CN202669321U - Novel dustproof blackboard eraser - Google Patents
Novel dustproof blackboard eraser Download PDFInfo
- Publication number
- CN202669321U CN202669321U CN 201220325999 CN201220325999U CN202669321U CN 202669321 U CN202669321 U CN 202669321U CN 201220325999 CN201220325999 CN 201220325999 CN 201220325999 U CN201220325999 U CN 201220325999U CN 202669321 U CN202669321 U CN 202669321U
- Authority
- CN
- China
- Prior art keywords
- friction plate
- dirt shell
- dust receiving
- receiving shell
- blackboard 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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Abstract
The utility model relates to education supplies and especially relates to a novel dustproof blackboard eraser. The novel dustproof blackboard eraser comprises a dust receiving shell and a plurality of friction plates arranged in parallel, wherein the dust receiving shell is a shell body provided with an open surface, a felt layer is wrapped on the outer side of the friction plate, the friction plate is vertically and fixedly connected with the two opposite side faces of the dust receiving shell, the friction plate is arranged to be inclined relative to the top face of the dust receiving shell, the friction plate is arranged at the open surface of the dust receiving shell, and the an opening and closing cover is detachably arranged on the back of the dust receiving shell. The included angle between the friction plate and the top face of the dust receiving shell is 45-65 degrees. The novel dustproof blackboard eraser is convenient to use, simple in structure, and low in cost and is capable of effectively reducing the dust generated during the wiping process, and certain beneficial effects are obtained.
Description
Technical field
The utility model relates to a kind of realia, especially a kind of Dustproof erasers.
Background technology
Blackboard eraser is the requisite instrument of upper teaching, but dust from flying in the classroom when at every turn erasing the board, chalk powder remains on the clothes even is inhaled into mouth and nose, has brought great inconvenience for student and teacher.Though more existing dust-proof blackboard erasers occur at present, because cost of manufacture is high, and economic not environmental protection, being difficult to promote the use of, present most schools are still using the most traditional blackboard eraser.
The utility model content
The utility model is intended to address the above problem, a kind of Dustproof erasers is provided, having overcome traditional blackboard, to wipe in wiping process dust how unhygienic and affect the healthy drawback of user, obtained certain beneficial effect, and its technical scheme that adopts is as follows:
A kind of Dustproof erasers, comprise and connect dirt shell and several friction plates that are arranged in parallel, the described dirt shell that connects is one to have the housing of an opening surface, the described friction plate outside is enclosed with felt layers, the lateral vertical that described friction plate is relative with two that connect the dirt shell is affixed, the connect top surface inclination setting of dirt shell of described friction plate, described friction plate is located at the opening surface place that connects the dirt shell, and the described dirt shell back that connects can be shirked and is provided with switch cover.
On the technique scheme basis, described friction plate is that 45 degree are to 65 degree with the end face angle that connects the dirt shell.
Compared with prior art, the utlity model has following advantage: easy to use, simple in structure, cost is low, can effectively reduce the dust that produces in wiping process.
Description of drawings
Fig. 1: cross-sectional view of the present utility model;
Fig. 2: backsight structural representation of the present utility model;
Symbol description
1. connect the dirt shell, 2. friction plate, 3. felt layers, 4. switch cover.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and example:
As depicted in figs. 1 and 2, a kind of Dustproof erasers of the present utility model, comprise and connect dirt shell 1 and several friction plates that are arranged in parallel 2, the described dirt shell 1 that connects is one to have the housing of an opening surface, described friction plate 2 outsides are enclosed with felt layers 3, the lateral vertical that described friction plate 2 is relative with two that connect dirt shell 1 is affixed, the connect top surface inclination setting of dirt shell 1 of described friction plate 2, described friction plate 2 is located at the opening surface place that connects dirt shell 1, and described dirt shell 1 back that connects can be shirked and is provided with switch cover 4.
Preferably, described friction plate 2 is that 45 degree are to 65 degree with the end face angle that connects dirt shell 1.
This Dustproof erasers constantly moves up and down when erasing the board, and chalk powder falls in the accommodating cavity that connects dirt shell 1 inside at effect of inertia; The connect top surface inclination setting of dirt shell 1 of friction plate 2 can stop that the dust that has entered blackboard eraser inside spills again; Can shirk and be provided with switch cover 4 connecing dirt shell 1 back, can the powder ash be poured out by opening switch cover 4 when wiping blackboard.
The above is illustrated the utility model with way of example, but the utility model is not limited to above-mentioned specific embodiment, and all any change or modification of doing based on the utility model all belong to the claimed scope of the utility model.
Claims (2)
1. Dustproof erasers, it is characterized in that: comprise connecing dirt shell and several friction plates that are arranged in parallel, the described dirt shell that connects is one to have the housing of an opening surface, the described friction plate outside is enclosed with felt layers, the lateral vertical that described friction plate is relative with two that connect the dirt shell is affixed, the connect top surface inclination setting of dirt shell of described friction plate, described friction plate is located at the opening surface place that connects the dirt shell, and the described dirt shell back that connects can be shirked and is provided with switch cover.
2. a kind of Dustproof erasers according to claim 1 is characterized in that: described friction plate is that 45 degree are to 65 degree with the end face angle that connects the dirt shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325999 CN202669321U (en) | 2012-06-26 | 2012-06-26 | Novel dustproof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220325999 CN202669321U (en) | 2012-06-26 | 2012-06-26 | Novel dustproof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202669321U true CN202669321U (en) | 2013-01-16 |
Family
ID=47490251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220325999 Expired - Fee Related CN202669321U (en) | 2012-06-26 | 2012-06-26 | Novel dustproof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202669321U (en) |
-
2012
- 2012-06-26 CN CN 201220325999 patent/CN202669321U/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: 20130116 Termination date: 20130626 |