CN205428255U - Portable multimedia teaching system - Google Patents
Portable multimedia teaching system Download PDFInfo
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- CN205428255U CN205428255U CN201521011366.5U CN201521011366U CN205428255U CN 205428255 U CN205428255 U CN 205428255U CN 201521011366 U CN201521011366 U CN 201521011366U CN 205428255 U CN205428255 U CN 205428255U
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- guide rail
- projection screen
- bearing
- projector
- actuating unit
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Abstract
The utility model relates to a portable multimedia teaching system, it includes computer (1), portable projection screen subsystem (2) and portable projecting apparatus subsystem (3), portable projection screen subsystem (2) are including projection screen (21), power unit A (22), guide rail A (23) and guide rail B (24), guide rail B (24) are for guide rail A (23) slope installation, power unit A (22) drive projection screen (21) and slide on guide rail A (23) and guide rail B (24), projecting apparatus (31) are rotatable in projecting apparatus subsystem (3) keeps just right with projection screen (21), and computer (1) is control connection power unit A (22), power unit B (32) and projecting apparatus (31) respectively. The utility model discloses make more writings on the blackboard of seeing that the student also can be clear when watching the multi -media, improve classroom teaching efficiency, the classmate that also enables simultaneously the classroom both sides has the better visual angle of watching when watching the multi -media.
Description
Technical field
This utility model relates to Teaching Technology of Multimedia field, particularly a kind of Mobile multimedia teaching system.
Background technology
Multimedia teaching is a kind of teaching method using multiple electronic instruction media and Traditional teaching means to combine, and because it has picture and text acoustic image the feature of cyclopentadienyl, and from the emotion of multi-angle mobilizing students, attention and interest, and can be widely used in campus teaching.
In teaching process, the centre of blackboard is to use most places, blackboard top and bottom are not frequently used due to the line-of-sight problems of the inconvenience write or student, and when using projector equipment, projection screen blackboard a to be blocked part, so cause the fewest, when written contents is more with regard to the smaller utilizable area of blackboard, it is impossible to complete for the content of courses is written on blackboard.This teaching means there is problems in that 1 in the implementation process of classroom, projection screen has sheltered from part blackboard, time when teacher's writing on the blackboard in order to allow the classmate of left and right can see writing on the blackboard clearly, needs risen by projection screen and close projector；When needs viewing teaching media, again projection screen declined and open projector；This process occupies limited time in classroom, have impact on teaching efficiency, reduces classroom teaching efficiency.2, when teacher is for writing on the blackboard, and after being retracted by projection screen, classmates can not watch teaching projection.3, it is limited due to projection screen size, and present classroom is the biggest, watch during multimedia very inconvenient for being sitting in the classmate of both sides, front row, classroom.
Utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, it is provided that a kind of Mobile multimedia teaching system.Projection screen and projector are arranged to packaged type by this system, cover cannot effectively use or time the viewing visual angle of projection screen is the best when blackboard is projected screen, adjustable projection screen makes it move to suitable angle from trend side, the effective usable floor area of blackboard is made to maximize, to realize the instructional function of blackboard, and ensure that classmates watch the optimum efficiency of black board teaching and multimedia teaching；When having only to projection screen aided education, quickly and easily projection screen can be adjusted back to original place again.
nullThe purpose of this utility model is achieved through the following technical solutions: a kind of Mobile multimedia teaching system，It includes computer、Removable projection screen subsystem and removable projector sub-system，Described removable projection screen subsystem includes projection screen、Actuating unit A、Guide rail A and guide rail B，Described actuating unit A、Guide rail A and guide rail B is each attached on wall，Guide rail A is parallel to blackboard and installs，Guide rail B is in the side of guide rail A，Guide rail B tilts to install relative to guide rail A，The two ends of projection screen are slidably arranged on guide rail A and guide rail B respectively，Projection screen is also connected with actuating unit A，Under the driving of actuating unit A, projection screen slides on guide rail A and guide rail B，Described removable projector sub-system includes projector and actuating unit B，Removable projector sub-system is fixing on the ceiling，Projector is fixed on the outfan of actuating unit B，Actuating unit B drives projector to rotate，Make projector the most right with projection screen，Described computer controls to connect actuating unit A respectively、Actuating unit B and projector.
Certain angle is set between guide rail B and guide rail A, projection screen can be made to shift to teach the side in classroom and rotate to an angle.So on the one hand, decrease projection screen blackboard is blocked so that blackboard utilizes area to maximize, it is simple to watch the content on teaching board content and projection screen simultaneously；On the other hand, projection screen rotates to an angle, it is simple to front row, classroom classmate has optimal viewing visual angle, guide rail B can be decided according to the actual requirements with guide rail A corner dimension when watching projection screen.While projection screen rotation, projector is also with rotating to an angle so that projector is the most right with projection screen, it is ensured that drop shadow effect.When moving in view of projection screen, classmates also can be allowed to see teaching projection clearly, projection screen translational speed can not be too fast, and speed can be controlled in below 10mm/s.
Preferably, described actuating unit A includes motor A, bearing A, synchronizing jugged belt wheel, synchronous cog belt and pedestal, described pedestal is fixed on wall, motor A and bearing A is each attached on pedestal, bearing A is arranged on the outfan of motor A, and synchronizing jugged belt wheel coordinates installation, synchronous cog belt cooperation to be arranged on synchronizing jugged belt wheel with bearing A, projection screen is fixedly connected on synchronous cog belt, and described computer controls to connect motor A.Pedestal uses HT150 cast sheet, and welds channel-section steel thereon, and the installed surface of milling channel-section steel after welding, to ensure the installation accuracy of bearing A.
Compared with traditional V belt translation, Chain conveyer, gear drive, in Synchronous Belt Drives, there are tooth, the wheel rim surface of synchronizing jugged belt wheel to be also equipped with corresponding teeth groove on the work surface of synchronous cog belt, rely on band and engage transmitting movement and power between belt wheel, fricton-tight, pretightning force is little, can guarantee that constant gear ratio, it is ensured that Synchronous Transmission, and simple in construction, low cost.Synchronous cog belt is generally with steel wire rope or glass cord as bearing bed (endless belt), neoprene or polyurethane are body, carry thin and light, its intensity is big, and percentage elongation is little, easy to use, transmission efficiency is high, in addition in this programme transmission process, intermediate attachment member is few, improves transmission efficiency further.In the design, transmission speed is low, by the weight of guide rail carrying projection screen, so synchronous cog belt load is extremely low, can directly select finished product.
Preferably, described guide rail A and guide rail B arranging roller, projection screen is connected with roller by Quick connection ring and universal hook.Guide rail can be selected for wood sliding door exclusive guideway, and roller uses the rubber roll that guide rail is supporting.Projection screen has certain rotational angle in moving process, therefore sprung parts selects universal hook, and is connected with the T-Ring of Quick connection ring with projection screen top.Quick connection ring and universal hook material are 304 rustless steels.
Preferably, described actuating unit B includes motor B, gear shaft A, gear shaft B, bearing B, bearing C, casing and axle bed, described projector is outside equipped with projector frame, projector frame uses hot rolled steel plate manufacture up and down, surrounding passes through Plate Welding, corner angle bar welds, gear shaft A is connected to the outfan of motor B, gear shaft B and gear shaft A engaged transmission, one end of gear shaft B is arranged on casing by bearing B, bearing (ball) cover A is set outside bearing B, bearing (ball) cover A is fixed on casing, the other end of gear shaft B is arranged on bearing (ball) cover B by bearing C, bearing (ball) cover B is fixed on casing, the outfan of gear shaft B is connected with projector frame by axle bed.Described casing is fixing on the ceiling, and for dust-proof, material uses HT150；Axle bed uses HT200 casting, radially gets through hole, is connected by the axle head of bolt with gear shaft B.Because bearing B and bearing C bears axial force and radial force simultaneously, therefore select angular contact ball bearing.
Preferably, described synchronous cog belt being provided with synchronous cog belt set, projection screen upper end is provided with hook, and projection screen is connected with synchronous cog belt set by hook.
Preferably, described Mobile multimedia teaching system also includes that remote controller, described computer include electric control gear, and electric control gear is for accepting the signal of remote controller and controlling actuating unit A, actuating unit B and projector.Motor A, motor B and projector, with 51 single-chip microcomputers as core, by the reception to infrared signal (remote controller) and travel switch signal etc., are controlled by electric control gear.
This utility model has the advantage that
1, projection screen and projector are arranged to packaged type by this utility model, during use, projection screen and projector rotational angle cooperate, classmates are made to be clearly visible that more writing on the blackboard multimedia also being able to of viewing simultaneously, reduce projection screen and the switching of black board teaching pattern, improve the teaching efficiency in classroom；Also can make the content of courses that the classmate of both sides, classroom can preferably watch on projection screen simultaneously.
2, system structure is simple, low cost, transmission efficiency are high: use Synchronous Belt Drives in removable projection screen subsystem, compared with traditional V belt translation, Chain conveyer, gear drive, rely on and engage transmitting movement and power between synchronous cog belt and synchronizing jugged belt wheel, fricton-tight, pretightning force is little, can guarantee that constant gear ratio, it is ensured that Synchronous Transmission, simple in construction, low cost；And synchronous cog belt is generally with steel wire rope or glass cord as bearing bed (endless belt), neoprene or polyurethane are body, carry thin and light, its intensity is big, and percentage elongation is little, easy to use, transmission efficiency is high, additionally, drive mechanism intermediate attachment member is few, improve transmission efficiency further.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model Mobile multimedia teaching system；
Fig. 2 is the front view of removable projection screen subsystem in this utility model；
Fig. 3 is the top view of removable projection screen subsystem in this utility model；
Fig. 4 is the partial sectional view of removable projector sub-system in this utility model；
Fig. 5 is the classroom planar structure schematic diagram of investigation in this utility model detailed description of the invention；
Structural representation when Fig. 6 is that in this utility model detailed description of the invention, projection screen is in diverse location；
nullIn figure: 1-computer，2-may move projection screen subsystem，21-projection screen，211-links up with，22-actuating unit A，221-motor A，222-bearing A，The synchronizing jugged belt wheel of 223-，224-synchronous cog belt，225-pedestal，226-synchronous cog belt set，23-guide rail A，24-guide rail B，25-roller，26-Quick connection ring，The universal hook of 27-，3-may move projector sub-system，31-projector，311-projector frame，32-actuating unit B，321-motor B，322-gear shaft A，323-gear shaft B，324-bearing B，325-bearing C，326-casing，327-axle bed，328-bearing (ball) cover A，329-bearing (ball) cover B，4-blackboard，5-dais，6-first row seat，7-door，The left wall of 8-，The right wall of 9-，The a-right wall distance away from blackboard，The width of b-door，The length of c-blackboard，The width of d-projection screen，The e-projector distance away from projection screen，The f-dais distance away from first row seat，G-projection screen is away from first row seat distances，The distance of h-left wall distance blackboard，The length in l-classroom，The width in m-classroom.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1 to 4, a kind of Mobile multimedia teaching system, it includes computer 1, removable projection screen subsystem 2, removable projector sub-system 3 and remote controller.
Described removable projection screen subsystem 2 includes projection screen 21, actuating unit A22, guide rail A23 and guide rail B24, described actuating unit A22, guide rail A23 and guide rail B24 are each attached on wall, guide rail A23 is parallel to blackboard 4 and installs, guide rail B24 is in the side of guide rail A23, guide rail B24 tilts to install relative to guide rail A23, arranging roller 25 on described guide rail A23 and guide rail B24, projection screen 21 is connected with roller 25 by Quick connection ring 26 and universal hook 27.Quick connection ring 26 and universal hook 27 material are 304 rustless steels.Projection screen 21 is also connected with actuating unit A22, and under the driving of actuating unit A22, projection screen 21 slides and rotates to an angle on guide rail A23 and guide rail B24.
Certain angle is set between guide rail B24 and guide rail A23, projection screen 21 can be made to shift to teach the side in classroom and rotate to an angle.So on the one hand, decrease projection screen 21 blocking blackboard 4 so that blackboard 4 utilizes area to maximize, it is simple to watch the content on teaching board content and projection screen 21 simultaneously；On the other hand, projection screen 21 rotates to an angle, it is simple to front row, classroom classmate has optimal viewing visual angle when watching projection screen 21.When moving in view of projection screen 21, classmates also can be allowed to see teaching projection clearly, projection screen 21 translational speed can not be too fast, and speed can be controlled in below 10mm/s.
For determining the position that projection screen 21 moves, having carried out gathering investigation to classroom design size between many, Fig. 5 is the classroom planar structure schematic diagram gathering investigation, and table 1 is classroom design size.The classroom that after wherein Room 5113 are use Mobile multimedia teaching system, effect is best.This detailed description of the invention determines the optimal shift position of projection screen 21 as a example by 5113 classrooms, in Fig. 6, dotted line is the optimal shift position of the size mapping gained projection screen 21 according to 5113 classrooms, show that according to reality mapping the angle of guide rail B24 and guide rail A23 is 11 °.
Table 1 classroom design size
As shown in Figures 2 and 3, described actuating unit A22 includes motor A221, bearing A222, synchronizing jugged belt wheel 223, synchronous cog belt 224 and pedestal 225, described pedestal 225 is fixed on wall, motor A221 and bearing A222 is each attached on pedestal 225, bearing A222 is arranged on the outfan of motor A221, synchronizing jugged belt wheel 223 coordinates installation with bearing A222, synchronous cog belt 224 cooperation is arranged on synchronizing jugged belt wheel 223, synchronous cog belt set 226 it is provided with on synchronous cog belt 224, projection screen 21 upper end is provided with hook 211, projection screen 21 is connected with synchronous cog belt set 226 by hook 211.Pedestal 225 uses HT150 cast sheet, and welds channel-section steel thereon, the installed surface of milling channel-section steel after welding, to ensure the installation accuracy of bearing A222.
As shown in Figure 4, described removable projector sub-system 3 includes projector 31 and actuating unit B32, and projector 31 is fixed on the outfan of actuating unit B32, and actuating unit B32 drives projector 31 to rotate so that projector 31 is the most right with projection screen 21.Removable projector sub-system 3 is fixed on the ceiling in classroom.
nullDescribed actuating unit B32 includes motor B321、Gear shaft A322、Gear shaft B323、Bearing B324、Bearing C325、Casing 326 and axle bed 327，Described projector 31 is outside equipped with projector frame 311，Described casing 326 is fixing on the ceiling，Gear shaft A322 is connected to the outfan of motor B321，Gear shaft B323 and gear shaft A322 engaged transmission，One end of gear shaft B323 is arranged on casing 326 by bearing B324，Bearing (ball) cover A328 is set outside bearing B324，Bearing (ball) cover A328 is fixed on casing 326，The other end of gear shaft B324 is arranged on bearing (ball) cover B329 by bearing C325，Bearing (ball) cover B329 is fixed on casing 326，The outfan of gear shaft B323 is connected with projector frame 311 by axle bed 327.Projector frame about 311 uses hot rolled steel plate manufacture, and surrounding passes through Plate Welding, and corner angle bar welds；Casing 326 is for dust-proof, and material uses HT150；Axle bed 327 uses HT200 to cast, and radially gets through hole, is connected by the axle head of bolt with gear shaft B323.Bearing B324 and bearing C325 is angular contact ball bearing.
Described computer 1 includes electric control gear, and electric control gear is for accepting the signal of remote controller and controlling motor A221, motor B321 and projector 31.
During specifically used this utility model, when needs watch blackboard 4 writing on the blackboard and projection screen 21 simultaneously, projection screen 21 can be moved to blackboard 4 side, reduce projection screen 21 blocking blackboard 4, make blackboard 4 utilize area to maximize, it is simple to watch the content on teaching board content and projection screen 21 simultaneously；When having only to watch the content on projection screen 21, projection screen 21 can be moved to the position parallel with blackboard 4.
Claims (6)
- null1. a Mobile multimedia teaching system，It is characterized in that: it includes computer (1)、Removable projection screen subsystem (2) and removable projector sub-system (3)，Described removable projection screen subsystem (2) includes projection screen (21)、Actuating unit A(22)、Guide rail A(23) and guide rail B(24)，Described actuating unit A(22)、Guide rail A(23) and guide rail B(24) be each attached on wall，Guide rail A(23) it is parallel to blackboard (4) installation，Guide rail B(24) at guide rail A(23) side，Guide rail B(24) relative to guide rail A(23) tilt to install，The two ends of projection screen (21) are slidably arranged in guide rail A(23 respectively) and guide rail B(24) on，Projection screen (21) also with actuating unit A(22) be connected，At actuating unit A(22) driving under projection screen (21) at guide rail A(23) and guide rail B(24) upper slide，Described removable projector sub-system (3) includes projector (31) and actuating unit B(32)，Projector (31) is fixed on actuating unit B(32) outfan，Actuating unit B(32) drive projector (31) to rotate，Make projector (31) the most right with projection screen (21)，Described computer (1) controls to connect actuating unit A(22 respectively)、Actuating unit B(32) and projector (31).
- nullA kind of Mobile multimedia teaching system the most according to claim 1，It is characterized in that: described actuating unit A(22) include motor A(221)、Bearing A(222)、Synchronizing jugged belt wheel (223)、Synchronous cog belt (224) and pedestal (225)，Described pedestal (225) is fixed on wall，Motor A(221) and bearing A(222) be each attached on pedestal (225)，Bearing A(222) be arranged on motor A(221) outfan，Synchronizing jugged belt wheel (223) and bearing A(222) coordinate installation，Synchronous cog belt (224) cooperation is arranged on synchronizing jugged belt wheel (223)，Projection screen (21) is fixedly connected on synchronous cog belt (224)，Described computer (1) controls to connect motor A(221).
- A kind of Mobile multimedia teaching system the most according to claim 1, it is characterized in that: described guide rail A(23) and guide rail B(24) on roller (25) is set, projection screen (21) is connected with roller (25) by Quick connection ring (26) and universal hook (27).
- nullA kind of Mobile multimedia teaching system the most according to claim 1，It is characterized in that: described actuating unit B(32) include motor B(321)、Gear shaft A(322)、Gear shaft B(323)、Bearing B(324)、Bearing C(325)、Casing (326) and axle bed (327)，Described projector (31) is outside equipped with projector frame (311)，Described casing (326) is fixed on wall，Gear shaft A(322) be connected to motor B(321) outfan，Gear shaft B(323) and gear shaft A(322) engaged transmission，Gear shaft B(323) one end by bearing B(324) be arranged on casing (326)，Bearing B(324) outside bearing (ball) cover A(328 is set)，Bearing (ball) cover A(328) it is fixed on casing (326)，Gear shaft B(324) the other end by bearing C(325) be arranged on bearing (ball) cover B(329) on，Bearing (ball) cover B(329) it is fixed on casing (326)，Gear shaft B(323) outfan be connected with projector frame (311) by axle bed (327).
- A kind of Mobile multimedia teaching system the most according to claim 2, it is characterized in that: on described synchronous cog belt (224), be provided with synchronous cog belt set (226), projection screen (21) upper end is provided with hook (211), and projection screen (21) is connected with synchronous cog belt set (226) by hook (211).
- 6. according to a kind of Mobile multimedia teaching system described in claim 1 ~ 5 any one, it is characterized in that: described Mobile multimedia teaching system also includes remote controller, described computer (1) includes electric control gear, and electric control gear is for accepting the signal of remote controller and control actuating unit A(22), actuating unit B(32) and projector (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011366.5U CN205428255U (en) | 2015-12-08 | 2015-12-08 | Portable multimedia teaching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521011366.5U CN205428255U (en) | 2015-12-08 | 2015-12-08 | Portable multimedia teaching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428255U true CN205428255U (en) | 2016-08-03 |
Family
ID=56515244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521011366.5U Withdrawn - After Issue CN205428255U (en) | 2015-12-08 | 2015-12-08 | Portable multimedia teaching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205428255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427681A (en) * | 2015-12-08 | 2016-03-23 | 成都大学 | Mobile multimedia teaching system |
-
2015
- 2015-12-08 CN CN201521011366.5U patent/CN205428255U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427681A (en) * | 2015-12-08 | 2016-03-23 | 成都大学 | Mobile multimedia teaching system |
| CN105427681B (en) * | 2015-12-08 | 2018-06-05 | 成都大学 | A kind of Mobile multimedia tutoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160803 Effective date of abandoning: 20180605 |