A kind of multimedia device used of imparting knowledge to studentsTechnical field
The utility model relates to multimedia teaching field, is specially a kind of multimedia device used of imparting knowledge to students.
Background technology
Along with the progress of science and technology, multimedia teaching is used widely in various kinds of schools, and the text always used before instead of teacher, sound, picture are imparted knowledge to students; The develop rapidly of multimedia teaching, all there is multi-functional multimedia teaching apparatus, traditional device be the top of blackboard have need to be put down when projection cloth teacher uses allow after used by the ceiling projecting apparatus of ceiling, use very inconvenient, therefore design the multimedia device that a kind of novel teaching uses.
Utility model content
The purpose of this utility model is to provide a kind of multimedia device used of imparting knowledge to students, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of multimedia device used of imparting knowledge to students, its composition comprises: base, described base has supporting seat, upper surface and the supporting seat lower surface of described base have annular slot rolling, in described annular slot rolling, there is ball, described supporting seat has telescopic supporting rod, described telescopic supporting rod is connected with I-shaped bracket by cross regulating block, described I-shaped bracket right-hand member entablature is connected with U-shaped frame dovetail groove type, described I-shaped bracket left end is connected with flat board by rotating shaft, described U-shaped frame both sides are telescopic support struts, between described telescopic support struts, there is roller bearing, described roller bearing is wound with projection cloth, described projection cloth end magnetic absorption is in the magnetic strips of U-shaped frame bottom.
Preferably, the multimedia device that described teaching uses, described telescopic strut and telescopic supporting rod has rotary handle, the described telescopic supporting rod top button that has been threaded emits, described button emits and is connected with coiled pipe one end, the described coiled pipe other end is connected with magnifier, has universal wheel under described base, and described supporting seat is connected with telescopic supporting rod by internal thread projection.
Preferably, the multimedia device that described teaching uses, described supporting seat has groove, in described groove, there is electrostatic generator, having dust adsorption net outside described electrostatic generator, is clipboard before described flat board, is magnetic adhesive plaster plate after described flat board.
Compared with prior art, the beneficial effects of the utility model are: this multimedia device structure is simple, use is flexible, can reduce the labour intensity of teacher, improves the learning interest of student, and examine and replace original paper is convenient, district is write in setting and the very convenient teacher of projection in zone uses and classmate's study, under base, arrange universal wheel facilitates device to move, annular slot rolling is set between base and supporting seat simultaneously, in annular slot rolling, there is roller, flat board and projection cloth can be made to turn an angle facilitates classmates to watch, simultaneous retractable support bar has Telescopic, its height can be regulated, simultaneously at telescopic supporting rod top tool enlarging function, drive magnifier can to amplify the font on projection cloth and flat board by coiled pipe, the elongation degree simultaneously adopting U-shaped frame to stretch to adjust whole projection cloth fixed by magnetic strips firmly very convenient, flat board is connected by rotating shaft, upset can be carried out around the shaft use.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model supporting seat upper surface schematic diagram.
Fig. 3 is the utility model cross regulating block schematic diagram.
In figure: 1, universal wheel, 2, base, 3, supporting seat, 4, internal thread is protruding, 5, telescopic supporting rod, 6, dull and stereotyped, 7, rotating shaft, 8, I-shaped bracket, 9, cross regulating block, 10, button emits, 11, coiled pipe, 12, magnifier, 13, roller bearing, 14, U-shaped frame, 15, projection cloth, 16, magnetic strips, 17, rotary handle, 18, annular slot rolling, 19, ball, 20, electrostatic generator, 21, dust adsorption net, 22, groove.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of multimedia device used of imparting knowledge to students, its composition comprises: base 2, base 2 has supporting seat 3, upper surface and supporting seat 3 lower surface of base 2 have annular slot rolling 18, in annular slot rolling 18, there is ball 19, supporting seat 3 has telescopic supporting rod 5, telescopic supporting rod 5 is connected with I-shaped bracket 8 by cross regulating block 9, I-shaped bracket 8 right-hand member entablature is connected with U-shaped frame 14 dovetail groove type, I-shaped bracket 8 left end is connected with dull and stereotyped 6 by rotating shaft 7, U-shaped frame 14 both sides are telescopic support struts, there is between telescopic support struts roller bearing 13, roller bearing 13 is wound with projection cloth 15, projection cloth 15 end magnetic absorption is in the magnetic strips 16 of U-shaped frame bottom, telescopic strut and telescopic supporting rod 5 has rotary handle 17, the telescopic supporting rod 17 top button that has been threaded emits 10, button emits 10 to be connected with coiled pipe 11 one end, coiled pipe 11 other end is connected with magnifier 12, base has universal wheel 12 times, supporting seat 3 is connected with telescopic supporting rod 5 by internal thread protruding 4, supporting seat has groove 22, there is in groove 22 electrostatic generator 20, there is outside electrostatic generator 20 dust adsorption net 21, it is clipboard before flat board, it is magnetic adhesive plaster plate after flat board.
Principle of work: during use, the universal wheel 1 simultaneously under base 2 moves to assigned address, writes district and the very convenient teacher's use of projection in zone and classmate learn by setting, arranging universal wheel 1 for 2 times at base facilitates device to move, annular slot rolling 18 is set between base 2 and supporting seat 3 simultaneously, in annular slot rolling 18, there is roller 19, flat board 6 and projection cloth 15 can be made to turn an angle facilitates classmates to watch, simultaneous retractable support bar 5 has Telescopic, its height can be regulated, simultaneously at telescopic supporting rod top tool enlarging function, drive magnifier 12 can to amplify the font on projection cloth 15 and dull and stereotyped 6 by coiled pipe 11, adopt the elongation degree of the whole projection cloth 15 of the flexible adjustment of U-shaped frame 14 fixing firmly very convenient by magnetic strips 16 simultaneously, flat board is connected by rotating shaft, upset can be carried out around the shaft use, adsorbed by the 20 pairs of ambient dust of the electrostatic generator on supporting seat 3 in use simultaneously, by dust adsorption in dust adsorption net 21.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.