Flat coupled inductor

Abstract

A flat coupling inductor includes a core, a first coil and a second coil. The core has a first opening and a second opening, and includes a first core body and a second core body. The first coil includes a first arch-shaped body, a first pin, a second pin and a third pin, the first arch-shaped body has a first accommodating space, and the first pin passes through the first opening. The second pin and the third pin pass through the second opening. The second coil includes a second arch-shaped body and two inner pins, the second arch-shaped body is located in the first accommodating space, each inner pin is connected to the second arch-shaped body respectively, and passes through the second opening, and each inner pin is located between the second pin and the third pin. Therefore, the flat coupling inductor can achieve high voltage resistance and high power density technical effects.

Description

Technical Field

[0001] This utility model relates to an inductor structure, and more particularly to a flat coupled inductor. Background Technology

[0002] Inductors have functions such as filtering noise, suppressing instantaneous current, reducing EMI, and power conversion. Inductors have a wide range of applications, including transformers, energy storage, sensors, induction motors, filters, and electromagnetic relays in the field of electronic technology.

[0003] In the existing technology, the overall height of inductors is high, which limits their application range. In order to meet people's needs, inductor components need to have the characteristics of high voltage resistance and high power density.

[0004] Therefore, how to overcome the above-mentioned defects through structural design improvements has become one of the important issues to be addressed in this field. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a flat coupled inductor to address the shortcomings of the prior art.

[0006] To solve the aforementioned technical problems, one technical solution adopted by this utility model is to provide a flat coupled inductor, which includes an iron core, a first coil, and a second coil. The iron core has a first opening and a second opening on opposite sides, and the iron core includes a first iron core body and a second iron core body. The second iron core body is coupled to the first iron core body, and there is an accommodating space between the first and second iron core bodies, which is connected to the first opening and the second opening respectively. The first coil includes a first arch-shaped body, a first pin, a second pin, and a third pin. The first arch-shaped body has a first accommodating space and is located within the accommodating space. The first pin is connected to the first arch-shaped body and extends through the first opening in a direction away from the first iron core body. The second pin and the third pin are respectively connected to the first arch-shaped body and extend through the second opening in a direction away from the first iron core body. The second coil includes a second arch-shaped body and two inner pins. The second arch-shaped body has a second receiving space. The second arch-shaped body is located in the first receiving space and has a gap with the first arch-shaped body. Each inner pin is connected to the second arch-shaped body, passes through the second opening, and extends in a direction away from the first iron core. Each inner pin is located between the second pin and the third pin.

[0007] According to a feasible embodiment, the first arch-shaped body of the flat coupled inductor includes two side arm segments and a connecting segment, with the two ends of the connecting segment respectively connected to the side wall segment, and the first pin connected to the center of the connecting segment.

[0008] According to a feasible embodiment, the first, second, and third pins and two inner pins of the flat coupled inductor extend in the same direction.

[0009] According to one feasible embodiment, at least one of the first pin, second pin, third pin and two inner pins of the flat coupled inductor extends in one direction, and at least one of the other pins extends in another direction.

[0010] According to one feasible embodiment, each inner pin of the flat coupled inductor includes an extension and a solder pad, the solder pad being connected to the extension and located below the second core, with a gap between them.

[0011] According to a feasible embodiment, the flat coupled inductor has two second openings, with each inner pin protruding from each second opening.

[0012] According to one feasible embodiment, the second pin of the flat coupled inductor forms a notch with the corresponding inner pin; the third pin forms another notch with the corresponding inner pin.

[0013] According to a feasible embodiment, the first core of the flat coupled inductor includes a first plate and a bump. The two sides of the first plate are defined as a first side and a second side corresponding to a first opening and a second opening, respectively. The bump is connected to a surface of the first plate facing the second core and is located within a second receiving space.

[0014] According to a feasible embodiment, the first core of the flat coupled inductor further includes two wall posts, which are respectively connected to the surface and extend from the first opening toward the second opening, respectively located on both sides of the protrusion, with one end of each wall post flush with the first side of the first plate.

[0015] According to one feasible embodiment, the second core of the flat coupled inductor includes a second plate, one side of which has an opening that is part of the first opening, and the other side of which has a protrusion located between two inner pins.

[0016] One of the beneficial effects of this utility model is that the flat coupled inductor Z provided by this utility model can reduce the inductance height through the following technical solutions: "the first coil includes a first arch-shaped body, a first pin, a second pin, and a third pin"; "the first arch-shaped body has a first receiving space, the first arch-shaped body is located in the receiving space, the first pin is connected to the first arch-shaped body and extends out of the first opening in a direction away from the first iron core; the second pin and the third pin are respectively connected to the first arch-shaped body and extend out of the second opening in a direction away from the first iron core"; "the second coil includes a second arch-shaped body and two inner pins, the second arch-shaped body has a second receiving space, the second arch-shaped body is located in the first receiving space, each inner pin is respectively connected to the second arch-shaped body, extends out of the second opening in a direction away from the first iron core"; and "the two inner pins are located between the second pin and the third pin". This achieves the technical effect of high withstand voltage and high power density by reducing the inductance height.

[0017] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a flat coupled inductor according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the embodiment shown.

[0020] Figure 3 for Figure 1 A three-dimensional schematic diagram of the embodiment shown.

[0021] Figure 4 for Figure 1 An exploded view of the embodiment shown.

[0022] Figure 5 for Figure 1 An exploded view of the embodiment shown.

[0023] Figure 6 for Figure 1 The top view of the embodiment shown omits the first iron core.

[0024] Figure 7 for Figure 1 The bottom view of the embodiment shown omits the second iron core. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of the "flat coupled inductor" disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0026] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components, these components should not be limited by these terms. These terms are primarily used to distinguish one component from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more related listed items.

[0027] Please see Figures 1 to 7 , Figure 1 This is a three-dimensional schematic diagram of a flat coupled inductor Z according to an embodiment of the present invention. Figure 2 for Figure 1 A three-dimensional schematic diagram of the embodiment shown. Figure 3 for Figure 1 A three-dimensional schematic diagram of the embodiment shown. Figure 4 for Figure 1 An exploded view of the embodiment shown. Figure 5 for Figure 1 An exploded view of the embodiment shown. Figure 6 for Figure 1 The top view of the embodiment shown omits the first iron core 11. Figure 7 for Figure 1 The bottom view of the embodiment shown omits the second iron core 12.

[0028] The flat coupled inductor Z includes a core 1, a first coil 2, and a second coil 3. The core 1 has a first opening 1a and a second opening 1b on opposite sides. The core 1 includes a first core body 11 and a second core body 12. The second core body 12 is coupled to the first core body 11, and a receiving space S exists between the first core body 11 and the second core body 12. The receiving space S is connected to the first opening 1a and the second opening 1b, respectively. The first coil 2 includes a first arch-shaped body 20, a first pin 21, a second pin 22, and a third pin 23. The first arch-shaped body 20 has a first receiving space S1, located within the receiving space S. The first pin 21 is connected to the first arch-shaped body 20 and extends through the first opening 1a in a direction away from the first core body 11. The second pin 22 and the third pin 23 are respectively connected to the first arch-shaped body 20 and extend through the second opening 1b in a direction away from the first core body 11. The second coil 3 includes a second arch-shaped body 31 and two inner pins 32. The second arch-shaped body 31 has a second receiving space S2. The second arch-shaped body 31 is located within the first receiving space S1 and has a gap with the first arch-shaped body 20. Each inner pin 32 is connected to the second arch-shaped body 31, extends through the second opening 1b, and extends in a direction away from the first iron core 11. Each inner pin 32 is located between the second pin 22 and the third pin 23. In this embodiment, the first pin 21, the second pin 22, and the third pin 23 also protrude from the bottom surface 122 of the second iron core 12.

[0029] The aforementioned arch shape can be either "U"-shaped or "C"-shaped. According to some embodiments, the arch shape is "Ω"-shaped. According to some embodiments, the first core body 11 and the second core body 12 (core component 1) can be made of ferrite or soft magnetic materials. According to some embodiments, the first coil 2 and the second coil 3 can be flat coils, but are not limited thereto; the first coil 2 and the second coil 3 can also be made of stamped copper sheets or other conductive materials. The first coil 2 and the second coil 3 are insulated from each other; for example, they do not have physical contact (e.g., there is a gap G1 between the first arch-shaped body 20 and the second arch-shaped body 31, see...). Figure 6 and Figure 7 The gap G1 is a U-shaped channel. By setting gap G1 and other gaps (see the description below), the effect of ultra-high withstand voltage can be achieved. The size of gap G1 can be flexibly adjusted by the manufacturer or user according to actual needs. By changing the size of gap G1, the inductance of the first inductance generated by the first coil 2 and the second inductance generated by the second coil 3 can be controlled.

[0030] like Figure 4 and Figure 5As shown, the first arch-shaped body 20 of the flat coupled inductor Z includes two side arm segments 201 and a connecting segment 202. The two ends of the connecting segment 202 are respectively connected to the side arm segments 201, and the first pin 21 is connected to the center of the connecting segment 202.

[0031] like Figures 2 to 5 As shown, each inner lead 32 of the flat coupled inductor Z includes an extension 321 and a pad 322, the pad 322 being connected to the extension 321 and located below the second core body 12. This structure facilitates the flattening design of the flat coupled inductor Z, reducing its overall height. According to some embodiments, the vertical height of the flat coupled inductor Z is 3-6 millimeters (mm). Figure 2 In the embodiment shown, there is a gap G2 between the pad 322 of the flat coupled inductor Z and the second core 12.

[0032] exist Figure 1 In the illustrated embodiment, the first pin 21, second pin 22, third pin 23, and two inner pins 32 of the flat coupled inductor Z extend in the same direction. However, the present invention is not limited thereto. According to other embodiments, at least one of the first pin 21, second pin 22, third pin 23, and two inner pins 32 extends in one direction, and at least one of the other pins extends in another direction. At least one of the pins may extend in different directions. For example, the first pin 21, second pin 22, and third pin 23 may extend downwards (towards the second core 12), and the two inner pins 32 may extend upwards (towards the first core 11). In other embodiments, the first pin 21, second pin 22, and third pin 23 may extend upwards (towards the first core 11), and the two inner pins 32 may extend downwards (towards the second core 12). The present invention is not limited thereto, and the extension direction of the pins can be adjusted according to the user's needs. According to some embodiments, the extension length of the pins (first pin 21, second pin 22, third pin 23 and two inner pins 32) is increased, so that multiple devices can be placed under the core component 1, thereby increasing the power density of the inductor.

[0033] According to some embodiments, there is one second opening 1b, through which the second pin 22, the third pin 23, and the two inner pins 32 protrude. And... Figure 3 In the illustrated embodiment, there are two second openings 1b. The second pin 22 protrudes through one second opening 1b, and the third pin 23 protrudes through the other second opening 1b. Two inner pins 32 protrude from the second openings 1b respectively, and the two inner pins 32 are located between the second pin 22 and the third pin 23. The second pin 22 and its corresponding inner pin 32 form a notch O. The third pin 23 and its corresponding inner pin 32 form another notch O.

[0034] Further explanation of the structure of the first core 11 of the flat coupled inductor Z, such as... Figure 5 As shown, the first core 11 includes a first plate 111 and a protrusion 112. The two sides of the first plate 111 are defined as first side surface 111a and second side surface 111b, corresponding to the first opening 1a and the second opening 1b, respectively. The protrusion 112 is connected to the surface of the first plate 111 facing the second core 12 and is located within the second accommodating space S2. In this embodiment, the first core 11 of the flat coupled inductor Z also includes two wall posts 113, respectively connected to the surface of the first plate 111, extending from the first opening 1a towards the second opening 1b, and located on both sides of the protrusion 112. One end of each wall post 113 is flush with the first side surface 111a of the first plate 111. The other end of the wall post 113 does not extend to the second side surface 111b of the first plate 111.

[0035] Further explanation of the structure of the second core 12 of the flat coupled inductor Z: the second core 12 of the flat coupled inductor Z includes a second plate 121. One side of the second plate 121 has an opening 1211, which is part of the first opening 1a. The other side of the second plate 121 has a protrusion 1212, which is located between the two inner pins 32.

[0036] One of the beneficial effects of this utility model is that the flat coupled inductor provided by this utility model can reduce the inductor height through the following technical solutions: "the first coil includes a first arch-shaped body, a first pin, a second pin, and a third pin"; "the first arch-shaped body has a first receiving space, the first arch-shaped body is located in the receiving space, the first pin is connected to the first arch-shaped body and extends out of the first opening in a direction away from the first iron core; the second pin and the third pin are respectively connected to the first arch-shaped body and extend out of the second opening in a direction away from the first iron core"; "the second coil includes a second arch-shaped body and two inner pins, the second arch-shaped body has a second receiving space, the second arch-shaped body is located in the first receiving space, each inner pin is respectively connected to the second arch-shaped body, extends out of the second opening in a direction away from the first iron core"; and "the two inner pins are located between the second pin and the third pin". This achieves the technical effect of high withstand voltage and high power density by reducing the inductor height.

[0037] Furthermore, the flat coupled inductor Z of this invention achieves a very high coupling coefficient between the two coupled inductors through a reasonable magnetic circuit design, allowing them to influence each other. Moreover, high withstand voltage is achieved through the design of the gap between the first and second coils, and the spacing between them and the first or second iron core (e.g., the spacing between the solder pad and the second iron core as described above). Based on the combination relationship of the iron core, the first coil, and the second coil of this invention, the height of the coupled inductor can be reduced, meeting application requirements.

[0038] Furthermore, according to one embodiment, by increasing the height of the pins (first pin 21, second pin 22, third pin 23 and two inner pins 32), multiple devices (such as on a circuit board) can be added below the second core. In this way, in addition to reducing the height of the inductor, it is also beneficial to increase the power density of the overall product.

[0039] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of protection of the claims of the present utility model. Therefore, all equivalent technical changes made based on the content of the present utility model specification and drawings are included in the scope of protection of the claims of the present utility model.

Claims

1. A flat coupled inductor, characterized in that, The flat coupled inductor includes: A core component, having a first opening and at least one second opening on opposite sides, the core component comprising: A first iron core body; and A second iron core body is combined with the first iron core body, and there is an accommodating space between the first iron core body and the second iron core body, the accommodating space being connected to the first opening and the second opening respectively; A first coil includes a first arch-shaped body, a first pin, a second pin, and a third pin. The first arch-shaped body has a first receiving space, and the first pin is located within the receiving space. The first pin is connected to the first arch-shaped body and extends through the first opening in a direction away from the first iron core. The second pin and the third pin are respectively connected to the first arch-shaped body and extend through the second opening in a direction away from the first iron core. A second coil includes a second arch-shaped body and two inner pins. The second arch-shaped body has a second receiving space. The second arch-shaped body is located within the first receiving space. Each of the inner pins is connected to the second arch-shaped body and extends through the second opening in a direction away from the first iron core. The two inner pins are located between the second pin and the third pin.

2. The flat coupled inductor according to claim 1, characterized in that, The first arch-shaped body includes two side arm segments and a connecting segment. The two ends of the connecting segment are respectively connected to the side arm segments, and the first pin is connected to the center of the connecting segment.

3. The flat coupled inductor according to claim 1, characterized in that, The first pin, the second pin, the third pin, and the two inner pins extend in the same direction.

4. The flat coupled inductor according to claim 1, characterized in that, At least one of the first pin, the second pin, the third pin, and the two inner pins extends in one direction, and at least one of the other pins extends in another direction.

5. The flat coupled inductor according to claim 1, characterized in that, Each of the inner pins includes an extension and a solder pad, the solder pad being connected to the extension and located below the second core body, with a gap between it and the second core body.

6. The flat coupled inductor according to claim 1, characterized in that, There are two second openings, and each of the inner pins protrudes out of each of the second openings.

7. The flat coupled inductor according to claim 1, characterized in that, The second pin forms a notch with the corresponding inner pin; the third pin forms another notch with the corresponding inner pin.

8. The flat coupled inductor according to claim 1, characterized in that, The first iron core includes a first plate and a protrusion. The two sides of the first plate define a first side and a second side corresponding to the first opening and the second opening, respectively. The protrusion is connected to a surface of the first plate facing the second iron core and is located within the second accommodating space.

9. The flat coupled inductor according to claim 8, characterized in that, The first iron core also includes two wall posts, which are respectively connected to the surface and extend from the first opening toward the second opening, respectively located on both sides of the protrusion, with one end of each wall post flush with the first side of the first plate.

10. The flat coupled inductor according to claim 7, characterized in that, The second core body includes a second plate, one side of which has an opening that is part of the first opening, and the other side of which has a protrusion located between the two inner pins.

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