An electrical component and an integrated circuit board

Abstract

The utility model discloses an electrical element and integrated circuit board, electrical element includes magnetic core, skeleton and ground assembly, and the magnetic core is provided with the accommodation cavity and the through -going orifice that communicates with the accommodation cavity, a part of skeleton sets up in the accommodation cavity, and another part extends to the outside of the accommodation cavity through the through -going orifice, and the part of skeleton is located in the outside of the accommodation cavity is equipped with the recess that extends to the side wall of magnetic core, ground assembly includes conducting bonding piece and ground pin, and one end of ground pin part of a whole is inserted into the recess and another part extends to the outside of skeleton, and conducting bonding piece is filled in the recess, and conducting bonding piece respectively with ground pin and magnetic core conductive connection. Because the skeleton is equipped with the recess, ground pin only needs part to insert into the recess, and then fills the conducting bonding piece in the recess to be used for connecting ground pin and magnetic core, need not to be wrapped copper foil outside the magnetic core, and it is more convenient to process.

Description

Technical Field

[0001] This utility model relates to the field of electronic components, and in particular to an electrical component and an integrated circuit board. Background Technology

[0002] With the continuous development of science and technology, more and more electronic products are being designed and manufactured. In switching power supplies and power electronic equipment, transformers and inductors are the core components for energy conversion and transmission. The structures of these two are quite similar, both including a magnetic core, a frame, and windings wound on the frame. The difference lies in the number of windings and the winding method. When the power supply is high, the energy radiated from the magnetic core cannot be ignored, which can lead to electromagnetic interference. To solve this problem, a common method is to wrap copper foil around the magnetic core and then connect the copper foil to a grounding pin by soldering leads. However, this grounding process is complex and not conducive to manufacturing. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides an electrical component and an integrated circuit board.

[0004] The technical problem solved by this utility model embodiment is addressed by the following technical solution: An electrical component includes a magnetic core, a frame, and a grounding assembly. The magnetic core has a receiving cavity and an opening communicating with the receiving cavity. A portion of the frame is disposed within the receiving cavity, and another portion extends out of the receiving cavity through the opening. The portion of the frame outside the receiving cavity has a groove extending to the sidewall of the magnetic core. The grounding assembly includes a conductive adhesive and a grounding pin. One end of the grounding pin extends into the groove, and the other end extends out of the frame. The conductive adhesive fills the groove and is electrically connected to both the grounding pin and the magnetic core.

[0005] In some embodiments, the portion of the skeleton located outside the receiving cavity has an opening communicating with the groove.

[0006] In some embodiments, the skeleton includes a bone base and a central column connected together, the central column being located within the receiving cavity, a portion of the bone base being disposed within the receiving cavity, and another portion of the bone base extending outside the receiving cavity through the opening, and the portion of the bone base outside the receiving cavity having the groove.

[0007] In some embodiments, the bone base includes a base portion and a first extension portion connected to each other. The base portion is connected to the central post and located within the receiving cavity. The first extension portion is located outside the receiving cavity through the opening, and the first extension portion has the groove on the side facing the magnetic core.

[0008] In some embodiments, the bone base further includes a second extension portion connected to the base portion, the second extension portion and the first extension portion being located at opposite ends of the base portion, both the first extension portion and the second extension portion protruding in a direction away from the base portion, and a first positioning groove being formed between the first extension portion, the second extension portion and the base portion.

[0009] In some embodiments, the skeleton further includes a bone top seat connected to the central column, the bone top seat and the bone base seat being located at opposite ends of the central column, and the bone top seat abutting against the magnetic core.

[0010] In some embodiments, the bone top seat includes a top seat portion and a protrusion portion connected together. The protrusion portion protrudes relative to the top seat portion in a direction away from the bone base. The top seat portion abuts against the magnetic core and is received within the receiving cavity. The protrusion portion is located outside the receiving cavity through the opening.

[0011] In some embodiments, the protrusion includes a first protrusion and a second protrusion, the first protrusion and the second protrusion being located at opposite ends of the top seat portion, and a second positioning groove being formed between the first protrusion, the second protrusion and the top seat portion.

[0012] In some embodiments, one end of the grounding pin disposed within the groove abuts against the outer wall of the magnetic core.

[0013] The technical problem solved by this utility model embodiment also adopts the following technical solution: An integrated circuit board includes the aforementioned electrical components and a board body, wherein the electrical components are mounted on the board body.

[0014] The beneficial effects of this utility model embodiment are as follows: The electrical component provided in this application embodiment includes a magnetic core, a frame, a winding, and a grounding assembly. The magnetic core is provided with a receiving cavity and a through-hole communicating with the receiving cavity. The frame includes a connected bone base and a central post. The central post is connected to the magnetic core and located within the receiving cavity. The bone base includes a connected base portion and a first extension portion. The base portion is connected to the central post and located within the receiving cavity. The first extension portion is located outside the receiving cavity through the through-hole, and a groove is provided on the side of the first extension portion facing the magnetic core. The winding is wound around the central post. The grounding assembly includes a conductive adhesive and a grounding pin. One end of the grounding pin is located outside the first extension portion, and the other end of the grounding pin passes through the first extension portion and extends into the groove. The conductive adhesive fills the groove, and the conductive adhesive is connected to the grounding pin and the magnetic core respectively. Because the frame is provided with a groove, the grounding pin only needs to partially extend into the groove. Then, by filling the groove with conductive adhesive, the grounding pin and the magnetic core are conductively connected. There is no need to wrap copper foil around the outside of the magnetic core, which is more convenient to process and helps to improve production efficiency. Attached Figure Description

[0015] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0016] Figure 1 This is a schematic diagram of the structure of an electrical component according to one embodiment of this application; Figure 2 yes Figure 1 Front view of electrical components; Figure 3 yes Figure 1 Enlarged view of the structure of section A after removing the conductive adhesive; Figure 4 This is a bottom view of the skeleton of one embodiment of this application; Figure 5 This is a side view of the skeleton of one embodiment of this application; Figure 6 yes Figure 5 Another perspective of the side view; In the diagram: 1. Electrical component; 2. Magnetic core; 3. Skeleton; 4. Winding; 5. Grounding assembly; 6. Connecting pin; 201. Receiving cavity; 202. Through port; 21. Magnetic core housing; 22. Insert post; 211. First magnetic core housing; 212. Second magnetic core housing; 31. Bone base; 32. Central post; 33. Bone top seat; 311. Base portion; 312. First extension portion; 313. Second extension portion; 301. First positioning groove; 302. Second positioning groove; 3121. Groove; 3122. Opening; 321. Insertion hole; 331. Top seat portion; 332. Protrusion; 3321. First protrusion; 3322. Second protrusion; 51. Conductive adhesive; 52. Grounding pin. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0019] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] With the continuous development of technology, more and more electronic devices are being designed and manufactured. In some power electronic devices, inductors and transformers are usually required for energy conversion and transmission. Transformers and inductors have similar structures, generally including a magnetic core, a frame, and windings wound on the frame. The difference lies in the number of windings and the winding method.

[0021] When the power supply is high, the energy radiated by the magnetic core cannot be ignored, which can lead to electromagnetic interference (EMI). One approach to address EMI is to wrap the magnetic core with copper foil and then connect the copper foil to a grounding pin via soldered leads. This method is complex and difficult to manufacture. Another approach involves drilling a hole in the magnetic core, inserting the grounding pin through the hole, and filling the hole with conductive adhesive to achieve a conductive connection between the core and the grounding pin. This method requires strict control over the size of the grounding pin and the hole in the magnetic core to prevent the portion of the grounding pin outside the core from exceeding the size of other pins used for connecting to the circuit board. This could result in the core being pushed up by the grounding pin relative to the circuit board, or the portion of the grounding pin inserted into the hole being too short, affecting the stability of the connection. Furthermore, since the magnetic core is formed by pressing magnetic material powder (such as iron oxide or barium / strontium mixture) into the required shape using a die-casting machine and then sintering it, drilling holes in the core is difficult and requires precise control, hindering the manufacturing process of grounding the magnetic core. To improve production efficiency, the inventors of this application provide another method for grounding the magnetic core, the specific solution of which is as follows: like Figure 1-3 As shown, an electrical component 1 provided in one embodiment of this application includes a magnetic core 2, a frame 3, and a grounding assembly 5. The magnetic core 2 is provided with a receiving cavity 201 and a through-hole 202 communicating with the receiving cavity 201. A portion of the frame 3 is disposed within the receiving cavity 201, and another portion extends out of the receiving cavity 201 through the through-hole 202. The portion of the frame 3 outside the receiving cavity 201 is provided with a groove 3121 extending to the sidewall of the magnetic core 2. The grounding assembly 5 includes a conductive adhesive 51 and a grounding pin 52. A portion of one end of the grounding pin 52 extends into the groove 3121, and the other portion extends out of the frame 3. The conductive adhesive 51 fills the groove 3121 and is electrically connected to the grounding pin 52 and the magnetic core 2, respectively.

[0022] Thus, since the frame 3 has a groove 3121, the grounding pin 52 only needs to partially extend into the groove 3121. Then, by filling the groove 3121 with conductive adhesive 51 to conductively connect the grounding pin 52 and the magnetic core 2, there is no need to wrap the magnetic core 2 with copper foil, making processing more convenient and improving production efficiency. Furthermore, compared to the aforementioned method of drilling a hole in the magnetic core 2, inserting the grounding pin, and then grounding via conductive adhesive, the method described in this embodiment involves less difficulty in creating the groove 3121 on the frame 3 to accommodate the conductive adhesive 51, and the grounding pin 52 does not require precise control of the size of the portion inserted into the groove 3121, making processing more convenient. It can be understood that the electrical component 1 should further include other existing component structures required to realize its functions, which will not be elaborated herein. For example, the electrical component 1 further includes a winding 4, and the winding 4 is wound around the magnetic core 2 and located in the accommodating cavity 201. The electrical component 1 may be an inductor or a transformer, with the difference lying in the structure of the winding 4. When the electrical component is an inductor or a transformer, the structure of the winding 4 of the inductor adopts the existing structure, which will not be elaborated again herein.

[0023] The shape of the magnetic core 2 can be set as required, for example, it may be E-shaped, "日"-shaped, or of course other shapes, as long as it can realize the mating connection and fixation with the bobbin 3.

[0024] As for the connection mode between the magnetic core 2 and the bobbin 3, the magnetic core 2 may be provided with a recessed hole (not shown in the figure), and the bobbin 3 is inserted into the recessed hole to realize fixation with the magnetic core 2; or the bobbin is provided with a through insertion hole, and part of the magnetic core 2 is inserted into the insertion hole; of course, other modes such as pre-embedding may also be adopted, which can be specifically set as required. The conductive adhesive member 51 may be a conductive adhesive or other conductive structures, as long as it can be filled into the groove 3121 and electrically connect the ground pin 52 and the magnetic core 2.

[0025] In some embodiments, the magnetic core 2 includes a magnetic core shell 21 and an insertion post 22 that are connected to each other, the magnetic core shell 21 is provided with an accommodating cavity 201, and the insertion post 22 is located in the accommodating cavity 201. In this embodiment, the magnetic core shell 21 includes a first magnetic core shell 211 and a second magnetic core shell 212 that are connected to each other, the first magnetic core shell 211 and the second magnetic core shell 212 jointly enclose to form the accommodating cavity 201, and one of the first magnetic core shell 211 and the second magnetic core shell 212 is provided with the insertion post 22.

[0026] In some embodiments, the first magnetic core shell 211 is E-shaped, and the second magnetic core shell 212 is "I"-shaped. In some embodiments, both the first magnetic core shell 211 and the second magnetic core shell 212 are "E"-shaped.

[0027] In some embodiments, the part of the bobbin 3 located outside the accommodating cavity 201 is provided with an opening 3122 communicating with the groove 3121, and the opening 3122 is used to expose the groove 3121 to the outside, so as to facilitate directly adding the conductive adhesive member 51 into the groove 3121 through the opening 3122 during production, and the filling state of the conductive adhesive member 51 in the groove 3121 can be observed through the opening 3122, so as to adjust the filling amount of the conductive adhesive member 51 as required.

[0028] In some embodiments, the frame 3 includes a connected bone base 31 and a central post 32. The central post 32 is connected to the magnetic core 2 and is located within the receiving cavity 201 for mounting the winding 4. A portion of the bone base 31 is disposed within the receiving cavity 201, and another portion of the bone base 31 extends outside the receiving cavity 201 through a through-hole 202. The portion of the bone base 31 outside the receiving cavity 201 has a groove 3121. This groove 3121 is located on the portion of the bone base 31 extending outside the receiving cavity 201, facilitating the machining of the groove 3121 on the bone base 31 and improving production efficiency. In this embodiment, the central post 32 has a through-hole 321 into which the insertion post 22 is inserted to achieve relative fixation between the magnetic core 2 and the frame 3.

[0029] like Figure 1 and Figure 4 As shown, in some embodiments, the bone base 31 includes a base portion 311 and a first extension portion 312 connected to each other. The base portion 311 is connected to the central post 32 and located within the receiving cavity 201. The first extension portion 312 is disposed outside the receiving cavity 201 through a through-hole 202. A groove 3121 extending to the sidewall of the magnetic core 2 is provided on the side of the first extension portion 312 facing the magnetic core 2. In this embodiment, an opening 3122 is provided on the first extension portion 312, and the groove 3121 can be exposed to the outside through the opening 3122, which facilitates the filling of conductive adhesive into the groove 3121 by production personnel through the opening 3122, thus helping to improve production efficiency.

[0030] In some embodiments, such as Figure 3 As shown, the first extension portion 312 is provided with an opening 3122 that communicates with the groove 3121. The opening 3122 is located on the side of the first extension portion 312 away from the central post 32. In this way, the groove 3121 can be exposed to the outside through the opening 3122, which makes it convenient for production personnel to fill the groove 3121 with conductive adhesive 51 through the opening 3122, thus helping to improve production efficiency.

[0031] In some embodiments, such as Figure 5 As shown, the bone base 31 also includes a second extension 313 connected to the base portion 311. The second extension 313 and the first extension 312 are located at opposite ends of the base portion 311. Both the first extension 312 and the second extension 313 protrude in a direction away from the base portion 311, i.e., as shown... Figure 5The direction is X, and a first positioning groove 301 is formed between the first extension portion 312, the second extension portion 313, and the base portion 311. Thus, the magnetic core 2 can be positioned in the mounting position between the bone base 31 via the first positioning groove 301, facilitating rapid positioning and installation. In this embodiment, the surface of the second magnetic core housing 212 facing the first magnetic core housing 211 abuts against the first positioning groove 301. Furthermore, the first extension portion 312 and the second extension portion 313 are spaced apart along the direction Y, with a distance d1 between them in the direction Y, and a dimension d2 of the second magnetic core housing 212 in the direction Y, satisfying d1≥d2, so that the second magnetic core housing 212 can be partially accommodated within the first positioning groove 301.

[0032] In some embodiments, please combine Figure 2 , Figure 5 and Figure 6 As shown, the frame 3 also includes a top seat 33 connected to the central column 32. The top seat 33 and the base seat 31 are located at opposite ends of the central column 32, and the top seat 33 abuts against the magnetic core 2. Thus, the interaction between the top seat 33 and the base seat 31 helps to support the magnetic core 2. In this embodiment, the top seat 33 includes a top seat portion 331 and a protrusion 332 connected to each other. The protrusion 332 protrudes away from the base seat 31 relative to the top seat portion 331. The top seat portion 331 abuts against the magnetic core 2 and is housed in the receiving cavity 201, while the protrusion 332 is located outside the receiving cavity 201 through the opening 202. Since the protrusion 332 protrudes relative to the top seat portion 331, it helps to create a height difference between the surfaces of the protrusion 332 and the top seat portion 331. This height difference allows for quick positioning and installation between the top seat 33 and the magnetic core 2.

[0033] In some embodiments, such as Figure 5 As shown, the protrusion 332 includes a first protrusion 3321 and a second protrusion 3322. The first protrusion 3321 and the second protrusion are located at opposite ends of the top seat 331, and a second positioning groove 302 is formed between the first protrusion 3321, the second protrusion 3322, and the top seat 331. Thus, the magnetic core 2 can be quickly positioned through the second positioning groove 302, which facilitates the assembly personnel in quickly installing the magnetic core 2 to the frame 3. In this embodiment, the first magnetic core housing 211 of the magnetic core 2 is disposed within the second positioning groove 302, and the distance between the first protrusion 3321 and the second protrusion 3322 along the Y direction is d3. The dimension of the first magnetic core housing 211 in the Y direction is d4, satisfying d3≥d4, so that the first magnetic core housing 211 can be partially accommodated within the first positioning groove 301.

[0034] In some embodiments, please refer again Figure 1The electrical component 1 also includes multiple connection pins 6, which are spaced apart on the base 31 and connected to the winding 4. Thus, in use, the winding 4 can be indirectly connected to the circuitry of the circuit board by connecting the connection pins 6 to the circuit board. In this embodiment, both the first extension portion 312 and the second extension portion 313 are provided with connection pins 6, some of which are connected to the winding 4 and some are used to connect to the circuit board. This ensures that the electrical component 1 maintains a stable connection under balanced forces when connected to the circuit board during use, reducing the risk of the connection pins 6 breaking due to unbalanced forces in a vibrating working environment.

[0035] In some embodiments, one end of the grounding pin 52 disposed within the groove 3121 abuts against the outer wall of the magnetic core 2. This allows the grounding pin 52 to be effectively electrically connected to the magnetic core 2, thereby grounding the magnetic core 2. Simultaneously, the conductive adhesive 51 fills the groove 3121, stably and reliably encapsulating the grounding pin 52, the frame 3, and the magnetic core 2 together, preventing the grounding pin 52 from loosening relative to the frame 3 and the magnetic core 2, thus ensuring the reliability and stability of the grounding.

[0036] The electrical component 1 provided in this application embodiment includes a magnetic core 2, a frame 3, and a grounding assembly 5. The magnetic core 2 is provided with a receiving cavity 201 and a through-hole 202 communicating with the receiving cavity 201. A portion of the frame 3 is disposed in the receiving cavity 201, and another portion extends out of the receiving cavity 201 through the through-hole 202. The portion of the frame 3 outside the receiving cavity 201 is provided with a groove 3121 extending to the side wall of the magnetic core 2. The grounding assembly 5 includes a conductive adhesive 51 and a grounding pin 52. One end of the grounding pin 52 is disposed in the groove 3121, and the other end extends out of the frame 3. The conductive adhesive 51 fills the groove 3121, and the conductive adhesive 51 is electrically connected to the grounding pin 52 and the magnetic core 2 respectively. Because the frame 3 has a groove 3121, the grounding pin 52 only needs to partially extend into the groove 3121. Then, by filling the groove 3121 with conductive adhesive 51 to connect the grounding pin 52 and the magnetic core 2, the connection between the grounding pin 52 and the magnetic core 2 can be achieved. There is no need to wrap the magnetic core 2 with copper foil. Furthermore, the grounding pin 52 and the connecting pin 6 can be of the same size and can be manufactured using the same pin mold, eliminating the need for separate pin molds due to different grounding pin 52 sizes, thus reducing production costs. Moreover, compared to the aforementioned method of drilling a hole in the magnetic core 2 and inserting the grounding pin 52 for conductive connection with conductive adhesive, the method described in this embodiment, which involves creating a groove 3121 on the frame 3 to accommodate the conductive adhesive 51, is less difficult. Additionally, the size of the portion of the grounding pin 52 inserted into the groove 3121 does not need to be precisely controlled, making processing more convenient.

[0037] Another embodiment of this application provides an integrated circuit board, which includes the electrical component 1 and the board body as described in the above embodiments, with the electrical component 1 mounted on the board body.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electrical component (1), characterized in that, include: The magnetic core (2) is provided with a receiving cavity (201) and a through-hole (202) communicating with the receiving cavity (201). A skeleton (3) is provided in the cavity (201) and another part extends out of the cavity (201) through the opening (202). The part of the skeleton (3) outside the cavity (201) is provided with a groove (3121) extending to the side wall of the magnetic core (2). The grounding assembly (5) includes a conductive adhesive (51) and a grounding pin (52). One end of the grounding pin (52) extends into the groove (3121) and the other end extends out of the skeleton (3). The conductive adhesive (51) fills the groove (3121) and is electrically connected to the grounding pin (52) and the magnetic core (2) respectively.

2. The electrical component (1) according to claim 1, characterized in that, The portion of the skeleton (3) located outside the receiving cavity (201) is provided with an opening (3122) that communicates with the groove (3121).

3. The electrical component (1) according to claim 1, characterized in that, The skeleton (3) includes a bone base (31) and a central column (32) connected to each other. The central column (32) is located in the receiving cavity (201). A part of the bone base (31) is disposed in the receiving cavity (201). Another part of the bone base (31) extends out of the receiving cavity (201) through the opening (202). The part of the bone base (31) outside the receiving cavity (201) is provided with the groove (3121).

4. The electrical component (1) according to claim 3, characterized in that, The bone base (31) includes a base portion (311) and a first extension portion (312) connected to each other. The base portion (311) is connected to the central column (32) and located in the receiving cavity (201). The first extension portion (312) is located outside the receiving cavity (201) through the opening (202), and the first extension portion (312) has the groove (3121) on the side facing the magnetic core (2).

5. The electrical component (1) according to claim 4, characterized in that, The bone base (31) further includes a second extension (313) connected to the base portion (311). The second extension (313) and the first extension (312) are located at opposite ends of the base portion (311). The first extension (312) and the second extension (313) both protrude in a direction away from the base portion (311), and a first positioning groove (301) is formed between the first extension (312), the second extension (313) and the base portion (311).

6. The electrical component (1) according to claim 3, characterized in that, The skeleton (3) also includes a bone top seat (33) connected to the central column (32). The bone top seat (33) and the bone base (31) are located at opposite ends of the central column (32), and the bone top seat (33) abuts against the magnetic core (2).

7. The electrical component (1) according to claim 6, characterized in that, The bone top seat (33) includes a top seat portion (331) and a protrusion portion (332) connected to each other. The protrusion portion (332) is provided to protrude away from the bone base (31) relative to the top seat portion (331). The top seat portion (331) abuts against the magnetic core (2) and is housed in the receiving cavity (201). The protrusion portion (332) is provided outside the receiving cavity (201) through the opening (202).

8. The electrical component (1) according to claim 7, characterized in that, The protrusion (332) includes a first protrusion (3321) and a second protrusion (3322), the first protrusion (3321) and the second protrusion (3322) are respectively located at opposite ends of the top seat (331), and a second positioning groove (302) is formed between the first protrusion (3321), the second protrusion (3322) and the top seat (331).

9. The electrical component (1) according to any one of claims 1-8, characterized in that, The grounding pin (52) is located in the groove (3121) at one end and abuts against the outer wall of the magnetic core (2).

10. An integrated circuit board, characterized in that, It includes an electrical component (1) as described in any one of claims 1-9 and a board body, wherein the electrical component (1) is mounted on the board body.

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