CN85202691U - Self-erasing ring shape blackboard - Google Patents
Self-erasing ring shape blackboard Download PDFInfo
- Publication number
- CN85202691U CN85202691U CN 85202691 CN85202691U CN85202691U CN 85202691 U CN85202691 U CN 85202691U CN 85202691 CN85202691 CN 85202691 CN 85202691 U CN85202691 U CN 85202691U CN 85202691 U CN85202691 U CN 85202691U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- annular
- writing
- teaching
- rotary
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses an innovative blackboard for teaching. The common blackboard for teaching is a black flat plate, and the chalk handwriting is erased by people using blackboard erasers so as to cause dust nuisance and affect the health of teachers and students. The utility model is formed by special annular blackboards, the front surface can be written by the chalk, the handwriting turns to the back surface along the annular blackboard, and the chalk handwriting can be automatically erased in a seal cover. Consequently, the utility model has the advantages that the blackboard is erased without using hands, the teaching time is relatively increased, no dust nuisance is generated, the health of teachers and students is protected, the writing area of the blackboard is increased, the labour intensity of the teachers is relieved, etc. The utility model is suitable for all teaching departments.
Description
The invention relates to a kind of teaching blackboard of innovation, particularly can wipe chalk writing automatically under closed state.
Existing teaching blackboard is black or blackish green flat board, writes with chalk, wipes chalk writing by the human Blackboard eraser.Its shortcoming is:
1. the dust from flying during crocus writing, the infringement teachers and students are healthy, pollute the classroom.
2. a crocus writing will expend certain instructional blocks of time.
3. blackboard is write and placed restrictions on by teacher's height, has promptly placed restrictions on the write area of blackboard, also causes teacher's health to block student's sight line.
4. the teacher writes from top to bottom, use on tiptoe or the unnatural body posture of semi-crouch, also will erase the board, and has increased teacher's labour intensity.
Because chalk is inexpensive, therefore still used widely.People only improve above-mentioned defective from " dust-free chalk " aspects such as " vacuum cleaning Blackboard erasers " at present.And the invention is set about from transforming blackboard itself, and a kind of new-type rotary-type automatic erasing blackboard is provided, and reaches to overcome the purpose that traditional blackboard adds above-mentioned many defectives of chalk.
The invention realizes as follows, narrates in conjunction with schematic diagram 1:
Fig. 1 is the side view of the invention, the annular blackboard with certain width (1) that struts by top roll (2) and lower roll (12), by wiping board roller (4), the writing of the special construction of seal closure (7) and collection tube cell compositions such as (8) is from wiping device, wherein wiping board roller (4) closely contacts with annular blackboard (1), bearing (3), bearing (10) and bearing (5) are respectively top roll (2), the rotating stand of lower roll (12) and wiping board roller (4), small belt pulley (6) is fastened on the wiping board roller, big belt pulley (11) is fastened on the lower roll (12), greatly, small belt pulley is by belt (9) transmission, seal closure (7) covers wiping board roller (4), and with the collection tube cell (8) be communicated with, write gripper shoe (14) and be close to the inside of annular blackboard (1), form blackboard writing surface (15).This device is driven by electric power or manpower, by big small belt pulley and belt wiping board roller, upper and lower roll and annular blackboard (1) is rotated.Storage groove (13) can hold chalk, religion rod etc.
The teacher writes on blackboard writing surface (15) with chalk, later can be with electronic or blackboard writing surface (15) is constantly moved up.Write gripper shoe (14) and be equivalent in the former classroom fixedly blackboard.Move to the writing of writing on the above annular blackboard face of gripper shoe (14), be not subjected to placing restrictions on of teacher's height, therefore former relatively fixedly blackboard highly increases, and promptly write area increases, also avoids teacher's health to block student's sight line.Because annular blackboard writing surface (15) can move up, the teacher can be in not semi-crouch all the time or natural posture is on tiptoe write, and to old teacher, writes before can also being sitting in annular blackboard.Useless chalk writing upwards turns to the back side of rotary-type automatic erasing blackboard through top roll (2) with annular blackboard (1), be moved down into writing again from wiping the device place, utilize the drive of belt and large and small belt pulley, make the linear velocity of the outer peripheral lines speed of wiping board roller (4) greater than annular blackboard (1), and direction is opposite, and wiping board roller (4) can be wiped the useless chalk writing on the annular blackboard (1) like this.Covered wiping board roller (4) at writing from the seal closure (7) wiped in the device, prevented that the outer of chalk dust from raising.Collection tube cell (8) can deposit the collection dust, in order to removing.Also can external dust catcher, obtain better effect.
The remarkable advantage of the invention is:
1. do not need to take the chalk writing of Blackboard eraser on erasing the board, do not have chalk dust to fly upward, help protecting the healthy and classroom of teachers and students to be cleaned with hand.
2. do not need the teacher to erase the board, do not expend the time of erasing the board, increased the instructional blocks of time on the classroom relatively.
3. the blackboard height increases, and writes and highly is not subjected to teacher's height, short placing restrictions on, and has expanded the blackboard write area, in order to avoid teacher's health blocks student's sight line.
4. can arbitrarily select the comfortable attitude of nature for use when the teacher writes, need not erase the board again, reduce labor intensity.
The annular blackboard of the invention (1) can be made into flat belt shape blackboard, also can make the annular blackboard of the crawler belt shape of being made up of stripe board.With reference to Fig. 2, Fig. 3, Fig. 4, be example with flat belt shape annular blackboard, describe the embodiment of the invention in detail:
Fig. 2 is the front view of the rotary-type automatic erasing blackboard of flat belt shape, for ease of seeing internal structure clearly, prescinds an annular blackboard on Fig. 2.Fig. 3 is the left view of Fig. 2, and Fig. 4 is the A-A profile of Fig. 2.
The annular blackboard (1) that M is wide, top roll (2) and the lower roll (12) long by M strut, and the writing at the back side of rotary-type automatic erasing blackboard contacts with the tight face of annular blackboard (1) from the long wiping board roller of wiping in the device (4) of M.Bearing (3), bearing (10) and bearing (5) are respectively the top roll (rotating stands of (2), lower roll (12) and wiping board roller (4), and being assemblied on left pillar (17) and the right pillar (30).For preventing the left and right sides play and the distortion of annular blackboard (1), the face two-side making has equally spaced synchronous projection (18) within it, and matches with the synchronous slotted eye (16) of upper and lower roll two ends, forms synchronization structure.Be lined with at the inner face of annular blackboard (1) and write gripper shoe (14), write gripper shoe (14) by cushion block (22), set screw (21) and adjusting nut (20) are fixed on the left and right pillar.Adjusting nut (20) can change the distance of writing a gripper shoe (14) and an intercolumniation, can change the rate of tension of annular blackboard (1).Have the chute (19) that can allow synchronous projection (18) slide to pass through in two sides of writing gripper shoe (14), write the writing surface (15) that annular blackboard that gripper shoe (14) is close to has partly just constituted annular blackboard like this, make about blackboard can not take place when writing, double swerve.After blackboard writing surface (15) is used, can start the motor (23) that is fixed on the pillar, the driving wheel (24) that is contained on the motor (23) is rotated.Drive driven pulley (26) and driven pulley is contained in coaxial small belt pulley (6), wiping board roller (4) rotates together by belt (25), small belt pulley (6) drives big belt pulley (11), upper and lower roll and annular blackboard (1) by belt (9), and blackboard writing surface (15) is moved up.When rotating, wipes on wiping board roller (4) chalk writing on the annular blackboard (1).Be stained with fibre felt layer (31) on wiping board roller (4) surface, can protect the blackboard surface to be beneficial to again and wipe writing.Because of seal closure (7) covers the sealing function of wiping board rod (4), the dust of chalk is not just understood outer not raising.Collection tube cell (8) can be collected the deposition dust, so that remove, also can external dust catcher, and can obtain the better effect of wiping chalk writing and sealing function.Storage groove (13) can hold articles for use such as chalk, religion rod.Handle (28), rocking arm (29), commutation support tooth (27) and big belt pulley (11) constitute hand gear together.Handle (28) and rocking arm (29) can be made 180 degree with interior upper and lower reciprocating rotating, and commutation support tooth (27) has three kinds of operating positions.First kind of position breaks away from rocking arm (29) and big belt pulley (11), uses can not drive rocking arm (29) when electronic and rotate together; Second kind of position is to do 180 bottom-up degree revolutions when rocking arm (29), commutation support tooth (27) can drive big belt pulley one and run up, blackboard writing surface (15) is moved up, when rocking arm (29) was from up to down return action, unidirectional support tooth (27) was thrown off, and makes big belt pulley and writing surface (15) all motionless, like this; rocking arm (29) is made the reciprocating rotating in the 180 degree scopes, and blackboard writing surface (15) is to move up step by step, has played manual effect; The third support tooth operating position is opposite with second kind, and promptly rocking arm is made the reciprocating rotating in the 180 degree scopes, and blackboard writing surface (15) is from up to down to move step by step, as revising clerical error, purposes such as teaching needs.Forward and reverse running of the annular blackboard when electronic, the wiring that only needs to change motor can solve.
The invention is applicable to all large, medium and small schools and other kinds teaching, demonstrates the occasion use.
Claims (8)
1, a kind of teaching blackboard is characterized in that by annular blackboard [1], goes up rod [2], rod [12], writing be from the rotary-type automatic erasing blackboard of wiping device, write gripper shoe [14], support, electric device and hand gear are formed down.
2, teaching blackboard according to claim 1, the crawler belt shape that the annular blackboard (1) that it is characterized in that rotary-type automatic erasing blackboard is made up of flat belt shape or stripe board can rotating loop configuration blackboard, the face two-side making has equidistant synchronous projection (18) within it.
3, teaching blackboard according to claim 1 is characterized in that the writing of rotary-type automatic erasing blackboard is to be made of seal closure (7), collection tube cell (8) and wiping board rod (4) from wiping device, can external dust catcher on collection tube cell (8).
4, teaching blackboard according to claim 1, what it is characterized in that rotary-type automatic erasing blackboard writes gripper shoe (14), the spacing of it and support can be regulated, thereby regulate the rate of tension of annular blackboard (1), its two side also has chute (19), constitutes the blackboard writing surface (15) of writing about Shi Buhui, teetertottering with the annular blackboard of being close to that has synchronous projection (18).
5, teaching blackboard according to claim 1 is characterized in that the power that rotary-type automatic erasing blackboard rotates is by the electric power of electric device or manpower or both dual-purposes of hand gear.
6, teaching blackboard according to claim 1 is characterized in that the last rod (2) of rotary-type automatic erasing blackboard, down two ends of rod (12) have synchronous slotted eye (16) and match with the annular blackboard that has synchronous projection (18) and form the synchronization structure that can stop annular blackboard left and right sides play and the distortion of plate face.
7, teaching blackboard according to claim 1 is characterized in that the hand gear of rotary-type automatic erasing blackboard is made up of commutation support tooth (27), handle (28), rocking arm (29) and big belt pulley (11).Along with rocking arm (29) is made the interior upper and lower reciprocating rotating of 180 degree scopes, three kinds of operating positions that support tooth (27) has, three kinds of actions that make the annular blackboard writing surface can do " motionless ", " only moving up ", " only moving down " respectively form.
8, writing according to claim 3 is characterized in that from wiping device the surface of wiping board rod (4) is stained with the fibrofelt (31) that can protect the annular blackboard surface and be easy to wipe writing.The one-tenth face contacts between wiping board rod (4) and the annular blackboard (1), and wiping board rod (4) outer peripheral lines speed is greater than the linear velocity of annular blackboard (1), and direction is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85202691 CN85202691U (en) | 1985-06-29 | 1985-06-29 | Self-erasing ring shape blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85202691 CN85202691U (en) | 1985-06-29 | 1985-06-29 | Self-erasing ring shape blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85202691U true CN85202691U (en) | 1986-07-16 |
Family
ID=4798445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85202691 Expired - Lifetime CN85202691U (en) | 1985-06-29 | 1985-06-29 | Self-erasing ring shape blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85202691U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332045A (en) * | 2013-06-14 | 2013-10-02 | 张更生 | Dust-free blackboard |
| CN104802571A (en) * | 2015-04-07 | 2015-07-29 | 河南科技大学 | Dust-free blackboard capable of realizing automatic wiping |
-
1985
- 1985-06-29 CN CN 85202691 patent/CN85202691U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332045A (en) * | 2013-06-14 | 2013-10-02 | 张更生 | Dust-free blackboard |
| CN104802571A (en) * | 2015-04-07 | 2015-07-29 | 河南科技大学 | Dust-free blackboard capable of realizing automatic wiping |
| CN104802571B (en) * | 2015-04-07 | 2016-08-03 | 河南科技大学 | A kind of dust-free blackboard that can realize automatic erasing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103950320B (en) | A kind of rolling type white board | |
| CN107839379A (en) | The practical small blackboard of one kind teaching | |
| CN210526119U (en) | Teaching aid for information and computer science | |
| CN108407501A (en) | A kind of electronic blackboard with automatic erasing function | |
| CN108248251A (en) | A kind of adjustable type blackboard for blackboard newspaper of imparting knowledge to students | |
| CN114639271A (en) | Interactive display equipment is used in course teaching of using writing | |
| CN85202691U (en) | Self-erasing ring shape blackboard | |
| CN85105081A (en) | Rotary-type automatic erasing blackboard | |
| CN202293891U (en) | Controllable lifting automatic dust-removing blackboard | |
| CN214984498U (en) | Automatic cleaning device of touch interactive blackboard | |
| CN207044996U (en) | A kind of automatically cleaning teaching white board | |
| CN2778580Y (en) | Automatically erasing dust-free black board | |
| CN2355892Y (en) | Belt circulation blackboard | |
| CN202952717U (en) | Modified blackboard | |
| CN2344188Y (en) | Automatic turning dust-removing blackboard | |
| CN2122738U (en) | Enclosed full-automatic erasing dustless blackboard | |
| CN2032551U (en) | Rotary dust-free blackboard | |
| CN204870245U (en) | Teaching is with chalkboard eraser that can inhale chalk dust automatically | |
| CN2288849Y (en) | Crawler-type blackboard | |
| CN214606789U (en) | Novel teaching blackboard | |
| CN2356864Y (en) | Self-erazing blackboard | |
| CN2422147Y (en) | Erasing-free dustless blackboard | |
| CN218054671U (en) | Interactive intelligent blackboard | |
| CN219028979U (en) | Writing board | |
| CN2388055Y (en) | Full-automatic blackboard-cleaning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |