CN2341808Y

CN2341808Y - Full automatic blackboard

Info

Publication number: CN2341808Y
Application number: CN 98243164
Authority: CN
Inventors: 陈奇
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-15
Filing date: 1998-10-15
Publication date: 1999-10-06
Anticipated expiration: 2008-10-15

Abstract

The utility model relates to a full automatic blackboard, particularly a movable writing blackboard written by chalks. The utility model mainly comprises a main frame 4, an annular writing tape 6 arranged on the main frame, a motor 2, a driving rolling roller and tension rolling roller which are used, a transmission device which is made of a supporting roll and a pressing roll and the transmission device can drive the annular writing tape 6, and the in addition, the utility model also comprises brush roll. The rotary direction of the brush roll is opposite to the moving direction of the annular writing tape. The brush roll is pressed and erased to a face with handwriting, the lower part of the brush roll is provided with a dust collecting groove 28, and edges of sealing plates 24, 25 and 5 which are contacted with the periphery of the annular writing tape are provided with hair sealing tapes. The annular writing tape is moved as required to write continuously when the utility model is used. The utility model has the advantages of no need of erasing by wasting time, time saving and no dust.

Description

Fully automatic blackboard

The utility model relates to a kind of movable writing blackboard, and particularly a kind of is the movable writing blackboard of the instrument that writes with chalk.

Writing blackboard is the common tool of imparting knowledge to students and writing, present movable writing blackboard generally has convertible, i.e. blackboard is write in activity framework, in establish the blackboard of 360 ° of rotations of an energy, the movable writing blackboard that another kind is used for the classroom, be to be one group, connect that tightrope is by one group of pulley with tightrope with two big blackboards, hanging up back two plates can parallelly up and down mutually move, pandect has been write one side and has upwards been pushed away, then former up one move down, make the capacity that writes to increase, make things convenient for student's record.Write word capacity but above-described movable writing blackboard only solves to increase, when wiping writing, still to cause dust from flying, unhealthful and environment, and wipe word and taken the regular hour, operating efficiency is lower.

The purpose of this utility model provides a kind of fully automatic blackboard, and the blackboard surface that writes is moved and the erasing writing on demand automatically, also can prevent dust from flying simultaneously, saves time, and has overcome all shortcomings of traditional blackboard.

Fully automatic blackboard of the present utility model, include tetragonal main frame and place the movable board in the framework and place dust collecting trough below the movable board, wherein movable board is the annular band that writes, be enclosed on a pair of transmission rolling roller in the main frame, and being tensioned into similar conveyer belt, it also comprises one, and to drive the annular conduction transmission device of band and direction of motion and the annular direction of belt travel of writing of writing opposite and be close to annular and write to be with and need wipe writing brush word device simultaneously.

In the write behind of band writing surface of annular cramp bar and the liner plate link to each other with main frame is set, zone face is stablized.

Described wiping word device can be a length and the annular close brush of bandwidth that writes rolls, the external cylindrical surface that brush rolls is enclosed with reticulate body, can easily wipe annular write with on writing.

Described transmission device is a chain and sprocket driving device that drives by motor and shaft coupling, including brush rolls, idler pulley, initiatively roll roller, nip drum, roller and sprocket wheel chain are rolled in tensioning, they support with main frame respectively, place in the main frame, wherein brush rolls, idler pulley initiatively rolls roll end corresponding sprocket wheel, makes power transmission shaft, annular write band just cover be pressed in and initiatively roll roller and tensioning is rolled on the roller, roller is rolled in tensioning can regulate between two rollers centre-to-centre spacing with parallel, regulate the write tensioning of band of annular, and idler pulley places the annular band writing surface back on one side of writing, and is used to hold up writing surface, and nip drum is and initiatively roll roller and cooperate and compress the annular band that writes, and brush rolls to cooperate to make to brush to roll with idler pulley can be close to the one side of wiping writing.

Front at main frame is provided with the band that studs with velvet-like thing that closely contacts with the annular periphery that writes with the limit, and totally enclosed type can be adopted in the back side that is pressed in main frame in addition, causes dust from flying to come out when preventing to brush the round brush word.

A kind of improved form of the present utility model is that the spiral conveying mechanism that can arrange along the flute length direction is set in dust collecting trough, a dust-collecting box is arranged below the delivery chute end, when spiral conveying mechanism turns round, the dust that drops in the dust collecting trough is shifted onto in the dust-collecting box, and dust-collecting box can be pulled down cleaning.

The utility model is owing to can make the annular band that writes resemble on demand and do circulation as the conveyer belt and move, annular is write and is with motionlessly when writing surface writes, and writes and finishes Push switch, motor just drives the annular band that writes, annular is write and is with motionlessly when writing surface writes, and writes and finishes Push switch, motor just drives the annular band that writes, by being arranged at round brush in the framework the writing erasing, change the band that writes of erasing, continue and write.Owing to be provided with the velvet-like thing of sealing at the periphery of the band that writes, and the employing close encapsulation framework back side, dust can not overflow, so can prevent dust pollution again, if in dust collecting trough, be provided with spiral conveying mechanism, just can be integrated in the dust-collecting box and clean wiping dust down, thus of the present utility model entirely oneself blackboard automaticity height, clean, save time and have advantages such as simple in structure, easy to use.

Be an embodiment of the present utility model below, be described in detail as follows:

Fig. 1 is the front schematic view of the utility model fully automatic blackboard;

Fig. 2 is Figure 1A-A direction cutaway view;

Fig. 3 is Figure 1B-B direction cutaway view;

Fig. 4 is Fig. 1 C-C direction cutaway view;

Fig. 5 is that brush rolls the warp-wise cutaway view.

Shown in the figure, the utility model comprises that main frame 4 and annular are write and is with 6, dust collecting trough 28 in below that annular is write and is with, annular is write and is with the behind of writing surface that cramp bar 21 and the liner plate 20 that is connected with main frame 4 arranged, annular is write and is with 6 to be enclosed within and initiatively to roll roller 16 and open on the roller 11, and by compressing near the nip drum 15 that initiatively rolls roller 16, hold up the writing surface that annular is write and is with by the idler pulley 13 that rolls roller 11 near tensioning, and roll roller 11 and the annular writing surface that writes and be with of idler pulley 13 picking-ups in tensioning, brush is set rolls 12 and roll opposite between roller 11 and the idler pulley 13 in tensioning, near the band that writes, the bearing block 9 that the roller two ends are rolled in tensioning is to regulate with screw rod, be fixed in the lower frame, remaining rolls roller and supports with the left and right sides edge of main frame 4, bearing 8 is fixed on the relevant position of edge, the main electric machine support 1 that is provided with under the side of main frame 4, loading onto motor 2 above rolls an end of 12 by shaft coupling 3 and brush sprocket wheel I 17 is housed, by chain I 18, be connected with the sprocket wheel II 19 of idler pulley 13 with end, sprocket wheel II 19 is duplex chain wheels, can cooperate two chains simultaneously, so connect sprocket wheel II 19 and initiatively roll the sprocket wheel III 23 of roller 16 with chain II 22 chains again with end, a chain tensioning device 7 is housed on the chain II 22, roll 12 when rotating when driven by motor brush is moving, by the chain transmission, annular is write be with 6 to move up, at this moment brush rolls 12 turn to just in time to write with annular and be with 6 moving directions opposite, and the switch 26 of a control motor is set in the appropriate location of main frame 4, is convenient to operation.

In addition, periphery at main frame 4 is provided with shrouding 24,25 and 5, be enclosed in respectively on the front of main frame 4, left and right, following, and write limit that the band periphery contact of shrouding and annular looks like to stud with the band of velvet-like thing, sealing up afterwards in the back of main frame 4, shrouding makes its sealing.

Another kind of improved form is spiral conveying mechanism 10 of increase in the dust collecting trough 28 below above-mentioned fully automatic blackboard, the one end is provided with sprocket wheel and brushes the sprocket wheel chain drive of rolling, the sprocket wheel duplex chain wheel that this moment, brush rolled, the below, groove end of helical feed direction is provided with removable dust-collecting box 27.

Certainly, wiping word device wherein can also adopt in the write brush brush of tape loop at the back side that has writing of annular, the erasing writing moves up, perhaps adopt the pressing plate of the band brush be fixed on the main frame back side to push down annular and write and have the back side of writing, utilize the write fast moving ground erasing writing of band of annular.In addition, the spiral conveying mechanism in the dust collecting trough also can replace with scraper plate.The annular of above-described fully automatic blackboard is write to be with and can be adopted traverse cycle to move, and brush rolls can be in the arbitrary position of one side of wiping writing.Blackboard can be hung on the wall or erect all can on the ground.

Claims

1. fully automatic blackboard, including tetragonal main frame places movable board in the main frame to place dust collecting trough below the movable board, it is characterized in that: described movable board is the annular band that writes, the a pair of transmission that is enclosed in the main frame is rolled on the roller, and is tensioned into similar conveyer belt; Also comprising one, to drive the annular transmission device of band and direction of motion and the annular direction of belt travel of writing of writing opposite and be close to annular and write to be with and need wipe writing brush word device simultaneously.

2. a kind of fully automatic blackboard according to claim 1, it is characterized in that: described transmission device is a chain and sprocket driving device, include that brush rolls, idler pulley, initiatively roll roller, nip drum, roller and sprocket wheel wheel bar are rolled in tensioning, they support with main tank bracket respectively, place in the main frame, wherein brush rolls, idler pulley, initiatively rolls roll end corresponding sprocket wheel is arranged, make power transmission shaft, the annular band that writes just is enclosed within and initiatively rolls roller and tensioning is rolled on the roller, and nip drum and tensioning are rolled roller and write by annular and be with drive, except that pressure roller, all the other roll the unanimity that turns to of roller.

3. be characterised in that with 2 described a kind of fully automatic blackboards according to claim 1: described annular is write and is with the behind of writing writing surface that cramp bar and the liner plate that links to each other with main frame arranged.

4. a kind of fully automatic blackboard according to claim 1 is characterized in that: described brush word device is that the length brush close with the width of the annular band that writes with the ring degree rolls, and the external cylindrical surface that brush rolls is enclosed with reticulate body.

5. fully automatic blackboard according to claim 1 is characterized in that: in the front of main frame, periphery is provided with the band that studs with velvet-like thing that writes and be with periphery closely to contact with annular, adopts totally enclosed type at the main frame back side.

6. fully automatic blackboard 1 according to claim 1 or 5 is characterized in that: also have the spiral conveying mechanism that can arrange along the flute length direction in the dust collecting trough, there is a dust-collecting box below of delivery chute end.