CN2517592Y

CN2517592Y - Dust collecting eraser

Info

Publication number: CN2517592Y
Application number: CN 01274676
Authority: CN
Inventors: 董建华; 张立伟; 赵春贵
Original assignee: Shanxi University
Current assignee: Shanxi University
Priority date: 2001-12-27
Filing date: 2001-12-27
Publication date: 2002-10-23
Anticipated expiration: 2011-12-27

Abstract

The utility model relates to a dust collecting type blackboard eraser, which consists of a casing, a felt, a dust collecting cavity and a cleaning brush. The casing is divided into a dust collecting cavity and an assembly felt cavity, the dust collecting cavity and the bottom cover of the dust collecting cavity form a dust storage chamber, a cylindrical felt with axles at both ends is correspondingly assembled with a bearing fixed on the assembly felt cavity, the axle and the bearing have a space, the cleaning brush is fixed on the felt in the assembly felt cavity, the hair of the cleaning brush contacts with the surface of the felt, and a direction valve is fixed between the felts. The utility model has the advantages that the material is ordinary, the structure is simple, the operation is convenient, the price is inexpensive, the dust removal effect is good, the felt jacket can be replaced, and the pollution caused by the flying dust is solved with a simple way.

Description

A kind of dust-collecting type blackboard eraser

Technical field:

The utility model belongs to a kind of blackboard eraser, relates in particular to a kind of dust-collecting type blackboard eraser.

Background technology:

The dust that flies upward when erasing the board has very big harm to the health of Faculty and Students, the dust main cause that produces when erasing the board is, what dirt was assembled between board wiper plane and the blackboard is too many, when the blackboard eraser move left and right, just look like that blackboard eraser is pushing away the motion of one " heap " dust, and then aggravated the diffusion of this " heap " dust.For this reason, people have invented the various blackboard erasers that prevent dust from flying, and great majority are to rely on electric power, have this class blackboard eraser complex structure of motor, consumed power, and volume is big, makes troubles to the user.

Summary of the invention:

The purpose of this utility model provides a kind of simple in structure, and volume is little, dust-collecting type blackboard eraser easy to use.

The purpose of this utility model is to realize like this, it is made up of shell, felt, dust-collecting cavity and Clean Brush for cleaning, it is characterized in that shell is divided into dust-collecting cavity and assembling felt chamber two parts, dust-collecting cavity and dust-collecting cavity bottom are formed dust storage chamber, two ends have the garden column type felt and the corresponding assembling of bearing that is fixed on assembling felt chamber of axle, between axle and the bearing spacing is arranged, the felt the inside is fixed with Clean Brush for cleaning in assembling felt chamber, the hair of Clean Brush for cleaning contacts with the face of felt, is fixed with the direction lock between felt.

Aforesaid Clean Brush for cleaning is fixed in the assembling felt chamber with spring, is oblique line between Clean Brush for cleaning and the felt and contacts.

Aforesaid felt is 2,4,6.

The utility model compared with prior art has following advantage:

Material is common, simple in structure, easy to use, cheap, good dedusting effect, and blanket sleeve can be changed.Solved the pollution that dust from flying causes with simple method.

The specific embodiment:

The utility model is described as follows embodiment in conjunction with the accompanying drawings:

Fig. 1 is a front view of the present utility model.

Fig. 2 is a vertical view of the present utility model.

Fig. 3 is a right side view of the present utility model.

As shown in the figure, the 1st, shell, the 2nd, collection dirt chamber, the 3rd, assembling felt chamber, the 4th, at the bottom of the collection dirt chamber Lid; Collection dirt chamber 2 and collection dirt chamber bottom 4 form collection dirt storage chamber and are used for storing dust, 5,6,7,8 Felt, the 9th, the axle at felt 5,6,7,8 two ends, the 10th, be fixed on the assembling felt chamber 3 Bearing, the axle 9 at felt 5,6,7,8 two ends and bearing 10 corresponding being assembled together, bearing 10 And between the axle 9 spacing is arranged, the 11,12, the 13rd, be fixed on the assembling felt chamber 3 and be positioned at two felts Between the direction lock, the distance regulation between corresponding with it 5,6,7,8 is as follows: 5 and 11, Distance between 6 and 12,7 and 12,8 and 13 be less than bearing 10 horizontal spacing two/ One; Distance between 6 and 11,7 and 13 be greater than bearing 10 horizontal spacing 1/2nd; The 14th, spring, an end of spring 14 are fixed in assembling felt chamber 3, other end connection Clean Brush for cleaning 15, 16,17,18, Clean Brush for cleaning 15,16,17,18 with felt 5,6,7, the 8th, oblique line contacts.

When using, hold shell 1, when the letter written with chalk on the aligning blackboard is moved to the left, 5,6 maos Felt makes 5,6 felts because the effect of frictional force makes it contact with the

lock

11,12 of fixed-direction Can not rotate, can only press except writing with the blackboard static friction, and 7,8 felt

departure direction locks

12, 13, and rolling friction, when 7,8 felt rolling friction, Clean Brush for cleaning 15,16 is to its surface The dust of adhesion brushes off, and it is indoor that dust falls into the storage of collection dirt; When blackboard eraser same reason when moving right, 7, do not rotate can only erasing out handwriting for 8 felts, and 5,6 felts roll, and have so just reached erasing chalk The purpose of writing.

Claims

1. dust-collecting type blackboard eraser, comprise shell (1), felt (5,6,7,8), dust-collecting cavity (2) and Clean Brush for cleaning (15,16,17,18), it is characterized in that shell (1) is divided into dust-collecting cavity (2) and assembling felt chamber (3) two parts, dust-collecting cavity (2) and dust-collecting cavity bottom (4) are formed dust storage chamber, two ends have the garden column type felt and the corresponding assembling of bearing that is fixed on assembling felt chamber of axle, between axle (9) and the bearing (10) spacing is arranged, in assembling felt chamber, be fixed with Clean Brush for cleaning above the felt, the hair of Clean Brush for cleaning contacts with the face of felt, is fixed with direction lock (11 between felt, 12,13).

2. a kind of dust-collecting type blackboard eraser as claimed in claim 1, it is characterized in that described Clean Brush for cleaning (15,16,17,18) is to be fixed in (3) in the assembling felt chamber with spring (14), be oblique line between Clean Brush for cleaning (15,16,17,18) and the felt (5,6,7,8) and contact.

3. a kind of dust-collecting type blackboard eraser as claimed in claim 1 is characterized in that described felt is 2,4 or 6.