CN205238952U - Compass for teaching - Google Patents
Compass for teaching Download PDFInfo
- Publication number
- CN205238952U CN205238952U CN201620006116.0U CN201620006116U CN205238952U CN 205238952 U CN205238952 U CN 205238952U CN 201620006116 U CN201620006116 U CN 201620006116U CN 205238952 U CN205238952 U CN 205238952U
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- CN
- China
- Prior art keywords
- circumference
- circle
- pin
- foot
- double
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- 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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Abstract
The utility model provides a compass for teaching, the utility model relates to a teaching compasses. The problem of the existence of current teaching compasses hurts the blackboard easily, and drawing in -process radius easily changes, and the oval -shaped drawing is complicated, and the teaching aid dispersion is difficult for carrying is solved. Centre of a circle foot and circumference foot articulate in the connecting seat, and the double -screw bolt runs through and sets up in centre of a circle foot and circumference foot, is equipped with the pressure spring on the double -screw bolt between centre of a circle foot and the circumference foot, and the double -screw bolt both sides are equipped with the fender head, keep off and are equipped with stop nut between the first and circumference foot of head and centre of a circle foot and fender respectively, be equipped with the guide rail on the foot of the centre of a circle, be equipped with two in the guide rail and remove the axle, be equipped with the rope chi between two moving axis, first telescopic link and second telescopic link set up on the side of circumference foot, and the one end of first telescopic link is articulated mutually with circumference foot upper portion, and the other end of first telescopic link articulates with the one end of second telescopic link mutually, and the other end of second telescopic link articulates with circumference sole portion mutually, centre of a circle underfooting end and sucking disc ball pivot, circumference underfooting end is articulated mutually with the pendulum rod, and the lower extreme of pendulum rod is equipped with chalk clip.
Description
Technical field
The utility model relates to a kind of compasses for teaching.
Background technology
In teaching process, need picture bowlder, all adopt compasses for teaching, common compasses wherein fixing feet adopt syringe needle, anotherOne leg is fixed paintbrush, and when use, syringe needle easily injures blackboard, when common drawing for compasses, needs first to carry out amount compasses two with rulerThe distance that pin opens is to determine radius of a circle, in drawing process, unbalanced due to what exert oneself, the distance between compass leg and a legFrom easy variation, cause the radius of drawn circle to change, can not get needed circle, in teaching process, paint oval-shapedDraw complexity, and educational compasses effect is single, in teaching process, teaching aid relatively disperses, not portable.
Utility model content
The purpose of this utility model is to provide a kind of compasses for teaching. There is easy injury blackboard to solve existing educational compasses,The radius malleable of circle in painting process, oval-shaped drawing complexity, in teaching process, teaching aid relatively disperses, not portableProblem.
A kind of compasses for teaching of the utility model comprises center of circle pin, circumference pin, Connection Block, double-screw bolt, the first stop nut, theTwo stop nuts, stopper, stage clip, the first shifting axle, the second shifting axle, the first expansion link, the second expansion link, rope chi,Tape measure, sucker, fork, chalk folder and chalkboard eraser;
Center of circle pin and circumference pin are articulated with in Connection Block, and double-screw bolt runs through and is arranged at center of circle pin and circumference pin top, center of circle pin and circleDouble-screw bolt between all pin is provided with stage clip, and double-screw bolt both side ends is provided with respectively stopper, on the double-screw bolt between stopper and center of circle pin, establishesHave the first stop nut, the double-screw bolt between stopper and circumference pin is provided with the second stop nut;
Center of circle pin is provided with guide rail along its length, is provided with the first shifting axle and the second shifting axle in guide rail, the first shifting axle andBetween two shifting axles, be provided with rope chi;
The first expansion link and the second expansion link are arranged on the side of circumference pin, and one end of the first expansion link and circumference pin topBe hinged, one end of the other end of the first expansion link and the second expansion link is hinged, the other end of the second expansion link and circumference pinBottom is hinged;
Underfooting, center of circle end and sucker ball pivot;
The upper end of circumference underfooting end and fork is hinged, and the lower end of fork is provided with chalk folder.
The beneficial effects of the utility model are: 1, by regulating the first shifting axle and the second shifting axle that are provided with in guide rail, and canDraw oval, hyperbola to realize, in the time drawing ellipse or hyperbola, can focus arbitrarily and restrict length simultaneously;
2, run through the double-screw bolt of center of circle pin and circumference pin by setting, the first stop nut, the second limit are set respectively on double-screw boltPosition nut and stage clip, can make center of circle pin and the circumference pin set also not diminish greatly apart from constant, draws rule and meet the requirementsCircle;
3, by regulating the first expansion link and the second expansion link can draw random angle and triangle at any angle;
4, by sucker, compasses are fixed, when use, the center of circle can not be moved, very rounding of the circle drawing;
5, underfooting, center of circle end and sucker ball pivot, when use, center of circle pin is free to rotate;
6, be provided with chalkboard eraser by Connection Block upper end and can conveniently revise figure;
7, the tape measure being provided with by circumference foot bottom one side can be convenient for measuring the size of drawn figure;
8, the utility model one advise multiplex, improve efficiency of teaching, be easy to carry, with low cost, be easy to large-scale promotion shouldWith.
The utility model is for a kind of compasses for teaching.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of compasses for teaching of the utility model.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises between each detailed description of the inventionAny combination.
Detailed description of the invention one: illustrate present embodiment below in conjunction with Fig. 1. The one of present embodiment circle for teachingRule comprise center of circle pin 1, circumference pin 2, Connection Block 3, double-screw bolt 4, the first stop nut 5-1, the second stop nut 5-2,Stopper 6, stage clip 7, the first shifting axle 9, the second shifting axle 10, the first expansion link 11, the second expansion link 12, rope chi13, tape measure 14, sucker 17, fork 18, chalk folder 19 and chalkboard eraser 20;
Center of circle pin 1 is articulated with in Connection Block 3 with circumference pin 2, and double-screw bolt 4 runs through and is arranged at center of circle pin 1 and circumference pin 2 tops,Double-screw bolt 4 between center of circle pin 1 and circumference pin 2 is provided with stage clip 7, and double-screw bolt 4 both side ends are provided with respectively stopper 6, stopper6 and center of circle pin 1 between double-screw bolt 4 be provided with the first stop nut 5-1, on the double-screw bolt 4 between stopper 6 and circumference pin 2Be provided with the second stop nut 5-2;
Center of circle pin 1 is provided with guide rail 8 along its length, is provided with the first shifting axle 9 and the second shifting axle 10, the first in guide rail 8Between shifting axle 9 and the second shifting axle 10, be provided with rope chi 13;
The first expansion link 11 and the second expansion link 12 are arranged on the side of circumference pin 2, and one end of the first expansion link 11Be hinged with circumference pin 2 tops, one end of the other end of the first expansion link 11 and the second expansion link 12 is hinged, and second stretchesThe other end of contracting bar 12 and circumference pin 2 bottoms are hinged;
Center of circle pin 1 lower end and sucker 17 ball pivots;
The upper end of circumference pin 2 lower ends and fork 18 is hinged, and the lower end of fork 18 is provided with chalk folder 19.
The beneficial effect of detailed description of the invention is: 1, be provided with the first shifting axle 9 and the second shifting axle by regulating in guide rail 810, can realize and draw oval, hyperbola, in the time drawing ellipse or hyperbola, can focus arbitrarily and restrict length simultaneously;
2, run through the double-screw bolt 4 of center of circle pin 1 and circumference pin 2 by setting, on double-screw bolt 4, arrange respectively the first stop nut 5-1,The second stop nut 5-2 and stage clip 7, can make center of circle pin 1 and the circumference pin 2 set also not diminish greatly apart from constant, draws ruleWith satisfactory circle;
3, by regulating the first expansion link 11 and the second expansion link 12 can draw random angle and triangle at any angle;
4, by sucker 17, compasses are fixed, when use, the center of circle can not be moved, very rounding of the circle drawing;
5, center of circle pin 1 lower end and sucker 17 ball pivots, when use, center of circle pin 1 is free to rotate;
6, be provided with chalkboard eraser 20 by Connection Block 3 upper ends and can conveniently revise figure;
7, the tape measure 14 being provided with by circumference pin 2 bottom one sides can be convenient for measuring the size of drawn figure;
8, the utility model one advise multiplex, improve efficiency of teaching, be easy to carry, with low cost, be easy to large-scale promotion shouldWith.
Detailed description of the invention two: present embodiment is different from detailed description of the invention one: described Connection Block 3 upper endsBe provided with chalkboard eraser 20. Other is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment is different from one of detailed description of the invention one or two: described circleAll pin 2 bottom one sides are provided with tape measure 14. Other is identical with detailed description of the invention one or two.
Claims (3)
1. a compasses for teaching, is characterized in that a kind of compasses for teaching comprises center of circle pin (1), circumference pin (2), connectsSeat (3), double-screw bolt (4), the first stop nut (5-1), the second stop nut (5-2), stopper (6), stage clip (7), theOne shifting axle (9), the second shifting axle (10), the first expansion link (11), the second expansion link (12), rope chi (13), volumeChi (14), sucker (17), fork (18), chalk folder (19) and chalkboard eraser (20);
Center of circle pin (1) and circumference pin (2) are articulated with in Connection Block (3), and double-screw bolt (4) runs through and is arranged at center of circle pin (1)With circumference pin (2) top, the double-screw bolt (4) between center of circle pin (1) and circumference pin (2) is provided with stage clip (7), double-screw bolt(4) both side ends is provided with respectively stopper (6), and the double-screw bolt (4) between stopper (6) and center of circle pin (1) is provided with firstStop nut (5-1), the double-screw bolt (4) between stopper (6) and circumference pin (2) is provided with the second stop nut (5-2);
Center of circle pin (1) is provided with guide rail (8) along its length, is provided with the first shifting axle (9) and second and moves in guide rail (8)Axle (10), is provided with rope chi (13) between the first shifting axle (9) and the second shifting axle (10);
The first expansion link (11) and the second expansion link (12) are arranged on the side of circumference pin (2), and the first expansion link (11)One end and circumference pin (2) top be hinged, one end of the other end of the first expansion link (11) and the second expansion link (12)Be hinged, the other end of the second expansion link (12) and circumference pin (2) bottom are hinged;
Center of circle pin (1) lower end and sucker (17) ball pivot;
The upper end of circumference pin (2) lower end and fork (18) is hinged, and the lower end of fork (18) is provided with chalk folder (19).
2. a kind of compasses for teaching according to claim 1, is characterized in that described Connection Block (3) upper end is provided withChalkboard eraser (20).
3. a kind of compasses for teaching according to claim 1, is characterized in that described circumference pin (2) bottom one sideBe provided with tape measure (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620006116.0U CN205238952U (en) | 2016-01-04 | 2016-01-04 | Compass for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620006116.0U CN205238952U (en) | 2016-01-04 | 2016-01-04 | Compass for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205238952U true CN205238952U (en) | 2016-05-18 |
Family
ID=55938027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620006116.0U Expired - Fee Related CN205238952U (en) | 2016-01-04 | 2016-01-04 | Compass for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205238952U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106114013A (en) * | 2016-08-31 | 2016-11-16 | 甄泓忠 | The Geometric figure drawing compasses that a kind of students in mathematics teaching is special |
| CN107839386A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第高级中学 | A kind of spacing compasses |
| CN108583084A (en) * | 2018-05-28 | 2018-09-28 | 喻正江 | A kind of compasses for teaching |
| CN114407558A (en) * | 2022-03-07 | 2022-04-29 | 浙江国际海运职业技术学院 | Drawing tool for mathematical education |
| CN115257216A (en) * | 2022-09-07 | 2022-11-01 | 广州市悟生文具有限公司 | Press compasses |
-
2016
- 2016-01-04 CN CN201620006116.0U patent/CN205238952U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106114013A (en) * | 2016-08-31 | 2016-11-16 | 甄泓忠 | The Geometric figure drawing compasses that a kind of students in mathematics teaching is special |
| CN107839386A (en) * | 2017-11-13 | 2018-03-27 | 许昌市建安区第高级中学 | A kind of spacing compasses |
| CN108583084A (en) * | 2018-05-28 | 2018-09-28 | 喻正江 | A kind of compasses for teaching |
| CN114407558A (en) * | 2022-03-07 | 2022-04-29 | 浙江国际海运职业技术学院 | Drawing tool for mathematical education |
| CN115257216A (en) * | 2022-09-07 | 2022-11-01 | 广州市悟生文具有限公司 | Press compasses |
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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: 20160518 Termination date: 20170104 |