CN202151972U - Blackboard - Google Patents
Blackboard Download PDFInfo
- Publication number
- CN202151972U CN202151972U CN2011202241803U CN201120224180U CN202151972U CN 202151972 U CN202151972 U CN 202151972U CN 2011202241803 U CN2011202241803 U CN 2011202241803U CN 201120224180 U CN201120224180 U CN 201120224180U CN 202151972 U CN202151972 U CN 202151972U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- blackboard eraser
- plate
- eraser
- plate body
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a blackboard which comprises a board body and a blackboard eraser, wherein the edge of the bottom of the board body is provided with a lower sliding chute; the edge of the top of the board body is provided with an upper sliding chute; one end of the blackboard eraser is mounted in the lower sliding chute; the other end of the blackboard eraser is mounted in the upper sliding chute; and the blackboard eraser is abutted with the surface of the board body. When the blackboard is erased, the blackboard eraser is only necessary to be pushed from one side to the other side of the blackboard, so that letters written with chalk on the blackboard can be completely and clearly erased, and the blackboard is quite convenient to use.
Description
Technical field
The utility model relates to teaching aid, particularly relates to a kind of blackboard.
Background technology
Before literal invention, it is found that charcoal can draw a picture, some mural paintings that can find ancient times some ancient times in the grotto in Europe, the crag of drawing these mural paintings is said from traditional sense and can be called blackboard.
Ancient Chinese is write on sandy soil with hardwood with a kind of article that are known as sand table for teaching is many repeatedly, but since the soft property of sandy soil, a kind of blackboard when it can not be interpreted as.
Middle Ages; It is found that lime and water are mixed and made into block, write at the hard article surface of dark color with the method that is similar to charcoal pencil, to 19th century; People are with the pitch-dark plank surface that is coated in; Be not etched with the protection plank, the main effect of blackboard at that time is not to be teaching certainly, and just school comes into vogue all over the world up to mid-term in 19th century.
Over more than 200 year, blackboard from the earliest spread upon plank with blacking, hard objects such as cement surfaces; To the water mill glass of the nineties, present color coated steel sheet, composite panel; Witness the development step by step of world's educational undertaking; For the mankind convey knowledge, distinctions won on the battlefield have been made in universal education.
Now, it is complicated various that the kind of blackboard also begins to become, and dividing from color has blackboard, green plate, blank etc.; From the surface configuration branch surface plate, cambered plate etc. are arranged; Form branch from structure support portable plate, draw back plate, lifter plate, magnet board etc. are arranged; From the purposes branch blackboard for education is arranged, office blank, billboard, Graphic Panel etc.And blackboard for education has electronic blackboard, multi-functional compoboard, combination push-and-pull blackboard, interactive electric whiteboard, band curtain projection plate or the like.
Green plate plate face is blackish green, writes with chalk, does not stimulate people's eyes, helps the protection of eyesight; Blank plate face is a white, how to write with various water-based crayons.Color coated steel sheet plate face adopts and is coated with the high duty alloy steel plate with wear-resistant coating, and mostly the plate face thickness is 0.3mm-0.4mm, wear-resisting, does not come off, colour-fast, durable in use.Write good hand touch, writing is clear, is prone to write, and is prone to wipe examination.The few new material composite plate of dust is to be left intact through the disposal pressed moulding surface by polymer inlet alloying pellet and epoxy resin, and the plate face thickness is 3mm, fluent writing; Writing is clear permanent non-slip; Not reflective, wipe the back noresidue, visual effect is splendid; Reach more than 15 years service life through test, this product is exclusively developed by blue Bei Site.Surface plate plate face is smooth smooth, and cambered plate plate face is a curved surface, prevents reflectively, can make the student who is sitting in each corner also can see the writing on the blackboard writing clearly, is applicable to bigger classroom.The support portable plate is equipped with various supports with blackboard, conveniently moving, and purposes is wide.The draw back plate lifter plate can move along certain tracks is multidirectional, writes conveniently, is beneficial to and watches.Magnet board serves as a contrast with the magnetic stripe bar magnet in blackboard inside, or at the surface attachment magnetic-particle.Can follow closely with magnetic during use, magnetic patch etc. fixed small-sized educational aid or the convenient displaying of picture.Multi-functional compoboard, interactive electric whiteboard, band curtain projection plate; Staff music blackboard is traditional blackboard with modern science and technology combine traditional blackboard; Be equipped with electronic whiteboard, projector, computer; And teaching software, hardware have perfectly replenished the defective in the conventional teaching accordingly, let the modernizing teaching technology really walk to enter the classroom, and are the inexorable trend of current development of educational cause.
The most widely used on the classroom at present is green plate.After using blackboard, must face a problem, that is exactly that the letter written with chalk on the blackboard is wiped, because blackboard eraser is very little for blackboard, therefore wiping is got up to require great effort time-consuming.Particularly for the not high student of height, can't wipe the letter written with chalk that is positioned at the blackboard top.
Summary of the invention
The utility model technical problem to be solved provides a kind of blackboard, can remove by Convenient scrubber.
The utility model solves the technical scheme that its technical problem adopted: a kind of blackboard is provided, comprises plate body and blackboard eraser, described plate body bottom margin is provided with gliding groove; Described plate body top is provided with upper hopper chute; Described blackboard eraser one end is installed in the described gliding groove, and the other end is installed in the described upper hopper chute; Fit in described blackboard eraser and described plate body surface.
The lower end of described blackboard eraser is provided with handle; Described handle passes described gliding groove.
Described blackboard eraser is the strip structure.
Beneficial effect
Owing to adopted above-mentioned technical scheme; The utility model compared with prior art; Have following advantage and good effect: the utility model is fixed on blackboard eraser on the plate face of blackboard; And the area that blackboard eraser covers, only needs when erasing the board blackboard eraser can be wiped clean the letter written with chalk on the blackboard from a thruster to the opposite side of blackboard fully to the bottom from the top of blackboard, and is very convenient during use.
Description of drawings
Fig. 1 is the structural representation of embodiment 1.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Present embodiment relates to a kind of blackboard, and is as shown in Figure 1, comprises plate body 1 and blackboard eraser 4, and described plate body 1 bottom margin is provided with ledge for chalk on blackboard, is provided with gliding groove 2 in the described ledge for chalk on blackboard; Described plate body 1 top is provided with upper hopper chute 3; Described blackboard eraser 4 two ends are equipped with one group of roller, and wherein, one group of roller is installed in the described gliding groove 2, and another group roller is installed in the described upper hopper chute 3, thereby make that blackboard eraser 4 can be movable flexibly in plate body 1 both sides.Described blackboard eraser 4 is fitted with described plate body 1 surface.Wherein, blackboard eraser 4 adopts the strip structure.In the time of need erasing the board, only need a thruster to the opposite side of blackboard eraser from blackboard got final product, the student of different statures like this can both be clean with blackboard eraser.Blackboard eraser bottom installs the leader additional, and makes handle pass the gliding groove of plate body bottom, like this can be more convenient when erasing the board.
Claims (3)
1. a blackboard comprises plate body and blackboard eraser, it is characterized in that, described plate body bottom margin is provided with gliding groove; Described plate body top is provided with upper hopper chute; Described blackboard eraser one end is installed in the described gliding groove, and the other end is installed in the described upper hopper chute; Fit in described blackboard eraser and described plate body surface.
2. blackboard according to claim 1 is characterized in that the lower end of described blackboard eraser is provided with handle; Described handle passes described gliding groove.
3. blackboard according to claim 1 and 2 is characterized in that, described blackboard eraser is the strip structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202241803U CN202151972U (en) | 2011-06-28 | 2011-06-28 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202241803U CN202151972U (en) | 2011-06-28 | 2011-06-28 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202151972U true CN202151972U (en) | 2012-02-29 |
Family
ID=45692478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202241803U Expired - Fee Related CN202151972U (en) | 2011-06-28 | 2011-06-28 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202151972U (en) |
-
2011
- 2011-06-28 CN CN2011202241803U patent/CN202151972U/en not_active Expired - Fee Related
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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: 20120229 Termination date: 20120628 |