CN2272822Y - Chalk eraser - Google Patents

Abstract

The utility model relates to a chalk eraser. Both sides of an upper casing are provided with symmetrical and movable baffles which are inserted in a bracket arranged on a back face of the upper casing, an upper end and a lower end of the casing are provided with slant faces, both ends of a pull rod are connected with the symmetrical and movable baffles, a felt plate is clamped in the upper casing by the pull rod, both sides of the felt plate are provided with grooves, one face of the felt plate is provided with strip-shaped felt, the other face is connected with a foam pad arranged in a lower casing, and a back face of the lower casing is provided with a plurality of semicircle bulges. The utility model has the advantages of simple structure, convenient use and good dust-proof effect.

Description

Chalkboard eraser

The utility model relates to a kind of culture and education articles for use, particularly relates to a kind of chalkboard eraser.

Present widely used chalkboard eraser, mostly be on the plate that rectangle plank or plastics are material and fix many felts, armrest is moving during use makes the chalk writing of blackboard or other body surface be gone by foam, yet, this chalkboard eraser can only adhere to chalk dust seldom in use, most chalk dust flies upward in air or becomes scattered about below the blackboard, not only influences indoor environmental hygiene, and has a strong impact on the healthy of people.

It is a kind of easy to use that the purpose of this utility model is to provide, and can remove the chalk writing on blackboard or other body surface effectively, the powder ash can be collected in the chalkboard eraser simultaneously, prevents to pollute the chalkboard eraser of indoor health.

In order to achieve the above object, the utility model is to be provided with the symmetrical sideboard that is plugged on the support that upper shell is provided with later in the both sides that upper/lower terminal has an inclined-plane upper shell, the pull bar two ends are connected with symmetrical sideboard, the felt plate that both sides have groove is installed in the upper shell by pull bar, the felt plate simultaneously is provided with the bar shaped felt, and another side joins with the foam pad of placing in the lower house.The lower house back is provided with several semicircle shape projectioies.

The utility model has the advantages that: simple in structure, easy to use, remove chalk writing on blackboard or other body surface effectively, can with dust collection in chalkboard eraser, prevent to pollute the chalkboard eraser of indoor health simultaneously.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is the utility model schematic perspective view;

Fig. 2 is the utility model schematic cross-section;

Fig. 3 is the utility model felt plate schematic diagram.

By Fig. 1～Fig. 3 as can be known, the utility model is to be provided with the symmetrical sideboard 2,3 that is plugged on the support 5 that upper shell 1 is provided with later in the both sides that upper/lower terminal has an inclined-plane upper shell 1, pull bar 4 two ends are connected with symmetrical sideboard 2,3, the felt plate 7 that both sides have groove is installed in the upper shell 1 by pull bar 4, felt plate 7 one sides are provided with bar shaped felt 6, and another side joins with the foam pad of placing in the lower house 98.The lower house back is provided with several semicircle shape projectioies 10.

Said upper and lower casing and felt plate form by plastic injection-moulded,

Said foam pad is commercially available foam pad, can select 2～6 centimetres foam pad for use.

The felt plate contacts with blackboard when using, the felt plate is because the effect of power is shunk foam pad, at this moment, when chalkboard eraser moves right, sideboard 3 tilts, and sideboard 2 is upright, at this moment, inclination sideboard 3 does not contact with chalk writing on the blackboard, and upright sideboard 2 is wiped dust with felt and fallen in the housing 1.Otherwise upright sideboard 2 tilts, and the sideboard 3 of inclination is upright, and move left and right is wiped the chalk writing on the blackboard repeatedly like this.Sideboard one end of chalkboard eraser symmetry tilts, and the other end is upright, chalk dust prolong the sideboard of inclination and upper shell with dust collection in lower house.

Claims (2)

1, a kind of chalkboard eraser, form by upper shell, lower house, felt, it is characterized in that: the both sides that upper/lower terminal has an inclined-plane upper shell (1) are provided with symmetrical sideboard (2), (3) that are plugged on the support (5) that upper shell (1) is provided with later, pull bar (4) two ends are connected with symmetrical sideboard (2), (3), the felt plate (7) that both sides have groove is installed in the upper shell (1) by pull bar (4), felt plate (7) one side is provided with bar shaped felt (6), and another side joins with the foam pad of placing in the lower house (9) (8).

2, according to the described chalkboard eraser of claim 1, it is characterized in that: the lower house back is provided with several semicircle shape projectioies (10).

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