CN2354778Y

CN2354778Y - Automatic dust collecting blackboard eraser

Info

Publication number: CN2354778Y
Application number: CN 98205692
Authority: CN
Inventors: 冯江
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-11
Filing date: 1998-06-11
Publication date: 1999-12-22
Anticipated expiration: 2008-06-11

Abstract

The utility model relates to a blackboard eraser. The utility model is characterized in that a bottom edge of a blackboard eraser is provided with a box body which is provided with a bottom hole and is composed of a movable covering board of the upper part of the bottom hole, the box body is provided with rotary shaft trains supported on a left side wall and a right side wall of the box body, each rotary shaft strain is composed of a horizontal shaft, two rolling wheels of two upper ends of the horizontal shaft and a plurality of interval impellers of the middle of the rolling wheels and the box body is also provided with a closed box cover, and therefore, the utility model has the advantages of simple structure and low cost.

Description

Automatic sucking chalk powder blackboard eraser

The utility model relates to a kind of blackboard eraser.

At present, letter written with chalk that traditional blackboard eraser is erased or picture etc., seriously contaminated air influences health, and in the last few years, the someone adopted the electric dust absorption blackboard eraser, still, and complex structure, cost is higher, is difficult to promote the use of.

In view of this, the purpose of this utility model provides a kind of automatic sucking chalk powder blackboard eraser, with the action that erases the board, promotes fan blade and rotates and absorb chalk dust and be stored in the blackboard eraser.

The purpose of this utility model is achieved in that it comprises the blackboard eraser base with several through holes, it is characterized in that: be provided with on the blackboard eraser base band bottom outlet and above the box body that constitutes of removable cover, be provided with the rotating shaft system that is bearing on its left and right sidewall on this box body, this rotating shaft system is made of two rollers at a trunnion axis and last two ends thereof and its middle a plurality of intervals impeller, also is provided with the lid of sealing on the box body.

Be respectively equipped with parallel horizontal straight guide on the bottom outlet both sides diapire of described box body, described removable cover is made up of the flat board of rectangle, overhanging depression bar and stage clip.

Described roller is an elastomeric material.

Owing to adopt such scheme: simple in structure, cheap.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments schematic diagram.

Fig. 2 the utility model exemplary embodiments removable cover open mode schematic diagram.

Among the figure: 1, box body 11, the end 12, straight guide 13, removable cover 131, dull and stereotyped 132, overhanging depression bar 133, stage clip 2, lid 3, blackboard eraser base 4, rotating shaft be 41, trunnion axis 42, roller 43, impeller

Present embodiment comprises that mainly box body 5, lid 2, blackboard eraser base 3 and rotating shaft are 4, as shown in Figure 1, 2, wherein:

Box body 1 is open-topped rectangular case, offer a plurality of rectangle bottom outlets 11 of longitudinal separation on its diapire, on the diapire of bottom outlet 11 both sides of a plurality of arrangements, be respectively equipped with parallel horizontal straight guide 12 (straight guide 12 front ends inwardly stretch out spacing shelves limit) again, and between two straight guides 12, be provided with removable cover 13, this removable cover 13 mainly is made up of flat board 131, overhanging depression bar 132 and the stage clip 133 of rectangle, and the flat board 131 of rectangle places between two straight guides 12; This flat board 131 front ends fixedly connected one overhanging depression bar 132, this overhanging depression bar 132 is bearing in the box body 1 front side cinclides and its termination is exposed at outside box body 1 front side wall; Between (edge that protrudes upward) and box body 1 rear wall, stage clip 133 is set in dull and stereotyped 131 back end edge.

Cover to lid 2 sealings, and also can take off from box body 1 easily at box body 1 top.

Blackboard eraser base 3 is removably to be connected on box body 1 bottom wall outer, also correspondingly offers through hole on this blackboard eraser base 3 with bottom outlet 11 places on box body 1 diapire and is communicated with bottom outlet 11, and this blackboard eraser base 3 can be that undercoat brush, tweed etc. are made, and belongs to prior art.

Rotating shaft is 4 to be made up of a trunnion axis 41, two rollers 42 and a plurality of impeller 43, and wherein trunnion axis 41 is bearing on the left and right sidewall of box body 1; Two rollers 42 are fixedly connected on outer trunnion axis 41 two ends (roller 42 is the dapple rubber wheels of wheel rim) of box body 1 left and right sidewall respectively; A plurality of impellers 43 are fixedly connected on the trunnion axis 41 of bottom outlet 11 tops of corresponding box body 1.

The operation of present embodiment and operation principle:

At first, hand box body 1 and push overhanging depression bar 132, promote flat board 131, compression press spring 133, this moment, bottom outlet 11 was opened, as shown in Figure 2 state; When blackboard eraser base 3 was pressed and touched blackboard surface and move, simultaneously, two rollers 42 rolled on blackboard surface, drove trunnion axis 41 and a plurality of impeller 43 rotates, and formed negative pressure in the box body 1 because the rotation of impeller 43 makes, and chalk dust just enters in the box body 1 from bottom outlet 11; When not erasing the board, hand just unclamps the overhanging depression bar 132 that is pressed, under the effect of stage clip 133, dull and stereotyped 131 cover bottom outlet 11, and the chalk dust that enters in the box body 1 drops in box body 1 diapire, when needing the chalk dust of cleaning box body 1, as long as lid 2 is taken off, chalk dust can be toppled over out.

Claims

1, a kind of automatic sucking chalk powder blackboard eraser comprises the blackboard eraser base (3) with several through holes, it is characterized in that: on blackboard eraser base (3), be provided with the box body (1) that band bottom outlet (11) and top removable cover (13) thereof constitute, be provided with the rotating shaft system (4) that is bearing on its left and right sidewall on this box body (1), this rotating shaft system (4) is by a trunnion axis (41) and goes up two rollers (42) and the formation of a plurality of intervals impellers (43) in the middle of it at two ends, also is provided with the lid (2) of sealing on the box body (1).

2, by the described automatic sucking chalk powder blackboard eraser of claim 1, it is characterized in that: be respectively equipped with parallel horizontal straight guide (12) on bottom outlet (11) the both sides diapire of described box body (1), described removable cover (13) is made up of the flat board (131) of rectangle, overhanging depression bar (132) and stage clip (133).

3, by the described automatic sucking chalk powder blackboard eraser of claim 1, it is characterized in that: described roller (42) is an elastomeric material.