JPS6327196B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ruler that moves in parallel.

Conventionally, as a ruler that moves in parallel, as shown in FIG.
There is one that is rotatably mounted and can be rolled upward or downward with the left hand to draw parallel lines.

There are also rulers for parallel lines in mechanisms using gears, screws, etc.

However, the former ruler for parallel lines using rollers can draw parallel lines by rolling roller 2 on the paper and moving ruler 1 up and down. Since the spacing had to be determined visually, it was impossible to draw equally spaced parallel lines.

In addition, the latter mechanism using gears, screws, etc. can draw parallel lines at equal intervals, but the structure is complex and requires precision in manufacturing.
It had the disadvantage of being expensive.

The present invention was made in order to eliminate the above-mentioned drawbacks, and it is possible to extremely easily set the interval of parallel movement to any equal interval, and also to be able to manufacture and use the parallel movement at low cost. It provides a ruler for use.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 2 is a side view showing an example in which the present invention is applied to a triangular ruler, in which an elastic plate-like body 2 is bent and attached to the back surface of the ruler 1. The plate-shaped body 2 is bent at an obtuse angle, and is placed at an appropriate position on the back surface of the ruler 1, and the lower end side O of the plate-shaped body 2 is parallel to the side to be used of the ruler 1. They are arranged relatively to each other and are installed in parallel.

In addition, in order to regulate the pressing amount of the lower side 4 of the ruler 1 to an arbitrary and extremely accurate constant amount, a screw hole is provided at an appropriate position A matching adjustment screw 6 is provided.

The present invention configured as described above can be used in the usual way of using a ruler. For example, the ruler 1a shown in FIG.
Hold the upper side 3a of the ruler 1a to support it, and draw a line with your right hand using a pen or the like. Next, the upper side 3 of the ruler 1a
While holding the ruler 1a lightly so that it does not separate from the surface of the paper, firmly press the lower side 4a of the ruler 1a with the thumb of your left hand.
While the lower end 5a of the ruler 1a draws an arc with
The lower end 5a of the ruler 1a moves to the position of the lower end 5 (see FIG. 3).

In other words, the ruler 1a moves backward from the position before pressing the lower side 4a of the ruler 1a with the thumb of the left hand and retreats.

At this time, the screw tip of the adjustment screw 6 disposed on the ruler comes into contact with the plate-shaped body 2a, and the amount of pushing is regulated. In addition, since the plate-shaped body is arranged parallel to one side of the ruler 1 that is to be used, the upper end side of the ruler 1 (the side that is to be used) is receded in parallel. I will have to move.

Next, apply strong force to the little finger, ring finger, middle finger, and index finger of your left hand to press and support the upper side 3 of the ruler 1, and slightly loosen the force you were applying to the lower side 4 of the ruler 1 with your left thumb. Due to the elastic restoring force of the plate-shaped body 2, the lower end 5 of the ruler 1 moves upward while drawing a circular arc using the base Y of the upper edge as a fulcrum, and the lower end 5 of the ruler 1 moves upward while drawing a circular arc.
Move to position a (see Figure 4).

Note that the lower end side O of the plate-like body 2 moves back to the position of the lower end side O' due to the above-mentioned elastic restoring force of the plate-like member 2 (see FIG. 4).

In addition, the amount of pushing (bending and stretching amount, amount of movement of the ruler, dimension of parallel line spacing) depends on the adjustment with the adjustment screw 6.
Needless to say, it is possible to arbitrarily regulate the

As mentioned above, by repeatedly repeating the above-mentioned operation, the ruler 1 can be moved toward the lower side at regular intervals, and it is therefore possible to draw parallel lines one after another at equal intervals. .

The elastic plate-like body 2 is formed by bending, and its cross-sectional shape is generally doglegged, [shaped, S-shaped,
It is possible to use a circular arc shape, etc., as long as the edges are shaped so that they do not easily slip on the paper surface when the ruler is held down to move it backwards. As for the method of attaching the part to the ruler, conventional techniques such as adhesion, fusing, and welding, as well as screwing, etc. can be used.

Note that the elastic plate-like body 2 can be made of a spring steel plate, synthetic resin, or the like, and is preferably made of a material that can minimize deformation due to repeated operations.

In addition, as another embodiment, as shown in FIG. 5, the adjustment screw 6 may be attached via a bush 7, which may be used to prevent loosening of the adjustment screw or for fine adjustment.

Furthermore, a stepped portion may be provided in a corresponding portion of the ruler 1 so that when the lower side 4 of the ruler 1 is pressed down, the plate-like body 2 is stored within the bottom surface of the ruler 1.
A recess may also be provided.

In addition, by setting the screw hole position (adjustment screw position) shown in Figure 2 at the X' position and bringing the tip of the adjustment screw into direct contact with the paper surface, it is possible to press any The amount can also be regulated.

As mentioned above, the present invention has been explained as an example in which it is attached to a triangular ruler, but it is not limited to just a triangular ruler, and can be attached to a straight ruler, circle, etc.
It can be used for various templates such as ellipses, squares, hexagons, etc., and can be used for parallel line drawings, hatching drawings, and especially for drafting spring coils and screw threads.It has an extremely useful range of applications. It is wide.

In addition to the above-mentioned effects, the present invention also eliminates the need to chamfer the edges of each side during the manufacturing process of the ruler, and creates a gap between the pen and the bottom edge of the ruler. Even when drawing, ink does not stick to the ruler, and due to the elasticity of the plate-like body of the ruler, the bottom edge of the ruler does not slide over the drawn line; A force is applied in a direction that moves away from the drawn line, and the ruler moves, so there is no bleeding, fading, sagging, etc. caused by the ink drying. In addition to drawing parallel lines, there is no problem in drawing lines in normal usage compared to the conventional method of using a simple ruler.In fact, the ruler of the present invention does not come into close contact with the paper surface, so it can be used as a ruler. The ruler can be moved extremely smoothly, and stains on the paper surface caused by the ruler sliding in close contact with the paper surface can be eliminated.

As described above, in the present invention, the lower end side of an elastic bent plate-like body is arranged and attached to the bottom side of a ruler, and an adjustment screw for regulating the amount of bending and stretching of the plate-like body is attached to the ruler. By arranging the ruler, it becomes possible to move the ruler at arbitrary equal intervals with great ease, and its utility value, usefulness, and practicality are extremely great in industry.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional parallel line ruler, Figure 2 is a front view of a conventional parallel line ruler;
The figure is a side view showing one embodiment of the present invention, FIGS. 3 and 4 are explanatory views of the operating state of FIG. 2, and FIG. 5 is a side view showing another embodiment of the present invention. In the figure, the meaning of each symbol is as follows. 1.1a...Ruler, 2.2a...Plate-shaped body, 3.
3a...upper side, 4.4a...lower side, 5.5a
... Bottom edge, 6 ... Adjustment screw, 7 ... Button,
A...paper surface, O, O'...bottom edge, Y...bottom of top edge.

Claims (1)

[Claims] 1. The lower edge of a bent elastic plate-like body is attached to the bottom of the ruler parallel to one side of the ruler, and an adjustment screw for regulating the amount of bending and stretching of the plate-like body is provided on the ruler. Features a parallel ruler.