JP2507593Y2 - Surveying corner cube - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a corner cube for surveying used for indicating a measuring point in measurement by a lightwave rangefinder.

(Prior Art and Problems Thereof) As an example of a conventional corner cube for surveying, one in which one or more glass corner cubes are attached to a mount is used. This has a high reflectance and can reduce the dispersion of reflected light and is suitable for long-distance use, but it has a problem that it is large and heavy and the manufacturing cost is high.

In addition, as a conventional pole that supports a corner cube for surveying, a non-expandable one is used. Not only is this inconvenient to carry, but there is also the problem that a height adjustment clamp must be prepared to support the surveying corner cube at an appropriate height above the measuring point.

(Purpose of the Invention) The present invention has been made in view of the above problems related to the conventional corner cube for surveying, and is suitable for relatively short distance measurement, has a simple structure, is low in manufacturing cost, and is lightweight. The purpose is to provide a corner cube for surveying.

A further object of the present invention is to provide a corner cube for survey that can be quickly set to a predetermined height of a measuring point and can be set relatively easily on a vertical line of the measuring point.

(Constitution of the Invention) The present invention comprises a housing having a flat bottom surface, a plurality of micro-corner cubes arranged side by side in a plane, a reflector attached to a side surface of the housing, and a housing capable of being housed in the housing. And a retractable leg portion, the reflecting plate forming a collimation mark having at least two different colors, the corner cube for surveying.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, the surveying corner cube includes a housing 4 having a substantially square reflecting plate 2 on its side surface, and a telescopic housing 4 attached to the bottom surface of the housing 4.
And a leg portion 8 that can be stored inside.

As shown in FIG. 2, the reflection plate 2 is a reflection member made of a transparent synthetic resin that has a flat surface and a back surface formed to form a plurality of micro-corner cubes 10. Reflector 2
The collimation mark (1) is formed by four red transparent triangular portions 14 whose vertices are gathered at the center of the reflector 2 and a yellow transparent background portion 16.

When not used as a corner cube, the legs 8 are shortened and stored in the housing 4 especially during transportation, and the stored state is maintained by a lock button 18 provided on the back surface of the housing 4 as shown in FIG. Has been done. Therefore, in this case, the corner cube for main survey is a substantially rectangular parallelepiped with no protruding portion.

On the other hand, at the time of use, the leg 8 is extended by pressing the lock button 18. At this time, if the housing 4 is placed at a desired height approximately on the vertical line of the measuring point, the tips of the legs 8 extend to the vicinity of the measuring point. After that, the tip of the leg 8 is accurately placed on the measuring point, and the leg 8 is erected vertically,
The corner cube for main survey can be positioned accurately.

In the above-mentioned embodiment, the reflecting plate is provided when the reflecting surface is integrally formed. However, instead of this, the triangular portion and the background portion are formed of transparent materials of different colors, respectively, and combined with the front surface of the housing. It may be attached and configured.

(Advantages of the Invention) According to the present invention, a housing having a flat bottom surface, a plurality of micro-corner cubes formed side by side in a plane, a reflector attached to a side surface of the housing, and the housing can be housed in the housing. And a retractable leg portion attached to the base plate, and the reflecting plate forms a collimation mark having at least two different colors.

Therefore, the surveying corner cube of the present invention has the advantages of simple structure and low manufacturing cost. In addition, the surveying corner cube of the present invention can be easily and quickly set accurately to a desired height for measurement by using the extendable legs, and the legs are completely stored in the housing for easy carrying. In addition to being convenient, it also has the advantage that it can be placed directly on a flat surface using the flat bottom surface of the housing.

[Brief description of drawings]

1 is a front perspective view of a surveying corner cube of an embodiment of the present invention with its legs extended, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, and FIG. 3 is It is a perspective view of the back side in the state where the leg of the corner cube for surveying was stored. 2 …… Reflector 4 …… Housing 8 …… Legs 10 …… Micro corner cube 14 …… Triangle part 16 …… Background part 18 …… Lock button

Claims (1)

(57) [Scope of utility model registration request] 1. A housing having a flat bottom surface, a reflecting plate formed by arranging a plurality of micro-corner cubes in a plane shape, mounted on a side surface of the housing, and extendable and retractable so as to be housed in the housing. The corner cube for surveying, characterized in that the reflecting plate is formed with collimation marks of at least two different colors.