CN204774248U - What be adapted to two class lyceums prevents that reflection of light is from erasing blackboard - Google Patents
What be adapted to two class lyceums prevents that reflection of light is from erasing blackboard Download PDFInfo
- Publication number
- CN204774248U CN204774248U CN201520516326.XU CN201520516326U CN204774248U CN 204774248 U CN204774248 U CN 204774248U CN 201520516326 U CN201520516326 U CN 201520516326U CN 204774248 U CN204774248 U CN 204774248U
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- blackboard
- hinged
- roller
- centerbody
- erasing
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Abstract
The utility model provides a what be adapted to two class lyceums prevents that reflection of light is from erasing blackboard, including the centerbody, the left side blackboard framework and the right side blackboard framework of symmetry are connected to the both sides of centerbody, still be provided with the left side round pin axle and the right side round pin axle of symmetry on the centerbody, be provided with the forked tail channel in the centerbody, the upside of centerbody is provided with motor fixing base and elevator motor, elevator motor connects the lead screw, be provided with on the lead screw and erase the motor, the epaxial articulated left side blackboard that has of left side round pin, the epaxial articulated right side blackboard that has of right side round pin, be provided with the rod track on the blackboard of left side, set up brush roller one end in the roller track, the other end of brush roller is provided with the roller keyway, the orbital bottom of roller is provided with roller fixed establishment, the lower extreme of left side blackboard and right side blackboard all is provided with the ash chute, the rear side of left side blackboard and right side blackboard still is provided with the left side telescopic machanism and the right side telescopic machanism of symmetry.
Description
The utility model relates to teaching aid field, specifically, relates to a kind of reflection-proof being adapted to two class lyceums from erasing blackboard.
Background technology
When carrying out large-scale open class teaching, teachers often use large-scale classroom to give lessons.At present, the blackboard in large-scale classroom generally adopts two pieces or polylith blackboard to combinationally use to increase the amount of writing, and because space, classroom is comparatively large, holds student more, students can be watched from different angles, is so just very easy to the phenomenon occurring blackboard reflective light.Simultaneously, because electric equipment modern inside multi-media classroom is a lot, if use traditional method erased the board inevitably to produce a large amount of chalk dusts, these dusts waft in electrical equipment, the service life of equipment can be reduced, also harmful effect is caused to the health of teachers and students simultaneously.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of reflection-proof being adapted to two class lyceums from erasing blackboard, facilitates erasing blackboard dust, prevents contamination by dust classroom environment.
The utility model adopts following technical scheme to realize goal of the invention:
A kind of reflection-proof being adapted to two class lyceums is from erasing blackboard, comprise centerbody, it is characterized in that: the left side blackboard framework of the both sides connected symmetrical dendrimer of described centerbody and right side blackboard framework, described centerbody is also provided with symmetrical left side bearing pin and right side bearing pin, dovetail conduit is provided with in described centerbody, the upside of described centerbody is provided with motor fixing seat and lifting motor, described lifting motor connects leading screw, described leading screw is provided with erasing motor, described left side bearing pin is hinged with left side blackboard, described right side bearing pin is hinged with right side blackboard, described left side blackboard is provided with rod track, hairbrush roller one end is set in described roller track, the other end of described hairbrush roller is provided with roller keyway, the bottom of described roller track is provided with roller fixed mechanism, the lower end of described left side blackboard and right side blackboard is provided with ash-pit, the rear side of described left side blackboard and right side blackboard is also provided with symmetrical left side telescoping mechanism and right side telescoping mechanism.
As the further restriction to the technical program, described roller fixed mechanism comprises telescopic cavity, roller fixed block and coil tension spring, described coil tension spring to be fixed in described telescopic cavity and to be connected with described roller fixed block, and described roller fixed block can put in and stretch out in described telescopic cavity.
As the further restriction to the technical program, it is fixing hinged that described left side telescoping mechanism comprises left side, one end of hinged hinged left side connecting rod is fixed in described left side, the piston rod of the other end hinged left side hydraulic cylinder of described left side connecting rod, piston rod also hinged Left-side support bar one end of described left side hydraulic cylinder, the back of the described Left-side support bar other end hinged described left side blackboard, it is fixing hinged that described right side telescoping mechanism comprises right side, one end of hinged hinged right side connecting rod is fixed on described right side, the piston rod of the other end hinged right side hydraulic cylinder of described right side connecting rod, piston rod also hinged Right side support bar one end of described right side hydraulic cylinder, the back of the described Right side support bar other end hinged described right side blackboard.
As the further restriction to the technical program, the side of described left side blackboard and right side blackboard is provided with interference edge.
Compared with prior art, advantage of the present utility model and good effect are: the utility model can regulate separately according to actual conditions and be arranged on hydraulic jack corresponding on rear side of left side blackboard or right side blackboard, control the convergent-divergent of its piston rod, blackboard surface can be realized by left side telescoping mechanism or right side telescoping mechanism and low-angle adjustment between body of wall is installed, automaticity is high, practical.When the erasing of full needs write by two pieces of blackboards time, hydraulic control oil cylinder makes the overhang of its piston rod reach maximum, now the distance of left side blackboard and right side blackboard reaches minimum, and be fastened togather by interference edge, roller keyway and the erasing motor output shaft of hairbrush roller one end coordinate, and erasing motor starts to rotate, rotation followed by hairbrush roller, lifting motor starts simultaneously, drives erasing motor up or descending, complete the erasing to whole blackboard surface by the effect of leading screw.In whole process, do not need artificial intervention, be sealed in owing to wiping the chalk dust got off in the cavity of two pieces of blackboards formation, automatically can drop into ash-pit under gravity, avoid pollution, improve teaching environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is top view of the present utility model.
Fig. 3 is the state diagram of the utility model when erasing the board.
Fig. 4 is the structural representation of lifting motor of the present utility model and leading screw.
Fig. 5 is the structural representation of roller fixed mechanism of the present utility model.
In figure, blackboard framework on the left of 1-, blackboard on the left of 2-, 3-hairbrush roller, 4-falls ash-pit, 5-roller keyway, 6-wipes motor, 7-dovetail conduit, 8-interference edge, blackboard framework on the right side of 9-, blackboard on the right side of 10-, bearing pin on the right side of 11-, 12-centerbody, 13-lifting motor, bearing pin on the left of 14-, 15-Right side support bar, fix hinged on the right side of 16-, connecting rod on the right side of 17-, hydraulic cylinder on the right side of 18-, hydraulic cylinder on the left of 19-, connecting rod on the left of 20-, fix hinged on the left of 21-, 22-Left-side support bar, 23-telescopic cavity, 24-coil tension spring, 25-motor fixing seat, 26-leading screw, 27-roller fixed block, 28-rod track.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is further described in detail.
See Fig. 1-Fig. 5, the utility model comprises centerbody 12, the left side blackboard framework 1 of the both sides connected symmetrical dendrimer of described centerbody 12 and right side blackboard framework 9, described centerbody 12 is also provided with symmetrical left side bearing pin 14 and right side bearing pin 11, dovetail conduit 7 is provided with in described centerbody 12, the upside of described centerbody 12 is provided with motor fixing seat 25 and lifting motor 13, described lifting motor 13 connects leading screw 26, described leading screw 26 is provided with erasing motor 6, described left side bearing pin 14 is hinged with left side blackboard 2, described right side bearing pin 11 is hinged with right side blackboard 10, described left side blackboard 2 is provided with rod track 28, hairbrush roller 3 one end is set in described roller track 28, the other end of described hairbrush roller 3 is provided with roller keyway 5, the bottom of described roller track 28 is provided with roller fixed mechanism, the lower end of described left side blackboard 2 and right side blackboard 10 is provided with ash-pit 4, the rear side of described left side blackboard 2 and right side blackboard 10 is also provided with symmetrical left side telescoping mechanism and right side telescoping mechanism.
Described roller fixed mechanism comprises telescopic cavity 23, roller fixed block 27 and coil tension spring 24, described coil tension spring 24 to be fixed in described telescopic cavity 23 and to be connected with described roller fixed block 27, and described roller fixed block 27 can put in and stretch out in described telescopic cavity 23.
Described left side telescoping mechanism comprises left side fixing hinged 21, one end of hinged 21 hinged left side connecting rods 20 is fixed in described left side, the piston rod of the other end hinged left side hydraulic cylinder 19 of described left side connecting rod 20, piston rod also hinged Left-side support bar 22 one end of described left side hydraulic cylinder 19, the back of described Left-side support bar 22 other end hinged described left side blackboard 2, described right side telescoping mechanism comprises right side fixing hinged 16, one end of hinged 16 hinged right side connecting rods 17 is fixed on described right side, the piston rod of the other end hinged right side hydraulic cylinder 18 of described right side connecting rod 17, piston rod also hinged Right side support bar 15 one end of described right side hydraulic cylinder 18, the back of described Right side support bar 15 other end hinged described right side blackboard 10.
The side of described left side blackboard 2 and right side blackboard 10 is provided with interference edge 8.
Workflow of the present utility model is: when there is the reflective phenomenon of blackboard surface in the process of teaching, user can regulate separately according to actual conditions and be arranged on hydraulic jack corresponding on rear side of left side blackboard 2 or right side blackboard 10, control the convergent-divergent of its piston rod, blackboard surface can be realized by left side telescoping mechanism or right side telescoping mechanism and low-angle adjustment between body of wall is installed, automaticity is high, practical.
When the erasing of full needs write by two pieces of blackboards time, hydraulic control oil cylinder makes the overhang of its piston rod reach maximum, now the distance of left side blackboard 2 and right side blackboard 10 reaches minimum, and be fastened togather by interference edge 8, roller keyway 5 and erasing motor 6 output shaft of hairbrush roller 3 one end coordinate, when wiping motor 6 and starting to rotate, rotation followed by hairbrush roller 3, lifting motor 13 starts simultaneously, drive erasing motor 6 up or descending by the effect of leading screw 26, complete the erasing to whole blackboard surface.In whole process, do not need artificial intervention, be sealed in owing to wiping the chalk dust got off in the cavity of two pieces of blackboards formation, automatically can drop into ash-pit 4 under gravity, avoid pollution, improve teaching environment.When not needing erasing, roller fixed block 27 stretches out telescopic cavity 23, hairbrush roller 3 is positioned at the upside of roller fixed block 27, hairbrush roller 3 is lifted fixing, when hairbrush roller 3 moves downward, hairbrush rod 3 spinning under the drive of erasing motor 6, be compressed to by roller fixed block 27 in telescopic cavity 23, hairbrush rod 3 is crossed roller fixed block 27 and is moved downward along rod track 28.
Claims (4)
1. the reflection-proof being adapted to two class lyceums is from erasing blackboard, comprise centerbody, it is characterized in that: the left side blackboard framework of the both sides connected symmetrical dendrimer of described centerbody and right side blackboard framework, described centerbody is also provided with symmetrical left side bearing pin and right side bearing pin, dovetail conduit is provided with in described centerbody, the upside of described centerbody is provided with motor fixing seat and lifting motor, described lifting motor connects leading screw, described leading screw is provided with erasing motor, described left side bearing pin is hinged with left side blackboard, described right side bearing pin is hinged with right side blackboard, described left side blackboard is provided with rod track, hairbrush roller one end is set in described roller track, the other end of described hairbrush roller is provided with roller keyway, the bottom of described roller track is provided with roller fixed mechanism, the lower end of described left side blackboard and right side blackboard is provided with ash-pit, the rear side of described left side blackboard and right side blackboard is also provided with symmetrical left side telescoping mechanism and right side telescoping mechanism.
2. the reflection-proof being adapted to two class lyceums according to claim 1 is from erasing blackboard, it is characterized in that: described roller fixed mechanism comprises telescopic cavity, roller fixed block and coil tension spring, described coil tension spring to be fixed in described telescopic cavity and to be connected with described roller fixed block, and described roller fixed block can put in and stretch out in described telescopic cavity.
3. the reflection-proof being adapted to two class lyceums according to claim 1 is from erasing blackboard, it is characterized in that: it is fixing hinged that described left side telescoping mechanism comprises left side, one end of hinged hinged left side connecting rod is fixed in described left side, the piston rod of the other end hinged left side hydraulic cylinder of described left side connecting rod, piston rod also hinged Left-side support bar one end of described left side hydraulic cylinder, the back of the described Left-side support bar other end hinged described left side blackboard, it is fixing hinged that described right side telescoping mechanism comprises right side, one end of hinged hinged right side connecting rod is fixed on described right side, the piston rod of the other end hinged right side hydraulic cylinder of described right side connecting rod, piston rod also hinged Right side support bar one end of described right side hydraulic cylinder, the back of the described Right side support bar other end hinged described right side blackboard.
4. the reflection-proof being adapted to two class lyceums according to claim 1 is from erasing blackboard, it is characterized in that: the side of described left side blackboard and right side blackboard is provided with interference edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516326.XU CN204774248U (en) | 2015-07-16 | 2015-07-16 | What be adapted to two class lyceums prevents that reflection of light is from erasing blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516326.XU CN204774248U (en) | 2015-07-16 | 2015-07-16 | What be adapted to two class lyceums prevents that reflection of light is from erasing blackboard |
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| Publication Number | Publication Date |
|---|---|
| CN204774248U true CN204774248U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520516326.XU Expired - Fee Related CN204774248U (en) | 2015-07-16 | 2015-07-16 | What be adapted to two class lyceums prevents that reflection of light is from erasing blackboard |
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| CN (1) | CN204774248U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042730A (en) * | 2016-06-21 | 2016-10-26 | 张男 | Blackboard |
| CN108859511A (en) * | 2018-06-12 | 2018-11-23 | 贾石硕 | A kind of turnover type dust-separation blackboard |
-
2015
- 2015-07-16 CN CN201520516326.XU patent/CN204774248U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042730A (en) * | 2016-06-21 | 2016-10-26 | 张男 | Blackboard |
| CN108859511A (en) * | 2018-06-12 | 2018-11-23 | 贾石硕 | A kind of turnover type dust-separation 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: 20151118 Termination date: 20190716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |