Hyperbola drawing set ruler

Abstract

The utility model discloses a hyperbola drawing set ruler which comprises at least three drawing assemblies, and each drawing assembly comprises a hyperbola ruler body and a progressive line ruler body which are arranged in a split mode. A hyperbola outer contour is arranged on the left side of the hyperbola ruler body, a splicing outer contour is arranged on the right side of the progressive line ruler body, and an asymptote outer contour is arranged on the left side of the progressive line ruler body; the hyperbola outer contour protrudes towards the left side, the splicing outer contour sinks towards the left side, and the hyperbola outer contour and the splicing outer contour are matched in shape; the sizes of openings of the hyperbolic outer contours of all the drawing assemblies are different. According to the utility model, the drawing quality and drawing efficiency of students in an examination room can be improved, and the use is simple and convenient.

Description

Technical Field

[0001] The utility model relates to drawing stationery, in particular to a set of hyperbola drawing rulers. Background Art

[0002] At the stage of gradual implementation of the new college entrance examination, hyperbola has gradually become an important part of the analytic geometry part of the college entrance examination, and its frequency in answering questions has gradually increased. In the new college entrance examination, the eccentricity of the hyperbola is usually unknown. When answering questions, students first need to predict the state of the hyperbola. Generally, there are three states of hyperbola: The students were asked to draw a hyperbola graph based on the predicted state, and then analyze and verify the probability. If the analysis showed that the predicted state was incorrect, they would need to re-predict and re-draw the graph. However, during this process, students often struggled with the quality of their hyperbola graphs, which affected their efficiency.

[0003] CN1559809A discloses a template capable of drawing a variety of function curves. One end of the template is a semicircular semicircular meter, and the other three sides serve as scales. There are multiple curve mold holes in the middle, and the positions of the mold holes can be changed. Using the contours of different mold holes, a variety of function curves can be drawn, such as: circle, ellipse, parabola, hyperbola, power function line, exponential function line y=ax, sine line y=sinx, tangent line y=tgx, etc. For some of the curves to be drawn, the coordinate axis is marked on the edge of the mold hole, or the scale of the coordinate axis is calibrated, as well as the position of the focus, directrix, and asymptote. There is no doubt that the technical solution disclosed in the above patent document is a useful attempt in the relevant technical field, but the template integrates too many curves, and the usable part of the hyperbola and asymptote is relatively small, which is not convenient for analyzing the positional relationship between a general straight line and a hyperbola. In addition, the template takes up a lot of space and is not convenient for carrying. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a hyperbola drawing ruler set, which can improve students' drawing quality and efficiency in the examination room and is easy to use.

[0005] The utility model provides a hyperbola drawing ruler set, comprising at least three groups of drawing components, each group of the drawing components comprising a hyperbola ruler body and an asymptote ruler body which are separately arranged; a hyperbola outer contour is arranged on the left side of the hyperbola ruler body, a spliced ​​outer contour is arranged on the right side of the asymptote ruler body, and an asymptote outer contour is arranged on the left side of the asymptote ruler body; the hyperbola outer contour is convex toward the left side, the spliced ​​outer contour is concave toward the left side, and the hyperbola outer contour is conformally matched with the spliced ​​outer contour; the opening size of the hyperbola outer contour of each group of the drawing components is different.

[0006] Furthermore, the three groups of drawing components are respectively a first drawing component, a second drawing component and a third drawing component, the opening of the hyperbolic outer contour of the first drawing component is larger than the opening of the hyperbolic outer contour of the second drawing component, and the opening of the hyperbolic outer contour of the second drawing component is larger than the opening of the hyperbolic outer contour of the third drawing component.

[0007] Furthermore, the slope of the asymptotic outer contour of the first drawing component is greater than 1, the slope of the asymptotic outer contour of the second drawing component is equal to 1, and the slope of the asymptotic outer contour of the first drawing component is less than 1.

[0008] Furthermore, a horizontal coordinate reference line is provided at the middle of the hyperbola ruler body and the middle of the asymptotic ruler body of each group of the drawing components.

[0009] Furthermore, the right side of the hyperbola ruler of each group of the drawing components extends rightward to form a widened portion, and the upper and lower sides of the widened portion are provided with cut corners.

[0010] Furthermore, the thickness of the middle portion of the hyperbolic ruler body is greater than the thickness of the left and right sides of the hyperbolic ruler body, and the center of gravity of the hyperbolic ruler body is not located at the midpoint of the horizontal coordinate reference line of the hyperbolic ruler body; the thickness of the middle portion of the asymptotic ruler body is greater than the thickness of the left and right sides of the asymptotic ruler body, and the center of gravity of the asymptotic ruler body is not located at the midpoint of the horizontal coordinate reference line of the asymptotic ruler body.

[0011] Furthermore, both the hyperbolic ruler body and the asymptotic ruler body are provided with a handle structure.

[0012] The beneficial effects of the utility model are:

[0013] (1) The hyperbola drawing ruler set of the utility model can improve the drawing quality and efficiency of students in the examination room and is easy to use;

[0014] (2) When the utility model is drawing an asymptote, the asymptote ruler body and the hyperbola ruler body are spliced ​​together. The hyperbola ruler body can provide support for the asymptote ruler body during drawing, and can prevent the asymptote ruler body from being deformed during drawing due to the narrow and long shape of the asymptote ruler body;

[0015] (3) The asymptote ruler and hyperbola ruler of each drawing assembly of the present invention are split structures and can be stacked together when carried and stored, taking up little space and being easy to carry. In addition, the outer contours of the asymptote and hyperbola of each drawing assembly do not affect each other. Different sizes of rulers can be set for different asymptote slopes and hyperbola eccentricities, ensuring that the available parts of the hyperbola and asymptote can meet the needs, which is conducive to analyzing the positional relationship between general straight lines and hyperbolas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] The markings in the accompanying drawings are as follows: 1a-first drawing component, 1b-second drawing component, 1c-third drawing component, 101-hyperbolic ruler body, 102-asymptotic ruler body, 103-hyperbolic outer contour, 104-spliced ​​outer contour, 105-asymptotic outer contour, 106-horizontal coordinate reference line, 107-widened part, 108-cut corner, 109-handle structure. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 As shown, a hyperbola drawing ruler set in this embodiment includes at least three groups of drawing components, each group of the drawing components includes a hyperbola ruler body 101 and an asymptote ruler body 102 arranged separately; a hyperbola outer contour 103 is provided on the left side of the hyperbola ruler body 101, a spliced ​​outer contour 104 is provided on the right side of the asymptote ruler body 102, and an asymptote outer contour 105 is provided on the left side of the asymptote ruler body 102; the hyperbola outer contour 103 is convex toward the left side, the spliced ​​outer contour 104 is concave toward the left side, and the hyperbola outer contour 103 is conformally matched with the spliced ​​outer contour 104; the opening size of the hyperbola outer contour 103 of each group of the drawing components is different.

[0021] In this embodiment, the three groups of drawing components are respectively a first drawing component 1a, a second drawing component 1b and a third drawing component 1c. The opening of the hyperbolic outer contour 103 of the first drawing component 1a is larger than the opening of the hyperbolic outer contour 103 of the second drawing component 1b, and the opening of the hyperbolic outer contour 103 of the second drawing component 1b is larger than the opening of the hyperbolic outer contour 103 of the third drawing component 1c. For example, the eccentricities of the hyperbolic outer contours 103 of the first drawing component 1a, the second drawing component 1b and the third drawing component 1c can be respectively as well as

[0022] In this embodiment, the slope of the asymptotic outer contour 105 of the first drawing component 1a is greater than 1 (for example, 2), the slope of the asymptotic outer contour 105 of the second drawing component 1b is equal to 1, and the slope of the asymptotic outer contour 105 of the first drawing component 1a is less than 1 (for example, ).

[0023] In this embodiment, the middle of the hyperbola scale body 101 and the middle of the asymptotic scale body of each group of the drawing components are provided with a horizontal coordinate reference line 106. The horizontal coordinate reference line 106 can be used to correspond to the horizontal coordinate position of the coordinate system during drawing, which is conducive to improving the drawing quality.

[0024] In this embodiment, the right side of the hyperbolic ruler 101 of each group of drawing components extends rightward to form a widened portion 107. The widened portion 107 is provided with chamfers 108 on both the upper and lower sides. The widened portion 107 prevents the hyperbolic ruler 101 from becoming narrow and elongated. The increased width prevents deformation of the hyperbolic ruler 101 during drawing. The sharp corners of the chamfers 108 are chamfered to prevent accidental injury to students.

[0025] In this embodiment, the thickness of the middle portion of the hyperbolic ruler body 101 is greater than the thickness of the left and right sides of the hyperbolic ruler body 101, and the center of gravity of the hyperbolic ruler body 101 is not located at the midpoint of the horizontal coordinate reference line 106 of the hyperbolic ruler body 101; the thickness of the middle portion of the asymptotic ruler body 102 is greater than the thickness of the left and right sides of the asymptotic ruler body 102, and the center of gravity of the asymptotic ruler body 102 is not located at the midpoint of the horizontal coordinate reference line 106 of the asymptotic ruler body 102.

[0026] The center of gravity of the hyperbolic ruler body 101 and the asymptotic ruler body 102 are not located at the midpoint of the horizontal coordinate reference line 106, causing the center of gravity to be biased to the left or right. Furthermore, both the hyperbolic ruler body 101 and the asymptotic ruler body 102 are thicker in the middle and thinner on the left and right sides. Therefore, the front surfaces of the hyperbolic ruler body 101 and the asymptotic ruler body 102 are flat, ensuring they can fit snugly on test papers or draft paper. The back surfaces of both the hyperbolic ruler body 101 and the asymptotic ruler body 102 are convex in the middle and have inclined surfaces on the left and right sides. If a ruler body accidentally falls to the ground, it is easier to pick it up with the back surface facing the ground.

[0027] In this embodiment, both the hyperbolic ruler body 101 and the asymptotic ruler body 102 are provided with a handle structure 109. The handle structure 109 is provided on the reverse side of the hyperbolic ruler body 101 and the asymptotic ruler body 102. If the ruler body accidentally falls to the ground, the handle structure can be used to pick up the ruler body if it is facing the ground.

[0028] In the new college entrance examination, the eccentricity of the hyperbola is usually unknown. When answering questions, students first need to predict the state of the hyperbola. Generally, there are three types of hyperbola states: The opening is large, the opening is medium, and the opening is small. Then, a hyperbola image is drawn according to the predicted hyperbola state. Finally, the possibility is analyzed and verified. If the predicted hyperbola state is wrong, the prediction and drawing need to be re-done. The hyperbola drawing ruler provided in this embodiment can improve the drawing quality and efficiency of students in the examination room. It is easy to use and includes the following steps when drawing:

[0029] S1. Draw the hyperbola and asymptote in the positive direction of the horizontal coordinate of the coordinate axis;

[0030] First, based on the predicted state of the hyperbola, a set of drawing components is selected. Then, the components are spliced ​​together, with the hyperbola scale body 101 positioned to the right of the asymptote scale body. After splicing, the vertex of the asymptote outline 105 of the asymptote scale body is placed against the origin of the coordinate axis, with the abscissa reference line 106 aligning with the positive abscissa direction of the coordinate axis. This allows the asymptote outline 105 to be plotted to obtain the asymptote on the positive abscissa side. Subsequently, the asymptote scale body is removed, leaving the hyperbola scale body 101 unchanged in position. The hyperbola outline 103 of the hyperbola scale body 101 is then used to plot the hyperbola on the positive abscissa side.

[0031] S2. Draw the hyperbola and asymptote in the negative direction of the horizontal coordinate of the coordinate axis;

[0032] Since the hyperbola and its asymptotes are both axisymmetric, the drawing components from step S1 are spliced ​​together, with hyperbola scale body 101 positioned to the left of the asymptote scale body. After splicing, the vertex of the asymptote outer contour 105 of the asymptote scale body is placed against the origin of the coordinate axis, with the abscissa reference line 106 coinciding with the negative abscissa direction of the coordinate axis. This allows the asymptote on the negative abscissa side to be drawn using asymptote outer contour 105. Subsequently, the asymptote scale body is removed, leaving the hyperbola scale body 101 in place. The hyperbola outer contour 103 of the hyperbola scale body 101 is then used to draw the hyperbola on the negative abscissa side.

[0033] Since the asymptotic ruler body and the hyperbola ruler body 101 are spliced ​​together when drawing an asymptote, the hyperbola ruler body 101 can provide support for the asymptotic ruler body during drawing, thereby preventing the asymptotic ruler body from being deformed during drawing due to the narrow and long shape of the asymptotic ruler body.

[0034] The asymptote and hyperbola rulers 101 of each drawing component are separate structures that can be stacked together for transport and storage, taking up minimal space and making them easy to carry. Furthermore, the asymptote and hyperbola outer contours 105 and 103 of each drawing component do not interfere with each other. Different ruler sizes can be configured for different asymptote slopes and hyperbola eccentricities, ensuring that the available areas of the hyperbola and asymptote meet requirements, facilitating analysis of the positional relationship between general straight lines and hyperbolas.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A set of rulers for drawing hyperbolas, characterized by: The invention comprises at least three groups of drawing components, each group of the drawing components comprises a hyperbolic ruler body and an asymptotic ruler body which are separately arranged; a hyperbolic outer contour is arranged on the left side of the hyperbolic ruler body, a spliced ​​outer contour is arranged on the right side of the asymptotic ruler body, and an asymptotic outer contour is arranged on the left side of the asymptotic ruler body; the hyperbolic outer contour is convex toward the left side, the spliced ​​outer contour is concave toward the left side, and the hyperbolic outer contour is conformally matched with the spliced ​​outer contour; the opening size of the hyperbolic outer contour of each group of the drawing components is different.

2. The hyperbola drawing ruler set according to claim 1, characterized in that: The three groups of drawing components are respectively a first drawing component, a second drawing component and a third drawing component. The opening of the hyperbolic outer contour of the first drawing component is larger than the opening of the hyperbolic outer contour of the second drawing component. The opening of the hyperbolic outer contour of the second drawing component is larger than the opening of the hyperbolic outer contour of the third drawing component.

3. The hyperbola drawing ruler set according to claim 2, characterized in that: The slope of the asymptotic outer contour of the first drawing component is greater than 1, the slope of the asymptotic outer contour of the second drawing component is equal to 1, and the slope of the asymptotic outer contour of the first drawing component is less than 1.

4. The hyperbola drawing ruler set according to claim 1, characterized in that: A horizontal coordinate reference line is provided at the middle of the hyperbola ruler body and the middle of the asymptotic ruler body of each group of the drawing components.

5. The hyperbola drawing ruler set according to any one of claims 1 to 4, characterized in that: The right side of the hyperbolic ruler of each group of the drawing components extends rightward to form a widened portion, and the upper and lower sides of the widened portion are both provided with cut corners.

6. The hyperbola drawing ruler set according to claim 4, characterized in that: The thickness of the middle portion of the hyperbolic ruler body is greater than the thickness of the left and right sides of the hyperbolic ruler body, and the center of gravity of the hyperbolic ruler body is not located at the midpoint of the horizontal coordinate reference line of the hyperbolic ruler body; the thickness of the middle portion of the asymptotic ruler body is greater than the thickness of the left and right sides of the asymptotic ruler body, and the center of gravity of the asymptotic ruler body is not located at the midpoint of the horizontal coordinate reference line of the asymptotic ruler body.

7. The hyperbola drawing ruler set according to claim 1, characterized in that: The hyperbolic ruler body and the asymptotic ruler body are both provided with a handle structure.

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