CN212136229U - Mutual inductor - Google Patents
Mutual inductor Download PDFInfo
- Publication number
- CN212136229U CN212136229U CN202020830012.8U CN202020830012U CN212136229U CN 212136229 U CN212136229 U CN 212136229U CN 202020830012 U CN202020830012 U CN 202020830012U CN 212136229 U CN212136229 U CN 212136229U
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- magnetic field
- induction coil
- mutual inductor
- mounting groove
- casing
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Abstract
The utility model discloses a mutual inductor relates to current detection, and it is mainly solved that there is unbalanced technical problem in magnetic field in the current mutual inductor, the mutual inductor includes the casing, the middle part of casing inner chamber is equipped with the reference column of coaxial arrangement, casing inner chamber bottom is equipped with the magnetic field balance boss, the peripheral cover of reference column is equipped with the connection the first induction coil of magnetic field balance boss, it responds the coil to surround to be equipped with the second on the first induction coil, be equipped with the electric conductor that is used for connecting the detection wire of two interval arrangements in the reference column, two the one end protrusion of electric conductor in the reference column top, two the other end of electric conductor pastes tightly respectively the casing bottom extends to the outside. The utility model discloses a set up the magnetic field balance boss bottom the casing, made the magnetic core of first induction coil and the electric conductor of casing bottom pull open the distance, reduce magnetic field interference, can improve the equilibrium in magnetic field, improve and detect the precision.
Description
Technical Field
The utility model relates to a current detection, more specifically say, it relates to a mutual inductor.
Background
The current transformer is an instrument for measuring primary side heavy current into secondary side small current according to the electromagnetic induction principle, so as to realize standardization and miniaturization of measuring instruments, protective equipment and automatic control equipment. At present, the phenomenon that the magnetic field of the current mutual inductance device is unbalanced due to the unreasonable structure of the current mutual inductance device is caused, and the detection precision is influenced by the unbalanced magnetic field.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a can improve magnetic field balance's mutual-inductor.
The technical scheme of the utility model is that: the utility model provides a mutual inductor, includes the casing, the middle part of casing inner chamber is equipped with the reference column of coaxial arrangement, casing inner chamber bottom is equipped with the magnetic field balance boss, the peripheral cover of reference column is equipped with the first induction coil of connecting the magnetic field balance boss, it responds the coil to surround to be equipped with the second on the first induction coil, be equipped with two interval arrangement in the reference column and be used for connecting the electric conductor that detects the wire, two the one end protrusion of electric conductor in the reference column top, two the other end of electric conductor pastes tightly respectively the casing bottom extends to the outside, one side of casing be equipped with respectively with two first terminals of first induction coil electric connection, with two second terminals of second induction coil electric connection.
As a further improvement, the number of the magnetic field balance bosses is at least 3, and the magnetic field balance bosses are uniformly arranged around the axis line of the shell.
Further, an insulating partition plate is arranged between the two electric conductors.
Furthermore, mounting holes are formed in the positioning columns, the two electric conductors are located on two sides of the mounting holes respectively, and grooves used for mounting the insulating partition plates are formed in the middle of the mounting holes.
Further, the shell is provided with a first mounting groove used for mounting the first binding post and a second mounting groove used for mounting the second binding post, and the first mounting groove and the second mounting groove are communicated with the inner cavity of the shell.
Further, be symmetrical structure between first mounting groove, the second mounting groove, first terminal, second terminal are installed respectively one side of first mounting groove and second mounting groove parallel and level.
Furthermore, the bottom of the shell is respectively provided with a positioning boss corresponding to the two electric conductors, and the positioning bosses are of a convex structure with a large root and a small top.
Furthermore, the other side of the shell is provided with two symmetrically arranged abdicating bosses.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does: the utility model discloses a set up the magnetic field balance boss bottom the casing, made the magnetic core in the first induction coil and the electric conductor of casing bottom pull open the distance, reduce magnetic field interference, can improve the equilibrium in magnetic field to improve and detect the precision.
Drawings
Fig. 1 is an exploded schematic view of the present invention;
fig. 2 is a schematic structural view of the housing of the present invention;
fig. 3 is a schematic structural diagram of the bottom of the middle housing of the present invention.
Wherein: the magnetic field induction type magnetic field induction.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, a mutual inductor comprises a housing 1, and a positioning column 2 coaxially arranged is arranged in the middle of an inner cavity of the housing 1. The bottom of the inner cavity of the shell 1 is provided with a magnetic field balance boss 3, the periphery of the positioning column 2 is sleeved with a first induction coil 4 connected with the magnetic field balance boss 3, and the first induction coil 4 is formed by winding a copper wire on a magnetic core. And a second induction coil 5 is arranged on the first induction coil 4 in a winding manner, namely the second induction coil 5 is formed by winding a copper wire on the first induction coil 4. Be equipped with two interval arrangements in the reference column 2 and be used for connecting the electric conductor 6 that detects the wire, electric conductor 6 is sheet structure, and the one end protrusion in reference column 2 top of two electric conductors 6, the other end of two electric conductors 6 pastes tight casing 1 bottom respectively and extends to the outside. One side of the shell 1 is respectively provided with two first binding posts 7 electrically connected with the first induction coil 4 and two second binding posts 8 electrically connected with the second induction coil 5, namely, two ends of the first induction coil 4 are respectively connected to the two first binding posts 7, two ends of the second induction coil 5 are respectively connected to the two second binding posts 8, and the first binding posts 7 and the second binding posts 8 are used for being inserted into welding holes on a circuit board. Through set up magnetic field balance boss 3 in casing 1 bottom, make the magnetic core in the first induction coil 4 and the electric conductor 6 of casing 1 bottom pull open the distance, reduce magnetic field interference, can improve the equilibrium in magnetic field to improve and detect the precision.
The number of the magnetic field balance bosses 3 is at least 3, and the magnetic field balance bosses 3 are uniformly arranged around the axial lead of the shell 1. The height of the magnetic field balance boss 3 can be set according to actual conditions, and in the embodiment, the height of the magnetic field balance boss 3 is 1-3 mm.
An insulating partition 9 is arranged between the two electric conductors 6. Be equipped with mounting hole 10 in the reference column 2, two electric conductors 6 are located the both sides of mounting hole 10 respectively, and the middle part of mounting hole 10 is equipped with the recess 11 that is used for installing insulating barrier 9.
The casing 1 is provided with a first mounting groove 12 for mounting the first binding post 7 and a second mounting groove 13 for mounting the second binding post 8, and the first mounting groove 12 and the second mounting groove 13 are both communicated with the inner cavity of the casing 1. The first installation groove 12 and the second installation groove 13 are in a symmetrical structure, and the first binding post 7 and the second binding post 8 are respectively installed on one side of the first installation groove 12 which is flush with the second installation groove 13. The both ends end of a thread of first induction coil 4 is connected respectively on two first terminals 7 through first mounting groove 12, and the both ends end of a thread of second induction coil 5 is connected respectively on two second terminals 8 through second mounting groove 13, when pouring insulating material toward casing 1 in, insulating material can cover the both ends end of a thread of first induction coil 4 and the both ends end of a thread of second induction coil 5.
The bottom of the shell 1 is respectively provided with a positioning boss 14 corresponding to the two electric conductors 6, and the positioning boss 14 is of a convex structure with a large root and a small top. The conductor 6 is provided with a positioning hole matched with the positioning boss 14. The positioning boss 14 is in interference fit with the positioning hole, and can play a role in fixing the conductor 6.
Two symmetrically arranged abdicating bosses 15 are arranged on the other side of the shell 1, so that the influence on the work of the mutual inductor caused by the fact that the distance between an element on the circuit board and the shell 1 is too small can be avoided.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (8)
1. The mutual inductor comprises a shell (1) and is characterized in that a positioning column (2) which is coaxially arranged is arranged in the middle of an inner cavity of the shell (1), a magnetic field balance boss (3) is arranged at the bottom of the inner cavity of the shell (1), a first induction coil (4) which is connected with the magnetic field balance boss (3) is sleeved on the periphery of the positioning column (2), a second induction coil (5) is arranged on the first induction coil (4) in an encircling manner, two electric conductors (6) which are arranged at intervals and used for connecting detection wires are arranged in the positioning column (2), one end of each electric conductor (6) protrudes out of the top of the positioning column (2), the other end of each electric conductor (6) is tightly attached to the bottom of the shell (1) and extends outwards, and two first binding posts (7) which are electrically connected with the first induction coil (4) are arranged on one side of the shell (1) respectively, And the two second binding posts (8) are electrically connected with the second induction coil (5).
2. A transformer according to claim 1, characterized in that the number of said magnetic field balancing projections (3) is at least 3, said magnetic field balancing projections (3) being evenly arranged around the axis of said housing (1).
3. A transformer according to claim 1, characterised in that an insulating barrier (9) is provided between the two conductors (6).
4. A mutual inductor according to claim 3, characterized in that a mounting hole (10) is provided in the positioning column (2), two of the electric conductors (6) are respectively located on two sides of the mounting hole (10), and a groove (11) for mounting the insulating partition (9) is provided in the middle of the mounting hole (10).
5. A mutual inductor according to claim 1, characterized in that the casing (1) is provided with a first mounting groove (12) for mounting the first terminal (7) and a second mounting groove (13) for mounting the second terminal (8), and the first mounting groove (12) and the second mounting groove (13) are communicated with the inner cavity of the casing (1).
6. A mutual inductor according to claim 5, characterized in that a symmetrical structure is arranged between the first mounting groove (12) and the second mounting groove (13), and the first binding post (7) and the second binding post (8) are respectively mounted on one side of the first mounting groove (12) which is flush with the second mounting groove (13).
7. The mutual inductor according to claim 1, wherein the bottom of the shell (1) is provided with positioning bosses (14) corresponding to the two electric conductors (6), and the positioning bosses (14) are of a convex structure with a large root and a small top.
8. Mutual inductor according to any one of claims 1-7, characterized in that the other side of the housing (1) is provided with two symmetrically arranged offset bosses (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830012.8U CN212136229U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830012.8U CN212136229U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212136229U true CN212136229U (en) | 2020-12-11 |
Family
ID=73669367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020830012.8U Active CN212136229U (en) | 2020-05-18 | 2020-05-18 | Mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212136229U (en) |
-
2020
- 2020-05-18 CN CN202020830012.8U patent/CN212136229U/en active Active
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