JPH0132403Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horizontal level adjustment mechanism used for horizontally installing a small radar antenna stand or the like.

Conventionally, this type of horizontal leveling mechanism is shown in FIG.
As shown in b and c, there are 3
It has a structure in which the upper plate 1 is horizontally supported by supporting it at a point and by rotating the adjustment bolt 3. The adjustment bolt 3 has one end connected to a ball joint 4 fixed to the top plate 1, and the other end connected to a slide nut 5 fixed to the bottom plate 2.
It is connected to the. By loosening the lock nut 6 and turning the handle 7 fixed to the adjustment bolt 3, the distance between the top plate 1 and the bottom plate 2 is adjusted by turning the adjustment bolt 3. As described above, the conventional horizontal level adjustment mechanism is a system that adjusts the horizontal level by adjusting the adjustment bolts 3 at three points, and has the drawbacks that adjustment takes time, and the structure is complicated and expensive.

An object of the present invention is to provide a horizontal level adjustment mechanism that takes a short time to adjust the horizontal level, has a simple structure, and is inexpensive.

The horizontal level adjustment mechanism according to the present invention each has one tapered surface and a horizontal surface opposite to this tapered surface, and the taper angles formed by the tapered surface and the horizontal surface are θ1 and θ2 (θ1=θ2 or θ1≠θ2), and first and second sliding plates are able to slide and rotate in contact with each other around a common axis; first and second clamping plates that clamp the first and second sliding plates in the extending direction; slidingly rotating at least one of the first and second sliding plates; The first and second clamping plates are configured to give a relative inclination angle up to the sum of the taper angles [θ1 + θ2], and to set one of the first and second clamping plates horizontally. .

Next, the present invention will be explained in detail with reference to the drawings.

Figure 2a is a top view of an embodiment of the present invention, Figure 2b
and c are its cross-sectional views, Figure 3 a, b, c and d,
FIG. 3e is a plan view and a side view showing the horizontal level adjustment operation according to the present embodiment.

This embodiment includes low-friction tapered sliding discs (hereinafter referred to as tapered discs) 8a and 8b whose surfaces that are in contact with each other are tapered.
A top plate 11 and a bottom plate 12 which have a shaft 11a in the center to which the discs 8a and 8b are fitted and sandwich the tapered discs 8a and 8b from above and below, and the top plate 11 and the bottom plate 12 are
It has lock nuts 6 and bolts 9 that are connected at certain points, and a handle 17 for rotating the tapered discs 8a and 8b.

The tapered discs 8a and 8b are rotated using the handle 17 to change the relative inclination angle of the surfaces of the top plate 11 and the bottom plate 12 to adjust the horizontal level. , B and tapered surface C to slide and rotate. Therefore, it is necessary to reduce the friction of these sliding surfaces as much as possible, and for this purpose, the tapered discs 8a and 8b are low-friction sliding discs. To do this, consider the combination of materials used, or use rollers on the sliding surface. As for the combination of materials, for example, a low friction state can be achieved by using a combination of two different metals with slightly different coefficients of friction, or by using a combination of a metal material and a resin material (such as Teflon). .

Next, an example of horizontal level adjustment using the low-friction tapered sliding discs 8a and 8b will be described with reference to FIG.

As shown in FIGS. 3a and 3d, two tapered disks 8a and 8b have taper angles of θ1 and θ2, respectively.
are combined so that their contacting tapered surfaces are in a positional relationship opposite to each other. The composite angle at this time is the minimum. Next, the tapered disk 8a is fixed,
When the tapered disk 8b is rotated in the direction of the arrow as shown in FIG. 2B, point B in FIG. If you continue to rotate it as shown in figure c,
The angle α=180°, that is, point B coincides with point A of the tapered disk 8a. At this time, the combined angle of the tapered discs 8a and 8b becomes a maximum value θ1+θ2, as shown in FIG.

By sliding and rotating the two tapered disks 8a and 8b on top of each other and adjusting the amount of rotation, the composite angle can be set to any angle up to the maximum of θ1+θ2. I can do it. In other words, the horizontal level of either the top plate 11 or the bottom plate 12 can be adjusted with respect to the inclination of the top plate 11 and the bottom plate 12 up to the relative angle θ1+θ2.

Note that when rotating the tapered discs 8a and 8b to adjust the horizontal level, the three bolts 9 and lock nuts 6 that connect the top plate 11 and the bottom plate 12 should be loosened, and in this state, the After the level adjustment is completed, the lock nut 6 is tightened again to fix it, as shown in FIG. 2c.

As explained above, the structure of the present invention is simplified by using the tapered sliding disc, so it can be manufactured at a low cost, and the level adjustment can be easily done in a short time.

[Brief explanation of the drawing]

Figure 1a is a top view of a conventional horizontal level adjustment mechanism, Figures b and c are front views thereof, Figure 2a is a top view of an embodiment of the present invention, Figures b and c are sectional views thereof, Figures 3a, b, c, d, and e are a plan view and a side view showing the horizontal level adjustment operation according to this embodiment. 1, 11... Top plate, 2, 12... Bottom plate, 3...
Adjustment bolt, 4... Ball joint, 5... Slide nut, 6... Lock nut, 7, 17...
...Handle, 8a, 8b...Low friction tapered sliding disc, 9...Bolt.

Claims (1)

[Claims for Utility Model Registration] Each has one tapered surface and a horizontal surface opposite to this tapered surface, and the taper angles formed by the tapered surface and the horizontal surface are θ1 and θ2, respectively.
(θ1 = θ2 or θ1≠θ2), and the first and second parts are slidable and rotatable in contact with each other around a common axis.
a sliding plate that is in contact with these first and second sliding plates, respectively, and extends in the direction in which the shaft extends;
first and second clamping plates that clamp a sliding plate; sliding and rotating at least one of the first and second sliding plates to apply the taper to the first and second clamping plates; A horizontal level adjustment mechanism, characterized in that one of the first and second holding plates is set horizontally by giving a relative inclination angle up to the sum of angles [θ1+θ2].