KR102262614B1 - A Transformer with built-in primary and secondary coil elements - Google Patents

Abstract

The present invention relates to a transformer with built-in primary and secondary coil elements. According to the present invention, the transformer comprises: a casing (Ca) including a casing body (310) having a seating space (S1) formed therein and a cover (320) detachably fastened to the casing body (310) to open and close the seating space (S1) of the casing body (310); a plate-shaped primary coil element (100) inserted into the seating space (S1) of the casing body (310); and a secondary coil element (200) in contact with the primary coil element (100), inserted into the seating space (S1) of the casing body (310), and generating an induced current by the current applied to the primary coil element (100). The secondary coil element (200) and the primary coil element (100) are simultaneously loaded in the seating space (S1) of the casing body (310) closed by the cover (320). Accordingly, the coupling efficiency is improved, the thickness of the transformer can be made thin, and insulation characteristics are improved.

Description

Transformer with built-in primary and secondary coil elements

The present invention relates to a transformer for a charger or SMPS, and more particularly, to a transformer with primary and secondary side coil elements simultaneously built-in suitable for improving coupling efficiency, making the thickness of the transformer thin, and improving insulation characteristics. .

In general, a transformer has a primary coil and a secondary coil, and in general, the primary coil is used as an input terminal and the secondary coil is used as an output terminal.

Among the transformers, a small transformer used in a mobile phone charger uses a coil wound with a triple insulated wire as a coil (particularly, it is used as a secondary coil).

However, the coil wound with the triple insulated wire has difficulties in mass production, such as the need to peel the wire directly by a person, and there was a problem with a high defect rate because the triple insulated wire was not wound evenly. As a coil that has solved some problems, there is a coil printed on a printed circuit board (PCB). This printed circuit board coil is easy to mass-produce, but due to its narrow cross-sectional area, the current capacity is low and heat is severe. There was a problem.

The technology proposed to solve this problem is "a transformer is disclosed by No. 10-1579427 (announcement date: December 22, 2015).

The technique according to No. 10-1579427 above forms a secondary coil of a transformer by insert molding a metal press, and inserts a PCB board, which is a primary coil element, in which a coil is stacked between a pair of secondary coils. It is a technology that has

However, the prior art as described above has the following problems.

The technology according to No. 10-1579427 formalizes the shape of the metal sheet by press punching and bending, and then fixes the shape of the coil by primary insert injection and increases durability by secondary insert injection molding again. A coil molded product (secondary coil element) was manufactured, and the primary coil was manufactured in the form of a PCB, and a transformer was manufactured by stacking them, respectively, so that heat generation due to the low cross-sectional area of the primary coil PCB and the difference between the primary and secondary coils There was a problem that the efficiency was not good because the gap was large.

Document 1: Registered Patent Publication No. 10-1579427 (Announcement date: December 22, 2015) Document 2: Laid-Open Patent Publication No. 10-2016-0041837 (published date: April 18, 2016)

The present invention has been created to solve the problems of the prior art as described above, and the purpose of the primary and secondary side coil element simultaneous built-in transformer according to the present invention is,

First, since the primary side coil element and the secondary side coil element are in contact with each other and charged in one casing, the space occupied by the primary and secondary side coil elements is reduced to realize miniaturization of the transformer product, and also the primary coil The gap between the element and the secondary coil element is narrowed so that the thickness of the transformer becomes thinner, so that the product can be slimmed down.

Second, the distance between the primary side coil element and the secondary side coil element is narrowed, so that the magnetic coupling force between the primary side coil element and the secondary side coil element can be increased, so that the coupling efficiency can be improved,

Third, by simultaneously charging the primary side coil element and the secondary side coil element in one casing, the assembly workability of transformer products is improved and productivity can be improved,

Fourth, the insulation from the outside can be improved by charging the primary side coil element and the secondary side coil element into the casing,

Fifth, by adopting the casing as a configuration for fastening the primary and secondary coil elements, the impregnating liquid (insulating liquid) can be injected into the casing, so that the primary and secondary coil elements embedded in the casing are impregnated with the insulating liquid. make it possible,

Sixth, by the configuration in which the cover is fastened to the casing body to press the primary and secondary coil elements, it can be closely pressed or compressed without a gap or lift between the primary coil element and the secondary coil element, thereby making the thickness of the product even thinner. and to improve bonding strength,

Seventh, by adopting the triple insulated coil or quadruple insulated coil as the secondary side coil element, it is possible to reduce the cost of the product compared to the conventional press-molding type coil element,

Eighth, even if a triple insulated coil or quadruple insulated coil is adopted as the secondary side coil element, by charging all of these triple insulated coil or quadruple insulated coil and the primary coil element in the casing, there is no need to adopt a separate fastening member, so assembly workability and to improve productivity,

Ninth, by sequentially stacking the secondary-side first coil element, the primary-side coil element and the secondary-side second coil element in the order, the insulation between the secondary-side first coil element and the lower magnetic core is improved, To improve the insulation between the secondary side second coil element and the upper magnetic core,

Tenth, by inserting the primary and secondary coil elements between the inner guide and the outer guide at the same time and holding them, the primary and secondary coil elements can be stably and firmly inserted into the casing without any gap or flow by a simple configuration,

Eleventh, by connecting the wires of the main air-core coil part and the auxiliary coil part to the primary terminal pin through the wire passage groove, respectively, it is possible to prevent contact or short circuit between the wires, and to make the wiring work easy and convenient. (Improve wiring workability),

Twelfth, the wire of the main air core coil part and the wire of the auxiliary coil part can be safely connected without contacting each other while being spaced apart,

Thirteenth, the wires of the main air-core coil part or the wires of the auxiliary coil part are spaced apart so that they can be safely connected without contact with each other,

Fourteenth, the cover and the casing body can be securely fastened by a configuration in which both are fastened simultaneously from the front and rear sides, and in particular, the rear fastening protrusion is sequentially stacked in the vertical direction by the configuration in which the rear fastening protrusion is fastened to the rear fitting hole in the front and rear directions. , to ensure that the gap or flow of the secondary side coil element is secured,

Fifteenth, by adopting a method of elastically and hooking the cover to the casing body, simply lowering the front fastening protrusion allows the hook to be clicked and elastically fastened, and thus conveniently, quickly and securely to be able to contract,

Sixteenth, the manufacturing cost of the product can be reduced by using the wire through groove as a guide groove for wiring and also as a fastening groove at the same time.

Seventeenth, by filling the inside of the casing with an impregnating liquid (insulating liquid) and curing it, the primary and secondary side coil elements can be integrated into the casing, and at the same time, due to the vibration of the coil element during operation due to the application of current It is to provide a transformer with built-in primary and secondary coil elements at the same time suitable to prevent noise and to further improve insulation characteristics.

In order to achieve the above object, the present invention's primary and secondary side coil element simultaneous built-in transformer includes a casing body having a seating space formed therein, and a cover detachably fastened to the casing body to open and close the seating space of the casing body. A casing configured as follows, a flat primary coil element inserted into the seating space of the casing body, and a current applied to the primary coil element by being in contact with the primary coil element and being inserted into the seating space of the casing body is configured to include a secondary side coil element generating an induced current by the , and the secondary side coil element and the primary side coil element are simultaneously charged in the seating space of the casing body closed by the cover.

The present invention, the primary and secondary side coil element simultaneous built-in transformer having the above configuration has the following effects.

First, since the primary side coil element and the secondary side coil element are in contact with each other and are charged in one casing, the space occupied by the primary and secondary side coil elements becomes smaller, so that miniaturization of the transformer product can be realized, and also the primary side coil Since the gap between the element and the secondary coil element is narrowed, the thickness of the transformer is reduced, which has the effect of realizing slimming of the product.

Second, since the distance between the primary side coil element and the secondary side coil element is narrowed, the magnetic coupling force between the primary side coil element and the secondary side coil element is increased, so that coupling efficiency can be improved.

Third, there is an effect that the assembly workability of the transformer product can be improved and productivity can be improved by simultaneously charging the primary side coil element and the secondary side coil element in one casing.

Fourth, there is an effect that insulation from the outside can be improved by charging the primary side coil element and the secondary side coil element in the casing.

Fifth, by adopting the casing as a configuration for fastening the primary and secondary coil elements, the impregnating liquid (insulating liquid) can be injected into the casing, so that the primary and secondary coil elements embedded in the casing are impregnated with the insulating liquid. There is an effect that can be done.

Sixth, by the configuration in which the cover is fastened to the casing body to press the primary and secondary coil elements, it can be closely pressed or compressed without a gap or lift between the primary coil element and the secondary coil element, thereby making the thickness of the product even thinner. There is an effect that the bonding strength can be further improved.

Seventh, by adopting the triple insulated coil or quadruple insulated coil as the secondary side coil element, there is an effect of reducing the cost of the product compared to the conventional press-molding type coil element.

Eighth, even if a triple insulated coil or quadruple insulated coil is adopted as the secondary side coil element, by charging all of these triple insulated coil or quadruple insulated coil and the primary coil element in the casing, there is no need to adopt a separate fastening member, so assembly workability And there is an effect that productivity can be improved.

Ninth, by sequentially stacking the secondary-side first coil element, the primary-side coil element and the secondary-side second coil element in the order, the insulation between the secondary-side first coil element and the lower magnetic core is improved, There is an effect that insulation between the secondary-side second coil element and the upper magnetic core can be improved.

Tenth, by holding the primary and secondary coil elements between the inner guide and the outer guide at the same time, the effect of stably and firmly charging the primary and secondary coil elements into the casing without gap or flow by a simple configuration have.

Eleventh, by connecting the wires of the main air-core coil part and the auxiliary coil part to the primary terminal pin through the wire passage groove, respectively, it is possible to prevent contact or short circuit between the wires, and to make the wiring work easy and convenient. effective (improving wiring workability).

Twelfth, there is an effect that the wire of the main air-core coil part and the wire of the auxiliary coil part can be safely connected without contact with each other while being spaced apart.

Thirteenth, there is an effect that can be safely connected without contact between the wires of the main air-core coil part or the wires of the auxiliary coil part are spaced apart from each other.

Fourteenth, the cover and the casing body can be securely fastened by a configuration in which both are fastened simultaneously from the front and rear sides, and in particular, the rear fastening protrusion is sequentially stacked in the vertical direction by the configuration in which the rear fastening protrusion is fastened to the rear fitting hole in the front and rear directions. , there is an effect that can reliably hold the gap or flow of the secondary side coil element.

Fifteenth, by adopting a method in which the cover is elastically and hooked to the casing body, the hook can be elastically hooked with a click by simply lowering the front fastening protrusion, as a result, conveniently, quickly and securely. It has the effect of binding.

Sixteenth, there is an effect of reducing the manufacturing cost of the product by allowing the wire passing groove to be used as a guide groove for wiring and also as a fastening groove at the same time.

Seventeenth, by filling the inside of the casing with an impregnating liquid (insulating liquid) and curing it, the primary and secondary side coil elements can be integrated into the casing, and at the same time, noise caused by vibration of the coil element during operation due to the application of current can be prevented, and there is an effect that can further improve the insulation properties.

1 is a perspective view of a transformer (A) built-in simultaneous primary and secondary coil elements according to an embodiment of the present invention.
2 is an exploded perspective view of a transformer (A) with built-in primary and secondary coil elements simultaneously according to an embodiment of the present invention.
3 is a secondary-side first coil element 210, a primary-side coil element 100 and a secondary-side second coil element in the transformer (A) with built-in primary and secondary coil elements according to an embodiment of the present invention. As a perspective view of a casing (Ca) in which 220 is sequentially stacked, FIG. 3 (a) is a rear perspective view, and FIG. 3 (b) is a front perspective view.
4 is an exploded perspective view of the primary side coil element 100 in the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention.
5 is a perspective view of the casing (Ca) in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, (a) of FIG. 5 is a perspective view of the cover 320, FIG. 5 (b) is a perspective view of the casing body 310 .
6 is a bottom perspective view of the casing (Ca) in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, Figure 6 (a) is a bottom perspective view of the cover (320) , (b) of FIG. 6 is a bottom perspective view of the casing body 310 .
7 is a primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, the wire 110k of the main coil part and the wire 130k of the auxiliary coil part are wire through grooves 332a, 332b) is an example diagram showing the state in which the connection is made.

Hereinafter, a preferred embodiment of the present invention of the primary and secondary side coil element simultaneous built-in transformer will be described in detail with reference to the accompanying drawings.

The primary and secondary side coil element simultaneous built-in transformer according to the present invention is a flat-panel transformer, and relates to a flat-panel transformer for a charger for a portable terminal or tablet computer.

The primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention includes a casing body 310 having a seating space S1 formed thereon, and a seating space S1 of the casing body 310 from above. A casing (Ca) comprising a cover 320 that is detachably fastened to the casing body 310 to open and close, and inserted into the seating space S1 of the casing body 310, a finished product (eg, a charger) ) when a driving current is applied from the main board of the primary side coil element 100 on a flat plate for generating an induced current in the secondary side coil element 200, and the primary side coil element 100 in contact with the casing body ( 310) is inserted into the seating space S1, and is configured to include a secondary-side coil element 200 in which an induced current is generated by a current applied to the primary-side coil element 100, and the secondary-side coil element (200) and the primary coil element (100) are characterized in that they are simultaneously charged in the seating space (S1) of the casing body (310) closed by the cover (320).

In this way, by providing the primary coil element 100 and the secondary coil element 200 in close contact with each other in one casing Ca, the space occupied by the primary and secondary coil elements 100 and 200 is reduced, and the primary side Since the interval between the coil element 100 and the secondary coil element 200 is narrowed, the thickness of the entire transformer A is reduced, so that the product can be slimmed down.

In addition, since the gap between the primary side coil element 100 and the secondary side coil element 200 is narrowed, there is also an advantage in that the coupling force is improved.

In addition, since the primary side coil element 100 and the secondary side coil element are simultaneously charged in one casing (Ca), there is an advantage in that the assembly workability of the transformer product is improved and productivity is improved.

In addition, since the primary side coil element 100 and the secondary side coil element are charged in the casing (Ca), there is an advantage in that insulation from the outside is improved.

In addition, the impregnating liquid (insulating liquid) can be injected into the casing Ca, so that the primary and secondary coil elements 100 and 200 embedded in the casing Ca can be configured to be impregnated.

In the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, the primary side coil element 100 and the secondary side coil element 200 are charged in close contact with each other, the cover Reference numeral 320 is characterized in that it is detachably fastened to the casing body 310 so as to simultaneously press [pressurize] the primary side coil element 100 and the secondary side coil element 200 downward.

As described above, since the cover 320 presses the primary and secondary coil elements 100 and 200, the primary coil element 100 and the secondary coil element 200 can be closely adhered or compressed without a gap or lifted, thereby becoming thinner and thinner. It has the advantage of improving characteristics.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the secondary coil element 200 includes a triple insulated coil in which a triple insulated wire is spirally wound. It is characterized in that it consists of an insulated winding wire or that it consists of a quadruple insulated winding wire in which a quadruple insulated wire is spirally wound.

Hereinafter, triple insulated wire and quadruple insulated wire are simply referred to as "triple insulated wire", and triple insulated coil and quadruple insulated coil are simply referred to as "triple insulated coil".

As described above, since the triple insulated coil or quadruple insulated coil is adopted as the secondary side coil device, there is an advantage in that the cost of the product is significantly reduced compared to the conventional press-molded coil device.

In addition, even if a triple insulated coil or quadruple insulated coil is adopted as the secondary side coil element, since all of these triple insulated coil or quadruple insulated coil and the primary side coil element are charged in the casing, there is no need to adopt a separate fastening member, so assembling workability and There is an advantage in that productivity is improved.

Here, the secondary-side coil element 200 is in contact with one surface (eg, a lower surface in the drawing) of the primary-side coil element 100 and is inserted into the seating space S1 and is provided as a secondary-side first coil element ( 210) and the secondary-side second coil element 220 which is inserted into the seating space S1 by being in contact with the other surface (eg, the upper surface in the drawing) of the primary side coil element 100, The secondary-side first coil element 210 , the primary-side coil element 100 and the secondary-side second coil element 220 are sequentially stacked and embedded in a casing Ca.

On the other hand, the secondary-side first coil element 210 and the secondary-side second coil element 220 may be connected in parallel or may be connected in series, and in any case, it falls within the technical scope of the present invention. .

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the secondary-side first coil element 210 is one surface of the primary-side coil element 100 (for example, referring to the drawings) is in contact with the lower surface) and is inserted into the seating space (S1), and is composed of a triple insulated coil or triple insulated coil wound spirally of a triple insulated wire or a quadruple insulated wire, and the secondary side second coil element 220 is provided to be inserted into the seating space S1 by being in contact with the other surface (eg, the upper surface in reference to the drawing) of the primary side coil element 100, and a triple insulated coil or a triple insulated coil wound in a spiral shape with a triple insulated wire or a quadruple insulated wire or Consisting of a triple insulated coil, the secondary side first coil element 210 of the triple insulated coil or quadruple insulated coil, the primary side coil element 100 and the secondary side of the triple insulated coil or quadruple insulated coil second coil element 220 ) are sequentially stacked and built into the casing (Ca).

As described above, since the secondary-side first coil element 210, the primary-side coil element 100 and the secondary-side second coil element 220 are sequentially stacked inside the casing (Ca), in particular, the secondary-side first coil There are advantages in that the insulation between the element 210 and the lower magnetic core 410 is improved, and the insulation between the secondary-side second coil element 220 and the upper magnetic core 420 is improved.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the primary coil element 100 has a first air core 110a formed in the center and is electrically conductive with insulation coating. The main air core coil unit 110 formed by winding wires in contact with each other in a flat plate shape, and the first air core 110a provided above or below the main air core coil unit 110 and of the main air core coil unit 110 ) A second air core 130a is formed in the center to communicate with each other, and is formed by winding an insulating-coated conductive wire in contact with each other and winding it in a flat plate shape, thereby increasing the induced voltage by electromagnetic induction with the main air core coil unit 110 . It is characterized in that it is configured to include an auxiliary coil unit 130 for generating and outputting.

As described above, the size of the primary coil element 100 can be reduced by implementing the insulation-coated copper wire in a flat plate shape to contact each other.

In addition, the induced voltage output from the auxiliary coil unit 130 may be used to drive an IC device mounted on a main board (not shown) of the finished product.

In the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, it is provided in contact with the main air core coil unit 110, and a central hole 141a to communicate with the first air core 110a. , 142a) is formed, and is formed in a flat plate shape to further include conductive shielding members 141 and 142 for shielding EMI.

The shielding members 141 and 142 are provided in contact with the upper surface of the main air core coil unit 110, and a central hole 141a is formed in the center to communicate with the first air core 110a, and is formed in a flat plate shape. A conductive upper shielding member 141 for shielding EMI is provided in contact with the lower surface of the main air-core coil unit 110, and a central hole 142a is formed in the center to communicate with the first air-core 110a. , is formed in a flat plate shape and is composed of a conductive lower shielding member 142 to shield EMI, and the auxiliary coil unit 130 is provided in contact between the main air-core coil unit 110 and the upper shielding member, or It is provided in contact between the main air-core coil unit 110 and the lower shielding member, and generates and outputs an induced voltage by electromagnetic induction with the main air-core coil unit 110 .

Preferably, the upper shielding member 141 is provided in contact with the upper surface of the main air core coil unit 110, and a first central hole 141a is formed in the center to communicate with the first air core 110a, It consists of an upper shielding coil unit 141 for shielding EMI formed by winding the insulation-coated wires in contact with each other in a flat shape.

And preferably, the lower shielding member 142 is provided in contact with the lower surface of the main air core coil unit 110, and a second central hole 142a is formed in the center to communicate with the first air core 110a. It is characterized in that it is a lower shielding coil unit 142 for shielding EMI formed by winding insulated-coated wires in contact with each other in a flat shape.

On the other hand, the upper shielding member and the lower shielding member may be formed by winding the insulating coated wire into a flat plate as described above, but is not limited thereto. For example, a shielding copper foil sheet having a central hole formed in the center and shielding EMI [For example, it may be composed of a thin copper plate or copper tape [copper foil tape]], or may be composed of a shielding fiber sheet (not shown) having a central hole and shielding EMI.

In addition, the primary coil element 100 is provided in contact between the main air core coil unit 110 and the upper shielding member, and a first through hole 121a communicating with the first air core 110a is located in the center. A second through hole 122a communicating with the first air core 110a is provided in contact between the formed upper insulating sheet 121 and the main air core coil unit 110 and the lower shielding member and is formed in the center The lower insulating sheet 122 is further included, and the auxiliary coil unit 130 is provided in contact between the upper insulating sheet 121 and the upper shielding member or the lower insulating sheet 122 and the lower shielding member. It is provided in contact between the members, characterized in that the output by generating an induced voltage by the main air-core coil unit 110 and electromagnetic induction.

According to this, the dielectric breakdown voltage is further increased, so that the gap between the coil parts can be further narrowed, and there is an advantage that the size of the product can be further reduced.

In the disclosed drawings, the auxiliary coil unit 130 is provided in contact between the upper insulating sheet 121 and the upper shielding coil unit 141, for example.

The upper and lower insulating sheets 121 and 122 may be formed of an insulating film made of a synthetic resin material.

More preferably, the upper insulating sheet 121 is formed of an upper double-sided adhesive film 121 having an adhesive layer formed thereon. According to this, there is an advantage in that the assembling property by adhesion between the main air-core coil unit 110 and the auxiliary coil unit 130 can be improved, and the insulating property can be increased.

In addition, the lower insulating sheet 122 is preferably formed of a lower double-sided adhesive film 122 on which an adhesive layer is formed. According to this, it is possible to improve assembling property due to adhesion between the main air-core coil unit 110 and the lower shielding coil unit 142 .

In the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, the main air core coil unit 110, the auxiliary coil unit 130 and the upper shielding nose of the primary side coil element 100 A portion 141 is insulating coated with an insulating coating material (eg, urethane enamel), and an additional adhesive layer on the insulating coating layer of the auxiliary coil unit 130 and the upper shielding coil unit 141 coated with the insulating coating material. A (bonding layer) is formed (coating formation), and then heat is applied (primary heating) to melt and harden the coated adhesive layer, thereby thermally bonding the auxiliary coil unit 130 and the upper shielding coil unit 141 to each other. and sequentially stacking the main air-core coil unit 110, the upper double-sided adhesive film 121, the heat-sealed auxiliary coil unit 130 and the upper shielding coil unit 141, and the sequentially stacked main air-core coil unit ( 110), by applying heat (secondary heating) to the upper double-sided adhesive film 121 and the heat-sealed auxiliary coil unit 130 and the upper shielding coil unit 141 to melt and harden the adhesive layer (adhesive) to the primary side It is characterized in that the coil element 100 can form one standardized coil bundle.

And, in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, the lower shielding coil unit 142 of the primary side coil element 100, the main air core coil unit 110, The auxiliary coil unit 130 and the upper shielding coil unit 141 are insulating-coated with an insulating coating material (eg, urethane enamel), and the auxiliary coil unit 130 and the upper shielding coil unit 141 are coated with an insulating coating material. ), an additional adhesive layer (bonding layer) is formed on the insulating coating layer (coating formation), and then heat is applied (primary heating) to melt and harden the coated adhesive layer, thereby forming the auxiliary coil unit 130 and the upper side The shielding coil part 141 is heat-sealed between each other, and the lower shielding coil part 142, the lower double-sided adhesive film 122, the main air core coil part 110, the upper double-sided adhesive film 121, the heat-sealed auxiliary The coil part 130 and the upper shielding coil part 141 are sequentially stacked, and the sequentially stacked lower shielding coil part 142, the lower double-sided adhesive film 122, the main air core coil part 110, and the upper double-sided adhesive film (121), by applying heat (secondary heating) to the heat-sealed auxiliary coil unit 130 and the upper shielding coil unit 141 to melt and harden the adhesive layer (adhesive) to shape the primary coil element 100 It is characterized in that it can form a single coil bundle.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the casing body 310 is in communication with the central through hole 100a of the primary coil element 100, so that the lower magnetic core A flat bottom part 311 having a lower through hole 311a formed in the center so that the 410 is inserted, and the outer peripheral surface of the primary and secondary coil elements 100 and 200 protruding upward from the edge of the bottom part 311 The outer guide 312 for holding the (100b, 210b, 220b) and the inner peripheral surface (100a', 210a', 220a') of the central through hole (100a, 210a, 220a) of the primary and secondary coil elements (100, 200) In order to hold the inner peripheral surfaces 100a', 210a', 220a' of the central through-holes 100a, 210a, 220a of the primary and secondary side coil elements 100 and 200 in contact with the , upward from the edge of the lower through-hole 311a. The inner guide 313 protruded, and the upper through-hole 320a formed in the cover 320 to correspond to the lower through-hole 311a and the upper magnetic core 420 to be inserted is further included, and the seating space ( S1) is formed between the inner guide 313 and the outer guide 312, and the primary and secondary coil elements 100 and 200 are placed on the bottom 311 of the casing body 310 and the inner guide ( 313) and the outer guide 312 is inserted between the holding, characterized in that.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the secondary-side first coil element 210 is mounted on the bottom 311, and the primary-side coil element 100 ) is stacked on the secondary-side first coil element 210 , and the secondary-side second coil element 220 is stacked on the primary-side coil element 100 and sequentially stacked.

As described above, according to the configuration in which the primary and secondary coil elements 100 and 200 are sandwiched between the inner guide 313 and the outer guide 312 and held, the primary and secondary coil elements 100 and 200 are simultaneously coupled to the casing without play or flow. (Ca) has the advantage of being able to be stably and firmly charged.

And, that the secondary-side first coil element 210 , the primary-side coil element 100 and the secondary-side second coil element 220 are held by being sandwiched between the inner guide 313 and the outer guide 312 , The guide 313 is in contact with the inner peripheral surfaces 100a', 210a', 220a' of the central through-holes 100a, 210a, 220a of the primary and secondary side coil elements 100 and 200, so that the center of the primary and secondary side coil elements 100 and 200 Holds the inner peripheral surfaces 100a', 210a', 220a' of the through holes 100a, 210a, 220a, and the outer guide 312 contacts the outer peripheral surfaces 100b, 210b, 220b of the primary and secondary coil elements 100 and 200 This means that the outer peripheral surfaces 100b, 210b, and 220b of the primary and secondary side coil elements 100 and 200 are held.

And the inner guide 313, for example, may be implemented in the shape of a dol-frame as shown, but is not limited thereto and may be implemented in the form of protrusions that protrude discretely at intervals, regardless of the shape 1, Any configuration that holds the inner circumferential surface of the secondary side coil elements 100 and 200 is included in the technical scope of the present invention.

In addition, the outer guide 312, for example, may be implemented in the form of a fence with an open front side as shown, but is not limited thereto and may be implemented in the form of protrusions that protrude discretely at intervals, and the shape of the outer guide 312 is not limited thereto. Regardless, any configuration that holds the outer peripheral surfaces of the primary and secondary coil elements 100 and 200 is included in the technical scope of the present invention.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, one end (eg, front end) of the bottom part 311 is integrally formed with the bottom part 311 and the primary terminal A plurality of primary side terminal blocks 331 to which the pin P1 is fastened, and a plurality of, for example, four primary side terminal pins P1 coupled to the primary side terminal block 331 and connected to the primary side coil element 100 . ) is further included, and between the plurality of primary side terminal blocks 331 and the primary side terminal blocks 331, wire passage grooves 332a and 332b are formed, and the main air core coil unit 110 has a wire ( 110k) and the wire 130k of the auxiliary coil unit 130 pass through the wire passage grooves 332a and 332b and are connected to the terminal pin P1.

Since the wires 110k and 130k of the main air-core coil unit 110 and the auxiliary coil unit 130 are respectively connected to the primary terminal pin P1 through the wire passage grooves 332a and 332b as described above, the wire 110k , 130k) can prevent contact or short, and also has the advantage of making the wiring work easy and convenient.

Meanwhile, the wires of the upper and lower shielding coil units 141 and 142 may be connected to, for example, a primary terminal pin to which the auxiliary coil unit 130 is connected or a primary terminal pin to which the main air core coil unit 110 is connected.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the wire passage groove 332a between the outer peripheral surface of the primary coil element 100 and the primary terminal blocks 331 and 331' , 332b) is formed to protrude upward from the bottom portion 311 to be located immediately behind, and the wire 110k of the main air-core coil unit 110 and the wire 130k of the auxiliary coil unit 130 are adjacent to each other. A first guide protrusion (335a) is further included to guide the connection to the primary terminal pin (P1), but to guide the connection to the primary terminal pin (P1) through the wire passage groove (332a) and spaced apart from each other. characterized by being

According to this, there is an advantage that the wire 110k of the main air-core coil unit 110 and the wire 130k of the auxiliary coil unit 130 can be safely connected without contact with each other while being spaced apart.

And, between the outer peripheral surface of the primary side coil element 100 and the primary side terminal block (331, 331') to be located immediately behind the wire passing groove (332a, 332b) is formed to protrude upward from the bottom (311) , Specifically, it is spaced apart from the first guide protrusion 335a to the left and right to protrude from the bottom part 311, and the wires 110k of the main air-core coil part 110 do not contact each other and are spaced apart from each other to pass the wire. The wiring is guided to the primary terminal pin P1 through the groove 332b, or the wires 130k of the auxiliary coil unit 130 are spaced apart from each other without contacting each other, so that the primary side through the wire passage groove 332b. It is characterized in that the second guide protrusion 335b for guiding the connection to the terminal pin P1 is further included.

According to this, there is an advantage in that the wires 110k of the main air-core coil unit 110 or the wires 130k of the auxiliary coil unit 130 can be safely connected without contacting each other while being spaced apart from each other.

And, the primary side terminal pin (P1), the two main coil terminal pins to which the wire 100k of the main air-core coil unit 110 is connected, and the wire 130k of the auxiliary coil unit 130 are connected to two It is preferable that the auxiliary coil is composed of terminal pins.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, a front fastening protrusion 321 is formed to protrude downwardly on one side (front end) of the cover 320, and the front The fastening protrusion 321 is fastened to any one of the wire passing grooves 342a among the wire passing grooves 332a and 332b, and on the other side (rear end) of the cover 320, a rear fastening protrusion 325 protrudes backward. is formed, and a rear fitting hole 345 is formed through the rear side of the outer guide 312 of the casing body 310 in the front and rear directions so that the rear fastening protrusion 325 is fitted.

Since the front fastening protrusion 321 can be fastened to the previously formed wire passing groove 322a, it is not necessary to form a separate fastening groove at the front end of the casing, so that the manufacturing cost can be reduced.

In addition, since they are all fastened at the same time from the rear side, the cover 320 and the casing body 310 can be firmly fastened, and in particular, the rear fastening protrusion 325 is fastened to the rear fitting hole 345 in the front and rear directions, so that it is sequential in the vertical direction. There is an advantage that can firmly hold the gap or flow of the stacked primary and secondary coil elements 100 and 200 .

In the transformer (A) with built-in primary and secondary coil elements according to an embodiment of the present invention, a pair of adjacent primary sides of left and right forming a wire passage groove 342a to which the front fastening protrusion 321 is fastened In the terminal block 331, the locking ends 331a are stepped in a direction opposite to each other, and the locking ends 331a are formed from the upper ends of the pair of primary terminal blocks 331 and 331' to be inclined downward toward the locking ends 331a. An inclined guide surface 331b is formed, and a locking jaw 321a that protrudes left and right from the left and right sides of the front fastening protrusion 321 and is fastened in a hook type to the locking end 331a is formed, and the front fastening A guide surface 321b is inclined at the tip of the front fastening protrusion 321 so that the protrusion 321 is hooked and fastened in a hook type while being guided by the inclined guide surface 331b, and the front fastening protrusion 321 and A pair of cut-out grooves 322 are formed between one side of the cover 320 so that the front fastening protrusion 321 has elasticity, and the front fastening protrusion 321 has the wire passing groove 342a. ) is characterized in that it is fastened in a hook type by elasticity.

Since it adopts an elastic and hook-type fastening method, if the front fastening protrusion 321 is lowered, the hook can be clicked and elastically fastened while riding down the inclined guide surface 331b, and thus conveniently and quickly And there is an advantage that can be firmly fastened.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, a rear fitting protrusion 326 is formed to protrude downwardly on the other side (rear end) of the cover 320, and the rear It is characterized in that a rear concave groove 346 is formed on the rear side of the outer guide 312 of the casing body 310 so that the fitting protrusion 326 is fitted. There is an advantage that the rear side of the cover 320 can be more firmly fastened.

In the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, a front fitting protrusion 322 is formed to protrude from the front fastening protrusion 321, and the front fitting protrusion ( 322 is characterized in that it is fitted into the other wire passage grooves 342b among the wire passage grooves 332a and 332b.

According to this, there is an advantage in that the front side of the cover 320 can be detachably fastened using the previously formed wire passage grooves 332a and 332b.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, a triple insulated wire of the secondary coil element 200 recessed in the vertical direction is provided at the rear end of the outer guide 312. It is characterized in that the lead-out groove 351 for drawing out to the secondary side terminal pin P2 is formed.

And, in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, when the cover 320 is fastened to the casing body 310, the rear so as to be mated with the withdrawal groove 351 It is characterized in that the center of the fitting protrusion 326 has a recessed groove 326a that is recessed upward to draw out the triple insulated wire of the secondary side coil element 200 to the secondary side terminal pin P2.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, the three-fold insulated wire of the secondary-side first coil element 210 placed on the bottom 311 is drawn out through a groove ( In order to facilitate the extraction to the 351 , the first extraction guide groove 311b formed downwardly in the bottom 311 and the secondary side second coil element 220 in close contact with the cover 320 are three-fold. In order to facilitate the withdrawal of the heavy insulated wire into the lead-out groove 351, a second lead-out guide groove 320b formed to protrude upwardly in the cover 320 is further included.

And, in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, an impregnating liquid (not shown) is cured inside the casing (Ca) [that is, the insertion space (S1)] It is characterized in that it is filled.

The impregnating liquid impregnates the primary and secondary coil elements 100 and 200 embedded in the casing (Ca), and then hardens to integrate the primary and secondary coil elements 100 and 200 into the casing (Ca) as a liquid for insulation, for example. It may consist of liquid.

The impregnating liquid includes, for example, an epoxy resin liquid, a varnish liquid, and a urethane resin liquid.

The fact that the primary and secondary coil elements 100 and 200 are integrated into the casing Ca means that the primary and secondary coil elements 100 and 200 are one body in the casing Ca by hardening of the impregnating liquid. In this way, the primary and secondary side coil elements 100 and 200 are integrated by the hardened impregnating liquid inside the casing (Ca), so that the primary and secondary coil elements 100 and 200 are more firmly in the casing. It can be fixed to (Ca), and in particular, noise due to vibration of the coil can be prevented during operation due to the application of current, and since the impregnating liquid is composed of an insulating liquid, there is an advantage that the insulating properties can be further improved.

In the transformer (A) with simultaneous built-in primary and secondary coil elements according to an embodiment of the present invention, it is provided between the secondary-side first coil element 210 and the primary-side coil element 100 that are sequentially stacked as described above. A first insulating member (not shown) for reinforcing insulation and increasing adhesion, and a second insulation provided between the primary side coil element 100 and the secondary side second coil element 220 to strengthen insulation and increase adhesion It is characterized in that the member is further included.

The first insulating member and the second insulating member may be formed of an insulating film or an insulating tape.

In the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, it is attached between the bottom surface 311 of the casing body 310 and the secondary side first coil element 210, , characterized in that the third insulating tape (not shown) is further included to strengthen the insulation and catch the flow or vibration of the secondary-side first coil element 210 .

According to the configuration as described above, there is an advantage that can strengthen the insulation and catch the movement.

The third insulating tape is composed of a double-sided tape.

And, in the primary and secondary side coil element simultaneous built-in transformer (A) according to an embodiment of the present invention, the lower middle foot (410a) interpolated into the lower through hole (311a) and the inner guide (313) is formed to protrude upward. The lower magnetic core 410 having a pair of lower outer foot 410b formed on the left and right sides of the lower middle foot 410a, and the upper midfoot interpolated into the upper through hole 320a and the inner guide 313 are downward. It is mounted on the main board (not shown) of the finished product on which the upper magnetic core 420 protrudes and the pair of upper outer feet 420b are formed on the left and right sides of the upper middle foot, and the transformer A is mounted, A terminal fastening hole 511 to which the primary side terminal pin P1 is fastened is formed, and a secondary side terminal pin P2 connected to the secondary side coil element 200 is provided, and the primary and secondary sides are provided. It is characterized in that the casing (Ca) in which the coil elements 100 and 200 are embedded and the base 500 for securing the insulation distance from the main board by mounting the bundle of the upper and lower magnetic cores 410 are further included.

It is characterized in that the rear end of the base 500 is recessed to correspond to the lead-out groove 351, and a lead-out hole 513 for allowing the wire of the secondary side coil element 200 to be drawn out is formed.

Of course, the upper and lower magnetic cores 410 are configured to increase the magnetic coupling force between the primary side coil element 100 and the secondary side coil element, that is, to minimize the leakage magnetic field.

As described above, preferred embodiments according to the present invention have been reviewed, and it is common knowledge in the technical field that the present invention can be implemented in other specific forms without changing the technical spirit or essential features in addition to the above-described embodiments. It is self-evident to those who have Therefore, it should be understood that the above-described embodiments are illustrative and not restrictive.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

A: Simultaneous built-in transformer with primary and secondary coil elements according to an embodiment of the present invention
100: primary side coil element 100a: central hole of primary side coil element
100a': inner peripheral surface of the primary side coil element 100b: outer peripheral surface of the primary side coil element
110: main air core coil unit 110a: first air core
110k: wire of main coil part
121: upper double-sided adhesive film 121a: first through hole
122: lower double-sided adhesive film 122a: second through hole
130: auxiliary coil unit 130a: second air core
130k: wire of auxiliary coil
141: upper shielding coil portion 141a: first central hole
142: lower shielding coil part 142a: second central hole
200: secondary side coil element
210: secondary-side first coil element 210a: central hole of the secondary-side first coil element
210a': the inner peripheral surface of the secondary-side first coil element
210b: outer peripheral surface of the secondary-side first coil element
220: secondary-side second coil element 220a: central hole of the secondary-side second coil element
220a': the inner peripheral surface of the secondary side second coil element
220b: outer peripheral surface of the secondary side second coil element
Ca: Casing S1: Casing seating space
310: casing body
311: bottom portion of the casing body 311a: lower through-hole
311b: first withdrawal guide groove
312: outer guide 313: inner guide
320: cover 320a: upper hole
320b: second withdrawal guide groove
321: front fastening protrusion 321a: locking jaw
321b: guide face
322: incision groove
323: front fitting projection 325: rear fastening projection
326: rear fitting protrusion 326a: concave groove
331,331' : Primary terminal block
331a: locking end 331b: inclined guide surface
332a, 332b: wire through groove
335a: first guide projection 335b: second guide projection
345: rear fitting hole 346: rear concave groove
351: withdrawal groove P1: primary terminal pin
410: lower magnetic core
410a: lower midfoot 410b: lower exofoot
420: upper magnetic core 420b: upper outer leg
500: base 511: terminal fastening hole
513: withdrawal hole

Claims (6)

A casing body 310 having a seating space S1 formed thereon, and a cover 320 that is detachably fastened to the casing body 310 to open and close the seating space S1 of the casing body 310. a casing (Ca) and
A flat primary side coil element 100 inserted into the seating space S1 of the casing body 310 and;
A secondary side coil that is in contact with the primary side coil element 100 and is inserted into the seating space S1 of the casing body 310 and generates an induced current by the current applied to the primary side coil element 100 . It is configured to include the element 200,
The secondary side coil element 200 and the primary side coil element 100 are simultaneously charged in the seating space S1 of the casing body 310 closed by the cover 320,
The casing body 310 is,
A flat bottom portion 311 in communication with the central through hole 100a of the primary side coil element 100 and having a lower through hole 311a formed in the center so that the lower magnetic core 410 is inserted;
An outer guide 312 protruding upward from the edge of the bottom portion 311 to hold the outer peripheral surfaces 100b, 210b, and 220b of the primary and secondary coil elements 100 and 200;
In contact with the inner peripheral surfaces 100a', 210a', 220a' of the central through-holes 100a, 210a, 220a of the primary and secondary coil elements 100 and 200, the central through-holes 100a of the primary and secondary coil elements 100 and 200 In order to hold the inner peripheral surfaces 100a', 210a', 220a' of 210a, 220a), an inner guide 313 protruding upward from the edge of the lower through hole 311a,
An upper through-hole (320a) formed in the cover (320) to correspond to the lower through-hole (311a) and into which the upper magnetic core 420 is inserted is further included.
The seating space S1 is formed between the inner guide 313 and the outer guide 312,
The primary and secondary side coil elements 100 and 200 are placed on the bottom 311 of the casing body 310 and held by being sandwiched between the inner guide 313 and the outer guide 312,
The secondary side coil element 200,
a secondary-side first coil element 210 that is in contact with one surface of the primary-side coil element 100 and is inserted into the seating space S1;
It is in contact with the other surface of the primary side coil element 100 and is configured to include a secondary side second coil element 220 that is inserted into the seating space S1,
The secondary-side first coil element 210, the primary-side coil element 100 and the secondary-side second coil element 220 are sequentially stacked and embedded in a casing Ca,
The secondary-side first coil element 210 is placed on the bottom 311,
The primary side coil element 100 is stacked on the secondary side first coil element 210,
The secondary-side second coil element 220 is a primary and secondary-side coil element simultaneous built-in transformer, characterized in that the stacked sequentially stacked on the primary-side coil element (100).
The method according to claim 1,
In order to charge the primary side coil element 100 and the secondary side coil element 200 in close contact with each other, the cover 320 lowers the primary side coil element 100 and the secondary side coil element 200 at the same time. Simultaneous built-in transformer with primary and secondary side coil elements, characterized in that it is detachably fastened to the casing body (310) so as to be pressed.
The method according to claim 1,
The primary side coil element 100,
The first air core 110a is formed in the center, and the main air core coil unit 110 is formed by winding an insulating coated conductive wire in contact with each other to form a flat plate;
The second air core 130a is provided above or below the main air core coil unit 110 and is formed in the center to communicate with the first air core 110a of the main air core coil unit 110, and is electrically conductive with insulation coating. It is formed by winding the wires in a flat plate shape by contacting each other, and comprises the main air-core coil unit 110 and the auxiliary coil unit 130 for generating and outputting an induced voltage by electromagnetic induction,
A plurality of primary terminal blocks 331 formed at one end of the bottom portion 311 and to which the primary terminal pins P1 are fastened;
It is fastened to the primary side terminal block 331 and is configured to further include a plurality of primary side terminal pins P1 connected to the primary side coil element 100,
Wire passage grooves 332a and 332b are formed between the plurality of primary side terminal blocks 331 and the primary side terminal blocks 331,
The wire 110k of the main air-core coil unit 110 and the wire 130k of the auxiliary coil unit 130 pass through the wire passage grooves 332a and 332b and are connected to the terminal pin P1. Simultaneous built-in transformer with primary and secondary side coil elements.
4. The method according to claim 3,
Between the outer peripheral surface of the primary side coil element 100 and the primary side terminal block (331, 331') is formed to protrude from the bottom part 311 so as to be positioned immediately behind the wire passage grooves 332a and 332b, and the main air core The wire 110k of the coil unit 110 and the wire 130k of the auxiliary coil unit 130 do not contact each other and are spaced apart from each other to guide the connection to the primary terminal pin P1 through the wire passage groove 332a. 1 Simultaneous built-in transformer with primary and secondary coil elements, characterized in that the guide projection (335a) is further included.
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