CN2185686Y

CN2185686Y - Blackboard eraser with device for absorbing chalk dust

Info

Publication number: CN2185686Y
Application number: CN 94205058
Authority: CN
Inventors: 张印科
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-19
Filing date: 1994-03-19
Publication date: 1994-12-21
Anticipated expiration: 2004-03-19

Abstract

The utility model relates to a blackboard eraser with device for absorbing chalk dust removing the chalk handwriting on the blackboard. The utility model aims at the disadvantages of dust flying, environmental pollution and short service life in the existing blackboard eraser to disclose the blackboard eraser with device for absorbing chalk dust. An erasing base id provided with a square groove, the square elastic cushion having the same size is arranged in the groove, and the cushion is stuck with a group of dust absorbing frameworks sliding in the square groove. The middle part of the square groove is also provided with a strip-shaped groove used for fixing dust erasing pieces, so the purposes of absorbing chalk dust, long service life, low cost and without using electricity are realized. The blackboard eraser is also used in other plane dedust occasions except being used in the teaching.

Description

Blackboard eraser with device for absorbing chalk dust

The utility model relates to a kind of teaching aid, particularly about removing the apparatus of blackboard chalk writing.

The usefulness of removing the blackboard chalk writing at present has: the plain edition blackboard eraser that is combined by felt pan and supporting plate; By small machine, the power type blackboard eraser that felt rug and dust-collecting box combine, the former easily makes dust from flying, and the life-span is short.Latter's dust from flying is controlled to some extent, but the price height, the power consumption source, fragile, operation is also not very convenient, all is not desirable.

The purpose of this utility model is to provide a kind of collection dust, and the life-span is long, and cost is low, non-electric blackboard eraser.

For achieving the above object, the utility model has carried out technological improvement to existing commercially available blackboard eraser, that is: have the square groove that exceeds a plane in wiping seat at the end, stud with square cushion in the groove, bonding one group of section is L or L type on the pad, the frame that gathers dust that exceeds trough rim and can slide within it, and in square groove, also have the bar-shaped trough that exceeds a plane, stud with in this groove and exceed the wiping dirt spare that trough rim is used to remove dust, leave dust collecting trough between the bar-shaped trough.Be the effective collection dust, in its frame inwall that gathers dust bonding be used to the fine hair pad that prevents that dust from flying to escape, also for reducing unnecessary friction, top, edge limit is garden shape or arc.

The advantage that this reality is made novel collection dust eraser is that (1) is simple in structure, and is easily manufactured, with low cost; (2) pick-up performance is remarkable, reduces environmental pollution, and use flexibly (3), and dust suction frame frictional force is little, wipes dirt spare and goes out groove adjustable height, long service life.

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

Fig. 1 is the Facad structure schematic diagram of collection dust eraser described in the utility model.

Fig. 2 is a collection dust eraser A-A sectional schematic diagram described in the utility model.

By Fig. 1,2 as can be known, collection dust eraser described in the utility model, be by wiping seat (1), frame (2) gathers dust, square cushion (4) is wiped dirt spare (5) and is formed, and the frame (2) that wherein gathers dust is bonded on the square cushion (4) that is set in the square groove of wiping on seat (1) seat (a) by adhesive, and can in square groove (a), slide, and its frame that gathers dust (2) and blackboard by the edge inwall that touches bonding be used to the fine hair pad (3) that prevents that dust from flying to escape; Wipe dirt spare (5) and be set in the interior bar-shaped trough (b) of square groove, and exceed trough rim,, leave between the bar-shaped trough (b) and store the dust collecting trough (6) that dust is used so that wipe the blackboard writing.

Wiping seat among this embodiment, square groove, bar-shaped trough are an integral body, also can be made up by separation member, for ease of the inspection situation of gathering dust, are transparent material together with the frame that gathers dust interior, and square cushion is a foam polyolefin material, and wiping dirt spare is a felt materials.

Claims

1, a kind of collection dust eraser of wiping dirt spare (5) that contains, it is characterized in that wiping seat and have the square groove (a) that exceeds a plane on (1) end, stud with square cushion (4) in the groove, bonding one group of section is L or L type on the pad, the frame that gathers dust (2) that exceeds trough rim and can slide within it, have the bar-shaped trough (b) that exceeds a plane in the square groove (a), stud with in this groove and exceed the wiping dirt spare (5) that trough rim is used to remove dust, leave dust collecting trough (6) between bar-shaped trough.

2, collection dust eraser according to claim 1, it is characterized in that the said frame that gathers dust (2, its inwall bonding be used to the fine hair pad (3) that prevents that dust from flying to escape, top, edge limit is curved.