CN213025762U

CN213025762U - Transformer framework structure for increasing creepage distance between coils

Info

Publication number: CN213025762U
Application number: CN202021966499.9U
Authority: CN
Inventors: 蔡景生
Original assignee: Dongguan Shoubang Electronics Co ltd
Current assignee: Dongguan Shoubang Electronics Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-04-20
Anticipated expiration: 2030-09-10

Abstract

The utility model discloses an increase transformer skeleton texture of edgewise distance between coil, including the first skeleton that is used for the coiling primary, the second skeleton that is used for the coiling secondary, the second skeleton is equipped with the storage tank that can hold first skeleton, and first skeleton is equipped with the lid with linking department of second skeleton, and the lid is located near the first terminal of first skeleton. The first skeleton assembly of coiling primary is in the storage tank, the lid assembly is in the junction of first skeleton and second skeleton, and is located near the first terminal of first skeleton, so, the lid can increase the creeping distance between primary and the secondary coil to and increase the creeping distance of first terminal and secondary coil, ensure transformer's performance and safety.

Description

Transformer framework structure for increasing creepage distance between coils

Technical Field

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

Background

The creepage distance, or creepage distance, is the shortest distance between two adjacent conductors or between one conductor and the surface of the adjacent motor casing measured along the insulating surface. A small transformer for electronic products comprises a framework, a primary coil and a secondary coil, wherein the primary coil and the secondary coil are wound on the framework, and a sufficient creeping distance is required between the primary coil and the secondary coil.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem that: the creepage distance between the primary coil and the secondary coil of the small transformer is increased.

In order to solve the technical problem, the utility model provides a following technical scheme: increase the transformer skeleton texture of edgewise distance between the coil, including the first skeleton that is used for the coiling primary coil, be used for the second skeleton of coiling secondary coil, the second skeleton is equipped with the storage tank that can hold first skeleton, and the first skeleton is equipped with the lid with the linking department of second skeleton, and the lid is located near the first terminal of first skeleton.

The first skeleton assembly of coiling primary is in the storage tank, the lid assembly is in the junction of first skeleton and second skeleton, and is located near the first terminal of first skeleton, so, the lid can increase the creeping distance between primary and the secondary coil to and increase the creeping distance of first terminal and secondary coil, ensure transformer's performance and safety.

Drawings

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

FIG. 1 is a top view of second armature 20;

FIG. 2 is a schematic diagram of a transformer bobbin configuration for increasing creepage distance between coils;

fig. 3 is a front view of the second bobbin 20;

fig. 4 is a right side view of the second bobbin 20;

fig. 5 is a bottom view of the second frame 20;

fig. 6 is a perspective view of the second bobbin 20;

fig. 7 is a top view of the first bobbin 10;

fig. 8 is a front view of the first bobbin 10;

fig. 9 is a right side view of the first skeleton 10;

fig. 10 is a bottom view of the first frame 10;

fig. 11 is a perspective view of the first bobbin 10;

FIG. 12 is a top view of the cover 30;

fig. 13 is a perspective view of the cover 30;

FIG. 14 is a front view of the cover 30;

FIG. 15 is a right side view of the cover 30;

fig. 16 is a bottom view of the cover 30;

fig. 17 is a perspective view of the cover 30 in fig. 13 as viewed from below.

The symbols in the drawings illustrate that:

10. a first skeleton; 11. a first terminal; 12. a chute; 14. a first terminal base; 15. an island-shaped block; 16. a slot;

20. a second skeleton; 21. a containing groove; 22. a second terminal; 23. salient points; 24. a second terminal block; 25. a winding part;

30. a cover; 31. a limiting groove; 32. a convex portion; 33. a groove; 34. a containing groove;

40. and (3) an iron core.

Detailed Description

As shown in fig. 2, the transformer bobbin structure for increasing the creepage distance between the coils includes a first bobbin 10 for winding the primary coil and a second bobbin 20 for winding the secondary coil, the second bobbin is provided with a receiving groove 21 capable of receiving the first bobbin, as shown in fig. 6, a cover 30 is provided at the joint of the first bobbin and the second bobbin, and the cover is located near the first terminal 11 of the first bobbin.

Referring to fig. 7 to 11, a first terminal 11 is disposed at a left end of the first frame 10, a sliding groove 12 is disposed at a left end of the first frame, referring to fig. 1 and 3 to 6, the second terminal 22 is disposed at a right end of the second frame 20, protruding points 23 are disposed at front and rear sides of the left end of the second frame, and referring to fig. 12 to 17, the cover 30 is disposed with a protrusion 32 capable of being engaged with the sliding groove and a groove 33 capable of being engaged with the protruding points.

Referring to fig. 12 to 17, the cover 30 is provided with a receiving groove 34 and a limiting groove 31, and the grooves 33 are located at the front and rear sides in the receiving groove 34. In actual production, after the primary coil is wound on the first bobbin, the first bobbin is fitted into the accommodating groove 21. Then, the cover 30 translates from the left side of the first framework to the right, the accommodating groove is sleeved at the left end of the second framework 20, and the limiting groove is matched with the left end of the first framework 10; simultaneously, the convex portion 32 of the cover slides along the slide groove 12 of the first frame. The cover is fitted in place when the groove 33 of the cover engages the stud 23 of the second skeleton. After that, the first terminal 11 is bent. Wherein, the contact part of the cover and the first framework and the second framework is glued.

The slot 16 is formed in the middle of the first bobbin, and the iron core 40 is inserted into the slot such that the primary coil is wound around the outer periphery of the iron core and the secondary coil is wound around the outer periphery of the primary coil. The first terminal 11 is located at the left end of the entire bobbin structure and the second terminal 22 is located at the right end of the entire bobbin structure.

As shown in fig. 11, the first terminals 11 are disposed on the first terminal seats 14 of the first bobbin 10, and an island-shaped block 15 is disposed between two adjacent first terminal seats. The island-shaped blocks can isolate two adjacent first terminals and can also be wound with a lead connected with the first terminals, and the function of stabilizing the lead is achieved.

Referring to fig. 3 and 6, the second terminal 22 is disposed on a second terminal block 24 of the second frame 20, a winding portion 25 is disposed below the second terminal block, and the second terminal is bent downward. The wire connected to the second terminal can be wound around the winding portion 25, which serves to stabilize the wire.

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. Increase transformer skeleton texture of edgewise distance between coil, including first skeleton (10) that are used for the coiling primary coil, second skeleton (20) that are used for the coiling secondary coil, the second skeleton is equipped with storage tank (21) that can hold first skeleton, its characterized in that: the joint of the first framework and the second framework is provided with a cover (30), and the cover is positioned near the first terminal (11) of the first framework.

2. The transformer bobbin structure of claim 1 wherein: the left end of first skeleton (10) is equipped with first terminal (11), and the left end of first skeleton is equipped with spout (12), and second terminal (22) are located the right-hand member of second skeleton (20), and the left end of second skeleton is equipped with salient point (23), and lid (30) are equipped with can with spout complex convex part (32) to and, can with salient point complex recess (33).

3. The transformer bobbin structure of claim 2 wherein: the cover (30) is provided with a containing groove (34) and a limiting groove (31), the containing groove is matched with the left end of the second framework (20), and the limiting groove is matched with the left end of the first framework (10).

4. The transformer bobbin structure of claim 2 wherein: the first terminal (11) is arranged on a first terminal seat (14) of the first framework (10), and an island-shaped block (15) is arranged between every two adjacent first terminal seats.

5. The transformer bobbin structure of claim 1 wherein: the second terminal (22) is arranged on a second terminal seat (24) of the second framework (20), a winding part (25) is arranged below the second terminal seat, and the second terminal is bent downwards.