CN115610138A - Auxiliary screen device and intelligent blackboard - Google Patents

Abstract

The application provides a vice screen device and intelligent blackboard. The application provides a vice screen device, a main screen device for with intelligent blackboard is connected, vice screen device includes vice screen and frame subassembly, the frame subassembly includes two at least frame spare, two at least frame spare amalgamation each other and enclose into the cavity framework, one of two at least frame spare has the side frame of extending along its self direction, one of side frame and vice screen has the bulge, another has the recess, the bulge all is unanimous with the side extending direction of vice screen with the extending direction of recess, bulge and recess joint, with the relative position of restriction frame spare and vice screen on the thickness direction of vice screen. The utility model provides a vice screen assembly overall structure is comparatively simple and the cost is lower.

Description

Secondary screen device and smart blackboard

technical field

The present application relates to the technical field of display screens, in particular to a secondary screen device and a smart blackboard.

Background technique

The smart blackboard uses capacitive touch technology to combine the traditional handwriting blackboard with multimedia equipment, and can easily switch between chalk writing on the blackboard and multimedia applications. The same area can be written with chalk normally like an ordinary blackboard, and can also be touched by hand , and watch a variety of rich multimedia applications such as ppt, video, pictures, animations, etc.

Existing smart blackboards generally include a main screen device and a sub-screen device spliced on the side of the main screen device, wherein the sub-screen device is composed of a frame component, a wall hanging, a sub-screen and a splicing adapter for the main and sub-screens, etc., wherein the frame component includes The upper frame, the lower frame, the left frame, the right frame, the corners connected between the adjacent frames and the upper frame adapter, the upper frame, the lower frame, the left frame and the right frame form a frame for accommodating the secondary screen, and the upper frame , the lower frame, the left frame and the right frame are respectively fastened to the secondary screen by screws, and the secondary screen is made of aluminum honeycomb composite board.

Therefore, the overall structure of the existing secondary screen device is relatively complicated, and more materials are used, and the cost is relatively high.

Contents of the invention

The present application provides a secondary screen device and a smart blackboard, the overall structure is relatively simple and the cost is low.

On the one hand, the present application provides a secondary screen device for connecting with the main screen device of the smart blackboard. The secondary screen device includes a secondary screen and a frame assembly. Form a hollow frame body, one of at least two frame parts has a side frame extending along its own direction, one of the side frame and the secondary screen has a protrusion, and the other has a groove, and the protrusion and the recess The extending direction of the grooves is consistent with the extending direction of the side of the secondary screen, and the protrusion is engaged with the groove to limit the relative position of the frame member and the secondary screen in the thickness direction of the secondary screen.

Optionally, in the secondary screen device provided in the present application, at least two frame components include a first frame component and a second frame component, and the first frame component and the second frame component are respectively arranged on different sides of the secondary screen, And the first frame member surrounds at least two adjacent sides of the secondary screen.

Optionally, in the secondary screen device provided in the present application, the first frame member surrounds three adjacent sides of the secondary screen.

Optionally, in the secondary screen device provided in the present application, the first frame member includes a first frame and a second frame, and the first frame abuts on the side extending along the height direction of the secondary screen; the second frame is Two, and the two second frames are respectively connected to the two sides extending along the length direction of the secondary screen; the second frame is provided with a protruding part, and the protruding part is located on one side of the second frame facing the secondary screen On the side, the protruding part engages with the groove to limit the relative position of the first frame member and the secondary screen in the thickness direction of the secondary screen.

Optionally, in the secondary screen device provided in the present application, the second frame member is arranged opposite to the first frame, the frame assembly further includes a first fastener, and the second frame member and the side of the secondary screen pass through the second A fastener is detachably connected.

Optionally, in the secondary screen device provided in the present application, the frame assembly further includes two adapters, and the two adapters are respectively arranged on two ends of the second frame along its own extending direction; The connector includes an adapter body and an extension, the first end of the adapter body is connected to the second frame, the extension is connected to the second end of the adapter body, and the extending direction of the extension is the same as that of the secondary screen. The thickness direction is consistent; there is a card slot on the second frame, and the card slot has two opposite groove walls. The two groove walls are arranged at intervals in the side extension direction of the secondary screen. abut to limit the relative position of the first frame member and the secondary screen in the length direction of the secondary screen.

Optionally, in the secondary screen device provided in the present application, the frame assembly further includes a limiter, the extending direction of the limiter is consistent with the height direction of the secondary screen, the limiter is set correspondingly to the second frame, and the limiter is used for For connecting the second frame and the secondary screen, so as to limit the relative position of the first frame and the secondary screen in the height direction of the secondary screen.

Optionally, in the secondary screen device provided in the present application, the secondary screen includes a foam layer, a welding layer, and a writing layer stacked in sequence, and the writing layer is located on the front of the secondary screen device.

Optionally, the secondary screen device provided in this application further includes at least one connection accessory and a second fastener, and the connection accessory is connected to the secondary screen or the frame assembly through the second fastener; the connection accessory includes at least one of the following By: connecting frame, baffle, splicing frame.

In another aspect, the present application provides a smart blackboard, including a main screen device and the above-mentioned secondary screen device.

The present application provides a secondary screen device and a smart blackboard. The secondary screen device provided in the present application is used to connect with the main screen device of the smart blackboard. The secondary screen device includes a secondary screen and a frame assembly, and the frame assembly includes at least two frame parts, at least The two frame parts are joined together to form a hollow frame, at least one of the two frame parts has a side frame extending along its own direction, one of the side frame and the secondary screen has a protruding part, and the other has a The groove, the extension direction of the protrusion and the groove are consistent with the extension direction of the side of the auxiliary screen, and the protrusion is engaged with the groove to limit the relative position of the frame member and the auxiliary screen in the thickness direction of the auxiliary screen. Therefore, the overall structure of the secondary screen device provided by the present application is relatively simple and the cost is low.

The structure of the present application as well as its other application purposes and beneficial effects will be more clearly understood through the description of the preferred embodiments in conjunction with the accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without any creative effort.

Figure 1a is a schematic structural diagram of a secondary screen device;

Fig. 1b is a schematic diagram of a partial structure of the secondary screen device in Fig. 1a;

Fig. 2a is a schematic diagram of the three-dimensional structure of the secondary screen device provided by the embodiment of the present application;

Figure 2b is an exploded view of the secondary screen device provided by the embodiment of the present application;

Fig. 2c is a schematic diagram of the three-dimensional structure of the secondary screen in the secondary screen device provided by the embodiment of the present application;

Figure 2d is an enlarged schematic diagram of the local structure at A in Figure 2c;

Fig. 3a is a schematic cross-sectional view of the connection state between the secondary screen and the first frame member in the secondary screen device provided by the embodiment of the present application;

Figure 3b is an enlarged schematic view of the local structure at B in Figure 3a;

Fig. 4a is a schematic plan view of the secondary screen device provided by the embodiment of the present application;

Figure 4b is an enlarged schematic view of the local structure at C in Figure 4a;

Fig. 5a is a schematic diagram of the front structure of the frame assembly in the secondary screen device provided by the embodiment of the present application;

Figure 5b is an enlarged schematic view of the local structure at D in Figure 5a;

Fig. 5c is a schematic perspective view of the three-dimensional structure of the adapter in the secondary screen device provided by the embodiment of the present application;

Figure 6 is an enlarged schematic view of the local structure at E in Figure 2a;

Fig. 7 is a schematic structural diagram of the secondary screen in the secondary screen device provided by the embodiment of the present application;

Figure 8a is an enlarged schematic view of the local structure at F in Figure 2a;

Figure 8b is an enlarged schematic view of the local structure at G in Figure 2a;

Fig. 9a is a connection state diagram of the secondary screen and the first frame member in the secondary screen device provided by the embodiment of the present application;

Figure 9b is an enlarged schematic view of the local structure at H in Figure 9a;

Figure 10a is a schematic structural diagram of the smart blackboard provided by the embodiment of the present application;

Fig. 10b is an enlarged schematic diagram of the local structure at point I in Fig. 10a.

Explanation of reference signs:

1, 30-secondary screen; 11-foaming layer; 12-welding layer; 13-writing layer; 14-zinc plate layer; 2,10-frame component; Side frame; 2111-limiting hole; 212-first frame; 213-second frame; 2131-card slot; 21311-slot wall; 21b-second frame piece; ; 2211-the first connecting arm; 2212-the second connecting arm; 222-extending part; Frame; 62-wall adapter; 63-baffle; 64-splicing frame; 641-raised part; 642-connecting part; 100, 300-secondary screen device; 200-main screen device; ;401-fixed part;402-socket part;101-top frame;102-bottom frame;103-left frame;104-right frame;105-corner;106-top frame adapter;20-wall hanging;40- Main and secondary screen splicing adapter; 50-screw.

detailed description

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them.

Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In this application, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

It should be noted that in the description of this application, the terms "first" and "second" are only used to describe different components conveniently, and should not be understood as indicating or implying a sequence relationship, relative importance, or implicit indication The number of technical characteristics. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

The smart blackboard uses capacitive touch technology to combine traditional handwriting blackboards with multimedia devices, and can easily switch between chalk writing on the blackboard and multimedia applications. The same area can be used for writing with chalk like an ordinary blackboard, or as a tablet computer , Watch various rich multimedia applications such as ppt, video, picture, animation and so on with hand touch.

Fig. 1a is a schematic structural diagram of an existing secondary screen device. Fig. 1b is a schematic diagram of a partial structure of the secondary screen device in Fig. 1a.

As shown in Figure 1a and Figure 1b, the existing secondary screen device 100 is composed of a frame assembly 10, a wall hanging 20, a secondary screen 30, and a main and secondary screen splicing adapter 40, among which the frame assembly 10 includes an upper frame 101, a lower The frame 102 , the left frame 103 , the right frame 104 , the corner 105 connected between adjacent frames and the upper frame adapter 106 , the upper frame 101 , the lower frame 102 , the left frame 103 and the right frame 104 enclose the secondary screen 30 frame, and the upper frame 101, lower frame 102, left frame 103, and right frame 104 are respectively fastened to the secondary screen 30 by screws 50, and the secondary screen 30 is made of aluminum honeycomb composite board.

However, the overall structure of the existing secondary screen device 100 is complicated, and at the same time, the frame assembly 10 and the secondary screen 30 are fastened and connected by a circle of screws 50, resulting in complicated assembly and high man-hour costs; in addition, because the secondary screen 30 is made of aluminum honeycomb composite The surface of the board and the writing board needs to be bent and wrapped on four sides, and then bonded with the aluminum honeycomb layer. The bending process is complicated, the production capacity is low, and the accuracy of the shape and dimension is poor, which affects the assembly with the frame component 10, making the assembly difficult, and There will be a problem that the front gap (the gap between the secondary screen 30 and the frame assembly 10) exceeds the standard.

Therefore, the embodiments of the present application provide a secondary screen device and a smart blackboard, which overcome the above-mentioned defects of the secondary screen device by changing the structure of the frame component, the connection mode between the frame component and the secondary screen, and the manufacturing process of the secondary screen.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Fig. 2a is a schematic perspective view of the three-dimensional structure of the secondary screen device provided by the embodiment of the present application. Fig. 2b is an exploded view of the secondary screen device provided by the embodiment of the present application. Fig. 2c is a schematic perspective view of the three-dimensional structure of the secondary screen in the secondary screen device provided by the embodiment of the present application. Fig. 2d is an enlarged schematic diagram of the local structure at point A in Fig. 2c. Fig. 3a is a schematic cross-sectional view of a connection state between the secondary screen and the first frame member in the secondary screen device provided by the embodiment of the present application. Fig. 3b is an enlarged schematic diagram of the local structure at B in Fig. 3a.

As shown in Figures 2a to 3b, the embodiment of the present application provides a secondary screen device 300 for connecting with the main screen device of the smart blackboard. The secondary screen device 300 includes a secondary screen 1 and a frame assembly 2, and the frame assembly 2 includes at least two A frame piece 21, at least two frame pieces 21 are joined together to form a hollow frame body, one of the at least two frame pieces 21 has a side frame 211 extending along its own direction, the side frame 211 and the secondary screen 1 One has a protruding part 3, and the other has a groove 4. The extending direction of the protruding part 3 and the groove 4 is consistent with the extending direction of the side of the secondary screen 1. The protruding part 3 is engaged with the groove 4. In order to limit the relative position of the frame member 21 and the secondary screen 1 in the thickness direction of the secondary screen 1 .

In the secondary screen device 300 provided in this embodiment, a protrusion 3 is provided on one of the side frame 211 and the secondary screen 1, and a groove 4 is provided on the other, so that the thickness direction of the secondary screen 1 The relative position of the frame member 21 and the secondary screen 1 is limited to prevent the position of the frame member 21 relative to the secondary screen 1 from changing in the thickness direction of the secondary screen 1, so as to improve the reliability of the connection between the internal structures of the secondary screen device 300 .

It should be noted that, in order to hang the secondary screen device 300 provided in this embodiment on the wall, the secondary screen device 300 provided in this embodiment also includes two hanging parts 5, and the distribution direction of the two hanging parts 5 is the same as The length direction of the smart blackboard is consistent, and the two hanging parts 5 are located at the end of the auxiliary screen 1 facing the wall, and the two hanging parts 5 are fixed on the auxiliary screen 1 by threaded fasteners.

Specifically, the hanging part 5 may include a connecting part and a hanging part, the connecting part is used to connect with the secondary screen 1, and the hanging part is used to hang the secondary screen device 300 on the wall. The specific shape of the hanging part is not limited.

In order to make the structure of the above-mentioned frame assembly 2 simpler and to realize simplification of assembly, in this embodiment, at least two frame components 21 include a first frame component 21a and a second frame component 21b, and the first frame component 21 a and the second frame member 21 b are respectively disposed on different sides of the secondary screen 1 , and the first frame member 21 a is disposed on at least two adjacent sides of the secondary screen 1 .

In a specific implementation of this embodiment, the first frame member 21a surrounds three adjacent sides of the secondary screen 1, and the second frame member 21b surrounds one side of the secondary screen 1, so that the second frame A frame member 21 a and a second frame member 21 b form a rectangular hollow frame, wherein the second frame member 21 b includes a side frame 211 .

Specifically, the first frame piece 21a is in a "U" shape, and the extension direction of the second frame piece 21b is consistent with the height direction of the smart blackboard. It should be noted that, the first frame member 21a and the second frame member 21b may also have other practicable shapes, and here, the shapes of the first frame member 21a and the second frame member 21b are not specifically limited.

As shown in Figure 2b to Figure 3b, specifically, the first frame member 21a includes a first frame 212 and a second frame 213, the first frame 212 abuts on the side extending along the height direction of the secondary screen 1, the second The second frame 21b is arranged opposite to the first frame 212; there are two second frames 213, and the two second frames 213 are respectively connected to the two sides extending along the length direction of the secondary screen 1; the second frame 213 It includes a side frame 211 and a protruding part 3, the protruding part 3 is located on the side of the side frame 211 facing the secondary screen 1, the groove 4 is provided on the two sides extending along the length direction of the secondary screen 1, and the protruding part 3 is engaged with the groove 4 to limit the relative position of the first frame member 21 a and the secondary screen 1 in the thickness direction of the secondary screen 1 . In this way, the relative positions of the first frame member 21a and the secondary screen 1 in the thickness direction of the secondary screen 1 can be restricted on both sides of the secondary screen 1 whose heights are reversed.

As shown in Fig. 3b, in some optional embodiments, the protruding part 3 is arranged at the middle part of the side frame 211 facing the secondary screen 1, and the thickness of the protruding part 3 is equal everywhere, and the groove 4 is the same as The groove body corresponding to the protrusion 3, specifically, the cross-sectional figure of the first frame member 21a along the height direction of the secondary screen 1 is "T" shape, and the cross-section of the groove 4 along the height direction of the secondary screen 1 The graph is "U" shaped.

Fig. 4a is a schematic plan view of a secondary screen device provided by an embodiment of the present application. Fig. 4b is an enlarged schematic diagram of the local structure at point C in Fig. 4a.

As shown in Fig. 4a and Fig. 4b, in order to connect the second frame member 21b to the secondary screen 1, in this embodiment, the frame assembly 2 further includes a first fastener, and the second frame member 21b is connected to the secondary screen 1 The side edges are detachably connected by a first fastener.

In a specific implementation of this embodiment, the first fastener may be a threaded fastener, such as a screw, a bolt, and the like. Here, there is no specific limitation on the type of the first fastener.

Fig. 5a is a schematic front view of a frame assembly in a secondary screen device provided by an embodiment of the present application. Fig. 5b is an enlarged schematic diagram of the local structure at D in Fig. 5a. Fig. 5c is a schematic perspective view of the three-dimensional structure of the adapter in the secondary screen device provided by the embodiment of the present application.

As shown in Fig. 4b to Fig. 5c, in the secondary screen device 300 provided by the present application, in order to connect the first frame part 21a and the second frame part 21b, the frame assembly 2 further includes two adapter parts 22, two The adapters 22 are respectively arranged on two ends of the second frame member 21b along its own extension direction; the adapters 22 include an adapter body 221 and an extension 222, and the first end of the adapter body 221 is connected to On the second frame part 21b, the extension part 222 is connected to the second end of the adapter body 221, and the extending direction of the extension part 222 is consistent with the thickness direction of the secondary screen 1; The groove 2131 has two opposite groove walls 21311, and the two groove walls 21311 are arranged at intervals along the side extension direction of the secondary screen 1. The extension 222 is located in the locking groove 2131 and abuts against the groove walls 21311 to limit the first The relative position of a frame member 21 a and the secondary screen 1 in the length direction of the secondary screen 1 .

As shown in Figure 5c, in a specific implementation of this embodiment, the adapter body 221 includes a first connecting arm 2211 and a second connecting arm 2212 perpendicular to each other, and the extension direction of the first connecting arm 2211 is in line with the second frame The extension direction of the part 21b is consistent, and the first connecting arm 2211 is connected with the second frame part 21b through a threaded fastener, the extending direction of the second connecting arm 2212 is consistent with the length direction of the secondary screen 1, and the second connecting arm 2212 is passed through The threaded fastener is connected with the auxiliary screen 1, the extension part 222 is arranged on the side of the second connecting arm 2212 away from the wall, and the card slot 2131 is arranged on the protruding part 3, and the extension part 222 is located in the card slot 2131 and is connected with The groove wall 21311 abuts to limit the relative position of the protruding part 3 and the secondary screen 1 in the length direction of the secondary screen 1 .

Fig. 6 is an enlarged schematic diagram of the local structure at E in Fig. 2a.

As shown in FIG. 6, in order to limit the relative position between the first frame member 21a and the secondary screen 1 in the height direction of the secondary screen 1, in this embodiment, the frame assembly 2 also includes a limiting member. The extension direction of the part is consistent with the height direction of the secondary screen 1, and the limit part is set corresponding to the second frame 213, and the limit part is used to connect the second frame 213 and the secondary screen 1 to limit the first frame part 21a and the secondary screen 1 The relative position in the height direction of the secondary screen 1. In this way, the position of the first frame member 21a is respectively restricted in the thickness direction, length direction and height direction of the secondary screen 1, thereby ensuring a reliable connection between the first frame member 21a and the secondary screen 1, and the first The reliable connection between the frame member 21a and the second frame member 21b can improve the reliability of the secondary screen device 300 provided in this embodiment.

In some optional embodiments, the limiter can be a threaded fastener, and a limit hole 2111 corresponding to the limiter is opened on the side frame 211, and the axial direction of the limiter is equal to the height of the auxiliary screen 1 The directions are consistent, and the limiting member passes through the limiting hole 2111 to connect the second frame 213 and the secondary screen 1 to limit the relative position between the first frame 21a and the secondary screen 1 in the height direction of the secondary screen 1 .

FIG. 7 is a schematic structural diagram of a secondary screen in a secondary screen device provided in an embodiment of the present application.

As shown in FIG. 7 , in order to improve the gap problem between the secondary screen 30 and the frame assembly 10 in the existing secondary screen device 100 , in this application, the secondary screen 1 includes foam layers 11 stacked in sequence, welded layer 12 and writing layer 13, the writing layer 13 is located on the front of the secondary screen device 300, wherein the writing layer 13 is a galvanized roll coating, the welding layer 12 is a polymer film, and the foaming layer 11 is a plastic foaming layer, wherein, Polymer film is a thin film made of organic polymer.

In some embodiments, the secondary screen 1 further includes a zinc plate layer 14 opposite to the wall surface, and a welding layer 12 is interposed between the zinc plate layer 14 and the foam layer 11. It should be noted that the zinc plate layer 14 and the writing Layer 13 differs in that zinc plate layer 14 does not require roll coating.

Therefore, when manufacturing the secondary screen 1, firstly, the fusion layer 12, that is, the polymer film, is heated and melted at a high temperature, and then the writing layer 13 and the foam layer 11 are welded together through the fusion layer 12 for compounding, and then the The welding layer 12 welds the zinc plate layer 14 and the foam layer 11 together to form a preliminary formed secondary screen 1 ; then, the shape of the secondary screen 1 is processed by machining to obtain the final formed secondary screen 1 . Therefore, in the process of manufacturing the secondary screen 1, the process adopted is relatively stable, so that the dimensional accuracy of the molded secondary screen 1 is better, therefore, the gap between the secondary screen 30 and the frame assembly 10 can be avoided, and the improvement can be improved. The problem of excessive frontal clearance.

In order to enable the secondary screen device 300 provided in this application to be effectively connected and used with other components, the secondary screen device 300 provided in the embodiment of the present application further includes at least one connecting accessory 6 and a second fastener, and the connecting accessory 6 passes through the second fastener. The fasteners are connected to the secondary screen 1 or the frame assembly 2, wherein the second fasteners can be threaded fasteners such as self-tapping screws, or other types of fasteners. Here, the second fasteners The type of is not specifically limited.

Fig. 8a is an enlarged schematic diagram of the local structure at F in Fig. 2a. Fig. 8b is an enlarged schematic diagram of the local structure at G in Fig. 2a.

As shown in Figure 2a, Figure 2b, Figure 8a and Figure 8b, in this embodiment, the connection accessory 6 includes a connection frame 61, a wall adapter 62, a baffle 63 and a splicing frame 64, and the connection frame 61 is detachably connected At the bottom of the auxiliary screen 1, the wall adapter 62 is detachably connected to the connecting frame 61, the baffle 63 is detachably connected to the side of the auxiliary screen 1 facing the wall, the baffle 63 is close to the edge of the auxiliary screen 1, And the extension direction of the baffle 63 is consistent with the height direction of the smart blackboard, and the splicing frame 64 is connected to the second frame member 21b through a threaded fastener; specifically, the connecting frame 61 and the baffle 63 are both connected to the foam layer 11 . In this way, the connection strength between the connecting frame 61 and the baffle plate 63 and the secondary screen 1 can be improved.

As shown in Figure 8a, in some optional embodiments, both the connecting frame 61 and the wall adapter 62 are in an "L" shape. It should be noted that the connecting frame 61 and the wall adapter 62 can also be other Shape, here, other shapes will not be introduced in detail.

As shown in Figure 8b, in some optional embodiments, the splicing frame 64 includes a raised portion 641 and two connecting portions 642 connected to the raised portion 641, the raised portion 641 is in the shape of a "U", and the raised The extension direction of the bottom wall of the raised portion 641 is consistent with the extension direction of the second frame member 21b, and the bottom wall of the raised portion 641 is opposite to the back of the second frame member 21b, and the two connecting portions 642 are located on the second frame member 21b. The extending direction of the connecting portion 642 is distributed at both ends of the protruding portion 641, and the connecting portion 642 is connected to the side wall of the protruding portion 641, and the extending direction of the connecting portion 642 is consistent with the extending direction of the second frame member 21b. The connecting portion is connected to the second frame member 21b through a threaded fastener.

Fig. 9a is a connection state diagram of the secondary screen and the first frame member in the secondary screen device provided by the embodiment of the present application. Fig. 9b is an enlarged schematic diagram of the local structure at H in Fig. 9a.

Referring to Fig. 9a and Fig. 9b, when installing the secondary screen device 300 provided by the present application, first, push the first frame member 21a close to the secondary screen 1 on the side of the secondary screen 1, so that the protrusion 3 and the groove 4 are engaged. Then, install the second frame member 21b on the secondary screen 1 through threaded fasteners, and set adapters 22 at both ends of the second frame member 21b along its own extension direction, so that the adapters 22 and the auxiliary screen 1 The screen 1 is connected, and the extension part 222 is engaged with the card slot 2131; finally, the first frame member 21a and the secondary screen 1 are connected through the limiting member, and the secondary screen device 300 is installed.

The secondary screen device provided in this embodiment is used to connect with the main screen device of the smart blackboard. The secondary screen device includes a secondary screen and a frame assembly. The frame assembly includes at least two frame pieces, and at least two frame pieces are joined together to form a hollow frame. One of the at least two frame parts has a side frame extending along its own direction, one of the side frame and the sub-screen has a protrusion, and the other has a groove, and the extension of the protrusion and the groove The directions are consistent with the extension direction of the side of the secondary screen, and the protrusion is engaged with the groove to limit the relative position of the frame member and the secondary screen in the thickness direction of the secondary screen. Therefore, the overall structure of the secondary screen device provided by this embodiment is relatively simple and the cost is low.

Fig. 10a is a schematic structural diagram of the smart blackboard provided by the embodiment of the present application. Fig. 10b is an enlarged schematic diagram of the local structure at point I in Fig. 10a.

As shown in Figure 9 and Figure 10, this embodiment provides a smart blackboard, including a main screen device 200, a secondary screen device 300 and a main and secondary screen splicing piece 400, and the secondary screen device 300 and the main The splices 400 are connected. Wherein, the specific structure, function, and working principle of the secondary screen device 300 have been described in detail in the foregoing embodiments, so details will not be repeated here.

In the specific implementation of this embodiment, the main and auxiliary screen splicing piece 400 includes a fixing part 401 and two insertion parts 402, the extension direction of the fixing part 401 is consistent with the length direction of the main screen device 200, and the two insertion parts 402 Located on the side of the fixed part 401 away from the end surface of the main screen device 200 in the thickness direction of the main screen device 200, the adapter 22 has a protruding positioning part 223, and the positioning part 223 is arranged on the first connecting arm 2211 and the second connecting arm 2211. At the transitional connection of the arm 2212, the positioning part 223 has a slot, one plugging part 402 is plugged into the slot, and the other plugging part 402 is plugged into the main screen device 200, so as to realize the connection between the secondary screen device 300 and the main screen device 200 .

Specifically, in the smart blackboard provided in this embodiment, the secondary screen device 300 is installed first, and then the secondary screen device 300 and the main screen device 200 are connected through the main and secondary screen splicing parts 400 .

It should be noted that the installation steps of the secondary screen device 300 have been described in detail in the above-mentioned embodiments, and will not be repeated here.

The smart blackboard provided in this embodiment includes a main screen device, a secondary screen device, and a main and secondary screen splicing piece, and the secondary screen device and the main screen device are connected through the main and secondary screen splicing pieces, wherein the secondary screen device includes a secondary screen and a frame component, The frame assembly includes at least two frame parts, at least two frame parts are joined together to form a hollow frame body, one of the at least two frame parts has a side frame extending along its own direction, and one of the side frame and the secondary screen One has a protrusion, the other has a groove, the extension direction of the protrusion and the groove is consistent with the extension direction of the side of the auxiliary screen, and the protrusion is engaged with the groove to limit the distance between the frame and the auxiliary screen. The relative position in the thickness direction of the secondary screen. Therefore, the smart blackboard provided by this embodiment has a relatively simple structure and low cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit it; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the application. scope.

Claims (10)

1. The utility model provides a vice screen device, its characterized in that for be connected with the main screen device of intelligence blackboard, vice screen device includes vice screen and frame subassembly, the frame subassembly includes two at least frame spare, two at least frame spare amalgamation each other and enclose into the cavity framework, one among two at least frame spare has the side frame that extends along its self direction, the side frame with one in the vice screen has the bulge, and another has the recess, the bulge with the extending direction of recess all with the side extending direction of vice screen is unanimous, the bulge with the recess joint, in order to restrict the frame spare with the vice screen is in the ascending relative position of thickness direction of vice screen.

2. The secondary screen apparatus of claim 1, wherein the at least two frame members comprise a first frame member and a second frame member, the first frame member and the second frame member respectively surrounding different sides of the secondary screen, and the first frame member surrounding at least two adjacent sides of the secondary screen.

3. A secondary screen assembly according to claim 2, wherein the first frame member is arranged to surround three adjacent sides of the secondary screen.

4. A secondary screen assembly according to claim 3, wherein the first bezel member includes a first bezel and a second bezel, the first bezel abutting against a side edge of the secondary screen extending in a height direction thereof; the two second frames are respectively connected to two side edges of the auxiliary screen extending along the length direction of the auxiliary screen;

be equipped with on the second frame the bulge, the bulge is located the second frame towards one side of vice screen, the bulge with the recess joint, in order to restrict first frame spare with vice screen is in the ascending relative position of thickness direction of vice screen.

5. The secondary screen apparatus of claim 4, wherein the second frame member is disposed opposite the first frame member, the frame assembly further includes a first fastener, and the second frame member is removably coupled to the side of the secondary screen via the first fastener.

6. The secondary screen apparatus of claim 4 or 5, wherein the bezel assembly further comprises two adapters, the two adapters being respectively provided on both ends of the second bezel member in its own extending direction; the adapter comprises an adapter body and an extension part, wherein the first end of the adapter body is connected to the second frame piece, the extension part is connected to the second end of the adapter body, and the extension direction of the extension part is consistent with the thickness direction of the auxiliary screen;

the second frame is provided with a clamping groove, the clamping groove is provided with two opposite groove walls, the two groove walls are arranged at intervals in the extending direction of the side edge of the auxiliary screen, and the extending portion is located in the clamping groove and abutted against the groove walls so as to limit the relative positions of the first frame piece and the auxiliary screen in the length direction of the auxiliary screen.

7. The secondary screen device according to claim 6, wherein the frame assembly further includes a limiting member, an extending direction of the limiting member is consistent with a height direction of the secondary screen, the limiting member is disposed corresponding to the second frame, and the limiting member is configured to connect the second frame and the secondary screen to limit a relative position of the first frame member and the secondary screen in the height direction of the secondary screen.

8. A secondary screen assembly as claimed in claim 4, wherein the secondary screen includes a foam layer, a weld layer and a writing layer, all of which are provided in a stacked relationship in the order named, the writing layer being provided on the front face of the secondary screen assembly.

9. The secondary screen assembly of claim 8, further comprising at least one attachment accessory and a second fastener, the attachment accessory being attached to the secondary screen or the bezel assembly via the second fastener;

the connection accessory includes at least one of: link, baffle, splice frame.

10. An intelligent blackboard, comprising a primary screen device and a secondary screen device as claimed in any one of claims 1 to 9.

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