JP2590763Y2 - target - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] This invention relates to the target,
In particular, the present invention relates to a reflective target installed at a measurement position when measuring a distance or an angle at a total station.

[0002]

2. Description of the Related Art When measuring a distance or an angle using a total station, a target composed of a reflecting prism is installed at a measurement point, and a light wave emitted from the total station is irradiated on the target, and a light wave reflected from the target is emitted. The total station receives the light again, and the distance and the angle are obtained from the phase difference between the signal of the received reflected light and the reference signal.

[0003] However, since a target formed of a reflecting prism is usually supported on a tripod, for example, when a wall is a measurement point, the target must be installed at a position distant from the measurement point. Difficult to measure accurately. In order to solve such a problem, for example, Japanese Utility Model Laid-Open No. 3-7
No. 8212 proposes a sheet-like target. In the target disclosed in this publication, a reflection surface is formed on one surface and an adhesion surface is formed on the other surface. The surface can be attached to a measurement point such as a wall surface. However, the sheet-like target disclosed in this publication also has a technical problem described below.

[0004]

That is, in the measurement of the total station, it is desirable to set the target so as to face the light wave emitted from the total station, but the object to be measured is not necessarily a uniform vertical surface. Instead, they are often oriented in various directions. Further, even if the object to be measured is a vertical surface, the measurement point may be located at a position far apart in the vertical direction from the installation level of the total station.

However, under such measurement conditions, if a sheet-shaped target as shown in the above publication is adhered to the measurement point, the target cannot be directly opposed to the light wave. However, there is a problem that the reflected light does not return to the direction of the total station, or the amount of reflected light becomes very small even if it returns.

The present invention has been made in view of such a problem, and an object thereof is to improve the probability of facing a light wave by appropriately selecting a plurality of reflection directions. The goal is to provide a target.

[0007]

In order to achieve the above object, the present invention provides a target for reflecting a light wave of a total station, comprising a target plate for displaying a measurement position and a holder for holding the target plate by suction. Further, the holder has four or more suction surfaces holding side surfaces of the target plate, and these suction surfaces are set at different angles of intersection with adjacent other surfaces. I do.

The holder has a magnet block and a ferromagnetic plate of the same shape fixed to both sides of the magnet block, and the ferromagnetic plate has an end surface substantially serving as a suction surface of the target plate. It is formed in the shape of a right-angled triangle, and the portion corresponding to the hypotenuse of the triangle has an intersection angle with the adjacent other end surface of 60 degrees.
It is possible to provide two inclined end surfaces which are at an angle of 45 °.

The target plate has a substantially rectangular main body and a cross mark for indicating the center of the target plate. One line of the cross mark is aligned with the lower edge of the main body. Can be provided. Further, the target plate may be provided with a bent portion protruding forward on an upper end side opposite to a lower end edge of the main body, and the entire cross section may be formed in a substantially L-shape.

[0010]

According to the target having the above structure, the holder for holding the target plate by suction has four or more suction surfaces on the side surfaces, and these suction surfaces have different angles of intersection with the adjacent other surfaces. Since it is set, if any of the suction surfaces is set at the measurement position, the angle between the setting surface and the target plate can be changed to four or more.

According to a second aspect of the present invention, the holder has a magnet block and ferromagnetic plates of the same shape fixed to both surfaces of the magnet block, and the ferromagnetic plate has an end face. Is formed in a substantially right-angled triangular shape serving as an adsorption surface of the target plate, and at a portion corresponding to the hypotenuse of the triangle,
Since it has two inclined end faces whose intersection angles with the adjacent other end face are 60 ° and 45 °, the attraction force of the target plate of the ferromagnetic plate is increased, and the angle between the installation surface and the target plate, It can be 30 °, 45 °, 90 °, 60 °.

Further, according to the third aspect of the present invention, the target plate has a substantially rectangular main body portion and a cross mark for displaying the center, and one line of the cross mark is connected to the main body portion. Since it is provided so as to match the lower edge of
When the lower edge is aligned with the measurement point, the measurement point can be measured directly by the total station. Furthermore, according to the configuration of claim 4, the target plate is provided with a bent portion protruding forward on the upper end edge side facing the lower end edge of the main body, and the entire cross section is formed in a substantially L-shape. By holding the bent portion on the suction surface of the holder, the angle between the installation surface and the target plate can be further changed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 and 2 show an embodiment of the target according to the present invention. The target shown in the figure includes a target plate 1 indicating a display position,
And a holder 2 for holding the target plate 1 by suction. FIG. 1 shows the details of the target plate 1.

The target plate 1 shown in FIG. 1 is made of a material that can be adsorbed, for example, an iron-based plate material, and has a substantially rectangular main body 1a. On the front surface of the main body 1a of the target plate 1, a mark 3 indicating a measurement point is written. In this embodiment, the mark 3 is a semicircle and a part of a cross mark so as to indicate a center point. Is composed of
One line of the cross mark is displayed so as to coincide with the lower edge of the target plate 1.

A bent portion 1b which is bent forward at an angle of about 90 ° is integrally formed on the upper end edge side opposite to the lower end edge provided with the mark 3, and the target plate 1 has an entire cross section. It is formed so as to have a substantially L-shape. At the lower edge of the main body 1a of the target plate 1, there is formed a knife edge 1c which is inclined upward and toward the rear surface. The knife edge 1c has a length of about 1 to 2 mm and an angle of about 1 to 2 mm. Is approximately 30 to 45 °.

FIG. 2 shows the details of the holder 2.
The holder 2 shown in FIG. 1 includes a magnet block 4 made of permanent magnets and a pair of ferromagnetic plates 5. In this embodiment, the magnet block 4 is formed in a substantially right-angled triangular shape, but is not necessarily required to have this shape. A pair of ferromagnetic plates 5 having the same shape are used, and the ferromagnetic plates 5 are fixed so as to face both side surfaces of the magnet block 4 with the magnet block 4 interposed therebetween.

The ferromagnetic plate 5 is formed in a substantially right-angled triangle larger than the magnet block 4, and end faces protruding outward from the outer peripheral edge of the magnet block 4 serve as suction surfaces of the target plate 1, respectively. The target plate 1 is a ferromagnetic plate 5
Is held between the end faces. The shape of each ferromagnetic plate 5 is
It has a long end face 5a and a short end face 5b having an intersection angle set to 90 °, and a portion corresponding to the hypotenuse has a first inclined end face 5c having an intersection angle of 45 ° with an adjacent long end face 5a and an adjacent short end face 5c. A second inclined end face 5d having an intersection angle of 60 ° with the end face 5b is provided, and an intersection angle between the first and second inclined end faces 5c, 5d is 165 ° .

The target thus configured is shown in FIG.
Used as shown. First, in the example of use shown in FIG. 3 (A), the long end face 5a is used as a surface to be set on a measurement object,
In this case, the short end face 5b is used as the suction holding surface of the target plate 1. In this case, the angle between the installation surface and the target plate 1 is 90 °, and the center of the mark 3 of the target plate 1 is measured at the measurement point. , Measurement points can be measured directly by the total station.

The example shown in FIG. 3B is a case where the long end face 5a is a surface for installation on the object to be measured and the first inclined end face 5c is a suction holding surface of the target plate 1. In this case, ,
The angle between the installation surface and the target plate 1 becomes 45 °.
The example shown in FIG. 3 (C) is a case where the short end face 5b is used as an installation surface on the object to be measured, and the second inclined end face 5d is used as a suction holding surface of the target plate 1. In this case, the installation surface is used. And the target plate 1 make an angle of 60 °.

The example shown in FIG. 3D shows the first inclined end face 5c.
Is floated, the second inclined end face 5d is used as an installation surface on the object to be measured, and the long end face 5a is used as a suction holding surface of the target plate 1. In this case, the installation surface and the target plate 1 Is 30 °. FIG. 3 (E),
The example shown in FIG. 3F is an example in which the holder 2 having the same configuration is used. In the example shown in FIG. 3E, one of the holders 2 is set in the same state as that shown in FIG. The first holder 2 of the other holder 2 is placed on the long end face 5a of this holder 2.
The inclined end face 5c is placed on the upper holder 2
The target plate 1 is sucked and held on the long end face 5a side of the target.

According to this example, the installation surface and the target plate 1
Is 75 °. In the example shown in FIG. (F), one of the holder 2 is placed with the same state as that shown in FIG. 3 (B), the first inclined end face 5 on c of the holder 2, the second of the other holder 2 The inclined end surface 5d is placed on the lower end surface 5b of the upper holder 2, and the bent portion 1b of the target plate 1 is held by suction.

According to this example, the installation surface and the target plate 1
Is 15 °. In the above example of use, since the knife edge portion 1c is provided on the main body portion 1a of the target plate 1, the lower end of the target plate 1 is held when the target plate 1 is sucked and held at various inclination angles by the holder 2. Since the edge and the installation surface are in sliding contact or line contact, the target plate 1 is in close contact with the suction holding surface, and the measurement point can be more accurately indicated by the lower edge of the main body 1a.

In the target configured as described above, the holder 2 for holding the target plate 1 by suction has four suction end surfaces 5a to 5d on the side surfaces, and these suction end surfaces 5a to 5d are adjacent to each other. Since the intersection angles with the other end faces are set to different angles, the suction end face 5a
When any one of 5 to 5d is installed at the measurement position, the angle between the installation surface and the target plate 1 can be changed to a plurality.

In this case, the installation angle of the target plate 1 can be further changed by combining a plurality of holders 2 having the same shape. Accordingly, the reflection direction of the target plate 1 can be changed to various angles by appropriately selecting the installation surface and the end surface for adsorbing the target plate 1 according to the conditions of the measurement target portion. The probability of being able to directly face the target plate 1 becomes very large.

Also, as in this embodiment, the target plate 1
When the mark 3 is formed as a half-shaped cross and the knife edge portion 1c is formed, the measurement point itself can be measured in the case of a three-dimensional measurement object or the like, and an accurate coordinate value can be obtained. Further, the holder 2 includes a magnet block 4
And a ferromagnetic plate 5 of the same shape fixed to both surfaces of the magnet block 4.
Is increased, and the holder 2 can be adsorbed to the object to be measured if the portion to be measured is an iron-based member.

In the above embodiment, a half-shaped cross is illustrated as the mark 3 displayed on the target plate 1, but a mark of another shape can be used in the present invention. Further, the ferromagnetic plate 5 of the holder 2 is not always necessary, and the magnet block 4 may be formed in a polygon of four or more, and each end face may be an attraction surface of the target plate 1.

Further, the angle of intersection between the suction end faces 5a to 5d of the holder 2 in the above embodiment is not limited to the angle shown in the above embodiment, but can be set to any angle, The number can be more than five.

[0028]

[Effect of the Invention] As described above in detail in the embodiment,
According to the target of the present invention, it is possible to improve the facing probability with respect to the light wave by appropriately selecting a plurality of reflection directions.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a target plate of a target according to the present invention.

FIG. 2 is a front view and a side view showing a target holder according to the present invention.

FIG. 3 is a perspective view showing a usage example of the target according to the present invention.

[Explanation of symbols]

1 target plate 1a body part 1b bent portion 1c knife edge portion 2 holder 3 marks 4 magnet blocks 5 ferromagnetic plate 5a Nagatanmen 5b short end face 5c first inclined end surface 5d second inclined end face

Claims (4)

(57) [Scope of request for utility model registration] 1. A target for reflecting a light wave of a total station, comprising: a target plate for displaying a measurement position; and a holder for holding the target plate by suction, wherein the holder has a side surface for holding the target plate.
The above-mentioned suction surface, wherein these suction surfaces are set at different angles of intersection with adjacent other surfaces. 2. The holder has a magnet block and a ferromagnetic plate of the same shape fixed to both surfaces of the magnet block, and the ferromagnetic plate has an end face which is close to an attraction surface of the target plate. And a portion corresponding to the hypotenuse of the triangle has an intersection angle with the adjacent other end surface of 6 degrees.
2. The target according to claim 1, wherein two inclined end faces of 0 ° and 45 ° are provided. 3. The target plate has a main body part formed in a substantially rectangular shape and a cross mark indicating a center, and one line of the cross mark is aligned with a lower edge of the main body part. The target according to claim 1, wherein the target is provided. 4. The target plate is provided with a bent portion protruding forward on an upper end edge side opposite to a lower end edge of the main body, and has a substantially L-shaped overall cross section. Item 4. The target according to any one of Items 1 to 3 .