CN216353733U

CN216353733U - Transformer framework and transformer

Info

Publication number: CN216353733U
Application number: CN202122306885.6U
Authority: CN
Inventors: 钟科
Original assignee: Zhongtai Electronic Hubei Co ltd
Current assignee: Zhongtai Electronic Hubei Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-19
Anticipated expiration: 2031-09-23

Abstract

The utility model provides a transformer framework and a transformer, wherein the transformer framework comprises: the secondary framework comprises a first plate and a second plate, the first plate is provided with a sunken groove, the sunken groove and the second plate form a secondary winding post, the sunken groove is provided with a wiring hole penetrating through the second plate, and the second plate is provided with a pin group; the primary framework comprises a primary winding post, the primary winding post is arranged in the concave groove, and the wiring hole is used for wiring the primary framework; wherein, the pin group is bent towards the direction of the secondary winding post. According to the transformer framework provided by the utility model, the primary framework is matched in the concave groove of the secondary framework, so that the depths and heights of the primary winding post, the secondary winding post and the concave groove are matched, the bending directions of all pins face the direction of the secondary winding post, the overall height of the transformer is reduced and controlled, the winding of a coil is not influenced, and the routing hole is formed in the second plate sheet, so that the height influence caused by routing is reduced.

Description

Transformer framework and transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a transformer framework and a transformer.

Background

The transformer framework is generally classified according to the types of magnetic cores (or iron cores) used by the transformer, and the types include EI, EE, EF, EPC, ER, RM, PQ, UU and the like, and each type can be distinguished according to the size of the magnetic core (or iron core), such as EE5, EE8, EE13, EE19 and other types with different sizes. The skeleton is divided into: vertical, horizontal, master-slave, drawer type, etc.; the frequency is the number of times of periodic change of the transformer during working and is in Hertz (Hz); according to the use property of the pin of the framework, the framework is divided into a traditional framework (DIP) and a patch framework (SMD).

With the trend of light and thin electronic products, such as ultra-thin lcd tvs, the size of the transformer needs to be limited accordingly, the conventional transformer bobbin is too thick and heavy, and how to obtain a simple and light transformer bobbin is one of the important issues of light and thin transformer.

SUMMERY OF THE UTILITY MODEL

The utility model provides a transformer framework and a transformer, which are used for solving the defect that the transformer framework in the prior art is too thick and heavy and cannot meet the requirement of ultrathin electronic products, and realizing the reasonable design of the arrangement of coils and lead group wires of a secondary framework and the arrangement of coils and lead group wires of a primary framework to reduce the overall thickness of the transformer framework.

The utility model provides a transformer bobbin, comprising:

the secondary framework comprises a first plate and a second plate, wherein the first plate is provided with a sunken groove, the sunken groove and the second plate form a secondary winding post, the sunken groove is provided with a wiring hole penetrating through the second plate, and the second plate is provided with a pin group;

the primary framework comprises a primary winding post, the primary winding post is arranged in the concave groove, and the wiring hole is used for wiring the primary framework;

the pin group is bent towards the direction of the secondary winding post in an assembling state.

According to the transformer framework provided by the utility model, the pin group comprises a first pin arranged at one end far away from the wiring hole and second pins close to two sides of the wiring hole.

According to the transformer framework provided by the utility model, the first plate comprises a first lead groove, and the first lead groove is arranged at one end close to the first pin.

According to the transformer framework provided by the utility model, the second plate comprises a second lead groove, and the second lead groove is arranged on the surface of the second plate, which is deviated from the first plate, and is arranged at one end close to the second pin.

According to the transformer framework provided by the utility model, the first sheet plate comprises a limiting bulge, the limiting bulge is arranged at the opposite side of the first lead groove, the limiting bulge, the first lead groove and the first sheet plate form four-corner clamping surfaces,

the clamping surface is used for being attached to the circuit board.

According to the transformer bobbin provided by the utility model, the primary bobbin comprises a first tray and a second tray, and the primary winding post is formed between the first tray and the second tray.

According to the transformer framework provided by the utility model, the second tray and the primary winding post are arranged in the concave groove, and the first tray is attached to the first plate.

According to the transformer framework provided by the utility model, the second tray is provided with the wire outlet notch, and the wire outlet notch is arranged at the position corresponding to the wire feeding hole.

According to the transformer framework provided by the utility model, the two sides of the wire outlet notch are provided with the wire winding bulges, and the wire winding bulges penetrate through the wire routing holes.

The utility model also provides a transformer, which comprises an iron core, a primary winding coil, a secondary winding coil and the transformer framework,

the primary winding coil is wound on the primary winding post, the secondary winding coil is wound on the secondary winding post, and the iron core is buckled outside the transformer framework.

According to the transformer framework provided by the utility model, the primary framework is matched in the concave groove of the secondary framework, so that the depths and heights of the primary winding post, the secondary winding post and the concave groove are matched, the bending directions of all pins face to the direction of the secondary winding post, the overall height of the transformer is reduced and controlled, the winding of a coil is not influenced, and the wiring hole is formed in the second plate sheet, so that the secondary winding coil on the secondary winding post is conveniently connected with the wiring of the pin group, and the height influence caused by wiring is reduced.

Further, the transformer provided by the utility model adopts the transformer framework of the utility model, so that the transformer framework also has the advantages of the transformer framework.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a secondary bobbin structure of a transformer bobbin provided by the present invention;

FIG. 2 is a schematic diagram of a primary bobbin structure of a transformer bobbin provided by the present invention;

FIG. 3 is a side view of a secondary bobbin of a transformer bobbin provided by the present invention;

FIG. 4 is a side view of a primary bobbin of a transformer bobbin provided by the present invention;

fig. 5 is a second schematic diagram of a secondary bobbin structure of the transformer bobbin according to the present invention.

Reference numerals:

100: a secondary framework; 101: a first sheet; 102: a second sheet;

103: a recessed groove; 104: a secondary winding post; 105: a wiring hole;

106: a first lead groove; 107: a limiting bulge; 108: a clamping surface;

109: a second lead groove; 110: a lead group; 111: a first pin;

112: a second pin; 200: a primary framework; 201: a primary winding post;

202: a first tray; 203: a second tray; 204: a wire outlet notch;

205: winding bulges; 210: and (7) installing holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Embodiments of the present invention will be described below with reference to fig. 1 to 5. It is to be understood that the following description is only exemplary embodiments of the present invention and is not intended to limit the present invention.

As shown in fig. 1 to 4, the present invention provides a transformer bobbin, including: the secondary framework 100 comprises a first plate 101 and a second plate 102, the first plate 101 is provided with a recessed groove 103, the recessed groove 103 and the second plate 102 form a secondary winding post 104, the recessed groove 103 is provided with a wiring hole 105 penetrating through the second plate 102, and the second plate 101 is provided with a pin group 110.

In addition, the primary framework 200 comprises a primary winding post 201, the primary winding post 201 is arranged in the concave groove 103, and the wiring hole 105 is used for wiring the primary framework 200; the lead group 110 is bent toward the secondary winding post 104 in an assembled state.

In other words, a secondary winding post 104 is disposed between the first plate 101 and the second plate 102, the first plate 101 is provided with a concave groove 103, the concave groove 103 and the secondary winding post 104 are of an integral structure, that is, the concave groove 103 forms the secondary winding post 104, and the depth of the concave groove 103 is equivalent to the height of the secondary winding post 104. The primary winding post 201 is disposed in the recess groove 103. The height of the primary winding leg 201 is less than or equal to the depth of the depressed groove 103.

The wiring hole 105 is provided so that the primary winding coil of the primary winding leg 201 directly passes through the wiring hole 105 and is connected to the lead group 110. Reducing the trace height and path. The bending directions of the lead groups arranged on the second plate piece 101 are all towards the direction of the secondary framework 100, so that the plug wire thickness of the lead group 110 is reduced. After the primary framework 200 and the secondary framework 100 are buckled, the side of the primary framework 200 is close to the circuit board, and the transformer framework is in a primary-secondary type.

The lead group 110 of the present invention is assembled in a state where the transformer bobbin is wound with a coil and then mounted on a circuit board. At this time, after the pin group 110 is inserted into the reserved space of the circuit board, the pins of the pin group 110 are bent toward the secondary winding post 104 and mounted on the circuit board.

The leads of the lead group 110 in the unassembled state are all straight, i.e., each lead is on the same horizontal plane or a parallel horizontal plane with the second plate 102.

Further, as shown in fig. 1, in an embodiment of the present invention, the lead group 110 includes a first lead 111 disposed at an end away from the wiring hole 105 and a second lead 112 disposed near both sides of the wiring hole 105.

In other words, the first leads 111 are perpendicular to the second leads 112 in the unfolded state, i.e. the unassembled state. Specifically, the first pin 111 is used for connecting the secondary winding coil on the secondary winding leg 104, and the second pin 112 is used for connecting the primary winding coil on the primary winding leg 201. The primary winding coil protrudes through the wiring hole 105 and is connected to the second lead 112. The thickness caused by wiring can be effectively reduced.

The second pins 112 are designed on both sides of one end of the second plate 102, so that the length of the whole transformer bobbin can be reduced.

With continued reference to fig. 1, in another embodiment of the present invention, the first plate 101 includes a first lead groove 106, the first lead groove 106 being disposed proximate to an end where the first lead 111 is located. The secondary winding coil on the secondary winding leg 104 is wired with the first pin 111 in the first lead slot 106.

Further, in other embodiments of the present invention, the first plate 101 includes a limiting protrusion 107, the limiting protrusion 107 is disposed on an opposite side of the first lead groove 106, the limiting protrusion 107 and the first lead groove 106 form a clamping surface 108 with four corners with the first plate 101, and the clamping surface 108 is used for being attached to a circuit board.

In other words, the raised first lead groove 106 and the limiting protrusion 107 leave out four corners of the first plate 101 to form the clamping surface 108, when the transformer bobbin is mounted on the circuit board, the clamping surface 108 is attached to the circuit board, and the first lead groove 106 and the limiting protrusion 107 sink into the reserved opening of the circuit board, so that the exposed height of the whole transformer bobbin is reduced. And the transformer framework is convenient to limit and mount. The exposed height of the transformer on the circuit board can also be controlled by adjusting the thickness of the clamping surface 108.

In another embodiment of the utility model, as shown in fig. 5, the second plate 102 comprises a second lead groove 109, the second lead groove 109 being arranged on a side of the second plate 102 facing away from the first plate 101 and being arranged near an end where the second pin 112 is located.

Specifically, the primary winding coil comes out of the wiring hole 105 and is wired to the second lead pin 112 in the second lead groove 109 on the back surface of the second plate 102. The second lead 112 forms a lead seat for inserting the lead in the back of the second plate 102 in the injection molding process, and the second lead groove 109 is formed by the orientation of the lead seat. In other words, the second lead groove 109 formed by the gap of the lead seat can effectively reduce the thickness of the transformer bobbin.

As shown in fig. 2, in one embodiment of the present invention, the primary bobbin 200 includes a first tray 202 and a second tray 203, with a primary spool 201 formed between the first tray 202 and the second tray 203.

Further, in another embodiment of the present invention, the second tray 203 and the primary winding post 201 are disposed in the concave groove 103, and the first tray 202 is attached to the first plate 101.

In order to enable the primary framework 200 and the secondary framework 100 to be better matched together, a first limiting protrusion is arranged on the second tray 203, a first limiting groove is arranged in the concave groove 103, and the first limiting protrusion is matched with the first limiting groove.

In addition, in an alternative embodiment of the present invention, the second tray 203 is provided with a wire outlet notch 204, and the wire outlet notch 204 is provided at a position corresponding to the wire feeding hole 105.

In another alternative embodiment of the present invention, winding protrusions 205 are disposed on two sides of the wire outlet notch 204, and the winding protrusions 205 penetrate through the wire feeding hole 105.

Specifically, in order to facilitate the routing of the primary winding coil, an outlet notch 204 and a winding protrusion 205 are formed on the second tray 203 corresponding to the routing hole 105, and the object describes the routing of the primary winding coil.

The utility model also provides a transformer which comprises an iron core, a primary winding coil, a secondary winding coil and the transformer framework, wherein the primary winding coil is wound on the primary winding post 201, the secondary winding coil is wound on the secondary winding post 104, and the iron core is buckled outside the transformer framework.

Wherein, the middle parts of the primary framework 200 and the secondary framework 100 are provided with mounting holes 210 for installing iron cores of matched models in a matching way.

According to the transformer framework provided by the utility model, the primary framework is matched in the concave groove of the secondary framework, so that the depths and heights of the primary winding post, the secondary winding post and the concave groove are matched, the bending directions of all pins face to the direction of the secondary winding post, the overall height of the transformer framework is reduced and controlled, the winding of a coil is not influenced, and the wiring hole is formed in the second plate sheet, so that the secondary winding coil on the secondary winding post is conveniently connected with the wiring of the pin group, and the height influence caused by the wiring is reduced.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A transformer skeleton, comprising:

2. The transformer bobbin of claim 1, wherein the pin set comprises a first pin disposed at an end away from the wire routing hole and a second pin disposed proximate to both sides of the wire routing hole.

3. The transformer bobbin of claim 2, wherein the first plate comprises a first lead groove disposed proximate an end at which the first pin is located.

4. The transformer framework of claim 3, wherein the second sheet comprises a second lead groove disposed on a side of the second sheet facing away from the first sheet and disposed near an end of the second sheet where the second pin is located.

5. The transformer framework of claim 3, wherein the first sheet comprises a limiting protrusion disposed on an opposite side of the first lead groove, the limiting protrusion and the first lead groove form a four-corner clamping surface with the first sheet,

the clamping surface is used for being attached to the circuit board.

6. The transformer bobbin of claim 1, wherein the primary bobbin comprises a first tray and a second tray, the first tray and the second tray forming the primary spool therebetween.

7. The transformer bobbin of claim 6, wherein the second tray and the primary winding post are disposed in the recessed slot, and wherein the first tray is attached to the first plate.

8. The transformer framework of claim 6, wherein the second tray defines an outlet notch, and the outlet notch is disposed at a position corresponding to the wire-passing hole.

9. The transformer framework of claim 8, wherein winding protrusions are arranged on two sides of the wire outlet notch, and the winding protrusions penetrate through the wire routing holes.

10. A transformer, comprising a core, a primary winding coil, a secondary winding coil and the bobbin of any one of claims 1 to 9,