CN201077291Y - Dust-proof blackboard eraser - Google Patents
Dust-proof blackboard eraser Download PDFInfo
- Publication number
- CN201077291Y CN201077291Y CNU2007200429722U CN200720042972U CN201077291Y CN 201077291 Y CN201077291 Y CN 201077291Y CN U2007200429722 U CNU2007200429722 U CN U2007200429722U CN 200720042972 U CN200720042972 U CN 200720042972U CN 201077291 Y CN201077291 Y CN 201077291Y
- Authority
- CN
- China
- Prior art keywords
- dust
- cinder catcher
- blackboard
- edge
- catch
- 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
Links
Images
Landscapes
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
The utility model discloses a dust-proof blackboard eraser, which is characterized in that: a casing, an inner buckle frame and an outer frame form a plurality of dust-collecting cavities communicated each other; a dust blocking plate is arranged in an edge groove of an upper dust-collecting cavity; both the upper parts for the edges of the left and the right dust-collecting cavities are buckled inwardly by 30 to 60 degrees; an elastic baffle is arranged in the edge groove; a dust blocking plate is arranged in the edge groove buckled inwardly and upward by 30 to 60 degrees at the lower dust-collecting cavity; 3 to 6 projecting rods toward the blackboard are evenly distributed at the back part of the baffles at both sides according to the interval of 2 to 4 cm; the edge height for positioned dust blocking plate and the baffles is in conformity with the height of dust brushing surface for a felt brush; the projecting rod is vertically pointed to the blackboard and is higher than the dust-brushing surface of the felt by 2 to 5 mm. The utility model uses special cover to control and collect chalk dust and position adjusting of the baffle can be realized using friction function between soft projecting rod and the blackboard. The utility model has the advantages of dust proof, dust removing, economy and practicality under the condition of not changing use habit and not increasing too much manufacturing cost.
Description
Technical field:
The utility model belongs to the blackboard eraser technical field, particularly a kind of dust-proof blackboard eraser.
Background technology:
Existing generally using simply with the fixing blackboard eraser of felt hair of housing; chalk dust under wiping when erasing the board is being caught up with; owing to do not take any restriction and safeguard measure; chalk dust drop and perturbation process in play ash; fly upward and be inhaled into human body with air, influence teachers and students' health by breathing.Though reported the blackboard eraser that carries out dust suction by modes such as electric dust absorptions now, but must provide enough dust suction power during owing to use, need power supply, and filtration facility need be set, and often easier obstruction during good filtration effect, its structure more complicated, cost of manufacture are higher; And use also needs higher electrical source consumption cost etc., causes being difficult to promoting the use of in that school is actual.
The utility model content:
The utility model proposes a kind of dust-proof blackboard eraser, utilize special outer cover to control and collect chalk dust, to overcome the above-mentioned shortcoming of existing blackboard eraser.
The utility model dust-proof blackboard eraser comprises housing 1 and is fixed on the felt woollen brush 3 in the button frame 2 within the housing; It is characterized in that: surround left side cinder catcher 9, right side cinder catcher 10 and top cinder catcher 11, the bottom cinder catcher 12 that is interconnected by housing 1, interior button frame 2 and outer rim 4; Be located in the draw-in groove 5 at top cinder catcher 11 edges and be vertically installed with dust retaining piece 6; 30 °～60 ° angles of all interior button in the top at left and right cinder catcher edge, be located to install respectively in the draw-in groove 5 at its edge and have certain flexible catch 8 of scraping, the back that this and arranged on left and right sides is scraped catch 8 is evenly distributed with 3～6 projection rods 13 towards blackboard by the interval of 2-4cm; The edge of 30 °～60 ° of angles of upwards interior button of bottom cinder catcher 12 is equipped with dust retaining piece 7 in its draw-in groove 5; Make upper and lower dust retaining piece 6,7 and the left and right edge height of scraping catch 8 behind the location consistent with the brush dust face height of felt woollen brush 3, projection rod 13 is vertical to be pointed to blackboards and makes it be higher than the brush dust face 2～5mm of felt hair.
Top cinder catcher 11 can stay less space so that stay bigger space for bottom cinder catcher 12; The bottom of bottom cinder catcher 12 has the ash disposal mouth, seals up with easy-to-dismount bonnet 14.
Also can scrape in the catch 8 along inserting stalloy or thin plastic hard plate in the protruding excellent orientation, scrape the grey effect of ash retaining with what catch 8 was scraped in increase left and right.
When using the utility model dust-proof blackboard eraser to erase the board, the support of scraping limit necessarily flexible because of being subjected to having (rubber or rubber and plastic) projection rod of scraping catch of direction of motion front portion is left the blackboard plane and is reserved the slit, after chalk dust is wiped by blackboard wiping carpet hair, be retained in the cinder catcher, and finally be pooled in the cinder catcher of bottom by the passage that is interconnected; And the frictional force between Bian Zeyin projection rod and the blackboard of scraping of scraping catch at its direction of motion rear portion makes protruding rod be subjected to tractive and holds up, make it be close to blackboard, can limit dust like this and leak and play the ash effect of scraping, remove the dust that is attached on the blackboard, and make it to stay in the cinder catcher; The cinder catcher dust retaining piece that is located at the blackboard eraser bottom makes chalk dust enter cinder catcher and in being collected in, removes so that concentrate.Certain flexible protruding rod that has that the utility model dust-proof blackboard eraser is set has important effect, it can utilize and blackboard between the frictional force effect realize scraping the adjusting of catch position.
The utility model blackboard eraser is owing to adopt the design of unique cover structure formula cinder catcher, and particularly the design of scraping catch of band projection rod makes its dustproof effect very obvious.Its advantage is not change people's use habit and does not increase under the situation of too many manufacturing cost, has splendid dedust effect, and is economical and practical.
Description of drawings:
Fig. 1 is the structural representation of the utility model dust-proof blackboard eraser.
Fig. 2 is the longitudinal profile schematic diagram of dust-proof blackboard eraser;
Fig. 3 is its horizontal section schematic diagram.
The specific embodiment:
Embodiment 1:
The structure of present embodiment dust-proof blackboard eraser as shown in Figure 1, Fig. 2 is its longitudinal profile schematic diagram; Fig. 3 is its horizontal section schematic diagram.The external size of blackboard eraser is comparatively comfortable being advisable when holding mainly, can mainly be adult or children or child at the user, adjusts the series of products of design different size size according to the size of the hand of main use object.Adopting long 170mm * wide 90mm * high 15mm with housing 1 external size in the present embodiment is that example describes.Felt woollen brush 3 within the present embodiment middle shell in the button frame 2 is of a size of long 130mm * wide 50mm * high 7mm, and being installed in highly is in the interior button frame 2 of 3～4mm.The edge thickness of housing 1 outer rim 4 is 4～5mm, so that leave the draw-in groove 5 of the dark 3～4mm of wide 2mm on the edge, is used to install having certain flexible dust retaining piece 6,7 and scraping catch 8 with rubber or rubber and plastic making; Surround left side cinder catcher 9, right side cinder catcher 10 and top cinder catcher 11, the bottom cinder catcher 12 that is interconnected by housing 1, interior button frame 2 and outer rim 4; The width of both sides cinder catcher is 14～16mm in the present embodiment, and the width of top cinder catcher 11 is 4～6mm, and the width of bottom cinder catcher 12 is 24～26mm, is vertically installed with dust retaining piece 6 in the top cinder catcher 11 edge draw-in grooves 5; 30 °～60 ° angles of all interior button in the top at left and right cinder catcher edge, its edge has draw-in groove 5, install respectively in the draw-in groove and have certain flexible catch 8 of scraping, the back that this and arranged on left and right sides is scraped catch 8 is evenly distributed with 3～6 projection rods 13 towards blackboard by the interval of 2-4cm; The edge of 30 °～60 ° of angles of upwards interior button of bottom cinder catcher 12 is equipped with dust retaining piece 7 in its draw-in groove 5; Bottom cinder catcher 12 the bottom have the ash disposal mouth, seal up with easy-to-dismount bonnet 14.Make upper and lower dust retaining piece 6,7 and the left and right edge height of scraping catch 8 behind the location consistent with the brush dust face height of felt woollen brush 3, the thickness that felt woollen brush 3 is installed the comparable ordinary blackboard eraser of thickness of the whole blackboard eraser in back increases by 1～5mm; Projection rod 13 vertical sensing blackboards and its are higher than the brush dust face 2～5mm of felt hair, so that the frictional force effect between its utilization and the blackboard realizes scraping the regulating action of catch position.Should before dust retaining piece 6, back dust retaining piece 7 and the both sides width of scraping catch 8 can determine that the back determine that in conjunction with the gradient and the degree of depth of draw-in groove 5 their length is also determined according to the needs of integral body in the size of housing 1, felt woollen brush 3.
Also can scrape in the catch 8 along inserting stalloy or thin plastic hard plate in the protruding excellent orientation, scrape the grey effect of ash retaining with what catch 8 was scraped in increase left and right.
When using the utility model dust-proof blackboard eraser to erase the board, the limit of scraping of scraping catch that is in direction of motion front portion is left the blackboard plane because of the support that is subjected to having certain flexible rubber or rubber and plastic projection rod and is reserved the slit, after chalk dust is wiped by the blackboard eraser felt woollen brush, be retained in the cinder catcher, and finally be pooled in the cinder catcher of bottom by the passage that is interconnected; Its direction of motion rear portion scrape catch scrape the limit then by the friction between protruding rod and the blackboard, tractive and hold up, make the limit of scraping of scraping catch be close to the blackboard surface, can limit dust like this and leak and play the ash effect of scraping, remove and be attached to the dust on blackboard surface, and make it to stay in the cinder catcher; Be located at blackboard eraser the bottom cinder catcher and the bonnet of (or claiming the rear portion), be convenient to make chalk dust to enter and be collected in the cinder catcher, concentrate removing.
The utility model blackboard eraser is owing to adopt the design of unique cover structure formula cinder catcher, and particularly band projection rod scrapes The design of catch makes its dust-proof effect very obvious. Its advantage is not change people's use habit and does not increase too many In the situation of manufacturing cost, still have splendid dedust effect, have very strong practicality.
Claims (3)
1. a dust-proof blackboard eraser comprises housing (1) and is fixed on the felt woollen brush of detaining within the housing in the frame (2) (3); It is characterized in that: surround left side cinder catcher (9), right side cinder catcher (10) and top cinder catcher (11), the bottom cinder catcher (12) that is interconnected by housing (1), interior button frame (2) and outer rim (4); Be located in the draw-in groove (5) at top cinder catcher (11) edge and be vertically installed with dust retaining piece (6); 30 °～60 ° angles of all interior button in the top at left and right cinder catcher edge, be located to install respectively in the draw-in groove (5) at its edge and have certain flexible catch (8) of scraping, the back that this and arranged on left and right sides is scraped catch (8) is evenly distributed with 3～6 projection rods (13) towards blackboard by the interval of 2-4cm; The edge of 30 °～60 ° of angles of upwards interior button of bottom cinder catcher (12) is equipped with dust retaining piece (7) in its draw-in groove; Make upper and lower dust retaining piece (6) behind the location, (7) and the left and right edge height of scraping catch (8) consistent with the brush dust face height of felt woollen brush (3), projection rod (13) vertically points to blackboard and makes it be higher than the brush dust face 2～5mm of felt woollen brush (3).
2. dust-proof blackboard eraser as claimed in claim 1 is characterised in that its top cinder catcher (11) stays less space, and bottom cinder catcher (12) stays bigger space; The bottom of bottom cinder catcher (12) has the ash disposal mouth, seals up with easy-to-dismount bonnet (14).
3. dust-proof blackboard eraser as claimed in claim 1 is characterised in that left and right and scrapes in the catch (8) along inserting stalloy or thin plastic hard plate in the protruding excellent orientation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200429722U CN201077291Y (en) | 2007-08-17 | 2007-08-17 | Dust-proof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200429722U CN201077291Y (en) | 2007-08-17 | 2007-08-17 | Dust-proof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201077291Y true CN201077291Y (en) | 2008-06-25 |
Family
ID=39569346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200429722U Expired - Fee Related CN201077291Y (en) | 2007-08-17 | 2007-08-17 | Dust-proof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201077291Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204022A (en) * | 2013-04-12 | 2013-07-17 | 杨义玲 | Dust-free blackboard eraser |
| CN103465698A (en) * | 2013-08-28 | 2013-12-25 | 陈浩 | Dust collecting blackboard eraser and application method thereof |
-
2007
- 2007-08-17 CN CNU2007200429722U patent/CN201077291Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204022A (en) * | 2013-04-12 | 2013-07-17 | 杨义玲 | Dust-free blackboard eraser |
| CN103465698A (en) * | 2013-08-28 | 2013-12-25 | 陈浩 | Dust collecting blackboard eraser and application method thereof |
| CN103465698B (en) * | 2013-08-28 | 2015-11-18 | 陈浩 | Dust-removing blackboard eraser and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201077291Y (en) | Dust-proof blackboard eraser | |
| CN203651270U (en) | Multifunctional automatic dust-free blackboard | |
| CN201291694Y (en) | Environment protection black board eraser | |
| CN207565209U (en) | One kind can positioning full-automatic dust absorption blackboard eraser | |
| CN202703044U (en) | Dust-absorption type power-driven blackboard eraser | |
| CN208615592U (en) | Small intelligent dust-free black board eraser | |
| CN205112786U (en) | Multifunctional blackboard eraser | |
| CN204077184U (en) | Novel blackboard eraser | |
| CN203046648U (en) | Dustproof blackboard eraser | |
| CN204801344U (en) | Teaching is with inhaling grey chalkboard eraser | |
| CN200992089Y (en) | Dust-collecting pen eraser | |
| CN205705888U (en) | The greyish black blackboard eraser of chargeable suction | |
| CN204296313U (en) | Inhale grey chalkboard eraser | |
| CN204870245U (en) | Teaching is with chalkboard eraser that can inhale chalk dust automatically | |
| CN202242638U (en) | Water plate dust collecting blackboard eraser | |
| CN205498425U (en) | Teaching is with environmental protection arc blackboard | |
| CN101417575B (en) | Environment-friendly dust-proof eraser | |
| CN210941106U (en) | Miniature electric dust-collecting blackboard eraser | |
| CN202080012U (en) | Dust suction blackboard eraser | |
| CN201151305Y (en) | Cleaning brush for blackboard | |
| CN201849206U (en) | Dust-collection blackboard eraser | |
| CN201970738U (en) | Automatic dust suction blackboard eraser | |
| CN202826892U (en) | Dustproof blackboard eraser | |
| CN200995568Y (en) | Dust-collecting blackboard sponge | |
| CN201012599Y (en) | Blackboard eraser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20120817 |