TW202008399A - Integrated coil structure - Google Patents

Abstract

The invention discloses an integrated coil structure which comprises a magnetic core body, a first coil and a second coil; the magnetic core body is provided with a first winding portion and a secondwinding portion, a first flange and a second flange are arranged on the two sides of the magnetic core body, and a third flange is arranged on the magnetic core body between the first flange and the second flange, a first end electrode and a second end electrode are arranged on the bottom surface of the first flange, a third end electrode and a fourth end electrode are arranged on the bottom surface of the second flange, a fifth end electrode and a sixth end electrode are arranged on the bottom surface of the third flange; the first coil is wound on the first winding portion and the second winding portion, the second coil is electrically connected to the first end electrode, the fifth end electrode and the third end electrode; and the second coil is wound on the first winding portion and the second winding portion, and the second coil is electrically connected to the second end electrode, the sixth end electrode and the fourth end electrode; and the second coil and the first coil are arranged in an overlapping mode. The manufacturing process of the integrated coil structure is time-saving and labor-saving, the manufacturing cost is low and the performance is stable.

Description

Integrated coil structure

The invention is a coil structure, especially an integrated coil structure.

The common network transformer (lan-transformer), or Ethernet Transformer, is used for signal processing or noise filtering. It is usually placed between the Ethernet chip and the (RJ45) connector, which is mainly used to isolate the chip And connectors to improve the quality and speed of data signal transmission, thereby providing distortion-free signal transmission, or suppression of radiated emissions. Of course, the network transformer can also be divided into inductive or capacitive network transformers.

In the network transformer, the main structure disclosed may include a common mode filter (common mode choke), a transformer (or auto transformer), an inductor and a capacitor (or coupling capacitor), and the coil type as described above Among the components, such as common mode filters and inductors (or transformers), they are usually set as separate components/components (that is, two-piece type) and are electrically connected on the substrate or circuit board. Therefore, when the common mode filter and inductor (or transformer) in the network transformer are two-piece components, not only is it time-consuming in the manufacturing process (such as twice the time required to manufacture the magnetic core and winding) And, the two-piece component has the problem of high material cost.

Therefore, how to improve the problems discussed above is the technical difficulty for the applicant in this case.

In view of the practice, the present invention aims to solve and improve the problems and defects in the practice.

In order to achieve the above objective, the present invention provides an integrated coil structure, which includes: a magnetic core body having a first winding portion and a second winding portion, and two of the magnetic core body A first flange and a second flange are respectively provided on the side, a third flange is provided on the core body between the first flange and the second flange, and a bottom surface of the first flange is provided with a A first terminal electrode and a second terminal electrode, a third terminal electrode and a fourth terminal electrode are provided on the bottom surface of the second flange, and a fifth terminal electrode and a first terminal electrode are provided on the bottom surface of the third flange A six-terminal electrode; a first coil is wound around and fixed on the first winding part and the second winding part, and the first coil is electrically connected to the first terminal electrode, the fifth terminal electrode and On the third terminal electrode; a second coil is wound around and fixed on the first winding part and the second winding part, and the second coil is electrically connected to the second end electrode and the sixth end respectively On the electrode and the fourth terminal electrode, and the second coil and the first coil are stacked.

Preferably, the first coil is configured as a first-stage winding and a second-stage winding, and both ends of the first-stage winding are electrically connected to the first terminal electrode and the fifth terminal electrode, respectively On the two ends of the second winding are electrically connected to the fifth terminal electrode and the third terminal electrode, the second coil is set as a third winding and a fourth winding, the The two ends of the third segment winding are electrically connected to the second terminal electrode and the sixth terminal electrode, respectively, and the two ends of the fourth segment winding are electrically connected to the sixth terminal electrode and the fourth end, respectively On the electrode.

Preferably, the winding of the first coil between the first terminal electrode and the fifth terminal electrode and the winding of the second coil between the second terminal electrode and the sixth terminal electrode are both forward Winding structure setting.

Preferably, the winding of the first coil between the first terminal electrode and the fifth terminal electrode and the winding of the second coil between the second terminal electrode and the sixth terminal electrode are mutually opposite Winding structure setting.

Preferably, both the first terminal electrode and the second terminal electrode are arranged as a seventh terminal electrode, and the seventh terminal electrode is arranged on the bottom surface of the first flange.

Therefore, the invention can achieve the combination of two components into one, which can save the time of manufacturing the magnetic core (iron core) and the time of winding in the manufacturing process, and reduce the material cost, and can further increase the sense value to make the component Stable characteristics.

〔this invention〕

1‧‧‧Core body

11‧‧‧ First winding department

12‧‧‧Second winding department

13‧‧‧First flange

14‧‧‧Second flange

15‧‧‧third flange

2‧‧‧First electrode

3‧‧‧Second terminal electrode

4‧‧‧The third terminal electrode

5‧‧‧The fourth electrode

6‧‧‧ fifth electrode

7‧‧‧Sixth terminal electrode

8‧‧‧ First coil

81‧‧‧The first winding

82‧‧‧The second winding

9‧‧‧second coil

91‧‧‧The third winding

92‧‧‧The fourth winding

100‧‧‧The seventh terminal electrode

The first figure is a schematic diagram of the structure (bottom view) of the integrated coil structure (the winding of the first coil and the winding of the second coil are both arranged in a forward winding structure) according to a preferred embodiment of the present invention.

The second figure is a schematic diagram of the structure (side view) of the integrated coil structure (the winding of the first coil and the winding of the second coil are both arranged in a forward winding structure) according to a preferred embodiment of the present invention.

The third figure is the integrated coil structure of the preferred embodiment of the present invention, wherein the first coil is set as the first segment winding, the second segment winding and the second coil is set as the third segment winding, the fourth segment winding Schematic diagram of the structure (look up).

The fourth figure is the integrated coil structure of the preferred embodiment of the present invention. The winding of the first coil and the winding of the second coil are only between the first terminal electrode and the fifth terminal electrode and the second terminal electrode and the sixth A schematic diagram of the structure (looking upward) of the structure in which the end electrodes are reversely wound with each other.

The fifth figure is a schematic diagram of a structure (bottom view) in which both the first terminal electrode and the second terminal electrode are arranged as a seventh terminal electrode according to the preferred embodiment of the present invention.

In order for your reviewing committee to clearly understand the content of the present invention, the following embodiments are illustrated with drawings and symbols, so please refer to it.

Please refer to the first to fifth figures, the present invention provides an integrated coil structure, please refer to the first and second figures, which includes: a magnetic core body 1, a first coil 8 and a second Coil 9.

Wherein, the magnetic core body 1 has a first winding portion 11 and a second winding portion 12, and a first flange (frame or frame) 13 and a first Two flanges 14, a third flange 15 is provided on the core body 1 between the first flange 13 and the second flange 14, and a first end electrode 2 is provided on the bottom surface of the first flange 13 And a second terminal electrode 3, a third terminal electrode 4 and a fourth terminal electrode 5 are provided on the bottom surface of the second flange 14, and a fifth terminal electrode 6 and a fifth terminal electrode 6 are provided on the bottom surface of the third flange 15一 sixth terminal electrode 7. The bottom surface of the flange is to mount each terminal electrode on the surface of the substrate or circuit board by using surface-mount technology (SMT).

The first coil 8 is wound around and fixed on the first winding portion 11 and the second winding portion 12, and the first coil 8 is electrically connected (soldered) to the first terminal electrode 2, the fifth The terminal electrode 6 and the third terminal electrode 4 (that is, the three terminals distributed on the first coil 8 are electrically connected to the foregoing terminal electrodes). In addition, the second coil 9 is wound and fixed on the first winding portion 11 and the second winding portion 12 in the same way, and the second coil 9 is electrically connected (welded) to the second terminal electrode 3 respectively , The sixth terminal electrode 7 and the fourth terminal electrode 5 (that is, each of the three points distributed on the second coil 9 is electrically connected to the aforementioned terminal electrodes), and the second coil 9 and the first coil 8 are stacked and arranged . Thereby, an inductor is formed between the first terminal electrode 2, the second terminal electrode 3, the fifth terminal electrode 6 and the sixth terminal electrode 7, and the fifth terminal electrode 6 and the sixth terminal electrode 7 and the third terminal electrode 4 A common mode filter is formed between the fourth terminal electrode 5 and the two to form a common element. In addition, the first coil 8 and the second coil 9 can be stacked one after another in any order. Taking the first picture as an example, one end of the first coil 8 can be welded by the first end electrode 2 and then wound around the first On the winding part 11, and the second end of the first coil 8 is welded to the fifth terminal electrode 6, and the first coil 8 is wound on the second winding part 12 in sequence, and finally the first coil 8 The third terminal is welded to the third terminal electrode 4. In the same way, after one end of the second coil 9 can be welded and fixed by the second terminal electrode 3, it is wound on the first winding portion 11 and is simultaneously stacked on the first coil 8, so that the second end of the second coil 9 is welded It is fixed on the sixth terminal electrode 7, and the second coil 9 is wound on the second winding portion 12 and stacked on the first coil 8 at the same time, and finally the third end of the second coil 9 is welded and fixed On the fourth terminal electrode 5. Of course, the winding direction and order of the first coil 8 and the second coil 9 are not limited thereto.

Therefore, the invention can achieve that the two components are merged into one, which can save the manufacturing time of the magnetic core (iron core) and the winding time in the manufacturing process, thus reducing the volume and reducing the material cost, and increasing the two components Magnetic coupling (integral molding) can further increase the inductance value and stabilize the characteristics of the device of the present invention.

In this embodiment, the winding of the first coil 8 between the first terminal electrode 2, the fifth terminal electrode 6 and the third terminal electrode 4 and the second terminal electrode 3, the sixth terminal electrode 7 and the fourth The windings of the second coil 9 between the terminal electrodes 5 are all arranged in a forward winding structure. Preferably, only the winding of the first coil 8 between the first terminal electrode 2 and the fifth terminal electrode 6 and the second coil between the second terminal electrode 3 and the sixth terminal electrode 7 The winding of 9 is a forward winding structure, and the remaining windings are not limited. In addition, preferably, as shown in the fourth figure, the winding of the first coil 8 between the first terminal electrode 2 and the fifth terminal electrode 6 and the second terminal electrode 3 and the sixth terminal electrode The windings of the second coil 9 between 7 are arranged in a mutually reverse winding configuration.

Preferably, please continue to refer to the third figure, in which the first coil 8 can be set as a first winding 81 and a second winding 82, the two ends of the first winding 81 are respectively It is electrically connected (welded) to the first terminal electrode 2 and the fifth terminal electrode 6, and the two ends of the second winding 82 are electrically connected (welded) to the fifth terminal electrode 6 and On the third terminal electrode 4, the second coil 9 can be set as a third-stage winding 91 and a fourth-stage winding 92, and the two ends of the third-stage winding 91 are electrically connected (welded) ) On the second terminal electrode 3 and the sixth terminal electrode 7, the two ends of the fourth winding 92 are electrically connected (welded) to the sixth terminal electrode 7 and the fourth terminal electrode 5, respectively. In this way, the present invention improves the flexibility in the manufacturing process, and can also save the time for manufacturing the magnetic core (iron core) and the time for winding.

Preferably, please refer to the fifth figure again, wherein both the first terminal electrode 2 and the second terminal electrode 3 are replaced with a seventh terminal electrode 100, and the seventh terminal electrode 100 is disposed on the first On the bottom surface of the flange 13, each end of the first coil 8 and the second coil 9 on the same side is electrically short-circuited, thereby forming an inductance between the seventh terminal electrode 100, the fifth terminal electrode 6 and the sixth terminal electrode 7 The arrangement of the seventh terminal electrode 100 enables the present invention to cooperate with the electrical contacts mounted on a specific substrate or circuit board by surface adhesion, thereby increasing the flexibility of the manufacturing process.

The above discussion is only a preferred embodiment of the present invention, and is not intended to limit the scope of the implementation of the present invention; therefore, without departing from the spirit and scope of the present invention, equivalent shapes, configurations, or combinations of changes are made It should be covered by the scope of patent application of the present invention.

1‧‧‧Core body

11‧‧‧ First winding department

12‧‧‧Second winding department

13‧‧‧First flange

14‧‧‧Second flange

15‧‧‧third flange

2‧‧‧First electrode

3‧‧‧Second terminal electrode

4‧‧‧The third terminal electrode

5‧‧‧The fourth electrode

6‧‧‧ fifth electrode

7‧‧‧Sixth terminal electrode

8‧‧‧ First coil

9‧‧‧second coil

Claims (5)

An integrated coil structure includes: a magnetic core body having a first winding portion and a second winding portion, and a first flange and a flange are respectively provided on both sides of the magnetic core body A second flange, a third flange is provided on the core body between the first flange and the second flange, and a first end electrode and a second end are provided on the bottom surface of the first flange Electrodes, a third terminal electrode and a fourth terminal electrode are provided on the bottom surface of the second flange, and a fifth terminal electrode and a sixth terminal electrode are provided on the bottom surface of the third flange; a first coil, It is wound and fixed on the first winding part and the second winding part, and the first coil is electrically connected to the first end electrode, the fifth end electrode and the third end electrode respectively; a second The coil is wound around and fixed on the first winding part and the second winding part, and the second coil is electrically connected to the second end electrode, the sixth end electrode and the fourth end electrode, respectively, and The second coil and the first coil are stacked. The integrated coil structure as described in item 1 of the patent application scope, wherein the first coil is configured as a first-stage winding and a second-stage winding, and both ends of the first-stage winding are electrically connected respectively On the first end electrode and the fifth end electrode, the two ends of the second winding are electrically connected to the fifth end electrode and the third end electrode respectively, and the second coil is set as a third section A winding and a fourth winding, two ends of the third winding are electrically connected to the second terminal electrode and the sixth terminal electrode, respectively, and two ends of the fourth winding are electrically connected respectively It is provided on the sixth terminal electrode and the fourth terminal electrode. The integrated coil structure as described in item 1 of the patent application scope, wherein the winding of the first coil between the first terminal electrode and the fifth terminal electrode and between the second terminal electrode and the sixth terminal electrode The winding of the second coil is arranged in a forward winding structure. The integrated coil structure as described in item 1 of the patent application scope, wherein the winding of the first coil between the first terminal electrode and the fifth terminal electrode and between the second terminal electrode and the sixth terminal electrode The windings of the second coil are reversely wound with each other. The integrated coil structure as described in item 1 of the patent application scope, wherein both the first end electrode and the second end electrode are provided as a seventh end electrode, and the seventh end electrode is provided on the bottom surface of the first flange on.

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