CN2236406Y

CN2236406Y - Dustless box type blackboard

Info

Publication number: CN2236406Y
Application number: CN 96200474
Authority: CN
Inventors: 尤世勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-12
Filing date: 1996-01-12
Publication date: 1996-10-02
Anticipated expiration: 2006-01-12

Abstract

The utility model provides a dustless box type blackboard. The structure is an enclosed box body, the face is arranged by a plurality of blackboard bars in the shape of board bars in the mode that two adjacent blackboard bars have certain clearance. The blackboard face which is composed of the blackboard bars forms included angles of 10 DEG to 35 DEG with a vertical direction; the lower part of the box body is provided with an outlet and a cover plate which can remove the dust conveniently. The utility model is characterized in that the blackboard has no pollution, without energy consumption, the blackboard has simple structure, reasonable structure, low cost, economy and practicality; the price is accepted by general academies.

Description

The box blackboard of no dust pollution

The utility model relates to a kind of educational aid, relates in particular to a kind of blackboard.

At present, the blackboard that generally adopts in the school is the blackboard of a kind of integral body, flat, wooden or frosted glass, the blackboard panel vertical hanging, when wiping chalk writing with blackboard eraser, dust flies upward everywhere, has both endangered the healthy of Faculty and Students, again contaminated environment, caused that in recent years relevant department pays much attention to, thereby, the design of dust-sucking eraser has been arranged, this blackboard eraser dust removing effects still can, but power consumption is bigger, and noise pollution is arranged.

The purpose of this utility model is the box blackboard that proposes a kind of no dust pollution, need not under the situation of any additional source of energy, by original method for deleting, can avoid dust pollution equally.

Design of the present utility model provides as follows, it is a closed box, its front is rearranged with the form that leaves certain interval between the adjacent two blackboard bars by some slab blackboard bars, blackboard surface and vertical direction that described blackboard bar is formed have 10 ° to 35 ° angles, and lower box is provided with outlet and the cover plate that can remove dust easily.The blackboard of this structure does not influence normal writing on the blackboard, in case write word, when wiping with blackboard eraser, the dust deadweight is glided it, in the slit decline cartonning between the blackboard bar.Run up to a certain degree, can open the lower box outlet, remove dust.

In the such scheme, on the described blackboard bar, respectively be provided with below and be beneficial to the chamfering that dust glides.

In the such scheme,, still have rigidity preferably, can in casing, be provided for passive support for making bar shaped blackboard bar when span is big.

In the such scheme, described bottom half is a pyramidal structure, and the chalk powder that helps falling in the casing is gathered, so that discharge.

The utility model has the advantages that: no dust pollution, and energy free consumption, simple and reasonable for structure, cost is not high, and is economical and practical.

Below in conjunction with drawings and Examples, further set forth design of the present utility model.

Fig. 1 is the front view of the box blackboard of no dust pollution;

Fig. 2 is the cutaway view of A-A among Fig. 1;

Fig. 3 is the I portion enlarged drawing among Fig. 1;

Fig. 4 is the II portion enlarged drawing among Fig. 1.

Fig. 1 and Fig. 2 illustrate the structure of blackboard of the present utility model.Referring to Fig. 1 and Fig. 2, the utility model is a closed box 2, casing 2 fronts are by some slab blackboard bars 1, and rearrange with the form that leaves certain interval 4 between the adjacent two blackboard bars, blackboard surface and vertical direction that some blackboard bars 1 are formed have certain angle α, the α angular region is 10 ° to 35 °, and casing 2 bottoms are provided with outlet 21 and the cover plate 3 that can remove dust easily.Bottom half can be designed to pyramidal structure 6.

Referring to Fig. 3, lean on for making chalk powder that deadweight is easier to be fallen in the casing 2, each blackboard bar 1 upper and lower part respectively is provided with chamfering 11.

The material of blackboard bar 1 can adopt existing black frosted glass, also can adopt dark duroplasts, can also be traditional black plank.Adopt the plastic material handling ease, cheap, economical and practical.

Passive support 5 is set in the casing 2, and when span was big, blackboard bar 1 relied on the support 5, or is screwed with support 5, makes that blackboard bar 1 rigidity is better, and blackboard surface is not yielding.

Referring to Fig. 4, the outlet of casing 2 bottoms removing dust and structure of cover plate form can have multiple, can be the outer cover plates that pastes, and cover plate one end is provided with hinge, other end band latch or lock.Also can be provided with slideway 22 in casing 2 bottoms as shown in Figure 4, cover plate 3 can insert from the side or extract out along slideway 22, thus the effect that reaches closed box or take out chalk powder.Cover plate 3 can be a lath long together with blackboard, also can be butt joint in the middle of two, the lath that can extract out from two ends respectively.

Claims

1, a kind of box blackboard of no dust pollution, it is characterized in that a closed box, its front is rearranged with the form that leaves certain interval between the adjacent two blackboard bars by some slab blackboard bars, blackboard surface and vertical direction that described blackboard bar is formed have 10 ° to 35 ° angles, and lower box is provided with outlet and the cover plate that can remove dust easily.

2, the box blackboard of no dust pollution according to claim 1 is characterized in that described blackboard bar above and below respectively is provided with the chamfering that is beneficial to the dust downslide.

3, the box blackboard of no dust pollution according to claim 1 is characterized in that being provided with in the described casing support that supports described blackboard bar.

4, the box blackboard of no dust pollution according to claim 1 is characterized in that described bottom half is a conical bottom.

5, the box blackboard of no dust pollution according to claim 1 is characterized in that the material of described blackboard bar adopts black frosted glass, or dark duroplasts, or plank.

6, the box blackboard of no dust pollution according to claim 1, it is characterized in that it is that lower box is provided with elongated hole that described lower box is removed the outlet and the covering plate structure of dust, and be provided with cover plate can be along its slideway that slips into or skid off, cover plate is the cover plate that can pull out from an end, or cover plate is a cover plate two butt joints, that can pull out from two ends respectively.