CN203920124U - Blackboard - Google Patents
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- Publication number
- CN203920124U CN203920124U CN201420247971.1U CN201420247971U CN203920124U CN 203920124 U CN203920124 U CN 203920124U CN 201420247971 U CN201420247971 U CN 201420247971U CN 203920124 U CN203920124 U CN 203920124U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- motor
- projection screen
- upset
- synchronous pulley
- 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
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- Overhead Projectors And Projection Screens (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
Utility model provides a kind ofly is characterized in that as writing panel and the blackboard using the blade upset after this writing panel as projection screen panel, comprising: blackboard framework, has outwardly and perpendicular to the front panel on ground; Two rotary units; Plurality of vanes, in blackboard framework between two rotary units; Motor, motor switch and transmission mechanism, wherein, rotary unit has: movable rod, a plurality of side link, and under the push-and-pull of movable rod drives, a plurality of side links are usingd respectively the some axle that is flexibly connected mutually with base connecting rod and as basic point, are carried out that forward and reverse upset is overlapping to be covered, thereby the corresponding upset of a plurality of side links, in plurality of vanes each blade opposing to two side surface part correspondingly outwardly upset, a side of each blade is black cloth, opposite side is projection screen cloth.A plurality of black cloths are for connecting into continuously blackboard background, and a plurality of projection screen cloths are for connecting into continuously projection screen panel.
Description
Technical field
The utility model relates to a kind of as writing panel and the blackboard using the blade upset after this writing panel as projection screen panel.
Background technology
In recent years, usining multimedia teaching facility that computer and projecting apparatus take as the leading factor has been widely used in each section's course teaching as a kind of advanced person's teaching means.Than traditional blackboard, in view of some drawbacks of multimedia teaching, traditional blackboard still cannot be substituted.And the subject matter that traditional blackboard exists is, when we use projecting apparatus, projection screen has occupied the area of blackboard greatly, and this has caused the utilization rate of blackboard not high.In small-sized classroom, projection screen has occupied nearly 95% blackboard area, and in large-scale classroom, projection screen will occupy the blackboard area of 40%-50% left and right, and its performed function of blackboard, will be lowered greatly.
But current blackboard can not be saved room and time by upset as projection screen using writing panel.
Utility model content
It is a kind of as writing panel and the blackboard using the blade upset after this writing panel as projection screen panel that the purpose of this utility model is to provide, and the utilization ratio of this blackboard is high, saving room and time.
The utility model provides a kind ofly is characterized in that as writing panel and the blackboard using the blade upset after this writing panel as projection screen panel, comprising: blackboard framework, has outwardly and perpendicular to the front panel on ground, two rotary units, lay respectively at front panel relatively to two frames inner side, plurality of vanes, in blackboard framework between two rotary units, motor, for driving the whole forward and reverse Rotate 180s ° of plurality of vanes, motor switch, is connected with motor, for switching on and off motor rotation, and transmission mechanism, be arranged between two rotary units and be connected with motor, thereby the rotary unit that is positioned at two ends for the power transmission of motor is given drives plurality of vanes to carry out corresponding rotation, wherein, front panel is transparent frosted acrylic board, be used for as writing panel, rotary unit has: the base connecting rod that the inner side of close front panel is fixed, parallel with base connecting rod and be transmitted the movable rod that mechanism drives push-and-pull, a side of plurality of vanes be connected to base connecting rod and movable rod between for a plurality of side links of corresponding installation blade one by one, under the push-and-pull of movable rod drives, a plurality of side links are usingd respectively the some axle being flexibly connected mutually with base connecting rod and are just being carried out as basic point, reverse flip is overlapping to be covered, thereby the corresponding upset of a plurality of side links, in plurality of vanes each blade opposing to two side surface part correspondingly outwardly upset, one side of each blade is black cloth, opposite side is projection screen cloth.A plurality of black cloths are for connecting into continuously blackboard background, and a plurality of projection screen cloths are for connecting into continuously projection screen panel.
What the utility model provided is a kind of as writing panel and the blackboard using the blade upset of this writing panel as projection screen panel, and it is also characterised in that: wherein, transmission mechanism, has: main shaft, be connected with base connecting rod, and be parallel to plurality of vanes; The first synchronous pulley, is connected with motor, for transmitting the power of motor; The second synchronous pulley, is connected with main shaft; Two traces, are connected with main shaft with movable rod respectively, for driving movable rod to carry out push-and-pull campaign; And Timing Belt, be connected respectively with the second synchronous pulley with the first synchronous pulley, be used for by the forward and reverse forward and reverse rotation that rotarily drives the second synchronous pulley of the first synchronous pulley, driven by motor the first synchronous pulley rotates, by Timing Belt, drive the second synchronous pulley to rotate, then drive with trace and make movable rod carry out push-and-pull campaign by main shaft.
The action effect of utility model
The blackboard related according to the utility model, when electrical power, by the transmission mechanism being connected respectively with movable rod with motor, drive movable rod to carry out sliding active, the a plurality of side links that make to be connected with base connecting rod with movable rod are respectively usingd respectively the some axle being flexibly connected mutually with base connecting rod and are carried out forward and reverse 180 ° of overlapping covering of upset as basic point, thereby the corresponding upset of a plurality of side links, in plurality of vanes each blade opposing to two side surface part correspondingly upset outwardly form projection screen panel.When motor power-off, plurality of vanes upset resets and rotates to form blackboard background.The blackboard the utility model proposes is to save space, time, efficiently blackboard.
Accompanying drawing explanation
Fig. 1 is the splicing status architecture schematic diagram of the utility model blackboard in an embodiment;
Structural representation when Fig. 2 is the upset of the utility model blackboard in an embodiment;
Fig. 3 is the top cross-sectional view of the utility model blackboard in an embodiment; And
Fig. 4 is the left view of the utility model blackboard in an embodiment.
The specific embodiment
Referring to accompanying drawing and embodiment, the related blackboard of the utility model is explained in detail.
Embodiment
Fig. 1 is the splicing status architecture schematic diagram of the utility model blackboard in an embodiment.
As shown in Figure 1, blackboard 100 in this example, this blackboard 100 can be as writing panel, and after the blade after 100 pairs of these clipboards of this blackboard overturns, as projection screen panel, blackboard 100 comprises blackboard framework 1, nine blades 3, motor 4, motor switch 6 and front panels 7.
Blackboard framework 1, is built by standard aluminium, has outwardly and perpendicular to the front panel 7 on ground,
Front panel 7 adopts transparent frosted acrylic board, as writing panel.
Nine blades 3, a wherein side surface part of each blade is black cloth, and opposite side face is projection screen cloth, and nine black cloths are for connecting into continuously respectively blackboard background, and nine projection screen cloths are for connecting into continuously respectively projection screen panel.Through actual verification, while doing the use of projection screen panel, the chalk writing having existed can not affect drop shadow effect.
Motor 4, is arranged at the interior right edge of blackboard framework 1, when energising, is used for driving the whole Rotate 180s ° of nine blades 3, is used for driving nine blades, 3 revert all spinning reductions when power-off.
Motor switch 6, is arranged at the right frame outside of blackboard framework 1 front panel 7, for switching on and off motor 4 rotations.
During as writing panel, open the power supply that motor switch 6 is connected motor 4, nine the whole Rotate 180s of blade 3 ° upsets form projection screen panel.
When projecting apparatus cuts out, again open motor switch 6, connect the power supply of motor 4,180 ° of nine blade 3 reverse flip rotate to form blackboard background.
Structural representation when Fig. 2 is the upset of the utility model blackboard in an embodiment.
As shown in Figure 2, the blackboard 100 in this example, also comprises two rotary units 2, lays respectively at the upper and lower frame inner side of front panel 7.
Transmission mechanism 5, is arranged between two rotary units 2 and is connected with motor 4, thereby for driving nine blades 3 to carry out corresponding rotation to the rotary unit 2 that is positioned at two ends the power transmission of motor 4.
Fig. 3 is the top cross-sectional view of the utility model blackboard in an embodiment.
Because the structure of two rotary units 2 is symmetrical, therefore following description of omitting the rotary unit 2 of upper ledge inner side, is only described the structure of the rotary unit 2 of lower frame inner side.
As shown in Figure 3, blackboard 100 in this example, wherein, the base connecting rod 21 that the inner side that rotary unit 2 has close front panel 7 is fixed, with base connecting rod 21 parallel the movable rod 22 that is transmitted mechanism 5 and drives push-and-pulls, a side of nine blades 3 be connected to base connecting rod 21 and movable rod 22 between for corresponding nine side links 23 that nine blades 3 are installed one by one.
Under the push-and-pull of movable rod 22 drives, nine side links 23 are usingd respectively the some axle that is flexibly connected mutually with base connecting rod 21 and as basic point, are carried out that forward and reverse upset is overlapping to be covered.
Transmission mechanism 5 has with base connecting rod and is connected, the main shaft 51 that is parallel to nine blades 3, the first synchronous pulley 52 being connected with motor 4, with center by main shaft 51 through and with relatively-stationary the second synchronous pulley 53 of main shaft 51, two traces 54 that are connected with the two ends of movable rod 22 and main shaft 51 respectively and the Timing Belt 55 being connected respectively with the second synchronous pulley 53 with the first synchronous pulley 52.
Motor 4 drives the first synchronous pulley 52 to rotate, and drives the second synchronous pulley 53 to rotate drive main shaft 51 to make coupled trace 54 drive movable rod 22 to carry out push-and-pull campaign again by Timing Belt 55.
Fig. 4 is the left view of the utility model blackboard in an embodiment.
As shown in Figure 4, motor 4 is fixed on the centre position, frame right side below of blackboard framework 1.
In conjunction with Fig. 1 and Fig. 2, nine blades 3 in Fig. 1 connect into another side through the upset of Fig. 2.
The effect of embodiment and effect
The blackboard related according to the utility model, when electrical power, by the transmission mechanism being connected respectively with movable rod with motor, drive movable rod to carry out sliding active, nine side links that make to be connected with base connecting rod with movable rod are respectively usingd respectively the some axle being flexibly connected mutually with base connecting rod and are carried out forward and reverse 180 ° of overlapping covering of upset as basic point, thereby nine corresponding upsets of side link, in nine blades each blade opposing to two side surface part correspondingly upset outwardly form projection screen panel.When motor is switched on again, nine blade reverse flip rotate to form backboard background.
By being arranged on the motor switch in the lower frame left side of blackboard framework front panel, switch on and off the power supply of motor.
The blackboard related according to the utility model, driven by motor the first synchronous pulley rotates, and drives the second synchronous pulley to rotate drive main shaft to make coupled trace drive movable rod to carry out push-and-pull campaign again by Timing Belt.The blackboard the utility model proposes is can be using a kind of saving space, the time of using as projection screen after clipboard upset, efficiently blackboard.
Above-mentioned embodiment is preferred case of the present utility model, is not used for limiting protection domain of the present utility model.
Claims (2)
1. a blackboard, as writing panel with using the blade upset after this writing panel as projection screen panel, is characterized in that, comprising:
Blackboard framework, has outwardly and perpendicular to the described front panel on ground;
Two rotary units, lay respectively at described front panel relatively to two frames inner side;
A plurality of described blades, in described blackboard framework between two described rotary units;
Motor, for driving the whole forward and reverse Rotate 180s ° of described plurality of vanes;
Motor switch, is connected with described motor, for switching on and off described motor rotation; And
Transmission mechanism, is arranged between two described rotary units and is connected with described motor, thereby for driving described plurality of vanes to carry out corresponding rotation to the described rotary unit that is positioned at two ends the power transmission of described motor,
Wherein, described front panel is transparent frosted acrylic board, for as clipboard,
Described rotary unit has: the base connecting rod being fixed near the inner side of described front panel, with described base connecting rod parallel by described transmission mechanism drive push-and-pull movable rod, a side of described plurality of vanes be connected to described base connecting rod and described movable rod between for corresponding a plurality of side links that described blade is installed one by one
Under the push-and-pull of described movable rod drives, a plurality of side links are usingd respectively the some axle that is flexibly connected mutually with described base connecting rod and as basic point, are carried out that forward and reverse upset is overlapping to be covered, thereby the corresponding upset of described a plurality of side link, in described plurality of vanes described in each blade opposing to the correspondingly upset outwardly of two side surface part
Described in each, a wherein side surface part of blade is black cloth, and opposite side face is projection screen cloth, and a plurality of described black cloths are for connecting into continuously blackboard background, and a plurality of described projection screen cloths are for connecting into continuously projection screen panel.
2. blackboard according to claim 1, is characterized in that:
Wherein, described transmission mechanism, has:
Main shaft, is connected with described base connecting rod, is parallel to described plurality of vanes;
The first synchronous pulley, is connected with described motor, for transmitting the power of described motor;
The second synchronous pulley, is connected with described main shaft;
Two traces, are connected with described main shaft with described movable rod respectively, for driving described movable rod to carry out push-and-pull campaign; And
Timing Belt, is connected respectively with the second synchronous pulley with described the first synchronous pulley, for by the forward and reverse forward and reverse rotation that rotarily drives described the second synchronous pulley of described the first synchronous pulley,
Described in described driven by motor, the first synchronous pulley rotates, and by Timing Belt, drives described the second synchronous pulley to rotate, then is driven with described trace and made described movable rod carry out push-and-pull campaign by described main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247971.1U CN203920124U (en) | 2014-05-15 | 2014-05-15 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420247971.1U CN203920124U (en) | 2014-05-15 | 2014-05-15 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203920124U true CN203920124U (en) | 2014-11-05 |
Family
ID=51815992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420247971.1U Expired - Fee Related CN203920124U (en) | 2014-05-15 | 2014-05-15 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203920124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949040A (en) * | 2019-12-09 | 2020-04-03 | 芜湖应天光电科技有限责任公司 | Full-automatic shutter type dust removal blackboard |
-
2014
- 2014-05-15 CN CN201420247971.1U patent/CN203920124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110949040A (en) * | 2019-12-09 | 2020-04-03 | 芜湖应天光电科技有限责任公司 | Full-automatic shutter type dust removal 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: 20141105 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |