CN2079574U - Roll type blackboard wiper - Google Patents

Abstract

The utility model relates to a rolling type blackboard eraser, comprising a box cover and a box body in which a brush bristle rolling drum is arranged. Dust collecting grooves are respectively opened on the box body on both sides of the rolling drum, and baffle blocks on both the left and right small ends of the rolling drum and baffle plates on both the left and right sides of the box body can make the rolling drum positioned; in the process of erasing a blackboard, because of the movement of the rolling drum, the dust is winnowed up and floats into the dust collecting grooves on both sides of the box body along with airflow; in order to improve dust collecting effect, the box cover can be provided with a hair brush which is contacted with the brush bristle on the rolling drum all the time. The utility model has the advantages of good dust collecting effect, easy fabrication, low cost and easy use, and can be used for wiping the dust on blackboards, windows and plate surfaces; the rolling type blackboard eraser has great popularizing value.

Description

Roll type blackboard wiper

The utility model relates to the brush based article, especially by the blackboard pattern of cylinder with band dust collection groove.

In existing technical field, common employed blackboard pattern owing to there is not a kind of dust collecting, appoints dust to fly upward everywhere in wiping the examination process, has both polluted surrounding environment, influences people's health again; Though the blackboard pattern that has has dust collecting, its structure is too complicated, and corresponding manufacturing cost also improves.

Now designed a kind of roller-type blackboard pattern that has dust collecting, the special the utility model that proposes.

Concrete structure of the present utility model is: it comprises that lid 1 is as Fig. 1, shown in Figure 5, up and down both sides have dust collection groove 8 ', 8 box body 2, the baffle plate 7 of box body 2 left and right sides and the block 6 of box body 2 left and right sides ', 6 snap in plain bearing housing 3, be that two projections 10 on the plain bearing housing 3 snap in respectively in the groove at position under baffle plate 7 sides, two grooves 11 on the plain bearing housing 3 snap in respectively block 6 ', in 6 end faces and be positioned, as shown in Figure 3, the band bristle is (as using wool felt, foamed plastics) cylinder 4 ', two small end faces of cylinder of 4 are placed in respectively on the semi-circular groove of left baffle 7, and two mounting holes formation matched in clearance of passing plain bearing housing 3, cylinder 4 ', box body 2 bottom surfaces should be slightly protruded on 4 the face of cylinder.As Fig. 2, shown in Figure 4, cylinder 4 ', about 4 two small ends have block.

Description of drawings:

Fig. 1, a kind of roller-type blackboard pattern structure principle chart;

Fig. 2, one of position in plain bearing housing bore, the cylinder small end face of cylinder;

The A-A cutaway view of Fig. 3, plain bearing housing;

Fig. 4, the cylinder small end face of cylinder in plain bearing housing bore the position two;

Fig. 5, another kind of roller-type blackboard pattern structure principle chart;

The upward view of Fig. 6, lid.

Be embodiment of the present utility model below, provide details of the present utility model by description to embodiment, in roller-type blackboard pattern wiping process, during as (or the upwards) motion to the right of blackboard pattern, cylinder rotates, under the effect of frictional force, two small end faces of cylinder of cylinder 4 rely on the left side and can continue rolling along the mounting hole of plain bearing housing 3, as shown in Figure 2, roll 4 simultaneously ' rely on the left side, because cylinder 4 ' about the block of two small ends on the small end end face be projection 5 ', by the boss 9 of the block 6 ' medial surface of left and right sides upper end ' block, as shown in Figure 1; Or cylinder 4 ' about the block of two small ends on the small end face of cylinder be projection 12 ', blocked by the through hole side that has on the block 6 ' side of the left and right sides, can not roll; Otherwise, when (or the downwards) motion left of roller-type blackboard pattern, cylinder rotates, under the frictional force effect, roll 4 ' two small end faces of cylinder rely on the right and can continue along the mounting hole of plain bearing housing 3 and roll, as shown in Figure 4, on the right of while cylinder 4 relies on, projection 5 is blocked by the boss 9 of block 6 medial surfaces of left and right sides upper end, as shown in Figure 5; Or about 4 two projections 12 of cylinder are blocked by the through hole side that has on block 6 sides, can not roll.In wiping process repeatedly, drum movement, dust is kicked up, with the air-flow effect float towards the dust collection groove 8 of box body both sides about in the of 2 ', in 8, in order to improve the effect of control of dust, as shown in Figure 6, at the two ends at lid 1 center an axle bed 13 is arranged respectively, insert in the axle bed 13 hairbrush 12 also fixing, the bristle top of hairbrush 12 should surpass cylinder 4 ', 4 axial plane, and with cylinder 4 ', bristle on 4 (as with wool felt, foamed plastics) remains and contacts so that rolling barrel at any time 4 ', the dust on 4 bristles.If dust collection 8 ', 8 inner products have expired dust, can open the lid 1 that matches with box body 2 and clear up.

The utility model compared with prior art its advantage is: collect the effect of dust, easy to manufacture, cost is low, and is easy to use, and the dust on erasable blackboard, door and window and the plate face has the value of popularization very much.

Claims (4)

1, a kind of roller-type blackboard pattern, it is characterized in that: comprise lid [1], both sides have dust collection groove [8 '] up and down, [8] box body [2], the block [6 '] of the baffle plate [7] of box body [2] left and right sides and box body [2] left and right sides, [6] snap in plain bearing housing [3] between, the cylinder [4 '] that has bristle, [4] two small end faces of cylinder are placed in respectively on the semi-circular groove of left baffle [7], and two mounting holes that pass plain bearing housing [3] form matched in clearance, cylinder [4 '], [4] box body [2] bottom surface, cylinder [4 '] should slightly be protruded in the face of cylinder, [4] two small ends have block about.

2, roller-type blackboard pattern according to claim 1, it is characterized in that: the block of two small ends is projection (5 '), (5) on the small end end face about cylinder (4 '), (4), and there are boss (9 '), (9) in the block of the left and right sides (6 '), (6) medial surface upper end.

3, roller-type blackboard pattern according to claim 1, it is characterized in that: the block of two small ends is projection (12 '), (12) on the small end face of cylinder about cylinder (4 '), (4), has through hole on the block of the left and right sides (6 '), (6) side.

4, according to claim 1 or 2 or 3 described roller-type blackboard patterns, it is characterized in that: respectively there is an axle bed (13) at the two ends at lid (1) center, insert in the axle bed (13) hairbrush (12) also fixing, the bristle top of hairbrush (12) surpass cylinder 4 ', 4 axial plane, and with cylinder 4 ', bristle on 4 remains and contacts.

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