CN213167513U - Dustless roller screen type flexible blackboard - Google Patents
Dustless roller screen type flexible blackboard Download PDFInfo
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- CN213167513U CN213167513U CN202021886014.5U CN202021886014U CN213167513U CN 213167513 U CN213167513 U CN 213167513U CN 202021886014 U CN202021886014 U CN 202021886014U CN 213167513 U CN213167513 U CN 213167513U
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- tensioning
- support frame
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- blackboard
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- 239000000428 dust Substances 0.000 claims description 41
- 238000005096 rolling process Methods 0.000 claims description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 28
- 230000006872 improvement Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 210000003800 pharynx Anatomy 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011090 solid board Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a dust-free roller screen type flexible blackboard, which comprises a main supporting frame, a closed circulation flexible blackboard component, a supporting and tensioning component and an electric control device; the closed circulation flexible blackboard component comprises a flexible blackboard body and support roll shafts, and the flexible blackboard body with an annular belt-shaped structure is sleeved on the two support roll shafts to form a closed circulation structure; the position of the rear end surface inside the main supporting frame, which corresponds to the rear layer flexible plate of the flexible black plate body annular belt structure, is provided with an erasing assembly; the supporting and tensioning assembly comprises a tensioning support frame arranged between a front layer flexible plate and a rear layer flexible plate of the flexible black plate body annular belt-shaped structure, the tensioning support frame is installed on the main support frame in a sliding fit mode, and a sliding driving part is further arranged between the tensioning support frame and the main support frame. The utility model discloses can be convenient for write and realize the adjustable of flexible blackboard tensioning state under the automatic prerequisite of cleaning, be in tensioning state during the use, be in the lax state when not using, and then realize prolonging the life of flexible blackboard.
Description
Technical Field
The utility model relates to a blackboard is used in the teaching, specifically is a flexible blackboard of dustless roller curtain formula belongs to teaching equipment technical field.
Background
The blackboard is a special noun, is not particularly a black board, and traditionally means a plane which can be repeatedly written by chalk, has a hard board surface and is mainly used for teaching. The blackboard is an indispensable teaching aid in daily teaching, the traditional blackboard is generally a hard solid board made of wood boards or ground glass, and the main components of the existing chalk for writing on the blackboard are calcium carbonate (limestone) and calcium sulfate (gypsum) which are not easy to decompose, so that more chalk dust can be generated when the chalk is erased by the blackboard eraser after the chalk is written on the blackboard board, on one hand, the chalk dust is more than 100 microns, and the particles are larger and heavier, so the chalk dust can fall on an object plane near the blackboard and on the ground after being temporarily floated in the air to cause environmental pollution; on the other hand, teachers or students inevitably inhale some chalk dust from nostrils, which can cause discomfort of nose, pharynx and throat and harm the health of teachers and students.
In order to overcome the defects of the traditional blackboard, the prior flexible blackboard is adopted in the prior art, the flexible blackboard is usually formed by sequentially arranging an ink layer and a frosted surface layer on a rubber substrate, realizing closed circulating rolling through the driving of a rolling shaft, and then realizing automatic wiping in the rolling process of the flexible blackboard through positioning and arranging a blackboard eraser on the flexible blackboard in a tensioning state. The flexible blackboard is in a tensioning state so as to facilitate writing and automatic wiping, but the flexible blackboard always in the tensioning state can cause fatigue of the rubber base material, and further can cause reduction of the service life of the flexible blackboard.
Disclosure of Invention
To the above problem, the utility model provides a flexible blackboard of dustless curtain formula that rolls can realize the adjustable of flexible blackboard tensioning state under the prerequisite of being convenient for write and automatically cleaning, is in tensioning state and is in the lax state when not using promptly when using, and then realizes prolonging the life of flexible blackboard.
In order to realize the aim, the dust-free roller screen type flexible blackboard comprises a main supporting frame, a closed type circulating flexible blackboard assembly, a supporting and tensioning assembly and an electric control device;
the main supporting frame is a box-shaped structure with an open front end face;
the closed circulation flexible blackboard assembly comprises a flexible blackboard body and a supporting roller shaft; two supporting roll shafts which are arranged in parallel in a split mode are positioned and installed in the front of the main supporting frame in a rolling matching mode, and at least one supporting roll shaft is provided with a roll shaft driving part; the flexible black plate bodies are connected end to end in a closed manner to form an annular belt-shaped structure, and the flexible black plate bodies with the annular belt-shaped structure are sleeved on the two supporting roll shafts to form a closed circulation structure; the erasing component is arranged on the rear end face inside the main supporting frame and corresponds to the position of the rear layer flexible plate of the flexible black plate body annular belt-shaped structure, the erasing component is arranged along the axial direction of the supporting roller shaft, and the erasing component comprises an erasing part and a chalk dust collecting part which are sequentially arranged along the front-back direction;
the supporting and tensioning assembly comprises a tensioning support frame, the tensioning support frame is arranged between a front layer flexible plate and a rear layer flexible plate of the flexible black plate body annular belt-shaped structure, the tensioning support frame is arranged on a main support frame in a sliding fit mode through a sliding guide structure arranged along the front-rear direction, a sliding driving part is also arranged between the tensioning support frame and the main support frame, a front writing support plate and a rear tensioning support part are arranged on the tensioning support frame, the front writing support plate positioned on the front end face of the tensioning support frame is of a flat plate structure matched with the breadth of the front layer flexible plate of the flexible black plate body annular belt-shaped structure, the rear tensioning support part comprises a clamping roller pair arranged on the rear end face of the tensioning support frame in a rolling fit mode, and the clamping roller pair comprises two clamping rollers arranged in, the clamping rollers are arranged in parallel with the space of the supporting roller shaft, and the rear layer flexible plate of the flexible black plate body penetrates through the gap between the two clamping rollers;
the electric control device comprises a controller, a flexible blackboard circulating rotation control loop and a tensioning support frame sliding control loop, wherein the controller is electrically connected with a roller shaft driving part and a sliding driving part of a support roller shaft respectively.
As a further improvement of the present invention, the erasing member is a pair of rolling brushes, the pair of rolling brushes includes an upper rolling brush and a lower rolling brush which are arranged at an interval in the vertical direction, and both the upper rolling brush and the lower rolling brush are provided with rolling brush drives, the rotating directions of the upper rolling brush and the lower rolling brush are set oppositely, and the upper rolling brush and the lower rolling brush are in a state of cleaning an area before the upper rolling brush and the lower rolling brush when rotating synchronously; the electric control device also comprises an erasing control loop, and the controller is respectively electrically connected with the rolling brush drive.
As a further improvement of the utility model, a negative pressure fan is arranged between the erasing component and the chalk dust collecting component and is electrically connected with the controller.
As the utility model discloses a further improvement scheme, chalk dust collecting part includes that the chalk dust that sets up along the left and right sides direction slope collects the slide, and the airtight intercommunication of chalk dust collection slide is connected at negative-pressure air fan's rear, and the bottom that the slide was collected to the chalk dust is equipped with the collection dirt filter bag.
As the utility model discloses an optimal scheme, the axis horizontal direction of bearing roller sets up, and two bearing roller roll respectively and cooperate the location to install in the inside upper end of main braced frame and lower extreme, and the guide structure that slides all sets up both ends position about the tensioning support frame with the drive disk assembly that slides.
As a further improvement of the utility model, the direction of moving towards of back layer flexbile plate of back tensioning supporting component along the flexible blackboard body sets up to two sets of at least, and erases the position setting between the adjacent two sets of back tensioning supporting component of subassembly correspondence on the inside rear end face of main tributary braced frame.
As a further improvement of the utility model, the two ends of the supporting roller shaft are provided with a limit boss structure.
As a further improvement of the utility model, the front writing support plate is made of iron material, or the inner surface of the flexible black plate body or the outer surface of the flexible black plate body is provided with a high-density iron glue layer.
Compared with the prior art, when the dust-free roller screen type flexible blackboard is in a normal blackboard writing state, the tensioning support frame is controlled to slide forwards to enable the front writing support plate to be attached to the front flexible plate of the flexible blackboard body and push the front flexible plate forwards, meanwhile, the two clamping rollers of the rear tensioning support component pull the rear flexible plate of the flexible blackboard body to move forwards synchronously, when the tensioning support frame slides forwards to a set distance, the flexible blackboard body is completely tensioned, and the front flexible plate of the flexible blackboard body is tensioned on the front writing support plate, so that blackboard writing with chalk can be performed on the front flexible plate; when the blackboard writing on the front layer flexible plate needs to be erased, the tensioning support frame is controlled to slide backwards to enable the front writing support plate to be separated from the front layer flexible plate of the flexible black plate body, meanwhile, two clamping rollers of the rear tensioning support component push the rear layer flexible plate of the flexible black plate body to move backwards and eject out synchronously, when the tensioning support frame slides backwards to a set distance, the flexible black plate body is tensioned by the rear tensioning support component, the rear layer flexible plate of the flexible black plate body is attached to an erasing component of the erasing component, then, a roller shaft driving component of the supporting roller shaft is controlled to act to enable the supporting roller shaft to drive the flexible black plate body to perform circular rolling motion, the blackboard writing is erased by the erasing component in the circular rolling motion process of the flexible black plate body, chalk dust is collected by the chalk dust collecting component, and dust-free automatic erasing is realized; when the blackboard is not used after being put on school, the tensioning support frame can be controlled to slide to the middle position of the front and back sliding stroke, and the flexible blackboard body is in the completely relaxed state without tensioning, so that the service life of the flexible blackboard is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1 in a normal writing position of the present invention;
FIG. 3 is an enlarged partial view of FIG. 2;
fig. 4 is a cross-sectional view a-a of fig. 1 in an erased state of the present invention;
fig. 5 is a partially enlarged view of fig. 4.
In the figure: 1. the blackboard eraser comprises a main supporting frame, 11, an erasing component, 12, a barrel supporting wheel set, 111, an erasing component, 112, a chalk dust collecting component, 113, a negative pressure fan, 2, a closed circulating flexible blackboard component, 21, a flexible blackboard body, 22, a supporting roller shaft, 3, a supporting tensioning component, 31, a tensioning supporting frame, 311, a front writing supporting plate, 312, a rear tensioning supporting component, 32, a sliding guide structure, 33 and a sliding driving component.
Detailed Description
The present invention will be further explained with reference to the drawings (hereinafter, the left direction of fig. 2 is referred to as the front).
As shown in fig. 1 and 2, the dust-free roller screen type flexible blackboard comprises a main supporting frame 1, a closed circulation flexible blackboard assembly 2, a supporting and tensioning assembly 3 and an electric control device.
The main supporting frame 1 is a box-shaped structure with an open front end face.
The closed circulation flexible blackboard component 2 comprises a flexible blackboard body 21 and a supporting roller shaft 22; two supporting roll shafts 22 which are arranged in parallel in a split mode are arranged in the front portion of the main supporting frame 1 in a rolling matching and positioning mode, at least one supporting roll shaft 22 is provided with a roll shaft driving part, and the roll shaft driving part can be a driving motor structure or other rotary driving structures such as a driving hydraulic motor structure; the flexible black plate body 21 is connected end to end in a closed mode and is of an annular belt-shaped structure, the flexible black plate body 21 of the annular belt-shaped structure is connected with the two supporting roll shafts 22 in a sleeved mode and is of a closed circulation structure, and the annular belt-shaped structure of the flexible black plate body 21 is formed into a front-layer flexible plate and a rear-layer flexible plate after being propped by the two supporting roll shafts 22. The position of the rear layer flexible plate corresponding to the annular band structure of the flexible black plate body 21 on the rear end face inside the main support frame 1 is provided with an erasing component 11, the erasing component 11 is arranged along the axial direction of the support roller shaft 22, the erasing component 11 comprises an erasing part 111 and a chalk dust collecting part 112 which are sequentially arranged along the front-back direction, the erasing part 111 can be of a common felt structure, and the chalk dust collecting part 112 can be of a common dust collection filter bag structure.
The supporting and tensioning assembly 3 comprises a tensioning support frame 31, the tensioning support frame 31 is arranged between a front layer flexible plate and a rear layer flexible plate of an annular belt structure of the flexible black plate body 21, the tensioning support frame 31 is arranged on the main support frame 1 in a sliding fit manner through a sliding guide structure 32 arranged along the front-rear direction, the sliding guide structure 32 can be a guide wheel and a guide slide rail structure which are arranged on the tensioning support frame 31 and the main support frame 1 in a fit manner, or other guide sliding structures such as dovetail protrusions and dovetail groove structures which are arranged on the tensioning support frame 31 and the main support frame 1 in a fit manner as shown in figure 1, a sliding driving part 33 is also arranged between the tensioning support frame 31 and the main support frame 1, the sliding driving part 33 can adopt a hydraulic cylinder or air cylinder structure, or an electric cylinder structure, or other sliding driving structures such as a gear rack transmission structure driven by an electric motor, the machine body end of the sliding driving part 33 is positioned, installed and connected with the main supporting frame 1, the telescopic end of the sliding driving part 33 is positioned, installed and connected with the tensioning supporting frame 31, the tensioning supporting frame 31 can slide and move in the front and back directions in the main supporting frame 1 through the sliding guide structure 32 by controlling the action of the sliding driving part 33, the tensioning supporting frame 31 is provided with a front writing supporting plate 311 and a back tensioning supporting part 312, the front writing supporting plate 311 on the front end surface of the tensioning supporting frame 31 is a flat plate structure matched with the breadth of the front layer flexible plate of the flexible black plate body 21 annular belt structure, the back tensioning supporting part 312 on the back end surface of the tensioning supporting frame 31 comprises a clamping roller pair which is arranged on the back end surface of the tensioning supporting frame 31 in a rolling fit manner, the clamping roller pair comprises two clamping rollers which are arranged in parallel and spaced in the front and back directions, and the clamping, the rear flexible plate of the flexible black plate body 21 is disposed through a gap between the two nip rollers.
The electric control device comprises a controller, a flexible blackboard circulating rotation control loop and a tensioning support frame sliding control loop, wherein the controller is respectively electrically connected with a roller shaft driving part and a sliding driving part 33 of the supporting roller shaft 22.
The main support frame 1 of the dust-free roller screen type flexible blackboard can be fixedly arranged on the wall of a classroom. In a normal writing state, as shown in fig. 2 and 3, the slip control circuit of the tension support frame is started first, the controller controls the slip driving component 33 to move to enable the tension support frame 31 to slip forwards, in the process that the tension support frame 31 moves forwards, the front writing support plate 311 is attached to the front flexible plate of the flexible blackboard body 21 and pushes the front flexible plate forwards, meanwhile, two clamping rollers of the rear tension support component 312 drive the rear flexible plate of the flexible blackboard body 21 to move forwards, after the tension support frame 31 slides forwards to a set distance, the flexible blackboard body 21 is completely tensioned, the front flexible plate of the flexible blackboard body 21 is tightened on the front writing support plate 311, and writing on the front flexible plate can be performed. When the blackboard writing on the front layer flexible board needs to be erased, as shown in fig. 4 and 5, the sliding control loop of the tensioning support frame is started first, the controller controls the sliding driving part 33 to move first to enable the tensioning support frame 31 to slide backwards, in the process that the tensioning support frame 31 moves backwards, the front writing support plate 311 is separated from the front layer flexible board of the flexible blackboard body 21, meanwhile, two clamping rollers of the rear tensioning support part 312 drive the rear layer flexible board of the flexible blackboard body 21 to move backwards and eject out, when the tensioning support frame 31 slides backwards to a set distance, the flexible blackboard body 21 is tensioned by the rear tensioning support part 312, and the rear layer flexible board of the flexible blackboard body 21 is attached to the erasing part 111 of the erasing assembly 11, then the blackboard circulating rotation control loop is started, the controller controls the roller driving part of the support roller 22 to enable the support roller 22 to drive the flexible blackboard body 21 to perform circulating rolling motion, in the flexible blackboard body 21 circulation rolling motion process, the original front layer flexible board that has written on blackboard rolls to the position of original back layer flexible board, and original back layer flexible board then rolls to the position of original front layer flexible board, simultaneously, the original front layer flexible board that has written on blackboard rolls the in-process, blackboard writing is promptly erased by erasing part 111, chalk dust is collected by chalk dust collecting part 112, realize dustless automatic erasing, regularly to chalk dust collecting part 112 clear up can. When the blackboard is not used after being put on a school, the controller can control the sliding driving part 33 to act to enable the tensioning support frame 31 to be located at the middle position of the front-back sliding stroke, and at the moment, the flexible blackboard body 21 is in a completely relaxed state without tensioning, so that the service life of the flexible blackboard is prolonged.
In order to realize better effect of erasing, further reduce dust pollution, as the utility model discloses a further improvement scheme, it is right to erase part 111, the round brush is to including the last round brush and the lower round brush that set up along upper and lower direction interval, and go up the round brush and all be equipped with the round brush drive with lower round brush, the opposite direction of rotation who goes up round brush and round brush down sets up, be the state that makes progress the round brush and sweep down the region before the round brush when going up round brush and round brush synchronous revolution down, as shown in figure 3, figure 5, go up round brush anticlockwise rotation, down round brush clockwise turning, electrically controlled device is still including erasing control circuit, the controller is connected with the round brush drive electricity respectively. When the blackboard writing needs to be erased, the erasing control loop is started before the flexible blackboard circulating rotation control loop is started, and the blackboard writing can be synchronously and rotationally erased by the upper rolling brush and the lower rolling brush in the rolling process of the flexible blackboard body 21.
In order to achieve a better chalk dust collecting effect and further reduce dust pollution, as a further improvement of the present invention, as shown in fig. 3 and 5, a negative pressure fan 113 is further disposed between the erasing part 111 and the chalk dust collecting part 112, and the negative pressure fan 113 is electrically connected to the controller. In the rolling process of the flexible blackboard body 21, chalk dust which is erased by the upper rolling brush and the lower rolling brush rotating synchronously is sucked into the chalk dust collecting component 112 by the negative pressure fan 113, so that a better chalk dust collecting effect can be realized.
In order to be convenient for the collection of chalk dust further, as the utility model discloses a further improvement scheme, chalk dust collecting component 112 includes that the chalk dust that sets up along left right direction slope collects the slide, and the airtight intercommunication of chalk dust collection slide is connected at negative-pressure air fan 113's rear, and the bottom that the slide was collected to the chalk dust is equipped with the collection dirt filter bag. The chalk dust sucked by the negative pressure fan 113 enters the chalk dust collecting slideway and can slide into the dust collecting filter bag under the action of self gravity.
This flexible blackboard of dustless roller curtain formula can adopt the rolling mode of vertical up-down direction, also can adopt the rolling mode of direction about the level, because the reason of flexible blackboard body 21 self gravity can cause and very easily takes place the off tracking when adopting the rolling mode of direction about the level, and adopt the rolling mode of vertical upper and lower direction can greatly reduced take place the probability of off tracking, therefore preferred the former, promptly, as the preferred scheme of the utility model, this flexible blackboard of dustless roller curtain formula adopts the rolling mode of vertical upper and lower direction, promptly, the axis horizontal direction of supporting roller 22 sets up, two supporting roller 22 roll respectively and cooperate the location to install in main braced frame 1 inside upper end and lower extreme, and the guide structure 32 that slides and drive part 33 that slides all sets up both ends position about tensioning support frame 31.
In order to guarantee that the back tensioning supporting component 312 can have sufficient tensioning stroke and realize the tensioning with firm drive flexible blackboard body 21, and then realize better tensioning effect and erase the effect, as the utility model discloses a further improvement scheme, back tensioning supporting component 312 sets up to two sets of at least along the trend direction of the back layer flexible board of flexible blackboard body 21, and erases the position setting between the subassembly 11 corresponds adjacent two sets of back tensioning supporting component 312 on the inside rear end face of main tributary braced frame 1. Taking a manner of rolling vertically up and down as an example, as shown in fig. 2 and 4, the rear tension support members 312 are provided in two sets in the up and down direction, and the wiping unit 11 is provided on the rear end surface inside the main support frame 1 at a position corresponding to between the two sets of the rear tension support members 312. The arrangement of the two sets of rear tensioning support parts 312 can ensure the pulling tensioning effect or the pushing tensioning effect on the rear flexible plate of the flexible black plate body 21.
In order to avoid the flexible blackboard body 21 off tracking appearing at the roll in-process, as the utility model discloses a further improvement scheme, the both ends of supporting roller shaft 22 are equipped with spacing boss structure.
In order to facilitate the magnetic positioning piece through magnetic nail, magnetic path etc. and fix small-size teaching tool or picture on this dustless roller screen type flexible blackboard, conduct the utility model discloses a further improvement scheme, preceding backup pad 311 of writing is the iron material, perhaps the internal surface of flexible blackboard body 21 or be equipped with high density iron glue film on the surface.
Claims (8)
1. A dust-free roller screen type flexible blackboard comprises a main supporting frame (1), a closed circulation flexible blackboard assembly (2), a supporting and tensioning assembly (3) and an electric control device; it is characterized in that the preparation method is characterized in that,
the main supporting frame (1) is a box-shaped structure with an open front end face;
the closed circulation flexible blackboard assembly (2) comprises a flexible blackboard body (21) and a supporting roller shaft (22); two supporting roll shafts (22) which are arranged in parallel in a split mode are arranged in a rolling matching mode and are arranged at the front portion of the main supporting frame (1) in a positioning mode, and at least one supporting roll shaft (22) is provided with a roll shaft driving part; the flexible black plate bodies (21) are connected end to end in a closed annular structure, and the flexible black plate bodies (21) in the annular structure are sleeved on the two supporting roll shafts (22) to form a closed circulation structure; an erasing component (11) is arranged on the rear end face inside the main supporting frame (1) corresponding to the rear layer flexible plate of the annular belt-shaped structure of the flexible black plate body (21), the erasing component (11) is arranged along the axial direction of the supporting roller shaft (22), and the erasing component (11) comprises an erasing part (111) and a chalk dust collecting part (112) which are sequentially arranged along the front-back direction;
the supporting and tensioning assembly (3) comprises a tensioning support frame (31), the tensioning support frame (31) is arranged between a front layer flexible plate and a rear layer flexible plate of an annular belt structure of the flexible black plate body (21), the tensioning support frame (31) is arranged on the main support frame (1) in a sliding fit mode through a sliding guide structure (32) arranged along the front-rear direction, a sliding driving part (33) is further arranged between the tensioning support frame (31) and the main support frame (1), a front writing support plate (311) and a rear tensioning support part (312) are arranged on the tensioning support frame (31), the front writing support plate (311) positioned on the front end face of the tensioning support frame (31) is of a flat plate structure matched with the breadth of the front layer flexible plate of the annular belt structure of the flexible black plate body (21), and the rear tensioning support part (312) comprises a clamping roller pair which is arranged on the rear end face of the tensioning support frame (31) in, the clamping roller pair comprises two clamping rollers which are arranged in parallel at intervals in the front-back direction, the clamping rollers are arranged in parallel with the space of the supporting roller shaft (22), and the rear layer flexible plate of the flexible black plate body (21) penetrates through the gap between the two clamping rollers;
the electric control device comprises a controller, a flexible blackboard circulating rotation control loop and a tensioning support frame sliding control loop, wherein the controller is electrically connected with a roller shaft driving part and a sliding driving part (33) of the supporting roller shaft (22) respectively.
2. The dust-free roller curtain type flexible blackboard according to claim 1, wherein the erasing member (111) is a pair of rollers including upper and lower rollers spaced in an up-down direction and each provided with a roller drive, the upper and lower rollers are rotated in opposite directions, and the upper and lower rollers are rotated in synchronization in a state of sweeping an area in front of the upper and lower rollers; the electric control device also comprises an erasing control loop, and the controller is respectively electrically connected with the rolling brush drive.
3. A dustless roller screen type flexible blackboard according to claim 2, wherein a negative pressure fan (113) is further provided between the erasing member (111) and the chalk dust collecting member (112), and the negative pressure fan (113) is electrically connected to the controller.
4. The dust-free roller screen type flexible blackboard according to claim 3, wherein the chalk dust collecting part (112) includes a chalk dust collecting slideway inclined in the left-right direction, the chalk dust collecting slideway is connected in a sealing and communicating manner at the rear of the negative pressure fan (113), and a dust collecting filter bag is arranged at the bottom end of the chalk dust collecting slideway.
5. A dust-free rolling curtain type flexible blackboard according to any one of claims 1 to 4, wherein the axes of the supporting roller shafts (22) are arranged horizontally, the two supporting roller shafts (22) are respectively installed at the upper end and the lower end inside the main supporting frame (1) in a rolling fit and positioning manner, and the sliding guide structure (32) and the sliding driving part (33) are both arranged at the left end and the right end of the tension supporting frame (31).
6. A roller curtain type flexible blackboard according to any one of claims 1 to 4, wherein the rear tension support members (312) are arranged in at least two sets along the running direction of the rear flexible board of the flexible blackboard body (21), and the erasing assembly (11) is arranged on the rear end face inside the main support frame (1) corresponding to the position between the two adjacent sets of rear tension support members (312).
7. A roller curtain type flexible blackboard according to any one of claims 1 to 4, characterised in that the two ends of the supporting roller shaft (22) are provided with limit boss structures.
8. A roller screen type flexible blackboard according to any one of claims 1 to 4, wherein the front writing support plate (311) is made of iron material, or the inner surface or outer surface of the flexible blackboard body (21) is provided with a high density iron glue layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886014.5U CN213167513U (en) | 2020-09-02 | 2020-09-02 | Dustless roller screen type flexible blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021886014.5U CN213167513U (en) | 2020-09-02 | 2020-09-02 | Dustless roller screen type flexible blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213167513U true CN213167513U (en) | 2021-05-11 |
Family
ID=75770494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021886014.5U Expired - Fee Related CN213167513U (en) | 2020-09-02 | 2020-09-02 | Dustless roller screen type flexible blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213167513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733787A (en) * | 2021-08-12 | 2021-12-03 | 江苏盛翔电子科技有限公司 | Multilayer combined type auxiliary screen blackboard |
-
2020
- 2020-09-02 CN CN202021886014.5U patent/CN213167513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733787A (en) * | 2021-08-12 | 2021-12-03 | 江苏盛翔电子科技有限公司 | Multilayer combined type auxiliary screen blackboard |
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Granted publication date: 20210511 |