CN212499641U

CN212499641U - Curve drawing board for mathematical education

Info

Publication number: CN212499641U
Application number: CN202020850813.0U
Authority: CN
Inventors: 洛桑平措
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-09
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a curve drawing board for mathematical education in the teaching field, which comprises a connecting device, a connecting component and an arc drawing device, wherein the connecting device comprises a fixed length, a vacuum chuck and a rotating support post, the fixed length is rotationally connected with the vacuum chuck through the rotating support post, and the vacuum chuck and the rotating support post are both positioned below the fixed length; when drawing the line segment, through the scale that the scale with the movable ruler upper surface set up just can draw complete line segment, when drawing the circle, will the scale below vacuum chuck adsorbs and confirms the centre of a circle on the blackboard, through the adjustment the scale with the radius of circle is confirmed to the angle of opening and shutting of movable ruler, passes the chalk place the hole and just can draw complete circle on the blackboard to the chalk, and it is simpler to use, and a neotype multipurpose compasses is multi-purpose, can satisfy the teacher and go up various drawing requirements of class hour, and it is also more convenient to carry simultaneously.

Description

Curve drawing board for mathematical education

Technical Field

The utility model belongs to the technical field of the mathematics teaching aid, concretely relates to curve drawing board is used in mathematics teaching.

Background

Compasses are used for drawing circles or strings in mathematics and drawing, and are commonly used for drawing rulers and compasses. The compasses are usually made of metal and comprise two parts connected by a hinge, wherein the adjustment can be made.

At present, most of the existing telescopic structures are not reliable enough, shaking can occur during drawing, so that the drawing effect is not ideal, and meanwhile, the existing compasses are single in function, large in structure and inconvenient to carry.

When the existing compasses are used, the compasses are single in function and only can be used for drawing circles, and teachers often need to carry a plurality of drawing tools to draw pictures in class, so that the teaching quality is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a curve drawing board is used in mathematical education to solve the current compasses that proposes in the above-mentioned background art in the use, the function singleness of compasses only can be with drawing the circle, often the teacher need carry several plotting tool to draw when lessoning, leads to the not high problem of quality of giving lessons.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a curve drawing board is used in mathematics teaching, includes connecting device, links up subassembly and draws the arc device, connecting device includes scale, vacuum chuck and rotation pillar, the scale passes through rotate the pillar rotate connect in vacuum chuck, vacuum chuck with it all is located to rotate the pillar the below of scale, it includes axis of rotation, connecting block and connecting block A to link up the subassembly, the connecting block passes through the axis of rotation rotate connect in connecting block A, connecting block fixed connection in the scale, the connecting block is located the right side of scale, it includes the movable scale to draw the arc device, the hole is placed to the chalk has been seted up to the surface of movable scale, movable scale fixed connection in connecting block A, connecting block A is located the left side of movable scale.

Preferably, the rotating support columns are arranged into two sections, and the two sections of rotating support columns are rotatably connected through a rotating shaft.

Preferably, a rotating shaft is arranged in the middle of the rotating shaft and is rotatably connected to the connecting block through the rotating shaft, and the rotating shaft is fixedly connected to the connecting block A.

Preferably, the vacuum chuck is arranged at the left end of the fixed ruler, and the chalk placing hole is arranged at the right end of the movable ruler.

Preferably, the upper surfaces of the fixed ruler and the movable ruler are provided with scales.

As another preferred mode, the connecting block is tightly attached to the connecting block A.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a curve drawing board for mathematical education realizes a rule multi-purpose when drawing through setting up scale, movable ruler and axis of rotation, when the setting-out section, through the scale with the scale that the movable ruler upper surface set up just can draw complete line segment, when drawing the circle, will the scale below vacuum chuck adsorbs on the blackboard, through the adjustment the scale with the radius of circle is confirmed to the angle of opening and shutting of movable ruler, passes the chalk place the hole and just can draw complete circle on the blackboard, and one-hand operation just can draw the circle, compares current teaching compasses, and it is simpler to use, and neotype multi-purpose compasses both can be used for drawing the line segment, can be relatively easy drawing circular again, and a rule is multi-purpose, can satisfy the teacher and go up various drawing requirements when lesson, and it is also more convenient to carry simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a connection assembly of the present invention;

fig. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic structural view of a vacuum chuck of the present invention;

in the figure: 1. a connecting device; 11. sizing; 12. a vacuum chuck; 13. rotating the strut; 2. An engagement assembly; 21. a rotating shaft; 22. connecting blocks; 22. connecting a block A; 3. an arc drawing device; 31. moving the ruler; 32. and a chalk placing hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a curve drawing board for mathematical education, including connecting device 1, link up subassembly 2 and draw arc device 3, connecting device 1 includes scale 11, vacuum chuck 12 and rotation pillar 13, scale 11 rotates through rotation pillar 13 to be connected in vacuum chuck 12, vacuum chuck 12 all is located scale 11's below with rotation pillar 13, it includes axis of rotation 21 to link up subassembly 2, connecting block 22 and connecting block A23, connecting block 22 rotates through axis of rotation 21 to be connected in connecting block A23, connecting block 22 fixed connection is in scale 11, connecting block 22 is located scale 11's right side, draw arc device 3 including movable scale 31. The outer surface of the movable ruler 31 is provided with a chalk placing hole 32, the movable ruler 31 is fixedly connected with a connecting block A23, and the connecting block A23 is positioned on the left side of the movable ruler 31.

In this embodiment, the rotation support column 13 is designed in two segments, two segments of rotation support columns 13 are connected in a rotating mode through a rotating shaft, the upper segment rotation support column 13 is fixedly connected to the lower surface of the fixed scale 11, the lower segment rotation support column 13 is fixedly connected to the upper surface of the vacuum chuck 12, when the vacuum chuck 12 is adsorbed on a blackboard, the fixed scale 11 can rotate through the rotation support column 13, the circle center of the existing teaching compasses is determined through the needle head of the compasses, the existing teaching compasses are easy to slide during drawing, deviation of the drawn circle is easy to occur, and teaching quality is affected.

In the embodiment, the multipurpose teaching aid realizes one rule and multiple purposes during drawing through the fixed ruler 11, the movable ruler 31 and the rotating shaft 21, when the line is drawn, a complete line segment can be drawn through the scales arranged on the upper surfaces of the fixed ruler 11 and the movable ruler 31, when the fixed ruler 11 and the movable ruler 31 are in a straight line, a relatively long line segment can be drawn by using chalk to abut against the upper surfaces of the fixed ruler 11 and the movable ruler 31, when the circle is drawn, the vacuum suction cup 12 below the fixed ruler 11 is adsorbed on a blackboard, the radius of the circle is determined by adjusting the opening and closing angle of the fixed ruler 11 and the movable ruler 31, the chalk can be used for drawing a complete circle on the blackboard by passing through the chalk placing hole 32, the circle can be drawn by single-hand operation, compared with the existing teaching compasses, the multipurpose compasses are simpler to use, the novel multipurpose compasses can be used for drawing line segments, can be used for drawing circles relatively easily, and one rule has multiple purposes, can meet various drawing requirements of teachers in class and is convenient to carry.

Furthermore, the position of the rotating support column 13 is set into two sections, and the two sections of rotating support columns 13 are rotatably connected through a rotating shaft.

In this embodiment, the rotation support 13 is designed in two stages, the two rotation supports 13 are rotatably connected through a rotation shaft, the upper rotation support 13 is fixedly connected to the lower surface of the fixed scale 11, the lower rotation support 13 is fixedly connected to the upper surface of the vacuum chuck 12, and when the vacuum chuck 12 is attached to the blackboard, the fixed scale 11 can be rotated through the rotation support 13.

Further, a rotating shaft is arranged in the middle of the rotating shaft 21, the rotating shaft 21 is rotatably connected to the connecting block 22 through the rotating shaft, and the rotating shaft 21 is fixedly connected to the connecting block a 23.

In the present embodiment, the connecting block a23 is rotatably connected to the connecting block 22 via the rotating shaft 21, the connecting block 22 is fixedly connected to the fixed scale 11, the movable scale 31 is fixedly connected to the connecting block a23, and the fixed scale 11 and the movable scale 31 are rotatable with respect to each other, so that the radius of the circle can be determined by adjusting the opening and closing angle between the fixed scale 11 and the movable scale 31, and the larger the opening and closing angle between the fixed scale 11 and the movable scale 31 is, the smaller the opening and closing angle between the fixed scale 11 and the movable scale 31 is, and the smaller the radius of the circle is.

Further, the vacuum chuck 12 is located at the left end of the fixed scale 11, and the chalk placing hole 32 is located at the right end of the movable scale 31.

In the embodiment, when drawing a circle, the center of the circle is determined by the vacuum chuck 12, the vacuum chuck 12 is pressed close to the blackboard, the left end of the fixed ruler 11 is pressed towards the blackboard by hand, air in the vacuum chuck 12 is extruded to give out air, negative pressure is arranged in the vacuum chuck 12, the vacuum chuck 12 is adsorbed on the blackboard under the action of atmospheric pressure, the center of the circle is determined by the vacuum chuck 12, the center of the circle is not deviated when drawing the circle, the drawn circle has better effect, the teaching quality is indirectly improved, a chalk can be drawn on the blackboard by passing the chalk through the chalk placing hole 32 at the right end of the movable ruler 31, compared with the existing teaching compasses, the chalk replacement is more convenient, the novel multipurpose teaching compasses do not need to be fixed on the movable ruler 31, and the chalk replacement is more convenient,

further, the scales 4 are arranged on the upper surfaces of the fixed ruler 11 and the movable ruler 31.

In this embodiment, when setting out the line section, through the scale that fixed scale 11 and movable scale 31 upper surface set up, just can draw complete line segment, when fixed scale 11 and movable scale 31 are in a straight line, support at fixed scale 11 and movable scale 31 upper surface with the chalk, just can draw longer line segment, the teaching compasses before comparing, neotype teaching compasses can be one rule multi-purpose, can satisfy the various drawing requirements of teacher's class hour, it is also more convenient to carry simultaneously.

The connecting block 22 is tightly attached to the connecting block A23, so that the fixed ruler 11 and the movable ruler 31 do not slide in an offset manner when being unfolded at a certain angle.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when drawing a circle, the vacuum chuck 12 is pressed close to the blackboard, the left end of the fixed ruler 11 is pressed towards the blackboard by hand, the air in the vacuum chuck 12 is extruded to give vent to the air, the vacuum chuck 12 is internally provided with negative pressure, the vacuum chuck 12 is adsorbed on the blackboard under the action of atmospheric pressure, the circle center of the circle is determined by the vacuum chuck 12, after the circle center is determined, the radius of the circle can be determined by adjusting the opening and closing angle between the fixed ruler 11 and the movable ruler 31, the larger the opening and closing angle between the fixed ruler 11 and the movable ruler 31 is, the larger the radius of the circle is, the smaller the opening and closing angle between the fixed ruler 11 and the movable ruler 31 is, the smaller the radius of the circle is, after the circle radius is determined, the chalk is passed through the chalk placing hole 32 at the right end of the movable ruler 31, the drawing can be carried out on the blackboard, compared with the existing teaching compasses, the chalk replacement is more convenient, the novel multipurpose, it is better convenient to change the chalk, when the setting-out section, through the scale that fixed scale 11 and movable scale 31 upper surface set up, just can draw complete line segment, when fixed scale 11 and movable scale 31 are in a straight line, support at fixed scale 11 and movable scale 31 upper surface with the chalk, just can draw longer line segment, the teaching compasses before comparing, neotype teaching compasses can be a rule multi-purpose, can satisfy the teacher and go up various drawing requirements of class hour, it is also more convenient to carry simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A curve drawing board for mathematics teaching is characterized in that: the chalk holder comprises a connecting device (1), a connecting assembly (2) and an arc drawing device (3), wherein the connecting device (1) comprises a fixed scale (11), a vacuum sucker (12) and a rotating support column (13), the fixed scale (11) is connected with the vacuum sucker (12) in a rotating mode through the rotating support column (13), the vacuum sucker (12) and the rotating support column (13) are located below the fixed scale (11), the connecting assembly (2) comprises a rotating shaft (21), a connecting block (22) and a connecting block A (23), the connecting block (22) is connected with the connecting block A (23) in a rotating mode through the rotating shaft (21), the connecting block (22) is fixedly connected with the fixed scale (11), the connecting block (22) is located on the right side of the fixed scale (11), the arc drawing device (3) comprises a moving scale (31), and a chalk placing hole (32) is formed in the outer surface of the moving scale (31), the movable ruler (31) is fixedly connected to the connecting block A (23), and the connecting block A (23) is located on the left side of the movable ruler (31).

2. A curve drawing board for mathematics teaching as claimed in claim 1, wherein: the rotary supporting columns (13) are arranged into two sections, and the two sections of rotary supporting columns (13) are rotatably connected through a rotating shaft.

3. A curve drawing board for mathematics teaching as claimed in claim 1, wherein: the centre of axis of rotation (21) is provided with the pivot, axis of rotation (21) rotate through the pivot and connect in connecting block (22), axis of rotation (21) fixed connection is in connecting block A (23).

4. A curve drawing board for mathematics teaching as claimed in claim 1, wherein: the vacuum chuck (12) is positioned at the left end of the fixed ruler (11), and the chalk placing hole (32) is positioned at the right end of the movable ruler (31).

5. A curve drawing board for mathematics teaching as claimed in claim 1, wherein: the upper surfaces of the fixed ruler (11) and the movable ruler (31) are provided with scales.

6. A curve drawing board for mathematics teaching as claimed in claim 1, wherein: the connecting block (22) is tightly attached to the connecting block A (23).