CN207499708U - A kind of rotary type security protection sliding window - Google Patents
A kind of rotary type security protection sliding window Download PDFInfo
- Publication number
- CN207499708U CN207499708U CN201721255787.1U CN201721255787U CN207499708U CN 207499708 U CN207499708 U CN 207499708U CN 201721255787 U CN201721255787 U CN 201721255787U CN 207499708 U CN207499708 U CN 207499708U
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- China
- Prior art keywords
- shaft
- guide pad
- motor
- window
- connecting rod
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- Expired - Fee Related
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Abstract
A kind of rotary type security protection sliding window, it is related to window technology field for building, including a frame, frame is both provided with gliding groove in both sides up and down, and window frame is equipped in the gliding groove, glass is equipped in the window frame, diaphragm seal is both provided at left and right sides of frame, through-hole in being provided with one in the middle part of gliding groove is provided with lower mounting groove on the downside of frame, control testing agency and sliding slot rotating mechanism is equipped in the lower mounting groove.The application realizes the automation of automatic window, and by means of the design of sensor, realize the detection of window state, effectively solve because of the security risk of adult's appearance not note that child opens a window using the design of sliding slot rotating mechanism and control testing agency.Sensor may further be enriched with warning device herein, if agreeing to open a window without adult, send out alarm sound.
Description
Technical field
The utility model is related to window technology field for building, specifically a kind of rotary type security protection sliding window.
Background technology
Window can have as the part in daily life, basic each room.Window has daylighting function, then window
Family also brings security risk while bringing convenient.
With the construction of skyscraper, high-rise window belt come danger it is increasing, if there is child in family, and window this
When open again, the accident of high-altitude building falling is also because the accidentally windowing of parent is related.And in low-rise building, and there is antitheft
Necessity.There has been no similar controlling window appearance at present.
Utility model content
The problem of for the high-altitude building falling danger in the prior art for forgetting to close window appearance and antitheft correlation, this reality
With a kind of rotary type security protection sliding window of novel offer, using mechanical mechanism and the self-locking property of motor, pass through automation control reality
The open and close of existing window is switch of the person in other places, also controllable window, while also solves caused by not closing window
The problem of rainwater is got in.
The technical solution adopted by the utility model to solve its technical problems is that：
A kind of rotary type security protection sliding window, including a frame, frame is both provided with gliding groove, the gliding groove in both sides up and down
Window frame is inside installed, glass is installed in the window frame, diaphragm seal is both provided at left and right sides of frame, is set in the middle part of gliding groove
Through-hole in having one is provided with lower mounting groove on the downside of frame, control testing agency and sliding slot rotation is equipped in the lower mounting groove
Mechanism.
Further, the sliding slot rotating mechanism includes the first fixed block, arcuate oscillating motion plate, middle part arc guide groove, the
One guide pad, the first rotating bar, first rotating shaft, the first motor, first connecting rod and the second shaft are provided with the on lower installation cell wall
One fixed block and the first motor, the first fixed block are rotatably connected to arcuate oscillating motion bar, and middle part is provided on the arcuate oscillating motion bar
Arc guide groove is sliding combined with the first guide pad in the middle part arc guide groove, and first guide pad is connected with first
Rotating bar is provided with first rotating shaft in first rotating bar, and first rotating shaft is connected with the output shaft of the first motor, arc pendulum
Movable plate is rotatablely connected with first connecting rod, and the second shaft is provided on first connecting rod, and the second shaft is mounted on the downside of window frame.
Further, the sliding slot rotating mechanism includes the second fixed block, second connecting rod, the second oscillating deck, the second guiding
Slot, the first circular rotary wheel, the first cross link, third shaft, the second motor, the 4th shaft, the second guide pad, articulated shaft, water
Flat guide rod and vertical connecting rod, lower install are provided with the second fixed block and the second motor on cell wall, the rotation connection of the second fixed block
There is a second connecting rod, second connecting rod is hinged with the second oscillating deck, is provided with the second guide groove in the middle part of second oscillating deck, and described the
The second guide pad is sliding combined in two guide grooves, the 4th shaft is provided on the second guide pad, the 4th shaft is mounted on first
On circular rotary wheel, the described first round shaft is provided with the first cross link, and third shaft is equipped in the first cross link, the
Three shafts are connected with the second motor, and the second oscillating deck is connected with articulated shaft, and the articulated shaft is mounted on horizontally-guided bar, described
Horizontally-guided bar on the downside of vertical connecting rod and window frame by being connected.
Further, the sliding slot rotating mechanism includes third oscillating deck, the 5th shaft, third guide pad, third guiding
Slot, the 4th guide pad, the 6th shaft, drop shot, with reference to bar, the 7th shaft, the second circular rotary wheel, third motor, eighth-turn axis
With the second cross link, lower install is provided with the 5th shaft and third motor on cell wall, third guiding is equipped in the 5th shaft
Block, the third guide pad are moved along the third guide groove in third oscillating rod, are also slidably matched in the third oscillating rod
There is the 4th guide pad, the 6th shaft is provided on the 4th guide pad, the 6th shaft is mounted on the second circular rotary wheel,
Described second round shaft is provided with the second cross link, and eighth-turn axis, eighth-turn axis connection are equipped in the second cross link
There is third motor, the third oscillating rod is connected with the 7th shaft, and the 7th shaft is mounted on drop shot, the drop shot
It is connected on the downside of bar and window frame by combining.
Further, the sliding slot rotating mechanism includes the 9th shaft, the 4th oscillating rod, upper guide groove, lower guide groove, the
Five guide pads, third connecting rod, the 4th motor, the 6th guide pad, bottom plate and leading screw, lower install are provided with lower fixation on cell wall
Plate and the 4th motor, bottom plate middle part are provided with leading screw, the 6th guide pad are sliding combined on the leading screw, the described 6th leads
It is slided in the lower guide groove of the 4th oscillating rod to block, guide groove, the upper guiding is additionally provided on the 4th oscillating rod
The 5th guide pad is sliding combined in slot, the 5th guide pad is hinged with third connecting rod, the third connecting rod and the 4th motor
Output shaft be connected, the 4th oscillating rod is connected with the 9th shaft, wherein the 9th shaft be mounted on window frame downside.
Further, the control testing agency includes control panel and sensor, and sensor is arranged on frame both sides, controls
Plate is electrically connected with sensor.
Further, the sensor is pressure sensor or displacement sensor.
Further, the control testing agency has further included electric cylinder, upper mounting plate and pin strip, electric cylinder and control panel
Electrical connection, the extension bar of electric cylinder are equipped with upper mounting plate, are provided with multiple pin strips on the upper mounting plate, are set on the downside of window frame
The groove with pin strip matched design is equipped with, the control panel is electrically connected with sliding slot rotating mechanism.
The beneficial effects of the utility model are：
The application utilizes sliding slot rotating mechanism and controls the design of testing agency, realizes the automation of automatic window,
And by means of the design of sensor, the detection of window state is realized, is effectively solved because adult is not note that child opens a window
The security risk of appearance.Sensor may further be enriched with warning device herein, if agreeing to open a window without adult, send out alarm
Sound.
Diaphragm seal 18 is both provided at left and right sides of frame, first for the sealing of window, second prevents window from touching two
Side sends out huge sound, and three, for protecting the sensor subsequently set, avoid window frame collision block sensor.
Through-hole in may be provided with one in the middle part of gliding groove facilitates sliding slot rotating mechanism to connect window frame, for sliding slot rotating mechanism
Window frame is driven to move left and right.
The design of sliding slot rotating mechanism, using the auto-lock function of motor, if without permission, then motor self-locking, window
It can not open, if there is thief, then window passive open, sensor detects that correlated condition changes, and so as to alarm, reminds
People.
Description of the drawings
Fig. 1 is the three dimensional structure diagram of the utility model；
Fig. 2 is the structure diagram of the first embodiment of the utility model；
Fig. 3 is the partial enlarged view at A in Fig. 2；
Fig. 4 is the structure diagram of the second embodiment of the utility model；
Fig. 5 is the partial enlarged view at B in Fig. 4；
Fig. 6 is the structure diagram of the 3rd embodiment of the utility model；
Fig. 7 is the partial enlarged view at C in Fig. 6；
Fig. 8 is the structure diagram of the 3rd embodiment of the utility model；
Fig. 9 is the partial enlarged view at D in Fig. 8；
In figure：1 frame, 11 times mounting grooves, 12 lower plates, 13 side plates, 2 window frames, 3 glass, 41 control panels, 42 sensors, 43
Electric cylinder, 44 upper mounting plates, 45 pin strips, 46 grooves, 5 sliding slot rotating mechanisms,
51 first fixed blocks, 52 arcuate oscillating motion plates, 53 middle part arc guide grooves, 54 first guide pads, 55 first rotations
Bar, 56 first rotating shafts, 57 first motors, 58 first connecting rods, 59 second shafts,
61 second fixed blocks, 62 second connecting rods, 63 second oscillating decks, 64 second guide grooves, 65 first circular rotary wheels, 66
One cross link, 67 third shafts, 68 second motors, 69 the 4th shafts, 610 second guide pads, 611 articulated shafts, 612 is horizontal
Guide rod, 613 vertical connecting rods,
71 third oscillating decks, 72 the 5th shafts, 73 third guide pads, 74 third guide grooves, 75 the 4th guide pads, 76 the 6th
Shaft, 77 drop shots, 78 combine bar, 79 the 7th shafts, 710 second circular rotary wheels, 711 third motors, 712 eighth-turn axis, 713
Second cross link,
81 the 9th shafts, 82 the 4th oscillating rods, guide groove on 83,84 times guide grooves, 85 the 5th guide pads, 86 thirds connect
Bar, 87 the 4th motors, 88 the 6th guide pads, 89 bottom plates, 810 leading screws.
Specific embodiment
As shown in Figure 1 to Figure 3, which includes a frame 1, and frame is fixed on the window hole of building
On mouth, and it is fixed using concrete etc..Frame is both provided with gliding groove in both sides up and down, and window frame is equipped in the gliding groove
2, glass 3 is installed in the window frame.Diaphragm seal 18 is both provided at left and right sides of frame, first for the sealing of window, two
It then prevents window from touching both sides and sends out huge sound, three, for protecting the sensor subsequently set, avoid window frame collision block from sensing
Device.
The gliding groove is one piece of lower plate 12 and the U-type groove of two pieces of combination formation of side plate 13, which is the prior art
It does not introduce excessively.
Through-hole in wherein may be provided with one in the middle part of gliding groove facilitates sliding slot rotating mechanism to connect window frame, is rotated for sliding slot
Mechanism drives window frame to move left and right.
Lower mounting groove 11 is provided on the downside of frame, control testing agency and sliding slot rotating machine are equipped in the lower mounting groove
Structure 5.
The control testing agency includes control panel 41 and sensor 42, and wherein sensor is arranged on frame both sides, is used for
Detect the state of window frame.The sensor can be pressure sensor or displacement sensor.Wherein, pressure sensor is used to detect it
Stressing conditions, if window frame squeeze pressure sensor, then pressure sensor transmits corresponding signal, illustrates that closing window at this time finishes,
If pressure sensor does not detect coherent signal, illustrate at this time without closing window.If the sensor is displacement sensor, that
By detecting the misalignment of window frame, if necessary to close window, then control panel can control associated motor to rotate, and realize window
The closing of family certain displacement or Close All.
Control panel is electrically connected with sensor.
Further, the control testing agency has further included electric cylinder 43, upper mounting plate 44 and pin strip 45, electric cylinder
It is electrically connected with control panel, the extension bar of electric cylinder is equipped with upper mounting plate, and multiple pin strips are provided on the upper mounting plate.With pin
Matched design, is provided with and the groove of pin strip matched design 46 on the downside of window frame.
The control panel is electrically connected with sliding slot rotating mechanism.
As shown in figure 3, the sliding slot rotating mechanism includes the first fixed block 51, arcuate oscillating motion plate 52, middle part arcuate guide
Slot 53, the first guide pad 54, the first rotating bar 55, first rotating shaft 56, the first motor 57,58 and second shaft 59 of first connecting rod,
The first fixed block 51 and the first motor 57 are provided on lower installation cell wall, wherein the first fixed block is rotatably connected to arcuate oscillating motion
Bar, middle part arc guide groove is provided on the arcuate oscillating motion bar, and being sliding combined with first in the middle part arc guide groove leads
To block, first guide pad is connected with the first rotating bar, is provided with first rotating shaft in first rotating bar, first rotating shaft with
The output shaft of first motor is connected, and the two can be used shaft coupling and link together.
Arcuate oscillating motion plate is rotatablely connected with first connecting rod, is provided with the second shaft on first connecting rod, the second shaft is mounted on
The downside of window frame.In this way by the rotation of the first motor, and then movement of first guide pad in the arc guide groove of middle part is driven,
And then realize that arcuate oscillating motion strip is moved window frame and moved left and right along gliding groove.
As shown in Figure 4 and Figure 5, the difference lies in sliding slots turn with first embodiment for the second embodiment of the utility model
Motivation structure is different.
The sliding slot rotating mechanism includes the second fixed block 61, second connecting rod 62, the second oscillating deck 63, the second guide groove
64th, the first circular rotary wheel 65, the first cross link 66, third shaft 67, the second motor 68, the 4th shaft 69, the second guide pad
610th, articulated shaft 611, horizontally-guided bar 612 and vertical connecting rod 613,
The second fixed block 61 and the second motor 68 are provided on lower installation cell wall, wherein the second fixed block is rotatably connected to
Two connecting rods, second connecting rod are hinged with the second oscillating deck, are provided with the second guide groove in the middle part of second oscillating deck, described second leads
The second guide pad is sliding combined with into slot, the 4th shaft is provided on the second guide pad, it is round that the 4th shaft is mounted on first
On runner, the described first round shaft is provided with the first cross link, and third shaft is equipped in the first cross link, and third turns
Axis connection has the second motor.
Second oscillating deck is connected with articulated shaft, and the articulated shaft is mounted on horizontally-guided bar, and the horizontally-guided bar leads to
It crosses on the downside of vertical connecting rod and window frame and is connected.
In this way by the rotation of the second motor, and then drive movement of second guide pad in the second guide groove, Jin Ershi
Existing second oscillating deck drives window frame to be moved left and right along gliding groove.
As shown in Figure 6 and Figure 7, the difference lies in sliding slots turn with first embodiment for the 3rd embodiment of the utility model
Motivation structure is different.
The sliding slot rotating mechanism includes third oscillating deck 71, the 5th shaft 72, third guide pad 73, third guide groove
74th, the 4th guide pad 75, the 6th shaft 76, drop shot 77, with reference to bar 78, the 7th shaft 79, the second circular rotary wheel 710, third
Motor 711,712 and second cross link 713 of eighth-turn axis,
The 5th shaft 72 and third motor 711 are provided on lower installation cell wall, is led wherein being equipped with third in the 5th shaft
To block, the third guide pad is moved along the third guide groove in third oscillating rod, is also slided and is matched in the third oscillating rod
Conjunction has the 4th guide pad, and the 6th shaft is provided on the 4th guide pad, and the 6th shaft is mounted on the second circular rotary wheel
On, the described second round shaft is provided with the second cross link, and eighth-turn axis is equipped in the second cross link, and eighth-turn axis connects
It is connected to third motor.
The third oscillating rod is connected with the 7th shaft, and the 7th shaft is mounted on drop shot, and the drop shot leads to
It crosses and is connected with reference on the downside of bar and window frame.
In this way by the rotation of third motor, and then drive movement of the 4th guide pad in third guide groove, Jin Ershi
Existing third oscillating deck drives window frame to be moved left and right along gliding groove.
As shown in Figure 8 and Figure 9, the difference lies in sliding slots turn with first embodiment for the fourth embodiment of the utility model
Motivation structure is different.
The sliding slot rotating mechanism includes the 9th shaft 81, the 4th oscillating rod 82, upper guide groove 83, lower guide groove 84, the
Five guide pads 85, third connecting rod 86, the 4th motor 87, the 6th guide pad 88, bottom plate 89 and leading screw 810.
89 and the 4th motor 87 of bottom plate is provided on lower installation cell wall, is wherein provided with leading screw in the middle part of bottom plate,
The 6th guide pad is sliding combined on the leading screw, the 6th guide pad slides in the lower guide groove of the 4th oscillating rod.Institute
It states and guide groove is additionally provided on the 4th oscillating rod, the 5th guide pad is sliding combined in the upper guide groove, the described 5th leads
Third connecting rod is hinged with to block, the third connecting rod is connected with the output shaft of the 4th motor.4th oscillating rod is connected with the 9th
Shaft, wherein the 9th shaft is mounted on the downside of window frame.
In this way by the rotation of the 4th motor, and then movement of the 5th guide pad in upper guide groove is driven, and then realize
4th oscillating deck drives window frame to be moved left and right along gliding groove.And the design of bottom plate and leading screw, then it can adjust the 6th guiding
The vertical position of block can adjust the left and right displacement of window frame.
It is the known technology of those skilled in the art in addition to the technical characteristic described in specification.
Claims (6)
1. a kind of rotary type security protection sliding window, including a frame, both sides are both provided with gliding groove to frame up and down, in the gliding groove
Window frame is installed, glass is installed in the window frame, it is characterized in that, diaphragm seal, gliding groove are both provided at left and right sides of frame
Through-hole during middle part is provided with one, is provided with lower mounting groove on the downside of frame, be equipped in the lower mounting groove control testing agency and
Sliding slot rotating mechanism,
The control testing agency includes control panel and sensor, and sensor is arranged on frame both sides, control panel and sensor electricity
Connection,
The control testing agency has further included electric cylinder, upper mounting plate and pin strip, and electric cylinder is electrically connected with control panel, electric cylinder
Extension bar be equipped with upper mounting plate, be provided with multiple pin strips on the upper mounting plate, be provided on the downside of window frame and pin strip
Groove with design, the control panel are electrically connected with sliding slot rotating mechanism.
2. a kind of rotary type security protection sliding window according to claim 1, it is characterized in that, the sliding slot rotating mechanism includes the
One fixed block, arcuate oscillating motion plate, middle part arc guide groove, the first guide pad, the first rotating bar, first rotating shaft, the first motor,
One connecting rod and the second shaft, lower install are provided with the first fixed block and the first motor on cell wall, and the first fixed block is rotatably connected to
Arcuate oscillating motion bar is provided with middle part arc guide groove on the arcuate oscillating motion bar, is slidably matched in the middle part arc guide groove
There is the first guide pad, first guide pad is connected with the first rotating bar, first rotating shaft is provided in first rotating bar, the
One shaft is connected with the output shaft of the first motor, and arcuate oscillating motion plate is rotatablely connected with first connecting rod, is provided on first connecting rod
Second shaft, the second shaft are mounted on the downside of window frame.
3. a kind of rotary type security protection sliding window according to claim 1, it is characterized in that, the sliding slot rotating mechanism includes the
Two fixed blocks, second connecting rod, the second oscillating deck, the second guide groove, the first circular rotary wheel, the first cross link, third shaft,
Two motors, the 4th shaft, the second guide pad, articulated shaft, horizontally-guided bar and vertical connecting rod, lower install are provided with second on cell wall
Fixed block and the second motor, the second fixed block are rotatably connected to second connecting rod, and second connecting rod is hinged with the second oscillating deck, and described
The second guide groove is provided in the middle part of two oscillating decks, the second guide pad, the second guide pad are sliding combined in second guide groove
On be provided with the 4th shaft, the 4th shaft is mounted on the first circular rotary wheel, and the described first round shaft is provided with the first intersection
Connecting rod is equipped with third shaft in the first cross link, and third shaft is connected with the second motor, and the second oscillating deck is connected with hinged
Axis, the articulated shaft are mounted on horizontally-guided bar, and the horizontally-guided bar on the downside of vertical connecting rod and window frame by being connected.
4. a kind of rotary type security protection sliding window according to claim 1, it is characterized in that, the sliding slot rotating mechanism includes the
Three oscillating decks, the 5th shaft, third guide pad, third guide groove, the 4th guide pad, the 6th shaft, drop shot, with reference to bar,
Seven shafts, the second circular rotary wheel, third motor, eighth-turn axis and the second cross link, lower install are provided with the 5th turn on cell wall
Axis and third motor are equipped with third guide pad in the 5th shaft, and the third guide pad is along the third in third oscillating rod
Guide groove moves, and is also sliding combined with the 4th guide pad in the third oscillating rod, the 6th is provided on the 4th guide pad
Shaft, the 6th shaft are mounted on the second circular rotary wheel, and the second round shaft is provided with the second cross link, and second
Eighth-turn axis is installed in cross link, eighth-turn axis connection has third motor, and the third oscillating rod is connected with the 7th shaft,
7th shaft is mounted on drop shot, and the drop shot is connected by combining on the downside of bar and window frame.
5. a kind of rotary type security protection sliding window according to claim 1, it is characterized in that, the sliding slot rotating mechanism includes the
Nine shafts, the 4th oscillating rod, upper guide groove, lower guide groove, the 5th guide pad, third connecting rod, the 4th motor, the 6th guide pad,
Bottom plate and leading screw, lower install are provided with bottom plate and the 4th motor, are provided with leading screw in the middle part of bottom plate, institute on cell wall
It states and the 6th guide pad is sliding combined on leading screw, the 6th guide pad slides in the lower guide groove of the 4th oscillating rod, described
Guide groove is additionally provided on 4th oscillating rod, the 5th guide pad is sliding combined in the upper guide groove, the described 5th is oriented to
Block is hinged with third connecting rod, and the third connecting rod is connected with the output shaft of the 4th motor, and the 4th oscillating rod is connected with the 9th turn
Axis, wherein the 9th shaft is mounted on the downside of window frame.
6. a kind of rotary type security protection sliding window according to claim 1, it is characterized in that, the sensor is pressure sensor
Or displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255787.1U CN207499708U (en) | 2017-09-28 | 2017-09-28 | A kind of rotary type security protection sliding window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721255787.1U CN207499708U (en) | 2017-09-28 | 2017-09-28 | A kind of rotary type security protection sliding window |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207499708U true CN207499708U (en) | 2018-06-15 |
Family
ID=62499068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721255787.1U Expired - Fee Related CN207499708U (en) | 2017-09-28 | 2017-09-28 | A kind of rotary type security protection sliding window |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207499708U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610972A (en) * | 2018-12-04 | 2019-04-12 | 四川耐德尔节能门窗有限公司 | A kind of window with wind and rain inductor |
| CN110137829A (en) * | 2019-06-04 | 2019-08-16 | 华翔翔能电气股份有限公司 | A kind of outdoor switchgear |
| CN110284776A (en) * | 2019-04-28 | 2019-09-27 | 深圳好博窗控技术有限公司 | A kind of boosting structure and push-and-pull handle lock |
| CN111789521A (en) * | 2019-04-01 | 2020-10-20 | 宋淳英 | Toilet seat user standing auxiliary device |
| CN114197996A (en) * | 2021-11-25 | 2022-03-18 | 台衡精密测控(昆山)股份有限公司 | Intelligent window safety system |
-
2017
- 2017-09-28 CN CN201721255787.1U patent/CN207499708U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610972A (en) * | 2018-12-04 | 2019-04-12 | 四川耐德尔节能门窗有限公司 | A kind of window with wind and rain inductor |
| CN111789521A (en) * | 2019-04-01 | 2020-10-20 | 宋淳英 | Toilet seat user standing auxiliary device |
| CN110284776A (en) * | 2019-04-28 | 2019-09-27 | 深圳好博窗控技术有限公司 | A kind of boosting structure and push-and-pull handle lock |
| CN110137829A (en) * | 2019-06-04 | 2019-08-16 | 华翔翔能电气股份有限公司 | A kind of outdoor switchgear |
| CN114197996A (en) * | 2021-11-25 | 2022-03-18 | 台衡精密测控(昆山)股份有限公司 | Intelligent window safety system |
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Legal Events
| 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: 20180615 Termination date: 20210928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |