CN202079992U - Blackboard - Google Patents
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- Publication number
- CN202079992U CN202079992U CN2011201842155U CN201120184215U CN202079992U CN 202079992 U CN202079992 U CN 202079992U CN 2011201842155 U CN2011201842155 U CN 2011201842155U CN 201120184215 U CN201120184215 U CN 201120184215U CN 202079992 U CN202079992 U CN 202079992U
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- China
- Prior art keywords
- blackboard
- band
- writing
- support
- control
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- 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 discloses a blackboard which comprises a bracket. Drive rolls and transmission rolls which are arranged in parallel at intervals are arranged on the bracket, an annular board writing band leading the drive rolls and the transmission rolls to be in transmission fit is sheathed on the periphery of the drive rolls and the transmission rolls, the bracket is further provided with a blackboard eraser which is in elastic press fit with the outer side surface of the part of the board writing band back to a user, and the bracket is further provided with a driving device driving the drive rolls to rotate. The driving device comprises drive bevel gears fixedly arranged on the drive rolls, and control bevel gears arranged on the bracket through a rotation axis, the control bevel gears and the driving bevel gears are in transmission engagement, and the rotation axis is further fixedly provided with a control wheel for driving the control bevel gears to rotate. The blackboard with the structure has a reasonable structure, is effort-saving to write and erase, difficult to lead chalk powder to fly after erasing, convenient to use, suitable for being used in various teaching or meeting places, and beneficial to maintaining tidiness and sanitation of teaching or meeting environments.
Description
Technical field
The utility model relates to a kind of blackboard.
Background technology
Blackboard is can wipe easily after being used for writing on its surface, but and the flat board of Palingraphia, very extensive in teaching, displaying or meeting applications.Blackboard on the traditional sense is a scleroid flat board, and surperficial available chalk or other pens are write, and mostly are black, and be blackish green or white.During use, the writer needs according to the writing position on blackboard, the time and on tiptoe the time and bend over, write very effort, and for height is not very high writer, can't get at the middle and upper part of blackboard at all, also caused difficult situation during use.But occurred the blackboard that a kind of up and down push-and-pull is moved in the market,, can arbitrarily move the upper-lower position of two flat boards, so solve the problem of writing effort by two dull and stereotyped compositions up and down.But traditional blackboard write finish after, could write once more after need wiping writing with blackboard eraser, and the process that this erases the board is all by grasping blackboard eraser with manually wiping, not only waste time and energy, and wipe the chalk dust that gets off and fly away nearby in the air, affect greatly healthy.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure at above-mentioned deficiency, write laborsaving, wipe laborsaving, and wipe the back dust be difficult for flying away blackboard easy to use.
For solving the problems of the technologies described above, the design feature of this blackboard is to comprise support, support is provided with driven roller and the live-roller that parallel interval is provided with, be set with the annular slab book band that driven roller and live-roller transmission are cooperated on driven roller and the live-roller periphery, blackboard eraser also is installed on the support, blackboard eraser cooperates with writing on the blackboard band portion lateral surface elastic compression back to the user, and the drive unit that driven roller is rotated also is installed on the support.
The blackboard of this structure be by annular circulation plates face structure and elasticity extruding wipe configuration realize writing laborsaving, wipe laborsavingly, and wipe the back dust and be difficult for flying away, easy to use.
Annular circulation plates face structure comprises that mainly parallel interval is arranged on driven roller and the live-roller on the support, be set with the annular slab book band on driven roller and the live-roller, the writing on the blackboard band is made by flexible material, driven roller and live-roller cooperate by the transmission of writing on the blackboard band, like this, the writing on the blackboard band just can be done annular cycle rotation around the periphery of driven roller and live-roller.For convenience of description, with driven roller and plane, live-roller central shaft place is the interface, the writing on the blackboard band is divided into two parts symmetrical, wherein, is called the front portion near Writer's writing on the blackboard band portion, another part, just be called the rear portion away from Writer's writing on the blackboard band portion, the writing on the blackboard band is exactly the carrier of writer's writing words, and the writer can write on the anterior lateral surface of writing on the blackboard band, and come mobile writing position by the rotor plate book band, therefore convenient and labor-saving when writing.The drive unit that cooperates with the driven roller transmission also is installed on the support, like this, just can rotates by the movable plate book band by the operation drive unit, it is convenient to operate.
Elasticity extruding wipe configuration mainly comprises rack-mount blackboard eraser, and the wiping part of blackboard eraser cooperates with the writing on the blackboard band portion lateral surface elastic compression back to the user, and just the rear outside surface elastic with the writing on the blackboard band is pressed together.Like this, when the anterior lateral surface of writing band is write when full, the operation drive unit rotates writing on the blackboard band shape, at this moment, play the effect of wiping writing automatically thereby blackboard eraser will friction take place with the rear outside face of writing on the blackboard band, and is time saving and energy saving.Because blackboard eraser is arranged on away from Writer's writing on the blackboard band one side, therefore played the effect of isolating dust, help avoid dust from flying.
As a kind of implementation, described drive unit comprises the driving bevel gear that is fixedly mounted on the driven roller, also comprise by the rack-mount control bevel gear of rotating shaft, the control bevel gear meshes with driving Bevel Gear Transmission, also is installed with in the rotating shaft to drive the control wheel that the control bevel gear is rotated.
By the driving bevel gear and the control bevel gear of transmission engagement, can realize the powerdriven commutation of driven roller, and realize the manual drives of writer the writing on the blackboard band by taking turns with the control of control bevel gear coaxial rotation, very convenient.
As improvement, described control wheel is belt pulley, also is provided with the auxiliary wheel corresponding with controlling wheel on the support, between control wheel and the auxiliary wheel control band that transmission cooperates is installed, and is installed with the block of protrusion on the control band lateral surface.
Auxiliary wheel is set on support, and realizes the transmission of auxiliary wheel and control wheel by the control band that prolongs, the writer can the blackboard optional position by stir control with on block, come the drive plate book band to rotate, convenient.
As improvement, the gripper shoe that is arranged in the writing on the blackboard band inner chamber is installed also on the support.
Because the writing on the blackboard band has softness characteristics, therefore when the writing on the blackboard belt surface is write, can be out of shape because of pressurized.The main effect of gripper shoe is exactly when writing to feel that with writing of ordinary rigid blackboard difference is little like this for the writing on the blackboard band provides support power, writes more convenient.
As a kind of implementation, described blackboard eraser comprises cylindrical outer casing, be installed with the slide bar of faucal portion extension outward in the shell, slip cap is equipped with wiping board on the slide bar, wiping board is installed with wiper on the outer face, also be set with the spring that wiping board is outwards promoted on the slide bar, the shell oral area is installed with wiping board screens spacing ring in the enclosure.
This blackboard eraser is mainly realized wiping to writing on the blackboard band lateral surface by being arranged on wiper on the wiping board, and plays the effect that makes wiper elastic compression writing on the blackboard band by the spring that is sleeved on the slide bar.The spacing ring of outer casing end and wiping board clamping matching can prevent that spring from releasing shell with wiping board.When the writing on the blackboard band rotated, wiper is writing on the blackboard band outer surface slip relatively just, has so just played the effect of automatic wiping writing.
As improvement, on the support of blackboard eraser below hopper is installed also.
Hopper is set on support, can collects fallen chalk dust under the joining place of slave plate book band and blackboard eraser, both be convenient to unified the processing, further reduced the possibility that chalk dust flies away again.
In sum, adopt the blackboard of this structure, rational in infrastructure, write laborsaving, wipe laborsavingly, and wipe the back dust and be difficult for flying away, easy to use, be adapted at various teaching or meeting occasion and use, help to keep teaching or the clean and tidy health of conferencing environment.
Description of drawings
In conjunction with the accompanying drawings the utility model is described in further details:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A cutaway view of Fig. 1.
Among the figure: 1 is support, and 2 is driven roller, and 3 is live-roller, and 4 are the writing on the blackboard band, 5 is blackboard eraser, and 6 for driving bevel gear, and 7 are the control bevel gear, and 8 are rotating shaft, 9 are the control wheel, and 10 is auxiliary wheel, and 11 are the control band, 12 is block, and 13 is gripper shoe, and 14 is hopper, 15 is shell, and 16 is slide bar, and 17 is wiping board, 18 is wiper, and 19 is spring, and 20 is spacing ring.
The specific embodiment
As shown in Figure 1, this blackboard comprises support 1, and support 1 is the rectangle frame, and support 1 top is horizontally installed with live-roller 3 by bearing, and support 1 bottom is horizontally installed with driven roller 2 by bearing, driven roller 2 and live-roller 3 corresponding settings at interval.Driven roller 2 and live-roller 3 periphery upper ring caps have writing on the blackboard band 4, and driven roller 2 and live-roller 3 are by writing on the blackboard band 4 transmission in the same way.Writing on the blackboard band 4 annular flat belt for being made by elastomeric material, rough surface is so that transmission and write letter written with chalk.With driven roller 2 and plane, live-roller 3 axial line place is the boundary, and writing on the blackboard band 4 is divided into two parts symmetrical, wherein, is called the front portion near Writer's writing on the blackboard band portion, and another part just is called the rear portion away from Writer's writing on the blackboard band portion.The writer can write letter written with chalk on the anterior lateral surface of writing on the blackboard band 4, and the position by rotor plate book band 4 mobile institute writing words.Support 1 middle part is installed with the gripper shoe 13 that is inserted in writing on the blackboard band 4 annular cavities, and gripper shoe 13 is to press close to the flat board that writing on the blackboard band 4 anterior medial surfaces are provided with.When writing on writing on the blackboard band 4 anterior lateral surfaces, because the elasticity of writing on the blackboard band 4 self, writing on the blackboard band 4 is anterior can be to the direction distortion near writing on the blackboard band 4 rear portions under the pressure of chalk, and so just influence be write and felt and writing quality easily.After gripper shoe 13 was set, gripper shoe 13 can provide support for writing on the blackboard band 4 front portions, helps to improve writing quality.
Blackboard eraser 5 also is installed on the support 1, and blackboard eraser 5 is arranged on the support 1 between driven roller 2 and the live-roller 3, the corresponding setting of rear outside face of blackboard eraser 5 and writing on the blackboard band 4.Blackboard eraser 5 comprises shell 15, and shell 15 is the tubular of an end opening, and shell 15 openings are fixedly mounted on the support 1 towards writing on the blackboard band 4.Be installed with slide bar 16 in the shell 15, the opening of the bearing of trend of slide bar 16 and shell 15 is towards consistent.Be set with wiping board 17 on the slide bar 16, wiping board 17 limit portions and shell 15 inwalls are slidingly matched.Be installed with wiper 18 on wiping board 17 lateral surfaces, wiper 18 is adjacent to writing on the blackboard band 4 rear outside faces and cooperates, and wiper 18 quality softnesses neither can cause damage to writing on the blackboard band 4, can effectively wipe writing again.Also be set with spring 19 on the slide bar 16, the main effect of spring 19 is that wiping board 17 is outwards promoted along slide bar 16, and makes wiper 18 elastic compressions on writing on the blackboard band 4, can guarantee that like this wiper 18 wiping when wiping writing gets cleaner.Shell 15 oral areas are installed with spacing ring 20, and spacing ring 20 and wiping board 17 outside clamping matching have played the effect that prevents wiping board 17 slippage from the slide bar 16.On the support 1 of blackboard eraser 5 belows hopper 14 is installed also, hopper 14 openings up, and are corresponding with the contact portion position of blackboard eraser 5 and writing on the blackboard band 4.Like this, the chalk dust that is got off by blackboard eraser 5 wipings on the writing on the blackboard band 4 will drop under self gravitation in the hopper 14, both play the effect of collecting chalk dust, avoid chalk dust to fly upward again everywhere, help keeping the clean and tidy clean of blackboard surrounding environment.
The drive unit that cooperates with driven roller 2 transmissions also is installed on the support 1, and in the present embodiment, drive unit comprises the driving bevel gear 6 that is installed on the driven roller 2, drives bevel gear 6 and rotates synchronously with driven roller 2.Also control bevel gear 7 is installed on the support 1, control bevel gear 7 and driving bevel gear 6 transmissions engagement by rotating shaft 8.In the present embodiment, the quantity that drives bevel gear 6 and control bevel gear 7 is two covers, lays respectively at the two ends of driven roller 2.Be installed with control wheel 9 and auxiliary wheel 10 in the rotating shaft of two control bevel gears 7 respectively, control wheel 9 and auxiliary wheel 10 periphery upper ring caps have control to be with 11.Be with 11 rotations that two cover driving bevel gears 6 and control bevel gear 7 driven in synchronism driven rollers 2 are rotated in the same way by driving control.Because control is unanimous on the whole with the length of blackboard with 11 length, therefore, all can realize the mobile, very convenient of writing on the blackboard band 4 with 11 by driving control in any position of blackboard.Control is with and is evenly equipped with block 12 on 11 lateral surfaces, can make things convenient for the user to control, and rotates more smooth.
Claims (6)
1. blackboard, it is characterized in that: comprise support (1), support (1) is provided with driven roller (2) and the live-roller (3) that parallel interval is provided with, be set with the annular slab book band (4) that driven roller (2) and live-roller (3) transmission are cooperated on driven roller (2) and live-roller (3) periphery, blackboard eraser (5) also is installed on the support (1), blackboard eraser (5) cooperates with writing on the blackboard band (4) part lateral surface elastic compression back to the user, and the drive unit that driven roller (2) is rotated also is installed on the support (1).
2. blackboard as claimed in claim 1, it is characterized in that: described drive unit comprises the driving bevel gear (6) that is fixedly mounted on the driven roller (2), also comprise by rotating shaft (8) and be installed in control bevel gear (7) on the support (1), control bevel gear (7) meshes with driving Bevel Gear Transmission, also is installed with in the rotating shaft (8) to drive the control wheel (9) that control bevel gear (7) is rotated.
3. blackboard as claimed in claim 2, it is characterized in that: described control wheel (9) is belt pulley, also be provided with the auxiliary wheel (10) corresponding on the support (1) with controlling wheel (9), the control band (11) that transmission cooperates is installed between control wheel (9) and the auxiliary wheel (10), is installed with the block (12) of protrusion on control band (11) lateral surface.
4. as each described blackboard in the claim 1,2 or 3, it is characterized in that: the gripper shoe (13) that is arranged in writing on the blackboard band (4) inner chamber also is installed on the support (1).
5. blackboard as claimed in claim 4, it is characterized in that: described blackboard eraser (5) comprises cylindrical outer casing (15), be installed with the slide bar (16) that extends towards shell (15) oral area in the shell (15), slide bar (16) is gone up slip cap wiping board (17) is housed, wiping board (17) is installed with wiper (18) on the outer face, also be set with the spring (19) that wiping board (17) is outwards promoted on the slide bar (16), shell (15) oral area is installed with the spacing ring (20) of wiping board (17) screens in shell (15).
6. blackboard as claimed in claim 5 is characterized in that: on the support (1) of blackboard eraser (5) below hopper (14) is installed also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201842155U CN202079992U (en) | 2011-06-02 | 2011-06-02 | Blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201842155U CN202079992U (en) | 2011-06-02 | 2011-06-02 | Blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079992U true CN202079992U (en) | 2011-12-21 |
Family
ID=45340646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201842155U Expired - Fee Related CN202079992U (en) | 2011-06-02 | 2011-06-02 | Blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079992U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739697A (en) * | 2017-02-07 | 2017-05-31 | 叶潇 | A kind of Accounting Course blackboard rapidly and efficiently wiping arrangement |
| CN111716945A (en) * | 2019-03-19 | 2020-09-29 | 安徽理工大学 | Blackboard eraser |
-
2011
- 2011-06-02 CN CN2011201842155U patent/CN202079992U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739697A (en) * | 2017-02-07 | 2017-05-31 | 叶潇 | A kind of Accounting Course blackboard rapidly and efficiently wiping arrangement |
| CN111716945A (en) * | 2019-03-19 | 2020-09-29 | 安徽理工大学 | Blackboard eraser |
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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: 20111221 Termination date: 20130602 |