JPS5921583Y2 - TV terminal - Google Patents

Description

[Detailed description of the invention] This invention consists of a cylindrical portion 2 that fits into the terminal knob (1).
Attach the dummy resistor 4 to the cover 3 provided with the
This relates to a television terminal in which the dummy resistor 4 is brought into contact with the core wire contact spring 6 when the terminal is fitted into the terminal.

An object of the present invention is to prevent ghosting on a television screen caused by unused television terminals in the GATV system in which a plurality of televisions are connected through one antenna, and to improve the appearance of the television screen.

In the CATV system, as shown in FIG. 1, one antenna 7 is connected to a plurality of television terminals 9 via a wiring coaxial cable 8 to connect a television 10.

In this TV terminal 9, as shown in FIG. 2, conventionally, the coaxial cable 8 for wiring is fixed by a holding plate 11, the outer wire is connected to a terminal 12, and the core wire (not shown) is connected to a core wire contact spring. 6, connect the coaxial cable 5 for TV connection to the terminal knob 1, and screw it into the holding plate 13.
The outer wire was connected to the terminal 14, and the core wire (not shown) was connected to the core wire contact spring 6.

In this case, since the dummy resistor 4 is not provided in the TV terminal 9, in the TV terminal 9 to which the TV 10 is not connected, the core wire contact spring 6 and the terminal 1
4 is in an open state, the radio waves coming from the antenna 7 are reflected by the TV terminal 9 and returned to the antenna 7, resulting in a ghost on the TV screen. However, the terminal knob 1 was exposed and the appearance was spoiled.

The present invention has been devised in view of this point, and will be described in detail below with reference to Examples.

In FIG. 3, 1 is a terminal knob, which is screwed onto the terminal 14 to press the presser plate 13, and presses the presser plate 13 as shown in FIG.
3, the coaxial cable 5 is fixed and connected to the terminal 14.

Reference numeral 6 denotes a core wire contact spring, which connects the core wire 16 of the coaxial cable 5 inserted through the core wire insertion hole 15.Although not shown in the figure, this core wire contact spring 6 is used to connect the core wire 16 of the coaxial cable for wiring.
Core wires are connected.

Reference numeral 3 designates a cover, which is provided with a cylindrical portion 2 that fits into the terminal knob 1 as shown in FIG. A relief part 19 is provided to prevent the object from being hit.

A dummy resistor 4 is attached to this cover 3, one lead wire 20 of the dummy resistor 4 is inserted into the cylindrical portion 2 through the notch 21 so that it can contact the terminal knob 1, and the other lead wire 22 is The lead wire is supported by the wire fixing rib 18 and inserted through the lead wire insertion hole 23 so that it can come into contact with the core wire contact spring 6.

Therefore, as shown in FIG. 3, when the cylindrical part 2 of the cover 3 is fitted to the terminal knob 1 without the coaxial cable 5 connected, the lead wire 22 of the dummy resistor 4 contacts the core wire contact spring 6 and makes contact with the core wire. A dummy resistor 4 is connected between the spring 6 and the terminal 14 to prevent radio waves coming from the antenna 7 from being reflected from the TV terminal 9.
When the coaxial cable 5 is connected as shown in the figure, the cover 3
Since the lead wire 22 of the dummy resistor 4 does not come into contact with the core wire contact spring 6, troubles due to excessive input can be prevented.

FIG. 6 shows another embodiment of the present invention, in which a lead wire 20 of a dummy resistor 4 is brought into pressure contact with a contact spring 24 provided on a terminal knob 1, and the lead wire is inserted through an insertion hole 25 provided on the terminal knob 1. The wire 20 is inserted through it and connected to the contact spring 24, and the core wire 16 of the coaxial cable 5 is fixed with a terminal screw 26 as shown in FIG.
The connection of the dummy resistor 4 can be ensured.

FIG. 8 shows another embodiment of the present invention, in which the cover 3 is fixed by the terminal knob 1, and when the coaxial cable 5 is connected, the lead wire 22 of the dummy resistor 4 is connected as shown in FIG. can be prevented from contacting the core wire contact spring 6, the cover 3 will not be forgotten to be attached, and the dummy resistor 4 can be reliably connected.

As mentioned above, in the present invention, a dummy resistor is attached to a cover provided with a cylindrical part that fits into a terminal knob, and when the cover is fitted to the terminal knob without connecting a coaxial cable, the dummy resistor is connected to the core wire. Since it is brought into contact with the contact spring, there is no reflected wave from the unused TV terminal, thereby preventing ghosting on the TV screen, and since the terminal knob is covered with a cover, the appearance is not spoiled. .

[Brief explanation of the drawing]

Fig. 1 is an indoor wiring diagram using a general TV terminal, Fig. 2 a and l) are a front view and partially cutaway side view of a conventional TV terminal, respectively, and Fig. 3 is an example of an embodiment of the present invention. Fig. 4 is a partially cutaway vertical cross-sectional view of the above with the coaxial cable not connected, Fig. 5 is a partially cutaway longitudinal cross-sectional view of the above with the coaxial cable connected, Fig. 5 is an exploded perspective view of the main parts of the above, Fig. 6 The figure is a partially cutaway vertical cross-sectional view of another embodiment of the present invention with no coaxial cable connected, FIG. 7 is a partially cutaway longitudinal cross-sectional view with the same coaxial cable connected as above, and FIG. 8 □ 9 is a longitudinal sectional view, partially cut away, of another embodiment of the present invention, with no coaxial cable connected, and FIG. 9 is a longitudinal sectional view, partially cut away, with the same coaxial cable connected. 1...Terminal knob, 2...Cylindrical part, 3...Cover, 4...Dummy resistor, 5...Coaxial cable, 6・・・・・・Core wire contact spring.

Claims (1)

[Scope of utility model registration request] A dummy resistor is attached to a cover provided with a cylindrical part that fits into the terminal knob, and when the cover is fitted to the terminal knob without connecting the coaxial cable, the dummy resistor comes into contact with the core wire contact spring. TV terminal.