CN204506278U - A kind of dust absorption blackboard eraser - Google Patents
A kind of dust absorption blackboard eraser Download PDFInfo
- Publication number
- CN204506278U CN204506278U CN201520188135.5U CN201520188135U CN204506278U CN 204506278 U CN204506278 U CN 204506278U CN 201520188135 U CN201520188135 U CN 201520188135U CN 204506278 U CN204506278 U CN 204506278U
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- CN
- China
- Prior art keywords
- laying dust
- blackboard eraser
- dust box
- vacuum chamber
- substrate
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- 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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Abstract
The utility model discloses a kind of dust absorption blackboard eraser.It comprises blackboard eraser, substrate, vacuum chamber and laying dust box, and described blackboard eraser evenly has Duo Tiaolei road along its length; Described substrate is fixed on the back side of blackboard eraser, and on substrate, multiple diameter dust absorption passage identical with the width in rib road is evenly opened along the thickness direction of substrate in the Mei Tiaolei road corresponded on blackboard eraser, and described dust absorption passage is provided with unidirectional ash intake valve; Described vacuum chamber is fixedly connected on the back side of substrate by its upper bottom surface and bottom surface, its arranged on left and right sides face is the evagination convex structure utilizing elastomeric material to make, evenly have multiple laying dust hole at the bottom surface of vacuum chamber, described laying dust hole is provided with unidirectional laying dust valve; Described laying dust box is fixed on the bottom surface of vacuum chamber, and the bottom of described laying dust box is dismountable laying dust bucket, and the two sides on described laying dust box top are equipped with the laying dust box opening communicated with outside, and the inner side and outer side of described laying dust box opening is respectively arranged with baffle plate.
Description
Technical field
The utility model relates to a kind of blackboard eraser, and particularly a kind of dust absorption blackboard eraser, belongs to teaching aid.
Background technology
In teaching process, blackboard, chalk and blackboard eraser are very common teaching aids.In use there are some defects in the blackboard eraser of existing teaching, namely while utilizing blackboard eraser wiping letter written with chalk, chalk dust can fly upward everywhere, had a strong impact on the healthy of teacher and the nearer classmate of distance blackboard.
Summary of the invention
For the above-mentioned shortcoming existed in prior art, the utility model provide a kind ofly can prevent chalk dust from flying upward, can by the dust absorption blackboard eraser of chalk dust centralized collection.
The utility model is achieved by the following technical solution: a kind of dust absorption blackboard eraser, is characterized in that: comprise blackboard eraser, substrate, vacuum chamber and laying dust box, described blackboard eraser evenly has Duo Tiaolei road along its length; Described substrate is fixed on the back side of blackboard eraser, and on substrate, multiple diameter dust absorption passage identical with the width in rib road is evenly opened along the thickness direction of substrate in the Mei Tiaolei road corresponded on blackboard eraser, and described dust absorption passage is provided with unidirectional ash intake valve; Described vacuum chamber is fixedly connected on the back side of substrate by its upper bottom surface and bottom surface, its arranged on left and right sides face is the evagination convex structure utilizing elastomeric material to make, evenly have multiple laying dust hole at the bottom surface of vacuum chamber, described laying dust hole is provided with unidirectional laying dust valve; Described laying dust box is fixed on the bottom surface of vacuum chamber, the bottom of described laying dust box is dismountable laying dust bucket, the two sides on the top of described laying dust box are equipped with the laying dust box opening communicated with outside, and the inner side and outer side of described laying dust box opening is respectively arranged with baffle plate.
In the utility model, the Duo Tiaolei road that blackboard eraser is offered ensure that and is more conducive to the erasing of letter written with chalk by the friction effect between blackboard eraser and blackboard, and more chalk dust is concentrated in rib road simultaneously.The evagination convex structure of the vacuum chamber left and right sides has elasticity, by extruding it and unclamping, can produce suction, in order to dust suction.The laying dust box opening that laying dust box is arranged ensure that the consistent of laying dust box inner and outer air pressure, and unidirectional laying dust valve events is achieved.The baffle plate being arranged on the inner side of laying dust box opening is directly discharged by laying dust box opening for preventing chalk dust, is arranged on the baffle plate in the outside of laying dust box opening for stopping the chalk dust may discharged by laying dust box opening on a small quantity.When the utility model uses, by constantly extruding and unclamp the evagination convex structure of vacuum chamber left and right sides, chalk dust can be inhaled in blackboard eraser by the dust absorption passage on substrate, enter in laying dust box through unidirectional ash intake valve, vacuum chamber, unidirectional laying dust valve successively, namely chalk dust is collected.When the chalk dust in laying dust bucket is collected full, then can pull down laying dust bucket, chalk dust be concentrated and topples over.
The outlet of described unidirectional ash intake valve is towards vacuum chamber, and the outlet of described unidirectional laying dust valve is towards laying dust box.
For ease of collection and the discharge of dust, the bottom surface of described vacuum chamber is concave panel.
Further scheme is, described in be arranged on laying dust box opening inner side and outside baffle plate be all fixed on the upper end edge of laying dust box opening, wherein the baffle plate of inner side is to the inner side inclined downward of laying dust box, and the baffle plate in outside is to the outside inclined downward of laying dust box.The baffle plate be obliquely installed of inner side can effectively prevent the chalk dust of discharging from unidirectional laying dust valve from directly being discharged by laying dust box opening, be convenient to chalk dust by centralized collection in laying dust bucket, the baffle plate be obliquely installed in outside can make the chalk dust may discharged by laying dust box opening on a small quantity discharge downwards, prevents from being directly ejected on the person.
The beneficial effects of the utility model are: the utility model can when blackboard wiping by the elastomeric material of the extruding vacuum chamber left and right sides, produce suction, thus the chalk dust produced during blackboard wiping is sucked in blackboard eraser, chalk dust is collected in laying dust box, prevent chalk dust from flying upward everywhere, reduce the possibility that chalk dust is sucked by teacher and classmate, alleviate chalk dust to teacher and the healthy impact caused of classmate.
Accompanying drawing explanation
Fig. 1 is schematic front view of the present utility model;
Fig. 2 is that schematic diagram is looked on a left side of the present utility model;
Fig. 3 is the A-A schematic diagram in Fig. 2;
Fig. 4 is the close-up schematic view of the laying dust box in the utility model;
In figure, 1 is blackboard eraser, and 2 is evagination convex structures, 3 Shi Lei roads, and 4 is substrates, 5 is vacuum chambers, and 6 is unidirectional laying dust valves, and 7 is laying dust holes, and 8 is laying dust boxes, and 9 is outer side shields, 10 is inner side baffle, and 11 is laying dust buckets, and 12 is unidirectional ash intake valves, and 13 is dust absorption passages, and 14 is laying dust box openings.
Detailed description of the invention
Also by reference to the accompanying drawings the utility model is further described below by non-limiting embodiment:
As shown in drawings, a kind of dust absorption blackboard eraser, it comprises blackboard eraser 1, substrate 4, vacuum chamber 5 and laying dust box 8.Described blackboard eraser 1 evenly has Duo Tiaolei road 3 along its length.Described substrate 4 is fixed on the back side of blackboard eraser 1, on substrate 4, multiple diameter dust absorption passage identical with the width in rib road 3 13 is evenly opened along the thickness direction of substrate 4 in the Mei Tiaolei road 3 corresponded on blackboard eraser 1, and described dust absorption passage 13 is provided with unidirectional ash intake valve 12.Vacuum chamber 5 is hollow structure inside, vacuum chamber 5 is fixedly connected on the back side of substrate 4 by its upper bottom surface and bottom surface, the arranged on left and right sides face of vacuum chamber 5 is the evagination convex structure 2 utilizing elastomeric material to make, evenly have multiple laying dust hole 7 at the bottom surface of vacuum chamber 5, described laying dust hole 7 is provided with unidirectional laying dust valve 6.Laying dust box 8 is fixed on the bottom surface of vacuum chamber 5, the bottom of described laying dust box 8 is dismountable laying dust bucket 11, the two sides on the top of laying dust box 8 are equipped with the laying dust box opening 14 communicated with outside, and the inner side and outer side of laying dust box opening 14 is respectively arranged with inner side baffle 10 and outer side shield 9.The outlet of unidirectional ash intake valve 12 is towards vacuum chamber 5, and the outlet of unidirectional laying dust valve 6 is towards laying dust box 8.
For ease of collection and the discharge of dust, the bottom surface of vacuum chamber is preferably concave panel.
In the present embodiment, fly out to prevent the chalk dust in laying dust box, inner side baffle 10 and outer side shield 9 are all fixed on the upper end edge of laying dust box opening 14, wherein inner side baffle 10 is to the inner side inclined downward of laying dust box 8, outer side shield 9 is to the outside inclined downward of laying dust box, inner side baffle 10 is obliquely installed and can effectively prevents the chalk dust of discharging from unidirectional laying dust valve from directly being discharged by laying dust box opening 14, be convenient to chalk dust by centralized collection in laying dust bucket 11, outer side shield 9 is obliquely installed and the chalk dust may discharged by laying dust box opening 14 on a small quantity can be made downwards to discharge, chalk dust is prevented directly to be ejected on the person.
When the utility model uses, the flexible evagination convex structure 2 of extruding vacuum chamber 5 left and right sides, the unidirectional ash intake valve 12 on substrate 4 is closed, and the unidirectional laying dust valve 6 on vacuum chamber 5 bottom surface is opened, chalk dust enters laying dust box 8 by vacuum chamber 5, is collected in laying dust bucket 11; Unclamp the evagination convex structure 2 of vacuum chamber 5 left and right sides, the unidirectional ash intake valve 12 on substrate 4 is opened, and the unidirectional laying dust valve 6 on vacuum chamber 5 bottom surface cuts out, and chalk dust enters vacuum chamber 5 by rib road 3 through dust absorption passage 13.So repeatedly extrude and unclamp the evagination convex structure 2 of vacuum chamber 5 left and right sides, chalk dust can be inhaled in blackboard eraser by dust absorption passage 13, and enter in laying dust box 8 through unidirectional ash intake valve 12, vacuum chamber 5, unidirectional laying dust valve 6 successively, namely chalk dust is collected, when the chalk dust in laying dust bucket 11 is collected full, then can pull down laying dust bucket 11, chalk dust be concentrated and topples over.
Other parts in the present embodiment adopt known technology, do not repeat them here.
Claims (4)
1. a dust absorption blackboard eraser, it is characterized in that: comprise blackboard eraser (1), substrate (4), vacuum chamber (5) and laying dust box (8), described blackboard eraser (1) evenly has Duo Tiaolei road (3) along its length; Described substrate (4) is fixed on the back side of blackboard eraser (1), evenly open multiple diameter dust absorption passage (13) identical with the width of rib road (3) in the upper Mei Tiaolei road (3) corresponded on blackboard eraser (1) of substrate (4) along the thickness direction of substrate (4), described dust absorption passage (13) is provided with unidirectional ash intake valve (12); Described vacuum chamber (5) is fixedly connected on the back side of substrate (4) by its upper bottom surface and bottom surface, its arranged on left and right sides face is the evagination convex structure utilizing elastomeric material to make, evenly have multiple laying dust hole (7) at the bottom surface of vacuum chamber (5), described laying dust hole (7) is provided with unidirectional laying dust valve (6); Described laying dust box (8) is fixed on the bottom surface of vacuum chamber (5), the bottom of described laying dust box (8) is dismountable laying dust bucket (11), the two sides on described laying dust box (8) top are equipped with the laying dust box opening (14) communicated with outside, and the inner side and outer side of described laying dust box opening (14) is respectively arranged with baffle plate.
2. dust absorption blackboard eraser according to claim 1, is characterized in that: the outlet of described unidirectional ash intake valve (12) is towards vacuum chamber (5), and the outlet of described unidirectional laying dust valve (6) is towards laying dust box (8).
3. dust absorption blackboard eraser according to claim 1, is characterized in that: the bottom surface of described vacuum chamber (5) is concave panel.
4. dust absorption blackboard eraser according to claim 1, it is characterized in that: described in be arranged on laying dust box opening (14) inner side and outer side baffle plate be all fixed on the upper end edge of laying dust box opening (14), wherein the baffle plate of inner side is to the inner side inclined downward of laying dust box, and the baffle plate in outside is to the outside inclined downward of laying dust box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188135.5U CN204506278U (en) | 2015-03-31 | 2015-03-31 | A kind of dust absorption blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188135.5U CN204506278U (en) | 2015-03-31 | 2015-03-31 | A kind of dust absorption blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204506278U true CN204506278U (en) | 2015-07-29 |
Family
ID=53704279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520188135.5U Expired - Fee Related CN204506278U (en) | 2015-03-31 | 2015-03-31 | A kind of dust absorption blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204506278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346314A (en) * | 2015-11-19 | 2016-02-24 | 四川省华蓥市第一中学 | Dustproof blackboard eraser |
| CN108146111A (en) * | 2017-12-29 | 2018-06-12 | 天津丰澳教育科技有限公司 | A kind of new teaching dust-free blackboard |
-
2015
- 2015-03-31 CN CN201520188135.5U patent/CN204506278U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346314A (en) * | 2015-11-19 | 2016-02-24 | 四川省华蓥市第一中学 | Dustproof blackboard eraser |
| CN108146111A (en) * | 2017-12-29 | 2018-06-12 | 天津丰澳教育科技有限公司 | A kind of new teaching dust-free blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |