CN2221501Y

CN2221501Y - Whole-plate fixed automatic dustless eraser

Info

Publication number: CN2221501Y
Application number: CN 94244896
Authority: CN
Inventors: 沙庆军
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-08
Filing date: 1994-11-08
Publication date: 1996-03-06
Anticipated expiration: 2004-11-08

Abstract

The utility model provides a whole-plate fixed automatic dustless blackboard eraser, which belongs to the teaching appliance, particularly a blackboard eraser with an automatic advancing mechanism. The utility model is composed of a working motor, a hair brush and a dust cover and is characterized in that the axis of the hair brush is provided with the gear of the hair brush. The gear of the hair brush is connected with a driven advancing gear part and a driving reversing gear part, and a support small wheel is arranged outside a gear box. The utility model has the advantages of simple structure, convenient operation, achieving the automation of the blackboard eraser and having the dustless and the pollution-free functions and makes the erasing of the blackboard achieve the dustless and clean purpose. The utility model is suitable for various teaching blackboards.

Description

The fixed Automatic dust-free blackboard of full plate is wiped

The fixed Automatic dust-free blackboard of a kind of full plate is wiped, and it belongs to a kind of teaching aid, and the fixed Automatic dust-free blackboard of full plate that particularly has automatic walking mechanism is wiped.

Existing dust-free black board eraser all is could realize the function that it erases the board with manpower.In the utility model patent that Chinese patent is recorded and narrated for ZL93201975.7 number, provide a kind of electric dust absorption wiper,, also must could realize its function when using by the hand-held wiper of human though it has realized the automation of wiper.

The purpose of this utility model is to provide a kind of and can whole erases the board, and the Automatic dust-free blackboard that has actuating unit is wiped, and reducing dust pollution, and saves manpower.

The purpose of this utility model is achieved in that

The fixed Automatic dust-free blackboard of a kind of full plate is wiped, it is by work drive motor 3, hairbrush 11, dust cover 2 is formed, the axis two ends that it is characterized in that hairbrush 11 are provided with brush gear 13, brush gear 13 places gearcase 1,4, in gearcase 1, also be provided with

passive gear

23,24 and the active tumbler gear part (accompanying drawing 2) of advancing, hairbrush 11 places dust cover 2, the axis of hairbrush 11 is linked by the axle of the belt on the belt pulley 18 with work drive motor 3, is provided with in the outside of brush gear box and supports steamboat 10,6.Initiatively the forward gear 22 and the backward gear 14 of tumbler gear part are located at respectively on the gearcase 4, change-over key 16,19 is set on gearcase, one end of the connecting rod of button is connected with tumbler gear, wherein retreat tumbler gear 15 and form one group by two gears, the tumbler gear 20 and retreating between the commutating tooth wheels 15 by crank connecting link 25 of advancing connects.On the axis of hairbrush 11, connect the small fan 21 of bleeding by driving-belt.In dust cover, also be provided with dust discharge box 12.

Operation principle of the present utility model is as follows:

Insert power supply, make work drive motor in running order, advance forward when erasing the board at the needs blackboard eraser, press forwarding button 19 earlier, when pressing under the button, the switch of starter motor 3, hairbrush 11 is rotated, because the tumbler gear 20 that advances links with forwarding button 19, on time on button 19 times, the tumbler gear 20 that advances is contacted with forward gear 22 with brush gear 13, because brush gear 13 rotates, and through the transmission of the tumbler gear 20 that advances, forward gear 22 is advanced forward, because of the rotation of hairbrush 11, blackboard is wiped clean simultaneously.When needing blackboard eraser to advance round about, can press back 16, make to retreat commutating tooth wheels 15 and contact, drive backward gear 14 and advance backward with brush gear 13 and backward gear 14.In the time of need stopping, pressing stop button 17, make tumbler gear under the drive of crank connecting link 25, break away from feeder wheel 22 or backward gear 14.

Accompanying drawing 1 is an overall structure schematic diagram of the present utility model.

Accompanying drawing 2 is a user mode schematic diagram of the present utility model.

Accompanying drawing 3 is a commutation power section schematic diagram of the present utility model.

Accompanying drawing 4 is an internal structure schematic diagram of the present utility model.

Accompanying drawing 5 is the schematic diagram of the passive gear parts of advancing of the utility model.

Following accompanying

drawing

1,2,3,4,5 is embodiment of the present utility model, and the utility model is carried out a step explanation.

The diameter of brush gear 13 is 1/3rd of a hairbrush outline diameter, requires tumbler gear 15,20 and forward gear 22 and backward gear 14 in one plane.The effect of the small fan 21 of bleeding between work drive motor 3 and gearcase 4, dust discharge box 12 can be set, owing to when erasing the board, can suck dust in the dust discharge box 12.By dress the utility model 8 time, commutation power section one end is contained in the bottom of blackboard 9, the passive travel section top that is placed in, and the support steamboat 10 of upper end is hung arm by one and is connected on the body 8, support steamboat 10 hangs in the groove of blackboard upper end, and the support steamboat 6 of lower end is embedded in the groove of blackboard bottom.

The utility model has been realized the automation of blackboard eraser, and has reached no dust, the effect of wiping.The utility model is simple in structure, and is easy to use, can be suitable for the blackboard of any size.

Claims

1, the fixed Automatic dust-free blackboard of a kind of full plate is wiped, it is by working machine (3), hairbrush (11), dust cover (2) is formed, the axis two ends that it is characterized in that hairbrush (11) are provided with brush gear (13), brush gear (13) places gearcase (1), (4) in, in gearcase (1), also be provided with the passive gear of advancing (23), (24) and initiatively tumbler gear part, hairbrush (11) places dust cover (2), the axis of hairbrush (11) is linked by the axle of the belt on the belt pulley (18) with work drive motor (3), is provided with in the outside of brush gear box and supports steamboat (10), (6).

2, the fixed Automatic dust-free blackboard of the full plate described in claim 1 is wiped, it is characterized in that initiatively the forward gear (22) and the backward gear (14) of tumbler gear part are located at respectively on the gearcase (4), change-over key (16), (19) are set on gearcase, one end of the connecting rod of button is connected with tumbler gear, wherein retreat tumbler gear (15) and form one group by two gears, the tumbler gear that advances (20) and retreating between the commutating tooth wheels (15) is connected by crank connecting link (25).

3, the fixed Automatic dust-free blackboard of the full plate described in claim 1 is wiped, and it is characterized in that on the axis of hairbrush (11) connecting the small fan (21) of bleeding by driving-belt.

4, the fixed Automatic dust-free blackboard of the full plate described in claim 1 is wiped, and it is characterized in that also being provided with in dust cover dust discharge box (12).