CN206759050U - The protection circuit and surge protector of family on line - Google Patents
The protection circuit and surge protector of family on line Download PDFInfo
- Publication number
- CN206759050U CN206759050U CN201720438643.3U CN201720438643U CN206759050U CN 206759050 U CN206759050 U CN 206759050U CN 201720438643 U CN201720438643 U CN 201720438643U CN 206759050 U CN206759050 U CN 206759050U
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- resistance
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- family
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- diode
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Abstract
The utility model provides a kind of protection circuit and surge protector of family on line, is related to the technical field of electric power electrical apparatus, including power subsystem and signal element；Power subsystem, for carrying out surge protection to the electric loop of family on line；Signal element, for carrying out surge protection to the communication line of family on line.The utility model can improve the safety in utilization of power distribution network, reduce economic loss caused by disaster destruction.
Description
Technical field
Electric power electrical apparatus technical field is the utility model is related to, more particularly, to a kind of protection circuit and electricity of family on line
Surge protector.
Background technology
Power distribution network is most basic living facilities in vast rural area, and power distribution network directly provides a user electric power, power distribution network
Characteristic distributions in rural area are：Distribution is wide, circuit is more and complexity etc..Rural area wide variety, user distribution is uneven to be caused
Power distribution network or collection are dredged, therefore very big in the probability that the season power distribution network that thunderstorm is concentrated is damaged.The distributor in field is negligent of pipe
Reason, concentrate the distributor power consumption of user big, factors cause Rural Power Distribution Network to be become big by the possibility being struck by lightning.Power distribution network
The apparatus insulated performance of basic configuration it is relatively low, the wide geogen interference in rural area, is very easy to be struck by lightning in addition,
When by being struck by lightning, lightning wave has higher temporary impact energy on the line, therefore it is required that equipment can bear higher energy
The temporary impact of amount, and most equipment causes resistance to over-pressed, resistance to flow horizontal excessively due to the Highgrade integration of electronic component at present
Decline, the phenomenon that communication equipment damages under lightning wave impulse by overvoltage is more and more, its consequence be possible cause it is whole
The outage of individual system, system down, large area user power failure and potential safety hazard etc..
Utility model content
In view of this, the purpose of this utility model is the protection circuit and surge protector for providing family on line, to improve
The safety in utilization of power distribution network, reduce economic loss caused by disaster destruction.
In a first aspect, the utility model embodiment provides a kind of protection circuit of family on line, wherein, including：Power supply list
Member and signal element；
The power subsystem, for carrying out surge protection to the electric loop of family on line；
The signal element, for carrying out surge protection to the communication line of the family on line；
Also include ground protection line PE；
The ground protection line PE is connected with the power subsystem and the signal element respectively, for joining to the family
Line carries out surge protector；
The signal element includes：
Gas-discharge tube GDT2 first end is connected with resistance R1 one end, the second end of the gas-discharge tube GDT2
It is connected with resistance R2 one end, the other end of the resistance R1 presses down with Transient Suppression Diode TVS1 one end and transient state respectively
Diode TVS3 processed one end is connected, the other end of the resistance R2 one end with Transient Suppression Diode TVS2 and institute respectively
The other end for stating Transient Suppression Diode TVS3 is connected, and the other end and the transient state of the Transient Suppression Diode TVS1 press down
The diode TVS2 processed other end is connected, the other end and the Transient Suppression Diode of the Transient Suppression Diode TVS1
The tie point of the TVS2 other end is connected with the 3rd end of the gas-discharge tube GDT2 and the ground protection line PE respectively；
The power subsystem includes：
Fuse F1, fuse F2 and fuse F3 one end are connected with live wire L1, live wire L2 and live wire L3 respectively, institute
State fuse F1, the fuse F2 and the fuse F3 other end respectively with piezo-resistance RV1, piezo-resistance RV2 and
Piezo-resistance RV3 one end is connected, and the piezo-resistance RV1, the piezo-resistance RV2 and the piezo-resistance RV3's is another
One end is connected and is connected respectively with gas-discharge tube GDT1 one end and zero line N, and the gas-discharge tube GDT1's is another
End is connected with the ground protection line PE.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, in addition to indicator unit；
The indicator unit is connected with the power subsystem, for being supervised to the electric power thus supplied of the power subsystem
Survey, obtain indication signal.
With reference to the first possible embodiment of first aspect, the utility model embodiment provides the of first aspect
Two kinds of possible embodiments, wherein, the indicator unit includes：
Resistance R3 one end is connected with the fuse F3 and the piezo-resistance RV3 respectively, and the resistance R3's is another
One end is connected with diode D1 anode, resistance R4 one end respectively with the fuse F2 and the piezo-resistance RV2 phases
Connection, the other end of the resistance R4 is connected with diode D2 anode, resistance R5 one end respectively with the fuse F1
It is connected with the piezo-resistance RV1, the other end of the resistance R5 is connected with diode D3 anode, the diode D1
Negative electrode, the negative electrode of the diode D2 and the negative electrode anode with LED 1, luminous respectively of the diode D3
The anode of diode (LED) 2 is connected with the anode of LED 3, negative electrode, the hair of the LED 1
The negative electrode of optical diode LED2 negative electrode and the LED 3 is connected with the piezo-resistance RV1.
Second aspect, the utility model embodiment also provide a kind of surge protector, wherein, including：Shell and such as take up an official post
The protection circuit of family on line described in one；
Connection jaws are provided with the shell, the protection circuit of the family on line is arranged at outside described by the connection jaws
The inside of shell.
With reference to second aspect, the utility model embodiment provides the first possible embodiment of second aspect, its
In, indicator lamp is additionally provided with the shell, the indicator lamp is arranged at the surface of the shell；
The indicator lamp, for being lighted or being extinguished according to indication signal.
With reference to second aspect, the utility model embodiment provides second of possible embodiment of second aspect, its
In, the shell is enhancing flame retardant plastics.
With reference to second aspect, the utility model embodiment provides second of possible embodiment of second aspect, its
In, the quantity of the indicator lamp is three.
The protection circuit and surge protector of a kind of family on line provided by the utility model, it is related to the skill of electric power electrical apparatus
Art field, including power subsystem and signal element；Power subsystem, for carrying out surge protection to the electric loop of family on line；Letter
Number unit, for carrying out surge protection to the communication line of family on line.The utility model can improve the safe to use of power distribution network
Property, reduce economic loss caused by disaster destruction.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the protection circuit schematic diagram for the family on line that the utility model embodiment one provides；
Fig. 2 is the protection circuit figure for the family on line that the utility model embodiment two provides；
Fig. 3 is the surge protector schematic diagram that the utility model embodiment five provides；
Fig. 4 is the surge protector and family on line schematic diagram that the utility model embodiment five provides.
Icon：
100- surge protectors；110- indicator units；120- power subsystems；130- signal elements；140- ground protections
Line PE；150- shells；160- indicator lamps；170- connection jaws；200- families on line.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
At present, characteristic distributions of the power distribution network in rural area are：Distribution is wide, circuit is more and complexity etc., the basic configuration of power distribution network
Apparatus insulated performance is relatively low, and the wide geogen interference in rural area, is very easy to be struck by lightning, is being struck by lightning in addition
When, lightning wave has higher temporary impact energy on the line, therefore it is required that equipment can bear the instantaneous punching of higher-energy
Hit, and most equipment causes resistance to over-pressed, resistance to flow horizontal of crossing to decline due to the Highgrade integration of electronic component at present, communication is set
More and more for the phenomenon damaged under lightning wave impulse by overvoltage, its consequence is possible to cause the operation of whole system
Interrupt, system down, large area user power failure and potential safety hazard etc..
Based on this, the protection circuit and surge protector of a kind of family on line that the utility model embodiment provides, Ke Yiti
The safety in utilization of high power distribution network, reduce economic loss caused by disaster destruction.
For ease of understanding the present embodiment, the guarantor first to a kind of family on line disclosed in the utility model embodiment
Protection circuit describes in detail.
Embodiment one：
Fig. 1 is the protection circuit schematic diagram for the family on line that the utility model embodiment one provides.
Reference picture 1, the protection circuit of family on line include：Indicator unit 110, power subsystem 120 and signal element 130.
Indicator unit 110 is connected with power subsystem 120.
In addition, the protection circuit of family on line can also include ground protection line PE140, power subsystem 120 and signal element
130 are connected with ground protection line PE140.
Indicator unit 110, for being monitored to the electric power thus supplied of power subsystem 120, obtain indication signal.
Power subsystem 120, for carrying out surge protection to the electric loop of family on line 200.
Signal element 130, for carrying out surge protection to the communication line of family on line 200.
Ground protection line PE140, for carrying out surge protection to family on line 200.
Specifically, ground protection line PE140 is non-required, the protection circuit of family on line can be in order to avoid connect in the present embodiment
Ground.Under the conditions of having good lightning protection, increase ground protection line PE140, ground protection line PE140 should be less than 0.5 meter, cut
Face area should be 3mm2。
The protection circuit of family on line is arranged inside shell 150, forms the surge protector of the Special lightning protection of family on line 200
100, applied to power line and the surge protection of data wire, when lightning surge or other overvoltage surges can quickly aerial drainage with pre-
Inductive surge caused by anti-has the characteristics that to exempt to be grounded low residual voltage, fast response time, waterproof to the device damage of protection.Power supply
The use of unit 120 is exempted from broken skin wiring card and is installed in parallel in family on line 200；Signal element 130 is connected using broken skin wiring card is exempted from
Or it is installed in parallel on signal wire.
The special surge protector 100 of family on line 200, for transient overvoltage should to be produced thunderbolt or operation sense circuit
This part surge energy absorbed and suppressed, avoid surge enter rear end equipment and damage.Signal element therein
130, when producing peak current or voltage suddenly for the interference because of the external world in communication line, the energy of surge protector 100
Shunting is turned within the extremely short time, so as to avoid infringement of the surge to other equipment in loop.
The nominal operating voltage of power subsystem 120 is 230/280V, and maximum Uc is 275/440V, is nominally put
Electric current is 5kA.On family on line protection circuit technical parameter in addition to above-mentioned partial content, it is in addition to residual
Pressure, insertion loss and transmission rate etc., correspond respectively to power subsystem 120 and signal element 130, specifically refer to table 1.
Table 1
Embodiment two：
Fig. 2 is the protection circuit figure for the family on line that the utility model embodiment two provides.
Reference picture 2, signal element 130 include：
Gas-discharge tube GDT2 first end is connected with resistance R1 one end, gas-discharge tube GDT2 the second end and electricity
Resistance R2 one end is connected, the resistance R1 other end one end with Transient Suppression Diode TVS1 and Transient Suppression Diode respectively
TVS3 one end is connected, the resistance R2 other end one end with Transient Suppression Diode TVS2 and Transient Suppression Diode respectively
The TVS3 other end is connected, and the Transient Suppression Diode TVS1 other end is connected with the Transient Suppression Diode TVS2 other end
Connect, the Transient Suppression Diode TVS1 other end is put with gas respectively with the tie point of the Transient Suppression Diode TVS2 other end
Fulgurite GDT2 the 3rd end is connected with ground protection line PE140.
, can also be suitable with cold-state resistance specifically, resistance R1 and resistance R2 can use common metal oxidation film resistance
Semistor, such as resettable fuse, its model LP60-010/030, LB180 (U).
It is signal element 130 and family on line when the mode of connection entered using end points 1 and end points 2, end points 3 and end points 4 go out
200 series connection；It is signal element 130 and family on line when the mode of connection entered using end points 1 and end points 3, end points 2 and end points 4 go out
200 is in parallel.
Embodiment three：
Reference picture 2, power subsystem 120 include：
Fuse F1, fuse F2 and fuse F3 one end are connected with live wire L1, live wire L2 and live wire L3 respectively, protect
Dangerous silk F1, fuse F2 and fuse the F3 other end respectively with piezo-resistance RV1, piezo-resistance RV2 and piezo-resistance RV3
One end is connected, piezo-resistance RV1, piezo-resistance RV2 and piezo-resistance the RV3 other end be connected and respectively with gas discharge
Pipe GDT1 one end is connected with zero line N, and the gas-discharge tube GDT1 other end is connected with ground protection line PE140.
Specifically, power subsystem 120 is made up of per phase to zero line N a gas-discharge tube GDT1 and a piezo-resistance,
When lightning current is to attack, piezo-resistance first starts, and limits wave head voltage, and subsequent gas-discharge tube GDT1 starts, high current of releasing,
In the case of imperfect earth, zero line L to live wire N1, live wire N2 and live wire N3 multiple device coordinates electric discharge, is effectively protected
The safe handling of equipment.
The zero line N of power subsystem 120 to ground protection line PE140 is connected by gas-discharge tube GDT1, is being grounded good feelings
Under condition, can also release lightning current well.
The gas-discharge tube GDT2 and gas-discharge tube GDT2 of ceramic material, and fuse (or referred to as semiconductor mistake
Voltage protector) dc breakdown voltage selected according to signal voltage amplitude, refer to table 2.When the low semiconductor of use voltage
During overvoltage protection device, it is necessary in earth terminal series connection glass discharge vessel；Protected when using semiconductor overvoltage of the voltage higher than 100V
Can not connect glass discharge vessel when protecting device.Power subsystem 120 in the protection circuit of the family on line is only applicable to not have in circuit
There is the occasion of continuous DC voltage.
Table 2
Example IV：
Referring to Figures 1 and 2, the protection circuit of family on line also includes indicator unit 110；
Indicator unit 110 is connected with power subsystem 120, for being monitored to the electric power thus supplied of power subsystem 120, obtains
To indication signal.
Indicator unit 110 includes：
Resistance R3 one end is connected with fuse F3 and piezo-resistance RV3 respectively, resistance the R3 other end and diode
D1 anode is connected, and resistance R4 one end is connected with fuse F2 and piezo-resistance RV2 respectively, the resistance R4 other end with
Diode D2 anode is connected, and resistance R5 one end is connected with fuse F1 and piezo-resistance RV1 respectively, and resistance R5's is another
One end is connected with diode D3 anode, the negative electrode difference of diode D1 negative electrode, diode D2 negative electrode and diode D3
The anode of anode, LED 2 and the anode of LED 3 with LED 1 are connected, and light
The negative electrode of the negative electrode of diode (LED) 1, the negative electrode of LED 2 and LED 3 with piezo-resistance RV1 phases
Connection.
Specifically, when surge protector 100 is because overheating, puncturing failure, fuse F1, fuse F2 or fuse F3 will
Automatically it is departed from from power network, the indication signal that the circuit that indicator unit 110 matches will be provided on terminated line.Than
Such as, when fuse F2 comes off, LED 2 will send green light and carry out police instruction.
Embodiment five：
Fig. 3 is the schematic diagram of surge protector 100 that the utility model embodiment five provides.
Reference picture 3, surge protector 100 include the protection circuit of shell 150 and family on line；Shell 150 is hindered using enhancing
Fire plastics.
The bottom surface of shell 150 is provided with connection jaws 170, and a part of electric wire in the protection circuit of family on line passes through connection jaws
170 are output to the external world, for being attached with interconnection line or other equipment.
The outer surface of shell 150 is provided with three indicator lamps 160, for being lighted or being extinguished according to indication signal.
Three indicator lamps 160 are respectively LED 1, LED 2 and LED 3.Work as surge protector
During 100 normal work, indicator lamp 160 shows green；When surge protector 100, which fails, to be departed from, indicator lamp 160 extinguishes.
Reference picture 4, surge protector 100 are connected use with family on line 200.Surge protector 100 is former using interpolar discharge
Reason, does equipotential Balance Treatment.When lightning surge or other overvoltage surges can quickly aerial drainage with sensing wave caused by preventing
Gush the device damage to protection.Have the characteristics that to exempt to be grounded low residual voltage, fast response time, waterproof.Open in addition, if in client institute
When the system data transmission of the family on line 200 used breaks down, first remove surge protector 100 and system checked again,
If system recovers normal, illustrate it is that surge protector 100 there is a problem, it is necessary to be changed to it.
The protection circuit and surge protector of a kind of family on line provided by the utility model, it is related to the skill of electric power electrical apparatus
Art field, including power subsystem and signal element；Power subsystem, for carrying out surge protection to the electric loop of family on line；Letter
Number unit, for carrying out surge protection to the communication line of family on line.The utility model can improve the safe to use of power distribution network
Property, reduce economic loss caused by disaster destruction.
A kind of protection circuit of family on line and the computer program of surge protector that the utility model embodiment is provided
Product, including the computer-readable recording medium of program code is stored, the instruction that described program code includes can be used for performing
Method described in previous methods embodiment, specific implementation can be found in embodiment of the method, will not be repeated here.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical solution of the utility model substantially or
Person says that the part of the part to be contributed to prior art or the technical scheme can be embodied in the form of software product,
The computer software product is stored in a storage medium, including some instructions are causing a computer equipment (can be with
Personal computer, server, or network equipment etc.) perform each embodiment methods described of the utility model whole or portion
Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), with
Machine access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with Jie of store program codes
Matter.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to before
Embodiment is stated the utility model is described in detail, it will be understood by those within the art that：It is any to be familiar with sheet
For those skilled in the art in the technical scope that the utility model discloses, it still can be to described in previous embodiment
Technical scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these are repaiied
Change, change or replace, do not make appropriate technical solution essence depart from the utility model embodiment technical scheme spirit and
Scope, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be described with right
It is required that protection domain be defined.
Claims (7)
- A kind of 1. protection circuit of family on line, it is characterised in that including：Power subsystem and signal element；The power subsystem, for carrying out surge protection to the electric loop of family on line；The signal element, for carrying out surge protection to the communication line of the family on line；Also include ground protection line PE；The ground protection line PE is connected with the power subsystem and the signal element respectively, for entering to the family on line Row surge protector；The signal element includes：Gas-discharge tube GDT2 first end is connected with resistance R1 one end, the second end and the electricity of the gas-discharge tube GDT2 Resistance R2 one end is connected, and the other end of the resistance R1 suppresses two with Transient Suppression Diode TVS1 one end and transient state respectively Pole pipe TVS3 one end is connected, the other end of the resistance R2 one end with Transient Suppression Diode TVS2 and the wink respectively The other end that state suppresses diode TVS3 is connected, and the other end and the transient state of the Transient Suppression Diode TVS1 suppress two The pole pipe TVS2 other end is connected, the other end of the Transient Suppression Diode TVS1 and the Transient Suppression Diode TVS2 The tie point of the other end be connected respectively with the 3rd end of the gas-discharge tube GDT2 and the ground protection line PE；The power subsystem includes：Fuse F1, fuse F2 and fuse F3 one end are connected with live wire L1, live wire L2 and live wire L3 respectively, the guarantor Dangerous silk F1, the fuse F2 and the fuse F3 other end respectively with piezo-resistance RV1, piezo-resistance RV2 and pressure-sensitive Resistance RV3 one end is connected, the piezo-resistance RV1, the piezo-resistance RV2 and the piezo-resistance RV3 other end Be connected and be connected respectively with gas-discharge tube GDT1 one end and zero line N, the other end of the gas-discharge tube GDT1 with The ground protection line PE is connected.
- 2. the protection circuit of family on line according to claim 1, it is characterised in that also including indicator unit；The indicator unit is connected with the power subsystem, for being monitored to the electric power thus supplied of the power subsystem, obtains To indication signal.
- 3. the protection circuit of family on line according to claim 2, it is characterised in that the indicator unit includes：Resistance R3 one end is connected with the fuse F3 and the piezo-resistance RV3 respectively, the other end of the resistance R3 It is connected with diode D1 anode, resistance R4 one end is connected with the fuse F2 and the piezo-resistance RV2 respectively, The other end of the resistance R4 is connected with diode D2 anode, resistance R5 one end respectively with the fuse F1 and described Piezo-resistance RV1 is connected, and the other end of the resistance R5 is connected with diode D3 anode, the moon of the diode D1 The negative electrode of pole, the negative electrode of the diode D2 and the diode D3 anode with LED 1, light-emitting diodes respectively Pipe LED2 anode is connected with the anode of LED 3, the negative electrode of the LED 1, described luminous two The negative electrode of pole pipe LED2 negative electrode and the LED 3 is connected with the piezo-resistance RV1.
- A kind of 4. surge protector, it is characterised in that including：Shell and family on line as described in any one of claims 1 to 3 Protection circuit；Connection jaws are provided with the shell, the protection circuit of the family on line is arranged at the shell by the connection jaws It is internal.
- 5. surge protector according to claim 4, it is characterised in that indicator lamp is additionally provided with the shell, it is described Indicator lamp is arranged at the surface of the shell；The indicator lamp, for being lighted or being extinguished according to indication signal.
- 6. surge protector according to claim 4, it is characterised in that the shell is enhancing flame retardant plastics.
- 7. surge protector according to claim 5, it is characterised in that the quantity of the indicator lamp is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720438643.3U CN206759050U (en) | 2017-04-21 | 2017-04-21 | The protection circuit and surge protector of family on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720438643.3U CN206759050U (en) | 2017-04-21 | 2017-04-21 | The protection circuit and surge protector of family on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759050U true CN206759050U (en) | 2017-12-15 |
Family
ID=60615238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720438643.3U Expired - Fee Related CN206759050U (en) | 2017-04-21 | 2017-04-21 | The protection circuit and surge protector of family on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759050U (en) |
-
2017
- 2017-04-21 CN CN201720438643.3U patent/CN206759050U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171215 Termination date: 20200421 |
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| CF01 | Termination of patent right due to non-payment of annual fee |