CN203876436U - Projection and writing integrated self-cleaning blackboard - Google Patents
Projection and writing integrated self-cleaning blackboard Download PDFInfo
- Publication number
- CN203876436U CN203876436U CN201320732368.8U CN201320732368U CN203876436U CN 203876436 U CN203876436 U CN 203876436U CN 201320732368 U CN201320732368 U CN 201320732368U CN 203876436 U CN203876436 U CN 203876436U
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- China
- Prior art keywords
- blackboard
- projection
- blackboard eraser
- writing
- leading screw
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- Expired - Fee Related
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Abstract
The utility model relates to a projection and writing integrated self-cleaning blackboard. The projection and writing integrated self-cleaning blackboard mainly comprises a blind type curtain overturning structure, a linkage mechanism, a dead locking mechanism, and a blackboard eraser pressing dustproof mechanism. Through blind type curtain overturning, a projection function and a blackboard writing function are switched to each other, the linkage mechanism drives a blackboard eraser to wiping the blackboard in a transverse manner to synchronously finish cleaning work, and the dead locking mechanism is used for dead locking of any positions. The advantages are that the projection and writing integrated self-cleaning blackboard is easy to operate, is labor-saving and time-saving, is ingenious in structural design and low in cost, has multiple functions, etc. The blackboard enables projection and writing to be both achieved, meets teaching requirements under different situations, and is more user-friendly. Moreover, the blackboard is convenient to mount and is suitable for reconstruction of traditional classrooms.
Description
Technical field:
The utility model relates to field, especially writing of designed teaching occasion, projection and self-cleaning devices such as being applied to education and instruction and training.
Background technology:
The advantages such as traditional blackboard has very important effect aspect education, mainly contains cost low, and application is wide, easy for installation.But along with the further attention of people to education, the disadvantage of traditional teaching aid slowly highlights.Existing blackboard mainly comprises following shortcoming: function singleness, can only write; During erasing out handwriting, need manual erase, waste time and energy, efficiency is low; Projection with write separatedly, can not realize the ingenious conversion of writing with projection simultaneously.
Summary of the invention:
The utility model utilizes the upset of louvered curtain to realize the function conversion of projection and blackboard writing.Utilize four-bar linkage motion principle, by rack and pinion engagement, drive the upset of louvered curtain; Band transmission transferring power, rotates leading screw, drives blackboard eraser motion, has realized the erase feature of blackboard eraser.Gear and belt wheel are assemblied on power transmission shaft, with identical speed, rotate; Band transmission and lead screw transmission coordinate, and enlarging course has been realized erase feature in the upset of louvered curtain simultaneously, thereby solved technical problem of the prior art.
The utility model solves the scheme that its technical problem adopts: the integrated automatically cleaning blackboard of described projection writing comprises louvered curtain switching mechanism, and link gear is wiped in projection, and locking mechanism and blackboard eraser compress dustproof construction.Its feature is, the integrated automatically cleaning blackboard of described projection writing is realized the function of conversion projection and blackboard writing simultaneously, and linkage drives the horizontal wiping of blackboard eraser, thereby has completed simultaneously cleaning work.
By technique scheme, there is following effect in the utility model:
Described link gear, by rack and pinion engagement, band transmission, lead screw transmission, makes to wipe and the rotten synchronism of louvered curtain upset tool, time saving and energy saving.The upset of louvered curtain has realized freely switching of projection teaching and traditional instruction.In addition, can also be on projection courseware direct mark, met the teaching requirement under different situations, more humane.The situation of dust from flying in traditional wiping process has been avoided in the horizontal wiping of blackboard eraser.It is cleaner that the effect of striking off of rubber sheet removes blackboard eraser.Described locking mechanism, can meet at an arbitrary position locked of mechanism and loosen, and makes mechanical operation controlled, more stable.
Accompanying drawing explanation:
Fig. 1 is the power transmission arrangment sketch of this blackboard;
Fig. 2 is sheet compress device structure diagram;
Fig. 3 locking mechanism structure diagram;
Fig. 4 transmission mechanism structure diagram.
In above accompanying drawing: 1. upper end leading screw; 2. small pulley; 3. bearing; 4.V type band; 5. tooth bar; 6. large belt wheel; 7. handwheel; 8. rim brake; 9. the axis of guide; 10. felt fixed head; 11. blackboard eraser shells; 12. connecting bolts; 13. lower end leading screws; 14. curtain support bars; 15. louvered curtains; 16. frosted glass blackboard screens; 17. guide pads; 18. power transmission shafts; 19. feed screw nuts; 20. springs; 21. bolts; 22. screw rods; 23. flexible axles; 24. brake cables; 25. hollow bolts; 26. brake rubber block springs; 27. adjusting nuts; 28. packing rings; 29. brake rubber block fixed covers; 30. brake rubber blocks; 31. brake rubber block shells; 32. gears; 33. rim brake springs.
The specific embodiment:
Below in conjunction with the most preferred embodiment shown in accompanying drawing, be described in further detail.
Embodiment 1, and as shown in Figure 1,2,3, 4, the integrated automatically cleaning blackboard of described projection writing comprises louvered curtain switching mechanism, link gear, and locking mechanism, blackboard eraser compresses dust-proof mechanism.Louvered curtain switching mechanism is by curtain support bar 14, louvered curtain 15, and the axis of guide 9, guide pad 17 forms.Utilize four-bar linkage principle, make 15 upsets of louvered curtain; Linkage is mainly by handwheel 7, power transmission shaft 18, and large belt wheel 6, small pulley 2, V-type band 4, gear 32, tooth bar 5, upper end leading screw 1, lower end leading screw 13, feed screw nut 19 forms, and guarantees that 15 upsets of louvered curtain carry out with synchronizeing of blackboard eraser erasing move; Locking mechanism is by rim brake 8, brake cable 24, and hollow bolt 25, brake rubber block spring 26, rim brake spring 33, brake rubber block 30 compositions such as grade, locked by power transmission shaft 18, has guaranteed the stability of integrated model optional position.Blackboard eraser compresses dust-proof mechanism mainly by felt fixed head 10, blackboard eraser shell 11, and bolt 21, spring 20 forms.
Handwheel 7 is connected with power transmission shaft 18, on power transmission shaft 18, gear 32 and two large belt wheels 6 is installed successively simultaneously, and handwheel 7 rotates, drive large belt wheel 6 and gear 32 to rotate, gear 32 and tooth bar 5 engagements, tooth bar 5 is connected with curtain support bar 14 by the axis of guide 9, drives 15 upsets of louvered curtain.Feed screw nut 19 on blackboard eraser shell 11 coordinates with upper end leading screw 1 and lower end leading screw 13, and upper end leading screw 1 and lower end leading screw 13 left ends are installed small pulley 2, between small pulley 2 and large belt wheel 6, V-type band 4 is housed.Rotate handwheel 7, large belt wheel 6 drives small pulley 2 to rotate, and small pulley 2 drives upper end leading screw 1 and lower end leading screw 13 to rotate, and by upper end leading screw 1, lower end leading screw 13 coordinates with feed screw nut 19, drives blackboard eraser to carry out wiping.Nut upper end leading screw 1 is contrary with lower end leading screw 13 rotation directions, can guarantee blackboard eraser shell Shang Xia 11 speed identical, be not stuck.
Rim brake 8 is set on handwheel 7, between rim brake 8 outsides and handwheel 7, is provided with rim brake spring 33, the interior connection brake cable 24 of rim brake spring 33.Brake cable 24 passes flexible axle 23, connecting bolt 19, and brake rubber block 30 is fitted in brake rubber block fixed cover 29 inner sides, and brake rubber block shell 31 is coated on power transmission shaft 18, and fixes on the wall.On described bolt 19, cover has brake rubber block spring 26, and while holding rim brake 8 with a firm grip, brake cable 24 loosens, and rim brake spring 33 compresses, and brake rubber block spring 26 loosens, and brake rubber block 30 unclamps power transmission shaft 18, and now, power transmission shaft 18 is free to rotate; Hand leaves handwheel 7, loosens rim brake 8, and rim brake spring 33 loosens, and brake rubber block spring 26 compresses, brake cable 24 tensions, and brake rubber block 30 is coated on power transmission shaft 21, utilizes the frictional force of 30 pairs of power transmission shafts 18 of brake rubber block, realizes at an arbitrary position locked of mechanism.
In described blackboard eraser hold-down mechanism, spring 20, bolt 21 and screw rod 22 connect with felt fixed head 10, and spring 20 provides elastic force that felt fixed head 20 is pressed on frosted glass blackboard screen 16, effectively the writing on erasing blackboard.
Above-mentioned example is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present utility model and implement according to this; can not be with this protection domain of the present utility model; all equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (3)
1. the integrated automatically cleaning blackboard of projection writing, by louvered curtain switching mechanism, projection, wiping link gear, locking mechanism and blackboard eraser compression dustproof construction forms, it is characterized in that: described louvered switching mechanism, by louvered curtain and curtain support bar, forms movable device; Louvered curtain is installed the leading screw of horizontal positioned up and down, and leading screw left end is installed small pulley, by V, is with large belt wheel on power transmission shaft and is connected, and power transmission shaft left part is installed handwheel and rim brake, and right part has the cooperation of gear and tooth bar; Blackboard eraser shell is connected with feed screw nut; By manpower, rotate handwheel and provide power for whole blackboard.
2. the integrated automatically cleaning blackboard device of projection writing according to claim 1, is characterized in that: described blackboard eraser compresses dust-proof mechanism, and blackboard eraser drives blackboard eraser shell to wipe by leading screw.
3. the integrated automatically cleaning blackboard device of projection writing according to claim 1, is characterized in that: in described locking mechanism, rim brake is arranged on handwheel, and by brake rubber block, to power transmission shaft locking, realization is locked to mechanism kinematic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732368.8U CN203876436U (en) | 2013-11-20 | 2013-11-20 | Projection and writing integrated self-cleaning blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732368.8U CN203876436U (en) | 2013-11-20 | 2013-11-20 | Projection and writing integrated self-cleaning blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203876436U true CN203876436U (en) | 2014-10-15 |
Family
ID=51676973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320732368.8U Expired - Fee Related CN203876436U (en) | 2013-11-20 | 2013-11-20 | Projection and writing integrated self-cleaning blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203876436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130606A (en) * | 2018-08-27 | 2019-01-04 | 杨淞元 | A kind of figure displaying blackboard |
| CN113263856A (en) * | 2021-06-23 | 2021-08-17 | 江苏六鑫科教仪器设备有限公司 | Cleaning device for be used for teaching blackboard |
-
2013
- 2013-11-20 CN CN201320732368.8U patent/CN203876436U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130606A (en) * | 2018-08-27 | 2019-01-04 | 杨淞元 | A kind of figure displaying blackboard |
| CN109130606B (en) * | 2018-08-27 | 2024-05-17 | 杨淞元 | Graphic display blackboard |
| CN113263856A (en) * | 2021-06-23 | 2021-08-17 | 江苏六鑫科教仪器设备有限公司 | Cleaning device for be used for teaching blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20151120 |
|
| EXPY | Termination of patent right or utility model |