CN202623736U

CN202623736U - Device for erasing words on blackboard

Info

Publication number: CN202623736U
Application number: CN 201220230012
Authority: CN
Inventors: 金章祥; 杨小明
Original assignee: Huzhou University
Current assignee: Huzhou University
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-12-26
Anticipated expiration: 2022-05-22

Abstract

The utility model discloses a device for erasing words on a blackboard. The device is characterized by comprising the blackboard, wherein a guide rail is arranged on each of the left side and the right side of the blackboard; a sliding cross rod is supported on the guide rails; and an erasing plate is arranged on the sliding cross rod. Due to the movement of the sliding cross rod, words can be erased stably, chalk dust always falls in a direction, and raised dust is reduced. As a sliding groove is formed in the sliding cross rod, and the erasing plate is provided with a clamping part which is matched with the sliding groove, the erasing area of the erasing plate is changeable.

Description

Blackboard word erasing apparatus

Technical field

The utility model relates to a kind of erasing apparatus, relates in particular to a kind of blackboard eraser removal apparatus.

Background technology

In classroom instruction, blackboard eraser is the educational aid that can not lack, and blackboard eraser is when wiping the blackboard letter written with chalk, and it is slow that efficiency of erasing can appear in the hand held blackboard eraser, and chalk dust occurs kicking up when blackboard eraser moves back and forth, and endangers healthy.In the prior art, a lot of wiping blackboard structures of transforming occur, for example the blackboard eraser of subsidiary structure of dust collector can adsorb chalk dust, but the blackboard eraser band suction pipe, uses inconvenience, and operating noise is big, influences quality of instruction.

The utility model content

The utility model provides a kind of chalk dust airborne dust that can reduce for solving the prior art problem, improves blackboard word efficiency of erasing, and the adjustable blackboard eraser removal apparatus of erase area.

The technical scheme of the utility model is: a kind of blackboard word erasing apparatus, comprise blackboard, and the opposite side of described blackboard is equipped with guide rail, and putting on the shelf at described guide rail is provided with the slip cross bar, installs on the described slip cross bar and wipes plate.

As preferably, the mode of wiping plate is installed on the described slip cross bar is: offer sliding tray on the said slip cross bar, the described plate of wiping has the fastener that matches with described sliding tray.

As preferably, described sliding tray is the T word groove that is become by the guide rail head circumference, and the described fastener of wiping plate is the sliding part that has the protrusion head that matches with said T word groove, and the top of described sliding part also has guide head.

As preferably, on the described slip cross bar mode of wiping plate being installed is fixed form, and described length of wiping plate equals the length of blackboard.

As preferably, 5% ~ 50% of the length that described length of wiping plate is sliding tray.

As preferably, there is the texture that improves frictional force on described guide head surface.

In sum, the utlity model has following advantage:

1, the opposite side of blackboard is equipped with guide rail, and putting on the shelf at described guide rail is provided with the slip cross bar, and the motion of slip cross bar can make erasing move steady, and chalk dust always toward a direction landing, reduces airborne dust.

2, offer sliding tray on the said slip cross bar, the described plate of wiping has the fastener that matches with described sliding tray, makes that wiping the zone that blackboard eraser removes can change.

3, when the length of wiping plate be sliding tray length 5% ~ 50%, select can once wipe the half the of blackboard at 50% o'clock; When the length of wiping plate equals the length of blackboard, once can wipe the Zone Full of blackboard, improve efficiency of erasing.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A profile of the utility model under wiping plate and the slip cross bar cooperating;

Fig. 3 wipes the left view of plate for the utility model.

The specific embodiment

With embodiment the utility model is described further below.

A kind of blackboard word erasing apparatus is characterized in that: comprise blackboard 1, the opposite side of described blackboard 1 is equipped with guide rail 11 and 12, opposite side can refer to long limit to or broadside right, among the figure embodiment be broadside on guide rail 11 and 12 are installed.Described guide rail 11 and 12 is put on the shelf and is provided with slip cross bar 20, installs on the described slip cross bar 20 and wipes plate 30.The mode of wiping plate 30 is installed on the described slip cross bar 20 is: offer sliding tray 21 on the said slip cross bar 20, described sliding tray 21 is the T word grooves that surrounded by

guide rail head

22,23, and the described plate 30 of wiping has the fastener that matches with described sliding tray 21.The described fastener of wiping plate 30 is the sliding part 31 that has the protrusion that matches with said T word groove 34 and 35, and the top of described sliding part 31 also has guide head 33.There is cleaning portion 32 lower end of sliding part 31, and cleaning portion 32 can be brush or sponge or cotton etc.There is the texture that improves frictional force on described guide head 33 surfaces.The length of wiping plate 30 be sliding tray 21 length 5% ~ 50%.5% length can make wipes version and is used to wipe single file or single-row letter written with chalk, and 20% length can be wiped one exercise question or passage, and 50% length can realize once wiping the efficient of half block blackboard.On described slip cross bar 20, the mode of wiping plate 30 being installed is fixed form, and described length of wiping plate 30 selects to equal the length of blackboard 1, can once wipe a monoblock blackboard like this.

Claims

1. blackboard word erasing apparatus, it is characterized in that: comprise blackboard (1), the opposite side of described blackboard (1) is equipped with guide rail (11; 12); Putting on the shelf at described guide rail (11,12) is provided with slip cross bar (20), and described slip cross bar (20) is gone up to install and wiped plate (30).

2. according to the said blackboard word of claim 1 erasing apparatus; It is characterized in that: described slip cross bar (20) is upward installed the mode of wiping plate (30) and is: offer sliding tray (21) on the said slip cross bar (20), the described plate (30) of wiping has the fastener that matches with described sliding tray (21).

3. according to the said blackboard word of claim 2 erasing apparatus; It is characterized in that: described sliding tray (21) is by guide rail head (22; 23) the T word groove that surrounds; The described fastener of wiping plate (30) is the sliding part (31) that has the protrusion head (34,35) that matches with said T word groove, and the top of described sliding part (31) also has guide head (33).

4. according to the said blackboard word of claim 1 erasing apparatus, it is characterized in that: described slip cross bar (20) is gone up the mode of wiping plate (30) is installed is fixed form, and described length of wiping plate (30) equals the length of blackboard (1).

5. according to claim 2 or 3 said blackboard word erasing apparatus, it is characterized in that: 5% ~ 50% of the length that described length of wiping plate (30) is sliding tray (21).

6. according to the said blackboard word of claim 3 erasing apparatus, it is characterized in that: there is the texture that improves frictional force on described guide head (33) surface.