CN202608365U - Multifunctional ruler - Google Patents

Abstract

A multifunctional ruler. It involves a teaching aid used by university mathematics teachers. Using this multifunctional ruler in college mathematics teaching, only one ruler is needed to conveniently and quickly draw complex graphics such as hyperbolas, parabolas, sine curves and cosine curves. The technical solution is: the outer contour edge of the multifunctional ruler of the present utility model is surrounded by two long straight lines and two curved lines, the two long straight lines are set correspondingly, the two curved lines are set correspondingly, and the two long straight lines are set correspondingly. The curve is a hyperbola, and the multi-functional ruler is provided with sinusoidal and cosine-curve grooves respectively. The multi-functional ruler is provided with a hole, and the inner contour edge of the hole is composed of a parabola and a short straight line. The ruler plate of the multi-functional ruler is respectively provided with scale marks near the two long straight lines. The utility model is used in university mathematics classes and provides convenience for mathematics teachers to teach.

Description

A multifunctional ruler

technical field

The utility model relates to a teaching aid used by university mathematics teachers, in particular to a multifunctional ruler.

Background technique

At present, in the mathematics teaching of universities, the commonly used mathematics teaching tools include right-angled triangles, protractors, etc. Using the above-mentioned conventional mathematics teaching aids, only straight lines, acute angles, obtuse angles, and right triangles can be drawn. If complex figures such as hyperbolas and parabolas are drawn, they can only be drawn by hand, which brings inconvenience to mathematics teaching.

Utility model content

The purpose of this utility model is to provide a multifunctional ruler, which can be used to draw complex figures such as hyperbolas, parabolas, sine curves and cosine curves conveniently and quickly with only one ruler in university mathematics teaching .

Realize above-mentioned purpose, the technical scheme that the utility model takes is:

A multifunctional ruler, the outer contour edge of the multifunctional ruler is surrounded by two long straight lines and two curved lines, the two long straight lines are set correspondingly, the two curved lines are set correspondingly, and the two long straight lines are set correspondingly. The first curve is a hyperbola, and the multi-function ruler is provided with a sinusoidal curve groove and a cosine curve groove respectively, and a hole is arranged on the ruler plate of the multi-function ruler. , the ruler plate of the multifunctional ruler is respectively provided with scale marks near the two long straight lines.

The apex of the parabola is located on the longitudinal centerline of the multifunctional ruler.

The sinusoidal grooves and cosine grooves are arranged symmetrically with respect to the center line in the length direction of the multifunctional ruler.

The beneficial effect of the utility model compared with the prior art is: the multifunctional ruler of the utility model can conveniently and quickly draw various complex figures such as hyperbolas, parabolas, sine curves, and cosine curves with one ruler, which can be used for teaching mathematics teachers. Convenience is provided.

Description of drawings

Fig. 1 is a top view of a multifunctional ruler of the present invention.

Wherein, multifunctional ruler 1, long straight line 2, curve 3, sine curve shaped groove 4, cosine curve shaped groove 5, hole 6, parabola 7, short straight line 8, scale mark 9.

Detailed ways

As shown in Figure 1, a multifunctional ruler, the outer contour edge of the multifunctional ruler 1 is surrounded by two long straight lines 2 and two curved lines 3, and the two long straight lines 2 are set correspondingly, so The two curves 3 described above are arranged correspondingly, and the two curves 3 are hyperbolas. The ruler plate of the multifunctional ruler 1 is respectively provided with a sinusoidal curve groove 4 and a cosine curve groove 5, and the ruler plate of the multifunctional ruler 1 is provided with There is a hole 6, the inner contour edge of the hole 6 is composed of a parabola 7 and a short straight line 8, and the ruler plate of the multifunctional ruler 1 is respectively provided with a scale line 9 near the two long straight lines 2, the parabola 7 The apex is located on the longitudinal centerline of the multifunctional ruler 1 , and the sinusoidal grooves 4 and cosine grooves 5 are arranged symmetrically with respect to the longitudinal centerline of the multifunctional ruler 1 . A sinusoidal curve can be drawn through the sinusoidal groove 4 and a cosine curve can be drawn through the cosinelike groove 5 .

Claims (3)

1. multifunctional ruler; It is characterized in that: the outline edge of described multifunctional ruler (1) is surrounded by two long straight lines (2) and two curves (3); The corresponding setting of described two long straight lines (2), the corresponding setting of described two curves (3), two curves (3) are hyperbola; Be respectively equipped with sinusoidal groove (4) and cosine curve shape groove (5) on the chi plate of multifunctional ruler (1); The chi plate of multifunctional ruler (1) is provided with hole (6), and the interior contour edge of hole (6) is made up of a parabola (7) and a short lines (8), locates respectively to be respectively equipped with graduation mark (9) near two long straight lines (2) on the chi plate of multifunctional ruler (1).

2. multifunctional ruler as claimed in claim 1 is characterized in that: the summit of described parabola (7) is positioned on the length direction center line of described multifunctional ruler (1).

3. according to claim 1 or claim 2 multifunctional ruler, it is characterized in that: described sinusoidal groove (4) and cosine curve shape groove (5) all are symmetrical set with respect to the length direction center line of described multifunctional ruler (1).

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