Geometric drawing auxiliary device for mathematics teaching

Abstract

The utility model belongs to the technical field of drawing auxiliary devices, and particularly discloses a geometric drawing auxiliary device for mathematics teaching, which comprises a placing box, two sliding grooves are arranged in the placing box, two sliding blocks are connected in the two sliding grooves in a sliding manner, the tops of the two sliding blocks are fixedly connected with first springs, and the first springs are arranged in the two sliding grooves. A placement assembly is arranged between the two sliding blocks, the top ends of the two first springs are fixedly connected with the sliding grooves in the corresponding placement boxes correspondingly, the top of each placement box is fixedly connected with a moving block, each placement assembly comprises two connecting rings, and the two connecting rings are fixedly connected with the corresponding sliding blocks correspondingly; according to the drawing device, through the arrangement of the drawing assembly, the chalk can be always kept in contact with the blackboard, the first spring can drive the chalk to automatically adjust and adapt to the concave part and the convex part, the contact continuity is kept, the probability of touch breaking in the drawing process is reduced, and the situation that the teaching time is prolonged is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of drawing auxiliary devices, and more specifically, to a geometric drawing auxiliary device for mathematics teaching. Background Art

[0002] In the process of learning mathematics, mathematics teachers generally use various teaching aids to assist in drawing for teaching. Since some mathematics courses need to use graphics to represent and display mathematical concepts, relationships and function processes, this kind of drawing helps people better understand and explore mathematical theories through visualization. Therefore, mathematics teachers generally use drawing aids when teaching to ensure the accuracy of drawn graphics.

[0003] The publication number is CN210416023U. A portable compass ruler for mathematics teaching is provided with an arc plate. When the base point of the center of the circle needs to be adjusted when drawing, first loosen the first bolt on the first bracket, then rotate the conical nail to drive the arc plate on the conical nail to move in the arc groove to adjust the angle between the conical nail and the first bracket, and then tighten the first bolt to clamp the arc plate, thereby facilitating the adjustment of the base point of the center of the circle.

[0004] However, when drawing in this patent, there are tiny bumps or wear on the blackboard, which will cause the chalk to be obstructed or uneven during movement, resulting in a break in contact between the chalk and the blackboard, interrupting the process of drawing circles or arcs, extending the teaching time and reducing drawing efficiency. Utility Model Content

[0005] In order to solve the above problems, the present application provides a geometric drawing auxiliary device for mathematics teaching.

[0006] The present application provides a geometric drawing auxiliary device for mathematics teaching using the following technical solution:

[0007] A geometric drawing auxiliary device for mathematics teaching comprises a central rod, and a drawing component is arranged on one side of the central rod;

[0008] The drawing component comprises a placement box, wherein two slide grooves are provided inside the placement box, two sliders are slidably connected inside the two slide grooves, the tops of the two sliders are fixedly connected with a first spring, and a placement component is provided between the two sliders;

[0009] The placement component includes a connecting ring, the number of which is set to two, the two connecting rings are fixedly connected to the corresponding sliders respectively, the opposite sides of the two connecting rings are fixedly connected with multiple second springs, the opposite sides of the multiple second springs are fixedly connected with a fixing ring, and chalk is provided between the two fixing rings.

[0010] Through the above technical solution, the drawing component can keep the chalk in contact with the blackboard at all times, reduce the probability of disconnection during drawing, avoid extending the teaching time, and improve drawing efficiency.

[0011] Furthermore, the top ends of the two first springs are respectively fixedly connected to the slide grooves inside the corresponding placement boxes, and the top of the placement box is fixedly connected with a moving block.

[0012] Through the above technical solution, the first spring can drive the slider to slide inside the slide groove of the placement box, and automatically adjust and adapt to the depression and protrusion.

[0013] Furthermore, a collar is rotatably connected to the outside of the center rod, a connecting tube is fixedly connected to the top of the collar, the connecting tube is rotatably connected to the center rod, and a rotating handle is fixedly connected to the top of the connecting tube.

[0014] Through the above technical solution, the rotating handle drives the ring below the connecting tube to rotate, and the rotation of the ring drives the multi-stage telescopic plate to rotate, so as to draw geometric figures.

[0015] Furthermore, a suction cup is fixedly connected to the bottom of the central rod, and one end of the sleeve ring is fixedly connected to a multi-stage telescopic plate, and friction grooves are arranged inside the multi-stage telescopic plate.

[0016] Through the above technical solution, the suction cup fixes the central rod on the blackboard, which is convenient for drawing.

[0017] Furthermore, the moving block is slidably connected to the multi-stage telescopic plate, and an elastic pad is provided on the inner wall of the moving block.

[0018] Through the above technical solution, the elastic pad has a certain elastic deformation while increasing the friction force, which can enable the moving block to move stably on the multi-stage telescopic plate.

[0019] Furthermore, one side of the multi-stage telescopic plate is provided with scale lines, and the outer wall of the center rod is provided with a degree ring.

[0020] Through the above technical solution, the scale lines can accurately draw circles of different sizes, and the degrees on the degree ring can draw circles of other angles, providing more versatility.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] (1) The utility model can keep the chalk in contact with the blackboard at all times through the setting of the drawing component. Specifically, when the chalk rotates and encounters a depression or a protrusion on the blackboard, the first spring drives the slider to slide inside the slide groove of the placement box, so that the chalk automatically adjusts and adapts to the depression and the protrusion. The chalk will always keep in contact with the blackboard, maintain the continuity of contact, reduce the probability of disconnection during drawing, and avoid extending the teaching time;

[0023] (2) The utility model can stably hold the chalk by placing the component. Specifically, when in use, the chalk is placed between the two fixing rings, and the elasticity of the second spring clamps the chalk, which is convenient for drawing. At the same time, the placement component can also be used to place chalks of different diameters, and the installation and removal of the chalk are relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the retraction of the multi-stage telescopic plate of the utility model;

[0026] Figure 3 This is a schematic diagram of the internal structure of the placement box of the utility model;

[0027] Figure 4 It is a schematic diagram of the connection structure of the connecting ring and the fixing ring of the utility model;

[0028] Figure 5 It is a schematic diagram of the connection structure of the multi-stage telescopic plate and the friction groove of the utility model.

[0029] Explanation of the accompanying drawings: 1. Center rod; 2. Ring; 3. Connecting tube; 4. Turning handle; 5. Multi-stage telescopic plate; 6. Suction cup; 7. Moving block; 8. Placement box; 9. Elastic pad; 10. First spring; 11. Sliding block; 12. Second spring; 13. Connecting ring; 14. Fixed ring; 15. Chalk; 16. Friction groove; 17. Degree ring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0031] Example 1, reference Figure 1-Figure 3 , a geometric drawing auxiliary device for mathematics teaching, comprising a central rod 1, a drawing component is provided on one side of the central rod 1;

[0032] The drawing component includes a placement box 8, wherein two slide grooves are provided inside the placement box 8, two sliders 11 are slidably connected inside the two slide grooves, the tops of the two sliders 11 are fixedly connected with first springs 10, and a placement component is provided between the two sliders 11;

[0033] The placement component includes a connecting ring 13, the number of which is set to two, the two connecting rings 13 are respectively fixedly connected to the corresponding sliders 11, the opposite sides of the two connecting rings 13 are fixedly connected with multiple second springs 12, the opposite sides of the multiple second springs 12 are fixedly connected with a fixing ring 14, and a chalk 15 is provided between the two fixing rings 14.

[0034] By setting the drawing component, the chalk 15 can always keep in contact with the blackboard, and the first spring 10 will drive the chalk 15 to automatically adjust and adapt, maintain the continuity of contact, and reduce the probability of disconnection during drawing.

[0035] By placing the component, the chalk 15 can be stably clamped. Specifically, when in use, the chalk 15 is placed between the two fixing rings 14, and the elasticity of the second spring 12 clamps the chalk 15 to facilitate drawing. At the same time, the placement component can also be used to place chalks 15 of different diameters, and the installation and removal of the chalk 15 are relatively convenient.

[0036] Reference Figure 3-Figure 4 The top ends of the two first springs 10 are fixedly connected to the corresponding slide grooves inside the placement box 8, and the top of the placement box 8 is fixedly connected with a moving block 7.

[0037] Reference Figure 1-Figure 2 The outside of the center rod 1 is rotatably connected with a collar 2, the top of the collar 2 is fixedly connected with a connecting tube 3, the connecting tube 3 is rotatably connected to the center rod 1, the top of the connecting tube 3 is fixedly connected with a rotating handle 4, the bottom of the center rod 1 is fixedly connected with a suction cup 6, one end of the collar 2 is fixedly connected with a multi-stage telescopic plate 5, the interior of the multi-stage telescopic plate 5 is provided with a friction groove 16, the moving block 7 is slidably connected with the multi-stage telescopic plate 5, and the inner wall of the moving block 7 is provided with an elastic pad 9.

[0038] When in use, the entire device can be adsorbed on the blackboard through the suction cup 6 to achieve fixation, and then the ring 2 under the connecting tube 3 is driven to rotate by the rotating handle 4, and the rotation of the ring 2 drives the multi-stage telescopic plate 5 to rotate to draw geometric figures;

[0039] The friction groove 16 inside the multi-stage telescopic plate 5 can increase the friction between the multi-stage telescopic plates 5 to provide stronger stability and fixation. The multi-stage telescopic plates 5 are difficult to move accidentally without applying force, ensuring that the multi-stage telescopic plates 5 can maintain a stable position when telescopic movement is not required.

[0040] The elastic pad 9 can increase the friction force so that the moving block 7 can be displaced only when force is applied. At the same time, the elastic pad 9 has a certain elastic deformation amount, which can adapt to the gap between the multi-stage telescopic plates 5, so that the moving block 7 can move stably between the multi-stage telescopic plates 5.

[0041] Example 2, reference Figure 5 A scale line is provided on one side of the multi-stage telescopic plate 5, and a degree ring 17 is provided on the outer wall of the center rod 1.

[0042] If it is necessary to draw circles of other angles, the degree ring 17 can be installed on the central rod 1, and figures of other angles can be drawn according to the degrees on the degree ring 17, which provides more versatility.

[0043] Working principle: when drawing is needed, first suck the suction cup 6 onto the blackboard, then insert the moving block 7 into the multi-stage telescopic plate 5, then move the moving block 7 according to the size of the circle to be drawn, and insert the chalk 15 into the two fixing rings 14 for fixing. After fixing, turn the handle 4 to drive the ring 2 under the connecting tube 3 to rotate, and the rotation of the ring 2 drives the multi-stage telescopic plate 5 to rotate, thereby driving the chalk 15 under the moving block 7 to rotate. When encountering a depression or protrusion on the blackboard, the first spring 10 will drive the slider 11 to slide inside the slide groove of the placement box 8, automatically adjust and adapt to the depression and protrusion, so that the chalk 15 always keeps in contact with the blackboard, thereby improving the continuity of drawing and reducing the probability of disconnection during drawing. After use, the moving block 7 can be moved to the multi-stage telescopic plate 5 closest to the ring 2 or removed, and the multi-stage telescopic plate 5 can be retracted for easy placement and carrying.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A geometric drawing auxiliary device for mathematics teaching, characterized in that: include: A central rod (1), wherein a drawing component is provided on one side of the central rod (1); A drawing component comprises a placement box (8), wherein two slide grooves are provided inside the placement box (8), two sliders (11) are slidably connected inside the two slide grooves, the tops of the two sliders (11) are fixedly connected with a first spring (10), and a placement component is provided between the two sliders (11); The placement component comprises a connecting ring (13), the number of the connecting rings (13) is set to two, the two connecting rings (13) are respectively fixedly connected to the corresponding slider (11), the two connecting rings (13) are fixedly connected to the opposite sides thereof with a plurality of second springs (12), the opposite sides of the plurality of second springs (12) are fixedly connected to a fixing ring (14), and a chalk (15) is arranged between the two fixing rings (14).

2. A geometric drawing auxiliary device for mathematics teaching according to claim 1, characterized in that: The top ends of the two first springs (10) are respectively fixedly connected to the slide grooves inside the corresponding placement boxes (8), and the top of the placement boxes (8) is fixedly connected to a moving block (7).

3. A geometric drawing auxiliary device for mathematics teaching according to claim 2, characterized in that: The outside of the central rod (1) is rotatably connected to a collar (2), the top of the collar (2) is fixedly connected to a connecting tube (3), the connecting tube (3) is rotatably connected to the central rod (1), and the top of the connecting tube (3) is fixedly connected to a rotating handle (4).

4. A geometric drawing auxiliary device for mathematics teaching according to claim 3, characterized in that: The bottom of the central rod (1) is fixedly connected to a suction cup (6), one end of the sleeve ring (2) is fixedly connected to a multi-stage telescopic plate (5), and the interior of the multi-stage telescopic plate (5) is provided with a friction groove (16).

5. A geometric drawing auxiliary device for mathematics teaching according to claim 4, characterized in that: The moving block (7) is slidably connected to the multi-stage telescopic plate (5), and an elastic pad (9) is provided on the inner wall of the moving block (7).

6. A geometric drawing auxiliary device for mathematics teaching according to claim 5, characterized in that: One side of the multi-stage telescopic plate (5) is provided with a scale line, and the outer wall of the central rod (1) is provided with a degree ring (17).

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