JP3242189U - laser rangefinder target plate - Google Patents

Abstract

A target plate for a laser range finder that can smoothly change its posture during use and during carrying in a short period of time. SOLUTION: A body plate 11 and a swing plate 13 pivotally attached to an intermediate portion of the body plate 11 by a hinge 16 are provided, and the swing plate 13 is orthogonal to a target surface of the body plate 11. It is configured to be able to take an alignment posture and a retracted posture overlapping the body plate 11, and measures two intersecting planes formed by the swing plate 13 and the body plate 11 in the alignment posture. Positioning is performed by aligning the corners of the object with two intersecting planes and bringing them into contact with each other. [Selection drawing] Fig. 2

Description

The present invention relates to the technology of a laser rangefinder target plate that reflects laser light emitted from the laser rangefinder.

A target plate may be used when measuring distance using a laser rangefinder. For example, Patent Literature 1 proposes a target plate composed of two parts orthogonal to each other. According to the target plate described in Patent Literature 1, the target plate can be installed upright on a block or a fence, so that there is an effect that the measurement can be performed by one person.

By the way, there are cases where it is desired to measure the horizontal length of the wall surface of a building using a laser rangefinder. In this case, it is necessary to align the reflective surface of the target plate with the corner of the wall surface. However, although the target plate of Patent Document 1 consists of two portions bent at 90 degrees, it does not have the function of being aligned with the corner portion of the wall.

The target plate 70 shown in FIG. 9 is conventionally commercially available. This conventional target plate 70 is constructed by combining a plate 71 and a plate 72 and aligns any of four corners 73, 74, 75, 76 with the corners of the wall of the building. be able to. In this state, the horizontal length of the wall surface of the building can be measured by irradiating the plate surface protruding from the wall surface with a laser beam.

However, since the conventional target plate 70 shown in FIG. 9 is bulky in use, it is necessary to take the disassembled posture shown in FIG. 10 when carrying it. Slits 81 and 82 each having a width corresponding to the plate thickness are cut in the plate 71 and the plate 72 to the center of the width. The slits 81 and 82 can be assembled or disassembled by inserting or extracting the slits 81 and 82 facing each other.

Utility Model Registration No. 3170972

However, it is very troublesome to assemble and disassemble each time measurement is performed. Therefore, the present invention proposes a target plate for a laser range finder that can change the attitude during use and during carrying in a short period of time.

A target plate for a laser rangefinder according to a first invention is a target plate for a laser rangefinder that reflects laser light emitted from the laser rangefinder, and comprises a body plate having a target surface and a hinge attached to the body plate. a rocker plate pivotally mounted by the body plate, the rocker plate configured to assume an aligned orientation perpendicular to the target plane of the body plate and a retracted orientation overlapping the body plate; aligning two intersecting planes formed by the rocking plate and the body plate in the alignment posture by aligning and contacting two intersecting planes of the corner portion of the object to be measured. Characterized by

The target plate of the laser range finder according to the first idea can be aligned with the corner of the wall surface of the building by setting the swing plate in the alignment posture perpendicular to the target surface of the body plate. Also, when the swing plate is in the positioning posture, the target plate can be installed in a posture standing on the ground.
In particular, the target plate of the laser range finder according to the first idea can be put into a retracted posture in which the swing plate overlaps the body plate simply by swinging. Therefore, it is possible to change the posture during use and during carrying in a short time.

The target plate of the laser range finder according to the second invention comprises an extension plate pivotally attached to the end of the body plate by a hinge, and the extension plate has an extended posture connected to the body plate and a position connected to the body plate. and a retracted position that overlap each other, and a single plane formed by the expansion plate and the body plate in the expanded position is used as the target plane.

In the target plate of the laser range finder according to the second invention, the reflecting surface can be enlarged by setting the extension plate in an extended posture connected to the body plate. As a result, it is possible to avoid obstacles in the path of the laser beam and perform measurement.
In particular, the target plate of the laser range finder according to the second invention can be put into a retracted posture in which the extension plate overlaps the body plate simply by swinging. Therefore, it is possible to change the posture during use and during carrying in a short time.

According to the present invention, it is possible to provide a target plate for a laser range finder that can smoothly change its posture during use and during carrying in a short period of time, and that can enlarge the reflecting surface as necessary.

It is a figure explaining an example of the laser range finder used for distance measurement. 1 is a perspective view of a target plate according to a first embodiment; FIG. FIG. 3 is a diagram showing a retracted attitude of the target plate shown in FIG. 2; FIG. 4 is a bird's-eye view illustrating a state in which the horizontal length of the wall surface of a building is measured using the target plate according to the embodiment; 5 is a bird's-eye view of the target plate shown in FIG. 4 as seen from the laser rangefinder side; FIG. FIG. 10 is a detailed view of a main part of a target plate according to a second embodiment; FIG. 11 is a functional explanatory diagram of a target plate according to the second embodiment; Fig. 10 is an enlarged perspective view of a hinge; It is a target plate that is commercially available conventionally. FIG. 2 is an exploded view of a conventional commercially available target plate;

(First embodiment)
FIG. 1 is a diagram illustrating an example of a laser range finder 1 used for distance measurement. The laser rangefinder 1 has a rectangular parallelepiped shape elongated in the front-rear direction, and emits a laser beam 3 from a front end portion 2 . Operation switches 5 for various operations are arranged on the top surface 4 , and a liquid crystal screen 6 for displaying the measured distance and the like is provided on the top surface 4 .
As shown in FIG. 1, when there are arrows indicating directions in the figure, directions such as front-rear, left-right, up-down, etc. in the figure will be explained with reference to the drawing. The same applies to subsequent drawings.

FIG. 2 is a perspective view of the target plate 10 according to the first embodiment of the invention. The target plate 10 includes a swing plate 13 that is pivotally attached by two hinges 12 to the left side of the body plate 11 in the left-right direction. For the hinge 12, a common commercially available metal product configured to be able to swing about an axis can be used. For the body plate 11, a resin plate or the like can be used as a plate that reflects the laser light. A plate made of the same material as that of the body plate 11 may be used for the swing plate 13 .

An angle member 14 having two 90-degree cross-sections is attached to the body plate 11 at the intermediate portion of the two hinges 12 . The angle member 14 restricts the swinging angle of the swinging plate 13 with respect to the body plate 11 to 90 degrees. Thereby, as shown in FIG. 2, the rocking plate 13 is configured to be able to take an alignment posture perpendicular to the main body plate 11 .

An extension plate 17 is pivotally attached to the right end portion 15 of the body plate 11 by a hinge 16 . A wide resin tape or the like can be used for the hinge 16 . For the extension plate 17, like the body plate 11, a resin plate or the like that reflects laser light is used.

Fixtures 21 and 21 are attached to the upper and lower portions of the connecting portion 20 between the body plate 11 and the extension plate 17 . The fixture 21 is a resin part that is elongated to the left and right of the U-shaped cross section. By simultaneously fitting the fixture 21 to the body plate 11 and the extension plate 17 , the extension posture in which the extension plate 17 is connected to the body plate 11 is taken. The fixture 21 elastically sandwiches the main body plate 11 and the expansion plate 17, and maintains the state shown in FIG.

A single plane formed by the extension plate 17 and the body plate 11 in the extension posture shown in FIG. A target mark 22 is drawn on the target surface 23 .
Note that the target mark 22 shown in FIG. 2 is an example, and various target marks can be drawn according to the purpose of use.

FIG. 3 is a diagram showing the retracted posture of the target plate 10 shown in FIG. The rocking plate 13 is rotated around the hinge 12 so as to be in a retracted posture in which it overlaps the body plate 11 . The expansion plate 17 is in a retracted posture in which the fixtures 21 and 21 are shifted to the vicinity of the swing plate 13 and then rotated around the hinge 16 so as to overlap the body plate 11 .

The attitude change between the use attitude shown in FIG. 2 and the retracted attitude shown in FIG. 3 is performed only by rotating the swing plate 13 about the hinge 12 and rotating the expansion plate 17 about the hinge 16 as described above. be able to. Therefore, the target plate 10 according to the present invention can be smoothly changed in a short period of time between its posture during use and during carrying.

A method of using the target plate 10 according to the embodiment, the configuration of which has been described so far, will be described.

FIG. 4 is a bird's-eye view explaining a state in which the horizontal length of the wall surface 31 of the building 30 is measured using the target plate 10 according to the embodiment. That is, the laser rangefinder 1 (see FIG. 1) is used to measure the distance from the corner 32 of the building 30 on the laser rangefinder 1 side to the corner 33 on the target plate 10 side. 5 is a bird's-eye view of the target plate 10 shown in FIG. 4 viewed from the laser rangefinder 1 side.

In the measurement work, the swing plate 13 (see FIG. 2) of the target plate 10 is in the positioning posture. The two intersecting planes formed by the rocking plate 13 and the main body plate 11 in the alignment posture are brought into contact with the two intersecting planes of the corner portion 33 of the building 30, which is the object to be measured, with the corners thereof aligned to obtain the target point. are aligned. At this time, as shown in FIG. 5, the target surface 23 is aligned with the corner portion 33 of the building 30 so that the target mark 22 can be irradiated with the laser beam.

As shown in FIG. 4, the target plate 10 can be held at the corner portion 33 by interposing a telescopic support rod 34 between the rear surface 36 of the target plate 10 and the ground 35 . The back surface 36 of the target plate 10 is provided with two parallel projections 37 for engaging the buckling bars 34 . This eliminates the need to manually press the target plate 10 against the corner portion 33, thereby saving labor.

As described above, according to the target plate 10 according to the embodiment, by setting the swing plate 13 to the alignment posture orthogonal to the main body plate 11 , the target plate 10 can be aligned with the corner portion 33 of the wall surface of the building 30 . can be done. In addition, the target plate 10 can expand the reflecting surface by setting the extension plate 17 in an extension posture that is continuous with the main body plate 11 . As a result, it is possible to avoid obstacles such as rain gutters in the path of the laser beam for measurement.

(Second embodiment)
FIG. 6(a) is a detailed view of the main part of the target plate 40 according to the second embodiment. The target plate 40 according to the second embodiment differs from the target plate 10 according to the first embodiment (see FIG. 3) only in the structure of the main body plate 11 indicated by arrow A. As shown in FIG. The configuration of the target plate 40 according to the second embodiment will be described below, focusing on the differences.

As shown in FIG. 6A, in the second embodiment, the body plate 11 of the first embodiment is divided into a first plate 41 and a second plate 42. As shown in FIG. The first plate 41 and the second plate 42 are rotatably connected by a hinge 43 at the position of the rotation center 18 of the hinge 12 of the swing plate 13 .

FIG. 8 is an enlarged perspective view of the hinge 43. FIG. The hinge 43 incorporates a mechanism for generating friction in the bearing portion 44 that oscillatably connects the first member 45 and the second member 46 . With this mechanism, the hinge 43 maintains the opening angle at that time by the first member 45 and the second member 46 until a predetermined torque or more is applied.

FIG. 6(b) is a diagram illustrating a state in which the target plate 40 according to the second embodiment is aligned by contacting the right-angled corner portion 33 of the building 30. FIG. It is a figure corresponding to an arrow view. Since the angle of the corner portion 33 is 90 degrees, the first plate 41 and the second plate 42 are on the same plane, and the angle of the hinge 43 does not move. At this time, the rocking plate 13 is rotated 90 degrees around the hinge 12 with respect to the first plate 41 . In this way, the target plate 40 according to the second embodiment contacts the two planes at which the corners of the object to be measured intersect at the same angle as the target plate 10 according to the first embodiment. can be aligned by

FIG. 7A is a diagram illustrating a state in which the target plate 40 according to the second embodiment is aligned by contacting the obtuse-angled corner portion 50 of the building 30 . Since the angle of the corner portion 50 is 105 degrees, the angle between the first plate 41 and the second plate 42 changes by 15 degrees with the hinge 43 as the center. At this time, the rocking plate 13 is rotated 90 degrees around the hinge 12 with respect to the first plate 41 . In this way, the target plate 40 according to the second embodiment can be aligned by contacting the two intersecting planes of the obtuse-angled corner portion 50 of the object to be measured at the same angle.

FIG. 7B is a diagram illustrating a state in which the target plate 40 according to the second embodiment is aligned by contacting the acute-angled corner portion 60 of the building 30 . Since the angle of the corner portion 60 is 75 degrees, the angle between the first plate 41 and the second plate 42 is changed by 15 degrees around the hinge 43 in the closing direction. At this time, the rocking plate 13 is rotated 90 degrees around the hinge 12 with respect to the first plate 41 . In this manner, the target plate 40 according to the second embodiment can be aligned by contacting the two intersecting planes of the acute-angled corner portion 60 of the object to be measured at the same angle.

As described above, according to the target plate 40 according to the second embodiment, even if the angle of the corner portion 33 of the building 30 is an angle other than 90 degrees, the target plate 40 is Alignment can be achieved by contacting two planes at the same angle.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Configuration additions, omissions, substitutions, and other changes are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is defined by the utility model claims.

1: laser rangefinder 3: laser beam 10: target plate 11: body plate 12: hinge 13: rocking plate 16: hinge 17: extension plate

Claims (2)

A target plate for a laser rangefinder that reflects laser light emitted from the laser rangefinder,
a body plate having a target surface;
a swing plate pivotally attached to the body plate by a hinge;
The swing plate is configured to be able to take an alignment posture perpendicular to the target surface of the body plate and a retracted posture overlapping the body plate,
It is characterized in that the two intersecting planes formed by the rocking plate and the main body plate in the alignment posture are brought into contact with the two intersecting planes of the corner portion of the object to be measured so as to align the corners. , the target plate of the laser rangefinder. an extension plate pivotally attached to an end of the body plate by a hinge;
The extension plate is configured to be able to take an extended posture connected to the main body plate and a retracted posture overlapping the main body plate,
2. A target plate for a laser rangefinder according to claim 1, wherein a single plane formed by said extension plate and said body plate in an extended posture is defined as a target plane.

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