CN204309459U - Dust-proof from wiping turnover blackboard - Google Patents
Dust-proof from wiping turnover blackboard Download PDFInfo
- Publication number
- CN204309459U CN204309459U CN201420724000.1U CN201420724000U CN204309459U CN 204309459 U CN204309459 U CN 204309459U CN 201420724000 U CN201420724000 U CN 201420724000U CN 204309459 U CN204309459 U CN 204309459U
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- blackboard
- eraser
- block
- turnover
- shell body
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Abstract
The utility model discloses a kind of turning auto-erasing blackboard device used of imparting knowledge to students, comprise shell body, be built in turnover blackboard device in shell body and auto-erasing device.The utility model is a kind of turning blackboard that can increase write area in limited space, reduce gap between plate, owing to arranging automatic blackboard cleaning structure after turning blackboard, its transmission principle is simple, can realize the efficient erasing to writing on the blackboard, closed erasing design is effective must avoid dust harzard.
Description
Technical field
The utility model relates to teaching aid, especially a kind of turnover blackboard used of imparting knowledge to students.
Background technology
The classroom instruction blackboard of prior art, needs artificial frequent erasing, waste time and energy, affect continuity of giving lessons, and the dust serious harm teachers and students' produced is healthy.The patent carrying out improving for the deficiency of traditional blackboard at present still has a lot of weak point, application number is the portable anti-skidding Folding blackboard of 201220404071.4, two blackboards are passed through gemel connection, its advantage is the increase in the usable floor area of blackboard, but hinge occupies part writing on the blackboard region when blackboard launches, impact is write with attractive in appearance; Application number is three Self-cleaning blackboards of 201320446261.7, traditional blackboard structure is improved, blackboard surface is spliced side by side by multiple Rhizoma Sparganii cylinder, each triangular prism proceeds posterolateral is equipped with a cylindrical blackboard eraser, its advantage is can automatic blackboard cleaning, but between Rhizoma Sparganii cylinder, gap is comparatively large, affects writing on the blackboard, complicated mechanism, and wiping effect is undesirable.
Utility model content
In order to solve prior art Problems existing, the utility model provides a kind of turning blackboard that can increase write area in limited space, reduce gap between plate, improve automatic blackboard cleaning structure on this basis simultaneously, its transmission principle is simple, realize the efficient erasing to writing on the blackboard, effectively avoid dust harzard.
The technical solution adopted in the utility model is: dust-proof from wiping turnover blackboard, comprise shell body, be built in the turnover blackboard device in shell body and auto-erasing device, it is characterized in that, described turnover blackboard device comprises, lower Dual-side blackboard block, middle Dual-side blackboard block and support, on, lower Dual-side blackboard block and middle Dual-side blackboard block piece together an overall blackboard block by sidewall Hinge mechanism is hinged, on, lower Dual-side blackboard block both sides are equipped with back shaft, back shaft end installs sliding bearing, sliding bearing is embedded in the arc guide barrel inside support, middle Dual-side blackboard block both sides are provided with fixed rotating shaft, side fixed rotating shaft runs through shell body side and connects handle reverse by rolling bearing, opposite side fixed rotating shaft is arranged on shell body by rolling bearing, described auto-erasing device is installed on after turnover blackboard device, comprises blackboard eraser, transmission device, control circuit, blackboard eraser motor, screw mandrel, trigger hook, trigger sheet, spring hinge, seesaw guide rail, needle roller, feed screw nut, lead screw motor, supporting seat, montant, move up and down guide rail, sliding block and line slideway, blackboard eraser is connected with blackboard eraser motor by transmission device, blackboard eraser, transmission device and blackboard eraser motor are fixed in eraser frame, eraser frame is provided with slide block, montant is provided with slide rail, trigger hook is buckled in the slide block in eraser frame in the slide rail of montant, and montant top and bottom are all fixedly connected with sliding block with feed screw nut by spring hinge, and feed screw nut is arranged on screw mandrel by threaded engagement, sliding block and line slideway are slidably connected, screw mandrel and line slideway are fixed by being arranged on the supporting seat at two ends in shell body, and screw mandrel is provided with lead screw motor, on, lower Dual-side blackboard block side or shell body and trigger hook same level position are provided with triggering sheet, the guide rail that seesaws is fixedly mounted on shell body one upper lateral part blackboard eraser movement locus initiating terminal, the guide rail that moves up and down is fixedly mounted on shell body one side lower part blackboard eraser movement locus terminal, upper and lower needle roller be fixedly mounted on the top of montant and end respectively and respectively with seesaw guide rail and move up and down guide rail lower end on same horizontal level.
As preferably, the upper catenating slider of fixed installation and lower catenating slider outside described arc guide barrel, inside arc guide barrel, upper arc place is provided with locating shaft, linkage from top to bottom slide block is by walking around the pulling force rope interlock tractive on locating shaft, realized the stability of folded turnover by this double-slider link gear, eliminate the harmful effect of gravity.
As preferably, described arc guide barrel upper end fixed installation banking stop, prevents blackboard from reversing, realizes blackboard upset capable of circulation.
As preferably, described sidewall Hinge mechanism is arranged on blackboard block lateral wall, realizes seamless link, sidewall Hinge mechanism fixedly mounts spring leaf when blackboard block launches between blackboard block, provides elastic force when crossing upset dead point.
As preferably, described handle reverse is driving stepper motor, and realizing blackboard can automatic turning.
As preferably, described transmission device comprises blackboard eraser connector, internal gear, centre wheel, planetary gear and rotating shaft, described blackboard eraser is that concentric inner circular blackboard eraser is socketed to form with peripheral annular blackboard eraser, inner circular blackboard eraser is fixedly connected with centre wheel, annular blackboard eraser is fixedly connected with internal gear by blackboard eraser connector, planetary gear is between internal gear and centre wheel and be meshed with internal gear inner surface and centre wheel outer surface, centre wheel is fixedly mounted in rotating shaft, rotating shaft is through eraser frame, shaft end is connected with blackboard eraser motor, realize inner circular blackboard eraser and peripheral annular blackboard eraser coaxial reverse, wipe effective.
As preferably, described montant top and bottom are connected with feed screw nut and sliding block respectively by the linear bearing of band spring shaft, substantially increase the reseting performance of blackboard eraser.
As preferably, described shell body is the detachable closure of surrounding, and shell body inner bottom part is provided with storage ash-pit, and on montant, fixed installation sweeps up dust brush, adopts and closes erasing design, efficiently solving the problem of the generation dust that erases the board.
As preferably, described screw mandrel slide block is provided with outstanding hole, and sliding block is provided with lower outstanding hole, steel wire rope one end is fixed in upper outstanding hole, the steel wire rope other end is fixed in lower outstanding hole, and steel wire rope is fastening by 4 fixed pulleys be fixed on shell body, further enhancing the stability of erasing apparatus.
As preferably, described control circuit comprises motor control module, writing on the blackboard and automatically captures and preserve module and signal output module.
The utility model adopts above structure, has following technique effect:
1. adopt folded turnover to change blackboard surface and blackboard surface is built in shell body, blackboard auto-erasing rear enclosed designs, and the dust efficiently solved when erasing the board produces;
2. sidewall Hinge mechanism is set at blackboard block side, can realizes between blackboard block seamless folding, not affect writing on the blackboard;
3. pass through design spring leaf, arc guide barrel, arc guide barrel arranges anti-reverse mechanism, double-slider link gear makes folded turnover more easily realize, and simplifies actuating unit, has saved upset space;
4. use gear train transmission device to realize coaxial reverse blackboard eraser, to simulate the action repeatedly erased the board, effectively improve erasing effect;
5. realize blackboard eraser by desired trajectory by structures such as trigger hook, motion guide rail, linear bearings to move, greatly reduce the area of blackboard eraser, saved manufacturing cost;
6. moved by fixed pulley traction sliding block, make the flexibility of auto-erasing device and stability higher;
7. utilize motor control module and trigger the in good time rotatings of control circui motor such as sheet, electromechanical, easy to operate;
8. design writing on the blackboard automatically to capture and preserve module and signal output module, utilize classroom existing equipment, realize " writing on the blackboard reproduction " function, make that classroom is convenient, hommization.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model; Fig. 2 is turnover blackboard apparatus structure schematic diagram; Fig. 3 is arc guide barrel double-slider linkage structure schematic diagram; Structural representation when Fig. 4 is automatic blackboard cleaning device work; Fig. 5 is the structural representation of coaxial reverse blackboard eraser; Structural representation when Fig. 6 is automatic blackboard cleaning device reset; The steel wire rope of Tu7Shi fixed pulley mechanism detours mode schematic diagram; Fig. 8 is control circuit modular structure schematic diagram.
In figure, 1 is folded turnover blackboard device, 2 is auto-erasing devices, 3 is shell bodies, 101 be on, lower Dual-side blackboard block, 102 is middle Dual-side blackboard blocks, 103 is sliding bearings, 104 is sidewall Hinge mechanisms, 105 is spring leafs, 106 is arc guide barrels, 107 is handle reverses, 108 is fixed rotating shafts, 109 is back shafts, 110 is banking stops, 111 is rolling bearings, 112 is upper catenating sliders, 113 is lower catenating sliders, 114 is locating shafts, 115 is pulling force ropes, 116 is supports, 200 is blackboard erasers, 201 is circular blackboard erasers, 202 is annular blackboard erasers, 203 is eraser frame, 204 is blackboard eraser connectors, 205 is internal gears, 206 is centre wheels, 207 is planetary gears, 208 is rotating shafts, 209 is screw mandrels, 210 is trigger hook, 211 is spring hinges, 212 is the guide rails that seesaw, 213 is needle rollers, 214 is feed screw nuts, 215 is spring shafts, 216 is lead screw motor, 217 is supporting seats, 218 is fixed pulleys, 219 is upper outstanding holes, 220 is slide rails, 221 is montants, 223 is trigger sheet, 224 is the guide rails that move up and down, 225 is linear bearings, 226 is lower outstanding holes, 227 is slide blocks, 228 is line slideways, 229 is the brushes that sweep up dust, 230 is storage ash-pits, 231 is transmission devices, 232 is control circuits, 233 is blackboard eraser motors, 234 is slide blocks, 301 is motor control modules, preservation module is captured in 302 writings on the blackboard automatically, 303 is signal output module.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model and operation principle are described in detail.
As shown in Figure 1, the utility model overall structure schematic diagram, be describe internal structure, a display section shell body 3, folded turnover blackboard device 1 front, for writing on the blackboard; Auto-erasing device 2, rear, stops side when blackboard eraser resets and do not work, auto-erasing writing on the blackboard after blackboard upset; Above-mentioned stream oriented device is placed in shell body 3, for location, supports and sealing, owing to adopting the design of auto-erasing rear enclosed, solves the problem of dust from flying when erasing the board.
As shown in Figure 2, sidewall Hinge mechanism 104 makes upper and lower Dual-side blackboard block 101 hinged with middle blackboard block 102 respectively, makes to realize seamless folding connection between blackboard block; Stationary spring 105 on sidewall hinge, provides the elastic force crossing upset dead point; Upper and lower Dual-side blackboard block 101 left and right side connects back shaft 109, and end cover has sliding bearing 103, and sliding bearing 103 is embedded in arc guide barrel 106 and also can rolls in both sides arc guide barrel 106; Arc guide barrel 106 top is provided with banking stop 110, realizes blackboard upset capable of circulation; Middle two blackboard block 102 left and right side is connected and fixed rotating shaft 108, and fixed rotating shaft 108 coordinates with the rolling bearing 111 at arc guide barrel 106 center, and fixed rotating shaft 108 can rotate in the rolling bearing 111 at arc guide barrel 106 center, supports blackboard and transmits power; Handle reverse 107 and left side fixed rotating shaft 108 are connected, and rotate clockwise 270 °, handle, then reverse 90 °, blackboard can be made to complete a folded turnover action; Repeat aforesaid operations, blackboard can be made to circulate and overturn.
As shown in Figure 3, as improvement, in order to improve rollover effect, the upper catenating slider 112 of fixed installation and lower catenating slider 113 outside described arc guide barrel 106, inside arc guide barrel 106, upper arc place is provided with locating shaft 114, linkage from top to bottom slide block to be linked tractive by the pulling force rope 115 walked around on locating shaft 114, the stability of folded turnover is realized by this double-slider link gear, eliminate the harmful effect of gravity, the design of arc guide barrel 106 shape need consider width, gravity, friction, capable of circulation, the factors such as upset dead point, the diverse location that blackboard is overturn has specific folding attitude.
As shown in Fig. 4, Fig. 5, Fig. 6, the slide block 234 at eraser frame 203 back side is embedded in slide rail 220, can move up and down along montant slide rail 220, and by trigger hook 210, eraser frame 203 is buckled in initial position, slide rail 220 is fixedly connected with montant 221, spring shaft 215 fixing on montant 221 coordinates with linear bearing 225, and linear bearing 225 is connected with the feed screw nut 214 on screw mandrel 209 and the sliding block 227 on line slideway 228 respectively, realizes the movable of montant 221; As shown in Figure 7, four fixed pulleys 218 be fixed on shell body 3 walked around by steel wire rope, be fixed on the upper outstanding hole 219 on feed screw nut 214 and sliding block 227, lower outstanding hole 226, further enhancing the stability of erasing system by holding screw; Screw mandrel 209 is fixed by the supporting seat 217 at two ends, and one end is driven by lead screw motor 216.As shown in Figure 4, when blackboard eraser 200 works, lead screw motor 216 makes screw mandrel 209 rotate, feed screw nut 214 horizontal movement drives blackboard eraser to move horizontally, the spring be enclosed within spring shaft 215 promotes montant 221 makes blackboard eraser be adjacent to blackboard surface, and blackboard eraser motor 233 drives blackboard eraser 200 to rotate erasing writing on the blackboard by transmission device 231; When blackboard eraser 200 moves to end, trigger hook 210 runs into triggering sheet 223 and is backed down, eraser frame 203 freely falls along slide rail 220 height of next blackboard eraser, motor control module 301 in control circuit 232 exports reverse signal, lead screw motor 216 drives screw mandrel 209 to reverse, blackboard eraser back moves, upper and lower needle roller 213 makes blackboard eraser reset in the rolling on guide rail 212 and the guide rail 224 that moves up and down that seesaws respectively, as shown in Figure 6, such movement locus makes two blackboard eraser back and forth movements once just the writing on the blackboard on whole blackboard surface can be covered erasing to reset mode; The blackboard back side and surrounding sealing, bottom is provided with storage ash-pit 230, and montant 221 lower end connects the brush 229 that sweeps up dust, the ash that will be able to fall in blackboard eraser reciprocating movement is swept to storage ash-pit 230 both sides, whole system works in the shell body 3 closed, and dust of can not kicking up, is conducive to teacher's physical and mental health.
In order to improve erasing effect, blackboard eraser 200 and transmission device 231 can improve further, transmission device can adopt star gear train coaxially to reversely rotate device, as shown in Figure 5, blackboard eraser 200 can make middle circular blackboard eraser 201 and the blackboard eraser of peripheral annular blackboard eraser 202 Concentric rotation, circular blackboard eraser 201 is fixedly connected with centre wheel 206, annular blackboard eraser 202 is fixedly connected with internal gear 205 by blackboard eraser connector 204, planetary gear 207 axle center is fixed, realize circular blackboard eraser 201 and annular blackboard eraser 202 coaxial reverse, centre wheel connection rotating shaft 208 in two blackboard erasers, rotating shaft 208 is through eraser frame 203, end is connected with blackboard eraser motor 233.Such device makes each point of blackboard eraser process on blackboard surface have repeatedly different frictional directions, thus the manual action erased the board of simulation people.Experimental result shows, it is better that this mode wipes effect.
In order to improve the stability of auto-erasing apparatus system, Fig. 7 is that in shell body 3, side steel wire rope detours mode schematic diagram, steel wire rope is drawn from upper outstanding hole 219, walk around three fixed pulleys 218, finally be fixed on lower outstanding hole 226, when the feed screw nut 214 on screw mandrel 209 moves to left, the sliding block 227 on line slideway 228 also will synchronously move to left, and opposite side steel wire rope therewith symmetry detours.
Fig. 8 is the comprising modules structural representation of control circuit 232, start and stop and the rotating of motor is controlled by motor control module 301, automatically captured by writing on the blackboard and preserve the camera that controls in classroom of module 302 and before Dual-side blackboard overturns, writing on the blackboard automatic camera is preserved at every turn, after classroom is terminated, transfer photo by signal output module 303 at any time and be projected on projection screen, make full use of the existing camera in classroom and computer, realize " writing on the blackboard reproduction " function, make that classroom is convenient, hommization.
The utility model can do equivalent change to the technical characteristic of above embodiment completely, but these corresponding changes all should belong within the protection domain of technical scheme described in the utility model.
Claims (10)
1. dust-proof from wiping turnover blackboard, comprise shell body (3), be built in the turnover blackboard device (1) in shell body and auto-erasing device (2), it is characterized in that, described turnover blackboard device (1) comprises, lower Dual-side blackboard block (101), middle Dual-side blackboard block (102) and support (116), on, lower Dual-side blackboard block (101) and middle Dual-side blackboard block (102) piece together an overall blackboard block by sidewall Hinge mechanism (104) is hinged, on, lower Dual-side blackboard block (101) both sides are equipped with back shaft (109), back shaft (109) end installs sliding bearing (103), sliding bearing (103) is embedded in the arc guide barrel (106) of support (116) inner side, middle Dual-side blackboard block (102) both sides are provided with fixed rotating shaft (108), side fixed rotating shaft (108) runs through shell body (3) side and connects handle reverse (107) by rolling bearing (111), opposite side fixed rotating shaft (108) is arranged on shell body (3) by rolling bearing (111), described auto-erasing device (2) is installed on after turnover blackboard device (1), comprise blackboard eraser (200), transmission device (231), control circuit (232), blackboard eraser motor (233), screw mandrel (209), trigger hook (210), trigger sheet (223), spring hinge (211), seesaw guide rail (212), needle roller (213), feed screw nut (214), lead screw motor (216), supporting seat (217), montant (221), move up and down guide rail (224), sliding block (227) and line slideway (228), blackboard eraser (200) is connected with blackboard eraser motor (233) by transmission device (231), blackboard eraser (200), transmission device (231) and blackboard eraser motor (233) are fixed in eraser frame (203), eraser frame (203) is provided with slide block (234), montant (221) is provided with slide rail (220), trigger hook (210) is buckled in the slide block (234) in eraser frame (203) in the slide rail (220) of montant (221), montant (221) top and bottom are all fixedly connected with sliding block (227) with feed screw nut (214) by spring hinge (211), feed screw nut (214) is arranged on screw mandrel (209) by threaded engagement, sliding block (227) and line slideway (228) are slidably connected, screw mandrel (209) and line slideway (228) are fixed by the supporting seat (217) being arranged on shell body (3) interior two ends, screw mandrel (209) is provided with lead screw motor (216), on, lower Dual-side blackboard block (101) side or shell body (3) are provided with trigger hook (210) same level position and trigger sheet (223), the guide rail (212) that seesaws is fixedly mounted on shell body (3) upper lateral part blackboard eraser (200) movement locus initiating terminal, the guide rail (224) that moves up and down is fixedly mounted on shell body (1) side lower part blackboard eraser (200) movement locus terminal, upper and lower needle roller (213) be fixedly mounted on the top of montant (221) and end respectively and respectively with the guide rail that seesaws (212) and the guide rail that moves up and down (224) lower end on same horizontal level.
2. dust-proof from wiping turnover blackboard as claimed in claim 1, it is characterized in that, the upper catenating slider (112) of described arc guide barrel (106) outside fixed installation and lower catenating slider (113), on arc guide barrel (106) inner side, arc place is provided with locating shaft (114), and linkage from top to bottom slide block is by walking around pulling force rope (115) the interlock tractive on locating shaft (114).
3. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described arc guide barrel (106) upper end fixed installation banking stop (110).
4. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described sidewall Hinge mechanism (104) is arranged on upper and lower Dual-side blackboard block (101) and middle Dual-side blackboard block (102) lateral wall, and sidewall Hinge mechanism (104) fixedly mounts spring leaf (105).
5. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described handle reverse (107) is driving stepper motor.
6. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described transmission device (231) comprises blackboard eraser connector (204), internal gear (205), centre wheel (206), planetary gear (207) and rotating shaft (208), described blackboard eraser (200) is socketed to form for concentric inner circular blackboard eraser (201) and peripheral annular blackboard eraser (202), inner circular blackboard eraser (201) is fixedly connected with centre wheel (206), annular blackboard eraser (202) is fixedly connected with internal gear (205) by blackboard eraser connector (204), planetary gear (207) to be positioned between internal gear (205) and centre wheel (206) and to be meshed with internal gear (205) inner surface and centre wheel (206) outer surface, centre wheel (206) is fixedly mounted in rotating shaft (208), rotating shaft (208) is through eraser frame (203), rotating shaft (208) end is connected with blackboard eraser motor (233).
7. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described montant (221) top and bottom are connected with feed screw nut (214) and sliding block (227) respectively by the linear bearing (225) of band spring shaft (215).
8. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described shell body (3) is the detachable closure of surrounding, shell body (3) inner bottom part is provided with storage ash-pit (230), and the upper fixed installation of montant (221) sweeps up dust brush (229).
9. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described screw mandrel slide block (214) is provided with outstanding hole (219), sliding block (227) is provided with lower outstanding hole (226), upper fixing steel wire rope one end, upper outstanding hole (219), the fixing steel wire rope other end in lower outstanding hole (226), steel wire rope is fastening by 4 fixed pulleys (218) be fixed on shell body (1).
10. dust-proof from wiping turnover blackboard as claimed in claim 1 or 2, it is characterized in that, described control circuit (232) comprises motor control module (301), writing on the blackboard automatically captures and preserve module (302) and signal output module (303).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724000.1U CN204309459U (en) | 2014-11-24 | 2014-11-24 | Dust-proof from wiping turnover blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420724000.1U CN204309459U (en) | 2014-11-24 | 2014-11-24 | Dust-proof from wiping turnover blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204309459U true CN204309459U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420724000.1U Expired - Fee Related CN204309459U (en) | 2014-11-24 | 2014-11-24 | Dust-proof from wiping turnover blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204309459U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985955A (en) * | 2015-06-17 | 2015-10-21 | 南京工业职业技术学院 | Intelligent blackboard |
| CN106313963A (en) * | 2016-09-23 | 2017-01-11 | 杭州富阳尚科科技有限公司 | Automatic cleaning spliced blackboard with double using faces |
| CN106626916A (en) * | 2017-01-24 | 2017-05-10 | 南京工业职业技术学院 | Remote-controlled rotary automatic erasing blackboard |
| CN107471859A (en) * | 2017-07-18 | 2017-12-15 | 安徽卓特信息技术有限公司 | A kind of more black-boards |
| CN107685573A (en) * | 2017-07-18 | 2018-02-13 | 安徽卓特信息技术有限公司 | A kind of dust-free blackboard |
| CN108443547A (en) * | 2018-03-21 | 2018-08-24 | 吉林省天龙机电设备有限公司 | A kind of fire resisting damper |
| CN108552105A (en) * | 2018-05-17 | 2018-09-21 | 江苏和合水环境有限公司 | A kind of Movable water environment automatic control greenhouse |
| CN110641203A (en) * | 2019-10-09 | 2020-01-03 | 高威震 | Notebook |
| CN112477476A (en) * | 2020-12-22 | 2021-03-12 | 西安京网华通信息科技有限公司 | Spliced intelligent blackboard capable of automatically erasing dust-free |
-
2014
- 2014-11-24 CN CN201420724000.1U patent/CN204309459U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985955A (en) * | 2015-06-17 | 2015-10-21 | 南京工业职业技术学院 | Intelligent blackboard |
| CN106313963A (en) * | 2016-09-23 | 2017-01-11 | 杭州富阳尚科科技有限公司 | Automatic cleaning spliced blackboard with double using faces |
| CN106626916A (en) * | 2017-01-24 | 2017-05-10 | 南京工业职业技术学院 | Remote-controlled rotary automatic erasing blackboard |
| CN107471859A (en) * | 2017-07-18 | 2017-12-15 | 安徽卓特信息技术有限公司 | A kind of more black-boards |
| CN107685573A (en) * | 2017-07-18 | 2018-02-13 | 安徽卓特信息技术有限公司 | A kind of dust-free blackboard |
| CN108443547A (en) * | 2018-03-21 | 2018-08-24 | 吉林省天龙机电设备有限公司 | A kind of fire resisting damper |
| CN108552105A (en) * | 2018-05-17 | 2018-09-21 | 江苏和合水环境有限公司 | A kind of Movable water environment automatic control greenhouse |
| CN110641203A (en) * | 2019-10-09 | 2020-01-03 | 高威震 | Notebook |
| CN110641203B (en) * | 2019-10-09 | 2020-11-27 | 绍兴东雀纺织品有限公司 | Notebook |
| CN112477476A (en) * | 2020-12-22 | 2021-03-12 | 西安京网华通信息科技有限公司 | Spliced intelligent blackboard capable of automatically erasing dust-free |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151124 |