JPS6111022Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an auxiliary ruler that is attached to and used in a drafting device commonly known as a drafter.

This type of drafting equipment uses a special protractor mechanism that rotates the vertical and horizontal scales around the protractor, or moves the protractor up and down along the vertical rail, or vertically along the horizontal rail. It is possible to draw a straight line at a desired angle on the drawing board paper while moving the rail from side to side.

However, it is very troublesome to operate the protractor every time, so if you use it frequently, for example,
It would be extremely convenient if it were possible to draw straight lines at angles of 45 degrees, 60 degrees, etc. without having to use a protractor to adjust the angle. In addition, at the beginning of drafting, it is customary to draw a reference line using a horizontal scale, but if the angle of the horizontal scale is changed many times, it is difficult to accurately return it to the reference line, and some angular errors may occur. This usually occurs, and in this sense, it would be convenient if straight lines at frequently used angles could be drawn without changing the horizontal angle.

Therefore, this idea was developed by attaching it to a drawing device equipped with a protractor, so that straight lines at angles that are most frequently drawn can be drawn without changing the vertical and horizontal angles using the protractor. It is intended to provide an auxiliary ruler.

Next, an embodiment of this invention will be described based on the drawings.

Fig. 1 is a perspective view showing the proposed auxiliary ruler A separated from the drafting equipment B, Fig. 2 is a plan view showing the auxiliary ruler in use, and Fig. 3 is a sectional view taken along the line X-X in Fig. 2. It is.

Since the proposed auxiliary ruler A is attached to drafting equipment B,
For convenience of explanation, drawing equipment B will be explained first.

In drafting equipment B, a protractor board 1 is mounted on a vertical rail 2 so that it can move up and down, and a rotary protrusion 3 of the protractor board 1 has an L.
Fix the stop plate 4 in the shape of a letter, attach the vertical measure 5 to the vertical piece 4a of the stop plate 4, attach the horizontal measure 6 to the horizontal piece 4b, and fix them with screws 7, as well as the vertical measure 5 and the horizontal measure 6. Male thread for installation 8, which is non-rotatable.
The vertical and horizontal scales 5 and 6 are fixed to the stop plate 4 by passing the screws 9 through the stop plate 4, and screwing and tightening female screws 10 and 11 onto the tips of both male screws 8 and 9.

Next, the proposed auxiliary ruler A is a mounting plate 1 molded from a transparent synthetic resin material and formed into an L-shape as a mounting part.
An auxiliary ruler main body 13 is provided on the inner corner side of the main body 13.
It is integrated with the mounting plate 12 by a narrow support piece 14 protruding from the vertical piece 12a thereof. Mounting plate 12
is provided with notches 15 and 16 that can be engaged with the male threads 8 and 9 for attaching the scale in both the vertical and horizontal pieces 12a and 12b so that it can be fixed on the stop plate 4 of the drafting equipment B,
The opening 17 of one notch 15 is expanded in a circular direction with the other notch 16 as the center.

The auxiliary ruler body 13 has an isosceles triangular piece 19 connected to the upper end of a trapezoidal piece 18, a mountain-shaped hole 20 is provided in the center of the trapezoidal piece 18, and
The triangular piece 1 has 60 degree inclined lined edges 21, 21.
9, on both sides of which are 45 degree inclined lined edges 22, 22;
The angle-shaped hole 20 is formed with a 30 degree inclined line edge 23. Also, a suitable distance is provided for the horizontal piece 12b of the mounting plate 12, so that a space 24 is formed between the main body 13 and the horizontal scale 6. Furthermore, the support piece 14 is bent downward to separate the main body 13 from the vertical and horizontal scales 5 and 6.
The lower surfaces of the two are configured to be on the same plane.

When using the auxiliary ruler A of this invention, first remove or loosen the female screws 10, 11 for attaching the scale of the drafting device B, and then engage the notches 15, 16 with the male screws 8, 9. Tighten. In addition, when the opening 17 of one of the notches 15 is widened, it is suitable for engagement simply by loosening the female screws 10 and 11. At that time, the other notch 16 is first engaged, and the one notch 15 is engaged with the male screw 8 while rotating the auxiliary ruler A around the male screw 9 there.

After attaching the auxiliary ruler A to the drafting equipment B, since there is a space 24 between the auxiliary ruler main body 13 and the vertical scale 5, the main body 13 can be removed with the auxiliary ruler A attached.
A reference line can be drawn below with the horizontal scale 6 of drafting equipment B, and based on that reference line, the auxiliary ruler main body 13
When drawing a line using the ruler, there is no need to move the position of the main body 13 much, and the auxiliary ruler main body 13 can be moved at the appropriate position while moving the protractor 1 vertically and horizontally without having to adjust the angle using the protractor 1. The inclined line drawing edges 21, 22, 23, which are located in the
can be used to draw lines at the most frequently used angles, such as 30 degrees, 45 degrees, 60 degrees, etc., and it is even more convenient to provide a scale 25 on each drawing edge. Furthermore, the proposed auxiliary ruler A is attached to the drawing equipment B by fixing the mounting plate 12 on the stop plate 4 for attaching the scale, and the main body 13 is supported by the narrow support piece 14. There is no problem in using the vertical and horizontal scales 5 and 6 of drafting equipment B, and lines that cannot be drawn with the auxiliary ruler A are drawn using the vertical and horizontal scales 5 and 6. In addition to the above lines, frequently used angle lines include vertical lines and horizontal lines, but these lines can be drawn using the vertical and horizontal scales 5 and 6 without adjusting the angle on the protractor 1. It is not necessary to form these line drawing edges on the ruler body 13.

As described above, according to this invention, it is possible to draw lines at the most frequently used angles without adjusting the angle using a protractor by using an auxiliary ruler that is easily attached to and detachable from a drafting device equipped with a protractor. Since the number of tedious adjustment operations is greatly reduced, drafting work efficiency can be greatly improved. In particular, these days, drawings such as architectural drawings are scaled down to a considerable extent, so this method is ideal for drawing such drawings. Furthermore, even if the auxiliary ruler of the present invention is attached to a drawing device, there is no problem in drawing reference lines using a horizontal scale. Moreover, as long as you use an auxiliary ruler or draw vertical or horizontal lines, the angle of the horizontal scale does not change, so you can accurately return the horizontal scale to the reference line, and this invention has many excellent effects. be.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the auxiliary ruler of this invention separated from the drafting equipment. FIG. 2 is a perspective view showing how the auxiliary ruler is used. FIG. 3 is a sectional view taken along the line X--X in FIG. 2. A... Auxiliary ruler, B... Drafting equipment, 1... Protractor, 2... Vertical rail, 3... Rotating protrusion, 4... Stop plate, 4a... Vertical piece of stop plate, 4b... Horizontal piece, 5...
Vertical scale, 6... Horizontal scale, 7... Screw, 8, 9... Male thread, 10, 11... Female thread, 12... Mounting plate, 1
2a...Vertical piece of mounting plate, 12b...Horizontal piece, 13...
...Auxiliary ruler body, 14...Support piece, 15, 16...
...Notch, 17... Opening, 18... Trapezoidal piece, 1
9...Isosceles triangular piece, 20...Drilled hole, 21,2
2, 23... Slanted lined edge, 24... Space, 25
……scale.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. The drawing device is formed into an L-shape so that it can be fixed on the L-shaped stop plate for attaching the scale of a drawing device equipped with a protractor, and the vertical and horizontal sides of the L-shape are attached to both the vertical and horizontal sides of the drawing device. A mounting part with a notch that can be engaged with a male screw for installing a shaku, an auxiliary ruler body with several types of frequently used slanted line drawing edges, and an auxiliary ruler bent downward from the mounting part and placed on the inner corner side. An auxiliary ruler for a drafting device, which comprises a narrow support piece that supports a main body, and wherein the mounting portion is integrally formed with the auxiliary ruler main body via the support piece. 2. The auxiliary ruler according to claim 1 of the utility model registration claim, in which a scale is provided on the inclined line drawing edge of the auxiliary ruler body.