CN2048431U

CN2048431U - Caterpillar blackboard brush with dust pan

Info

Publication number: CN2048431U
Application number: CN 89200630
Authority: CN
Inventors: 余国雄
Original assignee: Individual
Current assignee: Yu Guoxiong
Priority date: 1989-01-19
Filing date: 1989-01-19
Publication date: 1989-11-29

Abstract

The utility model discloses a caterpillar blackboard brush with a dust pan, and relates to a manual brush class with a drive brush body. The utility model comprises a hollow casing, a dust removal mechanism and a dust collecting box below the casing. The dust removal mechanism is composed of two rotating shafts being upright in the casing and a brushing cloth surrounding the rotating shaft, and because the rotation of the rotating shaft makes the brushing cloth form a caterpillar structure, the chalk dust on the brushing cloth is brushed into a dust box through a scraper or a hair brush. The blackboard brush does not need any power supply in use. The utility model has the advantages of convenient operation, simple structure, low cost and basically keeps the people's habit that the blackboard brush is used for a long time.

Description

Caterpillar blackboard brush with dust pan

The utility model relates to a kind of brush that the transmission brush body is arranged.

In the past, used chalk on blackboard, to write easily in the teaching, but when blackboard wiping, can cause a powder to fly upward, made air severe contamination in the classroom, harmful.For avoiding a powder to fly upward, existing at present driven blackboard or dust-free black board eraser, but cost is all very high, therefore is difficult for popularizing, and need electricity consumption and inconvenience extremely when using with the grey scavenging machine of pen.

The purpose of this utility model be design a kind of substantially similar, easy to use on structural form to existing common blackboard eraser, need not add just automatic dust collection in use of any energy, prevent the blackboard eraser that an ash flies upward, another purpose is under the condition on satisfy, provide a kind of work simple, solid durable, cost is low, the blackboard eraser that is easy to popularize.

The utility model is achieved in that it by a hollow housing (11), and one places the dedusting mechanism of housing and the blackboard eraser handle (12) of back side of shell boss formation and the drawer type break flour box (13) of blackboard eraser housing lower end to form.

Hollow housing (11) has a broader edge opening (14) before, and the part of dedusting mechanism is outwards protruded from opening part, to form the wiping examination face in order to wiping pen ash.

Dedusting mechanism comprise at least two stand on that housing (11) is gone up and near the rotating shaft (15) of front openings end, (16), be surrounded on the wiping cloth (rags) (17) of two rotating shaft outer rims, one is positioned at housing (11) and supports and can press the withstand voltage pad (22) that in the middle of the scraping blade (20) of the rear surface of wiping cloth (rags) or hairbrush (20-1) and rotating shaft one below the upper limb and wiping cloth (rags) serves as a contrast flat wiping cloth (rags) by spring (18), (19).Two rotating shafts are free to rotate, and unidirectional fixedly rotational pin (15-1), (16-1) are arranged on the tupelo.Scraping blade (20) or hairbrush (20-1) are dedusters, and it is owing to the support of spring has suitable elasticity.Because scraping blade or hairbrush are to stand in the housing (11) at wiping cloth (rags) (17) rear and be subjected to the tension force effect of this spring and press the wiper surface, make wiping cloth (rags) (17) around two rotating shafts rotation the time, have a rotation reverse blocking power.

A selector button switch (12-1) is equipped with in the top of blackboard eraser handle (12), it can freely be selected to use by the custom that the user presses the left hand or the right hand, two to all rotating this rotational pin simultaneously about unidirectional fixedly rotational pin in the conversion left and right sides or standard-sized sheet, like this, one-directional rotation can increase coefficient of friction, makes blackboard on ash easier to be peace and quiet.

Two rotating shafts (15), (16) that housing (11) is supported can disassemble very easily, so that change cleaning wiping cloth.The fixed screw pine of revolving lock on housing (11) is unloaded, and can two rotating shafts (15), (16) be taken out together with wiping cloth (rags) (17) from housing (11) front openings end.

Foaming sponge pad (21) is attached to prerequisite (11) inwall, can be from housing outside vent cover (11-1) take out this foaming sponge pad (21) so that clean attached thereon chalk dust or from then on opening part the sponge that foams is applied certain humidity.

When using blackboard eraser, grip housing (11) rear end handle (12), and with the wiping cloth (rags) face of housing front openings end as with the contact-making surface of blackboard, wiping mode that promptly can tradition is grey on the blackboard wiping easily.In the wiping, if horizontal wiping is arranged, then driving wiping cloth (rags) (17) rotates in two rotating shafts (15), (16) cocycle, at this moment, inner scraping blade of housing (11) (20) or hairbrush (20-1) are subjected to reverse blocking power and form the pen ash action of striking off automatically on the wiping cloth (rags) table edge, make the wiping cloth (rags) of cycle rotation keep dustless clean conditions, so the continual use of energy, the dust that scrapes is concentrated and is fallen into drawer type break flour box (13) inside, and is attached on the foaming sponge pad (21).

The design's blackboard eraser, simple in structure, each Element Design exquisiteness, rationally, cost is low, and kept traditional custom wiping mode, again can the automatic dust collection dedusting, easy to use.

Description of drawings:

Fig. 1 sees perspective view outside the utility model, bottom break flour box is extracted out among the figure.

Fig. 2 is the front view of the utility model outward appearance, the wiping cloth (rags) of blackboard eraser is dismantled among the figure, to demonstrate two rotating shafts in the housing.

Fig. 3 is the A-A sectional drawing of Fig. 2;

Fig. 4 is the B-B sectional drawing of Fig. 2;

Fig. 5 is the perspective view of hairbrush;

Fig. 6 is the perspective view of the lining withstand voltage pad of flat wiping cloth (rags) (22).

Claims

1, a kind of Track Type control of dust blackboard eraser, the blackboard eraser handle (12) of projection that it includes the back side of hollow blackboard eraser housing (11), dedusting mechanism and blackboard eraser housing is characterized in that there is a drawer type break flour box housing lower end; Its dedusting mechanism is made of the deduster of face in two rotating shafts (15) of blackboard eraser housing front openings face, (16) and after around thereon crawler type wiping cloth (rags) (17) and wiping cloth (rags), and this deduster supports and press face after wiping cloth (rags) by spring (18), (19).

2, Track Type control of dust blackboard eraser according to claim 1 is characterized in that described deduster is scraping blade (20).

3, Track Type control of dust blackboard eraser according to claim 1 is characterized in that described deduster is hairbrush (20-1).

4,, it is characterized in that the blackboard eraser enclosure interior is provided with foaming sponge pad (21) according to claim 1,2 or 3 described Track Type control of dust blackboard erasers.

5,, it is characterized in that there is a vent cover (11-1) the housing top according to claim 1,2 or 3 described Track Type control of dust blackboard erasers.

6, according to claim 1,2 or 3 described Track Type control of dust blackboard erasers, it is characterized in that in the middle of two rotating shafts and below the wiping cloth (rags) near the flat withstand voltage pad (22) of a lining is arranged.