Multifunctional geometric drawing tool

Abstract

The utility model discloses a multifunctional geometric drawing tool which comprises a first ruler plate, a connecting column is vertically arranged at the end of the first ruler plate, a reference disc is sleeved on the connecting column in a relatively static mode, and an abutting nut is sleeved at the upper end of the connecting column in a threaded mode. The device further comprises a second ruler plate, a through hole is formed in the end of the second ruler plate, the connecting column penetrates through the through hole, and the reference disc is located above the second ruler plate. A supporting device is further arranged on the second ruler plate and comprises a sleeve and a supporting plate, the supporting plate is adjustably arranged on the second ruler plate, and the sleeve is arranged at the end of the supporting plate; the first ruler plate, the second ruler plate and the reference disc which are hinged are arranged, support is provided for teaching personnel to draw angles of different angles and straight lines of different lengths through the device, the current situation that the teaching personnel need to carry various drawing tools is changed, and graphs of different sizes can be drawn.

Description

Technical Field

[0001] The utility model relates to the technical field of geometric drawing, in particular to a multifunctional geometric drawing tool. Background Art

[0002] In mathematics teaching, teachers need to use rulers, compasses, protractors and other tools to draw figures used in teaching. Sometimes, rulers, compasses and protractors need to be used together to complete the drawing of certain figures. Therefore, in mathematics teaching, teachers need to carry a variety of drawing tools.

[0003] In order to complete the drawing of various graphics with a drawing tool, a Chinese patent with patent number CN216783150U discloses a geometric drawing ruler, including a ruler body, the ruler body including two ends, one end is a semicircular end, and the other end is a rectangular end, the semicircular end of the ruler body is rotatably provided with a first geometric plate, and the rectangular end of the ruler body is detachably provided with a second geometric plate, the first geometric plate and the second geometric plate are both provided with geometric hollow patterns, the ruler body is provided with a through hole for mounting with the first geometric plate and the second geometric plate, and the inner edge of the through hole is provided with a groove for inserting with the edge of the first geometric plate and the second geometric plate.

[0004] Although the drawing ruler provided by the above patent provides convenience for teaching drawing of various graphics, the size of the graphics drawn by it is fixed, which makes it inconvenient for teachers to draw graphics of different sizes according to actual teaching situations. Therefore, its practicality is low. Summary of the invention

[0005] The purpose of the utility model is to provide a multifunctional geometric drawing tool, aiming to improve the problem that it is cumbersome for mathematics teachers to carry a variety of drawing tools for teaching, and the tool that can draw a variety of graphics has low practicality.

[0006] The utility model is implemented as follows: a multifunctional geometric drawing tool comprises a first scale plate, a connecting column is vertically arranged at the end of the first scale plate, a reference disk is relatively stationary sleeved on the connecting column, and a pressing nut is threadedly sleeved on the upper end; it also comprises a second scale plate, a through hole is arranged at the end of the second scale plate, the connecting column passes through the through hole, and the reference disk is located above the second scale plate; a supporter is also arranged on the second scale plate, the supporter comprises a sleeve and a support plate, the support plate is adjustably arranged on the second scale plate, and the sleeve is arranged at the end of the support plate.

[0007] The length of the second ruler is greater than that of the first ruler, and an end plate is arranged at the end below the second ruler, and the end plate is arranged adjacent to the free end of the first ruler.

[0008] The end plate is provided with a threaded hole, a limiting bolt is threadedly provided through the threaded hole, and the end of the limiting bolt can be inserted into the end of the first scale plate.

[0009] The reference disk is provided with a perforation in the middle, with angle scale lines on the edge, with limiting columns on the side walls of the perforation, and with limiting grooves on the connecting columns. The limiting columns are located in the limiting grooves 18 .

[0010] The reference disk is provided with a plurality of holding holes, which are evenly distributed along the circumference of the reference disk and are located between the perforations and the angle scale lines.

[0011] The upper side of the first scale plate is provided with a first middle hole and a first scale line, and the first scale line is located at the edge of the first scale plate; the upper side of the second scale plate is provided with a second middle hole and a second scale line, the second middle hole is opposite to the first middle hole, and the side wall of the middle hole is opposite to the zero scale of the angular scale line.

[0012] The upper side of the second ruler is also provided with a snap-on slide groove, which is arranged along the length direction of the ruler, and an entry and exit groove is arranged at the end, and an anti-slip layer is arranged at the bottom of the snap-on slide groove.

[0013] A buckle slide plate is arranged below the support plate, and the buckle slide plate is installed in the buckle slide groove through the entry and exit groove. An alignment plate is arranged on the side of the sleeve, and the end of the alignment plate extends to the second scale line.

[0014] Compared with the prior art, the utility model has the following beneficial effects: 1. The utility model is provided with a hinged first ruler and a second ruler and a reference plate, which provide support for teaching staff to use the device to draw angles of different angles and straight lines of different lengths, changing the current situation that teaching staff need to carry a variety of drawing tools, and can draw graphics of different sizes. 2. The utility model is provided with a supporter, which can move relative to the second ruler to provide support for drawing circles of different diameters, further improving the practicality of the device and increasing the function of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the first foot plate of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the first scale plate and the reference plate of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the second foot plate of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the second scale plate and the supporter of the utility model.

[0020] In the figure: 1. first scale plate; 11. first scale line; 12. first middle hole; 13. reference plate; 14. connecting column; 15. holding hole; 16. pressing nut; 17. angle scale line; 18. limiting groove; 2. second scale plate; 21. end plate; 22. threaded hole; 23. limiting bolt; 24. entry and exit groove; 25. snap-on slide groove; 26. second scale line; 27. second middle hole; 3. supporter; 31. support plate; 32. snap-on slide plate; 33. sleeve; 34. alignment plate. DETAILED DESCRIPTION

[0021] The following is a further description with reference to the accompanying drawings and specific embodiments: Example 1

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the multifunctional geometric drawing tool includes a first ruler 1 and a second ruler 2. A connecting column 14 is vertically arranged at the end of the first ruler 1. The upper end of the connecting column 14 is threadedly sleeved with a pressing nut 16. A through hole is arranged at the end of the second ruler 2 and is arranged above the first ruler 1. The connecting column 14 is arranged through the through hole, and the pressing nut 16 can press the second ruler 2. A first scale line 11 is arranged on the upper side of the first ruler 1, and the first scale line 11 is located at the edge of the first ruler 1. A second scale line 26 is arranged on the upper side of the second ruler 2, and the second scale line 26 is located at the edge of the first ruler 1. The ends of the first ruler 1 and the second ruler 2 are hingedly arranged, so that the first ruler 1 and the second ruler 2 can change the angle formed, which provides convenience for teaching staff to draw angular figures of different angles. When the first ruler 1 and the second ruler 2 are arranged in an overlapping manner, support can be provided for teaching staff to draw straight lines of different lengths.

[0023] like Figure 1 , Figure 4 As shown, in order to allow the first scale plate 1 and the second scale plate 2 to be stably overlapped and placed, the length of the second scale plate 2 is greater than that of the first scale plate 1, and an end plate 21 is provided at the end below the second scale plate 2, and the end plate 21 is provided near the free end of the first scale plate 1. A threaded hole 22 is provided on the end plate 21, and a limit bolt 23 is provided through the thread at the threaded hole 22, and the end of the limit bolt 23 can be inserted into the end of the first scale plate 1. When the two scale plates are overlapped and placed, the staff rotates the limit bolt 23 so that the end of the limit bolt 23 is inserted into the end plate 21. Under the action of the limit bolt 23, the two scale plates are relatively static and stably placed. The end plate 21 is provided to provide support for the first scale plate 1 to rotate relative to the second scale plate 2. Example 2

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the multifunctional geometric drawing tool includes a first ruler 1 and a second ruler 2. A connecting column 14 is vertically arranged at the end of the first ruler 1. The upper end of the connecting column 14 is threadedly sleeved with a pressing nut 16. A through hole is arranged at the end of the second ruler 2 and is arranged above the first ruler 1. The connecting column 14 is arranged through the through hole, and the pressing nut 16 can press the second ruler 2. A first scale line 11 is arranged on the upper side of the first ruler 1, and the first scale line 11 is located at the edge of the first ruler 1. A second scale line 26 is arranged on the upper side of the second ruler 2, and the second scale line 26 is located at the edge of the first ruler 1. The ends of the first ruler 1 and the second ruler 2 are hingedly arranged, so that the first ruler 1 and the second ruler 2 can change the angle formed, which provides convenience for teaching staff to draw angular figures of different angles. When the first ruler 1 and the second ruler 2 are arranged in an overlapping manner, support can be provided for teaching staff to draw straight lines of different lengths.

[0025] like Figure 1 , Figure 4 As shown, in order to allow the first scale plate 1 and the second scale plate 2 to be stably overlapped and placed, the length of the second scale plate 2 is greater than that of the first scale plate 1, and an end plate 21 is provided at the end below the second scale plate 2, and the end plate 21 is provided near the free end of the first scale plate 1. A threaded hole 22 is provided on the end plate 21, and a limit bolt 23 is provided through the thread at the threaded hole 22, and the end of the limit bolt 23 can be inserted into the end of the first scale plate 1. When the two scale plates are overlapped and placed, the staff rotates the limit bolt 23 so that the end of the limit bolt 23 is inserted into the end plate 21. Under the action of the limit bolt 23, the two scale plates are relatively static and stably placed. The end plate 21 is provided to provide support for the first scale plate 1 to rotate relative to the second scale plate 2.

[0026] like Figure 2 , Figure 3 As shown, in order to accurately draw angles of different angles, a reference plate 13 is provided above the ruler, and a perforation, an angle scale line 17 and a plurality of gripping holes 15 are provided on the reference plate 13. The perforation is located in the middle of the reference plate 13, and the angle scale line 17 is at the edge of the reference plate 13, and the central angle is 180°. The plurality of gripping holes 15 are evenly distributed along the circumference direction of the reference plate 13 and are located between the perforation and the angle scale line 17. A limiting column is provided on the side wall of the perforation, and a limiting groove 18 is provided on the connecting column 14. The reference plate 13 is located above the second ruler 2, and the connecting column 14 is provided through the perforation, and the limiting column is located in the limiting groove 18. Due to the provision of the reference plate 13, a reference can be provided for the relative rotation of the first ruler 1 and the second ruler 2, so as to draw angles of different angles, thereby improving the accuracy of teaching. The provision of the gripping hole 15 is convenient for the teaching staff to insert their palms into and hold the device, so as to hold the device. The limiting groove 18 and the limiting column are arranged to facilitate cooperation so that the reference plate 13 and the first scale plate 1 are relatively stationary.

[0027] like Figure 2 , Figure 5 As shown, the upper side of the first ruler 1 is provided with a first middle hole 12, and the upper side of the second ruler 2 is provided with a second middle hole 27, the second middle hole 27 is opposite to the first middle hole 12, and the side wall of the middle hole is opposite to the zero scale of the angle scale line 17. The setting of the middle hole is convenient for teaching staff to hold the brush through, and control the brush to move along the length direction of the middle hole to achieve straight line drawing. The side wall of the middle hole is opposite to the zero scale of the angle scale line 17, providing support for accurate angle drawing. Example 3

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the multifunctional geometric drawing tool includes a first ruler 1 and a second ruler 2. A connecting column 14 is vertically arranged at the end of the first ruler 1. The upper end of the connecting column 14 is threadedly sleeved with a pressing nut 16. A through hole is arranged at the end of the second ruler 2 and is arranged above the first ruler 1. The connecting column 14 is arranged through the through hole, and the pressing nut 16 can press the second ruler 2. A first scale line 11 is arranged on the upper side of the first ruler 1, and the first scale line 11 is located at the edge of the first ruler 1. A second scale line 26 is arranged on the upper side of the second ruler 2, and the second scale line 26 is located at the edge of the first ruler 1. The ends of the first ruler 1 and the second ruler 2 are hingedly arranged, so that the first ruler 1 and the second ruler 2 can change the angle formed, which provides convenience for teaching staff to draw angular figures of different angles. When the first ruler 1 and the second ruler 2 are arranged in an overlapping manner, support can be provided for teaching staff to draw straight lines of different lengths.

[0029] like Figure 1 , Figure 4 As shown, in order to allow the first scale plate 1 and the second scale plate 2 to be stably overlapped and placed, the length of the second scale plate 2 is greater than that of the first scale plate 1, and an end plate 21 is provided at the end below the second scale plate 2, and the end plate 21 is provided near the free end of the first scale plate 1. A threaded hole 22 is provided on the end plate 21, and a limit bolt 23 is provided through the thread at the threaded hole 22, and the end of the limit bolt 23 can be inserted into the end of the first scale plate 1. When the two scale plates are overlapped and placed, the staff rotates the limit bolt 23 so that the end of the limit bolt 23 is inserted into the end plate 21. Under the action of the limit bolt 23, the two scale plates are relatively static and stably placed. The end plate 21 is provided to provide support for the first scale plate 1 to rotate relative to the second scale plate 2.

[0030] like Figure 2 , Figure 3As shown, in order to accurately draw angles of different angles, a reference plate 13 is provided above the ruler, and a perforation, an angle scale line 17 and a plurality of gripping holes 15 are provided on the reference plate 13. The perforation is located in the middle of the reference plate 13, and the angle scale line 17 is at the edge of the reference plate 13, and the central angle is 180°. The plurality of gripping holes 15 are evenly distributed along the circumference direction of the reference plate 13 and are located between the perforation and the angle scale line 17. A limiting column is provided on the side wall of the perforation, and a limiting groove 18 is provided on the connecting column 14. The reference plate 13 is located above the second ruler 2, and the connecting column 14 is provided through the perforation, and the limiting column is located in the limiting groove 18. Due to the provision of the reference plate 13, a reference can be provided for the relative rotation of the first ruler 1 and the second ruler 2, so as to draw angles of different angles, thereby improving the accuracy of teaching. The provision of the gripping hole 15 is convenient for the teaching staff to insert their palms into and hold the device, so as to hold the device. The limiting groove 18 and the limiting column are arranged to facilitate cooperation so that the reference plate 13 and the first scale plate 1 are relatively stationary.

[0031] like Figure 2 , Figure 5 As shown, the upper side of the first ruler 1 is provided with a first middle hole 12, and the upper side of the second ruler 2 is provided with a second middle hole 27, the second middle hole 27 is opposite to the first middle hole 12, and the side wall of the middle hole is opposite to the zero scale of the angle scale line 17. The setting of the middle hole is convenient for teaching staff to hold the brush through, and control the brush to move along the length direction of the middle hole to achieve straight line drawing. The side wall of the middle hole is opposite to the zero scale of the angle scale line 17, providing support for accurate angle drawing.

[0032] like Figure 4 , Figure 5As shown, in order to use the device to draw a circle, a supporter 3 is also provided on the second ruler 2. The supporter 3 includes a sleeve 33 and a support plate 31. A buckle slide plate 32 is provided below the support plate 31. The sleeve 33 is provided at the end of the support plate 31. An alignment plate 34 is provided on the side of the sleeve 33. A buckle slide 25 is also provided on the upper side of the second ruler 2. The buckle slide 25 is provided along the length direction of the ruler, and an inlet and outlet groove 24 is provided at the end. An anti-skid layer is provided at the bottom of the buckle slide 25. The buckle slide plate 32 is installed in the buckle slide 25 through the inlet and outlet groove 24, and the anti-skid layer is squeezed. The end of the alignment plate 34 extends to the second scale line 26. When it is necessary to draw a circle, the teaching staff pushes the support plate 31 to move, adjusts the position of the sleeve 33, and moves the end of the alignment plate 34 to the corresponding scale. The brush is inserted through the sleeve 33, and the staff rotates the first ruler 1 and the second ruler 2 relatively for one circle, and the circle can be drawn. The arrangement of the buckle slide 25 and the buckle slide plate 32 facilitates the coordinated work to make the support 3 stable and movable on the second scale plate 2, providing convenience for drawing circles of different diameters. The arrangement of the anti-slip layer facilitates increasing the resistance of the support 3 to the movement of the second scale plate 2, providing support for drawing a complete circle.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Multifunctional geometric drawing tool, characterized by: The invention comprises a first ruler (1), a connecting column (14) is vertically arranged at the end of the first ruler (1), a reference plate (13) is relatively stationary sleeved on the connecting column (14), and a pressing nut (16) is threadedly sleeved on the upper end; the invention also comprises a second ruler (2), a through hole is arranged at the end of the second ruler (2), the connecting column (14) is arranged to pass through the through hole, and the reference plate (13) is located above the second ruler (2); a supporter (3) is also arranged on the second ruler (2), the supporter (3) comprises a sleeve (33) and a support plate (31), the support plate (31) is adjustably arranged on the second ruler (2), and the sleeve (33) is arranged at the end of the support plate (31).

2. The multifunctional geometric drawing tool according to claim 1, characterized in that: The length of the second ruler (2) is greater than that of the first ruler (1), and an end plate (21) is arranged at the end below the second ruler (2), and the end plate (21) is arranged adjacent to the free end of the first ruler (1).

3. The multifunctional geometric drawing tool according to claim 2, characterized in that: A threaded hole (22) is provided on the end plate (21), and a limit bolt (23) is threadedly provided through the threaded hole (22), and the end of the limit bolt (23) can be inserted into the end of the first scale plate (1).

4. The multifunctional geometric drawing tool according to claim 1, characterized in that: The reference disk (13) is provided with a perforation in the middle, and an angle scale line (17) is provided on the edge. A limiting column is provided on the side wall of the perforation. A limiting groove (18) is provided on the connecting column (14), and the limiting column is located in the limiting groove (18).

5. The multifunctional geometric drawing tool according to claim 4, characterized in that: The reference disk (13) is provided with a plurality of gripping holes (15), which are evenly distributed along the circumference of the reference disk (13) and are located between the perforations and the angle scale lines (17).

6. The multifunctional geometric drawing tool according to claim 4, characterized in that: The upper side surface of the first scale plate (1) is provided with a first middle hole (12) and a first scale line (11), and the first scale line (11) is located at the edge of the first scale plate (1); the upper side surface of the second scale plate (2) is provided with a second middle hole (27) and a second scale line (26), and the second middle hole (27) and the first middle hole (12) are opposite to each other, and the side wall of the middle hole is opposite to the zero scale of the angular scale line (17).

7. The multifunctional geometric drawing tool according to claim 6, characterized in that: The upper side of the second ruler (2) is also provided with a snap-on slide groove (25), which is arranged along the length direction of the ruler, and an entry and exit groove (24) is arranged at the end thereof, and an anti-slip layer is arranged at the bottom of the snap-on slide groove (25).

8. The multifunctional geometric drawing tool according to claim 7, characterized in that: A snap-on slide plate (32) is provided below the support plate (31), and the snap-on slide plate (32) is installed in the snap-on slide groove (25) through the entry and exit groove (24). An alignment plate (34) is provided on the side of the sleeve (33), and the end of the alignment plate (34) extends to the second scale line (26).

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