CN113839270B - Binding post wiring anti-drop device of sensor - Google Patents
Binding post wiring anti-drop device of sensor Download PDFInfo
- Publication number
- CN113839270B CN113839270B CN202111117692.4A CN202111117692A CN113839270B CN 113839270 B CN113839270 B CN 113839270B CN 202111117692 A CN202111117692 A CN 202111117692A CN 113839270 B CN113839270 B CN 113839270B
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- China
- Prior art keywords
- block
- rod
- extrusion
- induction
- movable
- Prior art date
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Links
- 238000001125 extrusion Methods 0.000 claims abstract description 54
- 230000006698 induction Effects 0.000 claims abstract description 24
- 230000008602 contraction Effects 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims 6
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
Abstract
The invention relates to the technical field of dies and discloses a wiring terminal wiring anti-falling device of a sensor, which comprises a wiring box, wherein a terminal connecting block is arranged at the inner bottom end of the wiring box, terminal wiring ports are uniformly formed in the surface of the terminal connecting block, a mounting plate is arranged on one side surface of the wiring box, and an induction block is arranged on the left side of the inner wall of the wiring box. The wiring terminal wiring anti-drop device of this sensor promotes the poking rod through the inside when the line inserts the wire wiping groove and removes to the left side this moment, poking rod and loose axle connection for the gear removes to the left side on the rack, and the extrusion pole removes to the left side this moment, and when the extrusion pole promotes movable block extrusion coupling spring, the relative area that the insulating block removes and makes anodal post and negative pole post increases this moment, and voltage between anodal post and negative pole post is greater than the minimum access voltage of piezo-resistor, and the piezo-resistor passageway for fixture fixes the position of line, avoids appearing rocking, leads to the contact failure.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a wiring anti-falling device of a wiring terminal of a sensor.
Background
The sensor is an input device of a computer system, and converts various working condition information in the running process of the machine, such as running speed, temperature of various media, running condition of the engine and the like, into an electric signal to be transmitted to the computer so that the engine is in an optimal working state.
When detecting each part or detecting whether a sensor is abnormal, the wiring device needs to be plugged and unplugged, the wiring device is required to be plugged and unplugged easily, and the wiring device is clamped firmly after being connected with the sensor, so that the situation that slipping and loosening or other poor contact are difficult to occur is required. However, in the actual manual operation process, due to uneven stress or unstable machine operation, poor contact and shaking occur, so that the internal resistance is overlarge, and the operation temperature of the sensor is overhigh, thereby affecting normal use.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a binding post wiring anti-drop device of sensor, includes the terminal box, the terminal connecting block is installed to the inside bottom of terminal box, the surface of terminal connecting block evenly is provided with the terminal wiring mouth, terminal box one side surface mounting has the mounting panel, the response piece is installed in the inner wall left side of terminal box, the inner wall right side of response piece is provided with the air cavity, the response piece internally mounted in the air cavity outside has two to touch the briquetting for symmetric distribution, install extrusion mechanism between air cavity and the touch briquetting, two the response piece internally mounted in the briquetting outside has induction mechanism, response piece right side surface mounting has the slide bar, the spout has been seted up to the inside of slide bar, spout inside movable mounting has the loose axle, the both sides surface of loose axle is provided with the gear, the outside surface of gear is provided with the poking bar, the extrusion bar is installed in the axle outside of gear one side surface, the terminal box internally mounted on the surface on the air cavity right side has been seted up the wiring groove in the box inside, the terminal box inner wall surface motor distributes about being two, the output of rack inside is provided with shrinkage mechanism, shrinkage mechanism sets up.
Preferably, the extrusion mechanism comprises an extrusion block and an extrusion spring, wherein the extrusion block is arranged on the outer side surface of the air cavity at the inner side of the contact block, and the extrusion spring is arranged between the extrusion block and the contact block.
Preferably, the sensing mechanism comprises a limit groove, a connecting spring, a movable block and an electric component, wherein the limit groove is formed in the sensing block on the left side of the sliding rod, the connecting spring is mounted on the surface of the inner wall on the left side of the limit groove, the movable block is mounted on the surface of the right side of the connecting spring, and the electric component is mounted in the sensing block on the outer side of the movable block.
Preferably, the electrical component comprises an insulating block, a positive pole, a negative pole and a piezoresistor, wherein the insulating block is arranged in the movable block, the positive pole is arranged on one side surface of the limiting groove, the negative pole is arranged on the other side surface of the limiting groove, and the piezoresistor is arranged on one side of the negative pole.
Preferably, the shrinkage mechanism comprises a shrinkage rod and a connecting rod, the shrinkage rod is arranged between the clamping mechanism and the shrinkage mechanism, and the connecting rod is arranged at the bottom end of the shrinkage rod.
Preferably, the clamping mechanism comprises a supporting rod, a movable rod and a clamping block, the supporting rod is mounted on the outer side surface of the shrinkage rod, the movable rod is movably mounted between the inward extending end of the connecting rod and the supporting rod, and the clamping block is mounted at the downward extending end of the supporting rod.
Preferably, a movable pin is arranged between the support rod and the movable rod, and penetrates through the support rod and the movable rod.
Preferably, the positive electrode post and the negative electrode post are symmetrically distributed, and the negative electrode post is electrically connected with the piezoresistor.
Preferably, the touch block is electrically connected with the power switch, and compared with the prior art, the shrink rod is electrically connected with the motor, and the beneficial effects of the technical scheme are that:
1. the wiring terminal wiring anti-drop device of this sensor through setting up the inside air cavity of response piece, and inside temperature is too high at the terminal wiring mouth, and the air cavity is heated and is expanded this moment for the extrusion piece moves compression extrusion spring outward and extrudes the touch piece, and this sensor is inoperative this moment, avoids leading to hot wear under the too high condition of temperature, influences life.
2. The binding post wiring anti-drop device of this sensor uses through the cooperation of shrink mechanism and fixture, and during the piezo-resistor passageway, the explanation line has been inserted inside, and the motor work makes shrink pole shrink this moment, and the connecting rod upwards moves, drives the bracing piece and moves to inboard and fix the extrusion pole, avoids appearing becoming flexible in the in-process of using, influences the result of use.
3. The wiring terminal wiring anti-drop device of this sensor promotes the poking rod through the inside when the line inserts the wire wiping groove and removes to the left side this moment, poking rod and loose axle connection for the gear removes to the left side on the rack, and the extrusion pole removes to the left side this moment, and when the extrusion pole promotes movable block extrusion coupling spring, the relative area that the insulating block removes and makes anodal post and negative pole post increases this moment, and voltage between anodal post and negative pole post is greater than the minimum access voltage of piezo-resistor, and the piezo-resistor passageway for fixture fixes the position of line, avoids appearing rocking, leads to the contact failure.
Drawings
FIG. 1 is a schematic view of the external structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the wiring port of the present invention;
FIG. 3 is a schematic view of the left internal structure of the clamping mechanism of the present invention;
FIG. 4 is a schematic diagram of a mechanism for adjusting the position of gears and sliding bars according to the present invention
Fig. 5 is a schematic view of a partial enlarged structure at a in fig. 2 according to the present invention.
In the figure: 1. a junction box; 2. a connecting block; 3. a wiring port; 4. a mounting plate; 5. an induction block; 6. an air cavity; 7. a touch block; 8. a slide bar; 9. a chute; 10. a movable shaft; 11. a gear; 12. a toggle rod; 13. an extrusion rod; 14. a rack; 15. a wire inserting groove; 16. a motor; 17. extruding a block; 18. extruding a spring; 19. a limit groove; 20. a connecting spring; 21. a movable block; 22. an electrical component; 23. an insulating block; 24. a positive electrode post; 25. a negative electrode column; 26. a piezoresistor; 27. a retracting lever; 28. a connecting rod; 29. a support rod; 30. a movable rod; 31. and a clamping block.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, a terminal connection anti-falling device of a sensor comprises a terminal box 1, wherein a connecting block 2 is installed at the inner bottom end of the terminal box 1, the connecting block 2 connects the terminal box 1 with the sensor, a wiring port 3 is uniformly arranged on the surface of the terminal connecting block 2, a power line is plugged into the inside of the wiring port 3, a mounting plate 4 is installed on one side surface of the terminal box 1, the mounting plate 4 is used for fixing the terminal box 1 with a wall surface, an induction block 5 is installed on the left side of the inner wall of the terminal box 1, an air cavity 6 is arranged on the right side of the inner wall of the induction block 5, when the temperature in the terminal wiring port 3 is too high, the air cavity 6 is heated and expanded at the moment, a compression spring 18 is moved outwards by a compression extrusion block 17 to compress a contact block 7, the sensor does not work at the moment, thermal abrasion is avoided under the condition of too high temperature, and service life is influenced, the inside of the induction block 5 outside the air cavity 6 is provided with two contact blocks 7 which are symmetrically distributed, when the air cavity 6 expands, the extrusion block 17 moves outwards to compress the extrusion spring 18 to extrude the contact blocks 7, at the moment, the sensor does not work, the heat abrasion caused by overhigh temperature is avoided, the service life is influenced, an extrusion mechanism is arranged between the air cavity 6 and the contact blocks 7, the inside of the induction block 5 outside the two contact blocks 7 is provided with an induction mechanism, the right side surface of the induction block 5 is provided with a sliding rod 8, the inside of the sliding rod 8 is provided with a sliding groove 9, the inside of the sliding groove 9 is movably provided with a movable shaft 10, the movable shaft 10 is inserted into the sliding groove 9 at the part of the sliding rod 8, at the moment, the gear 11 moves leftwards in the plug wire groove 15 on the rack 14, at the moment, the extrusion rod 13 moves leftwards, the extrusion rod 13 pushes the movable block 21 to extrude the connecting spring 20, the connecting spring 20 moves leftwards in the limiting groove 19, the two side surfaces of the movable shaft 10 are provided with the gear 11, the gear 11 moves the extrusion block 17 on the rack 14 to enable the extrusion block 17 to extrude the movable block 21, the outer side surface of the gear 11 is provided with the toggle rod 12, the extrusion rod 13 is arranged on the outer side of the movable shaft 10 on one side surface of the gear 11, the rack 14 is arranged in the junction box 1 on the inner side surface of the gear 11, the wiring groove 15 is formed in the junction box 1 on the right side surface of the sensing block 5, two motors 16 are distributed on the inner wall surface of the junction box 1 up and down, the output end of each motor 16 is provided with a shrinkage mechanism, the inner side of each shrinkage mechanism is provided with a clamping mechanism, the clamping mechanism is matched with the corresponding shrinkage mechanism, when the piezoresistor 26 passes through, the piezoresistor 26 is electrically connected with the corresponding motor 16, the shrinkage rod 27 is shrunk, the connecting rod 28 moves upwards to drive the supporting rod 29 to move inwards to fix the extrusion block 17, and poor contact is avoided.
Specifically, extrusion mechanism includes extrusion piece 17 and extrusion spring 18, and the inside air cavity 6 outside surface mounting of touch briquetting 7 has extrusion piece 17, installs extrusion spring 18 between extrusion piece 17 and the touch briquetting 7, and when air cavity 6 thermal expansion for extrusion piece 17 moves compression extrusion spring 18 to the outside, extrudes touch briquetting 7, and this sensor is inoperative at this moment, avoids leading to hot wear under the condition of high temperature.
Further, the induction mechanism comprises a limit groove 19, a connecting spring 20, a movable block 21 and an electric component 22, wherein the limit groove 19 is formed in the induction block 5 on the left side of the sliding rod 8, the connecting spring 20 is installed on the surface of the inner wall on the left side of the limit groove 19, the movable block 21 is installed on the surface of the right side of the connecting spring 20, the electric component 22 is installed in the induction block 5 on the outer side of the movable block 21, the movable shaft 10 is inserted into the sliding groove 9 of the sliding rod 8, at this time, the gear 11 moves leftwards in the plug wire groove 15 on the rack 14, at this time, the extrusion rod 13 moves leftwards, the movable block 21 is pushed by the extrusion rod 13 to extrude the connecting spring 20, and the connecting spring 20 moves leftwards in the limit groove 19.
Further, the electrical component 22 includes an insulating block 23, a positive pole 24, a negative pole 25 and a piezoresistor 26, the insulating block 23 is installed inside the movable block 21, the positive pole 24 is installed on one side surface of the limiting groove 19, the negative pole 25 is installed on the other side surface of the limiting groove 19, the piezoresistor 26 is installed on one side surface of the limiting groove 19 of the negative pole 25, the positive pole 24 and the negative pole 25 are symmetrically distributed, the negative pole 25 is electrically connected with the piezoresistor 26, when the insulating block 23 moves to enable the relative area of the positive pole 24 and the negative pole 25 to increase, and when the voltage between the positive pole 24 and the negative pole 25 is greater than the minimum access voltage of the piezoresistor 26, the piezoresistor 26 is accessed.
Further, the contraction mechanism comprises a contraction rod 27 and a connecting rod 28, the contraction rod 27 is arranged between the clamping mechanism and the contraction mechanism, the connecting rod 28 is arranged at the bottom end of the contraction rod 27, the piezoresistor 26 is connected with the motor 16 in an electric mode, the contraction rod 27 contracts, the connecting rod 28 moves upwards, the supporting rod 29 is driven to move inwards to fix the extrusion block 17, and poor contact caused by looseness in the using process is avoided.
Further, the clamping mechanism comprises a supporting rod 29, a movable rod 30 and a clamping block 31, the supporting rod 29 is mounted on the outer side surface of the shrinkage rod 27, the movable rod 30 is movably mounted between the inward extending end of the connecting rod 28 and the supporting rod 29, and the clamping block 31 is mounted on the downward extending end of the supporting rod 29.
Further, a movable pin is arranged between the support rod 29 and the movable rod 30, the movable pin penetrates through the support rod 29 and the movable rod 30, when the motor 16 works, the shrinkage rod 27 is shrunk, the connecting rod 28 moves upwards, the support rod 29 is driven to move inwards to fix the extrusion block 17, and poor contact caused by looseness in the using process is avoided.
Further, the positive electrode post 24 and the negative electrode post 25 are symmetrically distributed, and the negative electrode post 25 is electrically connected with the piezoresistor 26, when the insulating block 23 moves to increase the relative area between the positive electrode post 24 and the negative electrode post 25, the voltage between the positive electrode post 24 and the negative electrode post 25 is greater than the minimum path voltage of the piezoresistor 26, and the piezoresistor 26 is in a path.
Further, the contact block 7 is electrically connected with the power switch, the shrinkage rod 27 is electrically connected with the motor 16, when the air cavity 6 is heated and expanded, the extrusion block 17 moves outwards to compress the extrusion spring 18, the contact block 7 is extruded, and at the moment, the sensor does not work, so that thermal abrasion caused under the condition of overhigh temperature is avoided.
The specific using method comprises the following steps: when the wire is inserted into the wire wiping groove 15, the wire pushes the extrusion poking rod 12 to move leftwards, the poking rod 12 is connected with the movable shaft 10, the movable shaft 10 is inserted into the sliding groove 9 of the sliding rod 8, the gear 11 is enabled to move leftwards on the rack 14 in the wire wiping groove 15, the extrusion rod 13 moves leftwards, the movable block 21 is pushed by the extrusion rod 13 to extrude the connecting spring 20, the connecting spring 20 moves leftwards in the limiting groove 19, the movable block 21 is internally provided with the insulating block 23, the insulating block 23 moves to enable the relative area of the positive pole 24 and the negative pole 25 to be increased, when the voltage between the positive pole 24 and the negative pole 25 is larger than the minimum passage voltage of the piezoresistor 26, the piezoresistor 26 is electrically connected with the motor 16, the shrinkage rod 27 is enabled to shrink, the connecting rod 28 moves upwards, the supporting rod 29 is driven to move inwards to fix the extrusion block 17, the inside is prevented from loosening in the using process, the inside of the induction block 5 is prevented from being caused by poor contact, the air cavity 6 is arranged in the inside the terminal opening 3, the inside the terminal opening 3 is excessively high in temperature, the thermal expansion 6 is enabled to enable the extrusion block 17 to move to be larger than the minimum passage voltage of the piezoresistor 26, and the thermal sensor is prevented from being influenced by the fact that the thermal sensor is compressed outside the compression spring is not influenced by the compression spring 7.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a binding post wiring anti-drop device of sensor, includes terminal box (1), its characterized in that: connecting block (2) are installed to the inside bottom of terminal box (1), connecting block (2) surface evenly is provided with wiring mouth (3), terminal box (1) one side surface mounting has mounting panel (4), induction block (5) are installed in the inner wall left side of terminal box (1), the inner wall right side of induction block (5) is provided with air cavity (6), induction block (5) internally mounted in air cavity (6) outside is the symmetric distribution and has two touch briquetting (7), install extrusion mechanism between air cavity (6) and touch briquetting (7), two induction block (5) internally mounted in touch briquetting (7) outside has induction mechanism, induction block (5) right side surface mounting slide bar (8), spout (9) have been seted up to the inside of slide bar (8), spout (9) internally movable mounting has loose axle (10), the outside surface of gear (10) is provided with two gears (11), the outside surface of gear (11) is provided with inside toggle rod (12), the inside of gear (11) outside is installed in the inside of expansion axle (11), expansion axle (14) is installed in the inside of expansion axle (1), the induction device is characterized in that a wiring groove (15) is formed in the junction box (1) on the right side surface of the induction block (5), two motors (16) are distributed on the inner wall surface of the junction box (1) up and down, a contraction mechanism is arranged at the output end of each motor (16), and a clamping mechanism is arranged on the inner side of each contraction mechanism.
2. The sensor terminal block fall-off prevention device according to claim 1, wherein: the extrusion mechanism comprises an extrusion block (17) and an extrusion spring (18), wherein the extrusion block (17) is arranged on the outer side surface of the air cavity (6) at the inner side of the contact block (7), and the extrusion spring (18) is arranged between the extrusion block (17) and the contact block (7).
3. The sensor terminal block fall-off prevention device according to claim 1, wherein: the induction mechanism comprises a limit groove (19), a connecting spring (20), a movable block (21) and an electric component (22), wherein the limit groove (19) is formed in the induction block (5) on the left side of the sliding rod (8), the connecting spring (20) is mounted on the surface of the inner wall on the left side of the limit groove (19), the movable block (21) is mounted on the surface of the right side of the connecting spring (20), and the electric component (22) is mounted in the induction block (5) on the outer side of the movable block (21).
4. A terminal block anti-drop device for a sensor according to claim 3, wherein: the electrical component (22) comprises an insulating block (23), a positive pole (24), a negative pole (25) and a piezoresistor (26), wherein the insulating block (23) is arranged in the movable block (21), the positive pole (24) is arranged on one side surface of the limiting groove (19), the negative pole (25) is arranged on the other side surface of the limiting groove (19), and the piezoresistor (26) is arranged on the surface of the limiting groove (19) on one side of the negative pole (25).
5. The sensor terminal block fall-off prevention device according to claim 1, wherein: the shrinkage mechanism comprises a shrinkage rod (27) and a connecting rod (28), the shrinkage rod (27) is arranged between the clamping mechanism and the shrinkage mechanism, and the connecting rod (28) is arranged at the bottom end of the shrinkage rod (27).
6. The sensor terminal block fall-off prevention device according to claim 5, wherein: the clamping mechanism comprises a supporting rod (29), a movable rod (30) and a clamping block (31), the supporting rod (29) is mounted on the outer side surface of the shrinkage rod (27), the movable rod (30) is movably mounted between the inward extending end of the connecting rod (28) and the supporting rod (29), and the clamping block (31) is mounted on the downward extending end of the supporting rod (29).
7. The sensor terminal block fall-off prevention device according to claim 6, wherein: a movable pin is arranged between the support rod (29) and the movable rod (30), and penetrates through the support rod (29) and the movable rod (30).
8. The sensor terminal block fall-off prevention device according to claim 4, wherein: the positive pole posts (24) and the negative pole posts (25) are symmetrically distributed, and the negative pole posts (25) are electrically connected with the piezoresistor (26).
9. The sensor terminal connection anti-drop device of claim 2, wherein: the touch block (7) is electrically connected with the power switch, and the shrinkage rod (27) is electrically connected with the motor (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111117692.4A CN113839270B (en) | 2021-09-24 | 2021-09-24 | Binding post wiring anti-drop device of sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111117692.4A CN113839270B (en) | 2021-09-24 | 2021-09-24 | Binding post wiring anti-drop device of sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113839270A CN113839270A (en) | 2021-12-24 |
| CN113839270B true CN113839270B (en) | 2024-01-12 |
Family
ID=78969712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111117692.4A Active CN113839270B (en) | 2021-09-24 | 2021-09-24 | Binding post wiring anti-drop device of sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113839270B (en) |
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| JP3179678U (en) * | 2012-08-20 | 2012-11-15 | 大興電線電纜股▲分▼有限公司 | Socket that can prevent plug terminals from coming off |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113839270A (en) | 2021-12-24 |
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