CN200998972Y

CN200998972Y - Electric magnetic blackboard eraser

Info

Publication number: CN200998972Y
Application number: CNU2007201056048U
Authority: CN
Inventors: 杨益民
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-12
Filing date: 2007-01-12
Publication date: 2008-01-02
Anticipated expiration: 2017-01-12

Abstract

An electromotion magnetism eraser is provided, which is provided with a steel blackboard, a rack is arranged on and down the steel blackboard, and a motor. The motor drives a rotating axle which is arranged with a gear, the gear is hinged with the rack, a gear box is arranged outside the upper gear and the lower gear, a frame is connected with the gear box, the frame is connected with the magnetism eraser which is composed of an inserted magnet and a out covering erasing component. The utility model is characterized in that: the motor is that: the two ends of the motor are arranged a speed change gear which is hinged with a speed reducing gear, the speed reducing gear is connected with the upper rotating axle and the lower rotating axle respectively, an upper gear is arranged on the upper rotating head, the upper gear is hinged with the upper rack, the lower rotating head is arranged with a lower gear, the upper gear and the lower gear are hinged with each other. The motor in the scheme is as being arranged at the middle of the rotating axle, the upper rotating axle and the lower rotating axle are arranged with a gear respectively, the gear and the rack are hinged with each other when running, drag the magnetism eraser to move to erase the chalk characters on the blackboard, the two ends of the motor has light load with long service life.

Description

Electric magnetic blackboard eraser

Technical field

The utility model relates to the blackboard eraser that erases the board, and particularly relates to electric magnetic blackboard eraser, is applicable to the letter written with chalk of wiping on the steel blackboard (comprising blank, green plate) (comprising water-color paintbrush word etc.), belongs to realia.

Background technology

Blackboard is one of common tool of teaching, has developed green plate, blank etc. in recent years again, and the material of making blackboard develops into steel plate from plank, and the pen that writes has also been developed various water-color paintbrushes etc. except chalk.Blackboard is a kind of instrument that can write repeatedly, uses easily, and be a very antihygienic thing but erase the board, dust pollution air, environment and both hands erase the board and are more tired.Thus, the inventor had once applied for magnetic sheet scrape along lead agency, Chinese patent ZL02261127.4 number, and by the driven by motor blackboard eraser, dust pollution both hands etc. in the time of can avoiding erasing the board, one of the blackboard auxiliary products big invention really.But in the ZL02261127.4 patent, still exist following shortcoming: the one, motor is installed in of main shaft, and needs of main shaft drive two groups of gears and drag magnetic blackboard eraser again, and the motor shaft single head is stressed excessive, damages easily; The 2nd, the contact of wheel and rack cooperation place is unreasonable, and running resistance is big, has increased the load of motor; The 3rd, long when the polishing piece working time one, the surface is stained with a lot of powder, can not get clearing up timely, has seriously influenced wiping effect.

Summary of the invention

The purpose of this utility model is in order to overcome the shortcoming of prior art, and it is light to provide a kind of motor to drag load, and power consumption is economized, long service life, and gear assembly is reasonable with cooperating of tooth bar, and can in time remove polishing piece on powder, the electric magnetic blackboard eraser that wiping effect is good.

The technical scheme of the utility model electric magnetic blackboard eraser is: a steel blackboard is arranged, the tooth bar of installation up and down at the steel blackboard, other has motor, the driven by motor rotating shaft, gear is installed in rotating shaft, wheel and rack is meshed, on, lower gear has gear-box outward, gear-box connects support, support connects magnetic blackboard eraser, and magnetic blackboard eraser is an embedded magnet and wrap up in polishing piece outward and form, and it is characterized in that two that described motor is spool installs change-speed gearing respectively, change-speed gearing is meshed with reduction gearing, reduction gearing connects rotating shaft and lower rotary shaft respectively, and last shaft head is installed gear, and cogging is meshed with upper rack, the lower rotary shaft head is installed lower gear, and lower gear is meshed with following tooth bar.

Electric magnetic blackboard eraser of the present utility model, its motor is equivalent to be installed in the middle part (upper and lower any point) of rotating shaft, upper and lower rotating shaft is installed respectively, lower gear so have, upper and lower gear and upper and lower tooth bar engagement during work, drag magnetic blackboard eraser and shift to the other end,, in mobile, wipe letter written with chalk on the blackboard because magnetic blackboard eraser tightly is inhaled on the surface of steel blackboard from of blackboard, motor double headed roller dynamic load is light, long service life.

Electric magnetic blackboard eraser of the present utility model, vertical pulley of installation and horizontal pulley in its upper and lower gear-box, vertically pulley and horizontal pulley match with tooth bar and framework, and the vertical, horizontal pulley has been arranged, and the one, play the location of sliding, the 2nd, it is very light to slide.Cleaning is installed in one of its blackboard draws together brush (hairbrush and so on), the cleaning wiper has been arranged, when magnetic blackboard eraser removes a powder on the polishing piece during by this place, maintenance totally, wiping effect is good.

Description of drawings

Fig. 1 is the utility model electric magnetic blackboard eraser structural representation;

Fig. 2 is that the utility model electric magnetic blackboard eraser A is to schematic diagram;

Fig. 3 is that the gear-box and the vertical, horizontal pulley of the utility model electric magnetic blackboard eraser cooperates schematic diagram with tooth bar and support.

The specific embodiment

The utility model relates to electric magnetic blackboard eraser, as shown in Figure 1-Figure 3, a steel blackboard 1 is arranged, on steel blackboard 1, under tooth bar 5 is installed, 6, on blackboard, limited position, following

corner device

11,12,13,14, other has motor 8, the driven by motor rotating shaft, gear is installed in rotating shaft, wheel and rack is meshed, on, lower gear has gear-box 7 outward, gear-box connects support 9, support 9 connects magnetic blackboard eraser 10, its connected mode is that support 9 has hook 3, magnetic blackboard eraser 10 has draw ring 4, hook 3 is connected with draw ring 4, but also can be other connected mode, magnetic blackboard eraser 10 is an embedded magnet 16 and wrap up in polishing piece 17 outward and form, shell 15 is arranged outside the support 9, its major technology be characterised in that described motor 8 be the axle two change-speed gearing 85 is installed respectively, 87, change-

speed gearing

85,87 are meshed with reduction gearing 86, and reduction gearing connects rotating shaft 81 and lower rotary shaft 82 respectively, and last rotating shaft 81 heads are installed gear 83, cog and 83 be meshed with upper rack 51, lower rotary shaft 82 heads are installed lower gear 84, and lower gear 84 is meshed with following tooth bar 52 during work, drag magnetic blackboard eraser and shift to the other end from of blackboard, because the tight surface of inhaling of magnetic blackboard eraser at the steel blackboard, wipe letter written with chalk on the blackboard in moving, it is light that motor two drives the transmission mechanism load respectively, long service life.

Vertical pulley

71,72 and

horizontal pulley

73,74 are installed in its upper and lower gear-box 7, vertically pulley and horizontal pulley match with

tooth bar

51,52 and

framework

53,54, vertical, horizontal pulley one is to play the positioning action that slides, the 2nd, it is very light to slide, the wheel and rack running resistance is little, and motor load alleviates.Cleaning is installed in one of its blackboard 1 draws together brush 2, cleaning wiper 2 is bonding plastics frames 21 on blackboard, and embedding hairbrush 22 materials such as grade in the frame when magnetic blackboard eraser makes a powder that removes on the polishing piece by this place, keep clean, and wiping effect is good.

Claims

1, electric magnetic blackboard eraser, a steel blackboard is arranged, the tooth bar of installation up and down at the steel blackboard, other has motor, the driven by motor rotating shaft, gear is installed in rotating shaft, wheel and rack is meshed, on, lower gear has gear-box outward, and gear-box connects support, and support connects magnetic blackboard eraser, magnetic blackboard eraser is an embedded magnet and wrap up in polishing piece outward and form, it is characterized in that described motor (8) be the axle two change-speed gearing (85 is installed respectively, 87), change-speed gearing (85,87) be meshed with reduction gearing (86), reduction gearing connects rotating shaft (81) and lower rotary shaft (82) respectively, last rotating shaft (81) head is installed gear (83), cog (83) be meshed with upper rack (51), lower rotary shaft (82) head is installed lower gear (84), lower gear (84) is meshed with following tooth bar (52).

2, electric magnetic blackboard eraser as claimed in claim 1 is characterized in that middle vertical pulley (71,72) and the horizontal pulley (73,74) installed of upper and lower gear-box (7), and vertically pulley and horizontal pulley match with tooth bar (51,52) and framework (53,54).

3, electric magnetic blackboard eraser as claimed in claim 1 is characterized in that installing among of blackboard (1) cleaning and draws together brush (2).