CN214449868U

CN214449868U - Electric blackboard eraser

Info

Publication number: CN214449868U
Application number: CN202120321086.3U
Authority: CN
Inventors: 李敏; 陈佑军
Original assignee: Qingdao Binhai University
Current assignee: Qingdao Binhai University
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-10-22
Anticipated expiration: 2031-02-04

Abstract

The utility model relates to a teaching aid technical field, in particular to blackboard eraser. An electric blackboard eraser comprises an eraser main body and a dust suction device arranged in the eraser main body. The eraser main body comprises: the blackboard eraser comprises a blackboard eraser frame, wherein the inner side of the blackboard eraser frame is sequentially provided with an eraser plate from bottom to top, the blackboard eraser frame is arranged on an ash guide plate on the upper side of the eraser plate, the ash collection bin is arranged on the upper side of the ash guide plate, a filter plate is arranged on the upper side of the ash collection bin, a press plate is arranged on the upper side of the filter plate, a fan mounting plate is arranged on the upper side of the press plate, a micro fan is arranged on the fan mounting plate, a top shell is arranged on the upper side of the fan mounting plate, and a vent is arranged on the top shell. And a power supply device is also arranged between the fan mounting plate and the top shell, and a switch is arranged on the eraser frame. The utility model discloses a technical scheme avoid cleaning the blackboard and raise the dust in the part collection that the blackboard process realized the dust, also avoid the dust to gather on the blackboard is cleaned, glue.

Description

Electric blackboard eraser

Technical Field

The utility model relates to a teaching aid technical field, in particular to blackboard eraser.

Background

In the teaching process, teachers often need to write on blackboard, and especially in the mathematical teaching, many teachers write on a lot of contents in a class, so that a blackboard needs to be erased frequently, and if the blackboard eraser is not cleaned in time, the phenomena of incomplete erasing, slipping during writing on the blackboard and the like can occur, so that the blackboard writing quality and the mood of the teachers are affected greatly. In addition, also there are many people to use wet cloth or blackboard eraser dip in water and use, but under this condition, if the blackboard writing is very fast, the speed that the blackboard dries can not follow the speed of using to write again, and in addition, after using for a long time, the dust has more still can be very dirty, at first influences the definition of writing, and secondly, writes to skid and can produce the sound of dazzling, is unfavorable for giving lessons.

On the other hand, the current blackboard eraser generates a large amount of dust during the process of erasing the blackboard, and the dust seriously harms the physical health of teachers and front-row students. Generally, people can see that clothes and hair of some teachers are stained with a large amount of chalk dust every time the teachers leave class, and hands of the teachers are more obvious.

SUMMERY OF THE UTILITY MODEL

The utility model provides an electric blackboard eraser, convenient to use can absorb the dust that the blackboard in-process produced. In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electric blackboard eraser comprises an eraser main body and a dust suction device arranged in the eraser main body.

Specifically, the eraser main body comprises: the blackboard eraser comprises a blackboard eraser frame, wherein an eraser plate is sequentially arranged in the blackboard eraser frame from bottom to top, the eraser plate is arranged on an ash guide plate on the upper side of the eraser plate, the ash collection bin is arranged on the upper side of the ash guide plate, a filter plate is arranged on the upper side of the ash collection bin, a pressing plate is arranged on the upper side of the filter plate, a fan mounting plate is arranged on the upper side of the pressing plate, a micro fan is arranged on the fan mounting plate, a top shell is arranged on the upper side of the fan mounting plate, and a ventilation opening is formed in the top shell. And a power supply device is also arranged between the fan mounting plate and the top shell, and a switch is arranged on the eraser frame.

The upper side surface of the eraser plate is matched and tightly attached with the lower surface of the ash guide plate, and an inner space formed by the upper surface of the ash guide plate, the lower surface of the filter plate and the inner side surface of the eraser frame is an ash collecting bin. The filter plate is attached to the pressing plate, a distance is reserved between the fan mounting plate and the filter plate, and a distance is reserved between the fan mounting plate and the top shell.

The power supply device supplies power to the micro fan, and the switch is used for starting and stopping the micro fan.

The wiping plate is fixed with a plurality of rows of brushes or a plurality of rows of wiping cloths, and a small dust inlet hole is arranged between each row of brushes and the wiping cloths. Preferably, the small dust inlet holes can be arranged at intervals, and an extremely narrow strip-shaped small dust inlet hole can also be arranged between two adjacent rows of brushes.

Lead the hawk and be the cuboid platelike with the matched with fixed of blackboard eraser frame, the downside surface of leading the hawk is provided with rectangular recess, the setting of rectangular recess cooperatees with rectangular form little dust feeding hole, leads the hawk lower surface and wipes the laminating of board upper surface. And a second ash inlet hole is formed in one end of the long strip groove.

One side of the ash collecting bin is provided with an ash outlet which can be opened and closed. Specifically, the blackboard eraser frame is opened at a position corresponding to the dust collecting bin to be opened and closed, and the opening and closing device is used for realizing the normal opening and the normal closing of the blackboard eraser frame. The opening and closing device comprises a sealing block with one end rotatably connected with the blackboard eraser frame through a pin, and the other end is connected through a pressing type buckling device.

The filter plate comprises a square aluminum frame and filter cloth arranged on the square aluminum frame.

The rear side of the filter plate is provided with a pressure plate, and small holes are arranged on the pressure plate at intervals.

The clamp plate upside sets up the fan mounting panel, is provided with the fan mounting hole on the fan mounting panel for install the fan.

Furthermore, four side surfaces of the eraser plate, the ash guide plate, the filter plate, the pressing plate and the fan mounting plate are tightly matched with the eraser frame and are fixed with the eraser frame through a fixing structure. The fixing structure comprises a buckle, a clamping groove and the like.

The preferred scheme can also be that a plurality of fixed frames welded or screwed with the blackboard eraser frame are arranged on the inner side of the blackboard eraser frame from bottom to top and are connected with the blackboard eraser, the ash guide plate, the filter plate, the pressure plate and the fan mounting plate through screws. The areas of the middle hole parts of the plurality of fixed frames are gradually reduced from bottom to top so as to facilitate the fixation of each plate.

Furthermore, a fence is arranged on the periphery of the brush of the blackboard eraser, and the fence can be made of soft thin rubber or other flexible materials, so that a relatively sealed space can be formed around the brush of the blackboard eraser when the blackboard eraser is used for erasing a blackboard. The thickness of the fence is smaller than the length of the brush, so that the brush head is positioned outside the fence when the blackboard eraser works, and the blackboard eraser is not influenced.

Furthermore, the power supply device is preferably a lithium battery, the battery capacity can be controlled to be about 2200mAh, a charging interface is arranged on the eraser frame and is connected with the battery, and the size of the micro fan is not more than 30 x 15 mm.

Further preferably, the number of the micro fans may be 1 to 3.

Furthermore, the blackboard eraser frame can be provided with a hook, so that the blackboard eraser frame can be conveniently hung on a blackboard when not used, and the arrangement of the hook does not obstruct the holding of the blackboard eraser.

The utility model discloses a technical scheme be at the blackboard in-process starting switch that wipes, micro fan rotates and produces suction, and the chalk dust that produces at the blackboard in-process of wiping gets into rectangular recess by advancing the grey board for a short time under the effect of suction, then advances the ash hole through the second and get into collection ash bin, just can realize the part collection of dust, avoids wiping the blackboard and raises the dust, also avoids the dust to gather on the blackboard is wiped, glue. The other side of the dust collection bin is provided with a filter plate for ventilating air to generate suction force and preventing large-particle chalk dust from flying out, in order to limit the position of filter cloth, a press plate is arranged, a plurality of groups of holes are formed in the press plate, and the holes are arranged to be fully distributed in the opposite positions of the whole filter cloth. The utility model provides an ash collecting bin can be the inner space that the medial surface of leading the upper surface of hawk, the lower surface of filter plate and blackboard eraser frame is constituteed. The technical scheme provided by the utility model can protect mr and front row student not receive the chalk dust puzzlement effectively. Under the high strength use, can guarantee that two days charge once, it is comparatively convenient to use.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the fan mounting plate according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a pressing plate according to an embodiment of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

Specifically, the eraser main body comprises: blackboard eraser frame 1, 1 inboard supreme wiping board 2 of having set gradually is down followed to blackboard eraser frame, sets up in wiping the ash guide plate 3 of 2 upsides of board, sets up in the collection ash storehouse 4 of leading the 3 upsides of ash guide plate, the upside in collection ash storehouse 4 is provided with filter plate 5, 5 upsides in the filter plate are provided with

clamp plate

6, 6 upsides in the clamp plate are provided with fan mounting panel 7, be provided with micro-fan 8 on the fan mounting panel 7, 8 upsides in the fan mounting panel are provided with top shell 9, be provided with vent 10 on the top shell 9. A power supply device is further arranged between the fan mounting plate 8 and the top shell 9, and a switch 11 is arranged on the eraser frame 1.

The wiping board 1 is fixed with a plurality of rows of brushes or a plurality of rows of wiping cloths, and a small dust inlet hole is arranged between each row of brushes and the wiping cloths. Preferably, the small dust inlet holes can be arranged at intervals, and an extremely narrow strip-shaped small dust inlet hole can also be arranged between two adjacent rows of brushes.

Lead hawk 3 for with the matched with fixed cuboid platelike of blackboard eraser frame, the downside surface of leading hawk 3 is provided with rectangular recess, the setting of rectangular recess cooperatees with rectangular form little dust inlet hole, lead 3 lower surfaces of hawk and wipe 2 upper surfaces of board laminating. And a second ash inlet hole is formed in one end of the long strip groove.

One side of the dust collecting bin 4 is provided with a dust outlet 12, and the dust outlet 12 can be opened and closed. Specifically, the blackboard eraser frame is opened at a position corresponding to the dust collecting bin to be opened and closed, and the opening and closing device is used for realizing the normal opening and the normal closing of the blackboard eraser frame. The opening and closing device comprises a sealing block with one end rotatably connected with the blackboard eraser frame through a pin, and the other end is connected through a pressing type buckling device.

The filter plate 5 comprises a square aluminum frame and filter cloth arranged on the square aluminum frame.

The rear side of the filter plate is provided with a pressure plate 6, and the pressure plate 6 is provided with small holes 14 at intervals.

The clamp plate 6 upside sets up fan mounting panel 7, is provided with the fan mounting hole on the fan mounting panel 7 for install micro-fan 8.

The four side surfaces of the eraser plate 2, the ash guide plate 3, the filter plate 5, the pressing plate 6 and the fan mounting plate 7 are all tightly matched with the eraser frame 1 and are fixed with the eraser frame through a fixing structure. The fixing structure comprises a buckle, a clamping groove and the like.

From bottom to top, a plurality of fixed frames welded or screwed with the eraser frame are arranged on the inner side of the eraser frame and are connected with the eraser plate 2, the ash guide plate 3, the filter plate 5, the pressure plate 6 and the fan mounting plate 7 through screws. The areas of the middle hole parts of the plurality of fixed frames are gradually reduced from bottom to top so as to facilitate the fixation of each plate.

The periphery of the brush of the blackboard eraser 2 is provided with a fence, the fence can be made of soft thin rubber or other flexible materials, and the purpose is to form a relatively sealed space around the brush of the blackboard eraser when the blackboard eraser is used for erasing a blackboard.

The power supply device is a lithium battery, the battery capacity can be controlled to be about 2200mAh, the eraser frame is provided with a charging interface 13, the charging interface 13 is connected with the battery, and the size of the micro fan is not more than 30 x 15 mm.

The number of the micro fans can be 2.

To sum up, the utility model discloses a technical scheme just can realize the part collection of dust at the blackboard in-process starting switch of wiping, avoids wiping the blackboard and raises the dust, also avoids the dust to gather on the blackboard is wiped, glues and glue. The teacher and the front row students can be effectively protected from being puzzled by chalk dust. Under the high strength use, can guarantee that two days charge once, it is comparatively convenient to use.

Claims

1. An electric blackboard eraser comprises an eraser main body and a dust suction device arranged in the eraser main body, and is characterized in that: the eraser main body comprises: the blackboard eraser comprises a blackboard eraser frame, wherein an eraser plate is sequentially arranged in the blackboard eraser frame from bottom to top, the eraser plate is arranged on an ash guide plate on the upper side of the eraser plate, the ash collection bin is arranged on the upper side of the ash guide plate, a filter plate is arranged on the upper side of the ash collection bin, a pressing plate is arranged on the upper side of the filter plate, a fan mounting plate is arranged on the upper side of the pressing plate, a micro fan is arranged on the fan mounting plate, a top shell is arranged on the upper side of the fan mounting plate, a ventilation opening is formed in the top shell, a power supply device is further arranged between the fan mounting plate and the top shell, and a switch is arranged on the blackboard eraser frame.

2. The electric blackboard eraser according to claim 1, wherein: the wiping plate is fixed with a plurality of rows of brushes or a plurality of rows of wiping cloths, and a small dust inlet hole is arranged between each row of brushes and the wiping cloths.

3. The electric blackboard eraser according to claim 2, wherein: the small ash inlet holes are arranged at intervals.

4. The electric blackboard eraser according to claim 2, wherein: lead the hawk for with the matched with fixed cuboid platelike of blackboard eraser frame, the downside surface of leading the hawk is provided with rectangular recess, the setting of rectangular recess matches with rectangular form little ash hole that advances, leads the hawk lower surface and wipes the laminating of board upper surface, the one end of rectangular recess is provided with the second and advances the ash hole.

5. The electric blackboard eraser according to claim 2, wherein: one side of the ash collecting bin is provided with an ash outlet which can be opened and closed.

6. The electric blackboard eraser according to claim 2, wherein: the filter plate comprises a square aluminum frame and filter cloth arranged on the square aluminum frame.

7. The electric blackboard eraser according to claim 2, wherein: the pressing plate is provided with small holes at intervals.

8. The electric blackboard eraser according to claim 1, wherein: the four side surfaces of the eraser plate, the ash guide plate, the filter plate, the pressing plate and the fan mounting plate are all tightly matched with the eraser frame and are fixed with the eraser frame through a fixing structure.

9. The electric blackboard eraser according to claim 1, wherein: the periphery of the brush of the wiping plate is provided with a fence which is made of soft thin rubber.

10. The electric blackboard eraser according to claim 1, wherein: the power supply device is a lithium battery, the battery capacity is 2200mAh, a charging interface is arranged on the blackboard eraser frame, and the charging interface is connected with the battery.