JPH0346946Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an angle ruler configured to be able to draw arbitrary angle lines and parallel lines.

[Conventional technology]

Conventionally, a first angle ruler plate and a second angle ruler plate are pivotally supported so that they can be opened and closed, and a desired angle is determined using the ruler edge of the first angle ruler plate and the ruler edge of the second angle ruler plate. Angle rulers configured to allow angle lines to be drawn on paper are generally known.

[The problem that the idea aims to solve]

With the conventional angle ruler, it is possible to draw a desired angle line by appropriately setting the opening angle of the first angle ruler plate and the second angle ruler plate, but the same angle ruler can be used to draw parallel lines at arbitrary intervals. There was a problem that I couldn't draw lines or use it as a compass to draw arbitrary circles.

This invention was devised to solve the above-mentioned conventional problems, and its first purpose is to create a new structure that allows you to draw a desired angle line and parallel lines at arbitrary intervals using the same angle ruler. A second object of the present invention is to provide an angle ruler having a compass parts set structure in which a compass function for drawing an arbitrary circle is added to the angle ruler.

[Means to solve the problem]

In order to achieve the first object, the angle ruler of this invention has a hypotenuse for drawing an angle line that is inclined at an angle of 45 degrees with respect to the base, and an arc-like shape centered at the apex of the hypotenuse is provided on the top end of the hypotenuse. a first angle ruler plate provided with a guide portion and an arcuate long hole having a predetermined angle range;
A straight edge for drawing an angle line that opens and closes around the apex of the hypotenuse with respect to the oblique side of the angle ruler plate, a straight edge on which a linear scale parallel to this straight edge is displayed, and a straight edge provided on this straight edge. a sliding groove, a right angle ruler edge for drawing parallel lines perpendicular to the edge of the straight ruler, and an arcuate base displaying an angle scale that is fitted into the arcuate guide portion of the first angle ruler plate so as to be rotatable in opening and closing. a second angle ruler plate having an end attachment portion, the base end attachment portion being coupled with a stopper inserted through the arcuate elongated hole so that the base end attachment portion can be rotated by an angular range regulated by the arcuate elongated hole; A right-angled triangular sliding ruler plate having an engagement protrusion that is slidably inserted into a sliding groove of a parallel line drawing ruler edge and a straight ruler edge that are opposite to the right angle ruler edge of the two-angle ruler plate; The configuration includes the following.

In order to achieve the second objective, a compass mounting groove is formed at the bottom of the first angle ruler plate, and a compass needle mounting groove is cut out at a position near the edge of the right angle ruler of the second angle ruler plate. A compass needle with a handle, which is a compass component, is removably inserted into the compass needle mounting groove of the second angle ruler plate, and a compass needle insertion hole and a compass needle insertion hole are formed in the compass mounting groove of the first angle ruler plate. An elongated plate compass having a plurality of pencil center insertion holes is inserted and set in a removable manner along the bottom side of the first angle ruler plate.

[Effect]

According to the angle ruler having the above configuration, it is possible to draw an angle line at a desired angle using the hypotenuse for angle line drawing of the first angle ruler plate and the straight edge for angle line drawing of the second angle ruler plate; Parallel lines at appropriate intervals can be drawn using the right-angled ruler edge of the ruler plate and the parallel line drawing ruler edge of the sliding ruler plate. Further, by removing the plate compass from the first angle ruler plate and removing the handled compass needle from the second angle ruler plate, a circle of an appropriate diameter can be drawn using the compass needle and the plate compass.

〔Example〕

Hereinafter, an embodiment of this invention will be explained with reference to the drawings.
This first angle ruler plate 1 has a tapered chamfered oblique side 3 for angle line drawing that is inclined at an angle θ of 45 degrees with respect to the base side 2, and a side edge that is perpendicular to the base side 2. 4 and a top edge 5 parallel to the base 2, and a hypotenuse apex O on the top end side of the hypotenuse 3.
An arcuate guide part 6 centered at , and an arc elongated hole 7 having a predetermined angular range, for example, 120 degrees, are provided at the top of the side edge 4 on an extension line of the top edge 5 for angular scale adjustment. A line 8 is provided.

The arcuate guide portion 6 is integrally formed into a bulge within the arcuate step surface 9 centered at the apex O of the hypotenuse at an angle of about 220 degrees from the tapered chamfered position of the hypotenuse 3. A portion protrudes outward from the top edge 5 in an arc shape. Further, arc elongated holes 7 having an angular range of 120 degrees are drilled in the plate surface of this arc-shaped guide portion 6 at angles of 60 degrees with respect to the top edge 5. Further, a compass mounting groove 10 in the form of a lip groove is provided on the bottom side 2 of the first angle ruler plate 1 over a length of about 2 to 3 cm from the side edge 4.

Reference numeral 12 denotes a second angle ruler plate integrally molded from hard synthetic resin. a straight edge 13, a straight edge 15 with a linear scale 14 parallel to the straight edge 13, and a lip groove (dovetail groove) provided along the length of the straight ruler edge 15. groove)-shaped sliding groove 16, and a right-angle ruler edge 17 for drawing parallel lines perpendicular to the straight ruler edge 15 (this right-angle ruler edge is chamfered in a tapered shape, and a length scale 1 is provided on this chamfer).
8) and this square ruler edge 17
A compass needle mounting groove 19 (with engaging grooves 19a and 19b recessed on both side edges) formed in a substantially U-shaped notch near the position, and an opening/closing groove in the arcuate guide portion 6 of the first angle ruler plate 1. It has an arc-shaped base end attachment part 20 (an angle scale 21 from 0 to 120 degrees is displayed along the outer periphery) that is rotatably fitted, and the base end attachment part 21 is connected to an arcuate elongated hole. The second angle ruler plate 12 can be opened and closed within the 120-degree angle range regulated by the arcuate elongated hole 7 by connecting it to the arcuate guide part 6 with a screw-fastening stopper 22 that is inserted through the arcuate hole 7. The angle ruler plate 1 is attached to the first angle ruler plate 1 as shown in FIGS. 1 and 2.

23 is the linear ruler edge 15 of the second angle ruler plate 12
This sliding ruler plate 23 is a right-angled triangular slide ruler plate molded from synthetic resin that is moved along the ruler edge 24 for drawing parallel lines, which is opposite to the right angle ruler edge 17 of the second angle ruler plate 12. (this ruler edge is tapered and chamfered and a length scale 25 corresponding to the length scale 18 of the right angle ruler edge 17 is displayed on this chamfer) and the straight edge 1 of the straight ruler
5, and a stopper (not shown) for regulating the limit of the drawer movement along the sliding groove 16.

Reference numeral 27 denotes a handled compass needle attached to the angle ruler that is inserted and set in a removable manner into the compass needle attachment groove 19 of the second angle ruler plate 12, and is inserted into the engagement grooves 19a and 19b on both sides of the compass needle attachment groove 19. Projection 28
Grip handle 2 made of synthetic resin with a and 28b provided on both sides
8, and a needle 29 which is inserted and fixed to the lower end of the gripping handle 28 so that its tip projects.

30 is integrally molded from transparent synthetic resin, with a compass needle insertion hole 31 formed at one end and a plurality of pencil lead insertion holes 32, for example, 15, drilled at regular intervals (5 mm pitch in the example) in the length direction. This plate compass 30 has an engaging protrusion 33 that is removably inserted into the compass mounting groove 10 of the first angle ruler plate 1 from the lateral direction. The protrusion 33 is inserted into the compass mounting groove 10 and is set and fixed along the bottom side 2 of the first angle ruler plate 1 as shown in FIG. The portion 34 is aligned with the oblique side 3 of the first angle ruler plate 1 in the set state as shown in FIG.
It is sloped at a 45 degree angle and has a tapered chamfer. Note that the inclination length of the compass tip 34 is l, and the length of the oblique side of the first angle ruler plate 1 is L.
In this case, the straight edge 13 of the second angle ruler plate 12
The length of is L+l, and the second angle ruler plate 1
The tip end portion 14a of the straight ruler 2 is inclined at an angle of 45 degrees so as to match the oblique side 23a of the sliding ruler plate 23 when the ruler is in the closed state as shown in FIG. By setting such angles and dimensions, the entire angle ruler can be closed and stored in a rectangular state as shown in FIG. 2, allowing for space-saving transportation and storage.

Therefore, if the angle ruler having the above configuration is installed on the paper surface with the first angle ruler plate 1 and the second angle ruler plate 12 opened in rotation as shown in FIG. hypotenuse 3 for angle line drawing and second angle ruler plate 1
An angle line of a desired angle can be drawn using the straight edge part 13 for angle line drawing. Furthermore, if the slide ruler plate 23 is sequentially moved along the straight ruler edge 15 of the second angle ruler plate 12 while the paper is installed,
Parallel lines can be drawn at appropriate intervals using the right angle ruler edge 17 of the second angle ruler plate 12 and the parallel line drawing ruler edge 24 of the sliding ruler plate 23.

Furthermore, if the plate compass 30 is removed from the first angle ruler plate 1 and the handled compass needle 27 is removed from the second angle ruler plate 12, the handled compass needle 27 and the plate compass 30 can be used as appropriate. Can draw a circle with the same diameter. That is, the plate compass 30 removed from the first angle ruler plate 1 is
Insert the compass needle 27 into the compass needle insertion hole 31 of this plate compass 30 as shown in FIG. 4, and insert the pencil E into the pencil lead insertion hole 32 at the desired position.
By inserting the pencil E and rotating the pencil E around the compass needle 29, it is possible to draw a circle with an appropriate diameter determined by the selected position of the pencil lead insertion hole 32.

[Effect of idea]

Since the angle ruler of this invention has the above-mentioned structure, it is possible to draw a desired angle line and parallel lines at arbitrary intervals using one angle ruler. By using a compass needle and a plate compass, it is possible to draw an arbitrary circle, and it is possible to provide an angle ruler with a novel configuration that does not exist in the past and is highly useful.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the angle ruler of the present invention with the handle compass needle and plate compass removed; Fig. 2 is a plan view showing the angle ruler with the compass parts set closed and stored; Fig. 3 The drawing is a left side view of Fig. 2, and Fig. 4 is an explanatory view showing the operation of drawing a circle using compass parts (handled compass needle and plate compass) removed from the angle ruler. 1...First angle ruler plate, 2...Base, 3...
Oblique side, O... Hypotenuse apex, 4... Side edge, 5... Top edge, 6... Arc-shaped guide portion, 7... Arc long hole, 10... Compass mounting groove, 12... Second... Angle ruler plate, 13...Straight edge for drawing angle lines, 1
4... Linear scale, 15... Linear ruler edge, 16...
...Sliding groove, 17...Right angle ruler edge, 19...Compass needle attachment groove, 20...Base end attachment part, 21...Angle scale, 22...Stopper, 23...Sliding ruler plate, 24... ...Ruler edge for drawing parallel lines, 26...
Engagement protrusion, 27... Compass needle with handle, 30...
Plate compass, 31...Compass needle insertion hole, 32
...Pencil lead insertion hole, E...Pencil, 33...Engaging protrusion.

Claims (1)

[Claims for Utility Model Registration] (1) A hypotenuse for drawing an angle line that is inclined at an angle of 45 degrees with respect to the base, and an arc-shaped guide portion centered at the apex of the hypotenuse on the top end of the hypotenuse and a predetermined angle range. a first angle ruler plate provided with a long circular arc hole; a straight edge for drawing an angle line that opens and closes around the apex of the hypotenuse with respect to the hypotenuse of the first angle ruler plate; and a straight edge parallel to the straight edge. The edge of the straight ruler where the linear scale is displayed, the sliding groove provided on the edge of this straight ruler,
It has a right angle ruler edge for drawing parallel lines perpendicular to the edge of the straight ruler, and an arcuate base end mounting portion displaying an angle scale that is fitted in the arcuate guide portion of the first angle ruler plate so as to be rotatable in opening and closing. and a second angle ruler plate connected with a stopper inserted through the arcuate elongated hole so that the base end attachment part can be rotated by an angular range regulated by the arcuate elongated hole; It is equipped with a ruler edge for drawing parallel lines opposite to the edge of the right-angled ruler, and a right-angled triangular slide ruler plate having an engaging protrusion that is slidably inserted into the sliding groove of the straight ruler edge. Angle ruler. (2) In the angle ruler according to claim (1), a compass mounting groove is formed at the bottom of the first angle ruler plate, and a compass needle mounting groove is formed at a position near the edge of the right angle ruler on the second angle ruler plate. A notch is formed so that a compass needle with a handle, which is a compass component, can be inserted and removed into the compass needle mounting groove of the second angle ruler plate, and a compass needle can be inserted into the compass mounting groove of the first angle ruler plate. An angle ruler characterized in that an elongated plate compass having a hole and a plurality of pencil core insertion holes is inserted and set in a removable manner along the bottom side of a first angle ruler plate.