CN111731015A

CN111731015A - Blackboard eraser with dust collection function

Info

Publication number: CN111731015A
Application number: CN202010582172.XA
Authority: CN
Inventors: 刘芯
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-10-02

Abstract

The invention relates to the technical field of teaching tools and discloses a blackboard eraser with a dust collection function, which comprises an outer frame, wherein a handheld device is movably connected below the outer frame, a dust collection box is movably connected inside the outer frame, a dust collection port is formed below the dust collection box, a shifting piece is movably connected inside the dust collection port, a movable spring is movably connected inside the shifting piece, a rotating roller is movably connected below the dust collection box, a brush is movably connected outside the rotating roller, a rotating shaft is movably connected inside the rotating roller, and a limiting strip is movably connected outside the rotating shaft. This blackboard eraser with collection dirt function through hand device and frame swing joint, and hand device can rotate wantonly on the frame, each dead angle of clean blackboard that like this can be convenient, and the both sides of dust absorption mouth are circular-arc, can press close to the outside brush of commentaries on classics roller, make inside the more complete entering dust collection box of chalk dust, more thorough when clearing up chalk dust like this.

Description

Blackboard eraser with dust collection function

Technical Field

The invention relates to the technical field of teaching tools, in particular to a blackboard eraser with a dust collection function.

Background

In the teaching process, teachers need a large amount of blackboard writing, so the blackboard eraser is an essential tool on a platform of a classroom, a large amount of chalk dust can be generated in the using process of the blackboard eraser, even if a plurality of dustless chalks exist at present, the blackboard eraser is only limited to be used by teachers to reduce chalk dust, and the chalk dust cannot be prevented from falling everywhere in the erasing process.

Chalk dust that drifts around not only pollutes the air circumstance in the classroom, still seriously influences healthily after being inhaled for a long time by mr and classmate, arouse the infection and the lung infection of respiratory track, bring very big injury for the health, chalk dust drifts in the air simultaneously, fall on the ground, influence the health on ground, still can depend on student and mr's clothes, cause untidy phenomenon, and if not in time clear up the blackboard eraser, the cleanliness is low when erasing the blackboard like this, the blackboard writing of being not convenient for.

Therefore, the blackboard eraser with the dust collection function has the advantages that the rotating shaft is used for driving the rotating roller to rotate, the brushes uniformly distributed outside the rotating roller can wipe chalk marks on a blackboard, then dust is collected from the dust collection port through the rotation of the roller and enters the dust collection box, the blackboard eraser with the dust collection function is convenient to use, clean, convenient to write on a blackboard and capable of preventing dust from scattering, and a comfortable and healthy working and learning atmosphere is created for students and teachers.

Disclosure of Invention

Technical scheme (I)

In order to realize the purposes of convenient use, clean wiping, convenient writing on a blackboard, dust flying prevention and creation of comfortable and healthy working and learning atmosphere for students and teachers, the invention provides the following technical scheme: the utility model provides a blackboard eraser with collection dirt function, includes the frame, the below swing joint of frame has hand-held device, the inside swing joint of frame has the dust collection box, the dust absorption mouth has been seted up to the below of dust collection box, the inside swing joint of dust absorption mouth has the plectrum, the inside swing joint of plectrum has the activity spring, the below swing joint of dust collection box has the roller, the outside swing joint of roller has the brush, the inside swing joint of roller has the pivot, the outside swing joint of pivot has spacing, the both ends swing joint of spacing has the stopper, the right side swing joint of stopper has buffer spring, buffer spring's right side swing joint has the bolt.

Preferably, the axis of the handheld device is perpendicular to the outer frame, the handheld device is cylindrical, so that dead corners or high positions can be cleaned conveniently when the blackboard is cleaned, chalk dust is prevented from being stained on the hand, and the bottom of the outer frame is slightly higher than the brush, so that the phenomenon that the chalk dust floats around in the rotating process of the brush cannot occur.

Preferably, the poking sheets are in contact with the hairbrush and positioned above the hairbrush, and the four poking sheets are total and can poke the hairbrush, so that chalk dust on the hairbrush enters the dust collection box from the dust collection port, and the device can be wiped more cleanly in the process of wiping the blackboard.

Preferably, the roller is a cylinder with one third of the remaining part cut off, so that the contact area of the device and the blackboard can be increased, the wiping is cleaner, the number of the rollers is four, the four rollers are parallel, and the brushes are uniformly distributed outside the rollers and are in the shape of inverted triangles.

Preferably, the limiting strip is a circular ring with a radius slightly larger than the rotating shaft, the limiting blocks are sleeved on two sides of the limiting strip and are symmetrically distributed, and the rotating shaft and the limiting strip are on the same axis.

Preferably, the buffer spring is sleeved outside the rotating shaft and is located between the limiting block and the bolt.

Preferably, the rotating shafts and the rotating rollers are coaxial, so that the number of the rotating shafts is four, and the four rotating shafts are parallel.

Preferably, the two sides of the dust suction port are arc-shaped, and the dust suction port can be close to the brush outside the rotary roller, so that chalk dust can enter the dust collection box more completely.

(II) advantageous effects

Compared with the prior art, the invention provides a blackboard eraser with a dust collection function, which has the following beneficial effects:

1. this blackboard eraser with collection dirt function through hand device and frame swing joint, and hand device can rotate wantonly on the frame, each dead angle of clean blackboard that like this can be convenient, and simultaneously, the both sides of dust absorption mouth are circular-arc, can press close to the outside brush of commentaries on classics roller, make inside the more complete entering dust collection box of chalk dust, more thoroughly when clearing up chalk dust like this.

2. This blackboard eraser with collection dirt function, through when the bottom of frame and blackboard contact, remove hand-held device, at this moment, the thrust that the hand produced can drive the frame and remove, the inside pivot of frame rotates with the commentaries on classics roller, the outside evenly distributed's of commentaries on classics roller brush also rotates along with changeing the roller, at this moment the brush can clean the chalk mark on the blackboard, when the brush that is infected with the chalk dust is through the dust absorption mouth, the chalk dust can get into the dust collection box, account for remaining chalk dust on the brush when the process plectrum, the plectrum can adsorb the chalk dust and get into the dust collection box, but like this the brush rotates again when contacting with the blackboard, it is cleaner to clean, can bring and build a comfortable, healthy work and study atmosphere for student and teacher.

3. The bottom of the outer frame of the blackboard eraser with the dust collection function is slightly higher than the brush, so that the phenomenon that chalk dust floats around can be avoided in the rotating process of the brush, and the chalk dust is prevented from being sucked to cause infection.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic view of the main structure of the present invention;

fig. 3 is a schematic view of the position structure of the outer frame and the handheld device of the present invention.

In the figure: 1. an outer frame; 2. a handheld device; 3. a dust collection box; 4. a dust suction port; 5. a shifting sheet; 6. a movable spring; 7. rotating the roller; 8. a brush; 9. a rotating shaft; 10. a limiting strip; 11. a limiting block; 12. a buffer spring; 13. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, a blackboard eraser with a dust collecting function includes an outer frame 1, and is characterized in that: frame 1's below swing joint has hand-held device 2, frame 1's inside swing joint has dust collection box 3, dust absorption mouth 4 has been seted up to dust collection box 3's below, dust absorption mouth 4's inside swing joint has plectrum 5, plectrum 5's inside swing joint has activity spring 6, dust collection box 3's below swing joint has roller 7, roller 7's outside swing joint has brush 8, roller 7's inside swing joint has pivot 9, pivot 9's outside swing joint has spacing 10, spacing 10's both ends swing joint has stopper 11, stopper 11's right side swing joint has buffer spring 12, buffer spring 12's right side swing joint has bolt 13.

The axis of the handheld device 2 is perpendicular to the outer frame 1, the handheld device 2 is cylindrical, so that dead corners or high positions can be cleaned conveniently when the blackboard is cleaned, chalk dust is prevented from being stained on the hand, and the bottom of the outer frame 1 is slightly higher than the brush 8, so that the phenomenon that the chalk dust floats around cannot occur in the rotating process of the brush 8.

The poking sheet 5 is in contact with the hairbrush 8, the poking sheet 5 is positioned above the hairbrush 8, the four poking sheets 5 are total, the hairbrush 8 can be poked by the poking sheet 5, and chalk dust on the hairbrush 8 enters the dust collection box 3 from the dust collection port 4, so that the device can be used for cleaning a blackboard more cleanly.

The roller 7 is a cylinder with one third of the remaining part cut off, so that the contact area of the device and the blackboard can be increased, the wiping is cleaner, the roller 7 is four in total, the four rollers 7 are parallel, the brushes 8 are uniformly distributed outside the rollers 7, and the brushes 8 are in the shape of inverted triangles.

Spacing 10 is a radius slightly is greater than the ring of pivot 9, and stopper 11 cup joints the both sides at spacing 10, and the stopper 11 of both sides is the symmetric distribution, avoids pivot 9 to appear damaged when driving and changeing the rotation of roller 7, influences the live time of the device, and pivot 9 is same axis with spacing 10.

The buffer spring 12 is sleeved outside the rotating shaft 9, and the buffer spring 12 is located between the limiting block 11 and the bolt 13 and plays a role in buffering the rotating roller 7.

The rotating shafts 9 and the rotating rollers 7 are on the same axis, so that the number of the rotating shafts 9 is four, the four rotating shafts 9 are parallel, the rotating shafts rotate simultaneously, and the working efficiency is higher.

The two sides of the dust collection port 4 are arc-shaped and can be close to the brush 8 outside the rotating roller 7, so that chalk dust can enter the dust collection box 3 more completely.

Referring to fig. 1 to 3, the blackboard eraser with a dust collecting function solves the problems that the chalk dust falling around pollutes the air environment in a classroom, and after being inhaled by teachers and classmates for a long time, the chalk dust seriously affects the health of the teachers and causes respiratory tract infection and lung infection and brings great harm to the bodies, meanwhile, the chalk dust falls on the air and affects the sanitation of the ground, and the chalk dust is attached to the clothes of the students and the teachers to cause untidy phenomenon, and if the blackboard eraser is not cleaned in time, the blackboard eraser is low in cleanliness and inconvenient for writing on a blackboard, and has the advantages of convenience in use, cleanness and convenience in writing on a blackboard, prevention of dust scattering, and creation of a comfortable and healthy working and learning atmosphere for the students and teachers.

When using,

handheld device

2 and 1 swing joint of frame, handheld device 2 can rotate wantonly on frame 1, when the bottom of frame 1 and blackboard contact, remove handheld device 2, at this moment, the thrust that the hand produced can drive frame 1 and remove, 1 inside pivot 9 of frame and commentaries on classics roller 7 rotate, 7 outside evenly distributed's of commentaries on classics roller brush 8 also rotates along with commentaries on classics roller 7, at this moment brush 8 can clean the chalk mark on the blackboard, when brush 8 process dust absorption mouth 4 of being infected with chalk dust, chalk dust can get into dust collection box 3, account for attaching remaining chalk dust on brush 8 when passing through plectrum 5, plectrum 5 can adsorb the chalk dust and get into dust collection box 3, but like this brush 8 rotates again when contacting with the blackboard, it is cleaner to clean.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a blackboard eraser with collection dirt function, includes frame (1), its characterized in that: a hand-held device (2) is movably connected below the outer frame (1), a dust collection box (3) is movably connected inside the outer frame (1), a dust suction opening (4) is arranged below the dust collection box (3), a shifting piece (5) is movably connected inside the dust suction opening (4), the interior of the poking sheet (5) is movably connected with a movable spring (6), the lower part of the dust collection box (3) is movably connected with a rotating roller (7), the outer part of the rotary roller (7) is movably connected with a brush (8), the inner part of the rotary roller (7) is movably connected with a rotating shaft (9), the outer part of the rotating shaft (9) is movably connected with a limiting strip (10), two ends of the limiting strip (10) are movably connected with limiting blocks (11), the right side swing joint of stopper (11) has buffer spring (12), the right side swing joint of buffer spring (12) has bolt (13).

2. The blackboard eraser with a dust collecting function according to claim 1, wherein: the axis of the handheld device (2) is perpendicular to the outer frame (1), the handheld device (2) is cylindrical, and the bottom of the outer frame (1) is slightly higher than the brush (8).

3. The blackboard eraser with a dust collecting function according to claim 1, wherein: the poking sheet (5) is in contact with the hairbrush (8), and the poking sheet (5) is positioned above the hairbrush (8) and has four poking sheets (5) in total.

4. The blackboard eraser with a dust collecting function according to claim 1, wherein: the rotating rollers (7) are a cylinder, the left part of the cylinder is cut off by one third, the rotating rollers (7) are four in number, the four rotating rollers (7) are parallel, brushes (8) are uniformly distributed outside the rotating rollers (7), and the brushes (8) are in an inverted triangular shape.

5. The blackboard eraser with a dust collecting function according to claim 1, wherein: spacing (10) are a radius slightly to be greater than the ring of pivot (9), and stopper (11) cup joint the both sides at spacing (10), and stopper (11) of both sides are symmetric distribution, and pivot (9) are same axis with spacing (10).

6. The blackboard eraser with a dust collecting function according to claim 1, wherein: the buffer spring (12) is sleeved outside the rotating shaft (9), and the buffer spring (12) is located between the limiting block (11) and the bolt (13).

7. The blackboard eraser with a dust collecting function according to claim 1, wherein: the rotating shafts (9) and the rotating rollers (7) are the same axis, so that the number of the rotating shafts (9) is four, and the four rotating shafts (9) are parallel.