JP3153143U - Polygon drawing ruler - Google Patents

Abstract

A polygon drawing ruler capable of drawing a polygonal design easily and quickly in an arbitrary size is provided. SOLUTION: A ruler body 2 made of a circular plate and an annular support shaft 3 provided at the center of the ruler body 2 are rotatably mounted along the surface of the ruler body 2 at the center in the width direction. The marking attachment 6 is formed of an elongated transparent plate that displays the straight line 4 along the length direction and is provided with a marking hole 5 positioned on the straight line 4 at a portion protruding from the outer periphery of the ruler body 2. It consists of. On one or both sides of the ruler body 2, a required number of polygonal symbols 7, 8, 9, 10, 11 are displayed at the center thereof, and the polygonal symbols 7, 8, 9, 10, 11 are displayed. 11, a straight line 12 having a required length is displayed at a required position on a line connecting the position of each corner and the center of the ruler body. [Selection] Figure 2

Description

  The present invention relates to a polygon drawing ruler which can draw a polygonal design easily and quickly in an arbitrary size.

  In order to draw polygonal patterns such as triangles, quadrilaterals, pentagons, hexagons, heptagons, octagons, and nine-sided polygons, conventionally, the angle of each corner is calculated for each polygon, and based on this, paper Marking for each corner was performed using a protractor on the top, and then a ruler was used to draw a line connecting the markings to complete the work.

  However, it is troublesome to calculate the angle of each angle for each polygon in this way, and in addition, marking the exact position of each angle with a protractor actually requires a great deal of labor and time. Is. Furthermore, since the marking of each corner is performed outside the protractor, the size of the polygonal pattern to be drawn is limited by the size of the protractor and cannot be drawn freely to an arbitrary size. Also, a ruler with polygonal holes of different sizes in a transparent plastic sheet is also commercially available, but it can only be drawn in the size of each hole, and there is a subtle difference between the required size. If there is a difference, you have to give up its use.

  The present invention has been made in view of the above points, and it is not necessary to calculate the angle of each polygon for each polygon as in the prior art, and is much simpler than when using a protractor. In addition, an object of the present invention is to provide a polygon drawing ruler that can be drawn in an arbitrary size quickly.

  Thus, the gist of the present invention is that a ruler main body made of a circular plate and an annular support shaft provided at the center of the ruler main body are rotatably attached along the surface of the ruler main body. A marking attachment comprising an elongated transparent plate that displays a straight line along the length direction at the center of the direction and is provided with a marking hole located on the straight line at a portion protruding from the outer periphery of the ruler body. The required number of polygonal symbols are displayed on one or both sides of the ruler main body at the center thereof, and the positions of the corners of the polygonal symbol are connected to the center of the ruler main body. The polygon drawing ruler is characterized in that a straight line having a required length is displayed at a required position on the line.

  In the above configuration, the marking hole may be provided at a required position on a line connecting the position of each corner in the polygonal design of the ruler body and the center of the ruler body.

  Further, in the above configuration, a circle having a predetermined width corresponding to the polygonal pattern displayed in the central part is displayed concentrically on the outer periphery of the ruler body, and the circle and the polygonal pattern are displayed. You may make it give a common coloring to each corresponding thing.

  Since the present invention is configured as described above, it is not necessary to calculate the angle of each angle for each polygon as in the prior art, and it is much easier and faster than when using a protractor, It can be drawn in any size.

  In addition, when marking holes are provided at required positions on the line connecting the positions of the corners of the ruler body in the polygonal pattern and the center of the ruler body, the marking attachment is used. In addition, it can be performed only with the ruler body.

  Also, on the outer periphery of the ruler main body, concentric circles with a predetermined number of circles corresponding to the polygonal symbols displayed in the center are displayed, and the circles and polygonal symbols respectively correspond to the circles When common coloring is applied to each other, the type of each polygon becomes easy to understand, and the position of each corner in each polygon can be easily found, thereby further improving the speed of work. It is something that can be done.

It is a perspective view of the ruler for polygon drawing concerning the embodiment of the present invention. It is the same top view. It is explanatory drawing of the usage method.

    DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  In the figure, reference numeral 1 denotes a polygon drawing ruler. The polygon drawing ruler 1 includes a ruler body 2 made of a circular plate and an annular support shaft 3 provided at the center of the ruler body 2, and is attached to be rotatable along the surface of the ruler body 2. A straight line 4 along the length direction is displayed at the center of the direction, and a long and thin transparent plate is provided with a marking hole 5 located on the straight line 4 at a portion protruding from the outer periphery of the ruler body 2. The marking attachment 6 is displayed on the one or both sides of the ruler body 2 with a required number of polygonal patterns 7, 8, 9, 10, and 11 at the center thereof, and the polygonal A straight line 12 having a required length is displayed at a required position on a line connecting the positions of the corners of the symbols 7, 8, 9, 10, and 11 and the center of the ruler body.

  In the present embodiment, the ruler body 2 and the marking attachment 6 are both made of plastic, and the polygonal patterns 7, 8, 9, 10, 11 and the straight line 12 are Although what was displayed on the front surface of the ruler main body 2 is shown, it is displayed similarly on the back surface. The polygonal pattern on the back surface is of a different type from that on the front surface. In addition, the polygonal symbols 7, 8, 9, 10, and 11 have 7 as an octagon, 8 as a quadrangle, 9 as a hexagon, 10 as a hexagon, and 11 as a triangle. Also good. Moreover, since these polygonal symbols 7, 8, 9, 10, and 11 are difficult to understand when viewed as overlapping, they have different sizes. In addition, each of the straight lines 12 having a required length displayed on a line connecting the position of each angle in the polygonal symbols 7, 8, 9, 10, and 11 and the center of the ruler body 2 is displayed with a numeral. ing.

  Further, in the present embodiment, the marking hole 13 is formed at a required position on a line connecting the positions of the corners of the polygonal pattern 7, 8, 9, 10, 11 of the ruler body 2 and the center of the ruler body 2. Is provided. By doing so, in addition to using the marking attachment 6, the marking body 13 can be used only for the ruler body 2.

  Furthermore, in the present embodiment, a predetermined number of circles 14 having a predetermined width corresponding to the polygonal symbols 7, 8, 9, 10, and 11 displayed on the outer periphery of the ruler body 2 in a concentric manner and at the center. 15, 16, 17, 18 are displayed, and colors corresponding to the circles 14, 15, 16, 17, 18 and the polygonal symbols 7, 8, 9, 10, 11 are respectively displayed in common. Has been given. In the present embodiment, the octagonal symbol 7 and the outermost circle 14 are dark green, the square symbol 8 and the circle 15 inside the circle 14 are orange, the nine-sided symbol 9 and the circle 15 An inner circle 16 sandwiching a white circle is blue, a hexagonal symbol 10 and a circle 17 inside the circle 16 are green, and a triangular symbol 11 and a circle 18 inside the circle 17 are red. Note that the coloring is not limited to the above, but is appropriately selected. By doing so, the types of the polygons 7, 8, 9, 10, and 11 can be easily understood, and the positions of the respective corners of the polygons 7, 8, 9, 10, and 11 can be easily found. Thus, the speed of work is further improved.

Next, a method of using the present embodiment will be described.
FIG. 3 shows an example in which a triangular pattern is drawn. First, a circle of a desired size is drawn on a sheet using a compass (not shown). In the illustrated example, three concentric circles C1, C2, and C3 having different sizes are drawn. The circles C1, C2, and C3 are drawn using a pencil so that they can be erased later. Next, the ruler body 2 is placed on the paper with its center aligned with the centers of the circles C1, C2, and C3. Then, the marking attachment 6 is turned so that the straight line 4 displayed on the marking attachment 6 coincides with the straight line 12 indicating the corner of the triangular symbol 11. In this state, a marking writing tool, for example, a pencil (not shown) core is inserted into the marking hole 5 to make a dotted mark P. Moreover, since this example is a triangular pattern, the dotted | punctate mark P is attached to three places one by one while rotating the marking attachment body 6. FIG. Next, the ruler main body 2 is removed from the sheet, and straight lines L1, L2 passing through the points P from the centers (compass puncture holes) of the circles C1, C2, C3 using a ruler (not shown). , L3. This straight line is also drawn using a pencil. Then, point-like marks P ′ are marked at the intersections of the straight lines L1, L2, and L3 and the initially drawn circles C1, C2, and C3. Then, if the point mark P 'attached to the intersection of the straight lines L1, L2, L3 and the circles C1, C2, C3 is connected to the straight line L by applying a ruler, a triangular pattern is drawn, and then it is unnecessary to draw with a pencil. The work will be completed if you remove the blank line.

  Further, in this method of use, the marking attachment 6 is used to make the point mark P, but the marking attachment 13 provided in the ruler body 2 may be used. In this case, a dot core P is formed by inserting a pencil lead into the required marking hole 13. The other operations are the same as those described above.

DESCRIPTION OF SYMBOLS 1 Polygonal drawing ruler 2 Ruler main body 3 Toroidal shaft 4 Straight line 5 Marking hole 6 Marking attachment 7, 8, 9, 10, 11 Polygonal pattern 12 Straight line 13 Marking hole 14, 15, 16, 17,18 yen

Claims (3)

  A ruler body made of a circular plate, and a straight line extending in the length direction at the center in the width direction, attached to the center of the ruler body with an annular support shaft provided at the center of the ruler body. And a marking attachment made of an elongated transparent plate provided with a marking hole located on the straight line at a portion protruding from the outer periphery of the ruler body, and one or both surfaces of the ruler body In addition, a required number of polygonal symbols are displayed at the center, and a straight line having a required length is formed at a required position on a line connecting the position of each corner and the center of the ruler body in the polygonal symbol A polygon drawing ruler characterized by being displayed.   2. The polygon drawing ruler according to claim 1, wherein a marking hole is provided at a required position on a line connecting the position of each corner of the ruler body in the polygonal pattern and the center of the ruler body.   On the outer periphery of the ruler body, concentrically, a number of circles having a predetermined width corresponding to the polygonal pattern displayed in the central part are displayed, and the circle and the polygonal pattern correspond to each other. The polygon drawing ruler according to claim 1 or 2, wherein a common coloring is applied to the ruler.

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