CN203752756U

CN203752756U - Blackboard cleaning device

Info

Publication number: CN203752756U
Application number: CN201420109038.8U
Authority: CN
Inventors: 黄晓雪
Original assignee: Chongqing Normal University
Current assignee: Chongqing Normal University
Priority date: 2014-03-11
Filing date: 2014-03-11
Publication date: 2014-08-06
Anticipated expiration: 2024-03-11

Abstract

The utility model discloses a blackboard cleaning device which comprises a box body, a cleaning body, a connecting component and an operating rod. The connecting component comprises a rotary plate and a connector which is hinged to the rotary plate and connected with the operating rod, the rotary plate and the box body can relatively rotate, the operating rod comprises a first rod body and a second rod body, the first rod body is sleeved with the second rod body, the two rod bodies can relatively slide, three or more evenly-spaced locating holes are formed in the second rod body, the upper end of the first rod body is elastically connected with a button matched with the locating holes, and the lower end of the first rod body is connected with the connector through a thread pair. The cleaning body comprises a hair eraser and a soft eraser, the hair eraser is formed by continuously arranging eraser hairs around the bottom of the box body, the soft eraser is arranged in the hair eraser, the hair eraser protrudes out of the bottom face of the soft eraser, and the soft eraser is abrasion resistant soft foam or a sponge. Through the telescopic operating rod, short students can clean the high position of a blackboard without a stool, most of generated dust is limited in the area defined by the hair eraser, and the amount of the spread dust is reduced.

Description

Blackboard cleaning device

Technical field

The utility model relates to a kind of teaching tool, particularly a kind of blackboard cleaning device.

Background technology

Blackboard is the requisite teaching equipment of each school, when teachers' instruction, carries out writing on the blackboard with chalk, and with blackboard cleaning device as blackboard eraser remove chalk writing with recycling.Existing blackboard cleaning device generally includes box body and is located at the clean body of box body bottom, cleans by the friction on clean body and blackboard surface.At least there is two large problems in this blackboard cleaning device: first, what most school was used remains fixed blackboard, be that blackboard is fixedly mounted on wall, can not easy on and off lifting, also make thus the part of blackboard higher position be not easy to clean, particularly in middle and primary schools, blackboard cleaning is mainly undertaken by student, the student comparatively short and small for stature cannot clean position higher on blackboard, often need to carry out padded operation by stool, not only increase the labour intensity of cleaning, and student stands on stool the position of often not noting underfooting when clean, easily throw, there is certain potential safety hazard, the second, clean body is generally bristle, with the process of blackboard mantle friction in can fall a lot of dust, dust flies away in classroom, not only contaminated environment, and also dust is easy to suck in respiratory tract, the long-term probability of bringing out respiratory disease that in the past increased, is unfavorable for that teachers and students' is healthy.

Therefore, be necessary existing blackboard cleaning device to improve, the people who makes it easy to different heights carries out clean operation, alleviates the labour intensity of cleaning, prevents the generation of security incident, reduces flying away of the dust that produces in cleaning course simultaneously.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of blackboard cleaning device, and the people of being convenient to different heights carries out clean operation, alleviates the labour intensity of cleaning, prevents the generation of security incident, reduces flying away of the dust that produces in cleaning course simultaneously.

Blackboard cleaning device of the present utility model, comprise box body and be located at the clean body of described box body bottom, also comprise coupling assembling and the action bars of being located at described box body top, described coupling assembling comprises rotating disk and is hinged on the joint being connected on described rotating disk and with described action bars, between described rotating disk and described box body, can relatively rotate, described action bars at least comprises the first bar and the second bar, described the first bar is inserted between the inside of described the second bar and two bars can relative sliding, on described the second bar, have the identical locating hole in more than three interval, the upper end of described the first bar is elasticly connected with the button matching with described locating hole, described the second bar and the first bar are located by connecting by described locating hole and button activity, between the lower end of described the first bar and described joint, be connected by screw thread pair, described clean body comprises hair rub and soft wiping, and described hair rub is located at continuously described box body bottom surrounding by snag and is formed, and described soft wiping is located in described hair rub, and described hair rub exceeds the bottom surface of described soft wiping, and described soft wiping is wear-resisting flexible foam or sponge.

Further, the side indent of described box body is formed for placing the accommodation chamber of chalk, is also connected with the sliding arm-tie for sealing and open described accommodation chamber on described side.

Further, described hair rub outward.

Further, described box body is rectangular structure, and described rotating disk is located at the end face middle part of described box body.

Further, the upper end of described the second bar is provided with laser designator and for controlling the switch of described laser designator.

The beneficial effects of the utility model: blackboard cleaning device of the present utility model, rotating disk can rotate freely, and joint and rotating disk are hinged, makes thus joint to rotate freely and to move, and drive rotation and the movement of expansion link, be convenient to the diverse location of blackboard to clean; Action bars forms extension type structure, button passes from any locating hole, limit the length of action bars, after only need pressing the button, pull the second bar in the time that needs change length, in the time moving to the position of positioning hole of appropriate length, button can pass from locating hole, block locating hole and position and prevent that the first bar from moving, length conversion flexibly makes student of short and small stature without cleaning the higher position of blackboard by stool is padded, alleviate the labour intensity of cleaning, prevent the generation of security incident, also make operation lever structure become compact simultaneously; The first bar and joint are spirally connected, and are convenient to dismantle and install; Clean body is used the combination of hair rub and soft wiping, and soft wiping is enclosed by hair rub, in the time cleaning, hair rub is out of shape because of pressurized, in the region that soft wiping forms in hair rub all the time, slide, thus the dust producing also major part be limited in the region that hair rub encloses, reduce the amount of flying away of dust; The utility model is simple in structure, easy to use, has very strong application value.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is further described:

Fig. 1 is perspective view of the present utility model;

Fig. 2 is upward view of the present utility model.

Detailed description of the invention

Fig. 1 is perspective view of the present utility model, Fig. 2 is upward view of the present utility model, as shown in the figure: the blackboard cleaning device of the present embodiment, comprise box body 1 and be located at the clean body of described box body 1 bottom, also comprise coupling assembling and the action bars of being located at described box body 1 top, described coupling assembling comprises rotating disk 21 and is hinged on the joint 22 being connected on described rotating disk 21 and with described action bars, between described rotating disk 21 and described box body 1, can relatively rotate, described action bars at least comprises the first bar 31 and the second bar 32, described the first bar 31 is inserted between the inside of described the second bar 32 and two bars can relative sliding, on described the second bar 32, have three locating holes 4 that interval is identical, the upper end of described the first bar 31 is elasticly connected with the button 5 matching with described locating hole 4, described the second bar 32 is connected by described locating hole 4 and button 5 activity orientation with the first bar 31, between the lower end of described the first bar 31 and described joint 22, be connected by screw thread pair, described clean body comprises hair rub 61 and soft wiping 62, described hair rub 61 is located at continuously described box body 1 bottom surrounding by snag and is formed, described soft wiping 62 is located in described hair rub 61, and described hair rub 61 exceeds the bottom surface of described soft wiping 62, and described soft wiping 62 is wear-resisting flexible foam or sponge, the installation main body that box body 1 is this device, miscellaneous part is all provided thereon, box body 1, coupling assembling and action bars both can be made up of rigid plastics, also can be made of metal, as long as possess applicable intensity, rotating disk 21 is rounded, the end face contact of its bottom surface and box body 1 also can rotate freely on parallel all the time basis keeping, joint 22 is hinged with rotating disk 21, make thus joint 22 to rotate freely and to move, and drive rotation and the movement of expansion link, be convenient to the diverse location of blackboard to clean, the first bar 31 and the second bar 32 all have hollow structure, the length of the first bar 31 is greater than the length of the second bar 32, the internal diameter of the external diameter of the first bar 31 and the second bar 32 is suitable, make action bars form extension type structure, between button 5 and the first bar 31, stage clip is set, button 5 passes from any locating hole 4, limit the length of action bars, only need press the button 5 in the time that needs change length after, pull the second bar 32, in the time moving to locating hole 4 position of appropriate length, button 5 can pass from locating hole 4, block locating hole 4 and position and prevent that the first bar 31 from moving, length conversion flexibly makes student of short and small stature without cleaning the higher position of blackboard by stool is padded, alleviate the labour intensity of cleaning, prevent the generation of security incident, also make operation lever structure become compact simultaneously, the first bar 31 is threaded with joint 22, is convenient to dismantle and install, clean body is used the combination of hair rub 61 and soft wiping 62, soft wiping 62 is enclosed by hair rub 61, in the time cleaning, hair rub 61 is out of shape because of pressurized, in the region that soft wiping 62 forms in hair rub 61 all the time, slide, thereby the dust producing also major part is limited in the region that hair rub 61 encloses, and reduces the amount of flying away of dust.

In the present embodiment, the side indent of described box body 1 is formed for placing the accommodation chamber 7 of chalk, is also connected with the sliding arm-tie 8 for sealing and open described accommodation chamber 7 on described side; Side can be both a side of box body 1, can be also the both sides of box body 1; Chalk is placed in accommodation chamber 7, allows user use more conveniently, to save time; Sliding arm-tie 8 is baffle plate, and it comprises left and right two slide plates, and two slide plates are all stuck in the groove of box body 1 side, and left skateboard at interior, right slide plate outside, can be realized the sealing of accommodation chamber 7 and be opened by the relative position of mobile two slide plates.

In the present embodiment, described hair rub 61 outwards; It is outward the outside of box body 1; Hair rub 61 outwards are that outside is all partial in snag, have avoided that snag is most advanced and sophisticated directly to rub mutually with blackboard surface, thereby have maked somebody a mere figurehead to a certain extent the cleaning function of hair rub 61, hair rub 61 the formed dust that rubs in minimizing cleaning course.

In the present embodiment, described box body 1 is rectangular structure, and described rotating disk 21 is located at the end face middle part of described box body 1; Rectangular structure is convenient to processing and manufacturing, and rotating disk 21 makes the movement of box body 1 more reasonable in the middle of being located at.

In the present embodiment, the upper end of described the second bar 32 is provided with laser designator 91 and for controlling the switch 92 of described laser designator 91; When laser designator 91 is convenient to teachers' instruction, the content on blackboard is indicated; The second bar 32 is provided with battery pack structure, for the electronic cell of driving laser indicator 91 is installed; The action bars disassembling from box body 1 also has the function of teach stick concurrently, strengthens the applicability of this device.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. a blackboard cleaning device, comprise box body and be located at the clean body of described box body bottom, it is characterized in that: also comprise coupling assembling and the action bars of being located at described box body top, described coupling assembling comprises rotating disk and is hinged on the joint being connected on described rotating disk and with described action bars, between described rotating disk and described box body, can relatively rotate, described action bars at least comprises the first bar and the second bar, described the first bar is inserted between the inside of described the second bar and two bars can relative sliding, on described the second bar, have the identical locating hole in more than three interval, the upper end of described the first bar is elasticly connected with the button matching with described locating hole, described the second bar and the first bar are located by connecting by described locating hole and button activity, between the lower end of described the first bar and described joint, be connected by screw thread pair, described clean body comprises hair rub and soft wiping, and described hair rub is located at continuously described box body bottom surrounding by snag and is formed, and described soft wiping is located in described hair rub, and described hair rub exceeds the bottom surface of described soft wiping, and described soft wiping is wear-resisting flexible foam or sponge.

2. blackboard cleaning device according to claim 1, is characterized in that: the side indent of described box body is formed for placing the accommodation chamber of chalk, is also connected with the sliding arm-tie for sealing and open described accommodation chamber on described side.

3. blackboard cleaning device according to claim 2, is characterized in that: described hair rub outward.

4. blackboard cleaning device according to claim 3, is characterized in that: described box body is rectangular structure, and described rotating disk is located at the end face middle part of described box body.

5. blackboard cleaning device according to claim 4, is characterized in that: the upper end of described the second bar is provided with laser designator and for controlling the switch of described laser designator.