CN208469414U - Writing whiteboard assists erasing apparatus - Google Patents
Writing whiteboard assists erasing apparatus Download PDFInfo
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- CN208469414U CN208469414U CN201820683699.XU CN201820683699U CN208469414U CN 208469414 U CN208469414 U CN 208469414U CN 201820683699 U CN201820683699 U CN 201820683699U CN 208469414 U CN208469414 U CN 208469414U
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Abstract
The utility model provides a kind of writing whiteboard auxiliary erasing apparatus, belongs to blank cleaning plant field.Including two root posts, column is equipped with mobile device, is connected with cleaning device in mobile device；Mobile device is set there are two sliding block, and two sliding blocks are separately mounted in two root posts, and two sliding blocks pass through two connecting rod connections, guide sleeve there are two being set in every connecting rod, guide post is equipped in guide sleeve, guide post passes through guide sleeve one end and is connected to cleaning device, and the other end is equipped with plug；Spring is equipped between guide sleeve and cleaning device；Power device is equipped in sliding block, power device band movable slider is moved up and down along column；Automatically blank writing can be wiped, wiping effect is good, will not consume the physical strength of teaching personnel.
Description
Technical field
The utility model provides a kind of writing whiteboard auxiliary erasing apparatus, belongs to blank cleaning plant field.
Background technique
In teaching and office realm, blank has been widely applied, and has the situation for replacing blackboard completely, and blank first uses
Marking pen is write, and avoiding to write using chalk makes to be stained with powder on teaching personnel's finger, while in cleaning, effectively keeping away
Dust from flying is exempted from.But often write area is smaller for blank on the market now, so will soon be write completely when writing,
Then staff can be made frequently to clear up writing, is then write again, increase the physical demands of teaching personnel in this way, together
When, it needs to expend longer time to clear up blank in lecture time, reduces efficiency of giving lessons, while word within the limited time
After mark has been done, blackboard eraser is difficult to use directly by blank wiped clean.
Utility model content
The utility model mesh is to provide a kind of writing whiteboard auxiliary erasing apparatus, can wipe automatically blank writing
It wipes, wiping effect is good, will not consume the physical strength of teaching personnel.
Writing whiteboard described in the utility model assists erasing apparatus, including two root posts, and column is equipped with mobile device,
Cleaning device is connected in mobile device；
Mobile device is set there are two sliding block, and two sliding blocks are separately mounted in two root posts, and two sliding blocks pass through two companies
Extension bar connects, and is set in every connecting rod there are two guide sleeve, and guide sleeve is interior to be equipped with guide post, and guide post is connected to across guide sleeve one end and cleans dress
It sets, the other end is equipped with plug；Spring is equipped between guide sleeve and cleaning device；Power device is equipped in sliding block, power device drives
Sliding block is moved up and down along column；
Cleaning device includes top plate and bottom plate and connecting plate A, connecting plate B and the connecting plate C for connecting top plate and bottom plate, is connected
Fishplate bar C is connected to again between connecting plate A and connecting plate B；Power roller and driven voller are equipped between top plate and bottom plate, cleaning tape bypasses
Power roller and driven voller, the two is linked；The shaft of power roller is equipped with driven gear, and plate top surface is equipped with driving motor A, drives
The shaft of dynamic motor A is equipped with driving gear A, and starting motor A drives power roller rotation by driven gear；Drive gear A with
Driven gear passes through chain drive.
Top board undersurface is connected with three squeezing rods, and cleaning tape passes through from the gap between three squeezing rods and connecting plate B；
Cleaning device is equipped with cleaning solution flusher；
Top plate top surface and bottom plate bottom surface are respectively equipped with two connecting plate D, are placed through the two of the guide sleeve of the connecting rod of top
Root guide post is connected respectively to two connecting plate D of top plate top surface, is placed through two guide posts point of the guide sleeve of the connecting rod of lower section
It is not connected to two connecting plate D of bottom plate bottom surface, spring pocket is on the outside of guide post, and between connecting plate D and guide sleeve.
The writing whiteboard assists erasing apparatus, and two root posts are located at the bracket two sides of blank, and by connecting plate D and
The bracket of blank is attached, it is made to carry out position restriction between blank.Mobile device drives cleaning device to limit along column
Direction it is mobile, i.e., vertical moves up and down.During mobile device drives cleaning device to move down, cleaning device is to blank
Plate face cleared up, after the completion of cleaning, mobile device drive again cleaning device uplink playback.It is realized with this to the clear of blank
Reason, in the process of cleaning, cleaning solution flusher sprays cleaning solution, that is, alcohol constantly on cleaning tape, and then cleaning tape is in power
Blank is cleared up under the drive of roller, can clear up blank is very clean.After having cleared up blank, cleaning tape is again from extruding
Gap between column and connecting plate B passes through, and is extruded cleaning tape, the cleaning solution in it is squeezed out, the mistake that cleaning solution is extruded
Cheng Zhonghui takes away the foul that wiping is formed, and uses a cleaning tape frequently for a long time.The personnel that teach simultaneously only need
It touches the button and is operated by control device, do not interfere to teach, improve efficiency of giving lessons, while also saving physical strength.
The writing whiteboard assists erasing apparatus, and cleaning tape includes belt layer and sponge belt, and belt layer bypasses power
Roller and driven voller, the two is linked, and sponge belt is located on the outside of belt layer.Belt layer selects sclerderm belt, sclerderm belt quality
It is harder, but can still be bent, it can be used as the base of sponge belt, enough support forces be provided.
The writing whiteboard assists erasing apparatus, and power device is located in sliding block, and power device includes vertical driving electricity
Machine and driving gear B, vertical driving motor are fixed in sliding block, and the shaft of vertical driving motor is equipped with driving gear B, column
Side is equipped with tooth, drives the tooth engagement of gear B and column side.Vertical driving motor belongs to self-locking motor, in vertical driving electricity
When machine does not work, shaft is to belong to lock state.When vertical driving motor rotates forward, driving gear B is matched with the tooth on column
Crossed belt movable slider moves down.When the reversion of vertical driving motor, driving gear B is moved up with the tooth mating band movable slider on column；It is perpendicular
Straight driving motor selects traditional direct current generator, and traditional direct current generator is equipped with electric machine controller, and electric machine controller is equipped with
Rotate forward operation button and reverse turn operation button.
The writing whiteboard assists erasing apparatus, and control circuit includes relay A, relay B, cleaning switch and playback
Switch, coil one end of relay A are connected to positive pole by cleaning switch, and the other end is connected to power cathode, relay A
Normally opened contact one end be connected to positive pole, the other end is connected to the contact at the rotating forward electric operating end of vertical driving motor；
The power end of driving motor A and water pump passes through second of relay A respectively and third normally opened contact is connected to power supply；
One end of the coil of relay B is connected to positive pole by the switch that playbacks, and the other end of the coil of relay B connects
It is connected to power cathode, normally opened contact one end of relay B is connected to positive pole, and the other end is connected to the anti-of vertical driving motor
Turn the contact at electric operating end.
The writing whiteboard assists erasing apparatus, and the rotating forward electric operating end of vertical driving motor is electric machine controller
On rotating forward operation button, the reversion electric operating end of vertical driving motor is the reverse turn operation button on electric machine controller,
For operation button there are two contact, a contact is connection accessory power supply, another contact is connected to the control in electric machine controller
Circuit, the contact at the rotating forward electric operating end of vertical driving motor described herein and the contact for inverting electric operating end,
The two contacts refer to be connected to the contact of the control circuit in electric machine controller.Realize that the normally opened contact of relay A closes
Close can simulated machine controller the effect pressed of rotating forward operation button.Realize the normally opened contact closure of relay B, so that it may
The effect pressed with the reverse turn operation button of simulated machine controller.
The writing whiteboard assists erasing apparatus, and three squeezing rods are respectively squeezing rod A, squeezing rod B and squeezing rod C,
The diameter of squeezing rod B is 1.2 times of the diameter of squeezing rod A, and the diameter of squeezing rod C is 1.2 times of squeezing rod B, squeezing rod A, is squeezed
The line that the center of circle of compression leg B and squeezing rod C are linked to be is parallel with connecting plate B.The diameter of three squeezing rods is gradually increased, but three are squeezed
The distance between compression leg and connecting plate B are greater than belt layer.Diameter is gradually increased, make sponge belt will receive degree of compression by it is small to
It is big to squeeze, it is extruded the cleaning solution level-one level-one in it, avoids being directly entered the excessive gap of degree of compression, makes the cleaning in it
Liquid sprays, and splashes, can not collect.
The writing whiteboard assists erasing apparatus, and cleaning solution flusher includes water receiving tank, the water positioned at plate top surface
Case, and it is mounted on the shower nozzle of top board undersurface, water receiving tank is connect with water tank by pipeline, and the water outlet of water tank passes through water pump
It is connected to shower nozzle；Water receiving tank is below the gap between three squeezing rods and connecting plate B.Cleaning solution is set to form circulation,
When cleaning solution is dirty enough, cleaning solution is replaced, and directly new cleaning solution has in water tank and releases, and by water receiving tank
Addition, it is very convenient.
The writing whiteboard assists erasing apparatus, and sink passes through they sup-port in plate top surface, and sink bottom surface is high
Degree is higher than water tank, and water tank is protruded at the end of drawing water of water pump, and is located at water tank bottom.
The writing whiteboard assists erasing apparatus, is all provided with fluted on two opposite sides of column, and sliding block is equipped with and opens
Mouthful, it is set in opening there are two roller, column passes through opening, and two rollers in opening are caught in groove, and can be rolled along groove.
The utility model has the beneficial effect that compared with prior art
Writing whiteboard described in the utility model assists erasing apparatus, and the application is cooperated using mobile device and cleaning device
Blank is cleaned in movement, it is only necessary to which operator touches the button, and the consumption of physical efficiency greatly reduces, eliminates simultaneously
The time to erase the board improves time in classroom utilization rate.In scale removal process, the spray head of cleaning solution is added in oriented cleaning tape, again
There is the function of squeezing out the dirty cleaning solution in cleaning tape, self-contained circulation greatly improves cleaning effect.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model top view；
Fig. 3 is the A-A cross-sectional view of Fig. 1；
Fig. 4 is cleaning device structural schematic diagram；
Fig. 5 is mobile device structural schematic diagram；
Fig. 6 is the utility model electrical schematic diagram.
In figure: 1, mobile device；2, column；3, power roller；4, cleaning tape；5, top plate；6, shower nozzle；7, connecting plate A；
8, driven voller；9, bottom plate；10, connecting plate B；11, groove；12, plug；13, guide post；14, guide sleeve；15, connecting rod；16, sliding block；
17, roller；18, it is open；19, sponge belt；20, belt layer；21, blank；22, connecting plate D；23, spring；24, tooth；25, it erects
Straight driving motor；26, gear B is driven；27, chain；28, gear A is driven；29, driving motor A；30, connecting plate C；31, it cleans
Device；32, water pump；33, water tank；34, water receiving tank；35, squeezing rod C；36, squeezing rod B；37, squeezing rod A；38, driven gear；
39, relay A；40, cleaning switch；41, playback switch；42, relay B.
Specific embodiment
The utility model embodiment is described further below with reference to the utility model:
Embodiment 1: as shown in figs 1 to 6, writing whiteboard described in the utility model assists erasing apparatus, including two are stood
Column 2, column 2 are equipped with mobile device 1, are connected with cleaning device 31 in mobile device 1；
Mobile device 1 is set there are two sliding block 16, and two sliding blocks 16 are separately mounted in two root posts 2, and two sliding blocks 16 are logical
It crosses two connecting rods 15 to connect, be set in every connecting rod 15 there are two guide sleeve 14, guide sleeve 14 is interior to be equipped with guide post 13, and guide post 13 passes through
14 one end of guide sleeve is connected to cleaning device 31, and the other end is equipped with plug 12；Spring 23 is equipped between guide sleeve 14 and cleaning device 31；
Power device is equipped in one of sliding block 16, power device band movable slider 16 is moved up and down along column 2；
Cleaning device 31 includes top plate 5, bottom plate 9 and the connecting plate A7, connecting plate B10 and the company that connect top plate 5 and bottom plate 9
Fishplate bar C30, connecting plate C30 are connected to again between connecting plate A7 and connecting plate B10；Power roller 3 is equipped between top plate 5 and bottom plate 9
With driven voller 8, power roller 3 and driven voller 8 can rotate between top plate 5 and bottom plate 9, cleaning tape 4 around power roller 3 with it is driven
Roller 8, the two is linked；The shaft of power roller 3 is equipped with driven gear 38, and 9 top surface of bottom plate is equipped with driving motor A29, driving electricity
The shaft of machine A29 is equipped with driving gear A28, and starting motor A drives power roller 3 to rotate by driven gear 38；Drive gear
A28 is driven with driven gear 38 by chain 27.
5 bottom surface of top plate is connected with three squeezing rods, and cleaning tape 4 is logical from the gap between three squeezing rods and connecting plate B10
It crosses；
Cleaning device 31 is equipped with cleaning solution flusher；
5 top surface of top plate and 9 bottom surface of bottom plate are respectively equipped with two connecting plate D22, are placed through leading for the connecting rod 15 of top
Two guide posts 13 of set 14 are connected respectively to two connecting plate D22 of 5 top surface of top plate, are placed through leading for the connecting rod 15 of lower section
Two guide posts 13 of set 14 are connected respectively to two connecting plate D22 of 9 bottom surface of bottom plate, and 23 sets of spring is in 13 outside of guide post, and position
Between connecting plate D22 and guide sleeve 14.
The writing whiteboard assists erasing apparatus, and two root posts 2 are located at the bracket two sides of blank 21, and pass through connecting plate
The bracket of D22 and blank 21 are attached, it is made to carry out position restriction between blank 21.Mobile device 1 drives cleaning device
31 move along the direction that column 2 limits, i.e., vertical moves up and down.In the process that mobile device 1 drives cleaning device 31 to move down
In, cleaning device 31 clears up the plate face of blank 21, and after the completion of cleaning, mobile device 1 drives 31 uplink of cleaning device again
Playback.The cleaning to blank 21 is realized with this, and in the process of cleaning, cleaning solution flusher sprays clearly constantly on cleaning tape 4
Washing lotion, that is, alcohol, then cleaning tape 4 clears up blank 21 under the drive of power roller 3, can clear up blank 21 very
Completely.After having cleared up blank 21, gap of the cleaning tape 4 again between squeezing rod and connecting plate B10 is passed through, and makes 4 quilt of cleaning tape
It squeezes, the cleaning solution in it is squeezed out, cleaning solution can take away the foul that wiping is formed during being extruded, make a cleaning tape
4 can frequently use for a long time.The personnel that teach simultaneously only need to touch the button to operate by control device, do not interfere to say
Class improves efficiency of giving lessons, while also saving physical strength.
The writing whiteboard assists erasing apparatus, and cleaning tape 4 includes belt layer 20 and sponge belt 19, belt layer 20 around
Power roller 3 and driven voller 8 are crossed, the two is linked, sponge belt 19 is located at 20 outside of belt layer.Belt layer 20 selects sclerderm belt
20,20 quality of sclerderm belt is harder, but can still be bent, and can be used as the base of sponge belt 19, provides enough support forces.
The writing whiteboard assists erasing apparatus, and power device is located in sliding block 16, and power device includes vertical driving
Motor 25 and driving gear B26, vertical driving motor 25 are fixed in sliding block 16, and the shaft of vertical driving motor 25, which is equipped with, drives
Moving gear B26,2 side of a root post are equipped with tooth 24, and driving gear B26 is engaged with the tooth 24 of 2 side of column.Vertical driving motor
25 belong to self-locking motor, and when vertical driving motor 25 does not work, shaft is to belong to lock state.When vertical driving motor 25
When rotating forward, driving gear B26 is moved down with the 24 mating band movable slider 16 of tooth on column 2.When the reversion of vertical driving motor 25, drive
Moving gear B26 is moved up with the 24 mating band movable slider 16 of tooth on column 2；Vertical driving motor 25 selects traditional direct current generator,
Traditional direct current generator is equipped with electric machine controller, and electric machine controller, which is equipped with, rotates forward operation button and reverse turn operation button.
The writing whiteboard assists erasing apparatus, and control circuit includes relay A39, relay B42, cleaning switch 40
Positive pole is connected to by cleaning switch 40 with coil one end of playback switch 41, relay A39, the other end is connected to power supply
Cathode, normally opened contact one end of relay A39 are connected to positive pole, and the other end is connected to the rotating forward electricity of vertical driving motor 25
The contact of dynamic operating side；The power end of driving motor A29 and water pump 32 passes through second of relay A39 and third often respectively
It opens contact and is connected to power supply；
One end of the coil of relay B42 is connected to positive pole by the switch 41 that playbacks, the coil of relay B42 it is another
One end is connected to power cathode, and normally opened contact one end of relay B42 is connected to positive pole, and the other end is connected to vertical driving
The contact at the reversion electric operating end of motor 25.
The writing whiteboard assists erasing apparatus, and the rotating forward electric operating end of vertical driving motor 25 is motor control
Rotating forward operation button on device, the reversion electric operating end of vertical driving motor 25 are that the reverse turn operation on electric machine controller is pressed
Button, for operation button there are two contact, a contact is connection accessory power supply, another contact is connected to the control in electric machine controller
Circuit processed, the contact at the rotating forward electric operating end of vertical driving motor 25 described herein and connecing for reversion electric operating end
Point, the two contacts refer to be connected to the contact of the control circuit in electric machine controller.Realize the normally opened touching of relay A39
Point closure can simulated machine controller the effect pressed of rotating forward operation button.Realize that the normally opened contact of relay B42 closes
It closes, so that it may the effect that the reverse turn operation button of simulated machine controller is pressed.
The writing whiteboard assists erasing apparatus, and three squeezing rods are respectively squeezing rod A37, squeezing rod B36 and extruding
Column C35, the diameter of squeezing rod B36 are 1.2 times of the diameter of squeezing rod A37, and the diameter of squeezing rod C35 is the 1.2 of squeezing rod B36
Times, the line that the center of circle of squeezing rod A37, squeezing rod B36 and squeezing rod C35 are linked to be is parallel with connecting plate B10.Three squeezing rods it is straight
Diameter is gradually increased, but the distance between three squeezing rods and connecting plate B10 are greater than belt layer 20.Being gradually increased for diameter, makes
Sponge belt 19 will receive the ascending extruding of degree of compression, is extruded the cleaning solution level-one level-one in it, avoids being directly entered
The excessive gap of degree of compression sprays the cleaning solution in it, splashes, can not collect.
The writing whiteboard assists erasing apparatus, cleaning solution flusher include positioned at 9 top surface of bottom plate water receiving tank 34,
Water tank 33, and it is mounted on the shower nozzle 6 of 5 bottom surface of top plate, water receiving tank 34 is connect with water tank 33 by pipeline, and water tank 33 goes out
The mouth of a river is connected to shower nozzle 6 by water pump 32；Under gap of the water receiving tank 34 between three squeezing rods and connecting plate B10
Side.So that cleaning solution is formed circulation, when cleaning solution is dirty enough, cleaning solution is replaced, and new cleaning solution is directly had into water
It is released in case 33, and by being added in water receiving tank 34, it is very convenient.
The writing whiteboard assists erasing apparatus, and sink passes through they sup-port in 9 top surface of bottom plate, and sink bottom surface is high
Degree is higher than water tank 33, and water tank 33 is protruded at the end of drawing water of water pump 32, and is located at 33 bottom of water tank.
The writing whiteboard assists erasing apparatus, and column is all provided with fluted 11 on two opposite sides, and sliding block 16 is set
There is opening 18, set in opening 18 there are two roller 17, column passes through opening 18, and two rollers 17 in opening 18 are caught in groove 11
It is interior, and can be rolled along groove 11.
Claims (7)
1. a kind of writing whiteboard assists erasing apparatus, including two root posts, which is characterized in that column is equipped with mobile device, moves
Cleaning device is connected on dynamic device；
Mobile device is set there are two sliding block, and two sliding blocks are separately mounted in two root posts, and two sliding blocks pass through two connecting rods
It connecting, is set in every connecting rod there are two guide sleeve, guide sleeve is interior to be equipped with guide post, and guide post passes through guide sleeve one end and is connected to cleaning device,
The other end is equipped with plug；Spring is equipped between guide sleeve and cleaning device；Power device, power device band movable slider are equipped in sliding block
It is moved up and down along column；
Cleaning device includes top plate and bottom plate and connecting plate A, connecting plate B and the connecting plate C for connecting top plate and bottom plate, connecting plate C
It is connected between connecting plate A and connecting plate B again；Power roller and driven voller are equipped between top plate and bottom plate, cleaning tape bypasses power
Roller and driven voller, the two is linked；The shaft of power roller is equipped with driven gear, and plate top surface is equipped with driving motor A, driving electricity
The shaft of machine A is equipped with driving gear A, and starting motor A drives power roller rotation by driven gear；Drive gear A and passive
Gear passes through chain drive；
Top board undersurface is connected with three squeezing rods, and cleaning tape passes through from the gap between three squeezing rods and connecting plate B；
Cleaning device is equipped with cleaning solution flusher；
Top plate top surface and bottom plate bottom surface are respectively equipped with two connecting plate D, and two for being placed through the guide sleeve of the connecting rod of top lead
Column is connected respectively to two connecting plate D of top plate top surface, and two guide posts for being placed through the guide sleeve of the connecting rod of lower section connect respectively
Two connecting plate D of bottom plate bottom surface are connected to, spring pocket is on the outside of guide post, and between connecting plate D and guide sleeve.
Cleaning tape includes belt layer and sponge belt, and belt layer bypasses power roller and driven voller, the two is linked, sponge belt position
On the outside of belt layer；Belt layer selects sclerderm belt.
2. writing whiteboard according to claim 1 assists erasing apparatus, which is characterized in that power device is located in sliding block,
Power device includes vertical driving motor and driving gear B, and vertical driving motor is fixed in sliding block, and vertical driving motor turns
Axis is equipped with driving gear B, and column side is equipped with tooth, drives the tooth engagement of gear B and column side.
3. writing whiteboard according to claim 2 assists erasing apparatus, which is characterized in that control circuit include relay A,
Relay B, cleaning switch and playback switch, coil one end of relay A is connected to positive pole, the other end by cleaning switch
It is connected to power cathode, normally opened contact one end of relay A is connected to positive pole, and the other end is connected to vertical driving motor
Rotate forward the contact at electric operating end；The power end of driving motor A and water pump passes through second of relay A and third often respectively
It opens contact and is connected to power supply；
One end of the coil of relay B is connected to positive pole by the switch that playbacks, and the other end of the coil of relay B is connected to
Power cathode, normally opened contact one end of relay B are connected to positive pole, and the other end is connected to the reversion electricity of vertical driving motor
The contact of dynamic operating side.
4. writing whiteboard according to claim 3 assists erasing apparatus, which is characterized in that three squeezing rods are respectively to squeeze
Column A, squeezing rod B and squeezing rod C, the diameter of squeezing rod B are 1.2 times of the diameter of squeezing rod A, and the diameter of squeezing rod C is to squeeze
1.2 times of column B, the line that the center of circle of squeezing rod A, squeezing rod B and squeezing rod C are linked to be is parallel with connecting plate B.
5. writing whiteboard according to claim 4 assists erasing apparatus, which is characterized in that cleaning solution flusher includes position
Water receiving tank, water tank in plate top surface, and it is mounted on the shower nozzle of top board undersurface, water receiving tank and water tank are connected by pipeline
It connects, the water outlet of water tank is connected to shower nozzle by water pump；Gap of the water receiving tank between three squeezing rods and connecting plate B
Lower section.
6. writing whiteboard according to claim 5 assists erasing apparatus, which is characterized in that sink is existed by they sup-port
Plate top surface, and sink floor height is higher than water tank, water tank is protruded at the end of drawing water of water pump, and is located at water tank bottom.
7. writing whiteboard according to claim 6 assists erasing apparatus, which is characterized in that on two opposite sides of column
It is all provided with fluted, sliding block is equipped with opening, sets in opening there are two roller, and column passes through opening, and two rollers in opening are caught in
In groove, and it can be rolled along groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820683699.XU CN208469414U (en) | 2018-05-03 | 2018-05-03 | Writing whiteboard assists erasing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820683699.XU CN208469414U (en) | 2018-05-03 | 2018-05-03 | Writing whiteboard assists erasing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208469414U true CN208469414U (en) | 2019-02-05 |
Family
ID=65220824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820683699.XU Expired - Fee Related CN208469414U (en) | 2018-05-03 | 2018-05-03 | Writing whiteboard assists erasing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208469414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604025A (en) * | 2022-03-21 | 2022-06-10 | 重庆市捷晟工程项目管理有限公司 | Engineering project cost risk management device |
-
2018
- 2018-05-03 CN CN201820683699.XU patent/CN208469414U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604025A (en) * | 2022-03-21 | 2022-06-10 | 重庆市捷晟工程项目管理有限公司 | Engineering project cost risk management device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20200503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |