Mathematical drawing device

Abstract

The utility model relates to the technical field of mathematical drawing, and particularly discloses a mathematical drawing device which comprises a bottom suction cup, a scale ring is fixed to the outer side wall of the bottom of the bottom suction cup, a middle column is fixed to the top end of the bottom suction cup, an outer rotating cap is arranged on the outer side wall of the middle column, and a cover cap is arranged at the top end of the middle column. The auxiliary positioning structure is arranged at the top end of the holding disc, and the auxiliary positioning structure is used for auxiliary fixing. According to the mathematical drawing device, through the arranged auxiliary positioning structure, the inserting column and the magnet are matched with the blackboard and the lantern ring, when the mathematical drawing device needs to be positioned in an auxiliary mode, the mathematical drawing device is not prone to falling off, and the mathematical drawing device is not prone to falling off. The end, away from the bottom suction cup, of the rotating block is fixed to the blackboard, the rotating block does not need to be pressed and fixed with excessive force during drawing, the rotating block is prevented from shifting in the drawing process, and drawing is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to mathematical drawing technical field, concretely is mathematical drawing device. BACKGROUND

[0002] With the progress of the times, technology is developing constantly, along with people's education constantly promotes, mathematics teaching has become compulsory course, in the face of mathematics teaching needs to draw a picture time, usually need to use ruler to assist teachers to draw a picture on the blackboard, so that students better to understand, in order to realize the function of multifunctional drawing, and facilitate the teaching work of teachers, put forward mathematical drawing device is particularly important.

[0003] The existing mathematical drawing device is simple to operate and convenient to draw, but still has the following defects in actual use: 1. When drawing, the teacher often needs to press the ruler with one hand to fix it, to prevent the ruler from moving when drawing lines, affecting the effect of drawing lines; 2. When drawing multiple angles at the same point, the drawing device needs to be adjusted repeatedly, which is not convenient. UTILITY MODEL CONTENT

[0004] The utility model aims at providing mathematical drawing device to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: mathematical drawing device, comprising: bottom suction disc, the outside wall of the bottom suction disc bottom is fixed with scale ring, the top of the bottom suction disc is fixed with middle column, the outside wall of the middle column is provided with outer rotating cap, the top of the middle column is provided with cap, the top of the cap is provided with grip disc:

[0006] Auxiliary positioning structure, the auxiliary positioning structure is arranged at the top of grip disc, and the auxiliary positioning structure is used for assisting the fixation of drawing device;

[0007] Rotating structure, the rotating structure is arranged outside the outer rotating cap, and the rotating structure is used for rotating the circle outside the outer rotating cap.

[0008] Preferably, the rotating structure is internally provided with an adjusting structure, the other end of the adjusting structure is provided with a connecting block, and the connecting block is internally provided with a receiving structure.

[0009] Preferably, the outside wall of the middle column is uniformly provided with external threads, the inside wall of the outer rotating cap is uniformly provided with internal threads, the middle column and the outer rotating cap are screw-connected, and the outside wall of the grip disc is uniformly provided with a plurality of gripping grooves.

[0010] Preferably, the auxiliary positioning structure comprises an insertion column arranged at the top of the grip disc, a magnetite arranged at the bottom end of the insertion column, and a metal block arranged in the middle column.

[0011] Preferably, the bottom end of the inserting column penetrates through the cover cap and the holding disc and extends to the inside of the middle column, the inserting column is in sliding connection with the cover cap and the holding disc, and the inserting column and the middle column are in magnetic attraction connection through the magnet and the metal block.

[0012] Preferably, the rotating structure comprises rotating grooves formed in the outer sidewall of the outer rotating cap, rotating rings rotatably connected to the inside of the rotating grooves, rotating blocks fixed to one side of the rotating rings, and sleeve rings fixed to one end of the rotating blocks.

[0013] Preferably, the rotating grooves are equidistantly distributed on the outer sidewall of the outer rotating cap, and the sleeve rings are in circular ring shape in the top view, and the top end of the rotating block is provided with scales on both sides.

[0014] Preferably, the adjusting structure comprises a main adjusting groove formed in one side of the outer sidewall of the rotating block, a bottom adjusting groove formed in the bottom end of the main adjusting groove, a top adjusting groove formed in the top end of the main adjusting groove, an adjusting slider arranged in the inside of the main adjusting groove, a clamping plate fixed to the outside of the adjusting slider, and an adjusting bolt screwedly connected to the inside of the adjusting slider.

[0015] Preferably, the top adjusting groove extends to the outside of the top end of the rotating groove, and the main adjusting groove and the adjusting slider are in sliding connection.

[0016] Preferably, the receiving structure comprises a receiving groove and an anti-falling protrusion, the rotating block and the receiving groove are in clamping connection, and the anti-falling protrusion is in hemispherical shape.

[0017] The utility model at least has the following beneficial effects:

[0018] 1. By setting up the auxiliary positioning structure, the inserting column and the magnet cooperate with the blackboard and the sleeve ring, so that the mathematics drawing device is fixed on the blackboard at the end far away from the bottom suction disc when auxiliary positioning is needed, and the drawing does not need to be pressed too hard to fix the rotating block, so that the drawing is more convenient.

[0019] 2. By setting up the rotating structure, the rotating grooves, the rotating rings and the rotating blocks are arranged in two symmetrical groups on the outer sidewall of the outer rotating cap, so that the mathematics drawing device can fix one rotating block on the blackboard and rotate the other rotating block to adjust the angle when drawing, without adjusting the whole drawing device, and the effect of the change of the angle can be directly demonstrated by rotating the other rotating block after fixing one rotating block, which is more convenient for students to understand.

[0020] 3. By setting up the adjusting structure, the main adjusting groove, the adjusting slider, the clamping plate and the adjusting bolt adjust the distance between the chalk and the bottom suction disc, so that the position of the chalk can be adjusted, and the mathematics drawing device is more convenient for drawing circles of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure diagram of the utility model;

[0022] Figure 2 It is the whole three-dimensional diagram of the utility model rotating structure unfolding;

[0023] Figure 3 It is the main view sectional view of the utility model;

[0024] Figure 4 It is the utility model Figure 3 It is the enlarged view of A in the middle;

[0025] Figure 5 It is the local sectional view of the utility model adjusting structure.

[0026] In the figure: 1, bottom suction disc; 2, scale ring; 3, middle column; 4, outer rotating cap; 5, cap; 6, holding disc; 7, auxiliary positioning structure; 701, insertion column; 702, lodestone; 703, metal block; 8, rotating structure; 801, rotating groove; 802, rotating ring; 803, rotating block; 804, sleeve ring; 9, adjusting structure; 901, main adjusting groove; 902, bottom adjusting groove; 903, top adjusting groove; 904, adjusting sliding block; 905, clamping plate; 906, adjusting bolt; 10, connecting block; 11, storage structure; 1101, storage clamping groove; 1102, anti-dropping protrusion. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0029] Embodiment one,

[0030] Mathematical drawing instrument, comprising:

[0031] The outer side wall of the bottom suction disc 1 at the bottom is fixed with a scale ring 2, the top end of the bottom suction disc 1 is fixed with a middle column 3, the outer side wall of the middle column 3 is provided with an outer rotating cap 4, the top end of the middle column 3 is provided with a cap 5, the top end of the cap 5 is provided with a holding disc 6: an auxiliary positioning structure 7 is arranged at the top end of the holding disc 6, the auxiliary positioning structure 7 is used for auxiliary fixing, the inside of a rotating structure 8 is provided with an adjusting structure 9, the other end of the adjusting structure 9 is provided with a connecting block 10, the inside of the connecting block 10 is provided with a receiving structure 11, the outer side wall of the middle column 3 is uniformly provided with external threads, the inner side wall of the outer rotating cap 4 is uniformly provided with internal threads, the middle column 3 and the outer rotating cap 4 are threadedly connected, and the outer side wall of the holding disc 6 is uniformly provided with a grabbing groove.

[0032] Among them, the auxiliary positioning structure 7 includes an insertion column 701 arranged at the top end of the holding disc 6, a magnetite 702 arranged at the bottom end of the insertion column 701, and a metal block 703 arranged in the middle column 3, the bottom end of the insertion column 701 penetrates through the cap 5 and the holding disc 6 and extends into the inside of the middle column 3, the insertion column 701 and the cap 5 and the holding disc 6 are designed in sliding connection, and the insertion column 701 and the middle column 3 are designed in magnetic attraction connection through the magnetite 702 and the metal block 703.

[0033] In addition, the receiving structure 11 includes a receiving card groove 1101 and a anti-dropping protrusion 1102, the rotating block 803 and the receiving card groove 1101 are designed in clamping connection, and the anti-dropping protrusion 1102 is designed in semispherical shape.

[0034] Through the auxiliary positioning structure 7, the insertion column 701 is directly inserted into the holding disc 6 for storage when it is not needed, and the insertion column 701 is pulled out for auxiliary fixing, the insertion column 701 is inserted into the inside of the sleeve ring 804, and the magnetite 702 at the bottom end of the insertion column 701 is adsorbed on the blackboard to complete the auxiliary positioning, and through the cooperation of the insertion column 701, the magnetite 702, the blackboard and the sleeve ring 804, the rotating block 803 is fixed on the blackboard away from the bottom suction disc 1 when the mathematical drawing device needs auxiliary positioning, at this time, the drawing does not need to be pressed too hard to fix the rotating block 803, so as to prevent the rotating block 803 from deviating during drawing, and the drawing is more convenient.

[0035] According to the above embodiment, embodiment two,

[0036] It should be noted that the rotating structure 8 is arranged on the outer side of the outer rotating cap 4, and the rotating structure 8 can rotate around the outer side wall of the outer rotating cap 4.

[0037] Among them, the rotating structure 8 includes a rotating groove 801 opened in the outer side wall of the outer rotating cap 4, a rotating ring 802 rotatably connected in the inside of the rotating groove 801, a rotating block 803 fixed on one side of the rotating ring 802, and a sleeve ring 804 fixed on one end of the rotating block 803.

[0038] In addition, the rotating grooves 801 are arranged at equal intervals on the outer sidewall of the outer rotating cap 4, and the top view of the sleeve ring 804 is in the shape of a ring, and the top end of the rotating block 803 is provided with a scale on both sides.

[0039] The rotating structure 8 is arranged, so that the rotating block 803 is accommodated in the accommodating structure 11 when it is not needed to be separated, and can be directly pulled out by rotating one of them when it is needed to be separated. The rotating grooves 801, the rotating ring 802 and the rotating block 803 are arranged in two symmetrical groups on the outer sidewall of the outer rotating cap 4, so that the mathematical drawing device can be used to fix one of the rotating blocks 803 on the blackboard by the inserting column 701, and then the other rotating block 803 is rotated to adjust the angle, without the need to adjust the whole drawing device. After one of the rotating blocks 803 is fixed, the other rotating block 803 is directly rotated to demonstrate the effect of the change of the angle, which is more convenient for students to understand.

[0040] According to the above embodiment, embodiment three,

[0041] It should be noted that the adjusting structure 9 comprises a main adjusting groove 901 arranged on one side of the outer sidewall of the rotating block 803, a bottom adjusting groove 902 arranged at the bottom end of the main adjusting groove 901, a top adjusting groove 903 arranged at the top end of the main adjusting groove 901, an adjusting sliding block 904 arranged in the main adjusting groove 901, a clamping plate 905 fixed outside the adjusting sliding block 904, and an adjusting screw 906 threadedly connected inside the adjusting sliding block 904.

[0042] The top adjusting groove 903 extends to the outside of the top end of the rotating groove 801, and the main adjusting groove 901 and the adjusting sliding block 904 are in sliding connection.

[0043] The adjusting structure 9 is arranged, so that when it is needed to adjust the position of the adjusting sliding block 904, the adjusting screw 906 is rotated to make the bottom end of the adjusting screw 906 no longer abut against the bottom adjusting groove 902. After the adjusting sliding block 904 is adjusted to the appropriate position, the adjusting screw 906 is screwed to abut against the bottom end of the bottom adjusting groove 902. When it is needed to clamp the chalk, the clamping plate 905 is pried open to put the chalk in. The main adjusting groove 901, the adjusting sliding block 904, the clamping plate 905 and the adjusting screw 906 adjust the distance between the chalk and the bottom suction cup 1, so that the mathematical drawing device is convenient to adjust the position of the chalk, and is more convenient to draw circles of different sizes.

[0044] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A mathematical drawing device, comprising: a bottom suction disc (1), the outer side wall of the bottom of the bottom suction disc (1) is fixed with a scale ring (2), the top end of the bottom suction disc (1) is fixed with a middle column (3), the outer side wall of the middle column (3) is provided with an outer rotating cap (4), the top end of the middle column (3) is provided with a cap (5), the top end of the cap (5) is provided with a holding disc (6); characterized in that: an auxiliary positioning structure (7) is arranged at the top end of the holding disc (6), and the auxiliary positioning structure (7) is used for auxiliary fixing of the drawing device; a rotating structure (8) is arranged outside the outer rotating cap (4), and the rotating structure (8) is used for rotating a circle outside the outer side wall of the outer rotating cap (4).

2. The mathematical plotter of claim 1, wherein: The inside of the rotating structure (8) is provided with an adjusting structure (9), the other end of the adjusting structure (9) is provided with a connecting block (10), and the inside of the connecting block (10) is provided with a receiving structure (11).

3. The mathematical plotter of claim 1, wherein: The outer side wall of the middle column (3) is uniformly provided with external threads, the inner side wall of the outer rotating cap (4) is uniformly provided with internal threads, the middle column (3) and the outer rotating cap (4) are threadedly connected, and the outer side wall of the holding disc (6) is uniformly provided with a grabbing groove.

4. The mathematical plotter of claim 1, wherein: The auxiliary positioning structure (7) comprises an insertion column (701) arranged at the top end of the holding disc (6), a magnetite (702) arranged at the bottom end of the insertion column (701), and a metal block (703) arranged in the middle column (3).

5. The mathematical plotter of claim 4, wherein: The bottom end of the insertion column (701) penetrates through the cap (5) and the holding disc (6) and extends to the inside of the middle column (3), the insertion column (701) and the cap (5) and the holding disc (6) are in sliding connection design, and the insertion column (701) and the middle column (3) are in magnetic attraction connection design through the magnetite (702) and the metal block (703).

6. The mathematical plotter of claim 2, wherein: The rotating structure (8) comprises a rotating groove (801) formed in the outer side wall of the outer rotating cap (4), a rotating ring (802) rotatably connected to the inside of the rotating groove (801), a rotating block (803) fixed to one side of the rotating ring (802), and a sleeve ring (804) fixed to one end of the rotating block (803).

7. The mathematical plotter of claim 6, wherein: The rotating groove (801) is designed to be equally spaced on the outer side wall of the outer rotating cap (4), and the top view of the sleeve ring (804) is designed to be a circular ring, wherein the top end of the rotating block (803) is provided with scales on both sides.

8. The mathematical plotter of claim 2, wherein: The adjusting structure (9) comprises a main adjusting groove (901) formed in one side of the outer side wall of the rotating block (803), a bottom adjusting groove (902) formed at the bottom end of the main adjusting groove (901), a top adjusting groove (903) formed at the top end of the main adjusting groove (901), an adjusting sliding block (904) arranged in the main adjusting groove (901), a clamping plate (905) fixed to the outside of the adjusting sliding block (904), and an adjusting screw (906) threadedly connected to the inside of the adjusting sliding block (904).

9. The mathematical plotter of claim 8, wherein: The top adjusting groove (903) extends to the outside of the top end of the rotating groove (801), and the main adjusting groove (901) and the adjusting sliding block (904) are in sliding connection design.

10. The mathematical plotter of claim 6, wherein: The storage structure (11) comprises a storage card slot (1101) and a anti-off convex (1102), the rotating block (803) and the storage card slot (1101) are connected in a clamping mode, and the anti-off convex (1102) is designed in a semispherical mode.

Images