JP3333402B2 - Dimension measurement method and dimension measuring instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimension measuring method and a dimension measuring instrument. More specifically, the present invention relates to a dimension measuring method capable of simply and easily measuring an accurate position of a measuring point using a laser beam, and a lightweight and compact dimension measuring method suitably used for the dimension measuring method. It is about a vessel.

[0002]

2. Description of the Related Art Conventionally, as one method for accurately measuring the actual dimensions of a space such as a room, a measurement method using a laser beam has been known. In this measuring method, for example, as shown in FIG. 8, a light projector (2) is arranged at a measurement point in a space (1), and the light projector (2) is arranged in the length and width directions of the space (1). To emit laser light. In the space (1), two rulers (5) are respectively placed on two adjacent wall surfaces (3).
It is arranged so as to face (4) and to have one end in contact with another adjacent two wall surfaces (6) and (7). The ruler (5) is irradiated with laser light, and the position of the bright line of the projected laser light is read from a scale portion and a character portion provided on the ruler (5).

[0003]

However, the measuring method shown in FIG. 8, for example, uses a laser beam with high linearity, so that the measuring accuracy is high and very effective. Therefore, this ruler (5) hindered the measurement work. That is, the ruler (5) is generally composed of a long rod-shaped unit of 20 mm square and 1 m long, and three of these are connected to form a total length of 3 units.
Used as m. Thus, the ruler (5) is inconvenient to carry because the ruler (5) has a length of 1 m even in one unit. In addition, when three units are connected, the ruler (5) becomes heavy and requires labor to move, and the ceiling height of the room is usually about 2400 mm.
To move the ruler (5) in the room, it is necessary to swing the ruler, but this swing is not easy. The ruler (5) is often applied to a wall or a ceiling, which reduces the efficiency of the measurement operation. In addition, since the swing of the ruler (5) is not easy even at 3 m, it is not practical to make the ruler (5) longer than this.
The measurement of the actual size was practically limited to 3 m.

In addition, since the ruler (5) is formed by connecting such units, there is a drawback that a connection error or disconnection during movement is apt to occur, and the connection state is easily reflected on the measurement accuracy. . The present invention has been made in view of the above circumstances, and eliminates the drawbacks in measuring the actual dimensions of a space such as a room using a conventional laser beam.
A dimension measurement method that can easily and easily measure the exact position of a measurement point using a laser beam, and is suitably used for this dimension measurement method, and is lightweight, compact, and can be used in construction and civil engineering work. It is intended to provide a dimension measuring device.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by providing a laser beam at a measuring point which is drawn out of a tape-shaped dimension measuring tool and provided with a scale portion and a character portion. A reflector having reflection characteristics is mounted, the reflection surface of the reflector is erected with respect to the surface of the shank, and a laser beam is emitted toward the reflection surface of the reflector, and the bright line position by the laser light appearing on the reflection surface is determined. A dimension measuring method is provided in which a dimension is measured by reading from a scale portion and a character portion of a scale portion (claim 1).

Further, according to the present invention, at a measuring point, a reflector having a laser beam reflection characteristic on a side surface of a main body portion of a tape measure dimension measuring tool, and a scale portion and a character portion provided on a reflection surface is mounted. Dimensions are obtained by irradiating a laser beam toward the reflecting surface of the reflector and reading a bright line position by the laser beam appearing on the reflecting surface from a scale portion and a character portion provided on the reflecting surface, and performing dimension measurement. It also provides a measuring method (claim 2).

Further, the present invention has a ruled portion which is housed in a main body so as to be freely wound and which can be pulled out from the front, and a scale portion and a character portion are attached to the ruled portion. A dimensional measuring device comprising a measuring tool and a reflector having a laser light reflection characteristic, wherein the reflector is capable of being mounted on a length section and a main body of the dimensional measuring tool, and at the time of mounting, There is also provided a dimension measuring device characterized in that the reflecting surface stands upright with respect to the surface of the ruler portion or is arranged on the side surface of the main body portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The dimension measuring method and the dimension measuring device according to the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

[0009]

FIG. 1 is a perspective view showing an embodiment of a dimension measuring method and a dimension measuring instrument according to the present invention. For example, this Figure 1
In the example shown in (1), when measuring the actual dimensions of a space such as a room, the main body (1) of the tape-shaped dimension measuring tool (11) is measured.
The rule (13) is pulled out from the front of 2), and its tip is placed in contact with a reference portion such as a wall that partitions a space. Further, a reflector (14) having a laser beam reflection characteristic is attached to the measuring section (13) in accordance with the measurement point, and the reflector (1) is mounted.
The reflecting surface (15) of 4) is arranged so as to be upright with respect to the surface of the scale portion (13) provided with scales and characters (not shown). Then, a laser beam (16) is applied to the reflection surface (15) of the reflector (14).

Then, since the reflector (14) has a property of reflecting the laser beam (16), an emission line (17) of the laser beam (16) appears on the reflection surface (15). The position of the bright line (17) is read from a scale portion and a character portion provided on the scale portion (13), and the dimension is measured. As described above, in the dimension measuring method of the present invention, the tape-shaped dimension measuring tool (11) is used, and when measuring the actual dimensions of a space such as a room, the measuring point has a laser beam reflection characteristic corresponding to the measurement point. The reflector (14) is attached to the scale (13) of the dimension measuring tool (11). Dimension measurement tool (1
1) and the reflector (14) are compact and lightweight by themselves, portable and convenient to carry. For this reason, measurement of the actual dimensions of a space such as a room using a laser beam is simple and easy. Moreover, the shaku (1
3) is long and does not require unit connection like the conventional ruler (5) shown in FIG. 8, and high measurement accuracy can be obtained.
There is no restriction on the length of the measuring section (13).

FIG. 2 is a perspective view showing another example of the dimension measuring method and the dimension measuring device of the present invention. The example shown in FIG. 2 shows a method for measuring the size of a rim such as a wall.
When the measurement point comes to the edge of the wall (18) or the like, the laser beam (16) is applied to the side surface of the main body (12) of the dimension measuring tool (11). Therefore, in such a case, as shown in FIG. 2, a reflector (14) having a laser beam reflection characteristic is tapered so as to correspond to a measurement point located at an edge of a wall (18) or the like. Is mounted on the side surface of the main body (12) of the dimension measuring tool (11). At this time, the reflector (1
The reflection surface (15) of 4) is disposed on the side surface of the main body (12) of the dimension measuring tool (11). The reflective surface (15) is provided with a scale portion and a character portion similar to those attached to the surface of the measuring portion (13) of the dimension measuring tool (11).

When the laser beam (16) is irradiated toward the reflecting surface (15) of the reflector (14), the laser beam (16)
(17) appears on the reflection surface (15). The position of the bright line (17) can be read from a scale portion and a character portion provided on the reflection surface (15). By adding the read size to the size read from the scale portion (13) of the dimension measuring tool (11), for example, as illustrated in FIG. ) To the measurement point are obtained.

As described above, even if the measurement point comes to the edge of the wall (18) or the like, the actual size of the space can be measured by the laser beam (16), and the measurement is simple and easy. Become. Further, as is apparent from FIG. 3, in the case of this dimension measuring method, the actual dimension of the wall-to-wall can be measured simply and easily. That is, the ruler section (13) is pulled out from the main body section (12) of the dimension measuring tool (11), and the tip thereof abuts on one wall (18), and the main body section (12) is opposed to the wall (18). ) Is brought into contact with the back surface, the length of the scale portion (13) is read, and the length of the reflector (14) indicated by the scale portion and the character portion is added to the length, thereby obtaining the actual distance between the walls (18). The length is measured.

Further, in this dimension measuring method, the floor surface (1
In addition to the measurement with the dimension measuring tool (11) arranged in 9), the dimension measurement in the air can be performed. This dimension measurement in the air is effective for measuring the actual dimensions of a space such as a room when there is an obstacle on the floor (19). This point is exactly the same in the case of the measuring method illustrated in FIG. 1, in which the reflector (14) is attached to the measuring portion (13) of the dimension measuring tool (11) to perform the dimension measurement.

For example, as shown in FIGS. 1 and 2, a dimension measuring device which can be used in the dimension measuring method exemplified above is housed in a main body (12) so as to be freely wound.
A dimension measuring tool (11) that can be withdrawn from the front and has a scale portion (13) provided with a scale portion and a character portion;
A reflector (14) having a laser beam reflection characteristic.

In the dimension measuring tool (11), for example, a stopper (20) can be provided at the upper part of the side face of the main body (12). It is possible to hold. Further, a scale portion and a character portion (not shown) provided on the surface of the scale portion (13) can be provided in accordance with the metric system. In some cases, it may conform to the shakukan method. The scale portion and the character portion can be printed in a color such as black or red on a base portion such as white. Of course, other colors may be used.

In such a dimension measuring tool (11), the measuring section (13) is made of metal, and is housed in the main body (12) so as to be freely wound, and is drawn out from the front of the main body (12). Is preferably applied. With the application of the convex, the size and weight can be held by one hand, portability is improved, and carrying is more convenient. In addition, the conventional ruler (5) shown in FIG. 8 was the most inexpensive, but the price was 81,000 yen for a commercial product, and it was very expensive. Can be reduced to about 1/15 to 1/20, and an inexpensive dimension measuring device can be realized.

The reflector (14) can be mounted on the scale (13) and the main body (12) of the dimension measuring tool (11). At the time of mounting, the reflector (14) is arranged such that the reflecting surface (15) stands upright with respect to the surface of the shank (13) in the measuring method shown in FIG. 1, and the measuring method shown in FIG. In the case of (1), it is arranged on the side surface of the main body (12).

The reflecting surface (15) is provided on at least one of the front and back surfaces of the reflector (14). As shown in FIG. 2, the reflective surface (15) can be provided with the same graduations and characters as those of the scale (13) of the dimension measuring tool (11). In order to facilitate reading of the position 17), the color of the base portion is a color that easily absorbs the laser light (16), and the color of the scale portion and the character portion is a color that is easy to reflect the laser light (16). be able to. Specifically, the colors of the scale portion and the character portion can be, for example, high brightness, white, or the like. It may be a fluorescent color. On the other hand, the color of the base portion can be, for example, black or dark blue, whose lightness is almost zero.
The coloring of these colors can be performed by coloring by painting, printing, or the like. For example, a color that reflects the laser light (16) is set as a base color of the reflection surface (15) of the reflector (14), and characters are printed with a color that absorbs the laser light (16). Light (16)
Can be colored by an appropriate method such as printing a graduation portion and a character portion using a color absorbing light as a base color and using a reflected color thereon.

Such a reflector (14) is a member separate from the dimension measuring tool (11), and can be individually carried and carried, and the reflector (14) can be dimensionally measured. Since the device (11) can be stored in the main body (12), portability as a dimension measuring device can be further improved. In this case, when the reflector (14) is stored, it can be stored, for example, at the bottom of the side surface of the dimension measuring tool (11) as illustrated in FIG. If the length of the reflector (14) is made substantially equal to the length of the side surface of the main body (12) of the dimension measuring tool (11), the storage time is reduced when measuring the dimensions at the edge of the wall (18) or the like. The reflector (14) is also used for mounting, and the convenience of the measurement operation is further increased.

The reflector (14) can be, for example, a flat member shown in FIG. Then, as illustrated in FIG. 2, when the flat reflector (14) is stored, it is stored in the bottom of the side surface of the main body (12) of the dimension measuring tool (11) so as to be placed on the wall (18). Along with the side portion of the main body portion (12) of the dimension measuring tool (11) and the ruled portion (13), it is possible to measure the dimensions of the portion and to facilitate the mounting on the ruled portion (13). They can be slidable in their length direction. In this case, it is possible to attach the measuring section (13) to an arbitrary position.

As shown in FIG. 5, one end of the plate-like reflector (14) is drawn out of a scale (13) at the bottom of the side surface of the main body (12) of the dimension measuring section (11). It is also possible to attach to a shaft on the side edge and to be rotatable about this. That is, in the example shown in FIG. 5, as shown in FIG.
It can be turned 180 ° to the drawer side of the main body (12) of 1). This rotatable reflector (1)
4) When mounting the shank (13), the reflector (14)
Is turned 180 °, and the reflective surface (1
5) Close the lower end.

In the case of such a plate-like reflector (14), not only one but also two members are provided, and the mounting of the dimension measuring tool (11) on the shank (13) can be performed on either side. Can be performed easily and easily from the side.
FIG. 6 is a perspective view showing another example of the dimension measuring device. In the example shown in FIG. 6, the reflector (14) is formed as a member having a substantially L-shaped cross section.

That is, the reflector (14) has a flat base (21), and a reflecting surface (22) having a reflecting surface (15) stands upright from one side edge of the base (21).
The reflector (14) is housed in the bottom of the main body (12) of the dimension measuring tool (11). When this storage is done on the wall (1
8) The reflection surface (22) of the reflector (14) can be provided with a reflection surface (15) on both front and back surfaces so as to be mounted when the reflector (14) is attached in the measurement of the dimension of the edge portion such as 8).

In the case of a dimension measuring device provided with such a reflector (14), as described above, the reflector (14) is connected to the side portion and the length of the main body (12) of the dimension measuring tool (11). In addition to being able to slide in their lengthwise direction along the section (13), the length section (13) of the dimension measuring tool (11)
And the main body (12). When the reflector (14) is attached to the measuring portion (13), the base portion (21) is brought into close contact with the back surface of the measuring portion (13) regardless of whether the reflector is slidable or detachable. Thereby, when the reflector (14) is mounted, the reflection surface (15) provided on the reflection surface portion (15) is arranged upright with respect to the surface of the scale portion (13).

As shown in FIG. 7, the reflector (14) having a substantially L-shaped cross section has a reflection surface (2) as shown in FIG.
At the side edge of the base (21) opposite to the side 2), a flat holding piece (23) can be vertically installed facing the reflection surface (22), and the holding piece (23) increases the independence. Can be enhanced. For example, in the dimension measuring device exemplified above, when a convex having a metal measuring portion (13) is applied to the dimension measuring tool (11), the reflector (14) is magnetized. Can be. Specifically, for example, a part or the whole of the reflector (14) is magnetized. As the material of the reflector (14) in this case, stainless steel, titanium steel or the like is preferably exemplified. Alternatively, the reflector (1
By providing a magnet in a portion 4) which is brought into close contact with the scale portion (12), the reflector (14) may be magnetized. In any case, the reflector (14) adheres to the scale (13) by magnetic force, and the reflector (14) can be fixed easily and easily.

Then, regarding the dimension measuring tool (11),
The same color as that of the reflector (14) can be selected for the base portion, the scale portion, and the character portion of the scale portion (13). That is, the color of the scale portion and the character portion is a color such as white or fluorescent color that easily reflects the laser light (16), and the color of the base portion is a color such as black or dark blue color that easily absorbs the laser light (16). Can be used. By doing so, even if the space such as a room is dim in order to enhance the visibility of the laser beam (16), the laser beam (1) is reflected by the reflector (14).
Since 6) is reflected, the position of the bright line (17) can be reliably read by the scale (13).

Of course, the present invention is not limited by the above examples. The main body and the scale of the dimension measuring tool,
It goes without saying that various aspects are possible for details such as the configuration, structure, and material of the reflector.

[0029]

As described above in detail, according to the present invention, a dimension measuring instrument used for measuring an accurate position of a measuring point by using a laser beam can be made lightweight and compact. The work of measuring the actual dimensions of a space such as a room in construction and civil engineering work can be made simple and easy, and work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a dimension measuring method and a dimension measuring instrument according to the present invention.

FIG. 2 is a perspective view showing another example of the dimension measuring method and the dimension measuring device of the present invention.

FIG. 3 is a side view of the dimension measuring method illustrated in FIG. 2;

FIG. 4 is a perspective view showing an example of a reflector.

FIG. 5 is a perspective view showing another example of the dimension measuring device of the present invention.

FIG. 6 is a perspective view showing another example of the dimension measuring device of the present invention.

FIG. 7 is a perspective view showing another example of the reflector in the example shown in FIG. 6;

FIG. 8 is a plan view schematically showing a conventional method for measuring the actual size of a space using a laser beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Dimension measuring tool 12 Main body part 13 Measure part 14 Reflector 15 Reflection surface 16 Laser beam 17 Bright line 18 Wall 19 Floor surface 20 Stopper 21 Base 22 Reflection surface part 23 Holding piece

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01B 3/10-3/10 101 G01C 15/00-15/14

Claims (13)

(57) [Claims] At a measuring point, a reflector having a laser light reflection characteristic is attached to a measuring portion which is drawn out from a tape-shaped dimension measuring tool and provided with a scale portion and a character portion, and the reflecting surface is formed on the measuring portion surface. Upright, irradiate laser light toward the reflection surface of this reflector, read the position of the bright line by the laser light appearing on the reflection surface from the scale portion and the character portion of the scale, and perform dimension measurement. Characteristic dimension measurement method. 2. At a measuring point, a reflector having a laser beam reflection characteristic on a side surface of a main body portion of a tape measure dimension measuring tool, and a scale portion and a character portion attached to a reflection surface is attached. A dimension measuring method comprising: irradiating a laser beam toward a reflecting surface; reading a bright line position by the laser beam appearing on the reflecting surface from a scale portion and a character portion provided on the reflecting surface; and performing dimension measurement. 3. A dimension measuring tool which is housed in a main body so as to be freely taken up and which can be pulled out from the front, wherein the scale has a scale and a character, and a laser. And a reflector having a light reflection characteristic, the reflector being capable of being mounted on a scale portion and a main body portion of the dimension measuring tool, and having a reflective surface having a scale when mounted. A dimension measuring device characterized in that it is arranged upright with respect to the surface of the part or disposed on a side surface of the body part. 4. The dimension measuring device according to claim 3, wherein the reflector is housed in a main body of the dimension measuring tool. 5. The dimension measuring instrument according to claim 4, wherein the reflector is slidable in the length direction of the dimension measuring tool along the side face portion and the measuring portion of the main body. 6. The reflector according to claim 4, wherein one end of the reflector is axially attached to an edge of the bottom of the side surface of the main body of the dimension measuring tool on the side where the scale is drawn out, and is rotatable about this. Dimension measuring device. 7. The dimension measuring instrument according to claim 4, wherein the reflector is detachably attached to the length section and the main body of the dimension measuring tool. 8. A scale portion and a character portion are provided on the reflecting surface of the reflector, and the color of the scale portion and the character portion is a color that easily reflects laser light, and the color of the other surface base portion is laser light. The dimension measuring device according to any one of claims 3 to 7, wherein the color measuring device has a color that easily absorbs light. 9. The scale portion has a scale portion and a character portion that have a color that readily reflects laser light, and other surface base portions have a color that easily absorbs the laser light.
9. The dimension measuring device according to any one of claims 1 to 8. 10. The reflector has a flat plate shape.
10. The dimension measuring device according to any one of claims 9 to 9. 11. A reflector having a substantially L-shaped cross section in which a flat reflecting surface portion stands upright from one side edge of a flat base portion. The dimension measuring device according to any one of claims 3, 4, 5, 7, 8, and 9, wherein 12. The dimension measuring device according to claim 11, wherein a flat holding piece is vertically provided on a side edge of the base portion opposite to the reflection surface portion, and the holding piece is arranged to face the reflection surface portion. 13. The dimension measuring device is a convex, the reflector is magnetized, and the scale portion is a metal member capable of attaching the reflector by magnetic force.
A dimension measuring device according to any of the above.