CN101722774A

CN101722774A - Blackboard eraser

Info

Publication number: CN101722774A
Application number: CN200910198727A
Authority: CN
Inventors: 胡彦红; 王志良
Original assignee: University of Shanghai for Science and Technology
Current assignee: University of Shanghai for Science and Technology
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2010-06-09

Abstract

The invention relates to a blackboard eraser. The upper edge and the lower edge of a blackboard are respectively connected with a guide rail with a T-shaped groove, the bottom of a slide block with a key is embedded into the T-shaped groove of an upper guide rail, the upper part of the slide block with the key is connected with a driving shaft with a key by four long key grooves on the circumferential face of an inner hole, one end of the driving shaft with the key is connected with a bearing, the bearing is clamped inside a bearing seat, and the bearing seat is fixed on a wall surface; the bottom of a slide block with screw threads is embedded into the T-shaped groove of a lower guide rail, the upper part of the slide block with the screw threads is connected with a driving shaft with screw threads by an inner screwed hole, one end of the driving shaft with the screw threads is connected with a handle by a fixed supporting seat, the other end is connected with a bearing, the bearing is clamped inside a bearing seat, and the bearing seat is fixed on the wall surface; and an intermediate plate is fixedly connected between the slide block with the screw threads and the slide block with the key, the bottom of the intermediate plate is provided with a groove, and an erasing body is placed in the groove and contacts the board face of the blackboard. The invention has simple structure, can lighten the labor strength of a teacher when the teacher erases the blackboard, and reaches the requirement of environmental protection, and dust does not rise.

Description

A kind of blackboard eraser

Technical field

The present invention relates to a kind of Writing plate and wipe, be specifically related to laborsaving black (in vain) blackboard eraser of a kind of novel environment friendly, do not need hand to take blackboard eraser firmly to erase the board, only need shake handle gently, just can realize.

Background technology

" environmental protection " is topics of a hot topic in 20 end of the centurys, is a loud call, aroused the world 6,000,000,000 compatriot, protects the home hand in hand.But, new implication will be given in today of 21 century." environmental protection " is not only a common recognition, pay especially in " Environmental Protection Practice " of action, for example, the exploitation of environment-friendly products, tradition fall behind innovation of technology or the like.

But in environmental protection, we also will guarantee to reduce people's labour intensity, with existing " combined type dust collecting multifunctional health blackboard eraser " is example, it declares it is in existing multinomial black (in vain) blackboard eraser patented technology, a kind of the most thorough, the brand-new patented technology of showing one's talent; The function and the scope of application are the most comprehensive; The most flexible, simple, a most practical patent, but still need teacher's hand to take blackboard eraser, wrist firmly could be wiped clean the word on the blackboard, even if it is good again that blackboard eraser is wiped head material, also having the part chalk dust enters in teacher's body, and teacher's process of writing on blackboard has caused certain labour intensity to wrist, and the action that erases the board will certainly increase the weight of the labour intensity of wrist.

Summary of the invention

The invention discloses a kind of blackboard eraser, overcome existing black (in vain) blackboard eraser, the user needs hand to take blackboard eraser, firmly could blackboard eraser is clean, the drawback that the big chalk dust of labour intensity easily enters respiratory system, the present invention only need shake handle gently, just can blackboard eraser is clean, not only can reduce teacher's labour intensity, and in the process of implementing, can thoroughly eradicate chalk dust, the blackboard eraser compactness is wiped head and easily changed, and is very easy to use.

A kind of blackboard eraser, blackboard is fixed on the metope, it is characterized in that: the upper and lower edge of described blackboard respectively is connected with the guide rail of a band T type groove, band key sliding shoe bottom embeds in the T type groove of upper rail, band key sliding shoe top is slidingly connected with being with four long keyway on the key driving shaft 8 by four on the endoporus long key projections, and a band key driving shaft wherein end connects with bearing, and bearing is stuck in bearing block inside, bearing block is fixed on the metope, and band key driving shaft can guarantee the stability with the key sliding shoe; Threaded sliding shoe bottom embeds in the T type groove of lower guideway, threaded sliding shoe top is connected with threaded driving shaft by internal thread, and threaded driving shaft one end connects by hold-down support with handle, and the other end and bearing link, bearing is stuck in the bearing block, and bearing block is fixed on the metope; An affixed intermediate plate between threaded sliding shoe and the band key sliding shoe is placed rub body in the described intermediate plate bottom slot, groove, rub body contacts with blackboard panel.

Described intermediate plate is parallel to blackboard two frames, and is parallel and leave the space between intermediate plate bottom surface and the blackboard surface.

Described rub body is that flexibility is good, the wool that adsorptivity is strong.

Each part all adopts standard design in the structure of the present invention, and is simple in structure, dependable performance, and it is very clean to erase the board, and not only can alleviate teacher's labour intensity, and dust do not fly upward, and reaches environmental requirement.

Description of drawings

Fig. 1 is a wiping blackboard structure schematic diagram of the present invention.

1. handle, 2. threaded sliding shoe, 3. threaded driving shaft, 4. metope, 5. lower guideway, 6. bearing block, 7. blackboard edge fixed block, 8. band key driving shaft, 9. blackboard, 10. upper rail, 11. band key sliding shoes, 12. intermediate plates.

The specific embodiment

Below in conjunction with drawings and Examples the present invention is further described, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.

A kind of blackboard eraser, structure as shown in Figure 1, blackboard 9 is fixed on the metope 4 by blackboard edge fixed block 7, on the described blackboard 9, lower limb is connected with the upper rail 10 and the lower guideway 5 of a band T type groove respectively, the top of blackboard: band key sliding shoe 11 bottoms embed in the T type groove of upper rail 10, band key sliding shoe 11 tops are slidingly connected with being with four long keyway on the key driving shaft 8 by four on the endoporus long key projections, band key driving shaft 8 a wherein end connects with bearing, bearing is stuck in bearing block 6 inside, bearing block 6 is fixed on the metope 4, the stability that band key driving shaft 8 can guarantee with the key sliding shoe; The bottom of blackboard: threaded sliding shoe 2 bottoms embed in the T type groove of lower guideway 5, threaded sliding shoe 2 tops are connected with threaded driving shaft 3 by internal thread, threaded driving shaft 3 one ends and handle 1 connect by hold-down support, the other end and bearing link, bearing is stuck in the bearing block 6, and bearing block 6 is fixed on the metope 4; An affixed intermediate plate 12 between threaded sliding shoe 2 and the band key sliding shoe 11, intermediate plate 12 is parallel to blackboard the right and left framework, and is parallel and leave the space between intermediate plate bottom surface and the blackboard surface.Place rub body in intermediate plate 12 bottom slots, groove, rub body contacts with blackboard panel.Rub body preferably selects flexibility good, the wool that adsorptivity is strong.

When erasing the board: shake handle 1 gently, handle 1 rotates with threaded driving shaft 3, threaded sliding shoe 2 tops are under the effect of the motion thread of threaded driving shaft 3, and to front slide, slide synchronously along the T type groove of lower guideway 5 in threaded sliding shoe 2 bottoms along threaded driving shaft 3; Intermediate plate 12 by bottom slot between threaded sliding shoe 2 and the band key sliding shoe 11 is welded to each other, therefore driving the band key sliding shoe 11 T type grooves along band key driving shaft 8 and upper rail 10 slides synchronously, because it is parallel and leave the space between intermediate plate bottom surface and the blackboard surface, the kerve of intermediate plate is carried rub body secretly, rub body directly contacts blackboard panel, so the slip area-covered, blackboard is wiped clean just.

Blackboard eraser of the present invention also can be used as the wiping blank, and structure can be set to left and right wiping, also can be set to upper and lower wiping.

Claims

1. blackboard eraser, blackboard is fixed on the metope, it is characterized in that: the upper and lower edge of described blackboard respectively is connected with the guide rail of a band T type groove, band key sliding shoe bottom embeds in the T type groove of upper rail, band key sliding shoe top is slidingly connected with being with four long keyway on the key driving shaft by four on the endoporus long key projections, a band key driving shaft wherein end connects with bearing, and bearing is stuck in bearing block inside, and bearing block is fixed on the metope; Threaded sliding shoe bottom embeds in the T type groove of lower guideway, threaded sliding shoe top is connected with threaded driving shaft by internal thread, and threaded driving shaft one end connects by hold-down support with handle, and the other end and bearing link, bearing is stuck in the bearing block, and bearing block is fixed on the metope; An affixed intermediate plate between threaded sliding shoe and the band key sliding shoe is placed rub body in the described intermediate plate bottom slot, groove, rub body contacts with blackboard panel.

2. a kind of blackboard eraser according to claim 1 is characterized in that: described intermediate plate is parallel to blackboard two frames, and is parallel and leave the space between intermediate plate bottom surface and the blackboard surface.

3. a kind of blackboard eraser according to claim 1 is characterized in that: described rub body is a wool.