CN213768058U - Drawing ruler - Google Patents

Abstract

The utility model relates to a drafting scale, including the ruler body, be provided with at least three rectangular form rectangle through-hole on the ruler body, be parallel to each other between the rectangle through-hole, be provided with on the rectangle through-hole rather than corresponding scale mark. The utility model discloses simple structure, convenient to use, through the cooperation design of ruler body, rectangle through-hole and scale mark, effectively solve the mapping and standardize, the mapping effect is relatively poor, and the mapping spends time more, draws and appears squinting easily and carry, use inconvenient scheduling problem.

Description

Drawing ruler

Technical Field

The utility model belongs to the technical field of teaching aid, in particular to mapping ruler.

Background

In the current classroom teaching, teachers use various teaching tools, and although high-tech computers and projectors are provided, the blackboard still occupies a great proportion in teaching, especially in mathematics class.

In mathematical teaching, graphs are required to be drawn frequently, and teachers often adopt a hand-drawing mode when drawing complex graphs on a blackboard, and although the mode can quickly draw graphs, the drawing effect is poor due to the fact that the graphs are separated from a ruler, the graphs are inevitably nonstandard, and even understanding of students is influenced in severe cases, and teaching in a classroom is influenced; if a drawing tool is used, a large number of drawing tools such as a ruler, a protractor, a compass and the like need to be prepared, sometimes two rulers need to be prepared, the use is very inconvenient, and the drawing tools occupy a large amount of space and are inconvenient to store when added together; in addition, in the carrying process of the drawing tools, the drawing tools are dispersed and irregular, so that the drawing tools are difficult to carry and easy to lose or damage, and great troubles are brought to mathematics teachers in primary and secondary schools.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mapping chi to prior art not enough, through the cooperation design of ruler body, rectangle through-hole and scale mark, effectively solve the mapping and lack of standardization, the mapping effect is relatively poor, and the mapping spends time more, and the skew appears and carries, uses inconvenient scheduling problem easily in the mapping.

The utility model discloses the technical scheme who adopts:

the drawing ruler comprises a ruler body, wherein at least three strip-shaped rectangular through holes are formed in the ruler body, the rectangular through holes are parallel to each other, and scale marks corresponding to the rectangular through holes are arranged on the rectangular through holes.

Furthermore, scale marks are arranged on the periphery of the ruler body.

Further, the length and the width of the ruler body are respectively set to be 600mm and 260 mm.

Further, the length and the width of the rectangular through hole are respectively set to be 530mm and 60 mm.

Further, the interval distance between the adjacent rectangular through holes is set to be 20 mm.

Furthermore, the ruler body is made of transparent materials.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses simple structure, convenient to use effectively solves the mapping and is not normal, and the mapping effect is relatively poor, and the mapping spends time more, and the skew appears and carries, uses inconvenient scheduling problem easily drawing.

2. The utility model discloses simple structure, economical and practical, one chi is multi-purpose, can satisfy the mapping demand that real estate developer designed drawing house floor betterly.

3. The utility model is suitable for a little and middle mathematics teacher draws many different figures on the blackboard, such as parallelogram, trapezoidal, triangle-shaped, square and rectangle, especially rectangle, can once draw three limits of rectangle to draw two right angles, the right angle of drawing is difficult for taking place the skew, effectively improves the degree of accuracy of drawing, has saved the mapping time; meanwhile, the drawing device can draw various figures with different specifications, is convenient to compare in teaching, is visual in figures and good in drawing effect, improves the drawing accuracy and normalization, is not easy to deviate, and effectively improves the classroom teaching quality.

4. The utility model discloses need not to change the mapping instrument frequently, save the mapping time, guarantee the mapping effect, provide very big convenience for the mathematics is drawn.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a first usage state diagram according to a first embodiment;

FIG. 3 is a diagram illustrating a second usage state of the first embodiment;

FIG. 4 is a schematic structural diagram of the second embodiment;

in the figure: 1. a ruler body; 2. scale lines; 3. a rectangular through hole; 4. a semi-circular body; 5. identifying an angle; 6. a semicircular through hole; 7. a normal line via hole; 8. and a transverse through hole.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 3, the utility model provides a drawing ruler, which comprises a ruler body 1, wherein the ruler body 1 is made of transparent plastic materials through one-step injection molding, the length and the width of the ruler body 1 are respectively set to be 600mm and 260mm, the periphery of the ruler body 1 is provided with scale marks 2, the specific length of the line segment can be clearly drawn through the scale marks 2, at least three strip-shaped rectangular through holes 3 are arranged on the ruler body 1, the rectangular through holes 3 are designed into a rectangular structure, three sides of a square or a rectangle can be drawn at one time by utilizing the rectangular through holes 3, and two right angles are drawn, the drawn right angles are not easily deflected, the length and width of the rectangular through-hole 3 are set to 530mm and 60mm respectively, the rectangular through holes 3 are parallel to each other, the spacing distance between every two adjacent rectangular through holes 3 is set to be 20mm, and the rectangular through holes 3 are provided with scale marks 2 corresponding to the rectangular through holes.

The utility model discloses a theory of operation does:

when the ruler is used, the ruler body 1 is attached to a blackboard, a mathematic teacher uses chalk to preliminarily draw a plurality of fine line segments in the rectangular through hole 3 to form a general frame of a graph, such as a triangle, a trapezoid or a parallelogram, and the drawn fine line segments are connected by using the ruler body 1 to form the graph to be drawn by the mathematic teacher.

Example two

Referring to fig. 4, the present embodiment differs from embodiment 1 in that: the ruler is characterized in that protractors are respectively arranged on the left side and the right side of the ruler body 1 and comprise a semicircular body 4, semicircular through holes 6, normal through holes 7 and transverse through holes 8 are respectively formed in the semicircular body 4, angle marks 5 corresponding to the semicircular through holes 6 are arranged above the semicircular through holes, the normal through holes 7 are located in the middle of the semicircular body 4, and the middle of the transverse through holes 8 is communicated with the bottoms of the normal through holes 7.

The cooperation of the semicircular body 4, the semicircular through hole 6 and the angle mark 5 can effectively draw triangles, trapezoids and the like with different included angles, the semicircular through hole 6 is used for drawing a semicircle, the normal through hole 7 is used for drawing a vertical line and can also be used for drawing the distance from a point to a straight line, and meanwhile, the cooperation of the normal through hole 7 and the transverse through hole 8 can also be used for drawing a vertical line segment on a blackboard, so that the graph is intuitive and is convenient for teaching; the combination of the ruler body 1 and the semicircular body 4 effectively overcomes the defect that the ruler body 1 easily hurts a user, and greatly improves the use safety.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A drawing ruler is characterized in that: the ruler comprises a ruler body, wherein at least three strip-shaped rectangular through holes are formed in the ruler body, the rectangular through holes are parallel to each other, and scale marks corresponding to the rectangular through holes are arranged on the rectangular through holes.

2. A ruler according to claim 1, wherein: and scale marks are arranged on the periphery of the ruler body.

3. A ruler according to claim 1, wherein: the length and the width of the ruler body are respectively set to be 600mm and 260 mm.

4. A ruler according to claim 1, wherein: the length and the width of the rectangular through hole are respectively set to be 530mm and 60 mm.

5. A ruler according to claim 1, wherein: the interval distance between the adjacent rectangular through holes is set to be 20 mm.

6. A ruler according to claim 1, wherein: the ruler body is made of transparent materials.

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