CN203844474U - Display device combining chalkboard and projector - Google Patents
Display device combining chalkboard and projector Download PDFInfo
- Publication number
- CN203844474U CN203844474U CN201420201260.0U CN201420201260U CN203844474U CN 203844474 U CN203844474 U CN 203844474U CN 201420201260 U CN201420201260 U CN 201420201260U CN 203844474 U CN203844474 U CN 203844474U
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- China
- Prior art keywords
- gear
- gears
- plate face
- driving shaft
- blackboard
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- Expired - Fee Related
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Abstract
A display device combining a chalkboard and a projector comprises a frame. Two guide rails are arranged on the top and bottom of the frame respectively. The guide rails control an eraser to move side to side. The eraser is in sliding contact with at least two base boards which are connected with a driving shaft. First gears are arranged at two ends of the driving shaft. The driving shaft is fixed on a support plate. The first gears mesh with another set of first gears through second gears arranged on the support plate. Ratchets are disposed at two ends of the base boards. The base boards are driven to rotate in a same direction mainly by the second gears and the first gears. The first gears mesh with the second gears in the middle to achieve unidirectional rotation. When the base boards move to a predetermined position, a motor stops rotating; the ratchets jam the first gears, and the eraser on the back of the chalkboard moves back and forth through the guide rails so as to erase writings. The display device is automatically controlled, requires less manual operations, is simple to operate, and is widely applicable and highly practical.
Description
Technical field
The utility model belongs to teaching equipment technical field, is specifically related to a kind of exhibiting device combining with projecting apparatus based on blackboard.
Background technology
Existing classroom presentation device mainly contains blackboard and projecting apparatus, and the two function singleness can not show that course content is to meet teaching demand well.When the two use, in most cases separate, the use of projecting apparatus sometimes also affects the writing on the blackboard of blackboard.
Existing blackboard majority is the simple writing on the blackboard effect of writing, and part blackboard can be equipped with LCDs, but involves great expense, the inconvenient shortcoming of the high use of cost.And when general blackboard erasing out handwriting, mostly have dust, be unfavorable for classroom personnel's physical and mental health.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of exhibiting device combining with projecting apparatus based on blackboard,
To achieve these goals, the technical solution adopted in the utility model is: a kind of exhibiting device combining with projecting apparatus based on blackboard, include framework, framework is respectively provided with a guide rail up and down, guide rail control blackboard eraser moves left and right, blackboard eraser and the sliding-contact of the basic plate face of at least two groups, basic plate face is connected with driving shaft, both ends of main drive shaft is provided with gear one, driving shaft is fixed in gripper shoe, gear one is meshed with another group gear one by the gear two of gripper shoe, and basic plate face two ends are provided with ratchet, and gear two, gear one are connected with stepper motor.
Described basic plate face triangular prism layout structure.
Described ratchet stops the rotation of meshed gears two, gear one.
Described guide rail is electronic guide rail.
Compared with prior art, the presentation device of the comprehensive blackboard of the utility model and projector functions.Mainly formed by the basic plate face of regular triangular prism, the plate face of regular triangular prism passes through frame supported, the right and left is installed gear, motor driven gear is realized intermittent movement and is completed the different plate face of converting to of regular triangular prism plate face expection object, the object that the gear side of gripper shoe one side is equipped with sheave can fix the rotation of gear and reach steadying plate face.Blackboard eraser is realized and is moved back and forth erasing out handwriting by electronic guide rail.The movement of blackboard eraser can be adjusted plate face makes plate face more smooth, is conducive to write.
Basic plate face of the every conversion of plate face, moves automatic erasing out handwriting by blackboard eraser by guide rail.The time projectable that forwards fine flour to is used, and also can in projection, mark or directly write in the above.
The main transmission of the utility model realizes desired design object by gear and guide rail by driven by motor, has automatic control accessory system simultaneously, and the function of blackboard and projecting apparatus is integrated, and so that better display platform to be provided, meets modern teaching requirement; Reduce manual operation, easy to use.
Brief description of the drawings
Fig. 1 is structure schematic diagram of the present utility model.
Fig. 2 is the side direction structure chart at A place in the utility model Fig. 1.
Fig. 3 is the side direction structure chart at B place in the utility model Fig. 1.
Fig. 4 is the partial structurtes schematic diagram of the basic plate face of the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, a kind of exhibiting device combining with projecting apparatus based on blackboard, include framework 1, framework 1 is respectively provided with a guide rail 3 up and down, guide rail 3 is controlled blackboard eraser 2 and is moved left and right, blackboard eraser 2 and basic plate face 7 sliding-contacts of at least two groups, basic plate face 7 is connected with driving shaft 4, driving shaft 4 two ends are provided with gear 1, driving shaft 4 is fixed in gripper shoe 6, gear 1 is meshed with another group gear 1 by the gear 28 of gripper shoe 6, and basic plate face 7 two ends are provided with ratchet 10, and gear 28, gear 1 are connected with stepper motor.
Driving shaft 4, gear 1, gear 28 form transmission mechanism, and transmission mechanism is in gripper shoe 6 both sides, and the upset that realizes basic plate face 7 is switched; Wipe mechanism and drive blackboard eraser 2 erasing out handwriting that moves reciprocatingly by two upper and lower guide rails 3.
Gear 1, gear 28 connection of rotatings by axle 4 with both sides, realizing the basic plate face 7 of many groups overturns, increase the write area of plate face of the same area, basic plate face 7 is made up of two kinds of colors, two sides is the general color plate face for chalk-writing, and another side is the white plate face that uses or write with white board marker for projection.
Other axles of organizing in basic plate face are driven shaft 5.
Described ratchet 10 stops the rotation of meshed gears 28, gear 1.
Described guide rail 3 is electronic guide rail, is connected with stepper motor.
Described basic plate face 7 is realized basic plate face 7 rotating in same directions by driving shaft 4 and the driven shaft 5 of gripper shoe 6 inner bearings by a gear 28 and two gear one 9 engaged transmission, the mutual interference while having avoided 7 motions of basic plate face.Ratchet 10 stops the rotation of meshed gears 28, gear 1, after the motion of control panel face, at grade, ensures the stability of plate face simultaneously.
The back that described blackboard eraser 2 is located at presentation device drives reciprocating motion erasing out handwriting by electronic guide rail 3, when erasing out handwriting, can reduce well flying out of dust, avoid dust harzard health, flexible member is equipped with at blackboard eraser two ends, ensures that blackboard eraser can be well and plate face laminating erasing out handwriting.
Framework 1 and bracing frame 6 form the supporting construction of this equipment.Basic plate face 7 is made up of triangular prism, the color difference of three faces, and wherein the color on two sides is identical with the color of normal blackboard, and the color of another side is white.Blackboard eraser 2 is realized left and right by upper and lower electronic guide rail 3 and is moved back and forth.Blackboard eraser 2 can be close to the face turning of basic plate face 7 completely, thereby better wipes the writing of upset plate face later.
The transmission system of both sides is mainly made up of the bearing in gear 28, gear 1 and driving shaft 4, driven shaft 5 and gripper shoe as shown in Figure 2, thereby drives basic plate face 7 to move.Bearing can reduce the frictional force between axle rotation.The intermeshing rotating in same direction of realizing plate face of large pinion, avoids the interference between plate face.Gear one 9 one sides are equipped with ratchet 10, can control gear 28, the rotation of gear 1.
The course of work of the present utility model is as follows:
In the time that basic plate face 7 need to overturn, thereby electric machine rotation driven gear one 9 driven gears 28 and basic plate face 7 rotate, and control motor driven gear 1 at every turn and rotate 1/3rd circles, realize the once inside out of basic plate face 7.The blackboard eraser 2 that is parked in both sides after basic plate face 7 has overturn is realized and being moved back and forth by electronic guide rail 3, erasing out handwriting.After reciprocating motion completes, blackboard eraser 2 continues to move to bracing frame 6 both sides and stops, and affects the rotation of plate face while avoiding plate face motion next time.
The rotating in same direction that basic plate face is 7 is mainly realized by gear 28, gear 1, and two gears 1 are by having engaged rotating in same direction with middle gear 28.In the time that basic plate face 7 moves to precalculated position, motor stops operating, and ratchet 10 blocks gear one simultaneously, avoids the rotation of gear to affect the stationarity of writing in plate face front, and electronic guide rail 3 drives blackboard eraser 2 motion erasing out handwritings.
Claims (4)
1. the exhibiting device combining with projecting apparatus based on blackboard, it is characterized in that, include framework (1), framework (1) is respectively provided with a guide rail (3) up and down, guide rail (3) is controlled blackboard eraser (2) and is moved left and right, blackboard eraser (2) and at least two basic plate face of group (7) sliding-contacts, basic plate face (7) is connected with driving shaft (4), driving shaft (4) two ends are provided with gear one (9), driving shaft (4) is fixed in gripper shoe (6), gear one (9) is meshed with another group gear one (9) by the gear two (8) of gripper shoe (6), basic plate face (7) two ends are provided with ratchet (10), gear two (8), gear one (9) is connected with stepper motor.
2. a kind of exhibiting device combining with projecting apparatus based on blackboard according to claim 1, is characterized in that, basic plate face (7) triangular prism layout structure.
3. a kind of exhibiting device combining with projecting apparatus based on blackboard according to claim 1, is characterized in that, described ratchet (10) stops the rotation of meshed gears two (8), gear one (9).
4. a kind of exhibiting device combining with projecting apparatus based on blackboard according to claim 1, is characterized in that, described guide rail (3) is electronic guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201260.0U CN203844474U (en) | 2014-04-24 | 2014-04-24 | Display device combining chalkboard and projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420201260.0U CN203844474U (en) | 2014-04-24 | 2014-04-24 | Display device combining chalkboard and projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203844474U true CN203844474U (en) | 2014-09-24 |
Family
ID=51557530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420201260.0U Expired - Fee Related CN203844474U (en) | 2014-04-24 | 2014-04-24 | Display device combining chalkboard and projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203844474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105882238A (en) * | 2016-05-13 | 2016-08-24 | 安庆师范学院 | Teaching board equipped with projection curtain |
| CN106739675A (en) * | 2017-03-06 | 2017-05-31 | 台州职业技术学院 | A kind of blackboard for education |
-
2014
- 2014-04-24 CN CN201420201260.0U patent/CN203844474U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105882238A (en) * | 2016-05-13 | 2016-08-24 | 安庆师范学院 | Teaching board equipped with projection curtain |
| CN106739675A (en) * | 2017-03-06 | 2017-05-31 | 台州职业技术学院 | A kind of blackboard for education |
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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: 20140924 Termination date: 20150424 |
|
| EXPY | Termination of patent right or utility model |