CN202038053U - Disc type rotary blackboard - Google Patents
Disc type rotary blackboard Download PDFInfo
- Publication number
- CN202038053U CN202038053U CN2011201131990U CN201120113199U CN202038053U CN 202038053 U CN202038053 U CN 202038053U CN 2011201131990 U CN2011201131990 U CN 2011201131990U CN 201120113199 U CN201120113199 U CN 201120113199U CN 202038053 U CN202038053 U CN 202038053U
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- CN
- China
- Prior art keywords
- blackboard
- chock
- disc type
- motor
- type revolving
- 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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Abstract
The utility model relates to a disc type rotary blackboard which comprises a disc type blackboard, and a rotating mechanism is arranged at the center of the blackboard. The rotating mechanism can be a rotating shaft, and also can be an output shaft of a motor. When a manual way or a motor is adopted to cause the disc to rotate around the center of a circle, and chalk characters on the blackboard are rotated to be connected with a fixed frame, a sponge or a brush at a slot on the fixed frame can generate relative movement with the characters along with the rotation of the characters so as to generate friction, thus erasing the characters and playing the role of an eraser. The disc type rotary blackboard not only can greatly reduce physical work, and alleviate the dust flying degree, but also is more convenient and easier to implement, easy to realize, and safe and reliable.
Description
Technical field
The utility model relates to a kind of blackboard, is specially a kind of disc type Revolving blackboard.
Background technology
The big blackboard eraser of some lyceums removes inconvenient, and when multimedia PPT demonstration, need use blackboard sometimes, but accounts for blackboard because curtain hides, and causes and can't use most of blackboard.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, this disc type Revolving blackboard of ad hoc meter.
For achieving the above object, the utility model adopts following technical proposals:
A kind of disc type Revolving blackboard comprises discoidal blackboard, and the center of blackboard is provided with rotating mechanism.
As further improvement of the utility model, described rotating mechanism is: a rotating shaft, the inner end of rotating shaft are the center fixation point.
As further improvement of the utility model, the outside of blackboard also is provided with fixed mount, and the one or both ends of fixed mount are provided with outside fixing point.
As further improvement of the utility model, described fixed mount is provided with draw-in groove, is provided with brush body radius, that be used to wipe writing on the blackboard that length is equivalent to black dish type blackboard in the draw-in groove.
As further improvement of the utility model, the outer rim place of described blackboard also is provided with the prevention structure that stops blackboard to rotate.
As further improvement of the utility model, described prevention structure is: the outer rim of blackboard is provided with a circle groove, and the blackboard outer rim also is fixed with pedestal outward, and base via shaft is connected with the chock that can stick into described groove.
As further improvement of the utility model, described pedestal is that insulating materials is made, described chock and axle are made for conductive material, the stub end of chock connects described axle, the outside at the place, tip of chock is provided with insulating barrier, the next door of the stub end of chock is provided with the described chock of rotation can make the contacted with it fixed terminal of stub end, fixed terminal links to each other with motor, motor switch and power supply by lead with described axle, and form a loop, described motor is by the center of output shaft connection blackboard, and the output shaft of motor is formed rotating mechanism.
As further improvement of the utility model, also be provided with the baffle plate that the restriction chock rotates on the described pedestal.
Operation principle:
When manual or motor rotates disk is rotated around the center of circle, when letter written with chalk forwarded Connection Bracket on the blackboard, the sponge at draw-in groove place or hairbrush will turning over along with writing on the fixed mount, and with its generation relative motion, rub, thereby wipe writing, played the effect of blackboard eraser.
When blackboard writes, unstable for avoiding disk to rotate, movable wedge must be pulled down in the groove that is stuck in the disk border place, thus the fixation of playing; When the need Rotary Blackboard or when erasing the board, the cocked chock that then makes progress can rotate.
The beneficial effects of the utility model are, can not only significantly reduce manual labor, alleviate the degree of dust from flying, and more convenient easy row, are easy to realize, and are safe and reliable.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is a dotted portion enlarged drawing among Fig. 1;
Fig. 4 is the structural representation of embodiment 2 chocks and pedestal;
Fig. 5 is the motor circuit schematic diagram.
1. blackboards wherein, 2. rotating shaft, 3. fixed mount, 4. outside fixing point, 5. draw-in groove, 6. groove, 7. pedestal, 8. chock, 9. axle, 10. insulating barrier, 11. fixed terminals, 12. the end of incoming cables, 13. motor side electric wires, 14. motor switch, 15. the chock switch, 16. motor, 17. center fixation point, 18. baffle plate, 19. output shafts, 20. angles.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
The disc type Revolving blackboard of embodiment 1 manual drives
A kind of disc type Revolving blackboard, comprise discoidal blackboard 1 (main body), the center of blackboard 1 is provided with rotating shaft 2, the inner end of rotating shaft 2 is a center fixation point 17, the outer end of rotating shaft 2 links to each other with a fixed mount 3, the other end of fixed mount 3 is provided with outside fixing point 4, and described fixed mount 3 is provided with draw-in groove 5, is provided with brush body radius, that be used to wipe writing on the blackboard 1 (rectangular sponge or hairbrush) that length is equivalent to black dish type blackboard 1 in the draw-in groove 5.Rotating shaft 2 (roller bearing) is actually a movable tube around center of circle fixing point, is similar to the ball bearing of cycle wheel, to reduce the friction between rotating shaft 2 and the fixing point as far as possible.
The outer rim place of blackboard 1 also is provided with the prevention structure that stops blackboard 1 to rotate, described prevention structure is: the outer rim of blackboard 1 is provided with the groove 6 about a circle 1cm, blackboard 1 outer rim also is fixed with pedestal 7 outward, and pedestal 7 is connected with the chock 8 that can stick into described groove 6 by axle 9.
Also be provided with the baffle plate 18 that restriction chock 8 rotates on the pedestal 7, effect is 90 degree about assurance chock 8 rotational angles are, avoids chock 8 lower ends to cause end of incoming cables 12 terminals to damage because of rotation amplitude is excessive.
Embodiment 2 electric motor driven disc type Revolving blackboards
A kind of disc type Revolving blackboard 1 comprises discoidal blackboard 1 (main body), and the center of blackboard 1 is provided with the output shaft 19 of fixing a motor 16, forms rotating mechanism, and motor 16 can be fixed in the groove on the body of wall.The outside of blackboard 1 is provided with fixed mount 3, it is fixing that the two ends of fixed mount 3 are provided with outside fixing point 4, fixed mount 3 passes through the center of blackboard 1 basically in the outside of blackboard 1, be near the center of circle of rotating disk, fixed mount 3 is provided with draw-in groove 5, is provided with brush body radius, that be used to wipe writing on the blackboard 1 (rectangular sponge or hairbrush) that length is equivalent to black dish type blackboard 1 in the draw-in groove 5.
The outer rim place of blackboard 1 also is provided with the prevention structure that stops blackboard 1 to rotate, described prevention structure is: the outer rim of blackboard 1 is provided with the groove 6 about a circle 1cm, blackboard 1 outer rim also is fixed with pedestal 7 outward, and pedestal 7 is connected with the chock 8 that can stick into described groove 6 by axle 9.
Present embodiment adopts motor-driven, pedestal 7 is made for insulating materials, described chock 8 and axle 9 are made (live metal chock 8) for conductive material, the stub end of chock 8 connects described axle 9, the outside at the place, tip of chock 8 is provided with insulating barrier 10, the next door of the stub end of chock 8 is provided with rotates the contacted with it fixed terminal 11 of stub end that chock 8 can make chock 8, fixed terminal 11 connects end of incoming cables 12, axle 9 connects motor side electric wire 13, fixed terminal 11 links to each other with motor and motor switch 14 by lead with described 9, and form a loop, and described motor is by the center of output shaft 19 connection blackboards 1, and the output shaft 19 of motor is formed rotating mechanisms.Chock 8 is formed chock switch 15 jointly with the structure of fixed terminal 11.
Also be provided with the baffle plate 18 that restriction chock 8 rotates on the pedestal 7, effect is 90 degree about assurance chock 8 rotational angles are, avoids chock 8 lower ends to cause end of incoming cables 12 terminals to damage because of rotation amplitude is excessive.
The operation principle of embodiment 1 and embodiment 2:
When manual or motor 16 rotates disk is rotated around the center of circle, when letter written with chalk forwarded Connection Bracket 3 on the blackboard 1, the sponge at draw-in groove 5 places or hairbrush will turning over along with writing on the frame, and with its generation relative motion, rub, thereby wipe writing, played the effect of blackboard eraser.
When blackboard 1 writes, unstable for avoiding disk to rotate, movable wedge 8 must be pulled down in the groove 6 that is stuck in the disk border place, thus the fixation of playing; When need Rotary Blackboard 1 or erase the board 1 the time, the cocked chock 8 that then makes progress can rotate.
Some explanation:
Disk be rotated counterclockwise clockwise direction all can, can make chalk dust in blackboard 1 any half side removing and fall so as far as possible, thereby alleviate the degree of dust from flying greatly, and second half side plate wipes secondary and wipes, can wipe blackboard 1 as early as possible.
2. motor 16 is optional as drive unit.If select for use motor 16 to wipe blackboard 1, forget because of carelessness that sometimes pull-up chock 8 but opens switch by motor 16 work.Like this, blackboard 1 is fixed and causes motor 16 can't rotate output mechanical energy, and then electric energy all is converted into heat energy, produces super-high-current, and coil produces too high heat, reduces by 16 life-spans of motor greatly, even can burn motor 16.For avoiding this situation, can adopt as chock 8 structural maps and design.Principle: like this when blackboard 1 writes, fixedly blackboard 1, chock 8 is left behind, the other end of chock 8 (stub end) upwarps, away from live wire end of incoming cables 12,8 on metal chock passes through the axle screw and is connected with the electric wire of close motor 16, thereby circuit is disconnected, even press motor switch this moment, can not connect circuit yet.When wiping blackboard 1, then the pull-up chock 8, and stub end contacts with end of incoming cables 12, and circuit is connected, and open motor switch 14 this moment, and motor 16 work have so just guaranteed motor 16 operate as normal, and safe operation can allow blackboard 1 normal rotation again.Be enclosed with insulants such as rubber or plastics because the little head end (hand touch end) of metal chock 8 covers, thereby guarantee operator's personal safety.
3. use the fixedly rectangular sponge or the hairbrush of blackboard eraser as, can regularly from draw-in groove 5, unload cleaning or replacing.
4. motor 16 adopts appropriate power small size motor 16, and is unsuitable excessive.
5. this design can not only significantly reduce manual labor, alleviates the degree of dust from flying, and more convenient easy row, is easy to realize, and is safe and reliable.
6. fixed mount 3 can be set according to user preferences with horizontal line angle 20 (0～90 degree).
Claims (8)
1. a disc type Revolving blackboard is characterized in that, comprises discoidal blackboard, and the center of blackboard is provided with rotating mechanism.
2. disc type Revolving blackboard according to claim 1 is characterized in that, described rotating mechanism is: a rotating shaft, the inner end of rotating shaft are the center fixation point.
3. disc type Revolving blackboard according to claim 1 is characterized in that the outside of blackboard also is provided with fixed mount, and the one or both ends of fixed mount are provided with outside fixing point.
4. disc type Revolving blackboard according to claim 3 is characterized in that described fixed mount is provided with draw-in groove, is provided with brush body radius, that be used to wipe writing on the blackboard that length is equivalent to black dish type blackboard in the draw-in groove.
5. disc type Revolving blackboard according to claim 1 is characterized in that, the outer rim place of described blackboard also is provided with the prevention structure that stops blackboard to rotate.
6. disc type Revolving blackboard according to claim 1 is characterized in that, described prevention structure is: the outer rim of blackboard is provided with a circle groove, and the blackboard outer rim also is fixed with pedestal outward, and base via shaft is connected with the chock that can stick into described groove.
7. disc type Revolving blackboard according to claim 6, it is characterized in that, described pedestal is that insulating materials is made, described chock and axle are made for conductive material, the stub end of chock connects described axle, the outside at the place, tip of chock is provided with insulating barrier, the next door of the stub end of chock is provided with the described chock of rotation can make the contacted with it fixed terminal of stub end, fixed terminal and described axle are by lead and motor, motor switch and power supply link to each other, and form a loop, described motor is by the center of output shaft connection blackboard, and the output shaft of motor is formed rotating mechanism.
8. according to claim 6 or 7 described disc type Revolving blackboards, it is characterized in that, also be provided with the baffle plate that the restriction chock rotates on the described pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201131990U CN202038053U (en) | 2011-04-18 | 2011-04-18 | Disc type rotary blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201131990U CN202038053U (en) | 2011-04-18 | 2011-04-18 | Disc type rotary blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038053U true CN202038053U (en) | 2011-11-16 |
Family
ID=44965516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201131990U Expired - Fee Related CN202038053U (en) | 2011-04-18 | 2011-04-18 | Disc type rotary blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202038053U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818158A (en) * | 2014-03-12 | 2014-05-28 | 曹玉升 | Automatic character-erasing dedusting disc-shaped electric mechanical blackboard for teaching |
| CN108437660A (en) * | 2018-04-02 | 2018-08-24 | 靳璟瑞 | Easy erasing circle blackboard |
-
2011
- 2011-04-18 CN CN2011201131990U patent/CN202038053U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818158A (en) * | 2014-03-12 | 2014-05-28 | 曹玉升 | Automatic character-erasing dedusting disc-shaped electric mechanical blackboard for teaching |
| CN103818158B (en) * | 2014-03-12 | 2015-06-24 | 商丘师范学院 | Automatic character-erasing dedusting disc-shaped electric mechanical blackboard for teaching |
| CN108437660A (en) * | 2018-04-02 | 2018-08-24 | 靳璟瑞 | Easy erasing circle blackboard |
| CN108437660B (en) * | 2018-04-02 | 2020-02-07 | 靳璟瑞 | Easy-to-wipe circular blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120418 |