JPH0339925Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a foldable portable antenna device which is made compact and easy to accommodate and transport by folding the support column when being accommodated.

In general, a portable antenna device can be easily assembled and disassembled, and is easy to store and transport, so that it can be set at a desired position at any time to transmit and receive radio waves with the other party, and can be moved to another location after use. Something is desired. The focus-fed antenna device also includes a reflector having a curved surface that is generated when rotating around the y-axis of a parabola y=X ² /4f, a primary radiator placed at the focal point of this reflector, and a primary radiator that is placed at the focal point of this reflector. It consists of a support column that maintains the relative positions of the reflector and the primary radiator, and a direction adjustment mechanism that directs the reflector in any direction.

Conventionally, this portable antenna device is packaged to prevent damage from contact with other objects during transportation, but if the device is packaged without being disassembled, the volume of the packaging material increases, which increases the weight of the package and makes handling difficult. It was inconvenient. Furthermore, when the device is disassembled into constituent units and packaged, the number of units to be packaged generally increases, and disassembly and assembly are troublesome.

An object of the present invention is to provide a foldable antenna device that eliminates such conventional drawbacks, reduces the weight and external dimensions during transportation, and improves work efficiency and safety.

The present invention provides a mechanism that allows the support column to support the primary radiator, which is placed relatively far away in the antenna device, to be folded with a simple operation, thereby making it easier to store and transport the primary radiator. This is a foldable antenna device that has a smaller external size and is easier to handle.

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

FIG. 1 is a side view of an embodiment of the present invention. The reflector 1 of this antenna device and the primary radiator 2 arranged at its focal point are held in relative positions by a foldable support column 3, and the reflector 1 and the support column 3 are located on the movable side 41 of the direction adjustment mechanism 4, respectively. Fixed. This direction adjustment mechanism 4 has a movable side 41 and a fixed side 4.
The movable side 41 has a structure that allows it to move in any direction of left and right, upward and downward, and to direct the reflector 1 in the direction of incoming radio waves.

Figure 2 is a side view of the device in which the support column 3 in Figure 1 is folded down to reduce the size of the device.
FIG. 3 is a sectional view of the folding mechanism portion of the support column 3 shown in the figure. The shaft 34 of this support column 3 is inserted through the rotating part 31 and the fixed part 32, and the rotating part 31 can rotate around this shaft 34. When extending the support column 3 as shown in FIG.
Align the hole 35 of the rotating part 31 with the hole 37 of the fixed part 32 and insert the fixing pin 33. Also, when folding the support column 3 as shown in FIG.
Align the holes 37 and insert the fixing pin 33.

As explained above, the antenna device according to the present invention has a mechanism that can be easily folded onto the support column, thereby reducing the external dimensions and achieving a shape that is easy to handle without wasting the weight and dimensions of the packaging material. , work efficiency during storage and transportation is high, and safety is high.

[Brief explanation of the drawing]

Figure 1 is a side view of the embodiment of the present invention, Figure 2 is a side view of the antenna support shown in Figure 1 folded up, and Figure 3 is a side view of the embodiment of the present invention.
The figure is a cross-sectional view of the folding mechanism part of the support column in FIG. 1. In the figure, 1...Reflector, 2...Primary radiator, 3...Support column, 31...Rotating part, 32...Fixing part, 33...Fixing pin, 34...Axis, 35,
36, 37...hole, 4...direction adjustment mechanism, 41...
. . . movable side, 42 . . . fixed side.

Claims (1)

[Scope of Claim for Utility Model Registration] A small portable antenna device, which is rotatable around an axis by bending a support column that fixes an antenna reflector and a primary radiator so as to maintain their relative positions. The primary radiator has a bent structure divided into two parts: a first supporting column that is fixed in position; and a second supporting column that is fixed in position, the antenna reflector having the bending shaft at the end; Fixing the support column in an extended state such that the primary radiator is located at the focal point of the antenna reflector, and bending the support column such that the primary radiator is located near the reflecting surface of the antenna reflector. holes penetrating the first and second support pillars provided near the bending axis to correspond to the fixation in the above-mentioned case, respectively; and a state fixing hole for fixing the extended state or the bent state by inserting into the penetrating hole. A foldable antenna device comprising: a pin; and a direction adjustment mechanism that can direct the reflector in any direction.