JPS58972Y2 - antenna element - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an antenna element attached to an arm.

Previously, antenna elements were widely used as cut pipes or round bars, but these required special tube manufacturing techniques or advanced mechanical forming techniques, and the materials themselves were quite expensive. Ta.

The antenna element of the present invention is formed by bending into a cylindrical shape using a band-shaped plate and is configured in a slit shape, so that the material itself can be easily manufactured and can be provided at a lower cost.

To explain the present invention with reference to drawings, 1 is an antenna element formed by bending the band plate of the present invention into a hanging or cylindrical shape, and when the band plate is bent into a knot shape in the axial direction of the antenna element 1. There is a slit 2 configured as follows.

When mounting this on the arm 3, the antenna element 1 is inserted into the antenna element insertion hole 5 of the bracket 4 as in the mounting embodiment shown in FIG.

The bracket 4 surrounds the antenna element 1 and has a notch 6, so that the antenna element insertion hole 5 can be compressed by tightening a thumbscrew 8 fitted to a male screw 7 that passes through the arm 3 and protrudes from the bracket 4. After a while, antenna element 1 is tightened with a band.

Further, the bracket 4 has a retaining portion 9 that engages with the arm 3, and when the thumbscrew 8 is tightened, the bracket 4 tightens the band on the antenna element 1, and at the same time positions and fixes the antenna element 1 at right angles to the arm 3.

When fixed in this way, the antenna element 1 having the slit 2 of the present invention is band-tightened by the bracket 4, so it is subjected to linear pressure by the gear part of the slit 2, and only this part is compressed and deformed, so the relationship between the bracket 4 and the antenna element 1 is reduced. Fixation is ensured and no misalignment occurs between the bracket 4 and the antenna element 1.

Furthermore, since the antenna element 1 itself has elasticity, it can be prevented from loosening when installed.

In Fig. 2, an example in which the antenna element is attached to the arm using a bracket is explained, but other attachments are not shown as examples, but the antenna element is directly attached to the arm 3 without using a bracket. Even if the antenna element 1 having the slit 2 of the present invention is press-inserted into the hole by drilling a hole with a diameter large enough to close the slit 2 of the antenna element 1, the antenna element 1 can be securely fixed and attached to the arm 4. I can do it.

In addition, as another embodiment (not shown), even if a hole is made in the antenna element 1 of the present invention in a direction perpendicular to the slit 2, a screw is inserted into the hole, and the screw is directly attached to a bracket or the like, the antenna element itself will not be damaged. Due to its deformation and its own elasticity, it acts as a locking mechanism and ensures secure fixation.

As described above, when the antenna element with a slit according to the present invention is attached to a bracket and fixed, the presence of the slit prevents displacement due to deformation of the antenna element itself, and secures fixation due to elasticity.
Even when forming an antenna by drilling a hole in the arm and press-fitting the antenna element into the hole, the antenna element itself can be easily processed after processing due to the slit formed when the band plate is bent into a cylindrical shape. It has the advantage of being able to be directly fixed to the arm using the elasticity of the antenna element itself without the need for a screw, and even when attaching the antenna element of the present invention directly to the bracket with a screw, drill a hole perpendicular to the slit and insert the screw into that hole. By having a slit when attaching it to the bracket through the antenna element, the band-shaped plate is bent into a cylindrical shape, and the elasticity of the plate itself acts on the antenna element to prevent it from loosening.
It has great advantages that are significantly different from conventional antenna elements that use pipes or round bars, and the cost of the material is lower than that of conventional materials, requiring no advanced processing technology. This invention has the great advantage of being able to be supplied at a low cost because it is bent and formed into a cylindrical shape using a band-shaped plate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an antenna element having a slit according to the present invention, and FIG. 2 is an inverted perspective view of the antenna element installed.

Claims (1)

[Scope of utility model registration request] 1. An antenna element, which constitutes an antenna by being attached to an arm, and is characterized in that the antenna element has a slit shape in the axial direction of the antenna element.