CN103692826B - A kind of front and back transposition lift fast wipes the blackboard of dust - Google Patents
A kind of front and back transposition lift fast wipes the blackboard of dust Download PDFInfo
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- CN103692826B CN103692826B CN201310686025.7A CN201310686025A CN103692826B CN 103692826 B CN103692826 B CN 103692826B CN 201310686025 A CN201310686025 A CN 201310686025A CN 103692826 B CN103692826 B CN 103692826B
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- China
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- blackboard
- gear
- rack
- fixing support
- transposition
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Abstract
The invention discloses the blackboard that a kind of front and back transposition lift fast wipes dust, it is made up of two pieces of blackboards, flexible rack, fixing support rack, ratchet mechanism, front and back transposer and board wiping device.The right and left installed in front of blackboard has flexible rack, and left and right sides are provided with common tooth bar; Fixing support rack is provided with ratchet mechanism, simultaneously between bracing frame across being installed with gear and regulating wheel.This kind of new type blackboard is mainly used in the education activities coordinating teacher, realize front and back transposition and the elevating movement of blackboard, and the function of shortcut self-help erasing dust is realized when lifting, save the time of wiping monoblock blackboard, improve the efficiency that teacher gives lessons, the chalk dust that erase process produces is distributed between two pieces of blackboards and can not flies upward in classroom, decreases the chronic injury of chalk dust to teacher and classmate, improve teaching environment, improve quality of instruction.
Description
Technical field
The invention belongs to teaching aid technical field, particularly relate to the blackboard that a kind of front and back transposition lift fast wipes dust.
Background technology
Existing machine learning great majority are all fixed blackboards, also have type of push and pull up down blackboard, and type of push and pull up down blackboard mainly adopts the mechanism of fixed pulley and rope, but this mechanism driving is unstable.In addition, often need erasing blackboard when teacher's teaching, the chalk dust of generation can fly upward inside classroom, is a serious threat to teacher and classmates healthy.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, provide a kind of front and back transposition lift fast to wipe the new type blackboard of dust.
For achieving the above object, the technical solution used in the present invention is:
Front and back transposition lift fast wipes a blackboard for dust, comprises the first blackboard, the second blackboard, the first flexible rack, two end to end second flexible racks, fixing support rack, ratchet mechanism, front and back transposer and board wiping devices, described first blackboard, the second blackboard the right and left installed in front have the first flexible rack of complete cycle, the left and right side of described first blackboard, the second blackboard is respectively provided with the common tooth bar of strip, fixing support rack two ends are respectively provided with four ratchet mechanisms, described ratchet mechanism is meshed with described common tooth bar, described fixing support rack upper end and lower end have respectively been horizontally disposed with two and have been parallel to each other and cogged gear shaft is installed at two ends, article two, the second flexible rack winding on described gear and regulating wheel and respectively with described first blackboard, the first flexible rack on second blackboard is meshed, described front and back transposer and board wiping device are flatly arranged on the stage casing of fixing support rack across ground, described transposition gear is arranged on transposer two ends, front and back, described board wiping device is collodion rub piece, between the transposition gear being arranged on front and back transposer.
Further, two are parallel to each other and two ends are installed between cogged gear shaft and are also horizontally disposed with the tensioning shaft that two ends are provided with regulating wheel.
Further, described ratchet mechanism comprises two coaxial ratchets, described ratchet comprises outer sleeve and the inner sleeve of matched in clearance, outer sleeve is the gear that endoporus is provided with ratchet, inner sleeve is fastened on fixing support rack fixed axis by key, by lock pawl alignment pin, two rotating lock pawls are respectively housed in the axial both sides of inner sleeve, described lock pawl are provided with spring holder, by arranging spring, lock pawl and ratchet are kept in touch.
Blackboard selects surface to scribble the fiberglass base material of wear-resistant coating, Portable durable; When mounted, two pieces of blackboards and ratchet mechanism and front and back be allowed to replace gears meshing, can correct engagement during to ensure lifting and transposition.
Preferably, fixing support rack is across being installed with eight gears and eight regulating wheels, and top and the bottom are all four, eight gears and flexible rack engaged transmission, with the flexible rack engaged transmission of blackboard while of flexible rack, regulating wheel plays the effect changing flexible rack rotation direction and continuous transmission; Across being provided with the device and board wiping device that realize changing before and after blackboard in the middle of bracing frame; Each bracing frame is provided with the ratchet mechanism of engaging with blackboard left and right side tooth bar, this mechanism has two, and the blackboard be positioned at above can only be moved downward, and the blackboard be positioned at below can only move upward.
Preferably, board wiping device is a collodion rub piece, when blackboard is elevated, and the two pieces of blackboards in front and back extruding collodion rub piece, thus clean for whole erasing of blackboard below, and the chalk dust that erase process produces can not fly upward everywhere.
The front and back transposer realizing replacing before and after blackboard comprises two coaxial transposition gears, can use flexibly: before and after not needing during transposition, transposition gear and blackboard flexible rack engaged transmission, and blackboard transposition occurs when can prevent from writing; When replacing before and after blackboard is wanted, blackboard is above moved to bottom, at this moment be positioned at blackboard top, front lower place flexible rack and be positioned at flexible rack bottom the blackboard of back upper place just with transposition gears meshing, the blackboard be positioned at above is only needed to press in the inside, under the drive of transposition gear, the front and back transposition of blackboard can be realized.
Compared with prior art, the invention has the beneficial effects as follows: the present invention is by the transmission of flexible rack, gear, ratchet, and the flexible use of front and back transposer, realize lifting and the front and back transposition of blackboard, operation principle is simple, and transmission is convenient, makes blackboard become more flexible; In the process of blackboard lifting, realize the function of auto-erasing, save the time of wiping monoblock blackboard, improve the efficiency that teacher gives lessons; The chalk dust that erase process produces is distributed between two pieces of blackboards and can not flies upward in classroom, decreases the chronic injury of chalk dust to teacher and classmate, improves teaching environment, improve quality of instruction.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, goal of the invention of the present invention is described in further detail.
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of blackboard of the present invention.
Fig. 3 is the structural representation that the present invention removes two pieces of blackboards and flexible rack.
Fig. 4 is that schematic diagram is looked on a left side of the present invention.
Fig. 5 is ratchet exploded perspective view of the present invention.
Fig. 6 is ratchet schematic side view of the present invention.
Shown in figure be: 1-first blackboard; 11-second blackboard; 101-fixing support rack; 161-fixed axis, 171-spring, 191 keys; The common tooth bar of 2-; 201-ratchet mechanism; 202-spring holder; 204 inner sleeves; 206-lock pawl alignment pin; 207-outer sleeve; 208-lock pawl; 31-collodion rub piece; 321-gear; 331-regulating wheel; 4-first flexible rack; 41-second flexible rack; 401 transposition gears.
Detailed description of the invention
Be described in further detail goal of the invention of the present invention below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore embodiments of the present invention are not defined in following examples.
As shown in Figures 1 to 6, front and back transposition lift fast wipes a blackboard for dust, comprises the first blackboard 1, second blackboard 11, first flexible rack 4, two end to end second flexible racks 41, fixing support rack 101, ratchet mechanism 201, front and back transposer and board wiping devices, described first blackboard 1, second blackboard 11 the right and left installed in front have the first flexible rack 4 of complete cycle, the left and right side of described first blackboard, the second blackboard is respectively provided with the common tooth bar of strip, fixing support rack 101 two ends are respectively provided with four ratchet mechanisms, described ratchet mechanism is meshed with described common tooth bar, described fixing support rack upper end and lower end are respectively horizontally disposed with two and are parallel to each other and two ends are provided with the gear shaft of gear 321, article two, the second flexible rack 41 winding on described gear 321 and regulating wheel 331 and respectively with described first blackboard 1, the first flexible rack 4 on second blackboard 11 is meshed, described front and back transposer and board wiping device are flatly arranged on the stage casing of fixing support rack 101 across ground, described transposition gear 401 is arranged on transposer two ends, front and back, described board wiping device is collodion rub piece 31, between the transposition gear 401 being arranged on front and back transposer.
Article two, be parallel to each other and two ends gear 321 is installed gear shaft between be also horizontally disposed with the tensioning shaft that two ends are provided with regulating wheel 331.
As shown in Figure 5 and Figure 6, described ratchet mechanism comprises two coaxial ratchets, described ratchet comprises outer sleeve 207 and the inner sleeve 204 of matched in clearance, outer sleeve 207 is provided with the gear of ratchet for endoporus, inner sleeve 204 is fastened on fixing support rack 101 fixed axis 161 by key 191, by lock pawl alignment pin 206, two rotating lock pawls 208 are respectively housed in the axial both sides of inner sleeve 204, described lock pawl 208 being provided with spring holder 202, by arranging spring 171, lock pawl 208 and ratchet being kept in touch.
Specific embodiment is described after blackboard 11 is positioned at before being positioned at blackboard 1.
Realize the lifting of blackboard, due under the effect of ratchet mechanism 201, the first blackboard 1 be positioned at above can only be pulled to move downward, therefore, at the second flexible rack 41 with under the transmission of transposition gear 401, pull the second blackboard 11 to move upward, and all the other ratchet mechanisms 201 serve the effect that restriction second blackboard 11 moves downward, thus realize the lifting of blackboard.
The transposer two ends, front and back realizing replacing before and after blackboard are coaxially arranged with transposition gear 401, transposition gear 401 can use flexibly, before and after not needing during transposition, there is blackboard transposition in transposition gear 401 and the first flexible rack 4 engaged transmission when can prevent from writing; When replacing before and after blackboard is wanted, the first blackboard 1 is above moved to bottom, at this moment the flexible rack 4 bottom first flexible rack 4 at the first blackboard 1 top and the second blackboard 11 all just engages with transposition gear 401, the first blackboard 1 is only needed to press in the inside, under the rotation of transposition gear 401, the front and back transposition of blackboard can be realized.
Fixing support rack 101 is across being installed with gear 321 and regulating wheel 331, and gear 321 and the second flexible rack 41 engaged transmission, regulating wheel 331 plays the effect that change second flexible rack transports 41 veers and continuous transmission.
When blackboard is elevated, two pieces, front and back blackboard extruding collodion rub piece 31, thus clean for whole of the second blackboard 11 below erasing, and the chalk dust that erase process produces can not fly upward everywhere.
First blackboard 1 and the second blackboard 11 select surface to scribble the fiberglass base material of wear-resistant coating, Portable durable; When mounted, two pieces of blackboards be allowed to forward lap, and engage with ratchet mechanism 201 and the gear 401 that replaces, can correct engagement during to ensure lifting and to replace.
The above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (1)
1. transposition lift fast wipes the blackboard of dust before and after one kind, it is characterized in that: comprise the first blackboard (1), second blackboard (11), first flexible rack (4), article two, end to end second flexible rack (41), fixing support rack (101), ratchet mechanism (201), front and back transposer and board wiping device, described first blackboard (1), second blackboard (11) the right and left installed in front have first flexible rack (4) of complete cycle, described first blackboard (1), the left and right side of the second blackboard (11) is respectively provided with the common tooth bar of strip (2), fixing support rack (101) two ends are respectively provided with four ratchet mechanisms (201), described ratchet mechanism (201) is meshed with described common tooth bar (2), described fixing support rack (101) upper end and lower end are respectively horizontally disposed with two and are parallel to each other and two ends are provided with the gear shaft of gear (321), article two, the second flexible rack (41) winding described gear (321) and regulating wheel (331) upper and respectively with described first blackboard (1), the first flexible rack (4) on second blackboard (11) is meshed, described front and back transposer and board wiping device are flatly arranged on the stage casing of fixing support rack (101) across ground, described transposition gear (401) is arranged on transposer two ends, front and back, described board wiping device is collodion rub piece (31), between the transposition gear (401) being arranged on front and back transposer,
Article two, be parallel to each other and two ends gear (321) are installed gear shaft between be also horizontally disposed with the tensioning shaft that two ends are provided with regulating wheel (331);
Described ratchet mechanism (201) comprises two coaxial ratchets, described ratchet comprises outer sleeve (207) and the inner sleeve (204) of matched in clearance, outer sleeve (207) is provided with the gear of ratchet for endoporus, inner sleeve (204) is fastened on fixing support rack (101) fixed axis (161) by key (191), by lock pawl alignment pin (206), two rotating lock pawls (208) are respectively housed in inner sleeve (204) axial both sides, described lock pawl (208) is provided with spring holder (202), by arranging spring (171), lock pawl (208) and ratchet are kept in touch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686025.7A CN103692826B (en) | 2013-12-16 | 2013-12-16 | A kind of front and back transposition lift fast wipes the blackboard of dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310686025.7A CN103692826B (en) | 2013-12-16 | 2013-12-16 | A kind of front and back transposition lift fast wipes the blackboard of dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103692826A CN103692826A (en) | 2014-04-02 |
| CN103692826B true CN103692826B (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310686025.7A Expired - Fee Related CN103692826B (en) | 2013-12-16 | 2013-12-16 | A kind of front and back transposition lift fast wipes the blackboard of dust |
Country Status (1)
| Country | Link |
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| CN (1) | CN103692826B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313547A (en) * | 2014-07-07 | 2016-02-10 | 中国人民解放军军械工程学院 | Variable-track cyclic back projection blackboard |
| CN106128224A (en) * | 2016-09-13 | 2016-11-16 | 刘翔 | A kind of teaching board display device of anti-overtravel |
| CN106738063A (en) * | 2016-12-16 | 2017-05-31 | 安徽普伦智能装备有限公司 | A kind of separator |
| CN107160912A (en) * | 2017-06-30 | 2017-09-15 | 无锡市南长街小学 | A kind of Liftable type blackboard |
| CN108973443A (en) * | 2018-08-10 | 2018-12-11 | 张家诚 | A kind of cyclic switching formula blackboard convenient for erasing |
| CN108973444A (en) * | 2018-08-10 | 2018-12-11 | 张家诚 | A kind of reciprocal suitching type is from erasing blackboard |
| CN109572281A (en) * | 2019-01-22 | 2019-04-05 | 成都理工大学工程技术学院 | A kind of manual floatable chalk cleaning blackboard |
| CN110194015B (en) * | 2019-06-20 | 2020-12-11 | 永康市翌阳科技有限公司 | Teaching blackboard that prevents dust with supplementary function of erasing |
| CN111933009B (en) * | 2020-08-10 | 2022-04-29 | 山东育博苑文化传媒有限公司 | Audit teaching mode |
Citations (7)
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| CN2449932Y (en) * | 2000-08-31 | 2001-09-26 | 黄绍贤 | Sliding blackboard |
| CN201317203Y (en) * | 2008-11-25 | 2009-09-30 | 刘泉 | Circulation-type cleaning-free blackboard |
| WO2010040172A1 (en) * | 2008-10-06 | 2010-04-15 | David Kali Alexander Balint | A whiteboard |
| CN201941387U (en) * | 2010-11-08 | 2011-08-24 | 李卫红 | Recyclable and automatic cleaning blackboard |
| CN201970683U (en) * | 2010-11-22 | 2011-09-14 | 潘德洪 | Front-to-back transposition lifting blackboard |
| CN102529519A (en) * | 2012-03-08 | 2012-07-04 | 罗奕永 | Circulation type double-layer self-wiping blackboard |
| CN203637398U (en) * | 2013-12-16 | 2014-06-11 | 华南理工大学 | Novel lifting blackboard capable of switching between front position and rear position and erasing dust quickly |
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2013
- 2013-12-16 CN CN201310686025.7A patent/CN103692826B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2449932Y (en) * | 2000-08-31 | 2001-09-26 | 黄绍贤 | Sliding blackboard |
| WO2010040172A1 (en) * | 2008-10-06 | 2010-04-15 | David Kali Alexander Balint | A whiteboard |
| CN201317203Y (en) * | 2008-11-25 | 2009-09-30 | 刘泉 | Circulation-type cleaning-free blackboard |
| CN201941387U (en) * | 2010-11-08 | 2011-08-24 | 李卫红 | Recyclable and automatic cleaning blackboard |
| CN201970683U (en) * | 2010-11-22 | 2011-09-14 | 潘德洪 | Front-to-back transposition lifting blackboard |
| CN102529519A (en) * | 2012-03-08 | 2012-07-04 | 罗奕永 | Circulation type double-layer self-wiping blackboard |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103692826A (en) | 2014-04-02 |
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Granted publication date: 20150826 Termination date: 20201216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |