CN204557813U - A kind of historical teaching sight teaching aid - Google Patents
A kind of historical teaching sight teaching aid Download PDFInfo
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- CN204557813U CN204557813U CN201520264535.XU CN201520264535U CN204557813U CN 204557813 U CN204557813 U CN 204557813U CN 201520264535 U CN201520264535 U CN 201520264535U CN 204557813 U CN204557813 U CN 204557813U
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Abstract
The utility model discloses a kind of historical teaching sight teaching aid, relate generally to history teaching aid field.Comprise shell and spool, the straight cylinder of described shell to be xsect be annulus, described spool is multiple and is arranged in cavity, described spool comprises rotating shaft, roll shaft and sight curtain, described rotating shaft to be socketed in axis hole and with roll shaft by axis hole clearance fit, described roll shaft is connected with fixing bottom surface axial rotation centered by rotating shaft, also be provided with wind spring, the two ends of described wind spring are connected with internal messing ratchet and block plate respectively, described one end of sight curtain is fixedly connected with the sidewall of roll shaft, described sight curtain to be passed by cylindrical void away from one end of roll shaft and is exposed to housing exterior.The beneficial effects of the utility model are: special standard shows teaching method to historigram, is shown intuitively by teaching pattern, simple and convenient, also have anti-from retraction function, service condition is by the restriction of time, place and teaching condition, and cost is low, has the meaning of popularity.
Description
Technical field
The utility model relates to history teaching aid field, specifically a kind of historical teaching sight teaching aid.
Background technology
Quality of instruction problem is the outstanding problem that Reasearch On Educational Sustainable Development faces, and is the root problem of student's survival and development.Particularly as being about to the university student stepping into society, the quality of quality of instruction is directly connected to quality and the development of student.Historical teaching as the important foundation subject of college teaching, to student's personality form and vital effect is played in the foundation of artistic appreciation.But the historical teaching of existing university still to there is the content of courses outmoded, the problems such as teaching means is single, cannot build lively teaching atmosphere, cause efficiency of teaching low, and Students ' Learning such as to be short of power at the problem.
Along with the modernization restructuring of basic education content and structure, the progress of teaching and the inevitable constantly increase of the degree of depth, and instructional blocks of time and teaching material total amount do not allow to expand, how when not increasing the weight of student load, make great efforts to seek best teaching efficiency, the key breakthrough mouth being the development of efficient historical teaching and changing.And historigram teaching can be showed the form such as the concise and to the point symbol of textbook content with character narrate, word, image (historical personage figure, historical relic figure, ruins figure, schematic diagram, historic site figure etc.), map, form, in order to declarative knowledge structure, disclose historical development rule, for teaching material enhances intuitive, readability, appreciating, for the dry history key element of historical personage, place name, age, time, event etc. adds space-time sense.
It is from physiology, the psychological characteristics of people, has both given one's full attention to performance two cerebral hemispheres respective advantage in thinking, and has done one's utmost again to emphasize the positive role of sense organ in teaching process; The unidirectional delivery becoming classroom is multidirectional transmission, becomes " discoverable type " study that passive " accepting formula " study of student is active and creates condition.Be conducive to motivating students' interest in learning, enliven the thinking of student, help student to deepen the understanding of teaching material and memory, and improve the analysis of student, comprehensive, the ability summarizing, conclude.
Simultaneously, give full play to thick and heavy abundant aesthetic education factor in history, the institute of history deposits, the place of U.S., the treasure-house of a history teaching material inherently aesthetic education, if the painting and calligraphy after light, Northern and Southern Dynasties of the literature garden of Chinese Wei, Shanxi and engraving, Tang Zhishi, word after five generations, the novel that unit is later and drama, and successive dynasties famous building and various artistic handicraft, the effect of its aesthetic education of row among education invariably.The image of these concrete, distinct U.S.s can not only infect student, excites it to the great interest of history student, and can affect the psychological activity of student, for cultivating their elevated sentiments and good moral conduct lays the first stone.
In a word, promoting historigram teaching, is effective breach of modern university historical teaching transition and upgrade.But in existing college teaching device, still not for the teaching aid special of historigram teaching, if use Multimedia assisted instruction, the picture not only projected is very unintelligible, be difficult to when carrying out the displaying of the History such as age, form differentiate, and cost high limited resource is many, be unfavorable for extensive popularization.
Utility model content
The purpose of this utility model is to provide a kind of historical teaching sight teaching aid, its special standard shows teaching method to historigram, according to design and the needs of course, the teaching material related content such as symbol, word, various historical personage figure, cultural relics and historic sites figure, scene graph, map, age demonstration chart is shown intuitively, simple and convenient, also have anti-from retraction function, service condition is by the restriction of time, place and teaching condition, and cost is compared the Multi-media teaching tool such as computer, projector and reduced greatly, there is the meaning that popularity is tentative.
The utility model for achieving the above object, is achieved through the following technical solutions:
A kind of historical teaching sight teaching aid, comprise shell and spool, the straight cylinder of described shell to be xsect be annulus, and its inside arranges the cavity of ring cylinder, the bottom surface of described cavity one end is fixing bottom surface, described spool is multiple and is arranged in cavity, described spool comprises rotating shaft, roll shaft and sight curtain, one end of described rotating shaft is connected with fixing plane perpendicular, the middle part of described rotating shaft disconnects and gap is connected by return spring, described rotating shaft arranges block plate away from one end of fixing bottom surface, described block plate is circular and its external diameter is greater than the external diameter of rotating shaft, the central authorities of described block plate arrange button, on described shell, corresponding button position is provided with through hole, described button passes through hole away from one end of block plate and is exposed to housing exterior, described roll shaft is the right cylinder that length is equal with rotating shaft, the cental axial position of described roll shaft arranges the axis hole running through roll shaft, described rotating shaft to be socketed in axis hole and with roll shaft by axis hole clearance fit, described roll shaft is connected with fixing bottom surface axial rotation centered by rotating shaft, described roll shaft arranges cavity away from one end of fixing bottom surface, described cavity is connected with axis hole, the internal diameter of described cavity is greater than the internal diameter of axis hole and corresponding with the external diameter of block plate, described cavity arranges internal messing ratchet away from one end of fixing bottom surface, the internal diameter of described internal messing ratchet is greater than the internal diameter of cavity, the inwall of described internal messing ratchet arranges the tooth of multiple asymmetric circular arc, described block plate is provided with away from the one side of fixing bottom surface the ratchet matched with tooth, one end and the block plate of described ratchet are hinged, the other end of described ratchet is connected with tension spring, described tension spring is connected with block plate away from one end of ratchet, also wind spring is provided with between described internal messing ratchet and block plate, the two ends of described wind spring are connected with internal messing ratchet and block plate respectively, described one end of sight curtain is fixedly connected with the sidewall of roll shaft, described shell is provided with the cylindrical void corresponding with sight curtain, described sight curtain to be passed by cylindrical void away from one end of roll shaft and is exposed to housing exterior, one end that described sight curtain is exposed to housing exterior arranges the card article that width is greater than cylindrical void.
Also comprise rotating base, the outer wall of described rotating base and the inwall of shell are rotationally connected by rolling bearing.
Also comprise lanyard, the two ends of described lanyard are connected with the bottom surface, two ends of rotating base.
Described spool is along the even circumferential distribution of fixing bottom surface.
Described card article arranges designation card, and the content of described designation card is corresponding with the content of sight curtain.
Contrast prior art, the beneficial effects of the utility model are:
1, the special standard of the utility model shows teaching method to historigram, be provided with the spool of multiple band sight curtain, each sight curtain all can according to the design of course and needs, by symbol, word, various historical personage figure, cultural relics and historic sites figure, scene graph, map, the teaching material related content air brushing such as age demonstration chart become clear, lively demonstration pattern, significantly sight curtain is utilized to show intuitively to student, build dense sight atmosphere, strengthen and bring sense and space-time sense into, not only effectively motivate students' interest in learning, enliven the human thinking of student, strengthen student to the understanding of the content of courses and memory, sight curtain also by exquisiteness represents the shock effect that history coagulates thick U.S. fully, training student elevated sentiments and attainment.
2, the utility model is operationally:
Specifically acting as of each structural relation of the utility model:
Described card article is arranged at the outer end of sight curtain, by sight curtain gear in the outside of shell cylindrical void, sight curtain can be avoided from the whole retraction shell of cylindrical void to be difficult to pull-out and show.Card article has constant weight simultaneously, also has the sight curtain utilizing the downward stretching expansion of own wt, makes the more complete sufficient effect of the displaying of pattern.
When curtain pulls out, because the tooth of described ratchet and internal messing ratchet can forward slide, therefore the rotation of described roll shaft is smooth and easy, can easily pull out sight curtain.
Described internal messing ratchet is connected by wind spring with block plate, therefore when sight curtain pulls out, drives outside running roller and put rotation, wind spring is out of shape and has the pulling force of reverse backrush, thus making sight curtain have the potential energy of automatic rewinding.
When described sight curtain rollback, because described ratchet can snap in the tooth of internal messing ratchet, and described ratchet is under the tractive force restriction of tension spring, the internal messing ratchet of backwards rotation is blocked and brakes, make roll shaft cannot backrush, thus stop the backrush of sight curtain, avoid its automatic retracted, and determined only under the state stretched.
When sight curtain is regained shell by needs, Push button, described block plate is made to receive inside pressure, be positioned at the return spring forced compression in the middle part of rotating shaft, make rotating disk have inside rectilinear path change, thus the ratchet on rotating disk and tooth are departed from, remove the braking for internal gear, therefore running roller returns backrush rapidly under power pulling function at wind spring, sight curtain to be wound on running roller and to regain in shell.
By cooperatively interacting of above structural relation, make the utility model in use: when needs aided education is shown, select applicable sight curtain and pull it, sight curtain is fully stretched, by required symbol, word, form or patterned display out, the object of historigram teaching can be reached.When show complete need to pack up time, press the button of housing exterior, sight curtain can automatic rollback.The utility model clear patterns is directly perceived, simple and convenient, also have anti-from retraction function, service condition is by the restriction of time, place and teaching condition, and cost is compared the Multi-media teaching tool such as computer, projector and reduced greatly, there is the meaning that popularity is tentative.
3, the setting of described rotating base, can make shell relatively rotate base rotation, and makes the more smooth smoothness of rotation by the connection of rolling bearing.Thus the convenient sight curtain to all sides of shell is selected and shows.
4, the setting of described lanyard, conveniently the utility model is hung displaying and lift and carry, it is more convenient to use.And described lanyard is connected with rotating base, do not hinder the rotation of shell.
5, described spool is uniformly distributed in cavity, facilitates choice and operation.
6, the setting of described designation card, conveniently selects sight curtain.
Accompanying drawing explanation
Accompanying drawing 1 is schematic diagram of the present utility model.
Accompanying drawing 2 is schematic diagram of the utility model spool.
Accompanying drawing 3 is schematic diagram of the utility model roll shaft.
Accompanying drawing 4 is schematic diagram of the utility model rotating shaft.
Accompanying drawing 5 is the vertical views under the utility model open mode.
Label shown in accompanying drawing:
1, shell; 2, spool; 3, cavity; 4, fixing bottom surface; 5, rotating shaft; 6, roll shaft; 7, sight curtain; 8, return spring; 9, block plate; 10, button; 11, through hole; 12, axis hole; 13, cavity; 14, internal messing ratchet; 15, tooth; 16, ratchet; 17, tension spring; 18, wind spring; 19, cylindrical void; 20, card article; 21, rotating base.
Embodiment
Below in conjunction with specific embodiment, set forth the utility model further.Should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.
Described in the utility model is a kind of historical teaching sight teaching aid, agent structure comprises shell 1 and spool 2, described shell 1 for xsect be the straight cylinder of annulus, and its inside arranges the cavity 3 of ring cylinder, the bottom surface of described cavity 3 one end is fixing bottom surface 4, described spool 2 is multiple and is arranged in cavity 3, described spool 2 comprises rotating shaft 5, roll shaft 6 and sight curtain 7, one end of described rotating shaft 5 is connected with fixing bottom surface 4 is vertical, the middle part of described rotating shaft 5 disconnects and gap is connected by return spring 8, described rotating shaft 5 arranges block plate 9 away from one end of fixing bottom surface 4, described block plate 9 is circular and its external diameter is greater than the external diameter of rotating shaft 5, the central authorities of described block plate 9 arrange button 10, on described shell 1, corresponding button 10 position is provided with through hole 11, described button 10 passes through hole 11 away from one end of block plate 9, and to be exposed to shell 1 outside, Push button 10, described block plate 9 is made to receive inside pressure, be positioned at return spring 8 forced compression in the middle part of rotating shaft 5, rotating disk is made to have inside rectilinear path change.Described roll shaft 6 is the right cylinder that length is equal with rotating shaft 5, the cental axial position of described roll shaft 6 arranges the axis hole 12 running through roll shaft 6, described rotating shaft 5 to be socketed in axis hole 12 and with roll shaft 6 by axis hole 12 clearance fit, described roll shaft 6 is connected with fixing bottom surface 4 axial rotation centered by rotating shaft 5, described roll shaft 6 arranges cavity 13 away from one end of fixing bottom surface 4, described cavity 13 is connected with axis hole 12, the internal diameter of described cavity 13 is greater than the internal diameter of axis hole 12 and corresponding with the external diameter of block plate 9, described cavity 13 arranges internal messing ratchet 14 away from one end of fixing bottom surface 4, the internal diameter of described internal messing ratchet 14 is greater than the internal diameter of cavity 13, the inwall of described internal messing ratchet 14 arranges the tooth 15 of multiple asymmetric circular arc, described block plate 9 is provided with away from the one side of fixing bottom surface 4 ratchet 16 matched with tooth 15, one end and the block plate 9 of described ratchet 16 are hinged, the other end of described ratchet 16 is connected with tension spring 17, described tension spring 17 is connected with block plate 9 away from one end of ratchet 16, because described ratchet 16 can forward slide with the tooth 15 of internal messing ratchet 14, therefore the rotation of described roll shaft 6 is smooth and easy, can easily pull out sight curtain 7.When described sight curtain 7 rollback, because described ratchet 16 can snap in the tooth 15 of internal messing ratchet 14, and described ratchet 16 is under the tractive force restriction of tension spring 17, the internal messing ratchet 14 of backwards rotation is blocked and brakes, make roll shaft 6 cannot backrush, thus stop the backrush of sight curtain 7, avoid its automatic retracted, and determined only under the state stretched.If but Push button 10, the inside indentation of compressing rotating disk, thus the ratchet 16 on rotating disk is departed from tooth 15, remove the braking that internal messing tooth 15 is taken turns, therefore running roller returns backrush rapidly under power pulling function at wind spring 18, sight curtain 7 to be wound on running roller and to regain in shell 1.Wind spring 18 is also provided with between described internal messing ratchet 14 and block plate 9, the two ends of described wind spring 18 are connected with internal messing ratchet 14 and block plate 9 respectively, described internal messing ratchet 14 is connected by wind spring 18 with block plate 9, therefore when sight curtain 7 pulls out, drive outside running roller and put rotation, make wind spring 18 be out of shape and have the pulling force of reverse backrush, thus make sight curtain 7 have the potential energy of automatic rewinding.One end of described sight curtain 7 is fixedly connected with the sidewall of roll shaft 6, described shell 1 is provided with the cylindrical void 19 corresponding with sight curtain 7, described sight curtain 7 to be passed by cylindrical void 19 away from one end of roll shaft 6 and to be exposed to shell 1 outside, and one end that described sight curtain 7 is exposed to shell 1 outside arranges the card article 20 that width is greater than cylindrical void 19.Described card article 20 is arranged at the outer end of sight curtain 7, sight curtain 7 can be kept off in the outside of shell 1 cylindrical void 19, avoids sight curtain 7 to be difficult to pull-out from the whole retraction shell 1 of cylindrical void 19 and shows.Card article 20 has constant weight simultaneously, also has the sight curtain 7 utilizing the downward stretching expansion of own wt, makes the more complete sufficient effect of the displaying of pattern.
By cooperatively interacting of above structural relation, make the utility model in use: when needs aided education is shown, select applicable sight curtain 7 and pull it, sight curtain 7 is fully stretched, by required symbol, word, form or patterned display out, the object of historigram teaching can be reached.When show complete need to pack up time, press the button 10 of lower casing 1 outside, sight curtain 7 can automatic rollback.
The special standard of the utility model shows teaching method to historigram, be provided with the spool 2 of multiple band sight curtain 7, each sight curtain 7 all can according to the design of course and needs, by symbol, word, various historical personage figure, cultural relics and historic sites figure, scene graph, map, the teaching material related content air brushing such as age demonstration chart become clear, lively demonstration pattern, significantly sight curtain 7 is utilized to show intuitively to student, build dense sight atmosphere, strengthen and bring sense and space-time sense into, not only effectively motivate students' interest in learning, enliven the human thinking of student, strengthen student to the understanding of the content of courses and memory, sight curtain 7 also by exquisiteness represents the shock effect that history coagulates thick U.S. fully, training student elevated sentiments and attainment.And the utility model is simple and convenient, also have anti-from retraction function, service condition is by the restriction of time, place and teaching condition, and cost is compared the Multi-media teaching tool such as computer, projector and reduced greatly, has the meaning that popularity is tentative.
Conveniently use, also comprise rotating base 21, shell 1 can be made to relatively rotate base 21 and rotate, the outer wall of described rotating base 21 and the inwall of shell 1 are rotationally connected by rolling bearing, make the more smooth smoothness of rotation, thus conveniently the sight curtain 7 of shell 1 week side is selected and shown.
Conveniently show and carry, also comprising lanyard, the two ends of described lanyard are connected with the bottom surface, two ends of rotating base 21.Use, carry more convenient, and do not hinder the rotation of shell 1.
Preferably, described spool 2 distributes along the even circumferential of fixing bottom surface 4.Facilitate choice and operation.
Conveniently search required sight curtain 7, described card article 20 arranges designation card, the content of described designation card is corresponding with the content of sight curtain 7.Conveniently sight curtain 7 is selected.
Embodiment: described in the utility model is a kind of historical teaching sight teaching aid, agent structure comprises shell 1 and spool 2, described shell 1 for xsect be the straight cylinder of annulus, and its inside arranges the cavity 3 of ring cylinder, the bottom surface of described cavity 3 one end is fixing bottom surface 4, described spool 2 is multiple and is arranged in cavity 3, described spool 2 comprises rotating shaft 5, roll shaft 6 and sight curtain 7, one end of described rotating shaft 5 is connected with fixing bottom surface 4 is vertical, the middle part of described rotating shaft 5 disconnects and gap is connected by return spring 8, described rotating shaft 5 arranges block plate 9 away from one end of fixing bottom surface 4, described block plate 9 is circular and its external diameter is greater than the external diameter of rotating shaft 5, the central authorities of described block plate 9 arrange button 10, on described shell 1, corresponding button 10 position is provided with through hole 11, described button 10 passes through hole 11 away from one end of block plate 9, and to be exposed to shell 1 outside, Push button 10, described block plate 9 is made to receive inside pressure, be positioned at return spring 8 forced compression in the middle part of rotating shaft 5, rotating disk is made to have inside rectilinear path change.Described roll shaft 6 is the right cylinder that length is equal with rotating shaft 5, the cental axial position of described roll shaft 6 arranges the axis hole 12 running through roll shaft 6, described rotating shaft 5 to be socketed in axis hole 12 and with roll shaft 6 by axis hole 12 clearance fit, described roll shaft 6 is connected with fixing bottom surface 4 axial rotation centered by rotating shaft 5, described roll shaft 6 arranges cavity 13 away from one end of fixing bottom surface 4, described cavity 13 is connected with axis hole 12, the internal diameter of described cavity 13 is greater than the internal diameter of axis hole 12 and corresponding with the external diameter of block plate 9, described cavity 13 arranges internal messing ratchet 14 away from one end of fixing bottom surface 4, the internal diameter of described internal messing ratchet 14 is greater than the internal diameter of cavity 13, the inwall of described internal messing ratchet 14 arranges the tooth 15 of multiple asymmetric circular arc, described block plate 9 is provided with away from the one side of fixing bottom surface 4 ratchet 16 matched with tooth 15, one end and the block plate 9 of described ratchet 16 are hinged, the other end of described ratchet 16 is connected with tension spring 17, described tension spring 17 is connected with block plate 9 away from one end of ratchet 16, because described ratchet 16 can forward slide with the tooth 15 of internal messing ratchet 14, therefore the rotation of described roll shaft 6 is smooth and easy, can easily pull out sight curtain 7.When described sight curtain 7 rollback, because described ratchet 16 can snap in the tooth 15 of internal messing ratchet 14, and described ratchet 16 is under the tractive force restriction of tension spring 17, the internal messing ratchet 14 of backwards rotation is blocked and brakes, make roll shaft 6 cannot backrush, thus stop the backrush of sight curtain 7, avoid its automatic retracted, and determined only under the state stretched.If but Push button 10, the inside indentation of compressing rotating disk, thus the ratchet 16 on rotating disk is departed from tooth 15, remove the braking that internal messing tooth 15 is taken turns, therefore running roller returns backrush rapidly under power pulling function at wind spring 18, sight curtain 7 to be wound on running roller and to regain in shell 1.Wind spring 18 is also provided with between described internal messing ratchet 14 and block plate 9, the two ends of described wind spring 18 are connected with internal messing ratchet 14 and block plate 9 respectively, described internal messing ratchet 14 is connected by wind spring 18 with block plate 9, therefore when sight curtain 7 pulls out, drive outside running roller and put rotation, make wind spring 18 be out of shape and have the pulling force of reverse backrush, thus make sight curtain 7 have the potential energy of automatic rewinding.One end of described sight curtain 7 is fixedly connected with the sidewall of roll shaft 6, described shell 1 is provided with the cylindrical void 19 corresponding with sight curtain 7, described sight curtain 7 to be passed by cylindrical void 19 away from one end of roll shaft 6 and to be exposed to shell 1 outside, one end that described sight curtain 7 is exposed to shell 1 outside arranges the card article 20 that width is greater than cylindrical void 19, described card article 20 arranges designation card, and the content of described designation card is corresponding with the content of sight curtain 7.Described card article 20 is arranged at the outer end of sight curtain 7, sight curtain 7 can be kept off in the outside of shell 1 cylindrical void 19, avoids sight curtain 7 to be difficult to pull-out from the whole retraction shell 1 of cylindrical void 19 and shows.Card article 20 has constant weight simultaneously, also has the sight curtain 7 utilizing the downward stretching expansion of own wt, makes the more complete sufficient effect of the displaying of pattern.Conveniently use, also comprise rotating base 21 and lanyard, the outer wall of described rotating base 21 and the inwall of shell 1 are rotationally connected by rolling bearing, shell 1 can be made to relatively rotate base 21 and rotate and rotate smooth, thus conveniently select the sight curtain 7 of shell 1 week side and show.The two ends of described lanyard are connected with the bottom surface, two ends of rotating base 21.Make use of the present utility model, carry more convenient, and do not hinder the rotation of shell 1.
By cooperatively interacting of above structural relation, make the utility model in use: when needs aided education is shown, select applicable sight curtain 7 and pull it, sight curtain 7 is fully stretched, by required symbol, word, form or patterned display out, the object of historigram teaching can be reached.When show complete need to pack up time, press the button 10 of lower casing 1 outside, sight curtain 7 can automatic rollback.
The special standard of the utility model shows teaching method to historigram, be provided with the spool 2 of multiple band sight curtain 7, each sight curtain 7 all can according to the design of course and needs, by symbol, word, various historical personage figure, cultural relics and historic sites figure, scene graph, map, the teaching material related content air brushing such as age demonstration chart become clear, lively demonstration pattern, significantly sight curtain 7 is utilized to show intuitively to student, build dense sight atmosphere, strengthen and bring sense and space-time sense into, not only effectively motivate students' interest in learning, enliven the human thinking of student, strengthen student to the understanding of the content of courses and memory, sight curtain 7 also by exquisiteness represents the shock effect that history coagulates thick U.S. fully, training student elevated sentiments and attainment.And the utility model is simple and convenient, also have anti-from retraction function, service condition is by the restriction of time, place and teaching condition, and cost is compared the Multi-media teaching tool such as computer, projector and reduced greatly, has the meaning that popularity is tentative.
Claims (5)
1. a historical teaching sight teaching aid, it is characterized in that: comprise shell (1) and spool (2), described shell (1) for xsect be the straight cylinder of annulus, and its inside arranges the cavity (3) of ring cylinder, the bottom surface of described cavity (3) one end is fixing bottom surface (4), described spool (2) is for multiple and be arranged in cavity (3), described spool (2) comprises rotating shaft (5), roll shaft (6) and sight curtain (7), one end of described rotating shaft (5) is connected with fixing bottom surface (4) are vertical, the middle part of described rotating shaft (5) disconnects and gap is connected by return spring (8), described rotating shaft (5) arranges block plate (9) away from the one end of fixing bottom surface (4), described block plate (9) is circular and its external diameter is greater than the external diameter of rotating shaft (5), the central authorities of described block plate (9) arrange button (10), upper corresponding button (10) position of described shell (1) is provided with through hole (11), described button (10) passes through hole (11) away from one end of block plate (9), and to be exposed to shell (1) outside, described roll shaft (6) is the length right cylinder equal with rotating shaft (5), the cental axial position of described roll shaft (6) arranges the axis hole (12) running through roll shaft (6), described rotating shaft (5) to be socketed in axis hole (12) and with roll shaft (6) by axis hole (12) clearance fit, described roll shaft (6) and fixing bottom surface (4) axial rotation centered by rotating shaft (5) is connected, described roll shaft (6) arranges cavity (13) away from the one end of fixing bottom surface (4), described cavity (13) is connected with axis hole (12), the internal diameter of described cavity (13) is greater than the internal diameter of axis hole (12) and corresponding with the external diameter of block plate (9), described cavity (13) arranges internal messing ratchet (14) away from the one end of fixing bottom surface (4), the internal diameter of described internal messing ratchet (14) is greater than the internal diameter of cavity (13), the inwall of described internal messing ratchet (14) arranges the tooth (15) of multiple asymmetric circular arc, described block plate (9) is provided with away from the one side of fixing bottom surface (4) ratchet (16) matched with tooth (15), one end and the block plate (9) of described ratchet (16) are hinged, the other end of described ratchet (16) is connected with tension spring (17), described tension spring (17) is connected with block plate (9) away from one end of ratchet (16), wind spring (18) is also provided with between described internal messing ratchet (14) and block plate (9), the two ends of described wind spring (18) are connected with internal messing ratchet (14) and block plate (9) respectively, one end of described sight curtain (7) is fixedly connected with the sidewall of roll shaft (6), described shell (1) is provided with the cylindrical void (19) corresponding with sight curtain (7), described sight curtain (7) to be passed by cylindrical void (19) away from one end of roll shaft (6) and to be exposed to shell (1) outside, described sight curtain (7) is exposed to the outside one end of shell (1) and arranges the card article (20) that width is greater than cylindrical void (19).
2. a kind of historical teaching sight teaching aid according to claim 1, it is characterized in that: also comprise rotating base (21), the outer wall of described rotating base (21) and the inwall of shell (1) are rotationally connected by rolling bearing.
3. a kind of historical teaching sight teaching aid according to claim 2, it is characterized in that: also comprise lanyard, the two ends of described lanyard are connected with the bottom surface, two ends of rotating base (21).
4. a kind of historical teaching sight teaching aid according to claim 1, is characterized in that: described spool (2) is along the even circumferential distribution of fixing bottom surface (4).
5. a kind of historical teaching sight teaching aid according to claim 1, it is characterized in that: (20) arrange designation card to described card article, the content of described designation card is corresponding with the content of sight curtain (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264535.XU CN204557813U (en) | 2015-04-28 | 2015-04-28 | A kind of historical teaching sight teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520264535.XU CN204557813U (en) | 2015-04-28 | 2015-04-28 | A kind of historical teaching sight teaching aid |
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| Publication Number | Publication Date |
|---|---|
| CN204557813U true CN204557813U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520264535.XU Expired - Fee Related CN204557813U (en) | 2015-04-28 | 2015-04-28 | A kind of historical teaching sight teaching aid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468851A (en) * | 2015-11-09 | 2017-03-01 | 程保星 | Multiaxis curtain |
| CN106468850A (en) * | 2015-11-09 | 2017-03-01 | 程保星 | Curtain |
| CN109171329A (en) * | 2018-10-23 | 2019-01-11 | 国家电网有限公司 | Vertical core achive keeping frame |
| CN113205726A (en) * | 2021-04-07 | 2021-08-03 | 朱珊珊 | Teaching system for tour teaching classroom auxiliary teaching process |
-
2015
- 2015-04-28 CN CN201520264535.XU patent/CN204557813U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468851A (en) * | 2015-11-09 | 2017-03-01 | 程保星 | Multiaxis curtain |
| CN106468850A (en) * | 2015-11-09 | 2017-03-01 | 程保星 | Curtain |
| CN109171329A (en) * | 2018-10-23 | 2019-01-11 | 国家电网有限公司 | Vertical core achive keeping frame |
| CN113205726A (en) * | 2021-04-07 | 2021-08-03 | 朱珊珊 | Teaching system for tour teaching classroom auxiliary teaching process |
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Granted publication date: 20150812 Termination date: 20160428 |