JP5054243B1 - Linear ruler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a state when stored in a pen case or the like and to select a shortened state or an extended state according to the work contents when using it, but with a thin and straight edge on a paper plane or the like Distributing the drawing line due to a change in the relative angle between the pen and the paper plane when the pen tip is run along the straight edge and the relative position between the paper plane and the straight edge is high. There is a need for an idea that the linear ruler does not move easily due to the force applied to the straight edge of the linear ruler from the tip of the pen or knife when performing drawing or cutting work on a paper plane etc. Yes.
SOLUTION: A shape having a width that becomes narrow in the longitudinal direction in the extended state and a straight edge (6) that is approximately equal to the entire length in the longitudinal direction is provided on at least one of the width edges (4), and in a shortened state. A straight edge (24) approximately equal to the entire length in the longitudinal direction is provided on at least one of the width edges (31).
[Selection] Figure 6

Description

  The present invention relates to a straight ruler.

  In the linear ruler, as in the embodiment of Patent Document 1, a plurality of rectangular strip-shaped long portions are overlapped in the thickness direction and connected to each other so as to be able to swing, and there are shortened states in which the longitudinal directions of the plurality of long portions lie close to each other. And an extended state in which it is swung 180 degrees and connected in the longitudinal direction.

  In the straight ruler, as shown in FIGS. 7 and 8, two rectangular strip-shaped long portions are connected by swinging shafts provided in the vicinity of each vertex, and the longitudinal direction of the two long portions is There is an idea that has a shortened state that is overlapped in the width direction so as to snuggle up and an extended state that is swung 180 degrees therefrom and connected in the longitudinal direction.

JP 2001-264002 A

With a straight line ruler, it can be shortened when stored in a pen case, etc., and when used, the shortened state and extended state can be selected according to the work content, but the thickness is thin and the straight edge is the plane of the paper. Can be placed along the line, etc., the visibility of the relative position between the paper plane and the straight edge is high, and when the pen tip is run along the straight edge, the drawing line due to the change in the relative angle between the pen and the paper plane When drawing or cutting work on a flat paper surface, etc., the idea is that the linear ruler is difficult to move due to the force applied to the straight edge of the linear ruler from the tip of the pen or knife. However, in the shortened state of the idea as in Patent Document 1, the thickness of the straight edge is too thick and the visibility is poor and the drawing line is easily disturbed. In the extended state, the edge is stepped and straight. No edge Easy streaked become rattled.
Further, in the idea such as Patent Document 1 and FIGS. 7 and 8, since the long portion whose width is narrowed in consideration of the storage property is difficult to be pressed against the paper plane with the fingertip in the extended state, the bending rigidity is relatively low. The force applied from the pen or knife makes it easy for the straight line ruler to move, and when a scale is placed on the edge, the finger to be pressed interferes with the scale, making it difficult to see the scale.

  Embodiments of the present invention will be described below with reference to the drawings. However, this is intended to make the contents of the present invention easier to understand, and does not reduce the scope of the appended claims.

The straight line ruler according to the invention 1 is, for example , any one of the combination of FIGS. 1, 2, 3, 5 and 6 and the combination of FIGS.
Extended state and FIG. 2, 6 as shown in FIG. 1, 9, a straight ruler 1 having a shortened state as 10,
The extended state in which the long portions 2 and 3 are connected in the longitudinal direction;
The shortened state in which the long portions 2 and 3 are overlapped in the thickness direction and connected so that the longitudinal direction of the long portion 3 is close to the longitudinal direction of the long portion 2;
Have
In the extended state, at least one of the two width edges is provided with a straight edge 6 having a shape that becomes narrower in the longitudinal direction and approximately equal to the entire length in the longitudinal direction,
In the shortened state, the straight ruler includes a straight edge 24 approximately equal to the entire length in the longitudinal direction on at least one of the width edges 31.

The straight line ruler according to the invention 2 is the straight line ruler of the invention 1,
The extended state as shown in FIG. 1 in which one end portion 14 of the long portion 3 is connected to the other end portion 13 of the long portion 2;
The shortened state as shown in FIGS. 2 and 6 in which the direction from the one end 12 to the other end 13 of the long portion 2 and the direction from the one end 14 to the other end 15 of the long portion 3 coincide with each other.
It is a straight line ruler.

The straight line ruler according to the invention 3 is the straight line ruler according to any one of the inventions 1 to 2,
1 and 9, in the extended state as shown in FIGS. 1 and 9 , a linear ruler having a straight edge 7 approximately equal to the entire length in the longitudinal direction on the other 5 of both width edges.

  As described above, in the present invention, the extended state and the shortened state can be selected, and in each state, it is easy to design thinly providing the straight edges 6 and 24 that are approximately equal to the total length, but the extended state is approximately By making the shape narrower in the longitudinal direction, it is possible to handle a pen, knife, etc. with the other hand while securely holding the wide side with the fingertip of one hand, and the linear ruler 1 from the pen or knife. Considering the stress distribution due to the force applied to the linear ruler, it becomes easy to design the linear ruler 1 having high bending rigidity while minimizing the size of the linear ruler 1.

  In addition, in the invention 3, in addition to the effects of the present invention, the linear ruler 1 is more versatile and has high performance with respect to the difference in dominant hand in the extended state.

Diagram showing the extended state of the first embodiment in the trigonometric method A diagram showing the shortened state of the first embodiment in the trigonometric method The figure which represented the elongate part 2 of 1st Embodiment by the 3rd trigonometric method The figure which represented the elongate part 2 of another plan of 1st Embodiment by the 3rd trigonometric method The figure which represented the elongate part 3 of 1st Embodiment by the trigonometric method A diagram showing the shortened state of the first embodiment in the trigonometric method The figure showing the extension state of the conventional embodiment The figure showing the shortened state of the conventional embodiment The figure showing the extension state of a 2nd embodiment The figure showing the shortened state of 2nd Embodiment

A first embodiment of the present invention will be described with reference to FIGS.

The linear ruler 1 made of resin has an overall length of 31 centimeters in the extended state shown in FIG. 1, the width has been reduced from 3 centimeters to 2 centimeters, and the thickness has also been changed from 4 millimeters to 2 millimeters. Yes. In addition, chamfering is applied to one of the width edges of the surfaces 8 and 9, and the other 5 is made thin, and the straight edges 6 and 7 included therein are thinned to improve performance.
In the shortened state of FIGS. 2 and 6, the total length is 16 centimeters, the width changes from 3 centimeters to 2.5 centimeters, and the thickness also changes from 4 millimeters to 3 millimeters. .
Further, the long part 2 having a total length of 16 centimeters is provided with a groove 26 in the longitudinal direction so that the long part 3 is fitted on the back surface 10 as shown in FIG. 3, and the long part 3 as shown in FIG. Since the back surfaces 10 and 11 of the long portions 2 and 3 are located on the same plane in the shortened state in which the two are fitted, the straight edges 24 and 25 can be neatly aligned with the paper plane or the like even in the shortened state. It becomes possible.
Further, as shown in FIG. 5, the long portion 3 having a total length of 16 centimeters is provided with a connecting portion 29 at one end portion 14, and a columnar protrusion 20 protruding from the surface 9 of the connecting portion 29 is provided in addition to the long portion 2. By fitting the connecting portion 29 into the groove 26 at the same time as fitting into the hole 19 provided so as to penetrate the surface 8 from the groove 26 of the end portion 13, the elongated portions 2 and 3 are connected without play and are in an extended state. Become. Further, holes 16 to 18 are also penetrated from the groove 26 to the surface 8 of the long portion 2, and in the shortened state, cylindrical protrusions 20 to 23 that protrude from the surface 9 of the long portion 3 to the holes 16 to 19, respectively. Will fit. The protrusions 20 to 23 are sequentially arranged at intervals of about 5 centimeters, and also function as marks for every 5 centimeters when the scales for measuring the length are arranged at both width edges.

As an alternative of the first embodiment, a cylindrical iron piece is press-fitted and fixed in the holes 16 to 19 of the long portion 2, and the projections 20 to 23 of the long portion 3 are removed and a cylindrical magnet is embedded instead. The idea which connects the elongate parts 2 and 3 so that switching of an extended state and a shortened state is possible by the magnetic attraction force which acts between an iron piece and a magnet by putting is considered.
As an alternative, as shown in FIG. 4, claw shapes 27 and 28 are provided on both edges in the longitudinal direction of the groove 26 on the back surface 10 of the long portion 2, and the long portion 3 is hooked and connected. It would be fine. At this time, the holes 16 to 18 and the protrusions 21 to 23 are not necessary, and if the height of the protrusion 20 is kept low, the other end portion 15 of the long portion 3 is inserted from the one end portion 12 of the long portion 2 into the groove 26. It would be easy to slide and connect within. If it is such a slide structure, the groove | channel 26 may be covered so that the nail | claw shape 27 and 28 may be connected, and the elongate part 2 may be made into a cylinder shape.
As an alternative, the long portion 3 is also provided with a groove such as the groove 26 of the long portion 2, and a new long portion that fits into the groove is provided to form a three-stage structure. It may be a straight line ruler with a selectable length. Of course, it is easy for those skilled in the art to increase to a four-stage structure and a five-stage structure as well.

A second embodiment of the present invention will be described with reference to FIGS. 9 and 10.

In the extended state of FIG. 9 , the resin linear ruler 1 has an overall length of 32 centimeters, a width that has been reduced from 3 centimeters to 2 centimeters, and a thickness that has also been reduced from 4 millimeters to 2 millimeters. Yes. One 4 and the other 5 have straight edges 6 and 7, respectively.
In the shortened state of FIG. 10 , the total length is 17 centimeters, the width changes from 3 centimeters to 2.5 centimeters, and the thickness also changes from 4 millimeters to 3 millimeters.
Further, the back surface 10 of the elongated portion 2 of the full-length 17 cm and the groove 26 is provided in the longitudinal direction such that the elongated portion 3 is fitted, is fitted into the elongated portion 3 as shown in FIG. 10 In the shortened state, the back surface 10 and the front surface 9 of each of the long portions 2 and 3 are located on substantially the same plane, so that even in the shortened state, the straight edges 24 and 25 can be neatly aligned with the paper plane or the like.
Further, the long portion 3 having a total length of 16 centimeters is provided with a connecting portion 34 at one end portion 14, and the connecting portion 34 is long enough to swing around the swing axis 33 arranged in the width direction of the linear ruler 1. The other end 13 of the part 2 is supported.
In the extended state, the edge of the other end portion 13 of the long portion 2 and the edge of the one end portion 14 of the long portion 3 are in contact with each other.

1. Straight ruler 2,3. Long section 4,31. One 5,32. The other 6,7,24,25. Straight edge 8,9. Front 10,10.Back 12,14. One end 13 15. Other end 16, 17, 18, 19. Hole 20, 21, 22, 23. Protrusion 26. Groove 27, 28. Claw shape 29, 30, 34. Connection 33. Oscillating axis

Claims (3)

A linear ruler having an extended state and a shortened state,
The extended state in which the first and second elongated portions are connected in the longitudinal direction;
The shortened state in which the first and second long portions are overlapped in the thickness direction and are connected and arranged so that the longitudinal direction of the second elongated portion is close to the longitudinal direction of the first elongated portion;
Have
In the extended state, the width is approximately narrow in the longitudinal direction, and a straight edge approximately equal to the entire length in the longitudinal direction is provided on at least one of both width edges,
In the shortened state, at least one of both width edges has a straight edge approximately equal to the entire length in the longitudinal direction.
Straight line ruler. The extended state in which one end of the second elongated portion is connected to the other end of the first elongated portion;
The shortened state in which the direction from the one end of the first long portion to the other end matches the direction from the one end of the second long portion to the other end,
The linear ruler according to claim 1, comprising: The linear ruler according to any one of claims 1 to 2, further comprising a straight edge substantially equal to a total length in a longitudinal direction in the extended state on the other of both width edges.

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