CN109495808A - A kind of bluetooth headset external member - Google Patents
A kind of bluetooth headset external member Download PDFInfo
- Publication number
- CN109495808A CN109495808A CN201910005400.4A CN201910005400A CN109495808A CN 109495808 A CN109495808 A CN 109495808A CN 201910005400 A CN201910005400 A CN 201910005400A CN 109495808 A CN109495808 A CN 109495808A
- Authority
- CN
- China
- Prior art keywords
- charging
- bluetooth headset
- clamping plate
- battery
- pedestal
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1016—Earpieces of the intra-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1033—Cables or cables storage, e.g. cable reels
Abstract
The invention discloses a kind of bluetooth headset external members, include storage box, and two be removably mounted in storage box bluetooth headset unit；Battery for charging for bluetooth headset unit is installed in storage box；Bluetooth headset unit includes headset main body；The battery of promising headset main body power supply is respectively set in each bluetooth headset unit；Bluetooth headset unit lower part is equipped with charging cable incorporating section；The charging cable for charging for battery being electrically connected with battery is installed in charging cable incorporating section；Charging cable can be extracted out out of charging cable incorporating section；Charging thread end is connected with the charging connector that can be electrically connected with the battery in storage box, and the charging connector of two bluetooth headset units can be detachably connected.User can extract charging cable out, be connected to the battery, and charge for battery, or two charging connectors are linked together, and carry convenient for user.
Description
Technical field
The invention belongs to bluetooth headset technical fields, and in particular to a kind of bluetooth headset external member.
Background technique
The Chinese patent literature that document number is CN206164798U discloses a kind of bluetooth headset and its charging unit, including
Charging bluetooth earphone device outer housing, insertion is provided with cell switch in the front surface of the charging bluetooth earphone device outer housing, and
MICRO charge port, the indigo plant are provided at the right positions of cell switch on charging bluetooth earphone device shell body front surface
The inside of tooth earphone charger case body is provided with type chamber at the top position of cell switch, and the opening of the type chamber is set
It is equipped with microscope carrier, charging thimble is provided on the microscope carrier and charging bluetooth earphone device magnet, the charging thimble are located at bluetooth ear
Between machine charger magnet and type chamber, when the utility model bluetooth headset is in non-working condition, taken using charging combination unit
The bluetooth headset is carried, wears bluetooth headset for a long time to avoid user, and attach together using the charging group and be set to the bluetooth ear
Machine charging has good market prospects to extend the stand-by time of the bluetooth headset.
In above-mentioned patent, when user during the motion, bluetooth headset is easy to fall, and bluetooth headset is caused to be lost；Simultaneously
Battery capacity built in bluetooth headset is smaller, and can not be charging bluetooth earphone during bluetooth headset is worn.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficienciess of the prior art, what offer will not lose easily
It can be a kind of bluetooth headset external member of charging bluetooth earphone during wearing.
Purpose to realize the present invention, is achieved using following technical scheme: a kind of bluetooth headset external member, includes to receive
Case, and two bluetooth headset units being removably mounted in the storage box；Be equipped in the storage box for for
The battery of bluetooth headset unit charging；The bluetooth headset unit includes headset main body；In each bluetooth headset unit respectively
The battery of promising headset main body power supply is set.
Bluetooth headset unit lower part is equipped with charging cable incorporating section；It is equipped in the charging cable incorporating section and battery electricity
The charging cable for charging for battery of connection；The charging cable can be extracted out out of charging cable incorporating section.
The charging thread end is connected with the charging connector that can be electrically connected with the battery in storage box, and described in two
The charging connector of bluetooth headset unit can be detachably connected.
As prioritization scheme: the charging connector is fixedly connected with permanent magnet far from one end of charging cable；Two indigo plants
Polarity of the permanent magnet far from charging connector one end on tooth headphone unit is opposite.
As prioritization scheme: the storage box lower end is removably connected with pedestal；The battery is mounted on the pedestal
It is interior；It can be electrically connected with charging connector there are two being set on the battery and then as the transmission of electricity connector of battery charging.
The earphone cavity for accommodating bluetooth headset unit is formed in the storage box；Bottom forms in the earphone cavity
For the connector slot in the transmission of electricity connector insertion earphone cavity.
As prioritization scheme: the pedestal lower end forms clamping plate tank；Clamping plate is rotatably connected in the clamping plate tank.
It is located at clamping plate tank side on the pedestal and forms the elastic slice tank being connected to clamping plate tank；The elastic slice tank
The U-shaped elastic slice that driving clamping plate and clamping plate tank inner top offset is installed between inner top and clamping plate upper end.
The storage box lower end position opposite with the two sidewalls for being parallel to clamping plate rotational plane forms multiple in inverted " L "
The clamping groove of shape；Being separately installed in the pedestal positioned at clamping plate two sides can make storage box opposite with pedestal by clamping plate driving
Fixed clamping mechanism.
The two sidewalls upper end that the pedestal is parallel to clamping plate rotational plane forms pedestal tank；The clamping mechanism includes
Multiple clamping bars that can be clamped with clamping groove being rotatably connected in the pedestal tank, drive the drive of each clamping bar rotation
Moving frame, and the moving portion for rotating bogie in turn by clamping plate driving.
The clamping bar upper end forms the clamp extended on the outside of oriented clamping bar；The clamping groove lower part is to insert clamping bar
Enter the socket in clamping groove, and the fixation wall that can be offseted with clamp lower end.
The moving portion sliding slot of connection elastic slice tank and pedestal tank is formed in the pedestal；The moving portion edge is parallel to
The direction of clamping plate rotational plane is slidably connected in the moving portion sliding slot.
The moving portion forms longitudinally disposed link slot close to clamping plate side；The clamping plate two sides have been separately formed
The moving portion driving head being slidably connected with link slot.
The bogie include with moving portion rotation connection drive rod, and be molded over drive rod one end driving it is each
It is clamped the interlocking bar that bar rotates synchronously.
As prioritization scheme: being equipped with the automatic takeup mechanism for auto reeling charging cable in the charging cable incorporating section；
The charging cable is electrically connected by automatic takeup mechanism with bluetooth headset unit.
Compared with prior art, the beneficial effects of the present invention are: user is in use, remove box cover, bluetooth headset is taken out
Headset main body is worn on ear by unit, is used as conventional split type bluetooth headset.
During user movement, conventional split type bluetooth headset is easy to fall during exercise, and user pulls charging
Head extracts charging cable out, and makes two charging connectors are opposite to attract, so that two bluetooth headset units are become one by charging cable
It is whole, when a bluetooth headset unit falls off, since charging cable is connected with each other, so that bluetooth headset unit and charging cable are outstanding
Neck is hung over, bluetooth headset unit will not be made to lose easily.
Battery capacity inside conventional split type bluetooth headset is smaller, so that user needs frequently to charge for it, and
In charging process, it is not available bluetooth headset.
When user wears bluetooth headset unit, and needs to charge for bluetooth headset unit simultaneously, press section is pressed, so that
Storage box is separated with pedestal, and clamping part is separated with clamping plate tank at this time, and pedestal can be clamped on jobbie by user, facilitates use
Family is the charging of bluetooth headset unit；After removing pedestal, user extracts charging connector out, and with transmission of electricity connector grafting, in pedestal
Battery is the battery charging in bluetooth headset unit, and user can be bluetooth in the state without removing bluetooth headset unit
Headphone unit charging, extend bluetooth headset unit uses the time, while pedestal could be sandwiched on clothes, and user is facilitated to place bottom
Seat.
After user has used bluetooth headset unit, bluetooth headset unit is put into earphone cavity, at this time charging connector with
Transmission of electricity connector is mutually inserted, and battery is battery charging.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is decomposition texture schematic diagram of the invention.
Fig. 3, Fig. 4 are the schematic cross-sectional views of storage box of the present invention.
Fig. 5 is schematic cross-sectional view of the invention.
Fig. 6, Fig. 7 are the structural schematic diagrams of charging connector of the present invention and transmission of electricity connector.
Fig. 8 is the decomposition texture schematic diagram of pedestal of the present invention.
Fig. 9, Figure 10, Figure 11 are the schematic cross-sectional views of pedestal of the present invention.
Figure 12 is the structural schematic diagram of bogie of the present invention and clamping bar.
Figure 13 is the structural schematic diagram after two charging connectors of the present invention are connected with each other.
Figure 14 is the structural schematic diagram when present invention charges for bluetooth headset unit.
1, storage box；10, box cover；11, earphone cavity；12, clamping groove；13, connector slot；2, pedestal；21, pedestal holds
Slot；211, it is clamped bar shaft；22, clamping plate tank；221, clamping plate shaft；23, elastic slice tank；24, moving portion sliding slot；3, bluetooth ear
Machine unit；31, charging cable incorporating section；32, charging connector；321, permanent magnet；322, electrical slot is connect；4, battery；41, transmission of electricity connects
Head；411, iron core；412, connect plug；413, connector pedestal；5, moving portion；51, link slot；52, driving head；6, clamping plate；61,
Moving portion driving head；62, clamping plate rotation slot；63, upper protrusion；7, U-shaped elastic slice；8, bogie；81, drive rod；811, drive rod
Link slot；82, interlocking bar；9, it is clamped bar；91, clamp；92, it is clamped bar rotation slot.
Specific embodiment
Embodiment 1
According to Fig. 1 to Figure 14, a kind of bluetooth headset external member described in the present embodiment, includes storage box 1, and detachable
Two bluetooth headset units 3 being mounted in the storage box；It is equipped in the storage box for being filled for bluetooth headset unit
The battery 4 of electricity；The bluetooth headset unit includes headset main body；Promising earphone master is respectively set in each bluetooth headset unit
The battery of body power supply.
Bluetooth headset unit lower part is equipped with charging cable incorporating section 31；It is equipped in the charging cable incorporating section and battery
The charging cable for charging for battery of electrical connection；The charging cable can be extracted out out of charging cable incorporating section.
The charging thread end is connected with the charging connector 32 that can be electrically connected with the battery in storage box, and two institutes
The charging connector for stating bluetooth headset unit can be detachably connected.
The storage box upper end is removably connected with box cover 10.
The charging connector 32 is fixedly connected with permanent magnet 321 far from one end of charging cable；Two bluetooth headset lists
Polarity of the permanent magnet far from charging connector one end in member is opposite.
Two charging cables are extracted out, and the permanent magnet on two charging connectors is made to be in contact, since two permanent magnets are opposite
On the contrary, two charging connectors is made to attract each other, two bluetooth headset units are linked together the polarity of side by charging cable.
The storage box lower end is removably connected with pedestal 2；The battery 4 is mounted in the pedestal；The electric power storage
There are two the transmission of electricity connectors 41 that can be electrically connected with charging connector and then charge for battery by Chi Shangshe.
The battery includes lithium battery and corresponding booster circuit module, the lithium battery and booster circuit module
Input terminal electrical connection, the transmission of electricity connector are electrically connected with the output end of booster circuit module.
The transmission of electricity connector includes the connector pedestal 413 being fixedly connected in the battery, is fixedly connected on connector bottom
The iron core 411 that can be attracted each other with permanent magnet of seat upper end, and it is fixedly connected on the electric with battery of the iron core upper end
The connect plug 412 of connection.
The charging connector is formed close to permanent magnet one end to be socketed with the connect plug and what is be electrically connected connects electricity
Slot 322.
Described connect is respectively equipped with positive electricity polar ring and negative electricity polar ring in electrical slot；The connect plug is equipped with and positive electricity polar ring
Positive electrode slot corresponding with negative electricity polar ring and negative electrode slot.
Charging cable is extracted out, makes charging connector close to transmission of electricity connector, since iron core and permanent magnet attract each other, so that connecing electricity
Slot and connect plug can easily grafting, can't easily be detached from, while positive electricity polar ring is electrically connected with positive electrode slot, it is negative
Electrode retaining collar is electrically connected with negative electrode slot, and then the electric energy in battery is conveyed to battery by charging cable.
The earphone cavity 11 for accommodating bluetooth headset unit is formed in the storage box；Bottom forms in the earphone cavity
Have for the connector slot 13 in the transmission of electricity connector insertion earphone cavity.
When pedestal is mounted on storage box lower end, in transmission of electricity connector insertion earphone cavity, user puts bluetooth headset unit
After entering earphone cavity, transmission of electricity connector is electrically connected to each other with charging connector, is charged for battery.
The pedestal lower end forms clamping plate tank 22；Clamping plate 6 is rotatably connected in the clamping plate tank；On the clamping plate
End forms equally distributed raised 63, increases frictional force of the clamping plate in clamping.
It is located at clamping plate tank side on the pedestal and forms the elastic slice tank 23 being connected to clamping plate tank；The clamping plate holds
Position between slot two sidewalls with elastic slice tank face forms clamping plate shaft 221；Position of the clamping plate side wall close to middle part
Form the clamping plate rotation slot 62 with the rotation connection of clamping plate shaft；It is equipped between the elastic slice tank inner top and clamping plate upper end
The U-shaped elastic slice 7 that driving clamping plate and clamping plate tank inner top offset.
The storage box lower end position opposite with the two sidewalls for being parallel to clamping plate rotational plane forms multiple in inverted " L "
The clamping groove 12 of shape；Storage box and pedestal phase can be made by clamping plate driving by being separately installed in the pedestal positioned at clamping plate two sides
To fixed clamping mechanism.
The two sidewalls upper end that the pedestal is parallel to clamping plate rotational plane forms pedestal tank 21；The clamping mechanism packet
Multiple clamping bars 9 that can be clamped with clamping groove being rotatably connected in the pedestal tank are included, each clamping bar rotation is driven
Bogie 8, and by clamping plate driving so that make bogie rotate moving portion 5.
The clamping bar upper end forms the clamp 91 extended on the outside of oriented clamping bar；The clamping groove lower part is to make to be clamped bar
The socket being inserted into clamping groove, and the fixation wall that can be offseted with clamp lower end；The clamp upper end is arc-shaped.
Clamping bar rotation slot 92 is formed in the middle part of the clamping bar；The pedestal tank side wall forms and clamping bar rotation
The clamping bar shaft 211 of slot rotation connection.
The moving portion sliding slot 24 of connection elastic slice tank and pedestal tank is formed in the pedestal；The moving portion is along parallel
It is slidably connected in the moving portion sliding slot in the direction of clamping plate rotational plane.
The moving portion forms longitudinally disposed link slot 51 close to clamping plate side；The clamping plate two sides are separately formed
There is the moving portion driving head 61 being slidably connected with link slot.
The bogie include with moving portion rotation connection drive rod 81, and be molded over drive rod one end driving it is each
The interlocking bar 82 that a clamping bar rotates synchronously.
The moving portion forms driving head 52 far from clamping plate one end；It forms to rotate with driving head on the drive rod and connect
The drive rod link slot 811 connect.
The clamping bar lower part forms clamping bar rotary head；It is formed in the interlocking bar and clamping bar rotary head rotation
The linkage slot of connection.
The clamping plate includes the press section with U-shaped elastic slice face, and the clamping part that can be offseted with clamping plate tank.
Under original state, clamp offsets with fixation wall, and pedestal is connected and fixed with storage box.
When needing to remove pedestal, press section is pressed, U-shaped elastic slice is shunk, and press section is rotated into elastic slice tank, and then band
Dynamic moving portion is mobile to clamping part direction, and moving portion drives bogie mobile, so that clamping bar is along clamping bar shaft
Rotation, clamp are separated with fixation wall, and clamp and socket face, and picking up storage box at this time can separate pedestal with storage box.
When needing to reinstall pedestal into storage box lower end, since clamp upper end is arc-shaped, user by clamp and clamping groove just
It is right and relatively close, the sliding of clamp upper end edge fixation wall, and out of socket insertion clamping groove, final clamp and fixation wall are clamped,
Pedestal is relatively fixed with storage box.
The automatic takeup mechanism for auto reeling charging cable is equipped in the charging cable incorporating section；The charging cable passes through
Automatic takeup mechanism is electrically connected with bluetooth headset unit.
Automatic takeup mechanism can use Publication No.: patent protection required by the Chinese utility model of CN207854124U
Earphone cable automatic takeup mechanism, other wind spring take-up mechanisms can also be used, or stir the take-up mechanism of reel manually.
The base side wall is equipped with the charge port being electrically connected with battery, and user can be by charge port to charge the battery.
In use, removing box cover, headset main body is worn on ear, as routine user by taking-up bluetooth headset unit
Split type bluetooth headset use.
During user movement, conventional split type bluetooth headset is easy to fall during exercise, and user pulls charging
Head extracts charging cable out, and makes two charging connectors are opposite to attract, so that two bluetooth headset units are become one by charging cable
It is whole, when a bluetooth headset unit falls off, since charging cable is connected with each other, so that bluetooth headset unit and charging cable are outstanding
Neck is hung over, bluetooth headset unit will not be made to lose easily.
Battery capacity inside conventional split type bluetooth headset is smaller, so that user needs frequently to charge for it, and
In charging process, it is not available bluetooth headset.
When user wears bluetooth headset unit, and needs to charge for bluetooth headset unit simultaneously, press section is pressed, so that
Storage box is separated with pedestal, and clamping part is separated with clamping plate tank at this time, and pedestal can be clamped on jobbie by user, facilitates use
Family is the charging of bluetooth headset unit；After removing pedestal, user extracts charging connector out, and with transmission of electricity connector grafting, in pedestal
Battery is the battery charging in bluetooth headset unit, and user can be bluetooth in the state without removing bluetooth headset unit
Headphone unit charging, extend bluetooth headset unit uses the time, while pedestal could be sandwiched on clothes, and user is facilitated to place bottom
Seat.
After user has used bluetooth headset unit, bluetooth headset unit is put into earphone cavity, at this time charging connector with
Transmission of electricity connector is mutually inserted, and battery is battery charging.
Claims (5)
1. a kind of bluetooth headset external member, includes storage box, and two be removably mounted in the storage box bluetooth ear
Machine unit；Battery for charging for bluetooth headset unit is installed in the storage box；The bluetooth headset unit includes
Headset main body；The battery of promising headset main body power supply is respectively set in each bluetooth headset unit；It is characterized by:
Bluetooth headset unit lower part is equipped with charging cable incorporating section；It is equipped in the charging cable incorporating section and is electrically connected with battery
For for battery charging charging cable；The charging cable can be extracted out out of charging cable incorporating section；
The charging thread end is connected with the charging connector that can be electrically connected with the battery in storage box, and two bluetooths
The charging connector of headphone unit can be detachably connected.
2. a kind of bluetooth headset external member as described in claim 1, it is characterised in that: the charging connector far from charging cable one
End is fixedly connected with permanent magnet；Polarity of the permanent magnet far from charging connector one end on two bluetooth headset units is opposite.
3. a kind of bluetooth headset external member as claimed in claim 2, it is characterised in that: the storage box lower end is removably connected with
Pedestal；The battery is mounted in the pedestal；It can be electrically connected in turn with charging connector there are two being set on the battery
For the transmission of electricity connector of battery charging；
The earphone cavity for accommodating bluetooth headset unit is formed in the storage box；Bottom is formed for institute in the earphone cavity
State the connector slot in transmission of electricity connector insertion earphone cavity.
4. a kind of bluetooth headset external member as claimed in claim 3, it is characterised in that: the pedestal lower end forms clamping plate appearance
Slot；Clamping plate is rotatably connected in the clamping plate tank；
It is located at clamping plate tank side on the pedestal and forms the elastic slice tank being connected to clamping plate tank；Top in the elastic slice tank
The U-shaped elastic slice that driving clamping plate and clamping plate tank inner top offset is installed between portion and clamping plate upper end；
It is in inverted "L" shape that the storage box lower end position opposite with the two sidewalls for being parallel to clamping plate rotational plane, which forms multiple,
Clamping groove；Being separately installed in the pedestal positioned at clamping plate two sides can make storage box relatively fixed with pedestal by clamping plate driving
Clamping mechanism；
The two sidewalls upper end that the pedestal is parallel to clamping plate rotational plane forms pedestal tank；The clamping mechanism includes multiple
The clamping bar that can be clamped with clamping groove being rotatably connected in the pedestal tank drives the driving of each clamping bar rotation
Frame, and the moving portion for rotating bogie in turn by clamping plate driving；
The clamping bar upper end forms the clamp extended on the outside of oriented clamping bar；The clamping groove lower part is to make to be clamped bar insertion card
Socket in access slot, and the fixation wall that can be offseted with clamp lower end；
The moving portion sliding slot of connection elastic slice tank and pedestal tank is formed in the pedestal；The moving portion edge is parallel to clamping plate
The direction of rotational plane is slidably connected in the moving portion sliding slot；
The moving portion forms longitudinally disposed link slot close to clamping plate side；The clamping plate two sides have been separately formed and have connected
The moving portion driving head that access slot is slidably connected；
The bogie includes the drive rod with moving portion rotation connection, and is molded over each clamping of driving of drive rod one end
The interlocking bar that bar rotates synchronously.
5. a kind of bluetooth headset external member as described in claim 1, it is characterised in that: be equipped with and be used in the charging cable incorporating section
The automatic takeup mechanism of auto reeling charging cable；The charging cable is electrically connected by automatic takeup mechanism with bluetooth headset unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005400.4A CN109495808A (en) | 2019-01-03 | 2019-01-03 | A kind of bluetooth headset external member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005400.4A CN109495808A (en) | 2019-01-03 | 2019-01-03 | A kind of bluetooth headset external member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109495808A true CN109495808A (en) | 2019-03-19 |
Family
ID=65713961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910005400.4A Withdrawn CN109495808A (en) | 2019-01-03 | 2019-01-03 | A kind of bluetooth headset external member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109495808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418239A (en) * | 2019-09-11 | 2019-11-05 | 深圳市为宝创发科技有限公司 | Bluetooth headset and charging box for bluetooth headset |
-
2019
- 2019-01-03 CN CN201910005400.4A patent/CN109495808A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110418239A (en) * | 2019-09-11 | 2019-11-05 | 深圳市为宝创发科技有限公司 | Bluetooth headset and charging box for bluetooth headset |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190319 |