CN2386969Y - Large width and automatically wipping dual-purpose blackboard - Google Patents

Abstract

The utility model relates to an automatically wiping dual-purpose blackboard with a large width. A toggling column 2 which is firmly fixed to a driving wheel disc 1 and a toggling fork wheel 3 are driven to carry out equidistant rotations driven by a driving wheel disc 1; a coaxial toggling belt gear wheel 4 is driven by the driving wheel disc 1 simultaneously to toggle a special made blackboard belt 5 to move reciprocally as required. A back buckram cushion board is particularly designed, so as to prevent the board surface of the blackboard from hard writing when writing or drawing. A board wiper 9 can leave a board surface to retain original traces by lifting the board wiper 9 upwards when writing contents need to be reserved; inversely, the board wiper is pressed, and the writing trace can be wiped. The blackboard can lift and move automatically and can be cyclically used. A most comfortable writing posture can be kept without lifting the arm, raising the head, bending down and bending the leg when writers are writing. Only writing is needed without wiping, and the dust does not pollute the environment.

Description

Large size automatically-erasing type two-purpose blackboard

The utility model relates to a kind of blackboard, and a kind of expert shakes and driven by motor is wiped Infinite Cyclic belt blackboard automatically.

Existing blackboard is a kind of to be the cement write with common chalk, wooden, the blackboard of making ground, frosted glass system, and another kind is a metal covering blackboard of writing usefulness with magnetic chalk.

Cement, wooden blackboard surface are brushed with the normal blackboard lacquer, needed in general 1 year once to coat with lacquer from new brush, life-span is very short, the front and back two layers of one-sided overlapping lift blackboard of frosted glass system, Glass breadks easily, and plate body is very heavy is write when full when last, need pull jack formula pulley and just can make its rising, write back one again and also can lifting be used alternatingly.

More than two kinds of blackboards, have during preceding a kind of wiping board that a large amount of dust are horizontal to fly to pollute the space, a kind of blackboard in back is with magnetic chalk cost height, content written must just can be wiped dust with magnetic blackboard eraser, can reduce flying upward of dust.Two kinds of blackboard weak points are that plate face height has certain limitation, must face upward head when writing in the top, lift arm, when writing in its lower end, must bend over, bend one's legs, and bring inconvenience to the writer, and contaminated environment, influence people's physical and mental health.

The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of large size automatically-erasing belt blackboard is provided, the sheet material of its plate face is with neither too hard, nor too soft rubber strip, intermediate course is formed a jointless tubular band by the metal thin skin, in two equal diameters arranged and roll and driven axle rolls with long driving shaft, the band that the capable stretching band tube that spaces out of diaxon rolling, this moment axle roll both sides is parallel to the both sides that axle rolls, and is the plate face of soft belt type face blackboard.The end that driving shaft rolls is equipped with remote-controlled clockwise and anticlockwise motor and manual rocking handle, rolls when making diaxon roll suitable, de-rotation when acting on axle, and the plate face comes and goes circulation thereupon and moves, for this reason: but Infinite Cyclic, the writing surface infinity of plate face.

The blackboard eraser of large size automatically-erasing type two-purpose blackboard described in the utility model is mounted in the lower end of blackboard, and its fabric width equates with blackboard left and right sides fabric width, is equipped with handle on the blackboard eraser, on lift and can leave the plate face, down by being adjacent to the plate face.

Be equipped with dust receiving bucket below the described large size automatically-erasing type two-purpose blackboard of the present utility model, blackboard eraser, there is dust cover the upper edge of bucket, can prevent that dust from splashing.

Above-described the utility model is wiped large format belt Double-purpose blackboard automatically, but distribution source remote-control motor rises row automatically, but the actuating rocking handle does not rise row when having electricity, need to wipe written contents and press blackboard eraser at present, the dust of wiping directly falls into to connect in the dust bucket and can not fly upward, make writer's erectile problem arm, do not bend over, protect the posture of writing of the most comfortable forever, be not subjected to the influence of dust.Be not subjected to the influence of dust.

Below in conjunction with accompanying drawing large size automatically-erasing type two-purpose blackboard described in the utility model is described in further detail:

Fig. 1, be the embodiment annexation schematic diagram of large size automatically-erasing type two-purpose blackboard described in the utility model.

Fig. 2, be the plane of structure structural representation of large size automatically-erasing type two-purpose blackboard described in the utility model.

In Fig. 1, the embodiment annexation schematic diagram 1, but be the small-sized slowspeed machine of rotating, (alternating voltage 220v, power 100w).26 are two sections shakes the control receiving key.Dial 2 is installed on 1 the axle, and reversed column 3 firmly is contained on 2, and fork wheel 4 and 3 coincide together, and rolling bearing 17 and 4 is installed in driving shaft successively and rolls on 20, pin 21 with 4 pins extremely, turning belt gear wheel 5 and 20 concentric one.The intermediate course of rubber strip 6 has (0.1-0.3mm) metal skin and the thick blackboard surface of the stacking 3-5mm of being bonded into of rubber strip.(as Fig. 2,22 is that metal skin, 23 is rubber strip).The length of blackboard can be the same with normal blackboard length wide, but also packet assembling.Both sides are equipped with the equidistant chain type hole 27 that matches with gear 5, and driven axle rolls 7 and rolls the 20 isometric parallel certain distances that draw back with driving shaft, and stretching 6 makes its flat surfaced, and 8 is blackboard back pad liner plate, prevents soft recessed when writing.9 is the skeleton of blackboard, and spongy blackboard eraser (length with the plate face left and right sides wide equating) 10 is installed in blackboard bottom with shell 24 sticking dead (as Fig. 2), handle 18 is housed on 24.11 is 24 turning cylinders, and the dust that has guard shield connects the bucket 12 following outsides that are installed in blackboard eraser 10 and prevents dust from flying.Little brace 15 is rotating shaft with pillar 28, and under the effect of small extension spring 16, location blackboard eraser 10 can be promptly, can from.Annexation in sum is described in further detail explanation again to the utility model embodiment:

During installation, with 1,17,26 are installed in respectively on 9 the same side plane, 8 are fixedly mounted on 9, to be adjacent to and can to make 6 to move the keeping parallelism degree and be advisable with 6 back sides, transfer 19 and make 20,7 in a straight line, and parallel stretching 6, make its flat surfaced, twist then and firmly decide screw 18, one end of little brace 15 is installed on 11 and (can rotates), the other end is installed on the pillar in 9 outsides (can rotate), one end of small extension spring 16 is installed in 15 outside, and becomes 10 degree angles with 15 center lines, and the other end is installed on the skeleton, the locking ball that spring is housed in inciting somebody to action at last is installed on 27,6 move up and down in the time of can preventing to write, and the blackboard left side removes 1,2,3,4,26,21 outer all the other with right side symmetry installation, installation method is identical, 29 blackboard surface moves when having a power failure hand take turns be installed on 9 with 2 at grade, belt transmission mutually.

Described utility model large size automatically-erasing type two-purpose blackboard: soft recessed for preventing plate face 6 when the writer uses, ad hoc meter pad plate 8 linings are at the clipboard back side, and height is write in the best in the position, 8 high up and down be 50cm.When the best is write the zone when having write, open and shake the control switch, 26 start working, and connect small machine 1, and just change as requested or reverse, 1 rotation drives and is fixed on 3 on 2 and stirs 4 and do equidistant rotation, 20 rotate with 4, power is passed to 5,5 stir 6 by 27 and do equidistant moving, distance on 4 between prong equates with 3 girth, according to the length of the controlled amount system rotation time of 6 mobile ranges.When written contents need keep, can up lift 13, at this moment 15 under 16 effect, make blackboard eraser leave the plate face, down by 13, opposite with it if when written contents need not keep, blackboard eraser is adjacent to the plate face and wipes dust and fall into 12 li of dust buckets, and whole process finishes.

In sum, the utility model in use, the writer only need not wipe with writing, not bend over, carry arm not, but plate face Infinite Cyclic is used, and capacity is big, the comparable long-hand that writes is big, reduces many fatigues simultaneously and alleviates student eyesight fatigue, free from environmental pollution, useful physical and mental health.

Claims (3)

1, a kind of large size automatically-erasing type two-purpose blackboard, comprise initiatively thumb wheel, the equidistant fork wheel that rotates of work, the driving shaft of parallel up and down stretching band tube blackboard (intermediate course has the rubber strip of metal skin 0.1-0.3mm) rolls, driven axle rolls, and driven axle rolls down the outside, have one with the isometric blackboard eraser in the blackboard left and right sides, form by the dust receiving bucket of band guard shield under the blackboard eraser, it is characterized in that: driving shaft rolls with driven axle and rolls equal diameters (about 100mm) and isometric about in the special band tube, at grade, parallel stretching band tube is parallel to each other the two sides and can circulates.

2, according to claim 1 described significantly automatically-erasing type two-purpose blackboard, it is characterized in that: lower end, belt plate face outside has one isometric with the plate face left and right sides, and the blackboard eraser of wide 100-200mm is equipped with handle on the blackboard eraser.Make blackboard eraser can on lift or down by.

3, according to claim 1 described large size automatically-erasing type two-purpose blackboard, it is characterized in that: be equipped with the dust receiving bucket of band guard shield under the blackboard eraser, can demolition.

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