CN106235854B - A kind of curtain Controller for smart home based on Internet of Things - Google Patents
A kind of curtain Controller for smart home based on Internet of Things Download PDFInfo
- Publication number
- CN106235854B CN106235854B CN201610804954.7A CN201610804954A CN106235854B CN 106235854 B CN106235854 B CN 106235854B CN 201610804954 A CN201610804954 A CN 201610804954A CN 106235854 B CN106235854 B CN 106235854B
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- Prior art keywords
- crossbeam
- internet
- things
- column
- smart home
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- 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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- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000005728 strengthening Methods 0.000 claims abstract description 7
- 239000013078 crystal Substances 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 8
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 5
- 230000008054 signal transmission Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 5
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 description 3
- 101000768061 Escherichia phage P1 Antirepressor protein 1 Proteins 0.000 description 3
- 101000796932 Homo sapiens ADP/ATP translocase 1 Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000837 restrainer Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
- A47H2005/025—Devices for opening and closing curtains controlled by electronic sensors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Curtains And Furnishings For Windows Or Doors (AREA)
- Blinds (AREA)
- Selective Calling Equipment (AREA)
Abstract
The present invention relates to a kind of curtain Controller for smart home based on Internet of Things, including wireless communication terminal and curtain mechanism, the curtain mechanism includes column, crossbeam in column top is set, several be arranged fills holder in the barb of below the crossbeam and the top that is arranged above crossbeam, in the curtain Controller for smart home based on Internet of Things, it can ensure that crossbeam is mounted on the designated position of column by position-limit mechanism, it is able to confirm that crossbeam is installed in place by detent mechanism simultaneously, and, driving wheel is sequentially connected by conveyer belt and driven wheel, conveyer belt is two-sided strengthening core dentation conveyer belt, ensure that each barb can in conveyer belt reliable mobile, improve the reliability of system；Moreover, in wireless communication line, the SAW filter being made up of inductance and the second capacitance not only ensure that the reliability of wireless signal transmission, also improve production technology, reduce design cost, improves the practicability and practical value of system.
Description
Technical field
The present invention relates to a kind of curtain Controller for smart home based on Internet of Things.
Background technology
Smart home is the embodiment of the Thingsization under the influence of internet.Smart home will be in family by technology of Internet of things
Various equipment (such as audio & video equipment, lighting system, curtain control, airconditioning control, safety-protection system, Digital Theater System, audio-visual clothes
Business device, shadow cabinet system, network home appliance etc.) it connects together, home wiring control, Lighting control, remote control using telephone, indoor and outdoor are provided
The multiple functions such as remote control, burglar alarm, environmental monitoring, HVAC control, infrared forwarding and programmable Timer control and means.With
Common household is compared, and smart home not only has traditional inhabitation function, has both building, network communication, information household appliances, equipment certainly
Dynamicization provides comprehensive information exchange function, and even various energy expenditures save fund.
In existing smart home, curtain Controller can carry out intelligentized control method to curtain, improve user's
Comfort, but in existing curtain Controller, when installation, due to lacking good location measure, be easy to make
It is not in place at installing, after long-term work, it may occur that the phenomenon that component damage, and due to the transmission of internal driving mechanism
Band lacks good locking ability, and it is not in place when mobile to result in curtain, reduces the reliability of system；Not only such as
This ensures that user is monitored system in existing control system by wireless communication module, in systematic procedure,
Due to the LC oscillating circuits in present wireless telecommunications transmitting module, influenced by distributed constant too big, frequency drift is more tight
Weight, stability is bad, and debugs complexity, to reduce the reliability of wireless telecommunications, affects the practicability of control system.
Invention content
The technical problem to be solved by the present invention is to：For overcome the deficiencies in the prior art, it provides a kind of based on Internet of Things
Curtain Controller for smart home.
The technical solution adopted by the present invention to solve the technical problems is：It is a kind of based on Internet of Things for smart home
Curtain Controller, including wireless communication terminal and the curtain mechanism with wireless communication terminal wireless connection, the curtain mechanism
Including column, it is arranged and is filled in the barb of below the crossbeam and the top that is arranged above crossbeam in the crossbeam of column top, several be arranged
Holder；
The junction of the column and crossbeam is equipped with position-limit mechanism and detent mechanism；
Central control machine structure is additionally provided on the column, the central control machine structure includes central control module and center
Display interface, control button and the buzzer of control module electrical connection；
The crossbeam is internally provided with driving mechanism, and the driving mechanism includes driving wheel, driven wheel and conveyer belt, described
Driving wheel and driven wheel are located at the both ends of the inside of conveyer belt, and the driving wheel is connected by conveyer belt and driven wheel transmission
It connects, the conveyer belt is two-sided strengthening core dentation conveyer belt, and each barb is uniformly arranged in conveyer belt；
Further include wireless communication module in the column, the wireless communication module includes wireless communication line, the nothing
Line communicating circuit includes resistance, diode, triode, inductance, antenna, the first capacitance, the second capacitance and crystal oscillator, the triode
Emitter ground connection, the base stage of the triode connect with the parallel circuit of resistance and diode, the base stage of the triode and
The anode of diode connects, and the base stage of the triode is grounded by the series circuit that crystal oscillator and the first capacitance form, and described three
The collector of pole pipe is connected by the external 5V DC voltage power supplies of inductance, the collector of the triode by the second capacitance and antenna
Connect, the inductance be equipped with center line, the center line respectively with crystal oscillator and the first capacitance connection.
Preferably, in order to ensure that crossbeam and column are installed in place, the position-limit mechanism includes the extension being arranged on crossbeam
Hook and the hook groove being arranged on column, the hook are matched with hook groove.
Preferably, accurately being detected in order to be installed in place to crossbeam and column, the detent mechanism includes setting
The positioning unit set the locating slot on crossbeam and be arranged on column, the positioning unit includes shell, bead and positioning
Spring, the shell are internally provided with groove, and the notch in groove is arranged in the bead, and the retaining spring is arranged in groove
Interior, the bead is connected by the bottom of retaining spring and groove, and pressure sensor is equipped in the locating slot.
Preferably, direct current generator has the characteristics that driving capability is strong and noise is low, the driving wheel is sequentially connected with directly
The operating voltage of galvanic electricity machine, the direct current generator is 24V.
Preferably, being accurately controlled in order to the opening degree to curtain, the crossbeam is equipped with Distance-sensing
Device.
Preferably, in order to ensure that the cruising ability of system, the column are internally provided with accumulator, the accumulator is
Trifluoro lithium battery.
Preferably, the display content of liquid crystal display is more, to improve the practicability of system, the display interface is
Liquid crystal display.
Preferably, in order to improve the operability of system, the control button is touch key.
The invention has the advantages that limit should be passed through based in the curtain Controller for smart home of Internet of Things
Position mechanism can ensure that crossbeam is mounted on the designated position of column, while be able to confirm that crossbeam is installed in place by detent mechanism,
Moreover, driving wheel is sequentially connected by conveyer belt and driven wheel, conveyer belt is two-sided strengthening core dentation conveyer belt, ensure that respectively to fall
Hook can in conveyer belt reliable mobile, improve the reliability of system；Moreover, in wireless communication line, pass through electricity
The SAW filter of sense and the second capacitance composition, not only ensure that the reliability of wireless signal transmission, also improves production technology,
Design cost is reduced, the practicability and practical value of system are improved.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of the curtain Controller for smart home based on Internet of Things of the present invention；
Fig. 2 is that the structure of the position-limit mechanism of the curtain Controller for smart home based on Internet of Things of the present invention is shown
It is intended to；
Fig. 3 is that the structure of the detent mechanism of the curtain Controller for smart home based on Internet of Things of the present invention is shown
It is intended to；
Fig. 4 is that the structure of the driving mechanism of the curtain Controller for smart home based on Internet of Things of the present invention is shown
It is intended to；
Fig. 5 is the electricity of the wireless communication line of the curtain Controller for smart home based on Internet of Things of the present invention
Road schematic diagram；
In figure：1. wireless communication terminal, 2. columns, 3. crossbeams, 4. top dress holders, 5. barbs, 6. display interfaces, 7. controls
Button, 8. buzzers, 9. position-limit mechanisms, 10. detent mechanisms, 11. driving wheels, 12. conveyer belts, 13. driven wheels, 9-1. hooks,
9-2. hook grooves, 10-1. shells, 10-2. beades, 10-3. retaining springs, R1. resistance, D1. diodes, Q1. triodes, L1.
Inductance, ANT1. antennas, the first capacitances of C1., the second capacitances of C2., X1. crystal oscillators.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As Figure 1-Figure 5, a kind of curtain Controller for smart home based on Internet of Things, including wireless telecommunications
Terminal 1 and the curtain mechanism being wirelessly connected with wireless communication terminal 1, the curtain mechanism include column 2, setting on the top of column 2
The crossbeam 3 at end, several barbs 5 being arranged below crossbeam 3 and the top being arranged above crossbeam 3 fill holder 4；
The column 2 and the junction of crossbeam 3 are equipped with position-limit mechanism 9 and detent mechanism 10；
Central control machine structure is additionally provided on the column 2, the central control machine structure includes central control module and center
Display interface 6, control button 7 and the buzzer 8 of control module electrical connection；
The crossbeam 3 is internally provided with driving mechanism, and the driving mechanism includes driving wheel 11, driven wheel 13 and conveyer belt
12, the driving wheel 11 and driven wheel 13 are located at the both ends of the inside of conveyer belt 12, and the driving wheel 11 passes through conveyer belt
12 are sequentially connected with driven wheel 13, and the conveyer belt 12 is two-sided strengthening core dentation conveyer belt, and each barb 5 is uniformly arranged on transmission
In band 12；
Further include wireless communication module in the column 2, the wireless communication module includes wireless communication line, the nothing
Line communicating circuit includes resistance R1, diode D1, triode Q1, inductance L1, antenna ANT1, the first capacitance C1, the second capacitance C2
It is grounded with the emitter of crystal oscillator X1, the triode Q1, the base stage of the triode Q1 is in parallel with resistance R1 and diode D1
Circuit connects, and the base stage of the triode Q1 is connect with the anode of diode D1, and the base stage of the triode Q1 passes through crystal oscillator X1
With the series circuit ground connection of the first capacitance C1 compositions, the collector of the triode Q1 passes through the external 5V direct currents piezoelectricity of inductance L1
The collector in source, the triode Q1 is connect by the second capacitance C2 with antenna ANT1, and the inductance L1 is equipped with center line, described
Center line is connect with crystal oscillator X1 and the first capacitance C1 respectively.
Preferably, in order to ensure that crossbeam 3 and column 2 are installed in place, the position-limit mechanism 9 includes being arranged on crossbeam 3
Hook 9-1 and the hook groove 9-2 that is arranged on column 2, the hook 9-1 matched with hook groove 9-2.
Preferably, in order to which crossbeam 3 and column 2 are installed in place and are accurately detected, the detent mechanism 10 wraps
The positioning unit for including the locating slot being arranged on crossbeam 3 and being arranged on column 2, the positioning unit include shell 10-1, glass
Glass pearl 10-2 and retaining spring 10-3's, the shell 10-1 is internally provided with groove, and the bead 10-2 is arranged in groove
Notch, the retaining spring 10-3 are arranged in groove, the bottom that the bead 10-2 passes through retaining spring 10-3 and groove
Connection, the locating slot is interior to be equipped with pressure sensor.
Preferably, direct current generator has the characteristics that driving capability is strong and noise is low, the driving wheel 11 is sequentially connected with
The operating voltage of direct current generator, the direct current generator is 24V.
Preferably, being accurately controlled in order to the opening degree to curtain, the crossbeam 3 is equipped with Distance-sensing
Device 14.
Preferably, in order to ensure that the cruising ability of system, the column 2 are internally provided with accumulator, the accumulator
For trifluoro lithium battery.
Preferably, the display content of liquid crystal display is more, to improve the practicability of system, the display interface 6
For liquid crystal display.
Preferably, in order to improve the operability of system, the control button 7 is touch key.
In fact：In the wireless communication line, based on inductance L1 and the second capacitance C2, SAW filter is constituted,
With small, light-weight advantage, and centre frequency can be made high, and relative bandwidth is wider, has ideal rectangle coefficient
Selecting frequency characteristic.Unilateral processing technology identical with integrated circuit technology can be used in this filter, is simple to manufacture, at low cost,
Remoldability and design flexibility are high, can mass production and processing, be a kind of using increasingly extensive filter.
In the curtain Controller for smart home based on Internet of Things, wireless communication module, for ensureing user
Remote monitoring is carried out to system, wherein in wireless communication line, filtered by the sound table of inductance L1 and the second capacitance C2 compositions
Device not only ensure that the reliability of wireless signal transmission, also improve production technology, reduce design cost, improves system
Practicability and practical value.Moreover, resistance R1 and diode D1 form protection circuit, prevent reverse spike voltage to channel radio
The influence for interrogating circuit, to improve the reliability of wireless communication line.
In the curtain Controller for smart home based on Internet of Things, wireless communication terminal 1 is used for window curtain driving mechanism
Structure carries out remote monitoring, improves the intelligence of system.In curtain mechanism, crossbeam 3 is arranged on the top of column 2, passes through limit
Position mechanism 9 can ensure that crossbeam 3 is mounted on the designated position of column 2, while be able to confirm that crossbeam 3 is installed by detent mechanism 10
In place, moreover, driving wheel 11 is sequentially connected by conveyer belt 12 and driven wheel 13, conveyer belt 12 transmits for two-sided strengthening core dentation
Band, ensure that each barb 5 can in conveyer belt 12 reliable mobile, improve the reliability of system.
In the curtain Controller for smart home based on Internet of Things, central control machine structure, be used for system into
Row intelligentized control method.Wherein, display interface 6 are used for carrying out real-time display to the job information of system, improve the practicality of system
Property；Control button 7 improves the operability of system for ensureing that user carries out live manipulation to system；Buzzer 8, is used for
Alarm is carried out, the reliability of system is improved.
Compared with prior art, position restrainer should be passed through based in the curtain Controller for smart home of Internet of Things
Structure 9 can ensure that crossbeam 3 is mounted on the designated position of column 2, while be able to confirm that crossbeam 3 is installed to by detent mechanism 10
Position, moreover, driving wheel 11 is sequentially connected by conveyer belt 12 and driven wheel 13, conveyer belt 12 transmits for two-sided strengthening core dentation
Band, ensure that each barb 5 can in conveyer belt 12 reliable mobile, improve the reliability of system；Moreover, in channel radio
It interrogates in circuit, by the SAW filter of inductance L1 and the second capacitance C2 compositions, not only ensure that the reliable of wireless signal transmission
Property, production technology is also improved, design cost is reduced, improves the practicability and practical value of system.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (8)
1. a kind of curtain Controller for smart home based on Internet of Things, which is characterized in that including wireless communication terminal
(1) and with wireless communication terminal (1) curtain mechanism being wirelessly connected, the curtain mechanism include column (2), are arranged in column
(2) crossbeam (3) on top, several barbs (5) being arranged below crossbeam (3) and the top being arranged above crossbeam (3) fill holder
(4)；
The column (2) and the junction of crossbeam (3) are equipped with position-limit mechanism (9) and detent mechanism (10)；
Central control machine structure is additionally provided on the column (2), the central control machine structure includes central control module, controlled with center
Display interface (6), control button (7) and the buzzer (8) of molding block electrical connection；
The crossbeam (3) is internally provided with driving mechanism, and the driving mechanism includes driving wheel (11), driven wheel (13) and transmission
Band (12), the driving wheel (11) and driven wheel (13) are located at the both ends of the inside of conveyer belt (12), the driving wheel
(11) it being sequentially connected by conveyer belt (12) and driven wheel (13), the conveyer belt (12) is two-sided strengthening core dentation conveyer belt,
Each barb (5) is uniformly arranged in conveyer belt (12)；
Further include wireless communication module in the column (2), the wireless communication module includes wireless communication line, described wireless
Communicating circuit include resistance (R1), diode (D1), triode (Q1), inductance (L1), antenna (ANT1), the first capacitance (C1),
Second capacitance (C2) and crystal oscillator (X1), the emitter ground connection of the triode (Q1), the base stage and resistance of the triode (Q1)
(R1) it is connected with the parallel circuit of diode (D1), the base stage of the triode (Q1) is connect with the anode of diode (D1), institute
The base stage for stating triode (Q1) is grounded by the series circuit that crystal oscillator (X1) and the first capacitance (C1) form, the triode (Q1)
Collector by the external 5V DC voltage power supplies of inductance (L1), the collector of the triode (Q1) passes through the second capacitance (C2)
Connect with antenna (ANT1), the inductance (L1) be equipped with center line, the center line respectively with crystal oscillator (X1) and the first capacitance
(C1) it connects.
2. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Position-limit mechanism (9) includes the hook groove (9-2) of the hook (9-1) being arranged on crossbeam (3) and setting on column (2), the extension
Hook (9-1) is matched with hook groove (9-2).
3. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Detent mechanism (10) includes the positioning unit of the locating slot being arranged on crossbeam (3) and setting on column (2), and the positioning is single
Member includes shell (10-1), bead (10-2) and retaining spring (10-3), and the shell (10-1) is internally provided with groove, institute
It states bead (10-2) and notch in groove is set, the retaining spring (10-3) is arranged in groove, the bead (10-
2) it is connect with the bottom of groove by retaining spring (10-3), pressure sensor is equipped in the locating slot.
4. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Driving wheel (11) is sequentially connected with direct current generator, and the operating voltage of the direct current generator is 24V.
5. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Crossbeam (3) is equipped with range sensor (14).
6. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Column (2) is internally provided with accumulator, and the accumulator is trifluoro lithium battery.
7. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Display interface (6) is liquid crystal display.
8. the curtain Controller for smart home based on Internet of Things as described in claim 1, which is characterized in that described
Control button (7) is touch key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804954.7A CN106235854B (en) | 2016-09-05 | 2016-09-05 | A kind of curtain Controller for smart home based on Internet of Things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804954.7A CN106235854B (en) | 2016-09-05 | 2016-09-05 | A kind of curtain Controller for smart home based on Internet of Things |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106235854A CN106235854A (en) | 2016-12-21 |
| CN106235854B true CN106235854B (en) | 2018-10-23 |
Family
ID=57599534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610804954.7A Expired - Fee Related CN106235854B (en) | 2016-09-05 | 2016-09-05 | A kind of curtain Controller for smart home based on Internet of Things |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106235854B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9095907B2 (en) * | 2012-09-17 | 2015-08-04 | Qmotion Incorporated | Drapery tube incorporating batteries within the drapery tube, with a stop for facilitating the loading and unloading of the batteries |
| CN103110330A (en) * | 2013-02-21 | 2013-05-22 | 上海海事大学 | Automatic curtain control device |
| CN203970042U (en) * | 2014-07-04 | 2014-12-03 | 重庆瑞坤科技发展有限公司 | A kind of Intelligent household curtain controller |
| CN204743662U (en) * | 2015-07-17 | 2015-11-11 | 杭州晶一智能科技有限公司 | Intelligence electric window curtain based on cell -phone network |
| CN204754569U (en) * | 2015-07-30 | 2015-11-11 | 杭州晶一智能科技有限公司 | But intelligent electric window of long -range inquiry of cell -phone and remote control |
| CN105534254A (en) * | 2015-12-30 | 2016-05-04 | 苏州绿尚智能科技有限公司 | Remotely controlled curtain |
-
2016
- 2016-09-05 CN CN201610804954.7A patent/CN106235854B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106235854A (en) | 2016-12-21 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180914 Address after: 419500 fire horse Chong Industrial Park, Chenxi, Huaihua, Hunan Applicant after: HUNAN TAIDAXUN TECHNOLOGY CO.,LTD. Address before: 510000 228 Liwan District flower road, Guangzhou, Guangdong, two, No. 2001-2, Guangzhou auto parts market. Applicant before: GUANGZHOU CHANXIN BIOTECHNOLOGY Co.,Ltd. |
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Granted publication date: 20181023 |