A drawing circle auxiliary device for mathematics and applied mathematics
By designing a circle-drawing auxiliary device with a fixing part and a limiting part, the problem of existing devices being unable to adapt to pens of different sizes is solved, achieving stable fixation of different pens and efficient drawing, thus improving teaching and drawing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN POLYTECHNIC INST
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-14
AI Technical Summary
Existing circle drawing aids are difficult to adapt to pens of different sizes, resulting in the need to frequently change devices during teaching or drawing, which reduces drawing efficiency.
A circle-drawing auxiliary device including a fixing part and a limiting part was designed. The device can stably fix pens of different sizes through a driving component and a fixing component, and use elastic elements and limiting grooves to ensure the reliability of the fixed state and prevent the pen from loosening and falling off.
It achieves stable fixation of pens of different sizes, improves drawing efficiency, has a wide range of applications, and has high reliability in the fixed state, avoiding pen tilting or deformation caused by uneven force.
Smart Images
Figure CN224490475U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of teaching supplies technology, and in particular relates to a circle drawing auxiliary device for mathematics and applied mathematics. Background Technology
[0002] Mathematics and Applied Mathematics is a discipline that studies mathematical theories and methods and their applications in natural sciences, engineering technology, and social sciences. It emphasizes both the fundamental theoretical research of mathematics itself, such as algebra, geometry, and analysis, and the transformation of mathematical knowledge into tools for solving practical problems. It analyzes and solves various real-world problems by establishing mathematical models. The use of a circle-drawing aid is mainly to draw standard circles more accurately and efficiently, avoiding irregularities caused by factors such as technique and force when drawing by hand, and ensuring the accuracy and standardization of the drawing. This tool plays an important role in scenarios that require precise circles, such as mathematics teaching, engineering design, and drawing.
[0003] However, existing circle drawing aids are difficult to adapt to different pen sizes during use, which leads to frequent device replacements during teaching or drawing, thereby reducing drawing speed and affecting drawing efficiency in teaching. Utility Model Content
[0004] The purpose of this utility model is to provide a circle drawing auxiliary device for mathematics and applied mathematics. By setting a fixing part, it solves the problem that existing circle drawing auxiliary devices are difficult to adapt to different sized pens during use, which leads to the need to frequently change the device in teaching or drawing, thereby reducing the drawing speed and affecting the drawing efficiency in teaching.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model is a circle-drawing auxiliary device for mathematics and applied mathematics, including a fixed block, and further including: a circle-drawing part, which is mounted on the fixed block; a fixing part, which is disposed at the bottom of the fixed block; and a limiting part, which is mounted on the fixing part; wherein, the fixing part is located on the lower right side of the fixed block.
[0007] Furthermore, the drawing circle part includes a hinge rod one hinged to the fixed block, the bottom of the hinge rod one is fixedly connected to a circular ring, and a positioning element is provided on the fixed block; wherein, the hinge rod one is located on the right side of the fixed block, and the positioning element includes a hinge rod two hinged to the fixed block, the bottom of the hinge rod two is fixedly connected to a positioning pin; wherein, the hinge rod two is located on the left side of the fixed block.
[0008] Furthermore, the fixing part includes a driving assembly mounted on the circular ring; and a fixing assembly mounted on the top of the circular ring; wherein the driving assembly is located inside the circular ring.
[0009] Furthermore, the driving assembly includes a circular bracket rotatably connected to the inner wall of a circular ring. Several circular rods (first type) pass through the circular bracket and are rotatably connected to it. Several circular rods (second type) also pass through the circular bracket and are rotatably connected to it. Rectangular rings are fixedly connected to each of the circular rods (first type and second type). A handle is fixedly connected to the outer wall of the circular bracket. Three of each of the circular rods (first type and second type) are provided, with the first type located at the top of the circular bracket, the second type at the bottom, and the handle located on the left side of the circular bracket.
[0010] Furthermore, the fixing assembly includes several fixing rods fixedly connected to the top of the circular ring, each fixing rod having a fixing arm rotatably connected to its outer wall, each fixing arm being slidably connected to several rectangular rings, and each fixing arm having a U-shaped bracket fixedly connected to its side away from the fixing rods, with a fixing wheel rotatably connected to each U-shaped bracket; wherein, three fixing rods are provided, and the fixing arms are located within the rectangular rings.
[0011] Furthermore, the limiting part includes a support component disposed at the top of the circular ring; and a limiting component disposed on the circular ring; wherein the support component is mounted on the drive component.
[0012] Furthermore, the support assembly includes a circular cylinder connected to the handle, a telescopic rod fixedly connected to the inner top wall of the circular cylinder, a rectangular groove formed on the right side of the circular cylinder, a circular plate fixedly connected to the bottom of the telescopic rod, the circular plate being slidably connected to the circular cylinder, and an elastic element provided on the telescopic rod; wherein, the circular plate is located inside the circular cylinder, and the right side of the circular plate extends outward through the rectangular groove, the elastic element including a spring sleeved on the outer wall of the telescopic rod, the top of the spring being fixedly connected to the circular cylinder, and the bottom of the spring being fixedly connected to the circular plate; wherein, the spring is located inside the circular cylinder.
[0013] Furthermore, the limiting component includes a support rod fixedly connected to the bottom of the circular plate, a limiting block fixedly connected to the bottom of the support rod, and a plurality of limiting grooves opened on the top of the circular ring; wherein the limiting block is adapted to the plurality of limiting grooves.
[0014] This utility model has the following beneficial effects:
[0015] 1. By setting a fixing part, when fixing the pen, the pen is placed in the circular bracket, and then the circular bracket is rotated clockwise by the handle. At this time, the circular bracket drives several rectangular rings to rotate through several circular rods one and several circular rods two. At this time, the rectangular rings slide on several fixed arms, causing the fixed arms to rotate on their corresponding fixed rods and move closer to each other. Then, the fixed arms drive several fixed wheels to move closer to each other through several U-shaped brackets, thereby fixing the pen. By operating in the opposite way, the pen is fixed. This ensures that the fixed wheels apply uniform pressure to the pen from different directions, avoiding the pen body tilting or deformation due to uneven force. The fixed wheels can fit pen bodies of different thicknesses, such as pencils, markers, and fountain pens, without the need to replace device parts, thus expanding the applicability.
[0016] 2. By setting a limiting part, when the handle is rotated, the handle drives the telescopic rod to rotate via the cylindrical tube. The telescopic rod, through the support rod at the bottom of the circular plate, drives the limiting block to rotate. Under the action of the curved surface of the limiting block, the limiting block is compressed and moves upward. During this process, the spring is compressed, deformed, and generates elastic force. When the limiting block aligns with another limiting groove, under the action of the spring force, the circular bracket rotates clockwise to fix the pen. Under the action of the right-angled surface of the fixing arm and the right-angled surface of the U-shaped bracket, the reverse rotation of the circular bracket is restricted. As the clock hand rotates, when the pen is released from its fixation, the circular plate slides upwards through the circular cylinder and rectangular groove. At this time, the circular cylinder, through the support rod, moves the limiting block away from several limiting grooves. During this process, the telescopic rod and spring will be compressed and deformed, causing the spring to generate elastic force. This allows the handle to rotate counterclockwise around the circular bracket and release the pen from its fixation. Subsequently, the circular plate is released, and under the action of the spring force, the limiting block is reset. This ensures that the circular bracket will not rotate counterclockwise due to external force or vibration after the pen is fixed, preventing the pen from loosening and falling off, and ensuring the reliability of the fixed state.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a partial structural diagram of the circular part of this utility model;
[0021] Figure 3 This is a partial cross-sectional view of the fixing part of this utility model;
[0022] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle;
[0023] Figure 5 This is a partial cross-sectional view of the limiting part of this utility model;
[0024] Figure 6 This utility model Figure 5 A magnified structural diagram of B in the diagram.
[0025] The attached diagram lists the components represented by each number as follows:
[0026] 1. Circle part; 111. Fixing block; 112. Hinge rod one; 113. Circular ring; 114. Hinge rod two; 115. Positioning pin; 2. Fixing part; 21. Drive assembly; 211. Circular bracket; 212. Circular rod one; 213. Circular rod two; 214. Rectangular ring; 215. Handle; 22. Fixing assembly; 221. Fixing rod; 222. Fixing arm; 223. U-shaped bracket; 224. Fixing wheel; 3. Limiting part; 31. Support assembly; 311. Circular cylinder; 312. Telescopic rod; 313. Rectangular groove; 314. Circular plate; 315. Spring; 32. Limiting assembly; 321. Support rod; 322. Limiting block; 323. Limiting groove. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0028] Please see Figure 1-6As shown, this utility model is a circle-drawing auxiliary device for mathematics and applied mathematics, including a fixed block 111, and further including: a circle-drawing part 1, which is mounted on the fixed block 111; a fixing part 2, which is disposed at the bottom of the fixed block 111; and a limiting part 3, which is mounted on the fixing part 2; wherein, the fixing part 2 is located on the lower right side of the fixed block 111, the circle-drawing part 1 includes a hinge rod 112 hinged to the fixed block 111, and a circular ring 113 is fixedly connected to the bottom of the hinge rod 112, and a positioning member is provided on the fixed block 111; wherein, the hinge rod 112 is located on the right side of the fixed block 111, and the positioning member includes a hinge rod 114 hinged to the fixed block 111, and a positioning pin 115 is fixedly connected to the bottom of the hinge rod 114; wherein, the hinge rod 114 is located on the left side of the fixed block 111.
[0029] The fixing part 2 includes a drive assembly 21, which is mounted on the circular ring 113; and a fixing assembly 22, which is mounted on the top of the circular ring 113. The drive assembly 21 is located inside the circular ring 113 and includes a circular bracket 211 rotatably connected to the inner wall of the circular ring 113. A plurality of first circular rods 212 pass through the circular bracket 211 and are rotatably connected to it. A plurality of second circular rods 213 pass through the circular bracket 211 and are rotatably connected to it. Rectangular rings 214 are fixedly connected between each of the first circular rods 212 and each of the second circular rods 213. A handle 215 is fixedly connected to the outer wall of the circular bracket 211. Three of each of the first and second circular rods 212 are provided, with the first circular rods 212 located at the top of the circular bracket 211 and the second circular rods 213 located at the bottom. At the bottom of the circular bracket 211, the handle 215 is located on the left side of the circular bracket 211. The fixing component 22 includes several fixing rods 221 fixedly connected to the top of the circular ring 113. The outer walls of the fixing rods 221 are rotatably connected to fixing arms 222. The fixing arms 222 are slidably connected to several rectangular rings 214. The sides of the fixing arms 222 away from the fixing rods 221 are fixedly connected to U-shaped brackets 223. The U-shaped brackets 223 are rotatably connected to fixing wheels 224. There are three fixing rods 221 and the fixing arms 222 are located inside the rectangular rings 214. By setting the fixing part 2, it is ensured that the fixing wheels 224 apply uniform pressure to the pen from different directions, avoiding the pen body tilting or deformation due to uneven force. This allows the fixing wheels 224 to fit pen bodies of different thicknesses, such as pencils, markers, and fountain pens, without the need to replace device parts, thus improving the applicability.
[0030] The limiting part 3 includes a support assembly 31, which is disposed on the top of the circular ring 113; and a limiting assembly 32, which is disposed on the circular ring 113. The support assembly 31 is mounted on the drive assembly 21 and includes a circular cylinder 311 connected to the handle 215. A telescopic rod 312 is fixedly connected to the inner top wall of the circular cylinder 311. A rectangular groove 313 is provided on the right side of the circular cylinder 311. A circular plate 314 is fixedly connected to the bottom of the telescopic rod 312, and the circular plate 314 is slidably connected to the circular cylinder 311. An elastic element is provided on the telescopic rod 312. The circular plate 314 is located inside the circular cylinder 311, and its right side extends through the rectangular groove 313. Extending outwards, the elastic element includes a spring 315 sleeved on the outer wall of the telescopic rod 312. The top of the spring 315 is fixedly connected to the circular cylinder 311, and the bottom of the spring 315 is fixedly connected to the circular plate 314. The spring 315 is located inside the circular cylinder 311. The limiting component 32 includes a support rod 321 fixedly connected to the bottom of the circular plate 314. The bottom of the support rod 321 is fixedly connected to a limiting block 322. The top of the circular ring 113 is provided with several limiting grooves 323. The limiting block 322 is adapted to the several limiting grooves 323. By setting the limiting part 3, it is ensured that the circular bracket 211 will not rotate counterclockwise due to external force or vibration after the pen is fixed, thus preventing the pen body from loosening and falling off, and ensuring the reliability of the fixed state.
[0031] A specific application of this embodiment is as follows: In use, the pen is placed inside the circular bracket 211, and then the circular bracket 211 is rotated clockwise via the handle 215. At this time, the circular bracket 211 drives several rectangular rings 214 to rotate via several first round rods 212 and several second round rods 213. The rectangular rings 214 then slide on several fixed arms 222, causing the fixed arms 222 to rotate on their corresponding fixed rods 221 and move closer to each other. The fixed arms 222 are then connected by several U-shaped brackets 2... 23 drives several fixed wheels 224 to move closer together, thereby fixing the pen. Through the reverse operation process, the pen is released from fixation. When the handle 215 rotates, the handle 215 drives the telescopic rod 312 to rotate through the cylindrical tube 311. At this time, the telescopic rod 312 drives the limiting block 322 to rotate through the support rod 321 at the bottom of the circular plate 314. Under the action of the arc surface of the limiting block 322, the limiting block 322 is squeezed and moves upward. During this process, the spring 315 will be compressed and deformed, generating elastic force. When the limiting block 322 aligns with another limiting groove 323, the circular bracket 211 rotates clockwise under the force of the spring 315 to fix the pen. The right-angled surface of the fixing arm 222 and the right-angled surface of the U-shaped bracket 223 restrict the counter-clockwise rotation of the circular bracket 211. When the pen is released from its fixation, the circular plate 314 slides upwards between the circular cylinder 311 and the rectangular groove 313. At this time, the circular cylinder 311, through the support rod 321, drives the limiting block 322 away from several limiting grooves 323. During this process, the telescopic rod 3... 12 and spring 315 will be compressed and deformed, causing spring 315 to generate elastic force, thereby rotating the circular bracket 211 counterclockwise through handle 215 and releasing the fixation of the pen. Then, the circular plate 314 is released, and under the action of the elastic force of spring 315, the limiting block 322 is reset. After the pen is fixed, the size of the circle is adjusted by pulling the second hinge rod 114 and the first hinge rod 112 to rotate on the fixed block 111. Then, the positioning pin 115 is used for positioning, and the circle is drawn by rotating the fixed block 111.
[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A circle-drawing auxiliary device for mathematical and applied mathematics, comprising a fixed block (111), characterized in that, Also includes: The drawing circle part (1) is mounted on the fixing block (111); The fixing part (2) is provided at the bottom of the fixing block (111); and A limiting part (3) is mounted on a fixing part (2); The fixing part (2) is located on the lower right side of the fixing block (111); The fixing part (2) includes a drive assembly (21) mounted on a circular ring (113); and A fixing component (22) is mounted on top of the circular ring (113); The drive component (21) is located inside the circular ring (113); The drive assembly (21) includes a circular bracket (211) rotatably connected to the inner wall of a circular ring (113). A plurality of circular rods (212) pass through the circular bracket (211) and are rotatably connected to the circular bracket (211). A plurality of circular rods (213) pass through the circular bracket (211) and are rotatably connected to the circular bracket (211). A rectangular ring (214) is fixedly connected between each of the circular rods (212) and the circular rods (213). A handle (215) is fixedly connected to the outer wall of the circular bracket (211). Among them, there are three of each of the first round rods (212) and the second round rods (213). The first round rods (212) are located at the top of the circular bracket (211), the second round rods (213) are located at the bottom of the circular bracket (211), and the handle (215) is located on the left side of the circular bracket (211). The fixing component (22) includes a plurality of fixing rods (221) fixedly connected to the top of the circular ring (113). The outer walls of the plurality of fixing rods (221) are rotatably connected to fixing arms (222). The plurality of fixing arms (222) are slidably connected to a plurality of rectangular rings (214). The sides of the plurality of fixing arms (222) away from the plurality of fixing rods (221) are fixedly connected to U-shaped brackets (223). The plurality of U-shaped brackets (223) are rotatably connected to fixing wheels (224). Among them, three of the fixed rods (221) are provided, and several fixed arms (222) are located in several rectangular rings (214).
2. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 1, characterized in that, The drawing circle part (1) includes a hinge rod (112) hinged to the fixed block (111), and a circular ring (113) is fixedly connected to the bottom of the hinge rod (112). A positioning element is provided on the fixed block (111). Among them, hinge rod one (112) is located on the right side of fixed block (111).
3. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 2, characterized in that, The limiting part (3) includes a support assembly (31) disposed on the top of the circular ring (113); and A limiting component (32) is disposed on a circular ring (113); The support component (31) is mounted on the drive component (21).
4. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 3, characterized in that, The support assembly (31) includes a circular cylinder (311) connected to the handle (215), a telescopic rod (312) fixedly connected to the top inner wall of the circular cylinder (311), a rectangular groove (313) opened on the right side of the circular cylinder (311), a circular plate (314) fixedly connected to the bottom of the telescopic rod (312), the circular plate (314) being slidably connected to the circular cylinder (311), and an elastic element provided on the telescopic rod (312). The circular plate (314) is located inside the circular cylinder (311), and the right side of the circular plate (314) extends outward through the rectangular groove (313).
5. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 4, characterized in that, The limiting component (32) includes a support rod (321) fixedly connected to the bottom of the circular plate (314), a limiting block (322) fixedly connected to the bottom of the support rod (321), and a plurality of limiting grooves (323) opened on the top of the circular ring (113). The limiting block (322) is adapted to several limiting slots (323).
6. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 5, characterized in that, The positioning component includes a second hinge rod (114) hinged to the fixed block (111), and a positioning pin (115) is fixedly connected to the bottom of the second hinge rod (114). Among them, the second hinge rod (114) is located on the left side of the fixed block (111).
7. The circle-drawing auxiliary device for mathematical and applied mathematics according to claim 6, characterized in that, The elastic element includes a spring (315) sleeved on the outer wall of the telescopic rod (312), the top of the spring (315) being fixedly connected to the cylindrical tube (311), and the bottom of the spring (315) being fixedly connected to the circular plate (314). The spring (315) is located inside the cylindrical tube (311).