JP2001186654A - Arrester module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable access to U slit terminals inside a connector block, and connection of jumper wires to the U slit terminals, even when an arrester module which is attached to the connector block for connecting switchboard-side communication wires and subscriber-side communication wires and protects apparatuses inside a station from heavy current is in a state of being attached to the connector block, in a place where communication devices such as a PBX, a telephone switchboard, etc., are installed. SOLUTION: A printed wiring board 30 to which two surge protective elements S1, S2, two connecting terminal armatures 31 and a grounding terminal armature 32 are fitted is put in a housing 33, 34. These connecting and grounding terminal armatures extend downwards as against the housing. The arranged positions of the connecting and grounding terminal armatures as against the housing are one-sided from the vertical center line of the housing when looked on the side surface of the housing, and besides the connecting terminal armatures are positioned more outside than the grounding terminal armature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a connector block for connecting a communication line on an exchange to a communication line on a subscriber side in a place where a communication device such as a private branch exchange (PBX) or a telephone exchange is installed. In addition, the present invention relates to an arrester module for protecting an exchange or the like from an excessive current due to lightning strike or the like.

[0002]

2. Description of the Related Art FIGS. 16 and 17 show an example of a conventional arrester module together with a connector block and a mount for supporting the connector block. The communication line connecting device 10 including such elements constitutes a main distribution frame (MDF) generally installed in the exchange. As shown in FIG. 16, the basic configuration of the communication line connection device 10 includes a connector block 12 formed of an insulating material such as a resin, and a surge protection element for preventing damage due to excessive current caused by lightning and the like. The arrester module 14 is a ground terminal 16 connected to the arrester module 14. Reference numerals 11a and 11b denote external communication lines, reference numerals 13a and 13b denote jumper lines connected to the internal communication lines, and the above members are mounted on a mount 15.

FIG. 17 is an exploded perspective view of FIG. 16, in which a ground terminal 16 and an arrester module 14 are engaged and mounted on a connector block 12 as shown. Inside the connector block 12, a plurality of pairs of opposed U slit terminals are arranged in a line.

[0004] The U-slit terminal has a U-slit at the upper end thereof, and the U-slit of one of the U-slit terminals of the set of U-slit terminals has the above-mentioned external communication line 11a or 11b, and the other has the other. The above-mentioned jumper wire 13a or 13b is connected to the U slit of the U slit terminal. This U slit terminal is connected to the connector block 1
2 are mounted so that the U-slit is located in the concave portion of the concavo-convex portion formed opposite to the upper end portion, that is, the portion of the connection groove 20.

The external communication line 11 and the jumper line 13 are connected to the U-slit portion at the connection groove 20 from the outside of the connector block 12 and are in a loaded state. Further, the substrate portion 22 of the arrester module 14 is inserted between the contact pieces of the U-slit terminals, and the U-slit terminals are connected to each other. That is, arrester module 1
A contact pattern for electrically connecting opposing U-slit terminals is formed on the substrate portion 22 provided on the substrate 4.

In the figure, two communication line contacts 24 are shown.
a and 24b are provided. That is, this contact is also provided on the opposite surface side, and the U-slit terminals facing each other are connected by the contacts on the front and back surfaces of the substrate portion 22. Therefore, the outside communication line 13a connected to the outside communication line from a home telephone or the like connected to the U slit terminal,
13b and jumper line 1 connected to the exchange side of the exchange
1a and 11b are electrically connected.

The ground terminal 16 is provided with a connection end 16a at the upper end thereof. When the arrester module 14 is mounted on the connector block 12 (FIG. 1).
6), and this connection end 16a is connected to the arrester module 1
4 and is connected to an arrestor module 14 by being inserted into a ground connection portion (not shown) provided in the arrester module 4. Also, the insertion end 16 of the ground terminal 16 into the connector block 12
The portions b and 16c are connected to the mount 15 in the mounted state shown in FIG. 16, so that a ground connection is made.

Generally, the above connector block 12
For example, it is configured to be compatible with a large number of lines such as ten lines. In the connector block, the pair of U-slit terminals are arranged so as to face each other so as to resiliently contact each other. Such a set of U-slit terminals is arranged in parallel, and A set of two matching U-slit terminals is used for one communication line.

FIG. 18 is a circuit diagram showing a state in which the arrester module 14 is mounted on the connector block 12 in one communication line. Reference numeral 25 denotes, for example, a home telephone, and reference numeral 26 denotes an exchange. , The switchboard 26 and the connector block 12 are located at a communication device installation location,
For example, in an exchange. The connector block 12 has U slit terminals U1 to U4 for one communication line, and U1 and U3 and U2 and U4 resiliently contact each other at locations C1 and C2.

As shown, the arrester module has two connection terminals T1, T2 and one ground terminal T.
3, two surge protection elements S1 and S2 are connected in series between the two connection terminals T1 and T2, and a ground terminal T3 is connected to the connection between the two surge protection elements. ing. When such an arrester module for one line is mounted on the connector block 12,
Two connection terminals T1, T2 of the arrester module
Contact the U-slit terminals U1 and U2, respectively, and the ground terminal T3 is grounded via the ground terminal 16 provided on the connector block 12. Therefore, the surge current generated in the communication line flows to the ground terminal T3 via the surge protection elements S1 and S2, and further to the ground.

[0011]

SUMMARY OF THE INVENTION Connector block 12
Is provided with an insertion port 12a (FIG. 17) corresponding to the contact portion of the two U-slit terminals facing each other. The board portion 22 of the conventional arrester module 14 is inserted from this insertion port, and the contact portions C1, C2 It is made to contact the U-slit terminal. Therefore, once the arrester module 14 is mounted on the connector block 12,
The above-mentioned insertion port 12a and the connection groove 20 on both sides of this insertion port are closed, and unless the arrester module is removed, the line side (phone side) using the contact portion of the U slit terminal is connected. There are drawbacks in that it is not possible to perform a separation test with the equipment side (exchanger side) and to connect a jumper wire to the U slit of the U slit terminal.

Therefore, an object of the present invention is to perform a cutting test by separating the contact portion of the U-slit terminal without removing the arrestor module even after the arrester module is mounted, and the U-slit terminal of the U-slit terminal. To provide an arrester module capable of connecting a jumper wire to the arrestor module.

[0013]

In order to achieve the above object, the invention according to claim 1 of the present invention relates to a wiring board provided at a place where a communication device such as a PBX or a telephone exchange is installed. For connection of communication lines between the subscriber side and the exchange side, it is used by being attached to a connector block to be attached, and the connector block has a large number of sets of U-slit terminals arranged in parallel. The two U-slit terminals of each set facing each other have their contact pieces in the center so that they can be separated from each other, and each has a locking piece with the connector block on the outside, When mounted on such a connector block, two sets of U-slit terminals for one communication line are connected to two locking pieces on the same side and two series surge protection elements are connected to the two sets of U-slit terminals. Switch-side equipment from high current generated in a communication line, having two connection terminal contact pieces connected in parallel between the pieces and a ground terminal contact piece connecting two surge protection elements to a ground member of the connector block. Arrestor module for protecting the power supply, wherein the two surge protection elements, the two connection terminal pieces and the ground terminal piece are mounted on a printed wiring board, and the printed wiring board is housed in a housing. In the arrestor module, the two connection terminal pieces and the ground terminal piece extend downward with respect to the housing, and the position of the connection terminal piece and the ground terminal piece with respect to the housing is determined by the housing length when viewed from the side of the housing. It is biased to one side with respect to the center line, and the connection terminal contact piece is grounded Characterized in that from Minaru contact piece is located outside.

When formed in this manner, the arrester module connects the two connection terminal pieces and the ground terminal piece to the two U-slit terminals and the ground piece of the connector block at a position near the upper edge of the connector block. The other half of the arrester module housing, i.e., the half of the arrestor module housing on the side of the housing which is not provided with the connection terminal contact and the ground terminal contact with respect to the longitudinal center line of the housing, is provided with an insertion hole for the connector block. The arrestor module can be mounted on the connector block without blocking the insertion port. Therefore, even after the arrester module is installed, the insertion hole of the connector block and one of the connection grooves are open.Therefore, the cutting test using the insertion hole and the connection work by pushing the jumper wire into the connection groove are performed. It can be carried out.

According to a second aspect of the present invention, the mounting positions of the connection terminal contact pieces and the ground terminal contact pieces on the printed wiring board are shifted to one side with respect to the vertical center line of the printed wiring board. A housing for accommodating the printed circuit board has a housing base for holding the printed circuit board, and a housing lid surrounding the printed circuit board and engaged with the housing base. The housing base is connected to the housing base. The arrestor module can be compared if it has a guide hole for passing the terminal contact piece and the ground terminal contact piece, and the formation part of this guide hole is deviated to one side with respect to the vertical center line of the housing when viewed from the side of the housing. It can be formed compactly.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In each of the drawings, FIG. 1 is a side view of a printed wiring board mounted with a surge protection element, two connection terminal pieces, and one ground terminal piece in an arrester module of the present invention, and FIG. Front view, FIG. 3
4 is a side view of a housing base portion of the arrester module of the present invention, FIG. 4 is a front view of the base portion, FIG. 5 is a side view of a housing lid portion of the arrester module of the present invention, and FIG. 6 is a front view of the lid portion. FIG. 7, FIG. 7 is a side view of the arrester module of the present invention, FIG.
9 is a rear view of the module, FIG. 10 is a plan view of FIG. 7,
11 is a bottom view of FIG. 7, FIG. 12 is a plan view of a connector block to which the arrester module of the present invention is mounted, FIG. 13 is a front view of the connector block, and FIG.
FIG. 15 is a cross-sectional view showing a cross section taken along line V-XIV of two adjacently arranged connector blocks, and FIG. 15 is a view showing a set of opposing U among U slit terminals arranged in the connector block.
16 is a perspective view showing a slit terminal, FIG. 16 is a perspective view showing an example of a conventional arrester module together with a connector block and a mount supporting the connector block, FIG. 17 is a perspective view showing each component shown in FIG. FIG. 18 is a circuit diagram showing a state in which an arrester module is mounted on a connector block in one communication line.

First, in FIGS. 1 and 2, reference numeral 30 denotes a printed wiring board, and two PNPNs are provided on the upper surface thereof.
The P-type semiconductor surge protection elements S1 and S2, two connection terminal contact pieces 31 and one ground terminal contact piece 32 are mounted. The protection element and the contact piece are connected by a printed wiring and a through hole on the substrate so as to form a circuit as shown in FIG.

As can be seen from FIG. 1, the surge protection elements S1 and S2 are disposed to the upper right of the substrate as viewed from the side of the substrate 30, and the connection terminal contact piece 31 and the ground terminal contact piece 32 are connected to the substrate. 30 are arranged so as to be aligned and protruded downward on the left side of the central longitudinal axis. The upper left part is cut off. The printed wiring board 30 formed in this manner is held by the housing base 33 shown in FIGS.

The insulating housing base 33 is formed integrally with the printed wiring board 30 on the base 33a.
It has support pieces 33b and 33c for holding, and
At the lower part of 3a, an insertion plug piece 33d for inserting the housing into the connector block by being inserted into the receiving hole of the connector block, a projection 33e for holding the ground terminal contact piece 32, and the connection terminal contact piece 31
And a projection 33f for holding a part of the The protrusion 33e is formed through the base 33a, has a hole for loosely fitting the ground terminal contact piece 32, and the protrusion 33f is also formed through the base 33a. A hole for inserting the connection terminal contact piece 31 is provided.

As is apparent from FIG. 3, the insertion plug piece 33d is formed substantially at the center when the housing base portion 33 is viewed from the side, and the above-mentioned projections 33e, 3d are formed.
3f is formed so as to be deviated to the left side with respect to the plug piece.

When assembling the arrester module, the printed wiring board 30 shown in FIGS.
3a and the housing base portion 33 shown in FIGS. 3 and 4 so as to be inserted into holes provided in the projections 33e and 33f, respectively, so that the substrate 30 is sandwiched between the support pieces 33b and 33c and held upright. It is attached. Next, the insulating housing cover 34 shown in FIGS. 5 and 6 is put on the substrate 30, and the lower part of the housing cover 34 is
3a, notches 34a, 34b provided on both sides of the lower end of the side portion of the housing lid portion 34 engage with raised portions 33g, 33h formed on the housing base portion 33,
Projection piece 34 provided in the middle of notches 34a, 34b
c engages with the base portion 33a at a portion between the raised portions 33g and 33h, and a locking hole 34d provided at the center of the protruding piece 34c engages with a locking claw 33i provided on the base portion 33a, Thus, the housing lid 34 is attached to the housing base 33.

In FIGS. 5 and 6, reference numeral 34e denotes a knob provided on the housing lid, and this knob is provided at a location on the substrate 30 which covers the surge protection element S1.

The assembled arrester module 35 is shown in FIGS.
As shown in FIG. 11, and particularly as shown in FIGS. 7 and 8, the connection terminal contact piece 31 projects downward from the above-mentioned projection 33 f, and the ground terminal contact piece 32 becomes the projection 33
e.

This arrester module 35 can be mounted on a connector block as shown in FIGS. The connector block 36 holds therein a large number of sets of U-slit terminals arranged in parallel as described above. Fig. 1
It is shown in FIG. Two U-slit terminals 3 facing each other
7a and 37b have locking pieces 37a1 and 37b1 with the connector block on the outside, respectively, and have contact piece forming parts 37a2 and 37b2 on the inside. Outer locking piece 37
a1, 37b1 and inner contact piece forming portions 37a2, 37b2
Are connected in an inverted U-shape at the top, respectively.
U-slits 37a3 and 37b3 for coupling with a jumper line, a communication line, and the like are formed in this connection portion.
The contact piece forming portions 37a2 and 37b2 have contact pieces 37a respectively.
4, 37b4 are provided, and these contact pieces are brought into contact with each other so as to be separable.

The U-slit terminals 37a and 37b correspond to FIG.
As shown in FIG. 4, the connector block 36 is attached to the connector block 36. For this attachment, the connector block 36 has, on one side of its upper edge, an insertion plug piece 33d formed on the arrester module 35, and protrusions 33e, 33f. There is provided a receiving hole into which is inserted. Then, in the mounted state, the one connection terminal contact piece 31 of the arrester module 35 passes through the gap 37b5 above the U-slit terminal 37b, and comes into conductive contact with the inside of the locking piece 37b1. Similarly, the other connection terminal contact piece 31 makes conductive contact with an adjacent pair of U slit terminals which together constitute one communication line. In addition, the ground terminal contact piece 32 comes into conductive contact with a ground terminal (see the ground terminal 16 in FIG. 16) attached to the connector block.

As is clear from FIGS. 12 and 14,
Arrester module 35 for connector block 36
In the mounted state, the inward end of the arrester module 35 has not reached the opening 36a above the U-slit terminal, and the arrestor module 35 mounted on the adjacent connector block 36 (right connector block in FIG. 14). The outer end does not reach above the gap 37a5 above the U-slit terminal 37a. Therefore, with the arrester module mounted, a test plug is inserted through the opening 36a and inserted between the contact pieces 37a4, 37b4 to perform a test, or a cut plug is inserted into the contact pieces 37a4, 37b.
4 to perform a cutting test, or place the end of a jumper wire in the gap 37a5 above the U-slit terminal 37a and push the jumper wire into the U-slit 37a3 using an insertion tool to connect. It can be performed.

[0028]

According to the present invention, the line side and the equipment side can be separated even when the arrester module is mounted.
Also, a jumper wire connection work to one U-slit terminal becomes possible, and simplification of the work in the MDF and shortening of the work time are achieved.

[Brief description of the drawings]

FIG. 1 is a side view of a printed wiring board mounted with a surge protection element, two connection terminal pieces, and one ground terminal piece in an arrester module of the present invention.

FIG. 2 is a front view of the substrate.

FIG. 3 is a side view of a housing base in the arrester module of the present invention.

FIG. 4 is a front view of the base portion.

FIG. 5 is a side view of a housing lid in the arrester module of the present invention.

FIG. 6 is a front view of the lid.

FIG. 7 is a side view of the arrester module of the present invention.

FIG. 8 is a front view of the module.

FIG. 9 is a rear view of the module.

FIG. 10 is a plan view of FIG. 7;

FIG. 11 is a bottom view of FIG. 7;

FIG. 12 is a plan view of a connector block on which the arrester module of the present invention is mounted.

FIG. 13 is a side view of the connector block.

FIG. 14 is a sectional view taken along line XIV-XIV in FIG.
It is sectional drawing shown about two adjacently arranged connector blocks.

FIG. 15 is a perspective view of a set of opposed U-slit terminals among U-slit terminals arranged in the connector block.

FIG. 16 is a perspective view showing an example of a conventional arrester module together with a connector block and a mount supporting the connector block.

FIG. 17 is an exploded perspective view showing each component shown in FIG. 16;

FIG. 18 is a circuit configuration diagram showing a state in which an arrester module is mounted on a connector block in one communication line.

[Explanation of symbols]

 S1, S2 Surge protection element 30 Printed wiring board 31 Connection terminal contact piece 32 Ground terminal contact piece 33 Housing base part 34 Housing lid part 35 Arrester module 36 Connector block 37a, 37b U slit terminal

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yukio Watanabe 2-4-6 Shibadaimon, Minato-ku, Tokyo Toyokuniru Tamachi Electric Co., Ltd. F-term (reference) 5G013 AA05 BA02 CB21 DA08 5K073 AA08 CC41 CC45 GG03 GG23

Claims (2)

[Claims] 1. A wiring board provided at a place where a communication device such as a PBX or a telephone exchange is installed. The wiring board is attached to a connector block to be attached for connection of a communication line between a subscriber side and an exchange side. The connector block is used in parallel, and incorporates a large number of sets of U-slit terminals in parallel, each of which faces two pairs.
The two U-slit terminals have their contact pieces in the center so that they can be cut off from each other, and each has a locking piece with the connector block on the outside, and when mounted on such a connector block, Two connection terminals connected to the two above-mentioned locking pieces on the same side of two sets of U-slit terminals for communication lines, and connecting two series surge protection elements in parallel between the two locking pieces. A piece,
An arrester module for protecting an exchange-side device from a high current generated in a communication line, the arrester module including a ground terminal contact piece for connecting two surge protection elements to a ground member of a connector block. In a arrester module in which a surge protection element, two connection terminal pieces and a ground terminal piece are mounted on a printed circuit board, and the printed circuit board is housed in a housing, two connection terminal pieces and a ground terminal are provided. The contact piece extends downward with respect to the housing,
The arrangement position of the connection terminal piece and the ground terminal piece with respect to the housing is deviated to one side with respect to the vertical center line of the housing when viewed from the side of the housing, and the connection terminal piece is located outside the ground terminal piece. An arrester module, characterized in that: 2. The mounting position of the connection terminal contact piece and the ground terminal contact piece on the printed wiring board is shifted to one side with respect to a vertical center line of the printed wiring board, and a housing for accommodating the printed wiring board is provided. A housing base for holding the printed wiring board; and a housing lid surrounding the printed wiring board and engaged with the housing base. The housing base is connected to the connection terminal contact piece and the ground terminal connection. 2. The arrester module according to claim 1, wherein the arrester module has a guide hole through which the piece passes, and a formation portion of the guide hole is deviated to one side with respect to a vertical center line of the housing as viewed from a side surface of the housing.