CN2131715Y - Simple blackboard eraser with dust collector - Google Patents

Abstract

The utility model relates to a simple blackboard eraser with a dust collector, comprising an erasing felt, an erasing felt base, an I-shaped dust limiting device, an N-shaped dust collecting device and a blackboard eraser frame. When chalk words are erased, the both sides of the blackboard eraser limit chalk dust to fly and the upper and the lower ends of the blackboard eraser collect the limited chalk dust. The simple blackboard eraser with a dust collector can effectively limit and collect flying chalk dust and ensure a sanitary and healthy working environment.

Description

Simple blackboard eraser with dust collector

The utility model has designed a kind of dust-collecting type blackboard eraser, particularly can guarantee when the erasing chalk, does not have the simple and easy dust-collecting type blackboard eraser of dust from flying.

Existing general expression blackboard eraser is made up of wiping carpet and blackboard rubbing frame, during the erasing chalk, and dust from flying, it seriously encroaches on the healthy of teacher for a long time.Electric dust formula blackboard eraser, power consumption and noise are all bigger, and service life is low.

The purpose of this utility model provides a kind of simple and easy dust-collecting type blackboard eraser, when it can not only guarantee the erasing letter written with chalk, does not have dust from flying, and does not use motor, and not power consumption belongs to plain type dirt formula blackboard eraser.

The utility model purpose is achieved in that the simple and easy dust-collecting type blackboard eraser according to the aerodynamic principle design, is made up of wiping carpet, felt seat, " N " type control of dust " I " type limit dirt device and blackboard rubbing frame four parts.As Fig. 1, when move left and right blackboard eraser erasing chalk, with wiping carpet chalk of wiping and the dust that is attached on the wiping carpet limit, " I " type limit dirt device by both sides is limited in dust in the dirt dust collect plant, avoids dust outwards to fly upward.The dust of restriction fall or on waft in " N " type dust collect plant at two ends, the dust that enters dust collect plant can not fly upward out again, removes that the full dust of pinching can be practical repeatedly in the dust-collecting box.

Owing to adopt such scheme, can guarantee not have dust from flying, again can not power consumption, noiselessness.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the longitudinal sectional drawing of utility model.

Fig. 2 is the transverse cross-sectional view of Fig. 1.

Among the figure 1, wiping carpet 2, felt seat 3, " N " type dust collect plant 4, blackboard rubbing frame 5, " I " type limit dust device 6, limit dust suction rubber 7, dust-proof plate 8, dirt box mouth 9, control of dust lid.

In Fig. 1, long 50--200MM, wide 30--100MM, thick 5--40MM, wiping carpet (1) stick on long 50--200MM, wide 30--100MM, thick 1--10MM, a long 25--100MM is respectively opened at two, the felt seat (2) of wide 5--50MM dirt box mouth (8), and felt seat is installed on long 60--250MM, wide 40--150MM, keep away on the blackboard rubbing frame (4) of thick 1--5MM, wiping carpet should be 0--5MM with the air gap discrepancy in elevation of limit dirt control of dust rubber (6), keeps away the thick 1--5MM of being, " N " type dust collect plant (3), " I " type limit dirt device (5) and the simple and easy dust-collecting type blackboard eraser of wiping carpet Ullage 1--20MM, gross thickness 40--150MM, dust-proof plate (7) becomes 30--80 with control of dust lid (9), make one, be installed on the blackboard rubbing frame, two ends " N " type dust collect plant and both sides " I " type limit dirt device are made one with the blackboard rubbing frame.

The utility model material, the wiping carpet felt, " I " type limit dirt device, " N " type dust collect plant, the blackboard rubbing frame all can be used making such as plastics, iron sheet, palm fiber; The wiping carpet frame is with timber or plastics.

Simple and easy dust-collecting type blackboard eraser, manufacture conveniently, cost is low, be applicable to the educational propaganda department of all kinds of schools such as national university, middle school, primary school and enterprises and institutions, teacher's teaching condition and working environment have been improved widely, eliminate dust pollution effectively, helped teacher's physical and mental health.

Claims (1)

1, a kind of blackboard eraser, particularly simple and easy dust-collecting type blackboard eraser, by containing " N " type dust collect plant, the limit dirt dust collect plant of " I " type limit dirt device, wiping carpet, felt seat, blackboard rubbing frame and " N " type control of dust " I " type limit dirt four parts are formed, it is characterized in that wall thickness is 1--50MM, " N " type dust collect plant and " I " type limit dirt device and wiping carpet Ullage are 1--20MM, the long 50-200MM of felt seat, wide 1--10MM, thickness 1--10MM, the wide 5--50MM dirt of long 2-100MM box mouth, the long 50-200MM of wiping carpet are respectively opened in two ends, wide 30-100MM, thick 5-40MM, dust-proof plate and control of dust lid angle 30--80, simple and easy dust-collecting type blackboard eraser total thickness 40--150MM, special requirement, wiping carpet is 0-5MM with the limit dirt control of dust rubber air gap discrepancy in elevation, and the wiping carpet both sides are " I " type limit dirt device, and the wiping carpet two ends are " N " type integrating device.

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