CN2264087Y - Dustless blackboard - Google Patents
Dustless blackboard Download PDFInfo
- Publication number
- CN2264087Y CN2264087Y CN 96223829 CN96223829U CN2264087Y CN 2264087 Y CN2264087 Y CN 2264087Y CN 96223829 CN96223829 CN 96223829 CN 96223829 U CN96223829 U CN 96223829U CN 2264087 Y CN2264087 Y CN 2264087Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- board
- layer
- eraser
- 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 discloses a dustless blackboard. The utility model is composed of a writing board, a writing pen and an eraser, wherein, the writing board is composed of an upper layer, a middle layer and a lower layer. The upper layer is transparent film, the middle layer is pigment, and the lower layer is a hard lining board. The middle layer is sealed between the upper layer and the lower layer. Compared with the existing the prior art, the utility model has the advantages of simple structure, low cost, small occupation area and convenient use. The utility model can be used in different teaching.
Description
The utility model relates to a kind of blackboard.
Chinese patent CN2053573U discloses a kind of dust-free blackboard, and this blackboard is clipped between hyaline membrane and the lining form by coating and forms board, places the stiffener plate behind the board.Board is tightened by two cylinders, two screws and framework supporting, and a pair of cylinder of wiping of being furnished with spring is arranged behind the blackboard.Use up foxy lettering pen and write, wipe writing with eraser.This dust-free blackboard is provided with framework, stiffener plate and adjusts the screw that the plate face is used, complex structure, and the cost height, floor space is big, and screw stretches tight for a long time and draws the plate face that diminishes.
The purpose of this utility model is that a kind of dust-free blackboard simple in structure will be provided.
The purpose of this utility model is achieved in that this dust-free blackboard is made of board, lettering pen and eraser.Board is made of the upper, middle and lower.The upper strata is a hyaline membrane, and the middle level is a pigment, and lower floor is the stiffener plate.The middle level is sealed between the upper and lower.
The penholder of described lettering pen is straight.
In the middle of the described eraser is cylinder, cylinder outside cover rubber sleeve or blanket sleeve.
The utility model is compared with the prior art simple in structure, and cost is low, and floor space is little, and is easy to use, can be widely used in all kinds of teaching.
Elaborate below in conjunction with drawings and Examples.
Fig. 1 is a board structure chart of the present utility model.
Fig. 2 is a lettering pen structure chart of the present utility model.
Fig. 3 is an eraser structure chart of the present utility model.
(1) upper strata, (2) middle level, (3) lower floor, (4) penholder, (5) rubber sleeve, (6) cylinder among the figure.
In Fig. 1, board is made of upper strata (1), middle level (2) and lower floor (3).Upper strata (1) is a hyaline membrane, and the pigment of middle level (2) is black ink, and lower floor (3) is white stiffener plate.Middle level (2) is sealed between upper strata (1) and the lower floor (2).
In Fig. 2, the penholder of lettering pen (4) is straight.
In Fig. 3, be cylinder (6) in the middle of the eraser, cylinder (6) outside cover rubber sleeve (5) also can overlap blanket sleeve.
When lettering pen on the upper strata (1) of board when putting forth effort, middle level (2) are pressed against on one side, the color of lower floor (3) promptly is revealed.With eraser pigment middle level (2) are rolled over the even word that can disappear.Local writing can use penholder (4) to wipe.
Claims (3)
1, a kind of dust-free blackboard, this blackboard is made of board, lettering pen and eraser, it is characterized in that board is made of the upper, middle and lower, and the upper strata is a hyaline membrane, and the middle level is a pigment, and lower floor is the stiffener plate, the middle level is sealed between the upper and lower.
2, dust-free blackboard according to claim 1, the penholder that it is characterized in that lettering pen is straight.
3, dust-free blackboard according to claim 1 is characterized in that being cylinder in the middle of the eraser, cylinder outside cover rubber sleeve or blanket sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223829 CN2264087Y (en) | 1996-10-08 | 1996-10-08 | Dustless blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96223829 CN2264087Y (en) | 1996-10-08 | 1996-10-08 | Dustless blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2264087Y true CN2264087Y (en) | 1997-10-08 |
Family
ID=33902952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96223829 Expired - Fee Related CN2264087Y (en) | 1996-10-08 | 1996-10-08 | Dustless blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2264087Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011006430A1 (en) * | 2009-07-14 | 2011-01-20 | Wang Qi | High-definition erasing-free writing blackboard |
-
1996
- 1996-10-08 CN CN 96223829 patent/CN2264087Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011006430A1 (en) * | 2009-07-14 | 2011-01-20 | Wang Qi | High-definition erasing-free writing blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |