Drawing device with good flexibility

Abstract

The utility model discloses a drawing device with good flexibility in the technical field of drawing devices, which comprises a first straight ruler and a second straight ruler, a fixing block is arranged on the left side of the first straight ruler, a limiting block is arranged at the bottom of the second straight ruler, the fixing block is positioned below the limiting block, and the limiting block is positioned below the first straight ruler. The top of the fixing block penetrates through the fixing block and the limiting block and is provided with a rotating shaft, rectangular grooves are formed in the top of the first ruler and the top of the second ruler in a penetrating mode, sliding grooves are formed in one sides of the rectangular grooves, moving blocks are arranged in inner cavities of the rectangular grooves, the rectangular grooves are matched with the moving blocks, and sliding blocks are arranged on one sides of the moving blocks. A sliding block is arranged on one side of the movable block, the sliding block is matched with the sliding groove, a connecting block is arranged on the other side of the movable block, a fastening bolt is arranged on the side, away from the movable block, of the connecting block, a device is fixed through an adsorption disc, then chalk is clamped, the position of the movable block is adjusted according to scale marks, and circles and arcs of different sizes are conveniently drawn.

Description

Technical Field

[0001] The utility model relates to the technical field of plotters, in particular to a plotter with good flexibility. Background Art

[0002] A mathematical graphing device is a device that assists in drawing in mathematics teaching. Generally, during teaching, teachers will hold the graphing device and draw relevant graphics to assist in teaching problems.

[0003] Chinese patent number CN214240201U discloses a mathematical plotting device for vocational college mathematics teachers. The device facilitates the rotation of the angles of the first ruler and the second ruler through the coordinated arrangement of the first connecting block, the resistance shaft and the second connecting block, and increases the drawing size. Through the coordinated arrangement of the jack, the return spring, the first curved plate, the fixing bolt, the swivel and the second curved plate, when in use, the chalk is placed in the jack, and then the fixing bolt is rotated, so that the swivel drives the second curved plate to move forward, squeezing the chalk, thereby fixing the chalk, making it convenient for teachers to draw circles for teaching. However, the device is a fixed structure and can only draw circles of one diameter. It cannot be adjusted according to needs, and is inconvenient to draw circles of different sizes. It has certain limitations when used. For this reason, we provide a plotting device with good flexibility. Utility Model Content

[0004] The purpose of the present invention is to provide a plotter with good flexibility to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a plotting device with good flexibility, comprising a first ruler and a second ruler, a fixed block is provided on the left side of the first ruler, a limiting block is provided at the bottom of the second ruler, and the fixed block is located below the limiting block, a rotating shaft is provided through the top of the fixed block and the limiting block, a rectangular groove is provided through the top of the first ruler and the second ruler, a sliding groove is provided on one side of the rectangular groove, a moving block is provided in the inner cavity of the rectangular groove, and the rectangular groove matches the moving block, a slider is provided on one side of the moving block, and the slider matches the sliding groove, a connecting block is provided on the other side of the moving block, and a fastening bolt is provided on the side of the connecting block away from the moving block.

[0006] Preferably, a circular hole is provided through the top of the moving block, springs are provided on the front and rear sides of the top and bottom of the circular hole, a splint is provided on the side of the spring away from the moving block, and an anti-slip pad is provided on the inner circle of the splint.

[0007] Preferably, scale lines are provided on the top rear side of the first ruler and the top right side of the second ruler.

[0008] Preferably, a suction plate is provided at the bottom of the rotating shaft.

[0009] Preferably, a circular groove is provided through the top of each of the fixing block and the limiting block, and the circular groove matches the rotating shaft.

[0010] Preferably, a threaded hole is provided at the center of a side of the connecting block away from the moving block, and the threaded hole can be threadedly connected to a fastening bolt.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the device is adsorbed on the blackboard by the adsorption disk, the chalk is placed in the round hole, and then the clamp is tightened by the compression of the spring to facilitate drawing. Straight lines can be drawn through the scale lines, and the length of the device can be adjusted according to the diameter of the circle and the diameter of the arc. The connecting block and the movable block are moved apart by the threaded connection of the fastening bolt, and then the movable block is moved by sliding the slider in the slide groove, and the position of the chalk is adjusted according to the scale line, and then it is fixed to the ruler by the threaded connection of the fastening bolt, and then drawing is performed by rotating the fixed block, the limit block and the rotating shaft, which is convenient for drawing circles and arcs of different diameters, can be adjusted according to needs, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a side view of the structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the rotating structure of the utility model;

[0015] Figure 4 This is an enlarged view of point A of the present utility model.

[0016] In the figure: 1. First ruler; 2. Second ruler; 3. Fixed block; 4. Circular groove; 5. Rotating shaft; 6. Suction plate; 7. Rectangular groove; 8. Moving block; 9. Slide groove; 10. Slider; 11. Circular hole; 12. Spring; 13. Clamp; 14. Connecting block; 15. Fastening bolt; 16. Limit block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-4The utility model provides a technical solution: a plotter with good flexibility, including a first ruler 1 and a second ruler 2, a fixed block 3 is provided on the left side of the first ruler 1, a limit block 16 is provided at the bottom of the second ruler 2, and the fixed block 3 is located below the limit block 16, the top of the fixed block 3 passes through the fixed block 3 and the limit block 16 and is provided with a rotating shaft 5, the tops of the first ruler 1 and the second ruler 2 are both penetrated by a rectangular groove 7, a sliding groove 9 is provided on one side of the rectangular groove 7, a moving block 8 is provided in the inner cavity of the rectangular groove 7, and the rectangular groove 7 matches the moving block 8, and the moving A slider 10 is provided on one side of the block 8, and the slider 10 matches the slide groove 9. A connecting block 14 is provided on the other side of the moving block 8. A fastening bolt 15 is provided on the side of the connecting block 14 away from the moving block 8. After the device is fixed, the sliding of the slider 10 in the slide groove 9 drives the moving block 8 and the connecting block 14 to move, and a pointer is provided at the center of the top of the moving block 8 near the scale line. The position of the moving block 8 can be adjusted by the pointer, and then it is fixed by the threaded connection of the fastening bolt 15, which makes it convenient to draw circles and arcs of the required diameter and facilitates teaching.

[0019] A circular hole 11 is provided through the top of the moving block 8, and springs 12 are provided on the front and rear sides of the top and bottom of the circular hole 11. A splint 13 is provided on the side of the spring 12 away from the moving block 8, and an anti-slip pad is provided on the inner circle of the splint 13. When the chalk is placed in the circular hole 11, the spring 12 is compressed through the splint 13, which makes it convenient to tighten and fix the chalk. The anti-slip pad can increase friction and prevent the chalk from falling, thereby facilitating subsequent drawing.

[0020] Scale lines are provided on the top rear side of the first ruler 1 and the top right side of the second ruler 2, and the scale lines are used to facilitate drawing circles and arcs of different diameters.

[0021] An adsorption plate 6 is provided at the bottom of the rotating shaft 5, and the device is adsorbed on the blackboard through the adsorption plate 6, which is convenient for drawing.

[0022] The tops of the fixed block 3 and the limit block 16 are both penetrated by a circular groove 4, and the circular groove 4 matches the rotating shaft 5. The rotating shaft 5 facilitates the rotation of the fixed block 3 and the limit block 16, thereby adjusting the angles of the two rulers and facilitating rotation to draw circles and arcs.

[0023] A threaded hole is provided at the center of the side of the connecting block 14 away from the moving block 8, and the threaded hole can be threadedly connected to the fastening bolt 15. The threaded connection of the fastening bolt 15 can enable the connecting block 14 to drive the moving block 8 to be fixed to the ruler to prevent sliding, making it convenient to draw circles and arcs of different sizes.

[0024] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plotter with good flexibility, comprising a first ruler (1) and a second ruler (2), characterized in that: A fixed block (3) is provided on the left side of the first ruler (1), a limiting block (16) is provided on the bottom of the second ruler (2), and the fixed block (3) is located below the limiting block (16). A rotating shaft (5) is provided on the top of the fixed block (3) and the limiting block (16). A rectangular groove (7) is provided on the top of each of the first ruler (1) and the second ruler (2). A sliding groove (9) is provided on one side of the rectangular groove (7). A moving block (8) is provided in the inner cavity of the rectangular groove (7), and the rectangular groove (7) matches the moving block (8). A sliding block (10) is provided on one side of the moving block (8), and the sliding block (10) matches the sliding groove (9). A connecting block (14) is provided on the other side of the moving block (8), and a fastening bolt (15) is provided on the side of the connecting block (14) away from the moving block (8).

2. A plotter with good flexibility according to claim 1, characterized in that: A circular hole (11) is provided through the top of the moving block (8), and springs (12) are provided on the front and rear sides of the top and bottom of the circular hole (11). A splint (13) is provided on the side of the spring (12) away from the moving block (8), and an anti-slip pad is provided on the inner ring of the splint (13).

3. A plotter with good flexibility according to claim 1, characterized in that: Scale lines are provided on the top rear side of the first ruler (1) and the top right side of the second ruler (2).

4. A plotter with good flexibility according to claim 1, characterized in that: A suction disk (6) is provided at the bottom of the rotating shaft (5).

5. The plotter with good flexibility according to claim 1, characterized in that: A circular groove (4) is provided through the top of each of the fixing block (3) and the limiting block (16), and the circular groove (4) matches the rotating shaft (5).

6. A plotter with good flexibility according to claim 1, characterized in that: A threaded hole is provided at the center of one side of the connecting block (14) away from the moving block (8), and the threaded hole can be threadedly connected to the fastening bolt (15).

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