Multifunctional dual-purpose integrated teaching blackboard and using method thereof

Abstract

The invention relates to the technical field of blackboards, in particular to a multifunctional dual-purpose integrated teaching blackboard and a using method thereof.The blackboard comprises a mounting base, a driving part, a positioning part, a control part, a flexible blackboard and a flexible screen, the driving part and the positioning part are both mounted on the mounting base, and the two ends of the flexible blackboard are connected with the two ends of the flexible screen respectively to form a closed loop; the closed loop bypasses the driving part and the positioning part, the driving part can drive the closed loop to rotate, a detection part capable of detecting the front size of the flexible screen is mounted on the mounting seat, the detection part, the driving part and the flexible screen are all connected with a control part, and the control part can control the resolution of the flexible screen. According to the integrated blackboard, by rotating the closed loop formed by the flexible blackboard and the flexible screen, the proportion between the flexible blackboard and the flexible screen on the front face of the blackboard can be changed at will according to needs, even the whole front face can be the flexible blackboard or the whole front face can be the flexible screen, and a teacher can switch the flexible blackboard and the flexible screen more conveniently in the teaching process.

Description

Technical Field

[0001] The present invention relates to the technical field of blackboards, and more specifically, to a multifunctional dual-purpose integrated teaching blackboard and a use method thereof. Background Art

[0002] With the improvement of science and technology, teachers generally use a combination of blackboard writing and electronic screen display to teach, so that students can better understand and digest the course content and improve teaching efficiency. Therefore, classrooms are often equipped with large blackboards and projection screens. When projection is used, the screen is unfolded, and when projection is not used, the screen is rolled up. However, since the screen will block the writing on the blackboard when it is unfolded, it needs to be switched back and forth when in use, affecting teaching efficiency.

[0003] In order to solve the problem of blocking the blackboard when using a projection screen for electronic screen display, the teaching blackboard of the prior art includes: a display screen; at least one pair of writing blackboards, which are arranged on the side of the display screen, and the pair of writing blackboards include a first blackboard and a second blackboard which are stacked, the first blackboard is located on the side of the writing surface of the second blackboard, and the second blackboard is arranged opposite to the wall on the side away from its writing surface; wherein the teaching blackboard has a first state and a second state, when the teaching blackboard is in the first state, at least one pair of writing blackboards is located on the side of the display screen, and the first blackboard is arranged flush with the display screen; when the teaching blackboard is in the second state, the first blackboard in at least one pair of writing blackboards moves to the side of the display surface of the display screen and blocks the display screen, and the second blackboard is arranged flush with the first blackboard. While achieving the teaching effect of the interactive display screen, the teaching blackboard can also meet the large-area use requirements of the writing blackboard, but the maximum display size of the display screen in the teaching blackboard has been fixed, and the area of ​​the display screen can only be reduced, and the area of ​​the display screen cannot be further expanded, and the screen ratio between the display screen and the blackboard cannot be switched at will according to teaching needs. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiency of the prior art that the ratio between the display screen and the blackboard cannot be switched arbitrarily according to teaching needs, and to provide a multifunctional dual-use integrated teaching blackboard and a method of using the same. The scheme of the present invention can arbitrarily adjust the ratio between the blackboard and the display screen according to actual needs in the teaching process, which brings great convenience to the teacher's teaching work and greatly improves the teaching efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A multifunctional dual-purpose integrated teaching blackboard is provided, comprising a mounting seat, a driving part, a positioning part, a control part, a flexible blackboard and a flexible screen. The driving part and the positioning part are both mounted on the mounting seat. The flexible screen and the flexible blackboard have the same size. Two ends of the flexible blackboard are respectively connected to two ends of the flexible screen to form a closed loop. The closed loop passes through the driving part and the positioning part. The driving part can drive the closed loop to rotate. A detection part capable of detecting the front size of the flexible screen is mounted on the mounting seat. The detection part, the driving part and the flexible screen are all connected to the control part. The control part can control the resolution of the flexible screen.

[0007] During the use of the integrated blackboard of the present invention, if it is necessary to adjust the ratio between the display screen on the front of the blackboard and the blackboard, the control unit sends a work command to the driving unit, and the driving unit drives the closed loop formed by the connection of the flexible blackboard and the flexible screen to rotate on the driving unit and the positioning unit, and the closed loop changes the ratio between the flexible screen on the front of the blackboard and the flexible blackboard when rotating. When the closed loop rotates until the flexible blackboard or the flexible screen on the front of the blackboard reaches the required size, the control unit sends a command to stop working to the driving unit, and the closed loop stops rotating. At this time, the detection unit detects the front size of the flexible screen in the blackboard and sends the detection result to the control unit. The control unit adjusts the resolution of the flexible screen according to the detection result obtained by the detection unit, changes the screen ratio of the flexible screen on the front of the blackboard, and enables the flexible screen on the front of the blackboard to fully display the target screen displayed by the teacher. If there is no need to change the screen ratio, the original resolution of the flexible screen can also be kept unchanged by the control unit.

[0008] The scroll-type dual-action integrated blackboard of the present invention can change the ratio between the flexible blackboard and the flexible screen on the front of the blackboard as needed by rotating the closed loop formed by the flexible blackboard and the flexible screen, and can even make the entire front a flexible screen or entirely a flexible blackboard. The proportion of the flexible blackboard and the flexible screen on the front of the blackboard can be adjusted at will, which makes it more convenient for teachers to switch between the flexible screen and the flexible blackboard during teaching.

[0009] Further, the mounting seat includes a base and a top seat, the base is provided with a supporting groove, the top seat is provided with a buckling groove, the two ends of the driving part and the positioning part are respectively installed in the supporting groove and the buckling groove, a support plate is also installed in the supporting groove, the two ends of the supporting plate are respectively provided with positioning grooves, the positioning part and the driving part are respectively located in the positioning grooves at the two ends of the supporting plate, the side of the supporting plate can abut against the inner side wall of the closed loop, the bottom of the closed loop is located in the supporting groove, and the top of the closed loop is located in the buckling groove. The base and the top seat are both provided with supporting grooves, which is convenient for positioning the closed loop and preventing the closed loop composed of the flexible screen and the flexible blackboard from detaching from the mounting seat. The setting of the supporting plate enables the supporting plate to provide supporting force for the flexible blackboard when writing on the blackboard, avoiding deformation of the flexible blackboard during the writing process. The supporting plate is made of nylon and is provided with honeycomb holes that can reduce weight, which can reduce the overall quality of the blackboard and facilitate the installation and fixation of the blackboard. The base and the top base are both provided with hanging ears, and the blackboard is hung on the wall of the classroom through the hanging ears on the base and the top base.

[0010] Further, the driving part includes a driving cylinder and a driving motor, the two ends of the driving cylinder are respectively located in the supporting groove and the snap-fit ​​groove and are rotatably connected with the base and the top seat, the driving motor is located in the inner cavity of the driving cylinder, the bottom of the driving motor is fixedly connected with the base, the inner cavity of the driving cylinder is fixedly installed with a first internal gear, the driving end of the driving motor is fixedly installed with a first external gear, the first external gear is meshed with the first internal gear, and the driving motor is connected with the control part. When the control part controls the driving part to work, the driving motor starts working first, driving the first external gear to rotate, the rotation of the first external gear drives the first internal gear meshed with it to rotate, the rotation of the first internal gear drives the driving cylinder fixedly connected with it to rotate between the top seat and the base, and when the driving cylinder rotates, the closed loop is driven by the friction between the driving cylinder and the closed loop.

[0011] Further, the positioning part includes a positioning cylinder and a positioning motor, the positioning cylinder is located on the mounting seat and is rotatably connected with the mounting seat, the positioning motor is located in the inner cavity of the positioning cylinder, the bottom of the positioning motor is fixedly connected with the base, the inner cavity of the positioning cylinder is fixedly installed with a second inner gear, the driving end of the positioning motor is fixedly installed with a second outer gear, the second outer gear is meshed with the second inner gear, and the positioning motor is connected with the control part. The positioning cylinder in the positioning part can be rotated on the mounting seat, which can reduce the friction between the positioning cylinder and the positioning cylinder during closed-loop motion, and extend the service life of the flexible screen and the flexible blackboard. When the positioning cylinder needs to rotate, the control part controls the positioning motor to start working, the positioning motor drives the second inner gear to rotate, the second inner gear rotates to drive the second outer gear meshed with it to rotate, and the second outer gear rotates to drive the positioning cylinder to rotate between the base and the top seat. When the positioning cylinder rotates, the friction between the positioning cylinder and the closed loop can also drive the closed-loop motion, which further provides power for the closed-loop motion. When the blackboard is debugged, the linear velocity of the positioning cylinder is slightly greater than the linear velocity of the driving cylinder, which is convenient for the front of the blackboard to be tensioned. When the blackboard is in use, the linear speed of the positioning cylinder is the same as the linear speed of the driving cylinder. This ensures that the movement speeds at both ends of the closed loop are the same, avoiding damage to the closed loop due to different movement speeds at different parts of the closed loop.

[0012] Furthermore, it also includes a blackboard eraser assembly, which includes a fixed column and a blackboard eraser, the two ends of the fixed column are respectively installed in the supporting groove and the buckling groove, the fixed column and the support plate are respectively located on both sides of the positioning part, the blackboard eraser is installed on the fixed column, and the blackboard eraser can erase the handwriting on the flexible blackboard. The blackboard eraser assembly also includes a bidirectional screw and a drive shaft, the bidirectional screw is located in the fixed column, the fixed column is provided with a slide groove, there are two blackboard erasers, both of which are located in the slide groove and slidably connected with the slide groove, the bidirectional screw is provided with two sliding nuts, the two sliding nuts are respectively threadedly connected with the thread segments of the bidirectional screw with opposite rotation directions, the two blackboard erasers are respectively fixedly connected with the two sliding nuts, the top of the bidirectional screw extends to the outside of the fixed column and is provided with a first synchronous wheel, the drive shaft is fixedly installed on the driving end of the positioning motor, and the top of the drive shaft is fixedly installed with a second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected by a transmission belt. After the blackboard eraser assembly is set, the writing on the blackboard can be erased by the blackboard eraser assembly, reducing the workload of teachers. When the driving motor in the positioning part is working, the driving end of the driving motor rotates to drive the driving shaft to rotate, and the driving shaft rotates to drive the second synchronous wheel on the driving shaft to rotate, and the second synchronous wheel drives the first synchronous wheel to rotate through the transmission belt, and the first synchronous wheel rotates to drive the bidirectional lead screw to rotate in the fixed column, and the bidirectional lead screw rotates to drive the sliding nut on it and the blackboard eraser on the sliding nut to slide in the slide groove, and the blackboard eraser erases the writing on the flexible blackboard by sliding. The radius of the second synchronous wheel is 10 times the radius of the first synchronous wheel, so that the blackboard eraser can slide quickly in the slide groove, improving the erasing efficiency of the blackboard eraser. The two blackboard erasers on the bidirectional lead screw move towards each other, and the erasing efficiency of the flexible blackboard is higher. The power source of the blackboard eraser comes from the positioning motor in the positioning part, and there is no need to set power for the blackboard eraser assembly additionally.

[0013] Further, the detection unit includes a camera and a coding sheet, the camera is installed at the bottom of the fixed column, the camera is fixedly connected to the control unit, there are several coding sheets, several coding sheets are linearly arranged at the bottom of the closed loop, each coding sheet is provided with an independent code, the camera can identify the code on the coding sheet, and the control unit can control the resolution of the flexible screen according to the coding information identified by the camera. When the control unit is working, the camera identifies the code on the coding sheet at the bottom of the closed loop, and the camera transmits the coding information to the control unit. The control unit determines the ratio of the flexible blackboard and the flexible screen on the front of the blackboard according to the coding information, and controls the resolution of the flexible screen according to the ratio of the flexible blackboard and the flexible screen. When the camera transmits the coding information at the connection between the flexible screen and the flexible blackboard to the control unit, it means that the flexible screen or the flexible blackboard completely occupies the front of the blackboard. At this time, when the control unit controls the driving motor in the driving unit and the positioning unit to work again, the driving motor in the driving unit and the positioning unit moves in the opposite direction. Installing the camera at the bottom of the fixed column can further save space. Correspondingly, the camera can also be installed at the top of the fixed column, and the coding sheet is installed at the top of the closed loop.

[0014] Furthermore, a flexible frame is provided at the bottom of the closed loop, the bottoms of the flexible blackboard and the flexible screen are connected to the flexible frame, and the encoding sheet is located on the flexible frame. The provision of the flexible frame can prevent the bottoms of the flexible screen and the flexible blackboard from being worn during the closed loop movement.

[0015] Furthermore, a magnetic plate is also installed on the front of the support plate, and a flexible magnetic strip is provided on the back of the flexible blackboard. There are several flexible magnetic strips, and the several flexible magnetic strips are arranged linearly on the flexible blackboard, and the flexible magnetic strip can be adsorbed on the magnetic plate. The two side walls of the support groove and the buckle groove are provided with several positioning holes arranged linearly along the axis of the support groove, and an elastic member is provided in the positioning hole, one end of the elastic member is fixedly connected to the bottom surface of the positioning hole, and the other end is provided with an abutment member that can abut against the closed loop. The setting of the magnetic plate enables the magnetic strip on the flexible blackboard to adhere to the magnetic plate, further reducing the gap between the flexible blackboard and the support plate, avoiding deformation of the flexible blackboard when writing on the flexible blackboard, and improving the writing experience. In order to make the closed loop further fit with the support plate, a magnetic plate can also be installed on the back of the support plate, and a flexible magnetic strip is installed on the back of the flexible screen, so that when the closed loop is moving, the closed loop can be closely attached to the magnetic plates on both sides of the support plate. After the abutment member abuts against the closed loop, the elastic member in the positioning hole is deformed by force. At this time, driven by the elastic member, the abutment member can fit tightly with the closed loop, further reducing the gap between the closed loop and the support plate. Since the closed loop needs to move, the end of the abutment member that abuts against the closed loop can be hemispherical or arc-shaped, which can reduce the friction between the abutment member and the closed loop, thereby reducing the forward resistance of the closed loop.

[0016] The present invention also provides a method for using a multifunctional dual-purpose integrated teaching blackboard. The method of the present invention is applicable to the above-mentioned multifunctional dual-purpose integrated teaching blackboard, and comprises the following steps:

[0017] Step 1: The control unit sends a working command to the driving unit, and the driving unit drives the closed loop formed by the flexible blackboard and the flexible screen to rotate on the driving unit and the positioning unit;

[0018] Step 2: After the closed loop rotates until the flexible blackboard or flexible screen reaches the required size, the control unit sends a stop command to the drive unit, and the closed loop stops rotating;

[0019] Step 3: The detection unit detects the front size of the flexible screen;

[0020] Step 4: The control unit adjusts the resolution of the flexible screen according to the detection results obtained by the detection unit and changes the picture ratio of the flexible screen.

[0021] The blackboard using method of the present invention can conveniently change the ratio between the flexible blackboard and the flexible screen on the front side of the blackboard, which brings great convenience to the teaching work of teachers and also greatly improves the teaching efficiency.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The blackboard of the present invention has a compact and reasonable structure and is easy to manufacture. By rotating the closed loop formed by the flexible blackboard and the flexible screen, the ratio between the flexible blackboard and the flexible screen on the front of the blackboard can be conveniently changed, which brings great convenience to the teacher's teaching work and greatly improves the teaching efficiency.

[0024] At the same time, the present invention also has the following advantages:

[0025] The base and the top seat on the blackboard of the present invention are both provided with supporting grooves, which are convenient for positioning the closed loop and preventing the closed loop composed of the flexible screen and the flexible blackboard from being separated from the mounting seat. The arrangement of the support plate enables the support plate to provide support force for the flexible blackboard when writing on the blackboard, thereby preventing the flexible blackboard from deforming during the writing process. The support plate is made of nylon and is provided with honeycomb holes that can reduce weight, which can reduce the overall mass of the blackboard and facilitate the installation and fixation of the blackboard.

[0026] The present invention is also provided with a blackboard eraser component, which can erase the writing on the blackboard and reduce the workload of teachers.

[0027] The flexible frame in the present invention can prevent the bottom of the flexible screen and the flexible blackboard from being worn during the closed-loop movement.

[0028] The present invention installs a magnetic plate on the back of the support plate and a flexible magnetic strip on the back of the flexible screen, so that when the closed loop is moving, the closed loop can fit tightly on the magnetic plates on both sides of the support plate, avoiding deformation of the flexible blackboard when writing on the flexible blackboard, thereby improving the writing experience.

[0029] The present invention further reduces the gap between the closed loop and the support plate by setting the abutment member and the positioning member, thereby further improving the writing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a multifunctional dual-purpose integrated teaching blackboard;

[0031] Figure 2 It is a structural schematic diagram of a base and a support plate of a multifunctional dual-purpose integrated teaching blackboard;

[0032] Figure 3 It is a structural schematic diagram of a base of a multifunctional dual-purpose integrated teaching blackboard;

[0033] Figure 4 It is a structural schematic diagram of a flexible blackboard, a flexible screen, a driving part, a positioning part and a blackboard eraser assembly of a multifunctional dual-purpose integrated teaching blackboard;

[0034] Figure 5 The figure is a schematic diagram of the internal structure of the driving part of a multifunctional dual-purpose integrated teaching blackboard;

[0035] Figure 6 It is a schematic diagram of the internal structure of the positioning part of a multifunctional dual-purpose integrated teaching blackboard;

[0036] Figure 7 A schematic diagram of the internal structure of a blackboard eraser assembly of a multifunctional dual-purpose integrated teaching blackboard;

[0037] Figure 7 A schematic diagram of the internal structure of a blackboard eraser assembly of a multifunctional dual-purpose integrated teaching blackboard;

[0038] Figure 8 It is a structural schematic diagram of a top seat of a multifunctional dual-purpose integrated teaching blackboard;

[0039] Fig. 9 It is a schematic diagram of the internal structure of the positioning hole of a multifunctional dual-purpose integrated teaching blackboard;

[0040] Fig.10 The present invention is a flow chart of a method for using a multifunctional dual-purpose integrated teaching blackboard.

[0041] In the attached drawings: 1. driving part; 2. positioning part; 3. flexible blackboard; 4. flexible screen; 5. base; 6. top seat; 7. hanging ear; 501. supporting groove; 601. buckling groove; 8. supporting plate; 101. driving cylinder; 102. driving motor; 103. first internal gear; 104. first external gear; 201. positioning cylinder; 202. positioning motor; 203. second internal gear; 204. second external gear; 9. blackboard eraser assembly; 901. fixed column; 902. blackboard eraser; 903. bidirectional lead screw; 904. driving shaft; 931. sliding nut; 911. slide groove; 905. first synchronous wheel; 906. second synchronous wheel; 907. transmission belt; 10. camera; 11. encoding plate; 12. flexible frame; 13. magnetic plate; 14. flexible magnetic strip; 15. Positioning hole; 16, elastic member; 17, abutment member; 502, bottom plate; 503, circumferential guard plate; 801, left arc groove; 802, right arc groove; 803, latch hole; 504, left short column; 505, right short column; 541, left positioning hole; 542, left locking hole; 551, right positioning hole; 552, right locking hole; 506, cylindrical guard plate; 507, support column; 571, Support hole; 602, lateral guard plate; 603, top plate; 604, cylindrical cover; 605, cover boss; 606, left latch; 607, left boss; 608, right latch; 609, right boss; 691, boss hole; 651, cover hole; 121, first positioning pin; 122, bottom locking hole; 221, second positioning pin; 222, motor locking hole; 18, electromagnetic clutch. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] This embodiment is a first embodiment of a multifunctional dual-purpose integrated teaching blackboard. Figure 1-Figure 9 As shown, it includes a mounting seat, a driving part 1, a positioning part 2, a control part, a flexible blackboard 3, and a flexible screen 4. The driving part 1 and the positioning part 2 are both mounted on the mounting seat. The flexible screen 4 and the flexible blackboard 3 have the same size. The two ends of the flexible blackboard 3 are respectively connected to the two ends of the flexible screen 4 to form a closed loop. The closed loop passes through the driving part 1 and the positioning part 2. The driving part 1 can drive the closed loop to rotate. A detection part that can detect the front size of the flexible screen 4 is installed on the mounting seat. The detection part, the driving part 1 and the flexible screen 4 are all connected to the control part, and the control part can control the resolution of the flexible screen 4.

[0046] Specifically, the mounting seat includes a base 5 and a top seat 6. The base 5 includes a bottom plate 502 and a circumferential guard plate 503 installed around the bottom plate 502. The bottom plate 502 and the circumferential guard plate 503 constitute a supporting groove 501 on the base 5. A hanging ear 7 is installed on the circumferential guard plate 503. There are two hanging ears 7 on the circumferential guard plate 503. The two hanging ears 7 are respectively installed at the two ends of the same side of the circumferential guard plate 503. A support plate 8 is arranged in the supporting groove 501. The support plate 8 is a nylon honeycomb structure. The support plate 8 is vertically installed on the bottom plate 502. Two latch holes 803 are arranged on the top surface of the support plate 8. The two latch holes 803 are respectively located at the two ends of the top surface of the support plate 8. The two ends of the support plate 8 are respectively provided with a left arc groove 801 and a right arc groove 802. The left arc groove 801 and the right arc groove 802 are positioning grooves on the support plate 8. A cylindrical left short column 504 and a right short column 505 are provided on the bottom plate 502. The left short column 504 is located in the left arc groove 801, and the circular cross-section of the left short column 504 and the arc cross-section of the left arc groove 801 are concentric circles, and there is a gap between the left short column 504 and the side wall of the left arc groove 801; the right short column 505 is located in the right arc groove 802, and the circular cross-section of the right short column 505 and the arc cross-section of the right arc groove 802 are concentric circles, and there is a gap between the right short column 505 and the side wall of the right arc groove 802. The left short column 504 is provided with a left positioning hole 541 and a left locking hole 542, and there are two left positioning holes 541. The two left positioning holes 541 are symmetrically arranged with the axis of the left locking hole 542 as the axis of symmetry, and the left locking hole 542 and the left short column 504 are coaxial; the right short column 505 is provided with a right positioning hole 551 and a right locking hole 552, and there are two right positioning holes 551. The two right positioning holes 551 are symmetrically arranged with the axis of the right locking hole 552 as the axis of symmetry, and the right locking hole 552 and the right short column 505 are coaxial.

[0047] Magnetic plates 13 are also installed on both side surfaces of the support plate 8, and a plurality of flexible magnetic strips 14 are linearly and equidistantly arranged in the inner circle of the closed loop, and the flexible magnetic strips 14 can be adsorbed on the flexible plate.

[0048] The base 5 also includes a cylindrical seat and a pillar. The cylindrical seat includes a cylindrical guard plate 506 and a supporting plate. The cylindrical guard plate 506 is installed around the supporting plate. The cylindrical guard plate 506 is welded and fixed to the circumferential guard plate 503. The cylindrical guard plate 506 is fixed to the side of the circumferential guard plate 503 close to the right short column 505. The support column 507 is installed on the supporting plate, and a support hole 571 is provided on the top surface of the support column 507.

[0049] Specifically, the top seat 6 includes a lateral guard plate 602, a top plate 603, a cylindrical cover 604 and a cover boss 605. The lateral guard plate 602 is installed around the top plate 603. The lateral guard plate 602 and the top plate 603 form a snap-fit ​​groove 601 on the top seat 6. The lateral guard plate 602 is also installed with a hanging ear 7. There are two hanging ears 7 on the lateral guard plate 602. The two hanging ears 7 are respectively installed at the two ends of the same side of the lateral guard plate 602. The hanging ears 7 on the lateral guard plate 602 and the hanging ears 7 on the circumferential guard plate 503 are located on the same plane. The top plate 603 is also provided with a left latch 606, a left boss 607, a right latch 608 and a right boss 609. When the top seat 6 is installed, the left latch 606 and the right latch 608 are respectively inserted into the two latch holes 803 on the support plate 8, the left boss 607 corresponds to the left short column 504, the right boss 609 corresponds to the right short column 505, and a boss hole 691 is provided at the center of the right boss 609. The cylindrical cover 604 is welded and fixed to the lateral guard plate 602. The cylindrical cover 604 is welded to the side of the lateral guard plate 602 close to the right boss 609. The cylindrical cover 604 is opposite to the cylindrical seat. The cover boss 605 is installed on the bottom surface of the cylindrical cover 604, and a cover hole 651 is provided at the center of the cover boss 605.

[0050] Specifically, the bottom of the closed loop is located in the supporting groove 501, and the top of the closed loop is located in the buckling groove 601. A plurality of positioning holes 15 are linearly and equidistantly arranged on the lateral guard plate 602 and the circumferential guard plate 503, and an elastic member 16 is arranged in the positioning hole 15, one end of the elastic member 16 is fixedly connected to the bottom surface of the positioning hole 15, and the other end is provided with an abutment member 17 that can abut against the closed loop, and the abutment member 17 is a steel ball.

[0051] Specifically, the driving unit 1 includes a driving cylinder 101 and a driving motor 102. The left boss 607 and the left short column 504 are respectively inserted into the two ends of the driving cylinder 101, and the driving cylinder 101 can rotate on the left boss 607 and the left short column 504. The driving cylinder 101 is located in the left arc groove 801. The driving motor 102 is located in the inner cavity of the driving cylinder 101. The bottom of the driving motor 102 is provided with a first positioning pin 121 and a bottom locking hole 122. There are two first positioning pins 121. The two first positioning pins 121 can be inserted into the two left positioning holes 541 respectively. The bottom locking hole 122 and the left locking hole 542 can be locked and connected by bolts to fix the driving motor 102 on the base 5. The inner cavity of the driving cylinder 101 is fixedly installed with a first internal gear 103, and the driving end of the driving motor 102 is fixedly installed with a first external gear 104, and the first external gear 104 is meshed with the first internal gear 103. The control unit is connected to the driving motor 102 , and the control unit can control the driving motor 102 to drive the driving cylinder 101 to rotate.

[0052] Specifically, the positioning part 2 includes a positioning cylinder 201 and a positioning motor 202. The left short column 504 is inserted into the bottom of the positioning cylinder 201 and the positioning cylinder 201 can rotate on the left short column 504. The positioning cylinder 201 is located in the right arc groove 802. The positioning motor 202 is located in the inner cavity of the positioning cylinder 201. The bottom of the positioning motor 202 is provided with a second positioning pin 221 and a motor locking hole 222. There are two second positioning pins 221. The two second positioning pins 221 can be inserted into the two right positioning holes 551 respectively. The motor locking hole 222 and the right locking hole 552 can be locked and connected by bolts to fix the positioning motor 202 on the base 5. The inner cavity of the positioning cylinder 201 is installed with a second internal gear 203, and the driving end of the driving motor 102 is installed with a second external gear 204. The second external gear 204 is meshed with the second internal gear 203. The control unit is connected to the positioning motor 202, and the control unit can control the positioning motor 202 to drive the positioning cylinder 201 to rotate.

[0053] Specifically, the blackboard eraser assembly 9 includes a fixed column 901, a blackboard eraser 902, a bidirectional lead screw 903 and a drive shaft 904. The drive shaft 904 is fixedly connected to the drive end of the positioning motor 202, and the top of the drive shaft 904 is fixedly connected to a step shaft, which extends to the outside of the positioning cylinder 201. The step shaft is sleeved with an electromagnetic clutch 18, and the electromagnetic clutch 18 and the step shaft are fixed by a flat key to prevent relative rotation between the two. The electromagnetic clutch 18 is sleeved with a second synchronous wheel 906, and the electromagnetic clutch 18 is connected to the control unit. The control unit can control the electromagnetic clutch 18 to cut off the power, so that the step shaft cannot drive the second synchronous wheel 906 to rotate. The top of the step shaft can extend into the boss hole 691. The top of the fixed column 901 extends into the cylindrical cover 604, and the bottom extends into the cylindrical seat. A slide groove 911 is provided on the fixed column 901, and the two blackboard erasers 902 are located in the slide groove 911. The two threaded sections of the bidirectional lead screw 903 are both provided with sliding nuts 931, and the two blackboard erasers 902 are respectively fixedly connected with the two sliding threads. The bottom of the bidirectional lead screw 903 is provided with a bottom shaft, which is inserted into the support hole 571 and can rotate in the support hole 571. The top of the bidirectional lead screw 903 is provided with a top shaft, and the top of the top shaft is inserted into the cover hole 651 and can rotate in the cover hole 651. The top shaft is sleeved with a first synchronous wheel 905, and the first synchronous wheel 905 is connected to the second synchronous wheel 906 through a transmission belt 907.

[0054] Specifically, the detection unit includes a camera 10 and a coding sheet 11. The camera 10 is installed at the bottom of the fixed column 901. The camera 10 is fixedly connected to the control unit. There are several coding sheets 11, which are linearly arranged at the bottom of the closed loop. Each coding sheet 11 is provided with an independent code. The camera 10 can identify the code on the coding sheet 11, and the control unit can control the resolution of the flexible screen 4 according to the coding information identified by the camera 10. When the camera 10 identifies the coding information between the flexible blackboard 3 and the flexible screen 4, the control unit cuts off the power to the electromagnetic clutch 18. When the control unit identifies that the drive motor 102 and the positioning motor 202 are reversed, the control unit also cuts off the power to the electromagnetic clutch 18.

[0055] Specifically, a flexible frame 12 is provided at the bottom of the closed loop, the bottoms of the flexible blackboard 3 and the flexible screen 4 are both connected to the flexible frame 12 , and the encoding sheet 11 is located on the flexible frame 12 .

[0056] The working principle or working process of this embodiment is as follows:

[0057] The blackboard is fixed on the wall of the classroom by the ear plates on the circumferential guard plate 503 and the lateral guard plate 602. Then, the control toolbox control unit sends a work command through a remote control, etc., controls the drive motor 102 and the positioning motor 202 to start working, drives the drive cylinder 101 and the positioning cylinder 201 to rotate, and the drive cylinder 101 and the positioning cylinder 201 rotate to drive the closed loop composed of the flexible blackboard 3 and the flexible screen 4 to start moving. In the early stage of the closed-loop movement, the linear velocity of the drive cylinder 101 and the positioning cylinder 201 can be deviated, so that the linear velocity of the positioning cylinder 201 is slightly greater than the linear velocity of the drive cylinder 101, which is convenient for the front of the blackboard to be tensioned. However, when the blackboard has been tensioned, it is necessary to ensure that the linear velocity of the positioning cylinder 201 is consistent with the linear velocity of the drive cylinder 101 to avoid fracture at the connection between the flexible blackboard 3 and the flexible screen 4. During the closed-loop movement, the proportion of the flexible screen 4 and the flexible blackboard 3 in the front of the blackboard can be adjusted. The camera 10 can identify the code of the coding sheet 11 on the flexible frame 12, and the camera 10 transmits the coding information to the control unit. The control unit determines the size of the flexible screen 4 on the front of the blackboard according to the coding information, and controls the resolution of the flexible screen 4 according to the size of the flexible screen 4. When the camera 10 transmits the coding information of the connection between the flexible screen 4 and the flexible blackboard 3 to the control unit, it means that the flexible screen 4 or the flexible blackboard 3 completely occupies the front of the blackboard. At this time, when the control unit controls the driving motor 102 in the driving unit 1 and the positioning unit 2 to work again, the driving motor 102 in the driving unit 1 and the positioning unit 2 moves in the opposite direction.

[0058] When the driving motor 102 and the positioning motor 202 rotate forward, the control unit energizes the electromagnetic clutch 18, and the rotation of the driving rod can drive the second driven wheel to rotate, and the second driven wheel drives the first synchronous wheel 905 to rotate through the transmission belt 907, and the rotation of the first synchronous wheel 905 drives the bidirectional lead screw 903 to rotate in the fixed column 901, and the rotation of the bidirectional lead screw 903 drives the sliding nut 931 thereon and the blackboard eraser 902 on the sliding nut 931 to slide in the slide groove 911, and the blackboard eraser 902 erases the writing on the flexible blackboard 3 by sliding. At the same time, when the camera 10 recognizes the coded information between the flexible blackboard 3 and the flexible screen 4, the control unit cuts off the power to the electromagnetic clutch 18, and the blackboard eraser 902 stops moving to avoid the wiping of the blackboard eraser 902 causing damage to the flexible screen 4. When the control unit recognizes that the driving motor 102 and the positioning motor 202 are reversed, the control unit also cuts off the power to the electromagnetic clutch 18, and the blackboard eraser 902 stops working to avoid repeated wiping.

[0059] The beneficial effects of this embodiment are as follows:

[0060] The scroll-type dual-function integrated blackboard of this embodiment can change the ratio between the flexible blackboard 3 and the flexible screen 4 on the front of the blackboard as needed by rotating the closed loop formed by the flexible blackboard 3 and the flexible screen 4. It can even make the entire front part flexible screen 4 or the entire flexible blackboard 3. The proportion of the flexible blackboard 3 and the flexible screen 4 on the front of the blackboard can be adjusted at will, which makes it more convenient for teachers to switch between the flexible screen 4 and the flexible blackboard 3 during teaching.

[0061] In the integrated blackboard of this embodiment, by configuring the support plate 8, the magnetic plate 13 and the abutment 17, the flexible blackboard 3 can be tightly attached to the support plate 8, thereby preventing the flexible blackboard 3 from being deformed by force during writing and improving the writing experience of the flexible blackboard 3.

[0062] The integrated blackboard of this embodiment is also provided with a blackboard eraser assembly 9, which can realize erasing of writing on the flexible blackboard 3 during the closed-loop motion process, eliminating the need for teachers to manually erase writing on the blackboard, thereby further reducing the workload of teachers.

[0063] Embodiment 2

[0064] This embodiment is a second embodiment of a multifunctional dual-purpose integrated teaching blackboard. This embodiment is similar to the first embodiment, except that the structure of the blackboard eraser assembly 9 in this embodiment is different from that of the blackboard eraser assembly 9 in the first embodiment.

[0065] Specifically, the blackboard eraser assembly 9 includes a fixed column 901 and a blackboard eraser 902. The right boss 609 and the right short column 505 are respectively inserted into the two ends of the fixed column 901. The blackboard eraser 902 is fixedly installed on the fixed column 901 on the side close to the closed loop. The blackboard eraser 902 is in the shape of a long strip, and the length of the blackboard eraser 902 is the same as the height of the flexible blackboard 3.

[0066] The beneficial effects of this embodiment are as follows: the blackboard eraser assembly 9 in this embodiment can clear the handwriting at various positions on the flexible blackboard 3 when the flexible blackboard 3 moves toward the back.

[0067] The other features, working principles and beneficial effects of this embodiment are the same as those of the first embodiment.

[0068] Embodiment 3

[0069] This embodiment is the third embodiment of a multifunctional dual-purpose integrated teaching blackboard. This embodiment is similar to the first embodiment, except that the structure of the detection part in this embodiment is different from that in the first embodiment.

[0070] Specifically, the detection unit includes a micro infrared ranging sensor and a positioning member, the positioning member is installed at the connection between the flexible blackboard 3 and the flexible screen 4 on the flexible frame 12, and the micro infrared ranging sensor is connected to the control unit.

[0071] The beneficial effects of this embodiment are as follows: in this embodiment, a micro infrared ranging sensor is used to measure the distance between the micro infrared ranging sensor and the positioning piece, and this distance is the width of the flexible blackboard 3 on the front of the blackboard. The control unit obtains the width of the flexible screen 4 according to the width of the flexible blackboard 3, and then adjusts the resolution of the flexible screen 4 according to the width of the front flexible screen 4.

[0072] The other features, working principles and beneficial effects of this embodiment are the same as those of the first embodiment.

[0073] Embodiment 4

[0074] This embodiment is an embodiment of a method for using a multifunctional dual-purpose integrated teaching blackboard. Fig.10 As shown, the blackboard use method of this embodiment is applicable to a multifunctional dual-purpose integrated teaching blackboard as described in any one of Embodiments 1 to 3, and includes the following steps:

[0075] Step 1: The control unit sends a working command to the driving unit 1, and the driving unit 1 drives the closed loop formed by the flexible blackboard 3 and the flexible screen 4 to rotate on the driving unit 1 and the positioning unit 2;

[0076] Step 2: After the closed loop rotates until the flexible blackboard 3 or the flexible screen 4 reaches the required size, the control unit sends a stop command to the driving unit 1, and the closed loop stops rotating;

[0077] Step 3: The detection unit detects the front size of the flexible screen 4;

[0078] Step 4: The control unit adjusts the resolution of the flexible screen 4 and changes the picture ratio of the flexible screen 4 according to the detection result obtained by the detection unit.

[0079] The beneficial effects of this embodiment are as follows:

[0080] The method for using the blackboard in this embodiment can conveniently change the ratio between the flexible blackboard and the flexible screen on the front of the blackboard, which brings great convenience to the teacher's teaching work and greatly improves the teaching efficiency.

[0081] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multifunctional dual-purpose integrated teaching blackboard, characterized in that: The invention comprises a mounting seat, a driving part (1), a positioning part (2), a control part, a flexible blackboard (3), and a flexible screen (4); the driving part (1) and the positioning part (2) are both mounted on the mounting seat; the flexible screen (4) and the flexible blackboard (3) have the same height; two ends of the flexible blackboard (3) are respectively connected to two ends of the flexible screen (4) to form a closed loop; the closed loop passes through the driving part (1) and the positioning part (2); the driving part (1) can drive the closed loop to rotate; a detection part capable of detecting the front size of the flexible screen (4) is mounted on the mounting seat; the detection part, the driving part (1) and the flexible screen (4) are all connected to the control part; and the control part can control the resolution of the flexible screen (4).

2. A multifunctional dual-purpose integrated teaching blackboard according to claim 1, characterized in that: The mounting seat comprises a base (5) and a top seat (6); the base (5) is provided with a supporting groove (501); the top seat (6) is provided with a buckling groove (601); both ends of the driving part (1) and the positioning part (2) are respectively mounted in the supporting groove (501) and the buckling groove (601); a supporting plate (8) is also mounted in the supporting groove (501); both ends of the supporting plate (8) are respectively provided with positioning grooves; the positioning part (2) and the driving part (1) are respectively located in the positioning grooves at both ends of the supporting plate (8); the side surface of the supporting plate (8) can abut against the inner side wall of the closed loop; the bottom of the closed loop is located in the supporting groove (501); and the top of the closed loop is located in the buckling groove (601).

3. A multifunctional dual-purpose integrated teaching blackboard according to claim 2, characterized in that: The driving unit (1) comprises a driving cylinder (101) and a driving motor (102); two ends of the driving cylinder (101) are respectively located in the supporting groove (501) and the snap-fit ​​groove (601) and are rotatably connected to the base (5) and the top seat (6); the driving motor (102) is located in the inner cavity of the driving cylinder (101); the bottom of the driving motor (102) is fixedly connected to the base (5); a first internal gear (103) is fixedly installed in the inner cavity of the driving cylinder (101); a first external gear (104) is fixedly installed at the driving end of the driving motor (102); the first external gear (104) is meshed with the first internal gear (103); and the driving motor (102) is connected to the control unit.

4. The multifunctional dual-purpose integrated teaching blackboard according to claim 2 is characterized in that: The positioning part (2) comprises a positioning cylinder (201) and a positioning motor (202); the positioning cylinder (201) is located on the mounting seat and is rotatably connected to the mounting seat; the positioning motor (202) is located in the inner cavity of the positioning cylinder (201); the bottom of the positioning motor (202) is fixedly connected to the base (5); a second internal gear (203) is fixedly installed in the inner cavity of the positioning cylinder (201); a second external gear (204) is fixedly installed at the driving end of the positioning motor (202); the second external gear (204) is meshed with the second internal gear (203); and the positioning motor (202) is connected to the control part.

5. The multifunctional dual-purpose integrated teaching blackboard according to claim 4 is characterized in that: The invention also comprises a blackboard eraser assembly (9), wherein the blackboard eraser assembly (9) comprises a fixed column (901) and a blackboard eraser (902), wherein two ends of the fixed column (901) are respectively installed in the supporting groove (501) and the buckling groove (601), the fixed column (901) and the supporting plate (8) are respectively located on two sides of the positioning portion (2), and the blackboard eraser (902) is installed on the fixed column (901), and the blackboard eraser (902) can erase the handwriting on the flexible blackboard (3).

6. A multifunctional dual-purpose integrated teaching blackboard according to claim 5, characterized in that: The blackboard eraser assembly (9) further comprises a bidirectional lead screw (903) and a drive shaft (904); the bidirectional lead screw (903) is located in the fixed column (901); the fixed column (901) is provided with a slide groove (911); there are two blackboard erasers (902); both of the two blackboard erasers (902) are located in the slide groove (911) and are slidably connected to the slide groove (911); the bidirectional lead screw (903) is provided with two sliding nuts (931); the two sliding nuts (931) are respectively connected to the bidirectional lead screw (903); The two blackboard erasers (902) are respectively fixedly connected to the two sliding nuts (931); the top end of the bidirectional lead screw (903) extends to the outside of the fixed column (901) and is provided with a first synchronous wheel (905); the driving shaft (904) is fixedly mounted on the driving end of the positioning motor (202); the top of the driving shaft (904) is fixedly mounted with a second synchronous wheel (906); the first synchronous wheel (905) and the second synchronous wheel (906) are connected via a transmission belt (907).

7. The multifunctional dual-purpose integrated teaching blackboard according to claim 5 is characterized in that: The detection unit comprises a camera (10) and a coding sheet (11); the camera (10) is mounted at the bottom of the fixed column (901); the camera (10) is fixedly connected to the control unit; there are a plurality of coding sheets (11); the plurality of coding sheets (11) are linearly arranged at the bottom of the closed loop; each coding sheet (11) is provided with an independent code; the camera (10) can identify the code on the coding sheet (11); and the control unit can control the resolution of the flexible screen (4) according to the code information identified by the camera (10).

8. The multifunctional dual-purpose integrated teaching blackboard according to claim 7 is characterized in that: A flexible frame (12) is provided at the bottom of the closed loop, the bottoms of the flexible blackboard (3) and the flexible screen (4) are both connected to the flexible frame (12), and the encoding sheet (11) is located on the flexible frame (12).

9. The multifunctional dual-purpose integrated teaching blackboard according to claim 2 is characterized in that: A magnetic plate (13) is also installed on the front of the support plate (8), and a flexible magnetic strip (14) is provided on the back of the flexible blackboard (3). There are a plurality of flexible magnetic strips (14), and the plurality of flexible magnetic strips (14) are linearly arranged on the flexible blackboard (3). The flexible magnetic strips (14) can be adsorbed on the magnetic plate (13); A plurality of positioning holes (15) linearly arranged along the axis of the supporting groove (501) are provided on both side walls of the supporting groove (501) and the locking groove (601), and an elastic member (16) is provided in the positioning hole (15), one end of the elastic member (16) is fixedly connected to the bottom surface of the positioning hole (15), and the other end is provided with an abutment member (17) capable of abutting against the closed loop.

10. A method for using a multifunctional dual-purpose integrated teaching blackboard, characterized in that: A multifunctional dual-purpose integrated teaching blackboard applicable to any one of claims 1 to 9, comprising the following steps: Step 1: The control unit sends a working command to the driving unit (1), and the driving unit (1) drives a closed loop formed by connecting the flexible blackboard (3) and the flexible screen (4) to rotate on the driving unit (1) and the positioning unit (2); Step 2: After the closed loop rotates until the flexible blackboard (3) or the flexible screen (4) reaches the required size, the control unit sends a stop command to the drive unit (1), and the closed loop stops rotating; Step 3: The detection unit detects the front size of the flexible screen (4); Step 4: The control unit adjusts the resolution of the flexible screen (4) according to the detection result obtained by the detection unit, and changes the picture ratio of the flexible screen.

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