CN204820795U - University is compasses for mathematical education - Google Patents
University is compasses for mathematical education Download PDFInfo
- Publication number
- CN204820795U CN204820795U CN201520519705.4U CN201520519705U CN204820795U CN 204820795 U CN204820795 U CN 204820795U CN 201520519705 U CN201520519705 U CN 201520519705U CN 204820795 U CN204820795 U CN 204820795U
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- CN
- China
- Prior art keywords
- bearing
- winding wheel
- rotating shaft
- conduit
- compasses
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- Expired - Fee Related
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- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
Abstract
The utility model provides an university is compasses for mathematical education, belongs to the educational aid field, has solved present university is compasses for mathematical education and has had the great problem of volume, and it contains a pivot, is provided with a winding wheel in the outside of pivot, and the line wheel is connected along circumferential direction with the pivot through bearing A, overlapping respectively at winding wheel's both ends and being equipped with a bearing B, two bearing B's inner circle and winding wheel fixed connection are provided with a conduit between two bearing B's the outer lane, are provided with a baffle respectively in one side far away mutually of two bearing B, are provided with the jackscrew on a baffle wherein, are provided with a dive flap in the one end that lies in between the bearing B of baffle and homonymy of jackscrew, are provided with the slipmat on the dive flap, winding wheel is connected with the one end of a rope, and the other end of rope is worn out by the conduit and is connected with a clamp device, be provided with a through -hole in the centre of a circle position of pivot, the utility model is used for draw great circle in the mathematical education.
Description
Technical field
The utility model belongs to educational aid field, is specifically related to a kind of College Mathematics Teaching compasses.
Background technology
There is the larger problem of volume in current College Mathematics Teaching compasses, inconvenience when carrying, and it is larger to take up room when depositing.
Summary of the invention
The purpose of this utility model there is the larger problem of volume to solve current College Mathematics Teaching compasses, and provide a kind of College Mathematics Teaching compasses, its technical scheme is as follows:
A kind of College Mathematics Teaching compasses, it comprises a rotating shaft, has a winding wheel in the arranged outside of rotating shaft, and the length of winding wheel is less than the length of rotating shaft, and winding wheel aligns with spindle central and arranges, and line wheel is circumferentially rotationally connected by bearing A and rotating shaft; Be respectively installed with a bearing B at the two ends of winding wheel, the inner ring of two bearing B is fixedly connected with winding wheel, and be provided with a conduit between the outer ring of two bearing B, conduit is consistent with the diametric(al) of bearing B, and conduit is fixedly connected with the outer ring of bearing B; One piece of baffle plate is respectively arranged with in the side far away mutually of two bearing B, baffle plate is fixedly connected with winding wheel, one piece of baffle plate is wherein provided with jackscrew, one end between baffle plate and the bearing B of homonymy of jackscrew is provided with one piece of keep plate, keep plate is provided with slipmat, when screwing jackscrew, keep plate can make bearing B rotate; Winding wheel is connected with one end of a rope, the other end of rope is passed by conduit and is connected with pen clip device, pen clip device adopts the device of the convenient fixing chalks such as a flexible rubber ring or white board marker, the length of rope is at 60 to nine ten centimetres, rope is wrapped on winding wheel, after during use, pull-out is applicable to the rope of length, with jackscrew rigid bearing B, at pen clip device inner clip one-pen, just circle can be drawn around rotating shaft; The home position of rotating shaft is provided with a through hole, facilitates positioning centre.
The beneficial effects of the utility model are: compared with existing compasses for teaching, the compasses volume that the utility model provides is minimum, the rope of 60 to nine ten centimetres, can be very thin under the condition of the pulling force when satisfied use, so the compasses diameter that the utility model provides can below three centimetres, thickness can, below one centimetre, carry very convenient, and it is minimum to take up room when depositing.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is exploded view of the present utility model.
detailed description of the invention:
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of College Mathematics Teaching compasses, it comprises a rotating shaft 1, a winding wheel 2 is had in the arranged outside of rotating shaft 1, the length of winding wheel 2 is less than the length of rotating shaft 1, winding wheel 2 aligns with rotating shaft 1 center and arranges, and line wheel is circumferentially rotationally connected by bearing A3-1 and rotating shaft 1; A bearing B3-2 is respectively installed with at the two ends of winding wheel 2, the inner ring of two bearing B3-2 is fixedly connected with winding wheel 2, be provided with a conduit 4 between the outer ring of two bearing B3-2, conduit 4 is consistent with the diametric(al) of bearing B3-2, and conduit 4 is fixedly connected with the outer ring of bearing B3-2; One piece of baffle plate 5 is respectively arranged with in the side far away mutually of two bearing B3-2, baffle plate 5 is fixedly connected with winding wheel 2, one piece of baffle plate 5 is wherein provided with jackscrew 6, one end between baffle plate 5 and the bearing B3-2 of homonymy of jackscrew 6 is provided with one piece of keep plate 6-1, keep plate 6-1 is provided with slipmat 6-2, when screwing jackscrew 6, keep plate 6-1 can make bearing B3-2 rotate; Winding wheel 2 is connected with one end of a rope 7, the other end of rope 7 is passed by conduit 4 and is connected with pen clip device 8, pen clip device 8 adopts the device of the convenient fixing chalks such as a flexible rubber ring or white board marker, the length of rope 7 is at 60 to nine ten centimetres, rope 7 is wrapped on winding wheel 2, after during use, pull-out is applicable to the rope 7 of length, with jackscrew 6 rigid bearing B3-2, at pen clip device 8 inner clip one-pen, just circle can be drawn around rotating shaft 1; The home position of rotating shaft 1 is provided with a through hole 1-1, facilitates positioning centre.
Claims (3)
1. College Mathematics Teaching compasses, it is characterized in that it comprises a rotating shaft (1), a winding wheel (2) is had in the arranged outside of rotating shaft (1), the length of winding wheel (2) is less than the length of rotating shaft (1), winding wheel (2) aligns with rotating shaft (1) center and arranges, and line wheel is circumferentially rotationally connected with rotating shaft (1) by bearing A (3-1); A bearing B (3-2) is respectively installed with at the two ends of winding wheel (2), the inner ring of two bearing B (3-2) is fixedly connected with winding wheel (2), a conduit (4) is provided with between the outer ring of two bearing B (3-2), conduit (4) is consistent with the diametric(al) of bearing B (3-2), and conduit (4) is fixedly connected with the outer ring of bearing B (3-2); One piece of baffle plate (5) is respectively arranged with in the side far away mutually of two bearing B (3-2), baffle plate (5) is fixedly connected with winding wheel (2), one piece of baffle plate (5) is wherein provided with jackscrew (6), one end between the bearing B (3-2) being positioned at baffle plate (5) and homonymy of jackscrew (6) is provided with one piece of keep plate (6-1), and keep plate (6-1) is provided with slipmat (6-2); Winding wheel (2) is connected with one end of a rope (7), and the other end of rope (7) is passed by conduit (4) and is connected with pen clip device (8).
2. a kind of College Mathematics Teaching compasses as claimed in claim 1, is characterized in that pen clip device (8) adopts a flexible rubber ring.
3., as a kind of College Mathematics Teaching compasses as claimed in claim 1, it is characterized in that the home position of rotating shaft (1) is provided with a through hole (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519705.4U CN204820795U (en) | 2015-07-17 | 2015-07-17 | University is compasses for mathematical education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520519705.4U CN204820795U (en) | 2015-07-17 | 2015-07-17 | University is compasses for mathematical education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204820795U true CN204820795U (en) | 2015-12-02 |
Family
ID=54678429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520519705.4U Expired - Fee Related CN204820795U (en) | 2015-07-17 | 2015-07-17 | University is compasses for mathematical education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204820795U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177467A (en) * | 2017-12-29 | 2018-06-19 | 陕西科技大学 | A kind of special ruler of teaching |
-
2015
- 2015-07-17 CN CN201520519705.4U patent/CN204820795U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108177467A (en) * | 2017-12-29 | 2018-06-19 | 陕西科技大学 | A kind of special ruler of teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cong Ruixue Inventor after: Liu Hong Inventor before: Cong Ruixue Inventor before: Liu Hong |
|
| COR | Change of bibliographic data | ||
| 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: 20151202 Termination date: 20160717 |