CN212781189U - Coil support and coil for measuring magnetic performance - Google Patents
Coil support and coil for measuring magnetic performance Download PDFInfo
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- CN212781189U CN212781189U CN202021598924.3U CN202021598924U CN212781189U CN 212781189 U CN212781189 U CN 212781189U CN 202021598924 U CN202021598924 U CN 202021598924U CN 212781189 U CN212781189 U CN 212781189U
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Abstract
The application relates to a coil support and a coil for measuring magnetic performance. The coil support comprises a first framework, a second framework and a wire board, wherein the first framework comprises a first through hole, a first wire groove and a first wire groove; the shape of the outer side wall corresponds to that of the first through hole, the second framework comprises a second through hole and a second wire groove, and the second framework is arranged in the first through hole; the line board comprises a framework groove and a first strip-shaped groove which are communicated, the first strip-shaped groove extends to one side wall of the line board, a third through hole corresponding to the second through hole is formed in the bottom surface of the framework groove, the first framework is arranged in the framework groove, and the first strip-shaped groove corresponds to the first wire groove. The coil for measuring the magnetic property is not easy to damage, can be used in a high-temperature test environment, and is simple in structure and convenient to manufacture.
Description
Technical Field
The application relates to the field of magnetic performance test equipment, in particular to a coil support and a coil for measuring magnetic performance.
Background
For permanent magnetic materials, it is necessary to accurately measure the remanence BrCoercive force HCBIntrinsic coercive force HCJSum maximum energy product (BH)maxFor the constant magnetic property parameters, a B-H (J-H) hysteresis loop measuring device is generally adopted. In measurement, particularly in measurement of magnetic properties of a permanent magnet under high temperature conditions, a measuring coil is required to measure the magnetic polarization strength J and the applied magnetic field strength H of a sample, respectively.
The measurement coils include a J-coil (measuring magnetic polarization) and an H-coil (measuring applied magnetic field strength). The J coil is composed of two winding groups of N1 and N3 which have different numbers of turns and are opposite in winding direction and are respectively arranged in a pair of concentric circular wire slots. The same H coil is composed of two winding groups of circles N2 and N4 with different numbers of turns, and the winding directions of the two winding groups are opposite. N1 and N2 are wound in the same circular wire groove, N3 and N4 are wound in the other concentric circular wire groove, and the two circular wire grooves are provided with central holes. During measurement, a magnetized permanent magnet sample is placed on the surface of the central part of the lower pole head of the electromagnet along the magnetizing direction, then the central hole of the measuring coil is sleeved on the sample, the upper pole head of the electromagnet moves downwards, and the surface of the upper pole head is locked when the sample is contacted with the upper surface to measure.
During measurement, due to the fact that the polarities of the upper pole head and the lower pole head of the electromagnet are opposite, the generated suction force is very large, the positions of the upper pole head and the lower pole head can move slightly along with the gradual increase of the intensity of an applied magnetic field, and therefore a measurement sample in the middle of the upper pole head and the lower pole head can be damaged due to the fact that the upper pole head and the lower pole head are squeezed. If the height of the measuring coil is the same as the height of the measuring sample, the measuring coil may be damaged at the same time. Therefore, the thickness of the coil is lower than the height of the sample in the direction of orientation. For a permanent magnet sample with a small size in the orientation direction (less than 3 mm), especially when measuring a high-temperature B-H hysteresis loop, the thickness of the measuring coil needs to be lower than that of the sample in the orientation direction, namely the thickness of the measuring coil needs to be smaller (less than 2.5 mm), and the narrow coil thickness direction makes the winding on the coil material difficult to prepare.
SUMMERY OF THE UTILITY MODEL
Based on this, this application provides a coil support and measures coil of magnetic property, and coil support simple structure, the preparation of being convenient for is not fragile.
One embodiment of the present application provides a coil support, including: the first framework comprises a first through hole arranged along the axial direction, a first wire groove arranged on the outer side wall and a first wire groove arranged on the first end surface of the first framework, and the first wire groove extends to the first through hole from the outer side wall of the first framework and is communicated with the first wire groove; the shape of the outer side wall corresponds to that of the first through hole, the second framework comprises a second through hole arranged along the axial direction and a second wire groove arranged on the outer side wall, and the second framework is arranged in the first through hole; the wire plate comprises a framework groove and a first strip-shaped groove which are communicated, the first strip-shaped groove extends to one side wall of the wire plate, a third through hole corresponding to the second through hole is formed in the bottom surface of the framework groove, the first framework is arranged in the framework groove, and the first strip-shaped groove corresponds to the first wire guide groove.
According to some embodiments of the present application, set up first bellying on the lateral wall of first skeleton, an terminal surface of first bellying with the second terminal surface parallel and level of first skeleton, first bellying set up in the first bar groove of line board.
According to some embodiments of the present application, set up concave type portion on the second terminal surface of first skeleton, concave type portion intercommunication first through-hole, set up the second bellying on the lateral wall of second skeleton, protruding one terminal surface of second with the second terminal surface parallel and level of second skeleton, the second bellying set up in the concave type portion.
According to some embodiments of the present application, the first frame includes a second wire groove disposed on a first end surface of the first frame, the second wire groove extending from an outer sidewall of the first frame to the first through hole and communicating with the first wire groove; the second framework comprises a third wire groove and a fourth wire groove which are arranged on the first end surface of the second framework, and the third wire groove and the fourth wire groove both extend from the outer side wall of the second framework to the second through hole and are communicated with the second wire groove; the first wire groove corresponds to the third wire groove, and the second wire groove corresponds to the fourth wire groove.
According to some embodiments of the application, set up first locating hole on the first skeleton, set up the second locating hole on the second skeleton, set up on the line board respectively with the protruding cylinder that first locating hole and second locating hole correspond.
According to some embodiments of the application, the coil support still includes the handle, the handle includes second bar groove and the interface groove of intercommunication, the second bar groove extends to one side of handle, the interface groove extends to the opposite side of handle, the line board is connected the handle, first bar groove corresponds second bar groove.
According to some embodiments of the present application, the connection of the handle the line board is provided with a connection platform on one side, and the line board is provided with the connection platform.
According to some embodiments of the present application, the coil support further comprises a handle cover plate for covering the handle.
One embodiment of the present application provides a coil for measuring magnetic properties, comprising: the coil support as described above; n1 winding groups and N2 winding groups, which are positioned in the second wire slot; n3 winding groups and N4 winding groups are positioned in the first wire slot.
According to some embodiments of the application, the coil for measuring magnetic energy further comprises: and the interface is arranged in the interface slot of the handle and is used for connecting and forming the ends of the measuring wires of the N1 winding group, the N2 winding group, the N3 winding group and the N4 winding group.
According to the coil support and the coil for measuring the magnetic performance, the second framework is arranged in the first through hole of the first framework, and the first framework is arranged in the framework groove of the line board, so that the structure is simple, and the preparation is convenient; the first wire slot and the second wire slot are convenient for winding the coil; first skeleton, second skeleton and line board can select the material that bearing capacity is stronger under the high temperature, guarantee that coil support is not fragile, life under the extension high temperature.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.
FIG. 1 is a schematic view of a coil support according to an embodiment of the present application;
FIG. 2 is an exploded view of a coil support according to an embodiment of the present application;
FIG. 3 is a first schematic diagram of a first frame according to an embodiment of the present disclosure;
FIG. 4 is a second schematic view of a first frame according to an embodiment of the present disclosure;
FIG. 5 is a first schematic view of a second frame according to an embodiment of the present disclosure;
FIG. 6 is a second schematic illustration of a second frame according to an embodiment of the present application;
figure 7 is a schematic view of a line board of an embodiment of the present application;
FIG. 8 is a schematic view of a handle according to an embodiment of the present application;
FIG. 9 is a schematic view of a handle cover according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1
As shown in fig. 1 and 2, embodiments of the present application provide a coil support. The coil support includes a first bobbin 1, a second bobbin 2, and a wire plate 3. The coils are wound around the first bobbin 1 and the second bobbin 2, respectively.
As shown in fig. 3 and 4, in the present embodiment, the first frame 1 is circular, and the first frame 1 may be provided in other shapes as needed. The center of the first framework 1 is provided with a first through hole 11 along the axial direction. The outer side wall of the first framework 1 is provided with a first wire slot 12 for winding. The first framework 1 comprises a first end face 1a and a second end face 1b which are opposite, wherein a first wire groove 13 and a second wire groove 14 are arranged on the first framework 1. First wire casing 13 and second wire casing 14 extend to first through-hole 11 by the lateral wall of first skeleton 1, and first wire casing 13 and second wire casing 14 all communicate with first wire casing 11 for measuring line accessible first wire casing 13 or second wire casing 14 penetrate or wear out first wire casing 11. Alternatively, the groove wall on the second end surface 1b side of the first wire groove 13 is higher than the groove wall on the first end surface 1a side.
As shown in fig. 5 and 6, the shape of the outer sidewall of the second bobbin 2 corresponds to the shape of the first through hole 11 so that the second bobbin 2 can be fitted into the first through hole 11. The second bobbin 2 includes a second through hole 21 provided in the axial direction and a second wire groove 22 provided in the outer sidewall, the second wire groove 22 being used for winding a wire. The shape of the second through hole 21 may be a circular hole or a square hole, which is not limited in this application. The second framework comprises a first end face 2a and a second end face 2b which are opposite. The first end surface 2a of the second frame is provided with a third wire groove 23 and a fourth wire groove 24. The third wire groove 23 and the fourth wire groove 24 each extend from the outer side wall of the second bobbin 2 toward the second through hole 21, and communicate with the second wire groove 22. Whether the third wire groove 23 and the fourth wire groove 24 communicate with the second through hole 21 or not may be set as desired, and in this embodiment, the third wire groove 23 and the fourth wire groove 24 communicate with the second through hole 21. The second frame 2 is disposed in the first through hole 11, the first wire groove 13 corresponds to the third wire groove 23, and the second wire groove 14 corresponds to the fourth wire groove 24. By the cooperation of the individual wire guides, the measuring wire can be threaded from the first wire guide 12 into the second wire guide 22 or from the second wire guide 22 into the first wire guide 12. Alternatively, the groove wall on the second end face 2b side of the second linear groove 22 is higher than the groove wall on the first end face 2a side.
As shown in fig. 7, the cord plate 3 is a rectangular flat plate, and a frame groove 31 and a first bar-shaped groove 32 are provided on a first end surface, and the frame groove 31 communicates with the first bar-shaped groove 32. The first linear groove 32 extends to a side wall of the wire plate 3. The bottom surface of the frame groove 31 is provided with a third through hole 33 corresponding to the second through hole 21. The depth of the framework groove 31 is equal to the thickness of the first framework 1 and the second framework 2, the first framework 1 is arranged in the framework groove 31, and the first strip-shaped groove 32 corresponds to the first wire groove 13, so that the measuring wire sequentially passes through the first strip-shaped groove 32 and the first wire groove 13 and enters the first wire groove 12. When the first frame is loaded into the frame groove 31, the second end face 1b of the first frame and the second end face 2b of the second frame face upward.
The coil support of this application simple structure, the coil winding of being convenient for. Two measuring lines can be arranged according to the requirement. The first measuring line sequentially passes through the first linear groove 32, the first wire groove 13 and the third wire groove 23, enters the second wire groove 22, is wound to form an N1 winding group, then enters the first wire groove 12 through the third wire groove 23 and the first wire groove 13 to form an N3 winding group, and then enters the first linear groove 32 after passing through the first wire groove 13. The winding directions of the N1 winding group and the N3 winding group are opposite, and a J coil is formed. The second measuring line sequentially passes through the first linear groove 32, the first wire groove 13 and the third wire groove 23, enters the second wire groove 22, is wound to form an N2 winding group, then enters the first wire groove 12 through the third wire groove 23 and the first wire groove 13, is wound to form an N4 winding group, and then enters the first linear groove 32 after passing through the first wire groove 13. The winding directions of the N2 winding group and the N4 winding group are opposite. When the sample is subjected to measurement of magnetic properties, the sample is placed in the second through hole 21, forming an H-coil. The coil support, the J coil and the H coil form a coil for measuring magnetic performance.
First skeleton 1, second skeleton 2 and line board 3 thickness set up according to actual demand, and in this embodiment, the thickness of first skeleton 1 and second skeleton 2 is 1.6mm, and the thickness of line board 3 is 2mm, can satisfy the measurement requirement of the less (below 3 mm) permanent magnetism sample of orientation direction size.
First skeleton 1, second skeleton 2 and line board 3 optional use bearing capacity stronger material, coil support is not fragile. In this embodiment, the first frame 1 and the second frame 2 are made of the same material, and are made of a non-magnetic high-strength metal material or an inorganic material. The wire board 3 is made of glass fiber board type non-magnetic inorganic non-metallic material or metal material.
According to an optional technical scheme of this application, set up first boss 15 on the lateral wall of first skeleton 1, first boss 15 is by lateral wall radial extension. One end face of the first protruding portion 15 is flush with the second end face 1b of the first bobbin. The first protrusion 15 is opposite to the first wire groove 13. When the first frame 1 is arranged in the frame groove 31, the first protruding portion 15 is arranged in the first strip-shaped groove 32 of the line board, and plays a role in positioning the first frame 1.
According to an optional technical scheme of the present application, the second end surface 1b of the first framework is provided with a concave portion 16, and the concave portion 16 is arc-shaped and is communicated with the first through hole 11. In this embodiment, the concave portion 16 is located above the first convex portion 15. The outer side wall of the second framework 2 is provided with a second convex part 25, and the second convex part 25 is arc-shaped and corresponds to the concave part 16. One end face of the second protrusion 25 is flush with the second end face 2b of the second bobbin. The second protrusion 25 is opposite to the third wire groove 23. When the second frame 2 is installed in the first through hole 11, the second protruding portion 25 is disposed in the concave portion 16, so as to position the second frame 2.
Alternatively, the center line of the first wire groove 13 and the center line of the second wire groove 14 are located on the same diameter of the first bobbin 1, which facilitates the processing of the first wire groove 13 and the second wire groove 14. The center line of the third wire groove 23 and the center line of the fourth wire groove 24 are located on the same diameter of the second framework 2, which facilitates the processing of the third wire groove 23 and the fourth wire groove 24.
According to an optional technical scheme of the present application, the first frame 1 is provided with two first positioning holes 17, in this embodiment, the number of the first positioning holes 17 is two. The second frame 2 is provided with second positioning holes 26, and in this embodiment, the number of the second positioning holes 26 is two. A boss cylinder 311 corresponding to the first positioning hole 17 and a boss cylinder 312 corresponding to the second positioning hole 26 are provided on the bottom surface of the skeleton groove 31 of the line plate 3. Through the cooperation of locating hole and protruding cylinder, utilize the screw to fix first skeleton 1 and second skeleton 2 on line board 3.
As shown in fig. 8, according to an alternative embodiment of the present application, the coil support further comprises a handle 4. The handle 4 includes a second strip groove 41 and an interface groove 42 provided at the end surface. The second strip groove 41 and the interface groove 42 are in communication with each other, wherein the interface groove 42 houses the interface. The second strip-shaped slot 41 extends to one side of the handle 4 and the interface slot 42 extends to the other side of the handle 4. The wire plate 3 is fixedly connected with the handle 4, and the first strip-shaped groove 32 corresponds to the second strip-shaped groove 41. The measuring line passes through the first strip-shaped slot 32 and the second strip-shaped slot 41 to interface with the interface slot 42. The interface is used for being connected with external detection signal processing equipment. The arrangement of the handle facilitates the use of the coil for measuring the magnetic performance by an operator. The handle 4 is made of glass fiber board non-magnetic inorganic non-metallic material or metal material.
In this embodiment, the measuring lines on the line board 3 and the handle 4 are sealed by high temperature resistant glue.
Optionally, the side of the handle 4 for connecting the patch panel 3 is provided with a connection platform 43. The line board 3 is provided with a plurality of through holes 34, and the line board 3 is fixedly arranged on the connecting platform 43 through the through holes 34.
As shown in fig. 9, according to an alternative embodiment of the present application, the coil support further includes a handle cover 5. The handle cover 5 is used for covering the handle 4 and protecting the interface and the measuring line installed in the handle 4. Set up a plurality of first connecting holes 44 on the handle 4, set up a plurality of second connecting holes 51 that correspond with first connecting hole 44 on the handle apron 5, through first connecting hole 44 and second connecting hole 51, fixed connection is realized to handle 4 and handle apron 5. Optionally, two through holes 34 of line board 3 correspond to two second connecting holes 51 on one side of handle cover plate 5 close to line board 3, respectively, and the screw passes through second connecting hole 51, through hole 34 and is connected with first connecting hole 44 on platform 43, realizing the connection of line board 3, handle 4 and handle cover plate 5.
The first wire groove 13 and the second wire groove 14 of the present embodiment may be used to measure the diameter of the first wire groove 11 and to calculate the number of coil turns and the diameter of the N1 and N2 winding groups in the first wire groove 11. The third wire groove 23 and the fourth wire groove 24 may be used to measure the diameter of the second wire groove 21 and to calculate the number of coil turns and the diameter of the N3 and N4 winding groups in the second wire groove 21. The number of turns of the N1, N2, N3, N4 winding groups and the measured wire diameter may be set as desired.
According to an optional technical solution of the present application, the coil for measuring magnetic energy further includes: an interface. In this embodiment, the interface is a USB interface and is disposed in the interface slot 42 of the handle 4. Two ends of the first measuring line and two ends of the second measuring line are respectively connected with four connecting points of the interface. The interface is arranged to facilitate connection of the coil for measuring magnetic properties with the detection signal processing device.
Example 2
The present application further provides another coil support, the coil support of this embodiment has a structure substantially the same as that of the coil support described in embodiment 1, except that:
when the coil support of this embodiment is assembled into a coil for measuring magnetic properties:
the first measuring wire is wound in the second wire slot 21 to form an N1 winding group;
the second measuring wire is wound in the second wire slot 21 and positioned outside the N1 winding group to form an N2 winding group;
the third measuring wire enters the first wire groove 11 through the first wire groove 13 for winding to form an N3 winding group;
the fourth measuring wire enters the first wire groove 11 winding through the first wire groove 13 and is positioned outside the N3 winding group to form an N4 winding group.
One end of the first measurement line and one end of the third measurement line are connected together at an interface such that the N1 and N3 windings are in opposite directions, and similarly one end of the second measurement line and one end of the fourth measurement line are connected together at an interface such that the N2 and N4 windings are in opposite directions.
Example 3
The present application further provides another coil support, the coil support of this embodiment has a structure substantially the same as that of the coil support described in embodiment 2, except that the first bobbin 1 of this embodiment is not provided with the second wire groove, and the second bobbin 2 is not provided with the third wire groove and the fourth wire groove.
When the coil support of this embodiment is assembled into a coil for measuring magnetic properties:
the first measuring wire is wound in the second wire slot 21 to form an N1 winding group;
the second measuring wire is wound in the second wire slot 21 and positioned outside the N1 winding group to form an N2 winding group;
the third measuring wire enters the first wire groove 11 through the first wire groove 13 for winding to form an N3 winding group;
the fourth measuring wire enters the first wire groove 11 winding through the first wire groove 13 and is positioned outside the N3 winding group to form an N4 winding group.
One end of the first measurement line and one end of the third measurement line are connected together at an interface such that the N1 and N3 windings are in opposite directions, and similarly one end of the second measurement line and one end of the fourth measurement line are connected together at an interface such that the N2 and N4 windings are in opposite directions.
The coil for measuring the magnetic performance has the advantages that the coil support is simple in structure, the coil is convenient to wind, and high-temperature test of the magnetic performance is facilitated. First skeleton, second skeleton and line board can select the material that bearing capacity is stronger, and coil support is not fragile.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, a person skilled in the art should, according to the idea of the present application, change or modify the embodiments and applications of the present application based on the scope of the present application. In view of the above, the description should not be taken as limiting the application.
Claims (10)
1. A coil support, comprising:
the first framework comprises a first through hole arranged along the axial direction, a first wire groove arranged on the outer side wall and a first wire groove arranged on the first end surface of the first framework, and the first wire groove extends to the first through hole from the outer side wall of the first framework and is communicated with the first wire groove;
the shape of the outer side wall corresponds to that of the first through hole, and the second framework comprises a second through hole arranged along the axial direction and a second wire groove arranged on the outer side wall and is arranged in the first through hole;
the wire plate comprises a framework groove and a first strip-shaped groove which are communicated, the first strip-shaped groove extends to one side wall of the wire plate, a third through hole corresponding to the second through hole is formed in the bottom surface of the framework groove, the first framework is arranged in the framework groove, and the first strip-shaped groove corresponds to the first wire guide groove.
2. The coil support according to claim 1, wherein a first protrusion is provided on an outer side wall of the first bobbin, an end surface of the first protrusion is flush with a second end surface of the first bobbin, and the first protrusion is provided in the first linear groove of the wire plate.
3. The coil support according to claim 1, wherein a concave portion is disposed on the second end surface of the first bobbin, the concave portion is connected to the first through hole, a second protrusion is disposed on the outer sidewall of the second bobbin, an end surface of the second protrusion is flush with the second end surface of the second bobbin, and the second protrusion is disposed in the concave portion.
4. The coil support according to claim 1, wherein the first frame includes a second wire groove disposed on the first end surface of the first frame, the second wire groove extending from the outer sidewall of the first frame to the first through hole and communicating with the first wire groove;
the second framework comprises a third wire groove and a fourth wire groove which are arranged on the first end surface of the second framework, and the third wire groove and the fourth wire groove both extend from the outer side wall of the second framework to the second through hole and are communicated with the second wire groove;
the first wire groove corresponds to the third wire groove, and the second wire groove corresponds to the fourth wire groove.
5. The coil support according to claim 1, wherein the first frame is provided with a first positioning hole, the second frame is provided with a second positioning hole, and the wire plate is provided with a protruding cylinder corresponding to the first positioning hole and the second positioning hole, respectively.
6. The coil support of claim 1, further comprising a handle,
the handle comprises a second strip-shaped groove and an interface groove which are communicated, the second strip-shaped groove extends to one side of the handle, the interface groove extends to the other side of the handle, the line board is connected with the handle, and the first strip-shaped groove corresponds to the second strip-shaped groove.
7. The coil support according to claim 6, wherein a connecting platform is provided on a side of the handle to which the wire plate is connected, and the wire plate is provided on the connecting platform.
8. The coil support of claim 6, further comprising a handle cover for covering the handle.
9. A coil for measuring magnetic properties, comprising:
a coil support according to any one of claims 1 to 8;
n1 winding groups and N2 winding groups, which are positioned in the second wire slot;
n3 winding groups and N4 winding groups are positioned in the first wire slot.
10. The coil for measuring magnetic energy of claim 9, further comprising:
and the interface is arranged in the interface slot of the handle and is used for connecting and forming the ends of the measuring wires of the N1 winding group, the N2 winding group, the N3 winding group and the N4 winding group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598924.3U CN212781189U (en) | 2020-08-04 | 2020-08-04 | Coil support and coil for measuring magnetic performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598924.3U CN212781189U (en) | 2020-08-04 | 2020-08-04 | Coil support and coil for measuring magnetic performance |
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| Publication Number | Publication Date |
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| CN212781189U true CN212781189U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021598924.3U Active CN212781189U (en) | 2020-08-04 | 2020-08-04 | Coil support and coil for measuring magnetic performance |
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| CN (1) | CN212781189U (en) |
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