KR20060116107A - Ruler used as protractor - Google Patents

Abstract

An angle meter securing the origin is provided to enable drawings several times about the same reference line and origin at any angle by always securing the reference line and the origin. An angle meter securing the origin includes a first bar ruler(10) and a second bar ruler(20). The first bar ruler has a first linear section and has a center obtuse angle. In the first bar ruler, an arc-shaped rail groove is formed about one point on the first linear section and a first arc section in which an angle scales are marked to measure an angle is formed. The second bar ruler has a second linear section. A second arc section having a rail boss is formed in the second bar ruler. The angle between the first bar ruler and the second bar ruler is widened by rotation of the rail boss and the rail groove.

Description

Angle used as origin {Ruler Used As Protractor}

1 is an exploded perspective view showing a protractor combined according to the present invention.

2 is a schematic plan view of an angler having an origin secured according to the present invention.

3 is a schematic side cross-sectional view of an angler secured to the origin according to the present invention.

4 is a view showing an operating state of the protractor of the origin secured in accordance with the present invention.

Explanation of symbols on the main parts of the drawings

1: angler that secures the origin according to the present invention

10: first bar 11: first straight portion

12: 1st arc part 13: rail groove

14: angle scale 20: second bar

21: second straight portion 22: second circular arc portion

22-1: arc extension 23: rail turning

24: Angle measurement arrow 30: Center point

31,32: incision

The present invention relates to an angle ruler that ensures the origin, and more particularly, by combining two rods formed with an arc portion with an angular scale so as to be foldable by a rail protrusion and a rail groove, the reference line and the origin point are always It is possible to construct multiple angles based on the same reference line and origin at any angle, and relates to an angler having an origin that can be constructed at once by accurately measuring the length of a desired line.

Various tools, including rulers, protractors, and compasses, are used in various drawing tools. Here, the protractor is a tool for measuring the angle between the line segment and the line segment. The general configuration of such a protractor is made of a semi-circle of a plate shape, but is equipped with a scale displaying angles along the circumference to measure an angle represented by an arbitrary line segment. Or by drawing the required angle.

However, such a conventional protractor has various inconveniences in drawing the measured angle as a line segment even though the angle represented by any line segment or the arbitrary angle can be accurately measured. In other words, if you want to draw a triangular figure at any angle on the ground, you must first measure the required angle, mark its measured angle as a dot, and then continue to draw a proper length using a bar. As a result, inconveniences in using the measurement and drawing of angles were caused separately, which caused errors such that an accurate drawing was not obtained.

This problem is particularly noticeable when the lower grade children attempt to measure or construct angles for the purpose of learning. Moreover, conventionally, it is impossible to construct several times at any angle based on the same reference line and origin, so that it is cumbersome to understand the coordinate system of quadratic equations and the angle concept of elementary school students in the precision drafting of ordinary people or the class of middle and high school students. there was.

The present invention has been made to solve the above problems, an object of the present invention, when drawing an angle around one origin and reference line, the reference line and the origin point is always secured to refer to the same reference line and origin of any angle It is possible to construct as many times as possible and to measure the length of the desired line to provide an angle that secures the origin that can be constructed at once.

An angler secured to the origin of the present invention for achieving the above object of the present invention is formed with a first straight line portion is displayed on the one side in the width direction that can be drawn to the scale, the longitudinal direction from one end to the upper surface in the longitudinal direction A first bar having a center angle of a predetermined width and an obtuse angle, an arc-shaped rail groove having a point on the first straight line portion as a center point, and a first arc portion having an angle scale for measuring an angle formed thereon; A second straight portion marked with a ruler scale capable of drawing a length on one side in the width direction is formed, and a rail protrusion which is inserted into the rail groove of the first bar of the first bar in the longitudinal direction at one end in the longitudinal direction and engages and slides in the circumferential direction And a second rod having a second circular arc portion having the first rod and the rail protrusion and the rail groove interlocked with each other to rotate the first rod and The angle between the second bar is characterized in that the spread.

In addition, the material of the first and second bar is preferably a transparent plastic.

In addition, an arc extension portion is integrally formed at one end of the second circular arc portion of the second bar by a predetermined angle in the circumferential direction, and the rail protrusion may be formed on a bottom surface thereof.

In addition, when the rail protrusion of the arc extension portion is fitted into the rail groove of the first rod, and the angle between the first rod and the second rod becomes 0 degrees, the arc extension portion of the second arc portion is equal to the extension angle. It is located on the first arc portion overlapping.

In addition, an angle between the first bar and the second bar may extend from 0 degrees to 180 degrees.

In addition, an angle measuring arrow indicating an angle between the first bar and the second bar may be formed on an upper surface of the arc of the second bar.

In addition, the cross-sectional shape of the rail groove of the first bar is of the upper and lower beam shape, and the cross-sectional shape of the rail protrusion of the second bar of the second bar is fitted to the upper and lower beam shape. It is made to engage and slide.

In addition, a cutout of a predetermined size is formed in the first bar and the second bar around the center point portion.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a protractor combine according to the present invention, Figures 2 and 3 is a schematic plan view and side cross-sectional view of the protractor secured to the origin according to the present invention, Figure 4 is secured to the origin according to the present invention As an illustration showing the operating state of the angle to be described, will be described together for convenience of description.

As shown, the angler 1 having the origin secured in accordance with the present invention, the first linear portion 11 and the first linear portion 11 and the first linear portion 11 is marked with a scale that can plot the length; The first circular arc which is formed integrally and has an arc-shaped rail groove 13 having a point on the first straight portion 11 as the center point 30 on the upper surface thereof, and an angle scale 14 for measuring the angle. A first bar (10) comprising a portion (12); The second straight portion 21 marked with a ruler scale capable of drawing a length and the rail groove 13 of the first bar 10 are formed integrally with one end of the second straight portion 21 and on the bottom thereof. And a second rod 20 having a second arc portion 22 having a rail protrusion 23 inserted therein and sliding in the circumferential direction.

Here, the first bar 10 and the second bar 20 is connected to each other rotatably coupled to the rail protrusion 23 and the rail groove 13, the state fully expanded from the fully folded state in the connected state Will rotate until That is, in the illustrated example, the first bar 10 and the second bar 20, the angle between the first straight line 11 and the second straight line 21 is formed by the center point 30 The center rotates in a range of 0 degrees to 150 degrees, but may rotate up to 180 degrees, and the present invention is not limited to the rotation angle.

In addition, the material of the first and second bar (10, 20) is preferably a transparent plastic material having a soft (steel), it is also possible to steel (steel) material and the degree of angular scale 14 seems to be frozen As long as the transparent or translucent material can be used, or if the rail protrusion 23 is a flexible material that can be easily fitted into the rail groove 13, all materials can be used, but the material is not limited thereto. In addition, the thicknesses and widths of the first and second bar bars 10 and 20, the rail protrusions 23, and the rail grooves 13 are not determined, and may be arbitrarily changed according to a working environment. . In addition, in the illustrated example, the width of the rail protrusion 23 in the longitudinal direction is about 120 degrees, but may be designed to have a very small angle (about 1 to 20 degrees), and the present invention. Is not limited to the width in the longitudinal direction.

Further, an arc extension portion 22-1 extends at a predetermined angle (about 20 degrees) in the circumferential direction on the second circular arc portion 22 of the second bar 20, and the rail stones described above on its bottom surface. The groups 23 extend together. Of course, the size of the extension angle of the arc extension portion 22-1 may be formed to have a very small angle (about 1 to 20 degrees) according to the width of the rail protrusion 23 in the longitudinal direction as described above. In addition, in this invention, it is not limited to the angle magnitude. In addition, the extension portion of the circular arc portion may be formed together with the first bar as well as the second bar.

As the circular arc extension part 22-1 having the rail protrusion 23 formed on the bottom surface thereof is formed, the rail protrusion 23 is fitted into the rail groove 13 of the first bar rod 10 so that the first bar rod 10 is formed. When the angle between the second bar and the bar 20 is 0 degrees, the arc extension portion 22-1 of the second arc portion 22 is positioned on the first arc portion 12 by the extension angle thereof. After that, the angle between 0 degrees to 150 degrees or 180 degrees between the rail projection 23 and the rail groove 13 is to be slid in the circumferential direction to expand.

Here, the point where the arc extension part 22-1 starts on the upper surface of the arc part 22 of the second bar 20, that is, extends outward from the center point 30 in a straight line with the second straight part 21. Angle measuring arrow 24 is formed so that the angle measuring arrow 24 indicates the angle scale when the angle between the first bar 10 and the second bar 20 is unfolded by a predetermined angle. It is rotated so that it is easy to check the angle. Of course, the angle measurement arrow 24 may be formed in the arc portion 12 of the first bar 10 instead of the arc portion 22 of the second bar 20, the present invention is limited thereto It is not.

In addition, the cross-sectional shape of the rail groove 13 of the 1st bar 10 is an upper and lower beam shape, and the cross-sectional shape of the rail protrusion 23 of the 2nd bar 20 fitted to it is also shown. In addition, it is made of upper and lower gwanghyeong (上 狹 下 廣 形) after joining is in the form of a wedge is not easy to separate or fall. In addition, an insertion protrusion (not shown) is formed at the center of the upper and lower lower rail grooves 13, and the upper and lower lower lower rail protrusions 23 are formed. An insertion groove (not shown) may be formed in the center to insert the insertion protrusion to further secure measurement accuracy. Of course, although not shown, instead of the shape as described above, the engaging grooves are formed on both side walls of the rail groove 13 of the first bar 10, and the rail protrusions 23 are easily formed by engaging projections. It can also be prevented from being detached or removed.

Furthermore, by forming the cut portions 31 and 32 having a predetermined size in the first bar 10 and the second bar 20 around the center point 30 described above, the center point portion is rounded to form a first bar. The first and second straight portions 11 and 21 of the ruler 10 and the second bar ruler 20 are cut in the width direction by the radius thickness of the pen tip. Even when constructing, since the vertex portion (center point) is always structured so that a nib having various sizes can be easily inserted into the center point 30. According to such a structure, even when the line segment of a small angle is drawn, even if the angle between the 1st bar 10 and the 1st and 2nd linear parts 11 and 21 of the 2nd bar 20 is 0 degree | times, You can draw a line.

In addition, the other ends in the longitudinal direction of the first and second straight portions 11 and 21 of the first bar 10 and the second bar 20 are opened and closed (not shown) in directions facing each other (eg, For example, in the form of a fixing groove and a fixing protrusion), when the protractor according to the present invention is not used, the two rods can be fixedly arranged to each other.

The operation state of the protractor having the origin secured as described above is as follows, and will be described with reference to FIGS. 1 to 4.

First, the first bar portion 10 consisting of a first linear portion 11, which is marked with a scale, and an arc-shaped rail groove 13, and a first circular arc portion 12 on which an angular scale 14 is displayed, Also provided is a second bar (20) consisting of a second straight portion 21 and a second circular arc portion 22 having a rail projection 23 marked with a scale.

Subsequently, the rail protrusion 23 formed on the bottom surface of the circular arc extension part of the second circular arc part 22 is inserted into the rail groove 13 of the first rod bar 10 so that the first bar bar 10 and the second bar bar ( The angle between 20) shall be 0 degrees. At this time, the angle scale indicated by the angle measurement arrow 24 becomes 0, and the arc extension portion 22-1 of the second arc portion 22 is positioned on the first arc portion 12 by the extension angle (about 20 degrees). It is superimposed on.

Subsequently, since the rail protrusion 23 and the rail groove 13 are rotatable with each other, various angles (0 degrees to 150 degrees) can be obtained without changing the center point based on the straight portion 11 of the first bar 10 as a reference line. Or up to 180 degrees). In this case, since the cutouts 31 and 32 are formed at the center point 30 and are rounded in the first bar 10 and the second bar 20, nibs of various sizes may be inserted into the center point. It is supposed to be.

Although the present invention has been described in detail with reference to preferred embodiments, it is not intended to limit the present invention but merely to illustrate the present invention, and various changes and modifications can be made by those skilled in the art without departing from the gist and scope of the present invention. Is, of course, also within the scope of the present invention.

As described above, according to the angler secured to the origin according to the present invention, when the angle is drawn around one origin and the reference line, by combining two rods formed with an arc portion marked with an angle scale so as to be able to fold in a folding manner As a result, the reference line and the origin point are always secured, so that any angle can be drawn several times based on the same reference line and the origin point, and it is possible to accurately measure the length of the desired line and construct it at once.

In addition, by forming an incision having a predetermined size in two bar bars around the origin, the origin portion is rounded, and the cross section of the ruler is receded by the radius of the pen tip, so that the center of the drawn segment is always the center of the origin. Has the effect of matching

Claims (9)

A first straight line portion having a ruled scale for drawing a length on one side in the width direction is formed, and has a central angle of a predetermined width and an obtuse angle at one end in the longitudinal direction and has a point on the first straight line as a center point. A first bar having an arc-shaped rail groove and a first arc portion having an angle scale for measuring an angle formed thereon; A second straight portion marked with a ruler scale capable of drawing a length on one side in the width direction is formed, and a rail protrusion which is inserted into the rail groove of the first bar of the first bar in the longitudinal direction at one end in the longitudinal direction and engages and slides in the circumferential direction A second rod having a second circular arc portion having An angle secured to the origin, characterized in that the angle between the first bar and the second bar is expanded by the rail protrusion and the rail groove is rotated in engagement with each other. The method of claim 1, The first and second bar of the material is secured to the origin, characterized in that the transparent plastic. The method of claim 1, A circular arc extending part is integrally molded at a predetermined angle in the circumferential direction at one end of the second circular arc part of the second bar, and the rail protrusion is formed on the bottom thereof. The method of claim 3, wherein When the rail protrusion of the arc extension portion is fitted into the rail groove of the first bar, and the angle between the first bar and the second bar is 0 degrees, the arc extension portion of the second arc portion is extended by the extension angle. 1 An angle secured to the origin point, characterized in that the overlapping position on the arc portion. The method according to any one of claims 1 to 3, The angle between the first bar and the second bar of the angle between 0 degrees to 180 degrees, the origin is secured angle. The method according to any one of claims 1 to 3, An angler having an origin point, characterized in that an angle measuring arrow is formed on the upper surface of the arc portion of the second bar, the angle measuring arrow indicating the angle between the first bar and the second bar. The method according to any one of claims 1 to 3, The cross-sectional shape of the rail groove of the first bar is of the upper and lower beam shape, and the cross-sectional shape of the rail protrusion of the second bar of the second bar is fitted into the upper and lower beam shape. An angler secured to the origin, characterized in that sliding. The method of claim 7, wherein Insertion protrusions are formed in the center of the upper and lower light rail rail grooves, and the insertion protrusions are inserted in the center of the upper and lower light beam rail protrusions. An angler is secured to the origin, characterized in that the groove is formed. The method according to any one of claims 1 to 3, A cutout having a predetermined size is formed in the first bar and the second bar with respect to the center point, and the center point is rounded, so that the first and second straight portions of the first bar and the second bar are wide. An angle ruler that ensures the origin, characterized in that it is cut in the shape of the radius of the pen tip to draw a line in the direction.

Images