WO1999026795A1

WO1999026795A1 - Universal scale for drawing use

Info

Publication number: WO1999026795A1
Application number: PCT/KR1998/000090
Authority: WO
Inventors: Young Seok Woo
Original assignee: Young Seok Woo
Priority date: 1997-11-25
Filing date: 1998-04-16
Publication date: 1999-06-03
Also published as: KR100242871B1; KR19990042111A; AU6855998A

Abstract

A universal scale capable of drawing circles of large radii and triangles of various configurations, in addition to polygons, and facilitating measurement of angles and ruling lines. A guide plate for guiding drawing utensils such as a pencil lead along the locus of a circle having a desired diameter is pivotally connected at a predetemined position to a rotating plate, which is supported in such a manner as to enable rotation within a circular hole of a predetermined radius provided in a base plate, to effect drawing a small circle as the rotating plate rotates, and the rotating plate itself can draw a large circle, while triangles and quadrilaterals of any specification can be drawn by using right angled triangle, isosceles triangle, equilateral triangle and equilateral quadrilateral, and a polygon setting meter sectionally indicated on an arrow indicative of a reference point, a prime number indicating scale and a magnification indicating scale is provided around the circular hole to enable drawing arbitrary polygons.

Description

Specification

Versatile scale for drafting Technical field

The present invention relates to a universal drawing scale that makes it easy to draw circles and polygons with different radii and dimensions without drawing a compass and a right angle normal, and to easily draw figures such as angles, lines, triangles, and rectangles. Things.

Background art

Triangles, rectangles, polygons, circles and straight lines are sometimes used when creating charts. To draw such figures and straight lines, at least two orthogonal normals, a protractor and a compass are required.However, these basic drafting tools are inconvenient to use and store, and have the disadvantage of requiring specialized functions. .

The versatile scale reduces the functions required for drafting work such as the above-mentioned charts so that they can be easily operated, and various forms have been conventionally proposed. Known versatile scales include the addition of a triangular ruler or a protractor function to a template that has been modeled in advance for various figures, and a compass that opens a small hole with a fixed gap on a straight line. Most of them are designed to be used in place of, and can only draw very limited size circles and polygons of a certain standard, and have the function to draw various figures with arbitrary dimensions I can't see anything.

In order to solve the above-mentioned problem of the conventional versatile scale, the applicant of the present invention has proposed a utility model registration application No. 97-352 7 of the Republic of Korea. The all-purpose scale disclosed there implements a function that can easily draw circles and polygons of any radius. That is, in the disclosed universal scale, a rotating plate is mounted on a base plate provided with a circular hole and can be rotated according to the trajectory of the circular hole, and the upper limit of the rotating plate is cut off by one to four. It includes a configuration in which the slider is provided so as to be able to move over its radial surface. However, this method has a disadvantage in that the radius of a circle that can be drawn using a rotating plate is limited to the radius range of the base plate.

There were also drawbacks in drawing triangles, such as isosceles triangles, equilateral triangles, and right triangles. Disclosure of the invention

The present invention has been devised for the purpose of solving the above-mentioned problems of the prior art. Therefore, it is possible to draw a polygon having a large radius and various types of triangles. It provides a versatile scale that can simplify measurement and S-line drawing. According to the above-mentioned object, according to the present invention, a guide plate for guiding a drawing instrument such as a pencil lead according to a circular trajectory having a desired diameter can be rotated inside a circular hole having a constant radius provided in a base plate. The rotating plate thus supported is pivotally connected to a predetermined position so that a small-diameter circle can be drawn according to the rotation of the rotating plate, and the rotating plate itself can also draw a large-diameter circle.

Also, the present invention has a configuration in which right triangles, isosceles triangles, equilateral triangles and equilateral squares are provided in a template form on a base plate, and scales of predetermined dimensions are displayed outside the sides of each of these figures.

The base plate includes an arrow indicating a reference point on the outer periphery of the circular hole, a polygon setting scale divided and displayed on a prime display scale and a multiple display scale, and the prime display scale is 2χ, 3χ, 5χ, 7χ, 11 1, 13 3, 17 x, etc., and the multiple scale is 4 x, 6 x, 8 x, 9 x, 10 x, 12 x, 14 x, These are displayed as 15 x, 16 x, 18 x, 20 x, etc., and these prime display scales and multiple display scales are displayed repeatedly at each position representing the corresponding vertex of the polygon. It is.

The rotary plate has a circular shape in which the upper limit is cut out, and one cut surface has a transparent cover-shaped bearing portion connecting the center of the guide plate to a shaft, and the outer periphery is the circular shape. It has a stepped cross section corresponding to the holes.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an exploded perspective view of a main part showing a universal scale of the present invention.

FIG. 2 is a sectional view showing a section of the circular hole shown in FIG.

FIG. 3 is a plan view showing a pattern around the circular hole shown in FIG.

FIG. 4 is a drawing showing an example of drawing an octagonal figure with a universal scale according to the present invention.

FIG. 5 is a plan view showing another embodiment of the rotating plate support structure shown in FIG. FIG. 6 is a side sectional view taken along the line X_X in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, preferred embodiments for realizing the present invention will be described in more detail with reference to the accompanying drawings. The universal scale of the present invention is composed of a base plate 2 and a rotating plate 4 as shown in FIG. The base plate 2 has a circular hole 20 with a constant radius on one side, and template-like square holes 22, regular triangle holes 24, right triangle holes 26, and isosceles triangle holes 28 on the other part. Is provided.

Since the scales 30a, 30b, and 30c are displayed on the outer periphery of the base plate 2, the function of the normal scale can be performed by itself. The slits 31a and 3lb are provided on both sides in parallel. These slits 31a and 31b are effectively used in S-drawing described later.

On one side of the base plate 2, a folding line 38 is connected to a shaft so that it can be folded freely. The folding length 38 is provided so as to be foldable on the bottom surface of the base plate 2, and its thickness is set to about 12 of the base plate 2. Also, if the corresponding portion of the base plate 2 that comes into contact when it is folded has the same thickness, the folded length 38 becomes the same surface as the base plate 2 when folded, which is convenient. It is. In the example shown, the folding rule 38 has a clip 39 integrally on the upper side, and the clip 39 passes through the upper surface of the base plate 2 when the folding rule 38 is folded. It can be extended to the inside of the circular hole 20.

As shown in the cross section of FIG. 2, the circular hole 20 has a stepped portion 32 slightly protruding inward from the middle of the inner peripheral surface, and a display scale of the pattern shown in FIG. Is provided. The display scale is such that a protractor 34 and a polygon setting meter 36 are displayed concentrically. The protractor 3 4 is a normal unit in which the one-unit scale 3 4a and the ten-unit scale 3 4b that display the circumference divided into 360 are concentrically superimposed, but the polygon setter 36 is a circle. An arrow indicating one point on the circumference as a reference point, and divided into a prime display scale and a multiple display scale.

More specifically, the prime number scale is 2 x, 3 x, 5 x, 7 x, llx, 1 3 x for each point that divides the circumference into 2, 3, 5, 7, 11, 11, 13 and 17 equally , 17 x, and the multiple display scale indicates the circumference as 4, 6, 8, 9, 10, 10, 12, 14, 15, or 4 x, 6 x, 8 x, 9 x, 10 x, 12 x, 14 x, 15 x, 16 x, 18 x , 20 x is displayed. Such a prime display scale and a multiple display scale correspond to vertex positions of a polygon.

As shown in FIG. 1, the rotating plate 4 concentrically fitted in the circular hole 20 has a large number of circular templates 40 having a diameter of 1 O mm or less provided on the inside according to size. 1 Z 4 The upper limit is in the form of a truncated circle. 1 Z 4 The upper end is defined by the shape of the cut-out, and at approximately the middle of the cut surface, a transparent cover-shaped bearing 42 is provided on the body, and it extends in the orthogonal direction. On the other cut surface, a scale 44 is displayed for measuring the radius of the circle. A small hole 46 is provided on the outer peripheral side of the rotating plate 4 as a center point when drawing a large diameter circle, and a guide plate is provided in a shaft hole 48 provided at the center of the bearing portion 42. The 50 screw shafts 52 are penetrated and assembled by the fastening nuts 54. The rotating plate 4 having such a configuration is held by the clip 39 of the folding scale 38 while being fitted in the circular hole 20 during storage so as not to fall out of the circular hole 20. Be attached.

The guide plate 50 has a through hole 56 on one side of the outer circumference so that a pencil lead etc. can penetrate, and defines a circle within the radius range of the circular hole 20 on one side with this through hole 56 as a boundary. For example, it is displayed as 35, 30, 20, 100 mm, and on the opposite side, the rotary plate 4 is small without being restricted by the circular hole 20. A radius scale 50b force defining the radius of the circle drawn with the hole 46 as the center point is displayed, for example, 60, 50, 40mm.

The setting of the radius scale 50a is performed when rotating the guide plate 50 so that the through hole 56 of the guide plate 50 fits into an arc drawn with a radius of a corresponding dimension at the center of the rotating plate 4. The inner cut surface extending from 2 toward the center of the circular hole 20 is displayed in a stepwise manner at a point coinciding with the outer periphery of the guide plate 50, and is displayed as a proportionally equal display.

Also, the setting of the radius scale 50b is performed such that the rotating plate 4 is rotated about the small hole 46 so that the through hole 56 of the guide plate 50 coincides with an arc drawn with a radius of a corresponding dimension. At this time, the outer cut surface extending in the circumferential direction of the circular hole 20 from the bearing portion 42 is displayed in a stepwise and proportionally equal manner at a point where the outer cut surface coincides with the outer periphery of the guide plate 50. It is. When the rotating plate 4 is rotated about the small hole 46, a push pin 58 for supporting the rotary plate 4 is required. In the present invention, the push pin 58 is carried easily. A guide hole 60 is provided at the upper end of the screw shaft 52 of the guide plate 50.

The drawing work that can be performed on the universal scale of the present invention having the above configuration is S drawing, circular, polygon of arbitrary radius, square of arbitrary size, square, equilateral triangle, isosceles triangle, right triangle, and measurement of angle And so on.

g line drawing

The firewood drawing is performed by arbitrarily dividing and displaying the X-ray position using the scales 30c of the slits 31a and 31b provided at both ends of the base plate 2, and then extending the long side of the base plate 2. Can be drawn by matching both ends of the display unit with the display unit.

Circular drawing

For circular drawing, two methods of rotating the rotating plate 4 are possible in addition to the usual method of drawing with the circular template 40 prepared on the rotating plate 4.

The first method is as follows. With the rotating plate 4 placed in the circular hole 20 of the base plate 2, a pencil lead or the like is inserted into the through hole 56 of the guide plate 50, and the radius of the circular hole 20 is changed. This is a method in which the rotary plate 4 is rotated so as to be guided in accordance with the drawing to draw a drawing. The radius of the circle drawn by this method is set so that the radius scale 50a of the guide plate 50 matches the cut surface extended from the bearing portion 42 of the rotating plate 4.

Therefore, by loosening the fastening nut 54 slightly and adjusting the rotation of the guide plate 50, and by tightening the fastening nut 54, the radius of the circle to be drawn can be arbitrarily set within a certain range. Can be set.

The second method is a method in which the rotating plate 4 is separated from the circular hole 20 and placed in a free state for drawing. In this method, a push pin 58 or the like is inserted into the small hole 46 on the circumferential side of the rotating plate 4 to support the shaft.In this case, too, the guide plate 50 is rotated to perform drawing. The radius of the circle formed can be set arbitrarily. However, the radius that can be set is limited to the numerical range in which the radius scale 50b of the guide plate 50 is displayed so as to match the cut surface of the rotary plate 4.

Polygon construction

When the radius of the polygon is smaller than the radius of the circular hole 20, rotate the rotating plate 4 to the circular hole 20. When the scale scale 4 4 coincides with the scale selected from the prime display scale or the multiple display scale of the polygon setting meter 36 shown on the outer circumference of the circular hole 20 while rotating inside the Draw a line to divide the circumference.

More specifically, polygons that are divided into prime numbers such as triangles, pentagons, heptagons, H "—polygons, dodecagons, and heptagons are represented by 3X, 5x, 7x, 1 1 Display every hour that matches x, 13 x, 17 x, and also square, hexagon, octagon, decagon, dodecagon, tetragon, pentagon, hexagon, octagon, decagon For example, 4 x, 6 x, 8 x, 10 x, 12 x, 15 x, 16 x, 18 x, 2 O x, the multiple display scale and the prime display scale After dividing and displaying the positions corresponding to common divisors, 2 x, 3 x, 5 x, and 7 X, draw a line at each of the displayed positions to draw the desired polygon.

In addition, the drawing of a polygon having a radius within the radius range of the circular hole 20 is performed in the same manner as described above. However, it can be obtained by connecting points where the circumference of a large radius is divided by extending a little more in the radial direction at each indicated position.

Taking the construction of an octagon as an example, as shown in Fig. 4, a circle C is drawn, and the circumference of the circle C is set to 2 X, 4 X, and 8 X on the scale of the polygon setter 36. Draw a line S for each matching position, divide it, and connect it to create the octagon E you want. The reason why 2x and 4X are selected in the above octagonal drawing is that these numbers are common divisors of 8X, and similarly, in the case of a decagonal shape, the common divisor is included. Should select 2x, 5x, 10x.

Rectangle drawing

In addition to the method of drawing a square of an arbitrary standard using the polygon setting meter 36, a method of drawing a square and a rectangle using a square hole 22 formed in the base plate 2 is used. I can do it. In this case, the standard of the square to be drawn can be determined through the scales indicated on each side of the square hole 22.

Triangle construction

For drawing triangles, other than the method of drawing an equilateral triangle of an arbitrary standard using the polygon setting meter 36, the equilateral triangle 24, right triangle 26, and isosceles triangle provided in the base plate 2. This can be done using holes 28. Also in this case, the equilateral triangular hole 2 4 Plotting can be made to the size of any standard through the scales displayed on each side of the square hole 26 and the isosceles triangular hole 28. As shown in the figure, the right-angled triangle hole 26 has an acute angle of 45 degrees, so it is not possible to draw right-angled triangles with the acute angles of 30 degrees and 60 degrees. Since the acute angle of 8 is 30 degrees, the acute angle of 30 degrees and 60 degrees is obtained by adding the acute angle 30 degrees of the isosceles triangular hole 28 to the angle diagram 60 degrees of the equilateral triangle hole 24. You can draw a right triangle.

Angle diagram measurement

In the angle diagram measurement, the scale 4 4 of the rotating plate 4 is matched with the reference point of the protractor 34, and if one side with the angle to be measured is matched here, the other side matches the scale of the protractor 34. Since the angle is displayed, it is simpler than using an existing protractor, and more accurate angle can be measured.

FIG. 5 is a plan view showing another embodiment for supporting the rotating plate 4 according to the present invention. In this embodiment, a configuration is shown in which the rotating plate 4 is supported by a plurality of rollers 62 equally arranged on the outer peripheral side of the circular hole 20 of the base plate 2.

More specifically, the roller 62 has a dimension of 1 Z2 or less with respect to the thickness of the base plate 2, and is formed of a groove-shaped sheet 6 provided around the circular hole 20. It is arranged so that it can rotate inside 4.

FIG. 6 illustrates a rotating structure of the roller 62. Each roller 62 is supported on a fixed shaft 66 integrally protruding from the center of the sheet 64 of the base plate 2, and the rotating plate 4 is provided on the outer peripheral surface of the roller 62. The annular groove 68 is supported so that it can be rotated with its outer periphery inserted and connected to the annular groove 68. In such a configuration, the contact surface between the rotary plate 4 and the circular hole 20 is reduced, the frictional force is reduced, and the rotary motion of the rotary plate 4 becomes smooth.

Industrial applicability

As described above, according to the present invention, a rotary plate is combined with the circumferential hole of the base plate, and a pencil having an arbitrary radius is easily drawn by inserting a pencil lead or the like into the through hole provided in the guide plate and rotating the guide plate. Not only can it be done, but also other triangles, squares and other polygons can be easily drawn, so it can be used efficiently for creating flow charts and documents that require frequent drawing of figures. On the other hand, the present invention is not limited to the above-described best mode, and any person who has ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the claims may be variously modified. Changes can be made.

Claims

1. A base plate 2 with a circular hole 20 in which the inner peripheral surface is composed of a step 32 and a protractor 34 and a polygonal setter 36 are concentrically displayed on the outer periphery; It has a circular shape, and a transparent cover-shaped bearing 42 with a shaft hole 48 in the center is provided almost at the middle of one cut surface, and a scale 44 on the other cut surface. A small hole 46 is provided on the outer periphery symmetrical to the bearing portion 42, and the rotating plate 4 is provided so as to be able to rotate on the step portion 32. A universal scale characterized by becoming.

2. A base plate 2 having a circular hole 20 in which the inner peripheral surface is composed of a step 32 and a protractor 34 and a polygonal setter 36 are arranged concentrically on the outer periphery; A transparent cover-shaped bearing 42 with a shaft hole 48 at the center is provided almost in the middle of one of the cut surfaces, and a scale scale 44 on the other cut surface. A rotary plate 4 provided with a small hole 46 on the outer periphery symmetrical to the bearing portion 42, and provided to be rotatable on the step portion 32; A screw shaft 52 is provided at the center through the shaft hole 48 of the bearing portion 42 and connected by a fastening nut 54, and a through hole 56 is provided on the outer periphery. A universal scale consisting of a guide plate 50 on each side of the hole 56 with scales 50a and 50b of each radius.

3. The base plate 2 includes a template regular square hole 22 on the inside, a regular triangle hole 24, a right triangle hole 26, and an isosceles triangle hole 28. The universal scale according to claim 2.

4. The universal scale according to claim 1, wherein a scale 30a, 30b, and 30c is displayed on an outer periphery of the base plate 2.

5. The polygon setting meter 36 is an arrow indicating one point on the circumference as a reference point, and 2 X, 3 x, 5 x, 7 x, llx, 13 x, 17 corresponding to the prime number display scale x and multiples 4 x, 6 x, 8 x, 9 x, 10 x, 12 x, 14 x, 15 x, 16 x, 18 x, 20 x applicable to the display scale The universal scale according to claim 1 or claim 2, wherein:

6. The circular hole 20 of the base plate 2 has a plurality of rollers 62 evenly arranged on the outer peripheral side thereof, and the rotating plate 4 is supported by the rollers 62 so as to be rotatable. The universal scale according to claim 1 or claim 2, wherein