CN213056538U

CN213056538U - High-frequency vibration blackboard eraser

Info

Publication number: CN213056538U
Application number: CN202021620976.6U
Authority: CN
Inventors: 胡家俊; 王宗政
Original assignee: Lushan College of Guangxi University of Science and Technology
Current assignee: Lushan College of Guangxi University of Science and Technology
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-27
Anticipated expiration: 2030-08-06

Abstract

The utility model provides a high-frequency vibration blackboard eraser, includes the casing and locates the brush of casing lower part, still including locating the power module in the casing, control module, drive module, micromotor group and drive mechanism, micromotor group is including turning to opposite micromotor I and micromotor II, and the brush includes brush piece I and brush piece II, micromotor I passes through drive mechanism control brush piece I side-to-side motion, and micromotor II passes through drive mechanism control brush piece II side-to-side motion, and the direction of motion of brush piece I and brush piece II is opposite all the time. The user only needs to carry out automatic wiping with brush contact blackboard, and micromotor rotates the rotational speed height, and convenient high efficiency, and the brush is the setting of the double in-line of cavity, makes the chalk dust that wipes to fall drop naturally, and the chalk dust that drops is cleaned to convenient discharge, does not have acutely to raise the ash phenomenon, has both reduced volume, weight, can prevent again that the user from inhaling a large amount of dust and influencing the health, and its brush hair is the nano-material brush hair, cleans effectually, wear-resisting to traditional blackboard.

Description

High-frequency vibration blackboard eraser

Technical Field

The utility model relates to an electron blackboard eraser technical field, in particular to high-frequency vibration blackboard eraser.

Background

At present when multimedia teaching is widely popularized, a traditional blackboard still keeps a place due to the advantages of convenient writing, low cost and the like, but at present when automation is highly developed, no convenient and practical automatic blackboard eraser is commercially available so far, and the traditional blackboard eraser usually has the following technical problems:

1. the wiping wastes time and labor, and the dust flies;

2. the chalk is easy to be stained with dust, and generally after being rubbed for several times, the chalk needs to be knocked for one burst, and most of the chalk dust adhered to the chalk can be shaken off for normal use;

3. along with the increase of the service time, more and more ash is adhered to the felt hair of the blackboard eraser, and the blackboard eraser is not clean.

At present, a plurality of automatic blackboard erasers are looked up, but the mechanical transmission structure of the automatic blackboard erasers is complex, the wiping efficiency is not high, the size is large, the cost is high, particularly, the blackboard erasers with dust collection function modules are large in size and inconvenient to move, the practicability of the automatic blackboard erasers is limited, and the automatic blackboard erasers with dust storage function modules need to clean pipelines frequently and pour out chalk dust in storage boxes, and the automatic blackboard erasers are not practical.

Disclosure of Invention

An object of the utility model is to provide a convenient to use, automatic efficient high-frequency vibration blackboard eraser to overcome the not enough of above-mentioned prior art existence.

The utility model adopts the technical proposal that: a high-frequency vibration blackboard eraser comprises a shell, a brush arranged at the lower part of the shell, a power supply module, a control module, a driving module, a micro motor set and a transmission mechanism, wherein the power supply module, the control module, the driving module, the micro motor set and the transmission mechanism are arranged in the shell;

micromotor group is including turning to opposite micromotor I and micromotor II, and the brush includes brush piece I and brush piece II, micromotor I passes through drive mechanism and connects brush piece I, makes I side-to-side movement of brush piece, and micromotor II passes through drive mechanism and connects brush piece II, makes II side-to-side movements of brush piece, the direction of motion of brush piece I and brush piece II is opposite all the time.

The further technical scheme is as follows: hall sensors are arranged in the micromotor I and the micromotor II and are electrically connected with the control module.

Further: the transmission mechanism comprises an eccentric shaft I and an eccentric shaft II, wherein the upper parts of the brush block I and the brush block II are respectively provided with a clamping groove, the upper end of the eccentric shaft I is connected with an output shaft of a micro motor I, the lower end of the eccentric shaft I is inserted into the clamping groove of the brush block I, the upper end of the eccentric shaft II is connected with an output shaft of the micro motor II, and the lower end of the eccentric shaft II is inserted into the clamping groove of the.

Further: the control module adopts a singlechip.

Further: the driving module adopts a motor driving chip L298N to drive the micro motor I and the micro motor II to rotate reversely at the same time.

Further: the hairbrush is arranged in a hollow double-row straight line, and the bristles of the hairbrush are made of nano materials.

Further: the power supply module comprises a transformer, a lead, a switch and a rechargeable battery, and a voltage stabilizing module is arranged in the power supply module, is connected with the rechargeable battery and supplies power to the control module, the driving module and the micro-motor set.

Further: the blackboard eraser further comprises a pressure sensor arranged on the shell, and the pressure sensor is used as a switch and connected with the control module.

Further: the blackboard eraser further comprises a handle arranged on the upper portion of the shell.

Due to the adoption of the technical scheme, the utility model relates to a high-frequency vibration blackboard eraser has following beneficial effect:

1. because the utility model adopts the micro motor to rotate and directly drive the left and right vibration of the brush, a user can automatically clean the blackboard only by contacting the brush with the blackboard, the rotation speed of the micro motor is high, and the device is convenient, fast and efficient and has high practicability;

2. because the utility model is provided with the control module and adopts the structural form that the double micromotors control the double brush blocks and the symmetrical layout, the two brush blocks always do strict reverse motion while increasing power, thereby realizing force balance, and a user has no violent vibration sense and is convenient and comfortable;

3. because the brush of the utility model is a hollow double-row straight-line arrangement, the design of the hollow channel leads the erased chalk dust to naturally drop, the dropped chalk dust is conveniently discharged and erased, no violent dust raising phenomenon exists, and no complex dust raising collecting device is needed, thereby not only reducing the volume and the weight, but also preventing a user from absorbing a large amount of dust to influence the body, and the brush hair is made of nano-material brush hair, which has good erasing effect and wear resistance to the traditional blackboard;

4. because the eccentric shaft is arranged in the utility model for converting the rotation of the micromotor into the radial motion of the brush block, the structure is simple, the volume and the gravity are small, the movement is convenient, the energy loss of transmission can be effectively reduced, and the defects of large volume and heavy weight in the prior art are overcome;

5. because the power supply module of the utility model comprises the transformer, the lead and the rechargeable battery, the power supply module can be used in a rechargeable manner, and can be directly connected with the mains supply for voltage reduction driving, the use is flexible and convenient, and the defect of short endurance time of the fixed battery is overcome;

6. the size and the weight of the utility model are elaborately designed, so that the maximum wiping area and the lightest weight can be optimally combined.

The technical features of the high-frequency vibrating blackboard eraser of the present invention will be further described with reference to the accompanying drawings and embodiments.

Drawings

FIG. 1 is a schematic view of the overall structure of a high-frequency vibrating blackboard eraser (front view);

FIG. 2 is a schematic view of the overall structure of a high-frequency vibrating blackboard eraser (left side view);

fig. 3 is a schematic view (top view) of the overall structure of a high-frequency vibrating blackboard eraser of the present invention;

fig. 4 is a wiring diagram of the power supply module, the control module and the driving module of the present invention.

In the figure:

the device comprises a shell, 2 brushes, 21 brush blocks I, 22 brush blocks II, 3 power supply modules, 4 control modules, 5 driving modules, 6 micromotors I, 7 micromotors II, 8 eccentric shafts I, 9 eccentric shafts II, 10 handles, 11 transformers, 12 leads and 13 pressure sensors.

Detailed Description

Example one

A high-frequency vibration blackboard eraser is shown in figures 1 and 2 and comprises a shell 1, a brush 2 arranged at the lower part of the shell, a power supply module 3, a control module 4, a driving module 5, a micro motor set and a transmission mechanism, wherein the power supply module 3, the driving module 5 and the micro motor set are arranged in the shell, the power supply module 3 is respectively connected with the control module 4, the driving module 5 and the micro motor set, the control module 4 is also connected with the driving module 5, and the driving module 5 is also connected with the micro motor set (see figure 4);

as shown in figure 3, the micro motor set comprises a micro motor I6 and a micro motor II 7 which are opposite in rotation direction, the brush 2 comprises a brush block I21 and a brush block II 22, the micro motor I6 is connected with the brush block I21 through a transmission mechanism, so that the brush block I21 moves left and right, the micro motor II 7 is connected with the brush block II 22 through the transmission mechanism, so that the brush block II 22 moves left and right, and the movement directions of the brush block I21 and the brush block II 22 are opposite all the time.

All establish hall sensor in micromotor I6 and the micromotor II 7 for the pivoted position information of feedback micromotor to control module 4, with the rotational speed of adjustment micromotor, make two micromotors guarantee opposite direction motion all the time, hall sensor and control module 4 electric connection.

The transmission mechanism comprises an eccentric shaft I8 and an eccentric shaft II 9, wherein the upper parts of a brush block I21 and a brush block II 22 are respectively provided with a clamping groove, the upper end of the eccentric shaft I8 is connected with an output shaft of a micro motor I6, the lower end of the eccentric shaft I8 is inserted into the clamping groove of the brush block I21, the upper end of the eccentric shaft II 9 is connected with an output shaft of a micro motor II 7, and the lower end of the eccentric shaft II 9 is inserted into the clamping groove of.

The control module 4 adopts a single chip microcomputer and carries out speed regulation according to signal feedback of the vibration sensor.

The driving module 5 adopts a motor driving chip L298N to drive the micro motor I6 and the micro motor II 7 to rotate reversely at the same time.

The hair brushes 2 are arranged in a hollow double-row straight line, and the bristles of the hair brushes are made of nano materials.

The power supply module 3 comprises a transformer 11, a lead 12, a switch and a rechargeable battery, and a voltage stabilizing module is arranged in the power supply module, is connected with the rechargeable battery and supplies power to the control module, the driving module and the micro-motor set.

The blackboard eraser further comprises a pressure sensor 13 arranged on the shell, and the pressure sensor 13 is used as a switch to be connected with the control module 4.

The blackboard eraser further comprises a handle 10 arranged at the upper part of the shell.

In practical application, the blackboard can be automatically wiped through the matching of the structure and the modules, so that the labor intensity of teachers is reduced, and the working efficiency is improved.

The working principle and the using process are as follows: the utility model discloses during the use, connect the commercial power through the transformer, the rechargeable battery who steps down in for power module charges or the micromotor of direct drive, and the high-speed rotation of micromotor makes the high-speed differential vibration of brush through drive mechanism to realize the microseism, clean the blackboard fast, chalk dust nature su falls down in the su, the ash phenomenon of raising a wide margin when no tradition blackboard eraser is manually cleaned.

Example two

A control method of a high-frequency vibration blackboard eraser is a method for controlling a brush block I and a brush block II in a blackboard eraser to move in opposite directions by utilizing a control module, a driving module, a micro motor set and a transmission mechanism in the embodiment I;

the method comprises the following specific steps:

step 1: the output shafts of the micro motor I and the micro motor II convert the rotation of the micro motors into radial motion of the brush block I and the brush block II through eccentric shafts, and the two micro motors are controlled to do reverse motion, so that the two brush blocks are driven to do reverse motion;

step 2: the single chip microcomputer regularly acquires the measured value of the Hall sensor in each micromotor, so that the relative position (namely the rotation angle difference) of the rotating shafts of the two micromotors is obtained, and whether the two micromotors drive the two brush blocks to do strict reverse motion or not is reflected;

and step 3: if the relative positions of the two micro-motor rotating shafts are staggered due to uneven friction of any brush block, and the two brush blocks do not strictly reverse motion, the single chip microcomputer adjusts the rotating speed of one micro-motor through PWM (pulse width modulation) waves generated by a timer of the single chip microcomputer, so that the relative positions of the two micro-motor rotating shafts are recovered;

and 4, step 4: the single chip microcomputer adjusts the duty ratio of the PWM wave according to the angular difference of the dislocation of the relative positions of the two micro-motor rotating shafts, and the rapid adjustment and recovery are realized.

The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. The utility model provides a high-frequency vibration blackboard eraser, includes casing (1) and brush (2) of locating the casing lower part, its characterized in that: the blackboard eraser further comprises a power supply module (3), a control module (4), a driving module (5), a micro motor set and a transmission mechanism, wherein the power supply module (3) is arranged in the shell, the control module (4), the driving module (5) and the micro motor set are connected respectively, the control module (4) is further connected with the driving module (5), and the driving module (5) is further connected with the micro motor set;

little motor unit is including turning to opposite micromotor I (6) and micromotor II (7), and brush (2) are including brush piece I (21) and brush piece II (22), brush piece I (21) are connected through drive mechanism in micromotor I (6), make brush piece I (21) side-to-side movement, and brush piece II (22) are connected through drive mechanism in micromotor II (7), make brush piece II (22) side-to-side movement, the direction of motion of brush piece I (21) and brush piece II (22) is opposite all the time.

2. A high-frequency vibration blackboard eraser according to claim 1, wherein: hall sensors are arranged in the micromotor I (6) and the micromotor II (7) and are electrically connected with the control module (4).

3. A high-frequency vibration blackboard eraser according to claim 2, wherein: the transmission mechanism comprises an eccentric shaft I (8) and an eccentric shaft II (9), wherein clamping grooves are formed in the upper portions of the brush block I (21) and the brush block II (22), the upper end of the eccentric shaft I (8) is connected with an output shaft of the micro motor I (6), the lower end of the eccentric shaft I (8) is inserted into the clamping grooves of the brush block I (21), the upper end of the eccentric shaft II (9) is connected with an output shaft of the micro motor II (7), and the lower end of the eccentric shaft II (9) is inserted into the clamping grooves of the brush block II.

4. A high-frequency vibration blackboard eraser according to claim 3, wherein: the control module (4) adopts a singlechip.

5. The high-frequency vibration blackboard eraser according to claim 4, wherein: the driving module (5) adopts a motor driving chip L298N to drive the micro motor I (6) and the micro motor II (7) to rotate reversely at the same time.

6. A high-frequency vibration blackboard eraser according to claim 1, wherein: the hairbrush (2) is arranged in a hollow double-row straight line, and the bristles are made of nano materials.

7. A high-frequency vibration blackboard eraser according to claim 1, wherein: the power supply module (3) comprises a transformer (11), a lead (12), a switch and a rechargeable battery, and a voltage stabilizing module is arranged in the power supply module, is connected with the rechargeable battery and supplies power to the control module, the driving module and the micro-motor set.

8. A high-frequency vibration blackboard eraser according to claim 1, wherein: the blackboard eraser further comprises a pressure sensor (13) arranged on the shell, and the pressure sensor (13) is connected with the control module (4) as a switch.

9. A high-frequency vibration blackboard eraser according to claim 1, wherein: the blackboard eraser further comprises a handle (10) arranged on the upper portion of the shell.