CN1502481A - Electric chalk eraser - Google Patents
Electric chalk eraser Download PDFInfo
- Publication number
- CN1502481A CN1502481A CNA031045294A CN03104529A CN1502481A CN 1502481 A CN1502481 A CN 1502481A CN A031045294 A CNA031045294 A CN A031045294A CN 03104529 A CN03104529 A CN 03104529A CN 1502481 A CN1502481 A CN 1502481A
- Authority
- CN
- China
- Prior art keywords
- dust
- chalk
- chalk dust
- eraser
- upper shell
- 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.)
- Pending
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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
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The present invention relates to an electromotive chalk eraser which can prevent harmful influence of the chalk dust generated while erasing the blackboard on students and teachers. The electromotive chalk eraser of the present invention can easily and simply remove the adsorbed chalk dust therefrom to reduce the inconveniences caused in the course of re-using the chalk eraser, and it can be repeatedly used for a long time without being worn out, thus eliminating costs for exchanging old chalk erasers for new ones.
Description
Technical field
The present invention relates to a kind of Electric chalk eraser of removing chalk dust on the blackboard, more particularly, relate to the Electric chalk eraser of a kind of chalk dust that produces can prevent to erase the board the time student and teacher's adverse effect.
Background technology
Blackboard generally is a kind of flat board of smooth, the hard and black of writing in the above with chalk.Teacher is by writing the student who teaches them with chalk on blackboard, and they often must wipe their written contents with chalkboard eraser when giving lessons.
Habitual chalkboard eraser has a kind of textile material cloth that wherein comprises the cotton filler in its bottom, also has the ground paper that one deck adheres to textile material cloth with the chalk dust on the removing blackboard and at its top.
Because above-mentioned habitual chalkboard eraser is in light weight and can the qurer manufacturing, thereby in school and other educational institution, be extensive use of for a long time always.But its shortcoming is that the chalk dust that produces flies upward in the air, and may cause health problem to student and teacher when erasing the board.
More particularly, chalk dust can stimulate schneiderian membrane and irritated or responsive people is extremely harmful to dust for those, and if chalk dust and air together be inhaled into, can cause breathing problem.
In addition, in order to re-use chalkboard eraser after erasing the board, often need to remove attachment removal and be accumulated in chalk dust on the cloth of chalkboard eraser, this has caused very big trouble to the user, and also may cause adverse effect to user's respiratory apparatus and environment.
In addition, if chalkboard eraser has been used for a long time repeatedly, the textile material cloth of its bottom and the ground paper at top are worn, thereby the efficient that erases the board significantly reduces.
Summary of the invention
An object of the present invention is to provide a kind of chalk dust that can adsorb on the blackboard, so that fly upward the Electric chalk eraser of airborne chalk dust to academics and students's adverse effect minimum.
Another object of the present invention is will provide a kind of can simply easily remove the chalk dust of absorption, to reduce to re-use the Electric chalk eraser of the trouble that causes in the process of chalkboard eraser.
A further object of the present invention be to provide a kind of can prolonged and repeated use and do not wear and tear, thereby can save the Electric chalk eraser that changes the expense of old chalkboard eraser with new chalkboard eraser.
In order to achieve the above object, Electric chalk eraser according to the present invention comprises:
A upper shell that has a console switch in its outside and have a power supply within it in the portion space;
One is connected with power supply with the suction motor according to the console switch rotation;
One axially is connected to the suction motor so that with sucking the impeller that motor rotates;
A side that removably is installed in upper shell, and have a chalk dust inlet and a dust arrester that holds the dust storage chamber of chalk dust in its underpart;
A check-valves that is arranged between chalk dust inlet and the dust storage chamber;
One combines with upper shell, and is included in a container in its inner space, an opening and a lower house that is used for chalk dust is discharged into the outlet of dust arrester at an upper portion thereof at the absorption chalk dust of its bottom;
One is installed in the container with driven drive motors;
An adhesive attachment means that is installed in the two bottom sides of lower house; With
A dust adsorption element that is connected to drive motors with the chalk dust on the absorption blackboard, the part of the circumference of dust adsorption element is projected into the opening outside of absorption chalk dust.
If connect according to chalkboard eraser of the present invention by the console switch that is arranged on upper shell, and be applied on the blackboard of chalk dust contamination, the adhesive attachment means of chalkboard eraser adheres on the blackboard, and adsorption element rotation absorption chalk dust.
Then, be connected to the impeller that sucks motor and make the chalk dust of absorption move to the outlet of the discharging chalk dust of lower house, and chalk dust is provided to dust arrester by the chalk dust inlet.If dust arrester has been full of a certain amount of chalk dust, can easily it be taken out from upper shell so, and chalk dust is discharged to outside the chalkboard eraser.
Description of drawings
Show embodiments of the invention for further understanding accompanying drawing that the present invention provides and this specification of combination formation part, and be used from explanation principle of the present invention with specification one, wherein:
Fig. 1 is the profile according to Electric chalk eraser of the present invention;
Fig. 2 shows the partial cross-sectional side-elevation view of Fig. 1 that the dust adsorption element is connected to the state of drive motors; With
Fig. 3 is the plane according to Electric chalk eraser of the present invention of partial sectional view that shows the upper shell of chalkboard eraser.
The specific embodiment
Describe the present invention in detail below with reference to accompanying drawing.
Electric chalk eraser according to the present invention comprises that one has one at the console switch (11) in its outside and one upper shell (10) of the power supply (13) in portion space (12) within it;
One is connected with power supply (13) with the suction motor (M) according to console switch (11) rotation;
One axially is connected in suction motor (M) so that with sucking the impeller (14) that motor (M) rotates;
One removably is installed in a side of upper shell (10) and has chalk dust inlet (22) and the dust arrester (20) that wherein holds the dust storage chamber (21) of chalk dust in its underpart;
A check-valves (22a) that is arranged between chalk dust inlet (22) and the dust storage chamber (21);
One is connected with upper shell (10), and comprises container (31), an opening that is used to adsorb chalk dust (32) and the lower house (30) that is used for chalk dust is discharged to the outlet (33) of dust arrester (20) at an upper portion thereof in its bottom in the portion space within it;
One is installed in the container (31) with driven drive motors (M ');
An adhesive attachment means (34) that is installed in the two bottom sides of lower house (30); With
A dust adsorption element (40) that is connected to drive motors (M ') with the chalk dust on the absorption blackboard, the part of the circumference of dust adsorption element (40) is projected into the outside of the opening (32) of absorption chalk dust.
Fig. 1 is the cutaway view of Electric chalk eraser (1), and wherein dust adsorption element (40) is arranged in the lower house (30), and provides impeller (14) in upper shell (10), so that the chalk dust of dust adsorption element (40) absorption is provided to dust arrester (20).In addition, suck motor (M) and be installed in the upper shell (10), with drives impeller (14) and dust adsorption element (40) rotation.
Fig. 2 shows dust adsorption element (40) is connected to drive motors (M '), and drive motors (M ') drives the partial cross-sectional side-elevation view of Electric chalk eraser of the present invention (1) of the state of rotation dust adsorption element (40).
Fig. 3 is the plane that shows the global shape of Electric chalk eraser (1) and show upper shell (10) broken section of chalkboard eraser, wherein console switch (11) is arranged on a corner at the top of upper shell (10), and the suction motor (M) of impeller (14) and wheel rotor (14) is arranged in the upper shell (10).Lower house (30) is arranged on the below of upper shell (10) and corner in top that a driving switch (36) is arranged on lower house (30), with switch dust adsorption element (40).
As shown in Fig. 1 and 3, inner space (12) are formed in the upper shell (10), and power supply (13) is arranged in the inner space (12), to produce electric power.
As shown in fig. 1, power supply (13) comprises that battery is to produce electric power.Except battery, electric power also can provide from the outside by electric wire.
That is to say,, can provide electric power to chalkboard eraser by being wired to terminal if connect terminal arrangement on the wall of school or educational institution.On the other hand, if the connection terminal is not provided, if or use chalkboard eraser temporarily, can be assemblied in upper shell (10) to battery as power supply (13) so.
In a side of power supply (13), suction motor (M) is set is connected with power supply (13), so that it can rotate according to the ON/OFF operation of console switch (11), and there is a impeller (14) axially to be connected to suction motor (M) with fan type of a plurality of fan wings.
In addition, in the part of upper shell (10), provide the dust arrester that is detachably connected to upper shell (10) (20), and it comprises from the chalk dust inlet (22) of lower house (30) input chalk dust and holds the dust storage chamber (21) of the chalk dust of collecting from lower house (30).
Check-valves (22a) is arranged between chalk dust inlet (22) and the dust storage chamber (21), so that the dust of collecting from chalk dust inlet (22) is provided to dust storage chamber (21).
In order to prevent that the dust that is collected in dust storage chamber (21) is provided to impeller (14), be provided with one between the impeller (14) in dust storage chamber (21) and dust storage chamber (21) and have the filter (23) of having fixed a kind of filtering material (24), between filter (23) and impeller (14), provide a hole (15) as the passage of discharging air from dust arrester (20).
Therefore, the filtering material (24) that is attached to filter (23) has stopped the chalk dust that is collected in the dust arrester (20) and other foreign material, and has only the pure air of filtration to be discharged to the inner space (12) of upper shell (10).
Upper shell (10) is connected with lower house (30).Lower house (30) comprises the container (31) of a preliminary dimension, in the opening (32) of absorption chalk dust of its bottom and the outlet (33) that is used for chalk dust is discharged to dust arrester (20) at an upper portion thereof.
In addition, be provided with adhesive attachment means (34) in the two bottom sides of lower house (30), so that chalkboard eraser (1) is adhered to blackboard.
Adhesive attachment means can be made by various materials.Adhesive attachment means is the textile material cloth such as flannel preferably.
As shown in Figure 2, upper shell (10) and being connected of lower house (30) are two bottom sides by being formed on upper shell (10) and bandy connector (16) and be formed on lower house (30) both sides, top and curve inwardly so that realize with connector (35) engagement of the lower house (30) of connector (16) engagement of upper shell (10).
Lower house (30) can form as one with the container (31) in its inner space, maybe can be divided into a upper body and a lower body, thereby can form container (31) separately in their inner space.
In the container (31) of lower house (30), be provided with drive motors (M '), so that combine rotation, and it is connected to dust adsorption element (40), with absorption with wipe chalk dust on the blackboard with power supply (13).
Dust adsorption element (40) comprises a roll body (40a) in the central, with a brush body (40b) around roll body (40a), and be connected to drive motors (M ') by a power transmission component (44) that comprises belt and chain, so as to make dust adsorption element (40) can with the identical direction rotation of drive motors (M ').
More particularly, be provided with the end component (42) that has driving shaft (41) in the central, on driving shaft (41), be provided with a belt pulley (43) at the two ends of roll body (40a).Also be provided with another belt pulley (43) on the drive motors (M '), and power transmission component (44) is arranged on the belt pulley.
In addition, by flange (46) end component (42) is fixed in the lower house (30).Flange shown in Fig. 1 right side (46) flexible parts (45) around it.A plurality of bearings (47) are arranged between flange (46) and the driving shaft (41), so as to make dust adsorption element (40) can with together rotation of drive motors (M ').
The drive motors of driving dust adsorption element (40) (M ') can be by console switch (11) control that is arranged in the upper shell (10).But, preferably in lower house (30), be provided with one independently driving switch (36) control drive motors (M ').
The driving switch (36) that the jockey (37) that comprises nuts and bolt will be controlled drive motors (M ') is connected to the pedestal (36a) of upper plate one end of lower house (30).Pedestal (36a) combines with power supply (13).According to the chalk dust capacity of collecting from blackboard, can control respectively and suck motor (M) and drive motors (M ').Therefore, can more effectively be used to electric power from power supply (13).
If a large amount of chalk dusts is arranged on the blackboard, can connect the console switch (11) in the upper shell (10) so, if having only a spot of chalk dust on the blackboard, can only connect driving switch (36) so, to wipe chalk dust.That is to say, can use operation and driving switch (11 and 36) when needed selectively, thereby can rotate suction motor (M) and drive motors (M ') by connecting switch (11 and 36) selectively.By this way, can save electric power effectively.
If the dust adsorption element (40) that rotates is touched the blackboard surface, the adhesive attachment means (34) that is arranged on lower house (30) two bottom sides adheres to blackboard tightly with chalkboard eraser, remove chalk dust from the blackboard surface, and adsorbed by the brush body of dust adsorption element (40) (40b).
The outlet (33) of the chalk dust process discharging chalk dust of turning handle brush body (40b) absorption of impeller (14) is carried to the inlet (22) of chalk dust, and it is provided to dust arrester (20).
In the absorption and course of conveying of chalk dust, the check-valves (22a) that is installed in chalk dust inlet (22) can prevent the backflow of chalk dust.
Check-valves (22a) is made by elastic synthetic resin and/or elastic caoutchouc.Under normal condition, as shown in Figure 1, check-valves (22a) cuts out chalk dust inlet (22).But if by making operation switch (11) drives impeller (14), so, shown in chain-dotted line among Fig. 1, check-valves (22a) is opened, and therefore chalk dust is transported in the dust storage chamber (21).If stop impeller (14) by turning off console switch (11), so, check-valves (22a) cuts out chalk dust inlet (22).
If dust storage chamber has been collected a certain amount of chalk dust in (21), can take out dust arrester (20) from upper shell (10) so, and can pour the chalk dust of collecting in the dust storage chamber (21) into dustbin, or the like.Then, dust arrester (20) is installed to an end of the upper shell (10) of chalkboard eraser of the present invention (1) again, and can re-uses.
Therefore, Electric chalk eraser of the present invention (1) can provide educational environment comfortable and cleaning for student and teacher.
Above-mentioned following advantage and the effect of the invention provides:
At first, the present invention can prevent that chalk dust from flying upward in the air, thereby can reduce the adverse effect to student and teacher as far as possible.
Secondly, owing to dust arrester can easily disassemble from Electric chalk eraser of the present invention, and can handle and remove the chalk dust of collection simply, thereby can reduce to re-use the inconvenience that brings in the chalkboard eraser process significantly.
The 3rd, suck motor and drive motors owing to can control independently, thereby can effectively utilize and save electric power according to chalk dust capacity.
At last, Electric chalk eraser of the present invention can use repeatedly for a long time and can not wear and tear, thereby has saved the expense of changing old chalkboard eraser with new chalkboard eraser.
Claims (2)
1. Electric chalk eraser comprises:
One has one at its outside console switch and one upper shell of the power supply in the portion space within it;
One is connected with power supply with the suction motor according to the console switch rotation;
One axially is connected to the suction motor, with the impeller that rotates with the suction motor;
One is removably mounted on a side of upper shell and has a chalk dust inlet and a dust arrester that holds the dust storage chamber of chalk dust in its underpart;
A check-valves that is arranged between chalk dust inlet and the dust storage chamber;
A lower house that is connected with upper shell comprises the container in the portion space, an opening and an outlet that is used for chalk dust is discharged into dust arrester at an upper portion thereof at the absorption chalk dust of its bottom within it;
One install in case in container driven drive motors;
An adhesive attachment means that is installed in the two bottom sides of lower house; With
A dust adsorption element that is connected to drive motors with chalk dust on the absorption blackboard, the part of the circumference of dust adsorption element is projected into the outside of the opening of absorption chalk dust.
2. Electric chalk eraser according to claim 1 is characterized in that providing a filter in dust arrester, be provided to impeller with the chalk dust that prevents to collect in the dust storage chamber.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020020071986A KR20040043619A (en) | 2002-11-19 | 2002-11-19 | Electromotion Board Eraser |
| KR71986/2002 | 2002-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1502481A true CN1502481A (en) | 2004-06-09 |
Family
ID=32322253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031045294A Pending CN1502481A (en) | 2002-11-19 | 2003-02-14 | Electric chalk eraser |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20040043619A (en) |
| CN (1) | CN1502481A (en) |
| AU (1) | AU2003302032A1 (en) |
| WO (1) | WO2004045782A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390203A (en) * | 2011-09-23 | 2012-03-28 | 山东理工大学 | Automatic charging dust-collection blackboard eraser |
| CN107774601A (en) * | 2017-12-01 | 2018-03-09 | 滁州学院 | A kind of blackboard eraser dust-free clean device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100735055B1 (en) * | 2006-06-08 | 2007-07-06 | 서금윤 | An electromotive chalk eraser enabling remote control |
| CN105150728A (en) * | 2015-10-06 | 2015-12-16 | 刘书廷 | Novel blackboard eraser |
| CN108065876A (en) * | 2016-11-13 | 2018-05-25 | 青岛世纪云帆实业有限公司 | Electric dust absorption sweeps up dust whisk |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB935807A (en) * | 1962-05-02 | 1963-09-04 | Kwan Shu Min | A combined eraser and suction cleaner for blackboards |
| JPS5418331A (en) * | 1977-07-09 | 1979-02-10 | Saito Takeshi | Blackboard wiper with dust collector |
| GB2108434A (en) * | 1981-10-23 | 1983-05-18 | Hua Yu Wen | Electric blackboard eraser |
| JP2617275B2 (en) * | 1994-05-19 | 1997-06-04 | 営 筒井 | Blackboard eraser |
| JP2810848B2 (en) * | 1994-06-27 | 1998-10-15 | 政美 本間 | Erasing device |
| KR200256716Y1 (en) * | 2001-08-30 | 2001-12-24 | 홍기선 | Rechargeable blackboard eraser |
-
2002
- 2002-11-19 KR KR1020020071986A patent/KR20040043619A/en active IP Right Grant
-
2003
- 2003-01-16 AU AU2003302032A patent/AU2003302032A1/en not_active Abandoned
- 2003-01-16 WO PCT/KR2003/000097 patent/WO2004045782A2/en not_active Application Discontinuation
- 2003-02-14 CN CNA031045294A patent/CN1502481A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390203A (en) * | 2011-09-23 | 2012-03-28 | 山东理工大学 | Automatic charging dust-collection blackboard eraser |
| CN107774601A (en) * | 2017-12-01 | 2018-03-09 | 滁州学院 | A kind of blackboard eraser dust-free clean device |
| CN107774601B (en) * | 2017-12-01 | 2023-12-15 | 滁州学院 | Dust-free cleaning device for blackboard eraser |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003302032A8 (en) | 2004-06-15 |
| WO2004045782A3 (en) | 2005-03-31 |
| AU2003302032A1 (en) | 2004-06-15 |
| WO2004045782A2 (en) | 2004-06-03 |
| KR20040043619A (en) | 2004-05-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |