JPH042513Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention allows the CATV system line to be quickly restored in the event that a repeater amplifier in the line fails, regardless of the type or manufacturer of the amplifier. CATV that can be restored
This invention relates to an amplifier for temporary system recovery.

[Prior art, its problems]

When a CATV system amplifier fails, in order to restore it, it is necessary to remove the failed amplifier unit 110 from the housing 111 and replace it, as shown in Figure 6. Since there are many types of amplifier units and there is no compatibility between manufacturers, it takes a long time to recover from a failure if the service provider does not stock amplifier units of the same manufacturer and type as the failed amplifier unit. On the other hand, service providers rarely stock all types of amplifier units for each manufacturer as maintenance parts due to cost considerations. Therefore, when the amplifier unit fails as mentioned above,
Regardless of the type or manufacturer of the amplifier, it is desirable to quickly recover from a failure.

[Means for solving problems]

This invention is based on the type of amplifier unit that has failed.
We provide amplifiers that can quickly restore temporary recovery from failures regardless of the manufacturer, and this amplifier for temporary restoration of CATV systems is
A main body of a CATV system amplifier having a signal output terminal consisting of a main signal output terminal, a branch or distribution signal output terminal, and a signal input terminal is arranged in a main body of a size that can be accommodated, and the opposing inner surfaces of the case are Temporary fixing means having a contact portion capable of contacting the opposing inner surface of the vessel body at the tip of each leg extending to the side, and a long hole bored in the leg along the length direction; , a fixing means that is inserted into the elongated hole and fixes the temporary fixing means to the main body with the contact parts of the temporary fixing means in contact with the opposing inner surfaces of the container body, and an input terminal connected to the signal input terminal. a connection means, an output terminal connection means connected to each signal output terminal, a transmission line connecting the input terminal connection means and the output terminal connection means to the main body side, and a transmission line provided on the main body, the input terminal connection means and a relay amplification section that amplifies a signal supplied from a signal input terminal via a transmission line connected to the relay amplification section and supplies the signal to the signal output terminal via an output terminal connection means and a transmission line connected thereto; The main body includes a power supply terminal for supplying power to the relay amplifier section.

[Effect]

When the relay amplifier in the CATV system line breaks down, remove the amplifier unit inside the unit and
The main body of the CATV system temporary restoration amplifier according to this invention is installed in the container body, and the contact part of the temporary fixing means is in contact with the opposing inner surface of the container body.
The length of the leg portion of the temporary fixing means is adjusted using the elongated hole, and the temporary fixing means is fixed to the main body using the fixing means. As a result, this amplifier device is immovably fixed within the container. Further, the input terminal connecting means and the output terminal connecting means are respectively connected to a signal input terminal and a signal output terminal provided on the container body. When power is supplied to the device, by connecting the power supply to the power supply terminal, the amplifier device immediately becomes operational and can resume signal relay.

[Explanation of Examples]

This invention will be explained below with reference to illustrated embodiments. In FIGS. 1 to 3, reference numeral 1 denotes a body of, for example, a main line branch amplifier installed in the line of the CATV system, including a main line input terminal 2, a main line output terminal 3,
Branch output terminals 41, 42, 43, and 44 are provided. For example, coaxial cables 51, 5 are connected to each terminal.
2, 53, 54, 55, 56 are connected,
Tape 6, 6... is wrapped around the outer part of each terminal along with the above coaxial cable connection plug.
Prevents water from entering the connection.

Reference numeral 7 denotes a device main body of the CATV system temporary restoration amplifier according to this invention, and the device main body 7 is provided with at least one of a trunk amplifier section and a branch amplifier section. 8 is a power supply terminal connected to the power supply, 91, 92, 93, 94 are input terminals 2
This is a switch provided between the power supply terminal 8 and the coaxial cables 20, 20, . . . connected to the output terminal 3 and the branch output terminals 41 to 44, respectively. 10 is an input terminal connector connected to input terminal 2; 11 is a main line output terminal connector connected to main line output terminal 3; 12, 13, 14, and 15 are branches connected to branch output terminals 41 to 44, respectively. This is an output terminal connector. Each connector has a ground contact spring 1 at its tip, as shown enlarged in Figure 3a and b.
6 formed metal connector 17 and the connector 1
It consists of a terminal fitting 70 and a core wire set screw 19 provided on an insulating plate 18 attached to the inside. A coaxial cable 20 connects each connector 10 to 15 and a terminal of a branch or distributor provided in the device main body 7.
The zero core wire 20a is connected to each connector by soldering to the leg of the terminal fitting 70, and the outer ground wire 20b is soldered to the connector 17. 2
1, 21... are fixing fittings for fixing the main body part 7 in the container body 1, and are formed in an L shape as shown in FIG. It is attached to the device body 7 with screws 23 at the long holes 22 provided. These fixing fittings 21 protrude from opposing edges of the device main body 7 toward opposing inner surfaces of the container body 1, respectively, and
The tip portions 21b respectively contact the inner surface of the container body 1 to support the device main body portion 7 within the container body 1.

Figure 4 is a schematic diagram showing an example of the electric circuit of the CATV system temporary restoration amplifier device according to this invention.
Similar parts to those in FIGS. 1-3 are designated with the same reference numerals. A coaxial cable 20 and a capacitor 2 are connected between the input terminal connector 10 and the output terminal connector 11.
4 and 25 via a branch 71.
Further, the branch output branched and taken out between the capacitors 24 and 25 is supplied to the branch amplification section 26, and the amplified signal is branched via each distributor 72, 73, 74 and each of the capacitors 27 to 30. They are supplied to output terminal connectors 12 to 15, respectively. or,
The power supply terminal 8 is connected to switches 91 to 94,
Power is supplied to each connector 10-15 by operating these switches 91-94. The power supply terminal 8 is connected to the branch amplification section 26 through the constant voltage device 31. High frequency blocking choke coils 60 to 65 and capacitors 81 to 86 are provided on the connectors 10 to 15 side of each switch 91 to 94, respectively, to prevent leakage of high frequency signals to the power supply path. Therefore, power is mutually switched and supplied via each coaxial cable 20 by a switch, and power can also be supplied from the power supply terminal 8 to the coaxial cable via each switch. As the branch amplification section 26, a simple structure using one transistor is used.

In the amplifier shown in FIG. 4, the signal is directly transmitted from the main line input terminal 2 to the main line output terminal 3 without being amplified, and the signal is amplified by the branch amplifying section 26 and transmitted to the branch output terminals 12 to 15. It is something. When it is necessary to supply power from the power supply terminal 8 to a relay amplifier or the like in the previous or subsequent stage via the coaxial cables 20, 20, . . ., the switches 91 to 94 may be closed.

In FIG. 5, an amplifying section 36 is provided to amplify the signal transmitted from the main line input terminal 2 to the main line output terminal 3, and the branch amplifying section 26 is supplied with the signal amplified by the amplifying section 36. The operating voltage of the branch amplification section 26 and the amplification section 36 is supplied by a constant voltage device 31. The amplifying section 36 also has a simple configuration using one transistor.

When a relay amplifier in the line of a CATV system fails, remove the lid of the unit, remove the failed relay amplifier unit, and tighten the width between the fixing brackets 21 and 21 using the screws 23 provided on the main body of the device. 1st
The length in the vertical direction in the figure) is adjusted to fit the width inside the container 1, and the contact portion 21b of each fixing fitting 21 is brought into contact with the inner surface of the container 1, and the device main body 7 is adjusted to fit the width inside the container 1. Installed within 1. At this time, the device main body 7
By interposing a double-sided tape between the inner wall of the container body 1 and the inner wall of the container body 1, the device main body portion 7 can be more securely fixed inside the container body 1. Next, the terminal fittings 70 of the input terminal connector 10 and the output terminal connectors 11 to 15 are connected to the core wire pins 32 of the corresponding terminals 2, 3, 41, 42, 43, and 44 with the core wire set screws 19.
At this time, the earth contact spring 16 of the connector 17 is pressed against the inner surface of the container body 1, and the connection to the earth is reliably performed at high frequency. Then, close the necessary switches 91 to 94 and close the coaxial cable 2.
0, 20, . . . to the relay amplifiers of other system lines. As a result, the signal supplied to input terminal 2 is amplified to some extent and transmitted to each output terminal while maintaining the line characteristics.
Other equipment in the CATV system can also be moved. After that, cover the container 1. In this embodiment, this invention was applied to a trunk branch amplifier, but it can also be applied to a distribution amplifier or the like.

〔effect〕

According to this invention, when a relay amplifier, etc. in a CATV system line fails, it can be used regardless of the type or manufacturer of the failed amplifier unit, and it can be connected to the main line or branch line during repair. Furthermore, since there is no need to remove the body whose connected terminals are tightly taped from the coaxial cable line, the amplifier unit can be replaced extremely quickly. The amplifier device of this invention amplifies the signal input to the input terminal to some extent, so it can output the signal to the output terminal without deteriorating it.
You can easily create a recovery signal line that is similar to the CATV line. The amplification device of this invention is
Of course, there are amplifiers that only have a main amplifier, and amplifiers that only have a branch amplifier for branch signals.
Exactly the same method can be used for an amplifier device having both a mains amplifier and a branch amplifier.

[Brief explanation of the drawing]

Figure 1 is a plan view schematically showing the CATV system temporary restoration amplifier according to this invention installed in the main body of a failed amplifier unit, and Figure 2 shows only the amplifier according to this invention taken out. A schematic perspective view, FIG. 3a is an enlarged perspective view of a terminal connector used in the amplifier of this invention, FIG. 3b is an enlarged sectional view taken along line A-A of the terminal connector in FIG. 3a, and FIG. 5 is a schematic circuit diagram of the first embodiment of the amplifier according to this invention, and FIG. 5 is a schematic circuit diagram of the second embodiment of the amplifier according to this invention.
FIG. 6 is a perspective view of the conventional amplification unit removed from the case. 7...Device main body, 8...Power supply terminal, 10...Input terminal connection means, 11-15...Output terminal connection means, 20...Coaxial cable, 21...Fixing metal fittings, 23...Screws, {31 ... Constant voltage device, 91
~94... switch} power supply means, 26, 36...
Relay amplifier.

Claims (1)

[Scope of utility model registration request] A main body portion having a size that can be accommodated in a case of a CATV system amplifier and having a signal output terminal consisting of a main signal output terminal, a branch or distribution signal output terminal, and a signal input terminal, and a main body portion arranged in this main body portion and having a signal output terminal and a signal input terminal. A contact portion capable of contacting the opposing inner surface of the vessel body is provided at the tip of each leg extending toward the opposing inner surface of the vessel, and a long hole is bored in the leg along its length. a fixing means inserted into the elongated hole and fixing the temporary fixing means to the main body with the contact portions of the temporary fixing means respectively in contact with the opposing inner surfaces of the container body; , input terminal connecting means connected to the signal input terminal, output terminal connecting means connected to each of the signal output terminals, and connecting the input terminal connecting means and the output terminal connecting means to the main body side, respectively. Amplifying the signal supplied from the signal input terminal via a transmission line, the input terminal connecting means provided in the main body, and the transmission line connected thereto, and connecting the output terminal to the signal output terminal. a relay amplification unit that supplies power via the means and the transmission line connected thereto; a power supply terminal provided on the main body for supplying power to the relay amplification unit;
CATV system temporary restoration amplifier equipped with.