Convenient drawing ruler for positive equiaxed mapping

Abstract

The utility model relates to the technical field of hand drawing auxiliary tools, and discloses a convenient drawing ruler for positive equiaxed mapping, which comprises a straight ruler, and a protractor; the equiaxed line drawing unit is arranged on the ruler and is used for drawing lines of an equiaxed three-dimensional diagram; the equiaxed line measuring and marking unit comprises a three-dimensional coordinate axis and two three-dimensional coordinate axis parallel lines which are symmetrically distributed relative to the three-dimensional coordinate axis; the three-dimensional coordinate axis parallel line and the three-dimensional coordinate axis are respectively provided with a through opening on the ruler; the ruler and the protractor are integrally connected, and a protractor positioning hole is formed in the circle center of the protractor. According to the utility model, the protractor, the ruler, the three-dimensional coordinate system and the parallel lines of the three-dimensional coordinate axis are integrated together, so that not only can the requirement of shortening the time for drawing a three-dimensional figure be met, but also the drawn three-dimensional figure can be more standard, and an ideal three-dimensional effect can be achieved. And the drawing efficiency and precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hand-drawing auxiliary tool technical field, concretely relates to a convenient drawing ruler for orthographic drawing. BACKGROUND

[0002] When drawing orthographic drawing, it is time-consuming and difficult, and a three-dimensional coordinate system must be drawn first. First, the three-dimensional coordinate system is drawn by protractor and set square, which is time-consuming and time-consuming.

[0003] Secondly, many students draw three-dimensional figures that are not standard, and the reason is that they do not accurately measure the angle between the axes when drawing the three-dimensional coordinate system.

[0004] Thirdly, many students draw three-dimensional figures with poor three-dimensional effect, and the reason is that they always draw non-parallel lines when drawing the parallel lines of the three-dimensional coordinate axis, resulting in poor three-dimensional effect.

[0005] Fourthly, most of the rulers on the market are used to draw various mathematical images, which cannot meet the needs of drawing three-dimensional structure figures.

[0006] Therefore, a ruler that can quickly and conveniently draw three-dimensional figures is designed to meet the needs of high school students. CONTENT OF THE UTILITY MODEL

[0007] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0008] A convenient drawing ruler for orthographic drawing, comprising a ruler; and a protractor; an isometric line drawing unit arranged on the ruler for drawing the lines of an isometric three-dimensional figure.

[0009] As a preferred embodiment of the utility model, the isometric line drawing unit comprises a three-dimensional coordinate axis and two three-dimensional coordinate axis parallel lines symmetrically distributed about the three-dimensional coordinate axis.

[0010] As a preferred embodiment of the utility model, the three-dimensional coordinate axis parallel lines and the three-dimensional coordinate axis are both provided with openings on the ruler.

[0011] As a preferred embodiment of the utility model, the ruler and the protractor are integrally connected, and the center of the protractor is provided with a protractor positioning hole.

[0012] As a preferred embodiment of the utility model, the ruler and the protractor are integrally connected, and the center of the protractor is provided with a protractor positioning hole.

[0013] As a preferred embodiment of the utility model, the angle between the three-dimensional coordinate axis parallel lines and the three-dimensional coordinate axis is 120°.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model integrates the protractor, the ruler, the three-dimensional coordinate system and the parallel lines of three-dimensional coordinate axis together, can not only meet the demand of shortening the time of drawing the three-dimensional figure, but also can make the drawn three-dimensional figure more standard and achieve ideal three-dimensional effect, improve drawing efficiency and precision.

[0016] The specific embodiments of the utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0017] In the drawings:

[0018] Figure 1 It is whole structure schematic diagram of the utility model.

[0019] In the drawing: 1, ruler;2, protractor;3, protractor positioning hole;4, three-dimensional coordinate axis;5, three-dimensional coordinate axis parallel line;6, scale value. PREFERRED EMBODIMENT

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model.

[0021] As Figure 1 Indicated, a positive isohedral drawing ruler, including ruler 1;And protractor 2;Isometric line drawing unit, set up on ruler 1, for drawing isometric three-dimensional figure line.

[0022] As Figure 1 Indicated, in specific embodiment, isometric line drawing unit includes three-dimensional coordinate axis 4 and two three-dimensional coordinate axis parallel lines 5 about three-dimensional coordinate axis 4 symmetrical distribution.

[0023] As Figure 1 Indicated, further, three-dimensional coordinate axis parallel line 5 and three-dimensional coordinate axis 4 are all opened mouth shape on ruler 1, and ruler 1 and protractor 2 are integrally connected, and the center position of protractor 2 is opened with protractor positioning hole 3, and the corresponding scale value 6 is printed on ruler 1 and protractor 2, and the interaxial angle of three-dimensional coordinate axis parallel line 5 and three-dimensional coordinate axis 4 is 120 °.

[0024] The utility model increases the three-dimensional coordinate of standard interaxial angle 120 degrees, the parallel line segment of isometric axis and the positive isohedral drawing cuboid model pattern on the basis of retaining the ruler and protractor function of the existing ruler on the market, and the ruler body is made of transparent acrylic plate.

[0025] The utility model discloses the parallel line of angle measuring instrument, ruler, three-dimensional coordinate system, three-dimensional coordinate axis is integrated in one, can draw the three-dimensional coordinate of standard axis angle 120 ° between, can draw the line segment of axis measurement axis direction and the parallel line segment of axis measurement axis.

[0026] When using the ruler to draw the isometric drawing, the three-dimensional coordinate system is drawn according to the three-dimensional coordinate with the axis angle of 120 ° between on the ruler, without size proportion conversion and angle adjustment, compared with the traditional drawing mode of three-dimensional coordinate with angle measuring instrument and two triangular boards, the axis angle measurement is more accurate and standard, the time is shorter, and the efficiency is higher.Then, the parallel line to be drawn is selected according to the parallel line segment of axis measurement axis on the ruler, compared with the traditional parallel line drawing mode of straight ruler and triangular board, the parallel effect of the parallel line is better, so that the three-dimensional effect of the final drawing is ensured, the drawing quality and accuracy are improved, and the drawn drawing is more standard and beautiful.

[0027] The appearance and use method of the drawing ruler meet the traditional habits, and there are no special requirements for manufacturing, use and storage.

[0028] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment;

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents; the above description is only the specific implementation of the utility model, various illustrations do not constitute the limitation to the essential content of the utility model, and the ordinary skilled in the art can modify or deform the previously described specific implementation after reading the specification, without departing from the essence and scope of the utility model.

Claims

1. A convenient drawing ruler for isometric projection, characterized in that, include: Ruler (1); Protractor (2); An isometric line unit is set on a ruler (1) and is used to draw lines for isometric three-dimensional diagrams. The isometric survey line unit includes a three-dimensional coordinate axis (4) and two parallel lines (5) of the three-dimensional coordinate axis symmetrically distributed about the three-dimensional coordinate axis (4); The parallel lines (5) and the three-dimensional coordinate axes (4) are both open on the ruler (1); the ruler (1) and the protractor (2) are both engraved with corresponding scale values ​​(6).

2. The isometric drawing ruler according to claim 1, characterized in that, The ruler (1) and the protractor (2) are connected as a whole, and the protractor (2) has a protractor positioning hole (3) at the center position.

3. The isometric drawing ruler according to claim 1, characterized in that, The interaxial angle between the parallel line (5) of the three-dimensional coordinate axis and the three-dimensional coordinate axis (4) is 120°.

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