CN103919377B - Rotatable reflection prevention blackboard with adjusting angle - Google Patents
Rotatable reflection prevention blackboard with adjusting angle Download PDFInfo
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- CN103919377B CN103919377B CN201410200690.5A CN201410200690A CN103919377B CN 103919377 B CN103919377 B CN 103919377B CN 201410200690 A CN201410200690 A CN 201410200690A CN 103919377 B CN103919377 B CN 103919377B
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Abstract
The invention discloses a kind of rotatable reflection prevention blackboard with adjusting angle, comprise inner frame, outside framework and blackboard body, blackboard body is arranged in inner frame, inner frame is equipped with the mode can rotated around vertical center line and outside framework, also comprise dividing and positioning mechanism, on the basis ensureing existing various blackboard advantage, by simple refit, can realize making blackboard body produce the effect of certain inclination by promotion inner frame or blackboard body around own axis in field research, on the basis not affecting main body classroom location visual angle, both rationally can avoid there is being sunlight or blackboard body reflective in the situation such as light is strong, meet again the viewing angle requirements of both sides, classroom student, simultaneously, also be provided with dividing and positioning mechanism, quick position can be realized after blackboard body tilts.
Description
Technical field
The present invention relates to a kind of teaching aid, particularly the rotatable reflection prevention blackboard with adjusting angle of one.
Background technology
In field research, the existing blackboard used is owing to being fixed on body of wall, only have and just good visual angle is just had to the beholder of blackboard, the beholder being positioned at both sides, classroom but may because visual angle deflection or reflectively can not obtain good academic environment, cause the understanding of knowledge thorough not, classroom interactions's enthusiasm reduces.
For solving the problem, someone devises some reflection prevention blackboards, by installing reflector additional, or two plate bodys in left and right are set, the mode that two plate bodys can rotate around self side respectively reduces reflective, though there is certain effect, but DeGrain, use quite inconvenience, also someone to devise a kind of blackboard of adjustable tilt angle reflective to prevent, though this blackboard tiltable, but owing to lacking quick positioning mechanism, use shakiness, effect is not obvious equally, and the blackboard used in existing classroom mostly is type of push and pull up down blackboard, realized by chain drive, as adopted above-mentioned existing mode, repacking cost is high, be unfavorable for popularizing.
Therefore, need to improve existing blackboard, blackboard can be made to prevent reflective, space, Appropriate application classroom, make classroom substantially there is not blind area to blackboard, rationally avoid part reflective, and, only simply need be reequiped on the basis of existing blackboard, be realized the rational utilization of resource.
Summary of the invention
In view of this, the invention provides a kind of rotatable reflection prevention blackboard with adjusting angle, the basis of existing various blackboard is simply reequiped, blackboard body can be made to rotate, effectively prevent reflective, space, Appropriate application classroom, make classroom substantially there is not blind area to blackboard, and quick position can be realized after blackboard body tilts, use simple and reliable.
Rotatable reflection prevention blackboard with adjusting angle of the present invention, comprises inner frame, outside framework and blackboard body, and described blackboard body is arranged in inner frame, and described inner frame is equipped with the mode can rotated around vertical center line and described outside framework;
Also comprise dividing and positioning mechanism, described dividing and positioning mechanism comprises arc strip and positioning component, described arc strip is arranged at inside outside framework, described positioning component comprises spring and positioning ball, in the outside opening groove that described spring fitting is arranged on inner frame, circumferentially have some location at spherical surface grooves on inside described arc strip, described spring is connected with described positioning ball described positioning ball can be pressed on the mode forming location in corresponding location at spherical surface groove after inner frame rotates.
Further, projection screen is also comprised and for projection screen and the synchronization-moving synchronous drive mechanism of projecting apparatus, described synchronous drive mechanism comprises chain wheel drive assembly and gear drive assembly;
Described chain wheel drive assembly comprises chain wheel set, chain and bevel gear I, chain wheel set comprises chain wheel I, chain wheel II, sprocket shaft I and sprocket shaft II, sprocket shaft I and sprocket shaft II are all can be juxtaposed on outside framework top around the mode of own axis, sprocket shaft I and chain wheel I are in circumferencial direction secure fit, sprocket shaft II and chain wheel II are in circumferencial direction secure fit, described chain is fixedly connected with described projection screen upper end, and coordinate with described chain wheel I and described chain wheel II transmission, described bevel gear I is arranged at described sprocket shaft II leading section;
Described gear drive assembly comprises gear shaft, bevel gear II and bevel gear III, described gear shaft is can arrange around the mode of own axes, described gear shaft at least comprises primary pinion axle and the final-stage gear axle of transmission cooperation, the axis of primary pinion axle is vertical in transverse plane with the axis of sprocket shaft II, bevel gear II be fixedly installed on primary pinion axle in a circumferential direction and with bevel gear I conical surface engaged transmission, described final-stage gear axle axis is vertical in perpendicular with the installation shaft axis of projecting apparatus, bevel gear III is fixedly installed on final-stage gear axle in a circumferential direction, bevel gear IV conical surface engaged transmission that bevel gear III and projecting apparatus installation shaft circumferencial direction are fixedly installed.
Further, described gear shaft also comprises intermediate gear shaft I and intermediate gear shaft II, primary pinion axle is coordinated with intermediate gear shaft I transmission by gear pair I, intermediate gear shaft I is coordinated by gear pair II transmission with intermediate gear shaft II, and intermediate gear shaft II is coordinated by belt transmission with final-stage gear axle.
Further, be provided with runner assembly in the middle part of described inner frame upper and lower side, described runner assembly comprises rotating shaft and bearing, and rotating shaft is fixedly connected with inner frame and is rotatably assorted with outside framework.
Further, described arc strip is also provided with between location at spherical surface groove between two with inner frame, the guide chute that together movement leads is rotated to positioning ball.
Further, described blackboard body comprises plate body I and plate body II, and described plate body I and described plate body II shift to install, and described plate body I and described plate body II are all equipped with the mode that can vertically move up and down and inner frame single-degree-of-freedom.
Further, described location at spherical surface groove arranges 5.
Further, described inner frame rotates angle of inclination is 0 °-15 °.
Further, the resultant gear ratio of described gear drive assembly is 1:8.
Further, described inner frame is also provided with for the push-and-pull assembly to blackboard body push-and-pull, described push-and-pull assembly comprises chain drive-belt and can be arranged at the gear on inner frame around the mode of own axis, chain drive-belt one end is fixedly connected with plate body I, the other end is walked around gear and is fixedly connected with plate body II, and on described inner frame, corresponding plate body I and plate body II are respectively provided with a moving track.。
Beneficial effect of the present invention: rotatable reflection prevention blackboard with adjusting angle of the present invention, on the basis ensureing existing various blackboard advantage, by simple refit, can realize making blackboard body produce the effect of certain inclination by promotion inner frame or blackboard body around own axis in field research, on the basis not affecting main body classroom location visual angle, both rationally can avoid there is being sunlight or blackboard body reflective in the situation such as light is strong, meet again the viewing angle requirements of both sides, classroom student, simultaneously, also be provided with dividing and positioning mechanism, quick position can be realized after blackboard body tilts, structural design of the present invention is simple, without complex parts, be easy to processing, cost is low, assembling capacity and manufacturability are all better, and simple to operation, not only can solve series of problems in teaching process, and on health without impact, environmentally safe, there is good general applicability and promotional value.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is Fig. 1 schematic top plan view;
Fig. 3 is that top view is looked on Fig. 1 right side.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, Fig. 2 is Fig. 1 schematic top plan view, Fig. 3 is that top view is looked on Fig. 1 right side, as shown in the figure: the rotatable reflection prevention blackboard with adjusting angle of the present embodiment, comprise inner frame 1, outside framework 2 and blackboard body, described blackboard body is arranged in inner frame 1, and described inner frame 1 is equipped with the mode can rotated around vertical center line and described outside framework 2;
Also comprise dividing and positioning mechanism, described dividing and positioning mechanism comprises arc strip 3 and positioning component, described arc strip 3 is arranged at inside outside framework 2, described positioning component comprises spring 5 and positioning ball 6, described spring 5 is installed in the outside opening groove of setting on inner frame 1, circumferentially have some location at spherical surface grooves 4 on inside described arc strip 3, described spring 5 is connected with described positioning ball 6 described positioning ball 6 can be pressed on the mode forming location in corresponding location at spherical surface groove after inner frame 1 rotates, wherein, spring 5 has certain pretightning force, formed along the outside pressure of open slot to positioning ball 6, make it can keep being pressed against on arc strip 3, in practice, certain coefficient of friction to be had between arc strip 3 and positioning ball 6, this coefficient of friction will make to ensure that positioning component slides stably in the location at spherical surface groove and guide groove on arc strip 3 surface, ensure again to prevent from rubbing too small between positioning ball 6 and location at spherical surface groove and the job requirement of locating or skidding off in guide chute road can not being reached, in addition, location at spherical surface groove also can be other structure certainly, as locating hole, and the aperture of locating hole is less than the diameter of positioning ball 6, in order to avoid positioning ball 6 drops in locating hole the phenomenon causing and be difficult to skid off,
The present invention in use, if need blackboard to turn an angle, only need push away blackboard body plate face by suitable dynamics, the beholder on the right can be allowed to see if make it rotate certain angle, then need the left side standing in blackboard, firmly pushed away inward on the left side of blackboard body, blackboard body will rotate certain angle, and vice versa.
In the present embodiment, also comprise projection screen 7 and for projection screen 7 and the synchronization-moving synchronous drive mechanism of projecting apparatus, described synchronous drive mechanism comprises chain wheel drive assembly and gear drive assembly;
Described chain wheel drive assembly comprises chain wheel set, chain 8 and bevel gear I 9, chain wheel set comprises chain wheel I 10, chain wheel II 11, sprocket shaft I 12 and sprocket shaft II 13, sprocket shaft I 12 and sprocket shaft II 13 are all can be juxtaposed on outside framework 2 top around the mode of own axis, sprocket shaft I 12 and chain wheel I 10 are in circumferencial direction secure fit, sprocket shaft II 13 and chain wheel II 11 are in circumferencial direction secure fit, described chain 8 is fixedly connected with described projection screen 7 upper end, and coordinate with described chain wheel I 10 and described chain wheel II 11 transmission, described bevel gear I 9 is arranged at described sprocket shaft II 13 leading section,
Described gear drive assembly comprises gear shaft, bevel gear II 14 and bevel gear III 15, described gear shaft is can arrange around the mode of own axes, described gear shaft at least comprises primary pinion axle 16 and the final-stage gear axle 17 of transmission cooperation, the axis of primary pinion axle 16 is vertical in transverse plane with the axis of sprocket shaft II 13, bevel gear II 14 be fixedly installed on primary pinion axle 16 in a circumferential direction and with bevel gear I 9 conical surface engaged transmission, described final-stage gear axle 17 axis is vertical in perpendicular with installation shaft 19 axis of projecting apparatus, bevel gear III 15 is fixedly installed on final-stage gear axle 17 in a circumferential direction, bevel gear IV 18 conical surface engaged transmission that bevel gear III 15 and projecting apparatus installation shaft 19 circumferencial direction are fixedly installed,
In actual applications, blackboard is usually in conjunction with projector equipment one piece use, projector equipment generally includes projecting apparatus and projection screen 7, projection screen 7 mostly is white screen, in teaching process, projection screen 7 can block the blackboard of a part, blackboard is caused to reduce by write area, when projection screen 7 uses, projection screen 7 can not be received and kept, repeatedly can only clean blackboard, otherwise, projector equipment will cut out, to use the blackboard part being projected screen 7 and blocking, when using projector equipment, again projecting apparatus and projection screen 7 are opened, but start and all need to wait for a period of time with closedown projecting apparatus, cause the waste of class period, for solving this problem, arrange and be used for projection screen 7 and the synchronization-moving synchronous drive mechanism of projecting apparatus, projection screen 7 upper end and chain 8 are fixed, do not needing to use projecting apparatus, only with hand projection screen 7 need be moved and move left and right a segment distance, chain 8 is driven to move, chain 8 drives chain wheel set, thus order about gear drive assembly transmission is delivered in the installation shaft of projecting apparatus, thus make projecting apparatus with projecting apparatus synchronous axial system to certain angle, not only effectively can prevent projector distortion, projecting apparatus also can be made to throw in image and not to be radiated at the part blackboard being projected screen 7 and blocking, just the blackboard that projection screen 7 blocks can be used, it also avoid simultaneously and repeatedly open, close projecting apparatus, and the time needed for folding and unfolding projection screen 7, in addition, projection screen 7 is set to white screen, the screen of projecting apparatus can be used as, also can write with black watercolor pencil, reach the use of two aspects.
In the present embodiment, described gear shaft also comprises intermediate gear shaft I 20 and intermediate gear shaft II 21, primary pinion axle 16 is coordinated with intermediate gear shaft I 20 transmission by gear pair I, intermediate gear shaft I 20 is coordinated by gear pair II transmission with intermediate gear shaft II 21, and intermediate gear shaft II 21 is coordinated by belt 22 transmission with final-stage gear axle 17, as shown in the figure, gear pair I comprises circumferencial direction and is fixedly installed on the driven gear I 24 that the driving gear I 23 of primary pinion axle 16 and circumferencial direction are fixedly installed on intermediate gear shaft I 20, driving gear I 23 and driven gear I 24 engaged transmission, gear pair II comprises circumferencial direction and is fixedly installed on the driven gear II 26 that the driving gear II 25 of intermediate gear shaft I 20 and circumferencial direction are fixedly installed on intermediate gear shaft II 21, driving gear II 25 and driven gear II 26 engaged transmission, intermediate gear shaft II 21 is along the circumferential direction also fixed with belt pulley I, final-stage gear axle 17 is along the circumferential direction also fixed with belt pulley II, belt 22 is enclosed within belt pulley I and belt pulley II upper driving coordinates, increase Multi-stage transmission gear, when ensureing compared with high transmission ratio, reach the object reducing gear size, mounting structure is compacter.
In the present embodiment, be provided with runner assembly in the middle part of described inner frame 1 upper and lower side, described runner assembly comprises rotating shaft 27 and bearing 28, and rotating shaft is fixedly connected with inner frame 1 and is rotatably assorted with outside framework 2.
In the present embodiment, arc strip 3 is also provided with between location at spherical surface groove between two with inner frame 1, the guide chute that together movement leads is rotated to positioning ball 6; Guide effect is formed to the mobile of positioning ball 6 of positioning component, prevents wrong sliding.
In the present embodiment, described blackboard body comprises plate body I 29 and plate body II 30, and described plate body I 29 and described plate body II 30 shift to install, and described plate body I 29 and described plate body II 30 are all equipped with the mode that can vertically move up and down and inner frame 1 single-degree-of-freedom; Described inner frame 1 is also provided with for the push-and-pull assembly to blackboard body push-and-pull, described push-and-pull assembly comprises chain drive-belt 31 and can be arranged at the gear 32 on inner frame 1 around the mode of own axis, chain drive-belt 31 one end is fixedly connected with plate body I 29, the other end is walked around gear 32 and is fixedly connected with plate body II 30, and on described inner frame 1, corresponding plate body I 29 and plate body II 30 are respectively provided with a moving track.
In the present embodiment, described location at spherical surface groove arranges 5; There is good locating effect.
In the present embodiment, it is 0 °-15 ° that described inner frame 1 rotates angle of inclination; On the basis ensureing main body classroom location visual angle, both rationally can avoid the reflective of in the situation such as have sunlight or light is strong blackboard body, meet again the viewing angle requirements of both sides, classroom student.
In the present embodiment, the resultant gear ratio of described gear drive assembly is 1:8; When projection screen 7 moves horizontally about 300mm, the corner that can make projecting apparatus is 90 °, has and coordinates projection screen 7 and the synchronization-moving effect of projecting apparatus preferably.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a rotatable reflection prevention blackboard with adjusting angle, is characterized in that: comprise inner frame, outside framework and blackboard body, and described blackboard body is arranged in inner frame, and described inner frame is equipped with the mode can rotated around vertical center line and described outside framework;
Also comprise dividing and positioning mechanism, described dividing and positioning mechanism comprises arc strip and positioning component, described arc strip is arranged at inside outside framework, described positioning component comprises spring and positioning ball, in the outside opening groove that described spring fitting is arranged on inner frame, circumferentially have some location at spherical surface grooves on inside described arc strip, described spring is connected with described positioning ball described positioning ball can be pressed on the mode forming location in corresponding location at spherical surface groove after inner frame rotates.
2. rotatable reflection prevention blackboard with adjusting angle according to claim 1, is characterized in that: also comprise projection screen and for projection screen and the synchronization-moving synchronous drive mechanism of projecting apparatus, described synchronous drive mechanism comprises chain wheel drive assembly and gear drive assembly;
Described chain wheel drive assembly comprises chain wheel set, chain and bevel gear I, chain wheel set comprises chain wheel I, chain wheel II, sprocket shaft I and sprocket shaft II, sprocket shaft I and sprocket shaft II are all can be juxtaposed on outside framework top around the mode of own axis, sprocket shaft I and chain wheel I are in circumferencial direction secure fit, sprocket shaft II and chain wheel II are in circumferencial direction secure fit, described chain is fixedly connected with described projection screen upper end, and coordinate with described chain wheel I and described chain wheel II transmission, described bevel gear I is arranged at described sprocket shaft II leading section;
Described gear drive assembly comprises gear shaft, bevel gear II and bevel gear III, described gear shaft is can arrange around the mode of own axes, described gear shaft at least comprises primary pinion axle and the final-stage gear axle of transmission cooperation, the axis of primary pinion axle is vertical in transverse plane with the axis of sprocket shaft II, bevel gear II be fixedly installed on primary pinion axle in a circumferential direction and with bevel gear I conical surface engaged transmission, described final-stage gear axle axis is vertical in perpendicular with the installation shaft axis of projecting apparatus, bevel gear III is fixedly installed on final-stage gear axle in a circumferential direction, bevel gear IV conical surface engaged transmission that bevel gear III and projecting apparatus installation shaft circumferencial direction are fixedly installed.
3. rotatable reflection prevention blackboard with adjusting angle according to claim 2, it is characterized in that: described gear shaft also comprises intermediate gear shaft I and intermediate gear shaft II, primary pinion axle is coordinated with intermediate gear shaft I transmission by gear pair I, intermediate gear shaft I is coordinated by gear pair II transmission with intermediate gear shaft II, and intermediate gear shaft II is coordinated by belt transmission with final-stage gear axle.
4. rotatable reflection prevention blackboard with adjusting angle according to claim 3, is characterized in that: be provided with runner assembly in the middle part of described inner frame upper and lower side, described runner assembly comprises rotating shaft and bearing, and rotating shaft is fixedly connected with inner frame and is rotatably assorted with outside framework.
5. rotatable reflection prevention blackboard with adjusting angle according to claim 4, is characterized in that: described arc strip is also provided with between location at spherical surface groove between two and rotates with inner frame the guide chute that together movement leads to positioning ball.
6. rotatable reflection prevention blackboard with adjusting angle according to claim 5, it is characterized in that: described blackboard body comprises plate body I and plate body II, described plate body I and described plate body II shift to install, and described plate body I and described plate body II are all equipped with the mode that can vertically move up and down and inner frame single-degree-of-freedom.
7. rotatable reflection prevention blackboard with adjusting angle according to claim 6, is characterized in that: described location at spherical surface groove arranges 5.
8. rotatable reflection prevention blackboard with adjusting angle according to claim 7, is characterized in that: it is 0 °-15 ° that described inner frame rotates angle of inclination.
9. rotatable reflection prevention blackboard with adjusting angle according to claim 8, is characterized in that: the resultant gear ratio of described gear drive assembly is 1:8.
10. rotatable reflection prevention blackboard with adjusting angle according to claim 9, it is characterized in that: described inner frame is also provided with for the push-and-pull assembly to blackboard body push-and-pull, described push-and-pull assembly comprises chain drive-belt and can be arranged at the gear on inner frame around the mode of own axis, chain drive-belt one end is fixedly connected with plate body I, the other end is walked around gear and is fixedly connected with plate body II, and on described inner frame, corresponding plate body I and plate body II are respectively provided with a moving track.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200690.5A CN103919377B (en) | 2014-05-13 | 2014-05-13 | Rotatable reflection prevention blackboard with adjusting angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410200690.5A CN103919377B (en) | 2014-05-13 | 2014-05-13 | Rotatable reflection prevention blackboard with adjusting angle |
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| Publication Number | Publication Date |
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| CN103919377A CN103919377A (en) | 2014-07-16 |
| CN103919377B true CN103919377B (en) | 2015-12-16 |
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| CN201410200690.5A Expired - Fee Related CN103919377B (en) | 2014-05-13 | 2014-05-13 | Rotatable reflection prevention blackboard with adjusting angle |
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| CN105427681B (en) * | 2015-12-08 | 2018-06-05 | 成都大学 | A kind of Mobile multimedia tutoring system |
| CN105856914B (en) * | 2016-04-12 | 2018-05-11 | 宿州学院 | A kind of blackboard component easy to adjusting angle |
| CN106346995A (en) * | 2016-09-12 | 2017-01-25 | 芜湖能盟信息技术有限公司 | Rotatable blackboard and the dust-free eraser thereof |
| CN106427314A (en) * | 2016-09-12 | 2017-02-22 | 芜湖能盟信息技术有限公司 | Rotary blackboard and electromagnetic type blackboard eraser thereof |
| CN106364229A (en) * | 2016-09-12 | 2017-02-01 | 芜湖能盟信息技术有限公司 | Rotary blackboard and dust removal device thereof |
| CN106346981A (en) * | 2016-09-12 | 2017-01-25 | 芜湖能盟信息技术有限公司 | Blackboard for preventing light reflection |
| CN106346985A (en) * | 2016-09-12 | 2017-01-25 | 芜湖能盟信息技术有限公司 | Rotatable blackboard and the movable dust removal device thereof |
| CN106626893B (en) * | 2016-11-24 | 2018-08-24 | 牡丹江师范学院 | A kind of Art undergraduate auxiliary device |
| CN110364040A (en) * | 2019-06-18 | 2019-10-22 | 山东电子职业技术学院 | A kind of English word random generation device of assisted memory |
| CN110801359B (en) * | 2019-10-30 | 2021-11-09 | 漳州卫生职业学院 | Operation platform for basic nursing |
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| CN201385508Y (en) * | 2009-03-28 | 2010-01-20 | 周全 | Angle-adjustable anti-reflection blackboard |
| KR20120027938A (en) * | 2010-09-14 | 2012-03-22 | 예영시스템 주식회사 | Angle regulating board |
| CN202413113U (en) * | 2012-01-10 | 2012-09-05 | 葛雪婷 | Anti-reflecting blackboard |
| CN203198511U (en) * | 2013-04-25 | 2013-09-18 | 赵献春 | Angle-adjustable blackboard |
| CN203885068U (en) * | 2014-05-13 | 2014-10-22 | 重庆交通大学 | Rotatable angle-adjusting anti-reflective blackboard |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201385508Y (en) * | 2009-03-28 | 2010-01-20 | 周全 | Angle-adjustable anti-reflection blackboard |
| KR20120027938A (en) * | 2010-09-14 | 2012-03-22 | 예영시스템 주식회사 | Angle regulating board |
| CN202413113U (en) * | 2012-01-10 | 2012-09-05 | 葛雪婷 | Anti-reflecting blackboard |
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| CN203885068U (en) * | 2014-05-13 | 2014-10-22 | 重庆交通大学 | Rotatable angle-adjusting anti-reflective blackboard |
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