CN216597234U

CN216597234U - Transformer

Info

Publication number: CN216597234U
Application number: CN202122991424.7U
Authority: CN
Inventors: 孔晓; 李锦琦; 万佳美; 王波; 陈保华; 杨明雄
Original assignee: Dongguan Leader Precision Industry Co Ltd
Current assignee: Dongguan Leader Precision Industry Co Ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-05-24
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a transformer, which solves the problems that the surface of a magnetic core electrode position is long in electroplating period and cannot be electroplated laterally, reduces the size of the whole structure and widens the application scene of products. The utility model comprises a magnetic core and a coil winding arranged on the magnetic core; the magnetic core comprises a winding post and two side plates on two sides, the winding post is arranged between the two side plates on two sides, a coil winding is wound on the winding post, and a plurality of positioning seats which are mutually spaced are respectively arranged at the top ends of the two side plates; the magnetic core comprises a magnetic conductive main body; the positioning seat is provided with a spacing sheet; a bonding pad is arranged on the spacer, and an electrode lead is arranged on the bonding pad; and a plurality of electrode leads of the coil winding are respectively arranged on the corresponding bonding pads of the spacing pieces. The utility model can be applied to transformers, surface mounted transformers, common mode inductors, power transformers and the like, and is applied to the network communication market, RJ45 connector isolation, communication transmission and the like.

Description

Transformer

Technical Field

The utility model belongs to the technical field of transformers, and particularly relates to a transformer capable of solving the problem of short circuit prevention of a conductive magnetic material.

Background

The material used in the existing transformer is non-conductive nickel-zinc material, the inductance value is low, the number of winding turns is large, the impedance matching is not easy to adjust, and the conductive manganese-zinc material main body framework can not be used. The body frame is not conductive and cannot plate the bond pads.

The existing transformer is of an integrated structure, and a bonding pad is connected with the main body in a copper sheet mode; or the electroplating bonding pad is connected with the main body framework into a whole through the process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art, provides a transformer, solves the problems that the surface electroplating period of a magnetic core electrode site is long and side electroplating cannot be carried out, reduces the overall structure size and widens the application scene of products.

In order to solve the problems of the prior art, the utility model adopts the following technical scheme:

a transformer, comprising: a magnetic core (I-shaped) and a coil winding arranged on the magnetic core; the magnetic core comprises a winding post and two side plates on two sides, the winding post is arranged between the two side plates on two sides, a coil winding is wound on the winding post, and a plurality of positioning seats (convex types) which are mutually spaced are respectively arranged at the top ends of the two side plates; the magnetic core comprises a magnetic conductive main body; the positioning seat is provided with a spacing sheet;

a bonding pad is arranged on the spacer, and an electrode lead is arranged on the bonding pad; and a plurality of electrode leads of the coil winding are respectively arranged on the corresponding bonding pads of the spacing sheet.

Further, the magnetic core comprises a manganese zinc body or a nickel zinc body.

Further, the magnetic core comprises a manganese zinc ferrite body or a nickel zinc ferrite body.

Further, the transformer still includes the magnetizer, and the magnetic core setting is on the magnetizer, and magnetizer and magnetic core include manganese zinc ferrite main part.

Further, the spacer comprises a side wall and an upper seat (an upper cover), the upper seat is provided with a groove matched with the positioning seat, and the side wall is arranged close to the side edge of the positioning seat and the outer side of the side plate; the upper seat is provided with a bonding pad, and the bonding pad and the groove are positioned on two opposite surfaces of the upper seat; the spacing block is a ceramic block.

Furthermore, the side wall and the upper seat are arranged in an L shape, and the upper seat is buckled on the positioning seat.

Furthermore, the spacing piece also comprises a plurality of glue points which are arranged in the groove and on one surface of the side wall facing the upper seat, and the upper seat is arranged on the top of the positioning seat in a bonding way through the glue points in the groove; the side wall is bonded on the side edge of the positioning seat and the outer side of the side plate through glue points.

Furthermore, the positioning seats comprise a first positioning seat, a second positioning seat, a third positioning seat and a fourth positioning seat, the top ends of the two side plates are respectively provided with the first positioning seat, the second positioning seat, the third positioning seat and the fourth positioning seat which are mutually spaced, a first isolation groove is arranged between the first positioning seat and the second positioning seat, a middle isolation groove is arranged between the second positioning seat and the third positioning seat, and a second isolation groove is arranged between the third positioning seat and the fourth positioning seat; the positioning seats on the two side plates are symmetrically (correspondingly) arranged in the same way.

Furthermore, the isolation pieces comprise a first isolation piece, a second isolation piece, a third isolation piece, a fourth isolation piece, a fifth isolation piece, a sixth isolation piece, a seventh isolation piece and an eighth isolation piece, and the first isolation piece, the second isolation piece, the third isolation piece and the fourth isolation piece are respectively buckled and arranged corresponding to the first positioning seat, the second positioning seat, the third positioning seat and the fourth positioning seat of one side plate; the fifth spacing block, the sixth spacing block, the seventh spacing block and the eighth spacing block are respectively buckled with the fourth positioning seat, the third positioning seat, the second positioning seat and the first positioning seat of the other side plate.

Furthermore, the double lines of the input electrodes on the first isolating sheet and the third isolating sheet are wound in a parallel mode in the positive direction, and electrode leads of the double lines of the input electrodes in the positive direction are welded on the bonding pads of the first isolating sheet and the third isolating sheet respectively;

the input electrodes on the second and fourth isolating sheets are wound in opposite directions, and electrode leads of the input electrodes wound in opposite directions are respectively welded on bonding pads of the second and fourth isolating sheets;

the two wire collecting output electrodes on the seventh isolating sheet and the fifth isolating sheet are wound in a parallel mode in the positive direction, and electrode leads of the wire collecting output electrodes in the double wire positive direction are welded on the welding discs of the seventh isolating sheet and the fifth isolating sheet respectively;

the two winding output electrodes on the eighth and sixth isolating sheets are wound in opposite directions, and electrode leads of the winding output electrodes wound in opposite directions are welded on the bonding pads of the eighth and sixth isolating sheets respectively.

The utility model can be applied to transformers, surface mounted transformers, common mode inductors, power transformers and the like, and is applied to the network communication market, RJ45 connector isolation, communication transmission and the like.

The main framework of the utility model uses manganese-zinc body or other magnetic conductive bodies (such as manganese-zinc ferrite, or nickel-zinc ferrite, metal magnetic conductive disc, etc.); the spacing block connected with the main body is a ceramic plate or other insulating high-temperature-resistant materials; the bonding pad on the ceramic sheet can be electroplated or made of conductive materials such as copper sheets; the ceramic chip and the main body are connected in a glue-dispensing bonding or buckling fixing mode; the ceramic chip separated structure is matched with the positioning seat on the main body.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention;

FIG. 4 is a schematic view of a spacer portion according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the present invention.

The reference numerals are illustrated below:

the magnetic conductor 11, the magnetic core 12, the bonding pad 14, the electrode lead 15, the coil winding 16, the middle isolation slot 17, the winding post 18, the side plate 19, the isolation sheet 20, the first isolation sheet 21, the second isolation sheet 22, the third isolation sheet 23, the fourth isolation sheet 24, the fifth isolation sheet 25, the sixth isolation sheet 26, the seventh isolation sheet 27, the eighth isolation sheet 28, the positioning seat 30, the first positioning seat 31, the first isolation slot 32, the third positioning seat 33, the second isolation slot 34, the fourth positioning seat 35, the second positioning seat 39, the groove 41, the side wall 42, the upper seat 43 and the glue point 44.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in the drawings, embodiments of the present invention provide a transformer, such as but not limited to a network transformer. In some embodiments, the transformer includes a core 12, the coil winding 16 being wound around the core 12, and the core 12 including a magnetically conductive body, such as the body or the entirety of the core 12 being made of a magnetically conductive material. In some embodiments, the magnetic core 12 includes a manganese-zinc body, such as the body of the magnetic core 12 or the entirety of the manganese-zinc material. In some embodiments, the magnetic core 12 comprises a manganese-zinc-ferrite body, such as the body of the magnetic core 12 or the entirety of a manganese-zinc-ferrite. In other embodiments, the core 12 may also include a nickel-zinc body, such as the body of the core 12 or the entire body being made of a nickel-zinc material, such as nickel-zinc ferrite. In some embodiments, the transformer comprises a magnetizer 11 and a magnetic core 12, the magnetic core 12 having an i-shape; the magnetic core 12 is arranged on the magnetizer 11, and the magnetizer 11 and the magnetic core 12 are made of magnetic conductive materials. In some embodiments, the magnetizer 11 and the magnetic core 12 may be made of manganese-zinc material or nickel-zinc material, and may also be made of other magnetic conductive materials. In one embodiment, the magnetizer 11 and the magnetic core 12 are made of manganese-zinc ferrite, and may be nickel-zinc ferrite or metal magnetic disk.

Further, the magnetic core 12 (i-shaped) includes a winding post 18 and side plates 19 on two sides, the winding post 18 is disposed between the side plates 19 on two sides, a coil winding 16 is wound on the winding post 18, a plurality of positioning seats 30 are disposed on top ends of the side plates 19, and the positioning seats 30 are convex; the positioning seat 30 is provided with a spacer 20, and the spacer 20 may be a ceramic plate or other insulating high temperature resistant material. The spacer 20 comprises a side wall 42 and an upper seat 43, the side wall 42 and the upper seat 43 are arranged in an L-shaped right angle, a groove 41 matched with the positioning seat 30 is formed on the upper seat 43 (upper cover), and the upper seat 43 is buckled and bonded on the positioning seat 30 (convex type); a plurality of glue dots 44 are arranged in the groove 41, and the upper seat 43 is adhered to the top of the positioning seat 30 through the glue dots 44 in the groove 41.

The side wall 42 is closely arranged at the side edge of the positioning seat 30 and the outer side of the side plate 19, one surface of the side wall 42 facing the upper seat 43 is provided with a plurality of glue dots 44, and the side wall 42 is bonded at the side edge of the positioning seat 30 and the outer side of the side plate 19 through the glue dots 44.

Further, in one embodiment, the upper seat 43 of the spacer 20 is provided with a pad 14 thereon, and the pad 14 is provided with an electrode lead 15 by welding; the electrode leads 15 of the coil winding 16 are respectively welded to the lands 14 of the corresponding spacer 20. The pads 14 and recesses 41 are located on opposite sides of the upper seat 43.

Further, in one embodiment, the positioning seat 30 includes a first positioning seat 31, a second positioning seat 39, a third positioning seat 33, and a fourth positioning seat 35, the top ends of the two side plates 19 are respectively provided with the first positioning seat 31, the second positioning seat 39, the third positioning seat 33, and the fourth positioning seat 35 which are spaced from each other, a first isolation groove 32 is provided between the first positioning seat 31 and the second positioning seat 39, a middle isolation groove 17 is provided between the second positioning seat 39 and the third positioning seat 33, and a second isolation groove 34 is provided between the third positioning seat 33 and the fourth positioning seat 35; the positioning seats 30 on the two side plates 19 are symmetrically (correspondingly) arranged in the same way.

Further, in one embodiment, the spacer 20 includes a first spacer 21, a second spacer 22, a third spacer 23, a fourth spacer 24, a fifth spacer 25, a sixth spacer 26, a seventh spacer 27, and an eighth spacer 28, and the first spacer 21, the second spacer 22, the third spacer 23, and the fourth spacer 24 are respectively fastened and bonded to the first positioning seat 31, the second positioning seat 39, the third positioning seat 33, and the fourth positioning seat 35; the top end of the side plate 19 on the other side is provided with a fifth spacing block 25, a sixth spacing block 26, a seventh spacing block 27 and an eighth spacing block 28 which respectively correspond to the respective positioning seats 30 (convex type).

The fifth spacer 25, the sixth spacer 26, the seventh spacer 27 and the eighth spacer 28 are respectively buckled with the fourth positioning seat 35, the third positioning seat 33, the second positioning seat 39 and the first positioning seat 31 of the other side plate 19.

In one embodiment, the input electrodes on the first separator 21 and the third separator 23 are wound in a double-line positive direction, and the electrode leads 15 of the input electrodes wound in the double-line positive direction are respectively welded on the bonding pads 14 of the first separator 21 and the third separator 23; the input electrodes on the second and

fourth isolation sheets

22 and 24 are parallelly wound in opposite directions, and the electrode leads 15 of the parallelly wound input electrodes are respectively welded on the bonding pads 14 of the second and

fourth isolation sheets

22 and 24.

In one embodiment, the winding output electrodes on the seventh and

fifth separators

27, 25 are wound around in a double positive direction, and the electrode leads 15 of the winding output electrodes wound around in a double positive direction are respectively welded on the bonding pads 14 of the seventh and

fifth separators

27, 25; the take-up output electrodes on the eighth and

sixth separators

28, 26 are wound in opposite directions, and the electrode leads 15 of the take-up output electrodes wound in opposite directions are respectively welded on the bonding pads 14 of the eighth and

sixth separators

28, 26. All electrode lead 15 copper wires are spot welded to the ceramic electrode plane (spacer 20).

In the embodiment, eight bonding pads 14 are arranged, if the eight bonding pads 14 are directly connected with the manganese-zinc body, the bonding pads 14 are in short circuit pairwise and lose the original functions; the spacer 20 (ceramic wafer) is an insulator, and the eight bonding pads 14 are connected to the spacer 20 (ceramic wafer) and isolated from the manganese-zinc body, so that an isolation effect is achieved, and the mutual insulation effect between every two bonding pads 14 is achieved.

The utility model solves the problems that the surface of the magnetic core electrode site is long in electroplating period and cannot be electroplated laterally, increases the binding force of the product after being pasted, changes the magnetic conductivity of the magnetic core, reduces the size of the whole structure, widens the structural limitation of the product, and expands the application scene of the product.

The utility model adopts the spacer 20 (ceramic wafer) to add the glue point 44, the spacer 20 is buckled and bonded with the magnetic core 12; spacer 20 (ceramic sheet) insulator: is isolated between the bonding pad 14 conductor and the magnetic core 12 made of manganese-zinc material, and plays a role in isolation. The main body (magnetizer 11 and magnetic core 12) can be made of manganese-zinc material, and can also be made of other magnetic materials; the spacer 20 may be a ceramic plate or other insulating high temperature resistant material.

The number of the spacers 20 (ceramic plates) can be 1, 2, 3, 4, 5, 6, 7, 8, etc.; the PADs 14 (bonding PADs) on the spacers 20 (ceramic plates) may be solderable conductive structures such as metal PADs, plated PADs, etc.

In the description of the present specification, the terms "connect", "mount", "fix", "set", "have", "front", "upper", and the like are used in a broad sense, for example, the term "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person of ordinary skill in the art, the specific meaning of the terms in the present invention or the utility model can be understood according to specific situations.

The foregoing description of the embodiments is provided to enable one of ordinary skill in the art to understand and apply the techniques herein, and it is to be understood that various modifications may be readily made to the embodiments, and that the general principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present disclosure is not limited to the above embodiments.

Claims

1. A transformer, comprising: a magnetic core (12) and a coil winding (16) arranged on the magnetic core (12); the coil winding device is characterized in that the magnetic core (12) comprises a winding post (18) and two side plates (19) on two sides, the winding post (18) is arranged between the two side plates (19) on two sides, the coil winding (16) is wound on the winding post (18), and a plurality of positioning seats (30) which are mutually spaced are respectively arranged at the top ends of the two side plates (19); the magnetic core (12) comprises a magnetically conductive body;

the positioning seat (30) is provided with a spacing sheet (20);

a bonding pad (14) is arranged on the isolating sheet (20), and an electrode lead (15) is arranged on the bonding pad (14); the plurality of electrode leads (15) of the coil winding (16) are respectively arranged on the corresponding bonding pads (14) of the spacing sheet (20).

2. A transformer according to claim 1, characterized in that the magnetic core (12) comprises a manganese-zinc body or a nickel-zinc body.

3. A transformer according to claim 1, characterized in that the core (12) comprises a manganese zinc ferrite body or a nickel zinc ferrite body.

4. A transformer according to claim 3, characterized in that the transformer further comprises a magnetic conductor (11), the magnetic core (12) being arranged on the magnetic conductor (11), the magnetic conductor (11) and the magnetic core (12) comprising a manganese-zinc-ferrite body.

5. The transformer according to claim 1, wherein the spacer (20) comprises a side wall (42) and an upper seat (43), the upper seat (43) is provided with a groove (41) matched with the positioning seat (30), and the side wall (42) is arranged adjacent to the side edge of the positioning seat (30) and the outer side of the side plate (19); the upper seat (43) is provided with a bonding pad (14), and the bonding pad (14) and the groove (41) are positioned on two opposite surfaces of the upper seat (43);

the spacer (20) is a ceramic plate.

6. A transformer according to claim 5, characterized in that said side wall (42) and said upper seat (43) are arranged in an L-shape, and said upper seat (43) is snap-fitted on said positioning seat (30).

7. A transformer according to claim 6, characterized in that said spacer (20) further comprises a plurality of glue sites (44) disposed in said recess (41) and on a side of said side wall (42) facing said upper seat (43), said upper seat (43) being adhesively disposed on top of said positioning seat (30) by said glue sites (44) in said recess (41); the side wall (42) is bonded and arranged on the side edge of the positioning seat (30) and the outer side of the side plate (19) through the glue point (44).

8. The transformer according to claim 1, wherein the positioning seats (30) comprise a first positioning seat (31), a second positioning seat (39), a third positioning seat (33) and a fourth positioning seat (35), the top ends of the two side plates (19) are respectively provided with the first positioning seat (31), the second positioning seat (39), the third positioning seat (33) and the fourth positioning seat (35) which are spaced from each other, a first isolation groove (32) is arranged between the first positioning seat (31) and the second positioning seat (39), a middle isolation groove (17) is arranged between the second positioning seat (39) and the third positioning seat (33), and a second isolation groove (34) is arranged between the third positioning seat (33) and the fourth positioning seat (35).

9. The transformer according to claim 8, wherein the spacers (20) comprise a first spacer (21), a second spacer (22), a third spacer (23), a fourth spacer (24), a fifth spacer (25), a sixth spacer (26), a seventh spacer (27) and an eighth spacer (28), and the first spacer (21), the second spacer (22), the third spacer (23) and the fourth spacer (24) are respectively arranged in a snap-fit manner corresponding to the first positioning seat (31), the second positioning seat (39), the third positioning seat (33) and the fourth positioning seat (35) of one of the side plates (19); the fifth spacing sheet (25), the sixth spacing sheet (26), the seventh spacing sheet (27) and the eighth spacing sheet (28) are respectively buckled with the fourth positioning seat (35), the third positioning seat (33), the second positioning seat (39) and the first positioning seat (31) of the other side plate (19).

10. The transformer of claim 9, wherein the input electrodes on the first and third spacers (21, 23) are wound in parallel in a bi-line positive direction, and the electrode leads (15) of the input electrodes in parallel in the bi-line positive direction are respectively welded to the pads (14) of the first and third spacers (21, 23);

the input electrodes on the second separator (22) and the fourth separator (24) are wound in opposite directions, and the electrode leads (15) of the input electrodes wound in opposite directions are respectively welded on the bonding pads (14) of the second separator (22) and the fourth separator (24);

the take-up output electrodes on the seventh isolating sheet (27) and the fifth isolating sheet (25) are wound in a double-wire positive direction, and the electrode leads (15) of the take-up output electrodes in the double-wire positive direction are welded on the welding pads (14) of the seventh isolating sheet (27) and the fifth isolating sheet (25) respectively;

the electrode leads (15) of the take-up output electrodes on the eighth isolating sheet (28) and the sixth isolating sheet (26) are welded on the bonding pads (14) of the eighth isolating sheet (28) and the sixth isolating sheet (26) respectively, and the take-up output electrodes on the sixth isolating sheet (26) are wound in a double-wire reverse direction.