JPH0110858Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an adapter that can be used commonly for a power supply line such as a parallel line or coaxial line that connects an input terminal of a television receiver or the like to an antenna.

Conventionally, television receivers, video tape coders,
Parallel wires or coaxial wires are generally used as feeder lines to connect FM receivers, etc. to antennas. The former is electrically balanced to the ground, so it can be connected directly to an antenna and used in relatively good radio conditions, whereas the latter is electrically unbalanced and can be used in situations where amplifiers, distributors, etc. are used. Used in areas with poor radio wave conditions. Therefore, whether it is a parallel line or a coaxial line, an equilibrium/unbalance conversion device must be installed at the connection part with the feeder line that connects to the antenna of a television receiver, etc. Generally, a transformer called a "balun" is used. However, in the conventional balloon, when the power supply line to be used is the coaxial line 1, the coaxial line adapter 4 shown in FIGS. 10 and 11 is used, and when the parallel line 5 is used, the 12th and 13 Adapter 9 for parallel lines shown in the figure
I had to use . This resulted in a large number of parts, each of which had to be used differently depending on the type of wire, which had the disadvantage of being time-consuming.

Also, when using an adapter that can share both, when using a coaxial line, the matching of the transformer deteriorates, so it is necessary to cut part of the transformer circuit, or
When parallel wires are used, there is a drawback that it requires a lot of effort to connect a part of the transformer circuit that is broken. Furthermore, especially when using parallel lines 5, the first
As shown in Figures 2 and 13, the core wire 6 had to be tightened with bolts 7, which had the disadvantage that the installation work was time-consuming.

The present invention eliminates such conventional drawbacks and makes it possible to connect either coaxial lines or parallel lines.In addition, in the case of parallel lines, the core wire of the parallel line is used to connect the lines. This device is characterized in that a part of the circuit of a broken transformer can be connected and fixed at the same time.

An embodiment of the present invention will be described with reference to the drawings. At one end of the upper surface of an upper body 11 made of an insulating material, there is a connecting tube 12 that connects to a connecting terminal section of a television receiver, etc., and a connecting terminal located at the center of this connecting tube. 13 is established, and a U-shaped clamping part 14 is provided at the rear end of the terminal to clamp the core line of the coaxial line. A storage chamber 15 with an open upper part is provided at the other planar end of the upper body 11,
A movable body 17 springed from below by a spring 16 is housed in this accommodation chamber 15. The movable body 17 is made of an insulating material, and has two recesses 18 and 19 formed close to each other in a direction perpendicular to the longitudinal direction of the upper body on both sides of the upper body. recessed part 2
0, parallel recesses 21 and 22 are formed from above in a direction perpendicular to the longitudinal direction of the upper body and perpendicular to and parallel to the recesses 18, 19 and 20.

Reference numeral 23 denotes a terminal board made of a conductive material and having an insertion part 24 of an arbitrary shape formed therein, which is established in the recessed parts 18, 19 and 20, respectively, and is connected to the first and second terminal boards 23a and 23b and one of the recessed parts 21. , also, the third
The core wires 6, 6 of the parallel wires 5 are clamped and fixed between the terminal plate 23c and the other recess 22. Furthermore, fitting grooves 25, 25 into which the lower body 30 is fitted are provided on both sides of the upper body 11.

Reference numeral 26 denotes an interlocking piece that holds the covering portion 1a of the coaxial wire 1, and 27 an interlocking piece that holds the covered wire 2, which are integrally formed and attached to the back surface of the upper body 11. 3
Reference numeral 0 denotes a lower body which is removably fitted to the back surface of the upper body 11 and is made of an insulating material. One end of this lower body is provided with an opening 31 for passing the coaxial line, and the fitting grooves 25, 25 Latching part 3 to be fitted into
2,32 are provided.

Next, the circuit of this device will be explained with reference to FIGS. 6 and 9.
4 is connected to the first terminal plate 23 a by a lead wire 35 , and the other stopper piece 12 a integrated with the connecting tube 12 is connected to the balun transformer 37 by a second lead wire 36 . A second terminal piece 23b provided close to and parallel to the first terminal piece 23a is connected to a balun transformer 37 mounted in the upper body 11 through a lead wire 38. Further, this balun transformer 37 is also connected to the third terminal plate 23c by a lead wire 39, and is also connected to the connecting tube 12.

Next, the operation of this embodiment will be explained.

First, to explain the case of connecting the parallel wires 5, the tips of the parallel wires 5 are treated to expose the core wires 6, 6, and then the movable body 17 is pushed down against the elastic force of the spring 16, and the movable body 17 is pressed down against the elastic force of the spring 16. The bottoms of the recesses 21 and 22 of the body are respectively lowered and the respective insertion portions 24a, 24b and 24c of each terminal board are opened. In this state, insert the parallel core wires 6, 6 into the movable body 17.
When you release your hand, the recesses 21 and 22 of this movable body
and the respective insertion portions 24a, 24b, and 24c of the terminal board. In this case, the first and second terminal plates 23
In a and 23b, since one core wire 6 is clamped and fixed by both terminal plates 23a and 23b, it also has the function of connecting both terminal plates 23a and 23b. Further, the other core wires 6 are simply clamped and fixed to the terminal plate 23c. At the same time as the core wires are connected in this way, matching is adjusted by connecting part of the circuit of the transformer using the core wires. in this case,
When connecting the parallel wires 5, there is no need to remove the lower body 30 from the upper body 11.

Next, the case of connecting the coaxial wire 1 will be explained based on FIGS. 5 and 6. First, the tip of the coaxial wire 1 is treated to expose the core wire 3 and the covered wire 2, respectively. Further, the shaft core wire 3 is press-fitted and held in the holding part 14, and then the bite pieces 26 and 27 are pressed together with pliers (not shown) or the like, so that the covered part 1a and the covered wire 2 are held and fixed. In this case, there is no need to operate the movable body 17 at all, and the first and second terminal plates 23
Since the distances a and 23b remain separated, there is no need to disconnect part of the transformer circuit, and the installation work can be extremely simplified.

As described above, the present invention can be easily installed with either parallel wires or coaxial cables with terminal processing, and since the degree of matching of the balun transformer is set to match the coaxial cable, when parallel wires are used, ,
This device can be used for either parallel or coaxial feed lines, as it is possible to fix the core wires of parallel wires and at the same time connect part of the circuit using these core wires to adjust the degree of matching. Since there is no need to cut or connect a part of the circuit or to tighten bolts to attach the core wire, the connection work is simplified and work errors can be prevented.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention. Figure 1 is a front view of the whole with parallel lines attached with some parts omitted, Figure 2 is a side view of the same, and Figure 3 is a diagram with parallel lines removed. Figure 4 is a cross-sectional view taken along line A-A in Figure 1, Figure 5 is a back view of the upper body with the lower body removed, and Figure 6 is a partially omitted view with the coaxial line attached. FIG. 7 is a front view of the movable body showing its relationship with the terminal board, FIG. 8 is a front view of the terminal board, FIG. 9 is a circuit diagram of this device, and FIGS. 10 to 13 are conventional examples. Figure 10 is a front view of the balanced-unimpedance converter with a coaxial line attached, Figure 11 is a side view of the same, and Figure 12 is a side view of the same.
The figure is a front view of the converter with parallel lines attached, and FIG. 13 is a side view of the same. 11 is an upper body, 12 is a connecting cylinder, 13 is a connecting terminal, 14 is a clamping part, 15 is a storage chamber, 17 is a movable body, 18, 19, 20 are recessed parts, 21, 22 are recessed parts, 23 is a terminal board, 24 is an insertion part, and 26 and 27 are occlusal pieces.

Claims (1)

[Scope of utility model registration request] A storage chamber is provided on the other side of the upper body made of an insulating material, in which a connection tube and connection terminal for connecting to the connection terminal section of a television receiver, etc. are provided on one side of the upper surface, and the connection tube and the connection terminal are connected to each other in a straight line on one side in the longitudinal direction of the upper body. First and second terminal boards are placed close to each other in parallel, and a third terminal board is established and fixed on the other side, and a recess into which each terminal board is inserted, and a parallel recess that is perpendicular to the recess are provided. A movable body is provided from above parallel to the longitudinal direction of the upper body.
Each terminal board is provided with an insertion part that pairs with the recessed part and holds a parallel core wire, and the coaxial wire connected to the connection terminal is A clamping part for clamping the axis of the wire, an interlocking part for fixing the coated wire and the coated part of the coaxial line, and a balun transformer are attached to the back surface of the upper body,
A feeder line formed by connecting a first terminal board and a connecting terminal, a second terminal board and a balun transformer provided close to the first terminal board, and a third terminal board and a balun transformer, respectively. adapter for.