CN215413463U

CN215413463U - Multifunctional protractor

Info

Publication number: CN215413463U
Application number: CN202122245580.9U
Authority: CN
Inventors: 刘云峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-04
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a multifunctional protractor, which comprises a protractor, a degree comparison ruler and a circle drawing ruler, wherein a semicircular first angle line is arranged on the outer side of the protractor, a second angle line adaptive to the angle line is arranged on the inner side of the protractor, length scales are arranged at the bottom of the protractor, a first through hole and a second through hole which are perpendicular to each other are arranged in the middle of the protractor, the starting end of the degree comparison ruler is rotatably connected to a central point of the protractor, a parallel line is arranged on the degree comparison ruler, length scales are arranged on the parallel line, the starting end of the circle drawing ruler is rotatably connected to the bottom of the protractor, a plurality of round holes are uniformly distributed on the circle drawing ruler, and length scales are arranged on one side of the circle drawing ruler. The utility model has simple structure, unique shape, small size and beautiful appearance, and is greatly convenient for teachers to use in teaching and students to use in daily study.

Description

Multifunctional protractor

Technical Field

The utility model relates to the technical field of drawing rules, in particular to a multifunctional protractor.

Background

At present, a general protractor can measure an angle and draw an angle, and has the following problems:

(1) the function is less. Only angles can be measured and angles can be drawn, and line segments or straight lines can be drawn by using the bottom edges.

(2) If the two sides of the angle are shorter than the range of the protractor, the accurate degree cannot be easily measured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multifunctional protractor which improves the measurement efficiency and adds various drawing functions.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model discloses a multifunctional protractor which comprises a protractor, a degree comparison ruler and a circle drawing ruler, wherein a semicircular first angle line is arranged on the outer side of the protractor, a second angle line matched with the angle line is arranged on the inner side of the protractor, length scales are arranged at the bottom of the protractor, a first through hole and a second through hole which are perpendicular to each other are arranged in the middle of the protractor, the starting end of the degree comparison ruler is rotatably connected to the center point of the protractor, a parallel line is arranged on the degree comparison ruler, the length scales are arranged on the parallel line, the starting end of the circle drawing ruler is rotatably connected to the bottom of the protractor, a plurality of round holes are uniformly distributed on the circle drawing ruler, and the length scales are arranged on one side of the circle drawing ruler.

The starting end of the degree comparison ruler is rotationally connected with the circle center of the protractor through a snap nail.

The first through hole is coincided with the 0-degree scale line of the protractor, and the second through hole is coincided with the 90-degree scale line of the protractor.

The outer sides of the first through hole and the second through hole are provided with length scales in parallel.

The 0 ° graduation mark of the second angle line corresponds to the 0 ° graduation mark of the protractor, and the 180 ° graduation mark of the second angle line corresponds to the 180 ° graduation mark of the protractor.

Compared with the prior art, the utility model has the beneficial technical effects that:

according to the utility model, the functions of the protractors with special angles and general angles are realized through the mutually hinged protractors and the degree comparison ruler, so that the reading precision is improved; the first through hole and the second through hole are arranged on the ruler surface of the protractor, so that the function of drawing a right angle according to the size is realized; meanwhile, the bottom of the protractor is hinged with a circle drawing ruler, so that the function of drawing circles and semicircles generally can be realized.

The utility model has simple structure, unique shape, small size and beautiful appearance, and is greatly convenient for teachers to use in teaching and students to use in daily study.

Drawings

The utility model is further illustrated in the following description with reference to the drawings.

Fig. 1 is a schematic structural view of the multifunctional protractor of the present invention;

description of reference numerals: 1. a protractor; 101. a first through hole; 102. a second through hole; 2. a degree comparison ruler; 201. parallel lines; 3. drawing a round ruler; 301. a circular hole.

Detailed Description

As shown in fig. 1, a multifunctional protractor, including protractor 1, the number of degrees compares chi 2 and draws circle chi 3, the outside of protractor 1 is equipped with semicircular first angle line, the inboard of protractor 1 is equipped with the second angle line that suits with first angle line, the bottom of protractor 1 is equipped with the length scale, the middle part of protractor 1 is equipped with mutually perpendicular's first through-hole 101 and second through-hole 102, the number of degrees compares that the initiating terminal of chi 2 is rotatable to be connected on the centre of circle point of protractor 1, the number of degrees compares and is equipped with a parallel line 201 on chi 2, be equipped with the length scale on the parallel line 201, the rotatable bottom of connecting at protractor 1 of initiating terminal of drawing circle chi 3, the equipartition has a plurality of round holes 301 on the drawing circle chi 3, one side of drawing circle chi 3 is equipped with the length scale.

Specifically, the starting end of the degree comparison ruler 2 is rotationally connected with the circle center of the protractor 1 through a snap pin.

Specifically, the first through hole 101 coincides with the 0 ° scale line of the protractor 1, and the second through hole 102 coincides with the 90 ° scale line of the protractor 1.

Specifically, the outer sides of the first through hole 101 and the second through hole 102 are provided with length scales in parallel.

Specifically, the 0 ° graduation mark of the second angle line corresponds to the 0 ° graduation mark of the protractor 1, and the 180 ° graduation mark of the second angle line corresponds to the 180 ° graduation mark of the protractor 1.

The using process of the utility model is as follows:

first, in the first embodiment of the present invention, the angle is measured, the center of the protractor 1 coincides with the intersection of the measured angle, the 0 ° scale line of the protractor 1 coincides with one side of the measured angle, the parallel line 201 on the rotation degree comparison ruler 2 coincides with the other side of the measured angle, and the degree of the scale indicated by the parallel line 201 in the protractor 1 is read.

Be equipped with two on the protractor 1, the outside of protractor 1 is equipped with semicircular first angle line, and the inboard of protractor 1 is equipped with the second angle line that suits with the angle line, and the second angle line is first angle line equal proportion and zooms, is applicable to the angular surveying of the figure of equidimension not, convenient to use, improves the precision of reading.

In the second embodiment of the utility model, the circle is drawn, the circle drawing ruler 3 is marked with length scales, the measuring range of the scales is 0cm-31cm, a round hole 301 is arranged in the middle of any scale mark, and a pen point is inserted into the round hole 301 by taking the bottom of the snap nail of the circle drawing ruler 3 as the center of a circle, so that a semicircle or a circle can be drawn.

According to the third embodiment of the utility model, a right-angled triangle is drawn, the first through hole 101 is located on a 0-degree scale line of the protractor 1, the second through hole 102 is located on a 90-degree scale line of the protractor 1, the first through hole 101 and the second through hole 102 intersect at the center of the protractor 1, two sides of a right angle can be drawn through the first through hole 101 and the second through hole 102, length scales are arranged on the outer sides of the first through hole 101 and the second through hole 102, the scale range is 0cm-20cm, and the scale is used for determining the side length of the right-angled triangle so as to draw the right-angled triangles with different sizes.

In the fourth embodiment of the utility model, the length scale marks are arranged at the bottom of the ruler and the protractor 1 and are arranged on the ruler, the ruler and the semicircle are integrally formed to form the main body of the multifunctional protractor, and the measuring range of the ruler is 0cm-60 cm.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the scope of the present invention is defined by the claims.

Claims

1. A multifunctional protractor is characterized in that: comprises a protractor (1), a degree comparison ruler (2) and a circle drawing ruler (3), a semicircular first angle line is arranged on the outer side of the protractor (1), a second angle line which is matched with the angle line is arranged on the inner side of the protractor (1), the bottom of the protractor (1) is provided with length scales, the middle part of the protractor (1) is provided with a first through hole (101) and a second through hole (102) which are vertical to each other, the starting end of the degree comparison ruler (2) is rotatably connected to the central point of the protractor (1), the degree comparison ruler (2) is provided with a parallel line (201), the parallel line (201) is provided with length scales, the starting end of the circle drawing ruler (3) is rotatably connected to the bottom of the protractor (1), a plurality of round holes (301) are uniformly distributed on the circle drawing ruler (3), and length scales are arranged on one side of the circle drawing ruler (3).

2. The multifunctional protractor of claim 1, wherein: the starting end of the degree comparison ruler (2) is rotationally connected with the circle center of the protractor (1) through a snap nail.

3. The multifunctional protractor of claim 1, wherein: the first through hole (101) coincides with the 0-degree scale line of the protractor (1), and the second through hole (102) coincides with the 90-degree scale line of the protractor (1).

4. The multifunctional protractor of claim 1, wherein: the outer sides of the first through hole (101) and the second through hole (102) are provided with length scales in parallel.

5. The multifunctional protractor of claim 1, wherein: the 0 ° graduation mark of the second angle line corresponds to the 0 ° graduation mark of the protractor (1), and the 180 ° graduation mark of the second angle line corresponds to the 180 ° graduation mark of the protractor (1).