CN208978536U - A kind of blackboard with automatic blackboard eraser - Google Patents

Abstract

The utility model discloses a kind of blackboards with automatic blackboard eraser, universal wheel is installed below pedestal, motor is connected with crank, crank is connected with connecting rod and rocking bar in turn by hinge, projection screen is equipped in rotation axis, the top of blackboard body is provided with sliding rail, it is in strip box-like on the inside of shield, rack gear is installed on the inside of shield one and is connected with blackboard body upper side frame, it is connect by hinge with rocking bar on back shroud, correspondence is disposed with axis hole and is equipped with rotating bar the side plate of eraser frame two sides from top to bottom, the middle section of rotating bar is equipped with helical tooth brush, bottom plate is provided with axis hole, and the axis of axis hole is corresponding with the open slot on top plate；For the utility model by utilizing theory of mechanics knowledge, crank and rocker mechanism drives blackboard eraser body to be horizontally moved by motor, and erasing chalk ash is clean, quickly, vdiverse in function, solves the problems, such as that existing blackboard eraser body needs manual operation and existing healthy hidden danger.

Description

A kind of blackboard with automatic blackboard eraser

Technical field

The utility model relates to teaching aid, in particular to a kind of blackboard with automatic blackboard eraser.

Background technique

School or enterprise are when using black board teaching or record, it usually needs wipe blackboard by blackboard eraser body On trace write again to realize, most of blackboard eraser bodies are usually to be made of plastic casing and soft band, when use One hand holds the plastic casing of blackboard eraser body, and soft band is made to be close to blackboard, realizes that soft band and chalk are residual by wiping back and forth Matter collision, so that chalk trace is removed on blackboard, although there are many existing blackboard eraser body type, but mostly compare It is smaller, entire blackboard eraser body is completely taken a long time, and blackboard itself has a single function, it is impossible to meet existing teaching The integral structure of equipment is very inconvenient, it is necessary to it is operated by manpower, it is time-consuming and laborious；And when its use is in chalk When on the blackboard of writing, chalk dust not can be carried out collection well, processing, and the chalk dust to descend slowly and lightly can be sucked by operator, right There are hidden danger for human health.

Utility model content

For the problems mentioned above in the background art, the utility model provides a kind of with the black of automatic blackboard eraser Plate enhances the integration of teaching aid, to reduce the pollution of dust, so that the entire blackboard eraser body clean required time is significantly It shortens, has saved the time, and wiping effect is clean, quickly, projection screen and projector match use, by text, drawing, mark Sheet, model etc. are amplified to be presented on projection screen, easy to operate, and student can be allowed in detail, clearly to understand in teaching Hold, improves learning interest, meet the use of PPT facility in existing teaching, improve the quality of teaching.

In order to solve the above-mentioned technical problem, the utility model provides the following technical solutions: one kind having automatic blackboard eraser Blackboard, including pedestal, blackboard body and blackboard eraser body are equipped with universal wheel, the left side of impact faces below the pedestal Motor is installed, motor is connected with crank, and crank is connected with connecting rod and rocking bar in turn by hinge；Pacify above right end of the base Equipped with waste collection box, pedestal is installed between motor and waste collection box, hydraulic elevator is fixed on pedestal, it is hydraulic Elevator is connected with foot-operated control panel, and foot-operated control panel is located at the outside of pedestal, and telescopic rod, telescopic rod are housed on hydraulic elevator Upper end is connected with the glidepath that blackboard body bottom edge is equipped with；Switch button is housed below glidepath left end, is equipped with below right end Range sensor, glidepath is " U "-shaped, and inside is equipped with ball；

The top of the blackboard body is provided with sliding rail, and the upper sliding rail includes rack gear, rotation axis and shield, protection Cover inside is in strip box-like, is equipped with rack gear on the inside of shield one and is connected with blackboard body upper side frame, another inside is equipped with Ball；The lower plate of shield is provided with strip groove, and the hobbing machine of roll shaft upper end is located above strip groove and is engaged with rack；It is anti- Rotation axis is equipped with by end plate on the outside of shield, projection screen is equipped in rotation axis, KY12S is installed above on the right side of shield Controller；

The blackboard eraser body includes eraser frame, and eraser frame surrounds rectangular box by side plate, top plate and bottom plate and back shroud Body is connect on back shroud with rocking bar by hinge；Correspondence is disposed with axis hole and pacifies the side plate of eraser frame two sides from top to bottom Equipped with rotating bar, the middle section of rotating bar is equipped with helical tooth brush, and both ends are set with the brush that sweeps up dust；It is symmetrically arranged with open slot on top plate, opens Convex ribs are provided on the inside of mouth slot；Bottom plate is provided with axis hole, and the axis of axis hole is corresponding with the middle line of the open slot on top plate； Bottom plate is oblique inwardly, and two sides are connect with both side plate inner face；Dust collection box is installed below bottom plate；Dust collection box It is connected by connecting pin and side plate in lower end；Hobbing machine is installed, link block is clamped by convex ribs above the open slot of top plate In in open slot, the upper end of roll shaft is connect by the axis hole of link block with hobbing machine, and the lower end of roll shaft is set with to sweep up dust and brushes and wear The axis hole of bottom plate is crossed, the fragment position up and down of roll shaft is fixedly installed with second bevel gear, covers on the roll shaft on second bevel gear top Equipped with shaft joint, the side of shaft joint is connected with shaft, and the both ends of shaft are equipped with first bevel gear, first bevel gear and the The engagement of two bevel gears；Around equipped with soft band, one side of the soft band towards blackboard body in the shaft of fragment position above and below roll shaft It is contacted with blackboard body surface, another side is contacted with helical tooth brush；

The range sensor is electrically connected with the input terminal of KY12S controller, the output end and electricity of the KY12S controller Motivation electrical connection；Motor is electrically connected by switch button and range sensor.

Preferably, the universal wheel is provided with tight locking button, and the outside of universal wheel is provided with anti-skid washer.

Preferably, the angle α of the bottom plate and back shroud inner plane is 110 ° ~ 130 °.

Compared with prior art, the utility model beneficial effect achieved is: crank, which is connected by a hinge, rocking bar, spiral shell The outside of rotation tooth brush is provided with soft band, can will be in the course of work in the dust collection box that the bottom end of blackboard eraser body is equipped with The chalk dust of generation is collected, and reduces the pollution of dust, by theory of mechanics knowledge, is driven using crank and rocker mechanism Blackboard eraser body is moved back and forth between upper sliding rail and glidepath, so that the entire blackboard eraser body clean required time is big It shortens greatly, has saved the time, and wiping effect is clean, quickly, projection screen and projector match use, increase image grayscale Add, it is in bright gay color, enhance the ornamental of image, is presented on text, drawing, sample, model etc. are amplified on projection screen, It is easy to operate, can allow student in detail, clearly understand the content of courses, improve learning interest, it is vdiverse in function, meet existing religion The use of PPT facility in, enhances the integration of teaching aid, improves quality of instruction, removes manual operation, time saving province from Power solves the problems, such as that traditional blackboard wipes ontology and needs manual operation and existing healthy hidden danger.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the schematic perspective view of upper sliding rail 13 in the utility model；

Fig. 3 is the internal structure side view of upper sliding rail 13 in the utility model；

Fig. 4 is the side partial sectional view of glidepath 5 in the utility model；

Fig. 5 is the structural schematic diagram of blackboard eraser body 12 in the utility model；

Fig. 6 is enlarged structure schematic diagram at A in Fig. 5；

Fig. 7 is B-B direction structure sectional view in Fig. 5；

Fig. 8 be in Fig. 5 C to partial structure sectional view；

Fig. 9 is the back side partial sectional view of 12 upper end of blackboard eraser body in the utility model；

Figure 10 is the schematic perspective view of 36 upper end of eraser frame in the utility model；

Figure 11 is first bevel gear 19 and 20 connection relationship diagram of second bevel gear in the utility model；

Figure 12 be in Figure 11 D-D to structural schematic diagram；

Figure 13 is the combining structure schematic diagram of the utility model in the base 25 Yu foot-operated control panel 29；

Figure 14 is the attachment structure schematic diagram of dust collection box 18 and side plate 42 in the utility model.

In figure: 1. blackboard bodies, 2. range sensors, 3. waste collection boxes, 4. hydraulic elevators, 5. glidepaths, 6. bases Seat, 7. universal wheels, 8. motor, 9. cranks, 10. hinges, 11. rocking bars, 12. blackboard eraser bodies, sliding rail on 13., 14. balls, 15. soft band, 16. rotating bars, 17. helical tooth brushes, 18. dust collection boxes, 19. first bevel gears, 20. second bevel gears, 21. Shaft, 22. roll shafts, 23. telescopic rods, 24.KY12S controller, 25. pedestals, 26. hobbing machines, 27. rotation axis, 28. projection screens Cloth, 29. foot-operated control panels, 30. shields, 31. connecting rods, 32. rack gears, 33. switch buttons；34. back shroud, 35. strip grooves, 36. eraser frame, 37. open slots, 38. shaft joints, 39. end plates, 40. link blocks, 41. convex ribs, 42. side plates, 43. top plates, 44. bottoms Plate, 45. connecting pins, 46. sweep up dust brush.

Specific embodiment

Below in conjunction with drawings and examples, the utility model is described in further detail.Referring to Fig. 1 to Figure 14, one kind is with complete The blackboard of automatic blackboard eraser, there are four universal wheel 7, the left side above pedestal 6 is equipped with motor 8(model for installation below pedestal 6 Are as follows: Y630-10/1180), motor 8 is connected with crank 9, and crank 9 passes sequentially through hinge 10 and is connected with connecting rod 31 and rocking bar 11； Pedestal 25 is installed between motor 8 and waste collection box 3, the lower section of blackboard body 1 is connected there are two hydraulic elevator 4, Hydraulic elevator 4 is connected with foot-operated control panel 29, rides control panel 29 and is located at 25 outside of pedestal in rectangular configuration, telescopic rod 23 Upper end is connect with 1 bottom edge of blackboard body equipped with glidepath 5；Switch button 33 is housed below 5 left end of glidepath, is equipped with below right end Range sensor 2, model are as follows: IFRM.

The top of blackboard body 1 is provided with sliding rail 13, and upper sliding rail 13 includes rack gear 32, rotation axis 27 and shield 30, It is in strip box-like on the inside of shield 30, the rack gear 32 of 45# steel material, shield is housed with the joint face of 1 top of blackboard body 30 lower plate is provided with strip groove 35, the hobbing machine 26 of 22 upper end of high strength steel material roll shaft be located at 35 top of strip groove and with Rack gear 32 engages；Rotation axis 27 is equipped with by end plate 39 on the outside of shield 30, the projection of high definition fiber is equipped in rotation axis 27 Curtain 28,30 right side of shield are equipped with KY12S controller 24 above.

Blackboard eraser body 12 includes eraser frame 36, and eraser frame 36 is surrounded by side plate 42, top plate 43, bottom plate 44 and back shroud 34 Rectangular box, correspondence is disposed with axis hole to the side plate 42 of 36 two sides of eraser frame from top to bottom, and axis hole is provided with rotating bar 16, The middle section of rotating bar 16 is equipped with helical tooth brush 17, and both ends are set with the brush 46 that sweeps up dust；It is symmetrically arranged with open slot 37 on top plate 43, connects Convex ribs 41 in 40 card slot of block and 43 upper open slot 37 of top plate are mutually clamped, and bottom plate 44 is provided with same with 43 upper open slot 37 of top plate The axis hole of axis；It is connect by hinge 10 with rocking bar 11 on back shroud 34；The two sides of top plate 43 are symmetrically installed with hobbing machine 26, roller The upper end of axis 22 is connect by the axis hole of link block 40 with hobbing machine 26, and the lower end of roll shaft 22 is set with the brush 46 that sweeps up dust, and prevents The chalk dust generated in wiping process enters the axis hole between bottom plate 44 and roll shaft 22, enhances wiping effect, improves service life, The fragment position up and down of roll shaft 22 is fixedly installed with the second bevel gear 20 of carbon constructional quality steel material, and second bevel gear 20 is pushed up Shaft joint 38 is set on the roll shaft 22 at end, the side of shaft joint 38 is connected with shaft 21, and the both ends of shaft 21 are equipped with excellent The first bevel gear 19 of matter carbon structure steel material；First bevel gear 19 is engaged with second bevel gear 20；36 loading and unloading of eraser frame It is contacted around the one side equipped with soft band 15, soft band 15 towards blackboard body 1 with 1 surface of blackboard body in some shafts 21, separately One side is contacted with helical tooth brush 17；It is located on the outside of hobbing machine 26 below bottom plate 44 and dust collection box 18 is housed, dust is collected Box 18 is mutually clamped by connecting pin 45 with the mounting hole on side plate 42, facilitates installation and removal, to the ash in dust collection box 18 Dirt is toppled in time.

Range sensor 2 is electrically connected with the input terminal of KY12S controller 24, the output end of KY12S controller 24 with it is electronic Machine 8 is electrically connected；Motor 8 is electrically connected by switch button 33 and range sensor 2, enhance wiping blackboard structure design Integration facilitates intelligent use, and wiping effect is clean, quick, has saved the time.

Universal wheel 7 is provided with tight locking button, and the outside of universal wheel 7 is provided with anti-skid washer, convenient for according to teaching place need Movement is carried out to entire device for blackboard eraser, is fixed, and prevent from generating shaking in the course of work.

The angle α of bottom plate 44 and 34 inner plane of back shroud is 120 °, convenient for chalk dust along the tilt angle of bottom plate 44 Into the inside to dust collection box 18.

Projection screen and projector match use, increase image grayscale, in bright gay color, enhance the ornamental of image, Be presented on text, drawing, sample, model etc. are amplified on projection screen, it is easy to operate, can allow student in detail, clearly The content of courses is understood clearly, and the point and lines of image are fine and smooth, clear, bright-coloured, largely student are attracted to realize, improve study Interest meets the use of PPT facility in existing teaching, enhances the integration of teaching aid, improves quality of instruction.

Working principle of the utility model is: the present invention has the blackboard of automatic blackboard eraser, firstly, upper sliding rail 13 and downslide Rail 5 is symmetrically mounted on the two sides of blackboard body 1, and the inside of upper sliding rail 13 and glidepath 5 is mounted on ball 14, reduces friction Resistance is slided between upper sliding rail 13 and glidepath 5 convenient for blackboard eraser body 12, and the left side of universal wheel 7 is provided with lock It links closely, the outside of universal wheel 7 is provided with anti-skid washer, convenient for whole device is fixed as needed, prevents the course of work Middle generation is shaken, and first bevel gear 19, second bevel gear 20, shaft joint 38 are a kind of structure of carbon constructional quality steel material Part, convenient for improving the stability of wiping process, the waste collection box 3 for improving the service life of device, while being equipped with can be by work The extra chalk end generated during making is thrown wherein, and the pollution to environment is reduced, secondly, by trampling foot-operated control panel 29, In hydraulic elevator 4(model are as follows: IFRM) power effect under, adjust telescopic rod 23 height so that blackboard body 1 is presented on Spectators suitably within sweep of the eye, improve efficiency of teaching, when work, start switch button 33, motor 8(model are as follows: Y630- 10/1180) connecting rod 31 and rocking bar 11 are connected in turn by crank 9, using theory of mechanics knowledge, are made by crank and rocker mechanism It obtains blackboard eraser body 12 and carries out controlling between upper sliding rail 13 and glidepath 5 and move back and forth, when blackboard eraser body 12 reaches blackboard When the edge of ontology 1, range sensor 2 passes information to KY12S controller 24, and KY12S controller 24 receives range information Judgement processing is carried out with the distance length set afterwards, and then controls the rotation of motor 8, so that blackboard eraser body 12 works Afterwards, sliding is back to the position originally moved between upper sliding rail 13 and glidepath 5, turns off the switch button 33, completes to blackboard chalk The removing of dust is equipped with projection screen in rotation axis 27 finally, being equipped with rotation axis 27 by end plate 39 on the outside of shield 30 Cloth 28 can provide projector apparatus and carry out PPT teaching, convenient for the integration of enhancing structure design, improve according to teaching needs Quality of instruction, when gear hobbing 26 is mobile in 32 inner horizontal of rack gear by the thrust of rocking bar 11, so that the first cone tooth on roll shaft 22 Thrust of the wheel 19 by horizontal direction makes since first bevel gear 19 is intermeshed with second bevel gear 20 by shaft joint 38 The thrust that 20 vertical direction of second bevel gear is converted by horizontal thrust for obtaining first bevel gear 19, realizes power on direction Mutually convert, drive shaft 21 to rotate upwardly and downwardly, since around being equipped with soft band 15, soft band 15 is towards blackboard body in shaft 21 1 one side is contacted with 1 surface of blackboard body, and another side is contacted with helical tooth brush 17, drives soft band 15 by shaft 21 Move back and forth up and down and carry out CONTACT WITH FRICTION with helical tooth brush 17, the dust of band 15 soft after wiping is struck off and placed In dust collection box 18, so that chalk dust is recycled in time, handled, dust collection box 18 passes through connecting pin 45 and side plate Mounting hole on 42 is mutually clamped, and is easily installed, and taking-up is facilitated, to topple over the dust in dust collection box 18, is protected Environment.

A kind of blackboard with automatic blackboard eraser improves stability when blackboard eraser body 12 works, so that entire black The blackboard eraser ontology clean required time shortens significantly, has saved the time, and wiping effect is clean, quick, vdiverse in function, projection screen Cloth and projector match use, increase image grayscale, in bright gay color, enhance the ornamental of image, by text, drawing, mark Sheet, model etc. are amplified to be presented on projection screen, easy to operate, and student can be allowed in detail, clearly to understand in teaching Hold, the point and lines of image are fine and smooth, clear, bright-coloured, largely student are attracted to realize, improve learning interest, meet existing The use of PPT facility in teaching, enhances the integration of teaching aid, improves quality of instruction, meets PPT in existing teaching and sets The use applied enhances the integration of teaching aid, improves quality of instruction, removes manual operation from, time saving and energy saving, solves tradition Blackboard eraser body 12 needs manual operation and existing healthy hidden danger problem.

Claims (3)

1. a kind of blackboard with automatic blackboard eraser, including pedestal (6), blackboard body (1) and blackboard eraser body (12), special Sign is: being equipped with universal wheel (7) below the pedestal (6), the left side of pedestal (6) above is equipped with motor (8), motor (8) it is connected with crank (9), crank (9) is connected with connecting rod (31) and rocking bar (11) in turn by hinge (10)；Pedestal (6) right end Waste collection box (3) are installed above, pedestal (25), pedestal (25) are installed between motor (8) and waste collection box (3) On be fixed with hydraulic elevator (4), hydraulic elevator (4) is connected with foot-operated control panel (29), and foot-operated control panel (29) are located at bottom The outside of seat (25) is equipped with telescopic rod (23) on hydraulic elevator (4), and telescopic rod (23) upper end and blackboard body (1) bottom edge fill Some glidepaths (5) are connected；Switch button (33) are housed below glidepath (5) left end, range sensor is housed below right end (2), glidepath (5) is " U "-shaped, and inside is equipped with ball (14)；

The top of the blackboard body (1) is provided with sliding rail (13), and the upper sliding rail (13) includes rack gear (32), rotation axis (27) and shield (30), be in strip box-like on the inside of shield (30), (30) one inside of shield be equipped with rack gear (32) and with Blackboard body (1) upper side frame is connected, and another inside is equipped with ball (14)；The lower plate of shield (30) is provided with strip groove (35), the hobbing machine (26) of roll shaft (22) upper end is located above strip groove (35) and engages with rack gear (32)；Shield (30) is outside Side is equipped with rotation axis (27) by end plate (39), is equipped in rotation axis (27) projection screen (28), on the right side of shield (30) KY12S controller (24) are installed above；

The blackboard eraser body (12) includes eraser frame (36), eraser frame (36) by side plate (42), top plate (43), bottom plate (44) and Back shroud (34) surrounds rectangular box, is connect by hinge (10) with rocking bar (11) on back shroud (34)；Eraser frame (36) two Correspondence is disposed with axis hole and is equipped with rotating bar (16) side plate (42) of side from top to bottom, and the middle section of rotating bar (16) is equipped with Helical tooth brush (17), both ends are set with sweep up dust brush (46)；Be symmetrically arranged on top plate (43) open slot (37), open slot (37) it is interior Side is provided with convex ribs (41)；Bottom plate (44) is provided with axis hole, and in the open slot (37) on the axis of axis hole and top plate (43) Line is corresponding；Bottom plate (44) is oblique inwardly, and two sides are connect with both side plate (42) inner face；Bottom plate is equipped with below (44) Dust collection box (18)；Dust collection box (18) is connect with side plate (42) in lower end by connecting pin (45)；Top plate (43) are opened It is equipped with hobbing machine (26) above mouth slot (37), link block (40) is installed in open slot (37) by convex ribs (41), roll shaft (22) upper end is connect by the axis hole of link block (40) with hobbing machine (26), and the lower end of roll shaft (22) is set with sweep up dust brush (46) And the axis hole of bottom plate (44) is passed through, the fragment position up and down of roll shaft (22) is fixedly installed with second bevel gear (20), the second cone tooth It takes turns and is set with shaft joint (38) on the roll shaft (22) on (20) top, the side of shaft joint (38) is connected with shaft (21), shaft (21) both ends are equipped with first bevel gear (19), and first bevel gear (19) is engaged with second bevel gear (20)；Positioned at roll shaft (22) up and down in the shaft (21) of fragment position around be equipped with soft band (15), soft band (15) towards blackboard body (1) one side with The contact of blackboard body (1) surface, another side is contacted with helical tooth brush (17)；

The range sensor (2) is electrically connected with the input terminal of KY12S controller (24), the KY12S controller (24) it is defeated Outlet is electrically connected with motor (8)；Motor (8) is electrically connected by switch button (33) and range sensor (2).

2. the blackboard according to claim 1 with automatic blackboard eraser, it is characterised in that: universal wheel (7) setting There is tight locking button, and the outside of universal wheel (7) is provided with anti-skid washer.

3. the blackboard according to claim 1 with automatic blackboard eraser, it is characterised in that: the bottom plate (44) and rear cover The angle α of plate (34) inner plane is 110 ° ~ 130 °.