Writing board structure and intelligent blackboard

Abstract

The embodiment of the utility model discloses a writing board structure and an intelligent blackboard. The writing board structure comprises a writing board, a fixing frame, a supporting plate and a locking piece. The writing board comprises a panel, a connecting plate and a back plate, a first accommodating cavity is formed among the first area, the connecting plate and the back plate of the writing board, and a second accommodating cavity is formed among one side, deviating from the connecting plate, of the back plate and the second area of the writing board; the fixing frame is located in the first containing cavity. The supporting plate is located in the second containing cavity, is independent relative to the fixing frame and is connected with the second area. The locking piece is located on the side, away from the panel, of the back plate and connected with the back plate and the fixing frame. The writing board comprises the panel, the connecting plate and the back plate, an edge sealing frame is omitted, and the cost and the weight of the writing board structure are reduced. The supporting plate is designed to be independent relative to the fixing frame, so that when the fixing frame, the supporting plate and the writing board are assembled, the supporting plate and the writing board can be assembled respectively, different parts of the panel are supported, and it is guaranteed that the writing board is not prone to collapse during writing.

Description

Technical Field

[0001] The present application relates to the technical field of blackboard equipment, and in particular to a writing board structure and a smart blackboard. Background Art

[0002] See Figure 1 In related art, a writing board structure 1' typically includes a honeycomb core 3', a metal plate 2' wrapped around one side of the honeycomb core 3', a metal plate 4' wrapped around the other side of the honeycomb core 3', an edge band 5' located on the side, and screws 6' connecting the edge band 5' and the metal plate 4'. The edge band 5' is typically made of aluminum profiles or rolled sheet metal, formed into a U-shape with a specific cross-section. The U-shape is then fitted over the side of the writing board structure 1', and the edge band 5' is then secured to the metal plate 4' using screws 6'.

[0003] However, the edge sealing frame 5' made of aluminum profile or sheet metal roll-bundled material has the problem of being heavy due to the material. Utility Model Content

[0004] The embodiments of the present application provide a writing board structure and a smart blackboard, which are used to improve the problem of heavy weight of the edge-sealed frame using aluminum profiles or sheet metal roll-bound materials in related technologies due to material reasons.

[0005] In a first aspect, an embodiment of the present application provides a writing board structure, comprising:

[0006] A writing board comprising an integrally formed front panel, a connecting plate, and a back panel, the front panel having a writing surface and a back panel facing each other, the connecting plate connecting the front panel and extending toward the back panel away from the writing surface; the back panel opposing the front panel and spaced apart, the back panel connected to an end of the connecting plate away from the front panel and extending toward the center of the writing board; the back panel comprising a first region corresponding to the back panel and a second region connected to the first region, a first receiving cavity being formed between the first region, the connecting plate, and the back panel, and a second receiving cavity being formed between the side of the back panel away from the connecting plate and the second region;

[0007] A fixing frame, located in the first accommodating cavity;

[0008] A support plate is located in the second accommodating cavity, the support plate is independent of the fixing frame, and the support plate is connected to the second area;

[0009] The locking piece is located on the side of the back plate facing away from the panel, and the locking piece connects the back plate and the fixing frame.

[0010] The writing board structure of the present application embodiment directly comprises a front panel, a connecting plate, and a back panel. The front panel is used for writing, and the back panel is used for connection to the locking member. This eliminates the need for edge banding, thereby reducing the cost and weight of the writing board structure. This also improves the environmentally unfriendly process of edge banding, which requires anodizing when using aluminum profiles, and spraying or baking varnish when using sheet metal roll-bonded frame materials.

[0011] The support plate is designed to be independent of the fixing frame, so that when the fixing frame, the support plate and the writing board are assembled, they can be assembled with the writing board separately. For example, the fixing frame is first assembled to the first accommodating cavity of the writing board, and then the support plate is assembled to the second accommodating cavity of the writing board. This allows the assembly of the fixing frame, the support plate and the writing board to be carried out smoothly, and the fixing frame and the support plate support different parts of the panel, ensuring that the writing board is not easy to collapse when writing.

[0012] In some embodiments, the first accommodating cavity forms a first opening on the opposite side of the connecting plate, and the fixing frame is placed in the first accommodating cavity through the first opening.

[0013] Based on the above embodiment, the fixing frame is connected to the writing board after the structure of the writing board is formed in place, so as to support and maintain the structure of the writing board.

[0014] In some embodiments, the second accommodating cavity forms a second opening on the opposite side of the second region, and the support plate is placed in the second accommodating cavity through the second opening.

[0015] Based on the above embodiment, the support plate, the fixing frame and the writing board can be assembled separately, which makes the assembly more convenient.

[0016] In some embodiments, the fixing frame is a hollow structure.

[0017] Based on the above embodiments, the weight and manufacturing cost of the fixing frame can be reduced.

[0018] In some embodiments, the mounting bracket includes:

[0019] A plurality of fixing plates are connected end to end in sequence to form a ring-shaped hollow structure, and the face plate, the connecting plate and the back plate are respectively fitted with a fixing plate.

[0020] Based on the above embodiment, the weight of the fixing frame can be reduced while the contact area between the fixing frame and the writing board is increased, thereby improving the supporting effect of the fixing frame on the writing board.

[0021] In some embodiments, the locking member extends into the hollow area of ​​the fixing frame.

[0022] Based on the above embodiment, a sufficient engagement surface is ensured between the locking member and the fixing frame, thereby improving the stability of the locking member in connecting the writing board and the fixing frame.

[0023] In some embodiments, the connecting plate extends along an edge of the panel, and the back plate extends along an extending direction of the connecting plate.

[0024] Based on the above embodiment, the fixing frame located in the first accommodating cavity between the connecting plate, the back plate and the first area of ​​the front plate can support the edge of the writing board to ensure that the edge of the writing board is not prone to collapse.

[0025] In some embodiments, the writing board structure includes a plurality of fixing brackets spaced apart along an edge of the panel and a locking member connecting each fixing bracket.

[0026] Based on the above embodiment, the material and manufacturing costs of the fixing frame are saved.

[0027] In some embodiments, further comprising:

[0028] The locking member is located on the side of the back plate away from the panel. The locking member includes a locking plate. The locking plate abuts against the back plate and the support plate. The locking member is also connected to the locking plate.

[0029] Based on the above embodiments, the design of the locking member connecting the locking plate, the writing board and the fixing frame can increase the engagement surface of the locking member during connection, increase the number of engagement thread turns of the locking member, and enhance the connection stability of the locking member.

[0030] In some embodiments, the locking component includes one or more of a splicing component and a shielding component.

[0031] Based on the above embodiment, the splicing parts and shielding parts on the writing board structure are used as locking parts to increase the engaging surface of the locking part during connection, increase the number of engaging thread turns of the locking part, and enhance the connection stability of the locking part.

[0032] In some embodiments, the edge of the panel includes two opposite first side edges and two opposite second side edges, and the two first side edges are located between the two second side edges;

[0033] The writing board includes a connecting plate connecting the two first side edges and at least one of the two second side edges and a back plate correspondingly connected to the connecting plate.

[0034] Based on the above embodiments, whether the first side edge and the second side edge are connected to the connecting plate and the back plate can be designed in combination with actual needs.

[0035] In some embodiments, the writing board includes a plurality of connecting plates, the plurality of connecting plates including two first connecting plates, the two first connecting plates respectively connecting the two first side edges and extending along the corresponding first side edges;

[0036] The writing board includes a plurality of back panels, the plurality of back panels include two first back panels, the two first back panels are respectively connected to the two first connecting panels and extend along corresponding first side edges;

[0037] The writing board structure includes a fixing frame arranged corresponding to each first side edge and a locking member connected to each fixing frame.

[0038] Based on the above embodiment, fixing brackets and locking members are provided at two opposing first side edges of the panel, thereby providing support for the writing tablet at the two first side edges. This reduces material costs and the manufacturing cost of the writing tablet structure compared to installing fixing brackets around the entire perimeter of the writing tablet. Furthermore, since the edges of the writing tablet are generally not used for writing, even if the writing tablet is not supported by fixing brackets at the two second side edges, it is not subject to pressure and is less likely to collapse.

[0039] In some embodiments, further comprising:

[0040] a splicing piece located on a side of one of the first back plates facing away from the panel, the splicing piece including a locking plate abutting against one of the first back plates and the support plate, a plurality of locking pieces including a first locking piece further connected to the locking plate;

[0041] The shielding member is located on the side of the other first back plate away from the panel. The shielding member includes a locking plate that abuts the other first back plate and the support plate. The multiple locking members include a second locking member that is also connected to the locking plate.

[0042] Based on the above embodiments, the splicing piece can be used to splice the writing board structure with other writing board structures or smart board structures, and the shielding piece can be used to shield the side of the writing board structure.

[0043] In some embodiments, the writing board includes a plurality of connecting plates, the plurality of connecting plates including a first connecting plate and two second connecting plates, the first connecting plate being connected to a first side edge and extending along the first side edge, and the two second connecting plates being respectively connected to two second side edges and extending along the corresponding second side edges;

[0044] The writing board includes a plurality of back panels, the plurality of back panels including a first back panel and two second back panels, the first back panel being connected to the first connecting panel and extending along the first side edge, and the two second back panels being respectively connected to the two second connecting panels and extending along the corresponding second side edges;

[0045] The first connecting plate and the two second connecting plates are spaced apart, as are the first back plate and the two second back plates. The writing board is provided with notches on both sides of the first connecting plate.

[0046] The writing board structure also includes two corner pieces, which are respectively located at the notch and connected to the writing board. Each corner piece is smoothly connected to the first connecting plate and the second connecting plate.

[0047] Based on the above embodiments, when the writing board structure is spliced ​​with other writing board structures or smart board structures, the splicing parts and the shielding parts are respectively arranged at the two opposite first side edges of the writing board structure. One side of the first side edge corresponding to the shielding part will be located on the outside of the combined blackboard, that is, the other first back panel will be located on the outside of the combined blackboard. Therefore, the design of setting notches and corner parts at the opposite ends of the other first back panel can avoid the outside of the combined blackboard having no sharp corners, avoiding scratches and other problems.

[0048] In some embodiments, the corner piece includes:

[0049] A corner is located at the gap and fills the gap, and the corner is smoothly connected with the first connecting plate and the second connecting plate;

[0050] The plug-in block is connected to the corner and is inserted into the first accommodating cavity.

[0051] Based on the above embodiment, the corner piece is connected to the writing board by plugging, which is convenient for assembly and disassembly.

[0052] In some embodiments, the support plate is adhesively connected to the second area of ​​the writing tablet.

[0053] Based on the above embodiment, the adhesive can be spread all over the surface of the support plate facing the second area and / or the second area to ensure tight fit between the support plate and various parts of the second area and avoid bulging and other phenomena.

[0054] In some embodiments, the fixing frame includes a plastic member.

[0055] Based on the above embodiments, the plastic parts are low-cost and easy to manufacture.

[0056] In some embodiments, the writing tablet comprises a steel plate.

[0057] Based on the above embodiments, the steel plate has the advantages of being easy to bend and form and having low cost.

[0058] In some embodiments, the thickness of the writing tablet is greater than or equal to 0.3 mm and less than or equal to 0.4 mm.

[0059] Based on the above embodiments, by reasonably designing the thickness of the writing board, the weight of the writing board structure can be reduced, and the bending and forming of the writing board can be facilitated.

[0060] In some embodiments, the support plate comprises a composite plate.

[0061] Based on the above embodiments, the composite panel is composed of different materials. Compared with the honeycomb core in the related art, the composite panel has higher structural strength and does not require double-sided metal plates, which is beneficial to saving materials and reducing costs.

[0062] In a second aspect, an embodiment of the present application provides a smart blackboard, comprising:

[0063] The above-mentioned writing board structure;

[0064] The smart board structure is spliced ​​with the writing board structure.

[0065] The smart blackboard of the embodiment of the present application integrates the performance of a traditional writing blackboard and a touch blackboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0067] Figure 1 It is a schematic cross-sectional structure diagram of a writing board in the related art;

[0068] Figure 2 is a partial exploded perspective view of a writing board structure according to some embodiments of the present application;

[0069] Figure 3 yes Figure 2 A partial cross-sectional schematic diagram of the writing board structure shown;

[0070] Figure 4 yes Figure 2 A partial cross-sectional exploded schematic diagram of the writing board structure is shown;

[0071] Figure 5 yes Figure 2 A schematic structural diagram of a writing board in the writing board structure shown;

[0072] Figure 6 yes Figure 2 A schematic diagram of a partial structure of a writing board structure is shown;

[0073] Figure 7 yes Figure 2 A schematic diagram of a partial explosion structure of the writing board structure is shown;

[0074] Figure 8 is a partial exploded perspective view of a writing board structure according to some other embodiments of the present application;

[0075] Figure 9 yes Figure 8 A partial cross-sectional schematic diagram of a portion of the writing board structure is shown;

[0076] Figure 10 yes Figure 8 A partial cross-sectional schematic diagram of another portion of the writing board structure is shown;

[0077] Figure 11 This is a structural diagram of the smart blackboard provided in some embodiments of the present application.

[0078] Description of reference numerals:

[0079] 1', writing board structure; 2', metal plate; 3', honeycomb core; 4', metal plate; 5', edge banding frame; 6', screws;

[0080] 1. Writing board structure; 2. Smart blackboard; 3. Smart board structure;

[0081] 10. Writing board; 11. Panel; 111. Writing surface; 112. Back surface; 1121. First area; 1122. Second area; 113. First side edge; 114. Second side edge; 12. Connecting plate; 12a. First connecting plate; 12b. Second connecting plate; 13. Back plate; 13a. First back plate; 13b. Second back plate; 14. Notch; 101. First accommodating cavity; 1011. First opening; 102. Second accommodating cavity; 1021. Second opening;

[0082] 20. Fixing frame; 21. Fixing plate;

[0083] 30. Support plate;

[0084] 40, locking member; 40a, first locking member; 40b, second locking member;

[0085] 50, locking member; 50a, splicing member; 50b, shielding member; 51, locking plate; 51a, locking plate; 51b, locking plate;

[0086] 60. Corner piece; 61. Corner; 62. Connecting block; 63. Step groove. DETAILED DESCRIPTION

[0087] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0088] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0089] See Figure 1 In related art, a writing board structure 1' typically includes a honeycomb core 3', a metal plate 2' wrapped around one side of the honeycomb core 3', a metal plate 4' wrapped around the other side of the honeycomb core 3', an edge band 5' located on the side, and screws 6' connecting the edge band 5' and the metal plate 4'. The edge band 5' is typically made of aluminum profiles or rolled sheet metal, formed into a U-shape with a specific cross-section. The U-shape is then fitted over the side of the writing board structure 1', and the edge band 5' is then secured to the metal plate 4' using screws 6'.

[0090] However, the edge sealing frame 5' made of aluminum profile or sheet metal roll-bundled material has the problem of being heavy due to the material.

[0091] Based on this, the present invention provides a writing board structure that directly includes a front panel, a connecting plate, and a back panel. The front panel is used for writing, and the back panel is used for connection to the locking member. This eliminates the need for edge banding, thereby reducing the cost and weight of the writing board structure. This also improves the environmentally unfriendly process of edge banding, which requires anodizing when using aluminum profiles, and spraying or baking varnish when using sheet metal roll-bonded frame materials.

[0092] See also Figures 2 to 4 , which respectively show a partial three-dimensional exploded schematic diagram, a partial cross-sectional schematic diagram and a partial cross-sectional exploded schematic diagram of the writing board structure of some embodiments of the present application, combined with Figures 2 to 4 The writing board structure 1 includes a writing board 10 , a fixing frame 20 , a supporting plate 30 and a locking member 40 .

[0093] The writing tablet 10 includes a front panel 11, a connecting plate 12, and a back panel 13. The front panel 11 has a writing surface 111 and a back panel 112 facing each other. The connecting plate 12 connects to the edge of the front panel 11 and extends toward the back panel 112, away from the writing surface 111. The back panel 13 is spaced apart from the front panel 11 and connects to the end of the connecting plate 12 away from the front panel 11, extending toward the center of the writing tablet 10. The back panel 112 includes a first area 1121 corresponding to the back panel 13 and a second area 1122 connected to the first area 1121. The writing tablet 10 forms a first receiving cavity 101 between the first area 1121, the connecting plate 12, and the back panel 13. The writing tablet 10 forms a second receiving cavity 102 between the side of the back panel 13 facing away from the connecting plate 12 and the second area 1122. The back panel 112 corresponds to the first area 1121 of the back panel 13, which can be the area corresponding to the projection of the back panel 13 on the back panel 112.

[0094] The fixing frame 20 is located in the first accommodating cavity 101. The support plate 30 is located in the second accommodating cavity 102. The support plate 30 is independent of the fixing frame 20 and is connected to the second area 1122 of the writing tablet 10. The locking member 40 is located on the side of the back panel 13 facing away from the front panel 11, connecting the back panel 13 and the fixing frame 20.

[0095] In the embodiment of the present application, a directly designed writing board 10 includes a front panel 11, a connecting plate 12, and a back panel 13. The front panel 11 is used for writing, and the back panel 13 is used for connection to the locking member 40. This allows for the omission of edge banding, thereby reducing the cost and weight of the writing board structure 1. This also improves the environmentally unfriendly issues of edge banding in related technologies, such as the need for anodizing when using aluminum profiles, and the need for spray painting or baking varnish when using sheet metal roll-bonded frame materials.

[0096] The support plate 30 is designed to be independent of the fixing frame 20, so that when the fixing frame 20, the support plate 30 and the writing board 10 are assembled, they can be assembled with the writing board 10 separately. For example, the fixing frame 20 is first assembled to the first accommodating cavity 101 of the writing board 10, and then the support plate 30 is assembled to the second accommodating cavity 102 of the writing board 10, so that the assembly of the fixing frame 20, the support plate 30 and the writing board 10 can be carried out smoothly, and the fixing frame 20 and the support plate 30 support different parts of the panel 11, ensuring that the writing board 10 is not easy to collapse when writing.

[0097] Next, see Figures 3 to 7 ,in, Figures 5 to 7 Shown respectively Figure 2 The structural diagram, partial structural diagram and partial explosion structural diagram of the writing board in the writing board structure are combined with Figures 3 to 7 , the writing board 10 is described in further detail.

[0098] In some embodiments, the writing tablet 10 is an integrally formed structure to enhance the connection strength between the front panel 11, connecting plate 12, and back panel 13, simplifying assembly. For example, the writing tablet 10 is formed from a single sheet of material through a bending process to form the front panel 11, connecting plate 12, and back panel 13. Optionally, the connecting plate 12 of the writing tablet 10 can be bent approximately 90° relative to the front panel 11, and the back panel 13 can be bent approximately 90° relative to the connecting plate 12, without limitation.

[0099] In some embodiments, the writing surface 111 of the panel 11 is sprayed with special wear-resistant, smooth blackboard paint to facilitate writing on the writing surface 11 .

[0100] In some embodiments, the first accommodating cavity 101 forms a first opening 1011 on the opposite side of the connecting plate 12, and the fixing frame 20 is positioned in the first accommodating cavity 101 through the first opening 1011. After the structure of the writing board 10 is formed in place, the fixing frame 20 is connected to the writing board 10 to support and maintain the structure of the writing board 10. The second accommodating cavity 102 is formed between the side of the back panel 13 facing away from the connecting plate 12 and the second area 1122 of the writing board 10. This can be understood as: the second accommodating cavity 102 is formed between the side of the first opening 1011 facing away from the connecting plate 12 and the second area 1122 of the writing board 10.

[0101] In some embodiments, the second receiving cavity 102 forms a second opening 1021 opposite the second area 1122, and the support plate 30 is placed in the second receiving cavity 102 through the second opening 1021. The support plate 30, the fixing frame 20, and the writing board 10 are assembled separately for greater convenience.

[0102] In some embodiments, the connecting plate 12 extends along the edge of the panel 11, and the back plate 13 extends along the extension direction of the connecting plate 12, so that the fixing frame 20 located in the first accommodating cavity 101 between the connecting plate 12, the back plate 13 and the first area 1121 of the panel 11 can support the edge of the writing board 10 to ensure that the edge of the writing board 10 is not easy to collapse.

[0103] In some embodiments, the edges of the panel 11 include two opposing first side edges 113 and two opposing second side edges 114, with both first side edges 113 located between the two second side edges 114. The writing tablet 10 includes a connecting plate 12 connecting at least one of the two first side edges 113 and the two second side edges 114, and a back plate 13 connected to the connecting plate 12. Whether the first side edges 113 and the second side edges 114 are connected to the connecting plate 12 and the back plate 13 can be designed based on actual needs. The first side edges 113 and the second side edges 114 can be perpendicular to each other, and this is not limited to this.

[0104] In the embodiment of the present application, the two first side edges 113 and the two second side edges 114 are connected to the connecting plate 12 and the back plate 13, so that the outer periphery of the panel 11 is almost wrapped by the connecting plate 12 and the back plate 13, which can avoid problems such as scratching the writing board 10 during transportation.

[0105] For ease of distinction, the connecting plate 12 connected to the first side edge 113 is defined as the first connecting plate 12a, the connecting plate 12 connected to the second side edge 114 is defined as the second connecting plate 12b, the back plate 13 connected to the first connecting plate 12a is defined as the first back plate 13a, and the back plate 13 connected to the second connecting plate 12b is defined as the second back plate 13b. The first connecting plate 12a and the first back plate 13a both extend along the first side edge 113, and the second connecting plate 12b and the second back plate 13b both extend along the second side plate 114.

[0106] In some embodiments, if the writing tablet 10 includes two first connecting plates 12a and two first back plates 13a, the writing tablet structure 1 includes a fixing bracket 20 disposed corresponding to each first side edge 113 and a locking member 40 connecting each fixing bracket 20. Specifically, by disposing the fixing brackets 20 and locking members 40 at two opposing first side edges 113 of the panel 11, the fixing brackets 20 and locking members 40 effectively support the writing tablet 10 at the two first side edges 113. This reduces material costs and the manufacturing cost of the writing tablet structure 1 compared to disposing fixing brackets 20 along the entire perimeter of the writing tablet 10. Furthermore, since the edges of the writing tablet 10 are generally not used for writing, even if the writing tablet 10 is not supported by the fixing brackets 20 at the two second side edges 114, the writing tablet 10 is not subject to pressure and is less likely to collapse.

[0107] In some embodiments, if the writing board 10 includes a first connecting plate 12a, a first back plate 13a, a second connecting plate 12b, and a second back plate 13b, the first connecting plate 12a and the second connecting plate 12b, as well as the first back plate 13a and the second back plate 13b, are spaced apart. The design of spacing the first connecting plate 12a and the second connecting plate 12b, as well as the first back plate 13a and the second back plate 13b, helps to reduce the constraint between the first connecting plate 12a and the second connecting plate 12b when they are bent relative to the panel 11, as well as the constraint when the first back plate 13a is bent relative to the first connecting plate 12a and the second back plate 13b is bent relative to the second connecting plate 12b, thereby facilitating a smoother bending process.

[0108] It is understandable that each first connecting plate 12a and the adjacent second connecting plate 12b, as well as each first back plate 13a and the adjacent second back plate 13b, can be designed to be spaced apart so that the entire circumference bending process of the writing board 10 can be carried out smoothly.

[0109] In some embodiments, the writing board 10 has notches 14 formed between the first connecting plate 12a and the second connecting plate 12b, and between the first back plate 13a and the second back plate 13b. The notches 14 facilitate the placement of the corner piece 60, allowing for a smooth transition between the first connecting plate 12a and the second connecting plate 12b via the corner piece 60, thereby avoiding the formation of sharp corners at the corners of the writing board 10.

[0110] In some embodiments, the writing tablet 10 has notches 14 formed between each connecting plate 12a and the adjacent second connecting plate 12b, and between each first back plate 13a and the adjacent second back plate 13b. For example, the writing tablet 10 has four corners, each of which has notches 14 to accommodate corner pieces 60 and avoid sharp corners.

[0111] In some embodiments, the writing board 10 has gaps 14 formed between one of the first connecting plates 12a and the two second connecting plates 12b, and between the first back plate 13a and the two second back plates 13b corresponding to the one of the first connecting plates 12a. Figure 5 In the embodiment, the notches 14 are formed at the upper right and lower right corners of the writing board 10 to accommodate the corner pieces 60, while the notches 14 are not formed at the upper left and lower left corners of the writing board 10, and no corner pieces 60 are required. In this case, the side of the writing board structure 1 without the notches 14 (such as Figure 5 The left side in the figure) can be used to be spliced ​​with other writing board structures 1 or smart board structures 3, so that the side of the writing board structure 1 without the notch 14 will not be on the outside and not easily touched by the user. Therefore, there is no need to set the notch 14 and the corner piece 60.

[0112] In some embodiments, the writing board 10 comprises a steel plate. For example, the writing board 10 is made of a steel plate, which has the advantages of being easy to bend and low in cost. Of course, the writing board 10 can also be made of other materials, which is not limited to this.

[0113] In some embodiments, the thickness of the writing board 10 is greater than or equal to 0.3 mm and less than or equal to 0.4 mm. By properly designing the thickness of the writing board 10, the weight of the writing board structure 1 can be reduced and the bending and forming of the writing board 10 can be facilitated. Optionally, the thickness of the writing board 10 can be 0.3 mm, 0.32 mm, 0.34 mm, 0.36 mm, 0.37 mm, 0.4 mm, etc., without limitation.

[0114] In some embodiments, when the writing tablet 10 is connected to the locking member 40, drilling or tapping is not required. Instead, the pointed end of the locking member 40 can self-drill to form mounting holes and screws during the connection process. Self-drilling of mounting holes and screws during connection can be achieved by designing the material and thickness of the writing tablet 10. For example, the writing tablet 10 may comprise a steel plate with a thickness greater than or equal to 0.3 mm and less than or equal to 0.4 mm.

[0115] Next, see Figures 2 to 4 , the fixing frame 20 is described in further detail.

[0116] In some embodiments, the fixing frame 20 is connected to the writing tablet 10 by an interference fit. This interference fit facilitates pre-fixation of the fixing frame 20 within the first accommodating cavity 101 after the fixing frame 20 is placed therein, facilitating the subsequent connection of the writing tablet 10 and the fixing frame 20 with the locking member 40. Optionally, after the fixing frame 20 is placed within the first accommodating cavity 101, the fixing frame 20 may abut against the front panel 11 and the back panel 13, thereby pre-fixing the fixing frame 20 within the first accommodating cavity 101.

[0117] In some embodiments, the fixing frame 20 is a hollow structure to reduce the weight and manufacturing cost of the fixing frame 20 .

[0118] In some embodiments, the fixing frame 20 includes a plurality of fixing plates 21, which are connected end-to-end to form a ring-shaped hollow structure. The panel 11, the connecting plate 12, and the back plate 13 are each attached to a fixing plate 21. This reduces the weight of the fixing frame 20 while increasing the contact area between the fixing frame 20 and the writing tablet 10, thereby improving the support provided by the fixing frame 20 to the writing tablet 10. The fixing frame 20 can be a generally cylindrical hollow structure, extending generally along the edge of the panel 11.

[0119] In some embodiments, the thickness of the fixing plate 21 is greater than or equal to 1.5 mm and less than or equal to 2.5 mm. By properly designing the thickness of the fixing plate 21, the weight of the writing tablet structure 1 can be reduced while ensuring that the fixing plate 21 provides good support for the writing tablet 10. Alternatively, the thickness of the fixing plate 21 can be 1.5 mm, 1.75 mm, 2 mm, 2.25 mm, 2.5 mm, etc., without limitation.

[0120] In some embodiments, the fixing frame 20 includes a plastic component. For example, the fixing frame 20 is made of plastic, which is low-cost and easy to manufacture. It should be noted that when the fixing frame 20 includes a plastic component, the fixing frame 20 is designed as a hollow structure. Compared to a solid structure, this can also improve the surface collapse problem of the fixing frame 20 and enhance the supporting effect of the fixing frame 20 on the writing board 10. Of course, the fixing frame 20 can also be made of other materials, and this is not limited to this.

[0121] In some embodiments, when the fixing frame 20 is connected to the locking member 40, no holes or threads need to be drilled or tapped in the fixing frame 20. Instead, the pointed end of the locking member 40 can self-drill to form the mounting holes and screws during the connection process. Self-drilling of the mounting holes and screws during connection can be achieved by designing the material and thickness of the fixing frame 20. For example, the fixing frame 20 may comprise a plastic member with a thickness greater than or equal to 1.5 mm and less than or equal to 2.5 mm.

[0122] In some embodiments, the fixing brackets 20 may extend along the edge of the panel 11. In other embodiments, the writing tablet structure 1 may include multiple fixing brackets 20 spaced apart along the edge of the panel 11, thereby reducing the material and manufacturing costs of the fixing brackets 20. For example, the writing tablet structure 1 may include multiple fixing brackets 20 spaced apart along each first side edge 113.

[0123] The length, quantity, and location of the fixing brackets 20 can be determined according to the installation requirements of the writing board structure 1 , which will be described in more detail below.

[0124] Next, see Figures 2 to 4 , the support plate 30 is further described in detail.

[0125] In some embodiments, the support plate 30 is connected to the second area 1122 of the writing tablet 10 by adhesive bonding. For example, an adhesive is applied to the surface of the support plate 30 facing the second area 1122 and / or to the second area 1122, and then the two are connected by the adhesive. The adhesive can be applied to the entire surface of the support plate 30 facing the second area 1122 and / or to the second area 1122, ensuring a tight fit between all parts of the support plate 30 and the second area 1122 and preventing bulging. The adhesive can be adhesive tape, glue, etc., without limitation.

[0126] In some embodiments, when the support plate 30 is adhesively connected to the writing tablet 10 , the support plate 30 and the writing tablet 10 may be pressed together to enhance the tightness of the connection between the support plate 30 and the writing tablet 10 .

[0127] In some embodiments, the projection of the support plate 30 on the panel 11 does not overlap with the projections of the back plate 13 and the panel 11 , so that the support plate 30 can be directly placed in the second receiving cavity 102 at the second opening 1021 .

[0128] In other embodiments, the projection of the support plate 30 on the panel 11 partially overlaps with the projection of the back plate 13 on the panel 11, so that after the support plate 30 is placed in the second accommodating cavity 102 through the second opening 1021, it can move toward the first accommodating cavity 101, constrained by the panel 11 and the back plate 13, thereby improving the connection reliability between the support plate 30 and the writing tablet 10. It is understandable that in order to enable the support plate 30 to be placed in the second accommodating cavity 102 through the second opening 1021, the projection of the support plate 30 on the panel 11 is less than or equal to the diameter of the second opening 1021. Optionally, the end of the support plate 30 extending into the first accommodating cavity 101 can be provided with a chamfer to facilitate the movement of the support plate 30 into the first accommodating cavity 101. Optionally, the support plate 30 can extend into the first accommodating cavity 101 on one side or on both sides, without limitation.

[0129] It should be noted that if the support plate 30 partially moves into the first accommodating cavity 101, the support area of ​​the support plate 30 for the second area 1122 will be reduced, causing a portion of the second area 1122 to be unsupported and prone to collapse. In this case, another support plate can be provided to support the unsupported portion of the second area 1122. The other support plate and the panel 11 can be bonded, which is not limited to this. It is understood that the other support plate can also effectively alleviate the problem of partial unsupported second area 1122 caused by factors such as manufacturing errors.

[0130] In some embodiments, if the writing tablet 10 includes two first back panels 13a, the spacing between the two first back panels 13a along the second side edge 114 is greater than the dimension of the support panel 30 along the second side edge 114, so as to facilitate placement of the support panel 30 within the second receiving cavity 102 through the second opening 1021. Optionally, the spacing between the two first back panels 13a along the second side edge 114 is approximately 0.5 mm greater than the dimension of the support panel 30 along the second side edge 114 to meet tolerance requirements during the manufacturing process.

[0131] In some embodiments, the support plate 30 is a rigid support plate, providing excellent support and reducing material and process requirements compared to the honeycomb core + sheet metal base plate solution in related art. In some embodiments, the support plate 30 comprises a composite plate. Composite plates, composed of different materials, offer greater structural strength than honeycomb cores in related art, eliminating the need for double-sided metal plates, saving material and reducing costs.

[0132] In some embodiments, the support plate 30 includes a stacked quartz polymer layer, a fiber layer, a polystyrene layer, a fiber layer, and a quartz polymer layer, wherein the fiber layer is an alkaline-resistant high-strength fiber layer (e.g., carbon fiber, polyethylene), and the polystyrene layer is a 100% closed-cell polystyrene layer.

[0133] Next, see Figures 2 to 4 , the locking member 40 is further described in detail.

[0134] In some embodiments, the locking member 40 includes a screw, the nut of which is located on the side of the back panel 13 away from the panel 11, and the shaft of the screw passes through the back panel 13 and the fixing frame 20, thereby connecting and fixing the writing board 10 to the fixing frame 20. The screw can be a self-tapping screw. When connected to the writing board 10 and the fixing frame 20, the pointed end of the screw self-drills the mounting hole and the screw in the writing board 10 and the fixing frame 20, eliminating the need for pre-tapping and drilling the writing board 10 and the fixing frame 20. This reduces the manufacturing cost of the writing board 10 and the fixing frame 20, and eliminates the need for hole alignment in the writing board 10 and the fixing frame 20, thereby reducing assembly requirements.

[0135] In some embodiments, if the mounting frame 20 is hollow, the locking member 40 extends into the hollow region of the mounting frame 20. In some embodiments, the locking member 40 extends through at least one fixing plate 21 of the mounting frame 20, ensuring sufficient engagement between the locking member 40 and the mounting frame 20 and enhancing the stability of the locking member 40 connecting the writing tablet 10 to the mounting frame 20.

[0136] In some embodiments, at least one locking member 40 is provided on the fixing frame 20. If the writing tablet structure 1 includes a plurality of fixing frames 20 spaced apart along the edge of the panel 11, each fixing frame 20 may be connected to at least one locking member 40, or some fixing frames 20 may be connected to at least one locking member 40 while some fixing frames 20 are not connected to the locking member 40 and are connected to the writing tablet 10 via an interference fit.

[0137] In some embodiments, the writing board structure 1 includes a plurality of fixing frames 20 spaced apart along each first side edge 113 and a locking member 40 connecting each fixing frame 20 , so that the fixing frame 20 at each first side edge 113 is connected and fixed to the writing board 10 via the locking member 40 .

[0138] In some embodiments, see Figures 8 to 10 , which respectively show a partial three-dimensional exploded schematic diagram of the writing board structure of other embodiments of the present application, a partial cross-sectional schematic diagram of two different parts, and a partial three-dimensional exploded schematic diagram of the writing board structure of two different embodiments of the present application, Figures 8 to 10The writing tablet structure 1 further includes a locking member 50, which is located on the side of the back panel 13 facing away from the front panel 11. The locking member 50 includes a locking plate 51, which abuts the back panel 13 and the support plate 30. The locking member 40 is also connected to the locking plate 51. Designing the locking member 40 to connect the locking plate 51, the writing tablet 10, and the fixing frame 20 can increase the engagement surface of the locking member 40 during connection, increase the number of engagement threads of the locking member 40, and enhance the connection stability of the locking member 40.

[0139] Next, see Figures 8 to 10 , the locking component 50 is further described in detail.

[0140] In some embodiments, the locking element 50 includes one or more of a splicing element 50a and a shielding element 50b. The splicing element 50a can be used to connect the writing tablet structure 1 to another writing tablet structure 1 or the smart board structure 3, while the shielding element 50b can be used to shield the side edges of the writing tablet structure 1. In other words, the splicing element 50a and shielding element 50b provided on the writing tablet structure 1 can serve as the locking element 50, increasing the engagement surface of the locking element 40 during connection, increasing the number of engagement threads of the locking element 40, and enhancing the connection stability of the locking element 40. Of course, the locking element 50 can also be a separate component added to the writing tablet structure 1, without limitation.

[0141] It should be noted that when the writing board structure 1 is spliced ​​with other writing board structures 1 or smart board structures 3, the writing board structure 1 can be spliced ​​with other writing board structures 1 or smart board structures 3 at one of the first side edges 113 through the splicing piece 50a, and the shielding piece 50b can be set at the other first side edge 113, that is, the splicing piece 50a and the shielding piece 50b are respectively arranged at the two opposite first side edges 113 of the writing board structure 1, and respectively abut against the first back panel 13a at the corresponding first side edge 113.

[0142] In some embodiments, the splicing piece 50a is located on the side of one of the first back panels 13a away from the panel 11, and the splicing piece 50a includes a locking plate 51a, which abuts against one of the first back panels 13a and the support plate 30, and multiple locking members 40 include a first locking member 40a, which is also connected to the locking plate 51a.

[0143] In some embodiments, the writing tablet structure 1 may include multiple splicing pieces 50a spaced along the extension direction of one of the first back panels 13a to enhance the stability of the splicing between the writing tablet structure 1 and other writing tablet structures 1 and the smart board structure 3. For example, the writing tablet structure 1 may include three splicing pieces 50a located at the two ends and the middle of one of the first back panels 13a. Each splicing piece 50a may correspond to at least one fixing bracket 20 and a locking member 40 connected to the fixing bracket 20.

[0144] In some embodiments, the splicing piece 50a can be spliced ​​with other writing board structures 1 and smart board structures 3 by buckling, snapping, etc., which is not limited to this.

[0145] In an embodiment of the present application, the writing board structure 1 includes three splicing pieces 50a respectively located at the two ends and the middle of one of the first back panels 13a, wherein the two splicing pieces 50a located at the ends can be spliced ​​with other writing board structures 1 and smart board structures 3 by snapping, and the splicing piece 50a located in the middle can be spliced ​​with other writing board structures 1 and smart board structures 3 by snapping.

[0146] In some embodiments, the shielding member 50b is located on the side of the other first back panel 13a away from the panel 11, and the shielding member 50b includes a locking plate 51b, which abuts the other first back panel 13a and the support plate 30, and the multiple locking members 40 include a second locking member 40b, which is also connected to the locking plate 51b.

[0147] In some embodiments, the shielding member 50b extends along the extension direction of the other first back plate 13a to shield the side edges of the entire first back plate 13a in the longitudinal direction. The shielding member 50b can correspond to one or multiple spaced fixing frames 20 and the locking member 40 connecting the fixing frames 20.

[0148] In some embodiments, the shielding member 50b can also be used to connect the writing board structure 1 to a wall or other structure. For example, the shielding member 50b is provided with mounting holes, and the shielding member 50b can be connected to the wall by screwing or other means to achieve the installation and fixation of the writing board structure 1 on the wall.

[0149] Next, see Figures 5 to 7 , the corner piece 60 is described in further detail.

[0150] In some embodiments, the writing board structure 1 further includes two corner pieces 60, and notches 14 are provided at opposite ends of the other first back panel 13a, with the two corner pieces 60 respectively located in the two notches 14. In conjunction with the above description, when the writing board structure 1 is spliced ​​with another writing board structure 1 or a smart board structure 3, the splicing piece 50a and the shielding piece 50b are respectively provided at two opposite first side edges 113 of the writing board structure 1, and one side of the first side edge 113 corresponding to the shielding piece 50b will be located on the outside of the combined blackboard, that is, the other first back panel 13a will be located on the outside of the combined blackboard. Therefore, the notches 14 and the corner pieces 60 are provided at opposite ends of the other first back panel 13a to avoid sharp corners on the outside of the combined blackboard, thereby preventing problems such as scratches.

[0151] In some embodiments, the corner piece 60 includes a corner 61 and a plug-in block 62. The corner 61 is located in and fills the gap 14. The corner 61 smoothly transitions with the first connecting plate 12a and the second connecting plate 12b. The plug-in block 62 connects to the corner 61 and is inserted into the first receiving cavity 101. The corner piece 60 is connected to the writing tablet 10 through a plug-in connection, making it easy to assemble and disassemble.

[0152] In some embodiments, the corner piece 60 may include two plug-in blocks 62, which are located on opposite sides of the corner 61. The two plug-in blocks 62 are respectively used to insert into the two adjacent first accommodating cavities 101 of the writing board 10, thereby improving the connection stability between the corner piece 60 and the writing board 10.

[0153] In some embodiments, a step groove 63 can be formed between the corner 61 and the plug-in block 62. When the corner piece 60 is connected to the writing board 10, the connecting plate 12 and the back plate 13 of the writing board 10 can be filled in the step groove 63, so that the connection between the corner 61 and the connecting plate 12 and the back plate 13 is smoother.

[0154] In some embodiments, the assembly process of the corner piece 60 and the writing board 10 includes: first, the corner piece 60 is placed into the second receiving cavity 102 through the second opening 1021, and then the corner piece 60 is pushed from the second receiving cavity 102 through the gap between the first back plate 13a and the second back plate 13b into the notch 14, as shown in FIG. Figure 7 The pushing corner piece 60 shown in FIG. 1 moves from the lower left corner toward the upper right corner to enter the gap 14 .

[0155] The assembly process of the writing board structure 1 of the embodiment of the present application includes: first, placing the fixing frame 20 into the first receiving cavity 101 of the writing board 10, and pre-fixing the fixing frame 20 and the writing board 10 by means of an interference fit; and then placing the corner piece 60 into the notch 14 of the writing board 10. The fixing frame 20, the corner piece 60, and the writing board 10 can be assembled sequentially (e.g., first placing the fixing frame 20 into the first receiving cavity 101, then placing the corner piece 60 into the notch 14; or first placing the corner piece 60 into the notch 14, then placing the fixing frame 20 into the first receiving cavity 101), or simultaneously. Then, the support plate 30 is placed into the second receiving cavity 102 of the writing board 10, and the support plate 30 is fixed to the writing board 10 by means of bonding, etc. The locking member 50 is then locked to the assembled writing board 10, fixing frame 20, and support plate 30 using the locking member 40.

[0156] Based on the same inventive concept, the present application also provides a smart blackboard, see Figure 11 , Figure 11This is a schematic diagram of the structure of the smart blackboard provided by some embodiments of the present application, combined with Figure 11 The smart blackboard 2 includes the above-mentioned writing board structure 1 and the smart board structure 3, and the smart board structure 3 is spliced ​​with the writing board structure 1. The smart board structure 3 is located on the side of the writing board structure 1.

[0157] Among them, the writing board structure 1 can adopt a traditional writing blackboard according to the user's choice. Among them, the smart board structure 3 can be a touch panel with touch function, which can determine the position of the touch point through touch technology, thereby displaying the user's touch trajectory on the panel. The smart board structure 3 uses touch technology to operate the content displayed on the panel and display the touch trajectory to realize human-computer interaction, and integrates one or more functions such as a projector, whiteboard, screen, audio, TV, and video conferencing terminal. The user can touch the panel with a finger or a stylus, and the smart board structure 3 generates writing handwriting according to the touch operation input by the user and displays it on the panel, or generates control operations according to the touch operation input by the user to process the display content on the panel.

[0158] In some embodiments, the smart board structure 3 and the writing board structure 1 can be spliced ​​together using the aforementioned splicing piece 50 a.

[0159] In some embodiments, the smart blackboard 2 may include a smart board structure 3 and two writing board structures 1 located on opposite sides of the smart board structure 3 .

[0160] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0161] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A writing board structure, characterized in that: include: A writing board comprising an integrally formed front panel, a connecting plate, and a back panel, wherein the front panel has a writing surface and a back panel facing each other, the connecting plate connecting the front panel and extending toward the back panel away from the writing surface; the back panel opposing the front panel and spaced apart from each other, the back panel connecting the connecting plate at an end away from the front panel and extending toward a center of the writing board; the back panel comprising a first area corresponding to the back panel and a second area connected to the first area; a first accommodating cavity is formed between the first area, the connecting plate, and the back panel; and a second accommodating cavity is formed between the side of the back panel away from the connecting plate and the second area. A fixing frame, located in the first accommodating cavity; a support plate, located in the second accommodating cavity, the support plate being independent of the fixing frame and connected to the second area; A locking member is located on a side of the back plate facing away from the panel, and the locking member connects the back plate and the fixing frame.

2. The writing board structure according to claim 1, characterized in that: The first accommodating cavity forms a first opening on the opposite side of the connecting plate, and the fixing frame is placed in the first accommodating cavity through the first opening.

3. The writing board structure according to claim 1, characterized in that: The second accommodating cavity forms a second opening on the opposite side of the second area, and the support plate is placed in the second accommodating cavity through the second opening.

4. The writing board structure according to claim 1, characterized in that: The fixing frame is a hollow structure.

5. The writing board structure according to claim 4, characterized in that: The fixing frame comprises: A plurality of fixing plates are connected end to end in sequence to form a ring-shaped hollow structure, and the panel, the connecting plate and the back plate are respectively attached to one of the fixing plates.

6. The writing board structure according to claim 4 or 5, characterized in that: The locking member extends into the hollow area of ​​the fixing frame.

7. The writing board structure according to claim 1, characterized in that: The connecting plate extends along the edge of the panel, and the back plate extends along the extending direction of the connecting plate.

8. The writing board structure according to claim 1, wherein: The writing board structure includes a plurality of fixing frames spaced apart along the edge of the panel and the locking member connecting each fixing frame.

9. The writing board structure according to claim 1, characterized in that: Also includes: The locking member is located on the side of the back plate away from the panel. The locking member includes a locking plate. The locking plate abuts against the back plate and the support plate. The locking member is also connected to the locking plate.

10. The writing board structure according to claim 9, characterized in that: The locking component includes one or more of a splicing component and a shielding component.

11. The writing board structure according to claim 1, characterized in that: The edge of the panel includes two opposite first side edges and two opposite second side edges, and the two first side edges are both located between the two second side edges; The writing board includes the connecting plate connecting at least one of the two first side edges and the two second side edges, and the back plate correspondingly connected to the connecting plate.

12. The writing board structure according to claim 11, characterized in that: The writing board includes a plurality of connecting plates, wherein the plurality of connecting plates include two first connecting plates, and the two first connecting plates are respectively connected to the two first side edges and extend along the corresponding first side edges; The writing board includes a plurality of back panels, wherein the plurality of back panels include two first back panels, and the two first back panels are respectively connected to the two first connecting panels and extend along the corresponding first side edges; The writing board structure includes the fixing frame arranged corresponding to each first side edge and the locking member connected to each fixing frame.

13. The writing board structure according to claim 12, wherein: Also includes: a splicing piece located on a side of one of the first back plates facing away from the panel, the splicing piece including a locking plate abutting against one of the first back plates and the support plate, the plurality of locking pieces including a first locking piece further connected to the locking plate; The shielding member is located on the side of the other first back plate away from the panel. The shielding member includes a locking plate, which abuts the other first back plate and the support plate. The multiple locking members include a second locking member, which is also connected to the locking plate.

14. The writing board structure according to claim 11, wherein: The writing board includes a plurality of connecting plates, the plurality of connecting plates including a first connecting plate and two second connecting plates, the first connecting plate being connected to one first side edge and extending along the first side edge, and the two second connecting plates being respectively connected to two second side edges and extending along corresponding second side edges; The writing board includes a plurality of back panels, the plurality of back panels including a first back panel and two second back panels, the first back panel being connected to the first connecting panel and extending along the first side edge, and the two second back panels being respectively connected to the two second connecting panels and extending along the corresponding second side edges; The first connecting plate and the two second connecting plates are spaced apart, as are the first back plate and the two second back plates. The writing board is provided with notches on both sides of the first connecting plate. The writing board structure further includes two corner pieces, which are respectively located at the notch and connected to the writing board. Each of the corner pieces is smoothly connected to the first connecting plate and the second connecting plate.

15. The writing board structure according to claim 14, wherein: The corner piece comprises: A corner, located at the notch and filling the notch, wherein the corner is smoothly transitionally connected to the first connecting plate and the second connecting plate; A plug-in block is connected to the corner, and the plug-in block is inserted into the first accommodating cavity.

16. The writing board structure according to claim 1, wherein: The support plate is adhesively connected to the second area of ​​the writing board.

17. The writing board structure according to claim 1, wherein: The fixing frame includes a plastic part; and / or, the writing board comprises a steel plate; and / or, the thickness of the writing board is greater than or equal to 0.3 mm and less than or equal to 0.4 mm; and / or, the locking member comprises a screw; And / or, the support plate includes a composite plate.

18. A smart blackboard, characterized in that: include: The writing board structure according to any one of claims 1 to 17; The smart board structure is spliced ​​with the writing board structure.

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