding device and the power receiving device, the electromagnetic wave does not affect the load device.

JP 2009-95072 A

  However, in the conventional example shown in Patent Document 1 described above, although the magnetic shield is applied to the load device, electromagnetic waves are likely to leak to the outside from the side surface direction of the power receiving device that is not magnetically shielded. For this reason, there is a problem of affecting other load devices arranged in the lateral direction.

  The present invention has been made in view of the above circumstances, and the object of the present invention is not to have an influence of electromagnetic waves generated from the power feeding device and the power receiving device on the fixture body or the load equipment installed in the room. An object of the present invention is to provide a fixture with a non-contact power feeding function.

  In order to solve the above-mentioned problems, the fixture with a non-contact power feeding function of the present invention has a fixture main body installed on the floor where the power feeding device is embedded, and the fixture main body has a top plate portion and an outer periphery of the top plate portion. A side wall portion extending from the side toward the floor surface, placing a load device above the top plate portion, and in a space surrounded by the top plate portion and the side wall portion, The power receiving device that receives power from the power feeding device in a non-contact manner and supplies the power to the load device is housed, and all surfaces other than the floor facing side of the space portion are covered with a shield member.

  It is preferable that a vertical partition wall is erected upward from the upper surface of the top plate portion, and the load device is installed and fixed on one surface of the partition wall.

  It is preferable that the other surface opposite to one surface of the partition wall has a function of either a desk function or a storage function.

  The fixture with a non-contact power feeding function of the present invention can prevent the influence of electromagnetic waves generated from the power feeding device and the power receiving device on the fixture body or the load equipment installed in the room.

It is front sectional drawing explaining an example of embodiment of the fixture with a non-contact electric power feeding function of this invention. It is side surface sectional drawing same as the above. It is front sectional drawing of embodiment which embed | buried the feeding coil and the high frequency inverter in the inside of a floor same as the above. It is other embodiment and it is side sectional drawing explaining an example which gave the desk function to the back side of the partition wall of the fixture main body. It is side surface sectional drawing explaining an example which is another embodiment and gave the storage function to the back side of the partition wall of the fixture main body.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a view of a fixture with a non-contact power feeding function of the present embodiment as viewed from the front, and FIG. 2 is a view as viewed from the side. In the following example, a detached house or an apartment house is assumed as a building, but the building is not limited to a house but may be a building such as an office or a store.

  A power feeding device 5 is embedded in the floor material 8 constituting the floor F for flooring. The power feeding device 5 may be disposed on the lower surface side of the flooring 8. The power supply device 5 includes a power supply coil 5a that converts electric energy from a commercial power source into magnetic energy to generate a high-frequency magnetic field, and a high-frequency inverter 20 (FIG. 3) that controls the frequency of the alternating current. In addition, although the thing formed in the unit dimension is used as the flooring 8, forming in a unit dimension is not essential. Cork tiles, plastic tiles, and the like can also be used as the flooring 8.

  The fixture 2 includes a fixture main body 3 having the function of a partition wall. A caster 18 is attached to the fixture body 3 so that it can travel on the floor F. In addition, it is desirable to provide the caster 18 with a lock mechanism (not shown) and fix the fixture body 3 so as not to move on the spot.

  The fixture body 3 is provided with a top plate portion 9, a side wall portion 12 extending from the four sides of the top plate portion 9 to the vicinity of the floor surface 7, and a bottom plate portion 23 covering the lower surface side of the side wall portion 12. ing. The power receiving device 6 is housed in the space 10 surrounded by the top plate 9, the side wall 12, and the bottom plate 23.

  The power receiving device 6 of this example includes a power receiving coil 6 a, a rectifying and smoothing circuit 21, and a sine wave output inverter 22. The power receiving coil 6a generates a voltage from the change in the magnetic field of the power feeding coil 5a. The rectifying and smoothing circuit 21 converts the power received by the power receiving coil 6a into DC power and outputs it. The sine wave output inverter 22 converts DC power (for example, 24V) output from the rectifying / smoothing circuit 21 into load power (250 W or more, AC100V, 50/60 Hz). A gap G (FIG. 1) between the feeding coil 5a and the receiving coil 6a is, for example, 45 mm. Further, the outer diameter dimension M of the power feeding coil 5a shown in FIG. 3 is 345 mm, for example, and the outer diameter dimension N of the power receiving coil 6a is 245 mm, for example.

  The power feeding device 5 and the power receiving device 6 constitute a non-contact power feeding unit 4. That is, a non-contact power feeding system is configured that converts magnetic energy from the power feeding coil 5a into electric energy by the power receiving coil 6a based on the principle of electromagnetic induction and supplies power to the load device.

  Here, the shield member 11a having non-magnetic permeability is coated over the entire inner surface of the top plate portion 9, and the shield member 11b having non-magnetic permeability is coated over the entire inner surface of the side wall portion 12. Yes. The inner surface of the bottom plate portion 23 located on the floor facing side A is not covered with a shield member. As a result, the space 10 surrounded by the top plate 9 and the side wall 12 has a magnetic shield space on all surfaces other than the floor facing side A where the feeding coil 5a is embedded.

  On the other hand, from the upper surface of the top plate portion 9, a vertical partition wall 13 having a flat box shape is erected upward. The upper end height of the partition wall 13 is set lower than the ceiling height, but may be the same height as the ceiling height. The size of the partition wall 13 in this example is set to a size capable of installing a 37V type television.

  A television installation surface 14 (FIG. 2) for installing and fixing a thin television as the load device 1 is provided on the front surface 13 a of the partition wall 13. In addition to flat-screen TVs, the load devices widely include various electronic devices such as DVD recorders, LED lighting fixtures, notebook computers, radios, stereos, tuners, hairdressing devices, and mobile phones.

  An outlet 15 is installed below the television installation surface 14. The outlet 15 is connected to the output side of the sine wave output inverter 22 through an electric circuit 50 that passes through the top plate portion 9 and the shield member 11a. A TV 15 can be used by providing an outlet 15 capable of supplying relatively large power and inserting a plug provided at one end of the power cord 51 of the flat-screen TV into the outlet 15. In addition, the installation position of the outlet 15 can be selected as appropriate, such as a side surface portion or a top surface portion of the fixture body 3 other than the partition wall 13.

  Thus, the power receiving device 6 is accommodated in the space portion 10 surrounded by the top plate portion 9 and the side wall portion 12 of the fixture body 3 having the above-described configuration, and all surfaces other than the floor facing side A in the space portion 10 are shield members. Since it covered with 11a, 11b, it can prevent that the electromagnetic waves which generate | occur | produce from the power receiving apparatus 6 leak to the exterior of the fixture main body 3. FIG. Moreover, since the lower end portion of the shield member 11b provided on the side wall portion 12 extends to a position near the floor surface 7, the magnetically shielded space portion 10 extends to the vicinity of the floor surface 7. Thereby, the high-frequency magnetic field generated from the power supply device 5 inside the flooring 8 is not leaked to the outside of the fixture body 3, and the power supply efficiency can be increased. The load device 1 can be prevented from being affected by electromagnetic waves.

  In this example, since the load device 1 such as a thin-screen television is installed on the flat box-shaped partition wall 13 erected from the upper surface of the top panel portion 9, the top panel portion 9a around the partition wall 13 (FIG. 1, 2) can be used as a storage space or a table. Moreover, since the outlet 15 is provided in the partition wall 13, the power cord 51 of the load device 1 is accommodated in the partition wall 13, and does not hang outside and get in the way.

  Furthermore, in this example, since the furniture main body 3 can be moved by the casters 18, the floor F can be easily cleaned. When the fixture body 3 is provided with a charging device (not shown) and the fixture body 3 is moved to a floor surface away from the floor surface 7 in which the power feeding device 5 is embedded, the charging device 1 loads the load device 1. It is also possible to adopt a configuration in which power is supplied to the battery.

  FIG. 4 shows an example of a case where the back surface 13b of the partition wall 13 has a desk function. In the figure, 52 is a DVD recorder, 19 is an LED lighting apparatus, and other configurations are the same as those in the above embodiment. In this example, a part of the rear surface 13b of the partition wall 13 is a desk 16 that can be tilted up and down. In a state where the desk 16 is held horizontally, a space where a person can sit on the chair and put his feet under the desk 16 is secured. When the desk 16 is not used, it can be stored compactly by standing vertically. An LED lighting device 19 that illuminates the upper surface of the desk 16 is provided on the upper end side of the partition wall 13. The electric power of the LED lighting device 19 is supplied from the sine wave output inverter 22 of the power receiving device 6. Further, in this example, an electric circuit connected to the output side of the sine wave output inverter 22 is connected to the desk 16, and the desk 16 itself has a power supply function for supplying power to, for example, a notebook computer via this electric circuit.

  FIG. 5 shows an example where the back surface 13 b of the partition wall 13 has a storage function. Other configurations are the same as those in FIG. In this example, the storage space 17a opened toward the back of the partition wall 13 is provided, and the storage shelf 17a is partitioned into a plurality of upper and lower stages by a horizontal shelf board 17. Thereby, the surface 13b on the back side of the partition wall 13 can be effectively used as the storage space 17a.

  In the said embodiment, although the electric power feeder 5 is arrange | positioned in a part of floor F, you may arrange | position the electric power feeder 5 over the substantially whole surface of the floor F, In this case, the fixture main body 3 is arbitrary. It can be used by moving to the position.

  In the embodiment, the energy transmission method using the principle of electromagnetic induction is exemplified as an example of the non-contact power supply system, but a magnetic field resonance method or an electric field resonance method which has been attracting attention in recent years may be adopted. If energy is transmitted using these techniques, energy can be transmitted with high efficiency even at a distance of about 1 to 2 m (the efficiency of 40% is confirmed at 2 m in the magnetic field resonance method). In the present invention, if a magnetic field or electric field resonance method capable of transmitting energy to a relatively far distance with high efficiency is adopted, the fixture main body 3 is moved to a place away from the power feeding device 5 embedded in the floor F. Even in such a case, contactless power feeding to the load device 1 can be performed.

  By the way, in the non-contact power supply system, if power is always supplied to the power supply device 5, there is a possibility that wasteful power consumption may occur or communication failure due to unnecessary radiation may occur. Therefore, the power feeding device 5 and the power receiving device 6 are communicated intermittently between the power feeding device 5 and the power receiving device 6, and when the power feeding device 6 needs to feed power, the power feeding device 5 is continuously operated to feed power to the power receiving device 6. It is desirable to do. In addition, it is desirable that the output of the power feeding device 5 is variable, and electrical energy is supplied according to the load device in response to a request from the power receiving device 6.

DESCRIPTION OF SYMBOLS 1 Load apparatus 2 Fixture 3 Fixture main body 4 Non-contact electric power supply unit 5 Power supply apparatus 6 Power receiving apparatus 7 Floor surface 9 Top plate part 10 Space part 11a, 11b Shield member 12 Side wall part 13 Partition wall 13a One side 13b The other side A Floor Opposite side F floor

Claims (3)

  A fixture body is installed on the floor where the power feeding device is embedded, and the fixture body is provided with a top plate portion and a side wall portion extending from the outer peripheral side of the top plate portion toward the floor surface, and the top plate A power receiving device that arranges a load device above a section and receives power from the power feeding device inside the floor in a non-contact manner and is supplied to the load device in a space surrounded by the top plate portion and the side wall portion. A fixture with a non-contact power feeding function characterized in that it is housed and all surfaces other than the floor facing side of this space portion are covered with a shield member.   The non-contact power supply function according to claim 1, wherein a vertical partition wall is erected upward from an upper surface of the top plate portion, and the load device is installed and fixed on one surface of the partition wall. A fixture. 3. The fixture with a non-contact power feeding function according to claim 2, wherein the other surface opposite to the one surface of the partition wall has one of a desk function and a storage function.

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