CN212648038U

CN212648038U - Wire rack of transformer

Info

Publication number: CN212648038U
Application number: CN202021681842.5U
Authority: CN
Inventors: 蔡景生
Original assignee: Dongguan Shoubang Electronics Co ltd
Current assignee: Dongguan Shoubang Electronics Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-02
Anticipated expiration: 2030-08-13

Abstract

The utility model discloses a line frame of transformer, including PIN platform and wire winding structure, the wire winding structure is located the top of PIN platform, and the PIN bench is equipped with the terminal, the terminal is inserted and is established the bottom that structural just is located the PIN platform of bottom of PIN platform. The coil winding is on winding structure, is located the top of PIN platform, the top of PIN platform promptly, and the terminal is located the bottom of PIN platform, compares in prior art terminal by PIN bench top portion insert the PIN platform downwards, the utility model discloses a creeping distance or creepage distance between terminal and the coil have increased, avoid the insulating material between coil and the terminal to be polarized and lead to insulating material to present electrified phenomenon.

Description

Wire rack of transformer

Technical Field

The utility model relates to a transformer, concretely relates to electronic product's miniature transformer.

Background

A miniature transformer applied to electronic products comprises a wire frame and an iron core, wherein the wire frame is used for winding a coil and mounting terminals, the iron core is in a shape like a Chinese character 'ri', surrounds the coil and is formed by splicing two E-shaped iron cores. The portion of the bobbin for mounting the terminals is referred to as a PIN block and the portion of the bobbin for winding the coil is referred to as a winding structure. According to prior art, the wire winding structure is located the top of PIN platform, and the PIN platform is inserted downwards by the top of PIN platform to the terminal.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: the creepage distance between the coil and the terminal is increased.

In order to solve the technical problem, the utility model provides a following technical scheme: a line frame of transformer, including PIN platform and wire winding structure, the wire winding structure is located the top of PIN platform, is equipped with the terminal on the PIN platform, the terminal is inserted and is established on the substructure of PIN platform and be located the bottom of PIN platform.

The coil winding is on winding structure, is located the top of PIN platform, the top of PIN platform promptly, and terminal (PIN promptly) is located the bottom of PIN platform, compares in prior art terminal by PIN bench top portion insert the PIN platform downwards, the utility model discloses a creeping distance or creepage distance between terminal and the coil have increased, avoid the insulating material between coil and the terminal to be polarized and lead to insulating material to present electrified phenomenon.

Drawings

The invention will be further explained with reference to the drawings:

FIG. 1 is a schematic view of a bobbin of a transformer;

FIG. 2 is a schematic view of the bobbin of FIG. 1 viewed from below;

fig. 3 is a schematic view of the bobbin of fig. 1 viewed from the right side.

The symbols in the drawings illustrate that:

10. a PIN pad;

20. a winding structure; 21. a winding area; 22. a partition plate; 23. an opening;

30. a terminal; 31. a horizontal portion; 32. a vertical portion;

40. a convex table;

50. a wire passing groove; 51. a left side bus slot; 52. and a right bus slot.

Detailed Description

Referring to fig. 1, a bobbin for a transformer includes a PIN platform 10 and a winding structure 20, the winding structure is located at the top of the PIN platform, and the PIN platform is provided with terminals 30, which are inserted into the bottom structure of the PIN platform and located at the bottom of the PIN platform.

The terminal in the prior art is inserted downward into the PIN counter from the top of the PIN counter, and a terminal portion is left on the PIN counter, and a creepage distance or creepage distance between the terminal portion and the coil is set as a first creepage distance. The creeping distance between terminal and the coil is established to second creeping distance, because the utility model discloses a terminal is located the bottom of PIN platform completely, consequently, second creeping distance is greater than first creeping distance.

With reference to fig. 1 and 2, the number of the terminals 30 is several, the bottom structure includes several convex platforms 40, each terminal is bent, and the terminals are inserted on the convex platforms in a one-to-one manner. The tip wire of coil twines in proper order at the both ends that the terminal was bent, compares in setting up wire-wound convex part at the edge of PIN platform (the tip wire of coil twines on the convex part after, twines on the terminal again, the convex part is equivalent to the one end that the terminal was bent), the structure of line frame is simpler, and processing is convenient.

Each convex table 40 is provided with a left-right direction insertion hole, and the inner side wall of each convex table is provided with a positioning groove. Each terminal 30 is L-shaped and includes a horizontal portion 31 and a vertical portion 32. The horizontal part is inserted into the jack from inside to outside, and the vertical part is matched in the positioning groove to realize the positioning of the terminal. The end portion of the coil is wound around the horizontal portion 31 and then wound around the vertical portion 32. Even if the end leads of the coil push-pull the terminals 30, the terminals can be kept in a stable state, which is beneficial to the stability of the structure and performance of the whole transformer. The winding of the end part wire of the coil and the horizontal part 31 can effectively improve the fixing force of the coil and the coil holder, and is beneficial to the stability of the structure and the performance of the whole transformer.

As shown in fig. 2, a wire passing groove 50 is provided between two adjacent convex platforms 40. Referring to fig. 1 and 3, a left bus slot 51 is disposed in the middle of the row of convex platforms on the left side of the bobbin, a right bus slot 52 is disposed in the middle of the row of convex platforms on the right side of the bobbin, and a plurality of end wires of the coil pass through the left bus slot and the right bus slot, then are shunted to each wire passing slot 50, and then are connected to the corresponding terminal 30.

As shown in fig. 1, the winding structure 20 is provided with a plurality of winding regions 21. Alternatively, the number of winding regions is two, and the winding regions are separated by a partition 22 having openings 23, so that the coil can be wound around the two winding regions at a time without winding separately, thereby reducing the winding process time and simplifying the process. And the coupling capacitor of the winding structure with the plurality of winding areas has smaller capacitance value than that of the traditional single-area winding structure due to the series connection of the plurality of winding areas so as to reduce the generation of leakage inductance.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A line frame of transformer, including PIN platform (10) and wire winding structure (20), the wire winding structure is located the top of PIN platform, is equipped with terminal (30), its characterized in that on the PIN platform: the terminal is inserted on the bottom structure of PIN platform and is located the bottom of PIN platform.

2. A bobbin for a transformer according to claim 1, wherein: the number of terminals (30) is a plurality of, and the bottom structure includes a plurality of convex platforms (40), and each terminal is the form of bending, and a plurality of terminals are inserted on a plurality of convex platforms with the mode of one-to-one.

3. A bobbin for a transformer according to claim 2, wherein: each convex table (40) is provided with a left-right jack, each terminal (30) is L-shaped and comprises a horizontal part (31) and a vertical part (32), and the horizontal part is inserted into the jack.

4. A bobbin for a transformer according to claim 2, wherein: a thread passing groove (50) is arranged between two adjacent convex platforms (40).

5. A bobbin for a transformer according to claim 1, wherein: the winding structure (20) is provided with a plurality of winding areas (21).