CN208335648U - A kind of administration system bulletin device - Google Patents

A kind of administration system bulletin device Download PDF

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Publication number
CN208335648U
CN208335648U CN201820697928.3U CN201820697928U CN208335648U CN 208335648 U CN208335648 U CN 208335648U CN 201820697928 U CN201820697928 U CN 201820697928U CN 208335648 U CN208335648 U CN 208335648U
Authority
CN
China
Prior art keywords
liquid crystal
case
bulletin
crystal display
magnet board
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.)
Expired - Fee Related
Application number
CN201820697928.3U
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Chinese (zh)
Inventor
张敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haojing College of Shaanxi University of Science and Technology
Original Assignee
Haojing College of Shaanxi University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haojing College of Shaanxi University of Science and Technology filed Critical Haojing College of Shaanxi University of Science and Technology
Priority to CN201820697928.3U priority Critical patent/CN208335648U/en
Application granted granted Critical
Publication of CN208335648U publication Critical patent/CN208335648U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of administration systems to announce device, including pedestal, the supporting mechanism being set on the base and the bulletin case being arranged at the top of supporting mechanism, the front of bulletin case is installed with the first magnet board, announces and is respectively equipped with the first opening and the second opening on the left plate and right side plate of case;It announces and is equipped with the first telescoping mechanism, the liquid crystal display connecting with the first telescoping mechanism, the second telescoping mechanism and the second magnet board connecting with the second telescoping mechanism in case.The utility model can show electronic bulletin information or image by the way that liquid crystal display is arranged; the area of display notice information is increased by telescopic liquid crystal display and the second magnet board; and after without that liquid crystal display and the second magnet board can be retracted to the first magnet board when showing electronic bulletin information; it is not take up the space of office; simultaneously; when without using liquid crystal display, bulletin case can play a protective role to liquid crystal display.

Description

A kind of administration system bulletin device
Technical field
The utility model belongs to administrative office product technical field, and in particular to a kind of administration system bulletin device.
Background technique
Administration is a kind of management activity with state power to social affairs.All enterprises, thing can also be referred to The Administrative Affairs Management of industry unit works.Chain of command is a kind of organization system.The broadest definition of administration refers to The social activities of all social organizations, group to improvement, management and execution in relation to affairs.Also refer to national politics target simultaneously It executes, including legislation, administration, administration of justice etc..The definition of narrow sense refers to management of the state administrative organs to function, also known as For public administration.
Currently, Administration task complexity is various, there are many required bulletin facility, and announcement board is a kind of for showing The grillage of information, announcement board are generally used for writing the space of a whole page, paste the paper with transmitting information, these existing announcement boards are usual Be it is fixed, in order to show that a large amount of information needs to make the biggish announcement board of volume, occupy the indoor space of office, and public It is relatively more fixed to accuse column, not can be carried out lifting, inconvenience observation.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of administration system bulletin Device.The technical problems to be solved in the utility model is achieved through the following technical solutions: a kind of administration system bulletin device, Including pedestal, the supporting mechanism being set on the base and the bulletin case being arranged on supporting mechanism, the front of the bulletin case It is installed with the first magnet board, announces and is respectively equipped with the first opening and the second opening on the left plate and right side plate of case;Announce case It is inside equipped with the first telescoping mechanism, the liquid crystal display connecting with the first telescoping mechanism, the second telescoping mechanism and stretches with second Second magnet board of mechanism connection;
First telescoping mechanism includes that the small air pump in left side and cylinder, cylinder in the bulletin case is arranged in pass through electricity Magnet valve is connect with small air pump;The telescopic end of the piston rod of cylinder is connect with liquid crystal display, and the piston rod is horizontally disposed, with Realize that liquid crystal display passes through the flexible disengaging bulletin case of the first opening;
Second telescoping mechanism includes the rack gear and motor that right side in the bulletin case is arranged in, and rack gear setting is being announced It is on the backboard of case and horizontally disposed;Motor is installed in the left end of second magnet board;It is fixed with teeth on the output shaft of motor Wheel, wheel and rack engagement, motor-driven gear is to realize that the second magnet board passes through the flexible disengaging bulletin case of the second opening;
It further include the guide rail for being installed in right side in bulletin case, guide rail is located at rack gear two sides and parallel with rack gear, described The back side of second magnet board is connect by sliding block with guide rail, and the sliding block is set on guide rail and is slidably connected with guide rail.
Further, the supporting mechanism includes the support frame being installed on pedestal, is rotatably connected to level on support frame The worm screw of setting, a helix is respectively equipped on the both sides of worm screw, and every helix and a turbine cooperate, wear on each turbine Equipped with a screw rod;The screw rod is vertically arranged, and the lower end of screw rod is connect with the base rotation, and two screw rods pass through horizontally disposed Connecting plate connection, connecting plate is equipped with the threaded hole that connect with the screw flight;
The front side wall of the connecting plate is connect with the backboard of the bulletin case;One end of the worm screw is equipped with handle.
Further, be respectively equipped with sliding rail on the top plate and bottom plate of the bulletin case, the upper edge of the liquid crystal display and Lower edge is slidably connected with the sliding rail respectively;
The upper edge of second magnet board and lower edge are slidably connected with the sliding rail respectively.
Further, the handle is equipped with rubber sleeve.
Further, the both ends of the worm screw are rotatablely connected by first bearing and support frame as described above;The screw rod Lower end is connect by second bearing with the base rotation.
Further, the upper end of the screw rod is equipped with stop nut.
The utility model has the beneficial effects that 1, the utility model can show electronic bulletin information by the way that liquid crystal display is arranged Or image, the area of display notice information is increased by telescopic liquid crystal display, and without showing that electronic bulletin is believed After liquid crystal display being retracted to the first magnet board when breath, it is not take up the space of office, meanwhile, do not use liquid crystal display When screen, bulletin case can play a protective role to liquid crystal display.
2, the utility model further increases by the way that telescopic second magnet board is arranged and shows notice information Area is not take up additional office space when not in use, and required use is adjusted according to the information content for showing notice information Displaying area.
3, the height by the adjustable bulletin case of rotary worm of the utility model, convenient for being suitble to the administrative work of different heights Make personnel paste information or writing on magnet board, the personnel for being also convenient for checking watch.
The utility model is described in further details below with reference to accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is administration system bulletin apparatus structure schematic diagram.
Fig. 2 is positive structure schematic inside the bulletin case of administration system bulletin device.
Fig. 3 is the bulletin case internal rear structural schematic diagram of administration system bulletin device.
Fig. 4 is the supporting mechanism structural schematic diagram of administration system bulletin device.
Fig. 5 is administration system bulletin device rearview structural representation.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the utility model is further described, below in conjunction with attached drawing And embodiment, to specific embodiment of the present utility model, structure feature and its effect, detailed description are as follows.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For the limitation to the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result, It can explicitly or implicitly include one or more of the features.In the description of the invention, unless otherwise indicated, The meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable Connection is unloaded, or is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through Concrete condition understands concrete meaning of the above-mentioned term in the invention.
As shown in Figure 1, the present embodiment provides a kind of administration systems to announce device, including pedestal 1, setting in pedestal 1 On supporting mechanism and the bulletin case 2 that is arranged on supporting mechanism, bulletin case 2 be cabinet, the front of bulletin case 2 is installed with the One magnet board 3 is announced and is respectively equipped with the first opening and the second opening on the left plate and right side plate of case 2;It is equipped in bulletin case 2 First telescoping mechanism, the liquid crystal display 4 being connect with the first telescoping mechanism, the second telescoping mechanism and with the second telescoping mechanism connect The second magnet board 5 connect;First telescoping mechanism drives 4 stretching motion of liquid crystal display, and liquid crystal display 4 can pass through first Opening is stretched out out of bulletin case 2 to outside bulletin case 2, and the second telescoping mechanism drives 5 stretching motion of the second magnet board, and second is magnetic Blackboard 5 can be stretched out out of bulletin case 2 to outside bulletin case 2 by the second opening.First telescoping mechanism and liquid crystal display 4 are located at The left side in case 2 is announced, the second telescoping mechanism and the second magnet board 5 are located at the right side in bulletin case 2, in use, needing to use It when second magnet board 5 shows notice information, is stretched out by second the second magnet board of telescoping mechanism 5, carries out pasting bulletin letter Breath or written information, when without using when, the second magnet board 5 is withdrawn by the second telescoping mechanism.In the prior art, It such as needs using greater area of magnet board, usually increases the area of magnet board, if notice information content is less, no When needing the magnet board using large area, not used part just occupies biggish placing space, causes space waste;This Embodiment can further increase the area for showing notice information by telescopic second magnet board 5 of setting as needed, It is not take up additional office space when not in use, second used needed for being adjusted according to the information content of displaying notice information The displaying area of magnet board 5.When showing electronic information using liquid crystal display 4, operation liquid crystal display 4 stretches out, and can lead to It crosses liquid crystal display 4 and connect the information for carrying out display electronic edition with computer, the bulletin with liquid crystal display fills in the prior art Set, it is magnet board that usual half, which is 4 half of liquid crystal display, the two be it is fixed, in the case where announcement board size is fixed, Reduce the area of magnet board significantly, is not able to satisfy and uses needs.The present embodiment is by being arranged telescopic liquid crystal Display screen 4 increases the area of display notice information, and without that can withdraw liquid crystal display 4 when showing electronic bulletin information To the first magnet board 3, it is not take up the exceptional space of office, meanwhile, when not using liquid crystal display 4, bulletin case 2 can be right Liquid crystal display 4 plays a protective role.
As shown in Figures 2 and 3, first telescoping mechanism of the present embodiment includes the small-sized gas that left side in bulletin case 2 is arranged in Pump 6 and cylinder 7, small air pump 6 and cylinder 7 can be fixed on the backboard of bulletin case 2, and cylinder 7 passes through solenoid valve and small air pump 6 Connection, the piston motion that small air pump 6 can be inflated and be evacuated to cylinder 7 to realize cylinder.;The piston rod 8 of cylinder 7 stretches End is connect with liquid crystal display 4, and piston rod 8 is horizontally disposed, to realize that liquid crystal display 4 passes through the flexible disengaging bulletin of the first opening Case 2.It is fixed in the middle part of the telescopic end (left end of piston rod 8) of the piston rod 8 of the cylinder 7 of the present embodiment and 4 back side of liquid crystal display Connection, 8 stretching motion of piston rod driving liquid crystal display 4 extend out to 2 left side of bulletin case by the first opening out of bulletin case 2, Or it is retracted on the left of bulletin case 2 in bulletin case 2.Small air pump 6 is opened when use, driving cylinder 7 works, and piston rod 8 can be done Stretching motion drives liquid crystal display 4 to move left and right.
Second telescoping mechanism of the present embodiment includes the rack gear 9 and motor 10 that right side in bulletin case 2 is arranged in, 9 water of rack gear Flat setting and the flank of tooth towards bulletin case 2 front panel;Motor 10 is installed in the left end of the second magnet board 5;Motor 10 Gear 11 is installed on output shaft, gear 11 is engaged with rack gear 9, and motor 10 drives gear 11 to realize that the second magnet board 5 is logical Cross the flexible disengaging bulletin case 2 of the second opening.The output shaft of motor 10 is vertically arranged, further includes being installed in right side in bulletin case 2 Guide rail 12, guide rail 12 are located at 9 two sides of rack gear and, backboard that the both ends of guide rail 12 pass through fixing piece and bulletin case 2 parallel with rack gear 9 It is fixedly connected.The back side of second magnet board 5 is connect by sliding block 13 with guide rail 12, sliding block 13 be set on guide rail 12 and with lead Rail 12 is slidably connected, and the second magnet board 5 is fixedly connected with sliding block 13, and guide rail 12 and sliding block 13 play the second magnet board 5 The effect of sliding is supported, while there is guiding role to the movement of the second magnet board 5, the second magnet board 5 of raising moves When reliability.When needing using the second magnet board 5,10 task driven gear 11 of motor rotation, gear 11 is moved up in rack gear 9 It is dynamic, drive motor 10 and the second magnet board 5 to move left and right, it is right that the second magnet board 5 extend out to bulletin case 2 out of bulletin case 2 Side, or be retracted in bulletin case 2 on the right side of bulletin case 2.
Further, the sliding rail for being respectively equipped on the top plate and bottom plate of case 2 and extending along bulletin 2 top plate of case and bottom plate is announced 20, the upper edge of liquid crystal display 4 and lower edge are slidably connected with sliding rail 20 respectively;The upper edge of second magnet board 5 and lower edge difference It is slidably connected with sliding rail 20.The structure of sliding rail 20 can be sliding slot shape, the upper edge of liquid crystal display 4 and the second magnet board 5 and Lower edge is embedded in sliding slot, and guide wheel, guide wheel and cunning can be also equipped on the upper edge or lower edge of liquid crystal display 4 and the second magnet board 5 Slot is slidably connected, specifically, such as lower edge has guide wheel, the wheel shaft of guide wheel is vertically arranged, and guide wheel is on the cell wall of sliding slot Sliding.Frictional force when the present embodiment reduces liquid crystal display 4 and mobile the second magnet board 5 by setting sliding rail 20, simultaneously Play the role of fixed limit to liquid crystal display 4 and the second magnet board 5.
First telescoping mechanism of the present embodiment and the second telescoping mechanism structure are simple, high reliablity.
Embodiment 2:
As shown in Figure 4 and Figure 5, place unlike the embodiments above is that supporting mechanism includes the branch being installed on pedestal 1 Support 14, horizontally disposed worm screw 15 is rotatably connected on support frame 14, and the both ends of worm screw 15 pass through first bearing and support Frame 14 is rotatablely connected;A helix is respectively equipped on the both sides of worm screw 15, every helix and a turbine 16 cooperate, each whirlpool It is equipped with a screw rod 17 on wheel 16, turbine 16 is fixedly connected with screw rod 17;Screw rod 17 is vertically arranged, and the lower end of screw rod 17 passes through the Two bearings and pedestal 1 are rotatablely connected.Two screw rods 17 are connected by horizontally disposed connecting plate 18, and connecting plate 18 is equipped with and spiral shell The threaded hole that bar 17 is threadedly coupled, screw rod 17 are threaded through in threaded hole.The front side wall of connecting plate 18 and the back at bulletin 2 back side of case Plate connection.One end of worm screw 15 is equipped with handle 19, and handle 19 is equipped with rubber sleeve.Swinging handle 19, driving worm screw 15 rotate, snail The rotation of bar 15 drives two turbines 16 to rotate, and then acts on two screw rods 17, and screw rod 17 rotates, and drives and screw rod 17 The connecting plate 18 of threaded connection rises or falls.Turbine and worm is driven available very big transmission ratio, compares crossed helical gears Mechanism is compact.It is contacted between two-wheeled mesh tooth face for line, bearing capacity is higher than crossed helical gears mechanism significantly.Worm screw 15 is driven Worm drive are equivalent to, are driven for multi-tooth meshing, therefore stable drive, noise very little, there is self-locking performance.One worm screw 15 drives simultaneously Two turbines 16 are moved, two 16 rotation directions of turbine are consistent, make 18 stress balance of connecting plate, can be realized steady lifting.
The working principle or the course of work of the utility model are as follows:
It, can the driving worm screw 15 of swinging handle 19 when Administration personnel need to announce device using administration system Rotation, the rotation of worm screw 15 drive turbine 16 to rotate, and screw rod 17 rotates, and drives on the connecting plate 18 being threadedly coupled with screw rod 17 It rises or declines, so that bulletin case 2 is adjusted to suitable height, bulletin then can be pasted or write on the first magnet board 3 Information;When needing using the second magnet board 5, motor 10 can be started by operating the switch connecting with motor 10, switch can Operation motor 10 rotates forward reversion and stops, and after starting motor 10, motor 10 is started to work, and driving gear 11 rotates, and gear 11 exists It is moved on rack gear 9, the second magnet board 5 is driven to be open by second to stretching out on the right side of bulletin case 2 out of bulletin case 2, meanwhile, it is sliding Block 13 slides on guide rail 12, and the second magnet board 5 reaches Operation switch after suitable position, closes motor 10, and second is magnetic 5 stop motion of blackboard can paste notice information or writing on the second magnet board 5 at this time.When magnetic black without using second When plate 5, operable switch inverts motor 10, so that the second magnet board 5 be made to withdraw in bulletin case 2.
When needing to show electronic information using liquid crystal display 4, small air pump 6 is opened by another switch, drives gas Cylinder 7 works, and piston rod 8 stretches out, and piston rod 8 stretches out driving liquid crystal display 4 and extend out to public affairs out of bulletin case 2 by the first opening 2 left side of case is accused, when liquid crystal display 4 extend out to required position, Operation switch, small air pump 6 stops working, and then passes through liquid crystal Display screen 4 is connect with computer to carry out operation and shows, when without using liquid crystal display 4, Operation switch, piston rod 8 is shunk, Liquid crystal display 4 is retracted in bulletin case 2 on the left of bulletin case 2.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the protection scope of the utility model.

Claims (8)

1. a kind of administration system announces device, including pedestal (1), the supporting mechanism being arranged on pedestal (1) and setting Bulletin case (2) on supporting mechanism, it is characterised in that: the front of bulletin case (2) is installed with the first magnet board (3), It announces and is respectively equipped with the first opening and the second opening on the left plate and right side plate of case (2);It announces flexible equipped with first in case (2) Mechanism, the liquid crystal display (4) being connect with the first telescoping mechanism, the second telescoping mechanism and connect with the second telescoping mechanism Two magnet boards (5);
First telescoping mechanism includes the small air pump (6) and cylinder (7) in setting left side in bulletin case (2), cylinder (7) it is connect by solenoid valve with small air pump (6);The telescopic end of the piston rod (8) of cylinder (7) is connect with liquid crystal display (4), The piston rod (8) is horizontally disposed, to realize that liquid crystal display (4) pass through flexible disengaging bulletin case (2) of the first opening;
Second telescoping mechanism includes the rack gear (9) and motor (10) on setting right side in bulletin case (2), rack gear (9) It is arranged on the backboard of bulletin case (2) and horizontally disposed;Motor (10) is installed in the left end of second magnet board (5);Electricity It is installed on the output shaft of machine (10) gear (11), gear (11) is engaged with rack gear (9), and motor (10) drives gear (11) with reality Existing second magnet board (5) pass through flexible disengaging bulletin case (2) of the second opening;
It further include the guide rail (12) for being installed in right side in bulletin case (2), guide rail (12) is located at the rack gear (9) two sides and and rack gear (9) in parallel, the back side of second magnet board (5) is connect by sliding block (13) with guide rail (12), and the sliding block (13) is arranged It is slidably connected on guide rail (12) and with guide rail (12).
2. a kind of administration system according to claim 1 announces device, it is characterised in that: the supporting mechanism includes The support frame (14) being installed on pedestal (1) is rotatably connected to horizontally disposed worm screw (15) on support frame (14), worm screw (15) Both sides on be respectively equipped with a helix, every helix and a turbine (16) cooperate, and are equipped with one on each turbine (16) Screw rod (17);The screw rod (17) is vertically arranged, and the lower end and the pedestal (1) of screw rod (17) are rotatablely connected, two screw rods (17) it is connected by horizontally disposed connecting plate (18), connecting plate (18) is equipped with the screw thread being threadedly coupled with the screw rod (17) Hole;
The front side wall of the connecting plate (18) is connect with the backboard of bulletin case (2);One end of the worm screw (15) is equipped with hand Handle (19).
3. a kind of administration system according to claim 1 announces device, it is characterised in that: bulletin case (2) Be respectively equipped on top plate and bottom plate sliding rail (20), the upper edge of the liquid crystal display (4) and lower edge respectively with the sliding rail (20) It is slidably connected;
The upper edge of second magnet board (5) and lower edge are slidably connected with the sliding rail (20) respectively.
4. a kind of administration system according to claim 2 announces device, it is characterised in that: bulletin case (2) Be respectively equipped on top plate and bottom plate sliding rail (20), the upper edge of the liquid crystal display (4) and lower edge respectively with the sliding rail (20) It is slidably connected;
The upper edge of second magnet board (5) and lower edge are slidably connected with the sliding rail (20) respectively.
5. a kind of administration system according to claim 4 announces device, it is characterised in that: set on the handle (19) Rubber sleeve.
6. a kind of administration system according to claim 2 or 5 announces device, it is characterised in that: the worm screw (15) Both ends be rotatablely connected by first bearing and support frame as described above (14);The lower end of the screw rod (17) by second bearing with Pedestal (1) rotation connection.
7. a kind of administration system according to claim 2 announces device, it is characterised in that: the screw rod (17) it is upper End is equipped with stop nut (21).
8. a kind of administration system according to claim 6 announces device, it is characterised in that: the screw rod (17) it is upper End is equipped with stop nut (21).
CN201820697928.3U 2018-05-11 2018-05-11 A kind of administration system bulletin device Expired - Fee Related CN208335648U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820697928.3U CN208335648U (en) 2018-05-11 2018-05-11 A kind of administration system bulletin device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820697928.3U CN208335648U (en) 2018-05-11 2018-05-11 A kind of administration system bulletin device

Publications (1)

Publication Number Publication Date
CN208335648U true CN208335648U (en) 2019-01-04

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Application Number Title Priority Date Filing Date
CN201820697928.3U Expired - Fee Related CN208335648U (en) 2018-05-11 2018-05-11 A kind of administration system bulletin device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935136A (en) * 2019-01-24 2019-06-25 吉林工程技术师范学院 A kind of data displaying device that ideology and politics teaching is applicable
CN111081171A (en) * 2019-12-10 2020-04-28 陕西铭泊停车服务有限公司 Parking area bill-board puts in device
CN111640365A (en) * 2020-06-15 2020-09-08 苏州缔丞文化艺术有限公司 Sign guide device
CN112914229A (en) * 2021-02-04 2021-06-08 深圳华文网教育科技有限公司 Intelligent platform with fingerprint identification function
CN112959843A (en) * 2021-02-07 2021-06-15 深圳华文网教育科技有限公司 Tensile formula teaching board of intelligence combination

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109935136A (en) * 2019-01-24 2019-06-25 吉林工程技术师范学院 A kind of data displaying device that ideology and politics teaching is applicable
CN111081171A (en) * 2019-12-10 2020-04-28 陕西铭泊停车服务有限公司 Parking area bill-board puts in device
CN111640365A (en) * 2020-06-15 2020-09-08 苏州缔丞文化艺术有限公司 Sign guide device
CN112914229A (en) * 2021-02-04 2021-06-08 深圳华文网教育科技有限公司 Intelligent platform with fingerprint identification function
CN112914229B (en) * 2021-02-04 2022-02-18 深圳华文网教育科技有限公司 Intelligent platform with fingerprint identification function
CN112959843A (en) * 2021-02-07 2021-06-15 深圳华文网教育科技有限公司 Tensile formula teaching board of intelligence combination

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190104

Termination date: 20190511

CF01 Termination of patent right due to non-payment of annual fee