CN2227577Y

CN2227577Y - Electric dusting chalk brush

Info

Publication number: CN2227577Y
Application number: CN95218171U
Authority: CN
Inventors: 潘俊
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-25
Filing date: 1995-07-25
Publication date: 1996-05-22
Anticipated expiration: 2005-07-25

Abstract

The utility model discloses an electric dusting chalk brush, which is characterized in that the chalk brush adopts a dual spindle micro motor, a front axle is fixed with an adjustable chalk brush along the axle direction, and a back axle is fixed with fan blades; the front end of a casing is provided with a rubber band with sealing function and elasticity; the place where the circular arc segment of the casing is close to the back cover is provided with a dust bag cover; at the time of not working, people close the cover to prevent the dust sucked into the dust bag from pouring. Accordingly, the utility model has the advantages of reasonable structure, time saving, labor saving, convenient operation, and good dust collecting effect; the dust doesn't escape; the chalk brush is an ideal teaching tool.

Description

Electric dust sucting chalk brush

The utility model relates to a kind of eraser of the usefulness of imparting knowledge to students, especially a kind of electric dust sucting chalk brush.

In the teaching of school, once continued to use the common flour brush for these years always and erased the board, chalk dust severe contamination classroom air, the harm teachers and students are healthy.In order to address this problem, in the last few years, the innovation and creation successively of some insighted soil " dust-free chalk ", " dust-free blackboard " and " dust-sucking eraser " etc., wherein " dust-free chalk " writing on the blackboard is very not clear, " dust-free blackboard " then cost is higher, all is difficult to apply.Therefore, people focus on main goal of attack on the eraser.As the disclosed patent No. of Chinese patent is " the electric dust absorption formula blackboard eraser " that 89208397.2 " electric dust absorption blackboard eraser " and the patent No. are 90202440.x, its technical scheme is to adopt the minitype motor driving fan to rotate to suck dust, blackboard eraser then promotes by artificial, and the shell end face of blackboard eraser contacts blow-by with blackboard surface, this just makes in the process of crocus dirt ash, still have the part dust outwards to fly upward, thereby can not reach the purpose of complete dust suction.

The purpose of this utility model is at the deficiencies in the prior art, improves a kind of easy to use, laborsaving, dust does not escape, pick-up performance is good electric dust sucting chalk brush of design.

For achieving the above object, the technical solution of the utility model is to adopt the twin shaft micromotor, and with adjustable vertically eraser of screw relative fixed, fan attachment blade then on its rear axle makes the coaxial rotation of eraser and fan blade on its front axle; Dust escapes when preventing to erase the board, and is pressed into or screws in one at electric dust sucting chalk brush housing and blackboard contact jaw and not only sealed but also the flexible elastic tape of tool; At the some air admission holes of housing garden Zhou Kaiyou, and be furnished with the plurality of rows pore, to quicken the suction of chalk dust at the bonnet end face that is connected with housing by the spiral shell mosquito by elastic tape; Garden segmental arc in housing is provided with flour bag lid by the bonnet place, so that close flour bag when not working, prevents that dust from pouring out.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the structural representation of utility model.

Fig. 2 is that the A of Fig. 1 is to schematic diagram.

Fig. 3 is the B-B generalized section of Fig. 1.

As shown in drawings, assembly of the present utility model is to be with arc garden, garden cylinder shell 4 and to constitute with the bonnet 10 that the spiral shell mosquito is connected with it by one; One is fixed in electric case 5 and becomes the support plate 12 of 120 ° of angles to fix in the leading portion of big housings 4 with case end cap 3 interior twin shaft micromotors 6 by 5 three of electric cases, control the keying of motor by the switch 15 that is located at housing 4 appearances, on the front axle of big twin shaft micromotor 6 with screw with eraser 2 relative fixed, make it adjustable vertically, fan attachment blade 7 then on its rear axle; Front end at housing 4 is pressed into or screws in an elastic tape 1, has some air admission holes 13 on week in housing 4 gardens by elastic tape 1; Garden segmental arc in housing 4 is provided with flour bag lid 8 by the flour bag 9 of the switch 14 able to turn on or off Sheng chalk dusts that expose on the housing 4 by bonnet 10 places; 9 of flour bags are fixed in the bonnet 10, are furnished with plurality of rows pore 11 at the rear end face of bonnet 10.

Its course of work is: the socket that earlier the circumscripted power line plug of electric dust sucting chalk brush is inserted civil power 220V, press switch 15 actuating motors 6 again, press switch 14 breakdown flour bags lid 8 simultaneously, hand-held housing 4 back segments, with the blackboard of housing 4 preceding end in contact with letter written with chalk or chart, letter written with chalk or chart are wiped and are wiped by eraser 2 brushes of rotation, because the sealing function of elastic tape 1, thereby dust can not escape, again because fan blade 7 and eraser 2 coaxial rotations, make and produce negative pressure in the housing 4, so make chalk dust and be mixed into powder gas from the air of air admission hole 13, the contracted air duct after-acceleration of forming via electric case 5 and housing 4 enters flour bag 9, and air is then discharged by steam vent 11 by flour bag 9.After having wiped blackboard, promptly press switch 15 and switch 14, close motor 6 and flour bag lid 8.If eraser 2 is worn because of service time is long when serious, that is just by unscrewing the screw of fixing it, with eraser 2 forward axle head move, make it to form a plane with elastic tape, tighten screw again.In case when flour bag 9 has filled with chalk dust, then bonnet 10 is outwarded winding, the powder of outwelling in the flour bag 9 gets final product.

In sum, the utlity model has rational in infrastructure, time saving and energy saving, easy to use, dust does not escape, The advantages such as pick-up performance is good are the ideal tools of teaching.

Claims

1. electric dust sucting chalk brush, be connected to the bonnet (10) of assembly with the spiral shell mosquito by housing (1) and with it, micromotor (6), eraser (2), fan blade (7), flour bag (9), compositions such as steam vent (11) and switch, it is characterized in that micromotor (6) is a double-axis motor, on its front axle, pass through an adjustable vertically eraser of screw relative fixed (2), intrinsic fan blade (7) on its rear axle, be pressed into or screw in an elastic tape (1) at the garden week end face that the front end of housing (4) contacts with blackboard, by the some air admission holes of housing (4) garden Zhou Kaiyou (13) of elastic tape (1), the flour bag that the garden segmental arc locates to be provided with the flour bag (9) by the able to turn on or off Sheng chalk dust of switch (14) that exposes on the housing (4) by bonnet (10) housing (4) in covers (8).