Geometry teaching instrument

Abstract

The utility model relates to the technical field of teaching appliances, in particular to a geometry teaching instrument, which comprises a body and a horizontal bubble bead, the body comprises three ruler bodies with triangular sections, and the included angle between the three ruler bodies is 120 degrees; each ruler body comprises working faces on the two sides, scale marks with different proportions are arranged on the working faces on the two sides, and the scale marks on the working faces of the three ruler bodies are different. One end of the body is provided with a groove for accommodating a horizontal bubble bead, the side surface of the groove is provided with three notches, and the notches are positioned between the scale marks of the adjacent ruler bodies; according to the utility model, the three ruler bodies are adopted, so that a stable triangular structure can be formed, finger grasping instead of existing pressing during teaching is facilitated, and the comfort and the grasping effectiveness are improved; the three ruler bodies are matched with six scale marks with different proportions, the calculation process is reduced, the leveling beads are matched, the inclination problem of drawing is avoided or reduced, and the leveling beads can be ensured to be observed on each surface in combination with the notches.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a geometry teaching instrument. Background Art

[0002] In the learning process of mathematics and engineering, geometry occupies a very important position. General geometry teaching involves proportional enlargement and reduction of geometry. When drawing, it is necessary to make a preliminary estimate to ensure that the proportion of the drawing is correct. Therefore, the proportion needs to be calculated every time a drawing is drawn. Once the proportion is not a fixed proportion, it will lead to calculation difficulties, making the teaching time longer, while the amount of content remains unchanged, which is not conducive to student learning. In order to facilitate the study of geometry, various tools have been developed in the prior art, but most of these tools are huge in size, occupy a large space, are not convenient to carry, and have poor practicality. Therefore, a more compact and convenient geometry teaching instrument is needed to facilitate teaching. Utility Model Content

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide a geometry teaching instrument with a smaller volume.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A geometry teaching instrument, comprising a body and a horizontal bubble bead, wherein the body comprises three ruler bodies with triangular cross sections, and the angle between the three ruler bodies is 120°;

[0006] The ruler body comprises working surfaces on two sides, and scale lines of different proportions are arranged on the working surfaces on the two sides, and the scale lines of the working surfaces of the three ruler bodies are different;

[0007] A groove for accommodating a horizontal bubble bead is provided on one end of the body, and three notches are provided on the side surface of the groove, wherein the notches are located between scale lines of adjacent ruler bodies.

[0008] Furthermore, the directions of the scale lines on the working surfaces on both sides of the ruler body are opposite; and the directions of adjacent scale lines are opposite.

[0009] Furthermore, the front end of the scale line is marked with a proportional value.

[0010] Furthermore, the cross section of the ruler body is an acute triangle.

[0011] Furthermore, long grooves are provided between adjacent ruler bodies.

[0012] Furthermore, a pen is arranged in the elongated groove.

[0013] Furthermore, a magnet is provided on the pen, and the body is made of a metal that can be adsorbed by the magnet.

[0014] Furthermore, the edge of the body is chamfered.

[0015] Furthermore, the surface of the body is frosted.

[0016] Furthermore, a mounting groove is provided on the other end of the body relative to the groove;

[0017] The geometry teaching instrument also includes a laser pointer, which is installed in the installation groove.

[0018] The beneficial effects of the utility model are as follows: by adopting three rulers, grasping one of the rulers, and pressing the other two rulers as the bottom on the blackboard or paper for drawing, a stable triangular structure can be formed, which is convenient for finger grasping during teaching instead of the existing pressing, and improves the comfort and effectiveness of grasping; and with a total of six scale lines of different proportions on the three rulers, scale lines of different proportions can be applied intuitively, reducing the calculation process, thereby improving efficiency, and in combination with horizontal bubble beads, when drawing solid geometry, the horizontal bubble beads can be used to determine the angle for drawing, avoiding or reducing the problem of tilting the drawing, and combined with the notch, it can be ensured that the horizontal bubble beads can be observed on each surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a structural schematic diagram of a geometry teaching instrument according to a specific implementation mode of the utility model;

[0020] Figure 2 The figure shows an exploded structural schematic diagram of a geometry teaching instrument according to a specific implementation mode of the utility model;

[0021] Figure 3 The figure shows a schematic diagram of the structure of a body of a geometry teaching instrument according to a specific implementation mode of the utility model;

[0022] Explanation of the numbers: 1. Main body; 2. Level bubble; 3. Ruler body; 4. Scale lines; 5. Scale value; 6. Long slot; 7. Pen; 8. Installation slot. DETAILED DESCRIPTION

[0023] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0024] Please refer to Figures 1 to 3 As shown, a geometry teaching instrument of the utility model comprises a body 1 and a horizontal bubble bead 2, wherein the body 1 comprises three ruler bodies 3 with triangular cross sections, and the angle between the three ruler bodies 3 is 120°;

[0025] The ruler body 3 includes working surfaces on two sides, and the working surfaces on the two sides are provided with scale lines 4 of different proportions, and the scale lines 4 of the working surfaces of the three ruler bodies 3 are different;

[0026] A groove for accommodating the horizontal bubble bead 2 is formed on one end of the main body 1 , and three notches are formed on the side surface of the groove, wherein the notches are located between the scale lines 4 of adjacent ruler bodies 3 .

[0027] From the above description, it can be seen that by using three ruler bodies 3, grasping one of the ruler bodies 3, and pressing the other two ruler bodies 3 as the bottom on the blackboard or paper to draw, a stable triangular structure can be formed, which is convenient for finger grasping during teaching instead of the existing pressing, thereby improving the comfort and effectiveness of grasping; and with a total of six scale lines 4 of different proportions on the three ruler bodies 3, scale lines 4 of different proportions can be applied very intuitively, reducing the calculation process and thus improving efficiency. In combination with the horizontal bubble beads 2, when drawing solid geometry, the horizontal bubble beads 2 can be used to determine the angle for drawing, thereby avoiding or reducing the problem of tilting the drawing, and combined with the notches, it can be ensured that the horizontal bubble beads 2 can be observed on each surface.

[0028] Furthermore, the directions of the scale marks 4 on the working surfaces on both sides of the ruler body 3 are opposite; and the directions of adjacent scale marks 4 are opposite.

[0029] From the above description, it can be known that the directions of the scale lines 4 on the working surfaces of both sides of the ruler body 3 are opposite, so that when in use, the scale lines 4 can still be in the same direction after being turned over; the same applies to the opposite directions of adjacent scale lines 4.

[0030] Furthermore, the front end of the scale line 4 is marked with a proportional value 5.

[0031] From the above description, it can be seen that the proportion corresponding to each scale line 4 can be determined through the proportion value 5, thereby improving the use effect.

[0032] Furthermore, the cross section of the ruler body 3 is an acute triangle.

[0033] It can be seen from the above description that the acute-angled triangle-shaped ruler body 3 can enable the main body 1 to form a Y-shaped structure, which is convenient for gripping.

[0034] Furthermore, a long groove 6 is provided between adjacent ruler bodies 3 .

[0035] Furthermore, a pen 7 is arranged in the elongated groove 6 .

[0036] Furthermore, the pen 7 is provided with a magnet, and the body 1 is made of a metal that can be attracted by the magnet. The body is made of stainless steel.

[0037] Furthermore, the edge of the body 1 is chamfered.

[0038] It can be seen from the above description that the chamfered body 1 can prevent sharp edges from scratching paper, blackboard or users.

[0039] Furthermore, the surface of the body 1 is frosted.

[0040] From the above description, it can be seen that the frosted surface can improve the grip feel and avoid slipping caused by sweating.

[0041] Furthermore, a mounting groove 8 is provided on the other end of the body 1 relative to the groove;

[0042] The geometry teaching instrument further comprises a laser pointer, which is installed in the installation slot 8 .

[0043] From the above description, it can be known that the laser pointer can be used to indicate and facilitate angle alignment.

[0044] Embodiment 1

[0045] A geometry teaching instrument, comprising a body 1 and a horizontal bubble bead 2, wherein the body 1 comprises three ruler bodies 3 with triangular cross sections, and the angle between the three ruler bodies 3 is 120°;

[0046] The ruler body 3 includes working surfaces on two sides, and the working surfaces on the two sides are provided with scale lines 4 of different proportions, and the scale lines 4 of the working surfaces of the three ruler bodies 3 are different;

[0047] A groove for accommodating the horizontal bubble bead 2 is formed on one end of the main body 1 , and three notches are formed on the side surface of the groove, wherein the notches are located between the scale lines 4 of adjacent ruler bodies 3 .

[0048] The directions of the scale marks 4 on the working surfaces on both sides of the ruler body 3 are opposite; the directions of adjacent scale marks 4 are opposite.

[0049] The front end of the scale line 4 is marked with a proportional value 5 .

[0050] The cross section of the ruler body 3 is an acute triangle.

[0051] Long grooves 6 are provided between adjacent ruler bodies 3 .

[0052] A pen 7 is arranged in the elongated groove 6 .

[0053] The pen 7 is provided with a magnet, and the body 1 is made of a metal that can be attracted by the magnet.

[0054] The edges of the body 1 are chamfered.

[0055] The surface of the body 1 is frosted.

[0056] The body 1 is provided with a mounting groove 8 at the other end thereof opposite to the groove;

[0057] The geometry teaching instrument further comprises a laser pointer, which is installed in the installation slot 8 .

[0058] Embodiment 2

[0059] A geometry teaching instrument, comprising a body 1 and a horizontal bubble bead 2, wherein the body 1 comprises three ruler bodies 3 with triangular cross sections, and the angle between the three ruler bodies 3 is 120°;

[0060] The ruler body 3 includes working surfaces on two sides, and the working surfaces on the two sides are provided with scale lines 4 of different proportions, and the scale lines 4 of the working surfaces of the three ruler bodies 3 are different;

[0061] A groove for accommodating the horizontal bubble bead 2 is formed on one end of the main body 1 , and three notches are formed on the side surface of the groove, wherein the notches are located between the scale lines 4 of adjacent ruler bodies 3 .

[0062] The directions of the scale marks 4 on the working surfaces on both sides of the ruler body 3 are opposite; the directions of adjacent scale marks 4 are opposite.

[0063] The front end of the scale line 4 is marked with a proportional value 5 .

[0064] The edges of the body 1 are chamfered.

[0065] The surface of the body 1 is frosted.

[0066] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A geometry teaching instrument, characterized in that: It comprises a main body and a horizontal bubble bead, wherein the main body comprises three ruler bodies with triangular cross sections, and the angle between the three ruler bodies is 120°; The ruler body comprises working surfaces on two sides, and scale lines of different proportions are arranged on the working surfaces on the two sides, and the scale lines of the working surfaces of the three ruler bodies are different; A groove for accommodating a horizontal bubble bead is provided on one end of the body, and three notches are provided on the side surface of the groove, wherein the notches are located between scale lines of adjacent ruler bodies.

2. The geometry teaching instrument according to claim 1, characterized in that: The directions of the scale lines on the working surfaces on both sides of the ruler body are opposite; the directions of adjacent scale lines are opposite.

3. The geometry teaching instrument according to claim 1, characterized in that: The front end of the scale line is marked with a proportional value.

4. The geometry teaching instrument according to claim 1, characterized in that: The cross section of the ruler body is an acute triangle.

5. The geometry teaching instrument according to claim 4, characterized in that: Long grooves are arranged between adjacent ruler bodies.

6. The geometry teaching instrument according to claim 5, characterized in that: A pen is arranged in the elongated groove.

7. The geometry teaching apparatus according to claim 6, characterized in that: The pen is provided with a magnet, and the body is made of stainless steel.

8. The geometry teaching instrument according to claim 1, characterized in that: The edge of the body is chamfered.

9. The geometry teaching instrument according to claim 1, characterized in that: The surface of the body is frosted.

10. The geometry teaching instrument according to claim 1, characterized in that: The body is provided with a mounting groove on the other end thereof opposite to the groove; The geometry teaching instrument also includes a laser pointer, which is installed in the installation groove.

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