JPS6033613Y2 - Antenna power supply board fixing structure - Google Patents

Description

[Detailed description of the invention] This invention relates to a commonly known feeding section of an antenna, and more specifically, to a structure used when fixing a board provided inside a feeding box in a feeding section to a feeding box. It is something.

The purpose of the present invention is to achieve fixation between the contact piece provided along the inner wall surface of the hole for plug insertion in the feeder box and the above-mentioned board with a simple structure using the above-mentioned contact piece. The purpose is to provide structure.

The drawings showing the embodiments of the present application will be described below.

In the antenna power feeding section A, 1 is a power feeding box, which is composed of a main body 2 and a lid 2' which is screwed onto the upper opening of the main body 2 in a well-known manner, and each of which is integrally formed using a synthetic resin material. .

3, 3a are mounting parts 4, 4 formed on both sides of the main body 2.
and 4a, a width pair element with both ends attached to 4a, which is formed into a folded pole shape as is well known, and is configured to be able to receive VHF signals in television broadcasting, for example.

In the main body 2, 5 is a trap connected between one end of the elements 3 and 3a, 6 and 6a are power supply terminals respectively connected to the other end, and 7 is a board for electrical elements. For example, it is equipped with a mixing circuit that mixes UHF and VHF signals, which are commonly known.
As is well known, a connection terminal portion 9 is configured to mechanically and electrically connect a coaxial cable inserted into the main body 2 and serving as a power supply line for supplying signals to the television receiver.
is a well-known matching device which is interposed and connected between the output end 10° 10 of the above-mentioned mixing circuit and the core wire terminal 8' and the ground terminal 8'' in the connection terminal section 8 so as to match them. show.

As the board 7, a printed circuit board having an insulating plate and a copper foil for forming a printed circuit is usually used, and input terminals 11a and lla of - in the mixed circuit of the board 7 are connected to the power supply terminals 6 and 6a, respectively. and the other input end 11b
, llb are configured to be connected to a feeder line from a UHF antenna (not shown), as will be described later.

Further, in the connection terminal portion 8, 8a is a feeder line receiving wall that is formed upright from the main body 2 and holds the terminals 8', 8'', 8b is a holding tool, and 8c is a tightening screw.

Next, reference numeral 12 denotes a plug insertion hole formed with an opening 12' on the lower surface of the main body 2, which is formed so as to allow insertion and removal of a plug insertion portion to be described later, and its inner shape is circular. , formed into any shape such as a square.

Reference numeral 13.13 indicates a hook-shaped hook groove formed to face the inner wall surface of the opening 12' of the hole.

Reference numerals 14 and 14 denote contact pieces provided on the inner wall surface 12'' of the hole 12 at positions corresponding to the hooking grooves 13, 13, respectively, and are made of a thin metal plate having conductivity and elasticity.

The middle portions of these contact pieces 14 are bent so as to protrude toward the center from the inner wall of the plug insertion hole 12, and the lower ends of each can be hooked to the opening side of the inner wall surface of the hole 12. For example, the hooking portions 14a are bent outward in a hook shape so as to be hooked in the groove 11.

Further, these contact pieces 14 constitute, for example, balanced terminals, and have upper ends 14b, 14b introduced into the box 1, respectively.
are the other input terminals 11b, llb in the mixing circuit
It is connected to.

Reference numerals 15 and 15 refer to a raised portion 2a which is a part of the main body 2 formed into a raised shape and has the hole 12 for inserting the plug formed therein.
In the substrate 7 placed on the raised portion 2a, the contact piece introduction holes 16.16 formed to communicate the hole 12 with the inside of the box 1 can be superimposed on the holes 15.15, respectively. The input ends 11b, llb of the circuit are located at the edges of the through holes 16, 16, respectively.

Reference numeral 17 denotes an annular waterproof groove formed around the hole 12, into which a waterproof cover (not shown) can be inserted into the hole 12 after the plug is installed.
It is designed so that it can be fitted on two sides.

Reference numeral 18 denotes a post established by the main body 2, and is designed to fit into a hole 7' formed in the edge of the substrate 7.

Next, the plug 20 will be explained.

Reference numeral 21 denotes a plug body made of a synthetic resin material, and 22 denotes an insertion portion formed in the plug body 21, which is formed so as to be freely inserted into and removed from the plug insertion hole 12 of the box 1.

Reference numeral 23 denotes an insertion hole formed inside the insertion portion 22, in which the tip of the balanced feeder 24 inserted from below, as is generally known, is positioned.

Reference numeral 25 denotes positioning holes provided on both sides of the distal end of the insertion portion 22, so that the plug insertion portion 22 is aligned with the plug insertion hole 1 of the box 1.
When inserted into contact pieces 14 and 14, respectively, they are positioned oppositely in the direction of contact pieces 14 and 14, respectively.

Reference numerals 26 and 26 denote conductive wires of the feeder 24, which are exemplified as conductive parts of the plug, and are respectively protruded from the hole 25 and bent so as to come into contact with the outer surface of the insertion portion 22.

27 is a fastening part formed on the plug body 21, and a fixing member 28
The balance feeder 24 is pressed by 29.29
indicates the screw for tightening.

Reference numeral 30 denotes a mounting screw screwed into the mounting flange 31 of the plug body 21, which is used to fix the plug 20 to the box 1. Next, the mounting of the board 7 to the main body 2 of the power supply box will be explained.

First, the substrate 7 is placed on the upper surface of the raised portion 2a of the main body 2.

In this case, the substrate 7 is positioned by the support 18 fitted in the hole 7', and the through holes 16, 16 of the substrate are placed so as to overlap the holes 15, 15 of the main body 2, respectively.

Next, contact pieces 14, . 14 is inserted through the opening 12' and kept in place.

In this case, one end latching portion 14a of each contact piece 14 is attached to the main body 2.
The other end 14b is made to protrude from the substrate 7 through the overlapping holes 15 and 16.

In this state, if the other end 14b protruding from the board 7 is twisted as shown in FIGS. 1 and 2 using a tool such as pliers (or simply bent onto the board), the other end 14b will be engaged. The substrate 7 is configured as a stop portion, and the substrate 7 is fixed to the main body 2 so as to be stopped toward the hole 12 .

Further, at this time, the contact piece 7 itself is also in a fixed state.

After that, the input terminals 11b and llb of the circuit provided on the board 7
Solder 33.33 is applied between the input ends 11b and the other ends 14b and 14b, respectively, as shown by the two-dot chain line in FIG. Further, power supply terminals 6, 6a and matching box 9 are connected to the other input terminals 11a, 11a and output terminals 10.10, respectively.

Further, by soldering, the board 7 and the contact piece 14 are more firmly fixed.

The board and contact pieces can be assembled in any order, for example, by positioning both contact pieces in advance in the plug insertion hole 12 as described above, and then inserting the board 7 into the plug insertion hole 12. Hole 1
The other end 14b of the contact piece 14 protruding from the hole 15 may be placed on the protrusion 2a and fixed in the hole 15, or the contact pieces 14 may be inserted and fixed on one side respectively. It's okay.

Further, the hooking portion 14a of the contact piece may be hooked on, for example, a hooking groove provided in the middle of the inner wall surface 12'' of the hole 12.

In this case, the groove is preferably located near the opening of the hole 12 from the viewpoint of workability.

Furthermore, one or three or more contact pieces 14 may be provided depending on the number of conductive parts of the plug to be inserted.

Next, the case where the plug 20 is attached to the power supply box 1 will be explained.

First, as shown in FIG. 2, the balanced feeder 24 (from the UHF antenna) to be connected is attached to the plug 20 in advance.

After that, insert the insertion part 22 of the plug body 21 into the antenna power supply part A.
When inserted and fitted into the plug insertion hole 12 of the box 1, the conductors 26, 26 of the feeder are connected to the contact pieces 14, respectively.
14 and is connected to the mixing circuit.

As a result, a UHFgVHF mixed signal can be taken out from the connection terminal section 8 via the mixing circuit and matching box 9.

Note that the contact piece 14.14 is connected to the conductor wire 26.26 of the feeder.
After being slightly pushed away by the plug body 21 against its own elasticity, it is elastically pressed against these conductors 26, 26, so that a reliable electrical connection can always be obtained, and the plug body 21
are temporarily fixed in the fitted state.

After that, the mounting screw 30 of the mounting flange 31 of the plug body 21 is
The plug main body 21 is fixed to the box 1 by screwing it into a mounting hole previously drilled in the bottom surface of the box 1 using a screwdriver.

Thereafter, a waterproof cover is fitted into the waterproof groove 17 to cover the entire plug 20, thereby preventing rainwater etc. from entering the plug portion.

As described above, in the present invention, the plug insertion hole 12
One end 14a of the contact piece 14 provided inside is hooked to a position on the opening side of the inner wall surface of the stopper 12, while the other end 14b of the contact piece 14 is passed through the board 7 to connect the board 7 to the power supply box 1. Since the contact piece 14 is fixed to the plug insertion hole 12 side in a retaining manner, it is necessary to mechanically fix the contact piece 14 to the power supply box 1 and mechanically fix the board 7 to the power supply box 1. This work can be done remotely at the same time using only the above-mentioned contact piece, and as a result, not only can the assembly work efficiency be improved, but also the number of parts can be reduced and the price of the product can be reduced. It has multiple effects such as.

Moreover, the upper end 14b of the contact piece 14 as described above is connected to the hole 15 for introducing the contact piece at the bottom of the hole and the through hole 1 in the substrate 17.
6 and the portion that protrudes upward from there is deformed and locked, which not only makes the work easy, but also allows for reliable and easy visual inspection after work.

Furthermore, as mentioned above, the upper end of the contact piece 14 is fixed,
Moreover, since the hook-shaped hook piece 14a at the lower end is hooked into the hook-shaped hook groove 13, when the plug 20 is inserted into the plug insertion hole 12, when the plug 20 is first inserted, the contact piece 14 is connected to the plug. The plug can be inserted smoothly by preventing the plug from being turned up from the inner wall surface 12'' of the insertion hole 12. Next, during insertion, the contact curved toward the inside of the hole 12 By pushing the middle part of the piece 14 toward the inner wall surface of the hole, the hooking piece 14a is released in the same direction as the direction in which the middle part is pushed, and the middle part is elastically retracted toward the inner wall surface. This allows the plug to enter smoothly, and when the plug is completely inserted, the hooking piece 14a is released by the lateral force as described above and becomes a free end, allowing the intermediate portion to return. Since the intermediate portion is smoothed, the biasing force in the return direction allows the intermediate portion to come into elastic contact with the conductive portion of the plug, which has the effect of achieving a good electrical connection state.

Moreover, even if the contact piece 14 moves as described above,
Its upper end 14b has a hole 1 for plug insertion as described above.
Since it is fixed to the bottom of the hole 2, there is also the effect that when inserting the plug as described above, there is no adverse effect such as lifting the board 7 from the bottom of the hole.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is a partial plan view of the antenna feeding section with the cover removed to show the inside of the feeding box, and Fig. 2 is a cutaway of the main parts of the antenna feeding section and the plug. 1, FIG. 3 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. 4 is an exploded side view showing the state in a partially cutaway manner. A... Antenna power feeding section, 1... Power feeding box, 7... Board, 12... Hole for plug insertion, 14... Contact piece, 14a...Latching part, 14b...Latching part.

Claims (1)

[Scope of utility model registration request] The inside of the power supply box is equipped with a board equipped with electrical components, while a part of the wall of the power supply box is provided with a hole for inserting a plug, and the inside surface of the power supply box at the bottom of the hole is provided with a hole for inserting a plug. The above-mentioned substrate is attached, and furthermore, a contact piece is attached to the inner wall surface of the above-mentioned plug insertion hole, and is made of a conductive material and is formed to be long in the plug insertion direction in the above-mentioned plug insertion hole, and made of a conductive material corresponding to the conductive part of the plug. Moreover, the electrical element on the board and the contact piece are electrically connected, and by inserting the plug into the plug insertion hole, the conductive part of the plug and the electrical element of the board are connected. In the antenna power supply part configured to be connectable, the contact piece is formed of a thin metal plate having conductivity and elasticity, and the intermediate part thereof protrudes inward from the inner wall surface of the plug insertion hole. On the other hand, at the bottom of the plug insertion hole, adjacent to the inner wall surface to which the contact piece is attached, there is a contact piece insertion hole having a width narrower than the width of the middle part of the contact piece. In addition to forming the hole, a through hole is formed in the substrate that overlaps with the hole for introducing the contact piece, and the upper end of the contact piece is narrower than the hole for introducing the contact piece and the through hole. A portion of the hole protruding upward from the through-hole is mechanically deformed and latched to the board, and an opening of the hole for plug insertion in the power supply box is formed and inserted through the holes. A hook-shaped hooking groove is formed at a nearby location, and a hooking piece bent outward into a hook shape is formed at the lower end of the contact piece, so that the hooking piece can be hooked into the hooking groove. A substrate fixing structure for an antenna power feeding section.