JPS63187607A - Power transmission apparatus - Google Patents

Abstract

PURPOSE:To eliminate the need of providing a plug to a power supplied section, by adapting the apparatus such that a core of a power supply section together with each core of several power supplied sections forms a closed magnetic path passing through the primary winding of the power supply section and the secondary winding of the power supplied section. CONSTITUTION:A power supply section (a) consists of a AC power supply circuit 3, a primary winding 1 connected to an output terminal of the AC power supply circuit 3, and a first core 2 on which said primary winding 1 is wound through a coil bobbin 4. The first core 2 comprises two rectangular facing surfaces 2a and a section 2b on which the primary winding 1 is to be wound. A power supplied section (b) consists of a secondary winding 5 connected to a load (c) and a second core 6 on which said secondary winding 5 is wound through a coil bobbin 7. The second core 6 comprises facing surfaces 6a closed to or contacted with the facing surfaces 2a of the first core 2, and a section 6b on which the secondary winding 2 is to be wound. According to such constitution, power can be transmitted to the load (c) only by bringing the power supplied section (b) integrated with the load (c) into close vicinity to or into contact with the power supply section (a) and, thus, it is possible to avoid cumbersome operations such as insertion of a plug or the like before use of the load (c).

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables a power transmission device, particularly a power supply side and a load side, to be mechanically separated and removed very easily, and also improves the appearance of the device. The present invention relates to an economical power transmission device capable of transmitting power to a plurality of small loads.

[Conventional technology]

Conventionally, power has been supplied to various electric and electronic devices such as portable rechargeable single-child devices such as electric beard trimmers and electric water heaters by plugging the device's AC plug into a power outlet or by connecting an AC adapter. This was done by plugging the DC plug provided on the AC adapter into the input terminal provided on the device. It was extremely bothersome.

In addition, for example, in the case of an electric water heater, when the user lifts the water heater and pours the hot water inside, the power cord is also lifted along with the plug, causing inconveniences such as the power cord getting in the way.

Furthermore, the device has the disadvantage that it is unsightly because the plug protrudes and a hole for inserting the plug is required.

[Problem that the invention seeks to solve]

The present invention has been made in view of the above-mentioned prior art, and it is possible to mechanically separate the power supply side and the load side very easily without providing a plug or the like on the load side, and it is possible to mechanically separate the power supply side and the load side, and it is possible to easily separate the power supply side and the load side. It is an object of the present invention to provide a power transmission device that does not require any trouble when supplying power to an electric/electronic device and can also improve the appearance of the electric/electronic device. Furthermore, the present invention can also transfer power to multiple loads simultaneously,
Moreover, it is an attempt to provide an economical power transmission device.

[Means for solving problems]

In order to solve the above problems, the present invention provides a power supply unit including a first core wound with a primary winding to which an AC voltage is input, and a secondary winding connected to a load. and a power receiving part that is separated from the power supply part and integrated with the load, and when the power supply part and the power reception part are brought close to each other or in contact with each other. The core 1 and the cores 1 and 2 are connected to the primary winding and the core 2.
The structure is such that a closed magnetic path passing through the next winding is formed. Further, even when the power receiving sections provided for each of a plurality of loads are simultaneously brought close to or fused to the power supply section, the first core of the power supply section and the second core of each power receiving section The area of the opposing surface of the core of the second core is such that the core forms a closed magnetic path passing through the primary winding of the power supply section and the secondary winding of each power reception section. The area is larger than that of the opposing surface.

[For production]

According to the present invention, when the power supply section and the power reception section are brought close to each other or in contact with each other, the core of the spear and the second core form a closed magnetic path passing through the primary winding and the secondary winding. These have the same function as a transformer.

Therefore, the power supplied to the primary winding is transmitted to the secondary winding and supplied to the load.

As described above, according to the present invention, the load Kt force can be transmitted simply by bringing the power supply section and the power reception section integrated with the load into close proximity or in contact with each other. When using electronic equipment, there is no need to worry about plugging in the plug each time as in the past, making it extremely convenient.

Furthermore, since there is no need to provide a plug or a plug insertion hole for the electrical/electronic equipment that is the load, the appearance is improved.

Further, according to the present invention, even when the power receiving sections provided in each of a plurality of loads are brought close to or in contact with the power supply section at the same time, the core of the fang of the power supply section and each power receiving section The areas of the facing surfaces of the cores of 1'l are such that the second cores of the sections form closed magnetic paths passing through the primary winding of the power supply section and the secondary windings of each power receiving section. 6.Since the area of the opposing surface of the second core is larger than that of the opposing surface of the second core, when each of the power receiving sections is brought into contact with or close to the power supply section at the same time, the first core and the primary winding of the power supply section By using a common wire, these and the second core and secondary winding of each power receiving section each perform the same function as a transformer.

Therefore, the power supplied to the primary winding of the power supply section is transmitted to each power reception section, and is supplied to each of the plurality of loads. According to the present invention, the power supply section is shared, and there is no need to prepare a number of power supply sections corresponding to the number of loads, that is, the number of power receiving sections, which is economical.

〔Example〕

The present invention will be described below based on embodiments shown in the drawings.

In FIG. 1, (α) is a power supply section, (A) is a power reception section, and (C) is various electrical and electronic devices as loads.

In the present invention, the power supply section (a) is configured to include a first core (2) around which a primary winding (1) to which an alternating current voltage is input is wound.

In the case of the embodiment shown in FIG. 1, the power supply section (α) is provided with an AC power supply circuit (3) that outputs an AC voltage, and the primary winding (1) is connected to its output terminal. has been done. Although various alternating current voltages can be input to the primary winding m<1), it is desirable to input a high frequency 'B voltage of about 30 KH2 to 100 KH2. This is because advantages such as being able to reduce the number of turns of the winding wire can be obtained. Note that (4) in the figure is a coil bobbin.

Moreover, the power receiving part (b) is configured to include a second core (6>) around which a secondary winding (5) connected to the load (C) is wound, and the power receiving part (b) is connected to the power supply part (α). is separated and the above load (C
).

In the present invention, when the power supply part (α) and the power reception part (6) are brought into close proximity or in contact with each other, the core (2) of the above-1 and the second core (6) The structure is such that a closed magnetic path passing through the winding (1) and the secondary winding (5) is formed. Note that (7) in the figure is a coil bobbin.

In the case of the embodiment shown in Figure 2.1, the first core (2) is arranged such that the surface (2a) facing the second core (6) is exposed on the outer surface of the casing of the power supply unit (α). The core of Sai2 is also placed (
6) is arranged so that the surface (6a) facing the core (2) of the fang l is exposed on the outer surface of the power receiving part (A), and is integrated with the load (C) ((the installed power receiving part) By placing part (A) on the power supply part (-), the core (2) of blade 1
The second core (6) forms a closed magnetic path passing through the primary winding m (1) and the secondary winding (5). However, Oni's core (2) and second core (6)
are arranged so that the opposing surfaces (2α) and (6α) of the first core (2) and (6α) are located near the outer surface of each housing, and the first core (2) and :A-
The first core (2) and the second core (6) through the gap between each opposing surface (2α) and (6a) of the second core (6)
A closed magnetic path passing through the primary winding m(1) and the secondary winding (5) may be formed. In that case, in order to reduce the magnetic resistance due to the gap and reduce the magnetic resistance of the closed magnetic circuit as a whole, the opposing surfaces (2a) of the core (2) and the second core (6) of 〕as well as(
The area of the spear) is the cross-sectional area of the part (2b) where the primary winding (1) of the core (2) of the spear is wound, and the core (6) of j.
It is desirable that the cross-sectional area of the secondary winding (5) is larger than that of the wound portion (6b). In the case of the 1-size/1-figure embodiment, the opposing surfaces (2a) and (2h) of the first core (2) and second core (6) as described above are placed on the outside of each casing. Although directly exposed, a j.1 magnetic body and a second magnetic body are integrally provided in each case so as to be exposed on the inside and outside thereof, and further the first magnetic body and the second magnetic body are 1-1 core (2) and second core (6) inside the body
) are in contact with the opposing surfaces (2α) and (6α), respectively,
The first core (2) and the second core (6) pass through the primary winding (1) and the secondary winding (5) via the first central body and the magnetic body of 2. Alternatively, a closed magnetic path may be formed.

Furthermore, in the present invention, even when the power receiving section (b) provided in each of the plurality of loads (C) is brought close to or in contact with the force supplying section (a) at the same time, the power supplying section (
−) of the first core (2) and the second core of each power receiving part (φ)
The core (6) is the primary winding (1) of the power supply section (a).
and the first core (2) so as to form a closed magnetic path passing through the secondary winding (5) of each power receiving section (6).
The area of the opposing surface (2α) of the second core (6) is made larger than the area of the opposing surface (6α) of the second core (6).

In the case of the drawing example, the core (2) of 211 is configured in the shape shown in the second figure, and its opposing surface (2α) is configured in a large rectangular shape, and the core (6) of j.2 is simply approximately U-shaped. It is configured as follows. Figure 3 shows the above-mentioned ■Force receiving part (b)
Figure 4 is a plan view of the power supply section (b).

Note that the shapes of the circumferential core (2) and the second core (6) are not limited, and the power receiving portions (A) provided in each of the plurality of loads (C) can be simultaneously connected to the power receiving portions (A). Even when brought close to or in contact with the power supply section (a), the core (2) of the power supply section (α) and each power reception section (')
The second core (6) of the power supply unit (α) has a shape that forms a closed magnetic path passing through the primary winding (1) of the power supply unit (α) and the secondary winding (2) of each power reception unit (2). All you have to do is do it.

Further, the first core (2) and the second core (6) are
In order to reduce eddy current loss, it is desirable to use a ferrite core.

Note that measures such as providing a positioning protrusion may be taken to prevent positional deviation between the power supply section (α) and the power reception section (A).

According to the present invention having the above configuration, the first core (2) and the second core (6) are connected to the primary winding by bringing the power supply section (a) and the power reception section (A) close to each other or in contact with each other. Since a closed magnetic path passing through the wire (1) and the secondary winding (5) is formed, these act in the same way as a transformer.

Therefore, the power supplied to the primary winding (5) is transmitted to the secondary winding (5) and supplied to the load (C). A circuit is provided.

As described above, according to the present invention, power can be transmitted to the load (C) simply by bringing the power supply section (a) and the power reception section ψ) provided integrally with the load (6) close to each other or in contact with each other. Therefore, it is extremely convenient to use various electrical and electronic devices as loads (C) without the hassle of plugging them in each time as in the conventional case.

Furthermore, since there is no need to provide a plug insertion hole in the electrical/electronic item serving as the load (C), the appearance is improved.

Furthermore, according to the present invention, even when the power receiving section (A) provided for each of the plurality of loads (C) is brought close to or in contact with the power supply section (α) at the same time, the power supply section (α) core (2) and each power receiver (the second core (6) of the power supply unit (α) is the primary winding (1) of the power supply unit (α)
) and the secondary winding (5) of each power receiving part (A), respectively, to form a closed magnetic path passing through the core (2
) is configured to have a larger area than the opposing surface (6α) of each second core (6), so that each of the power receiving sections (A) and the power supplying section (α) are connected to each other at the same time. When the power supply part (a) is brought into contact with or near the core (
2) and the primary winding (with a common base, these and the second core (6) and secondary winding (5) of each power receiving section (6) each perform the same function as a transformer. It is.

Therefore, the power supplied to the primary winding (1) of the power supply section (α) is transmitted to each power reception section (A), and is supplied to each of the plurality of loads (C).

According to the present invention, the power supply section (α) is shared, and the number of loads (C), that is, the power reception section (
It is economical because there is no need to prepare a number of power supply units (α) corresponding to the number of b).

〔Effect of the invention〕

According to the present invention, it is possible to mechanically separate the power supply side and the load side very easily without providing a plug or the like on the load side, which saves time and effort when supplying power to various electrical and electronic devices as loads. This makes it easier to use the electrical/electronic equipment, improves the appearance of the electrical/electronic equipment, and allows power to be transmitted to multiple loads at the same time. This provides an economical effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a configuration diagram, Fig. 2 is a perspective view of the second core, Fig. 3 is a perspective view showing the state of use, and Fig. 4 is a power supply diagram. It is a top view of a supply part. (1)...Primary winding, (2)...First core, (5
)...Secondary winding, (6)...Blade/2 core, (α)
...Power supply, part, ψ) ...Power receiving part, (C)
··load.

Claims (1)

[Claims] A power supply unit including a first core wound with a primary winding to which an AC voltage is input, and a second core wound with a secondary winding connected to a load. The first core includes a core and a power receiving part that is separated from the power supply part and integrally provided to the load, and when the power supply part and the power reception part are brought close to each other or in contact with each other, the first core and a power transmission device in which a second core forms a closed magnetic path passing through the primary winding and the secondary winding, wherein the power receiving section provided for each of the plurality of loads is simultaneously brought close to the power supply section. Or even when brought into contact, the first core of the power supply section and the second core of each power reception section penetrate the primary winding of the power supply section and the secondary winding of each power reception section. A power transmission device characterized in that the area of the opposing surfaces of the first cores is larger than the area of the opposing surfaces of each of the second cores so as to form closed magnetic paths.