TWM553488U - Inductor for resisting low-frequency EMI - Google Patents

Description

Resistance to low frequency EMI

This creation is an inductor, especially an inductor that is resistant to low frequency EMI.

Common inductors can be used as chokes, windings, high and low frequency signal filters or transformer power conversions. Therefore, there is a ring inductance, as shown in the first figure, which includes a toroidal core 10 on which at least one winding 11 is wound to form an inductor.

In this technical solution, the toroidal inductor generally has the disadvantage of being bulky, and is difficult to mount on the circuit substrate by surface-mount technology (SMT). Although it can be a "filter inductor" disclosed in the Republic of China Patent No. 482320, as shown in FIG. 2 of the case No. 482320, the filter inductor is further provided with a carrying device for facilitating surface adhesion (SMD) mounting. On the circuit board, but the carrier device is provided, the volume is larger, which is more difficult to meet the needs of the volume reduction of modern electronic products.

Therefore, how to improve the above-mentioned deficiencies, that is, the technical difficulties that the applicant of this case wants to solve.

In view of the lack of practice, the purpose of this creation is to develop an inductor that is resistant to low frequency EMI.

In order to achieve the above object, the present invention provides an inductance against low frequency EMI, comprising: a magnetic core body, the magnetic core body is a MnZn ferrite material, the magnetic core body is provided with a first winding post and a first a first bobbin, a first flange extending from the same side of the first bobbin and the second bobbin, and a first extension of the first bobbin and the second bobbin a first flange is disposed on the first flange, the first carrier is provided with a first end electrode and a second end electrode, and the second flange is provided with a second carrier The second carrier is provided with a third end electrode and a fourth end electrode, and the first flange and the second flange are respectively rectangular; a first coil is wound around the first bobbin. And the first coil is electrically connected to the first end electrode and the third end electrode respectively; a second coil is wound on the second bobbin, and the two ends of the second coil are respectively Electrically connected to the second terminal electrode and the fourth terminal electrode.

The first flange of the first flange is provided with a plurality of first latching portions, and the first carrier is engaged between the first latching portions, and one of the sides of the second flange a plurality of second card abutting portions are disposed on the periphery, the second carrier plate is disposed between the second card abutting portions, and the first to fourth end electrodes are respectively provided with a first receiving groove, a second accommodating groove, a third accommodating groove and a fourth accommodating groove, the two ends of the first coil are respectively accommodated in the first accommodating groove and the third accommodating groove, and the second coil The two ends are respectively disposed in the second accommodating groove and the fourth accommodating groove. The first carrier is provided with a plurality of first abutting portions, and the first abutting portions are disposed to be disposed around the first end electrode and the second end electrode, and the second carrier is provided on the second carrier The plurality of second abutting portions are disposed to be disposed adjacent to the third end electrode and the fourth end electrode. Further, the first carrier board and the second carrier board are formed of a printed circuit board (PCB).

俾This design can reduce the size of the inductor, so it can meet the modernization The need to reduce the volume of the sub-products is more conducive to surface adhesion (SMD) on the circuit board to achieve the effect.

[Use]

10‧‧‧Round core

11‧‧‧Winding

[this creation]

2‧‧‧magnetic core body

21‧‧‧First bobbin

22‧‧‧second bobbin

23‧‧‧First flange

231‧‧‧ First card arrival

24‧‧‧second flange

241‧‧‧Second card arrival

25‧‧‧ first carrier

26‧‧‧Second carrier

31‧‧‧First-end electrode

32‧‧‧second terminal electrode

33‧‧‧Terminal electrode

34‧‧‧ fourth end electrode

35‧‧‧First accommodating slot

36‧‧‧Second accommodating slot

37‧‧‧The third accommodating slot

38‧‧‧fourth receiving slot

6‧‧‧First Abutment

7‧‧‧Second Abutment

4‧‧‧First coil

41‧‧‧

42‧‧‧

5‧‧‧second coil

51‧‧‧

52‧‧‧

100‧‧‧SMD

200‧‧‧ circuit substrate

The first figure is a schematic diagram of the structure of a conventional ring inductor.

The second figure is a schematic exploded perspective view of the low frequency EMI resistant inductor of the preferred embodiment of the present invention.

The third drawing is a schematic view of a three-dimensional combination structure of the second embodiment of the preferred embodiment of the present invention.

The fourth figure is a schematic diagram of the preferred embodiment of the present invention for surface adhesion (SMD).

In order for your review board to have a clear understanding of the content of this work, please refer to the following examples with diagrams and symbols, please refer to it.

Referring to the second and third figures, the present invention provides an inductance against low frequency EMI, comprising: a core body 2, a first coil 4 and a second coil 5.

The core body 2 can be a MnZn ferrite material having higher magnetic permeability and saturation induction than nickel zinc ferrite. The core body 2 is provided with a first bobbin 21 and a second bobbin 22, and a first flange 23 is extended on the same side of the first bobbin 21 and the second bobbin 22, and the first flange 23 is disposed. A second flange 24 is defined on the other side of the first bobbin 21 and the second bobbin 22, and the first flange 23 is provided with a first carrier 25, and the first carrier 25 is disposed on the first carrier 25 There is a first terminal electrode 31 and a second terminal electrode 32. The second carrier 24 is provided with a second carrier 26. The second carrier 26 is provided with a third terminal electrode 33 and a fourth terminal electrode 34. And the first flange 23 and the second flange 24 are each rectangular. In this embodiment, the first carrier 25 and the second carrier 26 are formed of a printed circuit board (PCB), and are not limited thereto. Therefore, this creation is not only volume Reduced (compared to prior art) and produces an effect that is resistant to low frequency electromagnetic interference (EMI). For example, when the (power terminal) passes the low-frequency noise signal or the direct current, the filtering function can be generated, which is not described here.

The first coil 4 is wound around the first bobbin 21, and the two ends 41 and 42 of the first coil 4 are electrically connected to the first end electrode 31 and the third end electrode 33, respectively. The second coil 5 is wound around the second bobbin 22, and the two ends 51 and 52 of the second coil 5 are electrically connected to the second end electrode 32 and the fourth end electrode 34, respectively.

In this embodiment, a plurality of first card abutting portions 231 are disposed on a periphery of one of the first flanges 23, and the first carrier 25 is engaged between the first card abutting portions 231. A plurality of second card abutting portions 241 are disposed on a circumference of one of the side surfaces of the second flange 24, and the second carrier plate 26 is engaged between the second card abutting portions 241, and the first to fourth ends are further A first accommodating groove 35, a second accommodating groove 36, a third accommodating groove 37 and a fourth accommodating groove 38 are respectively disposed on the electrodes 31, 32, 33, and 34, and the first coil 4 is provided. The two ends 41 and 42 are respectively received in the first accommodating groove 35 and the third accommodating groove 37, and the two ends 51 and 52 of the second coil 5 are respectively accommodated in the second accommodating groove 36 and the fourth It is accommodated in the groove 38. Therefore, an effect of better cable assembly is produced between the first coil 4, the second coil 5 and the core body 2, and the first coil 4 and the second coil 5 have respective ends 41, 42, 51, 52 The positioning of the pull (wrap) line will be more convenient (adhesive bonding can be used), which is more conducive to the surface connection (SMD) on the circuit board, and can be connected with the electrical pin on the circuit board without error (by the first The first to fourth terminal electrodes 31, 32, 33, 34 are electrically connected to the circuit substrate).

Please continue to refer to the fourth figure, in which the creation of the ring inductor is square or rectangular. The magnetic core body 2 can be picked up and placed on a circuit substrate 200 by the SMD 100, and electrically connected at the first to fourth terminal electrodes 31, 32, 33, and 34. In this embodiment, it can be modernized The need to reduce the size of electronic products (compared to the prior art), the SMD100 which is more favorable for surface adhesion is placed on the circuit substrate 200, which is a feature of the creation.

Referring to the second figure, the first carrier 25 is provided with a plurality of first abutting portions 6 disposed on the first end electrodes 31 and The periphery of the two-terminal electrode 32. Further, the second carrier 26 is provided with a plurality of second abutting portions 7 disposed on the periphery of the third terminal electrode 33 and the fourth terminal electrode 34.俾 Make this creation structurally reinforced.

The above discussion is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, the equivalent shape, structure or combination of changes made in the spirit and scope of the present invention should be It is covered by the patent application scope of this creation.

2‧‧‧magnetic core body

21‧‧‧First bobbin

22‧‧‧second bobbin

23‧‧‧First flange

231‧‧‧ First card arrival

24‧‧‧second flange

241‧‧‧Second card arrival

25‧‧‧ first carrier

26‧‧‧Second carrier

31‧‧‧First-end electrode

32‧‧‧second terminal electrode

33‧‧‧Terminal electrode

34‧‧‧ fourth end electrode

35‧‧‧First accommodating slot

36‧‧‧Second accommodating slot

37‧‧‧The third accommodating slot

38‧‧‧fourth receiving slot

6‧‧‧First Abutment

7‧‧‧Second Abutment

Claims (4)

An inductor for low-frequency EMI, comprising: a core body, the core body is a Mn-Zn ferrite material, the core body is provided with a first bobbin and a second bobbin, the first winding a first flange extends from the same side of the second bobbin and the second bobbin, and a second flange is extended on the other side of the first bobbin and the second bobbin, the first flange a first carrier is disposed on the first carrier, a first terminal electrode and a second terminal electrode are disposed on the first carrier, a second carrier is disposed on the second flange, and a third carrier is disposed on the second carrier a first electrode and a fourth end electrode, wherein the first flange and the second flange are respectively rectangular; a first coil is wound around the first bobbin, and the first coil is respectively Electrically connected to the first end electrode and the third end electrode; a second coil is wound around the second bobbin, and the two ends of the second coil are electrically connected to the second end Electrode and fourth terminal electrode. The inductor of the low frequency EMI according to claim 1, wherein a circumference of one of the sides of the first flange is provided with a plurality of first card abutting portions, and the first carrier plate is coupled to the first Between the card abutting portions, a plurality of second card abutting portions are disposed on a periphery of one of the side faces of the second flange, and the second carrier plate is engaged between the second card abutting portions, and the first to The first end of the first coil is respectively provided with a first receiving groove, a second receiving groove, a third receiving groove and a fourth receiving groove, and the first ends of the first coil are respectively accommodated in the first The accommodating groove and the third accommodating groove are respectively disposed in the second accommodating groove and the fourth accommodating groove. The anti-low-frequency EMI inductor according to the second aspect of the invention, wherein the first carrier is provided with a plurality of first abutting portions, and the first abutting portions are disposed to be disposed against the first end. A plurality of second abutting portions are disposed around the electrode and the second end electrode, and the second abutting portions are disposed to be disposed adjacent to the third end electrode and the fourth end electrode. . The low frequency EMI resistant inductor as described in claim 3, wherein the first carrier and the second The carrier board is composed of a printed circuit board (PCB).