Curve drawing device for high school mathematics teaching

Abstract

The utility model discloses a curve drawing device for high school mathematics teaching, and particularly relates to the field of curve drawing devices, which comprises a first drawing frame, one side of the first drawing frame is hinged with a second drawing frame, the inside of the first drawing frame is rotatably connected with a first sliding rod, and the outer side of the first sliding rod is slidably connected with a first sliding piece. The first sliding piece is slidably connected to the inner side of the first drawing frame, a first laser pen is inserted into the first sliding piece, a first fastening nail is in threaded connection with the interior of the first sliding piece, and the first fastening nail and the first laser pen are arranged in an attached mode. The first drawing frame and the second drawing frame are arranged, the first drawing frame and the second drawing frame are attached to the surface of the blackboard, the first sliding piece and the second sliding piece are adjusted to the needed positions, and the light intersection point of the first laser pen and the second laser pen is marked, so that various curves can be drawn in the mode that the light intersection point is connected into a line.

Description

Technical Field

[0001] The utility model relates to the technical field of curve drawing devices, and more specifically, to a curve drawing device for high school mathematics teaching. Background Art

[0002] In the teaching of high school mathematics, curves need to be drawn to facilitate the smooth progress of teaching. However, since the required curves are mostly arbitrary curves and there are also many curves with large curvatures, the existing curve drawing devices can only draw a small range of curves, so arbitrary curves cannot be drawn, the practicality is poor, and they cannot effectively assist teachers in teaching.

[0003] According to the Chinese utility model disclosure CN211764546U, a mobile curve drawing device for mathematics teaching includes a crossbeam, two vacuum suction cups are symmetrically installed on the back of the crossbeam, and a deflection rod is movably connected to the center position of the front side of the crossbeam through a pin. The chalk is placed in a clamping sleeve and tightened with a fastening bolt, and then the length of the telescopic rod is adjusted, so that different curves can be drawn on the blackboard by holding the grip rod to deflect the deflection rod, and the curve drawing accuracy is high. However, the curves that can be drawn by this setting of the curve drawing device are relatively single, and different curves, such as function curves, etc., cannot be drawn, and the applicability is poor. Therefore, in view of this problem, how to design a curve drawing device for high school mathematics teaching has become a problem that we currently need to solve. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a curve drawing device for high school mathematics teaching, by setting a first drawing frame and a second drawing frame, by attaching the first drawing frame and the second drawing frame to the surface of the blackboard, and adjusting the first sliding member and the second sliding member to the desired position, by marking the intersection of the light rays of the first laser pen and the second laser pen, a variety of curves can be drawn by connecting points into lines to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a curve drawing device for high school mathematics teaching, comprising a first drawing frame, a second drawing frame being hingedly connected to one side of the first drawing frame, a first sliding rod being rotatably connected to the inside of the first drawing frame, a first sliding member being slidably connected to the outside of the first sliding rod, the first sliding member being slidably connected to the inner side of the first drawing frame, a first laser pen being inserted into the inside of the first sliding member, a first fastening nail being threadedly connected to the internal thread of the first sliding member, the first fastening nail and the first laser pen being arranged in a fitted shape, a first ruler being fixedly installed on one side of the first drawing frame, a first position indicating member being fixedly installed on one side of the first sliding member, the first position indicating member being slidably connected to one side of the first ruler, and a first mounting block being fixedly installed on the top of the first sliding rod.

[0006] In a preferred embodiment, a second sliding rod is rotatably connected inside the second drawing frame, and a second mounting block is fixedly mounted on one end of the second sliding rod.

[0007] In a preferred embodiment, a second sliding member is slidably connected to the outer side of the second sliding rod, and the second sliding member is slidably connected to the inner side of the second drawing frame.

[0008] In a preferred embodiment, a second laser pen is inserted into the interior of the second sliding member, and a second fastening nail is threadedly connected to the interior of the second sliding member.

[0009] In a preferred embodiment, the second fastening pin and the second laser pen are arranged in a close-fitting manner, and a second position indicating member is fixedly mounted on one side of the second sliding member.

[0010] In a preferred embodiment, a second scale is fixedly mounted on one side of the second drawing frame, the second position indicator is slidably connected to one side of the second scale, and a fixing kit is rotatably connected to the outer side of the first drawing frame.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model sets a first drawing frame and a second drawing frame, attaches the first drawing frame and the second drawing frame to the surface of the blackboard, adjusts the first sliding member and the second sliding member to the desired position, and obtains the points on the curve by marking the intersection of the light beams of the first laser pen and the second laser pen. After marking all the points on the curve, various curves can be drawn by connecting the points into lines, thereby achieving the drawing of any curve;

[0013] 2. The utility model is provided with a fixing kit. After use, the second drawing frame is turned over to merge with the first drawing frame, and the fixing kit is rotated to cover the outside of the second drawing frame, so as to fix the second drawing frame to avoid damage caused by the second drawing frame being unfolded when not in use. At the same time, the first laser pen and the second laser pen can be taken out by loosening the first fastening nail and the second fastening nail, and can be replaced in time after the power is used up, thereby extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial structural sectional view of the utility model;

[0015] Figure 2 For this utility model Figure 1 A magnified view of the structure of part A;

[0016] Figure 3 For this utility model Figure 1 A magnified view of the structure of part B;

[0017] Figure 4 For this utility model Figure 1 Enlarged view of the C structure.

[0018] The accompanying drawings are marked as follows: 1. first drawing frame; 2. second drawing frame; 3. first sliding bar; 4. first sliding member; 5. first laser pen; 6. first fastening nail; 7. first ruler; 8. first position indicating member; 9. first mounting block; 10. second sliding bar; 11. second mounting block; 12. second sliding member; 13. second laser pen; 14. second fastening nail; 15. second position indicating member; 16. second ruler; 17. fixing kit. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Refer to the instruction manual Figure 1-3 ,like Figure 1 As shown, a curve drawing device for high school mathematics teaching according to an embodiment of the utility model comprises a first drawing frame 1, and a second drawing frame 2 is hingedly connected to one side of the first drawing frame 1. Figure 2As shown, the first drawing frame 1 is internally rotatably connected with a first slide bar 3, the outer side of the first slide bar 3 is slidably connected with a first slide member 4, the first slide member 4 is slidably connected to the inner side of the first drawing frame 1, the first laser pen 5 is inserted into the interior of the first slide member 4, the first slide member 4 is internally threadedly connected with a first fastening nail 6, the first fastening nail 6 and the first laser pen 5 are arranged in a close fit, a first scale 7 is fixedly installed on one side of the first drawing frame 1, a first position indicating member 8 is fixedly installed on one side of the first slide member 4, and the first position indicating member 8 is slidably connected to one side of the first scale 7, as shown in FIG. Figure 4 As shown, a first mounting block 9 is fixedly mounted on the top of the first slide bar 3. Figure 1 The second drawing frame 2 is rotatably connected with a second slide bar 10 inside, and a second mounting block 11 is fixedly mounted on one end of the second slide bar 10 .

[0021] It should be noted that, when drawing a curve, the first drawing frame 1 and the second drawing frame 2 are unfolded at a right angle and fitted with the blackboard, and the first sliding member 4 is lifted and lowered accordingly by pushing the first sliding rod 4. When the first sliding member 4 slides, the first position indicating member 8 is driven to slide. Since the surface of the first scale 7 is engraved with scales, the position of the first sliding member 4 is determined by observing the overlapping position of the first position indicating member 8 and the first scale 7. After the first sliding member 4 is adjusted to a suitable position, the first sliding member 4 is released. At this time, the first sliding member 4 is not The first slide member 4 is subjected to force and stops sliding due to the friction between the first slide bar 3, so that the first slide member 4 is maintained at the current position. The second slide member 12 is adjusted to the corresponding position in the same way, and the first laser pen 5 and the second laser pen 13 are turned on. At this time, there is an overlapping point between the lasers emitted by the first laser pen 5 and the second laser pen 13. The overlapping point is marked by closing the pen, and the remaining points of the curve are marked in the same way. After all the points are marked, the points are connected into lines to complete the drawing of the curve. In this way, the drawing of any curve can be realized, thereby improving the convenience of high school mathematics teaching.

[0022] Further, such as Figure 3 As shown, the outer side of the second slide bar 10 is slidably connected to the second slide member 12, the second slide member 12 is slidably connected to the inner side of the second drawing frame 2, the second laser pen 13 is inserted into the interior of the second slide member 12, the second slide member 12 is internally threadedly connected to the second fastening nail 14, the second fastening nail 14 and the second laser pen 13 are arranged in a close fit, a second position indicating member 15 is fixedly installed on one side of the second slide member 12, a second scale 16 is fixedly installed on one side of the second drawing frame 2, and the second position indicating member 15 is slidably connected to one side of the second scale 16, as shown in FIG. Figure 4 As shown, a fixing set 17 is rotatably connected to the outer side of the first drawing frame 1 .

[0023] It should be noted that, after use, the second drawing frame 2 is turned over to merge with the first drawing frame 1, and the fixing kit 17 is rotated to cover the outside of the second drawing frame 2, so as to complete the fixation of the second drawing frame 2 to avoid damage caused by the second drawing frame 2 being unfolded when not in use. At the same time, the first laser pen 5 and the second laser pen 13 can be taken out by loosening the first fastening nail 6 and the second fastening nail 14, and can be replaced in time after the power is used up, thereby extending the service life.

[0024] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0025] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A curve drawing device for high school mathematics teaching, comprising a first drawing frame (1), characterized in that: A second drawing frame (2) is hingedly connected to one side of the first drawing frame (1); a first sliding rod (3) is rotatably connected inside the first drawing frame (1); a first sliding member (4) is slidably connected to the outer side of the first sliding rod (3); the first sliding member (4) is slidably connected to the inner side of the first drawing frame (1); a first laser pen (5) is inserted into the interior of the first sliding member (4); a first fastening nail (6) is threadedly connected to the interior of the first sliding member (4); the first fastening nail (6) and the first laser pen (5) are arranged in a close-fitting manner; a first scale (7) is fixedly installed on one side of the first drawing frame (1); a first position indicating member (8) is fixedly installed on one side of the first sliding member (4); the first position indicating member (8) is slidably connected to one side of the first scale (7); and a first mounting block (9) is fixedly installed on the top of the first sliding rod (3).

2. A curve drawing device for high school mathematics teaching according to claim 1, characterized in that: The second drawing frame (2) is rotatably connected to a second sliding rod (10), and a second mounting block (11) is fixedly mounted on one end of the second sliding rod (10).

3. A curve drawing device for high school mathematics teaching according to claim 2, characterized in that: The outer side of the second sliding rod (10) is slidably connected to a second sliding member (12), and the second sliding member (12) is slidably connected to the inner side of the second drawing frame (2).

4. A curve drawing device for high school mathematics teaching according to claim 3, characterized in that: A second laser pen (13) is inserted into the interior of the second sliding member (12), and a second fastening nail (14) is threadedly connected to the interior of the second sliding member (12).

5. A curve drawing device for high school mathematics teaching according to claim 4, characterized in that: The second fastening pin (14) and the second laser pen (13) are arranged in a close-fitting manner, and a second position indicating member (15) is fixedly mounted on one side of the second sliding member (12).

6. A curve drawing device for high school mathematics teaching according to claim 5, characterized in that: A second scale (16) is fixedly mounted on one side of the second drawing frame (2), the second position indicating member (15) is slidably connected to one side of the second scale (16), and a fixing kit (17) is rotatably connected to the outer side of the first drawing frame (1).

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