CN110920298A

CN110920298A - Low-dust soft blackboard

Info

Publication number: CN110920298A
Application number: CN201911273060.XA
Authority: CN
Inventors: 吴小红
Original assignee: Jiangxi Runhua E Commerce Co Ltd
Current assignee: JIANGXI RUNHUA EDUCATION EQUIPMENT GROUP Co.,Ltd.
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-03-27
Anticipated expiration: 2039-12-12
Also published as: CN110920298B

Abstract

The invention relates to a blackboard, in particular to a low-dust soft blackboard. The technical problem is how to design a low-dust soft blackboard which can replace manual work to erase characters, avoid the influence of chalk dust on health caused by the fact that chalk dust is sucked into the body and is labor-saving. The utility model provides a soft blackboard of low dust, including the u template, the rotary type of symmetry formula is equipped with the pivot between the u template inboard both sides, the quantity of belt pulley is four at least, its install in the both sides of pivot, the flat belt is around between the belt pulley of both sides, soft blackboard winding is in between the flat belt outside of both sides, the bottom is opened there is the powder collection groove in the u template. According to the invention, the flat belt can drive the soft blackboard to rotate by pressing the button, the cross hollow brush plate can wipe characters on the rotating soft blackboard, the blackboard eraser is not required to be held by a hand to wipe characters, the labor is saved, and the phenomenon that chalk dust is sucked into a body to affect health is avoided.

Description

Low-dust soft blackboard

Technical Field

The invention relates to a blackboard, in particular to a low-dust soft blackboard.

Background

The blackboard is not particularly a black board, is a plane which can be repeatedly written by chalk in the traditional sense, is hard, and is mainly used for teaching. The blackboard is generally made of wood board or ground glass, and can be written on by using specific writing materials such as chalk. Most of the blackboard is black, dark green, white or beige, and the blackboard is usually used in teaching, and chalk is needed to be used for writing on the blackboard.

At present, people all take the blackboard eraser to erase words on the blackboard by hand, because a large amount of chalk dust can appear in the in-process of erasing and drop, easily inhaled by people and influenced health in the body, and the blackboard is generally bigger, needs the people to wave the hand and erase continuously, and a long time is relatively hard, and after the blackboard is full, need wait to write once more after the word is erased, work efficiency is low.

Therefore, a low-dust soft blackboard which can replace manual work to erase characters, avoid the influence of chalk dust on health caused by the fact that chalk dust is sucked into a body and is labor-saving is particularly needed to solve the problems in the prior art.

Disclosure of Invention

In order to overcome the defects that a large amount of chalk dust falls off in the erasing process, the chalk dust is easily sucked into the body of people to affect health, the chalk dust needs to be continuously wiped by hands for erasing, the time is long, and the chalk dust is relatively laborious, the technical problem of the invention is as follows: the low-dust soft blackboard can replace manual work to erase characters, avoid chalk dust from being sucked into a body to influence health, and is labor-saving.

The technical scheme is as follows: a low-dust soft blackboard comprises: the automatic powder collecting device comprises a u-shaped plate, wherein rotating shafts are symmetrically and rotatably arranged between two sides in the u-shaped plate, the number of belt pulleys is at least four, the belt pulleys are arranged on two sides of each rotating shaft, a flat belt is wound between the belt pulleys on the two sides, a soft blackboard is wound between the outer sides of the flat belts on the two sides, a powder collecting groove is formed in the bottom in the u-shaped plate, and a button is arranged on one side in the u-shaped plate close to the powder collecting groove; the driving mechanism is arranged on one side of the powder collecting groove far away from the soft blackboard, is connected and matched with one of the rotating shafts, is in circuit connection with the button and is used for providing power; and the wiping mechanism is arranged on one side of the u-shaped plate close to the driving mechanism, is also connected and matched with the driving mechanism, and is in contact with the soft blackboard and used for erasing characters on the soft blackboard.

In a preferred embodiment of the invention, the driving mechanism comprises a double-shaft motor, a first bevel gear and a second bevel gear, the double-shaft motor is arranged at one side of the powder collecting groove close to the button and far away from the soft blackboard, an output shaft at one end of the double-shaft motor is provided with the first bevel gear, an output shaft at the other end of the double-shaft motor penetrates through the u-shaped plate and is connected with the wiping mechanism, and the second bevel gear is arranged at the end part of a rotating shaft close to the double-shaft motor and facing the powder collecting groove and is meshed.

In a preferred embodiment of the invention, the wiping mechanism comprises a cross hollow brush plate, a rotating rod, a first driving wheel, a second driving wheel and a conveyor belt, wherein the rotating rod is rotatably connected to one side of the u-shaped plate close to the button in a penetrating mode, one end of the rotating rod is fixedly connected with the cross hollow brush plate contacted with the soft blackboard, the other end of the rotating rod is fixedly connected with the first driving wheel, the second driving wheel is installed on an output shaft of a double-shaft motor far away from a first bevel gear, and the conveyor belt is wound between the first driving wheel and the second driving wheel.

In a preferred embodiment of the invention, the blackboard eraser further comprises a limiting mechanism, the limiting mechanism comprises movable plates, a contact plate, an L-shaped pull rod, a sliding plate and a first spring, sliding grooves are symmetrically formed in one side of the u-shaped plate far away from the powder collecting groove and are positioned between rotating shafts on two sides, the sliding plate is slidably placed in the sliding grooves, the first spring is connected between one side of the sliding plate far away from the soft blackboard and one side of the sliding grooves far away from the soft blackboard, the movable plate capable of supporting the soft blackboard is arranged between one sides of the two movable plates facing the powder collecting groove and is positioned in the soft blackboard, the contact plate matched with the button is arranged on one side of the movable plate close to the double-shaft motor, the L-shaped pull rod matched with the contact plate is hinged to one side of the u-shaped plate close to the button, and the.

In a preferred embodiment of the invention, the blackboard eraser further comprises a cross groove rotating disc, an air cylinder and a second spring, wherein the air cylinder is distributed at one side of the cross hollow brush plate far away from the soft blackboard at intervals, the telescopic rod of the air cylinder is sleeved with the second spring for resetting, and the cross groove rotating disc matched with the air cylinder is arranged at one side of the inside of a u-shaped plate close to the cross hollow brush plate and is in contact with the telescopic rod of the air cylinder.

In a preferred embodiment of the invention, the blackboard eraser further comprises a push plate and an L-shaped rod, wherein the push plate is slidably placed in the powder collecting groove, the L-shaped rod is installed on one side, facing the soft blackboard, of the push plate, and the end part of the L-shaped rod is located outside the powder collecting groove.

Compared with the prior art, the invention has the following advantages: according to the invention, the flat belt can drive the soft blackboard to rotate by pressing the button, the cross hollow brush plate can wipe characters on the rotating soft blackboard, the blackboard eraser is not required to be held by hands to wipe characters, the labor is saved, chalk dust is prevented from being sucked into the body to affect health, the soft blackboard can be supported by the limiting mechanism, people can write on the soft blackboard better, and the residual chalk dust on the cross hollow brush plate can be removed by the action of the air cylinder, so that the influence on the next use is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a schematic view of a first partial body structure according to the present invention.

FIG. 3 is a schematic view of a second partial body structure according to the present invention.

Fig. 4 is a perspective view of a third embodiment of the present invention.

Fig. 5 is a perspective view of a fourth embodiment of the present invention.

FIG. 6 is a schematic view of a fifth partial body structure according to the present invention.

Fig. 7 is an enlarged schematic view of part a of the present invention.

Fig. 8 is an enlarged view of part B of the present invention.

Fig. 9 is an enlarged schematic view of part C of the present invention.

Labeled as: 1 … u type plate, 2 … soft blackboard, 3 … rotating shaft, 4 … powder collecting groove, 5 … belt pulley, 6 … flat belt, 7 … driving mechanism, 71 … double-shaft motor, 72 … first bevel gear, 73 … second bevel gear, 8 … wiping mechanism, 81 … cross hollow brush plate, 82 … rotating rod, 83 … first driving wheel, 84 … second driving wheel, 85 … driving belt, 9 … button, 10 … limiting mechanism, 101 … movable plate, 102 … contact plate, 103 … L type pull rod, 104 … sliding groove, 105 … sliding plate, 106 … first spring, 11 … cross groove rotating plate, 12 … air cylinder, 13 … second spring, 14 … push plate, 15 … L type rod.

Detailed Description

Although the present invention may be described with respect to particular applications or industries, those skilled in the art will recognize the broader applicability of the invention. Those of ordinary skill in the art will recognize other factors such as: terms such as above, below, upward, downward, and the like are used to describe the accompanying drawings and are not meant to limit the scope of the invention, which is defined by the appended claims. Such as: any numerical designation of first or second, and the like, is merely exemplary and is not intended to limit the scope of the invention in any way.

Example 1

Referring to fig. 1, 2, 3, 4, 5 and 7, a low-dust soft blackboard comprises a u-shaped plate 1, a soft blackboard 2, a rotating shaft 3, belt pulleys 5, a flat belt 6, a driving mechanism 7 and a wiping mechanism 8, wherein the rotating shaft 3 is rotatably connected between the left side and the right side of the inner top of the u-shaped plate 1, the belt pulleys 5 are respectively arranged at the upper part and the lower part of the rotating shaft 3, the flat belt 6 is wound between the belt pulleys 5 at the two sides above the upper part, the flat belt 6 is also wound between the belt pulleys 5 at the two sides below the lower part, the soft blackboard 2 is connected between the outer side surfaces of the belt pulleys 5 at the upper part and the lower part, a chalk dust collecting groove 4 capable of collecting chalk dust is arranged at the inner bottom of the u-shaped plate 1, the driving mechanism 7 is arranged between the right part of the chalk collecting groove 4 and the bottom end of the rotating shaft 3 at the right side, the wiping mechanism 8 is arranged, a button 9 is arranged on the lower side of the right part of the inner rear side surface of the u-shaped plate 1, and the button 9 is in circuit connection with the driving mechanism 7.

The driving mechanism 7 comprises a double-shaft motor 71, a first bevel gear 72 and a second bevel gear 73, the double-shaft motor 71 is mounted on the right side of the bottom in the powder collecting groove 4, the double-shaft motor 71 is in circuit connection with the button 9, the first bevel gear 72 is connected onto a front output shaft of the double-shaft motor 71, the second bevel gear 73 is fixedly connected to the bottom end of the right rotating shaft 3, the second bevel gear 73 is meshed with the first bevel gear 72, and a rear output shaft of the double-shaft motor 71 penetrates through the u-shaped plate 1 and is connected with the wiping mechanism 8.

The wiping mechanism 8 comprises a cross hollow brush plate 81, a rotating rod 82, a first driving wheel 83, a second driving wheel 84 and a conveying belt 85, the rotating rod 82 is rotatably connected to the right part of the rear side of the u-shaped plate 1, the front end of the rotating rod 82 is fixedly connected with the cross hollow brush plate 81, the cross hollow brush plate 81 is in contact with the soft blackboard 2, holes are uniformly arranged in the front side of the cross hollow brush plate 81 at intervals, the first driving wheel 83 is fixedly connected to the rear end of the rotating rod 82, the second driving wheel 84 is connected to the rear side output shaft of the double-shaft motor 71 through a coupler, and the conveying belt 85 is wound between the second driving wheel 84 and the first driving wheel 83.

Firstly, an operator can write characters on the soft blackboard 2 by using chalk, when one side of the soft blackboard 2 is full and needs to be erased, the operator can press the button 9, the driving mechanism 7 operates to drive the rotating shaft 3 to rotate, the rotating shaft 3 rotates to drive the belt pulley 5 to rotate, the belt pulley 5 rotates to drive the flat belt 6 to rotate, the flat belt 6 rotates to drive the soft blackboard 2 to rotate, meanwhile, the driving mechanism 7 also drives the erasing mechanism 8 to operate, when one side of the soft blackboard 2 on which characters are written rotates to the rear side, the erasing mechanism 8 operates to erase the characters on the soft blackboard 2, the chalk dust which is erased falls into the chalk dust collecting groove 4, when the other side of the soft blackboard 2 rotates to the front side, the button 9 is released, the driving mechanism 7 stops operating, the soft blackboard 2 stops rotating, the erasing mechanism 8 also stops operating, and the operator can write on the soft blackboard 2 again. When a proper amount of chalk dust is in the chalk dust collecting groove 4, an operator can take out the chalk dust in the chalk dust collecting groove 4 for treatment.

When one side of the soft blackboard 2 is full of characters, an operator presses the button 9 to start the double-shaft motor 71, the double-shaft motor 71 rotates to drive the first bevel gear 72 to rotate, the first bevel gear 72 rotates to drive the second bevel gear 73 to rotate, the second bevel gear 73 rotates to drive the rotating shaft 3 to rotate, the soft blackboard 2 further rotates, meanwhile, the double-shaft motor 71 also rotates to drive the wiping mechanism 8 to operate, and the wiping mechanism 8 operates to wipe the characters on the soft blackboard 2. When the other side of the soft blackboard 2 rotates to the front side, the button 9 is released, the biaxial motor 71 stops rotating, and the soft blackboard 2 also stops rotating.

When the double-shaft motor 71 is started, the double-shaft motor 71 further drives the second transmission wheel 84 to rotate, the second transmission wheel 84 rotates to drive the first transmission wheel 83 to rotate through the transmission belt 85, the first transmission wheel 83 rotates to drive the rotating rod 82 to rotate, the rotating rod 82 rotates to drive the cross hollow brush plate 81 to rotate, and when one side of the soft blackboard 2 written with characters rotates to the rear side, the cross hollow brush plate 81 rotates to wipe the characters on the soft blackboard 2. When the other side of the soft blackboard 2 rotates to the front side, the double-shaft motor 71 is turned off, and the cross hollow brush plate 81 stops rotating.

Example 2

Referring to fig. 2, 3, 5, 6 and 9, the present embodiment is different from embodiment 1 mainly in that in the present embodiment, the novel blackboard eraser is characterized by further comprising a limiting mechanism 10, the limiting mechanism 10 comprises a movable plate 101, a contact plate 102, an L-shaped pull rod 103, a sliding plate 105 and a first spring 106, sliding grooves 104 are formed in the left side and the right side of the inner top of the u-shaped plate 1, the sliding grooves 104 are located between the rotating shafts 3 on the left side and the right side, the sliding plate 105 is arranged in the sliding grooves 104 in a sliding mode, the first spring 106 is connected between the rear side face of the sliding plate 105 and the rear side face of the sliding grooves 104, the movable plate 101 is installed between the lower portions of the sliding plates 105 on the left side and the right side, the movable plate 101 is located in the soft blackboard 2 and is in contact with the soft blackboard 2, the contact plate 102 is fixedly connected to the right side of the.

When an operator writes on the soft blackboard 2, the movable plate 101 supports the soft blackboard 2, so that the operator can write on the soft blackboard 2 better, when one side of the soft blackboard 2 is full of characters, the upper portion of the L-shaped pull rod 103 is pulled to swing forwards, the upper portion of the L-shaped pull rod 103 swings forwards to make the lower portion swing backwards, the lower portion of the L-shaped pull rod 103 swings backwards to push the contact plate 102 to move backwards, the contact plate 102 moves backwards to drive the movable plate 101 to move backwards, the movable plate 101 moves backwards to be not in contact with the soft blackboard 2, meanwhile, the movable plate 101 moves backwards to drive the sliding plate 105 to move backwards, the first spring 106 compresses the contact plate 102, the contact plate 102 moves backwards to be in contact with the button 9, the double-shaft motor 71 is started, and the cross hollow brush plate 81 is enabled to rotate to wipe the characters on the soft blackboard 2. When the other side of the soft blackboard 2 rotates to the front side, the L-shaped pull rod 103 is released, the sliding plate 105 moves forward to drive the movable plate 101 to move forward to reset under the action of the first spring 106, the movable plate 101 also drives the contact plate 102 to move forward to be separated from the button 9, the double-shaft motor 71 is turned off, the soft blackboard 2 stops rotating, and writing can be continued on the soft blackboard 2. Therefore, the writing effect can be prevented from being influenced by the fact that the soft blackboard 2 is too soft.

Example 3

Referring to fig. 1, 2, 3, 4, 5 and 7, in this embodiment, compared with embodiment 1 and embodiment 2, the main difference lies in that in this embodiment, the apparatus further includes a cross slot rotating disc 11, an air cylinder 12 and a second spring 13, the air cylinders 12 are installed on the rear side of the cross hollow brush plate 81 at uniform intervals, the air cylinders 12 are communicated with the interior of the cross hollow brush plate 81, the second spring 13 is connected to an expansion link of the air cylinder 12, the cross slot rotating disc 11 is fixedly connected to the right portion of the rear side of the interior of the u-shaped plate 1, the cross slot rotating disc 11 is located on the right rear side of the cross hollow brush plate 81, and the cross slot rotating disc 11 is in contact fit with the air cylinders.

The powder collecting device also comprises a push plate 14 and an L-shaped rod 15, wherein the push plate 14 is arranged in the powder collecting groove 4 in a sliding mode, and the L-shaped rod 15 is fixedly connected to the front side of the top of the push plate 14.

When the cross hollow brush board 81 rotates, the cross hollow brush board 81 also drives the air cylinder 12 to rotate, the air cylinder 12 rotates to slide on the cross groove rotary table 11, the cross groove rotary table 11 enables the telescopic rod of the air cylinder 12 to stretch out and draw back under the action of the second spring 13, the air cylinder 12 continuously discharges air into the cross hollow brush board 81, the air is discharged to remove the residual chalk dust in the cross hollow brush board 81, and the removed chalk dust falls into the chalk collecting groove 4. When the cross hollow brush 81 stops rotating, the air cylinder 12 stops rotating and the air stops being ejected. Therefore, the subsequent use of the cross hollow brush plate 81 influenced by the residual chalk dust can be avoided.

When a proper amount of chalk dust is in the chalk dust collecting groove 4, an operator can pull the L-shaped rod 15 to move leftwards, the L-shaped rod 15 moves leftwards to drive the push plate 14 to move leftwards, and the push plate 14 moves leftwards to push the chalk dust in the chalk dust collecting groove 4 to move leftwards to be pushed out. When all the chalk dust is pushed out, the L-shaped rod 15 is pulled to drive the push plate 14 to move rightwards to reset. Therefore, the operation personnel can more conveniently process the chalk dust in the chalk dust collecting groove 4.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A low-dust soft blackboard is characterized by comprising:

the soft blackboard is characterized by comprising a u-shaped plate (1), wherein rotating shafts (3) are symmetrically arranged between two sides in the u-shaped plate (1) in a rotating mode, the number of belt pulleys (5) is at least four, the belt pulleys are mounted on two sides of the rotating shafts (3), a flat belt (6) is wound between the belt pulleys (5) on two sides, a soft blackboard (2) is wound between the outer sides of the flat belts (6) on two sides, a powder collecting groove (4) is formed in the bottom in the u-shaped plate (1), and a button (9) is mounted on one side in the u-shaped plate (1) close to the powder collecting groove (4);

the driving mechanism (7) is arranged on one side of the powder collecting groove (4) far away from the soft blackboard (2), is connected and matched with one rotating shaft (3), and is in circuit connection with the button (9) and used for providing power;

wiping mechanism (8), install in be close to u template (1) one side of actuating mechanism (7), it still with actuating mechanism (7) connection cooperation, wiping mechanism (8) with soft blackboard (2) contact for erase the word on soft blackboard (2).

2. A low-dust soft blackboard according to claim 1, wherein the driving mechanism (7) includes a double-shaft motor (71), a first bevel gear (72) and a second bevel gear (73), the double-shaft motor (71) is installed near the button (9) and far from the powder collecting groove (4) of the soft blackboard (2), one output shaft of the double-shaft motor is installed with the first bevel gear (72), the other output shaft penetrates through the u-shaped plate (1) and is connected with the wiping mechanism (8), the second bevel gear (73) is installed at the end of the rotating shaft (3) near the double-shaft motor (71) and facing the powder collecting groove (4) and is meshed with the first bevel gear (72).

3. A low-dusting soft blackboard according to claim 2, wherein the wiping mechanism (8) includes a cross hollow brush plate (81), a rotating rod (82), a first driving wheel (83), a second driving wheel (84) and a transmission belt (85), the rotating rod (82) is rotatably connected to one side of the u-shaped plate (1) close to the button (9) in a penetrating manner, one end of the rotating rod is fixedly connected with the cross hollow brush plate (81) contacting the soft blackboard (2), the other end of the rotating rod is fixedly connected with the first driving wheel (83), the second driving wheel (84) is mounted on an output shaft of the double-shaft motor (71) far away from the first bevel gear (72), and the transmission belt (85) is wound between the first driving wheel (83) and the second driving wheel (84).

4. A low-dust soft blackboard according to claim 3, characterized in that it further includes a limiting mechanism (10), the limiting mechanism (10) includes a movable plate (101), a contact plate (102), an L-shaped pull rod (103), a sliding plate (105) and a first spring (106), the sliding grooves (104) are symmetrically formed on one side of the U-shaped plate (1) far away from the powder collecting groove (4) and located between the two side rotating shafts (3), the sliding plate (105) is slidably placed in the sliding groove (104), the first spring (106) is connected between one side of the sliding groove (104) far away from the soft blackboard (2) and one side of the sliding groove (104) far away from the soft blackboard (2), the movable plate (101) capable of supporting the soft blackboard (2) is installed between one side of the two movable plates (101) facing the powder collecting groove (4) and located in the soft blackboard (2), the contact plate (102) matched with the button (9) is arranged on one side of the movable plate (101) close to the double-shaft motor (71), the L-shaped pull rod (103) matched with the contact plate (102) is hinged to one side of the inner side of the u-shaped plate (1) close to the button (9), and the end part of the L-shaped pull rod is contacted with the contact plate (102).

5. A low-dust soft blackboard according to claim 4, characterized in that it also includes a cross slot rotary table (11), an air cylinder (12) and a second spring (13), the air cylinder (12) is distributed at intervals on one side of the cross hollow brush board (81) far away from the soft blackboard (2), the telescopic rod is sleeved with the second spring (13) for restoring, the cross slot rotary table (11) matched with the air cylinder (12) is installed on one side of the inside of the u-shaped board (1) close to the cross hollow brush board (81), and is contacted with the telescopic rod of the air cylinder (12).

6. A low-dust soft blackboard according to claim 5, further comprising a push plate (14) and an L-shaped rod (15), wherein the push plate (14) is slidably placed in the powder collecting groove (4), the L-shaped rod (15) is installed on the side of the push plate facing the soft blackboard (2), and the end of the L-shaped rod (15) is located outside the powder collecting groove (4).