CN201357668Y - Streamlined wet type rolling blackboard eraser - Google Patents
Streamlined wet type rolling blackboard eraser Download PDFInfo
- Publication number
- CN201357668Y CN201357668Y CNU2008201609549U CN200820160954U CN201357668Y CN 201357668 Y CN201357668 Y CN 201357668Y CN U2008201609549 U CNU2008201609549 U CN U2008201609549U CN 200820160954 U CN200820160954 U CN 200820160954U CN 201357668 Y CN201357668 Y CN 201357668Y
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- China
- Prior art keywords
- streamlined
- tank
- felt
- upper roller
- wet type
- 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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Abstract
The utility model relates to a streamlined wet type rolling blackboard eraser comprising a streamlined casing. The bottom part of the streamlined casing is provided with two openings; an upper roller with felt and a lower roller with felt extend out of the two openings; the upper roller with felt is arranged in the casing and slightly extends into a water storage tank below the upper roller; the water storage tank is arranged on an external drawing groove of the water storage tank, and can be drawn outward; and the lower roller with felt is arranged slightly below the bottom part of the water storage tank, and the left end of the lower roller is flushed with the left end of the upper roller. The utility model has simple structure, coincides with the principle of human engineering, relieves the fatigue degree of the wrist, is attractive, meanwhile prevents the harm of dust on the health of teachers and students, and can be guaranteed a longer service period through changing water in the water storage tank.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically relates to be used to wipe the streamlined wet type rolling dust arrester of blackboard dust.
Background technology
Instructors all needs to write writing on the blackboard at school the time, yet the dust from flying phenomenon occurs through regular meeting when wiping letter written with chalk, has a strong impact on teaching, has also jeopardized the healthy of teacher and student.Simultaneously, existing blackboard eraser mostly is cuboidal configuration, does not meet ergonomic performance, and long-time use can cause wrist fatigue.So people are badly in need of a kind ofly can not producing dust and more comfortable blackboard eraser substitutes existing blackboard eraser.
Summary of the invention
The purpose of this utility model provides a kind of streamlined wet type Rolling blackboard and wipes, and is used to solve the long-time problem that wrist is tired and can't prevent dust pollution that causes of using of existing blackboard eraser.
In order to achieve the above object, the streamlined wet type Rolling blackboard of the utility model is wiped and is comprised a streamlined shell, and the streamlined shell bottom has two mouthfuls, and band felt upper roller, band felt bottom roller all stretch out two mouthfuls.Be with the felt upper roller in housing, and slightly stretch into the tank under it.Tank is placed on the outer kerve of tank, can outwards pull out.Band felt bottom roller is a little less than the tank bottom, and its left end is concordant with the upper roller left end.
The upper lobes curved surface features of streamlined shell matches with the finger buckling curve, the curved surface of undercut meets palm root curve and movement locus thereof, makes comfortable placement of palm and motion, has alleviated the degree of fatigue of wrist, also saved material to a certain extent, simultaneously very attractive in appearance again.
The band felt upper roller of streamlined shell inside can fully contact with the tank Chi Shui under being arranged on it at the volley, can effectively adsorb dust after its felt immersion.In band felt upper roller rotation process, tank can realize constantly cleaning the function that has attached dust on the upper roller, thereby realizes continuing dedusting.Simultaneously, bottom roller follows the upper roller motion closely, and the dried felt on its surface can absorb the blackboard surface rapidly because the residual water mark that the upper roller motion stays has solved the problem that can not use immediately after the blackboard immersion.
Can after blackboard eraser use a period of time, pull out tank and refill clear water by the outer kerve that is arranged on the tank bottom, guarantee that blackboard eraser has long life cycle.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model;
Fig. 2 is an A-A profile of the present utility model;
Fig. 3 is a B-B profile of the present utility model.
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the streamlined wet type Rolling blackboard of the utility model is wiped, and comprises a streamlined shell (1), and streamlined shell (1) bottom has two mouthfuls, and band felt upper roller (2), band felt bottom roller (3) all stretch out two mouthfuls.Band felt upper roller (2) is located in the housing (1), and stretches into the tank (4) under it.Tank (4) is placed on the outer kerve (5) of tank, and the outer kerve (5) of tank bottom is higher than band felt bottom roller (3).Band felt bottom roller (3) left end is concordant with upper roller (2) left end.Housing (1) is shaped as human body palm natural torsion shape, and the curved surface features of upper lobes matches with the finger buckling curve, and the curved surface of undercut meets palm root curve and movement locus thereof.Be with felt upper roller (2) directly over tank (4), and stretch into tank (4) underwater 1cm.Tank (4) between two rollers up and down, and can by tank outward kerve (5) outwards pull out.
Claims (4)
1. a streamlined wet type Rolling blackboard is wiped, it is characterized in that comprising a streamlined shell (1), streamlined shell (1) bottom has two mouthfuls, band felt upper roller (2), band felt bottom roller (3) all stretch out two mouthfuls, band felt upper roller (2) is located in the housing (1), and stretch into tank (4) under it, tank (4) is placed on the outer kerve (5) of tank, the outer kerve (5) of tank bottom is higher than band felt bottom roller (3), and band felt bottom roller (3) left end is concordant with upper roller (2) left end.
2. streamlined wet type Rolling blackboard according to claim 1 is wiped, it is characterized in that: this hull shape is a human body palm natural torsion shape, the curved surface features of upper lobes matches with the finger buckling curve, and the curved surface of undercut meets palm root curve and movement locus thereof.
3. streamlined wet type Rolling blackboard according to claim 1 is wiped, and it is characterized in that: be with the felt upper roller directly over tank, and stretch into tank underwater 1cm.
4. streamlined wet type Rolling blackboard according to claim 1 is wiped, and it is characterized in that: tank is up and down between two rollers, and can outwards pull out by the outer kerve of tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609549U CN201357668Y (en) | 2008-11-19 | 2008-11-19 | Streamlined wet type rolling blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609549U CN201357668Y (en) | 2008-11-19 | 2008-11-19 | Streamlined wet type rolling blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201357668Y true CN201357668Y (en) | 2009-12-09 |
Family
ID=41423431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201609549U Expired - Fee Related CN201357668Y (en) | 2008-11-19 | 2008-11-19 | Streamlined wet type rolling blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201357668Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114327159A (en) * | 2020-10-10 | 2022-04-12 | Tcl商用信息科技(惠州)有限责任公司 | Erasing device and display system |
-
2008
- 2008-11-19 CN CNU2008201609549U patent/CN201357668Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114327159A (en) * | 2020-10-10 | 2022-04-12 | Tcl商用信息科技(惠州)有限责任公司 | Erasing device and display system |
| CN114327159B (en) * | 2020-10-10 | 2023-09-19 | Tcl商用信息科技(惠州)有限责任公司 | Erasing device and display system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhao Hongchao Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20101119 |