CN209657279U - Superposing type clipboard - Google Patents

Abstract

The utility model provides a kind of superposing type clipboard, belongs to complementary education product technical field, and including frame and the clipboard being embedded in frame, the back side of frame or the back side of clipboard are provided with the connector for being detachably connected with wisdom blackboard；In use, clipboard to be covered on to the glass pane surface of wisdom blackboard, pass through the relative position of connector fixed clipboard and wisdom blackboard；Also embedded with the infrared frame to connect with the writing surface of clipboard in frame, infrared frame is electrically connected with the control panel being arranged on frame or clipboard, and control panel is electrically connected with data line, and the output end of data line with the TV of wisdom blackboard for being electrically connected.Superposing type clipboard provided by the utility model solves teacher and writes that feel is poor, and font shows unsharp technical problem on nano-glass with chalk.

Description

Superposing type clipboard

Technical field

The utility model belongs to complementary education product technical field, is to be related to a kind of superposing type clipboard more specifically.

Background technique

In order to improve the promotion of teachers ' teaching quality and teaching equipment, in the market many companies research and develop a kind of intelligent blackboard or Person is wisdom blackboard, this product is a kind of panelized design concept, and wisdom blackboard includes that TV and two set up separately in TV two sides Glass plate, and TV surface is provided with nano-glass touch screen, by the use in school for a period of time, feeds back maximum asks Topic is that teacher writes that feel is poor, and font shows unintelligible with chalk on nano-glass.

Utility model content

The purpose of this utility model is to provide a kind of superposing type clipboards, it is intended to solve teacher with chalk in nano-glass On write that feel is poor, and font shows unsharp technical problem.

In order to achieve the above purposes, the technical solution adopted by the utility model is: provides a kind of superposing type clipboard, comprising: The back side of frame and the clipboard being embedded in the frame, the back side of the frame or the clipboard, which is provided with, to be used for and intelligence The connector that intelligent blackboard is detachably connected；In use, the clipboard to be covered on to the glass pane surface of the wisdom blackboard, lead to Cross the relative position of the connector fixed clipboard and the wisdom blackboard.

Further, described infrared also embedded with the infrared frame to connect with the writing surface of the clipboard in the frame Frame is electrically connected with the control panel being arranged on the frame or the clipboard, and the control panel is electrically connected with data line, The output end of the data line with the TV of the wisdom blackboard for being electrically connected；The control panel is described infrared for receiving The feedback signal of frame, analysis obtains handwriting trace of the user when writing on the clipboard, and the handwriting trace is led to The TV is crossed to show.

Further, the connector is U-shaped part of the opening towards the wisdom blackboard, and U-shaped part two side walls Between gap width be greater than the wisdom blackboard thickness.

Further, the connector includes first body being detachably connected with the frame and one end and described first Second body that part body is detachably connected, the other end is used to be detachably connected with the wisdom blackboard, first body and institute The vertical section difference for stating second body is L-shaped.

Further, the horizontal part of second body be stacked in first body horizontal part it is black far from the wisdom In the one side of plate, and successively it is detachably connected with the horizontal part of first body and the wisdom blackboard by bolt；It is described Being provided on the interconnecting piece that second body is connect with first body can pass through for the bolt and for the bolt along institute The slideway of the thickness direction sliding of wisdom blackboard is stated, is provided on the interconnecting piece that first body is connect with second body The mounting hole passed through for the bolt.

Further, the back side of the frame is provided with elastomeric pad, and the thickness of the elastomeric pad is greater than described first The thickness of part body and the frame connection part.

Further, the connector is equipped with two groups and is located at the top and bottom of the frame, is located at the frame Connector described in one group of top of the trellis is located at the top of the wisdom blackboard, positioned at connector described in one group of the base of frame Positioned at the lower section of the wisdom blackboard, connector described in two groups is matched for clamping tightly the wisdom blackboard；

Connector described in every group is by being equipped at least two connections being spaced apart along the length direction of the clipboard Part composition.

Further, the frame includes four frames for surrounding rectangle, and the two neighboring frame is removable by corner Connection is unloaded, the connector is connected on the corresponding back side of the frame or the back side of the clipboard；

The frame include matrix and set up separately in described matrix two sides and respectively with described matrix first gear connected vertically Plate and second baffle, the first baffle and the clipboard are matched for clamping tightly the infrared frame, the first baffle with it is described red Anti- sliding rib is provided in the one side of outline border contact, the length direction of the anti-sliding rib and the length direction of the first baffle are flat Row.

Further, the corner includes main body and two corner interconnecting pieces set up separately in the main body two sides, the base The both ends of body are respectively provided with the accommodating chamber for accommodating the corner interconnecting piece.

Further, described matrix vertical section is right angled triangle, and right angle is located at close to the side of the wisdom blackboard Bottom；

The cavity through described matrix both ends is set in described matrix, two accommodating chambers positioned at described matrix both ends are described The both ends open of cavity.

The beneficial effect of superposing type clipboard provided by the utility model is: compared with prior art, the utility model Superposing type clipboard is provided with the superposing type clipboard that can be superimposed the glass pane surface for being placed on wisdom blackboard, so that having purchased The school for having set wisdom blackboard or individual are without being removed or being replaced entire blackboard, only in the glass pane surface of wisdom blackboard Superposing type clipboard provided by the utility model is added, teacher can be eliminated and submitted a written statement to a higher authority writer with chalk in the glass plate of wisdom blackboard Sense difference and font show unsharp phenomenon, ensure that good effect of giving lessons.Wherein, connector and wisdom blackboard are removable Unload connection, convenient for user according to service condition by superposing type clipboard install on wisdom blackboard or by superposing type clipboard by intelligence It is removed on intelligent blackboard, it is easy for installation, meet its requirement.

Detailed description of the invention

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root Other attached drawings are obtained according to these attached drawings.

Fig. 1 is the structural schematic diagram of superposing type clipboard provided by the embodiment of the utility model；

Fig. 2 is the schematic view of the front view of superposing type clipboard provided by the embodiment of the utility model；

Fig. 3 is the sectional structure chart of the line A-A along Fig. 2；

Fig. 4 is the partial enlarged view in the portion A in Fig. 3；

Fig. 5 is the schematic perspective view of corner used by the utility model embodiment；

Fig. 6 is the knot of the two combination after superposing type clipboard provided by the embodiment of the utility model is installed to wisdom blackboard Structure schematic diagram；

Fig. 7 is the partial enlarged view in the portion B in Fig. 6.

In figure: 100, frame；110, frame；111, matrix；112, first baffle；113, second baffle；114, anti-sliding rib； 120, corner；121, main body；122, corner interconnecting piece；200, clipboard；300, wisdom blackboard；310, glass plate；320, TV； 400, connector；410, first body；420, second body；430, bolt；440, slideway；500, infrared frame；600, control plane Plate；700, elastomeric pad.

Specific embodiment

In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

Also referring to Fig. 1, Fig. 2 and Fig. 6, now superposing type clipboard provided by the embodiment of the utility model is said It is bright.The superposing type clipboard, including frame 100 and the clipboard being embedded in frame 100 200, the back side of frame 100 or book The back side for writing plate 200 is provided with connector 400 for being detachably connected with wisdom blackboard 300；In use, by clipboard 200 It is covered on 310 surface of glass plate of wisdom blackboard 300, passes through the phase of connector 400 fixed clipboard 200 and wisdom blackboard 300 To position.

Wisdom blackboard 300 includes TV 320 and sets up two glass plates 310 in 320 two sides of TV separately, in order to solve background The teacher that technology proposes writes problem, and the utility model proposes stackable 310 surfaces of glass plate for being placed on wisdom blackboard 300 Superposing type clipboard.When installation, clipboard 200 is covered on to 310 surface of glass plate of wisdom blackboard 300, passes through connector The relative position of 400 fixed clipboards 200 and wisdom blackboard 300.Wherein, clipboard 200 can be green plate, black plate body, wood Plate etc. writes good hand touch compared to glass plate 310, font shows clearly plate body.When writing, user can be more suitable for writing Clipboard 200 book above of clipboard 200 effectively prevents teacher with chalk and feels difference and font is shown in the nano-glass writer that submits a written statement to a higher authority Unsharp phenomenon occurs, and ensure that effect of giving lessons.

Superposing type clipboard provided by the embodiment of the utility model, compared with prior art, provided with placement can be superimposed Superposing type clipboard on 310 surface of glass plate of wisdom blackboard 300 so that purchased wisdom blackboard 300 school or Individual only adds the utility model on 310 surface of glass plate of wisdom blackboard 300 without being removed or being replaced entire blackboard The superposing type clipboard of offer, can eliminate teacher with chalk the glass plate 310 of wisdom blackboard 300 submit a written statement to a higher authority writer feel difference and word Body shows unsharp phenomenon, ensures that good effect of giving lessons.Wherein, connector 400 and wisdom blackboard 300 are detachable Connection, convenient for user according to service condition by superposing type clipboard install on wisdom blackboard 300 or by superposing type clipboard by It is removed on wisdom blackboard 300, it is easy for installation, meet its requirement.

Connector 400 can be detachably connected by bolt 430 and wisdom blackboard 300 in the present embodiment, can also pass through grafting Or the mode of bonding is detachably connected with wisdom blackboard 300.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, Fig. 2, Fig. 3 and figure are please referred to 6, also embedded with the infrared frame 500 to connect with the writing surface of clipboard 200 in frame 100, infrared frame 500 be arranged in frame 100 or clipboard 200 on control panel 600 be electrically connected, control panel 600 is electrically connected with data line, the output end of data line It is electrically connected for the TV 320 with wisdom blackboard 300；Control panel 600 is used to receive the feedback signal of infrared frame 500, analysis It obtains handwriting trace of the user when writing on clipboard 200, and the handwriting trace is shown by TV 320.

In use, data line is connect with the TV 320 of wisdom blackboard 300, infrared transmitter in infrared frame 500 and red Outer receiver work once electrified, the infrared transmitter positioned at 100 left or right side of frame issue infrared signal, it is right to be located at frame 100 Side or left side and the infrared remote receiver being oppositely arranged with above-mentioned infrared transmitter receives the infrared signal are located at frame at the same time The infrared transmitter of 100 tops or bottom issues infrared signal, be located at 100 bottom of frame or top and with above-mentioned infrared transmitter The infrared remote receiver being oppositely arranged receives the infrared signal, forms infra-red detection net on the positive surface of clipboard 200.

When the opaque articles such as the chalk of writing, water-color paintbrush or finger are write on 200 front of clipboard, opaque materials Body shelters from corresponding infrared signal, so that being located at infrared the connecing of (or lower section) and left side (or right side) above the opaque article Infrared signal can not be received by receiving device, and control panel 600 can identify the opaque article in book after receiving this information Write position coordinates, opaque article and 200 contact area size of clipboard and the motion track on plate 200.In the opaque materials When body continuous moving, the motion track of the opaque article can be obtained by above-mentioned principle, and then obtains it in clipboard 200 On handwriting trace, and the handwriting trace is transferred to TV 320 by data line, TV 320 shows the handwriting trace Come, since the time of intermediate analysis processing is very short, so that display speed differs very little with writing speed, it is closely synchronized.This Sample makes teacher in 200 book of clipboard, and writing on the blackboard can be in simultaneous display to TV 320, student can be real-time by TV 320 Written contents of the teacher on blackboard are watched, will not be lived not watch by the body check of teacher.

Superposing type clipboard provided by the embodiment of the utility model adds in the border of clipboard 200 compared with prior art If infrared frame 500, and control panel 600 has been added on clipboard 200 or frame 100, the setting of infrared frame 500 is so that book It writes 200 surface of plate and forms the infrared acquisition net that can identify writing position, realize superposing type clipboard and wisdom blackboard 300 Interconnection.When teacher's 200 book of clipboard on clipboard 200, the opaque articles such as chalk will be blocked in corresponding infrared frame 500 Corresponding infrared remote receiver normally receives infrared signal, and control panel 600 is determined according to the feedback signal of infrared frame 500 The position of above-mentioned opaque article and motion track, and then identify corresponding handwriting trace, and be electrically connected in data line and TV 320 When connecing, handwriting trace is shown by TV 320, the automatic identification and simultaneous display of writing on the blackboard is realized, is convenient for student views It sees, so that student can record writing on the blackboard in teacher's 200 book of clipboard in real time, without being re-recorded after teacher writes, thus It avoids because data board printed matter that indicates the type form or partial content of books and periodicals rings the phenomenon that listening to the teacher, ensure that good effect of giving lessons.

Memory module is set in control panel 600 in the present embodiment, handwriting trace can be stored, i.e., saved down writing on the blackboard Come, convenient for being watched after students in class, avoid student on class to record writing on the blackboard and can not showing of teaching of all ears teacher As occurring, effect of giving lessons is improved.

It, can will be old in addition, be additionally provided with the recording device being electrically connected with control panel 600 on clipboard 200 or frame 100 The sound recording that teacher teaches gets off, and is stored by memory module, convenient for content on student after class at any time class for review.Frame 100 can use aluminum alloy frame 100.

The infrared item that infrared frame 500 surrounds rectangle by four forms, and multiple infrared emissions can only be arranged in an infrared item Device or infrared remote receiver can also both be arranged infrared transmitter and be also provided with infrared remote receiver, be both arranged infrared transmitter be also provided with it is red When outer receiver, infrared transmitter and infrared remote receiver are staggered, and can effectively improve the accuracy of identification of handwriting trace, also identify Precision is not easily susceptible to the influence of chalk dust, is suitable for teaching and uses.In addition, two neighboring infrared item can connect, it can not also phase It connects.

Clipboard 200 is made of the baking lacquer panel, interlayer and backboard stacked gradually in the present embodiment, and infrared frame 500 is located at The front of baking lacquer panel, and infrared frame 500, baking lacquer panel, interlayer and backboard are superimposed by frame 100, realize book The function of writing and interconnect.Frame 100 is aluminum alloy frame 100.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, Fig. 1, Fig. 3 and figure are please referred to 4, connector 400 is U-shaped part of the opening towards wisdom blackboard 300, and the width in gap is greater than wisdom between U-shaped part two side walls The thickness of blackboard 300.

When installation, U-shaped part side side wall is connect by bolt 430 with the back side of frame 100 or clipboard 200, later Clipboard 200 is covered on to 310 surface of glass plate of wisdom blackboard 300, and U-shaped part be located on wisdom blackboard 300, it The other side side wall of U-shaped part is connect with the back side of wisdom blackboard 300 by bolt 430 afterwards.This makes the installation of connector 400 The front of wisdom blackboard 300 will not be damaged so that superposing type clipboard remove after, wisdom blackboard 300 can also continue to using.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, referring to Fig. 4, connector 400 include first body 410 being detachably connected with frame 100 and one end and first body 410 is detachably connected, the other end is used In second body 420 being detachably connected with wisdom blackboard 300, the vertical section of first body 410 and second body 420 is in respectively L-type.

Connector 400 includes first body 410 and second body 420 being detachably connected, and is convenient for connector 400 and wisdom Blackboard 300 or superposing type clipboard connect or separate operation, and after first body 410 or second body 420 are damaged, Without replacing entire connector 400, corresponding first body 410 or second body 420 are only replaced.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, referring to Fig. 7, second body 420 horizontal part is stacked in the horizontal part of first body 410 far from the one side of wisdom blackboard 300, and successively by bolt 430 It is detachably connected with the horizontal part and wisdom blackboard 300 of first body 410；The company that second body 420 is connect with first body 410 The slideway 440 that can be passed through for bolt 430 and for bolt 430 along the thickness direction sliding of wisdom blackboard 300 is provided in socket part, The mounting hole passed through for bolt 430 is provided on the interconnecting piece that first body 410 is connect with second body 420.

The setting of slideway 440 is so that gap between two plate faces being oppositely arranged in first body 410 and second body 420 Width can be adjusted according to the thickness of wisdom blackboard 300, i.e., the width in gap can be according to wisdom between U-shaped part two side walls The thickness of blackboard 300 is adjusted, so that superposing type clipboard can be matched with the wisdom blackboard 300 of different size, effectively extends The scope of application of superposing type clipboard, meets its requirement.

The setting of mounting hole without scene when bolt 430 is installed on first body 410 so that punch, and then improve spiral shell The installation of bolt 430 and superposing type clipboard and the operation rate when assembled of wisdom blackboard 300.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, Fig. 1 and Fig. 3, frame are please referred to The back side of frame 100 is provided with elastomeric pad 700, and the thickness of elastomeric pad 700 is greater than first body 410 and 100 interconnecting piece of frame The thickness divided.

When the setting of elastomeric pad 700 is so that install superposing type clipboard, superposing type clipboard can pass through elastomeric pad 700 It is abutted with wisdom blackboard 300, clipboard 200 and frame 100 directly will not be contacted directly with wisdom blackboard 300, avoid writing Hard collision occurs for the glass plate 310 of plate 200 and frame 100 and wisdom blackboard 300, and then avoids installation superposing type clipboard The phenomenon that glass plate 310 of Shi Zhihui blackboard 300 is crashed, to ensure that the safety of superposing type clipboard installation operation Property.

The thickness of elastomeric pad 700 is greater than the thickness of first body 410 and 100 coupling part of frame, when avoiding installation CONTACT WITH FRICTION occurs for the surface of first body 410 and wisdom blackboard 300, and then avoids the surface of wisdom blackboard 300 by first The phenomenon that part body 410 scratches, to ensure that the integrality on 300 surface of wisdom blackboard.

Elastomeric pad 700 can be rubber pad, foam pad etc. in the present embodiment.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, refering to fig. 1 to Fig. 3, connection Part 400 is equipped with two groups and is located at the top and bottom of frame 100, and one group of connector 400 positioned at 100 top of frame is located at The top of wisdom blackboard 300 is located at the lower section of wisdom blackboard 300, two groups of companies positioned at one group of connector 400 of 100 bottom of frame Fitting 400 is matched for clamping tightly wisdom blackboard 300.Every group of connector 400 is by being equipped at least two between the length direction of clipboard 200 It is formed every the connector 400 of distribution.

Connector 400 is respectively set in the top and bottom of frame 100, and passes through two groups of connectors 400 for wisdom blackboard 300 are matched for clamping tightly, and ensure that the stability of superposing type clipboard Yu 300 connection relationship of wisdom blackboard.Wherein it is located at 100 bottom of frame The connector 400 in portion is located at the lower section of wisdom blackboard 300, realizes after connector 400 is connect with wisdom blackboard 300 to superposing type The support of clipboard reduces the 400 stress size of connector positioned at 100 top of frame, so as to avoid position in use process The risk that connector 400 above wisdom blackboard 300 is deformed or is broken, it is ensured that superposing type clipboard and wisdom blackboard The stability of 300 relative positions.

Every group of connector 400 is by being equipped at least two 400 groups of connector be spaced apart along the length direction of clipboard 200 At, ensure that superposing type write board ends stress balance, after ensuring that superposing type clipboard is installed to wisdom blackboard 300 With the stability of 300 connection relationship of wisdom blackboard.Connector 400 is using the U-shaped part being open towards wisdom blackboard 300, it is ensured that Connector 400 and 300 contact area of wisdom blackboard are sufficiently large.The width in gap is greater than wisdom blackboard between U-shaped part two side walls 300 thickness so that installation when wisdom blackboard 300 can be inserted into the cavity of U-shaped part, further ensure connector 400 with The biggish contact area of wisdom blackboard 300.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, frame referring to FIG. 1 to FIG. 4, Frame 100 includes four frames 110 for surrounding rectangle, and two neighboring frame 110 is detachably connected by corner 120, connector 400 It is connected on the back side of corresponding frame 110 or the back side of clipboard 200；

Frame 110 include matrix 111 and set up separately in 111 two sides of matrix and respectively with the first gear connected vertically of matrix 111 Plate 112 and second baffle 113, first baffle 112 and clipboard 200 are matched for clamping tightly infrared frame 500, first baffle 112 with it is infrared Anti- sliding rib 114 is provided in the one side that frame 500 contacts, the length direction of anti-sliding rib 114 and the length direction of first baffle 112 are flat Row.

The setting of corner 120 realizes being detachably connected for two neighboring frame 110, convenient for user as needed by frame 100 on clipboard 200 by removing or installing to clipboard 200, and structure is simple, and it is convenient to repair.

The setting of anti-sliding rib 114 increases the frictional force between first baffle 112 and infrared frame 500, avoids and used The phenomenon that infrared frame 500 in frame 100 by falling in journey or infrared frame 500 and frame 100 there is a phenomenon where relative displacement generation, It ensure that the stability of infrared 500 working performance of frame and the accuracy of handwriting trace detection.

Anti- sliding rib 114 is integrally formed with first baffle 112 in the present embodiment, and frame 110 is an integral molding structure.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, referring to Fig. 4, anti-sliding rib 114 are equipped at least two, and are provided with interval between two neighboring anti-sliding rib 114.

Anti- sliding rib 114 is provided at least two, it is ensured that the frictional force between first baffle 112 and infrared frame 500 is enough Greatly.It is equipped with interval between two neighboring anti-sliding rib 114, infrared frame 500 is inserted into frame 100 as needed convenient for user, or By infrared frame 500 by being extracted in frame 100.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, referring to Fig. 5, corner 120 Set up the corner interconnecting piece 122 in 121 two sides of main body separately including main body 121 and two, the both ends of matrix 111 are respectively provided with appearance Receive the accommodating chamber of corner interconnecting piece 122.

When assembling frame 100, first each frame 110 is mounted respectively on the corresponding seamed edge of clipboard 200, later by corner A 120 corner interconnecting piece 122 is inserted into the accommodating chamber of a frame 110, then by another corner interconnecting piece of corner 120 122 insertions in the accommodating chamber of the vertical another frame 110 of front bezel 110, realize the connection of two neighboring frame 110 therewith.Side The setting of angle interconnecting piece 122 and accommodating chamber realizes the grafting of corner 120 Yu frame 110, it is ensured that the assembling of frame 100 is split The quick progress of operation.

As a kind of specific embodiment of superposing type clipboard provided by the utility model, referring to Fig. 5, matrix 111 Vertical section is right angled triangle, and right angle is located at the bottom close to the side of wisdom blackboard 300.It sets in matrix 111 through matrix The cavity at 111 both ends, two accommodating chambers positioned at 111 both ends of matrix are the both ends open of cavity.

The vertical section of matrix 111 is right angled triangle, and the thickness of matrix 111 is from one end far from clipboard 200 to leaning on One end of nearly clipboard 200 is gradually increased, and the peripheral edge portion of frame 100 is relatively narrow, so that the manufacture material requested of frame 100 is less, And the front that user presses frame 100 when being easily installed superposing type clipboard makes the positive face paste of frame 100 Yu wisdom blackboard 300 It closes, ensure that the stability of superposing type clipboard Yu 300 connection relationship of wisdom blackboard.

Matrix 111 ensures the lighter in weight of matrix 111 and frame 100, easy to carry and installation using hollow structure.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. superposing type clipboard, it is characterised in that: including frame and the clipboard being embedded in the frame, the back of the frame Face or the back side of the clipboard are provided with the connector for being detachably connected with wisdom blackboard；In use, by the writing Plate is covered on the glass pane surface of the wisdom blackboard, passes through the fixed clipboard of the connector and the wisdom blackboard Relative position.

2. superposing type clipboard as described in claim 1, it is characterised in that: be also embedded with and the clipboard in the frame The infrared frame that writing surface connects, the infrared frame are electrically connected with the control panel being arranged on the frame or the clipboard It connects, the control panel is electrically connected with data line, and the output end of the data line is used to be electrically connected with the TV of the wisdom blackboard It connects；The control panel is used to receive the feedback signal of the infrared frame, and analysis obtains user when writing on the clipboard Handwriting trace, and the handwriting trace is shown by the TV.

3. superposing type clipboard as described in claim 1, it is characterised in that: the connector is that opening is black towards the wisdom The U-shaped part of plate, and the width in gap is greater than the thickness of the wisdom blackboard between the U-shaped part two side walls.

4. superposing type clipboard as claimed in claim 3, it is characterised in that: the connector includes detachable with the frame First body and one end of connection are detachably connected with first body, the other end with the wisdom blackboard for detachably connecting The vertical section difference of second body connect, first body and second body is L-shaped.

5. superposing type clipboard as claimed in claim 4, it is characterised in that: the horizontal part of second body is stacked in described In one side of the horizontal part of first body far from the wisdom blackboard, and pass through the bolt successively horizontal part with first body It is detachably connected with the wisdom blackboard；Being provided on the interconnecting piece that second body is connect with first body can be for The bolt pass through and for the bolt along the wisdom blackboard thickness direction slide slideway, first body with it is described The mounting hole passed through for the bolt is provided on the interconnecting piece of second body connection.

6. superposing type clipboard as claimed in claim 4, it is characterised in that: the back side of the frame is provided with elastomeric pad, The thickness of the elastomeric pad is greater than the thickness of first body and the frame connection part.

7. superposing type clipboard as claimed in any one of claims 1 to 6, it is characterised in that: the connector is equipped with two groups and divides Not Wei Yu the frame top and bottom, be located at the wisdom blackboard positioned at connector described in one group of the frame roof Top, the lower section of the wisdom blackboard is located at positioned at connector described in one group of the base of frame, and connector described in two groups is matched The co-clip tightly wisdom blackboard；

Connector described in every group is by being equipped at least two connector groups being spaced apart along the length direction of the clipboard At.

8. superposing type clipboard as claimed in claim 2, it is characterised in that: the frame includes four sides for surrounding rectangle Frame, the two neighboring frame are detachably connected by corner, and the connector is connected to the back side or the institute of the corresponding frame It states on the back side of clipboard；

The frame include matrix and set up separately in described matrix two sides and respectively with described matrix first baffle connected vertically and Second baffle, the first baffle and the clipboard are matched for clamping tightly the infrared frame, the first baffle and the infrared frame Anti- sliding rib is provided in the one side of contact, the length direction of the anti-sliding rib is parallel with the length direction of the first baffle.

9. superposing type clipboard as claimed in claim 8, it is characterised in that: the corner includes that main body and two set up separately in institute The corner interconnecting piece of main body two sides is stated, the both ends of described matrix are respectively provided with the accommodating chamber for accommodating the corner interconnecting piece.

10. superposing type clipboard as claimed in claim 8 or 9, it is characterised in that: described matrix vertical section is right angle trigonometry Shape, and right angle is located at the bottom close to the side of the wisdom blackboard；

The cavity through described matrix both ends is set in described matrix, two accommodating chambers positioned at described matrix both ends are the cavity Both ends open.