CN208969420U - A kind of multimedia teaching projection curtain device - Google Patents
A kind of multimedia teaching projection curtain device Download PDFInfo
- Publication number
- CN208969420U CN208969420U CN201821308256.9U CN201821308256U CN208969420U CN 208969420 U CN208969420 U CN 208969420U CN 201821308256 U CN201821308256 U CN 201821308256U CN 208969420 U CN208969420 U CN 208969420U
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- fixedly connected
- spring
- winding machine
- machine box
- electromagnet
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Abstract
The utility model discloses a kind of multimedia teaching projection curtain devices, including winding machine box, upper spring, lower spring and curtain, winding machine box is fixedly mounted on the wall of classroom, winding machine box inner cavity rolls and is connected with spool, suspender is provided in the middle part of spool, the notch of winding machine cassette bottom portion setting is run through on suspender bottom edge, suspender bottom edge is fixedly connected with spring, upper spring bottom edge is fixedly connected with curtain, curtain bottom edge is fixedly connected with lower spring, permanent magnet is provided in the middle part of the back side of upper spring and lower spring, the back side of permanent magnet is provided with oar song electromagnet, winding machine box two sides of the bottom are fixedly connected with fixed strip, fixed strip top is provided with supporting table, fixed strip lower part is provided with lower supporting table, winding machine box is internally provided with PLC controller, the remote controler and PLC controller pair being furnished with by this projection curtain device The folding and unfolding of curtain is controlled, and the bending of curtain is realized using the bending of upper spring and lower spring, easy to operate practical.
Description
Technical field
The utility model relates to Teaching Technology of Multimedia field, specifically a kind of multimedia teaching projection curtain device.
Background technique
Multimedia teaching refers in teaching process, the characteristics of according to instructional objective and teaching object, by Instructional Design,
Reasonably select and use Modern Teaching Medium, and with Traditional teaching means organic assembling, participate in whole course of teaching, jointly with a variety of
Media information acts on student, forms reasonable teaching process structure, the teaching efficiency for being optimal；Wherein modern teaching matchmaker
The projection screen that projector and projector projects picture that data are connected are carried out with computer that body refers mainly to；
It is plane curtain mostly after the projection screen expansion in classroom on the market now, due to reflective, in classroom side
The unclear projection screen of student viewing on teaching picture, not only teaching efficiency is bad, has an effect on the eye health of student；Cause
This, those skilled in the art provide a kind of multimedia teaching projection curtain device, to solve to propose in above-mentioned background technique
The problem of.
Summary of the invention
The purpose of this utility model is to provide a kind of multimedia teaching projection curtain devices, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides the following technical solutions:
A kind of multimedia teaching projection curtain device, including winding machine box, upper spring, lower spring and curtain, the volume
Receipts machine box is fixedly mounted on the wall of classroom, and the setting of winding machine cassette bottom portion is jagged, and winding machine box inner cavity rolls and is connected with spool,
The left end of winding machine box is fixedly installed with motor, and the output end of motor is fixedly connected with spool to be connect, on the right side of winding machine box inner cavity
It is provided with the U-shaped friction plate of opening upwards, U-shaped friction plate bottom interior wall is adapted to spool outer wall, and U-shaped friction plate upper end passes through bullet
Spring is fixedly connected with winding machine box inner wall, and U-shaped friction plate bottom is fixedly connected with iron block, the winding machine box inner wall immediately below iron block
It is fixedly installed with restraint electromagnet；Suspender is fixedly connected in the middle part of the spool, notch, suspender bottom are run through in suspender bottom edge
While being fixedly connected with spring, upper spring bottom edge is fixedly connected with curtain, and curtain bottom edge is fixedly connected with lower spring, and lower spring is right
End bottom is fixedly connected with brush；It is fixedly connected to permanent magnet in the middle part of the back side of the upper spring and lower spring, upper and lower two
The back side of a permanent magnet is connected with oar song electromagnet, and the oar song electromagnet back side is fixedly connected with bolt, and bolt has screwed spiral shell
Set, swivel nut are fixedly connected with fixing seat, and fixing seat is fixedly mounted on wall；Winding machine box two sides of the bottom are fixedly connected with
Fixed strip, fixed strip are bonded classroom wall, and two fixed strip tops of left and right are fixedly connected with supporting table, under two fixed strips
Portion is fixedly connected with lower supporting table, and the right side of the lower supporting table of right side fixed strip lower part setting is fixedly connected with brush plate；Institute
It states winding machine box and is internally provided with PLC controller.
As a further solution of the present invention: the suspender is elastic rubber moccasin.
The upper spring and lower spring are metal spring as a further solution of the present invention,.
The upper front end of the upper supporting table and lower supporting table is provided with tiltedly as a further solution of the present invention,
Rib.
The height, upper branch of curtain between the upper spring and lower spring as a further solution of the present invention,
It supports the spacing between platform and lower supporting table and the spacing three between upper and lower two oars song electromagnet is equal.
The PLC controller and motor, restraint electromagnet, oar song electromagnetism as a further solution of the present invention,
Iron, brush and brush plate are electrically connected, brush and brush plate movable contact, what PLC controller was furnished with this projection curtain device
The connection of Digiplex infrared remote control, the model FX1N of PLC controller.
The bent electricity of the motor, PLC controller, restraint electromagnet and oar as a further solution of the present invention,
Magnet is electrically connected by conducting wire and external power supply, and is in series with fuse and switch on the circuit respectively connected；It is described outer
The voltage of portion's power supply is 220 volts.
Compared with prior art, the utility model has the beneficial effects that
In structure rationally, the remote controler and PLC controller being furnished with by this projection curtain device are to curtain for the utility model
The folding and unfolding of cloth is controlled, and the bending of curtain is realized using the bending of upper spring and lower spring, easy to operate practical.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of multimedia teaching projection curtain device.
Fig. 2 is a kind of right view of multimedia teaching projection curtain device.
Fig. 3 is the cross-sectional view in a kind of multimedia teaching projection curtain device at B-B.
Fig. 4 is the enlarged drawing in a kind of multimedia teaching projection curtain device at A.
In figure: 1 winding machine box, 101 notches, 2 spools, 3PLC controller, 4 springs, 5U shape friction plate, 6 iron blocks, 7 restraints
Electromagnet, supporting table on 8,81 lower supporting tables, spring, 91 lower springs, 10 fixed strips, 11 suspenders, 12 curtains, 13 electricity on 9
Machine, 14 fixing seats, 15 brushes, 151 brush plates, 16 permanent magnets, 17 oar song electromagnet, 18 bolts, 19 swivel nuts.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1~4, in the utility model embodiment, a kind of multimedia teaching projection curtain device, including retracting
Machine box 1, upper spring 9, lower spring 91 and curtain 12, the winding machine box 1 are fixedly mounted on the wall of classroom, 1 bottom of winding machine box
Portion's setting jagged 101,1 inner cavity of winding machine box rolls and is connected with spool 2, and the left end of winding machine box 1 is fixedly installed with motor 13,
The output end of motor 13 is fixedly connected with spool 2, and the U shape friction plate 5, U of opening upwards is provided on the right side of 1 inner cavity of winding machine box
5 bottom interior wall of shape friction plate is adapted to 2 outer wall of spool, and 5 upper end of U-shaped friction plate connects by the way that spring 4 and 1 inner wall of winding machine box are fixed
It connects, 5 bottom of U-shaped friction plate is fixedly connected with iron block 6, and 1 inner wall of winding machine box immediately below iron block 6 is fixedly installed with restraint electricity
Magnet 7；Suspender 11 is fixedly connected in the middle part of the spool 2, notch 101 is run through on 11 bottom edge of suspender, and 11 bottom edge of suspender is solid
Surely it is connected with spring 9, upper 9 bottom edge of spring is fixedly connected with curtain 12, and 12 bottom edge of curtain is fixedly connected with lower spring 91, under
91 right end bottom of spring is fixedly connected with brush 15；It is fixedly connected to forever in the middle part of the back side of the upper spring 9 and lower spring 91
Magnet 16, the back side of two upper and lower permanent magnets 16 are connected with oar song electromagnet 17, and 17 back side of oar song electromagnet is fixed to be connected
It is connected to bolt 18, bolt 18 has screwed swivel nut 19, and swivel nut 19 is fixedly connected with fixing seat 14, and fixing seat 14 is fixedly mounted on wall
On；1 two sides of the bottom of winding machine box are fixedly connected with fixed strip 10, and fixed strip 10 is bonded classroom wall, and two of left and right are solid
Determine 10 top of item and be fixedly connected with supporting table 8, two 10 lower parts of fixed strip are fixedly connected with lower supporting table 81, right side fixed strip
The right side of the lower supporting table 81 of 10 lower parts setting is fixedly connected with brush plate 151；The winding machine box 1 is internally provided with PLC
Controller 3；
The suspender 11 is elastic rubber moccasin；
The upper spring 9 and lower spring 91 are metal spring, are bent after the stress of middle part, remove to spring back after power and straighten；
The upper front end of the upper supporting table 8 and lower supporting table 81 is provided with diagonal rib, transfers in upper spring 9 and lower spring 91
When play the role of guiding；
Between between the height of curtain 12 between the upper spring 9 and lower spring 91, upper supporting table 8 and lower supporting table 81
Away from and upper and lower two oar songs electromagnet 17 between spacing three it is equal so that when the decentralization expansion of curtain 12, upper spring 9 and under
The both ends of spring 91 are located in the upper supporting table 8 of the left and right sides and the front surface of lower supporting table 81, but also upper and lower two
A permanent magnet 16 is located at two upper and lower oar song electromagnet 17；
The PLC controller 3 and motor 13, restraint electromagnet 7,151 electricity of oar song electromagnet 17, brush 15 and brush plate
Property connection, 151 movable contact of brush 15 and brush plate, the model FX1N of PLC controller 3；Inside the winding machine box 1 also
It is provided with the hard contact being electrically connected with PLC controller 3, metal contact and 15 movable contact of brush, furls curtain in spool 2
Play the role of travel switch when 10；
The motor 13, PLC controller 3, restraint electromagnet 7 and oar song electromagnet 17 pass through conducting wire and external power supply electricity
Property connection, and be in series with fuse and switch on the circuit respectively connected；The voltage of the external power supply is 220 volts；
The PLC controller 3 is connect with the Digiplex infrared remote control that this projection curtain device is furnished with, Digiplex
It is equipped with and opens button and close button；The Digiplex be it is existing on the market, structure and principle are that this field is public
Know, no longer describes again.
The working principle of the utility model is:
The utility model relates to a kind of multimedia teaching projection curtain device, when the multimedia teaching of classroom, script curtain
12 on the spool in winding machine box 1, and spring 4 pulls U-shaped friction plate 5 and makes 2 outer wall of spool and 6 bottom of U-shaped friction plate
Portion's inner wall CONTACT WITH FRICTION limits the random rotation of spool 2, when teacher presses beating on the remote controler that this projection curtain device is furnished with
Button is opened, after PLC controller 3 receives the infrared signal of remote controler transmitting, PLC controller 3 can control the energization of restraint electromagnet 7
It generates magnetic attraction iron block 6 to move down, so that U-shaped friction plate 5 unclamps spool 2, while PLC controller 3 can control the energization of motor 13
It rotates forward, so that expansion is transferred in the slave winding machine box 1 of curtain 12 slowly, when 91 right end of lower spring of curtain 12 moves down into lower support
When at platform 81, brush 15 contacts connection with brush plate 151, and since the two and PLC controller 3 are electrically connected, PLC controller 3 is connect
After receiving the signal that the two is connected, motor 13 can be controlled and the power-off of restraint electromagnet 7 stops working, the meeting of U-shaped friction plate 5 and volume
2 CONTACT WITH FRICTION of axis limitation spool 2 tampers；Curtain 12 is also fully deployed at this time, and upper spring 9 and lower spring 91 are respectively across upper
In supporting table 8 and lower supporting table 81, PLC controller 3 can then control two upper and lower oar song electromagnet 17 and be powered on generation
Magnetism, the permanent magnet 16 in absorption in the middle part of spring 8 and lower 81 back side of spring, so that upper spring 9 and lower spring 91 are rearwardly bent,
Since suspender 11 is elastic rubber moccasin, will not influence spring be bent, and upper spring 9 and the bending of lower spring 91 will drive curtain
12 are also rearwardly bent, to realize the bending of curtain 12, facilitate the student viewing of two sides in teacher, teaching efficiency is more preferable；Together
When how much the bending degree of upper spring 9 and lower spring 91 to adjust can be set (i.e. by precession of the bolt 18 in swivel nut 19
The bending degree of curtain 12)；After the completion of teaching, teacher presses the closing on the Digiplex that this projection curtain device is furnished with
Button, PLC controller 3 first allow the power-off of oar song electromagnet 17 not work, and permanent magnet 16 is separated with oar song electromagnet 17, upper spring 9
It is straightened with the recovery of lower spring 91, curtain 12 also and then straightens, and then PLC controller 3 can control the reversion of motor 13 and restraint electromagnetism
7 energization excitation of iron, receives curtain 12 in winding machine box 1, after brush 15 is contacted with the hard contact inside winding machine box 1
Until curtain 12 is all wound up into spool 2；The utility model realizes curtain 12 by the bending of upper spring 9 and lower spring 91
Bending, it is easy to operate practical.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of multimedia teaching projection curtain device, which is characterized in that including winding machine box (1), upper spring (9), lower bullet
Item (91) and curtain (12), the winding machine box (1) are fixedly mounted on the wall of classroom, and winding machine box (1) bottom is provided with scarce
Mouth (101), winding machine box (1) inner cavity roll and are connected with spool (2), and the left end of winding machine box (1) is fixedly installed with motor (13),
The output end of motor (13) is fixedly connected with spool (2), and the U-shaped friction of opening upwards is provided on the right side of winding machine box (1) inner cavity
Plate (5), U-shaped friction plate (5) bottom interior wall are adapted to spool (2) outer wall, and U-shaped friction plate (5) upper end passes through spring (4) and retracting
Machine box (1) inner wall is fixedly connected, and U-shaped friction plate (5) bottom is fixedly connected with iron block (6), the winding machine box immediately below iron block (6)
(1) inner wall is fixedly installed with restraint electromagnet (7)；It is fixedly connected with suspender (11) in the middle part of the spool (2), suspender (11)
Notch (101) are run through on bottom edge, and suspender (11) bottom edge is fixedly connected with spring (9), and upper spring (9) bottom edge is fixedly connected with curtain
Cloth (12), curtain (12) bottom edge are fixedly connected with lower spring (91), and lower spring (91) right end bottom is fixedly connected with brush (15),
Permanent magnet (16) are fixedly connected in the middle part of the back side of the upper spring (9) and lower spring (91), two upper and lower permanent magnets
(16) the back side is connected with oar song electromagnet (17), and oar song electromagnet (17) back side is fixedly connected with bolt (18), bolt
(18) it has screwed swivel nut (19), swivel nut (19) is fixedly connected with fixing seat (14), and fixing seat (14) is fixedly mounted on wall；Institute
It states winding machine box (1) two sides of the bottom to be fixedly connected with fixed strip (10), fixed strip (10) is bonded classroom wall, and two of left and right are solid
Determine item (10) top to be fixedly connected with supporting table (8), two fixed strip (10) lower parts are fixedly connected with lower supporting table (81), right
The right side of the lower supporting table (81) of side fixed strip (10) lower part setting is fixedly connected with brush plate (151)；The winding machine box
(1) PLC controller (3) are internally provided with.
2. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the suspender
It (11) is elastic rubber moccasin.
3. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the upper spring
(9) and lower spring (91) is metal spring.
4. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the upper supporting table
(8) and the upper front end of lower supporting table (81) is provided with diagonal rib.
5. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the upper spring
(9) spacing between the height, upper supporting table (8) and lower supporting table (81) of the curtain (12) between lower spring (91) and on
Spacing three between lower two oar songs electromagnet (17) is equal.
6. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the PLC control
Device (3) and motor (13), restraint electromagnet (7), oar song electromagnet (17), brush (15) and brush plate (151) are electrically connected, electricity
(15) and brush plate (151) movable contact is brushed, PLC controller (3) and the Digiplex that this projection curtain device is furnished with are infrared
Remote control connection, the model FX1N of PLC controller (3).
7. a kind of multimedia teaching projection curtain device according to claim 1, which is characterized in that the motor
(13), PLC controller (3), restraint electromagnet (7) and oar song electromagnet (17) are electrically connected by conducting wire and external power supply,
And fuse and switch are in series on the circuit respectively connected；The voltage of the external power supply is 220 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308256.9U CN208969420U (en) | 2018-08-14 | 2018-08-14 | A kind of multimedia teaching projection curtain device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821308256.9U CN208969420U (en) | 2018-08-14 | 2018-08-14 | A kind of multimedia teaching projection curtain device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208969420U true CN208969420U (en) | 2019-06-11 |
Family
ID=66753005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821308256.9U Expired - Fee Related CN208969420U (en) | 2018-08-14 | 2018-08-14 | A kind of multimedia teaching projection curtain device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208969420U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666784A (en) * | 2021-01-14 | 2021-04-16 | 北京字节跳动网络技术有限公司 | Projection screen device |
| CN113674560A (en) * | 2021-08-26 | 2021-11-19 | 河北建材职业技术学院 | Multimedia teaching is with throwing screen device |
| CN114062747A (en) * | 2021-11-09 | 2022-02-18 | 康熹智能科技（东莞）有限公司 | Ammeter and anticreep device for ammeter with dampproofing theftproof function |
-
2018
- 2018-08-14 CN CN201821308256.9U patent/CN208969420U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112666784A (en) * | 2021-01-14 | 2021-04-16 | 北京字节跳动网络技术有限公司 | Projection screen device |
| CN113674560A (en) * | 2021-08-26 | 2021-11-19 | 河北建材职业技术学院 | Multimedia teaching is with throwing screen device |
| CN114062747A (en) * | 2021-11-09 | 2022-02-18 | 康熹智能科技（东莞）有限公司 | Ammeter and anticreep device for ammeter with dampproofing theftproof function |
| CN114062747B (en) * | 2021-11-09 | 2024-03-19 | 江阴众和电力仪表有限公司 | Ammeter with dampproofing theftproof function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20190611 Termination date: 20200814 |