CN117347717A - Quick tester for secondary circuit insulation resistance - Google Patents
Quick tester for secondary circuit insulation resistance Download PDFInfo
- Publication number
- CN117347717A CN117347717A CN202311144979.5A CN202311144979A CN117347717A CN 117347717 A CN117347717 A CN 117347717A CN 202311144979 A CN202311144979 A CN 202311144979A CN 117347717 A CN117347717 A CN 117347717A
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- CN
- China
- Prior art keywords
- storage box
- fixedly arranged
- insulation resistance
- meter
- secondary circuit
- 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.)
- Pending
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- 238000009413 insulation Methods 0.000 title claims abstract description 41
- 238000003825 pressing Methods 0.000 claims description 29
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 101000579647 Penaeus vannamei Penaeidin-2a Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
-
- 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
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
-
- 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
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/073—Multiple probes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to the technical field of insulation resistance, in particular to a secondary circuit insulation resistance rapid tester, which comprises an insulation resistance meter, wherein the insulation resistance meter comprises a meter body and two conductive meter pens, the conductive meter pens comprise meter pen handles and conductive pins, and the secondary circuit insulation resistance rapid tester further comprises: the protection storage box is provided with a convenient protection cover assembly on one side, the watch body is positioned on the inner side of the protection storage box, and a quick assembly disassembly assembly is arranged between the protection storage box and the watch body; a plurality of magnets, wherein one side of the protection storage box is provided with a plurality of mounting grooves, and the magnets are fixed at the inner sides of the mounting grooves; and the two switching sleeves slide on the outer side of the pen handle. According to the invention, the meter body, the conductive meter pen, the meter pen handle, the conductive needle, the protection storage box, the magnet, the switching sleeve, the portable handle, the flexible belt and the protection cover plate are arranged, so that the meter has the functions of quick switching, convenience in use, convenience in single person use, multiple use modes and protection.
Description
Technical Field
The invention relates to the technical field of insulation resistance, in particular to a secondary circuit insulation resistance rapid tester.
Background
Insulation resistance is the most basic insulation index for electrical equipment and electrical lines. For the handover test of the low voltage electric device, the insulation resistance of the motor, the distribution equipment and the distribution line should not be lower than 0.5mΩ at normal temperature (for the equipment and the line in operation, the insulation resistance should not be lower than 1mΩ/kV). The insulation resistance of the piezoelectric device and its connection cable and secondary circuit should generally not be lower than 1mΩ; should not be below 0.5mΩ in a relatively humid environment; the insulation resistance of the secondary circuit busbar should not be lower than 10mΩ. The insulation resistance of the class I hand-held power tool should not be lower than 2mΩ. Insulation resistance: and (3) applying a direct current voltage to the dielectric medium, and after a certain time of polarization process is finished, the resistance corresponding to the leakage current flowing through the dielectric medium is called an insulation resistance. At present, when a circuit is overhauled, an insulation resistance meter is required to be used for testing insulation resistance.
When the conventional insulating resistance meter is used, a handheld conductive meter pen is required to contact a test point, when one conductive meter pen is required to contact a ground wire for a long time, the conductive meter pen with a conductive needle is required to be replaced by the conductive meter pen with a clamp, the conductive meter pen cannot be replaced quickly, the test efficiency is low, the use is inconvenient, and due to the fact that the two conductive meter pens and the insulating resistance meter are arranged, the two conductive meter pens and the insulating resistance meter are usually required to be matched for use by two persons, so that the conventional insulating resistance meter is inconvenient for a single person to operate.
Disclosure of Invention
The invention aims to solve the defects that the conductive meter pen cannot be replaced quickly when the conventional insulating resistance meter is used, the testing efficiency is low and the use by a single person is inconvenient, and provides a secondary circuit insulating resistance quick tester.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a quick tester of secondary circuit insulation resistance, includes insulation resistance meter, insulation resistance meter includes a table body and two electrically conductive table pens, and electrically conductive table pen includes table pen handle, electrically conductive needle, still includes:
the protection storage box is provided with a convenient protection cover assembly on one side, the watch body is positioned on the inner side of the protection storage box, and a quick assembly disassembly assembly is arranged between the protection storage box and the watch body;
a plurality of magnets, wherein one side of the protection storage box is provided with a plurality of mounting grooves, and the magnets are fixed at the inner sides of the mounting grooves;
the two switching sleeves slide on the outer side of the pen handle, and one side of each switching sleeve is provided with a switching electricity measuring assembly.
Preferably, one side of the protection storage box is fixedly provided with a portable handle.
Preferably, just, with protecting cover subassembly includes the flexible band, and the flexible band is fixed in the downside of protecting the receiver, and one side of flexible band is fixed to be equipped with the protective cover board, and protective cover board one side is fixed to be equipped with sealed frame, and one side of protecting the receiver is equipped with the frame type groove, sealed frame and frame type groove assorted, sealed frame can dismantle the inboard in frame type groove, and protective receiver upside, flexible band one side are all fixed and are equipped with the magic subsides.
Preferably, one end of the flexible belt is fixedly provided with a pulling handle belt.
Preferably, the quick assembly disassembly subassembly includes positioning seat, the pressure strip, the positioning seat is fixed on the interior one side of protection receiver, the table body can dismantle the inboard at the positioning seat, the fixed a plurality of telescopic columns that are equipped with in pressure strip one side, the outside of telescopic column all slides and is equipped with the adapter sleeve, the adapter sleeve is all fixed on the interior one side of protection receiver, the fixed first spring that is equipped with between telescopic column one side and the interior one side of protection receiver, the fixed contact pad that is equipped with of pressure strip opposite side, the contact pad contacts with the table body, telescopic column one side all is equipped with oblique side hole, the downthehole one side of oblique side all slides and is equipped with the hypotenuse piece, protection receiver one side is equipped with the through-hole inboard slides and is equipped with the pressure bar, the hypotenuse piece is all fixed on pressure bar one side, the fixed pressing piece that is equipped with in the periphery of pressure bar, the periphery of pressure bar is gone up to slide and is equipped with a plurality of guide holders, the guide holder is all fixed on the interior one side of protection receiver.
Preferably, the switching electricity measurement assembly comprises a contact block, a guide groove is arranged on one side of a meter pen handle, the contact block slides on the inner side of the guide groove, the contact block can be contacted with a conductive needle, a bevel edge outage block is fixedly arranged on one side of the guide groove, the contact block can slide on one side of the bevel edge outage block, a second spring and a lifting column are fixedly arranged on the upper side of the contact block, the upper end of the second spring is fixedly arranged on the inner side of a switching sleeve, a driving sleeve is slidably arranged on the outer side of the lifting column, a through hole is formed in one side of the switching sleeve, the driving sleeve is fixedly arranged on the inner side of the through hole, a fixed chuck is fixedly arranged at the upper end of the driving sleeve, an insulating seat is fixedly arranged on the outer side of the fixed chuck, a rotating chuck is fixedly arranged on the outer periphery of the rotating chuck, and a third spring is fixedly arranged between the insulating sleeve and the insulating seat.
Preferably, anti-skid grooves are arranged on one side of the fixed chuck and one side of the rotary chuck.
Preferably, the contact block, the lifting column, the driving sleeve, the fixed chuck and the rotating chuck are all made of conductive metal materials.
The secondary circuit insulation resistance rapid tester provided by the invention has the beneficial effects that:
(1) By arranging the conductive meter pen, the meter pen handle, the conductive needle, the switching sleeve and the switching electricity measuring assembly, the invention has the functions of quick switching and convenient use, can be quickly switched into a test clamp or test needle mode, can select a proper test mode according to requirements, and can accelerate the test efficiency.
(2) Through setting up table body, protection receiver, magnet, portable handle, pull the handle area, just use protective cover subassembly, quick assembly disassembly subassembly for the invention has be convenient for single use, various use modes, safeguard function, and the single use operation of being convenient for, can protect the table body moreover.
Drawings
FIG. 1 is a schematic diagram of a front perspective structure of a secondary circuit insulation resistance rapid tester according to the present invention;
FIG. 2 is a schematic diagram of a rear perspective structure of a secondary circuit insulation resistance rapid tester according to the present invention;
FIG. 3 is a schematic view of a front cut-away perspective structure of a secondary circuit insulation resistance rapid tester according to the present invention;
FIG. 4 is a schematic view of the enlarged partial structure of the area A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of the partial enlarged structure of the area B in FIG. 4 according to the present invention;
fig. 6 is a schematic view of a front partial cutaway perspective structure of a secondary circuit insulation resistance rapid tester according to the present invention.
In the figure: 1. a body of the watch; 2. a conductive meter pen; 3. a pen handle; 4. a conductive needle; 5. a protective storage box; 6. a magnet; 7. a switching sleeve; 8. a handle is convenient to carry; 9. a flexible belt; 10. a protective cover plate; 11. sealing the frame; 12. a frame-type groove; 13. a magic tape; 14. pulling the handle strap; 15. a positioning seat; 16. a compacting plate; 17. a telescopic column; 18. connecting sleeves; 19. a first spring; 20. a contact pad; 21. a bevel hole; 22. a beveled edge block; 23. pressing a pressing rod; 24. pressing the sheet; 25. a retaining ring frame; 26. a guide seat; 27. a contact block; 28. a guide groove; 29. a bevel edge power-off block; 30. a second spring; 31. lifting columns; 32. a driving sleeve; 33. fixing a chuck; 34. an insulating base; 35. rotating the chuck; 36. an insulating sleeve; 37. and a third spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-6, a secondary circuit insulation resistance rapid tester comprises an insulation resistance meter, wherein the insulation resistance meter comprises a meter body 1 and two conductive meter pens 2, the conductive meter pens 2 comprise meter pen handles 3 and conductive needles 4, and further comprises:
the protection receiver 5, protection receiver 5 one side is fixed to be equipped with just carrying handle 8, protection receiver 5 one side is equipped with just with the protection lid subassembly, just use the protection lid subassembly and include flexible band 9, flexible band 9 is fixed in the downside of protection receiver 5, the fixed protective cover plate 10 that is equipped with in one side of flexible band 9, the fixed sealed frame 11 that is equipped with in protective cover plate 10 one side, one side of protection receiver 5 is equipped with frame type groove 12, sealed frame 11 and frame type groove 12 assorted, sealed frame 11 can dismantle the inboard in frame type groove 12, protection receiver 5 upside, flexible band 9 one side is all fixed to be equipped with magic tape 13, the one end of flexible band 9 is fixed to be equipped with and pulls handle area 14, when not needing to use the insulating resistance meter, can place table body 1 in protection receiver 5, then will, protective cover plate 10 is covered on protection receiver 5, make sealed frame 11 card in frame type groove 12, then paste two magic tapes 13 together, at this moment, can protect table body 1, and when need use table body 1, can hold the area and pull open the handle area 14, then use the table body 13, can be opened conveniently;
the watch body 1 is positioned at the inner side of the protection storage box 5, a quick assembly disassembly component is arranged between the protection storage box 5 and the watch body 1, the quick assembly disassembly component comprises a positioning seat 15 and a pressing plate 16, the positioning seat 15 is fixed on the inner side of the protection storage box 5, the watch body 1 can be disassembled at the inner side of the positioning seat 15, a plurality of telescopic columns 17 are fixedly arranged on one side of the pressing plate 16, connecting sleeves 18 are slidably arranged on the outer sides of the telescopic columns 17, the connecting sleeves 18 are fixedly arranged on the inner side of the protection storage box 5, a first spring 19 is fixedly arranged between one side of the telescopic columns 17 and the inner side of the protection storage box 5, a contact pad 20 is fixedly arranged on the other side of the pressing plate 16, the contact pad 20 is contacted with the watch body 1, inclined edge holes 21 are respectively arranged on one side of the telescopic columns 17, inclined edge blocks 22 are slidably arranged on one side of the inclined edge holes 21, through holes are respectively arranged on one side of the protection storage box 5, pressing rods 23 are slidably arranged on the inner sides of the through holes, the bevel edge block 22 is fixed on one side of the pressing rod 23, one end of the pressing rod 23 is fixedly provided with a pressing sheet 24, the periphery of the pressing rod 23 is fixedly provided with a baffle ring frame 25, the periphery of the pressing rod 23 is slidably provided with a plurality of guide seats 26, the guide seats 26 are fixed on one side of the protection storage box 5, when in use, the watch body 1 can be selected to be used on the inner side of the protection storage box 5, or the watch body 1 can be selected to be taken out of the protection storage box 5, when the watch body 1 needs to be taken out of the protection storage box 5, the pressing sheet 24 can be pressed, when the pressing sheet 24 is pressed, the pressing rod 23 and the bevel edge block 22 can move, at the moment, the telescopic column 17 can be automatically far away from the watch body 1, the telescopic column 17 can drive the pressing sheet 16 and the contact pad 20 to move together when moving, at the moment, the watch body 1 can be taken out from the positioning seat 15, when the body 1 needs to be used inside the protective storage box 5, the pressing piece 24 can be pressed firstly, then the body 1 is placed into the positioning seat 15, then the pressing piece 24 is loosened, and at the moment, the contact pad 20 can press the body 1 due to the tension of the first spring 19, so that the body 1 can be fixed in the positioning seat 15, and the body has various use modes and is convenient to use;
the magnets 6 are arranged on one side of the protection storage box 5, the magnets 6 are fixed on the inner side of the installation groove, when the protection storage box is required to be operated by a single person, the magnets 6 can be adsorbed on the shell of the electric appliance cabinet, and then the conductive meter pen 2 can be held by both hands respectively for use and test, so that the protection storage box is convenient for the single person to use and operate;
two switch sleeves 7, the switch sleeve 7 slides on the outer side of the pen holder 3, a switch electricity measuring component is arranged on one side of the switch sleeve 7, the switch electricity measuring component comprises a contact block 27, a guide groove 28 is arranged on one side of the pen holder 3, the contact block 27 slides on the inner side of the guide groove 28, the contact block 27 can be contacted with a conductive needle 4, a bevel edge power-off block 29 is fixedly arranged on one side of the guide groove 28, the contact block 27 can slide on one side of the bevel edge power-off block 29, a second spring 30 and a lifting column 31 are fixedly arranged on the upper side of the contact block 27, the upper end of the second spring 30 is fixedly arranged on the inner side of the switch sleeve 7, a driving sleeve 32 is slidingly arranged on the outer side of the lifting column 31, a through hole is arranged on one side of the switch sleeve 7, the driving sleeve 32 is fixedly arranged on the inner side of the through hole, a fixed chuck 33 is fixedly arranged on the upper end of the driving sleeve 32, an insulating seat 34 is fixedly arranged on the outer side of the fixed chuck 33, the upper side of the fixed chuck 33 is rotatably provided with a rotary chuck 35, the contact block 27, the lifting column 31, the driving sleeve 32, the fixed chuck 33 and the rotary chuck 35 are made of conductive metal, one sides of the fixed chuck 33 and the rotary chuck 35 are respectively provided with an anti-slip groove, the periphery of the rotary chuck 35 is fixedly provided with an insulating sleeve 36, a third spring 37 is fixedly arranged between the insulating sleeve 36 and the insulating seat 34, when in use, when a test point needs to be contacted and tested for a long time, the switching sleeve 7 can be pushed towards the direction of the conductive needle 4, the switching can be completed, the conductive needle 4 can be protected in the switching sleeve 7, so that the switching sleeve 7 is prevented from contacting other positions, then the rotary chuck 35 can be pressed down, then a wire or a test point to be tested is clamped between the fixed chuck 33 and the rotary chuck 35, and then the rotary chuck 35 is loosened, at this time, the rotating chuck 35 clamps the test point due to the tension of the third spring 37, at this time, the electrical signal on the test point is conducted to the conductive needle 4 through the fixed chuck 33, the driving sleeve 32, the lifting column 31 and the contact block 27, at this time, the test point can be tested, and when the conductive needle 4 is needed to be used, the switching sleeve 7 can be pushed in the direction away from the conductive needle 4, at this time, the conductive needle 4 can be used, and the contact block 27 can be away from the conductive needle 4 due to the bevel-edge power-off block 29, so when the conductive needle 4 is used, the fixed chuck 33 and the rotating chuck 35 are not electrified, thereby preventing the fixed chuck 33 and the rotating chuck 35 from mistakenly touching other objects, realizing quick switching, and improving the test efficiency.
Claims (8)
1. The utility model provides a secondary circuit insulation resistance rapid tester, includes insulation resistance meter, insulation resistance meter includes a table body (1) and two electrically conductive table pens (2), and electrically conductive table pen (2) include table pen handle (3), electrically conductive needle (4), its characterized in that still includes:
the novel watch comprises a protection storage box (5), wherein a convenient protection cover assembly is arranged on one side of the protection storage box (5), a watch body (1) is positioned on the inner side of the protection storage box (5), and a quick assembly disassembly assembly is arranged between the protection storage box (5) and the watch body (1);
a plurality of magnets (6), wherein one side of the protection storage box (5) is provided with a plurality of mounting grooves, and the magnets (6) are fixed at the inner sides of the mounting grooves;
the two switching sleeves (7), the switching sleeves (7) slide on the outer side of the pen holder (3), and one side of each switching sleeve (7) is provided with a switching electricity measuring assembly.
2. The rapid tester for secondary circuit insulation resistance according to claim 1, wherein a portable handle (8) is fixedly arranged on one side of the protective storage box (5).
3. The quick tester for the insulation resistance of the secondary circuit according to claim 1, wherein the protective cover assembly for convenience comprises a flexible belt (9), the flexible belt (9) is fixed on the lower side of the protective storage box (5), a protective cover plate (10) is fixedly arranged on one side of the flexible belt (9), a sealing frame (11) is fixedly arranged on one side of the protective cover plate (10), a frame-type groove (12) is arranged on one side of the protective storage box (5), the sealing frame (11) is matched with the frame-type groove (12), the sealing frame (11) is detachable on the inner side of the frame-type groove (12), and a magic tape (13) is fixedly arranged on the upper side of the protective storage box (5) and one side of the flexible belt (9).
4. A secondary circuit insulation resistance rapid tester according to claim 3, characterized in that one end of the flexible strap (9) is fixedly provided with a pulling handle strap (14).
5. The rapid tester for secondary circuit insulation resistance according to claim 1, wherein the rapid disassembly and assembly component comprises a positioning seat (15) and a pressing plate (16), the positioning seat (15) is fixed on the inner side of the protection storage box (5), the meter body (1) is detachable on the inner side of the positioning seat (15), a plurality of telescopic columns (17) are fixedly arranged on one side of the pressing plate (16), connecting sleeves (18) are slidably arranged on the outer sides of the telescopic columns (17), the connecting sleeves (18) are fixedly arranged on the inner side of the protection storage box (5), a first spring (19) is fixedly arranged between one side of the telescopic columns (17) and the inner side of the protection storage box (5), a contact pad (20) is fixedly arranged on the other side of the pressing plate (16), the contact pad (20) is in contact with the meter body (1), inclined edge holes (21) are respectively arranged on one side of the telescopic columns (17), inclined edge blocks (22) are respectively slidably arranged on one side of the protection storage box (5), a through hole is respectively arranged on one side of the inner side of the inclined edge holes, a pressing rod (23) is slidably arranged on the inner side of the telescopic columns, a plurality of pressing rods (23) are fixedly arranged on one side of the inclined edge blocks (23), a plurality of pressing rods (23) are respectively arranged on one side of the periphery of the pressing rods (23), one end of the pressing rods (23) is fixedly arranged on one side of the periphery of the pressing rods, and one side of the pressing rods is respectively, the guide seats (26) are all fixed on the inner side of the protection storage box (5).
6. The rapid tester for secondary circuit insulation resistance according to claim 1, wherein the switching electricity measuring assembly comprises a contact block (27), a guide groove (28) is arranged on one side of a meter pen handle (3), the contact block (27) slides on the inner side of the guide groove (28), the contact block (27) can be contacted with a conductive needle (4), an inclined-edge electricity breaking block (29) is fixedly arranged on one side of the guide groove (28), the contact block (27) can slide on one side of the inclined-edge electricity breaking block (29), a second spring (30) and a lifting column (31) are fixedly arranged on the upper side of the contact block (27), the upper end of the second spring (30) is fixedly arranged on the inner side of a switching sleeve (7), a driving sleeve (32) is slidably arranged on the outer side of the lifting column (31), a through hole is arranged on one side of the switching sleeve (7), a fixing chuck (33) is fixedly arranged on the upper end of the driving sleeve (32), an insulating seat (34) is fixedly arranged on the outer side of the fixing chuck (33), an insulating seat (34) is fixedly arranged on the outer side of the switching sleeve (7), a rotating chuck (35) is fixedly arranged on the outer side of the switching sleeve (33), a third spring (37) is fixedly arranged between the insulating sleeve (36) and the insulating seat (34).
7. The rapid tester for secondary circuit insulation resistance according to claim 6, wherein the fixed clamp (33) and the rotary clamp (35) are provided with anti-slip grooves on one side.
8. The rapid tester for secondary circuit insulation resistance according to claim 6, wherein the contact block (27), the lifting column (31), the driving sleeve (32), the fixed clamping head (33) and the rotating clamping head (35) are all made of conductive metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311144979.5A CN117347717A (en) | 2023-09-06 | 2023-09-06 | Quick tester for secondary circuit insulation resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311144979.5A CN117347717A (en) | 2023-09-06 | 2023-09-06 | Quick tester for secondary circuit insulation resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117347717A true CN117347717A (en) | 2024-01-05 |
Family
ID=89358275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311144979.5A Pending CN117347717A (en) | 2023-09-06 | 2023-09-06 | Quick tester for secondary circuit insulation resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117347717A (en) |
-
2023
- 2023-09-06 CN CN202311144979.5A patent/CN117347717A/en active Pending
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