CN215411250U - Projection arrangement that classroom blackboard writing teaching was used - Google Patents
Projection arrangement that classroom blackboard writing teaching was used Download PDFInfo
- Publication number
- CN215411250U CN215411250U CN202121346194.2U CN202121346194U CN215411250U CN 215411250 U CN215411250 U CN 215411250U CN 202121346194 U CN202121346194 U CN 202121346194U CN 215411250 U CN215411250 U CN 215411250U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- protective housing
- protective shell
- sliding
- writing teaching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000013016 damping Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a projection device for classroom blackboard writing teaching, which comprises a mounting plate and a protective shell positioned on the lower side of the mounting plate, wherein a plurality of sliding grooves are formed in the mounting plate and the protective shell, a damping mechanism is arranged between each pair of sliding grooves, a plurality of limiting grooves are formed in the mounting plate and the protective shell, a fixing plate is arranged in the protective shell, two electric telescopic rods are fixedly connected to the protective shell, the output ends of the two electric telescopic rods are fixedly connected with the fixing plate together, a projector is arranged on the fixing plate, and telescopic mechanisms are arranged between the two ends of the fixing plate and the protective shell. The projector can be prevented from being damaged due to external force collision by arranging the protective shell and the damping mechanism; can accomodate the projecting apparatus when not using through telescopic machanism, avoid dust adhesion to influence the use.
Description
Technical Field
The utility model relates to the technical field of projection devices, in particular to a projection device for classroom blackboard writing teaching.
Background
The projector is also called a projector, is a device capable of projecting images or videos onto a curtain, can be connected with a computer, a VCD, a DVD, a BD, a game machine, a DV and the like through different interfaces to play corresponding video signals, and needs to use a projection device in classroom blackboard writing teaching.
The existing projector is installed on the top of a wall, and when the existing projector is collided by external force, the projector is damaged; the existing projector is exposed outside for a long time, dust is attached to the projector to influence the use of the projector, and therefore the projector device for classroom blackboard writing teaching is designed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a projection device for classroom blackboard writing teaching, which can avoid the damage of a projector due to external force collision by arranging a protective shell and a damping mechanism; can accomodate the projecting apparatus when not using through telescopic machanism, avoid dust adhesion to influence the use.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a projection arrangement that classroom blackboard writing teaching was used, includes the mounting panel and is located the protecting sheathing of mounting panel downside, all be equipped with a plurality of sliding trays on mounting panel and the protecting sheathing, it is every right all be equipped with damper between the sliding tray, all be equipped with a plurality of spacing grooves on mounting panel and the protecting sheathing, be equipped with the fixed plate in the protecting sheathing, two electric telescopic handle of fixedly connected with on the protecting sheathing, two electric telescopic handle's output common and fixed plate fixed connection, install the projecting apparatus on the fixed plate, all be equipped with telescopic machanism between the both ends of fixed plate and the protecting sheathing.
Preferably, damper is including being located two sliding tray and rather than sliding connection's slider, two the common fixedly connected with connecting rod of slider, two the slider respectively with rather than corresponding between the sliding tray a plurality of buffer spring of fixedly connected with, two the equal fixedly connected with fixed block in both ends of slider, four the fixed block respectively with rather than the inner wall sliding connection of the spacing groove that corresponds.
Through adopting above-mentioned technical scheme, can avoid the projecting apparatus to damage because of external force collision through setting up protecting sheathing and damper.
Preferably, telescopic machanism include with fixed plate fixed connection's rack plate, two mounts of protecting sheathing's two mounts of inner wall fixedly connected with, two rotate jointly between the mount and be connected with the rotary rod, fixedly connected with gear on the rotary rod, gear and rack plate meshing, fixedly connected with action wheel on the rotary rod, two connecting blocks of protecting sheathing's two connecting blocks of inner wall fixedly connected with, two rotate jointly between the connecting block and be connected with the dwang, fixedly connected with follows the driving wheel on the dwang, the action wheel overlaps jointly with the outer wall from the driving wheel and is equipped with the conveyer belt, fixedly connected with sealing door on the dwang.
Through adopting above-mentioned technical scheme, can accomodate the projecting apparatus through telescopic machanism when not using, avoid dust adhesion to influence the use.
Preferably, the rack plate is provided with a plurality of rack teeth which are matched with the gear.
Preferably, four threaded holes are formed in the mounting plate in a penetrating manner.
Through adopting above-mentioned technical scheme, can fix the mounting panel through the cooperation of bolt and screw hole.
Preferably, the connecting block is fixedly connected with the protective casing by welding.
Compared with the prior art, the utility model has the beneficial effects that:
1. the output of electric telescopic handle drives fixed plate and projecting apparatus downstream, can drive rack plate downstream at the fixed plate downstream in-process, makes the gear, the rotary rod, the action wheel, the conveyer belt, from the driving wheel, the dwang, sealing door rotate, can open protecting sheathing, the projecting apparatus of being convenient for stretches out, avoids the dust to fall the function that influences the projecting apparatus on the projecting apparatus through protecting sheathing's sealed setting.
2. When receiving external force and making protecting sheathing shake, make the slider slide in the sliding tray, make buffer spring compression or tensile, can cushion protection protecting sheathing through buffer spring's deformation, avoid the projecting apparatus internals in the protecting sheathing to damage because of vibrations, extension device's life.
In conclusion, the projector can be prevented from being damaged due to external force collision by arranging the protective shell and the damping mechanism; can accomodate the projecting apparatus when not using through telescopic machanism, avoid dust adhesion to influence the use.
Drawings
Fig. 1 is a cross-sectional view of a projection apparatus for teaching blackboard writing in classroom according to the present invention;
fig. 2 is a sectional view of a projector of the projection apparatus for classroom blackboard writing teaching according to the present invention when the projector is stored;
fig. 3 is a cross-sectional view of a projector of a projecting apparatus for teaching blackboard writing in classroom according to the present invention;
fig. 4 is a top view of a partial structure of a projection apparatus for teaching blackboard writing in classroom according to the present invention;
fig. 5 is a top view of a telescopic mechanism of a projection apparatus for teaching blackboard writing in classroom according to the present invention;
fig. 6 is a schematic view of a projection apparatus for classroom blackboard writing teaching according to the present invention.
In the figure: the device comprises a mounting plate 1, a protective shell 2, a sliding groove 3, a sliding block 4, a connecting rod 5, a buffer spring 6, a limiting groove 7, a fixing block 8, an electric telescopic rod 9, a fixing plate 10, a projector 11, a rack plate 12, a fixing frame 13, a rotating rod 14, a gear 15, a driving wheel 16, a conveying belt 17, a driven wheel 18, a connecting block 19, a rotating rod 20 and a sealing door 21.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-6, a projection device for classroom blackboard writing teaching comprises a mounting plate 1 and a protective casing 2 positioned at the lower side of the mounting plate 1, wherein four threaded holes are arranged on the mounting plate 1 in a penetrating way, the device can be fixed by matching bolts with threaded holes, a plurality of sliding grooves 3 are arranged on the mounting plate 1 and the protective shell 2, a shock absorption mechanism is arranged between each pair of sliding grooves 3, the shock absorption mechanism comprises sliding blocks 4 which are positioned in the two sliding grooves 3 and are in sliding connection with the sliding grooves, the two sliding blocks 4 are fixedly connected with a connecting rod 5 together, a plurality of buffer springs 6 are fixedly connected between the two sliding blocks 4 and the corresponding sliding grooves 3 respectively, fixed blocks 8 are fixedly connected at both ends of the two sliding blocks 4, and the four fixed blocks 8 are in sliding connection with the inner walls of the corresponding limiting grooves 7 respectively, the projector 11 can be prevented from being damaged by external collision by providing the protective case 2 and the shock-absorbing mechanism.
All be equipped with a plurality of spacing grooves 7 on mounting panel 1 and protecting sheathing 2, be equipped with fixed plate 10 in protecting sheathing 2, two electric telescopic handle 9 of fixedly connected with on protecting sheathing 2, two electric telescopic handle 9's output common and fixed plate 10 fixed connection, install projecting apparatus 11 on the fixed plate 10, all be equipped with telescopic machanism between the both ends of fixed plate 10 and protecting sheathing 2, can accomodate projecting apparatus 11 when not using through telescopic machanism, avoid the dust adhesion to influence the use.
The telescopic mechanism comprises a rack plate 12 fixedly connected with a fixed plate 10, a plurality of rack teeth matched with a gear 15 are arranged on the rack plate 12, two fixing frames 13 are fixedly connected with the inner wall of a protective shell 2, a rotary rod 14 is jointly and rotatably connected between the two fixing frames 13, the gear 15 is fixedly connected with the rotary rod 14, the gear 15 is meshed with the rack plate 12, a driving wheel 16 is fixedly connected with the rotary rod 14, two connecting blocks 19 are fixedly connected with the inner wall of the protective shell 2, the connecting blocks 19 are fixedly connected with the protective shell 2 through welding, a rotary rod 20 is jointly and rotatably connected between the two connecting blocks 19, a driven wheel 18 is fixedly connected with the rotary rod 20, a conveying belt 17 is sleeved on the outer walls of the driving wheel 16 and the driven wheel 18, a sealing door 21 is fixedly connected with the rotary rod 20, the sealing door 21 can be driven to rotate and open through the downward movement of a projector 11, and the sealing door 21 can be driven to rotate and close through the upward movement of the projector 11, the projector 11 is protected from being housed.
In the utility model, a worker firstly starts the electric telescopic rod 9, the output end of the electric telescopic rod 9 drives the fixing plate 10 and the projector 11 to move downwards, and the rack plate 12 is driven to move downwards in the downward movement process of the fixing plate 10, so that the gear 15, the rotating rod 14, the driving wheel 16, the conveying belt 17, the driven wheel 18, the rotating rod 20 and the sealing door 21 rotate, that is, the protective shell 2 can be opened, and the projector 11 can extend out conveniently; the electric telescopic rod 9 drives the fixing plate 10 and the projector 11 to move upwards, so that the sealing door 21 can be horizontally arranged, the protective shell 2 is sealed, and the dust is prevented from falling onto the projector 11 to influence the function of the projector 11 through the sealing arrangement of the protective shell 2; when receiving external force and making protecting sheathing 2 take place vibrations, make slider 4 slide in sliding tray 3, make buffer spring 6 compression or tensile, can cushion protection protecting sheathing 2 through buffer spring 6's deformation, avoid 11 internals of projecting apparatus in the protecting sheathing 2 to damage because of vibrations, extension means's life.
Claims (6)
1. The utility model provides a projection arrangement that classroom blackboard writing teaching was used, includes mounting panel (1) and protective housing (2) that is located mounting panel (1) downside, a serial communication port, all be equipped with a plurality of sliding tray (3) on mounting panel (1) and protective housing (2), it is every right all be equipped with damper between sliding tray (3), all be equipped with a plurality of spacing grooves (7) on mounting panel (1) and protective housing (2), be equipped with fixed plate (10) in protective housing (2), two electric telescopic handle (9) of fixedly connected with on protective housing (2), two electric telescopic handle (9)'s output common and fixed plate (10) fixed connection, install projecting apparatus (11) on fixed plate (10), all be equipped with telescopic machanism between the both ends of fixed plate (10) and protective housing (2).
2. The projecting device for the classroom blackboard-writing teaching according to claim 1, wherein the damping mechanism includes two sliding blocks (4) located in two sliding grooves (3) and slidably connected thereto, the two sliding blocks (4) are fixedly connected with a connecting rod (5) together, the two sliding blocks (4) are fixedly connected with a plurality of buffer springs (6) between the corresponding sliding grooves (3), two ends of the two sliding blocks (4) are fixedly connected with fixing blocks (8), and the four fixing blocks (8) are slidably connected with inner walls of corresponding limiting grooves (7) respectively.
3. The projecting apparatus that classroom blackboard writing teaching used according to claim 1, characterized in that, the telescopic machanism includes rack plate (12) with fixed plate (10) fixed connection, the inner wall fixedly connected with two mounts (13) of protecting sheathing (2), two the common rotation between mount (13) is connected with rotary rod (14), fixedly connected with gear (15) on rotary rod (14), gear (15) and rack plate (12) meshing, fixedly connected with action wheel (16) on rotary rod (14), the inner wall fixedly connected with two connecting blocks (19) of protecting sheathing (2), two the common rotation between connecting block (19) is connected with dwang (20), fixedly connected with follows driving wheel (18) on dwang (20), action wheel (16) and the outer wall cover from driving wheel (18) are equipped with conveyer belt (17), and a sealing door (21) is fixedly connected to the rotating rod (20).
4. A projector according to claim 3, characterised in that the rack plate (12) is provided with a plurality of rack teeth which cooperate with the gear (15).
5. The projection device for classroom blackboard-writing teaching as claimed in claim 1, wherein the mounting plate (1) has four threaded holes formed therethrough.
6. A projection device for classroom blackboard writing teaching as claimed in claim 3, wherein the connecting block (19) is fixedly connected to the protective housing (2) by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121346194.2U CN215411250U (en) | 2021-06-17 | 2021-06-17 | Projection arrangement that classroom blackboard writing teaching was used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121346194.2U CN215411250U (en) | 2021-06-17 | 2021-06-17 | Projection arrangement that classroom blackboard writing teaching was used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215411250U true CN215411250U (en) | 2022-01-04 |
Family
ID=79639666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121346194.2U Expired - Fee Related CN215411250U (en) | 2021-06-17 | 2021-06-17 | Projection arrangement that classroom blackboard writing teaching was used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215411250U (en) |
-
2021
- 2021-06-17 CN CN202121346194.2U patent/CN215411250U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20220104 |