JPS6134730Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a support device for a sliding antenna that is attached to the fender of an automobile and used for wireless communication. Conventionally, most antennas that are attached to the fender of an automobile and used for wireless communication have an antenna element. It had a structure in which a coaxial connector was provided at the base, and it could be removed from the vehicle body by attaching and detaching the coaxial connector. In addition, the sliding type antenna that could be pushed into the car body and slidably stored therein had a structure in which pipes were stacked in multiple stages, similar to what is known as a rod antenna for a car radio. However, in all of these antennas, the base of the antenna element is fixed with a coaxial connector or a tightening nut, and since there is no lateral movement at all, they are extremely vulnerable to lateral impacts.

FIG. 3 is a diagram showing an example of the configuration of the above-mentioned conventional sliding antenna.

In the figure, 1 is a part of the fender of a car, 2
3 is a support main pillar, 3 is an antenna element, 4 is a screw portion, and 5 to 9 are bushings. As described above, this antenna is attached to the fender 1 by screwing the tightening nut 14 onto the threaded portion 4 via the bushings 5 to 9, and the base of the antenna element 3 is fixed. For this reason, the antenna element may be subject to a lateral impact when it hits a twig or the like while driving, or may break when it gets caught on a ceiling or the like when parked in a garage.

An object of the present invention is to provide a support device for a movable sliding antenna that can prevent breakage even if an impact force is applied to the antenna element.

In order to achieve the above object, the mobile sliding antenna support device according to the present invention is tightened through a bushing to a threaded part provided at the upper end of the main support column that houses the antenna element whose lower end is connected to a cable. In a support device for a sliding antenna used for wireless communication that can be attached to the fender of an automobile by screwing a nut, the tightening nut secures the lower end of the antenna element from the outside when the antenna element is pulled up. It consists of a mount that has a flexible portion that encloses it in a hermetically sealed manner.

According to the above configuration, when a lateral force is applied to the antenna element, the flexible portion of the mount bends, so the antenna can be protected from accidents such as breakage, and the purpose of the present invention is completely achieved. be able to.

Hereinafter, the present invention will be explained in more detail with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a main part of an embodiment of an antenna support device according to the present invention. In the figure, the parts designated by the same reference numerals as those in FIG. 3 described above are no different from the conventional example.

The sliding antenna element 3 of this embodiment is housed within the main support column 2 of pipe structure. The main support pillar 2 is fixed at a predetermined position on the automobile fender part 1 by a threaded part 4 provided at the upper end of the main pillar 2 and a mount 11 screwed into the threaded part 4. For example, bushings 5, 6, 7, which are similar to those commonly used in car radios, etc., can be used to fix the fender part 1 vertically even if the mounting position is inclined.
This is done via 8 and 9. The mount 11 of this embodiment has a cylindrical shape with a slightly smaller diameter at its upper end, and its middle portion is formed of a flexible member 10 such as rubber or soft plastic. A lower end 12 of an antenna element to which a cable is connected can be accommodated inside the flexible portion 10 of this mount 11.

As is clear from the figure, the inside of this flexible portion 10 has a sealed structure, and the lower end of the antenna element 1
2 is guided by the inner wall of the flexible portion 10 and can smoothly move up and down.

Furthermore, even if exposed to rainwater, water will not enter the base of the antenna since it has a sealed structure.

Since this embodiment has the above-described configuration, when the antenna element 3 is pulled up, the lower end 12 of the antenna element enters the upper part of the mount 11 and can be bent as shown by the two-dot chain line at the flexible portion of the mount 11.

Note that even when the lower end 12 of the antenna element is bent in this manner, it can smoothly move up and down without getting caught.

FIG. 2 shows another embodiment of the present invention, in which a coil spring 13 is used in the flexible portion of the mount 11. In this embodiment, as in the previous embodiment, the lower end 12 of the antenna element enters into the flexible portion 10 and can be bent by the coil spring 13 portion.

As explained above, in the antenna support device according to the present invention, the mount for fixing the base of the antenna element has a flexible part that is sealed from the outside, and when the antenna element is pulled out to the flexible part of the mount, the antenna Since the mount can be bent by housing the lower end of the element, it is possible to protect the antenna element from unexpected impact force while driving and prevent accidents such as breakage.

In addition, since the flexible part of the mount has a sealed structure from the outside, it is possible to prevent rainwater etc. from entering from the antenna base, and the inner wall of the flexible part of the sealed structure allows smooth vertical movement of the antenna element base. This has the effect of acting as a guide for the students.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of the main parts showing one embodiment of the support device for a mobile sliding antenna according to the present invention, and FIG.
The figure is a vertical sectional view of the main part showing another embodiment of the present invention.
FIG. 3 is an exploded perspective view of a conventional sliding antenna support device. 1...Fender mounting part, 2...Main support pillar, 3...
...Antenna element, 4...Threaded part, 5, 6,
7, 8, 9... Bushing, 10... Flexible portion, 11... Mount, 12... Lower end of antenna element, 13... Coil spring, 14... Tightening nut.

Claims (1)

[Scope of utility model registration request] It is attached to the fender part of an automobile by screwing a tightening nut 14 through bushings 5 to 9 to a threaded part 4 provided at the upper end of a main support column 2 that houses an antenna element 3 whose lower end 12 is connected to a cable. In a possible support device for a sliding antenna used for wireless communication, the tightening nut 14
A mobile sliding antenna comprising a mount 11 having a flexible portion 10 that accommodates the lower end 12 of the antenna element in a sealed state from the outside when the antenna element 3 is pulled up. Support device.