CN206485113U - Blackboard eraser for teaching - Google Patents

Abstract

The utility model discloses a kind of blackboard eraser for teaching, including housing, the front end face of housing sets wiping body, housing lower end sets dust-collecting box, air exhauster is set in housing, housing rear end face sets power slot, switch and power supply, housing lower surface sets dust export, dust export two ends are connected with accommodating chamber and dust-collecting box respectively, housing sets multiple air suction openings close to the end face of wiping body, air suction opening is connected with accommodating chamber, the front end face edge of housing sets rubber flap, the front end face of rubber flap sets pressure sensitive module, pressure sensitive module output end electrically connects control module, the opening and closing of control module controlling switch, the side wall of dust-collecting box sets exhaust vent, one end that exhaust vent is located in dust-collecting box sets screen pack.The utility model realizes automatic dust removing, effectively save manpower by automatic control structure.

Description

Blackboard eraser for teaching

Technical field

The utility model is related to a kind of teaching aid, more particularly, to a kind of blackboard eraser for teaching.

Background technology

In daily teaching engineering, blackboard and the most common educational aid of chalk, teacher enumerate the knowledge point for needing to inculcate Knowledge is taught to classmates on to blackboard, writing on the blackboard needs the chalk on blackboard wiping to take down notes after finishing, due in classroom in writing on the blackboard Hold more, it is necessary to repeatedly erasable, but conventional blackboard eraser easily causes chalk dust in wiping process and flown away in atmosphere. Because chalk dust particle diameter is 7-100 microns, but the particle of 7-10 microns of diameter can enter human body with breathing Lung, cause the decline of lung respiratory function, be harmful to the healthy of Faculty and Students.

Application number 201310504721.1 disclose one kind can blackboard eraser capable of removing accumulated dust, including housing wipes band, and rotating cylinder turns Axle, fagging, laying dust brush, bonnet, connector.The housing is a cavity, and cavity has an opening, after having one on the opposite of opening Lid, bonnet is connected on cavity by the connector, covers housing.There are a pair of shaft parallel connections on the housing, institute State rotating cylinder to be respectively fitted in the rotating shaft, the band of wiping is a closure soft ribbons, is socketed on two rotating cylinder, band side is wiped after socket Flat segments stretch out housing opening, for brushing blackboard.A fagging is provided between two rotating cylinders, fagging two ends are fixedly connected on On housing, the wiping band flat segments of shell nozzle are stretched out for supporting.The dust that the invention is taken by laying dust brush to wiping is wiped Wipe, but the problem of dust is scattered in wiping process can not be solved.

Utility model content

In view of this, the purpose of this utility model is that there is provided a kind of blackboard eraser for teaching, sheet in view of the shortcomings of the prior art Utility model is by automatic control structure, and the structures such as multiple dust suctions, dedusting of arranging in pairs or groups realize automatic dust removing, efficiently solve wiping black The problem of chalk dust disperses during plate.

To reach above-mentioned purpose, the utility model uses following technical scheme：

Blackboard eraser for teaching, including housing, the front end face of the housing set wiping body, and the housing lower end sets dust Set in box, the housing and air exhauster is set in accommodating chamber, the accommodating chamber, the housing rear end face sets power slot, switch With the power supply in power slot, the housing lower surface sets dust export, and the dust export two ends are accommodated with described respectively Chamber is connected with dust-collecting box, and the housing sets multiple air suction openings close to the end face of wiping body, and the air suction opening is accommodated with described Chamber is connected, and the front end face edge of the housing sets rubber flap, the front end face of the rubber flap and the front end of wiping body Face is generally aligned in the same plane and the front end face of rubber flap sets pressure sensitive module, the pressure sensitive module output end electrical connection Control module, the control module controls the opening and closing of the switch, and the side wall of the dust-collecting box sets exhaust vent, described One end that exhaust vent is located in dust-collecting box sets screen pack.

Further, the dust export and air suction opening are pyramidal structure, and one end that the dust export is relatively large in diameter is close Accommodating chamber is set, and one end that the air suction opening is relatively large in diameter is set close to wiping body.

Further, the housing rear end face sets handle.

Further, the dust-collecting box lower end is hinged out dirt plate.

Further, the dust export is circular configuration, and the accommodating chamber bottom is pyramidal structure.

The beneficial effects of the utility model are：

1. the utility model sets dust-collecting box in housing lower end, dust-collecting box can be with the convenient dismounting of housing grafting and cleaning powder Set in dust, housing and air exhauster is set in accommodating chamber, accommodating chamber, housing rear end face sets power slot, switchs and be arranged on Power supply in power slot, switch can use electronic switch, and power supply, switch and air exhauster are composed in series performance loop, housing Front end face edge sets rubber flap, and the front end face of rubber flap sets pressure sensitive module, pressure sensitive module output end electricity Link control module, the opening and closing of control module controlling switch, housing lower surface sets dust export, dust export two ends difference It is connected with accommodating chamber and dust-collecting box, housing sets multiple air suction openings close to the end face of wiping body, and air suction opening is connected with accommodating chamber It is logical；

The utility model when in use, after rubber flap contact blackboard, receive extruding and transmit a signal to control by pressure sensitive module Molding block, control module controlling switch closure air exhauster work, chalk dust is sucked in accommodating chamber and passed through by air suction opening Dust export is dropped down onto in dust-collecting box, while the front end face edge of housing sets rubber flap to be effectively reduced the airborne dust in wiping process Amount, sets exhaust vent purpose to ensure the cross-ventilation in accommodating chamber and dust-collecting box, is effectively reduced exhausting in the side wall of dust-collecting box Collection dust quantity on machine improves its service life, while setting screen pack effectively to prevent powder in one end that exhaust vent is located in dust-collecting box The phenomenon that dust is discharged out of exhaust vent occurs, and wherein screen pack can be using 2-5 microns of the prior art of screen pack Can.

2. dust export is pyramidal structure, one end that dust export is relatively large in diameter is set close to accommodating chamber, can also be by dust export Circular configuration is designed as, accommodating chamber bottom is pyramidal structure, and above two structure design not only contributes to chalk dust from receiving Intracavitary is fallen into dust-collecting box, and the chalk dust backflow effectively in prevention dust-collecting box, improves the cleanliness factor of air exhauster；Air suction opening The one end being relatively large in diameter is set close to wiping body, this structure design from the area of increase air suction opening front end be starting point, can be effective Improve the suction speed of chalk dust.

3. housing rear end face sets handle, this structure design is not used merely with crawl when using, while can also be by this Utility model suspension is placed, and prevents maloperation build-up of pressure induction module voluntarily works from causing power wastage.

4. dust-collecting box lower end is hinged out dirt plate, chalk dust can be purged by opening out dirt plate, with operation just Prompt advantage.

Brief description of the drawings

Fig. 1 is the main structure diagram of the utility model embodiment one.

Fig. 2 is Fig. 1 right side structural representation.

Fig. 3 is the structural representation of the utility model embodiment two.

Label in figure：1- housings, 2- wiping bodies, 3- dust-collecting boxes, 4- accommodating chambers, 5- air exhausters, 6- power slots, 7- goes out dirt Hole, 8- air suction openings, 9- rubber flaps, 10- exhaust vents, 11- screen packs, 12- goes out dirt plate, and 13- is switched, 14- pressure sensitive modules, 15- control modules, 16- handles.

Embodiment

The utility model is further described with reference to the accompanying drawings and examples.

Embodiment one

As depicted in figs. 1 and 2, the utility model includes housing 1, and housing 1 is rectangular parallelepiped structure, and the front end face of housing 1 is pacified Wiping body 2 is filled, wiping body 2 is provided with gap, the lower end grafting dust-collecting box 3 of housing 1, housing 1 for four pieces and between adjacent and opens up appearance Receive chamber 4, air exhauster 5 is installed in accommodating chamber 4, the rear end face of housing 1 opens up power slot 6, switch 13 and handle 16, and power slot 6 is built-in Some power supplys（It is not shown）, power supply, switch 13 and the composition series loop of air exhauster 5, relay can be used by switching 13, and power supply is adopted There is provided electric energy to air exhauster 5 with rechargeable battery, the lower surface of housing 1 opens up dust export 7, the two ends of dust export 7 respectively with accommodating chamber 4 It is connected with dust-collecting box 3, dust export 7 is pyramidal structure, one end that dust export 7 is relatively large in diameter is set close to accommodating chamber 4, housing 1 Multiple air suction openings 8 are set close to the end face of wiping body 2, air suction opening 8 is the close wiping of pyramidal structure and its one end being relatively large in diameter Body 2 is set, and air suction opening 8 is located at the both sides of wiping body 2 and is connected with accommodating chamber 4；

The front end face marginal adhesion rubber flap 9 of housing 1, the front end face of the front end face and wiping body 2 of rubber flap 9 is located at The front end face of same plane and rubber flap 9 buries pressure sensitive module 14, the electrical connection control of the output end of pressure sensitive module 14 Module 15, control module is arranged in housing 1 the simultaneously opening and closing of controlling switch 13, and the side wall of dust-collecting box 3 opens up exhaust vent 10, one end that exhaust vent 10 is located in dust-collecting box 3 is provided with screen pack 11, and screen pack 11 is be bonded with dust-collecting box 3.

Embodiment two

The present embodiment and the structure of embodiment one are essentially identical, unlike：As shown in figure 3, the lower end of dust-collecting box 3 is hinged out Dirt plate 12, dust export 7 is circular configuration, and the bottom of accommodating chamber 4 is pyramidal structure, and this structure in use, removes chalk Dust can be carried out by opening out dirt plate 12, have the advantages that simple operation.

Finally illustrate, above example only to illustrate the technical solution of the utility model and unrestricted, this area Other modifications or equivalent substitution that those of ordinary skill is made to the technical solution of the utility model, without departing from this practicality The spirit and scope of new technique scheme, all should cover among right of the present utility model.

Claims (2)

1. blackboard eraser for teaching, including housing, the front end face of the housing set wiping body, it is characterised in that：Under the housing End, which sets to set in dust-collecting box, the housing, sets air exhauster in accommodating chamber, the accommodating chamber, the housing rear end face sets electricity Source slot, switch and the power supply in power slot, the housing lower surface set dust export, the dust export two ends respectively with The accommodating chamber is connected with dust-collecting box, and the housing sets multiple air suction openings close to the end face of wiping body, the air suction opening with The accommodating chamber is connected, and the front end face edge of the housing sets rubber flap, the front end face of the rubber flap and wiping The front end face of body is generally aligned in the same plane and the front end face of rubber flap sets pressure sensitive module, the pressure sensitive module output End electrical connection control module, the control module controls the opening and closing of the switch, and the side wall of the dust-collecting box is set out Air holes, one end that the exhaust vent is located in dust-collecting box sets screen pack, and the dust export and air suction opening are pyramidal structure, institute State one end that dust export is relatively large in diameter to set close to accommodating chamber, one end that the air suction opening is relatively large in diameter is set close to wiping body, The housing rear end face sets handle, and the dust-collecting box lower end is hinged out dirt plate.

2. blackboard eraser for teaching according to claim 1, it is characterised in that：The dust export is circular configuration, the appearance Chamber bottom is received for pyramidal structure.