JP2017019160A - Equal ratio division device (device for drawing perspective line having disappearance point outside page space in illustration of funny picture and so on) - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which can easily draw a perspective line having a disappearance point outside a page space.SOLUTION: A device including compass-like legs which indicate two points, and a leg having means (knurl screw), which can freely designate between said two points and fix a distance ratio, is manufactured. When two of points indicated by these three legs are located on two line segments, and the other point is located at a point where a perspective line to draw is started, the knurl screw is fastened, the device is moved near an end edge of the perspective line to draw, and the legs are so opened and closed that said two points are located again on said two line segments, said the other point indicates the end edge of the perspective line to be drawn.SELECTED DRAWING: Figure 1

Description

The present invention relates to an instrument used for drawing cartoons, illustrations, drawings, and the like.

Conventionally, in order to accurately draw a perspective line with a vanishing point outside the paper surface when creating an illustration, fix the paper on the floor etc., fix the vanishing point far away with a thumbtack, etc., and draw using a long ruler There was a need to use an instrument called Too Perth Ruler 2 or an instrument called an equally divided divider.
However, the method of actually taking the vanishing point requires labor and space, and when using the Perth Ruler 2, it is necessary to perform a troublesome work of drawing an auxiliary line as a preliminary preparation. It was troublesome. When using an equally divided divider, it is possible to draw an accurate grid, but it is impossible to draw a line that passes through the vanishing point starting from an arbitrary point, and it is necessary to draw a perspective line rather than an instrument that can draw a perspective line. A tool that draws a grid that can be used as a reference when drawing is more accurate.
In any case, only a laborious method has been left to draw a perspective line having a vanishing point outside the paper.

JP2001-105788

An instrument for drawing a perspective line having a vanishing point outside the paper in a less troublesome manner.

Arbitrary points on a straight line Point to 3 points, store the distance ratio of 3 points in that state, and make a device that can scale the distance of 3 points while maintaining the distance ratio of 3 points. This completes an instrument that can easily point to the perspective line to be drawn.

By using the product of the present invention, if there are two line segments, draw a line segment that passes through the point (disappearance point) that intersects when the two line segments are straight and passes through the point specified by the user. It is possible to point out the point that becomes an index for the purpose, and it is possible to easily draw a perspective line without the need to draw an auxiliary line.

1 is an overall view of a product of the present invention.

The product of the present invention is an upper leg and a second leg that move like a compass. A leg that covers the leg and is pointed at a point between the point of the leg and the leg. It consists of parallelogram-shaped guide rails and knurled screws at the intersection of the heel and heel.
The upper and lower legs are opened and closed, and the distance between the points indicated is enlarged or reduced. The leg can move freely in the horizontal direction and is always parallel to the upper leg. Also, the point pointed by the leg is always on a straight line connecting the point pointed by the upper leg and the point pointed by the second leg.
Guide rails exist to keep the heels parallel to the upper legs and to prevent them from moving up and down.
As a result, each point of Kai is free to move to any three points on the straight line specified by the user.
After specifying any 3 points, tighten the knurled screw.
The knurled screw part is equipped with a thrust bearing, and when the screw is tightened, the movement of the hook leg is restricted with respect to the leg, but the rotation is allowed.
After tightening the knurled screw, opening and closing the upper leg and the second leg will indicate that the saddle leg maintains the three-point distance ratio.

1 Upper leg 2 Last leg 3 Leg 4 Guide rail 5 Knurled screw

Claims (1)

It has an element that can point to 3 points on any straight line, or a writing instrument that can point to 3 points on any straight line, it can memorize the distance ratio of those 3 points, and keep the distance ratio of 3 points An instrument that can expand and reduce the distance of three points.

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