CN108688387A - A kind of blackboard eraser of dust-proof anti-accumulation - Google Patents
A kind of blackboard eraser of dust-proof anti-accumulation Download PDFInfo
- Publication number
- CN108688387A CN108688387A CN201810786951.4A CN201810786951A CN108688387A CN 108688387 A CN108688387 A CN 108688387A CN 201810786951 A CN201810786951 A CN 201810786951A CN 108688387 A CN108688387 A CN 108688387A
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- scrubbing brush
- dust
- collecting tank
- offered
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a kind of blackboard erasers of dust-proof anti-accumulation, including blackboard eraser frame, it is provided with wiping chamber in the blackboard eraser frame, it is rotatably connected to driven scrubbing brush and active scrubbing brush on the inner wall of the wiping chamber, the side of the active scrubbing brush is socketed with conveyer belt, collecting tank is offered on the downside of the blackboard eraser frame, mounting groove is offered on the downside of the collecting tank, it is connected with dust box in the mounting groove, the first opening is offered on the collecting tank, the second opening is offered on the mounting groove.The present invention in blackboard eraser lower portion by disposing scrubbing brush, the wiping mode of brush can effectively avoid the problem that dust adheres on original blackboard eraser surface and accumulate, simultaneously collecting tank and mounting groove are opened up in inside, the dust collection that can will be wiped avoids the occurrence of during erasing the board and dust from flying appearance is in the presence of.
Description
Technical field
The present invention relates to blackboard eraser technical field more particularly to a kind of blackboard erasers of dust-proof anti-accumulation.
Background technology
What modern most of teaching used is write on blackboard by chalk, by blackboard eraser by word after writing
Erasing, but there are certain pollution problems when blackboard eraser use.
1. blackboard eraser is will to adhere to the erasing of the letter written with chalk on blackboard by the friction mutual with blackboard, repeatedly back and forth
During erasing, chalk dust can fall and fly upward, and the essence of chalk dust is lime, and teacher breathes into excessive chalk dust, to lung
Portion be easy to cause injury.
2. blackboard eraser long-time blackboard wiping after wiping across more letter written with chalks, can be attached to blackboard eraser surface many
Chalk dust adheres to after excessive chalk dust blackboard wiping again, and wiping the effect of letter written with chalk can substantially reduce, when needing repeatedly
It waits and is reused after patting chalk dust.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, such as:Blackboard eraser is when blackboard wiping
It is be easy to cause dust from flying, and is easy accumulation chalk dust on blackboard eraser, and a kind of blackboard eraser of the dust-proof anti-accumulation proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of blackboard eraser of dust-proof anti-accumulation, including blackboard eraser frame are provided with wiping chamber, institute in the blackboard eraser frame
It states and is rotatably connected to driven scrubbing brush and active scrubbing brush on the inner wall of wiping chamber, the side of the active scrubbing brush is socketed with conveyer belt,
Collecting tank is offered on the downside of the blackboard eraser frame, and mounting groove is offered on the downside of the collecting tank, is blocked in the mounting groove
It is connected to dust box, the first opening is offered on the collecting tank, the second opening is offered on the mounting groove.
Preferably, the side of the active scrubbing brush is rotatably connected to dead axle, and shaft is fixedly connected on the dead axle, described
Clockwork spring is installed between shaft and active scrubbing brush.
Preferably, the side of the driven scrubbing brush is fixedly connected with turntable, and universal driving shaft, institute are rotatably connected on the turntable
It states and is rotatably connected to the first unidirectional piece in the first opening, the second unidirectional piece, the collection are rotatably connected in second opening
Slide-bar is slidably connected in slot, sliding mouth is further opened on the collecting tank, and the universal driving shaft passes through sliding mouth, the universal driving shaft separate
One end of turntable is rotatablely connected with slide-bar, and the one end of the slide-bar far from universal driving shaft is fixedly connected with sliding block, and described first is unidirectional
The slewing area of piece is 0-90 ° under horizontal direction, 0-90 ° under the slewing area horizontal direction of the second unidirectional piece.
Compared with prior art, the beneficial effects of the invention are as follows:By disposing scrubbing brush in blackboard eraser lower portion, brush
Wiping mode can effectively avoid the problem that dust adheres on original blackboard eraser surface and accumulate, while open up collecting tank in inside
And mounting groove, the dust collection that can will be wiped avoid the occurrence of and occur dust from flying during erasing the board
Situation occurs.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the blackboard eraser of dust-proof anti-accumulation proposed by the present invention;
Fig. 2 is a kind of structural schematic diagram of the blackboard eraser active scrubbing brush of dust-proof anti-accumulation proposed by the present invention;
Fig. 3 is structural schematic diagram at A in Fig. 1;
Fig. 4 is that a kind of blackboard eraser of dust-proof anti-accumulation proposed by the present invention moves right status architecture schematic diagram;
Fig. 5 is the structural schematic diagram at A1 in Fig. 4;
Fig. 6 is the structural schematic diagram at B in Fig. 4;
Fig. 7 is the structural schematic diagram that a kind of blackboard eraser of dust-proof anti-accumulation proposed by the present invention is moved to the left state;
Fig. 8 is the structural schematic diagram at A2 in Fig. 7;
Fig. 9 is the structural schematic diagram at C in Fig. 7.
In figure:1 blackboard eraser frame, 2 turntables, 3 universal driving shafts, 4 driven scrubbing brushes, 5 conveyer belts, 6 wiping chambers, 7 shafts, 8 are actively
Mouth, 16 cunnings are slided in scrubbing brush, 9 first unidirectional pieces, 10 collecting tanks, 11 second unidirectional pieces, 12 dust boxes, 13 mounting grooves, 14 slide-bars, 15
Block.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation, with
Specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Embodiment one:
Referring to Fig.1-2, a kind of blackboard eraser of dust-proof anti-accumulation, including blackboard eraser frame 1 are provided in blackboard eraser frame 1
Chamber 6 is wiped, wipes and is rotatably connected to driven scrubbing brush 4 and active scrubbing brush 8 on the inner wall of chamber 6, the side of active scrubbing brush 8 is socketed with biography
Send band 5, the downside of blackboard eraser frame 1 offers collecting tank 10, and the downside of collecting tank 10 offers mounting groove 13, in mounting groove 13
It is connected with dust box 12, the first opening is offered on collecting tank 10, the second opening is offered on mounting groove 13;
Wherein, the side of active scrubbing brush 8 is rotatably connected to dead axle, and shaft 7, shaft 7 and active are fixedly connected on dead axle
Clockwork spring is installed between scrubbing brush 8, using dead axle as tie point, the shaft 7 on the upside of dead axle is shorter, and the shaft 7 on the downside of dead axle is longer, but
It is since the upper end of shaft 7 is lighter, lower end is heavier, and the position of centre of gravity of shaft 7 is on the lower side, when user's mobile blackboard wipes frame 1
When movement to the right, there is object inertia to keep original motion state, since the lower end of shaft 7 is compared to upper end weight, turn
Axis 7 is rotated clockwise in inertia force effect lower stress, and shaft 7 can still keep movement after rotating clockwise, at this time
Shaft 7 will be subject to centrifugal forces, and the lower end of shaft 7 will cause shaft 7 with fixed towards the periphery movement in the movement center of circle
Circular motion clockwise is done centered on axis, in the booster action of clockwork spring, after shaft 7 rotated certain angle so that actively
Scrubbing brush 8 can rotate multi-turn, and to which shaft 7 drives active scrubbing brush 8 to rotate by dead axle, active scrubbing brush 8 is driven by conveyer belt 5
Entire driven scrubbing brush 4 rotates, so the active scrubbing brush 8 and driven scrubbing brush 4 in blackboard eraser frame 1 with blackboard direct friction when
It waits, while driven scrubbing brush 4 and active scrubbing brush 8 will also rotate, driven scrubbing brush 4 and active scrubbing brush 8 can be while moving horizontally
Rotation is carried out, rotation can improve the effect of wiping letter written with chalk, reduce the wiping back and forth of user, can reduce the labor of user
Power, since driven scrubbing brush 4 and active scrubbing brush 8 are brush, there is no the accumulation problem of chalk dust, while the powder wiped
Ash, which can be fallen, to be trapped in blackboard eraser frame 1, is finally collected by dust box 12 into collecting tank 10, and by collecting tank 10
Get up, chalk dust will not be flown upward.
And the mode of brush compares the effect of larger area wiping, can avoid chalk dust subsidiary in large area wiping process
It the case where wiping on blackboard again, avoiding rubbing uncleanly, directly collects, then focuses on, can focus on
Chalk dust, effectively it can be avoided to be scattering into environment, would not cause the pollution to environment, reduced user and breathe sense
Dye, the chalk dust of collection can recycle, and save resource.
Embodiment two:
Referring to Fig.1-9, a kind of blackboard eraser of dust-proof anti-accumulation, including blackboard eraser frame 1 are provided in blackboard eraser frame 1
Chamber 6 is wiped, wipes and is rotatably connected to driven scrubbing brush 4 and active scrubbing brush 8 on the inner wall of chamber 6, the side of active scrubbing brush 8 is socketed with biography
Send band 5, the downside of blackboard eraser frame 1 offers collecting tank 10, and the downside of collecting tank 10 offers mounting groove 13, in mounting groove 13
It is connected with dust box 12, the first opening is offered on collecting tank 10, the second opening is offered on mounting groove 13;
Wherein, the side of active scrubbing brush 8 is rotatably connected to dead axle, and shaft 7, shaft 7 and active are fixedly connected on dead axle
Clockwork spring is installed between scrubbing brush 8, using dead axle as tie point, the shaft 7 on the upside of dead axle is shorter, and the shaft 7 on the downside of dead axle is longer, but
It is since the upper end of shaft 7 is lighter, lower end is heavier, and the position of centre of gravity of shaft 7 is on the lower side, when user's mobile blackboard wipes frame 1
When movement to the right, there is object inertia to keep original motion state, since the lower end of shaft 7 is compared to upper end weight, turn
Axis 7 is rotated clockwise in inertia force effect lower stress, and shaft 7 can still keep movement after rotating clockwise, at this time
Shaft 7 will be subject to centrifugal forces, and the lower end of shaft 7 will cause shaft 7 with fixed towards the periphery movement in the movement center of circle
Do circular motion clockwise centered on axis, no matter the bob motion that 7 activity of moving in a circle of shaft swings back and forth, in the auxiliary of clockwork spring
It helps under effect, shaft 7 all will drive active scrubbing brush 8 to rotate multiple borders, to which shaft 7 drives 8 turns of active scrubbing brush by dead axle
Dynamic, active scrubbing brush 8 drives entire driven scrubbing brush 4 to rotate by conveyer belt 5, so active scrubbing brush 8 in blackboard eraser frame 1 and from
Movable plate brush 4 when with blackboard direct friction, while driven scrubbing brush 4 and active scrubbing brush 8 also will rotation, realize to letter written with chalk with
The form of brush wipes;
Wherein, the side of driven scrubbing brush 4 is fixedly connected with turntable 2, and universal driving shaft 3, the first opening are rotatably connected on turntable 2
On be rotatably connected to the first unidirectional piece 9, be rotatably connected to the second unidirectional piece 11 in the second opening, slidably connected in collecting tank 10
Slide-bar 14, sliding mouth 15 is further opened on collecting tank 10, and universal driving shaft 3 passes through sliding mouth 15, universal driving shaft 3 one end and cunning far from turntable 2
Axis 14 is rotatablely connected, and the one end of slide-bar 14 far from universal driving shaft 3 is fixedly connected with sliding block 16, and the slewing area of the first unidirectional piece 9 is
It is driven when driven scrubbing brush 4 rotates 0-90 ° under the slewing area horizontal direction of the second unidirectional piece 11 0-90 ° under horizontal direction
Scrubbing brush 4 can drive turntable 2 to rotate synchronously, and the rotation of turntable 2 will drive movement of the universal driving shaft 3 in sliding mouth 15, universal driving shaft 3 to push away
The sliding in collecting tank 10 of dynamic slide-bar 14, when universal driving shaft 3 pushes slide-bar 14 to be moved to the left in collecting tank 10, sliding block 16
The structure of a similar piston is formed, the air on 16 right side of sliding block will be twitched, and air pressure reduces, not due to the second unidirectional piece 11
It can be rotated up, but the first unidirectional piece 9 can rotate down, air pressure is big in wiping chamber 6, is caused downwards to the first unidirectional piece 9
Pressure, to first opening will be opened, wiping chamber 6 in accumulate dust will be inhaled into collecting tank under gas pressure
It is collected in 10, when driving slide-bar 14 to move right after universal driving shaft 3 rotated peak, in the promotion of sliding block 16
Under, the air pressure in collecting tank 10 will increase, and since the first unidirectional piece 9 cannot rotate, the second unidirectional piece 11 can rotate down,
Under gas pressure, the related dust of gas in collecting tank 10 is entered eventually by the second opening in mounting groove 13, by dust
12 centralized collection of box is got up, and chalk dust can be collected adequately so that during wiping back and forth, dust will not be again
It is secondary to fly upward, cause the secondary pollution of environment.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of blackboard eraser of dust-proof anti-accumulation, including blackboard eraser frame (1), which is characterized in that in the blackboard eraser frame (1)
It is provided with wiping chamber (6), driven scrubbing brush (4) and active scrubbing brush (8) are rotatably connected on the inner wall of the wiping chamber (6), it is described
The side of active scrubbing brush (8) is socketed with conveyer belt (5), and collecting tank (10) is offered on the downside of the blackboard eraser frame (1), described
Mounting groove (13) is offered on the downside of collecting tank (10), and dust box (12), the collecting tank are connected in the mounting groove (13)
(10) the first opening is offered on, and the second opening is offered on the mounting groove (13).
2. a kind of blackboard eraser of dust-proof anti-accumulation according to claim 1, which is characterized in that the active scrubbing brush (8)
Side is rotatably connected to dead axle, and shaft (7) is fixedly connected on the dead axle, is pacified between the shaft (7) and active scrubbing brush (8)
Equipped with clockwork spring.
3. a kind of blackboard eraser of dust-proof anti-accumulation according to claim 1, which is characterized in that the driven scrubbing brush (4)
Side is fixedly connected with turntable (2), and universal driving shaft (3) is rotatably connected on the turntable (2), is rotatablely connected in first opening
There is the first unidirectional piece (9), the second unidirectional piece (11) is rotatably connected in second opening, the interior sliding of the collecting tank (10) connects
It is connected to slide-bar (14), sliding mouth (15) is further opened on the collecting tank (10), the universal driving shaft (3) passes through sliding mouth (15), described
The one end of universal driving shaft (3) far from turntable (2) is rotatablely connected with slide-bar (14), the one end of the slide-bar (14) far from universal driving shaft (3)
It is fixedly connected with sliding block (16), the slewing area of the first unidirectional piece (9) is second unidirectional piece 0-90 ° under horizontal direction
(11) 0-90 ° under slewing area horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786951.4A CN108688387B (en) | 2018-07-18 | 2018-07-18 | A kind of blackboard eraser of dust-proof anti-accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786951.4A CN108688387B (en) | 2018-07-18 | 2018-07-18 | A kind of blackboard eraser of dust-proof anti-accumulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108688387A true CN108688387A (en) | 2018-10-23 |
| CN108688387B CN108688387B (en) | 2019-10-11 |
Family
ID=63850704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810786951.4A Active CN108688387B (en) | 2018-07-18 | 2018-07-18 | A kind of blackboard eraser of dust-proof anti-accumulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108688387B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484062A (en) * | 2018-10-26 | 2019-03-19 | 石慧升 | One kind using Dual-side blackboard for electronic engineering teaching |
| CN110303805A (en) * | 2019-07-16 | 2019-10-08 | 吴鹏 | A kind of blackboard eraser of automatic dust absorption |
| CN112590434A (en) * | 2020-12-30 | 2021-04-02 | 周典银 | Mechanical automatic dust-absorbing blackboard eraser |
| CN112606599A (en) * | 2020-12-28 | 2021-04-06 | 姜培文 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
| CN112837586A (en) * | 2021-01-20 | 2021-05-25 | 焦作大学 | Chinese language and literature vocabulary division show shelf |
| CN115446067A (en) * | 2022-09-05 | 2022-12-09 | 抚州市天和硅业有限责任公司 | Processing apparatus of non ferrous metal smelting intermediate product |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200964003Y (en) * | 2006-06-21 | 2007-10-24 | 宋志鹏 | Blackboard eraser |
| US7685672B2 (en) * | 2005-05-18 | 2010-03-30 | Hsi-Hur Lai | Vacuum eraser for blackboards |
| CN201604436U (en) * | 2009-12-14 | 2010-10-13 | 计雯瀚 | Dust removing blackboard eraser |
| CN202293940U (en) * | 2011-07-08 | 2012-07-04 | 杭州市良渚职业高级中学 | Remote-controlled blackboard eraser |
| CN202669318U (en) * | 2012-06-28 | 2013-01-16 | 淮南师范学院 | Eraser |
| CN203805592U (en) * | 2014-04-20 | 2014-09-03 | 彭玉军 | Dust-free blackboard eraser |
| CN205185674U (en) * | 2015-10-31 | 2016-04-27 | 码依热木塔力甫 | Rotation type clockwork spring blackboard eraser |
-
2018
- 2018-07-18 CN CN201810786951.4A patent/CN108688387B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7685672B2 (en) * | 2005-05-18 | 2010-03-30 | Hsi-Hur Lai | Vacuum eraser for blackboards |
| CN200964003Y (en) * | 2006-06-21 | 2007-10-24 | 宋志鹏 | Blackboard eraser |
| CN201604436U (en) * | 2009-12-14 | 2010-10-13 | 计雯瀚 | Dust removing blackboard eraser |
| CN202293940U (en) * | 2011-07-08 | 2012-07-04 | 杭州市良渚职业高级中学 | Remote-controlled blackboard eraser |
| CN202669318U (en) * | 2012-06-28 | 2013-01-16 | 淮南师范学院 | Eraser |
| CN203805592U (en) * | 2014-04-20 | 2014-09-03 | 彭玉军 | Dust-free blackboard eraser |
| CN205185674U (en) * | 2015-10-31 | 2016-04-27 | 码依热木塔力甫 | Rotation type clockwork spring blackboard eraser |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484062A (en) * | 2018-10-26 | 2019-03-19 | 石慧升 | One kind using Dual-side blackboard for electronic engineering teaching |
| CN110303805A (en) * | 2019-07-16 | 2019-10-08 | 吴鹏 | A kind of blackboard eraser of automatic dust absorption |
| CN110303805B (en) * | 2019-07-16 | 2021-04-13 | 温州斯酷睿机械科技有限公司 | Blackboard eraser capable of automatically absorbing dust |
| CN112606599A (en) * | 2020-12-28 | 2021-04-06 | 姜培文 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
| CN112606599B (en) * | 2020-12-28 | 2022-07-22 | 山东金太阳教育集团有限公司 | Dust absorption type blackboard eraser is used in teaching based on centrifugal force |
| CN112590434A (en) * | 2020-12-30 | 2021-04-02 | 周典银 | Mechanical automatic dust-absorbing blackboard eraser |
| CN112837586A (en) * | 2021-01-20 | 2021-05-25 | 焦作大学 | Chinese language and literature vocabulary division show shelf |
| CN112837586B (en) * | 2021-01-20 | 2022-12-13 | 焦作大学 | Chinese language and literature vocabulary division show shelf |
| CN115446067A (en) * | 2022-09-05 | 2022-12-09 | 抚州市天和硅业有限责任公司 | Processing apparatus of non ferrous metal smelting intermediate product |
| CN115446067B (en) * | 2022-09-05 | 2023-06-23 | 抚州市天和硅业有限责任公司 | Treatment device for nonferrous metal smelting intermediate products |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108688387B (en) | 2019-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108688387B (en) | A kind of blackboard eraser of dust-proof anti-accumulation | |
| CN108437667A (en) | A kind of multifunctional blackboard eraser dust-extraction unit | |
| CN110406294B (en) | Clean blackboard eraser with chalk dust adsorption function | |
| CN109124498A (en) | A kind of crash-proof sweeping robot | |
| CN110303805A (en) | A kind of blackboard eraser of automatic dust absorption | |
| CN208641672U (en) | A kind of callisthenics soft training auxiliary rod | |
| CN214648529U (en) | Limiting structure for preventing steering wheel from being damaged when rotating to maximum angle | |
| CN105904890B (en) | A kind of dust-removing blackboard eraser | |
| CN204263776U (en) | A kind of louvered blackboard of energy Automatic clearance | |
| CN210889913U (en) | Intelligent integrated actuator | |
| CN2936780Y (en) | Built-in dust collecting rolling blackboard | |
| CN203792987U (en) | Simple dust-removing blackboard eraser | |
| CN208896718U (en) | A kind of quick blackboard cleaning device of education | |
| CN201217342Y (en) | Environment-friendly non-dust self-cleaning blackboard eraser | |
| CN2928535Y (en) | Dust-proof blackboard eraser | |
| CN211843875U (en) | Dust-collecting electric blackboard eraser | |
| CN205311185U (en) | Dust -free blackboard eraser | |
| CN216220611U (en) | Podium for english education | |
| CN209649870U (en) | A kind of self-cleaning blackboard of teaching of senior high school | |
| CN208356103U (en) | A kind of children's early education robot | |
| CN208610748U (en) | A kind of remote controlled vacuum cleaner | |
| CN219867008U (en) | Teaching touch screen mounting structure | |
| CN210189210U (en) | Protective cover for drilling machine | |
| CN208544023U (en) | A kind of novel blackboard eraser | |
| CN209938145U (en) | Mathematics drawing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190916 Address after: 325300 Nankengyuan Village, Xikeng She Town, Wencheng County, Wenzhou City, Zhejiang Province Applicant after: Zhou Wu Xian Address before: No. 253, Xuefu Road, Wuhua District, Kunming, Yunnan Applicant before: Zhang Zhi Hua |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |