CN216184054U - Interconnected blackboard infrared frame and interconnected blackboard - Google Patents

Abstract

The utility model provides an interconnected blackboard infrared frame and an interconnected blackboard, wherein the interconnected blackboard infrared frame comprises: the writing board frame body used for containing the writing board is formed by enclosing an upper frame, two side frames and a lower frame together, and a shaft groove is formed in the outer wall of the lower frame, which is close to the writing side of the writing board; the two first connecting pieces are respectively connected to two ends of the upper frame and connected with the corresponding side frames; the two second connecting pieces are respectively connected to two ends of the lower frame and connected with the corresponding side frames; the supporting piece comprises a supporting plate and a rotating shaft connected with the supporting plate, the rotating shaft is in rotating fit with the shaft groove, and the bottom of the supporting plate is provided with an inserting plate groove; and the two end covers are respectively inserted at the two ends of the supporting plate. The supporting piece is matched with the shaft groove through the rotating shaft, the supporting piece and the end cover are turned together, the supporting piece and the end cover can be turned and folded to be attached to the lower frame during transportation, transportation space is saved, the supporting piece is not prone to collision after being folded, and transportation safety is improved.

Description

Interconnected blackboard infrared frame and interconnected blackboard

Technical Field

The utility model belongs to the technical field of interconnected blackboards, and particularly relates to an interconnected blackboard infrared frame and an interconnected blackboard.

Background

The interconnection blackboard adopts infrared technology on the basis of the traditional blackboard, so that the blackboard has the Internet functions of synchronous display, recording and broadcasting and the like when in writing. The interconnection blackboard can also realize the teaching digitization with the blackboard writing content real-time synchronization to electronic teaching equipment on keeping the writing function basis of traditional blackboard, or with blackboard writing content synchronous transmission to the projector screen, solve the position behind row or marginal classmate's problem of not seeing the blackboard writing clearly. In the teaching use, can need various auxiliary teaching aids such as writing pen, handspike sometimes, current interconnected blackboard directly sets up the board support on the blackboard frame, board support and blackboard lower frame body coupling, shared space is big, the transportation of being not convenient for.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an interconnected blackboard infrared frame and an interconnected blackboard, and aims to solve the problems that an existing interconnected blackboard is provided with a plate support directly on a blackboard frame, the plate support and a blackboard lower frame are integrally connected, occupied space is large, and transportation is inconvenient.

In order to achieve the purpose, the utility model adopts the technical scheme that:

in a first aspect, an embodiment of the present invention provides an interconnected blackboard infrared frame, including: an upper frame; the two side frames are respectively connected to two ends of the upper frame; the two ends of the lower frame are respectively connected to one end, far away from the upper frame, of each of the two side frames, the upper frame, the two side frames and the lower frame jointly enclose to form a writing board frame body used for containing a writing board, and an axial groove is formed in the outer wall, close to the writing side of the writing board, of the lower frame; the two first connecting pieces are respectively connected to two ends of the upper frame and connected with the corresponding side frames; the two second connecting pieces are respectively connected to two ends of the lower frame and connected with the corresponding side frames; the supporting piece comprises a supporting plate and a rotating shaft connected with the side wall, close to the lower frame, of the supporting plate, the rotating shaft is in rotating fit with the shaft groove, and the bottom of the supporting plate is provided with an inserting plate groove; and the two end covers are respectively inserted at two ends of the supporting plate, and respectively comprise an inserting plate and a baffle plate, wherein the inserting plate is in inserting fit with the inserting plate groove, the baffle plate is connected with the inserting plate, the baffle plate is abutted to the supporting plate, and the baffle plate and the supporting plate jointly enclose to form an accommodating cavity.

In one possible implementation, the support has an unfolded state in which the support is turned to be perpendicular to the writing board and a folded state in which the support is turned to be parallel to the writing board, and both the end caps are turned together with the support.

In a possible implementation manner, the outer wall of the shaft groove formed by the lower frame is provided with a notch, and the bearing piece further comprises a limiting plate which is connected with the supporting plate and the rotating shaft; when the supporting piece is in an unfolded state, the lower surface of the limiting plate is abutted to the lower surface of the outer wall of the notch, and when the supporting piece is in a folded state, the upper surface of the limiting plate is abutted to the upper surface of the outer wall of the notch.

In a possible implementation manner, a wedge-shaped block is arranged at the bottom of the inserting plate, the height of the protrusion of the wedge-shaped block is gradually reduced along the inserting direction of the inserting plate, and the wedge-shaped block abuts against the inner wall of the inserting plate groove.

In a possible implementation manner, the writing sides of the upper frame, the side frames and the lower frame, which are far away from the writing board, are all provided with mounting grooves, and the first connecting piece and the second connecting piece both include: the corner connector is L-shaped, two ends of the corner connector of the first connecting piece are respectively inserted into the upper frame and the corresponding mounting grooves of the side frames, and two ends of the corner connector of the second connecting piece are respectively inserted into the lower frame and the corresponding mounting grooves of the side frames; and the supporting piece is connected with the corner connector, the supporting piece of the first connecting piece is flush with the edges of the upper frame and the side frame, and the supporting piece of the second connecting piece is flush with the edges of the lower frame and the side frame.

In a possible implementation manner, the corner connectors of the first connecting piece are connected with the corresponding upper frame and the corresponding side frame through threaded fasteners, and the corner connectors of the second connecting piece are connected with the corresponding lower frame and the corresponding side frame through threaded fasteners.

In a possible implementation manner, the upper frame, the side frame and the lower frame are all provided with a writing board groove, a lamp strip groove and a filter strip groove, and the lamp strip groove and the filter strip groove are all close to the writing side of the writing board.

In a possible implementation manner, the light bar groove and the filter bar groove are completely overlapped in the width direction of the groove body, and the writing board groove and the light bar groove are partially overlapped in the width direction of the groove body.

Compared with the prior art, the scheme shown in the embodiment of the utility model has the advantages that the first connecting piece is connected with the upper frame and the corresponding side frame, the second connecting piece is connected with the lower frame and the corresponding side frame, the upper frame, the side frames and the lower frame jointly enclose to form the writing board frame body, the bearing piece is matched with the shaft groove through the rotating shaft, so that the bearing piece and the end cover can be turned over together, the bearing piece and the end cover can be turned over and folded to be attached to the lower frame during transportation, the transportation space is saved, meanwhile, the bearing piece is not easy to collide after being folded, and the transportation safety is improved. Two end covers detachably insert respectively and locate the both ends of layer board, through picture peg and the cooperation installation of picture peg groove, can form with the layer board after the end cover installation and hold the chamber, and the end cover is convenient for clear up the layer board after pulling down, does not have the clearance dead angle.

In a second aspect, an embodiment of the present invention further provides an interconnection blackboard, including: according to the red outer frame of the interconnected blackboard in any one embodiment, the upper frame, the side frames and the lower frame are all provided with the writing board groove, the light bar groove and the filter bar groove; a writing board mounted in the writing board groove; the lamp strip is arranged in the lamp strip groove; and a filter strip installed in the filter strip groove.

In a possible implementation, the filter groove is adjacent to the edge of the writing board frame, the filter is provided with a first protruding part in concave-convex fit with the filter groove, and a second protruding part in concave-convex fit with the edge of the writing board frame, and the first protruding part and the second protruding part form a clamping groove for clamping a wall of the filter groove.

The interconnected blackboard provided by the embodiment of the utility model comprises the infrared frame of the interconnected blackboard in any one of the embodiments, has the same technical effect as the infrared frame of the interconnected blackboard, and is not described again.

Drawings

FIG. 1 is a perspective view of an interconnected blackboard red frame according to an embodiment of the present invention;

FIG. 2 is a schematic view of the assembly of the support member and the end cap in one embodiment of the present invention;

FIG. 3 is a schematic structural view of an end cap according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a lower frame according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a first connecting member according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second connecting member according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an infrared frame of an interconnected blackboard according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of an interconnected blackboard according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of another state of the interconnected blackboard according to one embodiment of the present invention;

fig. 10 is a schematic structural diagram of a light filter bar according to an embodiment of the present invention.

Description of reference numerals:

1. interconnected blackboard infrared frame 100, upper frame 200 and side frame

300. Lower frame 310, shaft groove 320 and writing board groove

330. Light bar groove 340, filter bar groove 350 and mounting groove

400. First connecting piece 410, corner connector 420 and supporting piece

430. Threaded fastener 500, second connector 600, and bearing

610. Supporting plate 611, inserting plate groove 620 and limiting plate

630. Rotating shaft 700, end cover 710 and inserting plate

711. Wedge block 720 and baffle plate

2. Interconnected blackboard 800, writing board 900 and lamp strip

1000. Light filter strip 1010, first convex part 1020 and second convex part

Detailed Description

In order to make the technical problems, technical solutions and beneficial effects zu of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to," "secured to," or "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. "plurality" means two or more. "at least one" refers to one or more quantities.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Referring to fig. 1 to 10, an embodiment of the utility model provides an interconnected blackboard red frame 1, including: an upper bezel 100; two side frames 200 respectively connected to both ends of the upper frame 100; the two ends of the lower frame 300 are respectively connected to one ends of the two side frames 200 far away from the upper frame 100, the two side frames 200 and the lower frame 300 jointly enclose to form a writing board frame body for containing the writing board 800, and the outer wall of the lower frame 300, which is close to the writing side of the writing board 800, is provided with a shaft groove 310; two first connection members 400 connected to both ends of the upper frame 100, respectively, and connected to the corresponding side frames 200; two second connecting members 500 respectively connected to both ends of the lower frame 300 and connected to the corresponding side frames 200; the supporting piece 600 comprises a supporting plate 610 and a rotating shaft 630 connected with the supporting plate 610 close to the side wall of the lower frame 300, the rotating shaft 630 is in rotating fit with the shaft groove 310, and the bottom of the supporting plate 610 is provided with an inserting plate groove 611; and the two end covers 700 are respectively inserted at two ends of the supporting plate 610 and respectively comprise an inserting plate 710 in inserting fit with the inserting plate groove 611 and a baffle plate 720 connected with the inserting plate 710, the baffle plate 720 is abutted against the supporting plate 610, and the two baffle plates 720 and the supporting plate 610 jointly enclose to form an accommodating cavity.

In the embodiment of the utility model, the upper frame 100, the two side frames 200 and the lower frame 300 are enclosed together to form a writing board frame body which is used for installing and limiting the writing board 800, the writing side of the writing board 800 is the outer side after installation, and the supporting piece 600 and the end cover 700 are arranged on the outer wall of the lower frame 300, so that auxiliary teaching aids such as writing pens and hand levers can be conveniently stored.

In order to facilitate the processing and manufacturing, the upper frame 100, the side frame 200 and the lower frame 300 can be made of integrally formed aluminum profiles, and have the advantages of light weight, high strength, attractive appearance and the like. In order to simplify the structure of the components and improve the versatility and the adaptability of the components, the upper frame 100 and the side frames 200 may be made of aluminum profiles having the same cross-sectional shape. Of course, other materials such as stainless steel and plastic can be used on the premise of ensuring the structural strength.

It should be noted that, referring to fig. 4, the outer wall of the lower frame 300 in the embodiment of the present invention is the side wall adjacent to the writing side, i.e. the side wall of the blackboard facing the viewer of the blackboard after being installed. The outer wall of frame 300 is down seted up to shaft groove 310, and the back is installed to supporting piece 600, conveniently accomodates the teaching aid. When the supporting member 600 of the embodiment of the utility model is installed, the supporting member 600 is inserted along one end of the shaft groove 310, the rotating shaft 630 is rotatably matched with the shaft groove 310, and then the end covers 700 at two sides are installed at two ends of the supporting plate 610, so that the inserting plates 710 are inserted and matched with the inserting plate groove 611. In the embodiment of the utility model, the supporting piece 600 and the end cover 700 can be detached and turned over, can be used in different environments, and can also save the transportation space.

After the end cap 700 is installed, a cleaning dead angle is formed at the joint surface of the supporting plate 610 and the end cap 700, and dust is easily accumulated. In the embodiment of the utility model, two end covers 700 are respectively installed in a matching way through the inserting plate 710 and the inserting plate groove 611, and the end cover 700 is detachable. The end cover 700 can form an accommodating cavity with the supporting plate 610 after being installed, the supporting plate 610 can be cleaned conveniently after the end cover 700 is detached, and no cleaning dead angle exists. When the cleaning is needed, the end cover 700 is detached, the supporting plate 610 can be cleaned by wiping the cleaning cloth along the length direction of the supporting plate 610, and the cleaned end cover 700 is installed on the supporting plate 610 again through the inserting plate groove 611, so that the operation is convenient.

In the embodiment of the present invention, the upper frame 100 and the side frame 200 are connected by a first connecting member 400, the lower frame 300 and the side frame 200 are connected by a second connecting member 500, and the first connecting member 400 and the second connecting member 500 may be specifically in the form of a connecting plate, a fastener, or the like.

In the embodiment of the utility model, the first connecting piece 400 is connected with the upper frame 100 and the corresponding side frame 200, the second connecting piece 500 is connected with the lower frame 300 and the corresponding side frame 200, the upper frame 100, the side frame 200 and the lower frame 300 jointly enclose and close to form a writing board frame body, the supporting piece 600 is matched with the shaft groove 310 through the rotating shaft 630, so that the supporting piece 600 and the end cover 700 can be turned over together, the supporting piece 600 and the end cover 700 can be turned over and folded to be attached to the lower frame 300 during transportation, the transportation space is saved, meanwhile, the supporting piece 600 and the end cover 700 are not easy to collide after being folded, and the transportation safety is improved.

Referring to fig. 8 and 9, in some possible embodiments, the support member 600 has an unfolded state in which it is folded perpendicular to the writing board 800 and a folded state in which it is folded parallel to the writing board 800, and both end caps 700 are folded together with the support member 600. The supporting plate 610 is perpendicular to the writing board 800 after being unfolded, so that the teaching aid in the accommodating cavity can be taken and stored conveniently, the supporting plate 610 is folded in an overturning manner and is parallel to the writing board 800, the whole thickness of the infrared frame 1 of the interconnected blackboard can be reduced, the transportation space is saved, and meanwhile, the collision is not easy to occur.

Referring to fig. 2 and 8, in some possible embodiments, the outer wall of the lower frame 300 forming the shaft groove 310 is provided with a notch, and the supporting member 600 further includes a limiting plate 620 connecting the supporting plate 610 and the rotating shaft 630; when the support 600 is in the unfolded state, the lower surface of the restriction plate 620 abuts against the lower surface of the outer wall constituting the notch, and when the support 600 is in the folded state, the upper surface of the restriction plate 620 abuts against the upper surface of the outer wall constituting the notch.

In order to facilitate the processing and make the supporting member 600 have sufficient supporting strength to meet the use requirement, the supporting plate 610, the limiting plate 620 and the rotating shaft 630 in this embodiment may be made of an integrally formed aluminum profile. The outer wall of the shaft groove 310 formed by the lower frame 300 is provided with a notch, and the notch is matched with the limiting plate 620 for limiting, so that the overturning angle of the bearing piece 600 can be limited.

Referring to fig. 2 and 3, in some possible embodiments, a wedge block 711 is disposed at the bottom of the board 710, and a height of the wedge block 711 is gradually reduced along an insertion direction of the board 710, and the wedge block 711 abuts against an inner wall forming the board slot 611.

In the embodiment, the wedge block 711 is arranged, and after the inserting plate 710 is inserted into the inserting plate groove 611, the wedge block 711 can abut against the inner wall of the inserting plate groove 611, so that the end cover 700 is prevented from falling off. Specifically, the inserting plate 710, the baffle plate 720 and the wedge block 711 in this embodiment are integrally formed and made of plastic, aluminum alloy and other materials.

Referring to fig. 4, in some possible embodiments, the upper frame 100, the side frame 200, and the lower frame 300 are provided with mounting grooves 350 on writing sides away from the writing board 800, and the first connecting member 400 and the second connecting member 500 each include: the corner connectors 410 are L-shaped, two ends of the corner connectors 410 of the first connecting piece 400 are respectively inserted into the mounting grooves 350 of the upper frame 100 and the corresponding side frame 200, and two ends of the corner connectors 410 of the second connecting piece 500 are respectively inserted into the mounting grooves 350 of the lower frame 300 and the corresponding side frame 200; and a support member 420 connected to the corner bracket 410, wherein the support member 420 of the first connector 400 is flush with the edges of the upper frame 100 and the side frame 200, and the support member 420 of the second connector 500 is flush with the edges of the lower frame 300 and the side frame 200.

In this embodiment, the upper frame 100, the side frame 200 and the lower frame 300 are connected by the corner connectors 410, specifically, when the corner connectors 400 are installed, two ends of the corner connectors 410 of the first connecting members 400 are respectively inserted into the mounting grooves 350 of the upper frame 100 and the corresponding side frame 200, and two ends of the corner connectors 410 of the second connecting members 500 are respectively inserted into the mounting grooves 350 of the lower frame 300 and the corresponding side frame 200, so that the structure is simple, and the disassembly and the installation are convenient.

It should be noted that in the present embodiment, the shape of the first connecting member 400 is matched with the shapes of the upper frame 100 and the side frame 200, and the shape of the second connecting member 500 is matched with the shapes of the upper frame 100 and the side frame 200, so that the whole body is more beautiful after being installed.

To facilitate assembly and disassembly, referring to fig. 7, in some possible embodiments, the corner connectors 410 of the first connecting member 400 are connected to the corresponding upper frame 100 and side frame 200, and the corner connectors 410 of the second connecting member 500 are connected to the corresponding lower frame 300 and side frame 200 by threaded fasteners 430.

Specifically, the fixed orifices have been seted up to angle sign indicating number 410 in this embodiment, set up threaded hole on corresponding last frame 100, lower frame 300 and the side frame 200, and threaded fastener 430 penetrates from the fixed orifices, is connected with the screw hole cooperation that corresponds, can enough guarantee joint strength, makes things convenient for the dismouting again.

Referring to fig. 4 and 8, in some possible embodiments, the upper frame 100, the side frame 200, and the lower frame 300 are respectively formed with a writing board slot 320, a light bar slot 330, and a filter slot 340, and the light bar slot 330 and the filter slot 340 are respectively disposed near the writing side of the writing board 800.

In this embodiment, the tablet groove 320, the light bar groove 330 and the filter bar groove 340 are formed by integrally molding aluminum profiles that form the frame. Because clipboard 800 can use water to clean when clean, the slope of filter strip groove 340 sets up in this embodiment, and is concrete, and the distance that is close to clipboard 800 one side apart from clipboard groove 320 cell body bottom behind the installation of filter strip 1000 is greater than the distance apart from clipboard groove 320 cell body bottom in one side of clipboard 800, makes things convenient for water to flow down along filter strip 1000, can avoid filter strip 1000 to store up water after the installation and influence and strain the light effect.

Referring to fig. 4, in some possible embodiments, the light bar slot 330 and the filter slot 340 are completely overlapped in the slot width direction, and the writing board slot 320 and the light bar slot 330 are partially overlapped in the slot width direction. In the embodiment, the width direction of the groove body is the same as the thickness direction of the blackboard, so that the height of the viewing surface of the writing board frame body can be reduced to the greatest extent, the thickness size of the combined blackboard is smaller, and the blackboard is more attractive.

Referring to fig. 8 and 9, the present invention also provides an interconnection blackboard 2, including: in the interconnected blackboard red frame 1 according to any one of the above embodiments, the upper frame 100, the side frames 200 and the lower frame 300 are all provided with the writing board groove 320, the light bar groove 330 and the filter bar groove 340; a tablet 800 mounted in the tablet groove 320; a light bar 900 mounted in the light bar slot 330; and a filter bar 1000 mounted to the filter bar groove 340.

In the embodiment of the present invention, the writing board 800 is installed in the writing board groove 320, the light bar 900 is inserted into the light bar groove 330, and the light filter bar 1000 is inserted into the light filter bar groove 340, and in order to fix the positions, the light bar 900 and the light filter bar 1000 may be fixed by using glass cement.

It should be noted that when the light bar 900 of one of the frames is an infrared emission light bar, the light bars in the frame opposite to the frame are infrared absorption light bars, so that a two-dimensional infrared light array can be formed on the writing side of the writing board 800.

Referring to fig. 9 and 10, in some possible embodiments, the filter strip 1000 is disposed adjacent to the edge of the tablet frame, the filter strip 1000 has a first protrusion 1010 that is concave-convex matched with the filter groove 340, and a second protrusion 1020 that is concave-convex matched with the edge of the tablet frame, and the first protrusion 1010 and the second protrusion 1020 form a slot for holding a wall of the filter groove 340.

In the embodiment, after the filter strip 1000 is installed, the second protrusion 1020 is attached to the outside of the wall of the filter strip groove 340, so that water and dust can be prevented from entering the filter strip groove 340.

It is to be understood that, in the foregoing embodiments, various parts may be freely combined or deleted to form different combination embodiments, and details of each combination embodiment are not described herein again, and after this description, it can be considered that each combination embodiment has been described in the present specification, and can support different combination embodiments.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. Interconnection blackboard frame in red, its characterized in that includes:

an upper frame;

the two side frames are respectively connected to two ends of the upper frame;

the two ends of the lower frame are respectively connected to one end, far away from the upper frame, of each of the two side frames, the upper frame, the two side frames and the lower frame jointly enclose to form a writing board frame body used for containing a writing board, and an axial groove is formed in the outer wall, close to the writing side of the writing board, of the lower frame;

the two first connecting pieces are respectively connected to two ends of the upper frame and connected with the corresponding side frames;

the two second connecting pieces are respectively connected to two ends of the lower frame and connected with the corresponding side frames;

the supporting piece comprises a supporting plate and a rotating shaft connected with the side wall, close to the lower frame, of the supporting plate, the rotating shaft is in rotating fit with the shaft groove, and the bottom of the supporting plate is provided with an inserting plate groove; and

the two end covers are respectively inserted at two ends of the supporting plate, and each end cover comprises an inserting plate and a baffle plate, wherein the inserting plate is in inserting fit with the inserting plate groove, the baffle plate is connected with the inserting plate, the baffle plate is abutted to the supporting plate, and the baffle plates and the supporting plate jointly enclose to form an accommodating cavity.

2. The interconnected blackboard frame of claim 1, wherein the support member has an unfolded state in which it is turned to be perpendicular to the writing board and a folded state in which it is turned to be parallel to the writing board, and both end caps are turned together with the support member.

3. The interconnected blackboard frame in accordance with claim 2, wherein the outer wall of the shaft groove formed by the lower frame is provided with a notch, and the support member further includes a limit plate connecting the support plate and the rotating shaft;

when the supporting piece is in an unfolded state, the lower surface of the limiting plate is abutted to the lower surface of the outer wall of the notch, and when the supporting piece is in a folded state, the upper surface of the limiting plate is abutted to the upper surface of the outer wall of the notch.

4. The interconnected blackboard frame as claimed in claim 1, wherein the bottom of the insertion plate is provided with a wedge block, the height of the wedge block is gradually reduced along the insertion direction of the insertion plate, and the wedge block is abutted against the inner wall of the insertion plate groove.

5. The interconnected blackboard frame of claim 1, wherein the upper frame, the side frames and the lower frame are provided with mounting grooves at the sides far away from the writing board, and the first connecting piece and the second connecting piece include:

the corner connector is L-shaped, two ends of the corner connector of the first connecting piece are respectively inserted into the upper frame and the corresponding mounting grooves of the side frames, and two ends of the corner connector of the second connecting piece are respectively inserted into the lower frame and the corresponding mounting grooves of the side frames; and

the support piece, with the angle sign indicating number is connected, the support piece of first connecting piece with go up the frame with the edge parallel and level of side frame, the support piece of second connecting piece with lower frame with the edge parallel and level of side frame.

6. The interconnected blackboard frame of claim 5, wherein the corner connectors of the first connecting pieces are connected with the corresponding upper frame and the corresponding side frames through threaded fasteners, and the corner connectors of the second connecting pieces are connected with the corresponding lower frame and the corresponding side frames through threaded fasteners.

7. The interconnected blackboard frame of claim 1, wherein the upper frame, the side frames and the lower frame are all provided with a writing board groove, a lamp strip groove and a filter strip groove, and the lamp strip groove and the filter strip groove are all arranged close to the writing side of the writing board.

8. The interconnected blackboard frame of claim 7, wherein the light bar slot and the filter bar slot are completely overlapped in the width direction of the slot body, and the writing board slot and the light bar slot are partially overlapped in the width direction of the slot body.

9. Interconnection blackboard, its characterized in that includes:

the interconnected blackboard red outer frame of any one of claims 1 to 8, wherein the upper frame, the side frames and the lower frame are all provided with a writing board groove, a light bar groove and a filter bar groove;

a writing board mounted in the writing board groove;

the lamp strip is arranged in the lamp strip groove; and

and the filter strip is arranged in the filter strip groove.

10. The interactive blackboard of claim 9, wherein the filter grooves are disposed adjacent to the edge of the writing board frame, the filter has a first protrusion that is concave-convex matched with the filter grooves, and a second protrusion that is concave-convex matched with the edge of the writing board frame, and the first protrusion and the second protrusion form a slot for holding a wall of the filter grooves.

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