Sub-screen assembly and smart blackboard

Abstract

The present disclosure relates to the technical field of smart interaction blackboard, and discloses a sub-screen assembly and a smart blackboard, which comprise a panel, a bottom plate, an edge sealing strip and a supporting layer, the side edges of the panel are bent towards the bottom plate to form a first bent structure, the side edges of the bottom plate are bent towards the panel to form a second bent structure, and the first bent structure and the second bent structure are spliced; the edge sealing strip is connected between the panel and the bottom plate, the edge sealing strip is provided with a clamping groove, one of the first bent structure and the second bent structure is inserted into the clamping groove, and the other of the first bent structure and the second bent structure passes through the gap between the two ends of the edge sealing strip. The present disclosure uses the edge sealing strip to replace the outer frame, reduces materials and assembly, and lowers the cost; the overall structure is simple, the types of materials are few, and the assembly is convenient; the scheme has high reliability and low cost.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of smart interactive blackboard, and particularly relates to a sub-screen assembly and a smart blackboard. BACKGROUND

[0002] The smart interactive blackboard is an intelligent teaching interactive product, which combines a traditional writing blackboard and an interactive display screen, can easily switch between an ordinary writing board and multimedia applications, and greatly improves the flexibility, richness and intelligence of education and teaching.

[0003] The smart interactive blackboard generally includes a main screen assembly and a sub-screen assembly arranged in a splicing manner, wherein the main screen assembly is used for electronic display, and the sub-screen assembly is used for writing. The traditional sub-screen assembly is generally provided with an outer frame, which mainly plays a role of decoration and connection, and adopts an aluminum alloy or platinum frame, which has a high material and processing cost. In addition, the outer frame and the support layer are fixed by screw connection, which has a high assembly cost, and the overall reliability is not strong due to the easy slipping and loosening of self-tapping screws. SUMMARY

[0004] Embodiments of the present disclosure aim to provide a sub-screen assembly and a smart blackboard to solve the technical problems of high cost and low overall reliability of the sub-screen assembly adopting an outer frame in the prior art.

[0005] One embodiment of the present disclosure provides a sub-screen assembly, comprising:

[0006] a panel;

[0007] a bottom plate, a side edge of the panel is bent towards the bottom plate to form a first bent structure, a side edge of the bottom plate is bent towards the panel to form a second bent structure, and the first bent structure and the second bent structure are spliced;

[0008] an edge sealing strip connected between the panel and the bottom plate, the edge sealing strip is provided with a clamping groove, one of the first bent structure and the second bent structure is inserted into the clamping groove, the other of the first bent structure and the second bent structure passes through a gap between two ends of the edge sealing strip, and the panel, the bottom plate and the edge sealing strip surround to form a containing space; and

[0009] a support layer located in the containing space and connected between the panel and the bottom plate.

[0010] In one embodiment, the panel is rectangular and includes a first side edge, a second side edge, a third side edge and a fourth side edge connected in sequence, the first side edge is bent towards the bottom plate to form the first bent structure;

[0011] The second bending structure is arranged corresponding to the second side edge, the third side edge and the fourth side edge;

[0012] The second bending structure is inserted into the card slot, and the first bending structure passes through the gap between the two ends of the edge strip;

[0013] The panel is arranged on the edge strip and faces away from the opening of the card slot.

[0014] In one embodiment, the side of the edge strip facing away from the opening of the card slot is provided with a card table;

[0015] The panel is arranged on the card table.

[0016] In one embodiment, the outer side of the card table is provided with a card eave, which protrudes from the card table;

[0017] The second side edge, the third side edge and the fourth side edge respectively abut against the card eave.

[0018] In one embodiment, the inner wall of one side of the card slot is provided with a boss;

[0019] The second bending structure abuts against the boss.

[0020] In one embodiment, the inner wall provided with the boss is provided with an inclined surface for facilitating the insertion of the second bending structure, and the inclined surface is located at the opening of the card slot.

[0021] In one embodiment, the inner walls of both sides of the card slot are provided with bosses, and the bosses are staggered in a dog-tooth shape;

[0022] The card table is provided with a groove, and the groove is located beside the card eave;

[0023] The second bending structure abuts against the boss.

[0024] In one embodiment, the second bending structure is provided with two first corners and two second corners, one of the first corners is located at the intersection of the first side edge and the second side edge, the other first corner is located at the intersection of the first side edge and the fourth side edge, one of the second corners is located at the intersection of the second side edge and the third side edge, and the other second corner is located at the intersection of the third side edge and the fourth side edge;

[0025] The radius of the first corner is smaller than the radius of the second corner.

[0026] In one embodiment, the first bending structure is provided with a notch for passing through the edge strip at one end close to the second bending structure.

[0027] Another embodiment of the present disclosure also provides a smart blackboard, comprising a main screen assembly and the secondary screen assembly of the above-mentioned embodiments, wherein the secondary screen assembly is connected to the main screen assembly.

[0028] Compared with the prior art, in the secondary screen assembly and the smart blackboard provided by the embodiments of the present disclosure, the edge strip is connected between the panel and the bottom plate, the edge strip is provided with a clamping groove, one of the first bending structure and the second bending structure is inserted into the clamping groove, and the other of the first bending structure and the second bending structure passes through the gap between the two ends of the edge strip. In this way, the edge strip is used to replace the metal frame in the related art, the assembly process is simplified, and the structure is simpler. BRIEF DESCRIPTION OF DRAWINGS

[0029] One or more embodiments are exemplarily illustrated by the figures in the drawings corresponding thereto, and the exemplarily illustrations do not constitute a limitation on the embodiments, elements with the same reference numerals in the drawings represent similar elements, unless specifically stated otherwise, and the figures in the drawings do not constitute a proportional limitation.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the smart blackboard in the related art;

[0031] Figure 2 It is a partial structure sectional view of the secondary screen assembly of the smart blackboard in the related art;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the secondary screen assembly of the present disclosure; Figure 1 It is an enlarged view of A1 in FIG.

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure of the secondary screen assembly of the present disclosure;

[0034] Figure 5 It is an exploded view of one embodiment of the secondary screen assembly of the present disclosure;

[0035] Figure 6 It is an enlarged view of A2 in FIG. Figure 5

[0036] It is an assembly schematic diagram of the edge strip, the panel and the bottom plate of the secondary screen assembly of the present disclosure; Figure 7

[0037] It is another assembly schematic diagram of the edge strip, the panel and the bottom plate of the secondary screen assembly of the present disclosure; Figure 8

[0038] It is a schematic diagram of the edge strip and the bottom plate of the secondary screen assembly of the present disclosure, wherein the edge strip part is omitted; Figure 9

[0039] Figure 10 ​Fig. 1 is a schematic view of a connection relationship between a secondary screen assembly and a primary screen assembly according to the present disclosure.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 10, primary screen assembly; 20, 300, secondary screen assembly; 21, core layer; 22, first adhesive layer; 23, second adhesive layer; 24, writing panel; 25, base; 26, outer frame; 261, mounting hole; 30, panel; 31, first bending structure; 320, first corner; 330, second corner; 34, notch; 40, bottom plate; 41, second bending structure; 50, edge sealing strip; 51, clamping groove; 511, boss; 512, inclined surface; 52, clamping platform; 521, clamping eave; 53, groove; 60, support layer; 70, adhesive layer; 71, first adhesive layer; 72, second adhesive layer. DETAILED DESCRIPTION

[0042] For the purpose of facilitating the understanding of the present disclosure, the present disclosure will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "connected" to another element, it can be directly on the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "left", "right", "top", "bottom", "top", "bottom", and the like used in the present specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0043] Unless otherwise defined, all technical and scientific terms used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms used in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0044] As Figure 1 shown, the smart blackboard in the related art includes a primary screen assembly 10 and a secondary screen assembly 20, the primary screen assembly 10 is located in the middle, and one secondary screen assembly 20 is installed on each side of the primary screen assembly 10.

[0045] As Figure 2 and Figure 3As shown, the secondary screen assembly 20 comprises a core layer 21, a first adhesive layer 22, a second adhesive layer 23, a writing panel 24, a base 25 and an outer frame 26, the first adhesive layer 22 is located between the writing panel 24 and the core layer 21, the second adhesive layer 23 is located between the base 25 and the core layer 21, the writing panel 24 is provided with a first bending structure 31, the base 25 is provided with a second bending structure 41, the second bending structure 41 of the base 25 and the first bending structure 31 of the writing panel 24 are clamped between the side of the core layer 21 and the outer frame 26, and the outer frame 26 is clamped at the periphery of the base 25 and the writing panel 24. The core layer 21 can be selected from a honeycomb core.

[0046] The outer frame 26 mainly plays a decorative and connecting role, the outer frame 26 is not provided on the edge of the secondary screen assembly 20 and the main screen assembly 10, and the outer frame 26 is provided on the other three edges, the outer frame 26 is in a U shape, generally made of aluminum alloy or sheet metal, the bottom of the outer frame 26 is provided with a mounting hole 261 for mounting a screw, the screw is arranged in the mounting hole 261 to connect and fix the outer frame 26 and the base 25, the assembly cost is high, and the structure is complex.

[0047] The present disclosure mainly improves the structure of the secondary screen assembly 20 and provides a secondary screen assembly 300, which replaces the metal frame in the related art with an edge sealing strip 50, simplifies the assembly process, and has a simpler structure.

[0048] As shown in Figure 4 , Figure 5 , Figure 6 As shown, Figure 4 is a perspective view of the secondary screen assembly of the present disclosure, Figure 5 is an exploded view of one embodiment of the secondary screen assembly of the present disclosure, Figure 6 is Figure 5 is an enlarged view of A2.

[0049] One embodiment of the present disclosure provides a secondary screen assembly 300, comprising two first arc-shaped corners 320 and two second arc-shaped corners 330, the two first arc-shaped corners 320 are adjacent, the two second arc-shaped corners 330 are adjacent, the radius of the first arc-shaped corner 320 is greater than the radius of the second arc-shaped corner 330, the first arc-shaped corner 320 and the second arc-shaped corner 330 can play a foolproof role to avoid installation errors, the side between the two second arc-shaped corners 330 is a splicing side for connecting the main screen assembly 10, and the radius of the second arc-shaped corner 330 is smaller than the radius of the first arc-shaped corner 320, which can avoid excessive gap at the corner after the secondary screen assembly 300 is spliced with the main screen assembly 10, affecting the appearance.

[0050] The sub-screen assembly 300 comprises a panel 30, a bottom plate 40, a sealing strip 50, a support layer 60 and a glue layer 70. The panel 30 is rectangular and comprises a first side edge, a second side edge, a third side edge and a fourth side edge connected in sequence. The first side edge is bent towards the bottom plate 40 to form the first bent structure 31. The side edge of the bottom plate 40 is bent towards the panel 30 to form the second bent structure 41. The second bent structure 41 is arranged corresponding to the second side edge, the third side edge and the fourth side edge. The first bent structure 31 and the second bent structure 41 are spliced. The sealing strip 50 is connected between the panel 30 and the bottom plate 40. The sealing strip 50 is provided with a clamping groove 51. The second bent structure 41 is inserted into the clamping groove 51. The first bent structure 31 passes through the gap between the two ends of the sealing strip 50. The panel 30 is arranged on the sealing strip 50 and away from the opening of the clamping groove 51.

[0051] The first side edge is provided with the first bent structure 31. The side edge of the bottom plate 40 is provided with the second bent structure 41. The position of the second bent structure 41 corresponds to the second side edge, the third side edge and the fourth side edge of the panel 30, that is, the second bent structure 41 is three-edge bent. The first bent structure 31 and the second bent structure 41 are used to splice the panel 30 and the bottom plate 40 into a three-dimensional structure. The sealing strip 50 is a flexible material that can be bent and deformed and comprises a clamping groove 51 and a clamping table 52. The side of the sealing strip 50 away from the opening of the clamping groove 51 is provided with the clamping table 52. The panel 30 is arranged on the clamping table 52.

[0052] The opening of the clamping groove 51 faces the bottom plate 40. The clamping table 52 is located outside the bottom end of the clamping groove 51. The second bent structure 41 is inserted into the clamping groove 51. The panel 30 is mounted on the clamping table 52. The panel 30, the bottom plate 40 and the sealing strip 50 form a containing space. The containing space has a certain sealing property and has better waterproof and dustproof effects. Water vapor, dust and other suspended matters in the air are not easy to enter and accumulate in the interior of the sub-screen assembly 300, which is beneficial to protect the internal components and prolong the service life. The sealing strip 50 has elasticity and can slightly elastically deform. Compared with a metal frame, the sealing strip 50 has better resistance to external force and higher reliability.

[0053] The support layer 60 is arranged in the containing space. The support layer 60 is also called a sandwich material and mainly bears shear stress to make the sandwich structure have high bending stiffness.

[0054] The glue layer 70 includes a first glue layer 71 and a second glue layer 72, the support layer 60 and the panel 30 are adhered by the first glue layer 71, the support layer 60 and the bottom plate 40 are adhered by the second glue layer 72, the glue layer 70 is located in the accommodating space, and the glue layer 70 can be selected from glue or a polymer film. The glue layer 70 is used to cooperate with the panel 30 and the bottom plate 40 to complete the adhesion, the assembly cost is low, the reliability and the aesthetics are strong.

[0055] The support layer 60 is located between the panel 30 and the bottom plate 40, the panel 30 and the bottom plate 40 are adhered by glue, and generally, the polymer film is pressed by heating to combine the panel 30 and the bottom plate 40 with the support layer 60.

[0056] In an embodiment, the side edge of the sub-screen assembly 300 spliced with the main screen assembly 10 is not provided with the edge sealing strip 50, the sub-screen assembly 300 removes the outer frame 26, the raw material is bent to form a bending structure, and the edge sealing strip is self-provided. The panel 30 is spliced by bending the edge, the edge sealing strip 50 is made of plastic material and is deformable, and the three edges of the bottom plate 40 are edge-sealed during the edge sealing, or three edges of the four edges of the panel 30 which are not spliced with the main screen assembly 10 are edge-sealed.

[0057] In an embodiment, the panel 30 is rectangular, a first side edge of the panel 30 is folded along a vertical direction to form a first bending structure 31, three side edges of the bottom plate 40 are folded along a vertical direction to form a second bending structure 41, the second bending structure 41 is embedded in the clamping groove 51, three edges (i.e., a second side edge, a third side edge, and a fourth side edge) of the panel 30 which are not folded are embedded in the clamping table 52, the first bending structure 31 is connected to one side edge of the bottom plate 40 which is not folded, and the first bending structure 31 is spliced with the main screen assembly 10.

[0058] During installation, the second glue layer 72 is first applied on the bottom plate 40, the support layer 60 is then placed on the second glue layer 72, the first glue layer 71 is applied on the support layer 60, the panel 30 is placed in the clamping table 52 and kept parallel to the bottom plate 40, and after the panel 30 is installed, the panel 30, the bottom plate 40, and the support layer 60 are bonded by the adhesive under preset environmental conditions, the preset environmental conditions include temperature and pressure, the adhesive is generally liquid or paste, and these adhesives need to be cured before they can play a role in adhesion, the curing temperature is one of important parameters of the adhesive during curing, and the curing temperature should be strictly controlled during the curing process, and a certain pressure is applied during the curing process, which is beneficial to the adhesion of the glue layer and the adherend and guarantees the quality. The adhesive cooperates with the edge sealing strip 50 to splice the panel 30 and the bottom plate 40 together, replaces the traditional combination of the outer frame 26 and the screw, saves materials, reduces the material cost, simplifies the assembly process, saves the labor cost, and is more stable and reliable after the adhesive solidifies.

[0059] In one embodiment, the inner wall of one side of the card slot 51 is provided with a boss 511 for reducing the gap between the two inner walls of the card slot 51. The boss 511 can be strip-shaped or point-shaped, preferably horizontally arranged in a strip shape, and the cross section of the strip-shaped protruding structure is semicircular, i.e. the surface is an arc surface of a cylinder, which can increase the friction between the second bending structure 41 and the edge strip 50 and enhance the overall reliability. Specifically, the edge strip 50 is clamped into the second bending structure 41. In order to facilitate insertion, a gap fit is generally used. This facilitates insertion but can cause gaps, affect the appearance, and easily accumulate dust. Therefore, the horizontally arranged strip-shaped boss 511 can be extruded with the second bending structure 41 of the bottom plate 40 to achieve an interference fit. The boss 511 is kept at a distance from the end of the card slot 51, which can avoid reducing the insertion efficiency.

[0060] In one embodiment, the edge strip 50 is made of flexible material and can be bent and deformed in any direction. The edge strip 50 is sleeved on the three bent edges of the bottom plate 40 to form a U shape. The clamping table 52 is planar. The side edges of the panel 30 are placed on the clamping table 52. The outer side of the clamping table 52 is provided with a clamping eave 521 which protrudes from the clamping table 52. The second side edge, the third side edge and the fourth side edge abut against the clamping eave 521 respectively. When the panel 30 is placed on the clamping table 52, the clamping eave 521 abuts against the edge of the panel 30 to prevent the panel 30 from moving in the plane direction of the clamping eave 521. The first adhesive layer 71 bonds the support layer 60 and the panel 30 together to prevent the panel 30 from separating from the support layer 60 in the direction perpendicular to the support layer 60. The main body of the panel 30 is embedded in the edge strip 50. The first adhesive layer 71 and the panel 30 are closely attached. The panel 30 is bonded to the support layer 60 to remain stable. The clamping table 52 cooperates with the adhesive to replace the outer frame 26 and screws to fix the panel 30 on the edge strip 50. The assembly is simple, cost-saving, and makes the surface of the sub-screen assembly 300 neat and beautiful.

[0061] As shown in Figure 7 In one embodiment, the inner wall of one side of the card slot 51 is provided with a boss 511 for reducing the gap between the two inner walls of the card slot 51. The boss 511 can be strip-shaped or point-shaped, preferably horizontally arranged in a strip shape, and the cross section of the strip-shaped protruding structure is semicircular, i.e. the surface is an arc surface of a cylinder, which can increase the friction between the second bending structure 41 and the edge strip 50 and enhance the overall reliability. Specifically, the edge strip 50 is clamped into the second bending structure 41. In order to facilitate insertion, a gap fit is generally used. This facilitates insertion but can cause gaps, affect the appearance, and easily accumulate dust. Therefore, the horizontally arranged strip-shaped boss 511 can be extruded with the second bending structure 41 of the bottom plate 40 to achieve an interference fit. The boss 511 is kept at a distance from the end of the card slot 51, which can avoid reducing the insertion efficiency.

[0062] As shown in Figure 8As shown, in another embodiment, the inner wall of the clamping groove 51 on both sides is provided with a boss 511, and the bosses 511 on both sides are staggered in a dog-tooth shape. Figure 7 In another embodiment, the cross-sectional thickness of the edge strip 50 is the same, but the depth of the clamping groove 51 is shallower, Figure 7 The depth of the clamping groove 51 in the embodiment is 68.4mm, Figure 8 The depth of the clamping groove 51 in the embodiment is 48mm, and Figure 8 In the embodiment, the single-sided boss 511 of the clamping groove 51 of the edge strip 50 is changed to a double-sided boss 511, the depth of the clamping groove 51 is reduced, and the connecting point in the edge strip 50 is closer to the outside of the clamping groove 51, which can effectively solve the problem that the edge strip 50 is easily broken by hand in appearance and enhance the reliability; the second bending structure 41 inserted into the edge strip 50 can be clamped by the bosses 511 on both sides of the edge strip 50, which can not only avoid the disconnection of the edge strip 50 from the bottom plate 40 during assembly but also ensure the appearance gap between the edge strip 50 and the bottom plate 40. When the depth of the clamping groove 51 is reduced, there is more redundant space between the clamping groove 51 and the clamping post 52, and a groove 53 can be arranged on the clamping post 52, which is located beside the clamping eave 521. The arrangement of the groove 53 can save materials and reduce weight.

[0063] As shown in FIG. 1, Figure 4 In one embodiment, the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, and the radius of the first corner 320 is greater than the radius of the second corner 330. Specifically, on one side of the non-splicing edge of the bottom plate 40, the plastic edge strip 50 is wrapped along the second bending structure 41 and clamped into the second bending structure 41. In the embodiment of three-edge bending, the splicing edge of the main screen assembly 10 does not need to be wrapped, the edge strip 50 can be bent and deformed, and the corner can be wrapped along the corner of the bottom plate 40. The corner of the non-splicing edge of the bottom plate 40 is larger than the corner of the splicing edge, which can reduce the internal stress of the edge strip 50 after deformation, and avoid stress cracking under high and low temperature cyclic cold and hot impact. The corner of the splicing edge of the bottom plate 40 and the main screen assembly 10 is the first corner 320, which can avoid excessive gap at the first corner 320 after splicing with the main screen assembly 10, affecting the appearance. The radius of the second corner 330 is large, and the large angle is convenient for installation.

[0064] As shown in FIG. 1, Figure 9 and Figure 10 In one embodiment, the bottom plate 40 is bent into a first corner 320 at the splicing corner, and the first bending structure 31 is provided with a notch 34 at the two first corners 320 (see Figure 5 ), which can accommodate the edge strip 50, so that the edge strip 50 extends from the notch 34, which can solve the gap problem caused by the splicing of the secondary screen assembly 300 and the main screen assembly 10 without increasing the cost.

[0065] In one embodiment, the panel 30 also has the function of sensing touch, for example, when the panel 30 is used as an electronic blackboard, a finger can touch the panel 30 to control the electronic blackboard to perform control operations.

[0066] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, and the two second corners 330 are adjacent, one of the first corners 320 is located at the intersection of the first side edge and the second side edge, and the other first corner 320 is located at the intersection of the first side edge and the fourth side edge, one of the second corners 330 is located at the intersection of the second side edge and the third side edge, and the other second corner 330 is located at the intersection of the third side edge and the fourth side edge; the radius of the first corner 320 is greater than the radius of the second corner 330; the depth of the card slot 51 is 68.4mm, and no groove 53 is arranged on the card table 52.

[0067] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; in the two corners of the sub-screen assembly 300 and the main screen assembly 10, such as Figure 10 In the example, the bottom plate 40 is folded out at the first corner 320 at the splicing corner, the first bending structure 31 is provided with a notch 34 at the two first corners 320, and the edge sealing strip 50 can be extended from the notch 34; the depth of the card slot 51 is 68.4mm, and no groove 53 is arranged on the card table 52.

[0068] Optionally, in one example, the inner walls of the two sides of the card slot 51 are provided with bosses 511, the card slot 51 adopts double-sided bosses 511, and the bosses 511 on the inner walls of the two sides of the card slot 51 are arranged in a dog-tooth shape. The bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, the radius of the first corner 320 is greater than the radius of the second corner 330, and the side edge between the two second corners 330 is used to connect the main screen assembly 10; the depth of the card slot 51 is 68.4mm, and no groove 53 is arranged on the card table 52.

[0069] Optionally, in one example, the inner walls of the two sides of the card slot 51 are provided with bosses 511 and arranged in a dog-tooth shape. The bottom plate 40 is bent out at the first corner 320 at the splicing corner, the first bending structure 31 is provided with a notch at the two first corners 320, the notch can accommodate the edge sealing strip 50, and the edge sealing strip 50 can be extended from the notch; the depth of the card slot 51 is 68.4mm, and no groove 53 is arranged on the card table 52.

[0070] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, the radius of the first corner 320 is greater than the radius of the second corner 330, and the side between the two second corners 330 is used to connect the main screen assembly 10; the depth of the card slot 51 is 48mm, and the card table 52 is provided with a groove 53.

[0071] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, the radius of the first corner 320 is greater than the radius of the second corner 330, and the side between the two second corners 330 is used to connect the main screen assembly 10; the depth of the card slot 51 is 48mm, and the card table 52 is provided with a groove 53.

[0072] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, the radius of the first corner 320 is greater than the radius of the second corner 330, and the side between the two second corners 330 is used to connect the main screen assembly 10; the depth of the card slot 51 is 48mm, and the card table 52 is provided with a groove 53.

[0073] Optionally, in one example, the single-side inner wall of the card slot 51 is provided with a boss 511; the bottom plate 40 is provided with two first corners 320 and two second corners 330, the two first corners 320 are adjacent, the two second corners 330 are adjacent, the radius of the first corner 320 is greater than the radius of the second corner 330, and the side between the two second corners 330 is used to connect the main screen assembly 10; the depth of the card slot 51 is 48mm, and the card table 52 is provided with a groove 53.

[0074] It can be understood that in some other embodiments, three side edges of the panel can be bent towards the bottom plate to form a first bent structure, one side edge of the bottom plate can be bent towards the panel to form a second bent structure, and the first bent structure and the second bent structure are spliced, that is, the panel is bent by three edges, and the bottom plate is bent by one edge. Similarly, the panel can also be bent by two edges, and the bottom plate is bent by two edges. In summary, the side edge of the panel is bent towards the bottom plate to form a first bent structure, the side edge of the bottom plate is bent towards the panel to form a second bent structure, the first bent structure and the second bent structure are spliced, one of the first bent structure and the second bent structure is inserted into the clamping groove, and the other of the first bent structure and the second bent structure passes through the gap between the two ends of the edge sealing strip, so that the edge sealing strip can replace the metal frame in the related art.

[0075] The production and processing flow of the secondary screen assembly 300 of the embodiment of the present disclosure is as follows: the edge sealing strip 50 clamping groove 51 is sleeved on the second bent structure 41 of the bottom plate 40; the glue is brushed on the inner surface of the bottom surface of the bottom plate 40; the support layer 60 is placed on the inner surface of the bottom surface of the bottom plate 40 brushed with glue, so that the lower surface of the support layer 60 is in contact with the glue of the inner surface of the bottom surface; the glue is brushed on the upper surface of the support layer 60; the panel 30 is placed in the clamping table 52, so that the glue on the upper surface of the support layer 60 is in contact with the lower surface of the panel 30; and the composite treatment is performed.

[0076] The design of the present disclosure focuses on using the flexible material edge sealing strip 50 which can be bent and deformed as a connecting piece to connect the bottom plate 40 and the panel 30, and using the adhesive to replace the metal frame in the related art to simplify the assembly process. The transverse boss 511 provided in the clamping groove 51 can be extruded with the bent edge of the bottom plate 40 to realize interference fit, and the boss 511 keeps a certain distance from the end of the clamping groove 51, which does not affect the insertion efficiency; the notch of the first bent structure 31 can accommodate the edge sealing strip 50, and the notch can accommodate the edge sealing strip 50, so that the edge sealing strip 50 extends from the notch. In this way, the gap problem caused by the splicing of the secondary screen assembly 300 and the primary screen assembly 10 can be solved without increasing the cost.

[0077] Another embodiment of the present disclosure also provides a smart blackboard, which comprises a primary screen assembly 10 and a secondary screen assembly 300, and the secondary screen assembly is connected to the primary screen assembly 10.

[0078] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present disclosure, but not to limit them; under the idea of the present disclosure, the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present disclosure as described above, which are not provided in details for simplicity; although the present disclosure has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A secondary screen component, characterized in that, include: panel; The base plate has a first bending structure formed by bending the side edge of the panel towards the base plate, and a second bending structure formed by bending the side edge of the base plate towards the panel. The first bending structure and the second bending structure are spliced ​​together. An edge banding strip is connected between the panel and the base plate. The edge banding strip has a slot. One of the first bending structure and the second bending structure is inserted into the slot. The other of the first bending structure and the second bending structure passes through the gap between the two ends of the edge banding strip. The panel, the base plate and the edge banding strip are arranged to form an accommodating space. A support layer is located within the accommodating space and is connected between the panel and the base plate; The adhesive layer includes a first adhesive layer and a second adhesive layer. The support layer and the panel are bonded together by the first adhesive layer, and the support layer and the base plate are bonded together by the second adhesive layer. The adhesive layer is located in the accommodating space. The panel is rectangular and includes a first side edge, a second side edge, a third side edge and a fourth side edge connected in sequence. The first side edge is bent toward the base plate to form the first bent structure. The second bending structure is provided corresponding to the second side edge, the third side edge, and the fourth side edge; The second bending structure is inserted into the slot, and the first bending structure passes through the gap between the two ends of the sealing strip; The panel is disposed on the edge banding strip and faces away from the opening of the card slot.

2. The secondary screen assembly according to claim 1, characterized in that, The edge banding strip has a card holder on the side facing away from the opening of the card slot; The panel is disposed on the card holder.

3. The secondary screen assembly according to claim 2, characterized in that, The card holder has a card rim on its outer side, and the card rim protrudes from the card holder. The second side edge, the third side edge, and the fourth side edge respectively abut against the camber.

4. The secondary screen assembly according to claim 1, characterized in that, A boss is provided on one side of the inner wall of the card slot; The second bending structure abuts against the boss.

5. The secondary screen assembly according to claim 4, characterized in that, The inner wall of the protrusion is provided with an inclined surface to facilitate the insertion of the second bending structure, and the inclined surface is located at the opening of the slot.

6. The secondary screen assembly according to claim 3, characterized in that, The inner walls on both sides of the card slot are provided with protrusions, which are arranged in a dog-tooth pattern. The card platform is provided with a groove, which is located beside the card eaves; The second bending structure abuts against the boss.

7. The secondary screen assembly according to claim 1, characterized in that, The second bending structure has two first corners and two second corners. One of the first corners is located at the junction of the first side edge and the second side edge, and the other first corner is located at the junction of the first side edge and the fourth side edge. One of the second corners is located at the junction of the second side edge and the third side edge, and the other second corner is located at the junction of the third side edge and the fourth side edge. The radius of the first corner is smaller than the radius of the second corner.

8. The secondary screen assembly according to claim 1, characterized in that, The first bending structure has a notch at one end near the second bending structure for inserting the edge banding strip.

9. A smart blackboard, characterized in that, It includes a main screen component and a secondary screen component as described in any one of claims 1 to 8, wherein the secondary screen component is connected to the main screen component.

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