Push-pull blackboard

Abstract

The utility model provides a push-pull type blackboard, which relates to the technical field of blackboards, and comprises a support frame and a push-pull mechanism arranged on the outer side of the end part of the support frame, the push-pull mechanism comprises a blackboard body, and the blackboard body is rotatably connected to the inner side of the top end of the support frame. The blackboard comprises a blackboard body, two auxiliary boards are slidably connected to the inner side of the end of the blackboard body, clamping strips are fixedly connected to the outer sides of the ends of the auxiliary boards, protrusions are arranged on the outer sides of the two ends of each clamping strip, and limiting clamping blocks are slidably connected to the inner side of the end of the blackboard body. In the same way, when the auxiliary plate is closed, the sliding sleeve is driven by the second handle to move, the first handle is pulled in a matched mode, operation is coherent and smooth, time and energy in the using process are saved, and after the auxiliary plate moves in place, the clamping strip and the auxiliary plate can be effectively limited through the interaction mechanism of the clamping strip and the limiting clamping block.

Description

Technical Field

[0001] This utility model relates to the field of blackboard technology, and in particular to a push-pull blackboard. Background Technology

[0002] A sliding blackboard is a new type of teaching blackboard equipment. It consists of multiple blackboard panels, some of which can be pushed and pulled left and right or up and down along a specific track. It usually includes a fixed main screen area and a movable secondary screen area. By pushing and pulling the secondary screen, different teaching content can be flexibly switched to display. Compared with traditional blackboards, its advantage is that it can expand the actual usable area of ​​the blackboard, making it easier for teachers to display more information in a limited space. For example, when explaining complex courses, important knowledge points written earlier can be retained on the blackboard by moving the panel, while new content is written on the newly exposed panel.

[0003] Traditional blackboard erasers, once slid to the sides of the blackboard, are not always securely fixed. During the teacher's writing process, the erasers can easily move due to vibrations, which not only distracts both teachers and students and disrupts the teaching flow, but also forces the teacher to frequently stop and adjust the eraser's position, severely interfering with the normal teaching order and making it difficult for the teaching process to proceed smoothly. At the same time, the low efficiency of erasing the blackboard means that each time chalk is erased, it takes more time. In a limited class time, this reduces the time available for the teacher to explain knowledge and interact with students, thus hindering the teaching progress. Utility Model Content

[0004] The purpose of this invention is to provide a push-pull blackboard that solves the problem of insecure fixation of the baffle after it slides to the sides of the blackboard in traditional devices. During the teacher's writing process, the baffle can easily move due to vibration and other reasons. This not only distracts the teacher and students and interrupts the teaching process, but also may cause the teacher to frequently stop and adjust the position of the baffle, seriously disrupting the normal teaching order and making it difficult for the teaching process to proceed smoothly. The low efficiency of erasing the blackboard means that it takes more time to erase the chalk each time. In the case of limited class time, this will reduce the time for the teacher to explain knowledge and interact with students, thus hindering the teaching progress.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a push-pull blackboard, including a support frame and a push-pull mechanism disposed on the outer side of the end of the support frame;

[0006] The push-pull mechanism includes a blackboard body, which is rotatably connected to the inner top of the support frame. Two sub-plates are slidably connected to the inner end of the blackboard body. A retaining strip is fixedly connected to the outer end of the sub-plate, and protrusions are provided on the outer ends of both ends of the retaining strip. A limiting block is slidably connected to the inner end of the blackboard body. An inclined structure is provided on one side of the limiting block. A spring is fixedly connected to one side of the limiting block. The outer end of the spring is fixedly connected to the inner end of the blackboard body. A display is installed on one side of the support frame, and an auxiliary mechanism is provided on the outer side of the sub-plates.

[0007] In a preferred embodiment, a plug is fixedly connected to one side of the limiting block, and the outer side of the spring is slidably connected to the inner side of the end of the blackboard body.

[0008] In a preferred embodiment, a buffer strip is fixedly connected to the outer side of one end of the card strip, and the buffer strip is made of rubber.

[0009] In a preferred embodiment, a first handle is fixedly connected to one side of the buffer strip.

[0010] In a preferred embodiment, the auxiliary mechanism includes a sliding sleeve that is slidably connected to the outer side of the sub-plate, and triangular protrusions are provided on the outer sides of both ends of the sliding sleeve.

[0011] In a preferred embodiment, a second handle is fixedly connected to one side of the sliding sleeve.

[0012] In a preferred embodiment, a cleaning strip is fixedly connected to the outer side of one end of the sliding sleeve. The cleaning strip is made of flexible material and is in contact with one side of the sub-plate.

[0013] In a preferred embodiment, a limiting block is fixedly connected to the inner side of the end of the blackboard body, and the limiting block is made of rubber.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In use, by pulling the first handle, the two sub-plates can be easily moved to the sides to achieve a quick display on the monitor. Similarly, when closing the sub-plates, the sliding sleeve is moved by the second handle, which, together with pulling the first handle, makes the operation smooth and seamless, saving time and effort during use. When the sub-plates are moved into place, the interaction mechanism between the locking strip and the limiting block can effectively limit the locking strip and the sub-plates. The vertical structure on one side of the limiting block abuts against the locking strip, ensuring that the secondary board does not wobble during use and guaranteeing the stability of the blackboard display. This is beneficial for normal operation in teaching and other scenarios. The rubber buffer strip effectively reduces the impact generated during movement, protecting the blackboard structure and extending its service life. Through the special design of the sliding sleeve end, with protrusions on both sides of the triangular protrusion, the sliding sleeve and locking strip can smoothly pass over the limiting block to close the secondary board. This ingenious structural design not only ensures the realization of functions but also demonstrates the innovation and rationality of the design. It allows for easy obscuring or displaying of the monitor by moving the secondary board, meeting the needs of using different areas of the blackboard in different scenarios and improving the practicality and flexibility of the blackboard.

[0016] 2. In use, this utility model allows the surface of the secondary board to be cleaned by sliding the second handle through the flexible cleaning strip on one side of the sliding sleeve. This quickly removes the chalk writing without the need for additional tools, greatly improving the efficiency of cleaning the blackboard and saving time. It is especially suitable for classrooms with a fast teaching pace, allowing the blackboard to be quickly prepared for the next round of writing. The rubber limiting block can further buffer the impact of the clip on the blackboard body, effectively reducing the wear and tear of the equipment caused by collisions. Attached Figure Description

[0017] Figure 1 A schematic diagram of the main structure of a push-pull blackboard provided by this utility model;

[0018] Figure 2 A schematic diagram of the structure of the blackboard body and the sub-board in a push-pull blackboard provided by this utility model;

[0019] Figure 3 A schematic diagram of the structure of a sliding sleeve and a retaining strip in a push-pull blackboard provided by this utility model;

[0020] Figure 4 This utility model provides a push-pull blackboard Figure 2 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Support frame;

[0023] 2. Push-pull mechanism; 21. Blackboard body; 22. Sub-board; 23. Limiting block; 24. Spring; 25. Insert rod; 26. Sliding sleeve; 27. Locking strip; 28. Buffer strip; 29. ​​First handle; 210. Second handle; 211. Cleaning strip; 212. Display; 213. Limiting block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a push-pull blackboard, including a support frame 1, and a push-pull mechanism 2 disposed on the outer side of the end of the support frame 1. The push-pull mechanism 2 includes a blackboard body 21, which is rotatably connected to the inner side of the top of the support frame 1. Two sub-plates 22 are slidably connected to the inner side of the end of the blackboard body 21. A retaining strip 27 is fixedly connected to the outer side of the end of the sub-plates 22. Protrusions are provided on the outer sides of both ends of the retaining strip 27. A limiting block 23 is slidably connected to the inner side of the end of the blackboard body 21. A limiting block 23 is provided on one side of the limiting block 23. The structure has an inclined shape. A spring 24 is fixedly connected to one side of the limiting block 23. The outer side of the end of the spring 24 is fixedly connected to the inner side of the end of the blackboard body 21. A display 212 is installed on one side of the support frame 1. An auxiliary mechanism is provided on the outer side of the sub-board 22. A plug rod 25 is fixedly connected to one side of the limiting block 23. The outer side of the spring 24 is slidably connected to the inner side of the end of the blackboard body 21. A buffer strip 28 is fixedly connected to the outer side of one end of the locking strip 27. The buffer strip 28 is made of rubber. A first handle 29 is fixedly connected to one side of the buffer strip 28.

[0026] When the user needs to use the monitor 212 on one side of the support frame 1, the user can pull the first handle 29 to move the two sub-plates 22 to both sides. At this time, the locking strip 27 at the end of the sub-plate 22 moves to the inclined structure position on the side of the limiting block 23. The inclined structure of the locking strip 27 contacts the inclined structure of the limiting block 23, and at the same time pushes the limiting block 23 to compress the spring 24, causing the insertion rod 25 to slide to the inside of the blackboard body 21. At this time, the locking strip 27 moves to the other side of the limiting block 23, the spring 24 releases its elastic potential energy, and the limiting block 23 resets. Then, the vertical structure on one side of the limiting block 23 can abut against one side of the locking strip 27 to limit the locking strip 27 and the sub-plate 22. The rubber buffer strip 28 can reduce the impact. When the user needs to close the sub-plate 22 to cover the monitor 212, the user can use the second handle 210 to move the sliding sleeve 26 to the outside of the sub-plate 22 until the sliding sleeve 26 moves to the limiting block 23. One side of the 3 contacts the side of the locking strip 27, and both sides of the triangular protrusion at the end of the sliding sleeve 26 are provided with protrusions. At this time, the first handle 29 can be pulled to move the locking strip 27 and the sliding sleeve 26 at the same time. Through the protrusion at the end of the sliding sleeve 26, the sliding sleeve 26 and the locking strip 27 can be moved past the limiting block 23 to the other side, so that the two sub-plates 22 can be closed. The two sides of the sub-plate 22 are provided with rectangular through slots, and the inner sides of both ends of the blackboard body 21 are provided with cylindrical protrusions to realize the sliding of the sub-plate 22. By pulling the first handle 29, the two sub-plates 22 can be easily moved to the sides to realize the rapid display of the display 212. Similarly, when closing the sub-plate 22, the second handle 210 is used to move the sliding sleeve 26. With the first handle 29 pulled, the operation is smooth and continuous, saving time and effort in the process of use. When the sub-plate 22 is moved into place, the interaction mechanism between the locking strip 27 and the limiting block 23 can effectively limit the locking strip 27 and the sub-plate 22. The vertical structure on one side of the limiting block 23 abuts against the locking strip 27, ensuring that the secondary board 22 will not shake during use, thus guaranteeing the stability of the blackboard display state and facilitating normal operation in teaching and other scenarios. The rubber buffer strip 28 effectively reduces the impact generated during movement, protecting the structure of the blackboard and extending its service life. Through the special design of the end of the sliding sleeve 26, with protrusions on both sides of the triangular protrusion, the sliding sleeve 26 and the locking strip 27 can smoothly pass over the limiting block 23, achieving the closure of the secondary board 22. This ingenious structural design not only ensures the realization of the function but also demonstrates the innovation and rationality of the design. It allows for convenient obscuring or displaying of the monitor 212 by moving the secondary board 22, meeting the needs of using different areas of the blackboard in different scenarios and improving the practicality and flexibility of the blackboard.

[0027] like Figure 1 - Figure 4As shown, the auxiliary mechanism includes a sliding sleeve 26, which is slidably connected to the outside of the sub-plate 22. Triangular protrusions are provided on the outer sides of both ends of the sliding sleeve 26. A second handle 210 is fixedly connected to one side of the sliding sleeve 26. A cleaning strip 211 is fixedly connected to the outer side of one end of the sliding sleeve 26. The cleaning strip 211 is made of flexible material and contacts one side of the sub-plate 22. A limiting block 213 is fixedly connected to the inner side of the end of the blackboard body 21. The limiting block 213 is made of rubber.

[0028] Users can slide the sliding sleeve 26 using the second handle 210, and then use the flexible cleaning strip 211 on one side of the sliding sleeve 26 to clean the surface of the secondary board 22, which can remove written chalk content. At the same time, the rubber limiting block 213 can further reduce the impact of the clip 27 on the blackboard body 21, increasing its service life. By sliding the sliding sleeve 26 using the second handle 210, the surface of the secondary board 22 can be cleaned using the flexible cleaning strip 211 on one side of the sliding sleeve 26, quickly removing written chalk content without the need for additional tools, greatly improving the efficiency of cleaning the blackboard and saving time. It is especially suitable for classrooms with a fast teaching pace, allowing the blackboard to be quickly prepared for the next round of writing. The rubber limiting block 213 can further buffer the impact of the clip 27 on the blackboard body 21, effectively reducing the wear and tear of the equipment caused by collision.

[0029] Working principle: When the user needs to use the monitor 212 on one side of the support frame 1, the user can pull the first handle 29 to move the two sub-plates 22 to both sides. At this time, the locking strip 27 at the end of the sub-plate 22 moves to the inclined structure position on one side of the limiting block 23. The inclined structure of the locking strip 27 contacts the inclined structure of the limiting block 23, and at the same time pushes the limiting block 23 to compress the spring 24, which drives the insertion rod 25 to slide to the inside of the blackboard body 21. At this time, the locking strip 27 moves to the other side of the limiting block 23, the spring 24 releases its elastic potential energy, and the limiting block 23 resets. Then, the vertical structure on one side of the limiting block 23 can abut against one side of the locking strip 27 to limit the locking strip 27 and the sub-plate 22. The rubber buffer strip 28 can reduce the impact. When the user needs to close the sub-plate 22 to cover the monitor 212, the user can use the second handle 210 to move the sliding sleeve 26 to the outside of the sub-plate 22 until the sliding sleeve 26 moves to the limit. One side of the locking block 23 contacts one side of the locking strip 27, and both sides of the triangular protrusion at the end of the sliding sleeve 26 are provided with protrusions. At this time, the first handle 29 can be pulled to move the locking strip 27 and the sliding sleeve 26 simultaneously. The protrusion at the end of the sliding sleeve 26 can move the sliding sleeve 26 and the locking strip 27 past the limiting locking block 23 to the other side, thereby closing the two sub-plates 22. The two sides of the sub-plates 22 are provided with rectangular through slots, and the inner sides of both ends of the blackboard body 21 are provided with cylindrical protrusions to realize the sliding of the sub-plates 22. By pulling the first handle 29, the two sub-plates 22 can be easily moved to the sides to realize the rapid display of the monitor 212. Similarly, when closing the sub-plates 22, the second handle 210 is used to move the sliding sleeve 26. Combined with pulling the first handle 29, the operation is smooth and continuous, saving time and effort in the process of use. When the sub-plates 22 are moved into place, the interaction mechanism between the locking strip 27 and the limiting locking block 23 can effectively limit the locking strip 27 and the sub-plates 22.The vertical structure on one side of the limiting block 23 abuts against the locking strip 27, ensuring that the secondary board 22 will not shake during use, thus guaranteeing the stability of the blackboard display and facilitating normal operation in teaching and other scenarios. The rubber buffer strip 28 effectively reduces the impact generated during movement, protecting the blackboard structure and extending its service life. The special design at the end of the sliding sleeve 26—with protrusions on both sides of the triangular protrusion—allows the sliding sleeve 26 and locking strip 27 to smoothly pass over the limiting block 23, closing the secondary board 22. This ingenious structural design ensures functional implementation while showcasing innovation and rationality. It allows for convenient obscuring or displaying of the monitor 212 by moving the secondary board 22, meeting the needs of different areas of the blackboard in various scenarios, enhancing the practicality and flexibility of the blackboard. The sliding sleeve 26 can be slid by the second handle 210, and the surface of the secondary board 22 can be cleaned by the flexible cleaning strip 211 on one side of the sliding sleeve 26. This can remove the chalk writing. At the same time, the rubber limiting block 213 can further reduce the impact of the clip 27 on the blackboard body 21, increasing its service life. By sliding the sliding sleeve 26 by the second handle 210, the surface of the secondary board 22 can be cleaned by the flexible cleaning strip 211 on one side of the sliding sleeve 26, quickly removing the chalk writing. No additional tools are needed, which greatly improves the efficiency of cleaning the blackboard and saves time. It is especially suitable for classrooms with a fast teaching pace, allowing the blackboard to be quickly prepared for the next round of writing. The rubber limiting block 213 can further buffer the impact of the clip 27 on the blackboard body 21, effectively reducing the wear and tear of the equipment caused by collision.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A sliding blackboard comprising a support frame (1), characterized in that: It also includes a push-pull mechanism (2) arranged outside the end of the support frame (1); The push-pull mechanism (2) comprises a blackboard body (21) which is rotatably connected to the inner side of the top end of the support frame (1), the inner side of the end of the blackboard body (21) is slidably connected with two sub-boards (22), the outer side of the end of the sub-board (22) is fixedly connected with a clamping strip (27), the outer side of both ends of the clamping strip (27) is provided with a protrusion, the inner side of the end of the blackboard body (21) is slidably connected with a limiting clamping block (23), one side of the limiting clamping block (23) is provided with an inclined structure, one side of the limiting clamping block (23) is fixedly connected with a spring (24), the outer side of the end of the spring (24) is fixedly connected with the inner side of the end of the blackboard body (21), one side of the support frame (1) is provided with a display (212), the outer side of the sub-board (22) is provided with an auxiliary mechanism.

2. A sliding blackboard according to claim 1, characterized in that: One side of the limiting clamping block (23) is fixedly connected with a plug rod (25), the outer side of the spring (24) is slidably connected with the inner side of the end of the blackboard body (21).

3. A sliding blackboard according to claim 1, characterized in that: One end of the outer side of the clamping strip (27) is fixedly connected with a buffer strip (28), the material of the buffer strip (28) is rubber.

4. A sliding blackboard according to claim 3, characterized in that: One side of the buffer strip (28) is fixedly connected with a first handle (29).

5. A sliding blackboard according to claim 1, characterized in that: The auxiliary mechanism comprises a sliding sleeve (26), the sliding sleeve (26) is slidably connected to the outer side of the sub-board (22), the outer side of both ends of the sliding sleeve (26) is provided with a triangular protrusion.

6. A sliding blackboard according to claim 5, characterized in that: One side of the sliding sleeve (26) is fixedly connected with a second handle (210).

7. A sliding blackboard according to claim 5, wherein: One end of the outer side of the sliding sleeve (26) is fixedly connected with a cleaning strip (211), the cleaning strip (211) is of flexible material, the cleaning strip (211) is in contact with one side of the sub-board (22).

8. A sliding blackboard according to claim 5, wherein: The inner side of the end of the blackboard body (21) is fixedly connected with a limiting block (213), the material of the limiting block (213) is rubber.

Images