Auxiliary screen assembly and intelligent blackboard with same

Abstract

The embodiment of the utility model discloses an auxiliary screen assembly and an intelligent blackboard with the auxiliary screen assembly. The auxiliary screen assembly comprises a first metal plate panel and a second metal plate panel, and the first metal plate panel and the second metal plate panel are provided with a first flange and a second flange which are bent in the same direction respectively. According to the embodiment, the notches are formed in the top corners of the two ends of one edge of the two metal plate panels respectively, and the buckling notches are sealed through the notch sealing pieces after the two metal plate panels are installed; in the embodiment of the utility model, the end part of the first flange intersected with the first notch is provided with a fillet structure, or a turn-back flange can be arranged between the second flange intersected with the second notch and the second panel main body; the auxiliary screen assembly can prevent the edge and the vertex angle of the metal plate panel from cutting the body, can replace an existing adhesive tape edge sealing or metal plate frame edge covering scheme, solves the technical problems that due to the adoption of the scheme, assembling is difficult, transportation is inconvenient and the like, can be used for the left side and the right side of main screen assemblies of different types, and is high in compatibility.

Description

Technical Field

[0001] The utility model relates to the technical field of smart blackboards, and in particular to a secondary screen component and a smart blackboard with the secondary screen component. Background Art

[0002] With the development of technology, smart blackboards have appeared in teaching environments.

[0003] A smart blackboard is a multimedia teaching device that uses capacitive touch technology or infrared touch technology to achieve interactive touch, drawing and writing. It usually includes a main screen with a secondary screen on one or both sides of the main screen. In this way, while the main screen can meet the multimedia display function, the secondary screen also has the function of traditional chalk blackboard writing. It can adapt to the usage habits of different users and meet more teaching needs.

[0004] In the relevant scheme, the secondary screen mainly includes a front sheet metal panel and a rear sheet metal bottom plate which are relatively arranged, and a honeycomb interlayer is arranged between the two. Considering the safety requirements of the use environment of educational products, the secondary screen is usually further sealed with rubber strips or sheet metal frame wrapping to prevent safety risks such as cutting hands by the folded edges of sheet metal.

[0005] However, the above solution has the problems of difficult assembly of edge sealing with rubber strips, easy deformation of sheet metal edge sealing, and high production cost. Utility Model Content

[0006] In response to at least one aspect of the above-mentioned technical problems, an embodiment of the present application provides a secondary screen assembly and a smart blackboard having the secondary screen assembly. In this embodiment, by setting the end of the first flange of the first outer-buckled sheet metal panel to a rounded structure or forming a return flange between the second inner-buckled flange and the second panel body, and installing notch closures on the upper and lower ends away from the side of the main screen assembly during installation, it can prevent the edges and top corners of the sheet metal panel from being sharp and easily cutting the body, thereby meeting the safety requirements of the use environment of educational products, thereby replacing the current rubber strip edge sealing or sheet metal frame edging solutions, and solving technical problems such as assembly difficulty, transportation inconvenience, and high production cost caused by the use of the above solutions.

[0007] In a first aspect, an embodiment of the present application provides a secondary screen assembly, the secondary screen assembly comprising a first sheet metal panel and a second sheet metal panel that are relatively arranged and fixedly installed, and a gap sealing member;

[0008] The first sheet metal panel comprises a first panel body, four sides of which are provided with first flanges bent in the same direction, and the second sheet metal panel comprises a second panel body, four sides of which are provided with second flanges bent in the same direction, so that the first sheet metal panel and the second sheet metal panel are buckled and installed, and the first flange is located on the outside of the second flange;

[0009] A first notch is provided at the vertex corners at both ends of one side of the first sheet metal panel, and a second notch is provided at the vertex corners at both ends of one side of the second sheet metal panel, so that when the first sheet metal panel and the second sheet metal panel are buckled and installed, the first notch and the second notch are buckled correspondingly to form a buckled notch, and the notch closing member is used to close the buckled notch;

[0010] Wherein, the end of the first flange intersecting the first notch along its height direction is a rounded structure; or,

[0011] A return flange protruding outward is provided between the second flange and the second panel body intersecting the second notch.

[0012] In one embodiment, preferably, the gap sealing member includes a rounded curved surface portion, and at least one end of the rounded curved surface portion along a first direction is provided with a mounting plane portion, the first direction being the direction in which the first sheet metal panel and the second sheet metal panel are buckled and mounted, and the mounting plane portion extends perpendicular to the first direction, so that the mounting plane portion is used to abut against the first panel body or the second panel body;

[0013] Furthermore, the installation plane portion is provided with an installation through hole for fastening installation.

[0014] In one embodiment, preferably, the rounded curved surface portion is provided with limiting plug-in portions at both ends along the direction in which the rounded corners extend, and along the circumferential direction of the first direction, the surface of the limiting plug-in portion is concave relative to the surface of the rounded curved surface portion;

[0015] So that after the limiting plug-in part is inserted into the snap-fit ​​notch, the positioning step formed between the rounded curved surface part and the limiting plug-in part abuts against the end of the first flange, and the surface of the rounded curved surface part is flush with the surface of the first flange.

[0016] In one embodiment, preferably, the installation plane portion is provided at one end of the rounded curved surface portion along the first direction;

[0017] The first notch is formed by cutting a pair of intersecting first flanges along the length direction thereof, and the ends of a pair of second flanges intersecting the second notch along the length direction thereof are retracted into the ends of the first flanges;

[0018] The gap sealing member is inserted into the engaging gap along the first direction, and the end of the limiting plug-in portion along its extension direction abuts against the end of the second flange in the length direction.

[0019] In one embodiment, preferably, when the end of the first flange intersecting the first notch along the height direction thereof is in a rounded structure, the rounded structure is achieved by bending the end of the first flange along the height direction thereof inwardly back into the flange;

[0020] Wherein, a clamping boss is provided on the surface of the position-limiting plug-in portion facing the first flange, and the clamping boss is used to clamp with the end of the return flange.

[0021] In one embodiment, preferably, the return edge includes a return dead edge.

[0022] In one embodiment, preferably, when a return flange protruding outward is provided between the second flange and the second panel body intersecting at the second notch, the return flange includes a dead edge flange.

[0023] In a second aspect, an embodiment of the present application provides a smart blackboard, wherein the smart blackboard includes a main screen component and a secondary screen component that are spliced ​​and installed;

[0024] Wherein, the secondary screen assembly comprises a first sheet metal panel and a second sheet metal panel which are arranged relatively and fixedly installed, and a gap sealing member;

[0025] The first sheet metal panel comprises a first panel body, four sides of which are provided with first flanges bent in the same direction, and the second sheet metal panel comprises a second panel body, four sides of which are provided with second flanges bent in the same direction, so that the first sheet metal panel and the second sheet metal panel are buckled and installed, and the first flange is located on the outside of the second flange;

[0026] A first notch is provided at the vertex corners at both ends of one side of the first sheet metal panel, and a second notch is provided at the vertex corners at both ends of one side of the second sheet metal panel, so that when the first sheet metal panel and the second sheet metal panel are buckled and installed, the first notch and the second notch are buckled correspondingly to form a buckled notch, and the notch closing member is used to close the buckled notch;

[0027] Wherein, the end of the first flange intersecting the first notch along its height direction is a rounded structure; or,

[0028] A return flange protruding outward is provided between the second flange and the second panel body intersecting the second notch.

[0029] In one embodiment, preferably, the gap sealing member includes a rounded curved surface portion, and at least one end of the rounded curved surface portion along a first direction is provided with a mounting plane portion, the first direction being the direction in which the first sheet metal panel and the second sheet metal panel are buckled and mounted, and the mounting plane portion extends perpendicular to the first direction, so that the mounting plane portion is used to abut against the first panel body or the second panel body;

[0030] Furthermore, the installation plane portion is provided with an installation through hole for fastening installation.

[0031] In one embodiment, preferably, the rounded curved surface portion is provided with limiting plug-in portions at both ends along the direction in which the rounded corners extend, and along the circumferential direction of the first direction, the surface of the limiting plug-in portion is concave relative to the surface of the rounded curved surface portion;

[0032] So that after the limiting plug-in part is inserted into the snap-fit ​​notch, the positioning step formed between the rounded curved surface part and the limiting plug-in part abuts against the end of the first flange, and the surface of the rounded curved surface part is flush with the surface of the first flange.

[0033] In one embodiment, preferably, the installation plane portion is provided at one end of the rounded curved surface portion along the first direction;

[0034] The first notch is formed by cutting a pair of intersecting first flanges along the length direction thereof, and the ends of a pair of second flanges intersecting the second notch along the length direction thereof are retracted into the ends of the first flanges;

[0035] The gap sealing member is inserted into the engaging gap along the first direction, and the end of the limiting plug-in portion along its extension direction abuts against the end of the second flange in the length direction.

[0036] In one embodiment, preferably, when the end of the first flange intersecting the first notch along the height direction thereof is in a rounded structure, the rounded structure is achieved by bending the end of the first flange along the height direction thereof inwardly back into the flange;

[0037] Wherein, a clamping boss is provided on the surface of the position-limiting plug-in portion facing the first flange, and the clamping boss is used to clamp with the end of the return flange.

[0038] In one embodiment, preferably, the return edge includes a return dead edge.

[0039] In one embodiment, preferably, when a return flange protruding outward is provided between the second flange and the second panel body intersecting at the second notch, the return flange includes a dead edge flange.

[0040] In one embodiment, preferably, the smart blackboard further includes a first mounting component;

[0041] Wherein, the first installation component includes:

[0042] A wall-mounted connector, fixed to the second panel body, the wall-mounted connector is used for wall-mounted installation;

[0043] A side sealing plate is fixed to the second panel body, the side sealing plate is arranged along the vertical direction, and the side sealing plate is arranged at the vertical edge of the auxiliary screen assembly away from the main screen assembly;

[0044] A first guide profile is fixed to the second panel body, the first guide profile is arranged along the vertical direction, and the first guide profile is arranged at a vertical edge of the auxiliary screen assembly close to the main screen assembly;

[0045] A lower plug-in fixing member fixed to the bottom end of the first guide profile, the lower plug-in fixing member comprising a first plug-in column for inserting into a first pair of plug-in holes of the main screen assembly;

[0046] The main-sub-screen transition decorative piece is fixed to the top end of the first guide profile, and the main-sub-screen transition decorative piece includes a transition cover, a second plug-in column and a pull buckle; wherein, the second plug-in column is used to insert into the second docking socket of the main screen assembly, and the pull buckle is used to be installed with the pull buckle connector of the main screen assembly, and the transition cover abuts against the top end where the sub-screen assembly is connected to the main screen assembly.

[0047] In one embodiment, preferably, the smart blackboard further includes a second mounting component;

[0048] Wherein, the second installation component comprises:

[0049] A wall-mounted connector, fixed to the second panel body, the wall-mounted connector is used for wall-mounted installation;

[0050] A side sealing plate is fixed to the second panel body, the side sealing plate is arranged along the vertical direction, and the side sealing plate is arranged at the vertical edge of the auxiliary screen assembly away from the main screen assembly;

[0051] A second guide profile is fixed to the second panel body, the second guide profile is arranged in a vertical direction, and the second guide profile is arranged on a vertical side of the auxiliary screen assembly close to the main screen assembly, wherein the second guide profile is provided with a hanging nail, and the hanging nail is used to be hung in a hanging groove of the main screen assembly;

[0052] The auxiliary screen upper profile is arranged at the top of the auxiliary screen assembly and extends along the length direction of the top of the auxiliary screen assembly. The auxiliary screen upper profile is fastened to the second panel body. The auxiliary screen upper profile is fixedly installed with the main screen assembly through the main and auxiliary screen connecting sheet metal;

[0053] The auxiliary screen upper profile decorative cover is installed at the auxiliary screen upper profile notch at the upper end of the auxiliary screen assembly away from the main screen assembly.

[0054] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0055] An embodiment of the present application provides a sub-screen assembly and a smart blackboard having the sub-screen assembly. The sub-screen assembly includes a first sheet metal panel and a second sheet metal panel that are relatively arranged and fixedly installed. The four sides of the first panel body in the first sheet metal panel are provided with a first flange bent in the same direction. Similarly, the four sides of the second panel body in the second sheet metal panel are provided with a second flange bent in the same direction. Thus, the two sheet metal panels can be installed in a snap-fit ​​manner with the first flange on the outside and the second flange on the inside.

[0056] Among them, in order to prevent the edges of thinner sheet metal panels from cutting the body due to sharp edges, on the one hand, this embodiment simultaneously sets notches at the top corners of both ends of one side of the two sheet metal panels, namely the first notch and the second notch. In this way, after a pair of first notches and a pair of second notches are installed respectively correspondingly, the snap-fitting notches can be closed by notch closing members to prevent the upper and lower top corners of the vertical side of the secondary screen assembly away from the main screen assembly from cutting the body, because the side without a notch does not need to be protected because it needs to be connected to the main screen assembly; on the other hand, this embodiment also sets the end of the first flange located on the outside and intersecting the first notch along its height direction to a rounded structure, and the rounded structure can be, for example, formed by bending inward. that is, except for a first flange that needs to abut against the main screen assembly, the ends of the remaining three first flanges along their height direction are all provided with rounded corner structures, so that the three edges of the auxiliary screen assembly except for the edge that docks with the main screen assembly can be prevented from cutting the body, because the one edge without a notch does not need to be protected because it needs to dock with the main screen assembly; alternatively, in this embodiment, a return flange can be provided between the second flange located on the inner side and intersecting with the second notch and the second panel body, so that the end of the first flange can be protected by the return flange, which can also prevent the three edges of the auxiliary screen assembly except for the edge that docks with the main screen assembly from cutting the body.

[0057] In other words, for the three sides of the secondary screen assembly that are not connected to the main screen assembly, this embodiment sets the ends of the first outer flange along its height direction to a rounded structure, or sets a return flange between the second inner flange and the second panel body; at the same time, for the two top corners of the secondary screen assembly that are not connected to the main screen assembly, this embodiment sets them in the form of a notch (i.e., a snap-fit ​​notch), and then the notch closure can be installed. The notch closure is installed in the snap-fit ​​notch after the two sheet metal panels are snap-fitted to form a snap-fit ​​notch, and can be installed as needed according to actual needs. In this way, the edges and top corners of the sheet metal panels can be prevented from cutting the body, and there is no need to use rubber strips for edge sealing or sheet metal frame edging, which solves the technical problems of assembly difficulty, transportation inconvenience, high production cost, etc. caused by the use of the above scheme. In addition, it can be understood that by rotating the secondary screen assembly 180 degrees with the direction perpendicular to the sheet metal panel as the axis, the secondary screen assembly can be used on the left and right sides of the main screen assembly of different models at the same time, and has strong compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 This is a schematic diagram of the structure of the first sheet metal panel in the embodiment of the present application, wherein: Figure 1 The top corners of the upper and lower ends of the left side of the first sheet metal panel are respectively provided with first notches, and the three first flanges of the upper side, the left side and the lower side of the first sheet metal panel are provided with return flanges.

[0060] Figure 2 This is a schematic diagram of the structure of the second sheet metal panel in the embodiment of the present application, wherein: Figure 2 Second notches are respectively provided at the top corners of the left and right ends of an upper side of the second sheet metal panel.

[0061] Figure 3 This is a structural schematic diagram of the first sheet metal panel and the second sheet metal panel being buckled and installed along a first direction in an embodiment of the present application.

[0062] Figure 4 It is a schematic diagram of the structure of the gap sealing member described in the embodiment of the present application.

[0063] Figure 5 This is a schematic structural diagram of the gap sealing member described in the embodiment of the present application from another perspective.

[0064] Figure 6This is a schematic diagram of the structure after the first notch and the second notch are installed correspondingly in the embodiment of the present application.

[0065] Figure 7 for Figure 6 Schematic diagram of the structure after the gap sealing piece is installed in the gap.

[0066] Figure 8 It is a schematic diagram of the structure of the clamping step and the end of the return flange in the embodiment of the present application.

[0067] Fig. 9 This is a structural schematic diagram of the first mounting component installed on the secondary screen component in an embodiment of the present application.

[0068] Fig.10 for Fig. 9 Schematic diagram of the structure of the docking installation of the secondary screen component and the main screen component.

[0069] Fig.11 This is a structural schematic diagram of the second mounting member installed on the secondary screen assembly in an embodiment of the present application.

[0070] Fig.12 for Fig.11 Schematic diagram of the structure of the docking installation of the secondary screen component and the main screen component.

[0071] Fig.13 This is a structural schematic diagram of another embodiment of the present application in which the first sheet metal panel and the second sheet metal panel are buckled and installed along a first direction.

[0072] Wherein, the reference numerals are:

[0073] 10-first sheet metal panel, 11-first panel body, 12-first flange, 13-first notch, 14-return flange,

[0074] 20-second sheet metal panel, 21-second panel body, 22-second flange, 23-second notch, 24-return flange,

[0075] 30-gap closure, 31-rounded curved surface, 32-installation plane, 33-limiting plug-in part, 34-positioning step, 35-clamping step,

[0076] 321-Mounting through hole,

[0077] 40-Supporting interlayer,

[0078] 50-Snap-fit ​​notch,

[0079] 100-secondary screen component, 200-main screen component,

[0080] 201-second docking jack, 202-pull buckle connector, 203-hanging slot, 204-main and auxiliary screen connection sheet metal,

[0081] 301- wall-mounted connector, 302- side sealing plate, 303- first guide profile, 304- lower plug-in fixing piece, 305- main and auxiliary screen transition decoration piece, 306- second guide profile, 307- auxiliary screen upper profile, 308- auxiliary screen upper profile decorative cover,

[0082] 3051-transition cover, 3052-second plug-in column, 3053-pull buckle,

[0083] 3061-Hanging nail,

[0084] X - first direction. DETAILED DESCRIPTION

[0085] In order to better understand the above technical solution, the example embodiments of the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited to the exemplary embodiments described here.

[0086] Figure 1 is a schematic diagram of the structure of the first sheet metal panel, Figure 2 is a schematic diagram of the structure of the second sheet metal panel. Figure 3 This is a schematic diagram of the structure where the first sheet metal panel and the second sheet metal panel are fastened and installed along the first direction. Figure 1 to Figure 3 A sub-screen assembly, the sub-screen assembly includes a first sheet metal panel 10 and a second sheet metal panel 20 which are arranged and fixedly installed relative to each other, and a gap closing member 30; wherein the first sheet metal panel 10 includes a first panel body 11, and the four sides of the first panel body 11 are provided with a first flange 12 bent in the same direction, and the second sheet metal panel 20 includes a second panel body 21, and the four sides of the second panel body 21 are provided with a second flange 22 bent in the same direction, so that the first sheet metal panel 10 and the second sheet metal panel 20 are buckled and installed, and the first flange 12 is located on the outside of the second flange 22; the first sheet metal panel 1 A first notch 13 is provided at the vertex angles at both ends of one side of the second sheet metal panel 20, and a second notch 23 is provided at the vertex angles at both ends of one side of the second sheet metal panel 20, so that when the first sheet metal panel 10 and the second sheet metal panel 20 are buckled and installed, the first notch 13 and the second notch 23 are correspondingly buckled to form a buckling notch 50, and the notch closing member 30 is used to close the buckling notch 50; wherein, the end of the first flange 12 intersecting the first notch 13 along its height direction is a rounded structure; or, a back-turned flange 24 protruding outward is provided between the second flange 22 intersecting the second notch 23 and the second panel body 21.

[0087] In general, this embodiment provides rounded corner structures on the three sides of the secondary screen assembly that are not connected to the main screen assembly, and provides gap sealing parts at the two top corner gaps where the secondary screen assembly is not connected to the main screen assembly, thereby preventing the edges and top corners of the sheet metal panel of the secondary screen assembly from cutting the body. It can replace the current edge sealing with rubber strips or sheet metal frame edging solutions, and solves technical problems such as assembly difficulty, inconvenient transportation, and high production cost caused by the use of the above solutions.

[0088] Specifically, the secondary screen assembly of this embodiment includes a first sheet metal panel and a second sheet metal panel, and the two sheet metal panels are arranged opposite to each other and fixedly installed.

[0089] Among them, the first sheet metal panel includes a first panel body, the first panel body is, for example, a plane, and then, the four sides of the first panel body are provided with first flanges by bending, and the four first flanges are bent in the same direction; similarly, the second sheet metal panel includes a second panel body, the second panel body is, for example, also a plane, and then, the four sides of the second panel body are provided with second flanges by bending, and the four second flanges are also bent in the same direction; it can be understood that in this way, the first sheet metal panel and the second sheet metal panel can be installed in a buckled manner along the first direction X (see Figure 3 ), and after snap-fit ​​installation, the first flange is located on the outside and the second flange is located on the inside.

[0090] Among them, the first sheet metal panel has a first notch at the top corners of both ends of one side, and similarly, the second sheet metal panel has a second notch at the top corners of both ends of one side; at this time, it can be understood that when snap-fitting and installing, a pair of first notches and a pair of second notches should be snap-fitted to form snap-fitting notches 50 (see Figure 6 ), so that after the first sheet metal panel and the second sheet metal panel are fastened and installed, a pair of fastening notches 50 are formed at both ends of one side thereof, and then, a pair of notch closing members can be used to close the pair of fastening notches respectively.

[0091] At the same time, for the first sheet metal panel, this embodiment also sets a rounded structure at the end of the first flange intersecting with the first notch along the first flange height direction; thus, the rounded structure of the first flange end will not cut the body.

[0092] In other words, it can be understood that for a pair of first notches at both ends of one of the sides of the first sheet metal panel, they are formed by the intersection of three first flanges in pairs. In this embodiment, rounded corner structures are respectively provided at the ends of the three first flanges, while the end of the remaining other first flange is not provided with a rounded corner structure; it can be understood that the first flange without a rounded corner structure can be used to connect with the main screen assembly when the auxiliary screen assembly is assembled with the main screen assembly. At this time, the auxiliary screen assembly is provided with the above-mentioned notch closing members at the two top corners away from the main screen assembly.

[0093] Among them, it should be noted that the gap closing piece is installed in the snap-fitting gap after the two sheet metal panels are snap-fitted and installed, so that it can be plugged in when used, or it can be used according to actual needs.

[0094] It can be seen that through the above-mentioned arrangement, after the secondary screen assembly of this embodiment is docked and installed with the main screen assembly through an edge without a rounded corner structure, the remaining three edges are all provided with rounded corner structures, and notch closing members are provided at the two top corners away from the main screen assembly. In this way, all edges and top corners of the secondary screen assembly except for one edge and a pair of top corners that need to be docked with the main screen assembly can be protected to prevent them from cutting the body. In addition, there is no need to set additional rubber strips for edge sealing or sheet metal frame edging, which reduces production costs and facilitates transportation.

[0095] It should be noted that, in order to ensure aesthetics, when in use, the first sheet metal panel can be used as the front panel, and the second sheet metal panel can be used as the back panel.

[0096] Among them, it can be understood that the rounded corner structure of the end of the first flange along its height direction mentioned above can be realized in a simple way by bending the first flange 12 inwardly to form a return flange 14. The height of the return flange 14 should be less than the height of the first flange 12. The return flange is, for example, a return flange bent inward 180 degrees. Of course, according to actual needs, the rounded corner structure can also be realized by curling, grinding and passivation, etc., and this embodiment does not limit this.

[0097] In addition, in order to prevent the three sides of the secondary screen assembly from cutting the body, in another solution, the above-mentioned rounded corner structure may not be provided on the first flange 12. Fig.13 Instead, an outwardly protruding return flange 24 can be provided between the second flange 22 intersecting the second notch 23 and the second panel body 21. The return flange 24 is, for example, a dead edge flange. Thus, it can be understood that after the two sheet metal panels are snapped together and installed, the end of the first flange 12 is adjacent to the return flange 24, and the protruding return flange 24 will protect the end of the first flange 12 and also prevent cuts to the body.

[0098] Of course, at this time, the first sheet metal panel can be used as the rear panel, and the second sheet metal panel can be used as the front panel.

[0099] An embodiment of the present application provides a sub-screen assembly and a smart blackboard having the sub-screen assembly. The sub-screen assembly includes a first sheet metal panel and a second sheet metal panel that are relatively arranged and fixedly installed. The four sides of the first panel body in the first sheet metal panel are provided with a first flange bent in the same direction. Similarly, the four sides of the second panel body in the second sheet metal panel are provided with a second flange bent in the same direction. Thus, the two sheet metal panels can be installed in a snap-fit ​​manner with the first flange on the outside and the second flange on the inside.

[0100] Among them, in order to prevent the edge of the thinner sheet metal panel from cutting the body due to its sharp edge, on the one hand, this embodiment simultaneously sets notches at the top corners of both ends of one side of the two sheet metal panels, namely the first notch and the second notch. In this way, after a pair of first notches and a pair of second notches are installed respectively correspondingly, the snap-fitting notches can be closed by the notch sealing parts to prevent the upper and lower top corners of the vertical side of the auxiliary screen component away from the main screen component from cutting the body, because the side without the notch does not need to be protected because it needs to be connected with the main screen component; on the other hand, this embodiment also provides an inwardly bent return turn along the end of the first flange located on the outside and intersecting the first notch in the height direction. That is to say, except for a first flange that needs to be in contact with the main screen assembly, the remaining three first flanges are all bent inwardly with return flanges. In this way, the three edges of the auxiliary screen assembly except for the edge that is connected to the main screen assembly can be prevented from cutting the body, because the edge without a notch does not need to be protected because it needs to be connected to the main screen assembly; alternatively, this embodiment can also provide a return flange between the second flange located on the inner side and intersecting at the second notch and the second panel body. In this way, the end of the first flange can be protected by the return flange, which can also prevent the three edges of the auxiliary screen assembly except for the edge that is connected to the main screen assembly from cutting the body.

[0101] In other words, for the three sides of the auxiliary screen assembly that are not connected to the main screen assembly, the present embodiment sets a return flange on the outer first flange, or sets a return flange between the inner second flange and the second panel body; at the same time, for the two top corners of the auxiliary screen assembly that are not connected to the main screen assembly, the present embodiment sets them in the form of a notch (i.e., a snap-fitting notch), and then the notch closing piece can be installed. The notch closing piece is plugged into and installed in the snap-fitting notch after the two sheet metal panels are snap-fitted and installed to form a snap-fitting notch, and can be plugged in and installed as needed according to actual needs, thereby preventing the edges and top corners of the sheet metal panels from cutting the body, and can replace the current edge sealing with rubber strips or sheet metal frame edging solutions, solving technical problems such as assembly difficulty, inconvenient transportation, and high production costs caused by the use of the above solutions.

[0102] In addition, it can be understood that by rotating the secondary screen assembly 180 degrees with the direction perpendicular to the sheet metal panel as the axis, the secondary screen assembly can be simultaneously docked on the left and right sides of the main screen assembly of different models, with strong compatibility.

[0103] Regarding the fixed installation of the first sheet metal panel 10 and the second sheet metal panel 20 in the secondary screen assembly, in one possible implementation, see Figure 3 The secondary screen assembly also includes a supporting interlayer 40, which is arranged between the first panel body 11 and the second panel body 21; wherein the supporting interlayer 40 and the first panel body 11, and the supporting interlayer 40 and the second panel body 21 are respectively bonded and fixed to fix the first sheet metal panel 10 and the second sheet metal panel 20.

[0104] That is, this embodiment provides a possible structure for fixing and installing two sheet metal panels.

[0105] For example, a supporting interlayer can be set between the two panel bodies. That is, after the first sheet metal panel and the second sheet metal panel are snap-fitted and installed, a supporting interlayer can be set in the space between the two panel bodies, and the supporting interlayer can support the two panel bodies; and the two opposite surfaces of the supporting interlayer can be bonded and fixed to the inner surface of the first panel body and the inner surface of the second panel body respectively by adhesive, so that the two sheet metal panels are fixedly installed.

[0106] It is understandable that, in order to reduce weight, the supporting interlayer may, for example, be in the form of a honeycomb structure, ie, a honeycomb interlayer, on a surface perpendicular to the first direction.

[0107] In one possible implementation, continue to refer to Figure 3 After the first sheet metal panel 10 and the second sheet metal panel 20 are buckled and installed through the supporting interlayer 40, the height of the first flange 12 should be lower than the plane where the second panel body 21 is located to prevent the first flange 12 from warping.

[0108] Regarding the above-mentioned gap closing piece 30, in one possible implementation manner, the gap closing piece 30 includes a rounded curved surface portion 31, and a mounting plane portion 32 is provided at at least one end of the rounded curved surface portion 31 along a first direction X, the first direction X is the direction in which the first sheet metal panel 10 and the second sheet metal panel 20 are buckled and installed, and the mounting plane portion 32 extends perpendicular to the first direction X, so that the mounting plane portion 32 is used to abut against the first panel body 11 or the second panel body 211; and the mounting plane portion 32 is provided with a mounting through hole 321 for fastening installation.

[0109] That is, combined Figure 4 , Figure 5 and Figure 7 , this embodiment provides a possible structure of the gap sealing member.

[0110] Among them, firstly, the gap closing piece should include a rounded curved surface portion. It can be understood that after installation, the rounded curved surface portion can make the top corner of the gap of the secondary screen assembly present a rounded structure, which will not cut the body.

[0111] Secondly, in order to ensure the fixed installation of the gap sealing member, the present embodiment further provides a mounting plane portion at at least one end of the rounded curved surface portion along the first direction, such as Figure 4 As shown, for example, a mounting plane portion may be provided only at one end of the rounded curved surface portion along the first direction, and the mounting plane portion may, for example, specifically extend along a plane perpendicular to the first direction, so that after the gap closing piece is installed in the gap, the mounting plane portion may abut against the first panel body or the second panel body; further, in this embodiment, a mounting through hole may be provided on the mounting plane portion, and the mounting through hole may be fastened by a screw, so that the gap closing piece may be fastened and installed.

[0112] Of course, it can be understood that in other embodiments, mounting plane portions may be provided at both ends of the rounded curved surface portion along the first direction, so that a pair of opposite mounting plane portions can abut against the first panel body and the second panel body respectively.

[0113] In a specific embodiment, the rounded curved surface portion 31 is provided with a limiting plug-in portion 33 at both ends along the direction in which the rounded corners extend. Along the circumferential direction of the first direction, the surface of the limiting plug-in portion 33 is concave relative to the surface of the rounded curved surface portion 31, that is, the surface of the limiting plug-in portion 33 is lower than the surface of the rounded curved surface portion 31; so that after the limiting plug-in portion 33 is inserted into the snap-fit ​​notch 50, the positioning step 34 formed between the rounded curved surface portion 31 and the limiting plug-in portion 33 abuts against the end of the first flange 12, and the surface of the rounded curved surface portion 31 is flush with the surface of the first flange 12.

[0114] That is, in this embodiment, the limiting plug-in parts at both ends of the rounded curved surface part along the extending direction of the rounded corners can be pre-inserted into the locking notches formed after the first notch and the second notch are installed accordingly, and then the installation plane part can be fastened and installed by screws.

[0115] That is to say, by providing the limiting plug-in part, the gap sealing piece can realize a pre-installation function, which is convenient to use.

[0116] Specifically, please refer to Figure 4, along the circumferential direction of the first direction, the surface of the limiting plug-in part 33 is concave relative to the surface of the rounded curved surface part 31, that is, the surface of the limiting plug-in part should be lower than the surface of the rounded curved surface part, so that a positioning step 34 can be formed at the junction of the limiting plug-in part and the rounded curved surface part, and the positioning step can be abutted against the end of the outer first flange during installation; and, in order to ensure aesthetics and prevent accumulation of impurities, the surface of the rounded curved surface part should be flush with the surface of the first flange.

[0117] In a specific embodiment, a mounting plane portion 32 is provided at one end of the rounded curved surface portion 31 along the first direction X; wherein the first notch 13 is formed by cutting a pair of intersecting first flanges 12 along their side length direction, and the ends of a pair of second flanges 22 intersecting the second notch 23 along their side length direction are retracted into the ends of the first flanges 12; so that the notch closure 30 is inserted into the snap-fit ​​notch 50 along the first direction X, and the end of the limiting plug-in portion 33 along its extension direction abuts against the end of the second flange 22 in the side length direction.

[0118] That is, in this embodiment, the gap sealing member can be installed specifically along the first direction X (that is, the direction in which the first sheet metal panel and the second sheet metal panel are buckled and installed).

[0119] Among them, combined Figure 4 and Figure 7 , it is necessary to set a mounting plane part only at one end of the rounded curved surface part along the first direction, wherein the mounting plane part can, for example, be specifically abutted against the second panel body, that is, in the scheme of setting the return flange, the mounting plane part is arranged on the rear surface of the secondary screen assembly.

[0120] At this time, considering that the front panel of the secondary screen assembly (that is, the first panel body) is not provided with a mounting plane part, when forming the first notch, the top corner of the first panel body should not be cut off, but a rounded corner structure should be formed. Figure 1 and Figure 6 The first notch can be specifically formed by cutting a pair of intersecting first flanges along the length direction thereof.

[0121] As for the second notch, in order to ensure that the above-mentioned limit plug-in part can be smoothly inserted along the first direction, please refer to the Figure 2 and Figure 6 The ends of a pair of second flanges intersecting at the second notch along their length direction should be retracted inside the ends of the first flanges to leave space for insertion of the limiting plug-in part. At this time, unlike the first panel body, the top corners of the second panel body can be cut off, for example, in a ladder shape.

[0122] In this way, after the gap sealing member is installed, the positioning step abuts against the end of the first flange, and the end of the limiting plug-in portion abuts against the end of the second flange.

[0123] In a specific embodiment, in a scheme of setting a rounded corner structure (the rounded corner structure can be specifically realized by the return flange 14), the surface of the limiting plug-in part 33 facing the first flange 12 is provided with a snap-fitting boss 35, and the snap-fitting boss 35 is used to snap-fit ​​with the end of the return flange 14.

[0124] That is, combined Figure 4 and Figure 8 In order to ensure the pre-plugging effect, a snap-in boss can be set on the surface of the limiting plug-in part facing the first flange. It can be understood that after the limiting plug-in part is plugged and installed along the first direction, the snap-in boss can be specifically snap-fitted with the end of the return flange.

[0125] Furthermore, the surface of the clamping boss can be chamfered and tilted to facilitate clamping installation.

[0126] Based on the secondary screen assembly disclosed in the above embodiments, the present application also discloses a smart blackboard, which includes a main screen assembly 200 and the secondary screen assembly 100 of the above embodiments, wherein the main screen assembly 200 and the secondary screen assembly 100 are spliced ​​and installed.

[0127] Among them, combined Fig. 9 and Fig.10 In a specific implementation, the smart blackboard also includes a first installation component; wherein the first installation component includes a wall-mounted connector 301, a side sealing plate 302, a first guide profile 303, a lower plug-in fixing member 304 and a main-sub screen transition decorative member 305.

[0128] Among them, the wall-hanging connector 301 is fixed to the second panel body 21, and the wall-hanging connector 301 is used for wall-hanging installation; the side sealing plate 302 is fixed to the second panel body 21, and the side sealing plate 302 is arranged in the vertical direction, and the side sealing plate 302 is arranged at the vertical side of the auxiliary screen assembly 100 away from the main screen assembly 200; the first guide profile 303 is fixed to the second panel body 12, and the first guide profile 303 is arranged in the vertical direction, and the first guide profile 303 is arranged at the vertical side of the auxiliary screen assembly 100 close to the main screen assembly 200; the lower plug-in fixing member 304 is fixed to the bottom end of the first guide profile 303, The lower plug-in fixing member 304 includes a first plug-in column for inserting into the first pair of insertion holes of the main screen assembly 200; the main and sub-screen transition decoration member 305 is fixed to the top end of the first guide profile 303, and the main and sub-screen transition decoration member 305 includes a transition cover 3051, a second plug-in column 3052 and a pull buckle 3053; wherein the second plug-in column 3052 is used to insert into the second docking hole 201 of the main screen assembly 200, the pull buckle 3053 is used to be installed with the pull buckle connector 202 of the main screen assembly 200, and the transition cover 3051 abuts against the top end where the sub-screen assembly 100 is connected to the main screen assembly 200.

[0129] Among them, combined Fig.11 and Fig.12 In another specific implementation, the smart blackboard also includes a second installation component; wherein the second installation component includes a wall-mounted connector 301, a side sealing plate 302, a second guide profile 306, a secondary screen upper profile 307 and a secondary screen upper profile decorative cover 308.

[0130] Among them, the wall-mounted connector 301 is fixed to the second panel body 21, and the wall-mounted connector 301 is used for wall-mounted installation; the side sealing plate 302 is fixed to the second panel body 21, and the side sealing plate 302 is arranged in the vertical direction. The side sealing plate 302 is arranged on the vertical side of the auxiliary screen assembly 100 away from the main screen assembly 200; the second guide profile 306 is fixed to the second panel body 21, and the second guide profile 306 is arranged in the vertical direction. The second guide profile 306 is arranged on the vertical side of the auxiliary screen assembly 100 close to the main screen assembly 200, and the second guide profile 306 is provided with a hanging nail 3061, and the hanging nail 3061 is used to hang into the hanging groove 203 of the main screen assembly 200; the auxiliary screen upper profile 307 is arranged at the top of the auxiliary screen assembly 100 and extends along the side length direction of the top of the auxiliary screen assembly 100, the auxiliary screen upper profile 307 is fastened to the second panel body 21, and the auxiliary screen upper profile 307 is fixedly installed with the main screen assembly 200 through the main-auxiliary screen connecting sheet metal 204; the auxiliary screen upper profile decorative cover 308 is installed at the notch of the auxiliary screen upper profile 307 at the upper end of the auxiliary screen assembly 100 away from the main screen assembly 200.

[0131] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0132] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0133] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0134] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0135] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize that some variations, modifications, changes, additions and sub-combinations thereof should be included within the scope of protection of the present utility model.

Claims

1. A secondary screen assembly, characterized in that: The secondary screen assembly comprises a first sheet metal panel (10) and a second sheet metal panel (20) which are arranged opposite to each other and fixedly mounted, and a gap sealing member (30); The first sheet metal panel (10) comprises a first panel body (11), four sides of the first panel body (11) are provided with first flanges (12) bent in the same direction, and the second sheet metal panel (20) comprises a second panel body (21), four sides of the second panel body (21) are provided with second flanges (22) bent in the same direction, so that the first sheet metal panel (10) and the second sheet metal panel (20) can be fastened and installed, and the first flange (12) is located on the outside of the second flange (22); A first notch (13) is provided at the vertex corners at both ends of one side of the first sheet metal panel (10), and a second notch (23) is provided at the vertex corners at both ends of one side of the second sheet metal panel (20), so that when the first sheet metal panel (10) and the second sheet metal panel (20) are snap-fitted and installed, the first notch (13) and the second notch (23) are snap-fitted correspondingly to form a snap-fitting notch (50), and the notch closing member (30) is used to close the snap-fitting notch (50); Wherein, the end of the first flange (12) intersecting the first notch (13) along its height direction is in a rounded structure; or, A return flange (24) protruding outward is provided between the second flange (22) and the second panel body (21) intersecting the second notch (23).

2. The secondary screen assembly according to claim 1, characterized in that: The gap sealing member (30) comprises a rounded curved surface portion (31), and a mounting plane portion (32) is provided at at least one end of the rounded curved surface portion (31) along a first direction (X), wherein the first direction (X) is a direction in which the first sheet metal panel (10) and the second sheet metal panel (20) are buckled and mounted, and the mounting plane portion (32) extends perpendicular to the first direction (X), so that the mounting plane portion (32) is used to abut against the first panel body (11) or the second panel body (21); Furthermore, the installation plane portion (32) is provided with an installation through hole (321) for fastening installation.

3. The secondary screen assembly according to claim 2, characterized in that: The rounded curved surface portion (31) is provided with limiting plug-in portions (33) at both ends along the direction in which the rounded corners extend, and along the circumferential direction of the first direction (X), the surface of the limiting plug-in portion (33) is concave relative to the surface of the rounded curved surface portion (31); So that after the limiting plug-in portion (33) is inserted into the snap-fit ​​notch (50), the positioning step (34) formed between the rounded curved surface portion (31) and the limiting plug-in portion (33) abuts against the end of the first flange (12), and the surface of the rounded curved surface portion (31) is flush with the surface of the first flange (12).

4. The secondary screen assembly according to claim 3, characterized in that: The installation plane portion (32) is provided at one end of the rounded curved surface portion (31) along the first direction (X); The first notch (13) is formed by cutting a pair of intersecting first flanges (12) along the length direction thereof, and the ends of a pair of second flanges (22) intersecting the second notch (23) along the length direction thereof are retracted into the ends of the first flanges (12); The gap sealing member (30) is inserted into the locking gap (50) along the first direction (X), and the end of the limiting insertion portion (33) along its extension direction abuts against the end of the second flange (22) in the length direction.

5. The secondary screen assembly according to claim 4, characterized in that: When the end of the first flange (12) intersecting the first notch (13) along its height direction is in a rounded structure, the rounded structure is achieved by bending the end of the first flange (12) along its height direction inwardly back to the flange (14); Wherein, a clamping boss (35) is provided on the surface of the limiting plug-in portion (33) facing the first flange (12), and the clamping boss (35) is used to clamp with the end of the return flange (14); the return flange (14) includes a return dead edge.

6. The secondary screen assembly according to claim 1, characterized in that: When a return flange (24) protruding outward is provided between the second flange (22) and the second panel body (21) intersecting at the second notch (23), the return flange (24) comprises a dead edge flange.

7. A smart blackboard, characterized in that: The smart blackboard comprises a main screen component (200) and a secondary screen component (100) which are spliced ​​and installed; The auxiliary screen assembly (100) comprises a first sheet metal panel (10) and a second sheet metal panel (20) which are arranged relatively and fixedly mounted, and a gap sealing member (30); The first sheet metal panel (10) comprises a first panel body (11), four sides of the first panel body (11) are provided with first flanges (12) bent in the same direction, and the second sheet metal panel (20) comprises a second panel body (21), four sides of the second panel body (21) are provided with second flanges (22) bent in the same direction, so that the first sheet metal panel (10) and the second sheet metal panel (20) can be fastened and installed, and the first flange (12) is located on the outside of the second flange (22); A first notch (13) is provided at the vertex corners at both ends of one side of the first sheet metal panel (10), and a second notch (23) is provided at the vertex corners at both ends of one side of the second sheet metal panel (20), so that when the first sheet metal panel (10) and the second sheet metal panel (20) are snap-fitted and installed, the first notch (13) and the second notch (23) are snap-fitted correspondingly to form a snap-fitting notch (50), and the notch closing member (30) is used to close the snap-fitting notch (50); Wherein, the end of the first flange (12) intersecting the first notch (13) along its height direction is in a rounded structure; or, A return flange (24) protruding outward is provided between the second flange (22) and the second panel body (21) intersecting the second notch (23).

8. The smart blackboard according to claim 7, characterized in that: The gap sealing member (30) comprises a rounded curved surface portion (31), and a mounting plane portion (32) is provided at at least one end of the rounded curved surface portion (31) along a first direction (X), wherein the first direction (X) is a direction in which the first sheet metal panel (10) and the second sheet metal panel (20) are buckled and mounted, and the mounting plane portion (32) extends perpendicular to the first direction (X), so that the mounting plane portion (32) is used to abut against the first panel body (11) or the second panel body (21); Furthermore, the installation plane portion (32) is provided with an installation through hole (321) for fastening installation; Wherein, the rounded curved surface portion (31) is provided with limiting plug-in portions (33) at both ends along the direction in which the rounded corners extend, and along the circumferential direction of the first direction (X), the surface of the limiting plug-in portion (33) is concave relative to the surface of the rounded curved surface portion (31); so that after the limiting plug-in portion (33) is inserted into the snap-fit ​​notch (50), a positioning step (34) formed between the rounded curved surface portion (31) and the limiting plug-in portion (33) abuts against the end of the first flange (12), and the surface of the rounded curved surface portion (31) is flush with the surface of the first flange (12); The installation plane portion (32) is provided at one end of the fillet curved surface portion (31) along the first direction (X); the first notch (13) is formed by cutting a pair of intersecting first flanges (12) along the length direction thereof, and the ends of a pair of second flanges (22) intersecting the second notch (23) along the length direction thereof are retracted into the ends of the first flanges (12); so that the notch sealing member (30) is inserted into the locking notch (50) along the first direction (X), and the end of the limiting insertion portion (33) along the extension direction thereof abuts against the end of the second flange (22) in the length direction thereof; Wherein, when the end of the first flange (12) intersecting the first notch (13) along its height direction is in a rounded structure, the rounded structure is achieved by bending the end of the first flange (12) along its height direction inwardly to form a return flange (14); the surface of the position-limiting plug-in portion (33) facing the first flange (12) is provided with a clamping boss (35), and the clamping boss (35) is used to clamp with the end of the return flange (14); the return flange (14) includes a return dead edge; Wherein, when a return flange (24) protruding outward is provided between the second flange (22) and the second panel body (21) intersecting at the second notch (23), the return flange (24) comprises a dead edge flange.

9. The smart blackboard according to claim 7, characterized in that: The smart blackboard also includes a first mounting component; Wherein, the first installation component includes: A wall-mounted connector (301) fixed to the second panel body (21), the wall-mounted connector (301) being used for wall-mounted installation; A side sealing plate (302) is fixed to the second panel body (21), the side sealing plate (302) is arranged in a vertical direction, and the side sealing plate (302) is arranged on a vertical side of the auxiliary screen assembly (100) away from the main screen assembly (200); A first guide profile (303) is fixed to the second panel body (21), the first guide profile (303) is arranged in a vertical direction, and the first guide profile (303) is arranged on a vertical edge of the auxiliary screen assembly (100) close to the main screen assembly (200); A lower plug-in fixing member (304) is fixed to the bottom end of the first guide profile (303), and the lower plug-in fixing member (304) includes a first plug-in column for inserting into a first pair of insertion holes of the main screen assembly (200); The main-sub-screen transition decorative piece (305) is fixed to the top end of the first guide profile (303), and the main-sub-screen transition decorative piece (305) includes a transition cover (3051), a second plug-in column (3052) and a buckle (3053); wherein the second plug-in column (3052) is used to be inserted into the second docking socket (201) of the main screen assembly (200), and the buckle (3053) is used to be installed with the buckle connector (202) of the main screen assembly (200), and the transition cover (3051) is in contact with the top end where the sub-screen assembly (100) and the main screen assembly (200) are connected.

10. The smart blackboard according to claim 7, characterized in that: The smart blackboard also includes a second mounting component; Wherein, the second installation component comprises: A wall-mounted connector (301) fixed to the second panel body (21), the wall-mounted connector (301) being used for wall-mounted installation; A side sealing plate (302) is fixed to the second panel body (21), the side sealing plate (302) is arranged in a vertical direction, and the side sealing plate (302) is arranged on a vertical side of the auxiliary screen assembly (100) away from the main screen assembly (200); A second guide profile (306) is fixed to the second panel body (21), the second guide profile (306) is arranged in a vertical direction, and the second guide profile (306) is arranged on a vertical edge of the auxiliary screen assembly (100) close to the main screen assembly (200), wherein the second guide profile (306) is provided with a hanging nail (3061), and the hanging nail (3061) is used to be hung in the hanging groove (203) of the main screen assembly (200); The auxiliary screen upper profile (307) is arranged at the top of the auxiliary screen assembly (100) and extends along the length direction of the top of the auxiliary screen assembly (100); the auxiliary screen upper profile (307) is fastened to the second panel body (21); the auxiliary screen upper profile (307) is fixedly mounted to the main screen assembly (200) through the main and auxiliary screen connecting sheet metal (204); The auxiliary screen upper profile decorative cover (308) is installed at the notch of the auxiliary screen upper profile (307) at the upper end of the auxiliary screen assembly (100) away from the main screen assembly (200).

Images