JPH03165013A - Power supplying apparatus through wall - Google Patents

Abstract

PURPOSE:To omit the requirement for forming a hole in the wall plate of a tightly closed chamber and to eliminate the obstruction due to cords by arranging and fixing an induction device on the primary side connected to a power source and an induction device on the secondary side connected to electric apparatus in the chamber so as to face each other. CONSTITUTION:Induction devices 7 and 13 on the primary side and the secondary side are fixed with the attracting forces of magnets 12 and 17 with a wall plate 1a in-between. When a cord 6 is connected to a power source, the commercial power source is converted into the high-frequency AC power through a high-frequency converter circuit 5. The AC power is supplied to a primary-side coil 8. Thus, the voltage which is proportional to the turn ratio between coils 8 and 14 on the primary side and the secondary side is generated by electromagnetic induction in the coil 14 on the secondary side. The voltage is supplied to an electric apparatus 4. In this way, the power can be supplied to the inside of a tightly closed chamber 1 from the outside of the wall plate 1a without providing a hole in the wall plate 1a and inserting a cord through the gap at a door.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for supplying power to electrical equipment housed in an enclosed space.

[Prior Art] Electrical equipment is sometimes stored and used in a closed room surrounded by a wall board, such as a wardrobe, a closet, or a clothing storage box. As this electrical equipment, for example, Japanese Patent Application No.
As shown in No. 51050, cooling fins and heat dissipating fins fixed thereto are housed in a box having ventilation holes, and when the cooling element is energized, an endothermic action occurs on its endothermic side. The cooling fins are cooled. on the other hand,
Heat generation occurs on the heat radiation side of the cooling element, and this heat is transmitted to the radiation fins and radiated.

In this way, the air in the sealed room is kept dry by removing moisture by condensing on the cooling fins through the ventilation holes.

The cord that supplies power to this cooling element is supplied by punching a hole in the wall plate or inserting the cord through a gap in the door.

[Problem to be solved by the invention]

In the conventional power supply equipment for closed rooms as described above, the power supply cord is inserted through a hole in the wall or a gap in the door, which requires a hole in the wall plate. The problem is that the code gets in the way.

This invention was made to solve the above problems, and provides an over-the-wall power supply device that eliminates the need to make holes in the wall plate of a closed room and eliminates the need for cords to get in the way. The purpose is to provide.

[Means for Solving the Problems] The over-the-wall power supply device according to the present invention has a primary induction device connected to a power source and a secondary induction device connected to an electrical device in the sealed room, sandwiching the wall plate of the closed room between them. The next-side guidance device is arranged and fixed to face each other.

[Function] In this invention, since the primary induction device and the secondary induction device are fixed with the wall plate in between, electric power is supplied from the primary induction device to the secondary induction device due to electromagnetic induction.

[Example] FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

In the figure, (1) is a sealed chamber, which is surrounded by a wall plate (la) and has a space (2) inside. (4) is space (
2) Electrical equipment such as the above-mentioned electronic drying device stored in the
(5) is a frequency conversion circuit connected to a cord (6) having a plug at the tip, which is fixed to the wall plate (la).

(7) is a primary side induction device placed outside the wall plate (la), in which a primary side coil (8) connected to the frequency conversion circuit (5) is wound through an insulator (9). A primary side iron core (1G) is embedded in a frame (11) made of synthetic resin,
Magnets (12) are similarly embedded above and below the primary iron core (lO). (13) is a secondary induction device placed inside the wall plate (la), in which a secondary coil (14) connected to an electrical device (4) is wound through an insulator (15). A secondary core (16) is embedded in a frame (17) made of synthetic resin, and magnets (18) are similarly embedded above and below the secondary core (16).

In the over-the-wall power supply device configured as described above, the primary and secondary induction devices (71 (13) are connected to the magnet (
12) It is fixed across the wall plate (1a) by the suction force of (17).

When the cord (6) is connected to the power source, the commercial power source is converted into high frequency alternating current power by the high frequency conversion circuit (5) and supplied to the primary coil (8). Now, due to electromagnetic induction, a voltage proportional to the turns ratio of the primary and secondary coils (8) (14) is generated in the secondary coil (14), and is supplied to the electrical equipment (4).

In this way, there is no need to make a hole in the wall board (la) or insert a cord through the gap in the door (not shown). It is possible to supply

FIGS. 2 and 3 are longitudinal sectional views of main parts showing other embodiments of the present invention, and FIG. It is fixed, and FIG. 3 shows it fixed with screws (22).

In both cases, the power supply function is the same as that in FIG.

[Effects of the Invention] As explained above, in the present invention, a primary induction device connected to a power source and a secondary induction device connected to electrical equipment in the sealed room are connected to each other with the wall plate of the sealed room in between. Since they are placed facing each other and fixed, power is supplied from the primary induction device to the secondary induction device due to electromagnetic induction, making it impossible to seal, punch a hole in the wall of the room, or insert it through the gap in the door. This has the effect of supplying power to electrical equipment in a closed room.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing one embodiment of an over-the-wall power supply device according to the present invention, and FIGS. 2 and 3 are longitudinal cross-sectional views of essential parts showing other embodiments of the present invention. In the figure, (1) is a sealed room, (la) is a wall plate, (2) is a space, (4) is an electrical device, (7) is a primary induction device, (8) is a primary coil, (lO) is the primary iron core,
[12] is the fixing means (magnet), (13) is the secondary induction device, (14) is the secondary coil, (16) is the secondary iron core, (18) is the fixing means (magnet), (211) is the fixing means (
(adhesive), (22) is a fixing means (screw). Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] a primary induction device having a sealed chamber surrounded by a wall plate and containing predetermined electrical equipment in an internal space, a primary coil connected to a power source, and a primary iron core around which the primary coil is wound; A secondary induction device including a secondary coil to which the electrical equipment is connected and a secondary iron core around which the secondary coil is wound, and which is disposed opposite to the primary induction device; and a fixing means for fixing the secondary side induction device across the wall plate of the sealed chamber.