CN204270790U - A kind of common mode choke - Google Patents
A kind of common mode choke Download PDFInfo
- Publication number
- CN204270790U CN204270790U CN201420780408.0U CN201420780408U CN204270790U CN 204270790 U CN204270790 U CN 204270790U CN 201420780408 U CN201420780408 U CN 201420780408U CN 204270790 U CN204270790 U CN 204270790U
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- China
- Prior art keywords
- coil
- spare
- tertiary
- magnetic core
- common mode
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Abstract
The utility model discloses a kind of common mode choke, comprise shell, the magnetic core being positioned at shell and the coil be wound on magnetic core, described shell is provided with fairlead, described coil comprises the first coil, second coil and identical with the first coil turn but that coiling direction is contrary tertiary coil, the second described coil comprises and second spare coil that coiling direction identical and with the tertiary coil number of turn identical and that coiling direction identical first spare coil identical with the first coil turn, the first described coil and the two ends correspondence of the second spare coil lay respectively in two fairleads, the two ends correspondence of described tertiary coil and the first spare coil lays respectively in two fairleads, when coil goes wrong, for ease of maintenaince replace, do not need to remove whole choke.
Description
Technical field
The utility model relates to choke field, particularly, relates to a kind of common mode choke.
Background technology
Choke and inductance coil, it has the effect suppressing curent change, and inductance this effect larger is more obvious, and the inhibition of this effect to circuit is referred to as induction reactance, and the size of induction reactance is relevant with the size of the operating frequency of inductance and itself inductance.
Existing choke its comprise two coils, in use, when the arbitrary coil of inductance goes wrong, need replace whole inductance, because inductance is fixing on circuit boards, very inconvenient during replacement, not only need inductance to take off and needs are fixed new inductance, and connect.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of common mode choke, when coil goes wrong, for ease of maintenaince replaces.
The technical scheme in the invention for solving the above technical problem is:
A kind of common mode choke, comprise shell, the magnetic core being positioned at shell and the coil be wound on magnetic core, described shell is provided with fairlead, described coil comprises the first coil, second coil and identical with the first coil turn but that coiling direction is contrary tertiary coil, the second described coil comprises and second spare coil that coiling direction identical and with the tertiary coil number of turn identical and that coiling direction identical first spare coil identical with the first coil turn, the first described coil and the two ends correspondence of the second spare coil lay respectively in two fairleads, the two ends correspondence of described tertiary coil and the first spare coil lays respectively in two fairleads.
The utility model improves on the basis of existing technology, one, and the second coil is set to spare coil, going wrong, changing spare coil when connecting coil in circuit; Its two: each end of the spare coil of the second coil is laid respectively in different fairleads from each end of the first coil, tertiary coil, when replacing coil, directly the coil connectors in each fairlead is carried out replacing, avoid the corresponding termination finding corresponding coil.The first described coil and the two ends correspondence of the second spare coil lay respectively in two fairleads, namely the two ends of the first coil lay respectively in two fairleads, the two ends of the second spare coil lay respectively in these two fairleads, namely shell are arranged 4 fairleads.
As preferably, in order to strengthen the stability of choke, the first described coil, between the second coil and tertiary coil, be provided with partition.
Further, in order to simplified structure, described partition is " people " font.
As preferably, in order to prevent puncturing between magnetic core and coil when moment overvoltage, between described magnetic core and coil, be provided with insulating barrier.
To sum up, the beneficial effects of the utility model are:
1, the utility model arranges the second coil on magnetic core, second coil comprises the first spare coil and the second spare coil, when the first coil or tertiary coil go wrong, only need replace the coil gone wrong utilizing the first spare coil or the second spare coil, avoid the dismounting of inductance and reinstall, convenient operation, easily replaces.
2, the two ends correspondence of the first coil of the present utility model and the second spare coil lays respectively in two fairleads, the two ends correspondence of tertiary coil and the first spare coil lays respectively in two fairleads, when replacing coil, only need carry out replacement casing to the coil end of two in each fairlead, avoid the termination finding corresponding coil, simple to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark and corresponding parts title in accompanying drawing: 1, magnetic core; 21, the first coil; 22, the second coil; 221, the first spare coil; 222, the second spare coil; 23, tertiary coil; 3, partition; 4, shell; 41, fairlead.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
Embodiment 1:
A kind of common mode choke as shown in Figure 1, comprise shell 4, the magnetic core 1 being positioned at shell 4 and the coil be wound on magnetic core 1, described shell 4 is provided with fairlead 41, described coil comprises the first coil 21, second coil 22 and but tertiary coil 23 that coiling direction contrary identical with first coil 21 number of turn, the second described coil 22 comprises and second spare coil 222 that coiling direction identical and with tertiary coil 23 number of turn identical and that coiling direction identical first spare coil 221 identical with first coil 21 number of turn, the first described coil 21 and the two ends correspondence of the second spare coil 222 lay respectively in two fairleads 41, described tertiary coil 23 and the two ends correspondence of the first spare coil 221 lay respectively in two fairleads 41.Magnetic core can adopt cross section to be the circular magnetic core of rectangle.
The present embodiment arranges the second coil on magnetic core, second coil comprises the first spare coil and the second spare coil, when the first coil or tertiary coil go wrong, only need carry out replacement casing to the coil end of two in each fairlead, avoid the termination finding corresponding coil, also avoid the dismounting of inductance simultaneously and reinstall, convenient operation, easily replacing.
Embodiment 2:
A kind of common mode choke as shown in Figure 1, the present embodiment is optimized on the basis of above-described embodiment, is provided with partition 3 between the first namely described coil 21, second coil 22 and tertiary coil 23.
Described partition 3 is " people " font.
Embodiment 3:
A kind of common mode choke as shown in Figure 1, in order to prevent puncturing between magnetic core and coil when moment overvoltage, the present embodiment is optimized on the basis of above-described embodiment, is provided with insulating barrier between namely described magnetic core 1 and coil.
As mentioned above, the utility model can be realized preferably.
Claims (4)
1. a common mode choke, comprise shell (4), the magnetic core (1) being positioned at shell (4) and the coil be wound on magnetic core (1), it is characterized in that: described shell (4) is provided with fairlead (41), described coil comprises the first coil (21), second coil (22) and but tertiary coil (23) that coiling direction contrary identical with the first coil (21) number of turn, described the second coil (22) comprises and second spare coil (222) that coiling direction identical identical with the first coil (21) number of turn and and first spare coil (221) that coiling direction identical identical with tertiary coil (23) number of turn, described the first coil (21) and the two ends correspondence of the second spare coil (222) lay respectively in two fairleads (41), described tertiary coil (23) and the two ends correspondence of the first spare coil (221) lay respectively in two fairleads (41).
2. a kind of common mode choke according to claim 1, is characterized in that: described the first coil (21), be provided with partition (3) between the second coil (22) and tertiary coil (23).
3. a kind of common mode choke according to claim 2, is characterized in that: described partition (3) is " people " font.
4. a kind of common mode choke according to claim 1, is characterized in that: be provided with insulating barrier between described magnetic core (1) and coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780408.0U CN204270790U (en) | 2014-12-12 | 2014-12-12 | A kind of common mode choke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420780408.0U CN204270790U (en) | 2014-12-12 | 2014-12-12 | A kind of common mode choke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270790U true CN204270790U (en) | 2015-04-15 |
Family
ID=52805643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420780408.0U Expired - Fee Related CN204270790U (en) | 2014-12-12 | 2014-12-12 | A kind of common mode choke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270790U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376970A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode choke |
-
2014
- 2014-12-12 CN CN201420780408.0U patent/CN204270790U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376970A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode choke |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20171212 |