CN112505361A - Magnetic ring test coil shell - Google Patents
Magnetic ring test coil shell Download PDFInfo
- Publication number
- CN112505361A CN112505361A CN202011156782.XA CN202011156782A CN112505361A CN 112505361 A CN112505361 A CN 112505361A CN 202011156782 A CN202011156782 A CN 202011156782A CN 112505361 A CN112505361 A CN 112505361A
- Authority
- CN
- China
- Prior art keywords
- magnetic ring
- ring
- shell
- casing
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention discloses a magnetic ring test coil shell which comprises a combined shell body, wherein the combined shell body comprises an upper shell body and a lower shell body, the upper shell body and the lower shell body respectively comprise an inner ring and an outer ring, a bottom plate is arranged between the inner ring and the outer ring, a through hole is formed in the inner side of the inner ring, a coil assembly is arranged on the bottom plate, and the coil assembly comprises an inner joint part extending to the through hole and an outer joint part extending to the outside of the outer ring. The magnetic ring is attached to the coil assembly on the upper shell and the coil assembly on the lower shell, the coil assembly forms magnetic ring winding, so that quick winding is achieved, and winding disassembly can be completed only by taking the magnetic ring out of the combined shell after testing is completed, so that the magnetic ring testing efficiency is effectively improved.
Description
Technical Field
The invention relates to the technical field of magnetic ring testing, in particular to a magnetic ring testing coil shell.
Background
Nowadays, magnetic materials are more and more widely applied to electronic products, the requirements of production and test of the magnetic materials are more and more increased, and especially, the test of a magnetic ring is large in the amount of multiple tests of the products, the magnetic ring cannot be tested by using a coil prepared in advance, the coil can only be wound on the magnetic ring one circle by one circle and is tested at present, so that the workload of testers is large, and the test efficiency is low.
For example, the patent document "CN 104198822B" includes multiple single-frequency inductance test instruments, an upper die and a lower die, the upper die is provided with multiple conductive probes, the lower die is provided with conductive sheets, each single-frequency inductance test instrument includes two test wires, one of the test wires is connected with one of the conductive probes, and the other test wire is connected with one of the conductive sheets corresponding to the conductive probes. Although the vibration disc can realize magnetic ring test, each magnetic ring needs to be provided with a conductive probe and a conductive sheet again, and the test efficiency is low.
Disclosure of Invention
The invention discloses a magnetic ring test coil shell, aiming at the problems of complex assembly and disassembly of windings and low test efficiency in the prior art, a magnetic ring is directly arranged in a combined shell, the magnetic ring is attached to a coil assembly on an upper shell and a lower shell, the coil assembly forms magnetic ring windings, so that the rapid winding is realized, and the windings are disassembled only by taking the magnetic ring out of the combined shell after the test is finished, so that the magnetic ring test efficiency is effectively improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a magnetic ring test coil shell, includes combination formula casing, combination formula casing includes casing and lower casing, go up casing and casing down and all include inner ring and outer loop, be provided with the bottom plate between inner ring and the outer loop, the inner ring inboard is provided with the through-hole, be provided with coil assembly on the bottom plate, coil assembly includes the interior joint portion that extends to the through-hole and extends to the outer joint portion beyond the outer loop. The magnetic ring testing coil shell can be used for directly installing the magnetic ring in the lower shell and installing the upper shell at the top of the lower shell when testing the magnetic ring, and the magnetic ring is arranged on the bottom plate between the inner ring and the outer ring, so that the coil assembly covers the magnetic ring to form a winding structure. The coil shell can be repeatedly used, so that the test efficiency of the magnetic ring is improved, and the cost of enameled wire consumption is reduced.
Preferably, the coil assembly comprises a plurality of winding wires uniformly arranged on the bottom plate in a surrounding manner, each winding wire comprises a conductor and an insulating layer wrapped outside the conductor, two ends of each winding wire are respectively provided with an inner joint part and an outer joint part, and the conductors of the inner joint part and the outer joint part are exposed outside the insulating layer. The winding wire is made of the same material as that of a traditional magnetic ring test wire, and is different from the traditional magnetic ring test wire in that the winding wire has a special structure. The inner joint part of the winding wire extends into the inner ring, and the outer joint part extends out of the outer ring to form a conductive contact end which can be connected with an external testing instrument. After the upper shell and the lower shell are assembled with the matching body, the inner joint parts of the upper shell and the lower shell can be mutually abutted to form an inner joint end, and the outer joint parts are also mutually abutted to form an outer joint end.
Preferably, the outer annular wall opening of the upper shell is provided with a first concave-convex structure, the outer annular wall opening of the lower shell is provided with a second concave-convex structure matched with the first concave-convex structure, and the first concave-convex structure and the second concave-convex structure can be connected in an inserting mode. First concave-convex structure and second concave-convex structure are inserted each other and are closed, ensure to go up casing and lower casing stable connection.
Preferably, the winding wire comprises a section A arranged at the tail end of the inner joint part, the section A is attached to the outer wall of the inner ring, a section B attached to the upper surface of the bottom plate is arranged at the tail end of the section A, and a section C attached to the inner wall of the outer ring is arranged at the tail end of the section B. The A section, the B section and the C section of the winding wire on the lower shell are attached to the whole inner surface of the lower shell, so that a magnetic ring can be formed into a semi-enclosed structure by the winding wire of the lower shell after being arranged in the lower shell, and then the winding wire of the upper shell is matched to form a magnetic ring winding structure together.
Preferably, the conductor end portions of the inner joint portion and the outer joint portion are each provided with a notch structure, and the notch structure of the upper case is in contact with the notch structure of the lower case. The notch structure of the upper shell and the notch structure of the lower shell are symmetrically arranged, and the flat notch structures are convenient for mutual extrusion contact, so that the structural stability of the inner connecting end and the outer connecting end is ensured.
Preferably, the inner ring is uniformly provided with inner wire clamping grooves in an annular mode, the outer ring is provided with outer wire clamping grooves, the number of the inner wire clamping grooves corresponds to that of the outer wire clamping grooves, and the winding wires can be connected with the wire clamping grooves in a clamping mode. Furthermore, the inner wire clamping groove and the outer wire clamping groove are arranged in a staggered mode.
The inner wire clamping grooves and the outer wire clamping grooves are arranged in pairs, and each pair of inner wire clamping grooves and each pair of outer wire clamping grooves form a winding wire installation path. Therefore, the winding wires arranged inside the coil assembly are enabled to form a certain spiral angle through the inner wire clamping grooves and the outer wire clamping grooves which are arranged in a staggered mode, and the coil assembly with the spiral structure formed by the winding wires with the spiral angle can be matched with an external instrument to carry out efficient test on the magnetic ring.
Therefore, the invention has the following beneficial effects: (1) the coil assemblies on the upper shell and the lower shell are attached to the magnetic ring, the coil assemblies form magnetic ring winding, so that quick winding is realized, and the winding is disassembled only by taking the magnetic ring out of the combined shell after the test is finished, so that the test efficiency of the magnetic ring is effectively improved; (2) the inner joint part of the winding wire extends into the inner ring, the outer joint part extends out of the outer ring, and conductive contact ends which can be connected with an external testing instrument are respectively formed; (3) the notch structure of the upper shell and the notch structure of the lower shell are symmetrically arranged, and the flat notch structures are convenient for mutual extrusion contact, so that the stable structures of the inner connecting end and the outer connecting end are ensured; (4) the winding wires arranged inside the inner wire clamping grooves and the outer wire clamping grooves in the staggered arrangement form a certain spiral angle, and the coil assembly of the spiral structure formed by the winding wires with the spiral angle can be matched with an external instrument to carry out efficient test on the magnetic ring.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is an isometric view of the lower housing of fig. 1.
Fig. 3 is a top view of the lower housing of fig. 1.
Fig. 4 is a schematic structural diagram of the present invention.
In the figure: 100. the combined type shell comprises a combined type shell body, 1, an upper shell body, 11, an inner ring, 111, an inner wire clamping groove, 12, an outer ring, 121, an outer wire clamping groove, 13, a bottom plate, 14, a first concave-convex structure, 2, a lower shell body, 21, a second concave-convex structure, 3, a through hole, 4, a coil assembly, 41, an inner joint part, 42, an outer joint part, 43, a section A, 44, a section B, 45, a section C, 5, a winding wire, 51, a conductor, 52, an insulating layer, 6, a notch structure, 7, a main outer connecting end, 71, an inner connecting end, 72 and an outer connecting end.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1
As shown in fig. 1 and 4, a magnetic ring test coil casing includes a combined casing, the combined casing includes an upper casing and a lower casing, the upper casing and the lower casing both include an inner ring and an outer ring, a bottom plate is disposed between the inner ring and the outer ring, a through hole is disposed on the inner side of the inner ring, a coil assembly is disposed on the bottom plate, and the coil assembly includes an inner joint portion extending to the through hole and an outer joint portion extending to the outside of the outer ring. The magnetic ring testing coil shell can be used for directly installing the magnetic ring in the lower shell and installing the upper shell at the top of the lower shell when testing the magnetic ring, and the magnetic ring is arranged on the bottom plate between the inner ring and the outer ring, so that the coil assembly covers the magnetic ring to form a winding structure. The coil shell can be repeatedly used, so that the test efficiency of the magnetic ring is improved, and the cost of enameled wire consumption is reduced.
As shown in fig. 2 and 3, the coil assembly includes a plurality of winding wires uniformly annularly disposed on the bottom plate, the winding wires include conductors and insulating layers wrapped outside the conductors, two ends of the winding wires are respectively an inner joint portion and an outer joint portion, and the conductors of the inner joint portion and the outer joint portion are exposed outside the insulating layers. The winding wire comprises a section A arranged at the tail end of the inner joint part, the section A is attached to the outer wall of the inner ring, a section B attached to the upper surface of the bottom plate is arranged at the tail end of the section A, and a section C attached to the inner wall of the outer ring is arranged at the tail end of the section B. In this embodiment, the C-section tail of the upper housing extends outward to form a longer wire harness, and correspondingly, the C-section tail of the lower housing extends outward to form a longer wire harness. The ends of the two longer wire harnesses are provided with outer joint parts and are spliced to form a main outer connecting end, and the magnetic ring test coil shell is connected with a magnetic ring test instrument through the main outer connecting end.
The winding wire is made of the same material as that of a traditional magnetic ring test wire, and is different from the traditional magnetic ring test wire in that the winding wire has a special structure. The inner joint part of the winding wire extends into the inner ring, and the outer joint part extends out of the outer ring to form a conductive contact end which can be connected with an external testing instrument. After the upper shell and the lower shell are assembled with the matching body, the inner joint parts of the upper shell and the lower shell can be mutually abutted to form an inner joint end, and the outer joint parts are also mutually abutted to form an outer joint end. The A section, the B section and the C section of the winding wire on the lower shell are attached to the whole inner surface of the lower shell, so that a magnetic ring can be formed into a semi-enclosed structure by the winding wire of the lower shell after being arranged in the lower shell, and then the winding wire of the upper shell is matched to form a magnetic ring winding structure together.
The outer annular wall opening of the upper shell is provided with a first concave-convex structure, the outer annular wall opening of the lower shell is provided with a second concave-convex structure adaptive to the first concave-convex structure, and the first concave-convex structure and the second concave-convex structure can be connected in a plugging mode. First concave-convex structure and second concave-convex structure are inserted each other and are closed, ensure to go up casing and lower casing stable connection. And the conductor end parts of the inner joint part and the outer joint part are respectively provided with a notch structure, and the notch structure of the upper shell is abutted against the notch structure of the lower shell. The notch structure of the upper shell and the notch structure of the lower shell are symmetrically arranged, and the flat notch structures are convenient for mutual extrusion contact, so that the structural stability of the inner connecting end and the outer connecting end is ensured.
The winding wire clamping device is characterized in that inner wire clamping grooves are uniformly formed in the inner ring in an encircling mode, outer wire clamping grooves are formed in the outer ring, the number of the inner wire clamping grooves corresponds to that of the outer wire clamping grooves, and the winding wire can be connected with the wire clamping grooves in a clamping mode. Furthermore, the inner wire clamping groove and the outer wire clamping groove are arranged in a staggered mode. The inner wire clamping grooves and the outer wire clamping grooves are arranged in pairs, and each pair of inner wire clamping grooves and each pair of outer wire clamping grooves form a winding wire installation path. Therefore, the winding wires arranged inside the coil assembly are enabled to form a certain spiral angle through the inner wire clamping grooves and the outer wire clamping grooves which are arranged in a staggered mode, and the coil assembly with the spiral structure formed by the winding wires with the spiral angle can be matched with an external instrument to carry out efficient test on the magnetic ring.
The magnetic ring test coil shell disclosed in this embodiment is firstly tested after being manufactured, and the embodiment of the test scheme is as follows: the inductance, Q value, superimposed inductance and loss of a magnetic ring were tested using the coil housing disclosed in this example. And then, setting a comparative example: and testing the inductance, the Q value, the superposed inductance and the loss of the same magnetic ring on the same instrument by using the same condition of the common winding mode and the embodiment.
The test results were as follows:
the results of the examples and comparative examples illustrate that: the test results of the examples were almost the same as those of the comparative examples, and the test using the coil housing could achieve the same test effect as that of the conventional winding method.
When the magnetic ring testing coil shell disclosed by the embodiment works, a magnetic ring to be tested is placed into the coil shell with a corresponding design size, the first concave-convex structure and the second concave-convex structure are aligned and tightly involuted, so that the upper shell and the lower shell of the coil shell are spliced, the inner connecting end of the upper winding wire and the inner connecting end of the lower winding wire are tightly contacted with the conductive contact point on the outer connecting end, and the main outer connecting end extends to a testing instrument to test the performance of the magnetic ring.
When in loss test, two coil shells with matched sizes are nested outside the magnetic ring, main inner connection ends on the inner connection parts of the coil shells extend out of the clamping grooves of the outer ring, and the inner connection ends and the outer connection ends are connected to a test instrument for test.
In addition to the above embodiments, the technical features of the present invention can be re-selected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention which are not described in detail should be regarded as the specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a magnetic ring test coil shell, characterized by includes combination formula casing, combination formula casing includes casing and lower casing, go up casing and casing down and all include inner ring and outer loop, be provided with the bottom plate between inner ring and the outer loop, the inner ring inboard is provided with the through-hole, be provided with coil assembly on the bottom plate, coil assembly includes the interior joint part that extends to the through-hole and extends to the outer joint part beyond the outer loop.
2. A magnetic ring testing coil casing as claimed in claim 1, wherein the coil assembly includes a plurality of winding wires uniformly annularly disposed on the bottom plate, the winding wires include conductors and insulating layers wrapped around the conductors, two ends of the winding wires are respectively inner joint portions and outer joint portions, and the conductors of the inner joint portions and the outer joint portions are exposed outside the insulating layers.
3. The magnetic ring testing coil shell as claimed in claim 1, wherein the outer annular wall opening of the upper shell is provided with a first concave-convex structure, the outer annular wall opening of the lower shell is provided with a second concave-convex structure adapted to the first concave-convex structure, and the first concave-convex structure and the second concave-convex structure are connected in an insertion manner.
4. A magnetic ring testing coil casing as claimed in claim 2, wherein the winding wire includes a section a disposed at the tail end of the inner joint part, the section a is attached to the outer wall of the inner ring, the tail end of the section a is disposed with a section B attached to the upper surface of the bottom plate, and the tail end of the section B is disposed with a section C attached to the inner wall of the outer ring.
5. The magnetic ring test coil shell as claimed in claim 2, wherein the conductor ends of the inner joint portion and the outer joint portion are provided with notch structures, and the notch structures of the upper shell are abutted against the notch structures of the lower shell.
6. A magnetic ring testing coil casing as claimed in any one of claims 1 to 5, wherein the inner ring is uniformly provided with inner clamping slots, the outer ring is provided with outer clamping slots, the number of the inner clamping slots corresponds to the number of the outer clamping slots, and the winding wire can be clamped and connected with the clamping slots.
7. The magnetic ring testing coil shell as claimed in claim 6, wherein the inner slot and the outer slot are disposed in a staggered manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156782.XA CN112505361B (en) | 2020-10-26 | 2020-10-26 | Magnetic ring test coil shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156782.XA CN112505361B (en) | 2020-10-26 | 2020-10-26 | Magnetic ring test coil shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112505361A true CN112505361A (en) | 2021-03-16 |
| CN112505361B CN112505361B (en) | 2021-11-19 |
Family
ID=74955912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011156782.XA Active CN112505361B (en) | 2020-10-26 | 2020-10-26 | Magnetic ring test coil shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112505361B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331220A (en) * | 2002-05-13 | 2003-11-21 | Mitsubishi Materials Corp | Measuring device and measuring method of rfid tag and manufacturing method of rfid tag by using device |
| CN201828613U (en) * | 2010-09-08 | 2011-05-11 | 横店集团东磁股份有限公司 | Testing device for inductance of magnetic ring |
| JP2014119409A (en) * | 2012-12-19 | 2014-06-30 | Fujitsu Component Ltd | Power sensor |
| CN104198822A (en) * | 2014-08-28 | 2014-12-10 | 东莞市大忠电子有限公司 | Device for rapidly testing amorphous magnetic ring and test method thereof |
| CN104865451A (en) * | 2015-06-15 | 2015-08-26 | 李玲 | Magnet ring inductance testing device with positioning function |
| CN108710012A (en) * | 2018-05-30 | 2018-10-26 | 郑州云海信息技术有限公司 | A kind of adjustable magnet ring |
| CN208334428U (en) * | 2018-07-01 | 2019-01-04 | 山东凯通电子有限公司 | A kind of toroidal core multi-turn inductance test fixture |
| CN209432905U (en) * | 2018-11-30 | 2019-09-24 | 东莞市大忠电子有限公司 | A kind of equipment of quick test amorphous magnet ring |
-
2020
- 2020-10-26 CN CN202011156782.XA patent/CN112505361B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003331220A (en) * | 2002-05-13 | 2003-11-21 | Mitsubishi Materials Corp | Measuring device and measuring method of rfid tag and manufacturing method of rfid tag by using device |
| CN201828613U (en) * | 2010-09-08 | 2011-05-11 | 横店集团东磁股份有限公司 | Testing device for inductance of magnetic ring |
| JP2014119409A (en) * | 2012-12-19 | 2014-06-30 | Fujitsu Component Ltd | Power sensor |
| CN104198822A (en) * | 2014-08-28 | 2014-12-10 | 东莞市大忠电子有限公司 | Device for rapidly testing amorphous magnetic ring and test method thereof |
| CN104865451A (en) * | 2015-06-15 | 2015-08-26 | 李玲 | Magnet ring inductance testing device with positioning function |
| CN108710012A (en) * | 2018-05-30 | 2018-10-26 | 郑州云海信息技术有限公司 | A kind of adjustable magnet ring |
| CN208334428U (en) * | 2018-07-01 | 2019-01-04 | 山东凯通电子有限公司 | A kind of toroidal core multi-turn inductance test fixture |
| CN209432905U (en) * | 2018-11-30 | 2019-09-24 | 东莞市大忠电子有限公司 | A kind of equipment of quick test amorphous magnet ring |
Non-Patent Citations (1)
| Title |
|---|
| 李俊峰等: "基于纹理抑制的磁环表面缺陷检测方法研究", 《光电子·激光》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112505361B (en) | 2021-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7708594B2 (en) | Electrical connector with magnetic module | |
| US20100062645A1 (en) | Electrical connector system with magnetic module | |
| US20100022133A1 (en) | Electrical connector system with magnetic module | |
| WO2020244144A1 (en) | Unit-type current transformer | |
| CN112505361B (en) | Magnetic ring test coil shell | |
| US5929374A (en) | Electric cable and connector system | |
| US6060974A (en) | Header plate for a low profile surface mount transformer | |
| CN215955034U (en) | Magnetic element | |
| CN1979704B (en) | Transformer and its producing method | |
| CN206148264U (en) | Can notched zero sequence bar type current transformer | |
| CN213752300U (en) | Transformer module and electronic device using same | |
| CN210534264U (en) | Partial discharge detection sensor | |
| WO2021013249A1 (en) | Partial discharge detection sensor and manufacturing method therefor | |
| CN110415956B (en) | Combined electricity-taking and measuring transformer | |
| CN212434443U (en) | Coil structure and magnetic element | |
| CN109782043B (en) | External clamping type current sensor, manufacturing method thereof and auxiliary manufacturing tool | |
| CN201247874Y (en) | Vertical type assembling structure for radio frequency coaxial flexible cable | |
| CN108075333B (en) | Coil connector | |
| CN106450865B (en) | Plug connector assembly | |
| CN219321145U (en) | EMI filter | |
| CN117276987B (en) | Wire box conductor connection structure and commodity anti-theft safety display device | |
| CN210576886U (en) | Quick-plugging radio frequency coaxial connector | |
| CN220253017U (en) | Flexible wire input type voltage transformer | |
| CN221746985U (en) | Nanocrystalline runway magnetic core common mode inductor | |
| CN218004580U (en) | Inductor coil and inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A magnetic ring test coil shell Effective date of registration: 20220622 Granted publication date: 20211119 Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd. Pledgor: HENGDIAN GROUP DMEGC MAGNETICS Co.,Ltd. Registration number: Y2022330001026 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |