JPH0636896U - template - Google Patents

Abstract

(57) [Abstract] [Purpose] Regarding a template for drawing a circle or an ellipse, a template in which the drawing position of the circle or ellipse can be easily set. [Structure] A template comprising a large number of circular or elliptical holes having different diameters, and the periphery of the hole is marked with a straight line extending in a cross shape from the center of the hole and / or the focus, For setting the drawing position, a cross line or a T-shaped reference line should be drawn, 4-line or 3-line edge is provided, and a mark, hole, or corner is provided to indicate the intersection of the reference lines. template.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stationery for drawing a circle or an ellipse, and in particular, for drawing a circle or an ellipse along the edge of a provided hole of the circle or ellipse. It's about templates.

[0002]

[Prior art]

 A conventionally known shape of this type of template is shown in FIG. This is an example of a template for drawing a circle, but a flat plate (1) made of plastic or the like is provided with a large number of circular holes (2) having different diameters. A pencil or the like is moved along the edge of this hole to draw a circle having a desired diameter.

To set the drawing position, first draw a cruciform or T-shaped reference line with a desired center position as an intersection, and superimpose the center indicator line (3) around the hole on the reference line. It is done by the thing. The center indicator line is a line that is engraved on the periphery of the hole in a shape that extends in a cross shape from the center of the circle, that is, the center is on the line that connects two opposing engraving lines. There is.

[Problems to be solved by the device]

However, this drawing position setting method is a very troublesome method. Usually, a T-shaped reference line with the desired center position as the intersection is drawn with a straight-line ruler and a right-angle ruler, and the center line of the template is superimposed on this T-shaped line. Moreover, there is the inconvenience of needing three stationery items. Also, aligning with a cross line is usually less accurate than aligning with a crosshair.

Further, the T-shaped line drawn as the reference line needs to be erased at the end, but the drawn circle or ellipse often intersects this reference line, and the reference line is erased with an eraser. However, there is also the inconvenience that an eraser plate is required.

The present invention has been made based on such a background, that is, to provide a template in which a drawing position can be set by a simple method that does not require other extra stationery. To aim.

[Means for Solving the Problems]

In the template according to the present invention, a reference line for setting a drawing position can be drawn, and an edge of four lines or three lines arranged in a cross shape or a T-shape is designated and an intersection of the reference lines. It is characterized by having an edge for drawing a reference line, which is composed of a stamp, a hole, or a corner.

A typical example of the template according to the present invention is shown in FIG. 1. In this case, the reference line drawing edge has a small circular marking (4) and four rectangular shapes extending in a cross shape from the marking (4). And the hole (5). One of the long sides of the rectangle forms an edge for drawing a reference line with a pencil or the like, that is, the edges of these four lines intersect at the center of the circular marking, and two orthogonal lines A-A ', Stacked on BB '. The edge length of the rectangular hole (4) should be such that a reference line slightly larger than the diameter of the largest circle or ellipse included in the template can be drawn. Moreover, it is more convenient to engrave a scale (8) indicating the distance from the center along the edge of the rectangle. On the other hand, a circular or elliptical hole in which a circle or an ellipse of a desired size is to be drawn along the edge is marked with a center indicator line (3) on the periphery thereof.

[Action]

The template of FIG. 1 is used as follows. That is, first, draw a marking point at a desired center position, superimpose a circular marking (4) on the template on the marking point, and make a cross-shaped reference along the edges of the four rectangular holes (5). Draw a line. Next, the template is moved to a position where the desired circular center indicating line (6) overlaps the reference line, and a circle or arc is drawn along the edge of the circular hole. When drawing the reference line, refer to the scale (5) that indicates the distance from the center, and if you draw the reference line while avoiding the place where you should draw a circle, erase the reference line when you erase the reference line later with an eraser. It is convenient because it does not require

As described above, with the template according to the present invention, it is possible to determine and draw a circular or elliptical drawing position only with this template. Further, since the alignment is performed with the cross hairs, the position setting accuracy is high.

【Example】

In the embodiment of the circular drawing template of FIG. 1, a circular marking is used as the center designating method, but of course this may be a rectangular marking, or a diameter of about 2 mm. The circular hole may be used as the circular drawing hole.

FIG. 3 shows an embodiment of an ellipse drawing template. Here, two sets of reference line drawing edges are prepared. That is, one is composed of a diamond-shaped stamp (4) and four rectangular holes (5) installed at an inclination of 30 °, and the 30 ° center indicator line (6) is put together. , Used for 3D drawing. The other is to insert a rectangular notch (9) on one side of the template as a reference line drawing edge, and the corner O or O ′ of the notch serves as a center indication, and the notch edge OD or O The'D 'and the edges OE and O'F forming the sides of the template serve as the reference line drawing line. Since the edge for drawing the reference line is a T-shape, the position setting accuracy is slightly low.

[Effect of device]

The template according to the present invention has an extremely simple structure, and has an advantage that the drawing position can be determined and drawn in a circular or elliptical shape only with this template.

[Brief description of drawings]

FIG. 1 is an embodiment of a circular drawing template according to the present invention.

FIG. 2 is a conventional example of a circular drawing template.

FIG. 3 is an embodiment of an oval drawing template according to the present invention.

[Explanation of symbols]

 1 flat plate 2 circular hole 3 center indication line 4 engraved 5 rectangular hole 6 focus indication line 7 oval hole 8 scale 9 rectangular cut A-A 'reference line drawing position BB' reference line drawing position O center indication For drawing O'corner for indicating center O-D reference line drawing position O'-D 'reference line drawing position O-E reference line drawing position O'-F reference line drawing position

Claims (1)

[Scope of utility model registration request] 1. A template comprising a large number of circular or elliptical holes having different diameters, and a straight line extending in a cross shape from the center of the hole and / or the focal point at the periphery of the hole. In order to set a drawing position, a cross-shaped or D-shaped reference line should be drawn, and a 4-line or 3-line edge was provided, and a marking, hole, or corner was provided to indicate the intersection of the reference lines. A template characterized by that.