Geometric drawing teaching aid

Abstract

The utility model relates to the technical field of teaching aids, in particular to a geometric drawing teaching aid which comprises an angle scale and a fixed rotating shaft, the fixed rotating shaft is fixedly arranged at the center of the angle scale in a penetrating mode, a drawing ruler is clamped on the right side of the angle scale in a sleeved mode, and the left end of the drawing ruler is connected to the fixed rotating shaft and can rotate along the fixed rotating shaft. A suction cup is arranged on the rear side of the angle scale and fixedly connected with one end of the fixed rotating shaft. The multifunctional drawing tool integrates the functions of various drawing tools, can be used for drawing various geometric figures, is convenient to use and high in functionality, can be adsorbed on a plane during drawing through the sucker, is convenient to fix and can ensure the drawing precision, the drawing process is simplified, the operation difficulty is reduced, and the drawing precision and efficiency are improved.

Description

Technical Field

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

[0002] Geometric drawing aids are tools used to draw geometric figures. There are many types of these tools, and common ones include drawing boards, compasses, T-squares, etc. These tools are often used in high school mathematics geometry teaching. By using these teaching aids, geometric figures can be drawn and understood more accurately, which helps to learn and apply geometric knowledge.

[0003] Geometry is an important part of high school mathematics and is of great significance for improving students' spatial imagination and logical thinking ability. However, existing geometric drawing teaching aids are mostly simple rulers, compasses, etc. Different types of drawing teaching aids are required for different geometric figures. The teaching process requires carrying a variety of drawing teaching aids, which is not convenient to carry. In addition, the drawing operation is cumbersome and the precision is low, which is not conducive to students' efficient and accurate mastery of geometric knowledge. Utility Model Content

[0004] In view of the existing deficiencies, the utility model provides a geometry drawing teaching aid, which solves the problem that the geometry drawing teaching aids in the prior art are mostly simple rulers, compasses, etc., different types of drawing teaching aids are required for different geometric figures, and the teaching process needs to carry a variety of drawing teaching aids, which is not convenient to carry, and the drawing has the problems of cumbersome operation and low precision.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A geometric drawing teaching aid comprises an angle disc and a fixed rotating shaft, wherein the fixed rotating shaft is fixedly provided through the center of the angle disc, a drawing ruler is clamped on the right side of the angle disc, the left end of the drawing ruler is connected to the fixed rotating shaft and can rotate along the drawing ruler, a drawing component is arranged on the right side inside the drawing ruler, a suction cup is arranged on the rear side of the angle disc, and the suction cup is fixedly connected to one end of the fixed rotating shaft.

[0007] Furthermore, a through groove is vertically penetrated inside the drawing ruler, a slide groove is longitudinally penetrated on the right side inside the drawing ruler, and the drawing component is placed inside the slide groove.

[0008] Furthermore, angle scale lines are engraved on the front side of the angle disk near the edge, a viewport is opened on the left side inside the drawing ruler, and the position of the viewport corresponds to the position of the angle scale lines.

[0009] Furthermore, length scale lines are engraved on the upper and lower sides of the front and rear surfaces of the drawing ruler near the edges.

[0010] Furthermore, the drawing component includes a fixed sleeve, a metal slide, a plastic spring and an ear plate, the fixed sleeve is arranged inside the slide groove, and ear plates are fixed on the upper and lower sides of the fixed sleeve ring surface, and an M-shaped plastic spring is fixed on the front side of the ear plate. A metal slide with a smooth surface is pasted on the front side of the plastic spring, and the surface of the metal slide is in contact with the inner wall of the through groove.

[0011] Furthermore, the rear side of the inner wall of the through groove and the back side of the ear plate are engraved with teeth, and the ear plate is meshed and connected with the drawing ruler through the teeth.

[0012] Furthermore, a hanging ring is fixedly provided at the right end of the drawing ruler.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model integrates the functions of multiple drawing tools, can draw a variety of geometric figures, is easy to use, and has strong functionality. The suction cup can be adsorbed on the plane during drawing, which is convenient for fixation and can ensure the accuracy of drawing. It not only simplifies the drawing process and reduces the difficulty of operation, but also improves the accuracy and efficiency of drawing.

[0015] 2. The utility model can connect chalk to carry out drawing work through the drawing component provided, which can ensure that the chalk is stable during the drawing process and can ensure that accurate and clear lines are obtained during the geometric drawing process, thereby significantly improving the drawing quality and efficiency.

[0016] 3. The rear side of the inner wall of the through slot and the back of the ear plate are engraved with teeth, and the ear plate and the drawing ruler are connected by the teeth. This design can ensure the stable connection between the ear plate and the drawing ruler, ensure the stability of the position of the drawing component, prevent the drawing component from being offset and loose during the drawing process, affecting the drawing effect, and facilitate the adjustment of the position of the drawing component.

[0017] 4. A hanging ring is fixed on the right end of the drawing ruler, which allows the drawing ruler to be easily hung on a wall, drawing board, teaching display stand or other protruding objects. It not only provides a convenient hanging and storage solution, but also helps save space, prevent loss, and enhance the portability and functionality of the teaching aids. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic structural diagram of the utility model from another angle.

[0020] Figure 3 It is a schematic diagram of the disassembled structure of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the drawing component in the utility model.

[0022] In the figure: 1. Angle disk; 11. Angle scale line; 2. Drawing ruler; 21. Through slot; 22. Viewport; 23. Length scale line; 24. Slide groove; 25. Tooth pattern; 3. Drawing assembly; 31. Fixed sleeve; 32. Metal slide; 33. Plastic spring; 34. Ear plate; 4. Hanging ring; 5. Suction cup; 6. Fixed shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example:

[0025] like Figures 1 to 4 As shown, a geometry drawing teaching aid comprises an angle disk 1 and a fixed rotating shaft 6, a fixed rotating shaft 6 is fixedly provided through the center of the angle disk 1, a drawing ruler 2 is clamped on the right side of the angle disk 1, the left end of the drawing ruler 2 is connected to the fixed rotating shaft 6 and can rotate along it, a drawing component 3 is arranged on the right side inside the drawing ruler 2, a suction cup 5 is arranged on the rear side of the angle disk 1, and the suction cup 5 is fixedly connected to one end of the fixed rotating shaft 6. This design solves the problem that the geometry drawing teaching aids in the prior art are mostly simple rulers, compasses, etc., different types of drawing teaching aids are needed for different geometric figures, and a variety of drawing teaching aids need to be carried in the teaching process, which is not convenient to carry, and the drawing has the problems of cumbersome operation and low precision.

[0026] A through slot 21 is vertically penetrated inside the drawing ruler 2. The through slot 21 is used to accommodate the fixed shaft 6 and the angle disc 1, so that the drawing ruler 2 can rotate freely around the fixed shaft 6 and the angle disc 1, so that the drawing ruler 2 can easily adjust the angle and be used in conjunction with the angle disc 1 to accurately draw lines and circles of various angles. A slide slot 24 is vertically penetrated on the right side of the drawing ruler 2. The drawing component 3 is placed inside the slide slot 24. The drawing component 3 can move along the slide slot 24, so that the drawing component 3 can adjust its position as needed to adapt to the drawing of lines of different lengths or circles of different functional diameters.

[0027] An angle scale line 11 is engraved on the front side of the angle disk 1 near the edge, and the angle of the geometric figure can be controlled by the angle scale line 11. A viewport 22 is opened on the left side of the drawing ruler 2, and the position of the viewport 22 corresponds to the position of the angle scale line 11. Through the viewport 22, the user can directly observe the angle scale line 11 during the drawing process without moving or adjusting the drawing ruler 2. This design reduces the error in the drawing process and improves the accuracy of the drawing.

[0028] Length scale lines 23 are engraved on the upper and lower sides near the edges of the front and rear surfaces of the drawing ruler 2. This design facilitates measuring the position of the drawing component 3 through the length scale lines 23 on the front side of the drawing ruler 2, thereby accurately controlling the radius length of the circle or arc to be drawn. The length scale lines 23 on the rear side of the drawing ruler 2 enable the drawing ruler 2 to have the function of measuring and drawing straight lines, and can be used as a ruler to measure or draw straight lines of different lengths.

[0029] The drawing assembly 3 includes a fixed sleeve 31, a metal slide 32, a plastic spring 33 and an ear plate 34. The fixed sleeve 31 is arranged inside the slide groove 24. The ear plates 34 are fixed on both upper and lower sides of the ring surface of the fixed sleeve 31. A plastic spring 33 with an M-shaped structure is fixed on the front side of the ear plate 34. A metal slide 32 with a smooth surface is pasted on the front side of the plastic spring 33. The surface of the metal slide 32 is in contact with the inner wall of the through groove 21. The drawing assembly 3 can be connected to the chalk for drawing work, which can ensure that the chalk is stable during the drawing process, and can ensure that accurate and clear lines are obtained during the geometric drawing process, thereby significantly improving the drawing quality and efficiency.

[0030] The rear side of the inner wall of the through slot 21 and the back side of the ear plate 34 are engraved with tooth patterns 25, and the ear plate 34 is meshed and connected with the drawing ruler 2 through the tooth patterns 25. This design can ensure a stable connection between the ear plate 34 and the drawing ruler 2, and can ensure a stable position of the drawing component 3, preventing the drawing component 3 from being offset and loosened during the drawing process to affect the drawing effect, and at the same time facilitates the adjustment of the position of the drawing component 3.

[0031] A hanging ring 4 is fixedly provided at the right end of the drawing ruler 2, which allows the drawing ruler 2 to be easily hung on a wall, a drawing board, a teaching display stand or other protruding objects, not only providing a convenient hanging and storage solution, but also helping to save space, prevent loss, and enhance the portability and functionality of the teaching aid.

[0032] The working principle of the geometric drawing teaching aid is as follows: when it is necessary to draw a circle or an arc, the suction cup 5 is adsorbed on the blackboard, the drawing ruler 2 is fixed by the suction cup 5, and then the fixed sleeve 31 is pulled to the front side to separate the tooth pattern 25 on the ear plate 34 from the tooth pattern 25 on the inner wall of the through groove 21, and the fixed sleeve 31 is moved left and right to adjust its position, and the fixed sleeve 31 is adjusted to an appropriate position by observing the length scale line 23 on the drawing ruler 2. At this time, the length from the fixed sleeve 31 to the fixed shaft 6 is the radius, and then the chalk is inserted into the fixed sleeve 31, and the drawing ruler 2 is rotated. The chalk is driven to rotate by the drawing ruler 2 to form a circle or an arc, and the angle of the arc can be accurately controlled by the angle scale line 11 on the angle disk 1;

[0033] When a straight line or a polygon needs to be drawn, the drawing ruler 2 is turned over so that the side of the drawing ruler 2 with the viewport 22 is in contact with the blackboard, and then chalk is used to draw along the edge of the drawing ruler 2 .

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A geometric drawing teaching aid, comprising an angle disc (1) and a fixed rotating shaft (6), characterized in that: A fixed rotating shaft (6) is fixedly provided through the center of the angle disc (1); a drawing ruler (2) is clamped on the right side of the angle disc (1); the left end of the drawing ruler (2) is connected to the fixed rotating shaft (6) and can rotate along the fixed rotating shaft; a drawing component (3) is provided on the right side of the drawing ruler (2); a suction cup (5) is provided on the rear side of the angle disc (1), and the suction cup (5) is fixedly connected to one end of the fixed rotating shaft (6).

2. The geometric drawing teaching aid according to claim 1, characterized in that: A through slot (21) is vertically penetrated inside the drawing ruler (2), a slide slot (24) is longitudinally penetrated on the right side inside the drawing ruler (2), and the drawing component (3) is placed inside the slide slot (24).

3. The geometric drawing teaching aid according to claim 1, characterized in that: The front side of the angle disk (1) is engraved with an angle scale line (11) near the edge, and the left side of the drawing ruler (2) is provided with a viewport (22), and the position of the viewport (22) corresponds to the position of the angle scale line (11).

4. The geometric drawing teaching aid according to claim 1, characterized in that: The drawing ruler (2) is provided with length scale lines (23) on both upper and lower sides near the edges of the front and rear surfaces.

5. The geometric drawing teaching aid according to claim 2, characterized in that: The drawing assembly (3) comprises a fixed sleeve (31), a metal slide (32), a plastic spring (33) and an ear plate (34); the fixed sleeve (31) is arranged inside the slide groove (24); the ear plates (34) are fixedly provided on both upper and lower sides of the annular surface of the fixed sleeve (31); an M-shaped plastic spring (33) is fixedly provided on the front side of the ear plate (34); a metal slide (32) with a smooth surface is adhered to the front side of the plastic spring (33); and the surface of the metal slide (32) is in contact with the inner wall of the through groove (21).

6. The geometric drawing teaching aid according to claim 5, characterized in that: The rear side of the inner wall of the through slot (21) and the back side of the ear plate (34) are both engraved with tooth patterns (25), and the ear plate (34) is meshedly connected to the drawing ruler (2) via the tooth patterns (25).

7. The geometric drawing teaching aid according to claim 1, characterized in that: A hanging ring (4) is fixedly provided at the right end of the drawing ruler (2).

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