CN210110486U - Network transformer - Google Patents

Abstract

The utility model relates to the technical field of electronics, and provides a network transformer, which comprises a transformer unit, wherein the transformer unit comprises a magnetic ring and an enameled wire wound on the magnetic ring, the magnetic ring comprises a ring, and the ring is provided with a hole; the enameled wire includes first line to sixth line, and first line to sixth line include line head, line tail and connect the line segment of line head and line tail respectively, characterized by: the first line segment, the second line segment and the sixth line segment are twisted into a winding, the third line segment, the fourth line segment and the fifth line segment are twisted into another winding, the winding is wound on the ring through the ring hole to form a ring, and a winding space is reserved between the ring rings; the other winding is wound on the ring in the winding interval to form another ring winding, and the first ring and the last ring of the ring winding or the starting point and the end point of the ring winding form an included angle larger than 300 respectively, so that the technical problems of simplifying the structure and reducing the occupied space are solved by the structure, and the effects of improving the product yield and the performance are achieved.

Description

Network transformer

Technical Field

The utility model relates to the field of electronic technology, indicate especially to provide a network transformer.

Background

The network is widely applied to the work and life of people in the contemporary society, and is an indispensable important tool for people. High performance electrical connectors for network communication ports typically have a transformer and a common mode suppressor to achieve filtering. In the prior art, a network transformer suitable for a network port generally includes a plurality of magnetic cores and an enameled wire wound around the magnetic cores. For high frequency applications, the transformer typically has a center tap to better reject common mode noise. However, the network transformer of the "ten-gigabit-class" network port applied in the market generally adopts the inductor for filtering noise disposed on the POE channel, and because the inductor has a large volume, it will occupy a limited space, and is not favorable for the development of the electrical connector towards the market demands of short, small, light and thin. Therefore, there is a need for an improved transformer in the prior art to overcome the drawbacks of the prior art.

Disclosure of Invention

In order to solve the above technical problem, an object of the present invention is to provide a network transformer and a method for manufacturing the same.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the network transformer comprises a transformer unit, wherein the transformer unit comprises a magnetic ring and an enameled wire wound on the magnetic ring, the magnetic ring comprises a ring, and the ring is provided with a hole; the enameled wire includes first line to sixth line, and first line to sixth line include line head, line tail and connect the line segment of respective line head and line tail respectively, wherein: the first line segment, the second line segment and the sixth line segment are twisted into a winding, the third line segment, the fourth line segment and the fifth line segment are twisted into another winding, the winding is wound on the ring through the ring hole to form a ring, and a winding space is reserved between the ring rings; the other winding is wound around the rings in the winding pitch and forms another loop winding, the loop winding and the other loop winding each forming an angle of more than 30 DEG between a start point and an end point of the winding on the rings, respectively, and a last winding or a start point and an end point of the winding on the rings.

Preferably: the ring is formed into an inner ring and an outer ring by the ring holes, the inner ring and the outer ring form a solid area, and the solid area comprises two opposite side surfaces.

Preferably: one end of the winding is twisted with one end of the other winding to form a stranded wire, and the stranded wire is tightly attached to one side surface of the ring; the other end of the winding is twisted with the other end of the other winding to form another stranded wire, and the other stranded wire part is tightly attached to the other side surface of the ring relative to the stranded wire part; the strand is twisted with another strand in the middle of the outer ring and forms a collector.

Preferably: the first wire tail and the second wire tail are stranded to form a first stranded wire; the third wire end and the fourth wire end are twisted to form a second stranded wire; the first wire head, the second wire head, the third wire tail and the fourth wire tail are stranded to form a third stranded wire.

Preferably: further include the seventh line, the seventh line includes line head, line tail and the line segment of connecting line head and line tail, wherein: the seventh line segment is positioned at the gathering part, and the seventh line head, the fifth line head and the sixth line tail are twisted to form a tap.

Preferably: the magnetic ring also comprises another ring, and the other ring is provided with another ring hole; the fifth line tail, the sixth line head and the seventh line tail form a flat cable in a side-by-side mode, the other ring is connected through the flat cable, and the flat cable is uniformly wound on the other ring through the other ring hole to form a flat cable winding ring.

Preferably: the length of the straight line from the collection part of the winding wire to the starting point of the other ring is 1.5mm to 2.5mm, and the number of the rings wound on the other ring is 6; the number of circles wound on the ring by the ring winding and the other ring winding is 6.

Preferably: the other ring is wound with a single coil at the last circle close to the winding coil of the flat cable, and the single coil is 6 circles, namely, the seventh wire tail is wound on the other ring.

Preferably: the other ring has leads which are respectively an extension of the fifth end, an extension of the sixth end and an extension of the single coil, each extension having a remaining length of 30mm to 40 mm.

Preferably: the length of the tap is 3mm to 4mm, a tin plating part is formed by tin plating, and white glue is wrapped on the tin plating part.

Compared with the prior art, the utility model, its profitable effect is:

(1) the winding form is improved, so that the magnetic core structure and the winding structure of the transformer are simpler, the manufacture is more convenient, the cost is effectively reduced, and the product yield is improved;

(2) by improving the structure, the size of the product is reduced, and the problem that the product occupies limited space is solved;

(3) the utility model provides a network transformer's mode of connection still helps making the performance of transformer more stable, controls working parameter more accurately, is suitable for extensive batch production.

Drawings

Fig. 1 is a schematic circuit diagram of the present embodiment.

Fig. 2 is a schematic circuit diagram of one transformer unit of fig. 1.

Fig. 3 is a schematic diagram of a transformer unit in fig. 1.

Fig. 4 is a schematic view of the winding and extension structure of the transformer unit in fig. 3.

FIG. 5 is a schematic diagram showing the angle formed by winding the transformer unit in FIG. 3.

Fig. 6 is a perspective view of the stranded wire with emphasis on the side of the transformer unit in fig. 3.

Fig. 7 is a schematic perspective view focusing on the twisted wires on the side surface and the gathering portion at the outer ring of the transformer unit in fig. 3.

Fig. 8 is a schematic diagram focusing on the structure of the first, second and third strands of the transformer unit in fig. 3.

Fig. 9 is a schematic diagram showing a structure of the transformer unit in fig. 8 with a tap line and a tap added.

Detailed Description

While the present invention may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, the directions (such as up, down, left, right, front, and rear) are used to explain the structure and movement of the various components of the present invention not absolutely, but relatively. These illustrations are appropriate when these components are in the positions shown in the figures. If the description of the positions of these components changes, the indication of these directions changes accordingly.

The preferred embodiments of the present invention will be further described in detail with reference to the accompanying drawings.

Referring to fig. 1, a schematic circuit diagram of a network transformer of the present embodiment includes four transformer units 100, where: the structure and function of each transformer unit 100 are the same, and therefore, only the technical features of one of the transformer units 100 will be described in detail below.

Referring to fig. 1 in combination with fig. 2 to 7, fig. 2 is a schematic circuit diagram of a transformer unit 100, fig. 3 is a schematic structural diagram of the transformer unit 100, which includes a magnetic ring 10 and an enameled wire 20 wound around the magnetic ring, the magnetic ring 10 (commonly referred to as a "magnetic core" in the industry) includes a ring 11 and another ring 12 smaller than the diameter of the ring 11, the ring 11 and the another ring 12 are made of a common magnetic conductive material and respectively have a ring hole 111 and another ring hole 121, the ring hole 111 enables the ring 11 to form an inner ring (e.g., "inner wall") N and an outer ring (e.g., "outer periphery") W concentric with the inner ring N; the other ring hole 121 forms the other ring 12 into the other inner ring n and the other outer ring w forming a concentric circle with the other inner ring n; the enamel wire 20 includes a first wire 21, a second wire 22, a third wire 23, a fourth wire 24, a fifth wire 25, and a sixth wire 26, wherein: the first wire 21 includes a first wire head 211 and a first wire tail 212 and a first wire segment (not labeled) connecting the first wire head 211 and the first wire tail 212, the second wire 22 includes a second wire head 221 and a second wire tail 222 and a second wire segment (not labeled) connecting the second wire head 221 and the second wire tail 222, the third wire 23 includes a third wire head 231 and a third wire tail 232 and a third wire segment (not labeled) connecting the third wire head 231 and the third wire tail 232, the fourth wire 24 includes a fourth wire head 241 and a fourth wire tail 242 and a fourth wire segment (not labeled) connecting the fourth wire head 241 and the fourth wire tail 242, the fifth wire 25 includes a fifth wire head 251 and a fifth wire tail 252 and a fifth wire segment (not labeled) connecting the fifth wire head 251 and the fifth wire tail 252, and the sixth wire 26 includes a sixth wire head 261 and a sixth wire tail 262 and a sixth wire segment (not labeled) connecting the sixth wire head 261 and the sixth wire tail 262. In this example, the first line segment, the second line segment and the sixth line segment are twisted into a winding a, the third line segment, the fourth line segment and the fifth line segment are twisted into another winding B, the winding a is wound on the ring 11 in a uniformly distributed manner through the ring hole 111, the number of turns wound on the ring 11 is 6, and a winding space (not labeled) is formed between adjacent turns of the wound turns; the other winding B is also wound on the ring 11 in a winding pitch parallel to the winding locus of the winding a, and the number of turns of the winding coincides with the number of turns of the winding formed by the winding a. The distance between the coil formed by winding A and the adjacent coil formed by winding B is 1.5mm-2.5 mm. In the ring 11, the turns of the winding formed by the winding a do not intersect with and overlap with the turns of the winding formed by the other winding B. The axis of the first circle (or starting point on the loop) t (t) of the winding a and the other winding B wound around the loop 11 forms an angle (as shown in fig. 4) greater than 30 ° with the axis of the last circle (or ending point on the loop) m (m), respectively, and the lengths of the two ends of the winding a extending from the inner ring N to the outer ring W are about 2mm (abbreviated as "head and tail extension ends a, a '") on two opposite sides 112 of the loop 11 (see fig. 5 and 6), and the lengths of the two ends of the other winding B extending from the inner ring N to the outer ring W are about 2mm (abbreviated as "head and tail extension ends B, B'"), respectively, wherein: the head extending end a and the other head extending end b on the same side surface 112 are twisted to form a twisted wire ab ', the tail extending end a ' and the other tail extending end b ' on the opposite side surface are twisted to form another twisted wire ab ', the twisted wire ab and the other twisted wire ab ' are respectively (6 twists) tightly attached to each side surface 112 and extend to the outer ring W to form a gathering part H through twisting, and the twisting included angle is as small as possible during twisting. In this example, the "loose wires" of a twisted wire ab extending from the collecting portion H are the first wire tail 212, the second wire tail 222, the third wire head 231, the fourth wire head 241, the fifth wire head 251 and the sixth wire tail 262, respectively, and the "loose wires" of another twisted wire ab extending from the collecting portion H are the fifth wire tail 252, the sixth wire head 261, the first wire head 211, the second wire head 221, the third wire tail 232 and the fourth wire tail 242, respectively, wherein: the branching and combining patterns of the "scattered lines" are divided into (see fig. 7): the first tail 212 and the second tail 222 correspond to each other and are twisted to form a first twisted wire Y; the third wire head 231 corresponds to the fourth wire head 241 and is twisted to form a second twisted wire R; the first wire head 211, the second wire head 221, the third wire tail 232 and the fourth wire tail 242 are twisted to form a third twisted wire S; the fifth thread head 251 corresponds to the sixth thread tail 262 and the fifth thread tail 252 corresponds to the sixth thread head 261.

With continuing reference to fig. 1-7 and with further reference to fig. 8, a strip is added (or "fetched") to the collection portion H

The enameled wire is used as a seventh wire 27, the seventh wire head 271, the fifth wire head 251 and the sixth wire tail 262 are stranded (about 15 strands, the length is 2cm) to form a tap C, the tap C is tinned by 3mm to 4mm in length to form a tinned part (not labeled), the tinned part is at least 2 strands, the length of the non-tinned part is more than 0.5mm (the redundant part is cut off), and then white glue (not labeled) is coated on the tinned part.

Referring to fig. 2, fig. 3 and fig. 9 again, in fig. 3, the fifth tail 252, the sixth head 261 and the seventh tail 272 are arranged in parallel to form a flat cable P, and the flat cable P is wound around another ring 12 through another ring hole 121, so that the ring 11 and the other ring 12 are connected through the flat cable P, wherein: the length of a straight line from the collection part H of the ring 11 to the starting point of the other ring 12 is 1.5mm to 2.5mm, the ring number of the winding of the other ring 12 is preferably 6 (when winding, the rings are not overlapped with each other), a single coil e is wound after the last ring of the other ring 12, a lead extends from the single coil e, the single coil e (preferably 6) is formed by winding a seventh wire tail 272 on the other ring 12, and the rings of the single coil e are closely close to each other but are not overlapped with each other; the lead wires are respectively a fifth wire tail 252 extension wire, a sixth wire head 261 extension wire and a seventh wire tail 272 extension wire, and the reserved length of each extension wire is 30mm to 40 mm.

Referring to fig. 2 to 9, the solid region formed by the inner ring N and the outer ring W is a carrier of a winding W1 wound around a winding a and another winding W2 wound around a winding a; another solid area formed by the other inner ring n to the other outer ring W is a carrier of the coil W3 and the single coil e wound with the flat cable P.

It should be noted that: the wire sections and the wire heads, wire tails and the strands and/or windings formed by the wire heads and the wire tails, which connect the wire sections, are essentially different sections of the same wire, differing only in specific functions, so that no boundary or separation structure exists between the wire sections and the strands and/or windings.

Referring again to fig. 1 and also to fig. 2, after forming the first input terminal (second twisted wire R) MD1+ P7, the second input terminal (first twisted wire Y) MD1-P8, the first output terminal (sixth wire end) 261J1MX1+, the second output terminal (fifth wire end 252) J2 MX-and the tap (third twisted wire S) CT1, (tap C) CT2 as shown above, the transformer unit 100 is completed. The transformer unit 100 may then be mounted to a circuit board (not shown). When the circuit board is mounted, the ring 11 and the other ring 12 are fixed on the surface of the circuit board, and the first input end, the second input end, the first output end, the second output end, and the taps CT1 and CT2 are electrically connected to a plurality of connection ports (not shown) preset on the circuit board respectively. The connection ports may be conventional electrical connection structures such as pads, vias, plug terminals, etc.; the fixing manner of the ring 11 and the other ring 12 and the connection manner of the first input terminal, the second input terminal, the first output terminal, the second output terminal, the tap CT1 and the tap CT2 can all adopt the common techniques in the art, and need not be described herein. In this embodiment, four identical transformer units 100 may be fabricated separately and mounted on the same circuit board, as described above.

In the present embodiment, the first, second, third, fourth, fifth and sixth wires 21, 22, 23, 24, 25 and 26, and the seventh wire 27 are each made of enameled wires. In order to clearly distinguish the lines when the line segment, the winding line, and the head (tail) of the outgoing line are formed, the lines may be formed in different colors. For example: preferably, the first and second lines 21, 22 are of a first color, the third and fourth lines 23, 24 are of a second color, the fifth line 25 is of a third color, and the sixth line 26 is of a fourth color, and the seventh line 27 is of the second color, in increments, wherein: the first color, the second color, the third color, and the fourth color are different from each other. Preferably: the first color is blue, the second color is red, the third color is green, and the fourth color is gold. Of course, the first to fourth colors are not limited to these colors as long as they can be easily distinguished from each other. Likewise, the first to seventh lines 21 to 27 may be provided in seven different colors, respectively.

Claims (10)

1. A network transformer comprises a transformer unit, wherein the transformer unit comprises a magnetic ring and an enameled wire wound on the magnetic ring, the magnetic ring comprises a ring, and the ring is provided with a hole; the enameled wire includes first line to sixth line, and first line to sixth line include line head, line tail and connect the line segment of line head and line tail respectively, characterized by: the first line segment, the second line segment and the sixth line segment are twisted into a winding, the third line segment, the fourth line segment and the fifth line segment are twisted into another winding, the winding is wound on the ring through the ring hole to form a ring, and a winding space is reserved between the ring rings; another winding is wound around the rings at the winding pitch and forms another loop winding, and the loop winding and the another loop winding each form more than 30 points at the start and end points of the first and last windings wound around the rings or the winding around the rings, respectively⁰And (4) an included angle.

2. The network transformer of claim 1, wherein: the ring is formed into an inner ring and an outer ring by the ring holes, the inner ring and the outer ring form a solid area, and the solid area comprises two opposite side surfaces.

3. The network transformer of claim 2, wherein: one end of the winding is twisted with one end of the other winding to form a stranded wire, and the stranded wire is tightly attached to one side surface of the ring; the other end of the winding is twisted with the other end of the other winding to form another stranded wire, and the other stranded wire is tightly attached to the other side surface of the ring relative to the stranded wire; the strand is twisted with another strand in the middle of the outer ring and forms a collector.

4. The network transformer of claim 3, wherein: the first wire tail and the second wire tail are stranded to form a first stranded wire; the third wire end and the fourth wire end are twisted to form a second stranded wire; the first wire head, the second wire head, the third wire tail and the fourth wire tail are stranded to form a third stranded wire.

5. The network transformer of claim 4, wherein: further include the seventh line, the seventh line includes line head, line tail and the line segment of connecting line head and line tail, wherein: the seventh line segment is positioned at the gathering part, and the seventh line head, the fifth line head and the sixth line tail are twisted to form a tap.

6. The network transformer of claim 5, wherein: the magnetic ring also comprises another ring, and the other ring is provided with another ring hole; the fifth line tail, the sixth line head and the seventh line tail form a flat cable in a side-by-side mode, the other ring is connected through the flat cable, and the flat cable is uniformly wound on the other ring through the other ring hole to form a flat cable winding ring.

7. The network transformer of claim 6, wherein: the length of the straight line from the collection part of the winding wire to the starting point of the other ring is 1.5mm to 2.5mm, and the number of the rings wound on the other ring is 6; the number of circles wound on the ring by the ring winding and the other ring winding is 6.

8. The network transformer of claim 7, wherein: the other ring is wound with a single coil at the last circle close to the winding coil of the flat cable, and the single coil is 6 circles, namely, the seventh wire tail is wound on the other ring.

9. The network transformer of claim 8, wherein: the other ring has leads which are respectively an extension of the fifth end, an extension of the sixth end and an extension of the single coil, each extension having a remaining length of 30mm to 40 mm.

10. The network transformer of claim 9, wherein: the length of the tap is 3mm to 4mm, a tin plating part is formed by tin plating, and white glue is wrapped on the tin plating part.

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