JPS6342727Y2 - - Google Patents

Description

[Detailed description of the invention] This invention enables the UHF antenna to be set in the direction of a desired station with respect to one antenna, for example, the VHF antenna, in two types of antennas with different directions of arrival of radio waves, for example, VHF and UHF antennas. The present invention relates to a station direction adjustment fitting for an antenna.

For example, as shown in FIG. 1, a conventional antenna station direction adjustment fitting includes a pair of sector-shaped fittings 4 (the figure shows an upper sector-shaped For example, attach the antenna arm 5 of a VHF antenna to the base of the
Attach the base of the two bolts 6 and nuts (not shown).
and the antenna arm 7 of the UHF antenna is
The base end of the antenna arm 5 is rotatably mounted on a support shaft 1 at a position slightly apart from the base end of the antenna arm 5. When the antenna arm 7 is rotated and oriented in a desired direction, its protrusion 8 extends into the recess of the fan-shaped metal fitting 4. Insert into 2,
It was fixed to the pair of sector-shaped metal fittings 4 with bolts 9 and nuts (not shown) inserted through the arcuate groove 3 of the pair of sector-shaped metal fittings 4 and the antenna arm 7.

That is, the conventional product requires many connecting parts such as the fixing bolts 6, 6 and nuts, the pivot shaft 1 of the antenna arm 7, the fixing bolt 9 and nuts, and therefore takes time to assemble and disassemble. Furthermore, since the antenna arm 5 is clamped and fixed to the pair of fan-shaped fittings 4, when the antenna arm 7 is turned, the recess 2 of the sector-shaped fitting 4 remains engaged with the protrusion 8 of the antenna arm 7, so that the rotation can be made smoothly. I can't.
Furthermore, it is impossible to set the antenna arm rotation angle to 360° because the outer side of the arcuate groove 3 is missing, and even if the antenna arm rotation angle is smaller than 360°, both antenna arms 5 and 7 can be rotated on the same plane. In order to
The drawback was that the angle of rotation was limited due to interference with the antenna elements.

This invention was made in view of the above points,
To provide a station direction adjustment fitting for an antenna which can be easily and quickly assembled and disassembled with a minimum number of connecting parts, and which can turn the antenna arm 360 degrees so that the antenna arm can be set in a desired direction.

In order to achieve this object, the antenna station direction adjusting fitting according to the present invention includes two connecting fittings each having an antenna arm receiving portion, and two connecting fittings with the antenna arm receiving portions facing oppositely to each other, and an antenna arm. It consists of a set of locking bolts and nuts that are inserted into two antenna arms that fit into the receiving part, and one of the connecting fittings has multiple locking holes or protrusions on the circumference around the locking bolt insertion hole. A plurality of protrusions or locking holes are formed in the other connecting metal fitting around the locking bolt insertion hole to engage with the locking holes or protrusions of one of the connecting metal fittings.

Embodiments of the present invention will be described below based on the drawings. In FIG. 2, 11 is an antenna arm 12
A bolt hole 14 is bored in the center of the antenna arm receiving part 13, which has a fitting surface that conforms to the shape of the outer circumferential surface of the antenna arm receiving part 13, and a protrusion 15 is provided on the outer circumferential surface side at a position a predetermined distance R from the bolt hole 14. 15 is a connecting fitting with a protrusion. Another connecting fitting 16 facing this connecting fitting 11 is provided with a spring chamber 19 for housing a coil spring 18 and a bolt hole 20 in the center of a disc portion 17, and further has a radius of about the axis of the bolt hole 20. Both protrusions 1 are arranged on the circumference at a predetermined interval R.
A large number of locking holes 21 that can be engaged with the antenna arms 5 and 15 are bored in the disc part 17, and a U-groove (a round hole may also be used) for fitting a pair of antenna arm receiving parts, in this example, the antenna arm 24. ) are formed by bending a pair of bifurcated portions 23, 23 parallel to the protruding direction of the recessed portion 19. 25 is an L-shaped locking bolt,
Insert the two long and short parallel shaft parts 28 and 43 into the two holes 26 and 27 of the antenna arm 12, and attach the connecting fitting 11 to the long shaft part 28 protruding from the antenna arm 12.
bolt hole 14, coil spring 18, connection fitting 16
and the bolt hole 44 of the antenna arm 24, and then attach the nut 29 to the lower end.

Another embodiment shown in FIG. 3 uses a connecting fitting 30 having the same structure as the flat plate-like connecting fitting 16 in FIG. 2 in place of the gutter-shaped connecting fitting 11 in FIG. Connection fitting 31 facing connection fitting 30
has the same structure as the connecting fitting 30 except that a protrusion 38 that fits into the locking hole 37 is provided protrudingly at a portion corresponding to the locking hole 37 of the connecting fitting 30. That is, the connecting fittings 30 and 31 have a spring chamber 35 for housing the coil spring 34 and a bolt hole 36 in the center of the flat plate part 32, and a pair of antenna arm receiving parts, in this embodiment, on the outer periphery of the flat plate part 32. antenna arm 12, 24
A pair of bifurcated portions 33, 33 having a U groove (which may be a round hole) for fitting the spring chamber 35 is formed by bending parallel to the direction in which the spring chamber 35 protrudes.

The locking bolt 25, coil spring 34, and nut 29 have the same structure as shown in FIG. or,
The embodiment shown in Fig. 3 is slightly different from the embodiment shown in Fig. 2 in the number of protrusions and locking holes in the fitted state when both connecting fittings are connected, and in the fitted state of the antenna arm and the connecting fitting. However, the attachment/detachment and rotation operations of the antenna arm are the same as in the embodiment shown in FIG. 2, which will be described later.

The local direction adjustment fitting for antenna according to the present invention consists of two connecting fittings that are fitted into the antenna arm, and a set of locking bolts and nuts. In this embodiment, the locking bolt 25 is L-shaped and is prevented from rotating by inserting its long and short parallel shaft portions into the two holes 26 and 27 of the antenna arm 12. but,
The locking bolt referred to in the present invention is not limited to this embodiment. For example, a bolt head having a square head or other non-circular cross section may be locked by a locking portion provided on the antenna arm 12.

Next, a method of attaching the antenna arm 24 of the UHF antenna 42 to the antenna arm 12 of the VHF antenna 40 attached to the antenna mast 39 shown in FIGS. 4 and 5 will be explained using the method shown in FIG. 2. In FIG. 2, locking bolts 2 are inserted into two holes 26 and 27 of the antenna arm 12 on the fixed side.
Insert the two long and short parallel shaft parts 28 and 43 of 5 into the shaft part 28 that protrudes downward.
bolt hole 14, coil spring 18, connection fitting 16
bolt hole 20, fork part 23, 2 of connecting fitting 16
3, the bolt holes 44 of the antenna arm 24 fitted in the antenna arm 24 are sequentially inserted, and the nut 29 is attached to the lower end.The connecting fitting 11 is fitted to the lower surface of the antenna arm 12 at the antenna arm receiving part 13, and the connecting fitting 16 is inserted into the pair of forked holes. The part 23 is fitted onto the antenna arm 24 and the nut 29 is tightened. In this case, the locking bolt 25
does not rotate because the long and short parallel shaft portions 28, 43 are inserted into the two holes 26, 27 of the antenna arm 12, and the connecting fitting 11 also fits into the lower surface of the antenna arm 12, so it does not rotate. Then, the antenna arm 24 is connected to the connecting fitting 11 and the bifurcated portion 23.
The antenna arm 24 is integrally connected to the antenna arm 12 via the connecting fittings 16 and 11 because the connecting fitting 16 is fitted into the two protrusions 15 and the two holes 21. Become.

To set the antenna arm 24 in the direction in which the radio waves arrive, first loosen the nut 29 until the hole 21 of the connecting fitting 16 separates from the protrusion 15 of the connecting fitting 11. In this embodiment, the connecting fittings 11 and 1
Since a coil spring 18 is interposed between 6 and 6, when the nut 29 is loosened, the coupling fitting 16 is automatically separated from 11 by the urging force of the coil spring. next,
Under this condition, the antenna arm 24 fitted into the connecting fitting 16 is turned to a position facing directly to the radio wave arrival direction. Then, by positioning the locking hole 21 of the connecting fitting 16 directly under the protrusion 15 of the connecting fitting 11 and tightening the nut 29, the antenna arms 12, 2
4 are integrally connected via the connecting fittings 11 and 16 by fitting the protrusion 15 and the locking hole 21, and the setting in the local direction is completed. In addition, the antenna arm 24 is
Since the connecting fittings 11 and 16 are rotated while being separated, there is no engagement between the protrusion 15 of the connecting fitting 11 and the locking hole 21 of the connecting fitting 16, so that a smooth turning operation can be obtained.

Next, in FIGS. 4 and 5, in order to adjust both the UHF antenna 42 and the VHF antenna 40 in the station direction, first rotate the VHF antenna 40 around the antenna mast 39 and select the station direction. Once set, the UHF antenna 42 is adjusted using the adjustment method described above.

Since the present invention is configured as described above, it produces the following effects.

(1) Two antenna arms and two connecting fittings in one
Since they are removably connected with a set of bolts and nuts, the antenna station direction adjustment fitting can be assembled and disassembled easily and quickly.

(2) One of the connecting metal fittings has a large number of locking holes or protrusions formed on the circumference of the flat plate part that engage with the plurality of locking holes or locking holes of the other connecting metal fitting, and both of the connecting metal fittings have Since the rotation planes of the two antenna arms to be attached are different, there is no interference between the elements of both antenna arms, and the other antenna arm can be rotated 360 degrees with respect to one antenna arm, allowing the antenna to be set in the desired orientation. can do.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of a conventional product, Figs. 2 and 3 are perspective views for explaining assembly showing an embodiment of the present invention, and Fig. 4 is a local direction adjustment fitting for an antenna according to the present invention. A plan view of the VHF/UHF common antenna with the attached antenna, and FIG. 5 is a side view of the same. 11, 16, 30, 31...Connection fittings, 12,
24... Antenna arm, 13, 23, 33...
Antenna arm receiving part, 14, 20, 36... Locking bolt insertion hole, 15, 38... Projection, 21, 3
7... Locking hole, 25... Locking bolt, 29... Nut.

Claims (1)

[Scope of utility model registration request] Antenna arm receiving part 13, 33, 23, 33
Two connecting fittings 11, 30, 16, 31 having
and antenna arm receiving parts 13, 33, 23, 3
Both connecting fittings 11, 30, 1 with 3 in opposite directions
6, 31 and antenna arm receiving part 13, 33,
Two antenna arms 12 that fit into 23, 33,
A set of locking bolts 25 and nuts 2 inserted into 24
9, a plurality of locking holes 21 or protrusions 38 are formed on the circumference around the locking bolt insertion holes 20, 36 in one of the connecting fittings 16, 31, and the other connecting fittings 11, 30 has a locking bolt insertion hole 14,
A plurality of protrusions 1 that engage with the locking holes 21 or protrusions 38 of one of the connecting fittings 16, 31 with 36 as the center
5 or a locking hole 37.