JPS642506Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to protect various equipment installed at the terminals and intermediate points of communication lines, as well as the operators of such equipment, from lightning (mainly induced lightning) and other abnormal voltages and currents. Regarding security devices installed in
A plug-in protector consists of an overvoltage operating element that discharges and short-circuits abnormal voltages and currents generated in communication lines to ground, and interrupts abnormal currents that exceed the allowable current capacity of communication lines. To provide a safety device equipped with a fuse having a fusing characteristic coordinated with the allowable current capacity of the communication line to prevent burnout of the communication line and at the same time prevent damage due to a current exceeding the allowable current capacity of an overvoltage operating element.

In electric power companies, railways, various government offices, or general manufacturing companies' electric power plants, the purpose of information, automatic control, measurement, and various other communication services is between the same plants and between the same plants and other plants. Communication lines are installed, and it is well known that the terminals and equipment installed in the middle of these communication lines have recently become extremely compact and lightweight due to the use of semiconductors. Since they are vulnerable to abnormal voltages and currents, safety devices are installed to protect them as well as the people who operate them.

Conventionally, there are safety devices shown in FIGS. 8 and 9 in which a plug-in protector consisting of a line isolation test plug, a fuse, and an overvoltage operating element is attached. That is, this security device includes a separation plug mounting section 61 for mounting a line separation test plug on a base 60 made of an insulating material;
A fuse mounting part 62 for mounting a fuse and a protector mounting part 63 for mounting a protector consisting of an overvoltage operating element are successively provided, and these mounting parts 6
1, 62, and 63, a pair of jack terminals 64, 64, 64', and 64' are provided in two rows in the separating plug mounting part 61, and a pair of jack terminals 64, 64, 64' in the fuse mounting part 62, respectively. 64,6
A pair of socket terminals 65, 65, 65', 65' are provided in two rows aligned at 4', 64', respectively.
The protector mounting portion 63 is provided with a socket terminal 66 for the earth side external terminal and a pair of socket terminals 67 and 68 for the line side external terminal, and furthermore, the lower surface of the base 60 is provided with a separation plug mounting portion 61 and a fuse mounting portion. Connection fittings 69, 69, 70, 70, input side connection terminals 71, 71 and output side connection terminal 7 for connecting between predetermined terminals of the section 62 and the protector mounting section 63
2.72 pairs are arranged in two rows.

However, in the conventional security device shown in the figure,
In the protector mounting part 63, a separation plug is provided in which a socket terminal 66 for a ground side external terminal and a pair of socket terminals 67, 68 for a line side external terminal are arranged in a line and arranged in two rows on straight lines x and y. Jack terminals 64, 64, 64', 6 of mounting part 61
4' and the socket terminal 65 of the fuse mounting part 62,
Because it is provided between 65, 65', and 65',
Socket terminals 65, 65,
65', 65', the socket terminals 67, 68 for the line side external terminals of the protector mounting part 63, and the connecting fittings 70, 70 for connecting the output side connection terminals 72, 72 are the socket terminals 67, 68 for the line side external terminals. In order to connect the two, branch parts 73 and 74 are made to protrude from the main body and are fixed to the branch parts 73 and 74 with bolts. In this way, the connecting fittings 70, 70 have branch portions 73, which protrude beyond the main body due to the arrangement positions of the line-side external terminal socket terminals 67, 68.
74, or in other words, the connecting fittings 70, 70 cannot be formed in a straight line, resulting in a disadvantage that material is wasted in manufacturing them.

Furthermore, conventionally, since the protector mounting portion 63 on the top surface of the base 60 is formed in a flat surface, when a plug-in protector is inserted into the socket terminals 66, 67, and 68 and installed, the protector is bent. The socket terminals 66, 67, and 68 may be deformed due to improper installation, and the protectors are arranged unevenly, resulting in an unsightly disadvantage.

The present invention has been developed in view of the above points, and the connecting fittings for connecting the socket terminal of the protector mounting part to the socket terminal and output side connection terminal of the fuse mounting part are formed in a substantially straight shape, and the material is This eliminates wasted work, prevents damage such as deforming the socket terminal of the protector mounting part of the protector and the external connection terminal of the protector when installing the protector, and allows the protectors to be arranged neatly on the base. The purpose is to provide a safety device that can.

For this reason, the present invention has a disconnection plug attachment section for attaching a disconnection plug to a base made of an insulating material, a fuse attachment section for attaching a fuse, and a protector attachment section for attaching a protector consisting of an overvoltage operating element. and a plurality of sets of these mounting parts, the separating plug mounting part is provided with a pair of jack terminals in two rows, and the fuse mounting part is provided with two jack terminals aligned with the jack terminals. A pair of socket terminals are provided in each row, a socket terminal for the earth side external terminal and a pair of socket terminals for the line side external terminal are provided in the protector mounting part, and the lower surface of the base is provided with the above-mentioned cut-out terminal. In a safety device in which a pair of connection fittings for connecting predetermined terminals of a plug mounting part, a fuse mounting part, and a protector mounting part, and a pair of input side connection terminals and output side connection terminals are arranged in two rows, the protection device is installed. each of the pair of line-side external terminal sockets of the part is arranged in line with the respective rows of the jack terminals of the line separation plug mounting part and the socket terminals of the fuse mounting part arranged in the two rows, and The connecting fittings that connect the socket terminal for the line side external terminal, the socket terminal of the fuse mounting part, and the output side connection terminal are made approximately straight, and the protector is attached to the protector mounting part on the top surface of the base. It is characterized in that a recessed portion having a shape corresponding to the side end surface is formed.

Hereinafter, the present invention will be explained with reference to the drawings and examples.

1 to 4, reference numeral 1 indicates a security device, and the basic configuration of this security device 1 is not particularly different from the conventional one shown in FIGS. 8 and 9. That is, in the security device 1, the base 2 made of an insulating material includes a separation plug mounting part 3 for mounting a line separation test plug 50;
A fuse mounting part 4 for mounting a fuse 51 and a protector mounting part 5 for mounting a protector 52 consisting of an overvoltage operating element are successively provided, and each of these mounting parts 3, 4, and 5 provides protection for one line. A plurality of circuit configurations are provided. A pair of jack holes 6 are drilled in two rows in the separating plug mounting portion 3, respectively.
Jack terminals 7, 7, 7', 7' are arranged thereon. The fuse mounting part 4 has jack terminals 7, 7,
A pair of socket housing grooves 8 and bolt insertion holes 9 are formed in two rows aligned at 7', 7', respectively, and socket terminals 10, 10, 10',
10' is arranged. Socket holes 11, 12, 13 and bolt insertion holes 14, 15, 16 are drilled at three locations in the protector mounting portion 5, and a socket terminal 17 for the earth side external terminal is provided in the socket hole 11. 12 and 13 are provided with socket terminals 18 and 19 for line side external terminals.

Further, on the bottom surface of the base 2, input side connection terminals 22, 22 are fixed to two jack terminals 7, 7 on one side of the separating plug mounting part 3 with bolts 21, 21, respectively, for each line. are arranged, and the other two jack terminals 7',
7' and one socket terminal 1 of the fuse mounting part 4
0 and 10 respectively with bolts 23, 23, 24,
First connecting fittings 25, 25 are provided for fixing at 24 and connecting them, and for connecting the other socket terminals 10', 10' of the fuse mounting part 4 and the line side external terminal of the protector mounting part 5. a second connecting fitting 29 that connects the socket terminals 18 and 19 by fixing them with bolts 27, 27, 28, and 28, respectively;
29 are arranged. These second connection fittings 29,
Following 29, output side connection terminals 30, 30 are integrally provided. 31 is a fixing screw.

The jack terminals 7, 7, 7', 7' of the above-mentioned separation plug mounting part 3 and the socket terminals 10, 10, 10', 10' of the fuse mounting part 4 are arranged in two rows on straight lines X and Y. The input side connection terminals 22, 22, the first connection fittings 25, 25, the second connection fittings 29, 29, and the output side connection terminal 3
Each pair of numbers 0 and 30 are arranged in alignment with the straight lines X and Y.

Further, 33 is an insulating partition plate provided between the fuse mounting portions 4, 34 is a bottom plate, 35 and 36 are terminal covers, and 37 is an indicator strip.

In such a safety device, in the present invention, as shown in FIGS. 5 to 7, each of the line side external terminal socket terminals 18 and 19 disposed in the protector mounting portion 5 of the base 2 is connected to the They are arranged in alignment with straight lines X and Y. Therefore, the positions of the line-side external terminal socket terminals 18 and 19 and the line-side external terminal socket terminal 1 disposed on the bottom surface of the base 2 are as follows.
The second connecting fittings 29, 29 for wiring No. 8 and 19 almost coincide on the straight lines X and Y, and the second connecting fittings 29, 29 are similar to those of the conventional ones shown in FIGS. In this way, it is possible to use a device formed into a substantially straight line without a branch portion protruding from the main body.

In addition, the socket terminal 17 for the earth side external terminal,
18 is positioned between straight lines X and Y. This earth-side external terminal socket terminal 17 is fixedly connected with a bolt 39 to a band-shaped earth connection terminal 38 provided on the lower surface of the base 2 to intersect with the second connection fittings 29, 29 three-dimensionally. Earth connection terminal 3
At both ends of 8, there are connection ends 4 hanging at right angles.
0 and 40 are exposed and arranged on the side surface of the base 2, and a stopper hole 41 is bored therein. For example, when adding a safety device, the connection ends 41 of adjacent ground connection terminals 38 are butted together, and the overlapping fastening holes 41 are used to connect them with bolts and nuts. It's easy to do.

Further, a recess 43 is formed in the protector mounting portion 3 on the upper surface of the base 2 in a shape corresponding to the mounting side end surface of the protector 52. Therefore, in this case, protector 5
In accordance with the shape of the rectangular mounting side end surface of 2, the recess 4 is
3 is also considered to be a slightly larger rectangle.

A method of using the security device configured as described above will be explained. For the sake of simplicity, one line will be explained below. A separation plug 50 is attached to the separation plug attachment part 3, and this separation plug 50 is connected to two of the four banana terminals. They form a pair, each with a monitor socket terminal, and jack terminals 7 and 7'.
and 7 and 7'. When performing a separation test, by rotating the separation plug 50 by 90 degrees and installing it, the jack terminals 7 and 7 and 7' and 7' are connected, and the equipment connected to the rear of the safety device is connected. Since the input side is disconnected from the communication line and the communication line is short-circuited, the communication line and equipment can be tested. It is also possible to monitor from the monitor socket of the separation plug 50.

Next, two fuses 5 are installed in the fuse mounting part 4 between the socket terminals 10 and 10' and between the socket terminals 10 and 10'.
1,51 is installed. The protector mounting portion 5 is equipped with a plug-in protector 52, which has an overvoltage operating element, that is, a circuit configured with an arrester, a diode, etc., and is housed in a case made of an insulating material or the like. When attaching the protector 52 to the protector mounting part 3, connect each outer end of the protector 52 to each socket terminal 17, 1 of the protector mounting part 3 using this recess 43 as a guide.
8 and 19, and the mounting side end surface of the protector 52 is accommodated in the recess 43. A plug-in type in which the end face of the case where the external terminals are arranged has a similar shape to the recess 43, and the line side external terminals are arranged at the socket terminals 18 and 19, and the ground wire external connection terminal is arranged at the position corresponding to the socket terminal 17. The protector 52 is mounted so that the end face of the case is accommodated in the recess 43.

Since the present invention is constructed as claimed in the claims of the utility model registration based on the embodiments described above, it is possible to economically prepare the materials for the connecting fittings. In addition, since the plug-in type protector is placed in the recess of the protector mounting part, the protectors installed on the base are arranged neatly in a row, giving a good appearance. Since the position when installing the safety device on the mounting part is known accurately, there is no need to apply excessive force to the socket terminal of the safety device mounting part and the external connection terminal of the safety device during installation, resulting in effects such as preventing deformation of these. play.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view of a safety device according to an embodiment of the present invention, Fig. 2 is a plan view, Fig. 3 is a side view, Fig. 4 is a vertical side view, and Fig. 5 is a partial plan view. , FIG. 6 is a partial perspective view of the lower surface, and FIG.
The figures are also a partial bottom view, FIG. 8 is a partial perspective view of the conventional safety device, and FIG. 9 is a bottom view. 1... Safety device, 2... Base, 3... Separation plug attachment part, 4... Fuse attachment part, 5... Protector attachment part, 7, 7'... Jack terminal, 10, 1
0'...Socket terminal, 17...Socket terminal for earth side external terminal, 18...Socket terminal for line side external terminal, 19...Socket terminal for line side external terminal, 22, 22...Input side connection terminal, 25,2
5...First connection fitting, 29, 29...Second connection fitting, 30, 30...Output side connection terminal, 43...
... recess, 50 ... separation plug, 51 ... fuse, 52 ... safety device.

Claims (1)

[Scope of utility model registration request] A disconnection plug attachment section for attaching a circuit isolation test plug to a base made of insulating material, a fuse attachment section for attaching a fuse, and a protector attachment section for attaching a protector consisting of an overvoltage operating element are successively installed. and a plurality of sets of these mounting parts, wherein the separation plug mounting part is provided with a pair of jack terminals arranged in two rows, and the fuse mounting part is provided with two rows of jack terminals aligned with the jack terminals. A pair of socket terminals are respectively provided on the protector mounting portion, a socket terminal for a ground side external terminal and a pair of socket terminals for a line side external terminal are provided on the lower surface of the base. A pair of connection fittings and a pair of input side connection terminal and output side connection terminal are provided to connect predetermined terminals of the separation plug attachment part, fuse attachment part and protector attachment part, corresponding to the arrangement positions of the terminals and socket terminals. In the safety device arranged in two rows, each of the pair of socket terminals for line side external terminals of the protector mounting portion is connected to the jack terminal of the separation plug mounting portion arranged in the two rows and the socket terminal for the fuse mounting portion. The connecting fittings are arranged in line with each row of socket terminals and connect these line-side external terminal socket terminals to the socket terminals of the fuse mounting portion and the output-side connecting terminals, and the connecting fittings are substantially linear. ,
Furthermore, the safety device is characterized in that the safety device mounting portion on the upper surface of the base is formed with a recessed portion having a shape corresponding to the mounting side end surface of the safety device to be mounted.