CN218182017U - Separated common mode inductor - Google Patents
Separated common mode inductor Download PDFInfo
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- CN218182017U CN218182017U CN202222333958.5U CN202222333958U CN218182017U CN 218182017 U CN218182017 U CN 218182017U CN 202222333958 U CN202222333958 U CN 202222333958U CN 218182017 U CN218182017 U CN 218182017U
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Abstract
The utility model relates to a disconnect-type common mode inductance belongs to common mode inductance's technical field, it includes the circuit board, the circuit board upper surface is provided with coil assembly, coil assembly includes first coil and second coil, be provided with first magnetic core in the first coil, be provided with first bobbin between first coil and the first magnetic core, first coil winding is at the circumference lateral wall of first bobbin, be provided with the second magnetic core in the second coil, be provided with the second bobbin between second coil and the second magnetic core, the circumference lateral wall of second bobbin is twined to the second coil, this application has the effect that reduces the cost of overhaul.
Description
Technical Field
The application relates to the technical field of common mode inductors, in particular to a separated common mode inductor.
Background
Various high-frequency circuits, digital circuits and analog circuits are mixed on main boards in computers, various servers, telecommunication products and other electronic instruments, a switching power supply in the high-frequency circuits can generate a large amount of high-frequency electromagnetic interference when working, and a common-mode inductor arranged on the main board can be used for filtering electromagnetic interference signals and inhibiting electromagnetic waves from radiating outwards.
The conventional common mode inductor is generally provided with a network transformer on a circuit board, and the conventional network transformer needs to put a plurality of coils into a shell for sealing and then insert pin tubes of the network transformer into the circuit board.
In view of the above-mentioned related technologies, the inventor believes that there is a defect in that repair costs are high because one of the coils in the network transformer is damaged and the entire network transformer needs to be replaced.
SUMMERY OF THE UTILITY MODEL
In order to reduce the maintenance cost, the application provides a disconnect-type common mode inductance.
The application provides a disconnect-type common mode inductance adopts following technical scheme:
the utility model provides a disconnect-type common mode inductance, including the circuit board, the circuit board upper surface is provided with coil assembly, and coil assembly includes first coil and second coil, is provided with first magnetic core in the first coil, is provided with first bobbin between first coil and the first magnetic core, and first coil winding is at the circumference lateral wall of first bobbin, is provided with the second magnetic core in the second coil, is provided with the second bobbin between second coil and the second magnetic core, and the second coil winding is at the circumference lateral wall of second bobbin.
Through adopting above-mentioned technical scheme, if one of them takes place to damage first coil or second coil, the staff only need change the first coil or the second coil of damage, need not all to change first coil and second coil to the effect that reduces maintenance cost has been realized.
Optionally, a plurality of coil sets are arranged on the surface of the circuit board.
By adopting the technical scheme, the number of the coil groups can be freely selected by the workers according to needs, the number of the coils in the existing network transformer is fixed, and the workers cannot be freely collocated, so that the effect of facilitating the workers is realized.
Optionally, a first shell is covered on the outer side of the first coil, and a second shell is covered on the outer side of the second coil.
Through adopting above-mentioned technical scheme, first coil and second coil are protected respectively to first casing and second casing, make first coil and second coil be difficult for damaging, have realized the effect of protection first coil and second coil.
Optionally, a fan is fixedly arranged on one side of the first casing, which is away from the second casing, a first air inlet is formed in the side wall of the first casing, which is towards one side of the fan, in a penetrating manner, a first air outlet is formed in the side wall of the first casing, which is away from one side of the fan, in a penetrating manner, a second air inlet is formed in the side of the second casing, which is towards one side of the first casing, in a penetrating manner, and a second air outlet is formed in the side of the second casing, which is away from the first casing, in a penetrating manner.
Through adopting above-mentioned technical scheme, the fan starts to blow in wind from first air intake, blows out from first air outlet again, then gets into the second air intake again, blows out from the second air outlet at last, and wind energy enough reduces the temperature of first coil and second coil, has realized the effect that first coil and second coil temperature are difficult for too high.
Optionally, a first threaded hole is formed in the upper surface of the first shell, a threaded rod is connected to the first threaded hole in an internal thread mode, a second threaded hole is formed in the upper surface of the second shell, and the threaded rod is connected to the second threaded hole in the same threaded mode.
Through adopting above-mentioned technical scheme, the volume of first casing and second casing is less, and the staff is inconvenient takes and removes, and the staff can take and remove first casing and second casing through the screw pole with the threaded rod respectively with first screw hole and second screw hole threaded connection back, has realized conveniently to first casing and second casing with take or the effect that removes.
Optionally, the surface of the circuit board is provided with a plurality of first grooves, the bottom of the first shell is embedded into the first grooves, the surface of the circuit board is provided with a plurality of second grooves, and the bottom of the second shell is embedded into the second grooves.
Through adopting above-mentioned technical scheme, first recess carries on spacingly to first casing, and the second recess carries on spacingly to the second casing, has realized the effect that first casing and second casing are difficult for taking place to remove.
Optionally, a first welding column is fixedly arranged at the bottom of the first shell, and a second welding column is fixedly arranged at the bottom of the second shell.
Through adopting above-mentioned technical scheme, the staff is through the surface welding of first welding post with first casing and circuit board at first groove, and the staff is through the surface welding of second welding post with second casing and circuit board at the second groove, has realized the effect that first casing and second casing are firm.
Optionally, a first through groove has been all seted up to the circuit board upper surface in the both sides of first recess, and first through groove is linked together with first recess, and just first through groove aligns with first welding post, and the second through groove has all been seted up to the circuit board upper surface in the both sides of second recess, and the second leads to the groove and is linked together with the second recess, and the second leads to the groove and aligns with second welding post.
Through adopting above-mentioned technical scheme, when the staff was welding, the welding wire can pass first logical groove and second logical groove respectively and weld, has realized making things convenient for staff welded effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. if one of the first coil or the second coil is damaged, a worker only needs to replace the damaged first coil or the damaged second coil, so that the effect of reducing the overhaul cost is realized;
2. the number of the coil groups can be freely selected by workers according to needs, so that the effect of facilitating the workers is achieved;
3. the first coil and the second coil are not easy to damage by the first shell and the second shell respectively, and the effect of protecting the first coil and the second coil is achieved.
Drawings
Fig. 1 is a schematic structural diagram of a separated common mode inductor according to an embodiment of the present application;
fig. 2 is a partial sectional view of the first housing and the second housing according to the embodiment of the present disclosure;
fig. 3 is a schematic partial installation diagram showing positions of a first through groove and a second through groove in the embodiment of the present application.
In the figure, 1, a circuit board; 11. a first groove; 12. a second groove; 13. a first through groove; 14. a second through groove; 2. a coil assembly; 21. a first coil; 211. a first magnetic core; 212. a first bobbin; 22. a second coil; 221. a second magnetic core; 222. a second bobbin; 3. a first housing; 31. a first air inlet; 32. a first air outlet; 33. a first threaded hole; 34. a first weld stud; 4. a second housing; 41. a second air inlet; 42. a second air outlet; 43. a second threaded hole; 44. a second weld column; 5. a fan; 6. a threaded rod.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses disconnect-type common mode inductance.
Referring to fig. 1 and fig. 2, a separated common mode inductor includes a circuit board 1, a plurality of coil groups 2 are disposed on a surface of the circuit board 1, and each coil group 2 includes a first coil 21 and a second coil 22. The first coil 21 and the second coil 22 can filter electromagnetic interference signals and suppress electromagnetic waves from radiating outwards.
Referring to fig. 2, a first magnetic core 211 is disposed in the first coil 21, a first bobbin 212 is disposed between the first magnetic core 211 and the first coil 21, the first coil 21 is wound on a circumferential side wall of the first bobbin 212, and the first casing 3 is disposed outside the first coil 21; a second magnetic core 221 is arranged in the second coil 22, a second bobbin 222 is arranged between the second magnetic core 221 and the second coil 22, the second coil 22 is wound on the circumferential side wall of the second bobbin 222, and the second casing 4 is covered on the outer side of the second coil 22.
When the normal current in the circuit board 1 flows through the first coil 21 and the second coil 22, the current generates opposite magnetic fields in the first coil 21 and the second coil 22 to cancel each other out, and at this time, the normal signal current is mainly influenced by the self-resistance of the first coil 21 and the second coil 22, and when the common mode current flows through the first coil 21 and the second coil 22, due to the isotropy of the common mode current, the magnetic fields in the same direction can be generated in the first coil 21 and the second coil 22 to increase the inductive reactance of the first coil 21 and the second coil 22, so that the first coil 21 and the second coil 22 show high impedance, and a strong damping effect is generated, thereby attenuating the common mode current and achieving the purpose of filtering.
Referring to fig. 2, first welding posts 34 are fixedly arranged on two sides of the bottom of the first shell 3, a first threaded hole 33 is formed in the upper surface of the first shell 3, and a threaded rod 6 is connected to the first threaded hole 33 in an internal thread manner; second welding post 44 has set firmly in the both sides of second casing 4 bottom, and second screw hole 43 has been seted up to the upper surface of second casing 4, and threaded rod 6 is connected to same threaded connection in the second screw hole 43.
Referring to fig. 2 and 3, a plurality of first grooves 11 are formed in the surface of the circuit board 1, the first grooves 11 are embedded in the bottom of the first housing 3, first through grooves 13 are formed in the upper surface of the circuit board 1 on two sides of the first grooves 11, the first through grooves 13 are communicated with the first grooves 11, and the first through grooves 13 are aligned with the first welding posts 34; a plurality of second grooves 12 are formed in the surface of the circuit board 1, the second grooves 12 are embedded into the bottom of the second shell 4, the second through grooves 14 are formed in two sides of each second groove 12 in the upper surface of the circuit board 1, the second through grooves 14 are communicated with the second grooves 12, and the second through grooves 14 are aligned with the second welding posts 44.
Firstly, a worker screws the threaded rod 6 into the first threaded hole 33, moves the threaded rod 6 to embed the first coil 21 and the first magnetic core 211 into the first groove 11 through the first shell 3, and then passes a welding wire through the first through groove 13, so that the first welding column 34 and the circuit board 1 are welded and fixed; then, the worker unscrews the threaded rod 6 out of the first threaded hole 33, screws the threaded rod 6 into the second threaded hole 43, moves the threaded rod 6 to insert the second coil 22 and the second magnetic core 221 into the second groove 12 through the second shell 4, and then passes the welding wire through the second through groove 14, thereby fixedly welding the second welding column 44 to the circuit board 1.
Referring to fig. 1 and fig. 3, a fan 5 is fixedly arranged on the upper surface of the circuit board 1 at one side of the first housing 3 away from the second housing 4, a first air inlet 31 is formed through the outer wall of one side of the first housing 3 facing the fan 5, and a first air outlet 32 is formed through the outer wall of one side of the first housing 3 away from the fan 5; the second casing 4 has a second air inlet 41 through the outer wall of the first casing 3, the second casing 3 has a second air outlet 42 through the outer wall of the first casing 3, and the first air inlet 31, the first air outlet 32, the second air inlet 41 and the second air outlet 42 are located at the same height.
When the circuit board 1 works, the fan 5 is started to blow air into the first air inlet 31, and the air passes through the first coil 21 and then blows out of the first air outlet 32; then, the wind blows into the second wind inlet 41, and the wind blows out of the second wind outlet 42 after passing through the second coil 22.
The implementation principle of a separated common mode inductor in the embodiment of the application is as follows: firstly, a worker screws the threaded rod 6 into the first threaded hole 33, the first shell 3 and the first coil 21 are embedded into the first groove 11 through the threaded rod 6, and then the worker enables a welding wire to pass through the first through groove 13, so that the first welding column 34 and the circuit board 1 are welded and fixed; then, the worker screws the threaded rod 6 into the second threaded hole 43, inserts the first case and the first coil into the first groove through the threaded rod 6, and then passes the welding wire through the second through groove 14, thereby fixedly welding the first welding column to the circuit board 1. In the working process of the circuit board 1, the fan 5 is started, and wind sequentially passes through the first air inlet 31, the first air outlet 32, the second air inlet 41 and the second air outlet 42, so that the working temperature of the first coil 21 and the second coil 22 can be reduced. Through above structure, realized reducing maintenance cost's effect.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A disconnect-type common mode inductance, includes circuit board (1), its characterized in that: the circuit board (1) upper surface is provided with coil assembly (2), coil assembly (2) are including first coil (21) and second coil (22), be provided with first magnetic core (211) in first coil (21), be provided with first bobbin (212) between first coil (21) and first magnetic core (211), first coil (21) winding is at the circumference lateral wall of first bobbin (212), be provided with second magnetic core (221) in second coil (22), be provided with second bobbin (222) between second coil (22) and second magnetic core (221), second coil (22) winding is at the circumference lateral wall of second bobbin (222).
2. The separated common-mode inductor according to claim 1, wherein: the surface of the circuit board (1) is provided with a plurality of groups of coil groups (2).
3. A split common-mode inductor according to claim 2, wherein: the outer side of the first coil (21) is covered with a first shell (3), and the outer side of the second coil (22) is covered with a second shell (4).
4. A split common-mode inductor according to claim 3, wherein: one side that first casing (3) deviates from second casing (4) has set firmly fan (5), first casing (3) run through towards the lateral wall of fan (5) one side and have seted up first air intake (31), the lateral wall that first casing (3) deviates from fan (5) one side runs through and has seted up first air outlet (32), second casing (4) run through towards one side of first casing (3) and have seted up second air intake (41), one side that second casing (4) deviates from first casing (3) runs through and has seted up second air outlet (42).
5. A split common-mode inductor according to claim 3, characterized in that: first screw hole (33) have been seted up to first casing (3) upper surface, first screw hole (33) female connection has threaded rod (6), and second screw hole (43) have been seted up to the upper surface of second casing (4), and same threaded connection has threaded rod (6) in second screw hole (43).
6. A split common-mode inductor according to claim 2, wherein: a plurality of first grooves (11) are formed in the surface of the circuit board (1), the bottom of the first shell (3) is embedded into the first grooves (11), a plurality of second grooves (12) are formed in the surface of the circuit board (1), and the bottom of the second shell (4) is embedded into the second grooves (12).
7. The separated common-mode inductor according to claim 6, wherein: the bottom of the first shell (3) is fixedly provided with a first welding column (34), and the bottom of the second shell (4) is fixedly provided with a second welding column (44).
8. The separated common-mode inductor according to claim 7, wherein: first logical groove (13) have all been seted up in the both sides of first recess (11) to circuit board (1) upper surface, first logical groove (13) are linked together with first recess (11), and first logical groove (13) align with first welding post (34), second through groove (14) have all been seted up in the both sides of second recess (12) to circuit board (1) upper surface, second through groove (14) are linked together with second recess (12), and second through groove (14) align with second welding post (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333958.5U CN218182017U (en) | 2022-09-01 | 2022-09-01 | Separated common mode inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222333958.5U CN218182017U (en) | 2022-09-01 | 2022-09-01 | Separated common mode inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218182017U true CN218182017U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222333958.5U Active CN218182017U (en) | 2022-09-01 | 2022-09-01 | Separated common mode inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218182017U (en) |
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2022
- 2022-09-01 CN CN202222333958.5U patent/CN218182017U/en active Active
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