Writing screen and intelligent blackboard

Abstract

The utility model provides a writing screen and an intelligent blackboard, and relates to the technical field of writing screens. The writing screen comprises a board body and a connecting piece, the board body is bent to form a writing board, a first folding edge and a second folding edge, and the connecting piece comprises a connecting body with a fillet and a connecting part. The first folding edge and the second folding edge are arranged on the periphery of the writing board, the round corner is formed between the first folding edge and the second folding edge through the connecting body with the round corner, and the first folding edge, the second folding edge and the connecting piece form the frame of the writing screen, so that compared with the prior art, the frame is omitted; therefore, the production and assembly efficiency of the writing screen is improved.

Description

Technical Field

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

[0002] At present, the writing screen used for smart blackboards generally includes a frame and a writing panel, and the periphery of the writing panel is embedded in the frame. Since the frame is generally a profile, the cost is relatively high, and the frame needs to be oxidized or coated with a protective layer (such as spraying oil or spray paint). In addition, during the assembly process, the assembly process of the frame and the writing panel is complicated, resulting in low assembly efficiency and high production cost of the writing screen. Utility Model Content

[0003] The present application provides a writing screen and a smart blackboard, aiming to solve the problems of low assembly efficiency and high cost of writing screens in the prior art.

[0004] The plate body is bent to form a writing board, a first folded edge and a second folded edge; the writing board defines a writing surface, the first folded edge and the second folded edge are adjacently arranged and located on a side of the writing board away from the writing surface, and there is a gap between the first folded edge and the second folded edge;

[0005] The connecting member includes a connecting body and a connecting portion, wherein the connecting body is arranged at the gap through the connecting portion to form a transition structure between the first folded edge and the second folded edge, and the first folded edge, the second folded edge and the connecting member form a frame of the writing screen.

[0006] In some embodiments of the present application, the writing board and the first folded edge integrally form a first "U"-shaped bending portion;

[0007] And / or, the first folded edge includes a first sub-board and a first connecting board, the first sub-board is arranged opposite to the writing board, the first connecting board is arranged between the first sub-board and the writing board, and is configured to connect the first sub-board and the writing board.

[0008] In some embodiments of the present application, the writing board and the second folded edge integrally form a second "U"-shaped bending portion;

[0009] And / or, the second folded edge includes a second sub-panel and a second connecting plate, the second sub-panel is arranged opposite to the writing board, the second connecting plate is arranged between the second sub-panel and the writing board, and is configured to connect the second sub-panel and the writing board.

[0010] In some embodiments of the present application, the connecting portion includes a first insertion end, the first sub-board, the first connecting board and the writing board together form a first accommodating cavity, and the first insertion end is inserted into the first accommodating cavity.

[0011] In some embodiments of the present application, the connecting portion also includes a second insertion end, the first insertion end and the second insertion end are respectively arranged at two opposite ends of the connecting body, the second sub-board, the second connecting board and the writing board are enclosed to form a second accommodating cavity, and the second insertion end is inserted into the second accommodating cavity.

[0012] In some embodiments of the present application, a second avoidance groove is provided on the surface of the first insertion end, the shape of the second avoidance groove is adapted to the shape of the first folded edge, and an end of the first folded edge close to the connecting member is accommodated in the second avoidance groove so that the connection between the first folded edge and the connecting body is located on the same plane;

[0013] And / or, a third avoidance groove is provided on the surface of the second insertion end, the shape of the third avoidance groove is adapted to the shape of the second folded edge, and one end of the second folded edge close to the connecting piece is accommodated in the third avoidance groove so that the connection between the second folded edge and the connecting body is located on the same plane.

[0014] And / or, the connecting body includes a second surface, the second surface is arranged between the first folded edge and the second folded edge to form a smooth transition structure, and the second surface is flush with the outer surfaces of the first connecting plate and the second connecting plate at the joint;

[0015] And / or, the connecting body includes a first surface, the first surface is arranged opposite to the writing surface, and the first surface and a surface of the first sub-board and the second sub-board facing away from the writing surface are located on the same plane.

[0016] In some embodiments of the present application, the board body also includes a rounded corner connection portion, which is located between the first folded edge and the second folded edge, the second surface is an arc-shaped circumferential surface, and a first avoidance groove is provided at one end of the second surface close to the writing board, and the rounded corner connection portion is located in the first avoidance groove to limit the connecting member.

[0017] In some embodiments of the present application, the connecting body also includes a bottom surface arranged opposite to the first surface, the bottom surface is connected to the second surface, the bottom surface abuts against a side of the writing board away from the writing surface, and an edge portion extending toward one side of the writing board is provided on the bottom surface, and the edge portion is arranged outside the side of the writing board located in the gap.

[0018] In some embodiments of the present application, an avoidance groove is further provided on the bottom surface, which is arranged opposite to the edge of the writing board close to the gap, and accommodates the flange formed on the side of the writing board located in the gap under the extrusion action of the edge.

[0019] In some embodiments of the present application, the writing screen also includes a support plate, which is arranged on the side of the writing board away from the writing surface for supporting the writing board, and the support plate at least partially abuts against the side of the connecting member away from the frame to limit the connecting member.

[0020] In some embodiments of the present application, the writing screen further includes a bottom plate, and a positioning portion is provided on a side of the bottom plate facing the writing board, and the positioning portion is used to limit the movement of the bottom plate relative to the writing board.

[0021] In some embodiments of the present application, the writing screen is square, and a first folded edge is provided on each side of the writing screen in the width direction; a pair of the first sub-plates are respectively abutted against the two side surfaces in the width direction of the support plate to limit the position;

[0022] And / or, a second folded edge is provided on one side of the writing screen in the length direction, a first flange is provided on the other side of the writing screen in the length direction, and the first flange and the second sub-plate are respectively abutted against and limited by two side surfaces of the support plate in the length direction;

[0023] And / or, a second folded edge is provided on one side of the length direction of the writing screen, and a first flange is provided on the other side of the length direction of the writing screen, the first folded edge, the second folded edge and the first flange define the border of the writing screen, and the first flange is used for splicing with the smart interactive tablet.

[0024] In some embodiments of the present application, the connecting portion includes a first insertion end and a second insertion end, the first insertion end and the second insertion end are arranged at two opposite ends of the connecting body, the first insertion end is configured to be connected to the first folded edge, and the second insertion end is configured to be connected to the second folded edge.

[0025] In some embodiments of the present application, one end of the first folded edge close to the second folded edge encloses a first accommodating cavity, and the first insertion end is inserted into the first accommodating cavity and connected to the first folded edge;

[0026] And / or, one end of the second folded edge close to the first folded edge encloses a second accommodating cavity, and the second insertion end is inserted into the second accommodating cavity and connected to the second folded edge.

[0027] A second aspect of the present application provides a smart blackboard, which includes a smart interactive tablet and the writing screen, and the writing screen is spliced ​​on one side of the smart interactive tablet.

[0028] In the present application, a first folded edge and a second folded edge are arranged at the periphery of the writing board, and a transition structure is formed between the first folded edge and the second folded edge by connecting the main body, and the first folded edge, the second folded edge and the connecting member form the frame of the writing screen. Compared with the prior art, there is no need to set a separate frame, thereby improving the production and assembly efficiency of the writing screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 is a structural schematic diagram of a first embodiment of a writing screen provided in an embodiment of the present application;

[0031] Figure 2 yes Figure 1 An exploded diagram of the writing screen;

[0032] Figure 3 yes Figure 1 A partial enlarged schematic diagram of point C in the middle;

[0033] Figure 4 yes Figure 2 A partial enlarged schematic diagram of point D in the middle;

[0034] Figure 5 is a structural schematic diagram of a second embodiment of a writing screen provided in an embodiment of the present application;

[0035] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure at AA in the middle;

[0036] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure at BB in the middle;

[0037] Figure 8 yes Figure 6 A partial enlarged schematic diagram of point E in the middle;

[0038] Fig. 9 yes Figure 7 A partial enlarged schematic diagram of point F in the middle;

[0039] Fig.10 is a structural schematic diagram of a third embodiment of a writing screen provided in an embodiment of the present application;

[0040] Fig.11is a structural schematic diagram of a fourth embodiment of a writing screen provided in an embodiment of the present application;

[0041] Fig.12 is a structural schematic diagram of an embodiment of a connector provided in an embodiment of the present application;

[0042] Fig.13 is a structural schematic diagram of an embodiment of a base plate provided in an embodiment of the present application;

[0043] Fig.14 yes Figure 7 A local enlarged schematic diagram of point G in the middle.

[0044] Reference numerals: 1000, writing screen; 100, board body; 110, writing board; 111, writing surface; 112, side surface; 120, first folded edge; 121, first sub-board; 122, first connecting board; 130, second folded edge; 131, second sub-board; 132, second connecting board; 140, gap; 151, first "U"-shaped bending portion; 151a, first accommodating cavity; 152, second "U"-shaped bending portion; 152a, second accommodating cavity; 160, rounded connecting portion; 1 70. First flange; 200. Connecting piece; 210. Connecting body; 211. First avoidance groove; 212. First surface; 213. Second surface; 214. Bottom surface; 214a. Edge portion; 214b. Opening; 214c. Avoidance groove; 220. Connecting portion; 221. First insertion end; 221a. Second avoidance groove; 222. Second insertion end; 222a. Third avoidance groove; 300. Bottom plate; 310. Positioning portion; 400. Support plate; 500. Mounting bracket. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present utility model.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description". Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. In order to enable any technician in the field to implement and use the utility model, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the utility model can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the utility model with unnecessary details. Therefore, the utility model is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0049] It is understandable that during the processing of the writing board, there will be sharp parts such as burrs on its side. In order to avoid the sharp parts on the writing screen frame from scratching the operator and to improve the aesthetics of the writing screen, it is generally necessary to cover the side of the writing board with a frame, and the adjacent frames are then connected by corner connectors. Since the frame is generally a profile, it is necessary to oxidize or apply a protective layer (such as spraying oil or painting) to the frame, which leads to the problem of complex preparation cost, production and assembly process of the writing screen.

[0050] The present application forms a writing board, a first folded edge and a second folded edge by bending a plate body, and a connecting member is arranged at the gap to form a transition structure between the first folded edge and the second folded edge. The first folded edge, the second folded edge and the connecting member form a frame of the writing screen, so that the writing screen in the present application can omit the traditional frame, reduce production costs, and improve the production and assembly efficiency of the writing screen.

[0051] In view of the above problems in the prior art, please refer to Figures 1 to 14, the embodiment of the present application provides a writing screen 1000, the periphery of which does not need to be provided with an additional frame, thereby reducing the production cost and improving the production and assembly efficiency of the writing screen 1000, which are described in detail below. It should be noted that the writing screen 1000 in the present application can be used as a sub-screen of a smart blackboard, and can also be used in other devices with writing functions, such as an ordinary blackboard, which is not limited here. If there is no special explanation, the writing screen 1000 of the smart blackboard is used as an example for description below.

[0052] See also Figures 1 to 4 The writing screen 1000 provided in the embodiment of the present application includes a plate body 100 and a connector 200. The plate body 100 is bent to form a writing board 110, a first folded edge 120 and a second folded edge 130. Specifically in this embodiment, the edge portion of the plate body 100 is bent toward one side, the unbent portion forms the writing board 110, and the bent portion forms the folded edge. Taking the plate body 100 as a square plate as an example, the square plate has four side edges, and two adjacent side edges can be bent toward the same side of the plate body 100 to form two folded edges, and the unbent portion in the middle of the plate body 100 forms the writing board 110.

[0053] In the embodiments of this application, please refer to Figure 7 and Figure 8 , the writing board 110 defines a writing surface 111. It is understandable that the writing board 110 is also called a blackboard, which is generally a planar structure, and the operator can present the teaching content in the form of blackboard writing. In the present application, the material of the writing board 110 is not limited, for example, it can be a writing board 110 made of metal material, it can also be a writing board 110 made of glass material, and it can also be a writing board 110 made of plastic material. To facilitate writing or display, a functional coating, such as a friction layer, an anti-reflective layer, etc., can also be provided on the writing surface 111. It should be noted that the material and structure of the writing board 110 do not belong to the main improvement points of the present application and are not limited here.

[0054] In the embodiments of this application, please refer to Figure 3 , Figure 4 and Fig.10 , the first folded edge 120 and the second folded edge 130 are arranged adjacent to each other and are located on the same side of the writing board 110, and are located on the side of the writing board away from the writing surface 111, and there is a gap 140 between the first folded edge 120 and the second folded edge 130. Exemplarily, there is a gap 140 between the ends of the first folded edge 120 and the second folded edge 130 that are close to each other, so as to avoid forming a sharp angle between the first folded edge 120 and the second folded edge 130, and the size of the gap 140 can be set as needed, and is not limited here.

[0055] Specifically, see Figure 3 , Figure 4and Fig.10 , the first folded edge 120 and the second folded edge 130 are both bent and extended in a direction away from the writing surface 111. It can be understood that the first folded edge 120 and the second folded edge 130 are also two adjacent side edges of the writing surface 111, that is, the first folded edge 120 and the second folded edge 130 are located at two adjacent side edges of the writing surface 111. For ease of understanding, taking the writing surface 111 as a rectangle as an example, the writing surface 111 has a pair of first side edges spaced apart and arranged in parallel along its width, and a pair of second side edges spaced apart and arranged in parallel along its length, each first side edge has a second side edge at both ends, and the pair of first side edges and the pair of second side edges enclose a rectangle. The first folded edge 120 is located at the first side, and the plane where the first folded edge 120 (for example, the first connecting plate 122 of the first folded edge 120) is located is perpendicular to the writing surface 111, and the plane where the second folded edge 130 (for example, the second connecting plate 132 of the second folded edge 130) is located is perpendicular to the writing surface 111, and the plane where the first folded edge 120 is located and the plane where the second folded edge 130 is located are perpendicular to each other. Since the first folded edge 120 and the second folded edge 130 are adjacently arranged, and the first folded edge 120 and the second folded edge 130 are perpendicular to each other, if the first folded edge 120 and the second folded edge 130 are directly connected, a sharp right angle will be formed at the connection between the first folded edge 120 and the second folded edge 130, resulting in poor aesthetics and easy scratches on operators.

[0056] In view of this, in the present application, there is a gap 140 between the first folded edge 120 and the second folded edge 130, and the connector 200 includes a connecting body 210 and a connecting portion 220, and the connecting body 210 is arranged at the gap 140 to form a transition structure between the first folded edge 120 and the second folded edge 130. Exemplarily, the connecting body 210 in the present application may have an arcuate surface, for example, Fig.10 The second surface 213 of the connecting body 210 is a curved surface that can fill the gap 140 between the first folded edge 120 and the second folded edge 130 to form a smooth transition structure between the first folded edge 120 and the second folded edge 130. The connecting body 210 can also be a curved plate with a second surface 213, or other structures with a second surface 213. In some other embodiments of the present application, the connecting body 210 can also be a structure with a chamfer, and the curved surface formed at the chamfer of the connecting body 210 fills the gap 140 between the first folded edge 120 and the second folded edge 130 to form a smooth transition structure, thereby preventing the sharp part on the writing screen frame from scratching the operator, which is not limited here.

[0057] The connecting portion 220 is used to connect the plate body 100 , and the first folded edge 120 , the second folded edge 130 and the connecting member 200 form a frame of the writing screen 1000 .

[0058] It can be understood that the writing board 110 in the present application is formed by bending the edge of the board body 100, and the transition between the writing surface 111 of the writing board 110 and the side edge (such as the first folded edge 120 and the second folded edge 130) is a continuous and smooth structure. The edge of the board body 100 is bent to form the first folded edge 120 and the second folded edge 130, so that the sharp part formed by processing at the edge of the board body 100 is hidden at the back side of the writing board 110 (that is, the side away from the writing surface), thereby avoiding scratching the operator and increasing the strength of the edge of the board body 100. At the same time, since there is a gap 140 between the first folded edge 120 and the second folded edge 130, the connecting body 210 is arranged at the gap 140 to form a transition structure between the first folded edge 120 and the second folded edge 130, further avoiding scratching the operator, while improving the aesthetics of the writing screen 1000. The first folded edge 120, the second folded edge 130 and the connecting member 200 in the present application form the frame of the writing screen 1000. There is no need to set a separate frame to cover the side of the writing board 110. Compared with the prior art, the traditional frame is omitted, thereby improving the production and assembly efficiency of the writing screen 1000 and reducing the production cost.

[0059] In some embodiments of this application, please refer to Figure 5 , Figures 8 to 10 , the writing board 110 and the first folded edge 120 integrally form a first "U"-shaped bend 151. In this embodiment, the writing board 110 and the first folded edge 120 integrally form the first "U"-shaped bend 151, so that the side edge with a sharp portion formed during the processing of the board body 100 is hidden inside the writing screen 1000, further preventing the sharp portion on the side from scratching the operator, improving the aesthetics of the writing screen 1000, and increasing the strength at the edge of the writing screen.

[0060] In some embodiments of this application, please refer to Figure 3, the first folding edge 120 includes a first sub-plate 121 and a first connecting plate 122, the first sub-plate 121 is arranged opposite to the writing board 110, the first connecting plate 122 is arranged between the first sub-plate 121 and the writing board 110, and is configured to connect the first sub-plate 121 and the writing board 110. In this embodiment, the first sub-plate 121 and the writing board 110 are arranged opposite to each other, and the first connecting plate 122 is arranged between the first sub-plate 121 and the writing board 110, and is configured to connect the first sub-plate 121 and the writing board 110, so that the first sub-plate 121, the first connecting plate 122 and the writing board 110 form a first "U"-shaped bending portion 151 as a whole, so that the edge with a sharp portion formed during the processing of the board body 100 (such as the burr formed by cutting) is hidden inside the writing screen 1000, further preventing the sharp portion at the edge from scratching the operator, improving the aesthetics of the writing screen 1000, and increasing the strength of the edge of the writing screen.

[0061] Please refer to the figure Figures 5 to 9 and Fig.14 In some embodiments of the present application, the writing screen 110 is square, and the width direction of the writing screen 110 (such as Figure 5 A first folded edge 120 is provided on each side of the support plate 400 (in the AA direction or the up-down direction); a pair of the first sub-plates 121 are respectively abutted against the two side surfaces in the width direction of the support plate 400 for limiting position. Specifically, one end of the first sub-plate 121 away from the first connecting plate 122 is abutted against the side surface of the support plate 400 for limiting position. It should be noted that the abutting position in the present application includes approaching or abutting. It can be understood that this embodiment is conducive to increasing the assembly accuracy of the support plate 400 by abutting against the two side surfaces in the width direction of the support plate 400 by a pair of the first sub-plates 121. In addition, when the edge of the writing board 110 or the first folded edge 120 is squeezed, the support plate 400 can support the first folded edge 120, thereby improving the strength of the edge of the writing board 110 and the first folded edge 120, and avoiding deformation of the edge of the writing board 110 and the first folded edge 120.

[0062] In some embodiments of the present application, the length direction of the writing screen 110 (eg Figure 5A second folding edge 130 is provided on one side of the writing screen 110 in the BB direction or the left-right direction, and a first flange 170 is provided on the other side of the writing screen 110 in the length direction. The first flange 170 and the second sub-plate 131 are respectively abutted against and limited by the two side surfaces in the length direction of the support plate 400. Specifically, the first flange 170 is arranged substantially parallel to the second connecting plate 132, the inner side surface of the first flange 170 (i.e., the side facing the second connecting plate 132) is abutted against and limited by one side surface in the length direction of the support plate 400 (i.e., the side close to and directly opposite to the first flange 170), and the end of the second sub-plate 131 away from the second connecting plate 132 is abutted against and limited by the other side surface in the length direction of the support plate 400. This structural arrangement is conducive to further increasing the assembly accuracy of the support plate 400. In addition, when the edge of the writing board 110, or the second folded edge 130, or the first flange 170 is squeezed, the support plate 400 can support the second folded edge 130 and the first flange 170, thereby improving the strength of the edge of the writing board 110, the second folded edge 130 and the first flange 170, and avoiding deformation of the edge of the writing board 110, the second folded edge 130 and the first flange 170.

[0063] In some embodiments of the present application, a second folding edge 130 is provided on one side of the length direction of the writing screen 110, and a first flange 170 is provided on the other side of the length direction of the writing screen. The first folding edge 120, the second folding edge 130 and the first flange 170 define the frame of the writing screen 110, and the first flange 170 is used for splicing with the smart interactive tablet. Specifically, the two first folding edges 120 are respectively arranged on the two side surfaces in the width direction of the writing screen 110, the first flange 170 is arranged on one side surface in the length direction of the writing screen 110, the side of the first flange 170 away from the second folding edge 130 is a splicing surface, the first flange 170 is spliced ​​with the smart interactive tablet through the splicing surface, and the second folding edge 130 is arranged on the other side surface in the length direction of the writing screen 110. In this embodiment, the frame of the writing screen 1000 is defined by the first folding edge 120, the second folding edge 130 and the first flange 170, so that the writing screen 1000 does not need to be provided with a separate frame, thereby improving the production and assembly efficiency of the writing screen 1000.

[0064] Similarly, the writing board 110 and the second folded edge 130 integrally form a second "U"-shaped bend 152. In this embodiment, the writing board 110 and the second folded edge 130 integrally form the second "U"-shaped bend 152, so that the side edge with a sharp portion formed during the processing of the board body 100 is hidden inside the writing screen 1000, further preventing the sharp portion on the side from scratching the operator, improving the aesthetics of the writing screen 1000, and increasing the strength at the edge of the writing screen.

[0065] Similarly, the second folding edge 130 includes a second sub-plate 131 and a second connecting plate 132, wherein the second sub-plate 131 is arranged opposite to the writing board 110, and the second connecting plate 132 is arranged between the second sub-plate 131 and the writing board 110, and is configured to connect the second sub-plate 131 and the writing board 110. In this embodiment, the second sub-plate 131 and the writing board 110 are arranged opposite to each other, and the second connecting plate 132 is arranged between the second sub-plate 131 and the writing board 110, and is configured to connect the second sub-plate 131 and the writing board 110, so that the second sub-plate 131, the second connecting plate 132 and the writing board 110 form a second "U"-shaped bending portion 152 as a whole, so that the side edge with a sharp portion formed during the processing of the plate body 100 is hidden inside the writing screen 1000, further preventing the sharp portion on the side edge from scratching the operator, improving the aesthetics of the writing screen 1000, and increasing the strength at the edge of the writing screen.

[0066] In some embodiments of the present application, the number of the first "U"-shaped bending portions 151 is two, the number of the second "U"-shaped bending portions 152 is one, and the two first "U"-shaped bending portions 151 are respectively arranged in the width direction of the writing screen 1000 (i.e. Figure 5In the up and down directions), a second "U"-shaped bending portion 152 is arranged on the side of the writing screen 1000 away from the main screen (described in detail below), that is, both sides in the width direction of the writing screen 1000 are provided with a first "U"-shaped bending portion 151, one of the two sides in the length direction of the writing screen 1000 is provided with a second "U"-shaped bending portion 152, and the other side in the length direction of the writing screen 1000 (that is, a side where the writing screen and the main screen are spliced) has no second "U"-shaped bending portion 152. For example, only the first flange 170 is provided on a side where the writing screen 1000 and the main screen are spliced. It can be understood that when installing the writing screen, the operator generally holds the two side edges of the writing screen 1000 in the width direction with both hands. This embodiment provides a first "U"-shaped bending portion 151 on both side edges in the width direction of the writing screen 1000, and a second "U"-shaped bending portion 152 on one of the two side edges in the length direction of the writing screen 1000, thereby reducing the preparation cost and preventing the operator from being scratched by the sharp edges of the writing screen 1000 when installing it. In addition, this embodiment provides a second "U"-shaped bend 15 on one of the two sides in the length direction of the writing screen 1000, and a first flange 170 on the other of the two sides in the length direction of the writing screen 1000. One side of the writing screen 1000 spliced ​​with the main screen is the first flange 170. After the writing screen 1000 is spliced ​​with the main screen, the sharp part at the edge of the first flange will be hidden and will not scratch the writing operator. Both sides in the width direction of the writing screen 1000 are provided with a first "U"-shaped bend 151, which not only ensures the safety of the writing operator, but also reduces the preparation cost. In some embodiments of the present application, please refer to Figure 3 and Fig.10 The connecting portion 220 includes a first insertion end 221, the first sub-board 121, the first connecting board 122 and the writing board 110 enclose a first accommodating cavity 151a, and the first insertion end 221 is inserted into the first accommodating cavity 151a. In this embodiment, by providing the first insertion end 221 on the connecting body 210, the first sub-board 121, the first connecting board 122 and the writing board 110 enclose a first accommodating cavity 151a, and the first insertion end 221 is inserted into the first accommodating cavity 151a, it is beneficial to improve the structural stability and compactness of the writing screen 1000.

[0067] Further, similarly, the connecting portion 220 also includes a second insertion end 222, the first insertion end 221 and the second insertion end 222 are respectively arranged at two opposite ends of the connecting body 210 (or the second surface 213), the second sub-plate 131, the second connecting plate 132 and the writing board 110 enclose a second accommodating cavity 152a, and the second insertion end 222 is inserted into the second accommodating cavity 152a. This embodiment is conducive to further improving the structural stability and compactness of the writing screen 1000 by respectively providing the first insertion end 221 and the second insertion end 222 at both ends of the connecting body 210, the first insertion end 221 is inserted into the first accommodating cavity 151a, and the second insertion end 222 is inserted into the second accommodating cavity 152a. In some embodiments of the present application, please refer to Figure 3 , Figure 4 , Figures 10 to 12 The connecting portion 220 includes a first insertion end 221 and a second insertion end 222, the first insertion end 221 and the second insertion end 222 are arranged at two opposite ends of the connecting body 210 (or the second surface 213), the first insertion end 221 is configured to be connected to the first folded edge 120, and the second insertion end 222 is configured to be connected to the second folded edge 130. In this embodiment, by arranging the first insertion end 221 and the second insertion end 222 at both ends of the connecting body 210, the first insertion end 221 is configured to be connected to the first folded edge 120, and the second insertion end 222 is configured to be connected to the second folded edge 130, it is beneficial to improve the connection strength between the connecting member 200 and the board body 100, thereby improving the structural stability of the writing screen 1000.

[0068] Exemplarily, the first insertion end 221 is fixedly connected to the first folding edge 120, for example, the first insertion end 221 and the first folding edge 120 may be snap-fitted, or the first insertion end 221 and the first folding edge 120 may be threadedly connected via fasteners, or the first insertion end 221 and the first folding edge 120 may be adhesively connected, or the first insertion end 221 and the first folding edge 120 may be connected via other parts so that the two do not move relative to each other, which is not limited here. Specifically, the first folding edge 120 is formed to enclose the first accommodating cavity 151a at one end close to the second folding edge 130, and exemplarily, the first "U"-shaped bending portion 151 is formed to enclose the first accommodating cavity 151a at one end close to the second folding edge 130, and the first insertion end 221 is inserted into the first accommodating cavity 151a and is fixedly connected to the first folding edge 120. Furthermore, the cross-sectional shape of the first insertion end 221 is adapted to the shape of the first accommodating cavity 151a, so that the structure of the writing screen is more compact and the stability is better. Similarly, the second insertion end 222 and the second folding edge 130 are fixedly connected by snapping, threading, or bonding. The second insertion end 222 and the second folding edge 130 are prevented from relative movement by other parts, which is not limited here. Specifically, the second folding edge 130 is enclosed at one end close to the first folding edge 120 to form a second accommodating cavity 152a. For example, the second "U"-shaped bend 152 is enclosed at one end close to the second folding edge 130 to form a second accommodating cavity 152a. The second insertion end 222 is inserted into the second accommodating cavity 152a and fixedly connected to the second folding edge 130. Furthermore, the cross-sectional shape of the second insertion end 222 is adapted to the shape of the second accommodating cavity 152a, so that the structure of the writing screen is more compact and the stability is better.

[0069] In some embodiments of this application, please refer to Figures 10 to 12 A second avoidance groove 221a is provided on the surface of the first insertion end 221, and the shape of the second avoidance groove 221a is adapted to the shape of the first folded edge 120. The end of the first folded edge 120 close to the connecting member 200 is accommodated in the second avoidance groove 221a so that the connection between the first folded edge 120 and the connecting body 210 is located on the same plane.

[0070] For details in this embodiment, please refer to Fig.10The connecting body 210 includes a first surface 212 and a second surface 213 that are adjacent and vertically arranged, wherein the first surface 212 is a fan-shaped surface, the second surface 213 is an arc-shaped circumferential surface, and the second surface 213 forms a smooth transition structure between the first folded edge 120 and the second folded edge 130. The first surface 212 is arranged between the first folded edge 120 and the second folded edge 130, and the first surface 212 is arranged opposite to the writing surface 111. The first surface 212 and the second surface 213 block or seal the gap 140 between the first folded edge 120 and the second folded edge 130. The writing board 110 and the first folded edge 120 integrally form a first "U"-shaped bending portion 151, the surface of the first insertion end 221 is sunken relative to the surface of the connecting body 210 to form a second avoidance groove 221a (that is, a step is formed between the surface of the first insertion end 221 and the surface of the connecting body 210), the second avoidance groove 221a is a U-shaped groove adapted to the first "U"-shaped bending portion 151, the first insertion end 221 is inserted into the first accommodating cavity 151a formed by the first "U"-shaped bending portion 151, and the first connecting plate 122 is close to the connecting body 210. One end of the first connecting plate 122 is located in the second avoidance groove 221a, and the side of the first connecting plate 122 facing away from the book support plate 400 (that is, the appearance surface or outer surface of the first connecting plate 122) is flush with or tangent to the connection between the second surface 213, and the end of the first sub-plate 121 close to the connecting body 210 is located in the second avoidance groove 221a, and the side of the first sub-plate 121 facing away from the writing surface 111 is flush with the first surface 212, that is, the side of the first sub-plate 121 facing away from the writing surface 111 and the first surface 212 are located on the same plane, thereby making the structure of the writing screen 1000 more compact and more aesthetically pleasing.

[0071] In some embodiments of the present application, similarly, a third avoidance groove 222a is provided on the surface of the second insertion end 222, and the shape of the third avoidance groove 222a is adapted to the shape of the second folded edge 130, and the end of the second folded edge 130 close to the connector 200 is accommodated in the third avoidance groove 222a so that the connection between the second folded edge 130 and the connection body 210 is located on the same plane. Specifically in this embodiment, the connection body 210 includes a first surface 212 and a second surface 213 that are adjacent and vertically arranged, wherein the first surface 212 is a fan-shaped surface, and the second surface 213 is an arc-shaped peripheral surface, and the first surface 212 and the second surface 213 shield or seal the gap 140 between the first folded edge 120 and the second folded edge 130, and form a smooth transition structure between the first folded edge 120 and the second folded edge 130. The writing board 110 and the second folded edge 130 integrally form a second "U"-shaped bending portion 152, and the surface of the second insertion end 222 is sunken relative to the surface of the connecting body 210 to form a third avoidance groove 222a (that is, a step is formed between the surface of the second insertion end 222 and the surface of the connecting body 210), and the third avoidance groove 222a is a U-shaped groove adapted to the second "U"-shaped bending portion 152. The second insertion end 222 is inserted into the second accommodating cavity 152a formed by the second "U"-shaped bending portion 152, and the second connecting plate 132 is close to the connecting body 210. One end of the second connecting plate 132 is located in the third avoidance groove 222a, and the side of the second connecting plate 132 facing away from the book support plate 400 (that is, the appearance surface or outer surface of the second connecting plate 132) is flush with or tangent to the connection between the second surface 213, and the end of the second sub-plate 131 close to the connecting body 210 is located in the third avoidance groove 222a, and the side of the second sub-plate 131 facing away from the writing surface 111 is flush with the first surface 212, that is, the side of the second sub-plate 131 facing away from the writing surface 111 and the first surface 212 are located on the same plane, thereby making the structure of the writing screen 1000 more compact and more aesthetically pleasing.

[0072] In some embodiments of this application, please refer to Figure 3 , Figure 4 and Fig.12The board body 100 further includes a rounded corner connection portion 160, the rounded corner connection portion 160 is located between the first folded edge 120 and the second folded edge 130, the second surface 213 is an arc-shaped peripheral surface, and the second surface 213 is provided with a first avoidance groove 211 at one end close to the writing board 110, and the rounded corner connection portion 160 is located in the first avoidance groove 211 to limit the connection member 200. In this embodiment, the rounded corner connection portion 160 is provided on the board body 100, and the first avoidance groove 211 adapted to the rounded corner connection portion 160 is provided on the second surface 213 of the connection member 200, so as to limit the connection member 200, which is conducive to improving the assembly accuracy of the board body 100 and the connection member 200. Exemplarily, the rounded connecting portion 160 respectively connects the first folded edge 120 (for example, one end of the first connecting plate 122 close to the connecting member 200), the second folded edge 130 (for example, one end of the second connecting plate 132 close to the connecting member 200), and the writing board 110 (for example, the writing board 110 is located at the corner between the first folded edge 120 and the second folded edge 130); the first folded edge 120, the second folded edge 130, and the rounded connecting portion 160 enclose the gap 140. In this embodiment, the rounded connecting portion 160 is provided between the first folded edge 120 and the second folded edge 130, and the rounded connecting portion 160 connects the first folded edge 120, the second folded edge 130, and the writing board 110, so as to further improve the strength of the writing screen, and make the connection between the first folded edge 120, the second folded edge 130, and the writing board 110 smoother and more aesthetically pleasing.

[0073] Exemplarily, the connecting body 210 includes an arcuate circumferential surface (i.e., a second surface 213), and a first avoidance groove 211 is provided at one end of the arcuate circumferential surface close to the writing board 110, and the rounded connecting portion 160 is located in the first avoidance groove 211 so that a side of the rounded connecting portion 160 that is away from the first avoidance groove 211 is located in the same plane as the second surface 213. In this embodiment, by providing a first avoidance groove 211 at one end of the arcuate circumferential surface close to the writing board 110, when the connecting member 200 is installed, the rounded connecting portion 160 is located in the first avoidance groove 211 so that a side of the rounded connecting portion 160 that is away from the first avoidance groove 211 is located in the same plane as the second surface 213, thereby making the structure of the writing screen 1000 more compact and more aesthetically pleasing. It should be noted that Fig.10 and Figure 3 The difference is Fig.10 The plate body 100 in the embodiment does not have the rounded connecting portion 160. Accordingly, Fig.10 There is no first avoidance groove 211 on the second surface 213, and this structural setting is conducive to further reducing the preparation process of the writing screen and reducing the preparation cost.

[0074] In some embodiments of this application, please refer to Fig.11 The connector 200 further includes a bottom surface 214 disposed opposite to the first surface 212, the bottom surface 214 is connected to the second surface 213, the bottom surface 214 abuts against a side of the writing board 110 away from the writing surface 111, and an edge portion 214a extending toward one side of the writing board 110 is disposed on the bottom surface 214, and the edge portion 214a is disposed outside the side surface 112 of the writing board 110 located in the gap 140. Exemplarily, the side surface 112 is an arc-shaped surface, and the edge portion 214a is adapted to the side surface 112. In this embodiment, the bottom surface 214 of the connector 200 is in contact with the side of the writing board 110 away from the writing surface 111, and the edge portion 214a of the connector 200 is arranged outside the side surface 112 of the writing board 110 located in the gap 140, so that the writing board 110 and the first sub-board 121 (or the second sub-board 131) are limited in the thickness direction of the connector 200 (that is, the direction of the line connecting the first surface 212 and the bottom surface 214), which is conducive to improving the connection stability of the connector 200 and improving the overall aesthetics of the writing screen. At the same time, the sharp part outside the side surface 112 of the writing board 110 will be hidden by the edge portion 214a, and will not scratch the writing operator, which not only ensures the safety of the writing operator, but also reduces the preparation cost.

[0075] Furthermore, the bottom surface 214 is also provided with an avoidance groove 214c, which is arranged opposite to the edge of the writing board 110 near the gap 140 (i.e., the portion of the writing board 110 near the side 112), and accommodates the flange formed by the side 112 of the writing board in the gap 140 under the pressure of the edge portion 214a. It can be understood that, in this embodiment, the avoidance groove 214c is arranged on the bottom surface 214, and the avoidance groove 214c accommodates the flange formed by the side 112 of the writing board under the pressure of the edge portion 214a, thereby preventing the side 112 of the writing board from turning outward (i.e., folding toward the side where the writing surface is located). Exemplarily, the bottom surface 214 is also provided with an opening 214b, and the connector 200 is also provided with a cavity connected to the opening 214b. This structural arrangement is conducive to reducing the material for preparing the connector 200 and reducing the preparation cost of the connector 200.

[0076] In some embodiments of the present application, the writing board 110, the first folded edge 120, the second folded edge 130 and the rounded corner connection portion 160 are an integrated structure. This embodiment makes the writing screen 1000 in the present application more stable and more aesthetically pleasing by setting the writing board 110, the first folded edge 120, the second folded edge 130 and the rounded corner connection portion 160 as an integrated structure. Exemplarily, the peripheral edge of the board body 100 is bent to form the writing board 110, the first folded edge 120, the second folded edge 130 and the rounded corner connection portion 160.

[0077] In some embodiments of this application, please refer to Figure 4 , Figures 6 to 9 , the writing screen 1000 also includes a support plate 400, a base plate 300 and a mounting bracket 500. Among them, the base plate 300 is arranged opposite to the writing board 110, and the support plate 400 is arranged between the base plate 300 and the writing board 110, and is used to support the writing board 110. The base plate 300, the support plate 400 and the writing board 110 are fixedly connected to each other. The mounting bracket 500 is arranged on the side of the base plate 300 away from the writing board 110, and is used to install and fix the writing screen 1000. It should be noted that the specific structures of the support plate 400, the base plate 300 and the mounting bracket 500 do not belong to the main improvement points of the present application and are not limited here.

[0078] In order to improve the connection strength between the support plate 400 and the writing board 110, in some embodiments of the present application, a layer of cotton can be first bonded and fixed on the side of the support plate 400 that is opposite to the writing board 110, and an adhesive layer can be applied on the side of the writing board 110 that is away from the writing surface 111, and then the layer of cotton on the support plate 400 and the side of the writing board 110 with the adhesive layer are pressed and cured, so that the support plate 400 and the writing board 110 are fixedly connected.

[0079] In some embodiments of the present application, the support plate 400 is disposed on the side of the writing board 110 away from the writing surface 111 for supporting the writing board 110, and the support plate 400 and the side of the connecting member 200 away from the frame are abutted and limited. In this embodiment, the support plate 400 and the side of the connecting member 200 away from the frame are abutted and limited, and the side of the connecting member 200 away from the support plate 400 is limited by the first folded edge 120 and / or the second folded edge 130, so that the connecting member 200 can be fixed only by the support plate 400 and the first folded edge 120 and / or the second folded edge 130, and the connecting member 200 can be fixed without thread locking or gluing, which is conducive to improving the assembly efficiency of the writing screen and reducing the assembly process.

[0080] Exemplarily, when assembling the writing screen 1000, the first insertion end 221 can be aligned with the inner opening of the first accommodating cavity 151a (that is, the opening on one side of the first "U"-shaped bend 151 away from the first connecting plate 122), and the second insertion end 222 can be aligned with the side opening of the second accommodating cavity 152a (that is, the opening on one side of the second "U"-shaped bend 152 away from the second connecting plate 132), and the connecting body 210 can be aligned with the gap, and then the connecting member 200 can be driven to move, so that the first insertion end 221 moves close to the first folded edge 120 until the first insertion end 221 is assembled into the first accommodating cavity 151a and is aligned with the first folded edge 120 (for example At the same time, the second insertion end 222 moves close to the second folded edge 130 so that the second insertion end 222 is assembled into the second accommodating cavity 152a and abuts against the second folded edge 130 (for example, the inner side of the second connecting plate 132), and the connecting body 210 is located in the gap and a smooth transition structure is formed between the first folded edge 120 and the second folded edge 130, and then the support plate 400 is installed, and the support plate 400 and the side of the connecting member 200 away from the frame are abutted and limited, so that the connecting member 200 can be fixed by the support plate 400 and the first folded edge 120 and / or the second folded edge 130.

[0081] In some embodiments of the present application, Fig.13The bottom plate 300 is provided with a positioning portion 310 on one side facing the writing board 110, and the positioning portion 310 is used to limit the movement of the bottom plate 300 relative to the writing board 110. Specifically, the positioning portion 310 is a folded edge provided at the edge of the bottom plate 300. When assembling the writing screen 1000, the positioning portion 310 can be provided at the gap between the edge of the support plate 400 and the edge of the plate body 100. Exemplarily, the positioning portion 310 can be provided between the first sub-plate 121 and the support plate 400. For example, an assembly gap is provided between one end 122 of the first sub-plate 121 facing away from the first connecting plate 122 and one side of the support plate 400 facing the first sub-plate 121. The positioning portion 310 is inserted into the gap, thereby realizing rapid positioning of the bottom plate 300, preventing the bottom plate 300 from sliding back when pressing, and improving the strength at the edge of the bottom plate 300. Of course, in other embodiments of the present application, a positioning hole compatible with the positioning portion 310 can also be provided on the support plate 400, and the positioning portion 310 is inserted into the positioning hole to achieve the installation and positioning of the base plate 300. The embodiment of the present application also provides a smart blackboard, which includes the writing screen 1000. Specifically, the smart blackboard includes an intelligent interactive tablet (also called a main screen, not shown in the figure) and a writing screen 1000, and the writing screen 1000 is spliced ​​and arranged on one side of the main screen. Of course, in other embodiments, a writing screen 1000 can also be provided on both sides of the main screen. Among them, the main screen is used to display the picture, and the writing screen 1000 is used for writing on the writing board 110. The specific structure of the main screen does not belong to the main improvement point of the present application and is not limited here.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0083] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0084] The above is a detailed introduction to a writing screen and a smart blackboard provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only used to help understand the method of the present utility model and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present utility model.

Claims

1. A writing screen, characterized in that: The writing screen comprises a plate body and a connecting piece; The plate body is bent to form a writing board, a first folded edge and a second folded edge; the writing board defines a writing surface, the first folded edge and the second folded edge are adjacently arranged and located on a side of the writing board away from the writing surface, and there is a gap between the first folded edge and the second folded edge; The connecting member includes a connecting body and a connecting portion, wherein the connecting body is arranged at the gap through the connecting portion to form a transition structure between the first folded edge and the second folded edge, and the first folded edge, the second folded edge and the connecting member form a frame of the writing screen.

2. The writing screen as claimed in claim 1, characterized in that: The writing board and the first folded edge integrally form a first "U"-shaped bending portion; And / or, the first folded edge includes a first sub-board and a first connecting board, the first sub-board is arranged opposite to the writing board, the first connecting board is arranged between the first sub-board and the writing board, and is configured to connect the first sub-board and the writing board.

3. The writing screen as claimed in claim 2, characterized in that: The writing board and the second folded edge integrally form a second "U"-shaped bending portion; And / or, the second folded edge includes a second sub-panel and a second connecting plate, the second sub-panel is arranged opposite to the writing board, the second connecting plate is arranged between the second sub-panel and the writing board, and is configured to connect the second sub-panel and the writing board.

4. The writing screen as claimed in claim 3, characterized in that: The connecting portion includes a first insertion end. The first sub-board, the first connecting board and the writing board together form a first accommodating cavity. The first insertion end is inserted into the first accommodating cavity.

5. The writing screen as claimed in claim 4, characterized in that: The connecting portion also includes a second insertion end, the first insertion end and the second insertion end are respectively arranged at two opposite ends of the connecting body, the second sub-board, the second connecting board and the writing board enclose a second accommodating cavity, and the second insertion end is inserted into the second accommodating cavity.

6. The writing screen as claimed in claim 5, characterized in that: A second avoidance groove is provided on the surface of the first insertion end, the shape of the second avoidance groove is adapted to the shape of the first folded edge, and an end of the first folded edge close to the connecting member is accommodated in the second avoidance groove so that the connection between the first folded edge and the connecting body is located on the same plane; And / or, a third avoidance groove is provided on the surface of the second insertion end, the shape of the third avoidance groove is adapted to the shape of the second folded edge, and an end of the second folded edge close to the connecting member is accommodated in the third avoidance groove so that the connection between the second folded edge and the connecting body is located on the same plane; And / or, the connecting body includes a second surface, the second surface is arranged between the first folded edge and the second folded edge to form a smooth transition structure, and the second surface is flush with the outer surfaces of the first connecting plate and the second connecting plate at the joint; And / or, the connecting body includes a first surface, the first surface is arranged opposite to the writing surface, and the first surface and a surface of the first sub-board and the second sub-board facing away from the writing surface are located on the same plane.

7. The writing screen according to claim 6, characterized in that: The board body also includes a rounded corner connection portion, which is located between the first folded edge and the second folded edge. The second surface is an arc-shaped peripheral surface. A first avoidance groove is provided at one end of the second surface close to the writing board. The rounded corner connection portion is located in the first avoidance groove to limit the connecting piece.

8. The writing screen according to claim 6, characterized in that: The connecting member also includes a bottom surface arranged opposite to the first surface, the bottom surface is connected to the second surface, the bottom surface abuts against a side of the writing board away from the writing surface, and an edge portion extending toward one side of the writing board is arranged on the bottom surface, and the edge portion is arranged outside the side surface of the writing board located in the gap.

9. The writing screen according to claim 8, characterized in that: The bottom surface is also provided with an escape groove, which is arranged opposite to the edge of the writing board close to the gap and accommodates the flange formed by the side of the writing board in the gap under the extrusion of the edge.

10. The writing screen according to any one of claims 1 to 9, characterized in that: The writing screen also includes a support plate, which is arranged on a side of the writing board away from the writing surface for supporting the writing board, and the support plate abuts against at least part of a side of the connecting member away from the frame to limit the connecting member.

11. The writing screen according to claim 10, characterized in that: The writing screen also includes a bottom plate, and a positioning portion is provided on a side of the bottom plate facing the writing board, and the positioning portion is used to limit the movement of the bottom plate relative to the writing board.

12. The writing screen according to claim 3, characterized in that: The writing screen is square, and a first folded edge is provided on each of the two sides in the width direction of the writing screen; a pair of the first sub-plates are respectively abutted against the two side surfaces in the width direction of the support plate to limit the position; And / or, a second folded edge is provided on one side of the writing screen in the length direction, a first flange is provided on the other side of the writing screen in the length direction, and the first flange and the second sub-plate are respectively abutted against and limited by two side surfaces of the support plate in the length direction; And / or, a second folded edge is provided on one side of the length direction of the writing screen, and a first flange is provided on the other side of the length direction of the writing screen, the first folded edge, the second folded edge and the first flange define the border of the writing screen, and the first flange is used for splicing with the smart interactive tablet.

13. The writing screen according to claim 1, characterized in that: The connecting portion includes a first insertion end and a second insertion end, wherein the first insertion end and the second insertion end are arranged at two opposite ends of the connecting body, the first insertion end is configured to be connected to the first folded edge, and the second insertion end is configured to be connected to the second folded edge.

14. The writing screen according to claim 5, characterized in that: An end of the first folded edge close to the second folded edge encloses a first accommodating cavity, and the first insertion end is inserted into the first accommodating cavity and connected to the first folded edge; And / or, one end of the second folded edge close to the first folded edge encloses a second accommodating cavity, and the second insertion end is inserted into the second accommodating cavity and connected to the second folded edge.

15. A smart blackboard, characterized in that: The smart blackboard includes a smart interactive tablet and a writing screen as described in any one of claims 1 to 14, and the writing screen is spliced ​​on one side of the smart interactive tablet.

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