JPS6330128Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection device for a feeder line mainly used in antenna-related equipment, and includes a first terminal to which a core wire of a coaxial cable is connected, and a connection device installed on both sides of this terminal. The coaxial cable and the feeder can be easily connected to a connecting portion having second and third terminals to which the core wire of the feeder wire is connected.

As shown in FIGS. 1 to 5, a conventional device of this kind integrates a female threaded portion 1, a terminal fitting 4 having a pair of side walls 2, 2' and a pair of legs 3, 3', and a male screw 5. The three terminal fittings 4 are first arranged adjacent to each other, and the legs 3, 3' are inserted into the printed circuit board 7 and soldered. is fixed to a printed circuit board 7, and the seat screw 6 is attached to the terminal fitting 4 by screwing the male thread 5 and the female thread 1 together.

The center terminal fitting 4 and seat screw 6 are used as connection terminals for the core wire of the coaxial cable 8, and the terminal fittings 4 and seat screws 6 on both sides are used as connection terminals for the core wire of the feeder wire 9. , seat screw 6
Insert the core wire between the terminal fitting 4 and the seat screw 6.
The core wires were connected by tightening the male screw 5.

Here, 10 is a holder, which is attached to a terminal fitting (not shown) with screws 11, and holds the coaxial cable 8 or feeder wire 9 between them, and in the case of the coaxial cable 8, the outer conductor is connected to the terminal fitting. It connects to the

However, this connection device has the following drawbacks. First, the width H of the feeder line 9 and the feeder line 9
The width H' of the terminal fittings 4 on both sides to which is connected is H
Because of the relationship <H', when connecting the feeder wire 9, the core wire of the feeder wire 9 must be spread widely in both directions when connecting to the connection terminal, which is a disadvantage in that the installation workability is poor. Second, the distance between the central cable connection terminal and the feeder connection terminals on both sides must be wide enough so that they do not come into contact with each other, which requires a large amount of space. Thirdly, in this device, there is a strong possibility that the ground wire (sheath conductor) of the coaxial cable 8 will come into contact with the connection terminal of the feeder wire 9, causing performance problems.

The present invention eliminates the above-mentioned conventional drawbacks. An example of this will be described below with reference to FIGS. 6 to 12.

In this embodiment, an insulating base 21 made of a resin molded product is provided separately from the printed circuit board 20.
1, four side walls 22, 23, 24, 25 are integrally provided in parallel and protruding from each other. The side wall 24 is made to protrude more than the others. On the other hand, the structure is slightly different from the conventional terminal fitting 4, and the terminal fitting 28 has only a pair of legs 26, 26' and a female screw 27, and a male screw 29.
A seat screw 30 having an integral seat is provided, and the terminal fitting 28 is connected between the side walls 22 and 23 and between the side walls 23 and 2.
4 and between the side walls 24 and 25, and their legs 26 and 26' are inserted into the printed circuit board 20 via the insulating base 21 and fixed by soldering. Thereby, the insulating base 21 is fixed to the printed circuit board 20 at the same time.

Then, the seat screw 30 is screwed into the terminal fitting 28. At this time, each side wall 22, 23, 24,
25 prevents the seat screw 30 from rotating.

Further, by deforming a part of the side walls 23 and 24, the distance H' between the insertion openings of the side walls 23 and 24 is changed to H relative to the width H of the feeder wire 31 so that the feeder wire 31 can be inserted easily. The relationship is set so that ′<H. Therefore, when inserting the feeder wire 31, the core wire of the feeder wire 31 is guided by the protrusions 23 and 24, and is smoothly inserted between the terminal fitting 28 and the seat screw 30. Of course, in this case, the male screw 29 of the seat screw 30 is loosened in advance. Needless to say, the feeder wire 31 and the coaxial cable 32 are connected in the same manner as in the prior art, with the coaxial cable 32 being connected to the central connection terminal, and the feeder wire 31 being connected to the connection terminals on both sides.

On the other hand, when inserting and connecting the coaxial cable 32, as shown in FIG. 7 and FIG. By setting l<L'<L with respect to the diameter l of the sheathing part, the coaxial cable 32 can be smoothly guided to the central connection terminal with the conductor exposed. Furthermore, because of the relationship L'<L, there is no risk that the outer conductor, which is the ground wire of the coaxial cable 32, will collide with the protruding side wall 24 and come into contact with the connection terminals for the feeders on both sides. Further, by forming the side walls 23 and 24 between the respective connecting terminals, the interval between the respective connecting terminals can be reduced, which is advantageous in terms of space.

In the above embodiment, the insulating base 21 is formed separately because it is mounted on a printed circuit board, but when a mounting plate made of a resin molded product is used instead of the printed circuit board, each side wall 22, 23, 24, 25 may be formed integrally with the mounting plate. In addition, in FIG. 6, 33 and 34 are the holders 1 explained in FIG.
0, a holder and a terminal fitting corresponding to the terminal fitting (not shown).

As explained above, according to the present invention, a plurality of side walls are provided which have a function of insulating each connection terminal and preventing rotation of the seat screw, and at least one of the side walls is made to protrude from the others. This makes it possible to improve the workability of inserting and connecting the feeder line, and eliminates the risk of the coaxial cable coming into contact with the feeder connection terminal, which has extremely great practical value.

[Brief explanation of drawings]

Figure 1 is a front view of a conventional feeder connection device, Figure 2
The figure is a cross-sectional view taken along line A-A' in Figure 1, Figure 3 is a cross-sectional view taken along line B-B' in Figure 1, and Figures 4 a, b, and c are plan views of terminal fittings used in the device. , side view, front view, Figures 5a, b, and c are plan views, side views, and front views of the seat screws in the same device, and Figure 6 is a perspective view of the feeder line connecting device in one embodiment of the present invention. , FIG. 7 is a front view of the same device, FIG. 8 is a cross-sectional view taken along line A-A' in FIG. 7, FIG. 9 is a cross-sectional view taken along line B-B' in FIG. 7, and FIGS. 10 a, b, c is a plan view and a side view of the seat screw;
A front view, FIGS. 11a, b, and c are a plan view, a side view, and a front view of a terminal fitting, and FIG. 12 is a diagram showing a coaxial cable. 20...Substrate, 21...Insulating base, 22,2
3, 24, 25... side wall, 26, 26'... leg,
27...Female thread part, 28...Terminal fitting, 29...
Male thread, 30...screw with seat, 31...feeder wire, 32...coaxial cable.

Claims (1)

[Scope of utility model registration request] Three sets of seat screws and terminal fittings each having a threaded portion into which these screws are screwed are provided, and these seat screws and terminal fittings are installed in parallel with each other at intervals, and each of the seat screws and each terminal fitting is Side walls made of insulating material are provided on both sides, the seat screws and terminal fittings on both sides serve as connection terminals for the feeder, and the seat screws and terminal fittings in the center serve as connection terminals for the coaxial cable. A power supply line connecting device in which at least one of the respective side walls is made to protrude more than the other, and these inner side walls also serve as an insertion guide wall for each of the power supply lines.