CN201833762U - Teaching compasses - Google Patents
Teaching compasses Download PDFInfo
- Publication number
- CN201833762U CN201833762U CN2010205570865U CN201020557086U CN201833762U CN 201833762 U CN201833762 U CN 201833762U CN 2010205570865 U CN2010205570865 U CN 2010205570865U CN 201020557086 U CN201020557086 U CN 201020557086U CN 201833762 U CN201833762 U CN 201833762U
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- CN
- China
- Prior art keywords
- fixed leg
- compasses
- utility
- model
- moving slider
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model belongs to the improvement of the structure of compasses used in teaching. The utility model provides teaching compasses which have simple structure and are convenient to use. The teaching compasses comprise a fixed leg and have the structural key points that a magnet is arranged at the lower part of the fixed leg; a suction cup is arranged at the bottom of the fixed leg; a moving slide block is arranged on a compass arm connected with the middle part of the fixed leg; a fastening knob is arranged at the upper part of the moving slide block; a clamping hole used for clamping a chalk is arranged at the lower part of the moving slide block; and scales are arranged on the surface of the compass arm.
Description
Technical field
The utility model is to belong to operation, the essential part of transportation, write or drawing appliance, the big class of office appliance, write or drawing article, the assistant product group of writing or draw, circular curve plotter or analogous instrument technical group field more particularly relate to a kind of educational compasses.
Background technology
Compasses are to be used for the instrument of draw circles or string in mathematics and drawing, are usually used in construction with ruler and compasses.
In teaching process, the teacher usually will make and present blackboard is commonly materials such as glass at the blackboard upper drawing circle, surperficial smoother, and general compasses for teaching is difficult to be fixed on the blackboard, uses the comparison difficulty.
Summary of the invention
The utility model is exactly at the problems referred to above, and a kind of educational compasses simple in structure, easy to use is provided.
In order to realize above-mentioned purpose of the present utility model, the utility model adopts following technical scheme, and the utility model comprises fixed leg, and its structural feature is that the fixed leg bottom is provided with magnet, and the fixed leg bottom is provided with sucker; The compasses arm that is connected with the fixed leg middle part is provided with moving slider, and moving slider top is provided with tightening knob, and the moving slider bottom is the holes for clamping that is used for the clamping chalk, and compasses arm surface is provided with scale.
The beneficial effects of the utility model:
(1) member is few, simple in structure
The utility model is made up of fixed leg and the compasses arm that is fixed on the fixed leg, and the member of use is few, and is therefore simple in structure, is easy to make and promote.
(2) easy to use
The utility model can be fixed on the blackboard surface by the sucker of fixed leg bottom, and the magnet of fixed leg bottom can be strengthened the adsorption effect on the metal material blackboard; Compasses arm surface is provided with scale, can adjust the position of moving slider according to scale, after the tightening knob that uses moving slider top fixes moving slider, just can make the drawing with coloured chalk that is arranged in the holes for clamping go out the circle that the user needs by rotation compasses arm; When not using, can easily sucker be taken off from blackboard.With respect to the same domain product, very easy to use.
Description of drawings
Fig. 1 is the utility model structural representation.
In the accompanying drawing, 1 is the compasses arm, and 2 is scale, and 3 is chalk, and 4 is holes for clamping, and 5 is tightening knob, and 6 is moving slider, and 7 is sucker, and 8 is magnet, and 9 is fixed leg.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The utility model comprises fixed leg 9, and fixed leg 9 bottoms are provided with magnet 8, and fixed leg 9 bottoms are provided with sucker 7; The compasses arm 1 that is connected with fixed leg 9 middle parts is provided with moving slider 6, and moving slider 6 tops are provided with tightening knob 5, and moving slider 6 bottoms are the holes for clamping 4 that is used for clamping chalk 3, and compasses arm 1 surface is provided with scale 2.
The magnet 8 of fixed leg 9 bottoms can be strengthened the adsorption effect on the metal material blackboard.
Below in conjunction with description of drawings use of the present utility model:
Draw bowlder, at first the sucker 7 of the utility model by fixed leg 9 bottoms is fixed on the blackboard surface, make fixed leg 9 aim at the center of circle of the circle that needs picture, scale 2 according to compasses arm 1 surface is adjusted the position that is arranged on the moving slider 6 on the compasses arm 1, after the tightening knob 5 that uses moving slider 6 tops fixes moving slider 6, just can make the draw circle of user's needs of the chalks 3 that are arranged in the holes for clamping 4 by rotation compasses arm 1.
After use finishing, sucker 7 taken off from the blackboard surface get final product.
Be with being appreciated that, more than about specific descriptions of the present utility model, only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as satisfy, all within protection domain of the present utility model.
Claims (1)
1. educational compasses comprises fixed leg (9), it is characterized in that fixed leg (9) bottom is provided with magnet (8), and fixed leg (9) bottom is provided with sucker (7); The compasses arm (1) that is connected with fixed leg (9) middle part is provided with moving slider (6), moving slider (6) top is provided with tightening knob (5), moving slider (6) bottom is for being used for the holes for clamping (4) of clamping chalk (3), and compasses arm (1) surface is provided with scale (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205570865U CN201833762U (en) | 2010-10-12 | 2010-10-12 | Teaching compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205570865U CN201833762U (en) | 2010-10-12 | 2010-10-12 | Teaching compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201833762U true CN201833762U (en) | 2011-05-18 |
Family
ID=44003859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205570865U Expired - Fee Related CN201833762U (en) | 2010-10-12 | 2010-10-12 | Teaching compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201833762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407717A (en) * | 2011-12-05 | 2012-04-11 | 陈道伟 | Compasses with magnetic legs |
-
2010
- 2010-10-12 CN CN2010205570865U patent/CN201833762U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407717A (en) * | 2011-12-05 | 2012-04-11 | 陈道伟 | Compasses with magnetic legs |
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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: 20110518 Termination date: 20111012 |