CN202923227U - Multifunctional mathematical drawing rule - Google Patents

Abstract

The utility model relates to a multifunctional mathematical drawing rule, and mainly aims at providing a mathematical drawing teaching aid which is used by mathematical teachers and integrates multiple functions. The multifunctional mathematical drawing rule is characterized in that the top end of a main rule is connected with a protractor, and a central position of the protractor is hinged with an auxiliary rule; one end of the auxiliary rule is provided with a pointer; the main rule is provided with a rectangular slide groove, an elliptical separation blade which can slide in the groove is arranged inside the slide groove, and the elliptical separation blade is connected with a movable rule with a plurality of circular through holes through a hollow rivet; the right side of the main rule is provided with a hanging plate, the main rule is provided with a handle and a hanging hole, a clamping groove for fixing a conical head is arranged above the handle, and the central hole of the hollow rivet is connected with an insert end of the conical head in a threading way; and the bottom end of the movable rule is of wavy shape. The multifunctional mathematical drawing rule is good in practicability, capable of drawing different geometric figures and convenient to carry and use.

Description

A multifunctional mathematical drawing ruler

technical field

The utility model relates to a drawing teaching aid, in particular to an auxiliary teaching aid for mathematics teachers.

Background technique

At present, in the work of mathematics teaching, in order to teach students to understand and calculate the principles of geometric drawing, drawing tools have become an indispensable teaching tool for mathematics teachers. Teachers usually carry drawing tools such as rulers, triangles, compasses and protractors. The resulting problem is that traditional teaching drawing tools are independent and inconvenient to carry, and often need several tools to be used together when drawing graphics, which is very inconvenient to carry and use. Therefore, designing a teaching drawing tool that integrates multiple functions is a technical problem that needs to be solved at present.

Contents of the invention

In order to solve the existing technical problems raised by the background technology, the utility model provides a multifunctional mathematical drawing ruler, which can be used by teachers to draw various geometric figures, wavy lines and circles, and measure dimensions and angles.

The technical scheme of the utility model is: a multifunctional mathematical drawing ruler, including a main ruler, which is unique in that: the top of the main ruler is connected with a protractor, and an auxiliary ruler is hinged at the center of the protractor; One end of the auxiliary ruler is provided with a pointer; the main ruler is provided with a rectangular chute, the chute is built with an elliptical block that can slide in the groove, and a hollow rivet is connected to the elliptical block with several There is a mobile ruler with a circular through hole; there is a hanging plate on the right side of the main ruler, a handle and a hanging hole are arranged on it, and a slot for fixing the cone head is arranged above the handle, and the central hole of the hollow rivet is connected with the cone The insertion end of the head is threaded; the bottom end of the moving ruler is in the shape of a wavy line. In addition, in order to fix the center of the circle on the blackboard when drawing a circle, the bottom end of the conical head can be in the form of a suction cup.

The utility model has the following beneficial effects: the multifunctional mathematical drawing ruler can measure angles and dimensions, insert the conical head into the central hole of the hollow rivet, put chalk into the circular through hole of the moving ruler, and use the conical head to Set the center of the circle on the blackboard, press and hold the handle, rotate the moving ruler to draw a circle, one end of the moving ruler can draw a wavy line, the protractor cooperates with the auxiliary ruler, you can draw various plane geometric figures, slide the moving ruler parallel in the chute, and you can quickly Drawing parallel lines, this kind of drawing ruler integrates multiple functions and is easy to carry and use.

Description of drawings:

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a schematic structural view of the combination of the chute of the main ruler and the elliptical blocking piece of the utility model.

Fig. 3 is a schematic structural view of the conical head of the present invention.

In the figure 1-main ruler, 2-protractor, 3-auxiliary ruler, 4-pointer, 5-chute, 6-elliptical block, 7-hollow rivet, 8-circular through hole, 9-moving ruler, 10 -Conical head, 11-hanging plate, 12-handle, 13-hanging hole, 14-card slot, 15-conical head fixed suction cup.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1 and Figure 2, this kind of multifunctional mathematical drawing ruler includes a main ruler 1, the top of the main ruler 1 is connected to one end of the protractor 2, and is hinged at the center of the auxiliary ruler 3 through a protruding shaft at the center of the protractor 2 One end of the auxiliary ruler 3 is provided with a pointer 4; the main ruler 1 is provided with a rectangular annular chute 5, and a sliding oval stopper 6 is arranged in the chute 5, and on the oval stopper 6 The mobile ruler 9 with several circular through holes 8 is movable riveted through the hollow rivet 7; the central through hole of the hollow rivet 7 and the insertion end of the conical head 10 are threadedly connected; one end of the movable ruler 9 is provided In the shape of a wavy line.

In addition, further improvements can be made on the basis of the above scheme. The hanging plate 11 on the right side of the main ruler 1 is provided with a handle 12 and a hanging hole 13 , and a slot 14 for holding the conical head 10 is arranged above the handle 12 . In order to fix the center of the circle on the blackboard when drawing a circle, as shown in Figure 3, the bottom end of the conical head is in the form of a suction cup

When in use, the teacher can grab the handle and draw various geometric figures required on the blackboard, press the handle with hand, slide the moving ruler in the chute, and quickly draw parallel lines or wavy lines. When drawing circles , insert the conical head into the hollow rivet hole where the moving ruler is riveted with the circular block, then use chalk to insert the circular through hole on the moving ruler according to the required radius size, position the conical head on the blackboard, and rotate the moving ruler 360 degrees You can draw a circle. The top of the main ruler is equipped with a protractor, which can measure various plane angles. Through the auxiliary ruler hinged with the protractor, various geometric figures can be drawn. There are hanging holes on the hanging plate for easy hanging.

The multifunctional drawing ruler is proved to have good practicability after experimental application. This kind of ruler has the characteristics of simple structure, convenient use and integration of multiple functions, and is small in size and easy to carry and use.

Claims (1)

1. a Multi-functional drawing rule for mathematics, comprise main scale (1), it is characterized in that: the top of described main scale (1) is connected with protractor (2), is hinged with secondary chi (3) at the home position of described protractor (2); One end of described secondary chi (3) is provided with pointer (4); Have rectangular chute (5) on described main scale (1), chute (5) is built-in with an oval catch (6) that can slide in groove, upper by tubular rivet (a 7) connection attachable mechanical stage with several manholes (8) (9) at described oval catch (6); There is link plate (11) on described main scale (1) right side, handle (12) and hanging hole (13) are arranged on it, described handle top is provided with for the fixing draw-in groove (14) of nose cone (10), and the insertion end of the centre bore of described tubular rivet and nose cone (10) is for being threaded; Described attachable mechanical stage (9) bottom is the wave shape.

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