JPS6335369Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horizontal and vertical device for indicating horizontal lines, vertical lines, or specific points of structures and buildings.

The present applicant has already proposed a method in which a light beam such as a laser beam is diffused in the horizontal and vertical planes using a cylindrical lens to measure such horizontal or vertical lines. In such a device, the direction of the light beam of the light beam generator can be precisely adjusted horizontally, but the front reference plane of the light beam generator is not precisely machined, and therefore the direction of the cylindrical lens fixed thereto is also difficult to adjust. It has the disadvantage that it is not necessarily supported exactly vertically or horizontally, so that the plane of the light beam scattered thereby is not precise.

The present invention eliminates this drawback by supporting the monoplane scattering optical element such as the cylindrical lens horizontally or vertically by gravity.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, an outer mounting frame 4 that emits an annular light beam is attached to the front reference surface 3 of the laser beam generator 2, and a fan beam tube 5 is attached to the outer mounting frame 4. Fit together for rotation. Note that 6 is a flange provided on the outer periphery of the inner end of the cylinder 5, and 7 is a spring washer interposed between the flange 6 and the outer frame 4.

As shown in FIG. 1B, a positioning protrusion 8 is provided on the outer peripheral surface of the cylinder 5, and stoppers 9 and 10 are provided on the mounting outer frame 4, respectively, and engage with the protrusion 8 at a position rotated by 90 degrees. to be planted. Mounting end surface 5a of this tube 5
At the center is a through hole 11 through which the laser beam 1 passes.
A support arm 12 extending in the axial direction inside the cylinder 5 is connected to the end surface 5a, and a second support arm 12 extending in the axial direction is provided at a position perpendicular to the support arm 12.
A support arm 13 is provided in series. Two receivers 14 and 15 are provided on the front and rear portions of the first arm 12, and one receiver 16 is provided on the second arm 13.

As shown in FIG. 1B, a cylindrical lens 21 for laser beam diffusion is supported laterally at the center of the suspension body 20 so that its central axis is orthogonal to the light beam.
The arm 22 extending in one direction has the receiver 14,1
5 and an arm 25 extending transversely to the arm 22 thereof.
is provided with a pivot 26 supported by the receiver 16, and weights 28 and 29 for balance are attached to an arm 27 extending in the opposite direction to the arm 25.

Next, how to use this device will be explained.

When the laser beam 1 is to be diffused in the vertical direction, the tube 5 is rotated to a position where its protrusion 8 comes into contact with the stopper 9, as shown in FIG. As a result, the pivots 23 and 24 come into contact with the receivers 14 and 15 of the first support arm 12, and the suspension body 20 is held precisely with the center axis of its cylindrical lens 21 horizontally due to gravity. Therefore, the laser beam 1 incident on the cylindrical lens 21 is accurately diffused in the vertical plane, as shown in FIG. At this time, the suspended body 20 is regulated by the two pivots 23 and 24 in the upward and downward directions and in the front and rear directions, but since this upward and downward direction is the direction of rotation around the optical axis of the cylindrical lens, there is no problem even if there is an error. The optical axis of the cylindrical lens is aligned with the laser beam 1.
The effect of the error on the vertical diffusion direction is small.

Next, when the laser beam 1 is to be diffused in the horizontal direction, the tube 5 is rotated to a position where the protrusion 8 comes into contact with the stopper 10, as shown in FIG. As a result, the pivot 26 comes into contact with the receiver 16 of the second support arm 13, and the center axis of the cylindrical lens 21 of the suspended body 20 is precisely oriented vertically, that is, directly downward, due to gravity. Therefore, the laser beam 1 incident on the cylindrical lens 21 is accurately diffused within the horizontal plane.

In the above embodiment, the suspension body 20 has pivots 23, 2
4 or 26, but it may be hung by strings or other means instead.

Figures 3 and 4 show examples.
The same parts as in FIG. 2 are given the same reference numerals, and only the different parts will be explained.

As shown in FIG. 3B, a protrusion 8 is implanted in the outer mounting frame 4, and the protrusion 8 protrudes from an arcuate hole 9a provided in the end face 5a of the cylinder 5 and extending within a 90° angle range.

The suspension body 20a is formed into a square tube shape, and a cylindrical lens 21 is held at the center between a pair of opposing sides, and a pair of strings 1 are attached to both sides of the other sides.
4a, 14a provided on the end surface 5a of the cylinder 5.
The support arm 12a is suspended from the front and rear of the support arm 12a, and both ends of the side adjacent to that side are connected to the tube 5 by strings 16a.
It is suspended from a second support arm 13a provided on the end surface 5a of.

In this device, when the laser beam 1 is to be diffused in the vertical direction, the tube 5 is rotated as shown in FIG.
Place the first support arm 12a in the upper position. As a result, the hanging body 20a is suspended by the strings 14a, 14a, the central axis of the cylindrical lens 21 is held horizontally by gravity, and the laser beam 1 is accurately diffused in a vertical plane.

If laser beam 1 is to be diffused horizontally, the fourth
Rotate the cylinder 5 by 90 degrees as shown in Figure B to open the circular arc hole 9.
The other end of a is brought into contact with the protrusion 8a, and the second support arm 13a is placed in the upper position. As a result, the suspended body 2
0a is suspended by a string 16a, the center axis of the cylindrical lens 21 is directed directly downward due to gravity, and the laser beam 1 is accurately diffused within a horizontal plane.

Although the laser beam 1 is used in the above embodiment, a normal light beam may also be used.

In addition, instead of the cylindrical lens 21, other curved cylindrical lenses, lenticular lenses, transparent fiber bundles,
A uniplane scattering optical element such as unidirectional ground glass may also be used.

Although the hanging bodies 20, 20a are suspended from the first and second support arms 12, 12a, 13, 13a, they may be suspended directly from the tube 5, or they may be suspended from only one position. Good too.

As described above, in the present invention, a single-plane scattering optical element such as a cylindrical lens is installed in a suspended body suspended from two positions at right angles to each other in a cylinder rotatably provided in a horizontal vertical device. Even when the horizontal vertical device is placed directly on the ground, by rotating the cylinder between two positions, its central axis is supported accurately horizontally or vertically by gravity, and the light beam can be accurately spread on horizontal or vertical surfaces, making it possible to achieve precision It is possible to indicate a horizontal line or a vertical line.

[Brief explanation of the drawing]

Figure 1A is a vertical cross-sectional view of an embodiment of the present invention in a vertically diffused state, B is an end view thereof, C is an explanatory diagram of the diffused state, and Figure 2A is a vertical cross-sectional view of an embodiment of the present invention in a horizontally diffused state. 3A is an end view of another embodiment of the present invention, B is an end view thereof, FIG. 4A is a longitudinal sectional view of another embodiment of the present invention in a horizontally diffused state, B is an end surface thereof It is a diagram. DESCRIPTION OF SYMBOLS 1...Light beam, 2...Generation device, 4...Mounting outer frame, 5...Cylinder, 20, 20a...Suspension body, 2
1, 21a...Cylindrical lens.

Claims (1)

[Scope of utility model registration request] A cylinder is rotatably fitted into the mounting outer frame for emitting the light beam of the light beam generator of the horizontal vertical device, and a suspended body is suspended from two positions perpendicular to each other within the cylinder. , a horizontal/vertical device in which a one-plane scattering optical element is provided on the suspended body so that its central axis is orthogonal to the light beam.