CN209869857U - Combined drawing tool for mathematics teaching - Google Patents

Abstract

The utility model discloses a combined drawing tool for mathematical education, which belongs to the field of teaching equipment, and the technical scheme is characterized in that the combined drawing tool for mathematical education comprises a ruler A, a ruler B and a radian ruler, wherein the ruler A is rotationally connected with the ruler B through a rotating shaft A, the surface of the ruler A is provided with a drawing groove, the back of the ruler A is provided with the radian ruler, the radian ruler is connected with the ruler A through the rotating shaft B, the surface of the radian ruler is provided with radian scale marks, the surface of the ruler B is fixedly connected with a telescopic rod, and the top end of the telescopic rod is fixedly connected with a chalk groove; two rulers are connected together through a rotating shaft, a radian ruler is arranged on the back of each ruler, the angle can be measured through the radian ruler, a telescopic rod is arranged on the surface of one ruler, a chalk groove is formed in the top end of the telescopic rod, chalks can be placed in the chalk groove, the ruler with the chalks placed is rotated through the rotating shaft, and the ruler can be used as a compass.

Description

Combined drawing tool for mathematics teaching

Technical Field

The utility model relates to a teaching equipment field, in particular to mathematics teaching is with combination drawing instrument.

Background

At present, teachers often need to draw triangles, circles, polygons and the like on a blackboard when teaching mathematics, although some multifunctional drawing tools appear in the prior art, the blackboard is vertical, when drawing the figures, the drawing tools need to be pressed by hands to draw the figures, the figures are easy to slip, and the figures are inconvenient to place when the drawing tools are not needed.

SUMMERY OF THE UTILITY MODEL

For solving the problem that proposes among the above-mentioned background art, the utility model provides a mathematics teaching is with combination drawing instrument has simple structure, uses portable characteristics.

The utility model discloses a realize like this, a combination instrument of drawing is used in mathematical education, including ruler A, ruler B and radian chi, ruler A with ruler B rotates through pivot A to be connected, ruler A surface is equipped with the drawing groove, the ruler A back is equipped with the radian chi, the radian chi with connect through pivot B between the ruler A, radian chi surface is equipped with the radian scale mark, ruler B fixed surface connects the telescopic link, telescopic link top end fixedly connected with chalk groove.

Preferably, the ruler A and the ruler B are the same in width, and scale marks are arranged on the surfaces of the ruler A and the ruler B.

Preferably, the radian ruler comprises a ruler body A and a ruler body B which are mutually nested and connected, and the bottom ends of the ruler body A and the ruler body B are rotatably connected with the rotating shaft B through a connecting plate.

Preferably, the number of pattern grooves 11 is three, and the pattern grooves are triangular, rectangular and pentagonal.

Preferably, a rotating shaft cap is arranged at the top end of the rotating shaft A, and the radius of the bottom surface of the rotating shaft cap is larger than that of the top end of the rotating shaft A.

Preferably, a magnet is arranged at the bottom end of the rotating shaft A and fixedly connected with the rotating shaft A, and the magnet is rectangular.

Preferably, the outer wall of the rotating shaft A is provided with a partition plate, and the partition plate is fixedly connected with the rotating shaft A.

Compared with the prior art, the beneficial effects of the utility model are that:

1. two rulers are connected together through a rotating shaft, a radian ruler is arranged on the back of the ruler, the angle can be measured through the radian ruler, a telescopic rod is arranged on the surface of one ruler, a chalk groove is formed in the top end of the telescopic rod, chalks can be placed in the chalk groove, the ruler with the chalks placed is rotated through the rotating shaft, the ruler can be used as a compass, compasses, the radian ruler and the ruler are integrated, and the ruler is more in function and convenient to use.

2. The ruler surface is provided with three figure grooves, the figure grooves are triangular, rectangular and pentagonal, the three figures can be directly drawn, the magnet is arranged at the bottom end of the rotating shaft, the ruler can be adsorbed on a blackboard through the magnet, and the force of pressing the ruler by a user can be reduced during drawing.

3. The two rulers can rotate freely through the rotating shaft, and can rotate after use, so that the two rulers are overlapped together, the space is reduced, and the carrying is convenient.

Drawings

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a view of the structure of the radian ruler of the utility model;

FIG. 3 is a structural view of a rotating shaft A of the present invention;

fig. 4 is a schematic view of the folded state of the present invention.

In the figure, 1, a ruler A; 2. a straightedge B; 3. a rotating shaft A; 4. a radian ruler; 11. a figure-shaped groove; 12. scale lines; 21. a telescopic rod; 31. a spindle cap; 32. a magnet; 33. a partition plate; 41. radian scale lines; 42. a rotating shaft B; 43. a connecting plate; 44. a ruler body A; 45. a ruler body B; 211. a chalk groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a mathematics teaching is with combination instrument of drawing, including ruler A1, ruler B2 and radian chi 4, ruler A1 rotates through pivot A3 with ruler B2 to be connected, ruler A1 surface is equipped with picture groove 11, ruler A1 back is equipped with radian chi 4, be connected through pivot B42 between radian chi 4 and the ruler A1, radian chi 4 surface is equipped with radian scale mark 41, ruler B2 fixed surface connects telescopic link 21, telescopic link 21 top fixedly connected with chalk groove 211.

In this embodiment: ruler A1 is rotatably connected with ruler B2 through rotating shaft A3, ruler A1 and ruler B2 are connected together through rotating shaft A3, ruler A1 and ruler B2 can rotate up and down through rotating shaft A3, drawing groove 11 is arranged on the surface of ruler A1, triangle, rectangle and pentagon can be met during drawing, the drawing can be directly drawn through drawing groove 11, radian ruler 4 is arranged on the back of ruler A1, radian ruler 4 is connected with ruler A1 through rotating shaft B42, angle can be measured through radian ruler 4, drawing can be more accurate, radian ruler 4 is arranged on the back of ruler A1, rotation between ruler A1 and ruler B2 cannot be hindered, radian scale lines 41 are arranged on the surface of radian scale 4, angle is determined by observing the position of radian scale lines 41, ruler B2 is fixedly connected with telescopic rod 21, chalk groove 211 is fixedly connected to the top end of telescopic rod 21, chalk is placed inside chalk groove 211, length is adjusted through telescopic rod 21, the ruler B2 can be rotated to be used as a compass.

Specifically, the widths of the straight edge A1 and the straight edge B2 are the same, and the surfaces of the straight edge A1 and the straight edge B2 are provided with scale marks 12; the ruler A1 and the ruler B2 can rotate up and down through the rotating shaft A3, when the ruler A1 and the ruler B2 are stored, the ruler A1 and the ruler B2 are overlapped, and the widths of the ruler A1 and the ruler B2 are the same, so that the widths of the overlapped ruler A and the ruler B2 are not inconsistent.

Specifically, the radian ruler 4 comprises a ruler body A44 and a ruler body B45 which are mutually nested and connected, and the bottom ends of the ruler body A44 and the ruler body B45 are rotatably connected with a rotating shaft B42 through a connecting plate 43; when the ruler is not used, the ruler body A44 can be put into the ruler body B45 by rotating the connecting plate 43, and when the ruler is used, the ruler body B45 is pulled outwards by rotating the connecting plate 43, so that the ruler body A44 is exposed, and the ruler is convenient to use and does not occupy space.

Specifically, the number of the pattern grooves 11 is three, and the pattern grooves are triangular, rectangular and pentagonal; during drawing, the triangular, rectangular and pentagonal shapes can be encountered, and can be directly drawn through the graphic groove 11, so that the drawing is convenient and fast.

Specifically, the top end of the rotating shaft A3 is provided with a rotating shaft cap 31, and the radius of the bottom surface of the rotating shaft cap 31 is larger than that of the top end of the rotating shaft A3; the pivot cap 31 is fixed to the top end of the pivot A3 to prevent the straight edge B2 from coming off the pivot A3 when the ruler is rotated.

Specifically, the magnet 32 is arranged at the bottom end of the rotating shaft A3, the magnet 32 is fixedly connected with the rotating shaft A3, and the magnet 32 is rectangular; the blackboard is vertical, the ruler can be adsorbed on the blackboard through the magnet 32, and the force of pressing the ruler by a user can be reduced during drawing.

Specifically, the outer wall of the rotating shaft A3 is provided with a partition plate 33, and the partition plate 33 is fixedly connected with the rotating shaft A3; the rotating shaft A3 is divided into an upper part and a lower part by a partition plate 33, and the upper part and the lower part are respectively connected with a ruler A1 and a ruler B2.

The utility model discloses a theory of operation and use flow: when the ruler is used, a proper position for drawing is found firstly, the ruler is adsorbed on the surface of a blackboard through the magnet 32, the ruler is pressed by hands, the ruler B2 is rotated to be in a horizontal position with the ruler A1 through the rotating shaft A3, drawing is started through chalk, when an angle needs to be measured and a drawing needs to be drawn, the ruler B45 is pulled outwards through the rotating connecting plate 43, the ruler A44 is exposed, the angle is determined through observing the position of the radian scale mark 41, after the measurement is finished, the ruler A44 is collected into the ruler B45 through the rotating connecting plate 43, when a circle needs to be drawn, the magnet 32 is adsorbed at the position of the center of the circle, the chalk is fixed in the chalk groove 211, the length is adjusted through the telescopic rod 21, the correct position is adjusted, and the ruler B2 is rotated to make a circular motion, so that a needed circle can be drawn.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The utility model provides a mathematics teaching is with combination instrument of drawing, includes ruler A (1), ruler B (2) and radian chi (4), its characterized in that: ruler A (1) with ruler B (2) rotates through pivot A (3) to be connected, ruler A (1) surface is equipped with picture groove (11), ruler A (1) back is equipped with radian chi (4), radian chi (4) with connect through pivot B (42) between ruler A (1), radian chi (4) surface is equipped with radian scale mark (41), ruler B (2) fixed surface connects telescopic link (21), telescopic link (21) top fixedly connected with chalk groove (211).

2. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: the ruler A (1) and the ruler B (2) are the same in width, and scale marks (12) are arranged on the surfaces of the ruler A and the ruler B.

3. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: the radian ruler (4) comprises a ruler body A (44) and a ruler body B (45) which are mutually nested and connected, and the bottom ends of the ruler body A (44) and the ruler body B (45) are rotatably connected with the rotating shaft B (42) through a connecting plate (43).

4. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: the number of the figure grooves (11) is three, and the figure grooves are triangular, rectangular and pentagonal.

5. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: the top end of the rotating shaft A (3) is provided with a rotating shaft cap (31), and the radius of the bottom surface of the rotating shaft cap (31) is larger than that of the top end of the rotating shaft A (3).

6. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: pivot A (3) bottom is equipped with magnet (32), magnet (32) with pivot A (3) fixed connection, magnet (32) are the rectangle.

7. A combination drawing tool for mathematics teaching as claimed in claim 1, wherein: the outer wall of the rotating shaft A (3) is provided with a partition plate (33), and the partition plate (33) is fixedly connected with the rotating shaft A (3).