Push-pull blackboard and intelligent blackboard device

Abstract

The application is suitable for the technical field of writing tools, and provides a push-pull blackboard and an intelligent blackboard device. The push-pull blackboard comprises a fixed blackboard and a movable blackboard. The movable blackboard can slide relative to the fixed blackboard along a first direction and has a writing position. One of the fixed blackboard and the movable blackboard is provided with a limiting convex part, and the other is provided with a limiting concave part. When the movable blackboard is in the writing position, the limiting convex part is inserted into the limiting concave part, and the limiting concave part is used for blocking the limiting convex part from separating from the limiting concave part in the opposite direction of the first direction. The mechanical limiting structure such as the limiting convex part and the limiting concave part is used in cooperation to lock the movable blackboard at the writing position, which can effectively reduce the risk of sliding of the movable blackboard due to touching or writing force, ensure continuous handwriting and accurate position, and reduce repeated writing or correction due to sliding.

Description

Technical Field

[0001] This application belongs to the field of writing instrument technology, and more specifically, relates to a push-pull blackboard and intelligent blackboard device. Background Technology

[0002] In teaching, meetings, and other settings, sliding blackboards are widely used as a common writing tool. Related technologies include fixed blackboards and movable blackboards that can move relative to the fixed blackboard. The movable blackboard is located to one side of the fixed blackboard and can slide left and right along the length of the fixed blackboard.

[0003] However, in actual writing, the movable blackboard is prone to sliding, causing the writing position to shift and affecting the continuity and accuracy of writing. Utility Model Content

[0004] The purpose of this application is to provide a push-pull blackboard and a smart blackboard device, which aims to solve the technical problem that movable blackboards in related technologies are prone to sliding during writing.

[0005] To achieve the above objectives, according to one aspect of this application, a push-pull blackboard is provided, including a fixed blackboard and a movable blackboard, the movable blackboard being able to slide relative to the fixed blackboard along a first direction and having a writing position; one of the fixed blackboard and the movable blackboard is provided with a limiting protrusion, and the other is provided with a limiting recess; when the movable blackboard is in the writing position, the limiting protrusion is inserted into the limiting recess, and the limiting recess is used to prevent the limiting protrusion from disengaging from the limiting recess in the opposite direction of the first direction.

[0006] Optionally, the limiting recess includes a limiting body and a limiting structure. The limiting body is provided with a limiting groove, and the limiting structure is provided on the groove wall of the limiting groove and can extend and retract along a second direction, which intersects with the first direction. When the movable blackboard is in the writing position, the limiting protrusion is inserted into the limiting groove, and the limiting structure prevents the limiting protrusion from disengaging from the limiting groove in the opposite direction of the first direction by contacting the limiting protrusion.

[0007] Optionally, the limiting structure is an elastic plunger, the groove wall of the limiting groove is provided with an installation groove, the elastic plunger is fixedly installed in the installation groove, and the head part of the elastic plunger can extend and retract in the second direction; a limiting recess is provided on the surface of the limiting protrusion; when the movable blackboard is in the writing position, the head part of the elastic plunger is inserted into the limiting recess to prevent the limiting protrusion from disengaging from the limiting groove in the opposite direction of the first direction.

[0008] Optionally, the push-pull blackboard further includes a first mounting component and a second mounting component. The first mounting component includes a first mounting body and a limiting recess. The first mounting body is disposed on the fixed blackboard, and the limiting recess is disposed on the first mounting body. The second mounting component includes a second mounting body and a limiting protrusion. The second mounting body is disposed on the movable blackboard, and the limiting protrusion is disposed on the second mounting body.

[0009] Optionally, one of the first mounting body and the second mounting body is provided with a buffer; when the movable blackboard is in the writing position, the buffer is in a compressed state.

[0010] Optionally, the buffer body is disposed on the first mounting body and is located on the same side of the first mounting body as the limiting recess; the second mounting component also includes a mating body disposed on the second mounting body; when the movable blackboard is in the writing position, the buffer body contacts the mating body.

[0011] Optionally, the push-pull blackboard also includes a first slide rail, which is disposed on the fixed blackboard, and a first mounting body is disposed on the first slide rail; a second mounting body is slidably disposed within the first slide rail along a first direction, and the second mounting body also includes a damping body, which is disposed on the second mounting body and contacts the first slide rail to apply resistance to the movable blackboard.

[0012] Optionally, the first slide rail has a first inner wall surface and a second inner wall surface arranged opposite to each other along a second direction, the second direction being perpendicular to the first direction; the second mounting body is provided with a plurality of pulleys spaced apart along the first direction, at least one of the pulleys contacting the first inner wall surface, and at least one pulley contacting the second inner wall surface; and / or, the push-pull blackboard further includes a second slide rail, the second slide rail being disposed on the fixed blackboard and spaced apart from the first slide rail along a third direction, the third direction being perpendicular to the first direction; the movable blackboard is provided with a sliding member, the sliding member being slidably disposed within the second slide rail along the first direction.

[0013] Optionally, the fixed blackboard is provided with two first mounting parts, which are arranged facing each other along a first direction; the movable blackboard is provided with two second mounting parts, which are arranged opposite each other along the first direction and located between the two first mounting parts.

[0014] According to another aspect of this application, an intelligent blackboard device is provided, including a display screen and the aforementioned push-pull blackboard. The push-pull blackboard includes two fixed blackboards and two movable blackboards. The fixed blackboards are located on one side of the display screen in a first direction and are disposed on the display screen. The two movable blackboards can move towards or away from each other along the first direction and can cover the display screen.

[0015] The beneficial effects of the push-pull blackboard provided in this application are as follows: the above-mentioned structural design locks the movable blackboard in the writing position through the mechanical limiting structure such as the limiting protrusion and limiting recess used in combination, which can effectively reduce the risk of the movable blackboard sliding due to touching or writing force, ensure continuous writing and accurate position, and reduce the situation of repeated writing or correction due to sliding.

[0016] Meanwhile, the limiting protrusions and limiting recesses used in conjunction only take effect when the movable blackboard is in the writing position, without affecting the normal sliding switching of the movable blackboard, so that the movable blackboard has both locking stability and sliding flexibility.

[0017] In addition, the mechanical combination of the limiting protrusion and the limiting recess eliminates the need for complex electronic control components, resulting in low cost, easy maintenance, and suitability for high-frequency use scenarios such as schools and conference rooms. Furthermore, it is wear-resistant, has a long lifespan, and can stably perform its limiting function over a long period of time. Attached Figure Description

[0018] To more clearly illustrate the technical features of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the intelligent blackboard device provided in the embodiments of this application;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0024] Figure 5 This is a schematic diagram of the structure of the first mounting component provided in an embodiment of this application;

[0025] Figure 6A schematic diagram of the structure of the first mounting component after concealing the limiting structure and the buffer body in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the second mounting component provided in the embodiments of this application;

[0027] Figure 8 A bottom view of the second mounting component provided in the embodiments of this application;

[0028] Figure 9 An exploded view of the intelligent blackboard device provided in the embodiments of this application;

[0029] Figure 10 A cross-sectional schematic diagram illustrating the cooperation between the second mounting component and the first slide rail, provided for an embodiment of this application;

[0030] Figure 11 for Figure 10 Enlarged view of point E in the middle;

[0031] Figure 12 for Figure 9 Enlarged view of point D in the middle;

[0032] Figure 13 A cross-sectional schematic diagram showing the cooperation of the display blackboard, the second slide rail, and the sliding member provided in the embodiments of this application;

[0033] The details of the reference numerals used in the above figures are as follows:

[0034] 100. Fixed blackboard; 200. Movable blackboard; 300. First mounting component; 310. First mounting body; 311. Receiving groove; 312. Guide hole; 320. Limiting recess; 321. Limiting body; 3211. Limiting groove; 3212. Mounting slot; 322. Limiting structure; 3221. Head component; 330. Buffer body;

[0035] 400. Second mounting component; 410. Second mounting body; 420. Limiting protrusion; 421. Limiting recess; 430. Mating body; 440. Damping body; 450. Pulley;

[0036] 500, First slide rail; 510, First connecting structure; 520, First inner wall surface; 530, Second inner wall surface; 600, Second slide rail; 700, Sliding component; 710, Pulley block; 720, Second connecting structure; 800, Display screen. Detailed Implementation

[0037] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort should all fall within the scope of protection of this application.

[0038] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] In the description of this application, it should be understood that the numbering itself, such as "first", "second", etc., is only used to distinguish the described objects and has no sequential or technical meaning, and should not be construed as specifying or implying the importance of the described objects.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In the description of this application, the term "multiple" refers to two or more. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0042] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] As described in the background section, sliding blackboards are widely used as a common writing tool in teaching, meetings, and other settings. Related technologies include fixed blackboards and movable blackboards that can move relative to the fixed blackboard. The movable blackboard is located to one side of the fixed blackboard and can slide left and right along the length of the fixed blackboard. However, in actual writing, the movable blackboard is prone to sliding, causing the writing position to shift and affecting the continuity and accuracy of writing.

[0044] Reference Figures 1 to 8 To address the aforementioned problems, according to one aspect of this application, an embodiment of this application provides a push-pull blackboard, which includes a fixed blackboard 100 and a movable blackboard 200. The movable blackboard 200 is slidable relative to the fixed blackboard 100 along a first direction and has a writing position. One of the fixed blackboard 100 and the movable blackboard 200 is provided with a limiting protrusion 420, and the other is provided with a limiting recess 320. When the movable blackboard 200 is in the writing position, the limiting protrusion 420 is inserted into the limiting recess 320, and the limiting recess 320 is used to prevent the limiting protrusion 420 from disengaging from the limiting recess 320 in the opposite direction of the first direction.

[0045] In this embodiment, the length direction of the movable blackboard 200 is parallel to the length direction of the fixed blackboard 100, the height direction of the movable blackboard 200 is parallel to the height direction of the fixed blackboard 100, and the thickness direction of the movable blackboard 200 is parallel to the thickness direction of the fixed blackboard 100. The first direction is parallel to the length direction of the fixed blackboard 100; it can be understood that the first direction may also be parallel to the height direction or other directions of the fixed blackboard 100. The limiting recess 320 is a solid structure, such as a limiting block or a limiting seat, and a limiting groove 3211 is provided on the limiting recess 320. The limiting protrusion 420 may be a limiting protrusion made of silicone or rubber. In this case, the limiting protrusion 420 can be interference-fitted into the limiting groove 3211 of the limiting recess 320, and the interference fit between the two generates a compressive force, causing the limiting recess 320 to restrict the limiting protrusion 420 from disengaging. It is understandable that a first magnetic attraction structure can also be installed inside the limiting protrusion 420, and a second magnetic attraction structure that attracts the first magnetic attraction structure can also be installed inside the limiting groove 3211 of the limiting recess 320 (such as the first magnetic attraction structure being a magnet, the second magnetic attraction structure being a magnetically attractable metal, or both being opposite pole magnets). The limiting recess 320 restricts the limiting protrusion 420 from detaching through the magnetic attraction force generated by the two magnetic attraction structures.

[0046] The above structural design uses mechanical limiting structures 322, such as limiting protrusions 420 and limiting recesses 320, to lock the movable blackboard 200 in the writing position, which can effectively reduce the risk of the movable blackboard 200 sliding due to touching or writing force, ensure continuous writing and accurate position, and reduce repeated writing or corrections caused by sliding.

[0047] Meanwhile, the limiting protrusion 420 and limiting recess 320 used in conjunction only take effect when the movable blackboard 200 is in the writing position, without affecting the normal sliding switching of the movable blackboard 200, so that the movable blackboard 200 has both locking stability and sliding flexibility.

[0048] In addition, the mechanical combination of the limiting protrusion 420 and the limiting recess 320 eliminates the need for complex electrical control components, resulting in low cost, easy maintenance, and suitability for high-frequency use scenarios such as schools and conference rooms. Furthermore, it is wear-resistant, has a long lifespan, and can stably perform its limiting function over a long period of time.

[0049] Reference Figures 2 to 8 In one embodiment, the limiting recess 320 includes a limiting body 321 and a limiting structure 322. The limiting body 321 is provided with a limiting groove 3211, and the limiting structure 322 is disposed on the groove wall of the limiting groove 3211 and can extend and retract along a second direction, which intersects with the first direction. When the movable blackboard 200 is in the writing position, the limiting protrusion 420 is inserted into the limiting groove 3211, and the limiting structure 322 prevents the limiting protrusion 420 from disengaging from the limiting groove 3211 in the opposite direction of the first direction by contacting the limiting protrusion 420.

[0050] In this embodiment, the second direction is perpendicular to the first direction and parallel to the thickness direction of the fixed blackboard 100; it is understood that the angle between the second direction and the first direction can also be an acute angle. The limiting structure 322 can be a limiting protrusion made of silicone or rubber, or it can be an elastic block driven by a spring; when the movable blackboard 200 is in the writing position, the limiting structure 322 can press against the limiting protrusion 420 through its own elasticity or the elastic force of the spring, thereby preventing the limiting protrusion 420 from disengaging from the limiting groove 3211.

[0051] On the one hand, when the limiting protrusion 420 is inserted into the limiting groove 3211, the limiting structure 322 can adjust its own position through its own telescopic characteristics, thereby forming a stable mechanical block and improving the reliability of the limiting. Compared with a fixed-form limiting structure 322 (such as a rigid protrusion), it can more accurately counteract external forces in the opposite direction of the first direction (such as the pushing force during writing), effectively reducing the risk of the limiting protrusion 420 disengaging from the limiting groove 3211 and ensuring the locking stability of the movable blackboard 200 in the writing position.

[0052] On the other hand, when the movable blackboard 200 needs to switch from the writing position to other positions along the first direction, the limiting structure 322 can retract along the second direction, thereby removing the obstruction to the limiting protrusion 420. Compared with the fixed rigid limiting structure 322, the telescopic design can reduce the friction and collision when the limiting protrusion 420 enters and exits the limiting groove 3211, making the switching between the locked and unlocked states of the movable blackboard 200 smoother, reducing the feeling of jamming during operation, and improving the convenience of pushing and pulling the movable blackboard 200.

[0053] Reference Figures 2 to 8 In one embodiment, the limiting structure 322 is an elastic plunger, and the groove wall of the limiting groove 3211 is provided with an installation groove 3212. The elastic plunger is fixedly installed in the installation groove 3212, and the head component 3221 of the elastic plunger can extend and retract in the second direction. A limiting recess 421 is provided on the surface of the limiting protrusion 420. When the movable blackboard 200 is in the writing position, the head component 3221 of the elastic plunger is inserted into the limiting recess 421 to prevent the limiting protrusion 420 from disengaging from the limiting groove 3211 in the opposite direction of the first direction.

[0054] In this embodiment, the extending direction of the mounting groove 3212 is parallel to the second direction. The elastic plunger is fixedly installed in the mounting groove 3212 along the second direction by riveting. It is understood that the elastic plunger can also be fixedly installed in the mounting groove 3212 by interference fitting, welding, snap-fitting, or adhesive bonding. The head component 3221 of the elastic plunger is hemispherical. It is understood that the head component 3221 of the elastic plunger can also be cylindrical, conical, or flat-ended. The limiting recess 421 is a limiting pit or limiting edge. The limiting recess 421 is provided on the surface of the limiting protrusion 420 corresponding to the mounting groove 3212, that is, on the circumferential surface of the limiting protrusion 420. The circumferential surface of the limiting protrusion 420 is adjacent to the end face of the limiting protrusion 420 corresponding to the bottom of the limiting groove 3211.

[0055] On the one hand, the head component 3221 of the elastic plunger extends and retracts along the second direction. When the movable blackboard 200 is in the writing position, the head component 3221 of the elastic plunger is embedded in the limiting recess 421 of the limiting protrusion 420, forming a double positioning with a concave-convex fit (the limiting protrusion 420 is inserted into the limiting groove 3211 and the head component 3221 of the elastic plunger is embedded in the limiting recess 421). This double fit not only prevents the limiting protrusion 420 from disengaging in the opposite direction of the first direction, but also, through the contact between the limiting recess 421 and the head component 3221 of the elastic plunger, counteracts other external forces experienced by the movable blackboard 200 during writing, further reducing the unexpected displacement of the movable blackboard 200 and ensuring the stability of the writing position.

[0056] On the other hand, when it is necessary to switch the position of the movable blackboard 200, simply apply an appropriate pushing force in the first direction. The side of the limiting protrusion 420 will press against the head component 3221 of the elastic plunger, causing it to retract in the second direction and exit the limiting recess 421, thereby releasing the restriction on the movable blackboard 200. Smooth sliding of the movable blackboard 200 can be achieved without additional operation (such as manual unlocking). Compared to the rigid limiting structure 322, the extension and retraction of the head component 3221 of the elastic plunger has a force-triggered characteristic, ensuring reliable locking during writing and reducing the risk of jamming or obstruction during sliding switching, thus improving the smoothness of user operation.

[0057] On the other hand, the head component 3221 of the elastic plunger extends and retracts through elastic elements such as springs. When it contacts or engages / disengages from the limiting protrusion 420 or the limiting recess 421, it can absorb impact force through elastic deformation, reducing rigid collisions between the two. This elastic contact can reduce wear on the limiting protrusion 420, the limiting recess 3211, and the elastic plunger itself, extending the service life of the overall structure and reducing maintenance costs.

[0058] Reference Figures 2 to 8 In one embodiment, there are two limiting structures 322, which are respectively disposed on two inner wall surfaces that are disposed opposite to each other in the second direction within the limiting groove 3211; and two limiting recesses 421 that are disposed opposite to each other in the second direction are provided on the limiting protrusion 420.

[0059] In this embodiment, the two limiting structures 322 are mirror-symmetrical about the axis of the limiting groove 3211, and the two limiting recesses 421 are mirror-symmetrical about the axis of the limiting protrusion 420. It is understood that the number of limiting structures 322 can also be other numbers, with multiple limiting structures 322 spaced circumferentially along the groove wall of the limiting groove 3211; the number of limiting recesses 421 is the same as the number of limiting structures 322, and multiple limiting recesses 421 are provided in a one-to-one correspondence with multiple limiting grooves 3211.

[0060] The two limiting structures 322 and limiting recess 421 used in conjunction not only further enhance the reliability of the limiting, thereby further improving the overall stability of the movable blackboard 200 in the writing position; but also form a redundant structure, effectively improving the fault tolerance of the limiting system and reducing the risk of sudden sliding of the movable blackboard 200.

[0061] Reference Figures 2 to 8 In one embodiment, the limiting recess 421 is an arc-shaped recess. In this embodiment, the limiting recess 421 is an arc-shaped recess that is high at both ends and low in the middle; it can be understood that the limiting recess 421 may also be an arc-shaped recess that is high at one end and low at the other end, or an arc-shaped recess that is wavy in shape.

[0062] The curved surface of the concave area naturally conforms to the curved surface of the head component 3221 of the elastic plunger, and the contact between the two is a surface contact rather than a point contact with rigid edges. When the movable blackboard 200 slides to the writing position, the head component 3221 of the elastic plunger can smoothly embed itself along the curved surface of the concave area, thereby reducing the feeling of jamming; when it is necessary to unlock the slide, the movement of the limiting protrusion 420 will cause the head component 3221 of the elastic plunger to gradually disengage from the limiting recess 421 along the curved surface, reducing the operating resistance and improving the smoothness of position switching.

[0063] Reference Figures 1 to 8 In one embodiment, the push-pull blackboard further includes a first mounting member 300 and a second mounting member 400. The first mounting member 300 includes a first mounting body 310 and a limiting recess 320. The first mounting body 310 is disposed on the fixed blackboard 100, and the limiting recess 320 is disposed on the first mounting body 310. The second mounting member 400 includes a second mounting body 410 and a limiting protrusion 420. The second mounting body 410 is disposed on the movable blackboard 200, and the limiting protrusion 420 is disposed on the second mounting body 410.

[0064] In this embodiment, the first mounting body 310 is a mounting bracket or mounting base. The first mounting body 310 can be directly mounted to the fixed blackboard 100, or it can be mounted to the fixed blackboard 100 via an intermediate component. The limiting recess 320 is a solid structure and is mounted on the first mounting body 310. The second mounting body 410 is a mounting bracket or L-shaped mounting plate. The second mounting body 410 is mounted to the movable blackboard 200, and the limiting protrusion 420 is mounted on the second mounting body 410. Furthermore, it is understood that the limiting recess 320 can also be provided on the second mounting body 410, and the limiting protrusion 420 can be provided on the first mounting body 310.

[0065] The fixed blackboard 100 and the movable blackboard 200 are typically standardized structures. Directly machining the limiting protrusion 420 or the limiting recess 320 onto them could potentially compromise the structural strength of the fixed blackboard 100 and the movable blackboard 200. However, the first mounting component 300 can independently support the limiting recess 320, and the second mounting component 400 can independently support the limiting protrusion 420. This structural design avoids damage to the fixed blackboard 100 and the movable blackboard 200 while also reducing overall machining difficulty and cost.

[0066] Reference Figures 1 to 8 In one embodiment, one of the first mounting body 310 and the second mounting body 410 is provided with a buffer 330; when the movable blackboard 200 is in the writing position, the buffer 330 is in a compressed state.

[0067] In this embodiment, the buffer 330 is an elastic element, which may be an elastic pad, a compression spring, a cushioning foam, a cushioning silicone, or an elastic stop. The buffer 330 is disposed on the first mounting body 310. It is understood that the buffer 330 may also be disposed on the second mounting body 410.

[0068] The buffer 330 is designed to buffer the impact force generated by the engagement of the limiting protrusion 420 and the limiting recess 320 during the sliding of the movable blackboard 200 to the writing position, thereby reducing wear caused by their collision and reducing the noise generated by the collision, thus extending the service life of both.

[0069] Meanwhile, as the movable blackboard 200 slides to the writing position, the buffer 330 undergoes elastic deformation before the limiting protrusion 420 is inserted into the limiting groove 3211, thereby slowing down the sliding speed of the movable blackboard 200. This makes the process of the limiting protrusion 420 inserting into the limiting groove 3211 smoother, rather than a sudden rigid collision, thus reducing the risk of fingers being pinched by the first mounting piece 300 and the second mounting piece 400 used in conjunction.

[0070] Reference Figures 1 to 8 In one embodiment, the buffer 330 is disposed on the first mounting body 310 and is located on the same side of the first mounting body 310 as the limiting recess 320; the second mounting member 400 also includes a mating body 430, which is disposed on the second mounting body 410; when the movable blackboard 200 is in the writing position, the buffer 330 contacts the mating body 430.

[0071] In this embodiment, the buffer body 330 is mounted on the surface of the first mounting body 310 where the limiting recess 320 is provided. It can be understood that the buffer body 330 can also be mounted on the surface of the first mounting body 310 opposite to the surface where the limiting recess 320 is provided. In this case, a blocking member is provided on the side of the buffer body 330 away from the limiting recess 320 to block the movement of the buffer body 330. This blocking member can be part of the first mounting member 300 or part of the fixed blackboard 100, so that when the movable blackboard 200 is in the writing position, the buffer body 330 is in a squeezed state.

[0072] The mating body 430 can be an elastic pad, compression spring, cushioning foam, cushioning silicone, or elastic stop, thereby reducing wear caused by collision and noise generated when in contact with the buffer body 330. The mating body 430 can also be a rigid block (such as a metal block) that is not easily deformed, providing stable compression support for the buffer body 330 and ensuring that the buffer body 330 is smoothly in a compressed state.

[0073] The buffer body 330 and the limiting recess 320 are both located on the same side of the first mounting body 310. This structural design helps to achieve a compact design for the first mounting component 300, thereby reducing its overall size. Simultaneously, by using the mating body 430 in conjunction with the buffer body 330, only the shape and material of the mating body 430 need to be optimized to meet usage requirements, without needing to optimize the overall shape and material of the second mounting component 400, thus reducing the manufacturing cost and difficulty of the second mounting component 400.

[0074] Reference Figure 1 and Figure 2 In one embodiment, the first mounting body 310 is detachably connected to the fixed blackboard 100.

[0075] In this embodiment, the first mounting body 310 can be detachably connected to the fixed blackboard 100 directly via connecting screws, or it can be detachably connected to the intermediate component via connecting screws, with the intermediate component being fixedly connected to the fixed blackboard 100. It is understood that the first mounting body 310 can also be detachably connected to the fixed blackboard 100 via a second connecting structure 720, such as a snap-fit ​​structure, a plug-in structure, or a magnetic structure.

[0076] The detachable connection design not only facilitates the installation of the first mounting body 310 onto the fixed blackboard 100, but also allows for the separate disassembly and replacement of the first mounting body 310, which is subject to high-frequency stress, reducing maintenance costs and complexity. Furthermore, the detachable connection design allows for flexible selection of the appropriate first mounting body 310 based on the actual parameters of the fixed blackboard 100, without being limited by the factory configuration of the fixed blackboard 100, thus improving usability.

[0077] Reference Figure 2 , Figure 5 as well as Figure 6 In one embodiment, the limiting recess 320 is detachably connected to the first mounting body 310.

[0078] In this embodiment, the limiting recess 320 is detachably connected to the first mounting body 310 via a connecting screw. It is understood that the limiting recess 320 can also be detachably connected to the first mounting body 310 via a second connecting structure 720, such as a snap-fit ​​structure, a plug-in structure, or a magnetic structure.

[0079] The detachable connection design not only facilitates the installation of the limiting recess 320 with the limiting groove 3211 onto the first mounting body 310, but also facilitates the individual disassembly and replacement of the limiting recess 320 subjected to high-frequency forces, reducing maintenance costs and difficulty. Furthermore, the detachable connection design allows for flexible selection of the appropriate limiting recess 320 based on the actual parameters of the fixed blackboard 100, eliminating limitations imposed by the factory configuration of the fixed blackboard 100 and improving usability.

[0080] Reference Figure 2 , Figure 5 as well as Figure 6 In one embodiment, the buffer body 330 is a buffer spring, and the surface of the first mounting body 310 is provided with a receiving groove 311, and part of the structure of the buffer body 330 is embedded in the receiving groove 311.

[0081] In this embodiment, the receiving groove 311 is provided on the surface of the first mounting body 310 where the limiting recess 320 is provided. The buffer spring is fixedly embedded in the receiving groove 311 by soldering. It is understood that the buffer spring can also be fixedly embedded in the receiving groove 311 by bonding or other connection methods.

[0082] The recessed groove 311 not only limits the lateral movement of the buffer body 330, improving its stability on the first mounting body 310, but also allows the buffering force of the buffer body 330 to act more precisely on the mating body 430, thereby enhancing the buffering effect when the movable backplate is in place. Simultaneously, it secures the buffer body 330 through structural constraints, enhancing its structural robustness. Furthermore, the recessed groove 311 provides a pre-set mounting position for the buffer body 330, simplifying the installation and replacement process.

[0083] Reference Figure 2 , Figure 5 as well as Figure 6 In one embodiment, the bottom of the groove 311 is provided with a guide hole 312, and one end of the buffer body 330 passes through the guide hole 312.

[0084] In this embodiment, the guide hole 312 is a through hole that penetrates the first mounting body 310 along the first direction. One end of the buffer body 330 near the bottom of the receiving groove 311 is inserted into the guide hole 312 and extends out of the guide hole 312.

[0085] The guide hole 312 not only serves as a guide and positioner, facilitating the precise and smooth installation of the buffer body 330 onto the first mounting body 310, but also limits the buffer body 330, improving its stability on the first mounting body 310. Furthermore, the guide hole 312 also constrains the buffer body 330, ensuring that it undergoes elastic deformation only along the first direction.

[0086] Reference Figure 1 as well as Figure 3 In one embodiment, the second mounting body 410 is detachably connected to the movable blackboard 200.

[0087] In this embodiment, the second mounting body 410 is detachably connected to the movable blackboard 200 via connecting screws. It is understood that the second mounting body 410 can also be detachably connected to the movable blackboard 200 via a second connecting structure 720, such as a snap-fit ​​structure, a plug-in structure, or a magnetic structure.

[0088] The detachable connection design not only facilitates the installation of the second mounting body 410 with the limiting protrusion 420 onto the movable blackboard 200, but also allows for the separate disassembly and replacement of the second mounting body 410, which is subjected to high-frequency forces, reducing maintenance costs and complexity. Furthermore, the detachable connection design allows for flexible selection of the appropriate second mounting body 410 based on the actual parameters of the movable blackboard 200, without being limited by the factory configuration of the fixed blackboard 100, thus improving usability.

[0089] Reference Figure 3 , Figure 7 as well as Figure 8 In one embodiment, the mating body 430 is detachably connected to the second mounting body 410.

[0090] In this embodiment, the mating body 430 is detachably connected to the second mounting body 410 via connecting screws. It is understood that the mating body 430 can also be detachably connected to the second mounting body 410 via a second connecting structure 720, such as a snap-fit ​​structure, plug-in structure, or magnetic structure.

[0091] The detachable connection design not only facilitates the installation of the mating body 430, which is used in conjunction with the buffer body 330, onto the second mounting body 410, but also allows for the individual disassembly and replacement of the mating body 430 subjected to high-frequency forces, reducing maintenance costs and complexity. Furthermore, the detachable connection design allows for flexible selection of the appropriate mating body 430 based on the actual parameters of the movable blackboard 200, without being limited by the factory configuration of the fixed blackboard 100, thus improving usability.

[0092] Reference Figure 3 , Figure 7 as well as Figure 8 In one embodiment, the limiting protrusion 420 is detachably mounted on the mating body 430.

[0093] In this embodiment, the limiting protrusion 420 is detachably connected to the mating body 430 via a connecting screw. It is understood that the limiting protrusion 420 can also be detachably connected to the mating body 430 via a second connecting structure 720, such as a snap-fit ​​structure, a plug-in structure, or a magnetic structure.

[0094] The detachable connection design not only facilitates the installation of the limiting protrusion 420 onto the mating body 430, but also allows for the individual disassembly and replacement of the limiting protrusion 420, which is subject to high-frequency forces, reducing maintenance costs and complexity. Furthermore, the detachable connection design allows for flexible selection of the appropriate limiting protrusion 420 based on the actual parameters of the movable blackboard 200, without being limited by the factory configuration of the fixed blackboard 100, thus improving usability.

[0095] Reference Figure 1 , Figure 2 as well as Figures 7 to 9 In one embodiment, the push-pull blackboard further includes a first slide rail 500 disposed on the fixed blackboard 100, and a first mounting body 310 disposed on the first slide rail 500; a second mounting body 410 is slidably disposed within the first slide rail 500 along a first direction, and the second mounting member 400 further includes a damping body 440 disposed on the second mounting body 410 and in contact with the first slide rail 500 to apply resistance to the movable blackboard 200.

[0096] In this embodiment, the first slide rail 500 is arranged along a first direction and connected to the first connecting structure 510 by connecting screws. The first connecting structure 510 is a connecting strip or a connecting rod, and is indirectly connected to the fixed blackboard 100 by connecting screws. The first mounting body 310 is installed inside the first slide rail 500 by connecting screws. The damping body 440 is damping foam, and the damping body 440 is in close contact with the contact wall surface of the first slide rail 500; it can be understood that the damping body 440 can also be a rubber damping block, a cloth damping strip, or a metal damping sheet.

[0097] The first slide rail 500 provides a defined path for the sliding of the movable blackboard 200, ensuring stable movement of the movable blackboard 200 along the first direction and preventing jamming or shaking caused by track deviation. The resistance generated by the damping body 440 in contact with the first slide rail 500 not only works with the limiting protrusion 420 and the limiting groove 3211 to limit the shaking of the movable blackboard 200 in the writing position, thus ensuring its stability, but also slows down the sliding speed of the movable blackboard 200, making its sliding more controllable and enhancing the safety of its operation, reducing the risk of pinching fingers or colliding with the fixed blackboard 100. Furthermore, the damping body 440, which slides within the first slide rail 500, also serves to clean the first slide rail 500.

[0098] Reference Figures 7 to 11In one embodiment, the first slide rail 500 has a first inner wall surface 520 and a second inner wall surface 530 disposed opposite to each other along a second direction, the second direction being perpendicular to the first direction; the second mounting body 410 is provided with a plurality of pulleys 450 spaced apart along the first direction, at least one of the plurality of pulleys 450 is in contact with the first inner wall surface 520, and at least one pulley 450 is in contact with the second inner wall surface 530.

[0099] In this embodiment, the second direction is parallel to the thickness direction of the fixed blackboard 100, and there are two pulleys 450. One of the two pulleys 450 contacts only the first inner wall surface 520, and the other contacts only the second inner wall surface 530. It can be understood that the two pulleys 450 may also contact both the first inner wall surface 520 and the second inner wall surface 530; the number of pulleys 450 may also be three, four or more.

[0100] The above structural design not only forms a two-way limiting guide to ensure that the second mounting body 410 always moves linearly along the first direction, improving the accuracy of the sliding of the second mounting body 410; at the same time, it also facilitates the installation of the pulley 450 into the first slide rail 500, reducing the impact of the manufacturing errors of the first slide rail 500 and the pulley 450.

[0101] In addition, the multiple pulleys 450 can distribute the weight of the movable blackboard 200 and the force during sliding to the pulleys 450 at different positions, thereby extending the service life of the pulleys 450; they can also improve the smoothness of the sliding of the movable blackboard 200 and reduce sliding resistance.

[0102] Reference Figure 1 , Figure 9 , Figure 12 as well as Figure 13 In one embodiment, the push-pull blackboard further includes a second slide rail 600, which is disposed on the fixed blackboard 100 and spaced apart from the first slide rail 500 along a third direction, the third direction being perpendicular to the first direction; the movable blackboard 200 is provided with a slider 700, which is slidably disposed within the second slide rail 600 along the first direction.

[0103] In this embodiment, the second slide rail 600 is arranged along a first direction, and the third direction is parallel to the height direction of the fixed blackboard 100. Specifically, the second slide rail 600 is arranged below the fixed blackboard 100, and the first slide rail 500 is arranged above the fixed blackboard 100. It can be understood that the second slide rail 600 may also be arranged above the fixed blackboard 100, and the first slide rail 500 may be arranged below the fixed blackboard 100. The sliding member 700 includes a pulley assembly 710 and a second connecting structure 720. The pulley assembly 710 is mounted on the second connecting structure 720, and the second connecting structure 720 is mounted on the movable blackboard 200 by connecting screws.

[0104] The first slide rail 500 and the second slide rail 600, used in conjunction, not only constrain the sliding of the movable blackboard 200 from different positions, enhancing guiding accuracy and reducing the risk of the movable blackboard 200 sliding off course, but also allow the pulley 450 on the first slide rail 500 and the slider 700 on the second slide rail 600 to share the weight of the movable blackboard 200 and the forces exerted during sliding, reducing wear on the first slide rail 500, pulley 450, second slide rail 600, and slider 700, thus extending the service life of the entire sliding system. Furthermore, the dual-slide rail structure creates redundancy, improving reliability and safety, and reducing the risk of the movable blackboard 200 becoming completely jammed and unable to slide.

[0105] In addition, to improve the smoothness of sliding, the movable blackboard 200 is provided with two sliding members 700, which are spaced apart along the first direction. To ensure smooth sliding of the pulley assembly 710 and to facilitate installation into the second slide rail 600, one of two adjacent pulleys in the pulley assembly 710 contacts the upper wall surface of the second slide rail 600, and the other contacts the lower wall surface of the second slide rail 600.

[0106] Reference Figures 1 to 4 as well as Figure 9 In one embodiment, the fixed blackboard 100 is provided with two first mounting members 300, which are arranged facing each other along a first direction; the movable blackboard 200 is provided with two second mounting members 400, which are arranged opposite to each other along the first direction and located between the two first mounting members 300.

[0107] In this embodiment, the two first mounting members 300 are arranged facing each other, meaning the two limiting recesses 320 are face-to-face; the two second mounting members 400 are arranged back-to-back, meaning the two limiting protrusions 420 are back-to-back. The writing position includes two states; specifically, both the fixed blackboard 100 and the movable blackboard 200 have opposing writing surfaces and back surfaces. The movable blackboard 200 has a covered state and an unfolded state. When the movable blackboard 200 is in the covered state, the back surface of the movable blackboard 200 completely covers the writing surface of the fixed blackboard 100, and the movable blackboard 200 is restricted from sliding by a set of cooperating limiting protrusions 420 and limiting grooves 3211. At this time, the movable blackboard 200 is in the writing position. When the movable blackboard 200 is in the unfolded state, the writing surface of the fixed blackboard 100 is completely exposed, and the movable blackboard 200 is restricted from sliding by another set of cooperating limiting protrusions 420 and limiting grooves 3211. At this time, the movable blackboard 200 is also in the writing position. Figure 1 One of the movable blackboards 200 is in a covered state, and the other movable blackboard 200 is in an unfolded state.

[0108] Furthermore, the first direction is a bidirectional direction. Specifically, when the limiting protrusion 420 on a second mounting member 400 moves toward the corresponding limiting recess 320, the first direction is the direction in which the limiting protrusion 420 moves toward the corresponding limiting recess 320. The opposite direction of this first direction is the direction in which the limiting protrusion 420 moves away from the corresponding limiting recess 320. The second and third directions are also bidirectional directions.

[0109] The two first mounting components 300 and two second mounting components 400 used in conjunction not only enable the movable blackboard 200 to have two writing positions and achieve precise positioning of the two writing positions, but also form a redundant design, reducing the risk that the movable blackboard 200 will fail to position due to the failure of a single first mounting component 300 or second mounting component 400, thus improving the reliability of the positioning of the movable blackboard 200.

[0110] Reference Figure 1 as well as Figure 9 In one embodiment, there are two fixed blackboards 100 and two movable blackboards 200, with each movable blackboard 200 corresponding to one of the two fixed blackboards 100; the two movable blackboards 200 can move towards or away from each other along a first direction.

[0111] In this embodiment, after the two movable blackboards 200 move towards each other in the first direction to their extreme positions, the two movable blackboards 200 respectively cover the two fixed blackboards 100; after the two movable blackboards 200 move away from each other in the first direction to their extreme positions, the two movable blackboards 200 are located on opposite sides of the two fixed blackboards 100, so that the writing surfaces of both fixed blackboards 100 are fully exposed. It is understood that the number of fixed blackboards 100 and movable blackboards 200 can also be one; the number of fixed blackboards 100 and movable blackboards 200 depends on actual needs and is not specifically limited here.

[0112] Reference Figures 1 to 13 According to another aspect of this application, embodiments of this application also provide an intelligent blackboard device. The intelligent blackboard device includes a display screen 800 and the aforementioned push-pull blackboard. The push-pull blackboard includes two fixed blackboards 100 and two movable blackboards 200. The fixed blackboards 100 are located on one side of the display screen 800 in a first direction and are disposed on the display screen 800. The two movable blackboards 200 can move towards or away from each other in the first direction and can cover the display screen 800.

[0113] In this embodiment, the display screen 800 is a conventional display device, and its specific structure is not limited here. Both the fixed blackboard 100 and the movable blackboard 200 have oppositely arranged writing surfaces and back surfaces. The movable blackboard 200 is located on the side of the fixed blackboard 100 whose writing surface is away from its back surface. The movable blackboard 200 has a covered state and an unfolded state. When both movable blackboards 200 are in the covered state, the back surface of the movable blackboard 200 completely covers the writing surface of the fixed blackboard 100, and the display screen 800 is fully exposed to ensure normal use of the display screen 800. When both movable blackboards 200 are in the unfolded state, the writing surface of the fixed blackboard 100 is fully exposed, and the movable blackboard 200 covers the display screen 800 to protect it.

[0114] The fixed blackboard 100 in this application supports writing with regular chalk or whiteboard markers, meeting traditional blackboard writing needs (such as temporary calculations and highlighting key points), while the display screen 800 can realize multimedia teaching functions such as courseware playback, video display, and interactive demonstrations. By pushing and pulling the movable blackboard 200, the display screen 800 can be flexibly covered or exposed, thereby quickly switching between traditional blackboard writing and digital content modes without the need to divide the two into separate areas, enabling the intelligent blackboard device to adapt to diverse application scenarios.

[0115] Furthermore, both the first slide rail 500 and the second slide rail 600 are mounted on the display screen 800. Specifically, the first slide rail 500 is connected to the first connecting structure 510, and the first connecting structure 510 is connected to the display screen 800; the second slide rail 600 is directly mounted below the display screen 800. To improve the aesthetics of the intelligent blackboard device, the first slide rail 500 is located on one side of the display screen 800 in the second direction and is covered by the display screen 800 and the fixed blackboard 100; the second slide rail 600 is inverted and mounted below the display screen 800, that is, the opening of the second slide rail 600 is set to face away from the display screen 800.

[0116] In summary, implementing the push-pull blackboard and intelligent blackboard device provided in this embodiment has at least the following beneficial technical effects: The above-mentioned structural design locks the movable blackboard 200 in the writing position through the mechanical limiting structure 322, such as the limiting protrusion 420 and the limiting recess 320, which can effectively reduce the risk of the movable blackboard 200 sliding due to touching or writing force, ensure continuous writing and accurate position, and reduce the situation of repeated writing or correction due to sliding.

[0117] Meanwhile, the limiting protrusion 420 and limiting recess 320 used in conjunction only take effect when the movable blackboard 200 is in the writing position, without affecting the normal sliding switching of the movable blackboard 200, so that the movable blackboard 200 has both locking stability and sliding flexibility.

[0118] In addition, the mechanical combination of the limiting protrusion 420 and the limiting recess 320 eliminates the need for complex electrical control components, resulting in low cost, easy maintenance, and suitability for high-frequency use scenarios such as schools and conference rooms. Furthermore, it is wear-resistant, has a long lifespan, and can stably perform its limiting function over a long period of time.

[0119] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. It should be noted that, for those skilled in the art, several equivalent obvious modifications and / or equivalent substitutions can be made without departing from the technical principles of this application, and these obvious modifications and / or equivalent substitutions should also be considered within the scope of protection of this application.

Claims

1. A push-pull blackboard, characterized in that, It includes a fixed blackboard (100) and a movable blackboard (200), the movable blackboard (200) being able to slide relative to the fixed blackboard (100) along a first direction and having a writing position; one of the fixed blackboard (100) and the movable blackboard (200) is provided with a limiting protrusion (420) and the other is provided with a limiting recess (320); When the active blackboard (200) is in the writing position, the limiting protrusion (420) is inserted into the limiting recess (320), and the limiting recess (320) is used to prevent the limiting protrusion (420) from disengaging from the limiting recess (320) in the opposite direction of the first direction.

2. The push-pull blackboard according to claim 1, wherein, The limiting recess (320) includes a limiting body (321) and a limiting structure (322). The limiting body (321) is provided with a limiting groove (3211). The limiting structure (322) is disposed on the groove wall of the limiting groove (3211) and can extend and retract along a second direction. The second direction intersects with the first direction. When the active blackboard (200) is in the writing position, the limiting protrusion (420) is inserted into the limiting groove (3211), and the limiting structure (322) prevents the limiting protrusion (420) from disengaging from the limiting groove (3211) in the opposite direction of the first direction by contacting the limiting protrusion (420).

3. The push-pull blackboard according to claim 2, wherein, The limiting structure (322) is an elastic plunger, and the groove wall of the limiting groove (3211) is provided with an installation groove (3212). The elastic plunger is fixedly installed in the installation groove (3212), and the head component (3221) of the elastic plunger can extend and retract along the second direction; the surface of the limiting protrusion (420) is provided with a limiting recess (421). When the movable blackboard (200) is in the writing position, the head part (3221) of the elastic plunger is inserted into the limiting recess (421) to prevent the limiting protrusion (420) from disengaging from the limiting groove (3211) in the opposite direction of the first direction.

4. The push-pull blackboard according to any one of claims 1 to 3, characterized in that, The push-pull blackboard also includes a first mounting component (300) and a second mounting component (400). The first mounting component (300) includes a first mounting body (310) and the limiting recess (320). The first mounting body (310) is disposed on the fixed blackboard (100), and the limiting recess (320) is disposed on the first mounting body (310). The second mounting component (400) includes a second mounting body (410) and the limiting protrusion (420). The second mounting body (410) is disposed on the movable blackboard (200), and the limiting protrusion (420) is disposed on the second mounting body (410).

5. The push-pull blackboard according to claim 4, wherein, One of the first mounting body (310) and the second mounting body (410) is provided with a buffer (330); when the movable blackboard (200) is in the writing position, the buffer (330) is in a compressed state.

6. The push-pull blackboard according to claim 5, wherein, The buffer (330) is disposed on the first mounting body (310) and is located on the same side of the first mounting body (310) as the limiting recess (320); The second mounting component (400) further includes a mating body (430), which is disposed on the second mounting body (410); when the movable blackboard (200) is in the writing position, the buffer body (330) contacts the mating body (430).

7. The push-pull blackboard of claim 4, wherein, The push-pull blackboard also includes a first slide rail (500), which is disposed on the fixed blackboard (100), and the first mounting body (310) is disposed on the first slide rail (500); The second mounting body (410) is slidably disposed within the first slide rail (500) along the first direction. The second mounting member (400) further includes a damping body (440), which is disposed on the second mounting body (410) and contacts the first slide rail (500) to apply resistance to the movable blackboard (200).

8. The push-pull blackboard according to claim 7, wherein, The first slide rail (500) has a first inner wall surface (520) and a second inner wall surface (530) disposed opposite to each other along a second direction, the second direction being perpendicular to the first direction; The second mounting body (410) is provided with a plurality of pulleys (450) spaced apart along the first direction. At least one of the pulleys (450) is in contact with the first inner wall surface (520), and at least one of the pulleys (450) is in contact with the second inner wall surface (530); and / or, The push-pull blackboard also includes a second slide rail (600), which is disposed on the fixed blackboard (100) and spaced apart from the first slide rail (500) along a third direction, wherein the third direction is perpendicular to the first direction; The movable blackboard (200) is provided with a slider (700), which is slidably disposed in the second slide rail (600) along the first direction.

9. The push-pull blackboard according to claim 4, characterized in that, The fixed blackboard (100) is provided with two first mounting parts (300), and the two first mounting parts (300) are arranged facing each other along the first direction; The movable blackboard (200) is provided with two second mounting members (400), which are arranged opposite to each other along the first direction and located between the two first mounting members (300).

10. An intelligent blackboard apparatus, characterized by, The device includes a display screen (800) and a push-pull blackboard according to any one of claims 1 to 9. The push-pull blackboard includes two fixed blackboards (100) and two movable blackboards (200). The fixed blackboards (100) are located on one side of the display screen (800) in the first direction and are disposed on the display screen (800). The two movable blackboards (200) are capable of moving towards or away from each other along the first direction and are capable of covering the display screen (800).

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