CN109638573B - Electrical hazard sensing socket - Google Patents
Electrical hazard sensing socket Download PDFInfo
- Publication number
- CN109638573B CN109638573B CN201910101774.6A CN201910101774A CN109638573B CN 109638573 B CN109638573 B CN 109638573B CN 201910101774 A CN201910101774 A CN 201910101774A CN 109638573 B CN109638573 B CN 109638573B
- Authority
- CN
- China
- Prior art keywords
- conductive
- socket
- socket cover
- key cap
- elastic member
- 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.)
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Links
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- 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
- H01R13/66—Structural association with built-in electrical component
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a potential electricity hazard sensing socket which comprises a socket cover, a control circuit board and a touch key, wherein the socket cover is provided with a mounting hole, the control circuit board is arranged on one side of the socket cover, a feeding point and a micro switch are arranged on the surface, facing the socket cover, of the control circuit board, the feeding point and the micro switch are arranged at intervals, the touch key comprises a conductive key cap, an insulating elastic piece and a conductive spring, the insulating elastic piece is positioned between the socket cover and the control circuit board, the conductive key cap passes through the mounting hole and is arranged on the insulating elastic piece, the insulating elastic piece is provided with a spring hole, the conductive spring passes through the spring hole to electrically communicate the conductive key cap with the feeding point, a bulge is arranged at the position, corresponding to the micro switch, of the insulating elastic piece, when the conductive key cap is pressed, the bulge is pressed against the micro switch, and the conductive spring provides resilience force for the conductive key cap after being pressed and released. The technical scheme of the invention can simplify the control key structure of the power utilization hidden danger sensing socket.
Description
Technical Field
The invention relates to the technical field of sockets, in particular to a socket capable of sensing hidden danger of electricity consumption.
Background
Some existing intelligent detection sockets can detect residual current and cut off power supply, but can not detect dangerous hidden dangers which can be found by carrying out various data acquisition analysis on a power supply system such as wrong wiring sequence of a zero line and a fire wire, abnormal power supply voltage, missing ground wire, faults and the like, the judgment needs to be firstly determined whether the wiring sequence of the zero line and the fire wire is correct, when the judgment is carried out, an external potential reference point formed by human body touch is needed by an analysis circuit, whether the accessed line sequence is correct is judged by analyzing the voltage of the point and the zero line and the voltage of the fire wire, and an absolute safe touch key is formed after the reference point is isolated by a current limiting resistor and a safety capacitor due to safety requirements.
Disclosure of Invention
The invention mainly aims to provide a power utilization hidden danger sensing socket, which aims to simplify a control key structure on a power utilization hidden danger sensing socket cover, and utilizes one key to realize a touch key meeting the requirement of an electric safety distance and a compound function key of a micro switch for providing control and setting functions.
In order to achieve the above object, the present invention provides a socket for sensing hidden danger of electricity consumption, comprising:
A socket cover provided with a mounting hole;
The control circuit board is arranged on one side of the socket cover, the surface of the control circuit board facing the socket cover is provided with a micro switch and a feeding point, the feeding point and the micro switch are arranged at intervals, and
The touch key comprises a conductive key cap, an insulating elastic piece and a conductive spring, wherein the insulating elastic piece is positioned between the socket cover and the control circuit board, the conductive key cap passes through the mounting hole and is mounted on the insulating elastic piece, the insulating elastic piece is provided with a spring hole, the conductive spring passes through the spring hole and is connected with the conductive key cap and the feed point, and a bulge is arranged at the position of the insulating elastic piece corresponding to the micro switch;
when the conductive key cap is pressed, the bulge is propped against the micro switch, and the conductive spring provides resilience force for the conductive key cap after being pressed and released.
Optionally, the insulating elastic piece includes set firmly in the fixed block of socket lid, be used for installing electrically conductive button cap and be equipped with bellied division board, connect the fixed block with the elastic connection arm of division board.
Optionally, the elastic connection arm is arc-shaped, and an arc-shaped convex surface of the elastic connection arm faces the socket cover.
Optionally, the conductive key cap is provided with an opening, a stop convex ring is arranged at the opening end of the conductive key cap, the end face of the opening end is abutted to the isolation plate, and the stop convex ring is clamped at the edge of the mounting hole.
Optionally, the isolation board corresponds the position of mounting hole is equipped with the erection column, electrically conductive button cap cover is located the erection column, the erection column is equipped with the spring hole, the spring hole sets up along the axial of erection column.
Optionally, the division board is equipped with the restriction the spacing protruding muscle of electrically conductive button cap removal, spacing protruding muscle ring is located the erection column.
Optionally, the mounting column is located the division board is kept away from the one end of elastic connection arm, spacing protruding muscle is semi-annular.
Optionally, a reinforcing rib is arranged at one end of the isolation plate connected with the elastic connecting arm.
Optionally, the elastic piece is welded and fixed on the socket cover, or the elastic piece is clamped and fixed on the socket cover.
Optionally, the insulating elastic member is welded and fixed to the socket cover, and the fixing block is provided with a fixing hole for welding and fixing. Optionally, the elastic piece is welded and fixed on the socket cover, or the elastic piece is clamped and fixed on the socket cover.
Optionally, the elastic piece is welded and fixed on the socket cover, and the fixing block is provided with a fixing hole for welding and fixing.
According to the technical scheme, the conductive key cap and the insulating elastic piece are arranged on the socket cover, so that a user can trigger the touch key switch when touching the conductive key cap only, sensing signals are transmitted to an internal circuit of the control circuit board through the conductive key cap, the conductive spring and the feed point to provide potential reference points, when pressing force is applied to the conductive key cap, the touch key switch is triggered, the micro switch serving as a mechanical switch is triggered on the control circuit board, signal input of two switch circuits can be controlled by one key at the same time, the touch key meeting the requirement of an electrical safety distance and the composite function key of the micro switch for providing control and setting functions are realized by one key, the number of keys on the socket cover is reduced, the structure is simplified, materials are saved, meanwhile, the control of the sensing socket with potential hazards is more intelligent, the operation is more convenient, and the experience of the user is improved. The electric safety distance between the micro switch and the touch key is increased by using the insulating elastic piece, and the conductive spring not only conducts the feed point on the control circuit board and the conductive key cap, but also provides the return force for resetting the conductive key cap, so that the structure is simple, and the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of one embodiment of a perceived socket of the present invention;
FIG. 2 is a schematic view of an assembly of the receptacle cover and the touch switch of FIG. 1;
FIG. 3 is a schematic diagram of the touch switch of FIG. 1;
FIG. 4 is a schematic view of the assembly of the elastic member and the conductive key cap of FIG. 1 from a perspective;
fig. 5 is an assembled schematic view of the elastic member and the conductive key cap in fig. 1 at another view angle.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout is meant to include three side-by-side schemes, for example, "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a power utilization hidden danger sensing socket.
In an embodiment of the present invention, as shown in fig. 1 to 3, the power consumption hidden danger sensing socket includes:
A socket cover 1 provided with a mounting hole 11;
A control circuit board 2 mounted on one side of the socket cover 1, the control circuit board 2 having a feeding point 21 and a micro switch 22 on a surface facing the socket cover 1, the feeding point 21 and the micro switch 22 being spaced apart, and
The touch key 3 comprises a conductive key cap 31, an insulating elastic member 32 and a conductive spring 33, wherein the insulating elastic member 32 is positioned between the socket cover 1 and the control circuit board 2, the conductive key cap 31 is installed on the insulating elastic member 32 through the installation hole 11, the insulating elastic member 32 is provided with a spring hole 3223, the conductive spring 33 is penetrated through the spring hole 3223 so as to electrically connect the conductive key cap and the feed point 21 with the conductive key cap 31, and a protrusion 3221 is arranged at the position of the insulating elastic member corresponding to the micro switch 22;
When the conductive key cap 31 is pressed, the protrusion 3221 presses the micro switch 22, and the conductive spring 33 provides a resilience force for the conductive key cap 31 after the pressing release.
According to the technical scheme, the conductive key cap and the insulating elastic piece are arranged on the socket cover, so that a user can trigger the touch key when touching the conductive key cap only, the sensing signal is transmitted to the internal circuit of the control circuit board through the conductive key cap, the conductive spring and the feed point to provide a potential reference point, when the pressing force is applied to the conductive key cap, the touch key switch is triggered, the micro switch serving as a mechanical switch is triggered on the control circuit board, and therefore signal input of two switch circuits can be controlled by one key at the same time, the touch key meeting the requirement of an electrical safety distance and the composite function key of the micro switch for providing control and setting functions are realized by one key, the number of keys on the socket cover is reduced, the structure is simplified, materials are saved, meanwhile, the control of the sensing socket with potential hazards is more intelligent, the operation is more convenient, and the experience of the user is improved. The electric safety distance between the micro switch and the touch key is increased by using the insulating elastic piece, and the conductive spring not only conducts the feed point on the control circuit board and the conductive key cap, but also provides the return force for resetting the conductive key cap, so that the structure is simple, and the cost is reduced.
In this embodiment, the micro switch 22 is made of metal, and the insulating elastic member 32 is made of insulating material, so as to avoid the communication between the touch key 3 and the two switch control circuits of the micro switch 22, and ensure that the two switches do not interfere with each other and work normally.
The touch key 3 contacts the human body through the conductive key cap 31 to provide an external potential reference point, and the micro switch 22 is used as a control key for controlling the on or off of the detection of the power utilization hidden danger sensing socket or closing an alarm sent by the power utilization hidden danger sensing socket.
In the present embodiment, the insulating elastic member 32 includes a fixing block 321 fixed to the socket cover 1, a spacer 322 for mounting the conductive key cap 31 and having the protrusions 3221, and an elastic connection arm 323 connecting the fixing block 321 and the spacer 322. In this way, the spacer 322 is elastically connected to the fixed block 321 by the elastic connection arm 323 to move between the control circuit board 2 and the socket cover 1, so that the protrusion 3221 has a first position disposed above the micro switch 22 and a second position pressing against the micro switch 22.
It will be appreciated that the insulating elastic member 32 is disposed between the control circuit board 2 and the socket cover 1, the socket cover 1 has a first side facing the control circuit board 2 and a second side facing away from the first side, the second side is an outer surface of the electric potential sensing socket, a jack for inserting a plug is disposed on the second side, the insulating elastic member 32 is disposed on the first side, and the conductive key cap 31 is threaded from the first side to the second side through the mounting hole 11 for user operation. In this embodiment, the conductive button cap 31 is disposed on one surface of the isolating plate 322 facing the socket shell, the protrusion 3221 is disposed away from the conductive button cap 31, and is disposed on the other surface of the isolating plate 322 facing the control circuit board 2, so that when the conductive button cap 31 is pressed, the protrusion 3221 presses the micro switch 22 of the control circuit board 2.
Further, in this embodiment, referring specifically to fig. 3, the elastic connection arm 323 is disposed in an arc shape, and the arc convex surface of the elastic connection arm 323 faces the socket cover 1. In this way, it is simply achieved that the conductive spring 33 gives the conductive key cap 31 a return force to return after the conductive key cap 31 is pressed, and the elastic connection arm 323 gives the spacer 322 a return force so that the protrusion 3221 on the spacer 322 returns from the second position to the first position. In other embodiments, the elastic connection arm 323 may be configured to have a wavy shape, so as to have a deformed elastic force.
Further, in this embodiment, the conductive key cap 31 is detachably mounted on the insulating elastic member 32, so that maintenance, disassembly and material recycling are facilitated.
In this embodiment, the conductive key cap 31 is clamped between the insulating elastic member and the mounting hole 11 of the socket cover 1, referring specifically to fig. 5, the conductive key cap 31 has an opening 311, and the opening 311 end of the conductive key cap 31 is provided with a stop collar 312, the position of the isolation plate 322 corresponding to the mounting hole 11 is provided with a mounting post 3222, the conductive key cap 31 is sleeved on the mounting post 3222, the end face of the opening 311 end is abutted to the isolation plate 322, and the stop collar 312 is clamped on the edge of the mounting hole 11. Therefore, the installation of the conductive key cap 31 is simply realized, other parts are not needed to fix the conductive key cap 31, and materials are saved. Furthermore, the mounting post 3222 is connected to one end of the conductive button cap 31 in an arc shape, so as to avoid noise and abrasion caused by friction between the mounting post 3222 and the conductive button cap 31 when the conductive button cap 31 is pressed, and have better use feeling.
Further, in this embodiment, the mounting post 3222 is provided with a spring hole 3223 disposed along an axial direction, the spring hole 3223 is provided with a conductive spring 33 for connecting the conductive button cap 31 and the feeding point 21, the conductive spring is limited in the spring hole 3223, one end of the conductive spring is abutted to the conductive button cap 31, the other end of the conductive spring is abutted to the feeding point 21, and thus, the conductive button cap 31 is conveniently connected with the feeding point 21 of the control circuit board 2 by setting the mounting post 3222 to accommodate and fix the conductive spring 33, the connection of the conductive button cap 31 and the control circuit board 2 is realized by the electric spring, and the resilience force is provided for the conductive button cap 31 when the conductive button cap 31 is pressed, so that the conductive button cap 31 is convenient to reset, and the product structure is optimized.
Further, in this embodiment, the insulating elastic member 32 is welded and fixed to the socket cover 1, the fixing block 321 is provided with a fixing hole 3211 for welding and fixing, the insulating elastic member 32 is made of plastic material, and the fixing block 321 is fixed on the first side surface of the socket cover 1 by welding and hot melting, so that the insulating elastic member 32 is ensured to be firmly installed on the socket cover 1, and the reliability of the switch structure of the power utilization hidden danger sensing socket is improved. It will be appreciated that in other embodiments, the insulating elastic member 32 may be configured to be fastened to the socket cover 1, so that the insulating elastic member 32 may be stably installed.
Further, in this embodiment, the conductive button cap 31 is disposed at an end of the isolation plate 322 away from the elastic connection arm 323, the protrusion 3221 is disposed at an end of the sliding plate close to the elastic connection arm 323, so that the protrusion is pushed onto the micro switch 22 by pressing the conductive button cap 31 more easily, the isolation plate 322 is provided with a limiting rib 3224 limiting the movement of the conductive button cap 31, and the limiting rib is disposed on the isolation plate in a ring manner on the mounting post.
In this embodiment, the conductive key cap 31 is cylindrical, the mounting post is disposed at one end of the isolation board away from the elastic connection arm, the limiting rib 3224 is adapted to the conductive key cap 31 is semi-annular, the limiting rib 3224 is semi-encircling the conductive key cap 31, and the preparation material is reduced while the conductive key cap 31 is ensured to be stable. However, the present design is not limited thereto, and in other embodiments, the limiting ribs 3224 may be annular and disposed around the mounting posts 3222 to form an annular mounting groove adapted to mount the conductive key cap 31, so that the conductive key cap 31 is mounted more firmly.
Further, in this embodiment, a reinforcing rib 3225 is disposed at one end of the spacer 322 connected to the elastic connection arm 323, the reinforcing rib 3225 is disposed on one surface of the spacer 322 provided with the limiting rib 3224, the limiting ribs 3224 are connected, and the reinforcing rib 3225 is provided with a plurality of reinforcing ribs and extends from one end of the spacer 322 connected to the elastic connection arm 323 to the limiting rib 3224, so as to increase the structural strength of the insulating elastic member 32.
In this embodiment, by providing the reinforcing ribs 3225 and the limiting ribs 3224 on the isolating plate 322, an electrical gap and a creepage distance are increased, and electrical safety between the touch key 3 and the micro switch 22 is improved. Wherein, the reinforcing ribs 3225, the spacing ribs 3224 and the mounting posts 3222 are all on one surface of the isolating plate 322 and deviate from the protrusions 3221, so that one surface of the isolating plate 322 facing the control circuit board 2 is only provided with the protrusions 3221, so that the protrusions 3221 are correspondingly abutted to the micro-switches 22.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101774.6A CN109638573B (en) | 2019-01-30 | 2019-01-30 | Electrical hazard sensing socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910101774.6A CN109638573B (en) | 2019-01-30 | 2019-01-30 | Electrical hazard sensing socket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109638573A CN109638573A (en) | 2019-04-16 |
| CN109638573B true CN109638573B (en) | 2024-12-24 |
Family
ID=66064779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910101774.6A Active CN109638573B (en) | 2019-01-30 | 2019-01-30 | Electrical hazard sensing socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109638573B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296414B (en) * | 2020-02-21 | 2024-12-24 | 深圳市晟瑞科技有限公司 | Wall controller and smart home system |
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| CN203733679U (en) * | 2013-10-31 | 2014-07-23 | 艾默生电气公司 | Button device and controller including the same |
| CN209844110U (en) * | 2019-01-30 | 2019-12-24 | 捍防（深圳）实业有限公司 | Electrical hazard sensing socket |
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| ES2354826T3 (en) * | 2006-09-28 | 2011-03-18 | Siemens Aktiengesellschaft | CONTROL UNIT WITH CONTROL DEVICE. |
| CN202102633U (en) * | 2011-06-15 | 2012-01-04 | 南京工业职业技术学院 | Light signal system training platform of Santana 2000 cars |
| CN202502111U (en) * | 2012-03-27 | 2012-10-24 | 上海梅山钢铁股份有限公司 | Porous grounded power supply test contact device |
| CN202513398U (en) * | 2012-04-24 | 2012-10-31 | 史建设 | Multifunctional energy-saving socket |
| CN203536320U (en) * | 2012-11-19 | 2014-04-09 | 帕西·西姆公司 | Protection device and electrical wiring system including same |
| CN203205298U (en) * | 2013-03-26 | 2013-09-18 | 上海联影医疗科技有限公司 | Double signal-generating press key structure |
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| TWI607476B (en) * | 2016-02-03 | 2017-12-01 | 達方電子股份有限公司 | Keyswitch structure |
| CN205485956U (en) * | 2016-03-24 | 2016-08-17 | 合肥联宝信息技术有限公司 | Button, keyboard and electronic equipment |
| CN206041131U (en) * | 2016-08-30 | 2017-03-22 | 上海家的电气有限公司 | Socket with safety inspection function |
| CN106505378B (en) * | 2016-12-27 | 2018-11-02 | 余姚市嘉荣电子电器有限公司 | Intelligent wireless earth leakage protective socket |
| KR20180126203A (en) * | 2017-05-17 | 2018-11-27 | (주)코리아인코어테크놀러지 | Magnetic switch for explosion-proof |
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Patent Citations (4)
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| CN201303158Y (en) * | 2008-09-12 | 2009-09-02 | 龙岗区横岗保安联明电业塑胶制品厂 | Electric leakage protection plug |
| CN203339427U (en) * | 2013-06-13 | 2013-12-11 | 彭忠华 | Intelligent safety power socket |
| CN203733679U (en) * | 2013-10-31 | 2014-07-23 | 艾默生电气公司 | Button device and controller including the same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109638573A (en) | 2019-04-16 |
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