CN101284473A - A multifunctional drawing ruler - Google Patents

Abstract

The invention discloses a multifunctional drawing ruler, comprising: a disk with a 360° angle scale, and a ruler with a length scale; a hole is opened in the center of the disk, and the scale of the ruler is relatively large. The small end is also provided with a hole, and the disc and the ruler pass through the two holes through a rotating shaft, so that the ruler and the disc can rotate around the rotating shaft; gap. The multifunctional drawing ruler designed by the invention has simple structure and convenient use, and has the functions of a ruler, a compasses and a protractor, so that drawing work is simplified and flexible to use.

Description

A multifunctional drawing ruler

technical field

The invention relates to a drawing ruler, in particular to a multifunctional drawing ruler suitable for drawing various figures.

Background technique

When drawing, we will inevitably encounter some difficulties. For example, when drawing an equilateral triangle, it involves angles and lengths. At this time, the traditional method is to use a ruler and a protractor to complete it. You have to bring compass. In this way, there are many tools to carry, one is troublesome, and the other is easy to lose.

Therefore, it is a comparatively important research to design a kind of multifunctional drawing ruler that has the functions of ruler, compass and protractor concurrently.

Contents of the invention

The purpose of the present invention is to provide a multifunctional drawing ruler, which has the functions of a ruler, a compass and a protractor, so that the drawing work is simplified and the use is flexible.

The purpose of the present invention can be achieved through the following technical solutions.

A multifunctional drawing ruler, comprising:

A disc with a 360° angle scale,

a ruler with length scales;

There is a hole in the center of the disc, and a hole is also arranged at the smaller end of the ruler scale. The disc and the ruler pass through the two holes through a rotating shaft, so that the ruler and the disc can go around the rotating shaft. Rotation; Slender slits are provided on the central axis parallel to the horizontal edge of the ruler.

A fixing part is arranged on the straightedge, the fixing part is set on the straightedge, and the sliding of the fixing part is controlled by a tightening device; a round hole is arranged on the fixing part at a position overlapping with the gap.

The ruler is a folding mechanism or a telescopic mechanism.

The multifunctional drawing ruler designed by the invention has simple structure and convenient use, and has the functions of a ruler, a compasses and a protractor, so that the drawing work is simplified and the use is flexible.

Description of drawings

Fig. 1 is a structural representation of the present invention;

In the figure: 1-Disc 2-Ruler 3-Rotating shaft

4-Gap 5-Fixer 6-Round hole

Detailed ways

The technical features of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

A kind of multifunctional drawing ruler as shown in Figure 1, comprises: a disk 1 with 360 ° angle scale, a ruler 2 with length scale; The center of described disk 1 has a hole, and described The smaller end of the scale of the ruler 2 is also provided with a hole, and the disc 1 and the ruler 2 pass through two holes through a rotating shaft 3, so that the ruler 2 and the disc 1 can rotate around this rotating shaft; Slender slits 4 are arranged on the central axis parallel to the lateral sides.

Example 1

equilateral triangle

1. Use ruler 2 as a line segment of unit length;

2. Align the hole on the rotating shaft 3 with the left endpoint of the line segment, rotate the ruler 3, measure 60 degrees on the disc 2, read the unit length on the ruler 3, and use a pen to match the gap 4 of the ruler 3 Mark the position;

3. Connect the left end point and the mark point;

4. Connect the right endpoint and the marked point to complete the drawing of an equilateral triangle.

Example 2

unit circle

1. Determine the center of the circle;

2. Align the hole of the rotating shaft 3 with the center of the circle;

3. Use the ruler 2 to measure the unit length, and move the fixing part 5 to determine the position, so that the length from the center of the circle to the round hole 6 on the fixing part 5 is the radius;

4. Insert the nib into the round hole 6 on the fixing part 5;

5. Turn the ruler 2 around to obtain the unit circle.

Claims (3)

1, a kind of multifunctional drawing ruler comprises: one has the disk (1) of 360 ° of angle indexs, and one has the ruler (2) of length scale; It is characterized in that: the center of described disk (1) has a hole, the less end of described ruler (2) scale also is provided with a hole, disk (1) and ruler (2) pass two holes by a rotating shaft (3), and ruler (2) and disk (1) can be rotated around this rotating shaft; The axis parallel with ruler (2) horizontal edge is provided with elongated slit (4).

2, multifunctional drawing ruler according to claim 1 is characterized in that: described ruler (2) is provided with fixture (5), and fixture (5) is enclosed within on the ruler (2); Go up the position that overlaps with the slit at fixture (5) and be provided with circular hole (6).

3, multifunctional drawing ruler according to claim 1 is characterized in that: described ruler (2) is fold mechanism or telescoping mechanism.