CN2352367Y

CN2352367Y - Blackboard eraser with means for absorbing chalk dust

Info

Publication number: CN2352367Y
Application number: CN 98239348
Authority: CN
Inventors: 尚世伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-16
Filing date: 1998-11-16
Publication date: 1999-12-08
Anticipated expiration: 2008-11-16

Abstract

The utility model discloses a dust absorbing blackboard eraser. The utility model is combined by an upper part and a lower part. The inner part of a dust absorbing box of the upper part is divided into a chamber of an inner barn and a chamber of an outer barn by a blocking plate, and chamber of the inner barn is communicated with the chamber of the outer barn. The inner barn is a dust absorbing cavity, and a motor and a fan blade are arranged in the dust absorbing cavity. The outer barn is a dust storing barn. An erasing plate of the lower part is provided with a plurality of through holes. The upper part is connected with the lower part in a fitting way. The utility model has simple structure and convenient use. The utility model can absorb the erased down dust in the cavity, and can keep the cleanness of teaching environment.

Description

Ash-collecting blackboard eraser

The utility model belongs to teaching aid, is specifically related to a kind of blackboard eraser.

In all kinds of schools, also using plank to adhere to the old-fashioned blackboard eraser of big felt face structure in a large number at present, when blackboard wiping, dust flies upward everywhere, causes environmental pollution, and the harm people's is healthy.

The purpose of this utility model provides a kind of blackboard eraser that can dust suction, can be drawn onto in the cavity of blackboard eraser self wiping chalk dust down, thereby the elimination dust pollution is brought up clean, sanitary academic environment.

The technical solution adopted in the utility model is: ash-collecting blackboard eraser is constituted by upper and lower two parts.Upper part is a dust-absorbing box, and it has a housing of going up face closure, and its inside is become the inside and outside bin of top entire body by barrier partitions, interior storehouse is following uncovered vacuum chamber, a direct current generator is arranged in the vacuum chamber, and the motor shaft lower end connects a fan leaf, and the fan leaf is positioned at the open-mouth of vacuum chamber.Outer storehouse is the powder storehouse, and powder has drop in leaf below the storehouse, and there is the battery case of sealing the side in powder storehouse, and battery is connected direct current generator by lead with switch.The bottom of blackboard eraser is a Wiper plate, and it is to have felt rug at interval below a flat board, and there are a plurality of open-works at no felt rug place on the flat board.Dust-absorbing box coincide up and down with Wiper plate and is connected.

The utility model is simple in structure, makes easily, and is with low cost, easy to use.During blackboard wiping; toggle switch, connection power supply; motor immediately rotates; the fan leaf inspiration vacuum chamber that the dust that the felt rug wiping is got off is rotated by the open-work on the Wiper plate at any time; and the connected entrance above baffle plate enters into the powder storehouse; make space outerpace no longer include disorderly dust, thereby can bring up clean teaching environment, the protection teachers and students' is healthy.

Further specify structure of the present utility model below in conjunction with drawings and embodiments.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a dust-absorbing box structural representation of the present utility model;

Fig. 3 is the upward view of Fig. 2;

Fig. 4 is a Wiper plate structural representation of the present utility model;

Fig. 5 is the upward view of Fig. 4.

The ash-collecting blackboard eraser of embodiment is pegged graft mutually by dust-absorbing box 1 and Wiper plate 2 and is constituted, it has rectangular cross section, dust-absorbing box 1 adopts the whole shell of moulding firmly, its inside is separated into three bins that lead on top by half parallel high baffle plate 7 of twice, middle is vacuum chamber 4, both sides are powder storehouse 9, and there is battery case 10 9 sides, powder storehouse.Direct current generator 5 in the vacuum chamber 4 is axially perpendicular to loam cake and is fixed on the housing, and the fan leaf 3 that the axle lower end connects is positioned at the open-mouth of vacuum chamber, and the outer rim of fan leaf 3 is united solar or lunar halo.Baffle plate 7 has the space apart between the case top lid, and powder storehouse 9 and vacuum chamber 4 are led to, and the contrary wind plate 8 of folding down that tilts in the oriented powder storehouse, baffle plate 7 upper ends flows backwards to stop the dust in the powder storehouse; The shield 6 that having in the housing sidewall of motor both sides is inclined upwardly stretches out is in case dust falls, spills.There is drop in leaf 11 9 bottom surfaces, powder storehouse, when the dust storage is full, can remove Wiper plate 2 down, open drop in leaf 11, continue after dust is outwelled to use again.Wiper plate 2 is flat boards, adheres to two felt rugs 14 below, is distributed with a plurality of open-works 12 on the flat board around the felt rug 14.The interface corresponding with dust-absorbing box 1 arranged above the Wiper plate 2, and interface has all cushion rubbers 13, and after the two was pegged graft, cushion rubber 13 played sealing function, and dust leaks when preventing dust suction.

Claims

1, a kind of ash-collecting blackboard eraser, it is characterized in that it is constituted by upper and lower two parts, top is dust-absorbing box (1), it has a housing of going up face closure, its inside is separated into the inside and outside bin that lead on top by baffle plate (7), and interior storehouse is a following uncovered vacuum chamber (4), and a direct current generator (5) is arranged in the vacuum chamber (4), motor (5) axle lower end connects a fan leaf (3), and fan leaf (3) is positioned at the open-mouth of vacuum chamber (4); Outer storehouse is powder storehouse (9), below powder storehouse (9) drop in leaf (11) is arranged; The bottom is Wiper plate (2), and it is to have felt rug (14) at interval below a flat board, and there are a plurality of open-works (12) at no felt rug place on the flat board, dust-absorbing box (1) and upper and lower identical connection of Wiper plate (2).

2, ash-collecting blackboard eraser according to claim 1, it is characterized in that it has rectangular cross section, dust-absorbing box (1) is inner to be separated into three bins that lead on top by half parallel high baffle plate (7) of twice, and the centre is vacuum chamber (4), and both sides are powder storehouse (7).

3, ash-collecting blackboard eraser according to claim 2, the contrary wind plate (8) of folding under it is characterized in that in oriented powder storehouse, baffle plate (7) upper end, tilting; The shield (6) that having in the housing sidewall of motor both sides is inclined upwardly stretches out.

4, ash-collecting blackboard eraser according to claim 1 is characterized in that the outer rim of fan leaf (3) is united solar or lunar halo.