JPH0321994Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a right-angled parallel ruler that can quickly and easily draw right-angled broken lines, parallel lines, extension lines, etc.

[Conventional technology and problems to be solved]

Generally, rulers have a long rectangular structure,
Its surface has only some markings in the length direction, and its basic function is to draw only horizontal lines, and it cannot draw other lines such as parallel lines, right-angled broken lines, extended straight lines, etc. , it was not possible to draw directly, and in order to carry out these drawing tasks, it was necessary to measure several times to set a fixed point, and then move the ruler to draw the drawing. At that time, errors occur when measuring and setting fixed points, and the drawn parallel lines, perpendicular broken lines, or extended straight lines lose accuracy, making it impossible to achieve the basic purpose of accurate drawing. It's something that doesn't exist.

Therefore, the present inventor thoroughly investigated the drawbacks and problems of the rulers currently in use, researched the structure of an improved ruler with general drafting functions, and created a ruler that can easily, quickly and accurately draw parallel lines. We decided to provide a ruler that can draw right-angled broken lines, extended straight lines, etc.

[Means and actions for solving problems]

In order to solve the above-mentioned problems with conventional rulers, the present invention forms a horizontally long U-shaped through groove in a single long rectangular ruler body made of transparent plastic material, and extends the through groove in the horizontal direction. a groove and a longitudinal groove joined at right angles to both ends of the lateral groove; a subdivision line is disposed along the groove on the body surface below the lateral groove; A right-angled parallel ruler is constructed by distributing a large number of longitudinal subdivision lines at regular intervals along the longitudinal groove and on the surface of the main body between both longitudinal grooves.

According to the right angle parallel ruler configured as described above, the horizontal U of the ruler body can be drawn using a writing instrument such as a pencil.
By using the glyph penetration groove as a guide to draw a straight line, moving the ruler body using a writing instrument as a guide, and using the subdivision line as a setting reference, you can quickly and accurately draw parallel lines, right-angled broken lines, extended straight lines, etc. can be easily drawn.

〔Example〕

Examples will be described below. FIG. 1 is a plan view showing an embodiment of a right angle parallel ruler according to the present invention. The basic structure of the present invention includes an elongated rectangular ruler main body 1 made of transparent plastic material, and a horizontally elongated U-shaped through groove is formed on the main body 1. is the horizontal groove 2a
and a vertical groove 2 provided at both ends of the horizontal groove 2a.
b, and each groove 2
a and 2b are connected at right angles to each other.

To describe the more specific configuration for implementation,
The horizontal groove 2a is formed at a position 1.5 cm from the lower edge of the ruler main body 1 over a length of 30 cm, and the vertical groove 2a is formed at a position 1.5 cm from the lower edge of the ruler body 1.
b is connected to the vertical groove 2a and has a total length of 3 cm. Further, the width of the entire through groove consisting of the horizontal and vertical grooves 2a and 2b is set to 1 mm. This width is an appropriate dimension for drawing by inserting the tip of a pencil or the like.

On the surface of the ruler main body 1, horizontal subdivision lines 3a and vertical subdivision lines 3b, which are used as readout scales, are provided outside the through grooves. A transverse subdivision line 3a therein is arranged along the transverse groove 2a on the body 1 below said groove 2a. On the other hand, the vertical subdivision lines 3b are arranged along the longitudinal groove 2b, and are further intermittently distributed in large numbers at intervals of 2 cm on the surface of the ruler main body between both longitudinal grooves 2b.

At the end of each slot of the horizontal groove 2a and the longitudinal groove 2b, an arrow mark 4a, 4b is arranged, each extending to the end edge of the ruler body 1,
It is structured to enhance the functionality of sign symbols.

Next, a case in which an extension line is drawn using the ruler configured as described above will be described with reference to FIG. 2. First, a straight line 6 is drawn using a pencil using the horizontal groove 2a as a guide. If the tip 5 of the pencil reaches the end of the horizontal groove 2a and you cannot draw a longer straight line, move the tip 5 of the pencil to the end of the horizontal groove 2a.
Move the ruler body 1 laterally to the right as shown by the arrow while holding it at the distal end position, and use the arrow mark 4a or the lateral groove 2a to move the moved arrow mark 4a' or the lateral groove. 2a is made to coincide with the straight line 6 drawn earlier. Next, by moving the tip 5 of the pencil again along the lateral groove 2a and drawing a straight line, a long extended straight line can be drawn. By repeating such operations, an infinitely extended straight line can be easily created.

Next, the case of drawing parallel lines will be explained with reference to FIG. First, in the same way as when drawing the previous straight line, a straight line 6 is drawn using the horizontal groove 2a. Next, place the tip 5 of the pencil so that it can be aligned with the vertical groove 2b, move the ruler body 1 downward by the desired dimension, and align the previously drawn straight line 6 with the predetermined position of the vertical subdivision line 3b. By the way,
To set the positioning of a ruler body 1 with high precision. A new straight line parallel to the original straight line 6 is then created by taking out the pencil tip 5 and drawing a straight line along the transverse groove 2a' located at the new position.
The distance between both parallel lines is determined by the width of the downward movement of the ruler main body 1, and within 3 cm, that is, within the length range of the vertical groove 2b, the ruler main body is moved using the vertical groove 2b as a guide. Parallel lines having a predetermined interval can be easily drawn by simply moving downward once.

If the distance between parallel lines exceeds 3 cm, you can easily draw parallel lines with any distance by using the method for drawing extended straight lines described above. You can create an unlimited number of them.

FIG. 4 is a diagram showing a mode in which a right-angled broken line is drawn using a ruler according to the present invention. In this case, first, one straight line 6 is created using the horizontal groove 2a in the same way. Next, while holding the tip 5 of the pencil at the distal end of the lateral groove 2a, the ruler body 1 is turned 90 degrees counterclockwise using the tip 5 as a central fulcrum. Then, by drawing a straight line along the new transverse groove 2a' after this position change operation, a right-angled fold line is obtained. At this time, it is easy to confirm whether the ruler body 1 has been turned 90 degrees accurately by checking whether the turned arrow mark 4b' or the vertical groove 2b in the symmetrical position matches the original straight line 6. I can do it.

[Effect of idea]

As explained in the above embodiments, the present invention utilizes the horizontally elongated U-shaped through groove as a guide during drafting, so that the function and effect of a ruler can be exhibited and ideal results can be obtained.

In that case, use the tip of a writing instrument such as a pencil to hold it at a stop position on the through groove to act as a guide when moving the ruler body, and the holding position will be maintained during the next continuous line drawing operation. It can be provided as a reference position. Then, by using subdivision lines or arrow markers, they can be used as other reference points to confirm accurate movement and switching operations, and can also be applied to the construction of subsequent continuation lines. can do.

By applying each component to each other in this manner, it is possible to provide a fast and accurate method for drawing parallel lines, a method for drawing right-angled broken lines, a method for drawing extended straight lines, etc.

The right angle parallel ruler according to the present invention has a clearly greater effect than the commonly used straight ruler, that is, it has a revolutionary effect in drawing parallel lines, right angle broken lines, extension lines, etc. , which is extremely useful to designers.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the right angle parallel ruler according to the present invention, FIG. 2 is an explanatory diagram showing how to draw an extension line using the ruler, and FIG. 3 is a diagram showing how to draw parallel lines. The explanatory diagram shown in FIG. 4 is also an explanatory diagram showing a drafting mode of a right-angled fold line. In the figure, 1 is the ruler body, 2a, 2a' are horizontal grooves, 2b, 2b' are vertical grooves, 3a is horizontal subdivision line, 3b is vertical subdivision line, 4a, 4b, 4a', 4
b' indicates an arrow mark, 5 indicates the tip of the writing instrument, and 6 indicates a horizontal straight line.

Claims (1)

[Claims for Utility Model Registration] (1) A single long rectangular ruler body formed using a transparent plastic material, and a horizontally long U-shaped through groove is formed in the ruler body. is divided into a horizontal groove and a vertical groove joined at right angles to both ends of the horizontal groove, and a subdivision line is arranged along the groove on the body surface below the horizontal groove. A right-angled parallel ruler characterized in that a large number of longitudinal subdivision lines are distributed at regular intervals along both longitudinal grooves and on the surface of the main body between the longitudinal grooves. (2) The horizontal groove is 30cm long and is located 1.5cm from the side edge of the ruler body, and the vertical groove is 3cm long.
The width of each groove is set to 1 mm, and the interval between the vertical subdivision lines is set to 2 cm, as set forth in claim 1 of the utility model registration claim. right angle parallel ruler.