CN201160028Y - Transformer device - Google Patents

Abstract

The utility model discloses a transformer, including a wire winding seat and a plurality of pin, the pin sets up in the bottom of wire winding seat, and the pin respectively has the spacing portion of a first spacing portion and a second, and just the spacing portion of first spacing portion and second links to each other, and the first spacing portion rather than the spacing portion of second of belonging to is one and embraces the form in the projection direction. Its advantages are convenient winding, meeting the requirement of miniaturization, and high safety of electric elements.

Description

transformer

technical field

The utility model relates to a transformer, in particular to a transformer which can be conveniently wound, meets the requirement of miniaturization, and reaches the safety standard of electrical components.

Background technique

With the rapid development of science and technology, the application of electronic related products is becoming more and more extensive, and the stability of power supply often depends on the process of transformer converting the driving voltage in the electronic circuit. Since the transformer involves the conversion and processing of electric power, it is potentially dangerous, so it must comply with safety regulations before it can be used.

Please refer to FIG. 1 , which is a schematic diagram of an existing transformer. In the existing transformer 1, the winding wire 14 is wound on the pin 12, and then the winding wire 14 is fixed on the pin 12 by welding. However, this kind of processing method often causes many problems. For example, when the diameter of the winding wire 14 is relatively thick, it takes a lot of labor to wind it, and the winding wire 14 after winding is still easy to slip, which is not conducive to the subsequent welding. Furthermore, because the winding wire 14 has no fixed winding shape when it is wound on the pins 12, it will cause irregular shapes, making it difficult to control the safe distance between the two pins 12, and it is easy for the user to use it. Dangerous. Moreover, when the transformer 1 is installed on the circuit board, the pins 12 are likely to contact with other electronic components to cause a short circuit, so there are many unpredictable risks in actual use.

In view of this, how to provide a transformer that can effectively reduce the size of pins, maintain a sufficient safety distance and be easy to process is one of the important issues.

Utility model content

The purpose of the utility model is to provide a transformer, which can be conveniently wound, meets the requirement of miniaturization, and meets the safety standard of electrical components.

The purpose of this utility model is achieved by proposing a transformer, including a winding base and a plurality of pins, the pins are arranged at the bottom of the winding base, and each pin has a first limiting part With a second limiting part, the first limiting part is connected with the second limiting part, and the first limiting part and the second limiting part to which it belongs are embracing in the projection direction.

As in the above-mentioned transformer, the pins further have a connecting portion, and the connecting portion connects the first limiting portion with the second limiting portion, and each second limiting portion is disposed at the end of the corresponding pin. Each of the first limiting part and the second limiting part has a protruding part, and each of them draws a plurality of winding wires to the pins, and each winding is arranged between the first limiting part and the second limiting part. Each of the first limiting parts has an opening, and each of the second limiting parts has an opening. In addition, the openings of each first limiting portion and each second limiting portion have different openings, and each winding is accommodated in the openings of the first limiting portion and the second limiting portion at the same time, and the pin and a circuit The boards are connected, and the winding group is a secondary winding, and is an enameled wire or a multilayer insulated wire. In addition, the first limiting part and its second limiting part have the same shape, and the first limiting part and the second limiting part are semicircular, circular, spiral or other shapes, and the winding seat has A through hole is assembled with an iron core group of the transformer, so that the iron core group partly passes through the through hole. The iron core group is an EE type iron core or an EI type iron core, and the transformer is a horizontal transformer.

The advantage of the present invention is that, since the winding wire is arranged between the first limiting portion and the second limiting portion, the pins formed after welding have similar sizes and shapes. Therefore, when the pins are soldered to the circuit board for connection, it is not easy to produce variation, the consistency of the transformer is good, and it is easier to meet the requirements of safety standards in the market. In this way, the application to horizontal transformers is conducive to the miniaturization design required in the current market, and the products are more competitive.

In order to make the above and other purposes, features, and advantages of the present utility model more obvious and understandable, a preferred embodiment is specifically cited below, together with the accompanying drawings, as follows:

Description of drawings

Fig. 1 is the schematic diagram of existing transformer;

Fig. 2A is the transformer schematic diagram of the present utility model;

FIG. 2B is a schematic cross-sectional view of the winding seat of FIG. 2A;

FIG. 3A is a three-dimensional schematic diagram of the pins in FIG. 2A;

FIG. 3B is a top view of the pin shown in FIG. 3A .

Description of main component symbols

1, 2: Transformer 12, 22: Pin

14: Winding 2: Transformer

21: Winding seat 211: Through hole

221: The first limit part 222: The second limit part

223: Connecting part 224a, 224b: Protruding part

225a, 225b: opening 23: core group

24: Winding group 241: Winding

Detailed ways

Please refer to FIG. 2A and FIG. 2B at the same time. FIG. 2A is a schematic diagram of the transformer of the present invention, and FIG. 2B is a schematic cross-sectional diagram of the winding seat in FIG. 2A . The transformer 2 of the present invention includes a winding base 21 , a winding group 24 , an iron core group 23 and a plurality of pins 22 . The winding base 21 has a through hole 211 so that the core set 23 , such as an EE core or an EI core, can partially pass through the through hole 211 . The winding group 24 is composed of a plurality of winding wires, such as enameled wire or multi-layer insulated wire. The pins 22 are disposed at the bottom of the winding seat.

Please refer to FIG. 3A and FIG. 3B at the same time. FIG. 3A is a perspective view of the pins in FIG. 2A , and FIG. 3B is a top view of the pins in FIG. 3A . The pin 22 has a first limiting portion 221, a second limiting portion 222 and a connecting portion 223, the first limiting portion 221 and the second limiting portion 222 each have an opening 225a, 225b, and the first limiting portion The opening 225a of the position portion 221 and the opening 225b of the second limiting portion 222 have different directions from each other. Viewed from the projection direction, the first limiting portion 221 and the second limiting portion 222 are mutually embracing, so as to facilitate the subsequent manufacturing process. For winding and fixing purposes. In addition, the connecting portion 223 is located between the first limiting portion 221 and the second limiting portion 222, and is used for connecting the first and second limiting portions 221, 222, and the second limiting portion 222 is arranged on its corresponding end of pin 22.

In order to improve the problem that the winding wire pulled out during the processing of the existing transformer is not conducive to fixing, making the pins too large, resulting in poor product safety and consistency, the transformer 2 of the present utility model, due to the first limiting part 221 and the second limiting portion 222 have openings 225a, 225b at the edges, and are designed to embrace the shape in the projection direction, so the winding group 24, such as the winding 241 pulled out by the secondary winding, can be sequentially drawn from the secondary winding. The opening 225 a of the first limiting part 221 , the connecting part 223 and the opening 225 b of the second limiting part 222 enter into the pin 22 , as shown in FIG. 2A . Since the winding wire 241 is restricted by the first and second limiting portions 221 , 222 without irregular bending, the winding wire 241 can be neatly fixed in the pin 22 . After that, the gaps between the winding wire 241 and the first limiting portion 221 , the second limiting portion 222 and the connecting portion 223 are filled by soldering to form pins 22 with similar sizes and shapes. In this way, the shapes of the pins 22 are consistent, and when the transformer 2 is connected to a circuit board, there is no fear of short circuit caused by contact with adjacent electronic components, which can effectively improve the reliability of the product.

In addition, if miniaturization is considered, after the wire winding 241 is fixed by soldering, the second clamping portion 222 at the end of the pin 22 can be cut off, or the second clamping portion 222 and the second clamping portion 222 at the end of the pin 22 can be cut off. Part of the length of the connecting portion 223 is used to connect the connecting portion 223 to the circuit board. In this way, it is more conducive to the miniaturization design of the product.

Furthermore, if the convenience of installation is considered, it is preferable to design a protruding part 224a, 224b at the openings 225a, 225b of the first limiting part 221 and the second limiting part 222, and only The winding 241 needs to be leaned against the protruding parts 224a, 224b, and introduced into the first limiting part 221 and the second limiting part 222 along the edges of the protruding parts 224a, 224b to complete the assembly, as shown in Figure 2A and Figure 3B Show. In this way, not only the winding wire 241 can be easily fixed on the pin 22, which is beneficial to the subsequent process, but also avoids the wire winding caused by the sharp edges of the first limiting portion 221 and the second limiting portion 222. 241 scratches.

In addition, the first limiting portion 221 and the second limiting portion 222 may have the same shape as each other, and the shapes of the first limiting portion 221 and the second limiting portion 222 may be semicircular, circular, or spiral. However, the actual shape change depends on the product and the application situation. No matter how the shape changes, the effect of positioning the winding 241 can be achieved.

To sum up, since the winding is disposed between the first limiting portion and the second limiting portion, the pins formed after welding have similar sizes and shapes. Therefore, when the pins are soldered to the circuit board for connection, it is not easy to produce variation, the consistency of the transformer is good, and it is easier to meet the requirements of safety regulations in the market. In this way, the application to horizontal transformers is conducive to the miniaturization design required in the current market, and the products are more competitive.

Claims (16)

1. A transformer, characterized in that it comprises: a winding base; and at least one pin, which is arranged at the bottom end of the winding base, and the pin has a first limiting part and a second limiting part; wherein , the first limiting portion is connected to the second limiting portion, and the first limiting portion and the second limiting portion to which it belongs are in an embracing shape in a projection direction. 2. The transformer according to claim 1, wherein the pin further has a connecting portion, and the connecting portion connects the first limiting portion to the second limiting portion. 3. The transformer as claimed in claim 1, wherein the second limiting part is disposed at the end of the pin to which it belongs. 4. The transformer according to claim 1, wherein each of the first limiting portion and the second limiting portion has a protruding portion. 5. The transformer as claimed in claim 1, further comprising a winding group, the end of which is wound on the pin. 6. The transformer according to claim 5, wherein the winding wire is arranged between the first limiting portion and the second limiting portion. 7. The transformer according to claim 6, wherein the first limiting portion has an opening, and the second limiting portion has an opening, and the first limiting portion and the second limiting portion The orientations of the openings are different from each other. 8. The transformer according to claim 7, characterized in that, the ends of the winding wires are accommodated in the openings of the first limiting part and the second limiting part at the same time. 9. The transformer as claimed in claim 5, wherein the pin is connected to a circuit board. 10. The transformer according to claim 5, wherein the winding group is a primary winding, and the winding group is enameled wire or multi-layer insulated wire. 11. The transformer according to claim 1, wherein the first limiting portion has the same shape as the corresponding second limiting portion. 12. The transformer according to claim 1, characterized in that, the first limiting portion and the second limiting portion are semicircular, circular, spiral or other shapes. 13. The transformer as claimed in claim 1, characterized in that, the winding base has a through hole. 14. The transformer according to claim 13, characterized in that, the transformer also has an iron core group, and the iron core group is partially pierced in the through hole, and the iron core group is an EE type iron core or an EI type iron core. 15. The transformer according to claim 1, characterized in that the transformer is a horizontal transformer. 16. A winding seat, characterized in that at least one pin is provided at the bottom end of the winding seat, and the pin has at least one limiting portion.

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