CN216562726U

CN216562726U - Transformer bobbin combined structure

Info

Publication number: CN216562726U
Application number: CN202122742938.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Mornsun Guangzhou Science and Technology Ltd
Current assignee: Mornsun Guangzhou Science and Technology Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-17
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a transformer bobbin combination structure, wherein a transformer bobbin is designed into a structure of a primary side bobbin and a secondary side bobbin in a laminated combination mode, a first bobbin can be placed in an accommodating space of a second bobbin after being wound with a wire, then the second bobbin is wound with the wire, a buckle of the first bobbin and a clamping groove of the second bobbin are combined to form a limiting structure, and an accommodating space for winding the transformer is formed between a first central column of the first bobbin and a second central column of the second bobbin. The structure of the utility model can separate the primary winding and the secondary winding without increasing the height and the size of the transformer, and increase the leakage inductance of the primary winding and the secondary winding.

Description

Transformer bobbin combined structure

Technical Field

The utility model relates to the field of transformers, in particular to a transformer bobbin combination structure.

Background

The 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 the working voltage step-down transformer used by the computer host, so the specification of the transformer is quite complicated, and the transformer is rarely in fixed specification and is mostly customized according to the requirements of customers.

In order to deal with the miniaturization of electronic components and the input and output pins of the secondary side and multiple groups of coils, if the transformer is a high-voltage or high-frequency transformer, the isolation distance between each pin and the routing of the coil outlet end need to meet the isolation distance of safety regulations, so the size of the transformer needs to be increased to meet the requirements, and the size is small and the safety regulations need to be met, which is a considerable contradiction for the miniaturized transformer, and therefore, the problem that a designer of the transformer structure is very difficult to overcome is solved.

As shown in fig. 1, in order to separate the primary side from the secondary side and increase the leakage inductance of the primary side and the secondary side in the conventional transformer structure, a blade 28 is often added to a winding center post as a blocking piece to separate the primary side from the secondary side by dividing a winding area into an upper winding area 29 and a lower winding area 30. Such an approach often causes the height of the transformer to be relatively large, which causes the product to become large due to the height of the transformer, and is not favorable for the miniaturization design of the transformer.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a transformer bobbin assembly structure, in which a transformer bobbin is designed to be a structure in which a primary bobbin and a secondary bobbin are stacked, and after a first bobbin is wound, the first bobbin can be placed in an accommodating space of a second bobbin, and then the second bobbin is wound, so that an original side and a secondary side are separated without increasing the height of the transformer, leakage inductance of the primary side and the secondary side is increased, and two bobbins are assembled into one bobbin, and a safety distance can be ensured.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

a transformer bobbin assembly comprising:

the central part of the first winding frame is vertically provided with a first central column, the first central column is provided with a first through hole penetrating through the first central column, the upper end of the first central column extends to form a first upper plate, a buckle is arranged at an opening at the upper end of the first central column, the lower end of the first central column extends to form a first lower plate, and the end parts of two sides of the first lower plate are respectively provided with a first pin zone and a second pin zone;

a second central column is vertically arranged at the center of the second winding frame, the second central column is provided with a second through hole penetrating through the second central column, a second upper plate extends from the upper end of the second central column, and a clamping groove is formed in an opening at the upper end of the second central column;

the clamping buckle of the first winding frame and the clamping groove of the second winding frame are combined to form a limiting structure, and an accommodating space for winding of the transformer is formed between the first center column of the first winding frame and the second center column of the second winding frame.

In the above transformer bobbin assembly structure, the first pin area is provided with a plurality of first binding posts facing vertically downwards, and a wiring groove is arranged between two adjacent binding posts.

In the above transformer bobbin assembly structure, the second pin area is provided with a plurality of second terminals facing downwards vertically, and a wire outlet is provided between two adjacent terminals.

In the transformer bobbin assembly structure, a first winding area is formed between the outer surface of the first center post and the first upper plate and the first lower plate for winding the first coil, and the leading-out end of the first coil is hung to the first binding post through the wiring groove.

In the transformer bobbin combination structure, the first winding area is I-shaped.

In the transformer bobbin assembly structure, a second winding area is formed between the outer surface of the second center post and the second upper plate for winding the second coil, and the leading-out end of the second coil is hung on the second winding post through the wire outlet hole.

In the transformer bobbin assembly structure, the second winding area is T-shaped.

Compared with the prior art, the structure of the utility model can separate the primary winding and the secondary winding without increasing the height and the size of the transformer, thereby increasing the leakage inductance of the primary winding and the secondary winding.

The utility model will be described in detail below with reference to the drawings and specific examples, but the utility model is not limited thereto.

Drawings

FIG. 1 is a schematic diagram of a prior art transformer with a separated primary and secondary side structure;

FIG. 2 is an exploded view of the transformer bobbin assembly of the present invention;

FIG. 3 is an exploded view of the first and second bobbins according to the present invention.

Wherein, the reference numbers:

10 second bobbin

11 second upper plate

12 second central column

13 second bobbin holder slot

14 first bobbin bracket buckle

15 first upper plate

16 first central column

17 first leg area

18 first terminal post

19 first lower plate

20 second leg area

21 second terminal

22 first bobbin

23 outlet hole

24 first through hole

25 second through hole

26 iron core

27 lower iron core

28 blade

29 upper winding area

30 lower winding area

Detailed Description

To further clarify the techniques, means and functions of the present invention adopted by those skilled in the art to achieve the intended purpose, reference should be made to the following detailed description of the utility model and accompanying drawings, which are believed to be a further and specific understanding of the objects, features and characteristics of the utility model, and to the accompanying drawings, which are provided for purposes of reference and illustration only and are not intended to be limiting of the utility model.

As shown in fig. 2 to 3, the transformer bobbin assembly structure of the present invention includes a first bobbin 22, a first central pillar 16 is vertically disposed at the center of the first bobbin 22, the first central pillar 16 has a first through hole 24 penetrating through the first central pillar, a first upper plate 15 extends from the upper end of the first central pillar 16, a buckle 14 is disposed at an opening at the upper end of the first central pillar 16, a first lower plate 19 extends from the lower end of the first central pillar 16, and a first pin zone 17 and a second pin zone 20 are respectively disposed at two side ends of the first lower plate 19; the first pin area 17 is provided with a plurality of first binding posts 18 which vertically face downwards, a wiring groove is arranged between two adjacent posts, the second pin area is provided with a plurality of second binding posts 21 which vertically face downwards, and a wire outlet hole 23 is arranged between two adjacent posts.

A second central pillar 12 is vertically arranged at the center of the second bobbin 10, the second central pillar 12 is provided with a second through hole 25 penetrating through the second central pillar, a second upper plate 11 extends from the upper end of the second central pillar 12, and a clamping groove 13 is arranged at the opening of the upper end of the second central pillar 12;

the buckle 14 of the first bobbin 22 and the slot 13 of the second bobbin 10 are combined to form a limiting structure, and an accommodating space for winding the transformer is formed between the first center post 18 of the first bobbin 22 and the second center post 12 of the second bobbin 10.

A first winding area is formed between the outer side surface of the first central column 16 and the first upper plate 15 and the first lower plate 19, the first winding area is in an I shape and is used for winding the first coil, and the leading-out end of the first coil is hung to the first binding post 18 through the wiring groove.

A second winding area is formed between the outer side surface of the second central column 12 and the second upper plate 11, the second winding area is in a T shape and is used for winding a second coil, and the leading-out end of the second coil is hung on the second winding column 21 through a wire outlet hole 23.

The transformer bobbin combined structure winds a first coil in a first winding area of a first bobbin 22, and after a leading-out end of the first coil is hung to a first binding post 18 through a wiring groove, a second through hole 25 of a second bobbin 10 covers the first winding area and the first coil wound by the first winding area, a buckle 14 of the first bobbin 22 and a clamping groove 13 of the second bobbin 10 are combined to form a limiting structure, then a second coil is wound in the second winding area of the second bobbin 10, and the leading-out end of the second coil is hung to a second winding post 21 through a wire outlet 23.

Claims

1. A transformer bobbin integrated configuration, characterized by, includes:

2. The transformer bobbin assembly structure of claim 1, wherein: the first pin area is provided with a plurality of first binding posts which vertically face downwards, and a wiring groove is arranged between two adjacent binding posts.

3. The transformer bobbin assembly structure of claim 1, wherein: the second pin area is provided with a plurality of second binding posts which vertically face downwards, and a wire outlet hole is formed between two adjacent binding posts.

4. The transformer bobbin assembly structure of claim 2, wherein: a first winding area is formed between the outer side surface of the first central column and the first upper plate and between the outer side surface of the first central column and the first lower plate and used for winding a first coil, and the leading-out end of the first coil is hung to the first wiring terminal through a wiring groove.

5. The transformer bobbin assembly structure of claim 4, wherein: the first winding area is in an I shape.

6. The transformer bobbin assembly structure of claim 3, wherein: and a second winding area is formed between the outer side surface of the second central column and the second upper plate and used for winding a second coil, and the leading-out end of the second coil is hung to the second winding column through a wire outlet hole.

7. The transformer bobbin assembly structure of claim 6, wherein: the second winding area is T-shaped.