CN2214303Y

CN2214303Y - Dust removing eraser

Info

Publication number: CN2214303Y
Application number: CN 94239451
Authority: CN
Inventors: 章国暋
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-10-10
Filing date: 1994-10-10
Publication date: 1995-12-06
Anticipated expiration: 2004-10-10

Abstract

The utility model relates to a dust removing eraser, comprising a base frame and a rolling brush arranged on both sides of a plastering cavity. The rolling brush is driven by a roller through a gear set composed of a transmission gear and the end gear of the rolling brush, and the roller and the transmission gear are connected by the clutch of the positive direction or the reverse direction composed of a bowl casing, a sinistral or dextral eccentric wheel and rolling balls. The rolling brush rotates from inward to outward all the time to erase the dust into the blackboard eraser from both sides of the plastering cavity, and the dust recovering effect is enhance greatly.

Description

Dust removing eraser

The utility model relates to a kind of dust-removing blackboard eraser.

A kind of dust absorption blackboard eraser is arranged now, is to adopt the micro motor for driving fan blade to rotate, at the centre bore absorption dust of blackboard eraser.Because by the dust major part under the brush is to accumulate in both sides, so it is bad to reclaim the effect of dust, adding needs electricity consumption, is difficult to promote the use of.

Task of the present utility model is at above-mentioned defective, designs a kind of dust-removing blackboard eraser, adopt gear-driven round brush the dust collection of both sides in blackboard eraser.

For finishing above-mentioned task, design of the present utility model is: a kind of dust-removing blackboard eraser, has a pedestal, the pedestal bottom has one to whitewash the chamber, it is characterized in that whitewashing the both sides, chamber a round brush that has the end tooth wheel is respectively arranged, two end tooth wheels are positioned at the same end of pedestal, are linked to be gear train with two identical travelling gear engagements between two end tooth wheels, and each travelling gear connects a roller respectively by forward clutch or reverse clutch.

Elaborate below in conjunction with embodiment and accompanying drawing thereof.

Fig. 1 is the vertical view that present embodiment removes the top cover cap.

Fig. 2 is that M-N section place has the A of top cover cap to view among Fig. 1.

Fig. 3 is that M-N section place has the B of top cover cap to view among Fig. 1.

Fig. 4 is the structure chart that roller is connected with travelling gear.

Fig. 5, Fig. 6 are the vertical views of C-C section among Fig. 4.

Dust-removing blackboard eraser as shown in Figure 1, 2 has a pedestal 1, and its underpart has one to whitewash chamber 3, is used for the filling felt, as common blackboard eraser.A round brush 2 and 2 ' respectively is equipped with in the both sides of whitewashing chamber 3.Each round brush 2 or 2 ' is provided with an

end tooth wheel

5 or 5 '.Two end tooth wheels 5 and 5 ' are positioned at the same end of pedestal, are linked to be gear train with two travelling gears 4 and 4 ' engagement between two end tooth wheels.Each travelling gear 4 or 4 ' connects a roller 6 or 6 ' respectively by forward clutch or reverse clutch.

Roller shown in Fig. 4,5,6 and travelling gear syndeton, i.e. forward or reverse clutch, by bowl shell 10, left-handed or dextrorotation eccentric wheel 11 or 11 ' and the ball 9 between them form.Bowl shell 10 fuses with

travelling gear

4 or 4 '.Eccentric wheel 11 or 11 ' is that one left-handed by three synthetic lobe eccentric wheels of three eccentric group, and a dextrorotation fuses with two rollers 6 or 6 ' respectively.Place three balls 9 between eccentric wheel and the bowl shell, can guarantee to close stress equalization when tight.

When roller to a direction, as clockwise rotate, an eccentric wheel is arranged, dextrorotation eccentric wheel 11 ' as shown in Figure 6 is pressed on ball 12 on bowl shell 10, clutch closes tightly, roller 6 ' is connected with travelling gear 4 '; And another eccentric wheel, 11 of left-handed eccentric wheels as shown in Figure 5 unclamp ball 12, and roller 6 is thrown off with travelling gear 4, can slide relatively.When roller changes a direction as rotating counterclockwise, the duty of forward and reverse clutch is also changed, with above-mentioned opposite.No matter roller by what direction rotates, and has only a roller and its travelling gear to close stressed joint, plays the effect of driving wheel, drives both sides round brush 2 and 2 '; And another roller and its travelling gear disconnect, and relative slip is arranged, and this travelling gear is tumbler gear in the middle of plaing a part in fact.Suitably arrange the position, the left and right sides of two clutches, can make round brush 2 and 2 ' always keep ecto-entad to rotate, dust is brushed in the blackboard eraser.

For dust can successfully be entered in the blackboard eraser, be designed to domatic towards round brush whitewashing the side 8 relative, chamber 3 with round brush 2 and 2 '.

For blackboard eraser can be moved back and forth on blackboard reposefully, an end of not adorning roller at pedestal is equipped with stabilizer 7, as shown in figures 1 and 3.

Erase the board with above-mentioned blackboard eraser, dust mostly accumulates in the both sides of whitewashing the chamber.In the process that erases the board, roller drives round brush also ceaselessly rotating to whitewashing the chamber, can go into the timely scrubbing brush of the dust that gathers together in the blackboard eraser, and the dust recovering effect is greatly improved.

Claims

1, a kind of dust-removing blackboard eraser, has a pedestal (1), the pedestal bottom has one to whitewash chamber (3), it is characterized in that whitewashing the both sides, chamber a round brush (2,2 ') that has end tooth wheel (5,5 ') is respectively arranged, two end tooth wheels (5,5 ') be positioned at the same end of pedestal, between two end teeth wheels, mesh and be linked to be gear train with two identical travelling gears (4 and 4 '), each travelling gear (4 or 4 ') connects a roller (6 or 6 ') respectively by forward clutch or reverse clutch.

2, dust-removing blackboard eraser according to claim 1, the clutch forward or backwards that it is characterized in that connecting roller and travelling gear is by bowl shell (10), left-handed or dextrorotation eccentric wheel (11 or 11 ') and the ball (9) between them are formed.

3, dust-removing blackboard eraser according to claim 1 is characterized in that whitewashing the side (8) relative with round brush (2 or 2 '), chamber (3) and is domatic towards round brush.

4, dust-removing blackboard eraser according to claim 1 is characterized in that an end of not adorning roller at pedestal is equipped with stabilizer (7).