JPS6311872Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to protector panels, and more specifically, protectors that protect electronic exchanges, telephones, etc. from abnormal voltages generated in communication lines due to lightning, etc. Regarding the safety device panel for installation.

(Prior art and its problems) In recent years, with the computerization and digitalization of automatic telephone exchanges, so-called electronic exchanges have become widely used. Due to miniaturization, the entire device is being improved day and night to become smaller, higher density, and larger capacity.

On the other hand, this type of switch protects the switch, as well as individual telephones and callers, from abnormal voltages that occur in communication lines due to a rise in the ground potential of high-voltage electrical stations during lightning or ground faults in power transmission lines. ,
It is common to attach a protector consisting of a safety element such as an arrester or a varistor for absorbing abnormal voltage to each line. This protector is normally formed to be detachable from a main distribution frame (MDF), an intermediate distribution frame (IDF), a protector panel, or the like.

However, in the past, if the protector was not properly installed, a situation could occur where the protector was not connected between the outside line terminal and the ground, and this could result in abnormalities intruding from the outside line side communication line. There was a problem in that voltage was applied to extension exchanges, telephones, etc., making it impossible to protect various equipment and the human body.

In addition, in the main distribution board mentioned above, the internal wiring structure for connecting the protector is complicated, so
The main distribution board and the like inevitably become larger, which hinders higher density and miniaturization when installed in electronic exchanges.

This invention was proposed to solve the above problems, and its purpose is to connect the protector between the outside line side and the ground, even if the protector is not completely installed. It reliably protects the side switching equipment, etc. from abnormal voltages, and when connecting the protector with the communication lines on the outside line and extension side, the wiring space inside the protector panel is reduced, making it more compact and high-density. The purpose of the present invention is to provide a safety device panel with a simple configuration that can be easily installed in an electronic exchange.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes an insulating substrate, a plurality of partition plates erected at regular intervals on the substrate, and these partitions. an insulating separator disposed above the substrate between the plates; an insulating separator provided upright on the substrate and penetrating the separator, and communication lines on the outside line side and the internal line side connected to the base, respectively; a long external line side pin terminal and an internal line side pin terminal connected to one end of a safety element in a protector mounted from above the separator; and a grounding contact piece to which a grounding terminal extending vertically from the lower end of the protector is connected when the protector is connected to one end.

(Function) According to the present invention, by installing the protector from above the separator, the earth terminal and the ground contact piece of the protector are first electrically connected, and the long outer wire side pin terminal is attached to the safety element. connected to one end of the Therefore, even if the protector is not fully installed and the outside line side and the internal line side are cut off, a safety element is connected in series between the communication line on the outside line side and the ground, and the outside line side is disconnected. Abnormal voltage generated on the communication line can be reliably released to the ground side.

Further, if the protector is pushed further toward the separator, the short inner line side pin terminal is connected to the outer line side pin terminal via one end of the safety element, and the outer line side and the inner line side are electrically connected, The safety element remains connected between these lines and ground.

(Example) An example of the present invention will be described below with reference to the drawings.

First, FIG. 1 shows a plan view. In the figure, 1 is a substantially rectangular board, and side plates 2 and 3 are respectively provided on a pair of long sides of this board 1. , a plurality of partition plates 4 are erected at equal intervals from each other so as to be perpendicular to the side plates 2 and 3.
Further, on the surface of the substrate 1 surrounded by the side plates 2, 3 and the partition plate 4, as shown in FIG.
A, 5b are erected in large numbers.

Here, two of the long pin terminals (external line side pin terminals) 5a arranged at equal intervals along the partition plate 4, and two short pins adjacent to these pin terminals 5a. What is the terminal (extension side pin terminal) 5b?
It constitutes a pin terminal group 5 for one telephone line connected to a protector 13, which will be described later.For example, five protectors 13 for five lines are lined up between adjacent partition plates 4. Five pin terminal groups 5 are arranged for connection.

Furthermore, an insertion hole 1a is provided approximately in the center of each of the four pin terminals 5a, 5b constituting one pin terminal group 5.

Next, 6 is a separator that is removably attached above the substrate 1 between the partition plates 4. It is composed of a base piece 6a and a supporting piece 6b extending vertically from the center thereof, and has a substantially T-shape as a whole. The separator 6 is divided into five parts along its length, each corresponding to one telephone line, and the base piece 6a has through holes that match the pin terminals 5a and 5b.
c and an insertion hole 6d that communicates with the insertion hole 1a.

Furthermore, as shown in FIG. 2, a plurality of ground contact pieces 7 are provided on the back surface of the substrate 1, corresponding to the individual separators 6 on the front surface of the substrate 1. These ground contact pieces 7 are made by, for example, superimposing two narrow conductive plates by spot welding or the like, and the ground contact pieces 7 of the protector 13, which will be described later, are provided at positions corresponding to the insertion holes 6d and 1a. Ring portions 7a for receiving the tips of the terminals 13g are formed at regular intervals. In addition, one of the conductive plates facing these ring portions 7a has a ring portion 7a.
A protrusion 7b is provided to protrude in the direction a. As shown in FIG. 3, the grounding contact piece 7 is disposed so as to be sandwiched between a plurality of support protrusions 1b protruding from the back surface of the board 1. It can be attached to the substrate 1 by soldering the end of 7 to the common ground plate 8. Note that both ends of the common ground plate 8 are electrically connected to the ground connection part 9. Further, in FIG. 3, 10 indicates a back cover.

Referring again to FIG. 1, slits 2a and 3a for leading in communication lines are formed in the side plates 2 and 3, respectively, so as to communicate with the space between the inner partition plates 4. These slits 2a, 3a
For example, one slit 2a is for drawing in the communication line 11a on the extension side of a switchboard, telephone, etc., and the other slit 3a is for drawing in the communication line 11b on the outside line side. Each bundled communication line 11a, 11b has the wire of one communication wire 11a at the base of the short pin terminal 5b, and the wire of the other communication wire 11b at the base of the long pin terminal 5a. Wrapping connection is made. Here, the length of the separator 6 is set shorter than the length between the side plates 2 and 3, and each slit 2
Numbers such as "1, 2, 3, . . . , 19, 20" are attached to the exposed end surface of the board 1 in the vicinity of a and 3a, making it easier to connect wires. It is being In addition, marks such as "L" (Line) and "T" (Tel.) are placed on the end surface of the board 1 near the ends of the side plates 2 and 3 to distinguish between the outside line side and the inside line side. ing. Further, mounting holes 12 for mounting safety device panels according to the present invention are formed at both ends of the substrate 1, respectively.

In addition, in the present invention, main constituent members such as the substrate 1, side plates 2 and 3, partition plate 4, and separator 6 are planned to be formed of an insulating material such as synthetic resin.

As shown in FIGS. 4 and 5, a protector 13 is mounted on each separator 6 disposed in a space partitioned by the partition plate 4 for each line. As is well known, these protectors 13 connect safety elements (not shown) for absorbing abnormal voltages such as gas arresters and varistors mounted on internal printed circuit boards, etc. to communication lines 11a and 11b and ground contacts. The structure for connecting these safety elements to the pin terminal group 5 and the ground contact piece 7 will be described in detail below.

That is, as shown in FIG.
comprises a connector part 13a provided at the lower end and insertable between the partition plates 4, and a cover 13b in which a security element is housed.
Guide holes 13c and 13d for receiving pin terminals 5a and 5b are provided in the inside of a, and jack terminals 13e and 13f are arranged along the inner surfaces of these guide holes 13c and 13d, respectively.
Further, a common terminal 13h is attached, which is electrically connected to a ground terminal 13g serving as a ground plug, which is vertically provided from the lower end surface of the connector portion 13a.

Note that a safety element such as an arrester is connected between the jack terminals 13e, 13f and the common terminal 13h.

Next, the operation when one protector 13 is mounted in this embodiment will be explained with reference to FIGS. 6 and 7. First, as shown in FIG. 6A, the protector 13 is inserted between the partition plates 4 so that the earth terminal 13g of the protector 13 is inserted through the insertion holes 6d and 1a. At this time, it is necessary to guide the tip of the pin terminal 5a into the guide hole 13c at the same time. When the safety device 13 is inserted slightly in this way, the neck 13i at the tip of the ground terminal 13g engages with the protrusion 7b of the ground contact piece 7, so that a so-called click action is obtained, and the earth terminal 13g and the ground contact piece 7
are electrically connected, and the protector 13 becomes temporarily fixed.

In this state, one pin terminal 5a is connected to the jack terminal 13e, and the other pin terminal 5b is not connected to the jack terminal 13f. That is,
The connection state of each pin terminal 5a, 5b at this time is as shown in FIG. The safety element 20 is connected in series between the terminal 11b and the ground, and the abnormal voltage generated in the communication line on the external line side is reliably released to the ground side, and this abnormal voltage is transferred to the jack terminal 13f and the pin terminal on the internal line side. 5b can be prevented from penetrating into the extension line side through the gap.

Further, when the protector 13 is further pushed in and brought into contact with the base piece 6a of the separator 6 as shown in FIG.
3F, and of course the outside line side and the extension line side are electrically connected,
Between each communication line 11a, 11b and the ground terminal 9, there are pin terminals 5a, 5b, jack terminals 13e, 1
3f, a common terminal 13h, a ground terminal 13g, a ground contact piece 7, and a common ground plate 8 to which a predetermined safety element is connected.

(Effects of the invention) As detailed above, according to the invention, the outside line side and the internal line side are cut off when the protector is insufficiently installed and its ground terminal is only connected to the ground contact. However, at the same time, the long external line side pin terminal is connected to one end of the safety element, and the safety element is connected between the external line side and ground, so that abnormal voltage generated on the communication line on the external line side is The path of external line side pin terminal → safety element → earth terminal → earth contact can be ensured to escape to the ground, and the influence of this abnormal voltage can be prevented from reaching various equipment on the internal line side and the caller. You can be sure of everything.

In addition, the pin terminals on the external line side and internal line side can be used for both communication line connection and security element connection.
Moreover, since these wirings can be placed above and below the separator, the planar space for wiring inside the protector panel can be minimized, and the protector panel can be made smaller. Therefore, it is easy to install it in electronic exchanges which are becoming smaller and more dense, and it is also convenient to store and transport the safety panel itself, thereby reducing the cost required for these.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention: Fig. 1 is a plan view, Fig. 2 is an exploded perspective view of the main parts, Fig. 3 is a partially cutaway bottom view, and Fig. 4 is a side view. , FIG. 5 is a right side view of FIG. 4, FIGS. 6A and 6B are explanatory diagrams of the operation, and FIG. 7 is an explanatory diagram showing the connection state of the pin terminals corresponding to FIG. 6A. 1... Board, 4... Partition plate, 5... Pin terminal group, 5a, 5b... Pin terminal, 6... Separator, 7... Earth contact piece, 11a, 11b... Communication line, 13... Security 13g...Earth terminal.

Claims (1)

[Claims for Utility Model Registration] An insulating substrate, a plurality of partition plates erected at regular intervals on the substrate, and a plurality of partition plates arranged above the substrate between these partition plates. an insulating separator that is erected on the substrate and passes through the separator, and external line side and internal line side communication lines are respectively connected to the base, and a safety device in a protector that is installed from above the separator. a long external line side pin terminal and an internal line side pin terminal connected to one end of the element, and a lower end of the protector attached to the board and when the external line side pin terminal and one end of the safety element are connected. A safety device panel comprising: a grounding contact piece to which a grounding terminal is connected vertically from the protection panel;