CN211441719U

CN211441719U - Small self-cleaning folding teaching blackboard

Info

Publication number: CN211441719U
Application number: CN201921589532.8U
Authority: CN
Inventors: 陈旭
Original assignee: Ningguo Xijin Primary School
Current assignee: Ningguo Xijin Primary School
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-09-08
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a small-size foldable teaching blackboard of automatically cleaning belongs to teaching aid technical field. The blackboard comprises a blackboard main body, wherein at least one erasing plane which can be used for writing and a cleaning strip which can reciprocate along the vertical direction are arranged on the blackboard main body, and the erasing plane of the blackboard main body can be cleaned when the cleaning strip reciprocates along the vertical direction. The scribbling plane on the blackboard body can be used for writing with chalk, and the cleaning strip can wipe the scribbling plane in a reciprocating manner after writing so as to erase the handwriting on the scribbling plane.

Description

Small self-cleaning folding teaching blackboard

Technical Field

The utility model belongs to the technical field of teaching aid, a foldable teaching blackboard of small-size automatically cleaning is related to.

Background

The blackboard is not a black board, the blackboard is a plane which can be repeatedly written by chalk in the traditional sense, the board is hard and is mainly used for teaching, the blackboard is generally made of wood boards or ground glass and can be written on by specific writing materials such as chalk and the like, most of the blackboard is black, dark green, white or beige, after the blackboard is written by chalk, writing marks can be removed only by manually wiping the blackboard, time and labor are wasted, a mode of sucking dust away by negative pressure to clean is adopted in the prior art, but the mode is slow in cleaning and cannot be used under the condition of synchronously writing.

In order to overcome the defects of the prior art, people continuously explore and provide various solutions, for example, a Chinese patent discloses a bearing continuous oiling machine [ application number: 201810551335.0] comprises a plate body and a frame, wherein the plate body is embedded in the frame, and the dust collector further comprises a dust collecting and collecting head, a vacuum generator, an air compressor and a dust filtering and storing component, wherein the dust collecting and collecting head is arranged at the lower part of the plate body, the dust collecting and collecting head is connected with a vacuum generating port of the vacuum generator through a first pipe, an air outlet of the vacuum generator is connected with the dust filtering and storing component through a second pipe, the air compressor is provided with a high-pressure gas outlet, and the high-pressure gas outlet is connected with an air inlet of the vacuum generator through a third pipe so as to realize the venturi effect of the vacuum generator. The scheme has the advantages of being capable of efficiently collecting and absorbing dust formed when chalk writing on the blackboard is erased, simple and compact in structural design and low in manufacturing cost, but also has the defect that the chalk writing cannot be cleaned during writing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a small-size automatically cleaning folding teaching blackboard is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a small-size foldable teaching blackboard of automatically cleaning, includes the blackboard main part, the blackboard main part on be equipped with at least one can be used to write scribble the plane and can follow vertical direction reciprocating motion's clean strip, can clean the plane of scribbling of blackboard main part when clean strip along vertical direction reciprocating motion.

In the small self-cleaning folding teaching blackboard, the front side and the rear side of the blackboard body are painted planes, the blackboard body is sleeved with a frame body, the upper end and the lower end of the blackboard body are respectively connected with a rotating shaft, the axial lead of the rotating shaft is coincided with the central line of the blackboard body in the vertical direction, and the end part of the rotating shaft is inserted into the frame body and is connected with the frame body in a rotating matching manner.

In the small self-cleaning folding teaching blackboard, the front side and the rear side of the blackboard main body are flush with the front side and the rear side of the frame body, and the cleaning strips are arranged on the frame body.

In the small self-cleaning folding teaching blackboard, the frame body is further provided with a linear driver, the linear driver is provided with an output shaft capable of reciprocating along the vertical direction, and the end part of the output shaft of the linear driver is connected with the cleaning strip.

In the small self-cleaning folding teaching blackboard, one side of the cleaning strip, which is far away from the blackboard body, is also connected with a cleaning strip fixing block, the cleaning strip fixing block is connected with the end part of an output shaft of the linear driver, and the frame body is also provided with two limiting rods which penetrate through the cleaning strip fixing block and are movably connected with the cleaning strip fixing block.

In the foldable teaching blackboard of foretell small-size automatically cleaning, every gag lever post both ends still link respectively has a locating piece, and the locating piece is fixed on the framework.

In the small self-cleaning folding teaching blackboard, a plurality of clamping blocks which can reciprocate along the horizontal direction and the end parts of which can be inserted into the side wall of the blackboard body are arranged on two sides of the frame body.

In the above-mentioned foldable teaching blackboard of small-size automatically cleaning, the blackboard main part in be equipped with a plurality of draw-in groove that corresponds with the fixture block one-to-one, the fixture block tip inserts in the draw-in groove, the framework on be equipped with a plurality of with the fixture block match suitable No. two draw-in grooves, the fixture block set up in No. two draw-in grooves and with No. two draw-in groove swing joint.

In the small self-cleaning folding teaching blackboard, the section of the first clamping groove is arc-shaped, the section of the end part of the clamping block is also arc-shaped, the end part of the clamping block is abutted against the inner wall of the first clamping groove, one side of the clamping block, which is far away from the blackboard body, is also connected with a return spring, and one end of the return spring, which is far away from the blackboard body, is fixed on the inner wall of the second clamping groove.

In the small self-cleaning folding teaching blackboard, the frame body is internally provided with a servo motor, and the servo motor is connected with the rotating shaft.

Compared with the prior art, the utility model has the advantages of:

1. the scribbling plane on the blackboard body can be used for writing with chalk, and the cleaning strip can wipe the scribbling plane in a reciprocating manner after writing so as to erase the handwriting on the scribbling plane.

2. The front side and the rear side of the blackboard body are respectively provided with the scribbling planes, so that the usable area of the blackboard body is greatly increased, and the blackboard body can be switched between the two scribbling planes in a mode of rotating around a rotating shaft.

3. The cleaning strip is arranged at the rear side of the blackboard main body, when the coating plane at the front side needs to be wiped, the cleaning strip is rotated to the rear side for cleaning, and the coating plane at the rear side can be used again after being cleaned originally, so that the writing and the cleaning can be carried out synchronously.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the internal structure provided by the present invention;

fig. 2 is an external structural view of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic view showing the connection between the fixing block of the cleaning strip and the cleaning strip.

In the figure, a blackboard body 1, a cleaning strip 2, a painting plane 3, a frame 4, a linear driver 5, a cleaning strip fixing block 6, a limiting rod 7, a positioning block 8, a rotating shaft 9, a clamping block 10, a first clamping groove 11, a second clamping groove 12, a return spring 13 and a servo motor 14.

Detailed Description

As shown in fig. 1-4, a small-sized self-cleaning folding teaching blackboard comprises a blackboard main body 1, wherein at least one erasing plane 3 for writing and a cleaning strip 2 capable of reciprocating along the vertical direction are arranged on the blackboard main body 1, and the erasing plane 3 of the blackboard main body 1 can be cleaned when the cleaning strip 2 reciprocates along the vertical direction.

In this embodiment, the application plane 3 of the blackboard body 1 can be used for writing with chalk, and the cleaning bar 2 can wipe the application plane 3 back and forth after writing to erase the writing on the application plane 3.

It will be appreciated by those skilled in the art that the cleaning strip 2 may be driven by a cylinder, linear motor, human hand, or the like.

Both sides are around blackboard main part 1 scribble and write plane 3, just blackboard main part 1 on the cover be equipped with framework 4, blackboard main part 1 about both ends still link respectively and have a axis of rotation 9, axis of rotation 9 and the central line coincidence in the 1 vertical direction of blackboard main part of the axis of rotation and axis of rotation 9 tip insert in framework 4 and be connected with framework 4 normal running fit.

In this embodiment, as shown in fig. 1 to 4, the front and rear sides of the blackboard body 1 are the erasing planes 3, so that the usable area of the blackboard body 1 is greatly increased, and the blackboard body 1 can be switched between the two erasing planes 3 by rotating around the rotating shaft 9.

It will be understood by those skilled in the art that the cleaning bar 2 is provided on the rear side of the blackboard body 1, and when the writing surface 3 on the front side needs to be wiped, it is rotated to the rear side for cleaning, and the writing surface 3 on the rear side which has been cleaned can be put into use again, thereby enabling writing and cleaning to be performed simultaneously.

The front side and the rear side of the blackboard body 1 are flush with the front side and the rear side of the frame body 4, and the cleaning strips 2 are arranged on the frame body 4.

In this embodiment, as shown in fig. 1 to 4, the cleaning strip 2 is disposed on the frame 4 to prevent the cleaning strip 2 from occupying the space of the blackboard, and the front and rear sides of the blackboard main body 1 are flush with the front and rear sides of the frame 4 to facilitate the cleaning strip 2 to clean the blackboard.

The frame body 4 is also provided with a linear driver 5, the linear driver 5 is provided with an output shaft which can reciprocate along the vertical direction, and the end part of the output shaft of the linear driver 5 is connected with the cleaning strip 2.

In this embodiment, as shown in fig. 1 to 4, the linear driver 5 can drive the cleaning strip 2 to reciprocate along the vertical direction to clean the blackboard, so that people can work more easily.

It will be appreciated by those skilled in the art that the linear actuator 5 may be a cylinder or a linear motor, and preferably, a linear motor is used in the present embodiment.

The cleaning strip 2 is kept away from blackboard main part 1 one side and still has cleaning strip fixed block 6, cleaning strip fixed block 6 and linear actuator 5's output shaft end link to each other, framework 4 on still be equipped with two and run through cleaning strip fixed block 6 and with 6 swing joint's of cleaning strip fixed block gag lever post 7.

In this embodiment, as shown in fig. 1 to 4, the cleaning strip 2 is fixed on the cleaning strip fixing block 6, and the limiting rod 7 is matched with the cleaning strip fixing block 6 to prevent the cleaning strip 2 from shifting during movement.

Two ends of each limiting rod 7 are respectively connected with a positioning block 8, and the positioning blocks 8 are fixed on the frame body 4. In this embodiment, as shown in fig. 1 to 4, the positioning block 8 can position the cleaning strip 2 to prevent the cleaning strip 2 from separating from the limiting rod 7.

The two sides of the frame body 4 are also provided with a plurality of clamping blocks 10 which can reciprocate along the horizontal direction and the end parts of which can be inserted into the side wall of the blackboard main body 1.

In this embodiment, as shown in fig. 1 to 4, when the fixture block 10 is inserted into the sidewall of the blackboard body 1, the rotation of the blackboard during writing on the blackboard can be prevented, and when the fixture block 10 is separated from the blackboard, the blackboard can be rotated to switch the writing planes.

It will be appreciated by those skilled in the art that the cleaning strip 2 may be driven by a cylinder, linear motor, hand-engaged spring, or the like.

A plurality of first clamping grooves 11 which are in one-to-one correspondence with the clamping blocks 10 are formed in the blackboard main body 1, the end portions of the clamping blocks 10 are inserted into the first clamping grooves 11, a plurality of second clamping grooves 12 which are matched with the clamping blocks 10 are formed in the frame body 4, and the clamping blocks 10 are arranged in the second clamping grooves 12 and are movably connected with the second clamping grooves 12.

The section of the first clamping groove 11 is arc-shaped, the section of the end of the clamping block 10 is also arc-shaped, the end part of the clamping block 10 is abutted to the inner wall of the first clamping groove 11, the side, away from the blackboard body 1, of the clamping block 10 is further connected with a return spring 13, and one end, away from the blackboard body 1, of the return spring 13 is fixed on the inner wall of the second clamping groove 12.

In this embodiment, as shown in fig. 1 to 4, the first engaging groove 11 has an arc-shaped cross section, and the end of the clamping block 10 has an arc-shaped cross section, so that when the blackboard body 1 is pushed, the first engaging groove 11 cooperates with the end of the clamping block 10 to squeeze the clamping block 10 and move the clamping block 10 toward the second engaging groove 12, and when the first engaging groove 11 is separated from the clamping block 10, the reset spring 13 can drive the clamping block 10 to move toward the first engaging groove 11 for resetting.

Secondly, the end part of the fixture block 10 is abutted against the inner wall of the first clamping groove 11, so that the blackboard is prevented from loosening due to the pressure generated by chalk and the blackboard during writing.

A servo motor 14 is also arranged in the frame body 4, and the servo motor 14 is connected with the rotating shaft 9.

In this embodiment, as shown in fig. 1 to 4, the servo motor 14 can drive the rotation shaft 9 to rotate so as to switch the writing planes, and the servo motor 14 can control the rotation angle of the blackboard and can prevent the blackboard from loosening due to the pressure generated by the chalk and the blackboard during writing to a certain extent.

The utility model discloses a theory of operation is: when the scribble of lieing in the front side and write the plane and need clean, open servo motor 14, servo motor 14 can drive axis of rotation 9 and rotate thereby scribble the plane of writing with the rear side and switch over to the front side and write, and the scribble that lies in the rear side simultaneously and write the plane and can carry out synchronous cleanness, thereby improve the utilization ratio of blackboard, open linear actuator 5, thereby linear actuator 5 can drive cleaning strip 2 and clean the blackboard along vertical direction reciprocating motion, can make people's work lighter, blackboard main part 1 front and back both sides are scribble plane 3 and make blackboard main part 1's usable floor area greatly increased, and blackboard main part 1 accessible revolutes axis of rotation 9 pivoted modes and carries out two and scribble the switching of writing plane 3.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a foldable teaching blackboard of small-size automatically cleaning, includes blackboard main part (1), its characterized in that, blackboard main part (1) on be equipped with at least one can be used to write scribble write plane (3) and can follow vertical direction reciprocating motion's clean strip (2), can clean blackboard main part (1) scribble write plane (3) when clean strip (2) along vertical direction reciprocating motion.

2. The small self-cleaning folding teaching blackboard according to claim 1, wherein the front side and the rear side of the blackboard body (1) are both painted planes (3), the blackboard body (1) is sleeved with a frame body (4), the upper end and the lower end of the blackboard body (1) are respectively connected with a rotating shaft (9), the axial line of the rotating shaft (9) is coincident with the central line of the blackboard body (1) in the vertical direction, and the end part of the rotating shaft (9) is inserted into the frame body (4) and is connected with the frame body (4) in a rotating fit manner.

3. A small self-cleaning folding teaching blackboard according to claim 2, wherein the front and back sides of the blackboard body (1) are flush with the front and back sides of the frame body (4) and the cleaning strips (2) are arranged on the frame body (4).

4. A small self-cleaning folding teaching blackboard according to claim 3, wherein the frame (4) is further provided with a linear driver (5), the linear driver (5) is provided with an output shaft capable of reciprocating in the vertical direction, and the end of the output shaft of the linear driver (5) is connected with the cleaning strip (2).

5. The small self-cleaning folding teaching blackboard according to claim 4, wherein one side of the cleaning strip (2) far from the blackboard main body (1) is further connected with a cleaning strip fixing block (6), the cleaning strip fixing block (6) is connected with the end part of the output shaft of the linear driver (5), and the frame body (4) is further provided with two limiting rods (7) which penetrate through the cleaning strip fixing block (6) and are movably connected with the cleaning strip fixing block (6).

6. A small-sized self-cleaning folding teaching blackboard according to claim 5, wherein two ends of each limiting rod (7) are respectively connected with a positioning block (8), and the positioning blocks (8) are fixed on the frame body (4).

7. A small self-cleaning folding teaching blackboard according to any one of claims 2 to 6, wherein a plurality of blocks (10) capable of reciprocating in the horizontal direction and having ends capable of being inserted into the side walls of the blackboard body (1) are provided on both sides of the frame (4).

8. The small self-cleaning folding teaching blackboard according to claim 7, wherein a plurality of first slots (11) corresponding to the blocks (10) are arranged in the blackboard body (1), the ends of the blocks (10) are inserted into the first slots (11), a plurality of second slots (12) matched with the blocks (10) are arranged on the frame body (4), and the blocks (10) are arranged in the second slots (12) and movably connected with the second slots (12).

9. The small self-cleaning folding teaching blackboard according to claim 8, wherein the section of the first clamping groove (11) is circular arc-shaped, the section of the end of the clamping block (10) is circular arc-shaped, the end part of the clamping block (10) abuts against the inner wall of the first clamping groove (11), a return spring (13) is further connected to one side of the clamping block (10) far away from the blackboard body (1), and one end of the return spring (13) far away from the blackboard body (1) is fixed on the inner wall of the second clamping groove (12).

10. A small self-cleaning folding teaching blackboard according to any one of claims 2 to 6, wherein a servo motor (14) is further provided in the frame body (4), and the servo motor (14) is connected with the rotating shaft (9).