A wiring protection device, a line connection component, and a smart blackboard

Abstract

This invention discloses a wiring protection device, a wiring connection component, and a smart blackboard, relating to the technical field of electronic devices. The wiring protection device is applied to wiring connection components and smart blackboards. The device includes a main body defining a wiring space. A first wiring channel and a wire insertion channel are arranged at an angle. A second wire outlet connects to the end of the wire insertion channel near the second abutment structure to form a second wiring channel, which is also arranged at an angle to the wire insertion channel. In applications with wiring connection components and smart blackboards, when the connecting wire is dragged or pulled, the wire body will abut against the first or second abutment structure, effectively reducing the risk of the connector loosening under stress and tension, strengthening the reliability of the connection between the connecting wires, and improving the reliability of the connection between devices.

Description

Technical Field

[0001] This invention relates to the technical field of electronic devices, and more particularly to a wiring protection device, a line connection component, and a smart blackboard. Background Technology

[0002] In electronic display technologies, to meet various needs, it is sometimes necessary to combine two or more screens to form a splicing screen, thereby expanding the display or interactive area. The smart blackboard is one type of splicing screen, typically consisting of a main screen and two secondary screens positioned on either side of the main screen. Data transmission between the main and secondary screens is achieved via an adapter cable. The main screen is an independent unit, while the secondary screens record blackboard writing. Simultaneously, the recorded content can be displayed on the main screen, combining traditional and electronic teaching methods to improve teaching quality.

[0003] In existing splicing screen installation structures, the screens can be relatively slidable by a sliding structure that combines guide rails and rollers, thereby enabling the secondary screen to move relative to the main screen through manual pushing or other driving methods.

[0004] However, as the secondary screen moves relative to the primary screen, one end of the adapter cable moves with it. This causes the connector of the adapter cable to be pulled and dragged by the adapter cable body during the movement of the secondary screen, resulting in the connector becoming loose. This makes it difficult to guarantee the reliability of the connection between the secondary screen and the primary screen, reduces the service life of the adapter cable, and increases the damage rate of the entire device due to the easy disconnection between the primary and secondary screens, greatly reducing the user experience. Summary of the Invention

[0005] The purpose of this invention is to provide a wiring protection device, a line connection component, and a smart blackboard. By setting a first line-stopping structure and a second line-stopping structure, the adapter cable acts on the line-stopping structure during the pulling process, thus solving the problem of the connector loosening under force during the stretching process of the adapter cable.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, a wiring protection device is provided for use in a combined touchscreen, the wiring protection device comprising:

[0008] The device body defines a wiring space. A first wire passage and a second wire passage are provided at intervals on the device body. Both the first wire passage and the second wire passage provide space for wires to pass through.

[0009] The first anti-line structure is disposed on the side of the wiring space near the first wire passage;

[0010] The second abutment structure is disposed on the side of the wiring space near the second wire passage, and the first abutment structure and the second abutment structure are spaced apart to form a wire insertion channel;

[0011] The first wire passage is connected to the end of the wire insertion channel near the first wire support structure to form a first wiring channel, and the first wiring channel and the wire insertion channel are set at an angle.

[0012] The second wire passage is connected to the end of the wire insertion channel near the second abutment structure to form a second wiring channel, and the second wiring channel and the wire insertion channel are set at an angle.

[0013] Secondly, a line connection component is provided, comprising:

[0014] Wiring protection device as described above;

[0015] The first connecting line includes a first wire body and a first connector, the first connector is placed in the wire insertion channel, and the first wire body is connected to the first connector along the first wiring channel around the first abutment structure.

[0016] The second connecting line includes a second wire body and a second connector. The second connector is placed in the wire insertion channel. The second wire body is connected to the second connector along the second wiring channel around the second abutment structure. The first connector and the second connector are connected along the insertion direction.

[0017] Thirdly, a smart blackboard is provided, including:

[0018] The line connection components as described above;

[0019] The main screen body is electrically connected to the first line body;

[0020] At least one sub-screen is electrically connected to the second line body, and the sub-screen and the main screen are movable relative to each other;

[0021] The wiring protection device is located between the main screen and the sub-screen.

[0022] The beneficial effects of the present invention are as follows: the wiring protection device sets a first wire-stopping structure and a second wire-stopping structure in the wiring space defined by the device body, wherein the first wiring channel and the wire insertion channel on both sides of the first wire-stopping structure and the second wiring channel and the wire insertion channel on both sides of the second wire-stopping structure form a bent channel structure.

[0023] In the wiring configuration of the wiring components and the smart blackboard, one end of the connecting wire travels along the first wiring channel, around the first abutment structure, and enters the wire insertion channel. The other end of the connecting wire travels along the second wiring channel, around the second abutment structure, and enters the wire insertion channel. The two connecting wires are connected within the wire insertion channel via a connector. When the connecting wire is dragged or pulled, the wire body will abut against the first or second abutment structure. The connecting wire will transfer a portion of the pulling force to the abutment structure, creating a component force on the abutment structure. This reduces the tensile force exerted by the connecting wire on the connector, effectively lowering the risk of the connector loosening due to tension, enhancing the reliability of the connection between the connecting wires, and improving the reliability of the connection between devices. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the internal structure of the wiring protection device according to an embodiment of the present invention;

[0026] Figure 2 This is one of the schematic diagrams of the smart blackboard structure described in the embodiments of the present invention;

[0027] Figure 3 This is a second schematic diagram of the smart blackboard structure described in an embodiment of the present invention;

[0028] Figure 4 for Figure 3 Enlarged schematic diagram of part A;

[0029] Figure 5 This is a partial bottom view of the smart blackboard described in an embodiment of the present invention;

[0030] Figure 6 for Figure 5 Enlarged schematic diagram of part B;

[0031] Figure 7 This is a schematic diagram of the line connection component structure according to an embodiment of the present invention;

[0032] Figure 8 This is a force analysis diagram of the line connection component described in an embodiment of the present invention;

[0033] Figure 9 This is an exploded view of the protective casing described in an embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the expansion circuit board connection structure according to an embodiment of the present invention.

[0035] In the diagram: 10. Device body; 11. First wire passage; 12. Second wire passage; 13. First wire-stopping structure; 131. First winding post; 132. First partition plate; 14. Second wire-stopping structure; 141. Second winding post; 142. Second partition plate; 15. Wire insertion channel; 16. First wiring channel; 17. Second wiring channel; 18. Protective housing; 181. Top plate; 182. Bottom plate; 183. Side plate; 1831. First channel plate; 1832. First outer shell plate; 1833. 1834. Second channel plate; 19. Hanging component; 191. Hanging part; 20. First connecting line; 21. First line body; 22. First connector; 30. Second connecting line; 31. Second line body; 32. Second connector; 40. Sub-screen body; 41. Sliding support; 50. Wall mount bracket; 51. Wall mount beam; 511. Inspection port; 52. Sliding structure; 521. Slide rail; 522. Pulley assembly; 53. Guide rod; 60. Fixed blackboard; 70. Expansion circuit board. Detailed Implementation

[0036] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] This embodiment provides a wiring protection device, which is mainly used in combined touch screens. Its purpose is to solve the problem of low connection reliability and easy loosening of the connector caused by the pulling of the connecting wires during the relative movement of the screens.

[0040] like Figures 2-3 As shown, the aforementioned combined touchscreen is a smart blackboard. A smart blackboard generally refers to a device consisting of two or more touch-operated panels that can be spliced ​​together along the edges or stacked on top of each other. The panels can change their position through corresponding moving structures. These panels can be display devices or other functional products such as writing tablets. The smart blackboard integrates touch functionality while providing electronic display capabilities. It is a touch-screen tablet that replaces traditional one-way / passive viewing large-size business displays / projectors. Suitable for close-range viewing and operation, it utilizes multi-point infrared, optical, and other interactive touch and writing technologies, highly integrating writing, annotation, touch, wireless communication, wireless interaction, system interconnection, and remote data interaction functions, providing an active / two-way human-computer interaction experience.

[0041] Currently, commonly used smart blackboards include a main screen (not shown) and a secondary screen 40. The main screen can be a touch-enabled display, which uses touch technology to determine the location of the touch point and display the user's touch trajectory on the screen. The secondary screen 40 is a touch-enabled writing board, or a touch-enabled display similar to the main screen. Furthermore, the smart blackboard uses touch technology to operate the content displayed on the screen, display touch trajectories, and achieve human-computer interaction. The secondary screen 40 can record blackboard writing, and the recorded content can be displayed on the main screen. The main screen can also integrate one or more functions such as a projector, whiteboard, screen, speakers, television, and video conferencing terminal. In practical applications, the hardware of the smart blackboard main screen consists of a touch module, a display module, and an intelligent processing system, all integrated together by a structural component and supported by a dedicated software system. The display module and touch membrane work together to achieve display and touch functions. Users can interact with the display screen using their fingers or a stylus. The intelligent processing system generates handwriting based on the user's touch input and displays it on the screen, or generates control operations based on the user's touch input to process the content displayed on the screen.

[0042] Of course, the aforementioned smart blackboard can also be a simple touch tablet, which does not have two-way interactive functionality, but simply collects the user's touch trajectory and displays the touch trajectory on the display module.

[0043] Specifically, the main screen and the secondary screen 40 of the smart blackboard are electrically connected to realize the transmission of touch information. In order to improve the convenience and flexibility of the teaching process, the main screen and the secondary screen 40 can move relative to each other. In the installed state of the smart blackboard, the main screen is fixed at the target position by the wall bracket 50. Here, the target position is a wall or other target device. The target device can be a bracket or other support structure. The target is set or the wall surface forms a corresponding support surface. The wall bracket 50 provides the support surface installation position, so that the smart blackboard can be mounted on the support surface of the target position. In order to realize the relative movement between the main screen and the secondary screen 40, the main screen, as the fixed display screen of this embodiment, is fixedly installed at the target position by the wall bracket 50, while the secondary screen 40 is slidably installed on the wall bracket 50 and is slidably connected to the wall bracket 50 by the sliding structure 52.

[0044] Furthermore, the wall-mounted bracket 50 includes wall-mounted beams 51 disposed on the upper and lower sides of the smart blackboard. The wall-mounted beams 51 provide the installation position of the aforementioned support surface through corresponding installation structures. The upper and lower sides of the main screen are fixedly connected to the wall-mounted beams 51 disposed on the upper and lower sides. Both ends of the wall-mounted beams 51 extend outward toward the left and right ends of the main screen, thereby providing the installation position of the sub-screen 40. In this embodiment, the sliding structure 52 includes a slide rail 521 disposed in the wall-mounted beams 51 and a pulley assembly 522 disposed on the sub-screen 40. 521 is set along the length of the wall-mounted beam 51, so that when the pulley assembly 522 is slidably set on the slide rail 521, the sub-screen body 40 can slide back and forth left and right in the direction of approaching and moving away from the main screen body as guided by the pulley assembly 522 and the slide rail 521. At the same time, in order to limit the extreme position of the sub-screen body 40, a limiting structure is set on the wall-mounted beam 51 or the slide rail 521, so that when the sub-screen body 40 moves to the corresponding extreme position, the sub-screen body 40 or the pulley assembly 522 can abut against the limiting structure, thereby limiting the continued movement of the sub-screen body 40.

[0045] It is understood that the sliding structure 52 mentioned in this embodiment can be, in addition to the structure described above, other forms of sliding structure 52 such as sliding cooperation between slide rail 521 and slider, or installation method in which pulley assembly 522 / slider is set on wall-mounted beam 51 and slide rail 521 is set on sub-screen body 40.

[0046] Specifically, in this embodiment, the smart blackboard includes a main screen and a secondary screen 40, as well as a fixed blackboard 60. The fixed blackboard 60 is fixedly installed on the wall-mounted beam 51, and its upper and lower edges are respectively fixedly connected to the upper and lower wall-mounted beams 51 on both sides. The fixed blackboard 60 can be a traditional chalkboard, which is assembled onto one side of the main screen via the wall-mounted beams 51. In this embodiment, there are two fixed blackboards 60, which are placed on the left and right sides of the main screen, respectively. That is, the edges of the main screen and the edges of the fixed blackboard 60 abut against each other, so that the main screen and the fixed blackboard 60 are combined into a whole. The secondary screen 40 is slidably installed on the front side of the main screen and the fixed blackboard 60. In this way, the secondary screen 40 can slide between the main screen and the fixed blackboard 60, selectively covering the front side of the main screen or the fixed blackboard 60 according to the user's needs.

[0047] It should be noted that, as Figures 2-3 As shown in the diagram, in this invention, for the main screen, in the smart blackboard's usage state, the side of the main screen facing the user for electronic display is the front side of the smart blackboard, which is the "front" direction indicated by the arrow in the attached diagram. Conversely, the side of the main screen away from the user is the rear side of each component, which is the "rear" direction indicated by the arrow in the attached diagram. Furthermore, when the front side of the main screen faces the user, the left side seen by the user is also the left side of the smart blackboard, which is the "left" direction indicated by the arrow in the attached diagram. Conversely, when the front side of the main screen faces the user, the right side seen by the user is also the right side of the smart blackboard, which is the "right" direction indicated by the arrow in the attached diagram.

[0048] In the aforementioned related technologies, during the use of the combined touch screen and smart blackboard, as the secondary screen 40 moves relative to the main screen, one end of the connection cable used for data transmission between the main screen and the secondary screen 40 moves with the secondary screen 40. This causes the connector to be pulled and dragged by the cable body during the movement of the secondary screen 40, leading to loosening of the connector. This makes it difficult to guarantee the reliability of the wiring between the secondary screen 40 and the main screen, reducing the lifespan of the connection cable. Furthermore, the increased likelihood of disconnection between the main and secondary screens increases the overall damage rate of the device, significantly reducing the user experience. Therefore, this embodiment provides the following solution.

[0049] like Figure 1As shown, this embodiment provides a wiring protection device, which includes a device body 10. The device body 10 defines a wiring space, which provides a passage for the connecting wires to pass through, so that the connecting wires between the main screen and the sub-screen 40 can be connected within the wiring space. To solve the aforementioned problems, the device body 10 is provided with a first wire passage 11 and a second wire passage 12 at intervals. Both the first wire passage 11 and the second wire passage 12 provide space for the connecting wires / conductors to pass through. When the main screen and the sub-screen 40 are electrically connected by connecting wires to realize data transmission, the first connecting wire 20 extending from the main screen passes through the first wire passage 11 into the wiring space, and the second connecting wire 30 extending from the sub-screen 40 passes through the second wire passage into the wiring space. Specifically, the first connecting line 20 includes a first wire body 21 and a first connector 22. The first connector 22 is connected to one end of the first wire body 21 and is arranged in the wiring space in the manner described above through the first wire body 21. The second connecting line 30 includes a second wire body 31 and a second connector 32. The second connector 32 is connected to one end of the second wire body 31 and is arranged in the wiring space in the manner described above through the second wire body 31 and is connected to the first connector 22 along the insertion direction. It can be understood that the first connector 22 and the second connector 32 can be a male plug and a female plug. The male plug and the female plug can be inserted in the first direction to achieve electrical connection, and can be disconnected in the second direction opposite to the first direction, thereby defining the insertion direction and the removal direction.

[0050] In other splicing combination screen applications, the end of the first line 21 away from the first connector 22 provides the connection end of one of the screens, and the end of the second line 31 away from the second connector 32 provides the connection end of another screen. In this way, the first connecting line 20, the second connecting line 30 and the above-mentioned wiring protection device can be combined to form a line connection component, which can be applied to different splicing combination screen devices to improve the wiring reliability of the connection lines between screens.

[0051] Here, the device body 10 of this embodiment can be a plate structure. By setting a corresponding winding structure on the plate structure device body 10, a wiring space for arranging connecting wires is formed on the plate surface. The wire passage can be formed by the cooperation between the winding structures. The device body 10 can also be a box structure. By setting a corresponding winding structure in the hollow box, a wiring space for arranging connecting wires is formed in the box, and the wire passage is opened on the surface of the box structure.

[0052] like Figures 1-7As shown, specifically, a first abutment structure 13 and a second abutment structure 14 are provided in the wiring space. The first abutment structure 13 and the second abutment structure 14 serve as the aforementioned winding structure. The first abutment structure 13 is located on the side of the wiring space near the first wire passage 11, and the second abutment structure 14 is located on the side of the wiring space near the second wire passage 12. The first abutment structure 13 and the second abutment structure 14 are spaced apart to form a wire insertion channel 15 between them, which provides for the insertion and mating of the first connector 22 and the second connector 32.

[0053] Based on the two different structures of the device body 10 provided in this embodiment, when the device body 10 is a plate structure, the first wire passage 11 is formed at the end of the first wire abutment structure 13 away from the wire insertion channel 15, and the second wire passage 12 is formed at the end of the second wire abutment structure 14 away from the wire insertion channel 15. When the device body 10 has a box-like structure, the first wire passage 11 and the second wire passage 12 can be formed on the device body 10, or they can be formed by the cooperation between the surface of the device body 10 and the first wire-stopping structure 13 or the second wire-stopping structure 14. In this embodiment, in order to simplify the structure of the device body 10 and save its space, the first wire passage 11 and the end of the wire insertion channel 15 near the first wire-stopping structure 13 are connected to form the first wiring channel 16. It can also be understood that the first end of the wire insertion channel 15 and the first wire passage 11 are connected to form the first wiring channel 16. The second wire passage 12 and the end of the wire insertion channel 15 near the second wire-stopping structure 14 are connected to form the second wiring channel 17. It can also be understood that the second end of the wire insertion channel 15 and the second wire passage 12 are connected to form the second wiring channel 17.

[0054] The second wiring channel 17 and the wire insertion channel 15 are set at an angle, and the first wiring channel 16 and the wire insertion channel 15 are also set at an angle. The angles between these two channels and the wire insertion channel 15 can be the same, thus forming a symmetrical channel structure on both sides of the wiring space. Alternatively, the angles of the two channels relative to the wire insertion channel 15 can be different. Through this arrangement, two bent wire-passing channels are formed between the first wiring channel 16 and the wire insertion channel 15, and between the second wiring channel 17 and the wire insertion channel 15, respectively. Thus, the first wiring channel 16, the wire insertion channel 15, and the second wiring channel 17 are sequentially connected, dividing the wiring space into a meandering channel structure. In the wiring state of the line connection components, and in the application of combined touch screen and smart blackboard, the first wire body 21 of the first connecting wire 20 is used to connect one end of the first connector 22 through the first wire through port 11 and enters the first wiring channel 16. The first wire body 21 passes around the first abutment structure 13 along the first wiring channel 16 and then enters the wire insertion channel 15. The second wire body 31 of the second connecting wire 30 is used to connect one end of the second connector 32 through the second wire through port 12 and enters the second wiring channel 17. The second wire body 31 passes around the second abutment structure 14 along the second wiring channel 17 and then enters the wire insertion channel 15. The first connector 22 and the second connector 32 are finally placed in the wire insertion channel 15 along with the arrangement of the first wire body 21 and the second wire body 31.Understandably, both the first connecting line 20 and the second connecting line 30 have at least one bend within the wiring space. When relative movement occurs between the screens (between the sub-screen 40 and the main screen), the first connecting line 20 and / or the second connecting line 30 will move along with the screens, causing at least one combination of the following: the first connecting line 20 and the main screen, the second connecting line 30 and the sub-screen 40, or the first connecting line 20 and the second connecting line 30. If the first connecting line 20 is dragged or pulled at this time, the direction of the pull is defined by the first wiring channel 16. The first connector, at one end connected to the main screen, will be pulled away from the wire insertion channel 15 along the direction defined by the first wiring channel 16. If the second connector 30 is pulled, the direction of the pull is the same as the direction defined by the second wiring channel 17. The second connector, at one end connected to the sub-screen 40, will be pulled away from the wire insertion channel 15 along the direction defined by the second wiring channel 17. Here, due to the presence of the first abutment structure 13 and the second abutment structure 14, when the first wire 21 is pulled, it will be located in the first wiring channel 16... The first wire 21 between channel 16 and wire insertion channel 15 abuts against the first abutment structure 13. The second wire 31 between the second wiring channel 17 and wire insertion channel 15, when pulled, abuts against the second abutment structure 14. The first wire 21 contributes a portion of the pulling force to the first abutment structure 13, and the second wire 31 contributes a portion of the pulling force to the second abutment structure 14, thus creating component forces on the first abutment structure 13 and the second abutment structure 14 respectively, thereby reducing the force between the first wire 21 and the second wire 31. The tension applied to the first connector 22 and the second connector 32 by 31 effectively reduces the risk of loosening caused by the pull-out tension between the first connector 22 and the second connector 32. This strengthens the reliability of the connection between the connecting wires and improves the reliability of the connection between the devices. In this way, when the sub-screen body 40 moves relative to the main screen body, the wire-stopping structure in the wiring protection device can offset part of the tension that is transmitted to the connector by the pulling of the connecting wire, ensuring the effective connection between the main screen body and the sub-screen body 40 during use and improving the user experience.

[0055] As described above, when the device body 10 has a plate structure, one side of the wiring space on the device body 10 is an open structure. The first connecting wire 20 and the second connecting wire 30 are directly embedded into the wiring space on the open side, without having to pass through the wiring space from the first wire through port 11 and the second wire through port 12 respectively. This improves the wiring efficiency of the connecting wires and reduces the difficulty of arranging the connecting wires. When the device body 10 has a box structure, the box structure can also be designed with a separate box body and a box cover. By placing the wire-blocking structure inside the box body, during wiring, the box cover can be removed to create an open wiring space on one side of the box body, thus also enabling the wiring method of directly embedding the connecting wires.

[0056] It is understandable that the device body 10 can be a plate structure, a box structure, or other component structure that can provide corresponding wiring space, as long as it can provide wiring space and a wire-blocking structure that can be pulled apart when the connecting wire is pulled.

[0057] Furthermore, the angle between the first wiring channel 16 and the wire insertion channel 15 is less than or equal to 90°; the angle between the second wiring channel 17 and the wire insertion channel 15 is less than or equal to 90°. By setting the angle between the channels to be less than 90°, when the connecting wire receives a force in the pull-out direction, the first connecting wire 20 can effectively abut against the first abutment structure 13, and / or the second connecting wire 30 can more effectively abut against the second abutment structure 14. The angle between the contact surfaces of the connecting wire and the abutment structure is greater than 90°, which allows the connecting wire (first connecting wire 20 / second connecting wire 30) to exert a greater force on the abutment structure (first abutment structure 13 / second abutment structure 14), allowing the abutment structure to withstand a greater force from the connecting wire, and further reducing the force in the pull-out direction between the first connector 22 and the second connector 32. It should be noted that if the first wiring channel 16 and the wire insertion channel 15 are set on the same wiring plane, and / or the second wiring channel 17 and the wire insertion channel 15 are set on the same wiring plane, the minimum included angle between the channels (the first wiring channel 16 and the wire insertion channel 15 / the second wiring channel 17 and the wire insertion channel 15) is 0 degrees. In this state, the first wiring channel 16 and the wire insertion channel 15 and / or the second wiring channel 17 and the wire insertion channel 15 are arranged side by side to form an approximate "U" shaped channel structure. When the channels are on wiring planes at different horizontal levels, the minimum included angle between the channels can be less than 0 degrees. In this state, the first wiring channel 16 and the wire insertion channel 15 and / or the second wiring channel 17 and the wire insertion channel 15 form a cross structure, and the connecting line extends from one of the channels, around the first abutment structure 13 or the second abutment structure 14, to another adjacent channel structure.

[0058] like Figure 1 , Figure 9 As shown, as an optional implementation, the first wire-stopping structure 13 includes a first winding post 131, which is a columnar structure. The first winding post 131 is spaced apart from the first wire passage 11. The first wire passage 11 to the first winding post 131 defines a first wiring channel 16. The outer peripheral surface of the first winding post 131 forms a first wire-stopping portion for providing wire abutment.

[0059] The first winding post 131 defines the relative positions of the first wiring channel 16 and the wire insertion channel 15, which are located on opposite sides of the first winding post 131. In this design, although the first winding post 131 and the first wire passage 11 are spaced apart, after the first connecting wire 20 passes through the first wire passage 11 into the first wiring channel 16, it cannot directly pass through the gap between the first winding post 131 and the first wire passage 11 into the wire insertion channel 15. It must extend along the direction of the first wiring channel 16 to the first winding post 131, and only after passing around the first winding post 131 can it enter the wire insertion channel 15. This allows the first winding post 131 to abut against the first wire body 21 when the first connecting wire 20 is subjected to a pulling force.

[0060] To prevent the first connecting wire 20 from directly entering the wire insertion channel 15 through the gap between the first wire passage 11 and the first winding post 131 without bypassing the first winding post 131, the first abutment structure 13 further includes a first partition 132. The first partition 132 is a plate-shaped structure. One end of the first partition 132 is connected to the first winding post 131, and the other end of the first partition 132 extends along the length of the first wiring channel 16 toward the first wire passage 11, thereby separating the wiring space into the wire insertion channel 15 and the first wiring channel 16. The surface portion of the first winding post 131 that is not connected to the first partition 132, that is, the side surface of the first winding post 131 away from the first partition 132, forms the first abutment portion. The first abutment portion provides the position for the first wire 21 to abut.

[0061] In this embodiment, the device body 10 includes a protective housing 18, i.e., the device body 10 adopts the above-described box structure. The protective housing 18 is a hollow structure, and the hollow part forms the above-described wiring space to provide a position for the connection wire arrangement. The first wire passage 11 and the second wire passage 12 are both opened in the protective housing 18. The first wire passage 11 and the wire insertion channel 15 are both located on the same side of the first winding post 131, thereby ensuring that the included angle between the first wiring channel 16 formed by the first wire passage 11 and the first winding post 131 and the wire insertion channel 15 is less than 90°. Specifically, in this embodiment, since the wiring space is divided by the first partition 132 to form the first wiring channel 16 and the wire insertion channel 15, the first wiring channel 16 and the wire insertion channel 15 are respectively formed on opposite sides of the first partition 132. That is to say, the included angle between the first wiring channel 16 and the wire insertion channel 15 is 0°. In essence, it is a two-channel structure arranged side by side.

[0062] Understandably, in order to optimize the wiring space on the device body 10 to the greatest extent, in this embodiment, the inner wall of the protective shell 18 cooperates with the first wire-blocking structure 13 to form the first wire passage 11 and the first wiring channel 16. The first channel plate 1831 and the first outer shell plate 1832 are respectively formed on opposite sides of the first wire passage 11. The first channel plate 1831 and the first outer shell plate 1832 are both part of the protective shell 18. The end of the first partition plate 132 away from the first winding post 131 is connected to the first outer shell plate 1832. The first channel plate 1831 and the first partition plate 132 are spaced apart to define the first wiring channel 16. The first wire passage 11 is formed between the end of the first channel plate 1831 and the first partition plate 132 and the first outer shell plate 1832.

[0063] like Figure 9 As shown, the protective housing 18 includes a top plate 181 and a bottom plate 182. The first abutment structure 13 is fixed to either the bottom plate 182 or the top plate 181. The bottom plate 182 and the top plate 181 are preferably two parallel flat plate structures. The first partition plate 132 is preferably arranged perpendicular to the top plate 181 and the bottom plate 182. A plurality of side plates 183 are arranged around the outer edges of the top plate 181 and the bottom plate 182, and the side plates 183 include the aforementioned first channel plate 1831 and first outer shell plate 1832.

[0064] like Figure 1 , Figure 9 As shown, as another optional embodiment, the second wire-stopping structure 14 includes a second winding post 141. The second winding post 141 is a columnar structure. The second winding post 141 is spaced apart from the second wire passage 12. The second wire passage 12 to the second winding post 141 defines a second wiring channel 17. The outer peripheral surface of the second winding post 141 forms a second wire-stopping portion for providing wire abutment.

[0065] The second winding post 141 defines the relative positions of the second wiring channel 17 and the wire insertion channel 15, which are located on opposite sides of the second winding post 141. In this design, although the second winding post 141 and the second wire passage 12 are spaced apart, after the second connecting wire 30 passes through the second wire passage 12 into the second wiring channel 17, it cannot directly pass through the gap between the second winding post 141 and the second wire passage 12 into the wire insertion channel 15. It must extend along the direction of the second wiring channel 17 to the second winding post 141, and only after passing around the second winding post 141 can it enter the wire insertion channel 15. This allows the second winding post 141 to abut against the second wire body 31 when the second connecting wire 30 is subjected to a pull-out force.

[0066] To prevent the second connecting wire 30 from directly entering the wire insertion channel 15 through the gap between the second wire passage 12 and the second winding post 141 without bypassing the second winding post 141, the second abutment structure 14 further includes a second partition 142. The second partition 142 is a plate-shaped structure. One end of the second partition 142 is connected to the second winding post 141, and the other end of the second partition 142 extends along the length of the second wiring channel 17 toward the second wire passage 12, thereby separating the wiring space into the wire insertion channel 15 and the second wiring channel 17. The surface portion of the second winding post 141 that is not connected to the second partition 142, that is, the side surface of the second winding post 141 away from the second partition 142, forms a second abutment portion, which provides the position for the second wire 31 to abut.

[0067] In this embodiment, the device body 10 includes a protective housing 18, i.e., the device body 10 adopts the above-described box structure. The protective housing 18 is a hollow structure, and the hollow part forms the wiring space to provide a position for the connection wire arrangement. The first wire passage 11 and the second wire passage 12 are both opened in the protective housing 18. The second wire passage 12 and the wire insertion channel 15 are both located on the same side of the second winding post 141, thereby ensuring that the included angle between the second wiring channel 17 formed by the second wire passage 12 and the second winding post 141 and the wire insertion channel 15 is less than 90°. Specifically, in this embodiment, the wiring space is divided by the second partition 142 to form the second wiring channel 17 and the wire insertion channel. 15. Therefore, the second wiring channel 17 and the wire insertion channel 15 are respectively formed on opposite sides of the second partition 142. That is to say, the included angle between the second wiring channel 17 and the wire insertion channel 15 is 0°. In essence, it is a structure of two channels arranged side by side for two households. In this way, when the first wiring channel 16 and the second wiring channel 17 are both set up in the above manner, the first wiring channel 16, the wire insertion channel 15 and the second wiring channel 17 will roughly form a "Z" shape structure. However, the included angle between the first wiring channel 16 and the wire insertion channel 15, and the included angle between the second wiring channel 17 and the wire insertion channel 15 are smaller than the included angle between any two adjacent strokes in the "Z".

[0068] Understandably, in order to optimize the wiring space on the device body 10 to the greatest extent, in this embodiment, the inner wall of the protective housing 18 cooperates with the second anti-wire structure 14 to form the second wire passage 12 and the second wiring channel 17. The second channel plate 1833 and the second outer shell plate 1834 are respectively formed on opposite sides of the second wire passage 12. The second channel plate 1833 and the second outer shell plate 1834 are both part of the protective housing 18. The end of the second partition plate 142 away from the second winding post 141 is connected to the second outer shell plate 1834. The second channel plate 1833 and the second partition plate 142 are spaced apart to define the second wiring channel 17. The end of the second channel plate 1833 forms the second wire passage 12 between the second partition plate 142 and the second outer shell plate 1834.

[0069] like Figure 9 As shown, the protective housing 18 includes a top plate 181 and a bottom plate 182. The first abutment structure 13 is fixed to either the bottom plate 182 or the top plate 181. The bottom plate 182 and the top plate 181 are preferably two parallel flat plate structures. The first partition plate 132 is preferably arranged perpendicular to the top plate 181 and the bottom plate 182. A plurality of side plates 183 are arranged around the outer edges of the top plate 181 and the bottom plate 182, and the side plates 183 include the aforementioned first channel plate 1831 and first outer shell plate 1832.

[0070] To further explain, the protective housing 18 includes a top plate 181 and a bottom plate 182. The second abutment structure 14 is fixed to either the bottom plate 182 or the top plate 181. The bottom plate 182 and the top plate 181 are preferably two parallel flat plate structures. The second partition plate 142 is preferably arranged perpendicular to the top plate 181 and the bottom plate 182. A plurality of side plates 183 are arranged around the outer edges of the top plate 181 and the bottom plate 182, and the side plates 183 include the aforementioned second channel plate 1833 and second outer shell plate 1834.

[0071] It is understood that either of the two implementation methods described above can be used, or they can be used in combination. When the two implementation methods are used in combination, such as... Figures 5-8As shown, when the first connecting line 20 and the second connecting line 30 are simultaneously subjected to a pull-out force F1, the portion of the first wire 21 located between the first wiring channel 16 and the wire insertion channel 15 will abut against the first winding post 131, thereby acting on the surface of the first winding post 131 and applying a force F2 to the first winding post 131. The portion of the first wire 21 located between the first wiring channel 16 and the wire insertion channel 15 will abut against the first winding post 131, thereby acting on the surface of the second winding post 141 and applying a force F3 to the second winding post 141. This reduces the force F4 exerted by the first wire 21 on the first connector 22 and reduces the force F5 exerted by the second wire 31 on the second connector 32. When the forces F4 and F5 are less than the force that causes the first connector 22 and the second connector 32 to separate in the pull-out direction, the connection between the first connector 22 and the second connector 32 can be kept stable, thus solving the technical problem mentioned in the background art.

[0072] It is understandable that, in the above embodiments, in order to effectively protect the first wire 21 and the second wire 31 and prevent the first wire 21 and the second wire 31 from being cut and damaged by the winding post due to the excessive force F2 and F3 acting on the first winding post 131 and the second winding post 141, this embodiment sets the cross-sectional shape of the first winding post 131 and the second winding post 141 to be circular. The circular cross-sectional shape of the first winding post 131 and the second winding post 141 can effectively increase the force-bearing area between the first winding post 131 and the first wire 21, and increase the force-bearing area between the second winding post 141 and the second wire 31, reduce the pressure between them, effectively improve the force transmission efficiency, and protect the wire sheath on the surface of the wire from being damaged by the winding post.

[0073] Furthermore, the winding post structure and wiring channel structure do not have to be specified as two. By using more winding posts and wiring channels, the connecting wire can have more bends in the wiring space, further reducing the force on the connector.

[0074] To further explain, such as Figure 9As shown, in this embodiment, a first wiring channel 16 is formed between the first channel plate 1831 and the first partition plate 132, a second wiring channel 17 is formed between the second channel plate 1833 and the second partition plate 142, and a wire insertion channel 15 is formed between the first partition plate 132 and the second partition plate 142. In this embodiment, the first abutment structure 13, the second abutment structure 14, and the aforementioned side plate 183 are all disposed on the bottom plate 182 of the protective housing 18, thereby allowing the aforementioned components to be combined to form the aforementioned box body, and the top plate 181 of the protective housing 18 serves as the aforementioned box cover, and is connected to the box body by a detachable installation method. When the top plate 181 is detached, an open structure for arranging connecting wires, such as within the wiring space, can be provided.

[0075] like Figures 2-7 As shown, the smart blackboard provided in this embodiment includes the above-mentioned wiring connection components. The main screen and the sub-screen 40 are electrically connected by a first connecting line 20 and a second connecting line 30. The number of sub-screens 40 is at least one, but in this embodiment, two sub-screens are set. Correspondingly, two fixed blackboards 60 are also set. The two fixed blackboards 60 and the two sub-screens 40 are placed on the left and right sides of the main screen and installed by means of the above-mentioned wall-mounted bracket 50 using the corresponding connection method.

[0076] like Figure 3 , Figure 10 As shown, the main screen is electrically connected to one end of the first line 21, and a first connector 22 is provided at the end of the first line 21 away from the main screen. The sub-screen 40 is electrically connected to one end of the second line 31, and a second connector 32 is provided at the end of the second line 31 away from the sub-screen 40. It can be understood that when there is only one sub-screen 40, the main screen and the sub-screen 40 can be directly connected via the first connecting line 20 and the second connecting line 30. However, when there are two or more sub-screens 40, an expansion circuit board 70 is provided between the main screen and the sub-screens 40. The expansion circuit board 70 can be located inside the main screen or externally placed outside the main screen and electrically connected to the control unit of the main screen via wires. Multiple first connecting lines 20 corresponding to the sub-screens 40 extend from the expansion circuit board 70, and each first connecting line 20 is electrically connected to the expansion circuit board 70, thereby connecting to each second connecting line 30.

[0077] The aforementioned wiring protection device is installed between the main screen and the sub-screen 40, so that the first connecting line 20 and the second connecting line 30 can be partially inserted into the wiring space formed within the device body 10 for connection.

[0078] In this embodiment, the device body 10 is fixedly connected to the main screen or the sub-screen 40.

[0079] like Figure 4 , Figure 7As shown, in one embodiment, the device body 10 is fixedly connected to the sub-screen 40. Specifically, the device body 10 is located on the rear side of the sub-screen 40. During the movement of the sub-screen 40 relative to the main screen, the device body 10 moves together with the sub-screen 40, thereby being blocked by the sub-screen 40 on the front side of the device body 10, so that the user can not see the device body 10 while using the smart blackboard, thus improving the overall aesthetics of the smart blackboard.

[0080] In the above embodiment, since the device body 10 and the sub-screen 40 are relatively fixed, the two ends of the second connecting line 30 are respectively connected to the sub-screen 40 and placed in the wiring space. Therefore, the second connecting line 30 as a whole will also move together with the sub-screen 40. Conversely, the end of the first connecting line 20 used to be placed in the wiring space moves along with the sub-screen 40. In order to prevent the first connecting line 20 from falling into the sliding structure 52 and causing damage to the first line 21 or affecting the movement of the sub-screen 40, a guide rod 53 is provided in the wall bracket 50 along the sliding direction of the sub-screen 40. The first line 21 is wound around the periphery of the guide rod 53 along the extension direction of the guide rod 53. As the secondary screen 40 moves towards or away from the main screen, the first wire 21 remains suspended on the guide rod 53. This prevents the first wire 21 from falling due to gravity when the distance between the secondary screen 40 and the main screen is small, thus avoiding it from being exposed on the underside of the smart blackboard or directly resting on the sliding component. The length of the first wire 21 must be greater than the maximum moving distance of the secondary screen 40 from its position near the main screen to its position away from the main screen. This ensures that when the secondary screen 40 is at its extreme position away from the main screen, the first connecting wire 20 can still maintain its connection with the second connecting wire 30 without being excessively pulled, thus guaranteeing the reliability of the wiring and the overall aesthetics of the smart blackboard.

[0081] Furthermore, to improve the compactness of the smart blackboard structure, a sliding support 41 is provided between the device body 10 and the sub-screen 40. The opposite sides of the sliding support 41 are fixedly connected to the sub-screen 40 and the device body 10, respectively, providing an installation position for the device body 10. The sliding support 41 is slidably connected to the wall-mounted bracket 50 via a sliding structure 52. Following the above description of the sliding structure 52, in this embodiment, the sub-screen 40 has two or more sliding support 41s on its upper and lower sides. Roller assemblies are provided on the sliding support 41 to slide and match with the slide rails 521 in the wall-mounted beams 51 on the upper and lower sides. The device body 10 is selectively installed on the rear side of one of the sliding support 41 according to the wiring positions of the second connecting line 30 and the first connecting line 20, thereby fixing the protective shell 18 and allowing it to move with the sub-screen 40.

[0082] like Figures 5-6As shown, in order to facilitate the wiring between the main screen and the sub-screen 40, taking the device body 10 in the figure as an example, which is set on the sliding support 41 located on the lower side of the smart blackboard, an inspection port 511 is opened on the wall-mounted beam 51 located on the lower side of the smart blackboard, corresponding to the position of the device body 10. When the sub-screen 40 moves to the corresponding position, the device body 10 will be exposed from the inspection port 511, so that the user can connect or disconnect the first connecting line 20 and the second connecting line 30 after disassembling the device body 10.

[0083] To further improve the stability of the device body 10 during the movement of the sub-screen 40 and prevent vibration of the device body 10 due to unevenness of the sliding structure 52, the device body 10 is also equipped with a hanging member 19. The hanging member 19 has a hanging part 191. It can be understood that the front side of the device body 10 is fixedly connected to the sliding support member 41, and the hanging member 19 is set on the rear side of the device body 10. The hanging part 191 formed on the hanging member 19 is set along the sliding direction of the sub-screen 40 and slides with the guide rod 53, so that the opposite sides of the device body 10 are supported by the sliding support member 41 and the guide rod 53 respectively. At the same time, this arrangement can also prevent the guide rod 53 from vibrating during the movement of the sub-screen 40. The hanging part 191 overlaps the guide rod 53, so that the middle part of the guide rod 53 is stabilized by the device body 10, ensuring the stability of the first connecting line 20 during the stretching and contraction process.

[0084] In another embodiment, the device body 10 is fixedly connected to the main screen body. The device body 10 is fixed relative to the wall-mounted bracket 50 along with the main screen body. In addition, the device body 10 can also be placed between the wall-mounted bracket 50 and the main screen body, so as to be covered by the main screen body, so that the user can not see the device body 10 during the use of the smart blackboard, thereby improving the overall aesthetics of the smart blackboard.

[0085] In this embodiment, one end of the second connecting line 30 moves with the movement of the sub-screen body 40, and the other end of the second connecting line 30 is fixed relative to the bracket body. Therefore, the guide rod 53 provided by the wall bracket 50 along the sliding direction of the sub-screen body 40 is provided for the second line 31 to be wound, so that the second line 31 is kept hanging on the guide rod 53, achieving the same effect as described above.

[0086] In summary, by implementing this method, the connection stability between the main screen and the sub-screen 40 during relative movement can be guaranteed, preventing the connection cable from being pulled off the connection or even damaged when the screen moves. This effectively extends the service life of the entire device while improving the user experience.

[0087] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0088] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0090] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A wiring protection device, characterized in that, The wiring protection device, applied to a combined touchscreen, includes: The device body (10) defines a wiring space. The device body (10) is provided with a first wire passage (11) and a second wire passage (12) at intervals. Both the first wire passage (11) and the second wire passage (12) provide space for wires to pass through. The first wire-blocking structure (13) is disposed on the side of the wiring space near the first wire-passing port (11); The second wire-stopping structure (14) is disposed on the side of the wiring space near the second wire-passing port (12), and the first wire-stopping structure (13) and the second wire-stopping structure (14) are spaced apart to form a wire insertion channel (15); The first wire passage (11) is connected to the end of the wire insertion channel (15) near the first wire support structure (13) to form a first wiring channel (16), and the first wiring channel (16) and the wire insertion channel (15) are arranged at an angle; The second wire passage (12) is connected to the end of the wire insertion channel (15) near the second wire support structure (14) to form a second wiring channel (17), and the second wiring channel (17) and the wire insertion channel (15) are arranged at an angle.

2. The wiring protection device according to claim 1, characterized in that, The angle between the first wiring channel (16) and the wire insertion channel (15) is less than or equal to 90°; The angle between the second wiring channel (17) and the wire insertion channel (15) is less than or equal to 90°.

3. The wiring protection device according to claim 1, characterized in that, The first line-blocking structure (13) includes: The first winding post (131) is spaced apart from the first wire passage (11), and the first wire passage (11) to the first winding post (131) defines the first wiring channel (16). The outer peripheral surface of the first winding post (131) forms a first abutment portion for providing wire abutment.

4. The wiring protection device according to claim 3, characterized in that, The first line-blocking structure (13) also includes: The first partition (132) is connected at one end to the first winding post (131) and divides the wiring space into the wire insertion channel (15) and the first wiring channel (16); The first abutment portion is formed on the side surface of the first winding post (131) away from the first partition (132).

5. The wiring protection device according to claim 4, characterized in that, The device body (10) includes: The protective housing (18) has a hollow interior forming the wiring space. The first wire passage (11) and the second wire passage (12) are both opened in the protective housing (18). The first wire passage (11) and the wire insertion channel (15) are both located on the same side of the first winding post (131). The protective housing (18) is located on opposite sides of the first wire passage (11) and forms a first channel plate (1831) and a first outer shell plate (1832) respectively, which are staggered. The end of the first partition plate (132) away from the first winding post (131) is connected to the first outer shell plate (1832). The first channel plate (1831) and the first partition plate (132) are spaced apart to define the first wiring channel (16) in which they are located.

6. The wiring protection device according to claim 1, characterized in that, The second line-blocking structure (14) includes: The second winding post (141) is spaced apart from the second wire passage (12). The second wire passage (12) to the second winding post (141) defines the second wiring channel (17). The outer peripheral surface of the second winding post (141) forms a second abutment portion for providing wire abutment.

7. The wiring protection device according to claim 6, characterized in that, The second line-blocking structure (14) also includes: The second partition (142) is connected at one end to the second winding post (141) and divides the wiring space into the wire insertion channel (15) and the second wiring channel (17); The second abutment portion is formed on the side surface of the second winding post (141) away from the second partition (142).

8. The wiring protection device according to claim 7, characterized in that, The device body (10) includes: The protective housing (18) has a hollow interior forming the wiring space. The first wire passage (11) and the second wire passage (12) are both opened in the protective housing (18). The second wire passage (12) and the wire insertion channel (15) are both located on the same side of the second winding post (141). The protective housing (18) is located on opposite sides of the second cable outlet (12) and forms a second channel plate (1833) and a second outer shell plate (1834) respectively. The end of the second partition plate (142) away from the second winding post (141) is connected to the second outer shell plate (1834). The second channel plate (1833) and the second partition plate (142) are spaced apart to define the second wiring channel (17) in which they are located.

9. A line connection component, characterized in that, include: Wiring protection device as described in any one of claims 1-8; The first connecting line (20) includes a first wire body (21) and a first connector (22). The first connector (22) is placed in the wire insertion channel (15). The first wire body (21) is connected to the first connector (22) along the first wiring channel (16) around the first abutment structure (13). The second connecting line (30) includes a second wire body (31) and a second connector (32). The second connector (32) is placed in the wire insertion channel (15). The second wire body (31) is connected to the second connector (32) along the second wiring channel (17) around the second abutment structure (14). The first connector (22) is connected to the second connector (32) along the insertion direction.

10. The line connection assembly according to claim 9, characterized in that, The device body (10) includes: The protective housing (18) has a hollow interior forming the wiring space, and the first wire passage (11) and the second wire passage (12) are both opened in the protective housing (18); The inner wall of the protective housing (18) acts on the first wire (21) or the first connector (22) to prevent the first connecting wire (20) from coming out of the wiring space; The inner wall of the protective housing (18) acts on the second wire (31) or the second connector (32) to prevent the second connecting wire (30) from coming out of the wiring space.

11. A smart blackboard, characterized in that, include: The line connection assembly as described in claim 9 or 10; The main screen body is electrically connected to the first line body (21); At least one sub-screen (40) is electrically connected to the second line body (31), and the sub-screen (40) and the main screen are movable relative to each other; The wiring protection device is located between the main screen and the sub-screen (40).

12. The smart blackboard according to claim 11, characterized in that, The device body (10) is fixedly connected to the main screen or the sub-screen (40).

13. The smart blackboard according to claim 11, characterized in that, Also includes: Wall mount bracket (50) provides a support surface for installation; The main screen is fixedly installed on the wall-mounted bracket (50); The sub-screen (40) and the wall-mounted bracket (50) are slidably connected by a sliding structure (52).

14. The smart blackboard according to claim 13, characterized in that, The main body (10) of the device is fixedly connected to the sub-screen body (40); The wall mount bracket (50) has a lead rod (53) that is slidably arranged along the sub-screen body (40), and the first wire (21) is wound around the periphery of the lead rod (53) along the extension direction of the lead rod (53).

15. The smart blackboard according to claim 14, characterized in that, A sliding support (41) is provided between the device body (10) and the sub-screen body (40), and the opposite sides of the sliding support (41) are fixedly connected to the sub-screen body (40) and the device body (10) respectively. The sliding support (41) and the wall-mounted bracket (50) are slidably connected by the sliding structure (52).

16. The smart blackboard according to claim 14, characterized in that, The device body (10) is also provided with a hanging component (19), and the hanging component (19) is provided with a hanging part (191); The hanging part (191) is arranged along the sliding direction of the sub-screen body (40) and slides in cooperation with the lead rod (53).

17. The smart blackboard according to claim 13, characterized in that, The device body (10) is fixedly connected to the main screen body; The wall mount bracket (50) has a lead rod (53) that is slidably arranged along the sub-screen body (40), and the second wire (31) is wound around the periphery of the lead rod (53) along the extension direction of the lead rod (53).

Images