CN111538203A - Novel multimedia teaching for education device - Google Patents
Novel multimedia teaching for education device Download PDFInfo
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- CN111538203A CN111538203A CN202010346226.2A CN202010346226A CN111538203A CN 111538203 A CN111538203 A CN 111538203A CN 202010346226 A CN202010346226 A CN 202010346226A CN 111538203 A CN111538203 A CN 111538203A
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- 238000004804 winding Methods 0.000 claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 64
- 238000009434 installation Methods 0.000 claims abstract description 33
- 239000011241 protective layer Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000000295 complement effect Effects 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a novel multimedia teaching device for education, which comprises a classroom roof, a winding mechanism, a control box, an installation mechanism and an auxiliary mechanism, wherein the installation mechanism is fixed below the classroom roof, the winding mechanism is fixed below the installation mechanism and can move, the auxiliary mechanism is arranged behind the winding mechanism and can rotate, and the control box is fixed inside the winding mechanism. The installation mechanism is arranged below the roof of a classroom, so that the contact of students is prevented, the safety of equipment and the students is improved, the smoothness of the movement of the sliding block is ensured due to the arrangement of the folding protective layer in the installation mechanism, the folding and swinging effects of the projection curtain can be prevented due to the arrangement of the auxiliary mechanism in the use process, and the projection quality is improved.
Description
Technical Field
The invention relates to the technical field of multimedia teaching devices, in particular to a novel multimedia teaching device for education.
Background
Along with the progress of society, the multimedia teaching device has generally been present and has been given lessons in big, middle and primary schools, and the present projecting apparatus curtain that education was used is mostly fixed above the blackboard at present, can not the horizontal migration, and often hides the blackboard, and the projecting apparatus curtain easily is blown by wind, influences the teaching quality.
At present, chinese patent with publication number CN208985391U discloses a multimedia teaching device for education, which comprises a wall body, a first reciprocating linear motion device, a second reciprocating linear motion device, a rotating shaft, a clockwork spring, a projector screen, a screen protective cover, a driving shaft, a motor, a roller, a guard bar and a tension rope, wherein the first reciprocating linear motion device and the second reciprocating linear motion device are installed at one side of the wall body, and both the first reciprocating linear motion device and the second reciprocating linear motion device comprise a rack, a sliding rail, a U-shaped plate, a servo motor, a driving gear and a mounting plate, one side of the rack is fixedly connected with the wall body, but the second reciprocating linear motion device in the device is easy to fall ash and chalk dust, thereby affecting the horizontal movement of the projector screen.
The chinese patent with publication number CN207366926U discloses a novel multimedia teaching device for education, including a bottom tube, the internally mounted of a bottom tube has a top tube, the top of a bottom tube is installed and is pressed the claw, the nut is installed on the outer wall top of a bottom tube, nut and a bottom tube threaded connection, the inside top of nut is equipped with the inclined plane, the reel is installed to the bottom of couple, the zip fastener is installed on the right side of reel, the curtain is installed to the bottom of reel axle.
The two types of devices have a common disadvantage of poor safety, for example, the primary and secondary school students are relatively stubborn and have poor safety consciousness and strong curiosity, so that the first device is easily injured at the second reciprocating linear motion device, and the second device is easily knocked down to cause damage to the whole device.
Summary of the invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a novel multimedia teaching apparatus for education.
The invention realizes the purpose through the following technical scheme:
the utility model provides a novel multimedia teaching for education device, includes classroom roof, winding mechanism, control box, still includes installation mechanism and complementary unit, installation mechanism fixes classroom roof below, the installation mechanism below is fixed with mobilizable winding mechanism, the winding mechanism rear is provided with rotatablely complementary unit, winding mechanism internal fixation has the control box.
Preferably, installation mechanism includes mounting bracket, A-frame, guide post, slider, linear electric motor, folding inoxidizing coating, recess, all there is a plurality of at the front and back of mounting bracket through bolted connection the A-frame, the A-frame with the mounting bracket is all through bolted connection in classroom roof below, there are two inside bolted connection through the mounting bracket the guide post, guide post outside sliding connection have the slider with linear electric motor, the slider is provided with two, linear electric motor is located between the slider, the slider with linear electric motor below all through bolted connection have winding mechanism, there is folding inoxidizing coating winding mechanism both sides through screwed connection, the folding inoxidizing coating other end passes through screwed connection and is in on the mounting bracket inner wall.
Preferably, the mounting mechanism comprises a mounting frame, a triangular support, guide posts, a sliding block, a folding protective layer, a groove, a screw rod and a motor, wherein the triangular support is connected with a plurality of triangular supports at the front and rear parts of the mounting frame through bolts, the triangular support and the mounting frame are connected below the roof of a classroom through bolts, the guide posts are connected inside the mounting frame through bolts, the sliding block is connected outside the guide posts in a sliding manner, the screw rod is arranged between the guide posts, the screw rod penetrates through the sliding block and is in threaded connection with the sliding block, one end of the screw rod extends out of the mounting frame and is connected with the motor through a key, the motor is connected to one side of the mounting frame through bolts, the sliding block is provided with two guide posts, the winding mechanism is connected below the sliding block through bolts, and the folding protective layer is connected to the two sides, the other end of the folding protective layer is connected to the inner wall of the mounting frame through a screw.
Preferably, the groove is formed in the lower portion of the inner wall of the mounting frame, and the front edge and the rear edge of the folding protective layer are slidably connected to the inner side of the groove.
Preferably, winding mechanism includes winding drum, winding shaft, reduction gear, second motor, install bin, projection curtain, thermovent, winding drum passes through bolted connection and is in the slider below, winding drum is inside to be connected with through the bearing the winding shaft, winding shaft one end is stretched out winding drum, and stretch into inside the install bin, and with the reduction gear passes through the key-type connection, reduction gear one side is connected with through the key-type the second motor, the reduction gear with the second motor all is connected through bolted connection inside the install bin, the install bin passes through bolted connection in winding drum one side, winding shaft outside fixedly connected with the one end of projection curtain, the projection curtain other end is followed the bottom plate department of winding drum stretches out, winding drum below is provided with complementary unit.
Preferably, a plurality of strip-shaped heat dissipation ports are formed in the bottom plate of the installation box.
Preferably, a square opening is formed in the bottom plate of the winding drum, the lower end of the projection curtain penetrates through the square opening, and a cleaning brush is bonded on the inner side of the square opening.
Preferably, the auxiliary mechanism comprises a heavy rod, a fixed seat, a pin shaft, a telescopic rod and a connecting seat, the heavy rod is connected to the lower side edge of the projection screen cloth through a screw, the connecting seat is welded to the rear side of the heavy rod, the telescopic rod is connected to the upper side of the connecting seat in a rotating mode, the upper end of the telescopic rod is connected to the inner side of the fixed seat through the pin shaft, and the fixed seat is connected to the lower side of the winding drum through a bolt.
Preferably, the telescopic links are arranged in two and are arranged in a tandem and crossed manner.
Preferably, the control box has a function of receiving signals transmitted by an external remote controller.
Has the advantages that: installation mechanism sets up in classroom roof below, has prevented student's contact, has improved equipment and student's security, and the setting of folding inoxidizing coating has guaranteed the smoothness nature that the slider removed among the installation mechanism, and the setting of complementary unit can prevent the fold and the wobbling effect of appearance of projection curtain in the use, has improved projected quality, and the dust on the projection curtain can be cleaned in time to the setting of brush cleaner among the winding mechanism.
Additional features of the invention and advantages thereof will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a first schematic diagram of a novel educational multimedia teaching apparatus in accordance with the present invention;
FIG. 2 is a second schematic diagram of a novel educational multimedia teaching apparatus according to the present invention;
FIG. 3 is a front view of the novel educational multimedia teaching apparatus of the present invention;
FIG. 4 is a rear view of the novel educational multimedia teaching apparatus of the present invention;
FIG. 5 is a bottom view of the novel educational multimedia teaching apparatus of the present invention;
FIG. 6 is a sectional view A-A of a first embodiment of the novel educational multimedia teaching apparatus of the present invention;
FIG. 7 is an enlarged partial view of section I of a first embodiment of the novel educational multimedia teaching apparatus of the present invention;
fig. 8 is a sectional view a-a of a second embodiment of the novel educational multimedia teaching apparatus of the present invention.
The reference numerals are explained below:
1. a classroom roof; 2. an installation mechanism; 3. a winding mechanism; 4. an auxiliary mechanism; 5. a control box; 201. a mounting frame; 202. a triangular bracket; 203. a guide post; 204. a slider; 205. a linear motor; 206. folding the protective layer; 2011. a groove; 21. a lead screw; 22. a motor; 301. winding the roll; 302. a winding shaft; 303. a speed reducer; 304. a second motor; 305. installing a box; 306. a projection screen; 3051. a heat dissipation port; 401. a heavy bar; 402. a fixed seat; 403. a pin shaft; 404. a telescopic rod; 405. a connecting seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
As shown in fig. 1-7, a novel multimedia teaching device for education comprises a classroom roof 1, a rolling mechanism 3, a control box 5, a mounting mechanism 2 and an auxiliary mechanism 4, wherein the mounting mechanism 2 is fixed below the classroom roof 1, the movable rolling mechanism 3 is fixed below the mounting mechanism 2, the rotatable auxiliary mechanism 4 is arranged behind the rolling mechanism 3, the control box 5 is fixed inside the rolling mechanism 3, the mounting mechanism 2 comprises a mounting frame 201, a triangular bracket 202, guide posts 203, sliding blocks 204, linear motors 205, folding protective layers 206 and grooves 2011, the front and rear parts of the mounting frame 201 are connected with a plurality of triangular brackets 202 through bolts, the triangular bracket 202 and the mounting frame 201 are connected below the classroom roof 1 through bolts, the inside of the mounting frame 201 is connected with two guide posts 203 through bolts, the outer sides of the guide posts 203 are connected with the sliding blocks 204 and the linear motors 205 in a sliding manner, two sliding blocks 204 are arranged, the linear motor 205 is positioned between the sliding blocks 204, the lower parts of the sliding blocks 204 and the linear motor 205 are both connected with the winding mechanism 3 through bolts, two sides of the winding mechanism 3 are connected with folding protective layers 206 through bolts, the other end of each folding protective layer 206 is connected with the inner wall of the mounting frame 201 through bolts, the winding drum 301 can be driven by the linear motor 205 to move through the arrangement, the sliding blocks 204 have the function of fixing the winding drum 301, the guide posts 203 have the functions of fixing the sliding blocks 204 and the linear motor 205, the mounting frame 201 has the function of fixing the guide posts 203, the triangular support 202 fixes the mounting frame 201, a groove 2011 is formed below the inner wall of the mounting frame 201, the front edge and the rear edge of each folding protective layer 206 are connected to the inner side of the groove 2011 in a sliding mode, the arrangement can protect the guide posts 203 through the folding, the winding mechanism 3 comprises a winding drum 301, a winding shaft 302, a speed reducer 303, a second motor 304, a mounting box 305, a projection curtain 306 and a heat dissipation port 3051, wherein the winding drum 301 is connected below the sliding block 204 through a bolt, the winding drum 301 is connected with the winding shaft 302 through a bearing, one end of the winding shaft 302 extends out of the winding drum 301 and extends into the mounting box 305 and is connected with the speed reducer 303 through a key, one side of the speed reducer 303 is connected with the second motor 304 through a key, the speed reducer 303 and the second motor 304 are both connected inside the mounting box 305 through bolts, the mounting box 305 is connected on one side of the winding drum 301 through bolts, one end of the projection curtain 306 is fixedly connected outside the winding drum 302, the other end of the projection curtain 306 extends out of the bottom plate of the winding drum 301, an auxiliary mechanism 4 is arranged below the winding drum 301, and thus the gear inside the speed reducer 303 can be driven by, the reducer 303 drives the winding shaft 302 to rotate, so that the winding and unwinding functions of the projection curtain 306 are realized, a plurality of strip-shaped heat dissipation ports 3051 are formed in a bottom plate of the installation box 305, the arrangement can timely dissipate heat of the second motor 304, a square opening is formed in a bottom plate of the winding drum 301, the lower end of the projection curtain 306 penetrates through the square opening, a cleaning brush is bonded on the inner side of the square opening, the arrangement cleans the projection curtain 306 in the winding process, the auxiliary mechanism 4 comprises a heavy rod 401, a fixed seat 402, a pin shaft 403, a telescopic rod 404 and a connecting seat 405, the heavy rod 401 is connected to the lower side edge of the projection curtain 306 through screws, a connecting seat 405 is welded behind the heavy rod 401, the telescopic rod 404 is rotatably connected above the connecting seat 405, the upper end of the telescopic rod 404 is connected to the inner side of the fixed seat 402 through the pin shaft 403, the fixed seat 402 is connected to the lower side of the winding drum 301 through, realized preventing that fold and wobbling condition from appearing in projection curtain 306, improved the projection effect, telescopic link 404 is provided with two, and tandem cross arrangement, and control box 5 has the function of accepting the signal of external remote controller transmission, sets up like this and can control this equipment through external remote controller, has made things convenient for the operation.
In the structure, in the use, at first, control through external remote controller, make linear electric motor 205 start, linear electric motor 205 slides on guide post 203 and then drives take-up reel 301 and remove suitable position, then start second motor 304, second motor 304 makes the slow rotation of take-up shaft 302 through reduction gear 303, under the effect of heavy bar 401 gravity, make projection curtain 306 fall perpendicularly, because the decline of heavy bar 401, drive telescopic link 404 through connecting seat 405 and rotate and extend, the effect of preventing projection curtain 306 wobbling has been realized, the setting of heavy bar 401 has prevented projection curtain 306 the condition of fold from appearing, after using, through second motor 304 reversal, make projection curtain 306 rolled up on take-up reel 302, in the in-process of rolling, the dust on projection curtain 306 surface can be cleaned away to the cleaning brush.
Example 2
As shown in fig. 8, embodiment 2 differs from embodiment 1 in that: the mounting mechanism 2 comprises a mounting frame 201, triangular supports 202, guide posts 203, a sliding block 204, a folding protective layer 206, a groove 2011, a screw rod 21 and a motor 22, wherein the front and back parts of the mounting frame 201 are connected with a plurality of triangular supports 202 through bolts, the triangular supports 202 and the mounting frame 201 are connected below a classroom roof 1 through bolts, two guide posts 203 are connected inside the mounting frame 201 through bolts, the sliding block 204 is connected outside the guide posts 203 in a sliding manner, the screw rod 21 is arranged between the guide posts 203, the screw rod 21 penetrates through the sliding block 204 and is in threaded connection with the sliding block 204, one end of the screw rod 21 extends out of the mounting frame 201 and is connected with the motor 22 through a key, the motor 22 is connected to one side of the mounting frame 201 through bolts, two sliding blocks 204 are arranged, the lower part of the sliding block 204 is connected with a winding mechanism 3 through bolts, two sides of the winding, set up like this and to drive lead screw 21 through motor 22 and rotate, lead screw 21 drives slider 204 and removes, has realized the function that winding reel 301 removed, and slider 204 has the effect of fixed winding reel 301, and guide post 203 has the effect of fixed slider 204, and mounting bracket 201 has the effect of fixed guide post 203, the effect of the fixed mounting bracket 201 of A-frame 202.
In the structure, when in use, firstly, the external remote controller is used for controlling, so that the motor 22 is started, the motor 22 drives the screw 21 to rotate, the screw 21 drives the sliding block 204 to move, the sliding block 204 slides on the guide post 203 to drive the winding drum 301 to move to a proper position, then, the second motor 304 is started, the second motor 304 slowly rotates the take-up reel 302 through the speed reducer 303, the projection screen 306 is caused to fall vertically under the influence of the weight bar 401, and, due to the fall of the weight bar 401, the connecting seat 405 drives the telescopic rod 404 to rotate and extend, so that the function of preventing the projection curtain 306 from swinging is realized, the arrangement of the heavy rod 401 prevents the projection curtain 306 from wrinkling, and after the use, by reversing the second motor 304, the projection screen 306 is wound onto the take-up reel 302, during the rolling process, the cleaning brush will clean dust off the surface of the projection screen 306.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a novel multimedia teaching for education device, includes classroom roof (1), winding mechanism (3), control box (5), its characterized in that: still include installation mechanism (2) and complementary unit (4), installation mechanism (2) are fixed classroom roof (1) below, installation mechanism (2) below is fixed with mobilizable winding mechanism (3), winding mechanism (3) rear is provided with rotatablely complementary unit (4), winding mechanism (3) internal fixation has control box (5).
2. A novel multimedia teaching apparatus for education as claimed in claim 1, wherein: the installation mechanism (2) comprises an installation frame (201), triangular supports (202), guide posts (203), a sliding block (204), a linear motor (205), a folding protective layer (206) and a groove (2011), wherein the front and rear parts of the installation frame (201) are connected with a plurality of triangular supports (202) through bolts, the triangular supports (202) and the installation frame (201) are connected below the classroom roof (1) through bolts, the inside of the installation frame (201) is connected with two guide posts (203) through bolts, the outer sides of the guide posts (203) are connected with the sliding block (204) and the linear motor (205) in a sliding mode, the number of the sliding block (204) is two, the linear motor (205) is located between the sliding blocks (204), and the winding lower parts of the sliding block (204) and the linear motor (205) are connected with the mechanism (3) through bolts, the two sides of the winding mechanism (3) are connected with the folding protective layer (206) through screws, and the other end of the folding protective layer (206) is connected to the inner wall of the mounting frame (201) through screws.
3. A novel multimedia teaching apparatus for education as claimed in claim 1, wherein: the installation mechanism (2) comprises an installation frame (201), triangular supports (202), guide posts (203), a sliding block (204), a folding protective layer (206), a groove (2011), a lead screw (21) and a motor (22), wherein the front and rear parts of the installation frame (201) are connected with a plurality of triangular supports (202) through bolts, the triangular supports (202) and the installation frame (201) are connected below the classroom roof (1) through bolts, the inside of the installation frame (201) is connected with two guide posts (203) through bolts, the outer sides of the guide posts (203) are connected with the sliding block (204) in a sliding mode, the lead screw (21) is arranged between the guide posts (203), the lead screw (21) penetrates through the sliding block (204) and is in threaded connection with the sliding block (204), and one end of the lead screw (21) extends out of the installation frame (201), and have through the key-type connection motor (22), motor (22) pass through bolted connection and be in mounting bracket (201) one side, slider (204) are provided with two, slider (204) below all has through bolted connection winding mechanism (3), there is folding inoxidizing coating (206) winding mechanism (3) both sides through the screw connection, folding inoxidizing coating (206) other end passes through the screw connection and is in on mounting bracket (201) inner wall.
4. A novel multimedia teaching apparatus for education as claimed in claim 2 or 3, wherein: the groove (2011) is formed in the lower portion of the inner wall of the mounting frame (201), and the front edge and the rear edge of the folding protective layer (206) are connected to the inner side of the groove (2011) in a sliding mode.
5. A novel multimedia teaching apparatus for education as claimed in claim 2 or 3, wherein: the winding mechanism (3) comprises a winding drum (301), a winding shaft (302), a speed reducer (303), a second motor (304), an installation box (305), a projection curtain (306) and a heat dissipation port (3051), wherein the winding drum (301) is connected below the sliding block (204) through bolts, the winding shaft (302) is connected inside the winding drum (301) through a bearing, one end of the winding shaft (302) extends out of the winding drum (301) and extends into the installation box (305) and is connected with the speed reducer (303) through a key, one side of the speed reducer (303) is connected with the second motor (304) through a key, the speed reducer (303) and the second motor (304) are both connected inside the installation box (305) through bolts, the installation box (305) is connected to one side of the winding drum (301) through bolts, and one end of the projection curtain (306) is fixedly connected to the outer side of the winding drum (302), the other end of the projection curtain (306) extends out of the bottom plate of the winding drum (301), and the auxiliary mechanism (4) is arranged below the winding drum (301).
6. The novel multimedia teaching apparatus for education as claimed in claim 5, wherein: the bottom plate of the installation box (305) is provided with a plurality of strip-shaped heat dissipation ports (3051).
7. The novel multimedia teaching apparatus for education as claimed in claim 5, wherein: the bottom plate of the winding drum (301) is provided with a square opening, the lower end of the projection curtain (306) penetrates through the square opening, and a cleaning brush is bonded on the inner side of the square opening.
8. The novel multimedia teaching apparatus for education as claimed in claim 5, wherein: complementary unit (4) are including heavy pole (401), fixing base (402), round pin axle (403), telescopic link (404), connecting seat (405), heavy pole (401) are in through the screw connection on side under projection curtain (306), the welding of heavy pole (401) rear has connecting seat (405), connecting seat (405) top is rotated and is connected with telescopic link (404), telescopic link (404) upper end is passed through round pin axle (403) are connected fixing base (402) are inboard, fixing base (402) are in through bolted connection receive reel (301) below.
9. A novel multimedia teaching apparatus for education as claimed in claim 8, wherein: the telescopic rods (404) are arranged in a tandem and crossed mode.
10. A novel multimedia teaching apparatus for education as claimed in claim 1, wherein: the control box (5) has the function of receiving signals transmitted by an external remote controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346226.2A CN111538203A (en) | 2020-04-27 | 2020-04-27 | Novel multimedia teaching for education device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346226.2A CN111538203A (en) | 2020-04-27 | 2020-04-27 | Novel multimedia teaching for education device |
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| Publication Number | Publication Date |
|---|---|
| CN111538203A true CN111538203A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010346226.2A Pending CN111538203A (en) | 2020-04-27 | 2020-04-27 | Novel multimedia teaching for education device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111538203A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735201A (en) * | 2021-01-29 | 2021-04-30 | 南阳理工学院 | English electronic projection curtain winding and unwinding devices |
| CN113009766A (en) * | 2021-02-26 | 2021-06-22 | 徐少建 | Portable projection device capable of automatically accommodating and cleaning projection cloth |
| CN114660881A (en) * | 2022-03-28 | 2022-06-24 | 深圳市福佑铭信息技术有限公司 | Automatic retraction device for image projection screen |
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| CN204955831U (en) * | 2015-09-21 | 2016-01-13 | 四川文轩教育科技有限公司 | Plug -type clipboard with dustproof construction |
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Application publication date: 20200814 |