CN201989510U - Adjustable mathematic compasses - Google Patents
Adjustable mathematic compasses Download PDFInfo
- Publication number
- CN201989510U CN201989510U CN2011200085800U CN201120008580U CN201989510U CN 201989510 U CN201989510 U CN 201989510U CN 2011200085800 U CN2011200085800 U CN 2011200085800U CN 201120008580 U CN201120008580 U CN 201120008580U CN 201989510 U CN201989510 U CN 201989510U
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- China
- Prior art keywords
- hole
- rotating part
- plotter
- sucker
- fixed part
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- Expired - Fee Related
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Abstract
Adjustable mathematic compasses comprise a fixed part, a rotating part and a drawing rod. The fixed part comprises a sucker and a turn table, one end of the turn table is fixedly connected with the sucker while the other end of the turn table is rotationally matched with the rotating part, and the other end of the rotating part is in sliding fit with the drawing rod. The drawing rod is provided with at least one drawing hole matched with at least one drawing device, the drawing holes are arranged equidistantly along the drawing rod, the other end of the rotating part is provided with a positioning hole, and a positioning lock block matched with the drawing holes is arranged in the positioning hole. Each drawing device comprises a drawing head and a connecting rod, wherein one end of the connecting rod is fixedly connected with the drawing head while the other end of the connecting rod is in threaded fit with each drawing hole. The adjustable mathematic compasses are higher in adjustability, higher in drawing efficiency and lower in service cost.
Description
Technical field
The utility model relates to a kind of mathematics compasses, relates in particular to a kind of adjustable type mathematics compasses, specifically is applicable to the drafting of a plurality of circles of different radii.
Background technology
Compasses are indispensable teaching aids in the mathematical education, but the constant radius of at present used compasses, and the size of each circle of drawing is fixed, and can't draw the circle of different radii as required, also can't draw concentric a plurality of circles.
The Chinese patent Granted publication number is CN201544649U, Granted publication day is that the utility model patent on August 11st, 2010 discloses a kind of firm formula compasses for teaching, belong to International Patent Classification (IPC) (IPC) division and belong to operation Department of Transportation, printing branch is write or drawing appliance; The big class of office appliance is write or drawing article; The assistant product group of writing or draw, circular curve plotter or analogous instrument technical group field, its structure comprises supporting leg, chalk sleeve, chalk, described leg ends place is fixed on the sucker by multi-directional ball, vertical fixing has ruler on supporting leg, and chalk sleeve is connected on the ruler by rectangle slide opening slip cap.Though characteristics such as it is reasonable in design, simple in structure, easy to use that this utility model has also can be adjusted radius of a circle, it once still can only draw a circle, can't draw a plurality of concentric circles simultaneously, and drafting efficient is lower.
Summary of the invention
The purpose of this utility model is to overcome lower defective and the problem of drafting efficient that exists in the prior art, and a kind of higher adjustable type mathematics compasses of efficient of drawing are provided.
For realizing above purpose, technical solution of the present utility model is: a kind of adjustable type mathematics compasses, comprise fixed part, rotating part and drawing bar, one end of described rotating part is connected with fixed part, the other end matches with the drawing bar, and the drawing bar is provided with plotter, and fixed part is provided with sucker; Described fixed part comprises sucker and turntable, one end of turntable is fixedlyed connected with sucker, the other end cooperates with the rotating part rotation, the other end of rotating part and drawing bar are slidingly matched, the drawing bar is provided with at least one drawing hole of matching with plotter, the drawing hole equidistantly is provided with along the drawing bar, and the quantity of plotter is at least one.
The quantity in described drawing hole is 16, and the distance between the adjacent drawing hole is three centimetres.
The other end of described rotating part is provided with locating hole, is provided with the positioning wedged block that matches with the hole of drawing in the locating hole.
Described plotter comprises plotting head and connecting rod, and an end of connecting rod is fixedlyed connected with plotting head, the other end and drawing hole threaded engagement.
Compared with prior art, the beneficial effects of the utility model are:
1, because the fixed part in a kind of adjustable type mathematics of the utility model compasses comprises sucker and turntable, one end of turntable is fixedlyed connected with sucker, the other end cooperates with the rotating part rotation, the other end of rotating part and drawing bar are slidingly matched, the drawing bar is provided with at least one drawing hole of matching with plotter, the drawing hole equidistantly is provided with along the drawing bar, and the quantity of plotter is at least one, the other end of rotating part is provided with locating hole, be provided with the positioning wedged block that matches with the hole of drawing in the locating hole, during use, both can be under the situation of not mobile drawing bar, choose the drawing hole according to the radius of a circle that needs to draw, in the drawing hole, plotter is housed then, also can under the situation of mobile plotter not, moves horizontally the drawing bar, moving the back fixes it by positioning wedged block, realize the adjustment of radius of a circle, simultaneously, a plurality of plotters can be housed simultaneously on the drawing bar, thereby realize the drafting of a plurality of concentrically ringed collectives, improved drafting efficient greatly.Therefore it is higher that the utility model is not only drawn efficient, and adjustable is stronger.
2, owing to plotter in a kind of adjustable type mathematics of the utility model compasses comprises plotting head and connecting rod; one end of connecting rod is fixedlyed connected with plotting head; the other end and drawing hole threaded engagement; during use; because plotting head is generally chalk; it can shorten along with use; can cause the difficulty of drafting; this moment can be by adjusting the length of connecting rod and drawing hole threaded engagement; thereby adjust the relative extension elongation of plotting head, at this moment, even chalk is consumed; still can normally draw, save use cost.Therefore not only adjustable is stronger for the utility model, and use cost is lower.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: fixed part 1, rotating part 2, locating hole 21, drawing bar 3, drawing hole 31, plotter 4, plotting head 41, connecting rod 42, sucker 5, turntable 6, positioning wedged block 7.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail
Referring to Fig. 1, a kind of adjustable type mathematics compasses comprise fixed part 1, rotating part 2 and drawing bar 3, one end of described rotating part 2 is connected with fixed part 1, the other end matches with drawing bar 3, and drawing bar 3 is provided with plotter 4, and fixed part 1 is provided with sucker 5; One of special feature of the present utility model is: fixed part 1 comprises sucker 5 and turntable 6, one end of turntable 6 is fixedlyed connected with sucker 5, the other end cooperates with rotating part 2 rotations, the other end of rotating part 2 and drawing bar 3 are slidingly matched, drawing bar 3 is provided with at least one drawing hole 31 of matching with plotter 4, drawing hole 31 equidistantly is provided with along drawing bar 3, and the quantity of plotter 4 is at least one.The other end of preferred rotating part 2 is provided with locating hole 21, is provided with the positioning wedged block 7 that matches with the hole 31 of drawing in the locating hole 21.This design in use, both can be under the situation of not mobile drawing bar 3, choose drawing hole 31 according to the radius of a circle that needs to draw, then in the drawing hole 31 li plotter 4 is housed, also can be under the situation of not mobile plotter 4, move horizontally drawing bar 3, move the back and it is fixed, realize the adjustment of radius of a circle by positioning wedged block 7, simultaneously, a plurality of plotters 4 can be housed on drawing bar 3 simultaneously, thereby realize the drafting of a plurality of concentrically ringed collectives, improve drafting efficient greatly.
The quantity in preferred drawing hole 31 is 16, and the distance between the adjacent drawing hole 31 is three centimetres.This design has enlarged the drafting scope.
Preferred plotter 4 comprises plotting head 41 and connecting rod 42, and an end of connecting rod 42 is fixedlyed connected with plotting head 41, the other end and drawing hole 31 threaded engagement.This design can be adjusted the relative extension elongation of plotting head 41, saves use cost.
Therefore not only adjustable is strong for the utility model, drafting efficient is higher, and use cost is lower.
The above only is a better embodiment of the present utility model; protection domain of the present utility model does not exceed with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. adjustable type mathematics compasses, comprise fixed part (1), rotating part (2) and drawing bar (3), one end of described rotating part (2) is connected with fixed part (1), the other end matches with drawing bar (3), and drawing bar (3) is provided with plotter (4), fixed part (1) is provided with sucker (5), it is characterized in that: described fixed part (1) comprises sucker (5) and turntable (6), one end of turntable (6) is fixedlyed connected with sucker (5), the other end cooperates with rotating part (2) rotation, the other end of rotating part (2) and drawing bar (3) are slidingly matched, drawing bar (3) is provided with at least one drawing hole (31) of matching with plotter (4), drawing hole (31) is provided with along drawing bar (3) is equidistant, and the quantity of plotter (4) is at least one.
2. a kind of adjustable type mathematics compasses according to claim 1, it is characterized in that: the quantity in described drawing hole (31) is 16, and the distance between the adjacent drawing hole (31) is three centimetres.
3. a kind of adjustable type mathematics compasses according to claim 1, it is characterized in that: the other end of described rotating part (2) is provided with locating hole (21), is provided with the positioning wedged block (7) that matches with the hole of drawing (31) in the locating hole (21).
4. a kind of adjustable type mathematics compasses according to claim 1, it is characterized in that: described plotter (4) comprises plotting head (41) and connecting rod (42), one end of connecting rod (42) is fixedlyed connected with plotting head (41), the other end and drawing hole (31) threaded engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200085800U CN201989510U (en) | 2011-01-04 | 2011-01-04 | Adjustable mathematic compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200085800U CN201989510U (en) | 2011-01-04 | 2011-01-04 | Adjustable mathematic compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989510U true CN201989510U (en) | 2011-09-28 |
Family
ID=44666009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200085800U Expired - Fee Related CN201989510U (en) | 2011-01-04 | 2011-01-04 | Adjustable mathematic compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989510U (en) |
-
2011
- 2011-01-04 CN CN2011200085800U patent/CN201989510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120104 |