CN210865140U - Intelligent blackboard - Google Patents

Abstract

The utility model relates to a smart blackboard, comprising an electronic flat panel and a writing board. The electronic flat panel includes a display module and a first splicing frame arranged on the back side of the back panel. The writing board includes a writing body and a second splicing frame. The splicing frame includes a first frame plate, a pressing plate and a second frame plate connecting the two. The first frame plate is connected with the back side of the writing body, and the pressing plate is pressed against the second splicing frame; Both ends are provided with a first fixing piece, both ends of the second splicing frame in the length direction are provided with a second fixing piece, both fixing pieces are provided with guiding slopes, and a third piece is also arranged at the splicing point of the electronic tablet and the writing board. The fixing part, the third fixing part includes a clamping plate and two limit plates arranged at intervals on the same side of the clamping plate, the clamping plate and the two limit plates enclose a clamping groove, the first fixing part and the second The fixing piece is clamped in the clamping groove, and the limit plate is provided with a matching slope. The smart blackboard of the utility model has no step difference after splicing.

Description

Wisdom Blackboard

technical field

The utility model relates to the technical field of electronic equipment, in particular to a smart blackboard.

Background technique

The smart blackboard usually includes a spliced electronic tablet and a writing board. The electronic tablet can be operated by touch to present teaching content in the form of pictures and videos, while the writing board can be used by teachers to write on the blackboard and present the teaching content in the form of blackboard writing. The combination of electronic tablet and writing board can realize the combination of traditional teaching and electronic teaching, and improve the teaching effect.

When the electronic tablet and writing board of the traditional smart blackboard are spliced, pins are generally used for positioning on the splicing side, and the upper and lower ends of the splicing side are fixed by means of connecting pieces. The connecting pieces are fixed on the back of the electronic tablet and writing board by screws. On the side, but the positioning and fixing effect is not good, the overall surface will appear wavy, and the upper and lower borders are prone to dislocation, and the level difference is obvious, which affects the user experience.

Utility model content

The purpose of the embodiments of the present invention is to provide a smart blackboard, the electronic tablet and the writing board are easy to splicing operation, there is no step difference after splicing, and the surface is flat, which is convenient for display and operation.

For reaching the above-mentioned purpose, the embodiment of the present invention adopts the following technical solutions:

A smart blackboard is provided, comprising an electronic flat panel and at least one writing board spliced on one side of the electronic flat panel, the electronic flat panel includes a display module and a first splicing frame located on the splicing side of the electronic flat panel, the display The module includes a cover plate, the first splicing frame is installed on the back side of the cover plate, the writing board includes a writing body and a second splicing frame located on the splicing side of the writing board, the second splicing frame It includes a first frame plate, a pressing plate and a second frame plate connecting the first frame plate and the pressing plate, the first frame plate is connected with the back side of the writing body, and the pressing plate is pressed against the a side of the second splicing frame away from the cover plate;

Both ends of the first splicing frame in the length direction are connected with a first fixing piece, both ends of the second splicing frame in the length direction are connected with a second fixing piece, and the first fixing piece is provided with a second fixing piece. A guide slope, the second fixing member is provided with a second guide slope, and a third fixing member is also arranged at the splicing point of the electronic tablet and the writing board, and the third fixing member includes a clamping plate and two The limit plates are arranged at intervals on the same side of the clip plate, the clip plate and the two limit plates enclose a clip slot, and the first fixing member and the second fixing member are clipped together In the latching groove, the two limiting plates are respectively provided with matching inclined surfaces corresponding to the first guiding inclined surface and the second guiding inclined surface, so that the third fixing member can be fixed with the first guiding surface. When the first fixing piece and the second fixing piece are clamped, the first fixing piece and the second fixing piece can be pulled into close contact.

As a preferred solution of the smart blackboard, it also includes a reinforced pressing block, the reinforced pressing block includes a pressing block body and two pressing block connecting pieces, and the two pressing block connecting pieces are both connected to the pressing block body;

At least one group of notch groups is spaced on the pressing plate along its length direction, each group of the notch groups includes two avoidance notches, and the two pressure block connectors are respectively arranged in the two avoidance notches and pass through the two avoidance notches. The screw is connected with the first splicing frame, and the pressing block body is pressed against a side of the pressing plate away from the first splicing frame.

As a preferred solution of the smart blackboard, the first fixing member includes a first connecting part and a first convex part that are connected to each other, the first connecting part is connected with the first splicing frame by screws, and the first connecting part is connected with the first splicing frame. the guide slope is arranged on the first convex part;

The second fixing piece includes a second connecting part and a second convex part that are connected, the second connecting part is connected with the second splicing frame by screws, and the second guiding slope is arranged on the second convex part. Ministry.

As a preferred solution of the smart blackboard, the first convex part and the second convex part are provided with splicing threaded holes, the clamping plate is provided with splicing through holes, and the splicing screws pass through the splicing through holes The splice screw is screwed into the splice screw hole to connect the snap plate with the first convex part and the second convex part respectively, and the axis of the splice screw is parallel to the cover plate.

As a preferred solution of the smart blackboard, the electronic flat panel includes a first upper frame located above the display module, and the display module further includes a backplane disposed on the back side of the cover plate. A wall hanging assembly is connected to the side of the board away from the cover plate, the wall hanging assembly includes a wall hanging plate and a first wall hanging strip, the first wall hanging strip includes a third connecting part and a fixing part arranged at an included angle, the fixing part The end of the third connecting part away from the fixing part is connected to the first upper frame; the wall hanging plate is fixed on the wall, so The side of the first wall hanging strip away from the back plate is provided with a first hook with an opening facing downward, and the first wall hanging strip is hung on the wall hanging plate.

As a preferred solution of the smart blackboard, the back plate includes a base plate, four sides of the base plate extend toward the cover plate with a surrounding plate, and one end of the surrounding plate away from the base plate faces the outside of the surrounding plate A connecting plate is extended, the connecting plate is connected with the first upper frame, a accommodating groove is formed between the surrounding plate and the base plate, and the connecting portion is attached to the position of the surrounding plate far from the accommodating groove. one side.

As a preferred solution of the smart blackboard, the first upper frame is provided with a first rear shell, and the first rear shell shields a side surface of the first upper frame close to the first wall hanging strip and the surrounding The part of the board adjacent to the first upper frame, the first rear shell is connected to the base plate, the first rear shell is provided with an escape groove corresponding to the connecting part, and the third connecting part is inserted in the In the avoidance groove, the first upper frame is provided with threaded holes, the third connecting part and the groove bottom of the avoidance groove are provided with through holes corresponding to the threaded holes, and the screws pass through the threaded holes. The through hole on the third connecting part and the through hole at the bottom of the escape groove are then screwed into the threaded hole.

As a preferred solution of the smart blackboard, the wall-mounted board includes a connected wall-mounted frame and a hanging bar, the wall-mounted frame is arranged on the back side of the electronic tablet, and the hanging bar is arranged on the back side of the writing board , and the length of the hanging bar extends in the horizontal direction, the back side of the writing board is connected with a second wall hanging bar, and the second wall hanging bar is hung with the hanging bar.

As a preferred solution of the smart blackboard, the display module further includes a backplane disposed on the back side of the cover plate, the backplane is rectangular, and the backplane includes a substrate, and four sides of the substrate Both extend toward the same side of the base plate with a surrounding plate, and one end of the surrounding plate away from the base plate extends toward the outer side of the surrounding plate with a connecting plate, and the surrounding plate includes two spaced apart along the vertical direction. a surrounding wall and two second surrounding walls spaced along the horizontal direction;

A reinforcing structure is punched and formed on the base plate toward the side away from the enclosure plate. The reinforcing structure includes a main beam, a sub-beam and a first reinforcing rib, and two are symmetrically arranged along the vertical direction on the base plate along its center. The extended main beam, both ends of the main beam in the length direction respectively extend to the two first surrounding walls, between each of the main beams and the second surrounding wall adjacent to the main beam Connected by one of the sub-beams, a first reinforcement area is formed between the main beam, the sub-beam, the second surrounding wall and the first surrounding wall located above. There are two Each of the first reinforcement areas is provided with the first reinforcement ribs.

As a preferred solution of the smart blackboard, the main beam, the sub-beam and the first reinforcing rib are all protruding from the side of the base plate away from the enclosure, and the main beam is protruding from all the The height of the base plate is H1, the height of the sub-beam protruding from the base plate is H2, and the height of the first reinforcing rib protruding from the base plate is H3, wherein H2<H1, H3≤H2.

As a preferred solution of the smart blackboard, one end of the writing body away from the second splicing frame is detachably provided with a shielding frame, and one end of the shielding frame away from the writing body is in contact with the wall, and the shielding frame It is an internal hollow frame structure. Both ends of the shielding frame along the vertical direction are provided with openings that communicate with the interior. The end face of the shielding frame with the opening is an installation end face, and the installation end face can be detachably set. There is a protection piece for shielding the installation end face and blocking the opening.

As a preferred solution of the smart blackboard, the protector is connected to the shielding frame through a snap mechanism.

As a preferred solution of the smart blackboard, a side of the shielding frame away from the wall is flush with the front side of the writing body.

As a preferred solution of the smart blackboard, a camera assembly is also provided on the electronic tablet, and the camera assembly includes:

a positioning piece, which is arranged on the back side of the cover plate, and a positioning through hole is opened on the positioning piece;

a module bracket, which is connected with the positioning member, and a mounting hole communicated with the positioning through hole is opened on the module bracket;

a lens module, arranged in the mounting hole;

A board bracket is connected to the first upper frame of the electronic tablet, a camera board electrically connected to the lens module is fixed on the board bracket, and a The lens module is pressed against the pressing portion in the mounting hole.

As a preferred solution of the smart blackboard, one of the positioning member and the module bracket is protruded with a fourth positioning column, and the other of the positioning member and the module bracket is provided with a fourth positioning column. A fourth positioning hole that is inserted and matched with the fourth positioning column is opened on the top.

As a preferred solution of the smart blackboard, the positioning member is adhered to the back side of the cover plate; and/or,

The module bracket is bonded on the positioning member.

As a preferred solution of the smart blackboard, a first lower frame is further arranged below the display module, and both ends of the first lower frame in the length direction can be detachably connected with corner pieces;

The first lower frame includes a lower frame body, the lower frame body has a first side on the same side as the front side of the cover plate, and the first side is provided with a spaced and protruding structure for supporting the cover plate. A support protrusion and a storage protrusion for placing items, the height of the support protrusion protruding from the first side is L1, and the height of the storage protrusion protruding from the first side is L2, L2 is larger than L1, and the protruding portion of the object storage protrudes from the front side of the cover plate, the lower frame body is provided with an accommodation cavity, and the end surface of the frame body connected to one end of the corner piece is provided with a connection with the a first opening communicating with the accommodating cavity;

The corner piece includes a corner body, the corner body can be inserted into the accommodating cavity through the first opening, the corner body is connected with the lower frame body by screws, and an arc is protruded on the corner body. A convex part and a connecting convex part, one end of the connecting convex part is in contact with the end of the supporting convex part in the length direction, and the other end is connected to the arc-shaped convex part, and the arc-shaped convex part is far away from the connection One end of the convex portion is in contact with the end portion in the longitudinal direction of the storage convex portion.

As a preferred solution of the smart blackboard, the corner body has a corner side surface on the same side as the front side surface of the cover plate, and the height of the connecting convex portion protruding from the corner side surface is L3, L3-L1=H4 , H4 is not less than 0.1mm; and/or,

The height of one end of the arc-shaped convex portion connected to the storage convex portion protruding from the side surface of the corner is L4, L4-L2=H5, and H5 is not less than 0.1 mm.

As a preferred solution of the smart blackboard, the height of the arc-shaped convex portion gradually decreases from the end connecting the storage convex portion toward the end connecting the connecting convex portion, and the arc-shaped convex portion is connected to the The height of one end of the connecting protrusion is equal to the height of the connecting protrusion.

The beneficial effects of the embodiment of the present invention are: by setting the first splicing frame of the pressing plate against the electronic tablet on the writing board, the misalignment of the splicing place between the writing board and the electronic tablet can be corrected, and the step difference at this position can be eliminated. The three fixing pieces with inclined planes can pull the first fixing piece and the second fixing piece to be close to each other through the clamping of the third fixing piece and the cooperation of the inclined surface after the electronic tablet and the writing board are spliced, and then the electronic tablet and the writing board can be pulled. The boards are tightly attached, and at the same time, the clamping plate of the third fixing piece can also limit the positions of the first fixing piece and the second fixing piece, so as to ensure that the spliced electronic tablet and the writing board are not dislocated in the vertical direction. The splicing operation of the electronic flat board and the writing board of the smart blackboard of the utility model is simple, there is no obvious step difference after splicing, the surface is flat, and the display and operation are convenient.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

FIG. 1 is a perspective view of a smart blackboard according to an embodiment of the present invention from a first perspective.

FIG. 2 is a perspective view of the smart blackboard according to the embodiment of the present invention from a second perspective.

FIG. 3 is an enlarged schematic diagram of part A of FIG. 2 .

4 is a schematic diagram of the assembly of the first fixing member, the second fixing member and the third fixing member according to the embodiment of the present invention.

FIG. 5 is a schematic structural diagram of a second splicing frame according to an embodiment of the present invention.

FIG. 6 is a schematic structural diagram of a reinforced pressing block according to an embodiment of the present invention.

FIG. 7 is an enlarged schematic diagram of part B of FIG. 2 .

FIG. 8 is an enlarged schematic view of C in FIG. 2 .

FIG. 9 is a schematic structural diagram of a backplane according to an embodiment of the present invention.

10 is a schematic structural diagram of a first wall hanging bar according to an embodiment of the present invention.

11 is a schematic structural diagram of a second wall hanging bar according to an embodiment of the present invention.

FIG. 12 is a schematic structural diagram of a first rear case according to an embodiment of the present invention.

FIG. 13 is a schematic structural diagram of a wall-mounted splicing piece according to an embodiment of the present invention.

14 is a schematic side view of the smart blackboard after hanging on the wall according to the embodiment of the present invention.

FIG. 15 is a schematic structural diagram of a shielding frame according to an embodiment of the present invention.

FIG. 16 is an enlarged schematic diagram of the point D of FIG. 15 .

FIG. 17 is a schematic structural diagram of a protection member according to an embodiment of the present invention.

18 is a schematic structural diagram of a second splicing piece according to an embodiment of the present invention.

19 is a schematic cross-sectional view of an electronic tablet according to an embodiment of the present invention.

FIG. 20 is an enlarged schematic view of the position E of FIG. 19 .

FIG. 21 is a schematic structural diagram of a positioning member according to an embodiment of the present invention.

FIG. 22 is a schematic perspective view of a board bracket according to an embodiment of the present invention from a first perspective.

FIG. 23 is a schematic perspective view of the board bracket according to the embodiment of the present invention from a second perspective.

FIG. 24 is a schematic structural diagram of a light guide column according to an embodiment of the present invention.

FIG. 25 is an enlarged schematic view of F in FIG. 19 .

FIG. 26 is a schematic structural diagram of a first lower frame according to an embodiment of the present invention.

FIG. 27 is an enlarged schematic view of G in FIG. 26 .

28 is a partial cross-sectional view of an electronic tablet according to an embodiment of the present invention.

FIG. 29 is a schematic structural diagram of a corner piece according to an embodiment of the present invention.

In the picture:

1. Electronic tablet; 11. The first splicing frame; 12. Cover plate; 13. The first fixing part; 131, The first guiding slope; 132, The first connecting part; 133, The first convex part; 14, the first upper frame; 15, the back plate; 151, the base plate; 152, the enclosure plate; 153, the connecting plate; 154, the main beam; 1541, the main beam connecting hole; Beam; 156, the first reinforcing bar; 1561, the first reinforcing bar; 1562, the second reinforcing bar; 1563, the third reinforcing bar; 157, the connecting beam; 158, the second reinforcing bar; 159, the first auxiliary beam; 1510 , the second auxiliary beam; 1511, the third reinforcing rib; 16, the first rear shell; 161, the avoidance groove; 17, the first lower frame; 171, the lower frame body; 1711, the first side; 1712, the second side; 1713, third side; 1714, accommodating cavity; 1715, first opening; 1716, second opening; 172, support protrusion; 173, storage protrusion; 174, hook; 18, second rear shell; 19, first Three rear shells; 110, corner piece; 1101, corner body; 1102, arc convex part; 1103, connecting convex part; 1104, limiting convex part; 1105, plug part; 111, inner frame; 1111, inner frame card mouth; 112, corner piece;

2. Writing board; 21. The second splicing frame; 211, The first frame board; 212, The second frame board; 232, the second connecting part; 233, the second convex part; 234, the second limiting part; 24, the blocking frame; 241, the opening; 242, the installation end face; 243, the connecting bayonet; 244, the frame Main body; 245, connecting convex edge; 246, abutting convex edge; 25, protective piece; 251, connecting buckle; 26, second upper frame; 27, second lower frame; 28, second splicing piece; 281, first Three positioning columns;

3. The third fixing piece; 31, the snap plate; 311, the splicing through hole; 32, the limit plate; 321, the matching slope;

4. Strengthen the pressure block; 41. The pressure block body; 42. The pressure block connecting piece;

5. Wall-mounted assembly; 51. Wall-mounted board; 511, Wall-mounted frame; 512, Hanging strip; 513, Wall-mounted splicing piece; 5131, splicing plate; 5132, baffle; 521, the third connecting part; 522, the fixing part; 523, the first hook; 53, the second wall hanging bar; 531, the second hook;

6. Camera assembly; 61, Positioning member; 611, Positioning through hole; 612, Fourth positioning hole; 62, Module bracket; 63, Lens module; 64, Board bracket; 641, Abutting part; A pressing plate; 6412, the second pressing plate; 642, the first mounting plate; 643, the second mounting plate; 6431, the light guide hole; 644, the third mounting plate; 65, the camera card; 651, the signal lamp; 66, light guide column; 661, light guide body; 662, light guide column limiter;

7. Functional modules.

Detailed ways

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only Some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or a fixed connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal connection between two elements or an interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Referring to Figures 1 and 2, the front side of the smart blackboard, electronic tablet 1 or writing board 2 in the present invention refers to: the side that the user can see or write on, and the back side is a side opposite to the front side. side, usually the back side faces the wall.

As shown in FIGS. 1 to 6 , the smart blackboard according to the embodiment of the present invention includes an electronic flat panel 1 and at least one writing board 2 spliced on one side of the electronic flat panel 1 . The electronic flat panel 1 includes a display module and a splicing panel located on the electronic panel 1 The first splicing frame 11 on the side, the display module includes a cover 12, the first splicing frame 11 is installed on the back side of the cover 12, the writing board 2 includes a writing body 22 and a second splicing frame on the splicing side of the writing board 2 21. The second splicing frame 21 includes a first frame plate 211, a pressing plate 213, and a second frame plate 212 connecting the first frame plate 211 and the pressing plate 213. The first frame plate 211 is connected to the back side of the writing body The pressing plate 213 is pressed against the side of the second splicing frame 21 away from the cover plate 12; A second fixing member 23 is connected, the first fixing member 13 is provided with a first guiding inclined surface 131, the second fixing member 23 is provided with a second guiding inclined surface 231, and the splicing part of the electronic tablet 1 and the writing board 2 is also provided with a third The fixing member 3, the third fixing member 3 includes a clamping plate 31 and two limit plates 32 arranged at intervals on the same side of the clamping plate 31, the clamping plate 31 and the two limit plates 32 enclose a clamping groove, The first fixing member 13 and the second fixing member 23 are clamped in the clamping groove, and the two limiting plates 32 are respectively provided with matching inclined surfaces 321 corresponding to the first guiding inclined surface 131 and the second guiding inclined surface 231, so that the third fixing member 3. When engaging with the first fixing member 13 and the second fixing member 23, the first fixing member 13 and the second fixing member 23 can be pulled to be closely attached. By setting the pressing plate 213 on the writing board 2 to press the first splicing frame 11 of the electronic tablet 1, the misalignment at the splicing position of the writing board 2 and the electronic tablet 1 can be corrected, and the step difference at this position can be eliminated. The three fixing pieces can pull the first fixing piece 13 and the second fixing piece 23 to be close to each other through the clamping of the third fixing piece 3 and the cooperation of the inclined plane after the electronic tablet 1 and the writing board 2 are spliced, and then pull the electronic tablet 1 It is closely attached to the writing board 2, and at the same time, the clamping plate 31 of the third fixing member 3 can also limit the positions of the first fixing member 13 and the second fixing member 23, so as to ensure that the spliced electronic tablet 1 and the writing board 2 are in the vertical position. There is no misalignment in the straight direction. The splicing operation of the electronic flat board 1 and the writing board 2 of the smart blackboard of the utility model is simple, there is no obvious step difference after splicing, and the surface is flat, which is convenient for display and operation.

The smart blackboard also includes a reinforced pressing block 4. The reinforced pressing block 4 includes a pressing block body 41 and two pressing block connecting pieces 42. The two pressing block connecting pieces 42 are both connected to the pressing block body 41; There are at least one group of notch groups at intervals, each group of notch groups includes two avoidance notches 214, and the two pressure block connectors 42 are respectively arranged in the two avoidance notches 214 and are connected with the first splicing frame 11 by screws. 41 is pressed against a side of the pressing plate 213 away from the first splicing frame 11 . By setting the reinforcing pressing block 4, the flanging of the pressing plate 213 can be effectively prevented, so that the pressing plate 213 can always be in the position of pressing the first splicing frame 11, thereby eliminating the segment deviation in the length direction of the splicing side, that is, ensuring the electronic Flat 1 and writing board 2 are flat at the joint.

The first fixing member 13 includes a first connecting portion 132 and a first convex portion 133 that are connected to each other, the first connecting portion 132 is connected with the first splicing frame 11 by screws, and the first guiding slope 131 is arranged on the first convex portion 133; The second fixing member 23 includes a connected second connecting portion 232 and a second convex portion 233 . The second connecting portion 232 is connected to the second splicing frame 21 by screws, and the second guiding slope 231 is disposed on the second convex portion 233 .

The first protruding portion 133 and the second protruding portion 233 are both provided with splicing threaded holes, and the clamping plate 31 is provided with splicing through holes 311, and the splicing screws pass through the splicing through holes 311 and are screwed into the splicing threaded holes to connect the clamping The plate 31 is connected with the first convex portion 133 and the second convex portion 233 respectively, and the axis of the splice screw is parallel to the cover plate 12 . By setting the splicing screws, the third fixing member 3 can be moved to the first fixing member 13 and the second fixing member 23 can be fixed in this position after being inserted into the clamping groove, so as to prevent the third fixing member 3 from being moved at will and ensure the electronic tablet The splicing of 1 and writing board 2 does not fail.

Further, one end of the first convex portion 133 away from the first connecting portion 132 is connected with a first limiting portion 134 , and the first limiting portion 134 is disposed at one end of the limiting plate 32 away from the clamping plate 31 . 134 extends toward the side away from the second fixing member 23 , and one end of the second protruding portion 233 away from the second connecting portion 232 is connected with a second limiting portion 234 , and the second limiting portion 234 is disposed on the limiting plate 32 away from the clamping At one end of the plate 31 , the second limiting portion 234 extends toward the side away from the first fixing member 13 . The arrangement of the first limiting portion 134 and the second limiting portion 234 can reduce the difficulty of assembling the third fixing member 3 with the first fixing member 13 and the second fixing member 23 , and can also prevent the third fixing member 3 from being assembled after the assembly. Move and detach the first fixing member 13 and the second fixing member 23 along the thickness direction of the smart blackboard.

In one embodiment, as shown in FIGS. 2 , 7 to 13 , the electronic flat panel 1 includes a first upper frame 14 located above the display module, and the display module further includes a back plate 15 disposed on the back side of the cover plate 12 The side of the back plate 15 away from the cover plate 12 is connected with a wall hanging assembly 5. The wall hanging assembly 5 includes a wall hanging plate 51 and a first wall hanging strip 52. The first wall hanging strip 52 includes a third connecting portion 521 and a fixing portion arranged at an angle. 522, the fixing part 522 is attached to the side of the back plate 15 away from the cover plate 12, the end of the third connecting part 521 away from the fixing part 522 is connected to the first upper frame 14, the wall hanging plate 51 is fixed on the wall, the first wall hanging A first hook 523 with an opening facing downward is provided on the side of the bar 52 away from the back panel 15 , and the first wall hanging bar 52 is hung on the wall hanging plate 51 . By not arranging a back shell at the part of the back panel 15 connected to the wall hanging assembly 5, that is, the back panel 15 is directly connected to the wall hanging assembly 5, the distance between the smart blackboard and the wall after hanging on the wall can be reduced, and the first wall hanging strip 52 is arranged in a clipped shape. The third connecting part 521 and the fixing part 522 are connected at the corners. The third connecting part 521 is fixed on the first upper frame 14, so that the wall hanging assembly 5 moves upward as a whole, which can not only shorten the length of the first wall hanging The force on the back plate 15 is dispersed to the first upper frame 14 to prevent the back plate 15 from being deformed.

Specifically, the back plate 15 includes a base plate 151 , four sides of the base plate 151 extend toward the cover plate 12 with a surrounding plate 152 , and one end of the surrounding plate 152 away from the base plate 151 extends toward the outer side of the surrounding plate 152 with a connecting plate 153 , and the surrounding plate 152 is connected to the outer side of the surrounding plate 152 . An accommodating groove is formed between the substrates 151 , and the third connecting portion 521 is attached to a side of the enclosure plate 152 away from the accommodating groove. The back plate 15 needs to support the optical film assembly of the display module and the cover plate 12, and needs to be provided with a light emitting assembly on one side close to the optical film assembly. Therefore, the setting of the accommodating groove can provide installation space for the light emitting assembly, and The setting of the connecting plate 153 can support the optical film assembly and the cover plate 12, and at the same time isolate the optical film assembly from the light-emitting assembly, so that the heat generated on the light-emitting assembly will not be transferred to the optical film assembly, and the electronic flat panel 1 can be improved. the overall display effect.

In this embodiment, the enclosure plate 152 and the base plate 151 are arranged at an obtuse angle. Therefore, the enclosure plate 152 is an inclined structure. The included angles are the same, so that the third connecting portion 521 and the fixing portion 522 can be attached to the enclosure plate 152 and the base plate 151 respectively.

The first upper frame 14 is provided with a first rear casing 16 . The first rear casing 16 shields a side surface of the first upper frame 14 close to the first wall hanging bar 52 and a portion of the enclosure plate 152 adjacent to the first upper frame 14 . The rear case 16 is connected to the base plate 151 , the first rear case 16 is provided with an escape groove 161 corresponding to the third connection portion 521 , the third connection portion 521 is inserted in the escape groove 161 , and the first upper frame 14 is provided with a threaded hole, The third connecting portion 521 and the groove bottom of the escape groove 161 are provided with through holes corresponding to the threaded holes. inside a threaded hole of the upper frame 14 . By arranging the first rear case 16, the gap at the first upper frame 14 on the rear side of the electronic tablet 1 and the electronic components can be shielded, so as to beautify the appearance of the electronic tablet 1, and the avoidance groove 161 is provided to prevent the first rear The shell 16 prevents the first wall hanging bar 52 from being connected to the first upper frame 14 .

Preferably, a side surface of the first rear case 16 away from the first upper frame 14 is flush with a side surface of the base plate 151 of the back panel 15 away from the accommodating slot. In order to realize the above structure, a stepped groove may be provided on the base plate 151 to accommodate the part of the first rear case 16 connected to the base plate 151 by using the stepped groove to prevent the first rear case 16 from protruding at this position.

Further, the first wall hanging bar 52 is formed by bending a sheet metal material, and the third connecting portion 521 includes a first body in the shape of a flat plate and a first reinforcing edge that is bent toward a side away from the enclosure plate 152 along its width direction, The fixing portion 522 includes a second body in the shape of a flat plate and a second reinforcing edge bent along its width direction toward a side surface away from the base plate 151. The first hook 523 is opened on the second reinforcing edge. The two bodies are connected, and the other end extends with a first connecting edge. The first connecting edge is attached to the groove bottom of the escape groove 161 and is fixedly connected to the groove bottom of the escape groove 161 and the first upper frame 14 by screws.

The electronic tablet 1 further includes a second rear case 18 located at the first lower frame 17 below the display module. The second rear case 18 shields a side of the first lower frame 17 close to the first wall hanging strip 52 and the surrounding plate 152 adjacent to the side. At the portion of the first lower frame 17 , the second rear case 18 is connected to the substrate 151 . By arranging the second rear case 18 , the gap at the first lower frame 17 on the rear side of the electronic tablet 1 and the electronic components can be shielded, so as to beautify the appearance of the electronic tablet 1 .

Preferably, a side surface of the second rear shell 18 away from the first lower frame 17 is flush with a side surface of the base plate 151 of the back panel 15 away from the accommodating slot. In order to realize the above structure, a stepped groove may be provided on the base plate 151 to accommodate the part of the second rear case 18 connected to the base plate 151 by using the stepped groove to prevent the second rear case 18 from protruding at this position.

Preferably, the fixing portion 522 is fixed on the back plate 15 by screws. By also fixing the fixing portion 522 on the back plate 15 by screws, the connection stability of the first wall hanging bar 52 can be enhanced.

In this embodiment, two main beams 154 are arranged on the back plate 15 , the main beams 154 extend in the vertical direction, the two main beams 154 are symmetrically arranged along the center of the back plate 15 , and two main beams 154 are arranged on the back side of the electronic tablet 1 . The first wall hanging bars 52, the fixing portions 522 of the two first wall hanging bars 52 are respectively fixed on the main beam 154 by screws. By arranging the main beam 154, the strength of the backboard 15 can be enhanced to prevent the backboard 15 from being deformed, and the number of the first wall hanging bars 52 can be divided into two, which can distribute the weight of the entire electronic tablet 1 (even the smart blackboard), and also can To improve the stability of the wall hanging, the fixing portion 522 of the first wall hanging bar 52 is connected to the main beam 154, which can effectively prevent the back plate 15 from being deformed.

Specifically, the back plate 15 is integrally formed by punching, and the main beam 154 is punched and formed from the base plate 151 toward the side away from the accommodating groove. The one-piece back plate 15 has good integrity, high strength, is not easily deformed, is easy to be exposed, and has a beautiful appearance.

In addition, the back plate 15 is also provided with an installation area for installing the control main board, the installation area is blocked by the third rear shell 19, and the side of the third rear shell 19 away from the back plate 15 is flush with the side of the wall-mounted board 51 close to the wall surface or interval. By arranging each rear shell to block the positions of the electronic components on the backplane 15 (such as the control motherboard, power supply, switching circuit board, etc.), these electronic components can be protected, and the electronic tablet 1 and even the entire smart The blackboard has a beautiful appearance.

The wall hanging board 51 includes a connected wall hanging frame 511 and a hanging bar 512, the wall hanging frame 511 is arranged on the back side of the electronic tablet 1, the hanging bar 512 is arranged on the back side of the writing board 2, and the length of the hanging bar 512 extends in the horizontal direction, A second wall hanging bar 53 is connected to the back side of the writing board 2 , and the second wall hanging bar 53 is hung with the hanging bar 512 . By arranging the wall hanging frame 511 of the frame structure to hang the electronic tablet 1, and using the hanging bar 512 of the strip structure to hang the writing board 2, the use of materials can be reduced while ensuring sufficient suspension strength, and the weight of the writing board 2 is much smaller than that of the electronic tablet 1. Therefore, there is no need to set the wall hanging frame 511 of the frame structure to hang the writing board 2, which effectively reduces the cost.

Specifically, the second wall hanging bar 53 is formed by bending a sheet metal material, and the second wall hanging bar 53 includes a third body in the shape of a flat plate. The third reinforcing edge, the third reinforcing edge is provided with a second hook 531 with an opening facing downward, the second hook 531 is hooked to the hanging bar 512, the third body is spaced from the back side of the writing board 2, and the third body is also provided with There is a second connecting edge bent towards the writing board 2, and the end of the second connecting edge away from the third body extends toward the outside of the second wall hanging bar 53 with a third connecting edge, and the third connecting edge is connected to the back of the writing board 2 through screws. Side connection.

In this embodiment, the hanging bar 512 is connected to the wall hanging frame 511 through a wall hanging splicing piece 513, and the wall hanging splicing piece 513 includes a splicing plate 5131 and a baffle plate 5132 arranged at an included angle, and the splicing plate 5131 is respectively connected to the hanging bar 512 and the wall hanging by screws. The frame 511 and the baffle 5132 abut on the upper end surface of the hanging bar 512 and the wall hanging frame 511 . By arranging the L-shaped wall hanging splicing piece 513, the hanging bar 512 and the wall hanging frame 511 can be connected, and the difficulty of aligning the two during splicing can also be reduced. The ends of the wall hanging frame 511 abut against each other, and the ends of the hanging bars 512 abut against the upper end of the wall hanging frame 511 and the baffle plate 5132 , and then the connection can be achieved by screwing the screws.

In order to further reduce the difficulty of assembling, two first positioning columns 5133 are protruded from the splicing plate 5131, and a first positioning hole is respectively provided on the hanging bar 512 and the wall hanging frame 511, and the first positioning column 5133 is inserted into the first positioning hole . Of course, in other embodiments, the positions of the first positioning post 5133 and the first positioning hole can also be interchanged, that is, the splicing plate 5131 has two first positioning holes, and the hanging bar 512 and the wall hanging frame 511 are respectively provided with one and the first positioning hole. A first positioning post 5133 inserted into a positioning hole.

As shown in FIG. 9 , the back panel 15 is rectangular, and the enclosure panel 152 of the back panel 15 includes two first enclosure walls spaced apart in the vertical direction and two second enclosure walls spaced apart in the horizontal direction; A reinforcing structure is formed by punching toward the side away from the enclosure plate 152. The reinforcing structure includes a main beam 154, a sub-beam 155 and a first reinforcing rib 156. Two main beams 154 extending in the vertical direction are symmetrically arranged on the base plate 151 along its center. , the two ends of the main beam 154 in the length direction respectively extend to two first surrounding walls, each main beam 154 and the second surrounding wall adjacent to the main beam 154 are connected by a sub-beam 155, the main beam 154, the sub-beam 155. A first reinforcement area is formed between the second surrounding wall and the first surrounding wall located above. There are two first reinforcement areas on the base plate 151, and each first reinforcement area is provided with a first reinforcement rib 156 . By directly punching the back plate 15 to form the reinforcing structure, it is possible to avoid manufacturing the reinforcing structure separately, and at the same time, the process of assembling the reinforcing structure can be omitted, so as to improve the production efficiency and reduce the cost, and the reinforcing structure formed integrally with the back plate 15 can improve the The integrity and strength of the entire back plate 15 can effectively prevent the back plate 15 from being deformed; by setting the first reinforcement area, the two first reinforcement areas are respectively located at the left and right corners above the back plate 15, and the first reinforcement areas located on both sides are located at the left and right corners. The first reinforcing ribs 156 are formed by stamping in the area, which can increase the strength of the two sides above the backboard 15. The backboard 15 can be used in a smart blackboard to ensure that the backboard 15 after splicing is not deformed.

The smart blackboard is generally composed of an electronic tablet 1 and two writing boards 2 arranged on both sides of the electronic tablet 1 respectively. The position is subjected to more tension, and deformation is most likely to occur at this position. Therefore, the first reinforcing rib 156 is particularly provided at this position of the back plate 15 to effectively prevent the back plate 15 from being deformed.

Further, the main beam 154 , the sub-beam 155 and the first reinforcing rib 156 all protrude from the side of the base plate 151 away from the enclosure plate 152 , and the height of the main beam 154 protruding from the base plate 151 is H1 , and the sub-beam 155 protrudes from the base plate 151 . The height of the base plate 151 is H2, and the height of the first reinforcing rib 156 protruding from the base plate 151 is H3, wherein H2<H1, H3≤H2. By setting the height of the main beam 154 protruding from the base plate 151 to be higher, the main beam 154 can bear the main gravity of the electronic tablet 1, and both the sub-beam 155 and the first reinforcing rib 156 are set to a height lower than the main beam 154, On the premise of ensuring sufficient support strength, the use of materials is reduced and the cost is reduced. In this embodiment, the surfaces of the sub-beam 155 and the first reinforcing rib 156 are flush.

In addition, an arc transition structure is provided at the connection between the sub-beam 155 and the main beam 154 . The arc transition structure can avoid the formation of stress concentration at the connection of the main beam 154 and the sub-beam 155 .

A connecting beam 157 is punched and formed on the base plate 151 toward the side away from the enclosure plate 152. The connecting beam 157 connects the two main beams 154, and the connecting beam 157 and the two sub-beams 155 are located on the same horizontal plane; the base plate 151 faces away from the enclosure plate 152. A second reinforcing rib 158 is punched and formed on one side of the frame, and a second reinforcing area is formed between the two main beams 154, the connecting beam 157 and the first surrounding wall located above, and the second reinforcing rib 158 is located in the second reinforcing area. The arrangement of the connecting beams 157 can strengthen the strength between the two main beams 154 .

Specifically, the two main beams 154 and the connecting beam 157 are both disposed adjacent to the center of the back plate 15 in the vertical direction.

A first auxiliary beam 159 is punched and formed on the base plate 151 toward the side away from the enclosure plate 152 . The first auxiliary beam 159 is disposed in the second reinforcement area. The first auxiliary beam 159 extends in the horizontal direction, and its two ends are connected to two The main beam 154 and the first auxiliary beam 159 are spaced apart from the connecting beam 157 and the first surrounding wall located above, respectively.

A third reinforcement area is formed between the two main beams 154 , the connecting beam 157 and the first surrounding wall located below. A second auxiliary beam 1510 is punched and formed on the base plate 151 toward the side away from the surrounding plate 152 . The second auxiliary beam 1510 In the third reinforcement area, the second auxiliary beam 1510 extends in the horizontal direction, and two main beams 154 are respectively connected at both ends thereof. The second auxiliary beam 1510 is spaced apart from the connecting beam 157 and the first surrounding wall located below.

In addition, a third reinforcing rib 1511 is also provided in the third reinforcing area. The third reinforcing rib 1511 and the back plate 15 are integrally stamped and formed. The connecting beam 157 and the second auxiliary beam 1510 are connected.

Further, the first reinforcing rib 156 includes a first reinforcing bar 1561, a second reinforcing bar 1562 and a third reinforcing bar 1563, the first end of the first reinforcing bar 1561 extends to the first surrounding wall located above, and the first reinforcing bar 1561 The first end of the bar 1561 is spaced from the second surrounding wall, the first end of the second reinforcing bar 1562 is connected to the main beam 154, the first end of the third reinforcing bar 1563 is connected to the sub-beam 155, and the second end of the first reinforcing bar 1561 , The second end of the second reinforcing bar 1562 is connected to the second end of the third reinforcing bar 1563 .

The center line of the second reinforcing bar 1562 and the center line of the third reinforcing bar 1563 intersect at one point, and the center line of the first reinforcing bar 1561 intersects the center line of the second reinforcing bar 1562 and the center line of the third reinforcing bar 1563 Stagger the settings a bit.

Specifically, the second reinforcing bar 1562 is perpendicular to the main beam 154, and the first end of the second reinforcing bar 1562 is spaced apart from the end of the main beam 154 and the position where the main beam 154 is connected to the sub-beam 155; the third reinforcing bar 1563 It is perpendicular to the sub-beam 155 , and the first end of the third reinforcing bar 1563 is spaced from both ends of the sub-beam 155 in the longitudinal direction. One end of the sub-beam 155 away from the main beam 154 extends to the shroud 152 .

Further, the first enclosure wall is spaced with enclosure wall reinforcements along its length direction, the second enclosure wall is spaced along its length direction with enclosure wall reinforcements, and the enclosure wall reinforcements are punched from the outside of the enclosure plate 152 toward the inside. After forming, the reinforcing part of the surrounding wall protrudes from the inner wall of the surrounding plate 152 . Setting the enclosure wall reinforcements whose punching directions are opposite to the main beam 154 , the auxiliary beam 155 , the first reinforcing rib 156 and other components can enhance the strength of the enclosure plate 152 . The connecting plate 153 on the enclosure plate 152 is generally used to support the Therefore, the strength of the enclosure plate 152 is also required for the optical film assembly. The arrangement of the enclosure wall reinforcement can greatly enhance the strength of the enclosure plate 152 and ensure that the enclosure plate 152 does not deform.

In addition, the main beam 154 is provided with a plurality of main beam connection holes 1541 along its length direction. The main beam connection holes 1541 are used to connect the wall hanging bars. The reinforcing convex portion 1542 is protruded toward the inner side of the enclosure plate 152 .

As shown in FIGS. 1 and 14 to 18 , the end of the writing body 22 away from the second splicing frame 21 is detachably provided with a shielding frame 24 , and the end of the shielding frame 24 away from the writing body 22 is in contact with the wall, and the shielding frame 24 is inside Hollow frame structure, both ends of the shielding frame 24 along the vertical direction are provided with openings 241 communicating with its interior, the end face of the shielding frame 24 with the opening 241 is an installation end face 242, and the installation end face 242 is detachably provided with a shielding installation end face 242 and the protector 25 closing the opening 241 . By setting the shielding frame 24, the gap between the left and right ends of the smart blackboard and the wall can be sealed, so that the appearance of the entire smart blackboard is beautiful. It is not easy to shake; by setting the hollow shielding frame 24, the weight and manufacturing cost of the shielding frame 24 can be reduced, thereby reducing the overall weight of the entire smart blackboard; When the operator is cleaning the smart blackboard, his hand is scratched at the place where the frame 24 is shielded.

In this embodiment, the protection member 25 is connected to the shielding frame 24 through a buckle mechanism. The buckle mechanism connects the protection member 25 and the shielding frame 24 , which can facilitate the disassembly and assembly of the protection member 25 and the shielding frame 24 .

Specifically, the buckle mechanism includes a connection buckle 251 and a connection bayonet 243 that is clipped with the connection buckle 251 . Of course, the positions of the connection buckle 251 and the connection bayonet 243 can also be interchanged, that is, the connection buckle 251 is arranged on the shielding frame 24 , and the connection bayonet 243 is opened on the protection member 25 .

Preferably, the section of the shielding frame 24 is rectangular, the shielding frame 24 has a first board and a second board that are perpendicular to the front side or the wall surface of the writing board 2, and the third board and the second board are connected between the first board and the second board. Four boards, wherein the first board and the second board are provided with connection bayonet 243, two rows of connection catches 251 are provided on the protection member 25, and the number and position of the two rows of connection catches 251 correspond to the first board and the second board respectively. Connection bayonet 243 on the second board.

The shielding frame 24 includes a frame body 244 , a side of the frame body 244 close to the writing board 2 is protruded with a connecting flange 245 , and the connecting flange 245 is connected to the back side of the writing board 2 . Preferably, the connecting flange 245 is detachably connected to the back side of the writing board 2 through screws.

A side of the shielding frame 24 away from the wall is flush with the front side of the writing board 2 . This design can prevent the shielding frame 24 from protruding from the front side of the writing board 2, so that the front of the entire smart blackboard is beautiful.

In order to reduce the difficulty of connecting the shielding frame 24 and the writing board 2 , a second positioning post is protruded on one side of the connecting flange 245 close to the writing board 2 , and a second positioning hole is opened on the back side of the writing board 2 . The positioning column is inserted and matched with the second positioning hole. Of course, the positions of the second positioning post and the second positioning hole can also be interchanged, that is, the second positioning post is protrudingly disposed on the back side of the writing board 2 , and the second positioning hole is opened on the connecting flange 245 .

The shielding frame 24 is also provided with an abutting protruding edge 246 .

The upper and lower sides of the writing body 22 are respectively provided with a second upper frame 26 and a second lower frame 27, wherein the protective member 25 located above the shielding frame 24 is flush with the side of the second upper frame 26 away from the writing body 22, and is located at the top of the shielding frame 24. The protection member 25 below the shielding frame 24 is flush with the side of the second lower frame 27 away from the writing body 22 .

In this embodiment, the side of the second upper frame 26 abutting against the writing body 22 is protruded with a first raised edge, and the first raised edge is connected to the back side of the writing body 22; the second lower frame 27 abuts the writing body One side of the 22 is protruded with a second convex edge, and the second convex edge is connected with the back side of the writing body 22 . By arranging the first convex edge and the second convex edge, the connection between the second upper frame 26 and the second lower frame 27 and the writing body 22 can be facilitated.

Specifically, both the first convex edge and the second convex edge are connected to the back side of the writing body 22 of the writing board 2 by screws. Of course, the connection is not limited to the use of screws, and the first convex edge and the second convex edge can also be pasted on the back side of the writing body 22 of the writing board 2 by means of gluing.

The structure of the second upper frame 26 and the second lower frame 27 can be set to be the same, the second upper frame 26 is hollow inside, the two ends of the second upper frame 26 are provided with sockets communicating with the inside thereof, and the first splicing piece is arranged in the socket, The first splicing piece partially extends to the outside of the second upper frame 26, the first splicing piece is a strip-like structure, and the part inserted into the second upper frame 26 is connected with the second upper frame 26 by screws, which is arranged on the second upper frame 26. The part outside the frame 26 is connected to the second splicing piece 28 by screws. The second splicing piece 28 is plate-shaped, and is respectively connected to the first splicing piece and the connecting flange 245 of the shielding frame 24 through screws.

In order to reduce the difficulty of assembling the second splicing piece 28 with the first splicing piece and the connecting flange 245, a third positioning post 281 is protruded on the second splicing piece 28, and is respectively provided on the first splicing piece and the connecting flange 245 There are third positioning holes for the third positioning posts 281 to be inserted into. Of course, in other embodiments, the positions of the third positioning post 281 and the third positioning hole can also be interchanged, that is, the third positioning post 281 is arranged on the first splicing piece and the connecting flange 245, and the third positioning hole Open on the second splicing piece 28 .

As shown in FIGS. 19 to 24 , a camera assembly 6 is provided on the back side of the cover 12 of the electronic tablet 1 , and the camera assembly 6 includes a positioning member 61 , a module bracket 62 , a lens module 63 and a board bracket 64 . The component 61 is arranged on the back side of the cover plate 12 of the display device, the positioning component 61 is provided with a positioning through hole 611, the module bracket 62 is connected with the positioning component 61, and the module bracket 62 is provided with an installation communicating with the positioning through hole 611. The lens module 63 is arranged in the installation hole, the board bracket 64 is connected to the first upper frame 14 of the electronic tablet 1, and the board bracket 64 is fixed with a camera board 65 electrically connected to the lens module 63. The bracket 64 is also provided with a pressing portion 641 for pressing the lens module 63 in the mounting hole. By arranging the positioning member 61, the difficulty of installation and positioning of the module bracket 62 can be reduced, and under the combined action of the module bracket 62 and the abutting portion 641, the lens module 63 can be fixed without additional screws or adhesive fixing. The lens module 63 is convenient for disassembly and assembly of the lens module 63. In addition, the lens module 63 is arranged on the back side of the cover plate 12 and is no longer arranged in the first upper frame 14, so it will not occupy the space of the first upper frame 14. , the volume of the first upper frame 14 can be reduced, and it is convenient to realize the setting of the narrow frame.

In this embodiment, the cover plate 12 is tempered glass.

In this embodiment, a through hole is formed on the cover plate 12 at a position corresponding to the lens module 63 , and the through hole is communicated with the positioning through hole 611 on the positioning member 61 , so that the lens module 63 can clearly photograph the cover plate 12 . front side. Of course, in other embodiments, the via holes opened on the cover plate 12 can also be omitted, because the cover plate 12 is of a transparent structure, even if there are no via holes opened on the cover plate 12, the lens module 63 can also normally cover the cover. The front side of the board 12 is photographed.

In order to reduce the difficulty of fixing the module bracket 62 , a fourth positioning hole 612 can also be opened on the positioning member 61 , and a fourth positioning column is protruded correspondingly on the side of the module bracket 62 close to the positioning member 61 . The fourth positioning hole 612 is inserted to realize the positioning of the module bracket 62. When the fourth positioning column on the module bracket 62 is inserted into the fourth positioning hole 612 on the positioning member 61, the installation on the module bracket 62 The holes correspond to the positions of the positioning through holes 611 on the positioning member 61 , that is, the module bracket 62 is installed in place.

Of course, the positions of the fourth positioning post and the fourth positioning hole 612 can also be interchanged, that is, the fourth positioning post is provided on the positioning member 61 , and the fourth positioning hole 612 is opened on the module bracket 62 .

The number of the fourth positioning column and the fourth positioning hole 612 can also be set to two or more, which further limits the installation position of the module bracket 62 and reduces the installation difficulty of the module bracket 62 .

In this embodiment, the positioning member 61 is pasted on the back side of the cover plate 12 . Fixing the positioning member 61 by means of sticking can reduce the difficulty of fixing the positioning member 61 on the cover plate 12 , and at the same time, avoid opening structures such as threaded holes on the cover plate 12 .

The module bracket 62 is pasted on the positioning member 61 . The method of pasting can reduce the use of fasteners such as screws, and reduce the difficulty of disassembly and assembly. In other embodiments, the module bracket 62 can also be fixed on the positioning member 61 through structures such as screws and buckles.

Specifically, the mounting hole is a stepped hole, and the stepped hole includes a first hole and a second hole arranged in sequence, the first hole is adjacent to the cover plate 12 , the size of the first hole is smaller than that of the second hole, and the first hole is the same as the second hole. A stepped surface is formed between the holes, and the lens module 63 is provided with an abutting surface abutting against the stepped surface. By setting the mounting hole as a stepped hole, it is convenient to install the lens module 63, prevent the lens module 63 from being separated from the module bracket 62, and at the same time, the lens module 63 can be fixed under the action of the abutting portion 641 and the stepped surface.

The board bracket 64 includes a first mounting plate 642 , a second mounting plate 643 and a third mounting plate 644 . The first mounting plate 642 is connected to the first upper frame 14 , and the second mounting plate 643 is connected to the first mounting plate 643 through the third mounting plate 644 . The mounting plate 642 is connected, and the camera card 65 is arranged on the second mounting plate 643 .

In this embodiment, the first mounting plate 642 and the second mounting plate 643 are located on the same side of the third mounting plate 644, and the abutting portion 641 includes a first abutting plate 6411 and a second abutting plate 6412 arranged at an included angle One end of the first pressing plate 6411 away from the second pressing plate 6412 is connected to the third mounting plate 644 or the first mounting plate 642 , and the second pressing plate 6412 is pressed against the lens module 63 .

Specifically, the abutting portion 641 , the first mounting plate 642 , the second mounting plate 643 and the third mounting plate 644 are integrally stamped or bent with a metal sheet, or integrally molded with plastic, and the integral molding structure can reduce the number of connections and assembly. , reducing the manufacturing process and increasing the strength of the entire board bracket 64 .

The first abutting plate 6411 and the second abutting plate 6412 are arranged at an acute angle, and the first abutting plate 6411 and the third mounting plate 644 are connected and located on the same plane.

The camera card 65 is arranged on the side of the second mounting plate 643 away from the first mounting plate 642 . The camera card 65 is provided with a signal lamp 651 , and a light guide column 66 is arranged corresponding to the signal lamp 651 , and the first end of the light guide column 66 extends to the signal lamp. At 651 , the second end of the light guide column 66 extends to the cover plate 12 . By arranging the light guide column 66, the light of the signal lamp 651 on the camera card 65 can be transmitted to the cover plate 12, so as to remind the user of the shooting state.

Specifically, the second mounting plate 643 is provided with a light guide hole 6431 , the light guide column 66 includes a light guide body 661 and a light guide column limiter 662 protruding from the outer wall of the light guide body 661 , the first end of the light guide column 66 is It can pass through the light guide hole 6431 and abut with the camera board 65 , and the light guide column limiting portion 662 abuts on the side of the second mounting plate 643 close to the camera board 65 . By arranging the light guide holes 6431 and the light guide rod limiting portion 662, the light guide rod 66 can be fixed, and the light guide rod 66 can be fixed without the need of screws, adhesives and other structures, which reduces the difficulty of disassembly and assembly of the light guide rod 66.

The light guide rod limiting portion 662 is a plate-like structure annularly disposed on the outer peripheral wall of the light guide rod 66 around the central axis of the light guide rod 66 .

In order to prevent the light of the light guide rod 66 from diffusing, an opaque coating may be applied on the outer wall of the light guide rod 66 except for the end faces of the first end and the second end.

As shown in FIGS. 25 to 29 , both ends in the length direction of the first lower frame 17 of the electronic tablet 1 are detachably provided with corner pieces 110 , the first lower frame 17 includes a lower frame body 171 , and the lower frame body 171 is provided with a cover plate. The first side 1711 on the same side of the front side of The height of the first side surface 1711 is L1, the height of the object storage protrusion 173 protruding from the first side surface 1711 is L2, L2 is greater than L1, and the object storage protrusion 173 is protruded from the front side of the cover plate 12. The lower frame body 171 is provided with There is an accommodating cavity 1714, and a first opening 1715 is formed on the end surface of the lower frame body 171 connected to one end of the corner piece 110, which communicates with the accommodating cavity 1714. The corner piece 110 includes a corner body 1101, and the corner body 1101 can be inserted into the accommodating cavity through the first opening 1715 In the cavity 1714, the corner body 1101 is connected with the lower frame body 171 by screws, and the corner body 1101 is protruded with an arc-shaped convex part 1102 and a connecting convex part 1103, one end of the connecting convex part 1103 and the length direction of the supporting convex part 172 The ends are in contact with each other, and the other end is connected to the arc-shaped convex portion 1102 . By setting the height of the storage protrusion 173 protruding from the first side 1711 to be greater than the height of the supporting protrusion 172 protruding from the first side 1711, the storage protrusion 173 can be used as a platform for placing items such as pens, and there is no need to provide additional pens Box and other structures reduce manufacturing and installation costs, and the storage protrusions 173 are set to protrude from the front side of the cover plate 12 , so it is possible to prevent the operator from scratching the supporting protrusions when picking up the items on the storage protrusions 173 172, effectively preventing the operator's hand from being scratched; by detaching both ends of the first lower frame 17 in the length direction and setting the corner pieces 110, the corner pieces 110 can be used to block both ends of the first lower frame 17 and lower the first The lower frame 17 is difficult to manufacture, and the corner piece 110 has strong versatility, and can be applied to the first lower frame 17 of different lengths to meet the needs of the electronic tablet 1 of various sizes.

In this embodiment, the corner body 1101 has a corner side surface on the same side as the front side surface of the cover plate 12, the height of the connecting convex portion 1103 protruding from the corner side surface is L3, L3-L1=H4, H4 is not less than 0.1mm, the arc The height of one end of the protruding portion 1102 connected to the protruding portion 173 protruding from the side of the corner is L4, L4-L2=H5, and H5 is not less than 0.1 mm. This design makes the surface of the part of the corner piece 110 exposed on the lower frame body 171 higher than the surface of the first lower frame 17, which can effectively prevent hand cutting.

Further, the height of the arc-shaped convex portion 1102 gradually decreases from the end of the connecting convex portion 173 toward the end connecting the connecting convex portion 1103, and the height of the end of the arc-shaped convex portion 1102 connecting the connecting convex portion 1103 is equal to the connecting convex portion height of section 1103.

In addition, the arc-shaped convex portion 1102 has an abutment surface abutting against the end surface of the lower frame body 171 connecting the corner piece 110 , and the shape of the abutting surface matches the shape of the end surface of the lower frame body 171 connecting the corner piece 110 . This design can make the appearance of the connection between the first lower frame 17 and the corner piece 110 beautiful.

One end of the corner body 1101 inserted into the accommodating cavity 1714 is connected with a plug portion 1105 , the thickness of the plug portion 1105 is smaller than that of the corner body 1101 , a limit step is formed between the plug portion 1105 and the corner body 1101 , and the lower frame body 171 There is a second side surface 1712 opposite to the first side surface 1711 . The limiting step is located on the side of the corner body 1101 close to the second side surface 1712 and abuts with the end surface of the lower frame body 171 with the first opening 1715 . The setting of the limiting step can limit the insertion position of the corner body 1101 of the corner piece 110 , and the plug portion 1105 can extend the length of the corner piece 110 inserted into the accommodating cavity 1714 to improve connection stability.

In this embodiment, the plug-in portion 1105 is provided with threaded holes for screwing, and the second side 1712 of the lower frame body 171 is provided with through holes for the screws to pass through, and the screws pass through the through holes and are screwed into the threaded holes to fix the plug-in portion 1105 in the accommodating cavity 1714 of the lower frame body 171 . Preferably, the screws are countersunk screws.

A limiting protrusion 1104 is protruded from one side of the connecting protrusion 1103 close to the cover 12 , and the electronic tablet 1 further includes an inner frame 111 . 111 is away from the side of the cover plate 12 .

Further, the inner frame 111 includes frame strips respectively disposed on the four sides of the cover plate 12 , and two adjacent frame strips are connected by a corner piece 112 , and the corner piece 112 is arranged between the limiting protrusion 1104 and the cover plate 12 .

Specifically, the inner frame 111 is bonded to the cover plate 12 , and the first lower frame 17 is connected to the inner frame 111 by screws. The inner frame 111 is connected with the cover plate 12 by means of pasting, which can avoid using fasteners such as screws to fix the inner frame 111 and the cover plate 12, and also simplifies the structure of the inner frame 111. The inner frame 111 can enhance the connection stability between the first lower frame 17 and the inner frame 111 .

Preferably, a third side 1713 is connected between the first side 1711 and the second side 1712 of the lower frame body 171 , the third side 1713 is close to the center of the display module, and a hook 174 is protruded from the third side 1713 ; A side of the inner frame 111 away from the cover plate 12 is provided with an inner frame bayonet 1111 , and the hook 174 is engaged with the inner frame bayonet 1111 . By arranging the hooks 174 and the inner frame bayonet 1111, the assembly difficulty of the first lower frame 17 and the inner frame 111 can be reduced, and the assembly efficiency can be improved.

In this embodiment, the hook 174 includes a hook body protruding from the third side surface 1713 , and a hook body is protruded from the side close to the inner frame 111 with a hook portion, and the hook portion is inserted into the inner frame card Inside the opening 1111, the hook body is connected with the inner frame 111 by screws.

The end surface of one end of the support protrusion 172 away from the first side surface 1711 does not protrude from the front side surface of the cover plate 12 . This design can further prevent the support protrusion 172 from scratching the operator's hand, thereby improving safety.

In this embodiment, an inclined transition surface or an arc transition surface is provided between the side of the support convex portion 172 close to the object storage convex portion 173 and the first side surface 1711 . Providing the inclined transition surface or the arc transition surface can further reduce the angular structure at the support convex portion 172, and effectively prevent the operator's hand from being scratched.

The storage protrusion 173 is perpendicular to the cover plate 12 . This design can ensure that items can be stably placed on the storage protrusion 173 .

In this embodiment, a side surface of the storage convex portion 173 close to the supporting convex portion 172 is a concave arc-shaped surface. Of course, the object storage convex portion 173 is not limited to the arc-shaped surface, but can also be set as an inclined surface. For example, the side surface of the object storage convex portion 173 close to the support convex portion 172 is an inclined surface, and the inclined surface is connected to one end of the first side surface 1711. is smaller than the height of one end of the inclined surface away from the first side surface 1711 . Alternatively, an accommodating groove is concavely provided on the side of the object storage convex portion 173 close to the supporting convex portion 172 .

In other embodiments, the object storage convex portion 173 may also be set to an overall inclined structure, and the included angle between the object storage convex portion 173 and the cover plate 12 is less than 90 degrees.

The display device further includes a functional module 7 , a second opening 1716 communicating with the accommodating cavity 1714 is opened on the second side 1712 of the lower frame body 171 , and the functional module 7 is installed in the accommodating cavity 1714 through the second opening 1716 .

The functional module 7 is installed in the lower frame body 171 , the functional module 7 can be hidden and installed, and the space in the first lower frame 17 can be reasonably utilized.

The function module 7 can be a speaker assembly or a key assembly. If the function module 7 is a speaker assembly, a sound outlet of the speaker needs to be opened at the corresponding position of the first side 1711. If the function module 7 is a key assembly, it needs to be located at the corresponding position of the first side 1711. Open a key hole for the key to pass through.

In a specific embodiment of the present invention, the smart blackboard includes an electronic tablet 1 and two writing boards 2, and the two writing boards 2 are respectively arranged on the left and right sides of the electronic tablet 1. In other embodiments, one can also be provided The electronic tablet 1 and a writing pad 2 are arranged on the left or right side of the electronic tablet 1 .

The electronic tablet 1 can be operated by the operator for touch writing, picture and video display, etc. The writing pad 2 can be a blackboard or a whiteboard, or any flat body that can be written to present the written content.

In the description herein, it should be understood that the azimuth or positional relationship such as the term "upper" is based on the azimuth or positional relationship shown in the accompanying drawings, which is only for the convenience of description and simplification of operations, rather than indicating or implying the referred device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of this specification, description with reference to the terms "an embodiment" or the like means that a particular feature, structure, material or characteristic in combination with the embodiment is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The technical principle of the present invention has been described above with reference to the specific embodiments. These descriptions are only for explaining the principle of the present invention, and should not be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (19)

1. The utility model provides a smart blackboard, includes that electronic flat board and at least one concatenation are in the clipboard of electronic flat board one side, its characterized in that, electronic flat board includes display module and is located the first concatenation frame of the concatenation side of electronic flat board, display module includes the apron, first concatenation frame is installed in the dorsal surface of apron, the clipboard is including writing the body and being located the second concatenation frame of the concatenation side of clipboard, the second concatenation frame includes first deckle board, supports the clamp plate and connects the first deckle board with the second deckle board of clamp plate, first deckle board with write the dorsal surface of body and be connected, it supports tightly to support the clamp plate and is in the second concatenation frame keeps away from one side of apron;

the two ends of the first splicing frame in the length direction are both connected with first fixing pieces, the two ends of the second splicing frame in the length direction are both connected with second fixing pieces, the first fixing piece is provided with a first guide inclined plane, the second fixing piece is provided with a second guide inclined plane, a third fixing piece is arranged at the joint of the electronic flat plate and the writing board and comprises a clamping plate and two limiting plates which are arranged at the same side of the clamping plate at intervals, the clamping plate and the two limiting plates enclose a clamping groove, the first fixing piece and the second fixing piece are clamped in the clamping groove, the two limiting plates are respectively provided with a matching inclined surface corresponding to the first guiding inclined surface and the second guiding inclined surface, so that the third fixing piece can pull the first fixing piece and the second fixing piece to be attached to each other when being clamped with the first fixing piece and the second fixing piece.

2. The intelligent blackboard of claim 1, further comprising a reinforcing press block, wherein the reinforcing press block includes a press block body and two press block connectors, both of which are connected to the press block body;

the pressing plate is provided with at least one group of notch groups at intervals along the length direction, each group of notch groups comprises two avoidance notches, two pressing block connecting pieces are arranged in the avoidance notches respectively and connected with the first splicing frame through screws, and the pressing block body is tightly pressed against a side face, far away from the first splicing frame, of the pressing plate.

3. The intelligent blackboard according to claim 1, wherein the first fixing member includes a first connection portion and a first protrusion connected with each other, the first connection portion is connected with the first frame by a screw, and the first guide slope is provided on the first protrusion;

the second fixing piece comprises a second connecting portion and a second convex portion, the second connecting portion is connected with the second splicing frame through screws, and the second guide inclined plane is arranged on the second convex portion.

4. The intelligent blackboard of claim 3, wherein the first convex portion and the second convex portion are both provided with a splicing threaded hole, the clamping plate is provided with a splicing through hole, a splicing screw passes through the splicing through hole and is screwed in the splicing threaded hole, so that the clamping plate is respectively connected with the first convex portion and the second convex portion, and the axis of the splicing screw is parallel to the cover plate.

5. The intelligent blackboard according to claim 1, wherein the electronic flat board includes a first upper frame located above the display module, the display module further includes a back plate disposed on a back side of the cover plate, a wall hanging component is connected to a side of the back plate away from the cover plate, the wall hanging component includes a wall hanging board and a first wall hanging strip, the first wall hanging strip includes a third connecting portion and a fixing portion disposed at an included angle, the fixing portion is attached to a side of the back plate away from the cover plate, one end of the third connecting portion away from the fixing portion is connected to the first upper frame, the wall hanging board is fixed on a wall surface, a first hook with a downward opening is disposed on one side of the first wall hanging strip away from the back plate, and the first wall hanging strip is hung on the wall hanging board.

6. The intelligent blackboard of claim 5, wherein the backboard includes a base board, surrounding boards extend from four sides of the base board toward the cover board, a connecting board extends from one end of the surrounding boards away from the base board toward the outer side of the surrounding boards, the connecting board is connected with the first upper frame, a receiving groove is formed between the surrounding boards and the base board, and the connecting part is attached to one side of the receiving groove away from the surrounding boards.

7. The intelligent blackboard of claim 6, wherein the first upper frame is provided with a first rear casing, the first rear casing shields the first upper frame near a side of the first wall hanging strip and the surrounding plate is adjacent to the part of the first upper frame, the first rear casing is connected with the substrate, the first rear casing is provided with an avoiding groove corresponding to the connecting part, the third connecting part is inserted in the avoiding groove, a threaded hole is provided on the first upper frame, the third connecting part and the groove bottom of the avoiding groove are provided with a through hole corresponding to the threaded hole, and a screw passes through the through hole on the third connecting part and is screwed in the threaded hole after the through hole of the groove bottom of the avoiding groove.

8. The intelligent blackboard of claim 5, wherein the wall hanging plate includes a wall hanging frame and a hanging strip connected with each other, the wall hanging frame is disposed on the back side of the electronic tablet, the hanging strip is disposed on the back side of the writing plate, the length of the hanging strip extends along the horizontal direction, the back side of the writing plate is connected with a second wall hanging strip, and the second wall hanging strip is hung with the hanging strip.

9. The intelligent blackboard according to claim 1, wherein the display module further includes a back plate disposed on the back side of the cover plate, the back plate is rectangular, the back plate includes a base plate, surrounding plates extend from four sides of the base plate toward the same side of the base plate, a connecting plate extends from one end of the surrounding plate away from the base plate toward the outer side of the surrounding plate, and the surrounding plates include two first surrounding walls disposed at intervals in a vertical direction and two second surrounding walls disposed at intervals in a horizontal direction;

keep away from towards on the base plate one side punching press of bounding wall is formed with additional strengthening, additional strengthening includes girder, auxiliary girder and first strengthening rib, set up two along vertical direction extensions along its central symmetry on the base plate the girder, girder length direction's both ends extend to two respectively first leg, every the girder with be adjacent to the girder through one between the second leg the auxiliary girder is connected, the girder the auxiliary girder the second leg and be located the top form first reinforcement district between the first leg, be equipped with two on the base plate altogether first reinforcement district, every all be provided with in the first reinforcement district first strengthening rib.

10. The intelligent blackboard of claim 9, wherein the main beam, the sub-beam and the first reinforcing rib all protrude from one side of the base plate far away from the surrounding plate, the height of the main beam protruding from the base plate is H1, the height of the sub-beam protruding from the base plate is H2, the height of the first reinforcing rib protruding from the base plate is H3, wherein H2 < H1, and H3 is not more than H2.

11. The intelligent blackboard according to claim 1, wherein a shielding frame is detachably disposed at an end of the writing body away from the second splicing frame, the end of the shielding frame away from the writing body abuts against a wall surface, the shielding frame is a hollow frame structure, openings communicating the inside of the shielding frame are disposed at two ends of the shielding frame in a vertical direction, the end face of the shielding frame, which is provided with the opening, is a mounting end face, and the mounting end face is detachably disposed with a protection member for shielding the mounting end face and blocking the opening.

12. The intelligent blackboard of claim 11, wherein the protector is connected to the sheltering border by a snap mechanism.

13. The intelligent blackboard according to claim 11 to the above, wherein the side of the shielding frame away from the wall surface is flush with the front side of the writing body.

14. The intelligent blackboard of claim 1, wherein the electronic tablet is further provided with a camera assembly, the camera assembly comprises:

the positioning piece is arranged on the back side surface of the cover plate, and a positioning through hole is formed in the positioning piece;

the module bracket is connected with the positioning piece and is provided with a mounting hole communicated with the positioning through hole;

the lens module is arranged in the mounting hole;

the electronic flat board comprises a board card support, wherein the board card support is connected with a first upper frame of the electronic flat board, a camera board card electrically connected with the lens module is fixed on the board card support, and a tightly supporting part used for tightly supporting the lens module in the mounting hole is further arranged on the board card support.

15. The intelligent blackboard according to claim 14, wherein a fourth positioning post is protruded from one of the positioning member and the module holder, and a fourth positioning hole is formed in the other of the positioning member and the module holder for inserting and matching with the fourth positioning post.

16. The intelligent blackboard according to claim 14, wherein the positioning member is adhered to the back side of the cover plate; and/or the presence of a gas in the gas,

the module bracket is bonded on the positioning piece.

17. The intelligent blackboard according to claim 1, wherein a first lower frame is further disposed below the display module, and corner pieces are detachably connected to both ends of the first lower frame in the length direction;

the first lower frame comprises a lower frame body, the lower frame body is provided with a first side face which is the same as the front side face of the cover plate, supporting convex parts for supporting the cover plate and object placing convex parts for placing objects are arranged on the first side face in a protruding mode at intervals, the height of the supporting convex parts protruding out of the first side face is L1, the height of the object placing convex parts protruding out of the first side face is L2, L2 is larger than L1, the object placing convex parts protrude out of the front side face of the cover plate, an accommodating cavity is arranged in the lower frame body, and a first opening communicated with the accommodating cavity is formed in the end face, connected with one end of the corner piece, of the frame body;

the corner piece includes the turning body, the turning body can by first opening inserts hold the intracavity, the turning body pass through the screw with this body coupling of lower frame, the protruding arc convex part and the connection convex part of being provided with on the turning body, connect the one end of convex part with support the length direction's of convex part tip butt, the other end is connected the arc convex part, the arc convex part is kept away from connect the one end of convex part with put thing convex part length direction's tip butt.

18. The intelligent blackboard according to claim 17, wherein the corner body has a corner side face on the same side as the front side face of the cover plate, the height of the connecting protrusion protruding from the corner side face is L3, L3-L1 is H4, and H4 is not less than 0.1 mm; and/or the presence of a gas in the gas,

the height of one end of the arc-shaped convex part, which is connected with the placing convex part and protrudes out of the side face of the corner is L4, L4-L2 is H5, and H5 is not less than 0.1 mm.

19. The intelligent blackboard according to claim 17, wherein the height of the arc-shaped protrusion gradually decreases from the end connected with the protruding part toward the end connected with the protruding part, and the height of the arc-shaped protrusion connected with the end connected with the protruding part is equal to the height of the protruding part.

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