JPH02296308A - Electromagnetic induction outlet - Google Patents

Abstract

PURPOSE:To miniaturize and lighten the power source part of an electric apparatus by dividing a transformer into a primary side to be connected to a commercial power source and a secondary side to be connected to an electric apparatus, and taking out optional voltage from the commercial power source making use of electromagnetic induction. CONSTITUTION:A primary side coil 11 is wound around a primary coil 10, and both ends of the winding of the coil are attached to commercial power input terminals 12, and are connected to commercial power sources. A secondary coil 21 is wound around a secondary core 20, and both ends of the winding of the coil are connected to an output cord 25 and are connected to an electric apparatus. In this case, when the secondary case projection 22a of a transformer is press-fit in a mounting recess 13, it becomes a transformer, and when commercial power inputted from the commercial power input terminal 12 flows to the primary coil 11, the primary coil 11 and the secondary coil are coupled by electromagnetic induction, and at the secondary coil 21, by changing the number of windings of the coil, optional voltage can be taken out. Hereby, circuit components low in break down strength can be used, and miniaturization, weight reduction, and cost reduction can be realized.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic induction outlet, and in particular, a transformer part is connected to a primary side connected to a commercial power supply and a secondary side connected to an electric device. This invention relates to an electromagnetic induction outlet that is divided into two parts and has a structure that allows any voltage to be extracted from a commercial power supply.

[Conventional technology]

Figure 7 is a side view of a conventional wall-mounted electrical outlet.
FIG. 8 shows an external view of the wall-embedded type outlet. 1
2 indicates a contact fitting into which an AC plug is inserted and connects it by pressure contact; 2 indicates a cover 3; a screw for attaching the cover to a wall; 4 indicates a plug insertion port; and 5 indicates a wall.

Insert the AC plug (not shown) into plug socket 4,
By contacting the plug and the contact fitting 1, only commercial power is supplied to the electrical equipment.

[Problems to be Solved by the Invention] In the conventional example described above, only commercial power can be obtained, so a transformer is installed in each power supply section of the electrical equipment, and an electronic device that can withstand the high voltage of the commercial power supply is installed. This makes it extremely difficult to make the power supply part smaller and lighter. Some devices take the power supply section outside and use it as an AC adapter, but as the power consumption increases, the device becomes quite large and heavy, making it very inconvenient to carry.

Also, inside the plug socket 4 there is a contact metal fitting 1 to which a commercial power supply is connected, so children and others can easily insert metal objects into the plug socket 4, which could cause an electric shock. It is a danger.

An object of the present invention is to provide an electromagnetic induction outlet that solves the conventional problems.

[Failure to solve the problem]

In order to achieve the above object, the electromagnetic induction outlet of the present invention is divided into a primary side part connected to a commercial power supply of a transformer and a secondary side part connected to an electric device.
An object of the present invention is to provide an electromagnetic induction outlet having a structure capable of obtaining any voltage from a commercial power source.

[Function] An electromagnetic induction outlet has a structure in which the transformer is divided into a primary side that is connected to a commercial power source and a secondary side that is connected to electrical equipment, and the two are connected when in use. .

Therefore, by changing the turns ratio of the secondary side or adding a rectifier circuit, it is possible to extract any voltage, whether AC or DC.

Therefore, the power supply portion of the electric device can be made smaller and lighter.

〔Example〕

FIG. 1 shows an electromagnetic induction condenser I, which is an embodiment of the present invention.
FIG. 2 is a structural diagram of the device, in which (A) is when the device is in use, and (B) is when it is not in use. FIG. 2 shows a state in which the primary transformer is assembled into a wall, that is, an external view of FIG. 1 (B). A primary coil 11 is wound around the primary core 10, and both ends of the winding of the coil are attached to commercial power input terminals 12 and connected to a commercial power source.

The secondary core 20 has a secondary coil 2! Both ends of the winding of the coil are connected to an output cord 25 and connected to electrical equipment (not shown). 10a is an exposed portion of the primary core 10, and 13 is a secondary case protrusion 22.
22 shows the recessed part a, and the secondary case 22, respectively.

Note that the same parts as in FIG. 8 are designated by the same reference numerals, and their explanations will be omitted.

When the electrical equipment is not in use, the secondary side part 5 is not connected to the primary side part P (FIG. 1(B), FIG. 2),
Although the exposed portion 10a of the primary core is exposed, the transformer does not generate voltage only at the primary side P, so it is safe and there is no risk of electric shock to the human body. Figure 1 (A
), when in use, the secondary case protrusion 22a of the transformer is press-fitted into the recess 13 to form a transformer. When commercial power input from the commercial power input terminal 12 flows to the primary coil 11, the primary coil 11 and the secondary coil 21 are electromagnetically coupled, and the number of turns of the coil is changed in the secondary coil 2X. It is possible to extract any voltage and supply power to electrical equipment.

Figure 4 shows the socket I-23 so that the plug can be inserted.
An example of an AC-AC adapter equipped with the following is shown. If the transformer has a winding ratio of 1:1 and the socket I in FIG. 4 is the same as a conventional outlet, it is possible to use electrical equipment with a conventional plug.

FIG. 5 shows an embodiment of the A, C-DC adapter.

By adding a rectifier circuit composed of a diode D1 and a capacitor C4, it is possible to obtain a DC output.

FIG. 6 shows an embodiment of the battery charger. By adding a constant current circuit composed of a diode D2 and a resistor R, it is possible to charge a NiCd battery.

In addition, if the structure is such that a conventional outlet I/plug 24 is provided on the primary side P as shown in Figure 3, it can be used with conventional electrical equipment, and the voltage on the primary side can be set to V5. The voltage of ■
2. If the number of turns of the primary coil is N, and the number of turns of the secondary coil is N2, the transformer I/lance is Vl/V2・Nl
/N2. Therefore, the voltage on the primary side ■1
Even if the voltage changes, by changing the number of turns of the primary coil, the secondary side and the electrical equipment connected to it can operate on the commercial power supply of 100V or 200V without changing the values of the circuit elements.
It is possible to use either system.

[Effects of the Invention] According to the above-mentioned electromagnetic induction outlet according to the present invention, there is no need for a transformer in the power supply section of electrical equipment as in the conventional example, and since any voltage can be obtained from the commercial power supply,
The power supply part can be downsized.

Furthermore, since the input voltage on the electrical equipment side can be lowered, circuit components with low withstand voltage can be used, making it possible to reduce the size, weight, and cost. It also has various advantages such as no risk of electric shock even when not in use.

[Brief explanation of drawings]

Figures 1 (A) and 1 (B) are a structural diagram of an electromagnetic induction outlet according to an embodiment of the present invention and an installation state diagram of the primary side of the electromagnetic induction outlet, and Figure 2 is a diagram of the installation state of the primary side of the electromagnetic induction outlet, and Figure 2 is a diagram of the structure of an electromagnetic induction outlet according to an embodiment of the present invention. ), and Figure 3 shows electromagnetic induction sockets 1 to 1 which are modified examples of the present invention.
FIG. 4 is a side view of the secondary side of an electromagnetic induction outlet with a socket, which is another modification of the present invention, and FIG. 5 is a secondary side of an electromagnetic induction outlet which is another modification of the present invention. FIG. 6 is a side view of a charger type secondary side of an electromagnetic induction outlet, which is another modification of the present invention, and FIG. 7 is a side view of a conventional wall-embedded outlet. The side view and FIG. 8 each show an external view of a wall-embedded outlet not shown in FIG. 7. DESCRIPTION OF SYMBOLS 1...Contact fitting, 2...Cover 3...Screw, 4...Plug socket, 5...Wall, 10...Primary side core, 10a...Primary side core Exposed part, 11...Primary side coil, 12...Commercial power input terminal, 13...Secondary side case mounting in four parts, 20...Secondary side core, 21...Secondary side coil , 22...Secondary side case, 22a...Secondary side case protrusion, 23...Socket, 24...Plug, 25...Output cord, D+, 'D2...Diode, CI ...
Capacitor, R...Resistor, P...Transformer primary side, S...Transformer secondary side. (A) Figure 1 Figure 1 (B)

Claims (1)

[Claims] A transformer is divided into a primary side that is connected to a commercial power source and a secondary side that is connected to electrical equipment, and an arbitrary voltage can be extracted from the commercial power source using electromagnetic induction. Features an electromagnetic induction outlet.