CN215397914U

CN215397914U - Mathematics drawing tool

Info

Publication number: CN215397914U
Application number: CN202121695167.6U
Authority: CN
Inventors: 胡海燕; 张拥萍
Original assignee: ZHANGJIAKOU UNIVERSITY
Current assignee: ZHANGJIAKOU UNIVERSITY
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-04
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a mathematical drawing tool, comprising: the main scale is provided with strip-shaped holes in a penetrating mode along the length direction, one end of each strip-shaped hole is aligned with a zero scale mark of the main scale, and the other end of each strip-shaped hole is aligned with a maximum scale mark of the main scale; the limiting plug is vertically arranged in the strip-shaped hole and is detachably connected with the strip-shaped hole; one end of the auxiliary ruler is hinged with one end of the main ruler; and the protractor is fixedly arranged on the side wall of one end of the main ruler, which is hinged with the auxiliary ruler. According to the utility model, the limiting plug is matched with the strip-shaped hole, when a circle needs to be drawn, the limiting plug is only required to be arranged in the strip-shaped hole and is aligned with the corresponding scale mark, a chalk or other pens penetrates into the strip-shaped hole and abuts against the limiting plug by taking the zero scale mark of the main ruler as the center, and the circle can be drawn by rotating the main ruler; when needing the drawing angle, open certain angle with vice chi and main scale, can carry out the drawing angle, this is novel will draw circle, drawing angle and draw three kinds of functions of straight line and gather on an instrument, convenient to use, and simple structure.

Description

Mathematics drawing tool

Technical Field

The utility model relates to the technical field of mathematics education. More particularly, the present invention relates to a mathematical drawing tool.

Background

Mathematics mr need use appurtenance to draw on the blackboard in the teaching, for example draw the angle of different angles, draw the circle, draw the straight line etc. need use different instruments when drawing different figures, for example the angle of drawing need use the protractor, draw the circle need use the compasses, draw the straight line and need use the ruler, the instrument is too many, uses inconveniently.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.

The utility model also aims to provide a mathematical drawing tool which has three functions of drawing circles, drawing angles and drawing straight lines, and has simple structure and convenient use.

To achieve these objects and other advantages in accordance with the purpose of the utility model, there is provided a mathematical drawing tool including:

the main scale is provided with strip-shaped holes in a penetrating mode along the length direction, one end of each strip-shaped hole is aligned with a zero scale mark of the main scale, and the other end of each strip-shaped hole is aligned with a maximum scale mark of the main scale;

the limiting plug is columnar, is vertically arranged in the strip-shaped hole and is detachably connected with the strip-shaped hole;

one end of the auxiliary ruler is hinged with one end of the main ruler;

and the protractor is fixedly arranged on the side wall of one end of the main ruler, which is hinged with the auxiliary ruler, and is used for measuring the included angle between the auxiliary ruler and the main ruler.

Preferably, the auxiliary ruler is provided with an auxiliary hole in a penetrating manner, and when the auxiliary ruler is overlapped with the main ruler, the auxiliary hole is overlapped with the strip-shaped hole.

Preferably, the top surface of the main scale is provided with a containing groove, the containing groove is arranged along the length direction of the main scale, the bottom surface of the containing groove extends downwards to the lower part of the strip-shaped hole, one end of the auxiliary scale is hinged with two side walls of the containing groove arranged along the width direction of the containing groove, and when the main scale and the auxiliary scale are overlapped, the auxiliary scale is positioned in the containing groove.

Preferably, one end of the main ruler is provided with a belt, the length of the belt is not less than that of the main ruler, one end of the belt is fixedly connected with the main ruler, and the other end of the belt is fixedly connected with the limiting plug.

Preferably, a protrusion is fixedly arranged on the top surface of the auxiliary scale, and when the auxiliary scale is overlapped with the main scale, the end part of the protrusion far away from the auxiliary scale is positioned outside the accommodating groove.

Preferably, the top of the protractor is flush with the top surface of the main scale.

Preferably, a rotating shaft is rotatably arranged on the zero scale mark or the extension line of the main scale, two ends of the rotating shaft slightly protrude out of the surface of the main scale, and the main scale can rotate relative to the rotating shaft; when drawing a circle, the main scale is used as the center, a chalk or other pens penetrate into the strip-shaped holes and are abutted against the limiting plugs, and the main scale is rotated to draw the circle. And the design of pivot can make things convenient for the finger to press gently and form circularly on the plane of waiting to draw the circle, then swing the main scale and can draw the circle at pivot one end, pivot other end top. The both ends of pivot can set up the rubber layer, and the rubber layer makes to press more comfortable on the one hand, and on the other hand increases and waits to draw the planar friction of circle, prevents the pivot slip skew.

The utility model at least comprises the following beneficial effects:

the main ruler and the auxiliary ruler form a folding ruler, the main ruler is provided with a strip-shaped hole, the strip-shaped hole is matched with a limiting plug, when a circle needs to be drawn, the limiting plug is only required to be arranged in the strip-shaped hole, the limiting plug is aligned with a corresponding scale mark, a chalk or other pens penetrates into the strip-shaped hole and abuts against the limiting plug by taking the zero scale mark of the main ruler as the center, and the circle can be drawn by rotating the main ruler; when needing the drawing angle, open certain angle with vice chi and main scale, can carry out the drawing angle, this is novel will draw circle, drawing angle and draw three kinds of functions of straight line and gather on an instrument, convenient to use, and simple structure.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

Fig. 1 is a schematic structural diagram of a mathematical drawing tool according to one embodiment of the present invention.

Reference numerals: the measuring tool comprises a main ruler 1, strip-shaped holes 2, a limiting plug 3, an auxiliary ruler 4, a protractor 5, an accommodating groove 6, a belt 7 and a protrusion 8.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1, the present invention provides a mathematical drawing tool comprising:

the main scale 1 is provided with strip-shaped holes 2 in a penetrating mode along the length direction, one ends of the strip-shaped holes 2 are aligned with zero scale marks of the main scale 1, and the other ends of the strip-shaped holes 2 are aligned with the maximum scale marks of the main scale 1;

the limiting plug 3 is columnar, is vertically arranged in the strip-shaped hole 2 and is detachably connected with the strip-shaped hole;

one end of the auxiliary ruler 4 is hinged with one end of the main ruler 1;

and the protractor 5 is fixedly arranged on the side wall of one end of the main scale 1, which is hinged with the auxiliary scale 4, and is used for measuring the included angle between the auxiliary scale 4 and the main scale 1.

In the technical scheme, the drawing tool comprises a main scale 1, a limiting plug 3, an auxiliary scale 4 and a protractor 5, wherein the main scale 1 can be used for drawing a straight line, a strip-shaped hole 2 is formed in the main scale 1, as shown in fig. 1, the strip-shaped hole 2 is set to be not smaller than the measurement length of the main scale 1, and the width of the strip-shaped hole 2 is not limited by the utility model; the limiting plug 3 is a columnar plug and mainly used for limiting a pen used for drawing, the limiting plug 3 can be made of flexible jelly-shaped materials, and when the limiting plug is used, the limiting plug 3 is plugged into the strip-shaped hole 2 and is not easy to move randomly but can be pulled out; and the auxiliary ruler 4 is hinged with the main ruler 1, and the auxiliary ruler 4 is matched with the protractor 5 for angle drawing.

The main scale 1 and the auxiliary scale 4 form a folding scale, the main scale 1 is provided with a strip-shaped hole 2, the strip-shaped hole 2 is matched with a limiting plug 3, when a circle needs to be drawn, the limiting plug 3 is only required to be arranged in the strip-shaped hole 2, the limiting plug 3 is aligned with a corresponding scale mark, a chalk or other pens penetrate into the strip-shaped hole 2 and abut against the limiting plug 3 by taking the zero scale mark of the main scale 1 as the center, and the circle can be drawn by rotating the main scale 1; when needing the drawing angle, open certain angle with vice chi 4 and main scale 1, can carry out the drawing angle, this is novel will draw circle, drawing angle and draw three kinds of functions of straight line and gather on an instrument, convenient to use, and simple structure.

In another technical scheme, an auxiliary hole is formed in the auxiliary ruler 4 in a penetrating mode, when the auxiliary ruler 4 is overlapped with the main ruler 1, the auxiliary hole is overlapped with the strip-shaped hole 2, the effect that the auxiliary hole is overlapped with the strip-shaped hole 2 is shown in figure 1, the auxiliary ruler 4 can be limited by plugging the limiting plug 3 in the strip-shaped hole 2 and the auxiliary hole, the auxiliary ruler 4 is enabled to be overlapped with the main ruler 1 to form a ruler for drawing circles, and the influence of the auxiliary ruler 4 during circle drawing is avoided.

In another kind of technical scheme, the top surface of main scale 1 is equipped with storage tank 6, storage tank 6 is followed the length direction of main scale 1 sets up, storage tank 6's bottom surface downwardly extending extremely the below of banding hole 2, the one end of vice chi 4 with storage tank 6's the both sides wall that sets up along its width direction is articulated, and works as when main scale 1 overlaps with vice chi 4, vice chi 4 is located in storage tank 6, this novel shape that does not limit storage tank 6 as long as can hold vice chi 4 can, can save space when not using in putting into storage tank 6 with vice chi 4, be convenient for place.

In another technical scheme, a belt 7 is arranged at one end of the main scale 1, the length of the belt 7 is not less than that of the main scale 1, one end of the belt 7 is fixedly connected with the main scale 1, the other end of the belt 7 is fixedly connected with the limiting plug 3, and the belt 7 is used for limiting the limiting plug 3 and avoiding the loss of the limiting plug 3.

In another technical scheme, a protrusion 8 is fixedly arranged on the top surface of the auxiliary scale 4, when the auxiliary scale 4 overlaps the main scale 1, the end portion of the protrusion 8, which is far away from the auxiliary scale 4, is located outside the accommodating groove 6, and the protrusion 8 is used for facilitating taking out the auxiliary scale 4 from the accommodating groove 6.

In another solution, the top of the protractor 5 is flush with the top surface of the main scale 1, as shown in fig. 1, for the purpose of facilitating accurate measurement of the angle between the main scale 1 and the secondary scale 4.

In another technical scheme, a rotating shaft is rotatably arranged on the zero scale mark or the extension line of the main scale 1, two ends of the rotating shaft slightly protrude out of the surface of the main scale 1, and the main scale 1 can rotate relative to the rotating shaft; when drawing a circle, the main ruler 1 is used as a center, chalk or other pens penetrate into the strip-shaped holes 2 and are abutted against the limiting plugs 3, and the main ruler 1 is rotated to draw a circle. And the design of pivot can make things convenient for the finger to press gently and form circularly on the plane of waiting to draw the circle, then swing main scale 1 can draw the circle at pivot one end, pivot other end top. The both ends of pivot can set up the rubber layer, and the rubber layer makes on the one hand to press more comfortablely, and on the other hand increases and waits to draw the planar friction of circle, prevents that the pivot from sliding the skew, draws the circle also more accurately.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the mathematical drawing tool of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. Mathematical drawing tool, characterized in that, includes:

one end of the auxiliary ruler is hinged with one end of the main ruler;

2. The mathematical drawing tool of claim 1 wherein the secondary scale has a secondary hole therethrough, the secondary hole overlapping the bar hole when the secondary scale overlaps the primary scale.

3. The tool for drawing mathematics as claimed in claim 2, wherein the top surface of said main scale is provided with a receiving groove, said receiving groove is arranged along the length direction of said main scale, the bottom surface of said receiving groove extends downward below said strip-shaped hole, one end of said auxiliary scale is hinged with the two side walls of said receiving groove arranged along the width direction thereof, and when said main scale and auxiliary scale are overlapped, said auxiliary scale is positioned in said receiving groove.

4. The mathematical drawing tool of claim 3 wherein one end of the main scale is provided with a belt, the belt has a length no less than the length of the main scale, one end of the belt is fixedly connected with the main scale, and the other end of the belt is fixedly connected with the limit plug.

5. The mathematical drawing tool of claim 3 wherein the top surface of the secondary scale is fixedly provided with a protrusion, and when the secondary scale is overlapped with the primary scale, the end of the protrusion away from the secondary scale is located outside the receiving groove.

6. The mathematical drawing tool of claim 3 wherein the top of the protractor is flush with the top surface of the main scale.