CN107578652A - A kind of novel interactive education and instruction exhibiting device - Google Patents

A kind of novel interactive education and instruction exhibiting device Download PDF

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Publication number
CN107578652A
CN107578652A CN201711054282.3A CN201711054282A CN107578652A CN 107578652 A CN107578652 A CN 107578652A CN 201711054282 A CN201711054282 A CN 201711054282A CN 107578652 A CN107578652 A CN 107578652A
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CN
China
Prior art keywords
groove
chute
clipboard
block
main body
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Granted
Application number
CN201711054282.3A
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Chinese (zh)
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CN107578652B (en
Inventor
郭丽静
楼世洲
周思远
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Shenzhen Zhisike Culture Education Technology Co ltd
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Zhejiang Normal University CJNU
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Priority to CN201711054282.3A priority Critical patent/CN107578652B/en
Publication of CN107578652A publication Critical patent/CN107578652A/en
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Abstract

The invention discloses a kind of novel interactive education and instruction exhibiting device,Including main body,The leading flank of main body is provided with the first groove,The first clipboard is provided with first groove,Second clipboard and the 3rd clipboard,The trailing flank of first clipboard and the second clipboard is fixedly connected with the first sliding block,The first chute being provided with first groove is corresponding with the first sliding block,The downside of first groove is provided with the second chute,Second chute and the second sliding block of the second clipboard bottom are slidably connected,Slot to make way lower wall is provided with the 5th chute,5th chute and the Four-slider of the 3rd clipboard bottom are slidably connected,Groove is provided with Four-slider,It is corresponding with groove that the both sides side wall of 5th chute is provided with the second slot,The present invention combines traditional blackboard with multimedia projection education,Can effectively it improve learning efficiency,The interaction between student and teacher is enhanced again,It is convenient and practical.

Description

A kind of novel interactive education and instruction exhibiting device
Technical field
The present invention relates to teaching aid technical field, specially a kind of novel interactive education and instruction exhibiting device.
Background technology
School can be imparted knowledge to students using to computer, multimedia projector etc. more at present, compare with traditional blackboard, For the educational aids such as chalk, the learning efficiency of student can be more improved, can also mitigate the writing burden of teacher, but multimedia is taught Learning device needs to carry out courseware in advance, and real-time typing is cumbersome during displaying, also inconvenient teacher and classmate Interaction, next will be directly switch to after one page PPT has been said, allow the classmate of some slowness of thinking not catch up with the section of teacher Play, do not reach the effect of study, and traditional blackboard has this advantage, such as changeability is strong, facilitates performance, is easy to learn Raw interaction of appearing on the stage, if multimedia projection education and blackboard can be combined, the learning efficiency and mutually of student will be greatly improved Dynamic effect, if traditional blackboard panel damage needs to change a monoblock blackboard, waste of resource in addition, and it is typically all to be fixed on wall On, it has not been convenient to mobile use is restricted, and is this it is proposed that a kind of novel interactive education and instruction exhibiting device.
The content of the invention
It is an object of the invention to provide a kind of novel interactive education and instruction exhibiting device, to solve above-mentioned background technology The problem of middle proposition.
To achieve the above object, the present invention provides following technical scheme:A kind of novel interactive education and instruction exhibiting device, Including main body, the leading flank of the main body is provided with the first groove, and the first clipboard, the second clipboard are provided with first groove With the 3rd clipboard, the trailing flank of first clipboard and the second clipboard is fixedly connected with the first sliding block, and described first is recessed The first chute being provided with groove is corresponding with the first sliding block, and first sliding block is slided in the first chute, first groove Downside be provided with the second chute, second chute and the second sliding block of the second clipboard bottom are slidably connected, described first The lower right corner of groove is provided with slot to make way, and the slot to make way lower wall is provided with the 5th chute, the 5th chute and the 3rd clipboard The Four-slider that bottom is fixedly connected is slidably connected, and groove, the both sides side wall of the 5th chute are provided with the Four-slider It is provided with two group of second slot, the second fixture block is fixedly connected with by the 3rd spring on the inwall of second slot, described The first slot is opened on the two side of one chute, first slot is fixedly connected by the first spring of inside with the first fixture block, First fixture block is flexibly connected with the first sliding block, and the upper right side of the main body is fixedly connected with rack, in the rack Portion is provided with cavity, and the second groove is provided with the left and right sides inwall of the cavity, is rotated on two second groove inner walls It is connected with first rotating shaft, the one end of the both ends of the first rotating shaft respectively with two second springs is connected, the second spring The other end is fixed on the inwall of the second groove, and the front side wall of the cavity is provided with outlet, and the one of the first rotating shaft and curtain End is fixedly connected, and the other end of the curtain is provided with retainer ring, and the bottom of the main body is provided with the fixation corresponding with retainer ring Bar, the lower rotation of the main body rear wall are connected with contiguous block, and the both sides of the contiguous block have been fixedly connected with the second rotating shaft, Second rotating shaft runs through the side wall of main body, and multiple 4th grooves, the main body the corresponding 4th are uniformly provided with the contiguous block The position of groove is provided with the 4th chute, and the 4th chute and the 4th groove are flexibly connected with the 3rd sliding block, the 3rd sliding block It is rotatablely connected by the 3rd rotating shaft and two support bars, hook is equipped with two support bars, two support bars passes through hook point Not with the both ends clamping of connects chain.
Preferably, the trailing flank of first sliding block is fixedly connected with limited block, first chute be provided with it is spacing The 3rd corresponding chute of block.
Preferably, the left side of the main body and movable block clamping, it is fixedly connected with and the first chute phase on the movable block Corresponding inserted block.
Preferably, the bottom side of first clipboard, the second clipboard and the 3rd clipboard is provided with the 3rd groove, described It is connected, is fixedly connected with the side wall of the 3rd groove and baffle plate with flapper by the first rotating bar on the inwall of 3rd groove The block of flexible connection.
Preferably, the fix bar is rotatably connected on the bottom of main body by the second rotating bar.
Preferably, it is equipped with corresponding bolt hole on the main body, the 4th groove, the 3rd sliding block and the 4th chute.
Preferably, the bolt hole on the 4th groove runs through contiguous block.
Preferably, the block is magnetic material, and the position being flexibly connected on the madial wall of baffle plate with block is provided with iron Piece.
Compared with prior art, the beneficial effects of the invention are as follows:The present invention is by traditional blackboard and multimedia projection education Combine, can effectively improve learning efficiency, and can is enough to write on the blackboard the idea of some emphasis knowledge and student, increases Strong interaction between student and teacher, and blackboard be it is assembled can change position to allow teacher preferably to express, if certain Block clipboard damages, and can also facilitate dismounting and change, without changing a monoblock blackboard again, has saved resource, is supported by adjusting The position of bar supports blackboard or blackboard is laid flat as desk, is allowed by moveable clipboard between teachers and students preferably mutually It is dynamic, it is convenient and practical.
Brief description of the drawings
Fig. 1 is the use state figure of the present invention;
The clipboard that Fig. 2 is the present invention moves front position graph of a relation;
Fig. 3 is location diagram after the clipboard of the present invention moves;
Fig. 4 is the internal structure schematic diagram of the present invention;
Fig. 5 is Fig. 4 of present invention b portions enlarged drawing;
Fig. 6 is the partial sectional view at the 5th chute of the invention;
Fig. 7 is the back structures schematic diagram of the first clipboard of the invention;
Fig. 8 is the partial sectional view at the first chute of the invention;
Fig. 9 is the partial sectional view at limited block of the present invention;
Figure 10 is the partial structural diagram at fix bar of the present invention;
Figure 11 is the partial structural diagram at baffle plate of the present invention;
Figure 12 is the structural representation at baffle plate of the present invention;
Figure 13 is the sectional view of rack of the present invention;
Figure 14 is the partial structural diagram of the second chute of the invention;
Figure 15 is the structural representation on rear side of main body of the present invention;
Figure 16 is Figure 15 of present invention a portions enlarged drawing;
Figure 17 is the support bar use state figure I of the present invention;
Figure 18 is the support bar use state figure II of the present invention;
Figure 19 is the partial sectional view at the contiguous block of the present invention;
Figure 20 is Figure 18 of present invention c portions enlarged drawing;
Figure 21 is the contiguous block dimensional structure diagram of the present invention.
In figure:1st, main body, the 2, first groove, the 3, first clipboard, the 301, first slide plate, the 302, second slide plate, 303, Three slide plates, the 304, the 4th slide plate, the 305, the 5th slide plate, the 306, the 6th slide plate, the 4, second clipboard, the 5, the 3rd clipboard, 6, One sliding block, the 7, first chute, the 8, second chute, the 9, second sliding block, 10, slot to make way, the 11, first slot, the 12, first spring, 13, First fixture block, 14, rack, 15, cavity, the 16, second groove, 17, first rotating shaft, 18, second spring, 19, curtain, 20, go out Mouthful, 21, retainer ring, 22, fix bar, 23, limited block, the 24, the 3rd chute, 25, movable block, 26, inserted block, the 27, the 3rd groove, 28th, the first rotating bar, 29, baffle plate, 30, block, the 31, second rotating bar, 32, contiguous block, the 33, second rotating shaft, the 34, the 4th is recessed Groove, the 35, the 4th chute, the 36, the 3rd sliding block, 37, support bar, 38, bolt hole, 39, connects chain, the 40, the 3rd rotating shaft, the 41, the 5th Chute, 42, Four-slider, 43, groove, the 44, second slot, the 45, the 3rd spring, the 46, second fixture block, 47, hook.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Fig. 1-2 1 is referred to, the present invention provides a kind of technical scheme:A kind of novel interactive education and instruction exhibiting device, bag Main body 1 is included, the leading flank of the main body 1 is provided with the first groove 2, the first clipboard 3, the second book are provided with first groove 2 The clipboard 5 of plate 4 and the 3rd is write, as shown in Fig. 2 the second clipboard 4 and the 3rd clipboard 5 are located at whole device under original state Most following, the clipboard of the top of the second clipboard 4 and the 3rd clipboard 5 is the first clipboard 3, first clipboard 3 The first sliding block 6 is fixedly connected with the trailing flank of the second clipboard 4, for being oriented to, the first clipboard 3 and the second clipboard 4 Back structures are identicals, and the first clipboard 3 and the second clipboard 4 are slided up and down by the first sliding block 6, described first The first chute 7 being provided with groove 2 is corresponding with the first sliding block 6, convenient to slide, and first sliding block 6 is slided in the first chute 7 Interior, the downside of first groove 2 is provided with the second chute 8, and the second of the bottom of 8 and second clipboard of the second chute 4 slides Block 9 is slidably connected, and it is to slide into the 3rd writing in order to which the second clipboard 4 can be turned right that the second sliding block 9 slides in the second chute 8 The position of plate 5, so as to vacating space, the lower right corner of first groove 2 is provided with slot to make way 10, and the lower wall of slot to make way 10 is opened There is the 5th chute 41, the 5th chute 41 communicates with the second chute 8, and the 4th of the 5th chute 41 and the bottom of the 3rd clipboard 5 the Sliding block 42 is slidably connected, and groove 43 is provided with the Four-slider 42, and the both sides side wall of the 5th chute 41 is provided with two groups Second slot 44 is corresponding with groove 43, and the second card is fixedly connected with by the 3rd spring 45 on the inwall of second slot 44 Block 46, under original state, the second fixture block 46 is inserted in groove 43, it is necessary to when the 3rd clipboard 5 is pushed in, because second The two sides of fixture block 46 are inclined-plane, can push in and be blocked by one group of second fixture block 46 of the inside, also can be outer when pulling out Second fixture block 46 in face blocks, and facilitates the spacing of the 3rd clipboard 5, the first slot 11 is opened on the two side of first chute 7, First slot 11 is fixedly connected by the first spring 12 of inside with the first fixture block 13, and first fixture block 13 and first is slided Block 6 is flexibly connected, and the first fixture block 13 can hinder the first clipboard 3 to move up and down, and does not interfere with the side-to-side movement of the first clipboard 3, When firmly move down the first clipboard 3 when, can be the first fixture block 13 because the downside of the first sliding block 6 is inclined-plane Promote in the first slot 11, so as to move down the first clipboard 3, when firmly up the first clipboard 3 are moved, Because the downside of the first fixture block 13 is inclined-plane, it can be got into by the first sliding block 6 in the first slot 11, so as to up move the One clipboard 3, the first fixture block 13 primarily to prevent it is on the move between the first clipboard 3 when, the first book above To write plate 3 and can directly slide, there is provided certain resistance is prevented from dropping, and the upper right side of the main body 1 is fixedly connected with rack 14, Cavity 15 is provided with inside the rack 14, the second groove 16, two institutes are provided with the left and right sides inwall of the cavity 15 State and first rotating shaft 17 is rotatably connected on the inwall of the second groove 16, second spring is socketed with the both ends of the first rotating shaft 17 18, the second spring 18 is fixed on the inwall of the second groove 16, and the front side wall of the cavity 15 is provided with outlet 20, curtain 19 Can pull out and use at outlet 20, the first rotating shaft 17 be fixedly connected with one end of curtain 19, the curtain 19 it is another End is provided with retainer ring 21, and the bottom of the main body 1 is provided with the fix bar 22 corresponding with retainer ring 21, and fix bar 22 is used for fixing Curtain 19, the lower rotation of the rear wall of main body 1 are connected with contiguous block 32, and the side of the contiguous block 32 is fixedly connected with Two rotating shafts 33, rotating the second rotating shaft 33 can drive contiguous block 32 to rotate, and the shape of contiguous block 32 is as shown in figure 21, its cross section For the combination of a semicircle and rectangle, it is merely able to rotate 90 degree toward a direction, and after 90 degree of rotation, pass through main body 1 and connection Bolt hole 38 on block 32 can be fixed, and second rotating shaft 33 runs through the side wall of main body 1, is uniformly opened on the contiguous block 32 There are multiple 4th grooves 34, the quantity of the 4th groove 34 is 3, and the position of corresponding 4th groove 34 of the main body 1 is provided with the 4th Chute 35, the 4th chute 35 and the 4th groove 34 are flexibly connected with the 3rd sliding block 36, the 4th groove 34 and the 4th chute 35 Communicate, and the 3rd sliding block 36 can slide clamping in the 4th groove 34 and the 4th chute 35, and further fixed by bolt, 3rd sliding block 36 is slidably connected in the 4th chute 35, and the 3rd sliding block 36 passes through the 3rd rotating shaft 40 and two support bars 37 rotation connections, are equipped with hook 47 on two support bars 37, and the rotation between two support bars 37 is independent of each other, two supports Bar 37 make it that the angle that support bar 37 rotates is limited by linking up with the 47 both ends clampings with connects chain 39 respectively, connects chain 39, And the height of main body 1 can be adjusted by adjusting hook 47 and the length of the clamping of connects chain 39, connects chain 39 use when Hou Caihui is hung up, and to be taken off and is put on one side after having used, when needing horizontal positioned main body 1 (as shown in figure 18), be passed through Bolt connects the bolt hole 38 in the 3rd sliding block 36 and the 4th chute 35, so that the installation site of support bar 37 is fixed, needs By (as shown in figure 17) during 1 vertical display of main body, the 3rd sliding block 36 is slided into the 4th groove 34, then makes contiguous block 32 Bolt hole 38 in 3rd sliding block 36, contiguous block 32 and main body 1, is sequentially connected by rotation 90 by bolt, so as to realize installation Position is fixed.
Further optimization, the trailing flank of first sliding block 6 are fixedly connected with limited block 23, and limited block 23 can be the One clipboard 3 is fixed on the body 1, is not fallen out, and 7 are provided with threeth chute corresponding with limited block 23 on first chute 24。
Further optimization, left side and the clamping of movable block 25 of the main body 1, clamping change writing in order to realize Plate, the inserted block 26 corresponding with the first chute 7 is fixedly connected with the movable block 25, movable block 25 after clamping main body 1 with using Bolt is fixed, and inserted block 26 is used for preventing the first clipboard 3 from horizontally slipping.
Further optimization, the bottom side of first clipboard 3, the second clipboard 4 and the 3rd clipboard 5 is provided with the 3rd Groove 27, it is rotatablely connected by the first rotating bar 28 with baffle plate 29 on the inwall of the 3rd groove 27, the side of the 3rd groove 27 The block 30 being flexibly connected with baffle plate 29 is fixedly connected with wall, it is both beautiful so as to obtain the 3rd groove 27 that can be hidden Handle can be regarded again by, which seeing, move clipboard, and on this basis, the block 30 is magnetic material, and the madial wall of baffle plate 29 The upper position being flexibly connected with block 30 is provided with iron plate, the solid and reliable property of raising baffle plate 29 not used time.
Further optimization, the fix bar 22 are rotatably connected on the bottom of main body 1 by the second rotating bar 31, are being not required to When using curtain 19, it is possible to fix bar 22 is gone to side, people will not be met, it is necessary to using when go back to again Come.
It is further to optimize, it is equipped with the main body 1, the 4th groove 34, the 3rd sliding block 36 and the 4th chute 35 relative The bolt hole 38 answered, as shown in figure 19, when supportive body 1 is needed, contiguous block 32 is rotated 90 degree, then worn bolt Twisted inward again after the bolt hole 38 crossed on the 3rd sliding block 36, so as to run through bolt of the 4th groove 34 namely on contiguous block 32 Hole 38 is connected with the bolt hole 38 in main body 1 again, and so as to being fixed with main body 1, then separately two support bars 37 prop up master Body 1, when needing main body 1 to be laid flat when teaching desk, contiguous block 32, which is gone back to, to be come, and is slided the 3rd sliding block 36 and is located among main body Position, then the 3rd sliding block 36 is fixed up with main body 1 by bolt, support bar 37 is separated, so as to propping up main body 1 Support.
Operation principle:When curtain 19 are needed to use, curtain 19 is pulled down, retainer ring 21 is then enclosed on fixation It can be used on bar 22, the first clipboard 3 includes the first slide plate 301, the second slide plate 302, the 3rd slide plate as shown in Figures 2 and 3 303rd, the 4th slide plate 304, the 5th slide plate 305 and the 6th slide plate 306, when wanting the 6th slide plate 306 to be moved to upper left position, First the 3rd clipboard 5 is promoted in slot to make way 10, the position of the 3rd clipboard 5 before then the second clipboard 4 is shifted to the right to, then The position of second clipboard 4 before 5th slide plate 305 is moved down into, then moves to left the 6th slide plate 306, under the 4th slide plate 304 Move, the second slide plate 302 moves down, and the first slide plate 301 moves to right, and the 3rd slide plate 303 moves up, and the 6th slide plate 306 moves up, the 4th slide plate 304 move to left, and the second slide plate 302 moves down, and the first slide plate 301 moves down, and the 3rd slide plate 303 moves to right, and the 6th slide plate 306 moves up, now 6th slide plate 306 is located at the initial position of the first slide plate 301, and then the 4th slide plate 304 is moved up, and the 5th slide plate 305 moves up, the Two clipboards 4 are moved to left, and finally the 3rd clipboard 5 is pulled out, and when needing to change certain block clipboard, first pull down movable block 25, so Clipboard is removed afterwards and changes new clipboard, has finally blocked movable block 25 again and has been fastened with bolt, generally blackboard is to hang On the wall, if needing to use teaching demonstration device when outside classroom, contiguous block 32 is rotated 90 degree, the 3rd sliding block 36th, contiguous block 32, main body 1 are fixed together, and then separately two support bars 37 prop up main body 1, when then needing main body 1 It is laid flat when teaching desk, contiguous block 32 is gone back to come, slides the position that the 3rd sliding block 36 is located among main body 1, Ran Houtong Cross bolt to be fixed up the 3rd sliding block 36 with main body 1, separate support bar 37, then main body 1 is supported, pass through the company of regulation Chain link 39 adjusts the distance between two support bars 37, and so as to adjust the height of overall main body 1, the present invention is by traditional blackboard Combine with multimedia teaching, can effectively improve learning efficiency, and can is enough some emphasis knowledge and the idea of student Write on the blackboard, enhance the interaction between student and teacher, it is very useful.
Although an embodiment of the present invention has been shown and described, for those of ordinary skills, Ke Yili Solution without departing from the principles and spirit of the present invention can to these embodiments carry out it is a variety of change, modification, replace and Modification, the scope of the present invention is defined by the appended.

Claims (8)

1. a kind of novel interactive education and instruction exhibiting device, including main body (1), it is characterised in that:The front side of the main body (1) Face is provided with the first groove (2), and the first clipboard (3), the second clipboard (4) and the 3rd writing are provided with first groove (2) The trailing flank of plate (5), first clipboard (3) and the second clipboard (4) is fixedly connected with the first sliding block (6), and described first The first chute (7) being provided with groove (2) is corresponding with the first sliding block (6), and first sliding block (6) is slided in the first chute (7) in, the downside of first groove (2) is provided with the second chute (8), second chute (8) and the second clipboard (4) bottom Second sliding block (9) in portion is slidably connected, and the lower right corner of first groove (2) is provided with slot to make way (10), the slot to make way (10) Lower wall is provided with the 5th chute (41), the Four-slider that the 5th chute (41) is fixedly connected with the 3rd clipboard (5) bottom (42) it is slidably connected, groove (43) is provided with the Four-slider (42), the both sides side wall of the 5th chute (41) is provided with Two group of second slot (44), the second fixture block is fixedly connected with by the 3rd spring (45) on the inwall of second slot (44) (46) the first slot (11), the first bullet that first slot (11) passes through inside, are opened on the two side of first chute (7) Spring (12) is fixedly connected with the first fixture block (13), and first fixture block (13) is flexibly connected with the first sliding block (6), the main body (1) upper right side is fixedly connected with rack (14), and cavity (15) is provided with inside the rack (14), the cavity (15) The second groove (16) is provided with the inwall of the left and right sides, first rotating shaft is rotatably connected on two the second groove (16) inwalls (17), the one end of the both ends of the first rotating shaft (17) respectively with two second springs (18) is connected, the second spring (18) The other end be fixed on the inwall of the second groove (16), the front side wall of the cavity (15) is provided with outlet (20), described first Rotating shaft (17) is fixedly connected with one end of curtain (19), and the other end of the curtain (19) is provided with retainer ring (21), the main body (1) bottom is provided with the fix bar (22) corresponding with retainer ring (21), and the lower rotation of main body (1) rear wall is connected with Contiguous block (32), the both sides of the contiguous block (32) have been fixedly connected with the second rotating shaft (33), and second rotating shaft (33) is run through The side wall of main body (1), multiple 4th grooves (34) are uniformly provided with the contiguous block (32), and the main body (1) the corresponding 4th is recessed The position of groove (34) is provided with the 4th chute (35), the 4th chute (35) and the 4th groove (34) and the activity of the 3rd sliding block (36) Connection, the 3rd sliding block (36) are rotatablely connected by the 3rd rotating shaft (40) and two support bars (37), two support bars (37) On be equipped with hook (47), two support bars (37), which pass through, links up with (47) both ends clamping with connects chain (39) respectively.
A kind of 2. novel interactive education and instruction exhibiting device according to claim 1, it is characterised in that:Described first slides The trailing flank of block (6) is fixedly connected with limited block (23), and (7) are provided with corresponding with limited block (23) the on first chute Three chutes (24).
A kind of 3. novel interactive education and instruction exhibiting device according to claim 1, it is characterised in that:The main body (1) left side and movable block (25) clamping, the inserted block corresponding with the first chute (7) is fixedly connected with the movable block (25) (26)。
A kind of 4. novel interactive education and instruction exhibiting device according to claim 1, it is characterised in that:First book The bottom side for writing plate (3), the second clipboard (4) and the 3rd clipboard (5) is provided with the 3rd groove (27), the 3rd groove (27) Inwall on be rotatablely connected by the first rotating bar (28) and baffle plate (29), be fixedly connected with the side wall of the 3rd groove (27) with The block (30) that baffle plate (29) is flexibly connected.
A kind of 5. novel interactive education and instruction exhibiting device according to claim 1, it is characterised in that:The fix bar (22) bottom of main body (1) is rotatably connected on by the second rotating bar (31).
A kind of 6. novel interactive education and instruction exhibiting device according to claim 1, it is characterised in that:The main body (1), it is equipped with corresponding bolt hole (38) on the 4th groove (34), the 3rd sliding block (36) and the 4th chute (35).
A kind of 7. novel interactive education and instruction exhibiting device according to claim 6, it is characterised in that:Described 4th is recessed Bolt hole (38) on groove (34) runs through contiguous block (32)
A kind of 8. novel interactive education and instruction exhibiting device according to claim 4, it is characterised in that:The block (30) it is magnetic material, and the position being flexibly connected on the madial wall of baffle plate (29) with block (30) is provided with iron plate.
CN201711054282.3A 2017-10-31 2017-10-31 Novel interactive education and teaching show device Active CN107578652B (en)

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