CN203637402U - Sine and cosine marking gage - Google Patents
Sine and cosine marking gage Download PDFInfo
- Publication number
- CN203637402U CN203637402U CN201320888491.9U CN201320888491U CN203637402U CN 203637402 U CN203637402 U CN 203637402U CN 201320888491 U CN201320888491 U CN 201320888491U CN 203637402 U CN203637402 U CN 203637402U
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- CN
- China
- Prior art keywords
- movable
- sine
- cosine
- framework
- fixed pulleys
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model belongs to the field of teaching aids, and relates to a sine and cosine marking gage which comprises a square frame. Two fixed pulleys are mounted on two side columns of the frame through rotating shafts and are connected in a transmission mode through a belt, the belt enables the two fixed pulleys to rotate synchronously, the two ends of a movable cross rod are hinged to the same positions of the edges of the two fixed pulleys, a slide rail is arranged in the middle of the movable cross rod, a movable vertical rod is perpendicular to the movable cross rod and is mounted in the slide rail, the two ends of the movable vertical rod are mounted in slide rails of an upper beam and a lower beam of the frame, a pen head is fixed on the movable vertical rod, and the sine and cosine marking gage is simple and easy to achieve.
Description
Technical field
The utility model relates to a kind of sine and cosine line drawing ruler, belongs to educational aid field.
Background technology
In mathematical education, the setting-out of teacher's offset of sinusoidal, cosine performance is comparatively random, when later stage mapping, causes data inaccurate, and the information of passing on is directly perceived not, and inconvenient student understands, and does not also draw very easily the instrument of sine and cosine now.
Utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of simple sine and cosine line drawing ruler is provided.
Sine and cosine line drawing ruler described in the utility model, comprise the framework of square frame-shaped, on framework two side columns, by rotating shaft, two fixed pulleys are installed, fixed pulley connects by belt transmission, and belt synchronously rotates two fixed pulleys, and movable cross bar two ends are hinged on the same position of two fixed pulley rim section, slide rail is established at movable cross bar middle part, movable montant is perpendicular to movable cross bar and be arranged in guide rail, and movable montant two ends are arranged in the slide rail of upper and lower two beams of framework, fixing nib on movable montant.
Magnet is installed on framework, is convenient to be adsorbed on irony blackboard.
Operation principle and process:
When work, sine and cosine line drawing ruler is adsorbed on blackboard, rotates fixed pulley, movable cross bar moves up and down, and movable montant is to other end motion in guide rail, and nib draws track on blackboard, fixed pulley rotates a circle, and nib draws sinusoidal line or cosine line on blackboard.
The beneficial effect that the utility model compared with prior art had is:
Sine and cosine line drawing ruler described in the utility model, simple in structure, easy to operate, the sinusoidal line drawing and cosine line neat appearance, be easy to later stage mapping and Students ' Learning.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram.
In figure: 1, fixed pulley; 2, magnet; 3, framework; 4, movable cross bar; 5, nib; 6, movable montant; 7, belt; 8, guide rail.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, sine and cosine line drawing ruler described in the utility model, comprise the framework 3 of square frame-shaped, on framework 3 two side columns, by rotating shaft, two fixed pulleys 1 are installed, fixed pulley 1 is in transmission connection by belt 7, belt 7 synchronously rotates two fixed pulleys 1, movable cross bar 4 two ends are hinged on the same position of two fixed pulley 1 rim section, guide rail 8 is established at movable cross bar 4 middle parts, movable montant 6 is perpendicular to movable cross bar 4 and be arranged in guide rail 8, movable montant 6 two ends are arranged in the slide rail of upper and lower two beams of framework 3, fixing nib 5 on movable montant 6.
Magnet 2 is installed on framework 3, is convenient to be adsorbed on irony blackboard.
Operation principle and process:
When work, sine and cosine line drawing ruler is adsorbed on blackboard, rotates fixed pulley 1, movable cross bar 4 moves up and down, and movable montant 6 is to other end motion in guide rail, and nib 5 draws track on blackboard, fixed pulley 1 rotates a circle, and nib 5 draws sinusoidal line or cosine line on blackboard.
Claims (2)
1. a sine and cosine line drawing ruler, it is characterized in that: the framework (3) that comprises square frame-shaped, on framework (3) two side columns, by rotating shaft, two fixed pulleys (1) are installed, fixed pulley (1) is in transmission connection by belt (7), belt (7) synchronously rotates two fixed pulleys (1), movable cross bar (4) two ends are hinged on the same position of two fixed pulleys (1) rim section, guide rail (8) is established at movable cross bar (4) middle part, movable montant (6) is perpendicular to movable cross bar (4) and be arranged in guide rail (8), movable montant (6) two ends are arranged in the slide rail of upper and lower two beams of framework (3), the upper fixing nib of movable montant (6) (5).
2. sine and cosine line drawing ruler according to claim 1, is characterized in that: the upper magnet (2) of installing of framework (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888491.9U CN203637402U (en) | 2013-12-31 | 2013-12-31 | Sine and cosine marking gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888491.9U CN203637402U (en) | 2013-12-31 | 2013-12-31 | Sine and cosine marking gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203637402U true CN203637402U (en) | 2014-06-11 |
Family
ID=50868678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888491.9U Expired - Fee Related CN203637402U (en) | 2013-12-31 | 2013-12-31 | Sine and cosine marking gage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203637402U (en) |
-
2013
- 2013-12-31 CN CN201320888491.9U patent/CN203637402U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |