JPS6340893Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for fixing a rod antenna to a mounting plate such as a chassis of a radio set.

Conventionally, the one shown in FIG. 1 has been generally used as a rod antenna mounting device as described above. This mounting device is provided with a collar 3 on the outer periphery of a base metal fitting 2 connected to the lower end of a base pole 1 of the telescoping antenna, and a screw 2a formed below this collar 3, and a screw 2a formed below the collar 3 of the base metal fitting 2 is attached to the radio. It was inserted into a hole 5 in a mounting plate 4 of a set chassis, etc., and a nut 6 was tightened onto the screw 2a from inside the chassis. Additionally, in the past, there were some that had a collar on the bottom and a screw on the top, contrary to the one in Figure 1, and the base metal fitting was inserted into the hole in the mounting plate from below, and the nut was tightened onto the screw from above. .

However, with these antenna mounting devices, the nut is tightened to the base metal fitting, which makes assembly work cumbersome, and if the nut comes off due to loosening of the screw, especially if the nut is inside the chassis, the nut may fall and cause electrical damage. The drawback was that it could cause serious accidents.

The present invention is an attempt to eliminate the drawbacks of the conventional mounting device described above. A plurality of engaging protrusions are provided on the distal end surface of the flange provided on the support tube that supports the antenna element, and these protrusions allow the distal end to be A clamping piece is provided on the outer circumferential surface of the support tube with the position shifted to the side in the circumferential direction, and the clamping piece is inserted into a locking groove provided on the outside of a circular hole formed in a mounting plate of a chassis, etc. Due to the relative rotation between the mounting plate and the flange, the mounting plate is clamped between the collar and the clamping piece to prevent axial displacement of the support cylinder, and the engagement protrusion and the locking groove of the hole are engaged. By preventing rotation of the support cylinder, work efficiency is improved.
Moreover, it is an object of the present invention to provide a rod antenna mounting device that can fix a rod antenna to a mounting plate without fear of loosening.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIGS. 2 to 4, reference numeral 11 indicates a telescopic rod antenna, and this antenna 11
A base pole 12 of the antenna element is fitted into a support tube 13 so as to be movable in the axial direction. The support tube 13 is composed of an integrally molded synthetic resin product.
On the outer periphery of 3, there is a wrench hook part 14 which is flatly cut out on both sides of the large diameter part, a flange 16 which has two engaging protrusions 15 formed facing each other on the end face, and a collar 16 that is connected to the protrusions 15 in the circumferential direction. Two clamping pieces 17, which are formed at positions shifted by approximately 90 degrees from each other, are integrally provided in sequence from the distal end side to the distal end side. The engagement protrusion 15 is formed into an inverted trapezoid with slopes at both circumferential ends of the support tube 13, and the clamping piece 17 has an inclined surface 17a formed at one circumferential end side of the support tube 13. Further, the distance L between the end surface of the collar 16 and the front end surface of the clamping piece 17 is formed to be slightly smaller than the thickness t (see FIG. 6a) of the mounting plate 18 like the chassis of the radio set. end face and clamping piece 17
The distance 1 from the tip end surface of the collar 16 is approximately equal to the thickness t of the mounting plate 18 minus the amount of elastic deformation of the end surface of the collar 16 toward the tip end.

Further, the lower end surface 13a of the support tube 13 is provided with an inclination, and the upper end portion of the lower end surface 13a has a two-stage engagement groove 13.
b is formed. A base metal fitting 19 is caulked and fixed to the lower end of the base pole 12, and a base metal fitting 21 is connected to the base metal fitting 19 with a shaft 20.
A rotating ring 22 for generating antenna rotation torque is attached to the lower end of the ring 22, and a locking protrusion 23 is removably locked in the two-stage engaging groove 13b.
is installed protrudingly. Further, a power supply lug 24 is provided on the outer periphery of the support tube 13. As shown in FIG. 5, the power supply lug 24 has a cylindrical elastic plate 24a having a cutaway part in the axial direction of the support cylinder 13. The elastic plate 24a
serves to guide the sliding movement of the base pole 12, hold it during extension, and supply power. Note that the power supply lug 24 is constructed by punching and molding a single metal plate.

The mounting plate 18 is integrally formed with a circular hole 18a and a locking groove portion 18b that protrudes outwardly and faces the circular hole 18a.

In order to fix the rod antenna 11 constructed as described above to the mounting plate 18, the engaging groove 18b of the mounting plate 18 and the supporting tube 13 are inserted into each other as shown in FIG.
Then, the support tube 1 is inserted from above by aligning the clamping piece 17 of the support tube 1 with the clamping piece 17 of the support tube 1 from above.
3 is inserted into the circular hole 18a, and the clamping piece 17 is inserted into the locking groove portion 18b.
As shown in FIG. 6a,
The engaging projection 15 of the support cylinder 13 is supported on the mounting plate 18. Next, a spanner 25 as shown by the chain line in FIG. 4 is hooked on the spanner hook 14 of the support cylinder 13, and the support cylinder 13 is rotated 90 degrees relative to the mounting plate 18.
The clamping piece 17 is guided by the inclined surface 17a and enters the rear side of the mounting plate 18, and the flange 16 of the support tube 13 is elastically deformed upward, passing through a position where the clamping piece 17 abuts against the lower surface of the mounting plate 18, and reaching the state shown in FIG.
The support tube 16 and the clamping piece 17 clamp the mounting plate 18 to hold the support tube 1
The axial displacement of the support cylinder 13 is prevented, and the engaging projection 15 engages with the engaging groove portion 18b of the mounting plate 18, so that the support cylinder 1
6a, 6b, and 6c show the mounting plate 18 rotated, but in practice it is common for the rod antenna 11 to rotate.

The rod antenna 11 fixed to the mounting plate 18 as described above can be pulled out and tilted about the shaft 20 as shown in FIG. The locking protrusion 2 of the rotating ring 22 is guided by the lower stage of the two-stage engagement groove 13b whose lower stage is rounded.
3 is locked to the upper stage of the rod antenna, and generates torque when the rod antenna rotates.

In the above-mentioned embodiment, almost the entire rod antenna housed in a set such as a radio is pulled out and used, but the mounting device of the present invention can be used for a projecting type rod antenna that is not housed in a set. It can be widely applied to different types of rod antennas.

As explained above, the rod antenna mounting device of the present invention can fix the support tube to the mounting plate by simply pressing the support tube against the circular hole and locking groove of the mounting plate and rotating the support tube by the required angle of 180 degrees or less. This makes it easier to assemble, and in the installed state, the clamping piece on the support tube's collar not only clamps the mounting plate to prevent the support tube from moving in the axial direction, but also prevents the support tube from moving in the axial direction. Since the provided locking protrusion is engaged with the locking groove of the mounting plate to prevent rotation of the support tube, there is no possibility that the fixation of the rod antenna will loosen.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing a conventional rod antenna mounting device, Fig. 2 is a front view of a rod antenna according to an embodiment of the present invention, Fig. 3 is a side view of the base of the rod antenna, and Fig. 4 is an embodiment of the present invention. FIG. 5 is a perspective view of the power supply lug, and FIGS. 6 a, b, and c are explanations of the operation in different states showing the rod antenna installation procedure. It is a diagram. 11... Rod antenna, 12... Base pole,
13...Support tube, 14...Spanner hook part, 15...
Engaging protrusion, 16... collar, 17... clamping piece, 18...
...Mounting plate, 18a...circular hole, 18b...locking groove.

Claims (1)

[Scope of utility model registration request] A plurality of engagement protrusions are provided on the distal end surface of a flange provided on the support tube that supports the antenna element, and a clamping piece is disposed on the distal side from the engagement protrusions on the outer peripheral surface of the support tube and is shifted in position from these protrusions in the circumferential direction. The mounting plate is provided with a circular hole through which the support cylinder is passed, and a locking groove portion on the outside thereof through which the clamping piece can pass, so that the mounting plate is clamped between the collar of the support cylinder and the clamping piece, and an engaging protrusion is formed on the mounting plate. 1. A rod antenna mounting device characterized in that the support cylinder is prevented from rotating by being engaged with a locking groove.