KR200407972Y1 - Power supply - Google Patents

Abstract

A power supply is disclosed. The power supply includes a plug, a first coil terminal, a second coil terminal, and a circuit board. The plug includes a first electrode and a second electrode for receiving AC power, and the first coil terminal has a coil shape inserted into and electrically connected to the first electrode, and the second coil terminal is electrically connected to the second electrode. It has a coil shape to be connected. The circuit board includes circuit components mounted to change an AC power source to a desired power source, and conductive patterns having one side electrically connected to the first and second coil terminals and the other side electrically connected to the circuit component.

Description

Power supply unit {POWER SUPPLY}

1 is an exploded perspective view illustrating a power supply device according to an embodiment of the present invention with a case removed.

2 is a cross-sectional view showing the first and second coil terminals according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line II ′ of FIG. 2.

4 is a perspective view illustrating a state in which a case is removed after assembling the power supply device shown in FIG.

FIG. 5 is a cross-sectional view taken along the line II-II ′ of FIG. 4.

6 is a cross-sectional view showing first and second coil terminals according to another exemplary embodiment of the present invention.

7 is a cross-sectional view illustrating first and second coil terminals according to still another exemplary embodiment of the present invention.

The present invention relates to a power supply. More specifically, the present invention relates to a power supply having a coil-shaped coil terminal for electrically connecting a plug provided with an external power source and a circuit board on which circuit components for processing the external power source are mounted.

In general, the power supply (pressure supply) is to reduce the pressure, boosting the power supplied from the outside, for example, AC power or DC power to suit the purpose of use. In addition, the power supply may change the DC power into AC power or change the AC power into DC power.

Such a power supply device includes a plug for electrically connecting an external power supply, for example, an outlet to which an AC power is applied, a circuit board on which a circuit component for processing an AC power applied through the plug is mounted, and And clip-shaped terminals that electrically connect the circuit board.

Clip-shaped terminals mounted on a conventional power supply device are manufactured by pressing a metal plate having excellent conductivity with a thin thickness into a predetermined shape by a press device to manufacture a metal piece, and additionally processing the pressed metal piece into a clip shape. .

Therefore, in order to manufacture the clip-shaped terminals mounted on the conventional power supply device, a manufacturing process for manufacturing the clip-shaped terminals is complicated by requiring a press working and a bending machine or the like.

In addition, the conventional clip-shaped terminals are separated from the wide metal plate by the press working, it is difficult to utilize all of the metal plate has a problem that the waste of the parent material is severe.

Embodiments of the present invention provide a power supply that has a simple manufacturing process and no waste of parent material, greatly reducing manufacturing costs and shortening manufacturing time and manufacturing processes.

In order to implement one object of the present invention, the power supply device according to the present invention includes a plug, a first coil terminal, a second coil terminal and a circuit board. The plug includes a first electrode and a second electrode for receiving AC power, and the first coil terminal has a coil shape inserted into and electrically connected to the first electrode, and the second coil terminal is electrically connected to the second electrode. It has a coil shape to be connected. The circuit board includes circuit components mounted to change an AC power source to a desired power source, and conductive patterns having one side electrically connected to the first and second coil terminals and the other side electrically connected to the circuit component.

Preferably, the circuit board further includes through holes for coupling with the first and second coil terminals, respectively. Preferably, some of the first and second coil terminals coupled to the through holes further include a fixing part bent to be inserted into the through holes.

Preferably, the portion of the first coil terminal wound in a coil shape has the same inner diameter. Preferably, the portion of the second coil terminal wound in a coil shape has the same diameter.

Preferably, the inner diameter of the coiled portion of the first and second coil terminals decreases gradually from the inlet of the first and second coil terminals into which the first and second electrodes are inserted to the outlet facing the inlet. .

Preferably, the inner diameter of the coiled portion of the first and second coil terminals is from the inlet of the first and second coil terminals into which the first and second electrodes are inserted to the center of the first and second coil terminals. Decreasing gradually increasing from the central portion toward the exit facing the inlet.

Optionally, the surfaces of the first and second coil terminals may include a plating layer coated with any one metal selected from the group consisting of gold, silver, nickel, tin, and chromium, and the thickness of the plating layer may be 2 μm to 5 μm. Can be.

Optionally, the first and second coil terminals may comprise nickel-chromium, piano wire, carbon steel, stainless steel, brass, phosphor bronze, beryllium copper wire.

Preferably, the circuit component may be a transformer for changing the level of AC power.

Preferably, one end of the first and second electrodes has a rod shape for coupling with the first and second coil terminals.

Hereinafter, a power supply apparatus according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments, and those skilled in the art. If it is possible to implement the present invention in various other forms without departing from the technical spirit of the present invention. In the accompanying drawings, the dimensions of the printed circuit board, circuit components, the first electrode, the second electrode, the first coil terminal, the second coil terminal or their structures are enlarged than actual for clarity of the present invention. It is shown. In the present invention, a printed circuit board, a circuit component, a first electrode, a second electrode, a first coil terminal, a second coil terminal or a structure thereof is formed "on", "upper" or "lower". When referred to as being meant to be formed on or below the printed circuit board, circuit components, the first electrode, the second electrode, the first coil terminal, the second coil terminals or their structures, or Other structures may be additionally formed in between. Also, a printed circuit board, a circuit component, a first electrode, a second electrode, a first coil terminal, a second coil terminal, or structures thereof may be referred to as "first", "second", "third", and / or " 4 "and the like, are not intended to limit these members, but merely to distinguish printed circuit boards, circuit components, first electrodes, second electrodes, first coil terminals, second coil terminals, or structures thereof. It is for. Thus, "first", "second", "third" and / or "fourth" may be used selectively or interchangeably for each structure.

Hereinafter, exemplary embodiments of the power supply apparatus according to the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view illustrating a power supply device according to an embodiment of the present invention with a case removed.

Referring to FIG. 1, the power supply device 100 includes a plug 10, a first coil terminal 20, a second coil terminal 30, and a circuit board 40. In addition, the power supply device 100 may further include a case (not shown) for accommodating the plug 10, the first and second coil terminals 20 and 30, and the circuit board 40.

The plug 10 comprises a first electrode 2, a second electrode 4 and a plug body 6.

The first electrode 2 and the second electrode 4 are each made of a metal having low electrical resistance, and the first electrode 2 and the second electrode 4 have a rod shape, for example. Can be. Alternatively, the first electrode 2 and the second electrode 4 may have a rod shape or a rectangular shape in addition to the rod shape. The first electrode 2 and the second electrode 4 are electrically connected to an outlet to which AC power is applied to transfer the AC power to the first and second coil terminals 30 and 40 to be described later.

The plug body 6 fixes the first electrode 2 and the second electrode 4 in the designated position. In this embodiment, the plug body 6 may be a synthetic resin, for example a plastic injection molded product having a high electrical resistance.

2 is a cross-sectional view showing the first and second coil terminals according to an embodiment of the present invention.

1 and 2, the first coil terminal 20 and the second coil terminal 30 are electrically connected to the first electrode 2 and the second electrode 4 of the plug 10, respectively. Specifically, the first coil terminal 20 is electrically connected to the first electrode 2 of the plug 10, and the second coil terminal 30 is electrically connected to the second electrode 4 of the plug 10. Connected.

The first coil terminal 20 and the second coil terminal 30 each have the same shape. In the present embodiment, the coil portion coupled to the first electrode 2 of the first coil terminal 20 has the same inner diameter, and the coil portion coupled to the second electrode 4 of the second coil terminal 30. It also has the same inner diameter. In this embodiment, the inner diameters of the first and second coil terminals 20 and 30 are preferably somewhat smaller than the diameters of the first and second electrodes 2 and 4.

 In this embodiment, the first and second coil terminals 20 and 30 are wound in a coil shape (or coil spring shape) with a conductive wire having a diameter of about 0.5 mm to about 0.7 mm, preferably about 0.6 mm. Can have In contrast, the first and second coil terminals 20 and 30 may have a shape in which a conductive wire having a diameter gradually decreased or a diameter of the first and second coil terminals 20 and 30 gradually increases is wound in a coil shape. Can have

In this embodiment, examples of the metal constituting the first coil terminal 20 and the second coil terminal 30 are iron, copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, nickel-chromium alloy, chromium, piano Wire, carbon steel, stainless steel, brass, phosphor bronze, beryllium copper wire, and the like. These may be used alone or in combination.

3 is a cross-sectional view taken along the line II ′ of FIG. 2.

Referring to FIG. 3, in order to improve the electrical connection of the first electrode 2 and the first coil terminal 20, the second electrode 4, and the second coil terminal 30, the first coil terminal 20 is provided. And the second coil terminal 30 may further include plating layers 25 and 35, respectively. As an example of the metal which comprises the plating layers 25 and 35, gold, silver, nickel, tin, chromium, etc. which are excellent in electrical conductivity and have high purity are mentioned. These may be used alone or in combination. In the present embodiment, the plating layers 25 and 35 formed on the surfaces of the first coil terminal 20 and the second coil terminal 30 include nickel.

The plating layers 25 and 35 may be formed on the first and second coil terminals 20 and 30 by various methods such as electroplating and electroless plating.

In the present embodiment, when the thickness of the plating layers 25 and 35 is about 1 μm or less, it is difficult to expect the improvement of the electrical characteristics by the plating layers 25 and 35, and when the thickness of the plating layers 25 and 35 is about 5 μm or more. It takes a long time to form the plating layers 25 and 35. Therefore, it is preferable that the thickness of the plating layers 25 and 35 which concerns on a present Example is about 1 micrometer-about 5 micrometers.

Meanwhile, the first coil terminal 20 and the first electrode 2 of the plug 10, the second coil terminal 30, and the second electrode 4 of the plug 10 according to the present embodiment may be electrically connected. In order to improve, the first coil terminal 20 and the second coil terminal 30 are preferably heat treated. In this embodiment, the first coil terminal 20 and the second coil terminal 30 are heat treated, for example, at a temperature of about 300 ° C. to about 330 ° C. for about 10 minutes to about 20 minutes, preferably about 15 minutes. It is desirable to.

Referring back to FIG. 2, the first coil terminal 20 coupled to the first electrode 2 of the plug 10 and the second coil terminal 30 coupled to the second electrode 4 of the plug 10. In order to couple to the circuit board 40 to be described later, at one end of the first coil terminal 20 and the second coil terminal 30, for example, a first fixing portion bent in a 'U' shape ( 26, 36 are formed, and the second fixing portion bent in a 'U' shape, for example, at the other end portion facing the one end portion of the first coil terminal 20 and the second coil terminal 30. 27,37) are formed.

At the ends of the first fixing parts 26 and 36, first bent parts 26a and 36a bent to be fixed to the surface of the circuit board 40 to be described later are formed, and the second fixing parts 27 and 37 are formed. Second bent portions 27a and 37a, which are partially bent, are formed at ends of the circuit board 40 to be fixed to the surface of the circuit board 40 to be described later. Preferably, the first bent portions 26a and 36a are bent in parallel with the surface of the circuit board 40, and the second bent portions 27a and 37a are also bent in parallel with the surface of the circuit board 40.

4 is a perspective view illustrating a state in which a case is removed after assembling the power supply device shown in FIG. FIG. 5 is a cross-sectional view taken along the line II-II ′ of FIG. 4.

4 and 5, the circuit board 40 includes a conductive pattern 46 and a circuit component 45.

The circuit component 45 is mounted on the circuit board 40 and changes an externally applied power source, for example, an AC power source, into a desired power source. In this embodiment, examples of the circuit component 25 may vary from a DC / AC converter for changing an AC power source to a DC power source, a transformer for boosting or reducing the AC power source, a transistor, a diode, a capacitor, a resistor, and the like. These may be used alone or in combination.

The conductive pattern 46 is formed on the circuit board 40, and one end of the conductive pattern 46 is electrically connected to the circuit component 35, and, for example, faces one end of the conductive pattern 46. The other end is electrically connected to the first fixing parts 26 and 36 and / or the second fixing parts 27 and 37 of the first and second coil terminals 20 and 30 described above.

Specifically, through-holes 42 are formed in the circuit board 40 to accommodate the first fixing parts 26 and 36 and the second fixing parts 27 and 37, and the agent inserted into the through-holes 42 is formed. The first fixing parts 26 and 36 and the second fixing parts 27 and 37 are electrically connected to the conductive pattern 46. In the present embodiment, the conductive pattern 46, the first fixing parts 26 and 36 and the second fixing parts 27 and 37 are soldered by solder.

After the first and second coil terminals 20 and 30 are electrically connected to the first and second electrodes 2 and 4 of the plug 10, the plug 10, the first and second coil terminals ( 20 and 30 and circuit board 40 are coupled to a case (not shown).

6 is a cross-sectional view showing first and second coil terminals according to another exemplary embodiment of the present invention.

Referring to FIG. 6, an inner diameter of a coiled portion of the first and second coil terminals 20 and 30 may include a first in which the first and second electrodes 2 and 4 of the plug 10 are inserted. And gradually decrease from the inlets 20a and 30a of the second coil terminals 20 and 30 to the outlets 20b and 30b facing the inlets 20a and 30a. Therefore, the electrical connection between the first and second coil terminals 20 and 30 and the first and second electrodes 2 and 4 can be further improved.

7 is a cross-sectional view illustrating first and second coil terminals according to still another exemplary embodiment of the present invention.

Referring to FIG. 7, an inner diameter of a coiled portion of the first and second coil terminals 20 and 30 may include a first in which the first and second electrodes 2 and 4 of the plug 10 are inserted. And from the inlets 20c and 30c of the second coil terminals 20 and 30 toward the central portion of the first and second coil terminals 20 and 30 and from the center portion to the outlet 20d facing the inlets 20c and 30c. 30d) gradually increases in shape. Accordingly, the first and second coil terminals 20 and 30 may be made easier as well as the coupling of the first and second coil terminals 20 and 30 and the first and second electrodes 2 and 4 may be easier. And electrical characteristics of the first and second electrodes 2 and 4 can be improved.

As described in detail above, the plug and circuit board included in the power supply are electrically connected to each other by a coil-shaped terminal, thereby greatly reducing the manufacturing cost by reducing the number of assembly and manufacturing processes of the power supply. In addition, the electrical characteristics of the power supply can also be improved.

In the detailed description of the present invention described above with reference to a preferred embodiment of the present invention, the present invention described in the utility model registration claims to be described later those skilled in the art or those skilled in the art It will be understood that various modifications and changes of the present invention can be made without departing from the spirit and scope of the invention.

Claims (10)

A plug including a first electrode and a second electrode for receiving AC power; A first coil terminal having a coil shape fitted to the first electrode and electrically connected to the first electrode; A second coil terminal having a coil shape to which the second electrode is inserted and electrically connected; And A circuit board mounted to change the AC power source to a desired power source and a circuit board including conductive patterns on one side of which are electrically connected to the first and second coil terminals, and on the other side of which are electrically connected to the circuit component, respectively. Power supply comprising a. 2. The circuit board of claim 1, wherein the circuit board further comprises through holes for coupling with the first and second coil terminals, respectively, wherein a part of the first and second coil terminals coupled with the through holes are formed in the circuit board. And a fixing part bent to be inserted into the through holes. The power supply apparatus according to claim 1, wherein a portion of the first coil terminal wound in a coil shape has the same inner diameter, and a portion of the second coil terminal wound in a coil shape has the same diameter. The inner diameter of a portion of the first and second coil terminals wound in a coil shape faces the inlet from an inlet of the first and second coil terminals into which the first and second electrodes are inserted. Power supply characterized in that it gradually decreases toward the viewing exit. The inner diameter of the coiled portion of the first and second coil terminals is the first and second coil terminals from the inlet of the first and second coil terminals into which the first and second electrodes are inserted. And decreases toward the center of the second coil terminals and increases gradually from the center to the outlet facing the inlet. The power supply device according to claim 1, wherein the surfaces of the first and second coil terminals include a plating layer plated with any one metal selected from the group consisting of gold, silver, nickel, tin, and chromium. The power supply apparatus of claim 6, wherein the plating layer has a thickness of 2 μm to 5 μm. The method of claim 1, wherein the first and the second coil terminal comprises any one metal selected from the group consisting of nickel-chromium, piano wire, carbon steel, stainless steel, brass, phosphor bronze, beryllium copper wire. Power supply. The power supply apparatus according to claim 1, wherein said circuit component is a transformer for changing the level of said AC power supply. The power supply of claim 1, wherein one end of the first and second electrodes has a rod shape to couple with the first and second coil terminals.

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