JPH0113449Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a dipole antenna power feeding device that is attached to the upper end of a metal support of a microphone stand and uses the support as one element of a dipole antenna.

Conventionally, as this type of dipole antenna feeding device, there is one shown in FIGS. 1 and 2.

In FIGS. 1 and 2, reference numeral 2 denotes a rectangular parallelepiped main body, and a plug 4 is attached to the side surface of the main body 2. The center terminal of the connector 4 is connected to a telescoping rod antenna 6 that is detachably attached to the top surface of the main body 2, and the outer peripheral terminal of the connector 4 is connected to a strut fitting part provided on the bottom surface of the main body 2 and having an internal thread 7. 8 is connected.

The dipole antenna power supply device configured in this way is electrically and mechanically connected to the support by screwing the female screw 7 into the microphone holder mounting screw at the upper end of the support of the microphone stand. The stand prop is a dipole
functions as the ground side element of the antenna.

However, for microphone holder mounting screws, screws of various sizes of various standards such as metric standard and inch standard are used inconsistently, and the size and standard of this screw and the size and standard of female thread 7 are not uniformly used. Otherwise, there was a drawback that the main body 2 could not be attached to the microphone stand.

This invention attempts to provide a dipole antenna power feeding device that eliminates the above-mentioned drawbacks.

This invention will be explained below based on an illustrated embodiment.

In Figures 3 to 5, 10 is a main body, which is made of an insulator such as synthetic resin and is formed into a slightly flat rectangular parallelepiped shape, and is penetrated in the vertical direction at a position offset to the side from the center. A pillar loose insertion hole 12 having a square planar shape is provided. The lower part 15 of one inner side surface 13 of the strut loose insertion hole 12 is located somewhat outward than the upper part 21 thereof.

Further, the main body 10 is largely hollowed out from the bottom in a portion adjacent to the column free insertion hole 12, as shown in FIG. One side edge 16a of the flange 16 formed with
In a state where it is positioned on the same plane as the upper part 21 of 3,
It is fixed downward by screws 22.

Further, a screw 28 having a knob 26 is screwed into the inner surface 24 facing the inner surface 13 from the outside, and a protective cap 30 made of synthetic resin is attached to the tip of the screw 28, and the upper part 21 of the inner surface 13 and The vicinity of the upper end of the conductive column 32 is held between the edge 16a of the flange 16.

Further, the center terminal 34 of the plug 18 is connected to the center terminal 38 of the antenna connection portion 36 protruding from the top surface of the main body 10.
The center terminal 38 is connected to the antenna part 3 which is removably screwed to the antenna connecting part 36.
It is connected to the lower end of the rod antenna 40 of No. 9.

In FIG. 5, 42 is a microphone holder mounting screw, 44 is a tripod, 46 is an insulating rubber foot attached to the tip of the tripod, and 48 is a power supply line connected to the plug 18.

The dipole antenna power supply device configured in this way is constructed by inserting the support column 32 into the support support loose insertion hole 12 and tightening the screw 28.
1. The support 32 is held between the edge 16a of the flange 16 and the screw 28 to attach the main body 10 to the support 32, and since the flange 16 and the support 32 are in contact, the support 32 and the outer terminal 14 are connected. An electrical connection is made, and the support column 32 functions as a ground side element of the dipole antenna.

As explained above, according to this invention, the pillar 3
2.Regardless of the size and standard of the microphone holder mounting screw 42 at the upper end, if the column 32 is thick enough to fit into the column loose insertion hole 12, this column 32 can be inserted into the dipole.
A dipole antenna power feeding device that can be used as one antenna element of a pole antenna can be realized.

In the above embodiment, a microphone holder with a microphone attached thereto may be attached to the microphone holder attachment screw 42 and used at the same time.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional dipole antenna power feeding device, Fig. 2 is a bottom view of the conventional example, Fig. 3 is a partial sectional view of an embodiment based on this invention, and Fig. 4 is a bottom view of the same embodiment. FIG. 5 is a side view showing the usage state of the same embodiment. 10... Main body, 12... Pillar loose insertion hole, 14...
Outer peripheral terminal, 16...Flange, 18...Connection, 2
8...screw, 32...post, 34, 38...center terminal, 40...rod antenna.

Claims (1)

[Scope of utility model registration request] The main body has a through hole vertically drilled into which the metal support of the microphone stand is loosely inserted, and the connector is attached to the main body so that the flange part integrally formed with the outer peripheral terminal protrudes from the inner surface of the through hole. A plug, a fixing member that crimply supports the support column on the protruding portion of the flange portion within the through hole, and an antenna element that extends upward from the main body and has its lower end connected to the center terminal of the plug. Dipole antenna power supply device.