CN201494193U

CN201494193U - dust-proof blackboard eraser

Info

Publication number: CN201494193U
Application number: CN200920226409XU
Authority: CN
Inventors: 李云英; 王悦兴
Original assignee: Shandong Vocational College of Science and Technology
Current assignee: Shandong Vocational College of Science and Technology
Priority date: 2009-09-10
Filing date: 2009-09-10
Publication date: 2010-06-02
Anticipated expiration: 2019-09-10

Abstract

The utility model discloses a dust-proof blackboard eraser, which comprises a sealing cover with an opening at the bottom, wherein a sponge body is contained in an inner cavity of the sealing cover, a water injection port is arranged on the top of the sealing cover, a water penetrating plate is installed at the bottom of the sealing cover in a sliding mode, four supporting bars are respectively and fixedly installed on four corners of the water penetrating plate, sliding rollers are installed between lower ends of the two supporting bars on the same side, wiping cloth is wrapped outside two sliding rollers, the water penetrating plate is installed on the top portions of the four supporting bars, and a plurality of water penetrating holes are arranged on the water penetrating plate. When the blackboard needs wiping, the wet wiping cloth can be used to wipe the blackboard, falling dust can be conglutinated on the wiping cloth, the wiping cloth can roll under the drive of the sliding rollers, the wet surface of the blackboard eraser can be used to wipe the blackboard, little water left on the blackboard can vaporize rapidly, which does not affect normal use of the blackboard, and the wiping cloth can be flushed after use to guarantee cleanness. The dust-proof blackboard eraser has simple structure, prevents the phenomena that dust pollutes the air environment, and is beneficial for health of teachers and students.

Description

A kind of dust-proof blackboard eraser

Technical field

The utility model relates to a kind of school supply and stationery, specifically is that letter written with chalk prevents that dust from disorderly flying the dust-proof blackboard eraser of phenomenon on a kind of erasing blackboard.

Background technology

At present, blackboard is still the requisite educational aid of classroom instruction.Employed blackboard eraser comprises plank in the school, is fixed with the panniform bristle on the plank.During use, the letter written with chalk on the blackboard is wiped in hand-held blackboard eraser wiping repeatedly on blackboard.Chalk dust under this blackboard eraser 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.

The utility model content

The technical problems to be solved in the utility model provides letter written with chalk on a kind of erasing blackboard and prevents that dust from disorderly flying the dust-proof blackboard eraser of phenomenon.

For addressing the above problem, the dust-proof blackboard eraser that is provided, comprise the capping of bottom opening, its design feature is: in the inner chamber of described capping cavernous body is housed, the top of capping is provided with water filling port, closure base portion is slidingly fitted with porous disc, four bights of porous disc are fixed with four poles respectively, between two pole lower ends of homonymy slide roller are housed, and two slide roller are wrapped up in outward cleaning wiping cloth is housed, porous disc is equipped with at the top of four poles, and porous disc is provided with a plurality of permeable holes.

After adopting said structure, owing in the inner chamber of capping cavernous body is housed, the top of capping is provided with water filling port, closure base portion is slidingly fitted with porous disc, four bights of porous disc are fixed with four poles respectively, between two pole lower ends of homonymy, slide roller is housed, two slide roller are wrapped up in outward cleaning wiping cloth are housed, porous disc is equipped with at the top of four poles, porous disc is provided with a plurality of permeable holes, in the time of need erasing the board, inject an amount of water to cavernous body in the Automatic water-filling mouth, porous disc extruding cavernous body can be distributed in water droplet on the cleaning wiping cloth uniformly, can erase the board by wet cleaning wiping cloth, the dust that falls can stick on the cleaning wiping cloth, cleaning wiping cloth can be rolled under the ordering about of slide roller, uses its wet one side to erase the board, and loses the minor amount of water branch that falls on the blackboard and evaporates rapidly, do not influence the normal use of blackboard, it is clean and tidy to guarantee it to wash cleaning wiping cloth after using.The utility model is simple in structure, and the phenomenon of dust pollution air ambient is no longer taken place, and helps the health of Faculty and Students.

Be slidingly mounted on a kind of specific constructive form in the capping as porous disc, the bottom of described capping four limit walls is respectively equipped with spacing frid, and porous disc is installed in the top of spacing frid and can slides up and down along the Si Bianbi of capping.

As improvement of the present utility model, be packed in the upper rack posts on the porous disc bottom surface described pole comprising, with the lower fulcrum bar that the outer end of slide roller is connected, link together by spring between upper rack posts and the lower fulcrum bar, be provided with connecting rod between the two adjacent lower connecting rods.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described:

The structural representation that Fig. 1 analyses and observe for the utility model;

Fig. 2 be among Fig. 1 A-A to structural representation.

The specific embodiment

Dust-proof blackboard eraser as depicted in figs. 1 and 2, it comprises the capping 1 of bottom opening, and cavernous body 3 is housed in the inner chamber of described capping 1, and the top of capping 1 is provided with water filling port 6, and when not using, water filling port 6 is by top seal.Capping 1 basal sliding is equipped with porous disc 4, four bights of porous disc 4 are fixed with four poles 9 respectively, slide roller 2, two slide roller 2 outer wrapping up in are housed between two poles, 9 lower ends of homonymy cleaning wiping cloth 7 is housed, porous disc 4 is equipped with at the top of four poles 9, and porous disc 4 is provided with a plurality of permeable holes 8.The bottom of capping 1 four limit walls is respectively equipped with spacing frid 5, and porous disc 4 is installed in the top of spacing frid 5 and can slides up and down along the Si Bianbi of capping 1.Pole 9 comprises the upper rack posts 9-1 that is packed on porous disc 4 bottom surfaces, the lower fulcrum bar 9-2 that is connected with the outer end of slide roller 2, link together by spring 9-3 between upper rack posts 9-1 and the lower fulcrum bar 9-2,, can between two adjacent lower fulcrum bar 9-2, be provided with connecting rod 10 for guaranteeing the stability of pole 9.

Claims

1. dust-proof blackboard eraser, comprise the capping (1) of bottom opening, it is characterized in that: cavernous body (3) is housed in the inner chamber of described capping (1), the top of capping (1) is provided with water filling port (6), capping (1) basal sliding is equipped with porous disc (4), four bights of porous disc (4) are fixed with four poles (9) respectively, between two poles (1) lower end of homonymy, slide roller (2) is housed, outer the wrapping up in of two slide roller (2) is equipped with cleaning wiping cloth (7), porous disc (4) is equipped with at the top of four poles (1), and porous disc (4) is provided with a plurality of permeable holes (8).

2. dust-proof blackboard eraser according to claim 1 is characterized in that: the bottom of described capping (1) four limit wall is respectively equipped with spacing frid (5), and porous disc (4) is installed in the top of spacing frid (5) and can slides up and down along the Si Bianbi of capping (1).

3. dust-proof blackboard eraser according to claim 1 and 2, it is characterized in that: described pole (9) comprises the upper rack posts (9-1) that is packed on porous disc (4) bottom surface, the lower fulcrum bar (9-2) that is connected with the outer end of slide roller (2), link together by spring (9-3) between upper rack posts (9-1) and the lower fulcrum bar (9-2), be provided with connecting rod (10) between adjacent two lower connecting rods (9-2).