CN203752737U - Circular alternating wiping-free dustless blackboard - Google Patents
Circular alternating wiping-free dustless blackboard Download PDFInfo
- Publication number
- CN203752737U CN203752737U CN201320895666.9U CN201320895666U CN203752737U CN 203752737 U CN203752737 U CN 203752737U CN 201320895666 U CN201320895666 U CN 201320895666U CN 203752737 U CN203752737 U CN 203752737U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- plate body
- handle
- fixed
- gear
- 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 discloses a circular alternating wiping-free dustless blackboard, which is formed by a blackboard board body, a blackboard frame, gear belts, gears, a conical steering gear bank, a handle, a handle support, blackboard wiping felts and a containing box; the circular alternating wiping-free dustless blackboard is characterized in that two sliders are respectively arranged at two transverse ends of the blackboard board body; the blackboard board body can be clamped and alternatively vertically slide in chutes in the blackboard frame by the sliders; the gear belts are fixed at the transverse edges of the blackboard board body and are just meshed with the gears fixed at the middles of the blackboard frame; the gears rotate to drive the gear belts to rotate, so the blackboard board body is driven to move up and down; the handle is fixed on a wall body beside the blackboard frame by the handle support; the handle controls the vertical alternating moving of the blackboard by the conical steering gear bank; the plurality of strip-shaped blackboard felts are fixed at the rear part of the blackboard body; characters are wiped in the vertical alternating moving process of the blackboard, so the defects that the blackboard needs to be manually cleaned and dust is generated are solved.
Description
Technical field
The utility model relates to a kind of cycle alternation formula and exempts from erasing dust-free blackboard, belongs to teaching field.
Background technology
The blackboard of the use of attending class at present has Glass blackboard, cement blackboard, wooden blackboard, high molecular polymerization blackboard etc., but these blackboards are all the shortcomings that need to manually shampoo, manually in the time of shampooing blackboard, can produce a large amount of chalk dusts, very easily be drawn onto lung by academics and students, people's health is had to very large injury.And also have at present other automatic blackboard eraser, as license notification number CN203172303U, the number of patent application patent that is 201320178488.8 discloses a kind of automatic blackboard eraser of separated regions, but its complex structure, the time erasing the board is still blackboard eraser and before blackboard, wipes the chalk font on blackboard, but in this process, still can produce a large amount of chalk dusts, still can damage student and teacher's health; Exempt to wipe dustless blackboard and also do not occur and can realize at present.
Summary of the invention
The purpose of this utility model is to provide a kind of cycle alternation formula to exempt from erasing dust-free blackboard, and solving blackboard from root needs the artificial shortcoming of cleaning and producing dust.
A kind of cycle alternation formula is exempted from erasing dust-free blackboard, by the gear band at the blackboard plate body of band handle, blackboard framework, blackboard plate body edge, form with fixing blackboard eraser felt, the dust of blackboard plate body below and the box of accepting of chalk of gear band meshed gears, taper commutating tooth wheels, handle, handle bracket, reactionary gang's plate body rear portion, it is characterized in that the transverse ends of described blackboard plate body is respectively with two slide blocks, blackboard plate body is stuck in by slide block in the slideway in the blackboard framework on both sides, and blackboard plate body can carry out by the slideway in blackboard framework the slip of alternatively up and down, described gear band is fixed on the transverse edge of blackboard plate body, and gear band is just meshed with the gear that is fixed on blackboard framework central authorities, the rotation that the rotation of gear can driven gear band, and then just driven moving up and down of blackboard plate body, described taper commutating tooth wheels one end is connected with the gear that is fixed on blackboard framework central authorities by connecting rod, and the other end is connected with handle, described handle is fixed on by handle bracket on the body of wall on blackboard framework side, described blackboard plate body rear portion is fixed with the blackboard eraser felt of several piece bar shaped, and the thickness of strip blackboard eraser felt is slightly larger than two spaces between blackboard plate body, in use, when writing and expired word on the blackboard plate body of below, need to use top blackboard plate body time, people can manually inwardly push away the blackboard plate body of below, hand is put in handle the blackboard plate body of top is pulled down again, blackboard plate body will move by the slideway in blackboard framework like this, in moving process, blackboard eraser felt between two blackboard plate bodys will be cleaned the letter written with chalk on that piece blackboard plate body rising, and the blackboard plate body gear moving down in the process of wiping people erased the board between plate body with quilt, and dust can be fallen and accept box top, people also just can not suck a large amount of chalk dusts, the alternatively up and down that simultaneously people can also realize blackboard plate body by the rotation of the rotation driven gear of handle and gear band moves.
Brief description of the drawings
Fig. 1 is blast structural representation of the present utility model.
Fig. 2 is that entirety of the present utility model is faced structural representation.
Fig. 3 is blackboard framework structural representation of the present utility model.
In figure: blackboard plate body 1, slide block 1-1, handle 1-2, blackboard framework 2, slideway 2-1, gear band 3, gear 4, taper commutating tooth wheels 5, handle 6, handle bracket 7, blackboard eraser felt 8, accepts box 9.
Detailed description of the invention
Be below the preferred embodiments of the utility model patent, therefore do not limit protection domain of the present utility model.
As shown in Figure 1, a kind of cycle alternation formula is exempted from erasing dust-free blackboard, by the blackboard plate body 1 of band handle 1-2, blackboard framework 2, the gear band 3 at blackboard plate body 1 edge, with gear band meshed gears 4, taper commutating tooth wheels 5, handle 6, handle bracket 7, the blackboard eraser felt 8 that reactionary gang's plate body 1 rear portion is fixing, the box 9 of accepting of the dust of blackboard plate body 1 below and chalk forms, it is characterized in that the transverse ends of described blackboard plate body 1 is respectively with two slide block 1-1, blackboard plate body 1 is stuck in by slide block 1-1 in the slideway 2-1 in the blackboard framework 2 on both sides, blackboard plate body 1 can carry out by the slideway 2-1 in blackboard framework 2 slip of alternatively up and down, described gear band 3 is fixed on the transverse edge of blackboard plate body 1, and gear band 3 is just meshed with the gear 4 that is fixed on blackboard framework 2 central authorities, the rotation that the rotation of gear 4 can driven gear band 3, and then just driven moving up and down of blackboard plate body 1, described taper commutating tooth wheels 5 one end are connected with the gear 4 that is fixed on blackboard framework 2 central authorities by connecting rod, and the other end is connected with handle 6, described handle 6 is fixed on by handle bracket 7 on the body of wall on blackboard framework 2 sides, described blackboard plate body 1 rear portion is fixed with the blackboard eraser felt 8 of several piece bar shaped, and the thickness of strip blackboard eraser felt 8 is slightly larger than two spaces between blackboard plate body 1, in use, when writing and expired word on below blackboard plate body 1, need to use top blackboard plate body time, people can manually inwardly push away the blackboard plate body 1 of below, again hand is put in handle 1-2 the blackboard plate body of top is pulled down, blackboard plate body 1 will move by the slideway 2-1 in blackboard framework 2 like this, in moving process, blackboard eraser felt 8 between two blackboard plate bodys will be cleaned the letter written with chalk on that piece blackboard plate body rising, and the blackboard plate body gear moving down in the process of wiping people erased the board between plate body with quilt, and dust can be fallen and accept box top, people also just can not suck a large amount of chalk dusts, the alternatively up and down that simultaneously people can also realize blackboard plate body by the rotation of the rotation driven gear of handle 64 and gear band 3 moves.
The utility model solves blackboard from root needs the artificial shortcoming of cleaning and producing dust, and novel structure and easily operation, have larger value for applications.
Claims (1)
1. a cycle alternation formula is exempted from erasing dust-free blackboard, by the gear band at the blackboard plate body of band handle, blackboard framework, blackboard plate body edge, form with fixing blackboard eraser felt, the dust of blackboard plate body below and the box of accepting of chalk of gear band meshed gears, taper commutating tooth wheels, handle, handle bracket, reactionary gang's plate body rear portion, it is characterized in that the transverse ends of described blackboard plate body is respectively with two slide blocks, blackboard plate body is stuck in by slide block in the slideway in the blackboard framework on both sides, and blackboard plate body can carry out by the slideway in blackboard framework the slip of alternatively up and down; Described gear band is fixed on the transverse edge of blackboard plate body, and gear band is just meshed with the gear that is fixed on blackboard framework central authorities, the rotation that the rotation of gear can driven gear band, and then just driven moving up and down of blackboard plate body; Described taper commutating tooth wheels one end is connected with the gear that is fixed on blackboard framework central authorities by connecting rod, and the other end is connected with handle; Described handle is fixed on by handle bracket on the body of wall on blackboard framework side; Described blackboard plate body rear portion is fixed with the blackboard eraser felt of several piece bar shaped, and the thickness of strip blackboard eraser felt is slightly larger than two spaces between blackboard plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895666.9U CN203752737U (en) | 2013-12-29 | 2013-12-29 | Circular alternating wiping-free dustless blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320895666.9U CN203752737U (en) | 2013-12-29 | 2013-12-29 | Circular alternating wiping-free dustless blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203752737U true CN203752737U (en) | 2014-08-06 |
Family
ID=51248043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320895666.9U Expired - Fee Related CN203752737U (en) | 2013-12-29 | 2013-12-29 | Circular alternating wiping-free dustless blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203752737U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754025A (en) * | 2013-12-29 | 2014-04-30 | 刘艳丰 | Circulatory alternative cleaning-free dust-free blackboard |
| CN106313963A (en) * | 2016-09-23 | 2017-01-11 | 杭州富阳尚科科技有限公司 | Automatic cleaning spliced blackboard with double using faces |
| CN115489224A (en) * | 2022-09-30 | 2022-12-20 | 富阳学院 | Teaching aid |
-
2013
- 2013-12-29 CN CN201320895666.9U patent/CN203752737U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754025A (en) * | 2013-12-29 | 2014-04-30 | 刘艳丰 | Circulatory alternative cleaning-free dust-free blackboard |
| CN106313963A (en) * | 2016-09-23 | 2017-01-11 | 杭州富阳尚科科技有限公司 | Automatic cleaning spliced blackboard with double using faces |
| CN115489224A (en) * | 2022-09-30 | 2022-12-20 | 富阳学院 | Teaching aid |
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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: 20140806 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |