CN202847261U

CN202847261U - Stretchable dry-and-wet blackboard eraser

Info

Publication number: CN202847261U
Application number: CN 201220540630
Authority: CN
Inventors: 刘维倩; 陈艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-22
Filing date: 2012-10-22
Publication date: 2013-04-03
Anticipated expiration: 2022-10-22

Abstract

The utility model relates to a stretchable dry-and-wet blackboard eraser which comprises a shell body. The shell body is composed of an upper shell body and a lower shell body. A wet sponge is arranged in the upper shell body and a dry sponge is arranged in the lower shell body. A magnetic iron is arranged between the upper shell body and the lower shell body. The magnetic property of the magnetic iron is opposite to the magnetic property of a blackboard. A fixing rod is arranged on the back face of the shell body. The fixing rod is connected with a handle through screw spikes. The stretchable dry-and-wet blackboard eraser is capable of meeting requirements for cleaning the blackboard of students with different heights. Meanwhile, the wet sponge plays a role in dust prevention and the dry sponge is capable of drying the blackboard. A teacher is enabled to write continuously. The magnetic iron is capable of enabling the blackboard eraser to be sucked on the blackboard. The students can clean the blackboard easily and lose of the blackboard eraser is avoided as well.

Description

The telescopic blackboard eraser that wets of doing

Technical field

The utility model relates to a kind of blackboard eraser, relates in particular to a kind of telescopic wet blackboard eraser of doing.

Background technology

Ash-collecting blackboard eraser has been arranged at present, but expensive, not too be fit to school and generally use.And now sponge and the housing in the blackboard eraser used of school connects together, and blackboard eraser is used the chalk dust on the sponge of a specified duration and is difficult to be used for erasing the board except totally again, can stay thick chalk dust on the blackboard, and the word that teacher is write thickens.Teacher also often the situation that blackboard eraser can not find can occur at school the time, and this has affected the progress of giving a lesson.Simultaneously, the not high student of some height is when erasing the board, and the first half is difficult to clip, if the upper chair of pad is wiped again, may cause danger.

The utility model content

For above-mentioned shortcoming, the utility model provide a kind of easy to use and can prevent dust telescopicly do wet blackboard eraser.

A kind of telescopic wet blackboard eraser of doing comprises housing, and described housing is divided into upper shell and lower house, and wet sponge is housed in upper shell, and dried sponge is housed in lower house, between upper shell and the lower house magnet is housed, and the magnetic of magnet is opposite with the magnetic of blackboard; Fixed bar is equipped with at the back side of described housing, and fixed bar is connected by screw with handle.

Wet sponge described above can be pulled down in upper shell, and dried sponge can be pulled down in lower house.

Handle described above can turn at the plane internal rotation perpendicular to back side of shell 180 °.

Handle described above is expansion link.

Magnet coated outside described above has waterproof cloth.

Compared with prior art, the utility model provides a kind of telescopic wet blackboard eraser of doing, and by regulating handle, can satisfy the needs that the student of different heights erases the board, simultaneously, wet sponge has played dustproof effect, and dried sponge again can be with water stain the drying on the blackboard, and teacher can continue to write, magnet can also be inhaled blackboard eraser on blackboard, the student is erased the board become easily, the time spent does not prevent losing of blackboard eraser just with the corner of blackboard eraser suction at blackboard at ordinary times.

Description of drawings

Fig. 1 is the telescopic structural representation of doing wet blackboard eraser of the present utility model.

Fig. 2 is the telescopic front view of doing wet blackboard eraser of the present utility model.

Among the figure: 1, housing, 2, upper shell, 3, lower house, 4, wet sponge, 5, dried sponge, 6, magnet, 7, fixed bar, 8, handle, 9, screw.

The specific embodiment

Embodiment 1

The present embodiment provides a kind of telescopic wet blackboard eraser of doing, and comprises housing 1, and described housing is divided into upper shell 2 and lower house 3, wet sponge 4 is housed in upper shell 2, dried sponge 5 is housed in lower house 3, between upper shell 2 and lower casing 3 bodies magnet 6 is housed, the magnetic of magnet 6 is opposite with the magnetic of blackboard; Fixed bar 7 is equipped with at the back side of described housing 1, and fixed bar 7 is connected by screw 9 with handle 8.

During concrete the use, first handle 8 is adjusted to suitable length, the position with blackboard eraser is inhaled the letter written with chalk of wiping at needs by magnet 6 makes wet sponge 4 touch first letter written with chalk, touches letter written with chalk behind the dried sponge 5, holds handle 8, begins to erase the board.After wiping blackboard, inhale blackboard eraser for subsequent use in the corner of blackboard.After blackboard eraser has been used a period of time, take off wet sponge 4 and dried sponge 5, after cleaning up dried sponge 5 is dried, then put into upper shell 2 and lower house 3 continuation uses.

The utility model is made simple, and is easy to use, can prevent flying upward of dust in the classroom, also can avoid losing of blackboard eraser, can also guarantee the safety of short person student when erasing the board.

In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. telescopicly do wet blackboard eraser for one kind, comprise housing (1), it is characterized in that: described housing (1) is divided into upper shell (2) and lower house (3), wet sponge (4) is housed in upper shell (2), dried sponge (5) is housed in lower house (3), between upper shell (2) and the lower house (3) magnet (6) is housed, the magnetic of magnet (6) is opposite with the magnetic of blackboard; Fixed bar (7) is equipped with at the back side of described housing (1), and fixed bar (7) is connected by screw (9) with handle (8).

2. the telescopic wet blackboard eraser of doing according to claim 1, it is characterized in that: described wet sponge (4) can be pulled down in upper shell (2), and dried sponge (5) can be pulled down in lower house (3).

3. the telescopic wet blackboard eraser of doing according to claim 1, it is characterized in that: described handle (8) can turn 180 ° at the plane internal rotation perpendicular to housing (1) back side.

4. the telescopic wet blackboard eraser of doing according to claim 1, it is characterized in that: described handle (8) is expansion link.

5. the telescopic wet blackboard eraser of doing according to claim 1, it is characterized in that: described magnet (6) coated outside has waterproof cloth.