CN206297326U - A kind of device for wiping and absorbing dust - Google Patents
A kind of device for wiping and absorbing dust Download PDFInfo
- Publication number
- CN206297326U CN206297326U CN201621147397.8U CN201621147397U CN206297326U CN 206297326 U CN206297326 U CN 206297326U CN 201621147397 U CN201621147397 U CN 201621147397U CN 206297326 U CN206297326 U CN 206297326U
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- Prior art keywords
- housing
- dust
- wipe
- motor
- back shroud
- 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
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- 239000000428 dust Substances 0.000 title claims abstract description 94
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 210000002268 wool Anatomy 0.000 claims abstract description 34
- 239000000835 fiber Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
A kind of device for wiping and absorbing dust, including housing, wipe wool top, dust collecting box, dust collection mechanism and telescoping mechanism, the one side that the housing is used to wipe is provided with Lou dirt notch, the leakage dirt notch is at least provided with three, and it is arranged in parallel, the one side that the housing is used to wipe is provided with several wiping wool tops, and the leakage dirt notch distributes alternately with the wiping wool top, described to wipe wool top and the case bonding；The housing upper is provided with the first screwed hole, and is provided with to block the baffle mechanism of the leakage dirt notch using first screwed hole；The telescoping mechanism is connected to the outer surface of the back shroud；The bottom of housing described in the dust collecting box detachable connection, and the dust collecting box connects with the enclosure interior.The utility model improves wiping efficiency, while also improving the effect of dust suction, is satisfied with the use requirement of different height crowds.
Description
Technical field
The utility model is related to compact electric apparatus technical field, and in particular to a kind of wiping simultaneously absorbs the device of dust.
Background technology
Need to wipe article under many daily occasions, such as need to wipe blackboard in learning process, wipe
Dust easily is produced when wiping, the pollution of environment is caused, is unfavorable for that people's is healthy.
Utensil structure used by wiping now is very simple, and some are only that surface has the wiping utensil of hairbrush, but
The wiping utensil of this structure, can't resolve the problem of dust from flying；The larger wiping with dust-absorbing function of another volume
Utensil, but due to wiping the hairbrush of utensil than comparatively dense, pick-up performance is very poor, and existing hairbrush is not suitable for different bodies
Crowd high uses.
Utility model content
For defect of the prior art, the utility model provides a kind of device for wiping and absorbing dust, improves suction
The effect of dirt, it is to avoid dust flies upward everywhere, very facilitates during operation, and time saving and energy saving, the intensity of work is alleviated, while can
Used with the crowd for meeting different heights.
To reach above-mentioned purpose, the utility model is adopted the following technical scheme that:
It is a kind of to wipe and absorb the device of dust, including housing, wipe wool top, dust collecting box, dust collection mechanism and flexible
Mechanism, the one side that the housing is used to wipe is provided with Lou dirt notch, and the leakage dirt notch is parallel to each other and sets at least provided with three
Put, the one side that the housing is used to wipe is provided with several wiping wool tops, the leakage dirt notch and the wiping wool top phase
Between be distributed, it is described wipe wool top and the case bonding；The housing upper is provided with the first screwed hole, and utilizes first spiral shell
Pit is provided with to block the baffle mechanism of the leakage dirt notch；
The baffle mechanism includes baffle plate, caging bolt and stop nut, and the baffle plate includes riser and flat board, described vertical
Three strips mouthful are offered on plate, the strip mouthful is corresponded with the leakage dirt notch；The flat board offers a unthreaded hole,
The caging bolt engagement is installed in first screwed hole, and the caging bolt end is actively located in the unthreaded hole,
Stop nut is traditionally arranged to be two, and two nuts are mounted on the caging bolt, and two nuts are by flat board
It is limited in the middle of both, spacing so as to the flat board be carried out in the axial direction of the caging bolt, now, caging bolt exists
The first screwed hole internal messing is rotated, and the end of caging bolt can freely rotate in unthreaded hole, so that caging bolt can be with
Drive baffle plate to realize upper and lower motion, in order to ensure the kinetic stability of riser, the both sides of riser are provided with slide rail；
The housing another side is provided with the dust collection mechanism, the dust collection mechanism include back shroud, fan blade, switch,
Motor and power supply, the outer surface of the back shroud are provided with the switch, the motor and the power supply, and the rotating shaft of the motor is worn
Cross the back shroud, the rotating shaft is provided with the fan blade, the fan blade is located at the inside of the housing, it is described after
Cover plate and the housing detachable connection；
The telescoping mechanism is connected to the outer surface of the back shroud, the telescoping mechanism include fix bar, elongation bar and
Fastening bolt, the top of the fix bar is connected with the outer surface of the back shroud, and middle cavity is offered inside the elongation bar
Body, the end of the fix bar is slided and is plugged in the hollow cavity of the elongation bar, and the side wall of the elongation bar offers the
Two screwed holes, fastening bolt engagement is installed in second screwed hole, the fastening bolt end and the fix bar
Outer wall contact；
In the bottom of housing described in the dust collecting box detachable connection, and the dust collecting box and the housing
Portion connects, and the housing is provided with tapering slot with the connectivity part of the dust collecting box, and the side wall of the dust collecting box sets
There is air outlet.
As a kind of perferred technical scheme, the air outlet is provided with screen pack, and the mesh aperture of the screen pack is not
More than 3mm.
As a kind of perferred technical scheme, the end of the elongation bar is provided with a hanging hole, and the hanging hole runs through
Two relative side.
As a kind of perferred technical scheme, the wiping wool top is brown wool component.
As a kind of perferred technical scheme, the motor include the first motor and the second motor, first motor and
The first fan blade and the second fan blade are correspondingly provided with second motor.
As a kind of perferred technical scheme, the back shroud is bolted with the housing, the dust collection
Box and the housing equally use bolt connection.
As a kind of perferred technical scheme, the back shroud outer surface is provided with two with first motor and second
The one-to-one ventilator cowling of motor, the ventilator cowling and the back shroud are adhesively fixed.
Due to using above technical scheme, the utility model has the advantages that：
The utility model provides a kind of device for wiping and absorbing dust, including：Housing, wipe wool top, dust collecting box,
Dust collection mechanism and telescoping mechanism, the one side that the housing is used to wipe are provided with Lou dirt notch, and the leakage dirt notch is at least provided with three
Individual and arranged in parallel, the one side that the housing is used to wipe is provided with several wiping wool tops, the leakage dirt notch with
The wiping wool top distributes alternately, and two sides of the housing are all the wiping wool top, the wiping wool top and the housing
Bonding；The housing upper is provided with the first screwed hole, and is provided with to block the leakage dirt groove using first screwed hole
The baffle mechanism of mouth；The baffle mechanism includes baffle plate, caging bolt and stop nut, and the baffle plate includes riser and flat board,
Three strips mouthful are offered on the riser, the strip mouthful is corresponded with the leakage dirt notch；The flat board offers one
Individual unthreaded hole, the caging bolt engagement is installed in first screwed hole, and the caging bolt end is actively located in described
In unthreaded hole；Based on above structure, the dust can be entered in the dust collecting box by the leakage dirt notch, dust collection
Scope expands, it is to avoid because bristle it is intensive caused by the poor problem of pick-up performance, improve collection dust efficiency；Simultaneously because setting
There are several to wipe wool top, wipe more totally, and save the time, alleviate labour intensity.
Stop nut is traditionally arranged to be two, and two nuts are mounted on the caging bolt, and two spiral shells
Be limited in flat board in the middle of both by mother, spacing so as to the flat board be carried out in the axial direction of the caging bolt, now, limit
Position bolt is rotated in the first screwed hole internal messing, and the end of caging bolt can freely rotate in unthreaded hole, so that spacing
Bolt can drive baffle plate to realize upper and lower motion, in order to ensure the kinetic stability of riser, the both sides of riser be provided with cunning
Rail；Based on above structure, when being stopped, the dust in the housing will not be overflow the motor by the leakage dirt notch
Go out, it is to avoid dust everywhere flies upward.
The housing another side is provided with the dust collection mechanism, and the dust collection mechanism includes：Back shroud, fan blade, switch,
Motor and power supply, the outer surface of the back shroud are provided with the switch, the motor and the power supply, and the rotating shaft of the motor is worn
The back shroud is crossed, the rotating shaft front end is provided with the fan blade, and the fan blade is located at the inside of the housing, institute
Back shroud is stated with the housing detachable connection；Based on above structure, the suction that the dust collection mechanism absorbs dust is very strong, keeps away
Exempt from dust to fly upward everywhere, influence people's is healthy.
The telescoping mechanism is connected to the lower surface of the back shroud, and the telescoping mechanism includes：Fix bar, elongation bar and
Fastening bolt, the top of the fix bar is connected with the back shroud, and hollow cavity is offered inside the elongation bar, described solid
The end of fixed pole is slided and is plugged in the hollow cavity of the elongation bar, and the side wall of the elongation bar offers the second screwed hole,
Fastening bolt engagement is installed in second screwed hole, the outer wall top of the fastening bolt end and the fix bar
Touch；Based on above structure, fix bar can adjust the depth of insertion in the elongation bar, and be fixed using fastening bolt, from
And the adjustment to whole device is realized, the height according to human body itself is come adjustment length at any time, it is adaptable to the crowd of different heights,
It is more time saving and energy saving during operation, it is very convenient.
In the bottom of housing described in the dust collecting box detachable connection, and the dust collecting box and the housing
Portion connects, and the surface that the dust collecting box is connected with the enclosure interior is provided with a matrix long rabbet, the dust collection
Box side wall is provided with air outlet；Based on above structure, dust can be entered into dust collecting box by the housing, can be timely
Remove the dust of the dust collecting box.
In the utility model, the air outlet is provided with screen pack, and the mesh aperture of the screen pack is not more than 3mm；
And inventor has found, when the mesh using aperture 2mm, best results not only ensure that ventilation, it is also possible to by air-breathing
Dust retained to greatest extent, it is ensured that the dust collection in suction air is to the dust collecting box.
In the utility model, the end of the elongation bar is provided with a hanging hole, and the hanging hole runs through two opposite sides
Face；Based on above structure, a kind of device hang-up for wiping and absorbing dust is saved by the hanging hole when not in use
Space has been saved, it is very convenient.
In the utility model, the wiping wool top is brown wool component；Based on above structure, the wiping wool top absorption
Power is strong, wipes more totally, time-consuming.
In the utility model, the motor includes the first motor and the second motor, first motor and the second motor
On be correspondingly provided with the first fan blade and the second fan blade；Based on above structure, the suction of the dust collection mechanism can be strengthened,
Improve the efficiency for absorbing dust.
In the utility model, the appliance plate lower surface is provided with two ventilator cowlings, two ventilator cowlings and the first motor
Corresponded with the second motor, the ventilator cowling and the appliance plate are adhesively fixed；Based on above structure, produced during motor operations
Heat can distribute, the service life of motor is longer.
In the utility model, the appliance plate is bolted with the housing, the dust collecting box and described
Housing equally uses bolt connection；Based on above structure, the housing can be timely cleaned, keep the enclosure interior whole
It is clean, while removing the dust of the dust collecting box in time.
In sum, the utility model improves wiping efficiency, while also improving the effect of dust suction, is satisfied with different bodies
The use requirement of crowd high.
Brief description of the drawings
In order to illustrate more clearly of the utility model specific embodiment or technical scheme of the prior art, below will be right
The accompanying drawing to be used needed for specific embodiment or description of the prior art is briefly described.In all of the figs, it is similar
The general reference by being similar to of element or part is identified.In accompanying drawing, each element or part might not be according to actual ratios
Draw.
Fig. 1 is a dimensional structure diagram of the present utility model；
Fig. 2 is another dimensional structure diagram of the present utility model；
Fig. 3 is the structural representation of dust collection mechanism；
Fig. 4 is the side structure schematic diagram of dust collection mechanism；
Fig. 5 is the structural representation of baffle mechanism；
Fig. 6 is the structural representation of dust collecting box.
Specific embodiment
Technical solutions of the utility model are described in detail below in conjunction with specific embodiment.Following examples are only used
In clearly illustrating the technical solution of the utility model, therefore example is only used as, and it is new that this practicality can not be limited with this
The protection domain of type.
As shown in figure 1, a kind of device for wiping and absorbing dust, including housing 1, wiping wool top 2, dust collecting box 3, suction
Dirt mechanism 4 and telescoping mechanism 5, the one side that the housing is used to wipe are provided with Lou dirt notch 11, and the leakage dirt notch 11 at least sets
There are three, and it is arranged in parallel.In the present embodiment, the notch selection of leakage dirt is three, and the presence for leaking dirt notch improves tradition
The eraser structure bristle defect more very poor than comparatively dense, pick-up performance, can carry out maximum using the dust that dirt notch will fly upward is leaked
The suction of limit, greatly improves the effect and efficiency of dust suction.
The one side that the housing is used to wipe is provided with several wiping wool tops 2, the leakage dirt notch 11 and the wiping
Wipe wool top 2 to distribute alternately, the wiping wool top 2 and the housing 1 are bonded.Accordingly, four wipings are provided with the present embodiment
Wool top so that leakage dirt notch 11 is between wiping wool top 2, it is ensured that the effect of wiping.Meanwhile, the wiping wool top is palm fibre
Wool component, brown wool component is wear-resistant, and wiping effect is also further improved.
The top of the housing 1 is provided with the first screwed hole 12, and is provided with to block described using first screwed hole
Leak the baffle mechanism of dirt notch.The presence of baffle mechanism ensure that blocks leakage dirt notch after the completion of wiping, dust suction work,
Avoid the dust in housing from therefrom overflowing, cause secondary pollution.
As shown in figure 5, in the present embodiment, the baffle mechanism that inventor have selected a kind of simple structure, be easily achieved.It is described
Baffle mechanism includes baffle plate 13, caging bolt 14 and stop nut 15, and the baffle plate 13 includes riser and flat board, on the riser
Three strips mouthful 16 are offered, the strip mouthful 16 is corresponded with the leakage dirt notch 11；The flat board offers a light
Hole, the caging bolt engagement is installed in first screwed hole, and the end of the caging bolt 14 is actively located in the light
In hole, stop nut 15 is traditionally arranged to be two, and two nuts are mounted on the caging bolt, and two nuts
Flat board is limited in the middle of both, it is spacing so as to the flat board be carried out in the axial direction of the caging bolt, it is now, spacing
Bolt is rotated in the first screwed hole internal messing, and the end of caging bolt can freely rotate in unthreaded hole, so that spacing spiral shell
Bolt can drive baffle plate to realize upper and lower motion, when baffle plate moves to rational position, strip mouthful can the exposure of leakage dirt notch or
Block, so as to realize selectively unlocking, the sealing process to leakage dirt notch 11.In order to ensure the kinetic stability of riser, vertical
The both sides of plate are provided with slide rail (not shown).
As shown in figs 2-4, the another side of the housing 1 is provided with the dust collection mechanism 4, and the dust collection mechanism 4 includes bonnet
Plate 41, fan blade 42, switch 43, motor 44 and power supply (not shown), (outer surface refers to for the outer surface of the back shroud
Towards the one side of the hull outside during normal mounting) it is provided with the switch 43, motor 44 and the power supply, the motor
44 rotating shaft passes through the back shroud 41, and the rotating shaft is provided with the fan blade 42, and the fan blade 42 is located at described
The inside of housing 1, the back shroud 41 and the detachable connection of the housing 1, selection is bolt connection in the present embodiment.Power supply
Using wire connection motor, switch, using the start and stop of switch control motor, operate for convenience, switch is arranged on back shroud
On, those skilled in the art should know circuit connecting relation.It is laid out for convenience, can will be provided with what is caved on back shroud
Groove, the motor arrangement is in the groove.Fan blade is driven by the rotation of motor, suction is produced in housing, flown
The dust raised from leakage dirt notch suction casing, realizes dust suction process.
In order to increase suction, the motor 44 includes the first motor and the second motor, first motor and the second motor
On be correspondingly provided with the first fan blade and the second fan blade.Certainly, in order to further increase suction, motor can be provided with more
Multiple, but the consideration in cost, are set to two herein.
The back shroud outer surface be provided with two with first motor and the one-to-one ventilator cowling 45 of the second motor,
The ventilator cowling 45 and the back shroud are adhesively fixed.The heat produced during motor operations can be distributed, the use of motor
Life-span is longer.
The telescoping mechanism 5 is connected to the outer surface of the back shroud 41, and the telescoping mechanism 5 includes fix bar 51, stretches
Stock 52 and fastening bolt 53, the top of the fix bar are connected with the outer surface of the back shroud, are opened inside the elongation bar
Hollow cavity is provided with, the end of the fix bar is slided and is plugged in the hollow cavity of the elongation bar, the elongation bar 52
Side wall offers the second screwed hole, and the engagement of the fastening bolt 53 is installed in second screwed hole, the fastening bolt 53
End contacts with the outer wall of the fix bar.Fix bar can adjust the depth of insertion in the elongation bar, and using fastening
Bolt is fixed, so as to realize the adjustment to whole device, the height according to human body itself is come adjustment length at any time, it is adaptable to different
The crowd of height, it is more time saving and energy saving during operation, it is very convenient.The end of the elongation bar 52 is provided with a hanging hole 54,
The hanging hole 54 runs through two relative side, when not in use by the way that the hanging hole is by a kind of wiping and absorbs dust
Device is hung up, and saves space, very convenient.
As shown in fig. 6, the bottom of housing described in the detachable connection of the dust collecting box 3, in the present embodiment, detachably
Formula is connected by bolt connection, and the dust collecting box 3 is connected with the inside of the housing 1, and the housing is received with the dust
The connectivity part for collecting box is provided with tapering slot 31, and the side wall of the dust collecting box is provided with air outlet 33, on the air outlet 33
Screen pack 32 is provided with, the mesh aperture of the screen pack 32 is not more than 3mm, in the present embodiment, the mesh aperture choosing of screen pack 32
2mm is selected as, when the mesh using aperture 2mm, best results not only ensure that ventilation, it is also possible to by the dust in air-breathing
Retained to greatest extent, it is ensured that the dust collection in suction air is to the dust collecting box.Tapering slot use from
Housing to the diminishing passage of dust collecting box bore, dust from tapering slot into dust collecting box after be difficult to return to shell again
In vivo.
Finally it should be noted that：Various embodiments above is only used to illustrate the technical solution of the utility model, rather than it is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover in the middle of the scope of claim of the present utility model and specification.
Claims (7)
- It is 1. a kind of to wipe and absorb the device of dust, it is characterised in that：Including housing, wipe wool top, dust collecting box, vacuum cleaner Structure and telescoping mechanism, the one side that the housing is used to wipe are provided with Lou dirt notch, and the leakage dirt notch is at least provided with three, and phase Mutually it be arranged in parallel, the one side that the housing is used to wipe is provided with several wiping wool tops, the leakage dirt notch and the wiping Wool top is wiped to distribute alternately, it is described to wipe wool top and the case bonding；The housing upper is provided with the first screwed hole, and utilizes institute The first screwed hole is stated to be provided with to block the baffle mechanism of the leakage dirt notch；The housing another side is provided with the dust collection mechanism, and the dust collection mechanism includes back shroud, fan blade, switch, motor And power supply, the outer surface of the back shroud is provided with the switch, the motor and the power supply, and the rotating shaft of the motor passes through institute Back shroud is stated, the rotating shaft is provided with the fan blade, and the fan blade is located at the inside of the housing, the back shroud With the housing detachable connection；The telescoping mechanism is connected to the outer surface of the back shroud, and the telescoping mechanism includes：Fix bar, elongation bar and fastening Bolt, the top of the fix bar is connected with the outer surface of the back shroud, and hollow cavity, institute are offered inside the elongation bar The end slip for stating fix bar is plugged in the hollow cavity of the elongation bar, and the side wall of the elongation bar offers the second screw thread Hole, fastening bolt engagement is installed in second screwed hole, the outer wall of the fastening bolt end and the fix bar Contact；The bottom of housing described in the dust collecting box detachable connection, and the dust collecting box connects with the enclosure interior Logical, the housing is provided with tapering slot with the connectivity part of the dust collecting box, and the side wall of the dust collecting box is provided with out Air port, the air outlet is provided with screen pack.
- It is 2. according to claim 1 a kind of to wipe and absorb the device of dust, it is characterised in that：The mesh of the screen pack Aperture is not more than 3mm.
- It is 3. according to claim 2 a kind of to wipe and absorb the device of dust, it is characterised in that：The end of the elongation bar A hanging hole is provided with, the hanging hole runs through two relative side.
- It is 4. according to claim 1 a kind of to wipe and absorb the device of dust, it is characterised in that：The wiping wool top is palm fibre Wool component.
- It is 5. according to claim 1 a kind of to wipe and absorb the device of dust, it is characterised in that：The motor includes first Motor and the second motor, are correspondingly provided with the first fan blade and the second fan blade on first motor and the second motor.
- It is 6. according to claim 1 a kind of to wipe and absorb the device of dust, it is characterised in that：The back shroud with it is described Housing is bolted, and the dust collecting box and the housing equally use bolt connection.
- It is 7. according to claim 5 a kind of to wipe and absorb the device of dust, it is characterised in that：The back shroud lower surface Two are provided with to be bonded with first motor and the one-to-one ventilator cowling of the second motor, the ventilator cowling and the back shroud It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147397.8U CN206297326U (en) | 2016-10-21 | 2016-10-21 | A kind of device for wiping and absorbing dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621147397.8U CN206297326U (en) | 2016-10-21 | 2016-10-21 | A kind of device for wiping and absorbing dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206297326U true CN206297326U (en) | 2017-07-04 |
Family
ID=59203679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621147397.8U Expired - Fee Related CN206297326U (en) | 2016-10-21 | 2016-10-21 | A kind of device for wiping and absorbing dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206297326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081834A (en) * | 2017-12-12 | 2018-05-29 | 郑州赫恩电子信息技术有限公司 | A kind of telescopic automatic dust-absorption blackboard eraser of middle and primary schools |
| CN112428722A (en) * | 2020-11-09 | 2021-03-02 | 惠州学院 | Writing board with automatic cleaning function |
-
2016
- 2016-10-21 CN CN201621147397.8U patent/CN206297326U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081834A (en) * | 2017-12-12 | 2018-05-29 | 郑州赫恩电子信息技术有限公司 | A kind of telescopic automatic dust-absorption blackboard eraser of middle and primary schools |
| CN112428722A (en) * | 2020-11-09 | 2021-03-02 | 惠州学院 | Writing board with automatic cleaning function |
| CN112428722B (en) * | 2020-11-09 | 2022-03-08 | 惠州学院 | Writing board with automatic cleaning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20181021 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |