CN209993118U - Multimedia teaching demonstration device - Google Patents
Multimedia teaching demonstration device Download PDFInfo
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- CN209993118U CN209993118U CN201920077546.5U CN201920077546U CN209993118U CN 209993118 U CN209993118 U CN 209993118U CN 201920077546 U CN201920077546 U CN 201920077546U CN 209993118 U CN209993118 U CN 209993118U
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Abstract
The utility model discloses a multimedia teaching presentation device, include: the frame is sequentially divided into a panel area I, a panel area II and a panel area III from left to right by a partition plate, and telescopic support legs are arranged below the panel area I, the panel area II and the panel area III; the first writing board is embedded into the first panel area and the second panel area respectively, the second writing board which slides up and down is arranged in front of the first writing board, a plurality of first grooves are longitudinally arranged on two sides of the back surface of the second writing board, spherical parts and first springs are sequentially arranged on the first grooves from the bottom ends, round holes smaller than the diameter of the spherical parts are formed in cover plates of openings of the first grooves, and the spherical parts are stretched out of the round holes and connected into the arc-shaped grooves in a volume smaller than half; an electronic white board is movably arranged in the panel area II; and the fixing device comprises a connecting column and a stud which are respectively arranged between the upper edges and the lower edges of the electronic whiteboard and the panel area, and the second spring is sleeved outside the connecting column. The writing board has the advantages that the writing area is increased, the contents on the writing board and the electronic whiteboard are displayed simultaneously, and the electronic whiteboard is convenient to install, fix and disassemble.
Description
Technical Field
The utility model relates to a teaching device field, in particular to multimedia teaching presentation device.
Background
At present, the generation of multimedia brings great convenience to the life and work of people, and in schools, a teacher combines multimedia for content explanation, which is also a form which is commonly used. In the current teaching process, one mode is a projection curtain mode, and the other mode is an electronic whiteboard projection mode and is combined with a common writing board or a common blackboard for teaching demonstration, but in the current school, the projection curtain is generally hung in front of the blackboard, a motor drives a scroll to fold and unfold the projection curtain, and the projection curtain occupies a large area of the blackboard, so that the use area of the teaching combined with the blackboard for writing content explanation is small; the projection curtain is directly hung on one side, so that the blackboard is not influenced, but the operation of the extensive classroom is inconvenient for students in all directions to watch; the electronic whiteboard is directly embedded into one side or the middle of the blackboard for use, but the electronic whiteboard is embedded and installed in the form, once the electronic whiteboard has problems to be overhauled or replaced, the electronic whiteboard is difficult to detach, and the electronic whiteboard is not beneficial to continuous use; in addition, in having the patent, push-and-pull about blackboard or board, expose the whiteboard that sets up in the middle of with, although blackboard or board set up to the bilayer, there is great writing area, but after writing with the double-deck blackboard of one side, when can also combining whiteboard to the content and explaining on the double-deck blackboard, just inconvenient realization, can only show simultaneously with the content and the whiteboard of a blackboard, the teacher of being not convenient for shows the content of saying simultaneously on class, also not convenient for the student comb the content on blackboard and the whiteboard coherently simultaneously, be unfavorable for merging the front and back knowledge point surveyability of the content on class. Therefore, it is necessary to provide a teaching demonstration device which can reasonably integrate a blackboard or a writing board with multimedia for use, so as to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model also aims at providing a multimedia teaching presentation device can demonstrate the content on all boards and whiteboard simultaneously, does benefit to the student and watches to can also be convenient with whiteboard installation fixed and dismantlement.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a multimedia teaching presentation apparatus including:
the frame is arranged to be a square frame, partition plates are vertically arranged in the square frame at intervals, and the partition plates divide the frame into a panel area I, a panel area II and a panel area III from left to right in sequence;
wherein, the first writing board is embedded in the first panel area and the second panel area respectively, the second writing board is arranged in front of the first writing board in a way of sliding up and down, slide rails are respectively arranged on one side of the square frame and one side of the partition plate corresponding to the two sides of the writing board II, two sides of the writing board II are respectively provided with a sliding block which is matched with the sliding rail, the sliding block is embedded into the sliding rail, a plurality of first grooves are respectively and longitudinally arranged on two sides of the back surface of the second writing board, adaptive spherical pieces are arranged in the first grooves, a cover plate is arranged at the opening of the first groove, a round hole with the diameter smaller than that of the spherical part is arranged in the middle of the cover plate, a first spring is arranged between the spherical part and the bottom end of the first groove, and under the action of no external force, the first spring naturally stretches and retracts, and one end of the first spring abuts against the spherical part, so that less than half of the volume of the spherical part extends out of the round hole; a plurality of arc-shaped grooves are longitudinally formed in the first writing board corresponding to the spherical part, and the part of the spherical part extending out of the round hole is clamped in the arc-shaped grooves;
an electronic white board is movably arranged in the panel area II, a projector is arranged at the upper edge of the panel area II, and the electronic white board is connected with the projector;
the fixing device comprises a connecting column, a second spring and a stud, the connecting column is bilaterally and symmetrically vertically arranged between the electronic whiteboard and the second upper edge of the panel area, the second spring is sleeved outside the connecting column and naturally stretches out and draws back under the state of no external force, and the stud is vertically arranged between the connecting column and the second lower edge of the electronic whiteboard and the second lower edge of the panel area;
the supporting device is a telescopic supporting leg arranged below two sides of the frame, and the bottom end of the supporting leg is provided with a universal wheel and a brake.
Preferably, the periphery of the electronic whiteboard is also provided with an outer frame, the electronic whiteboard is embedded into the outer frame, the upper edge of the outer frame is provided with a blind hole matched with the connecting column, and the upper edge of the second panel area corresponding to the blind hole is provided with a first through hole matched with the connecting column; and the lower edge of the outer frame is provided with a screw hole matched with the stud.
Preferably, the cross section of the arc-shaped groove is in an arc-shaped structure, and the radian of the arc-shaped structure is smaller than 1/2 of the circumference.
Preferably, the supporting leg contains guide arm and guide pin bushing, the one end of guide pin bushing is fixed in the below of frame both sides, the guide arm is certainly the guide pin bushing other end stretches into and can follow the guide pin bushing inner wall slides, the guide pin bushing with evenly set up a plurality of connecting holes that are linked together along vertical direction on the guide arm lateral wall, the connecting hole sets up the fixed pin of adaptation, the fixed pin peg graft in the through-hole.
Preferably, one side of the frame is provided with a placing rack, the placing rack is a shell with an opening at the front end, the front width and the rear width of the top surface of the shell are smaller than the front width and the rear width of the bottom surface of the shell, a partition board is transversely arranged in the shell, and the size of the partition board is matched with that of the top surface of the shell.
Preferably, the length and the width of the bottom surface of the placing frame are set to be 35-45cm and 20-30cm, and the vertical length from the partition plate to the bottom surface of the placing frame is set to be 40-50 cm.
Preferably, the connecting rods are arranged on the front edge of the top surface of the placing frame in a bilateral symmetry manner, the top surface of the placing frame corresponding to the first ends of the connecting rods is provided with a second groove, the first ends of the connecting rods are provided with rotating shafts, one ends of the rotating shafts are fixed on the inner rings of the bearings, and the bearings are fixed in the second grooves; the second end of the connecting rod is provided with a clamp capable of opening and closing.
Preferably, the middle part of the upper edge of the second panel area is provided with a support rod for fixing the projector, one end of the support rod is fixed at the upper edge of the second panel area, the other end of the support rod is vertically provided with a U-shaped frame, the middle part of the U-shaped frame is fixed at the other end of the support rod, and two ends of the U-shaped frame are respectively rotatably connected with two sides of the projector through rotating shafts, so that the projector and the U-shaped frame are rotatably connected.
The utility model discloses at least, include following beneficial effect:
the multimedia teaching demonstration device of the utility model is characterized in that a frame is divided into three areas, namely a panel area I, a panel area II and a panel area III, from left to right through a partition plate, wherein the panel area I and the panel area III are respectively embedded with a writing board I, a writing board II capable of sliding up and down is arranged in front of the writing board I, the panel area II is movably provided with an electronic white board so as to realize that the panel area I and the panel area II are used as writing areas, the electronic white board is used as a projection area of an electronic courseware, so that students in all directions can conveniently watch the electronic courseware, simultaneously, after the writing board II is used up, the writing board II can be pushed upwards to expose the writing board I at the rear part for writing, the writing board II can be pushed to a proper height according to requirements, and a spherical part can be clamped in an arc-shaped groove with a proper height to assist in fixing the writing board II, thereby being beneficial, when the writing board II is not used or the characters on the writing board II are cleaned, the spherical piece can be pushed by the first spring arranged at the bottom end of the pull-down spherical piece of the writing board II under the action of external force so as to be separated from the arc-shaped groove, the writing board II is pulled down, the spherical piece is clamped in the arc-shaped groove with the corresponding height to fix the writing board after being pulled down to a certain height, the change of the process can be smoothly realized and completed, the writing board II is pushed and pulled up and down, the contents on the writing board I, the writing board II and the electronic whiteboard can be displayed at the same time, students and teachers can conveniently comb the contents explained back and forth at a glance, and the writing board arranged in a vertically sliding mode not only increases the writing area, but also does not influence the display of the electronic courseware on the electronic; in addition, fixing device's setting can not only fix whiteboard still conveniently dismantles to do benefit to convenient to detach after the problem appears after using whiteboard for a long time and overhaul and change, and also can write after adjusting the height that suits to use this presentation device personnel through the supporting leg, also can carry out high fine setting with whiteboard in vertical direction, so that the student of different positions can clearly see whole contents on the whiteboard, especially the content that is located whiteboard below.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a multimedia teaching demonstration apparatus according to the present invention;
fig. 2 is a schematic structural view of the placing rack of the present invention;
fig. 3 is a schematic structural diagram of the connection relationship between the first groove and the spherical member of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1 and 3, the utility model provides a multimedia teaching presentation device, include:
the frame is arranged to be a square frame, partition plates 104 are vertically arranged in the square frame at intervals, and the partition plates 104 divide the frame into a panel area I100, a panel area II 101 and a panel area III 102 from left to right in sequence;
wherein, the first panel area 100 and the second panel area 101 are respectively embedded with a first writing board 105, a second writing board 106 is arranged in front of the first writing board 105 in a manner of sliding up and down, one side of the square frame and one side of the partition board 104 corresponding to the two sides of the second writing board 106 are respectively provided with a slide rail, the two sides of the second writing board 106 are respectively provided with a slide block 103 adapted to the slide rail, the slide block 103 is embedded in the slide rail, the two sides of the back of the second writing board 106 are respectively and longitudinally provided with a plurality of first grooves 116, the first grooves 116 are internally provided with adaptive spherical members 115, the opening of the first grooves 116 is provided with a cover plate, the middle part of the cover plate is provided with a round hole with a diameter smaller than that of the spherical members 115, a first spring 117 is arranged between the spherical members 115 and the bottom end of the first grooves 116, the first spring 117 naturally stretches and one end of the first spring 117 abuts against the spherical members 115 under the absence of external, such that less than half the volume of the ball 115 protrudes through the circular aperture; a plurality of arc-shaped grooves 107 are longitudinally arranged on the first wordpad 105 corresponding to the spherical part 115, and the part of the spherical part 115 extending out of the round hole is clamped in the arc-shaped grooves 107;
an electronic whiteboard is movably arranged in the panel area II 101, a projector 113 is arranged at the upper edge of the panel area II 101, and the electronic whiteboard is connected with the projector 113;
the fixing device comprises a connecting column 108, a second spring 109 and a stud 110, the connecting column 108 is bilaterally and symmetrically vertically arranged between the electronic whiteboard and the upper edge of the second panel area 101, the second spring 109 is sleeved outside the connecting column 108, the second spring 109 naturally stretches out and draws back in a state without external force, and the stud 110 is vertically arranged between the connecting column 108 and the lower edge of the electronic whiteboard and the second panel area 101;
the supporting device is a telescopic supporting leg 111 arranged below two sides of the frame, and the bottom end of the supporting leg 111 is provided with a universal wheel 112 and a brake.
In the scheme, the frame is divided into three areas, namely a panel area I100, a panel area II 101 and a panel area III 102 from left to right, the panel area I100 and the panel area III 102 are respectively embedded into a tablet I105, a tablet II 106 is arranged in front of the tablet I105, slide rails are respectively arranged on one side of the frame corresponding to the tablet II 106 and one side of a partition plate 104, and slide blocks 103 arranged on two sides of the tablet II 106 are respectively embedded into the slide rails, so that the tablet II 106 can slide up and down relative to the tablet I105, and the contents of the tablet I105 and the tablet II 106 can be conveniently displayed simultaneously; meanwhile, a plurality of first grooves 116 are longitudinally arranged on two sides of the back of the second tablet 106 respectively, an adaptive spherical piece 115 is arranged in the first grooves 116, first springs 117 are arranged at the bottom ends of the spherical piece 115 and the first grooves 116, the first springs 117 naturally extend and retract without external force, one end of each first spring 117 is fixed on the bottom surface of the first groove 116, the other end of each first spring 117 abuts against the spherical piece 115, and the spherical piece 115 can be prevented from being separated from the first grooves 116 due to the fact that the diameter of a circular hole in an opening cover plate of the first grooves 116 is smaller than that of the spherical piece 115; under the action of the first spring 117 without external force, the volume of the spherical element 115 is smaller than 1/2 and extends out of the round hole, which is convenient for the spherical element 115 to be used as a fastener, and the first writing board 105 corresponding to the spherical element 115 is provided with the arc-shaped slot 107, when the first tablet 105 and the second tablet 106 are superposed, the part of the spherical part 115 extending out of the circular hole is inserted into the corresponding arc-shaped slot 107, when the second tablet 106 is slid up and down, the ball-shaped member 115 is blocked in the arc-shaped slot 107 by the external force, then, the first spring 117 is pressed, the first spring 117 generates a reverse urging force so that the ball member 115 is pushed out of the arc-shaped groove 107, so that the ball member 115 is smoothly released from the arc-shaped groove 107, when the second tablet 106 slides to the topmost or a certain height, the ball 115 will be inserted into the arc-shaped slot 107 with a corresponding height, the second tablet 106 is fixed to help fix the second tablet 106 at a certain height.
An electronic whiteboard is movably arranged in the panel area II 101, the projector 113 is arranged at the upper edge of the panel area II 101, the projector 113 is connected with the electronic whiteboard, and then a notebook computer or a desktop computer is respectively connected with the projector 113 and the electronic whiteboard; in addition, connecting columns 108 are symmetrically arranged between the upper edge of the electronic whiteboard and the upper edge of the panel area II 101 in a left-right mode, second springs 109 are sleeved on the outer sides of the connecting columns 108, corresponding studs 110 are arranged between the lower edge of the panel area II 101 and the lower edge of the electronic whiteboard, the electronic whiteboard can be fixed through the connecting columns 108 and the studs 110, rigid collision of vibration in the vertical direction on the electronic whiteboard during installation and vertical adjustment of the supporting legs 111 can be prevented, a buffering effect can be achieved, the arrangement mode is relatively directly embedded into the panel area II 101, disassembly is more convenient, problems caused by long-term or high-frequency use of electronic equipment are inevitable, the electronic whiteboard can be conveniently disassembled for overhaul or replacement after problems occur, and convenience is provided for arrangement of desks and chairs according to a classroom and after a demonstration device is adjusted to a proper height through the supporting legs 111 according to a user, the electronic whiteboard can be finely adjusted in vertical height through the connecting column 108 and the stud 110, so that students in different positions can conveniently watch the content of the whole electronic whiteboard, and especially, students in the back row can conveniently watch the content below the electronic whiteboard. And the supporting leg 111 telescopic sets up can use according to the personnel of different heights, conveniently adjusts to suitable use height, and the setting up of universal wheel 112 and brake is conveniently removed and is fixed, changes the current fixed mounting means who sets up bulky multimedia apparatus, can remove and fix according to the demand in a flexible way.
The writing board can be flexibly combined with the electronic whiteboard to use by moving up and down, and the contents on the four writing boards and the electronic whiteboard can be displayed simultaneously, the range of the writing area is increased, the demonstration of the electronic whiteboard on the electronic courseware is not influenced, the taught contents can be conveniently combed by teachers and students front and back at a glance, the arrangement of knowledge points is convenient, in addition, the arrangement of the spherical part 115 and the arc-shaped slot 107 can also facilitate the stability of the second tablet 106 after the second tablet 106 slides to a certain height according to requirements, the writing range is expanded to facilitate the continuous use of the first writing board 105 for writing, the content display on the second writing board 106 and the electronic whiteboard is not influenced, two purposes are achieved at one time, meanwhile, the height of the demonstration device can be reasonably adjusted according to the height of a person using the demonstration device, so that the person can write at a comfortable use height.
In a preferable scheme, the periphery of the electronic whiteboard is further provided with an outer frame, the electronic whiteboard is embedded into the outer frame, the upper edge of the outer frame is provided with a blind hole matched with the connecting column 108, and the upper edge of the panel area II 101 corresponding to the blind hole is provided with a first through hole matched with the connecting column 108; the lower edge of the outer frame is provided with a screw hole matched with the stud 110.
In the scheme, the periphery of the electronic whiteboard is provided with an outer frame, the electronic whiteboard is embedded into the outer frame, the upper edge of the outer frame is provided with a blind hole matched with the connecting column 108, the upper edge of the corresponding panel area II 101 is provided with a first through hole, the connecting column 108 sequentially penetrates through the first through hole and the blind hole, the inner wall of the blind hole and the outer wall of the bottom end of the connecting column 108 are provided with matched threads, the other end of the connecting column 108 extends out of the first through hole, the edge of the end part of the connecting column 108 extending out of the first through hole is larger than the edge of the first through hole, so that the end part of the connecting column 108 is clamped on the first through hole, the electronic whiteboard and the frame are fixed, the damage to the electronic whiteboard caused by direct mounting on the electronic whiteboard can be prevented, meanwhile, the lower edge of the outer frame is provided with a screw hole matched with the screw bolt 110, the stability of whiteboard can be guaranteed.
In a preferred embodiment, the cross section of the arc-shaped slot 107 is arc-shaped, and the arc of the arc-shaped structure is smaller than 1/2 of the circumference.
In the above scheme, the cross section of the arc-shaped groove 107 is of an arc-shaped structure, the radian of the arc-shaped structure is smaller than 1/2 of the circumference, mainly matching with the part of the spherical part 115 extending out of the circular hole, and preventing the arc-shaped groove 107 from being too deep to facilitate the spherical part 115 to separate from the arc-shaped groove 107 and too shallow to achieve a good fixing effect.
In a preferred scheme, the supporting leg 111 comprises a guide rod and a guide sleeve, one end of the guide sleeve is fixed below two sides of the frame, the guide rod extends into the guide sleeve from the other end of the guide sleeve and can slide along the inner wall of the guide sleeve, a plurality of connecting holes communicated with each other are uniformly formed in the side wall of the guide sleeve and the side wall of the guide rod along the vertical direction, the connecting holes are provided with adaptive fixing pins, and the fixing pins are inserted into the through holes.
In the above scheme, supporting leg 111 contains guide arm and guide pin bushing, and the guide arm cover is located in the guide pin bushing, and can follow the guide pin bushing inner wall and slide from top to bottom, set up a plurality of connecting holes that are linked together along vertical direction on guide arm and guide pin bushing lateral wall simultaneously, the connecting hole sets up the fixed pin of adaptation, in order to make things convenient for according to the rising of the personnel who use the presentation device of this application, adjust supporting leg 111 to suitable height, then peg graft in the connecting hole of corresponding height through the fixed pin, the height that the locking was adjusted, guarantee holistic suitable height and stability.
As shown in fig. 2, in a preferred embodiment, a placing rack 114 is disposed on one side of the frame, the placing rack 114 is a casing with an opening at the front end, the front-back width of the top surface of the casing is smaller than the front-back width of the bottom surface of the casing, a partition plate 202 is transversely disposed in the casing, and the size of the partition plate 202 is matched with the size of the top surface of the casing.
In the above scheme, one side of frame sets up rack 114, mainly for placing notebook computer, teaching material and the water pen of writing etc. specifically sets up to: rack 114 sets up to front end open-ended casing, width around the top surface of the housing is less than width around the bottom surface of the housing, make the opening of casing present the inclined plane, and transversely set up baffle 202 in the casing, the size phase-match of baffle 202 size and top surface of the housing, setting up through baffle 202 divides into two-layer rack 114, the width on upper strata is less relatively, be used for preventing teaching material and the water pen of writing usefulness, the comparison width that sets up on lower floor, be for conveniently placing notebook computer, and the form on casing opening inclined plane, more do benefit to the placing and watching and operating of realizing notebook computer.
In a preferred embodiment, the length and width of the bottom surface of the rack 114 are set to 35-45cm and 20-30cm, and the vertical length from the partition plate 202 to the bottom surface of the rack 114 is set to 40-50 cm.
In the above scheme, the length and width of the bottom surface of the placement frame 114 and the vertical length from the partition plate 202 to the bottom surface of the placement frame 114 are set according to the size of a notebook computer used in a general office, so that the notebook computer can be conveniently placed on the bottom surface of the placement frame 114, and the notebook computer can be operated in a space.
As shown in fig. 2, in a preferred embodiment, the front edge of the top surface of the placing rack 114 is symmetrically provided with connecting rods 200, the top surface of the placing rack 114 corresponding to the first ends of the connecting rods 200 is provided with second grooves, the first ends of the connecting rods 200 are provided with rotating shafts, one end of each rotating shaft is fixed to an inner ring of a bearing, and the bearing is fixed in the second groove; the second end of the connecting rod 200 is provided with a clamp 201 which can be opened and closed.
In the above scheme, the connecting rods 200 are symmetrically arranged at the front edge of the top surface of the rack 114, the top surface of the rack 114 corresponding to the first end of the connecting rod 200 is provided with a second groove, the first end of the connecting rod 200 is provided with a rotating shaft, and the rotating shaft is fixed in the second groove through a bearing, so that the connecting rod 200 can be adjusted at different angles; the second end of connecting rod 200 sets up anchor clamps 201 that can open and shut, and the convenience is when in class, and the teacher cliies the teaching material from both sides with anchor clamps 201 through rotating connecting rod 200 for teaching material and rack 114 opening equidirectional tilting place in the top of rack 114, can also see the teaching material when conveniently operating the computer, liberate both hands, more do benefit to the operation computer.
In a preferable scheme, a supporting rod for fixing the projector 113 is arranged in the middle of the upper edge of the second panel area 101, one end of the supporting rod is fixed on the upper edge of the second panel area 101, a U-shaped frame is vertically arranged at the other end of the supporting rod, the middle of the U-shaped frame is fixed at the other end of the supporting rod, and two ends of the U-shaped frame are respectively rotatably connected to two sides of the position of the projector 113 through rotating shafts, so that the projector 113 is rotatably connected with the U-shaped frame.
In the above scheme, the support rod for fixing the projector 113 is arranged in the middle of the upper edge of the second panel area 101, one end of the support rod is fixed on the upper edge of the second panel area 101, the other end of the support rod is provided with the U-shaped frame, the middle of the U-shaped frame is fixed at the other end of the support rod, the two ends of the U-shaped frame are arranged downwards, the projector 113 and the U-shaped frame are rotatably connected through the rotating shaft, the angle of the projector 113 is conveniently adjusted according to the position of the electronic whiteboard during installation, and the electronic courseware to be displayed is projected onto the electronic whiteboard reasonably.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. A multimedia teaching presentation device, comprising:
the frame is arranged to be a square frame, partition plates are vertically arranged in the square frame at intervals, and the partition plates divide the frame into a panel area I, a panel area II and a panel area III from left to right in sequence;
wherein, the first writing board is embedded in the first panel area and the second panel area respectively, the second writing board is arranged in front of the first writing board in a way of sliding up and down, slide rails are respectively arranged on one side of the square frame and one side of the partition plate corresponding to the two sides of the writing board II, two sides of the writing board II are respectively provided with a sliding block which is matched with the sliding rail, the sliding block is embedded into the sliding rail, a plurality of first grooves are respectively and longitudinally arranged on two sides of the back surface of the second writing board, adaptive spherical pieces are arranged in the first grooves, a cover plate is arranged at the opening of the first groove, a round hole with the diameter smaller than that of the spherical part is arranged in the middle of the cover plate, a first spring is arranged between the spherical part and the bottom end of the first groove, and under the action of no external force, the first spring naturally stretches and retracts, and one end of the first spring abuts against the spherical part, so that less than half of the volume of the spherical part extends out of the round hole; a plurality of arc-shaped grooves are longitudinally formed in the first writing board corresponding to the spherical part, and the part of the spherical part extending out of the round hole is clamped in the arc-shaped grooves;
an electronic white board is movably arranged in the panel area II, a projector is arranged at the upper edge of the panel area II, and the electronic white board is connected with the projector;
the fixing device comprises a connecting column, a second spring and a stud, the connecting column is bilaterally and symmetrically vertically arranged between the electronic whiteboard and the second upper edge of the panel area, the second spring is sleeved outside the connecting column and naturally stretches out and draws back under the state of no external force, and the stud is vertically arranged between the connecting column and the second lower edge of the electronic whiteboard and the second lower edge of the panel area;
the supporting device is a telescopic supporting leg arranged below two sides of the frame, and the bottom end of the supporting leg is provided with a universal wheel and a brake.
2. The multimedia teaching presentation device according to claim 1, wherein an outer frame is further provided at the peripheral edge of the electronic whiteboard, the electronic whiteboard is embedded in the outer frame, a blind hole adapted to the connection column is provided at the upper edge of the outer frame, and a first through hole adapted to the connection column is provided at the upper edge of the second panel area corresponding to the blind hole; and the lower edge of the outer frame is provided with a screw hole matched with the stud.
3. The multimedia teaching presentation of claim 1 wherein the arcuate slot has an arcuate configuration in cross-section and the arc of the arcuate configuration is less than 1/2 of the circumference.
4. The multimedia teaching demonstration device according to claim 2, wherein the support leg comprises a guide rod and a guide sleeve, one end of the guide sleeve is fixed below two sides of the frame, the guide rod extends from the other end of the guide sleeve and can slide along the inner wall of the guide sleeve, a plurality of connecting holes which are communicated with each other are uniformly arranged on the side walls of the guide sleeve and the guide rod along the vertical direction, the connecting holes are provided with adaptive fixing pins, and the fixing pins are inserted into the first through holes.
5. The multimedia teaching presentation device of claim 1, wherein a placement frame is disposed on one side of the frame, the placement frame is configured as a shell with an opening at the front end, the front-back width of the top surface of the shell is smaller than the front-back width of the bottom surface of the shell, a partition board is transversely disposed in the shell, and the size of the partition board is matched with the size of the top surface of the shell.
6. The multimedia teaching presentation device of claim 5, wherein the shelf has a bottom surface that is configured to be 35-45cm by 20-30cm long and wide, and wherein the partition has a vertical length from the bottom surface of the shelf that is configured to be 40-50cm long.
7. The multimedia teaching demonstration device according to claim 5, wherein the front edge of the top surface of the rack is provided with connecting rods in bilateral symmetry, the top surface of the rack corresponding to the first ends of the connecting rods is provided with a second groove, the first ends of the connecting rods are provided with rotating shafts, one ends of the rotating shafts are fixed on the inner rings of the bearings, and the bearings are fixed in the second grooves; the second end of the connecting rod is provided with a clamp capable of opening and closing.
8. The multimedia teaching presentation device of claim 1, wherein a support rod for fixing the projector is disposed at the middle of the upper edge of the second panel area, one end of the support rod is fixed at the upper edge of the second panel area, the other end of the support rod is vertically disposed with a U-shaped frame, the middle of the U-shaped frame is fixed at the other end of the support rod, and the two ends of the U-shaped frame are respectively rotatably connected to the two sides of the projector through a rotating shaft, so that the projector and the U-shaped frame are rotatably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920077546.5U CN209993118U (en) | 2019-01-17 | 2019-01-17 | Multimedia teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920077546.5U CN209993118U (en) | 2019-01-17 | 2019-01-17 | Multimedia teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
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| CN209993118U true CN209993118U (en) | 2020-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920077546.5U Expired - Fee Related CN209993118U (en) | 2019-01-17 | 2019-01-17 | Multimedia teaching demonstration device |
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|---|---|
| CN (1) | CN209993118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111369837A (en) * | 2020-02-20 | 2020-07-03 | 河南工业职业技术学院 | Multifunctional display equipment for teaching of major for economic management |
| CN114274697A (en) * | 2022-01-10 | 2022-04-05 | 陈小雨 | Combined electronic whiteboard blackboard |
-
2019
- 2019-01-17 CN CN201920077546.5U patent/CN209993118U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111369837A (en) * | 2020-02-20 | 2020-07-03 | 河南工业职业技术学院 | Multifunctional display equipment for teaching of major for economic management |
| CN114274697A (en) * | 2022-01-10 | 2022-04-05 | 陈小雨 | Combined electronic whiteboard blackboard |
| CN114274697B (en) * | 2022-01-10 | 2023-10-27 | 河南平显科技有限公司 | Combined electronic whiteboard blackboard |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200124 Termination date: 20210117 |