JP3357304B2 - Junction terminal board for communication line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal board used to connect a plurality of terminal devices to be installed in each room to a subscriber line in indoor wiring of a communication line, and more particularly to a terminal board connected to an ISDN. The most suitable terminal board for indoor wiring.

[0002]

2. Description of the Related Art Conventionally, as a device for connecting a plurality of terminal devices to a subscriber line, a terminal plate comprising a set of a plurality of terminal devices has been widely used (for example, Japanese Patent Laid-Open No. 8-25017).
0). This terminal plate has a function of enabling the connection of the electric wires connected to the terminal device by internally connecting the terminal devices in advance by a printed circuit board or the like, or by connecting the terminals by a user using a jumper wire. did.

[0003]

By the way, in recent years, ISD
N (Integrated Services Digital Network) has spread, but IS
In the case of a DN, the subscriber line is terminated by a digital service unit (DSU), and the DSU and the indoor wiring are connected by a modular jack. Therefore, a modular plug must be used to connect the terminal board and the DSU, and the other end of the wire having a modular plug to be connected to the modular jack of the DSU at one end is directly connected to the terminal device of the terminal board. There was inevitable inconvenience.

In the case of ISDN, a plurality of terminal devices are connected by a bus, but the existing wiring of the building is a star type wiring in consideration of a conventional home telephone and the like, and the number of cores of the cable is ISDN (4 cores). ), There is a disadvantage that the bus cannot be connected as it is and wiring must be re-wired after all. Also, as shown in FIG. 8, for existing and new telephone line piping and wiring, the openings A, B, and
It is usually a star type that concentrates on one mouth X individually from C, and there is an inconvenience that it cannot be used for bus connection as it is. That is, plumbing and wiring work is performed at a relatively early stage of new construction work before lining, but at this stage, specific terminal equipment and line types are often not determined, and as a result, It is not clear to the contractor whether to use an analog line or a digital line, as well as to connect, and the above-mentioned star-shaped piping and wiring that are easy to work and safe are apt to be used. .

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a relay branch terminal board for a communication line which can eliminate the inconvenience of the prior art at once. That is, the relay branch terminal plate according to the present invention includes a plurality of terminal units each including at least four one-touch type terminal devices having a pair of wire insertion holes through which the inserted wires can be connected to each other. Each of the terminal devices of at least one of the terminal units is internally connected to each terminal of a modular jack to be arranged on the base.

According to the relay branch terminal board of the present invention, since each terminal of the modular jack is internally connected to each terminal device of at least one terminal unit, a four-core terminal having modular plugs at both ends is provided. The effect that the DSU and the terminal board can be connected only by preparing the connection cord is produced.

In addition, since a plurality of terminal units each having at least four one-touch type terminal devices having a pair of electric wire insertion holes through which the inserted electric wires can conduct each other are provided on the base, the user is required to use the terminal units. By connecting the terminal devices of each terminal unit to each other by using a jumper wire, as described later, an effect of enabling a bus connection using existing star-type wiring is produced.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a relay branch terminal board for a communication line according to an embodiment of the present invention. This terminal plate comprises a housing-like base 1, a terminal unit 10 and a modular jack 40 housed therein.

The above-mentioned terminal unit 10 is provided with at least four terminal devices (there are no reference numerals in the figure), and this terminal device has a pair of wire insertion holes 21A and 21B through which the inserted wires L can be conducted. 5 and 6 are views showing an example of the structure. Here, the terminal unit 10 is configured in a sheath shape with a lower end opened, and members constituting each terminal device are accommodated in the sheath-shaped space. It is exposed through a window provided on the ceiling of the unit 10.

This terminal device has a self-locking type structure called a one-touch type, and in the present invention, a leaf-spring-like electric wire made of a conductive material (here, phosphor bronze plated with solder) is used. It has a configuration in which a presser and a release rod are provided. In the figure, reference numeral 25 denotes an electric wire retainer, in which a leaf spring is bent in a reverse S-shape formed by a continuation of upper and lower curved portions 26 and 27 which are curved in opposite directions, and a further upper curved portion 26 is formed.
The end is extended to a straight portion inclined downward and outward from the S-shape, and the end is used as a contact end to the electric wire L. One of the wire holders comes in contact with one wire, and two wire holders are provided for one terminal device. In the figure, reference numeral 24 denotes a contact plate to which the electric wire L contacts with the urging force of the electric wire press. The contact plate 24 is positioned below the terminal unit 10.
By projecting from the lower end of the terminal, the terminal device of another terminal unit or the terminal of the modular jack 40 can be internally connected using the printed wiring board. Next, reference numeral 22 in the figure denotes a release rod provided to be able to move forward and backward with respect to the terminal unit 10. The release rod 22 exerts an action of pressing the wire retainer 25 by its end 23, but such that the contact end of the wire retainer is pressed in a non-contact direction with the wire L.
The advance direction is set.

With the above configuration, the electric wire L is inserted into the electric wire insertion hole 21.
If the wire L is inserted from B and proceeds downward as it is, the wire L is inserted between the contact end of the contact plate 24 and the wire retainer 25. It cannot bite and can not be removed in the pulling-out direction. The wire L is further advanced to be inserted between the side of the curved portion 27 below the wire retainer 25 and the contact plate 24, and comes into contact at two points together with the above-mentioned contact ends (FIG. 5). State). Then, the inserted electric wire L
For example, when the release rod 22 is pressed down by a driver or the like, the wire presser 25 is pressed and the contact end is separated from the wire and can be separated in the pulling direction (the state of FIG. 6).

Reference numerals 11 and 11 in the figure denote terminal units 10.
A pair of engaging arms protruding from both ends of the terminal unit 10 to fix the terminal unit 10 to the base 1, and a pair of engaging recesses whose tips are provided on both sides of the inner wall of the base 1 when the terminal unit 10 is accommodated. 2 and 2 are engaged.

As described above, reference numeral 40 in the figure denotes a modular jack. Here, the modular jack is provided on the base 30 after being fixed on the substrate 30 together with the pair of terminal units 10 and 10 disposed at both ends. The modular jack 40 has eight poles here, and the four-pole terminals are internally connected to the contact plates 24 of the terminal devices of the terminal units 10 and 10 on both sides by using a printed wiring board. You.

In the present embodiment, the terminal plates having the above-mentioned constructions can be connected to one another in one plane by using mounting pieces 3A and 3B provided alternately at both ends in the longitudinal direction of the base 1. It is possible to cope with an increase in terminal devices to be connected. Correspondingly, the modular jack 40 can be used even at the time of connection by directing the plug insertion port 41 of the modular jack 40 in a direction orthogonal to the above connection direction.

In this embodiment, write allowances 4 and 4 for writing memos are provided at the locations of the terminal units 10 on the base 1. Since this terminal plate is assumed to be formed of plastic, the surface of the write allowance 4 is easily written on the surface as a rikoji.

The terminal board having the above configuration can be freely used by the user similarly to a conventional terminal board. A typical usage will be described with reference to FIG. 7 for reference. Here, in the ISDN line, modular jacks A1, A2, B1, B2, C1, C2 in three rooms A, B, C.
Is assumed to be connected to the bus. In the figure, reference numeral 50 denotes a subscriber line. This subscriber line is terminated by a DSU 51, and a modular jack of the DSU and a modular jack 40 of the terminal board of the present invention are provided with modular plugs 5 at both ends.
They are connected by an electric wire 52 provided with 3, 53. The wiring after the modular jack 40 is as follows. Each terminal of modular jack 40 ↓ (Internal connection by printed wiring board) ↓ Each terminal device of terminal unit (A11) ↓ Wire insertion hole 21B of the same terminal device ↓ (Connection by electric wire A21) ↓ Modular jack A1 of room A, same A2 ↓ (Connection by wire A22) ↓ Wire insertion hole 21B of each terminal device of terminal unit (A12) ↓ Wire insertion hole 21A of the same terminal device ↓ (Terminal connection by jumper wire J1) ↓ Each terminal of terminal unit (B11) Wire insertion hole 21A of the device ↓ Wire insertion hole 21B of the terminal device ↓ (connection by wire B21) ↓ Modular jack B1 and B2 of room B ↓ (connection by wire B22) ↓ of each terminal device of terminal unit (B12) Wire insertion hole 21B ↓ Wire insertion hole 21A of the same terminal device ↓ (Terminal connection by jumper wire J2) ↓ End Wire insertion hole 21A of each terminal device of unit (C11) ↓ Wire insertion hole 21B of the same terminal device ↓ (connection by wire C21) ↓ Modular jack C1 and C2 of room C (with terminating resistor) ↓ (connection by wire C22) ) ↓ Wire insertion hole 21B of each terminal device of terminal unit (C12)

In the above-mentioned usage, the name, symbol, etc. of the wiring destination room to which each terminal unit 10 corresponds may be entered using the entry margin 4 of the base 1 of the terminal board.

[0018]

The relay branch terminal plate for a communication line according to the present invention having the above configuration has the following specific effects. Even in the case of ISDN, it is possible to connect from the DSU to the terminal board with a single touch using an electric wire with a modular plug. Bus connection is possible even with star-type wiring and piping, so that existing home telephone wiring and indoor wiring compatible with ISDN can be easily realized using standard piping. Connection of electric wires from each room can be easily performed using a one-touch connection device, so that new installation, change, and removal of wiring are easy. Since the terminal plate is composed of the base and the terminal unit provided thereon, it is possible to realize many variations of the terminal block with a small number of component types.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a terminal block according to the present invention.

FIG. 2 is a plan view of the terminal block of the present invention.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is a sectional view of an electric wire connection device.

FIG. 6 is a sectional view of an electric wire connection device.

FIG. 7 is a wiring diagram showing an example of use of the terminal block of the present invention.

FIG. 8 is a block diagram showing a typical wiring example in a building.

[Explanation of symbols]

 Reference Signs List 1 base 10 terminal unit 21A wire insertion hole 21B wire insertion hole 40 modular jack

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-250170 (JP, A) JP-A-5-54936 (JP, A) JP-A-63-81774 (JP, A) JP-A-63-81 88765 (JP, A) Japanese Utility Model 7-19963 (JP, U) Japanese Utility Model 7-34557 (JP, U) Japanese Utility Model 6-54247 (JP, U) Japanese Utility Model 60-60168 (JP, U) 63-3979 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 4/48 H01R 9/26 H01R 13/514

Claims (3)

(57) [Claims] 1. A jumper wire for a user by arranging a plurality of terminal units on a base having at least four one-touch type terminal devices having a pair of wire insertion holes through which inserted wires can be conducted. Each terminal unit
If the knit terminal devices can be connected to each other,
And a terminal unit of one of the terminal units is internally connected to each terminal of a modular jack to be disposed on the base. 2. The relay terminal board for communication lines according to claim 1, wherein a write allowance for writing a memo is provided at a place where each terminal unit is installed on the base. 3. The relay branch for a communication line according to claim 1, wherein the bases can be connected to each other in one plane direction, and a plug insertion port of the modular jack is directed in a direction orthogonal to the connection direction of the bases. Terminal board.