Drawing device for mathematics

Abstract

The utility model provides a plotter for mathematics, which relates to the technical field of plotters and comprises a fixing seat, a sliding groove is arranged at the top of the fixing seat, a rotating ring is arranged in the sliding groove, a top plate is fixedly connected to the top of the rotating ring, and a center line is fixedly connected between the inner walls of the top plate. According to the drawing device, the drawing device is placed on the blackboard, the drawing device can be adsorbed to the blackboard through the suction cup, fatigue caused by long-time supporting of a worker is avoided, the ruler is manually pulled to move left and right, the center line and the scale line serve as reference, the radius of a graph is determined accordingly, the ruler is fixed by tightening the first locking bolt, and the drawing device is convenient to use. The straight ruler is made of transparent acrylic plate materials, the relative position between the pointer and the angle line is observed through the straight ruler, accordingly, the included angle of the circle center of the arc is determined, and the drawing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plotters, in particular to a plotter used for mathematics. Background Art

[0002] Mathematics is a discipline that studies concepts such as quantity, structure, change, space and information. From a certain perspective, it is a kind of formal science. Therefore, in mathematics teaching, the explanation of geometric figures is indispensable, and teaching staff need to rely on drawing tools in the process of drawing figures, so that the drawn figures are more vivid and easier for students to understand.

[0003] In college mathematics, it is often necessary to measure angles when drawing. Existing mathematical plotters often use multiple tools for combined operations. Especially when drawing arcs with certain requirements on the center angle of the circle, a protractor and a compass need to be used in combination to determine the center angle of the arc, which makes drawing inconvenient and inefficient. Therefore, we propose a new type of plotter for mathematics. Utility Model Content

[0004] The utility model aims to solve the problem that the existing mathematical plotters in the prior art often use a plurality of tools for combined operation, especially when drawing an arc with certain requirements on the center angle of the circle, a protractor and a compass need to be used in combination to determine the center angle of the arc, which leads to the problem that the drawing is not convenient and fast enough, and a mathematical plotter is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plotter for mathematics, comprising a fixed seat, a slide groove is provided on the top of the fixed seat, a rotating ring is arranged inside the slide groove, a top plate is fixedly connected to the top of the rotating ring, a center line is fixedly connected between the inner walls of the top plate, a pointer is fixedly connected to the outer surface of the top plate near the bottom, a limit groove is symmetrically provided on the outer surface of the top plate, a ruler is movably arranged between two of the limit grooves, a scale line is arranged on the top of the ruler, a hollow ring is fixedly connected to the outer wall of the fixed seat, and an angle line is arranged on the top of the hollow ring.

[0006] Furthermore, a first locking bolt is threadedly provided on the top of the top plate, and a plurality of suction cups are fixedly connected to the bottom of the hollow ring.

[0007] Furthermore, a sealing bolt is threadedly provided on the outer surface of the hollow ring, a sealing gasket is sleeved on the outer surface of the sealing bolt, and the sealing gasket is tightly fitted to the outer surface of the hollow ring.

[0008] Furthermore, a clamping assembly is provided on the right outer surface of the ruler, and the clamping assembly includes a connecting plate, and the connecting plate is fixedly connected to the right surface of the ruler.

[0009] Furthermore, connection columns are fixedly connected to the inner top of the connection plate near the four corners, and a slide plate is slidably arranged between the outer surfaces of the plurality of connection columns.

[0010] Furthermore, a connecting spring is fixedly mounted on the top of the slide plate, and the top end of the connecting spring is fixedly mounted on the inner top of the connecting plate.

[0011] Furthermore, a jacket is fixedly connected to the right surface of the slide plate, and a second locking bolt is threadedly provided on the outer surface of the jacket.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, a plotter is placed on a blackboard, and the plotter can be adsorbed on the blackboard by a suction cup, so that fatigue caused by long-term support is avoided. The ruler is manually pulled left and right, and the center line and the scale line are used as references to each other to determine the radius of the figure, and the ruler is fixed by tightening the first locking bolt, and then the ruler is manually rotated, so that an arc can be drawn by the chalk in the clamping assembly. Since the ruler is made of a transparent acrylic plate material, the relative position between the pointer and the angle line is observed through the ruler, so as to determine the center angle of the arc, which greatly improves the drawing efficiency.

[0014] 2. In the utility model, after drawing is completed, the sealing bolt is loosened so that the sealing gasket no longer seals the hollow ring, so that the air pressure inside and outside the hollow ring is the same, so that the suction cup and the blackboard do not generate suction, and it is convenient to take the plotter off the blackboard. When the jacket clamps the chalk, under the action of the connecting spring, the extrusion slide moves downward, so that the chalk in the jacket is closely attached to the surface of the blackboard, ensuring that the drawing will not be unclear due to the wear and consumption of the chalk during the drawing process, thereby improving the drawing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a plotter for mathematics is proposed for the utility model;

[0016] Figure 2 A partial structural cross-sectional view of a plotter for mathematics is proposed for the utility model;

[0017] Figure 3 A hollow ring cross-sectional view of a plotter for mathematics is proposed for the utility model;

[0018] Figure 4 For this utility model Figure 3A in the enlarged view;

[0019] Figure 5 The utility model provides a schematic diagram of the structure of a clamping assembly for a mathematical plotter.

[0020] Legend: 1. Fixed seat; 11. Slide groove; 2. Rotating ring; 21. Top plate; 22. Limiting groove; 23. Center line; 24. Pointer; 25. First locking bolt; 3. Ruler; 31. Scale line; 4. Hollow ring; 41. Suction cup; 42. Sealing bolt; 43. Sealing gasket; 44. Angle line; 5. Clamping assembly; 501. Connecting plate; 502. Connecting column; 503. Slide plate; 504. Connecting spring; 505. Jacket; 506. Second locking bolt. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 5 As shown, the utility model provides a plotter for mathematics, including a fixed seat 1, a slide groove 11 is provided on the top of the fixed seat 1, a rotating ring 2 is arranged inside the slide groove 11, a top plate 21 is fixedly connected to the top of the rotating ring 2, a center line 23 is fixedly connected between the inner walls of the top plate 21, a pointer 24 is fixedly connected to the outer surface of the top plate 21 near the bottom, a limiting groove 22 is symmetrically penetrated through the outer surface of the top plate 21, a ruler 3 is movably arranged between the two limiting grooves 22, a scale line 31 is arranged on the top of the ruler 3, a hollow ring 4 is fixedly connected to the outer wall of the fixed seat 1, an angle line 44 is arranged on the top of the hollow ring 4, a first locking bolt 25 is threadedly arranged on the top of the top plate 21, and a plurality of suction cups 41 are fixedly connected to the bottom of the hollow ring 4.

[0024] The effect achieved by the entire embodiment 1 is that the plotter is placed on the blackboard, and the plotter can be adsorbed on the blackboard through the suction cup 41 to avoid fatigue caused by long-term support of personnel. The ruler 3 is manually pulled left and right, and the center line 23 and the scale line 31 are used as references to each other to determine the radius of the figure. When the radius is fully adjusted, the ruler 3 is squeezed by tightening the first locking bolt 25, so that the ruler 3 can be fixed so that it cannot slide, and then the ruler 3 is manually rotated. When the ruler 3 rotates, the rotating ring 2 at the bottom of the top plate 21 rotates inside the slide groove 11, so that an arc can be drawn by the chalk in the clamping assembly 5. Since the ruler 3 is made of a transparent acrylic plate material, the relative position between the pointer 24 and the angle line 44 is observed through the ruler 3, so as to determine the center angle of the arc, which greatly improves the drawing efficiency.

[0025] Embodiment 2, as Figure 1-Figure 5 As shown, a sealing bolt 42 is threadedly provided on the outer surface of the hollow ring 4, and a sealing gasket 43 is sleeved on the outer surface of the sealing bolt 42. The sealing gasket 43 fits tightly with the outer surface of the hollow ring 4. A clamping assembly 5 is provided on the right outer surface of the ruler 3. The clamping assembly 5 includes a connecting plate 501, and the connecting plate 501 is fixedly connected to the right surface of the ruler 3. Connecting columns 502 are fixedly connected to the inner top of the connecting plate 501 near the four corners, and a slide plate 503 is slidably provided between the outer surfaces of the multiple connecting columns 502. A connecting spring 504 is fixedly installed on the top of the slide plate 503, and the top of the connecting spring 504 is fixedly installed on the inner top of the connecting plate 501. A jacket 505 is fixedly connected to the right surface of the slide plate 503, and a second locking bolt 506 is threadedly provided on the outer surface of the jacket 505.

[0026] The effect achieved by the entire embodiment 2 is that after the drawing is completed, the sealing bolt 42 is loosened so that the sealing gasket 43 no longer seals the hollow ring 4, and the air enters the interior of the hollow ring 4 along the threaded hole, so that the internal and external air pressures are the same, so that the suction cup 41 at the bottom of the hollow ring 4 and the blackboard do not generate suction, which facilitates the removal of the plotter from the blackboard, and the chalk is sleeved inside the jacket 505 and the chalk is clamped by tightening the second locking bolt 506. When the jacket 505 clamps the chalk, the connecting spring 504 squeezes the slide plate 503 downward, so that the chalk in the jacket 505 is close to the surface of the blackboard, ensuring that the drawing will not be unclear due to the wear and tear of the chalk during the drawing process, thereby improving the drawing effect. When the slide plate 503 slides, the connecting column 502 penetrates the slide plate 503 and slides against each other, playing a role in guiding the slide plate 503.

[0027] Working principle: When in use, the chalk is sleeved inside the clamping sleeve 505, and the chalk is clamped by tightening the second locking bolt 506. Then the plotter is placed on the blackboard. The plotter can be adsorbed on the blackboard through the suction cup 41 to avoid fatigue caused by long-term support. The ruler 3 is manually pulled left and right, and the center line 23 and the scale line 31 are used as references to determine the radius of the figure. When the radius is fully adjusted, the ruler 3 is squeezed by tightening the first locking bolt 25, so that the ruler 3 can be fixed and cannot slide. Then the ruler 3 is manually rotated. When the ruler 3 rotates, the rotating ring 2 at the bottom of the top plate 21 rotates inside the slide groove 11, so that an arc can be drawn by the chalk in the clamping assembly 5, and because the ruler 3 is a transparent sub Made of acrylic board material, the relative position between the pointer 24 and the angle line 44 is observed through the ruler 3, so as to determine the center angle of the arc, which greatly improves the drawing efficiency. After the drawing is completed, the sealing bolt 42 is loosened so that the sealing gasket 43 no longer seals the hollow ring 4, and the air enters the interior of the hollow ring 4 along the threaded hole, so that the internal and external air pressures are the same, so that the suction cup 41 at the bottom of the hollow ring 4 does not generate suction with the blackboard, which is convenient for removing the plotter from the blackboard. When the jacket 505 clamps the chalk, under the action of the connecting spring 504, the sliding plate 503 is squeezed downward, so that the chalk in the jacket 505 is close to the surface of the blackboard, ensuring that the drawing will not be unclear due to the wear and tear of the chalk during the drawing process, thereby improving the drawing effect.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A plotter for mathematics, comprising a fixing seat (1), characterized in that: The top of the fixed seat (1) is provided with a slide groove (11), the interior of the slide groove (11) is provided with a rotating ring (2), the top of the rotating ring (2) is fixedly connected with a top plate (21), the inner walls of the top plate (21) are fixedly connected with a center line (23), the outer surface of the top plate (21) is fixedly connected with a pointer (24) near the bottom, the outer surface of the top plate (21) is symmetrically provided with limit grooves (22), a ruler (3) is movably provided between the two limit grooves (22), the top of the ruler (3) is provided with a scale line (31), the outer wall of the fixed seat (1) is fixedly connected with a hollow ring (4), the top of the hollow ring (4) is provided with an angle line (44).

2. The plotter for mathematics according to claim 1, characterized in that: The top of the top plate (21) is threadedly provided with a first locking bolt (25), and the bottom of the hollow ring (4) is fixedly connected to a plurality of suction cups (41).

3. The plotter for mathematics according to claim 1, characterized in that: The outer surface of the hollow ring (4) is threadedly provided with a sealing bolt (42), and the outer surface of the sealing bolt (42) is sleeved with a sealing gasket (43), and the sealing gasket (43) is tightly fitted with the outer surface of the hollow ring (4).

4. The plotter for mathematics according to claim 1, characterized in that: A clamping assembly (5) is provided on the right outer surface of the ruler (3), and the clamping assembly (5) comprises a connecting plate (501), and the connecting plate (501) is fixedly connected to the right surface of the ruler (3).

5. The plotter for mathematics according to claim 4, characterized in that: Connecting columns (502) are fixedly connected to the inner top of the connecting plate (501) near the four corners, and sliding plates (503) are slidably arranged between the outer surfaces of the connecting columns (502).

6. The plotter for mathematics according to claim 5, characterized in that: A connecting spring (504) is fixedly mounted on the top of the slide plate (503), and the top end of the connecting spring (504) is fixedly mounted on the inner top of the connecting plate (501).

7. The plotter for mathematics according to claim 5, characterized in that: A jacket (505) is fixedly connected to the right surface of the slide plate (503), and a second locking bolt (506) is threadedly arranged on the outer surface of the jacket (505).

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