JPH041478B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a plug for an F-type television terminal.

[Background Art] Conventionally, this type of TV wiring equipment has a built-in matching resistor on the TV terminal side in order to prevent ghosting on the TV screen due to empty terminals. There was a problem where the coaxial cable of the load equipment was connected without removing it, which caused trouble.

[Object of the Invention] The present invention was made in view of the above-mentioned problems, and its purpose is to eliminate the need to remove the matching resistor when connecting the coaxial cable from the load equipment side. It has a structure that cannot be connected,
Moreover, if the plug is connected to the television terminal, the load equipment can be connected to the television terminal, and there is no need to connect a matching resistor to the television terminal side.

[Disclosure of the Invention] Examples The present invention will be explained below with reference to drawings of examples. 1 in the diagram
is a base made of synthetic resin, and at the top of one end of this base 1 is integrally erected a standing wall 4 with a through hole 3 through which the coaxial cable 2 is inserted, and on the upper surface there is a wall 4 for connecting a braided wire. A connecting fitting 5 is provided. Connection fitting 5
A caulking piece 7 is provided on both side edges of the end on the side of the vertical wall 4, and is provided with saw teeth 6 that bite into the knitted wire 2b exposed by peeling off the jacket 2a of the coaxial cable 2.
The caulking piece 7 is bent inward so that the sawtooth 6 bites into the knitted wire 2b of the coaxial cable 2 inserted from the outside through the through hole 3 to electrically connect the connecting fitting 5 and the knitted wire 2b. At the same time, the coaxial cable 2 is fixed. A notch 8 is provided in the center of the other end of the connecting fitting 5, and a spring terminal 9 for sandwiching the core wire 2c of the coaxial cable 2 is provided upright on the upper surface of the base 1 exposed in the notch 8. It has been done. This spring terminal 9 opens on both sides when the core wire 2c is inserted between them, and has spring pieces 9a that press the core wire 2c from both sides with spring force to electrically connect and mechanically clamp the base 1. The upper end of the pin 10a of the F-shaped plug part 10 provided on the lower surface of the base 1 is passed through the base 1 upward and caulked to electrically connect with the pin 10a and to support and fix it to the upper surface of the base 1. be done. Reference numeral 11 denotes a terminal which is electrically connected to the connecting fitting 5 by protruding upward from the upper surface of one side of the other end of the connecting fitting 5 on the side of the spring terminal 9, with the side surface facing diagonally. As shown in FIG. 2, this terminal 11 is provided with a notch groove 11a at the upper end, and one lead wire 12a of the resistor 12 is inserted into this notch groove 11a for electrical and mechanical connection. It is now connected to Of course, electrical and mechanical connections may be made by wrapping, soldering, etc. Now, resistor 12
is a resistor with a value that matches the line impedance, and when the coaxial cable 2 is not connected, the other lead wire 12b is held between the spring pieces 9a of the spring terminal 9 instead of the core wire 2c, and the spring terminal Resistor 1 is connected between 9 and terminal 11.
Place the 2 main bodies. Reference numeral 13 denotes a shield case, and this shield case 13 covers the spring terminal 9 portion, and has vertical pieces 14 bent upward from both side edges of the other end of the connection fitting 5 and extending along the inner surfaces of both side walls. It is inserted through the opening on the bottom surface and covered over the top of the connection fitting 5, as shown in FIG. The dowel 14a protruding from the outer surface of the standout piece 14 is the shield case 13.
The shield case 13 is fitted into a small hole 13a formed in the side wall of the shield case 13, and the shield case 13 is fixedly held on the connection fitting 5. As shown in FIG. 3, the plug part 10 is made up of a connecting metal plate 10b formed by bending a metal plate into a cylindrical shape so that both ends thereof face each other, and a pin 10a arranged at the central axis of the connecting metal plate 10b. The connecting metal member 10b is fixed to the lower surface of the base 1, and the connecting metal member 10b is further electrically connected to the connecting member 5. Note that the terminal 11 may be configured by extending a part of the connection metal concrete 10b upward. 15
is a cover made of synthetic resin, and the cover 15 has an open bottom surface and one end surface, and has engaging grooves 15a bored in the longitudinal direction of the lower inner surfaces of both side walls. An engaging piece 16 protruding outward from the upper end is slid into the engaging groove 15a to be engaged and placed on the base 1.

However, when connecting the coaxial cable 2 from the load equipment to the outlet part B of the outlet-type television terminal A shown in FIG. After disconnecting the resistor 12 from the spring terminal 9 and removing it or moving it to one side, connect the core wire 2c of the coaxial cable 2 to the spring terminal 9 and connect the plug part 10 to the outlet part B. Also, connect the plug part 10 to the outlet part B. In order to eliminate this problem, it is advisable to leave the lead wire 12b of the resistor 12 connected to the spring terminal 9 and connect the plug section 10 to the outlet section B.

[Effects of the Invention] The present invention is constructed as described above and includes a spring terminal for connecting a core wire of a coaxial cable, a connecting fitting for connecting a braided wire of a coaxial cable, and a terminal electrically connected to the connecting fitting. A resistor that matches the line impedance is placed between the terminal and the spring terminal and is electrically connected to the terminal, so that when the coaxial cable is not connected, the resistor is connected. If you connect it to the empty terminal of the TV terminal as it is, the resistor will be connected to the line, which is the same as connecting a load device, and you can prevent the generation of reflected waves.Also, when connecting the coaxial cable, be sure to Since the resistor must be removed, it is possible to prevent both the resistor and the load device from being connected to the same line.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of one embodiment of the present invention;
The figure is an enlarged perspective view of the same terminal with some parts omitted.
The figure is a perspective view of the plug part of the same as above, and Fig. 4 is a perspective view of a TV terminal that can be used in the same as above, 2 is a coaxial cable, 2b is a knitted wire, 2c is a core wire, 5 is a connecting metal fitting, and 9 is a spring terminal. , 11 is a terminal, and 12 is a resistor.

Claims (1)

[Claims] 1 A spring terminal for connecting a core wire of a coaxial cable, a connecting fitting for connecting a braided wire of a coaxial cable, and a terminal electrically connected to the connecting fitting, and a line between the terminal and the spring terminal. A TV terminal plug consisting of a resistor that matches the impedance and is electrically connected.