JPH11148824A - Squar ruler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately measure rectangular position with a small and easily portable device by fitting a base stage in parallel to the longitudinal direction of an object to rule the rectangular direction with a fitting piece and emitting laser light from a laser source mounted on the base stage. SOLUTION: At both ends of a bend piece 20A constituting a fitting piece 24A of a base stage 20, an insulation piece 25A is mounted and the base stage 20 is fitted to an object 30 so that the axis line in the longitudinal direction of the base stage 20 becomes parallel to the longitudinal direction of the object 30 to rule the rectangular direction. With the screwing degree of an adjustment screw 27 and a level 29, the longitudinal direction of the base stage 20 is horizontally adjusted. A laser light is radiated from a laser source 21 mounted on the base stage 20 to the direction perpendicular to the longitudinal direction. With the scale on a scale plate mounted on the outer surface (irradiation side) of a bend piece 20A, the shift quantity of the laser light irradiation point from the reference position marked on the emission side object 30 is measured. By this device, the reaching range of laser light becomes large so that rectangular shape is ruled by large distance and accuracy becomes high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a right angle ruler used to know a direction perpendicular to the longitudinal direction of various members such as rails of a railway line or columns and beams in a structure such as a building or civil engineering structure. .

[0002]

2. Description of the Related Art Conventionally, in the construction industry or the civil engineering industry, for example, an L-shaped right angle ruler called "Kane scale" or a large right angle ruler made of wood or the like is used as a reference for a right angle portion. Also, in the field of railways, when laying and maintaining railway tracks, it is often desirable to check the direction perpendicular to the longitudinal direction of the rails. As an example, for example, railroad sleepers are in principle arranged at right angles to the rails.
In addition, the positions of the joints of the left and right rails are basically arranged at relative positions except for special cases such as a sharp curve.

[0003] For this purpose, a track square ruler 10 as shown in FIG. 12 is conventionally used as an instrument for knowing the direction perpendicular to the rail. The right angle ruler 10 for a track includes an engaging side member 11 to be engaged with one of the rails, and a main member 12 projecting from the engaging side member 11 at right angles to the right and left rails. It is used to measure whether the angle between the sleeper and the rail is a right angle, or whether the difference between the rail joints is within an allowable value range or not.

[0004]

The shape L ₁ × L ₂ of the conventional square ruler for a track is as large as 50 cm × 136 cm for a conventional line, and 120 cm × 165 cm for a Shinkansen. Walking is a heavy burden. SUMMARY OF THE INVENTION It is an object of the present invention to provide a right angle ruler which has a small shape, is easy to carry, and can accurately measure a right angle position.

[0005]

According to a first aspect of the present invention, a first engaging piece for engaging an object whose right angle direction is to be defined in parallel with the longitudinal direction thereof is provided.
And a laser light source mounted on the first base and emitting a laser beam in a direction perpendicular to a line connecting the first engagement pieces, and a laser light source provided at an emission portion of the laser light source. A right angle ruler is constituted by position display means for displaying a right angle position on light.

According to a second aspect of the present invention, a second base is provided above the first base so that either the first base or the second base can be engaged in parallel with an object. The present invention proposes a right angle ruler configured to be able to determine whether or not there is a shift in a mounting position of a laser light source by reversing a supporting surface of the laser light source. In claim 3 of the present invention, claim 1
Alternatively, in any of the right angle rulers described in 2 above, an adjusting screw screwed to both ends of the first base in a vertical direction and a level indicating an inclination in a direction parallel to a line connecting the engagement pieces are provided. The present invention proposes a right angle ruler that can set the mounting posture of the base to a horizontal posture by using the adjusting screw.

According to the right angle ruler of the present invention, there is no need for a member to be inserted between the rails, and the base that engages in a posture parallel to the object whose right angle direction is to be defined determines the general shape, and is small. Can be made. Moreover, since the position in the perpendicular direction is designated by the laser beam, the position in the perpendicular direction can be accurately measured. Further, according to the square ruler proposed in claim 2 of the present invention, since the support surface of the laser light source can be turned over and engaged with the object, the deviation of the mounting position of the laser light source can be maintained even during practical use. Can be inspected. Therefore, the displacement of the mounting position of the laser light source can be easily inspected, so that the inconvenience of measuring in a state where the mounting position is displaced can be avoided.

Further, according to the right angle ruler proposed in claim 3 of the present invention, the mounting posture with respect to an object such as a rail can be set in a horizontal state. As a result, it is possible to eliminate a measurement error that occurs when the measurement is performed in the inclined posture, and in this respect, there is also obtained an advantage that the measurement accuracy can be improved.

[0009]

1 to 4 show an embodiment of a right angle ruler according to the present invention. In the figure, reference numeral 20 denotes a first base. The first base 20 is formed of a rectangular metal plate,
A laser light source 21 is mounted on the upper surface side in a direction orthogonal to the longitudinal direction of the base 20. Reference numeral 22 denotes a storage box for a battery that supplies power to the laser light source 21. A power switch 23 is attached to the battery storage box 22. By turning on and off the power switch 23, the laser light source 21 is controlled to be turned on and off.

On the back side of the first base 20, a first base 20 is provided.
A first engagement piece 24 </ b> A for engaging the longitudinal axis of the object 30 in a position parallel to the longitudinal direction of the object 30 is protruded.
In the example of the figure, a plate constituting the first base 20 as the first base 20 and a bent piece 2 formed by bending the plate into an L shape
The case where an extruded aluminum material having 0A is used is shown.
The first engagement piece 24A is an L-shaped bent piece 2
0A, an insulating piece 25A is adhered to the inside of the insulating piece 25A.
A case where a first engagement piece 24A is constituted by A and a bent piece 20A is shown. The insulating pieces 25A are attached to both ends of the bent piece 20A (both ends in the longitudinal direction of the first base 20), and are engaged with the object 30 at two points in the longitudinal direction of the first base 20. At the same time, insulating strips 25B and 25C are attached to both ends of the back surface of the first base 20, respectively.
5C, the first base 20 is insulated and engaged with the object 30 and is configured to contact the object 30 at three points A, B, and C as shown in FIG. ing.

On the outer surface of the bent piece 20A, a scale plate ME (see FIGS. 2 and 3) centered on the emission position of the laser beam.
Is mounted on the scale plate ME so that the amount of deviation between the position irradiated with the laser beam and the reference position marked on the object 30 on the side where the laser beam is emitted can be measured. A second base 26 is provided on the upper surface side of the first base 20. The second base 26 is formed from the plate surface of the first base 20 with the laser light source 21 and the battery storage box 22 and an adjustment screw 2 described later.
The insulating pieces 25B and 25C are arranged at positions higher than the protrusion amount such as 7. In the example shown in FIG.
And an insulating piece 25 attached to the upper surface of the metal block 28.
B and 25C show a case where the second base 26 is formed.

[0012] The second engagement piece 24 with respect to the second base 26.
B is provided. The second engagement piece 24B is a metal bent piece 2
0B and an insulating piece 25A attached to the inner surface of the bent piece 20B. The second base 26 allows the laser light source 21 to be turned over and engaged with the object 30 as shown in FIG.

The adjusting screw 27 is screwed in a vertical direction with respect to the first base 20, and the leading end of the adjusting screw 27 is adjusted according to the screwing amount.
The first base 20 is provided for adjusting the first base 20 so that its longitudinal position can be set to a horizontal position. Reference numeral 29 denotes a level for setting the horizontal attitude. At the emission end of the laser light source 21, a position display means 21A for indicating a position perpendicular to the axis of the object 30 is provided. As the position display means 21A, for example, as shown in FIG. 5, a laser beam is passed through a cylindrical lens CDL, the laser beam is diffused linearly by the cylindrical lens CDL, and a display line LIN (see FIG. 1) drawn by the laser beam. This shows a case in which a right angle position is displayed. FIG. 5 shows a case where all of the laser light is transmitted through the cylindrical lens CDL. However, as shown in FIG. 6, about half of the laser light is transmitted through the cylindrical lens CDL, and the other part is directly irradiated on the target. You may comprise. With this configuration, half of the laser beam is diffused linearly and the other goes straight, so that the display line LI is shown in FIG.
The center of the laser beam is displayed as a spot SP in N. Therefore, even in a relatively bright place, the spot SP
Can confirm the display position.

As described above, according to the embodiment shown in FIGS. 1 to 4, a laser beam is irradiated in a right angle direction, and a position of the object 30 which is bent in a right angle direction from a specific position of the object 30 is irradiated by the laser light irradiation point. Since it is specified, a large rectangular shape can be defined by the relationship between the reaching distance of the laser beam from the object 30. Therefore, since the right angle is defined by a large distance,
The advantage that the precision can be improved is obtained.

Although the right angle can be defined between large distances, the shape of the device can be reduced to the shape of the first base 20. Therefore, the whole shape can be small. Therefore, it is possible to provide a small and lightweight right angle ruler with high measurement accuracy. Further, in the above-described embodiment, the adjusting screw 27 is provided.
The first base 20 can be set to a horizontal posture even when engaged with the inclined object 30 because the structure is such that the inclination in the longitudinal direction of the base 20 can be set to a horizontal posture. There is an advantage that the display line LIN can be displayed vertically.

FIGS. 8 to 11 show another embodiment of the present invention. In this embodiment, the laser light source 21 is connected to the first base 20.
2 shows a case where the camera is mounted on the outside of the second base 26. That is, as shown in FIG. 8, the first base 20 and the second base 26 can be made of an extruded aluminum material having an L-shaped cross section. The plate surfaces of the first base 20 and the second base 26 are brought into contact with each other and connected to each other, an insulating piece 25A is attached to each of the bent pieces 20A and 20B, and the first engagement piece 24A and the second Of the engagement piece 24B.

A magnet chuck 40 is mounted on the first base 20 and the second base 26,
Magnetically attracts the object 30. Notches are provided in both the first base 20 and the second base 26, and the battery storage box 22 is stored in the notch. That is, the battery storage box 22 is stored in the cutout portion, so that the projecting amount of the battery storage box 22 is reduced, and the battery storage box 22 is stored within the height range of the magnet chuck 40. .

A shelf plate 41 is projected from the outer surface of the bent piece 20A, and a laser light source support plate 42 is rotatably mounted on the shelf plate 41 so that the rotation posture of the laser light source 21 can be adjusted. This embodiment shows a case where the adjusting screw 27 used in the embodiment shown in FIGS. 1 to 4 is omitted. That is, the laser light source support plate 42 is rotatably mounted on the shelf plate 41 by the shaft 43 at one end thereof. A spring 43 and an adjusting screw 44 are provided on the other end side. The adjusting screw 44 is engaged with the laser light source support plate 42 through a through hole, and is screwed into the shelf plate 41 with a screw hole.
The spring 43 applies a repulsive force between the shelf plate 41 and the laser light source support plate 42, and rotates the adjusting screw 44 to rotate the posture of the laser light source 21 along a circle around the axis 43. The configuration is such that the direction of the display line LIN displayed by the laser beam can be finely adjusted to the vertical posture.

Reference numeral 45 denotes an insulating material. The first base 20 and the second base 26 are insulated and separated in the longitudinal direction by the insulating material 45, so that the first base 20 and the second base 26 are insulated even when the magnet chuck 40 directly contacts the object 30. A case is shown in which the base 26 prevents the magnet chucks 40 from being electrically seated between each other. That is, when the object 30 is a rail for a railway, the signal circuit is prevented from malfunctioning even when the signal circuit is engaged with a portion where the signal circuit is separated at a joint of the rail.

[0020]

As described above, according to the present invention, the mounting posture of the laser light source 21 can be adjusted by the pair of first engaging pieces 24.
A and the laser light source are arranged such that the optical axis of the laser light is perpendicular to the line connecting the pair A and the line connecting the pair of second engagement pieces 24B to each other and the direction in which the laser light is perpendicular. 21 is mounted, the object 30 is engaged with the first engagement piece 24A to cause the laser light source 21 to emit light, so that the laser light is irradiated in a right angle direction, and the right angle position is changed according to the irradiation position of the laser light. Can be displayed.

Therefore, when the present invention is applied to a rail for a railway, a right-angle position passing through a specific position of one of the rails is displayed on the other of the rails without a member extending between one of the rails and the other. Can be. Therefore, for example, it is possible to inspect whether the sleeper is installed at right angles to the rail, whether the rail joints are aligned, and the like.

Here, in particular, the first base 20 and the second base 26 can be formed to have a dimension in the longitudinal direction of, for example, less than 30 cm and a dimension in the short-side direction of less than 8 cm.
In addition, since it can be made light in weight, there is an advantage that it is easy to carry. In the present invention, the laser light source 2
A first base 20 and a second base 26 thereof are provided on the front and back sides of the base plate 1 so that the first base 20 and the second base 26 can be engaged with an object. From the state where the first base 20 is engaged with the object 30 and the second base 26
When the irradiation position of the laser light is changed in a state where is engaged with the object 30, it can be understood that the direction of the laser light source 21 is out of order. Therefore, by adjusting the position of the laser light source 21 so that the same position is displayed on the front and back sides, the mounting position of the laser light source 21 can be easily set to the correct position. Therefore, there is an advantage that the position of the laser light source can be calibrated to a correct position without using an expensive calibration tool.

Further, in the present invention, the position is displayed by diffusing the laser light linearly, so that the advantage that the display is easy to see is obtained. Further, when the laser beam is transmitted through about half of the cylindrical lens CDL and the other half is made to go straight, the spot SP is displayed in addition to the linear display line LIN. Is easy to find, and an advantage that a convenient square ruler can be provided is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment shown in FIG.

FIG. 3 is a rear view of the embodiment shown in FIG. 1;

FIG. 4 is a side view of the embodiment shown in FIG. 1;

FIG. 5 is a view for explaining an example of a position display means used in the embodiment shown in FIG. 1;

FIG. 6 is a view for explaining another example of the position display means used in the embodiment shown in FIG. 1;

FIG. 7 is a view showing an example of a display displayed by the position display means shown in FIG. 6;

FIG. 8 is a side view for explaining a modified embodiment of the present invention.

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a plan view of FIG. 8;

FIG. 11 is a rear view of FIG. 8;

FIG. 12 is a perspective view for explaining a conventional technique.

Claims (3)

[Claims] 1. A. First Embodiment B. a first base having a first engagement piece for engaging in parallel with the longitudinal direction of the object whose perpendicular direction is to be defined; B. a laser light source mounted on the first base and emitting laser light in a direction perpendicular to a line connecting the first engagement pieces; A right angle ruler provided at an emission portion of the laser light source and configured to display a right angle position on the laser light. 2. The right angle ruler according to claim 1, further comprising a second base provided on an upper surface side of said first base.
By engaging the base and the second base with the object, the support surface of the laser light source is turned upside down so that it can be determined whether or not the mounting position of the laser light source is displaced. A right angle ruler characterized in that it is constructed as follows. 3. The right angle ruler according to claim 1, wherein an adjusting screw screwed in a vertical direction on both ends of the first base, and a longitudinal inclination of the first base. And a level that displays the position of the first base, and the mounting posture of the first base can be set to a horizontal posture by the adjusting screw.