Magnetic assembly

Abstract

The present invention provides a magnetic assembly comprising a substrate, a core, at least one first coil, and at least one second coil. The core is provided on the substrate and includes a first magnetic column and a second magnetic column, the first and second magnetic columns located on opposite sides of the core. At least one first coil is wound clockwise around the first magnetic column of the core and includes a first input end and a first output end, the first input end and the first output end being inserted into the substrate. At least one second coil is wound counterclockwise around the second magnetic column of the core and includes a second input end and a second output end, the second input end and the second output end being inserted into the substrate.

Description

Technical Field

[0001] The present invention relates to a magnetic assembly, and particularly to a magnetic assembly in which coils are wound around different magnetic columns.

Background Art

[0002] A magnetic assembly includes a core and a plurality of coils. The plurality of coils are wound around the same magnetic column of the core in the same direction, and each coil includes a corresponding input terminal and output terminal. Since the currents flowing through the plurality of coils are different from each other, each coil of the conventional magnetic assembly cannot contact the other coil. Therefore, a relatively large distance was required between each coil of the conventional magnetic assembly and the other coil. However, such a structure increases the volume of the entire magnetic assembly and reduces the sensitivity.

[0003] Therefore, it has become an urgent need to develop a magnetic assembly that overcomes the above drawbacks.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a magnetic assembly. In the magnetic assembly, the first coil is wound around the first magnetic column clockwise, and the second coil is wound around the second magnetic column counterclockwise, so that the second input terminal of the second coil adjacent to the first input terminal of the first coil is not directly adjacent, and the second output terminal of the second coil adjacent to the first output terminal of the first coil is also not directly adjacent. Therefore, an excessive separation distance is not required between the first body of the first coil and the second body of the second coil, the overall distance between the first coil and the second coil is shortened, the volume of the entire magnetic assembly is reduced, and the sensitivity is relatively increased.

Means for Solving the Problems

[0005] To achieve the above objective, one embodiment of the present invention provides a magnetic assembly comprising a substrate, a core, at least one first coil, and at least one second coil. The core is provided on the substrate and includes a first magnetic column and a second magnetic column, the first and second magnetic columns located on opposite sides of the core. At least one first coil is wound clockwise around the first magnetic column of the core and includes a first input end and a first output end, the first input end and the first output end being inserted into the substrate. At least one second coil is wound counterclockwise around the second magnetic column of the core and includes a second input end and a second output end, the second input end and the second output end being inserted into the substrate.

[0006] The present invention offers the following beneficial effects. Specifically, in the magnetic assembly of the present invention, the first coil is wound clockwise around the first magnetic column, and the second coil is wound counterclockwise around the second magnetic column. As a result, the first input end of the first coil and the second input end of the adjacent second coil are not directly adjacent, and the first output end of the first coil and the second output end of the adjacent second coil are also not directly adjacent. Therefore, an excessive separation distance is not required between the first body of the first coil and the second body of the second coil, the overall distance between the first coil and the second coil is shortened, the overall volume of the magnetic assembly is reduced, and the sensitivity is relatively high. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram of the structure of a magnetic assembly according to the first embodiment of the present invention. [Figure 2] Figure 1 is a schematic diagram of the exploded structure of the magnetic assembly shown. [Figure 3] Figure 1 is a top view of the magnetic assembly shown. [Figure 4] Figure 1 is a bottom view of the magnetic assembly shown. [Figure 5] Figure 1 is a structural diagram of the equivalent circuit of the magnetic assembly shown. [Figure 6] This is a schematic diagram of the structure of a magnetic assembly according to a second embodiment of the present invention. [Figure 7] Figure 6 is a schematic diagram of the exploded structure of the magnetic assembly shown. [Figure 8] Figure 6 is a top view of the magnetic assembly shown. [Figure 9] Figure 6 is a bottom view of the magnetic assembly shown. [Figure 10] This is a top view of a magnetic assembly according to a third embodiment of the present invention. [Figure 11] This is a top view of a magnetic assembly according to a fourth embodiment of the present invention. [Modes for carrying out the invention]

[0008] The following description details several embodiments that embody the features and advantages of the present invention. The present invention can be modified in various ways in different embodiments, none of which depart from the scope of the invention, and the description and drawings are used for illustrative purposes only and are not intended to limit the invention.

[0009] Refer to Figures 1, 2, 3, and 4. Figure 1 is a schematic diagram of the structure of a magnetic assembly according to the first embodiment of the present invention, Figure 2 is a schematic diagram of the exploded structure of the magnetic assembly shown in Figure 1, Figure 3 is a top view of the magnetic assembly shown in Figure 1, and Figure 4 is a bottom view of the magnetic assembly shown in Figure 1. As shown in the figures, the magnetic assembly 1 of this embodiment is provided on a main circuit board (not shown) and includes a substrate 2, a core 3, a first coil 4, and two second coils 5.

[0010] The core 3 is provided on the substrate 2 and includes a first magnetic column 31, a second magnetic column 32, a third magnetic column 33, and a fourth magnetic column 34. The first magnetic column 31 and the second magnetic column 32 are located on opposite sides of the core 3, and the third magnetic column 33 and the fourth magnetic column 34 are located on opposite sides of the core 3 and are connected between the first magnetic column 31 and the second magnetic column 32, respectively. In this embodiment, the ends of the first magnetic column 31 of the core 3 are connected to the first end of the third magnetic column 33 and the first end of the fourth magnetic column 34, respectively, and the ends of the second magnetic column 32 of the core 3 are connected to the second end of the third magnetic column 33 and the second end of the fourth magnetic column 34, respectively, thereby creating a sealed structure for the core 3. The sealed structure consists of the first magnetic column 31, the second magnetic column 32, the third magnetic column 33, and the fourth magnetic column 34, or is an integrally molded structure. In this embodiment, the lengths of the first magnetic column 31 and the second magnetic column 32 of the core 3 are greater than the lengths of the third magnetic column 33 and the fourth magnetic column 34.

[0011] In this embodiment, the first coil 4 is located between two second coils 5. As shown in Figures 1, 3, and 4, the first coil 4 is wound clockwise around the first magnetic pole 31 of the core 3 and includes a first body 41, a first input end 42, and a first output end 43. The first body 41 is wound around the first magnetic pole 31 of the core 3, the first input end 42 is the first end of the first coil 4 and is inserted into the substrate 2, and the first output end 43 is the second end of the first coil 4 opposite the first end and is inserted into the substrate 2. The first coil 4 receives power from the main circuit board via the first input end 42 and supplies power to the main circuit board via the first output end 43. In this embodiment, as shown in Figure 4, the first input end 42 and the first output end 43 of the first coil 4 are located on both sides of the position where the first magnetic column 31 is projected onto the substrate 2, and the first output end 43 of the first coil 4 is located between the position where the first magnetic column 31 is projected onto the substrate 2 and the position where the second magnetic column 32 is projected onto the substrate 2.

[0012] Each second coil 5 is wound counterclockwise around the second magnetic pole 32 of the core 3 and includes a second body 51, a second input end 52, and a second output end 53. The second body 51 is wound around the second magnetic pole 32 of the core 3, the second input end 52 is the first end of the second coil 5 and is inserted into the substrate 2, and the second output end 53 is the second end of the fifth coil 4 opposite the first end and is inserted into the substrate 2. The second coil 5 receives power from the main circuit board via the second input end 52 and supplies power to the main circuit board via the second output end 53. In this embodiment, as shown in Figure 4, the second input end 52 and second output end 53 of each second coil 5 are located on both sides of the position where the second magnetic column 32 is projected onto the substrate 2, and the second input end 52 of the second coil 5 is located between the position where the first magnetic column 31 is projected onto the substrate 2 and the position where the second magnetic column 32 is projected onto the substrate 2. Also in this embodiment, the number of turns in which the first body 41 of the first coil 4 is wound around the first magnetic column 31 is the same as the number of turns in which the second body 51 of each second coil 5 is wound around the second magnetic column 32, for example, 5.

[0013] Refer to Figures 3 and 4. In this embodiment, the first coil 4 is wound clockwise around the first magnetic pole 31, and the second coil 5 is wound counterclockwise around the second magnetic pole 32. As a result, the first input end 42 of the first coil 4 and the second input end 52 of the adjacent second coil 5 are located on opposite sides of the first magnetic pole 31, and the first output end 43 of the first coil 4 and the second output end 53 of the adjacent second coil 5 are located on opposite sides of the second magnetic pole 32.

[0014] From the above, in the magnetic assembly 1 of the present invention, the first coil 4 is wound clockwise around the first magnetic column 31, and the second coil 5 is wound counterclockwise around the second magnetic column 32. As a result, the first input end 42 of the first coil 4 and the second input end 52 of the adjacent second coil 5 are not directly adjacent, and the first output end 43 of the first coil 4 and the second output end 53 of the adjacent second coil 5 are not directly adjacent. Therefore, an excessive separation distance is not required between the first body 41 of the first coil 4 and the second body 51 of the second coil 5. The overall distance between the first coil 4 and the second coil 5 is shortened, the overall volume of the magnetic assembly 1 becomes relatively small, and the sensitivity becomes relatively high.

[0015] Refer to Figures 1 to 4. In this embodiment, the magnetic assembly 1 further includes an insulating member 6 for isolating the first coil 4 from the two second coils. The insulating member 6 includes a first insulating sub-member 61, two second insulating sub-members 62, and two third insulating sub-members 63. The first insulating sub-member 61 is located between the first body 41 of the first coil 4 and the second magnetic column 32. The two second insulating sub-members 62 are provided on opposite sides of the first insulating sub-member 61, and each second insulating sub-member 62 is located between the first body 41 of the first coil 4 and the corresponding second body 51 of the second coil 5. The two third insulating sub-members 63 are each provided on the side of the corresponding second insulating sub-member 62 away from the first insulating sub-member 61, and each third insulating sub-member 63 is located between the second body 51 of the second coil 5 and the first magnetic column 31.

[0016] Refer to Figure 5 in conjunction with Figures 1 to 4. Figure 5 is a structural diagram of the equivalent circuit of the magnetic assembly shown in Figure 1. As shown in Figure 5, the electrical circuit configuration of the magnetic assembly 1 consists of three inductors: a first inductor 71, a second inductor 72, and a third inductor. The first inductor 71 is formed by winding a first coil 4 around a first magnetic pole 31, where the first end 71a of the first inductor 71 is the first input end 42 of the first coil 4, and the second end 71b of the first inductor 71 is the first output end 43 of the first coil 4. The second inductor 72 is formed by winding one of the second coils 5 around a second magnetic pole 32, where the first end 72a of the second inductor 72 is the second output end 53 of the corresponding second coil 5, and the second end 72b of the second inductor 72 is the second input end 52 of the corresponding second coil 5. The third inductor 73 is formed by winding the other second coil 5 around the second magnetic pole 32, where the first end 73a of the third inductor 73 is the second output end 53 of the corresponding second coil 5, and the second end 73b of the third inductor 73 is the second input end 52 of the corresponding second coil 5. In this embodiment, the second end 72b of the second inductor 72, the first end 71a of the first inductor 71, and the second end 73b of the third inductor 73 are named ends.

[0017] Refer to Figures 6, 7, 8, and 9. Figure 6 is a schematic diagram of the structure of a magnetic assembly according to a second embodiment of the present invention, Figure 7 is a schematic diagram of the exploded structure of the magnetic assembly shown in Figure 6, Figure 8 is a top view of the magnetic assembly shown in Figure 6, and Figure 9 is a bottom view of the magnetic assembly shown in Figure 6. As shown, compared to the magnetic assembly 1 shown in Figures 1 to 4, the magnetic assembly 1a of this embodiment has one first coil 4 and two second coils 5, with one of the two second coils 5 located between the other second coil 5 and the first coil 4. Note that the structure of the first coil 4 and the second coil 5 of this embodiment is similar to the structure of the first coil 4 and the second coil 5 of Figures 1 to 4, so a detailed explanation is omitted here. In this embodiment, the insulating member 6 of the magnetic assembly 1a includes only a first insulating sub-member 61, one second insulating sub-member 62, and one third insulating sub-member 63 for isolating the first coil 4 from the adjacent second coil 5, and its installation method is similar to that of the insulating member 6 of the magnetic assembly 1 in the first embodiment, so a description is omitted here. In this embodiment, the core 3 includes only a first magnetic column 31 and a second magnetic column 32, the first magnetic column 31 and the second magnetic column 32 are each arc-shaped, and both ends of the first magnetic column 31 are connected to both ends of the second magnetic column 32, so that the core 3 has a sealed structure, and in this case, the first magnetic column 31 and the second magnetic column 32 of the core 3 are integrally molded.

[0018] Refer to FIG. 10. FIG. 10 is a top view of the magnetic assembly according to the third embodiment of the present invention. As shown in the figure, compared with the magnetic assembly 1 in FIG. 3, the first main body 41 of the first coil 4 of the magnetic assembly 1b in the present embodiment includes a first sub-coil 44 and a second sub-coil 45. The first sub-coil 44 and the second sub-coil 45 are wound around the first magnetic column 31 in a spaced-apart manner, and the first sub-coil 44 and the second sub-coil 45 are connected in series or in parallel by wiring in the substrate 2. In the present embodiment, the total number of turns of the first sub-coil 44 wound around the first magnetic column 31 and the total number of turns of the second sub-coil 45 wound around the first magnetic column 31 are the same as the number of turns of each second coil 5 wound around the second magnetic column 32. For example, the first sub-coil 44 and the second sub-coil 45 are each wound 2 times, or the first sub-coil 44 is wound 1 time and the second sub-coil 45 is wound 3 times. In the present embodiment, the number of turns of the second coil 5 is 4 turns.

[0019] Refer to FIG. 11. FIG. 11 is a top view of the magnetic assembly according to the fourth embodiment of the present invention. As shown in the figure, compared with the magnetic assembly 1b in FIG. 10, the second main body 51 of each second coil 5 of the magnetic assembly 1c in the present embodiment includes a third sub-coil 54 and a fourth sub-coil 55. The third sub-coil 54 and the fourth sub-coil 55 are wound around the second magnetic column 32 in a spaced-apart manner, and the third sub-coil 54 and the fourth sub-coil 55 are connected in series or in parallel by wiring in the substrate 2. In the present embodiment, the total number of turns of the first sub-coil 44 wound around the first magnetic column 31 and the total number of turns of the second sub-coil 45 wound around the first magnetic column 31 are the same as the total number of turns of the third sub-coil 54 wound around the second magnetic column 32 and the total number of turns of the fourth sub-coil 55 wound around the second magnetic column 32. For example, the first sub-coil 44 and the second sub-coil 45 are each wound 2 times, or the first sub-coil 44 is wound 1 time and the second sub-coil 45 is wound 3 times.

[0020] As described above, the first coil of the magnetic assembly of the present invention is wound around the first magnetic column in the clockwise direction, and the second coil is wound around the second magnetic column in the counterclockwise direction. As a result, the second input terminal of the second coil adjacent to the first input terminal of the first coil is not directly adjacent, and the second output terminal of the second coil adjacent to the first output terminal of the first coil is not directly adjacent either. Therefore, an excessive separation distance between the first body of the first coil and the second body of the second coil is not required, the overall distance between the first coil and the second coil is shortened, the volume of the entire magnetic assembly is relatively small, and the sensitivity is relatively high.

Explanation of Signs

[0021] 1, 1a, 1b, 1c: Magnetic assembly 2: Substrate 3: Core 31: First magnetic column 32: Second magnetic column 33: Third magnetic column 34: Fourth magnetic column 4: First coil 41: First body 42: First input terminal 43: First output terminal 44: First sub-coil 45: Second sub-coil 5: Second coil 51: Second body 52: Second input terminal 53: Second output terminal 54: Third sub-coil 55: Fourth sub-coil 6: Insulating member 61: First insulating sub-member 62: Second insulating sub-member 63: Third insulating sub-member 71: First inductor 71a: First end 71b: Second end 72: Second inductor 72a: First end 72b: Second end 73: Third inductor 73a: First end 73b: End 2

Claims

1. A magnetic assembly comprising a substrate, a core, at least one first coil, and at least one second coil, The core is provided on the substrate and includes a first magnetic column and a second magnetic column, the first magnetic column and the second magnetic column being located on opposite sides of the core. The at least one first coil is wound clockwise around the first magnetic column of the core and includes a first input end and a first output end, the first input end and the first output end being inserted into the substrate, A magnetic assembly in which at least one second coil is wound counterclockwise around the second magnetic column of the core and includes a second input end and a second output end, the second input end and the second output end being inserted into the substrate.

2. The magnetic assembly according to claim 1, wherein the first input end and the first output end of each first coil are located on both sides opposite to the position obtained by projecting the first magnetic column onto the substrate, and the second input end and the second output end of each second coil are located on both sides opposite to the position obtained by projecting the second magnetic column onto the substrate.

3. The magnetic assembly according to claim 1, wherein the first input end of each first coil and the second input end of the adjacent second coil are located on both sides opposite to the position obtained by projecting the first magnetic column onto the substrate, and the first output end of each first coil and the second output end of the adjacent second coil are located on both sides opposite to the position obtained by projecting the second magnetic column onto the substrate.

4. Including insulating material, The magnetic assembly according to claim 1, wherein at least a portion of the insulating member is located between any two of the at least one first winding and the at least one second winding.

5. The magnetic assembly according to claim 1, wherein the at least one first coil comprises one first coil, the at least one second coil comprises two second coils, and the first coil is located between the two second coils.

6. The magnetic assembly according to claim 1, wherein the at least one first coil comprises one first coil, and the at least one second coil comprises two second coils, wherein one of the two second coils is located between the other second coil and the first coil.

7. The magnetic assembly according to claim 1, wherein the core includes a third magnetic column and a fourth magnetic column, the third magnetic column and the fourth magnetic column located on opposite sides of the core, both ends of the first magnetic column connected to the first end of the third magnetic column and the first end of the fourth magnetic column, respectively, and both ends of the second magnetic column connected to the second end of the third magnetic column and the second end of the fourth magnetic column, respectively, so that the core forms a sealed structure, and the sealed structure consists of the first magnetic column, the second magnetic column, the third magnetic column and the fourth magnetic column, or is a integrally molded structure.

8. The magnetic assembly according to claim 1, wherein the first magnetic column and the second magnetic column of the core are each arc-shaped, both ends of the first magnetic column are connected to both ends of the second magnetic column, the core has a sealed structure, and the first magnetic column and the second magnetic column of the core have an integrally molded structure.

9. The magnetic assembly according to claim 1, wherein the number of turns of the at least one first coil wound around the first magnetic column is the same as the number of turns of the at least one second coil wound around the second magnetic column.

10. The magnetic assembly according to claim 1, wherein each of the first coils includes a first body including a first subcoil and a second subcoil, the first subcoil and the second subcoil being connected in series or in parallel, and the sum of the number of turns of the first subcoil wound around the first magnetic pole and the number of turns of the second subcoil wound around the first magnetic pole is the same as the number of turns of each of the second coils wound around the second magnetic pole.

11. The magnetic assembly according to claim 10, wherein each of the second coils includes a second body comprising a third subcoil and a fourth subcoil, the third subcoil and the fourth subcoil being connected in series or in parallel, and the sum of the number of turns of the third subcoil wound around the second magnetic pole and the number of turns of the fourth subcoil wound around the second magnetic pole is the same as the sum of the number of turns of the first subcoil wound around the first magnetic pole and the number of turns of the second subcoil wound around the first magnetic pole.

12. The magnetic assembly according to claim 11, wherein the number of turns of the first subcoil wound around the first magnetic column, the number of turns of the second subcoil wound around the first magnetic column, the number of turns of the third subcoil wound around the second magnetic column, and the number of turns of the fourth subcoil wound around the second magnetic column are all the same.

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