KR20150139851A - Circuit board magnetic component with integrated ground structure and methods for manufacture - Google Patents

Abstract

The circuit board transformer component 100, 200, 300, 400 includes a component grounding section 162, 262, 362, 462 extending substantially perpendicular to the board pin portion 160, 260, 360, 202, 302, 402 with at least one ground pin (152, 252, 352, 452) The component ground section is fixed to the magnetic piece or bobbin to counter the electromagnetic interference in the power supply application. The components can be manufactured with a reduced number of steps and greater uniformity with improved performance characteristics.

Description

TECHNICAL FIELD [0001] The present invention relates to a circuit board magnetic component having an integrated ground structure and a method of manufacturing the same,

Field of the Invention The field of the present invention generally relates to the fabrication of magnetic components, such as inductors, and more particularly to the fabrication of transformer devices having integrated grounding structures for circuit board applications.

Magnetic components such as inductors and transformers are now widely used in power supply applications for electronic devices. Transformer devices for circuit board applications are known and include primary and secondary transformer coils wound on insulating bobbins that include conductive pins to establish an electrical connection within a corresponding through hole in the circuit board . The bobbin and associated coils are coupled to the magnetic core assembly and, according to well known principles, the coils of the transformer may be used to increase or decrease the voltage input to provide a power supply output of a different voltage than the input voltage. Thus, for example, a higher voltage input can be reduced to a lower voltage input suitable for use by an electronic device on a circuit board, or a lower voltage output from an electronic device on the circuit board is input to another electrical device It can be boosted to a high voltage.

Electromagnetic interference (EMI) problems are problematic in certain applications of such transformers, and corresponding improvements are required. It is known in the art to connect the wire to the magnetic core at one end and the wire to an electrically quiet node at the opposite end. One end of the wire is typically connected to a conductive pin provided on a bobbin connected to a quiet electrical node through a circuit board assembly when the transformer is installed on the circuit board and the other end of the wire is connected to a magnetic core As shown in FIG. However, such wire assembly processes to cope with EMI problems are complicated and time consuming. It also suffers from reliability and performance problems caused by varying the grounding resistance as components are used. In particular, a lower ground resistance is preferred, but the actual ground resistance is difficult to control from a manufacturing standpoint. As a result, the core to pin resistance has to be tested, which leads to an increased cost of providing the transformer components.

U.S. Patent No. 8,198,969 teaches a transformer component having a ground pin provided in a pocket of a bobbin and exposing an end of the ground pin to the surface of the magnetic core. The magnetic core may be provided with a groove for receiving the pin, and the pin and the core may be electrically connected using a conductive adhesive. This configuration represents a significant improvement over the wire assembly anchors described above, but is not entirely satisfactory from a manufacturing standpoint and requires improvement.

The present invention provides a circuit board transformer component, wherein the circuit board transformer component comprises: a bobbin provided with a plurality of electrically conductive pins; And at least one of the electrically conductive fins includes a substrate pin portion and a component grounding section extending substantially perpendicular to the substrate pin portion, component ground section.

Non-limiting and non-exhaustive embodiments are described with reference to the following drawings, wherein like reference numerals designate like parts throughout the several views, unless otherwise specified in the drawings.

1 is a front perspective view of a first exemplary core piece for an exemplary circuit board transformer component in accordance with a first exemplary embodiment of the present invention;
Figure 2 is a top view of the exemplary core piece shown in Figure 1,
FIG. 3 is a bottom perspective view of an exemplary bobbin including ground pins for use with the core pieces shown in FIGS. 1 and 2;
Figure 4 is a side view of the exemplary bobbin and ground pin shown in Figure 3,
5 is a perspective view of a bobbin being assembled with a magnetic core assembly including the core piece shown in Figs. 1 and 2,
Figure 6 is a bottom view of the assembly shown in Figure 5, illustrating the connection of the grounding pin to the core,
FIG. 7 is a view similar to FIG. 6, but illustrating another step of manufacture, showing that the ground pin is bonded in place using a conductive epoxy; FIG.
8 is a rear perspective view of the assembly shown in Figs. 7 and 8 at another stage of manufacture, showing that the transformer component is cured, Fig.
Figure 9 is a plan view of an exemplary bobbin including a ground pin in accordance with a second exemplary embodiment of the present invention,
10 is a front perspective view of the bobbin shown in Fig. 9,
Figure 11 is a front perspective view of a magnetic core piece for use with the bobbin shown in Figures 9 and 10,
12 is a plan view of the magnetic core piece shown in Fig. 9,
13 is a perspective view of the bobbin shown in Figs. 8 and 9 assembled with the magnetic core piece shown in Figs. 11 and 12, illustrating the connection of the grounding pin to the core,
Figure 14 is a view similar to Figure 13, but showing a second magnetic core piece in an assembly,
Figure 15 is a view similar to Figure 14 but illustrating another stage of manufacture and showing that the ground pin is bonded in place using a conductive epoxy;
Fig. 16 is a view similar to Fig. 15, but illustrating components at different stages of manufacture, showing that the transformer components are cured, Fig.
17 is a front perspective view of a magnetic core piece according to a third exemplary embodiment of the present invention,
18 is a plan view of the magnetic core piece shown in Fig. 17,
19 is a front perspective view of an exemplary bobbin including ground pins for use with the magnetic core piece shown in Figs. 17 and 18, Fig.
Figure 20 is a side view of an exemplary bobbin according to a second exemplary embodiment of the present invention,
21 is a perspective view of the bobbin shown in Figs. 19 and 20 being assembled with the magnetic core assembly including the core piece shown in Figs. 17 and 18, illustrating the connection of the ground pin to the magnetic core piece, Fig.
Figure 22 is a view similar to Figure 21 but illustrating another stage of manufacture and showing that the ground pin is bonded in place using a conductive epoxy;
Figure 23 is a side view of the assembly shown in Figure 21, illustrating the connection of ground pins to a magnetic core piece;
Figure 24 is a side view of the assembly shown in Figure 22 at another stage of manufacture, showing that the ground pin is bonded in place using a conductive epoxy;
25 is a front perspective view of a magnetic core piece according to a fourth exemplary embodiment of the present invention,
26 is a plan view of the magnetic core piece shown in Fig. 25, Fig.
27 is a rear perspective view of an exemplary bobbin including ground pins for use with the magnetic core piece shown in Figs. 25 and 26, Fig.
Figure 28 is a bottom view of the exemplary bobbin shown in Figure 27,
29 is a rear perspective view of the bobbin shown in Fig. 27, illustrating the connection of ground pins to the bobbin, Fig.
Figure 30 is a view illustrating the bobbin shown in Figure 29 assembled with the magnetic core piece shown in Figures 25 and 26,
31 is a diagram illustrating the assembly of FIG. 31 provided with a second magnetic core piece,
Figure 32 is a comparative ground resistance chart of components manufactured according to embodiments of the present invention and conventional transformer components.

In order to cope with EMI concerns, it is necessary to simplify the grounding structure, to improve the reliability of the components to be manufactured, to achieve better grounding performance (i.e., to ensure that the grounding resistance of the component being manufactured is connected to a known component of the type described above ≪ / RTI > as compared to the first embodiment of the present invention) are described herein. Methods The sun will be partially apparent in the following description and will be discussed in part in a clear manner.

FIGS. 1-8 collectively illustrate a first exemplary embodiment of a circuit board transformer component (FIGS. 4-6), wherein the circuit board transformer component 200 is generally shown separately in FIGS. 3 and 4 An exemplary bobbin 102, a first magnetic piece 106 separately illustrated in FIGS. 1 and 2, and a magnetic body 104 fabricated from a second magnetic piece 108.

Referring now to Figures 1 and 2, the first magnetic piece 106 includes a generally generally flat or planar base 110 and upstanding sidewalls 112, 114, 116 extending upwardly from the base . The side walls 112,114 and 116 define a generally recessed or receptacle 118 that is generally straight and linear outside of it and is round in the interior to be substantially semicircular over the base 110. [ A rounded protrusion 120 extends upwardly from the base 110 at a central portion of the receptacle 118. In the example shown, the periphery of the protrusion 120 is generally circular and completes a 360 ° arc on the base 110, while the receptacle 118 is side open and is much smaller than 360 ° on the base 110 Complete arc.

The front edge 122 of the base 110 is exposed and includes a groove 124 and a tapered side edge 126 in the illustrated example. The tapered side edge 126 imparts a forward edge of a triangular or wedge shape adjacent the front edge 122. The opposite edge of the front edge 122 does not include a tapered edge, such as the side edge 126, as shown. The side walls 112 and 114 further include exposed front surfaces 128 and 130 that extend over the front edge 122 of the base 110. The front edge 122 of the base 110 may also be chamfered as shown to assist seating of the bobbin 102 in a desired position and orientation.

The core piece 106 may be manufactured from known magnetic materials according to known processes. The core piece 108 (Figs. 4-8) may be manufactured as a piece essentially identical to the core piece 106 in the embodiment considered. It should be noted, however, that the grooves 124 may be considered optional in the core piece 108 and need not be included.

3 and 4, the bobbin 102 is fabricated from an electrically non-conductive or insulating material and generally includes an upper flange 140, a tubular body 142, a lower flange 144, . Flange 140 defines a winding space 148 for receiving a primary winding or coil and secondary winding or coil in accordance with known methods and techniques. The coil or winding is terminated or connected to one of a plurality of electrically conductive pins (150, 152, 154, 156) provided within the connection portion (146). The pins 150,152,154 and 156 generally extend downwardly from the connecting portion 146 and are generally parallel to the longitudinal axis 158 of the tubular portion 142.

One of the pins, i.e., pin 152, is a ground pin and is connected to shaft 158 and other pins 150,154, 156 for connection to the circuit board through the through hole therein. An axial pin substrate portion 160 extending generally parallel and a component grounding portion 162 extending generally perpendicular to the axis 158 and other pins 150,154,156. In other words, and unlike the other pins 150, 154, 156, the ground pin 152 includes a right angle bend having a ground portion 162 extending from one side of the right angle bend, And a pin substrate portion 160 extending from the other side of the right angle bend. Thus, the ground portion 162 extends vertically from the vertical side wall 164 of the connecting portion 146, as best seen in FIG. 4, while the pin substrate portion 160 extends from the bottom of the connecting portion 146 And extends vertically from the wall 166. The right angle bend facilitates the connection of the ground pin 152 to the core piece 106 as further described below. The other fins 150, 154, 156 are substantially straight and do not include a right angle bend.

Flanges 140 and 144 each include a central opening 168 that communicates with a hollow interior of tubular portion 142. The center opening 168 cooperates with the protrusion 120 of the magnetic core piece 106 (Figs. 1 and 2) when the bobbin 102 is assembled to the core piece 106.

As shown in Figure 5, the bobbin 102 has an opening 168 (Figure 3) in the bobbin 102 and a protrusion 120 (Figure 1) in the core pieces 106, 108 to guide the piece in a proper orientation And sandwiched between the core pieces 106 and 108, using the first and second core layers 106 and 108, respectively. The magnetic core pieces 106 and 108 may be gap-tuned from each other when assembled to the bobbin 102 in any manner known in the art.

6, the component grounding portion 162 of the ground pin 152 extends from the core piece forward edge 122 to the groove 124 (FIG. 6), as the bobbin 102 is assembled to the core piece 106. [ .

Figure 7 illustrates a conductive epoxy 170 being applied to the groove 124 as the component grounding portion 162 is mated with the groove. 8, the component grounding portion 162 is secured within the groove 124 using a conductive epoxy and is baked so that the entirety of the component 100 is cured.

The connection of the component grounding portion 162 and the core piece 106 through the groove 124 can be reliably achieved with less manufacturing steps and at a relatively lower cost than traditionally provided.

9 to 16 collectively illustrate a second exemplary embodiment of a circuit board transformer component (Figs. 13-16), wherein the circuit board transformer component 200 is generally shown separately in Figs. 9 and 10 An illustrated bobbin 202, a first magnetic piece 206 separately illustrated in FIGS. 11 and 12, and a magnetic body 204 fabricated from a second magnetic piece 208.

Referring now to Figures 11 and 12, the first magnetic piece 206 includes a base 110 that is generally flat or planar, and upstanding sidewalls 112, 114, 116 extending upwardly from the base 110 . The sidewalls 112, 114, and 116 define a generally semicircular inner recess or receptacle 118 over the base 110 that is generally straight and linear in its exterior and rounded in the interior. A rounded protrusion 120 extends upwardly from the base 110 at a central portion of the receptacle 118. In the example shown, the periphery of the protrusion 120 is generally circular and completes a 360 ° arc on the base 110 while the receptacle 118 is side open and completes an arc on the base 110 that is much smaller than 360 ° do.

The front edge 122 of the base 110 is exposed and in an exemplary core piece 206 as shown, unlike the core piece 106 (Figures 1 and 2), the groove 124 and the tapered side The edge 126 is omitted. The front edge 122 of the base 110 at the core piece 206 is entirely linear and linear and may also be chamfered as shown to assist seating of the bobbin 202 in a desired position and orientation in the example shown. .

The core piece 206 may be manufactured from known magnetic materials according to known processes, similar to the core piece 106. The core piece 208 (Figs. 14-16) may be manufactured as a piece essentially identical to the core piece 206 in the considered embodiment.

9 and 10, bobbin 202 is fabricated from an electrically non-conductive or insulative material and generally includes an upper flange 240, a tubular body 242, a lower flange 244, and a connecting portion 246, . Flange 240 defines a winding space 248 for receiving a primary winding or coil and secondary winding or coil in accordance with known methods and techniques. The coil or winding is terminated or connected to one of a plurality of electrically conductive pins (250, 252, 254, 256) provided within the connection portion (246). The pins 250, 252, 254 and 256 generally extend downwardly from the connecting portion 246 and extend generally parallel to the longitudinal axis (not shown in FIG. 10 but similar to the axis 158 shown in FIG. 4) do.

One of the pins, i.e., pin 250 in the example of FIGS. 9 and 10, is a ground pin and is generally parallel to the axis and other pins 252, 254, 256 for connection to the circuit board through the through- Extending axial pin substrate portion 260 and a component grounding portion 262 extending generally perpendicular to the axes of the other pins 252, 254, 256. In other words, and unlike the other fins 252, 254, and 256, the ground pin 250 includes a right angled bend that includes a ground portion 262 extending from one side of the right angled bend, (Not shown). 9 and 10, the ground portion 262 extends parallel to the horizontal top wall 264 of the connecting portion 246 while the pin substrate portion 260 is connected to the connecting portion 246, And extends vertically from the bottom wall 266 of the frame. The right angle bend facilitates the connection of the ground pin 250 to the core piece 206 as further described below.

Flanges 240 and 244 each include a central opening 268 that communicates with the hollow interior of tubular portion 242. The central opening 268 cooperates with the protrusion 120 of the magnetic core piece 206 (Figs. 11 and 12) when the bobbin 102 is assembled to the core piece 106.

13, the bobbin 202 may be assembled with the core piece 206 and the opening 268 (shown in FIG. 14) in the bobbin 202 to guide the piece in the proper orientation And the bobbin 202 is interposed between the core pieces 206 and 208 using the projections 120 (Figs. 11 and 12) in the core pieces 206 and 208 ) Are also assembled. The magnetic core pieces 206 and 208 may be gap-tuned from each other when assembled to the bobbin 202 in any manner known in the art.

13 and 14, as the bobbin 202 is assembled to the core piece 206, the component grounding portion 262 is exposed on the top wall 264 of the bobbin connecting portion 246, The component grounding portion 262 of the ground pin 250 extends to the face 128 of the side wall 112 of the magnetic core piece 206.

Figure 15 shows a conductive epoxy 270 being applied to secure the component grounding portion 262 in place and to ensure electrical connection to the core piece 102. [ As shown in FIG. 16, the entirety of the component 200 is then baked to cure the structure.

In comparison with the first exemplary embodiment, while providing a slightly simpler shape to the magnetic core piece 206 and also using the other of the pins provided on the bobbin 202 as a ground pin, 262 and core piece 206 can be reliably achieved with fewer manufacturing steps and at a relatively lower cost than traditionally provided.

17-24 collectively illustrate a third exemplary embodiment of a circuit board transformer component 300 (Figs. 21-24), wherein the circuit board transformer component 300 is generally shown in Figs. 19 and < RTI ID = 0.0 > A first magnetic piece 306 separately illustrated in FIGS. 1 and 2, and a magnetic body 304 fabricated from a second magnetic piece 308. The bobbin 302 is illustrated in FIG.

17 and 18, the first magnetic piece 306 includes a generally generally flat or planar base 110 and upstanding sidewalls 112, 114, 116 extending upwardly from the base. The sidewalls 112, 114, and 116 define a generally semicircular inner recess or receptacle 118 over the base 110 that is generally straight and linear in its exterior and rounded in the interior. A rounded protrusion 120 extends upwardly from the base 110 at a central portion of the receptacle 118. In the example shown, the periphery of the protrusion 120 is generally circular and completes a 360 ° arc on the base 110 while the receptacle 118 is side open and completes an arc on the base 110 that is much smaller than 360 ° do.

Although the front edge 122 of the base 110 is exposed and includes a tapered side edge 126 similar to the core piece 106 (Figures 1 and 2) But does not include grooves 124 as in FIG. The tapered side edge 126 imparts a forward edge of a triangular or wedge shape adjacent the front edge 122. The opposite edge of the front edge 122 does not include a tapered edge, such as the side edge 126, as shown. The side walls 112 and 114 further include exposed front surfaces 128 and 130 that extend over the front edge 122 of the base 110. The front edge 122 of the base 110 may also be chamfered as shown to assist in seating the bobbin 302 in a desired position and orientation.

The core piece 306 may be manufactured from known magnetic materials according to known processes. Core pieces 308 (Figs. 21-24) may be fabricated as essentially the same piece as core piece 306 in the embodiment considered.

19 and 20, the bobbin 302 is fabricated from an electrically non-conductive or insulating material and generally includes an upper flange 340, a tubular body 342, a lower flange 344, and a connecting portion 346, . Flange 340 defines a primary winding or coil according to known methods and techniques and a winding space 348 for receiving a secondary winding or coil. The coil or winding is terminated or connected to one of the plurality of electrically conductive pins 350, 352, 354, 356 provided in the connecting portion 346. The pins 350, 352, 354 and 356 generally extend downwardly from the connecting portion 346 and are generally parallel to the longitudinal axis 358 of the tubular portion 342.

19 and 20, one of the pins, that is, the pin 356 is a ground pin, and the shaft 358 and the other pins 350 and 354 (not shown) for connection to the circuit board through the through- An axial pin substrate portion 360 extending generally parallel to the pins 356 and 356 and a component ground portion 362 extending generally perpendicular to the axis 358 and other pins 350,352,354. In other words, the ground pin 356 includes a right angle bend having a ground portion 362 extending from one side of the right angled bend and a fin substrate portion 360 extending from the other side of the right angled bend. Thus, the ground portion 362 extends vertically from the vertical side wall 164 of the connecting portion 146, as best seen in FIG. 4, while the pin substrate portion 360 extends from the bottom of the connecting portion 146 And extends vertically from the wall 166. The right angle bend facilitates the connection of the ground pin 152 to the core piece 106 as further described below. Unlike the previous embodiment, the ground portion 362 in the component 300 extends generally outward and sideways with the side wall 168 of the bobbin connector portion 146.

The bobbin flanges 340 and 344 each include a central opening 368 that communicates with the hollow interior of the tubular portion 342. The central aperture 368 cooperates with the protrusion 120 of the magnetic core piece 306 (Figs. 17 and 18) when the bobbin 302 is assembled to the core piece 306.

As shown in Figure 21, the bobbin 302 includes openings 368 (Figure 19) in the bobbin 302 and protrusions 120 (Figure 17) in the core pieces 306, 308 to guide the pieces in the proper orientation And 18), the core pieces 306 and 308 can be interposed. The magnetic core pieces 306 and 308 may be gap-tuned from each other when assembled to the bobbin 302 in any manner known in the art.

21 and 23, the component grounding portion 362 of the grounding pin 356 is connected to the side wall (not shown) of the core piece 306 as the bobbin 302 is assembled to the core piece 306 130, respectively.

Figures 23 and 24 illustrate a conductive epoxy 370 that is being applied to secure the component grounding portion 362 of the ground pin 356 and to complete the electrical connection to the core piece 306. The entire component 300 is baked to cure the structure.

In comparison with the first exemplary embodiment, while providing a slightly simpler shape to the magnetic core piece 306 and also using the other of the pins provided on the bobbin 302 as a ground pin, 362 and core piece 306 can be reliably achieved with less manufacturing steps and at a relatively lower cost than traditionally provided.

Figs. 26-31 collectively illustrate a fourth exemplary embodiment of a circuit board transformer component 400 (Figs. 29-31), wherein the circuit board transformer component 400 is generally shown in Figs. 27 and < RTI ID = A bobbin 402 separately illustrated in FIG. 28, a first magnetic piece 406 illustrated separately in FIGS. 25 and 26, and a magnetic body 404 manufactured from the second magnetic piece 408.

Referring now to Figures 25 and 26, the first magnetic piece 406 includes a generally generally flat or planar base 110 and upstanding sidewalls 112, 114, 116 extending upwardly from the base 110 . The sidewalls 112, 114, and 116 define a generally semicircular inner recess or receptacle 118 over the base 110 that is generally straight and linear in its exterior and rounded in the interior. A rounded protrusion 120 extends upwardly from the base 110 at a central portion of the receptacle 118. In the example shown, the periphery of the protrusion 120 is generally circular and completes a 360 ° arc on the base 110 while the receptacle 118 is side open and completes an arc on the base 110 that is much smaller than 360 ° do.

The front edge 122 of the base 110 is exposed and unlike the core piece 106 (Figures 1 and 2), in the exemplary core piece 406 as shown, the groove 124 and the tapered side edge (126) is omitted. The front edge 122 of the base 110 at the core piece 406 is entirely linear and linear and may also be chamfered as shown to assist seating of the bobbin 402 in the position and orientation desired, .

Core piece 406 may be manufactured from known magnetic materials according to known processes. Core pieces 408 (FIGS. 29-31) may be manufactured as essentially the same piece as core piece 406 in the embodiment considered.

Referring now to Figures 27 and 28, bobbin 402 is fabricated from an electrically non-conductive or insulative material and generally includes an upper flange 440, a tubular body 442, a lower flange 444, and a connection portion 446. [ . The flange 440 defines a primary winding or coil according to known methods and techniques and a winding space 448 for receiving a secondary winding or coil. The coil or winding is terminated or connected to one of the plurality of electrically conductive pins 450, 452, 454, 456 provided in the connection portion 446. [ The pins 450, 452, 454 and 456 generally extend downwardly from the connecting portion 446 and extend generally parallel to the longitudinal axis (not shown in FIG. 27 but similar to the axis 158 shown in FIG. 4) do.

27, one of the fins, that is, the pin 450 is a ground pin, which, unlike the other pins, has other pins 452, 454, 452 for connection to the circuit board through the through- 456 extending generally parallel to the axis of the other pins 452, 454, 456 and a component grounding portion 462 extending generally perpendicular to the axis of the other pins 452, 454, 456. In other words, the ground pin 450 includes a right angle bend having a ground portion 462 extending from one side of the right angled bend and a pin substrate portion 460 extending from the other side of the right angled bend. 27, the grounding portion 462 extends parallel to the horizontal top wall 464 of the connecting portion 446 and also parallel to the major surface of the bobbin lower flange 444 While the pin substrate portion 460 extends vertically from the bottom wall 466 of the connecting portion 446. The right angled bend facilitates the connection of the grounding pin 450 to the bobbin 402 as further described below.

Flanges 440 and 444 each include a central opening 468 that communicates with the hollow interior of tubular portion 442. The central opening 468 cooperates with the protrusion 120 of the magnetic core piece 406 (Figs. 25 and 26) when the bobbin 402 is assembled to the core piece 406.

29, the ground portion 462 of the ground pin 450 is generally located alongside the major surface of the bobbin flange 440 and is electrically conductive using a conductive epoxy 470 to ensure electrical connection thereto And can be adhered in place.

30, the bobbin 402 may be assembled with the core piece 406 and the openings 468 (shown in FIG. 31) in the bobbin 402 to guide the pieces in the proper orientation The bobbin 402 is sandwiched between the core pieces 406 and 408 using the projections 120 (Figs. 25 and 26) in the core pieces 406 and 408 Piece 408 is also assembled. The magnetic core pieces 406 and 408 may be gapped from each other when assembled to the bobbin 402 in any manner known in the art.

Compared to the first exemplary embodiment, the connection of the component grounding portion 462 and the bobbin is provided with fewer fabrication steps than with the traditional provision of the magnetic core piece 406, while providing a slightly simpler shape, Can be reliably achieved at a lower cost.

Significant improvements in performance have been observed, as compared to conventional transformer components having a wire connected to the magnetic core at one end and a wire connected to an electrically quiet node at the opposite end. Comparative examples of such conventional transformer components and direct current resistance (DCR) of the above-described embodiment are shown in Table 1 below. In Table 1, solution A refers to an embodiment of component 100, solution B refers to an embodiment of component 200 or 300, solution C refers to an embodiment of component 400 described above It says.

Sample
number DCR (k) between core and ground pin Traditional methods Solution A Solution B Solution C One 11.20 4.69 3.25 2.78 2 14.50 3.14 2.26 2.73 3 10.26 3.75 1.69 2.58 4 11.98 3.88 2.42 2.71

Figure 32 is a comparative ground resistance chart of components manufactured according to an embodiment of the present invention and conventional transformer components. In Figure 32, invention A refers to an embodiment of a component 100, invention B refers to an embodiment of a component 200 or 300, and invention C refers to an embodiment of the component 400 described above It says.

Benefits and advantages of the inventive concept of the present invention will now be apparent in light of the disclosed exemplary embodiments.

A bobbin provided with a plurality of electrically conductive pins; And at least one of the electrically conductive fins includes a substrate pin portion and a component ground section extending substantially perpendicular to the substrate fin portion. An embodiment of a circuit board transformer component, which is a ground pin, is disclosed.

Optionally, the bobbin may include a connecting portion having a rear wall, and the component grounding section of the grounding pin may extend perpendicularly to the rear wall. The magnetic body may include a first magnetic core piece, wherein the first magnetic core piece includes a groove formed in the front edge and the front edge. The component grounding section of the grounding pin may be received within the groove. A conductive epoxy fixes the component grounding section to the first magnetic core piece.

Optionally, the bobbin may also include a connection portion having a top wall, and the component ground section of the ground pin may extend alongside the top wall. The magnetic body may include a first magnetic core piece, and the first magnetic core piece may include a base and side walls extending upwardly from the base. The component grounding section may extend toward the side wall. Conductive epoxy can secure the component grounding section to the side wall of the first core piece.

The bobbin may optionally include a connecting portion having a sidewall and the component grounding section of the grounding pin may extend alongside the sidewall. The magnetic body may include a first magnetic core piece, and the first magnetic core piece may include a tapered section along a forward edge and a portion thereof. The component grounding section may extend toward the tapered section. The sidewall may extend from the tapered section and the conductive epoxy may secure the component grounding section to the side wall of the tapered section.

Optionally, the bobbin may further comprise at least one flange, and the component ground section may extend parallel to the at least one flange. The component grounding section may extend alongside the at least one flange. Conductive epoxy can secure the component grounding section to at least one flange.

Optionally, the magnetic body may comprise a first magnetic piece and a second magnetic piece interposing a bobbin. The bobbin may include a first flange, a second flange, and a winding space therebetween, and the connecting portion may extend adjacent one of the first and second flanges. The plurality of pins may extend from the connector portion in a row. The ground pin may be located at the end of the row, or the ground pin may be positioned adjacent to at least two other pins of the row. The bobbin may also include a first flange, a second flange, and a tubular portion extending therebetween. The tubular portion may define an axis and the substrate pin portion may extend parallel to the axis.

An embodiment of a circuit board transformer component is also disclosed. The transformer component includes a connector portion provided with a plurality of electrically conductive pins and a bobbin defining a winding space; At least one magnetic body assembled to a bobbin, wherein at least one of the electrically conductive fins is a ground pin comprising a substrate fin portion and a component ground section extending substantially perpendicular to the substrate fin portion; And a conductive epoxy securing the component grounding section to at least one of the magnetic body and the bobbin.

A method of manufacturing a circuit board transformer component is also disclosed. The method includes providing a connector portion provided with a plurality of electrically conductive fins and a bobbin defining a winding space, wherein at least one of the electrically conductive fins includes a substrate ground portion Wherein the ground pin is a ground pin. Assembling the bobbin with at least one magnetic body; And securing the component grounding section to at least one of the magnetic body and the bobbin using a conductive epoxy.

This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including the manufacture and use of any device or system and performing any of the contained methods use. The patentable scope of the invention is defined by the claims, and may include other examples that come to those skilled in the art. Such another example would be within the scope of the claims if it had a structural element that did not differ from the literal language of the claims or if it contained an equivalent structural element that was not substantially different from the literal language of the claims .

Claims (25)

In a circuit board transformer component,
A bobbin provided with a plurality of electrically conductive pins; And
At least one magnetic body assembled to the bobbin,
Wherein at least one of the electrically conductive fins comprises a ground pin comprising a substrate pin portion and a component ground section extending substantially perpendicular to the substrate pin portion
Circuit board transformer components. The method according to claim 1,
The bobbin includes a connecting portion having a rear wall, and a component grounding section of the grounding pin extends perpendicularly to the rear wall
Circuit board transformer components. 3. The method of claim 2,
Wherein the magnetic body comprises a first magnetic core piece, the first magnetic core piece comprising a front edge and a groove formed in the front edge,
Circuit board transformer components. The method of claim 3,
The component grounding section of the ground pin is received within the groove
Circuit board transformer components. 5. The method of claim 4,
Further comprising a conductive epoxy securing the component grounding section to the first magnetic core piece
Circuit board transformer components. The method according to claim 1,
Wherein the bobbin includes a connecting portion having a top wall, the component grounding section of the ground pin extending alongside the top wall
Circuit board transformer components. The method according to claim 6,
The magnetic body includes a first magnetic core piece, the first magnetic core piece including a base and a side wall extending upwardly from the base
Circuit board transformer components. 8. The method of claim 7,
The component grounding section extends toward the side wall
Circuit board transformer components. 9. The method of claim 8,
Further comprising a conductive epoxy securing the component grounding section to a sidewall of the first core piece
Circuit board transformer components. The method according to claim 1,
Wherein the bobbin includes a connecting portion having a side wall, the component grounding section of the ground pin extending alongside the side wall
Circuit board transformer components. 11. The method of claim 10,
Wherein the magnetic body comprises a first magnetic core piece, the magnetic core piece including a forward edge and a tapered section along a portion of the forward edge
Circuit board transformer components. 12. The method of claim 11,
The component grounding section extends toward the tapered section
Circuit board transformer components. 13. The method of claim 12,
A sidewall extending from the tapered section, and a conductive epoxy for securing the component grounding section to the sidewall of the tapered section
Circuit board transformer components. The method according to claim 1,
Wherein the bobbin further comprises at least one flange, the component grounding section extending parallel to the at least one flange
Circuit board transformer components. 15. The method of claim 14,
The component grounding section extends alongside the at least one flange
Circuit board transformer components. 16. The method of claim 15,
Further comprising a conductive epoxy securing the component grounding section to the at least one flange
Circuit board transformer components. The method according to claim 1,
Wherein the magnetic body includes a first magnetic piece and a second magnetic piece sandwiching the bobbin
Circuit board transformer components. The method according to claim 1,
The bobbin further includes a first flange, a second flange, and a winding space between the first flange and the second flange, wherein the connecting portion extends adjacent to one of the first flange and the second flange felled
Circuit board transformer components. The method according to claim 1,
The plurality of pins extend in rows from the connector portion
Circuit board transformer components. 20. The method of claim 19,
The ground pin is located at the end of the row
Circuit board transformer components. 21. The method of claim 20,
Wherein the ground pin is positioned adjacent to at least two other pins of the row
Circuit board transformer components. The method according to claim 1,
The bobbin further includes a first flange, a second flange, and a tubular portion extending between the first flange and the second flange
Circuit board transformer components. 23. The method of claim 22,
The tubular portion defining an axis and the substrate pin portion extending parallel to the axis
Circuit board transformer components. A circuit board transformer component comprising:
A bobbin defining a connector portion and a winding space provided with a plurality of electrically conductive fins;
At least one magnetic body assembled to the bobbin, wherein at least one of the electrically conductive fins is a ground pin comprising a substrate fin portion and a component ground section extending substantially perpendicular to the substrate fin portion; And
And a conductive epoxy securing the component grounding section to at least one of the magnetic body and the bobbin
Circuit board transformer components. A method of manufacturing a circuit board transformer component,
Providing a bobbin defining a connector portion and a winding space defining a plurality of electrically conductive pins, wherein at least one of the electrically conductive fins includes a substrate pin portion and a component grounding section extending substantially perpendicular to the substrate pin portion A ground pin having a first end;
Assembling the bobbin with at least one magnetic body; And
And securing the component grounding section to at least one of the magnetic body and the bobbin using a conductive epoxy
Method of manufacturing a circuit board transformer component.

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