CN213844981U

CN213844981U - High-frequency transformer with secondary led out by flying wire

Info

Publication number: CN213844981U
Application number: CN202120026078.6U
Authority: CN
Inventors: 叶见新
Original assignee: Dongguan Zhongkang Technology Electronics Co ltd
Current assignee: Guilin Pingle Zhongtai Electronic Technology Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-07-30
Anticipated expiration: 2031-01-06

Abstract

The utility model discloses a high-frequency transformer drawn by secondary flying wire, which comprises a wire barrel, wherein the center of the wire barrel is provided with a first central hole, one end of the wire barrel is provided with an upper framework, the center of the upper framework is provided with a second central hole, the upper end surface of the upper framework is symmetrically provided with a plurality of first fixed blocks on the periphery of the second central hole, the upper end surface of the upper framework is symmetrically provided with two first extending plates near the outer periphery, one side surface of the first extending plate is provided with a plurality of winding blocks, the other end of the wire barrel is provided with a lower framework, the bottom end of the lower framework is symmetrically provided with two second extending plates near the outer periphery, the outer ends of the second extending plates are respectively symmetrically provided with two small winding grooves and a large winding groove, the center of the lower framework is provided with a third central hole, the bottom end of the lower framework is symmetrically provided with a plurality of second fixed blocks outside the periphery of the third central hole, and the outer periphery of the wire barrel is provided with a primary coil, a secondary coil is wound between the lower framework and the upper framework, and the upper end and the lower end of the wire barrel are respectively provided with a magnetic core.

Description

High-frequency transformer with secondary led out by flying wire

Technical Field

The utility model relates to a high frequency transformer technical field specifically is a high frequency transformer that secondary was drawn forth with flying lead.

Background

Currently, electronic devices are continuously moving toward smaller size, higher integration, and higher efficiency. As one of the key components in electronic devices, transformers have become smaller in size, lighter in weight, and higher in efficiency, and are always the direction of pursuit of efforts by those skilled in the art. The transformer is used as an important component in a switching power supply circuit, and due to the influence of the process, the power density of the transformer is difficult to be increased all the time, which is not beneficial to batch production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high frequency transformer that secondary was drawn forth with flying lead to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a high-frequency transformer for secondary flying wire leading out comprises a wire barrel, wherein a center hole I is formed in the center of the wire barrel, an upper framework is arranged at one end of the wire barrel, a center hole II is formed in the center of the upper framework, a plurality of fixing blocks I are symmetrically arranged on the periphery of the center hole II on the upper end face of the upper framework, two extending plates I are symmetrically arranged on the position, close to the outer circumference, of the upper end face of the upper framework, a plurality of winding blocks are arranged on one side face of the extending plates I, a lower framework is arranged at the other end of the wire barrel, two extending plates II are symmetrically arranged on the position, close to the outer circumference, of the bottom end of the lower framework, two small winding grooves and a large winding groove are symmetrically arranged on the outer ends of the extending plates respectively, a center hole III is formed in the center of the lower framework, a plurality of fixing blocks II are symmetrically arranged on the outer side of the circumference of the center hole III, the wire barrel is characterized in that a primary coil is arranged on the outer circumference of the wire barrel, a secondary coil is wound between the lower framework and the upper framework, magnetic cores are arranged at the upper end and the lower end of the wire barrel respectively, the magnetic cores are fixed on magnetic core end covers, and a plurality of fixing grooves are symmetrically formed in one side face of each magnetic core end cover.

Preferably, the primary coil is wound by using an insulated wire.

Preferably, the secondary coil is wound by using a film-wrapped multi-strand wire.

Preferably, the first fixing block and the second fixing block are respectively clamped with the fixing grooves.

Preferably, the aperture sizes of the first central hole, the second central hole and the third central hole are equal and are 1mm larger than the outer diameter of the magnetic core.

Preferably, the secondary coil is wound together by the small winding slot and the large winding slot and the winding block, respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the high-frequency transformer with the secondary led out by the flying wire flies out from the top by the two secondary windings of the wire package to form a loop with the middle groove, so that larger current can be made in the same size specification, and the problem that the current cannot be made large due to the limitation of the structural space of the original transformer is solved.

2. According to the high-frequency transformer with the secondary flying lead, the flying lead is not led out through the coil, so that the space can be saved more than that of the original transformer, the flying lead can assist in heat dissipation, the flying lead flies out from the top to reduce the size of the coil, and the high-frequency transformer is more suitable for batch production.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the explosion structure of the present invention;

FIG. 3 is a schematic view of the explosion structure at the junction of the molded line barrel according to the present invention;

fig. 4 is a bottom schematic view of the lower frame of the present invention.

In the figure: 1. a magnetic core end cap; 2. mounting a framework; 3. a first extension plate; 4. a winding block; 5. a lower framework; 6. a secondary coil; 7. fixing grooves; 8. a first fixed block; 9. a primary coil; 10. a wire barrel; 11. a first central hole; 12. a second central hole; 13. a small winding slot; 14. a large winding slot; 15. a third central hole; 16. a second extension plate; 17. a second fixed block; 18. a magnetic core.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a high-frequency transformer for secondary flying wire leading-out comprises a wire barrel 10, wherein a center hole I11 is formed in the center of the wire barrel 10, an upper framework 2 is arranged at one end of the wire barrel 10, a center hole II 12 is formed in the center of the upper framework 2, a plurality of fixing blocks I8 are symmetrically arranged on the periphery of the center hole II 12 on the upper end face of the upper framework 2, two extension plates I3 are symmetrically arranged on the upper end face of the upper framework 2 close to the outer circumference, a plurality of winding blocks 4 are arranged on one side face of each extension plate I3, a lower framework 5 is arranged at the other end of the wire barrel 10, two extension plates II 16 are symmetrically arranged on the bottom end of the lower framework 5 close to the outer circumference, two small winding grooves 13 and two large winding grooves 14 are symmetrically arranged on the outer ends of the extension plates II 16 respectively, a center hole III 15 is formed in the center of the lower framework 5, a plurality of fixing blocks II 17 are symmetrically arranged on the bottom end of the lower framework 5, which is located on the outer side of the circumference of the center hole III 15, be equipped with primary coil 9 on the outer circumference of wire bucket 10, the winding has secondary coil 6 between lower skeleton 5 and the last skeleton 2, the upper and lower end of wire bucket 10 is equipped with magnetic core 18 respectively, magnetic core 18 is fixed on magnetic core end cover 1, the symmetry is equipped with a plurality of fixed slot 7 on the side of magnetic core end cover 1, primary coil 9 adopts the insulated wire to wind, secondary coil 6 adopts the membrane package strand wire to wind, fixed block one 8 and fixed block two 17 are respectively with fixed slot 7 block each other, the aperture size of centre bore one 11 and centre bore two 12 and centre bore three 15 equals, all 1mm bigger than the external diameter of magnetic core 18, secondary coil 6 twines together through little winding groove 13 and big winding groove 14 and winding block 4 respectively.

The working principle is as follows: the magnetic core 18, the upper framework 2, the lower framework 5 and the film-covered wire secondary coil 6, the insulating wire primary coil 9 is formed by assembling and bonding glue and is fixed by a magnetic core-covered adhesive tape, the coil wrapping structure is composed of a primary coil 9 and two secondary coils 6, the secondary coil 6 is used for making two flying wires fly out from the top, the flying lead wires are embedded into pin grooves reserved in the lower framework 5 and are glued and fixed to form pins, the two secondary coils fly out from the top and form a loop with a middle groove, larger current can be made in the same size specification, the lower framework 5 is of a special structure and can receive the two flying wires which are folded back to serve as the pins, the primary coil 9 is wound by the insulating wire, the secondary coil 6 is wound by film-covered multi-strand wires, the secondary coil is wound by the pin which is flown out from the top, the lead wire is sleeved with a UL, and a special lower framework 5 and an upper framework 2 are designed for mounting the secondary flying wires, the transformer is convenient to install, and the lead is not shielded to play a role in auxiliary heat dissipation.

In summary, the high-frequency transformer with the secondary flying wire is characterized in that two secondary windings fly out of the top of the transformer through the coil to form a loop with the middle groove, so that larger current can be made in the same size specification, the problem that the current cannot be made large due to the limitation of the structural space of the original transformer is solved, the space can be saved compared with the original transformer due to the fact that the outgoing wire does not pass through the coil, the flying lead wire can assist in heat dissipation, the flying lead wire flies out of the top to reduce the size of the coil, and the high-frequency transformer is more suitable for batch production.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high frequency transformer that secondary was drawn forth with flying wire, includes wire bucket (10), its characterized in that: the center of the wire barrel (10) is provided with a first central hole (11), one end of the wire barrel (10) is provided with a first framework (2), the center of the first framework (2) is provided with a second central hole (12), the upper end face of the first framework (2) is symmetrically provided with a first plurality of fixed blocks (8) on the periphery of the second central hole (12), the upper end face of the first framework (2) is symmetrically provided with a first two extension plates (3) near the outer circumference, a first side face of the first extension plate (3) is provided with a plurality of winding blocks (4), the other end of the wire barrel (10) is provided with a lower framework (5), the bottom end of the lower framework (5) is symmetrically provided with a second two extension plates (16) near the outer circumference, the outer ends of the second extension plates (16) are respectively symmetrically provided with a second small winding groove (13) and a large winding groove (14), the center of the lower framework (5) is provided with a third central hole (15), the bottom of lower skeleton (5) is located the circumference outside symmetry of three (15) of centre bore is equipped with a plurality of fixed block two (17), be equipped with primary coil (9) on the outer circumference of line bucket (10), lower skeleton (5) with it has secondary coil (6) to go up the winding between skeleton (2), the upper and lower end of line bucket (10) is equipped with magnetic core (18) respectively, magnetic core (18) are fixed on magnetic core end cover (1), the symmetry is equipped with a plurality of fixed slot (7) on the side of magnetic core end cover (1).

2. The high-frequency transformer with a flying wire for secondary use according to claim 1, characterized in that: the primary coil (9) is wound by adopting an insulated wire.

3. The high-frequency transformer with a flying wire for secondary use according to claim 1, characterized in that: and the secondary coil (6) is wound by adopting film-covered stranded wires.

4. The high-frequency transformer with a flying wire for secondary use according to claim 1, characterized in that: the first fixing block (8) and the second fixing block (17) are clamped with the fixing groove (7) respectively.

5. The high-frequency transformer with a flying wire for secondary use according to claim 1, characterized in that: the aperture sizes of the first central hole (11), the second central hole (12) and the third central hole (15) are equal and are 1mm larger than the outer diameter of the magnetic core (18).

6. The high-frequency transformer with a flying wire for secondary use according to claim 1, characterized in that: the secondary coil (6) is wound together with the winding block (4) through the small winding groove (13) and the large winding groove (14), respectively.