CN203681080U - Compass for teaching - Google Patents
Compass for teaching Download PDFInfo
- Publication number
- CN203681080U CN203681080U CN201420022837.1U CN201420022837U CN203681080U CN 203681080 U CN203681080 U CN 203681080U CN 201420022837 U CN201420022837 U CN 201420022837U CN 203681080 U CN203681080 U CN 203681080U
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- CN
- China
- Prior art keywords
- supporting leg
- chalk
- terminal pad
- fixed
- fixed supporting
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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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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The utility model discloses a compass for teaching. The compass comprises a connecting disk. A handle is fixedly connected to the upper portion of the connecting disk. A fixed supporting leg is fixedly connected to the lower portion of the connecting disk. A movable supporting leg is rotatably connected to the connecting disk. The end, far away from the connecting disk, of the fixed supporting leg is connected with a sucker through a universal joint. The end, far away from the movable supporting leg is rotatably connected with a chalk fixing frame. A chalk clamp is connected to the chalk fixing frame in an integrated mode. A first fastening screw used for fastening chalk is arranged on a chalk sleeve. A sliding groove is formed in the fixed supporting leg. A locating seat is connected in the sliding groove in a sliding mode. A locating knob is connected to the locating seat in a rotating mode. A locating pin is arranged in the position, close to the connecting disk, in the fixed supporting leg. A thin rope is connected between the locating knob and the locating pin. A connecting seat is arranged on the thin rope in a sleeved mode. The chalk sleeve is connected with the connecting seat in an integrated mode. Graduation lines are arranged in a position, close to the sliding groove, of the fixed supporting leg. The compass integrates circle drawing and oval drawing, is high in integration degree, and can be carried and used by teachers conveniently.
Description
Technical field
The utility model relates to teaching aid field, relates to specifically a kind of compasses for teaching.
Background technology
Existing compasses for teaching, its termination of determining pin pole is all to adopt syringe needle location, will rotate compasses at picture bowlder, adopts syringe needle well on blackboard, not locate.Existing calipers function is single in addition, only has picture circle function, can not draw ellipse, and ellipse is also conventional figure in mathematical theory teaching, in the time drawing ellipse, conventionally ellipse is divided into four sections of camber lines, and then pieces together, or draw by oval template.Now also there is the oval instrument of independent drafting, but these tool construction complexity.Teacher also needs to carry multiple educational aid at school time, uses inconveniently, and therefore educational aid is integrated, and multifunction is the developing direction of modern teaching apparatus.
Summary of the invention
The technical problems to be solved in the utility model is for the deficiencies in the prior art, provides a kind of integrated degree high, easy to carry, simple in structure, convenient compasses for teaching of locating on blackboard.
For addressing the above problem, the utility model by the following technical solutions:
A kind of compasses for teaching, comprise terminal pad, the top of described terminal pad is fixedly connected with handle, the bottom of described terminal pad is fixedly connected with fixed supporting leg, on described terminal pad, be rotatably connected to movable supporting legs, one end away from terminal pad on described fixed supporting leg is connected with sucker by Universal connector, on described movable supporting legs, be rotatably connected to chalk fixed mount away from one end of terminal pad, on described chalk fixed mount, be connected with chalk folder, described chalk sleeve is provided with the first trip bolt for tightening chalk, on described fixed supporting leg, offer chute, in chute, slidably connect positioning seat, on positioning seat, be rotatably connected to positioning knob, position near terminal pad on described fixed supporting leg is provided with alignment pin, between described positioning knob and alignment pin, be connected with cord, on described cord, be set with Connection Block, on described Connection Block, be connected with chalk sleeve, position near chute on described fixed supporting leg is provided with graduation mark.
Below further improvement of the utility model:
On described fixed supporting leg, be fixedly connected with fixed ruler, on described movable supporting legs, be fixedly connected with angle measuring scale, described angle measuring scale relatively fixed ruler slides, on described fixed ruler, be fixedly connected with second and tighten screw, tighten second and tighten screw and angle measuring scale and fixed ruler can be fixed together.
The utility model adopts technique scheme, integrates picture circle and draws ellipse, and integrated degree is high, facilitates teacher to carry and uses; The setting of sucker can be located by Convenient compasses on blackboard; The size of draw circles can be conveniently determined in the setting of angle measuring scale, can rapid drawing makes the circle of different-diameter, easy to use.
Be described further below in conjunction with accompanying drawing the technical solution of the utility model.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the utility model embodiment.
In figure: 1-handle; 2-terminal pad; 3-movable supporting legs; 4-chalk fixed mount; 5-chalk folder; 6-the-trip bolt; 7-angle measuring scale; 8-fixed ruler; 9-fixed supporting leg; 10-second tightens screw; 11-sucker; 12-chute; 13-graduation mark; 14-alignment pin; 15-positioning seat; 16-cord; 17-positioning knob; 18-Universal connector; 19-Connection Block; 20-chalk sleeve.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of compasses for teaching, comprise terminal pad 2, the top of described terminal pad 2 is fixedly connected with handle 1, the bottom of described terminal pad 2 is fixedly connected with fixed supporting leg 9, on described terminal pad 2, be rotatably connected to movable supporting legs 3, one end away from terminal pad 2 on described fixed supporting leg 4 is connected with sucker 11 by Universal connector 18, on described movable supporting legs 3, be rotatably connected to chalk fixed mount 4 away from one end of terminal pad 2, on described chalk fixed mount 4, be connected with chalk folder 5, described chalk sleeve 5 is provided with the first trip bolt 6 for tightening chalk, on described fixed supporting leg 9, offer chute 12, in chute 12, slidably connect positioning seat 15, on positioning seat 15, be rotatably connected to positioning knob 17, position near terminal pad 2 on described fixed supporting leg 9 is provided with alignment pin 14, between described positioning knob 17 and alignment pin 14, be connected with cord 16, on described cord 16, be set with Connection Block 19, on described Connection Block 19, be connected with chalk sleeve 20, position near chute 12 on described fixed supporting leg 9 is provided with graduation mark 13.
On described fixed supporting leg 4, be fixedly connected with fixed ruler 8, on described movable supporting legs 3, be fixedly connected with angle measuring scale 7, described angle measuring scale 7 relatively fixed ruler 8 slides, on described fixed ruler 8, be fixedly connected with second and tighten screw 10, tighten second and tighten screw 10 and angle measuring scale 7 and fixed ruler 8 can be fixed together.
When use, the setting of sucker 11 can be located by Convenient compasses on blackboard, and chalk is fixed in chalk sleeve 20, drives chalk sleeve 20 to slide and can draw ellipse along cord 16, draws oval size by adjusting the position capable of regulating of positioning seat 15 in chute 12.
Claims (2)
1. a compasses for teaching, comprise terminal pad (2), the top of described terminal pad (2) is fixedly connected with handle (1), the bottom of described terminal pad (2) is fixedly connected with fixed supporting leg (9), on described terminal pad (2), be rotatably connected to movable supporting legs (3), it is characterized in that: described fixed supporting leg (4) is upper is connected with sucker (11) away from one end of terminal pad (2) by Universal connector (18), described movable supporting legs (3) is upper is rotatably connected to chalk fixed mount (4) away from one end of terminal pad (2), on described chalk fixed mount (4), be connected with chalk folder (5), described chalk sleeve (5) is provided with the first trip bolt (6) for tightening chalk, on described fixed supporting leg (9), offer chute (12), in chute (12), slidably connect positioning seat (15), on positioning seat (15), be rotatably connected to positioning knob (17), the upper position near terminal pad (2) of described fixed supporting leg (9) is provided with alignment pin (14), between described positioning knob (17) and alignment pin (14), be connected with cord (16), on described cord (16), be set with Connection Block (19), on described Connection Block (19), be connected with chalk sleeve (20), the upper position near chute (12) of described fixed supporting leg (9) is provided with graduation mark (13).
2. a kind of compasses for teaching according to claim 1, it is characterized in that: on described fixed supporting leg (4), be fixedly connected with fixed ruler (8), on described movable supporting legs (3), be fixedly connected with angle measuring scale (7), described angle measuring scale (7) relatively fixed ruler (8) slides, on described fixed ruler (8), be fixedly connected with second and tighten screw (10), tighten second and tighten screw (10) and angle measuring scale (7) and fixed ruler (8) can be fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022837.1U CN203681080U (en) | 2014-01-04 | 2014-01-04 | Compass for teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022837.1U CN203681080U (en) | 2014-01-04 | 2014-01-04 | Compass for teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203681080U true CN203681080U (en) | 2014-07-02 |
Family
ID=51003029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420022837.1U Expired - Fee Related CN203681080U (en) | 2014-01-04 | 2014-01-04 | Compass for teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203681080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
-
2014
- 2014-01-04 CN CN201420022837.1U patent/CN203681080U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104228406A (en) * | 2014-08-25 | 2014-12-24 | 苏州市职业大学 | Chalk sleeve for drawing various straight lines and circles |
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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 |
Granted publication date: 20140702 Termination date: 20150104 |
|
| EXPY | Termination of patent right or utility model |