JP2003174722A - Protector sub-module having flat spring earth terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the workability of attaching a protector sub-module to an attachment rack. <P>SOLUTION: A protector sub-module protects a communication apparatus from the invasion of an overvoltage and an overcurrent entering via a communication line, has an earth terminal 14 which is connected electrically to an earth pattern protruding from the frame 152 of the protector sub-module, comprises flat springs 141 and 142, and is fixed to an attachment rack 17 to which the protector sub-module is attached so as to be brought into elastic contact with the attachment rack 17. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device protector installed in a telephone office or the like in order to prevent an overvoltage / overcurrent from entering a communication line from flowing into the communication device.

[0002]

2. Description of the Related Art Conventionally, in order to prevent an overvoltage / overcurrent from entering a communication line from flowing into a communication device,
A protector for communication equipment is installed in the telephone office. This protector for communication equipment is constructed by stacking protector sub-modules in multiple stages.

FIG. 7 shows a conventional protector sub-module 20.
0 shows an assembled plan view of 0. As shown in FIG.
1 is a printed wiring board, 202 is a multi-attachable U-slit terminal used as a terminal for connection to an incoming line, which is soldered to the printed wiring board 201 and connected to the incoming line through a line entrance unit 205 by a jumper wire. It is a thing. Reference numerals 206 and 207 are frames, 208 is an exchange side connector connected to the exchange side, 209 is a security element, 2
10 is a test bullet unit. The passage opening unit 205 is attached in a state of being sandwiched between the two printed circuit boards 201.

FIG. 8 is an assembled perspective view of a protector for communication equipment using a conventional submodule. FIG. 8 shows a state in which 16 protector sub-modules 200 are stacked.
As shown in FIG. 8, stacked protector sub-modules 2
00 is attached to the mount (MTG (MOUNTING)) 1
7, the side plate 18, the front stopper (not shown), the wire arranging plate 20, the index holder 21, and the marking plate 22 are attached and assembled to form the protector 102 for communication equipment which accommodates 128 lines.

The conventional mounting of the sub-module 200 to the mounting base 17 is carried out by fixing the sub-module 200 to the mounting base with screws 32 using the screw holes 31 provided in the side plate 171 of the mounting base 17. The screw 302 is electrically connected to a ground terminal (not shown) of the electric circuit of the protector sub-module 200 and grounded via the mounting base 17.

[0006]

By the way, in the conventional protector for communication equipment, a plurality of sub-modules are mounted on the mount 1.
As described above, when attaching to 7, the communication device protector is assembled one by one because it is fixed to the screw hole provided in the side plate 171 of the mounting base with a screw and grounded through the screw as described above. Since the sub-module must be fixed to the mounting base with screws, there is a problem that assembly work requires time and labor.

Therefore, the present invention has been made in view of the above-mentioned problems, and it is possible to fix the protector sub-module to the mounting base and to construct the ground terminal of the electric circuit of the protector sub-module. It is an object of the present invention to provide an excellent mounting structure of.

[0008]

According to the first aspect of the present invention, there is provided a protector for preventing an overvoltage / overcurrent from entering a protector submodule from a communication line into a communication device. In the sub-module, a plurality of U-slit terminals that are used as terminals for connecting incoming lines and are arranged in parallel, a security element electrically connected to each of the U-slit terminals, and a switch electrically connected to the security element. Of a switch side connector used as a terminal for outgoing line connection on the side and two printed wiring boards on which a wiring pattern and a ground pattern are mounted, and electrically connected to the ground pattern of the protector sub-module. An earth terminal protruding from the frame is provided, the earth terminal is formed of a leaf spring, and the protector sub-module is attached to the earth terminal. Elastically the contacted to mounting frame is solved by that so as to fix.

According to a second aspect of the present invention, the protector for communication equipment according to the present invention is a protector sub-module for preventing an overvoltage / overcurrent from entering a communication line from flowing into the communication equipment. And a plurality of the protector sub-modules mounted on a mounting base, the protector sub-module comprising a plurality of U-slit terminals arranged in parallel and used as terminals for incoming line connection, A security element electrically connected to each U-slit terminal, an exchange side connector electrically connected to the security element and used as an outgoing line connection terminal on the exchange side, a wiring pattern and a ground pattern are mounted. And two printed wiring boards and a leaf spring electrically connected to the earth pattern and protruding from the frame of the protector sub-module. Comprising a grounding terminal that resiliently contact with the mounting frame, the mounting frame is characterized by having an opening grounding terminal is inserted and fixed in said sub-module.

In the present invention, the earth terminal is formed of a leaf spring, and the leaf spring is used to attach and fix the protector sub-module to the mounting base.

Therefore, the protector sub-module can be mounted on the mounting base very easily, and the workability of assembling the protector for communication equipment is improved.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 11 are views for explaining a protector for communication equipment of the present invention.

FIG. 1 is a view showing a protector sub-module 100, (a) is a plan view, (b) is a rear view, and (c).
Is a front view, (d) is a left side view, and (e) is a right side view. 2 is a diagram for explaining a printed wiring board of the protector sub-module of the present invention, and FIGS. 2 (a) and 2 (b) are diagrams for explaining the printed wiring board 1A. The printed wiring board 1B is the printed wiring board 1A.
Since the configuration is similar to that, the description thereof is omitted here. Further, FIG. 7A shows the A surface of the printed wiring board 1A, and FIG. 7B shows the B surface of the printed wiring board 1A.

As shown in FIGS. 1 and 2, the protector sub-module 100 is composed of two printed wiring boards, a printed wiring board 1A and a printed wiring board 1B.

In FIG. 1, 100 is a protector sub-module, 1A and 1B are printed wiring boards, 2a, 2b, ...
2n is a contact terminal of the test bullet unit 3 soldered to the printed wiring boards 1A and 1B. 4a, 4b, ...
.... 4n is a security element and 5 is a printed wiring board 1
A wiring pattern 6 is formed on the back side of the wiring patterns on the front side formed in A and 1B. 7 and 8 are front side ground patterns formed on the printed wiring boards 1A and 1B, respectively.
9n are U-slit terminals on the subscriber side, and 10a, 10b ... 10n are terminals on the exchange side. The printed wiring boards 1A and 1B are both double-sided through-hole substrates, and the mounting surface of the security element 4 is the (A) surface and the back surface side is the (B) surface, as shown in FIG.

In FIG. 1, 12 is a U-slit housing, 13 is a passage opening unit, 14 is a ground terminal, 151 and 152 are frames, and 16A and 16B are exchange side connectors. With these parts, 16
A line protector sub-module 100 is configured.

The test bullet unit 3 is for performing a disconnection test of the communication line by inserting a test plug (not shown) to open the contact. Security elements 4a, 4b, ..., 4n
Is to prevent the breakdown of the outgoing line on the exchange side due to a surge voltage or the like.
The printed wiring board 1 is soldered to adjacent portions (9a, 9b, ..., 9n). The security element 4 may be a semiconductor security element such as a bidirectional pnpn surge protection device, an avalanche diode, a zinc oxide varistor, or a thin or small gas arrester. Moreover, you may comprise the multistage protection circuit which combined these.

In this embodiment, the security element 4 (4a, 4a, 4a
b, ..., 4n) are not arranged in a horizontal row, but adjacent protection elements 4a, 4b are arranged in a so-called zigzag pattern in which they are offset in the front-back direction (shifted in the X direction in FIG. 1). By arranging in a zigzag manner in this manner, the protector sub-modules 100 can be mounted without increasing the width dimension, and the number of communication lines can be further increased. The wiring patterns 5 and 6 electrically connect the test ammunition unit 3 and the terminals on the exchange side.

The U-slit terminal 9 is used as an incoming line connection terminal, is soldered to a position adjacent to the security element 4, and is electrically connected to the security element 4.

U-slit housing 12, frame 15
1. The frame 152 is a resin molded product and is assembled so as to surround the two printed wiring boards 1 to form a protector sub-module 100 in units of 16 lines.

Next, a circuit configuration in which the communication device protector is mounted on the communication line will be described with reference to FIG. FIG. 3 is a circuit diagram for explaining the protector for communication equipment of the present invention. Figure 3
In the figure, 32 is a subscriber's telephone, 33 is a subscriber's security device, 34 is a telephone station, and the telephone station 34 is provided with a wiring board 35, a communication device protector 101, and an exchange 37.
2 is connected to a subscriber protector 33, and the subscriber protector 33 is connected via a subscriber line 38 to a wiring board 35 provided in a telephone station 34, and the wiring board 35 and the protector sub-module 10 are connected.
0 incoming line connection terminals (U-slit terminals) 9a, 9b,
, 9n are connected by a jumper line 39, and the outgoing line connection terminals 10a, 10b, ..., 10n on the switch side of the protector sub-module 100 and the switch 37 are connected to each other.
They are connected by cable wiring 40.

The function and test of lightning surge protection will now be described with reference to FIGS. 1 and 3. Subscriber line 38
Lightning surge is induced in the protector sub-module 100
Incoming line connection terminals (U slit terminals) 9a, 9b,
.., 9n, if the lightning surge enters, the lightning surge current reaches the security elements 4a, 4b, ..., 4n, and the operation of the security elements 4a, 4b ,. The lightning surge voltage between the line connecting terminals 10a, 10b, ..., 10c and the ground 25 is suppressed below the allowable voltage of the exchange 37, and the energy of the lightning surge is grounded patterns 7 and 8 shown in FIG. , Ground 2 through ground terminal 11
Since it can be flown to 5, the exchange 37 and the worker can be protected from a lightning surge.

Further, incoming line connection terminals (U-slit terminals) 9a, 9b, ..., 9n of the subscriber line 38 and outgoing line connection terminals 10a, 10b ,.
For disconnection with 10n and connection test of the test line to one side, a test plug (not shown) having an insulating material on one side and a conductive material on the other side is inserted into the test bullet unit 3. It can be realized by

FIG. 4 is an assembled perspective view of a protector for communication equipment according to the present invention. FIG. 4 shows the protector sub-module 100.
It shows a state where 16 are stacked. Incidentally, at the time of actual use, the plug P is connected to the connectors 16A and 16B as shown in the figure.

5 and 6 are views showing a structure for mounting the protector submodule 100 according to the present invention to the ground connection terminal and the mounting base.

An earth terminal 14 is provided on the side of the protector module 100 of the present invention where the passage unit is open. As shown in detail in FIG. 6B, the earth terminal 14 is composed of a leaf spring member formed so as to project outward from an opening 152a formed in the frame 152 of the protector submodule 100. The earth terminal 14 of the present embodiment is formed by two strip-shaped leaf springs 141, 142 having a bent portion.

On the other hand, a mounting base (M for stacking the protector sub-modules 100 to form a protector for communication equipment).
An opening 172 is formed at a position of the metal side plate 171 of the DF 17 corresponding to the ground terminal. The opening 172 is for locking the ground terminal 14 of the protector sub-module 100. As shown in FIG. 6B, the two strip-shaped leaf spring members 141, 142 are located outside the opening 172. The metal side plate 171.
And the metal side plate 171 for electrically connecting the protector sub-module 100 to the mounting base 17 and connecting to the ground pattern of the electrical circuit of the protector sub-module 100. Is established.

In FIG. 6A, the protector sub-modules 100 that are stacked are mounted on the mount 17, the side plate 18,
Attach and assemble the front stopper 19, rectifying plate 20, index holder 21, and marking plate 22.
The state which formed the protector 101 for communication equipment of accommodating 56 lines is shown.

As described above, according to the protector sub-module 100 of the present embodiment, when the protector for a communication device is assembled by mounting it on the mounting base, it is not necessary to screw it as in the conventional case, and the ground terminal is used. Since it is only fixed by utilizing the elasticity of the leaf spring, the workability of mounting is greatly improved.

Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the specific embodiments, but within the scope of the gist of the present invention set forth in the claims. Various modifications and changes are possible. For example, in each of the above-mentioned examples, the protector sub-modules are all equipped with the test ammunition, but it goes without saying that the protector sub-module is not applicable. Also, in any of the above examples, the protector sub-module is shown to include a passage unit,
It is also possible to apply to a protector sub-module that does not include this passage unit.

[0032]

As is clear from the above description, according to the present invention, when the protector sub-module is mounted on the mounting base, it is only fixed by utilizing the elasticity of the ground terminal. Workability is greatly improved.

[0033]

[Brief description of drawings]

FIG. 1 is a diagram showing a protector sub-module according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a printed wiring board of the protector sub-module of the present invention.

FIG. 3 is a circuit diagram for explaining a protector for communication equipment of the present invention.

FIG. 4 is a diagram showing a state in which protector sub-modules are stacked.

FIG. 5 is a view showing an earth terminal of the protector sub-module according to the embodiment of the present invention.

FIG. 6 is an assembled perspective view (a) of a protector for a communication device according to the present invention and a diagram showing a mounting structure to a mounting base.

FIG. 7 is an assembly plan view of a conventional protector sub-module.

FIG. 8 is a view showing a protector for a communication device configured by assembling a conventional protector sub-module.

[Explanation of symbols]

1A, 1B Printed wiring board 2 contact terminals 3 Test ammunition unit 4 Security element 9 U slit terminal (terminal for incoming line connection) 10 Outgoing line connection terminal on the exchange side 13 Passage unit 16A, 16B Switch side connector 100,200 protector sub-module 101, 102 protector for communication equipment

Claims (2)

[Claims] 1. A protector sub-module for preventing an overvoltage / overcurrent from entering from a communication line from flowing into a communication device, and a plurality of U-slit terminals which are used as terminals for connecting an incoming line and are arranged in parallel, A security element electrically connected to each of the U-slit terminals, an exchange side connector electrically connected to the security element and used as an outgoing line connection terminal on the exchange side, a wiring pattern and an earth pattern are mounted. Two printed wiring boards that are connected to the earth pattern, and an earth terminal that is electrically connected to the earth pattern and protrudes from the frame of the protector sub-module, the earth terminal being formed of a leaf spring, and the protector. A protector support characterized in that it is elastically brought into contact with and fixed to a mounting base on which the submodule is mounted. Module. 2. A protector for communication equipment, comprising a protector sub-module for preventing an overvoltage / overcurrent from entering from a communication line from flowing into the communication equipment, and a plurality of the protector sub-modules mounted on a mounting base. The security device sub-module includes a plurality of U-slit terminals arranged in parallel and used as terminals for connecting an incoming line, and each U-slit terminal.
A safety element electrically connected to the slit terminal,
Two printed wiring boards on which an exchange side connector electrically connected to the security element and used as an outgoing line connection terminal on the exchange side, a wiring pattern and an earth pattern are mounted, and electrically connected to the earth pattern And an earth terminal formed of a leaf spring protruding from the frame of the protector sub-module and elastically contacting the mounting base, wherein the mounting base is an opening into which the ground terminal of the sub-module is inserted and fixed. A security device for a communication device, which has a part.