Mathematical drawing tool

Abstract

The utility model discloses a mathematical drawing tool, which relates to the technical field of teaching appliances and comprises a support plate, a rotating rod is fixedly arranged in the middle of one side of the support plate, a first scale plate is rotatably arranged in the middle of the rotating rod, a second scale plate is slidably arranged in the first scale plate, and sliding plates are fixedly arranged at the top end and the bottom end of the second scale plate. A support is fixedly arranged on one side of the top end of the first scale plate, a pull rod is slidably arranged in the middle of the support, and a rack plate is fixedly arranged at the bottom end of the pull rod. The beneficial effects of the utility model are that the rapid displacement of the second scale plate in the first scale plate is facilitated, the tedious repeated rotation operation is avoided, the precious time is saved, the working efficiency is obviously improved, the accurate indication can be intuitively provided for the follow-up arc adjustment distance, and the working efficiency is improved. A user can accurately judge the actual moving distance of the second scale plate accordingly, and therefore it is guaranteed that the drawn arc size is accurate and errorless.

Description

Technical Field

[0001] This utility model relates to a drawing tool, and more particularly to a mathematical drawing tool, belonging to the technical field of teaching aids. Background Technology

[0002] In the field of mathematics teaching and research, drawing tools are of great importance for accurately drawing geometric figures and function curves. While traditional drawing tools, such as ruler and compass combinations, can meet basic needs, they have limitations in terms of accuracy and efficiency. In recent years, to improve drawing accuracy and ease of use, various improved mathematical plotters have appeared on the market.

[0003] Application number "202320409393.6" discloses "a mathematical plotter," which includes a support plate. A rotating plate is rotatably connected to one side of the support plate via a damping shaft. An adjusting screw is rotatably connected inside the rotating plate, and an adjusting plate is threadedly connected to the outer side of the adjusting screw. The adjusting plate and the rotating plate are slidably connected. In this device, the addition of a worm gear and a worm wheel enables the worm gear and adjusting screw to rotate when the worm gear rotates. The adjusting screw then adjusts the position of the adjusting plate and the clamping plate. Chalk is clamped through the clamping grooves between the clamping plates. A second rotating block rotates the bidirectional screw, which moves the two sliding plates and the clamping plate towards the center position to clamp the chalk and drawing pen. An observation port allows observation of the protractor line on one side of the protractor ring.

[0004] However, the above method has the following drawbacks: adjusting the horizontal displacement of the adjusting plate by rotating the block, while feasible, is significantly inconvenient in practice. Especially when the user needs to quickly adjust the adjusting plate to a longer or shorter distance, repeatedly rotating the block is not only time-consuming but also greatly reduces work efficiency. More importantly, this method lacks intuitive adjustment distance indicators, making it impossible for the user to accurately judge the actual movement distance of the adjusting plate, thus making it difficult to guarantee the precise dimensions of the drawn arc. Utility Model Content

[0005] The purpose of this invention is to provide a mathematical drawing tool to solve the problem mentioned in the background art that requires multiple rotations of the rotating block to quickly adjust the distance of the adjustment plate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mathematical drawing tool, comprising a support plate, a rotating rod fixedly disposed in the middle of one side of the support plate, a scale plate one rotatably disposed in the middle of the rotating rod, and a scale plate two slidably disposed inside the scale plate one, a sliding plate fixedly disposed at the top and bottom of the scale plate two, a bracket fixedly disposed on one side of the top of the scale plate one, a pull rod slidably disposed in the middle of the bracket, and a rack plate fixedly disposed at the bottom of the pull rod, wherein the top of one of the sliding plates is provided with a plurality of toothed grooves that mesh with the rack plate, a movable plate fixedly disposed at the bottom of the pull rod, and a spring sleeved in the middle of the pull rod.

[0007] As a preferred technical solution of this utility model, a protractor ring is fixedly provided at the top of the support plate, a positioning block is sleeved on the outside of the protractor ring, and one side of the bottom end of the positioning block is fixedly connected to the middle of the top end of the scale plate.

[0008] As a preferred embodiment of this utility model, a scale is fixedly provided at the bottom of the support plate, an anti-slip pad is fixedly provided on the other side of the support plate, and a grip post is fixedly provided at one end of the rotating rod.

[0009] As a preferred technical solution of this utility model, the inside of the scale plate is provided with a sliding groove that cooperates with the sliding plate, and an adjustment column is rotatably provided on one side of the scale plate, and the surface of the adjustment column is covered with an anti-slip sleeve.

[0010] As a preferred technical solution of this utility model, a clamping assembly for holding chalk is provided on one side of the scale plate two. The clamping assembly includes a horizontal plate, which is fixedly installed on the top of one side of the scale plate two. A clamping plate one is fixedly provided on the bottom of one side of the scale plate two. A screw is threadedly connected to the middle of the horizontal plate. The bottom end of the screw is rotatably provided with the clamping plate two. Clamping grooves are provided at the top of the clamping plate one and the bottom of the clamping plate two.

[0011] As a preferred technical solution of this utility model, guide rods are fixedly provided on both sides of the top end of the clamping plate, and the top end of the guide rods penetrates through the horizontal plate and extends to the top of the horizontal plate, and a knob is provided at the bottom end of the screw.

[0012] As a preferred embodiment of this utility model, the top end of the pull rod is fixedly provided with a pull cap, the top end of the spring is fixedly connected to the top end of the inner wall of the bracket, and the other end is fixedly connected to the top end of the movable plate.

[0013] As a preferred embodiment of this utility model, guide blocks are fixedly provided on both sides of the movable plate, and guide grooves that slide and cooperate with the guide blocks are provided on both sides of the inner wall of the bracket.

[0014] Compared with related technologies, the mathematical drawing tool provided by this utility model has the following beneficial effects:

[0015] 1. By moving the lever upward, the rack plate can be driven to rise synchronously. This process separates the rack plate and the tooth groove, which were originally firmly supported by the moving plate and spring and were tightly meshed. This design facilitates the rapid displacement of the scale plate two inside the scale plate one, avoiding tedious repeated rotation operations. This not only saves valuable time but also significantly improves work efficiency. In addition, the scale plate two can slide flexibly inside the scale plate one, and with the help of its clear scale lines, it can intuitively provide accurate indication of the subsequent arc adjustment distance. Users can accurately judge the actual movement distance of the scale plate two, thereby ensuring that the drawn arc dimensions are accurate.

[0016] 2. The included clamping components enable the second clamping plate to move smoothly toward the first clamping plate. By performing the clamping operation, the chalk is securely held and fixed, facilitating the subsequent use of chalk to draw smooth, curved lines on the blackboard and ensuring a smooth and accurate drawing process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the support plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the scale plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the bracket of this utility model;

[0021] Figure 5 This is an exploded structural diagram of the bracket of this utility model;

[0022] Figure 6 This is a schematic diagram of the clamping assembly of this utility model.

[0023] In the diagram: 1. Support plate; 2. Rotating rod; 3. Scale plate one; 4. Scale plate two; 5. Slide plate; 6. Bracket; 7. Pull rod; 8. Rack plate; 9. Moving plate; 10. Spring; 11. Gear groove; 12. Clamping assembly; 1201. Horizontal plate; 1202. Clamping plate one; 1203. Screw; 1204. Clamping plate two; 1205. Clamping groove; 1206. Guide rod; 1207. Knob; 13. Pull cap; 14. Guide block; 15. Guide groove; 16. Adjusting column; 18. Scale; 17. Holding column; 19. Protractor ring; 20. Positioning block; 21. Anti-slip pad. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-6 This utility model provides a mathematical drawing tool, including a support plate 1. A rotating rod 2 is fixedly mounted on the middle of one side of the support plate 1. A scale plate 3 is rotatably mounted on the middle of the rotating rod 2, and a scale plate 4 is slidably mounted inside the scale plate 3. By moving the scale plate 4 inside the scale plate 3, combined with the scale lines on its surface, it can intuitively indicate the subsequent arc adjustment distance, allowing the user to accurately judge the actual movement distance of the scale plate 4, thereby ensuring the accurate size of the drawn arc. Slide plates 5 are fixedly mounted at the top and bottom of the scale plate 4, and a bracket 6 is fixedly mounted on one side of the top of the scale plate 3. The middle of the bracket 6 slides... A pull rod 7 is provided. The upward movement of the pull rod 7 drives the rack plate 8 to move upward. This process separates the rack plate 8, which was originally firmly supported and tightly engaged by the moving plate 9 and the spring 10, from the tooth groove 11. This facilitates the quick movement of the scale plate 2 4 inside the scale plate 1 3 without repeated rotation operations, saving time and improving work efficiency. The bottom end of the pull rod 7 is fixedly provided with the rack plate 8. The top of one of the slide plates 5 is provided with several tooth grooves 11 that mesh with and connect with the rack plate 8. The bottom of the pull rod 7 is fixedly provided with the moving plate 9, and the middle part of the pull rod 7 is fitted with a spring 10 to facilitate the support and reset of the pull rod 7.

[0026] The top of the support plate 1 is fixedly provided with a protractor ring 19 for measuring angles. A positioning block 20 is fitted on the outside of the protractor ring 19 for easy movement at the protractor ring 19, allowing users to intuitively observe angle changes. One side of the bottom of the positioning block 20 is fixedly connected to the middle of the top of the scale plate 3. A scale ruler 18 is fixedly provided at the bottom of the support plate 1 for drawing straight lines. An anti-slip pad 21 is fixedly provided on the other side of the support plate 1 for anti-slip during the drawing process. A grip post 17 is fixedly provided at one end of the rotating rod 2 for easy gripping of the rotating rod 2.

[0027] A chalk clamping assembly 12 is provided on one side of the scale plate 2 4. The clamping assembly 12 includes a horizontal plate 1201, which is fixedly installed on the top of one side of the scale plate 2 4. A clamping plate 1202 is fixedly installed on the bottom of one side of the scale plate 2 4. A screw 1203 is threadedly connected to the middle of the horizontal plate 1201. A clamping plate 2 1204 is rotatably installed at the bottom end of the screw 1203. A clamping groove 1205 is provided at the top end of the clamping plate 1202 and the bottom end of the clamping plate 2 1204. A rubber pad is provided on the inner wall of the clamping groove 1205. Guide rods 1206 are fixedly provided on both sides of the top of 04, and the top of the guide rods 1206 penetrates through the horizontal plate 1201 and extends to the top of the horizontal plate 1201. A knob 1207 is provided at the bottom of the screw 1203. The clamping assembly 12 is provided. The knob 1207 drives the screw 1203 to rotate. Combined with the guide rods 1206, the clamping plate 1204 can move towards the clamping plate 1202. Combined with the clamping groove 1205, the chalk can be clamped and fixed, which is convenient for drawing arc lines on the blackboard with chalk later.

[0028] A pull cap 13 is fixedly provided at the top of the pull rod 7. The top of the spring 10 is fixedly connected to the top of the inner wall of the bracket 6, and the other end is fixedly connected to the top of the movable plate 9. The pull cap 13 makes it convenient for the user to stretch and lift the pull rod 7. The spring 10 can support and reset the movable plate 9, and the elasticity of the spring 10 itself is sufficient to support the movable plate 9, thereby ensuring that the rack plate 8 is stably inserted into the tooth groove 11 without loosening.

[0029] The scale plate 3 has a groove inside that slides with the slide plate 5, allowing the slide plate 5 to slide and connect with the scale plate 3. One side of the scale plate 3 has an adjustment post 16 that rotates, and the surface of the adjustment post 16 is covered with an anti-slip sleeve. The adjustment post 16 allows the user to draw an arc on the blackboard with the chalk held in the grip, centered on the rotating rod 2, by rotating the adjustment post 16.

[0030] Guide blocks 14 are fixedly provided on both sides of the movable plate 9, and guide grooves 15 that slide with the guide blocks 14 are provided on both sides of the inner wall of the bracket 6. The guide blocks 14 and guide grooves 15 are provided so that the movable plate 9 can play a limiting and guiding role when moving in the vertical direction, thereby improving the stability during movement.

[0031] In use, first place the chalk between the two clamping slots 1205, then rotate the screw 1203 by turning the knob 1207. With the support of the rotating clamping plate 1204 and the guide rod 1206, the clamping plate 1204 can be moved towards the clamping plate 1202, thereby clamping and fixing the chalk.

[0032] When drawing an arc on the blackboard, first adjust the position of scale plate 24 within scale plate 3 according to the required arc diameter. The user simply needs to pull the cap 13, causing the pull rod 7 and rack plate 8 to move upwards. This process separates the tightly meshed rack plate 8 from the toothed groove 11, which was originally firmly supported by the moving plate 9 and spring 10. This facilitates the quick movement of scale plate 24 within scale plate 3. During adjustment, the user can observe the scale lines on the surfaces of scale plate 3 and scale plate 24 to accurately determine the actual distance scale plate 24 has moved. This ensures that the drawn arc dimensions are accurate. After adjustment, loosen the pull cap 13. Under the action of the spring 10 and the moving plate 9, the rack plate 8 quickly engages with the tooth groove 11 and is limited. During this process, the spring 10 can effectively ensure that the rack plate 8 and the tooth groove 11 are tightly engaged. Then, using the grip column 17, press the anti-slip pad 21 on the support plate 1 tightly against the groove black plate. Use the adjusting column 16 to drive the scale plate 3 to rotate, and at the same time drive the positioning block 20 to move synchronously. Combined with the measuring ring 19, the arc can be drawn. At the same time, the straight line can also be drawn using the scale 18, which is convenient for users.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mathematical drawing tool, comprising a support plate (1), characterized in that, A rotating rod (2) is fixedly provided in the middle of one side of the support plate (1). A scale plate (3) is rotatably provided in the middle of the rotating rod (2), and a scale plate (4) is slidably provided inside the scale plate (3). A sliding plate (5) is fixedly provided at the top and bottom of the scale plate (4). A bracket (6) is fixedly provided on one side of the top of the scale plate (3). A pull rod (7) is slidably provided in the middle of the bracket (6), and a rack plate (8) is fixedly provided at the bottom of the pull rod (7). A plurality of toothed grooves (11) that mesh with the rack plate (8) are provided at the top of one of the sliding plates (5). A moving plate (9) is fixedly provided at the bottom of the pull rod (7), and a spring (10) is sleeved in the middle of the pull rod (7).

2. The mathematical plotting tool according to claim 1, characterized in that: The top of the support plate (1) is fixedly provided with a protractor ring (19), and a positioning block (20) is sleeved on the outside of the protractor ring (19). One side of the bottom end of the positioning block (20) is fixedly connected to the middle of the top of the scale plate (3).

3. The mathematical drawing tool according to claim 1, characterized in that: A scale (18) is fixedly provided at the bottom end of the support plate (1), an anti-slip pad (21) is fixedly provided on the other side of the support plate (1), and a grip post (17) is fixedly provided at one end of the rotating rod (2).

4. The mathematical plotting tool according to claim 1, characterized in that: The inside of the scale plate (3) is provided with a sliding groove that slides with the slide plate (5). An adjustment column (16) is provided on one side of the scale plate (3), and an anti-slip sleeve is provided on the surface of the adjustment column (16).

5. The mathematical plotting tool according to claim 1, characterized in that: The second scale plate (4) has a clamping assembly (12) for holding chalk on one side. The clamping assembly (12) includes a horizontal plate (1201), which is fixedly installed on the top of one side of the second scale plate (4). A clamping plate (1202) is fixedly installed on the bottom of one side of the second scale plate (4). A screw (1203) is threadedly connected to the middle of the horizontal plate (1201). A clamping plate (1204) is rotatably provided at the bottom end of the screw (1203). A clamping groove (1205) is provided at the top end of the clamping plate (1202) and the bottom end of the clamping plate (1204).

6. The mathematical plotting tool according to claim 5, characterized in that: Guide rods (1206) are fixedly provided on both sides of the top of the clamping plate (1204), and the top of the guide rods (1206) passes through the horizontal plate (1201) and extends to the top of the horizontal plate (1201). A knob (1207) is provided at the bottom of the screw (1203).

7. The mathematical drawing tool according to claim 1, characterized in that: The top end of the pull rod (7) is fixedly provided with a pull cap (13), the top end of the spring (10) is fixedly connected to the top end of the inner wall of the bracket (6), and the other end of the spring (10) is fixedly connected to the top end of the moving plate (9).

8. The mathematical plotting tool according to claim 1, characterized in that: Guide blocks (14) are fixed on both sides of the movable plate (9), and guide grooves (15) that slide with the guide blocks (14) are opened on both sides of the inner wall of the bracket (6).

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