JPH0732793A - Composite ruler - Google Patents

Abstract

PURPOSE:To obtain one composite ruler by combining a diagonal ruler and a trigonometric function ruler to allow its handling to be convenient, and combining also with a length ruler. CONSTITUTION:The composite ruler comprises a board 1 in which an upper edge 2 is linear in a lateral direction, a length size ruler in which a length scale 3 is formed partly at the edge 2 of the board 1, a diagonal ruler 5 for reading a length of a diagonal of a regular square or a regular hexagonal shape on the board 1 and a trigonometric function ruler 6 for reading lengths and angles of sides of a triangle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite ruler which is convenient for use when drawing product parts or the like in a factory or when reading a drawing.

[0002]

2. Description of the Related Art Conventionally, when a square or regular hexagon is drawn in a factory, for example, the length of one side of the square or regular hexagon is determined, or the length between opposite sides of the square or regular hexagon is determined. The method of drawing the length of the diagonal line from the length and deriving it with a calculation formula was used. Furthermore, when reading the ratio or length dimension or angle of each side such as the taper part of the product part in a factory or drawing it, for example, a ruler for length, protractor, etc. must be prepared separately for each. In addition, a separate ruler or calculator was required to read the length dimension or angle and to determine the length dimension of each side for plotting.

[0003]

As described above, in the method of calculating the length dimension of a diagonal line after determining the length dimension between opposite sides of a square or regular hexagon in a factory or the like, the calculation formula is immediately calculated. It would be nice if the computer was issued and a computer was at hand, but often I could not remember the formula, and sometimes the computer was not at hand, so I could not draw easily. Also, in order to read the length dimension or angle of a triangular part of a product part or the like in a factory or to determine the dimension for drawing, a length dimension ruler, a protractor or a calculator is required, If these are not at hand, there is a problem that the reading or drawing cannot be performed. In the case of this triangle, as shown in FIG. 7, the base a, the hypotenuse b, and the height c of the right triangle are shown.
In addition, it is only necessary that the angle α between the base a and the hypotenuse b can be read or determined.

In view of the above problems, the inventor can immediately obtain the length of the diagonal line by determining the length between the opposite sides when drawing a square or regular hexagon, or Conversely, if you decide the length of the diagonal,
We have developed and proposed a new diagonal ruler that can instantly find the length between the opposite sides of a square or regular hexagon, and at the same time read the length and angle of each side of a right triangle very easily. We have also developed and proposed a new trigonometric ruler that can do and draw. However, since the diagonal ruler and the trigonometric ruler proposed at the same time are different from each other, they must be carried separately, which is troublesome, and in some cases, one of them may be lost.

An object of the present invention is to combine the diagonal ruler and the trigonometric function ruler to make them convenient to handle, and to combine them with the length ruler to form one compound ruler. It is a thing.

[0006]

To this end, in the composite ruler of the present invention, a substrate whose upper edge is linear in the left-right direction is provided,
A length ruler with a length scale formed on a part of the upper edge of this board is provided, and a diagonal ruler for reading the length of a square or regular hexagonal diagonal on the board and the length of each side of the triangle and A trigonometric ruler for reading an angle is provided.

The diagonal ruler is provided with an index needle having a center axis on the substrate and displaying an index line rotatable about the center axis, and an arc-shaped 2 to 3 pointed by the index line about the center axis. Three scale lines are displayed, one of which is the length dimension between the opposite sides of a square or regular hexagon, and the remaining one or two are the length of the square or regular hexagonal diagonal line indicated by the index line. It is preferable to display the dimensional scale having a length corresponding to the dimension.

The trigonometric ruler has a bottom scale line extending in the left-right direction on the substrate, and a block having a bottom scale index line is slidably provided on the substrate in the left-right direction. A height scale rod having a long height scale line is provided slidably in the vertical direction, and this block has a height scale index line and a hypotenuse scale rod having a hypotenuse scale at the upper end of the board. The line is made substantially coincident with the upper end side of the substrate, and the base end portion is provided as a shaft so as to be rotatable.
An angle graduation rod having an arc-shaped angle graduation along an arc centered on the base rotation axis is provided at the tip of the hypotenuse graduation rod,
It is preferable that an index needle having a hypotenuse scale index line is provided at the tip of the height scale rod, and the angle scale index line is provided on the substrate. Further, while the step portion is provided on the hypotenuse scale rod in parallel with the hypotenuse scale, a step portion is also provided on the hypotenuse scale indicator needle, and the step portion is engaged with the step portion of the hypotenuse scale rod, and An index needle for the hypotenuse scale may be rotatably supported at the tip of the height scale rod.

[0009]

In the composite ruler of the present invention, the length dimension is read by the length dimension ruler, and the square ruler is read by the diagonal ruler.
Read the diagonal line of a regular hexagon and read the length and angle of each side of the triangle with a trigonometric ruler.

In particular, according to the diagonal ruler, when the index needle is turned to indicate the length dimension scale between the opposite sides of a square or regular hexagon, this index line indicates the length of the square or regular hexagonal diagonal line. Indicate the dimensions and vice versa,
If the index line indicates the length dimension of a square or regular hexagonal diagonal line, the length dimension between the opposite sides of the square or regular hexagon is indicated.

Further, according to the trigonometric ruler, the block is slid to the left on the substrate, the length of the bottom side a of the triangle is read by the bottom scale indicated by the bottom scale index line, and the height scale rod is moved upward. Slide the slide mark to read the height c of the triangle by the height scale indicated by the height scale index line. At that time, the height scale rod pushes the hypotenuse scale rod upward to rotate about the axis, and the hypotenuse scale line indicates. Read the length of the hypotenuse b of the triangle using the hypotenuse scale. Then, the angle scale rod is moved by the inclination of the oblique side scale rod, the angle scale is indicated by the angle scale index line, and the angle indicates the angle α formed by the base a of the triangle and the slope b and is read.

[0012]

1 shows a preferred embodiment of the composite ruler of the present invention. In the figure, 1 is a substrate, and its upper end side 2 is linear in the left-right direction. A length scale 3 is provided on the upper side 2 of the right half of the substrate 1. Further, a plurality of circular through holes 4 for circular drawing are formed in the substrate 1. In addition to circular through holes, through holes having other shapes such as ellipses may be formed here. A diagonal ruler 5 is provided in the middle of the substrate 1. The diagonal ruler 5 will be described later in detail. Further, a trigonometric ruler 6 is provided on the left side of the substrate 1, and the trigonometric ruler will also be described later in detail.

The details of the diagonal ruler 5 are shown in FIGS. Three arc-shaped graduation lines 12, 13, 14 are displayed on the substrate 1, and a central axis 18 is provided at the center position of the circular arc, and an index needle 1 which can be rotated about this central axis 18
9 is provided, and an index line 20 is displayed on the index needle 19.

The arc-shaped scale lines 12, 13,
On the innermost scale line 12 of 14 is shown a scale 15 having a square or regular hexagonal length dimension between opposite sides.
The length dimension between opposite sides of a square is the same as the length dimension of its one side. In addition, a regular hexagonal diagonal scale 16 is shown on the middle scale line 13, and the outermost scale line 1 is shown.
4 shows a square diagonal graduation 17, and these graduations 16 and 17 are squares or regular hexagons each having a length dimension between opposite sides of the square or regular hexagon indicated by the indicator line 20 of the indicator needle 19. The length dimension of the diagonal line of is displayed. In the above embodiment, the graduations of both square and regular hexagonal diagonal lines are displayed on the same substrate, but only one of the graduations may be displayed.

4 to 6 show details of the trigonometric ruler 6. The angle scale in the embodiment shown in the figure accurately represents the angle, but the bottom scale, the height scale and the hypotenuse scale do not represent a length unit but a mutual contrast number. Of course, this scale may be a unit scale of length. At the intermediate position of the position occupied by the trigonometric ruler of the substrate 1, there is provided a bottom scale 23 that is long in the left-right direction and indicates the length of the bottom side a of the triangle. An elongated hole 24 is formed in the left-right direction in parallel with the bottom scale 23. Reference numeral 25 is a block, and the mounting member 26 is fitted in the elongated hole 24 so as to be slidable.
Has been formed. The mounting structure of the block 25 does not have to use the long hole, and the point is that it can slide left and right.

In the figure, 28 is a height scale rod, which is used for the block 2
It is slidable by penetrating through the hole 29 formed in 5, and the height scale rod 28 is provided with a height scale 30 showing the length of the height c of the triangle. The height scale 30 is perpendicular to the bottom scale 23, and the block 2
A height graduation index line 34 is formed by one side of 5. An index needle 31 having a hypotenuse index line 32 indicating a hypotenuse, which will be described later, is provided at the upper end of the height graduation rod 28. The index needle 31 is pivotally supported by a shaft 33 at the tip of the height scale rod 28 so as to rotate.

Reference numeral 35 in the drawing denotes a hypotenuse scale rod, which has a hypotenuse scale 36, and the scale line thereof is substantially aligned with the upper end side 22 of the substrate 21. The hypotenuse scale rod 35 is rotatably provided with its base end located at the right end pivotally supported on the substrate 1. Then, the height scale 30 of the scale rod 28 is used as the index line 3 to indicate the position of this shaft support.
4 is aligned with the axis 33 of the index needle 31 indicating the hypotenuse scale 36 at the position where the 0 scale is indicated by 4.
The hypotenuse scale rod 35 has a step portion 37 in parallel with the hypotenuse scale 36. On the other hand, the index needle 31 that points to the hypotenuse scale 36 also has stepped portions 38 on the lower surface thereof, and these stepped portions 37 and 38 are engaged with each other, whereby when the hypotenuse scale rod 35 is turned and becomes slanted. The index needle 31 is also rotated diagonally to indicate the correct hypotenuse scale.

Reference numeral 39 denotes an angle scale rod, which is the oblique side scale rod 35.
Is provided at the tip end of the arcuate scale rod 35, and has an arc shape along an arc centered on the base end rotation axis of the hypotenuse scale rod 35, and has an angle scale 40 on the outer side thereof. At the upper left end of the substrate 1, there is a pressing plate 40 that supports the angle graduation rod 39 so as not to rise upward, and the pressing plate 40 has an angle graduation index line 42.

The diagonal ruler of the composite ruler of the present invention having the above-mentioned structure is used as follows. First, when the length of one side of the square is determined, the index needle 19 is rotated to align the index line 20 with the scale of the scale line 12.
Then, the scale 17 of the scale line 14 showing the diagonal line of the square pointed by the index line 20 is the length dimension of the diagonal line of the square. Similarly, the length dimension of the diagonal line of the regular hexagon is also displayed by the scale 16 of the scale line 13. On the contrary, if the length dimension of the diagonal line of the square or regular hexagon is determined, the length dimension between the opposite sides of the square or regular hexagon can be easily known.

Next, according to the trigonometric ruler of the composite ruler of the present invention, by sliding the block 25, the length of the base a of the triangle is read or determined by the base graduation 23 and the base graduation index line 27, and in the same manner, The height graduation rod 28 is slid to read or determine the length of the height c of the triangle with the height graduation 30 and the height graduation index line 34, and the slant graduation is linked with the sliding of the height graduation rod 28. The rod 35 rotates,
The length of the oblique side b of the triangle is read or determined by the oblique side scale 36 and the oblique side scale index line 32. At the same time, the angle α between the base of the triangle and the hypotenuse is known from the angle scale 40 of the angle scale rod 39 and the index line 42 for the angle scale.

[0021]

As described above, according to the composite ruler of the present invention, one ruler can be used as a ruler for a normal length dimension, as a diagonal ruler, and as a trigonometric function ruler. Can be used, is very convenient to actually use, and has a great effect in practical use.

[Brief description of drawings]

FIG. 1 is a plan view of a preferred embodiment of the composite ruler of the present invention.

FIG. 2 is a plan view of a diagonal ruler portion of the ruler of the present invention.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a plan view of a trigonometric ruler portion of the compound ruler of the present invention.

FIG. 5 is a plan view of the same usage state.

6 is a sectional view taken along line BB in FIG.

FIG. 7 is a diagram showing a triangle.

[Explanation of symbols]

 1 substrate 2 upper end side 3 length dimension scale 4 circular through hole 5 diagonal ruler 6 trigonometric function ruler 12, 13, 14 scale line 15, 16, 17 scale 18 center axis 19 index needle 20 index line 23 bottom scale 24 long hole 25 Block 26 Mounting member 27 Bottom scale index line 28 Height scale rod 29 Hole 30 Height scale 31 Index needle 32 Oblique scale index line 33 Shaft 34 Index line 35 Oblique side scale rod 36 Oblique side scale 37, 38 Step portion 39 Angle scale rod 40 Angle Scale 41 Holding Plate 42 Index Line for Angle Scale

Claims (4)

[Claims] 1. A substrate having a straight upper end edge in the left-right direction is provided, and a length dimensional ruler having a length scale is provided at a part of the upper end edge of the substrate, and a square or regular hexagonal shape is provided on the same substrate. A compound ruler is provided which is provided with a diagonal ruler for reading the length of the diagonal line and a trigonometric ruler for reading the length and angle of each side of the triangle. 2. The diagonal ruler is provided with an index needle having a center axis on the substrate and displaying an index line rotatable about the center axis, and having a circular arc shape indicated by the index line about the center axis. Display two to three scale lines, one of which shows the length dimension scale between the opposite sides of a square or regular hexagon, and the remaining one or two of the square or regular hexagonal diagonal line indicated by the index line. The composite ruler according to claim 1, which is configured by displaying a dimensional scale having a length corresponding to the length dimension. 3. The trigonometric ruler has a bottom scale line extending in the left-right direction on the substrate, and a block having a bottom scale index line provided on the substrate slidably in the left-right direction. A height scale rod having a long vertical scale line is provided slidably in the vertical direction, and this block has a height scale index line and a hypotenuse scale rod having a hypotenuse scale at the upper end of the board. The scale line is made substantially coincident with the upper end side of the substrate so as to be rotatable around the base end portion as an axis,
An angle graduation rod having an arc-shaped angle graduation along an arc centered on the base rotation axis is provided at the tip of the hypotenuse graduation rod,
2. The composite ruler according to claim 1, wherein an index needle having a hypotenuse index line is provided at a tip of the height scale rod, and the angle scale index line is provided on a substrate. 4. The stepped portion is provided on the hypotenuse scale rod parallel to the hypotenuse scale, and the stepped portion is also provided on the hypotenuse scale indicator needle, and the stepped portion and the stepped portion of the hypotenuse scale rod are engaged with each other. Then
4. The composite ruler according to claim 3, wherein the hypotenuse scale index needle is rotatably supported at the tip of the height scale rod.