JPS5821205Y2 - rod antenna - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a telescopic and rotatable rod antenna.

Rod antennas are used for portable televisions, radios, and cordless telephones.

Since this rod antenna must be installed insulated from the grounding part of these devices, it is usually installed in an outer casing made of an insulating material, and a jumper wire is used to connect this antenna to the antenna terminal of the device.

For this reason, there is an inconvenience that when a chassis in which a device is installed is to be removed from a case for repair or the like, the jumper wire connecting the antenna and the antenna terminal must be removed each time.

Furthermore, since rod antennas are frequently used, there is also the disadvantage that if the attachment part of the outer casing is weak, this part will easily break.

The present invention attempts to improve the drawbacks of the conventional rod antenna by providing a rod antenna mounting structure that can be mounted on a chassis in which equipment is incorporated, insulated from the chassis, and has a robust mounting part. It is something.

Next, one embodiment of the present invention will be described in detail using the drawings.

FIG. 1 is an exploded perspective view of a rod antenna according to the present invention.

In FIG. 1, 1 is a telescopic and rotatable rod antenna.

The rod antenna 1 includes a telescopic antenna part 11, a first
It consists of a bearing part 12, a second bearing part 13, and a fixing part 14.

The first bearing part 12 allows the antenna part 11 to rotate within a determined plane.

The second bearing part 13 is formed in a cylindrical shape and rotatably supports the first bearing part 12, and the first bearing part 12 and the second bearing part 13 allow the antenna part 11 to rotate in all directions. .

The fixing part 14 is provided below the second bearing part 13 and has a flat plate shape.

A screw hole 14a is formed in the center of the fixing part 14.

Reference numeral 2 denotes an antenna holder, which is made of a synthetic resin such as polyamide resin that has mechanical strength and good insulation properties in a high frequency range.

Reference numeral 21 denotes a cylindrical holding portion, in which a hole 21a is formed in the center.

As shown in FIG. 2, an antenna attachment part 22 is formed on the lower side of the hold part 21 and communicates with the hole 21a of the hold part 21.

23 is a lug terminal mounting part, with a hole 23a formed in the center;
The wire hole 23a communicates with the antenna mounting portion 22.

Reference numeral 24 denotes a flange portion extending in the horizontal direction, in which a screw hole 24a is formed.

3 is a lug terminal, and a screw hole 31 is formed at one end.

4 is a mounting screw.

Next, the order of incorporating the rod antenna according to the present invention into equipment will be explained.

In FIGS. 3 and 4, reference numeral 5 denotes a chassis incorporating the equipment, which is made of a metal plate and is normally kept at ground potential.

Reference numeral 6 denotes a printed wiring board fixed on the chassis 5, on which various parts are arranged, although not shown in the figure.

When assembling the rod antenna 1, first attach the antenna holder 2 onto the chassis 5 with screws 7.

Next, when the fixing part 14 of the rod antenna 1 is inserted into the hole 21a of the antenna holder 2 and the rod antenna 1 is pushed deeper, the fixing part 14 is fitted into the antenna mounting part 22 having a substantially rectangular cross section. At the same time, the second bearing part 13 also fits into the hole 21a of the holding part 21.

In this state, the hole 23a of the lug terminal mounting portion 23 and the screw hole 14a of the fixing portion 14 match.

Finally, after inserting the mounting screw 4 into the screw hole 31 of the lug terminal 3 whose tip is soldered to the printed wiring board 6, the mounting screw 4 is inserted into the hole 23a, and then screwed into the screw hole 14a, and the lug terminal is inserted. 3 to the lug terminal attachment part 23 of the antenna holder 2.

By screwing in the mounting screw 4, the antenna terminal of the printed wiring board 6 is electrically connected to the rod antenna 1 via the lug terminal 3.

Further, the second bearing part 13 of the rod antenna is fitted into the hole 21a of the holding part 21 to prevent the rod antenna 1 from wobbling, and the fixing part 14 is fitted into the antenna mounting part 22 to prevent the rod antenna 1 from wobbling. When rotating the second bearing part 13
The rod antenna 1 is prevented from rotating relative to the antenna holder 2, and the rod antenna 1 is prevented from being pulled out from the antenna holder 2 by tightening the mounting screw 4.

Incidentally, when the rod antenna 1 is attached to the chassis 5, it goes without saying that the rod antenna 1 is insulated from the chassis 5 by the antenna holder 2.

As explained in detail above, the present invention allows the rod antenna to be attached to the chassis, so when a chassis with equipment installed is housed in the housing, the rod antenna and equipment attached to the housing as in the case of This eliminates the need to connect jumper wires between the two, making storage easier.

Similarly, it is easy to remove the chassis from the housing.

Unlike conventional cases where the rod antenna is mounted on a housing whose mechanical strength is not so great compared to the chassis, the rod antenna is mounted on a solid metal chassis, so it is difficult to rotate or expand/contract the rod antenna. There is no wobble in operation, and the rod/antenna will not loosen even after many years of use.

In addition, by screwing the antenna holder to the chassis and the rod antenna to the antenna holder, the rod antenna can be electrically insulated and fixed to the metal chassis. Since it can be electrically connected to the board, the installation work becomes simple and the manufacturing cost of the device can be reduced.

In addition, as the rod antenna, a telescopic and rotatable rod antenna can be used as in the above example, and a telescopic rod antenna can also be used.
Needless to say, antennas can also be used.
Ru.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a perspective view of the antenna holder, Fig. 3 is a front view showing the rod antenna attached to the chassis, and Fig. 4 is an exploded perspective view of the antenna holder. It is a sectional view cut along the figure AA' line. In the figure, 1 is a rod antenna, 11 is an antenna part, 12
1 is a first bearing part, 13 is a second bearing part, 14 is a fixed part, 2 is an antenna holder, 21 is a hold part, 22 is an antenna mounting part, 23 is a lug terminal mounting part, 24 is a flange part, 3 is a lug terminal , 4 is a mounting screw, 5 is a chassis, 6 is a printed wiring board, and 7 is a screw.

Claims (1)

[Scope of utility model registration request] The holding part that holds the rod antenna and the rod antenna
It has an antenna holder made of synthetic resin and has an antenna mounting part with a rectangular cross section that holds a fixing part of the antenna with a rectangular cross section, and the antenna holder is attached to the chassis and attached to the antenna holder together with a lug terminal connected to the antenna terminal of the device. The rod antenna is electrically insulated and attached to the chassis by screwing the fixed part of the held rod antenna to the antenna holder, and the rod antenna and the antenna terminal are electrically connected. antenna.