TWM521253U - Improved structure of transformer winding stand - Google Patents

Description

Transformer winding frame improved structure

The present invention is an improved structure of a winding frame of a transformer, in particular, a distance between a lead wire of a large coil and a wound coil, so that the structure of the coil and the lead wire can be surely isolated when the insulating tape is wrapped around the coil.

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.

As shown in FIG. 1 and FIG. 2, respectively, a three-dimensional schematic diagram of a transformer winding bobbin with a wound coil and a side cross-sectional view thereof. The current transformer bobbin 10 uses a winding bobbin with overlapping at least two groups. The coil 14 is, for example, a primary side coil and a secondary side coil, and the outer side surface of the front and rear side bottom plate 12 of the bobbin 10 is provided with a plurality of electrical pins 15 which are divided into a first end electric leg and a second end electric pin, and the coil The lead wires 14" of 14 are electrically connected to the electrical pins respectively. Since the bottom plate 12 is planar, the lead wires 14" of the coils are bound to be staggered with the other sets of winding coils 14 near the bottom plate 12, when When the transformer is used in the high-frequency signal and the high-voltage state, parasitic capacitance may occur between the lead wire 14" of the coil 14 and the other group of wound coils 14 that are staggered, causing the signal to be unstable or short-circuited. phenomenon.

The current solution is to manually put the lead wire of the coil on the isolation sleeve and then wrap the other coils after completing a set of coil windings, so that the lead wires can be isolated from other wound coils, but they are equivalent. The place is not convenient. Therefore, the traditional method can not be used in a large number of automated production, is an important issue that the industry urgently needs to solve.

To this end, the purpose of this creation is to design a transformer winding frame that can be automated for winding production, so that the lead wires of the coil will not be interlaced with other winding coils, so that all the coils can be overlapped and wound one at a time using an automated mechanism device. Complete, without the need to manually add isolation sleeves, so in addition to reducing working hours, the cost of the isolation sleeve can be saved.

In order to achieve the above purpose, the present invention provides a transformer bobbin improved structure, the bobbin includes a bobbin, stands between a top plate and a bottom plate to form an I-shape, and the inner side of the bobbin is hollowed out at the center. The outer surface may be overlapped and wound with at least two sets of coils, and the bottom plate is provided with a plurality of electric pins on the front and rear end surfaces of the bobbin; the surface of the bottom plate of the present invention has a height difference and is close to the bobbin joint. The left and right sides of the bottom plate are higher than the front and rear surfaces of the bottom plate, so that a gap is formed between the winding coil and the front and rear surfaces of the bottom plate, and the lead wire of the coil can be led out through the gap without touching the other winding coils. The insulating tape wrapped around the coil can extend into the gap to cover the exposed portion of the coil close to the bottom plate.

10‧‧‧ Winding frame

12‧‧‧floor

14‧‧‧ coil

14”‧‧‧ lead line

15‧‧‧Electric pins

20‧‧‧ Winding frame

21‧‧‧winding column

22‧‧‧floor

23‧‧‧ top board

24‧‧‧Electric feet

25‧‧‧ left and right side surfaces

26‧‧‧ front and rear side surfaces

27‧‧‧ gap

28‧‧‧ hanging wire studs

29‧‧‧V-shaped line gap

30‧‧‧ coil

30’‧‧‧ lead line

31‧‧‧Baffle

32‧‧‧Line gap

33‧‧‧Line trench

34‧‧‧Watchway

35‧‧‧Drop bumps

40‧‧‧ iron core

Figure 1 is a perspective view of a transformer winding bobbin with a wound coil.

Figure 2 is a side cross-sectional view of Figure 1.

FIG. 3 is a perspective view of the first perspective view of the winding frame of the present invention.

4 is a perspective view of a second perspective view of the winding frame of the present invention.

FIG. 5 is a three-dimensional perspective view of the winding frame of the present invention.

FIG. 6 is a perspective view of a fourth perspective view of the present winding frame.

FIG. 7 is a schematic perspective view of the winding frame of the present invention after winding the coil.

Figure 8 is a side cross-sectional view of Figure 7 taken at the center of the bobbin.

Fig. 9 is a perspective view showing the front of the winding frame and the core.

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 creation design improves the winding structure of a transformer, mainly solves the problem that when multiple sets of coils are wound on the same winding column, the lead wires of the coil will not be interlaced with the winding coils of other groups, so the winding of the creation transformer Referring to FIG. 3 to FIG. 6 , FIG. 3 to FIG. 6 are schematic perspective views of various viewing angles (first to fourth viewing angles) of the winding frame, and FIG. 7 is after the winding of the winding frame of the present invention. FIG. 8 is a side cross-sectional view of FIG. 7 taken along the center of the bobbin.

As shown in FIG. 3 to FIG. 8 , the transformer bobbin 20 of the present embodiment includes a bobbin 21 , a bottom plate 22 , a top plate 23 , and a plurality of electric pins 24 . The bobbin 21 stands on the bobbin 21 . An I-shape is formed between the bottom plate 22 and the top plate 23. The outer surface of the bobbin 21 can be overlapped and wound with at least two sets of coils 30 (as shown in FIGS. 7 and 8), and the inner side of the bobbin 21 is centered. Hollow, Between the bottom plate 22 and the top plate 23, two cores can be placed in the center hollow, as illustrated in FIG.

In the embodiment of FIGS. 3-6, the electrical pins 24 are disposed on the outer side surface of the bottom plate 22 of the bobbin 20, in other words, on the front and rear end surfaces of the bottom plate 22 facing away from the bobbin 21. The electrical pins 24 can be divided into a plurality of first end electrical pins and a plurality of second end electrical pins, and are disposed on the front and rear opposite ends of the bottom plate 22. As shown in Figs. 7 and 8, the lead wires 30' of the coils 30 are wound around the electrical pins 24, respectively.

As shown in FIG. 3 to FIG. 4, the present invention is characterized in that a height difference is designed at the connection between the bottom plate 22 of the bobbin 20 and the bobbin 21, and the height difference design is: the bottom plate 22 near the bobbin 21. The left and right side surfaces 25 are relatively raised, and the front and rear side surfaces 26 of the bottom plate 22 near the bobbin 21 are lowerly depressed. In other words, the left and right side surfaces 25 of the bottom plate 22 are higher than the front and rear side surfaces 26, as shown in FIG. Thus, a gap 27 is formed between the coil 30 wound on the bobbin 21 and the front and rear side surfaces 26 of the bottom plate 22, and the lead wire 30' of the coil 30 can be drawn out by the gap 27 and then wound to the first The terminal electrical pin 24 and/or the second terminal electrical pin 24 are not interleaved with other winding coils 30. In the embodiment of FIGS. 3 and 4, the position of the high and low drop is the position where the front and rear sides of the bottom plate 22 are cut at the joint of the bobbin 21. In the embodiment of the present invention, the height difference between the left and right side surfaces 25 of the bottom plate 22 and the front and rear side surfaces 26 has at least one coil having a height of 0.4 mm.

In the embodiment of the present invention, two hanging wire studs 28 are further disposed on the outer surface of the top plate 23. As in the embodiment of FIGS. 3 and 4, the hanging wire studs 28 are two. The square wire column shape, while in other embodiments the wire stringing column 28 can be any other shape of the wrapable wire, such as a cylindrical shape, an elliptical column shape or an L shape. . . And so on, and the top plate 23 between the above-mentioned hanging wire posts 28 is provided There is a V-shaped wire gap 29. The wire stud 28 is used to connect one of the lead wires of a shield coil (not shown) to the V-shaped wire notch 29, and the other end of the shield coil is electrically connected to the wire. An electric pin of a grounding terminal (not shown) is used to cover the outer side of the primary side and the secondary side coil, so that the high frequency electromagnetic wave interference generated by the coil 30 can be blocked by the shielding coil. The wire stud 28 is designed to reduce the number of the lead wires connected to the electric pins, thereby reducing the number of electric pins, reducing the volume of the bobbin, and between the studs 28 and the electric pins. Far apart, it reduces the safety issues between the shield coil and other coils.

In addition, in the embodiment of FIG. 3 to FIG. 5, the bottom plate 22 and the top plate 23 are respectively provided with two baffles 31 opposite to the outer surface of the bobbin 21, which are V-shaped with an opening outward, and The iron cores (not shown) can be placed and fixed between the baffles 31. The electrical pins 24 are disposed on the outer side of the baffle 31. In the embodiment of FIG. 3 and FIG. 5, a wire notch 32 is disposed on the front end of the bottom plate 22 between each of the two electrical pins 24, so that the lead wire 30' of the coil 30 is re-wound through the wire notch 32. Connected to the electrical pin 24 (as shown in Figures 7 and 8). Referring to FIG. 3 and FIG. 5 again, the bottom plate 22 is adjacent to the bottom left and right sides of the bobbin 21, and a wire groove 33 is extended toward the front end of the bottom plate for letting the coil 30 drawn around the inner layer lead out. 30' is wound around the electric pin 24 via the wire groove 33 to the wire notch 32 and then to the lower end.

In the embodiment of FIG. 4 and FIG. 6, a routing channel 34 is formed at the center of the rear end of the bottom plate 22 for winding the lead wires 30' of the coils 30 through the routing channel 33. The electrical pins 24 are disposed on the bottom surfaces of the two sides of the routing channel 33, and a branching protrusion 34 is disposed for allowing the lead wires 30' of the coils 30 to pass through the branching bumps 35. The guide is wound onto the electrical pins 24.

Please refer to Figure 9, the three-dimensional diagram of the combination of the original winding frame and the core The transformer of the present invention further comprises a core 4 and an insulating tape (not shown), wherein the two cores 40 are E-shaped, and the upper ends of the top plate 23 of the bobbin 20 and the bottom plate can be respectively formed in an E-shaped opening manner. The lower end of 22 is coupled to the outer side of the left and right sides of the bobbin 20 and the inner side of the center of the bobbin 21 at the lower end. The insulating tape is wrapped on the outside of the coil 30 wound on the bobbin for protecting the coil. However, in the present invention, there is a gap between the front end surface and the rear end surface 26 of the bobbin 22 and the bobbin 22 of the bobbin 21. The gap 27, so that the insulating tape can protrude into the gap 27 to cover the exposed portion of the coil near the bottom plate 22, so as to surely isolate the electrical contact between the coil lead wire 30' and the wound coil 30, and strengthen the insulation isolation effect between the two.

The job is to improve the structure of the winding frame of the transformer, so that the lead wire of the coil can not be touched by other winding coils, and can be automated mass production, and can fully meet the safety requirements, so the disclosure of this creation The above technical means can provide a design that is quite different from the conventional ones, can improve the overall use value, and is not found in the publication or public use before the application. Cheng has already met the requirements of the new patent, and proposed a new type of patent application according to law.

20‧‧‧ Winding frame

21‧‧‧winding column

22‧‧‧floor

23‧‧‧ top board

24‧‧‧Electric feet

25‧‧‧ left and right side surfaces

26‧‧‧ front and rear side surfaces

28‧‧‧ hanging wire studs

29‧‧‧V-shaped line gap

31‧‧‧Baffle

32‧‧‧Line gap

33‧‧‧Line trench

Claims (12)

A transformer bobbin improved structure, wherein the transformer comprises: a bobbin, comprising a bobbin, standing between a bottom plate and a top plate to form an I-shape; wherein the inner side of the bobbin is hollowed out At least two sets of coils are overlapped and wrapped around the outer surface of the bobbin; and a plurality of electric pins are disposed on the front and back end surfaces of the bottom plate facing away from the bobbin, and are divided into a plurality of first end electric pins and a plurality of second end electrical pins; wherein: the bottom plate and the bobbin are connected to the bottom plate having a height difference, and the left and right sides of the bottom plate near the connection of the bobbin are higher than the bottom plate The two sides of the surface form a gap between the coils and the front and rear surfaces of the bottom plate, and the lead wires of the coils can be led out through the gap without being in contact with the other winding coils. The improved structure of the bobbin of the transformer of claim 1, wherein the lead wires of the coils are taken out from the gaps on the front and rear sides of the bottom plate, and respectively wound around the first end electric pins and/or the second ends Electric pin. The winding structure of the transformer of claim 1, wherein the transformer further comprises an insulating tape covering the outer side of the coils, wherein the insulating tape further protrudes into the gap, covering the surface adjacent to the bottom plate Some coils. The winding structure of the transformer of claim 1, wherein the transformer further comprises two cores in an E shape, and the two cores are respectively opposed to each other by the top end of the winding frame and the lower end of the bottom plate. The upper and lower sides are coupled to the outer side of the left and right sides of the bobbin and the inner side of the central hollow. The winding frame improvement structure of the transformer of claim 4, wherein the top plate and the outer side surface of the bottom plate are respectively provided with two baffles, and the iron core can be accommodated between the two baffles. The improved bobbin structure of the transformer of claim 1, wherein the surface of the bottom plate has a height difference of at least 0.4 mm. The winding frame improvement structure of the transformer of claim 1, wherein the position of the high and low drop of the surface of the bottom plate is at a joint of the front and rear sides of the bottom plate. The improved structure of the bobbin of the transformer of claim 1, wherein the outer surface of the top plate is provided with two hanging wire protrusions, and a V-shaped wire gap is provided at the top plate between the two hanging wire protrusions for A lead wire of a shield coil is wound around the wire stud via the V-shaped notch, and the other lead wire of the shield coil is electrically connected to a grounded electrical pin. The improved structure of the bobbin of the transformer of claim 1, wherein a front end of the bottom plate is provided with a wire gap between each of the electric pins, so that the lead wires of the coils are wound through the wire gaps to The electric pins are on. The improved structure of the bobbin of the transformer of claim 9, wherein the bottom plate is adjacent to the bottom left and right sides of the bobbin, and a trough groove is extended toward the front end of the bottom plate for winding the inner coils The lead wire is wound on the electric pin via the wire trench to the wire gap. The improved structure of the bobbin of the transformer of claim 1, wherein a routing channel is formed at a center of the rear end of the bottom plate, so that the lead wires of the coils are wound onto the electric pins through the routing channel. . The improved structure of the bobbin of the transformer of claim 11, wherein a surface of each of the two sides of the routing channel is provided with a branching protrusion for allowing the lead wires of the coils to pass through the partial lines. The guiding of the block is wound onto the electrical pins.