CN2309959Y

CN2309959Y - Light dust-proof blackboard traser

Info

Publication number: CN2309959Y
Application number: CN 97230511
Authority: CN
Inventors: 万金祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-10
Filing date: 1997-12-10
Publication date: 1999-03-10
Anticipated expiration: 2007-12-10

Abstract

The utility model discloses a light dust-proof blackboard eraser. A groove-shaped casing 2 is fixedly connected with a base board 1, and a dust storing chamber 6 is formed between the casing 2 and the base board 1. More than two strip-shaped eraser strips 3 are fixedly connected with the base board 1, dust leading tongue sheets 4 are piecewise and fixedly arranged between two eraser strips at intervals, the root of each dust leading tongue sheet 4 is provided with a dust leading hole 15 communicated with the dust storing chamber 6, and a dust bucket is positioned at the lower part and is fixedly connected with the base board 1. The utility model has the advantages of light weight and convenient use. Blackboard dust is led in the dust storing chamber through the inclined dust leading tongue sheets, and dust is cleaned through a movable dust door 11. The utility model has good dust erasing effect and good dust-proof function.

Description

Light dust-proof blackboard eraser

The utility model relates to a kind of light dust-proof blackboard eraser, belongs to teaching aid.

In disclosed patent documentation, being used for the dustproof blackboard eraser has varied.But a variety of wiping blackboard structure complexity, cost height, wipe by rolling bar, rolling support, the dustproof pawl etc. that for example have constitute.Establish motor in having, the air-flow dust discharge that utilizes rotation to form.What have is provided with square track on blackboard, the structure member of blackboard eraser is by spring, closure plate, casing, motor, gearcase, dust-collecting box, power supply phase changer etc. are formed up and down.Though these devices have played effects such as dustproof, free from environmental pollution effectively.But finally not being used more widely, much less is also not see use in vast small and medium-sized cities, outlying poverty-stricken area.Although so the dust-proof blackboard eraser technology reaches hundred kinds in the document, numerous teachers still use old-fashioned blackboard eraser.

The purpose of this utility model is low, easy to use, the dustproof high novel and portable dust-proof blackboard eraser of effect of a kind of cost of design.

Scheme of the present utility model is as follows: the utility model mainly by shell 2, substrate 1, wipe bar 3, draw grey tongue piece 4, ash bucket 5, Dust Storage Room 6, movable ash door 11 form.The controlling organization of movable ash door 11 can be made up of deashing button 7, gasket seal 8, spring base 9, jump ring groove 14.Substrate 1 is fixedlyed connected with shell 2, the space that forms between the shell 2 of flute profile and the substrate 1 be the wiping bar of the bar shaped of Dust Storage Room more than 6, two with certain fixed interval on substrate 1.Wipe between the bars being fixed with of section gap for two and draw grey tongue piece 4, be provided with ash drawing hole 15 on each draws the root substrate 1 of grey tongue piece 4, ash drawing hole 15 and Dust Storage Room 6 communicate.Ash bucket 5 is positioned at the device bottom fixedlys connected with substrate 1, and an end of movable ash door 11 and shell 2 flexibly connect.

Wiping bar 3 of the present utility model can be made by felt, other parts such as shell, substrate, draws grey tongue piece, ash bucket etc. and all can be made of plastics.Cost is low, in light weight, easy to use.In use, wipe bar, draw the common space that forms sealing between grey tongue piece and the blackboard, be beneficial to the collection of dust, because each root that draws grey tongue piece is provided with ash drawing hole, dust can enter Dust Storage Room by ash drawing hole.When dust is long-pending a certain amount of, opens movable ash door and remove dust.The utility model profile size is identical with general blackboard eraser, but has good dust reduction capability and wipe grey effect.

Below in conjunction with drawings and Examples the utility model is illustrated:

Fig. 1-Fig. 3 is embodiment of the present utility model.

Fig. 1 is the utility model front view, and the A of Fig. 3 is to view;

Fig. 2 is that the C-C of Fig. 1 is to view;

Fig. 3 is that the B-B of Fig. 2 is to view.

Flat wide down on the shell 2 of flute profile.Substrate 1 fixes substrate 1 and shell 2 by the substrate holder on the shell 2 10, stopper slot 12 and substrate clamp 13.Form Dust Storage Room 6 between substrate 1 and the shell 2.The compartment of terrain is furnished with and wipes 3, two of bars and wipe between the bar being fixed with and drawing grey tongue piece 4 at interval on the substrate 1, and drawing grey tongue piece 4 has certain elasticity, and its top and the wiping of wiping bar are in the face of neat.Be beneficial to the collection of dust.Each root that draws grey tongue piece 4 is provided with ash drawing hole 15, and ash drawing hole and Dust Storage Room communicate.The substrate bottom is provided with ash bucket 5, is used to collect the dust that leaks down in top, and introduces Dust Storage Room by ash drawing hole 15.

On shell 2, also be provided with deashing device.Deashing mechanism mainly is made up of movable ash door 11, spring base 9, deashing button 7, gasket seal 8, jump ring groove 14.Spring base 9 one ends are connected with deashing button 9, and the other end is connected with hole seat on the movable ash door 11.Spring base 9 upper ends are torsion spring, and torsion spring is installed on the cover spring post on the deashing button 7, and the torsion bar of torsion spring snaps in the jump ring groove 14.When pushing away deashing button 7 instantly, movable ash door 11 is opened automatically.After ash is eliminated, because the effect deashing button of spring base 9 automatically resets.Because the deashing button is installed on the inclined-plane of shell, be convenient to operation.

When blackboard eraser was worked, it was clean with blackboard eraser to wipe the bar classification, drew grey tongue piece and the ash drawing hole dust introducing Dust Storage Room under will wiping.Skewed draw grey tongue piece and make the chalk dust of wiping introduce Dust Storage Room by the gravity of self, deashing mechanism is dust out timely again.

Claims

1. light dust-proof blackboard eraser, it is characterized in that mainly by shell (2), substrate (1), wipe bar (3), draw grey tongue piece (4), ash bucket (5), Dust Storage Room (6), movable ash door (11) is formed, groove form casing (2) is fixedlyed connected with substrate (1), space between the two is Dust Storage Room (6), bar shaped more than two wipe bar (3) with certain fixed interval on substrate (1), being fixed with of section gap drawn grey tongue piece (4) between two wiping bars, on drawing the substrate (1) of grey tongue piece (4) root, each is provided with ash drawing hole (15) ash drawing hole (15) and Dust Storage Room (6) is logical, ash bucket (5) is positioned at the bottom and fixedlys connected with substrate (1), communicate by ash drawing hole (15) and Dust Storage Room (6), an end of movable ash door (11) and shell (2) flexibly connect.

2. light dust-proof blackboard eraser according to claim 1, the control device that it is characterized in that movable ash door is made up of deashing button (7), gasket seal (8), spring base (9), jump ring groove (14), one end of spring base (9) is connected with deashing button (7), and the other end and movable ash door (11) flexibly connect.