JPH01109674A - Protector - Google Patents

Abstract

PURPOSE:To make the connection wiring smooth, facilitate the work, and reduce the wiring space by extending an IN side and an OUT side connecting cables with connector to opposite sides to each other through caps at opening sections on both ends of a cylinder which is a protector main body. CONSTITUTION:An IN side connecting cable 4 is extended outward through a cable inserting hole 10 bored on the first cap 2, an IN side connecting connector 6 is provided on its extended end. An OUT side connecting cable 5 is likewise extended outward through a cable inserting hole 11 bored on the second cap 3, an OUT side connecting connector 7 is provided on its extended end. A protector is assembled in an outdoor facility or a control box while being supported by the IN side and the OUT side erection cables on both ends via cables 4 and 5 with connector.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a protector for use in a control box of a tower-top switch in a power transmission line, or for a telephone subscriber.

Conventional technology Telephone subscriber protectors, CATV protectors, etc. are installed to protect equipment and subscribers from lightning surges, high voltage contact, etc. These protectors currently in use are
As typified by No. 48651, a cup-shaped lid is fitted onto a base board on which a safety element such as a lightning arrester is mounted, an IN side connector and an 0LJT side connector are attached directly to the base board, and this is installed under the eaves, etc. It is installed outdoors, and work is being done to connect the internal and external cables (coaxial cables) to both connectors.

On the other hand, if the control circuit of a tower switch on a power transmission line is damaged by a lightning surge, maintenance and inspection would be required, so the current situation is that it is being considered to incorporate a protector into the control box to protect it. It is in.

Problems to be Solved by the Invention However, with the existing protectors mentioned above, the work of connecting the coaxial cables to the connectors installed in parallel on the protector base is not only very time-consuming and complicated, but also depends on the skill of the worker. It is both good and bad and lacks reliability.

In addition, since the above-mentioned protector has a structure in which both the installed cables on the IN side and 0υT side are introduced and led out in the same direction to the bottom of the base, there is a drawback that both cables have a limit in bending and must be routed by making a large detour. This has the disadvantage that both cables must be centrally routed in a limited space on the bottom of the base, which occupies a large amount of cable wiring space.

In addition, conventional protectors have a structure in which both connectors are placed side by side at a predetermined distance on the base, and both cables are centrally wired and connected to the bottom of the base, so the width and diameter of the base and case are inevitably large. However, due to the above-mentioned problem of wiring space, it is difficult to install it in a narrow and limited space.

Therefore, we considered reusing the subscriber protector as a protector for the control box of the tower-mounted switch, but there were problems with the orientation of the cables, increased external size, installation space, etc. Therefore, significant modifications are required to use this in current control boxes.

The present invention was devised in response to the above circumstances, and has solved the above problems and is suitable for telephone subscribers and CATV.
Alternatively, it is an object of the present invention to provide a protector that can be suitably incorporated into a control box of a tower-top switch of a power transmission line.

Means for Solving the Problems According to the present invention, as a means for solving the above-mentioned problems, the envelope of the safety device is formed of a cylindrical body that is open at both ends, and one end of the cylindrical body is opened at one end. and the other end opening are respectively closed with caps, and a circuit board on which a safety element such as a lightning arrester is mounted is built into the same cylinder, and an IN side connection cable is connected to the circuit board, and this is connected to the above one end opening. A cap that is fitted into the circuit board is passed through and extends to the outside, and the terminal is provided with a connector for connecting the IN side, and a cable for connecting the OUT side is connected to the same circuit board, and the cap is fitted into the opening at the other end. The cylindrical body extends to the outside on the opposite side, and the terminal is provided with a connector for OUT side tangential connection, and the cable with the connector that extends from both ends of the cylinder to the opposite side is used to connect the IN side or the OUT side.
It is configured so that it can be connected to the UT side cable.

Function In the present invention, as described above, the protector is connected to the IN side and the 0υT side by connecting cables with connectors on the IN side and 0υT side that extend to opposite sides through the caps at both end openings of the cylindrical body that is the main body of the protector. The connector can be connected to the OUT side installed cable, and a protector can be installed.

Therefore, the IN side and OUT side, which usually exist on opposite sides of each other.
By guiding the side installation cables to each end of the cylindrical body, smooth connection wiring can be performed without complicating the wiring, and both cables can be detoured and bent to the underside of the base to centralize wiring, as with conventional protectors. Unreasonable connection configurations and problems caused by this can be effectively resolved.

Further, the protector can be easily connected to the installed cables on the IN side and the OUT side using the connecting cable with both connectors, and the work of installing the protector becomes extremely easy.

In addition, in the present invention, as described above, the IN side installed cable is connected to the connector using a connecting cable with a connector extending from the cap at one end of the cylindrical body, which is the connector main body.
The T-side installation cable is connected to a connector using a connecting cable with a connector extending from the cap on the other end of the same cylinder, so the wiring space for the installation cable is minimized, and the connector is attached to the main body of the protector. It saves space when incorporating a protector, and the outer shape or width of the protector, such as a protector where connectors are placed side by side on a conventional protector base and the installed cables on the IN and OUT sides are guided and connected to the same surface of the base, can be reduced. This feature allows the cylindrical body of the protector to be made as small as possible without increasing the size of the protector, and in combination with the effect of reducing the wiring space in conventional protectors by centrally wiring both installed cables to the bottom of the protector. This safety device can be installed and accommodated in a limited space.

In addition, since each connection cable connected to the wiring board extends from each cap, it is possible to remove each cap and pull out the wiring board together with the cables to perform maintenance and inspection, or to assemble it, simplifying and rationalizing the structure. Assembly can be simplified.

EXAMPLES Hereinafter, examples of the present invention will be explained based on FIGS. 1 to 12.

A cylindrical body 1 that is open at both ends is used as an envelope constituting the main body of the protector. The cylindrical body 1 consists of a slightly elongated cylindrical body, and the opening at one end of the cylindrical body 1 is closed with a first cap 2, and the opening at the other end is closed with a second cap 3. Fit it,
A grounding band 8 made of a split ring is wrapped around the outer periphery, and the band split portion is fastened to the outer circumferential surface of the cylinder with a screw 9.

The cylindrical body l and the first. The second cap 2.3 as well as the earthing band 8 are made of an electrical conductor, preferably aluminum or an aluminum alloy.

4 is an IN side connection cable, 5 is an OUT side tangential connection cable, and the IN side connection cable 4 is extended outward through the cable insertion hole 1o made in the first cap 2, and the IN side connection cable 4 is extended outward through the cable insertion hole 1o made in the first cap 2, and the IN side connection cable 4 is extended outward through the cable insertion hole 1o made in the first cap 2. Equipped with a connector 6 for side connection, and also 0υT
The side connection cable 5 is extended outward through a cable insertion hole 11 made in the second cap 3, and has an OU at its extended end.
Equipped with a connector for T-side connection. Watertight rubber bushings 12 and 13 are provided in each of the cable insertion holes 10 and 11, respectively.

Reference numeral 14 denotes a circuit board for forming a protector circuit built into the cylindrical body 1, and the surface connection cable is connected to the circuit board 14 at its introduction end into the cylindrical body. The circuit board 14 is made of a conductive material, preferably aluminum or aluminum alloy, and its outer shape is a rectangular plate with approximately the same length as the cylindrical body l.Both ends of the board are bent into a rectangular shape, and the mounting plates 14a and 14b are integrated. One mounting plate 14a is attached to the inner surface of the first cap 2 and fixed by welding or the like, and the other mounting plate 14b is fixed to the inner surface of the first cap 2.
42 is removably attached to the inner surface of the cap 2 with a set screw 16.

In this way, the circuit board 14 is horizontally suspended in the cylinder 1 at both ends thereof, and the circuit board 14 is horizontally mounted on the second cap 3 by fastening with the screws 16, and at the same time, the first ．． The second caps 2 and 3 are attached to the cylindrical body 1 in a hermetically sealed manner. 32 and 33 are the second screws to which the screw 16 is screwed;
This is a mounting hole drilled in the cap 3 and the mounting plate 14b.

The circuit board 14 includes safety elements forming a protector circuit, such as lightning arrester (gas discharge tube) A1, capacitor C,
A coil CH etc. are mounted, and terminal assemblies 21 and 22 are provided to connect the multiple elements and to connect each element to the IN side and OUT side connection cables 4.5. Both the t44 child assemblies 21 and 22 have the same structure, and are shown in Figure 'M2,
Figure 4.

As shown in detail in FIGS. 5, 6, and 7, insulating blocks 23.24 are used as carriers, and insulating blocks 23.24 are used as carriers.
Cable connection washers 25 and 26 that are fastened or released by screws 27 and 28 are provided on the top side of 24, and
A removable element connection terminal 34.35 is installed on the lower surface of the cable connection washer 25.26, and is aligned with the screw 27.28, and the element connection terminal 34.35
Terminal pieces 34a, 35a and 34b, 35b are bent out from the insulating blocks 23, 24 and protrude below the bottom surface of the blocks.

On the other hand, in order to assemble the terminal assembly 21, 22 to the circuit board 14, as shown in FIG. The insulation block 23 is inserted through the opening of the cutout hole 29°30.
．． 24 is fitted, and the edges of the mounting notch holes 29.30 are gripped and fixed using the engaging edges 23a, 23b, 24a, 24b projecting on both sides of the insulating blocks 23.24.

In this way, the terminal assembly 21 for connecting the IN side cable is placed on one end of the circuit board 14, and the terminal assembly 22 for connecting the OUT side cable is placed on the other end, and the cable is connected on the top side of the circuit board 14. The connection terminal pieces 34a, 34b, 35a, and 3Sb of the element connection terminals 34.35 that are electrically connected to the washers 25.26 are arranged on the lower surface side of the washers 25.26.

The security element is mounted on the lower surface of the circuit board 14, and the sixth
As shown in the figure, one end of the lightning arrester A is connected to the circuit board 14, and the other end is connected to the circuit board 14! Terminal piece 34 of N-side cable connection terminal assembly 21
one end of the coil CH is connected to the circuit board 14, and the other end is connected to the terminal piece 34 of the assembly 21.
b, and further connect one end of the capacitor C to the terminal piece 34a of the same assembly 21 and the other end to the terminal piece 35a of the OUT side cable connection terminal assembly 22, and connect the protector shown in FIG. form a circuit.

Then, the end of the IN-side connection cable 4 with the connector is inserted into the cylinder 1 through the cable insertion hole 10 of the first cap 2, and the center conductor 4a is inserted into the one terminal assembly 2.
Insert the lower surface of the cable connection washer 25 of No. 1, that is, between the cable connection washer 25 and the element connection terminal 34, and screw the screw 27
The tightening is performed to connect the circuit board 14, that is, the protector circuit.

Similarly, the end of the OUT side connection cable 5 with the connector is inserted into the cylinder 1 through the cable insertion hole 11 of the second cap 3, and the center conductor 5a is inserted into the other terminal assembly 2.
It is inserted into the lower surface of the second cable connection washer 26, that is, between the cable connection washer 26 and the element connection terminal 35, and is tightened with the screw 2 to connect it to the circuit board 14, that is, the protector circuit.

A cable stop band 17 is arranged on the circuit board 14 at the introduction end of the IN side connection cable 4, and the cable stop band 17 catches the introduction end of the IN side connection cable 4, and the circuit board 14 Screw 19 into the mounting hole 31 drilled in
Similarly, a cable stopper band 18 is arranged at the introduction end of the OUT side connection cable 5 of the board 14, and the cable stopper band 18 is used to tighten the OUT side connection cable S. While holding and tightening the screw 20 into the mounting hole 31 drilled in the circuit board 14,
The cables 4.5 and the circuit board 14 are connected together, and at the same time, the connection is made stable.

Effects of the Invention With the above structure, the wooden safety device has a first part of the cylindrical body which is the main body of the safety device.
An IN side connecting cable with a connector extending from the cap can be easily connected to the IN@erected cable, and an OUT side connecting cable with a connector extending from the second cap on the opposite side. This makes it easy to connect the connector to the OUT side installed cable, and the protector is connected to outside equipment or control equipment while being supported by the IN side and OUT side installed cables at both ends via both cables 4.5 with connectors. In-box integration is done. Even if a mating connector is to be installed on-site to the installed cable, the work is significantly simpler than the work of directly introducing the installed cable into the protector and connecting it to a connector built into the protector.

Therefore, and as mentioned above, they usually exist on opposite sides of each other! By guiding the installation cables on the N side and 0υT side to each end of the cylindrical body, smooth connection wiring can be performed without complicating the wiring, and both cables can be detoured to the bottom of the base like a conventional protector. The problems caused by the unreasonable connection form of centralized wiring can be effectively solved.

In addition, in the present invention, as described above, the IN side installed cable is connected to the connector using a connecting cable with a connector extending from the cap at one end of the cylindrical body that is the connector main body, and the OU
Since the T-side installed cable is connected to the connector using a connecting cable with a connector extending from the cap on the other end of the same cylinder, it is possible to save space when the connector is built into the main body of the protector, and 1. The wiring space for the installation cable can be minimized, and it is possible to minimize the wiring space for the protection device, such as a protection device that connects the IN side and OUT side installation cables to the same surface of the base by arranging connectors in parallel on the conventional protection device base. The function of reducing the wiring space in conventional protectors by making the cylindrical body of the protector as thin as possible without increasing the external size or width, and centrally wiring both installed cables to the bottom of the protector. Combined with this, this safety device can be installed and accommodated in a limited space. In addition, since each connection cable connected to the wiring board extends from each cap, it is possible to remove each cap and pull out the wiring board together with the cables to perform maintenance and inspection, or to assemble it, simplifying and rationalizing the structure. Assembly can be reduced to N elements.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the appearance of a protector showing an embodiment of the present invention, Fig. 2 is a perspective view showing the appearance of a circuit board, Fig. 3 is a side view of the protector, and Fig. 344 is a cross section of the protector. Fig. 5 is a top view of the circuit board, Fig. 6 is a back view of the circuit board, and Fig. 7 is a top view of the circuit board.
Fig. 8 is a sectional view of the circuit board and cap assembly before mounting safety elements etc., Fig. 9 is a plan view of the same board,
Figure 'M10 is an inner side view of the first cap showing a cross section of the board, Figure 11 is an inner side view of the second cap, and Figure 'M12 is a diagram showing an example of the circuit of the protector. DESCRIPTION OF SYMBOLS 1... Cylindrical body, 2... First cap, 3... Second cap, 4... IN side connection cable, 5...00
T side connection cable, 6...IN side connection connector,
7... Connector for OUT side connection, 8... Earth band, to, it... cable insertion hole, 14... circuit board, 14a, 14b... mounting plate, 21.22...
・Naruko assembly, 25.26... washer for cable connection,
34゜35...Element connection terminal.

Claims (3)

[Claims] (1) One end opening of a cylinder whose both ends are open is fitted with a first cap, and the other end opening is fitted with a second cap, and a circuit board on which a security element is mounted is built into the cylinder. Then, the IN side connection cable connected to the circuit board is extended to the outside from the first cap, and the IN side connection connector is provided at the end of the cable, and the OUT side connection cable connected to the circuit board is extended to the outside from the first cap. A protector, which extends outward from a second cap and is provided with an OUT side connection connector at the end of the cable. (2) the circuit board has a first cap at both ends;
2. The safety device according to claim 1, wherein the safety device is suspended horizontally on the second cap, and one end is removably attached to the first cap or the second cap with a screw. (3) The protector according to claim 1, wherein the cylindrical body is provided with a grounding band wrapped around its outer periphery.