JPS6134727Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antenna device, and particularly to an antenna device suitable for simplifying the structure.

Conventionally, as shown in FIG. 1, a base metal fitting 2 is inserted into a guide pipe having an inner flange portion 1a at the upper end, the base metal fitting 2 is pressed by a spring 3, and the lower end of the spring 3 is connected to the lower end of the guide pipe 1. The lower end of the guide fitting 4 is fixed to the base 7 side via the pin 6, and the antenna is attached to the protruding part of the base metal fitting 2 from the guide pipe 1. Antenna devices in which elements are attached are generally known.

However, as mentioned above, this type of antenna device requires a guide fitting in addition to the guide pipe, and the spring is supported by this guide fitting, so the structure becomes complicated and the number of parts increases. However, there are drawbacks such as increased manufacturing man-hours and high costs.

The present invention was devised to solve these conventional problems, and its purpose is to provide an antenna device that can reduce the number of parts and man-hours.

In this invention, as a means of reducing the number of parts and man-hours, the lower end of the spring of the guide pipe is bent inward to support the spring and the lower end of the base metal fitting, which was previously considered indispensable. The guide fittings are omitted.

Hereinafter, the present invention will be explained based on an embodiment shown in FIGS. 2 to 4.

In FIG. 2, reference numeral 11 denotes a guide pipe having an inner flange portion 11a at its upper end opening, and a base metal fitting 12 is disposed inside this guide pipe 11. As shown in FIG. As shown in FIG.
The outer flange part 12b is continuous with the upper end of the guide pipe 11 and is prevented from coming out by contacting the inner flange part 11a, and the mounting part 12c is continuous with the upper end of the outer flange part 12b and projects outward from the guide pipe 11. The lower end of the antenna element 8 is pivotally attached to the mounting portion 12c via a pin 9 so as to be swingable.

A spring 13 is provided around the shaft portion 12a of the base metal fitting 12 to urge the outer flange portion 12b toward the inner flange portion 11a.
The biasing force of the spring 13 allows it to rotate freely while being subjected to resistance a certain number of times. In addition, a rotary washer 1 is attached to the lower end of the spring 13.
As shown in FIG. 3, the rotary washer 15 is supported by a pair of bent deformable portions 11b formed oppositely on both sides of the shaft portion 12a of the guide pipe 11. This bending deformation part 1
1b also supports the lower end of the shaft portion 12a from both sides to prevent the base metal fitting 12 from wobbling due to rotation. As shown in FIG.
It is formed by bending and deforming it inward.

The guide pipe 11 configured in this manner is attached to a cylindrical fixed protrusion 19 protruding from the base body 17, as shown in FIG. Hole 2
It is fixed to the base body 17 side via a pin (not shown) that passes through holes 0 and 21.

When assembling, make sure to
A guide pipe 11 is prepared in which the portion between the circumferential slits 18 of the strip is pressed inward to form a bending deformation portion 11b, and a hole 20 is provided at the lower end of the cylindrical member.

Next, the rotary washer 15, the spring 13, and the base metal fitting 12 are sequentially inserted into the guide pipe 11, and the inner flange portion 11a is bent.
As a result, the lower surface side of the rotary washer 15 is supported by the bending deformation part 11b, and the spring 13 applies rotational resistance to the base metal fitting 12, and the lower end of the shaft part 12a is supported by the bending deformation part 11b, so that the base metal fitting 12 is supported by the bending deformation part 11b. 12 is prevented from wobbling.

Next, the guide pipe 11 is attached to the fixing protrusion 19 and fixed to the base body 17 using pins (not shown) passing through the holes 20 and 21, respectively.

Next, screw 9 into the mounting part 12c of the base metal fitting 12.
The lower end of the antenna element 8 is pivotally connected via the .

In addition, in the above embodiment, two slits 1
Although a case has been described in which the bending deformation portion 11b is formed by punching out the inner side of the guide pipe 11 to the inside of the guide pipe 11, the guide pipe 11 may be bent directly to the inside without providing the slit 18.

Further, in the embodiment, the bending deformation portion 11
Although the description has been given of a case in which the guide pipe 11 is provided at two locations facing each other via the shaft portion 12a, it may be provided at three or more locations, or the guide pipe 11 may be reduced in diameter to form a bent portion.

As described above, according to the present invention, the number of parts is reduced because the guide fittings that were previously required can be omitted, and the process of processing the guide fittings is no longer necessary, reducing the number of man-hours, thereby reducing costs. can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view showing a conventional example, Fig. 2 is a partial sectional view showing an embodiment of the present invention, and Fig. 3 is a partial sectional view showing a conventional example.
FIG. 4 is a side view of the guide pipe showing a method of manufacturing the bent portion. 8... Antenna element, 11... Guide pipe,
11a...Inner flange portion, 11b...Bending deformation portion, 12...Base metal fitting, 12a...Shaft portion, 12b...
...Outer flange part, 12c...Mounting part, 13...Spring, 18...Slit.

Claims (1)

[Claims for Utility Model Registration] 1. A guide pipe having an inner flange portion at the upper part, a base metal fitting rotatably disposed within the guide pipe while being prevented from coming out by the inner flange portion, and a guide pipe of the base metal fitting. An antenna device comprising an antenna element swingably attached to a protrusion from the guide pipe, and a spring provided around a base metal part in a guide pipe,
An antenna device characterized in that a part of the guide pipe at the lower end of the spring is bent inward to form a means for supporting the spring, and a support part for rotatably supporting the lower end of the base metal fitting is also formed. 2. The antenna device according to claim 1, in which the base end of the guide pipe serves as the mounting portion.