CN113002225A - Self-driving dust-absorbing blackboard eraser - Google Patents

Abstract

The invention relates to a self-driving dust-absorption blackboard eraser, which does not need electric power, can automatically finish the dust absorption function through an internal transmission device in the process of reciprocating blackboard erasing of people, has the double functions of erasing and self-driving dust absorption, can completely replace the prior common blackboard eraser and the prior electric blackboard eraser, can reduce or even eliminate the phenomenon of chalk dust flying while improving the erasing efficiency and the erasing quality, and has important significance in teaching. The blackboard eraser has the advantages of light structure, low manufacturing cost, simple and convenient operation, safety and reliability.

Description

Self-driving dust-absorbing blackboard eraser

Technical Field

The invention belongs to the field of blackboard erasers, and particularly relates to a self-driving dust-absorbing blackboard eraser.

Background

Chalks and blackboards have long history as indispensable teaching aids for teaching, play an immeasurable role in the development of education institutions, and many schools adopt whiteboard and PPT courseware teaching modes at present, but the traditional chalks and blackboards teaching mode cannot be completely replaced, however, the chalk dust generated when the blackboards are erased always troubles people, and the chalk dust seriously influences the body health of teachers and students. When the blackboard eraser is used for large-area wiping, chalk dust attached to the surface of the blackboard eraser cannot be cleaned in time, the effect is poor, a large amount of chalk dust can be remained on the blackboard after the blackboard eraser is used for wiping, the chalk dust can float in the air in a large amount, and teachers and students can inhale respiratory tracts. Although there are several blackboard erasers that market promotion has the dust absorption function at present, these blackboard erasers almost all use motor drive dust absorption fan to accomplish the dust absorption function, need electric drive, and expensive and structure are complicated, and need not change the battery or charge in unscheduled, in case the power failure just can't normally work.

Disclosure of Invention

The purpose of the invention is as follows: the invention develops a self-driving dust collection blackboard eraser which does not need electric power, automatically completes the dust collection function through an internal transmission device in the process of reciprocating blackboard cleaning, and has the double functions of cleaning and self-driving dust collection.

The technical scheme of the invention is as follows: a self-driven dust-absorbing blackboard eraser is composed of a main body consisting of a self-driven dust collector, a supporting wiper and a dust collector, the dust-absorbing fan 4 and universal wheel 15 of said self-driven dust collector are supported by the supporter 2 of said supporting wiper via bearings, and can freely rotate on said supporter 2, the left and right rotary axles 8 and 13 of said self-driven dust collector are respectively matched with the left and right slide guide slots 21 and 22 of said supporting wiper in large gap, the left and right rotary axles 8 and 13 can freely rotate and slide in said guide slots 21 and 22, the dust-collecting drawer 1 of said dust collector is supported by said supporter 2 of said supporting wiper and can freely slide in supporter 2, the middle bevel gear bearing 17, the driving bevel gear bearing 18, the guide louver 23 and the inclined guide plate 26 of said dust collector are fixed to said supporter On the holder 2 of the wiping device.

The self-driven transmission dust collector mainly comprises a dust collecting fan 4, a universal coupling 5, a left friction wheel 6, a rotating frame 7, a left rotating shaft 8, a left bearing 9, a left bevel gear 10, a middle bevel gear 11, a right bevel gear 12, a right rotating shaft 13, a right bearing 14, a universal wheel 15, a right friction wheel 16, a middle bevel gear bearing support 17, a driving bevel gear bearing support 18, a driven bevel gear 19, a driving bevel gear 20, a left one-way ratchet wheel 24 and a right one-way ratchet wheel 25, wherein the left rotating shaft 8, the right rotating shaft 13, the left bearing 9, the right bearing 14, the left bevel gear 10, the right bevel gear 12, the left friction wheel 6, the right friction wheel 16, the left one-way ratchet wheel 24 and the right one-way ratchet wheel 25 are symmetrically arranged at two sides of the rotating frame 7, the left friction wheel 6 is sleeved on an outer ring of the left one-way ratchet wheel 24, an inner ring of the left one-way ratchet wheel 24 is, the left one-way ratchet wheel 24 drives the inner ring to rotate forwards when the outer ring rotates forwards, the left one-way ratchet wheel 24 cannot drive the inner ring to rotate backwards when the outer ring rotates backwards, and the outer ring is in an idle running state at the moment, so that the left rotating shaft 8 is driven to rotate forwards through the left one-way ratchet wheel 24 when the left friction wheel 6 rotates forwards, and the left rotating shaft 8 does not rotate backwards along with the rotation of the left friction wheel 6 when the left friction wheel rotates backwards.

The right friction wheel 16 is sleeved on the outer ring of the right one-way ratchet wheel 25, the inner ring of the right one-way ratchet wheel 25 is sleeved on the right rotating shaft 13, due to the one-way reverse rotation synchronism of the right one-way ratchet wheel 25, the outer ring of the right one-way ratchet wheel 25 is driven to rotate reversely when rotating reversely, the inner ring cannot be driven to rotate normally when the outer ring of the right one-way ratchet wheel 25 rotates normally, at the moment, the outer ring is in an idle running state, so that the right rotating shaft 13 is driven to rotate reversely through the right one-way ratchet wheel 25 when the right friction wheel 16 rotates reversely, and the. The left bevel gear 10 and the right bevel gear 12 are respectively fixedly connected to a left rotating shaft 8 and a right rotating shaft 13, the left rotating shaft 8 and the right rotating shaft 13 are respectively installed on a rotating frame 7 through a left bearing 9 and a right bearing 14 and can freely rotate on the rotating frame 7, the rotating frame 7 is fixedly connected to a universal wheel 15, the left bevel gear 10 and the right bevel gear 12 are simultaneously meshed with a middle bevel gear 11 and are symmetrically arranged on two sides of the middle bevel gear 11, the middle bevel gear 11 and a driving bevel gear 20 are connected to two ends of a universal coupling 5, the driving bevel gear 20 is meshed with a driven bevel gear 19, and the driven bevel gear 19 is fixedly connected with a central shaft of a dust collection fan 4.

The dust collecting device mainly comprises a flow guide louver board 23, a flow guide sloping board 26 and a dust collection drawer 1, wherein each blade board of the flow guide louver board 23 and the flow guide sloping board 26 incline towards the dust collection drawer 1, the flow guide louver board 23 is positioned above the flow guide sloping board 26, and the flow guide sloping board 26 is positioned above the dust collection drawer 1.

The supporting and wiping device mainly comprises a support 2, a closed skirt cleaning cloth 3, a left sliding guide groove 21 and a right sliding guide groove 22, wherein a plurality of skirt cleaning cloth dust suction gaps 30 are uniformly distributed at the bottom of the closed skirt cleaning cloth 3, the closed skirt cleaning cloth 3 is fixedly connected to a bottom plate 28 of the support 2, the support 2 comprises a bottom plate 28, a cover plate 29 and a support frame, and the left sliding guide groove 21 and the right sliding guide groove 22 are fixedly connected to the support frame.

The invention has the beneficial effects that: the invention relates to a self-driving dust-absorption blackboard eraser, which does not need electric power, can automatically finish the dust absorption function through an internal transmission device in the process of reciprocally wiping a blackboard, has the double functions of wiping and self-driving dust absorption, can completely replace the prior common blackboard eraser and an electric blackboard eraser, can reduce or even eliminate the phenomenon of chalk dust flying while improving the wiping efficiency and wiping quality, and has important significance in teaching. The blackboard eraser has the advantages of light structure, low manufacturing cost, simple and convenient operation, safety and reliability.

Drawings

FIG. 1 is a top view of a self-propelled dust-collecting blackboard eraser;

FIG. 2 is a three-dimensional view of a self-propelled dust-absorbing blackboard eraser;

FIG. 3 is a first internal front view of the self-propelled dust-absorbing blackboard eraser;

FIG. 4 is a second front view of the interior of the self-propelled dust-collecting blackboard eraser;

FIG. 5 is a three-dimensional view I of the self-driven transmission dust-collecting device;

FIG. 6 is a three-dimensional view II of the self-driven transmission dust collector;

FIG. 7 is a partial three-dimensional view of the self-driven vacuum cleaner;

FIG. 8 is a partial three-dimensional view of the self-driven vacuum cleaner;

FIG. 9 is a partial three-dimensional view of a supporting wiping device;

FIG. 10 is a partial three-dimensional view of the supporting wiping device;

fig. 11 is an outline view of the self-driving dust-absorbing blackboard eraser;

FIG. 12 is a three-dimensional view of the dirt collection drawer;

FIG. 13 is a three-dimensional view of a closed skirt wipe;

FIG. 14 is a three-dimensional view of an enclosed skirt wipe, skirt wipe suction slit, and sole plate consolidation;

FIG. 15 is a schematic view of the drive direction of the self-driven vacuum cleaner.

Wherein the content of the first and second substances,

1. the dust collecting drawer comprises a dust collecting drawer body, a support, a 3-closed skirt cleaning cloth, a 4-dust collecting fan, a 5-universal coupling, a 6-left friction wheel, a 7-rotating frame, a 8-left rotating shaft, a 9-left bearing, a 10-left bevel gear, a 11-middle bevel gear, a 12-right bevel gear, a 13-right rotating shaft, a 14-right bearing, a 15-universal wheel, a 16-right friction wheel, a 17-middle bevel gear bearing support, a 18-driving bevel gear bearing support, a 19-driven bevel gear, a 20-driving bevel gear, a 21-left sliding guide groove, a 22-right sliding guide groove, a 23-flow guide louver plate, a 24-left one-way ratchet wheel, a 25-right one-way ratchet wheel, a 26-flow guide inclined plate, a 27-through hole, a 28-bottom plate, a 29-cover plate and a 30-skirt cleaning

Detailed Description

Referring to fig. 1-15, when the self-driven dust-absorbing blackboard eraser goes up and down to wipe the blackboard, the left friction wheel 6 and the right friction wheel 16 of the self-driven transmission dust-absorbing device rotate under the friction force with the blackboard, when the self-driven dust-absorbing blackboard eraser moves upwards (upwards), the left friction wheel 6 and the right friction wheel 16 rotate forwards simultaneously, because a left one-way ratchet wheel 24 and a right one-way ratchet wheel 25 are respectively arranged inside the left friction wheel 6 and the right friction wheel 16, and the left one-way ratchet wheel 24 and the right one-way ratchet wheel 25 respectively have one-way forward rotation synchronism and one-way reverse rotation synchronism, only the left friction wheel 6 drives the left rotating shaft 8 to rotate forwards through the left one-way ratchet wheel 24, and the right friction wheel 16 idles on the right rotating shaft 13, the power of the left friction wheel 6 sequentially passes through the left one-way ratchet wheel 24, the left rotating shaft 8, the left bevel gear 10, the middle bevel gear 11, finally driving the dust-absorbing fan 4 to rotate forwards, sucking the chalk dust wiped off by the cleaning cloth 3 with the sealed skirt edge to the upper part of the dust-absorbing fan 4 when the dust-absorbing fan 4 rotates forwards, sucking the chalk dust into the dust-accumulating drawer 1 under the flow guidance of the flow-guiding louver boards 23 and the flow-guiding sloping boards 26 and under the gravity action of the chalk dust, sucking the air mixed with a large amount of chalk dust in the bottom board 28 and the sealed skirt edge 3 into the upper space formed by the flow-guiding louver boards 23, the flow-guiding sloping boards 26 and the cover boards 29 of the bracket 2 by the dust-absorbing fan 4 in the sealed space formed by the bottom board 28 of the bracket 2, the chalk dust is filtered and guided by the flow-guiding louver boards 23 and the flow guidance of the flow-guiding sloping boards 26, the chalk dust is collected in the dust-accumulating drawer 1, and the filtered air flows back to the dust-accumulating drawer 1 by the through holes 27 in the bottom board 28 of the bracket 2, In a closed space formed among the bottom plate 28 of the bracket 2, the supporting frame of the bracket 2 and the blackboard, air completes an internal circulation in the self-driving dust-absorbing blackboard eraser, and the chalk dust is continuously filtered and collected into the dust-collecting drawer 1 by the air internal circulation under the continuous suction of the dust-absorbing fan 4.

When the self-driven dust-absorption blackboard eraser moves downwards (returns), the left friction wheel 6 and the right friction wheel 16 rotate reversely simultaneously, because the left friction wheel 6 and the right friction wheel 16 are internally provided with a left one-way ratchet wheel 24 and a right one-way ratchet wheel 25 respectively, and the left one-way ratchet wheel 24 and the right one-way ratchet wheel 25 have one-way forward rotation synchronism and one-way reverse rotation synchronism respectively, the dust absorption fan 4 is finally driven to rotate forwards, the chalk dust wiped off by the closed skirt rag 3 when the dust absorption fan 4 rotates forwards is sucked above the dust absorption fan 4, the chalk dust slides into the dust collection drawer 1 under the flow guidance of the flow guide louver board 23 and the flow guide sloping board 26 and the gravity of the chalk dust, and in the dust absorption process of the dust absorption fan 4, the air mixed with a large amount of chalk dust in the bottom board 28 and the closed rag 3 by the supporting and wiping device, the bottom board 28 of the support frame 2, the support frame and the blackboard is sucked into the flow guide louver board 23 and the flow guide board 3 by the dust absorption, In the upper space formed by the flow guide sloping plate 26 and the cover plate 29 of the bracket 2, the chalk dust is filtered and guided by the flow guide louver 23 and is guided by the flow guide sloping plate 26, the chalk dust is collected in the dust collection drawer 1, the filtered air flows back into the closed space formed by the skirt cleaning cloth 3 of the closed wiping device, the bottom plate 28 of the bracket 2, the support frame of the bracket 2 and the blackboard through the through hole 27 in the bottom plate 28 of the bracket 2, at the moment, the air completes an internal circulation in the self-driving dust collection blackboard eraser, the air continuously filters and collects the chalk dust into the dust collection drawer 1 through the air internal circulation under the continuous suction of the dust collection fan 4, and when the dust collection drawer 1 is fully collected, the dust collection drawer 1 is drawn out to pour the chalk dust.

As shown in fig. 15, when the self-driven dust-absorbing blackboard eraser is used for wiping a blackboard back and forth, the left friction wheel 6 and the right friction wheel 16 are driven to alternately rotate forwards and backwards, when the blackboard eraser is used for rotating forwards, the left friction wheel 6 rotates forwards to drive the left bevel gear 10 to rotate forwards, at the moment, the right friction wheel 16 idles, and the left bevel gear 10 drives the middle bevel gear 11 to rotate forwards; during reverse rotation, the right friction wheel 16 drives the right bevel gear 12 to rotate reversely, at this time, the left friction wheel 6 idles, the right bevel gear 12 also drives the middle bevel gear 11 to rotate forwardly, that is: when the self-driven dust-absorption blackboard eraser is used for erasing a blackboard in a forward or backward mode, the middle bevel gear 11 is driven to rotate in one direction, namely, the middle bevel gear rotates forwards, so that the dust-absorption fan 4 is guaranteed to suck and rotate in one direction, and the continuous dust-absorption function is achieved.

The skirt-edge cleaning cloth dust collection gap 30 mainly provides a suction channel for the chalk dust scattered outside the periphery of the closed skirt-edge cleaning cloth 3, in the cleaning process, the chalk dust scattered outside the periphery of the closed skirt-edge cleaning cloth 3 enters a closed space (the space is formed by the closed skirt-edge cleaning cloth 3 of the supporting and cleaning device, the bottom plate 28 of the support 2, the supporting frame of the support 2 and the blackboard) through the skirt-edge cleaning cloth dust collection gaps 30 uniformly distributed at the bottom of the closed skirt-edge cleaning cloth 3 under the suction force of the dust collection fan 4, and then is sucked into an upper layer space formed by the flow guide louver boards 23, the flow guide sloping boards 26 and the cover plates 29 of the support 2 through the dust collection fan 4, the chalk dust is filtered and guided by the flow guide louver boards 23 and is guided by matching with the flow guide sloping boards 26, and the chalk dust is collected in the dust collection.

Because the universal wheel 15 can freely rotate on the bracket 2, in the up-and-down wiping process of the self-driven dust-absorbing blackboard eraser, the left friction wheel 6 and the right friction wheel 16 can automatically and easily rotate according to the trend of the self-driven dust-absorbing blackboard eraser under the automatic adjustment action of the universal wheel 15, and the left rotating shaft 8 and the right rotating shaft 13 can also rotate and freely slide in the left sliding guide groove 21 and the right sliding guide groove 22 respectively in the adjustment and rotation process of the universal wheel 15.

Claims (4)

1. A self-driven dust-collecting blackboard eraser is composed of a main body consisting of a self-driven dust collector, a supporting wiper and a dust collector, the dust-collecting fan and universal wheel of said self-driven dust collector are supported by the supporter of said supporting wiper via bearings, the dust collecting device comprises a dust collecting device, a self-driven transmission dust collecting device, a bracket, a self-driven transmission dust collecting device and a self-driven transmission dust collecting device, wherein the self-driven transmission dust collecting device is arranged on the bracket, the self-driven transmission dust collecting.

2. The self-driven dust-absorbing blackboard eraser according to claim 1, wherein the self-driven transmission dust-absorbing device mainly comprises a dust-absorbing fan, a universal coupling, a left friction wheel, a rotating frame, a left rotating shaft, a left bearing, a left bevel gear, a middle bevel gear, a right rotating shaft, a right bearing, a universal wheel, a right friction wheel, a middle bevel gear bearing support, a driving bevel gear bearing support, a driven bevel gear, a driving bevel gear, a left one-way ratchet wheel and a right one-way ratchet wheel, wherein the left rotating shaft and the right rotating shaft, the left bearing and the right bearing, the left bevel gear and the right bevel gear, the left friction wheel and the right friction wheel, the left one-way ratchet wheel and the right one-way ratchet wheel are symmetrically arranged on two sides of the rotating frame, the left friction wheel is sleeved on an outer ring of the left one-way ratchet wheel, the left one-way ratchet wheel is sleeved on an inner ring of the left, the left bevel gear and the right bevel gear are fixedly connected to the left rotating shaft and the right rotating shaft respectively, the left rotating shaft and the right rotating shaft are mounted on the rotating frame through the left bearing and the right bearing respectively and can rotate freely on the rotating frame, the rotating frame is fixedly connected to the universal wheels, the left bevel gear and the right bevel gear are meshed with the middle bevel gear at the same time and are symmetrically arranged on two sides of the middle bevel gear, the middle bevel gear and the driving bevel gear are connected to two ends of the universal coupling, the driving bevel gear is meshed with the driven bevel gear, and the driven bevel gear is fixedly connected with a central shaft of the dust collection fan.

3. The self-propelled dust-collecting blackboard eraser as claimed in claim 1, wherein the dust collecting device is mainly composed of a flow-guiding louver board, a flow-guiding sloping board and a dust-collecting drawer, each of the flow-guiding louver board and the flow-guiding sloping board is inclined towards the dust-collecting drawer, the flow-guiding louver board is located above the flow-guiding sloping board, and the flow-guiding sloping board is located above the dust-collecting drawer.

4. The self-driven dust-absorption blackboard eraser as claimed in claim 1, wherein the supporting and wiping device is mainly composed of a support, a closed skirt-shaped cleaning cloth, a left sliding guide groove and a right sliding guide groove, a plurality of skirt-shaped cleaning cloth dust absorption gaps are uniformly distributed at the bottom of the closed skirt-shaped cleaning cloth, the closed skirt-shaped cleaning cloth is fixedly connected to the bottom plate of the support, the support is composed of a bottom plate, a cover plate and a support frame, and the left sliding guide groove and the right sliding guide groove are fixedly connected to the support frame.

Images