CN204667693U - A kind of shifting decimal point display - Google Patents
A kind of shifting decimal point display Download PDFInfo
- Publication number
- CN204667693U CN204667693U CN201520388512.XU CN201520388512U CN204667693U CN 204667693 U CN204667693 U CN 204667693U CN 201520388512 U CN201520388512 U CN 201520388512U CN 204667693 U CN204667693 U CN 204667693U
- Authority
- CN
- China
- Prior art keywords
- ball
- fixed frame
- numerical digit
- digit part
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The utility model discloses a kind of shifting decimal point display, comprise fixed frame, numerical portion, numerical digit part and radix point is established in described fixed frame, the utility model adopts press insert type location collision bead principle, numeral is fixed on ball, radix point sum digit part adopts manual slide displacement, the rule that the utility model causes decimal to change after open-and-shutly can demonstrating shifting decimal point, make student visual and understandable, improve the quality of teaching, reach teaching purpose, the utility model cost of manufacture is low, and simple to operate being easy to is promoted.
Description
Technical field
The utility model relates to primary school math teaching articles for use field, and especially a kind of functional decimal point displacement of teaching students causes the shifting decimal point display of the rule of decimal size variation.
Background technology
On mathematics class, teacher needs to teach the rule that student's functional decimal point displacement causes decimal size variation, at present, the teaching method generally taked is by chalk-writing numeral on blackboard, chalk is got ready, the method of oral account is taught to student, this method student open-and-shutly can not see shifting process and the rule of radix point clearly, not only teacher is wasted time and energy, and the efficiency that student accepts is low, also some advanced radix point teaching aids are had to occur in recent years, as the shifting decimal point display of electronical display and the shifting decimal point display of plug-in card sheet, effectively solve traditional difficulties in teaching, but above two kinds of shifting decimal point displays also have following defect: the shifting decimal point display operation of electronical display is complicated and easily break down, cost of manufacture is high, when the shifting decimal point display of plug-in card sheet changes numeral, more loaded down with trivial details and card is easily lost.
Utility model content
For the problems referred to above, the utility model aims to provide a kind of shifting decimal point display, the utility model adopts press insert type location collision bead principle, numeral be fixed on ball, radix point sum digit part adopts manual slide displacement, the rule that the utility model causes decimal to change after open-and-shutly can demonstrating shifting decimal point, make student visual and understandable, improve the quality of teaching, cost of manufacture is low, simple to operate.
For realizing this technical purpose, scheme of the present utility model is: a kind of shifting decimal point display, comprise fixed frame, numerical portion is established in described fixed frame, numerical digit part and radix point, described numerical portion is made up of the central shaft be fixed on fixed frame and ball, described ball is 11 column structures, 0-9 ten numerals and a blank face are distributed on 11 faces of ball respectively in order, ball is established a cylindrical hole, the collision bead groove corresponding with 11 of ball faces is established in cylindrical hole, described central shaft is established the collision bead spring assembly corresponding with collision bead groove on ball quantity and ball, central shaft is through the cylindrical hole on ball, collision bead spring assembly on central shaft is fixed with the collision bead groove fit on corresponding ball, described radix point is fixed on the below of numerical digit part, multiple slide post is established at numerical digit partial rear, the slide post of numerical digit part is placed in the slideway on the slip fixed head that is fixed on fixed frame, sliding handle is established at described numerical digit part two ends, when the fixed frame corresponding with numerical digit part open numerical digit part and radix point left and right displacement by sliding tray, fixed frame establishes hide on ball need not the lower baffle plate of numeral.
The utility model compared with the existing technology has the following advantages:
One, the ball of numerical portion of the present utility model adopts press insert type location collision bead principle and central shaft to fix, and structure is simple, easy to operate.
Two, fixed frame of the present utility model establishes sliding tray, sliding handle is established at numerical digit part two ends, mobile sliding handle, and numerical digit part and radix point can left and right displacement by sliding tray, the rule causing decimal to change after open-and-shutly can demonstrating shifting decimal point.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is rear view of the present utility model.
Fig. 3 is the structural representation of the utility model ball.
In figure: fixed frame 1, numerical digit part 2, radix point 3, central shaft 4, ball 5, slide post 6, slip fixed head 7, slideway 8, sliding handle 9, sliding tray 10, lower baffle plate 11.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in drawings, a kind of shifting decimal point display of the utility model embodiment, comprise fixed frame 1, numerical portion is established in described fixed frame 1, numerical digit part 2 and radix point 3, described numerical portion is made up of the central shaft 4 be fixed on fixed frame 1 and ball 5, described ball 5 is in 11 column structures, 0-9 ten numerals and a blank face are distributed on 11 faces of ball 5 respectively in order, ball 5 is established a cylindrical hole, the collision bead groove corresponding with 11 of ball 5 faces is established in cylindrical hole, described central shaft 4 is established the collision bead spring assembly corresponding with collision bead groove in ball 5 quantity and ball 5, central shaft 4 is through the cylindrical hole on ball 5, collision bead spring assembly on central shaft 4 is fixed with the collision bead groove fit on corresponding ball 5, described radix point 3 is fixed on the below of numerical digit part 2, multiple slide post 6 is established at numerical digit part 2 back side, the slide post 6 of numerical digit part 2 is placed in the slideway 8 on the slip fixed head 7 that is fixed on fixed frame 1, sliding handle 9 is established at described numerical digit part 2 two ends, when the fixed frame 1 corresponding with numerical digit part 2 open numerical digit part 2 and radix point 3 left and right displacement by sliding tray 10, fixed frame 1 establishes hide on ball 5 need not the lower baffle plate 11 of numeral.
During use, to fix from hand rotation adjustment after the utility model according to teaching request and each ball 5 will show numeral, the blank face that all balls 5 before most significant position are all adjusted on ball 5 represents, adjust the part 2 of numerical digit and the position of radix point 3 by sliding handle 9 simultaneously, according to radix point 3 displacement request, to be slided the part 2 of numerical digit and radix point 3 by sliding handle 9, demonstrate the rule causing decimal to change after radix point 3 moves, reach teaching purpose.
The above; be only preferred embodiment of the present utility model; not in order to limit the utility model, every above embodiment is done according to technical spirit of the present utility model any trickle amendment, equivalently replace and improve, within the protection domain that all should be included in technical solutions of the utility model.
Claims (1)
1. a shifting decimal point display, comprise fixed frame (1), it is characterized in that, described fixed frame establishes numerical portion in (1), numerical digit part (2) and radix point (3), described numerical portion is made up of the central shaft (4) be fixed on fixed frame (1) and ball (5), described ball (5) is in 11 column structures, 0-9 ten numerals and a blank face are distributed on 11 faces of ball (5) respectively in order, (5) establish a cylindrical hole to ball, the collision bead groove corresponding with 11 faces of ball (5) is established in cylindrical hole, described central shaft (4) is established the collision bead spring assembly corresponding with ball (5) quantity and the upper collision bead groove of ball (5), central shaft (4) is through the cylindrical hole on ball (5), collision bead spring assembly on central shaft (4) is fixed with the collision bead groove fit on corresponding ball (5), described radix point (3) is fixed on the below of numerical digit part (2), multiple slide post (6) is established at numerical digit part (2) back side, the slide post (6) of numerical digit part (2) is placed in the slideway (8) on the slip fixed head (7) that is fixed on fixed frame (1), sliding handle (9) is established at described numerical digit part (2) two ends, when the fixed frame (1) corresponding with numerical digit part (2) open numerical digit part (2) and radix point (3) left and right displacement by sliding tray (10), fixed frame (1) establishes hide on ball (5) need not the lower baffle plate (11) of numeral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388512.XU CN204667693U (en) | 2015-06-02 | 2015-06-02 | A kind of shifting decimal point display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520388512.XU CN204667693U (en) | 2015-06-02 | 2015-06-02 | A kind of shifting decimal point display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204667693U true CN204667693U (en) | 2015-09-23 |
Family
ID=54138053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520388512.XU Expired - Fee Related CN204667693U (en) | 2015-06-02 | 2015-06-02 | A kind of shifting decimal point display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204667693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459101A (en) * | 2019-07-19 | 2019-11-15 | 张欢 | A kind of Abacus for children primary learning instructs equipment |
-
2015
- 2015-06-02 CN CN201520388512.XU patent/CN204667693U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459101A (en) * | 2019-07-19 | 2019-11-15 | 张欢 | A kind of Abacus for children primary learning instructs equipment |
| CN110459101B (en) * | 2019-07-19 | 2021-08-27 | 湖南湘军教育科技发展有限公司 | Infant abacus preliminary learning guiding equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203588494U (en) | Demonstration device used for history teaching | |
| CN204667693U (en) | A kind of shifting decimal point display | |
| CN205177221U (en) | Chinese teaching aid | |
| CN208232659U (en) | A kind of teaching aid of mathematical education drafting function curve | |
| CN203165285U (en) | English word learning board | |
| CN204160950U (en) | A kind of Multi-functional English teaching board | |
| CN211207670U (en) | Two-digit addition teaching device for primary school mathematical teaching | |
| CN202641191U (en) | Teaching tablet with placing table and auto-cleaning function | |
| CN204117372U (en) | Russian vocabulary teaching apparatus | |
| CN204010410U (en) | A kind of teaching apparatus for mathematics | |
| CN204506255U (en) | A kind of math teacher multifunctional drawing tool | |
| CN202976578U (en) | Display device for classroom teaching of ideological political theory course in universities | |
| CN201594324U (en) | Mathematics teaching appliance for primary schools | |
| CN202584495U (en) | Demonstration plate for teaching mathematical addition and subtraction in school for deaf-mutes | |
| CN205016108U (en) | Multi -functional english teaching materials | |
| CN202650287U (en) | Teaching writing tablet with placing table and projection device | |
| CN204375280U (en) | The describer of power | |
| CN202159446U (en) | Teaching aid for teaching Chinese in primary schools | |
| CN203825883U (en) | Showing shelf especially used for mathematics | |
| CN209265759U (en) | A kind of educational aid for foreign trade document | |
| CN201570147U (en) | English word teaching demonstrator | |
| CN207337719U (en) | A kind of new education demonstration board | |
| CN204423710U (en) | A kind of ancient poetry culture and education appurtenance | |
| CN206021669U (en) | Primary school math teaching exhibiting device | |
| CN203102666U (en) | Chinese teaching apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180602 |