TWM467993U - A transformer bobbin structure - Google Patents

Description

Transformer bobbin structure

This creation is a transformer bobbin structure, in particular, a structure that can save the pin to reduce the volume of the transformer wrap.

Transformer is one of the indispensable electronic components in electronic products, and the main function of the transformer is to convert the driving voltage in the electronic circuit, such as a power transformer that can reduce the mains voltage, and an external power supply such as a notebook computer. In the AC Adapter module, transformers that increase or decrease the operating voltage, etc., so the specifications of the transformers are quite complicated, and there are few fixed specifications. Most of them are tailored to the needs of customers.

Because the transformer will generate electromagnetic wave interference during its voltage conversion action, in order to prevent the electromagnetic wave interference of the transformer, a grounded metal piece or metal mesh is generally wrapped between the coils of the transformer to isolate the electromagnetic wave signal. However, this method will have a manual manufacturing process in the process, so that one or two sets of shielding coils can be wound outside the working coil of the transformer, thereby reducing the manual process of the transformer. However, the two terminals of the shield coil of the transformer need to be connected to the pins of the transformer to fix the shield coil and make it electrically connect to the ground. Therefore, it is necessary to design two pins for the shield coil.

In order to cope with the trend of miniaturization and thinning of electronic components, the design of the transformer bobbin is getting smaller and smaller, and generally one transformer has multiple sets of coil input and output, and each set of wires The loop must also be connected to the two bobbin pins, and the isolation distance between the pins and the traces of the coils must meet the isolation distance of the safety regulations. However, this is undoubtedly quite contradictory to the transformer. In addition, there are more shielded coil pins that prevent electromagnetic interference. The shield pins and other output pins must be separated from each other as much as possible. Therefore, the transformer is limited by the distance between the shield pins and the coil. Reduce the volume.

To this end, the creator of the case designed a transformer winding frame structure, which does not need to be affected by the shielding pins, and can reduce the structure of the transformer winding frame as much as possible under the condition of complying with safety regulations.

In order to achieve the above purpose, the present invention provides a transformer winder structure, comprising a base having a bottom plate and a top plate, wherein the top plate and the bottom plate are provided with a continuous perforation at the center for at least one core extending into the through hole, and the top plate is Forming a bobbin column between the bottom plates, wherein at least one first side coil, at least one second side coil and at least one shielding coil are wound on the bobbin column; the plurality of first side pins are disposed on the first side of the bottom plate The outer edge of the first side coil is electrically connected to the first side legs of the two sides; the plurality of second side pins are disposed at the outer edge of the second side of the bottom plate, and the second side coil The two terminals are electrically connected to the second side legs of the two of the legs; and at least one of the hanging wire protrusions is disposed on the top plate, and one of the leading ends of the shielding coil is wound around the hanging wire column, wherein the shielding coil can be wound Between the first side coil and/or the second side coil, and the other lead end of the shield coil is connected to one of the pins of the bottom plate for isolating electromagnetic waves, and only one end of the shield coil is connected to the bottom plate On the support feet, in addition to reducing the shield connection The setting of the foot reduces the size of the transformer, and there is no safety concern because it is far away from other pins.

10‧‧‧ Pedestal

11‧‧‧ top board

12‧‧‧floor

13‧‧‧through holes

14‧‧‧winding column

15‧‧‧First side pin

16‧‧‧Second side pin

17‧‧‧ hanging wire stud

18‧‧‧V-shaped wiring gap

19‧‧ ‧ baffle

20‧‧‧Line gap

21‧‧‧Line channel

22‧‧‧Bumps

30‧‧‧First side coil

31‧‧‧Second side coil

32‧‧‧Shield coil

40‧‧‧ iron core

41‧‧‧ center column

42‧‧‧ side column

43‧‧‧Connecting plate

50‧‧‧ Grounding clip

51‧‧‧through holes

52‧‧‧Y-shaped end

60‧‧‧Insulation cover

The first picture is a three-dimensional schematic diagram of the transformer winding frame.

The second figure is a three-dimensional view of another angle of the transformer winding frame.

The third figure is a three-dimensional schematic diagram of the wound coil of the creation transformer.

Figure 4 is a schematic cross-sectional view of the coil trace of Figure 3.

Figure 5 is a three-dimensional exploded view of the transformer winding frame.

In order to enable your review board to further understand the techniques, means and effects of this creation in order to achieve the intended purpose, please refer to the following detailed description and drawings of this creation, and believe that the purpose, characteristics and characteristics of this creation can be An in-depth and specific understanding is provided, however, the drawings are provided for reference and description only and are not intended to limit the invention.

This design design a transformer winding frame, mainly to solve the problem that the shielded electromagnetic wave coil occupies two electric pins, and the short distance between the electric pin connected to the shield coil and other electric pins needs to meet the long safety distance. Therefore, please refer to FIG. 1 and FIG. 2 for the embodiment of the transformer winding of the present invention. FIG. 1 is a perspective view of an embodiment of the transformer winding frame of the present invention, and FIG. 2 is a schematic diagram of the transformer winding of the present invention. A perspective view of another angle of the frame.

In the embodiment of the present invention, the transformer bobbin includes a base 10 in an I-shaped shape, and has a top plate 11 and a bottom plate 12. The center of the base 10 is provided with a continuous through hole 13 extending from the top plate 11 to the bottom plate 12. At least one core may extend into the through hole 13 as described above. For example, two symmetrical E-shaped cores in the embodiment of FIG. 5, the center pillars of the E-shaped core may extend through the top plate 11 and the bottom plate 12 respectively. The holes 13 are combined with each other.

A bobbin column is formed between the top plate 11 and the bottom plate 12 of the base 10 14. The at least one first side coil 30, the at least one second side coil 31, and the at least one shield coil 32 (shown in the embodiments of FIGS. 3 and 4) are wound around the bobbin column 14. The through hole 13 may be non-circular. For example, the through hole 13 in the first and second embodiments has an asymmetrical elliptical shape, which allows an automatic winding machine to rotate the arm (not shown). The through hole 13 is rotated to perform automatic winding of the coil of the bobbin.

Please refer to Fig. 1 and Fig. 2 and please refer to Fig. 3 and Fig. 4 together. Fig. 3 is a perspective view of the wound coil of the transformer winding frame, and Fig. 4 is the third figure. Schematic diagram of the coil trace. The first side and the second side respectively extend in opposite directions of the bottom plate 12, and a plurality of first side pins 15 are disposed on the outer side surface of the first side opposite to the bobbin column 14, and the first side coil is The two leading ends of the 30 are respectively wound on the first side pins 15 of the two of them, so that the first side coils 30 are electrically connected to the first side pins 15. On the outer side surface of the bottom plate 12 opposite to the bobbin column 14, a plurality of second side pins 16 are disposed, and the two leading ends of the second side coil 31 are respectively wound around the second of the two sides. The second side coil 31 is electrically connected to the second side pin 16 on the side pin 16 .

Further, at least one hanging wire stud 17 is further disposed on the outer surface of the top plate 11 opposite to the bobbin column 14. As in the embodiment of Fig. 1, the hanging wire studs 17 have two square columns. In other embodiments, the hanging wire studs 17 may be in the shape of any other wrapable wire, such as a cylindrical shape, an elliptical column shape or an L shape. . . Etc., and the top plate 11 between the two hanging wire studs 17 is provided with a V-shaped wire notch 18.

The shield coil 32 can be wound between the outer side of the first side coil 30 and/or the second side coil 31. In the embodiment of FIG. 4, the shield coil 32 is wrapped on the first side and the second side. The outermost side of the side coil. One of the lead ends of the shield coil 32 is The V-shaped wire notch 18 is wound around one of the hanging wire studs 17, and the other leading end of the shielding coil 32 is connected to one of the electric pins of the bottom plate 12.

Of course, another embodiment of the present invention may also have two sets of shielding coils 32 respectively covering the middle and the outermost sides of the first side coil 30 and the second side coil 31, since the shielding coil 32 functions to isolate the transformer. Electromagnetic wave interference, so the hanging wire stud 17 of the present invention can be disposed on the top plate 11 at the same end as the first side pin 15. In another embodiment, one of the two sets of shielding coils 32 is wound around the two hanging wire protrusions 17 of the top plate 11 through the V-shaped wire notch 18, and the two sets of shielding coils 32 are another. The terminals are electrically connected to one of the grounded first side pins 15 together.

The design of the hanging wire stud 17 of the present invention can reduce the shielding coil 32 from being removed to the pin of the bottom plate 12, and reduce the design of the electric pin to reduce the volume of the winding frame, and the hanging wire is convex. The post 17 is disposed on the top plate 11 and is far from the electrical pin of the second side pin 16 of the bottom plate 12 to reduce the safety problem between the shield coil 32 and the other coils.

Referring to FIG. 1 and FIG. 2 again, the top plate 11 and the bottom plate 12 of the transformer winding frame of the present invention are respectively provided with two baffles 19 facing away from the outer surface of the bobbin column 14, and in the embodiment, The two baffles 19 of the top plate 11 or the bottom plate 12 are V-shaped with an opening outward, and the two baffles 19 can be disposed between the two cores. The first side pin 15 and the second side pin 16 are respectively disposed outside the two baffles 19 of the bottom plate 12, and each of the first side pins 15 is provided with a wire gap at the bottom plate 12 between the first side pins 15. 20, the first side coil 30 can be re-wound connected to the first side pin 15 via the wire notch 20. A routing channel 21 is formed at the center of the second side of the bottom plate 12, and the second side coil 31 is passed. The wire channel 21 is provided with a plurality of branching lugs 22 on the surface of the bottom plate 12 of the wire channel 21 facing away from the bobbin column 14 for allowing the second side coil 31 to first pass the branching block 22 After the split line, the upper side is wound and connected to the second side pin 16.

Please refer to FIG. 5 , which is an exploded perspective view of the transformer winding frame. In another embodiment of the present invention, the core body 40 is further provided with an E-shape having a center pillar 41 and two side pillars 42 . And connecting the central column 41 and the connecting plate 43 of the side post 42 , the two cores 40 are coupled to the outer side of the bobbin, and the central post 41 is respectively inserted into the through hole 13 from the top plate 11 and the bottom plate 12, and the two side posts 42 are The outer side of the bobbin 14 is located between the first side and the second side, and the connecting plate 43 is received between the V-shaped plates 19.

The present invention further includes a ground clip 50 for electrically connecting the core 40 to the ground. In the embodiment of the present invention, the ground clip 50 is L-shaped, and one end is provided with a consistent hole 51 for penetrating a ground. The grounding clip 50 is electrically connected to the grounding end, and the grounding clip 50 of the broken line in FIG. 5 is a schematic diagram of the unplugged electrical pin, and the solid grounding clip 50 is inserted. Schematic diagram of the electric pin. The other end of the grounding clip 50 has a Y-shaped end portion 52 extending in the direction of the center pillar 41 of the core 40 and extending in the direction of the through hole 13, and the grounding clip 50 has elasticity when the core 40 is coupled to the bobbin. The ground clip 50 can be electrically contacted to the side edge of the core 40. Therefore, the core 40 can also be electrically connected to the ground through the ground clip 50 to form an electromagnetic wave shielding effect.

In order to increase the safety distance between the core 40 and the other electrical pins, the present invention further includes an insulating cover 60 which is inserted from the outer side of the bottom plate 12 toward the top plate 11 to cover the connecting plate of the core 40 at the bottom plate 12. The outer sides of the 43 and the two side columns 42 extend even to the outside of the two side columns 42 of the core 40 at the top plate 11.

The job is to make the shield coil reduce the occupation of the electric pin by the structure of the transformer winding bobbin, so as to reduce the volume of the transformer, and there is no need to specially consider the safety distance between the shield coil and other output coils. The disclosed technology provides a design that is quite different from the conventional ones, and can improve the overall use value. It has not been seen in the publication or public use before the application. It has already met the requirements of the new patent, and has filed a new patent application according to law.

10‧‧‧ Pedestal

11‧‧‧ top board

12‧‧‧floor

13‧‧‧through holes

14‧‧‧winding column

15‧‧‧First side pin

16‧‧‧Second side pin

17‧‧‧ hanging wire stud

18‧‧‧V type wiring gap

19‧‧ ‧ baffle

20‧‧‧Line gap

21‧‧‧Line channel

Claims (12)

A transformer winding frame structure includes: a base having an I-shape, a top plate and a bottom plate, wherein the top plate and the bottom of the bottom plate are provided with a continuous perforation for at least one core to extend into the through hole, And forming a bobbin column between the top plate and the bottom plate, wherein at least one first side coil, at least one second side coil and at least one shielding coil are wound on the bobbin column; the plurality of first side pins are provided At the outer edge of the first side of the bottom plate, the two leading ends of the first side coil are electrically connected to the first side pins of the two of the bottom plates; the plurality of second side pins are disposed on the bottom plate a second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the second side of the two The shield coil is wound between the first side coil and/or the second side coil, and the other lead end of the shield coil is electrically connected to a ground end, so that the shield coil is wound between the first side coil and/or the second side coil The shield coil is used to isolate electromagnetic waves. The transformer bobbin structure of claim 1, wherein the hanging wire stud is disposed on the top plate on the same side of the first side pins. The transformer bobbin structure of claim 1, wherein the two of the hanging wire studs are disposed on the top plate and a V-shaped wire gap is formed at a top plate between the two hanging wire studs. The lead end of the shielding coil is passed through the V-shaped notch and then wound onto the hanging wire stud. The transformer bobbin structure of claim 1, wherein one of the shielding coils is connected to the hanging wire stud, and the other end is connected to one of the first side pins of the bottom plate. And the pin is electrically connected to the ground. The transformer bobbin structure according to claim 1, wherein the hanging line stud is in a square column shape, a column shape, an elliptical shape or an L shape. The transformer bobbin structure according to claim 1, wherein the outer surface of the top plate and the bottom plate of the base are respectively provided with two baffles, and the iron core can be accommodated between the two baffles. The transformer bobbin structure of claim 6, wherein the first side pins are disposed on an outer side of the baffle, and each of the first side pins is provided with one at each bottom plate. A wire gap is formed for the first side coil to be connected to the first side pin via the wire gap. The transformer bobbin structure of claim 1, wherein the second side legs are disposed outside the baffle, and a wire channel is formed at a center of the bottom plate of the second side pin. The second side coil is electrically connected to the second side pin via the routing channel. The transformer bobbin structure of claim 8, wherein the two sides of the routing channel are provided with a plurality of branching lugs for one or more of the second side coils. The wires are individually guided through the branching lugs and then connected to the second side pins. The transformer bobbin structure of claim 1, further comprising a grounding clip, one end electrically connected to the grounding end, and the other end electrically contacting the iron core, so that the iron core is grounded to form a shielding electromagnetic wave Effect. The transformer bobbin structure of claim 10, wherein the core is E-shaped, having a center post extending into the through hole, and one end of the ground clip is electrically connected to the first side of one of the grounds. The pin extends to the center post to electrically contact the core. The transformer bobbin structure of claim 1, further comprising an insulating cover covering the core at the bottom plate to increase a safety distance between the core and the other electrical pins.