JPH026647Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting mechanism for a directional device mounted on the top of a stand, tripod frame, or the like.

[Conventional technology]

Devices with directivity that are mounted on the top of a stand, tripod, etc. are generally mounted via a mount consisting of a horizontal adjustment section and a vertical adjustment section between the stand, etc. and the device. .

FIG. 1 is a side view of a device equipped with a mounting mechanism.

In the figure, a mount 4 consisting of a horizontal adjustment section 5 and a vertical adjustment section 6 is attached to the upper part of the stand 1. For example, a millimeter wave band radio device 2 is fixed to the upper part of the vertical adjustment section 6.
An antenna 3 is attached to the radio device 2.

A mount 4 is used to direct the antenna 3 in a desired direction. The horizontal angle, ie, the azimuth angle, of the antenna 3 is adjusted by the horizontal direction adjustment section 5, and the vertical direction angle, ie, the elevation angle, is adjusted by the vertical direction adjustment section 6.

In FIG. 2, A is a sectional view and B is a plan view of the horizontal adjustment section of a conventional mount.

In FIG. 2, reference numeral 8 denotes a disk-shaped fixing base fixed to the upper end surface of the stand 1. On the upper surface of the fixed base 8, there is a rotary plate 9 having a flange 9a at the bottom.
The end face of the flange 9a and the upper face of the fixing base 8 are slidably attached.

Then, a stepped hole is provided in the shaft center of the rotary disk 9, and the stepped core shaft 10 is inserted into the stepped hole.
0 is fixed to the upper surface of the fixing base 8 using machine screws.

Therefore, by manually operating the rotary disk 9, the rotary disk 9 can be rotated on the upper surface of the fixed base 8 about the core shaft 10.

On the other hand, the flange 9a is provided with an arc-shaped slotted hole 12 concentric with the axis of the rotating disc 9, and a fixing screw 13 screwed onto the fixing base 8 is inserted into this slotted slot.

Note that the screw hole into which this fixing screw 13 is screwed is as follows.
A large number of bits are provided on a concentric circle formed by a plurality of slotted holes 12, with bits approximately equal to the length of the slotted holes 12.

Therefore, with the fixing screw 13 loosened, turn the rotary plate 9.
is rotated in a desired direction, and then the screw hole is appropriately selected and the fixing screw 13 is tightened, so that the rotary plate 9 is fixed to the fixed base 8 at that angular position.

Further, a vertical adjustment part fixing base 11 is attached to the upper part of the rotary plate 9. Incidentally, a screw hole 9b into which a small screw for fixing the vertical adjustment portion fixing base 11 is screwed is provided on the upper end surface of the rotary plate 9.

In order to enable fine adjustment of the angle at which the rotating disc 9 points, an adjusting screw 17 is installed as described below.

An adjustment screw threading member 16 is attached to the flange 9a of the rotating disc 9 so as to protrude in the radial direction.
It is removably fixed by. A screw hole 16a into which the adjustment screw 17 is screwed is provided horizontally at the lower part of the tip of the adjustment screw screw engagement member 16.

The screw hole 16a is provided so that when the adjustment screw 17 is screwed into the screw hole 16a, the axis of the adjustment screw 17 is substantially tangential to the flange 9a.

Then, the adjustment screw holder 14 is fixed to the outer circumferential surface of the fixing base 8, and the tip of the adjustment screw 17 is rotatably held on the top of the tip of the adjustment screw holder 14, and the direction in which the adjustment screw 17 is attached is freely adjustable. A self-aligning bearing 15 that can be changed is installed.

As described above, by fixing the tip of the adjusting screw 17 to the fixed base 8 via the self-aligning bearing 15 and turning the adjusting screw 17, the adjusting screw threading member 16, that is, the rotary plate 9, can be finely adjusted. Rotate.

[The problem that the idea aims to solve]

However, in the conventional mounting mechanism described above, in order to change the direction of the rotation plate 9 significantly, the fixing screw 13
It is troublesome to rotate the rotary disk 9 by hand after removing the adjustment screw screw 16b and releasing the fixation between the adjustment screw threading member 16 and the rotary disk 9.

Furthermore, unless the fixing screws 13 are tightened with a sufficiently large force, there is a problem that the rotary plate 9 will not be securely fixed.

The present invention was created in view of these points, and an object of the present invention is to provide a mounting mechanism that allows easy rotation and fine adjustment of the horizontal adjustment section.

[Means to solve the problem]

In order to achieve the above object, the present invention, as illustrated in FIG. a substantially disk-shaped rotating member 19 that is movably mounted and whose outer peripheral lower surface forms a circular dovetail groove 24 with the upper surface of the fixed base 18; and a worm wheel 21 provided on the outer peripheral portion of the rotating member 19; The device is equipped with a worm 22 pivotally mounted on a fixed base 18 side so as to mesh with a worm wheel 21, and means for tightening a wedge-shaped piece 25 loosely inserted into a circular dovetail groove 24.

By rotating the worm 22, the azimuth of the rotating member 19 is set as desired, and the wedge-shaped piece 25
The rotating member 19 is fixed by being tightly fitted into the circular dovetail groove 24.

Further, in the above-mentioned mounting mechanism, as illustrated in FIG. A rotating member 28 is provided on the top of the worm wheel 21 and is rotatable about a vertical axis.
is mounted, the worm 22 is pivotally mounted on the rotating member 28 side, and means for tightening the wedge-shaped piece 25 is provided on the rotating member 28 side.

[Effect]

As mentioned above, since the worm wheel is provided on either the rotating member or the fixed base side and the worm is provided on the other side, the worm wheel can be easily and smoothly rotated by turning the worm by hand. The azimuth angle of the rotating member can be finely adjusted.

On the other hand, a circular dovetail groove is provided between the worm wheel and the fixed base, and a wedge-shaped piece is loosely inserted into this circular dovetail groove. Then, when the worm wheel is configured to rotate, a means for tightening the wedge-shaped piece (for example, pressing the wedge-shaped piece against the tapered surface of the circular dovetail groove with a bolt) is provided on the fixed base side, that is, on the worm side,
When the worm wheel is fixed, it is provided on the rotating member side, that is, on the worm.

Therefore, in any case, by tightly fitting the wedge-shaped piece into the circular dovetail groove, movement of the rotating member is prevented and the desired azimuth angle is maintained.

〔Example〕

The present invention will be specifically explained below with reference to the drawings. Note that the same reference numerals indicate the same objects throughout the figures.

3 is a cross-sectional view of one embodiment of the present invention, FIG. 4 is a partially cutaway plan view, and FIG. 4 is a cross-sectional view of another embodiment.

In FIG. 3, a disk-shaped fixing base 18 is fixed to the upper end surface of the stand 1, and a rotating member 19, which is approximately cylindrical and has a stepped hole in its axis, is attached vertically to the top of the fixing base 18. It is mounted so that it can rotate freely around the shaft.

To explain in detail, the stepped core shaft 20 is moved by the rotating member 19.
The core shaft 20 is fixed to the upper surface 18a of the fixing base 18 with small screws, and the rotating member 19
The core shaft 20 is attached to the fixed base 18 so that the lower end surface of the core shaft 20 can slide on the upper surface 18a of the fixed base 18.

Note that the upper end surface of the rotating member 19 has a screw hole 19a for fixing a vertical adjustment part fixing base (not shown).
are arranged.

A ring-shaped rib is provided at the middle part of the outer circumference of the rotating member 19, and a worm wheel 21 is threaded on the outer circumferential surface of this rib.

Then, on the lower surface of the rib on which the worm wheel 21 is provided, a wedge surface 21a downwardly directed outward is formed.
The wedge surface 21a and the upper surface 18a of the fixing base 18 form a circular dovetail groove 24.

On the other hand, the case 23 is fixed to the fixed base 18 so as to cover the worm wheel 21 and expose the upper part of the rotating member 19. A part of this case 23 protrudes horizontally into a box shape, and the worm wheel 21
It pivotally accommodates a worm 22 that meshes with the worm.

One shaft of the worm 22 projects outside the case 23, and a worm knob 22a for rotating the worm 22 is attached to the tip of this shaft.

A wedge-shaped piece 25 is loosely inserted into a desired position of the circular dovetail groove 24, and a screw hole is provided on the outer surface of this wedge-shaped piece 25.

Then, the fixing screw 26 is attached to the case 23 by fitting the neck into the hole in the outer peripheral surface of the case 23, and the threaded portion of the fixing screw 26 is screwed into the screw hole of the wedge-shaped piece 25.

Therefore, by tightening the fixing screw 26, the wedge-shaped piece 25 is pulled toward the outside where the groove width of the circular dovetail groove 24 is narrow, and the wedge surface of the wedge-shaped piece 25 comes into pressure contact with the wedge surface 21a of the circular dovetail groove 24. Therefore, the rotating member 19 is fixed to the fixed base 18.

The meshing mechanism between the worm wheel and the worm is a mechanism that can easily rotate a heavily loaded worm wheel by simply applying a small force to the worm. Therefore, only a small force is required to be applied to the worm knob 22a, and the azimuth angle of the rotating member 19 can be easily and continuously adjusted to a minute angle.

In FIG. 4, a worm wheel 21 is fixed to the axial center of the fixed base 18. As shown in FIG.

Reference numeral 28 denotes a rotating member having a substantially bottomed cylindrical shape that accommodates the worm 22 and can pivot thereon. The rotating member 28 is provided with a rotating member shaft portion 28a that protrudes from the shaft center portion on the hollow side. This rotating member shaft portion 28
a is rotatably fitted into a bearing hole provided at the axial center of the upper end surface of the worm wheel 21.

The worm 22 is pivotally supported by a rotating member 28 so as to mesh with the worm wheel 21.

Therefore, by rotating the worm 22, the worm 22 rotates on the pitch circle of the worm wheel 21. That is, the rotating member 28 rotates around the rotating member shaft portion 28a above the fixed base 18.

A wedge surface slanting outward is formed on the lower surface of the worm wheel 21, and this wedge surface and the upper surface of the fixing base 18 form a circular dovetail groove 24. A wedge-shaped piece 25 is loosely inserted into the circular dovetail groove 24 at a desired position.

A screw hole is provided on the outer surface of this wedge-shaped piece 25, and the neck is inserted into the hole on the outer peripheral surface of the rotating member 28 to attach the fixing screw 32 to the rotating member 28. It is screwed into the screw hole of the piece 25.

Therefore, by tightening the fixing screw 32, the wedge-shaped piece 25 is pulled toward the outside where the groove width of the circular dovetail groove 24 is narrow, and the wedge surface of the wedge-shaped piece 25 comes into pressure contact with the wedge surface of the circular dovetail groove 24. Therefore, the rotating member 28
is fixed to the fixed base 18.

In the horizontal adjustment section having such a structure, the worm rotates together with the rotating member. Therefore, since the worm and the antenna and radio device mounted above are always in a constant relative position, there is an advantage that the antenna and the like do not become an obstacle to operating the worm.

[Effect of idea]

As explained above, the present invention has practical advantages such as easy rotation and fine adjustment of the horizontal adjustment section, and the ability to securely fix the rotating member even if the force applied to fix it is small. This is an extremely effective mounting mechanism.

[Brief explanation of the drawing]

Fig. 1 is a side view of the device to which the mount mechanism is attached, Fig. 2 is a sectional view of a conventional horizontal adjustment section, B is a plan view, and Fig. 3 is a side view of an embodiment of the present invention. FIG. 4 is a cross-sectional view of another embodiment. In the figure, 1 is a stand, 2 is a radio, 3 is an antenna, 4 is a mount, 5 is a horizontal adjustment unit,
6 is a vertical adjustment section, 8 and 18 are fixed stands, 9 and 1
9, 28 are rotating members, 10, 20 are core shafts, 21
22 is a worm wheel, 23 is a case, 24 is a circular dovetail groove, and 25 is a wedge-shaped piece.

Claims (1)

[Scope of Claim for Utility Model Registration] A disc-shaped fixed base fixed to the upper part of the stand 1, a rotary member attached to the upper part of the fixed base so as to be rotatable about a vertical axis, and the fixed base Alternatively, a worm wheel 21 is provided on the outer periphery of one of the rotating members so that its axis is vertical, and a worm wheel 21 is provided on either the fixed base side or the rotating member side so as to mesh with the worm wheel 21. A worm 22 is pivotally mounted on one side, a circular dovetail groove 24 constituted by the lower surface of the outer periphery of the worm wheel 21 and the upper surface of the fixed base, and a wedge-shaped piece 25 loosely inserted into the circular dovetail groove 24. ,
By rotating the worm 22, the azimuth of the rotating member is set to a desired value, and by tightening the wedge-shaped piece 25 to the circular dovetail groove 24, the azimuth angle of the rotating member is set as desired. A mount mechanism characterized in that the rotating member is configured to be fixed.