TWM524547U - Inductor - Google Patents

Description

Inductor

The present invention relates to an inductor, and more particularly to an inductor having a coil that can be used to filter, suppress noise, and/or resist electromagnetic interference.

Taiwan's new patent No. M452433 discloses an inductive component comprising a coil, a magnetic core and a cover. The coil has a coil body, two sets of electrical connecting portions formed at both ends of the coil body, and a hollow portion formed in the coil body. The two sets of electrical connecting portions are parallel to the extending direction of the hollow portion. The magnetic core is disposed in the hollow portion. The cover includes a surface having a recess, the surface of the recess has two grooves on the surface, the coil is received in the recess and the two sets of electrical connections are exposed, and the two sets of electrical connections are respectively received In the two grooves.

Taiwan's new patent No. M503638 discloses another inductive component comprising a cover, a magnetic core and a coil. The magnetic core is disposed in the cover body, the coil comprises a wire and two plate-shaped pins, the wire is wound around the magnetic core, and the two plate-shaped pins are respectively disposed at the two ends of the wire, and the thickness of each plate-shaped pin It is smaller than the diameter of the wire and protrudes from the cover via two notches, respectively. When the coil and the magnetic core are housed in the cover body, the circuit board is disposed under the cover body and the circuit board faces the cover body opening, and the solder paste is disposed on the surface of the two plate-shaped pins facing the circuit board. The inductive component is soldered to the circuit board so that the inductive component can be firmly soldered to the circuit board, and the manufacturer can directly observe the condition of the inductive component and the board soldering by visual observation.

Although the above two kinds of inductance components have partial effects in the implementation of soldering with the circuit board, when the inductance component is soldered to the circuit board, the opening of the outer cover (cover body) of the inductance component faces the circuit board downward, and The two sets of electrical connections (two pins) are the entire part soldered to the board, so the manufacturer will not see the part of the electrical connection (pin) located in the cover (cover). Whether or not there is contact with the solder of the board, the quality and reliability of the product after soldering cannot be ensured. In addition, when the electrical connection (pin) and the board are poorly soldered, it is quite difficult to rework.

Therefore, the purpose of the present invention is to provide an inductor in which the entire pin (electrode) of the inductor is exposed to the outer cover, so that it is possible to surely grasp the spot welding and positioning of the coil pin and the circuit board, thereby avoiding The welding process is offset or poor.

An inductor according to an embodiment of the present invention includes a housing, an inner core, and a coil. The outer cover includes a first axially opposite side wall and a bottom wall connected to the bottom of the two side walls. The two side walls define a storage space therebetween, the storage space is perpendicular to the first axial direction The second axial direction extends through the outer cover, and an opening is defined between the tops of the two side walls. The opening is in communication with the receiving space, and the two sides of the top of each side wall are provided with at least one groove. The inner core is housed in the housing space of the outer cover. The coil includes a winding portion and two legs, the winding portion surrounding the outer surface of the inner core and being received in the receiving space of the outer cover, the two legs being individually from the two ends of the winding portion The length direction of the inner core (the first axial direction) extends toward the winding portion, and the two legs extend out of the top opening of the outer cover and are respectively located in the grooves of a corresponding side wall.

An inductor according to another embodiment of the present invention includes a housing, an inner core, and a coil. The outer cover includes a first axially opposite side wall and a bottom wall connected to the bottom of the two side walls. The two side walls define a storage space therebetween, the storage space is perpendicular to the first axial direction a second axial direction extends through the outer cover, and an opening is defined between the tops of the two side walls, the opening is in communication with the receiving space, and the two sides of the top side of each side wall are provided with at least one first groove, the first groove edge The first axial extension is further provided with a second recess at the top of each side wall, the second recess extending along the second axial direction and communicating with the first recess. The inner core is housed in the housing space of the outer cover. The coil includes a winding portion and two legs. The winding portion surrounds the outer surface of the inner core and is received in the housing space of the outer cover. Each of the pins is L-shaped and includes a first segment and a first portion. In the second stage, the first segment of the two pins is extended from the two ends of the winding portion along the length direction of the inner core toward the winding portion, and the second portion of the two pins is individually The first end of the first leg extends in a longitudinal direction perpendicular to the inner core, and the first leg of the two legs is located in the first groove of the two sidewalls, and the second segment of the two legs is individually Located in the second groove of the two side walls.

Preferably, the two side ends of the tops of the side walls of the outer cover are individually provided with a first groove, and the two first grooves are spaced apart in the second axial direction. The second groove is located between the first grooves and is in communication.

Other objects, advantages and features of the present invention will be apparent from the following description of the preferred embodiments illustrated herein.

The preferred embodiment of the present invention will now be described by way of example only and not by way of limitation,

1 through 3 illustrate an inductor 10 in accordance with an embodiment of the present invention. The inductor 10 is adapted to be mounted on a motherboard for filtering, suppressing noise, and/or resisting electromagnetic interference. The inductor 10 includes a housing 12, an inner core 14 and a coil 16.

In the present embodiment, the outer cover 12 is a hollow body made of a magnetic material such as ferrite. The outer cover 12 includes two side walls 18 separated by a first axial direction (X) and connected to the two side walls 18. A bottom wall 20 of the bottom portion 19. An accommodation space 22 is defined between the two side walls 18, and the storage space 22 extends through the outer cover 12 along a second axial direction (Y) perpendicular to the first axial direction (X), and at the top of the two side walls 18 An opening 26 (see FIG. 3) is defined between the ends 24, and the top portion 24 and the bottom portion 19 of each side wall 18 are in a third axial direction (Z) perpendicular to the first axial direction (X) and the second axial direction (Y). The opening 26 communicates with the storage space 22 . Furthermore, at least one of the two side ends of the top portion 24 of each side wall 18 is provided with a first recess 28 extending along the first axial direction (X). In this embodiment, the two sides of the top portion 24 of each side wall 18 are individually provided with a first groove 28, and the two first grooves 28 are separated in the second axial direction (Y).

The inner core 14 is a square or cylinder made of, for example, a ferrite magnetic material, which is housed in the housing space 22 of the outer casing 12 and has two end faces 30 separated in the first axial direction (X). The two end faces 30 of the inner core 14 are opposite to the two side walls 18 of the outer cover 12 and are separated by a gap, so that an air gap is formed between the inner core 14 and the two side walls 18 of the outer cover 12, and an air gap can be used for the air gap. Adjust the sense of light when the load is light.

The coil 16 includes a winding portion 32 and two legs 34. The winding portion 32 surrounds the outer surface of the inner core 12 and is received in the housing space 22 of the outer cover 12. The winding portion 32 is wound at least one turn. In this embodiment, the two pins 34 are respectively from the two ends of the winding portion 32 along the longitudinal direction of the inner core 14 (the first axial direction (X)) toward the winding portion 32. Extending, that is, the two legs 34 extend individually toward the side walls 18 on the opposite side. The two pins 34 of the coil 16 extend out of the top opening 26 of the outer cover 12 and are individually positioned in one of the first recesses 28 of the two side walls 18. Furthermore, after the inner core 14 and the coil 16 are received in the outer cover 12, a dielectric encapsulating material (for example, epoxy resin) may be injected into the housing space 22, and the inner core 14 and the coil may be injected. 16 is enclosed in the outer cover 12.

When the inductor 10 of the present invention is soldered to a circuit board (not shown), the opening 26 of the housing 12 of the inductor 10 faces the circuit board downwardly, and the entire portion of the two pins (electrodes) 34 Soldering with the board. Since the entire portion of the two pins 34 (including the portion located in the outer cover 12) exposes the outer cover 12, the manufacturer can surely grasp the spot welding and positioning of the two pins 34 and the circuit board. It can avoid the offset or defect in the welding process, which can improve the quality and reliability of the product. In addition, a first recess 28 is provided on each of the two ends of the top portion 24 of each side wall 18 for providing a corresponding pin 34 of the coil 16 for selective placement, so that no direction is required for assembly, and assembly time can be reduced. With cost.

4 to 6 show the inductor 10 of the second embodiment of the present invention. In the embodiment, the top portion 24 of each side wall 18 is further provided with a second recess 36 along which the second recess 36 is located. Extend to (Y). The second groove 36 is in communication with at least one of the first grooves 28. In the embodiment, the second groove 36 is located between the two first grooves 28 and communicates with each other such that the top of each side wall 18 24 has a generally braided groove. Moreover, each of the pins 34 is substantially L-shaped and includes a first segment 38 and a second segment 40. The first segment 38 of the two pins 34 are individually from the ends of the winding portion 32 along the inner magnetic portion. The length direction of the core 14 extends away from the winding portion 32 (ie, individually extending toward the side wall 18 adjacent to the side), and the second section 40 of the two legs 34 is individually from the first segment 38 The outer end extends along a length direction perpendicular to the inner core 14 (ie, along the second axis (Y)) such that the first segment 38 of the two pins 34 is individually positioned on one of the two side walls 18. The first groove 28 is located in the second groove 36 of the two side walls 18 .

When the inductor 10 according to the second embodiment is soldered to a circuit board (not shown), since the entire portion of the two pins 34 (including the first segment 38 and the second segment 40) is exposed to the outer cover 12, Therefore, the manufacturer can surely grasp the spot welding and positioning of the two pins 34 and the circuit board, thereby avoiding offset or defect in the welding process. In addition, a first recess 28 is provided on each of the two ends of the top portion 24 of each side wall 18 for providing a corresponding pin 34 of the coil 16 for selective placement, so that no direction is required for assembly. Moreover, each of the pins 34 (including the first segment 38 and the second segment 40) of this embodiment does not straddle the winding portion 32 of the coil 16, and thus, compared to the coil 16 of the first embodiment, The height of the coil 16 can be lowered (see Fig. 6), and the height of the outer cover 12 accommodating the coil 16 can also be relatively lowered, so that the overall volume of the product can be reduced.

In the foregoing specification, the present invention has been described in terms of a particular embodiment, and many variations or modifications can be made in the present invention. Therefore, obvious substitutions and modifications to those skilled in the art will still be incorporated in the scope of the patent claimed herein.

10‧‧‧Inductors
12‧‧‧ Cover

14‧‧‧ inner core
16‧‧‧ coil

18‧‧‧ side wall
19‧‧‧ bottom

20‧‧‧ bottom wall
22‧‧‧Storage space

24‧‧‧ top
26‧‧‧ openings

28‧‧‧First groove
30‧‧‧ end face

32‧‧‧Winding Department
34‧‧‧ pins

36‧‧‧second groove
38‧‧‧ first paragraph

40‧‧‧second paragraph

1 is a perspective view of an inductor according to a first embodiment of the present creation.

Figure 2 shows an exploded view of the inductor of Figure 1.

Figure 3 shows a cross-sectional view taken along line 3-3 of Figure 1.

4 is a perspective view of an inductor according to a second embodiment of the present invention.

Figure 5 shows an exploded view of the inductor of Figure 4.

Figure 6 shows a cross-sectional view taken along line 6-6 of Figure 4.

10‧‧‧Inductors

12‧‧‧ Cover

14‧‧‧ inner core

16‧‧‧ coil

18‧‧‧ side wall

19‧‧‧ bottom

20‧‧‧ bottom wall

22‧‧‧Storage space

24‧‧‧ top

28‧‧‧First groove

30‧‧‧ end face

32‧‧‧Winding Department

34‧‧‧ pins

Claims (4)

An inductor includes: an outer cover comprising a first axially opposite side wall and a bottom wall connected to a bottom of the two side walls, the two side walls defining a storage space along the storage space a second axial direction perpendicular to the first axial direction penetrates the outer cover, and an opening is defined between the tops of the two side walls, the opening is in communication with the receiving space, and the two sides of the top side of each side wall are provided with at least one groove An inner magnetic core housed in the housing space of the outer cover; and a coil including a winding portion and two pins, the winding portion surrounding the outer surface of the inner core and being received in the outer cover In the space, the two legs extend from the two ends of the winding portion along the length direction of the inner core (the first axial direction) toward the winding portion, and the two pins protrude from the outer cover The top openings are open and individually located in the grooves of a corresponding side wall. The inductor according to claim 1, wherein the two side ends of the top sides of the side walls are individually provided with a groove, and the two grooves are spaced apart in the second axial direction. An inductor includes: an outer cover comprising a first axially opposite side wall and a bottom wall connected to a bottom of the two side walls, the two side walls defining a storage space along the storage space a second axial direction perpendicular to the first axial direction penetrates the outer cover, and an opening is defined between the tops of the two side walls, the opening is in communication with the receiving space, and the two sides of the top side of each side wall are provided with at least one first a groove extending along the first axial direction, and a top surface of each of the side walls further includes a second groove extending along the second axial direction and communicating with the first groove An inner magnetic core housed in the housing space of the outer cover; and a coil including a winding portion and two pins, the winding portion surrounding the outer surface of the inner core and being received in the outer cover In the space, each pin is L-shaped and includes a first segment and a second segment, and the first segment of the two pins is individually from the two ends of the winding portion along the length of the inner core Extending away from the winding portion, the second segment of the two legs is individually from the outer end of the first segment Extending along a length direction perpendicular to the inner core, a first segment of the two pins is individually located in the first recess of the two sidewalls, and a second segment of the two pins is individually located at the second sidewall of the second sidewall Inside the groove. The inductor of claim 3, wherein the two sides of the top of each side wall are individually provided with a first groove, the two first grooves are separated in the second axial direction, and the second groove is located in the The first grooves are in communication with each other.