CN219677029U

CN219677029U - High-frequency transformer with breakdown preventing structure

Info

Publication number: CN219677029U
Application number: CN202320829370.0U
Authority: CN
Inventors: 许钦; 刘建
Original assignee: Jiujiang Fuoute Electronics Co ltd
Current assignee: Jiujiang Fuoute Electronics Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-09-12
Anticipated expiration: 2033-04-14

Abstract

The utility model provides a high-frequency transformer with an anti-breakdown structure, which comprises a transformer main body, wherein a winding post is arranged on the inner side of the transformer main body, a coil package is wound on the outer side of the winding post, two sides of the winding post are connected with a framework, the left end of the framework is provided with a plug-in stitch, the left end of the coil package is led out with a lead-out wire head, the lead-out wire head is wound and welded on the plug-in stitch, the right end of the coil package is led out with a tail-in wire head, a first through hole is formed in the right end of the framework, a bending groove cavity is formed in the outer side of the first through hole, the inner side of the upper end of the bending groove cavity is connected with a second through hole, and an elbow cavity is formed in the inner side of the second through hole. The utility model solves the problems that the stability of the tail end inside the existing high-frequency transformer is poor after the tail end is fixed, and oxidation corrosion is easy to cause after the tail end is exposed in the air for a long time.

Description

High-frequency transformer with breakdown preventing structure

Technical Field

The utility model relates to the technical field of high-frequency transformers, in particular to a high-frequency transformer with an anti-breakdown structure.

Background

The transformer is a device for converting ac voltage, current and impedance, and when ac current is applied to the primary coil, ac magnetic flux is generated in the core (or core), and voltage (or current) is induced in the secondary coil. The transformer consists of iron core and coil with two or more windings, the winding connected to power source is called primary winding and the other windings are called secondary winding.

The high-frequency transformer is a power transformer with the working frequency exceeding the intermediate frequency (10 kHz), and is mainly used as a high-frequency switching power transformer in a high-frequency switching power supply, and also used as a high-frequency inversion power transformer in a high-frequency inversion power supply and a high-frequency inversion welding machine. The working frequency can be classified into several grades of 10kHz-50kHz, 50kHz-100kHz, 100 kHz-500 kHz, 500 kHz-1 MHz and more than 10 MHz. When a destructive discharge occurs in a solid dielectric, it is called breakdown. Upon breakdown, traces are left in the solid dielectric, permanently losing the insulating properties of the solid dielectric. Such as when the dielectric paperboard breaks down, a hole is left in the paperboard.

The prior publication number is CN214753332U provides a high-frequency transformer with an anti-breakdown structure, and belongs to the field of high-frequency transformers. The utility model comprises a magnet, a framework and a pin, wherein an accommodating space is formed in the magnet, the framework is arranged in the accommodating space, one end of the pin is fixedly connected with the framework, the other end of the pin penetrates through the magnet and stretches out, the framework is provided with a wire layer formed by winding wires, a fixing adhesive tape is wound outside the wire layer, the framework is also provided with a breakdown preventing structure, and the tail-winding end of the wires can be fixed on the breakdown preventing structure. The beneficial effects of the utility model are as follows: through setting up at high frequency transformer's skeleton and prevent puncture structure, the wire layer ending wire can be fixed prevent puncture structure is last, no longer turns back winding coil middle isolation with insulating tape, has avoided the wire to puncture insulating tape and has brought the risk of interlaminar short circuit, has solved high frequency transformer and has broken down the problem damaged by the breakdown easily at the during operation.

The high-frequency transformer related to the above patent document fixes the ending wire through the breakdown preventing structure, but no matter the ending wire head is fixed in the lead notch by adopting a welding mode or a winding mode, the ending wire head is exposed in the air, the oxidation corrosion of the wire insulating layer is easy to be caused for a long time, in addition, the lead notch which damages the breakdown preventing structure exists at high temperature of welding, and the winding fixation leads to poor connection strength and stability.

Disclosure of Invention

In order to overcome the defects existing in the prior art, a high-frequency transformer with an anti-breakdown structure is provided, so that the problems that the stability of the tail end inside the existing high-frequency transformer after being fixed is poor, and oxidation corrosion is easily caused by exposure to air for a long time are solved.

To achieve the above object, there is provided a high-frequency transformer having a breakdown preventing structure, comprising:

the transformer main part, the inboard of transformer main part is provided with the wrapping post, and the outside winding of wrapping post has the coil package to the both sides of wrapping post are connected with the skeleton, the left end of skeleton is provided with the grafting stitch, and the left end of coil package draws forth the lead-out wire head, and the lead-out wire head winding welding is on the grafting stitch, and the right-hand member of coil package draws forth the end of a thread head, first through-hole has been seted up to the right-hand member inside of skeleton, and the bending groove chamber has been seted up in the outside of first through-hole, and the upper end inboard of bending groove chamber is connected with the second through-hole, and the elbow chamber has been seted up to the inboard of second through-hole, the end of a thread head of a thread of receiving passes first through-hole, bending groove chamber and second through-hole in proper order, and the end of a thread head of a thread of receiving is inserted elbow intracavity portion, and the inside of elbow chamber is provided with the extrusion piece.

Further, the elbow cavity is connected with the second through hole in a T-shaped mode, and the extrusion block is fixed at the upper end of the elbow cavity.

Further, the extrusion block is arranged as a rectangular block, and the lower end of the rectangular block faces the end face of the second through hole to be provided with an inclined chamfer.

Further, the bending groove cavity is arranged to be of a right-angle groove cavity structure, and the tail end of the tail wire is of a U-shaped structure with an inward opening inside the bending groove cavity and the second through hole.

Further, insulating sealant is filled in the first through hole and the bending groove cavity, a sealing plate is arranged at the outer end of the bending groove cavity, and the sealing plate is fixed at the outer end of the framework through a fixing bolt.

Further, the outer end of the tail end is inserted into the lower side space of the elbow cavity, and the insulating sealant penetrates into the elbow cavity through the second through hole.

Further, insulating tape is wound on the outer side of the coil package, and two ends of the coil package are limited by the framework.

The high-frequency transformer with the breakdown preventing structure has the advantages that the first through hole is used for conveniently leading out the tail end, the tail end is bent for the first time through the bending groove cavity, the bent tail end is inserted into the elbow cavity through the second through hole, the tail end of the tail end is forced to be bent downwards under the action of the extrusion block, and finally the bending groove cavity, the first through hole and the second through hole are filled with insulating sealant to achieve sealing protection and fixing effects, and then the bending groove cavity is sealed through the sealing plate and the fixing bolt, so that stable fixing of the tail wire and sealing oxidation corrosion preventing effects are achieved.

Drawings

Fig. 1 is a schematic cross-sectional front view of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a structure a in fig. 1 according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a structure B in fig. 2 according to an embodiment of the present utility model.

1. A transformer body; 2. a winding post; 3. a coil pack; 4. an insulating tape; 5. a skeleton; 6. ending the wire ends; 7. a lead-out wire head; 8. inserting pins; 9. a first through hole; 10. a bending groove cavity;

11. insulating sealant; 12. a sealing plate; 13. a fixing bolt; 14. extruding a block; 15. an elbow cavity; 16. and a second through hole.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

Fig. 1 is a schematic cross-sectional front view of an embodiment of the present utility model, fig. 2 is a schematic structural diagram of fig. 1 a of an embodiment of the present utility model, and fig. 3 is a schematic structural diagram of fig. 1B of an embodiment of the present utility model.

Referring to fig. 1 to 3, the present utility model provides a high frequency transformer having a breakdown preventing structure, comprising: the transformer comprises a transformer main body 1, a framework 5, a first through hole 9, a bending groove cavity 10, insulating sealant 11, a sealing plate 12, a extrusion block 14, an elbow cavity 15 and a second through hole 16.

Specifically, the inboard of transformer main part 1 is provided with wrapping post 2, and the outside winding of wrapping post 2 has coil package 3, and the both sides of wrapping post 2 are connected with skeleton 5, the left end of skeleton 5 is provided with grafting stitch 8, and the left end of coil package 3 draws forth end of a thread 7, and draw forth end of a thread 7 winding welding on grafting stitch 8, and the right-hand member of coil package 3 draws forth receipts end of a thread 6, first through-hole 9 has been seted up to the inside right-hand member of skeleton 5, and bending groove chamber 10 has been seted up in the outside of first through-hole 9, and the upper end inboard of bending groove chamber 10 is connected with second through-hole 16, elbow chamber 15 has been seted up to the inboard of second through-hole 16, receive end of a thread 6 passes first through-hole 9 in proper order, bending groove chamber 10 and second through-hole 16, and receive end of a thread 6 inserts elbow chamber 15 inside, and elbow chamber 15's inside is provided with extrusion piece 14.

In this embodiment, the winding post 2 and the skeletons 5 at both ends are provided in an integrally connected i-shaped structure.

When the transformer body 1 is installed, the plug pins 8 are welded downwards.

The number of winding posts 2 is set to at least two.

The elbow cavity 15 is connected with the second through hole 16 in a T-shaped manner, and the extrusion block 14 is fixed at the upper end of the elbow cavity 15; the extrusion block 14 is provided as a rectangular block, and the lower end of the rectangular block is provided with an inclined chamfer toward the end face of the second through hole 16.

In this embodiment, the extrusion block 14 plays a role in guiding deformation of the end of the tail end 6, so that the tail end 6 is hooked inside the elbow cavity 15, and connection firmness is improved.

The bending groove cavity 10 is provided with a right-angle groove cavity structure, and the tail end 6 is provided with a U-shaped structure which is opened inwards in the bending groove cavity 10 and the second through hole 16.

In this embodiment, the bending groove cavity 10 is used as an extra margin storage space for bending the wire ends, and the margin of the wire ends is manually flattened inside the bending groove cavity 10 after bending.

The first through hole 9 and the inside of the bending groove cavity 10 are filled with insulating sealant 11, and the outer end of the bending groove cavity 10 is provided with a sealing plate 12, and the sealing plate 12 is fixed at the outer end of the skeleton 5 through a fixing bolt 13.

In the present embodiment, the sealing plate 12 plays a role of protecting the insulating sealant 11.

The outer end of the pigtail head 6 is inserted into the lower space of the elbow cavity 15, and the insulating sealant 11 penetrates into the inside of the elbow cavity 15 through the second through hole 16.

In the present embodiment, the connection stability of the stub portion 6 is enhanced after the insulating sealant 11 is cured.

The outside winding of coil package 3 has insulating tape 4, and the both ends of coil package 3 are spacing by skeleton 5.

The high-frequency transformer with the breakdown preventing structure can effectively solve the problems that the existing high-frequency transformer is poor in stability after the tail end is fixed and is easy to cause oxidation corrosion for a long time after being exposed in air, the tail end is conveniently led out by the aid of the first through hole, then the tail end is bent for the first time through the bending groove cavity, the bent tail end is inserted into the elbow cavity through the second through hole, then the end of the tail end is forced to be bent downwards under the action of the extrusion block, finally the bending groove cavity, the first through hole and the second through hole are filled with insulating sealant, sealing protection and fixing effects are achieved, the bending groove cavity is sealed through the sealing plate and the fixing bolt, and stable fixing of the tail end wire and sealing oxidation corrosion preventing effects are achieved.

Claims

1. A high-frequency transformer having an anti-breakdown structure, comprising: the transformer main part (1), the inboard of transformer main part (1) is provided with wrapping post (2), and the outside winding of wrapping post (2) has coil package (3) to the both sides of wrapping post (2) are connected with skeleton (5), the left end of skeleton (5) is provided with grafting stitch (8), and the left end of coil package (3) has drawn forth thread head (7), and draw forth thread head (7) winding welding on grafting stitch (8), and the right-hand member of coil package (3) has drawn forth receipts end of a thread head (6), first through-hole (9) have been seted up to the right-hand member inside of skeleton (5), and bending groove chamber (10) have been seted up in the outside of first through-hole (9), and bending groove chamber (10) upper end inboard is connected with second through-hole (16), elbow chamber (15) have been seted up to the inboard of second through-hole (16), end of a thread head (6) passes first through-hole (9), bending groove chamber (10) and second through-hole (16) in proper order, and end of a thread head (6) insert elbow chamber (15) inside, and the inside extrusion of taking up of elbow chamber (15) has been set up.

2. The high-frequency transformer with the breakdown preventing structure according to claim 1, wherein the elbow cavity (15) is connected with the second through hole (16) in a T-shaped mode, and the extrusion block (14) is fixed at the upper end of the elbow cavity (15).

3. A high-frequency transformer with breakdown preventing structure according to claim 1, characterized in that the pressing block (14) is provided as a rectangular block, and the lower end of the rectangular block is provided with an inclined chamfer toward the end face of the second through hole (16).

4. The high-frequency transformer with the breakdown preventing structure according to claim 1, wherein the bending groove cavity (10) is of a right-angle groove cavity structure, and the tail end (6) is of a U-shaped structure with an opening towards the inner side inside the bending groove cavity (10) and the second through hole (16).

5. The high-frequency transformer with the breakdown preventing structure according to claim 1, wherein the first through hole (9) and the inside of the bending groove cavity (10) are filled with insulating sealant (11), a sealing plate (12) is arranged at the outer end of the bending groove cavity (10), and the sealing plate (12) is fixed at the outer end of the framework (5) through a fixing bolt (13).

6. The high-frequency transformer with the breakdown preventing structure according to claim 1, wherein the outer end of the tail end (6) is inserted into the lower side space of the elbow cavity (15), and the insulating sealant (11) is permeated into the inside of the elbow cavity (15) through the second through hole (16).

7. The high-frequency transformer with the breakdown preventing structure according to claim 1, wherein the insulating tape (4) is wound on the outer side of the coil pack (3), and two ends of the coil pack (3) are limited by the framework (5).