CN2115236U

CN2115236U - Dust-proof eraser

Info

Publication number: CN2115236U
Application number: CN 92204177
Authority: CN
Inventors: 温友; 朱凤珍
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-14
Filing date: 1992-03-14
Publication date: 1992-09-09

Abstract

The utility model relates to a dust-proof blackboard eraser, which is composed of a bottom plate, a skirt-typed frame, an elastic seal strip, and a brush board provided brush bristles. The skirt-typed frame is fixedly connected with the bottom plate, and the elastic seal strip is fixedly connected with the frame; the brush board is fixed on the bottom plate, and is positioned in a dust collecting cavity which is formed by that the frame and the bottom plate are surrounded. When in use, the elastic seal strip is contacted with the board surface of a blackboard, and makes the dust collecting cavity of the blackboard eraser sealed; power dust generated when the brush bristles erase the blackboard is limited in the dust collecting cavity, and the powder dust fallen into the dust collecting cavity is discharged from dust exhausting ports on the frame, so the phenomenon that powder dust flies when the blackboard is erased is eliminated.

Description

Dust-proof eraser

The utility model relates to a kind of realia, particularly a kind of blackboard eraser.

The traditional blackboard eraser chalk foam when blackboard wiping that uses in the school instruction flies upward everywhere at present, the sanitation and hygiene in classroom have not only been influenced, if things go on like this also influence the healthy of teachers and students, fly upward people's design and studied various dust-sucking erasers in order to eliminate powder, but because or complex structure, fragile, price is high or owing to the dirt weak effect that disappears fails to apply.

The purpose of this utility model provides a kind of simple in structure, makes easily, and is not fragile, low-cost, the Dust-proof eraser that the dirt that disappears is reliable for effect.

Dust-proof eraser is made of base plate (1), skirt type frame (3), elastic sealing strip (5) and the brush board (4) that has a bristle.Skirt type frame is fixedlyed connected with base plate, and elastic sealing strip is fixedlyed connected with frame, and brush board is fixed on the base plate and is positioned at skirt type frame.The dust-exhausting port that has the lid door is arranged on the skirt type frame, and dust can be discharged outside the blackboard eraser by dust-exhausting port.

Elastic sealing strip contacts with blackboard panel when using the Dust-proof eraser blackboard wiping, the base plate of blackboard eraser, skirt type frame and blackboard panel surround an enclosed cavity, brush board is positioned at enclosed cavity, thereby the chalk dust that produces when erasing the board falls in the enclosed cavity and do not have the dust from flying phenomenon and take place, and the dust that falls in the blackboard eraser can be discharged by outlet.

The further improvement of Dust-proof eraser is, integral body is connected with pylon on the base plate, and brush board is fixed on and makes alternate certain distance between brush board base plate and base plate plate face on the pylon, thereby makes Dust-proof eraser have the dirt that better disappears, dust collecting effect.

Dust-proof eraser manufacturing simple in structure, easy, the not fragile long service life of parts, because the effect good airproof performance of elastic sealing strip, the dirt that disappears, dust collecting effect are reliable during blackboard wiping, and the blackboard eraser cost is low, and low price is easy to utilize.

Accompanying drawing is example structure figure of the present utility model, further specifies the utility model below in conjunction with embodiment.

Fig. 1 is the cutaway view of Dust-proof eraser;

Fig. 2 is the vertical view of blackboard eraser shown in Figure 1;

Fig. 3 is Fig. 2 A-A profile;

Fig. 4 connects the cutaway view of the Dust-proof eraser of pylon for base plate has brush board;

Fig. 5 is the vertical view of Dust-proof eraser shown in Figure 4;

Fig. 6 is Fig. 5 B-B profile.

Fig. 1 to Fig. 3 is a kind of example structure type of Dust-proof eraser.As shown in the figure, base plate (1), skirt type frame (3) adopt plastic production, utilize screw (2) that the two is fixedly connected.Dust-exhausting port (7) is arranged on the frame, and there is removable cover door (8) at the dust-exhausting port place, and dust-exhausting port can be discharged Dust collector for blackboard eraser.The elastic sealing strip (5) that adopts rubber slab to make is affixed on the skirt type frame, can make the base plate frame when with the blackboard eraser blackboard wiping, reach the cavity sealing that blackboard panel surrounds.The brush board (4) that has bristle (6) is fixedlyed connected with base plate and is positioned at frame.During with the Dust-proof eraser blackboard wiping, elastic sealing strip will be equipped with the blackboard eraser cavity sealing of brush board, and the chalk dust foam that blackboard wiping produces is closed in the cavity, has eliminated the dust from flying phenomenon, and the dust that the wiping test manufacture is given birth to is collected by cavity and discharged by outlet.

Fig. 4～Fig. 6 is the another kind of example structure pattern of Dust-proof eraser.As shown in the figure, the structure of this blackboard eraser and Fig. 1～Dust-proof eraser shown in Figure 3 is basic identical, the whole connection pylon (10) that connects is arranged on the base plate of the Dust-proof eraser of this structural shape (9), brush board utilizes screw to be fixedly connected on and makes base plate plate face and brush board plate face interbody spacer certain distance on the pylon, thereby more helps control of dust.

Claims

1, a kind of Dust-proof eraser, it is characterized in that constituting by base plate (1), skirt type frame (3), elastic sealing strip (5) and the brush board (4) that has a bristle, skirt type frame is fixedlyed connected with base plate, elastic sealing strip is fixedlyed connected with frame, brush board is fixedlyed connected with base plate and is positioned at skirt type frame, and skirt type frame has the dust-exhausting port (7) that has lid door (8).

2, according to the described Dust-proof eraser of claim 1, it is characterized in that said base plate has the whole connection pylon that connects, brush board is fixed on and connects on the pylon, and brush board plate face and base plate plate face keep at a certain distance away.