TWI711060B - High current pin structure of vertical resonant transformer - Google Patents

Abstract

A vertical resonant transformer high-current pin structure. The wire frame is provided with a first partition plate, a second partition plate and a third partition plate are provided on both sides, and the third partition plate is provided with a wiring part. A first slot is formed between the plate and the second separating plate to wind the first coil, and a second slot is formed between the first separating plate and the third separating plate to wind the second coil; the insulating layer covers the first coil and The first partition plate is wrapped to the root of the first partition plate to increase the creepage distance between the first coil and the second coil; the shell is sleeved on the second partition plate, covering the first coil and extending to the first Separate the partition, the first coil is connected to the connection terminal of the shell cover, the connection terminal is connected to the circuit main board, the second coil extends to the wiring part, and is connected to the circuit main board through the adapter card to increase the distance between the wiring part and the connection terminal. The circuit main board meets the requirements of safety regulations, and the riser card can adopt a double-sided board to greatly reduce the circuit impedance, which can achieve the effect of using a double-sided board with the circuit board and reduce the manufacturing cost.

Description

High current pin structure of vertical resonant transformer

The present invention relates to a vertical resonant transformer, in particular to a high current pin structure of a vertical resonant transformer that simplifies the circuit layout of the circuit board, naturally increases the distance between the primary side and the secondary side, and increases the insulation and shielding effect.

The conventional vertical resonant transformer, such as the Republic of China Patent Publication No. I463508 "Improved Structure of Transformer", is covered with a wire frame on at least a part of a predetermined iron core group, and the iron core group has a through The magnetic circuit of the bobbin is provided with a wire slot and at least one connecting portion protruding outwardly on the outer periphery of the bobbin. A plurality of grooves with lateral openings are provided on the connecting portion, and a coil is wound around the wire In the wire slot of the rack, the coil has at least a plurality of outlet ends, and each outlet end passes through different grooves, and is embedded in each groove near the side opening by using a plurality of positioning pins to align each outlet The wire ends are tightly positioned, a shell is sleeved on the outer circumference of the coil to form a gap between the coil and the iron core assembly, and at least one hollow opening is provided on the shell to make the outer circumference of the coil The airflow on the side is exposed to the outside to enhance the overall heat dissipation effect.

And, such as the Republic of China Patent Publication No. M486127, No. M504337 and other patent cases, all are to increase the insulation effect of the transformer. However, the above-mentioned transformers, in actual use, have the following shortcomings that need to be improved:

1. The structure of insulating shells such as shell cover is too complicated. Although it has a good insulation effect, in order to meet the requirements of miniaturization and light weight of the transformer, the structure of these insulating shells must conform to the structure of the existing transformer, resulting in a rather complicated structure Moreover, the fitting of the insulating shell and the wire frame takes up a considerable amount of space, which limits the extremely precious winding area.

2. The demand for the miniaturization of the transformer volume mainly corresponds to the miniaturization of electronic products. Among them, the area of the circuit board is becoming more and more miniaturized. In the above-mentioned patents, the pins of the transformer are arranged in two rows in parallel. It can be clearly seen that the width of the two rows of pins is greater than the width of the transformer. The reason is that there are many pin holes on the circuit board, and copper foil is arranged around the pin holes. There are corresponding lines. In terms of safety requirements, the distance between each pin hole and copper foil has a certain limit. As described in this paragraph, the transformer has a pin setting method with a width larger than that of the transformer on both sides. Even if the size of the transformer is reduced, for the circuit board, the safety distance is also shortened accordingly, falling into the trap of transformer miniaturization.

In view of the above-mentioned shortcomings of conventional use, the inventor researched and improved ways to solve the above-mentioned shortcomings, and finally came to the present invention.

The main purpose of the present invention is to provide a high-current pin structure of a vertical resonant transformer that simplifies the circuit layout of the circuit board.

The secondary objective of the present invention is to provide a vertical resonant transformer high current pin structure that increases the creepage distance between the coils and simplifies the insulation structure.

Another object of the present invention is to provide a vertical resonant transformer high current pin structure that naturally increases the distance between the primary side and the secondary side and does not cross other adjacent coils.

In order to achieve the above objectives and effects, the technical means adopted by the present invention include: a bobbin, an iron core set, a first coil, a second coil, an insulating layer and a shell, among which: an iron core set, A plurality of iron cores are relatively combined; a wire frame is coated on at least part of the aforementioned iron core group, so that the iron core group has a magnetic circuit through the wire frame, and the wire frame is provided with a first partition plate, and the two sides are respectively It has a second partition board and a third partition board. One side of the third partition board has a wiring part. A first line groove is formed between the first partition board and the second partition board. A second wire slot is formed between the partition plate and the third partition plate; a first coil is wound in the aforementioned first wire slot and extends a first outlet end; a second coil is wound in the aforementioned first wire slot In the two wire slots, a second outlet end extends; an insulating layer covering the first coil and the first partition plate, and extends to the root of the first partition plate; and, a shell covering The second partition plate of the aforementioned wire frame covers the first coil and extends to the first partition plate. One side of the shell cover has an extension part, and a plurality of connecting terminals extend on both sides of the extension part. It’s a vertical arrangement; in this way, the aforementioned first outlet end is connected to the connection terminal, which is connected to the circuit board through the riser card, and the second outlet end extends to the wiring portion, and the connection terminal is directly connected to the circuit board, naturally increasing the connection portion and The distance between the connecting terminals can achieve a distance that can meet safety regulations when the transformer is miniaturized, and the creepage distance between the first coil and the second coil is increased with an insulating layer.

According to the above structure, the other side of the third partition plate has a first fixing part corresponding to the connection part, and the side of the second partition plate corresponding to the first fixing part is provided with a second fixing part, the first fixing part It forms a coplanar plane with the second fixing part, so that the wire rack can be horizontally arranged on the circuit main board.

According to the above structure, the first fixing portion is provided with positioning terminals perpendicular to the aforementioned connecting terminals.

According to the above structure, the surface of the second partition plate is provided with a plurality of first ring portions, the inner surface of the shell is provided with a plurality of second ring portions, and the shell is sleeved on the wire frame so that the first ring portion and the first ring portion Staggered meshing between the two ring parts increases the creepage distance.

According to the above structure, a plurality of control pins are provided on one side of the connection part.

According to the above structure, the connecting part is provided with a plurality of grooves, and a fixing block is separately provided. The fixing block is extended with a plurality of positioning pins, and the second outlet ends of the second coil respectively pass through the grooves and use positioning The pin presses the second outlet end to form a positioning.

According to the above structure, the grooves are provided with a connecting portion near the opening, and the positioning pins are provided with opposite butting portions which can be connected with the connecting portion on the side of the positioning pins, so that the positioning pins can be positioned in the grooves.

According to the above structure, the insulating layer is insulating tape or insulating glue.

In order to obtain a more detailed understanding of the above-mentioned purposes, effects and features of the present invention, the descriptions are as follows according to the drawings:

1‧‧‧Wire stand

10‧‧‧Central hole

11‧‧‧First divider

12‧‧‧Second divider

121‧‧‧First Ring

122‧‧‧Second fixed part

13‧‧‧The third divider

14‧‧‧Wiring Department

141‧‧‧Control pin

142‧‧‧Groove

143‧‧‧Joint

15‧‧‧The first fixed part

151‧‧‧Locating terminal

16‧‧‧First trunking

17‧‧‧Second wire duct

18‧‧‧Fixed block

181‧‧‧Locating pin

182‧‧‧Docking Department

2‧‧‧First coil

21‧‧‧First outlet

3‧‧‧Second coil

31‧‧‧Second outlet

4‧‧‧Insulation layer

5‧‧‧Shell

50‧‧‧Perforation

51‧‧‧Extension

52‧‧‧Connecting terminal

53‧‧‧Second Ring

6a‧‧‧Iron core set

6‧‧‧Iron core

61‧‧‧Central pillar

62‧‧‧Side column

63‧‧‧Accommodation space

64‧‧‧Insulating tape

7‧‧‧Circuit motherboard

71‧‧‧Adapter card

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a partial diagram of the components of the preferred embodiment of the present invention.

Figure 4 is a combination diagram 1 of the preferred embodiment of the present invention.

Figure 5 is the second combination diagram of the preferred embodiment of the present invention.

Figure 6 is a cross-sectional view of the preferred embodiment of the present invention when in use.

Referring to Figures 1 to 3, it can be seen that the structure of the present invention mainly includes: a bobbin 1, a first coil 2, a second coil 3, an insulating layer 4, a casing 5 and an iron core group 6 , Wherein: the wire frame 1 has a central hole 10, the wire frame 11 has a first partition plate 11, two ends respectively have a second partition plate 12 and a third partition plate 13, the second The surface of the partition plate 12 is provided with a plurality of first ring portions 121; the third partition plate 13 has a wiring portion 14 on one side, and a plurality of control pins 141 are provided on the wiring portion 14 side. A plurality of grooves 142 are provided. The grooves 142 have a joint portion 143 near the opening. The grooves 142 are assembled by a fixing block 18, and the fixing block 18 extends with a plurality of positioning pins 181. The positioning pins The opposite side of 181 is provided with a butting portion 182 that can be connected to the coupling portion 143, so that each positioning pin 181 can be positioned in the groove 142; the other side of the third partition plate 13 has a corresponding connection portion 14 The first fixing portion 15 is provided with a positioning terminal 151; the second partition plate 12 is provided with a second fixing portion 122 on the side corresponding to the first fixing portion 15, and the first fixing portion 15 and the second fixing portion 15 The fixing portion 122 forms a common plane, so that the wire frame 1 can be horizontally arranged on the circuit main board 7; a first wire slot 16 is formed between the first partition plate 11 and the second partition plate 12, and the first partition plate A second wire groove 17 is formed between the third partition plate 13 and 11.

The first coil 2 is wound in the aforementioned first slot 16 and extends a first outlet end 21.

The second coil 3 is wound in the aforementioned second wire slot 17 and extends a second outlet end 31.

The insulating layer 4 is an insulating tape or an insulating glue, and covers the first coil 2 and the first partition plate 11, and the insulating layer 4 extends to the root of the first partition plate 11.

The shell cover 5 is sleeved on the second partition plate 12 of the aforementioned bobbin 1 and covers the first coil 2, and has an extension 51 on one side, and a plurality of connecting terminals 52 extend on both sides of the extension 51. 52 and the wire frame 1 are arranged perpendicular to each other; and, the iron core set 6a is formed by the two symmetrical iron cores 6 opposed to each other, and a central pillar portion 61 is provided in the middle of each iron core 6, and the central pillar portion 61 is at least A corresponding side column portion 62 is provided on the two sides, and an accommodation space 63 is naturally formed between the center column portion 61 and the side column portion 62.

When the above components are combined, (see Figures 4 and 5 for assistance) the first coil 2 and the second coil 3 are respectively wound in the aforementioned first slot 16 and second slot 17, using insulating tape or insulating glue, etc. At the same time, the first coil 2 and the first partition plate 11 are covered, and the shell cover 5 is set on the second partition plate 12 of the bobbin 1 and covers the first coil 2. At the same time, the second coil of the second coil 3 The wire ends 31 respectively pass through the grooves 142 on the connecting portion 14, the positioning pins 181 of the fixing block 18 are respectively sleeved in the grooves 142, and the positioning pins 181 are used to press the second outlet end 31 to form a positioning; One of the iron cores 6 of the group 6a passes through the perforation 50 of the shell 5 and the central hole 10 of the wire frame 1 with the central column part 61, the other iron core 6 directly passes through the central hole 10 of the frame 1, and the iron core 6 The accommodating space 63 accommodates the wire frame 1 and the housing 5 so that the two iron cores 6 can use the center pillar portion 61 and the side pillar portion 62 to form a magnetic conductive circuit through the wire frame 2.

The feature of the invention to increase the creepage distance is that the insulating layer 4 simultaneously covers the first coil 2 and the first separator 11, and the insulating layer 4 increases the creepage distance between the first coil 2 and the second coil 3. And, when the housing cover 5 is sleeved on the wire frame 1 to cover the second partition plate 12 in the same width, the first ring portion 121 of the second partition plate 12 and the second ring portion 53 of the housing cover 5 are butted with each other. The creepage distance between the wire frame 1 and the housing 5 is effectively increased. With the above structure, the overall structure of the present invention can be effectively simplified while meeting the requirements of safety regulations.

The present invention simplifies the circuit layout of the circuit board 7 and reduces the mutual interference of components. The feature is that: (see Figure 6 for assistance) the first outlet terminal 21 of the first coil 2 is connected to the connection terminal 52, and at the same time, during the connection process, Will not pass through the second coil 3, but can prevent the magnetic field of the second coil 3 from interfering with the first outlet end 21; the second outlet end 31 of the second coil 3 extends to the connection part 14, and the connection part 14 is connected and switched The card 71 connects the second outlet end 31 of the second coil 4 to the riser card 71, together with the present invention and the riser card 71, is connected to the circuit main board 7, and the connection terminal 52 is directly connected to the circuit main board 7, because the connection terminal 52 is arranged on both sides (see Fig. 2 and Fig. 3 for assistance). It is not the traditional way of arranging the transformers on both sides. When the circuit board 7 is laid out, it can avoid the two sides’ arrangement to cause too dense pins and avoid the circuit board. The lines on 7 are too dense to reduce signal interference. The circuit main board 7 meets the requirements of safety regulations. The riser card 71 can adopt double-sided boards to greatly reduce the circuit impedance, which can achieve the effect of using double-sided boards with the circuit board 7 and reduce manufacturing costs. .

In summary, the high-current pin structure of the vertical resonant transformer of the present invention is indeed a novel and progressive invention, and I filed an application for a patent for invention according to law; however, the above description is only a preferred embodiment of the present invention. It is explained that all changes, modifications, alterations or equivalent substitutions extended according to the technical means and scope of the present invention should also fall within the scope of the patent application of the present invention.

1‧‧‧Wire stand

10‧‧‧Central hole

11‧‧‧First divider

12‧‧‧Second divider

122‧‧‧Second fixed part

13‧‧‧The third divider

14‧‧‧Wiring Department

141‧‧‧Control pin

142‧‧‧Groove

143‧‧‧Joint

15‧‧‧The first fixed part

151‧‧‧Locating terminal

16‧‧‧First trunking

17‧‧‧Second wire duct

18‧‧‧Fixed block

181‧‧‧Locating pin

182‧‧‧Docking Department

2‧‧‧First coil

21‧‧‧First outlet

3‧‧‧Second coil

31‧‧‧Second outlet

4‧‧‧Insulation layer

5‧‧‧Shell

50‧‧‧Perforation

51‧‧‧Extension

52‧‧‧Connecting terminal

53‧‧‧Second Ring

6a‧‧‧Iron core set

6‧‧‧Iron core

61‧‧‧Central pillar

62‧‧‧Side column

63‧‧‧Accommodation space

64‧‧‧Insulating tape

Claims (8)

A vertical resonant transformer high-current pin structure, which at least includes: an iron core group composed of a plurality of iron cores relatively combined; a wire frame, covering at least a part of the iron core group, so that the iron core group has Through the magnetic circuit of the wire frame, the wire frame is provided with a first partition plate, a second partition plate and a third partition plate are respectively provided on both sides, and a wiring part is provided on one side of the third partition plate, A first line groove is formed between the first partition plate and the second partition plate, and a second line groove is formed between the first partition plate and the third partition plate; a first coil is wound around the first In the wire slot, and extend a first wire outlet; a second coil, wound in the aforementioned second wire slot, and extend a second wire outlet; an insulating layer, covering the first coil and the first branch The partition plate extends to the root of the first partition plate; and, a shell is sleeved on the second partition plate of the aforementioned bobbin and covers the first coil. One side has an extension part, and the extension part extends on both sides There are a plurality of connecting terminals, and the connecting terminals and the wire rack are arranged perpendicular to each other; the aforementioned first outlet end is connected to the connecting terminal, which is connected to the circuit board through the adapter card, the second outlet end extends to the connecting part, and the connecting terminal is directly connected with The circuit board connection naturally increases the distance between the connection part and the connection terminal, achieving a distance that can meet safety regulations while miniaturizing the transformer, and increasing the creepage distance between the first coil and the second coil with an insulating layer. As described in the first item of the scope of patent application, the high current pin structure of the vertical resonant transformer, wherein the other side of the third partition plate is provided with a first fixing part corresponding to the connection part, and the second partition plate corresponds to One side of the first fixing part is provided with a second fixing part, and the first fixing part and the second fixing part form a coplanar plane, so that the wire rack can be horizontally arranged on the circuit main board. According to the high-current pin structure of the vertical resonant transformer described in item 1 of the scope of patent application, the first fixing portion is provided with positioning terminals perpendicular to the aforementioned connecting terminals. As described in the first item of the scope of patent application, the high current pin structure of the vertical resonant transformer, wherein the surface of the second partition plate is provided with a plurality of first ring portions, and the inner surface of the shell cover is provided with a plurality of second ring portions, The shell is sleeved on the wire frame, so that the first ring part and the second ring part are butted with each other, and the creepage distance is increased. For the high-current pin structure of the vertical resonant transformer described in item 1 of the scope of patent application, a plurality of control pins are provided on one side of the connection part. For example, the high-current pin structure of the vertical resonant transformer described in item 1 of the scope of patent application, wherein the connecting part is provided with a plurality of grooves, and a fixing block is separately provided with a plurality of positioning pins extending from the fixing block. The second outlet ends of the two coils respectively pass through the grooves, and the second outlet ends are pressed by the positioning pins to form a positioning. For example, the high-current foot structure of the vertical resonant transformer described in item 6 of the scope of patent application, wherein the grooves have a joint near the opening, and the positioning pins are provided with butt joints that can be connected to the joint. Part, so that each positioning pin can be positioned in the groove. For the high-current pin structure of the vertical resonant transformer described in item 1 of the scope of patent application, the insulating layer is insulating tape or insulating glue.

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