CN205255838U - Metal is compasses chi for blackboard - Google Patents
Metal is compasses chi for blackboard Download PDFInfo
- Publication number
- CN205255838U CN205255838U CN201520823889.3U CN201520823889U CN205255838U CN 205255838 U CN205255838 U CN 205255838U CN 201520823889 U CN201520823889 U CN 201520823889U CN 205255838 U CN205255838 U CN 205255838U
- Authority
- CN
- China
- Prior art keywords
- main scale
- compasses
- spout
- chalk
- blackboard
- 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
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a metal is compasses chi for blackboard, belongs to teaching aid technical field. It includes the main scale, the main scale tip on be equipped with location nail, the main scale can rotate around location nail, location nailed joint magnetic receiver, main scale chi face on be equipped with the spout, the spout in be equipped with the chalk seat, the chalk seat through the fixation nut locking that sets up in the spout. The beneficial effects of the utility model are that: collection ruler and two kinds of drawing functions on the compasses are as an organic whole, set up the magnetic receiver, conveniently fix on the metal blackboard, convenient mapping, set up the chalk seat, can fix a position the chalk, guarantee the drawing effect, set up the spout, the circle of the different diameters that conveniently draw up. This compasses chi is with low costs, easily carries, and convenient to use is fit for classroom teaching and uses.
Description
Technical field
The utility model belongs to teaching aid technical field, is specifically related to a kind of metallic blackboard compasses combined with ruler.
Background technology
Ruler is used for drawing straight line, and compasses are used for drawing circular, and both cannot substitute. When teachers' instruction, need use ruler and compasses simultaneously, carry inconvenience, when the upper drawing circle of classroom, must first on ruler, measure required half path length with compasses and draw again circle, complex operation, waste time in classroom.
Utility model content
The problem existing for prior art, the purpose of this utility model is that design provides the technical scheme of a kind of metallic blackboard compasses combined with ruler.
Described a kind of metallic blackboard compasses combined with ruler, it is characterized in that comprising main scale, described main scale end is provided with locating pin, described main scale can rotate around locating pin, described locating pin connects magnetic receiver, described main related scale is provided with chute, is provided with chalk seat in described chute, and described chalk seat is locked in chute by the hold-down nut arranging.
Described a kind of metallic blackboard compasses combined with ruler, is characterized in that described main scale is provided with scale.
Described a kind of metallic blackboard compasses combined with ruler, is characterized in that described magnetic receiver bottom is provided with strong magnet.
The beneficial effects of the utility model are: integrate two kinds of drawing functions of ruler and compasses, magnetic receiver is set, be conveniently fixed on metallic blackboard, convenient mapping; Chalk seat is set, can locates chalk, ensure drawing effect; Chute is set, conveniently draws the circle of different-diameter. This compasses combined with ruler cost is low, is easy to carry about with one, easy to use, is applicable to classroom instruction and uses.
Brief description of the drawings
Fig. 1 is sectional structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model.
In figure: 1-locating pin; 2-magnetic receiver; 3-main scale; 4-hold-down nut; 5-chalk seat; 6-strong magnet; 7-chute; 8-scale.
Detailed description of the invention
Further illustrate the utility model below in conjunction with Figure of description.
As shown in the figure, a kind of metallic blackboard comprises main scale 3 with compasses combined with ruler, and main scale 3 is provided with scale 8. Main scale 3 ends are provided with locating pin 1, and main scale 3 can rotate around locating pin 1, and locating pin 1 connects magnetic receiver 2, and magnetic receiver 2 bottoms are provided with strong magnet 6. Main scale 3 chi faces are provided with chute 7, are provided with chalk seat 5 in chute 7, and chalk seat 5 is locked in chute 7 by the hold-down nut 4 arranging.
When use, chalk is fixed in chalk seat 5, by strong magnet 6, this chi is fixed on metallic blackboard, by regulating the position of chalk seat 5 in chute 7, draw the circle of different-diameter.
Shown in the above and figure is only preferred embodiment of the present utility model. It should be pointed out that for the person of ordinary skill of the art, not departing under the prerequisite of the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.
Claims (3)
1. a metallic blackboard compasses combined with ruler, it is characterized in that comprising main scale (3), described main scale (3) end is provided with locating pin (1), described main scale (3) can rotate around locating pin (1), described locating pin (1) connects magnetic receiver (2), described main scale (3) chi face is provided with chute (7), in described chute (7), is provided with chalk seat (5), and described chalk seat (5) is locked in chute (7) by the hold-down nut (4) arranging.
2. a kind of metallic blackboard compasses combined with ruler as claimed in claim 1, is characterized in that described main scale (3) is provided with scale (8).
3. a kind of metallic blackboard compasses combined with ruler as claimed in claim 1, is characterized in that described magnetic receiver (2) bottom is provided with strong magnet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823889.3U CN205255838U (en) | 2015-10-23 | 2015-10-23 | Metal is compasses chi for blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520823889.3U CN205255838U (en) | 2015-10-23 | 2015-10-23 | Metal is compasses chi for blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205255838U true CN205255838U (en) | 2016-05-25 |
Family
ID=55997386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520823889.3U Expired - Fee Related CN205255838U (en) | 2015-10-23 | 2015-10-23 | Metal is compasses chi for blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205255838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471871A (en) * | 2017-08-04 | 2017-12-15 | 合肥名华教育科技有限公司 | A kind of multi-functional based on education uses teaching ruler |
-
2015
- 2015-10-23 CN CN201520823889.3U patent/CN205255838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107471871A (en) * | 2017-08-04 | 2017-12-15 | 合肥名华教育科技有限公司 | A kind of multi-functional based on education uses teaching ruler |
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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: 20160525 Termination date: 20181023 |