CN201721214U

CN201721214U - Blackboard eraser

Info

Publication number: CN201721214U
Application number: CN2010202606051U
Authority: CN
Inventors: 王冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-16
Filing date: 2010-07-16
Publication date: 2011-01-26
Anticipated expiration: 2020-07-16

Abstract

The utility model provides a blackboard eraser belonging to the field of articles for culture and education. The structure of the blackboard eraser comprises a back plate, a protective cover, a bristle fixing plate and bristles, wherein the bristles are fixed on the bristle fixing plate, the protective cover is arranged at the periphery of the back plate and forms a semi-closed hollow cavity for containing the bristle fixing plate and the bristles with the lower surface of the back plate, and the bristle fixing plate is movably clamped in the semi-closed hollow cavity. The back plate is in a cuboid structure, and the upper surface of the back plate is movably provided with a control handle by screw threads. Compared with the prior art, the blackboard eraser has the characteristics of reasonable design, simple structure, high quality, low price, convenience, strong practicability and the like. The control handle is longer and adopts threaded connection, which is convenient to disassemble and wash, can also be convenient for a teacher and a student with shorter stature to wipe off the blackboard writing of a higher position on a blackboard, avoids that hands touch chalk dust directly, and is clean and convenient to use in a classroom.

Description

A kind of blackboard eraser

(1) technical field

The utility model relates to a kind of school supply and stationery, specifically a kind of blackboard eraser.

(2) background technology

At present, blackboard and blackboard eraser are still the requisite educational aid of classroom instruction.Blackboard has been become the blackboard of frosted glass material by old-fashioned wooden blackboard, can most of blackboard erasers still be old-fashioned structure in the past, comprises plank and the panniform bristle that is packed on the plank.During use, the letter written with chalk on the blackboard is wiped in hand-held blackboard eraser wiping repeatedly on blackboard.Owing to have only the contact height about 2 centimetres between blackboard eraser and the blackboard, so use very inconveniently, all be stained with dust when using on hand at every turn, sometimes hand also can be stabbed by the hard bristle of blackboard eraser or by around the iron limit scratch.When erasing the board, the chalk foam flies upward everywhere, has not only increased teacher's the respiratory tract incidence of disease, is also having a strong impact on student's health.

Though products such as electric dust absorption blackboard eraser, multifunction environment-protection type blackboard eraser are also arranged now,, can't realize large-area penetration and promotion because cost is too high.

(3) summary of the invention

Technical assignment of the present utility model is at the deficiencies in the prior art, provide a kind of simple in structure, easy to use, the cost cost is low and can prevent effectively that dust from disorderly flying the blackboard eraser that phenomenon takes place.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of blackboard eraser, comprise backboard, guard shield, bristle holder plate and bristle, bristle is fixed on the bristle holder plate, guard shield be arranged on backboard around and form a semiclosed cavity that holds bristle holder plate and bristle with the lower surface of backboard, the bristle holder plate active card is located in this semiclosed cavity.

Above-mentioned blackboard eraser, its backboard and guard shield are integral structure, and backboard is a rectangular structure.

Above-mentioned blackboard eraser, the upper surface of its backboard is movably set with control handle, is thread connection between backboard and the control handle, and this structure is convenient to teachers and students and is held, and avoids hand directly to touch dust; Thread connection again can be for convenience detach, and control handle has been broken and can have been changed.

A kind of blackboard eraser of the present utility model compared with prior art, the beneficial effect that is produced is:

1) this blackboard eraser is reasonable in design, simple in structure, inexpensive, convenient and practical.

2) the long and employing thread connection of control handle, cleaning not only for convenience detach can also make things convenient for the shorter academics and students of stature to wipe the more writing on the blackboard of high-order bit on the blackboard, avoids hand directly to touch a dirt, and the classroom is used clean convenient.

3) the square body design of backboard is convenient to wipe the dust in blackboard corner.

4) bristle adopts natural high quality cotton fiber, be convenient to clean, but xerotripsis, but wet rubbing has very strong adsorptivity, avoids dust to fly around, and sucks human body, avoids healthy.

5) bristle holder plate adopts the design of hollow out formula, is convenient to the fixing of bristle, prevents coming off of bristle, is convenient to long-term use.

(4) description of drawings

Accompanying drawing 1 is looked cross-sectional view for master of the present utility model;

Accompanying drawing 2 is the plan structure schematic diagram of Fig. 1.

Among the figure, 1, backboard, 2, guard shield, 3, bristle holder plate, 4, bristle, 5, control handle.

(5) specific embodiment

Below in conjunction with explaining below 1,2 pairs of a kind of blackboard erasers works of the present utility model of accompanying drawing.

Shown in accompanying

drawing

1,2, a kind of blackboard eraser of the present utility model, its structure comprises backboard 1, guard shield 2, bristle holder plate 3 and bristle 4, and backboard 1 is a rectangular structure, and backboard 1 and guard shield 2 can be split-type structurals, also can be integral structure.Bristle 4 is fixed on the bristle holder plate 3, guard shield 2 be arranged on backboard 1 around and form a semiclosed cavity that holds bristle holder plate 3 and bristle 4 with the lower surface of backboard 1, bristle holder plate 3 active card are located in this semiclosed cavity.The upper surface of backboard 1 is movably set with control handle 5 by screw thread.

Its processing and fabricating of a kind of blackboard eraser of the present utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.

Except that the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1. blackboard eraser, comprise backboard (1), guard shield (2), bristle holder plate (3) and bristle (4), it is characterized in that, bristle (4) is fixed on the bristle holder plate (3), guard shield (2) be arranged on backboard (1) around and form a semiclosed cavity that holds bristle holder plate (3) and bristle (4) with the lower surface of backboard (1), bristle holder plate (3) active card is located in this semiclosed cavity.

2. a kind of blackboard eraser according to claim 1 is characterized in that, backboard (1) and guard shield (2) are integral structure.

3. a kind of blackboard eraser according to claim 1 is characterized in that, backboard (1) is a rectangular structure.

4. a kind of blackboard eraser according to claim 1 is characterized in that, the upper surface of backboard (1) is movably set with control handle (5).

5. a kind of blackboard eraser according to claim 4 is characterized in that, is thread connection between backboard (1) and the control handle (5).