TWM590770U - Inductor - Google Patents

Abstract

This creation relates to an inductor, which includes an outer cover, an inner magnetic core, and a conductive plate. The housing includes two side walls and an opening defined between the bottoms of the two side walls. The inner magnetic core is accommodated in the outer cover. The conductive plate includes a body portion accommodated in the housing and two terminals extending from the opening outside the housing. The body portion is sheathed outside the inner magnetic core. The two terminals are used to connect to a circuit board and each includes a A first bending portion and a second bending portion, the first bending portion extends from one end of the main body portion along a lateral direction toward the outside of the outer cover, and the second bending portion is from the first bending portion The outer end is integrally bent upward and extends along the lateral direction toward the inner side of the outer cover, so that the second bent portion is between the bottom of a corresponding side wall and the first bent portion.

Description

Inductor

This work is about an inductor, especially an inductor that can be used to filter, suppress noise and/or resist electromagnetic interference.

FIG. 1 shows a conventional inductor 10 which includes a cover 12, a magnetic core 14 and a conductive plate 16. The cover 12 is made of a magnetic material such as ferrite and has a storage space 18 therein. The cover 12 has an opening 20 on one side, and the magnetic core 14 is accommodated in the storage space 18 of the cover 12. The conductive plate 16 includes a main body portion 22 having a U-shaped cross section and two terminals 24 bent outward in opposite directions from both ends of the main body portion 22, and each terminal 24 has an arc between the main body portion 22状的弯点26。 The bending point 26. The main body 22 is sleeved outside the magnetic core 14 and is located between the cover 12 and the magnetic core 14. Each terminal 24 is formed by a bent portion protruding from the opening 20 of the cover body 12 and is partially located in a groove (not labeled) provided at the bottom of the cover body 12. The bottom surface (outside surface) of the two terminals 24 can be soldered to a circuit board (not shown).

In order to facilitate the assembly of the conductive plate 16 inside the cover 12, the bottom of the cover 12 needs to be provided with a chamfer 28 corresponding to the bending point 26 to provide an assembly space. However, the arrangement of the chamfer 28 is not conducive to the molding of the cover body 12 and also increases the loss of the core mold during mass production. Furthermore, when the terminal 24 of the conductive plate 16 is soldered to the circuit board, since the thickness of the material of the conductive plate 16 is generally only 0.2-0.4 mm, the amount of soldering on the side that can be soldered to the terminal 24 is small, which is unfavorable The manufacturing personnel directly observe the soldering status of the inductor 10 and the circuit board directly, that is, the manufacturing personnel cannot confirm whether the terminal 24 is in contact with the solder of the circuit board, resulting in the inability to ensure the quality and reliability of the product after soldering. In addition, when the soldering of the terminal 24 to the circuit board is defective, it is quite difficult to reprocess.

For this reason, the purpose of this creation is to provide an inductor whose terminals can be surely positioned in the outer cover to avoid deviations or defects in the welding process. In addition, the bottom of the outer cover of the inductor does not require a chamfered assembly space, Achieve the effect of forming the outer cover, and can reduce the loss of iron core mold.

An inductor according to an embodiment of the present invention includes an outer cover, an inner magnetic core, and a conductive plate. The inside of the outer cover has a storage space. The outer cover includes a laterally divided two side walls and an opening defined between the bottoms of the two side walls. The opening communicates with the storage space. The inner magnetic core is accommodated in the storage space of the outer cover. The conductive plate includes a body portion accommodated in the housing and two terminals extending from the opening outside the housing. The body portion is sheathed outside the inner magnetic core. The two terminals are used to connect to a circuit board and each includes a A first bending portion and a second bending portion, the first bending portion extends from one end of the main body portion along the lateral direction toward the outside of the outer cover, and the second bending portion is from the first bending portion The outer end is integrally bent upward and extends along the lateral direction toward the inner side of the outer cover, so that the second bent portion is between the bottom of a corresponding side wall and the first bent portion.

In one embodiment, a groove is formed at the bottom of each side wall of the housing, and the second bent portions of the two terminals are respectively combined into the grooves of the two side walls.

Preferably, the conductive plate is made of a metal sheet, and the thickness of the terminal is about twice the thickness of the conductive plate.

The other purposes, advantages and features of this creation will be understood by the following detailed description of the preferred embodiments and with reference to the accompanying drawings.

The specific embodiments which are only examples but are not intended to be limiting are described below with reference to the attached drawings as follows:

2 to 5 show an inductor 30 according to an embodiment of the present invention. The inductor 30 can be used to filter, suppress noise, and/or resist electromagnetic interference. The inductor 30 includes an outer cover 32, an inner magnetic core 34 and a conductive plate 36. In this embodiment, the outer cover 32 is made of a magnetic material such as ferrite and has a receiving space 38 inside. The outer cover 32 includes a laterally divided two side walls 40 and a bottom 41 defined at the bottom of the two side walls 40 There is an opening 42 between the two, and the opening 42 communicates with the storage space 38. Furthermore, a groove 44 is provided in the bottom 41 of each side wall 40.

The inner magnetic core 34 is made of, for example, a square column or a cylinder made of ferrite magnetic material, which is accommodated in the storage space 38 of the outer cover 32 and has two end surfaces 46 divided in the lateral direction. The two end surfaces 46 of the inner magnetic core 34 are opposite to the two side walls 40 of the outer cover 32 and separated by a gap.

The conductive plate 36 is made of a metal sheet and includes a U-shaped main body 48 and two terminals 50 bent outward from opposite ends of the main body 48 in opposite directions. The main body 48 is sleeved outside the inner magnetic core 34 and is located between the outer cover 32 and the inner magnetic core 34. The two terminals 50 protrude from the opening 42 of the outer cover 32 and are respectively coupled to the bottom of the two side walls 40 The groove 44. The two terminals 50 are used to connect to a circuit board 51 (see FIG. 6). Therefore, when the two terminals 50 of the conductive plate 36 are energized, the conductive plate 36 can generate a magnetic field, so that the inductor 30 can store and release energy through electromagnetic induction.

In this embodiment, each terminal 50 includes a first bent portion 52 and a second bent portion 54. The first bending portion 52 extends from one end of the main body portion 48 along the lateral direction toward the outside of the outer cover 32 and is partially integrated in the groove 44 of the bottom 41 of one of the side walls 40 (see FIG. 5, first bending The folded portion 52 is partially exposed outside the groove 44 so as to be combined with the circuit substrate 51). The second bending portion 52 is integrally bent upward from the outer end of the first bending portion 52 and extends along the lateral direction toward the inner side of the cover 32 so that the second bending portion 52 is combined with one of the side walls The groove 44 of the bottom 41 of the 40 is located between the bottom 41 and the first bending portion 52. Furthermore, after the inner magnetic core 34 and the conductive plate 36 are accommodated in the outer cover 32, a dielectric encapsulating material (such as epoxy resin) can be injected into the storage space 38 to connect the inner magnetic core 34 and the conductive The board 36 is enclosed in the outer cover 32.

When the inductor 30 of the present invention is soldered to the circuit board 51, the opening 42 of the outer cover 32 of the inductor 30 faces the circuit board 51 (see FIG. 6), and the first and second terminals 50 are connected by solder paste. The second bent portions 52 and 54 are soldered to the circuit board 51 so that the inductor 30 is firmly coupled to the circuit board 51.

The inductor 30 according to this creation, through the innovative design of the two-terminal 50, will have the following advantages over conventional inductors:

1. Since each terminal 50 further includes a second bent portion 54 that is folded upward from the first bent portion 52, the thickness of the terminal 50 is about twice the thickness of the material of the conductive plate 36. Therefore, even if the The bottom of the outer cover 32 is not provided with the assembly space of the chamfer 28 shown in FIG. 1, and the conductive plate 36 can also be easily assembled inside the outer cover 32 (see FIG. 5 ). In the case where no chamfer 28 is required, it will facilitate the forming of the outer cover 32, and can reduce the loss of the iron core mold, thereby improving the service life. Furthermore, the second bending portion 54 is completely integrated in the groove 44 (the depth of the groove 44 is slightly smaller than the thickness of the terminal 50, but greater than the depth of the groove at the bottom of the cover 12 of FIG. 1), The terminal 50 can be surely positioned on the bottom 41 of the cover 32 to avoid deviation or defect during the welding process, thereby improving the quality and reliability of the product.

2. Since each terminal 50 is provided with a second bent portion 54 that is folded upward, the entire thickness of each terminal 50 is about twice the thickness of the material of the conductive plate 36, so the terminal 50 is soldered to the circuit board In the process on 51, the amount of side-climbing tin 56 will be large (see FIG. 6), so that the manufacturing personnel can directly observe the welding condition of the inductor 30 and the circuit board 51 in a visual manner, which is convenient for appearance inspection.

In the foregoing description, this creation is only described for a specific embodiment, and there are still many variations or modifications according to the characteristics of this creation. Therefore, obvious substitutions and modifications that can be made by those who are familiar with this skill will still be incorporated into the scope of the patent claimed by this creation.

10‧‧‧Inductor 12‧‧‧ Cover

14‧‧‧ magnetic core 16‧‧‧Conductive plate

18‧‧‧Storage space 20‧‧‧ opening

22‧‧‧Main part 24‧‧‧terminal

26‧‧‧Bending point 28‧‧‧Chamfer

30‧‧‧Inductor 32‧‧‧Outer cover

34‧‧‧Magnetic core 36‧‧‧Conductive plate

38‧‧‧Storage space 40‧‧‧Side wall

41‧‧‧Bottom 42‧‧‧ opening

44‧‧‧groove 46‧‧‧End

48‧‧‧Main part 50‧‧‧terminal

51‧‧‧ circuit board 52‧‧‧The first bending part

54‧‧‧Second bending part 56‧‧‧Side climbing tin

Figure 1 shows a cross-sectional view of a conventional inductor.

FIG. 2 is a perspective view of an inductor according to an embodiment of the present invention.

FIG. 3 is another perspective view of the inductor of FIG. 2.

4 is an exploded view of the inductor of FIG. 2.

Fig. 5 is a cross-sectional view taken along line 5-5 of Fig. 2.

6 shows a schematic cross-sectional view of the inductor of FIG. 2 soldered to a circuit substrate.

30‧‧‧Inductor

32‧‧‧Outer cover

34‧‧‧Magnetic core

36‧‧‧Conductive plate

38‧‧‧Storage space

40‧‧‧Side wall

41‧‧‧Bottom

42‧‧‧ opening

44‧‧‧groove

46‧‧‧End

48‧‧‧Main part

50‧‧‧terminal

52‧‧‧The first bending part

54‧‧‧Second bending part

Claims (3)

An inductor including: An outer cover having a storage space inside, the outer cover including a laterally separated two side walls and an opening defined between the bottoms of the two side walls, the opening communicating with the storage space; An inner magnetic core, which is accommodated in the storage space of the outer cover; and A conductive plate including a main body part accommodated in the outer cover and two terminals extending out of the outer cover from the opening, the main body part is sheathed outside the inner magnetic core, the two terminals are used to connect to a circuit board and Each includes a first bending portion and a second bending portion, the first bending portion extends from one end of the main body portion along the lateral direction toward the outside of the outer cover, and the second bending portion is derived from the first The outer end of a bending portion is integrally bent upward and extends along the lateral direction toward the inner side of the outer cover, so that the second bending portion is between the bottom of a corresponding side wall and the first bending portion. According to the inductor of claim 1 of the patent application scope, wherein the bottom of each side wall of the housing is provided with a groove, and the second bent portions of the two terminals are respectively integrated into the grooves of the two side walls. According to the inductor of claim 1 or 2, the conductive plate is made of a metal sheet, and the thickness of the terminal is about twice the thickness of the conductive plate.

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