CN2243987Y

CN2243987Y - Automatic dust-free blackboard

Info

Publication number: CN2243987Y
Application number: CN 95220585
Authority: CN
Inventors: 周正友
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-22
Filing date: 1995-09-22
Publication date: 1997-01-01
Anticipated expiration: 2005-09-22

Abstract

The utility model provides an automatic dustless blackboard. Blackboard faces with napping surfaces are connected to form a track shape and are supported by an upper wheel drum and a lower wheel drum which are arranged on a blackboard frame, the upper wheel drum and the lower wheel drum are respectively connected with inverted wheel type gear wheels of one ends of an upper spring and a lower spring, and the inverted wheel type gear wheels are connected with a gear wheel of a blackboard brush simultaneously. One side of the blackboard frame is provided with a stopping clamp which controls the lifting of the blackboard faces. The utility model uses the rotation of springs to driver the wheel drums, the blackboard faces and the blackboard brush to rotate. The track type blackboard faces are shuttled in a circling way. The blackboard brush performs self erasing operation simultaneously. The utility model has the advantages of self erasion, no dust, time saving, labor saving, convenient use and operation, large storage capacity, repeated utilization of writing contents, etc.

Description

Automatic dust-free blackboard

The utility model relates to a kind of Automatic dust-free blackboard with circulating type plate face.

In, the normally used blackboard of primary school, have that the plate face is fixed, a turnover plate type etc., its deficiency is: during use, need often wipe blackboard, bring many inconvenience to teaching, chalk dust pollutes the classroom environment health, and the teacher says class hour, blocks student's sight line easily, influences student's notes.

The utility model provides a kind of self-erasing dust-free, and is time saving and energy saving, uses Automatic dust-free blackboard easy and simple to handle.

The utility model by outer cover (effect be decorate, dustproof), grillage (effect is the fixed head heart), the plate heart (as writing), power set, wipe device, adjusting device (adjustable plate face degree of tightness), control device (the control panel face freely rises), storage device etc. certainly and form.Its technical scheme is: the plate face of surface galling connects into O word Track Type, and by the upper and lower wheel hub support that is contained on the grillage, upper and lower wheel hub is connected with the wheeled gear that falls of upper and lower winder one end respectively, the wheeled gear that falls is connected with scrubbing brush again simultaneously, and the folder that stops of control panel face rising is housed in blackboard framework one side.The other end of winder has the clockwork spring handle, after epipodium strength, clockwork spring will stretch, and rotate in a counter-clockwise direction, by falling wheeled gear driven wheel hub rotation, when wheel hub rotates, the plate face will be done and rise rotate, and move on demand for making the plate face, one side adorn a control device (stopping folder) at blackboard, block the plate face by it, make it as required to rise and stop.Being rotated counterclockwise of winder, drive wheel hub one end gear, be contained in the blackboard back side the scrubbing brush gear turning clockwise, thereby driven plate face and scrubbing brush motion, and plate face and scrubbing brush are moved in the opposite direction, help scratch like this.In order to improve the scratch effect, the axle of scrubbing brush is installed on the support of a circular arc opening, and support is fixed on the grillage, between grillage and scrubbing brush axle a tension spring is housed, and purpose is to make scrubbing brush close adhesion plate face.The brush body on scrubbing brush surface is a spirality, fixedly form on the scrubbing brush axle by the certain rang ring in brush interval, if brush is aging, only need change new brush, scrubbing brush promptly can use again, can adorn an arrangement of clutch on the scrubbing brush axle, when writing on the blackboard need store, can make scrubbing brush leave the plate face, to store the writing on the blackboard writing.Screw type scrubbing brush can avoid chalk dust ash end to be clipped in the scrubbing brush and influence removes the mark effect.Useful so that the wheel hub length travel in the last wheel hub left and right sides, with the adjusting device of adjustable plate face degree of tightness.Skid to prevent that the plate face is loose.

The utility model utilizes theory of mechanics, and the plate face of crawler belt pattern is around coming and going, and twice are contained in blackboard behind from wiping device, when clockwork spring rotates, drive wheel hub, plate face and scrubbing brush and rotate in the opposite direction, finish automatic motion and wipe work certainly.

Fig. 1 is the utility model plate core structure schematic diagram;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is an outside drawing of the present utility model.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Among Fig. 1, the plate face 1 of surface galling connects into O word Track Type, and by upper and lower wheel hub 3 supports that are contained on the grillage 2, gear 3 '-1,3 '-2 of upper and lower wheel hub 3-1,3-2 are not connected with fall wheeled gear 5-1, the 5-2 of the clockwork spring 4-1 corresponding with it that is located at the blackboard back side, 4-2 one end, the wheeled gear 5 that falls is connected with gear 7-1, the 7-2 of scrubbing brush 6-1,6-2 axle again simultaneously, 8-1,8-2 are the clockwork spring handle, stop to press from both sides 9 what blackboard framework one side was equipped with that the control panel face rises.The adjusting device 10 of adjustable plate face degree of tightness is equipped with at the two ends of last wheel hub, and adjusting device 10 is bicycle very heavy roughly the same, and when the nut of adjusting device 10 rotates to clockwise direction, plate face 1 will be tightened, otherwise just loosening, and is loose and skidding occurs to avoid the plate face.

Among Fig. 2,1 is the plate face, and 2 is grillage.Upper and lower wheel hub 3 falls wheeled gear 5 with clockwork spring 4 one ends that are located at the blackboard back side respectively and is connected, the wheeled gear 5 that falls is connected with the gear 7 of scrubbing brush 6 again simultaneously, rotate by gear driven wheel hub 3, scrubbing brush 6 by clockwork spring 8, the axle of scrubbing brush 6 is installed on the fixed support 11 of a circular arc opening, support 11 is fixed on the grillage 2, its circular arc opening is concentric with the wheel hub center of circle, one tension spring 12 is housed between grillage 2 and scrubbing brush axle, purpose is under the situation of scrubbing brush wearing and tearing, can make its close adhesion plate face by extension spring, guarantee to remove the mark effect.On 6 of scrubbing brushes, can adorn an arrangement of clutch, when writing on the blackboard need store, make scrubbing brush can leave the plate face, store the writing on the blackboard writing.Daughter board 14 is housed in the daughter board grillage 13, is provided with slide rail in the daughter board grillage 13, so that flexible, effect is to add the area that the university student drills plate, can the blackboard main body each side establish one, the time spent pulls out, the time spent can not push away and contract in main body, can establish simultaneously from wiping device yet.

Among Fig. 3,8 is clockwork spring, by turning clockwise, the clockwork spring handle is contained in an end of winder, and the other end cogged 5,2 of axle is a grillage, 9 for stopping folder, the gear 3 that falls wheeled gear 5 and wheel hub 3 of clockwork spring ', the gear 7 of scrubbing brush 6 is meshed, drive wheel hub and scrubbing brush and move.Scrubbing brush 6 is a spirality, and on the scrubbing brush axle and make, screw type interval can avoid dust to be clipped in the scrubbing brush and influence removes the mark effect by the certain at interval distance of brush 14.3 is wheel hub.

Among Fig. 4,1 is the plate face, and 15 is blackboard framework (outer cover), rises and decorates dustproof effect, and 9 for stopping folder, and 8 is clockwork spring.There is storage dirt device 17 the blackboard lower end, draws back arm-tie and can remove the chalk dust that accumulates in wherein.14 is daughter board.16 is seal groove (effect: envelope dirt), be enclosed within plate face limit.

The utility model compared with prior art has prolonged and usefulness, saves time, laborsaving, certainly wipes No dust pollution, easy to use, simple to operate, reserves are big, can recycle written contents, Easily aging parts are convenient to change. Produce the advantages such as simple, easy to make.

Claims

1, a kind of Automatic dust-free blackboard, the plate face (1) that comprises plate face (1), grillage (2), blackboard framework (15), surface galling connects into Track Type, and by upper and lower wheel hub (3) support that is contained on the grillage, it is characterized in that: upper and lower wheel hub (3) is connected with wheeled gear (5) gear that falls that is contained in blackboard upper and lower clockwork spring one end behind respectively, the wheeled gear (5) that falls is connected with the gear (7) of scrubbing brush (6) again simultaneously, stops to press from both sides (9) what blackboard framework (15) one sides were equipped with that the control panel face rises; The axle of scrubbing brush (6) is installed on the support (11) of a circular arc opening, and a tension spring (12) is housed between grillage (2) and scrubbing brush axle; Useful so that the wheel hub length travel in wheel hub (3) left and right sides, with the adjusting device (10) of adjustable plate face degree of tightness.

2, blackboard as claimed in claim 1 is characterized in that said scrubbing brush (6) is that a brush (7) keeps at a certain distance away, shape ground forms in the shape of a spiral on the scrubbing brush axle.

3,, it is characterized in that to adorn an arrangement of clutch on the said scrubbing brush axle as claim 1,2 described blackboards.

4,, it is characterized in that said its circular arc opening of support (11) with circular arc opening is concentric with wheel hub (3) center of circle as claim 1,2 described blackboards.