CN110143088B

CN110143088B - Novel blackboard eraser

Info

Publication number: CN110143088B
Application number: CN201910424033.1A
Authority: CN
Inventors: 高杉逸
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2021-03-23
Anticipated expiration: 2039-05-21
Also published as: CN110143088A

Abstract

The invention discloses a novel blackboard eraser, which comprises a blackboard eraser main body, wherein a shell is arranged on the surface of the top end of the blackboard eraser main body, felts are arranged on two sides of the bottom end of the shell, clamping plates are arranged at two ends of the felts on two sides, a buckle is arranged on the inner side of the bottom end of each clamping plate, grids are arranged on the inner sides of the felts on two sides, a motor base is arranged in the middle of the top end of the inner side of the blackboard eraser main body, a motor is arranged on the inner side of the motor base, a rotating wheel is arranged at the bottom end of the. The invention is transmitted to the rotating wheel through the motor, so that the brush rotates rapidly, wind power is generated in the rotating process, dust generated by friction on the inner side and the outer side of the felt is absorbed into the shell, and when the brush rubs against the metal plate, the rubbed metal plate can absorb dust flying in the air after being charged.

Description

Novel blackboard eraser

Technical Field

The invention relates to the field of teaching aids, in particular to a novel blackboard eraser.

Background

The blackboard eraser is generally used in combination with a blackboard, and mainly used as a chalk to generate friction on the blackboard and adhere to the blackboard to generate marks, then the blackboard eraser is used for generating friction on the blackboard, the handwriting of the chalk is adsorbed by the rolling friction of the blackboard eraser on chalk particles, and at the moment, the dust particles of the chalk fly in the air due to smaller electrostatic force, so that the blackboard eraser not only influences the respiratory health of a teacher, but also influences students within a certain range, and statistics data show according to the national relevant report in 2000: the chalk dust inhaled by teachers and students in China in class is about 200 g/person every year, and the chalk dust is about 20% per year of people suffering from respiratory diseases, lung diseases and cancers.

In the prior art, the blackboard eraser is improved more, but the mechanical precision requirement is too high usually, or the maintenance cost of the product is too high and the waste of the electric quantity resource is too much, the blackboard eraser is not taken into consideration as a constant displacement and a small and exquisite part, the hand is greatly shaken to easily influence the internal structure in the process, so that the practical efficiency of the blackboard eraser is reduced, some large-scale blackboard erasers cannot be replaced, the internal precision degree is higher, the high-level requirement on the self-maintenance capability is met, the traditional blackboard erasers can cause a large amount of dust, and therefore inconvenience is caused in the using process of users.

Disclosure of Invention

The invention provides a novel blackboard eraser, which overcomes the defects of the prior art and is characterized in that a motor is mainly used for driving a rotating wheel to rotate, a brush is enabled to rotate rapidly, wind power is generated in the rotating process, dust generated by friction on the inner side and the outer side of a felt is absorbed into a shell, when the brush and a metal plate generate friction, the metal plate subjected to friction can absorb flying dust in air after charges are charged, when the charges are lost on the metal plate, the dust on the metal plate falls into an insert box to be processed in a centralized manner, meanwhile, the electrical structure in the shell is simple, whether power is supplied to the motor by a storage battery of a battery seat is mainly controlled through a switch, the circuit is simple and clear, when the inner part is damaged, a detachable structure enables a user to overhaul the blackboard eraser by himself, and the practicability is enhanced under the condition of increasing the cost performance.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a novel blackboard eraser, which comprises a blackboard eraser main body, wherein a shell is arranged on the surface of the top end of the blackboard eraser main body, grids are arranged in the middle parts of two sides of the surface of the shell, a power switch is arranged in the middle part of the top end of the shell, a battery cover is arranged on one side of the top end of the shell, slide bars are arranged at two ends of the inner wall of the battery cover, an elastic buckle is arranged in the middle part of the bottom end of the battery cover, a battery base is arranged on the inner side of the battery cover, slide grooves are arranged on two sides of the top end of the battery base, a buckle groove is arranged in the middle part of the bottom side of one end of the battery base, a socket is arranged on the bottom side of the battery cover, an inserting box is arranged on the inner side of the socket, felts, the motor is installed to the inboard of motor cabinet, the runner is installed to the bottom of motor, the tight pulley is installed to the bottom of runner, the metal sheet is installed to the both sides of tight pulley, the brush is installed to the bottom of tight pulley.

As a preferred technical solution of the present invention, the battery cover and the battery holder are connected by a sliding buckle, the buckle groove and the elastic buckle are connected by a buckle, and the slide bar and the slide groove are connected by a sliding buckle.

As a preferred technical scheme of the present invention, the motor base is fixedly connected to the motor, the motor is in transmission connection with the rotating wheel, the rotating wheel is in bearing connection with the fixed wheel, the brush is fixedly connected to the rotating wheel, the inner side of the metal plate is in a semicircular structure, the radian of the inner side of the metal plate is half of the arc length of the fixed wheel, and the metal plate is fixedly connected to the fixed wheel.

As a preferred technical scheme of the invention, the metal plate is made of copper metal material, the thickness of the metal plate is half of the width of the hairbrush, the metal plate and the hairbrush generate friction, the edge of the hairbrush is arranged between the metal plate and the insert box, and the inner wall of the motor base is provided with a silica gel layer.

As a preferred technical scheme of the invention, the plug box and the socket are in sliding connection, the plug box is of a semi-open structure, and the plug box is made of a glass fiber plate material.

As a preferable technical scheme of the invention, two ends of the inner side of the shell are provided with felt grooves, two ends of the clamping plate and the felt grooves are fixedly connected, the felt and the felt grooves are in glue connection, the buckles and the grids are in buckle connection, and the grid density is 2.45CM/30 meshes.

As a preferred technical solution of the present invention, the power switch is electrically connected to the battery holder and the motor, respectively.

Compared with the prior art, the invention has the following beneficial effects:

1: the dust collector adopts the dust collection function, the motor is driven to the rotating wheel, the brush is enabled to rotate rapidly, wind power is generated in the rotating process, and dust generated by friction on the inner side and the outer side of the felt is absorbed into the shell.

2: the invention adopts the electrostatic dust removal function, so that the brush and the metal plate generate friction, the friction metal plate can absorb dust flying in the air after the charges are charged, and when the charges disappear on the metal plate, the dust on the metal plate falls into the plug box for centralized treatment.

3: the invention has simple electrical structure, the storage battery of the battery holder is controlled by the switch to supply power to the motor, the circuit is simple and clear, and when the inside is damaged, the detachable structure can allow a user to automatically overhaul, thereby enhancing the practicability under the condition of increasing the cost performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic cross-sectional view of the housing of the present invention;

FIG. 3 is an exploded view of the housing of the present invention;

FIG. 4 is a schematic view of a partial structure of the present invention;

FIG. 5 is a schematic view of the felt structure of the present invention;

FIG. 6 is a schematic diagram of the electrical connection of the present invention;

in the figure: 1. a blackboard eraser main body; 101. a motor base; 102. a motor; 103. a rotating wheel; 104. a fixed wheel; 105. a metal plate; 106. a brush; 2. a housing; 201. a grid; 202. a power switch; 203. a felt groove; 3. a battery cover; 301. a slide bar; 302. elastic buckle; 4. a battery holder; 401. a chute; 402. a fastening groove; 5. a socket; 501. inserting a box; 6. felt; 601. a splint; 602. buckling; 603. and (4) grid.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

As shown in fig. 1-6, the invention provides a novel blackboard eraser, which comprises a blackboard eraser body 1, wherein a shell 2 is installed on the top surface of the blackboard eraser body 1, grids 201 are arranged in the middle of two sides of the surface of the shell 2, a power switch 202 is installed in the middle of the top of the shell 2, a battery cover 3 is installed on one side of the top of the shell 2, slide bars 301 are installed on two ends of the inner wall of the battery cover 3, an elastic buckle 302 is installed in the middle of the bottom end of the battery cover 301, a battery holder 4 is installed on the inner side of the battery cover 3, sliding grooves 401 are installed on two sides of the top of the battery holder 4, a buckle groove 402 is installed in the middle of the bottom side of one end of the battery holder 4, a socket 5 is installed on the bottom side of the battery cover 3, a plug box 501 is installed on the inner side of, the middle of the top end of the inner side of the blackboard eraser main body 1 is provided with a motor base 101, the inner side of the motor base 101 is provided with a motor 102, the bottom end of the motor 102 is provided with a rotating wheel 103, the bottom end of the rotating wheel 103 is provided with a fixed wheel 104, two sides of the fixed wheel 104 are provided with metal plates 105, and the bottom end of the fixed wheel 104 is provided with a brush 106.

Further, the battery cover 3 and the battery holder 4 are connected in a sliding buckle mode, the buckle groove 402 and the elastic buckle 302 are connected in a buckle mode, the sliding strip 301 and the sliding groove 401 are connected in a sliding mode, the battery cover 3 and the battery holder 4 can be connected in a sliding mode through the sliding strip 301 and the sliding groove 401, when the battery cover 3 is pushed to completely cover the top end of the battery holder 4, the elastic buckle 302 at the bottom end of the battery cover 3 is connected with the buckle groove 402 in a buckle elastic mode, therefore, the upper end of the blackboard eraser body 1 is sealed, and the water inflow rate after water is attached to the upper end is.

The motor base 101 is fixedly connected with the motor 102, the motor 102 is in transmission connection with the rotating wheel 103, the rotating wheel 103 is in bearing connection with the fixed wheel 104, the brush 106 is fixedly connected with the rotating wheel 103, the inner side of the metal plate 105 is of a semicircular structure, the radian of the metal plate is half of the length of the arc of the fixed wheel 104, the metal plate 105 is fixedly connected with the fixed wheel 104, the motor 102 can drive the rotating wheel 103 to rotate when being fixed by the motor base 101, the rotating wheel 103 and the fixed wheel 104 are in relation of an inner rotor and an outer rotor, the rotating wheel 103 drives the brush 106 to rotate, meanwhile, the metal plate 105 connected with the fixed wheel 104 generates friction with the brush 106 due to the thickness of the metal plate, and the point discharge of charges caused on the brush 106 enables the metal plate 105 to be charged to generate an electrostatic adsorption phenomenon.

The metal plate 105 is made of copper metal, the thickness of the metal plate 105 is one half of the width of the brush, friction is generated between the metal plate 105 and the brush 106, the edge of the brush 106 is arranged between the metal plate 105 and the inserting box 501, and the inner wall of the motor base 101 is provided with a silica gel layer, so that when the metal plate 105 with enough thickness and the brush 106 generate friction, the inserting box 501 at the bottom end can enable electric charges to face the direction of the metal plate 105 after being used as an insulating material to rub with the brush 106, and therefore the electrification capacity of the metal plate 105 is improved.

Insert box 501 and socket 5 and be sliding connection, insert box 501 is half open-ended structure, and insert box 501 is the fine plate material preparation of glass and forms, makes metal sheet 105 after releasing the electric charge, and the dust that metal sheet 105 adsorbs falls into inserting box 501 because of the gravity principle, and insert box 501 and socket 5 as sliding connection, can make the dust centralized processing after inserting box 501 and taking out socket 5.

The two ends of the inner side of the shell 2 are provided with felt grooves 203, the clamping plate 601 and the two ends of the felt grooves 203 are fixedly connected, the felt 6 and the felt grooves 203 are in adhesive connection, the buckle 602 and the grid 603 are in buckle connection, the density of the grid 603 is 2.45CM/30 meshes, so that dust can be adsorbed to the felt 6 after the felt 6 is rubbed with a blackboard, the flying dust can be adsorbed to the felt 6 due to the rotation of the brush 106 in the blackboard eraser body 1, the dust absorption capacity is generated, meanwhile, the grids 603 at the two ends can adsorb the flying dust at the outer side, and other foreign matters can be prevented from entering the blackboard eraser body.

The power switch 202 is electrically connected to the battery holder 4 and the motor 102, so that the power switch can control the battery holder 4 to supply power to the motor 102, the circuit is simple and clear, and a user can simply overhaul the inside of the blackboard eraser body 1 under the condition that the whole blackboard eraser is easy to disassemble.

Specifically, a user can hold the blackboard eraser body 1 through the grid 201 on the housing 2, the motor 102 inside the blackboard eraser body 1 is controlled to rotate by the power switch 202 at the top end of the housing 2, the motor base 101 at this time can reduce the vibration caused by the motor 102 due to the silica gel layer at the inner side, the motor 102 can drive the rotating wheel 103 to rotate, the rotating wheel 103 and the fixed wheel 104 form an outer rotor and inner rotor structure, so that the rotating wheel 103 at the inner side drives the brush 106 to rotate, the fixed wheel 104 at the outer side is fixedly connected with the metal plate 105, meanwhile, the metal plate 105 is rubbed with the rotating brush 106 due to the thickness and the position, at this time, the brush 106 generates charge point discharge after repeated rubbing as an insulator, the glass fiber plate used by the cartridge 501 at the bottom end is made of an insulating material, and the copper metal used by the metal plate 105 at the top end has a good charge absorption, the metal plate 105 can generate electrostatic adsorption reaction with static electricity, the inner side of the felt 6 is provided with a hollow structure, the brush 106 generates suction force in the shell 2 after rotating, the grids 603 at the two ends can absorb dust flying at the outer side under the condition of ensuring the balance of the internal air pressure, the grids 603 generate connection relation through the buckle 602 on the clamping plate 601, the whole device becomes a structure capable of being disassembled simply by self, when a user stops the power supply of the power switch 202, the brush 106 stops the friction with the metal plate 105 due to the stop of the motor 102, the metal plate 105 automatically generates discharge, when the charge release is finished, the absorbed dust falls to the plug box 501, the user can draw out the plug box 501 through the sliding connection of the plug box 501 and the socket 5, the dust in the inner part is treated in a concentrated manner, when the storage battery needs to be replaced, the user can press the elastic buckle 302 to weaken the elasticity, the battery holder 4 is exposed to the external environment for replacing the internal battery by separating the battery holder on the fastening groove 402 and pulling out the battery cover 3 through the sliding of the sliding strip 301 and the sliding groove 401, the structure of the battery holder can reduce the water source entering in a sealing manner, and the short circuit caused by water wetting when the power switch 202 is started is reduced.

The invention is transmitted to the rotating wheel 103 through the motor 102, so that the brush 106 rotates rapidly, wind power is generated in the rotating process, dust generated by friction on the inner side and the outer side of the felt 6 is absorbed into the shell 2, when the brush 106 and the metal plate 105 generate friction, the metal plate 105 subjected to friction can absorb dust flying in the air due to charges, when the charges disappear on the metal plate 105, the dust on the metal plate 105 falls into the plug box 501 for centralized treatment, meanwhile, the electrical structure in the shell 2 is simple, whether the storage battery of the battery holder 4 supplies power to the motor 102 is mainly controlled through the power switch 202, the circuit is simple and clear, when the inner part is damaged, the detachable structure enables a user to overhaul by himself, and the practicability is enhanced under the condition of increasing the cost performance.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The novel blackboard eraser comprises a blackboard eraser main body (1) and is characterized in that a shell (2) is installed on the surface of the top end of the blackboard eraser main body (1), grids (201) are arranged in the middle of two sides of the surface of the shell (2), a power switch (202) is installed in the middle of the top end of the shell (2), a battery cover (3) is installed on one side of the top end of the shell (2), slide bars (301) are installed at two ends of the inner wall of the battery cover (3), an elastic buckle (302) is installed in the middle of the bottom end of the battery cover (3), a battery base (4) is installed on the inner side of the battery cover (3), sliding grooves (401) are installed on two sides of the top end of the battery base (4), a buckle groove (402) is arranged in the middle of the bottom side of one end of the battery base (4), a socket (5), felt (6) are installed to the bottom both sides of shell (2), splint (601) are installed at the both ends of both sides felt (6), the bottom inboard of splint (601) is provided with buckle (602), net (603) are installed to the inboard of both sides felt (6), the inboard top middle part of blackboard eraser main part (1) is provided with motor cabinet (101), motor (102) are installed to the inboard of motor cabinet (101), runner (103) are installed to the bottom of motor (102), tight pulley (104) are installed to the bottom of runner (103), metal sheet (105) are installed to the both sides of tight pulley (104), brush (106) are installed to the bottom of tight pulley (104).

2. The novel blackboard eraser according to claim 1, characterized in that the battery cover (3) and the battery holder (4) are in sliding snap connection, the snap groove (402) and the elastic snap (302) are in snap connection, and the slide bar (301) and the sliding groove (401) are in sliding connection.

3. The novel blackboard eraser according to claim 1, wherein the motor base (101) is fixedly connected with the motor (102), the motor (102) is in transmission connection with the rotating wheel (103), the rotating wheel (103) is in bearing connection with the fixed wheel (104), the brush (106) is fixedly connected with the rotating wheel (103), the inner side of the metal plate (105) is in a semicircular structure, the radian of the metal plate is half of the arc length of the fixed wheel (104), and the metal plate (105) is fixedly connected with the fixed wheel (104).

4. The novel blackboard eraser as claimed in claim 3, wherein the metal plate (105) is made of copper metal, the thickness of the metal plate (105) is half of the width of the brush, the metal plate (105) and the brush (106) generate friction, the edge of the brush (106) is arranged between the metal plate (105) and the insert box (501), and the inner wall of the motor base (101) is provided with a silicone layer.

5. The novel blackboard eraser according to claim 4, wherein the plug box (501) and the socket (5) are connected in a sliding manner, the plug box (501) is of a half-open structure, and the plug box (501) is made of glass fiber plate material.

6. The novel blackboard eraser according to claim 1, characterized in that felt grooves (203) are arranged at two ends of the inner side of the casing (2), the clamping plate (601) and the felt grooves (203) are fixedly connected at two ends, the felt (6) and the felt grooves (203) are connected in an adhesive manner, the buckle (602) and the grid (603) are connected in a buckle manner, and the density of the grid (603) is 2.45CM/30 mesh.

7. The new blackboard eraser according to claim 1, characterized in that the power switch (202) is electrically connected to the battery holder (4) and the motor (102), respectively.