CN2628282Y

CN2628282Y - Automatic removing chalk dust blackboard eraser capable of rolling inversely

Info

Publication number: CN2628282Y
Application number: CN 03218064
Authority: CN
Inventors: 朱溪泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-09
Filing date: 2003-06-09
Publication date: 2004-07-28
Anticipated expiration: 2013-06-09

Abstract

An automatic removing chalk dust blackboard eraser capable of rolling inversely is provided and comprises a frame shell body, a frame shell body cover, a rolling eraser cylinder arranged in the frame shell body, a dust cleaning brush and a dust collecting box. A positioning pin is arranged on the rolling eraser cylinder body and a rolling bearing is arranged at the two ends of the rolling eraser cylinder body. The rolling bearing is positioned in the bearing seat and is fixed through the bearing seat cover. The dust cleaning brush is closely clung to the rolling eraser cylinder body. The frame shell body is provided with an opening. A part of the rolling eraser cylinder extends out of the frame shell body opening. An arc-shaped dust baffle plate is arranged at the opening. The utility model can prevent chalk dust from flying everywhere when the blackboard is being wiped and the wiping neatness is greatly improved.

Description

The automatic dust-removing blackboard eraser of reversible rolling

Technical field

The utility model relates to a kind of teaching aid.

Background technology

When the schoolman gave a lesson blackboard wiping for a long time, chalk dust flew upward everywhere, the generation harmful effect healthy to teachers and students, and traditional blackboard eraser can't address this problem.

Summary of the invention

The purpose of this utility model provides a kind of automatic dust-removing blackboard eraser of reversible rolling of sanitation and hygiene, the problem that chalk dust flew upward when it can solve blackboard wiping effectively everywhere.

For achieving the above object, the utility model adopts following its structure: the automatic dust-removing blackboard eraser of reversible rolling, comprise the frame housing, be covered on the frame case lid on the frame housing, tube, deashing brush, ash collecting box are wiped in the bearing block, pedestal cap, the rolling that are arranged in the frame housing; The cylindrical shell that tube is wiped in rolling is provided with alignment pin, rolling bearing is installed at its two ends, and rolling bearing places bearing block, fixed by pedestal cap, and the deashing brush being close to the cylindrical shell that tube is wiped in rolling; The frame housing has an opening, and the part of wiping tube of rolling stretches out in outside the frame shell nozzle, and opening part is provided with dust block board.

Described dust block board is circular arc type and is close to roll and wipes the cylindrical shell of tube.

Offer the grey passage of collection on the described ash collecting box.

When using this blackboard eraser blackboard wiping, the wiping tube that rolls is rolled to certain angle earlier, alignment pin is stuck on the housing, dragging blackboard eraser is wiped the powder ash on the blackboard by the wiping tube that rolls, realizing thus rolls wipes the left and right bidirectional rolling of tube, and the powder ash of wiping is brought in the housing, and the deashing brush sweeps ash collecting box with the powder ash automatically, the powder ash flies upward everywhere when having avoided blackboard wiping, has improved the degree of cleaning of blackboard again greatly.Another characteristics of this blackboard eraser are the size shape that keep traditional blackboard to wipe, and meet the custom of teacher's blackboard wiping.

Description of drawings

Fig. 1 is that the master of the automatic dust-removing blackboard eraser of reversible rolling looks cutaway view.

Fig. 2 is the cutaway view along A-A direction among Fig. 1.

Fig. 3 is the cutaway view along B-B direction among Fig. 1.

Fig. 4 is the cutaway view along C-C direction among Fig. 1.

The specific embodiment

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the automatic dust-removing blackboard eraser of reversible rolling, its member comprise frame housing 8, roll and wipe tube 5, rolling bearing 6, pedestal cap 2, deashing brush 3, frame case lid 1, ash collecting box 10, dust block board 7, alignment pin 4, bearing block 9.Rolling bearing 6 is installed in to roll wipes tube 5 two ends, and bearing block 9 is fixed in the frame housing 8, and rolling bearing 6 is contained on the bearing block 9, and is with pedestal cap 2 that rolling bearing 6 is fixing again.Deashing brush 3 is fixed in the upper hole of pedestal cap 2, and its brush body part is close to the wiping tube 5 that rolls.The frame housing has an opening, and the part of wiping tube 5 of rolling stretches out in outside the frame shell nozzle, and opening part is provided with dust block board 7.For making sealing effectiveness better, dust block board 7 is designed to circular arc type and is close to roll and wipes tube 5.

The operation principle of this blackboard eraser is as follows: when to the right blackboard wiping, roll and wipe tube 5 after angle of left side rotation, the alignment pin of wiping on the tube 54 that rolls snaps on the frame housing 8, and the wiping tube 5 that rolls stops operating and begins blackboard wiping; When again to the left side blackboard wiping, roll and wipe tube 5 elder generations after angle of the right rotation, the alignment pin of wiping on the tube 54 that rolls snaps on the frame housing 8, and rolling wiping tube 5 stops operating and begins blackboard wiping.In roll wiping the tube rotation process powder ash of wiping is brought in the frame housing 8, the deashing brush 3 powder ash of wiping on the tube 5 that will roll is cleared away automatically, falls into ash collecting box 10 by collecting grey passage 11.The powder ash flies upward everywhere when so both having avoided blackboard wiping, can improve degree of cleaning greatly again.When the powder ash was filled ash collecting box 10, desirable lower bearing bracket case lid 1 was poured out it.

Claims

1, the automatic dust-removing blackboard eraser of reversible rolling is characterized in that: comprise the frame housing, be covered on the frame case lid on the frame housing, tube, deashing brush, ash collecting box are wiped in the bearing block, pedestal cap, the rolling that are arranged in the frame housing; The cylindrical shell that tube is wiped in rolling is provided with alignment pin, rolling bearing is installed at its two ends, and rolling bearing places bearing block, fixed by pedestal cap, and the deashing brush being close to the cylindrical shell that tube is wiped in rolling; The frame housing has an opening, and the part of wiping tube of rolling stretches out in outside the frame shell nozzle, and opening part is provided with dust block board.

2, the automatic dust-removing blackboard eraser of reversible rolling according to claim 1 is characterized in that: described dust block board is circular arc type and is close to roll and wipes the cylindrical shell of tube.

3, the automatic dust-removing blackboard eraser of reversible rolling according to claim 1 is characterized in that: offer the grey passage of collection on the described ash collecting box.