Multimedia teaching equipment

Abstract

The invention relates to the technical field of teaching appliances, in particular to multimedia teaching equipment. An adsorption assembly used for adsorbing dust is arranged on the first writing board, a cleaning brush is rotationally arranged on the second writing board, a matching part is arranged on the cleaning brush, a driving assembly connected with the matching part is arranged on the first sliding rail, and the driving assembly drives the cleaning brush to rotate through the matching part. The screen cleaning method and device are used for solving the technical problem that due to the fact that a cleaning brush accumulates dust for a long time and is not cleaned, the dust is not effectively cleaned in the cleaning process, but is redistributed to other areas of a screen, and the pollution of the screen is actually aggravated.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching tools, and in particular to multimedia teaching equipment. Background Art

[0002] Multimedia teaching equipment is a teaching tool that combines traditional blackboards with modern digital display technology. This type of equipment usually includes a traditional blackboard that can slide left and right, and a multimedia display screen fixed to the wall or bracket. Teachers can push and pull the blackboard as needed, switching between traditional chalk writing and digital content display, providing greater flexibility for classroom teaching.

[0003] In multimedia teaching equipment with push-pull blackboards, chalk dust often adheres to the screen, and long-term accumulation will seriously affect the viewing effect of the screen. Although the prior art provides a cleaning brush on the blackboard, which will sweep across the screen surface when the blackboard is pulled, this method has obvious defects. First, the dust stored in the bristles of the cleaning brush has not been cleaned for a long time, resulting in a gradual decrease in the cleaning effect. Secondly, since the same part of the bristles is always used for cleaning, this part of the bristles will wear faster than other parts, resulting in uneven cleaning effect. In addition, the part of the bristles that has accumulated dust does not clean the screen in the end, but redistributes the dust to other areas of the screen. Summary of the invention

[0004] The purpose of the present invention is to provide a multimedia teaching device to solve the technical problem that the cleaning brush accumulates dust for a long time and is not cleaned, resulting in the dust not being effectively removed during the cleaning process, but redistributing the dust to other areas of the screen, which actually aggravates the pollution of the screen.

[0005] The present invention is achieved through the following technical solutions: A multimedia teaching device includes a first writing board, a second writing board and first slide rails fixedly placed at both ends of the first writing board, wherein an adsorption component for adsorbing dust is arranged on the first writing board, a cleaning brush is rotatably arranged on the second writing board, a matching portion is arranged on the cleaning brush, and a driving component connected to the matching portion is arranged on the first slide rail, and the driving component drives the cleaning brush to rotate through the matching portion.

[0006] Furthermore, the adsorption component includes a shell arranged on the first writing board, the shell is arranged on a side of the first writing board close to the cleaning brush, the shell has a through hole for the bristles of the cleaning brush to enter, and an electrostatic adsorption material is arranged in the shell.

[0007] Furthermore, a baffle is hinged on the shell, and the baffle is used to cover the through hole. A trigger rod is arranged on the cleaning brush, and the length of the trigger rod is less than the length of the bristles in the cleaning brush.

[0008] Further, the electrostatic adsorption material includes an electrostatic adsorption pad.

[0009] Furthermore, the mating part includes a rotating rod that passes through the cleaning brush, and gears are respectively arranged at both ends of the rotating rod. The gears are located on the first slide rail. The driving assembly includes a placement hole opened on the side wall of the first slide rail, and an elastic member is arranged in the placement hole. The elastic member is connected to a moving block, and teeth that cooperate with the gears are arranged on the moving block. Part of the teeth are located outside the placement hole. An adjustment part is also arranged in the placement hole. When the moving block moves toward the direction of the elastic member, the adjustment part will move the teeth into the placement hole.

[0010] Furthermore, the adjustment part includes a first inclined surface set on the bottom wall of the placement hole, and the bottom of the moving block is set to a second inclined surface matching the first inclined surface. When the moving block moves toward the compression spring direction, the cooperation between the first inclined surface and the second inclined surface can enable the teeth to enter the placement hole.

[0011] Furthermore, the electrostatic adsorption pad is detachably disposed in the shell.

[0012] Furthermore, a dust collection box is included, and the dust collection box is located at the bottom of the shell.

[0013] Furthermore, the shell is made of transparent material.

[0014] Furthermore, the elastic member is a compression spring.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. The present application pulls the second writing board so that the cleaning brush on the second writing board contacts the shell on the first writing board, and an adsorbent material is arranged in the shell to adsorb the dust on the cleaning brush, thereby solving the problem of long-term accumulation of dust without cleaning, resulting in reduced efficiency during the cleaning process; 2. The present application realizes the automatic flipping of the cleaning brush through the cooperation of the moving block, the elastic member and the adjusting part, and the brush can only flip in the same direction when moving back and forth, so that the bristles of each part can clean the screen without the need for additional power source or manual operation, thereby improving the cleaning efficiency and convenience; 3. In the present application, a baffle is hinged on the shell, and the baffle is used to cover the through hole to prevent the collected dust from escaping or external dust from entering the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 A schematic diagram of the structure of the first writing board and the second writing board overlapping each other according to the present invention; Figure 2This is a schematic diagram of the structure of the second writing board covering the screen of the present invention; Figure 3 This is a schematic diagram of the internal matching structure of the first writing board and the second writing board of the present invention; Figure 4 This is a schematic diagram of the structure of the cleaning brush and the housing in contact with each other; Figure 5 It is a structural schematic diagram of the cleaning brush of the present invention moving toward the housing; Figure 6 is a side view of a second writing board of the present invention; Figure 7 A side view of the placement hole of the present invention; Figure 8 It is a top view of the placement hole of the present invention.

[0017] Marks and corresponding parts names in the attached drawings: 1-first writing board; 2-second writing board; 3-first slide rail; 4-second slide rail; 5-housing; 6-through hole; 7-electrostatic adsorption pad; 8-rotating rod; 9-cleaning brush; 10-gear; 11-placement hole; 12-moving block; 13-teeth; 14-first inclined plane; 15-second inclined plane; 16-compression spring; 17-screen. DETAILED DESCRIPTION

[0018] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary implementation modes of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0019] Embodiment 1: like Figures 1 to 8 As shown, a multimedia teaching device includes a first writing board 1, a second writing board 2, and first slide rails 3 fixedly placed at both ends of the first writing board 1. An adsorption component for adsorbing dust is provided on the first writing board 1, and a cleaning brush 9 is rotatably provided on the second writing board 2. A bearing seat can be connected to the second writing board 2, and both ends of the cleaning brush 9 are connected to the bearing seat through bearings to achieve free rotation. A matching portion is provided on the cleaning brush 9, and a driving component connected to the matching portion is provided on the first slide rail 3, and the driving component drives the cleaning brush 9 to rotate through the matching portion.

[0020] The first writing board 1, the second writing board 2 and the first slide rail 3 in the present application are all prior art, which is to fix a frame on the wall, symmetrically fix the first writing board 1 and slide the second writing board 2 on the left and right sides of the frame, respectively, and slide rail systems are respectively set at the upper and lower ends of the frame, and the slide rail systems include two parallel first slide rails 3 and second slide rails 4, the two ends of the first writing board 1 are fixedly set in the first slide rails 3, and the second writing board 2 is slidably set in the second slide rails 4. Push-pull blackboards can be consulted online.

[0021] At present, in multimedia teaching equipment with push-pull blackboards, chalk dust often adheres to the screen 17, and long-term accumulation will seriously affect the viewing effect of the screen 17. Although the prior art provides a cleaning brush 9 on the blackboard, the cleaning brush 9 will sweep across the surface of the screen 17 when the blackboard is pulled, but the dust stored in the bristles of the cleaning brush 9 has not been cleaned for a long time, resulting in a gradual reduction in the cleaning effect.

[0022] Therefore, in the present application, the second writing board 2 overlaps with most of the area of ​​the first writing board 1, and the cleaning brush 9 is in contact with the adsorption component. When the second writing board 2 is needed, the two second writing boards 2 are first pulled relative to each other to separate the cleaning brush 9 from the adsorption component. As the second writing board 2 continues to move, the driving assembly disposed on the first slide rail 3 starts to drive the cleaning brush 9 to rotate through the mating part, so that the bristles on the other side of the cleaning brush 9 face the side that is about to enter the screen 17, that is, the bristles of the cleaning brush 9 are reversed before contacting the screen 17, and then the cleaning brush 9 sweeps across the surface of the screen 17 to remove most of the dust. After use, the second writing board 2 is pushed back to its original position, and the cleaning brush 9 sweeps across the screen 17 again for secondary cleaning to effectively remove residual dust. It should be mentioned here that an adsorption component is provided on the first writing board 1 to adsorb dust on the cleaning brush 9 to prevent the dust from re-contaminating the screen 17; secondly, the matching part on the cleaning brush 9 is connected to the driving component on the first slide rail 3, and the cleaning brush 9 is rotated after the cleaning brush 9 completely leaves the adsorption component, so as to change the cleaning surface and shake off the dust; thirdly, the existing push-pull blackboard structure is used to achieve cleaning, and the cleaning brush 9 sweeps the screen 17 twice during the push-pull process to improve the cleaning effect; finally, the adsorption component cooperates with the cleaning brush 9 to adsorb dust on the cleaning brush 9 when the cleaning brush 9 contacts the adsorption component. The driving component can be set as a motor.

[0023] It should be noted that the adsorption component includes a shell 5 arranged on the first writing board 1, and the shell 5 is arranged on the side of the first writing board 1 close to the cleaning brush 9. The shell 5 is provided with a through hole 6 for the bristles of the cleaning brush 9 to enter, and an electrostatic adsorption material is arranged in the shell 5. The shell 5 close to the side of the cleaning brush 9 arranged in the present application is provided with a through hole 6, allowing the bristles of the cleaning brush 9 to enter the interior. Electrostatic adsorption material is arranged in the shell 5, and dust particles are adsorbed by electrostatic force. When the second writing board 2 is pushed back to its original position, the bristles of the cleaning brush 9 enter the interior of the shell 5 through the through hole 6, and the dust carried on the bristles is attracted and captured by the electrostatic adsorption material. As the use time increases, the electrostatic adsorption material continuously collects the dust brought by the cleaning brush 9 to prevent the dust from re-contaminating the screen 17. This design effectively collects and stores dust and reduces the possibility of secondary pollution.

[0024] It should be noted that a baffle is hinged on the housing 5 , and the baffle is used to cover the through hole 6 . A trigger rod is provided on the cleaning brush 9 , and the length of the trigger rod is less than the length of the bristles of the cleaning brush 9 .

[0025] In the present application, when the cleaning brush 9 is not in contact with the adsorption component, the through hole 6 is closed to prevent the collected dust from escaping or external dust from entering the housing 5. When the cleaning brush 9 approaches, the bristles of the cleaning brush 9 contact the baffle plate and push the baffle plate inward. Since the baffle plate is hinged, the baffle plate will be opened, allowing the bristles to enter the interior of the housing 5.

[0026] The purpose of setting the trigger rod is that when the bristles are too soft to push the baffle to move, the trigger rod contacts the baffle to drive the baffle to move toward the inside of the shell 5. The length of the trigger rod is smaller than the length of the bristles of the cleaning brush 9. When the bristles of the cleaning brush 9 are facing the screen 17, this part of the trigger rod is also facing the screen 17. Since the trigger rod is smaller than the bristles of the cleaning brush 9, the trigger rod does not contact the screen 17 when the cleaning brush 9 cleans the screen 17.

[0027] The electrostatic adsorption pad 7 utilizes the electrostatic adsorption principle to effectively capture dust particles brought by the cleaning brush 9. This not only prevents secondary pollution of dust, but also improves the durability of the cleaning effect; secondly, the sealing performance is good, which prevents dust leakage.

[0028] It should be noted that the electrostatic adsorption material includes an electrostatic adsorption pad 7. Chalk dust is usually composed of tiny particles, which are charged during the friction process. When the cleaning brush 9 approaches or contacts the electrostatic adsorption pad 7, the electrostatic force attracts the dust particles. The dust particles are transferred from the cleaning brush 9 to the surface of the electrostatic adsorption pad 7 with the opposite charge. The dust particles are firmly adsorbed on the surface of the adsorption pad by the electrostatic force to prevent them from being lifted up again.

[0029] It should be noted that the electrostatic adsorption pad 7 is detachably arranged in the housing 5. The user can easily take out the adsorption pad full of dust for cleaning or replacement without disassembling the entire housing 5, which saves maintenance time and ensures the continuity of the adsorption effect.

[0030] It should be noted that a dust box is also included, and the dust box is located at the bottom of the shell 5. The dust box is arranged at the bottom of the shell 5 to provide additional storage space for dust collection. When the dust adsorbed by the electrostatic adsorption pad 7 falls off, because the shell 5 is placed vertically and the integrated box is arranged at the bottom of the shell 5, the dust will fall into the dust box, and the dust box can effectively collect the dust to prevent it from being scattered in the teaching environment. This arrangement not only increases the capacity of dust collection, but also facilitates daily cleaning.

[0031] It should be noted that the housing 5 is made of transparent material. The user can visually observe the use of the electrostatic adsorption pad 7 and the dust box, and promptly determine whether they need to be cleaned or replaced. The cleaning brush 9 can be removed for observation first, and the cleaning brush 9 is also detachable.

[0032] Embodiment 2: The mating part includes a rotating rod 8 that passes through the cleaning brush 9, and gears 10 are respectively arranged at both ends of the rotating rod 8. The gear 10 is located on the first slide rail 3. The driving assembly includes a placement hole 11 opened on the side wall of the first slide rail 3. An elastic member is arranged in the placement hole 11. The elastic member is connected to a moving block 12. The moving block 12 is provided with teeth 13 that cooperate with the gear 10. A part of the teeth 13 is located outside the placement hole 11. An adjustment part is also arranged in the placement hole 11. When the moving block 12 moves toward the direction of the elastic member, the adjustment part will move the teeth 13 into the placement hole 11.

[0033] The driving assembly in Example 2 is preferably configured as a placement hole 11 opened on the first slide rail 3, and the connection between the moving block 12 and the elastic member enables the moving block 12 to move by the thrust received. For example, the initial state is that the second writing board 2 and the first writing board 1 overlap. It should be mentioned here that in the prior art, there is a gap in this overlap because the two slide rails are arranged in parallel, so one slide rail is in front and the other slide rail is in the back. The second writing board 2 slides in a direction away from the first writing board 1 (that is, moves toward the screen 17). During the sliding process, before contacting the screen 17, the gear 10 provided on the second writing board 2 will contact the teeth 13, and the gear 10 will mesh with the teeth 13. Since the moving block 12 is connected to the elastic member, and the unconnected part of the moving block 12 is in contact with the inner wall of the placement hole 11, the second writing board 2 slides in a direction away from the first writing board 1. After the gear 10 meshes with the teeth 13, the moving block 12 cannot move, and the teeth 13 do not move, causing the gear 10 itself to flip, thereby driving the cleaning brush 9 to flip. Then, the flipped cleaning brush 9 continues to move toward the screen 17 until the cleaning brush 9 contacts the screen 17 and cleans it.

[0034] When the second writing board 2 approaches the first writing board 1, the gear 10 on the second writing board 2 meshes with the teeth 13 again, and at this time, the teeth 13 are pushed to drive the moving block 12 to move toward the elastic member, and the elastic member here is the compression spring 16. The movement of the moving block 12 enables its adjustment part to move the teeth 13 into the placement hole 11. After the teeth 13 enter the placement hole 11, the teeth 13 are separated from the gear 10. During the whole process, the gear 10 will not rotate, and the second writing board 2 continues to move toward the first writing board 1 until the bristles on the cleaning brush 9 are matched with the housing 5.

[0035] For ease of understanding, this application gives an example again: In the initial state, the second writing board 2 is close to the first writing board 1. When the second writing board 2 starts to move away from the first writing board 1, the cleaning brush 9 is driven by the gear 10 to rotate for the first time, so that the clean surface faces the screen 17 and the contaminated surface faces the shell 5 on the first writing board 1. Subsequently, the cleaning brush 9 performs a cleaning operation on the surface of the screen 17. At this time, the cleaning brush 9 forms two contaminated areas: one side is the contaminated surface originally facing the first writing board 1, and the other side is the newly contaminated surface that has just been cleaned. Then, the second writing board 2 starts to move toward the first writing board 1. When the cleaning brush 9 approaches the first writing board 1, the contaminated surface originally facing the shell 5 contacts the shell 5 for cleaning. This is a back and forth movement of the second writing board 2, and one back and forth movement will only cause the gear 10 to rotate once. After the cleaning is completed, the second writing board 2 moves away from the first writing board 1 again, and the cleaning brush 9 is driven by the gear 10 to rotate, so that the remaining contaminated surface faces the shell 5 of the first writing board 1. Through this reciprocating motion and the periodic rotation of the cleaning brush 9, the two working surfaces of the cleaning brush 9 are alternately used and cleaned, ensuring cleaning efficiency and continuity. At the end of each cycle, the cleaning brush 9 returns to its initial state and is ready for the next round of cleaning, thereby ensuring the continuity and stability of the cleaning work.

[0036] As mentioned above, a cleaning brush 9 is provided on the second writing board 2, and a rotating rod 8 is provided through the cleaning brush 9, and the rotating rod 8 is rotatable, and the gear 10 is fixedly provided on the rotating rod 8. When the gear 10 moves toward the tooth 13 on the first slide rail 3, the gear 10 is suspended in the first slide rail 3 when it is not meshed with the tooth 13 (please refer to Figure 6 ), when the gear 10 contacts the tooth 13 (the tooth 13 is in the motion trajectory of the gear 10, so it is bound to contact), the gear 10 meshes with the tooth 13, and one end of the tooth 13 is in contact with the inner wall of the placement hole 11, so this end cannot move, and the other end of the tooth 13 is connected to an elastic member, so the tooth 13 at this end can move. Since the tooth 13 cannot move and the gear 10 needs to continue to move forward, the meshing point between the teeth of the gear 10 and the tooth 13 becomes a fulcrum. Under the action of this fulcrum, the gear 10 cannot move in a straight line, but can rotate around this fulcrum, which is the flipping process of the gear 10. The center of gravity of the gear 10 will move to the other side of the fulcrum. Under the combined action of gravity and continuous forward force, the gear 10 will flip around the meshing point, thereby passing over the tooth 13 and continuing its motion path.

[0037] The adjustment part includes a first inclined surface 14 set on the bottom wall of the placement hole 11, and the bottom of the moving block 12 is set to a second inclined surface 15 that cooperates with the first inclined surface 14. When the moving block 12 moves toward the direction of the compression spring 16, the cooperation between the first inclined surface 14 and the second inclined surface 15 can enable the tooth 13 to enter the placement hole 11.

[0038] The initial state of the teeth 13 is that part of the teeth 13 is exposed outside the placement hole 11. When the moving block 12 moves, the moving block 12 moves from the high point of the first inclined surface 14 to the low point of the first inclined surface 14. Due to the cooperation of the first inclined surface 14 and the second inclined surface 15, the teeth 13 are not skewed when slowly entering the placement hole 11, but are in a vertical downward movement state until the teeth 13 do not hinder the gear 10, then the gear 10 remains stationary, and the second writing board 2 continues to move toward the first writing board 1. When the second writing board 2 reaches the limit of movement, the cleaning brush 9 of the second writing board 2 and the housing 5 of the first writing board 1 are also cooperated. The second writing board 2 can only be flipped once when moving back and forth, and can only be flipped in the same direction, so that the bristles of each part can clean its screen 17, without the need for additional power sources or manual operations, thereby improving cleaning efficiency and convenience. It not only ensures that the cleaning surface of the cleaning brush 9 can be automatically changed each time it is used, thereby improving the cleaning effect, but also helps to shake off the dust attached to the bristles through the centrifugal force during the turning process, thereby further enhancing the cleaning effect.

[0039] It should be mentioned here that the bristles of the cleaning brush 9 of the present application are designed to be soft, the main purpose of which is to gently clean the screen 17 without causing scratches. This softness means that the bristles will bend easily when they come into contact with the screen 17. When the soft bristles come into contact with the screen 17, they will bend in all directions. This bending will disperse the force acting on each bristle, so that there is not enough concentrated force to cause the entire cleaning brush 9 to rotate. Another is the softness of the bristles, and the friction between it and the screen 17 is actually very small. This tiny friction is not enough to overcome the weight of the cleaning brush 9 itself.

[0040] It should be noted that the elastic member is a compression spring 16. The resistance to the turning of the driving gear 10 requires at least A, and the maximum damping of the compression spring 16 is B. The present application satisfies A greater than B, so there is no obstacle to the turning of the gear 10.

[0041] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multimedia teaching device, comprising a first writing board (1), a second writing board (2) and two first slide rails (3), characterized in that: An adsorption component for adsorbing dust is arranged on the first writing board (1), a cleaning brush (9) is rotatably arranged on the second writing board (2), a matching portion is arranged on the cleaning brush (9), and a driving component connected to the matching portion is arranged on the first slide rail (3), and the driving component drives the cleaning brush (9) to rotate through the matching portion.

2. A multimedia teaching device according to claim 1, characterized in that: The adsorption component comprises a shell (5) arranged on a first writing board (1), the shell (5) being arranged on a side of the first writing board (1) close to a cleaning brush (9), the shell (5) being provided with a through hole (6) for facilitating the entry of bristles of the cleaning brush (9), and an electrostatic adsorption material being arranged in the shell (5).

3. A multimedia teaching device according to claim 2, characterized in that: A baffle is hingedly connected to the housing (5), the baffle being used to cover the through hole (6), and a trigger rod is provided on the cleaning brush (9), the length of the trigger rod being less than the length of the bristles in the cleaning brush (9).

4. A multimedia teaching device according to claim 2, characterized in that: The electrostatic adsorption material comprises an electrostatic adsorption pad (7).

5. A multimedia teaching device according to claim 1, characterized in that: The mating portion comprises a rotating rod (8) penetrating the cleaning brush (9), gears (10) are respectively arranged at both ends of the rotating rod (8), the gear (10) is located on the first slide rail (3), the driving assembly comprises a placement hole (11) opened on the side wall of the first slide rail (3), an elastic member is arranged in the placement hole (11), the elastic member is connected to a moving block (12), the moving block (12) is provided with teeth (13) mating with the gear (10), a part of the teeth (13) is located outside the placement hole (11), and an adjustment portion is also arranged in the placement hole (11), when the moving block (12) moves towards the elastic member, the adjustment portion moves the teeth (13) into the placement hole (11).

6. A multimedia teaching device according to claim 5, characterized in that: The adjustment portion comprises a first inclined surface (14) arranged on the bottom wall of the placement hole (11), and a second inclined surface (15) arranged at the bottom of the moving block (12) to cooperate with the first inclined surface (14); when the moving block (12) moves in the direction of the compression spring (16), the cooperation between the first inclined surface (14) and the second inclined surface (15) enables the tooth (13) to enter the placement hole (11).

7. A multimedia teaching device according to claim 4, characterized in that: The electrostatic adsorption pad (7) is detachably arranged in the shell (5).

8. A multimedia teaching device according to claim 2, characterized in that: A dust collection box is also included, and the dust collection box is located at the bottom of the shell (5).

9. A multimedia teaching device according to claim 2, characterized in that: The shell (5) is made of transparent material.

10. A multimedia teaching device according to claim 5, characterized in that: The elastic member is a compression spring (16).

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