CN208498078U

CN208498078U - A kind of blackboard eraser dustproof device

Info

Publication number: CN208498078U
Application number: CN201820527265.0U
Authority: CN
Inventors: 郝倩倩; 沙岚
Original assignee: HENAN RADIO & TELEVISION UNIVERSITY
Current assignee: HENAN RADIO & TELEVISION UNIVERSITY
Priority date: 2018-04-13
Filing date: 2018-04-13
Publication date: 2019-02-15
Anticipated expiration: 2028-04-13

Abstract

The utility model provides a kind of blackboard eraser dustproof device, it includes upper level frame, lower level frame, keeps off grey curtain, hook and device for blackboard eraser, the rear end of the upper level frame is equipped with vertical mounting base, the front end of the upper level frame is equipped with spool, the grey curtain installation of the gear is on said reel, the hook is mounted on the lower end for keeping off grey curtain, and the lower level frame corresponds to the hook and is equipped with hanging groove, and the lower level frame is equipped with inclined Sheng ash-pit；The device for blackboard eraser includes being mounted on shaft at the top of blackboard at two corners, the swing arm being fixed in the shaft and the blackboard eraser portion being mounted in the swing arm, the shaft to be swung by a motor driven.The blackboard eraser dustproof device has the advantages that design science, prevents dust, plays a protective role to the breathing environment of student and teacher.

Description

A kind of blackboard eraser dustproof device

Technical field

The utility model relates to a kind of device for blackboard eraser, specifically, relate to a kind of blackboard eraser dustproof device.

Background technique

Blackboard dust problem in teaching annoyings always in education sector, especially secondary and high school life, and teaching is appointed Business weight, writing on the blackboard amount is huge, has great dust to generate daily, is air-dried in winter in spring, and respiratory tract is sensitive, easily causes The respiratory tract infection of academics and students.

Although there is some blackboard erasers that can prevent dust on the market, most of principle using sucktion fan is realized, That its ability is limited, in use for some time will it is out of power or failure, the service life is too poor, the device of some automatic blackboard cleanings It is equally, although realizing auto-erasing, the dust problem of blackboard has not been able to solve.

In order to solve the above problems, people are seeking always a kind of ideal technical solution.

Summary of the invention

The purpose of this utility model is in view of the deficiencies of the prior art, to provide a kind of design science, prevent dust, is right The blackboard eraser dustproof device that the breathing environment of student and teacher play a protective role.

To achieve the goals above, the technical scheme adopted by the utility model is a kind of blackboard eraser dustproof device, it is wrapped It includes level frame, lower level frame, keep off grey curtain, hook and device for blackboard eraser, the rear end of the upper level frame is equipped with vertical peace Seat is filled, the front end of the upper level frame is equipped with spool, and on said reel, the hook is mounted on institute to the grey curtain installation of the gear The lower end for keeping off grey curtain is stated, the lower level frame corresponds to the hook and is equipped with hanging groove, and the lower level frame is equipped with inclined Sheng Ash-pit；The device for blackboard eraser includes the swing arm and peace for being mounted on shaft at the top of blackboard at two corners, being fixed in the shaft Blackboard eraser portion in the swing arm, the shaft are rotated by a motor driven.

It is described on base, matched travel switch, the position of the travel switch are installed respectively in the upper end of blackboard and two sides The corresponding swing arm setting, after the travel switch association motor encounters travel switch so as to the swing arm, the motor Commutation reversion.

Described on base, the sum of length of two swing arms at two corners at the top of blackboard is greater than the width of the blackboard.

Described on base, the spool is equipped with the scroll spring for promoting the spool to reset.

The utility model has substantive features and progress compared with the prior art, and specifically, the utility model utilizes curtain Blackboard directly is covered, is then wiped clean blackboard using automatic device for blackboard eraser, later pull-up curtain again by cloth structure, Then it writes, blackboard eraser environment and classroom environment is completely cut off, directly avoid fugitive dust to indoor floating, it is simple and effective, have Design science, the advantages of preventing dust, playing a protective role to the breathing environment of student and teacher.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of blackboard eraser dustproof device in the utility model.

Fig. 2 is the structural schematic diagram that swing arm is laid out in the utility model.

In figure: level frame on 1.；2. lower level frame；3. keeping off grey curtain；4. hook；5. spool；6. shaft；7. swing arm； 8. blackboard eraser portion；9. travel switch.

Specific embodiment

Below by specific embodiment, the technical solution of the utility model is described in further detail.

As depicted in figs. 1 and 2, a kind of blackboard eraser dustproof device, it includes upper level frame 1, lower level frame 2, keeps off grey curtain 3, hook 4 and device for blackboard eraser, the rear end of the upper level frame 1 are equipped with vertical mounting base, which is used for upper level Frame 1 is fixed on the wall, can by the conventional fixed form such as bolt or nail, mainly in view of the load-bearing of upper level frame 1 compared with Greatly, the front end of the upper level frame is equipped with spool 5, and the spool 5 is equipped with the scroll spring for promoting the spool to reset, described It keeps off grey curtain 3 to be mounted on the spool 5, the hook 4 is mounted on the lower end for keeping off grey curtain 3, and the lower level frame 2 is right It answers the hook to be equipped with hanging groove, in use, holding hook 4, grey curtain 3 will be kept off and pulled down, the hanging groove of the lower level frame 2 of lower section is hung over Hook when packing up, unclamps in place, under the action of scroll spring, keeps off grey curtain 3 and is packed up automatically, on the lower level frame 2 Equipped with inclined Sheng ash-pit, dust falls into Sheng ash-pit, avoids pollution environment, collects chalk in the lower end exit installation for containing ash-pit The grey bag of ash collects chalk dust.

The device for blackboard eraser includes the swing arm for being mounted on shaft 6 at the top of blackboard at two corners, being fixed in the shaft 6 7 and the blackboard eraser portion 8 that is mounted in the swing arm 7, the shaft 6 is rotated by a motor driven, with most of device for blackboard eraser Principle it is similar, only installation site different from, since inside is isolated from the outside completely, using this large area and structure letter Single method for deleting, structural complexity are lower, it is easier to manufacture, be also easier to repair after damage, avoid the blackboard eraser of rail mounted Slight deformation is encountered existing for structure results in the problem of not being available.

In order to improve erasing clean level, matched travel switch 9, the row are installed respectively in the upper end of blackboard and two sides The position of Cheng Kaiguan 9 corresponds to the swing arm 7 and is arranged, and the travel switch 9 is associated with the motor so that stroke is encountered in the swing arm After switch 9, the motor commutation reversion, teacher only needs to control the switch of motor, controls the working time, without considering pendulum The oscillating stroke problem of arm.

The sum of length of two swing arms at two corners at the top of blackboard is greater than the width of the blackboard, whole can wipe Subject to a blackboard.

Above the specific descriptions of the utility model are intended to illustrate with the implementation of specific embodiment, is not to be construed as Limitations of the present invention.Those of ordinary skill in the art, can be in the embodiment party of detailed description under the introduction of the utility model Various variants are made on the basis of case, these variants should be included within the design of the utility model.The utility model is wanted The range of protection is asked only to be limited by described claims.

Claims

1. a kind of blackboard eraser dustproof device, it is characterised in that: it includes upper level frame, lower level frame, keeps off grey curtain, hook and black Board wiping device, the rear end of the upper level frame are equipped with vertical mounting base, and the front end of the upper level frame is equipped with spool, the gear On said reel, the hook is mounted on the lower end for keeping off grey curtain to the installation of grey curtain, described in the lower level frame is corresponding Hook is equipped with hanging groove, and the lower level frame is equipped with inclined Sheng ash-pit；The device for blackboard eraser includes being mounted at the top of blackboard Shaft, the swing arm being fixed in the shaft at two corners and the blackboard eraser portion being mounted in the swing arm, the shaft is by one Motor driven rotation.

2. a kind of blackboard eraser dustproof device according to claim 1, it is characterised in that: distinguish in the upper end of blackboard and two sides Matched travel switch is installed, the position of the travel switch corresponds to the swing arm setting, and the travel switch is associated with the electricity After machine encounters travel switch so as to the swing arm, the motor commutation reversion.

3. a kind of blackboard eraser dustproof device according to claim 2, it is characterised in that: two at two corners at the top of blackboard The sum of length of a swing arm is greater than the width of the blackboard.

4. a kind of blackboard eraser dustproof device according to claim 3, it is characterised in that: the spool is described equipped with promoting The scroll spring that spool resets.