CN204451708U - A kind of automatic changing surface Automatic erasing blackboard - Google Patents
A kind of automatic changing surface Automatic erasing blackboard Download PDFInfo
- Publication number
- CN204451708U CN204451708U CN201520170049.1U CN201520170049U CN204451708U CN 204451708 U CN204451708 U CN 204451708U CN 201520170049 U CN201520170049 U CN 201520170049U CN 204451708 U CN204451708 U CN 204451708U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- plate body
- cylinder
- slide block
- fixing slide
- 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 provides a kind of automatic changing surface Automatic erasing blackboard, its structure comprises blackboard plate body, blackboard support and two cylinder blackboard erasers with positive and negative two the writing surface CONTACT WITH FRICTION of blackboard plate body with positive and negative two writing surfaces, arc-shaped limit steering block is provided with above blackboard plate body, blackboard plate body two sides vertically offer serrate slot, arrange two row's driving racks in rach slot, two row's driving racks are meshed with the gear be located on motor output shaft; Described its surface coverage of cylinder blackboard eraser has bristle, be connected by axle connecting rod between two cylinder blackboard erasers, axle connecting rod is installed with fixing slide block, fixing slide block one end is provided with hemisphere jut, this hemisphere jut matches with the arc groove track being vertically opened in rach slot inner surface, blackboard support is fixed with alignment pin, and alignment pin is articulated and connected through blackboard support and fixing slide block.The utility model expands the usable floor area of blackboard, while blackboard changes face, and can also auto-erasing blackboard.
Description
Technical field
The utility model relates to a kind of teaching aid, specifically a kind of automatic changing surface Automatic erasing blackboard.
Background technology
Blackboard is requisite teaching aid in teacher's daily teaching, and existing blackboard exists following problem when reality uses:
1, existing blackboard can only use by one side, uses and comparatively wastes;
2, existing blackboard needs manual operation blackboard eraser Wiper plate face after using, and uses very inconvenient.
Summary of the invention
Technical assignment of the present utility model is for the deficiencies in the prior art, provides a kind of automatic changing surface Automatic erasing blackboard.
The utility model solves the technical scheme that its technical problem adopts:
A kind of automatic changing surface Automatic erasing blackboard, comprise blackboard plate body and blackboard support, blackboard plate body has positive and negative two writing surfaces, also comprise two cylinder blackboard erasers of positive and negative two writing surface CONTACT WITH FRICTION with blackboard plate body, arc-shaped limit steering block is provided with above blackboard plate body, reserved certain distance between blackboard plate body and arc-shaped limit steering block, blackboard plate body two sides vertically offer serrate slot, arrange two row's driving racks in rach slot, two row's driving racks are meshed with the gear be located on motor output shaft;
Described cylinder blackboard eraser horizontally set, and its surface coverage has bristle, be connected by axle connecting rod between two cylinder blackboard erasers, axle connecting rod is installed with fixing slide block, fixing slide block one end is provided with hemisphere jut, this hemisphere jut matches with the arc groove track being vertically opened in rach slot inner surface, and blackboard support is fixed with alignment pin, and alignment pin is articulated and connected through blackboard support and fixing slide block.
A kind of automatic changing surface Automatic erasing blackboard of the present utility model, contact with arc limiting steering block when blackboard plate body rises to, cylinder blackboard eraser is formed be slidably matched by being located at fixing slide block on axle connecting rod and arc groove track, when blackboard plate body rise to contact with arc limiting steering block time, cylinder blackboard eraser is rolled around arc groove rail contact face by the fixing slide block be located on axle connecting rod, and being formed rolls coordinates.
Described motor and cylinder blackboard eraser are all located at the top of blackboard plate body.
Described cylinder blackboard eraser length is identical with blackboard plate body length.
Compared with prior art, the beneficial effect produced is a kind of automatic changing surface Automatic erasing blackboard of the present utility model: structure is simple, convenient and practical, expand the usable floor area of blackboard, while blackboard changes face, all right auto-erasing blackboard, improves efficiency of teaching and quality.
Accompanying drawing explanation
Accompanying drawing 1 is the main TV structure schematic diagram of a kind of automatic changing surface of the utility model Automatic erasing blackboard.
Accompanying drawing 2 is that the A-A of Fig. 1 is to sectional structure schematic diagram;
Accompanying drawing 3 is that the B-B of Fig. 1 is to sectional structure schematic diagram;
Accompanying drawing 4 is the side-looking structural representation after a kind of automatic changing surface Automatic erasing blackboard of the utility model removes motor.
In figure, 1, blackboard plate body, 2, cylinder blackboard eraser, 3, blackboard support, 4, bristle, 5, alignment pin, 6, arc groove track, 7, fixing slide block, 8, driving rack, 9, arc-shaped limit steering block, 10, motor, 11, axle connecting rod, 12, rach slot, 13, gear.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-4, a kind of automatic changing surface Automatic erasing blackboard of the present utility model is described in detail below.
As accompanying drawing 1, 3, shown in 4, a kind of automatic changing surface Automatic erasing blackboard of the present utility model, its structure comprises blackboard plate body 1 and blackboard support 3, blackboard plate body 1 has positive and negative two writing surfaces, also comprise two cylinder blackboard erasers 2 of positive and negative two writing surface CONTACT WITH FRICTION with blackboard plate body 1, and cylinder blackboard eraser 2 length is identical with blackboard plate body 1 length, arc-shaped limit steering block 9 is provided with above blackboard plate body 1, reserved certain distance between blackboard plate body 1 and arc-shaped limit steering block 9, blackboard plate body 1 two sides vertically offer serrate slot 12, two row's driving racks 8 are set in rach slot 12, two row's driving racks 8 are meshed with the gear 13 be located on motor 10 output shaft, the top being all located at blackboard plate body 1 wiped by above-mentioned motor 10 and roller plate 2.
Cylinder blackboard eraser 2 horizontally set as described in accompanying drawing 2,3,4, and its surface coverage has bristle 4, be connected by axle connecting rod 11 between two cylinder blackboard erasers 2, axle connecting rod 11 is installed with fixing slide block 7, fixing slide block 7 one end is provided with hemisphere jut, this hemisphere jut matches with the arc groove track 6 being vertically opened in rach slot 12 inner surface, blackboard support 3 is fixed with alignment pin 5, and alignment pin 5 is articulated and connected through blackboard support 3 and fixing slide block 7.
A kind of automatic changing surface Automatic erasing blackboard of the present utility model, during use, arc-shaped limit steering block 9 is fixed on metope, positive and negative two writing surfaces of blackboard plate body 1 arrange cylinder blackboard eraser 2 respectively, during use, motor 10 passes through rack and pinion drive mechanism, blackboard plate body 1 is made to increase, concrete, blackboard support 3 and remaining unchanged with the position of cylinder blackboard eraser 2, because cylinder blackboard eraser 2 is matched with the arc groove track 6 on blackboard plate body 1 by the fixing slide block 7 be located on axle connecting rod 11, relative motion is formed like this between cylinder blackboard eraser 2 and blackboard plate body 1, so just can realize the auto-erasing of blackboard plate body 1 writing surface, when blackboard plate body 1 rise to contact with arc-shaped limit steering block 9 time, blackboard plate body 1 rotates under arc-shaped limit steering block 9 acts on, cylinder blackboard eraser 2 is rolled around arc groove track 6 contact surface by the fixing slide block 7 be located on axle connecting rod 11, being formed rolls coordinates, cylinder blackboard eraser 2 does not rise with blackboard plate body 1, when forwarding arc groove track 6 peak to, blackboard plate body 1 rises to the position of more than center of gravity, now blackboard plate body 1 is rotated further under gravity and rack and pinion drive mechanism effect, be replaced by another side forward, so just can realize the automatic replacing of blackboard plate body 1 writing surface.
A kind of its processing and fabricating of automatic changing surface Automatic erasing blackboard of the present utility model is simple and convenient, processing and fabricating shown in by specification accompanying drawing.
Except the technical characteristic described in description, be the known technology of those skilled in the art.
Claims (4)
1. an automatic changing surface Automatic erasing blackboard, comprise blackboard plate body and blackboard support, it is characterized in that, described blackboard plate body has positive and negative two writing surfaces, also comprise two cylinder blackboard erasers of positive and negative two writing surface CONTACT WITH FRICTION with blackboard plate body, arc-shaped limit steering block is provided with above blackboard plate body, reserved certain distance between blackboard plate body and arc-shaped limit steering block, blackboard plate body two sides vertically offer serrate slot, arrange two row's driving racks in rach slot, two row's driving racks are meshed with the gear be located on motor output shaft;
Described cylinder blackboard eraser horizontally set, and its surface coverage has bristle, be connected by axle connecting rod between two cylinder blackboard erasers, axle connecting rod is installed with fixing slide block, fixing slide block one end is provided with hemisphere jut, this hemisphere jut matches with the arc groove track being vertically opened in rach slot inner surface, and blackboard support is fixed with alignment pin, and alignment pin is articulated and connected through blackboard support and fixing slide block.
2. a kind of automatic changing surface Automatic erasing blackboard according to claim 1, it is characterized in that, contact with arc limiting steering block when blackboard plate body rises to, cylinder blackboard eraser is formed be slidably matched by being located at fixing slide block on axle connecting rod and arc groove track, when blackboard plate body rise to contact with arc limiting steering block time, cylinder blackboard eraser is rolled around arc groove rail contact face by the fixing slide block be located on axle connecting rod, and being formed rolls coordinates.
3. a kind of automatic changing surface Automatic erasing blackboard according to claim 1 and 2, is characterized in that, described motor and cylinder blackboard eraser are all located at the top of blackboard plate body.
4. a kind of automatic changing surface Automatic erasing blackboard according to claim 1 and 2, is characterized in that, described cylinder blackboard eraser length is identical with blackboard plate body length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520170049.1U CN204451708U (en) | 2015-03-25 | 2015-03-25 | A kind of automatic changing surface Automatic erasing blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520170049.1U CN204451708U (en) | 2015-03-25 | 2015-03-25 | A kind of automatic changing surface Automatic erasing blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204451708U true CN204451708U (en) | 2015-07-08 |
Family
ID=53658645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520170049.1U Expired - Fee Related CN204451708U (en) | 2015-03-25 | 2015-03-25 | A kind of automatic changing surface Automatic erasing blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204451708U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107128105A (en) * | 2017-05-05 | 2017-09-05 | 宿州学院 | A kind of College Chinese teaching method and device |
| CN108357261A (en) * | 2018-05-21 | 2018-08-03 | 佛山科学技术学院 | A kind of device of automatic blackboard cleaning |
-
2015
- 2015-03-25 CN CN201520170049.1U patent/CN204451708U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107128105A (en) * | 2017-05-05 | 2017-09-05 | 宿州学院 | A kind of College Chinese teaching method and device |
| CN108357261A (en) * | 2018-05-21 | 2018-08-03 | 佛山科学技术学院 | A kind of device of automatic blackboard cleaning |
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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: 20150708 Termination date: 20160325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |